Double-protection electromagnetic brake

Abstract

The utility model relates to the technical field of electromagnetic brakes, in particular to a double-protection electromagnetic brake which comprises a first brake unit and a second brake unit which are axially connected in an overlapped mode, and the first brake unit comprises a sealing cover type magnet yoke, a first armature and a first rotor. The second brake unit comprises a hollow magnet yoke, a second armature, a second rotor and a flange plate which are arranged in sequence; the first armature and the first rotor are arranged in the sealing cover type magnet yoke, and the tail end of the sealing cover type magnet yoke abuts against the front end of the hollow magnet yoke; the tail end of the hollow magnet yoke abuts against the end face of one side of the flange plate, and the second rotor is clamped between the second armature and the flange plate. According to the utility model, the overall protection grade is improved, the corrosion of dust and water vapor to brake components and electromagnetic components of the brake is effectively isolated, and the normal brake effect is ensured.

Description

TECHNICAL FIELD

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

[0002] The double protection electromagnetic brake is an electromagnetic brake device achieving high braking torque through the superposition design of double braking elements, and the core lies in breaking through the performance bottleneck of the traditional brake through structural innovation. The double braking surface has a synergistic effect, and the brake adopts a superimposed structure of double friction plates and double armatures. When the excitation coil is energized, the magnetic field simultaneously drives the two groups of armatures to move towards the brake disc, forming double friction contact surfaces.

[0003] However, the sealing of the existing electromagnetic brake basically depends on the sealing ring or O-ring. After long-term use, these materials may fail due to wear, aging and chemical corrosion, thereby causing the protection performance to decrease. In addition, in a high-humidity environment, condensate water may appear inside the brake, causing electrical components to short circuit or metal components to corrode, especially in the case of large temperature changes. Secondly, although there is IP65 level protection, if exposed to a fine dust environment for a long time, such as a flour mill or a cement plant, dust may enter the inside of the brake through small gaps, causing the friction plate to wear or affecting the performance of the magnetic circuit. Therefore, in order to improve the protection performance of the brake, the design is made. SUMMARY

[0004] The utility model discloses a double protection electromagnetic brake to improve its protection performance, effectively isolate the corrosion of dust and water vapor to the brake braking component and electromagnetic component, guarantee normal brake effect.

[0005] The utility model discloses a double protection electromagnetic brake, including the first brake unit and the second brake unit that axial superposition is connected, the first brake unit includes the cover formula magnetic yoke, first armature and first rotor, the second brake unit includes hollow formula magnetic yoke, second armature, second rotor and flange disc that arrange in proper order, the first armature and first rotor are installed in the cover formula magnetic yoke, and the tail end of cover formula magnetic yoke is with the front end of hollow formula magnetic yoke is abutted, the tail end of hollow formula magnetic yoke is with one side end surface of flange disc is abutted, and the second rotor is clamped between second armature and flange disc.

[0006] Further, a sealing ring is further included, the outer surfaces of the cover formula magnetic yoke and the hollow formula magnetic yoke are provided with a threaded connection, and the sealing ring is sleeved between the cover formula magnetic yoke and the hollow formula magnetic yoke and matched with the threaded connection.

[0007] Further, the cover formula magnetic yoke and the hollow formula magnetic yoke are provided with a first sealing ring at the joint.

[0008] Further, a second sealing ring is arranged at the joint between the hollow magnetic yoke and the flange plate.

[0009] Further, a connecting piece is arranged between the cover magnetic yoke and the hollow magnetic yoke.

[0010] Further, the connecting piece is a mounting screw.

[0011] Further, the connecting piece is arranged through the middle part of a first hollow screw and a second hollow screw, one end of the first hollow screw is abutted against the end surface of the hollow magnetic yoke, and the other end of the first hollow screw is connected with the first armature thread; one end of the second hollow screw is abutted against the flange plate, and the other end of the second hollow screw is connected with the second armature thread.

[0012] Further, the inner holes of the first rotor and the second rotor are arranged with shaft sleeves, and the outer surfaces and the inner holes of the shaft sleeves are arranged with spline structures.

[0013] The technical scheme of the utility model has at least the following advantages and beneficial effects: the cover magnetic yoke and the hollow magnetic yoke are butted, the structure seals the large-area exposed part of the brake, the sealing member is arranged at the joint of the two brake units to enhance the sealing performance, the sealing ring is rotated to shield the joint of the cover magnetic yoke and the hollow magnetic yoke, and therefore the protection performance of the double brake is greatly improved, and the double brake is not easily affected by dust and moisture. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a tail end structure schematic view of the double protection electromagnetic brake in the utility model;

[0015] Figure 2 It is a sectional structure schematic view of A-A in the utility model; Figure 1

[0016] Figure 3 It is a local enlarged view of B in the utility model. Figure 2

[0017] Reference signs: 1-first brake unit, 11-cover magnetic yoke, 12-first armature, 13-first rotor, 2-second brake unit, 21-hollow magnetic yoke, 22-second armature, 23-second rotor, 24-flange plate, 3-sealing ring, 4-adapting thread, 5-first sealing ring, 6-second sealing ring, 7-connecting piece, 8-first hollow screw, 9-second hollow screw, 10-shaft sleeve. DETAILED DESCRIPTION

[0018] The following is further described in combination with specific embodiments, with reference to the drawings. Figures 1-3 ​​As shown, the embodiment is a double protection electromagnetic brake, comprising an axially superimposed first brake unit 1 and second brake unit 2, the first brake unit 1 comprising a cover type magnetic yoke 11, a first armature 12 and a first rotor 13; the second brake unit 2 comprising a hollow type magnetic yoke 21, a second armature 22, a second rotor 23 and a flange plate 24 arranged in sequence; the first armature 12 and the first rotor 13 are installed in the cover type magnetic yoke 11, and the tail end of the cover type magnetic yoke 11 abuts against the front end of the hollow type magnetic yoke 21; the tail end of the hollow type magnetic yoke 21 abuts against one side end face of the flange plate 24, and the second rotor 23 is clamped between the second armature 22 and the flange plate 24; specifically, since the cover type magnetic yoke 11 is adopted at the top of the brake, only the middle hole of the flange plate 24 can access the motor shaft, the tail end of the cover type magnetic yoke 11 abuts against and closes the front end of the hollow type magnetic yoke 21, and the first rotor 13 is clamped between the first armature 12 and the end face of the hollow type magnetic yoke 21, so that the first rotor 13 and the second rotor 23 can both realize double-sided brake contact, and have better brake effect, in addition, the first brake unit 1 and the second brake unit 2 can act alone or cooperatively, and the application scenarios are flexible.

[0019] Therefore, the structure of the electromagnetic brake makes it difficult for dust and water to enter the inside of the brake and contact the friction plate and the electromagnetic element, greatly improving the protection of the brake and effectively ensuring the long-term brake performance.

[0020] As shown, Figure 2 The embodiment also comprises a sealing ring 3, the outer surfaces of the cover type magnetic yoke 11 and the hollow type magnetic yoke 21 are provided with a matching thread 4, and the sealing ring 3 is sleeved between the cover type magnetic yoke 11 and the hollow type magnetic yoke 21 and cooperates with the matching thread 4; specifically, when the cover type magnetic yoke 11 and the hollow type magnetic yoke 21 are installed in abutment, the sealing ring 3 is first rotated on the cover type magnetic yoke 11, after the abutment port is well aligned, the sealing ring 3 is rotated so that half of it is at the cover type magnetic yoke 11 and half of it is at the hollow type magnetic yoke 21, and the sealing ring 3 covers the abutment joint, thereby further improving the protection of the brake.

[0021] As shown, Figure 3 In order to further improve the overall protection of the brake, the cover type magnetic yoke 11 and the hollow type magnetic yoke 21 are provided with a first sealing ring 5 at the joint in some embodiments; specifically, the end face of the cover type magnetic yoke 11 is provided with a pit groove for embedding the first sealing ring 5, and the first sealing ring 5 will be deformed by extrusion when abutting.

[0022] On the basis of the above, the second sealing ring 6 is installed at the joint of the hollow type magnetic yoke 21 and the flange plate 24 to close the gap between the hollow type magnetic yoke 21 and the flange plate 24, thereby improving the protection of this place.

[0023] As shown, Figure 2As shown, a connector 7 is connected between the capped magnetic yoke 11 and the hollow magnetic yoke 21. The connector 7 is a mounting screw. Specifically, the mounting screw is used to connect the capped magnetic yoke 11, the hollow magnetic yoke 21 and the flange 24 to form an integrated structure.

[0024] like Figure 2 As shown, this embodiment also includes a first hollow screw 8 and a second hollow screw 9. The connector 7 passes through the middle of the first hollow screw 8 and the second hollow screw 9. One end of the first hollow screw 8 abuts against the end face of the hollow magnetic yoke 21, and the other end of the first hollow screw 8 is threadedly connected to the first armature 12. One end of the second hollow screw 9 abuts against the flange 24, and the other end is threadedly connected to the second armature 22. Specifically, by rotating the first hollow screw 8 and the second hollow screw 9, the first armature 12 and the second armature 22 can be positioned, thereby adjusting the working gap between the two.

[0025] Alternatively, bushings 10 are installed in the inner holes of both the first rotor 13 and the second rotor 23, and the outer surface and inner hole of the bushings 10 are provided with spline structures.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-guard electromagnetic brake characterized by: The application relates to a brake unit, which comprises a first brake unit (1) and a second brake unit (2) connected in axial superposition, wherein the first brake unit (1) comprises a cover type magnetic yoke (11), a first armature (12) and a first rotor (13); the second brake unit (2) comprises a hollow type magnetic yoke (21), a second armature (22), a second rotor (23) and a flange plate (24) arranged in sequence; the first armature (12) and the first rotor (13) are arranged in the cover type magnetic yoke (11), and the tail end of the cover type magnetic yoke (11) abuts against the front end of the hollow type magnetic yoke (21); the tail end of the hollow type magnetic yoke (21) abuts against one side end face of the flange plate (24), and the second rotor (23) is arranged between the second armature (22) and the flange plate (24). The application further comprises a sealing ring (3), the outer surfaces of the cover type magnetic yoke (11) and the hollow type magnetic yoke (21) are provided with a connecting thread (4), and the sealing ring (3) is sleeved between the cover type magnetic yoke (11) and the hollow type magnetic yoke (21) and matched with the connecting thread (4). The cover type magnetic yoke (11) and the hollow type magnetic yoke (21) are provided with a first sealing ring (5) at the joint. The hollow type magnetic yoke (21) and the flange plate (24) are provided with a second sealing ring (6) at the joint.

2. The double shield electromagnetic brake of claim 1, wherein: The cover type magnetic yoke (11) and the hollow type magnetic yoke (21) are provided with a connecting piece (7) therebetween.

3. The double shield electromagnetic brake of claim 2, wherein: The connecting piece (7) is a mounting screw.

4. The double shield electromagnetic brake of claim 3, wherein: The application further comprises a first hollow screw (8) and a second hollow screw (9), the connecting piece (7) passes through the middle part of the first hollow screw (8) and the second hollow screw (9), one end of the first hollow screw (8) abuts against the end face of the hollow type magnetic yoke (21), and the other end of the first hollow screw (8) is threadedly connected with the first armature (12); one end of the second hollow screw (9) abuts against the flange plate (24), and the other end of the second hollow screw (9) is threadedly connected with the second armature (22).

5. The double shielded electromagnetic brake of claim 1, wherein: The inner holes of the first rotor (13) and the second rotor (23) are provided with shaft sleeves (10), and the outer surfaces and the inner holes of the shaft sleeves (10) are provided with spline structures.

6. The double shield electromagnetic brake of claim 5, wherein: ​ 7. The double shielded electromagnetic brake of claim 6, wherein: ​ ​ 8. The double shielded electromagnetic brake of claim 1, wherein: ​

Images