JPH09109718A - Running lever guide of mobile farm machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the constitution of a running lever guide by improving controllability of the running control lever of a mobile farm machine so as to carry out sliding contact linking motion of a retreating arm operated by means of a control lever and engaging lock of a control position lever 1 smoothly and certainly. SOLUTION: A lever guide 2 for guiding a control lever 1 which makes longitudinal turning motion is provided with an advancing guide 3 for making guidance between a running transmission cutting stop position D and an advancing transmission starting advanced position F, and provided with a retreating guide 4 for making slant guidance between this stop position D and a retreating transmission starting retreating position R located slantly backward by one side. The constitution of a running lever guide is such one that the control lever 1 is placed in its sliding motion so as to form engagingly locking parts 7, 8 respectively making engaging lock with the stop position D and retreating position R in a retreating arm 6 for making linking motion of ON/ OFF of retreating transmission by making turning motion between those stop position D and the retreating position R while being capable of making left and right turning motion around a hinge 5 in the front position on the retreating position R side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling lever guide for a mobile agricultural machine, including a binder, a combine, a rice transplanter,
It can be used for mobile agricultural machines such as cultivators and tractors.

[0002]

2. Description of the Related Art In a traveling lever guide structure in which a clutch is engaged / disengaged by an operating lever that rotates in the front / rear direction and a forward / reverse switching arm is interlocked and switched by the operating lever, In order to smoothly move the lever left and right,
Although it is desirable to make the change in the frictional resistance between the lever and the lever guide of the operation lever small in the configuration in which the lever guide is linearly inclined, in such a form, the locking property of the operation lever at the clutch disengaged position is not sufficient. If the structure is stable or the switching arm side is provided with the lock of the operation lever, the interlocking mechanism on the switching arm side becomes complicated.

[0003]

According to the present invention, a lever guide 2 which guides an operation lever 1 which is rotated forward and backward is composed of a stop position D for traveling transmission cutting and a forward movement position F including forward transmission just before this. There is a forward guide 3 for guiding the space, and a reverse guide 4 for inclining and guiding between the stop position D and a reverse position R for entering the reverse transmission on one side obliquely rearward. The operating lever 1 is slid on the reverse arm 6 which is rotatable left and right around the hinge 5 and rotates between the stop position D and the reverse position R to interlock the reverse transmission transmission. And the reverse position R, the engaging portions 7 and 8 are formed to form the traveling lever guide.

[0004]

When the operating lever 1 is placed at the stop position D of the lever guide 2, the traveling transmission can be cut off and maintained at the stop position. At this time, the reverse arm 6
Is rotating around the hinge 5 to the stop position D, and the operation lever 1 is locked by the locking portion 7 so that the operation lever 1 does not move to the reverse guide 4 side and the stop position D is stabilized. Keep it up.

Forward transmission is performed by operating the operating lever 1 from the stop position D to the forward guide position F by guiding it to the forward guide 3 against the locking force with the reverse arm 6. However, the reverse arm 6 is not rotated from the stop position D to the forward guide 3 side. Also, operating lever 1
When the backward guide 4 is guided rearward from the stop position D and is operated to the backward position R, the backward arm 6 is pushed by the operation lever 1 and rotated around the hinge 5 accordingly. The locking position with the locking part 7 moves to the locking part 8 on the tip side, and the locking with the locking part 8 locks the movement to the stop position D side.

Further, by operating the operation lever 1 to the stop position D side against the locking force of the reverse position R with the reverse arm 6, the reverse transmission can be cut to the stop position D. In this way, the operation lever 1 is guided by the reverse guide 4 which is inclined between the stop position D and the reverse position R, and is operated by sliding it on the reverse arm 6 so that the travel transmission stops at the stop position D. Since it is to switch to the reverse position R,
By operating the operating lever 1 linearly in an oblique direction,
It is possible to perform a smooth operation, and by switching the locking portions 7 and 8 with the reverse arm 6 that is rotated in sliding contact with the operation lever 1, the locking at each stop position D and the reverse position R is automatically performed. Done and the configuration can be simplified.

[0007]

[Embodiment] A case where the traveling lever is used as a binder will be exemplified. The binder is a pair of left and right wheels 1 on a single axle 9.
0 is arranged, an engine E and a loop-shaped handle 11 are provided in the rear part, and the grain culm raising device 12, the cutting blade device 13, and the front part are provided.
And a focusing device 14, a bundling device 15, etc.
Is driven to drive the wheels 10 and travel, while transmitting each part of the reaping device such as the grain culm raising device 12 and the like to slash and bind the grain culms.

The handle 11 is provided with a left operation lever 1 for traveling on the engine E in the center and a lever guide 2 thereof, and a gear shift lever 16 for traveling traveling on the front side of the engine E, and this. A lever guide 17 is provided, and a reaping clutch lever 18 is provided on the right side to turn the reaping transmission on and off.
And a lever guide 19 are provided. The lever guide 2 for guiding the operation lever 1 includes a forward guide 3 formed in a straight line extending in the front-rear direction, and a reverse guide 4 extending obliquely from the rear end of the forward guide 3 toward the rear center. Further, the neutral guide 20 is formed linearly in an oblique direction so that the rear ends thereof join and the front ends open to the right on the right side of the forward guides 3.

In such a lever guide 2, a confluence portion of the forward guide 3, the reverse guide 4 and the neutral guide 20 is set as a stop position D, and a shallow recess 21 into which the operating lever 1 can be fitted is formed on the left edge. ing. The front end of the forward guide 3 is set to the forward position F, and the front end of the neutral guide 20 is set to the neutral position N. Further, the rear end portion of the reverse guide 4 is set to the reverse position R,
A recess 22 into which the operating lever 1 can be fitted is formed on the left edge of the lower end portion.

The operation lever 1 has a wire 2 at the lower end.
3 in conjunction with the main clutch 25 in the mission case 24, the stop position D to the neutral position N of the operating lever 1
Then, disengage the main clutch 25 and operate the operating lever 1
In the forward drive position F or the reverse drive position R, the main clutch 25 is interlocked. The reverse arm 6
The lower end of the lever guide 2 is provided with the front end portion at the neutral position N.
It is pivotally supported by a hinge 5 on the lateral side of the part and is rotatable so that the rear end part can be rotated in the left-right direction.
The reverser gear 29 in the mission case 24 is interlocked with the forward side and the reverse side via a wire 27. Also, this reverse arm 6
Is provided so as to be constantly rotated from the reverse position R side to the stop position D side by a spring or a biasing spring of the main clutch 25 and the like.

Such a reverse arm 6 has the hinge 5
Although it rotates around, the radius L1 of the stop position D centered on the hinge 5 so that the operation lever 1 is slidably contacted with the front surface.
And a radius L2 of the reverse position R, and
A chevron-shaped convex portion 28 is formed between these radii L1 and L2, and the hinge 5 side of the convex portion 28 is used as a locking portion 7 to lock the operating lever 1 at the stop position D. The distal end side of the control lever 1 is used as the locking portion 8 to lock the operation lever 1 at the reverse position R.

Therefore, when operating the operating lever 1 along the reverse guide 4 between the stop position D and the reverse position R, the front and rear locking portions 7 and 8 are moved beyond the convex portion 28 of the reverse arm 6.
It comes to switch engagement with and. Mission case 2
The transmission mechanism in 4 is the transmission shaft 3 transmitted from the engine E.
The main clutch 25 can be turned on and off by a shifter operation by the operation lever 1, and the shift gear 31 can be switched by a shifter operation by the shift lever 16. A reverser gear 29, which is switched by a shifter operation by the reverse arm 6, and a cutting clutch 35, which turns on / off the output transmission to each part of the cutting device on the front, are mounted on a shaft 32 which is gear-engaged with the transmission gear 31 and transmitted.
Are provided.

The reverser gear 29 is used for the traveling transmission mechanism 3.
By interlocking the axle 9 via 3, 34 and switching the reverser gear 29, the wheel 10 can be rotated forward or backward to rotate forward or backward. FIG. 7 and FIG. 8 show a structure of a cord brake that works a brake for pulling out a cord for binding in the binder. A brake base 36 integrally attached to the binder body, a brake plate 38 for sandwiching a binding cord 37 between the brake base 36 and a brake for pulling out the cord, and a base of the brake plate 38 via a link 39. The lever 40 is configured to be connected with each other to switch between the brake posture A and the brake release posture B, and the spring 41 for pressing the brake plate 38 against the upper surface of the brake base 36.

The brake plate 38 has a bending portion 42 near the connecting portion with the link 39, and the pressing portion by the spring 41 is located closer to the tip side than the bending portion 42. A guide groove 43 is formed in this tip portion, and it is fitted with a guide pin 44 on the brake base 36 to guide it in a vertically movable manner. 45
Is an adjusting dial for adjusting the pressing force of the spring 41, and can be rotationally adjusted with respect to a guide pin 48 that is fixed on the brake base 36 and guides the brake plate 38 so as to be vertically movable. 4
6 is a cord guide for guiding through the binding cord 37, and 47 is an arm integral with the lever 40, which can press the cord guide 46. The lever 40 is rotated toward the brake base 36 side and the brake plate 38 is used. When the string clamp is released A, the string guide 46 is pressed by the arm 47 to be positioned on the side of the string brake portion B of the brake base 36 so that the string 37 can be easily threaded. Further, when the brake plate 38 is brought into contact with the brake base 36 to actuate the brake, the string guide 46 is lifted by its own elastic force to move the string 3.
The drawer of 7 is pulled.

When the lever 40 is raised and the cord brake is operated, the brake plate 38 is moved by the link 39.
With the base portion of the device being pulled up and the bending portion 42 being in contact with the surface of the brake base 36, the brake portion B on the tip end side is pressed against the surface of the brake base 36 to clamp C and the string 37 to operate the brake. It will be. 9 and 10, the difference from the above example is that instead of the link 39 connecting the lever 40 and the brake plate 38, the spring 4 is used.
9 is provided and the elastic force of the spring 49 is used to obtain the braking force of the brake plate 38, which improves operability. The spring 49 can be attached around the lever shaft 50 of the lever 40 and integrally rotated.

When the lever 40 is rotated upward, the tip of the spring 49 floats above the base of the brake plate 38,
The brake portion B of the brake plate 38 is pressed against the upper surface of the lower brake base 36 by the spring 41, and the pull-out of the string 37 is braked. Also, the lever 40
Is rotated downward, the tip of the spring 49 presses the base of the brake plate 38, so that the brake plate 38 is rotated upward with the bending portion 42 as a fulcrum against the spring 41. , The brake is released by opening a space from the surface of the brake base 36.

[Brief description of the drawings]

FIG. 1 is a plan view of an operation lever guide portion.

FIG. 2 is a side view thereof.

FIG. 3 is a plan view showing the operation.

FIG. 4 is a plan view showing the operation.

FIG. 5 is a transmission system diagram of a binder.

FIG. 6 is a plan view of a binder.

FIG. 7 is a perspective view of a string brake unit.

FIG. 8 is a side view thereof.

FIG. 9 is a side view of a cord brake part showing another embodiment.

FIG. 10 is a side view and a plan view showing the operation.

[Explanation of symbols]

 1 Operation lever 2 Lever guide 3 Forward guide 4 Reverse guide 5 Hinge 6 Reverse arm 7 Locking part 8 Locking part D Stop position F Forward position R Reverse position

Claims (1)

[Claims] 1. A lever guide 2 which guides a back-and-forth rotating operation lever 1, and a forward guide 3 which guides between a stop position D where traveling power transmission is cut off, and a forward drive position F where forward drive transmission is immediately preceding. And a reverse guide 4 that obliquely guides between the stop position D and a reverse position R including a reverse transmission which is obliquely rearward on one side, and is rotatable left and right around a hinge 5 at a front position on the reverse position R side. Then, the operation lever 1 is slid on the reverse arm 6 which rotates between the stop position D and the reverse position R to interlock with the on / off of the reverse transmission, thereby engaging the stop position D and the reverse position R respectively. A traveling lever guide having locking portions 7 and 8 for stopping.