Lifting mechanism of gantry crane

Abstract

The present invention provides a hoisting mechanism of gantry crane. Said invention mainly includes the following several portions: two sets of independent symmetrically-arranged hoisting mechanisms on the trolley, speed reducer, two reels, reel couplers, steel wire ropes and spreader, etc. Said invention also provides their connection mode and winding method of the steel wire ropes. It is characterized by that two sets of hoisting mechanisms can be synchronously or asynchronously operated.

Description

technical field [0001] The invention belongs to a hoisting and transporting machine, in particular to a hoisting mechanism of a gantry crane with a large hoisting height and a large hoisting capacity. Background technique [0002] In the existing hoisting mechanism types of cranes with large lifting height and large lifting capacity (including bridge cranes or gantry cranes) ("Crane Design Manual" published by China Railway Press in 1998), it includes motors, Couplings, brakes, reducers, reels, wire ropes, fixed pulleys and movable pulleys, etc., when four single-connected reels or two double-connected reels are used on two different axes, the reels of the wire rope on the same axis Winding on the drum, in order to ensure the level of the spreader, it is necessary to ensure that the drums on the two axes are synchronized, and the high-speed shaft or the low-speed shaft are rigidly connected, usually using the low-speed gear of the reducer or the open gear (that is, the open ...

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Problems solved by technology

[0002] In the existing hoisting mechanism types of cranes with large lifting height and large lifting capacity (including bridge cranes or gantry cranes) ("Crane Design Manual" published by China Railway Press in 1998), it includes motors, Couplings, brakes, reducers, reels, wire ropes, fixed pulleys and movable pulleys, etc., when four single-connected reels or two double-connected reels are used on two different axes, the reels of the wire rope on the same axis Winding on the drum, in order to ensure the level of the spreader, it is necessary to ensure that the drums on the two axes are synchronized, and the high-speed shaft or the low-speed shaft are rigidly connected, usually using the low-speed gear of the reducer or the open gear (that is, the open gear) The reducer) rigidly connects the reels of the two axes, so because the size of the reducer is large, and the reducer is fixed on the trolley frame, the trolley frame is required to have sufficient precision and rigidity, when the trolley When the frame is deformed by force, if the fixing method of the reducer is improper or the rigidity of the reducer box and the trolley frame is not matched properly, it will affect the gear meshing of the reducer and make noise. Due to the gap generated by the deformation, serious oil leakage occurs

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