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A Closed Hydraulic Circuit Double Hydraulic Cylinder Actuator System

A hydraulic circuit and double hydraulic cylinder technology, which is applied in fluid pressure actuation system components, fluid pressure actuation devices, servo meter circuits, etc., can solve problems such as high maintenance costs, inability to recover energy, and insufficient adaptability, and achieve Effects of reduced volume, improved work performance, and reduced installed displacement

Active Publication Date: 2021-09-21
FUJIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Existing hydraulic actuators need to use valve control, there is energy waste such as overflow loss, energy cannot be recovered, and speed and hydraulic pressure cannot be switched on demand
[0005] 2. The single-pump system has high requirements on the performance of the servo motor, insufficient adaptability, and high maintenance costs

Method used

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  • A Closed Hydraulic Circuit Double Hydraulic Cylinder Actuator System
  • A Closed Hydraulic Circuit Double Hydraulic Cylinder Actuator System
  • A Closed Hydraulic Circuit Double Hydraulic Cylinder Actuator System

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Embodiment Construction

[0028] specific implementation plan

[0029] The hydraulic principle diagram of the technical scheme of the present invention is as follows figure 1 Shown:

[0030] 1. Load; 2. 16. Hydraulic cylinder; 2. One-way valve; 3. Relief valve; 4. Two-position two-way solenoid valve; 5. Variable speed motor; 6. 8. Clutch; 7. Two-way quantitative pump / motor ;9. Small displacement two-way quantitative pump; 10. Hydraulic bridge rectifier circuit; 11. Accumulator; 12. Overflow valve; 13. Overflow valve; 14. One-way valve; 15. Two-position three-way solenoid valve ;

[0031] Such as figure 1 As shown, the hydraulic system includes two hydraulic cylinders, a small-displacement bidirectional quantitative pump 9 , a hydraulic bridge rectifier circuit 10 , an accumulator 11 , and an overflow valve 12 to form an oil supply unit. In the 10 hydraulic bridge rectification circuit composed of four hydraulic check valves in the oil supply unit, the oil outlets of the two check valves are connect...

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Abstract

The present invention proposes a closed hydraulic circuit double hydraulic cylinder actuator system, including the first hydraulic cylinder and the second hydraulic cylinder acting on the load, the 2 hydraulic cylinders are connected to the bidirectional quantitative pump / motor, and the bidirectional quantitative pump / motor A variable-speed motor is connected through a clutch, and the feature is that the system also includes an oil supply unit, and the oil supply unit includes a hydraulic bridge rectifier circuit connected with an accumulator, an overflow valve and a small displacement Two-way quantitative pump; the small-displacement two-way quantitative pump is connected to the two-way quantitative pump / motor through a clutch; the rod chambers of the two hydraulic cylinders are connected to the two-way quantitative pump / motor; the variable speed motor, clutch and each solenoid valve are controlled by the host computer Perform signal control.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a double hydraulic cylinder actuator system of a closed hydraulic circuit. Background technique [0002] The development of the hydraulic system to the present, there are mainly three types of mature hydraulic systems classified according to the control form: ordinary control system, proportional control system, and servo control system. Proportional control system and servo control system are automatic hydraulic control systems with good stability, fast dynamic response and high accuracy. They are mainly used in various medium and high-end hydraulic machinery and devices. Naturally, they are expensive and difficult to maintain. Strict requirements on the use environment. In industrial production, the hydraulic system of many production equipment does not require the response time, speed and other performance from the manufacturability of the product, but it needs closed-loop au...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/024F15B11/16F15B11/17F15B13/06F15B1/02F15B21/14F15B21/00
CPCF15B1/02F15B11/024F15B11/161F15B11/17F15B13/06F15B21/001F15B21/14F15B2211/20584F15B2211/7053F15B2211/7656
Inventor 张树忠唐一文练国富晏岱陈丙三
Owner FUJIAN UNIV OF TECH
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