Full-sealed electromagnetic brake capable of preventing rotation through elastic cylindrical pin

Abstract

The embodiment of the utility model discloses a full-sealed electromagnetic brake with an elastic cylindrical pin for preventing rotation, which is characterized by comprising a magnet yoke, a coil, an armature, a brake disc, a friction disc and a gear sleeve, the magnet yoke is provided with a suction surface, and the armature is assembled with the magnet yoke through the suction surface; a plurality of counter bores are formed in the pull-in surface, the counter bores are uniformly distributed in the pull-in surface, screw holes are formed in the counter bores, and elastic cylindrical pins are assembled in the counter bores; the gear sleeve is assembled on the armature and the brake disc, a drill hole is formed in the position, corresponding to the elastic cylindrical pin, of the armature, the elastic cylindrical pin is located in the drill hole, the armature is matched with the magnet yoke through the elastic cylindrical pin, and a plurality of buffering parts are arranged on the side, facing the armature, of the magnet yoke. The air gap between the armature and the magnet yoke can be adjusted through the matching relation of the elastic cylindrical pin, the counter bore and the screw hole, and the electromagnetic brake can be conveniently adjusted through the air gap.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic brakes, and in particular to a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation. Background Art

[0002] The electromagnetic brake is composed of a yoke, a coil, an armature, a brake disc, a friction plate, a main spring, a gear sleeve and other parts. It is generally installed at the rear end of the motor to brake and maintain position. Most brakes are open and have no anti-immersion function, and at most have anti-splashing function. In many places, due to the presence of water and pollutants, the brake must be waterproof and anti-leakage, that is, the brake is a fully sealed structure. A fully sealed electromagnetic brake structure with an elastic cylindrical pin to prevent rotation is now provided.

[0003] Ordinary brakes rely on hollow bolts or spacers installed on the yoke to limit the rotation of the armature to transmit torque. If a fully sealed brake is designed with hollow bolts to prevent rotation, the air gap cannot be adjusted. Changes in the air gap will affect the performance of the electromagnetic brake. For example, adjustment of the air gap width can affect the stability of the electromagnetic braking force, and the size of the air gap can also directly affect the size of the electromagnetic force.

[0004] Therefore, in order to solve the above problems, the present application needs to provide a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation. The air gap between the armature and the yoke can be adjusted by setting the matching relationship between the elastic cylindrical pin and the countersunk hole and the screw hole, so that the electromagnetic brake can be adjusted conveniently through the air gap.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] The present application provides a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation, comprising: a yoke, a coil, an armature, a brake disc, a friction disc and a gear sleeve;

[0008] The magnetic yoke is provided with an engaging surface, and the armature is assembled with the magnetic yoke through the engaging surface;

[0009] A plurality of countersunk holes are arranged on the suction surface, and the plurality of countersunk holes are evenly distributed on the suction surface. Screw holes are arranged in the countersunk holes, and elastic cylindrical pins are installed in the countersunk holes.

[0010] The gear sleeve is mounted on the armature and the brake disc;

[0011] A drill hole is provided on the armature at a position corresponding to the elastic cylindrical pin, the elastic cylindrical pin is located in the drill hole, the armature cooperates with the yoke through the elastic cylindrical pin, and a plurality of buffer portions are provided on the side of the yoke facing the armature.

[0012] Optionally, in some embodiments of the present application, the inner diameter of the screw hole is smaller than the inner diameter of the counterbore.

[0013] Optionally, in some embodiments of the present application, a screw is further included, the elastic cylindrical pin is sleeved outside the screw, and the elastic cylindrical pin is partially located in the countersunk hole.

[0014] Optionally, in some embodiments of the present application, a washer is provided between the elastic cylindrical pin and the screw.

[0015] Optionally, in some embodiments of the present application, the buffer portion includes a groove, the groove is arranged on the attraction surface of the yoke, and an O-ring is arranged in the groove.

[0016] Optionally, in some embodiments of the present application, a friction disk is further included, a groove is provided on the side of the friction disk facing the magnetic yoke, and a buffer ring is provided in the groove.

[0017] Optionally, in some embodiments of the present application, an encoder hole is provided on the magnetic yoke, and three encoder holes are provided, and the three encoder holes are evenly distributed on the magnetic yoke.

[0018] Optionally, in some embodiments of the present application, an inner hole is provided on the yoke, and an oil seal is provided on the inner hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the embodiment of the present application, the armature can be assembled on the yoke by providing a countersunk hole and a screw hole, and an elastic cylindrical pin is provided in the countersunk hole. The elastic cylindrical pin cooperates with a washer to limit the armature, and the air gap between the yoke and the armature can be adjusted, so that the electromagnetic brake can be adjusted through the air gap.

[0021] In the embodiment of the present application, a groove and an O-ring are provided on the magnetic yoke, which are used in conjunction with a friction disk to provide a seal between the yoke and the motor end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the overall structure of a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a side cross-sectional structure of a fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation provided in an embodiment of the present application;

[0025] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 5 The overall structure of the magnetic yoke provided in the embodiment of the present application is schematically shown Figure 1 ;

[0028] Figure 6 The overall structure of the magnetic yoke provided in the embodiment of the present application is schematically shown Figure 2 .

[0029] Description of reference numerals:

[0030] 100, yoke; 110, suction surface; 120, countersunk hole; 121, screw hole; 130, buffer part; 131, groove; 132, O-ring; 140, encoder hole; 150, inner hole; 151, oil seal; 200, armature; 210, drill hole; 300, elastic cylindrical pin; 400, gear sleeve; 500, brake disc; 600, screw; 700, washer; 800, friction disc. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0032] Specifically, Figure 1-Figure 6 As shown, in the embodiment of the present application, a fully sealed electromagnetic brake with an elastic cylindrical pin 300 for anti-rotation is provided, in which a yoke 100 is provided, and the yoke 100 is assembled and connected with the armature 200. Specifically, a suction surface 110 is provided on the yoke 100, and the armature 200 is assembled with the yoke 100 through the suction surface 110. A plurality of countersunk holes 120 are provided on the suction surface 110, and there are 4 countersunk holes 120, and the four countersunk holes 120 are evenly distributed on the suction surface 110. Screw holes 121 are also provided in the four countersunk holes 120, and the countersunk holes 120 are connected with the screw holes 121, and the screw holes 121 are located on the side of the countersunk holes 120 away from the suction surface 110, and the inner diameter of the screw hole 121 is smaller than the inner diameter of the countersunk hole 120.

[0033] An elastic cylindrical pin 300 is arranged in the countersunk hole 120, and the length of the elastic cylindrical pin 300 is greater than the depth of the countersunk hole 120, so that the elastic cylindrical pin 300 is partially located in the countersunk hole 120, and is connected and assembled with the armature 200 at a portion of the position where the elastic cylindrical pin 300 is exposed from the countersunk hole 120. A drill hole 210 is opened on the armature 200 at a position corresponding to the elastic cylindrical pin 300, and the inner diameter of the drill hole 210 is equal to the diameter of the elastic cylindrical pin 300, so that the armature 200 can be limited by the elastic cylindrical pin 300 and can only slide along the elastic cylindrical pin 300, but cannot rotate relative to the yoke 100.

[0034] In the above structure, a screw 600 is arranged in the elastic cylindrical pin 300, and the elastic cylindrical pin 300 is sleeved on the screw 600, and the screw 600 is threadedly connected with the screw hole 121 through the countersunk hole 120, so as to limit the armature 200 on the yoke 100. When the screw 600 is assembled with the screw hole 121 on the yoke 100 through the elastic cylindrical pin 300, the elastic cylindrical pin 300 and the countersunk hole 120 will have an interference fit, and can withstand a certain rotational torque under the cooperation of the electromagnetic brake, so as to play an anti-rotation role.

[0035] Among them, on the basis of the above structure, a gasket 700 is further provided, such as Figure 3 As shown, the washer 700 is arranged on one end of the elastic cylindrical pin 300 away from the yoke 100, and the washer 700 is sleeved on the screw 600, so that the washer 700 is fixed to the elastic cylindrical pin 300 by the screw 600, and the screw 600 can limit the armature 200 on the yoke 100 through the elastic cylindrical pin 300 and the washer 700, so that the yoke 100 and the armature 200 form a whole.

[0036] A buffer portion 130 is also provided on the yoke 100. The buffer portion 130 is provided on a side of the yoke 100 facing the armature 200. In the embodiment of the present application, four buffer portions 130 are provided. The four buffer portions 130 are evenly distributed on the yoke 100. The buffer portion 130 includes a groove 131. The groove 131 is provided on the suction surface 110. An O-ring 132 is provided in the groove 131. The O-ring 132 abuts against the armature 200 to seal the armature 200.

[0037] In the embodiment of the present application, when a friction disk 800 is provided, a recess is provided on the friction disk 800 in the direction toward the position of the yoke 100, and a buffer ring is provided in the recess, which can seal the electromagnetic brake.

[0038] An encoder hole 140 is provided on the yoke 100 at a position away from the armature 200. The encoder hole 140 is located on one side of the yoke 100 away from the armature 200. In the embodiment of the present application, three encoder holes 140 are provided. The three encoder holes 140 are evenly distributed on the yoke 100, so that the user can install the encoder through the encoder hole 140 conveniently.

[0039] In the embodiment of the present application, an inner hole 150 is further provided. The inner hole 150 is opened on the yoke 100 , and an oil seal 151 is provided in the inner hole 150 . The yoke 100 can be sealed as a whole by the provision of the oil seal 151 .

[0040] In the embodiment of the present application, a brake disc 500 is arranged between the friction disc 800 and the armature 200 , and a gear sleeve 400 is sleeved on both the brake disc 500 and the armature 200 .

[0041] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A fully sealed electromagnetic brake with an elastic cylindrical pin to prevent rotation, characterized in that: include: Yoke, coil, armature, brake disc, friction disc and gear sleeve; The magnetic yoke is provided with an engaging surface, and the armature is assembled with the magnetic yoke through the engaging surface; A plurality of countersunk holes are arranged on the suction surface, and the plurality of countersunk holes are evenly distributed on the suction surface. Screw holes are arranged in the countersunk holes, and elastic cylindrical pins are installed in the countersunk holes. The gear sleeve is mounted on the armature and the brake disc; A drill hole is provided on the armature at a position corresponding to the elastic cylindrical pin, the elastic cylindrical pin is located in the drill hole, the armature cooperates with the yoke through the elastic cylindrical pin, and a plurality of buffer portions are provided on the side of the yoke facing the armature.

2. A fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: The inner diameter of the screw hole is smaller than the inner diameter of the counterbore.

3. The fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: A screw is also included, the elastic cylindrical pin is sleeved outside the screw, and the elastic cylindrical pin is partially located in the countersunk hole.

4. A fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 3, characterized in that: A washer is arranged between the elastic cylindrical pin and the screw.

5. The fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: The buffer portion includes a groove, the groove is arranged on the attraction surface of the yoke, and an O-ring is arranged in the groove.

6. The fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: It also includes a friction disk, on which a groove is arranged on one side of the friction disk facing the magnetic yoke, and a buffer ring is arranged in the groove.

7. A fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: The magnetic yoke is provided with encoder holes, and three encoder holes are provided. The three encoder holes are evenly distributed on the magnetic yoke.

8. The fully sealed electromagnetic brake with elastic cylindrical pin anti-rotation according to claim 1, characterized in that: The magnetic yoke is provided with an inner hole, and the inner hole is provided with an oil seal.

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