JPH0137344Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a handle transfer/fixing device for an agricultural management machine.

[Conventional technology]

Conventionally, agricultural management machines were constructed in such a way that the base of the handle frame could be rotated and fixed to the fixed frame on the upper part of the machine through a chrysanthemum seat so that the handle could be changed. As seen in the publication, with this configuration, sufficient tightening cannot be achieved unless the tightening handle is rotated at least several times, so the structure requires the tightening handle etc. to protrude significantly above the base of the handle frame. In addition, since the structure uses a cam, wear of the cam can cause the position of the tightening handle to change, causing it to protrude to the side of the machine, creating a danger of hitting workers or crops. It has the disadvantage that it can become a hindrance.

[Problem that the invention attempts to solve]

The present invention solves such drawbacks, and allows the operating lever for tightening and releasing to be conveniently installed without protruding laterally above the handle frame and becoming a danger or hindrance. At the same time, the control lever can be operated quickly, easily, and reliably by just slightly rotating it, and because it can be firmly tightened, the control lever can be placed in narrow spaces in the fuselage, such as on the side of the engine. The present invention is provided so that the entire structure can be compactly configured and can be suitably implemented.

[Means for solving problems]

Therefore, in the present invention, a support shaft that is fixed to the fixed frame is set up high in the center of the chrysanthemum seat below the handle frame base and the chrysanthemum seat on the top of the fixed frame, which engage vertically, and the upper part of the support shaft is The screw part at the bottom of the rotation shaft was screwed together so that the thread pitch was approximately four times or more than the engagement depth of both chrysanthemum seats, and it was fixed in the base of the handle frame above the center of the upper chrysanthemum seats. The rotary shaft is disposed within the support cylinder so that it can be pressed and fixed downwardly to the support cylinder, and the rotary shaft is fitted onto the rotary shaft so as to be able to engage and release the rotary shaft with a spline. An operating cylinder is provided, and the tip shaft portion of the operating lever is fitted into the upper part of the operating cylinder that projects above the handle frame base in a perpendicular direction.

[Effect]

With this configuration, by simply rotating the operating lever approximately 90 degrees, you can operate the upper and lower chrysanthemum seats to a state where they can be separated by engaging the threaded part, lifting the handle frame slightly and rotating it in the desired direction. Then, by slightly operating the operating lever in the opposite direction, the handle can be fixed by screwing the threaded portion.

〔Example〕

Next, the embodiment shown in the drawings will be described.

FIG. 2 shows a perspective view of the agricultural management machine, in which both wheels 9 are mounted on both sides of the lower part of the transmission case 8, and an engine E is mounted on the front part.
It is installed so that the transmission can be transmitted from the belt pulley in the belt cover 10 to the transmission case 8,
A rotary work machine C is connected to the rear part, and a handle rod 11 is connected to the upper end side of the handle frame A that extends diagonally upward from above the fixed frame B that is connected to the upper part of the transmission case 8 that is the upper part of the machine body. It is constructed in the same way as the conventional structure.

An annular chrysanthemum seat 2 is integrally formed on the upper surface of the fixed frame B, and the lower part of a support shaft 3 extending vertically upward from the center of the chrysanthemum seat 2 is fixed to the fixed frame B, and the tip A handle frame A with a cover 12 removably attached to the side thereof is provided, and an annular chrysanthemum seat 1 that can be engaged with the chrysanthemum seat 2 is provided on the lower surface of the base a of the handle frame A.
A support cylinder 5 is formed on the lower surface and extends upward from the center of the upper chrysanthemum seat 1, and is integrally fixed within the handle frame base a with its upper end protruding slightly beyond the upper surface of the handle frame base a. The upper part of the support shaft 3 is installed so as to loosely fit inside the lower part of the support cylinder 5.

The female threaded part 3a in the axial direction formed in the upper part of the support shaft 3 has a threaded part 4a formed with a small diameter in the lower part of the rotary shaft 4, so that the thread pitch P thereof is greater than the engagement depth H of the chrysanthemum seats 1 and 2. The lower end of the large-diameter hole 5a formed in the upper inner periphery of the support cylinder 5 is pressed against the lower end circumferential surface of the rotary shaft 4 in the axial direction. A washer 13 is fitted on the lower inner periphery of the actuating cylinder 6 which is freely rotatably fitted between the large diameter hole 5a of the support cylinder 5 and the rotating shaft 4. A spline 6a that can fit into the spline 4b is formed, and a compression spring 15 is fitted between the support washer 14 locked to the upper end surface of the rotating shaft 4 and the upper part of the spline 6a of the actuating cylinder 6.

It goes without saying that a female threaded portion may be formed on the rotating shaft 4 side and a male threaded portion may be formed on the support shaft 3 side.

7 is an L-shaped operating lever with a grip 7b at the rear end.
The distal end shaft portion 7a of the operating lever 7 having a diameter is inserted into the upper part of the operating barrel 6 that protrudes above the support barrel 5 in the orthogonal direction, and the inner shaft portion 7a of the operating barrel 6 is inserted into the upper part of the operating barrel 6. A snap ring 15 for stopping is engaged, and a rubber cap 16 having a thin wall around one side is attached to the upper part of the actuating cylinder 6.

FIGS. 7 and 8 show another embodiment, which has the same structure as the previous embodiment as indicated by the same reference numerals, but on the side of the handle frame A where the grip 7b of the operating lever 7 is located. A stepped recess 17 is formed in the section.

Therefore, when the handle is locked, the operating lever 7 is in a state where it is tilted above the handle frame base a, and in the other embodiments shown in FIGS. is placed inside the recess 17, so that the handle frame A is in this state.

When changing the handle and rotating it, hold the grip 7b and rotate the operating lever 7 horizontally by approximately 90 degrees, and the actuating barrel 6 will also rotate in the same way, and the spline fitting will allow it to operate. When the rotating shaft 4 is similarly rotated by the cylinder 6, the rotating shaft 4 is engaged with the chrysanthemum seats 1 and 2, and the rotating shaft 4 is raised to a height slightly higher than H, and in this state, the handle is rotated. When frame A is lifted, the upper chrysanthemum seat 1 will be separated above the lower chrysanthemum seat 2 as shown in Fig. When the operating lever 7 is rotated in the desired direction and then slightly rotated approximately 90 degrees in the original direction, the lowering of the rotating shaft 4 will push down the support cylinder 5 via the washer 13. Therefore, both chrysanthemums 1 and 2 can be engaged and locked.

Also, hold the operating lever 7 and expand the compression spring 15 until the spline 6a is separated above the spline 4b of the rotating shaft 4, and pull up the operating barrel 6, so that the operating lever 7 and the grip 7b are placed above the handle frame A. When the lever is rotated as shown in FIG. Become.

[Effect of idea]

In this way, the present invention allows the operating lever 7 to be slightly
By simply rotating the handle frame A a certain degree, the upper and lower chrysanthemum seats 1 and 2 can be separated by engaging the threaded part 4a. By operating the operating lever 7 in the opposite direction slightly, the threaded portion 4a is engaged to firmly engage the chrysanthemum seats 1 and 2 without any play, thereby locking the handle. When the operating cylinder 6 spline-fitted to the shaft 4 is pulled up with the operating lever 7 so that the fitting is released, and the operating lever 7 and the operating cylinder 6 are rotated and spline-fitted again, the operating lever 7 is released. It is possible to adjust the movement of the operating lever 7 to the handle frame A so as not to hit the worker or the crops.
It can be operated quickly, easily and reliably by just slightly rotating the lever, and it can be firmly tightened, so the operating lever 7 can be located in a narrow space in the machine body, and the whole machine body can be configured compactly. It has the advantage of having a simple structure and being able to be suitably implemented.

[Brief explanation of drawings]

Figure 1 is a side sectional view of the main part of an embodiment of the present invention, Figure 2 is a perspective view of the agricultural management machine, and Figure 3 is the first
FIG. 4 is a plan sectional view of a portion of FIG. 1, FIGS. 5 and 6 are explanatory diagrams of the operation of FIG. 1, and FIG. 7 is another example. FIG. 8 shows a top view of a part thereof. A...Handle frame, a...Base, B...
Fixed frame, 1, 2... Chrysanthemum seat, 3... Support shaft, 4... Rotating shaft, 4a... Threaded portion, P... Pitch, H... Engagement depth, 5... Support tube, 6... ...Operating tube, 7...
...Operation lever, 7a...Shaft portion.

Claims (1)

[Scope of utility model registration request] In an agricultural management machine configured such that the base a of the handle frame A can be rotated and fixed to the fixed frame B at the upper part of the machine body through chrysanthemum seats 1 and 2 so that the handle can be changed, the handle frame base a engages vertically.
At the center of the chrysanthemum seat 1 on the lower side and the chrysanthemum seat 2 on the upper part of the fixed frame B, a support shaft 3 fixed to the fixed frame B is erected high above.
The upper part of the support shaft 3 has a threaded part 4a at the lower part of the rotation shaft 4.
are screwed together so that the screw pitch P is approximately four times or more than the engagement depth H of both chrysanthemum seats 1 and 2,
The rotation shaft 4 is disposed in a support tube 5 fixed in the handle frame base a above the center of the upper chrysanthemum seat 1 so as to be press-fitted downward to the support tube 5, An operating cylinder 6 is provided which is fitted onto the rotating shaft 4 so as to be able to engage and release the rotating shaft 4 through spline engagement, and an operating lever is provided on the upper part of the operating cylinder 6 that protrudes above the handle frame base a. 7
A handle transfer and fixing device characterized in that the tip shaft portion 7a of the handle is inserted and inserted in an orthogonal direction.