Crane

Abstract

The invention discloses a crane, relates to the field of engineering machinery, and is used for improving the lifting performance of the crane simply and conveniently. The crane comprises a suspended balance weight and a pushing device; the suspended balance weight is suspended; the pushing device is connected with the suspended balance weight; and the pushing device can drive to suspended balance weight to change the amplitude. According to the crane provided by the above technical scheme, the suspended balance weight and the pushing device which drives the suspended balance weight to change the amplitude are provided. When the lifting performance of the crane needs to be improved, the lifting performance of the circular track crane can be greatly improved by changing the amplitude of the suspended balance weight and increasing a balance weight moment; the utilization rate of the whole crane is improved; and greater economic benefit can be brought to users. Besides, the realization mode of changing the amplitude of the suspended balance weight and increasing the balance weight moment is simple; the operability is high; and balance weights do not need to be additionally increased during the whole adjustment process, so that resources are saved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane. Background technique [0002] Super-large lifting equipment is a new type of crane, which has the advantages of large lifting capacity and moment, small ground pressure, and can realize real-time change of the lifting moment of the whole vehicle. It is often used in occasions with large lifting capacity . With the rapid development of the international energy and chemical industry, there are more and more super-large construction projects. Under the premise of considering the cost and the convenience of disassembly and assembly, it is the general trend to greatly increase the lifting capacity of lifting equipment. [0003] Super-large lifting equipment is a lifting equipment that can realize lifting, luffing, and slewing actions, and it is installed on a circular track. The super-large lifting equipment includes a platform, a main arm arranged on the front of the ...

AI Technical Summary

Problems solved by technology

[0006] Method 2: For the full-slewing ring rail crane, the counterweight is fixed on the platform, and the change of the lifting moment of the whole machine is realized by adjusting the diameter of the ring rail. The whole conversion process is very complicated

[0007] Method 3: For semi-rotary ring rail cranes, the counterweight is placed on the ground, and the front trolley of the whole machine rotates around the center of the counterweight, and the position of the counterweight cannot be moved

In this way, the change of the hoisting moment of the ring rail crane is realized by adjusting the distance between the front trolley and the counterweight, and the whole conversion process is very complicated.

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