Hydraulic two-stage oil source for supplying energy through two-stage energy accumulator

Abstract

The invention relates to the technical field of robots, and discloses a hydraulic two-stage oil source for supplying energy through a two-stage energy accumulator. The hydraulic two-stage oil source comprises the energy accumulator, a switching valve A, a switching valve B, a constant displacement pump and an overflow valve. The energy accumulator comprises a high-pressure energy accumulator bodyand a low-pressure energy accumulator body. Through the arrangement of the high-pressure energy accumulator body and the low-pressure energy accumulator body, the degrees that gas is compressed in theoil charge process and the oil drainage process are different, and the oil pressure in the energy accumulator changes constantly; when the working cycle of the energy accumulator is smaller than 3 min, it can be considered that the energy accumulator works under the adiabatic condition; when the energy accumulator serves as an auxiliary power source, the inflation pressure should be lower than 90% of the lowest work pressure and higher than 25% of the highest work pressure, at this moment, the pressure change range in the energy accumulator does not exceed 20% of the work pressure, and the energy supply requirement of a hydraulic drive unit is met; and in the process that the energy accumulator stores and releases energy, less energy is lost, the requirement of a quadruped robot hydraulicsystem for energy consumption is completely met, and reasonable parameter selection is achieved.

Description

technical field [0001] The invention relates to the technical field of robots, in particular to a hydraulic two-stage oil source that uses two-stage accumulators for energy supply. Background technique [0002] During the operation of the quadruped robot, it is necessary to supply energy through the hydraulic drive unit, and in the control characteristics of the hydraulic drive unit, the use of lower oil supply pressure is beneficial to reduce system energy consumption and improve system efficiency, while the existing The hydraulic drive unit only uses a single pressure oil to supply energy, which will lead to a large throttling loss. Therefore, there is an urgent need for a hydraulic two-stage oil source powered by two-stage accumulators to complete the method of using two pressure oils to supply energy to the hydraulic drive unit, and to solve the problem of high mass and flow pulsation in the hydraulic pump. Contents of the invention [0003] (1) Solved technical probl...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the quadruped robot, it is necessary to supply energy through the hydraulic drive unit, and in the control characteristics of the hydraulic drive unit, the use of lower oil supply pressure is beneficial to reduce system energy consumption and improve system efficiency, while the existing The hydraulic drive unit only uses a single pressure oil to supply energy, which will lead to a large throttling loss

Therefore, there is an urgent need for a hydraulic two-stage oil source powered by two-stage accumulators to complete the method of using two pressure oils to supply energy to the hydraulic drive unit, and to solve the problem of large hydraulic pump mass and flow pulsation

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