Large-sized crawler crane

Abstract

The invention discloses a large-sized crawler crane. The large-sized crawler crane comprises a chassis assembly, a rotating platform assembly and a crawler crane assembly, wherein the rotating platform assembly is arranged on a frame of a chassis; the crawler crane assembly is arranged on the rotating platform assembly. The chassis assembly comprise a frame, two crawler beams which is fixedly connected with the frame, and an external crawler frame which can be inserted into the crawler beams; the crawler beams and the frame form an H-shaped structure; the crawler beams and the external crawler frame are respectively of hollow box type structures with rectangular cross sections; parts for mounting a crawler are respectively arranged on the crawler beams and the external crawler frame; the matched guide rails are respectively arranged inside the crawler beams and outside an external crawler frame box body; devices which are mutually fixed and positioned are respectively arranged on the crawler beams and the external crawler frame. The large-sized crawler crane disclosed by the invention has better stability and excellent traveling and climbing capabilities; the requirements of transportation and various operation fields can be met, and ground specific pressure can be reduced.

Description

Technical field [0001] The invention relates to a large crawler crane. Background technique [0002] With the wave of domestic and foreign infrastructure construction, the demand for large crawler cranes is increasing. Especially for the construction of high-speed rail, subway projects, road bridges and offshore and onshore wind power businesses, the demand for crawler cranes has also increased. In the existing crawler crane manufacturing, the chassis uses two crawlers to contact the ground. With the increase in lifting and debugging and construction requirements, most domestic OEMs adopt the method of increasing the chassis structure size and crawler width to meet the requirements. The machines manufactured in this way have drawbacks. It is mainly manifested in some large crawler cranes. Due to the larger output torque, the structure and weight of the whole machine are increased, and the center of gravity of the whole machine structure is increased. The stability of the whole m...

AI Technical Summary

Problems solved by technology

Although this patent can better solve the deficiencies in the existing technology, the width of the equipment is greatly increased due to the two crawler tracks on the outer frame, so that it will be affected by road conditions when the equipment is transported or when the equipment is transferred. limit

In addition, when this kind of equipment works in special working occasions, such as when working in a soft ground work area, although the stability of the equipment in operation is better than that of the prior art, there may still be insufficient stability due to its definite supporting moment. The problem

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