CN219865988U - Motor power-off brake - Google Patents
Motor power-off brake Download PDFInfo
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- CN219865988U CN219865988U CN202223520496.4U CN202223520496U CN219865988U CN 219865988 U CN219865988 U CN 219865988U CN 202223520496 U CN202223520496 U CN 202223520496U CN 219865988 U CN219865988 U CN 219865988U
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- armature
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- power
- rotating shaft
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- 238000004804 winding Methods 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000013011 mating Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model belongs to the technical field of motor braking, and particularly relates to a motor power-off brake, which comprises a brake base, an armature and a brake disc, wherein a winding assembly is arranged on the brake base; when the winding assembly is in a non-energized state, the compression spring pushes the armature to be away from the brake base for a certain distance, the brake lug reaches a position clamped with the brake tooth, and the movement of the brake disc is clamped by the armature; when the winding assembly is in an electrified state, the winding assembly attracts the armature to be close to the brake base, and the brake lug is separated from a position clamped with the brake tooth. The utility model adopts a light and compact design, and can quickly and effectively brake the rotor when the motor is in power failure, thereby increasing the braking effectiveness of the motor brake and reducing the necessary space occupation rate and the necessary weight.
Description
Technical Field
The utility model belongs to the technical field of motor braking, and particularly relates to a motor power-off brake.
Background
With the rapid development of electronic technology, brake products are increasingly widely applied, and structural design of the brake products is very important. At present, most of motor brakes are of friction plate type structures, the size is large, the friction force is small, the friction plates are used for friction braking, the service life is limited, and the braking reliability is low. Therefore, the electromagnetic brake cannot be limited to the traditional brake structure, and the development of the electromagnetic power-off brake with a new structure is particularly important.
Disclosure of Invention
In view of the above, the utility model provides a motor power-off brake, which adopts a lightweight compact design, can rapidly and effectively brake a rotor when a motor is powered off, increases the braking effectiveness of the motor brake, and reduces the necessary space occupation rate and the necessary weight.
In order to achieve the technical purpose, the utility model adopts the following specific technical scheme:
a motor power-off brake, comprising:
the brake base is sleeved on the periphery of the rotating shaft of the motor and provided with a matching hole axially parallel to the rotating shaft;
the armature is sleeved on the periphery of the rotating shaft, is fixedly arranged with the stator of the motor, and is fixedly provided with a sliding block on one surface and a braking lug on the other surface; at least a portion of the slider is slidably mounted within the mating aperture; a compression spring is arranged in the matching hole; one end of the compression spring acts on the bottom of the matching hole, and the other end acts on the sliding block;
the brake disc is sleeved on the periphery of the rotating shaft, is arranged at one end of the armature far away from the brake base, is fixed with the rotating shaft, is arranged at a certain distance from the brake base, and is provided with brake teeth on one surface close to the armature; the brake teeth are arranged in a clutch way with the brake convex blocks;
wherein: a winding component is arranged on the brake base; when the winding assembly is in a non-energized state, the compression spring pushes the armature to be away from the brake base for a certain distance, the brake lug reaches a position clamped with the brake tooth, and the movement of the brake disc is clamped by the armature; when the winding assembly is in an electrified state, the winding assembly attracts the armature to be close to the brake base, and the brake lug is separated from a position clamped with the brake tooth.
Further, the power-off brake further comprises a fixed plate; the fixed plate is arranged at one end of the armature far away from the brake base and used for limiting the sliding block to completely separate from the matching hole when the armature moves in the direction far away from the brake base.
Further, the stator plate and the stator are fixed to each other.
Further, the number of the matching holes is not less than two groups, and the matching holes are uniformly distributed along the circumferential direction of the rotating shaft.
Further, the number of the sliding blocks corresponds to the number of the matching holes, and the sliding blocks are uniformly distributed along the axial direction of the rotating shaft.
Further, the brake disc is gear-shaped, and the brake teeth are gear teeth of the brake disc.
Further, the braking convex blocks are in a plurality of groups and are uniformly distributed along the circumferential direction of the rotating shaft.
Further, in the axial projection of the rotating shaft, a projection shape of at least a portion of the brake projection is the same as a projection shape of a backlash of the brake disc.
Furthermore, the brake base, the armature and the fixed plate are all provided with coincident mounting notches in the axial projection of the rotating shaft.
Further, the mounting notch is used for limiting the brake base, the armature and the stator plate from rotating around the axial direction of the rotating shaft when the power-off brake is mounted on the motor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a front view of a motor power-off brake in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic left-view of a motor power-off brake according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of the relationship between the armature and the brake base in accordance with an embodiment of the utility model;
fig. 4 is a schematic structural view of an armature in an embodiment of the utility model;
FIG. 5 is a schematic view of a brake disc according to an embodiment of the present utility model;
wherein: 1. a key; 2. a brake base; 21. a mating hole; 3. a winding assembly; 4. a support post; 5. an armature; 51. a slide block; 6. a brake disc; 7. a hexagonal thin nut; 8. a fixed plate; 9. slotted countersunk head screws; 10. compressing the spring.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, any of the methods set forth herein may be used
What number of aspects implement an apparatus and/or practice a method. Additionally, such apparatus may be implemented and/or such method practiced using other structure and/or functionality in addition to one or more of aspects 0 described herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the disclosure by way of illustration, and only the components related to the disclosure are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
5 additionally, in the following description, specific details are provided for a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
In one embodiment of the present utility model, a motor power-off brake is provided, as shown in fig. 1-5, comprising:
the brake base 2 is sleeved on the periphery of a rotating shaft of the motor and provided with a matching hole 21 axially parallel to the rotating shaft;
the armature 5 is sleeved on the periphery of the rotating shaft, is fixedly arranged with the stator of the motor, and is fixedly provided with a sliding block 51 on one surface and a braking lug on the other surface; at least a portion of the slider 51 is slidably mounted within the fitting 5 aperture 21; a compression spring 10 is arranged in the matching hole 21; one end of the compression spring 10 acts on the bottom of the fitting hole 21 and the other end acts on the slider 51, (as shown in fig. 3, the compression spring 10 is omitted in the drawing);
the brake disc 6 is sleeved on the periphery of the rotating shaft, is arranged at one end of the armature 5 far away from the brake base 2, is fixed with the rotating shaft, is arranged at a certain distance from the brake base 2, and is provided with brake teeth on one surface close to the armature 5;
the braking teeth are arranged in a clutch way with the braking convex blocks;
0 wherein: the brake base 2 is provided with a winding assembly 3; when the winding assembly 3 is in the de-energized state,
the compression spring 10 pushes the armature 5 to be away from the brake base 2 for a certain distance, the brake lug reaches a position clamped with the brake tooth, and the movement of the brake disc 6 is clamped by the armature 5; when the winding assembly 3 is in the energized state, the winding assembly 3 attracts the armature 5 to approach the brake base 2, and the brake bump is moved away from engagement with the brake tooth.
In this embodiment, the power-off brake further comprises a fixed plate 8; the fixed plate 8 is disposed at an end of the armature 5 away from the brake 5 base 2, and is used for limiting the sliding block 51 to completely separate from the matching hole 21 when the armature 5 moves in a direction away from the brake base 2.
In the present embodiment, the stator plate 8 and the stator are fixedly disposed with each other.
In the present embodiment, the number of the fitting holes 21 is not less than two, and is uniformly distributed along the circumferential direction of the rotation shaft.
In the present embodiment, the number of the sliders 51 corresponds to the number of the fitting holes 21, and are uniformly distributed in the axial direction of the rotation shaft.
In the present embodiment, the brake disc 6 is gear-shaped, and the brake teeth are gear teeth of the brake disc 6.
In this embodiment, the brake protrusions are multiple groups and are uniformly distributed along the circumferential direction of the rotating shaft.
In the present embodiment, in the axial projection of the rotation shaft, the projected shape of at least a part of the brake projection is the same as the projected shape of the backlash of the brake disk 6.
In this embodiment, the brake base 2, the armature 5 and the stator 8 are provided with mounting notches that overlap in the axial projection of the rotating shaft.
In this embodiment, the mounting notch is used to limit the rotation of the brake base 2, armature 5, and stator 8 about the axial direction of the shaft when the power-off brake is mounted on the motor.
The fitting hole 21 of the present embodiment is a cylindrical hole. The brake base 2 is provided with a space for accommodating the winding assembly 3, and the winding assembly 3 is magnetically isolated from the armature 5.
In some embodiments, the power-off brake further comprises a support post 4, and the brake base 2, the armature 5, the fixed plate 8 and the brake disc 6 are all sleeved on the periphery of the support post 4. The function of the test point brake can be realized after the support column 4 is coaxially and fixedly connected with the rotating shaft.
In this embodiment, the brake base 2, armature 5 and stator 8 are all centrally apertured and do not contact the shaft or strut 4 to allow the shaft or strut 4 to pass through; the center opening of the stator plate 8 is larger than the brake disc 6, and the brake disc 6 is arranged in the center opening of the stator plate 8, so that the power-off brake of the embodiment is more space-saving.
The fixed relationship of the brake base 2, the armature 5, and the fixed plate 8 with the rotating shaft can be realized based on an intermediate assembly fixedly connected with the motor housing, and the specific structure of the intermediate assembly is not limited according to the specific shape of the motor.
The brake disc 6 of the present embodiment achieves rotation restriction between the brake disc 6 and the stay 4 based on the key 1; axial fixation between the brake disc 6 and the strut 4 is achieved based on the diameter variation of the strut 4 and the threaded engagement of the hexagonal thin nut 7 with the end of the strut 4.
The fixed plate 8 and the armature 5 are fixed by the slotted countersunk head screw 9, and when the armature 5 moves to the end far away from the brake base 2 and most of the brake convex blocks are inserted between gear teeth, the fixed plate 8 is contacted with the shell of the motor, and the excessive displacement of the armature 5 is limited to cause the sliding block 51 to be separated from the matching hole 21.
The working process of the power-off brake of the embodiment is as follows:
when the motor is electrified, the winding component 3 (electromagnetic coil) which adopts the same power supply with the motor coil works, the winding component 3 adsorbs the armature 5, the brake lug cannot interfere the rotation of the brake disc 6 under the action of the compression spring 10, and the motor normally rotates. When the motor is in power failure, the winding assembly 3 stops working, the brake lug of the armature 5 interferes with the brake disc 6 under the action of the compression spring 10, the brake disc 6, the support column 4 and the rotating shaft simultaneously stop rotating, and the power failure brake of the embodiment is completed on the power failure brake of the motor.
The present embodiment can reduce the overall weight by reducing unnecessary structure and can reduce the iron loss of the brake.
In the electromagnetic power-off brake, a brake base 2 and an armature 5 are provided with small circular concave holes for positioning and fixing, an upper pore is matched with a fixed column of the armature 5, the armature 5 can move in a fixed direction, the axial direction of a spring can be compressed freely, and no friction resistance exists in the radial direction.
The brake base 2 and the armature 5 are matched with the spring through a fixed table below the armature 5, and the fixed table of the armature 5 is inserted into a concave hole of the brake base 2, so that radial movement is prevented, and fixation is enhanced; the brake disc 6 adopts a plurality of trapezoid-like protrusions to mechanically brake, so that the braking reliability is ensured.
The armature 5 is fixed through the fixed plate 8, and the distance between the armature 5 and the fixed plate 8 is fixed through a column hole below the fixed plate 8, so that the positioning of the attraction distance of the armature 5 is realized; the brake disc 6 adopts a gear-like structure, the height of the brake trapezoidal table of the armature 5 is slightly lower than the thickness of the brake disc 6, the tooth width is slightly smaller than the trapezoidal protrusion of the armature 5, and the phenomenon of braking locking and clamping stagnation caused by small variation of suction is prevented. The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the disclosure are intended to be covered by the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A motor power-off brake, comprising:
the brake base is sleeved on the periphery of the rotating shaft of the motor and provided with a matching hole axially parallel to the rotating shaft;
the armature is sleeved on the periphery of the rotating shaft, is fixedly arranged with the stator of the motor, and is fixedly provided with a sliding block on one surface and a braking lug on the other surface; at least a portion of the slider is slidably mounted within the mating aperture; a compression spring is arranged in the matching hole; one end of the compression spring acts on the bottom of the matching hole, and the other end acts on the sliding block;
the brake disc is sleeved on the periphery of the rotating shaft, is arranged at one end of the armature far away from the brake base, is fixed with the rotating shaft, is arranged at a certain distance from the brake base, and is provided with brake teeth on one surface close to the armature; the brake teeth are arranged in a clutch way with the brake convex blocks;
wherein: a winding component is arranged on the brake base; when the winding assembly is in a non-energized state, the compression spring pushes the armature to be away from the brake base for a certain distance, the brake lug reaches a position clamped with the brake tooth, and the movement of the brake disc is clamped by the armature; when the winding assembly is in an electrified state, the winding assembly attracts the armature to be close to the brake base, and the brake lug is separated from a position clamped with the brake tooth.
2. The power-off brake of claim 1, further comprising a stator plate; the fixed plate is arranged at one end of the armature far away from the brake base and used for limiting the sliding block to completely separate from the matching hole when the armature moves in the direction far away from the brake base.
3. The power-off brake of claim 2, wherein the stator plate and the stator are fixedly disposed with respect to each other.
4. A power-off brake according to claim 3, wherein the number of the fitting holes is not less than two, and is uniformly distributed along the circumferential direction of the rotating shaft.
5. The power-off brake of claim 4, wherein the number of the sliders corresponds to the number of the fitting holes, and is uniformly distributed along an axial direction of the rotating shaft.
6. The power-off brake of claim 5, wherein the brake disc is gear-like and the brake teeth are gear teeth of the brake disc.
7. The brake of claim 6, wherein the plurality of sets of brake projections are evenly distributed along the circumference of the shaft.
8. The power-off brake of claim 7, wherein a projected shape of at least a portion of the brake projection is the same as a projected shape of a backlash of the brake disk in an axial projection of the rotating shaft.
9. The brake of claim 8, wherein the brake base, armature, and stator are each provided with mounting notches that overlap in an axial projection of the shaft.
10. The power-off brake of claim 9, wherein the mounting notch is configured to limit rotation of the brake base, armature, and stator plate about the axis of rotation when the power-off brake is mounted on a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520496.4U CN219865988U (en) | 2022-12-27 | 2022-12-27 | Motor power-off brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520496.4U CN219865988U (en) | 2022-12-27 | 2022-12-27 | Motor power-off brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865988U true CN219865988U (en) | 2023-10-20 |
Family
ID=88347944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223520496.4U Active CN219865988U (en) | 2022-12-27 | 2022-12-27 | Motor power-off brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865988U (en) |
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2022
- 2022-12-27 CN CN202223520496.4U patent/CN219865988U/en active Active
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