Permanent magnet electromagnetic brake

Abstract

The utility model relates to a permanent magnet electromagnetic brake which comprises a brake shell, a rotating shaft and a center shaft are sequentially installed in the brake shell from top to bottom, a fluted disc is arranged on the rotating shaft, a chain wheel is arranged on the center shaft, and the chain wheel swings back and forth along with rotation of the center shaft. The upper portion of the chain wheel is provided with a buckling portion buckled with the chain wheel, the two sides of the lower portion of the chain wheel are provided with a first magnet and a second magnet which are opposite in magnetic pole direction respectively, a framework is installed in the brake shell, a fixed iron core is installed in the center of the framework, one end of the fixed iron core is close to the first magnet or the second magnet, and the other end of the fixed iron core is close to the second magnet. A coil is wound on the framework, the coil is connected with a wire harness, and the wire harness extends out of the brake shell. Compared with a common electromagnetic brake, the electromagnetic brake has the advantages that braking and unlocking only need to be conducted once, the use power consumption is greatly reduced, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic brakes, in particular to a permanent magnet electromagnetic brake. Background Art

[0002] Generally, electromagnetic brakes are divided into two types: powered brakes and de-energized brakes. Powered brakes require continuous power supply to achieve braking, while de-energized brakes require continuous power supply to unlock. In order to reduce the power consumption of continuous power supply, the structure of the existing electromagnetic brake needs to be optimized. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a permanent magnet electromagnetic brake, which has the functions of unlocking by powering on and braking by another reverse powering on. The difference from the general electromagnetic brake is that only one powering on is required for braking and unlocking, which greatly reduces the power consumption and achieves energy saving and environmental protection.

[0004] The utility model solves the technical problem by adopting the following technical scheme: providing a permanent magnet electromagnetic brake, comprising a brake housing, wherein a rotating shaft and a central shaft are sequentially installed inside the brake housing from top to bottom, a toothed disc is arranged on the rotating shaft, a toothed disc is arranged on the central shaft, the toothed disc swings back and forth as the central shaft rotates, a buckling portion interlocked with the toothed disc is arranged on the upper part of the toothed disc, a magnet 1 and a magnet 2 with opposite magnetic pole directions are respectively installed on both sides of the lower part of the toothed disc, a skeleton is installed inside the brake housing, a fixed iron core is installed at the center of the skeleton, one end of the fixed iron core is close to the magnet 1 or the magnet 2, a coil is wound around the skeleton, a wiring harness is connected to the coil, and the wiring harness extends outside the brake housing.

[0005] As a supplement to the technical solution described in the utility model, the brake housing includes an outer shell and a cover installed on the outer shell.

[0006] As a supplement to the technical solution described in the utility model, the front end of the shell is open, and a plurality of mounting grooves are provided around the edge of the open mouth, and the outer edge of the cover is provided with an assembly part that cooperates with the mounting grooves.

[0007] As a supplement to the technical solution described in the utility model, the assembly portion and the installation groove are fixed by welding.

[0008] As a supplement to the technical solution described in the utility model, a bearing is installed at both ends of the central shaft and both ends of the rotating shaft, and the bearings at both ends are respectively fixed on the cover and the shell.

[0009] As a supplement to the technical solution described in the utility model, a chamber for accommodating magnet one and magnet two is opened at the lower part of the toothed disc, one side of the chamber is sealed by a cover plate, and two windows are opened on the other side of the chamber, and the two windows respectively expose part of magnet one and magnet two to the outside.

[0010] Beneficial effect: The utility model relates to a permanent magnet electromagnetic brake, which has the function of unlocking by powering on and braking by another reverse powering on. The difference from the general electromagnetic brake is that only one powering on is required for braking and unlocking, which greatly reduces the power consumption and achieves energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model after removing the cover;

[0013] Figure 3 It is a schematic diagram of the structure of the utility model after removing the cover and the tooth plate;

[0014] Figure 4 It is a schematic diagram of the structure of the toothed disc, magnet one and magnet two of the utility model;

[0015] Figure 5 It is a structural schematic diagram of the toothed disc of the utility model.

[0016] Illustration: 1. Shell, 2. Wiring harness, 3. Cover, 4. Assembly part, 5. Center axis, 6. Rotating axis, 7. Toothed plate, 8. Toothed plate, 9. Buckling part, 10. Frame, 11. Mounting groove, 12. Fixed iron core, 13. Bearing, 14. Magnet 1, 15. Magnet 2, 16. Cover plate, 17. Chamber, 18. Window. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0018] The embodiment of the utility model relates to a permanent magnet electromagnetic brake, such as Figure 1-5As shown, it includes a brake housing, in which a rotating shaft 6 and a central shaft 5 are installed in sequence from top to bottom. A toothed disc 7 is arranged on the rotating shaft 6, and a toothed disc 8 is arranged on the central shaft 5. The toothed disc 8 swings back and forth as the central shaft 5 rotates. A buckling portion 9 is provided on the upper portion of the toothed disc 8 and is buckled with the toothed disc 7. A magnet 14 and a magnet 2 15 with opposite magnetic poles are respectively installed on both sides of the lower portion of the toothed disc 8. A skeleton 10 is installed in the brake housing, and a fixed iron core 12 is installed in the center of the skeleton 10. One end of the fixed iron core 12 is close to the magnet 14 or the magnet 2 15. A coil is wound on the skeleton 10, and a wiring harness 2 is connected to the coil. The wiring harness 2 extends outside the brake housing.

[0019] The brake housing comprises an outer shell 1 and a cover 3 mounted on the outer shell 1. The brake housing can be opened as required to facilitate component installation and subsequent maintenance.

[0020] The front end of the shell 1 is open, and a plurality of mounting grooves 11 are provided around the edge of the open opening. The outer edge of the cover 3 is provided with an assembly portion 4 that cooperates with the mounting groove 11. The assembly portion 4 cooperates with the mounting groove 11 to achieve the positioning of the shell 1 and the cover 3. The assembly portion 4 and the mounting groove 11 are fixed by welding to ensure that the shell 1 and the cover 3 are tightly assembled together.

[0021] A bearing 13 is installed at both ends of the central axis 5 and the rotating axis 6, and the bearings 13 at both ends are respectively fixed on the cover 3 and the shell 1; there are four bearings 13 in total, two of which are fixed on the cover 3, and the other two are fixed on the shell 1, and the rotating axis 6 is installed between the bearings 13 located at the upper part of the cover 3 and the bearings 13 located at the upper part of the shell 1, and the central axis 5 is installed between the bearings 13 located at the lower part of the cover 3 and the bearings 13 located at the lower part of the shell 1.

[0022] A chamber 17 for accommodating magnet 14 and magnet 2 15 is provided at the lower part of the toothed disc 8. One side of the chamber 17 is sealed by a cover plate 16, and the other side of the chamber 17 is provided with two windows 18, which respectively expose part of magnet 14 and magnet 2 15 to the outside.

[0023] like Figures 1 to 3As shown, the working description of the permanent magnet electromagnetic brake is as follows: the rotating shaft 6 is connected to the external rotating mechanism (i.e., the output shaft of the motor), the rotating shaft 6 is tightly connected with a toothed disc 7, and the central shaft 5 is tightly connected with a toothed disc 8. When the buckle connection part 9 on the toothed disc 7 is meshed with the toothed disc 8, braking can be achieved, and vice versa, the buckle connection part 9 on the toothed disc 7 is disengaged from the toothed disc 8 to unlock. Two magnets are installed at the lower part of the toothed disc 8, namely magnet one 14 and magnet two 15. The NS polarity directions of the two magnets are arranged in opposite directions. When the coil is energized, magnetic poles will be generated on the fixed iron core 12. When the polarity of the fixed iron core 12 and the magnet surface close to the magnet are opposite, they will attract each other, and when the polarity is the same, they will repel each other. When the coil is powered off, the magnetic poles on the fixed iron core 12 gradually disappear, but the magnet close to it will still attract the fixed iron core 12 and maintain the braking or unlocking state. The wiring harness 2 is connected to the powered device. When the coil is energized in the forward direction, a magnetic pole in one direction will be generated on the fixed iron core 12. When the coil is energized in the reverse direction, another magnetic pole in another direction will be generated on the fixed iron core 12, thereby controlling the sprocket 7 to swing back and forth, achieving the purpose of switching between braking and unlocking. At the same time, with the central axis 5 as the fulcrum, the long arm is from the swinging position of the magnet to the central axis 5, and the short arm is from the meshing position of the sprocket 8 to the central axis 5, a lever structure can be realized, and unlocking or braking can be achieved with less power.

[0024] The brake of the utility model has the functions of unlocking by powering on and braking by another reverse powering on. It is different from the general electromagnetic brake in that only one powering on is required for braking and unlocking, which greatly reduces the power consumption and realizes energy saving and environmental protection.

[0025] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0028] The above is a detailed introduction to a permanent magnet electromagnetic brake provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A permanent magnet electromagnetic brake, comprising a brake housing, characterized in that: A rotating shaft (6) and a central shaft (5) are sequentially installed inside the brake housing from top to bottom, a toothed disc (7) is arranged on the rotating shaft (6), and a toothed disc (8) is arranged on the central shaft (5). The toothed disc (8) swings back and forth as the central shaft (5) rotates. A buckling portion (9) that is buckled with the toothed disc (7) is provided on the upper part of the toothed disc (8). A magnet 1 (14) and a magnet 2 (15) with opposite magnetic poles are respectively installed on both sides of the lower part of the toothed disc (8). A frame (10) is installed inside the brake housing, and a fixed iron core (12) is installed in the center of the frame (10). One end of the fixed iron core (12) is close to the magnet 1 (14) or the magnet 2 (15). A coil is wound on the frame (10), and a wiring harness (2) is connected to the coil. The wiring harness (2) extends outside the brake housing.

2. A permanent magnet electromagnetic brake according to claim 1, characterized in that: The brake housing comprises a shell (1) and a cover (3) mounted on the shell (1).

3. A permanent magnet electromagnetic brake according to claim 2, characterized in that: The front end of the shell (1) is open, and a plurality of mounting grooves (11) are provided around the edge of the open opening. The outer edge of the cover (3) is provided with an assembly portion (4) that matches the mounting grooves (11).

4. A permanent magnet electromagnetic brake according to claim 3, characterized in that: The assembly portion (4) and the installation groove (11) are fixed by welding.

5. A permanent magnet electromagnetic brake according to claim 2, characterized in that: Both ends of the central shaft (5) and both ends of the rotating shaft (6) are equipped with a bearing (13), and the bearings (13) at both ends are fixed on the cover (3) and the housing (1) respectively.

6. A permanent magnet electromagnetic brake according to claim 1, characterized in that: The lower part of the toothed disc (8) is provided with a chamber (17) for accommodating magnet one (14) and magnet two (15); one side of the chamber (17) is sealed by a cover plate (16); the other side of the chamber (17) is provided with two windows (18); the two windows (18) respectively expose part of magnet one (14) and magnet two (15) to the outside.

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