Spare tire protection and lifting fixing device

Abstract

The invention relates to the automobile spare tire external support field, particularly to a spare tire protection and lifting fixing device. The spare tire protection and lifting fixing device comprises a mounting support assembly, a transmission mechanism assembly, a pallet assembly and a steel wire rope. The mounting support assembly comprises a large support, a small support and a transmission pipe, wherein the large support and the small support are fixedly connected to an automobile body and fixedly connected through the transmission pipe; the transmission mechanism assembly is fixedly mounted on the large support, a main shaft in the transmission mechanism assembly is drivingly connected with a transmission disk which is connected with an inner gear disk through gear transmission, and the outside of the inner gear disk is provided with a wire slot; and one end of the steel wire rope is connected with the pallet assembly, the other end of the steel wire rope penetrates through the transmission pipe and is connected with the wire slot of the inner gear disk in a winding mode, and the disk piece of the inner gear disk is provided with lightening holes. According to the spare tire protection and lifting fixing device, the transmission mechanism is reasonable, the weight of moving parts can be lightened through the lightening holes, and labor-saving operation and smooth and stable transmission are achieved.

Description

technical field [0001] The invention relates to the field of external brackets for spare tires of automobiles, in particular to a spare tire protection and lifting and fixing device. Background technique [0002] The spare tire protection and lifting fixing device for commercial vehicles is a device used for dismantling, lifting, fixing the spare tire and protecting the spare tire when the car is running. Most of the existing spare tire protection and lifting and fixing devices are chain-type and drive tube-welded drag frame mechanisms at present. [0003] Among them, the chain structure generally directly uses the steel cable chain to fix the spare tire. Because there is no fixed moving track and no accurate pre-tightening device, the transmission of the mechanism is not stable during use, and there is no obvious locking feature, so it cannot provide locking protection. Time-consuming, laborious and noisy. [0004] The bracket type mechanism welded by the transmission tub...

AI Technical Summary

Problems solved by technology

[0003] Among them, the chain structure generally directly uses the steel cable chain to fix the spare tire. Because there is no fixed moving track and no accurate pre-tightening device, the transmission of the mechanism is not stable during use, and there is no obvious locking feature, so it cannot provide locking protection. Time-consuming, labor-intensive and noisy

[0004] The trailer-type mechanism welded by the transmission pipe is generally welded by bending the steel pipe or by bending and welding the bracket. Although this structure is relatively simple, it is inconvenient to disassemble and install, and it is easy to damage the spare tire.

[0005] In addition, the strokes of the two cannot be adjusted, the applicable model is single, and it is prone to abnormal noise when the surface is too bad

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