Variable-amplitude movable pulley block winding and unwinding device convenient for transition

Abstract

The invention discloses a variable-amplitude movable pulley block winding and unwinding device convenient for transition. The device comprises a variable-amplitude mechanism composed of a variable-amplitude winch, a variable-amplitude steel wire rope, a variable-amplitude fixed pulley block and a variable-amplitude movable pulley block, and a traction mechanism connected to a wheel seat pull platein the variable-amplitude movable pulley block in a bolted mode. The traction mechanism is formed by sequentially winding a traction steel wire rope led out of a traction winch around a traction fixed pulley and a traction movable pulley, and the leading-out end of the traction steel wire rope is fixed to a lifting guide wheel support in the middle of a cargo boom. According to the invention, thewinding and unwinding switching of the variable-amplitude movable pulley block between the fixed position and the preset position can be quickly realized in the process of mounting or dismounting a tower crane so that the dismounting process of the variable-amplitude movable pulley block is omitted, the process of repeatedly winding or folding the variable-amplitude steel wire rope on site beforeand after transition is omitted, the mounting or dismounting time of the tower crane needing transition is greatly shortened, and the transition efficiency of the tower crane is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of hoisting machinery, and more specifically relates to a retractable device for a luffing movable pulley block which is convenient for transition. Background technique [0002] As one of the main forces of global renewable energy, wind power has been paid more and more attention by countries all over the world. With the gradual development of wind power generation equipment in the direction of large-scale, higher towers, larger impellers, and larger capacity put forward higher requirements for the performance of wind power hoisting equipment, especially the equipment transfer efficiency, which directly affects the entire wind power. The construction progress of the field. Relying on the successful development of the first wind power hoisting equipment tower crane in China, compared with the steps of on-site installation and disassembly of the traditional tower crane, the luffing pulley block of the wind po...

AI Technical Summary

Problems solved by technology

However, this kind of wind power hoisting equipment tower crane still has disadvantages in the process of use: it is necessary to install or disassemble the luffing pulley block on site when changing sites, and it is difficult to efficiently install or disassemble the luffing pulley block only relying on the auxiliary crane on site. ground installation or disassembly, which greatly affects the transition efficiency of the wind power hoisting equipment tower crane

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