制动电机
By using a toroidal winding and a non-magnetic adapter ring in the electromagnetically operated brake, the problem of magnetic leakage is solved, enabling compact and efficient operation of the brake and magnetic shielding of the joystick components, reducing the space required for manual release.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SEW-MOTORS (SUZHOU) CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing electromagnetically operated brakes suffer from magnetic leakage, which reduces their working efficiency.
The braking device incorporates an energized annular winding within its magnet, and an adapter ring separates the magnet from the bearing cover. The brake block bracket is connected to the rotor shaft, the armature plate is connected to the magnet, and an elastic element provides elastic force. The push rod is connected to the armature plate, and the control lever assembly is separated from the bearing cover. The adapter ring is made of a non-magnetic material to shield the magnetic field.
The compact design reduces the structural space required for manual release, improves the operating efficiency of the brake, and effectively shields magnetic leakage, ensuring that the control lever components do not significantly conduct magnetic leakage.
Smart Images
Figure CN224520863U_ABST
Abstract
Claims
1. A brake motor, the brake motor comprising an electric motor with an electromagnetically operable braking device, The recess of the magnet in the braking device houses an energized toroidal winding. The adapter ring is axially positioned between the magnet and the bearing cover of the bearing that receives the motor rotor shaft, thus separating the magnet from the bearing cover. The brake block bracket is connected to the rotor shaft in a manner that prevents relative rotation but allows axial movement. The armature plate and the magnet are connected in a manner that prevents relative rotation but allows axial movement. The armature plates are arranged axially between the brake block support and the magnet. The brake block bracket is arranged axially between the armature plate and the bearing cap. A braking surface is formed on the bearing cap. The brake block of the brake block bracket facing the braking surface can be pressed against the braking surface by the armature plate. The armature plate is supported by an elastic element on the magnet and subjected to elastic force. Its features are, At least one push rod passing through the magnet is connected on one hand to a nut screwed onto the first threaded area of the push rod, and on the other hand to an armature plate. The lever passes through a first connecting plate area of the control lever assembly, which has a stop surface. The nut is provided to limit the control lever assembly. The adjusting screw, screwed into the threaded hole of the control lever assembly, supports the bearing cap and separates the control lever assembly from the bearing cap. The spring is fitted onto the pushrod, and the control lever assembly is positioned between the nut and the spring. The second push rod, connected to the armature plate, extends through the magnet and through the second plate area of the control lever assembly, which is also restrained by the second nut connected to the second push rod.
2. The brake motor according to claim 1, characterized in that, By extending an axially oriented bolt fixed in the magnet through a notch in the armature plate, the armature plate is connected to the magnet in a manner that prevents relative rotation but allows axial movement.
3. The braking motor of claim 1, wherein The push rod passes through the stepped hole in the magnet.
4. The braking motor of claim 1, wherein The tappet is connected to the armature plate by screwing the second threaded area of the tappet into the threaded hole of the armature plate.
5. The braking motor of claim 1, wherein, The spring element is a conical helical spring.
6. The brake motor according to any one of claims 1 to 5, characterized in that, The area covered by the joystick assembly in the axial direction includes, or overlaps with, the area covered by the adapter ring in the axial direction. and / or The radial outer periphery of the joystick assembly is arranged radially outside the radial outer periphery of the adapter ring. and / or The joystick components are made of ferromagnetic material, while the adapter ring is made of diamagnetic or paramagnetic material. and / or The adjusting screw is spaced apart from the stop surface in the axial direction with reference to the rotation axis of the rotor shaft, and also spaced apart from the stop surface in the circumferential direction with reference to the rotation axis of the rotor shaft.
7. The brake motor according to any one of claims 1 to 5, characterized in that, The first axial end region of the adapter ring of the brake motor, viewed in a direction parallel to the ring axis, is fitted onto the cylindrical outer peripheral region of the magnet of the braking device. The other axial end region of the adapter ring is fitted onto the cylindrical outer peripheral region of the motor bearing cover.
8. The brake motor according to any one of claims 1 to 5, characterized in that, The bearing cover houses a bearing for supporting the rotor shaft of the electric motor in a rotatable manner.
9. The brake motor according to claim 7, characterized in that, The first end face of the adapter ring abuts against the stepped portion formed on the magnet. The stepped portion is formed on the axial end of the outer peripheral region of the magnet, which has a cylindrical structure.
10. The brake motor according to claim 9, characterized in that, The second end face of the adapter ring abuts against the stepped portion formed on the bearing cap. The stepped portion on the bearing cap is formed on the axial end of the outer peripheral region of the cylindrical structure of the bearing cap.
11. The brake motor according to claim 10, characterized in that, The adapter ring is a hollow cylindrical shape. The two end faces of the adapter ring, viewed in the axial direction, are oriented parallel to each other and / or designed to be flat.
12. The brake motor according to any one of claims 1 to 5, characterized in that, The adapter ring aligns the braking device with the stator of the motor and defines the clearance area for the brake block support and armature plates. and / or The adapter ring serves as a magnetic shield between the magnet and the bearing cover. and / or The adapter ring is made of metal.
13. The brake motor according to claim 10, characterized in that, A first sealing ring is arranged between the adapter ring and the magnet, and the first sealing ring seals towards the inner edge of the stepped portion formed on the magnet. and / or A second sealing ring is arranged between the adapter ring and the bearing cap, and this second sealing ring seals towards the inner edge of the stepped portion formed on the bearing cap. and / or The magnet is made of ferromagnetic material, and / or the armature plate is made of ferromagnetic material, and / or the bearing cover is made of ferromagnetic material.
14. The brake motor according to any one of claims 1 to 5, characterized in that, The adapter ring is made of a different material than the magnet. The adapter ring is made of a different material than the armature plate, and / or the adapter ring is made of a different material than the bearing cap.
15. The brake motor according to any one of claims 1 to 5, characterized in that, The adapter ring is made of antimagnetic material. and / or The specific permeability of the adapter ring material is no higher than one percent of the specific permeability of the armature material and / or the magnet material.
16. The braking motor of claim 15, wherein, The antimagnetic material is non-magnetizable stainless steel.
17. The brake motor according to any one of claims 1 to 5, characterized in that, The adapter ring has radially through notches spaced apart from each other in the circumferential direction.
18. The brake motor according to any one of claims 1 to 5, characterized in that, The adapter ring surrounds the armature plate and brake block support of the braking device on the radially outer side.
19. The brake motor according to any one of claims 1 to 5, characterized in that, The internal teeth of the brake block bracket are fitted onto the external teeth of the annular drive component and mesh with the external teeth. The drive component is fitted onto the rotor shaft of the brake motor and connected to the rotor shaft in a manner that prevents relative rotation. The drive component and the rotor shaft are connected by a key. The axis of the annular winding is coaxial with the axis of rotation of the rotor shaft.
20. The brake motor according to any one of claims 1 to 5, characterized in that, When the toroidal winding is not energized, the first brake block among the brake blocks arranged on the brake block supports on both axial sides is pressed against the brake surface, while the armature sheet is pressed by the elastic element against the other brake block among the brake blocks arranged on the brake block supports on both axial sides. When the toroidal winding is energized, the armature piece overcomes the elastic force generated by the elastic element and is attracted to the magnet.