Balancing weight hitching device and crane

Abstract

The invention relates to a balancing weight hitching device and a crane. The balancing weight hitching device comprises a power source and a connecting frame assembly, wherein the connecting frame assembly is fixedly arranged in a balancing weight. The connecting frame assembly comprises a base, lifting mechanisms and positioning mechanisms, wherein the base is fixedly connected with the balancing weight, the lifting mechanisms are installed on the base, and every two positioning mechanisms are symmetrically arranged on the two sides of the corresponding lifting mechanism. Each lifting mechanism comprises a lifting cylinder and a hitching hole which is formed in the free end of a cylinder rod of the lifting cylinder. Each positioning mechanism comprises a guiding hitching support and a fixing hole which is formed in the free end of the guiding hitching support. The power source drives the cylinder rods of the lifting cylinders to conduct lifting movement. By the adoption of a novel hitching mode, an operating system is simplified, the energy loss is low, the cost is reduced, and the balancing weight hitching device has the quite high economic value. Meanwhile, due to the fact that the balancing weight hitching device is connected with the crane through a hinge pin, the safety and the reliability are achieved, the damage caused by the impact of the hitched balancing weight to an oil cylinder in the travelling process is avoided, and the crane with the balancing weight hitching device has the higher safety performance and the lower production and operation cost.

Description

technical field [0001] The invention relates to a hitch device, in particular to a hitch device for a balance weight, and belongs to the technical field of engineering machinery. Background technique [0002] During the transfer process of medium and large tonnage cranes, due to weight restrictions, the counterweight generally needs to be dismantled and transferred. At present, a self-fixing plane mount is generally used to mount the balance weight. This form generally requires a balance weight cylinder to realize. The structure is as follows: figure 1 As shown, during the hooking process, the balance weight 1' is placed on a fixed plane, the balance weight cylinder 2' is placed above the balance weight 1', and the balance weight is lifted and lowered through the expansion and contraction of the oil cylinder, so as to realize its connection with the turntable 3 'The connection is fixed. [0003] After the balance weight of the device is hooked, the balance weight cannot be...

AI Technical Summary

Problems solved by technology

[0003] After the balance weight of the device is connected, the balance weight cannot be attached to the rear end of the turntable due to the unloading of the oil cylinder, and there will be a shaking phenomenon, which will cause great safety hazards to the oil cylinder itself and the operation safety.

At the same time, the device requires a complete set of hydraulic and electrical systems. Hydraulic systems such as control valves, diverter valves, and balance valves in the hydraulic system cause energy loss on the one hand, and increase the cost of the hydraulic system on the other hand; Realization also requires related control programs and control devices, making the system complex and reducing reliability

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