Large-torque double-rotor thin power-off brake

Abstract

The utility model relates to the technical field of brakes, and provides a large-torque double-rotor thin power-off brake which comprises a stator, a first rotor, a second rotor, a first movable plate, a second movable plate, a first flange and a second flange, the first flange, the first rotor and the first movable plate are arranged on one side of the stator and are sequentially arranged in the direction close to the stator, the first flange is fixedly connected with the stator, and a first spring is arranged between the stator and the first movable plate; a sinking groove is formed in the end, close to the first movable plate, of the inner wall of the stator, the second flange and the second stator are installed in the sinking groove, the second rotor is clamped between the second flange and the bottom of the sinking groove, the second movable plate is arranged on the side, away from the first movable plate, of the stator and fixedly connected with the second flange, and a second spring is arranged between the stator and the second top plate. Braking torque is increased through the double rotors, and the situation that the axial size of the brake is too large can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake technology field, specifically, relate to a big torque double rotor thin model power failure brake. BACKGROUND

[0002] Power failure brake usually includes stator, rotor, spring, dynamic board etc. component composition, under the power failure state, the spring elasticity makes the dynamic board to hold tightly the rotor, produces the friction force, thereby forms the brake, under the power -on state, the stator produces the magnetic field, and the magnetic field force overcomes the spring elasticity, makes the dynamic board and the rotor separate, removes the brake.

[0003] The above-mentioned power failure brake braking torque is small, in order to adapt to big brake torque occasion, some prior art adopts double rotor structure to improve the brake torque, for example, the patent literature with the publication number of "CN205190600U" discloses a double rotor spring pressurization electromagnetic safety brake, however, in the prior art, two rotors are arranged side by side, although the brake torque is increased, but it will make the brake axial dimension too large. UTILITY MODEL CONTENTS

[0004] The utility model discloses a big torque double rotor thin model power failure brake to solve the above-mentioned defects of prior art.

[0005] The utility model discloses the following technical scheme realizes:

[0006] A big torque double rotor thin model power failure brake, including stator and the first rotor and the second rotor of the fixed setting on the rotating shaft, still including first dynamic board, second dynamic board, first flange and second flange, first flange, first rotor and first dynamic board are located stator one side and are sequentially arranged along the direction close to stator, and first flange is fixedly connected with stator, and the first spring is arranged between stator and first dynamic board;

[0007] The inner wall of stator is equipped with the sink groove close to the one end of first dynamic board, and second flange and second stator are installed in the sink groove, and second rotor is clamped between second flange and the bottom of sink groove, and second dynamic board is located stator side away from first dynamic board and is fixedly connected with second flange, and the second spring is arranged between stator and second top plate.

[0008] Optionally, the first flange and the stator are connected by a first screw, and a first distance sleeve is sleeved on the first screw to limit the distance between the first flange and the stator.

[0009] Optionally, the outer side of the first dynamic board is in contact with the outer side of the first distance sleeve.

[0010] Optionally, the second flange and the second dynamic board are connected by a second screw, and a second distance sleeve is sleeved on the second screw to limit the distance between the second flange and the second dynamic board.

[0011] Optionally, the outer diameter of the second moving plate is equal to the outer diameter of the stator.

[0012] Optionally, the outer diameter of the first flange is equal to the outer diameter of the stator.

[0013] Optionally, the stator is provided with a first blind hole for mounting the first spring and a second blind hole for mounting the second spring.

[0014] Optionally, the first flange is provided with a plurality of mounting holes in the circumferential direction, and a mounting screw is arranged in each mounting hole.

[0015] The technical scheme of the utility model has at least the following advantages and beneficial effects: in the utility model, when power is off, the first moving plate is pressed against the first rotor under the elastic force of the first spring, and at the same time, the second moving plate is pressed against the second flange under the elastic force of the second spring, thereby forming braking; when power is on, the stator generates electromagnetic force, and at the same time, the first moving plate and the second moving plate are adsorbed, so that the first moving plate is separated from the first rotor, and at the same time, the second flange is separated from the second rotor, thereby releasing braking; it can be seen that the utility model realizes increasing braking torque through double rotors, and since the second flange and the second stator are mounted in the sink groove of the stator, the second flange and the second stator do not occupy axial dimension, that is, the axial dimension of the brake can be avoided from being too large. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of a large-torque double-rotor thin-profile power-off brake provided by the utility model;

[0017] Figure 2 It is an A-A sectional view of the utility model in Figure 1

[0018] Figure 3 It is a rear view of a large-torque double-rotor thin-profile power-off brake provided by the utility model;

[0019] Figure 4 It is a B-B sectional view of the utility model in Figure 3

[0020] Reference Signs: 1-rotating shaft, 2-first flange, 3-first rotor, 4-first moving plate, 5-stator, 6-second flange, 7-second rotor, 8-second moving plate, 9-first screw, 10-first distance sleeve, 11-second screw, 12-second distance sleeve, 13-mounting screw, 14-first spring, 15-second spring. DETAILED DESCRIPTION

[0021] Reference Figures 1-4 ​​The utility model provides a big torque double rotor thin model power-off brake, including stator 5 and first rotor 3 and second rotor 7 of being fixed on the rotating shaft 1, namely first rotor 3 and second rotor 7 synchronous rotation with rotating shaft 1 in working, on the basis, still including first dynamic plate 4, second dynamic plate 8, first flange 2 and second flange 6.

[0022] First flange 2, first rotor 3 and first dynamic plate 4 are arranged in the side of stator 5 and are sequentially arranged along the direction of approaching stator 5, and first flange 2 is fixedly connected with stator 5; the inner wall of stator 5 is provided with a sink groove close to one end of first dynamic plate 4, second flange 6 and second stator 5 are installed in the sink groove, second rotor 7 is clamped between second flange 6 and the bottom of sink groove, and second dynamic plate 8 is arranged on the side of stator 5 away from first dynamic plate 4 and is fixedly connected with second flange 6, so that second dynamic plate 8 can drive second flange 6 to move synchronously when moving.

[0023] First spring 14 is arranged between stator 5 and first dynamic plate 4, and second spring 15 is arranged between stator 5 and second dynamic plate, and in the embodiment, stator 5 is provided with first blind hole for installing first spring 14 and second blind hole for installing second spring 15, so as to avoid the occupation of first spring 14 and second spring 15 in the axial space of the brake.

[0024] The working principle of the brake provided by the embodiment is as follows: when power-off, first dynamic plate 4 is pressed tightly with first rotor 3 under the elastic force of first spring 14, and second flange 6 is pressed tightly with second rotor 7 under the elastic force of second spring 15, so as to form braking; when power-on, stator 5 generates electromagnetic force, and first dynamic plate 4 and second dynamic plate 8 are adsorbed, so that first dynamic plate 4 is separated from first rotor 3, and second flange 6 is separated from second rotor 7, so as to release the braking; it can be seen that the brake torque is increased by the double rotor, and since second flange 6 and second stator 5 are installed in the sink groove of stator 5, the axial dimension of second flange 6 and second stator 5 is avoided, that is, the axial dimension of the brake can be avoided to be too large.

[0025] As an option, the fixed connection mode between first flange 2 and stator 5 in the embodiment is that first flange 2 and stator 5 are connected through first screw 9, and first distance sleeve 10 for limiting the distance between first flange 2 and stator 5 is sleeved on first screw 9. On this basis, the outside of first dynamic plate 4 is in contact with the outside of first distance sleeve 10, and first distance sleeve 10 also serves as the radial positioning of first dynamic plate 4. It is easy to understand that in actual application, first screw 9 is at least three and is distributed in a circumferential array, and each first screw 9 is sleeved with the above-mentioned first distance sleeve 10.

[0026] Alternatively, the fixed connection between the second flange 6 and the second moving plate 8 in the embodiment is as follows: the second flange 6 and the second moving plate 8 are connected through a second screw 11, and a second distance sleeve 12 for limiting the distance between the second flange 6 and the second moving plate 8 is sleeved on the second screw 11.

[0027] Alternatively, the outer diameter of the second moving plate 8 is equal to the outer diameter of the stator 5, and the outer diameter of the first flange 2 is equal to the outer diameter of the stator 5 in the embodiment, so that the diameter difference does not affect the appearance.

[0028] Alternatively, the first flange 2 is provided with a plurality of mounting holes in the circumferential direction in the embodiment, and mounting screws 13 are arranged in the mounting holes, and the mounting screws 13 are used for mounting the brake in use.

[0029] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A large torque dual rotor thin profile de-energized brake comprising a stator and a first rotor and a second rotor fixed to a shaft, characterized in that, The first flange, the first rotor and the first moving plate are arranged on the side of the stator in sequence in the direction close to the stator, the first flange is fixedly connected with the stator, and the first spring is arranged between the stator and the first moving plate; The inner wall of the stator is provided with a sink at the end close to the first moving plate, the second flange and the second stator are installed in the sink, the second rotor is clamped between the second flange and the bottom of the sink, the second moving plate is arranged on the side of the stator away from the first moving plate and is fixedly connected with the second flange, and the second spring is arranged between the stator and the second moving plate.

2. The large torque dual rotor thin profile de-energized brake of claim 1 wherein, The first flange and the stator are connected through a first screw, and a first distance sleeve for limiting the distance between the first flange and the stator is sleeved on the first screw.

3. The large torque dual rotor thin profile de-energized brake of claim 2, wherein, The outer side of the first moving plate is in contact with the outer side of the first distance sleeve.

4. The large torque dual rotor thin profile de-energized brake of claim 1 wherein, The second flange and the second moving plate are connected through a second screw, and a second distance sleeve for limiting the distance between the second flange and the second moving plate is sleeved on the second screw.

5. The large torque dual rotor thin profile de-energized brake of any one of claims 1-4, wherein, The outer diameter of the second moving plate is equal to the outer diameter of the stator.

6. The large torque dual rotor thin profile de-energized brake of any one of claims 1-4, wherein, The outer diameter of the first flange is equal to the outer diameter of the stator.

7. The large torque dual rotor thin profile de-energized brake of any one of claims 1-4, wherein, The stator is provided with a first blind hole for installing the first spring and a second blind hole for installing the second spring.

8. The large torque dual rotor thin profile de-energized brake of any one of claims 1-4, wherein, The first flange is provided with a plurality of mounting holes in the circumferential direction, and mounting screws are arranged in the mounting holes.

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