Electromagnetic brake

Abstract

The utility model discloses an electromagnetic brake which comprises a magnet base, an electromagnetic coil, a brake spring, an armature, a guide column, a friction plate and a brake disc. When the electromagnetic coil is powered on, magnetic pulling force is generated to enable the armature to drive the friction plate to be separated from the brake disc; and when power is off, the brake spring pushes the armature to enable the friction plate to contact with the brake disc for braking. The magnet seat is provided with a mounting groove for mounting the electromagnetic coil, the brake spring is circumferentially distributed and is a spiral compression spring, at least two guide columns are circumferentially and uniformly distributed, and the armature is made of ferromagnetic materials. The brake is stable and reliable in braking, rapid and efficient in response, compact in structure and high in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of braking device technology, specifically to an electromagnetic brake. Background Technology

[0002] In modern industry, mechanical transmission systems are widely used in various mechanical equipment. As an indispensable key component in mechanical transmission systems, brakes undertake the core functions of equipment braking and positioning. Their performance directly affects the operational safety, reliability, and work efficiency of mechanical equipment.

[0003] Currently, most traditional brakes on the market use mechanical friction braking or basic electromagnetic braking. Mechanical friction braking mainly relies on direct contact and friction between mechanical structures to achieve braking, but this method has obvious drawbacks. With increased use, wear of mechanical parts is inevitable. Once parts wear out, the braking force gradually decreases, leading to a decline in braking performance and making it difficult to guarantee long-term stable braking effects. At the same time, the installation accuracy of the mechanical structure also has a significant impact on braking performance. Installation deviations may cause uneven distribution of braking force, further reducing braking reliability.

[0004] Traditional brakes also have shortcomings in terms of braking response. For some mechanical equipment that requires frequent and rapid start-stop or emergency stop, traditional mechanical structures are relatively slow to act when braking or releasing the brake, and cannot respond to the braking needs of the equipment in a timely manner, which can easily lead to safety hazards and cannot meet the requirements of efficient operation in modern industrial production.

[0005] Furthermore, in terms of structural design, many traditional brakes suffer from unreasonable layout and structural redundancy, resulting in a large overall size and occupying excessive installation space. This not only increases the overall size and weight of the equipment but also limits its miniaturization and integration design, contradicting the current trend of industrial equipment pursuing compactness and efficiency. Therefore, developing a new type of electromagnetic brake with stable braking performance, rapid response, and compact structure is of great significance for improving the performance of mechanical transmission systems. Utility Model Content

[0006] The purpose of this invention is to provide an electromagnetic brake to solve the problems of unstable braking performance, slow response speed, and unreasonable structural design in existing brakes.

[0007] To achieve the above objectives, the present invention employs the following technical means:

[0008] An electromagnetic brake includes a magnet base, an electromagnetic coil embedded in one side of the magnet base, multiple sets of brake springs inserted into one side of the magnet base, an armature connected to the brake springs on one side of the magnet base, a guide post movably inserted into the armature with one end connected to the magnet base, multiple sets of friction plates connected to the side of the armature away from the magnet base, and a brake disc abutting against the armature through the friction plates. When the electromagnetic coil is energized, the electromagnetic coil generates a magnetic force that pulls the armature closer to the magnet base, causing the friction plates to separate from the brake disc.

[0009] Preferably, one side of the magnet holder has a mounting groove adapted to the shape of the electromagnetic coil, and the electromagnetic coil is installed in the mounting groove.

[0010] Preferably, one side of the magnet base is inlaid with multiple sets of circumferentially distributed braking springs.

[0011] Preferably, the magnet base has multiple sets of spring mounting holes that correspond one-to-one with multiple sets of brake springs. One end of the brake spring is positioned and inserted into the corresponding spring mounting hole, and the other end of the brake spring is fixedly connected to the armature.

[0012] Preferably, the braking spring is a helical compression spring.

[0013] Preferably, the magnet base has a positioning hole, the armature has a guide hole corresponding to the positioning hole, and the guide post passes through the guide hole and is positioned and inserted into the positioning hole.

[0014] Preferably, at least two guide posts are provided, and they are evenly distributed along the circumference of the armature.

[0015] Preferably, the armature is made of ferromagnetic material.

[0016] This utility model has the following beneficial effects:

[0017] 1. Stable and Reliable Braking Performance: This invention, through an innovative cooperation mechanism between the brake spring and the electromagnetic coil, changes the unstable state of traditional brakes that rely on single mechanical friction or basic electromagnetic force. The brake spring provides a continuous and stable thrust, ensuring that the friction pads and brake disc always maintain reliable contact. Even if a certain degree of wear occurs after long-term use, the spring's elastic deformation can automatically compensate for the gap, maintaining stable braking force. The electromagnetic coil precisely controls the movement of the armature, achieving reliable separation between the friction pads and the brake disc, avoiding braking failure caused by unstable electromagnetic force, and significantly improving the braking reliability throughout the entire life cycle of the brake.

[0018] 2. Fast and efficient response: Utilizing the characteristic of the electromagnetic coil to generate magnetic pull instantaneously when energized, the armature can be pulled in a very short time, causing the friction pads to quickly disengage from the brake disc and release the braking state; when the power is cut off, the brake spring immediately pushes the armature to reset, and the friction pads quickly press against the brake disc to complete the braking.

[0019] 3. Compact Structure and Strong Adaptability: The optimized design of core components such as the magnet base, armature, and guide column results in a compact and rational layout, eliminating redundant structures found in traditional brakes and effectively reducing the overall size and installation space requirements. This compact design not only facilitates integration into various miniaturized mechanical equipment but also allows for close cooperation with other transmission components. It adapts to the trend of integration and modularization in modern industrial equipment, and is widely used in robotics, CNC machine tools, new energy vehicles, and many other fields, greatly expanding the application scenarios and compatibility of brakes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an exploded view of the structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] In the attached figures, the following labels are used:

[0024] 1. Magnet base; 2. Mounting slot; 3. Electromagnetic coil; 4. Spring mounting hole; 5. Brake spring; 6. Armature; 7. Friction plate; 8. Guide hole; 9. Brake disc; 10. Positioning hole; 11. Guide post. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] like Figure 1-3As shown, an electromagnetic brake includes a magnet base 1. An electromagnetic coil 3 is embedded in one side of the magnet base 1. Multiple sets of brake springs 5 ​​are inserted into one side of the magnet base 1. An armature 6 connected to the brake springs 5 ​​is provided on one side of the magnet base 1. A guide post 11 connected to the magnet base 1 is movably inserted into the armature 6. Multiple sets of friction plates 7 are connected to the side of the armature 6 away from the magnet base 1. The armature 6 is connected to a brake disc 9 through the friction plates 7. When the electromagnetic coil 3 is energized, the electromagnetic coil 3 generates a magnetic force to pull the armature 6 closer to the magnet base 1, and the friction plates 7 separate from the brake disc 9.

[0028] Working principle

[0029] 1. When electromagnetic coil 3 is not energized

[0030] At this time, no current flows through the electromagnetic coil 3 inside the magnet base 1, and no magnetic force is generated. The brake spring 5 is in a compressed state, and its elastic thrust pushes the armature 6 to move away from the magnet base 1 along the guide post 11. The armature 6 drives the friction plate 7 to move synchronously, so that the friction plate 7 presses tightly against the brake disc 9. Due to the friction force generated between the friction plate 7 and the brake disc 9, the rotation of the brake disc 9 is locked, thereby realizing the braking function of the connecting parts. The guide post 11 passes through the armature 6 and is fixedly connected to the magnet base 1 to ensure that the armature 6 does not deviate when moving, and to ensure that the friction plate 7 and the brake disc 9 are evenly fitted, thereby improving braking stability.

[0031] II. When electromagnetic coil 3 is energized

[0032] When the electromagnetic coil 3 is powered on, it generates a strong magnetic field, which exerts a magnetic pull on the armature 6. This magnetic pull overcomes the elastic thrust of the brake spring 5, pulling the armature 6 along the guide post 11 towards the magnet base 1. The armature 6 drives the friction plate 7 to simultaneously disengage from the brake disc 9. At this point, the friction between the friction plate 7 and the brake disc 9 disappears, and the brake disc 9 returns to a state of free rotation. The electromagnetic coil 3 is embedded in the mounting groove of the magnet base 1, and the magnetic field it generates can directly act on the armature 6, reducing energy loss and ensuring a rapid response of the magnetic pull. Multiple sets of brake springs 5 ​​are evenly distributed between the magnet base 1 and the armature 6 to ensure that the armature 6 is subjected to balanced force and avoid jamming caused by unilateral force.

[0033] By switching the electromagnetic coil 3 on and off, the brake can quickly switch between the two states of "brake lock" and "free rotation". Combined with the guiding effect of the guide column 11 and the elastic compensation of the brake spring 5, efficient and stable braking control can be achieved.

[0034] Example 2

[0035] like Figure 1-3As shown, an electromagnetic brake includes a magnet base 1. An electromagnetic coil 3 is embedded in one side of the magnet base 1. Multiple sets of brake springs 5 ​​are inserted into one side of the magnet base 1. An armature 6 connected to the brake springs 5 ​​is provided on one side of the magnet base 1. A guide post 11 connected to the magnet base 1 is movably inserted into the armature 6. Multiple sets of friction plates 7 are connected to the side of the armature 6 away from the magnet base 1. The armature 6 is connected to a brake disc 9 through the friction plates 7. When the electromagnetic coil 3 is energized, the electromagnetic coil 3 generates a magnetic force to pull the armature 6 closer to the magnet base 1, and the friction plates 7 separate from the brake disc 9.

[0036] A mounting groove 2 that matches the shape of the electromagnetic coil 3 is provided on one side of the magnet base 1, and the electromagnetic coil 3 is installed in the mounting groove 2.

[0037] The advantages of the above settings are:

[0038] Maximizing magnetic field utilization: By creating a mounting slot 2 that matches the shape of the electromagnetic coil 3, the electromagnetic coil 3 can be completely embedded inside the magnet base 1. This close-fitting structural design effectively reduces magnetic circuit gaps and magnetic leakage, allowing the magnetic field generated by the electromagnetic coil 3 to act more concentratedly on the armature 6, thus significantly improving the utilization rate of magnetic field energy.

[0039] Enhanced protection: The mounting slot 2 provides comprehensive physical protection for the electromagnetic coil 3, effectively preventing the intrusion of dust, liquids, and other contaminants, and avoiding coil short circuits or insulation aging caused by the accumulation of external impurities. Simultaneously, in mechanical vibration environments, the limiting function of the mounting slot 2 prevents the electromagnetic coil 3 from shifting or shaking, extending the coil's service life.

[0040] Compact structure: The embedded installation method makes the electromagnetic coil 3 and the magnet base 1 form an integrated structure, which effectively shortens the axial dimension of the brake.

[0041] Improved heat dissipation efficiency: The inner wall of the mounting slot 2 is in full contact with the electromagnetic coil 3, providing a good path for heat conduction. As a heat conductor made of metal, the magnet base 1 can quickly dissipate the heat generated by the coil to the surrounding environment. Compared with the traditional enclosed coil design, this effectively reduces the coil's operating temperature and improves electromagnetic conversion efficiency.

[0042] Multiple sets of circumferentially distributed braking springs 5 ​​are embedded in one side of the magnet base 1.

[0043] The advantages of the above settings are:

[0044] Uniform force distribution enhances braking stability: Multiple sets of brake springs 5 ​​are circumferentially embedded on one side of the magnet base 1, ensuring that the armature 6 experiences balanced force in all directions when subjected to force. When the brake springs 5 ​​push the armature 6 closer to the brake disc 9, it prevents the armature 6 from tilting or shifting due to unilateral force, ensuring that the friction pads 7 and brake disc 9 are fully and evenly in contact, effectively preventing localized wear, significantly improving the stability and reliability of the braking process, and extending the overall service life of the brake.

[0045] Compact structure, saving installation space: The brake spring 5 is embedded inside the magnet base 1, making full use of the internal space of the magnet base 1. Compared with the structure of an external spring, the overall structure of the brake is more compact. This design reduces the radial dimension of the brake, saves installation space, is more suitable for mechanical equipment with high space requirements, and also facilitates integration with other components.

[0046] The magnet base 1 has multiple sets of spring mounting holes 4 that correspond one-to-one with multiple sets of brake springs 5. One end of the brake spring 5 is positioned and inserted into the corresponding spring mounting hole 4, and the other end of the brake spring 5 is fixedly connected to the armature 6.

[0047] The advantages of the above settings are:

[0048] Precise positioning ensures consistent braking: The multiple sets of spring mounting holes 4 on the magnet base 1 correspond one-to-one with the brake springs 5, providing a precise mounting reference for the brake springs 5. During installation, one end of the brake spring 5 can be accurately inserted into the corresponding spring mounting hole 4, ensuring that the installation position of each set of springs in the brake is fixed and consistent. This ensures that the multiple sets of brake springs 5 ​​experience the same force and deformation during operation, resulting in a uniform and stable force pushing the armature 6. This ensures that the contact pressure between the friction pad 7 and the brake disc 9 is consistent during each braking action, improving the consistency and reliability of the braking effect.

[0049] Simplified assembly process and improved production efficiency: The positioning and insertion method of the spring mounting hole 4 and the brake spring 5 reduces assembly difficulty. During the production process, workers do not need complicated calibration and adjustment; they only need to align the brake spring 5 with the corresponding spring mounting hole 4 and insert it to complete the installation, reducing assembly time and labor costs. At the same time, this standardized installation method facilitates automated assembly, is suitable for large-scale production, and can effectively improve the production efficiency and quality of brakes.

[0050] Enhanced structural stability and prevention of spring displacement: The positioning and plugging connection method ensures a reliable fixation between the brake spring 5 and the magnet seat 1, limiting the lateral displacement and rotation of the spring during operation. Even under complex operating conditions such as frequent start-stop and vibration of the brake, the brake spring 5 can remain in its original position and work stably, avoiding problems such as uneven force on the armature 6 and brake failure caused by spring displacement. This enhances the overall structural stability and reliability of the brake and extends its service life.

[0051] Braking spring 5 is a helical compression spring.

[0052] The advantages of the above settings are:

[0053] Stable and reliable elastic force output: The helical compression spring, through its precise helical structure design, generates a stable and adjustable elastic force during compression and extension. When the electromagnetic brake is in operation, it can precisely provide thrust according to braking requirements, pushing the armature 6 to press the friction plate 7 against the brake disc 9. Furthermore, the elastic characteristics of the helical compression spring are less affected by environmental factors; even under different temperature and humidity conditions, it maintains stable elastic performance, ensuring long-term reliable operation of the brake and effectively avoiding brake failure caused by unstable elastic force.

[0054] Excellent deformation adaptability: The helical compression spring has a large compression stroke and deformation capacity. When the electromagnetic coil 3 is energized to generate magnetic pull to overcome the spring thrust, it can be fully compressed to achieve rapid movement of the armature 6, causing the friction plate 7 to quickly separate from the brake disc 9. After the power is cut off, it can quickly recover its deformation and push the armature 6 back to its original position. This excellent deformation adaptability can meet the requirements of frequent braking and braking release of the brake, improving the brake's response speed and working efficiency.

[0055] Compact structure and space-saving: The helical compression spring has a helical three-dimensional structure, which occupies less space than other types of springs while providing the same elastic force. Applying it to electromagnetic brakes makes the overall brake structure more compact, facilitating layout and installation in limited spaces. It is especially suitable for mechanical equipment with strict space requirements, and also facilitates the miniaturization of the brake design.

[0056] The magnet base 1 has a positioning hole 10, the armature 6 has a guide hole 8 corresponding to the positioning hole 10, and the guide post 11 passes through the guide hole 8 and is positioned and inserted into the positioning hole 10.

[0057] The advantages of the above settings are:

[0058] Precise positioning ensures assembly accuracy: the positioning holes 10 of the magnet base 1 correspond one-to-one with the guide holes 8 of the armature 6, and the guide post 11 passes through both holes to achieve positioning and insertion, providing a precise positioning benchmark for the installation of the armature 6 on the magnet base 1. This structural design effectively avoids the offset or misalignment of the armature 6 during assembly, ensuring that the armature 6 is in the correct position after installation, so that the friction plate 7 and the brake disc 9 can be precisely aligned, laying the foundation for a stable and reliable braking effect. At the same time, the standardized hole design facilitates automated assembly, improving production efficiency and product consistency.

[0059] Stable guidance and improved braking reliability: The guide post 11, passing through the guide hole 8, plays a stable guiding role during the movement of the armature 6. When the electromagnetic coil 3 is energized or de-energized, and the armature 6 reciprocates under the action of the brake spring 5 and magnetic pull, the guide post 11 can limit the lateral displacement of the armature 6, ensuring its smooth axial movement and preventing the armature 6 from tilting or wobbling. This ensures that the friction pad 7 always fits evenly against the brake disc 9, preventing localized wear, extending the service life of the friction pad 7 and the brake disc 9, and improving the stability and reliability of the brake during operation.

[0060] Enhancing structural stability and reducing the risk of failure: The positioning and plugging connection method forms a stable integral structure for the magnet base 1, guide post 11, and armature 6, effectively enhancing the mechanical strength of the brake. Even under conditions of frequent brake starts and stops, and exposure to significant vibration or impact, this structure ensures that the relative positions of the components remain unchanged, preventing brake failure due to component loosening or displacement. Furthermore, the supporting function of the guide post 11 disperses the forces acting on the armature 6 during movement, reducing the risk of component damage and further improving the brake's durability.

[0061] Easy disassembly and maintenance: The plug-in connection between the guide post 11 and the positioning hole 10 and guide hole 8 makes disassembly and installation simple and easy during brake maintenance or repair. If it is necessary to replace components such as the armature 6 and friction plate 7, simply pull the guide post 11 out of the hole to separate the armature 6 from the magnet seat 1. No complicated tools or cumbersome procedures are required, which greatly shortens maintenance time, reduces maintenance costs, and improves the maintainability of the equipment.

[0062] At least two guide posts 11 are provided and are evenly distributed along the circumference of the armature 6.

[0063] The advantages of the above settings are:

[0064] Uniform force distribution ensures braking stability: At least two guide posts 11 are evenly distributed around the armature 6, providing balanced support from multiple directions during the movement of the armature 6. When the brake spring 5 pushes the armature 6 to press against the brake disc 9, or when the electromagnetic coil 3 is energized to pull the armature 6 back to its original position, the evenly distributed guide posts 11 prevent the armature 6 from tilting or twisting due to uneven force distribution, ensuring that the friction pad 7 and the brake disc 9 are always fully and evenly in contact, effectively preventing localized wear and significantly improving the stability and reliability of the braking process.

[0065] Enhanced structural stability and improved load-bearing capacity: Multiple guide posts 11 form a stable support structure, which, compared to a single guide post, can better distribute the forces experienced by the armature 6 during movement, effectively enhancing the overall structural stability of the brake. Even under conditions of significant vibration, impact, or high load, the evenly distributed guide posts 11 ensure a stable connection between the armature 6 and the magnet base 1, preventing deformation or damage to the guide posts 11 due to excessive localized stress, thus significantly improving the brake's load-bearing capacity and durability.

[0066] To ensure smooth movement and improve braking accuracy: the circumferentially distributed guide posts 11 provide multiple guiding references for the movement of the armature 6, effectively limiting the lateral displacement and rotation of the armature 6, enabling it to move smoothly along the axial direction. This precise guiding effect ensures that the trajectory of the armature 6 is consistent with each movement, keeping the contact position and pressure between the friction pad 7 and the brake disc 9 stable, thereby improving braking accuracy and repeatability, and meeting the needs of applications with high braking performance requirements.

[0067] Armature 6 is made of ferromagnetic material.

[0068] The advantages of the above settings are:

[0069] Excellent magnetic permeability: Ferromagnetic materials have high magnetic permeability, which allows the magnetic field generated by the electromagnetic coil 3 to pass more concentratedly through the armature 6, enhancing the magnetic flux of the magnetic circuit. This means that under the same electromagnetic coil 3 energization, the armature 6 made of ferromagnetic material can be magnetized more effectively, thereby generating a stronger magnetic pull. The stronger magnetic pull ensures that the armature 6 can quickly and forcefully approach the magnet base 1 when subjected to electromagnetic force, achieving reliable separation of the friction plate 7 from the brake disc 9, and ensuring the stability and reliability of the brake in the released state.

[0070] Rapid response electromagnetic force: Ferromagnetic materials respond very quickly to magnetic fields. When the electromagnetic coil 3 is energized or de-energized, the armature 6 can be quickly magnetized or demagnetized, thus achieving rapid switching between braking and releasing states. This rapid response characteristic is crucial for mechanical equipment that requires frequent starts and stops or precise braking control, improving equipment efficiency and control accuracy.

[0071] Ensuring the stability of magnetic pull: Ferromagnetic materials have a strong ability to retain magnetism after magnetization. However, in the design of this electromagnetic brake, when the electromagnetic coil 3 is de-energized, the brake spring 5 needs to push the armature 6 to achieve braking. At this time, the residual magnetism of the ferromagnetic material should be as small as possible to avoid interfering with the braking process. By reasonably selecting the type of ferromagnetic material and performing appropriate treatment, the armature 6 can have good magnetic permeability when energized, generating sufficient magnetic pull, while having very little residual magnetism when de-energized, which will not affect the reset function of the brake spring, thus ensuring the stability and reliability of the braking process.

[0072] Example 3

[0073] In practical applications of stair cranes, this electromagnetic brake can be installed between the drive system and the pedal transmission mechanism of the stair crane to achieve precise control of pedal movement. The specific implementation method is as follows:

[0074] The stair machine mainly consists of a drive motor, a transmission belt, a pedal transmission mechanism, and a control system. The brake disc 9 of the electromagnetic brake is fixedly connected to the main shaft of the stair machine's pedal transmission mechanism, allowing the brake disc 9 to rotate synchronously with the main shaft; the magnet base 1 is fixedly installed on the frame of the stair machine to ensure its stable position.

[0075] When the user starts the stair climber, the control system energizes the electromagnetic coil 3 of the electromagnetic brake. The electromagnetic coil 3 generates a magnetic pull, overcoming the thrust of the brake spring 5 and pulling the armature 6 closer to the magnet base 1. At this time, the friction plate 7 separates from the brake disc 9, allowing the brake disc 9 to rotate freely. The drive motor drives the pedal transmission mechanism via the transmission belt, and the stair climber pedals begin normal operation, allowing the user to exercise.

[0076] During operation, if the user presses the stop button or the stair machine detects an abnormality, the control system will immediately cut off the power to the electromagnetic coil 3. The magnetic pull of the electromagnetic coil 3 disappears, and the brake spring 5 pushes the armature 6 away from the magnet seat 1, causing the friction plate 7 to quickly press against the brake disc 9. Utilizing the friction between the two, the pedal transmission mechanism is quickly braked, stopping the stair machine's pedals from rotating within a short time, ensuring user safety.

[0077] The examples provided in this utility model are not intended to limit the implementation methods. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementation methods, but any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. An electromagnetic brake, characterized by, The device includes a magnet base (1), an electromagnetic coil (3) is embedded in one side of the magnet base (1), multiple sets of brake springs (5) are inserted into one side of the magnet base (1), an armature (6) is provided on one side of the magnet base (1) and connected to the brake springs (5), a guide post (11) connected to the magnet base (1) is movably inserted into the armature (6), multiple sets of friction plates (7) are connected to the side of the armature (6) away from the magnet base (1), and a brake disc (9) is connected to the armature (6) through the friction plates (7). When the electromagnetic coil (3) is energized, the electromagnetic coil (3) generates a magnetic force to pull the armature (6) closer to the magnet base (1), and the friction plates (7) separate from the brake disc (9).

2. An electromagnetic brake according to claim 1, wherein The magnet base (1) has a mounting groove (2) on one side that is adapted to the shape of the electromagnetic coil (3), and the electromagnetic coil (3) is installed in the mounting groove (2).

3. An electromagnetic brake according to claim 1, wherein Multiple sets of circumferentially distributed braking springs (5) are inlaid and connected to one side of the magnet base (1).

4. An electromagnetic brake according to claim 3, wherein The magnet base (1) has multiple sets of spring mounting holes (4) that correspond one-to-one with multiple sets of brake springs (5). One end of the brake spring (5) is positioned and inserted into the corresponding spring mounting hole (4), and the other end of the brake spring (5) is fixedly connected to the armature (6).

5. An electromagnetic brake according to claim 4, wherein The braking spring (5) is a helical compression spring.

6. An electromagnetic brake according to claim 1, wherein The magnet base (1) has a positioning hole (10), the armature (6) has a guide hole (8) corresponding to the positioning hole (10), and the guide post (11) passes through the guide hole (8) and is positioned and inserted into the positioning hole (10).

7. An electromagnetic brake according to claim 6, wherein The guide post (11) is provided with at least two posts, which are evenly distributed along the circumference of the armature (6).

8. An electromagnetic brake according to claim 1, wherein The armature (6) is made of ferromagnetic material.

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