A high-stability electromagnetic brake convenient to disassemble

Abstract

The application discloses a high-stability electromagnetic brake convenient to disassemble, and relates to the technical field of brakes. The high-stability electromagnetic brake convenient to disassemble comprises a shell, a base is arranged on the top of the shell through a connecting shaft, a rotating shaft channel is arranged in the middle of the top of the shell, a armature is arranged on the surface of the rotating shaft channel between the base and the shell, an electromagnetic coil is arranged in the shell, an installation mechanism is arranged at the bottom of the shell, a compensation assembly is arranged on the top of the armature, a rotating disc is rotatably connected to the peripheral surface of the rotating shaft channel in the internal cavity of the device shell, a connecting rod is arranged in the armature in a limiting mode, and an unlocking assembly is arranged at the bottom of the shell. The armature and the shell are simple to install, and one person can operate the armature and the shell. The gap between the armature and the electromagnetic coil in each direction is ensured to be the same, the armature and the electromagnetic coil are simple to adjust, and automatic compensation after wear of brake pads is realized.

Description

Technical Field

[0001] This invention relates to the field of brake technology, specifically to a highly stable electromagnetic brake that is easy to assemble and disassemble. Background Technology

[0002] Brakes are widely used in metallurgy, construction, chemical industry, food, machinery, transport ships, and packaging, serving as braking devices for related mechanical rotating power equipment (mostly electric motors). Among them, the power-off electromagnetic brake (also known as the "power-off brake") is a safety device that relies on electromagnetic force to release and automatically brakes when power is lost. Its core feature is that it brakes immediately when power is lost or a malfunction occurs, ensuring that the equipment stops moving. It is often used in situations requiring safety protection, especially in the event of an unexpected power outage, which can effectively prevent accidents and ensure the safety of personnel and equipment.

[0003] Existing electromagnetic brakes require pressing the armature to overcome the spring force and gradually bring it closer to the electromagnetic coil before installation. This often necessitates multiple people working together, making installation inconvenient. Furthermore, the distance between the armature and the electromagnetic coil needs to be adjusted evenly, requiring the tightening of multiple bolts and the use of feeler gauges to ensure consistent clearance in all directions. This adjustment process is cumbersome. Additionally, with prolonged use, the brake pads on the armature wear down, increasing the gap between the brake pads and the friction disc, thus weakening braking performance.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing high-stability electromagnetic brakes. Summary of the Invention

[0005] The purpose of this invention is to provide a highly stable electromagnetic brake that is easy to install and disassemble, in order to solve the problems in the prior art where the installation between the armature and the electromagnetic coil is inconvenient, the gap adjustment is cumbersome, and the brake pads on the armature will wear, which will increase the gap between the brake pads and the friction disc, resulting in weakened braking performance. The technical solution of this invention provides a solution that is significantly different from the existing technology, addressing the problem that the existing solutions are too simplistic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a highly stable electromagnetic brake that is easy to assemble and disassemble, comprising a housing, a base mounted on the top of the housing via a connecting shaft, a rotating shaft channel extending through the middle of the base and the top of the housing, an armature sleeved on the surface of the rotating shaft channel between the base and the housing, a friction disc sleeved above the armature via a bushing, an electromagnetic coil disposed inside the housing, an installation mechanism disposed at the bottom of the housing, and a compensation component disposed on the top of the armature;

[0007] The installation mechanism includes a device housing fixedly connected to the bottom of the housing. A rotating disk is rotatably connected to the outer surface of the rotating shaft channel inside the cavity of the device housing. A gear is arranged outside the rotating disk inside the cavity of the device housing, and the top of the gear is rotatably connected to the top of the cavity of the device housing. A ratchet is fixedly connected to the bottom groove of the rotating disk. A pawl is arranged at the bottom of the cavity of the device housing corresponding to the position of the ratchet. The pawl is rotatably connected to the bottom of the cavity of the device housing by a torsion spring. A connecting rod is limited inside the armature. The bottom of the connecting rod extends into the cavity of the device housing and is threadedly connected to the inside of the gear. An unlocking component is provided at the bottom of the housing.

[0008] Preferably, the unlocking component includes an abutment rod, which is slidably fitted inside the device housing. The top end of the abutment rod extends into the groove at the bottom of the rotating disk, and the bottom end of the abutment rod extends out of the bottom of the device housing and is provided with a pressing rod. The two sides of the abutment rod slide within the cavity below the rotating disk inside the device housing. A first spring is fixedly connected to the top of the cavity below the rotating disk, and the bottom of the first spring is fixedly connected to the two sides of the abutment rod. An abutment block is fixedly connected to the other side of the pawl at the position corresponding to the top end of the abutment rod.

[0009] Preferably, the compensation component includes a brake pad, which is slidably fitted into a groove at the top of the armature near the shaft channel. Limiting rods are fixedly connected to both ends of the bottom of the groove at the top of the armature and extend into the brake pad. A movable plate is slidably fitted into the cavity on both sides of the limiting rod inside the brake pad. A second spring is fixedly connected to the side of the movable plate away from the limiting rod. The other end of the second spring is connected to the inner wall of the cavity on both sides of the limiting rod. Limiting teeth are fixedly connected to the surface of the movable plate near the limiting rod. An electromagnet is provided at the bottom of the groove at the top of the armature between the limiting rods.

[0010] Preferably, the top of the housing is provided with a plurality of accommodating grooves evenly distributed around its circumference, and a third spring is fixedly connected to the bottom of the accommodating groove, with the top of the third spring abutting against the bottom of the armature.

[0011] Preferably, the top of one end of the rotating disk near the rotating shaft channel is connected to the inner wall of the cavity inside the device housing via a torsion spring, a rotating rod is fixedly connected to the bottom of the ratchet, the rotating rod extends out of the device housing, and an arc-shaped groove is provided at the bottom of the device housing corresponding to the rotating rod.

[0012] Preferably, the outer surface of the rotating disk is uniformly provided with a number of teeth, and five sets of gears are uniformly provided around the outer surface of the rotating disk, with the five sets of gears meshing with each other.

[0013] Preferably, a speed detector is installed on the inner wall of the rotating shaft channel, a limit block is provided on the surface of the bushing, and a protrusion is provided on the inner wall of the area above the rotating shaft channel corresponding to the limit block on the surface of the bushing.

[0014] Preferably, the contact surface at the top of the contact rod is configured as an inclined structure, the contact surfaces on both sides of the limiting rod are configured as inclined structures, and the tooth direction of the limiting tooth is opposite to the inclination direction of the contact surfaces on both sides of the limiting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The present invention is provided with a rotating disk, gears, ratchet, pawl and connecting rod. The connecting rod is placed into the armature and inserted into the housing. Then the rotating rod is rotated to drive the ratchet to rotate. The ratchet rotates in conjunction with the pawl to drive the rotating disk to rotate. The ratchet and pawl cooperate to prevent the rotating disk from reversing during the installation process. The rotation of the rotating disk drives the outer gear to rotate, so that the thread in the bottom area of ​​the connecting rod meshes with the thread opened in the gear. Continue to rotate the rotating rod to realize the installation between the armature and the housing. The installation is relatively simple and can be operated by a single person. At the same time, the rotating rod can also adjust the gap between the armature and the electromagnetic coil. Since the rotation of the rotating disk can drive the five sets of gears to rotate at the same time, the connecting rod drives the armature to be adjusted evenly, ensuring that the gap between the armature and the electromagnetic coil in all directions is the same, and the adjustment is relatively simple.

[0017] (2) The present invention is provided with brake pads, limit rods, moving plates, speed detectors, limit teeth and electromagnets. The speed detectors detect the braking time of the rotating shaft during braking. When the braking time is long, the electromagnets are energized to provide a reverse repulsive force to drive the brake pads to move upward, thereby realizing automatic compensation after the brake pads are worn. At the same time as the brake pads move upward, the inclined surfaces at both ends of the limit rods will abut against the sides of the moving plate. After the brake pads move to the appropriate position, the limit teeth on the moving plate will mesh with the sides of the limit rods to prevent the brake pads from being pushed back by the strong pressure during braking, which would lead to braking failure. This effectively solves the problem of the brake pads increasing the gap between them and the friction disc after long-term use, which leads to a weakening of braking performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the internal structure of the present invention;

[0020] Figure 3 This is a cross-sectional view of the internal structure of the present invention from another angle;

[0021] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B;

[0023] Figure 6 This is a schematic diagram of the bottom structure of the device housing of the present invention;

[0024] Figure 7 This is a schematic diagram of the bushing structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the internal structure of the device housing of the present invention;

[0026] Figure 9 This is a schematic diagram of the abutment rod structure of the present invention.

[0027] In the diagram: 1. Housing; 2. Base; 3. Armature; 4. Bushing; 5. Friction disc; 6. Electromagnetic coil; 71. Device housing; 72. Rotating disc; 73. Gear; 74. Ratchet; 75. Pad; 76. Connecting rod; 771. Abutting rod; 772. Abutting block; 81. Brake pad; 82. Limiting rod; 83. Moving plate; 84. Limiting tooth; 85. Electromagnet; 9. Rotating rod; 10. Arc-shaped groove; 11. Protrusion. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-9This invention provides a technical solution: a highly stable electromagnetic brake that is easy to assemble and disassemble, comprising a housing 1, a base 2 mounted on the top of the housing 1 via a connecting shaft, a rotating shaft channel extending through the base 2 and the top of the housing 1, a speed detector mounted on the inner wall of the rotating shaft channel, a limiting block provided on the surface of a bushing 4, a protrusion 11 provided on the inner wall of the area above the rotating shaft channel corresponding to the limiting block on the surface of the bushing 4, an armature 3 sleeved between the base 2 and the housing 1 on the surface of the rotating shaft channel, and a plurality of accommodating grooves evenly distributed circumferentially on the top of the housing 1. A third spring is fixedly connected to the bottom of the receiving groove. The top of the third spring abuts against the bottom of the armature 3. A friction disc 5 is sleeved on the top of the armature 3 through a bushing 4. An electromagnetic coil 6 is provided inside the housing 1. The base 2 is fixed to the front cover of the drive motor by bolts. Then the bushing 4 is sleeved on the rotating shaft of the drive motor. The friction disc 5 is sleeved on the outer surface of the bushing 4 so that the limiting block on the outer surface of the bushing 4 is engaged with the protrusion 11 in the area above the rotating shaft channel. An installation mechanism is provided at the bottom of the housing 1, and a compensation component is provided at the top of the armature 3.

[0030] The mounting mechanism includes a device housing 71 fixedly connected to the bottom of the housing 1. A rotating disk 72 is rotatably connected to the outer surface of the rotating shaft channel within the internal cavity of the device housing 71. A gear 73 is disposed within the internal cavity of the device housing 71, located around the rotating disk 72. The top of the gear 73 is rotatably connected to the top of the internal cavity of the device housing 71. A ratchet 74 is fixedly connected to a groove at the bottom of the rotating disk 72. A pawl 75 is disposed at the bottom of the internal cavity of the device housing 71 corresponding to the position of the ratchet 74. The pawl 75 communicates with the bottom of the internal cavity of the device housing 71 via a [transmission mechanism]. A torsion spring is used for rotational connection. A connecting rod 76 is provided inside the armature 3 for limiting its movement. The bottom of the connecting rod 76 extends into the internal cavity of the device housing 71 and is threadedly connected to the gear 73. Several teeth are evenly arranged circumferentially on the outer surface of the rotating disk 72. Five sets of gears 73 are evenly arranged around the outer periphery of the rotating disk 72, and these five sets of gears 73 mesh with the teeth. The top of the end of the rotating disk 72 near the shaft channel is connected to the inner wall of the internal cavity of the device housing 71 via a torsion spring. A rotating rod 9 is fixedly connected to the bottom of the ratchet 74. The rotating rod 9 extends... Extending out of the device housing 71, the bottom of the device housing 71 has an arc-shaped sliding groove 10 corresponding to the rotating rod 9. The five sets of connecting rods 76 are placed into the corresponding mounting holes on the surface of the armature 3, and the extended parts are inserted into the housing 1 until they reach the device housing 71 and contact the threaded hole at the top of the gear 73. At this time, the housing 1 is fitted onto the rotating shaft of the drive motor and fixed to the base 2 by bolts. Then, rotating the rotating rod 9 drives the ratchet 74 to rotate. The rotation of the ratchet 74, in conjunction with the pawl 75, drives the rotating disk 72 to rotate. The rotation of the rotating disk 72 drives the outer gear 73 to rotate, so that the thread in the bottom area of ​​the connecting rod 76 meshes with the thread inside the gear 73. Continuing to rotate the rotating rod 9 makes the armature 3 overcome the spring force of the third spring and be fixed to the housing 1. Slowly rotating the rotating rod 9 drives the rotating disk 72 to rotate. The rotation of the rotating disk 72 can simultaneously drive the five sets of gears 73 to rotate. At this time, the five sets of connecting rods 76 simultaneously drive the armature 3 to move, evenly adjusting the gap between the armature 3 and the electromagnetic coil 6. The bottom of the housing 1 is provided with an unlocking component.

[0031] In one embodiment of the present invention, the unlocking component includes an abutment rod 771, which is slidably fitted inside the device housing 71. The top end of the abutment rod 771 extends into the bottom groove of the rotating disk 72, and the bottom end of the abutment rod 771 extends out of the bottom of the device housing 71 and is provided with a pressing rod. The two sides of the abutment rod 771 are limited and slidably located in the cavity below the rotating disk 72 inside the device housing 71. A first spring is fixedly connected to the top of the cavity below the rotating disk 72, and the bottom of the first spring is fixedly connected to the two sides of the abutment rod 771. A stop block 772 is fixedly connected to the other side of the pawl 75 corresponding to the top end of the abutment rod 771. The abutment surface at the top end of the abutment rod 771 is set as an inclined structure. When the pressing rods on both sides of the bottom of the device housing 71 are pressed, the abutment rod 771 is moved into the device housing 71. The inclined surface of the top end of the abutment rod 771 abuts against the stop block 772, causing the pawl 75 to rotate and its abutment surface to disengage from the tooth surface of the ratchet 74.

[0032] In one embodiment of the present invention, the compensation component includes a brake pad 81, which is slidably fitted into a groove at the top of the armature 3 near the shaft channel. Limiting rods 82 are fixedly connected to both ends of the bottom of the groove at the top of the armature 3, extending into the brake pad 81. A movable plate 83 is slidably fitted into the cavities on both sides of the limiting rods 82 inside the brake pad 81. A second spring is fixedly connected to the side of the movable plate 83 away from the limiting rods 82, and the other end of the second spring is connected to the inner wall of the cavities on both sides of the limiting rods 82. Limiting teeth 84 are fixedly connected to the surface of the movable plate 83 near the limiting rods 82. An electromagnet is provided at the bottom of the groove at the top of the armature 3 between the limiting rods 82. 85. The contact surfaces on both sides of the limiting rod 82 are set as inclined structures. The tooth direction of the limiting tooth 84 is opposite to the inclination direction of the contact surfaces on both sides of the limiting rod 82. The speed detector control circuit energizes the electromagnet 85 to provide a reverse repulsive force to drive the brake pad 81 to move upward. The upward movement of the brake pad 81 causes the inclined surfaces at both ends of the limiting rod 82 to move against both sides of the moving plate 83. When the brake pad 81 moves to the appropriate position under the action of the repulsive force of the electromagnet 85, the inclined surfaces at both ends of the limiting rod 82 will engage with the limiting teeth 84 on the moving plate 83 to fix the compensated brake pad 81 and prevent the strong pressure from pushing the brake pad 81 back during braking, which would cause braking failure.

[0033] Working principle: First, the base 2 is fixed to the front cover of the drive motor with bolts. Then, the bushing 4 is fitted onto the rotating shaft of the drive motor. Next, the friction disc 5 is fitted onto the outer surface of the bushing 4, so that the limiting block on the outer surface of the bushing 4 engages with the protrusion 11 in the area above the rotating shaft channel. Then, the five sets of connecting rods 76 are placed into the corresponding mounting holes on the surface of the armature 3, and the extended parts are inserted into the housing 1 until they reach the device housing 71 and contact the threaded hole at the top of the gear 73. At this time, the housing 1 is fitted onto the rotating shaft of the drive motor and fixed to the base 2 with bolts. Then, the rotating rod 9 is rotated to drive the ratchet 74 to rotate. The ratchet 74 rotates and engages with the gear. The pawl 75 drives the rotating disk 72 to rotate, and the rotating disk 72 drives the outer gear 73 to rotate, so that the thread in the bottom area of ​​the connecting rod 76 meshes with the thread inside the gear 73. The rotating rod 9 continues to rotate, so that the armature 3 overcomes the spring force of the third spring and is fixed to the housing 1. Finally, the rotating rod 9 is slowly rotated to drive the rotating disk 72 to rotate. The rotation of the rotating disk 72 can drive the five sets of gears 73 to rotate at the same time. At this time, the five sets of connecting rods 76 simultaneously drive the armature 3 to move, and evenly adjust the gap between the armature 3 and the electromagnetic coil 6, ensuring that the gap between the armature 3 and the electromagnetic coil 6 is the same in all directions, reducing the number of times to adjust in different directions.

[0034] When brake pads 81 wear down after prolonged use, a speed detector monitors the braking time of the rotating shaft during braking. If the braking time is too long, the speed detector control circuit energizes the electromagnet 85, providing a reverse repulsive force to move brake pads 81 upwards. This upward movement causes the inclined surfaces at both ends of the limiting rod 82 to abut against the sides of the moving plate 83. Once the brake pads 81 have moved to the appropriate position under the repulsive force of the electromagnet 85, the inclined surfaces at both ends of the limiting rod 82 engage with the limiting teeth 84 on the moving plate 83, securing the compensated brake pads 81 and preventing them from being damaged by strong pressure during braking. When brake pad 81 is pushed back, causing brake failure, and brake pad 81 needs to be replaced, simply remove housing 1 and armature 3 from base 2. Then, simultaneously press the pressing rods on both sides of the bottom of device housing 71 to move the abutment rod 771 into device housing 71. The top inclined surface of the abutment rod 771 abuts against the abutment block 772, causing the pawl 75 to rotate. Its abutment surface disengages from the tooth surface of ratchet 74. At this time, the rotating disk 72 reverses under the action of its top torsion spring. The reverse rotation of the rotating disk 72 drives the gear 73 to rotate in the opposite direction, causing the bottom of the connecting rod 76 to disengage from the inside of the gear 73. Finally, remove armature 3 and replace the brake pad 81 on its surface.

[0035] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly stable electromagnetic brake that is easy to assemble and disassemble, comprising a housing (1), characterized in that: A base (2) is mounted on the top of the housing (1) via a connecting shaft. A rotating shaft channel is provided through the middle of the base (2) and the top of the housing (1). An armature (3) is sleeved on the surface of the rotating shaft channel between the base (2) and the housing (1). A friction disc (5) is sleeved on the top of the armature (3) via a bushing (4). An electromagnetic coil (6) is provided inside the housing (1). An installation mechanism is provided at the bottom of the housing (1). A compensation component is provided on the top of the armature (3). The installation mechanism includes a device housing (71) fixedly connected to the bottom of the housing (1). A rotating disk (72) is rotatably connected to the outer surface of the rotating shaft channel inside the cavity of the device housing (71). A gear (73) is provided inside the cavity of the device housing (71) outside the rotating disk (72). The top of the gear (73) is rotatably connected to the top of the cavity of the device housing (71). A ratchet (74) is fixedly connected to the bottom groove of the rotating disk (72). A pawl (75) is provided at the bottom of the cavity of the device housing (71) corresponding to the position of the ratchet (74). The pawl (75) is rotatably connected to the bottom of the cavity of the device housing (71) by a torsion spring. A connecting rod (76) is provided inside the armature (3) for limiting. The bottom of the connecting rod (76) extends into the cavity of the device housing (71) and is threadedly connected to the gear (73). An unlocking component is provided at the bottom of the housing (1). The unlocking component includes a stop rod (771), which is fitted and slidably installed inside the device housing (71). The top end of the stop rod (771) extends into the bottom groove of the rotating disk (72), and the bottom end of the stop rod (771) extends out of the bottom of the device housing (71) and is provided with a pressing rod. The two sides of the stop rod (771) are limited and slidable inside the device housing (71) in the cavity below the rotating disk (72). A first spring is fixedly connected to the top of the cavity below the rotating disk (72), and the bottom of the first spring is fixedly connected to the two sides of the stop rod (771). A stop block (772) is fixedly connected to the other side of the pawl (75) corresponding to the top end of the stop rod (771). The compensation component includes a brake pad (81), which is fitted and slidably installed in the top groove of the armature (3) near the shaft channel. Limiting rods (82) are fixedly connected to the bottom two ends of the top groove of the armature (3) and extend into the brake pad (81). A movable plate (83) is fitted and slidably installed in the cavity on both sides of the limiting rod (82) inside the brake pad (81). A second spring is fixedly connected to the side of the movable plate (83) away from the limiting rod (82). The other end of the second spring is connected to the inner wall of the cavity on both sides of the limiting rod (82). Limiting teeth (84) are fixedly connected to the surface of the movable plate (83) near the limiting rod (82). An electromagnet (85) is provided at the bottom of the top groove of the armature (3) between the limiting rods (82).

2. The highly stable electromagnetic brake that is easy to assemble and disassemble according to claim 1, characterized in that: The top of the housing (1) is evenly provided with several receiving grooves, and a third spring is fixedly connected to the bottom of the receiving groove, with the top of the third spring abutting against the bottom of the armature (3).

3. The highly stable electromagnetic brake that is easy to assemble and disassemble according to claim 1, characterized in that: The top of the rotating disk (72) near the shaft channel is connected to the inner wall of the cavity inside the device housing (71) by a torsion spring. The bottom of the ratchet (74) is fixedly connected to a rotating rod (9). The rotating rod (9) extends out of the device housing (71). The bottom of the device housing (71) is provided with an arc-shaped groove (10) corresponding to the rotating rod (9).

4. The highly stable electromagnetic brake that is easy to assemble and disassemble according to claim 1, characterized in that: The outer surface of the rotating disk (72) is uniformly provided with a number of teeth, and five sets of gears (73) are uniformly provided on the outer periphery of the rotating disk (72), and the five sets of gears (73) mesh with the teeth.

5. A highly stable electromagnetic brake that is easy to assemble and disassemble according to claim 1, characterized in that: A speed detector is installed on the inner wall of the rotating shaft channel, a limit block is provided on the surface of the bushing (4), and a protrusion (11) is provided on the inner wall of the area above the rotating shaft channel corresponding to the limit block on the surface of the bushing (4).

6. A highly stable electromagnetic brake that is easy to assemble and disassemble according to claim 1, characterized in that: The top contact surface of the abutting rod (771) is set as an inclined structure, the contact surfaces on both sides of the limiting rod (82) are set as inclined structures, and the tooth direction of the limiting tooth (84) is opposite to the inclined direction of the contact surfaces on both sides of the limiting rod (82).

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