Hydraulic control loop of mechanical arm and action method

Abstract

The invention discloses a hydraulic control loop of a mechanical arm and an action method, and belongs to the field of hydraulic loop control over the mechanical arms. The hydraulic control loop of the mechanical arm comprises a general hydraulic loop, a lifting hydraulic loop, a rotary hydraulic loop and a swinging hydraulic loop, wherein the general hydraulic loop comprises an oil tank, an oil filter, a motor, a load sensitive pump, a shuttle valve group, a safety valve, a pressure meter, a pressure meter switch and a cooler; the oil tank is connected with an oil inlet of the load sensitive pump through the oil filter; an oil outlet of the load sensitive pump is connected with the oil tank through the safety valve; hydraulic oil is pumped out of the oil tank through the load sensitive pump via the oil filter; and one path of the hydraulic oil is connected with the pressure meter and the pressure meter switch, and the other path of the hydraulic oil is connected with the lifting hydraulic loop, the rotary hydraulic loop and the swinging hydraulic loop respectively through a main oil pipe and finally is connected with the oil tank through the cooler and the oil filter. The hydraulic control loop of the mechanical arm is safe and low in system power loss and can meet the self-locking property of a hydraulic arm and prevent overspeed instability of an oil cylinder during retraction.

Description

technical field [0001] The invention relates to the field of hydraulic circuit control of a mechanical arm, in particular to a hydraulic control circuit and an action method of a mechanical arm. Background technique [0002] The robotic arm is an industrial operating device that imitates the human arm. The robotic arm can grab and carry objects or operate tools according to a fixed program through the front gripper or other devices. It can replace the heavy and repetitive labor of humans to realize the mechanization of production. And automation, can operate in a harmful environment to protect personal safety, so it is widely used in machinery manufacturing, metallurgy, electronics, light industry and atomic energy and other departments. The hydraulic system is the core control system of the hydraulic circuit of the manipulator, which directly determines the action performance of the whole manipulator. Designers mainly consider the function and production cost of the hydrau...

AI Technical Summary

Problems solved by technology

[0004] The application publication number is CN105332959A for a hydraulic control circuit of a handling manipulator. Its lifting hydraulic control circuit is not involved in overcoming the instability of the descending speed, and its safety performance needs to be improved.

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