Three-degree-of-freedom crane for assembly

Abstract

The invention discloses a three-degree-of-freedom crane for assembly and belongs to the field of assembly of heavy equipment. An L-shaped base bracket (200) is fixed on the ground; a hydraulic pump station (100) is arranged on the rear of the L-shaped base bracket (200); a swinging part (300) is hinged on the L-shaped base bracket (200); a swinging rack swings through a swinging hydraulic cylinder (306); a lifting hydraulic cylinder (401) winds around a chain wheel (404) on a lifting crossbeam (402) through a chain (405); a rotating part (500) which is arranged in a slideway of a swinging part (400) is pulled to lift; and a hydraulic motor (507) drives an assembled piece (600) to rotate through a reduction box (508) and a rotating support (509), so that the assembled piece (600) is controllably lifted, rotated and pitched, can be adjusted to an optimal position and posture and is conveniently assembled with other parts; and therefore, the production efficiency and assembling quality are improved.

Description

technical field [0001] The invention belongs to the field of comprehensive test assembly, and is an assembly device capable of realizing three degrees of freedom motions of pitching, lifting and turning. Background technique [0002] Lifting devices are widely used equipment in industrial production, which can reduce the labor intensity of workers. At present, one type of lifting device commonly used in industrial production is to realize the lifting of heavy objects through crane cables. It can realize the lifting of heavy objects, but it is difficult to realize rotation, tilting and other actions, which cannot meet the needs of industrial production. [0003] Existing patents such as CN02295585.2 refer to a large-scale equipment closing and centering device, which discloses a large-scale equipment centering device used in the shipbuilding industry, which can complete the attitude adjustment of the six degrees of freedom of the workpiece, but due to its It takes up a lot o...

AI Technical Summary

Problems solved by technology

At present, one type of lifting device commonly used in industrial production is to lift heavy objects through crane cables. It can realize lifting of heavy objects, but it is difficult to realize rotation, tilting and other actions, which cannot meet the needs of industrial production.

[0003] Existing patents such as CN02295585.2 refer to a large-scale equipment closing and centering device, which discloses a large-scale equipment centering device used in the shipbuilding industry, which can complete the attitude adjustment of the six degrees of freedom of the workpiece, but due to its It takes up a lot of space, and the lifting stroke is small, and it will greatly increase the economic cost when used in the general machinery industry.

[0004] Existing patent such as CN87208440U provides a kind of multifunctional movable electric hoist that can finish three kinds of work of crane, press machine and hoist on a set of devices in addition, can finish the lifting control of workpiece, but It is not possible to adjust the attitude of the workpiece such as pitch and rotation

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