Square brake
By using technical means such as shock absorbing components, guide components and shock absorbing rings in the brakes, the vibration and noise problems of the armature are solved, and the effectiveness of the brakes is improved.
Patent Information
- Application Number
- CN202411671446.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-02-25
AI Technical Summary
During the use of existing brakes, due to the unbalanced friction between the armature and the yoke, the vibration is caused, which in turn produces greater noise, affecting the use effect of the brake.
A square brake is designed, using technical means such as shock absorbing components, guide components and shock absorbing rings. The shock absorbing assembly slows down the vibration of the armature by combining the set screws, cylindrical pins, plugs and O-rings; the guide assembly guides the movement of the armature through the fixed shaft, guide columns and composite bushing to avoid unbalanced friction; the shock absorbing ring plays a buffering and shock absorption effect when the armature comes into contact with the yoke.
By reducing the vibration of the armature, the noise of the brake during use is reduced, and the effect and stability of the brake are improved.
Smart Images
Figure CN119508396A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of traction machine brakes, in particular to a square brake. Background Art
[0002] The elevator traction machine is the power equipment of the elevator, also known as the elevator host. Its function is to transport and transfer power to make the elevator run. It consists of an electric motor, brake, coupling, reduction box, traction wheel, frame and guide wheel, and an auxiliary handwheel. Among them, the brake uses a mechanical-electric friction type normally closed brake. The so-called normally closed brake means that the brake is applied when the machine is not working and released when the machine is running.
[0003] The brake is a basic device to ensure the safe operation of the elevator. The brake is generally equipped with a friction disc, an armature, a yoke, a magnetic pole and a coil. The magnetic pole and the coil are arranged on the yoke, and the friction disc is installed on the motor. The friction disc rotates with the motor main shaft. When braking is not needed, the magnetic pole and the coil are powered on to attract the armature, so that the armature does not contact the friction disc, so that no braking force is generated, and the motor main shaft rotates normally. When braking is needed, the magnetic pole and the coil are powered off, and the magnetic force generated by the magnetic pole and the coil gradually disappears. The thrust spring pushes the armature to contact the friction disc, so that the friction between the armature and the friction disc generates a braking force, which stops the friction disc and the motor main shaft from rotating, and the elevator equipment stops lifting.
[0004] However, when the existing brake is in use, when the armature is attracted to the yoke or released from the friction disk, unbalanced friction will be generated between the armature and the yoke, causing the armature to vibrate, which in turn will generate loud noise due to the vibration of the armature, affecting the use effect of the brake. Summary of the invention
[0005] In order to mitigate the vibration of the armature during the use of the brake, thereby reducing the noise generated during the use of the brake and further improving the use effect of the brake, the present application provides a square brake.
[0006] The present application provides a square brake, which adopts the following technical solution: A square brake comprises a coaxially arranged yoke, an armature and a friction disk, wherein the armature is located between the yoke and the friction disk, the friction disk is in contact with the armature, a driving component for attracting and releasing the armature is arranged in the yoke, a guide component for guiding the movement of the armature is arranged on the yoke, and a shock-absorbing component for reducing the vibration generated by the armature during use is also arranged in the yoke.
[0007] By adopting the above technical scheme, the driving component is used to help the magnetic yoke to attract or release the armature, thereby helping to achieve the separation or tightening of the armature and the friction disk, and further helping to achieve the braking effect of the brake; the guide component is used to help guide the movement of the armature; the shock-absorbing component is used to help mitigate the vibration generated by the armature during the use of the brake, thereby helping to reduce the noise generated during the use of the brake, and further helping to improve the use effect of the brake.
[0008] In a specific feasible implementation scheme, the shock absorbing assembly includes a locking screw, a cylindrical pin, a plug and an O-ring, a stepped hole is provided on the yoke, the stepped hole penetrates the yoke along the axial direction of the yoke, the inner diameter of the end of the stepped hole close to the armature is larger than the inner diameter of the end away from the armature, the locking screw is arranged in the stepped hole and is located at the end of the stepped hole away from the armature, the cylindrical pin is arranged in the stepped hole, and the end of the cylindrical pin abuts against the end of the locking screw close to the armature, the plug is arranged in the stepped hole and is located at the end of the stepped hole close to the armature, and the plug abuts against the end of the cylindrical pin away from the locking screw, and the O-ring is sleeved on the surface of the plug facing away from the cylindrical pin.
[0009] By adopting the above technical solution, the use of a locking screw helps to adjust the position of the cylindrical pin and the plug in the step hole, thereby helping to adjust the position of the O-ring, and then helping to use the O-ring to slow down the vibration of the armature during the process of the yoke attracting or releasing the armature, helping to reduce the noise generated by the brake during use, and improving the use effect of the brake.
[0010] In a specific feasible implementation scheme, the drive assembly includes a coil frame, an enameled wire, a release spring and an abutment block, a wire groove and a mounting groove are provided on the surface of the yoke facing the armature, the coil frame is arranged in the wire groove, the enameled wire is arranged in the coil frame, the release spring is fixedly arranged in the mounting groove, the abutment block is connected to one end of the release spring close to the armature, and the abutment block abuts against the armature.
[0011] By adopting the above technical solution, when the enameled wire is energized, a magnetic force will be generated to attract the armature, so that the armature and the yoke are attracted and contacted; when the enameled wire is de-energized, the magnetic force disappears, and the release spring and the abutment block help to release and separate the armature and the yoke, so that the armature and the friction disk are pressed tightly to achieve the braking effect of the brake.
[0012] In a specific possible implementation manner, the inner space of the wire groove is filled with a resin for sealing the enameled wire.
[0013] By adopting the above technical solution, using resin to seal the enameled wire helps to improve the stability of the enameled wire installation, while helping to protect the enameled wire, helping to improve the use effect of the enameled wire and extend the service life of the enameled wire.
[0014] In a specific feasible implementation scheme, the guide assembly includes a fixed shaft, a guide column and a composite bushing, a stepped shaft hole is provided on the yoke, the stepped shaft hole penetrates the yoke along the axial direction of the yoke, the fixed shaft is provided at the end of the stepped shaft hole away from the armature, the guide column is provided at the end of the fixed shaft close to the armature, and the guide column is located at the end of the stepped shaft hole close to the armature, the composite bushing is sleeved on the circumference of the guide column, and a guide groove for inserting the guide column is provided on the surface of the armature facing the yoke.
[0015] By adopting the above technical solution, the guide column is used to help guide the movement of the armature, thereby helping to improve the stability of the armature movement process, and further helping to avoid unbalanced friction between the armature and the friction disk as much as possible, helping to further reduce the vibration of the armature during the use of the brake, and further reducing the noise generated during the use of the brake.
[0016] In a specific possible implementation scheme, a ring groove is provided on a surface of the yoke facing the armature, the ring groove is provided on the circumferential periphery of the stepped shaft hole, and a shock absorbing ring is provided inside the ring groove.
[0017] By adopting the above technical solution, when the armature is attracted and contacted with the yoke, the shock-absorbing ring helps to play a buffering and shock-absorbing effect, thereby helping to further reduce the vibration generated by the armature, further reducing the noise generated by the brake during use, and improving the use effect of the brake.
[0018] In a specific possible implementation manner, the total gap between the armature and the friction disk is 0.25 mm to 0.45 mm, and the unbalanced gap does not exceed 0.05 mm.
[0019] By adopting the above technical solution, the setting of the gap between the armature and the friction disk and the unbalanced gap helps to avoid unbalanced friction between the armature and the friction disk as much as possible, thereby helping to reduce the vibration generated by the armature, and further helping to reduce the noise generated during the use of the brake, which helps to improve the use effect of the brake.
[0020] In a specific feasible implementation scheme, a mounting plate is provided on the outer wall of the yoke, a micro switch is fixedly provided on the mounting plate, a lever is rotatably provided on the mounting plate, a mounting bracket is provided on the outer wall of the armature, a push rod is provided on the mounting bracket, and the push rod is abutted against the push rod.
[0021] By adopting the above technical solution, the micro switch is used to protect the machine from stopping when a brake failure occurs. The setting of the push rod and the lever is used to improve the sensing ability and sensitivity of the micro switch, thereby improving the use effect of the micro switch.
[0022] In a specific possible implementation manner, a shield for protecting the micro switch is provided on the magnetic yoke.
[0023] By adopting the above technical solution, the use of the protective cover helps to prevent dust or other debris from falling onto the micro switch, thereby helping to ensure the use effect of the micro switch.
[0024] In a specific possible implementation manner, the outer overall shape of the brake is set to be square.
[0025] By adopting the above technical solution, setting the brake in a square shape helps to improve the convenience of the brake during installation and disassembly.
[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application provides a shock-absorbing assembly, which helps to mitigate the vibration of the armature during the use of the brake, thereby helping to reduce the noise generated during the use of the brake, and further helping to improve the use effect of the brake.
[0027] 2. The present application provides a guide assembly which helps guide the movement of the armature, thereby helping to improve the stability of the armature movement process, thereby helping to minimize unbalanced friction between the armature and the friction disk, helping to further mitigate the vibration of the armature during the use of the brake, and further reducing the noise generated during the use of the brake.
[0028] 3. The present application provides a shock-absorbing ring, which helps to play a buffering and shock-absorbing effect when the armature and the yoke are attracted and contacted, thereby helping to further reduce the vibration generated by the armature, further reducing the noise generated by the brake during use, and improving the use effect of the brake. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0030] Figure 2 It is a cross-sectional view showing the specific internal structure of the brake.
[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle.
[0032] Figure 4 yes Figure 2 Enlarged view of point B in the middle.
[0033] Figure 5 It is a schematic diagram showing the specific structure on the side walls of the yoke and the armature.
[0034] Explanation of the reference numerals in the accompanying drawings: 1. Yoke; 2. Armature; 3. Friction disc; 4. Drive assembly; 41. Coil skeleton; 42. Enameled wire; 43. Release spring; 44. Abutment block; 5. Guide assembly; 51. Fixed shaft; 52. Guide column; 53. Composite bushing; 6. Shock-absorbing assembly; 61. Set screw; 62. Cylindrical pin; 63. Plug; 64. O-ring; 7. Step hole; 8. Wire groove; 9. Mounting groove; 10. Step shaft hole; 11. Guide groove; 12. Ring groove; 13. Shock-absorbing ring; 14. Mounting plate; 15. Micro switch; 16. Lever; 17. Mounting bracket; 18. Push rod; 19. Protective cover. DETAILED DESCRIPTION
[0035] The present application is further described in detail below in conjunction with the accompanying drawings.
[0036] The present application embodiment discloses a square brake, referring to Figure 1 and Figure 2 , a coaxially arranged yoke 1, armature 2 and friction disc 3, the armature 2 is movably installed between the yoke 1 and the friction disc 3, and the armature 2 is in contact with the friction disc 3, and a driving component 4 is arranged in the yoke 1. The overall shape of the outer surface of the brake is square.
[0037] Reference Figure 2 The drive assembly 4 includes a coil frame 41, an enameled wire 42, a release spring 43 and an abutment block 44. A wire slot 8 and a mounting slot 9 are provided on the side of the yoke 1 facing the armature 2. The coil frame 41 is fixedly installed in the wire slot 8. The enameled wire 42 is fixedly installed in the coil frame 41. The wire slot 8 is filled with resin. The release spring 43 is fixedly installed in the mounting slot 9. The abutment block 44 is fixedly connected to the end of the release spring 43 close to the armature 2, and the abutment block 44 abuts against the side of the armature 2 facing the yoke 1.
[0038] Reference Figure 2 When the brake is not activated, the enameled wire 42 is energized, and the generated magnetic force will attract the armature 2, so that the armature 2 and the yoke 1 are attracted and contacted, so that the armature 2 is away from the friction disk 3; when the brake is activated, the enameled wire 42 is de-energized, and the disappearance of the magnetic force will release the attraction to the armature 2, and at the same time, the release spring 43 drives the abutment block 44 under the action of its own elastic force to push the armature 2 away from the yoke 1, so that the armature 2 and the friction disk 3 are tightly rubbed to achieve the braking effect of the brake. The resin helps to seal and protect the enameled wire 42, thereby helping to improve the use effect of the enameled wire 42 and extend the service life of the enameled wire 42.
[0039] Reference Figure 2 When the brake is not activated, the total gap between the armature 2 and the friction disc 3 ranges from 0.25 mm to 0.45 mm. In this embodiment, the total gap between the armature 2 and the friction disc 3 is 0.35 mm, and the unbalanced gap between the armature 2 and the friction disc 3 does not exceed 0.05 mm. By setting the gap and unbalanced gap between the armature 2 and the friction disc 3, it is helpful to avoid unbalanced friction between the armature 2 and the friction disc 3 as much as possible, thereby helping to slow down the vibration generated by the armature 2, and further helping to reduce the noise generated during the use of the brake, which helps to improve the use effect of the brake.
[0040] Reference Figure 2 and Figure 3 A guide assembly 5 is provided on the yoke 1, and the guide assembly 5 includes a fixed shaft 51, a guide column 52 and a composite bushing 53. A step shaft hole 10 is provided on the yoke 1, and the step shaft hole 10 penetrates the yoke 1 along the axial direction of the yoke 1. The fixed shaft 51 is fixedly installed at the end of the step shaft hole 10 away from the armature 2, and the guide column 52 is fixedly installed at the end of the fixed shaft 51 close to the armature 2, and the guide column 52 is located at the end of the step shaft hole 10 close to the armature 2, and the composite bushing 53 is sleeved on the circumferential periphery of the guide column 52, and a guide groove 11 is provided on the side of the armature 2 facing the yoke 1.
[0041] Reference Figure 2 and Figure 3 During the movement of the armature 2, the guide column 52 helps guide the movement of the armature 2, thereby helping to improve the stability of the movement of the armature 2, thereby helping to avoid unbalanced friction between the armature 2 and the friction disk 3, helping to further reduce the vibration of the armature 2 during the use of the brake, and further reducing the noise generated during the use of the brake. The composite bushing 53 helps to play a buffering and shock-absorbing effect, helping to reduce the vibration generated during the contact between the armature 2 and the guide column 52, thereby helping to reduce noise.
[0042] Reference Figure 3 A ring groove 12 is provided on the side of the yoke 1 facing the armature 2. The ring groove 12 is located at the circumferential periphery of the stepped shaft hole 10. A damping ring 13 is fixedly mounted inside the ring groove 12. When the armature 2 and the yoke 1 are in contact with each other, the damping ring 13 helps to play a buffering and shock absorbing effect, thereby helping to further reduce the vibration generated by the armature 2, further reducing the noise generated by the brake during use, and improving the use effect of the brake.
[0043] Reference Figure 2 and Figure 4A shock absorbing assembly 6 is also provided in the yoke 1, and the shock absorbing assembly 6 includes a set screw 61, a cylindrical pin 62, a plug 63 and an O-ring 64. A step hole 7 is opened along the axial direction of the yoke 1. The inner diameter of the end of the step hole 7 close to the armature 2 is larger than the inner diameter of the end away from the armature 2. The set screw 61 is threadedly connected in the step hole 7 and is located at the end of the step hole 7 away from the armature 2. The cylindrical pin 62 is movably clamped in the step hole 7, and the end of the cylindrical pin 62 abuts against the end of the set screw 61 close to the armature 2. The plug 63 is located at the end of the step hole 7 close to the armature 2 and abuts against the end of the cylindrical pin 62 away from the set screw 61. The O-ring 64 is fixedly sleeved on the side of the plug 63 away from the cylindrical pin 62.
[0044] Reference Figure 2 and Figure 4 The operator adjusts the position of the cylindrical pin 62 and the plug 63 in the step hole 7 by tightening the set screw 61, thereby adjusting the position of the O-ring 64, which helps to use the O-ring 64 to slow down the vibration of the armature 2 during the process of the yoke 1 attracting or releasing the armature 2, helps to reduce the noise generated during the use of the brake, and improves the use effect of the brake.
[0045] Reference Figure 2 and Figure 5 A mounting plate 14 is fixedly mounted on the outer wall of the yoke 1, a micro switch 15 is fixedly mounted on the mounting plate 14, and a lever 16 is rotatably mounted on the mounting plate 14. A mounting bracket 17 is fixedly mounted on the outer wall of the armature 2, and a top rod 18 abutting against the lever 16 is fixedly connected to the mounting bracket 17. A shield 19 located outside the micro switch 15 is also fixedly mounted on the outer wall of the yoke 1.
[0046] Reference Figure 2 and Figure 5 When the armature 2 moves, the mounting bracket 17 and the push rod 18 move synchronously with the armature 2, and the micro switch 15 can accurately sense the movement of the push rod 18 through the lever 16, thereby helping to improve the sensing ability and sensitivity of the micro switch 15, and further helping to improve the shutdown protection effect of the micro switch 15. The protective cover 19 helps to prevent dust or other debris from falling on the micro switch 15, thereby helping to ensure the use effect of the micro switch 15.
[0047] The implementation principle of the embodiment of the present application is: when the brake is not started, the enameled wire 42 is energized, and the generated magnetic force will attract the armature 2, so that the armature 2 and the yoke 1 are attracted and contacted, thereby making the armature 2 move away from the friction disk 3; when the brake is started, the enameled wire 42 is de-energized, the disappearance of the magnetic force will release the attraction to the armature 2, and at the same time, the release spring 43 drives the abutment block 44 under the action of its own elastic force to push the armature 2 away from the yoke 1, so that the armature 2 and the friction disk 3 are pressed against each other and rubbed, thereby achieving the braking effect of the brake.
[0048] During the movement of the armature 2, the guide column 52 helps to guide the movement of the armature 2, thereby helping to improve the stability of the movement of the armature 2, and further helping to avoid unbalanced friction between the armature 2 and the friction disk 3 as much as possible, helping to further mitigate the vibration of the armature 2 during the use of the brake, and further reducing the noise generated during the use of the brake.
[0049] When the armature 2 is attracted and in contact with the yoke 1, the shock absorbing ring 13 helps to play a buffering and shock absorbing effect, thereby helping to further reduce the vibration generated by the armature 2, further reducing the noise generated by the brake during use, and improving the use effect of the brake.
[0050] The operator adjusts the position of the cylindrical pin 62 and the plug 63 in the step hole 7 by tightening the set screw 61, thereby adjusting the position of the O-ring 64. This helps to use the O-ring 64 to mitigate the vibration of the armature 2 during the process of the yoke 1 attracting or releasing the armature 2, helps to reduce the noise generated during the use of the brake, and improves the use effect of the brake.
[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A square brake, characterized in that: The invention comprises a coaxially arranged magnetic yoke (1), an armature (2) and a friction disk (3), wherein the armature (2) is located between the magnetic yoke (1) and the friction disk (3), the friction disk (3) is in contact with the armature (2), a driving component (4) for engaging and releasing the armature (2) is arranged in the magnetic yoke (1), a guide component (5) for guiding the movement of the armature (2) is arranged on the magnetic yoke (1), and a shock absorbing component (6) for reducing the vibration generated by the armature (2) during use is also arranged in the magnetic yoke (1).
2. A square brake according to claim 1, characterized in that: The shock absorbing assembly (6) comprises a set screw (61), a cylindrical pin (62), a plug (63) and an O-ring (64); a stepped hole (7) is provided on the yoke (1); the stepped hole (7) penetrates the yoke (1) along the axial direction of the yoke (1); the inner diameter of the end of the stepped hole (7) close to the armature (2) is larger than the inner diameter of the end away from the armature (2); the set screw (61) is arranged in the stepped hole (7) and is located at the end of the stepped hole (7) away from the armature (2); The cylindrical pin (62) is arranged in the step hole (7), and the end of the cylindrical pin (62) abuts against the end of the fixing screw (61) close to the armature (2). The plug (63) is arranged in the step hole (7) and is located at the end of the step hole (7) close to the armature (2), and the plug (63) abuts against the end of the cylindrical pin (62) away from the fixing screw (61). The O-ring (64) is sleeved on a surface of the plug (63) facing away from the cylindrical pin (62).
3. A square brake according to claim 1, characterized in that: The drive assembly (4) comprises a coil frame (41), an enameled wire (42), a release spring (43) and an abutment block (44); a wire groove (8) and a mounting groove (9) are provided on a surface of the yoke (1) facing the armature (2); the coil frame (41) is arranged in the wire groove (8); the enameled wire (42) is arranged in the coil frame (41); the release spring (43) is fixedly arranged in the mounting groove (9); the abutment block (44) is connected to one end of the release spring (43) close to the armature (2), and the abutment block (44) abuts against the armature (2).
4. A square brake according to claim 3, characterized in that: The inner space of the wire groove (8) is filled with resin for sealing the enameled wire (42).
5. A square brake according to claim 1, characterized in that: The guide assembly (5) comprises a fixed shaft (51), a guide column (52) and a composite bushing (53); a stepped shaft hole (10) is provided on the yoke (1); the stepped shaft hole (10) penetrates the yoke (1) along the axial direction of the yoke (1); the fixed shaft (51) is arranged at an end of the stepped shaft hole (10) away from the armature (2); the guide column (52) is arranged at an end of the fixed shaft (51) close to the armature (2), and the guide column (52) is located at an end of the stepped shaft hole (10) close to the armature (2); the composite bushing (53) is sleeved on the circumference of the guide column (52); and a guide groove (11) for inserting the guide column (52) is provided on a surface of the armature (2) facing the yoke (1).
6. A square brake according to claim 5, characterized in that: A ring groove (12) is provided on a surface of the yoke (1) facing the armature (2); the ring groove (12) is arranged on the circumferential periphery of the stepped shaft hole (10); and a damping ring (13) is arranged inside the ring groove (12).
7. A square brake according to claim 1, characterized in that: The total gap between the armature (2) and the friction disk (3) is 0.25 mm to 0.45 mm, and the unbalanced gap does not exceed 0.05 mm.
8. A square brake according to claim 1, characterized in that: A mounting plate (14) is arranged on the outer wall of the yoke (1), a micro switch (15) is fixedly arranged on the mounting plate (14), a lever (16) is rotatably arranged on the mounting plate (14), a mounting bracket (17) is arranged on the outer wall of the armature (2), a push rod (18) is arranged on the mounting bracket (17), and the push rod (18) abuts against the push rod (16).
9. A square brake according to claim 8, characterized in that: The magnetic yoke (1) is provided with a protective cover (19) for protecting the micro switch (15).
10. A square brake according to claim 1, characterized in that: The outer overall shape of the brake is set to be square.