Electromagnetic brake with failure detection

Abstract

The utility model discloses a kind of electromagnetic brake with failure detection, it is related to electromagnetic braking equipment technical field, including brake mechanism, magnetic induction device and electromagnetic detection controller;Brake mechanism contains magnetic conductive shell, electromagnet coil, armature sheet, friction plate and base, magnetic conductive shell one end is connected with the base fixed with vehicle body, there is interval space between the two;Electromagnet coil is fixed in magnetic conductive shell, armature sheet sliding is located in interval space, the elastic component on magnetic conductive shell can push armature sheet to the direction of far from magnetic conductive shell;Friction plate is located in the interval space between armature sheet and base, and rotates synchronously with wheel, base is provided with through avoiding hole;The magnetic flux detection head detection end of magnetic induction device passes through the center hole of magnetic conductive shell and enters the center hole of armature sheet;Electromagnetic detection controller is connected with communication, and with vehicle ECU communication connection of magnetic induction device, electromagnet coil.It can realize the real-time monitoring of armature sheet state, enhance early warning and protection mechanism, improve braking reliability.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic braking equipment technology, and in particular to an electromagnetic brake with failure detection. Background Technology

[0002] Electromagnetic brakes, as a core braking device for low-speed vehicles (especially off-road vehicles), rely on the interaction between an electromagnetic coil and an armature plate. When energized, the electromagnetic coil generates a magnetic field that attracts the armature plate, causing it to separate from the brake disc and releasing the brake. When de-energized, the magnetic field disappears, and the armature plate, under the force of a spring, presses against the brake disc, generating braking force. However, traditional electromagnetic brakes have a key drawback: the controller only determines whether the brake is released based on the "energized / de-energized" state and cannot sense the actual position of the armature plate in real time.

[0003] In practical use, low-speed vehicles are often in off-road conditions and are susceptible to mechanical vibration (road bumps, engine vibration), high-temperature environments (prolonged operation causing component thermal deformation and magnetic attenuation), or external impacts (collisions, sudden stops, impacts from heavy loads). This can cause the armature plate to abnormally fall off the electromagnetic coil's engagement position. At this time, the controller still mistakenly believes that the brake is in the "brake released" state, but the armature plate has already approached or contacted the brake disc, causing the friction pads to rub against the brake disc at high speed. This generates a large amount of heat in a short time, causing the friction pads to burn out or even the brakes to fail, seriously threatening the safety of the vehicle and its occupants.

[0004] In existing technologies, improvements to electromagnetic brakes mostly focus on optimizing coil heat dissipation, enhancing the magnetic force of the armature plate, or improving the wear resistance of the friction plate. None of these have solved the core problem of "real-time detection of the armature plate position" and lack an early warning and protection mechanism for abnormal armature plate drop, thus failing to fundamentally avoid the aforementioned safety hazards. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic brake with failure detection to solve the problems existing in the prior art, realize real-time monitoring of the armature plate status, enhance the early warning and protection mechanism, and improve braking reliability.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an electromagnetic brake with failure detection, including a braking mechanism, a magnetic induction device, and an electromagnetic detection controller. The braking mechanism includes a magnetically conductive housing, an electromagnetic coil, an armature plate, a friction plate, and a base. One end of the magnetically conductive housing is fixedly connected to the base, which is used for fixed connection to a vehicle body, and there is a gap between the magnetically conductive housing and the base. The electromagnetic coil is fixedly disposed within the magnetically conductive housing. The armature plate is slidably disposed within the gap along the axis of the magnetically conductive housing, and an elastic component is provided on the magnetically conductive housing. The elastic component can push the armature plate away from the magnetically conductive housing, and in its natural state, the elastic component can... The armature plate maintains a distance from the corresponding end of the magnetic housing; the friction plate is located in the space between the armature plate and the base, the base has a through clearance hole for the drive shaft to pass through, and the friction plate is used to rotate synchronously with the wheel; the magnetic housing, the electromagnetic coil, and the armature plate are all provided with through central holes; the magnetic induction device has a magnetic flux detection head, the detection end of the magnetic flux detection head passes through the central hole of the magnetic housing and is located in the central hole of the armature plate; the electromagnetic detection controller is communicatively connected to the magnetic induction device and the electromagnetic coil, and the electromagnetic detection controller is used to communicate with the vehicle's ECU.

[0007] Preferably, the elastic component includes a plurality of springs; the magnetic housing is provided with a plurality of mounting holes on the end face near the base, each mounting hole is circumferentially distributed around the axis of the magnetic housing, and a spring is inserted into each mounting hole, with one end of the spring near the base abutting against the armature piece.

[0008] Preferably, a plurality of support tubes are provided between the magnetic housing and the base, and each support tube is circumferentially distributed around the axis of the magnetic housing; a first mounting hole is provided on the magnetic housing corresponding to the position of the support tube; a second mounting hole is provided on the base corresponding to the position of the support tube, and a connecting fastener is provided in the second mounting hole, the connecting fastener being sequentially fixed through the second mounting hole, the support tube and the first mounting hole.

[0009] Preferably, guide grooves are provided on the circumferential sidewall of the armature piece corresponding to the position of the support tube; the support tube is located in the guide groove.

[0010] Preferably, the electromagnetic detection controller can be configured to set a leakage magnetic field threshold. When the leakage magnetic field intensity detected by the magnetic induction device exceeds the leakage magnetic field threshold, the electromagnetic detection controller can control the electromagnetic coil to be de-energized.

[0011] Preferably, the electromagnetic leakage magnetic threshold of the electromagnetic detection controller is 30mT; and the response time of the electromagnetic detection controller is ≤10ms.

[0012] Preferably, the magnetic induction device is a Hall sensor, a magnetoresistive sensor, or a fluxgate sensor.

[0013] Preferably, the armature plate is made of silicon steel and has a thickness of 2mm to 3mm.

[0014] Preferably, the elastic component can exert a maximum thrust of 50N to 80N on the armature plate.

[0015] Preferably, the gap between the armature plate and the friction plate is 0.1mm to 0.3mm.

[0016] The present invention achieves the following technical advantages over the prior art: This invention provides an electromagnetic brake with failure detection. The brake mechanism features through-holes in the magnetic housing, electromagnetic coil, and armature, providing a precise mounting channel for the magnetic flux detection head of the magnetic induction device. The detection end passes through the central hole of the magnetic housing and is located within the central hole of the armature. This arrangement ensures the detection head can directly monitor the change in magnetic flux as the armature slides along the axis of the magnetic housing. When the electromagnetic coil is energized and attracts the armature, the distance between the armature and the end of the magnetic housing decreases, reducing magnetic reluctance and increasing magnetic flux. Conversely, when the armature falls due to mechanical vibration, high-temperature magnetic attenuation, or abnormal external impact, the distance between it and the magnetic housing increases, resulting in a stronger leakage magnetic signal. This allows the magnetic induction device to convert the actual position of the armature into a quantifiable electrical signal. The electromagnetic detection controller acquires this magnetic flux signal in real time through a communication connection with the magnetic induction device and combines it with communication with the electromagnetic coil to obtain its flux. The electrical state detection system changes the traditional controller's reliance on energization to determine brake release. When a contradictory situation arises where the electromagnetic coil is energized but the magnetic flux signal indicates abnormal displacement of the armature, the electromagnetic detection controller can immediately identify the fault and trigger warning or protective braking measures through communication with the vehicle's ECU. Simultaneously, the elastic components of the braking mechanism maintain a distance between the armature and the magnetic housing in its natural state, ensuring normal braking function when power is off. The fixed connection and spacing design between the magnetic housing and the base provide a stable structural foundation for the sliding of the armature and the installation of the friction pads (rotating synchronously with the wheel). The through-hole in the base ensures the normal operation of the drive shaft. The entire solution, without affecting the original braking function of the braking mechanism, achieves accurate warning and protection against abnormal armature drop through real-time magnetic flux detection and intelligent control closed loop, fundamentally avoiding safety hazards such as friction pad burnout and brake failure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the electromagnetic brake with failure detection provided by this utility model; Figure 2 A schematic diagram of the normal working state of the electromagnetic brake with failure detection provided by this utility model; Figure 3 This is a schematic diagram of the electromagnetic brake with failure detection provided by this utility model in the state of the armature plate falling off. In the diagram: 1-Magnetic induction device; 2-Magnetic housing; 3-Electromagnetic coil; 4-Support tube; 5-Armature plate; 6-Friction plate; 7-Base; 8-Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The purpose of this invention is to provide an electromagnetic brake with failure detection to solve the problems existing in the prior art, realize real-time monitoring of the armature plate status, enhance the early warning and protection mechanism, and improve braking reliability.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment provides an electromagnetic brake with failure detection, mainly applied to low-speed vehicles (driving speed ≤30km / h, including agricultural vehicles, lawnmowers, golf carts, or small engineering vehicles, etc.). Figures 1-3As shown, the system includes a braking mechanism, a magnetic induction device 1, and an electromagnetic detection controller. The braking mechanism includes a magnetic housing 2, an electromagnetic coil 3, an armature plate 5, a friction plate 6, and a base 7. One end of the magnetic housing 2 is fixedly connected to the base 7, which is used to fix the magnetic housing 2 to the vehicle body, and there is a gap between the magnetic housing 2 and the base 7. The electromagnetic coil 3 is fixedly installed inside the magnetic housing 2. The armature plate 5 is slidably installed in the gap along the axis of the magnetic housing 2, and an elastic component is provided on the magnetic housing 2. The elastic component can push the armature plate 5 away from the magnetic housing 2, and in its natural state, the elastic component can make the armature plate 5 and the magnetic housing 2... The ends should maintain a distance; the friction plate 6 is located in the space between the armature plate 5 and the base 7, and the base 7 has a through clearance hole for the drive shaft to pass through, and the friction plate 6 is used to rotate synchronously with the wheel; the magnetic housing 2, the electromagnetic coil 3 and the armature plate 5 are all provided with through central holes; the magnetic induction device 1 has a magnetic flux detection head, and the detection end of the magnetic flux detection head passes through the central hole of the magnetic housing 2 and is located in the central hole of the armature plate 5 (the magnetic induction device 1 can be fixed on the magnetic housing 2); the electromagnetic detection controller is communicatively connected to the magnetic induction device 1 and the electromagnetic coil 3, and the electromagnetic detection controller is used to communicate with the vehicle's ECU.

[0023] The braking mechanism incorporates through-holes in the magnetic housing 2, electromagnetic coil 3, and armature plate 5, providing a precise mounting channel for the magnetic flux detection head of the magnetic induction device 1. The detection end passes through the central hole of the magnetic housing 2 and is located within the central hole of the armature plate 5. This arrangement ensures the detection head can directly monitor the change in magnetic flux as the armature plate 5 slides along the axis of the magnetic housing 2. When the electromagnetic coil 3 is energized and attracts the armature plate 5, the distance between the armature plate 5 and the end of the magnetic housing 2 decreases, reducing magnetic circuit resistance and increasing magnetic flux. Conversely, when the armature plate 5 falls due to mechanical vibration, high-temperature magnetic attenuation, or abnormal external impact (i.e., it should have been attracted but actually disengaged), the distance between it and the magnetic housing 2 increases, resulting in a stronger leakage magnetic signal. This allows the magnetic induction device 1 to convert the actual position of the armature plate 5 into a quantifiable electrical signal. The electromagnetic detection controller acquires this magnetic flux signal in real time through a communication connection with the magnetic induction device 1 and combines it with communication with the electromagnetic coil 3 to obtain its flux. The electrical state change alters the traditional controller's reliance solely on energization to determine brake release. When a contradictory situation arises where the electromagnetic coil 3 is energized but the magnetic flux signal indicates abnormal displacement of the armature plate 5, the electromagnetic detection controller can immediately identify the fault and trigger warning or protective braking measures through communication with the vehicle's ECU. Simultaneously, the elastic components of the braking mechanism maintain a distance between the armature plate 5 and the magnetic housing 2 in its natural state, ensuring normal braking function when power is off. The fixed connection and spacing design between the magnetic housing 2 and the base 7 provide a stable structural foundation for the sliding of the armature plate 5 and the installation of the friction plate 6 (rotating synchronously with the wheel). The through-hole of the base 7 ensures the normal operation of the drive shaft. The entire solution, without affecting the original braking function of the braking mechanism, achieves accurate warning and protection against abnormal falling of the armature plate 5 through real-time magnetic flux detection and intelligent control closed loop, fundamentally avoiding safety hazards such as burnt friction plate 6 and brake failure.

[0024] Specifically, the electromagnetic brake with failure detection in this embodiment can also be made by simply adding a magnetic induction device 1 (such as a Hall sensor) and a simple controller to a traditional electromagnetic brake, without significantly altering the original mechanical structure. This reduces the modification cost and makes it easy to promote in existing vehicles.

[0025] The following are the specifications regarding the braking mechanism: Specifically, the following are the relevant settings for the magnetic housing 2: Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1As shown, a plurality of support tubes 4 are provided between the magnetic housing 2 and the base 7, and each support tube 4 is circumferentially distributed around the axis of the magnetic housing 2; a first mounting hole is provided on the magnetic housing 2 at the position corresponding to the support tube 4; a second mounting hole is provided on the base 7 at the position corresponding to the support tube 4, and a connecting fastener is provided in the second mounting hole, and the connecting fastener is sequentially fixed through the second mounting hole, the support tube 4 and the first mounting hole.

[0026] Specifically, the following are the settings instructions for electromagnetic coil 3: Specifically, when the electromagnetic coil 3 is energized, it generates a magnetic field to attract the armature plate 5, causing it to separate from the friction plate 6 and release the brake; when the power is off, the magnetic field disappears, and the armature plate 5 presses against the friction plate 6 under the action of the elastic components (i.e., each spring 8) to implement braking.

[0027] Specifically, the electromagnetic coil 3 has a rated voltage of 24V and a power of 30W, and is compatible with the 12V / 24V power supply system of agricultural vehicles.

[0028] Specifically, here are the settings instructions for the elastic component: Specifically, the elastic component is used to provide the armature plate 5 with the elastic force to press the friction plate 6 when the power is off.

[0029] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 As shown, the elastic component includes multiple springs 8; multiple mounting holes are provided on the end face of the magnetic housing 2 near the base 7, each mounting hole is circumferentially distributed around the axis of the magnetic housing 2, and a spring 8 is inserted into each mounting hole, with one end of the spring 8 near the base 7 abutting against the armature piece 5.

[0030] In the optional solutions of this embodiment, it is more preferred that the elastic component can exert a maximum thrust of 50N to 80N on the armature plate 5.

[0031] Specifically, the following are the settings instructions for armature plate 5: Specifically, the armature plate 5 separates from the friction plate 6 under the action of electromagnetic force (releases the brake), and should be stably attached to one side of the electromagnetic coil 3 under normal conditions; if it falls off due to vibration / high temperature / impact, it will fall away from the electromagnetic coil 3 and fall to the side closer to the friction plate 6.

[0032] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 As shown, guide grooves are provided on the circumferential sidewall of the armature plate 5 at the positions corresponding to the support tube 4; the support tube 4 is located in the guide groove.

[0033] In the optional solutions of this embodiment, the armature plate 5 is preferably made of silicon steel and has a thickness of 2mm to 3mm.

[0034] In the optional solutions of this embodiment, it is more preferred that the gap between the armature plate 5 and the friction plate 6 is 0.1mm~0.3mm.

[0035] Specifically, the following are the settings instructions for friction plate 6: Specifically, the friction plate 6 is linked to the vehicle wheel, and braking and releasing are implemented by pressing or releasing the armature plate 5; braking force is generated when the armature plate 5 contacts the friction plate 6.

[0036] Specifically, the friction pad 6 is integrated with the rear wheel brake drum of the agricultural vehicle, and the friction pad 6 is made of metal / composite material.

[0037] The following are the settings instructions for the magnetic induction device 1 and the electromagnetic detection controller: In the optional solutions of this embodiment, it is more preferred that the magnetic induction device 1 is a Hall sensor, a magnetoresistive sensor or a fluxgate sensor.

[0038] Specifically, the magnetic induction device 1 can be a linear Hall sensor, installed on the outer support of the electromagnetic coil 3, 3mm-5mm away from the edge of the armature piece 5, with a detection range of 0-100mT.

[0039] Specifically, the magnetic induction device 1 is installed inside the electromagnetic brake near the magnetic circuit area between the armature plate 5 and the electromagnetic coil 3 (i.e., the area between the electromagnetic coil 3 and the armature plate 5) to detect the change in magnetic field strength in this area in real time (non-contact detection of leakage magnetic signal, focusing on detecting the leakage magnetic signal caused by the change in magnetic gap due to the armature plate 5 falling to the side of the friction plate 6).

[0040] Specifically, the electromagnetic detection controller is based on an 8-bit microcontroller, with a preset leakage magnetic threshold of 30mT and a response time of ≤10ms.

[0041] Specifically, the electromagnetic detection controller is energized and communicates with the magnetic induction device 1 and the electromagnetic coil 3. It is used to receive the leakage magnetic signal detected by the magnetic induction device 1 and control the power supply status of the electromagnetic brake (power failure protection) according to the preset logic.

[0042] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 As shown, the electromagnetic detection controller can be set with a leakage magnetic threshold. When the leakage magnetic intensity detected by the magnetic induction device 1 exceeds the leakage magnetic threshold, the electromagnetic detection controller can control the electromagnetic coil 3 to be de-energized.

[0043] In the optional solutions of this embodiment, it is more preferred that the leakage magnetic threshold of the electromagnetic detection controller is 30mT; and the response time of the electromagnetic detection controller is ≤10ms.

[0044] Specifically, the leakage magnetic field threshold is calibrated based on the electromagnetic braking magnetic field distribution of a specific vehicle model (determined by experimentally measuring the leakage magnetic field intensity under normal engagement / disengagement conditions; for example, the typical threshold for agricultural vehicles is 25mT-35mT).

[0045] Specifically, the response time of the electromagnetic detection controller must be ≤10ms to ensure a rapid warning the moment the armature plate 5 falls, thus preventing the friction plate 6 from being damaged or failing due to prolonged friction.

[0046] Regarding other related settings: Working principle and control logic: Normal operating conditions: ① When the brake is released by energizing: The electromagnetic coil 3 generates a strong magnetic field, and the armature plate 5 is stably attracted to one end close to the electromagnetic coil 3 (separated from the friction plate 6). At this time, there is no magnetic gap or the gap is extremely small between the armature plate 5 and the electromagnetic coil 3. The leakage magnetic signal intensity detected by the magnetic induction device 1 is lower than the preset threshold (e.g., ≤20mT). The electromagnetic detection controller determines that the armature plate 5 is in the "correctly engaged position," and the vehicle can drive normally. ② When the brake is applied by de-energizing: ① The electromagnetic coil 3 is de-energized, the magnetic field disappears, and the armature plate 5 presses against the friction plate 6 under the action of the spring 8. The detection area of ​​the magnetic induction device 1 is based on the de-energized state of the electromagnetic coil 3 and determines it to be a normal braking state. (Or, if necessary, based on the determination of the de-energized state of the electromagnetic coil 3, if there is no abnormal leakage magnetic field or the leakage magnetic signal meets the normal operating leakage magnetic field, it is determined to be a normal braking state.) Abnormal state (armature plate 5 falls off): When the electromagnetic brake is energized, the armature plate 5 should be attracted and kept in the position separated from the friction plate 6. However, due to vibration / high temperature / impact, it falls from the attracted position to the vicinity of the friction plate 6 surface. A magnetic gap (e.g., 0.5-2mm) is formed between the armature plate 5 and the electromagnetic coil 3. The magnetic field leaks at this gap (generating leakage magnetic field). The magnetic induction device 1 detects that the leakage magnetic field signal intensity exceeds the preset threshold (e.g., ≥30mT). At this time, after receiving the leakage magnetic field signal, the electromagnetic detection controller determines that the armature plate 5 is in an "abnormal falling state" (should be attracted but actually falls off) and immediately performs the following protection actions: ① Trigger alarm: The electromagnetic detection controller transmits the signal to the vehicle ECU, and the vehicle brake status indicator flashes, the buzzer sounds, or the vehicle instrument panel reports an error to notify the driver that the braking system is abnormal; ② Link vehicle control: Send a "brake abnormality" signal to the vehicle main control system to limit the vehicle's power output (e.g., prohibit acceleration) or force deceleration to avoid dangerous driving due to brake failure.

[0047] Workflow: ① Normal brake release: When the driver starts the vehicle or releases the parking brake, the electromagnetic coil 3 is energized, and the armature piece 5 is attracted to the end of the electromagnetic coil 3 (separated from the friction piece 6). The magnetic induction device 1 detects a leakage magnetic signal of 15mT (below the threshold). The controller determines that the position of the armature piece 5 is normal and the vehicle can drive normally. ② Abnormal Drop Detection: During vehicle operation, if the armature plate 5 falls from the engagement position to near the surface of the friction plate 6 due to road bumps, a 1mm-1.5mm magnetic gap will be formed between the armature plate 5 and the electromagnetic coil 3 (e.g., Figure 3 At the gap indicated in the middle), the magnetic induction device 1 detected a leakage magnetic signal of 45mT (exceeding the threshold). The electromagnetic detection controller detected the abnormality within 10ms and triggered the brake status indicator to flash red.

[0048] ③ Interlocking protection: The electromagnetic detection controller can send a "brake abnormality" signal to the agricultural vehicle ECU via the CAN bus to limit the engine power output (such as prohibiting increased throttle) and prevent the driver from continuing to accelerate without knowing it, which would lead to an increased risk.

[0049] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electromagnetic brake with failure detection, characterized in that: Includes braking mechanism, magnetic induction device and electromagnetic detection controller; The braking mechanism includes a magnetic housing, an electromagnetic coil, an armature plate, a friction plate, and a base. One end of the magnetic housing is fixedly connected to the base, which is used to fix the magnetic housing to the vehicle body, and there is a gap between the magnetic housing and the base. The electromagnetic coil is fixedly disposed within the magnetic housing. The armature plate is slidably disposed within the gap along the axis of the magnetic housing, and an elastic component is provided on the magnetic housing. The elastic component can push the armature plate away from the magnetic housing, and in its natural state, the elastic component can maintain a distance between the corresponding ends of the armature plate and the magnetic housing. The friction plate is located within the gap between the armature plate and the base. The base has a through-hole for the drive shaft to pass through, and the friction plate is used to rotate synchronously with the wheel. The magnetic housing, the electromagnetic coil, and the armature plate are all provided with a through-hole in the center; The magnetic induction device has a magnetic flux detection head, the detection end of which passes through the central hole of the magnetically conductive housing and is located inside the central hole of the armature piece; The electromagnetic detection controller is communicatively connected to both the magnetic induction device and the electromagnetic coil, and the electromagnetic detection controller is also used to communicate with the vehicle's ECU.

2. The electromagnetic brake with failure detection according to claim 1, characterized in that: The elastic component includes multiple springs; The magnetic housing has multiple mounting holes on its end face near the base. Each mounting hole is circumferentially distributed around the axis of the magnetic housing. A spring is inserted into each mounting hole, and the end of the spring near the base abuts against the armature plate.

3. The electromagnetic brake with failure detection according to claim 1, characterized in that: Multiple support tubes are provided between the magnetic conductive housing and the base, and each support tube is circumferentially distributed around the axis of the magnetic conductive housing; Each of the magnetically conductive housings has a first mounting hole corresponding to the position of the support tube; each of the bases has a second mounting hole corresponding to the position of the support tube. A connecting fastener is provided in the second mounting hole, and the connecting fastener is sequentially fixed through the second mounting hole, the support tube, and the first mounting hole.

4. The electromagnetic brake with failure detection according to claim 3, characterized in that: Guide grooves are provided on the circumferential sidewalls of the armature plate corresponding to the positions of the support tubes; the support tubes are located within the guide grooves.

5. The electromagnetic brake with failure detection according to claim 1, characterized in that: The electromagnetic detection controller can be set with a leakage magnetic field threshold. When the leakage magnetic field intensity detected by the magnetic induction device exceeds the leakage magnetic field threshold, the electromagnetic detection controller can control the electromagnetic coil to be de-energized.

6. The electromagnetic brake with failure detection according to claim 5, characterized in that: The electromagnetic detection controller has a leakage magnetic field threshold of 30mT and a response time of ≤10ms.

7. The electromagnetic brake with failure detection according to claim 1, characterized in that: The magnetic induction device is a Hall sensor, a magnetoresistive sensor, or a fluxgate sensor.

8. The electromagnetic brake with failure detection according to claim 1, characterized in that: The armature plate is made of silicon steel and has a thickness of 2mm to 3mm.

9. The electromagnetic brake with failure detection according to claim 1, characterized in that: The elastic component can exert a maximum thrust of 50N to 80N on the armature plate.

10. The electromagnetic brake with failure detection according to claim 1, characterized in that: The gap between the armature plate and the friction plate is 0.1mm to 0.3mm.

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