band brake

Abstract

The application provides a holding brake. The holding brake is arranged in a joint of a robot and comprises a fixed frame body for being fixed at a first end of the joint, an electromagnet arranged in an opening of the fixed frame body facing a second end, a shaft body mounted at the second end of the fixed frame body, a brake gear disc slidably arranged on the outer periphery of the shaft body, an elastic member arranged between the fixed frame body and the brake gear disc, and a fixed gear disc for being fixed at the second end of the joint. The brake gear disc and the shaft body are configured to limit relative rotation. When the electromagnet is powered on, the brake gear disc is attracted to the electromagnet and separated from the fixed gear disc, thereby releasing the locking of the freedom of the joint. When the electromagnet is powered off, the brake gear disc is engaged with the fixed gear disc under the action of the elastic member, and the freedom of the joint is locked. The application realizes the engagement of the brake gear disc and the fixed gear disc when the robot is powered off, improves the reliability of the holding brake of the joint, and can lock the motion state of the robot at the moment when the robot is powered off.

Description

Technical Field

[0001] This application relates to the field of braking device technology, and more specifically, to a holding brake. Background Technology

[0002] Braking of joints plays a crucial role in human-robot collaborative robots, directly affecting the robot's motion control, precise positioning, and safety performance.

[0003] Current brake systems typically consist of a brake disc (or brake drum), brake pads, a spring mechanism, and an electromagnet. When energized, the electromagnetic force overcomes the spring pressure, releasing the brake; when de-energized, the spring force pushes the brake pads to press against the brake disc, achieving braking. It is evident that current brake systems are mostly friction brakes. Excessive braking cycles or overheating of the brake pads can lead to pad deformation, affecting the brake's holding effect. Utility Model Content

[0004] This application addresses the shortcomings of existing methods by proposing a holding brake to solve the technical problem that excessive braking or overheating of the brake pads can lead to brake pad deformation, affecting the holding effect of the brake.

[0005] This application provides a brake device, disposed within a robot joint, comprising:

[0006] A fixed frame, the first end of which is configured to be fixed to the first end of the joint, and an opening is provided in the fixed frame facing the second end;

[0007] An electromagnet is disposed within the opening;

[0008] The shaft is installed at the second end of the fixed frame;

[0009] The brake disc is slidably disposed on the outer periphery of the shaft body and is configured to restrict relative rotation with respect to the shaft body;

[0010] An elastic element is disposed between the fixed frame and the brake disc;

[0011] A fixed toothed disc is configured to be fixed to the second end of the joint;

[0012] When the electromagnet is energized, the brake toothed disc attracts the electromagnet and the fixed toothed disc separates, releasing the lock on the joint's degree of freedom; when the electromagnet is de-energized, the brake toothed disc engages with the fixed toothed disc under the action of the elastic element, and the joint's degree of freedom is locked.

[0013] Optionally, the brake disc includes a main body and an annular first tooth portion disposed on the outer edge of the main body, the first tooth portion protruding from the side of the main body, such that the main body and the first tooth portion form a stepped structure.

[0014] Optionally, the fixed gear disc includes a fixed portion and a second tooth portion, wherein the second tooth portion is disposed on the side of the fixed portion near the brake gear disc;

[0015] When the first tooth meshes with the second tooth, there is an adjustment gap between the main body and the fixing part, and the fixing part is provided with an adjustment hole that passes through the fixing part along the axial direction of the fixing toothed disc.

[0016] Optionally, at least two adjustment holes are provided, and the at least two adjustment holes are arranged symmetrically with respect to the axis of the fixed gear plate.

[0017] Optionally, the adjustment hole is a threaded hole.

[0018] Optionally, the brake disc is keyed to the shaft, and the outer wall of the shaft has a keyway extending axially.

[0019] Optionally, the shaft body is provided with a stop member, which is disposed at both ends of the keyway.

[0020] Optionally, the shaft, the electromagnet, and the fixed frame are all coaxially arranged. The electromagnet has a cylindrical structure and is arranged in the opening at the periphery of the fixed frame. The shaft is installed at the center of the fixed frame, such that the electromagnet is arranged around the shaft.

[0021] Optionally, the shaft body has an internal mounting hole extending along the axis, and the shaft body is connected to the end face of the second end of the fixed frame body by bolts.

[0022] Optionally, a groove is provided in the main body facing one end of the fixed frame, and the elastic element is disposed in the groove. When the brake disc is attracted to the electromagnet, the elastic element is fully abutted in the groove.

[0023] The elastic element includes a disc spring.

[0024] The beneficial technical effects of the technical solutions provided in this application include:

[0025] In this embodiment of the application, when it is necessary to lock all joints of the robot or a specific joint equipped with the brake device of this application, the power supply to the robot or the brake device in the specific joint can be disconnected, so that the brake disc and the fixed disc engage and lock, instantly locking the current activity state of the robot or the specific joint, preventing the robot from falling over at the moment of power failure, and playing a role in protecting the robot; the locking mode of the disc engagement can effectively reduce the probability of deformation or even failure after multiple locking, thereby improving the reliability of joint brake braking and extending the service life of the brake device;

[0026] Moreover, the brake disc can act as an iron core, engaging with the electromagnet when it is energized, allowing the joints to move freely. It can also act as a braking component, engaging with the fixed disc under the elastic force of the elastic element when the electromagnet is de-energized, thus locking the robot's current state of motion. The dual function of the brake disc simplifies the structure of the brake, reduces its size and weight, and consequently reduces the overall size and weight of the robot, improving the flexibility of the robot's joints and enhancing its performance.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a holding brake provided in an embodiment of this application;

[0030] Figure 2 A cross-sectional structural schematic diagram of a brake in the brake-locked state provided in an embodiment of this application;

[0031] Figure 3 This is a cross-sectional structural diagram of a brake in the released state, provided as an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10-Fixed frame; 11-Opening;

[0034] 20 - Electromagnet; 21 - Power supply wiring;

[0035] 30 - Shaft body; 31 - Keyway; 32 - Mounting hole;

[0036] 40 - Brake disc; 41 - Main body; 411 - Groove; 42 - First tooth;

[0037] 50 - Elastic element;

[0038] 60 - Fixed gear plate; 61 - Fixed part; 611 - Adjustment hole; 612 - Fixed hole; 62 - Second tooth;

[0039] 70 - Adjusting clearance; 80 - Stop; 90 - Bolt. Detailed Implementation

[0040] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0043] In related technologies, a brake caliper typically consists of a brake disc (or brake drum), brake pads, a spring mechanism, and an electromagnet. When energized, the electromagnetic force overcomes the spring pressure, releasing the brake; when de-energized, the spring force pushes the brake pads to press against the brake disc, achieving braking. Currently, most brake calipers are friction brakes. Excessive braking cycles or overheating of the brake pads can cause deformation, affecting the brake's holding effect.

[0044] In order to solve the technical problem that the brake pads may deform when the braking frequency is too high or the brake pads are overheated, thus affecting the braking effect of the brake, this application provides a new type of brake.

[0045] Reference Figures 1-3 The brake device of this application embodiment includes a fixed frame 10, an electromagnet 20, a shaft 30, a brake disc 40, an elastic element 50, and a fixed disc 60.

[0046] The first end of the fixed frame 10 is configured to be fixed to the first end of the joint, and an opening 11 facing the second end is provided inside the fixed frame 10. An electromagnet 20 is disposed within the opening 11. A shaft 30 is mounted on the second end of the fixed frame 10, and a brake disc 40 is slidably disposed on the outer periphery of the shaft 30 and configured to restrict relative rotation with the shaft 30. An elastic element 50 is disposed between the fixed frame 10 and the brake disc 40, and a fixed disc 60 is configured to be fixed to the second end of the joint.

[0047] When the electromagnet 20 is energized, the brake toothed disc 40 attracts the electromagnet 20 and separates from the fixed toothed disc 60, releasing the lock on the joint's degree of freedom; when the electromagnet 20 is de-energized, the brake toothed disc 40 engages with the fixed toothed disc 60 under the action of the elastic element 50, and the joint's degree of freedom is locked.

[0048] In this embodiment, when it is necessary to lock all joints of the robot or a specific joint equipped with the brake device described herein, the power supply to the robot or the brake device in the specific joint can be disconnected, causing the brake disc 40 and the fixed disc 60 to engage and lock, instantly locking the current activity state of the robot or the specific joint. This prevents the robot from falling over at the moment of power failure, thus protecting the robot. The locking mode of the gear disc engagement can effectively reduce the probability of deformation or even failure after multiple locking, thereby improving the reliability of joint brake braking and extending the service life of the brake device.

[0049] Moreover, the brake disc 40 can act as an iron core, engaging with the electromagnet 20 when it is energized, allowing the joint to move freely. It can also act as a brake, engaging with the fixed disc 60 under the elastic force of the elastic element 50 when the electromagnet 20 is de-energized, to lock the robot's current state of motion. The dual function of the brake disc 40 simplifies the structure of the brake, reduces its size and weight, and consequently reduces the overall size and weight of the robot, improving the flexibility of the robot's joints and enhancing the robot's performance.

[0050] Optionally, refer to Figures 2-3 The brake disc 40 includes a main body 41 and a first tooth 42 in the shape of an annular shape disposed on the outer edge of the main body 41. The first tooth 42 protrudes from the side of the main body 41, so that the main body 41 and the first tooth 42 form a stepped structure.

[0051] In this application, the first tooth 42 is used to mesh with the fixed toothed disc 60. By designing the first tooth 42 as an annular ring surrounding the outer edge of the main body 41, the weight of the brake toothed disc 40 can be reduced, and the speed of the brake toothed disc 40 sliding along the shaft 30 and engaging with the electromagnet 20 when the electromagnet 20 is energized can be increased. This can improve the response speed of the brake in this application and enable instantaneous locking of the robot's active state when the power is off.

[0052] Optionally, refer to Figures 2-3 The fixed gear disc 60 includes a fixed part 61 and a second tooth part 62, with the second tooth part 62 disposed on the side of the fixed part 61 near the brake gear disc 40. When the first tooth part 42 meshes with the second tooth part 62, there is an adjustment gap 70 between the main body part 41 and the fixed part 61, and an adjustment hole 611 is provided on the fixed part 61 that passes through the fixed part 61 along the axial direction of the fixed gear disc 60.

[0053] In this application, the fixing part 61 is used to fix the robot joint to the second end, and the second tooth 62 is used to mesh with the first tooth 42. Since both the brake disc 40 and the fixing disc 60 are configured with stepped structures, when the first tooth 42 meshes with the second tooth 62 of the fixing disc 60, an adjustment gap 70 can be formed between the main body 41 and the fixing part 61. Therefore, by opening an adjustment hole 611 on the fixing part 61 that communicates with the adjustment gap 70, when the robot is powered off, manual adjustment can be performed from the outside of the robot using a tool passing through the adjustment hole 611. This pushes the brake disc 40 away from the fixing disc 60, thereby manually releasing the brake lock state of the robot joint and realizing the function of adjusting the state of the robot joint in the power-off state. After adjustment, the external force on the brake disc 40 is released, and the brake disc 40 re-engages and locks with the fixing disc 60 under the action of the elastic member 50, facilitating manual adjustment of the robot's locked state.

[0054] Optionally, refer to Figures 2-3 The fixing part 61 of the fixed gear disc 60 has a ring-shaped structure with a circular notch in the center. The second tooth 62 is fixed to one side of the fixing part 61 and surrounds the outer periphery of the circular notch. The diameter of the fixing part 61 is larger than the diameter of the main body part 41. A plurality of fixing holes 612 are provided circumferentially around the outer periphery of the fixing part 61 for fixing the fixed gear disc 60 to the second end of the joint. This application only describes the connection between the fixing part 61 and the joint by bolts 90 as an example.

[0055] Optionally, refer to Figures 2-3 The fixed gear disc 60 and the brake gear disc 40 are integrally formed.

[0056] Optionally, refer to Figures 2-3 At least two adjustment holes 611 are provided, and at least two adjustment holes 611 are arranged symmetrically with respect to the axis of the fixed gear plate 60.

[0057] By symmetrically arranging at least two adjustment holes 611 along the fixed gear plate 60, uniform force distribution can be ensured, stress concentration can be reduced, and the stability of manual adjustment can be improved. This application uses an example where four adjustment holes 611 are provided on the fixed part 61 for illustration.

[0058] Optionally, the adjustment hole 611 is a threaded hole.

[0059] In this application, the adjustment hole 611 is designed as a threaded hole, so that by using a screw to cooperate with the adjustment hole 611, the length of the screw end extending into the brake can be adjusted by rotating the screw, thereby gradually pushing the brake disc 40 so that the brake disc 40 and the fixed disc 60 are disengaged and locked.

[0060] Alternatively, in one embodiment, the adjustment hole 611 is a light hole, thereby enabling manual adjustment of the brake disc 40 by sliding the light rod within the adjustment hole 611.

[0061] Optionally, the brake disc 40 is keyed to the shaft 30, and the outer wall of the shaft 30 is provided with a keyway 31 extending axially.

[0062] In this application, the key between the brake disc 40 and the shaft 30 is a sliding key, which is embedded in the keyway 31 of the shaft 30, allowing the brake disc 40 to slide under the guidance of the keyway 31. A mechanical engagement is formed between the keyway 31 and the sliding key, enabling the brake disc 40 and the shaft 30 to rotate synchronously and preventing relative rotation.

[0063] Optionally, refer to Figures 2-3 The shaft body 30 is provided with a stop 80, which is located at both ends of the keyway 31.

[0064] By setting stoppers 80 at both ends of the keyway, excessive movement of the brake disc 40 can be avoided, and hard contact between the brake disc 40 and the electromagnet 20 or the fixed disc 60 can be avoided when the electromagnet 20 is energized or de-energized, thus preventing damage to the brake disc 40. This ensures the reliability of the brake on the robot joint and extends the service life of the brake device of this application.

[0065] Optionally, refer to Figures 2-3 The stop 80 can be a stop block fixed on the shaft 30, or a stop ring sleeved on the outer periphery of the shaft 30. This application will use the example of a stop ring sleeved on the outer periphery of the shaft 30 for illustration.

[0066] Alternatively, the stop ring can be made of a soft material to avoid hard contact between the brake disc 40 and the stop ring.

[0067] Optionally, refer to Figures 2-3The shaft 30, electromagnet 20 and fixed frame 10 are all coaxially arranged. Electromagnet 20 has a cylindrical structure and is arranged in the opening 11 of the periphery of fixed frame 10. The shaft 30 is installed in the center of fixed frame 10, so that the annular electromagnet 20 is arranged around the shaft 30.

[0068] By designing the electromagnet 20 as a cylindrical structure and arranging it within the opening 11 on the periphery of the fixed frame 10, and installing the shaft 30 at the center of the fixed frame 10, the cylindrical electromagnet 20 is arranged around the shaft 30. This increases the volume of the electromagnet 20 and enhances its electromagnetic attraction force. Consequently, when the electromagnet 20 is energized, a strong attraction force is maintained between the electromagnet 20 and the brake disc 40, ensuring that the robot joints can move freely.

[0069] In this application, by opening an opening 11 facing the second end in the fixed frame 10, when the electromagnet 20 is placed in the opening 11, the end face of one end of the electromagnet 20 is exposed, so that the brake disc 40 can be attracted to the electromagnet 20 under the attraction of the electromagnet 20.

[0070] Optionally, refer to Figures 2-3 The fixed frame 10 also has a lead wire groove, which is connected to the opening 11. The lead wire groove is used to lead out the power supply wire 21 of the electromagnet 20, so as to facilitate the power supply connection on the robot.

[0071] Optionally, refer to Figures 2-3 The shaft body 30 has an internal mounting hole 32 extending along the axis, and the shaft body 30 is connected to the end face of the second end of the fixed frame 10 by bolts 90.

[0072] In this application, the shaft 30 and the center of the fixed frame 10 are detachably connected by bolts 90, which facilitates the installation and removal of the shaft 30 and the fixed frame 10.

[0073] Optionally, refer to Figures 2-3 The main body 41 has a groove 411 facing one end of the fixed frame 10. The elastic element 50 is disposed in the groove 411. When the brake disc 40 is attracted to the electromagnet 20, the elastic element 50 is fully abutted in the groove 411.

[0074] In this application, by providing a groove 411 on the main body 41 of the brake disc 40 and placing one end of the elastic member 50 against the bottom surface of the groove 411, the elastic member 50 can be limited, restricting its radial runout. Furthermore, by providing a groove 411 on the main body 41 for the elastic member 50, when the electromagnet 20 is energized, the brake disc 40 slides along the shaft 30, gradually compressing the elastic member 50 until the brake disc 40 engages with the electromagnet 20. This reduces the space occupied on the shaft 30 and decreases the axial dimension of the brake device of this application.

[0075] Optionally, the elastic element 50 includes a disc spring.

[0076] The beneficial technical effects of the technical solutions provided in this application include:

[0077] In this embodiment, when it is necessary to lock all joints of the robot or a specific joint equipped with the brake of this application, the power supply to the robot or the brake in the specific joint can be disconnected, causing the brake disc 40 and the fixed disc 60 to engage and lock, instantly locking the current activity state of the robot or the specific joint, preventing the robot from falling over at the moment of power failure, and thus protecting the robot. The locking mode of the gear disc engagement can effectively reduce the probability of deformation or even failure after multiple locking, thereby improving the reliability of joint brake braking and extending the service life of the brake. Moreover, the brake disc 40 can act as an iron core, engaging with the electromagnet 20 when the electromagnet 20 is energized, allowing the joint to move freely; and when the electromagnet 20 is de-energized, it can act as a braking component, engaging with the fixed disc 60 under the elastic force of the elastic element 50 to lock the current activity state of the robot. The dual function of the brake disc 40 simplifies the structure of the brake, reduces its size and weight, and thus reduces the overall size and weight of the robot, improving the flexibility of the robot joint movement and enhancing the robot's performance.

[0078] The first tooth 42 is used to mesh with the fixed toothed disc 60. By designing the first tooth 42 as an annular ring surrounding the outer edge of the main body 41, the weight of the brake disc 40 can be reduced, and the speed of the brake disc 40 sliding along the shaft 30 and engaging with the electromagnet 20 when the electromagnet 20 is energized can be increased. This can improve the response speed of the brake of this application and enable instantaneous locking of the robot's active state when the power is off.

[0079] When the first tooth 42 engages with the second tooth 62 of the fixed toothed disc 60, an adjustment gap 70 is formed between the main body 41 and the fixed part 61. Therefore, by opening an adjustment hole 611 on the fixed part 61 that communicates with the adjustment gap 70, when the robot is powered off, manual adjustment can be performed from the outside of the robot by using a tool through the adjustment hole 611 to push the brake toothed disc 40 away from the fixed toothed disc 60, thereby manually releasing the brake lock state of the robot joint and realizing the function of adjusting the state of the robot joint in the power-off state. After the adjustment is completed, the external force on the brake toothed disc 40 is released, and the brake toothed disc 40 re-engages and locks with the fixed toothed disc 60 under the action of the elastic member 50, which facilitates manual adjustment of the robot's locking state.

[0080] By setting a stop 80 on the shaft 30, excessive movement of the brake disc 40 can be avoided, and hard contact between the brake disc 40 and the electromagnet 20 or the fixed disc 60 can be avoided when the electromagnet 20 is energized or de-energized, thus preventing damage to the brake disc 40. This ensures the reliability of the brake on the robot joint and extends the service life of the brake device of this application.

[0081] By creating a groove 411 on the main body 41 of the brake disc 40 and placing one end of the elastic member 50 against the bottom surface of the groove 411, the elastic member 50 can be limited, restricting its radial runout. Furthermore, by creating the groove 411 on the main body 41 for the elastic member 50, when the electromagnet 20 is energized, the brake disc 40 slides along the shaft 30, gradually compressing the elastic member 50 until the brake disc 40 engages with the electromagnet 20. This reduces the space occupied on the shaft 30 and decreases the axial dimension of the brake device of this application.

[0082] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0083] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0084] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0085] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0086] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A brake device, disposed within a joint of a robot, characterized in that, include: A fixed frame, the first end of which is configured to be fixed to the first end of the joint, and an opening is provided in the fixed frame facing the second end; An electromagnet is disposed within the opening; The shaft is installed at the second end of the fixed frame; The brake disc is slidably disposed on the outer periphery of the shaft body and is configured to restrict relative rotation with respect to the shaft body; An elastic element is disposed between the fixed frame and the brake disc; A fixed toothed disc is configured to be fixed to the second end of the joint; When the electromagnet is energized, the brake toothed disc attracts the electromagnet and the fixed toothed disc separates, releasing the lock on the joint's degree of freedom; when the electromagnet is de-energized, the brake toothed disc engages with the fixed toothed disc under the action of the elastic element, and the joint's degree of freedom is locked.

2. The holding brake according to claim 1, characterized in that, The brake disc includes a main body and a first annular tooth portion disposed on the outer edge of the main body. The first tooth portion protrudes from the side of the main body, so that the main body and the first tooth portion form a stepped structure.

3. The holding brake according to claim 2, characterized in that, The fixed gear disc includes a fixed part and a second tooth part, wherein the second tooth part is disposed on the side of the fixed part near the brake gear disc; When the first tooth meshes with the second tooth, there is an adjustment gap between the main body and the fixing part, and the fixing part is provided with an adjustment hole that passes through the fixing part along the axial direction of the fixing toothed disc.

4. The holding brake according to claim 3, characterized in that, The adjustment holes are provided in at least two form, and the at least two adjustment holes are arranged symmetrically with respect to the axis of the fixed gear plate.

5. The holding brake according to claim 3, characterized in that, The adjustment hole is a threaded hole.

6. The holding brake according to claim 1, characterized in that, The brake disc is keyed to the shaft, and the outer wall of the shaft has a keyway extending axially.

7. The holding brake according to claim 6, characterized in that, The shaft is provided with a stop member, which is located at both ends of the keyway.

8. The holding brake according to claim 1, characterized in that, The shaft, the electromagnet, and the fixed frame are all coaxially arranged. The electromagnet has a cylindrical structure and is arranged in the opening on the periphery of the fixed frame. The shaft is installed in the center of the fixed frame, so that the electromagnet is arranged around the shaft.

9. The holding brake according to claim 1, characterized in that, The shaft body has an internal mounting hole extending along the axis, and the shaft body is connected to the end face of the second end of the fixed frame body by bolts.

10. The holding brake according to claim 2, characterized in that, The main body has a groove facing one end of the fixed frame. The elastic element is disposed in the groove. When the brake disc is attracted to the electromagnet, the elastic element is fully abutted in the groove. The elastic element includes a disc spring.

Images