CN109205497A - Elevator drum-type permanent magnet brake - Google Patents
Elevator drum-type permanent magnet brake Download PDFInfo
- Publication number
- CN109205497A CN109205497A CN201811309041.3A CN201811309041A CN109205497A CN 109205497 A CN109205497 A CN 109205497A CN 201811309041 A CN201811309041 A CN 201811309041A CN 109205497 A CN109205497 A CN 109205497A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- brake
- magnetic field
- elevator drum
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 83
- 230000000712 assembly Effects 0.000 claims abstract description 27
- 238000000429 assembly Methods 0.000 claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 230000001902 propagating effect Effects 0.000 claims 1
- 238000010338 mechanical breakdown Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of elevator drum-type permanent magnet brake, including two groups of mutually independent brake assemblies, 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, the elevator drum-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 drum-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 drum-type permanent magnet brake, the elevator drum-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 drum-type permanent magnet brake, which is characterized in that including two groups of mutually independent brake assemblies, braked described in every group
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.
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 two sides at the edge of the rotor are respectively fixed with second permanent magnet.
Preferably, including the fixed frame around the rotor, and first permanent 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 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, two second permanent magnet polarities in brake assemblies described in two groups are arranged in the same direction, i.e., described in adjacent two
The N(or S of second permanent magnet) extremely correspond to N(or S) pole.
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 two groups of phases
Mutual independent brake assemblies, if one group of failure, the still achievable braking of another set enhances safety and stability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the elevator drum-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 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 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 and Fig. 5.A kind of elevator drum-type permanent magnet braking of one embodiment of the invention
Device, as shown in Figure 1, including two groups of brake assemblies, every group of brake assemblies include the first permanent magnet 1, the second permanent magnet 2 and electromagnetism
Body 3.Two groups of brake assemblies work independently from each other, i.e. every group of brake assemblies can independently realize the braking to rotor 4, one group of appearance
Failure will not influence another set 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 second permanent magnet 2 are that combination is formed, rotor 4 is made of non-permanent-magnet materials, second
Permanent magnet 2 is fixedly installed in the two sides at the edge of rotor 4.First permanent magnet 1 and electromagnet 3 are fixed on fixed frame 6, fixed frame
6 are made by ferromagnetic material, passing through and form magnetic loop in favor of magnetic induction line.
In every group of brake assemblies, the polarity of the first permanent magnet 1 and the second permanent magnet 2 is oppositely arranged, i.e. the first permanent magnet 1
Extremely corresponding second permanent magnet 2 of N the pole S or the first permanent magnet 1 extremely corresponding second permanent magnet 2 of S the pole N, effect is
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, the
Two permanent magnets 2 can produce the second magnetic field, play the role of braking by the magnetic force attraction between first time magnetic field and the second magnetic field.
In every group of brake assemblies, 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.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 is separated into several mutually independent individuals,
And each separation individual can the two sides at edge of surrounding rotor 4 be uniformly distributed.At this point, the arrangement shape with above-mentioned second permanent magnet 2
Formula is corresponding, and the first permanent magnet 1 in every group of brake assemblies is also separated into several and is uniformly surrounded on the only of 4 periphery of rotor
Vertical individual, 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 can also be integral formula around being fixed on
The annulus in 4 both sides of edges face of rotor, at this point, first permanent magnet 1 corresponding with the second permanent magnet 2 can also be integral surrounding for formula
In the annulus of rotor 4.
Compared with prior art, the brake force of the elevator drum-type permanent magnet brake is by the first permanent magnetism in every group of brake assemblies
Attraction between body 1 and the second permanent magnet 2 provides, and since permanent magnet can provide stable magnetic force, avoids spring failure
Problem, and there is no the substances of similar brake shoe to contact, and also not will cause abrasion.In addition, declutching and only existing magnetic during band-type brake
The variation of field is not in mechanical jamming failure there is no the mechanical action in conventional brake, and reaction speed is faster.Together
When, by the size and Orientation of electric current in control electromagnet 3, the size of brake force can be realized and be precisely controlled, enhance brake
Adapt to the ability of elevator difference operating condition.In addition, due to using two groups of mutually independent brake assemblies, if one group of failure,
The still achievable braking of another set enhances 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 drum-type permanent magnet brake, which is characterized in that including two groups of mutually independent brake assemblies, 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.
2. elevator drum-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 drum-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 drum-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 drum-type permanent magnet brake as described in claim 1, which is characterized in that including be fixed on the machine shaft and
Two sides relative to the rotor that the machine shaft radially extends, and the edge of the rotor are respectively fixed with described second
Permanent magnet.
6. elevator drum-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 both secured to the fixed frame.
7. elevator drum-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 drum-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 drum-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 drum-type permanent magnet brake as claimed in claim 5, which is characterized in that two in brake assemblies described in two groups
Second permanent magnet polarity is arranged in the same direction, i.e., the N(or S of adjacent two second permanent magnet) extremely correspond to N(or S) pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309041.3A CN109205497A (en) | 2018-11-05 | 2018-11-05 | Elevator drum-type permanent magnet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309041.3A CN109205497A (en) | 2018-11-05 | 2018-11-05 | Elevator drum-type permanent magnet brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109205497A true CN109205497A (en) | 2019-01-15 |
Family
ID=64995103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811309041.3A Pending CN109205497A (en) | 2018-11-05 | 2018-11-05 | Elevator drum-type permanent magnet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109205497A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0456017A2 (en) * | 1990-04-28 | 1991-11-13 | Isuzu Motors Limited | Eddy current type retarder |
| CN1350308A (en) * | 2000-10-19 | 2002-05-22 | 五十铃自动车株式会社 | Compound magnet of electromagnet and permanent magnet |
| 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 |
| 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 |
| CN211871253U (en) * | 2018-11-05 | 2020-11-06 | 苏州市职业大学 | Drum-type permanent-magnet brake for elevator |
-
2018
- 2018-11-05 CN CN201811309041.3A patent/CN109205497A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0456017A2 (en) * | 1990-04-28 | 1991-11-13 | Isuzu Motors Limited | Eddy current type retarder |
| CN1350308A (en) * | 2000-10-19 | 2002-05-22 | 五十铃自动车株式会社 | Compound magnet of electromagnet and permanent magnet |
| 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 |
| 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 |
| CN211871253U (en) * | 2018-11-05 | 2020-11-06 | 苏州市职业大学 | Drum-type permanent-magnet brake for elevator |
Non-Patent Citations (1)
| Title |
|---|
| 李仲兴, 周孔亢, 许海春, 张赫: "车辆电磁制动器电磁体磁场分析", 机械工程学报, no. 11, pages 207 - 210 * |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |