Pneumatic control motor brake and motor

Abstract

This disclosure relates to the field of brake technology, and more particularly to a pneumatically controlled motor brake and motor. This disclosure provides a pneumatically controlled motor brake, including a base plate and a braking unit. The braking unit includes a braking assembly and an electromagnetic reversing assembly. The braking assembly includes a first braking element, a second braking element, and an elastic element disposed opposite to each other on both sides of the motor output shaft. The elastic element applies a force to the first and second braking elements against the motor output shaft. The electromagnetic reversing assembly includes an electromagnetic reversing valve and a brake drive element. The brake drive element is connected to the first and second braking elements and is used to drive the first and second braking elements to separate from the motor output shaft. The electromagnetic reversing valve is connected to the brake drive element and has an energized braking state and an de-energized braking state. By implementing the technical solution of this disclosure, when certain motor braking methods need to be changed on-site, the braking method conversion can be completed without installing another type of brake.

Description

Technical Field

[0001] This disclosure relates to the field of brake technology, and in particular to a pneumatically controlled motor brake and motor. Background Technology

[0002] Motor braking typically involves installing an electromagnetic brake on the motor's tail end cover. These brakes are generally classified into two types: energized brakes and de-energized brakes. Usually, one type is selected for field use. However, if the braking method of certain motors needs to be changed in the field, the other type of brake must be installed, thus increasing the cost of spare parts in the field. Especially when using de-energized brakes, the air gap needs to be adjusted as the brake pads wear, increasing the amount of field maintenance required. Utility Model Content

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, in the first aspect of this disclosure, a pneumatically controlled motor brake is provided, including a base plate and a braking part. The base plate is provided with a through hole for a motor output shaft, and the braking part is arranged circumferentially along the through hole for the motor output shaft. The braking part includes a braking assembly and an electromagnetic reversing assembly. The braking assembly includes a first braking member, a second braking member, and an elastic member disposed opposite to each other on both sides of the motor output shaft. The elastic member is used to apply a force to the first braking member and the second braking member against the motor output shaft.

[0005] The electromagnetic commutation assembly includes an electromagnetic commutation valve and a braking drive component. The braking drive component is connected to the first braking component and the second braking component, and is used to drive the first braking component and the second braking component to separate from the motor output shaft.

[0006] The electromagnetic reversing valve is connected to the braking drive, and the electromagnetic reversing valve has an energized braking state and an de-energized braking state. In the de-energized braking state, when the coil of the electromagnetic reversing valve is not energized, the first braking element and the second braking element are in contact with the motor output shaft for braking. In the energized braking state, when the coil of the electromagnetic reversing valve is not energized, the braking drive drives the first braking element and the second braking element to separate from the motor output shaft.

[0007] In one feasible embodiment, the first braking element includes a slide rail, a brake block, a baffle, and a brake pad. The brake block is slidably connected to the motor output shaft via the slide rail. The brake block has a braking surface facing the motor output shaft. The brake pad is disposed on the braking surface. The elastic element abuts between the baffle and the brake block.

[0008] In one feasible implementation, the number of slides is set to two, the two ends of the brake block are respectively slidably connected to the two slides, the two slides are connected to the baffle, and the cross sections of the two slides and the baffle form a U-shape.

[0009] In one possible implementation, the braking surface is configured as an arc shape.

[0010] In one feasible embodiment, the braking drive component includes a cylinder, an air pipe, and a drive wheel assembly, wherein the cylinder is connected to the solenoid directional valve via the air pipe, wherein...

[0011] The drive wheel assembly includes a wheel frame and guide wheels. The wheel frame is connected to the cylinder rod of the cylinder. The guide wheels are disposed on opposite sides of the wheel frame. The first brake and the second brake are slidably connected to the guide wheels. An inclined surface is provided at the connection between the first brake and the second brake and the guide wheels. The inclined surface gradually transitions from the side away from the motor output shaft to the side closer to the motor output shaft.

[0012] In one feasible implementation, a plurality of multi-way valves are also provided, the number of cylinders is set to a plurality, the plurality of cylinders are correspondingly provided with a plurality of drive wheel sets, at least two sets of the plurality of drive wheel sets are provided on opposite sides of the motor output shaft, the multi-way valves are connected to the cylinders and the solenoid directional valves, and the multi-way valves are used to connect the plurality of cylinders in parallel to the solenoid directional valves.

[0013] In one feasible implementation, the number of multi-way valves is set to two, and the multi-way valves are configured as three-way valves, and the number of cylinders is set to two.

[0014] In one feasible implementation, the motor output shaft through hole is located at the center of the base plate.

[0015] In one feasible implementation, the elastic element is configured as a spring or an elastic pad.

[0016] A second aspect of this disclosure provides an electric motor including the pneumatically controlled motor brake described above.

[0017] The above description is merely an overview of the technical solution provided in this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other features and effects of this disclosure more obvious and understandable, the following are specific examples of the implementation methods of this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 This is a top view of the structure disclosed herein;

[0022] Figure 2 This is a three-dimensional structural diagram of the first and second braking components of this disclosure.

[0023] Figure 3 This is a top view of the first and second braking components of this disclosure.

[0024] Figure 4 This is a schematic diagram of the electromagnetic commutation component disclosed herein.

[0025] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0026] 100 - Motor output shaft; 200 - Inclined surface; 300 - Synchronous brake wheel; 400 - Key;

[0027] 1-Base plate; 211-First braking component; 2111-Slide rail; 2112-Brake block; 2113-Baffle; 2114-Brake skin; 212-Second braking component; 213-Elastic component; 221-Solenoid directional valve; 222-Brake drive component; 2221-Cylinder; 2222-Air pipe; 2223-Wheel frame; 2224-Guide wheel; 3-Multi-way valve. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0030] Currently, electric motor braking, especially for small electric motors, typically involves adding an electromagnetic brake to the motor's tail. These brakes are generally classified into two types: energized braking and de-energized braking. Usually, one type is selected for field use. However, when the braking method of certain motors needs to be changed, the other type of brake must be installed, thus increasing the cost of spare parts in the field. Especially when using de-energized brakes, the air gap needs to be adjusted as the brake pads wear, increasing the amount of field maintenance required.

[0031] Based on this, this disclosure provides a pneumatically controlled motor brake, comprising a base plate and a braking unit. The braking unit includes a braking assembly and an electromagnetic reversing assembly. The braking assembly includes a first braking element, a second braking element, and an elastic element disposed opposite to each other on both sides of the motor output shaft. The elastic element applies a force to the first and second braking elements against the motor output shaft. The electromagnetic reversing assembly includes an electromagnetic reversing valve and a braking drive element. The braking drive element is connected to the first and second braking elements and is used to drive the first and second braking elements to separate from the motor output shaft. The electromagnetic reversing valve is connected to the braking drive element and has an energized braking state and an de-energized braking state. By implementing the technical solution of this disclosure, when certain motor braking methods need to be changed on-site, the braking method conversion can be completed without installing another type of brake.

[0032] The pneumatically controlled motor brake will be described in detail below through specific embodiments:

[0033] Reference Figures 1 to 3As shown, a first aspect of this disclosure provides a pneumatically controlled motor brake, including a base plate 1 and a braking part. The base plate 1 is provided with a through hole for a motor output shaft 100. The braking part is arranged circumferentially along the through hole for the motor output shaft 100. The braking part includes a braking assembly and an electromagnetic reversing assembly. The braking assembly includes a first braking member 211, a second braking member 212, and an elastic member 213 disposed opposite to each other on both sides of the motor output shaft 100. The elastic member 213 is used to apply the first braking member 211 and the force exerted by the first braking member 211 against the motor output shaft 100. The electromagnetic reversing assembly includes an electromagnetic reversing valve 221 and a brake drive member 222. The brake drive member 222 is connected to the first braking member 211. The actuator 211 and the second brake 212, and the brake drive 222 are used to drive the first brake 211 and the second brake 212 to separate from the motor output shaft 100; the electromagnetic reversing valve 221 is connected to the brake drive 222, and the electromagnetic reversing valve 221 has an energized braking state and an de-energized braking state. In the de-energized braking state, when the coil of the electromagnetic reversing valve 221 is not energized, the first brake 211 and the second brake 212 are in contact with the motor output shaft 100 for braking; in the energized braking state, when the coil of the electromagnetic reversing valve 221 is not energized, the brake drive 222 drives the first brake 211 and the second brake 212 to separate from the motor output shaft 100.

[0034] The base plate 1 of this disclosure is mounted on the end cover of the motor tail as a mounting structure for the braking unit. The base plate 1 has a through hole for the motor output shaft, through which the motor output shaft passes. The braking unit is arranged circumferentially along the through hole of the motor output shaft 100 to facilitate braking of the motor output shaft. The braking assembly of this disclosure includes a first braking element 211, a second braking element 212, and an elastic element 213 disposed opposite to each other on both sides of the motor output shaft 100. The first braking element 211 and the second braking element 212 are mirror images of each other and clamp the motor output shaft to achieve the braking effect. When the braking drive element 222 is not working, the first braking element 211 and the second braking element 212 maintain the braking effect by abutting the motor output shaft 100 through the elastic element. When the braking drive element 222 is working, the first braking element 211 and the second braking element 212 separate and lose the braking effect. The key technical point of this disclosure is that it integrates de-energized braking and energized braking through an electromagnetic reversing valve 221. This disclosure relates to a pneumatically controlled motor brake. The power source for the brake drive component 222 can be a cylinder or a pneumatic drive component. Specifically, this disclosure uses a cylinder as the power source for the brake drive component 222.

[0035] Specifically, such as Figure 4As shown, when the coil of the electromagnetic reversing valve 221 is not energized, port PA is open, port PB is closed, and port BS is open; when the coil is energized, port PB is open, port PA is closed, and port AR is open. Port A of cylinder 2221 is the rod chamber through which the cylinder rod retracts, and port B is the rodless chamber through which the cylinder rod extends. When this brake is used as a de-energized brake: ... Figure 4 As shown in the air circuit diagram, when the coil of the electromagnetic reversing valve 221 is not energized, port PA is open, port PB is closed, and port BS is open. Gas enters the air pipe 2222 from port PA of the electromagnetic reversing valve 221 to supply air to port A of cylinder 2221. At the same time, the gas in the rodless chamber of cylinder 2221 enters port B of the electromagnetic reversing valve 221 from port B of cylinder 2221 through the air pipe 2222 and is discharged from port S. This ensures that the cylinder rod of cylinder 2221 is continuously in the retracted state, and the brake drive component 222 is in a non-operating state. At this time, the first brake component 211 and the second brake component 212 are in close contact with the synchronous brake wheel 300, enabling the brake to perform a braking function. When the coil of the electromagnetic reversing valve 221 is energized, port PB is open, port PA is closed, and port AR is open. Gas enters the air pipe 2222 through port PB of the electromagnetic reversing valve 221 to supply air to port B of the cylinder 2221. At the same time, the gas in the rod chamber of the cylinder 2221 enters port A of the electromagnetic reversing valve 221 through port A of the cylinder 2221 via the air pipe 2222 and is discharged through port R. This ensures that the cylinder rod of the cylinder 2221 is continuously in the extended state, and the brake drive component 222 is in the working state. The brake drive component 222 pushes the first brake component 211 and the second brake component 212 to separate from the synchronous brake wheel 300, so that the brake loses its braking effect.

[0036] When the brake is used as an energized brake: the air pipes at ports A and B of the electromagnetic reversing valve 221 are swapped; when the coil of the electromagnetic reversing valve 221 is not energized, port PA is open, port PB is closed, and port BS is open. Gas enters the air pipe 2222 from port PA of the electromagnetic reversing valve 221 to supply air to port B of the cylinder 2221. At the same time, the gas in the rod chamber of the cylinder 2221 enters the port B of the electromagnetic reversing valve 221 from port A of the cylinder 2221 through the air pipe 2222 and is discharged from port S. Thus, the cylinder rod of the cylinder 2221 is continuously in the extended state, the brake drive 222 is in the working state, and the brake drive 222 pushes the first brake 211 and the second brake 212 to separate from the synchronous brake wheel 300, so that the brake loses its braking effect.

[0037] When the coil of the electromagnetic reversing valve 221 is energized, port PB is open, port PA is closed, and port AR is open. Gas enters the air pipe 2222 through port PB of the electromagnetic reversing valve 221 to supply air to port A of the cylinder 2221. At the same time, the gas in the rodless chamber of the cylinder 2221 enters the port A of the electromagnetic reversing valve 221 through port B of the cylinder 2221 via the air pipe 2222 and is discharged through port R. This ensures that the cylinder rod of the cylinder 2221 is continuously in the retracted state. It should be noted that if the electromagnetic reversing valve 221 coil is energized before being used for energized braking, and the cylinder rod of cylinder 2221 is extended from the first brake element 211 and the second brake element 212 and separated from the synchronous brake wheel 300, then the energization of the electromagnetic reversing valve 221 coil causes the brake drive element 222 to be in working state. The brake drive element 222 will eliminate the force on the first brake element 211 and the second brake element 212, so that the first brake element 211 and the second brake element 212 are in close contact with the synchronous brake wheel 300, and the brake has a braking effect. Conversely, if the first brake element 211 and the second brake element 212 are in close contact with the synchronous brake wheel 300 before the electromagnetic reversing valve 221 coil is energized (the cylinder rod is in the retracted state), then the brake drive element 222 is in a non-working state. During the switching process between the energized brake and the de-energized brake, the driving state of the brake drive component 222 also changes. In the de-energized brake state, when the coil of the electromagnetic reversing valve 221 is not energized, the cylinder rod of the cylinder 2221 remains in the retracted state. In the energized brake state, when the coil of the electromagnetic reversing valve 221 is energized, the cylinder rod of the cylinder 2221 remains in the retracted state.

[0038] In some embodiments, the first braking member 211 includes a slide rail 2111, a braking block 2112, a baffle 2113, and a brake pad 2114. The braking block 2112 is slidably connected to the motor output shaft 100 via the slide rail 2111. The braking block 2112 has a braking surface facing the motor output shaft 100. The brake pad 2114 is disposed on the braking surface. The elastic member 213 abuts against the baffle 2113 and the braking block 2112.

[0039] In this embodiment, the first braking member 211 and the second braking member 212 of this disclosure have the same structure, such as... Figure 2 As shown, the brake block 2112 is slidably connected to the motor output shaft 100 via the slide rail 2111. The brake block 2112 has a braking surface facing the motor output shaft 100. Braking is achieved by sliding the brake block 2112, which reduces structural components and makes the braking effect more direct and efficient.

[0040] In some embodiments, the number of slides 2111 is set to two, the two ends of the brake block 2112 are slidably connected to the two slides respectively, the two slides 2111 are connected to the baffle 2113, and the cross sections of the two slides 2111 and the baffle 2113 form a U shape.

[0041] In this embodiment, the number of slides 2111 is set to two, that is, the first brake 211 and the second brake 212 are the same, with four slides 2111. The four slides 2111 are symmetrically fixed to the base plate 1 with the motor output shaft 100 as the center point. Moreover, the cross-section of the two slides 2111 and the baffle 2113 forms a U-shape to better install the elastic element 213, so that the elastic element 213 is confined in the enclosed space to constrain the deformation stroke of the elastic element 213. Further, the elastic element 213 is set as a spring or an elastic pad, and this disclosure specifically selects a spring.

[0042] In some embodiments, the braking surface is configured as an arc. In this embodiment, the braking surface of the present disclosure is configured as an arc, and the arc-shaped braking surfaces of the first braking member 211 and the second braking member 212 can better fit the motor output shaft 100 to improve the braking effect.

[0043] In some embodiments, the brake drive component 222 includes a cylinder 2221, an air pipe 2222, and a drive wheel assembly. The cylinder 2221 is connected to the solenoid reversing valve 221 via the air pipe 2222. The drive wheel assembly includes a wheel frame 2223 and a guide wheel 2224. The wheel frame 2223 is connected to the cylinder rod of the cylinder 2221. The guide wheel 2224 is disposed on opposite sides of the wheel frame 2223. The first brake component 211 and the second brake component 212 are slidably connected to the guide wheel 2224. An inclined surface 200 is provided at the connection between the first brake component 211 and the second brake component 212 and the guide wheel 2224. The inclined surface 200 gradually transitions from the side away from the motor output shaft 100 to the side closer to the motor output shaft 100.

[0044] In this embodiment, cylinder 2221 drives wheel frame 2223 to move closer to or further away from motor output shaft 100. Guide wheel 2224 on wheel frame 2223 slides along inclined plane 200. Because the lengths of wheel frame 2223 and guide wheel 2224 are fixed, by gradually pushing the first brake 211 and second brake 212 in opposite directions through sliding on inclined plane 200, both lose their braking effect. Specifically, as... Figure 3 As shown, two opposing inclined planes 200 form a V-shaped space, with the larger diameter side of the V-shape away from the motor output shaft 100. When the wheel frame 2223 and the guide wheel 2224 are at their maximum diameter positions, the first brake member 211 and the second brake member 212 engage with the synchronous brake wheel 300 on the motor output shaft 100. Furthermore, guide wheel grooves can be formed on the inclined planes 200 to limit the sliding trajectory of the guide wheel 2224.

[0045] In some embodiments, multiple multi-way valves 3 are provided, and the number of cylinders 2221 is set to multiple. Multiple cylinders 2221 are correspondingly provided with multiple drive wheel sets. At least two sets of the drive wheel sets are arranged on opposite sides of the motor output shaft 100. The multi-way valves 3 are connected to the cylinders 2221 and the solenoid directional valve 221, and the multi-way valves 3 are used to connect the multiple cylinders 2221 in parallel with the solenoid directional valve 221. In this embodiment, the multi-way valves 3 are used to enable one solenoid directional valve 221 to synchronously control multiple cylinders 2221. At least two sets of the drive wheel sets are arranged on opposite sides of the motor output shaft 100 to push the first brake member 211 and the second brake member 212 from both sides, thereby better ensuring the synchronous movement of the first brake member 211 and the second brake member 212. Further, the number of multi-way valves 3 is set to two, and the multi-way valves 3 are set to three-way valves, and the number of cylinders 2221 is set to two.

[0046] In some embodiments, the motor output shaft through hole is located at the center of the base plate 1. In this embodiment, this facilitates the mounting layout of the braking unit.

[0047] A second aspect of this disclosure provides an electric motor, including the pneumatically controlled motor brake provided in the first aspect of this disclosure.

[0048] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0049] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," 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 disclosure and simplifying the description, and do not indicate or imply that the device or unit 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 disclosure.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. 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.

[0051] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A pneumatically controlled motor brake, characterized in that, The system includes a base plate and a braking unit. The base plate has a through hole for the motor output shaft, and the braking unit is arranged circumferentially along the through hole for the motor output shaft. The braking unit includes a braking assembly and an electromagnetic reversing assembly. The braking assembly includes a first braking element, a second braking element, and an elastic element that are disposed opposite to each other on both sides of the motor output shaft. The elastic element is used to apply a force that the first braking element and the second braking element abut against the motor output shaft. The electromagnetic commutation assembly includes an electromagnetic commutation valve and a braking drive component. The braking drive component is connected to the first braking component and the second braking component, and is used to drive the first braking component and the second braking component to separate from the motor output shaft. The electromagnetic reversing valve is connected to the braking drive, and the electromagnetic reversing valve has an energized braking state and an de-energized braking state. In the de-energized braking state, when the coil of the electromagnetic reversing valve is not energized, the first braking element and the second braking element are in contact with the motor output shaft for braking. In the energized braking state, when the coil of the electromagnetic reversing valve is not energized, the braking drive drives the first braking element and the second braking element to separate from the motor output shaft.

2. The pneumatically controlled motor brake according to claim 1, characterized in that, The first braking component includes a slide rail, a brake block, a baffle, and a brake pad. The brake block is slidably connected to the motor output shaft via the slide rail. The brake block has a braking surface facing the motor output shaft. The brake pad is disposed on the braking surface. The elastic element abuts against the baffle and the brake block.

3. The pneumatically controlled motor brake according to claim 2, characterized in that, The number of slides is set to two, and the two ends of the brake block are slidably connected to the two slides respectively. The two slides are connected to the baffle, and the cross-section of the two slides and the baffle forms a U-shape.

4. The pneumatically controlled motor brake according to claim 2 or 3, characterized in that, The braking surface is set to an arc shape.

5. The pneumatically controlled motor brake according to claim 1, characterized in that, The braking drive component includes a cylinder, an air pipe, and a drive wheel assembly. The cylinder is connected to the solenoid directional valve via the air pipe. The drive wheel assembly includes a wheel frame and guide wheels. The wheel frame is connected to the cylinder rod of the cylinder. The guide wheels are disposed on opposite sides of the wheel frame. The first brake and the second brake are slidably connected to the guide wheels. An inclined surface is provided at the connection between the first brake and the second brake and the guide wheels. The inclined surface gradually transitions from the side away from the motor output shaft to the side closer to the motor output shaft.

6. The pneumatically controlled motor brake according to claim 5, characterized in that, The system is also equipped with multiple multi-way valves, and the number of cylinders is set to multiple. Each cylinder is equipped with a corresponding set of multiple drive wheel sets. At least two sets of the multiple drive wheel sets are arranged on opposite sides of the motor output shaft. The multi-way valve is connected to the cylinder and the solenoid directional valve, and the multi-way valve is used to connect the multiple cylinders in parallel to the solenoid directional valve.

7. The pneumatically controlled motor brake according to claim 6, characterized in that, The number of multi-way valves is set to two, and the multi-way valves are set to three-way valves. The number of cylinders is set to two.

8. The pneumatically controlled motor brake according to claim 1, characterized in that, The through hole for the motor output shaft is located at the center of the base plate.

9. The pneumatically controlled motor brake according to claim 1, characterized in that, The elastic element is configured as a spring or an elastic pad.

10. An electric motor, characterized in that, The pneumatically controlled motor brake includes any one of claims 1 to 9.

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