JPH0522429Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention transmits power from an engine supported by an elastic mount on the frame to a working device fixed to the machine body through a transmission body. The present invention relates to the structure of an engine section that can be configured to be able to operate, and particularly relates to its vibration isolation structure.

[Conventional technology]

In the structure of such an engine section, the engine is supported by the fuselage via an elastic mount in order to dampen engine vibrations transmitted to the fuselage.
In addition, in order to prevent engine vibrations from being transmitted to the working equipment fixed to the aircraft body and causing transmission problems and damage to parts, the engine and working equipment should be connected by a winding transmission body such as a belt with excellent buffering properties. It is linked.

[Problem that the invention attempts to solve]

However, even with the structure of the engine section designed to prevent vibrations, sufficient measures have not been taken to prevent vibrations that occur when the clutch of the working device is engaged. In other words, the engine is supported so that it can vibrate relative to the machine body, so when the clutch is engaged and torque transmission begins, the winding transmission body pulls the engine toward the work equipment due to the reaction force. This has caused various problems, such as large vibrations that can interfere with other members, and in the case of belts, the belt clutch may slip momentarily and become inoperable.

The present invention focuses on these drawbacks and aims to improve the above-mentioned drawbacks by preventing as much as possible the vibrations that occur when the clutch is engaged.

[Means for solving problems]

The characteristic configuration of the present invention, which has been made to achieve the above object, is that a restraining device that can be expanded and contracted and locked is interposed between the engine and a fixed part of the fuselage, and that transmission of power to the operating part of the restraining device and the working device is provided. The restraint device is linked with a clutch provided in the system, and is configured to be able to expand and contract at the clutch engagement position and the clutch disengagement position of the clutch operation tool, and to lock at an intermediate area between both positions, and the following features: Actions like
be effective.

[Operation] In other words, when the clutch operating tool is switched from the clutch engaged position to the clutch disengaged position, the operating section linked to the clutch operating tool switches the check device from the telescopic state to the locked state in the intermediate region between the two positions, and the engine is stopped. Since the positional relationship between the engine and the fixed part of the machine body is fixed, even if engine power starts to be transmitted to the work equipment, the reaction force will not pull the engine toward the work equipment, and this will cause the clutch to The vibrations that were occurring when turning on are also eliminated. Then, when the clutch operating tool is switched to the engaged position, the operating section switches the restraint device from the locked state to a telescopic state again, thereby putting the engine into a state in which it can freely vibrate. In short, when the load is unstable at the beginning of clutch engagement, the restraining device is locked to prevent the engine from being drawn toward the working equipment, and the engine is fixed to the fixed part of the machine body.

[Effect of idea]

Therefore, according to the present invention, it is possible to suppress the vibration that occurs when the clutch is engaged, and to improve problems such as the engine interfering with other parts and the clutch transmission failure.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, a threshing device 6 is mounted on a loading platform 4 disposed in front of an engine section 2 of a traveling type transport vehicle having a crawler traveling device 1, an engine section 2, a control section 3, etc. The harvester is configured by installing the power input from 2.

In order to enable the driving of the threshing device 6 and the crawler traveling device 1, as shown in FIGS. 1 and 2,
The output shaft 10 of the engine 9 is attached to the frame portions 7a and 7b of the self-propelled machine via a plurality of elastic mounts 8 made of rubber so as to reduce transmitted vibrations, and the threshing machine body 11 is attached to the self-propelled machine. The belt tension clutch 13 for the threshing section is wound with a transmission belt 14 which is also used to connect the threshing section drive shaft to the winnowing drive shaft 12 which is also used for the threshing section.
and a transmission case M for the processing device and for traveling.
A power transmission belt 17 which also serves as a belt tension main clutch 16 is wound around the input shaft 15 of the belt tension main clutch 16.

To construct the belt tension clutch 13 for the threshing section, an arm 20 is fitted onto the shaft 19 of a clutch lever 18 as a clutch operating tool that can swing back and forth, and the transmission belt 14 is attached to the tip of the arm 20.
The tension pulley 21 for energizing is pivoted, and when the clutch lever 18 is swung forward to the clutch engaged position ON, the clutch 13 is engaged, and then swung back to the clutch disengaged position OFF. Then, the clutch 13 is disengaged.

A restraining device 22 that can be expanded and contracted and locked between the frame portion 7a located at the front and the engine 9.
The restraining device 22 can be switched between an extendable and retractable state and a locked state by swinging the operating portion 23 thereof. Further, the shaft 19 of the clutch lever 18 is extended, and a cam 24 having a disk shape and a convex portion 24a around the peripheral portion is fixed to the tip thereof, and when the cam 24 rotates, the convex portion 24
a is in contact with the operating section 23.

As shown in FIGS. 8 and 4, the check device 22 includes a lock 27 slidably inserted into a cylindrical case member 26 into which a spring 25 is fitted, and one end of the spring 25 connected to an operating section. 23, and the other end is fixed to the case member 26. When the operation part 23 is swung, the winding radius of the spring 25 becomes smaller and the spring 2
5 is wrapped around the rod 27 and crimped to the rod 27.
The sliding is controlled in a locked state.

The restraint device 22 can be switched between an extendable state and a locked state by rotating the cam 24 and moving the convex portion 24.
A is brought into contact with the operating section 23, and the operating section 23 is swung. That is, as shown in FIG. 5, the clutch lever 18 is at the clutch release position.
When it is in the OFF and clutch engaged position ON,
The convex portion 24a does not come into contact with the operating portion 23, so the check device 22 is in a telescopic state, and when the clutch lever 18 is in the intermediate region between the clutch engaged position ON and the clutch disengaged position OFF, Convex portion 24
a comes into contact with the operating section 23 and the operating section 23 swings,
The restraining device 22 becomes locked.

As described above, in the present invention, the restraining device 22 is used to suppress vibrations caused by the torque reaction force of the engine 9 that occurs when the belt tension clutch 13 for the threshing section is placed in the engaged state.

Alternative Embodiments The present invention may be applied to belt tension main clutches 16 and other work equipment clutches. or,
A chain or the like may be used as the winding transmission body 14.

The restraining device 22 that can be expanded and contracted is as follows.
In addition to using a mechanical type as described above, for example, a hydraulically lockable cylinder may also be used.

Note that although numbers are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the engine part according to the present invention. Figure 1 is a plan view, Figure 2 is a side view, and Figure 3 is a side view.
4 is a longitudinal sectional side view of the check device, FIG. 4 is a view taken along the line -- in FIG. 6... Working device, 7a, 7b... Frame part, 8... Elastic mount, 9... Engine, 13
...Clutch, 14...Windling transmission body, 22...
Check device, 23...operation unit, ON...clutch engaged position, OFF...clutch disengaged position.

Claims (1)

[Scope of utility model registration request] The structure of the engine part is configured such that the power of the engine 9 supported by elastic mounts 8 on the frame parts 7a and 7b can be transmitted to the working device 6 fixed to the machine body through the transmission body 14. A restraint device 22 that can be expanded and contracted and locked is interposed between the engine 9 and a fixed part of the machine body, and an operating part 23 of the restraint device 22 and a clutch 13 provided in the transmission system to the working device 6 are interposed. The structure of the engine section is such that the restraint device 22 can be extended and retracted when the clutch operating tool 18 is in the ON and OFF clutched positions, and locked in an intermediate range between ON and OFF positions.