Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A pilot-operated relief valve and magneto-rheological technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problem of small damping force, achieve good anti-wear performance, improve magnetic induction intensity, reduce noise effect
Inactive Publication Date: 2012-03-14
KUNMING UNIV OF SCI & TECH
View PDF6 Cites 12 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
At present, the existing magneto-rheological valves are all direct-acting valves, and the damping force generated by them is relatively small. As a relief valve, they can only be used in hydraulic systems with low pressure and small flow.
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited to the stated scope.
[0020] Implementation column 1: As shown in the figure, a magneto-rheological pilot relief valve consists of a pilot valve body 8, a damping block 10, a spring 12, a guide rod 14, a main valve sleeve 15, a main valve core 16, and a main valve seat 18, main valve body 19, damper 20, plug 21 form main valve. A pilot valve is also connected to the outlet of the main valve.
[0021] The pilot valve includes an end cover 1 , a magneto-rheological valve casing 3 , a coil 4 , an iron core 5 and a valve core 7 . The iron core 5 is installed in the magneto-rheological valve housing 3. The core 5 has a through-hole structure on which the coil 4 is wound. The valve core 7 is inserted into the hole of the iron core 5. The iron core 5 and the valve core 7 A working gap 6 is formed betwee...
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 provides a magnetorheological pilot-operated overflow valve belonging to the technical field of hydraulic drive. The magnetorheological pilot-operated overflow valve comprises an end cover, an end cover seal ring, a magnetorheological valve housing, a coil, an iron core, a valve core, a pilot-operated valve body, a pilot-operated seal ring, a damp piece, a main valve housing seal ring, a spring, a guide rod seal ring, a guide rod, a main valve housing, a main valve core, a main valve seat insert, a main valve seat, a main valve body and a damper. The main valve core is in a parabolic ball shape, and the half cone angle of the valve core is larger than that of the valve seat, thus, the pressure difference between an inlet and an outlet of a cone valve can be effectively reduced; the minimum negative pressure moves backwards along a liquid flow direction, appears at the back of the valve core and is avoided appearing in the valve seat, thus, the possibility of gas etching is reduced, noise is reduced, key parts of the valve core and the valve seat are protected, and the service life of the magnetorheological pilot-operated overflow valve is prolonged.
Description
technical field [0001] The invention relates to a magneto-rheological pilot overflow valve, which belongs to the technical field of hydraulic transmission. Background technique [0002] Magnetorheological fluid is a functional fluid, which has both the fluidity of fluid and the plasticity of solid, and can realize the transition between solid and liquid in a very short time. By adjusting the magnitude of the applied magnetic field strength, the rheological properties such as viscosity and elasticity of the magnetorheological fluid can be changed rapidly. This transformation is reversible, and the viscosity can be changed steplessly with the change of the magnetic field strength. The size changes the magnetic field strength, thereby realizing the control of its mechanical properties. The magnetorheological valve designed according to the rheological characteristics of magnetorheological fluid can realize the intelligent control of pressure and flow. At present, the exis...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more