Tool car for tire replacement

Abstract

The invention discloses a tool car for tire replacement. The tool car comprises a crawler chassis, a portal frame and a a clamp, wherein the crawler chassis is vertically arranged, the clamp is installed on the portal frame, and the clamp is used for clamping or loosening a tire; a rectangular coordinate system is established with the front-back direction of the crawler chassis as the X axis, theleft-right direction of the crawler chassis as the Y axis and the height direction of the crawler chassis as the Z axis; the bottom end of the portal frame is hinged to the end, in the X-axis direction, of the crawler chassis through a first hinge shaft; a first telescopic cylinder used for supporting the portal frame is connected between the crawler chassis and the portal frame, one end of the first telescopic cylinder is hinged to the portal frame through a second hinge shaft, and the other end of the first telescopic cylinder is hinged to the crawler chassis through a third hinge shaft; andthe first hinge shaft, the second hinge shaft and the third hinge shaft are all arranged in the Y-axis direction. Therefore, efficient folding of the lifting portal frame is achieved through an erecting oil cylinder, and mechanical switching between the transportation state and the working state of the tool car is achieved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a tool cart used for tire replacement. Background technique [0002] The tire replacement of heavy trucks in the current market mainly adopts the method of manual on-site replacement. The method is mostly to use a jack to support the axle or leaf spring, and then use a labor-saving wrench to remove the bolt after the tire is off the ground, and then manually separate the tire from the axle with the aid of a crowbar. Due to the heavy weight of the tires on these large vehicles, manual removal and replacement of tires is very labor-intensive. A small number of trucks are equipped with a puller trolley to assist in tire removal and installation. This kind of puller trolley occupies a large volume and has a low degree of automation, so it is not suitable for on-vehicle configuration. [0003] Chinese invention patent application CN 111070981 A discloses a self-propelle...

AI Technical Summary

Problems solved by technology

Due to the heavy weight of the tires on these large vehicles, manual removal and replacement of tires is labor-intensive

A small number of trucks will be equipped with a puller trolley to assist in the removal and installation of tires. This kind of puller trolley takes up a lot of space and has a low degree of automation, so it is not suitable for on-vehicle configuration.

[0003] Chinese invention patent application CN 111070981 A discloses a self-propelled folding tire quick-change car. When the quick-change car is folded and retracted, it is necessary to manually pull out the latch from the working latch hole, and then manually swing the swing arm member to make the latch Inserting into the folding pin hole, the degree of mechanization is low, and it is time-consuming and labor-intensive

[0004] In addition, the current main wheeled tire trolley has poor off-road performance, which is not conducive to working in the field and is easy to fall into the ground

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