Synchronous lifting system for crane unit

Abstract

The invention discloses a synchronous lifting system of a crane unit, comprising at least four mobile cranes, wherein the mobile cranes include a body and a bracket mechanism, and the bracket mechanism includes a bracket and a support head; The bracket includes two parallel side plates and a support mechanism for connecting the side plates; the bracket head includes two side plates respectively arranged along the inner sides of the two side plates, and one end of the side plates is connected with a bracket It also includes a drive motor and a PLC system capable of controlling the rotation of the drive motor, an alarm device is connected to the output end of the PLC system; a proximity switch for detecting the vehicle body is provided in the support block, and the proximity switch Electrically connected to the input of the PLC system. The invention has the advantages of simple structure, convenient operation, easy realization of closed-loop control of synchronous operation of the crane unit, and the advantages of improving the synchronization accuracy of the crane unit, improving the safety of the system, and improving the reliability of the system by adopting a redundant design.

Description

Technical field [0001] The invention relates to the technical field of truck cranes, in particular to a synchronous lifting system of a truck crane unit. Background technique [0002] With the rapid development of the city, the traditional road traffic has been extremely congested, and it is difficult to meet the requirements of people to commute and travel. Rail transit has developed vigorously due to its large carrying capacity at one time, many operating shifts, and collective control without congestion. [0003] In order to ensure the safety of rail transit, after rail vehicles have been running for a period of time, the wheelsets in the bogie and other parts under the car need to be overhauled or replaced. During maintenance, the entire group of vehicles needs to be raised to a certain height to replace the bottom of the vehicle. Bogies and other components. [0004] During maintenance, the carriage needs to be lifted and separated from the chassis by fixed lifting equipment o...

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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