CN109095379A - Elevator disc permanent-magnet brake - Google Patents
Elevator disc permanent-magnet brake Download PDFInfo
- Publication number
- CN109095379A CN109095379A CN201811308251.0A CN201811308251A CN109095379A CN 109095379 A CN109095379 A CN 109095379A CN 201811308251 A CN201811308251 A CN 201811308251A CN 109095379 A CN109095379 A CN 109095379A
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- CN
- China
- Prior art keywords
- brake
- permanent magnet
- magnetic field
- magnet
- permanent
- 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.)
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Classifications
-
- 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
-
- 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
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of elevator disc permanent-magnet brake, including several mutually independent brake assemblies, and brake assemblies described in every group include the first permanent magnet and electromagnet；It further include the second permanent magnet, second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft, and several brake assemblies scattering devices are at second permanent magnet；First permanent magnet in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet provides the second magnetic field, and each first magnetic field attracts second magnetic field independently to separately 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, the elevator disc 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 disc 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 disc 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 disc permanent-magnet brake, the elevator disc 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 disc permanent-magnet brake, including several mutually independent brake assemblies, brake assemblies described in every group include
First permanent magnet and electromagnet；
It further include the second permanent magnet, second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft, Ruo Gansuo
Brake assemblies scattering device is stated at second permanent magnet；
First permanent magnet in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet provides the second magnetic
, each first magnetic field attracts second magnetic field independently to separately provide and second permanent magnet is made to stop rotating
Brake force；
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.
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 neighboring side of the rotor is fixed with second permanent magnet.
Preferably, several brake assemblies include a fixed frame, and described first in brake assemblies described in every group is forever
Magnet and the electromagnet are 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, second permanent magnet is separated into several, and surround and be distributed in rotor outer periphery edge side.
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.
And rotary shaft of two brake assemblies relative to the machine shaft preferably, including two brake assemblies,
Plane where line is symmetrical arranged.
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 overall structure diagram of the elevator disc permanent-magnet brake of the embodiment of the present invention.
Fig. 2 is A corresponding with Fig. 1 to partial cross-sectional structural diagram.
Fig. 3 is the magnetic field schematic diagram under band-type brake state corresponding with Fig. 1.
Fig. 4 is the magnetic field schematic diagram under the state that declutches corresponding with Fig. 1.
Fig. 5 is the rotor of first embodiment of the invention and the structural schematic diagram of 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.
Fig. 7 is the structural schematic diagram of the first permanent magnet of the embodiment of the present invention.
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.
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 disc permanent-magnet system of one embodiment of the invention
Dynamic device.As shown in phantom in Figure 1, which includes two groups of brake assemblies Q, two groups of brake assemblies Q opposite
In the plane setting symmetrical above and below where the rotation axis of machine shaft 5.
As shown in Fig. 2, every group of brake assemblies Q includes the first permanent magnet 1 and electromagnet 3.Rotor 4 can be directly as
Two permanent magnets 2, i.e., rotor 4 can be in itself is integrated into permanent-magnet material.Combined type can also be used, i.e., as shown in Fig. 2, turning
Son 4 and the second permanent magnet 2 are that combination is formed, and rotor 4 is made of non-permanent-magnet materials, and the second permanent magnet 2, which is fixedly installed in, to be turned
One side of the neighboring of son 4.First permanent magnet 1 and electromagnet 3 are fixed on fixed frame 6, and fixed frame 6 is by ferromagnetic material system
Make, passing through and form magnetic loop in favor of magnetic induction line.
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 provided with two groups of brake assemblies Q, two groups of brake assemblies Q
Between work independently from each other, i.e. every group of brake assemblies Q can independently realize the braking to rotor 4, a brake assemblies Q occur therefore
Barrier will not influence other brake assemblies Q work.
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 3,4, when there is no electric current to pass through in electromagnet 3, the first permanent magnetism
The pole S of body 1 and the pole N 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 5, the second permanent magnet 2 is separated into several mutually independent individuals, and each separation individual can be surround
One side of the neighboring of rotor 4 is uniformly distributed.In addition, as shown in fig. 6, the second permanent magnet 2 in every group of brake assemblies Q
The annulus for being fixed on 4 periphery of rotor of formula can also be integral.First permanent magnet 1 is also configured as the radian with the second permanent magnet 2
To corresponding sector structure, as shown in Figure 7.
Compared with prior art, the brake force of the elevator disc 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 two 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 disc permanent-magnet brake, which is characterized in that including several mutually independent brake assemblies, made described in every group
Dynamic component includes the first permanent magnet and electromagnet；
It further include the second permanent magnet, second permanent magnet is connected firmly with machine shaft, and is rotated with the machine shaft, Ruo Gansuo
Brake assemblies scattering device is stated at second permanent magnet；
First permanent magnet in brake assemblies described in every group is provided which the first magnetic field, and second permanent magnet provides the second magnetic
, each first magnetic field attracts second magnetic field independently to separately provide and second permanent magnet is made to stop rotating
Brake force；
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.
2. elevator disc 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 disc 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 disc 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 disc permanent-magnet brake as described in claim 1, which is characterized in that including be fixed on the machine shaft and
Neighboring side relative to the rotor that the machine shaft radially extends, and the rotor is fixed with second permanent magnetism
Body.
6. elevator disc permanent-magnet brake as described in claim 1, which is characterized in that several brake assemblies include one
Fixed frame, first permanent magnet and the electromagnet in brake assemblies described in every group are both secured to the fixed frame.
7. elevator disc 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 disc permanent-magnet brake as claimed in claim 5, which is characterized in that second permanent magnet is separated into several
It is a, and surround and be distributed in rotor outer periphery edge side.
9. elevator disc 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 is second permanent magnet.
10. elevator disc permanent-magnet brake as described in claim 1, which is characterized in that including two brake assemblies, and two
The brake assemblies are symmetrical arranged relative to the plane where the rotation axis of the machine shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308251.0A CN109095379A (en) | 2018-11-05 | 2018-11-05 | Elevator disc permanent-magnet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308251.0A CN109095379A (en) | 2018-11-05 | 2018-11-05 | Elevator disc permanent-magnet brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109095379A true CN109095379A (en) | 2018-12-28 |
Family
ID=64870009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308251.0A Pending CN109095379A (en) | 2018-11-05 | 2018-11-05 | Elevator disc permanent-magnet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109095379A (en) |
Citations (9)
| 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 |
| 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 |
| CN212076272U (en) * | 2018-11-05 | 2020-12-04 | 苏州市职业大学 | Disc type permanent magnet brake for elevator |
-
2018
- 2018-11-05 CN CN201811308251.0A patent/CN109095379A/en active Pending
Patent Citations (9)
| 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 |
| 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 |
| CN212076272U (en) * | 2018-11-05 | 2020-12-04 | 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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