DE1258171B - Device for distributing material over a surface - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

AOIc

German class: 45 b -17/00

Number: 1258 171

File number: L 39746III / 45 b

Filing date: August 9, 1961

Open date: January 4, 1968

The invention relates to a device for distributing material over a surface, with at least a container having a discharge opening, in which the opening is closed by a closure member to open or close is adjustable with the help of an adjusting device and in different Positions can be determined, the adjusting device having a cam and a cam interacting with this Has stop.

Adjusting devices of the aforementioned type are known. The cam and stop are integral parts of these from articulated or fixed in certain positions to each other parts that do not Have larger games, so that the cam and stop within the existing pivoting ranges always have to assume a precisely defined position to each other.

With the device according to the invention, a quick opening and closing of the closure member is intended be made possible; on the other hand, this device is simple and free of articulated levers and ensures reliable function even if the closure member is a significant one for manufacturing reasons Has game.

According to the invention this is achieved in that the stop or the cam or both parts are only connected by a resilient connection with a further part of the adjusting device. In this way, there is a safe interaction despite the necessary play of the closure member of cam and stop, since the resilient connection relative shifts between Can compensate for cam and stop and also have enough large contact surfaces for the Cam allows.

In an embodiment of the invention, it is useful if the between the stop, cams or both parts and a further part of the adjusting device provided resilient connection tensioned is when the cam and the stop are in contact with each other, the spring connection can consist of a leaf spring.

In an advantageous embodiment of the invention, the closure member connected to the spring can in be pivotable about an axis with respect to the adjusting part carrying the cam.

In an embodiment of the invention, it can furthermore be expedient that the closure member has the discharge openings able to lock, in which the stop and the cam are in contact with each other stand.

A particularly simple operation of the Vorrich device for distributing material over
a surface

Applicant:

C. van der LeIy N.V., Maasland (Netherlands)

Representative:

Dipl.-Ing. A. Boshart and Dipl.-Ing. W. Jackisch, Patent Attorneys, 7000 Stuttgart N, Menzelstr. 40

Named as inventor:

Ary van der LeIy, Maasland (Netherlands)

Claimed priority:

Netherlands of August 26, 1960 (255 290),

of November 23, 1960 (258 300),
dated January 6, 1961 (259 828)

device arises when a rope is coupled to the closure member via the spring connection in such a way that

a5 that when tensile force is applied, cams and stops are displaceable to one another for mutual coupling and uncoupling. The rope can do it be guided around a guide roller which is attached to the adjustment part and whose axis of rotation is below is at an angle of more than 5 ° to the vertical. An advantageous embodiment of the invention results when the cam by means of a spring in the form of a rod with the associated part of the Adjusting device is connected. The cam can through the bent end of the spring be formed, which can consist of two parts that have an angle of less than 90, preferably about 15 °.

The invention is described below with reference to two exemplary embodiments shown in the drawings explained in more detail. It shows

F i g. 1 shows a plan view of a device that can be attached to the lifting device of a tractor for distributing material over a surface, but without its container for the grit,

F i g. FIG. 2 is a view of the FIG. 1 shown device in the direction of arrow II in F i g. 1 in larger scale, and in partial sectional view,

F i g. 3 shows a partial representation of the in FIG. 1 illustrated plan view, in the various working parts a different position than in FIG. Take 1,

709 717/49

3 4

F i g. 4 shows a section from the illustration showing the associated adjustment part 31 displaceable and

measure F i g. 3 on a larger scale,. fixable, which has an arm 32 which has a

F i g. 5 is a view of the representation according to FIG. 4 between two tabs 34 attached to the ring 29

in the direction of arrow V, attached horizontal axis 33 pivotable with

6 a ring 29 essentially corresponding to FIG. 3 is connected. At the free end of the

A corresponding illustration of a second embodiment of arm 32 is an arm 35 extending transversely thereto

the device according to the invention is provided in a plan, which is provided with a scale division

sees, and on which a sliding, through a wing

Fig. 7 on a larger scale a section along nut 37 lockable stop 36 is attached.

the line VII-VII in Fig. 6, to This stop can under the effect of a two-

Fig. 8 is a view of an individual part of the see the arm 32 and one of the legs of the

Embodiment according to FIG. 6 used connecting rod 15 arranged tension spring41, which the arm32

Seeks to adjust adjusting device in the direction of arrow VIII in the direction of arrow 43, with

F i g. 6 and one on a side arm 45 of the arm 18.

9 shows a section of the cams 44 arranged in the device. the

6 in a view along line IX-IX in tension spring 41 is on the one hand by a tongue 40 which

Fig. 6. by bolts 39 on a support 38 and over this

Reference is first made to FIGS. 1 to 5 and is attached to the arm 32, and on the other hand by

take the one attached to the lifting device of a hook 42 attached to the rod 15

Hold tractor attachable device for distributing 20.

of material over a surface, in the following on the adjustment part 14 is shown on a scattering device called for short. The frame opposite side of the arm 18, the device has a curved frame in alignment with the side arm 45 lying side arm 49 beam 1, whose parallel a cam 48 is attached in the same direction. With this cam, one end 2, 3 25 extending at a distance from one another can be connected via a resilient connection, which in the present case has one shown in FIG. 2 and the case is formed by a leaf spring 46, with which for this purpose guide and holding bonds connected to one another by means of struts 5, 6 are connected with one another adjusting part 31. The connection with the non-presentation part 47 come into operative connection. The block-fed lifting device of a tractor takes place mig trained holder part has for this purpose on a V-shaped stop 50 and provided with frame beam 1 pins 7, 8 and a cooperating guide cam 51 on a not shown, fixed to the frame on a connection for the lower link on the 30 side Fastening member for the and forms with an adjacent side an upper handlebar of the lifting device. Approximate surface 52 for the cam 48. Furthermore, have

Below the container 4 is, then to this, the cam 48 and the cam attached to the cam.

this, a ring 9 is arranged, which is approximately the same in the middle on an end of the guide surface 52 facing 35

underlying spreading member 10 rests. The distance 57 or 58 from the axis 24 of the spreading element

Cylindrical lower part 25 of the belt 10 surrounded by a ring. The leaf spring 46 is on the adjustment part 31

holder and the ring itself are concentric to the attached to the support 38.

Axis 24 of the spreading member on which the spreading on the guide and mounting part 47 is white Material provided by three provided in the ring 9 40 ter an eyelet 53 on which to operate Openings 11, 12, 13 arrives. Against entrainment of the adjusting part 31 serving rope 54 is attached. by rotating in the direction of arrow 105, the rope is passed from the eyelet over a guide spreading element 10, the ring is guided by an adjustment part 14 roller 55, which is secured to one on the arm 18, which is attached from an approximately U-shaped bent, orderly holder. From the leadership diverging Legs having rod 15 45 roll 55 can the rope over a curved part exists, the free ends of which are attached to the ring 9 of the beam 1 or via a special Lugs 16,17 are hinged and on the web, provided eyelet, which is not shown here, for tractors are led towards the side facing away from the thighs, extending, an arm 18 is attached, the free When the device is described by At the end with a downwardly directed pin 19, the adjustment part 31 adjusts the position of the slides 26 to 28 see is. The pin is involved in locking the adjustment with respect to the openings 11 to 13 in the ring 9 insertable into holes 20 and 22, which is true in one. The maximum achievable opening at Frame bar i attached bar 21 or in a wide area is influenced by the position of the stop 36 Required after this bar. To help in determining the maximum opening brace 23 are provided. A good orientation possibility due to the 55 nautical distance rotation of the ring 9 and the provided therein, the stop 36 is with a pointer part and Openings 11 to 13 can be the point of impact of the arm 35 which is used to attach the stop Scatter material on the spreader member and thus also provided with a scale. In one location set any desired spreading pattern. of the stop according to FIG. 1 are the openings 11

The material outlet openings 11 to 13 are completely 60 to 13 open to eight tenths, or partially covered by a closure member, the adjustment device shown enables a which is formed by three slides 26 to 28, the almost sudden closing and one as well fastened to a ring 29 surrounding the ring 9 quick opening of the openings 11 to 13. Should the are. The ring 29 rests on the tabs 16,17 and openings are closed so that the rope is on a 65 54 attached to the back of the ring 9 in the direction of the arrow 59 exerts a pulling force from the pin 30 on. practiced. Under the influence of this tensile force, the ring 29 and the slides 26 to 28 are in ken without any substantial deflection of the leaf spring 46 with respect to the ring 9 by the adjustment device - this is so dimensioned in its stiffness that it only

responds to a load lying above the maximum force of the tension spring 41 - the guide and Bracket part 47 and the associated adjustment part 31 with the ring 29 around the axis 24 of the Spreading member 10 until the slide 26 attached to the ring strikes against the tongue 16 attached to the ring 9. When the slide hits the tongue, the guiding and holding part 47 is just in front of it the cam 48, so that the last distance to the engagement of the cam in the holder part against the Pressure of the leaf spring must be pulled further. In this phase, the guide surface 52 of the comes first Bracket part 47 on the cam 48 to rest. When you pull the bracket part the slides Cams along the guide surface and hits the guide cam 51, which in some Distance is arranged in the extension of the guide surface 52 and together with the stop 50 a recess 60 delimits. When the cam 48 is pulled further, the cam 48 slides into this recess the guide cam 51. A further pulling is now after the cam 48 in the recess 60 rests on the guide cam 51, no longer possible, since the guide cam is now a Forms abutment for the cam 48. If the tensile force on the rope 54 is now canceled, then firstly seeks the leaf spring 46 to snap back into its relaxed position and, secondly, the tension spring 41, the adjustment part 31 to pivot together with the leaf spring 46 in the direction of arrow 43. By the above Assignment of the cam 48 and the mounting part 47, the cam arrives in this case the V-shaped recess of the stop 50, whereby the adjustment part 31 in the in F i g. 3 shown Location is fixed. The secure position of the cam 48 in the recess is ensured by that the leaf spring 46 is still under a certain tension in this position. To when attracted of the guide and mounting part 47 on the cam 48 a hooking of the mounting part on the To prevent side arm 49, the free end 49 a is bent slightly downwards.

Conversely, starting from a position according to FIG. 3, the openings 11 to 13 opened again a tensile force in the direction of arrow 59 is exerted on the rope 54 again. Under the influence of this tensile force, the holding part 47 is against the direction of arrow 43 and slightly in the direction pivoted on the axis 24 so that the cam 48 out of the V-shaped stop and out the recess 60 can slide out. If the tensile force on the rope is now canceled, it moves the mounting part 47 in the direction of arrow 43 and away from the axis, so that the cam 48 does not can slide more into the V-shaped stop 50. The spring 41 now becomes the adjustment part 31 together with the ring 29 and the slides 26 to 28 in the position of the stop 36 adjusted back certain starting position. The adjustment described is independent of the respective fixed position of the ring 9 and the respective position of the stop 36 is always possible.

Manufacture and assembly require between the ring 9 and the cylindrical lower part 25 of the Container 4 on the one hand and between the ring 29 and the ring 9 on the other hand each have a certain amount of play. As a result, the distance 57 between the cam 48 and the axis 24 and the distance 58 between the end of the guide surface 52 facing the cam 48 and the axis 24 middle The distance 57 can be the size of the play between ring 9 and cylindrical lower part 25 of the container 4, the distance 58 by the sum of the games between ring 9 and cylindrical part 25 and between ring 29 and ring 9 increase or decrease. The maximum possible relative change between the distances 58 and 57 corresponds to the size of the game between the rings 29 and 9. These changes in distance affect the function of the invention Adjusting device not, since the holder part 47 can be designed so that the Guide surface 52 when pulling the rope 54 in the direction of arrow 59 always to rest on the cam 48 comes and since the leaf spring 46 can give way in the radial direction at any time.

In order to keep the possible changes in distance as small as possible, it can be advantageous to use the Spreader member 10 concentric to the axis 24 to arrange a disc 10 ^ 4, which has a smaller clearance to the ring 9 than the cylindrical lower part 25 of the container surrounded by the ring 9. In the following, the F i g. 6 to 9, which show an embodiment shown in FIG many items corresponds to the embodiment shown in Figs. About repetitions To avoid this, the device is therefore no longer discussed as a whole, but rather only with regard to the parts that are new here. This is done for corresponding parts, provided they are not larger have structural differences, the same reference numerals are used.

The adjustment part 106 in turn has a rod 15 which is connected to the ring 9 via tabs 16, 17 is. An arm 107 connects to the front of the rod 15, the end of which is above the beam 21 lies. An angled tab 108 is welded to the underside of the arm that holds the beam 21 reaches below. The arm 107 is fixed in relation to the beam by means of a pin 109, which forms part of a resilient member 111 connected to the arm 106. That from one A resilient member 111 formed by a piece of spring steel or spring steel wire has a horizontal portion 112, which via a bend 113 in a likewise substantially horizontally extending Part 114 passes over. The part 114 is provided with a U-shaped bent up, vertical part 115 and forms with its free end the pin 109. The part 112 is by means of a bolt 116 on the underside of the arm 107 attached. The recess corresponding to the holes 20 in the bar 21 is here as Long hole 176 is formed, and next to this long hole there is a recess in the upper side of the arm 107 175 is provided, which, if the pin 109 is not inserted into the holes 176, 20, to its up- • would serve.

In this embodiment, too, a support 38 is attached to the arm 32, on which both a Tension spring 41 and a leaf spring 46 are attached. The leaf spring has a slightly different shape than that shown in the previous exemplary embodiment and is with a bent end 132 provided. At this a guide and holding part 133 is attached, the one with a Stop 50 provided with a V-shaped recess

■ and has a guide cam 51 located at a distance therefrom. Furthermore, one end of the rope 54 is fastened to the holding part 133.

In the present exemplary embodiment, the cable 54 is guided over a guide roller 138 which can be rotated about an axis 139 enclosing an angle 140 of approximately 18 ° with the vertical. The axle 139 is attached to a support 141 welded to the top of the arm 107 and carries a plate 142 above the guide roller 138 , which is guided by a pin guided through the axle 139

143 is secured, and which forms the upper system for the guide roller 138 . A second axis is parallel to the first-mentioned axis 139 on the support 141

144 welded on, which also extends through the plate 142 . The axis 144 is surrounded by a bushing 145 between the support 141 and the plate 142 and also has a pin 146 above the plate 142 for holding the plate 142 .

The cam 148 , which can come into operative connection with the mounting part 133, is also attached to the arm 107 via a spring bar 149. The spring bar 149, which can also consist of spring steel wire, has two horizontal bar parts 150, 151 which are connected to one another by a curved bar part 152. The rod parts 150 and 151 enclose an angle of approximately 15 °, and the cam 148 is formed by the bent end of the rod part 150 . The spring bar 149 , like the resilient member 111, is also connected to the arm 107 by the bolt 116 . These two spring parts, the resilient member 111 and the spring bar 149 are made in one piece from a piece of spring steel in the present exemplary embodiment and are connected to one another by a curved part 153 which is clamped against the lower side of the arm 107 by the bolt 116. A transverse arm is also attached to the underside of the arm 107. On the one shown in FIG. 6 to the right of the arm 107 of this transverse arm, the cam 44 is attached, which cooperates with the adjustable stop 36 . On the opposite side, the transverse arm forms a guide surface 154 a, the front side of which lies in the immediate vicinity of the cam 148. With this guide surface 54a, the mounting part 133 can come into operative connection, which for this purpose has an inclined run-up surface 155 in the region of the stop 50.

The mode of operation of the adjusting device for opening and closing the openings 11 to 13 in the ring 9 by the slides 26 to 28 is also intended for the embodiment according to FIGS. 6 to 9 are discussed again, since the resilient support of the mounting part 133 and the cam 148 means that there are some deviations from the previously discussed embodiment according to FIGS. 1 to 5 are present. In the in F i g. 6, the openings 11 to 13 in the ring 9 are closed by the slides 26 to 28 . The cam 148 is in operative connection with the stop 50 and lies in its V-shaped recess. If the openings 11 to 13 are now to be opened, a tensile force is exerted on the cable 54, as a result of which the holding part 133 is displaced in the direction of the arrow 159. Here, the surface 160 of the V-shaped recess of the stop 50 moves along the cam 148 and ultimately releases it. As soon as the mounting part 133 is displaced so far that the cam 148 slides out of the V-shaped recess of the stop 50 , it moves slightly in the direction of arrow 161 as a result of its resilient guidance. The mounting part 133 deviates slightly in the opposite direction. If the tensile force on the cable 54 is now canceled, the holding part moves in the direction of the arrow 162 due to the force exerted by the spring 41 on the arm 32

ίο Bracket part 133 dennockenl48 with one side 163. Should now be done in the opposite way, starting from an open position, which is shown in FIG. 6 are reached, a tensile force is exerted on the cable 54 , by means of which the holding part 133 is pivoted in a direction opposite to the arrow 162. During this pivoting, the stop 50 comes on the one hand with its side

164 on the cam 148 and on the other hand with its slope 155 in contact with the guide 154 ^ 4 and is raised by contact with the guide 154 A to the height necessary for threading the cam 148 into the V-shaped recess of the stop 50. During the displacement of the mounting part 133 in the direction of the arrow 159 under the effect of the tensile force on the cable 54 , the cam 148 comes to the surface

165 of the guide cam 51 to the plant, so that the holding part 133 can not be moved further in the direction of arrow 159 . If the tensile force on the rope 54 is now canceled, the holding part 133 moves under the action of the spring 41 again in the direction of the arrow 162. Here, the cam enters the V-shaped recess of the stop 50, whereby the holding part and thus the adjusting part 32 in the in F i g. 6 is fixed position shown.

For the correct interaction of the cam 148 and the mounting part 133 , these two parts must be movable with respect to one another, both in and in the opposite direction of the arrow 162 . This mobility is used by the resilient arrangement of the cam 148, by means of which, despite the rigidity of the spring 46 , easy interaction of the mounting part 133 and the cam is ensured.

The resilient arrangement of the cam could also be achieved by other spring elements than those shown, for example by a leaf spring. To pivot the adjustment part 106 , the pin 109 is released by lifting the U-shaped spring section 115 in the direction of arrow 174 (FIG. 8) from its locking position, in which it engages in a hole 20 of the beam 21 , and can now, for example To facilitate the pivoting process, can be inserted into a recess 175 of the arm 107. The tongue 108 engaging under the bar 21 prevents the arm 107 from lifting off the bar 21 when the pin 109 is lifted and when a tensile force is exerted on the cable 54.

As the F i g. 6 and 7 show, the hole 176 in the arm 107 , which corresponds to the holes 20 in the beam 21 , is designed as an elongated hole or slot-shaped recess which is dimensioned so that the arm and thus also the rings 9 and 29 radially around the beam 21 by a certain amount Amount are shiftable. For this purpose, the elongated hole 176 and the angled tab 108 must be arranged so that they are coordinated with one another that the free distance

of the end 181 of the tab 108 adjoining the arm 107 from the facing side of the bellows 21 and the distance 177 between the radially inner boundary 178 of the elongated hole 176 and the ! facing side of the pin 109 are approximately the same. JDue to this possibility of movement of the rings 9 and in relation to the bar 21, the removal of the one from FIG. 2 visible container 4 facilitates, Because when it is removed it is tilted around a strut lying on its rear side, which causes its The cylindrical lower part 25 moves slightly in the direction of the beam 21.

Instead of the hole 176 in the arm 107, the holes 20 in the beam 1 can of course also be used Yes, elongated holes can be formed, whereby the same effect is achieved.

Claims (10)

Patent claims: 1. Apparatus for distributing material over a surface, with at least one A container having an outlet opening in which the opening can be opened by a closure member or is to be closed, which is adjustable by means of an adjusting device and in different Positions can be determined, the adjusting device having a cam and a cam interacting with this Having stop, characterized in that the stop (50) or the cam (48) or both parts (50, 48) only by a resilient connection (46) with a further part (31) of the adjustment device are connected. 2. Device according to claim 1, characterized in that the resilient connection (46) is tensioned when the cam (48) and the stop (50) are in contact with one another. 3. Apparatus according to claim 1 or 2, characterized in that the spring connection (46) consists of a leaf spring. 4. Device according to one of claims 1 to 3, characterized in that the with the Spring (46) connected locking member (26 to 28) with respect to the cam (48) supporting Adjusting part (14) is pivotable about an axis (24). 5. Device according to one of the preceding claims, characterized in that the Closure member (26 to 28) closes the discharge openings in the position in which the stop (50) and the cam (48) are in contact with each other. 6. Device according to one of the preceding claims, characterized in that with a rope (54) is coupled to the closure member (26 to 28) via the spring connection (46) in this way is that when tensile force is applied, cam (48) and stop (50) for mutual coupling and uncoupling are mutually displaceable. 7. Device according to one of the preceding claims, characterized in that the Cable (54) is guided around a guide roller (55) which is attached to the adjustment part (14), and that the axis of rotation of the guide roller deviates from the vertical by an angle of more than 5 °. 8. Apparatus according to claim 7, characterized in that the cam (148) by means of a Spring in the form of a rod (149) connected to the associated part of the adjusting device (106) is. 9. Apparatus according to claim 8, characterized in that the cam (148) by a bent end of the spring rod (149) is formed. 10. Apparatus according to claim 8 or 9, characterized in that the spring rod (149) is formed from two parts (150, 151) which have an angle of less than 90, preferably about 15 °. Considered publications:
German Patent Nos. 954112, 911556;
German Auslegeschrift No. 1062472;
U.S. Patent No. 2,091,432. For this purpose 2 sheets of drawings 709 717/49 12.67 © Bundesdruckerei Berlin