Crane with double self-locking structure

Abstract

The invention discloses a car lifting machine with double self-locked structures. The car lifting machine comprises a machine body, a support frame mechanism capable of moving up and down along the machine body and lifting a car body, and a screw rod which is vertically arranged in the machine body, wherein an operation nut is arranged on the screw rod and is matched with the screw rod; the operation nut is fixedly connected to the support frame mechanism; the car lifting machine also comprises a driving device used for driving the screw rod to rotate and is characterized in that the driving device comprises a turbine worm reducer located at a bottom plate of the machine body; a turbine of the turbine worm reducer is located at the bottom of the screw rod and is arranged coaxial to the screw rod; the lower end of the screw rod is fixedly connected to the output end of the turbine worm reducer. The car lifting machine has the advantages that the layout is reasonable, the structure is compact, the space utilization rate is improved, the stability is excellent, the maintenance is convenient, the safety of the car lifting machine can be improved, the service life of the car lifting machine can be prolonged, the transmission structure is strong in carrying capacity and high in mounting accuracy, and the transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a crane with a double self-locking structure. Background technique [0002] With the rapid development of the city, the traditional highway traffic has become extremely congested, and it is difficult to meet people's requirements for commuting and traveling. Rail transit has been vigorously developed due to the advantages of large carrying capacity at one time, many operating shifts, and collective control without congestion. [0003] In order to ensure the safety of rail traffic, after the rail vehicle has been running for a period of time, it is necessary to overhaul or replace the wheel set in the bogie and other parts of the vehicle bottom. During maintenance, the entire group of vehicles needs to be lifted to a certain height in order to replace the vehicle bottom. Bogies and other components. [0004] When overhauling, it is necessary to separate the carriage from the chas...

AI Technical Summary

Problems solved by technology

[0004] When overhauling, it is necessary to separate the carriage from the chassis by means of fixed lifting equipment or overhead cranes in order to overhaul the vehicle, and the overhauled vehicle is often moved and shifted, which requires multiple fixed lifting equipment or overhead cranes to be set up in the maintenance workshop. Cars reduce the effective working area of ​​the workshop and increase the equipment, especially when multiple vehicles need to be repaired, each car needs to be moved and shifted, so the maintenance time of the vehicle is long, the equipment is occupied, and the efficiency is low. And it is easy to cause bumping of the vehicle, damage to the outer surface and certain unsafe hidden dangers due to hoisting, which will affect safe production and increase maintenance costs. Moreover, when using fixed lifting equipment to lift or lower the carriage, it cannot really achieve linkage and synchronization. Rise or fall at the same time, prone to accidents

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