Hoisting mechanism of large-tonnage high-lift crane

Abstract

The invention discloses a large-tonnage high-lift crane hoisting mechanism which comprises two broken line duplex winding drums, a high-speed shaft synchronous linear large speed reducer, two sets of upper pulley blocks, two driving motors, two pairs of brakes, a set of movable pulley block lifting appliance and four steel wire ropes. One end of each fold line duplex winding drum is connected with a low-speed shaft of the high-speed shaft synchronous line-shaped large speed reducer, and the other end of each fold line duplex winding drum is supported on a trolley frame supporting seat; the high-speed shaft synchronous line-shaped large speed reducer adopts a double-in and double-out structural form; the two sets of upper pulley blocks are symmetrically arranged between the inner sides of the two fold line duplex winding drums; the two driving motors are respectively connected with a high-speed shaft of the high-speed shaft synchronous line-shaped large speed reducer; and the two pairs of brakes are arranged between the two driving motors and the high-speed shaft synchronous linear large speed reducer. According to the invention, compact hoisting mechanism arrangement is adopted, so that the space required for winding the steel wire rope can be effectively reduced, and the arrangement requirements of the hoisting mechanism of the crane with large tonnage, high lift and small trolley track gauge are met.

Description

technical field [0001] The invention belongs to the technical field of hoisting and transportation equipment, and in particular relates to a hoisting mechanism of a large-tonnage high-lift crane. Background technique [0002] At present, the four-rope hoisting mechanism single lifting point hoisting system of a large-tonnage high-lift crane is usually designed as two sets of hoisting mechanisms that are synchronously associated, such as figure 1 As shown, the four steel wire ropes are respectively wound on the four single drums 101 of the hoisting mechanism in a double-layer winding form, and after being wound between the movable and fixed pulley blocks, the other ends of the two steel wire ropes on the same drum are taken up in the small The two ends of the balance arm 102 above the vehicle frame. [0003] The disadvantages of the prior art include: since the two sets of balance arms 102 are arranged on the trolley frame, the distance between the fixed pulleys 103 is relat...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the existing technology include: since the two sets of balance arms 102 are arranged on the trolley frame, the distance between the fixed pulleys 103 is relatively large, which cannot meet the crane arrangement with small requirements on the trolley gauge.

At the same time, the four single-connected reels 101 are driven by a large-size reducer 104 arranged in the middle, so that the arrangement of the drive motor must consider that the position of the fixed pulley does not interfere. difficulty

This arrangement results in a long form factor and high equipment cost

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