Double-sided electromagnetic brake

Abstract

The utility model relates to the technical field of brakes, and provides a double-sided electromagnetic brake, which comprises a rotating shaft, a stator, an armature, a rotor and a flange component, the stator, the armature, the rotor and the flange component are sequentially mounted, in a braking state, one side of the rotor is contacted with the flange component, the other side of the rotor is contacted with the armature, the rotating shaft is a step shaft, and the rotor is sleeved on a small-diameter section of the rotating shaft and circumferentially fixed. One end, close to the rotating shaft shoulder, of the rotor is provided with a sinking groove with the diameter larger than that of the large-diameter section of the rotor, and a first elastic piece is arranged between the bottom of the sinking groove and the rotating shaft shoulder; the end part of the small-diameter section of the rotating shaft is detachably connected with an adjusting piece, and the small-diameter section of the rotating shaft is sleeved with a second elastic piece which is pressed between the rotor and the adjusting piece. Through the combined action of the first elastic piece and the second elastic piece, gaps are kept between the rotor and the flange component and between the rotor and the armature, that is, the rotor is prevented from still making contact with a braking surface after braking is relieved, abrasion and heat dissipation are reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake, specifically, a double-sided electromagnetic brake. BACKGROUND

[0002] The double-sided electromagnetic brake is a kind of brake that braking torque is generated on both sides of rotor during braking, for example, the prior application of applicant with application number "2025201426999", and again, the prior art of applicant with publication number "CN221704260U", the brake can generate greater braking torque through two braking surfaces, and provide braking effect.However, when the brake is released, one side of the rotor is still in contact with the braking surface, which causes great wear and heat, affecting the service life of the brake. SUMMARY

[0003] The utility model aims at providing a double-sided electromagnetic brake to solve the above-mentioned defects of prior art.

[0004] The utility model realizes the following technical scheme:

[0005] A double-sided electromagnetic brake, comprising a rotating shaft and a stator, an armature, a rotor and a flange component installed in sequence, in the braking state, one side of the rotor is in contact with the flange component, the other side of the rotor is in contact with the armature, the rotating shaft is a stepped shaft, the rotor is sleeved on the small diameter section of the rotating shaft and is fixed in the circumferential direction, one end of the rotor close to the shaft shoulder is provided with a sink groove with a diameter larger than the large diameter section of the rotor, and a first elastic member is arranged between the bottom of the sink groove and the shaft shoulder;The small diameter section end of the rotating shaft is detachably connected with an adjusting member, and the small diameter section of the rotating shaft is sleeved with a second elastic member pressed between the rotor and the adjusting member.

[0006] Optionally, the small diameter section end of the rotating shaft is provided with threads, and the adjusting member is a nut.

[0007] Optionally, a gasket is arranged between the adjusting member and the second elastic member.

[0008] Optionally, the first elastic member is a disc spring, and the second elastic member is a spring.

[0009] Optionally, the flange component comprises a brake flange and a mounting seat, the brake flange is fixedly connected with the mounting seat, and the stator is connected with the mounting seat through a connecting screw.

[0010] Optionally, a positioning sleeve for limiting the distance between the stator and the mounting seat is arranged between the stator and the mounting seat, and the positioning sleeve is sleeved on the connecting screw.

[0011] Optionally, the side of the brake flange in contact with the rotor and the side of the armature in contact with the rotor are both provided with friction plates.

[0012] Optionally, a bearing is arranged between the rotating shaft and the mounting seat.

[0013] The technical scheme of the utility model has at least the following advantages and beneficial effects: in the utility model, in the state of releasing the brake, the first elastic member arranged causes the rotor to be subjected to the force moving towards the stator, the second elastic member arranged causes the rotor to be subjected to the force moving away from the stator, the first elastic member and the second elastic member jointly act to keep the gap between the rotor and the flange part and the gap between the rotor and the armature, that is, to avoid the rotor still contacting the brake surface after releasing the brake, reduce the abrasion and heat dissipation, and improve the service life. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A front view of the double-sided electromagnetic brake provided by the utility model is shown in the figure;

[0015] Figure 2 A front view of the double-sided electromagnetic brake provided by the utility model is shown in the figure; Figure 1 A-A sectional view of the double-sided electromagnetic brake provided by the utility model is shown in the figure;

[0016] Reference signs: 1-stator, 101-magnetic yoke, 102-coil, 103-return spring, 2-armature, 3-rotor, 4-flange part, 401-brake flange, 402-mounting seat, 5-first elastic member, 6-second elastic member, 7-adjusting member, 8-gasket, 9-friction plate, 10-bearing, 11-rotating shaft. DETAILED DESCRIPTION

[0017] Reference Figure 1 and Figure 2 A double-sided electromagnetic brake, comprising a rotating shaft 11 and sequentially arranged stator 1, armature 2, rotor 3 and flange part 4.

[0018] The stator 1 can adopt the structure commonly used in the art, generally, the stator 1 comprises a magnetic yoke 101 and a coil 102, the coil 102 is installed in the ring groove of the magnetic yoke 101, and the surface of the stator 1 close to the armature 2 is generally provided with a return spring 103. When power off, the armature 2 abuts against the rotor 3 under the action of the return spring 103, one side of the rotor 3 contacts the flange part 4, and the other side of the rotor 3 contacts the armature 2, thereby forming the brake; when the coil 102 is powered, the magnetic force generated causes the magnetic yoke 101 to attract the armature 2, thereby releasing the brake, and the return spring 103 stores the force at the same time.

[0019] As an option, the side of the brake flange 401 contacting the rotor 3 and the side of the armature 2 contacting the rotor 3 are both provided with a friction plate 9, that is, the friction plate 9 rubs against the rotor 3.

[0020] In the embodiment, the rotating shaft 11 is a stepped shaft, that is, the rotating shaft 11 is divided into a large-diameter section and a small-diameter section, and a shaft shoulder is formed between the large-diameter section and the small-diameter section. The rotor 3 is sleeved on the small-diameter section of the rotating shaft 11 and is circumferentially fixed, and the circumferential fixing manner is not limited, for example, the rotor 3 can be connected through spline connection or common flat key connection. The rotor 3 is provided with a sink groove at one end close to the shaft shoulder of the rotating shaft 11, the sink groove has a diameter larger than that of the large-diameter section of the rotor 3, and a first elastic member 5 is arranged between the bottom of the sink groove and the shaft shoulder of the rotating shaft 11. The small-diameter section of the rotating shaft 11 is detachably connected with an adjusting member 7, and the small-diameter section of the rotating shaft 11 is sleeved with a second elastic member 6 which is press-fitted between the rotor 3 and the adjusting member 7.

[0021] In the state of releasing the brake, the first elastic member 5 arranged causes the rotor 3 to be subjected to a force moving towards the direction close to the stator 1, and the second elastic member 6 arranged causes the rotor 3 to be subjected to a force moving away from the stator 1, and the first elastic member 5 and the second elastic member 6 jointly act to keep a gap between the rotor 3 and the flange member 4 and between the rotor 3 and the armature 2, that is, to avoid the rotor 3 still contacting the brake surface after releasing the brake, reduce the abrasion and heat dissipation, and improve the service life.

[0022] In the embodiment, the small-diameter section of the rotating shaft 11 is provided with a thread, and the adjusting member 7 is a nut. As an option, the first elastic member 5 is a disc spring, and the second elastic member 6 is a spring, and it is worth noting that the first elastic member 5 is selected as a spring to facilitate reducing the axial dimension, and the second elastic member 6 is selected as a spring to facilitate compressing the second elastic member 6 through the adjusting member 7, so that the rotor 3 needs a greater force to rotate, thereby increasing the brake torque, and for the same reason, reducing the compression of the second elastic member 6 can also achieve the purpose of reducing the brake torque.

[0023] Further, a gasket 8 is arranged between the adjusting member 7 and the second elastic member 6, and the arrangement of the gasket 8 can avoid friction between the adjusting member 7 and the second elastic member 6 when the adjusting member 7 is screwed.

[0024] As an option, the flange member 4 in the embodiment includes a brake flange 401 and a mounting seat 402, the brake flange 401 is fixedly connected with the mounting seat 402, the fixed connection manner is preferably bonding, and of course the flange member 4 can also be connected through fasteners (such as screws, pins, etc.). The stator 1 is connected with the mounting seat 402 through a connecting screw, and further, a positioning sleeve for limiting the distance between the stator 1 and the mounting seat 402 is arranged between the stator 1 and the mounting seat 402, the positioning sleeve is sleeved on the connecting screw, and on this basis, a hole matched with the outer diameter of the positioning sleeve is arranged on the armature 2, that is, the positioning sleeve passes through the armature 2, thereby facilitating the positioning of the armature 2. It should be understood that in other embodiments, the flange member 4 can also be only the brake flange 401, and the brake flange 401 is fixedly connected with the stator 1.

[0025] Alternatively, a bearing 10 is provided between the shaft 11 and the mounting base 402, so that the brake can be directly mounted on the shaft 11, which is part of the power output shaft or connected to the power output shaft through a coupling. In other embodiments, the bearing 10 can of course not be provided between the shaft 11 and the mounting base 402, and it should be understood that in this case, the mounting base 402 needs to be provided with mounting holes to fix the mounting base 402 on the mounting surface through screws.

[0026] The preferred embodiments of the present application have been described above with the aid of drawings, and are not intended to limit the present application, and for those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-sided electromagnetic brake comprising a rotating shaft and sequentially mounted stator, armature, rotor and flange parts, in the braking state, one side of the rotor is in contact with the flange part and the other side of the rotor is in contact with the armature, characterized in that, The rotating shaft is a stepped shaft, the rotor is sleeved on the small-diameter section of the rotating shaft and is fixed in the circumferential direction, the end of the rotor close to the shaft shoulder is provided with a sink groove with a diameter larger than the large-diameter section of the rotor, and a first elastic member is arranged between the bottom of the sink groove and the shaft shoulder; the end of the small-diameter section of the rotating shaft is detachably connected with an adjusting member, and the small-diameter section of the rotating shaft is sleeved with a second elastic member which is press-fitted between the rotor and the adjusting member.

2. The dual-sided electromagnetic brake of claim 1, wherein, The end of the small-diameter section of the rotating shaft is provided with threads, and the adjusting member is a nut.

3. The dual-sided electromagnetic brake of claim 2, wherein, A gasket is arranged between the adjusting member and the second elastic member.

4. The dual-sided electromagnetic brake of claim 1, wherein, The first elastic member is a disc spring, and the second elastic member is a spring.

5. The dual-sided electromagnetic brake of claim 1, wherein, The flange part comprises a brake flange and a mounting seat, the brake flange is fixedly connected with the mounting seat, and the stator is connected with the mounting seat through a connecting screw.

6. The dual-sided electromagnetic brake of claim 5, wherein, A positioning sleeve for limiting the distance between the stator and the mounting seat is arranged between the stator and the mounting seat, and the positioning sleeve is sleeved on the connecting screw.

7. The dual-sided electromagnetic brake of claim 5, wherein, The side of the brake flange contacting the rotor and the side of the armature contacting the rotor are both provided with friction plates.

8. The dual-sided electromagnetic brake of claim 5, wherein, A bearing is arranged between the rotating shaft and the mounting seat.

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