CN111981061B - Electromagnetic power-off brake with high braking torque - Google Patents
Electromagnetic power-off brake with high braking torque Download PDFInfo
- Publication number
- CN111981061B CN111981061B CN202010854770.8A CN202010854770A CN111981061B CN 111981061 B CN111981061 B CN 111981061B CN 202010854770 A CN202010854770 A CN 202010854770A CN 111981061 B CN111981061 B CN 111981061B
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- brake
- iron core
- armature
- cover plate
- hole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to an electromagnetic power-off brake with high braking torque. The magnetic suspension coil comprises an iron core, an armature, a coil winding arranged in the iron core and a plurality of compression springs with one ends embedded in the iron core, wherein the magnetic suspension coil comprises a cover plate, the cover plate and the iron core are mutually fixed, and the cover plate and the iron core are supported by a plurality of equal-height columns; the armature is arranged between the iron core and the cover plate, the armature is provided with a through hole matched with the outer diameter of the equal-height column and is connected between the iron core and the cover plate in a sliding manner, and the other ends of the compression springs are abutted against one end face of the armature; and the brake disc is arranged between the armature and the cover plate, the brake disc is provided with a large central through hole, the equal-height columns are positioned in the large central through hole, the brake disc can rotate at the peripheries of the equal-height columns, the periphery of the large central through hole forms a circular ring part, and friction plates which can be matched with each other are respectively arranged between one end surface of the circular ring part and the armature and between the other end surface of the circular ring part and the cover plate.
Description
Technical Field
The invention relates to an electromagnetic power-off brake with high braking torque.
Background
The working principle of the electromagnetic power-off brake is that when the electromagnetic power-off brake is electrified, the coil winding is electrified to generate magnetic force, so that the armature is sucked back by overcoming the acting force of the spring, and the brake disc can freely rotate at the moment; when the coil winding loses power, the magnetic force of the coil winding disappears, the armature is pushed to the brake disc by the spring, and friction force is generated between the brake disc and the armature through the friction plate to prevent the brake disc from rotating so as to play a braking role.
The existing electromagnetic brake is mainly characterized in that a brake disc is arranged in a range enclosed by contour columns, a friction plate is located at a position close to a central shaft of the electromagnetic brake, large friction torque is difficult to obtain, the braking performance of the electromagnetic power-off brake is poor, and the response speed is low. The large friction torque is usually obtained by increasing the overall size of the electromagnetic power-off brake, which results in large volume and weight of the electromagnetic power-off brake and high manufacturing cost.
Disclosure of Invention
The invention aims to provide an electromagnetic power-off brake with high braking torque, good braking performance, high response speed, small volume and weight and low manufacturing cost.
In order to achieve the purpose, the invention adopts the following technical scheme: an electromagnetic power-off brake with high braking torque comprises an iron core, an armature, a coil winding arranged in the iron core and a plurality of compression springs with one ends embedded in the iron core,
the cover plate and the iron core are fixed with each other, and the cover plate and the iron core are supported by a plurality of equal-height columns;
the armature is arranged between the iron core and the cover plate, the armature is provided with a through hole matched with the outer diameter of the equal-height column and is connected between the iron core and the cover plate in a sliding manner, and the other ends of the compression springs are abutted against one end face of the armature;
and the brake disc is arranged between the armature and the cover plate, the brake disc is provided with a large central through hole, the equal-height columns are positioned in the large central through hole, the brake disc can rotate at the peripheries of the equal-height columns, the periphery of the large central through hole forms a circular ring part, and friction plates which can be matched with each other are respectively arranged between one end surface of the circular ring part and the armature and between the other end surface of the circular ring part and the cover plate.
The brake disc is in a hollow structure through the arrangement of the large central hole, the hollow brake disc can freely rotate on the outer sides of the equal-height columns without interference, and only when the iron core is powered off, the compression spring pushes the iron runner to enable the armature, the brake disc and the cover plate to be close together, so that the friction plate between the armature and the brake disc and the friction plate between the brake disc and the cover plate are pressed, the rotation of the brake disc is limited, and the braking of a rotor of a motor connected with the brake disc can be realized. The invention is particularly suitable for braking of an outer rotor motor. The friction plate is far away from the central shaft of the electromagnetic power-off brake, and the brake with the same outer diameter can obtain larger braking torque, so that better braking performance and response performance are provided, and the electromagnetic power-off brake is miniaturized and lightened.
Preferably, the brake disc is provided with a friction plate hole for the friction plate to penetrate through, the thickness of the brake disc is smaller than that of the friction plate, the friction plate is loosely arranged in the friction plate hole, and the upper end surface and the lower end surface of the friction plate, which have a friction effect, protrude out of the two end surfaces of the brake disc respectively. The friction plate is loosely matched in a friction plate hole of the brake disc, the friction plate can slide in the friction plate hole in a small range, when the armature, the brake disc and the cover plate are tightly pressed, the friction plate can always keep parallel contact with the cover plate and the armature, and enough friction force is provided to guarantee the braking performance of electromagnetic power-off braking, so that the problem that the friction plate, the armature and the cover plate cannot be in parallel contact due to the fact that the brake disc is not parallel to the armature and the cover plate due to the fact that the rotor brake disc mounting portion is not parallel to each other when the brake disc and the rotor are assembled is solved. The thickness of the brake disc is smaller than that of the friction plate, so that the brake disc is reliably ensured not to rub with the diffraction iron and the cover plate.
Preferably, the friction plate is in a circular arc-shaped strip structure, and the friction plate hole is in a circular arc-shaped strip structure loosely matched with the friction plate. The arc-shaped friction plate with the strip-shaped structure and the friction plate hole can ensure that the friction force is along the circumferential direction, so that the direction of the friction force is perpendicular to the radius, namely the force arm, and the maximum braking moment is obtained.
Preferably, the core center is formed with a mounting hole for mounting and fixing, and the mounting hole has a key groove. The installation hole at the center of the iron core is matched with the key groove and can be matched with an inner stator shaft of an outer rotor motor, so that the installation and the fixation of the motor are realized.
Preferably, the outer edge of the brake disc extends outwards to form a horn, and the end part of the horn forms a connecting disc for mounting the brake disc; the horn body is provided with a plurality of hollow holes which are uniformly distributed in the circumferential direction. The horn body axially extends the mounting position of the brake disc, so that the horn body is conveniently connected with a motor rotor, and the universality is improved; the hollow holes in the horn body can reduce the whole weight of the invention, thereby reducing the rotational inertia and improving the braking performance.
Preferably, both ends of the iron core are provided with threading holes for the lead wires of the coil winding to pass through, and the armature and the cover plate are provided with through holes corresponding to the threading holes of the iron core for the lead wires to pass through, so that the wire can be connected and installed through any one of the two ends, and the installation and the fixation of the invention are facilitated.
Preferably, the armature is provided with a first through hole coaxial with the iron core, and the cover plate is provided with a second through hole coaxial with the iron core, so that the fixed shaft can penetrate through the cover plate conveniently during installation.
Preferably, the iron core is provided with an annular groove for accommodating the coil winding, so that the arrangement and the positioning of the coil winding are facilitated, and the structure of the invention is more compact.
Preferably, the iron core is provided with a spring groove for accommodating the compression spring, so that good positioning and supporting of the compression spring are achieved.
Preferably, the iron core and the cover plate are fixed through screws, and the screws penetrate through the equal-height columns from the cover plate and then are in threaded fit with the iron core, so that the relative position between the iron core and the cover plate and the stability of the equal-height columns are guaranteed, and the flexibility of armature sliding is guaranteed.
The invention has the advantages of better braking performance, higher response speed, smaller volume and weight, lower manufacturing cost and the like.
Drawings
FIG. 1 is a schematic illustration of an exploded structure of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
fig. 5 is a sectional view B-B of fig. 4.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in fig. 1, 2, 3, 4 and 5, an iron core 1 is provided with an annular groove 3 for accommodating a coil winding 2, the iron core 1 is provided with a plurality of spring grooves 5 for accommodating compression springs 4, the coil winding 2 is arranged in the annular groove 3, one end of each compression spring 4 is embedded in the spring groove 5 of the iron core, a cover plate 6 is fixed with the iron core 1, the cover plate 6 and the iron core 1 are supported by three equal-height columns 7, the iron core 1 and the cover plate 6 are fixed by screws 8, and the screws 8 are in threaded fit with the iron core 1 after penetrating through the equal-height columns 7 from the cover plate 6.
The armature 9 is arranged between the iron core 1 and the cover plate 6, the armature 9 is provided with a through hole 10 matched with the outer diameter of the equal-height column 7 and is connected between the iron core 1 and the cover plate 6 in a sliding way, and the other end of the compression spring 4 is propped against one end face of the armature 9; the brake disc 11 is arranged between the armature 9 and the cover plate 6, the brake disc 11 is provided with a large central through hole 12, the three equal-height columns 7 are positioned in the large central through hole 12, the brake disc 11 can rotate around the equal-height columns 7, a circular ring part 13 is formed on the periphery of the large central through hole 12, a friction plate hole 23 for a friction plate to penetrate through is formed in the circular ring part 13 of the brake disc 11, the thickness of the brake disc 11 is smaller than that of the friction plate 14, the friction plate 14 is loosely arranged in the friction plate hole 23, and the upper end surface and the lower end surface of the friction plate, which play a friction role, respectively protrude out of the two end surfaces of the brake disc 11. The friction plate 14 is in a circular arc-shaped strip structure, and the friction plate hole 23 is in a circular arc-shaped strip structure loosely matched with the friction plate.
The outer edge of the brake disc 11 extends outwards to form a horn 17, the end of the horn 17 forms a connecting disc 18 for installing the brake disc, and the horn 17 is provided with a plurality of hollow holes 19 which are uniformly arranged in the circumferential direction.
The center of the iron core 1 is provided with a mounting hole 15 for mounting and fixing, the mounting hole 15 is provided with a key slot 16, both ends of the iron core 1 are provided with threading holes 20 for leading wires of the coil winding to pass through, the armature 9 is provided with a first through hole 21 coaxial with the iron core, and the cover plate 6 is provided with a second through hole 22 coaxial with the iron core 1.
The arrangement of the large central hole enables the brake disc to be of a hollow structure, the hollow brake disc can freely rotate outside the equal-height columns without interference, and only when the iron core is powered off, the compression spring pushes the iron runner to enable the armature, the brake disc and the cover plate to be close together, so that a friction plate between the armature and the brake disc and a friction plate between the brake disc and the cover plate are pressed, the rotation of the brake disc is limited, and the braking of a rotor of a motor connected with the brake disc can be realized. The invention is particularly suitable for braking an outer rotor motor, and when the invention is applied, the brake disc can be in transmission connection with the outer rotor of the outer rotor motor through the connecting disc 18 of the horn body, and the rotor core is fixed with the inner stator shaft of the outer rotor motor. The friction plate is far away from the central shaft of the electromagnetic power-off brake, and the brake with the same outer diameter can obtain larger braking torque, so that better braking performance and response performance are provided, and the electromagnetic power-off brake is miniaturized and lightened.
Claims (10)
1. The utility model provides a high braking moment's electromagnetism loses electric brake, includes iron core, armature, locates coil winding and one end and inlay in a plurality of compression spring in the iron core that the iron core is interior, its characterized in that:
comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the cover plate and the iron core are fixed with each other, and the cover plate and the iron core are supported by a plurality of equal-height columns;
the armature is arranged between the iron core and the cover plate, the armature is provided with a through hole matched with the outer diameter of the equal-height column and is connected between the iron core and the cover plate in a sliding manner, and the other ends of the compression springs are abutted against one end face of the armature;
a brake disk between the armature and the cover plate, the brake disk having a large central through hole,
the plurality of equal-height columns are positioned in the large central through hole, the brake disc can rotate around the equal-height columns, a circular ring part is formed around the large central through hole, and friction plates which can be matched with each other are respectively arranged between one end face of the circular ring part and the armature as well as between the other end face of the circular ring part and the cover plate.
2. An electromagnetic power-off brake with high braking torque as claimed in claim 1, characterized in that the brake disc is provided with friction plate holes for friction plates to penetrate through, the thickness of the brake disc is smaller than that of the friction plates, the friction plates are loosely fitted in the friction plate holes, and the upper and lower end surfaces of the friction plates, which have a friction function, protrude out of the two end surfaces of the brake disc respectively.
3. An electromagnetic power-off brake with high braking torque as claimed in claim 2, characterized in that the friction plate is in a circular arc-shaped strip structure, and the friction plate hole is in a circular arc-shaped strip structure loosely matched with the friction plate.
4. A high braking torque electromagnetic power-off brake as defined in claim 1 or 2, wherein said core is centrally formed with a mounting hole for mounting and fixing, said mounting hole having a key groove.
5. A high braking torque electromagnetic power-off brake as defined in claim 1 or 2, wherein the outer edge of said brake disc is extended outward to form a horn, and the end of said horn forms a connection pad for mounting the brake disc.
6. The electromagnetic power-off brake with high braking torque as claimed in claim 5, wherein the horn body is provided with a plurality of circumferentially and uniformly arranged hollow holes.
7. The electromagnetic power-off brake with high braking torque as claimed in claim 1 or 2, wherein the two ends of the iron core are provided with threading holes for the lead wires of the coil winding to pass through, and the armature and the cover plate are provided with through holes corresponding to the threading holes of the iron core for the lead wires to pass through.
8. A high braking torque electromagnetic power-off brake as claimed in claim 1 or 2, wherein said armature is provided with a first through hole coaxial with the core, and said cover plate is provided with a second through hole coaxial with the core.
9. A high braking torque electromagnetic power-off brake as claimed in claim 1 or 2, wherein said iron core is provided with an annular groove for receiving a coil winding.
10. A high braking torque electromagnetic power-off brake as claimed in claim 1 or 2, characterized in that the core is provided with spring grooves for accommodating compression springs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854770.8A CN111981061B (en) | 2020-08-24 | 2020-08-24 | Electromagnetic power-off brake with high braking torque |
| PCT/CN2021/114044 WO2022042474A1 (en) | 2020-08-24 | 2021-08-23 | Electromagnetic power-off brake having high braking torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854770.8A CN111981061B (en) | 2020-08-24 | 2020-08-24 | Electromagnetic power-off brake with high braking torque |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111981061A CN111981061A (en) | 2020-11-24 |
| CN111981061B true CN111981061B (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010854770.8A Active CN111981061B (en) | 2020-08-24 | 2020-08-24 | Electromagnetic power-off brake with high braking torque |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111981061B (en) |
| WO (1) | WO2022042474A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981061B (en) * | 2020-08-24 | 2021-12-21 | 浙江英洛华赫兹电气有限公司 | Electromagnetic power-off brake with high braking torque |
| CN115419661B (en) * | 2022-08-30 | 2024-06-14 | 中国科学院国家天文台南京天文光学技术研究所 | Low-heating power-off brake |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207437628U (en) * | 2017-11-30 | 2018-06-01 | 刘德才 | A kind of double friction disc brake devices |
| CN110617281A (en) * | 2019-10-18 | 2019-12-27 | 台州赫兹电气有限公司 | Electromagnetic power-off brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB593333A (en) * | 1945-06-14 | 1947-10-14 | Prec Developments Co Ltd | Improvements in magnetic brakes |
| GB151478A (en) * | 1919-10-04 | 1920-09-30 | Malcolm Walker | Improvements in magnetically-operated friction clutches |
| GB1295000A (en) * | 1969-04-21 | 1972-11-01 | ||
| DE3322495C2 (en) * | 1983-06-22 | 1986-10-02 | Institutul de Cercetare Stiintifica si Inginerie Tehnologica pentru Industria Electrotehnica, Bukarest/Bucuresti | Electromagnetic safety brake for electric motors |
| JP5113053B2 (en) * | 2005-07-29 | 2013-01-09 | ホートン， インコーポレイテッド | Viscous clutch with improved flux circuit |
| JP2010106981A (en) * | 2008-10-30 | 2010-05-13 | Tsubaki Emerson Co | Motor with magnetic excitation-free brake having hand brake releasing mechnism |
| CN201627842U (en) * | 2010-01-20 | 2010-11-10 | 绵阳市利通印刷机械制造有限公司 | Special electromagnetic clutch device for paper cutting machine |
| JP5374744B1 (en) * | 2012-06-29 | 2013-12-25 | 多摩川精機株式会社 | Brake structure for electric motor and brake operating method thereof |
| JP5722363B2 (en) * | 2013-02-07 | 2015-05-20 | ファナック株式会社 | Electromagnetic brake, electric motor and machine having shaft fall prevention function |
| CN104728394A (en) * | 2013-12-19 | 2015-06-24 | 博格华纳公司 | Metal pulley with nonmagnetic insert |
| JP6391141B2 (en) * | 2014-01-31 | 2018-09-19 | 臼井国際産業株式会社 | Externally controlled fan / clutch device |
| CN104118787B (en) * | 2014-07-01 | 2016-04-20 | 常熟市佳能电梯配件有限公司 | Two traction cylinder drives permanent magnetic synchronous traction machine by force |
| CN204419939U (en) * | 2014-12-22 | 2015-06-24 | 天津永恒泰科技有限公司 | A kind of convergent magnetic field type permanent magnetism safety brake |
| CN111981061B (en) * | 2020-08-24 | 2021-12-21 | 浙江英洛华赫兹电气有限公司 | Electromagnetic power-off brake with high braking torque |
-
2020
- 2020-08-24 CN CN202010854770.8A patent/CN111981061B/en active Active
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2021
- 2021-08-23 WO PCT/CN2021/114044 patent/WO2022042474A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207437628U (en) * | 2017-11-30 | 2018-06-01 | 刘德才 | A kind of double friction disc brake devices |
| CN110617281A (en) * | 2019-10-18 | 2019-12-27 | 台州赫兹电气有限公司 | Electromagnetic power-off brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111981061A (en) | 2020-11-24 |
| WO2022042474A1 (en) | 2022-03-03 |
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