Caterpillar band tensioning device for track vehicle and track vehicle

Abstract

The invention provides a caterpillar band tensioning device for a track vehicle. The caterpillar band tensioning device comprises a crawler wheel frame and an elastic bearing mechanism, wherein the crawler wheel frame and a crawler wheel shaft of a crawler wheel are fixedly arranged, and the elastic bearing mechanism is used for providing elastic bearing force for the crawler wheel frame. The elastic bearing mechanism of the caterpillar band tensioning device comprises a spring force bearing mechanism and a hydraulic pressure bearing mechanism which are connected in series. The spring force bearing mechanism comprises a hollow spring and a guiding sleeve surrounding the hollow spring and guiding stretching and retracting of the hollow spring. The caterpillar band tensioning device for the track vehicle can ensure tensioning of a caterpillar band even under the situation that a hydraulic cylinder leaks liquid or breaks down, and the normal running of the track vehicle with the caterpillar band tensioning device is guaranteed. The dismounting and mounting procedures of the caterpillar band tensioning device are simplified through the guiding sleeve on the periphery of the hollow spring. The invention further relates to the track vehicle with the caterpillar band tensioning device.

Description

technical field [0001] The present invention relates to the field of construction machinery or agricultural machinery, and more specifically, relates to a crawler tensioning device for tensioning and adjusting the crawler wheels of a crawler vehicle. It also relates to a tracked vehicle using the track tensioning device. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] Crawler machinery is widely used in the field of construction machinery and agricultural machinery, and the crawler is one of the main walking parts of this type of machinery. In order to meet the walking requirements of different road conditions, the track tensioning mechanism plays a very critical role. First of all, the track tensioning mechanism can keep the track tensioned and in good working condition. Secondly, the track tensioning mechan...

AI Technical Summary

Problems solved by technology

For the lead screw track tensioning device, when the track is tensioned at a certain position, the screw is locked by the nut, and it cannot be adjusted automatically in time after the track becomes slack due to changes in road conditions.

The hydraulic tension force is not easy to control. When the hydraulic system fails or the hydraulic oil leaks, the tension force cannot ensure that the track is always in a tensioned state, causing the track to loosen, and then causing faults such as track and track frame interference wear or track derailment.

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