Gear transmission jack

Abstract

The invention discloses a gear transmission jack which comprises a top tray, a threaded drum, a threaded mandril and gear transmission assemblies, wherein the lower part of the top tray is fixedly connected with the threaded drum; the lower end of the threaded drum is in threaded fitting with the upper end of the threaded mandril; at least two driving motors commonly drive the threaded mandril through the corresponding gear transmission assemblies to rotate, so that rotation of the threaded mandril can drive the threaded drum to rise and fall, to implement that the top tray jacks up and drops down a heavy object. By the arrangement of the two gear transmission assemblies, the jacking capacity of the jack is greatly improved, and the gear transmission efficiency is improved. Supporting of the gear assemblies of the gear transmission jack is also greatly improved, and the use convenience is enhanced; furthermore, due to motor driving, jacking automation is realized.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, and in particular relates to a gear transmission jack. Background technique [0002] In production practice, we often encounter some heavy objects such as machine tools, heavy boxes, underground rails, etc. to move or lift without lifting equipment. It is very difficult to rely on manual operation, which requires the use of Jack came to our aid. Jacks are closely related to our lives, and are widely used in construction, railway, automobile maintenance and other departments. Therefore, the development of jack technology will directly or indirectly affect the normal operation and work of these departments. [0003] The current jacks generally use air pressure or hydraulic pressure. Although this structure can withstand the lifting of relatively large weights, it is very troublesome to maintain. Moreover, once oil leakage occurs, it is easy to contaminate parts. Therefore, it is not suit...

AI Technical Summary

Problems solved by technology

[0003] The current jacks generally use air pressure or hydraulic pressure. Although this structure can withstand the lifting of relatively large weights, it is very troublesome to maintain. Moreover, once oil leakage occurs, it is easy to contaminate parts. Therefore, it is not suitable special occasion needs

[0004] For the application of gear transmission, some jacks that use gear transmission to realize jacking are gradually appearing at present. However, the gear transmission structure of current jacks generally only uses a single gear. damage, moreover, the lifting and jacking of heavier objects cannot be achieved, therefore, the existing jack needs to be improved in order to achieve a high-performance gear transmission jack

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