Nothing Special   »   [go: up one dir, main page]

CN109217629A - Elevator ring type permanent magnet brake - Google Patents

Elevator ring type permanent magnet brake Download PDF

Info

Publication number
CN109217629A
CN109217629A CN201811309014.6A CN201811309014A CN109217629A CN 109217629 A CN109217629 A CN 109217629A CN 201811309014 A CN201811309014 A CN 201811309014A CN 109217629 A CN109217629 A CN 109217629A
Authority
CN
China
Prior art keywords
permanent magnet
magnetic field
brake
ring type
electromagnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811309014.6A
Other languages
Chinese (zh)
Inventor
黄海洋
高颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Vocational University
Original Assignee
Suzhou Vocational University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Vocational University filed Critical Suzhou Vocational University
Priority to CN201811309014.6A priority Critical patent/CN109217629A/en
Publication of CN109217629A publication Critical patent/CN109217629A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K49/00Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/10Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
    • H02K49/104Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
    • H02K49/106Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The present invention provides a kind of elevator ring type permanent magnet brake, including the first permanent magnet, the second permanent magnet and electromagnet;Second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft;First permanent magnet provides the first magnetic field, and second permanent magnet provides the second magnetic field, and the second magnetic field described in first magnetic field suction is to provide the brake force for making second permanent magnet stop rotating;The electromagnet is set between first permanent magnet and second permanent magnet, and the electromagnet selectively provides third magnetic field, the third magnetic field controls influence of first magnetic field to second magnetic field to control the brake force, the elevator ring type permanent magnet brake uses magnetic braking, can effectively avoid all kinds of mechanical breakdowns present in mechanical braking.

Description

Elevator ring type permanent magnet brake
Technical field
The present invention relates to elevator brake fields, and in particular to a kind of elevator ring type permanent magnet brake.
Background technique
Elevator brake is to guarantee that the critical component that elevator is normal, is safely operated is braked when lift car is out of service Device brake sticking brake makes lift car be maintained at leveling or desired position.
Traditional elevator brake includes that drum brake, block brake and butterfly brake, working principle are basic It is identical, i.e., when electromagnet obtains electric, overcomes the elastic force of spring that brake scotch and braked wheel are disengaged (declutching) by electromagnetic force, work as electromagnetism When iron power loss, brake scotch is bonded realization braking (band-type brake) with braked wheel under the action of the spring.
Due to above-mentioned traditional elevator brake by spring push brake shoe reset braking, there are the problem of include: Spring force failure will cause brake force it is insufficient or lose, brake block abrasion causes that brake force is insufficient, there are mechanical movement card resistance shadows Ring braking etc..
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of elevator ring type permanent magnet brake, the elevator ring type permanent magnet brake The mechanical parts such as spring, brake shoe are eliminated, can obviously reduce the failure rate of brake, enhance the safety of brake.
Present invention employs following technical solutions:
A kind of elevator ring type permanent magnet brake, including the first permanent magnet, the second permanent magnet and electromagnet;
Second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft;
First permanent magnet provides the first magnetic field, and second permanent magnet provides the second magnetic field, the first magnetic field suction institute The second magnetic field is stated to provide the brake force for making second permanent magnet stop rotating;
The electromagnet is set between first permanent magnet and second permanent magnet, and the electromagnet selectively mentions For third magnetic field, the third magnetic field controls influence of first magnetic field to second magnetic field to control the brake force.
Preferably, the electromagnet includes iron core and coil, and passes through the big of the electric current of the coil and the brake force There are substantial linear corresponding relationships between small.
Preferably, the third magnetic field is selectively cooperated with first magnetic field with the second magnetic field, selectively to increase The big brake force.
Preferably, including magnetic loop, the magnetic loop include ferromagnetic material, for making first magnetic field, described second Magnetic field and the third magnetic field propagate through.
Preferably, including the rotor for being fixed on the machine shaft and being radially extended relative to the machine shaft, and The rotor outer periphery is fixed with second permanent magnet.
Preferably, including the fixed frame around the rotor, and first permanent magnet and the electromagnet are fixed on institute State fixed frame.
Preferably, the pole reversal of first permanent magnet and second permanent magnet is arranged, i.e., described first permanent magnet N(or S) extremely correspond to the S(or N of second permanent magnet) pole.
Preferably, second permanent magnet is separated into several and is distributed in the rotor outer periphery.
Preferably, first permanent magnet is separated into several and is uniformly surrounded on the rotor outer periphery, and isolate Quantity is corresponding with second permanent magnet.
Preferably, including the rotor for being fixed on the machine shaft and being radially extended relative to the machine shaft, and The rotor is second permanent magnet.
Compared with prior art, the beneficial effects of the present invention are: brake force is by between the first permanent magnet and the second permanent magnet Attraction provide, since permanent magnet can provide stable magnetic force, the problem of avoiding spring failure, and there is no similar brake shoes Substance contact, also not will cause abrasion;Declutch only needed with band-type brake by electromagnet, power loss control, declutch and band-type brake mistake The variation that magnetic field is only existed in journey, it to be not in mechanical jamming failure that there is no the mechanical actions in conventional brake, and reacts Speed is faster;In addition, brake force can be realized and be precisely controlled by the size and Orientation of electric current in control electromagnet, enhancing system Dynamic device adapts to the ability of elevator difference operating condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the elevator ring type permanent magnet brake of the embodiment of the present invention.
Fig. 2 is the magnetic field schematic diagram under band-type brake state corresponding with Fig. 1.
Fig. 3 is the magnetic field schematic diagram under the state that declutches corresponding with Fig. 1.
Fig. 4 is the rotor of first embodiment of the invention and the structural schematic diagram of the second permanent magnet.
Fig. 5 is the coupling structure schematic diagram of rotor corresponding with Fig. 4 and the second permanent magnet.
Fig. 6 is the rotor of second embodiment of the invention and the structural schematic diagram of the second permanent magnet.
Description of symbols:
First permanent magnet: 1
Second permanent magnet: 2
Electromagnet: 3
Rotor: 4 retaining rings: 41 flanges: 42
Machine shaft: 5 keys: 51
Fixed frame: 6.
Specific embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment detailed It is described as follows.
Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6.A kind of elevator ring type permanent magnetism system of one embodiment of the invention Dynamic device, as shown in Figure 1, including the first permanent magnet 1, the second permanent magnet 2, electromagnet 3, rotor 4, machine shaft 5 and fixed frame 6.
Rotor 4 is set in machine shaft 5, and between rotor 4 and machine shaft 5 by key 51 be fixedly connected realize it is synchronous Rotation.Rotor 4 is radially extended relative to machine shaft 5, and extended spot is fixed frame 6 around a circle.
Rotor 4 can be directly as the second permanent magnet 2, i.e., rotor 4 can be in itself is integrated into permanent-magnet material.? Combined type can be used, i.e., as shown in Figure 1, rotor 4 and the second permanent magnet 2 are that combination is formed, rotor 4 is by non-permanent-magnet materials system At the second permanent magnet 2 is fixedly installed in the periphery of rotor 4.First permanent magnet 1 and electromagnet 3 are fixed on fixed frame 6, fixed frame 6 It is made by ferromagnetic material, passing through and form magnetic loop in favor of magnetic induction line.
The setting of the pole reversal of first permanent magnet 1 and the second permanent magnet 2, i.e. extremely corresponding second permanent magnetism of the N of the first permanent magnet 1 The pole N of extremely corresponding second permanent magnet 2 of the S of the pole S of body 2 or the first permanent magnet 1, effect be realize the first permanent magnet 1 with Mutual magnetic force between second permanent magnet 2 attracts, i.e. the first permanent magnet 1 can produce the first magnetic field, and the second permanent magnet 2 can produce the Braking is played the role of by the magnetic force attraction between first time magnetic field and the second magnetic field in two magnetic fields.
Electromagnet 3 is set between the first permanent magnet 1 and the second permanent magnet 2, and electromagnet 3 is fixed on fixed frame 6, electricity Magnet 3 is formed by iron core and coil encircling rotor 4.By passing to the electric current of different directions and size, electromagnet 3 to electromagnet 3 Will generate magnetic direction and magnetic force third magnetic field of different sizes, and by the size of the electric current of coil 31 and brake force it Between there are rough linear corresponding relations.The first magnetic field can be controlled to the shadow in the second magnetic field by selectively providing third magnetic field It rings, the final control realized to brake force.
The specific control mode in third magnetic field is as shown in Figure 2,3, when there is no electric current to pass through in electromagnet 3, the first permanent magnetism The pole N of body 1 and the pole S of the second permanent magnet 2 attract each other, and magnetic induction line passes through fixed frame 6, electromagnet 3 forms magnetic loop, rotor 4 It is braked under the action of magnetic attraction of first permanent magnet 1 to the second permanent magnet 2, and then realizes the braking to machine shaft 5.When When selectively passing to electric current in the coil of electromagnet 3, the third magnetic field that electromagnet 3 generates can deviate the first magnetic in a manner of magnetic Field and the second magnetic field, to make the field weakening to attract each other between the first magnetic field and the second magnetic field, or even are decreased to zero, at this time Corresponding brake force, which gradually weakens, even to disappear, and rotor 4 becomes non-brake state from being braked state.
In addition, third magnetic field can selectively cooperate with the first magnetic field, the second magnetic field, to selectively increase braking Power.For example, can pass through when the brake force deficiency caused by the magnetic attraction between the first magnetic field and the second magnetic field and change third magnetic field Direction and size, the auxiliary magnetic field of magnetic attraction between the first magnetic field and the second magnetic field can be enhanced by generating third magnetic field.
As shown in figure 4, the second permanent magnet 2 is separated into several mutually independent individuals, and each separation individual surround and turns The periphery of son 4 is uniformly distributed.At this point, corresponding with the arrangement form of above-mentioned second permanent magnet 2, the first permanent magnet 1 is also separated It for several and is uniformly surrounded on the independent individual of 4 periphery of rotor, and the quantity isolated and the quantity of the second permanent magnet 2 are answered It corresponds to each other.In this embodiment, as shown in figure 4, the bottom of the second permanent magnet is stuck in the card slot of rotor 4 to realize that radial direction is solid Fixed connection;As shown in figure 5, the upper left side edge of rotor 4 has flange 42,2 side of the second permanent magnet is resisted against on flange 42, another Side, which is fastened by retaining ring 41 by screw, to stop, so that the axial restraint realized between rotor 4 and the second permanent magnet 2 couples.
In addition, as shown in fig. 6, the second permanent magnet 2 can also be integral formula around being fixed on the annulus of rotor 4, at this point, First permanent magnet 1 can also be integral the annulus for being surrounded on rotor 4 of formula.
Compared with prior art, the brake force of the elevator ring type permanent magnet brake is by the first permanent magnet 1 and the second permanent magnet 2 Between attraction provide, since permanent magnet can provide stable magnetic force, the problem of avoiding spring failure, and there is no similar The substance of brake shoe contacts, and also not will cause abrasion.The variation in magnetic field is only existed in the process with band-type brake in addition, declutching, and there is no pass Mechanical action in system brake, is not in mechanical jamming failure, and reaction speed is faster.Meanwhile by controlling electromagnet 3 The size and Orientation of middle electric current can realize to the size of brake force and be precisely controlled that enhancing brake adapts to elevator difference operating condition Ability.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention. It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and It is changed and retouched made by range, belongs to scope of patent protection of the invention.

Claims (10)

1. a kind of elevator ring type permanent magnet brake, which is characterized in that including the first permanent magnet, the second permanent magnet and electromagnet;
Second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft;
First permanent magnet provides the first magnetic field, and second permanent magnet provides the second magnetic field, the first magnetic field suction institute The second magnetic field is stated to provide the brake force for making second permanent magnet stop rotating;
The electromagnet is set between first permanent magnet and second permanent magnet, and the electromagnet selectively mentions For third magnetic field, the third magnetic field controls influence of first magnetic field to second magnetic field to control the brake force.
2. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that the electromagnet includes iron core and line Circle, and there are substantial linear corresponding relationships by between the electric current of the coil and the size of the brake force.
3. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that the third magnetic field selectively with institute It states the first magnetic field and the second magnetic field to cooperate, selectively to increase the brake force.
4. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that including magnetic loop, the magnetic loop packet Ferromagnetic material is included, for propagating through first magnetic field, second magnetic field and the third magnetic field.
5. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that including be fixed on the machine shaft and Relative to the rotor that the machine shaft radially extends, and the rotor outer periphery is fixed with second permanent magnet.
6. elevator ring type permanent magnet brake as claimed in claim 5, which is characterized in that including the fixation around the rotor Frame, and first permanent magnet and the electromagnet are fixed on the fixed frame.
7. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that first permanent magnet and described second The pole reversal of permanent magnet is arranged, i.e., the N(or S of described first permanent magnet) extremely correspond to the S(or N of second permanent magnet) pole.
8. elevator ring type permanent magnet brake as claimed in claim 5, which is characterized in that second permanent magnet is separated into several It is a and be distributed in the rotor outer periphery.
9. elevator ring type permanent magnet brake as claimed in claim 8, which is characterized in that first permanent magnet is separated into several Quantity that is a and being uniformly surrounded on the rotor outer periphery, and isolate is corresponding with second permanent magnet.
10. elevator ring type permanent magnet brake as described in claim 1, which is characterized in that including being fixed on the machine shaft And the rotor radially extended relative to the machine shaft, and the rotor is second permanent magnet.
CN201811309014.6A 2018-11-05 2018-11-05 Elevator ring type permanent magnet brake Pending CN109217629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811309014.6A CN109217629A (en) 2018-11-05 2018-11-05 Elevator ring type permanent magnet brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811309014.6A CN109217629A (en) 2018-11-05 2018-11-05 Elevator ring type permanent magnet brake

Publications (1)

Publication Number Publication Date
CN109217629A true CN109217629A (en) 2019-01-15

Family

ID=64995089

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811309014.6A Pending CN109217629A (en) 2018-11-05 2018-11-05 Elevator ring type permanent magnet brake

Country Status (1)

Country Link
CN (1) CN109217629A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006699A1 (en) * 2004-03-11 2005-10-06 Kendrion Binder Magnete Gmbh Electromagnetic brake for electric drive motor, has armature disk pressed by magnetic field strength of cuff-shaped permanent magnet against spring strength, where radial cross sectional dimension of magnet is less than its axial dimension
CN101115937A (en) * 2005-02-15 2008-01-30 康卓彬德电磁技术有限公司 Electromagnetic permanent magnet brake
CN101795953A (en) * 2007-09-07 2010-08-04 奥蒂斯电梯公司 Elevator brake with magneto-rheological fluid
CN102428020A (en) * 2009-06-12 2012-04-25 三菱电机株式会社 Brake device for elevator hoist
CN103457429A (en) * 2013-08-28 2013-12-18 日立电梯电机(广州)有限公司 Inner rotor permanent magnet synchronous magnetic resistance type traction drive device
CN104632952A (en) * 2013-11-06 2015-05-20 三菱电机上海机电电梯有限公司 Electromagnetic brake
CN205723050U (en) * 2016-04-11 2016-11-23 焦作市华鹰机电技术有限公司 A kind of high-performance electric magnetic executor, brake and compressor
CN107215744A (en) * 2017-07-19 2017-09-29 金陵科技学院 A kind of elevator permanent-magnetic is with the magnetorheological deceleration buffer device being combined
CN212086046U (en) * 2018-11-05 2020-12-04 苏州市职业大学 Ring type permanent-magnet brake for elevator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006699A1 (en) * 2004-03-11 2005-10-06 Kendrion Binder Magnete Gmbh Electromagnetic brake for electric drive motor, has armature disk pressed by magnetic field strength of cuff-shaped permanent magnet against spring strength, where radial cross sectional dimension of magnet is less than its axial dimension
CN101115937A (en) * 2005-02-15 2008-01-30 康卓彬德电磁技术有限公司 Electromagnetic permanent magnet brake
CN101795953A (en) * 2007-09-07 2010-08-04 奥蒂斯电梯公司 Elevator brake with magneto-rheological fluid
CN102428020A (en) * 2009-06-12 2012-04-25 三菱电机株式会社 Brake device for elevator hoist
CN103457429A (en) * 2013-08-28 2013-12-18 日立电梯电机(广州)有限公司 Inner rotor permanent magnet synchronous magnetic resistance type traction drive device
CN104632952A (en) * 2013-11-06 2015-05-20 三菱电机上海机电电梯有限公司 Electromagnetic brake
CN205723050U (en) * 2016-04-11 2016-11-23 焦作市华鹰机电技术有限公司 A kind of high-performance electric magnetic executor, brake and compressor
CN107215744A (en) * 2017-07-19 2017-09-29 金陵科技学院 A kind of elevator permanent-magnetic is with the magnetorheological deceleration buffer device being combined
CN212086046U (en) * 2018-11-05 2020-12-04 苏州市职业大学 Ring type permanent-magnet brake for elevator

Similar Documents

Publication Publication Date Title
US10180169B2 (en) Driving device for moving a tailgate
JP2007195342A (en) Motor with brake and elevator drive system using the motor
JPS5947538A (en) Solenoid clutch-brake
CN104836372B (en) Cone rotor AC permanent magnet brake motor
US1519417A (en) Electromagnetic clutch
CN109217629A (en) Elevator ring type permanent magnet brake
GB611809A (en) Improvements in or relating to magnetic braking devices for electric induction motors
CN109412384A (en) Elevator ring type external rotor permanent magnet brake
CN212086046U (en) Ring type permanent-magnet brake for elevator
CN109095379A (en) Elevator disc permanent-magnet brake
CN109179139A (en) Elevator disk permanent magnet brake
US2539836A (en) Electric motor brake
CN109205497A (en) Elevator drum-type permanent magnet brake
CN212183374U (en) Elevator ring type outer rotor permanent magnet brake
CN212076272U (en) Disc type permanent magnet brake for elevator
CN211871253U (en) Drum-type permanent-magnet brake for elevator
JP2014159319A (en) Elevator device and brake gear of the same
KR101702035B1 (en) A Motor using the control magnetic line of force of permanent magnet
CN101202181A (en) Permanent magnetism contactor operation mechanism
CN104919687A (en) Magnetic brake having reduced-notching hysteresis
JP2008144853A (en) Electromagnetic brake and electromagnetic clutch equipped with wear detection means for friction plate
CN105978291B (en) A kind of linear motor permanent magnet brake
JPS5646175A (en) Proportional control valve
US10274102B2 (en) Valve actuator, valve and method for controlling a valve actuator
JP2010144852A (en) Spring actuated electromagnetic brake and motor equipped therewith

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination