JPH057003U - Leveling device for leveling members - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the durability of the parts related to the turning rail by preventing the play of the turning rail. [Structure] The outer peripheral edge of the rotating roller 43C is tapered, and the portion of the rotating rail 40A that abuts on the rotary roller 43C is tapered according to the shape of the outer peripheral edge of the rotary roller 43C. In addition, each rotating roller 43C,
The coil springs 42b are configured to urge the respective coils outward. Therefore, due to the urging force of the coil spring 42b, the entire edge of each rotating roller 43C comes into close contact with the inner surface of the rotating rail 40A, so that rattling of the rotating rail 40A in the vertical and horizontal directions is minimized.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ground leveling height adjusting device for a ground leveling member that adjusts the ground leveling height of a ground leveling member to play a role of leveling.

[0002]

[Prior Art]

 A rotary beta is a working machine for a passenger tractor that has the same structure and operation as the cultivating part of a rotary cultivator. The rotary beta, which is mainly used for tillage, is also called a rotary or rotary tiller. Also, those mainly used for crushed soil are called rotary harrows, rotary hoes, speed harrows, etc.

FIG. 5 shows an example of the above-mentioned rotary, in which a rotary 30 is attached via a three-point link 20 of the tractor 10. The three-point link 20 is provided with a top link 21 and two lower links 22. The rotary 30 is provided with a top link connecting portion 31 connected to the top link 21 and a lower link connecting portion 32 connected to the lower link 22. An input shaft 33, which receives power from the PTO shaft 11 of the tractor 10 via a universal joint, a transmission shaft, or the like, is provided between the lower link connecting portions 32.

A transmission case 34 is provided on one side of the body of the rotary 30. A cultivating shaft 35 is mounted between a lower portion of the transmission case 34 and a lower portion of a support frame (not shown) provided on the other side of the body. A large number of plowing pawls 36 are attached to the plowing shaft 35. A cultivating rotor 37 is constituted by the cultivating shaft 35, a large number of cultivating claws 36, and the like. A rotary cover 38 and a rubber cover 39 are arranged above the cultivating rotor 37.

A support member 41 is attached to the upper portion of the rotary cover 38 as shown in FIG. A roller shaft 42 is attached to the support member 41. Rotating rollers 43 are rotatably and slidably attached to both ends of the roller shaft 42. The rotation rail 40 is slidably attached to the rotation roller 43. As a result, the rotary rail 40 can be rotated clockwise or counterclockwise.

A bracket 50 is attached to one end of the rotating rail 40. A flap (leveling member) 51 is rotatably attached to one end of the rotary rail 40. The end of the compression rod 52 is rotatably attached to the middle portion of the flap 51. The other end of the support rod 52 is slidably attached to the bracket 50.

A power cylinder 53 is attached to the bracket 50. Then, when the pushing force or the pulling force of the power cylinder 53 is transmitted to the bracket 50, the rotating rail 40 rotates clockwise or counterclockwise via the rotating roller 43.

As a result, when the rotating rail 40 rotates counterclockwise, the flap 51 is pulled up, so that the ground contact height of the flap (leveling member) 51 is increased. On the contrary, when the rotating rail 40 rotates clockwise, the flap 51 is pulled down, so that the ground contact height by the flap (land leveling member) 51 is lowered.

[0009]

[Problems to be solved by the device]

 However, in the above-described conventional rotary, as shown in FIG. 6, since the rotary rail 40 having a rectangular cross section is simply supported by the rotary roller 43, the machine body vibrates during work. The rotating rail 40 is loose in the vertical and horizontal directions. In this way, if the turning rail 40 is loose, an unreasonable force is applied to the support member 41 and the like, so there is a risk of damage to the parts related to the turning rail 40, and there is a problem in terms of durability. there were.

The present invention has been made in consideration of such a situation, and a ground leveling member capable of improving the durability of parts related to the turning rail by preventing looseness of the turning rail. An object is to provide a turning device.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a leveling device for a leveling member for adjusting the leveling height of a leveling member, comprising: a supporting member for fixedly supporting a roller shaft; and both end portions of the roller shaft. The rotary rollers are slidably fitted to each other and each of the outer peripheral edge portions are cut into a taper shape, and the shape is configured to cover these rotary rollers, and both sides match the taper shape of the rotary roller. A rotary rail for adjusting the ground leveling height of the ground leveling member, and a biasing means for biasing the rotary rollers fitted to both ends of the roller shaft toward the inner side surface of the rotary rail. Is characterized by.

[0012]

[Action]

 In the ground leveling height adjusting device of the present invention, the outer peripheral edge of the rotary roller is tapered so that both sides of the rotary rail are aligned with the taper shape of the rotary roller, and each rotary roller is biased by the biasing means. The bias is applied to the inner side of the rotating rail. As a result, when the rotating rail rotates, the rotational force acts on the rotating roller as a force against the biasing force, and the force that prevents the rotating roller from being prevented from rotating is avoided. Rotation is performed smoothly.

On the other hand, when the ground leveling of the ground leveling member is not adjusted by the turning rail, that is, when the turning rail does not turn, the turning force by the turning rail is not applied to the turning roller, and the biasing means is used. Only the biasing force is applied to the rotating roller. As a result, the entire outer peripheral edge of the rotating roller abuts the inner surface of the rotating rail, so that play in the vertical and horizontal directions of the rotating rail is minimized.

[0014]

【Example】

 Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same parts as those in FIG. 6 will be assigned the same reference numerals and overlapping explanations will be omitted.

FIG. 1 shows an embodiment of a ground leveling height adjusting device for a ground leveling member according to the present invention. As shown in the figure, a support member 41 is attached to the rotary cover 38. A roller shaft 42 is attached to the support member 41. Rotation rollers 43A are attached to both ends of the roller shaft 42 so as to be rotatable and slidable. An adjusting shim (liner) 60 is interposed between the rotating roller 43A and the support member 41. As a result, the frictional force between the rotating roller 43A and the support member 41 is reduced.

The pressing force of the edge of the rotary roller 43A against the inner surface of the rotary rail 40A is determined by the thickness of the selected adjustment shim (liner) 60. Further, when the rotation roller 43A is brought into close contact with the rotation rail 40A, the rotation of the rotation roller 43A is hindered, so that the rotation of the rotation rail 40A cannot be performed smoothly. Therefore, when the adjustment shim (liner) 60 is selected, it is desirable that the thickness be such that the gap between the lower edge 43a of the rotary roller 43A and the contact portion of the rotary rail 40A is minimized.

The outer peripheral edge of the rotary roller 43A is cut into a taper shape. A rotary rail 40A is slidably attached to the rotary roller 43A. The portion of the rotating rail 40A that abuts the rotating roller 43A is tapered according to the shape of the edge of the rotating roller 43A.

The ground leveling height adjusting device for the ground leveling member thus configured operates as follows. First, when the turning rail 40A is turned to adjust the leveling height of the leveling member, since the upper and lower edge portions 43b and 43a of the rotating roller 43A are tapered, the turning force is generated. Acts as a pressing force to the inside. Therefore, the rotary rollers 43A are pressed inward, and the upper end surfaces of the respective rotary rollers 43A come into contact with the upper end inner wall of the rotary rail 40A.

At this time, each adjusting shim (liner) 60 interposed between the roller 43A and the support member 41 is pressed, and the pressed amount is used as the sliding amount of each rotating roller 43A. As a result, the upper and lower edge portions 43b and 43a of the rotating roller 43A are separated from the inner surface of the side portion of the rotating rail 40A. Therefore, the force that prevents the rotation of each rotation roller 43A is avoided, so that the rotation rail 40A is smoothly rotated. At this time, since the adjusting shim (liner) 60 is interposed between the rotating roller 43A and the supporting member 41, the frictional force between the rotating roller 43A and the supporting member 41 is reduced.

On the other hand, when the ground leveling adjustment of the ground leveling member by the rotary rail 40A is not performed, that is, when the rotary rail 40A does not rotate, the turning force by the rotary rail 40A is applied to each rotary roller 43A. Absent. Therefore, each adjusting shim (liner) 60 interposed between the rotating roller 43A and the supporting member 41 returns to its original thickness from the compressed state, whereby each rotating roller 43A is pushed outward. As a result, the entire outer peripheral edge portion of each rotating roller 43A contacts the inner side surface of the rotating rail 40A, so that the gap between the outer peripheral edge portion of the rotating roller 43A and the inner side surface of the rotating rail 40A becomes as small as possible, and The play in the vertical and horizontal directions of the rail 40A is stopped to a minimum.

Therefore, even when the machine body vibrates during the work, rattling in the upper, lower, left and right directions of the rotating rail 40A is suppressed to a minimum, so that an unreasonable force may be applied to the support member 41 and the like. Absent. As a result, the durability of the parts related to the turning rail 40A is improved.

As described above, in this embodiment, the outer peripheral edge portion of the rotary roller 43A is tapered, and the portion of the rotary rail 40A that abuts the rotary roller 43A is formed into the outer peripheral edge portion of the rotary roller 43A. The shape is tapered. Further, an adjusting shim (liner) 60 having a predetermined thickness is interposed between the rotating roller 43A and the supporting member 41.

Therefore, the rotating roller 43A is pushed outward by the adjusting shim (liner) 60 having a predetermined thickness along the axial direction of the rotating rail 40A, so that the outer peripheral portion of the rotating roller 43A is substantially entirely covered. Is in contact with the inner surface of the rotating rail 40A, the gap between the outer peripheral edge of the rotating roller 43A and the inner surface of the rotating rail 40A is minimized. For this reason, even if the machine body vibrates during the work, rattling in the upper, lower, left and right directions of the rotary rail 40A is suppressed to a minimum, so that an unreasonable force is not applied to the support member 41 and the like.

As a result, it is possible to prevent damage to the components related to the rotary rail 40A, so that the problem in terms of durability is solved. FIG. 2 shows another embodiment in which the configuration of the ground leveling height adjusting device for the ground leveling member in FIG. 1 is changed. In the drawings described below, the same parts as those in FIG. 1 are designated by the same reference numerals, and the duplicated description will be omitted.

As shown in the figure, a support member 41 is attached to the rotary cover 38. A roller shaft 42A is attached to the support member 41. A hollow portion 42a is provided in the roller shaft 42A. A coil spring 42b is inserted in the hollow portion 42a. Recesses 43a of the rotating roller 43B are slidably fitted to both ends of the roller shaft 42A. Each rotating roller 43B is biased outward by the coil spring 42b. The edge of the rotating roller 43B is cut in a taper shape. A rotary rail 40A is slidably attached to the rotary roller 43B.

In the ground leveling height adjusting device for a ground leveling member having such a configuration, when the turning rail 40A slides, each rotary roller 43B moves inward against the biasing force of the coil spring 42b. For this reason, the force that impedes the rotation of each rotation roller 43B is avoided, and the rotation of the rotation rail 40A is smoothly performed. At this time, the frictional force between the support member 41 and the rotating roller 43B is reduced by the biasing force of the coil spring 42b acting on each rotating roller 43B.

When the rotating rail 40A does not slide, only the biasing force of the coil spring 42b acts on each rotating roller 43B. Therefore, the rotary rollers 43B are pushed outward, and the entire side end surfaces of the rotary rollers 43B come into contact with the inner surface of the rotary rail 40. As a result, the contact between the side end surface and the upper end surface of each rotating roller 43B prevents rattling due to lateral vibration when the machine body vibrates during work.

As described above, in this embodiment, the rotary rollers 43B are slidably fitted to the roller shaft 42A at both ends of the roller shaft 42A, and the coil springs 42b inserted inside the roller shaft 42A are used. Each rotating roller 43B is biased to the outside.

Therefore, when the sliding operation of the rotating rail 40A is not performed, each rotating roller 43B is urged outward by the urging force of the coil spring 42b, and the side end surface of each rotating roller 43B rotates. It contacts the inner surface of the moving rail 40A. At this time, the upper end surface of each rotating roller 43B is also in contact with the inner surface of the rotating rail 40A.

Therefore, due to the contact between the side end surface and the upper end surface of each rotating roller 43B, rattling due to lateral vibration when the machine body vibrates during work is prevented. 3 shows another embodiment in which the configuration of the ground leveling height adjusting device for the ground leveling member of FIG. 2 is changed. As shown in FIG. The roller shaft 42A is fixed. Recesses 43a of the rotating roller 43C are slidably fitted to both ends of the roller shaft 42A.

A coil spring 42b is inserted into the hollow portion 42a of the roller shaft 42A. Then, each rotating roller 43C is biased outward by a coil spring 42b. The outer peripheral edge of each rotating roller 43C is cut into a taper shape. A rotary rail 40A is slidably attached to the rotary roller 43C. The portion of the rotating rail 40A that comes into contact with the rotating roller 43C is tapered to match the shape of the outer peripheral edge of the rotating roller 43C.

In the ground leveling height adjusting device for a ground leveling member having such a configuration, when the sliding force of the rotary rail 40A is applied to the outer peripheral edge of the rotary roller 43C when the rotary rail 40A slides, the rotary roller 40A rotates. 43C is pressed inward along the axial direction of the roller shaft 42A against the biasing force of the coil spring 42b.

As a result, the upper end surface of each rotating roller 43C abuts on the inner surface of the rotating rail 40A, and a minimum required amount is provided between the lower edge portion 43a of the rotating roller 43C and the inner surface of the rotating rail 40A. Since the gap is formed, the rotation impeding force on the rotating roller 43C does not act. Therefore, the rotation rail 40A slides smoothly. When the rotating rail 40A is not slid, the rotating rollers 43C are urged outward by the urging force of the coil springs 42b. As a result, the entire edge of each rotating roller 43C comes into close contact with the inner surface of the rotating rail 40A, so that even if the machine body vibrates during work, the rattling of the rotating rail 40A in the vertical and horizontal directions is minimized. You can stop it.

As described above, in this embodiment, the outer peripheral edge of the rotary roller 43C is tapered, and the portion of the rotary rail 40A that abuts on the rotary roller 43C is shaped like the outer peripheral edge of the rotary roller 43C. The shape is tapered. Further, each rotating roller 43C is biased outward by the coil spring 42b. Therefore, the biasing force of the coil spring 42b causes the entire edge portion of each rotating roller 43C to be in close contact with the inner surface of the rotating rail 40A. It is kept to a minimum compared to the high adjuster.

FIG. 4 shows another embodiment in which the configuration of the roller shaft 42A shown in FIGS. 2 and 3 is changed, and concave grooves 42c and 42c are formed instead of the hollow portion 42a of the roller shaft 42A. It is being touched. Coil springs 42e and 42e are inserted and fitted in the recessed grooves 42c and 42c, respectively.

In the leveling height adjusting device for a leveling member having such a configuration, when the turning rail 40A slides, the rotating roller 43C is moved inward along the axial direction of the roller shaft 42B in the same manner as above. As a result, the rotation rail 40A slides smoothly. When the rotating rail 40A does not slide, the rotating rollers 43C are urged outward by the urging force of the coil springs 42e. As a result, the entire edge of each rotary roller 43C comes into close contact with the inner surface of the rotary rail 40A, so that rattling of the rotary rail 40A in the vertical and horizontal directions is minimized.

Further, since the coil springs 42e are individually provided in the concave grooves 42c of the roller shaft 42B, even if an external force is applied to the rotating roller 43C on the right side in the figure, the external force is not applied. It does not affect the rotating roller 43C on the left side in the figure. Therefore, the rotary rail 40A is kept on the support shaft 41 in a well-balanced manner.

As described above, in this embodiment, the edge of the rotary roller 43C is tapered, and the portion of the rotary rail 40A that abuts the rotary roller 43C is shaped like the edge of the rotary roller 43C. It was made into a tapered shape in accordance with. In addition, each rotating roller 43C is biased outward by the coil spring 42e that is individually inserted and attached.

Therefore, due to the urging force of the coil spring 42e, the entire edge of each rotating roller 43C comes into close contact with the inner surface of the rotating rail 40A, so that the rattling of the rotating rail 40A in the up, down, left, and right directions is minimized. be able to. Further, the groove 42c, 42c is provided on the roller shaft 42B, and the coil spring 42e is individually inserted into each groove 42c. Therefore, for example, even when a lateral force is applied to the rotating roller 43C side on the right side in the figure via the turning rail 40A, the lateral force does not act on the rotating roller 43C side on the left side in the figure, so that the support shaft It is possible to keep the turning rail 40A on the 41 in good balance.

In each of the above embodiments, the case where the roller shafts 42, 42A, 42B are arranged in the lateral direction has been described, but the present invention is not limited to this example, and the ground leveling adjusting device for the ground leveling member of the present invention is This may be applied when the roller shafts 42, 42A, 42B are arranged in the vertical direction.

[0041]

[Effect of the device]

 As described above, according to the ground leveling height adjusting device for a ground leveling member of the present invention, the outer peripheral edge of the rotary roller is cut into a taper shape, and both sides of the rotary rail are matched with the taper shape of the rotary roller. At the same time, each rotating roller is urged toward the inner side of the rotating rail by the urging means. As a result, when the rotating rail rotates, the rotating force acts on the rotating roller as a force against the urging force, and the force that prevents the rotating roller from interfering with the rotating roller is avoided. Rotation is performed smoothly. On the other hand, when the ground leveling of the ground leveling member is not adjusted by the turning rail, that is, when the turning rail is not turned, the turning force by the turning rail is not applied to the rotating roller and only the biasing force by the biasing means is applied. Joins the rotating roller. As a result, the entire outer peripheral edge portion of the rotating roller contacts the inner side surface of the rotating rail, so that the play of the rotating rail in the vertical and horizontal directions is minimized. Therefore, the play of the turning rail is prevented, and the durability of the parts relating to the turning rail can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a ground leveling height adjusting device for a ground leveling member according to the present invention.

FIG. 2 is a sectional view showing another embodiment in which the configuration of the ground leveling height adjusting device for the ground leveling member in FIG. 1 is changed.

FIG. 3 is a cross-sectional view showing another embodiment in which the configuration of the ground leveling height adjusting device for the ground leveling member in FIG. 2 is changed.

FIG. 4 is a sectional view showing another embodiment in which the configuration of the roller shaft of FIG. 3 is changed.

FIG. 5 is a side view showing an example of a conventional rotary.

FIG. 6 is a cross-sectional view showing a leveling height adjusting device for the leveling member of FIG.

[Explanation of symbols]

 38 Rotary Cover 40, 40A Rotating Rail 41 Supporting Member 42b, 42e Coil Spring 42, 42A Roller Shaft 43A, 43B, 43C Rotating Roller 60 Adjustment Shim (Liner)

Claims (1)

Claims for utility model registration: 1. A ground leveling height adjusting device for a ground leveling member for adjusting the ground leveling height of a ground leveling member, and a support member for fixedly supporting a roller shaft, and both end portions of the roller shaft. And a rotating roller which is slidably fitted to the rotating roller and whose outer peripheral edge portions are cut in a tapered shape, and a shape which covers these rotating rollers, and both side portions are fitted to the tapered shape of the rotating roller. A rotary rail that adjusts the ground leveling height of the ground leveling member; and a biasing unit that biases the rotary rollers fitted to both ends of the roller shaft toward the inner side surface of the rotary rail. A leveling height adjusting device for the characteristic leveling member.