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Closed hydraulic circuit double-hydraulic-cylinder actuator system

A technology of hydraulic circuit and dual hydraulic cylinders is applied in the components of fluid pressure actuation system, fluid pressure actuation device, servo meter circuit, etc. The effect of reducing the volume, reducing the installed displacement, and improving the working performance

Active Publication Date: 2020-06-02
FUJIAN UNIV OF TECH
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  • Summary
  • 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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  • Closed hydraulic circuit double-hydraulic-cylinder actuator system
  • Closed hydraulic circuit double-hydraulic-cylinder actuator system
  • 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 invention discloses a closed hydraulic circuit double-hydraulic-cylinder actuator system. The closed hydraulic circuit double-hydraulic-cylinder actuator system comprises a first hydraulic cylinder and a second hydraulic cylinder which act on the load, the two hydraulic cylinders are connected to a two-way quantitative pump / motor, the two-way quantitative pump / motor is connected with a variable speed motor through a clutch, the closed hydraulic circuit double-hydraulic-cylinder actuator system is characterized in that an oil supplementing unit is further included, and comprises a hydraulicbridge rectifier circuit, and the hydraulic bridge rectifier circuit is connected with an energy accumulator, an overflow valve and a small-displacement two-way quantitative pump; the small-displacement two-way quantitative pump is connected with the two-way quantitative pump / motor through the clutch; the rod cavities of the two hydraulic cylinders are correspondingly connected to the two-way quantitative pump / motor; and the variable speed motor, the clutch and each solenoid valve are all subjected to signal control by a host controller.

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 Applications(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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