Self-variable elastic hydraulic oil tank and its control method

Abstract

The invention relates to a self-variable elastic hydraulic oil tank, which includes an upper joint, a connecting nut, an exhaust port, an upper outer cylinder, braided fibers, a lower outer cylinder, a lower joint, a fixed flange, an oil inlet and outlet, a spring, and a guide rod And the elastic shell, the upper end of the elastic shell is provided with the upper end joint, the connecting nut and the upper end outer cylinder, the lower end is provided with the lower end outer cylinder, the lower end joint, the fixing flange and the spring, the outside is provided with braided fibers, the inside is provided with a guide rod, the upper end The joint is provided with an exhaust port, and the fixed flange is provided with an oil inlet and outlet port, and a control method is proposed based on this. The invention has the advantages of simple structure, small size, light weight, low cost, safe and reliable operation, ensures the repeatability of the oil tank during operation, is convenient for processing, installation and maintenance, provides a certain pressure for the oil suction port of the pump, and improves the oil suction of the pump port performance.

Description

technical field [0001] The invention belongs to the hydraulic oil tank technology, in particular to a self-variable elastic hydraulic oil tank and a control method thereof. Background technique [0002] The hydraulic oil tank is a container used to store the oil required for the operation of the hydraulic system. Its main function is to store the oil, and at the same time, it also plays the role of dissipating the heat generated by the system operation, precipitating impurities and releasing the gas in the oil. Existing hydraulic oil tanks can be divided into open oil tanks and closed oil tanks according to whether the oil level is in communication with the atmosphere. The traditional open oil tanks are mostly oil tanks made of rigid materials, which occupy a large volume, have poor ability to discharge gas, and have poor installation location. And space requirements are also high, and the oil in the closed tank does not contact the air, and the hydraulic oil has a long work...

AI Technical Summary

Problems solved by technology

Existing hydraulic oil tanks can be divided into open oil tanks and closed oil tanks according to whether the oil level is connected to the atmosphere. Traditional open oil tanks are mostly made of rigid materials, which occupy a large volume and have poor gas discharge capabilities. And space requirements are also high, and the oil in the closed oil tank does not touch the air, and the working life of the hydraulic oil is long

[0003] In the research of related elastic hydraulic oil tanks, in the oil tank patent (CN111102250A) that uses rubber material as the shell to realize variable capacity, the oil tank uses a spring to drive the output of the oil under pressure, and realizes the oil in and out at the same time, but the internal pressure of the oil tank is limited by the spring Rigidity, complex structure, poor sealing, difficult processing, installation and maintenance; not only that, due to the structural characteristics of the elastic oil tank, it cannot be adapted to occasions with small radial dimensions

In addition, in the elastic hydraulic oil tank patent (CN111963498A), due to the creep characteristics of rubber, the repeatability of the oil tank is low, and its upper cover and lower cover are fixed. When the oil tank is working, the box expands, the height remains unchanged and the diameter increases, resulting in rubber Material life and safety are difficult to guarantee

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