Vehicle-mounted jack

Abstract

The invention belongs to the technical field of jacks, and relates to a vehicle-mounted jack, in particular to a vehicle jack. The vehicle-mounted jack overcomes the defects in the prior art, the supporting position of the jack can be selected as needed, and operation is convenient. According to the specific scheme, the vehicle-mounted jack comprises a vehicle chassis, the vehicle chassis is composed of crossbeams on the two sides and a cross bar between the crossbeams, a transmission system, a driving system, a steering system and a brake system are installed on the vehicle chassis, a guide groove is formed in the bottom of each crossbeam in the extension direction, the cross section of each guide groove is shaped like an inverted Chinese character 'ao', and a jack body capable of moving in the guide grooves back and forth is installed in the guide grooves. The jack body retracts and is suspended at the bottom of the chassis when not used, thereby not affecting running of a vehicle; in the maintenance process, the to-be-maintained position is selected, the jack body is fixed with lock catch devices arranged on the crossbeams at intervals, the position of the jack body will not be changed, and supporting stability is improved.

Description

technical field [0001] The invention relates to a vehicle-mounted jack, belonging to the technical field of jacks, and in particular to a vehicle-mounted jack. Background technique [0002] Currently known jacks used in automobiles include screw horizontal jacks, screw vertical jacks, hydraulic jacks, and the like. Generally, it includes the base, the support, the lifting screw engaged with the nut on the bracket, the operating handle connected with the lifting screw, etc., but when using such a jack to change the tire or repair the car, the jack is generally supported on the car. At the bottom, the jack of the car is generally small, the top support is unstable, and the support safety is not high. Moreover, many people forget to put the car jack on the car. When the car breaks down, they often cannot save themselves because there is no jack, which is very inconvenient. SUMMARY OF THE INVENTION [0003] The present invention overcomes the deficiencies in the prior art an...

AI Technical Summary

Problems solved by technology

It generally includes the base, the support, the lifting screw engaged with the nut on the bracket, the operating handle connected with the lifting screw, etc., but when using such a jack to change tires or repair the car, the jack is generally supported on the car. At the bottom, the jacks attached to the car are generally small, and the support at the top is unstable and the support safety is not high

Moreover, many people will forget to put the car jack on the car. When the car breaks down, they often cannot save themselves because there is no jack, which is very inconvenient.

Images