A jack for mounting car tires

Abstract

The invention provides a jack used for installing an automobile tire. The jack comprises a support bottom frame and a lifting support. The lifting support is of a flatted U-shaped structure, and the lug on the back of the lifting support is an installation portion. The jack used for installing the automobile tire also comprises a hydraulic device, a drive support, guide blocks, a fixing pin and a spring. The installation portion of the lifting support is rotationally installed on the top end of the drive support; the fixing pin is installed on the installation portion of the lifting support; the two ends of the fixing pin are connected with one ends of the guide blocks; the other ends of the guide blocks are rotationally connected with the back section of the support bottom frame; the upper end of the bottom of the drive support is rotationally connected with the back section of the support bottom frame; the lower end of the bottom of the drive support is rotationally connected with a plunger of the hydraulic device; the bottom of a cylinder of the hydraulic device is rotationally connected with the back section of the support bottom frame; the spring is elastically hung between the back section of the support bottom frame and the middle section of the bottom of the drive support. By means of the jack, the lifting itinerary is greater, tire arrangement is easy and labor-saving, the tire is convenient to fix by locking screws, and operation is stable and safe.

Description

technical field [0001] The invention relates to the technical field of jacks, in particular to a jack used for installing automobile tires. Background technique [0002] Due to the large volume and quality of the tires of the car, the installation is extremely laborious and time-consuming, resulting in high cost of replacing the car tires and low installation efficiency. It is very dangerous and harmful to spend a long time replacing tires on the roadside. The application number is: 201410364738.6, and the name is: the invention of the jack for installing automobile tires, which discloses a jack for installing automobile tires, which includes a support bottom frame and two support poles. It is a "匚"-shaped structure, the support bottom frame is arranged horizontally, the support pole is vertically arranged, a handrail bar is arranged on the upper end of the support pole, and the jack for installing the car tire is also It includes a sliding rod, two first connecting rods, t...

AI Technical Summary

Problems solved by technology

The above-mentioned invention has the following three disadvantages: 1. Because the handrail, the two support poles and the slide bar have screw holes that block the tires, it is inconvenient to lock the screws or the tires cannot be installed; 2. The support bottom frame is too high, and the tires require manual lifting. It is difficult to place the tire if it is high up; 3. The lifting stroke of the tire is a bit small, the operation is inconvenient, and the applicability of the model is limited

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