CN113027952B - Magnetic braking mechanism - Google Patents

Magnetic braking mechanism Download PDF

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Publication number
CN113027952B
CN113027952B CN202110213409.1A CN202110213409A CN113027952B CN 113027952 B CN113027952 B CN 113027952B CN 202110213409 A CN202110213409 A CN 202110213409A CN 113027952 B CN113027952 B CN 113027952B
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China
Prior art keywords
main shaft
magnetic
fixedly provided
transmission main
heat
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CN202110213409.1A
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Chinese (zh)
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CN113027952A (en
Inventor
张中涛
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Dongying Baofeng Auto Parts Co ltd
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Dongying Baofeng Auto Parts Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D65/12Discs; Drums for disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/02Braking members; Mounting thereof
    • F16D65/12Discs; Drums for disc brakes
    • F16D65/128Discs; Drums for disc brakes characterised by means for cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/38Slack adjusters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D65/84Features relating to cooling for disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/78Features relating to cooling
    • F16D2065/785Heat insulation or reflection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/18Electric or magnetic
    • F16D2121/20Electric 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 the technical field of shaft type braking equipment, and discloses a magnetic type braking mechanism which comprises a transmission main shaft, wherein two sides of the outer surface of the transmission main shaft are respectively provided with a group of permanent magnetic clamping sleeves, one side of the outer part of each permanent magnetic clamping sleeve is fixedly provided with a heat insulation sheet, the other side of each heat insulation sheet is fixedly provided with a friction sheet, the outer parts of two ends of the transmission main shaft are respectively provided with a group of heat sensing mechanisms, the outer surface of each heat sensing mechanism is fixedly provided with a fixed support, the inner side of each fixed support is fixedly provided with a brake disc, and a plurality of groups of fixed connecting rods are fixedly arranged in the two groups of fixed supports. This magnetic-type brake mechanism cooperates the setting of feedback current system between electromagnetic means and the heat sensing mechanism simultaneously through two sets of heat shields and brake disc, can prevent effectively that a certain set of heat shield and brake disc from the phenomenon that the high temperature appears the heat decline under long-time braking operation, and then has improved the security and the reliability of this brake mechanism in the use.

Description

Magnetic braking mechanism
Technical Field
The invention relates to the technical field of shaft braking equipment, in particular to a magnetic braking mechanism.
Background
At present, most of existing brake mechanisms utilize mutual extrusion between a friction plate and a brake disc to generate strong frictional resistance and generate corresponding braking force to force a main shaft or a corresponding rotating mechanism to decelerate or stop, the magnitude of the braking force mainly depends on the magnitude of friction pressure, the larger the friction pressure is, the larger the braking force is, however, when the friction pressure is utilized to realize braking, a large amount of generated heat energy cannot be rapidly dissipated under a long-time high load or a continuous braking working state, so that the temperature of the friction plate and the brake disc is rapidly increased, the friction coefficient is reduced due to high temperature, and a heat fading phenomenon occurs, so that the braking performance of the brake mechanism is rapidly weakened, and even a major safety accident of brake failure occurs.
Therefore, a braking mechanism is needed to effectively avoid the situation that the braking performance of the conventional braking mechanism is reduced due to heat fading caused by low heat dissipation efficiency.
Disclosure of Invention
Technical problem to be solved
The invention provides a magnetic braking mechanism, which has the advantages of rapid conversion of friction plates and no heat fading in the continuous braking process, and solves the problems that when the braking is realized by using friction pressure, a large amount of generated heat energy cannot be rapidly dissipated under a long-time high load or a continuous braking working state, so that the temperature of the friction plates and a brake disc is rapidly increased, the friction coefficient is reduced due to high temperature, the heat fading phenomenon occurs, and finally the braking performance of the braking mechanism is rapidly weakened, even the major safety accident of braking failure occurs.
(II) technical scheme
The invention provides the following technical scheme: the utility model provides a magnetic braking mechanism, includes the transmission main shaft, the both sides of transmission main shaft surface are equipped with a set of permanent magnetism cutting ferrule respectively, the outside one side fixed mounting of permanent magnetism cutting ferrule has the heat insulating sheet, and the opposite side fixed mounting of heat insulating sheet has the friction disc, the outside at transmission main shaft both ends is equipped with a set of heat sensing mechanism respectively, heat sensing mechanism's fixed surface installs the fixed bolster, the inboard fixed mounting of fixed bolster has the brake disc, and is two sets of the inside fixed mounting of fixed bolster has a plurality of groups of fixed connecting rods, the middle part of fixed connecting rod surface just is located the outlying middle part fixed mounting of two sets of permanent magnetism cutting ferrules has electromagnetic means, the fixed stop collar that has cup jointed in middle part of transmission main shaft surface, and stop collar's both ends respectively with the inboard of a set of permanent magnetism cutting ferrule to the contact.
Preferably, the inner sides of the permanent magnet cutting sleeves are arranged to be in a conical structure, and the magnetism of one side of the conical structure on the two groups of permanent magnet cutting sleeves is attracted.
Preferably, the electromagnetic device is provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve in the corresponding direction.
Preferably, an electric feedback connection system is formed between the inside of the heat sensing mechanism and the inside of the electromagnetic device, and a temperature feedback conversion threshold value is arranged inside the electromagnetic device.
Preferably, a friction wear control system is arranged inside the electromagnetic device and used for adjusting the basic current of the braking mechanism during starting according to the braking pressure of the friction plate and the braking duration.
(III) advantageous effects
The invention has the following beneficial effects:
1. this magnetic force formula brake mechanism, cooperate the setting of feedback current system between electromagnetic means and the heat sensing mechanism simultaneously through two sets of heat shields and brake disc, so as to start a certain set of friction disc and brake disc alone, and when the temperature of this set of friction disc and brake disc was too high, can be timely convert to another set of friction disc and brake disc and realize the braking operation to the transmission main shaft, compare with current brake mechanism, can effectively prevent that the phenomenon that the temperature is too high and the heat decline appears under long-time braking operation of a certain set of friction disc and brake disc, and then improved the security and the reliability of this brake mechanism in the use.
2. This magnetic-type brake mechanism to the setting of electromagnetic means inside friction and wear control system to the operating duration and the pressure size of two sets of permanent magnetism cutting ferrule of even distribution make the wearing and tearing state of two sets of permanent magnetism cutting ferrules close, and can not cause the excessive wearing and tearing of a certain set of permanent magnetism cutting ferrule, and the phenomenon that another group permanent magnetism cutting ferrule is unworn, and then improved effectively and all can provide good braking efficiency when the operating state of conversion permanent magnetism cutting ferrule.
3. The magnetic braking mechanism can effectively adjust the size of the gap between the two groups of permanent magnet clamping sleeves and the two corresponding groups of brake discs when the braking mechanism is in an initial state by setting a friction and wear control system in the electromagnetic device, so that the braking mechanism is ensured to have good braking efficiency when being started, and the phenomenon that the braking performance is reduced due to the change of the gap between the heat insulation sheet and the brake disc caused by normal wear of the heat insulation sheet can not occur.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of the present invention;
fig. 3 is a schematic view of the mounting structure of the electromagnetic device of the present invention.
In the figure: 1. a transmission main shaft; 2. a permanent magnet card sleeve; 3. a heat insulating sheet; 4. a friction plate; 5. a heat sensing mechanism; 6. a fixed bracket; 7. a brake disc; 8. fixing the connecting rod; 9. an electromagnetic device; 10. and a limiting sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a magnetic brake mechanism includes a transmission spindle 1, a set of permanent magnetic cutting sleeves 2 are respectively disposed on two sides of the outer surface of the transmission spindle 1, a heat insulation sheet 3 is fixedly mounted on one side of the outer portion of the permanent magnetic cutting sleeve 2, and the other side of the heat insulating sheet 3 is fixedly provided with a friction sheet 4, the outer parts of the two ends of the transmission main shaft 1 are respectively provided with a group of heat sensing mechanisms 5, the outer surface of each heat sensing mechanism 5 is fixedly provided with a fixed support 6, the inner side of each fixed support 6 is fixedly provided with a brake disc 7, the inner parts of the two groups of fixed supports 6 are fixedly provided with a plurality of groups of fixed connecting rods 8, the middle parts of the outer surfaces of the fixed connecting rods 8, which are positioned at the periphery of the two groups of permanent magnet clamping sleeves 2, are fixedly provided with electromagnetic devices 9, the middle part of the outer surface of the transmission main shaft 1 is fixedly sleeved with a limiting sleeve 10, and the two ends of the limiting sleeve 10 are respectively contacted with the inner sides of the group of permanent magnet clamping sleeves 2.
The two sets of friction plates 4 and brake discs 7 are arranged so as to separately start one set of friction plate 4 and brake disc 7, and when the temperatures of the friction plate 4 and the brake disc 7 are too high, the other set of friction plate 4 and brake disc 7 are timely switched to realize braking action, so that the phenomenon of heat fading caused by too high temperatures of the one set of friction plate 4 and brake disc 7 during long-time braking operation is effectively prevented.
In the technical scheme, the inner sides of the permanent magnet cutting sleeves 2 are arranged to be in a conical structure, and the magnetism of one side of the conical structure on the two groups of permanent magnet cutting sleeves 2 is attracted.
The two groups of permanent magnetic cutting sleeves 2 are arranged in a magnetic attraction manner, so that the braking mechanisms can be mutually attracted without frictional contact between the braking discs 7 on the corresponding sides in the initial state, the power loss of the braking mechanisms on the transmission main shaft 1 in the non-working state is effectively reduced, and meanwhile, the problem of ineffective abrasion of the friction plates 4 or the braking discs 7 is avoided.
In the technical scheme, the electromagnetic device 9 is respectively provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve 2 in the corresponding direction.
In the technical scheme, an electric feedback connection system is formed between the interior of the heat sensing mechanism 5 and the interior of the electromagnetic device 9, and a temperature feedback conversion threshold value is arranged in the electromagnetic device 9.
The left part and the right part of the electromagnetic device 9 are simultaneously matched with the arrangement of a feedback electric connection system between the electromagnetic device and the heat sensing mechanism 5, so that the working states of the two groups of permanent magnet cutting sleeves 2 are respectively started and controlled according to the temperature fed back by the heat sensing mechanism 5, the working states of the two groups of permanent magnet cutting sleeves 2 are automatically converted under the condition that the braking force applied to the transmission main shaft 1 is continuous, and the stability and the reliability are high.
In the technical scheme, a friction and wear control system is arranged in the electromagnetic device 9 and used for adjusting the basic current of the braking mechanism during starting according to the braking pressure and the braking duration of the friction plate 4.
Wherein, to the setting of the inside friction and wear control system of electromagnetic means 9 to the operating time of two sets of permanent magnetism cutting ferrule 2 of even distribution and pressure size make the wearing and tearing state of two sets of permanent magnetism cutting ferrule 2 similar, and can not cause the excessive wearing and tearing of a certain set of permanent magnetism cutting ferrule 2, the unworn phenomenon of another set of permanent magnetism cutting ferrule 2, and then improved when the operating condition of conversion permanent magnetism cutting ferrule 2 effectively, it all can provide good braking efficiency.
Meanwhile, when the braking mechanism is in an initial state, the size of the gap between each of the two groups of permanent magnet clamping sleeves 2 and the corresponding two groups of brake discs 7 can be effectively adjusted, so that the braking mechanism is ensured to have good braking efficiency when started, and the phenomenon that the braking performance is reduced due to the change of the gap between each friction plate 4 and the corresponding brake disc 7 caused by normal abrasion of the friction plate can be avoided.
The use method and the working principle of the embodiment are as follows:
firstly, the braking mechanism is fixedly connected to a prime motor and a driven motor through a transmission main shaft 1, a circuit control system on the braking mechanism is well connected, an electromagnetic device 9 does not generate any magnetic force in an initial state, and under the condition that the two groups of permanent magnet clamping sleeves 2 are magnetically attracted, the two groups of permanent magnet clamping sleeves 2 are matched with a limiting sleeve 10 to keep the middle position of the transmission main shaft 1 to rotate along with the transmission main shaft 1 all the time, when braking is needed, the electromagnetic device 9 on one side is selected to be started and generate a corresponding magnetic field according to the judgment on the abrasion of a friction plate 4 on the electromagnetic device 9, so that the permanent magnet clamping sleeve 2 on the corresponding side moves outwards, and meanwhile, the friction plate 4 on the permanent magnet clamping sleeve is driven to move outwards to be in frictional contact with a brake disc 7 on a fixed support 6, and braking force is generated to force the transmission main shaft 1 to decelerate or stop;
when a certain group of friction plates 4 are in contact with the brake disc 7 for a long time to implement braking, the temperature on the certain group of friction plates can be gradually increased and is monitored by the heat sensing mechanism 5 to be fed back to the electromagnetic device 9 in real time, when the temperature on the certain group of friction plates reaches a preset threshold value, the electromagnetic device 9 can synchronously start the other part and generate a corresponding magnetic field to drive the other group of permanent magnet sleeve 2 to move outwards, so that the friction plates 4 on the certain group of friction plates are in contact with the other group of brake disc 7 and generate corresponding friction braking force, and then the current of the part on the side with the overhigh temperature is automatically cut off, so that the part returns to the initial position under the magnetic attraction of the permanent magnet sleeve 2;
and when a strong braking force is needed due to emergency braking, the two groups of permanent magnetic cutting sleeves 2 can be started simultaneously to frictionally press the corresponding brake disc 7, so that a corresponding braking force is generated for emergency stop of the transmission main shaft 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a magnetic force formula arrestment mechanism, includes transmission main shaft (1), its characterized in that: the two sides of the outer surface of the transmission main shaft (1) are respectively provided with a group of permanent magnetic clamping sleeves (2), one side of the outer part of each permanent magnetic clamping sleeve (2) is fixedly provided with a heat insulating sheet (3), the other side of each heat insulating sheet (3) is fixedly provided with a friction sheet (4), the outer parts of the two ends of the transmission main shaft (1) are respectively provided with a group of heat sensing mechanisms (5), the outer surface of each heat sensing mechanism (5) is fixedly provided with a fixed support (6), the inner side of each fixed support (6) is fixedly provided with a brake disc (7), the inner parts of the two groups of fixed supports (6) are fixedly provided with a plurality of groups of fixed connecting rods (8), the middle parts of the outer surfaces of the fixed connecting rods (8) are fixedly provided with electromagnetic devices (9) and the middle parts of the outer surfaces of the two groups of permanent magnetic clamping sleeves (2), and the middle parts of the outer surface of the transmission main shaft (1) are fixedly sleeved with a limiting sleeve (10), two ends of the limiting sleeve (10) are respectively contacted with the inner sides of the group of permanent magnetic clamping sleeves (2);
the electromagnetic device (9) on one side is selected to be started and generate a corresponding magnetic field, so that the permanent magnet clamping sleeve (2) on the corresponding side moves outwards, meanwhile, the friction plate (4) on the permanent magnet clamping sleeve is driven to move outwards to be in friction contact with the brake disc (7) on the fixed support (6), and braking force is generated to force the transmission main shaft (1) to decelerate or stop.
2. A magnetic brake mechanism according to claim 1, wherein: the inner sides of the permanent magnet cutting sleeves (2) are of conical structures, and the magnetism of one side of the conical structures on the two groups of permanent magnet cutting sleeves (2) is attracted.
3. A magnetic brake mechanism according to claim 1, wherein: the electromagnetic device (9) is respectively provided with a left part and a right part which are independent from each other, and the magnetism generated by the two parts is respectively repelled with the magnetism of the permanent magnetic card sleeve (2) in the corresponding direction.
4. A magnetic brake mechanism according to claim 1, wherein: an electric feedback connection system is formed between the interior of the heat sensing mechanism (5) and the interior of the electromagnetic device (9), and a temperature feedback conversion threshold value is arranged in the electromagnetic device (9).
5. A magnetic brake mechanism according to claim 1, wherein: and a friction and wear control system is arranged in the electromagnetic device (9) and is used for adjusting the basic current of the brake mechanism during starting according to the brake pressure and the brake duration of the friction plate (4).
CN202110213409.1A 2021-02-26 2021-02-26 Magnetic braking mechanism Active CN113027952B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110213409.1A CN113027952B (en) 2021-02-26 2021-02-26 Magnetic braking mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110213409.1A CN113027952B (en) 2021-02-26 2021-02-26 Magnetic braking mechanism

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Publication Number Publication Date
CN113027952A CN113027952A (en) 2021-06-25
CN113027952B true CN113027952B (en) 2022-06-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744609A (en) * 1971-03-31 1973-07-10 Bendix Corp Self-adjusting two-way electromagnetic disc clutch
US4386684A (en) * 1980-07-30 1983-06-07 Kelsey-Hayes Company Electric brake magnet
DE3942542A1 (en) * 1989-12-22 1991-06-27 Lungu Cornelius BISTABLE MAGNETIC DRIVE WITH PERMANENT MAGNETIC HUBANKER
CN202251582U (en) * 2011-09-30 2012-05-30 宁波中大力德传动设备有限公司 Electromagnetic brake
CN204213220U (en) * 2014-09-19 2015-03-18 尹时中 A kind of two brake spring pressurization electromagnetic brake
CN104696392A (en) * 2014-12-31 2015-06-10 丹棱联合机械实业有限公司 Electromagnetic brake
CN105840694B (en) * 2016-06-21 2018-08-10 重庆交通大学 Electromagnetism and rub compound disk brake and its braking method
CN108533642A (en) * 2018-06-13 2018-09-14 江苏大学 A kind of double plate Electromagnetic heating brake and its control method
CN108895096B (en) * 2018-08-02 2019-12-03 江苏大学 A kind of permanent magnetism double disk brake and its braking method
CN110671446A (en) * 2019-11-04 2020-01-10 安徽立信电磁离合器有限公司 Double-safety electromagnetic power-off brake
CN110905942A (en) * 2019-12-18 2020-03-24 中国科学院长春光学精密机械与物理研究所 Symmetric dry friction electromagnetic power-off brake

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Address after: 257000 No. 66, Shengxing Road, Kenli District, Dongying City, Shandong Province

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