CN114629326B - Eddy current retarder excited by tooth-shaped coil - Google Patents
Eddy current retarder excited by tooth-shaped coil Download PDFInfo
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- CN114629326B CN114629326B CN202210385973.6A CN202210385973A CN114629326B CN 114629326 B CN114629326 B CN 114629326B CN 202210385973 A CN202210385973 A CN 202210385973A CN 114629326 B CN114629326 B CN 114629326B
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- 230000008859 change Effects 0.000 claims abstract description 14
- 230000004907 flux Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
- H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
- H02K49/046—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with an axial airgap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to an eddy current retarder excited by a tooth-shaped coil, and belongs to the technical field of non-contact auxiliary braking. Compared with the traditional multi-coil excited eddy current retarder, the space of one group of coils is utilized to realize the magnetic flux which can be obtained by two groups of coils of the traditional eddy current retarder, so that more space is saved for the magnetic pole area which can effectively improve the power density; compared with the traditional single-coil transverse magnetic current vortex retarder, the novel vortex retarder has smaller magnetic resistance and larger magnetic flux change rate in the circumferential direction when the radius is smaller. These features facilitate the eddy current retarder to achieve greater power density.
Description
Technical Field
The invention belongs to the technical field of non-contact auxiliary braking, and particularly relates to an eddy current retarder excited by a tooth-shaped coil.
Background
The electric vortex retarder is a non-contact auxiliary braking element, is often used for heavy-duty vehicles, works on long downhill road sections or during non-emergency braking, consumes mechanical energy of the vehicles, reduces the use of a main brake, prolongs the service life of a main braking system, and avoids accidents caused by long-time working and overheat failure of the main brake. The basic working principle of the electric vortex retarder is as follows: the exciting coil or the permanent magnet is excited to generate a magnetic field, the rotor and the stator relatively move, the magnetic field in the conductor is changed in a time domain, the changed magnetic field generates electric eddy current according to the electromagnetic field principle, and the eddy current generated on the conductor excites an induced magnetic field according to the electric eddy current braking principle, so that the original magnetic field inhibits the change of the induced magnetic field and shows braking torque. The kinetic energy of the vehicle is converted into heat energy through the magnetic field, so that the vehicle can play a role in non-contact deceleration braking. The electric vortex retarder has the greatest characteristics of non-contact braking, quick response, good low-speed braking effect, improved automobile braking performance, prevention of rapid consumption of a brake pad and a tire caused by friction in traditional braking, elimination of braking noise, prevention of environmental pollution, and great improvement of safety, comfort and economy of vehicle running.
The existing excitation mode of the eddy current retarder mainly comprises excitation of an excitation coil or a permanent magnet. The eddy current retarder excited by the exciting coil mainly has a multi-coil structure or a single-coil structure. The eddy current retarder with the multi-coil structure is like a product of Telma company, a plurality of groups of coils are distributed in the circumferential direction, magnetic fields with opposite directions are excited between adjacent coils, and an NS alternating magnetic field is formed in the circumferential direction of the rotor. This structure requires space for two coils in the circumferential direction to obtain the magnetic potential excited by one coil, which results in low space utilization. The eddy current retarder structure of the single coil structure is as described in the chinese patent application ZL201310012274.8, and is excited by a single annular coil, and after the coil is energized, an annular magnetic field is generated around the coil. The electric vortex retarder excited by the single coil is utilized, the distribution of magnetic induction density on a conductor generating electric vortex in the circumferential direction is strong and weak alternation and the directions are consistent, and compared with an NS alternating magnetic field formed by multi-coil excitation, the electric vortex retarder has the advantages of small change rate of the magnetic induction density and lower power density. The claw pole single coil excitation eddy current retarder has magnetic poles extending out of the periphery, magnetic poles on two sides alternately distributed in the circumferential direction, and magnetic field with alternating circumferential directions NS is realized through magnetic pole deformation. However, the extended magnetic poles occupy coil space, and the axially extended magnetic poles have complex structures and increased magnetic resistance.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problems that: how to increase the power density of the existing eddy current retarder.
(II) technical scheme
In order to solve the technical problems, the invention provides an eddy current retarder excited by a tooth-shaped coil, which comprises a stator 2, a rotor 1, a tooth-shaped coil 3 and a control system;
the stator 2 consists of a stator inner ring 3-2 and stator magnetic poles 3-1, the stator inner ring 3-2 is of a cylindrical structure, the stator magnetic poles 3-1 are distributed along the circumferential direction on the outer ring of the stator 2, the stator magnetic poles with even numbers in the circumferential direction are axially offset on one side, and the stator magnetic poles with odd numbers are axially offset on the other side;
the tooth-shaped coil 3 is wound into a ring shape along the circumferential direction, axially protrudes at the stator magnetic pole 3-1 to form a tooth shape, and the tooth-shaped coil 3 is arranged on the stator 2 and is positioned between the stator magnetic poles at two sides;
the rotor 1 and the stator 2 are coaxial and can rotate relatively, a certain gap is kept between the rotor 1 and the stator, and the effective working part of the rotor 1 is of a cylindrical structure and can generate electric vortex;
the control system is connected with the tooth-shaped coil 3 through a wire, can control the on-off of the tooth-shaped coil, and can change the magnitude of coil current so as to achieve the purpose of controlling the braking moment of the eddy current retarder.
Preferably, a cooling system is also included for cooling the temperature rising part of the eddy current retarder exciting the tooth coil 3.
Preferably, the stator 2 is made of a magnetic conductive material; the rotor 1 is made of magnetic conductive material; the tooth coil 3 is made of conductive material.
Preferably, the rotor 1 is located in both the outer ring and the inner ring.
Preferably, the stator poles 3-1 are distributed over the stator inner ring 3-2 when the rotor 1 is located in the inner ring.
Preferably, a gap of 0.4-2mm is maintained between the rotor 1 and the stator 2.
Preferably, the cooling system is cooled in an air-cooled or liquid-cooled form.
The invention also provides a working method of the eddy current retarder, when the retarder is applied to a vehicle, the rotor 1 synchronously rotates along with a transmission shaft of the vehicle, the stator 2 is fixed on a vehicle frame, when the retarder works, the control system energizes the tooth-shaped coil 3, an annular magnetic field is generated around the tooth-shaped coil 3 between the stator poles 3-1 at two sides, the magnetic flux phi forms an equivalent closed loop 4 along the stator inner ring 3-2 and the stator outer ring, the rotor 1 and the air gap between the rotor 1 and the stator 2, the magnetic induction intensity is high at the position on the rotor 1 close to the stator pole 3-1, the magnetic induction intensity is weak at the position far away from the stator pole 3-1, the magnetic field of the rotor 1 in the circumferential direction is alternately changed, and the equivalent closed loop 4 comprises rotor magnetic resistance 4.1, first air gap magnetic resistance 4.2, second air gap magnetic resistance 4.5, stator pole N pole magnetic resistance 4.3, stator inner ring magnetic resistance 4.4 and stator pole S pole 4.6. The N pole and the S pole in the stator magnetic pole 3-1 can express that the magnetic induction intensity directions of adjacent stator magnetic poles are different, the directions are all along the radial direction, one is positive, the other is negative, the rotor 1 cuts a magnetic induction line along with the coaxial rotation of the rotor 1 relative to the stator 2, the magnetic induction intensity of a fixed position of the rotor 1 changes along with time, an electric vortex is generated, an induced magnetic field excited by the electric vortex interacts with an original magnetic field, the original magnetic field inhibits the change of the magnetic field on the rotor 1, the magnetic field acts as braking torque, acts on the rotor 1 and is transmitted to a transmission shaft of a vehicle, and non-contact auxiliary braking is carried out, so that the mechanical energy of the vehicle is converted into electric vortex resistance heat.
Preferably, in the working process, the cooling system radiates heat for the heating component of the eddy current retarder.
Preferably, in the working process, the control system can change the current in the tooth-shaped coil 3 to realize continuous adjustment of torque, and when the electric eddy current retarder does not need to be braked, the control system stops supplying power to the tooth-shaped coil 3, and no magnetic field and no braking moment are generated.
(III) beneficial effects
The invention is used as a non-contact auxiliary brake actuating element, creatively adopts tooth-shaped coil excitation and stator magnetic pole design with offset axial two sides, so that only one group of excitation coil space is occupied in the axial and circumferential directions, an NS alternating magnetic field formed by traditional electric slow multi-coil excitation can be realized, more space can be saved, the magnetic pole area is increased, and the power density is increased. Compared with a transverse magnetic electrified vortex retarder excited by a single coil (such as Chinese patent application ZL 201310012274.8), the tooth-shaped coil is used for excitation, magnetic flux forms a closed magnetic circuit between stator magnetic poles adjacent in the circumferential direction, inductance is greatly reduced, current establishment time after the tooth-shaped coil is electrified is shortened, response speed of the retarder is improved, and the retarder has advantages in special industries. Compared with a claw pole single coil eddy current retarder, the magnetic pole structure is simple, the magnetic circuit is shorter, the coil space is larger, the magnetic resistance in the magnetic circuit is reduced, the magnetic potential is increased, and the power density is improved. The control system is used for controlling and adjusting the current of the tooth-shaped coil, so that the control of the braking torque is realized. And (3) air cooling or liquid cooling is carried out on high-temperature parts such as the electric vortex generating part, so that the temperature of the parts is reduced, and the continuous working capacity is improved.
Drawings
FIG. 1 is a schematic view of a partial cross-section of an eddy current retarder structure excited by a tooth coil of the present invention;
FIG. 2 is a schematic diagram of a full cross-section of the tooth coil excited eddy current retarder structure of the present invention;
FIG. 3 is a schematic diagram of the coil structure of the tooth coil excited eddy current retarder of the present invention;
fig. 4 is a stator structure and an equivalent magnetic circuit diagram of the tooth-shaped coil excited eddy current retarder of the invention.
Wherein: a rotor 1, a stator 2 and a tooth-shaped coil 3;
3-1 stator magnetic poles, 3-2 stator inner rings, 4 equivalent closed magnetic circuits, 4.1 rotor magnetic resistance, 4.2 first air gap magnetic resistance, 4.5 second air gap magnetic resistance, 4.3 stator magnetic pole N pole magnetic resistance, 4.4 stator inner ring magnetic resistance and 4.6 stator magnetic pole S pole magnetic resistance.
Detailed Description
For the purposes of clarity, content, and advantages of the present invention, a detailed description of the embodiments of the present invention will be described in detail below with reference to the drawings and examples.
The invention provides an eddy current retarder structure excited by a tooth-shaped coil, which is shown in figure 1, and comprises a stator 2, a rotor 1, a tooth-shaped coil 3, a control system and a cooling system;
the structural shape of the stator 2 is shown in fig. 4. The stator 2 is composed of a stator inner ring 3-2 and stator magnetic poles 3-1, the stator inner ring 3-2 is of a cylindrical structure, the stator magnetic poles 3-1 are distributed on the outer ring of the stator 2 along the circumferential direction, the stator magnetic poles with even numbers in the circumferential direction are axially offset on one side, and the stator magnetic poles with odd numbers in the circumferential direction are axially offset on the other side.
A schematic structural view of the tooth coil 3 is shown in fig. 3. The tooth-shaped coil 3 is wound into a ring shape along the circumferential direction, axially protrudes at the stator magnetic pole 3-1 to form a tooth shape, and the tooth-shaped coil 3 is arranged on the stator 2 and is positioned between the stator magnetic poles at two sides, as shown in fig. 1.
The rotor 1 and the stator 2 are coaxial and can rotate relatively, a gap of 0.4-2mm is kept between the rotor 1 and the stator, and the effective working part of the rotor 1 is of a cylindrical structure and can generate electric vortex.
The control system is connected with the tooth-shaped coil 3 through a wire, can control the on-off of the tooth-shaped coil, and can change the magnitude of coil current so as to achieve the purpose of controlling the braking moment of the eddy current retarder.
The cooling system is used for cooling the high-temperature part of the eddy current retarder excited by the tooth-shaped coil 3, and the form of the cooling system can be air cooling or liquid cooling.
On the material, the stator 2 is a magnetic conduction material, and the higher the magnetic conductivity is, the smaller the coercive force is, the better the coercive force is; the rotor 1 is made of magnetic conductive material; the tooth coil 3 is made of conductive material.
Structurally, the rotor 1 may be located either on the outer ring, as shown in fig. 1, or on the inner ring. When the rotor 1 is positioned on the inner ring, the stator magnetic poles 3-1 are distributed on the stator inner ring 3-2, and the tooth-shaped coil 3 is still arranged between the stator magnetic poles on two sides.
When the retarder is applied to a vehicle, the rotor 1 synchronously rotates along with a transmission shaft of the vehicle, and the stator 2 is fixed on the vehicle frame. When the retarder works, the control system energizes the tooth-shaped coil 3, an annular magnetic field is generated around the tooth-shaped coil 3 between the stator magnetic poles 3-1 at two sides, the magnetic flux phi forms an equivalent closed loop along the stator inner ring 3-2 and the stator magnetic poles 3-1 at two sides adjacent to each other in the circumferential direction of the stator outer ring, the rotor 1 and an air gap between the rotor 1 and the stator 2, the magnetic induction intensity of the rotor 1 at the position close to the stator magnetic pole 3-1 is high, the magnetic induction intensity of the rotor 1 at the position far away from the stator magnetic pole 3-1 is weak, the magnetic field of the rotor 1 in the circumferential direction is alternately changed in NS, and the equivalent closed magnetic circuit 4 is shown in fig. 4. The equivalent closed magnetic circuit 4 comprises a rotor reluctance 4.1, a first air gap reluctance 4.2, a second air gap reluctance 4.5, a stator magnetic pole N pole reluctance 4.3, a stator inner ring reluctance 4.4 and a stator magnetic pole S pole reluctance 4.6. The N pole and the S pole in the stator pole 3-1 can express that the magnetic induction intensity directions of the adjacent stator poles are different, and the directions are all along the radial direction, one is positive, and the other is negative. Along with the coaxial rotation of the rotor 1 relative to the stator 2, the rotor 1 cuts magnetic induction lines, the magnetic induction intensity of the fixed position of the rotor 1 changes along with time to generate electric eddy current, an induced magnetic field excited by the electric eddy current interacts with an original magnetic field, the original magnetic field inhibits the change of the magnetic field on the rotor 1, the magnetic field is expressed as braking torque, acts on the rotor 1 and is transmitted to a transmission shaft of a vehicle to perform non-contact auxiliary braking, the mechanical energy of the vehicle is converted into electric eddy current resistance heat, the temperature rises, and a cooling system dissipates heat for a high-temperature component of the electric eddy current retarder. The control system can change the magnitude of current in the tooth coil 3, so as to realize continuous adjustment of torque. When the electric vortex retarder does not need braking, the control system stops supplying power to the tooth-shaped coil 3, no magnetic field is generated at the moment, and no braking moment is generated in principle.
The power density of the electric vortex retarder is improved, so that the economical efficiency of vehicle running is improved. It can be seen that the tooth-shaped coil excited eddy current retarder provided by the invention. The tooth-shaped coil is utilized for excitation, and an NS alternating magnetic field is obtained in the circumferential direction. Compared with the traditional multi-coil excited eddy current retarder, the space of one group of coils is utilized to realize the magnetic flux which can be obtained by two groups of coils of the traditional eddy current retarder, so that more space is saved for the magnetic pole area which can effectively improve the power density; compared with the traditional single-coil transverse magnetic current vortex retarder, the novel vortex retarder has smaller magnetic resistance and larger magnetic flux change rate in the circumferential direction when the radius is smaller. These features facilitate the eddy current retarder to achieve greater power density.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (10)
1. The electric eddy current retarder excited by the tooth-shaped coil is characterized by comprising a stator (2), a rotor (1), the tooth-shaped coil (3) and a control system;
the stator (2) consists of a stator inner ring (3-2) and stator magnetic poles (3-1), the stator inner ring (3-2) is of a cylindrical structure, the stator magnetic poles (3-1) are distributed on the outer ring of the stator (2) along the circumferential direction, the stator magnetic poles with even serial numbers in the circumferential direction are axially offset on one side, and the stator magnetic poles with odd serial numbers are axially offset on the other side;
the tooth-shaped coil (3) is wound into a ring shape along the circumferential direction, axially protrudes at the stator magnetic pole (3-1) to form a tooth shape, and the tooth-shaped coil (3) is arranged on the stator (2) and is positioned between the stator magnetic poles at two sides;
the rotor (1) and the stator (2) are coaxial and can rotate relatively, a certain gap is kept between the rotor and the stator, and the effective working part of the rotor (1) is of a cylindrical structure and can generate electric vortex;
the control system is connected with the tooth-shaped coil (3) through a wire, can control the on-off of the tooth-shaped coil, and can change the magnitude of coil current so as to achieve the purpose of controlling the braking moment of the eddy current retarder.
2. An eddy current retarder according to claim 1, further comprising a cooling system for cooling the temperature rising part of the eddy current retarder for exciting the tooth coil (3).
3. An eddy current retarder according to claim 2, wherein the stator (2) is of magnetically conductive material; the rotor (1) is made of magnetic conductive material; the tooth-shaped coil (3) is made of conductive material.
4. An eddy current retarder according to claim 2, characterized in that the rotor (1) is located in both the outer ring and the inner ring.
5. An eddy current retarder according to claim 2, characterized in that the stator poles (3-1) are distributed on the stator inner ring (3-2) when the rotor (1) is located in the inner ring.
6. An eddy current retarder according to claim 2, characterised in that a gap of 0.4-2mm is maintained between the rotor (1) and the stator (2).
7. An eddy current retarder according to claim 2, wherein the cooling system is cooled in the form of air cooling or liquid cooling.
8. A method of operating an eddy current retarder according to any one of claims 2 to 7, characterized in that when the retarder is applied to a vehicle, the rotor (1) rotates synchronously with the drive shaft of the vehicle, the stator (2) is fixed to the frame, when the retarder is in operation, the control system energizes the toothed coil (3), an annular magnetic field is generated around the toothed coil (3) between the two side stator poles (3-1), the magnetic flux follows the stator inner ring (3-2), the stator poles (3-1) on the two sides adjacent in the circumferential direction of the stator outer ring, the rotor (1) and the air gap between the rotor (1) and the stator (2), an equivalent closed loop (4) is formed, the magnetic induction intensity on the rotor (1) is high at a position close to the stator poles (3-1), the magnetic induction intensity is weak at a position far from the stator poles (3-1), the magnetic field of the rotor (1) in the circumferential direction changes alternately in NS, and the equivalent closed loop (4) comprises the rotor reluctance (4.1), the first air gap (4.2), the second air gap (4.5), the stator pole (4.3), the stator pole (4.4), and the magnetic pole (4.4) S) and the magnetic pole (4.6); the N pole and the S pole in the stator magnetic poles (3-1) can express that the magnetic induction intensity directions of adjacent stator magnetic poles are different, the directions are all along the radial direction, one is positive, the other is negative, the rotor (1) cuts magnetic induction lines along with the coaxial rotation of the rotor (1) relative to the stator (2), the magnetic induction intensity of a fixed position of the rotor (1) changes along with the time, electric vortex is generated, an induced magnetic field excited by the electric vortex interacts with an original magnetic field, the original magnetic field inhibits the change of the magnetic field on the rotor (1), the change of the magnetic field appears as braking torque, the braking torque acts on the rotor (1) and is transmitted to a transmission shaft of a vehicle, and non-contact auxiliary braking is carried out to convert mechanical energy of the vehicle into electric vortex resistance heat.
9. The method of claim 8, wherein the cooling system dissipates heat from a temperature increasing component of the eddy current retarder during operation.
10. The working method according to claim 8, wherein the control system can change the current in the tooth coil (3) during the working process to realize continuous adjustment of torque, and when the electric eddy current retarder does not need braking, the control system stops supplying power to the tooth coil (3), and no magnetic field and no braking moment are generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210385973.6A CN114629326B (en) | 2022-04-13 | 2022-04-13 | Eddy current retarder excited by tooth-shaped coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210385973.6A CN114629326B (en) | 2022-04-13 | 2022-04-13 | Eddy current retarder excited by tooth-shaped coil |
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| Publication Number | Publication Date |
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| CN114629326A CN114629326A (en) | 2022-06-14 |
| CN114629326B true CN114629326B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210385973.6A Active CN114629326B (en) | 2022-04-13 | 2022-04-13 | Eddy current retarder excited by tooth-shaped coil |
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| CN (1) | CN114629326B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05328706A (en) * | 1992-05-14 | 1993-12-10 | Sawafuji Electric Co Ltd | Eddy-current plate and cooling structure of retarder |
| CN203608064U (en) * | 2013-12-03 | 2014-05-21 | 扬州安行机电科技有限公司 | Middle-mounted doubly salient liquid cooling eddy current retarder |
| CN104578683A (en) * | 2013-10-09 | 2015-04-29 | 泰乐玛汽车制动系统（上海）有限公司 | Eddy current retarder |
| CN105191074A (en) * | 2013-06-05 | 2015-12-23 | 法雷奥电机设备公司 | Electrical machine provided with a damper for mechanically resisting vibratory stresses, and corresponding damper |
| CN105846623A (en) * | 2016-05-15 | 2016-08-10 | 北京工业大学 | Double stator and double wire coil electromagnetic liquid-cooled retarder |
| CN213279452U (en) * | 2020-08-01 | 2021-05-25 | 刘俊琦 | Electromagnetic stepless speed change switchable power distribution device |
| CN114056103A (en) * | 2021-12-23 | 2022-02-18 | 青岛约克运输设备有限公司 | Self-excitation slow braking axle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8646550B2 (en) * | 2012-05-21 | 2014-02-11 | Krassimire Mihaylov Penev | Self rechargeable synergy drive for a motor vehicle |
-
2022
- 2022-04-13 CN CN202210385973.6A patent/CN114629326B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05328706A (en) * | 1992-05-14 | 1993-12-10 | Sawafuji Electric Co Ltd | Eddy-current plate and cooling structure of retarder |
| CN105191074A (en) * | 2013-06-05 | 2015-12-23 | 法雷奥电机设备公司 | Electrical machine provided with a damper for mechanically resisting vibratory stresses, and corresponding damper |
| CN104578683A (en) * | 2013-10-09 | 2015-04-29 | 泰乐玛汽车制动系统（上海）有限公司 | Eddy current retarder |
| CN203608064U (en) * | 2013-12-03 | 2014-05-21 | 扬州安行机电科技有限公司 | Middle-mounted doubly salient liquid cooling eddy current retarder |
| CN105846623A (en) * | 2016-05-15 | 2016-08-10 | 北京工业大学 | Double stator and double wire coil electromagnetic liquid-cooled retarder |
| CN213279452U (en) * | 2020-08-01 | 2021-05-25 | 刘俊琦 | Electromagnetic stepless speed change switchable power distribution device |
| CN114056103A (en) * | 2021-12-23 | 2022-02-18 | 青岛约克运输设备有限公司 | Self-excitation slow braking axle |
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| CN114629326A (en) | 2022-06-14 |
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