CN109217629A - Elevator ring type permanent magnet brake - Google Patents
Elevator ring type permanent magnet brake Download PDFInfo
- 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
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- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
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- 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
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.
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)
| 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 |
-
2018
- 2018-11-05 CN CN201811309014.6A patent/CN109217629A/en active Pending
Patent Citations (9)
| 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 |
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