An energy-storage spherical pump electro-hydraulic actuator

Abstract

The invention discloses an energy storage type electrohydraulic actuator for a spherical pump. The electrohydraulic actuator involves a motor, a spherical pump, and a double-piston rod cylinder assembly. Two oil inlet / outlet ports of the spherical pump are disposed in a cylinder head of the spherical pump. The double-piston rod cylinder assembly comprises an actuating cylinder and double piston rods. A connection block, which is connected to the cylinder head, is disposed on an upper portion of the actuating cylinder, and provided with two axial deflector bolt holes. The actuating cylinder is fixed to the cylinder head by the connection block through the use of two deflector bolts that allows the two oil inlet / outlet ports of the spherical pump to communicate with a working chamber and a non-working chamber at both ends of the actuating cylinder, respectively. The double piston rods are provided with a pressure relief hole, and a floating piston that has one end pre-tightened by means of an energy storage spring and the other end connected to the pressure relief hole to form a pressure relief passage. The energy storage type electrohydraulic actuator for the spherical pump is compact in structure with the floating piston capable of automatically regulating a liquid volume in the closed system, and can be applied to exoskeleton suits and autonomous walking robots.

Description

technical field [0001] The invention belongs to the electro-hydraulic actuator technology, in particular to an energy-storage spherical pump electro-hydraulic actuator. Background technique [0002] Spherical compressor is a new structure variable capacity mechanism in recent years. Its advantages are no intake / exhaust valve, less moving parts, small vibration, high mechanical efficiency, reliable sealing, etc., especially in the field of micro compressors, The mechanical advantages of micro high-pressure pumps are more obvious. After years of continuous research and development, the structure and performance of spherical compressors have been continuously improved and optimized. Spherical pumps are a kind of pump machinery developed on the basis of spherical compressors. [0003] The use of spherical pumps in robot power systems has many advantages, which can reduce the size, weight, and energy consumption of robot power systems; To drive the reciprocating movement of the...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an electro-hydraulic actuator of an energy-storage spherical pump, which can ensure the normal pressure of the system, and at the same time has the characteristics of improving the efficiency of the electro-hydraulic actuator, reducing energy consumption, reducing weight and volume, and Solve the problems of high power and large volume and weight of electro-hydraulic actuators in the prior art

Images