High-magnetism transverse permanent magnet brake

Abstract

The utility model relates to the technical field of permanent magnet brakes, in particular to a high-magnetism transverse permanent magnet brake which comprises a shell cavity and a permanent magnet unit, a coil is arranged in the shell cavity, and the permanent magnet unit is embedded in the end face of one side of the shell cavity. The piezomagnetic plate is in butt joint with the shell cavity, and the outer edge of the piezomagnetic plate is in compression joint with the permanent magnet unit; the brake disc rotor is used for being connected with a motor rotating shaft; the movable plate is arranged between the brake disc rotor and the shell cavity, and the movable plate and the brake disc rotor are connected into an integrated structure; the axis of the permanent magnet unit points to the movable plate, so that the coil is powered off, and the movable plate gets close to the shell cavity. By changing the mounting position of the permanent magnet, the distance between the permanent magnet and the movable plate is shortened, the braking magnetic strength is ensured, and a more reliable braking effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet brake technical field, specifically, relate to a high magnetic transverse formula permanent magnet brake. BACKGROUND

[0002] Permanent magnet brake is a kind of device using permanent magnet to generate braking torque, is widely used in the mechanical system needing reliable braking.Internal permanent magnet (such as neodymium iron boron magnet) generates constant magnetic field, without external power supply maintaining braking state, when needing braking, magnetic field attracts rotating dynamic plate (usually containing magnetic material) and friction plate contact, realizes deceleration or parking by friction force, overcomes magnetic field suction force by spring force, hydraulic pressure / pneumatic pressure or manual operation, makes brake block separate from brake disc, removes brake.

[0003] For conventional permanent magnet brake, first, its permanent magnet is arranged in stator, structure is complex, needs to be matched with a permanent magnet framework, second, the distance between the shaft sleeve is far, there is failure risk;In addition, permanent magnet is usually arranged at the front end of stator, the distance from dynamic plate is far, magnetic property is weak, and the braking effect is general and easy to fail. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high magnetic transverse formula permanent magnet brake shortens the distance of permanent magnet and dynamic plate, ensures that braking magnetic intensity is strong, guarantees reliable braking effect.

[0005] The utility model realizes by the following technical scheme: a kind of high magnetic transverse formula permanent magnet brake, including shell cavity, the coil is arranged in the shell cavity, further including permanent magnet unit, it is embedded and installed in the one side end surface of the shell cavity;Magnetic plate, the magnetic plate is opposite to the shell cavity, the outer edge of magnetic plate is pressure connected with the permanent magnet unit;Brake disc rotor, it is used to be connected with motor rotating shaft;Dynamic plate, the dynamic plate is located between the brake disc rotor and shell cavity, and the dynamic plate is connected with the brake disc rotor and is integrally formed structure;The axis of the permanent magnet unit is directed to the dynamic plate, so that the coil is de-energized, the dynamic plate is close to the shell cavity.

[0006] Further, the shell cavity includes inner magnetic cylinder and outer magnetic sleeve ring spliced together, the coil is arranged in the gap between the inner magnetic cylinder and the outer magnetic sleeve ring;The inner side of the outer magnetic sleeve ring is provided with the installation ring groove for embedding the permanent magnet unit.

[0007] Further, the permanent magnet unit is composed of several arc-shaped magnet blocks, and the arc-shaped magnet blocks are spliced in a ring shape around the installation ring groove.

[0008] Further, the diameter of the inner magnetic cylinder is consistent with the diameter of the outer magnetic sleeve ring.

[0009] Further, one end of the brake disc rotor is inserted into the inner hole of the shell cavity and rotationally connected therewith.

[0010] Further, a magnetic isolation sheet is arranged between the inner magnetic cylinder and the magnetostrictive plate.

[0011] Further, the magnetostrictive plate is a conical cylinder structure, and a friction part is arranged at the tail end of the magnetostrictive plate, and the friction part is frictionally connected with the moving plate.

[0012] Further, the magnetic isolation sheet is made of copper or aluminum.

[0013] The technical scheme of the utility model has at least the following advantages and beneficial effects: the permanent magnet unit is arranged between the coil and the moving plate, the magnetic attraction distance is shortened, the magnetism is not easy to fail, and the braking effect is better; in addition, the shell cavity is installed in a split type, which is more convenient for later maintenance and disassembly, the magnet blocks can adjust the braking force by changing the installation quantity, and the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is an exploded view of the high-magnetic horizontal type permanent magnet brake in the utility model;

[0015] Figure 2 is a front view of the high-magnetic horizontal type permanent magnet brake in the utility model;

[0016] Figure 3 is Figure 2 is a sectional view of A-A in the utility model.

[0017] Reference signs: 1-shell cavity, 11-inner magnetic cylinder, 12-outer magnetic sleeve ring, 121-installation ring groove, 2-coil, 3-permanent magnet unit, 31-arc-shaped magnet block, 4-magnetostrictive plate, 41-friction part, 5-moving plate, 6-brake disc rotor, 7-magnetic isolation sheet. DETAILED DESCRIPTION

[0018] The following will be further described in combination with specific embodiments, referring to Figures 1-3As shown, the embodiment is a high magnetic transverse permanent magnet brake, comprising a shell cavity 1, a coil 2 is arranged in the shell cavity 1, further comprising a permanent magnet unit 3, which is embedded and installed on one side end face of the shell cavity 1; a pressure magnetic plate 4, the pressure magnetic plate 4 is opposite to the shell cavity 1, the outer edge of the pressure magnetic plate 4 is pressure connected with the permanent magnet unit 3, when installing, the permanent magnet unit 3 can be first installed into the shell cavity 1, and the pressure magnetic plate 4 is used to butt into the shell cavity 1, so that the pressure magnetic plate 4 presses the permanent magnet unit 3 to limit, and the brake reliability is ensured; a brake disc rotor 6, which is used to be connected with the motor shaft; a dynamic plate 5, which is arranged between the brake disc rotor 6 and the shell cavity 1, and the dynamic plate 5 is connected with the brake disc rotor 6 to form an integral structure; the axis of the permanent magnet unit 3 points to the dynamic plate 5, so that the coil 2 is powered off, and the dynamic plate 5 approaches the shell cavity 1; specifically, an annular groove for installing the coil 2 is processed in the shell cavity 1, the axis of the annular groove coincides with the cylindrical shell cavity 1, and the dynamic plate 5 and the brake disc rotor 6 are connected with a connecting screw and a spring sheet, which is a common technical knowledge, the dynamic plate 5 and the brake disc rotor 6 rotate synchronously with the motor shaft, the permanent magnet unit 3 is located between the coil 2 and the dynamic plate 5, when the coil 2 is powered off, due to the relatively close distance, the magnetic force generated by the permanent magnet unit 3 relatively large attracts the dynamic plate 5 to approach the end face friction braking of the shell cavity 1, and better braking effect is obtained.

[0019] As shown, Figure 3 The shell cavity 1 in the embodiment comprises an inner magnetic cylinder 11 and an outer magnetic ring 12 spliced together, and the coil 2 is arranged in the gap between the inner magnetic cylinder 11 and the outer magnetic ring 12; the inner side of the outer magnetic ring 12 is provided with a mounting ring groove 121 for embedding the permanent magnet unit 3; specifically, in order to facilitate the disassembly and installation of the coil 2, the shell cavity 1 is a split assembly structure, and the inner magnetic cylinder 11 and the outer magnetic ring 12 are connected by screws; and in order to facilitate the laying of the permanent magnet unit 3, ensure the axis precision, and ensure that the magnetic force direction aligns with the dynamic plate 5 to achieve good braking effect, the axis of the mounting ring groove 121 coincides with the axis of the dynamic plate 5.

[0020] As shown, Figure 1 In some embodiments, the permanent magnet unit 3 is composed of a plurality of arc-shaped magnet blocks 31, and the arc-shaped magnet blocks 31 are spliced end to end to form a ring around the mounting ring groove 121; specifically, according to the required braking force requirement, different number of magnet blocks can be selected to adjust the magnetic force, and the application range is wider; and the arc-shaped magnet blocks 31 are laid in the transverse direction as shown, so that they have a larger magnetic attraction surface aligned with the axial direction. Figure 1

[0021] As shown, Figure 1 and Figure 3 In some embodiments, the diameter of the inner magnetic cylinder 11 is consistent with the diameter of the outer magnetic ring 12, which has a smaller volume under the condition of ensuring the function of the brake.

[0022] ​In order to optimize the smoothness of the brake disc rotor 6 and the dynamic plate 5 when rotating, and avoid the brake disc rotor 6 axial vibration affecting the dynamic plate 5 brake surface contact, the brake disc rotor 6 is inserted into the inner hole of the shell cavity 1 and is rotationally connected with the inner hole; Specifically, one end of the brake disc rotor 6 is a extending cylinder structure extending into the shell cavity 1.

[0023] As shown in Figure 1 and Figure 3 In some embodiments, the inner magnetic cylinder 11 is in abutment with the magnetostrictive plate 4 and the magnetic isolation sheet 7; Specifically, the magnetic isolation sheet 7 is made of non-magnetic material (such as copper, aluminum or engineering plastic), which is inserted between the permanent magnet unit 3 and the dynamic plate 5 when the brake is released, and blocks the magnetic field path, so that the magnetic attraction force is reduced by more than 90%, thereby releasing the mechanical lock state.

[0024] In order to improve the braking effect and shorten the braking time, the magnetostrictive plate 4 is a tapered cylinder structure, and the tail end of the magnetostrictive plate 4 is provided with a friction part 41, and the friction part 41 is frictionally separated from the dynamic plate 5.

[0025] It is worth mentioning that the magnetic isolation sheet 7 is made of copper or aluminum material, which has good magnetic shielding effect.

[0026] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high magnetic transverse permanent magnet brake comprising a housing cavity (1) in which a coil (2) is arranged, characterized in that: Also included Permanent magnet unit (3) embedded in one side end face of the shell cavity (1); Magnetostrictive plate (4) opposite to the shell cavity (1), the outer edge of the magnetostrictive plate (4) is in pressure connection with the permanent magnet unit (3); Brake disc rotor (6) for connecting with the motor rotating shaft; Moving plate (5) provided between the brake disc rotor (6) and the shell cavity (1), and the moving plate (5) is connected with the brake disc rotor (6) as an integral structure; The axis of the permanent magnet unit (3) points to the moving plate (5), so that the coil (2) is powered off, and the moving plate (5) approaches the shell cavity (1).

2. The high magnetic transversely placed permanent magnet brake according to claim 1, characterized in that: The shell cavity (1) comprises an inner magnetic cylinder (11) and an outer magnetic ring (12) spliced together, and the coil (2) is arranged in the gap between the inner magnetic cylinder (11) and the outer magnetic ring (12); The inner side of the outer magnetic ring (12) is provided with a mounting ring groove (121) for embedding the permanent magnet unit (3).

3. The high magnetic transversely placed permanent magnet brake according to claim 2, characterized in that: The permanent magnet unit (3) is composed of a plurality of arc-shaped magnet blocks (31), and the arc-shaped magnet blocks (31) are spliced end to end around the mounting ring groove (121) to form a ring shape.

4. The high magnetic transversely placed permanent magnet brake according to claim 2, characterized in that: The diameter of the inner magnetic cylinder (11) is consistent with the diameter of the outer magnetic ring (12).

5. The high magnetic transverse flux permanent brake of claim 1 wherein: One end of the brake disc rotor (6) is inserted into the inner hole of the shell cavity (1) and connected in rotation.

6. The high magnetic transverse flux permanent brake of claim 2 wherein: The inner magnetic cylinder (11) and the magnetostrictive plate (4) are in abutment with the magnetic separation sheet (7).

7. The high magnetic transverse flux permanent brake of claim 6 wherein: The magnetostrictive plate (4) is a conical cylinder structure, the tail end of the magnetostrictive plate (4) is provided with a friction part (41), and the friction part (41) is in friction with the moving plate (5).

8. The high magnetic transverse flux permanent brake of claim 6 wherein: The magnetic separation sheet (7) is made of copper or aluminum material.

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