Double-disc-type extrusion magneto-rheological brake
A magnetorheological and brake technology, applied in the direction of brake type, hydraulic resistance brake, mechanical equipment, etc., can solve the problems of inability to achieve high torque braking, reliability can not be guaranteed, adding friction plate devices, etc., to achieve maximum improvement. Braking torque, small leakage, and the effect of reducing magnetic flux leakage
Inactive Publication Date: 2013-08-14
CHINA UNIV OF MINING & TECH
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Problems solved by technology
Increasing the current of the excitation coil can effectively increase the torque within a certain range, but when the magneto-rheological fluid reaches magnetic saturation, increasing the current of the excitation coil cannot increase the torque and cannot achieve high-torque braking
Increasing the number of friction plates not only makes the device more complex, difficult to process and assemble, but also difficult to operate, and the reliability cannot be guaranteed
Method used
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Embodiment Construction
[0009] The present invention will be further described below in conjunction with accompanying drawing.
[0010] Such as figure 1 As shown, the double-disc extrusion magneto-rheological brake includes a left magnetic shell 1, a liquid outlet 2, a left end cover 4, a transmission shaft 5, a tapered roller bearing 7, a bearing housing 8, a liquid inlet 9, a drive Disc 10, excitation coil 11, magnetic isolation ring 12, brake disc 14, right magnetic shell 16, right end cover 17 and brake shaft 18, left magnetic shell 1 and right magnetic shell 16 are fastened and fixed by screws Together, the bearing seat 8 is fixed on the end of the left magnetic conduction shell 1 by screws, and the end of the bearing seat 8 is fixed by screws on the left end cover 4 with the sealing ring 3; the transmission shaft 5 is connected with a pair of tapered roller bearings 7 The bearing housing 8 is connected, the lock nut 6 compresses the tapered roller bearing 7, and the active disc 10 is fixed on ...
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The invention discloses a double-disc-type extrusion magneto-rheological brake and belongs to the field of liquid-resistance brakes. The double-disc-type extrusion magneto-rheological brake comprises a left magnetic-permeable shell, a liquid outlet, a left end cover, a transmission shaft, a conical roller bearing, a bearing seat, a liquid inlet, a driving disc, an exciting coil, a magnetic-isolating ring, a braking disc, a right magnetic-permeable shell, a right end cover and a braking shaft, wherein the right magnetic-permeable shell is provided with a pressurizing device which comprises a spring, a pressing plate, a magnetic-isolating plate, an electromagnet and a magnetic-isolating shell. The double-disc-type extrusion magneto-rheological brake has the advantages that when the braking torque is not enough, the torque can be increased by improving the current of the exciting coil and also increasing the current of the electromagnet, so that normal stress generated by a magneto-rheological liquid in the magnetic-field direction is increased, the shearing force is greatly improved, the largest braking torque of the brake is greatly improved, and the range of the braking torque of the brake is increased. Therefore, the double-disc-type extrusion magneto-rheological brake can be applied to high-power mechanical braking.
Description
technical field [0001] The invention relates to a magneto-rheological brake, in particular to a double-disc extrusion magneto-rheological brake, which belongs to the field of liquid resistance brakes. Background technique [0002] Magneto-rheological fluid is a new type of intelligent material. When there is no external magnetic field, it exhibits low-viscosity Newtonian-like fluid characteristics. Once an external magnetic field is applied, its fluid properties will change sharply, showing high viscosity and low viscosity. Fluid solid state. Moreover, this rheological property is instantaneous and reversible. Under the action of a magnetic field, the magnetic particles in the magnetorheological fluid can form microstructures such as open chains, branched chains, isolated chains, and columnar chains. When the magnetorheological fluid is subjected to an external positive pressure along the direction of the magnetic field in the magnetic field, its shear stress It can be gre...
Claims
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IPC IPC(8): F16D57/00
Inventor 刘新华刘浩刘永志李奇刘友会孟艳伟
Owner CHINA UNIV OF MINING & TECH