A multi-function crane hydraulic system with extended service life

Abstract

The invention relates to the technical field of aluminum electrolysis and particularly relates to a multifunctional overhead crane hydraulic system with prolonged service life. A first oil route block body controlled by a sequence valve is arranged between a main pump and an auxiliary pump; an anode oil cylinder control valve group is provided with a second oil route block body; and a middle-and-low pressure control valve group is provided with a third oil route block body. The hydraulic system has the greatest design advantage that an oil absorption mode of the hydraulic system is optimized, and an oil absorption and filtration device is additionally arranged, so that the service lives of the hydraulic valve group and the hydraulic pump are prolonged, the fault rate of the system is reduced, and safe and stable operation of the equipment is ensured. The multifunctional overhead crane hydraulic system with prolonged service life can be used in work places with relatively poor equipment operation environments, is internally provided with one to two groups of high-pressure valve groups and middle-and-low pressure operating valve groups, and thus can be popularized in mechanical equipment adopting hydraulic systems.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a multifunctional crane hydraulic system capable of prolonging the service life of the crane hydraulic system, with low crane failure rate and stable operation. Background technique [0002] Most of the working performance of the multi-functional crane in the electrolytic workshop of the electrolytic aluminum industry is the power source provided by the hydraulic system designed by the crane itself to complete the needs of various tasks. The special environment of high temperature, high dust, and strong magnetic field in the electrolysis workshop is also the killer of the service life of the hydraulic system. The design of a set of hydraulic system will directly affect the working efficiency of the multifunctional crane in the electrolysis workshop. Our company has used the NKM multi-functional crane and Zhuzhou multi-functional crane for more than 10 years. We foun...

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Problems solved by technology

[0004] (1) The oil filter element is not designed at the oil suction port of the plunger pump of the hydraulic system, so that the cleanliness of the oil entering the hydraulic pump cannot be guaranteed, which is the direct cause of the decrease in the volumetric efficiency of the hydraulic pump, the increase in noise, and the shortened life.

[0005] (2) The oil suction method of the main pump of the NKM crane hydraulic system belongs to the self-priming oil supply design, (the self-priming oil supply design is prone to suction and cause gunshots, and the service life of the hydraulic pump is reduced by 2-3 years, which is harmful to the pump. High vacuum requirements, generally do not use self-priming oil supply design in hydraulic system design)

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