Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Magneto-rheological damper

A magneto-rheological shock absorber and magnetic core technology, which is applied in the direction of shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problems of leakage at coils and wire leads, inconvenient maintenance and inspection, and viscous damping force Low-level problems, to achieve the effect of good sealing, compact structure, and avoid leakage

Active Publication Date: 2013-02-06
CIVIL AVIATION UNIV OF CHINA
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used magneto-rheological shock absorber is a coil built-in type, which is widely used because of its compact structure and small magnetic flux leakage, but its disadvantages are that the piston structure is relatively complicated, and the heat dissipation is poor. Leakage, inconvenient maintenance and inspection; In addition, the traditional magneto-rheological shock absorber with built-in coil generally places the coil inside the piston and needs to be guided by an additional guide plate, so its viscous damping force is generally low

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
  • Magneto-rheological damper
  • Magneto-rheological damper
  • Magneto-rheological damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The magneto-rheological shock absorber provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Such as Figure 1-Figure 4 As shown, the magneto-rheological shock absorber provided by the present invention includes a cylinder 1, a left end cover 2, a piston rod 3, a piston 4, a right end cover 5, a connecting cylinder 6, a bobbin 7, a coil 8, an external magnetic conductor 9 and Cover mother 20; wherein the cylinder 1 is in the shape of a tube, and the inside is filled with magnetorheological fluid and filled with high-pressure nitrogen; the left end cover 2 is fixed on the left end of the cylinder 1, and a charging valve connection hole 10 is formed in the center; the piston An axial central hole 11 is formed inside the left end of the rod 3, threads are formed on the outer surface of the left end, and two rings of piston rod radial holes 12 are formed at a distance from each othe...

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

No PUM Login to View More

Abstract

A magneto-rheological damper comprises a cylinder barrel, a left end cap, a piston rod, a piston, a right end cap, a connecting barrel, a winding barrel, a coil, an external guide magnet and a cap nut. The magneto-rheological damper has the advantages that the coil slides on the cylinder barrel in the direction identical with motion direction of the piston rod, so that a magnetic core on the piston and the external guide magnet are always guaranteed to form a closed magnetic loop, flow guiding can be functioned by an axial central hole and a radial hole in the piston, and magneto-rheological fluid viscosity can be changed by changing the size of the holes during working of the damper, and further, high-viscosity damping force can be generated. The coil is arranged outside the cylinder barrel, convenient for winding, convenient to maintain and check and good in sealing performance. By directly inflating the damper, extra purchasing an energy storage device is omitted, and the magneto-rheological damper has high applicability. Since the magneto-rheological damper is good in damping property, the magneto-rheological damper can be mounted on mechanical structures required to be damped, such as suspension damping of automobiles, damping of undercarriages of planes, damping of seats and bridges.

Description

technical field [0001] The invention belongs to the technical field of mechanical structure vibration control, in particular to a magneto-rheological shock absorber. Background technique [0002] Most traditional cars use passive suspension systems for shock absorption, which adjust the ride comfort and handling stability of the car through elastic elements and shock absorbers. However, it has proven difficult to satisfy both ride comfort and handling stability of a car. A softer suspension system, although the ride comfort of the vehicle is better, but its spring stiffness is small, which will increase the displacement of the vehicle body, which affects the handling stability of the vehicle; a harder suspension system, although the handling performance of the car It is better, but its spring stiffness is relatively large, which will reduce the comfort and affect the ride comfort of the car. In short, for this kind of passive suspension system, since the damping force of 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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53F16F9/43
Inventor 祝世兴陈帮
Owner CIVIL AVIATION UNIV OF CHINA
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
Eureka Blog
Learn More
PatSnap group products