JPH1130136A - Engine stop operating device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve engine stop operability by operating a stop lever of an engine stop device in stop action by a motor-driven actuator by 'OFF' operation of a key switch, and setting an engine stop position for putting the stop lever in stop operation, in an operating area of an accelerator lever. SOLUTION: A speed governor 8 and an engine stop device 9 are provided, and a key switch 10 and an accelerator lever 11 are fitted to a riding operating part. A speed governing release wire 12 is provided to interlock the accelerator lever 11 with a speed governing lever 8A so that the speed governing lever 8A of the speed governor 8 is put in accelerating operation in association with the accelerating operation of the accelerator lever 11. A solenoid 13 is provided to put a stop lever 9A of the engine stop device 9 in stop operation by 'OFF' operation of a key switch 10, and the accelerator lever 11 is interlocked with the stop lever 9A through a stop release wire 14 so that the stop lever 9A is put in stop operation in association with operation of the accelerator lever 11 into an engine stop position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine stop operation device for a working machine such as a combine machine, and more particularly, to an electric actuator for stopping a stop lever of an engine stop device, and turning off the electric actuator by turning off a key switch. The present invention relates to a device configured to stop an engine.

[0002]

2. Description of the Related Art Conventionally, an engine stop device for stopping an operation of a stop lever is provided so that the engine can be stopped regardless of whether a key switch operation or an engine stop device operation is performed. Was trying to increase.

[0003]

However, according to the above-mentioned conventional technique, since the installation position and operation method of the engine stop are not as familiar to the operator as the key switch, the engine is operated by operating the engine stop. There was room for improvement because the operability of stopping the engine could not be improved despite the provision of an engine stop, as there was a tendency for stoppage to be erratic.

An object of the present invention is to improve the operability of stopping the engine.

[0005]

The features, functions and effects of the first aspect of the present invention are as follows.

[Characteristics] An engine stop operating device for a working machine, comprising an electric actuator for stopping an operation of a stop lever of an engine stopping device, and operating the engine to stop the electric actuator by turning off a key switch. Thus, an engine stop position for stopping the stop lever is set in the operation range of the accelerator lever.

[0007] According to the first aspect of the present invention, the stop lever is operated to stop in the operation range of the accelerator lever which is familiar to the operator about the installation position and the operation method or the like, or more than the key switch. By setting the engine stop position to be used, the accelerator lever is also used as an engine stop, so that the engine stop operation using the accelerator lever can be performed in the same state as the engine stop operation using the key switch, and the engine stop operation using the accelerator lever can be performed. It can be done without delay.

[Effect] Therefore, according to the first aspect of the present invention, the engine can be stopped by performing both the key switch operation and the accelerator lever operation with good operability, thereby improving the operability of stopping the engine. Now you can do things.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention,
The accelerator lever is mechanically interlocked with the stop lever via an interlocking member so that the stop lever is stopped when the accelerator lever is moved to the engine stop position.

[Operation] According to the second aspect of the present invention, since the accelerator lever is mechanically linked with the stop lever,
Even if the electric actuator does not operate to stop the engine by turning off the key switch due to electrical trouble,
The engine can be stopped by operating the accelerator lever to the engine stop position.

[Effect] Therefore, according to the second aspect of the present invention, the engine can be stopped reliably.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a combine, which is an example of a working machine, cuts planted grain culms at a front portion of a self-propelled machine body 2 provided with a crawler traveling device 1 and conveys it rearward. The mowing unit 3 is connected so as to be able to move up and down freely.
And a threshing device 4 for threshing the transported grain culm from the cutting unit 3
And a boarding operation unit 5 and a tank 6 for storing threshing grains.

As shown in FIG. 2, the operating device for the diesel engine 7 provided in the self-propelled body 2 is provided with a speed control device 8 for adjusting the number of revolutions of the diesel engine 7 and an engine stop device 9, and The operation unit 5 includes a key switch 10 and a manually operated swingable accelerator lever 11.
And a speed-control release wire 12 for interlocking the accelerator lever 11 with the speed-control lever 8A so that the speed-control lever 8A of the speed-control device 8 operates at a speed increase with the speed-up operation of the accelerator lever 11. Provided, the key switch 1
A solenoid 13 which is an electric actuator for stopping the engine by turning off the engine 0 to stop the stop lever 9A of the engine stop device 9 is provided, and a speed increase range from an idling position P1 in the operation range of the accelerator lever 11 is provided. The end opposite to the part A is set at an engine stop position PS, and the engine stop position PS of the accelerator lever 11 is set.
The accelerator lever 11 is mechanically linked to the stop lever 9A via a stop release wire 14, which is an example of an interlocking member, so that the stop lever 9A is stopped by the operation of the stop lever 9A. That is, the diesel engine 7 is stopped by turning off the key switch 10 from the engine stop device 9, the key switch 10, the accelerator lever 11, the solenoid 13, and the stop release wire 14,
Further, an engine stop operation device is configured to stop the diesel engine 7 by operating the accelerator lever 11 to the engine stop position PS. The interlocking connection between the accelerator lever 11 and the release release wire 14 is formed with a slot 15 which is a flexible portion that does not transmit the operation of the accelerator lever 11 in the speed increasing region A to the release release wire 14. ing. As shown in FIG. 3, the operation guide groove 16 of the accelerator lever 11 is formed in a crank shape that is bent at the idling position P1. In other words, when the accelerator lever 11 is returned from the speed increasing region A to the idling position P1, the accelerator lever 11 comes into contact with a groove forming plate portion forming a bent portion of the operation guide groove 16, whereby the accelerator lever 11 is inadvertently prepared. The movement to the engine stop position PS side is prevented. The accelerator lever 11 is urged to operate toward the speed increasing region A in the axial direction.

As shown in FIG. 4, power is transmitted from the diesel engine 7 to the traveling transmission case 18 and the threshing apparatus 4 via a belt transmission, respectively. Three belt retainers 24 are provided to prevent the transmission belts 22 and 23 from coming off the input pulleys 20 and 21 of each belt transmission mounted on the belt transmission 19. As shown in FIGS. 5A and 5B, the belt presser 24 is attached to a bracket 25 bolted to the diesel engine 7 with bolts. What is located at the crossing portion when viewed in the axial direction acts on both transmission belts 22 and 23. Each belt retainer 24 is attached to the bracket 25 so as to be adjustable in position by forming a bolt insertion hole 26 as an elongated hole.

In this belt holding structure, when the bracket 25 is attached to the diesel engine 7, the respective belt holders 24 are adjusted in position so as to appropriately act on both the transmission belts 22 and 23, and are attached. In this case, the bracket 25 is removed from the diesel engine 7, and after replacement, the bracket 25 is attached as it is, thereby positioning each belt holder 24 in the operation position. Therefore, for example, the belt holder 24 can be easily and quickly attached and detached with a reduced number of steps as compared with a case where the belt replacement is performed by attaching and detaching each of the belt holders 24 to and from the bracket 25.

[Alternative Embodiment] In the above embodiment, the accelerator lever 11 is mechanically linked with the stop lever 9A, and the engine 7 is stopped by operating the accelerator lever 11 to the engine stop position PS. When the accelerator lever 11 is moved to the engine stop position PS, the solenoid 1
The engine 7 may be stopped by operating the engine 3 or another electric actuator to stop the engine.

In the above embodiment, the solenoid is shown as the electric actuator 13, but the electric actuator 13 may be another type such as an electric cylinder.

In the above embodiment, the release wire is shown as the interlocking member 14. However, the interlocking member 14 may be a link or a combination of a link and a wire.

In the above embodiment, a diesel engine is shown as the engine 7, but the engine 7 may be a gasoline engine.

In the above embodiment, an example of application to a combine has been described, but the present invention can be applied to various working machines such as a rice transplanter and a tractor.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a configuration diagram of an engine operation device.

FIG. 3 is a plan view of a guide groove of an accelerator lever.

FIG. 4 is a side view of the belt transmission.

FIG. 5 is a cutaway front view of a belt retainer mounting portion and an exploded perspective view of the belt retainer.

[Explanation of symbols]

 9 Engine stop device 9A Stop lever 10 Key switch 13 Electric actuator 14 Interlocking member PS Engine stop position

Claims (2)

[Claims] 1. An engine stop operating device for a working machine, comprising an electric actuator for stopping an operation of a stop lever of an engine stop device, wherein the operation of the engine is stopped by turning off a key switch. An engine stop operating device for a working machine, wherein an engine stop position for stopping the stop lever is set in an operation area of an accelerator lever. 2. The accelerator lever according to claim 1, wherein the accelerator lever is mechanically interlocked with the stop lever via an interlocking member such that the stop lever is stopped when the accelerator lever is moved to the engine stop position. Engine stop operation device for work equipment.