JPS5824627Y2 - Tracked traveling device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a tracked traveling device.

Conventional tracked traveling systems are constantly subject to large loads such as collisions between the lower rolling shaft and track link, uneven loads due to the effects of uneven road surfaces, and collisions during running, so not only the durability of the suspension system but also the operator's Issues include the ride comfort associated with this and the impact it has on ground vibrations related to the surrounding environment.

On the other hand, it is desired to improve work efficiency by increasing traction force by improving ground contact.

The present invention is an attempt to solve the above-mentioned problems with the conventional tracked traveling device and provide a tracked traveling device with excellent performance.The configuration thereof will be explained below based on an embodiment shown in the drawings. .

In the figure, 1 is a frame, 2 is a starting wheel, 3 is an idler wheel, and 4 is a crawler belt wrapped around both wheels 2 and 3.

The starting wheel 2 is provided in conjunction with a final reduction gear mechanism (not shown) provided at the rear end of the frame 1, and the idler wheel 3 is provided at the front end of the frame 1 so as to be slidable in the front-rear direction. be.

The idler wheel 3 is biased by a spring 6 via a piston 5 in the tension direction of the crawler belt 4.

This adjustment is made by adjusting the amount of grease that is press-fitted into the rod-side chamber of the cylinder 7 into which the piston 5 and spring 6 fit.

On the lower side of the frame 1, there is an L-shaped support lever 8 whose one end is pivotally attached to the frame 1 so as to rotate in the vertical direction and whose other end is directed upward, and the center is attached to the middle part of the support lever 8. A plurality of bogie-type wheel rolling devices 11 are provided, each consisting of a pivotally supported bogie link 9 and two lower rolling shafts 10 and 10 pivotally supported at both ends of the bogie link 9.

Note that 11a is a stopper. A roller 12 is supported at the other end of each support lever 8 of each wheel rolling device 11.

In addition, an idle roller 1 is placed between each of these wheel rolling devices 11 and at a position lower than the roller 12 on the front side of the foremost wheel rolling device 11.
3 is supported on the frame 1, and each roller 1
A cable 15 whose one end is connected to the frame 1 and the other end is connected to the piston 14 is wound around the roller 12 of each wheel-rolling device 11, and the tension of this cable 15 causes the rotation of each wheel-rolling device 11 The support lever 8 is urged downward.

The piston 14 is fitted into a cylinder 16 provided in the frame 1, and the piston 14 is biased by a spring 18 through grease 17 in a direction that generates tension on the cable 15.

The grease 17 is injected from the nipple 19, and the biasing force of the piston 14 is adjusted by the amount of grease 17 injected.

Note that the tracked traveling device configured as described above is used in a tracked vehicle as a pair of left and right.

Each wheel device 11 is supported by the tension of the cable 15, and the crawler belt 4
will be guided.

Small irregularities on the road surface during running are followed by the swinging of the bogie link 9, and in response to large irregularities, each set of wheel rolling devices 11 is individually displaced upward by rotation of the support lever 8.

At this time, when one set of wheel roller devices 11 moves upward, the other wheel roller devices 11 are moved downward by the tension of the cable 15, but in the end, the wheel roller device 11 that moves upward is a piston that supports the cable 15. It is supported while being buffered by a spring 18 via a spring 14 .

In the above embodiment, the shape of the support lever 8 of each wheel rolling device 11 is such that the support portion of the bogie link 9 and the roller 12 at the other end are at approximately the same position with respect to the running direction. However, as shown in FIG. 2, the shape of the support lever 8' is such that the fulcrum for supporting the bogie link 9 is located between the pivot point for the frame 1 and the roller 12 that contacts the cable 15, so that each support lever 8' The load acting on the roller 12 of the lever 8' can be reduced.

The present invention is as described above, and is a tracked traveling device in which a crawler belt 4 is wound around a starting wheel 2 and an idler wheel 3 provided at both ends of a frame 1 in the longitudinal direction. One end is pivoted to the frame 1 so as to rotate in the vertical direction,
A support lever 8 whose other end faces upward and supports a roller 13 at its tip; a bogie link 9 which is pivotally supported approximately in the middle of the support lever 8 so as to rotate its center in the vertical direction; A plurality of sets of wheel rolling devices 11 each consisting of a lower rolling shaft 10, 10 supported at both ends of the bogie link 9 and rolling in contact with the crawler track 4 were provided, and each wheel rolling device 11 was supported at the other end of the support lever 8. Since the tracked traveling device is constructed by wrapping one tensioned cable 15 around each roller 13 so that each roller 13 is evenly biased downward, minute irregularities on the road surface can be avoided. It is followed by the bogie link 9, and large irregularities are followed by displacing the support lever 8 upward against the tension of the spring-biased cable 15, and even on an uneven road surface, it is applied to each downward rotation shaft 10. It is possible to equalize the load, reduce collisions with the road surface, and exhibit good ground contact.

Therefore, collisions between the lower rolling shafts 10, 10 and the track links of the crawler belt 4, unbalanced loads and collisions due to the effects of unevenness on the road surface are eliminated, and the durability of the tracked traveling device as a whole can be improved. The related riding comfort and the ground vibration related to the surrounding environment can be improved.

On the other hand, grounding performance is also improved, and work efficiency can be improved.

Furthermore, pitching ability is also improved due to the improvement in ground contact.

[Brief explanation of drawings]

FIG. 1 is a schematic structural explanatory diagram showing an embodiment of the present invention, and FIG. 2 is a schematic structural explanatory diagram showing another embodiment. 1 is the frame, 2 is the starting wheel, 3 is the idler wheel, 4 is the track, 8
, 8' is a support lever, 9 is a bogie link, 10 is a downward rotation shaft, 11 is a wheel rolling device, 13 is a roller, and 15 is a cable.

Claims (1)

[Scope of utility model registration request] In a tracked traveling device in which a crawler belt 4 is wound around a starting wheel 2 and an idler wheel 3 provided at both ends of the frame 1 in the longitudinal direction, the tracked traveling device is formed in an abbreviated shape and has one end rotated in the vertical direction around the frame 1. A support lever 8 is pivotably supported so that the other end thereof faces upward and supports a roller 13 at its tip, and a support lever 8 is provided with a support lever 8 that is pivoted so as to rotate in the vertical direction. Supported bogie link9. A plurality of sets of rolling wheel devices 11 are provided, each consisting of a lower rolling shaft 10, 10 supported at both ends of the bogie link 9 and in rolling contact with the crawler track 4, and the other end of the support lever 8 of each rolling wheel device 11 is provided. One cable 15 maintained in tension is attached to each roller 13 supported by
A tracked traveling device characterized in that each roller 13 is wound around the rollers 13 so as to be equally urged downward.