JP2018000193A - Jig for rotation regulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for rotation regulation capable of regulating rotation of a tillage claw shaft in a cultivator.SOLUTION: There is provided a jig for regulating rotation of a tillage claw shaft 10 in a cultivator. The jig 1 for rotation regulation has a first latching tool 2 projecting on a peripheral side face of the tillage claw shaft 10, and latched detachably on a tillage claw holder 11 for fixing a tillage claw 12, an operation rod 3 fixed to the first latching tool 2, and a second latching tool 4 provided slidably in the axial direction of the operation rod 3, and latched on the marginal part 15a of a rear cover 15 for covering the tillage claw shaft 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a retrofit-type jig for restricting rotation of a cultivating claw shaft in a cultivator.

In general, since the cultivating claw of the cultivator is easily worn by its use, it is necessary to periodically replace the cultivating claw according to the degree of wear of the cultivating claw. Usually, a large number of tilling claws are fixed on the peripheral side surface of the tilling claw shaft at every desired interval and every desired angle.
Each cultivating claw is individually fixed to a cultivating claw holder (bracket) that protrudes on the peripheral side surface of the cultivating claw shaft using bolts and nuts. Therefore, when exchanging a tilling nail, it was necessary to remove the nut arrange | positioned on a tilling nail holder (bracket) using hand tools, such as a spanner wrench.
When removing the nut that fixes the cultivating claw, operating a hand tool such as a spanner wrench causes torque to act on the cultivating claw shaft, which may cause the cultivating claw shaft to rotate unintentionally. In this case, the cultivating claw rotates with unintentional rotation of the cultivating claw shaft, and the cultivating claw hits the operator and may be injured, which is extremely dangerous.
Generally, it is recommended to turn on the cultivating gear (PTO; Power take-off) when replacing the cultivating claw, but the cultivating claw shaft can be rotated even if the cultivating gear is turned on. It was not possible to completely regulate it.
In addition, since the cultivating claws are mounted on the peripheral side surface of the cultivating claw shaft at each desired angle, the exchanging work of the cultivating claw is performed by replacing the cultivating claw and by changing the cultivating claw shaft by the desired angle. It is necessary to repeat the rotating operation. In this case, when the cultivator is large, it is necessary for the operator to reciprocate between the cultivating gear arranged in the cockpit of the cultivator and the cultivating claw shaft many times, which is very complicated.

  Although no prior art documents having the same problems to be solved as the present invention have been found at present, the jigs used by directly or indirectly hanging on the tilling claw shaft in the related technical field are as shown below. What is known.

Utility Model Registration No. 3189599 Japanese Utility Model Publication No. 47-14418

  The device disclosed in Patent Document 1 is for removing mud adhering to the back side of the cover of the tilling claw shaft, and for restricting the rotation of the tilling claw shaft as intended by the present invention. Is not.

  The device disclosed in Patent Document 2 is a jig for detachably fixing the drum rotor to the tilling claw shaft. The device disclosed in Patent Document 2 also rotates the tilling claw shaft. It is not for regulation.

  The present invention has been made in response to such a conventional situation, and is easy to attach and detach, and for rotation control that can reliably control unintentional rotation of the cultivating claw shaft at the time of exchanging cultivating claw. To provide a jig.

In order to solve the above-mentioned problems, the rotation restricting jig according to the first invention is a jig for restricting the rotation of the cultivating claw shaft of the cultivator, and projects on the peripheral side surface of the cultivating claw shaft. A first hook that is detachably hooked to a cultivating claw holder that fixes the cultivating claw, an operating bar fixed to the first hook, and an axis of the operating bar And a second latching tool that is provided so as to be slidable in the direction and is latched on the edge of the rear cover that covers the tilling claw shaft.
1st invention of the said structure WHEREIN: A 1st latching tool has the effect | action of hold | maintaining the tilling nail holder (bracket) protrudingly provided on the surrounding side surface of a tilling nail | claw axis | shaft. In addition, the operation rod fixed to the first hook has an effect of enabling the first hook to be operated indirectly. Furthermore, the second hook has an effect of fixing the end of the operation rod on the side where the first hook is not fixed to the edge of the rear cover of the cultivator.
And since the 2nd latching tool is latched (fixed) to the edge part of a rear cover, it becomes impossible to change the distance of a 1st latching tool and a 2nd latching tool. As a result, the rotation operation of the cultivating claw shaft is physically hindered and the rotation of the cultivating claw shaft is restricted.

The jig for restricting rotation according to a second aspect of the present invention is the jig according to the first aspect, wherein the first hook is formed on the holding portion provided so as to surround the outer surface of the tilling claw holder, and the holding portion. A nut for fixing the cultivating claw to the cultivating claw holder from the notch.
The second invention having the above configuration has the same action as the first invention. Moreover, the holding | maintenance part in a 1st latch has an effect | action of hold | maintaining a tilling nail holder. Moreover, the notch part formed in this holding | maintenance part has the effect | action of making a nut which fixes a tilling nail | claw to a tilling nail holder bare. And, since the nut is always bare from the holding portion, the nut is loosened or tightened with a hand tool or the like while the first hook (holding portion) is still attached to the tilling claw holder. It has the effect of making it possible to perform.
Further, according to the second invention, the holding portion can be arranged on the tilling nail holder while avoiding the nut arranged on the outer surface of the tilling nail holder. Adhesion is improved. Thereby, it has the effect | action of improving the holding effect of the tilling nail holder by a 1st latch.

A rotation restricting jig according to a third aspect of the present invention is the first or second aspect of the present invention, and includes a ring body or a cylinder fixed to the second hook, and the ring body or the cylinder is hollow. An operating rod is inserted into the section.
The third invention having the above-described configuration has the same function as the first or second invention. Further, the third invention specifically specifies the slide structure of the second latching tool in the first or second invention. That is, in the third invention, the second latching tool includes an annular body or a cylinder, and the operation rod is inserted into a hollow portion of the annular body or the cylinder, so that the second in the axial direction of the operation rod. It is possible to slide the latch.

A rotation restricting jig according to a fourth aspect of the invention is any one of the first to third aspects of the invention, and has a slide restricting member for restricting the slide of the second latching tool. It is.
The fourth invention having the above-described configuration has the same action as any of the first to third inventions.
Furthermore, 4th invention has the effect | action of making it possible to fix or hold | maintain a 2nd latching tool temporarily in the desired position on an operating rod by having a slide control member.

In the fourth invention, the rotation restricting jig according to the fifth invention is a band body made of a string or an elastic material, and the operating rod has a string or a band body on its peripheral side surface. A protrusion or a loop for latching is provided.
The fifth invention with the above configuration specifically specifies the slide regulating member in the fourth invention. Therefore, in addition to the same operation as that of the fourth invention, the fifth invention includes a string or a band body as a slide restricting member, and a protrusion or a projection for hooking the string or band body on the operation rod. By providing the loop, it has a simple structure and has an effect of reliably regulating the slide of the second latch 4 while facilitating its handling.

According to a sixth aspect of the present invention, there is provided the rotation restricting jig according to the fourth aspect, wherein the slide restricting member is a non-slip material pressed against the outer surface of the operating rod.
The sixth invention with the above configuration specifically specifies the slide restricting member of the second latching tool in the fourth invention. Therefore, in addition to the same action as the fourth invention, the sixth invention includes a non-slip material pressed against the outer surface of the operating rod, thereby restricting the slide of the second hooking tool 4. It has the effect | action of making the form of 6th invention compact.

According to a seventh invention, in the first or second invention, the second latch has a plate body bent in a hook shape and a screw provided while penetrating the plate body in the thickness direction. The plate body has a pair of insertion holes for allowing the operation rod to be inserted through the plate body, and a screw hole for screwing a screw provided between the pair of insertion holes in the plate body. It is characterized by having.
In the seventh invention having the above-described configuration, in addition to the same action as that of the first or second invention, the plate body bent in a hook shape has a rear cover whose end covers the tilling claw shaft. It acts as a second latching tool by being latched on the edge of the.
Further, by inserting the operation rod into a pair of insertion holes formed in the hook-like portion of the plate body, the second latching tool can slide in the axial direction of the operation rod.
Further, the plate body is provided with a screw hole between the pair of insertion holes, and the screw is inserted into the screw hole so that the end of the screw led out from the screw hole is connected to the peripheral side surface of the operation rod. And the sliding of the plate (first latch) on the operation rod is regulated.

In an eighth aspect based on the seventh aspect, the screw has a handle on its head.
In the eighth invention having the above-described structure, in addition to the same action as that of the seventh invention, the screw has a handle on its head, so that the operability when the screw is rotated about its axial direction as the base axis is provided. It has the effect | action of improving.

According to the first invention as described above, the rotation of the tilling pawl shaft can be reliably regulated regardless of whether or not the tilling gear is turned ON / OFF.
According to the first invention, after the rotation restricting jig is installed between the tilling claw shaft and the rear cover, it is necessary to remove the nut that fixes the tilling claw to the tilling claw shaft. Even when a large torque is applied, the tilling claw shaft does not rotate unexpectedly against the will of the operator. As a result, the operator can safely perform the replacement work of the tilling claw.
In addition, since the attaching and detaching work of the rotation restricting jig according to the first invention can be performed beside the tilling claw shaft, the operator can restrict the rotation of the tilling claw shaft and release it. There is no need to reciprocate between the operating portion of the cultivating gear and the cultivating claw shaft. As a result, the exchanging work of the tilling claw can be performed efficiently.

According to the second invention, in addition to the same effects as in the first invention, the holder constituting the first latching device is cultivated while avoiding the nuts arranged on the outer surface of the cultivating claw holder. Can be fitted to the nail holder.
In this case, not only can the first latching tool be easily attached to and detached from the tilling claw holder, but also the adhesion between the tilling claw holder and the first latching tool holder can be improved.
As a result, even when a torque that rotates the cultivating claw shaft with respect to the cultivating claw shaft is applied at the time of exchanging the cultivating claw, the rotation of the cultivating claw shaft is retained by the holder (first latch). ) Can be reliably regulated.
Further, according to the second invention, the operation of loosening or tightening the nut disposed on the outer surface of the tilling claw holder while the holder of the first hook is mounted on the tilling claw holder. It can be performed. Thus, according to 2nd invention, the 1st latching tool does not become the hindrance of exchange of a tilling nail.
Therefore, according to the second aspect of the present invention, it is possible to provide a rotation restricting jig with high reliability during use without hindering the replacement work of the tilling claw.

According to the third invention, in addition to the same effect as the first or second invention described above, the slide structure of the second hooking tool on the operation rod can be simplified.
According to the third aspect of the present invention, it is possible to manufacture and provide a rotation restricting jig with good operability and high reliability at low cost.

According to the fourth invention, in addition to the same effects as those of the first to third inventions, the second latching is provided at a desired position on the operating rod as necessary by providing the slide restricting member. The tool can be fixed or held.
Even if such a slide restricting member is not provided, the rotation restricting jig according to the present invention can reliably restrict the rotation of the tilling claw shaft, but the fourth invention is a slide restricting member. By providing this, it is possible to prevent the second latch from being unintentionally detached from the operating rod and the rear cover. Thereby, at the time of use of 4th invention, the situation which a 2nd latching tool remove | deviates from a control rod or a rear cover unintentionally, a tilling nail | claw axis | shaft rotates, and an operator is injured occurs. Risk can be reduced.

5th invention specifies the form of the slide control member in 4th invention concretely, and has the same effect as 4th invention.
In the fifth invention, the entire structure of the rotation restricting jig can be simplified by using the slide restricting member as a string or a band. As a result, the effect of reducing the manufacturing cost of the rotation restricting jig according to the fifth invention is also exhibited.

6th invention also specifies the slide control member in 4th invention concretely, and has the same effect as 4th invention.
In the sixth aspect of the invention, the second latch 4 is fixed or held at a desired position on the operation rod by providing a non-slip material pressed against the outer surface of the operation rod as the slide restricting member. The outer shape of the rotation restricting jig according to the sixth invention can be made simple and compact.
Therefore, according to the sixth aspect of the invention, it is possible to manufacture and provide a highly functional and compact rotation restricting jig.

7th invention specifies the form of the 1st latching tool and its slide control member in 1st or 2nd invention concretely.
According to such a seventh invention, the first latching tool is freely slid on the operation rod, and the seventh invention is fixed to a desired position on the operation rod using the screw. be able to.
Furthermore, according to the seventh invention, the first latching device can be constituted by a folded plate body having a pair of insertion holes and screw holes, so that the structure can be extremely simplified.
Thereby, it is possible to improve the productivity of the first hook and the slide restricting structure thereof, and to reduce the manufacturing cost.
As a result, the seventh invention can be efficiently produced and provided at a low cost.

In the eighth invention, in addition to the same action as that of the seventh invention, a handle is provided on the head of the screw, so that the operation of rotating the screw around its central axis can be performed without using a tool. It becomes possible to do in.
That is, since it is not necessary to use a tool for operating the screw, the operability of the eighth invention can be greatly improved.

It is a conceptual diagram of the jig | tool for rotation control which concerns on embodiment of this invention. It is a use condition figure of the jig for rotation control concerning an embodiment of the invention. It is a partial conceptual diagram which shows a mode that the 1st latch of the jig | tool for rotation control which concerns on embodiment of this invention was latched to the tilling nail holder. It is an axial direction sectional view showing a modification of a slide restricting member of a rotation restricting jig concerning an embodiment of the invention. (A) It is vertical sectional drawing with respect to the axial direction which shows the other modification of the slide control member of the jig | tool for rotation control which concerns on embodiment of this invention, (b) By the slide control member which concerns on another modification It is a vertical sectional view to the direction of an axis showing the state where the slide of a cylinder is controlled. (A) It is a perspective view of the rotation control jig | tool which concerns on another modification of this invention, (b) It is a side view of the rotation control jig | tool. It is a perspective view of the 1st latching tool in the jig | tool for rotation control which concerns on another modification of this invention. (A) It is a perspective view of the 2nd latching tool except the screw in the rotation control jig | tool which concerns on another modification of this invention, (b) The 2nd hook in the rotation control jig | tool It is a side view of a stopper, (c) It is a side view explaining the use condition of the 2nd stopper in the jig | tool for rotation control.

A rotation restricting jig according to an embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 1 is a conceptual diagram of a rotation restricting jig according to the embodiment of the present invention, and FIG. 2 is a use state diagram of the rotation restricting jig according to the embodiment of the present invention. FIG. 3 is a partial conceptual view showing a state in which the first hook of the rotation restricting jig according to the embodiment of the present invention is hooked on the tilling claw holder.
First, the basic structure of the rotation restricting jig 1 according to the present embodiment will be described in detail with reference to FIGS.
As shown in FIG. 2, the rotation restricting jig 1 according to the present embodiment is used by being hung between a cultivating claw shaft 10 of a cultivator and a rear cover 15 covering the cultivating claw shaft 10. It is what
As shown in FIGS. 1 and 2, the rotation restricting jig 1 according to this embodiment is attached to a tilling claw holder 11 (bracket) that protrudes on the peripheral side surface of the tilling claw shaft 10. A first hook 2 that is detachably hooked, an operation bar 3 that is integrally fixed to the first hook 2, and an slidable in the axial direction of the operation bar 3. The second cover 4 is configured to be hooked to the edge 15a of the rear cover 15.

According to the rotation restricting jig 1 according to the present embodiment as described above, an arbitrary cultivating claw holder 11 protruding on the peripheral side surface of the cultivating claw shaft 10 of the cultivator, and the cultivating claw holder The edge 15a of the rear cover 15 that is the shortest distance from 11 is integrally connected via the operation rod 3, and the distance between the arbitrary tilling claw holder 11 and the edge 15a of the rear cover 15 is made unchanged. be able to. Thereby, it can control suitably that rotation jig 1 concerning this embodiment rotates about the central axis as a base.
That is, according to the rotation restricting jig 1 according to the present embodiment, the tiller is detachably attached to the tilling claw holder 11 protruding from the tilling claw shaft 10 by the bolt 13a and the nut 13b. When the operator tries to remove the claw 12 from the tilling claw holder 11, when the torque is applied to the tilling claw shaft 10, the tilling claw shaft 10 rotates against the operator's will. Can be prevented.
On the other hand, when the rotation restricting jig 1 according to the present embodiment is not used, plowing is performed by the torque applied by the operator to the tilling claw shaft 10 when the tilling claw 12 is replaced. The claw shaft 10 rotates unexpectedly, and the cultivating claw 12 rotates along with this, and there is a possibility that the operator may be injured by the rotated cultivating claw 12, which is extremely dangerous. . Therefore, such a situation can be reliably avoided by using the rotation restricting jig 1 according to the present embodiment.
Moreover, the effect by using the rotation control jig | tool 1 which concerns on this Embodiment is turning on the cultivation gear (PTO) of a cultivator and restricting rotation of the cultivation nail | claw axis | shaft 10 like this. The cultivating claw shaft 10 is not simply made difficult to rotate, but the cultivating claw shaft 10 is made completely unrotatable. For this reason, according to the jig | tool 1 for rotation control which concerns on this Embodiment, the safety | security of the operator at the time of replacement | exchange of the tilling nail | claw 12 can be improved significantly.

Further, in the rotation restricting jig 1 according to the present embodiment, the rotation restriction according to the present embodiment with respect to the rear cover 15 is provided by slidably providing the second hook 4 on the operation rod 3. The jig 1 can be easily attached and detached.
That is, in the rotation restricting jig 1 according to the present embodiment, the second hook 4 is slidably provided on the operation rod 3, so that the first hook is placed on the tilling claw holder 11. After mounting the stopper 2, the second stopper 4 can be hooked to the edge 15 a of the rear cover 15 simply by sliding the second stopper 4 on the operation rod 3.
Further, when removing the rotation restricting jig 1 according to the present embodiment, after removing the second hook 4 that is hooked on the edge 15 a of the rear cover 15, the tilling of the tilling claw shaft 10 is removed. What is necessary is just to remove the 1st latching tool 2 from the nail holder 11.
That is, it is possible to complete the attaching or detaching operation of the rotation restricting jig 1 to the tilling claw shaft 10 (cultivating claw holder 11) and the rear cover 15 by an extremely simple operation.
Note that the structure for enabling the second latching tool 4 to slide in the axial direction of the operation rod 3 does not have to be specified as illustrated, and the latching tool 4 is slid on the operation rod 3. Any structure is possible as long as it can be achieved.

Next, the rotation regulating jig 1 according to the present embodiment will be described in more detail with reference to FIGS. 1 to 3.
As shown in FIGS. 1 to 3, the first latch 2 in the rotation restricting jig 1 according to the present embodiment is provided with a holding portion 2 a that surrounds the outer surface of the tilling claw holder 11. And a notch 2b formed in the holding part 2a, and a nut 13b arranged on the peripheral side surface of the tilling claw holder 11 may be exposed from the notch 2b.
In this case, when the first hook 2 is hooked on the peripheral side surface of the tilling claw holder 11, the holding portion 2 a can be brought into close contact with the peripheral side surface of the tilling claw holder 11. The retaining effect of the cultivating claw holder 11 by the hook 2 can be reliably exhibited.
Further, since the notch 2b is formed in the holding part 2a, when the first hook 2 is hooked on the tilling claw holder 11 to which the tilling claw 12 is attached, the notch is cut. The tilling claw 12 and the tilling claw holder 11 can be taken in and out of the hollow part of the holding part 2a from 2b. Thereby, the attachment / detachment operation | work of the 1st latching tool 2 (holding | maintenance part 2a) to the surrounding side surface of the tilling nail holder 11 can be performed smoothly.
Furthermore, according to the rotation restricting jig 1 having the first hook 2 as described above, when the holding portion 2 a is hooked on the tilling claw holder 11, the circumferential side surface of the tilling claw holder 11 The nut 13b arranged on the top can be bare from the cutout portion 2b formed in the holding portion 2a (see FIGS. 2 and 3). For this reason, the nut 13b bare from the notch 2b is loosened or tightened with a hand tool or the like while the first hook 2 is hooked on the tilling claw holder 11. be able to.
That is, the exchanging work of the tilling claw 12 can be performed while the rotation restricting jig 1 having the first hook 2 as described above is hooked on the tilling claw shaft 10.
Usually, in the tilling claw holder 11, the bolt 13a is provided penetrating the tilling claw holder 11 in the thickness direction. For this reason, when using the jig | tool 1 for rotation control which concerns on this Embodiment, in order to extract the volt | bolt 13a which fixes the tilling nail | claw 12 from the tilling nail holder 11, it is 1st from the tilling nail holder 11 once. It is necessary to remove the hook 2.
Further, when this operation is complicated, it is formed in the first latch 2 to attach / detach the bolt 13a to / from the cultivating claw holder 11 on the holding portion 2a at a position facing the notch portion 2b. Another notch portion (second notch portion; not shown) may be provided so that the hexagonal hole 20 (see FIG. 2) can be exposed at all times.

In general, the cultivating claw 12 uses a bolt 13a, a nut 13b, and, if necessary, a washer 14 on a cultivating claw holder 11 (bracket) projecting on the peripheral side surface of the cultivating claw shaft 10. (See FIGS. 2 and 3).
In this case, a through-hole for allowing the bolt 13a to pass through the tilling claw holder 11 is formed in parallel to the axial direction of the tilling claw shaft 10 (including a substantially parallel concept). Further, the bolt insertion hole formed in the tilling claw holder 11 is formed with a hexagonal hole 20 (see FIG. 2) capable of accommodating the head of the bolt 13a. By fitting the head, the head of the bolt 13 a can be fixed by the hexagonal hole 20.
Therefore, when the cultivating claw 12 is fixed to the cultivating claw holder 11 using the bolt 13a and the nut 13b (and the washer 14 if necessary), the head of the bolt 13a is the thickness of the cultivating claw holder 11. On the other hand, the nut 13b that is screwed onto the end of the bolt 13a protrudes on the outer surface of the tilling claw holder 11 while being fitted and fixed in the section.
Then, by loosening or tightening the nut 13b that is bare on the outer surface of the tilling claw holder 11 using a hand tool or the like, the cultivating claw 12 can be attached to or detached from the tilling claw holder 11. .

Further, in the rotation restricting jig 1 according to the present embodiment, as a structure for enabling the second latch 4 to slide on the operation rod 3 in the axial direction, for example, as shown below A structure may be adopted.
For example, as shown in FIGS. 1 and 2, a cylinder 5 is integrally fixed to a hook-like second latch 4, and the operation rod 3 is inserted into a hollow portion of the cylinder 5. The second latch 4 may be slidable on the operation rod 3.
In this case, the structure for sliding the second hook 4 on the operation rod 3 can be simplified.
As a result, there is an effect that it is possible to manufacture and provide the rotation restricting jig 1 which is simple in structure and hardly breaks or malfunctions at low cost.
1 and 2 exemplify the case where the hook-like second latching tool 4 is fixed on the outer surface of the cylinder 5, the operation rod 3 is replaced with the cylinder 5. An annular body having a hollow part that can be inserted can also be used. Even when an annular body is used instead of the cylindrical body 5, the same effects as when the cylindrical body 5 is used can be exhibited.

In the rotation restricting jig 1 according to the present embodiment, even if the second hook 4 cannot be fixed on the operation rod 3, the tillage claw shaft 10 of the rotation restricting jig 1 can be There is no hindrance to the rotation control effect.
This is because, when the rotation restricting jig 1 according to the present embodiment is installed, the mounting angle of the operation bar 3 with respect to the first hook 2 and the operation bar with respect to the second hook 4 Since both of the mounting angles 3 are unchanged, the rotation control jig 1 according to the present embodiment is mounted between the tilling claw shaft 10 (cultivating claw holder 11) and the rear cover 15 in the state of being attached. This is because the distance between the first hook 2 and the second hook 4 cannot be changed even if the claw shaft 10 is rotated.
However, when the second latch 4 smoothly slides on the operation rod 3, the second latch 4 is touched by an operator when the rotation restricting jig 1 according to the present embodiment is mounted. There is a concern that the stopper 4 may be unintentionally detached from the edge 15 a of the rear cover 15. In this case, the effect of restricting the rotation of the tilling claw shaft 10 by the rotation restricting jig 1 according to the present embodiment cannot be exhibited.
In order to avoid such a situation, the second latching tool 4 can be fixed to the operating rod 3 as necessary while allowing the second latching device 4 to slide on the operating rod 3. Alternatively, it is desirable to prevent the second hook 4 from sliding smoothly on the operation rod 3.

In view of such circumstances, the rotation restricting jig 1 according to the present embodiment may include a slide restricting member for restricting the slide of the cylindrical body 5.
More specifically, as shown in FIGS. 1 and 2, the rotation restricting jig 1 according to the present embodiment includes an operation rod 3 including a first hook 2 and a second hook. In addition to the cylinder 5 having the number 4, the string 6 as a slide restricting member may be provided. Furthermore, the rotation restricting jig 1 according to the present embodiment may include a loop 3 a for hooking the string 6 to the body portion of the operation rod 3.
In this case, as shown in FIGS. 1 and 2, a string 6 as a slide restricting member is inserted into a loop 3a formed in the trunk portion of the operating rod 3 (see FIG. 1), and as shown in FIG. After the rotation restricting jig 1 is interposed between the hooking shaft 10 and the rear cover 15, both ends of the string 6 inserted into the loop 3 a are entangled with the second hook 4, for example. Thus (not shown), the sliding movement of the second latch 4 can be temporarily restricted.

As described above, the rotation restricting jig 1 according to the present embodiment includes the slide restricting member (for example, the string 6) as shown in FIG. It is possible to prevent the second hooking tool 4 from being unintentionally removed from 15 and causing the cultivating claw shaft 10 to rotate unintentionally.
Moreover, since the structure of the slide restricting member (for example, the string 6) and its attachment structure (for example, the loop 3a) as shown in FIG. 1 is extremely simple, the rotation restricting jig 1 provided with these members. Is easy to manufacture and is easy to handle.
1 and 2, the case where the loop 3a for hooking the string 6 that is a slide restricting member is provided in the trunk portion of the operation rod 3 is described as an example, but instead of the loop 3a. Even if hook-like hooks (not shown) or protrusions are provided on the body of the operating rod 3, the same effect can be exhibited.
Further, instead of the string 6, a band body (not shown) made of an elastic material is provided, and the band body is hooked directly or indirectly on the loop 3a of the operation rod 3 or a hook or a projection as an alternative thereof. Even if it makes it, it can exhibit the same effect.

  In FIG. 1, as a slide regulating member for regulating the sliding of the second latch 4, the string 6 or a band body (not shown) is referred to as the operation rod 3 or the cylindrical body 5 (or an annular body (not shown)). Although the case where it is provided separately is described as an example, the slide restricting member for restricting the slide of the second hooking tool 4 is provided between the operation rod 3 and the cylindrical body 5 (or an annular body not shown). It may be interposed.

Here, a modification of the rotation restricting jig according to the present embodiment will be described with reference to FIG.
FIG. 4 is an axial sectional view showing a modification of the slide restricting member of the rotation restricting jig according to the embodiment of the present invention. The same parts as those described in FIGS. 1 to 3 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 4, an anti-slip function as a slide restricting member is provided between the outer surface of the operation rod 3 of the rotation restricting jig according to the present embodiment and the inner surface of the cylindrical body 5 or an annular body (not shown). The material 16a may be interposed.
In this case, the slide of the second latching tool 4 on the operation rod 3 can be suitably restricted.
More specifically, as shown in FIG. 4, the anti-slip material 16a has a groove 5a having a concave cross section formed on the inner surface of the cylinder 5 (or an annular body (not shown)), and slips into the groove 5a. The stopper 16a may be fitted.
Alternatively, instead of forming the groove portion 5a on the inner surface of the cylindrical body 5 (or an annular body not shown), a groove portion (not shown) having a concave cross section is formed on the outer surface of the operation rod 3, and slipping into this groove portion is performed. The stopper 16a may be fitted.

In the former case, the anti-slip material 16a fitted on the inner surface of the cylinder 5 (or an annular body not shown) provided with the second hooking tool 4 rubs on the outer surface of the operation rod 3. become. In the latter case, the cylindrical body 5 (or an annular body not shown) provided with the second hooking tool 4 is rubbed on the anti-slip material 16a fitted on the outer surface of the operation rod 3. become.
In any case, the slide can be regulated by the anti-slip material 16a while allowing the second latch 4 to slide on the operation rod 3.
Therefore, according to the rotation restricting jig according to the modification of the present embodiment, the second latch 4 is unexpectedly detached from the edge portion 15a of the rear cover 15 when the rotation restricting jig is used. Can be suitably prevented, and the safety at the time of exchanging work of the tilling claw 12 can be enhanced.
Moreover, according to the rotation restricting jig according to the modification of the present embodiment, the anti-slip material 16a as the slide restricting member is interposed between the operation rod 3 and the cylindrical body 5 (or an annular body not shown). Since it is accommodated, the appearance of the rotation restricting jig according to the modification of the present embodiment can be made compact. Therefore, according to the rotation restricting jig according to the modification of the present embodiment, it is possible to provide a rotation restricting jig having high functionality and higher aesthetics.

Furthermore, another modified example of the slide restricting member of the rotation restricting jig according to the embodiment of the present invention will be described with reference to FIG.
Fig.5 (a) is a vertical sectional view with respect to the axial direction which shows the other modification of the slide control member of the rotation control jig | tool which concerns on embodiment of this invention, (b) concerns on another modification. It is a vertical cross section with respect to the axial direction which shows the state in which the slide of a cylinder is controlled by the slide control member. The same parts as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and description of the configuration is omitted.
A rotation restricting jig according to another modification of the present embodiment is interposed between the outer side surface of the operation rod 3 and the inner side surface of the cylindrical body 5 as shown in FIG. An anti-slip material 16b is attached to the pressing member 19, and the pressing member 19 can be operated from the outside by, for example, a screw rod 17 and a thumbscrew 18, and the anti-slip material 16b is brought into close contact with the outer surface of the operation rod 3. It may be configured so that it can be moved or separated. That is, the rotation restricting jig according to another modified example includes the anti-slip material 16 b pressed against the outer surface of the operation rod 3.
As shown in FIGS. 5A and 5B, for example, the screw rod 17 has a through hole 5b formed in the cylindrical body 5, and the screw rod 17 is inserted into the through hole 5b. The screw rod 17 may be inserted into and removed from the hollow portion of the cylindrical body 5 by screwing the thumb screw 18 into the screw rod 17.
Alternatively, although not particularly illustrated, the same effect can be exhibited by screwing the screw rod 17 integrally provided with the structural member corresponding to the thumbscrew 18 into the through hole 5b of the cylindrical body 5.

When the slide restricting member for the second latch 4 as shown in FIG. 5 (a) is provided, as shown in FIG. After the rotation restricting jig according to another modification of the embodiment is attached, the screw rod 17 and the pressing member 19 fixed to the end of the screw rod 17 are operated by operating the thumbscrew 18. The anti-slip material 16b provided on the pressing member 19 may be pressed onto the outer surface of the operation rod 3 as shown in FIG.
In this case, the cylinder 5 can be fixed at a desired position on the operation rod 3 by strongly pressing the anti-slip material 16 b against the outer surface of the operation rod 3. That is, the slide of the second latch 4 on the operation rod 3 is restricted.
Therefore, according to the rotation restricting jig according to another modification of the present embodiment as shown in FIG. 5, it is possible to provide a rotation restricting jig with higher safety during use. .

In addition, as a material of the above-mentioned anti-slip | skid materials 16a and 16b, rubber | gum, a synthetic resin, a silicon | silicone elastic material, sponge etc. which consist of these can be used.
Moreover, the 1st latching tool 2, the operating rod 3, and the 2nd latching tool 4 which comprise the rotation-control jig | tool 1 which concerns on this Embodiment, and the rotation-control jig | tool which concerns on the modification. And since the material of the cylinder 5 (or the annular body not shown) needs to have sufficient rigidity, it is desirable that they are all made of metal.

Furthermore, in the rotation restricting jig according to another modification of the present embodiment shown in FIG. 5, even if the pressing member 19 and / or the anti-slip material 16b are not provided, the intended effect can be exhibited. it can.
More specifically, when the rotation restricting jig according to another modification shown in FIG. 5 does not include the anti-slip material 16b, the pressing member 19 itself serves as a slide restricting member (non-slip material). By being pressed onto the outer side surface of 3, the sliding of the second hook 4 on the operation rod 3 can be restricted.
Further, when the rotation restricting jig according to another modification shown in FIG. 5 includes the pressing member 19 but does not include the anti-slip material 16b, the anti-slip material 16b is provided at the tip of the screw rod 17. However, this alone can exert a sufficient regulatory effect. In this case, it is necessary to screw the screw rod 17 into the through hole 5b so that the screw rod 17 does not fall out of the through hole 5b.
Furthermore, when the rotation restricting jig according to another modification shown in FIG. 5 does not include both the pressing member 19 and the anti-slip material 16b, the screw rod 17 is inserted into the through hole 5b formed in the cylindrical body 5. And the screw rod 17 and the butterfly screw 18 may be integrated. In this case, by operating the thumbscrew 18 integrated with the screw rod 17, the end of the screw rod 17 is pressed against the outer surface of the operation rod 3, thereby the second latch on the operation rod 3. The slide of the tool 4 can be restricted. That is, the butterfly screw 18 integrated with the screw rod 17 functions as a slide restricting member (non-slip material).

In particular, when the first hook 2 is made of steel, the strength and durability of the rotation restricting jig 1 according to the present embodiment and the rotation restricting jig according to the modification are greatly increased. Can be increased. Furthermore, the safety | security of the rotation control jig | tool 1 which concerns on this Embodiment is also improved significantly by the intensity | strength and durability of the 1st latching tool 2 being improved.
Further, the rotation restricting jig 1 is reduced in weight within a range that does not hinder the strength and durability of the rotation restricting jig 1 according to the present embodiment and the rotation restricting jig according to the modification. For this reason, a part of the member forming the holding portion 2a of the first latching tool 2 may be punched out.

Finally, another modification of the rotation restricting jig according to the present embodiment will be described in detail with reference to FIGS.
First, an outline of a rotation restricting jig according to another modification of the present embodiment will be described with reference to FIG.
FIG. 6A is a perspective view of a rotation restricting jig according to another modification of the present invention, and FIG. 6B is a side view of the rotation restricting jig. The same parts as those described in FIGS. 1 to 5 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 6, the rotation restricting jig 21 according to another modification mainly includes a first hook 2 detachably attached to the tip of the operation rod 3, and the operation rod 3. The second latching tool 22 is provided so as to be slidable in the axial direction.
Further, in the rotation restricting jig 21 according to this another modification, a screw 26 is screwed into the second latching tool 22, and the tip of the screw 26 is pressed against the peripheral side surface of the operation rod 3. As a result, the slide of the second latching tool 22 on the operation rod 3 can be regulated.
Further, in the rotation restricting jig 21 according to another modification shown in FIG. 6, the first latching tool 2 is detachably fixed to the tip of the operation rod 3 via a bolt 28 (fixing tool). Has been.
In this case, after manufacturing the operating rod 3 and the first latching tool 2 separately, both need only be integrated with the bolts 28, so that the rotation restricting jig 21 can be easily manufactured. Can be.

Here, the first hook 2 of the rotation restricting jig 21 according to another modification will be described in detail with reference to FIG.
FIG. 7 is a perspective view of a first latching tool in a rotation restricting jig according to another modification of the present invention. The same parts as those described in FIGS. 1 to 6 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 7, the first latching tool 2 according to another modified example includes a holding portion 2a ₁ formed by bending a flat plate formed by cutting out a metal flat plate into a desired shape, for example. , and a hook-shaped (curved) portion facing the are fixed in position veneer shaped holding portion 2a ₂ of the holding portion 2a _1, switching between the holding portion 2a ₁ and the holding portion 2a ₂ The notch 2b is provided.
According to the 1st latching tool 2 which concerns on such another modification, the same effect as the 1st latching tool 2 shown by previous FIG. 1 thru | or FIG. 3 can be exhibited.

Furthermore, as shown in FIGS. 6 and 7, the first hook 2 according to another modification may include a claw portion 2 c at the end of the protrusion 2 a _{2 on} the operation rod 3 side. By thus first hooking member 2 according to another modified example comprises a claw portion 2c in the holding section 2a _2, the in Kountsume holder 11 (see Figure 2 and 3 above) It is preferable that the holding portions 2a ₁ and 2a ₂ are detached from the cultivating claw holder 11 or the mounting positions of the holding portions 2a ₁ and 2a ₂ are shifted when the ₁ hook 2 is hooked. Can be suppressed.
In this case, the holding effect of the cultivating claw holder 11 when the first latching tool 2 is mounted is enhanced, whereby the cultivating claw holder 11 is moved by the rotation restricting jig 21 according to another modification. The workability at the time of fixing and exchanging the cultivating claw 12 can be improved.

Furthermore, the first hooking member 2 according to another modification, as shown in FIGS. 6 and 7 may be provided with a plate-shaped connecting portion 2d which is extended to the holding portion 2a _1, 2a ₂ .
Further, as shown in FIG. 7, the connecting portion 2 d is provided with a plurality of bolt holes 29 (two cases are illustrated in FIGS. 6 and 7), and the end of the operation rod 3. For example, it can be detachably mounted via a bolt 28 which is a fixture.
In addition, if the number of the bolts 28 (fixing tools) required to fix the first latching tool 2 according to another modified example to the end of the operation rod 3 is two or more, the number is not specified.
Here, the reason why the number of the bolts 28 is specified as 2 or more is that when a force is applied to the first hook 2 according to another modification, the first hook 2 and the operation rod 3 This is to prevent the connecting portion from rotating about the central axis of the bolt 28 as a base axis.
In addition, when the structure which does not change the attachment angle of the operation rod 3 with respect to the connection part 2d of the 1st latching tool 2 which concerns on another modification is provided separately (for example, the end of the connection part 2d and the operation bar 3) The number of bolts 28 (fixing tools) that connect the first latching tool 2 and the operating rod 3 may be one.
As described above, the operation bar 3 and the rotation restricting jig 21 in the rotation restricting jig 21 according to another modified example are configured separately to produce the rotation restricting jig 21. Can be improved. In addition, in the unlikely event that the first hook 2 is damaged when the rotation restricting jig 21 is used, the rotation restricting jig 21 is simply replaced by replacing the first hook 2. Since it can continue to be used as it is, it has the merit that the useful life of the rotation restricting jig 21 can be extended.

Next, the second latching tool 22 according to another modification will be described in detail with reference to FIG.
FIG. 8 (a) is a perspective view of the second hooking member without screws in a rotation restricting jig according to another modification of the present invention, and FIG. 8 (b) is a rotation restricting jig. It is a side view of the 2nd latching tool in a tool, and FIG.8 (c) is a side view explaining the use condition of the 2nd latching tool in the jig | tool for restricting rotation. The same parts as those described in FIGS. 1 to 7 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIGS. 8A and 8B, the second latching tool 22 according to another modified example has a plate body 23 bent in a hook shape and penetrates the plate body 23 in the thickness direction. However, the screw 26 is provided.
In addition, a plate body 23 according to another modification is formed between a pair of insertion holes 24 formed in the plate body 23 for inserting the operation rod 3 and between the pair of insertion holes 24 in the plate body 23. The screw hole 25 for providing the screw 26 is provided.

In the second latching tool 22 according to such another modification, the plate body 23 and the insertion hole 24 drilled in the plate body 23 are the first in the rotation regulating jig 1 shown in FIGS. 2 acts as a substitute for the latch 4 and the cylinder 5.
Moreover, the 2nd latching tool 22 which concerns on another modification can be manufactured by bend | folding what formed the penetration hole 24 and the screw hole 25 in the plate body 23 previously.
On the other hand, the second latch 4 and the cylinder 5 in the rotation restricting jig 1 shown in FIGS. 1 and 2 are separated from the cylinder 5 and the second latch 4 separately. For example, when both of these are made of metal, it is necessary to work to integrate the second stopper 4 and the cylindrical body 5 by welding or the like.
Therefore, according to the 2nd latching tool 22 concerning another modification as shown to FIG.6, 8, since such a welding operation is unnecessary, it has the merit that the manufacturing cost can be made cheap. Yes.

Moreover, when using the 2nd latching tool 22 which concerns on another modification as shown to Fig.8 (a), (b), as shown in FIG.8 (c), this 2nd latching tool is used. By inserting the operation rod 3 into the pair of insertion holes 24 of the 22, the second latching tool 22 can be slid in the axial direction of the operation rod 3 on the peripheral side surface of the operation rod 3.
Further, as shown in FIG. 8C, a screw 26 is screwed into the screw hole 25 of the second latching tool 22 according to another modified example, and the screw 26 is rotated about its axis to be screwed. By sliding the end of 26 to the operating rod 3 side and pressing it against the peripheral side surface of the operating rod 3, sliding of the second latching tool 22 on the operating rod 3 can be restricted.
That is, according to the 2nd latching tool 22 which concerns on another modification, by providing the screw | thread 26, the jig | tool 1 for rotation control shown in previous FIGS. 1, 2, 4 and 5 and its deformation | transformation Similar to the rotation restricting jig according to the example or another modified example, the second latching tool 22 can be fixed at a desired position on the peripheral side surface of the operation rod 3 or the state can be released. .

In addition, although the synthetic resin and the metal can be used without hindrance as the material of the plate body 23, it is desirable that the material of the plate body 23 is a metal in consideration of the strength and durability of the second hook 22.
Further, as shown in FIGS. 6 and 8, a handle 27 may be provided on the head of the screw 26.
In this case, the rotation operation of the head of the screw 26 can be performed with bare hands without using a tool. Thereby, the operability of the rotation restricting jig 21 according to another modification can be significantly improved.

Furthermore, when the thickness of the plate body 23 is 4.5 mm or less, it is difficult to form a screw thread on the inner surface of the screw hole 25, or even if the screw thread can be formed, the screw 26 is firmly attached. There is a possibility that troubles such as being unable to be screwed to occur. In view of such circumstances, the nut 31 or the same as the nut 31 is formed inside the hooked portion of the bent plate body 23 so as to form a continuous hole with the screw hole 25 (having no thread on the inner surface). A member having the above function may be fixed.
In this case, it is not necessary to provide a process of forming a screw thread on the inner side surface of the screw hole 25 of the plate body 23, and therefore the manufacturing process can be further simplified.
Moreover, when using the nut 31, since the 2nd latching tool 22 can be manufactured by bending the board | plate body 23 whose thickness is 4.5 mm or less, the manufacturing cost can be reduced further. it can.
In addition, since the ready-made product can be used for both the nut 31 and the screw 26, the manufacturing cost of the second latching tool 22 according to another modified example can be reduced from this point.

According to the rotation restricting jig 21 according to another modification including the second latching tool 22 as described above, the rotation restricting jig 1 shown in FIGS. Alternatively, the same operation and effect as the rotation restricting jig according to another modification can be exhibited.
Furthermore, as shown in FIG. 6, the rotation restricting jig 21 according to another modification may include a grip 30 at an end portion on the side where the first hook 2 is not fixed.
Since the rotation restricting jig 21 according to another modification includes the grip 30, it is possible to easily grip the end portion of the operation rod 3. Further, the grip 30 can also exert a function as a retaining member for the second latching tool 22.

  As described above, the present invention is a rotation restricting jig for restricting rotation of a cultivating claw shaft in a cultivator, and can be used in the technical field related to agricultural machinery.

1 ... rotation restricting jig 2 ... first latching member 2a, _2a 1, 2a 2 _... holding portion 2b ... notch 2c ... claw portions 2d ... connecting portion 3 ... operation rod 3a ... loop 4 ... second 5 ... cylindrical body 5a ... groove 5b ... through hole 6 ... string 10 ... cultivation claw shaft 11 ... cultivation claw holder (bracket) 12 ... cultivation claw 13a ... bolt 13b ... nut 14 ... washer 15 ... rear cover 15a ... Edges 16a, 16b ... Anti-slip material 17 ... Screw rod 18 ... Thumbscrew 19 ... Pressing member 20 ... Hexagonal hole 21 ... Rotation restricting jig 22 ... Second latch 23 ... Plate body 24 ... Insertion Hole 25 ... Screw hole 26 ... Screw 27 ... Handle 28 ... Bolt 29 ... Bolt hole 30 ... Grip 31 ... Nut

Claims (8)

A jig for restricting the rotation of the cultivating claw shaft of the cultivator,
A first hook that is detachably hooked to a cultivating claw holder that protrudes on a peripheral side surface of the cultivating claw shaft and fixes the cultivating claw;
An operating rod fixed to the first hook;
And a second latching tool which is provided so as to be slidable in the axial direction of the operation rod and is latched on the edge of the rear cover covering the tilling pawl shaft. Ingredients. The first hook is a holding portion provided so as to surround an outer surface of the cultivating claw holder,
A notch portion formed in the holding portion,
The rotation restricting jig according to claim 1, wherein a nut for fixing the cultivating claw to the cultivating claw holder is bare from the notch. An annular body or a cylinder fixed to the second hook;
The rotation restricting jig according to claim 1 or 2, wherein the operation rod is inserted into a hollow portion of the annular body or the cylindrical body.   The rotation restricting jig according to any one of claims 1 to 3, further comprising a slide restricting member that restricts the slide of the second latching tool. The slide regulating member is a band body made of a string or an elastic material,
The said operation stick is provided with the protrusion or loop for hooking the said string or the said band body on the surrounding side surface, The rotation control jig | tool of Claim 4 characterized by the above-mentioned.   The rotation restricting jig according to claim 4, wherein the slide restricting member is a non-slip material pressed against an outer surface of the operation rod. The second hook has a plate body bent in a hook shape and a screw provided while penetrating the plate body in the thickness direction,
The plate body has a pair of insertion holes that are formed in the plate body to allow the operation rod to pass therethrough, and a screw hole that is provided between the pair of insertion holes in the plate body to screw the screws. And a rotation restricting jig according to claim 1 or 2. The rotation restricting jig according to claim 7, wherein the screw has a handle on a head thereof.

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