JPS6245944Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a clutch interlocking locking device for a traveling clutch pedal suitably used in combine harvesters and the like.

Recently, as seen in Japanese Utility Model Publication No. 50-41144, the operator's feet are placed in the operating path of a clutch of a reaping and threshing device that can be operated on and off by a manual lever provided at the operator's hand. However, a traveling clutch pedal is provided that is connected to the clutch so that the clutch can be engaged, and only when this pedal is depressed.
There is a safety clutch that can temporarily disengage the reaping and threshing clutches and the running clutch without having any effect on the manual lever.

However, according to this structure, when the pedal is released, the reaping and threshing clutch and the travel clutch are re-engaged, so if the main gear shift lever is set to the neutral position when the pedal is depressed and the user forgets to disengage the manual lever, If you release the depression, the machine will not move forward even though the traveling clutch is engaged, and the reaping clutch will be engaged even though the machine is stopped, so the reaping and grain culm conveying devices will operate. There were problems such as wrapping and shedding due to the scraping and conveyance of the culm in this peripheral area.

Therefore, in this invention, a lock lever is provided that can be moved away from or near the travel clutch pedal, and when the reaping clutch lever is engaged, the lock lever approaches the lockable position, and when this pedal is depressed, the pedal is moved to the depressed position. To solve the above-mentioned drawbacks, the present invention provides a clutch interlocking locking device for a travel clutch pedal, which is configured to be lockable by pressing the pedal and can operate a reaping clutch, a traveling clutch, and a reaping clutch lever, respectively, in conjunction with the depression lock.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

FIG. 1 shows a combine harvester in which a clutch interlocking lock device A for a traveling clutch pedal according to the present invention is implemented. A reaping section 5 consisting of a reaping device, a grain culm conveying device, etc. is installed in front of it, and the power of the engine 3 is supplied to the traveling and reaping belts 8 and 9 and the traveling and reaping tensions that touch and separate from each belt. pulley 1
A traveling speed 1 is transmitted to the reaping section 5 through a traveling clutch 6 and a reaping clutch 7, each of which has a speed of 0, 11, etc., respectively.

Further, the on/off operation of the traveling clutch 6 is performed by a traveling tension arm 13 which has the traveling tension pulley 10 pivoted on the tip thereof and which is constantly biased toward the clutch engagement side by a traveling clutch spring 12.
and a travel clutch pedal 15 which is disposed below the control section 4 and is operable to swing around an axis and which is biased upward to a predetermined position by a pedal spring 14.
are connected by a wire 16, and can be operated to disengage the clutch by depressing this pedal, and when the foot is removed from the pedal and the pedal is returned to a predetermined position above by a spring force, the clutch is disengaged. It is configured so that it can be operated automatically from the state to the enter state.

On the other hand, the on/off operation of the reaping clutch 7 is performed by switching the reaping clutch lever 17, which is disposed at the front of the control unit 4 and is capable of swinging on/off around its axis, by forward swinging switching, that is, on/off operation (ON). As a result, the reaping tension arm 19, which has the reaping tension pulley 11 pivoted at its tip and is urged toward the clutch cutting side by the reaping clutch spring 18, is forcibly swung via a connecting member 20 such as a wire. The clutch can be operated from the engaged state to the disengaged state by switching the reaping clutch lever backward, that is, by turning it off (OFF).

By the way, this clutch interlocking lock device A is
A lock lever 21 is provided which is pivoted at an appropriate position on the machine so as to be able to move toward and away from the pedal 15, and this lock lever and the reaping clutch lever 17 are connected by a connecting member 23 such as a wire via a locking spring 22. A spacing spring 24 is interposed between adjacent machines to act in a direction to move the reaping clutch lever away from the pedal to a required spacing position shown by the two-dot chain line in FIG. 2 when the reaping clutch lever is disengaged. According to this, when the reaping clutch lever 17 is engaged, the reaping clutch 7 is switched to the engaged state, and at the same time, the locking lever, which is in the separated position, is moved through the locking spring 22 against the separating spring 24, and the pedal 15 is moved. (the second
(See solid line in the figure). When the pedal is in this lockable position, when the pedal is depressed (more precisely, when the pedal is quickly released), the locking part 20a formed in the lower part of the lock lever is moved by the force of the locking spring 21 to the pedal depression part 15a. The pedal is fitted into and locked by a locking body 25 made of a round bar or the like fixed to the pedal, so that the pedal can be locked in the depressed position (see Fig. 3).

On the other hand, the pedal and the reaping tension arm 19 are connected by a wire 26, so that the reaping clutch and the above-mentioned traveling clutch 6 can be switched to the disengaged state respectively in conjunction with the depression and locking of the pedal.

According to the above configuration, first, the main shift lever 26 of the transmission (not shown) is set to the neutral position, the reaping clutch lever 17 is operated to disengage the reaping clutch 7, and the lock lever 2
1 away from the pedal to the distance position, and then move the engine 3
start. Then, when the main gear shift lever 26 is operated to drive the traveling device 1 at a desired traveling speed to move the aircraft forward, and the aircraft is to be stopped, the traveling clutch 6 is activated via the wire 16 by depressing the pedal. and the driving of the traveling gear is stopped.
The pedal depressed at this time was lock lever 21.
As mentioned above, it is not locked because it is located away from the pedal.

Next, when the foot is removed from the pedal, the traveling clutch 6 is re-engaged, and the reaping clutch lever 17 is engaged while moving the machine forward, the lock lever 21 is switched to the lockable position and at the same time, the reaping clutch 7 is engaged. The engine power is also transmitted to the reaping section 5, which moves forward by sequentially reaping the planted grain culms, and the reaped grain culms are conveyed toward the threshing device 2. When it is desired to stop the forward reaping operation, the pedal is locked by the lock lever 21 at the depressed position by depressing the pedal, and in conjunction with this depressing lock, both the travel clutch 6 and the reaping clutch 7 are switched to the disengaged state. ,
The reaping clutch lever 17 is also automatically disconnected via the reaping tension arm 19. Next, in order to release this lock, the locking body 25 is
When the pedal is depressed slightly until it disengages from 1a, the reaping clutch lever moves away from the pedal due to the action of the separation spring 24 (because the reaping clutch lever is automatically disconnected when it is locked), and the reaping operation is released. This will return to the state where only the aircraft moves forward, which is not performed. However, it is also possible to turn on and off only the reaping clutch lever without using the pedals while moving the machine forward.

Furthermore, by the automatic disconnection operation of the reaping clutch lever 17 that is linked to the above-mentioned depression and locking of the pedal, the spacing spring 24 acts in the direction of moving the lock lever away from the pedal, so that the reaping clutch lever 17 can be locked by depression. In order to do this, the action of the spacing spring 24 is designed to be delayed. Further, when the lock is locked, the lock structure is formed to have a locking force that prevents the lock from being released by the separating spring force.

As is clear from the above explanation, according to this invention, when the reaping clutch lever 17 is engaged and the pedal 15 is not used, it is used normally; Lock lever 2 at the same time as the state
1 to the lockable position, move the reaping clutch 6 forward in this lockable position, and depress the pedal at the desired time to lock the pedal in the depressed position with the lock lever, thereby preventing traveling and reaping clutch 6. , 7 can be set to the disengaged state, and the reaping clutch lever can also be automatically disengaged. Therefore, even if the main gear shift lever 26 is set to the neutral position when this lock is released, the reaping clutch and the reaping clutch lever will not be disengaged. The machine and the reaping and transporting equipment can be maintained in a stopped state, so when the pedal is kept depressed during forward reaping work, as in the past,
Once the traveling clutch and the reaping clutch are disengaged, and while the clutch is being depressed, only the main gear shift lever is switched to the neutral position, forgetting to disengage the reaping clutch lever, and releasing the pedal, so that the reaping and conveying device can be operated while the machine is stopped. It is possible to avoid the situation where the culm is activated and the culm is raked in, resulting in wrapping and shedding.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the main parts of a combine harvester embodying this invention, FIG. 2 is an explanatory view of this invention, and FIG. 3 is an explanatory view showing the locked state of the traveling clutch pedal. Code, 6...Traveling clutch, 7...Reaping clutch, 15...Traveling clutch pedal, 17...Reaping clutch lever, 21...Lock lever, 22...
...Lock spring, 24...Separation spring.

Claims (1)

[Scope of utility model registration request] A lock lever 21 is provided so as to be movable toward and away from the traveling clutch pedal 15, and this lock lever is interlocked with a reaping clutch lever 17 which is interlocked with the reaping clutch 7 and can be operated on and off via a locking spring 22. lock lever 21
The clutch lever 17 is located between the
When the lock lever 21 is turned off, the lock lever 21 is
5, and when the reaping clutch 7 is switched to the engaged state when the clutch lever 17 is engaged, the lock lever 21 is simultaneously moved against the separating spring 24 to move the reaping clutch 7 to the engaged state. The pedal 15 is switched to a lockable position where it approaches or contacts the pedal 15, and when the pedal 15 is in the lockable position, the pedal 15 can be locked in the depressed position by the lock lever 21 by depressing the pedal 15. The traveling clutch 6 and the reaping clutch 7 are interlocked and connected to the pedal 15 so as to be able to be switched to the disengaged state, and the clutch lever 17 is interlocked and connected via the reaping clutch 7 so that the clutch lever 17 can be automatically disengaged. A clutch interlocking lock device for a traveling clutch pedal, which is characterized by: