Electric spare tire lifting frame

Abstract

The invention provides an electric spare tire lifting frame which is simple in structure, convenient to install and detach, not likely to be abraded, long in service life and safe and reliable in working performance. The electric spare tire lifting frame comprises a frame body. A supporting shaft I and a supporting shaft II are arranged on the frame body in parallel. The supporting shaft I is provided with a shaft sleeve and a transmission gear I. The supporting shaft II is provided with a transmission gear II and a transmission gear III. The shaft sleeve is provided with a transmission gear IV and a lifting chain wheel. The transmission gear I is engaged with the transmission gear II. The transmission gear III is engaged with the transmission gear IV. The led-out end of the supporting shaft I is provided with a retaining ratchet wheel. The frame body is provided with a retaining pawl corresponding to the retaining ratchet wheel. The led-out end of the supporting shaft I is connected with an inner stop ring and an outer stop ring through threads. A friction plate is arranged between each of the two stop rings and the retaining ratchet wheel. A belt pulley is fixed to the outer end face of the outer stop ring and connected with a motor on a side support through a belt. A torsion spring is installed on a sleeve shaft of the retaining pawl. The two ends of the torsion spring are fixed to the frame body and the retaining pawl.

Description

technical field [0001] The invention relates to a spare tire landing gear for suspending a spare tire, in particular to an electric spare tire landing gear. Background technique [0002] The existing spare tire landing gear for heavy trucks, trailers, and agricultural diesel vehicles includes a frame body, and the support shaft I and the support shaft II are arranged side by side on the frame body, and the shaft sleeve and the transmission gear are arranged on the support shaft I. I, the supporting shaft II is provided with a transmission gear II and a transmission gear III, and the shaft sleeve is provided with a transmission gear IV and a hanging sprocket, the transmission gear I and the transmission gear II mesh with each other, and the transmission gear III Mesh with the transmission gear IV, the support shaft I is additionally provided with a back-stop ratchet, and the frame body is provided with a back-stop pawl corresponding to the back-stop ratchet. Its service life...

AI Technical Summary

Problems solved by technology

This spare tire landing device has the following problems in actual use: 1. The support shaft I and the transmission gear I have a separate structure, and the support shaft II and the transmission gear III have a separate structure, which is complicated in structure and is not easy to assemble

2. When loading and unloading the spare tire, it is necessary to manually operate the handle to pull the pawl. Since the spare tire racks of large trailers, trucks, and engineering dump trucks are mostly placed under the body, the operator needs to drill under the body to pull the pawl. , the operation is very inconvenient, and the operating environment is very harsh

3. There is a guide groove on the side corresponding to the hanging sprocket on the frame body. The guide groove is easy to wear and loses its guiding effect after wearing to a certain extent.

Images