Hydraulic control valves and hydraulic systems
A technology of hydraulic control valves and control valves, applied in fluid pressure actuators, servo motors, servo motor components, etc. Unstable oil flow and other problems
Active Publication Date: 2018-10-16
JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The multi-way valve in the prior art directly connects the pump outlet of the hydraulic pump with the hydraulic actuator through the reversing valve. When the oil inlet pressure fluctuates violently, the oil inlet flow of the reversing valve is unstable, which affects the operation accuracy.
[0004] In addition, the multi-way valve in the prior art cannot realize the independent adjustment of the inlet flow and the oil return pressure, and consumes a lot of energy
Moreover, the structure of the multi-way valve in the prior art is complicated, and it needs to be customized for different actuators, which has poor versatility, so the processing is difficult and the adaptability is poor.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of descriptio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention disclosesa hydraulic control valve and a hydraulic system. The hydraulic control valve comprises a working link, wherein the working link is provided with an oil inlet, a first working oil port, a second working oil port and an oil discharging port and comprises an oil inlet control valve, a main control valve and a pressure compensating valve, the oil inlet control valve delivers oil to the main control valve through the pressure compensating valve, the pressure compensating valve controls the pressure difference between a second oil port of the oil inlet control valve and a first oil port of the oil inlet control valve to be a set value. The hydraulic control valve can control the pressure difference between the second oil port of the oil inlet control valve and the first oil port of the oil inlet control valve to be the set value, so that output flow of the oil inlet control valve is not influenced by the pressure of the oil inlet of the working link, accordingly the stability of the output flow is improved, and he operating accuracy of a mainframe is improved.
Description
technical field [0001] The invention relates to the field of engineering machinery, in particular to a hydraulic control valve and a hydraulic system. Background technique [0002] In the field of construction machinery, the engine usually drives the hydraulic pump to deliver hydraulic oil to the multi-way valve, and then the multi-way valve transfers the hydraulic oil to the hydraulic cylinder or hydraulic motor to realize the various operating functions of the main engine. As the core control element of the hydraulic system, the performance of the multi-way valve is very important to the energy-saving, stability and operation accuracy of the main engine. [0003] The multi-way valve in the prior art directly connects the pump outlet of the hydraulic pump to the hydraulic actuator through the reversing valve. When the oil inlet pressure fluctuates violently, the oil inlet flow of the reversing valve is unstable, which affects the operation accuracy. [0004] In addition, t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/06F15B13/02F15B11/16
CPCF15B11/161F15B11/165F15B13/026F15B13/06
Inventor 赵燕韩家威刘凯磊
Owner JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD