Lifting device of a pneumatic truck crane

Abstract

The invention discloses a lifting device for a pneumatic automobile crane, and the device belongs to the field of lifting machinery. The device disclosed by the invention comprises a lifting arm, a revolution mechanism, a lifting mechanism and a luffing mechanism, wherein the revolution mechanism makes a revolution table rotate by a sway air cylinder; the lifting arm is installed on the revolution table and controls stretching and contraction of the lifting arm by the air cylinder; the lifting mechanism uses a pneumatic motor to drive a winding drum to deploy and contract a steel wire rope so as to carry out cargo hoisting; and the luffing mechanism carries out inclined angle amplitude control of the lifting arm by a luffing air cylinder. The device disclosed by the invention replaces hydraulic power by pneumatic power, takes the pneumatic power as a power source of the lifting device of the modeled automobile crane, demonstrates working principles of a hydraulic transmission system by a pneumatic transmission system, visually displays working principles of the lifting device, can carry out on-site teaching and demonstration easily, and is also very beneficial for further research of the automobile crane; and meanwhile, the device replaces hydraulic control by pneumatic control and has the advantages of low manufacture, rapid action responding, simple maintenance, convenient manufacture and avoidance of environmental pollution, etc.

Description

technical field [0001] The invention relates to a truck crane, more specifically, to a lifting device of a pneumatic truck crane. Background technique [0002] Hoisting machinery (crane) is an important means of transportation in the national production and manufacturing process. It is a kind of machinery that can move horizontally and vertically lift objects within a certain range; it can not only reduce physical labor, but also greatly improve labor productivity. The truck crane is a machine that combines the lifting device with the chassis of the car. It has the characteristics of cyclic operation and intermittent action. It is mostly used for tasks that are difficult to complete by manpower. It is mainly used in engineering construction, general construction engineering teams, and construction industries. , Power installation departments, etc. all need truck cranes to assist in construction. [0003] Truck cranes play a very important role in engineering construction, a...

AI Technical Summary

Problems solved by technology

The working principle of the pneumatic transmission system is similar to that of the hydraulic transmission system, so the pneumatic transmission system can be used instead of the hydraulic transmission system as the power source of the modeled truck crane to solve the hydraulic oil leakage pollution in the hydraulic transmission system, the system Complexity, high cost, inconvenient operation, etc.

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