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Self-adjustment magnetorheological fluid single prop

A technology of magnetorheological fluid and single pillar, which is applied in the direction of pillars/brackets, mining equipment, earthwork drilling and mining, etc. It can solve the problems that the dynamic load cannot be adjusted well, the sealing requirements are high, and the strength is affected. Reliable structural strength, low machining accuracy, and reduced support difficulty

Inactive Publication Date: 2015-07-15
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are the following problems in the actual use of the single hydraulic prop: 1. The hydraulic oil needs to be provided by the pump station to provide a lot of pressure, and the cost is high; 2. The valve seat of the three-purpose valve is welded on the outer shell, which affects the strength; 3. The requirements for sealing are very high. Once leakage occurs in the working state, it will lead to accidents; 4. The working conditions are complicated, and the dynamic load cannot be well adjusted.

Method used

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  • Self-adjustment magnetorheological fluid single prop

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] Such as figure 1 As shown, a self-regulating magnetorheological fluid single pillar,

[0028] It includes hydraulic positioning system and magnetorheological fluid support system;

[0029] The hydraulic positioning system includes a base 1, a positioning block 2, a hydraulic cylinder block 3, a piston rod 12, a guide ring 17, a return spring 18, a sealing ring III 19 and a bottom hydraulic oil inlet 20; the base 1 and the bottom of the hydraulic cylinder 3 Interference fit installation, the piston rod 12 is installed and moved through the guide ring 17, and the lowest position is positioned through the positioning block 2, and a seal is formed through the sealing ring III19 at the same time, and the upper and lower ends of the return spring 18 are respectively connected to the hydraulic cylinder body 3 and The piston rods 12 are connected to each other, and the pre...

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Abstract

The invention discloses a self-adjustment magnetorheological fluid single prop. The self-adjustment magnetorheological fluid single prop comprises a hydraulic positioning system and a magnetorheological fluid support system, wherein the hydraulic positioning system comprises a base (1), a positioning block (2), a hydraulic cylinder body (3), a piston column (12), a guide ring (17), a return spring (18), a sealing ring III (19) and a bottom hydraulic oil inlet (20); and the magnetorheological fluid support system comprises a magnetorheological cylinder body (4), a coil (5), an end cover (6), a pressure sensor (7), a support block (8), a cylinder pin (9), a sealing ring I (10), a separation magnetic ring (11), a piston column (12), an upper magnetorheological fluid injecting port (13), a magnetorheological fluid (14), a sealing ring II (15) and a connecting steel wire (16). The self-adjustment magnetorheological fluid single prop needs no pump station to provide great support, has no need to mount a valve base of a three-purpose valve, is lower in processing requirements on sealing pieces and inner surfaces of mobile columns, and can preferably and automatically adjust the support strength when support loads are suddenly changed.

Description

technical field [0001] The invention relates to a single support, in particular to a self-regulating magnetorheological fluid single support. Background technique [0002] Magnetorheological fluid is a new type of intelligent material whose rheological properties change drastically under an external magnetic field. When there is no external magnetic field, it behaves as a Newtonian fluid with good fluidity. However, under the action of an external magnetic field, the rheological properties of the fluid Huge changes occur, and its apparent viscosity can increase by several orders of magnitude within a few milliseconds, and it presents mechanical properties similar to solids, and the viscosity change is continuously reversible, that is, once the magnetic field is removed, it becomes a Newtonian fluid with good fluidity. [0003] The continuous, reversible, rapid and easy-to-control characteristics of magnetorheological effect make magnetorheological fluids have very wide appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D15/46E21D15/51
Inventor 刘新华王冬冬王忠宾谭超王利锋任衍坤张秋香
Owner CHINA UNIV OF MINING & TECH
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