A sealed electromagnetic brake without positioning post gap uniformity

Abstract

The utility model discloses a kind of sealing electromagnetic brakes with uniform gap between no positioning column, belong to electromagnetic brake technical field, including yoke, moving plate, rotor assembly and flange, the outer ring of one side of yoke towards flange is equipped with circular plate, the position of yoke corresponding circular plate is equipped with the annular groove of cooperation, circular plate is inserted into the annular groove, flange and yoke are also connected by internal hexagonal cylindrical head screw and cross slot countersunk head screw;The middle part of yoke is equipped with spring and compression assembly, and the compression assembly is detachably connected with the yoke.The utility model is directly assembled by flange and yoke by setting circular plate and annular groove, cancel positioning column, only need to grind and process this side of flange before assembly, make it reach the required flatness, it can guarantee the gap uniformity between moving plate and flange when moving, the processing and installation steps of positioning column are saved, and installation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic brake technology, and in particular relates to a sealed electromagnetic brake with uniform gap and no positioning pin. Background Technology

[0002] like Figure 1 As shown, traditional electromagnetic brakes usually require the installation of a positioning pin 5 when installing the flange. The positioning pin 5 and the corresponding positioning hole cooperate to ensure the relative position of the flange 4 and the magnetic yoke 1. This requires high machining accuracy of the positioning pin 5 and alignment during assembly, which is troublesome.

[0003] Meanwhile, electromagnetic brakes adjust the torque by adding shims or replacing springs to adjust the spring force. However, due to the sealed structure of sealed electromagnetic brakes, replacing the spring is more troublesome and requires disassembling the brake before it can be replaced.

[0004] To address the aforementioned issues, the inventors proposed a sealed electromagnetic brake that eliminates the need for a positioning pin, which facilitates flange installation and also allows for easy spring replacement. Utility Model Content

[0005] The purpose of this invention is to provide a sealed electromagnetic brake with uniform gap without positioning columns. By eliminating the positioning columns, the flange and magnetic yoke are directly assembled. Only one side of the flange needs to be ground before assembly to achieve the required flatness, which can ensure that the gap between the moving plate and the flange is uniform during movement, thus eliminating the need for the processing and installation of positioning columns.

[0006] The objective of this utility model is achieved through the following technical solution: A sealed electromagnetic brake with uniform gap and no positioning pins includes a magnetic yoke, a moving plate, a rotor assembly, and a flange. The flange has an annular plate on its outer ring facing the magnetic yoke. The magnetic yoke has a matching annular groove corresponding to the position of the annular plate. The annular plate is inserted into the annular groove. The flange and the magnetic yoke are also connected by hexagonal head screws and Phillips head screws. The magnetic yoke has a spring and a clamping assembly in its middle, and the clamping assembly is detachably connected to the magnetic yoke.

[0007] Furthermore, the outer diameter of the moving plate and rotor assembly is smaller than the inner diameter of the annular groove. A plurality of hexagonal head screws and Phillips head countersunk screws are arranged in a circumferential array on the flange plate. The hexagonal head screws and Phillips head countersunk screws are arranged alternately. The hexagonal head screws and Phillips head countersunk screws are located on the outside of the moving plate and rotor assembly and on the inside of the annular groove.

[0008] Furthermore, a first countersunk hole is provided on the side of the magnetic yoke away from the flange, corresponding to the position of the hexagon socket head cap screw, through which the hexagon socket head cap screw passes. A first sealing gasket is provided at the step of the first countersunk hole.

[0009] Furthermore, a second countersunk hole is provided on the side of the flange away from the magnetic yoke, corresponding to the position of the cross-slot countersunk screw, and one end of the cross-slot countersunk screw extends into the magnetic yoke.

[0010] Furthermore, a first sealing ring is provided on the inner side of the annular groove, and a second sealing ring is provided on the outer side of the flange located on the hexagonal head screw and the Phillips head countersunk screw.

[0011] Furthermore, the magnetic yoke has a third countersunk hole in the middle, and the clamping assembly includes an integrally connected countersunk head, a screw part, and a limiting part, and the screw part is threadedly connected to the inner side of the third countersunk hole.

[0012] Furthermore, the outer diameter of the screw portion is adapted to the diameter of the spring, the outer diameter of the limiting portion is smaller than the inner diameter of the spring, one end of the spring is sleeved on the limiting portion, the other end of the spring abuts against the moving plate, and the inner diameter of the spring is larger than the center hole of the moving plate.

[0013] Furthermore, the countersunk head is located at the step of the third countersunk hole, the step of the third countersunk hole is provided with a second sealing gasket, and the countersunk head is provided with an internal hexagonal socket.

[0014] The beneficial effects of this utility model are: 1) By setting up a circular plate and annular groove, the positioning column is eliminated, and the flange and magnetic yoke are directly assembled. Only one side of the flange needs to be ground before assembly to achieve the required flatness, which can ensure that the gap between the moving plate and the flange is uniform when the plate moves. This eliminates the processing and installation steps of the positioning column and improves installation efficiency.

[0015] 2) The spring compression can be adjusted by screwing in or out the clamping assembly. Screwing out the clamping assembly also allows for the replacement of springs of different lengths, thereby adjusting the braking torque. The removable clamping assembly improves the efficiency of spring replacement and avoids disassembling the entire brake system. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a conventional electromagnetic brake in the background art; Figure 2 This is a top view of a sealed electromagnetic brake with uniform gap and no positioning column according to the present invention. Figure 3 for Figure 2 Sectional view at point AA; Figure 4 This is a cross-sectional view of the magnetic yoke in this utility model; Figure 5 This is a schematic diagram of the clamping component in this utility model; In the figure, 1-magnetic yoke, 11-annular groove, 12-first countersunk hole, 13-third countersunk hole, 14-first sealing ring, 15-first sealing gasket, 16-second sealing gasket, 2-moving plate, 3-rotor assembly, 4-flange, 41-circular ring plate, 42-second sealing ring, 43-second countersunk hole, 5-locating pin, 6-hex socket head cap screw, 7-cross countersunk screw, 8-clamping assembly, 81-countersunk head, 82-screw part, 83-limiting part, 9-spring. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] See Figure 1 The image shows a cross-sectional view of a traditional electromagnetic brake in the background art. When installing the flange 4, a positioning pin 5 is usually also required. The positioning pin 5 and the corresponding positioning hole cooperate to ensure the relative position of the flange 4 and the magnetic yoke 1. This requires high machining accuracy of the positioning pin 5 and alignment during assembly, which is troublesome.

[0019] like Figures 2-5 This utility model provides a technical solution: like Figures 2-5 As shown, a sealed electromagnetic brake with uniform gap and no positioning pin includes a magnetic yoke 1, a moving plate 2, a rotor assembly 3, and a flange 4. The basic principle of the electromagnetic brake is as follows: a ring-shaped coil is provided inside the magnetic yoke 1. When current passes through the coil, it generates magnetic flux. The magnetic yoke 1 generates an electromagnetic attraction force on the moving plate 2 and attracts it to the end face of the magnetic yoke 1. By continuously energizing the moving plate 2, the moving plate 2 separates from the rotor assembly 3 after overcoming the elastic force of the spring 9, and the rotor assembly 3 continues to rotate. When the power is off, the moving plate 2 is released by the elastic force of the spring 9, and the moving plate 2 rejoins with the rotor assembly 3 to generate braking torque.

[0020] The flange 4 has an outer ring plate 41 facing the magnetic yoke 1. The magnetic yoke 1 has a corresponding annular groove 11 at the position of the annular plate 41. The annular plate 41 is inserted into the annular groove 11 to complete positioning and sealing. It can be seen that the outer diameter of the moving plate 2 and the rotor assembly 3 is smaller than the inner diameter of the annular groove 11, and the rotation of the moving plate 2 and the rotor assembly 3 will not interfere with the annular plate 41. By setting the annular plate 41 and the annular groove 11, the positioning pin 5 can be eliminated, and the flange 4 can be directly assembled with the magnetic yoke 1. Only one side of the flange 4 needs to be ground before assembly to achieve the required flatness, which can ensure that the gap between the moving plate 2 and the flange 4 is uniform during movement. This eliminates the machining and installation steps of the positioning pin 5 and improves installation efficiency.

[0021] Furthermore, flange 4 and magnetic yoke 1 are also connected by socket head cap screws 6 and countersunk head screws 7. For example... Figure 2 As shown, three socket head cap screws 6 and three Phillips head countersunk screws 7 are arranged in a circumferential array on the flange 4 plate. The socket head cap screws 6 and Phillips head countersunk screws 7 are arranged alternately. The socket head cap screws 6 and Phillips head countersunk screws 7 are located on the outside of the moving plate 2 and the rotor assembly 3 and on the inside of the annular groove 11 to avoid interference between the socket head cap screws 6 and Phillips head countersunk screws 7 and the moving plate 2 and the rotor assembly 3 inside.

[0022] Furthermore, such as Figure 3 and Figure 4 As shown, the magnetic yoke 1 has a first countersunk hole 12 on the side away from the flange 4, corresponding to the position of the internal hexagonal head screw 6. The internal hexagonal head screw 6 passes through the magnetic yoke 1 and the flange 4. The sealing of the connection is ensured by a first sealing washer 15 at the step of the first countersunk hole 12.

[0023] Meanwhile, a second countersunk hole 43 is provided on the side of the flange 4 away from the magnetic yoke 1, corresponding to the position of the cross-slot countersunk screw 7, and one end of the cross-slot countersunk screw 7 extends into the magnetic yoke 1.

[0024] Furthermore, a first sealing ring 14 is provided on the inner side of the annular groove 11 to improve the sealing effect of the connection between the annular plate 41 and the annular groove 11. At the same time, a second sealing ring 42 is provided on the outer side of the flange 4 located on the hexagonal head screw and the cross-slot countersunk screw 7.

[0025] Furthermore, the magnetic yoke 1 is provided with a spring 9 and a clamping assembly 8 in the middle. To facilitate the replacement of the spring 9 and the adjustment of the clamping degree of the spring 9, the clamping assembly 8 is detachably connected to the magnetic yoke 1.

[0026] like Figure 3 As shown, the magnetic yoke 1 has a third countersunk hole 13 in the middle, as... Figure 5As shown, the clamping assembly 8 includes an integrally connected countersunk head 81, a screw part 82, and a limiting part 83, wherein the screw part 82 is threadedly connected to the inner side of the third countersunk hole 13.

[0027] Since the outer diameter of the screw part 82 is adapted to the diameter of the spring 9, the outer diameter of the limiting part 83 is smaller than the inner diameter of the spring 9, one end of the spring 9 is sleeved on the limiting part 83, and the other end of the spring 9 abuts against the moving plate 2. The inner diameter of the spring 9 is larger than the center hole of the moving plate 2.

[0028] The above technical solution allows for adjustment of the spring 9's compression level by screwing in or out the clamping assembly 8. Simultaneously, screwing out the clamping assembly 8 allows for replacement of springs 9 of different lengths. Adjusting the screw-in depth of the clamping assembly 8 also adjusts the spring 9's compression level, thereby adjusting the braking torque. The removable clamping assembly 8 improves the efficiency of spring 9 replacement, avoids disassembling the entire brake, and prevents seal damage.

[0029] Furthermore, the countersunk head 81 is located at the step of the third countersunk hole 13, the step of the third countersunk hole 13 is provided with a second sealing gasket 16, and the countersunk head 81 is provided with an internal hexagonal socket.

[0030] Through the above technical solution, the clamping component 8 can be easily screwed in or out using a hexagonal screw through the internal hexagonal socket.

[0031] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A sealed electromagnetic brake with uniform gap and no positioning pins, comprising a magnetic yoke (1), a moving plate (2), a rotor assembly (3), and a flange (4), characterized in that: The flange (4) has an outer ring plate (41) on the side facing the magnetic yoke (1). The magnetic yoke (1) has a matching annular groove (11) corresponding to the position of the annular plate (41). The annular plate (41) is inserted into the annular groove (11). The flange (4) and the magnetic yoke (1) are also connected by hexagonal head screws (6) and cross-head countersunk screws (7). The magnetic yoke (1) has a spring (9) and a clamping assembly (8) in the middle. The clamping assembly (8) is detachably connected to the magnetic yoke (1).

2. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 1, characterized in that: The outer diameter of the moving plate (2) and the rotor assembly (3) is smaller than the inner diameter of the annular groove (11). A plurality of hexagonal head screws (6) and cross-head countersunk screws (7) are arranged in a circumferential array on the flange (4) plate. The hexagonal head screws (6) and cross-head countersunk screws (7) are arranged alternately. The hexagonal head screws (6) and cross-head countersunk screws (7) are located on the outside of the moving plate (2) and the rotor assembly (3) and on the inside of the annular groove (11).

3. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 2, characterized in that: The magnetic yoke (1) has a first countersunk hole (12) on the side away from the flange (4) corresponding to the position of the internal hexagonal head screw (6). The internal hexagonal head screw (6) passes through the magnetic yoke (1) and the flange (4). A first sealing gasket (15) is provided at the step of the first countersunk hole (12).

4. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 2, characterized in that: The flange (4) has a second countersunk hole (43) on the side away from the magnetic yoke (1) corresponding to the position of the cross-slot countersunk screw (7), and one end of the cross-slot countersunk screw (7) extends into the magnetic yoke (1).

5. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 2, characterized in that: The inner side of the annular groove (11) is provided with a first sealing ring (14), and the flange (4) is provided with a second sealing ring (42) on the outside of the internal hexagonal head screw (6) and the cross-slot countersunk screw (7).

6. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 1, characterized in that: The magnetic yoke (1) has a third countersunk hole (13) in the middle. The clamping assembly (8) includes a countersunk head (81), a screw part (82) and a limiting part (83) that are integrally connected. The screw part (82) is threadedly connected to the inner side of the third countersunk hole (13).

7. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 6, characterized in that: The outer diameter of the screw part (82) is adapted to the diameter of the spring (9), the outer diameter of the limiting part (83) is smaller than the inner diameter of the spring (9), one end of the spring (9) is sleeved on the limiting part (83), the other end of the spring (9) abuts against the moving plate (2), and the inner diameter of the spring (9) is larger than the center hole of the moving plate (2).

8. The sealed electromagnetic brake with uniform gap and no positioning pin as described in claim 6, characterized in that: The countersunk head (81) is located at the step of the third countersunk hole (13), and a second sealing gasket (16) is provided at the step of the third countersunk hole (13). The countersunk head (81) is provided with an internal hexagonal socket.

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