Bridge crane telescopic sleeve type rigid positioning device

Abstract

The invention discloses a bridge crane telescopic sleeve type rigid positioning device. The bottom of a trolley of the bridge crane is provided with a telescopic sleeve assembly, wherein the telescopic sleeve assembly consists of a multi-section sleeve, a bump component and a rolling bearing; the multi-section sleeve has a multi-sleeve structure of which the sleeves are sleeved in turn from big sections to small sections; a movably pulley block is fixed at the bottom end in a single sleeve with the minimum section; each single sleeve consists of a sleeve body, an upper end face and a lower end face; peripheries of both the upper end face and the lower end face are protruded out of the sleeve body; the part, which is protruded out of the sleeve body, of the periphery of the lower end face is wider than the upper end face; the side face of the sleeve body is provided with a plurality of sleeve holes, a plurality of rolling bearing mounting holes and a plurality of bump mounting holes; and the rolling bearing is arranged in the rolling bearing mounting holes. By using vertical motion of the telescopic sleeve assembly structure, the crane can be prevented from swinging backwards and forwards and leftwards and rightwards during starting, braking and running, and high-accuracy rigid rapid lifting and positioning and safe, reliable and high-efficiency lifting and positioning of cargoes can be realized.

Description

technical field [0001] The invention relates to a positioning device of an overhead crane, which is used for preventing the crane from swinging during start-up, braking and running, and stably and accurately hoisting and positioning. Background technique [0002] At present, the hoisting mechanism of ordinary cranes with small and medium tonnages produced in my country generally adopts the form of a wire rope telescopic mechanism, which can meet the needs of general cargo lifting. In the case of back and forth and left and right swings, the positioning accuracy is not high, the operation is inconvenient, and the production efficiency is reduced, especially in the occasions that require high-precision and fast positioning and stacking, such as the transportation of nuclear waste barrels, ordinary cranes cannot meet the precise positioning demand. Contents of the invention [0003] The invention provides a telescopic sleeve-type rigid positioning device for a bridge crane, wh...

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Problems solved by technology

[0002] At present, the hoisting mechanism of ordinary cranes with small and medium tonnages produced in my country generally adopts the form of a wire rope telescopic mechanism, which can meet the needs of general cargo lifting. In the case of back and forth and left and right swings, the positioning accuracy is not high, the operation is inconvenient, and the production efficiency is reduced, especially in the occasions that require high-precision and fast positioning and stacking, such as the transportation of nuclear waste barrels, ordinary cranes cannot meet the precise positioning needs

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