JPS6234863Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an operating device for a guide for preventing crawler disengagement in a mobile agricultural machine.

In other words, when the aircraft is traveling straight, the guides for preventing both crawlers from coming off do not come into contact with the crawlers, which prevents increased wear on the crawlers, and when the aircraft changes direction or turns, the side clutches must be disengaged. To effectively prevent the crawler from coming off by bringing the guide into contact only with the crawler on the inner side of the turn, which is likely to come off, and to provide a system that can be suitably implemented.

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

Both rubber crawlers A1 and A2 installed in parallel on both sides of the lower part of the combine harvester C are connected to the front and rear drive sprockets 4.
The driver's cab 8
The drive sprockets 4 of both crawlers A1 and A2 can be operated by means of both side clutch levers 1a and 1b disposed on the control column 9 of the crawler, so that the side clutches can be operated in the same manner as in the conventional structure.

Long rod crawler guides 2a and 2b that can move up and down between the protrusions 10 and 10 protruding on both sides of the widthwise center of the crawlers are installed above the ground-contacting inner circumferential surfaces of both crawlers A1 and A2, respectively. , 4
Integral rods 11, 12, 13 are extended upward from the center and both ends of both crawler guides 2a, 2b, which are formed long so as to span the track wheels 7.
The rods 12 and 13 are slidably inserted into the support cylinders 15 and 16 vertically installed through the piston rod 19 which projects downward from the hydraulic cylinder 18 which is installed vertically through the truck frame 6 through the bracket 17. When the lower part of the rod 11 is connected to the rod 11 via the connector 20 and the crawler guides 2a and 2b are respectively lowered by the operation of the hydraulic cylinder 18, the crawler A between the two protrusions 10 and 10 is lowered.
1 and A2 so that they come into contact with the inner circumferential surfaces, and are arranged so that when they are moved upward, they separate upward.

Further, control parts 21, 21 are installed near both side clutch levers 1a, 1b, respectively, and when both side clutch levers 1a, 1b are operated to engage, hydraulic cylinders 18, 18 are actuated, and crawler guides 2a, 2b are actuated. They are arranged so that they can be operated in conjunction with each other so that they can each be moved upward, and can also be moved downward when they are turned off.

Therefore, both side clutch levers 1a, 1
When b is operated to enter and the aircraft is moving straight, the hydraulic cylinders 18, 18 are activated as shown in each figure.
Therefore, the crawler guides 2a and 2b are crawler A.
The crawler guides 2a, 2b are lifted upward away from the inner circumferential surfaces of the crawlers A1, A2, and the crawler guides 2a, 2b are not in contact with the inner circumferential surfaces of the crawlers A1, A2.

When turning the aircraft to the left, operate the side clutch lever 1a to disengage the left crawler A.
1, and when changing direction to the right side, operate the side clutch lever 1b to disengage the clutch of the right crawler A2, but the hydraulic cylinder of the crawler on the side that disengages the side clutch in this way 18 is activated to move one of the crawler guides 2a and 2b downward, and the crawler guide comes into contact with the inner circumferential surface of the crawler between the protrusions 10 and 10, as shown by the imaginary line in FIGS. 4 and 5. In this state, an action to prevent the crawler from coming off is performed.

In addition, when the side clutch lever is returned to the engaged position,
The hydraulic cylinder 18 operates in reverse and the crawler guides 2a, 2b move upward again.

In this way, the present invention has crawler guides for preventing the crawlers from coming off that are movable up and down on the ground-contacting inner circumferential surfaces of both left and right crawlers, each of which can be operated by a side clutch lever. Since the crawler guide on the crawler side that is used for cutting is configured to be able to move downward as the side clutch lever is turned, the crawler guide will move upward when the aircraft is moving straight. Increased wear due to contact with the crawler can be prevented, and when the aircraft changes direction or turns, the crawler guide can be effectively contacted only with the crawler that tends to come off on the inside of the turn where the side clutch is disengaged. The crawler can be prevented from coming off, the crawler guide can be moved up and down by operating the side clutch lever without forgetting or making a mistake, and the crawler guide can be operated reliably and satisfactorily, and has features that can be carried out suitably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the traveling section, Fig. 2 is an explanatory diagram showing a plan view, Fig. 3 is a side view of the main part, and Figs. A vertical cross-sectional view of the portion shown in Figure 1 is shown. 1a, 1b...Side clutch lever, A1,
A2...Crawler, 2a, 2b...Crawler guide.

Claims (1)

[Scope of utility model registration request] The side clutches can be operated by side clutch levers. Both left and right crawlers are equipped with crawler guides that can be moved up and down to prevent the crawlers from coming off on the ground-contacting inner circumferential surfaces of the crawlers. An operating device for a guide for preventing crawler disengagement in a mobile agricultural machine, characterized in that the guide is installed and configured to be freely interlocked so that the guide moves downward in accordance with the cutting operation of a side clutch lever.