CN201081846Y

CN201081846Y - Bi-stable state magnetic clutch

Info

Publication number: CN201081846Y
Application number: CNU2007201559494U
Authority: CN
Inventors: 刘新广
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-04
Filing date: 2007-07-04
Publication date: 2008-07-02
Anticipated expiration: 2017-07-04

Abstract

The utility model relates to a bistable magnetic clutch. A permanent magnet and an operating coil are arranged between a drive wheel and a driven wheel; a permanent magnetic motor type arrester is arranged on a driven shaft; permanent magnetic force is kept in both an off state and a close state; the mutual switch between the off state and the close state is achieved by that the electromagnetic force of an operating coil overcomes the permanent magnetic force to change the direction of permanent magnetic force lines. When the clutch is operated from the close state to the off state, the arrester is braked, and a stator coil of the permanent magnetic motor is jointed to form a close loop; a permanent magnetic rotor of the permanent magnetic motor rotates along with the driven shaft to ensure that the stator coil produces induction field which prevents the rotation of the permanent magnetic rotor, so as to achieve the brake and generate power outwards at the same time. The utility model has rapid operation, environmental protection, energy conservation, little maintenance and long life-span, which is suitable for various working situations of combination and separation between a driven mechanism and a power source.

Description

Bi-stable magnetic clutch

Technical field

The utility model relates to Clutch Technology, particularly a kind of bi-stable magnetic clutch.

Background technology

Clutch is a kind of device that cuts off and connect drive source and driven-mechanism.Traditional clutch has mechanical type and electromagnetic type.The machinery throw-out clutch, the outer mechanical force (need utilize hydraulic coupling to large-scale clutch) that adds realizes separating, and realize engaging by spring pressure pressing friction sheet, and the clutch process is longer, and incompatibility is used for automatic control engineering.This clutch is in the clutch process, and the mutual friction energy-dissipating of friction plate is given birth to heat, and friction plate is fragile.Existing electromagnetic clutch engages with electromagnetic force, separates with the cut spring pulling force, and actuating speed is fast, can adapt to and be used for automatic control engineering, and not have frictional dissipation.But existing electromagnetic clutch is at engagement state, and its coil must keep energising, so power consumption, what have also continues to power up by brush and collecting ring, and hot magnetisation is given birth in power consumption, contaminated environment, and its solenoid is heated fragile.

Summary of the invention

The utility model designs a kind of bi-stable magnetic clutch with braking function, overcomes the defective of existing machinery clutch and electromagnetic clutch, has also increased braking function, and this clutch energy consumption is very little, and electromagnetic pollution is minimum, thereby purposes is wide.

The utility model is realized by following technical scheme.

The utility model clutch, permanent magnet and operating coil are set between driving wheel and driven pulley, the brake of magneto formula is set on driven shaft, all trying hard to keep and holding from state, the state that closes according to permanent magnetism, and, lean on the electromagnetic force of operating coil to overcome permanent magnetism power and permanent magnetism line of force change direction is realized from state and the mutual switching of closing state.Operate described clutch from closing state to when the state, the brake braking, the stator coil that is about to magneto engages, form the closed-loop path, p-m rotor with the magneto of driven shaft rotation makes stator coil produce induced field, and induced field stops the rotation of p-m rotor to realize braking and outwards generating simultaneously.

The utility model clutch be suitable for driven-mechanism and power source in conjunction with various (often from or often close of short duration separation or the of short duration joint) operating mode of separating.

Compare with existing electromagnetic clutch magnetic, the utility model has following advantage:

1. close, rapidly it is very little to consume energy from easy and simple to handle, the reliability height can be applicable to automation engineering well.

2. principal and subordinate wheel is separated with the gap and does not contact, and has overload slippage defencive function, engages and does not have friction when separating, and does not give birth to heat.

3. try hard to keep according to permanent magnetism and hold from state, close state, do not consume energy.

4. coil stationary is motionless, and power supply does not need brush and collecting ring.

5. clutch disengage process is utilized brake motor braking and generating, kills two birds with one stone.

7. pollute minimum.

8. few safeguard, the life-span is long.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one, also is the view of closing of embodiment one;

Fig. 2 is the figure that shifts out of part 26 among Fig. 1;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the A-A cutaway view of Fig. 3;

Schematic diagram when Fig. 5 is the lock out operation of embodiment one;

Fig. 6 be embodiment one from view;

Fig. 7 is the structural representation of the utility model embodiment two, also is the view of closing of embodiment two;

Fig. 8 be embodiment two from view;

Fig. 9 is the structural representation of the utility model embodiment three, also is the view of closing of embodiment three;

Figure 10 be embodiment three from view.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment one: show as Fig. 1 to Fig. 4.The utility model is made of driving wheel, driven pulley, stator, brake and control system.Inner spline sleeve 14,

cushion pad

18 and 20, end plate 21, driving shaft 15 and axle 24 that driving wheel is slidingly matched by magnetic conductive iron 26, spline short column 19, with spline short column 19 are formed, magnetic conductive iron 26 and spline short column 19 are coaxial fixed with axle 24, magnetic conductive iron 26 left sides are evenly equipped with sector,

cushion pad

18 and 20 and end plate 21 connects with inner spline sleeve 14, inner spline sleeve 14 connects with driving shaft 15 fixed; Driven pulley is by driven shaft 2, magnetic conduction cylinder 3, magnetic conductive disk 4,

non-magnetic ring

5 and 9 and permanent-magnetic clamp 7 fixed the forming of radial magnetizing, the right side of magnetic conductive disk 4 be evenly equipped with magnetic conductive iron 26 left sides on the corresponding sector of sector; Stator is by coil 23 and coil 27, permanent-magnetic clamp 25, magnetic guiding loop 8,

non-magnetic ring

6 and 10, magnetic conductive disk 22, non magnetic dish 11, sliding bearing or the magnetic bearing 12 of radial magnetizing, the end plate 17 that bearing 16 is installed, the non magnetic end plate 28 that bearing 29 is installed and non-magnetic cylinder 13 fixed forming; The interior circular polarity of permanent-magnetic clamp 7 and the outer circular polarity of permanent-magnetic clamp 25 are different; The coaxial assembling of driving wheel, driven pulley and stator, the equal each other external series gap of driving wheel, driven pulley and stator three does not contact; Brake 33 is a magneto, its armature spindle and 2 coaxial connections of driven shaft, the rotor of this generator is made of the rotor block with permanent magnetism that rotating shaft and pure p-m rotor body or permanent magnetic material and other combination of materials form, stator is made up of iron core and coil windings thereof and stator casing, when the p-m rotor body rotates, produce induced electromotive force in the stator coil winding, if the I/O of coil windings is connected, make the coil closure, the induction electric that produces will definitely form induced current, according to Lenz's law, the magnetic field that induced current produces will stop the rotation of p-m rotor body, and brake 33 is in work (braking) state, if the I/O of coil windings is separated, no current in the coil windings does not just have induction field naturally, and brake 33 just is in non operating state; Control system is made of the Control Node 32 and the connection lead of rectification voltage regulator 30, storage battery 31, controller 1, controller 1, and

coil

23 and 27 via controllers 1 are from storage battery 31 power takings.The shell of described clutch stator and brake 1 is fixed in the equipment of this clutch of use or the basis of mechanism.The quantity of the sector on described driving wheel, the driven pulley requires design to determine according to reality.

Operation principle: when

coil

23 and 27 was not switched on, dotted line I had represented the permanent magnet flux loop among Fig. 1, according to the magnetic resistance principle, pass the magnetic line of force in crack between the driven pulley, avoid fan groove, focus on sector, when driving wheel turns over an angle (angular displacement) with respect to driven pulley, the magnetic line of force still makes great efforts to avoid fan groove, focus on sector, the result produces drag torque to driven pulley, forces driven pulley to follow driving wheel and rotates, described clutch is in the state of closing, and shows as Fig. 1; Operation control 1, give coil 23 energisings from storage battery 31, the electromagnetism of its generation is logical shown in dotted line II and III among Fig. 5, the direction of logical II of electromagnetism and III is opposite with the direction of the logical I of permanent magnetism, electromagnetic force overcomes permanent magnetism power, and in clearance G, set up magnetic field, make 22 pairs of magnetic conductive iron of magnetic conductive disk 26 produce attraction, magnetic conductive iron 26 is to magnetic conductive disk 22 accelerated motions, the half that surpasses the axial dimension of clearance G when its displacement, magnetic resistance between magnetic conductive iron 26 and the magnetic conductive disk 22 will be less than the magnetic resistance between magnetic conductive iron 26 and the magnetic conductive disk 4, the increasing permanent magnetism line of force will be by path and the direction closure shown in the logical III of electromagnetism, permanent magnetism is logical to be superimposed with electromagnetism is logical, thereby make magnetic conductive iron 26 rush at magnetic conductive disk 22 with increasing acceleration, the spline short column 19 that connects with magnetic conductive iron 26 slides into the dead point to the right in inner spline sleeve 14, at this moment magnetic conductive iron 26 is apart from magnetic conductive disk 22 1 very little gaps, make coil 23 outages simultaneously, dotted line IV shows among the logical loop of permanent magnetism such as Fig. 6 as a result, there is not magneticaction between driving wheel and the driven pulley, driven pulley is static, driving wheel idle running, described clutch is in from state, and whole separation process only needs a few tens of milliseconds; Controller 1 gives coil 27 energisings from storage battery 31, and described clutch is engaged, and its principle is similar with aforesaid separation principle; Operate described clutch separation, when controller 1 was given coil 23 energisings, closed its Control Node 32 made 33 pairs of driven shafts of brake 2 produce brake torque, and outwards generating simultaneously is by 31 chargings of rectification voltage regulator 30 accumulators.During brake 33 work, energy output is limited, and is may be not enough needed during operated clutch, should be from described clutch system external complement electric energy accumulators 31.

Embodiment two: show as Fig. 7.To embodiment one described clutch, remove

non-magnetic ring

5 and 9, change the assembly of magnetic conduction cylinder 3 and permanent-magnetic clamp 7 into magnetic conductive cylinder 34, its shape and size are identical with the former, and other is constant.Satisfying under the clutch performance requirement condition, doing the energy simplified structure like this, reducing cost, improving the high-temperature adaptability of driven pulley.Fig. 7 closes view for present embodiment, Fig. 8 be present embodiment from view.Dotted line V, VI are the path signal of permanent magnet flux among the figure.

Embodiment three: show as Fig. 9.To embodiment one described clutch, only change permanent-magnetic clamp 25 and magnetic guiding loop 8 into magnetic conductive cylinder 35, satisfying under the clutch performance requirement condition, do the energy simplified structure like this, reduce cost, improve the high-temperature adaptability of stator.Fig. 9 closes view for present embodiment, Figure 10 be present embodiment from view.Dotted line VII, VIII are the path signal of permanent magnet flux among the figure.

Claims

1. bi-stable magnetic clutch, it is characterized in that: permanent magnet and operating coil are set between driving wheel and driven pulley, the brake of magneto formula is set on driven shaft, all trying hard to keep and holding from state, the state that closes according to permanent magnetism, and, lean on the electromagnetic force of operating coil to overcome permanent magnetism power and permanent magnetism line of force change direction is realized from state and the mutual switching of closing state; Operate described clutch from closing state to when the state, the brake braking, the stator coil that is about to magneto engages, form the closed-loop path, p-m rotor with the magneto of driven shaft rotation makes stator coil produce induced field, and induced field stops the rotation of p-m rotor to realize braking and outwards generating simultaneously; Control system is made up of rectification voltage regulator, storage battery, controller, Control Node.

2. bi-stable magnetic clutch according to claim 1 is characterized in that: be made of driving wheel, driven pulley, stator, brake and control system; Inner spline sleeve (14), cushion pad (18) and (20), the end plate (21) that driving wheel is slidingly matched by magnetic conductive iron (26), spline short column (19), with spline short column (19), driving shaft (15) and spool (24) are formed, magnetic conductive iron (26) and spline short column (19) are coaxial fixed with axle (24), magnetic conductive iron (26) left side is evenly equipped with sector, and cushion pad (18) and (20) and end plate (21) connect with inner spline sleeve (14), inner spline sleeve (14) connects with driving shaft (15) fixed; Driven pulley is by fixed the forming of permanent-magnetic clamp (7) of driven shaft (2), magnetic conduction cylinder (3), magnetic conductive disk (4), non-magnetic ring (5) and (9) and radial magnetizing, the right side of magnetic conductive disk (4) be evenly equipped with magnetic conductive iron (26) left side on the corresponding sector of sector; Stator is by coil (23) and coil (27), permanent-magnetic clamp (25), magnetic guiding loop (8), non-magnetic ring (6) and (10), magnetic conductive disk (22), non magnetic dish (11), sliding bearing or the magnetic bearing (12) of radial magnetizing, the end plate (17) that bearing (16) are installed, the non magnetic end plate (28) that bearing (29) is installed and fixed the forming of non-magnetic cylinder (13); The outer circular polarity of the interior circular polarity of permanent-magnetic clamp (7) and permanent-magnetic clamp (25) is different; The coaxial assembling of driving wheel, driven pulley and stator, the equal each other external series gap of driving wheel, driven pulley and stator three does not contact; Brake (33) is a magneto, its armature spindle and coaxial connection of driven shaft (2), the rotor of this generator is made of the rotor block with permanent magnetism that rotating shaft and pure p-m rotor body or permanent magnetic material and other combination of materials form, and stator is made up of iron core and coil windings thereof and stator casing; Control system is made of the Control Node (32) and the connection lead of rectification voltage regulator (30), storage battery (31), controller (1), controller (1), and coil (23) and (27) via controller (1) are from storage battery (31) power taking; The shell of described clutch stator and brake (1) is fixed in the equipment of this clutch of use or the basis of mechanism, and the quantity of the sector on described driving wheel, the driven pulley requires design to determine according to reality.

3. bi-stable magnetic clutch according to claim 1 and 2 is characterized in that: remove non-magnetic ring (5) and (9), change the assembly of magnetic conduction cylinder (3) and permanent-magnetic clamp (7) into magnetic conductive cylinder (34), its shape and size are identical with the former, and other is constant.

4. bi-stable magnetic clutch according to claim 1 and 2 is characterized in that: only change permanent-magnetic clamp (25) and magnetic guiding loop (8) into magnetic conductive cylinder (35).