CN106395672B - The brake device for elevator and method with automatic protection functions based on magnetic rheology effect - Google Patents
The brake device for elevator and method with automatic protection functions based on magnetic rheology effect Download PDFInfo
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- CN106395672B CN106395672B CN201611160603.3A CN201611160603A CN106395672B CN 106395672 B CN106395672 B CN 106395672B CN 201611160603 A CN201611160603 A CN 201611160603A CN 106395672 B CN106395672 B CN 106395672B
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- permanent magnet
- end cap
- magnet
- turnbarrel
- magnetorheological fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of brake device for elevator and method with automatic protection functions based on magnetic rheology effect, which uses the structure that permanent magnet is combined with common magnet exciting coil.Under normal operating conditions, according to control field coil current come the braking moment of control brake, in case of emergency, enter the compressed air of permanent magnet-air inlet cylinder by cut-out, it can make permanent magnet under the pressure of resetting spring, it is moved toward magnetorheological fluid direction, achievees the effect that braking to realize that the magnetic fields of permanent magnet generate braking moment in turn in magnetorheological fluid.It in this magnetorheological towed elevator brake apparatus, is radiated using internal coolant runner, magnetorheological fluid can be made to be maintained within the scope of relatively low temperature, make it have good control performance and stability.Using magnetic rheology effect instead of original mechanical brake, keep the control of this brake apparatus simple and reliable.
Description
Technical field
The present invention relates to a kind of towed elevator brake apparatus and method based on magnetic rheology effect more particularly to uses permanent magnetism
Body is applied to the towed elevator brake apparatus and method of magnetorheological fluid with coil as excitation unit.
Background technology
Elevator is a kind of using motor as the vertical conveyor of power, can be used for the fortune that tier building multiplies people or carrying cargo
Defeated tool.With the fast development of skyscraper, the demand of elevator is increasing, and high performance elevator technology improves people
Working efficiency and adventure in daily life.Elevator belongs to special equipment, must ensure its security performance in use, while also needing
Meets the needs of aspects such as comfort, energy conservation and environmental protection, noise be low, but there are some for electromagnetic type towed elevator brake at present
Disadvantage such as mechanical wear, vibratory impulse, high noise etc..Magnetorheological fluid is a kind of novel intelligent material, is by with magnetic conductivity
Magnetic-particle is dissolved in the suspension formed in non-magnetic basal liquid by additive dispersion.In the case where being acted on by externally-applied magnetic field,
It is extensive in several milliseconds when with high shear yield stress, and being enhanced by magnetic field intensity and enhance, and being acted on without externally-applied magnetic field
The state of this low viscosity is restored, has conversion change procedure reversible rapidly.It is magnetorheological in recent years according to the characteristic of magnetic rheology effect
Liquid is widely used in the research of New Brake, and is provided with good application prospect, and magnetic converting technique is applied to drag
Drawing elevator brake has innovative and feasibility.
Currently, magnetic rheological brake be mostly disk brake (such as refer to Chinese patent CN201310393903.6, it is beautiful
State patent US20120211315A1), it is filled between stator and rotor using magnetorheological fluid, by stepless action in magnetorheological
The magnetic field in liquid gap makes magnetorheological fluid generate shear yield stress, to generate braking moment.In former magnetorheological towed elevator
(Chinese patent CN201310420595.1, entitled " the elevator traction clutch and brake based on magnetic rheology effect are referred in brake
System and method and device "), magnetic rheological brake device uses the brake of two coil configuration design, according to elevator brake
Device service condition needs the safety for considering in emergency circumstances elevator, and this patent adds permanent magnet device, to ensure in urgent feelings
Under condition, magnetic rheological brake also has braking moment.Meanwhile in original magnetic rheological brake, coolant liquid heat dissipation is not designed
Runner, brake are converted to thermal energy in braking process, by mechanical energy, and magnetorheological fluid temperature is caused to increase, so cooling heat dissipation
It is necessary.It is entitled " a kind of water-cooled magnetic rheological brake " according to Chinese patent CN203702929U, using in two side ends
Processing effluent trough is covered, is radiated by water cycle, but since cooling liquid flowing channel and magnetorheological fluid are apart from larger, is being carried out
In braking process, magnetorheological fluid is in higher temperature, and cooling effect is unsatisfactory, in this magnetic rheological brake, is added
Internal coolant runner carries out coolant liquid heat dissipation, has better cooling heat transferring effect.
Invention content
Invention is designed to provide a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect,
It has exciting current small, and coil heating is low, braking moment is big, low speed braking ability is good, braking moment controllability is good, structure is simple
The characteristics of list, the magnet structure of automatic protection, cooling liquid flowing channel.
To achieve the above object, technical program of the present invention lies in：It is a kind of that automatic protection is had based on magnetic rheology effect
The brake device for elevator of function, including rotor assembly and field frame assembly, rotor assembly are fixed on by bearing on field frame assembly, institute
It includes brake axle and turnbarrel to state rotor assembly；The field frame assembly includes rotation axis end cap, excitation structure, outside end cap-
Permanent magnet, magnet structure and pedestal；Excitation structure side is fixedly connected with outside end cap-permanent magnet, the other side and rotation
Hubcap is fixedly connected, and forms gap with the turnbarrel of rotor assembly；Magnet structure is connect by bearing and rotor assembly
It touches, and is fixed on field frame assembly by outside end cap-permanent magnet；The rotary shaft end outer side of lid is provided with inlet and outlet water end (W.E.)
End cap；Magnetorheological fluid is filled between the rotor assembly and field frame assembly.
Further, the rotation suit includes that turnbarrel-is gone up, in turnbarrel-, under turnbarrel-；Rotary sleeve
Cylinder-middle one end, the lower one end of turnbarrel-offer inlet opening respectively；3 sleeves are nested successively；Coolant liquid is by passing in and out saliva
The water inlet for holding end cap, flows through inside brake axle；Reach that turnbarrel-is upper and rotary sleeve by inlet opening in turnbarrel-
Cylinder-intermediate gap, carry out cooling heat transferring, later by turnbarrel-with the lower gap of turnbarrel-, by under turnbarrel-
Inlet opening flows into brake axle；Finally by the water outlet outflow of inlet and outlet water end (W.E.) end cap.
Further, excitation structure includes two groups of axially distributed excitation coil structures, excitation coil structure including encouraging
In magnetic coil, yoke-, magnetism-isolating loop, yoke-side；The magnet exciting coil is set in yoke-, on the outside of magnet exciting coil and yoke-side
Connection, magnet exciting coil bottom is connect with magnetism-isolating loop upper end；One yoke-side is fixedly connected with rotation axis end cap, another yoke-side with
Outside end cap-permanent magnet is fixedly connected；Between the middle bottom of yoke-, yoke-side bottom, the magnetism-isolating loop other end and turnbarrel are formed
Gap；The gap filling has magnetorheological fluid；Two magnet exciting coil winding modes are opposite so that the magnetic field that two magnet exciting coils generate is mutual
Superimposed, the magnetic line of force bypasses magnetism-isolating loop around magnet exciting coil so that and magnetic induction line passes through magnetorheological fluid and turnbarrel,
Magnetic induction line passes through magnetorheological fluid around magnet exciting coil, and around magnetism-isolating loop, forms the magnetic strength line loop of closure, passes through magnetic current
The magnetic induction line for becoming liquid causes magnetorheological fluid to generate magnetic rheology effect, and then makes magnetorheological fluid that magnetic rheology effect occur and then generate
Braking moment；It is passed through the electric current of magnet exciting coil by control, controls magnetic field intensity caused by magnet exciting coil, and then control braking
The braking moment of device.
Further, the magnet structure include permanent magnet-cylinder body, permanent magnet-guide ring, permanent magnet-outside end cap,
Permanent magnet-air inlet cylinder, guide runner, permanent magnet-bearing (ball) cover, permanent magnet-movement end cap, permanent magnet-movable sleeving, permanent magnetism
Body and resetting spring；
Permanent magnet-cylinder body and permanent magnet-guide ring are by being fixed on the end cap-permanent magnet of outside；Permanent magnet-cylinder body both sides
It is separately connected permanent magnet-outside end cap and permanent magnet-bearing (ball) cover；Permanent magnet-bearing (ball) cover passes through bearing and braking axis connection；
Permanent magnet-outside end cap is connect with permanent magnet-air inlet cylinder；It is fixed with permanent magnet on the permanent magnet-movable sleeving；Resetting spring
One end is connect with permanent magnet-outside end cap, and the other end is connect with permanent magnet-movable sleeving；Permanent magnet, permanent magnet-movement end cap and
Permanent magnet-movable sleeving constitutes a piston, permanent magnet-movement end cap with and permanent magnet-movable sleeving be connected；Permanent magnet-movement
Set passes through mobile sealing ring and permanent magnet-air inlet cylinders contact；By the way that compressed air is passed through permanent magnet-air inlet cylinder, will live
It fills in toward permanent magnet-outside end cap movement, the magnetic field that permanent magnet generates at this time will not act on magnetorheological fluid, when cut-out is passed through permanent magnetism
The compressed air of body-air inlet cylinder, permanent magnet piston will be resetted by spring, and the magnetic field of permanent magnet passes through permanent magnet-cylinder body
It acts on magnetorheological fluid, and then generates braking moment.
Further, outside end cap-permanent magnet is connect with permanent magnet-cylinder body；Junction is provided with a pressure bullet
Spring；Compression spring one end is connect with outside end cap-permanent magnet, and the compression spring other end is connect with pressure compensation ring one end；Pressure
The compensation ring other end is connect with turnbarrel；Outside end cap-permanent magnet is filled with pressure compensation ring, the compensation of compression spring decomposition pressure
It sets.
Further, the magnet structure by the opposite set of permanent magnets of 4 pieces of magnetizing directions at respectively 2 pairs of sides of magnetizing
To opposite Nd-Fe-B permanent magnet material.
A kind of elevator brake method with automatic protection functions based on magnetic rheology effect, it is above-mentioned based on magnetic to provide one
The brake device for elevator with automatic protection functions of rheological effect, the brake axle of the magnetic current changing brake device pass through shaft coupling
It is connected with worm screw, the worm screw is connected to the motor by shaft coupling to be connect, and the elevator brake system is controlled by controller,
The controller inputs multiple signals, including motor overheating signal, code device signal, magnetorheological fluid temperature signal, speed signal,
Limit switch signal, power-off signal and other signals；The controller exports four road signals, and the motor control signal of the first via is logical
It crosses motor driver and rotating speed control is carried out to motor；The air pressure that the compressor control signal on the second tunnel passes through control air compressor
Position control is carried out to permanent magnet；Third road magnet exciting coil controls electric current of the signal by control input DC power, by direct current
Power input magnet exciting coil controls magnetorheological towed elevator brake apparatus braking moment；The coolant liquid cycle control on the 4th tunnel
For signal processed by the water pump cooling liquid speed of control cooling device, coolant liquid is flowed into intake-outlet end end cap by control water pump, logical
Supercooling liquid stream road carries out cooling heat transferring to control the temperature of magnetorheological fluid to magnetorheological towed elevator brake apparatus.
Further, electric current is produced by magnet exciting coil is looped around magnet exciting coil magnetic field, due to the electric current of magnet exciting coil
Direction is on the contrary, make magnetic direction caused by magnet exciting coil on the contrary, magnetic field is overlapped mutually；Magnetic field passes through magnetorheological fluid, makes magnetic current
Becoming liquid and magnetic rheology effect occurs, the apparent viscosity of magnetorheological fluid is changed, when magnetic field intensity reaches a certain critical value, magnetic
Rheology liquid stops flowing and reaches solidification, has certain anti-shear ability, turnbarrel-is acted on by shear stress
On, achieve the effect that braking；
Compressed air is generated by air compressor and is entered in magnet structure by permanent magnet-air inlet cylinder, by permanent magnetism
Body is mobile to turnbarrel outside；The magnetic field that permanent magnet generates at this time shadow is not caused to magnetorheological fluid by permanent magnet-cylinder body
It rings, when in case of emergency, the input of air compressor, pressure of the magnet structure in resetting spring is closed by the controller
To moving inside turnbarrel under power, the magnetic field that permanent magnet generates at this time passes through magnetorheological fluid and rotation by permanent magnet-cylinder body
Under sleeve-, the shear stress caused by magnetic field of permanent magnet acts under turnbarrel-, achievees the effect that braking.
Further, the DC power supply is generated by elevator power supply by rectifier.
Compared with the prior art, the advantages of the present invention are as follows：
1, in this magnetorheological towed elevator brake apparatus, the knot that permanent magnet is combined with common magnet exciting coil is used
Structure.Under normal operating conditions, according to control field coil current come the braking moment of control brake, in case of emergency,
By cut-out into the compressed air of permanent magnet-air inlet cylinder, it can make permanent magnet under the pressure of resetting spring, it is past magnetorheological
Liquid direction is moved, and achievees the effect that braking to realize that the magnetic fields of permanent magnet generate braking moment in turn in magnetorheological fluid.
2, it in this magnetorheological towed elevator brake apparatus, is radiated using internal coolant runner.Coolant liquid by into
Water inlet on the end cap of outlet end flows into brake, and coolant liquid is transported to rotation by the runner of unique design inside brake axle
On sleeve, and the heat that magnetorheological fluid in braking process generates is taken away by way of cooling heat transferring, last coolant liquid passes through
Outlet flow flows out.By the above radiating mode, magnetorheological fluid can be made to be maintained within the scope of relatively low temperature, made it have good
Good control performance and stability.
3, using magnetic rheology effect instead of original mechanical brake, magnetorheological fluid can be in several milliseconds by Newtonian liquid
Body becomes the class solid with high shear yield stress so that and magnetorheological fluid towed elevator brake apparatus has the response time short,
By control magnet exciting coil electric current so that control magnetorheological fluid shear yield stress come achieve the purpose that control braking moment,
Keep the control of this brake apparatus simple and reliable.Magnetorheological fluid belongs to fluid brake in braking process, without tradition traction braking
Strong noise, mechanical wear and impact are big, steady and continuously adjustable with braking moment, easily controllable, and braking impact is small, makes an uproar
The features such as sound is small, and energy expenditure is low.The magnet exciting coil of magnetorheological towed elevator brake apparatus uses two coil configuration, has magnetic strength
Answer intensity big, it is more uniform in magnetorheological fluid gap distribution.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the left view of the embodiment of the present invention.
Fig. 3 is that cooling passage flows to schematic diagram.
Fig. 4 is permanent magnet magnetizing direction schematic diagram.
Fig. 5 is excitation unit magnetic line of force distribution schematic diagram.
Fig. 6 is that permanent magnet device compressed air flows schematic diagram.
Fig. 7 is the schematic diagram of the magnetorheological braking system of towed elevator based on the present invention.
Wherein：1.O type sealing rings；2. permanent magnet-cylinder body；3. permanent magnet-guide ring；4. guide runner；5. permanent magnet-is outer
Side end cap；6 permanent magnets；7. permanent magnet-movement end cap；8. permanent magnet-movable sleeving；9. hexagon socket head cap screw；10. permanent magnet-air inlet
Cylinder；11. resetting spring；12. hexagon socket head cap screw；13. moving sealing ring；14. hexagon socket head cap screw；15. permanent magnet-bearing end
Lid；16. magnetorheological fluid；17. pedestal；18.O type sealing rings；19. holding screw；20. holding screw；21. general flat key；22. system
Moving axis；23. rotatory sealing；24. intake-outlet end end cap；25. bearing 6011；26. lip-type packing；27. bearing 16010；28.
Under turnbarrel-；29. in turnbarrel-；30. on turnbarrel-；31. rotation axis end cap；32. hexagon socket head cap screw；33. excitation
Coil；34. in yoke-；35. magnetism-isolating loop；36. yoke-side；37. outside end cap-permanent magnet；38. outer-hexagonal plug screw；39.O types
Sealing ring；40. pressure compensation ring；41. compression spring；42. hexagon socket head cap screw；43. water inlet；44. water outlet；45. motor；
46. car；47. leveling speed detects relay model；48. motor overheating signal；49. code device signal；50. power-off protection is believed
Number；51. limit relay signal；52. motor driver；53. controller；54. other signals；55. brake apparatus magnetorheological fluid
Temperature signal；56. DC power supply；57. rectifier；58. elevator power supply；59. magnetorheological towed elevator brake apparatus；60. air
Compressor；61. cooling device；62. temperature sensor；63. counterweight；64. worm screw；65. worm gear；66. shaft coupling.
Specific implementation mode
Explanation is further explained to the present invention with reference to the drawings and specific embodiments.
The present invention provides a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect, including rotor
Assembly and field frame assembly, rotor assembly are fixed on by bearing on field frame assembly, and the rotor assembly includes brake axle and rotation
Sleeve；The field frame assembly includes rotation axis end cap, excitation structure, outside end cap-permanent magnet, magnet structure and pedestal；
Excitation structure side is fixedly connected with outside end cap-permanent magnet, and the other side is fixedly connected with rotation axis end cap, and and rotor assembly
Turnbarrel formed gap；Magnet structure is contacted by bearing with rotor assembly, and solid by outside end cap-permanent magnet
Due on field frame assembly；The rotary shaft end outer side of lid is provided with inlet and outlet water end (W.E.) end cap；The rotor assembly and field frame assembly
Between fill magnetorheological fluid.
As shown in Figure 1, the present invention have automatic protection functions magnetorheological brake device for elevator, include brake axle 22,
Turnbarrel-is lower 28,29, turnbarrel-is upper 30 in turnbarrel-, rotation axis end cap 31, intake-outlet end end cap 24, yoke-
34, magnetism-isolating loop 35, outside end cap-permanent magnet 37, pressure compensation ring 40, compression spring 41, permanent magnet-outside in side 36, yoke-
End cap 5, permanent magnet-cylinder body 2, permanent magnet-guide ring 3, guide runner 4, permanent magnet-air inlet cylinder 10, permanent magnet-bearing (ball) cover
15, resetting spring 11, permanent magnet 6, permanent magnet-movement end cap 7, permanent magnet-movable sleeving 8, pedestal 17.Wherein, under turnbarrel-
28,29, turnbarrel-upper 30 forms rotor assembly with brake axle 22 in turnbarrel-.It is fixed that rotor assembly is fixed on by bearing
On sub- assembly, field frame assembly by intake-outlet end end cap 24, rotation axis end cap 31, excitation unit, outside end cap-permanent magnet 37,
Pressure compensation ring 40, spring 41, magnet structure, pedestal 17 form.Wherein, magnet exciting coil is by magnet exciting coil 33, yoke-
34, magnetism-isolating loop 35, yoke-side 36 form, and are fixed by outside end cap-permanent magnet 37 and rotation axis end cap 31, and total with rotor
At turnbarrel formed gap, be filled magnetorheological fluid 16.Magnet structure is by permanent magnet-cylinder body 2, permanent magnet-guiding
Ring 3, permanent magnet-outside end cap 5, guide runner 4, permanent magnet-bearing (ball) cover 15, permanent magnet-movement end cap 7, permanent magnet-movement
Set 8, permanent magnet 6, spring 11 form, and magnet structure is contacted by bearing 27 with rotor assembly, and forever by outside end cap-
Magnet 37 is fixed on field frame assembly.
As shown in Figure 1, brake apparatus is equipped with 4 outer-hexagonal plug screws 38, have the function of liquid injection hole and gas vent.Braking
After device installs, outer-hexagonal plug screw 38 can be taken out, magnetorheological fluid 16 is uniformly filled in field frame assembly and rotor assembly
Gap in.
It is placed in 34 in yoke-by two magnet exciting coils 33, outside connects there are two yoke-side 36 and two magnetism-isolating loops 35
Excitation unit is formed, and is fixed respectively with rotation axis end cap 31 and outside end cap-permanent magnet 37 by hexagon socket head cap screw, is led to
Cross two opposite magnet exciting coils of winding mode 33 so that the magnetic field that two magnet exciting coils 33 generate is mutually superimposed, magnetic force wire loop
Around magnet exciting coil 33, while bypassing magnetism-isolating loop 35 so that magnetic induction line passes through magnetorheological fluid 16 and turnbarrel-upper 30, such as Fig. 5
Shown, magnetic induction line passes through magnetorheological fluid 16 around magnet exciting coil 33, and around magnetism-isolating loop 35, and the magnetic induction line for forming closure returns
Road passes through the magnetic induction line of magnetorheological fluid 16, and magnetorheological fluid 16 is caused to generate magnetic rheology effect, and then makes magnetorheological fluid 16 that magnetic occur
Rheological effect generates braking moment in turn.
Magnet structure, outside are fixed on by permanent magnet-cylinder body 2 and permanent magnet-guide ring 3 by hexagon socket head cap screw 14
On outside end cap-permanent magnet 37,2 both sides of permanent magnet-cylinder body are separately connected permanent magnet -5 He of outside end cap by hexagon socket head cap screw
Permanent magnet-bearing (ball) cover 15, permanent magnet-bearing (ball) cover 15 are connect by bearing 27 with brake axle 22, permanent magnet-outside end cap 5
It is connect with permanent magnet-air inlet cylinder 10 by hexagon socket head cap screw 12, inside is by permanent magnet 6, permanent magnet-movement end cap 7 and permanent magnetism
Body-movable sleeving 8 constitute a piston, permanent magnet-movement end cap 7 by hexagon socket head cap screw 9 with and permanent magnet-movable sleeving 8 be connected
It connects, and is contacted with permanent magnet-air inlet cylinder 10 by mobile sealing ring 13, justified by the way that compressed air is passed through permanent magnet-air inlet
Cylinder 10, permanent magnet piston is moved toward permanent magnet-outside end cap 5, and the magnetic field that permanent magnet generates at this time will not act on magnetorheological
Liquid 16, when cut-out is passed through the compressed air of permanent magnet-air inlet cylinder 10, permanent magnet piston will be resetted by spring 11, permanent magnetism
The magnetic field of body is acted on by permanent magnet-cylinder body 2 on magnetorheological fluid 16, and then generates braking moment, to reach automatic protection
Function.As shown in figure 4, permanent magnet is divided into 4 pieces, the opposite Nd-Fe-B permanent magnet material of respectively 2 pairs of magnetizing directions, the program can
To ensure that magnetorheological fluid gap has higher magnetic induction intensity and more uniform magnetic field distribution.
As shown in Figure 1, in outer side end cap-permanent magnet 37, pass through 6 springs 41 and pressure compensation ring 40 and permanent magnet-
Cylinder body 2 forms a closed containing cavity, when magnetorheological fluid 16 during the work time, since centrifugal force and thermal expansion generate pressure
When power, pressure compensation can be carried out, the stationarity of braking process is improved, ensures the reliability of device.
As shown in figure 3, according to magnetorheological fluid 16 in braking process, brake apparatus converts mechanical energy to thermal energy, causes
Magnetorheological fluid temperature increases, and the operating temperature range of magnetorheological fluid materials is -40 DEG C to 150 DEG C.Coolant liquid is led to by water inlet 43
Enter, by importing and exporting water end (W.E.) end cap 24, flows through 22 inner inlet end cooling liquid flowing channel of brake axle and reach turnbarrel-upper 30 and rotation
29 gap in rotaring sleeve-carries out cooling heat transferring, later by turnbarrel -29 and lower 28 gaps of turnbarrel -, flows into system
22 inside water outlet cooling liquid flowing channel of moving axis is flowed out by water outlet 44, is equipped on brake axle by inlet and outlet water end (W.E.) end cap 24
Holding screw 19, holding screw 20 and marine glue are to have the function that sealing.Equipped with cooling liquid flowing channel, it is ensured that braking
In the process, magnetorheological fluid 16 may remain in lower working range, ensure that magnetorheological fluid 16 has good magnetorheological effect
It answers and brake apparatus has higher stability.
The elevator brake method with automatic protection functions based on magnetic rheology effect that the present invention also provides a kind of, control are former
Reason is as shown in Figure 7.It includes the above-mentioned brake device for elevator with automatic protection functions based on magnetic rheology effect, the magnetic
The brake axle 22 of rheology brake apparatus 59 is connected by shaft coupling 66 with worm screw 64, and the worm screw 64 passes through shaft coupling 66 and electricity
The output shaft of machine 45 is connected, and the worm screw 64 is connected with worm gear 65 to form and draged with the traction sheave composition elevator on worm gear 65
Drawing mechanism, the worm gear 66 drives car 46 and counterweight 63 to move up and down, and the controller 53 acquires elevator information, including
By the motor overheating signal 48 of motor 45 information input, code device signal 49, leveling speed detects relay model 47, power-off
Protection signal 50, limit relay signal 51 are acquired by the temperature sensor 62 on magnetorheological towed elevator brake apparatus 59
Brake apparatus magnetorheological fluid temperature signal 55 and other signals 54, and controlled by controller 53, the controller 53
Four road signals are exported, i.e. the motor control signal of the first via carries out rotating speed control by motor driver 52 to motor 45；Second
The compressor control signal on road carries out position control by controlling the air pressure of air compressor 60 to permanent magnet 6；Third road excitation
Coil control signal by control input DC power 56 electric current, by DC supply input magnet exciting coil 33 to magnetorheological traction
59 braking moment of brake device for elevator is controlled, and the DC power supply 56 is generated by elevator power supply 58 by rectifier 57；The
For the coolant liquid loop control signal on four tunnels by the water pump cooling liquid speed of control cooling device 61, control water pump will cooling liquid stream
Enter intake-outlet end end cap 24, cooling heat transferring is carried out to magnetorheological towed elevator brake apparatus 59 by the cooling liquid flowing channel of Fig. 3
To control the temperature of magnetorheological fluid 16.
Operation principle：
Electric current produces the magnetic field for being looped around magnet exciting coil 33 by magnet exciting coil 33, due to the electric current side of magnet exciting coil 33
To on the contrary, making magnetic direction caused by magnet exciting coil 33 on the contrary, magnetic field is overlapped mutually, as shown in figure 5, magnetic field is across magnetorheological
Liquid 16 makes magnetorheological fluid 16 that magnetic rheology effect occur, and huge variation has occurred in the apparent viscosity of magnetorheological fluid 16, strong in magnetic field
When degree reaches a certain critical value, magnetorheological fluid 16 stops flowing and reaches solidification, has certain anti-shear ability, passes through mangneto
Shear stress achievees the effect that braking in turnbarrel-upper 30.
Compressed air is generated by air compressor 60 and is entered in magnet structure by permanent magnet-air inlet cylinder 10, will
Permanent magnet 6 is to mobile on the outside of turnbarrel, as shown in fig. 6, the magnetic field that permanent magnet 6 generates at this time is by permanent magnet-cylinder body 2, no
Magnetorheological fluid 16 is impacted, when in case of emergency, as controller 53 collects power-off protection signal 50, motor overheating
When signal 48 etc. needs to take emergency braking, the input of air compressor 60 is closed by the controller 53, magnet structure exists
To moving inside turnbarrel under the pressure of resetting spring 11, the magnetic field that permanent magnet 6 generates at this time is worn by permanent magnet-cylinder body 2
Magnetorheological fluid 16 and turnbarrel-lower 28 are crossed, shear stress acts under turnbarrel-caused by 6 magnetic field of permanent magnet
28, achieve the effect that braking.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect, including rotor assembly and stator it is total
At rotor assembly is fixed on by bearing on field frame assembly, it is characterised in that：The rotor assembly includes brake axle and rotary sleeve
Cylinder；The field frame assembly includes rotation axis end cap, excitation structure, outside end cap-permanent magnet, magnet structure and pedestal；
Excitation structure side is fixedly connected with outside end cap-permanent magnet, and the other side is fixedly connected with rotation axis end cap；Excitation structure
It is mounted on the base；
Magnet structure is contacted by bearing with rotor assembly, and is fixed on field frame assembly by outside end cap-permanent magnet；
The rotary shaft end outer side of lid is provided with inlet and outlet water end (W.E.) end cap；
Gap filling magnetorheological fluid between the rotor assembly and field frame assembly；
The magnet structure includes permanent magnet-cylinder body, permanent magnet-guide ring, permanent magnet-outside end cap, permanent magnet-air inlet circle
Cylinder, guide runner, permanent magnet-bearing (ball) cover, permanent magnet-movement end cap, permanent magnet-movable sleeving, permanent magnet and resetting spring；
Permanent magnet-cylinder body and permanent magnet-guide ring are by being fixed on the end cap-permanent magnet of outside；Permanent magnet-cylinder body both sides difference
Connect permanent magnet-outside end cap and permanent magnet-bearing (ball) cover；Permanent magnet-bearing (ball) cover passes through bearing and braking axis connection；Permanent magnetism
Body-outside end cap is connect with permanent magnet-air inlet cylinder；
It is fixed with permanent magnet on the permanent magnet-movable sleeving；Resetting spring one end is connect with permanent magnet-outside end cap, the other end
It is connect with permanent magnet-movable sleeving；
Permanent magnet, permanent magnet-movement end cap and permanent magnet-movable sleeving constitute a piston, permanent magnet-movement end cap and and permanent magnetism
Body-movable sleeving is connected；Permanent magnet-movable sleeving passes through mobile sealing ring and permanent magnet-air inlet cylinders contact；By the way that sky will be compressed
Gas is passed through permanent magnet-air inlet cylinder, piston is moved toward permanent magnet-outside end cap, the magnetic field that permanent magnet generates at this time will not be made
For magnetorheological fluid, when cut-out is passed through the compressed air of permanent magnet-air inlet cylinder, permanent magnet piston will be resetted by spring,
The magnetic field of permanent magnet is acted on by permanent magnet-cylinder body on magnetorheological fluid, and then generates braking moment.
2. a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect according to claim 1,
It is characterized in that：The rotation suit includes that turnbarrel-is gone up, in turnbarrel-, under turnbarrel-；One in turnbarrel-
End, the lower one end of turnbarrel-offer inlet opening respectively；3 sleeves are nested successively；Coolant liquid is by importing and exporting water end (W.E.) end cap
Water inlet flows through inside brake axle；Reach that turnbarrel-is upper and turnbarrel-centre by inlet opening in turnbarrel-
Gap carries out cooling heat transferring, later by with the lower gap of turnbarrel-, passing through the inlet opening under turnbarrel-in turnbarrel-
Flow into brake axle；Finally by the water outlet outflow of inlet and outlet water end (W.E.) end cap.
3. a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect according to claim 1,
It is characterized in that：Excitation structure include two groups of axially distributed excitation coil structures, excitation coil structure include magnet exciting coil,
In yoke-, magnetism-isolating loop, yoke-side；
The magnet exciting coil is set in yoke-, is connect with yoke-side on the outside of magnet exciting coil, magnet exciting coil bottom and magnetism-isolating loop
Upper end connects；By being fixedly connected with rotation axis end cap, another yoke-side is fixed with outside end cap-permanent magnet to be connected for one yoke-side
It connects；The middle bottom of yoke-, yoke-side bottom, the magnetism-isolating loop other end and turnbarrel form gap；The gap filling has magnetorheological
Liquid；
Two magnet exciting coil winding modes are opposite so that two magnet exciting coils generate magnetic field it is mutually superimposed, the magnetic line of force around
Magnet exciting coil, while bypassing magnetism-isolating loop so that magnetic induction line passes through magnetorheological fluid and turnbarrel, and magnetic induction line is in magnet exciting coil week
It encloses, and magnetorheological fluid is passed through around magnetism-isolating loop, form the magnetic strength line loop of closure, pass through the magnetic induction line of magnetorheological fluid, cause
Magnetorheological fluid generates magnetic rheology effect, and then makes magnetorheological fluid that magnetic rheology effect occur and then generate braking moment；Pass through control
It is passed through the electric current of magnet exciting coil, controls magnetic field intensity caused by magnet exciting coil, and then the braking moment of control brake.
4. a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect according to claim 1,
It is characterized in that：Outside end cap-the permanent magnet is connect with permanent magnet-cylinder body；Junction is provided with a compression spring；Pressure
Spring one end is connect with outside end cap-permanent magnet, and the compression spring other end is connect with pressure compensation ring one end；Pressure compensation ring is another
One end is connect with turnbarrel；Outside end cap-permanent magnet and pressure compensation ring, compression spring decomposition pressure compensation device.
5. a kind of brake device for elevator with automatic protection functions based on magnetic rheology effect according to claim 1,
It is characterized in that：The magnet structure is by the opposite set of permanent magnets of 4 pieces of magnetizing directions at respectively 2 pairs of magnetizing directions are opposite
Nd-Fe-B permanent magnet material.
6. a kind of elevator brake method with automatic protection functions based on magnetic rheology effect, it is characterised in that：It provides as weighed
Profit requires the brake device for elevator with automatic protection functions based on magnetic rheology effect described in 1, the magnetorheological braking dress
The brake axle set is connected by a shaft coupling with worm screw, and the worm screw is connected to the motor by another shaft coupling and is connect；The electricity
Terraced braking system is controlled by controller, and the controller inputs multiple signals, including motor overheating signal, encoder letter
Number, magnetorheological fluid temperature signal, speed signal, limit switch signal, power-off signal and other signals；The controller output four
The motor control signal of road signal, the first via carries out rotating speed control by motor driver to motor；The compressor control on the second tunnel
Signal processed carries out position control by controlling the air pressure of air compressor to permanent magnet；Third road magnet exciting coil control signal passes through
The electric current for controlling input DC power, by DC supply input magnet exciting coil to magnetorheological towed elevator brake apparatus braking moment
It is controlled；The coolant liquid loop control signal on the 4th tunnel controls water pump by the water pump cooling liquid speed of control cooling device
Coolant liquid is flowed into intake-outlet end end cap, cooling heat transferring is carried out to magnetorheological towed elevator brake apparatus by cooling liquid flowing channel
To control the temperature of magnetorheological fluid.
7. the elevator brake method with automatic protection functions according to claim 6 based on magnetic rheology effect, special
Sign is：Electric current is produced by magnet exciting coil is looped around magnet exciting coil magnetic field, since the current direction of magnet exciting coil is on the contrary, make
Magnetic direction caused by magnet exciting coil is on the contrary, magnetic field is overlapped mutually；Magnetic field passes through magnetorheological fluid, makes magnetorheological fluid that magnetic current occur
The apparent viscosity of change effect, magnetorheological fluid is changed, and when magnetic field intensity reaches a certain critical value, magnetorheological fluid stops stream
It moves and reaches solidification, there is certain anti-shear ability, acted on turnbarrel-by shear stress, reach braking
Effect；
Compressed air by air compressor generate and entered in magnet structure by permanent magnet-air inlet cylinder, by permanent magnet to
It is mobile on the outside of turnbarrel；The magnetic field that permanent magnet generates at this time does not impact magnetorheological fluid by permanent magnet-cylinder body, when
In case of emergency, the input of air compressor is closed by the controller, magnet structure is under the pressure of resetting spring
It is moved inside to turnbarrel, the magnetic field that permanent magnet generates at this time passes through magnetorheological fluid and turnbarrel-by permanent magnet-cylinder body
Under, the shear stress caused by magnetic field of permanent magnet acts under turnbarrel-, achievees the effect that braking.
8. the elevator brake method with automatic protection functions according to claim 6 based on magnetic rheology effect, special
Sign is：The DC power supply is generated by elevator power supply by rectifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611160603.3A CN106395672B (en) | 2016-12-15 | 2016-12-15 | The brake device for elevator and method with automatic protection functions based on magnetic rheology effect |
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|---|---|---|---|
| CN201611160603.3A CN106395672B (en) | 2016-12-15 | 2016-12-15 | The brake device for elevator and method with automatic protection functions based on magnetic rheology effect |
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| CN106395672B true CN106395672B (en) | 2018-10-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109095379A (en) * | 2018-11-05 | 2018-12-28 | 苏州市职业大学 | Elevator disc permanent-magnet brake |
| CN109179139A (en) * | 2018-11-05 | 2019-01-11 | 苏州市职业大学 | Elevator disk permanent magnet brake |
| CN109205497A (en) * | 2018-11-05 | 2019-01-15 | 苏州市职业大学 | Elevator drum-type permanent magnet brake |
| CN109854637B (en) * | 2019-02-26 | 2021-04-06 | 恒有（苏州）精工机电有限公司 | Permanent magnet excited torque controllable magneto-rheological overload protection safety coupling |
| CN109941902B (en) * | 2019-02-27 | 2024-02-13 | 浙江润华机电有限公司 | Hydraulic winch |
| CN110360248B (en) * | 2019-07-30 | 2020-12-25 | 福州大学 | Magnetorheological brake capable of recycling structure motion energy |
| CN112282089B (en) * | 2020-10-20 | 2022-03-25 | 广西鸿昊新材料有限公司 | Rheological state acoustic celotex board based on classic absorption |
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| WO1994001181A1 (en) * | 1992-07-09 | 1994-01-20 | Torgi Ag | Device for carrying out movements |
| CN102249136B (en) * | 2010-05-18 | 2015-04-08 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN103453053B (en) * | 2013-09-02 | 2016-04-20 | 中国矿业大学 | A kind of magnetic rheological brake |
| CN103434911B (en) * | 2013-09-16 | 2015-09-09 | 福州大学 | Based on elevator traction engagement & disengagement braking system and the method and apparatus of magnetic rheology effect |
| CN203702929U (en) * | 2014-01-07 | 2014-07-09 | 杭州电子科技大学 | Water-cooled type magneto-rheological brake |
| JP6483413B2 (en) * | 2014-11-21 | 2019-03-13 | 不二ラテックス株式会社 | Braking device |
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