Brake and motor

Abstract

The utility model discloses a brake and a motor. The brake and the motor comprise a top plate connected with a motor end cover; the air cylinder is provided with a fixed end and an action end, and the fixed end is connected with the top plate; the pressing plate is connected with the action end; the friction wheel is arranged between the pressing plate and the action end; and the synchronizing wheel is connected with the friction wheel and a motor output shaft. The brake and the motor do not need to adjust air gaps, the field maintenance amount is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] This application belongs to the field of motor technology, specifically relating to a brake and a motor. Background Technology

[0002] Motor braking is one of the two operating processes that are opposite to motor starting. The starting process is the process of the motor moving from a standstill to its rated speed, while motor braking is the process of the motor moving from a dynamic state to a standstill.

[0003] To achieve motor braking, an electromagnetic brake is typically installed at the tail of the motor. However, in existing technology, the brake pads of the electromagnetic brake gradually wear down during use. As the wear increases, the air gap needs to be adjusted, increasing the amount of on-site maintenance. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a brake and a motor, which aims to at least partially solve the technical problem that electromagnetic brakes require adjustments to the air gap as the brake pads wear down, thus increasing on-site maintenance.

[0005] The technical solution of this utility model is as follows:

[0006] A brake includes: a top plate connected to a motor end cover; a cylinder having a fixed end and an actuating end, the fixed end being connected to the top plate; a pressure plate connected to the actuating end; a friction wheel disposed between the pressure plate and the actuating end; and a synchronizing wheel connected to the friction wheel and the motor output shaft.

[0007] In some embodiments, the cylinder has a rod chamber and a rodless chamber, and the brake further includes: an electromagnetic reversing valve having an air inlet, a first port, a second port, a third port, and a fourth port, wherein the air inlet is connected to the air source; wherein, when the third port is connected to the rod chamber, the fourth port is connected to the rodless chamber; when the third port is connected to the rodless chamber, the fourth port is connected to the rod chamber; when the air inlet is connected to the third port, the second port is connected to the fourth port; and when the air inlet is connected to the fourth port, the first port is connected to the third port.

[0008] In some implementations, a pressure regulating valve is provided between the air inlet and the air source.

[0009] In some embodiments, the cylinder includes a first cylinder and a second cylinder, and the brake further includes: a first three-way valve having a fifth port, a sixth port, and a seventh port; and a second three-way valve having an eighth port, a ninth port, and a tenth port; wherein the fifth port is connected to the third port, the eighth port is connected to the fourth port, the tenth port is connected to the rodless port of the first cylinder when the seventh port is connected to the rodless port of the first cylinder, the tenth port is connected to the rodless port of the first cylinder when the seventh port is connected to the rodless port of the first cylinder, the ninth port is connected to the rodless port of the second cylinder when the sixth port is connected to the rodless port of the second cylinder, and the ninth port is connected to the rodless port of the second cylinder when the sixth port is connected to the rodless port of the second cylinder.

[0010] In some embodiments, the brake further includes a base plate connected to the motor end cover and located between the friction wheel and the motor end cover.

[0011] In some embodiments, the brake further includes: a limiting sleeve, one end of which abuts against the top plate and the other end which passes through the pressing plate and abuts against the bottom plate; and a locking member, which passes through the top plate, the limiting sleeve and the bottom plate in sequence and connects to the motor end cover.

[0012] In some implementations, the friction wheel, the pressure plate, the synchronizing wheel, and the motor output shaft are coaxially arranged.

[0013] In some embodiments, the friction wheel has a first through hole, and the synchronous wheel is disposed in the first through hole; wherein, one of the peripheral surfaces of the first through hole and the synchronous wheel has a spline, and the other has a spline groove, and the spline is embedded in the spline groove;

[0014] In some embodiments, the synchronizing pulley has a second through hole, and the motor output shaft is disposed in the second through hole; wherein, one of the peripheral surfaces of the second through hole and the peripheral surface of the motor output shaft has a protrusion, and the other has a groove, with the protrusion embedded in the groove.

[0015] Based on the same inventive concept, this utility model also provides an electric motor, including an electric motor end cover, an electric motor output shaft, and the aforementioned brake.

[0016] The beneficial effects of this utility model include at least the following:

[0017] Because the top plate is connected to the motor end cover, the top plate is supported by the motor end cover. Since the cylinder has a fixed end and an actuating end, with the fixed end connected to the top plate, the fixed end is supported by the top plate. Because the pressure plate is connected to the actuating end, and the friction wheel is located between the pressure plate and the actuating end, and the synchronous pulley is connected to the friction wheel and the motor output shaft, when the motor needs to be braked, the cylinder is activated. The actuating end of the cylinder drives the pressure plate towards the friction wheel until the pressure plate presses the friction wheel firmly. Under the pressure of the pressure plate and the friction between the friction wheel and the pressure plate, the friction wheel stops rotating. At this time, the friction wheel, through the synchronous pulley, stops the motor output shaft, thus achieving motor braking. During the braking process, the friction wheel and / or the pressure plate will wear. As the wear of the friction wheel and / or the pressure plate increases, the actuating end of the cylinder can still drive the pressure plate towards the friction wheel until the pressure plate presses the friction wheel firmly. This eliminates the need to adjust the air gap, reducing on-site maintenance and labor intensity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 These are schematic diagrams of the brakes in some embodiments;

[0020] Figure 2 for Figure 1 Half-section view of the central brake;

[0021] Figure 3 for Figure 1 Cross-sectional view of the brake;

[0022] Figure 4 for Figure 1 A schematic diagram of the installation of the friction wheel of the intermediate brake;

[0023] Figure 5 for Figure 1 A schematic diagram of the connection of the electromagnetic reversing valve of the brake.

[0024] In the attached image:

[0025] Top plate 10, third through hole 11;

[0026] Cylinder 20, first cylinder 21, second cylinder 22;

[0027] Pressure plate 30, fourth through hole 31;

[0028] Friction wheel 40, first through hole 41, spline groove 42;

[0029] Synchronous pulley 50, spline 51, second through hole 52, groove 53;

[0030] Motor end cover 60;

[0031] Motor output shaft 70, protrusion 71;

[0032] Electromagnetic reversing valve 80, air inlet 81, first port 82, second port 83, third port 84, fourth port 85;

[0033] First three-way valve 90, fifth port 91, sixth port 92, seventh port 93;

[0034] Second three-way valve 100, eighth port 101, ninth port 102, tenth port 103;

[0035] Base plate 110;

[0036] Limiting sleeve 120;

[0037] Locking component 130. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0042] This application is described below with reference to the accompanying drawings and specific embodiments:

[0043] The brake and motor provided in this embodiment aim to at least partially solve the technical problem that electromagnetic brakes require adjustments to the air gap as the brake pads wear down, thus increasing the amount of on-site maintenance.

[0044] Figure 1 These are schematic diagrams of the brakes in some embodiments; Figure 2 for Figure 1 Half-section view of the central brake; Figure 3 for Figure 1 Cross-sectional view of the brake. (Combined with...) Figure 1 , Figure 2 and Figure 3 The brake in this embodiment includes: a top plate 10, a cylinder 20, a pressure plate 30, a friction wheel 40, and a synchronizing wheel 50. The top plate 10 is connected to the motor end cover 60. The cylinder 20 has a fixed end and an actuating end, and the fixed end is connected to the top plate 10. The pressure plate 30 is connected to the actuating end. The friction wheel 40 is disposed between the pressure plate 30 and the actuating end. The synchronizing wheel 50 is connected to the friction wheel 40 and the motor output shaft 70.

[0045] The fixed end of the cylinder 20 can be the cylinder body of the cylinder 20, and the actuating end of the cylinder 20 can be the cylinder rod of the cylinder 20.

[0046] Since the top plate 10 is connected to the motor end cover 60, the top plate 10 is supported by the motor end cover 60. Since the cylinder 20 has a fixed end and an actuating end, and the fixed end is connected to the top plate, the fixed end is supported by the top plate 10. Since the pressure plate 30 is connected to the actuating end, and the friction wheel 40 is located between the pressure plate 30 and the actuating end, and the synchronous pulley 50 is connected to the friction wheel 40 and the motor output shaft 70, when the motor needs to be braked, the cylinder 20 is activated. The actuating end of the cylinder 20 drives the pressure plate 30 to move towards the friction wheel 40 until the pressure plate 30 presses the friction wheel 40 tightly. Under the action of friction between friction wheel 40 and pressure plate 30, friction wheel 40 stops rotating. At this time, friction wheel 40 stops rotating motor output shaft 70 through synchronous wheel 50 to achieve motor braking. During the braking process, friction wheel 40 and / or pressure plate 30 will wear. As the wear of friction wheel 40 and / or pressure plate 30 increases, the actuating end of cylinder 20 can still drive pressure plate 30 to move in the direction of friction wheel 40 until pressure plate 30 presses friction wheel 40 tightly. There is no need to adjust the air gap, which reduces the amount of on-site maintenance and labor intensity.

[0047] In some embodiments, the number of cylinders 20 can be one or more.

[0048] Furthermore, when there are multiple cylinders 20, the clamping force applied by the clamping plate 30 to the friction wheel 40 can be increased, ensuring the braking effect of the motor.

[0049] Specifically, the multiple cylinders 20 are evenly spaced at equal angles to ensure that the clamping force applied by the clamping plate 30 to the friction wheel 40 is uniform, which further ensures the braking effect of the motor.

[0050] In related technologies, brakes are divided into two categories: energized brakes and de-energized brakes. Typically, one type is selected for field use. However, when the braking method of certain motors needs to be changed, a different type of brake must be installed, thus increasing the cost of spare parts in the field.

[0051] Figure 5 for Figure 1 A schematic diagram of the connection of the solenoid directional valve of the central brake. (Combined with...) Figure 5In some embodiments, to reduce the cost of on-site spare parts, the cylinder 20 has a rod chamber and a rodless chamber, and the brake further includes an electromagnetic directional valve 80. The electromagnetic directional valve 80 has an inlet 81, a first port 82, a second port 83, a third port 84, and a fourth port 85, with the inlet 81 connected to an air source. Specifically, when the third port 84 is connected to the rod chamber, the fourth port 85 is connected to the rodless chamber; when the third port 84 is connected to the rodless chamber, the fourth port 85 is connected to the rod chamber; when the inlet 81 is connected to the third port 84, the second port 83 is connected to the fourth port 85; and when the inlet 81 is connected to the fourth port 85, the first port 82 is connected to the third port 84.

[0052] In some embodiments, when the brake is used as an energized brake, the operation of the solenoid directional valve 80 is as follows:

[0053] The third port 84 is connected to the rod-type cavity, and the fourth port 85 is connected to the rodless cavity.

[0054] When the coil of the electromagnetic reversing valve 80 is not energized, the air inlet 81 is connected to the third port 84, the air inlet 81 is disconnected from the fourth port 85, and the fourth port 85 is connected to the second port 83. Gas enters the rod chamber sequentially through the air source, the air inlet 81, and the third port 84. At the same time, the gas in the rodless chamber enters the fourth port 85 and is discharged through the second port 83. This ensures that the actuating end of the cylinder 20 is continuously in the retracted state, that is, the pressure plate 30 is separated from the friction wheel 40. In other words, the pressure plate 30 no longer presses the friction wheel 40, and the friction wheel 40 can rotate with the rotation of the motor output shaft 70 via the synchronous wheel 50, causing the brake to lose its braking effect.

[0055] When the coil of the electromagnetic reversing valve 80 is energized, the air inlet 81 is connected to the fourth port 85, the air inlet 81 is disconnected from the third port 84, and the third port 84 is connected to the first port 82. Gas enters the rodless chamber sequentially from the gas source, the air inlet 81, and the fourth port 85. At the same time, the gas in the rod chamber enters the third port 84 and is discharged from the first port 82. This ensures that the cylinder's actuating end is continuously extended, which means that the pressure plate 30 and the friction wheel 40 are tightly fitted together. Under the action of the pressure force of the pressure plate 30 and the friction force between the friction wheel 40 and the pressure plate 30, the friction wheel 40 stops rotating. At this time, the friction wheel 40 stops the motor output shaft 70 by means of the synchronous wheel 50, so that the brake has a braking effect.

[0056] In some embodiments, when the brake is used as a power-off brake, the operation of the solenoid directional valve 80 is as follows:

[0057] The third port 84 is connected to the rodless cavity, and the fourth port 85 is connected to the rod cavity.

[0058] When the coil of the electromagnetic reversing valve 80 is energized, the air inlet 81 is connected to the fourth port 85, the air inlet 81 is disconnected from the third port 84, and the third port 84 is connected to the first port 82. Gas enters the rod chamber sequentially from the air source, the air inlet 81, and the fourth port 85. At the same time, the gas in the rodless chamber enters the third port 84 and is discharged from the first port 82. This ensures that the actuating end of the cylinder is continuously in the retracted state, which means that the pressure plate 30 is separated from the friction wheel 40. In other words, the pressure plate 30 no longer presses the friction wheel 40, and the friction wheel 40 can rotate with the rotation of the motor output shaft 70 via the synchronous wheel 50, causing the brake to lose its braking effect.

[0059] When the coil of the electromagnetic reversing valve 80 is not energized, the air inlet 81 is connected to the third port 84, the air inlet 81 is disconnected from the fourth port 85, and the fourth port 85 is connected to the second port 83. Gas enters the rodless chamber sequentially from the air source, the air inlet 81, and the third port 84. At the same time, the gas in the rod chamber enters the fourth port 85 and is discharged from the second port 83. This ensures that the actuating end of the cylinder is continuously extended, that is, that the pressure plate 30 and the friction wheel 40 are tightly fitted. Under the action of the pressure force of the pressure plate 30 and the friction force between the friction wheel 40 and the pressure plate 30, the friction wheel 40 stops rotating. At this time, the friction wheel 40 stops the motor output shaft 70 by means of the synchronous wheel 50, so that the brake has a braking effect.

[0060] Specifically, by selecting one of the third port 84 and the fourth port 85 to connect to the rod-side chamber and the other to connect to the rodless chamber, the brake can be switched between energized braking and de-energized braking without the need to install another type of brake, thus reducing the cost of spare parts on site.

[0061] In some embodiments, in order to achieve different braking forces of the brake, a pressure regulating valve is provided between the air inlet 81 and the air source. The pressure of the gas entering the air inlet 81 is adjusted by the pressure regulating valve to adjust the downward pressure of the actuating end of the cylinder 20, thereby adjusting the clamping force applied by the clamping plate 30 to the friction wheel 40.

[0062] In some embodiments, to enable a single electromagnetic directional valve 80 to control the operation of two cylinders 20, the cylinders 20 include a first cylinder 21 and a second cylinder 22. The brake further includes a first three-way valve 90 and a second three-way valve 100. The first three-way valve 90 has a fifth port 91, a sixth port 92, and a seventh port 93. The second three-way valve 100 has an eighth port 101, a ninth port 102, and a tenth port 103. In this configuration, the fifth port 91 is connected to the third port 84, the eighth port 101 is connected to the fourth port 85, the seventh port 93 is connected to the rod chamber of the first cylinder 21, the tenth port 103 is connected to the rodless chamber of the first cylinder 21, the seventh port 93 is connected to the rodless chamber of the first cylinder 21, the tenth port 103 is connected to the rod chamber of the first cylinder 21, the sixth port 92 is connected to the rod chamber of the second cylinder 22, the ninth port 102 is connected to the rodless chamber of the second cylinder 22, and the sixth port 92 is connected to the rodless chamber of the second cylinder 22, the ninth port 102 is connected to the rod chamber of the second cylinder 22. This allows gas from one gas source to be supplied to the first cylinder 21 and the second cylinder 22 respectively through an electromagnetic reversing valve 80, a first three-way valve 90, and a second three-way valve 100, thus reducing costs.

[0063] Specifically, since port 91 (fifth port) is connected to port 84 (third port), ports 92 (sixth port) and 93 (seventh port) function the same as port 84. In other words, when the brake switches between energized braking and de-energized braking, the switching method of ports 92 and 93 is the same as that of port 84. Similarly, since port 101 (eighth port) is connected to port 85 (fourth port), ports 102 (ninth port) and 103 (tenth port) function the same as port 85. This means that when the brake switches between energized braking and de-energized braking, the switching method of ports 102 and 103 is the same as that of port 84. That is: when the sixth port 92 is connected to the rod chamber of the second cylinder 22 and the seventh port 93 is connected to the rod chamber of the first cylinder 21, the ninth port 102 is connected to the rodless chamber of the second cylinder 22 and the tenth port 103 is connected to the rodless chamber of the first cylinder 21; when the sixth port 92 is connected to the rodless chamber of the second cylinder 22 and the seventh port 93 is connected to the rodless chamber of the first cylinder 21, the ninth port 102 is connected to the rod chamber of the second cylinder 22 and the tenth port 103 is connected to the rod chamber of the first cylinder 21.

[0064] Combination Figure 1 , Figure 2 and Figure 3In some embodiments, to ensure the safety of the motor end cover 60, the brake further includes a base plate 110. The base plate 110 is connected to the motor end cover 60 and located between the friction wheel 40 and the motor end cover 60. That is, when the cylinder 20's actuating end drives the pressing plate 30 to press the friction wheel 40, the friction wheel 40 is pressed against the base plate 110 to prevent the friction wheel 40 from contacting the motor end cover 60, thus preventing wear on the motor end cover 60 and ensuring the safety of both the motor end cover 60 and the motor. The motor output shaft 70 passes through the base plate 110 and is connected to the synchronous pulley 50.

[0065] Combination Figure 3 In some embodiments, to prevent the clamping plate 30 from rotating, the brake further includes a limiting sleeve 120 and a locking member 130. One end of the limiting sleeve 120 abuts against the top plate 10, and the other end passes through the clamping plate 30 and abuts against the bottom plate 110. The locking member 130 passes through the top plate 10, the limiting sleeve 120, and the bottom plate 110 in sequence and is connected to the motor end cover 60. The locking member 130 can be a bolt.

[0066] Locking elements 130 are sequentially inserted through the top plate 10, the limiting sleeve 120, and the bottom plate 110 to connect with the motor end cover 60, thereby locking the top plate 10 and the bottom plate 110 onto the motor end cover 60 and ensuring the stability of the installation of the top plate 10 and the bottom plate 110. Since one end of the limiting sleeve 120 abuts against the top plate 10 and the other end passes through the pressure plate 30 and abuts against the bottom plate 110, the limiting sleeve 120 can support the top plate 10 and prevent the pressure plate 30 from rotating, thus ensuring the stability of the pressure plate 30 pressing against the friction wheel 40. Moreover, the limiting sleeve 120 allows the pressure plate 30 to move smoothly in the axial direction of the motor output shaft 70, preventing the locking elements 130 from interfering with the movement of the pressure plate 30, thus ensuring that the pressure plate 30 can smoothly abut against or separate from the friction wheel 40.

[0067] Combination Figure 1 , Figure 2 and Figure 3 In some embodiments, in order to ensure that the clamping plate 30 can be pressed against the friction wheel 40, the friction wheel 40, the clamping plate 30, the synchronous wheel 50 and the motor output shaft 70 are coaxially arranged so that when the friction wheel 40 is pressed by the clamping plate 30, the rotation of the synchronous wheel 50 can be stopped in time. At the same time, it also facilitates the arrangement of the friction wheel 40, the clamping plate 30, the synchronous wheel 50 and the motor output shaft 70.

[0068] Figure 4 for Figure 1 A schematic diagram of the installation of the friction wheel in the intermediate brake. (Combined with...) Figure 4In some embodiments, to enable the friction wheel 40 to move axially along the motor output shaft 70 without rotating, the friction wheel 40 is provided with a first through hole 41, and the synchronous wheel 50 is disposed within the first through hole 41. The circumferential surface of the first through hole 41 and the circumferential surface of the synchronous wheel 50 are provided with a spline 51 on one side and a spline groove 42 on the other. The spline 51 is embedded in the spline groove 42. Through the cooperation of the spline 51 and the spline groove 42, the friction wheel 40 can move axially along the motor output shaft 70 without rotating. When the clamping plate 30 moves towards the friction wheel 40, it can press the friction wheel 40 against the motor end cover 60 or the base plate 110. Both opposite sides of the friction wheel 40 are in contact, allowing the friction wheel 40 to stop rotating in time, ensuring the braking force of the brake. Moreover, even when the friction wheel 40 wears, the clamping plate 30 can still press the friction wheel 40 against the motor end cover 60 or the base plate 110, ensuring the braking force of the brake.

[0069] In some embodiments, when the friction wheel 40 reaches the end of its service life, the top plate 10 and the pressure plate 30 are removed from the motor end cover 60, and the friction wheel 40 is removed from the synchronous pulley 50 along the axial direction of the motor output shaft 70. Then, a new friction wheel 40 is installed on the synchronous pulley 50 along the axial direction of the motor output shaft 70, which facilitates the disassembly and assembly of the friction wheel 40 and improves efficiency.

[0070] In some embodiments, the peripheral surface of the first through hole 41 may be provided with a spline 51, and the peripheral surface of the synchronous pulley 50 may be provided with a spline groove 42. Of course, in some other embodiments, the peripheral surface of the synchronous pulley 50 may be provided with a spline 51, and the peripheral surface of the first through hole 41 may be provided with a spline groove 42.

[0071] Combination Figure 4 In some embodiments, to connect the synchronous pulley 50 to the motor output shaft 70, the synchronous pulley 50 has a second through hole 52, and the motor output shaft 70 is disposed within the second through hole 52. One of the circumferential surfaces of the second through hole 52 and the motor output shaft 70 has a protrusion 71, and the other has a groove 53. The protrusion 71 is embedded in the groove 53. When the protrusion 71 is embedded in the groove 53, the connection between the synchronous pulley 50 and the motor output shaft 70 is achieved. Moreover, because the protrusion 71 is embedded in the groove 53, the synchronous pulley 50 is prevented from rotating. When the pressure plate 30 presses against the friction wheel 40, the synchronous pulley 50 can drive the motor output shaft 70 to stop rotating, thereby achieving braking.

[0072] In some embodiments, when the synchronous pulley 50 reaches the end of its service life, the top plate 10 and the clamping plate 30 are removed from the motor end cover 60, and the synchronous pulley 50 is removed from the motor output shaft 70 along the axial direction of the motor output shaft 70. Then, a new synchronous pulley 50 is installed on the motor output shaft 70 along the axial direction of the motor output shaft 70, which facilitates the disassembly and assembly of the synchronous pulley 50 and improves efficiency.

[0073] Combination Figure 3 In some embodiments, the top cover 10 has a third through hole 11, and the clamping plate 30 has a fourth through hole 31. The first through hole 41, the second through hole 52, the third through hole 11, the fourth through hole 31 and the motor output shaft 70 are coaxially arranged to facilitate the power transmission of the motor output shaft 70, while avoiding interference of the top cover 10 and / or the clamping plate 30 with the operation of the motor output shaft 70.

[0074] Based on the same inventive concept, this application also proposes an electric motor that uses the aforementioned brake. The specific structure of the brake is as described in the above embodiments. Since all the technical solutions of the above embodiments are used, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0075] In some embodiments, the motor includes a motor end cover 60 and a motor output shaft 70. The motor end cover 60 is connected to the top plate 10, and the motor output shaft 70 is connected to the synchronous pulley 50.

[0076] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0077] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0078] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0080] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0081] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A brake, characterized in that, include: Top plate, connected to the motor end cover; A cylinder having a fixed end and an actuating end, wherein the fixed end is connected to the top plate; The clamping plate is connected to the actuating end; A friction wheel is disposed between the clamping plate and the actuating end; The synchronizing pulley is connected to the friction wheel and the motor output shaft.

2. The brake according to claim 1, characterized in that, The cylinder has a rod chamber and a rodless chamber, and the brake further includes: The electromagnetic reversing valve has an air inlet, a first port, a second port, a third port, and a fourth port, wherein the air inlet is connected to an air source; Specifically, when the third port is connected to the rod cavity, the fourth port is connected to the rodless cavity; when the third port is connected to the rodless cavity, the fourth port is connected to the rod cavity; when the air inlet is connected to the third port, the second port is connected to the fourth port; and when the air inlet is connected to the fourth port, the first port is connected to the third port.

3. The brake according to claim 2, characterized in that, A pressure regulating valve is provided between the air inlet and the air source.

4. The brake according to claim 2, characterized in that, The cylinder includes a first cylinder and a second cylinder, and the brake further includes: The first three-way valve has a fifth port, a sixth port, and a seventh port; The second three-way valve has an eighth port, a ninth port, and a tenth port; Specifically, the fifth port is connected to the third port, the eighth port is connected to the fourth port, when the seventh port is connected to the rod chamber of the first cylinder, the tenth port is connected to the rodless chamber of the first cylinder, when the seventh port is connected to the rodless chamber of the first cylinder, the tenth port is connected to the rod chamber of the first cylinder, when the sixth port is connected to the rod chamber of the second cylinder, the ninth port is connected to the rodless chamber of the second cylinder, and when the sixth port is connected to the rodless chamber of the second cylinder, the ninth port is connected to the rod chamber of the second cylinder.

5. The brake according to any one of claims 1-4, characterized in that, The brake also includes: The base plate is connected to the motor end cover and is located between the friction wheel and the motor end cover.

6. The brake according to claim 5, characterized in that, The brake also includes: The limiting sleeve has one end abutting against the top plate and the other end passing through the clamping plate and abutting against the bottom plate; The locking element is sequentially inserted through the top plate, the limiting sleeve, and the bottom plate and connected to the motor end cover.

7. The brake according to any one of claims 1-4, characterized in that, The friction wheel, the pressure plate, the synchronous wheel, and the motor output shaft are coaxially arranged.

8. The brake according to any one of claims 1-4, characterized in that, The friction wheel has a first through hole, and the synchronous wheel is disposed in the first through hole; The first through hole has a spline on one of its circumferential surfaces and the synchronous pulley, while the other has a spline groove, with the spline embedded in the spline groove.

9. The brake according to any one of claims 1-4, characterized in that, The synchronous pulley has a second through hole, and the motor output shaft is located inside the second through hole; In this case, one of the peripheral surfaces of the second through hole and the peripheral surface of the motor output shaft has a protrusion, and the other has a groove, with the protrusion embedded in the groove.

10. An electric motor, characterized in that, It includes a motor end cover, a motor output shaft, and a brake as described in any one of claims 1-9.

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