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Gear-free tractor with magnetorheological fluid brake

A toothless traction machine and magneto-rheological fluid technology, which is applied to elevators, hoisting devices, transportation and packaging in buildings, can solve large opening and closing noise, toothless traction machine advantage discount, braking The sheet is susceptible to wear and other problems, achieving the effect of solving the leakage of magneto-rheological fluid

Active Publication Date: 2011-11-23
LIAONING YOULIAN ELECTROMECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] WO2009 / 032014 discloses an "elevator magneto-rheological fluid brake". The technical problem to be solved is: the elevator brake produces friction between the brake friction plate and the moving plate. After a long time of use, the brake plate is susceptible to wear and tear
However, the toothless traction machine must be used in conjunction with the brake, and the current brakes are all contact friction brakes, because this kind of brake has a large opening and closing noise in addition to the above defects, which makes the toothless traction The advantages of the machine are greatly reduced

Method used

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  • Gear-free tractor with magnetorheological fluid brake
  • Gear-free tractor with magnetorheological fluid brake
  • Gear-free tractor with magnetorheological fluid brake

Examples

Experimental program
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Embodiment Construction

[0016] see figure 1 , said outer stator assembly is: stator yokes 21 and 22, brake coil 40 and non-magnetic gap 41, fixed together with stator bracket 27. Said inner rotor assembly is: rotor yoke 23 , brake permanent magnet 37 and shaft sleeve 29 , which are fixed together with traction machine driving shaft 30 . The gap 38 between the rotor yoke and the stator yoke is filled with magnetorheological fluid.

[0017] Said annular sealing assembly is composed of an annular sealing permanent magnet or coil 25 sandwiched between two annular sealing magnetic poles 24 and 26 in the radial direction, and the two annular sealing assemblies are respectively arranged on the magneto-rheological fluid injected The two ends of the gap 38 are fixed on the stator frame 27, wherein the surface of the first sealed magnetic pole 24 has a tooth tip 241, and there is a gap between the tooth tip 241 and the rotor yoke 23.

[0018] When there is no current in the coil 40, the main magnetic flux of...

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Abstract

The invention provides a gear-free tractor with a magnetorheological fluid brake, which is used for solving the problem that a brake used by the gear-free tractor is a friction brake. Key points of the invention are that: two ends of a gap are provided with one magnetic field respectively; a device for forming a magnetic field is an annular sealing assembly; the annular sealing assembly is fixed on an outer stator assembly; a gap is formed between the outer stator assembly and an inner rotor; the magnetorheological fluid brake is fixed on a tractor shell by using bolts; and a driving shaft of the tractor is inserted into and fixed in a shaft sleeve of the inner rotor of the magnetorheological fluid brake. The invention has the advantage that: the brake is prevented from being worn and has no opening or closing noise, so that the advantages of the gear-free tractor are brought into play.

Description

technical field [0001] The invention relates to a toothless traction machine used on an elevator, in particular to a toothless traction machine using a magneto-rheological fluid brake. Background technique [0002] WO2009 / 032014 discloses an "elevator magneto-rheological fluid brake". The technical problem to be solved is: the elevator brake produces friction between the brake friction plate and the moving plate. After a long time of use, the brake plate is susceptible to wear and tear. Its technical scheme is: inject brake fluid-magneto-yheologic fluid (magneto-yheologival fluid) in the gap between the stator and the rotor. Magnetorheological fluid is a kind of magnetic particles in suspension, for example, it may consist of 85wt% magnetic particles and 15wt% liquid. When the synthetic magnetic flux of the permanent magnet and the energized coil is 0, the magnetorheological fluid is in a liquid state, and the rotor operates without friction; when the synthetic magnetic fl...

Claims

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Application Information

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IPC IPC(8): B66B11/04B66D5/02B66D5/30
Inventor 张安戈张伟
Owner LIAONING YOULIAN ELECTROMECHANICAL EQUIP
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