Electromagnetic brake of three-phase asynchronous motor

Abstract

The utility model relates to the technical field of electromagnetic braking, and discloses an electromagnetic brake of a three-phase asynchronous motor, the electromagnetic brake comprises a supporting assembly, a dismounting assembly and an auxiliary assembly, one side of the supporting assembly is provided with the dismounting assembly, and the other side of the supporting assembly is provided with the auxiliary assembly; the supporting assembly comprises a shell and a braking assembly, an output shaft section is movably arranged in the shell through a bearing, a strip-shaped groove is formed in one side of the output shaft section, a fixing sleeve is movably arranged on the outer side of the output shaft section, and a fixing pin is movably arranged at the top end of the fixing sleeve in a penetrating mode through threads. The bottom end of the fixing pin is movably arranged on the inner wall of the strip-shaped groove, and a rotating disc is fixedly arranged on one side of the fixing sleeve. According to the electromagnetic brake of the three-phase asynchronous motor, the inserting plate is separated from the sliding groove by lifting the transverse plate upwards, the fixing sleeve is taken down from the output shaft section by rotating the fixing pin fixed through threads, maintenance and installation of the brake assembly are facilitated, the working efficiency is improved, and the practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic braking, in particular to an electromagnetic brake of a three-phase asynchronous motor. Background Art

[0002] The electromagnetic brake is a connector that transmits the torque of the active side to the passive side. It can be freely connected, disconnected or braked as needed. It has the advantages of compact structure, simple operation, sensitive response, long life, reliable use, and easy remote control. The electromagnetic brake is an ideal automation actuator in modern industry. It mainly plays the role of transmitting power and controlling motion in mechanical transmission systems.

[0003] The prior art patent document with publication number CN203035823U provides a high-efficiency electromagnetic brake, which includes a flange, a shaft, a rotor, an armature, a stator, a spring, an adjusting solenoid, an adjusting nut, and a sleeve. The spring is installed in the stator, the armature is installed on the stator through the adjusting solenoid, the sleeve is sleeved on the shaft, the rotor is installed on the sleeve, the rotor, the armature, and the stator are fixed together through the flange, and the stator is equipped with an adjusting nut. The product has a simple structure, reasonable design, high precision, fast brake engagement speed, increased from the original 10 seconds to 6-7 seconds, and the engagement capacity is increased by more than 2 times. The coil is not easily damaged, the performance is safe and reliable, and the service life of the brake is extended. It can be used in conjunction with high-tech and high-precision equipment.

[0004] However, since the prior art patent technology with publication number CN203035823U does not solve the problem that the brake device is inconvenient to disassemble, install and replace during use, does not solve the problem of replacing only the worn structure without replacing the entire equipment to reduce costs, and does not solve the problem that the traditional friction disc will be deformed when impacted by elastic force in only one direction, we propose a brake that is easy to disassemble and install, and can replace the easily worn structure. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The object of the present invention is to provide an electromagnetic brake for a three-phase asynchronous motor to solve the problem that the prior art patent technology with publication number CN203035823U proposed in the above background technology is not solved that the brake device is inconvenient to disassemble, install and replace during use; the problem that only the worn structure needs to be replaced without replacing the entire equipment to reduce costs; and the problem that the traditional friction disc will be deformed when it is impacted by elastic force in only one direction.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: comprising a support assembly, a disassembly assembly and an auxiliary assembly, wherein one side of the support assembly has a disassembly assembly, and the other side of the support assembly has an auxiliary assembly;

[0009] The supporting assembly includes a shell and a brake assembly, an output shaft section is movably arranged in the shell through a bearing, a strip groove is opened on one side of the output shaft section, a fixing sleeve is movably arranged on the outer side of the output shaft section, a fixing pin is movably arranged on the top end of the fixing sleeve through a thread, and the bottom end of the fixing pin is movably arranged on the inner wall of the strip groove, a rotating disk is fixedly arranged on one side of the fixing sleeve, first friction plates are fixedly arranged on both sides of the rotating disk, and a brake assembly is arranged on one side of the first friction plate.

[0010] Preferably, the brake assembly includes a friction assembly and an electromagnetic assembly, one side of the friction assembly includes an electromagnetic assembly, the friction assembly includes a second friction plate, one side of the second friction plate is movably provided with a first friction plate, the other side of the second friction plate is fixedly provided with a connecting plate, a blocking plate is fixedly provided in the connecting plate, and one side of the blocking plate is fixedly provided with a sliding rod, the shell can protect the internal structure to isolate the external environment and keep the internal structure stable, the blocking plate can reinforce the firmness of the sliding rod and the connecting plate, so that when the second friction plate decelerates the first friction plate, the structure is more secure to prevent the connecting plate from separating from the sliding rod, the sliding rod moves in the movable groove, the sliding rod and the movable groove can limit the position of the connecting plate so that the connecting plate can only move in the horizontal direction, the spring groove can limit the first spring so that the position of the first spring will not shift, the strip groove can adjust the horizontal and transverse position of the fixing sleeve through the fixing pin, and limit the horizontal and longitudinal position, the horizontal and longitudinal position of the rotating disk will not shift during the braking process, and will not affect the braking effect.

[0011] Preferably, the electromagnetic component includes a movable groove, the sliding rod is movably arranged in the movable groove, the movable groove is opened on one side of the main body, a spring groove is opened on one side of the main body, a first spring is movably arranged in the spring groove, one end of the first spring is movably arranged on one side of the connecting plate, and an electromagnetic coil is fixedly arranged inside the main body, and the electromagnetic coil can effectively generate and eliminate electromagnetic force.

[0012] Preferably, the disassembly assembly includes a fixing plate, the main body is fixedly arranged in the fixing plate, the top of the fixing plate is fixedly arranged at the bottom of the horizontal plate, a plug plate is fixedly arranged on one side of the horizontal plate, a slide bar is fixedly arranged on one side of the plug plate, the slide bar is movably arranged in the slide groove, the plug plate is movably arranged in the slide groove, the slide groove is opened at the top of the connecting block, and the connecting block is fixedly arranged on one side of the shell, the slide bar increases the horizontal and longitudinal restraining force of the plug plate on the connecting block, so that the torsion generated when the first friction plate and the second friction plate contact is offset, so that the plug plate and the connecting block are not easily deformed, and the connecting block and the plug plate are hinged by a pin, and the hinged pin can offset the vertical force, so that the connecting block and the plug plate will not separate.

[0013] Preferably, the auxiliary component includes a base and a heat dissipation component, the base is fixedly arranged at the bottom end of the shell, and the heat dissipation component is located on one side of the shell.

[0014] Preferably, the heat dissipation assembly includes a ventilation hole, and the ventilation hole is opened on one side of the shell.

[0015] Preferably, the heat dissipation assembly comprises a box body, the box body is fixedly arranged on one side of the shell, a protective net is fixedly arranged on a side of the box body away from the shell, a fan is arranged in the box body, and the fan is fixedly arranged at one end of the output shaft section.

[0016] Preferably, the heat dissipation assembly further comprises a frame, the frame is fixedly arranged on one side of the shell, and a ventilation screen is fixedly arranged on a side of the frame away from the shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The electromagnetic brake of the three-phase asynchronous motor can disengage the plug plate from the slide slot by pulling the horizontal plate upward, and remove the fixing sleeve from the output shaft section by rotating the fixing pin fixed by the thread, so as to facilitate the maintenance and installation of the brake assembly, improve work efficiency and increase practicality;

[0019] 2. The electromagnetic brake of the three-phase asynchronous motor can replace the worn structure by disengaging the plug plate from the slide slot to remove the movable connecting plate in the friction component from one side of the electromagnetic component, and then inserting the sliding rod on one side of the replaced connecting plate into the movable slot, thereby reducing maintenance costs;

[0020] 3. The electromagnetic brake of the three-phase asynchronous motor will lose the attraction of the electromagnetic coil when the power is off, so that the connecting plates on both sides of the turntable will exert impact force on it, thereby offsetting the impact force on the turntable, so that the turntable will not deviate to one side, reduce the degree of deformation, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the slider of the present invention;

[0024] Figure 4 The main three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 5 The main three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 6 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0027] In the figure: 1. support component; 11. shell; 12. brake component; 121. friction component; 1211. second friction plate; 1212. connecting plate; 1213. baffle; 1214. slide rod; 123. electromagnetic component; 1231. movable groove; 1232. main body; 1233. spring groove; 1234. first spring; 1235. electromagnetic coil; 13. output shaft section; 14. strip groove; 15. fixing sleeve; 16. fixing pin; 17. turntable; 18. first friction plate; 2. disassembly component; 21. fixing plate; 22. horizontal plate; 23. plug-in plate; 24. slide bar; 25. slide groove; 26. connecting block; 3. auxiliary component; 31. base; 32. heat dissipation component; 320. ventilation hole; 321. box; 322. protective net; 323. fan; 324. frame; 325. ventilation screen. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 6 , the present invention provides a technical solution: an electromagnetic brake of a three-phase asynchronous motor, comprising a support component 1, a disassembly component 2 and an auxiliary component 3, wherein the support component 1 has the disassembly component 2 on one side and the auxiliary component 3 on the other side;

[0030] The support assembly 1 includes a shell 11 and a brake assembly 12. An output shaft section 13 is movably arranged in the shell 11 through a bearing. A strip groove 14 is opened on one side of the output shaft section 13. A fixing sleeve 15 is movably arranged on the outer side of the output shaft section 13. A fixing pin 16 is movably arranged on the top of the fixing sleeve 15 through a thread. The bottom end of the fixing pin 16 is movably arranged on the inner wall of the strip groove 14. A turntable 17 is fixedly arranged on one side of the fixing sleeve 15. First friction plates 18 are fixedly arranged on both sides of the turntable 17. The brake assembly 12 is arranged on one side of the first friction plate 18.

[0031] The brake assembly 12 includes a friction assembly 121 and an electromagnetic assembly 123. The electromagnetic assembly 123 is provided on one side of the friction assembly 121. The friction assembly 121 includes a second friction plate 1211. The first friction plate 18 is movably provided on one side of the second friction plate 1211. A connecting plate 1212 is fixedly provided on the other side of the second friction plate 1211. A baffle 1213 is fixedly provided in the connecting plate 1212. A slide rod 1214 is fixedly provided on one side of the baffle 1213. The electromagnetic assembly 123 includes a movable groove 1231. The slide rod is movably provided in the movable groove 1231. The movable groove 1231 is opened on one side of the main body 1232. A spring groove 1233 is provided on one side of the main body 1232, a first spring 1234 is movably arranged in the spring groove 1233, one end of the first spring 1234 is movably arranged on one side of the connecting plate 1212, an electromagnetic coil 1235 is fixedly arranged inside the main body 1232, the disassembly component 2 includes a fixed plate 21, the main body 1232 is fixedly arranged in the fixed plate 21, the top of the fixed plate 21 is fixedly arranged at the bottom of the horizontal plate 22, a plug plate 23 is fixedly arranged on one side of the horizontal plate 22, a slide bar 24 is fixedly arranged on one side of the plug plate 23, the slide bar 24 is movably arranged in the slide groove 25, and the plug plate 23 is movably arranged in the slide groove 25, The slide groove 25 is provided at the top of the connecting block 26, and the connecting block 26 is fixedly arranged on one side of the housing 11. When the power is on, the output shaft section 13 rotates to make the turntable 17 rotate accordingly, and the electromagnetic coil 1235 generates an electromagnetic force to make the iron connecting plate 1212 adsorbed on one side of the main body 1232, and the slide rod slides in the movable groove 1231 to move toward the side of the main body 1232. At this time, the first friction plate 18 and the second friction plate 1211 are not in contact. When the power is off, the electromagnetic coils 1235 on both sides of the turntable 17 are in a power-off state, so that the connecting plate 1212 loses the attraction of the electromagnetic force, and then through the action of the first spring 1234 The force pushes the connecting plate 1212 to move toward the rotating disk 17. When the first friction plate 18 of the rotating disk 17 contacts the second friction plate 1211 of the connecting plate 1212, the output shaft section 13 can be decelerated, thereby achieving a braking effect. When the first friction plate 18 and the second friction plate 1211 need to be replaced, the insert plate 23 is removed from the slide groove 25 by pulling the horizontal plate 22 upward, and the slide rod is movably arranged in the movable groove 1231, so that the connecting plate 1212 can be removed from one side of the main body 1232 and then replaced with a new connecting plate 1212. When installing, align the insert plate 23 with the slide groove 25 and insert it, and then hinge it through the latch.The replacement of the first friction plate 18 is completed, and then the fixing pin 16 set by the threaded movement is rotated to disengage the fixing pin 16 from the strip groove 14, so that the fixing sleeve 15 can be removed from one end of the output shaft section 13. After replacing the new rotating disk 17 and the fixing sleeve 15, the replacement of the second friction plate 1211 can be completed. The housing 11 can protect the internal structure and play a role in isolating the external environment and maintaining the stability of the internal structure. The baffle 1213 can reinforce the firmness of the sliding rod and the connecting plate 1212, so that when the second friction plate 1211 decelerates the first friction plate 18, the structure is more secure to prevent the connecting plate 1212 from detaching from the sliding rod, and the sliding rod moves in the movable groove 1231. The sliding rod and the movable groove 1231 can limit the position of the connecting plate 1212 so that the connecting plate 1212 can only move in the horizontal direction The spring slot 1233 can limit the first spring 1234 so that the position of the first spring 1234 will not be offset. The strip groove 14 can adjust the horizontal and horizontal position of the fixing sleeve 15 through the fixing pin 16, and limit the horizontal and longitudinal position. The horizontal and longitudinal position of the rotating disk 17 will not be offset during the braking process, and will not affect the braking effect. The sliding bar 24 increases the horizontal and longitudinal binding force of the plug plate 23 on the connecting block 26, so that the torsion generated when the first friction plate 18 and the second friction plate 1211 contact is offset, so that the plug plate 23 and the connecting block 26 are not easy to deform. The connecting block 26 and the plug plate 23 are hinged by the latch, and the hinged latch can offset the vertical force, so that the connecting block 26 and the plug plate 23 will not be separated.

[0032] The auxiliary component 3 includes a base 31 and a heat dissipation component 32. The base 31 is fixedly arranged at the bottom of the shell 11. The heat dissipation component 32 is located on one side of the shell 11. The heat dissipation component 32 includes a ventilation hole 320. The ventilation hole 320 is opened on one side of the shell 11. Air enters the shell 11 from the ventilation net 325, passes through the ventilation hole 320, enters the box body 321, and is then discharged from the protective net 322 on one side of the box body 321, thereby completing the air circulation.

[0033] The heat dissipation component 32 includes a box body 321, which is fixedly provided on one side of the shell 11, and a protective net 322 is fixedly provided on the side of the box body 321 away from the shell 11. A fan 323 is arranged in the box body 321, and the fan 323 is fixedly provided at one end of the output shaft segment 13. The heat dissipation component 32 further includes a frame 324, which is fixedly provided on one side of the shell 11, and a ventilation net 325 is fixedly provided on the side of the frame 324 away from the shell 11. When the motor is running, the output shaft segment 13 rotates so that the fan 323 at the end of the output shaft segment 13 rotates, so that the air in the box body 321 is circulated through the rotation of the fan 323, and the air enters from the ventilation net 325 and is discharged through the protective net 322 to complete the air circulation and cool the inside of the motor.

[0034] Working principle: When the power is on, the output shaft section 13 rotates to make the turntable 17 rotate accordingly, and the electromagnetic coil 1235 generates electromagnetic force to make the iron connecting plate 1212 adsorbed on one side of the main body 1232, and the sliding rod slides in the movable groove 1231 to move toward the side of the main body 1232. At this time, the first friction plate 18 and the second friction plate 1211 are not in contact. When the power is off, the electromagnetic coils 1235 on both sides of the turntable 17 are in a power-off state, so that the connecting plate 1212 loses the attraction of the electromagnetic force, and then the connecting plate 1212 is pushed toward the turntable 17 by the force of the first spring 1234. When the first friction plate 18 of the turntable 17 contacts the second friction plate 1211 of the connecting plate 1212, the output shaft section 13 can be decelerated, thereby achieving a braking effect. When the first friction plate 18 and the second friction plate 1211 need to be replaced, the horizontal plate 22 is pulled upwards. The plug plate 23 is taken out from the slide slot 25, and the slide rod is movably arranged in the movable slot 1231, so that the connecting plate 1212 can be removed from one side of the main body 1232 and then replaced with a new connecting plate 1212. During installation, the plug plate 23 is aligned with the slide slot 25 and inserted into it, and then hinged by the latch, so that the replacement of the first friction plate 18 is completed. Then, the fixing pin 16 movably arranged by the thread is rotated to disengage the fixing pin 16 from the strip groove 14, so that the fixing sleeve 15 can be removed from one end of the output shaft section 13. After replacing the new turntable 17 and the fixing sleeve 15, the replacement of the second friction plate 1211 can be completed. When the motor is running, the output shaft section 13 rotates to cause the fan 323 at the end of the output shaft section 13 to rotate accordingly, so that the air in the box body 321 is circulated through the rotation of the fan 323, and the air enters from the ventilation partition net 325 and is discharged through the protective net 322 to complete the air circulation and cool down the inside of the motor.

[0035] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An electromagnetic brake for a three-phase asynchronous motor, comprising a supporting assembly (1), a disassembly assembly (2) and an auxiliary assembly (3), characterized in that: One side of the support component (1) is provided with a disassembly component (2), and the other side of the support component (1) is provided with an auxiliary component (3); The support assembly (1) comprises a housing (11) and a brake assembly (12); an output shaft section (13) is movably arranged in the housing (11) via a bearing; a strip groove (14) is provided on one side of the output shaft section (13); a fixing sleeve (15) is movably arranged on the outer side of the output shaft section (13); a fixing pin (16) is movably arranged at the top end of the fixing sleeve (15) through a thread; the bottom end of the fixing pin (16) is movably arranged on the inner wall of the strip groove (14); a rotating disk (17) is fixedly arranged on one side of the fixing sleeve (15); first friction plates (18) are fixedly arranged on both sides of the rotating disk (17); and a brake assembly (12) is provided on one side of the first friction plate (18).

2. The electromagnetic brake of a three-phase asynchronous motor according to claim 1, characterized in that: The brake assembly (12) comprises a friction assembly (121) and an electromagnetic assembly (123), wherein the electromagnetic assembly (123) is disposed on one side of the friction assembly (121), and the friction assembly (121) comprises a second friction plate (1211), wherein a first friction plate (18) is movably disposed on one side of the second friction plate (1211), and a connecting plate (1212) is fixedly disposed on the other side of the second friction plate (1211), wherein a blocking plate (1213) is fixedly disposed inside the connecting plate (1212), and a sliding rod (1214) is fixedly disposed on one side of the blocking plate (1213).

3. The electromagnetic brake of a three-phase asynchronous motor according to claim 2, characterized in that: The electromagnetic component (123) comprises a movable groove (1231), the sliding rod is movably arranged in the movable groove (1231), the movable groove (1231) is provided on one side of the main body (1232), a spring groove (1233) is provided on one side of the main body (1232), a first spring (1234) is movably arranged in the spring groove (1233), one end of the first spring (1234) is movably arranged on one side of the connecting plate (1212), and an electromagnetic coil (1235) is fixedly arranged inside the main body (1232).

4. The electromagnetic brake of a three-phase asynchronous motor according to claim 3, characterized in that: The disassembly assembly (2) comprises a fixed plate (21), the main body (1232) is fixedly arranged in the fixed plate (21), the top end of the fixed plate (21) is fixedly arranged at the bottom end of the horizontal plate (22), a plug plate (23) is fixedly arranged on one side of the horizontal plate (22), a slide bar (24) is fixedly arranged on one side of the plug plate (23), the slide bar (24) is movably arranged in a slide groove (25), the plug plate (23) is movably arranged in the slide groove (25), the slide groove (25) is opened at the top end of a connecting block (26), and the connecting block (26) is fixedly arranged on one side of the housing (11).

5. The electromagnetic brake of a three-phase asynchronous motor according to claim 4, characterized in that: The auxiliary component (3) comprises a base (31) and a heat dissipation component (32); the base (31) is fixedly arranged at the bottom end of the shell (11); and the heat dissipation component (32) is located on one side of the shell (11).

6. The electromagnetic brake of a three-phase asynchronous motor according to claim 5, characterized in that: The heat dissipation component (32) comprises a ventilation hole (320), and the ventilation hole (320) is opened on one side of the housing (11).

7. The electromagnetic brake of a three-phase asynchronous motor according to claim 6, characterized in that: The heat dissipation assembly (32) further comprises a box body (321), the box body (321) being fixedly arranged on one side of the shell (11), a protective net (322) being fixedly arranged on a side of the box body (321) away from the shell (11), a fan (323) being arranged inside the box body (321), and the fan (323) being fixedly arranged on one end of the output shaft section (13).

8. The electromagnetic brake of a three-phase asynchronous motor according to claim 7, characterized in that: The heat dissipation assembly (32) further comprises a frame (324), wherein the frame (324) is fixedly arranged on one side of the shell (11), and a ventilation screen (325) is fixedly arranged on a side of the frame (324) away from the shell (11).

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