JPS6023252Y2 - Vehicle driving control device - Google Patents

Description

[Detailed explanation of the invention] This invention brakes the left and right traveling devices by operating the steering lever to change the direction of movement of the aircraft.
The present invention relates to a travel operating device for a vehicle that also includes a parking mechanism in which the steering levers are locked when the left and right steering levers are simultaneously rotated to a predetermined position to maintain the braking state of the traveling device.

Generally, a travel operation device having a parking mechanism as described above is
An engaging tool is provided on the steering lever that brakes the traveling device, and while the steering lever is in sliding contact with this retaining tool, the steering lever simultaneously rotates to a predetermined position and engages with the engaging tool to achieve this rotational state. It has a structure in which a secured tool is provided to hold the.

In order to release the engagement tool from both of the retainers, a release lever or the like is provided. So, if you mistook it for another lever and accidentally operated it,
It is difficult to decide where to place it.

In view of the above-mentioned circumstances, this invention is designed to enable reliable traveling operation and braking operation of the traveling device with a simple structure, and is constructed as follows.

That is, a pair of left and right steering levers 2 and 3 that rotate back and forth in the direction of travel are installed with appropriate separation between them, and the engaging tool 7 is installed within the left and right distance between the steering levers 2 and 3. 2,
A parking lever 19 having an opening-shaped cross section and having left and right side walls to cover the left and right engaging members 7, 7 is provided integrally with the left and right engaging members 7, 7, and is pivotally supported at its intermediate portion so as to be rotatable back and forth. , an engaged tool 8 that engages with the engaging tools 7, 7 is provided integrally with the parking lever 19 on the front and rear sides of the parking lever 19,
The engaged tool 8 and the engaging tools 7, 7 are engaged with each other when the engaged tool 8 is pressed down resiliently against the engaging tools 7, 7 and the steering levers 2, 3 are simultaneously rotated. This device is configured to hold the parking lever 19 in its rotational position, and is configured to release the 7.8 degrees of engagement by pressing down on the other front and rear sides of the parking lever 19.

With this configuration, this invention has the following technical effects.

That is, the configuration in which the engaged tool 8 and the engagement release part are integrally formed in the parking lever 19 that releases the engagement between the engaging tools 7, 7 and the engaged tool 8 is different from the so-called conventional engaging part. It can be said that this is a simple and inexpensive structure, unlike a structure in which the lever is operated using a bar-shaped release lever or the like.

Moreover, the parking lever 19 is formed into a Japanese letter-shaped plate.

The configuration in which the release operation can be performed by pressing down on the upper part of the front and rear sides has a different shape from the steering levers 2, 3, etc. that are arranged adjacent to each other, and the operation method (how to move the lever) is also different. There is no need to worry about incorrect operation.

Next, one embodiment of this invention will be described based on the drawings. This steering operation device is for controlling the direction of travel of a so-called Novester, which has a threshing machine mounted on the front loading platform 11 of a transport vehicle 9. be.

The traveling device of the transport vehicle 9 consists of a crawler 12, and is provided with a loading platform 11 on the front side and a driving unit 13 on the rear side.

The handle 14 of the rear driving unit 13 includes a running latch lever (not shown) that connects and disconnects power from the driving unit 13 to the traveling device, and a left and right steering lever that brakes the left and right traveling devices to change the direction of travel. 2 and 3, and a gear shift lever 15 for changing the traveling speed is provided below them.

A fitting 16 having a U-shaped cross section is fixed to the rear road shaft of the handle 14, and an engaging fitting 7 is attached to the pivot shaft 1 of the fitting 16.
, 7 are fixed to the left and right steering levers 2.3, which are rotatably supported.

The engaging members 7, 7 are assembled so as to be present within the left-right spacing of the steering levers 2, 3.

Further, wires 18.degree. 18 connected to the brake parts of the left and right traveling devices are respectively fixed to the engaging tools 7,7.

Therefore, when the steering lever 2.3 is rotated rearward, the wires 18.18 are pulled and the left and right traveling devices are braked.
The traveling direction of the transport vehicle 9 is changed toward the rotated steering levers 2 and 3.

Furthermore, if the left and right steering levers 2 and 3 are pulled simultaneously, the left and right traveling devices are braked, and the transport vehicle 9 is stopped.

22 is a stop pin that prevents the steering levers 2 and 3 from rotating forward beyond a certain level.

On the side of the engaging tools 7, 7, a parking lever 19 having an opening-shaped cross section is rotatably supported at its substantially central portion to the shaft 20 of the fixture 16, and An engagement rod 8 is horizontally suspended across the left and right side walls of the parking lever 19 on the front side, and a tension spring 21 is interposed between the pivot shaft 1 and the engagement rod 8.
Then, this engaging rod 8 is brought into pressure contact with the sliding portion 6 of the engaging tools 7, 7.

When only one side of the left and right steering levers 2 and 3 is rotated, the engaging rod 8 is supported by the starting end 4 of the slide portion 6 of the engaging tool 7 of the steering lever that does not rotate.

When the left and right steering levers 2 and 3 are rotated simultaneously, the engagement rod slides on the slide portions 6 of the engagement tools 7 and 7, and finally falls below the front protrusion 17 of the slide portion 6. The protrusion 17 engages the engagement rod 8 to maintain the braking state of the transport vehicle.

To release this braking state, use the shaft 2 of the parking lever 19.
If you press down the engagement release part 23 which is the rear upper part from 0,
The engagement rod 8 climbs over the protrusion 17 of the engagement members 7, 7, and the steering levers 2, 3 are released from engagement and return to the rotation start end 4.

In addition, in this embodiment, the engagement tools 7, 7 are connected to the steering levers 2, 7,
3 side, and the engaging rod 8 is fixed to the parking lever 19 side, but the opposite may be used.

In other words, by fixing short engagement rods to the steering levers 2 and 3,
The present invention can also be implemented with a configuration in which the parking lever 19 and the engagement tool are integrally formed and the sliding portion of the engagement tool is pressed into contact with the engagement rod.

[Brief explanation of the drawing]

The figures show one embodiment of this invention; Fig. 1 is a front view, Fig. 2 is a partial front view, Fig. 3 is a right side view partially cut away, and Fig. 4 is a partially cutaway right side view. It is an enlarged front view of a part cut away. 2.3...Steering lever, 4...Rotation start end, 7...Engagement tool, end...Engagement rod (engaged tool) , 19... Parking lever, 23...
- Disengagement part.

Claims (1)

[Scope of utility model registration request] A pair of left and right steering levers that rotate back and forth in the direction of travel are installed separated by an appropriate distance, and engagement tools are provided within the left and right distance of the steering levers, each fixed integrally with the steering levers. In addition, a parking lever having a cross-sectional shape having left and right side walls and having a cross section to cover the left and right engaging tools is pivotally supported at its intermediate portion so as to be rotatable back and forth, and the engaging tools are attached to the front and rear sides of the parking lever. An engaged tool to be engaged is provided integrally with the parking lever, and the engaged tool is pressed down against the engaging tool to engage the engaged tool while the steering lever is rotated at the same time. 1. A vehicle travel operating device, wherein a fitting is engaged to maintain a rotational position, and the engagement between the two is released by pressing down the other front and rear sides of the parking lever.