JP3189395B2 - Seedling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling plant provided with a hole opening device for forming a seedling planting hole, a transplanting device for planting seedlings in the seedling planting hole, and a covering ring for covering the planted seedlings. Things.

[0002]

2. Description of the Related Art As a conventional technique of this kind, Japanese Utility Model Laid-Open No. 61
There is a seedling planting machine as shown in Japanese Patent No. 22417.

[0003]

In the above-mentioned prior art, the earth covering ring contacts the upper surface of the ridge and idles. In a field where the multi-film is spread, the multi-film is pushed in the traveling direction. As a result, the multi-film was loosened and proper opening and seedling planting could not be performed.

[0004]

In order to solve the above-mentioned problems of the prior art, the present invention provides a hole opening device 37 for forming a seedling planting hole D in a field and a planting seedling in the seedling planting hole D. In the seedling transplanter provided with the attaching transplanting device 32, the seedling transplanter is provided with an earth covering wheel 74 whose outer peripheral ground contact portion is driven and rotated at a peripheral speed faster than the planting traveling speed of the body.

[0005]

According to the present invention, since the earth covering portion 74 is provided so as to be driven and rotated at a peripheral speed higher than the planting traveling speed of the fuselage at the peripheral speed, the field on which the multi-film is laid is provided. When planting seedlings, it is possible to prevent a situation in which the multi-film is loosened, so that appropriate opening and seedlings can be planted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A walking vegetable seedling planting machine according to an embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a transmission case, and a wheel transmission case 2 that faces downward on both left and right sides.
2 are provided rotatably, and left and right driving wheels 3 are mounted on the front ends of the wheel transmission cases 2. The left and right driving wheels 3 are connected to connecting rods 5 which can adjust the length of the upper ends of swing arms 4 provided integrally with the respective wheel transmission cases 2.
5 is connected to the balance device 6 via the ridge 5 when the field is inclined left and right (the ridge C on which the multi-film A is laid).
In the example, the embankment B is provided on the multi-film A between the ridges C so that the multi-film A does not peel off. ), So that it can be adjusted so that the front part of the body is substantially horizontal by moving upside down in cooperation with each other.

The left and right driving wheels 3.3 are provided with a transmission case 1 such that the peripheral speed of the ground contact portion is 0.28 m / s.
Although it is set to be more driven and rotated, the actual forward speed of the aircraft is about 0.25 m / s because the slip of the wheels is about 10% in an actual field. Reference numeral 7 denotes an engine, which is directly connected to the front end of the transmission case 1.

Reference numeral 8 denotes a clutch case having a centrifugal clutch therein. The clutch case 8 is provided so as to transmit the power of the engine 7 to the transmission case 1 when the rotation of the engine 7 becomes equal to or higher than a predetermined value (above the seedling transplantation operation proper rotation speed). I have. Reference numeral 9 denotes a planting portion transmission case, which is fixedly connected to a rear left portion of the transmission case 1 via a transmission case 10.

Reference numeral 11 denotes a sub-planting transmission case, which is fixedly connected to the rear part of the planting section transmission case 9 inclining obliquely rearward and upward in the body. Reference numeral 12 denotes a handle support frame, the base of which is fixed to the upper end of the sub-planted transmission case 11. Reference numeral 13 denotes a handle, and the handle support frame 1
2 is fixed to the upper end.

Reference numeral 14 denotes a seedling mounting table, and left and right standing frames 15 and 15 are provided.
Seedling transfer belt 1 stretched and stretched in the front-rear direction around the bottom plate space of the frame made up of the front and rear bottom plates 16 and 17
8 is provided. 19 is a belt winding drive roll, and 20 is a belt winding driven roll. Then, the belt winding drive roll 19 rotates the planting portion transmission case 9 so as to rotate by a certain amount when the seedling mounting table 14 reaches both right and left ends.
It is driven via an appropriate intermittent drive mechanism having a driven cam 21 driven by a drive cam fixed to a drive shaft that extends further. However, the seedling transfer belt 18 rotates by a fixed amount (by the width of one seedling) when the seedling mounting table 14 moves to the left and right ends, and transfers the seedlings placed on the seedling mounting table 14 to the following seedling receiving frame. It is configured to transfer toward 22.

Reference numeral 22 denotes a seedling receiving frame, which is located on the rear end side of the seedling mounting table 14 and is attached to the sub-planting transmission case 11, and is provided with a seedling taking-out port at the left and right central portions. Numerals 23 are seedling receiving rods composed of rods, and the seedling mounting table 14 above the seedling receiving frame 22.
Are fixed at equal intervals to a mounting plate 24 laid horizontally between the left and right standing frames 15 and 15 and the lower ends thereof are opened in a comb-like shape. Each of the seedling receiving rods 23. To support the rear side of the pot container. A seedling fixing claw 25 and a seedling movable claw 26, which will be described later, rush into the seedling mounting table 14 so as to sandwich the seedling receiving rod 23 therebetween to split and hold one seedling (one pot pot). It works as follows.

Reference numeral 27 denotes a front support roller of the seedling mounting table 14, and the seedling mounting table 14 is a rail 28 fixed to the lower surface of the front part.
The helical shaft which is transmitted and rotated by a seedling table moving case 9 ′ having a lower portion fixed to one side of the planting portion transmission case 9 while riding on the front support roller 27, and the helical shaft Are driven by a general left-right driving mechanism 29 constituted by a sliding cam connected to the bottom surface of the seedling mounting table 14 and reciprocated right and left. The rear side of the seedling mounting table 14 is supported via a sliding body 31 fixed to the rear lower surface of the seedling mounting table 14 by a side-view square guide rail 30 formed integrally with the seedling receiving frame 22. ing.

Numeral 32 denotes a transplanting device. A seedling fixing nail 25 and a seedling movable nail 2 are mounted on a box-shaped implanting tool body 33 having a hollow inside.
6 with two iron plate seedling planting nails and seedling separating tool 34,
An operation mechanism of the seedling movable claw 26 is provided inside the seedling plant main body 33 so that the operation of clamping the seedling or opening the clamping seedling is performed. Then, the seedling separating tool 34 is configured to move down at the same speed as the speed at which the seedlings 25 and 26 move upward from the moment when the seedlings held by the seedlings 25 and 26 are released, Even if the seedlings 25 and 26 move upward from the position where the seedlings are planted in the field by the seedlings 25 and 26, they do not move.

The main body 33 of the transplanting device 32 is pivotally attached to the first rotating case 35, and the first rotating case 35 is pivotally attached to the second rotating case 36.
A transmission mechanism is incorporated in the first rotating case 35 and the second rotating case 36 so that the trajectory P drawn by the leading ends of the 5.26 is narrow in the front-rear direction and long in the vertical direction, and the base of the second rotating case 36 is provided. Is attached to the sub-planted transmission case 11.

Reference numeral 37 denotes a hole opening device for forming a hole D on the upper surface of the ridge C by making a hole in the multi-film at the position where the seedlings are to be planted. The upper portions are rotatably mounted on pivot shafts 40 and 41, respectively, in a state where the base portions thereof are fitted in the inside of a front view portal type fixing portion 39 fixed to the support shaft 38. The pivotal link 42, the lower pivotal link 43, and the distal end of the upper pivotal link 42 and the lower pivotal link 43 are fitted to the inside thereof and pivotally connected to the distal ends thereof by pivot shafts 44 and 45. A U-shaped plate 46 made of an iron plate supported, a hole forming tool 49 fixed to the U-shaped plate 46 with bolts 47 and nuts 48, and a drive shaft 50 extended from the planting portion transmission case 9. A drive cam 51 fixedly mounted on the upper arm and an upper swing link 42 for engaging with the drive cam 51 A driven cam 53 composed of a bearing rotatably supported at 2; and a helical spring 54 for urging the lower swing link 43 in the direction a and pulling up the hole opening device 37 upward. It consists of. However, when the drive shaft 50 is driven and rotated, the drive cam 51 also rotates and engages with the driven cam 53, and the upper swing link 42 is pushed down by the urging force of the winding spring 54. Is configured to move downward. The drive cam 51 is provided with a cam surface 51 'that operates so that the tip of the hole forming tool 49 temporarily stops to make a hole in the multi-film at the lowermost end of the operation locus.

The hole forming tool 49 is formed of an iron plate material and has a U-shaped cross section in which the left and right sides are bent at right angles, and the U-shaped concave side 49 ′ is a multi-film A.
And is fixed to the U-shaped plate 46 so as to be a working surface for forming a seedling planting hole D on the upper surface of the ridge C. Further, as will be described later, since the hole forming tool 49 is heated to a high temperature, in order to prevent this heat from being transmitted to the machine body side, between the U-shaped plate 46 and the hole forming tool 49 and between the bolt 47 and the hole forming tool 49. The heat insulators 55 and 56 are provided between the heat insulators 49 and 49.

Reference numeral 57 denotes a gas burner nozzle fixed to the hole forming tool 49 with bolts.
The gas supplied from a gas cylinder 58 provided in a pipe 58 'made of a rubber tube is burned to emit a flame to the hole forming tool 4.
9 is provided so as to squirt downward along the back surface of the base plate 9. Then, as shown in FIG. 6, the nozzle 57 is set so that the flame is blown out only when the hole forming tool 49 is located at the lowest position on the movement locus and forms the seedling planting hole D. The flame is melted to shrink the multi-film a, which is a piece of the hole to be opened by scratching the multi-film A with the hole forming tool 49, so that a clean hole as shown in FIG. 7 can be formed.

As shown in FIG. 3, a cooling fin 58 "is provided on a pipe 58 'for supplying a gas to a nozzle 57 of a gas burner to prevent the temperature of the pipe 58' from becoming high. The left and right rear wheels 59, 59 are provided at the rear of the fuselage behind the left and right drive wheels 3, 3, and are provided on the left and right sides of the support shaft 60. The arms 62, 62 fixed to cylindrical bosses 61, 61 rotatably supported respectively, are freely rotatably supported at the ends thereof. 26 of the tip is arranged such that the vehicle body front-rear direction substantially the same position at the implant location P ₁ and substantially a side view of the draw trajectory P. Then, the rotating arm 63, to each of the cylindrical bosses 61, 61 The base of 63 is fixed, and the upper ends of the rotating arms 63 Is connected to the right and left side portions of said balance device 6 via a connecting rod 64, 64 can be adjusted in length by Nbakkuru.

Reference numeral 65 denotes a hydraulic device, which comprises a hydraulic cylinder 66 and a hydraulic valve 67, and is fixed to the transmission case 10. Reference numeral 68 denotes a hydraulic piston, which is mounted on the hydraulic cylinder 66 so as to be able to move back and forth in the lower direction, and the balance device 6 is attached to the tip of the hydraulic piston. On both left and right sides of the balance device 6, the front ends of the connecting rods 64, 64 connected to the left and right rear wheels 59, 59, and the rear ends of the connecting rods 5, 5 connected to the left and right driving wheels 3.3. Are pivotally supported by pins, and the left and right rear wheels 59, 59 and the left and right drive wheels 3, 3 are configured to move up and down as the hydraulic piston 68 moves in the lower direction.

Reference numeral 69 denotes a sensor for detecting the upper surface of the ridge C. The lower portion thereof moves up and down in contact with the multi-film A on the upper surface of the ridge C, and the upper portion thereof is linked to the hydraulic valve 67. The upper surface of the ridge C is detected so that the applied depth H is always constant, and the hydraulic valve 67 is switched to move the hydraulic piston 68 in the lower direction to move the rear left and right wheels 59 and 59 and the left and right driving wheels 3. 3 is configured to move up and down.

Numeral 70 designates a mulling device for burying seedlings from the right and left sides of the seedlings planted on the upper surface of the ridge C to fill the seedling planting holes D and securely plant the seedlings in the ridge C. Arm 71 whose front end is pivotally supported at the front end and transmission case 1 with sub-planting
1, a support shaft 72 for supporting the rear end of the swing arm 71, a left and right rotation shaft 73 supported by the swing arm 71, and a truncated cone fixed to the left and right rotation shaft 73. Left and right earth covering rings 74, 74 and transmission case 1
Shaft 75 which transmits the driving force from the shaft and the driving force of the flexible shaft 75 to the left and right earth covering wheels 74.7
4 and a bevel gear transmission mechanism 76 for transmitting the rotation to the outer peripheral grounding portions of the left and right earth covering rings 74 and 74 is set to be 0.28 m / s.

Therefore, the left and right earth covering wheels 74 are more than the actual peripheral speed of 0.25 m / s in consideration of the sliding of the left and right driving wheels 3.
Since the peripheral speed of 74 is set to be faster, the multi-film A spread on the ridge C acts so that the left and right covering rings 74, 74 are stretched, so that the multi-film A is not loosened. A clear seedling planting hole D can be opened by the hole device 37, and the multi-film A is scratched and broken when the hole forming tool 49 of the hole opening device 37 is pulled out from the ridge immediately after the hole formation. Can be prevented (when loose, it is easy to scratch).

A spring 77 is inserted through the support shaft 72 so as to urge the rear end of the swing arm 71 downward so as to urge the left and right covering soil rings 74 in the ground contact direction. Make up. Reference numeral 78 denotes an urging force adjusting device, which can adjust the above urging force by turning the grip dial 79 to adjust its position up and down along the support shaft 72.

Numeral 80 denotes a brush mounted on the body so as to be driven and rotated in two directions so as to remove water droplets, mud, dust and the like adhering to the upper surface of the multi-film A on the upper surface of the ridge C.
The swing arm 80 ′ is provided so as to be urged in the direction of e that contacts the multi-film A. 81, 81 are left and right driving wheels 3 provided on the left and right wheel transmission cases 2, 2 respectively.
3 is a general left and right side clutch lever for operating the left and right side clutches.

Reference numeral 82 denotes a planting clutch lever for operating or stopping the seedling mounting table 14, the transplanting device 32, and the hole opening device 37. Reference numeral 83 denotes a hydraulic lever, which is linked to the hydraulic valve 67 via a connecting wire, and automatically drives the left and right driving wheels 3.3 and the left and right rear wheels 59, 59 by detecting the upper surface of the ridge C by the sensor 69. Automatic control position adjusted dynamically, left and right drive wheels 3.3 and left and right rear wheels 59
It is configured to be able to switch to an airframe lift position for forcibly lowering 59.

Reference numeral 84 denotes a throttle lever for adjusting the number of revolutions of the engine 7. Next, the operation of the above example will be described.
9. 59. A paper seedling incubator in which the body is set so that 9.59 straddles the ridge C of the field on which the multi-film A is stretched, and pot containers are connected to the seedling table 14 vertically and horizontally at predetermined intervals. After the pot-shaped vegetable seedlings raised in
Is started and the throttle lever 84 is raised from the idling speed to the seedling planting speed, the power of the engine 7 is transmitted to the rotating parts via the centrifugal clutch in the clutch case 8, and the body is rotated by the rotation of the left and right drive wheels 3,3. Will be promoted.

At this time, when the planting clutch lever 82 is operated to bring the clutch into the engaged position, the seedling mounting table 14 is reciprocated in the left-right direction by the power of the engine 7 via the left-right driving mechanism 29. Are moved left and right while being received by the seedling receiving frame 22, the seedlings are fed out to the seedling taking-out port, and are sequentially grabbed by the seedling claws 25 and 26 that draw the seedling locus P. On the other hand, the drive cam 51 fixed to the drive shaft 50 is engaged with the driven cam 53 provided on the upper rocking link 42 of the hole opening device 37 to lower the upper rocking link 42 to the urging force of the winding spring 54. Then, the hole forming tool 49 is moved down to form a seedling planting hole D on the upper surface of the ridge C while making a hole in the multi-film A. At this time, the hole forming tool 49 scratches the multi-film A to make a hole, so that a piece a of the multi-film is formed. However, it is melted and shrunk by the flame ejected from the nozzle 57 of the gas burner, and as shown in FIG. A beautiful hole is made.

When the hole is formed by the hole forming tool 49, the peripheral speed of the left and right earth covering wheels 74 is faster than the actual peripheral speed of 0.25 m / s in consideration of the sliding of the left and right driving wheels 3.3. Since it is set, the multi-film A laid on the ridge C acts so that the left and right covering rings 74 are stretched, so that the multi-film A is not loosened. The hole D can be formed, and a situation in which the multi-film A is scratched and broken when the hole forming tool 49 of the hole forming device 37 is pulled out from the ridge immediately after the hole formation can be prevented.

Then, the seedlings 25 and 26 holding the seedlings rush into the seedling mounting holes D opened by the hole forming tool 49, and the seedlings 25 and 26 separate to open the seedlings. From the moment, the seedling separating tool 34 is moved down at the same speed as the speed at which the seedling-planting nails 25 and 26 move upward, so that the seedling is not moved from that position and is placed at that position, and the seedling is transplanted. At this time, since the cut end a of the multi-film A is melted and shrunk, it does not hit the seedling and does not hurt the seedling.

On the other hand, the left and right driving wheels 3 and 3 and the right and left rear wheels 59 and 59 are automatically adjusted to move up and down by the detection of the upper surface of the ridge C by the sensor 69, so that the seedlings are always planted on the ridge C at a predetermined planting depth H. Planted at. Further, since the rotating brush 80 removes water droplets, mud, dirt, and the like adhering to the upper surface of the multi-film A on the upper surface of the ridge C, it is possible to prevent the temperature of the hole forming tool 49 from being lowered by water, and to reduce the temperature. Can be drilled cleanly, and good seedling planting work can be performed.

When the operation of the seedling table 14, the transplanting device 32, and the hole opening device 37 is to be checked by stopping the movement of the airframe, the throttle is operated in a state where the left and right side clutch levers 81 are disengaged. By increasing the rotation speed of the engine 7 with the lever 84 and connecting the centrifugal clutch to engage the planting clutch lever 82, only the seedling mounting table 14, the transplanting device 32, and the hole opening device 37 can be operated. it can. In the above embodiment, the left and right earth covering wheels 74, 74 are taken into account in consideration of the sliding of the left and right driving wheels 3, 3.
Is set to 0.28 m / s, but it goes without saying that the peripheral speed may be higher than 0.28 m / s. Further, in the above-described embodiment, the example in which the present invention is applied to the walking-type vegetable seedling planting machine is shown. However, it can be said that the present invention may be applied to a riding-type vegetable seedling planting machine or any other seedling planting machine. Not even.

Finally, a second embodiment of the mulling apparatus 70 will be described with reference to FIG. In the second embodiment, the support structure of the swing arm 71 and the support shaft 72 is the same as that of the first embodiment, but the transmission structure is different. That is, the flexible shaft 75 that transmits the driving force from the transmission case 1 is connected to the front shaft of the drive-side clutch body 91 that is supported by the bearing 90 whose upper part is fixed to the auxiliary-planted transmission case 11. . The rear part of the drive-side clutch body 91 has a truncated conical shape and a recessed space inside to form a clutch surface. On the other hand, a transmission case 92 containing the same bevel gear transmission mechanism as in the first embodiment is fixed to the swing arm 71, and left and right rotation shafts 73 are provided from both left and right sides of the transmission case 92.
The left and right covering soil rings 74 and 74 are attached to the left and right rotating shafts 73 and 73 by projecting the 73. An input shaft 93 for transmitting power to an internal bevel gear transmission mechanism is protruded from a front portion of the transmission case 92, and a driven clutch body 94 is fixed to a front end of the input shaft 93, and the driven clutch body 94 is fixed. Is used as a clutch surface and is opposed to the clutch surface of the drive-side clutch body 91 described above. Both clutch surfaces are in a state in which the rear end of the swing arm 71 is supported by the retaining piece 95 of the support shaft 72 (the left and right soil rings 74, 74).
Is lifted from the field scene and hung in the air)
Therefore, there is a slight gap so that the driving force of the flexible shaft 75 is not transmitted to the input shaft 93.

In other words, when the left and right soil covering wheels 74 are in contact with the field scene (the upper surface of the ridge C) and the swing arm 71 swings upward (when the pressure-reducing soil covering work is performed), the clutch surfaces of both of them are moved. The left and right earth covering wheels 74 are automatically driven upon joining.

[Brief description of the drawings]

FIG. 1 is an overall side view of a walking type vegetable seedling planting machine.

FIG. 2 is a side view of an opening device.

FIG. 3 is a view of an essential part from the X direction in FIG. 2;

FIG. 4 is a YY end view of FIG. 3;

FIG. 5 is a sectional view for explaining the operation of the main part.

FIG. 6 is a sectional view for explaining operation.

FIG. 7 is a sectional view for explaining operation.

FIG. 8 is a side view of a main part showing a second embodiment.

[Explanation of symbols]

 Reference Signs List 3 drive wheel 14 seedling mounting table 32 transplanting device 37 hole opening device 49 hole forming tool 57 gas burner nozzle 59 rear wheel 69 sensor 70 mulling device 74 covering wheel 80 brush a multi-film piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01C 11/02 A01C 5/06 A01G 13/00

Claims (1)

(57) [Claims] 1. An opening device 3 for forming a seedling planting hole D in a field.
7 and a transplanting device 32 for planting seedlings in the seedling planting holes D, a covering soil ring 74 whose outer peripheral ground contact portion is driven and rotated at a peripheral speed faster than the planting traveling speed of the body. A seedling transplanter characterized by being provided.