WO2003094590A1 - Coring tine - Google Patents

Abstract

A coring tine comprises a penetration barrel consisting of a penetration barrel main body and a cylindrical drilling section removably disposed thereunder, a grip section leading to the upper end of the penetration barrel and adapted to be attached to tine holder in a drilling device, and a thin-plate-like blade disposed at the lower end of the drilling section for cutting soil cores. The penetration barrel main body has a lateral opening that widely laterally opens. The drilling section has the thin-plate-like blade for cutting soil cores disposed at the lower end thereof to project along an imaginary diametrical line, and also has a wedge disposed on the periphery thereof that is formed by removing the material from a region extending from an intermediate portion toward the lower end on opposite sides in the manner of slope. When a number of coring tines are set in the drilling device and used for coring lawn soil, the soil cores discharged from the coring tines are in a finely divided state, usable as a top-dressing.

Description

 Description Coring tines Technical field

 INDUSTRIAL APPLICABILITY The present invention makes an average number of holes in a turf cloth such as a golf course to improve the tilling effect, thereby refreshing the lawn by alleviating soil consolidation, improving water permeability and improving air permeability. It relates to the tines for coring used for this purpose. Background art

 Conventionally, generally used coring tines are composed of an insertion tube portion for drilling and a grip portion located above the insertion tube portion. The gripping portion is a columnar or cylindrical component for inserting into and attaching to the tine holder of the drilling device. Needless to say, the gripping portion can hold the tine holder of the drilling device to be mounted. It is configured according to the outside diameter.

 In addition, the insertion tube portion has an annular blade portion at a lower end thereof, and the soil core that has entered the blade portion by coring operation has a tube portion that extends from the insertion tube portion to the grip portion. In the case of a top-open type tine that extends to the upper end and is opened, discharge is performed from the opening at the upper end during the subsequent coring operation. In the case of a side-open type tine that opens to the side, the air is discharged from the side opening in the same manner.

Note that the above-mentioned annular blade portion merely refers to the tip portion to be inserted into the turf cloth, and is usually merely an annular end portion. That is, the blade portion is not necessarily formed into a sharp blade and hardened. Further, the insertion tube portion has a conical configuration in which both the inner diameter and the outer diameter become narrower from the upper end or from the middle to the lower end.

 These coring tines of any of the above-mentioned types may cause breakage in the middle of the insertion tube portion during the coring work of the turf cloth. The causes of such breakage include overload caused by the high hardness of the soil on the tine during coring, and impactful load applied by colliding with stones that may be contained in the soil. It is considered. At present, as a measure to avoid breakage accidents due to the former, the means of exclusively increasing the wall thickness of the insertion tube is adopted. However, it seems that this measure has not always yielded good results. According to the inventor's knowledge, the breakage of the tine is not caused only by the hardness of the soil, but also by the insertion resistance of the tine itself and the wear of the tine surface by the soil to be inserted. This is because good results cannot be obtained unless measures take these factors into account. In fact, if the thickness of the insertion tube is increased, the strength of the tine will be improved and the breakage accident will tend to be slightly reduced, but as a result of such a measure, the insertion resistance will be reduced. As a result, it cannot be said that the expected effect has been sufficiently obtained.

 'Needless to say, if the breakage is caused by any of the reasons, the tine must be replaced.

In addition to the accidental breakage described above, these types of coring tines, whatever the type, can cause repeated wear of the lawn material, causing the blade at the lower end to wear, Eventually, it will be shorter than the specified size, and it will be necessary to replace it. If it is described as being used on a golf course green, ordinary tines for coring are usually shorter than the prescribed size after using about 4 holes, and must be replaced. In the case of such abrasion of the blade, the coring tine may be undersized at the bottom of the insertion tube. It has just occurred, and most of the rest is usually fine. Therefore, it must be said that the necessity of discarding them is economically large. '

 These coring tines have, in addition to the problems associated with their wear, the problems associated with the handling of soil cores that occur when they are used.

 When the turf is cored using these coring tines, the coring tine is naturally discharged onto the corrugated turf regardless of the type of the coring tine used. The columnar soil core will be scattered. Therefore, it is necessary to sweep up these soil cores using a broom or to collect them using a dedicated recovery device, and to dispose of the collected soil cores in some form. This is a cumbersome task. Accordingly, one object of the present invention is to provide a tine for coring that does not easily break during the coring operation.

 Another object of the present invention is to prevent wear of the blade at the lower end of the insertion tube portion due to use, or to cause damage to a solid object, such as wear caused only at a part of the lower end. The purpose is to provide a tine for coring that does not cause inconvenience of discarding the whole.

 Yet another object of the present invention is to make it possible for soil cores generated by the coring operation to be easily used as a filling material, so that they can be recovered after the coring operation. Providing a tining for coring that can reduce the work required to prepare the soil separately and apply it on the turf fabric by reducing it and using it as it is as the filling material That is. Disclosure of the invention

A first aspect of the present invention is a coring tine for perforating turf cloth, which includes an insertion tube portion for perforation, and a grip portion located above the insertion tube portion. In a tine for coring comprising a grip portion and a force for attaching to a tine holder of a punching device,

 This is a coring tine formed by forming a tapered wedge portion by obliquely removing the lower portion of the insertion tube portion from both sides up to the virtual diameter line at the lower end. As the tines for coring, any hollow type tines are applicable and are not particularly limited. Naturally, a coring tine having a cylindrical shape in which the insertion tube portion has a straight diameter from the upper end to the lower end, or a tapering coring tine tapering toward the lower end is also applicable. It goes without saying that both the side-open type coring tines and the top-open type coring tines are included.

 The tine for coring is, in addition to the general one described above, a cutting blade member for cutting the soil core attached to any portion between the lower end and the upper end of the insertion tube portion. Including. The cutting blade member will be described later.

 As described above, the wedge portion is formed by cutting a lower portion of the insertion tube portion obliquely from both sides of a slightly upper portion toward a virtual diameter line at a lower end. Since the wedge portion is configured by removing the lower portion of the insertion tube portion which is a cylindrical member as described above, the wedge portion has a wedge shape only when viewed from the side that hits the side portion of the wedge. It is only visible. When viewed from the front (front) side of the wedge, it looks circular, and when viewed from the side that intersects the side that hits the wedge, it looks like a semi-ellipse with the lower half removed.

 Since the wedge portion is configured as described above and has a sharp configuration, the tine configured as described above has a low resistance when the tine is inserted into the turf cloth, and reduces the load applied to the insertion tube portion. It can be expected to work.

Therefore, according to the coring tine according to the first aspect of the present invention, when the tine is attached to a boring device for turf, and the coring operation is performed, Due to the action of the wedge formed at the lower part of the barrel part, the insertion resistance of the tine into the turf is extremely small. Therefore, the load at the time of insertion to the tines is reduced, and the possibility of breakage of the insertion tube portion can be extremely reduced, so that economical loss due to a breakage accident can be reduced. According to a second aspect of the present invention, in the tining for coring according to the first aspect of the present invention, the lower inner periphery of the insertion tube portion is configured as a small inner diameter portion, and the upper inner periphery thereof is configured as a standard inner diameter portion. . ,

 As described above, only the lower portion of the insertion tube portion is formed as a small inner diameter portion having an inner diameter smaller than the upper portion, and the boundary between the small inner diameter portion and the upper standard inner diameter portion has a step. It may be formed, or may be formed in a slope shape whose diameter changes gradually.

 The small inner diameter portion is such that when the tine is inserted into the lawn material, one is that the soil core that has relatively entered the insertion tube portion of the tine descends relatively when the tine is lifted. That is, it is expected that the soil core is prevented from falling out of the insertion tube portion and remaining in the turf, and has a lifting action of lifting together with the tine. The other is expected to reduce the resistance of the tines to be inserted into the lawn, and through this, to reduce the breakage of the tines.

More specifically, the former effect is that the soil core that has penetrated into the insertion cylinder when the tine is inserted into the lawn is related to the boundary between the lower inner diameter portion and the upper standard inner diameter portion. When the tine rises from the lawn by stopping, the tine rises with the rise. That is, the soil core that has been tightened at the small inner diameter portion tends to relatively enter the standard inner diameter portion and slightly expand, thereby easily engaging with the above-mentioned boundary portion. Therefore, there is no problem that the soil core that has entered the insertion tube at one end is left behind in the turf when the tine is raised. In addition, the soil core that has entered the insertion tube part in this manner is replaced with the soil core that newly enters by the next insertion operation by the tine. It goes without saying that the top open type tines are discharged from the upper opening, and the side open type tines are discharged from the side opening.

 More specifically, when the tine is inserted into the sod, the small inner diameter of the lower part is closely related to the soil core generated when the tine is inserted. However, since the soil core does not come in close contact with the upper standard inner diameter portion having a larger diameter, only a lower insertion resistance than usual is applied. As a result, a large reduction in insertion resistance can be expected as a whole.

 By the way, in order to achieve the former lifting action of the soil core, it is sufficient that the soil core is locked near the boundary between the lowermost inner diameter part and the standard inner diameter part, and the soil that has entered the insertion cylinder part. In order to satisfactorily lock the entire core, it is preferable to lock the lower part of the soil core as much as possible. From such a viewpoint, it is appropriate that the small inner diameter portion is formed within a range as short as possible from the lowermost portion. In addition, the effect of reducing the insertion resistance at the upper standard inner diameter portion as described above can be achieved if the soil core has a smaller diameter than the standard inner diameter portion. It is not necessary to make the small inside diameter part long in order to generate. Further, from the point of reducing the insertion resistance as a whole, it is appropriate to configure the small inner diameter portion having a larger insertion resistance than the standard inner diameter portion as short as possible. Therefore, according to the coring tine 2 of the present invention, when the coring tine is attached to a boring device for turf cloth and coring is performed, the small inner diameter portion at the lower portion of the insertion tube portion and the upper portion thereof are Due to the action of the standard inner diameter portion, the resistance of the tin to the turf cloth can be further reduced, and the load at the time of the insertion of the tin into the grass can be reduced. Therefore, the risk of breakage of the insertion tube portion can be made extremely low. Thus, according to the tining for coring according to the second aspect of the present invention, it is possible to further reduce the economical loss due to the breakage of the tin.

In addition, the soil core that entered the insertion tube when the PC drawing 3/05600

 7

Due to the action of the lower inside diameter part and the standard inside diameter part above, when the tine rises from the lawn, it does not rise and is not left behind in the ground. Then, the soil core that has entered the insertion tube portion in this way is pushed up by the newly entering soil core in the next insertion operation by the tine, and the top of the top open type tine is performed if the soil core newly enters. It goes without saying that if a side open type tine is discharged from the opening, it will be discharged from the side opening. Therefore, according to the coring tine 2 of the present invention, it is possible to satisfactorily discharge the soil core, which has entered the insertion tube portion, onto the turf surface.

 According to a third aspect of the present invention, in the tine for coring according to the first or second aspect of the present invention, a lower portion of the insertion tube portion is a large outer diameter portion, and an upper portion thereof is a standard outer diameter portion. .

 Therefore, according to the third tine for coring of the present invention, it is expected that the tine has a function of further reducing the insertion resistance of the tine on the lawn and further reducing the load applied to the insertion tube portion. is there. In addition, the wear on the peripheral side of the insertion tube portion can be reduced. .

 More specifically, when the tine is inserted into the lawn, the large outer diameter of the lower part of the insertion tube part is usually close to the surrounding soil wall generated at the time of insertion. However, since the soil wall does not come into close contact with the standard outer diameter portion, which is smaller in diameter, only the following insertion resistance is normally applied. Further, as described above, since the soil wall does not come in close contact with each other, the outer circumference of the standard outer diameter portion is significantly reduced in abrasion due to the soil wall as compared with the case where the large outer diameter portion is not formed. It can be done. For this reason, the coring tine 3 of the present invention can be expected to greatly reduce the insertion resistance and significantly reduce the wear as a whole, and as a result, greatly reduce the number of breakage accidents. You can do it.

A fourth aspect of the present invention is a coring tine for perforating turf cloth, which includes an insertion tube portion for perforation, and a grip portion located above the insertion tube portion. A coring tine comprising a grip and a force for attaching to a tin holder of a drilling device;

 For a core ring configured such that the insertion tube portion is divided into an upper insertion tube portion main body and a lower perforation portion, and the upper end of the perforation portion can be detachably attached to the lower end of the insertion tube portion main body. Tyne.

 The coating tines are the same as those of the first aspect of the present invention.

 The structure of the detachable attachment between the insertion tube portion main body and the lower perforated portion is not limited to a specific structure as long as both can be easily attached and detached and the connection is secure.

 Therefore, according to the coring tine 4 of the present invention, if a perforated portion is attached to the lower end of the insertion tube body in advance, a general perforated tine for lawn cloth is provided in the same manner as a general coring tine. Needless to say, it is possible to perform the coring work by attaching to the device. If such a coring work is repeated, if the perforated portion underneath is worn by a predetermined size or more, or the like. If the perforated portion collides with a solid such as a stone during the coring operation and is damaged, the perforated portion that caused the abrasion or the like is removed, and a new perforated portion is attached. The use can be continued similarly.

 That is, according to the coring tine 4 of the present invention, only the worn or damaged perforated portion can be discarded and replaced with a new perforated portion to continue use. It is possible to avoid wasting due to the entire disposal due to wear and the like, and to avoid economical loss. A fifth aspect of the present invention is the tine for coring according to the fourth aspect of the present invention, wherein a female screw or a male screw is formed on a lower end peripheral side of the insertion cylinder section main body, and the insertion cylinder section is formed on an upper end peripheral side of the perforated section. A male screw or a female screw which can be screwed to the female screw or the male screw of the main body is formed so that the latter can be detachably attached to the former.

Therefore, according to the fifth coring tine of the present invention, PC leak 00

 9

By repeating the coring work by attaching it to a general ground drilling machine, if the perforated part underneath wears by a predetermined size or more, or during such coring work, the perforated part collides with a solid such as stone. In the case where damage has occurred due to damage, it is easy to remove the perforated portion and replace it with a new perforated portion, and it is possible to securely mount the perforated portion.

 A sixth aspect of the present invention is the coring tine according to the fifth aspect of the present invention, wherein the collar member is provided on a base portion on a side on which a male screw is formed on the lower peripheral side of the insertion cylinder main body or on the upper peripheral side of the perforated portion. When the exterior member is formed and a stepped stopper portion is formed at the inner end of the base portion, and the male screw and the female screw are screwed together, the collar member is disposed between the stepped stopper portion and the outer end of the female screw. It is designed to be sandwiched.

 Therefore, according to the coring tine 6 of the present invention, since the force roller member is interposed between the outer end of the female screw and the stepped stopper, the load applied to the perforated portion in the coring operation Is transmitted to the insertion tube main body via the collar member, and the portion to be applied to the male screw and the female screw is dispersed. Therefore, the male screw and the female screw are protected, and the long-term use of the insertion tube body is ensured.

 A seventh aspect of the present invention is a tine for coring for piercing turf cloth, which is a piercing plug portion and a grip portion located above the tubing portion, and a tine holder of the perforating device. In the tine for coring consisting of the gripper for attaching to the

 Between the lower end opening and the upper end opening or the side opening of the insertion tube portion, a cutting blade member for cutting soil core that enters from the lower end opening and rises relatively when drilling is provided. It is a tinning for coring. As the tines for coring, any hollow type tines are applicable and are not particularly limited.

The cutting blade member is, as described above, a top-open type 03 05600

 Ten

If it is a coring tine, it may be arranged at any position from the lower end of the insertion tube portion to the upper end opening opening at the upper end of the holding portion. It is not inconvenient that the cutting blade member disposed at the lower end of the insertion tube portion projects considerably downward from the lower end, but rather by tapering and projecting, it is possible to cut the soil core while reducing the insertion resistance. It is possible to plan. This case is also included in the concept of being arranged at the lower end of the insertion tube portion. Similarly, as long as it is a side-open type coring tine, the cutting blade member may be arranged at any position from the lower end of the insertion tube portion to the side opening. The significance of the cutting blade member arranged at the lower end is the same as that of the top open type.

 Further, the cutting blade member is not limited to a specific configuration as long as it can cut a soil core that enters from the lower end opening and rises relatively when drilling. Here, cutting refers to cutting, breaking, or breaking a columnar soil core to make it easier to use as soil. It does not require complete sanding.

 Therefore, according to the coring tine 7 of the present invention, when this is attached to the boring device and coring work of the turf is performed, the soil core discharged from the coring tine at that time is finely divided. They are cut and they are scattered on the grass surface. Therefore, after this, if the swab is used to sweep the soil, for example, the soil core will enter the turfgrass while breaking it further finely. Therefore, the work of collecting the soil core can be reduced, and the earth filling work can be performed without preparing the material for the earth filling. As a whole, the work labor is reduced, and the material for the earth filling is reduced. Costs will be reduced.

In other words, the maintenance and management of the turf fabric, that is, the adjustment of grass surface unevenness, the suppression of accumulation of satachi, the protection of turfgrass growth points, the improvement of surface soil, the increase of soil water retention capacity, the repair of turf surfaces Observe the lawn condition etc. However, in many cases, it is necessary to apply the soil two or six times a year, which also requires considerable labor and cost. However, according to the coring tine of the seventh aspect of the present invention, as described above, the soil filling work can be completed through the coring work performed at the same time and the same number of times, and the effect of reducing both labor and cost can be obtained. Will be obtained. Also, if the floor soil of the lawn is sand, the same sand as the floor soil should be used.If the floor soil is not sand, the material to be used as the soil should be changed to sand sometime. Even if you go, you should use soil made of material similar to floor soil as much as possible and gradually increase the proportion of sand. From such a viewpoint, as described above, it is preferable to cut the soil core obtained by perforating the turf cloth and use the cut core as the soil.

 An eighth aspect of the present invention is the coring tine according to the seventh aspect, wherein one thin plate blade is employed as the cutting blade member, and the one thin blade is connected to the above-mentioned differential blade. It is arranged so as to cross the axis at any position from the lower end opening to the upper end opening or the side opening of the barrel portion, and the blade portion is arranged downward.

 Therefore, according to the coring tine 8 of the present invention, it is possible to discharge the soil core generated by the turf dough corering operation in an appropriately cut state, and to scatter the scattered soil on the lawn surface using a broom or the like. By sweeping and smoothing, it is possible to easily and satisfactorily fill the grass with grass. The eighth coring tie according to the present invention cuts the soil core entering the insertion tube portion into two by dividing the soil core into two along a line passing through the center of the soil core. It is a configuration suitable for.

A ninth aspect of the present invention is the coring tine according to the seventh aspect, wherein three thin blades are adopted as the cutting blade members, and the three thin blades are connected to each other by the difference. It is arranged at any position from the lower end opening to the upper end opening or the side opening of the insertion tube so as to extend in the circumferential direction at an angle of 120 degrees from its axis and mutually with its blades. Pointing downwards It is arranged.

 Accordingly, similarly to the coring tine 9 of the present invention, the coring tine 9 of the present invention can be discharged in a state where the soil core generated by the coring work of the turf dough is appropriately cut, and the lawn surface can be discharged. By using the scattered upwards, it is possible to easily and satisfactorily apply the soil to the grass. According to the nineteenth aspect of the present invention, the coring tine is configured to cut the soil core entering the insertion tube part into three parts at an angle of 120 degrees at the center thereof, and to cut the soil core into small parts. Suitable for slightly larger diameter tines. .

 According to a tenth aspect of the present invention, in the coring tine according to the seventh aspect of the present invention, two thin plate blades are adopted as the cutting blade members, and the two thin plate blades are used as the cutting blade members. It is placed at any point from the lower end opening to the upper end opening or the side opening of the insertion tube at an angle of 90 degrees at its axis and their blades are directed downward. Therefore, similarly to the ninth aspect of the present invention, the 10 tine for coring of the present invention can be discharged in a state where the soil core generated by the coring operation of the turf cloth is appropriately cut, and the tine on the turf surface By using the scattered grass, it is possible to easily and conveniently apply the soil to the grass. According to the tenth aspect of the present invention, the soil tine which enters the insertion tube part is cut into small pieces by dividing the soil core into four parts at an angle of 90 degrees at the center thereof. This configuration is more suitable for larger diameter tines.

11 of the present invention relates to the coring tine of 8, 9 or 10 of the present invention, wherein a cutting blade member is disposed at a lower end of the insertion tube portion, and a lower portion of the insertion tube portion is provided. Of the peripheral side, a portion where the side end of the thin plate blade is not in contact is deleted so as to taper toward the lower end. 11 of the present invention corresponds to 8, 9 or 10 of the present invention. Of particular interest are not all of the coring tines, but those in which a cutting blade member is disposed at the lower end of the insertion tube portion. Then, as described above, the side edge of the thin plate-shaped blade is formed on the lower peripheral side of the insertion tube portion, as described above. This is done so that the part that is not in contact is tapered toward the lower end. For example, in the case of the coring tine of the eighth aspect of the present invention, the deletion is performed such that the lower part of the insertion tube part is formed as a wedge as described in the first aspect of the present invention. That is, the peripheral side of the insertion tube portion is obliquely deleted from both sides toward the cutting edge (temporary diameter line) at the lower end of the one sheet blade to form a wedge portion.

 Further, in the case of the coring tie 9 of the present invention, the deletion is performed, for example, by setting the outer ends of the three thin plate blades from three sides downward on the peripheral side of the insertion tube portion as vertices. It is performed obliquely so that a virtual line of an equilateral triangle is formed at the lower end. In the case of the tenrings for coring of the present invention, for example, the removal is performed by, for example, cutting two thin plate-like blades in which the peripheral side of the insertion tube part crosses downward from four directions. It is performed obliquely so that a virtual quadrilateral imaginary line with the outer end as the apex angle is formed at the lower end.

 The coring tines 7 to 10 of the present invention are provided with a cutting blade member at any part of the inside thereof, and there is a possibility that the insertion resistance into the turf cloth during coring work may increase. is there. Therefore, in particular, when the cutting blade member is disposed at the lower end of the insertion tube portion, a tapered deleted shape is given as described above, and thereby, when the cutting blade member is inserted into the lawn material. This makes it possible to reduce the resistance of the cable and make it possible to insert it without particularly requiring a large insertion pressure.

 12 of the present invention is a coring tine for piercing turf cloth, which is a piercing insertion tube portion, and a grip portion located above the insertion tube portion, In a tine for coring consisting of a gripper for attaching to a tine holder,

 From the middle of the lower part of the insertion tube part to the fancy diameter line at the lower end, both sides of the insertion part are thinned to form a wedge part,

At the lower end of the insertion tube portion, one thin blade serving as a cutting blade member is arranged along the above-mentioned temporary diameter line, and the lower portion protrudes downward from the lower end of the insertion tube portion. In the state, further down in the upper center A coring tine fixedly provided with a notch portion formed so as to form a window between the notch portion and the semi-elliptical arc on the deleted side of the wedge portion.

 Therefore, according to the coring tine 12 of the present invention, when this is attached to a drilling device and coring work of turf cloth is performed, similar to that of 7 to 11 of the present invention, the coring tine is used at that time. Needless to say, the soil core discharged from the tine is finely cut and can be used as the soil. At this time, according to the core ring tine 12 of the present invention, the insertion resistance is reduced by the action of the wedge portion. In addition to this, the cutting blade member is used as the cutting edge member. The thin blades protrude downward from the lower end of the insertion cylinder and the notch is formed at the center of the upper part of the blade, so that the insertion resistance is further reduced even though the cutting blade is provided. It is possible to insert with a small insertion pressure. This also reduced the risk of breakage. BRIEF DESCRIPTION OF THE DRAWINGSFIGS. 1 to 3 relate to the first embodiment, FIG. 1 (a) is a front view of a coring tine, FIG. 1 (b) is a side view of a coring tine, FIG. (c) is an enlarged bottom view of the coring tine, Figure 2 (a) is an enlarged cross-sectional view taken along line A-A of Figure 1 (a), and Figure 2 (b) is an enlarged view taken along line B-B of Figure 1 (a). Fig. 2 (c) is a cross-sectional view taken along the line C-C of Fig. 1 (b), and Fig. 3 is a vertical cross-sectional view of the coring tie in a state where it is partially inserted into the grass.

 FIGS. 4 and 5 relate to the second embodiment. FIG. 4 (a) is a front view of the coring tine, FIG. 4 (b) is a side view of the coring tine, and FIG. 4 (c) is a coring tine. Fig. 5 (a) is an enlarged sectional view taken along line D-D of Fig. 4 (a), Fig. 5 (b) is an enlarged sectional view taken along line E_E of Fig. 4 (a), and Fig. 5 (c). ) Is a sectional view taken along line FF of FIG. 4 (b).

FIGS. 6 to 9 relate to Example 3, and FIG. 6 (a) is for coring. Fig. 6 (b) is a side view of the coring ties, Fig. 6 (c) is an enlarged bottom view of the coring ties, and Fig. 7 (a) is G in Fig. 6 (a). — Fig. 7 (b) is an enlarged sectional view of the H-H line in Fig. 6 (a), Fig. 7 (c) is a sectional view of the I-I line in Fig. 6 (b), Fig. 8 (a) ) Is a partially omitted enlarged longitudinal cross-sectional view of the coring tine, with the main body, the collar member, and the perforated portion of the coring tine separated.Figure 8 (b) is the main body of the coring tine, FIG. 9 is an enlarged vertical cross-sectional view partially showing a state in which a collar member and a perforated portion are connected, and FIG. 9 is a vertical cross-sectional view of a coring tine partially inserted into a lawn.

 Fig. 10 relates to Example 4, Fig. 10 (a) is a front view of the tining for coating, Fig. 10 (b) is a side view of the tining for coring, and Fig. 10 (c) is a drawing. FIG. 10 is a sectional view taken along the line J-J of 10 (b).

 Fig. 11 relates to the fifth embodiment, Fig. 11 (a) is a front view of the coring tine, Fig. 11 (b) is a side view of the coring tine, and Fig. 11 (c) is a diagram. FIG. 10 is a cross-sectional view taken along line K-K of 10 (b).

 Fig. 12 relates to the sixth embodiment. Fig. 12 (a) is a front view of the coring tine, Fig. 12 (b) is a side view of the coring tine, and Fig. 12 (c) is the coring tine. Fig. 12 (d) is an enlarged sectional view taken along line L-L of Fig. 12 (a), and Fig. 12 (e) is an enlarged sectional view taken along line M-M of Fig. 12 (a). It is a figure.

 Figs. 13 and 14 relate to the seventh embodiment. Fig. 13 (a) is a front view of the tines for coating, and Fig. 13 (b) is an enlarged bottom view of the tines for coring. 3 (is an enlarged cross-sectional view taken along line N-N in Fig. 13 (a), Fig. 13 (d) is an enlarged cross-sectional view taken along line 0-0 in Fig. 13 (a), and Fig. 14 is a tie for core ring. BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In order to explain the present invention in more detail, embodiments will be described below with reference to the accompanying drawings. First, the tines for coring of Example 1 will be described.

 As shown in FIGS. 1 (a), (b) and (c) and FIG. 2 (c), the coring tine of the first embodiment includes an insertion tube portion 1 and an upper portion of the insertion tube portion 1. It is configured integrally with the gripper 2 located at the position.

 As shown in FIGS. 1 (a), (b), (c) and FIG. 2 (c), the gripper 2 has a two-stage structure of an upper small diameter portion 2a and a lower large diameter portion 2b. In Example 1, the upper small-diameter portion 2a was formed into a 15.9 mm diameter column, and the lower large-diameter portion 2b was formed into a 18.5 mm diameter column. I have.

 As shown in FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (c), the insertion tube portion 1 is basically a straight cylindrical member, It has a side opening 6 that is wide open on the side. It goes without saying that the side opening 6 communicates with the opening at the lower end. That is, the coring tine of the first embodiment is a side-open type. The outer diameter of the insertion tube 1 was set to 12 mm in Example 1.

 As shown in FIGS. 1 (a), (b), (c) and FIGS. 2 (a), (c), the insertion tube portion 1 has a standard inner diameter portion 3 above the lowermost portion. A small inner diameter portion 4 having a slightly smaller inner diameter is formed, and a boundary portion between the small inner diameter portion 4 and the upper standard inner diameter portion 3 is formed in a stepped shape. The difference between the standard inner diameter portion 3 and the small inner diameter portion 4 was set to 1 mm in diameter in Example 1. As shown in FIGS. 1 (a), 1 (b) and 2 (c), the boundary between the small inner diameter portion 4 and the upper standard inner diameter portion 3 is as shown in FIGS. 1 (a), 1 (b) and 2 (c). It is located near the middle of the uppermost part of wedge part 5 described later.

Further, as shown in FIGS. 1 (a), (b), (c) and FIG. 2 (c), the insertion tube portion 1 has a wedge portion 5 at the lowermost portion. As shown in the figure, the wedge portion 5 is formed by removing a lower portion of the insertion tube portion 1 in a wedge shape from both sides toward an imaginary diameter line L1 at a lower end. Since the insertion tube portion 1 is a cylindrical member, as a result of the above-described deletion, as shown in FIG. 1 (a), the insertion tube portion becomes wedge-shaped only when viewed from the side of the wedge. You will see it. As shown in Fig. 1 (c), 1), it looks like a circle, and as shown in Fig. 1 (b), it looks like a semi-ellipse with the lower half removed, as seen from the side perpendicular to the side of the wedge.

 Therefore, according to the coring tine 1 of this embodiment, when the turf coring work is performed by using the coring tine, the tine holder has a diameter of 15. It can correspond to both the one that can hold the grip with a diameter of about 9 mm and the one that can hold the grip with a diameter of about 18.5 mm. If the drilling device has a tine holder of the former diameter, the upper small-diameter portion 2a of the gripping portion 2 is inserted therein, and if the punching device has a tine holder of the latter diameter, the lower stage is used. Needless to say, the large diameter portion 2b of the tine holder may be inserted into the tine holder and fixed by a fixing means provided in the tine holder such as tightening a fastening screw.

 By the way, the outer diameter of the gripper that can be held by the tine holder of the current drilling device using such a tine for coring includes 22.4 mm, 18.5 mm, 15.9 mm, and 15.9 mm. There are about 6 types of 2.7 mm, 12 mm, and 9.o mm. As described above, the gripping portion 2 of the coring tine of Example 1 has a small diameter portion 2a of 15.9 mm in the upper row and a large diameter portion 2b of 18.5 mm in the lower row. Since it is constituted by, it can be used by being attached to a punching device capable of holding the grips of these two diameters. In addition, for example, gripping by combining a large diameter part of 22.4 mm and a small diameter part of 12.7 mm, and a combination of a large diameter part of 12 mm and a small diameter part of 9.5 mm If a tine for contouring having a section is configured, three types of drills can be used for almost all types of drilling devices in addition to that of the first embodiment. If a tine having the same insertion tube diameter and function that differs only in the combination of the three types of gripper diameters can be used for almost all drilling devices, all one It is more economically effective than preparing them one by one.

Also, according to the coring tines of the first embodiment, the coring work is performed. In addition to discharging the soil core onto the turf fabric during the operation, it is possible to reduce breakage of the tines.

 According to the coring tine of the first embodiment, when the coring work is performed by attaching the tine to the tine holder of the drilling device, the small inner diameter portion 4 at the lower portion of the insertion tube portion 1 and the standard inner diameter portion above the same. Due to the effect of 3, the soil core that has entered this can be well discharged onto the turf without being left in the turf.

 As shown in FIG. 3, when the tine is inserted into the turf t, the soil relatively enters into the insertion tube portion 1 of the tine to become a soil core c. Since the soil core c relatively rises in the small inner diameter portion 4 when entering, it naturally rises to have a diameter corresponding to the diameter of the small inner diameter portion 4, but further rises. When entering the standard inner diameter section 3, the diameter of the approach path becomes large and the tightening is slightly loosened, so that the pipe slightly expands. Due to the slight expansion thus generated, the soil core c is locked near the boundary between the small inner diameter portion 4 and the standard inner diameter portion 3, and even if the tine is lifted from the lawn t, This prevents the soil core c from coming out of the insertion tube portion 1 and remaining in the lawn t.

 The soil core c that has entered the insertion tube portion 1 in this manner is the other soil core that will newly enter the insertion tube portion 1 the next time the tine is inserted into the lawn t. c is pushed up and discharged from the side opening 6. During the coring work, the above operations are repeated.

 Also, during the above-mentioned coring work, according to the coring tine of the first embodiment, the action of the small inner diameter part 4 at the lower part of the insertion cylinder part 1 and the standard inner diameter part 3 and the wedge part 5 thereabove. As a result, the resistance of the tine to be inserted into the grass t becomes extremely small. For this reason, the load at the time of insertion to the tines is small, and as a result, 虡 of breakage of the insertion tube portion 1 can be extremely low.

As shown in Fig. 3, when the tine is inserted into the lawn t, the insertion tube section 1 At the lower inner diameter part 4 of the lower part, the soil core c generated at the time of insertion rises relatively closely to the inner circumference, so that normal insertion resistance is applied. Since the inside of the large-diameter standard inner diameter portion 3 relatively rises, the soil core c does not come into close contact with the inner periphery thereof, and as a result, only the insertion resistance less than usual is applied. The small inner diameter portion 4 is only located within a short range below the insertion tube portion 1, and as a result, a large reduction in insertion resistance can be obtained as a whole.

 Further, as described above, the lowermost portion of the insertion tube portion 1 is formed in the wedge portion 5 unlike a conventional annular blade portion such as the lower end of the insertion tube portion of a tine. Therefore, the resistance can be made sufficiently small when it is inserted into the grass t.

 Therefore, according to the coring tine of the first embodiment, since the insertion resistance to the lawn t can be sufficiently reduced, the economical loss due to the breakage of the tie caused by this can be avoided to the utmost. You can do it.

 Next, the coring tines of the second embodiment will be described.

 As shown in FIGS. 4 (a), (b) and (c) and FIGS. 5 (a), (b) and (c), the coring tine of the second embodiment is the same as that of the first embodiment. A large outer diameter portion 7 is added to the lower part of the insertion tub portion 1 of the tine, and there is no other difference from the first embodiment. Therefore, the description will be focused on this point. Although not a structural change, in the second embodiment, the outer peripheral portion located above the large outer diameter portion 7 of the insertion tube portion 1 is changed to the standard outer diameter portion due to the relationship with the large outer diameter portion 7. It is called. The same components as those in the first embodiment are denoted by the same reference numerals.

As described above, the tine for coring of the second embodiment is configured such that the lower outer periphery of the insertion tube portion 1 having the completely same configuration as that of the first embodiment is a large outer diameter portion 7. From the relationship with the large outer diameter portion 7, as described above, the upper portion is referred to as a standard outer diameter portion. In Example 2, the above large The diameter of the outer diameter part 7 is larger than the diameter of the standard outer diameter part by 1.5 mm in diameter.

 Therefore, according to the coring tine of the second embodiment, the insertion resistance of the tine to the lawn t can be further reduced, and the load applied to the insertion tube portion 1 can be further reduced than that of the first embodiment. This is what can be done.

 When the tine is inserted into the lawn t, the normal outside resistance is applied to the large outer diameter part 7 at the bottom of the insertion tube part 1 because the surrounding soil wall generated at the time of insertion comes into close contact with it. However, since the soil wall does not come in close contact with the upper standard outer diameter portion having a smaller diameter, the insertion resistance is usually less than the normal. For the same reason, the standard outer diameter portion can significantly reduce its wear as compared with the case where the large outer diameter portion 7 is not provided at the lower portion. The large outer diameter portion 7 is arranged only in a very short range as compared with the standard outer diameter portion, and the standard outer diameter portion having a small insertion resistance and low abrasion occupies most. Therefore, according to the coring tine of the second embodiment, it is possible to largely reduce the insertion resistance and reduce the wear of the standard outer diameter portion as a whole. As a result, it is possible to reduce the breakage of the tines. Next, a description will be given of a coring tine according to a third embodiment.

 FIGS. 6 (a), (b), (c), FIGS. 7 (a), (b), (c) and FIGS. 8 (a;), (b) As shown in the figure, the plug cylinder 1.1 composed of the plug cylinder main body 11a and the perforated portion 11b detachably arranged at the lower part thereof, and continuous with the upper end of the plug cylinder 11 It basically comprises a gripping portion 12 for attaching to a tongue holder of a drilling device, and a thin blade 13 for cutting a soil core disposed at a lower end of the drilling portion 11b. The outer diameter of the insertion tube body 1 la of this coring tie is 12 mm.

As described above, the insertion tube portion 11 is composed of the insertion tube portion main body 11a and the perforated portion lib, as shown in FIGS. 6 (a), (b), (c) and FIG. 7 (a). , (B) and (c) PC leak 3/05600

 twenty one

Thus, the whole is basically cylindrical.

As shown in FIGS. 6 ( _a ) and 6 (b) and FIGS. 7 (a) and 7 (c), the insertion tube main body 1la has a side opening 16 which is wide open on the side. However, the tines for coring in Example 3 are of the side-open type. As shown in detail in FIGS. 8 (a) and 8 (b), the insertion cylinder portion main body 11a is provided with an internal thread for coupling with the perforated portion 11b at the inner periphery of the lower end opening. It has 1 4.

As shown in FIGS. 6 (a), (b), (c), FIGS. 7 (b), (c) and FIGS. 8 (a), (b), the perforated portion lib basically has a cylindrical shape. No, its inner diameter is identical to the bottom from the same upper end of the differential write tubular body 1 1 _a, the outer diameter is formed from the middle to slightly squeezed tapered downward. Further, the perforated portion 11b is provided at its lower end with a thin blade 13 for cutting the soil core along the virtual diameter line L2, and the periphery of the perforated portion 11b. On the side, a wedge portion 15 is formed which is obliquely deleted from both sides from the middle to the lower end. As shown in FIG. 6 (b), the thin plate 13 protrudes downward from the lower end of the cylindrical perforated portion 11b into a semi-elliptical plate, and a notch 13a is formed at the upper center. Is formed. That is, the laminar blade 13 has only two side ends slightly extending upward and fixed to the inner periphery of the perforated portion 11b. As shown in FIG. 6 (b), the cutout portion 13a has a shape in which the portion of the perforated portion 11b is deleted and the cylindrical body is upwardly cut into a semi-elliptical shape. As a result, a window-like portion is formed on the back side between the elliptical cut-out portion. Needless to say, the thin blade 13 has a blade at the lower end. As shown in FIG. 6 (c), the lowermost end of the perforated portion 11b has a single-character shape along the blade portion of the thin blade 13 as viewed from below.

As shown in detail in FIGS. 8 (a) and 8 (b), an extension cylindrical portion 17a for a color exterior with a slightly thinner diameter is projected from the upper end of the perforated portion lib, and further extended. Male thread with a slightly smaller diameter than the upper end of the cylinder 17a 17 b is projected. The male screw 17 b has such a size and shape that it can be screwed into the female screw 14 of the insertion tube portion main body 11 a. In addition, the extension cylindrical portion 17a has a collar member 18 having an outer diameter that matches the outer diameter of the portion of the perforated portion 11b that follows the outer cylindrical portion and the outer diameter of the insertion cylinder main body 11a. Is detachably mounted. The base of the extension cylindrical portion 17a serves as a stepped stopper 17c with which the corresponding end of the collar member 18 contacts.

 As described above, the gripping portion 12 is a means for attaching to the tine holder of the drilling device.

As shown in (a), (b), (c) and FIG. 7 (c), there is a large-diameter cylindrical portion integrally formed on the upper portion of the insertion tube main body 11a. This is so configured in relation to the tin holder. Therefore, according to the coring tine of Example 3, FIG.

As shown in (b) and (c), after inserting the insertion tube main body 11a and the perforated portion 11b in advance, the necessary number of the main body 11a and the perforated portion 11b are transferred to a general perforator for lawn cloth. Can be installed for coring work. Then, for example, when the coring work of a turf such as a golf course is performed by the drilling device equipped with the coring tine of the third embodiment, the soil core c discharged from the coring tine is finely cut. These are scattered on the lawn surface after passing through the perforator.

As shown in Fig. 9, when the coring tine is inserted into the turf t by the drilling device, the soil at the corresponding site relatively enters the turf as the insertion cylinder 11 descends. It enters and becomes soil core c. At this time, since the thin blades 13 are arranged in the perforated portion 1 1b at the lower part of the insertion tube portion 11 along the masquerade diameter line L2, the soil core c is divided into two parts. And rise relatively. In this tine, the thin plate-shaped blade 13 'is present, which protrudes downward from the lower end of the perforated portion 11b in the form of a single plate. Is formed and cut into an oval shape at the lower end of the perforated portion 1 1b. Since it is fixed so that the window-like part is opened between the raised part, the insertion resistance hardly increases. On the contrary, in addition to this, the lower end of the perforated portion 11b is formed with the wedge portion 15 which is tapered on both sides thereof, so that even the insertion resistance tends to be reduced.

 The soil core c that has penetrated into the perforated portion lib of the coring tie and has further entered the insertion tube main body 11a is discharged from here when it rises to the side opening portion 16. However, it is not possible to discharge from the part that is inserted into the lawn t. Therefore, when the tine is pulled up on the lawn t or during the next coring operation performed in the same manner The water is discharged from the side opening 16 while being pushed up by a new soil core c relatively entering from the lower end of the portion 11b.

 As described above, the soil cores c are divided into two by the laminar blades 13 in the process of entering the perforated portion lib and relatively ascending the perforated portion lib. Cracking will also occur. Therefore, when it is discharged from the side opening 16, it often becomes small soil particles or soil fragments that are more finely broken. In this way, the soil core c is cut on the turf surface after passing through the perforation device, and the resulting soil particles or soil fragments are scattered.

 After this, for example, if a broom or the like is used to sweep the soil grains or soil fragments derived from the soil core c, these soil grains or soil pieces will sink into the grass while breaking further finely. Becomes In this way, the labor of collecting the soil core c, which requires labor, is reduced, and at the same time, the filling operation can be performed with almost no preparation of the filling material. The work effort will be reduced, and the cost of filling material will also be reduced.

Furthermore, it goes without saying that the soil grains or pieces of soil derived from the soil core c are those of the target turf cloth t, and as the soil material, usually those close to the soil of the turf cloth t concerned are used. From the point of view that It can be said, for example, that it is a very suitable fill material. Also, the time to perform the coring and the time to perform the earthfill work overlap each other, which is also advantageous in that respect.

 In addition, by repeating the above-mentioned coring work, the perforated part lib becomes a solid such as stone when the perforated part 11 b at the lower part of the insertion tube part 11 is worn beyond a predetermined dimension or during the coring work. In the event of a collision that may cause damage, the perforated part 11b can be removed and replaced with a new perforated part 11b, and use can continue.

 In general, the use of coring tines can cause wear or damage near the blade at the lower end of the tine, but such phenomena rarely occur above it. Therefore, as described above, the insertion tube portion 11 is separated into the insertion tube portion main body 11a and the perforated portion 11b, and the perforated portion 11b which may be worn or damaged is further separated. In such a case, it is possible to replace the plug cylinder main body 11a, which occupies a large dimension, for a long period of time, thereby securing an economic advantage. .

 As shown in Fig. 8 (a) and (b), the male screw 17b protruding from the upper part of the former is attached to the lower end of the main body 11a of the insertion tube part 11a. It can be done very easily by screwing it into the female screw 14 formed at the lower end of the cable. Needless to say, it can be easily removed only by canceling the screwing relationship between the male screw 17 b and the female screw 14.

In a state where the male screw 17b and the female screw 14 are screwed together, the collar member 18 which is externally attached to the extension cylinder 17a is shown in FIGS. 6 (a), (b), and FIG. As shown in FIG. 8 and FIG. 8 (b), the lower end of the insertion tube main body 11a and the stepped stopper 17c of the perforated portion 11b are interposed between them. Therefore, in the above-mentioned coring work, the load applied to the perforated portion 11b is transmitted to the insertion tube portion main body 11a via the collar member 18 and the male screw 17b is Female thread 1 4 This will be dispersed. As a result, the male screw 17b and the female screw 14 are protected from a large load, and their damage is avoided. Through this, long-term use of the insertion tube main body 11a is ensured.

 Therefore, according to the tine for coring of the third embodiment, in addition to the above-described effects, only the perforated portion 11b where abrasion or damage has occurred is discarded and replaced with a new perforated portion 11b to continue use. It is possible to avoid waste due to the entire disposal due to partial wear or breakage, and to avoid economical loss.

 Next, the coring tines of the fourth embodiment will be described.

 As shown in FIGS. 10 (a), (b), and (c), the coring tines of the fourth embodiment are obtained by modifying the coring tines of the third embodiment in two respects. is there. One is that the insertion tube section 11 is not divided into the insertion tube section main body 11a and the perforated section 11b, and the whole is configured as an integral structure.The other is the thin plate blade 2 The shape of (3) was made into a substantially quadrangular plate shape, and the arrangement was not at the lowermost part of the insertion tube part (11) but at the lower part of the opening of the side opening part (16), and was fixed to the back surface That is. All other conditions are the same as in the third embodiment.

 Therefore, according to the coring tines of the fourth embodiment, similar to that of the third embodiment, a large number of the tines are attached to a generally used turf coring boring device, for example, for a golf course or the like. When the turf dough coring operation is performed, the soil cores discharged from the coring tines are finely cut and scattered on the lawn surface after passing through the perforator. .

The soil core, which has relatively entered the insertion tube portion 11 due to the coring operation, rises to the side opening portion 16, and is moved by the thin plate blade 23 fixed at the lower portion inside the portion. It is divided into two parts, and relatively rises in that state, and as in the case of the coring tine of the third embodiment, the liquid is eventually discharged from the side opening 16 force. „〜„

 PCT / JP03 / 05600

26

 As described above, these soil cores are divided into two by the laminar blades 3, and in the process, a number of cracks are formed therein, and therefore, the side openings 16 are formed. When it is discharged from the soil, it often becomes small soil particles or soil fragments that are more finely broken. Thus, just as in the case of Example 3, the soil particles or soil fragments derived from the soil core are scattered on the lawn surface after passing through the perforation device.

 Therefore, thereafter, it is possible to satisfactorily perform the dressing work using the soil particles or soil pieces derived from these soil cores, and it is possible to obtain exactly the same effects as in the third embodiment.

 Next, the coring tines of the fifth embodiment will be described.

 As shown in FIGS. 11 (a), (b), and (c), the coring tine of Example 5 is obtained by modifying the tine for coring of Example 4 in one point. is there. That is, the arrangement of the thin plate blade 33 is changed to an upper part instead of a lower part in the opening of the side opening part 16 of the insertion tube part 11 and fixed to the back surface thereof. Other than that, all are the same as Example 4. Therefore, according to the coring tines of the fifth embodiment, just as in the third and fourth embodiments, a large number of them are attached to a commonly used turf coring drilling device, for example, a golf club. When performing coring work on turf dough in a place, etc., the soil cores discharged from the coring tine become finely cut, and these are scattered on the lawn surface after passing through the perforator. Become.

 The soil core, which has relatively entered the insertion tube portion 11 by coring operation, rises to the side opening 16 and is divided into two by the thin plate blade 33 fixed on the upper inside. Then, in this state, as in the case of the coring tine of the fourth embodiment, the ink is eventually discharged from the side opening 16.

As described above, the soil core is divided into two by the thin plate 33, and many cracks are generated in the process in the process. Therefore, when it is discharged from the side opening 16, it often becomes small soil particles or soil fragments that are more finely broken. Thus, just as in the case of Examples 3 and 4, such soil particles or soil fragments derived from the soil core are scattered on the lawn surface after passing through the perforator. is there.

 Therefore, thereafter, it is possible to satisfactorily perform the dressing work using the soil grains or soil pieces derived from these soil cores, and it is possible to obtain exactly the same effects as in Examples 3 and 4. it can.

 Next, the coring tines of the sixth embodiment will be described.

 As shown in FIGS. 12 (a), (b), (c), (d) and (e), the coring tine of Example 6 has three points as compared with the coring tine of Example 3. This is a modification of the above. One is that the insertion tube portion 11 is not divided into the insertion tube portion main body 11a and the perforated portion 11b, and the whole is configured as an integral structure. That is, three thin blades 43, '43, and 43 are used instead of one thin blade 13. The other is the adoption of the three thin blades 43, 43, and 43, and instead of the wedge portion 15 that forms a single letter at the lower end, a hypothetical triangular shape at the lower end. The point is that the tapered portion 25 where the triangular line L3 occurs is replaced. The three thin plates 43, 43, and 43 are attached to the lowermost part of the insertion tube portion 11, and are particularly shown in FIGS. 12 (c), (d), and (e). As shown in the figure, the inner ends are abutted and connected to each other at their axes, and are extended circumferentially at an angle of 120 degrees to each other. It is fixed. As shown in FIGS. 12 (a) and (b), the thin blades 43, 43, 43 are formed so as to protrude downward from the lower end of the insertion tube portion 11 in an integrated manner. However, it goes without saying that their lower ends are blade portions. The upper part is formed with cutouts 43a, 43a, and 43a, which are removed so that the axial center is the lowest.

As shown in FIGS. 12 (a), (b), and (c), the tapered portion 25 is provided at the lower peripheral side of the insertion tube portion 11 at the lower end thereof with the three thin plate blades 4. 3, 43 and 43 are tapered so as to form an equilateral triangle virtual triangle line L3 having the outer ends as vertices.

 Thus, as shown in FIGS. 12 (a) and 12 (b), the lower end of the insertion tube portion 11 is formed by the notches 43a, 43a, 43a and the tapered portion 25. There is a window-like part that has come out on the back side between the part that has been cut up into a semi-elliptical shape upward.

 The coring tine of Example 6 is the same as that of Example 3 except that these three points and the outer diameter of the insertion tube portion 11 are as large as 18 mm. It is exactly the same.

 Therefore, according to the coring tine of the sixth embodiment, similarly to that of the third embodiment, a large number of the tines are attached to a commonly used turf coring boring device, for example, for a golf course or the like. When the coring work of the turf cloth is performed, the soil core discharged from the coring tine is in a state of being finely cut and scattered on the lawn surface after passing through the perforator. .

 During the coring operation, the soil core relatively entering into the insertion tube part 11 is simultaneously centered on the axis by the thin plate blades 43, 43, 43 fixed at the lower part inside. It is divided into three parts and relatively rises in that state, and is eventually discharged from the side opening part 16 as in the case of the coring tine of the third embodiment.

 As described above, the soil core is divided into three parts by the laminar blades 43, 43, and 43, and, similarly to that of Example 3, further cracks are generated therein during the process. Therefore, when it is discharged from the side opening 16, it often becomes small soil particles or soil fragments that are more finely broken. Thus, as in the case of the third embodiment, such soil particles or soil fragments derived from the soil core are scattered on the lawn surface after passing through the perforation device.

Therefore, after that, it is possible to carry out the embankment work satisfactorily by using the soil grains or soil fragments derived from these soil cores. 5600

 29

 The same effect as in 3 can be obtained.

 As described above, the insertion tube portion 11 is provided with three thin blades 43, 43, and 43 at the lower portion thereof. The lower end of the barrel 11 is integrally protruded from the lower end, and the upper parts thereof are cutouts 43a, 43a, 43a that are removed so that the axial center is the lowest. Since the lower end of the insertion tube portion 11 has a window-like portion which is formed on the back surface side between the lower end of the insertion tube portion 11 and is cut up in a semi-elliptical shape, the insertion resistance is slightly increased. In addition, since the tapered portion 25 is formed at the lower end of the insertion tube portion 11, the insertion resistance is further reduced.

 Finally, a description will be given of the coring tine of the seventh embodiment.

 As shown in FIGS. 13 (a), (b), (c), (d) and FIG. 14, the coring tine of Example 7 has three tines for the coring tine of Example 3. It has been modified in terms of points. One is that the insertion tube portion 11 is not divided into the insertion tube portion main body 11a and the perforated portion 11b, and the whole is configured as an integral structure. The other is that instead of the single thin blade 13, two crossed thin blades 53, 53 were searched for. With the use of two intersecting thin plate blades 53, 53, instead of the wedge part 15 that becomes a single character at the lower end, a virtual square line L4 of a regular quadrilateral at the lower end is tapered. It is replaced with parts 35.

The two thin blades 53, 53 are attached to the lowermost part of the insertion tube portion 11, and as shown in FIGS. 13 (b), (c), (d), in particular, The two thin blades 53, 53 are arranged so as to intersect at an angle of 90 degrees at the axis, and are fixed to the inner periphery of the insertion tube 11 at both ends. is there. One of the two blades 53, 53 has a cut groove in the center from the top to half the height from the top, and the other has a cut groove in the center from the bottom to half the height from the bottom. In advance, when both thin blades 5 3 and 5 3 cross each other at the center, In both cases, a cross-shaped crossing state is realized by fitting each other from above and below in each cut groove.

 As shown in FIGS. 13 (a) and 14, the thin blades 53, 53 are integrally protruded downward from the lower end of the insertion tube portion 11, It goes without saying that the lower end is a blade. The upper part has cutouts 53a and 53a formed so that the axial center is the lowest.

 As shown in FIGS. 13 (a) and 13 (b) and FIG. 14, the tapered portion 35 crosses the lower peripheral side of the insertion tube portion 11 in a cross shape from four directions downward. In this configuration, a virtual quadrilateral line L4 having a rectangular top with the outer end of each of the two thin plate-shaped blades 53, 53 formed at the lower end is tapered. is there.

 Thus, as shown in FIGS. 13 (a) and 14, the cutout portions 53a, 53a and the tapered portion 35 make the lower end of the insertion tube portion 11 semi-elliptical upward. There is a window-like part that has come out on the back side between the part that has been cut up.

 The coring tine of Example 7 described above differs from that of Example 3 except for these three points and that the outer diameter of the insertion tube portion 11 is as large as 24 mm. The same is true.

 Therefore, according to the coring tine of the seventh embodiment, similarly to that of the third embodiment, a large number of the tines are attached to a generally used turf coring perforation device, for example, for a golf course or the like. When the coring work of the turf cloth is performed, the soil core discharged from the coring tine is in a state of being finely cut and scattered on the lawn surface after passing through the perforator. . .

During the coring operation, the soil core relatively entering into the insertion tube portion 11 is simultaneously divided into four by a thin plate-shaped blade 53, 53 fixed at the lower part of the inside thereof around the axis. In this state, it rises relatively, and eventually, as in the case of the coring tie of Example 3, the side opening It will be discharged from 16 forces.

 As described above, the soil core is divided into four parts by the sheet-like blades 53, 53, and as in the case of Example 3, a large number of cracks are also generated therein during the process. Therefore, when it is discharged from the side opening 16, it often becomes small soil particles or soil fragments that are further broken. Thus, similarly to the case of the third embodiment, such soil particles or soil fragments derived from the soil core are scattered on the lawn surface after passing through the perforation device.

 Therefore, thereafter, the soil filling work can be performed favorably by using the soil particles or soil pieces derived from these soil cores, and the same effect as in the third embodiment can be obtained.

 As described above, the two thin blades 53, 53 are arranged at the lower part of the insertion tube portion 11, and these are, as described above, these. The lower end of the insertion tube 11 is formed as a cut-out portion 53a, 53a, which is formed so as to protrude downward from the lower end in an integrated state, and the upper portion of which is removed so that its axial center becomes the lowest. There is a window-shaped part that is cut out on the back side between the upper part and the part that is cut up in a semi-elliptical shape, so that the rise of the insertion resistance is not large. In addition, since the tapered portion 35 is formed at the lower end of the insertion tube portion 11, the insertion resistance is considerably reduced. Industrial applicability

 The tines for coring of the present invention can be widely applied to tines for lawn coring. Furthermore, it can be effectively used to perform a coring work by attaching it to a perforation device for grass.

Claims

δ 冃 range 1. A coring tine for perforating turf cloth, which is an insertion tube part for perforation and a gripper located on the upper part of the insertion tube part, for attaching to a tin holder of a perforation device. In the tine for coring consisting of  A coring tine formed in a wedge portion formed by removing a lower portion of the insertion tube portion in a wedge shape from both sides up to a virtual diameter line at a lower end.  2. The tie for coring according to claim 1, wherein the lower inner periphery of the insertion tube portion is configured as a small inner diameter portion, and the upper inner periphery thereof is configured as a standard inner diameter portion.  3. The tine for coring according to claim 1, wherein the lower outer periphery of the insertion tube portion is configured as a large outer diameter portion, and the upper outer periphery is configured as a standard outer diameter portion. 4. A coring tine for perforating turf cloth, which is an insertion tube portion for perforation and a gripper located at the top of the insertion tube portion, for attaching to a tine holder of a perforation device. In the tine for coring consisting of  A core ring tine configured so that the insertion tube portion is divided into an upper insertion tube portion main body and a lower perforation portion, and the upper end of the perforation portion can be detachably attached to the lower end of the insertion tube portion main body. .  5. An internal thread or an external thread is formed on the lower peripheral side of the insertion cylinder main body, and an external thread or an internal thread that can be screwed to the internal or external thread of the insertion cylinder main body is formed on the upper peripheral side of the perforated section. 5. The tine for coring according to claim 4, wherein the latter allows the latter to be detachably attached to the former. 6. A collar member is externally mounted on the base on the side where the male screw is formed, either on the lower peripheral side of the insertion cylinder main body or on the upper peripheral side of the perforated part, and a step-like stopper is formed on the inner end of the base. 6. The core ring according to claim 5, wherein, when the male screw and the female screw are screwed together, the collar member is sandwiched between the stepped stopper portion and an outer end of the female screw. For tying. 7. A coring tine for drilling turf cloth, which is a piercing insertion tube portion and a gripper located above the insertion tube portion, for attaching to a tine holder of a piercing device. In the tine for coring consisting of  Between the lower end opening and the upper end opening or the side opening of the insertion tube portion, a cutting blade member for cutting soil core that enters from the lower end opening and rises relatively when drilling is provided. Tines for coring.  8. One sheet-like blade is adopted as the cutting blade member, and the one sheet-like blade is moved from the lower end opening to the upper end opening or the side opening of the insertion cylinder. 8. The tine for coring according to claim 7, wherein the tine is disposed so as to cross the axis and to have its cutting edge directed downward.  9. Adopt three thin blades as the cutting blade member, and connect the three thin blades from the lower end opening to the upper end opening or the side opening of the insertion tube portion. 8. The tine for coring according to claim 7, wherein the tine is disposed so as to extend in a circumferential direction at an angle of 120 degrees with respect to its axis at any part, and the cutting edges thereof are arranged downward.  10. Two thin blades are adopted as the cutting blade member, and the two thin blades are moved from the lower end opening to the upper end opening or the side opening of the insertion tube portion. The coring tine according to claim 7, wherein the tine is arranged so as to intersect at any angle with the axis at an angle of 90 degrees and the cutting edges thereof are arranged downward.  1 1. A cutting blade member is arranged at the lower end of the insertion tube portion, and a portion of the lower peripheral side of the insertion tube portion where the side end of the thin plate blade is not in contact is tapered toward the lower end. The coring tine according to claim 8, 9 or 10 which has been deleted so that 12. A cutting blade member is arranged at the lower end of the insertion tube portion, and the lower end of the thin blade is projected downward from the lower end of the insertion tube portion so that the center of the shaft is at the upper end. To form a notched portion which is deleted downward, and Of the lower peripheral side of the insertion tube portion, a portion where the side end of the thin plate blade is not in contact is deleted so as to taper toward the lower end, and the lower end of the insertion tube portion thus generated is removed. 10. The tine for coring according to claim 8, 9 or 10, wherein a window-like portion is formed on a rear surface side between a portion cut up in a semi-elliptical shape upward and the notch portion.