CN109179139A - Elevator disk permanent magnet brake - Google Patents
Elevator disk permanent magnet brake Download PDFInfo
- Publication number
- CN109179139A CN109179139A CN201811308214.XA CN201811308214A CN109179139A CN 109179139 A CN109179139 A CN 109179139A CN 201811308214 A CN201811308214 A CN 201811308214A CN 109179139 A CN109179139 A CN 109179139A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- brake
- magnetic field
- group
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
-
- 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
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
-
- 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
- B66D5/30—Operating devices electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The present invention provides a kind of elevator disk permanent magnet brake, including the mutually independent brake assemblies of several groups, and brake assemblies described in every group include the first permanent magnet, the second permanent magnet and electromagnet；Second permanent magnet described in brake assemblies described in every group is connected firmly with machine shaft, and is rotated with the machine shaft；First permanent magnet described in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet is provided which 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；Electromagnet described in brake assemblies described in every group is all 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；Be provided between brake assemblies described in two adjacent groups for obstruct magnetic field every magnet, the elevator disk 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 disk 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 disk 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 disk permanent magnet brake, the elevator disk 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 disk permanent magnet brake, which is characterized in that including the mutually independent brake assemblies of several groups, made described in every group
Dynamic component includes the first permanent magnet, the second permanent magnet and electromagnet；
Second permanent magnet described in brake assemblies described in every group is connected firmly with machine shaft, and is rotated with the machine shaft；
First permanent magnet described in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet is provided which the second magnetic
, the second magnetic field described in first magnetic field suction is to provide the brake force for making second permanent magnet stop rotating；
Electromagnet described in brake assemblies described in every group is all set between first permanent magnet and second permanent magnet, and
The electromagnet selectively provides third magnetic field, and the third magnetic field controls first magnetic field to the shadow in second magnetic field
It rings to control the brake force；
Be provided between brake assemblies described in two adjacent groups for obstruct magnetic field every magnet.
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 periphery of the rotor is fixed with several second permanent magnets being parallel to each other.
Preferably, including the fixed frame around the rotor, and first permanent magnet, the electromagnet and described every magnetic
Body is both secured to the 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, each second permanent magnet in brake assemblies described in every group is separated into several, and surround and be distributed in
The rotor outer periphery.
Preferably, each first permanent magnet in brake assemblies described in every group is separated into several and is uniformly surrounded on institute
The quantity stating rotor outer periphery, and isolating is corresponding with second permanent magnet.
Preferably, it is described every magnet include with barrier or armoured magnetic field function substance or component.
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；The variation declutched and only exist magnetic field during band-type brake, there is no in conventional brake
Mechanical action, be not in mechanical jamming failure, and reaction speed is faster；In addition, by control electromagnet in electric current it is big
Small and direction can realize to brake force and be precisely controlled that enhancing brake adapts to the ability of elevator difference operating condition；Using several groups
Mutually independent brake assemblies, if one group of failure, other organize still achievable braking, enhance safety and stability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the elevator disk 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 rotor of second embodiment of the invention and the structural schematic diagram of the second permanent magnet.
Description of symbols:
Brake assemblies: Q
First permanent magnet: 1
Second permanent magnet: 2
Electromagnet: 3 rotors: 4
Machine shaft: 5 keys: 51
Fixed frame: 6
Every magnet: 7.
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 and Fig. 5.A kind of elevator disk permanent magnet braking of one embodiment of the invention
Device.As shown in phantom in Figure 1, which includes that three groups of brake assemblies Q, every group of brake assemblies Q include
First permanent magnet 1, the second permanent magnet 2 and electromagnet 3.It is worked independently from each other between three groups of brake assemblies Q, i.e. every group of brake assemblies
Q can independently realize the braking to rotor 4, and a brake assemblies Q breaks down, and will not influence other brake assemblies Q work.
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.
As shown in Figure 1, rotor 4 and the combination of the second permanent magnet 2 connect firmly, rotor 4 is made of non-permanent-magnet materials, three
Second permanent magnet 2 is fixedly installed in the periphery of rotor 4, and is parallel to each other between three the second permanent magnets 2.First permanent magnet 1, electricity
Magnet 3 and it is both secured to fixed frame 6 every magnet 7, fixed frame 6 is made by ferromagnetic material, passing through and being formed in favor of magnetic induction line
Magnetic loop.
In every group of brake assemblies Q, the polarity of the first permanent magnet 1 and the second permanent magnet 2 is oppositely arranged, i.e. the first permanent magnet
The pole N of extremely corresponding second permanent magnet 2 of S of the pole S or the first permanent magnet 1 of extremely corresponding second permanent magnet 2 of 1 N, effect
It is to realize that the mutual magnetic force between the first permanent magnet 1 and the second permanent magnet 2 attracts, i.e., the first permanent magnet 1 can produce the first magnetic field,
Second permanent magnet 2 can produce the second magnetic field, attract the work for playing braking by the magnetic force between first time magnetic field and the second magnetic field
With.
In every group of brake assemblies Q, electromagnet 3 is all set between the first permanent magnet 1 and the second permanent magnet 2, and electromagnet 3
It is fixed on fixed frame 6, electromagnet 3 is formed by iron core and coil encircling rotor 4.By to electromagnet 3 pass to different directions and
The electric current of size, electromagnet 3 will generate magnetic direction and magnetic force third magnetic field of different sizes, and the electric current for passing through coil
There are rough linear corresponding relations between the size of brake force, and the first magnetic field can be controlled by selectively providing third magnetic field
Influence to the second magnetic field, 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 in every group of brake assemblies Q is separated into several mutually independent individuals,
And each separation individual can the periphery of surrounding rotor 4 be uniformly distributed.At this point, it is corresponding with the arrangement form of above-mentioned second permanent magnet 2,
The first permanent magnet 1 in every group of brake assemblies Q is also separated into several and is uniformly surrounded on independent of 4 periphery of rotor
Body, and the quantity isolated should be corresponded to each other with the quantity of the second permanent magnet 2.
In addition, as shown in figure 5, the second permanent magnet 2 in every group of brake assemblies Q can also be integral formula around being fixed on
The annulus of 4 periphery of rotor, at this point, first permanent magnet 1 corresponding with the second permanent magnet 2 can also be integral formula be surrounded on rotor
4 annulus.
In order to guarantee that the magnetic field between two adjacent groups brake assemblies Q will not influence each other, between two adjacent groups brake assemblies Q
It is provided with every magnet 7, every magnet 7 for obstructing magnetic field, can be substance or component with barrier magnetic field function every magnet 7,
It is also possible to the substance or component with armoured magnetic field function.If every magnet 7 be that magnetic field is obstructed by way of shielding, every magnetic
Body 7 may be designed as each brake assemblies Q being wrapped in interior form.
Compared with prior art, the brake force of the elevator disk permanent magnet brake by first in every group of brake assemblies Q forever
Attraction between magnet 1 and the second permanent magnet 2 provides, and since permanent magnet can provide stable magnetic force, avoids spring failure
The problem of, and there is no the substances of similar brake shoe to contact, and also not will cause abrasion.In addition, declutching and being only existed during band-type brake
The variation in magnetic field is not in mechanical jamming failure there is no the mechanical action in conventional brake, and reaction speed is faster.
Meanwhile by the size and Orientation of electric current in control electromagnet 3, the size of brake force can be realized and be precisely controlled, enhancing braking
The ability of device adaptation elevator difference operating condition.In addition, due to using three groups of mutually independent brake assemblies Q, if one group of appearance event
Barrier, other organize still achievable braking, enhance the safety and stability of brake operation.
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 disk permanent magnet brake, which is characterized in that including the mutually independent brake assemblies of several groups, described in every group
Brake assemblies include the first permanent magnet, the second permanent magnet and electromagnet；
Second permanent magnet described in brake assemblies described in every group is connected firmly with machine shaft, and is rotated with the machine shaft；
First permanent magnet described in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet is provided which the second magnetic
, the second magnetic field described in first magnetic field suction is to provide the brake force for making second permanent magnet stop rotating；
Electromagnet described in brake assemblies described in every group is all set between first permanent magnet and second permanent magnet, and
The electromagnet selectively provides third magnetic field, and the third magnetic field controls first magnetic field to the shadow in second magnetic field
It rings to control the brake force；
Be provided between brake assemblies described in two adjacent groups for obstruct magnetic field every magnet.
2. elevator disk 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 disk 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 disk 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 disk permanent magnet brake as described in claim 1, which is characterized in that including be fixed on the machine shaft and
Periphery relative to the rotor that the machine shaft radially extends, and the rotor is fixed with several described to be parallel to each other
Two permanent magnets.
6. elevator disk permanent magnet brake as claimed in claim 5, which is characterized in that including the fixation around the rotor
Frame, and first permanent magnet, the electromagnet and described the fixed frame is both secured to every magnet.
7. elevator disk 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 disk permanent magnet brake as claimed in claim 5, which is characterized in that each institute in brake assemblies described in every group
It states the second permanent magnet and is separated into several, and surround and be distributed in the rotor outer periphery.
9. elevator disk permanent magnet brake as claimed in claim 8, which is characterized in that each institute in brake assemblies described in every group
It states the first permanent magnet and is separated into several and the quantity that is uniformly surrounded on the rotor outer periphery, and isolates and second permanent magnetism
Body is corresponding.
10. elevator disk permanent magnet brake as claimed in claim 5, which is characterized in that described to be obstructed every magnet including having
Or the substance or component of armoured magnetic field function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308214.XA CN109179139A (en) | 2018-11-05 | 2018-11-05 | Elevator disk permanent magnet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308214.XA CN109179139A (en) | 2018-11-05 | 2018-11-05 | Elevator disk permanent magnet brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109179139A true CN109179139A (en) | 2019-01-11 |
Family
ID=64941838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308214.XA Pending CN109179139A (en) | 2018-11-05 | 2018-11-05 | Elevator disk permanent magnet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109179139A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655425A (en) * | 2004-02-12 | 2005-08-17 | 吴志宏 | Generator utilizing magnetic field energy |
| CN101442244A (en) * | 2008-09-01 | 2009-05-27 | 白云生 | Permanent magnet motor |
| CN101795953A (en) * | 2007-09-07 | 2010-08-04 | 奥蒂斯电梯公司 | Elevator brake with magneto-rheological fluid |
| CN101903276A (en) * | 2007-12-10 | 2010-12-01 | 奥蒂斯电梯公司 | Elevator brake device including permanent magnet bias to apply a braking force |
| CN201722034U (en) * | 2010-05-18 | 2011-01-26 | 张安戈 | Gearless tractor adopting magnetorheological fluid brake |
| CN102249136A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN102730527A (en) * | 2012-07-11 | 2012-10-17 | 福建省特种设备检验研究院 | Magnetorheological elevator traction drive device |
| CN103434911A (en) * | 2013-09-16 | 2013-12-11 | 福州大学 | Elevator dragging clutch brake system and method and device based on magneto-rheological effect |
| CN106395672A (en) * | 2016-12-15 | 2017-02-15 | 福州大学 | Magneto-rheological effect-based elevator braking device with automatic protection function and elevator braking method |
| CN107416637A (en) * | 2017-06-16 | 2017-12-01 | 北京建筑大学 | A kind of hoist falling-proof system |
| CN211971429U (en) * | 2018-11-05 | 2020-11-20 | 苏州市职业大学 | Disc type permanent magnet brake for elevator |
-
2018
- 2018-11-05 CN CN201811308214.XA patent/CN109179139A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655425A (en) * | 2004-02-12 | 2005-08-17 | 吴志宏 | Generator utilizing magnetic field energy |
| CN101795953A (en) * | 2007-09-07 | 2010-08-04 | 奥蒂斯电梯公司 | Elevator brake with magneto-rheological fluid |
| CN101903276A (en) * | 2007-12-10 | 2010-12-01 | 奥蒂斯电梯公司 | Elevator brake device including permanent magnet bias to apply a braking force |
| CN101442244A (en) * | 2008-09-01 | 2009-05-27 | 白云生 | Permanent magnet motor |
| CN201722034U (en) * | 2010-05-18 | 2011-01-26 | 张安戈 | Gearless tractor adopting magnetorheological fluid brake |
| CN102249136A (en) * | 2010-05-18 | 2011-11-23 | 沈阳优力机电设备有限公司 | Gear-free tractor with magnetorheological fluid brake |
| CN102730527A (en) * | 2012-07-11 | 2012-10-17 | 福建省特种设备检验研究院 | Magnetorheological elevator traction drive device |
| CN103434911A (en) * | 2013-09-16 | 2013-12-11 | 福州大学 | Elevator dragging clutch brake system and method and device based on magneto-rheological effect |
| CN106395672A (en) * | 2016-12-15 | 2017-02-15 | 福州大学 | Magneto-rheological effect-based elevator braking device with automatic protection function and elevator braking method |
| CN107416637A (en) * | 2017-06-16 | 2017-12-01 | 北京建筑大学 | A kind of hoist falling-proof system |
| CN211971429U (en) * | 2018-11-05 | 2020-11-20 | 苏州市职业大学 | Disc type permanent magnet brake for elevator |
Non-Patent Citations (1)
| Title |
|---|
| 付强;杨建军;: "基于磁流变液技术的电梯制动器研究与分析", 山西青年, no. 16, pages 51 * |
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