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External-rotor radial plunger hydraulic pump integrated with motors

A technology of radial columns and external rotors, which is applied to pumps, multi-cylinder pumps, mechanical equipment, etc., can solve the problems of many energy transmission links, the decrease of pump volume efficiency, and the easy generation of air bubbles in oil, so as to improve the utilization of energy High efficiency, avoiding the decline of volumetric efficiency, and high energy utilization

Inactive Publication Date: 2015-06-03
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional radial piston hydraulic pump, the distribution shaft and the rotor are two independent parts. In order to ensure that the rotor can rotate well during the working process, there must be a certain gap between it and the distribution shaft, and the oil flows from the gap. The leakage of the pump will cause the decline of the volumetric efficiency of the pump; the traditional radial piston hydraulic pump, in operation, each plunger chamber and the oil inside are rotating with the transmission shaft at high speed, and the oil in the chamber is easy to produce air bubbles. Further cause the loss of volumetric efficiency; in order to drive the traditional radial piston hydraulic pump, it needs to be connected with the output shaft of the motor through the transmission mechanism. loss

Method used

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  • External-rotor radial plunger hydraulic pump integrated with motors
  • External-rotor radial plunger hydraulic pump integrated with motors
  • External-rotor radial plunger hydraulic pump integrated with motors

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] refer to figure 1 and figure 2 , an outer rotor radial plunger hydraulic pump integrated with a motor, including a first outer end cover 25 and a second outer end cover 3, the first outer end cover 25 and the second outer end cover 3 are arranged oppositely, through two More than two connecting rods 27 are connected and locked with round nuts to form an overall structure and be fixed to the ground. The pump stator 11 is installed inside the overall structure, and the shafts on both sides of the pump stator 11 are connected from the first outer end cover 25 and the The square through hole in the center of the two outer end covers 3 protrudes, and the protruding part is locked with a round nut. In the matching part, planes are cut out on the shafts on both sides of the pump stator 11, and the first outer end cover 25 and the second The square through hole in ...

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Abstract

An external-rotor radial plunger hydraulic pump integrated with motors is of a external-rotor and internal-stator structure. The inside of a rotor is fixedly provided with a radial equidistant cam which is used for absorbing oil and pressing oil. When the cam is driven by the rotor to rotate, the rotation is converted into a linear reciprocating motion by a bearing and a plunger pin to obtain high-pressure oil liquid; the oil distribution in every plunger cavity is achieved through a one-way cone valve which is arranged on a stator, and the opening and the closing of the one-way valve are controlled through the pressure inside the plunger cavity; and the external-rotor radial plunger hydraulic pump is driven to operate by disk motors which are arranged on both sides of a pump body, the stator of each disk motor is fixed connected to the floor, the rotors of the disk motors are designed into one part with the rotor of the external-rotor radial plunger hydraulic pump, so that the integrated design of the motors and the external-rotor radial plunger hydraulic pump is achieved. The external-rotor radial plunger hydraulic pump integrated with the motors has the advantages of being compact in structure, simple in transmission, symmetric in force bearing, high in energy utilization rate, high in volume efficiency and pump-motor-integrated.

Description

technical field [0001] The invention belongs to the technical field of radial plunger hydraulic pumps, in particular to an outer rotor radial plunger hydraulic pump integrated with a motor. Background technique [0002] The hydraulic pump used to provide high-pressure oil with stable flow and pressure for the hydraulic system is a key component in the hydraulic transmission system. Radial piston hydraulic pumps are widely used due to their significant advantages of small wear, large displacement, and high volumetric efficiency. In highly dynamic hydraulically operated applications such as: die casting and injection molding technology. For some industries that operate at high pressure, such as injection molding machines in the plastics industry and die-casting departments in the automotive industry, the application of radial piston hydraulic pumps will become the main trend in the future, and it will also be more widely used in metallurgy and mining in the future. , forging,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/047
Inventor 赵升吨郭桐张晨阳范淑琴
Owner XI AN JIAOTONG UNIV
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