JPS60990Y2 - Walking type mobile agricultural machine with automatic steering clutch connection state switching device - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is configured so that the direction of the control handle can be changed back and forth with respect to the aircraft body by rotating around the axis of a cylinder fixedly protruding upward from the mission case. In addition, a combination of a pair of operating side rotating bodies that are linked to a pair of left and right operating tools provided on the handle side and a pair of driven side rotating bodies that are linked to a pair of left and right steering clutches provided inside the transmission case, which are to be rotated integrally. can be automatically changed by the sliding of an interlocking member that can slide integrally with the operation shaft that slides back and forth as the handle changes the front and rear directions, and is equipped with a latch interlock state automatic switching mechanism. Regarding agricultural machinery.

Conventional technology A combination of a pair of operating-side rotating bodies that are linked to a pair of left and right operating tools provided on the handle side and a pair of driven-side rotating bodies that are linked to a pair of left and right steering clutches installed inside the transmission case, which should rotate integrally. The operating shaft for switching is provided on the handle frame near the top of the cylinder shaft that controls the rotational axis of the handle, and the cam that operates the operating shaft as the handle changes direction is installed in the transmission case at the bottom of the cylinder shaft. It was placed on the top.

(Jitsugan 53-12309 Sae (Jitsukai 55-37794)
(Refer to the publication) Problems that the invention aims to solve Since the cam and the operating shaft were installed relatively far apart, the interlocking member that moves the operating shaft by the cam action became long, making it necessary to use a thick interlocking member. If not, the operating shaft will not operate smoothly due to bending, etc., and if a thick interlocking member is used like this, it will be heavy and the friction at the pivot will be large, which will also prevent the operating shaft from operating smoothly. Furthermore, the interlocking member occupies a large space, resulting in an increase in the size of the entire device.

The present invention aims to solve the above-mentioned drawbacks by devising the arrangement positions of the operating shaft and the cam.

Means for solving the problem: disposing the operating shaft near the upper end of the cylindrical shaft;
A cam for sliding the operating shaft back and forth as the handle changes the forward and backward direction is provided near the top of the cylinder shaft.

Switches the combination of a pair of operating side rotating bodies linked to a pair of left and right operating tools provided on the operating handle side and a pair of driven side rotating bodies linked to a pair of left and right operating clutches installed inside the transmission case, which should rotate together. The operating axis and this operating axis are
The cam, which automatically operates in conjunction with changes in the front and back directions of the handle, is placed near the top of the cylinder shaft that controls the rotation axis of the handle.By placing them close to each other, the interlocking members between the cam and the operating shaft can be shortened. In this way, a small and lightweight interlocking member can be used.

Effects of the invention Since the interlocking members can be shortened, they are less affected by bending, etc., and thinner members can be used to achieve a smaller size and lighter weight.Furthermore, the friction of the pivot is reduced, allowing smooth operation of the operating shaft. In addition, it has become possible to achieve compactness by concentrating the components.

Hereinafter, an embodiment of the present invention will be explained based on the drawings. Fig. 1 shows a drive axle mounted on axles 12, 12' protruding from the lower part of a transmission case 1 in which a pair of left and right steering clutches 6°6' are installed. 13, 13' and a tilling rotary, and a driving unit 1 is installed on the front of the mission case 1.
A cylinder on which a frame 4 is mounted, a control handle 3 on which a frame 15 is fixedly connected, and a pair of left and right control levers 4, 4' (operating tools) are protruded upward from the mission case 1. A walking-type mobile agricultural machine for tillage is shown, which is attached to the axis 2 so that it can be changed forward and backward relative to the machine body by rotating around this cylinder axis (hereinafter referred to as the axis). Part structure is shown.

5 is the pair of operating levers 4.・An operation-side rotating body connected to one of the operating levers 4' through a wire 16; 5 is an operating-side rotating body connected to the other operating lever 4' through a wire 16'; and are arranged at intervals in the axial direction.

7 is a driven side rotating body 7' which is linked to one of the pair of steering clutches 6, □, 6' via a wire 17, and is linked to the other steering clutch 6' via a wire 17'. These are the driven rotating bodies, one of which 7 is located concentrically between the operating rotating bodies 5 and 5', and the other 7' is located between the operating rotating bodies 5 and 5' which are arranged in parallel. located concentrically on both sides of the

The above l is configured to automatically change the combination of the pair of operating rotors 5, 5' and the pair of driven rotors 7, 7' to be rotated as the handle 3 changes forward or backward. Possibly a latch interlock state automatic switching mechanism, which is separated from the switching device and the interlocking cam device that interlocks this with the three rotations of the handle.

The switching device connects the bundle 3 with rotating bodies 5°5', 7.
, 7' is fixedly connected to the bracket 18, which also serves as a positioning tool in the axial direction of the rotating bodies 5° 5', 7, 7'. The operating shaft 8 and the rotating bodies 5, 5'7, 7' are mounted so that they can only slide back and forth, and one of the operating rotating bodies 5 is attached by sliding against the rotating body in the axial direction. The driven side rotating body 7, 7'
The collar 9 can selectively engage and interlock with the other operating side rotating body 5' and the driven side rotating bodies 7' and 7 by sliding against the rotating body in the axial direction. A collar 9' that can be engaged and interlocked is interposed in a state where it can only rotate independently with respect to the operating shaft 8, so that by reciprocating sliding of the operating shaft 8,
The configuration is such that the driven side rotary bodies 7, 7', which are interlocked with the operating side rotary bodies 5, 5' via collars 9, 9', can be replaced.

In addition, color 9. Engagement protrusions 9a, 9a' protruding from 9'
Engagement interlocking grooves 5 of the rotating bodies 5, 5', 7, 7' that engage with the
a, 5a! 7a, 7a' are single rotating bodies 5, 5',
7゜7' is positioned in a straight line only when the rotating body 5 of the engaging protrusions 9a and 9a' is in the clutch-engaged rotational position.
, 5', 7, and 7'.

In the interlocking cam device, a cam 11 is provided on the fixed part, and a lever 19 is attached to the bracket 18, which is swing-operated around the operating shaft 8 by the cam 11 as the handle 3 rotates. A spring 20 for elastically contacting the cam 11 and a spring 20' for urging the operating shaft 8' in the = direction are provided, and a spring 20' for urging the operating shaft 8' in the = direction is provided, and a spring 20' is provided between the lever 19 and the operating shaft 8 for the swinging of the lever 19. Accompanied by the operation axis 8
The structure includes a cam structure 21 that slides the cam structure 21.

Thus, the cam 11 is formed on the upper end surface of the cylindrical shaft 2 in the axial direction.

Furthermore, between the base end portion of the handle 3 and the fixing portion, there are provided a detachable fixing pin 23 and a fixing engagement hole 24 for fixing the orientation of the handle 3.

FIG. 5 shows another embodiment, in which the cylinder shaft 2
A cam 11 is formed on the upper circumferential surface, and a cam follower 2 using a roller is in elastic contact with the cam 11 on the operating shaft 8.
2 are connected in series to constitute an interlocking cam device.

[Brief Description of the Drawings] The drawings show an embodiment of a walking type mobile agricultural machine with an automatic steering clutch engagement state switching device according to the present invention. Fig. 1 is an overall side view;
Fig. 2 is an enlarged partially cutaway side view of the main part, Figs. 3 and 4 are enlarged cross-sectional plan views of the main part showing the switching operation state, and Fig. 5 is an enlarged view of the main part showing another embodiment. FIG. 1...Mission case, 2...M axis, 3---Control handle, 4, 4'...
Operating tool, 5, 5'... Operating side rotating body, 6, 6'
...Steering clutch, 7゜7'...Driven rotating body, 8...Operation shaft, 9,9'...
- Interlocking member, 10...Clutch linkage state automatic switching mechanism, 11...Cam.

Claims (1)

[Scope of utility model registration request] The control handle 3 is configured to be able to change its direction forward and backward with respect to the aircraft by rotating around two cylindrical shafts fixedly protruding upward from the mission case 1. A pair of operating side rotating bodies 5, 5' linked to the operating tool 4.4', and a pair of driven side rotating bodies 7°7' linked to a pair of left and right steering clutches 6.6' provided inside the transmission case 1. The combination of integral rotation of the handle 3 can be automatically changed by sliding the interlocking members 9, 9' that can integrally slide with respect to the operating shaft 8 that slides back and forth as the handle 3 changes the front and rear directions. In a walk-behind mobile agricultural machine equipped with an automatic latch linkage state switching mechanism 10, the operating shaft 8 is disposed near the upper end of the cylindrical shaft 2, and the operating shaft 8 is moved as the handle 3 changes back and forth. A walk-behind mobile agricultural machine with an automatic steering clutch engagement state switching device, characterized in that a cam 11 for reciprocating sliding is provided near the top of the cylindrical shaft 2.