Crane chassis structure with bidirectional piston rod

Abstract

The invention discloses a crane chassis structure with a bidirectional piston rod. The crane chassis structure comprises a chassis and a turntable structure, wherein a turntable is arranged on the chassis; the chassis and the turntable are supported by a supporting mechanism which comprises a main supporting mechanism and an auxiliary supporting mechanism; the main supporting mechanism is arranged at the central position of the chassis; the auxiliary supporting mechanism comprises two hydraulic oil cylinder systems which are respectively arranged on the edges of the chassis; each hydraulic oil cylinder system comprises a hydraulic cylinder with the bidirectional piston rod; the upper end and the lower end of the hydraulic cylinder with the bidirectional piston rod are connected with the turntable and the chassis by adopting lifting lugs with bearings. According to the main supporting mechanism and the auxiliary supporting mechanism, part of a gap between the chassis and the turntable is adjusted by the hydraulic cylinders of the auxiliary supporting mechanism, so that the turntable is maintained on one horizontal surface all the time; the side turning of a crane due to the center-of-gravity shift caused by the suspension of a heavy object, the weight of the suspension arm and the like of the crane, and the torque shift caused by the center-of-gravity shift of the heavy object is prevented; the performance of the crawler crane is improved.

Description

technical field [0001] The invention relates to an engineering machine, in particular to a crane chassis structure with bidirectional piston rods. Background technique [0002] Crawler crane is a kind of self-propelled crane used in high-rise building construction, and it is a kind of boom rotating crane that uses crawler walking. The track has a large grounding area, good passability, strong adaptability, and can walk with a load, which is suitable for hoisting operations on construction sites. It can be used for digging, ramming, piling and other operations. [0003] The crawler crane is composed of a power unit, a working mechanism, a boom, a turntable, and a chassis. Since the crane is used for hoisting heavy objects, the center of gravity is shifted due to the suspension of the heavy objects, and the weight of the cantilever of the crane. The offset of the moment caused by the shift will easily cause the crane to roll over. Therefore, the weight of the chassis mus...

AI Technical Summary

Problems solved by technology

[0003] The crawler crane is composed of a power unit, a working mechanism, a boom, a turntable, and a chassis. Since the crane is used for hoisting heavy objects, the center of gravity is shifted due to the suspension of the heavy objects, and the weight of the cantilever of the crane. The offset of the moment caused by the shift will easily cause the crane to roll over. Therefore, the weight of the chassis must be increased to ensure the safety of the crane. However, excessive weight will cause the load of the crane's traveling mechanism and also cause the crane to damage the road surface. Larger, but also have a greater impact on the operating environment of the crane

If the weight of the chassis is reduced, the load capacity of the crane will be reduced.

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