External totally-enclosed permanent magnet brake easy to install

Abstract

The utility model relates to the field of permanent magnet brakes, and particularly discloses an external totally-enclosed easy-to-install permanent magnet brake, which comprises a stator, a movable plate and a rotor flange which are sequentially arranged in the axial direction, and further comprises a cover cap which is in butt joint with one end of the stator in a detachable manner, the movable plate and the flange are arranged in the cover cap; a permanent magnet unit is arranged between the stator and the movable plate; the middle part of the rotor flange is connected with a mounting shaft; and one end of the mounting shaft extends out of the inner hole of the stator and is rotationally connected with the inner hole of the stator. The sealing performance of the brake is improved, and dust and water vapor are effectively prevented from making contact with core components of the brake to affect the normal functions of the brake.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet brake technical field, specifically, relate to a kind of external full-closed easy dress permanent magnet brake. BACKGROUND

[0002] Permanent magnet brake mainly utilizes the magnetic field generated by permanent magnet and the magnetic field generated by electromagnetic coil to realize brake and release function and interact.When electromagnetic coil is not electrified, the magnetic field generated by permanent magnet attracts armature, makes armature and the friction surface of stator contact, generates friction force, to realize brake, prevent the rotation of rotor;When electromagnetic coil is electrified, the electromagnetic field generated by electromagnetic coil and the magnetic field of permanent magnet mutually offset or weaken, armature is separated from the friction surface of stator under the action of spring force, and rotor can rotate freely, realize the release of brake.

[0003] The existing majority permanent magnet brake selects the scheme that conventional electromagnetic brake rotor flange and dynamic plate are all in exposed state, and the inner hole of brake is connected with motor rotating shaft, in some dusty and heavy moisture environment, the gap between rotor flange and dynamic plate is easily mixed with dust and cannot be normally attracted. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of external full-closed easy dress permanent magnet brake to improve the closed nature of brake, effectively isolate dust and water vapor contact brake core component to cause influence on its function.

[0005] The utility model discloses a kind of external full-closed easy dress permanent magnet brake, including the stator, dynamic plate and rotor flange that are sequentially arranged in axis direction, the rotor flange is connected with dynamic plate, further including cover, the cover is detachably butted in one end of the stator, so that the dynamic plate and flange are installed in the cover;Permanent magnet unit is equipped between the stator and the dynamic plate;The middle part of the rotor flange is connected with mounting shaft, one end of the mounting shaft is stretched out from the inner hole of the stator and is rotatably connected with it.

[0006] Further, the permanent magnet unit includes magnet block and pressing plate, the magnet block is embedded and installed in the stator, the pressing plate is connected with the stator by screw thread, and the pressing plate is in abutment with the magnet block.

[0007] Further, the pressing plate is annular structure.

[0008] Further, it further includes tight set screw for connecting the cover and the stator, and the tight set screw is accessed from the radial direction of the cover.

[0009] Further, first bearing is installed between the rotor flange and the cover, and second bearing is installed between the mounting shaft and the stator.

[0010] Furthermore, the first bearing is embedded in the rotor flange.

[0011] Furthermore, a spring plate is provided between the moving plate and the rotor flange, and a connecting screw is connected in series between the moving plate and the rotor flange, the connecting screw passing through the spring plate.

[0012] Furthermore, the end of the mounting shaft away from the cover is provided with a mating hole for connection and cooperation with the motor.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model forms an integrated structure by setting an installation shaft connected to the rotor flange and the moving plate, and sealing the exposed rotor flange and moving plate on the outside of the stator with a cover, so as to form a modular structure. The installation shaft can be directly connected to the motor installation interface, which improves the sealing performance of the brake, so that the brake has a good water and dust isolation effect and ensures the normal braking performance of the brake. Attached Figure Description

[0014] Figure 1 This is an internal structural diagram of the externally mounted, fully enclosed, easily installed permanent magnet brake of this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the right side of the brake.

[0016] Reference numerals: 1-Stator, 2-Permanent magnet unit, 21-Magnet block, 22-Pressure plate, 3-Moving plate, 4-Rotor flange, 5-Spring plate, 6-Connecting screw, 7-Mounting shaft, 71-Matching hole, 8-Setting screw, 9-First bearing, 10-Second bearing, 11-Cover. Detailed Implementation

[0017] The following description, in conjunction with specific embodiments, provides further details. Figures 1-2As shown, this embodiment is an external, fully enclosed, easily installed permanent magnet brake, including a stator 1, a moving plate 3, and a rotor flange 4 arranged axially in sequence. The rotor flange 4 is connected to the moving plate 3. It also includes a cover 11, which is detachably connected to one end of the stator 1, allowing the moving plate 3 and flange to be installed inside the cover 11. A permanent magnet unit 2 is provided between the stator 1 and the moving plate 3. A mounting shaft 7 is connected to the middle of the rotor flange 4, with one end extending from the inner hole of the stator 1 and rotatably connected to it. Specifically, the rotor flange 4, the moving plate 3, and the mounting shaft 7 form an integrated structure that rotates synchronously. The cover 11 covers and encapsulates the rotor flange 4 and the moving plate 3, forming a closed structure. External dust and moisture cannot reach the rotor flange 4 and the moving plate 3, ensuring the braking clearance. The mounting shaft 7 then connects to the motor mounting interface, solving the drawbacks of secondary installation and connection between the motor shaft and the brake. The brake as a whole forms a modular product, further improving the sealing performance and ensuring long-term braking stability.

[0018] like Figure 1 As shown, in some embodiments, the permanent magnet unit 2 includes a magnet block 21 and a pressure plate 22. The magnet block 21 is embedded in the stator 1, and the pressure plate 22 is threadedly connected to the stator 1 and abuts against the magnet block 21. Specifically, the magnet block 21 is provided with several evenly spaced magnet blocks arranged at the front end of the stator 1, and its distance from the moving plate 3 is shorter. When the stator 1 is de-energized and engaged, the magnet block 21 can generate a larger braking torque relative to the moving plate 3, thus having a better braking effect. The pressure plate 22 limits the magnet block 21 to prevent it from falling out of the mounting groove, and the number of magnet blocks 21 can be increased or decreased as needed to adjust the torque.

[0019] It can be said that the pressure plate 22 has a ring structure, and the magnet blocks 21 are distributed in a ring in the mounting groove of the stator 1.

[0020] like Figure 1 As shown, some embodiments also include set screws 8 for connecting the cover 11 and the stator 1, and the set screws 8 are radially inserted from the cover 11; specifically, the set screws 8 are screwed into both sides of the cover 11, making disassembly and assembly simple and convenient.

[0021] Alternatively, a first bearing 9 is installed between the rotor flange 4 and the cover 11, and a second bearing 10 is installed between the mounting shaft 7 and the stator 1. The first bearing 9 is embedded in the rotor flange 4, ensuring reliable installation and smooth operation of the brake.

[0022] More specifically, a spring plate 5 is provided between the moving plate 3 and the rotor flange 4, and a connecting screw 6 is connected in series between the moving plate 3 and the rotor flange 4, with the connecting screw 6 passing through the spring plate 5; specifically, when the stator 1 is energized, the magnetic field lines of the stator 1 coil cancel each other out with the magnet block 21, thereby pulling back the moving plate 3 and releasing the braking contact between the stator 1; when the stator 1 is de-energized, the moving plate 3 moves toward the magnet block 21, and the spring plate 5 extends and lengthens.

[0023] Even better, the end of the mounting shaft 7 furthest from the cover 11 is provided with a mating hole 71 for connecting with the motor. Depending on the size of the product shaft to be mated and the installation position, one end of the mating hole 71 can be directly inserted into the motor mounting interface and tightened with screws. The installation is simple and reliable, reducing the risks caused by installation.

[0024] 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. An externally mounted, fully enclosed, easily installed permanent magnet brake, comprising a stator (1), a moving plate (3), and a rotor flange (4) arranged axially in sequence, wherein the rotor flange (4) is connected to the moving plate (3), characterized in that: It also includes a cover (11), which is detachably connected to one end of the stator (1), such that the moving plate (3) and the flange are installed inside the cover (11); A permanent magnet unit (2) is provided between the stator (1) and the moving plate (3); A mounting shaft (7) is connected to the middle of the rotor flange (4), and one end of the mounting shaft (7) extends out of the inner hole of the stator (1) and is rotatably connected thereto.

2. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 1, characterized in that: The permanent magnet unit (2) includes a magnet block (21) and a pressure plate (22). The magnet block (21) is embedded in the stator (1). The pressure plate (22) is threadedly connected to the stator (1) and abuts against the magnet block (21).

3. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 2, characterized in that: The pressure plate (22) has a ring structure.

4. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 1, characterized in that: It also includes a set screw (8) for connecting the cover (11) and the stator (1), and the set screw (8) is radially accessed from the cover (11).

5. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 1, characterized in that: A first bearing (9) is installed between the rotor flange (4) and the cover (11), and a second bearing (10) is installed between the mounting shaft (7) and the stator (1).

6. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 5, characterized in that: The first bearing (9) is embedded in the rotor flange (4).

7. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 1, characterized in that: A spring plate (5) is provided between the moving plate (3) and the rotor flange (4), and a connecting screw (6) is connected in series between the moving plate (3) and the rotor flange (4), the connecting screw (6) passing through the spring plate (5).

8. The externally mounted, fully enclosed, easily installed permanent magnet brake according to claim 1, characterized in that: The mounting shaft (7) has a mating hole (71) at one end away from the cover (11) for connection with the motor.

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