Dual end brake power-off brake

Abstract

The utility model relates to the technical field of brake, provide a kind of double-end brake power-off brake, comprising: flange, two flanges are arranged side by side, and two flanges are fixedly connected;Stator, it is slidably arranged between two flanges;Rotor, rotor is provided with two, and is divided and arranged in the both ends of stator;Dynamic plate, it is slidably arranged between stator and one of rotor;And pressure spring, it is arranged between stator and dynamic plate.The utility model compared with prior art, the utility model only needs to set dynamic plate in one end of stator, and omits the dynamic plate of the other end of stator, it is favorable to reduce brake axial dimension, so that structure is more compact.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, and more specifically, to a dual-end braking power-off brake. Background Technology

[0002] In industrial transmission systems, automated equipment, and lifting and transport machinery, brakes are core safety components whose performance directly affects the stability and reliability of equipment operation. Currently, brakes on the market are mainly divided into electromagnetic, hydraulic, and pneumatic types. Among them, electromagnetic power-off brakes are widely used in scenarios requiring emergency braking or power failure protection due to their rapid response and convenient control.

[0003] To improve braking torque, some electromagnetic brakes currently employ a dual-end braking method, meaning both ends of the stator can be braked. For example, patent documents with publication numbers "CN110671446A" and "CN204213220U," as well as the earlier application with application number "2025206742225," all disclose electromagnetic brakes capable of braking at both ends. However, these technologies all require a structure with armatures and rotors symmetrically arranged at both ends of the stator. This method necessitates reserving space at both ends of the stator for armature installation, resulting in insufficient axial compactness. Utility Model Content

[0004] The purpose of this invention is to provide a dual-end power-off brake to address the aforementioned deficiencies of existing solutions.

[0005] This utility model is achieved through the following technical solution: A dual-end braking power-off brake, comprising: There are two flanges arranged side by side, and the two flanges are fixedly connected. The stator is slidably disposed between two flanges; There are two rotors, located at opposite ends of the stator. A movable plate, which is slidably disposed between the stator and one of the rotors; And a pressure spring, which is located between the stator and the moving plate.

[0006] Optionally, the two flanges are connected by connecting screws, and the connecting screws are fitted with positioning sleeves for defining the distance between the two flanges.

[0007] Optionally, the moving plate is provided with a guide hole that mates with the positioning sleeve.

[0008] Optionally, at least two sets of the compression springs are provided along the radial direction of the stator.

[0009] Optionally, friction plates are provided on both sides of the rotor.

[0010] Optionally, the brake also includes a bushing, the inner walls of both rotors being connected to the outer wall of the same bushing via splines, and the inner wall of the bushing being provided with a keyway for connecting the power shaft.

[0011] Optionally, a sealing ring is provided between the rotor and the bushing.

[0012] Optionally, a dust cover is provided between each of the two flanges and the stator.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: In this utility model, the stator is slidably disposed between two fixedly connected flanges. When power is off, the pressure spring causes the stator and the moving plate to move away from each other, so that the stator and the moving plate respectively press against the corresponding rotor, thereby achieving double-end braking; when power is on, the stator attracts the moving plate, so that the rotor has a gap for axial movement, thereby releasing the brake. Compared with the existing solution, this utility model only needs to set the moving plate at one end of the stator, omitting the moving plate at the other end of the stator, which is beneficial to reducing the axial dimension of the brake and making the structure more compact. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a dual-end braking power-off brake provided by this utility model; Reference numerals: 1-flange, 2-stator, 201-magnetic yoke, 202-coil, 3-rotor, 4-moving plate, 5-compression spring, 6-friction plate, 7-connecting screw, 8-positioning sleeve, 9-shaft sleeve, 10-sealing ring, 11-dust cover. Detailed Implementation

[0015] refer to Figure 1 A dual-end power-off brake includes a flange 1, a stator 2, a rotor 3, a moving plate 4, and a pressure spring 5. Two flanges 1 are arranged side-by-side and fixedly connected. In practical applications, one flange 1 is fixed to the mounting surface with screws. The stator 2 is slidably disposed between the two flanges 1. Two rotors 3 are provided, located at opposite ends of the stator 2. The moving plate 4 is slidably disposed between the stator 2 and one of the rotors 3.

[0016] Based on the above, it is easy to understand that the stator 2, the moving plate 4, and the two rotors 3 can all be axially displaced. Meanwhile, those skilled in the art should understand that the stator 2 is typically composed of a magnetic yoke 201 and a coil 202 (hereinafter, unless otherwise specified, "stator 2" refers to the magnetic yoke 201). One end of the magnetic yoke 201 has an annular groove, and the coil 202 is located within the annular groove. The moving plate 4 should be located at the end of the magnetic yoke 201 with the annular groove to ensure that when the coil 202 is energized, a magnetic circuit is formed between the magnetic yoke 201 and the moving plate 4, allowing the magnetic yoke 201 to attract the moving plate 4.

[0017] The compression spring 5 is located between the stator 2 and the moving plate 4. Specifically, the stator 2 has a blind mounting hole, and the compression spring 5 is installed in the blind mounting hole, with one end abutting against the bottom of the blind mounting hole and the other end abutting against the moving plate 4. In this embodiment, two sets of compression springs 5 ​​are provided along the radial direction of the stator 2, and each set can have several compression springs 5 ​​arranged along the radial direction of the stator 2 to ensure that the brake can achieve sufficient braking torque. In other embodiments, if there is enough radial space in the stator 2, more sets of compression springs 5 ​​can be provided to achieve a greater braking torque requirement.

[0018] In practical applications, when power is off, the pressure spring 5 causes the stator 2 and the moving plate 4 to move away from each other, allowing the stator 2 and the moving plate 4 to press against the corresponding rotor 3, thus achieving double-end braking. When power is on, the stator 2 attracts the moving plate 4, creating a gap for axial movement of the rotor 3, thereby releasing the brake. Compared with existing solutions, this invention only requires a moving plate 4 at one end of the stator 2, omitting the moving plate 4 at the other end of the stator 2, which helps to reduce the axial dimension of the brake and makes the structure more compact.

[0019] In this embodiment, friction plates 6 are provided on both sides of the rotor 3 to improve friction and ensure braking torque. The friction plates 6 are preferably fixed by adhesive bonding. In addition, positioning steps for installing the friction plates 6 are provided on both sides of the rotor 3 to facilitate the initial fixing of the friction plates 6 before bonding.

[0020] In this embodiment, the two flanges 1 are fixedly connected as follows: the two flanges 1 are connected by connecting screws 7. In practical applications, a countersunk hole (not shown in the figure) can also be provided on one of the flanges 1, and the head of the connecting screw 7 is hidden in the countersunk hole. A positioning sleeve 8 is fitted on the connecting screw 7, and each end of the positioning sleeve 8 abuts against one of the flanges 1, thereby limiting the distance between the two flanges 1. By selecting positioning sleeves 8 of different lengths, the gap between the two flanges 1 can also be adjusted. On this basis, the moving plate 4 is provided with a guide hole that cooperates with the positioning sleeve 8, so that the moving plate 4 is radially positioned, and the positioning sleeve 8 also serves as a guide for the axial movement of the moving plate 4.

[0021] The brake also includes a bushing 9. The inner walls of both rotors 3 are connected to the outer wall of the same bushing 9 via splines, meaning that the inner walls of the rotors 3 and the outer walls of the bushing 9 are provided with mating spline teeth. The inner wall of the bushing 9 is provided with a keyway for connecting a power shaft (not shown) so that the bushing 9 can be connected to the power shaft via a flat key. When the brake is unlocked, the power shaft can drive the bushing 9 and the two rotors 3 to rotate simultaneously.

[0022] A sealing ring 10 is provided between the rotor 3 and the bushing 9 to improve the sealing performance between them. Furthermore, dust covers 11 are provided between each of the two flanges 1 and the stator 2 to seal the gap between them and prevent dust accumulation. Alternatively, the dust covers 11 can be installed as follows: both ends of the dust cover 11 have annular locking blocks, and the outer sides of the flanges 1 and stator 2 have annular grooves that mate with the locking blocks. As the dust cover 11 is typically made of plastic and has some elasticity, installation is achieved by simply inserting the annular locking blocks of the dust cover 11 into the annular grooves. In other embodiments, the dust cover 11 can also be installed in other ways, such as by fastening it to the flanges 1 and stator 2 with screws.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-end braking power-off brake, characterized in that, include: There are two flanges arranged side by side, and the two flanges are fixedly connected. The stator is slidably disposed between two flanges; There are two rotors, located at opposite ends of the stator. A movable plate, which is slidably disposed between the stator and one of the rotors; And a pressure spring, which is located between the stator and the moving plate.

2. The dual-end braking power-off brake according to claim 1, characterized in that, The two flanges are connected by connecting screws, and the connecting screws are fitted with positioning sleeves to limit the distance between the two flanges.

3. The dual-end braking power-off brake according to claim 2, characterized in that, The moving plate is provided with a guide hole that mates with the positioning sleeve.

4. The dual-end braking power-off brake according to claim 1, characterized in that, The compression springs are provided in at least two sets along the radial direction of the stator.

5. The dual-end braking power-off brake according to claim 1, characterized in that, Friction plates are provided on both sides of the rotor.

6. The dual-end braking power-off brake according to claim 1, characterized in that, The brake also includes a bushing, the inner walls of both rotors are connected to the outer wall of the same bushing via splines, and the inner wall of the bushing is provided with a keyway for connecting the power shaft.

7. The dual-end braking power-off brake according to claim 6, characterized in that, A sealing ring is provided between the rotor and the bushing.

8. The dual-end braking power-off brake according to claim 1, characterized in that, Dust covers are provided between the two flanges and the stator.

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