CN111628609B - Brake device and power assembly - Google Patents
Brake device and power assembly Download PDFInfo
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- CN111628609B CN111628609B CN201910149872.7A CN201910149872A CN111628609B CN 111628609 B CN111628609 B CN 111628609B CN 201910149872 A CN201910149872 A CN 201910149872A CN 111628609 B CN111628609 B CN 111628609B
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- 230000009467 reduction Effects 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The embodiment of the application provides a braking device and a power assembly, wherein the braking device (1) is provided with: a brake disk (15) disposed on one side of a first rotor disk (21) of the motor in the axial direction away from the stator; a brake pad (14) disposed on one side of the brake disk (15) in the axial direction away from the stator; an elastic member (11) disposed radially outward of the brake pad (14); a slider (18) that is arranged radially inside the brake pad (14) and is connected to the brake pad (14); and a solenoid valve body (19) fitted around the outer periphery of the slider (18), wherein the brake pad (14) has a projection (14 a) projecting in the axial direction toward the brake disk (15), and the projection (14 a) of the brake pad engages with the brake disk (15) when the brake device is braking. According to the embodiment of the application, the braking device is simple in structure, large in braking torque and high in braking reliability, and the volume occupied by the braking device can be saved.
Description
Technical Field
The application relates to the electromechanical field, in particular to a braking device and a power assembly.
Background
In automated equipment, a motive force is typically provided to movable components of the equipment by a motive assembly. The power module may have a motor and a reduction gear, wherein the reduction gear may be connected to an output end of a rotating shaft of the motor, the reduction gear transmits power of the rotating shaft of the motor through a transmission member such as a gear inside the reduction gear and outputs the power from an output shaft, and a rotation speed of the output shaft of the reduction gear may be smaller than a rotation speed of the rotating shaft of the motor.
The power module usually also has a braking device for stopping the rotation of the rotating shaft of the motor, so that the automation device is safe in operation.
In the prior art, the braking device can stop the rotation of the rotating shaft of the motor by two braking methods: the first way is to gradually stop the rotation of the rotating shaft of the motor by friction force; the second method is to lock the rotation shaft of the motor by a lock mechanism.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they are set forth in the background section of the present application.
Disclosure of Invention
The inventors of the present application have found that the above two modes of the conventional braking device have certain disadvantages, such as: for the mode using friction force, the braking torque is small, heat, dust and the like are easily generated in the braking process, the operation of the motor is adversely affected, if the influence is reduced, the braking device needs to be arranged outside the motor, but the volume of a power assembly is increased; for the mode using the locking mechanism, if the structure of the ratchet wheel and the pawl is adopted, two sets of the ratchet wheel and the pawl are required to be arranged for bidirectional locking, the braking device is complicated, and if the structure of the screw rod and the gear is adopted, the locking mechanism cannot be installed inside the motor due to the problems of speed reduction ratio, space and the like.
In order to solve at least one of the above problems or other similar problems, the present application provides a brake device and a power assembly, the brake device being disposed on one axial side of a rotor disk of an axial flux motor, and braking the rotor disk of the motor by engagement of a brake disk and a brake pad. Therefore, the structure of the braking device is simple, the braking torque is large, the braking reliability is high, and the volume occupied by the braking device can be saved.
According to an aspect of the embodiments of the present application, there is provided a brake device mounted to a motor for braking the motor, the motor 2 having: a rotation shaft 27 rotating around the center axis; a first rotor 22 disposed radially outward of the rotation shaft; a stator 23 disposed on one axial side of the first rotor; and a first rotor disk 21 disposed on the other axial side of the first rotor from the stator; the brake device 1 includes: a brake disk 15 disposed on an axial side of the first rotor disk 21 remote from the stator; a brake pad 14 disposed on an axial direction side of the brake disk 15 away from the stator; an elastic member 11 disposed radially outward of the brake pad 14; a slider 18 disposed radially inward of the brake pad 14 and connected to the brake pad 14; and a solenoid valve body 19 fitted around an outer periphery of the slider 18, wherein the brake pad 14 has a projection 14a projecting in the axial direction toward the brake disk 15, and the projection 14a of the brake pad engages with the brake disk 15 when the brake device is braking.
According to another aspect of the embodiment of the present application, a recessed portion is formed on the outer periphery of the brake disk 15, and the protruding portion 14a of the brake pad engages with the recessed portion on the outer periphery of the brake disk 15 when the brake device is braking.
According to another aspect of the present embodiment, the recessed portion is recessed radially inward from an outer edge of the brake disk 15.
According to another aspect of the embodiments of the present application, wherein on a plane perpendicular to the central axis, the shape of the recess is a triangle, a quadrangle, or other shapes composed of line segments and/or curves.
According to another aspect of the present embodiment, wherein the brake disc 15 is formed separately from the first rotor disc 21, and is fixed by a fixing element; alternatively, the brake disk 15 and the first rotor disk 21 are integrally formed.
According to another aspect of the embodiment of the present application, wherein the extension direction of the slider 18 coincides with the extension direction of the brake pad 14, the brake pad 14 moves along the extension direction of the brake pad 14.
According to another aspect of the embodiment of the present application, wherein one end of the brake pad 14 in the extending direction is pivotally mounted, and the other end of the brake pad 14 in the extending direction is connected to the slider 18, the elastic member 11 generates a torque for rotating the brake pad 14 about the one end.
According to another aspect of the present embodiment, wherein the material of the brake disc 15 comprises iron or aluminum.
According to another aspect of the present embodiment, wherein the elastic member 11 comprises a spring.
According to another aspect of the embodiments of the present application, there is provided a power assembly including the brake device according to any one of the above embodiments, and a motor, wherein the brake device is mounted to the motor.
According to another aspect of the present embodiment, wherein the motor further has a second rotor 25, the stator 23 is located between the first rotor 22 and the second rotor 25 in the axial direction.
According to another aspect of the embodiment of the present application, wherein the motor has a cover 20 covering the first rotor 22, the brake pads 14 and the solenoid valve body 19 are mounted to the cover 20 of the motor.
According to another aspect of an embodiment of the present application, wherein the power assembly further has: and a speed reduction device disposed on a side of the stator that is away from the first rotor 22 in the axial direction, wherein the speed reduction device is connected to an output end of the rotating shaft of the motor, and a rotating speed output by the speed reduction device is less than a rotating speed of the rotating shaft.
The beneficial effect of this application lies in: the braking device brakes the rotor disc of the motor through the meshing of the brake disc and the brake block, so that the braking device has a simple structure, large braking torque and high braking reliability; in addition, the braking device is arranged on one axial side of the rotor disc of the axial flux motor, so that the volume occupied by the braking device can be saved.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a brake device of embodiment 1 of the present application installed on a motor and the brake device is located at a braking position;
FIG. 2 is a schematic view of the brake apparatus of FIG. 1 in a released position;
fig. 3 is another sectional view of the brake device of embodiment 1 of the present application;
fig. 4 (a) is a perspective view showing an internal structure of the braking apparatus of fig. 1;
fig. 4 (b) is a perspective view illustrating an internal structure of the braking device of fig. 3;
fig. 5 (a) is an assembly view of the brake pad 14 and the solenoid valve body 19 mounted on the cover 20 of the motor 2;
fig. 5 (b) is a schematic view of the brake pad 14 and the solenoid valve body 19 being attached to the lid 20 of the motor 2;
fig. 6 is another perspective view of the internal structure of the brake device according to embodiment 1 of the present application;
fig. 7 (a) is an assembly view of the brake shoe 14 and the solenoid valve body 19 of fig. 6 mounted on the cover body 20 of the motor 2;
fig. 7 (b) is a schematic view of the brake pad 14 and the solenoid valve body 19 of fig. 6 mounted on the lid 20 of the motor 2;
FIG. 8 is another schematic view of the braking device of the present embodiment mounted to a motor with the braking device in a braking position;
fig. 9 is a schematic view of the brake apparatus of fig. 8 in a release position.
Detailed Description
The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, or groups, but do not preclude the presence or addition of one or more other features, elements, components, or groups thereof.
In the embodiments of the present application, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "the" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "according to" should be understood as "according at least in part to \8230;" based on "should be understood as" based at least in part on \8230; "unless the context clearly indicates otherwise.
In addition, in the following description of the embodiments of the present application, for convenience of description, a direction in which the central axis extends is referred to as an "axial direction"; in the "axial direction", the direction in which the first rotor points toward the stator is called the "front" direction, and the direction opposite to the "front" direction is the "rear" direction; a radial direction centered on the central axis is referred to as a "radial direction"; the direction around this central axis is referred to as "circumferential direction".
Example 1
The embodiment 1 of the present application provides a brake device.
Fig. 1 is a schematic view of the braking device of the present embodiment mounted on a motor and the braking device located at a braking position. As shown in fig. 1, the brake device 1 may be attached to the motor 2, and the brake device 1 may be capable of braking the motor 2 when the brake device 1 is located at the braking position.
As shown in fig. 1, the motor 2 may be an axial flux motor, wherein the motor 2 may have: a rotation shaft 27 rotating around the center axis C; a first rotor 22 disposed radially outward of the rotating shaft 27, the first rotor 22 being, for example, a magnet that generates magnetic flux in the axial direction; a stator 23 disposed on one axial side of the first rotor 22, for example, the stator 23 is disposed on the front side of the first rotor 22; the first rotor disk 21 is disposed on the other side of the first rotor 22 in the axial direction from the stator 23, and the first rotor 22 is fixedly attached to the first rotor disk 21, for example, the first rotor disk 21 is located on the rear side of the first rotor 22, that is, the first rotor 22 is located on the front side of the first rotor disk 21.
As shown in fig. 1, the first rotor disk 21 may be fixedly mounted to the rotating shaft 27 by a coupling member 28, wherein the coupling member 28 may be, for example, a bolt mounted to a rear end of the rotating shaft 27. Thereby, the first rotor 22 can rotate the first rotor disk 21 together with the rotary shaft 27.
Further, as shown in fig. 1, between the rotating shaft 27 and the stator 23 in the radial direction, a bearing 30 may be provided so as to support the rotating shaft 27. Further, the bearing 30 may be provided at an axially intermediate position of the rotary shaft 27. The number of bearings 30 may be 1 or more, for example, 2 or more, and the 2 or more bearings 30 may be arranged in the axial direction.
In the present embodiment, as shown in fig. 1, the motor 2 may further have a second rotor 25. The second rotor 25 may be positioned at a front side of the stator 23. The second rotor 25 may be fixedly mounted to the rear side of the second rotor disc 26. The second rotor disc 26 may be fixedly mounted to the rotating shaft 27 by means of a connecting part 29. The connecting member 29 may be, for example, a bolt attached to the tip of the rotary shaft 27.
In fig. 1, the motor 2 has a first rotor 22 and a second rotor 25, i.e. the motor 2 is a double rotor axial flux motor. However, the present embodiment is not limited to this, and fig. 1 is merely an example, and the motor 2 may not have the second rotor 25, or the motor 2 may have 3 or more rotors provided in the axial direction.
In the present embodiment, as shown in fig. 1, the braking apparatus 1 may have: brake disc 15, brake pad 14, elastic component 11, slider 18, and solenoid valve body 19.
In the present embodiment, the brake disk 15 is disposed on the side of the first rotor disk 21 in the axial direction away from the stator 23, for example, the brake disk 15 is disposed on the rear side of the first rotor disk 21, and the brake disk 15 rotates together with the first rotor disk 21; the brake pads 14 are arranged on the axial side of the brake disc 15 remote from the stator 23, for example, the brake pads 14 are provided on the rear side of the brake disc 15; the elastic member 11 is disposed radially outward of the brake pad 14, and the elastic member 11 may be, for example, a spring; the slider 18 is disposed radially inward of the brake shoe 14 and connected to the brake shoe 14; the electromagnetic valve main body 19 is sleeved on the periphery of the sliding block 18.
In the present embodiment, the brake pad 14 has a convex portion 14a that protrudes toward the brake disk 15 in the axial direction, for example, the convex portion 14a protrudes toward the front side of the brake pad 14.
As shown in fig. 1, when the brake apparatus 1 brakes, the convex portion 14a of the brake pad 14 engages with the brake disk 15, thereby stopping the rotation of the brake disk 15 and the first rotor disk 21.
According to the embodiment, the braking device brakes the rotor disc of the motor through the meshing of the brake disc and the brake block, so that the braking device is simple in structure, large in braking torque and high in braking reliability; in addition, the braking device is arranged on one axial side of the rotor disc of the axial flux motor, so that the volume occupied by the braking device can be saved.
In the present embodiment, the slider 18 may be a magnetic body. The solenoid valve body 19 may be cylindrical and wound with a coil. When the coil of the solenoid valve body 19 is energized, the slider 18 is attracted, and the attraction force of the solenoid valve body 19 on the slider 18 overcomes the elastic force of the elastic member 11, so that the slider 18 can move the brake pad 14 radially inward, and the convex portion 14a of the brake pad 14 engages with the brake disk 15.
Fig. 2 is a schematic view of the brake apparatus of fig. 1 in a release position. As shown in fig. 2, when the coil of the solenoid valve body 19 is deenergized, the slider 18 is not attracted by the attraction force of the solenoid valve body 19, and therefore the brake pad 14 is only urged by the elastic force of the elastic member 11, and the brake pad 14 moves radially outward by the elastic force of the elastic member 11, so that the convex portion 14a of the brake pad 14 is separated from the brake disk 15. During operation of the motor 2, the coil of the solenoid valve body 19 may be de-energized, thereby allowing the motor 2 to operate normally.
Fig. 4 (a) is a perspective view schematically showing the internal structure of the braking apparatus of fig. 1. As shown in fig. 1, 2 and 4 (a), the brake disk 15 and the first rotor disk 21 may be formed separately, and the brake disk 15 is mounted on the rear side surface of the first rotor disk 21 by fixing elements 16, wherein the fixing elements 16 may be screws or the like, for example, the number of the fixing elements 16 may be 6 or 8, for example, and the fixing elements 16 may be arranged at equal intervals in the circumferential direction.
In the present embodiment, the brake disk 15 and the first rotor disk 21 may be formed integrally. Fig. 3 is another sectional view of the braking apparatus of the present embodiment, and fig. 4 (b) is a perspective view schematically showing the internal structure of the braking apparatus of fig. 3.
As shown in fig. 3 and 4 (b), the brake disk 15 and the first rotor disk 21 are integrally formed, and thus, the brake disk 15 is formed in a structure protruding from the rear side surface of the first rotor disk 21.
In the present embodiment, as shown in fig. 2, 4 (a) and 4 (b), the outer periphery of the brake disk 15 may be formed with a recessed portion 15a. When the brake apparatus 1 brakes, the convex portion 14a of the brake pad 14 engages with the concave portion 15a of the outer periphery of the brake disk 15.
In one embodiment, the recessed portion 15a may be recessed radially inward from an outer edge of the brake disk 15. The shape of the recess 15a may be triangular, quadrangular, or other shapes consisting of line segments and/or curves in a plane perpendicular to the central axis C. The shape of the recess 15a may be set according to the braking torque that the braking device 1 is required to apply.
In the present embodiment, the material of the brake disk 15 may be iron, aluminum, or the like, and thus, it is possible to improve the rigidity of the brake apparatus 1, provide a higher braking torque, and improve the reliability of braking.
In the present embodiment, as shown in fig. 1, the brake apparatus 1 may be provided inside a cover 20 of the motor 2 for covering the first rotor 22, and the brake pads 14 and the solenoid valve main body 19 may be mounted to the cover 20 of the motor 2.
Fig. 5 (a) is an assembly diagram of the brake pads 14 and the solenoid valve bodies 19 to the lid body 20 of the motor 2, and fig. 5 (b) is an assembly diagram of the brake pads 14 and the solenoid valve bodies 19 to the lid body 20 of the motor 2. Both (a) and (b) of fig. 5 are schematic views viewed from the front side to the rear side in the axial direction.
As shown in fig. 1 and fig. 5 (a) and (b), the cover plate 12 is attached to the cover body 20 by fasteners 13 such as screws, the brake pad 14 and the elastic member 11 are located in a space formed by the cover plate 12 and the cover body 20, the brake pad 14 is reciprocally movable in the space, and a projection 14a of the brake pad 14 projects from the surface of the cover plate 12 to engage with the brake disk 15. In this space, one end of an elastic member 11 is connected to the brake pad 14, and the other end is in contact with the peripheral wall of the lid 20, and the elastic member 11 is, for example, a linear spring. The solenoid valve body 19 is fixedly attached to the inside of the cover 20 by a fixing member 17 such as a screw, and the slider 18 is positioned inside the solenoid valve body 19 and connected to the brake pad 14.
In the present embodiment, as shown in fig. 5 (a) and (b), the extending direction of the slider 18 coincides with the extending direction of the brake pad 14, and the brake pad 14 is moved in the extending direction of the brake pad 14 by the elastic member 11 and the slider 18.
In the present embodiment, the manner of arranging the slider 18 and the brake pad 14 is not limited to the description of fig. 1 to 5.
Fig. 6 is another perspective view of the internal structure of the brake device of the present embodiment. In fig. 6 (a), the brake disk 15 is attached to the first rotor disk 21 by the fixing member 16, and in fig. 6 (b), the brake disk 15 is integrally formed with the first rotor disk 21.
Fig. 7 (a) is an assembly view of the brake pad 14 and the solenoid valve body 19 of fig. 6 attached to the lid 20 of the motor 2, and fig. 7 (b) is a view of the brake pad 14 and the solenoid valve body 19 of fig. 6 attached to the lid 20 of the motor 2. Both (a) and (b) of fig. 7 are schematic views viewed from the front side to the rear side in the axial direction.
As shown in fig. 6 and 7, one end 141 of the brake pad 14 in the extending direction is pivotably mounted, the other end 142 of the brake pad 14 in the extending direction is connected to the slider 18, the elastic member 11 generates a torque to rotate the brake pad 14 about the one end 141, and the protrusion 14a of the brake pad 14 is located at the other end 142 of the brake pad 14.
In this embodiment, as shown in fig. 6 and 7, the resilient member 11 may be, for example, a spring providing a torque, which may be, for example, pivotally mounted coaxially with one end 141 of the brake shoe 14. For example, the elastic member 11 and the one end 141 of the brake shoe 14 may be fitted around the outer periphery of the fixing member 13 such as a bolt for pivotal mounting.
Fig. 8 is another schematic view of the brake device of the present embodiment mounted to a motor with the brake device in a braking position, and fig. 9 is a schematic view of the brake device of fig. 8 in a releasing position. In fig. 8 and 9, the brake pads and the slider 18 of the brake apparatus 1 are arranged as shown in fig. 6 and 7.
In the present embodiment, as shown in fig. 8, when the coil of the solenoid valve body 19 is energized, the slider 18 is attracted, and the attraction force of the solenoid valve body 19 received by the slider 18 overcomes the elastic force of the elastic member 11, so that the slider 18 can rotate the other end 142 of the brake pad 14 radially inward, and the convex portion 14a of the brake pad 14 engages with the brake disk 15.
As shown in fig. 9, when the coil of the solenoid valve body 19 is deenergized, the slider 18 is not attracted by the solenoid valve body 19, so that the other end 142 of the brake pad 14 is rotated radially outward by the elastic force of the elastic member 11, and the convex portion 14a of the brake pad 14 is separated from the brake disk 15. During operation of the motor 2, the coil of the solenoid valve body 19 may be de-energized, thereby allowing the motor 2 to operate normally.
According to the embodiment, the braking device brakes the rotor disc of the motor through the meshing of the brake disc and the brake block, so that the braking device is simple in structure, large in braking torque and high in braking reliability; in addition, the braking device is arranged on one axial side of the rotor disc of the axial flux motor, so that the volume occupied by the braking device can be saved.
Example 2
The present embodiment 2 provides a power module having the brake device described in embodiment 1. Since the structure of the braking device has been described in detail in embodiment 1, the contents thereof are incorporated herein, and the description thereof is omitted here.
In the present embodiment, the cross-sectional view of the power assembly 100 may be as shown in fig. 1, fig. 2, fig. 3, fig. 8, or fig. 9. The power assembly 100 may have a brake device 1 and a motor 2, wherein the brake device 1 is used to brake the motor 2.
In the present embodiment, the power assembly 100 may further have a speed reduction device 3, and the speed reduction device 3 may be disposed on a side of the stator 23 that is away from the first rotor 22 in the axial direction. The reduction gear 3 is connected to an output end of the rotating shaft 27 of the motor 2, the reduction gear 3 transmits power of the rotating shaft 27 of the motor 2 through a transmission member such as a gear in the reduction gear 3 and outputs the power from an output shaft, and the rotation speed of the output shaft of the reduction gear 3 may be smaller than the rotation speed of the rotating shaft 27 of the motor 2.
In this embodiment, the reduction gear unit 3 may further have a reduction gear frame 40, and the reduction gear frame 40 may be configured to accommodate a gear and other transmission components in the reduction gear unit 3.
In this embodiment, the power assembly 100 may further have a sealing plate 32, and the sealing plate 32 is located between the reduction gear 3 and the motor 2, so as to prevent the gear lubricant in the reduction gear 3 from affecting the rotation of the motor 2.
Further, the motor 2 may have a housing 24, and the housing 24 may be connected to the lid body 20 by a fixing member 31 such as a bolt.
According to the embodiment, in the power assembly, the braking device brakes the rotor disc of the motor through the engagement of the brake disc and the brake block, so that the braking device has a simple structure, large braking torque and high braking reliability; in addition, the braking device is arranged on one axial side of the rotor disc of the axial flux motor, so that the volume occupied by the braking device can be saved.
The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various changes and modifications to this application, which will occur to those skilled in the art and which fall within the spirit and scope of this application, may be made by those skilled in the art based upon the teachings and principles herein.
Claims (11)
1. A braking device (1) mounted to a motor (2) for braking said motor (2),
the motor (2) has:
a rotating shaft (27) that rotates around the center axis;
a first rotor (22) disposed radially outward of the rotating shaft (27);
a stator (23) disposed on one axial side of the first rotor (22); and
a first rotor disk (21) arranged on the other axial side of the first rotor (22) from the stator (23),
characterized in that the braking device (1) comprises:
a brake disk (15) arranged on an axial side of the first rotor disk (21) remote from the stator (23);
a brake pad (14) disposed on one side of the brake disk (15) in the axial direction away from the stator (23);
an elastic member (11) disposed radially outward of the brake pad (14);
a slider (18) that is arranged on the radially inner side of the brake pad (14) and is connected to the brake pad (14); and
a main body (19) of the electromagnetic valve sleeved on the periphery of the sliding block (18),
the brake pad (14) has a projection (14 a) projecting in the axial direction toward the brake disc (15),
when the brake device (1) brakes, the convex portion (14 a) of the brake pad (14) engages with the brake disc (15),
wherein,
the extension direction of the slide block (18) is consistent with the extension direction of the brake block (14), and the brake block (14) moves along the extension direction of the brake block (14); or,
one end of the brake block (14) in the extending direction is pivotally mounted, the other end of the brake block (14) in the extending direction is connected with the slider (18), and the elastic member (11) generates torque for rotating the brake block (14) around the one end.
2. The brake apparatus of claim 1,
the outer periphery of the brake disk (15) is formed with a recessed portion,
when the brake device (1) brakes, the convex portion (14 a) of the brake pad (14) engages with the concave portion on the outer periphery of the brake disk (15).
3. The brake apparatus of claim 2,
the recessed portion is recessed radially inward from an outer edge of the brake disk (15).
4. The brake apparatus of claim 2,
the shape of the recess on a plane perpendicular to the central axis is triangular, quadrilateral, or other shape composed of line segments and/or curves.
5. The brake apparatus of claim 1,
the brake disc (15) and the first rotor disc (21) are formed in a split mode and are fixed through fixing elements; or,
the brake disc (15) and the first rotor disc (21) are integrally formed.
6. The braking device according to claim 1,
the material of the brake disc (15) comprises iron or aluminium.
7. The brake apparatus of claim 1,
the elastic member (11) includes a spring.
8. A power assembly comprising a brake device according to any one of claims 1 to 7, and a motor, wherein the brake device is mounted to the motor.
9. The power assembly of claim 8,
the motor also has a second rotor (25),
the stator (23) is located between the first rotor (22) and the second rotor (25) in an axial direction.
10. The power assembly of claim 8,
the motor has a cover (20) covering the first rotor (22),
the brake block (14) and the solenoid valve body (19) are attached to a cover (20) of the motor.
11. A power assembly according to claim 8, wherein the power assembly further comprises:
a reduction gear disposed on a side of the stator axially remote from the first rotor (22),
wherein the speed reduction device is connected with an output end of the rotating shaft of the motor, and a rotating speed output by the speed reduction device is less than a rotating speed of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149872.7A CN111628609B (en) | 2019-02-28 | 2019-02-28 | Brake device and power assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149872.7A CN111628609B (en) | 2019-02-28 | 2019-02-28 | Brake device and power assembly |
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| CN111628609A CN111628609A (en) | 2020-09-04 |
| CN111628609B true CN111628609B (en) | 2022-10-04 |
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| CN111628609A (en) | 2020-09-04 |
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