Brake always open type one-way rotation motor

Abstract

This utility model discloses a unidirectional rotating electric motor with a normally open brake, comprising a motor, an electromagnetic braking mechanism, and a reduction mechanism. The motor includes a motor housing, on which a stator and a rotor are mounted. The stator is fixedly connected to the inner wall of the motor housing, and the rotating shafts at both ends of the rotor are rotatably connected to the center position of the motor housing via positioning bearings. The electromagnetic braking mechanism includes an electromagnet, an armature, a return spring, a friction plate, and an electromagnet end cover. The electromagnet end cover is installed at the end of the motor end cover, and the electromagnet is fixedly connected to the electromagnet end cover. The friction plate is fixedly connected to the end of the rotor shaft near the electromagnetic braking mechanism. The armature is disposed between the electromagnet and the friction plate, and the return spring is disposed between the armature and the electromagnet end cover. The motor windings of this utility model rotate unidirectionally when energized, automatically retain magnetism when the motor is de-energized and braked, and have accurate positioning, low production cost, simple structure, easy fault diagnosis, easy maintenance, and improved work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor equipment technology, and in particular to a brake-operated unidirectional rotating electric motor. Background Technology

[0002] Brake motors are widely used in various mechanical equipment and transmission devices that require rapid stopping and accurate positioning. Traditional brake motors use servo motors and private servo controllers to brake the motor, which is costly and complex to control. When a fault occurs, troubleshooting and equipment repair are time-consuming, resulting in high maintenance difficulty and low efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a brake-operated unidirectional rotating motor. When the motor windings are energized, the motor rotates in one direction. When the motor is de-energized, the brake is applied and the motor automatically retains its magnetism. The motor has accurate positioning, low production cost, simple structure, is easy to troubleshoot, easy to maintain, and improves work efficiency.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a normally open unidirectional rotating electric motor with a brake, comprising a motor, an electromagnetic braking mechanism, and a reduction mechanism. The motor includes a motor housing, a control box mounted outside the motor housing, a stator and a rotor mounted on the motor housing, the stator being fixedly connected to the inner wall of the motor housing, and the rotating shafts at both ends of the rotor being rotatably connected to the center position of the motor housing via positioning bearings; a motor end cover is mounted at one end of the motor housing, the electromagnetic braking mechanism is installed inside the motor end cover, and a reduction gear housing is mounted at the other end of the motor housing, the reduction mechanism being installed inside the reduction gear housing; the electromagnetic braking mechanism includes an electromagnet. The system comprises an armature, a return spring, a friction plate, and an electromagnet end cover. The electromagnet end cover is installed at the end of the motor end cover, and the electromagnet is fixedly connected to the electromagnet end cover. The friction plate is fixedly connected to the end of the rotor shaft near the electromagnetic braking mechanism. The armature is located between the electromagnet and the friction plate, and the return spring is located between the armature and the electromagnet end cover. The reduction mechanism includes a drive shaft, which is rotatably connected between the motor housing and the reducer housing via a positioning bearing. The end of the drive shaft passes through the reducer housing, and a reduction gear is fixedly connected to the drive shaft. A gear shaft is located at the end of the rotor shaft near the reduction mechanism, and the gear shaft meshes with the reduction gear.

[0005] Optionally, a limit shaft is provided on the side of the armature near the return spring, and a planar thrust bearing is sleeved on the limit shaft. The return spring is disposed between the planar thrust bearing and the electromagnet end cover.

[0006] Optionally, a handle bolt is threaded onto the end cap of the electromagnet.

[0007] Optionally, a balance iron is fixedly connected to the shaft at the end of the rotor away from the electromagnetic braking mechanism, and the balance iron is located inside the motor housing.

[0008] Optionally, both the gear shaft and the reduction gear are helical gears.

[0009] The normally open brake-type unidirectional rotating electric motor of this invention has the following advantages: (1) Under the control of the control box, the motor windings are energized and rotate in one direction. The motor brakes when the power is off and automatically retains magnetism when the power is on. The positioning is accurate and the production cost is low. The whole machine has a simple structure, which facilitates troubleshooting and improves work efficiency.

[0010] (2) The planar thrust bearing can prevent friction between the armature and the electromagnet when the motor rotor rotates, thus playing a protective role.

[0011] (3) The handle bolt can be manually screwed in to tighten the armature against the friction plate, thus achieving manual braking, and the motor will no longer rotate under the action of external force. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings, in which the following description will use the accompanying drawings as references. Figure 1 The direction in the middle is the reference.

[0015] like Figures 1-2 As shown, a normally open brake type unidirectional rotating electric motor includes a motor 1, an electromagnetic braking mechanism 2, and a reduction mechanism 3. The motor 1 includes a motor housing 9, and a control box 4 is mounted on the top of the motor housing 9. The control box 4 contains an AC contactor 5, a phase sequence controller 6, and wiring terminals, etc. The control box 4 can control the unidirectional rotation of the motor 1 windings when energized. The motor housing 9 houses a stator 7 and a rotor 8. The stator 7 is fixedly connected to the inner wall of the motor housing 9. The rotating shafts at both ends of the rotor 8 are rotatably connected to the center position of the motor housing 9 via positioning bearings 10. A balance iron 11 is fixedly connected to the rotating shaft on the right side of the rotor 8. The balance iron 11 is located inside the motor housing 9, and the balance iron 11 enables more flexible starting of the motor 1 and improves the stability of the motor 1.

[0016] A motor end cover 12 is installed on the left end of the motor housing 9. An electromagnetic braking mechanism 2 is installed inside the motor end cover 12. The electromagnetic braking mechanism 2 includes an electromagnet 13, an armature 14, a return spring 15, a friction plate 16, and an electromagnet end cover 17. The electromagnet end cover 17 is installed at the end of the motor end cover 12. The electromagnet 13 is fixedly connected to the electromagnet end cover 17. The friction plate 16 is fixedly connected to the end of the rotating shaft at the left end of the rotor 8. The armature 14 is located between the electromagnet and the friction plate 16. A limit shaft 18 is provided on the left side of the armature 14. A planar thrust bearing 19 is sleeved on the limit shaft 18. The return spring 15 is located between the planar thrust bearing 19 and the electromagnet end cover 17. The planar thrust bearing 19 can prevent the armature 14 from rubbing against the electromagnet 13 when the rotor 8 of the motor 1 rotates, thus playing a protective role. The electromagnet end cap 17 is threaded with a handle bolt 20, which can be manually screwed in to make the armature 14 press against the friction plate 16, thereby achieving manual braking. The motor 1 will no longer rotate under the action of external force.

[0017] A reducer housing 21 is mounted on the right end of the motor housing 9. A reduction mechanism 3 is installed inside the reducer housing 21. The reduction mechanism 3 includes a drive shaft 22, which is rotatably connected between the motor housing 9 and the reducer housing 21 via a positioning bearing 10. The right end of the drive shaft 22 passes through the reducer housing 21, and the drive shaft 22 is the output shaft of the motor 1. A reduction gear 23 is fixedly connected to the drive shaft 22. A gear shaft 24 is located at the right end of the rotor 8, meshing with the reduction gear 23. Both the gear shaft 24 and the reduction gear 23 are helical gears.

[0018] During normal operation, motor 1 and electromagnet 13 are energized. Electromagnet 13 attracts armature 14, causing armature 14 to separate from friction plate 16, and motor 1 normally drives transmission shaft 22 to rotate. When braking motor 1 is required, motor 1 and electromagnet 13 are de-energized. Electromagnet 13 releases armature 14, which, under the action of return spring 15, presses firmly against friction plate 16, braking motor 1. During maintenance, rotating handle bolt 20 pushes armature 14 inward, pressing it firmly against friction plate 16, manually braking motor 1. Motor 1 has a simple overall structure, accurate braking positioning, low production cost, is easy to troubleshoot and maintain, and improves work efficiency.

[0019] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A brake always-on type one-way rotation motor characterized by: The system includes a motor, an electromagnetic braking mechanism, and a reduction gear mechanism. The motor includes a motor housing, a control box mounted outside the motor housing, a stator and a rotor mounted on the motor housing, the stator being fixedly connected to the inner wall of the motor housing, and the rotor's two ends of the shaft being rotatably connected to the center of the motor housing via positioning bearings. A motor end cover is mounted on one end of the motor housing, and the electromagnetic braking mechanism is installed inside the motor end cover. A reduction gear housing is mounted on the other end of the motor housing, and the reduction gear mechanism is installed inside the reduction gear housing. The electromagnetic braking mechanism includes an electromagnet, an armature, a return spring, a friction plate, and an electromagnet end cover. The electromagnet end cover is mounted on the end of the motor end cover, and the electromagnet is fixedly connected to the electromagnet end cover. The friction plate is fixedly connected to the end of the rotor shaft near the electromagnetic braking mechanism. The armature is positioned between the electromagnet and the friction plate, and the return spring is positioned between the armature and the electromagnet end cover. The reduction gear mechanism includes a drive shaft, which is rotatably connected between the motor housing and the reduction gear housing via positioning bearings. The end of the drive shaft passes through the reduction gear housing, and a reduction gear is fixedly connected to the drive shaft. A gear shaft is positioned on the end of the rotor shaft near the reduction gear mechanism, and the gear shaft meshes with the reduction gear.

2. The brake always-on type one-way rotation motor according to claim 1, wherein: A limit shaft is provided on the side of the armature near the return spring, and a planar thrust bearing is sleeved on the limit shaft. The return spring is located between the planar thrust bearing and the electromagnet end cover.

3. The brake always-on type one-way rotation motor according to claim 2, wherein: The electromagnet end cap is threaded with a handle bolt.

4. The brake always-on type one-way rotation motor according to claim 1, wherein: A balance iron is fixedly connected to the shaft at the end of the rotor away from the electromagnetic braking mechanism. The balance iron is located inside the motor housing.

5. The brake always-on type one-way rotation motor according to claim 1, wherein: Both the gear shaft and the reduction gear are helical gears.

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