A sliding balance counterweight device and a crane

Abstract

The invention discloses a sliding balance weight device and a crane. A lower supporting frame is arranged at the tail of the crane and is fixedly connected with a frame of the crane; an upper supporting frame is slidably connected with the lower supporting frame; a balance weight body device is fixedly connected with the upper supporting frame; two ends of an oil cylinder are respectively hinged with the upper supporting frame and the frame of the crane; the upper supporting frame is driven by telescoping of the oil cylinder to slide forwards and backwards relative to the lower supporting frame. According to the sliding balance weight device and the crane, a balance weight slides backwards, so that the stabilizing moment of the whole crane is increased, the stability of the whole crane under the conditions of large arm length and large amplitude is effectively improved, the weight and the length of the whole crane are reduced, the maneuvering flexibility of the whole crane is improved, the balance weight is light, the cost is reduced, and the weight of the whole crane is reduced.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a sliding type balance counterweight device and a crane. Background technique [0002] The balance counterweight device or balance weight device is an important operating part of the construction crane. The traditional balance weight is directly fixed to the rear of the frame through bolts, and the balance moment is a fixed value. For example, the container reach stacker crane (hereinafter referred to as reach stacker) is a special machine used for container loading, unloading, stacking and horizontal transportation, and is widely used in the lifting and transshipment of heavy objects in docks, ports, warehouses and other places. Such as figure 1 As shown, the heavy object 1 is hoisted at the front, and the balance weight 3 is directly fixed at the rear of the vehicle frame by bolts. When lifting heavy objects, the center of gravity of the whole vehicle moves forw...

AI Technical Summary

Problems solved by technology

Since the balance moment is a fixed value, there is a danger of the crane tipping over when the container is heavy or the load is suddenly braked, which restricts the crane when transporting heavy objects and the lifting performance cannot be fully to play

At this time, it is required to increase the weight of the counterweight or the length of the car body to increase the balance moment, which will increase the weight or length of the whole vehicle, affect the stability of the whole vehicle, and conflict with the required flexibility concept

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