JPH0410140Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle body lifting device for a mobile work vehicle equipped with a traveling crawler, and is applied to combine harvesters and the like.

[Prior art and problems]

In the case of a mobile work vehicle with a crawler such as a combine harvester, the tension must be adjusted when the crawler track becomes loose. By the way, when adjusting the tension, it is necessary to lift the vehicle body and suspend the tension section of the crawler in the air.
The use of jacks to lift the car body was troublesome and resulted in a decrease in work efficiency. In contrast, the present invention aims to solve this problem by making it possible to easily lift the vehicle body and ensuring safety during lifting.

[Means to solve the problem]

The technical means according to the present invention is a traveling crawler 1
A stand 5 that stands up and lifts the vehicle body when the aircraft moves backward is provided between the vehicle body 2 and the ground, and between the stand and the vehicle body, the stand 5 detects the stable standing posture of the stand and moves the aircraft backward. It is characterized by being provided with a mechanism 6 for stopping the operation.

[Function and effect of the idea]

Since the present invention is constructed as described above, when lifting the vehicle body, the lower end of the stand 5 is placed on the ground in a backward tilting position, and the traveling crawler is driven to move the vehicle backward. Then, the stand 5 stands up against the ground, crosses over the fulcrum, and maintains a stable standing posture, thereby lifting the rear part of the vehicle body upward. When the stable upright posture of the stand is maintained, at this point the detection mechanism 6 is activated and the engine or travel clutch is disengaged to stop the aircraft from moving backwards, so if the backward movement is too far, the detection mechanism 6 is activated. This can prevent problems such as damage to the stand.

In short, according to the present invention, the vehicle body can be lifted easily and safety can be ensured by using the backward movement of the vehicle body and the stand.

〔Example〕

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

The figure shows an example of a combine harvester, with traveling crawler 1
A threshing section 3 is mounted on the vehicle body 2, which is equipped with a reaping section 4 at the front. The engine is mounted on one side of the reaping section, and above the engine is the driver's seat 9. Near the driver's seat is the operating lever (H, S, T lever) that controls the forward and backward movement of the aircraft. An operation box 11 having 10 etc. is installed.

A stand 5 that can be raised and lowered around a fulcrum P is provided at the rear of the vehicle body 2, and the lower end of the stand 5 is grounded on the ground in a backward tilting position, and then, when the traveling crawler is driven to move the vehicle backward, A stand 5 is configured to extend from the ground and stand up around a fulcrum P to lift the vehicle body.

And between this stand 5 and the vehicle body 2,
When the stand 5 crosses over the fulcrum and maintains a stable standing posture, a mechanism 6 is provided which detects this standing stable posture and stops the backward movement of the aircraft. In other words, in the embodiment, a detection switch 7 is provided, and when this is turned on, The key stop solenoid 8 is operated through an electric circuit as shown in FIG. 3 to stop the engine. Incidentally, instead of stopping the engine, the driving clutch may be disengaged.

If you lift the rear part of the car as described above,
Since the rear part of the crawler is suspended in the air, the tension roller can be moved to adjust the telesion of the crawler track.

Next, the structure of the operation section shown in FIGS. 4 and 5 will be explained. Operation box 11 has H.
In addition to the S/T levers 10, an auxiliary gear shift lever 12, reaping/threshing clutch levers 13, 14, etc. are mounted on internal shafts so as to be swingable in the longitudinal direction. Each lever is pivotally supported so as to be able to swing around a horizontal axis 16 on a support frame 15 that is fixedly supported on the aircraft body and is long in the longitudinal direction, and these swing operations operate the required devices of each part. We are continuing to do so.

Operation box 11 that covers the fulcrum of each lever
1 includes a top cover 11a having a guide groove 17 for each lever and a side cover 1 covering the lateral outer side of each fulcrum.
1b in a box shape, and is configured to swing open and close using one end side in the operating direction of each lever as a fulcrum, that is, a horizontal support shaft 18 provided on the front side of the support frame 15 as a fulcrum. ing. Reference numeral 19 indicates a locking tool that is set on the support frame 15 when the operation box 11 is closed. Note that the guide groove of each lever of the operation box is formed with a hole large enough to allow the knob portion of each lever to pass through when opening the operation box. The H/S/T lever 10 is a lever guide plate 2.
0 is removed and the structure is such that it is laterally laid down around the vertical axis 21 in the front-back direction. Therefore, the operation box 11 can be swung open using the horizontal support shaft 18 as a fulcrum by removing the locking tool 19, which is the setting part, and the fulcrum of each lever is fully opened, making inspection and maintenance easier. etc. maintenance will be improved.

[Brief explanation of the drawing]

The figures show one embodiment of this invention. Figures 1 and 2 are side views of the main parts of the combine, Figure 3 is an electric circuit diagram, and Figures 4 and 5 are the operation control section. A perspective view is shown. 1 is a traveling crawler, 2 is a vehicle body, 5 is a stand,
P indicates a fulcrum, and 6 indicates an engine stop mechanism.

Claims (1)

[Scope of utility model registration request] A stand 5 is provided between the vehicle body 2 equipped with the traveling crawler 1 and the ground to raise the vehicle body when the vehicle moves backward, and between the stand and the vehicle body, a stand 5 is provided which detects the stable standing posture of the stand. A vehicle body lifting device for a mobile work vehicle, characterized in that a mechanism 6 for stopping backward movement of the vehicle body is provided.