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A pump-controlled hydraulic cylinder with integrated external rotor motor

An external rotor motor and hydraulic cylinder technology, applied in the field of pump-controlled hydraulic cylinders, can solve the problems of difficult volume compression and complicated structure, and achieve the effect of excellent heat dissipation performance and small volume

Active Publication Date: 2022-02-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional electro-hydraulic joint control, motors, oil pumps, oil tanks, various valves, hydraulic cylinders and other links are indispensable, the structure is relatively cumbersome, and the volume is difficult to compress

Method used

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  • A pump-controlled hydraulic cylinder with integrated external rotor motor
  • A pump-controlled hydraulic cylinder with integrated external rotor motor
  • A pump-controlled hydraulic cylinder with integrated external rotor motor

Examples

Experimental program
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as Figure 1~3 As shown, a pump-controlled hydraulic cylinder integrating an outer rotor motor includes an outer rotor motor 1 and a hydraulic circulation system 2; the outer rotor motor 1 includes a motor rotor 11, a motor stator 12 and a rolling bearing 13; the hydraulic circulation system 2 Including hydraulic cylinder 21, two-way oil pump 22, oil pipe 23, radiator 24 and oil tank 25; said hydraulic cylinder 21 is arranged inside the stator 12 of outer rotor motor 1, and one of the rodless cavity of said hydraulic cylinder 21 and two-way oil pump 22 The oil port is connected through the first oil pipe 26, and the rod cavity of the hydraulic cylinder 21 is connected with the other oil port of the two-way oil pump 22 through the second oil pipe 23, and the pump shaft of the two-way oil pump 22 is connected with the rotor of the outer rotor motor 1 connect...

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PUM

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Abstract

The present invention proposes a pump-controlled hydraulic cylinder integrating an outer rotor motor, which includes an outer rotor motor and a hydraulic circulation system. The hydraulic circulation system includes a hydraulic cylinder, a two-way oil pump, an oil pipe, a radiator, and an oil tank. Inside the stator of the outer rotor motor, the rodless chamber of the hydraulic cylinder is connected to one of the oil ports of the two-way oil pump through the first oil pipe, and the rod chamber of the hydraulic cylinder is connected to the other oil port of the two-way oil pump through the second oil pipe. The pump shaft of the two-way oil pump is connected with the rotor of the outer rotor motor through transmission. In the present invention, the hydraulic cylinder is placed inside the stator of the outer rotor motor, so that the hydraulic oil flows through the inside of the stator, and the radiator installed on the second oil pipe is used to make the heat dissipation performance of the outer rotor motor better, and at the same time, the combined electro-hydraulic control The system is smaller.

Description

technical field [0001] The invention belongs to the technical field of hydraulic systems and external rotor motors, and in particular relates to a pump-controlled hydraulic cylinder integrated with external rotor motors. Background technique [0002] At present, motors can be divided into two types: inner rotor motors and outer rotor motors. The inner rotor motors have a higher speed and smaller torque; the outer rotor motors are the opposite. In practical applications, the external rotor motor has large torque, high efficiency, and simple peripheral equipment, which plays an irreplaceable role. However, due to the built-in stator of the outer rotor motor, its heat dissipation effect is not as good as that of the inner rotor motor, which hinders the application of the outer rotor motor. [0003] Compared with the electrical system, the hydraulic system has the advantages of high power and easy linear motion. In the traditional electro-hydraulic joint control, motors, oil p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08F15B21/0423H02K9/19
CPCF15B11/08F15B21/0423H02K9/19F15B2211/62F15B2211/205
Inventor 孙乐陈龙淼李霄翔邹权
Owner NANJING UNIV OF SCI & TECH