A self-regulating magnetorheological fluid single pillar

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...

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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.

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