JP4249404B2 - Locking device for operation lever - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation lever locking device that adjusts a working portion by rotating an operation lever.
[0002]
[Prior art]
With conventional, the locking device of this type of operation lever, a base end side of the operation lever, and welded to the top of the bracket for rotating the support pin digits set to the machine frame as the fulcrum by providing thereto integrally form It is known that the bracket is provided with a pin for hooking the tip of the inner wire, and a lever guide for setting the degree of adjustment of the working portion is provided on the tip side of the operation lever. However, in order to prevent the operation lever and the inner wire from coming off, this has a split pin, a snap pin, a washer, etc. separately on the tip side of the support pin and the tip side of the inner wire. In addition, since the processing step for attaching the split pin etc. to the support pin and the pin side has been performed, the number of parts is high, and the man-hours for these processing and assembly are high. It was .
[0003]
[Problems to be solved by the invention]
Therefore, the present invention does not require any member such as a pin for preventing the operation lever or the inner wire from coming off in the operation lever locking device, and reduces the number of parts and the number of steps for processing and assembly. Thus, it is possible to reduce the cost as a whole and eliminate the above-mentioned conventional drawbacks.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in the operating lever locking device that adjusts the working portion by rotating the operating lever, the base of the operating lever is configured by a U-shaped bracket, the round hole on the machine frame side of the Jo bracket, the elongated hole to allow the swinging of the body width direction of the operating lever on the other side respectively drilled, the machine frame of the operating lever through the round holes and elongated holes The lever support pin is pivotally fitted to the provided lever support pin, and a rotation guide groove for guiding the adjustment rotation of the operation lever is provided at the distal end side of the operation lever, and a plurality of orthogonal to the rotation guide groove. and a setting groove formed provided lever guide for setting the adjusting degree of the working portion, the maximum moving distance of the setting groove direction of the operating lever, during rotational operation of the control lever, a U-shaped bracket Lever support pin and outer end in contact with the lever support pin It is set to be smaller than the distance between the end, between the lever support pin and the top of the U-shaped bracket, that it has stretched the bullet machine for urging the operating lever in the setting groove side of the lever Guide One feature.
[0005]
Also, a wire support pin protrudes from the U-shaped bracket, and the tip of the inner wire is hooked to the wire support pin, while the support position of the outer wire is set to the hook portion of the inner wire to the wire support pin. The second feature is that the working portion is adjusted by deviating toward the base side of the wire support pin and operating the inner wire by rotating the operation lever.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An example of an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall plan view of a passenger rice transplanter equipped with the device of the present invention. Like a normal rice transplanter, 1 is a traveling machine body equipped with a pair of wheels on the front and rear and a rice transplanter 2 mounted on the rear. In the front part of the traveling machine body 1, a bonnet 3 with an engine built therein, auxiliary seedling platforms 4 and 4 provided so as to project from the left and right of the machine body 1, a handle 5 for driving operation, and the like are arranged in the center part. Includes a control lever 7 for adjusting hydraulic sensitivity, a seedling planting lever 8 and the like sandwiching the seat 6, and the rice transplanter 2 provided at the rear includes a seedling platform 9, an apron 10, A plurality of planting frames 11, a seedling planting device 12, and a float 13 provided below them are provided.
14 and 14 are step mats provided on the left and right of the front part of the fuselage 1, 15 is a left and right brake pedal, 16 is a clutch pedal, 17 is a wide step straddling the left and right for the driver, Steps for raising and lowering the traveling machine body 1, and 19 and 19 are rear steps used for seedling replenishment and the like.
[0008]
Next, FIGS. 2 to 4 are a front view, a plan view, and a side view of the main part, respectively, and the operation lever 7 has a substantially right-angled shape in the middle as shown in FIGS. The lever support pin 22 that is erected from the machine frame 21 is bent to one side of the U-shaped bracket 23 that is rotatable about a lever support pin 22 as a fulcrum. Accordingly, as seen from the side view of FIG. 4, when the operation lever 7 is rotated in the direction of the arrow, the operation lever 7 rotates integrally with the U-shaped bracket 23 around the lever support pin 22 as a rotation fulcrum. It moves.
[0009]
The U-shaped bracket 23 is fitted to the lever support pin 22 by a simple round hole 25 on the machine frame 21 side and is fitted and supported by the lever support pin 22, but the penetrating side of the operation lever 7 is vertically long. The long hole 26 (see FIG. 4) allows the operation lever 7 to swing in the body width direction.
On the other hand, 28 has a rotation guide groove 36 for guiding the adjustment rotation of the operation lever 7 and a plurality of setting grooves 29 provided orthogonal to the rotation guide groove 36 to set the degree of adjustment of the working part. The lever 7 is operated by the urging force of the return spring 30 stretched between the hole 27 provided at the top of the U-shaped bracket 23 and the lever support pin 22. It is adapted to be hooked on the setting groove 29. (State of FIG. 3)
[0010]
Here, A is the maximum movement distance of the operating lever 7 in the setting groove 29... Direction, and the outer end of the U-shaped bracket 23 fitted to the support pin 22 and the support when the operating lever 7 is rotated. When the distance from the pin tip 22a is B, the relationship between the distances is set so that B> A.
Therefore, even if the operating lever 7 is moved to change the set latching position, even if the groove 29 is changed to B> A, the U-shaped bracket 23 is disengaged from the support pin 22. There is no need to provide a separate retaining member such as a pin on the support pin 22 as in the conventional apparatus, and the number of parts can be reduced and the number of processing and assembly processes for the support pin 22 can be reduced. This is a cost reduction.
[0011]
Further, the penetrating portion of the operation lever 7 provided in the U-shaped bracket 23 serves as a wire support pin 20, and an inner wire 31 is attached via a fixture 32. Reference numeral 33 denotes an outer wire, and reference numeral 34 denotes an outer receiver attached to the support pipe 35.
Therefore, when the operation lever 7 is operated in the direction of the arrow in FIG. 4, that is, in the vertical direction along the vertical groove 36 of the lever guide 28, the inner wire 31 is pushed and pulled with respect to the outer wire 33, which is not shown. Adjustment of the working part (hydraulic sensitivity adjustment in this embodiment) is performed.
[0012]
As seen in the plan view of FIG. 3, the front end hooking portion of the inner wire 31 is attached with the attachment position to the operation lever 7 slightly closer to the machine frame 21 side with respect to the attachment portion of the outer wire 33. That is, in other words, the mounting position of the outer wire 33 with respect to the center of the inner wire 31 is slightly displaced to the base side of the wire support pin 20 where the inner wire 31 is difficult to be removed from the wire support pin 20, and the U-shaped bracket. Unlike the conventional device in which the mounting center of the inner wire and the mounting position of the outer wire are provided on the same straight line on the pin erected on the outside of the bracket, the wire is prevented from coming off separately. It does not require any measures.
Reference numeral 37 denotes a cover.
[0013]
Furthermore, when viewed from the front of FIG. 2, the return spring 30 is brought close to the distal end side of the wire support pin 20 in the U-shaped bracket 23 and when viewed from the side of FIG. 4, the wire support pin 20. Thus, the coil outer diameter of the return spring 30 exists near the inner wire 31, and this configuration also promotes the effect of preventing the wire from coming off. .
[0014]
Next, what is shown in FIG. 5 is a front view of the main part on the passenger rice transplanter main unit side, and the positions of the left and right front wheels 38, 38 are usually hidden under the floor 39. When loading and unloading on a transport vehicle, or when entering or leaving a field using a bridge, it was necessary to pay close attention to prevent the wheels from being removed from the bridge.
Therefore, in this case, left and right protrusions 40, 40 that allow the tire tread to be understood are provided on the floor 39 directly above the front wheels 38, 38, and this contributes to safety, and the protrusion 40 is used for operations such as seedling replenishment on the floor 39. Anti-slip at times.
The protrusion 40 may be provided with a right and left front step mats 14 and 14 extending directly above the front wheels 38 and provided integrally with the step mats 14 and 14 as a front wheel position indicator and anti-slip. .
[0015]
The rice transplanter provided with the operation lever locking device of the present invention has the above-described configuration. When starting the rice transplanting work, first, the auxiliary seedling platforms 4 and 4 in front of the traveling machine body 1 and A mat seedling is placed on the seedling placing stand 9 at the rear, and each part is driven in the field to perform seedling planting work. At this time, depending on conditions such as the hardness of the field, the hydraulic sensitivity is adjusted by adjusting the posture of the float 13... However, when the lever 13 is not suitable for the operation at the preset position of the lever guide 28 of the operating lever 7 and the float 13 sinks and pushes mud, or conversely, the float 13 floats off the surface, the operating lever 7 is The grip 13 is removed from the initially set groove 29 and is rotated back and forth along the longitudinal groove 36 to adjust the posture of the float 13. The oil pressure sensitivity is adjusted so that planting can be carried out by the amount, and work is always performed in an appropriate state.
[0016]
Here, in the adjustment operation of the operation lever 7, the maximum movement distance A of the operation lever 7 in the setting groove 29... Direction is the lever support pin of the U-shaped bracket 23 when the operation lever 7 is rotated. 22 is set to be smaller than the distance B between the outer end in contact with the support pin 22 and the support pin tip 22a, and the length of the lever support pin 22 is changed by moving the operation lever 7 in the direction of the setting groove 29 of the lever guide 28. 7 is set to a length that does not come out of the lever support pin 22, so that even if the operating lever 7 is operated and hooked into another groove 29, the lever does not come off, and the operation In order to prevent the lever 7 from coming off, it is not necessary to take any measures such as a split pin on the lever support pin 22.
In addition, the base end of the operation lever 7 passes through one halfway portion 24 of the U-shaped bracket 23 to form the wire support pin 20, and the inner wire 31 is hooked on the wire support pin 20 within the U-shaped bracket 23. And the position where the outer wire 33 is supported is displaced to the base side of the wire support pin 20 with respect to the hooking portion of the inner wire 31 on the wire support pin 20, and the U-shaped bracket. 23, a return spring 30 for urging the operation side of the operation lever 7 to the setting groove 29 side of the lever guide 28 is stretched on the open side of the tip of the wire support pin in the wire 23. It does not require stop measures.
In addition, although the operation lever 7 in this application showed the example which performs the hydraulic sensitivity adjustment of a rice transplanter as a working part, this application is not restricted to this, and the thing which has a similar guide structure, wire attachment structure, and wire structure in general It can be widely applied.
[0017]
【The invention's effect】
As described above, in the operation lever locking device that adjusts the working portion by rotating the operation lever 7 as described above, the base portion of the operation lever 7 is constituted by the U-shaped bracket 23, and the U-shaped A round hole 25 is formed on the machine frame side of the bracket 23, and a long hole 26 that allows the operation lever 7 to swing in the width direction of the machine body is formed on the other side, and the operation is performed via the round hole 25 and the long hole 26. The lever 7 is rotatably fitted to a lever support pin 22 provided in the machine frame , and a rotation guide groove 36 for guiding the adjustment rotation of the operation lever 7 is provided at the distal end side of the operation lever 7. the lever guide 28 for setting an adjustment degree of the working portion is provided and a setting groove 29 which plurality orthogonally to the pivoting guide groove 36, the maximum moving distance of the setting groove 29 direction of the operating lever 7 A is a U-shaped bracket when the operating lever 7 is rotated. 23 is set to be smaller than the distance B between the outer end contacting the lever support pin 22 and the lever support pin tip 22a, and the operation lever 7 is placed between the top of the U-shaped bracket 23 and the lever support pin 22. Since the ammunition 30 that urges the lever guide 28 toward the setting groove 29 is stretched, there is no need to take any measures such as a split pin on the lever support pin 22 in order to prevent the operation lever 7 from coming off . Unlike conventional devices, parts such as cotter pins, snap pins and washers are not required, and not only the number of parts can be reduced, but also the shaft side processing for preventing slipping and the number of man-hours required to assemble them can be reduced. Thus, the cost can be reduced.
[0018]
Further, a wire support pin 20 is projected from the U-shaped bracket 23, and the tip of the inner wire 31 is hooked on the wire support pin 20, while the support position of the outer wire 33 is set to the wire support pin of the inner wire 31. by offset to the base side of the wire support pin 20 relative to the hooking part to 20, the turning operation of the operating lever 7, by operating the inner wire 31, since the adjustment of the working unit, wire ya the supporting lifting pin 20 without any need for retaining measures of the inner wire 31, in which the cost can be reduced more remarkably.
[0019]
Furthermore, since the outer diameter of said U-shaped stretched the bullet machine between the top portion of the bracket 23 and the lever support pin 22 (return spring 30) is to cover the tip of the wire support pins 20, the upper Symbol inner The effect of preventing the wire 31 from coming off is promoted.
[Brief description of the drawings]
FIG. 1 is an overall plan view of a riding rice transplanter equipped with the device of the present invention.
FIG. 2 is a front view of a main part of the present application.
FIG. 3 is a plan view of the main part of the same.
FIG. 4 is a side view of the main part of the same.
FIG. 5 is a front view of a main part on the side of the riding rice transplanter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Rice transplanter 7 Operation lever 13 Float 20 Wire support pin 21 Machine frame 22 Lever support pin 22a Lever support pin tip 23 U-shaped bracket 24 One side halfway part 26 Long hole 28 Lever guide 29 Setting groove 30 Return spring 31 Inner Wire 33 Outer wire 34 Outer receptacle 36 Rotation guide groove A Movement range B of the operation lever in the setting groove direction Distance between the outer end contacting the support pin of the U-shaped bracket and the tip of the support pin when the operation lever is rotated

Claims (2)

In the operating lever locking device that adjusts the working part by rotating the operating lever, the base of the operating lever is composed of a U-shaped bracket, and a round hole is provided on the machine frame side of the U-shaped bracket. A long hole that allows the operating lever to swing in the machine width direction is drilled on the side, and the operating lever is rotatably fitted to the lever support pin provided on the machine frame via the round hole and the long hole. while, above the front end side of the operation lever, the a rotating guide groove for guiding the adjusting rotation of the operation lever, the working portion and a setting groove provided more perpendicular to the pivoting guide groove A lever guide is provided to set the degree of adjustment of the operation lever, and the maximum movement distance of the operation lever in the direction of the setting groove is determined so that the outer end contacting the lever support pin of the U-shaped bracket and the lever support pin when the operation lever is rotated. Set smaller than the distance to the tip, the U-shaped Between the top of the racket and the lever support pin, characterized in that stretched the bullet machine for urging the operating lever in the setting groove side of the lever guide, the locking device of the operating lever. A wire support pin protrudes from the U-shaped bracket, and the tip of the inner wire is hooked on the wire support pin, while the support position of the outer wire is set to the hook of the inner wire on the wire support pin. 2. The operation lever according to claim 1, wherein the working portion is adjusted by moving the inner wire by rotating the operation lever by deviating the wire support pin to the base portion side. Stop device.

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