JPS5926490B2 - Travel control device for mobile vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to a mobile vehicle such as a combine harvester, which is equipped with a main transmission, a sub-transmission, and a main clutch that automatically operates to a clutch disengaged state by using input rotational force through the action of a cam. The present invention relates to a traveling operation device.

Generally, when changing the traveling speed of a moving vehicle, it is necessary to disengage a main clutch installed in a transmission system to the traveling device before operating a gear shift lever.

In this way, the present invention simplifies the important operation of the main clutch necessary for shifting and the operation for changing speed by linking it to the shifting operation, and the overall configuration is simple, making it extremely convenient to use. The object of the present invention is to provide a travel operation device for a mobile vehicle that is equipped with a mobile vehicle.

The present invention has the following structural features.

That is, in the traveling operation device for a mobile vehicle described at the beginning of the detailed description, the first swinging body swings in conjunction with the shift operation of the main shift lever, and the first swing body swings in conjunction with the shift operation of the sub-transmission device. Two rocking bodies, a cam actuating piece for reversibly switching the cam to the main clutch automatic disconnection operating state, and a connecting device connecting the first and second rocking bodies and the cam actuating piece; The tool is composed of a release wire consisting of an inner wire and an outer wire,
One end of the inner wire is connected to one of the first and second rocking bodies, and one end of the outer wire is connected to the other, and the other end of the inner wire is connected to the cam operating piece, and the other end of the outer wire is connected to the fuselage side. The cam actuating piece is configured to be connected to a fixed portion of the main clutch, respectively, and to operate the cam actuating piece to the main clutch disengagement side by a pulling action of the inner wire or outer wire when the main gear shift lever or the auxiliary gear shift device is operated to a neutral position. Features.

According to the present invention, even if either the main transmission or the sub-transmission is operated to change gears, the main clutch is automatically disengaged in conjunction with the operation of the transmission to the neutral position, and then the desired transmission is performed. When the gear shift operation is completed, the main clutch is automatically returned to the engaged state. This simplifies operations related to driving speed changes by omitting the special operation required to engage and disengage the main clutch when shifting gears. This also prevents erroneous operations.

Furthermore, by effectively utilizing the fact that the main clutch is a so-called self-contained clutch that automatically disengages the clutch by the action of a cam and rotational force, the main clutch can be operated to the neutral position by operating the main shift lever or sub-transmission device to the neutral position. , the main clutch is disengaged and operated simply by changing the cam operating piece relative to the cam to a position where the main clutch is automatically disengaged, making it possible to operate the main clutch in conjunction with the gear shift operation. However, compared to a method in which the main clutch is directly disconnected against the biasing force in the engaging direction, it has the effect of suppressing an increase in shift operation resistance as much as possible.

Furthermore, since the structure of the release wire is effectively used to link the main shift lever and the sub-transmission device to the cam actuating piece, the structure is very simple.

In this way, the present invention simplifies and rationalizes the operation, suppresses the increase in operating resistance that occurs due to this, and synergistically simplifies the configuration, thereby making it possible to perform two operations: the gear shift operation and the main latch-off operation. It has now become possible to perform gear shifting operations, which are required, easily and satisfactorily with very light operability.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a combine harvester (an example of a moving vehicle) in which a reaping device 9 is attached to the front part of the main machine, which is equipped with a crawler 6, a threshing device 7, and a passenger driving section 8, so as to be able to swing up and down. Figure 2 shows
The concrete structure of the main clutch 2 interposed in the transmission system to the crawler 6 is shown, and FIG. 3 shows the traveling operation device of the combine harvester.

The main clutch 2 is provided with a multi-disc clutch mechanism 13 which is biased into an engaged state by a spring 12 between a driven shaft 10 and an input pulley 11 which is rotatably attached thereto. An operating member 15 that presses and moves the operated member 14 movable in the axial direction of the multi-disc clutch mechanism 13 to an engaged state against bias by rotating and moving laterally. is provided between the operating member 15 and the fixed part 16, and when a rotational force in one direction is applied to the operating member 15, the operating member 15 is pushed out and moved in the axial direction and laterally by this rotational force. A cam mechanism 17 is provided, and the operating member 15 is rotated to connect and disconnect transmission.

In addition, the main clutch 2 is provided with a cam 1 protruding in the axial direction at a suitable position in the circumferential direction of the operated member 140, and the cam 10 is attached to the operating member 15 from the radial direction of rotation by swinging. When the cam 1 protrudes from the rotation path and rotates, the cam 1 rides on the cam 1.
In other words, there is an operating position in which the operated member 14 is moved to the cut state against the bias, and a retracted position outside the cam rotation path.
A cam actuating piece 4 which can be switched to a non-working position in which it does not act on the cam 1 is attached, and by switching the cam actuating piece 4 to an active position, it is configured to automatically operate to the cut state with input rotational force. .

The cam actuating piece 4 is biased by a spring 18 to a non-operating position.

As shown in FIG. 4, the travel operating device swings around a neutral position N (the speed change lever 3 moves as the shift lever 3 moves along an H-shaped path) with respect to the main transmission. A rocking piece 19 that engages and interlocks with the rocking piece 19
A first oscillating body 20 that oscillates in conjunction with the oscillation of the oscillating piece 19 so that the first oscillating body 20 is in the first attitude when the oscillating piece 19 is in the shift position and is in the second attitude when the oscillating piece 19 is in the neutral position N. A swing operation piece 22 for changing the position of the shift fork 21 of the sub-transmission device capable of shifting into two high and low gears is in the first position when it is in the gear shift position, and the swing operation piece 22 is in a neutral position in the middle of the gear shift. A second swinging body 23 is provided which is linked to the swinging of the swinging operation piece 22 so that the other end of the inner wire 25 of the release wire 24 linked to the cam operating piece 4 of the main clutch 2 is in the second position. , the second rocking body 2 is configured such that when the second rocking body 23 is in the first position, the cam actuating piece 4 is in the non-operating position, and when the second rocking body 23 is in the second position, the cam actuating piece 4 is in the working position.
3, the outer wire of the release wire 24 is divided into two, and one divided outer wire 26 is connected to the cam actuating piece 4 in the non-acting position when the first swinging body 20 is in the first position, and in the second position. The cam operating piece 4 is connected to the first rocking body 20 so that it is in the operating position at some time.

In other words, the traveling operation device automatically switches the main clutch 2 to the disengaged state in conjunction with the operation of the shift lever 3 to the neutral position N or the operation of the sub-transmission device to the neutral state, and also automatically switches the shift lever 3 to the neutral state. The main clutch 2 is configured to automatically switch to the engaged state in conjunction with the operation to the shift position N or the operation of the sub-transmission device to the shift state.

The interlocking mechanism between the swinging piece 19 and the first swinging body 20 is composed of a cam 27 and a roller 28, and the interlocking mechanism between the swinging operation piece 22 and the second swinging body 23 is also composed of a cam 29 and a roller 28. It is composed of a roller 30.

The operating system for the main clutch 2 is configured such that the main clutch operating lever is linked to the operating member 15 so that it can be operated independently.

[Brief explanation of the drawing]

The drawings show an embodiment of the traveling operation device for a moving vehicle according to the present invention, and FIG. 1 is a side view of a combine harvester (moving vehicle), and FIG. FIG. 3A is an operation system diagram showing the operating state of the engine, and FIG. 4 is a sectional view taken along the line V-TV at the entrance of FIG. 1...Cam, 2...Main clutch, Total
...Speed lever, 4...Cam operating piece.

Claims (1)

[Claims] 1 In a mobile vehicle equipped with a main transmission, a sub-transmission, and a main clutch 2 that automatically operates to a clutch disengaged state using input rotational force by the action of a cam 1, the main transmission lever 3
A first rocking body 20 that rocks in conjunction with the gear shifting operation of the sub-transmission device, a second rocking body 23 that rocks in conjunction with the gear shifting operation of the sub-transmission device, and reversibly switches the cam 1 to the main clutch automatic disconnection operating state. a cam operating piece 4, and a linking tool 24 that connects the first and second rocking bodies 20, 23 and the cam operating piece.
is provided, and the connecting tool 24 is connected to the inner wire 2.
5 and an outer wire 26, and connects one end of the inner wire 25 to one of the first and second rocking bodies 20.23, and one end of the outer wire 26 to the other, respectively. The other end of the outer wire 2 is attached to the cam actuating piece 4.
6 are respectively connected to fixed parts on the body side, and when the main shift lever 3 or the sub-transmission device is operated to the neutral position, the cam operating piece 4 is moved to the main clutch 2 by the pulling action of the inner wire 25 or outer wire 26. A travel control device for a mobile vehicle configured to operate on the off-side.