Differential type electric-hydraulic proportional uniform-pressure-drop valve
A constant differential pressure reducing valve, electro-hydraulic proportional technology, applied in the field of hydraulic components, can solve the problems of reducing the balance force of the valve core, large thrust of the proportional electromagnet, and reducing the thrust of the proportional electromagnet, etc.
Inactive Publication Date: 2017-12-12
BEIHANG UNIV
View PDF5 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to propose a differential electro-hydraulic proportional constant with a new structure in view of the problems of excessive balance force of the relief valve spool caused by high pressure in the hydraulic system and large volume of the proportional electromagnet caused by excessive electromagnetic force. Differential pressure reducing valve to reduce the balance force of the spool, thereby reducing the volume of the electro-hydraulic proportional pressure reducing valve
[0007] Aiming at the problem that the proportional electromagnet thrust of the electro-hydraulic proportional pressure reducing valve is large, the present invention proposes a differential electro-hydraulic proportional differential pressure reducing valve, which can effectively reduce the thrust of the proportional electromagnet
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
[0031] A new type of electro-hydraulic proportional differential pressure reducing valve proposed by the present invention can be used in the adjustment of the displacement of the variable pump of the double-variable electric drive hydrostatic actuation system. The schematic diagram of hydrostatic actuation system is as follows: figure 2 shown.
[0032] figure 2 When the dual-variable fly-by-wire hydrostatic actuation system shown works, the motor 8 rotates to drive the output flow of the variable pump 9, and part of the output flow of the variable pump 9 flows to the double-acting cylinder 17, which drives the double-acting cylinder 17 to make a linear motion, thereby driving the rudder surface 18 movement; the other part enters the single-acting cylinder 10 through the shuttle valve 12 and the electro-hydraulic proportional differential pressure reducing valve 11, and the single-acting cylinder 10 makes a linear motion to drive the swash plate of the variable pump 9 to ro...
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 relates to a novel structure of a novel differential type electric-hydraulic proportional uniform-pressure-drop valve. The differential type electric-hydraulic proportional uniform-pressure-drop valve comprise a valve core, a valve cavity, a proportion electro-magnet and a valve rod, wherein the valve core is provided with a valve core connecting portion located on the upper end of the valve core, the upper and middle portions of the valve core providing a differential area and the lower portion of the valve core located on the lower end of the valve core; an inlet channel, the valve cavity, an outlet channel or an oil return port channel form a fluid channel; the proportion electro-magnet provides an electromagnetic force to ensure the pressure difference between the inlet and the outlet of the differential type electric-hydraulic proportional uniform-pressure-drop valve to change continuously along with an electric signal; and the valve rod extends in the valve body and moves along the longitudinal axis of the valve rod, and the valve rod is provided with a first end and a second end. The differential type electric-hydraulic proportional uniform-pressure-drop valve provided by the invention is simple in structure and easy to maintain. The electromagnetic force of the proportion electro-magnet is effectively reduced according to the design of the pressure difference structure of the electric-hydraulic proportional uniform-pressure-drop valve, so that the volume of the proportion electro-magnet is reduced and the volume of the whole electric-hydraulic proportional uniform-pressure-drop valve is reduced.
Description
technical field [0001] The invention relates to hydraulic components, more specifically to a new structure of a differential electro-hydraulic proportional differential pressure reducing valve. Background technique [0002] The continuous development of modern industry has put forward higher and higher requirements for hydraulic valves in terms of automation, precision, and response speed. Traditional on-off or fixed-value control hydraulic valves can no longer meet the requirements. Therefore, electro-hydraulic servo valves have been developed. It has the advantages of flexible control, high precision, and good speed, but the cost of electro-hydraulic servo valves is high, and the conditions for application and maintenance are harsh. Electro-hydraulic proportional valves are developed on the basis of electro-hydraulic servo technology. Simple, lower manufacturing and maintenance costs than servo valves, so it is more and more widely used in the field of hydraulic control sy...
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 IPC IPC(8): F16K11/07F16K27/04F16K3/314F16K3/30F16K31/06F15B13/02
CPCF16K11/07F15B13/025F16K3/30F16K3/314F16K27/041F16K31/0613
Inventor 李运华李洋洋杨丽曼张鹏
Owner BEIHANG UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap