Electromagnetic disc brake with automatic clearance compensation function

Abstract

The invention discloses an electromagnetic disc brake with a gap automatic compensation function, and relates to the technical field of electromagnetic disc brakes, the electromagnetic disc brake comprises a mounting base and a connecting shell, one side of the mounting base is provided with a shell, an electromagnet is mounted in the mounting base, one side of the electromagnet is provided with an armature, and the armature is connected with the shell. One side of the armature is connected with multiple sets of reset springs, and one end of each reset spring is fixed to the inner side of the shell. According to the electromagnetic disc brake with the gap automatic compensation function, the gap between the armature and the electromagnet can be detected through the microswitch, and when the gap exceeds the range, the thin hydraulic cylinder can be started to drive the hydraulic plunger head to push the armature to move, so that the gap between the armature and the electromagnet returns to normal, and compensation is completed; the sealing mechanism can prevent external dust from making contact with the armature and other components, so that the braking effect is kept, and the heat dissipation mechanism can dissipate heat of the braked components.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic disc brake, in particular to an electromagnetic disc brake with automatic gap compensation function. BACKGROUND

[0002] The electromagnetic disc brake for electric hoist is a core safety component of hoisting equipment, and its function is to control the combination and separation of the brake disc through electromagnetic force to realize precise parking, hovering and emergency braking of the electric hoist.

[0003] As disclosed in a kind of electromagnetic brake motor with wear compensation function (CN112087100A), after brake motor is used for a long time, the thickness of brake block on brake disc decreases due to wear. When starting to brake, the brake disc can be abutted to brake block after spring expands longer, then the spring force decreases, and the pressure of brake disc acting on brake disc decreases. At the beginning of braking, the speed of rotating shaft decreases rapidly, and the fan and sleeve will tend to twist in the direction of brake disc under the action of inertia. If the force of sleeve acting on brake disc is greater than the total spring force of spring and elastic element, the sleeve will rotate relative to rotating shaft, and the sleeve pushes brake disc to move in the direction of brake disc. After moving, the fork is inserted into the corresponding tooth groove to limit the rotation of sleeve, so that the movement of brake disc in the direction of brake disc is realized, and the movement can be automatically completed. Next time the motor is started, the brake disc and brake disc are separated, and the rotating shaft starts to rotate. The resistance of fan rotation will not make the sleeve tend to twist in the direction of brake disc, and the brake disc will not spontaneously move in the direction of brake disc under the action of elastic force of elastic element.

[0004] The automatic compensation structure of existing electromagnetic disc brake needs to realize one-way rotation through ratchet and pawl to complete compensation, but the compensation amount of ratchet and pawl is stepwise, and each tooth corresponds to a fixed compensation amount. If the single wear amount of brake block is less than the single tooth compensation amount, the compensation will be triggered after multiple wearings, and the brake gap will continuously increase during this period, resulting in temporary decrease of braking effect. In addition, if the pawl is misengaged due to vibration, it will forcibly push the brake block to excessively approach the brake disc, causing brake jam hazard. The wedge-shaped block compensation method will make the inclined surface of wedge-shaped block smooth due to wear, and the wedge block will slide excessively when releasing the brake, pushing the brake block to be in close contact with the brake disc without gap. There is still friction when releasing the brake, which causes the brake disc to heat, increases energy consumption, and even causes the brake disc to deform. SUMMARY

[0005] The present application aims to provide an electromagnetic disc brake with automatic gap compensation function to solve the problem of inaccurate compensation of the automatic compensation structure of existing electromagnetic disc brake in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electromagnetic disc brake with automatic clearance compensation, comprising a mounting base and a connecting shell, wherein a housing is provided on one side of the mounting base, an electromagnet is mounted inside the mounting base, an armature is provided on one side of the electromagnet, and multiple sets of return springs are connected to one side of the armature, one end of each return spring being fixed to the inner side of the housing; a bearing sleeve is fixedly connected to the interior of the mounting base, a connecting shaft is rotatably connected to the interior of the bearing sleeve, a connecting sleeve is fixed to the outer side of the connecting shaft, a friction plate is slidably connected to the outer side of the connecting sleeve via a slider, a detection mechanism for detecting the position of the armature is provided on one side of the friction plate, a compensation mechanism for compensating the friction amount of the friction plate is provided on the other side of the friction plate, and a rotational anti-friction mechanism is provided on the outer side of the friction plate; a sealing ring is fixedly connected to one side of the housing, and a multi-sealing mechanism is provided on one side of the sealing ring for sealing the connection between the mounting base and the housing; a gear ring is fixedly connected to one end of the connecting shaft, and a heat dissipation mechanism is provided on the outer side of the gear ring for dissipating the internal temperature of the housing.

[0007] Furthermore, the detection mechanism includes a micro switch arranged on one side of the armature, one side of the micro switch is fixed to the inside of the shell, the end of the micro switch close to the armature is connected to a spring b, one end of the spring b is abutted against a buffer block, one end of the buffer block is rollingly connected to a ball, the end of the buffer block close to the spring b is fixed with a rubber block, and the outer side of the rubber block is slidingly connected to the end of the micro switch, the micro switch, spring b and buffer block constitute an elastic telescopic structure.

[0008] Furthermore, the compensation mechanism includes a thin hydraulic cylinder installed on one side of the mounting base, and one side of the thin hydraulic cylinder is connected to a hydraulic plunger head.

[0009] Furthermore, the rotational anti-friction mechanism includes multiple groups of rotating shafts that are rollingly connected to the outside of the friction plate, a group of connecting shells are provided on one side of the rotating shaft, and one side of the connecting shell is fixed to the hydraulic plunger head, the interior of the connecting shell is slidingly connected with a guide block, and one side of the guide block is wedge-shaped, one side of the guide block is fixedly connected with a spring a, one end of the spring a is fixed to the connecting shell, a sliding groove matching the guide block is provided inside the connecting shell, the guide block and the connecting shell constitute a sliding structure, the rotating shaft, connecting shell, guide block and spring a are each provided in two groups, and are distributed at equal angles of 180° with respect to the central axis of the friction plate.

[0010] Further, the multiple sealing mechanism comprises a compressed air bag abutting one side of the sealing ring, one side of the compressed air bag is fixed with the thin hydraulic cylinder, one side of the compressed air bag is connected with a gas conveying pipe, the gas conveying pipe is in T-shaped in shape, one end of the gas conveying pipe is connected with a sealing air bag a, the other end of the gas conveying pipe is connected with a sealing air bag b, and the shell is provided with sealing grooves matched with the sealing air bag a and the sealing air bag b on the side close to the thin hydraulic cylinder.

[0011] Further, the compressed air bag, the sealing air bag a and the sealing air bag b are all ring-shaped in shape, one side of the cross section of the sealing ring is trapezoidal, and the other side is rectangular, and the outer side of the shell is provided with a limiting mechanism for fixing the mounting base and the shell.

[0012] Further, the limiting mechanism comprises a threaded ring connected with the shell through screw threads, one side of the threaded ring is conical, the conical surface of the threaded ring abuts against a moving block, two sides of the moving block are wedge-shaped, one side of the wedge-shaped surface of the moving block abuts against a fixed block a, one side of the fixed block a is fixed with the mounting base, the other side of the moving block is connected with a fixed block b in sliding mode, the fixed block b is fixedly connected with a slide rod in the inside, the slide rod is sleeved with a tension spring on the outside, one end of the tension spring is fixed with the moving block, the other end of the tension spring is fixed with the inside of the fixed block b, one end of the fixed block b is fixed with the outside of the shell, and the moving block and the slide rod form a sliding structure.

[0013] Further, the heat dissipation mechanism comprises a gear body engaged with the gear ring on the outside, one side of the gear body is fixedly connected with a connecting rod, one end of the connecting rod is connected with a fan blade through a one-way bearing, one side of the fan blade is rotatably connected with the shell through a rotating shaft, one side of the shell is provided with a heat dissipation groove corresponding to the fan blade, and one side of the heat dissipation groove is wedge-shaped, and one side of the shell is provided with a plugging mechanism for plugging the heat dissipation groove, and the gear ring and the gear body form an engagement transmission structure.

[0014] Further, the plugging mechanism comprises two groups of electric push rods fixedly connected with the shell on one side, and one end of each of the two groups of electric push rods is fixedly connected with a plugging block, one side of the plugging block is fixedly provided with a rubber pad, and one side of the plugging block is wedge-shaped.

[0015] Compared with the prior art, the electromagnetic disc brake with automatic gap compensation function can detect the gap between the armature and the electromagnet through the micro switch, when the gap exceeds the range, the thin hydraulic cylinder can be started to drive the hydraulic plunger head to push the armature to move, so that the gap between the armature and the electromagnet is restored to normal, thereby completing compensation, the sealing mechanism can prevent external dust from contacting the armature and other components, thereby maintaining the braking effect, and the heat dissipation mechanism can dissipate heat from the components after braking.

[0016] 1. The gap of the brake can be detected by the micro switch, if the gap is out of range, the signal is sent to the controller, the thin hydraulic cylinder is started by the controller, the friction plate and the armature on one side are pushed to move, the armature contacts the micro switch again, the wear of the friction plate is compensated, and the rotation of the anti-friction mechanism can prevent the friction between the friction plate and the hydraulic plunger head after the brake is cancelled.

[0017] 2. When the sealing ring contacts the thin hydraulic cylinder, the connection between the mounting base and the shell is sealed once, and the sealing ring expands the sealing air bag a and the sealing air bag b when the air bag is pressed, and contacts and fits with the two groups of sealing grooves on one side of the shell, so that the secondary sealing of the connection between the mounting base and the shell is completed.

[0018] 3. When the connecting shaft rotates, the gear ring and the plurality of gear bodies are engaged, the gear body rotates in the positive direction to drive the connecting rod and the fan blade on one side to rotate, and the fan blade rotates in the positive direction to send the airflow in the shell to the outside, so as to dissipate heat. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present application; Figure 2 It is a three-dimensional sectional view of the structure of the present application; Figure 3 It is a schematic diagram of the mounting base structure of the present application; Figure 4 It is a three-dimensional sectional view of the shell structure of the present application; Figure 5 It is an enlarged structure schematic diagram of A of the present application; Figure 2 It is an enlarged structure schematic diagram of B of the present application; Figure 6 Figure 3 Figure 7 It is a three-dimensional structure schematic diagram of the micro switch of the present application; Figure 8 It is a three-dimensional sectional view of the connecting shell structure of the present application; Figure 9 It is a three-dimensional schematic diagram of the structure of the fan blade of the present application; Figure 10 It is a three-dimensional structure schematic diagram of the mounting base of the present application.

[0020] ​​In the figure: 1, mounting base; 2, shell; 3, electromagnet; 4, armature; 5, connecting shaft; 6, connecting sleeve; 7, friction plate; 8, rotating shaft; 9, connecting shell; 10, guide block; 11, spring a; 12, micro switch; 13, spring b; 14, buffer block; 15, return spring; 16, sealing ring; 17, pressure receiving air bag; 18, gas delivery pipe; 19, sealing air bag a; 20, sealing air bag b; 21, threaded ring; 22, moving block; 23, fixed block a; 24, slide rod; 25, fixed block b; 26, tension spring; 27, gear ring; 28, gear body; 29, connecting rod; 30, fan blade; 31, electric push rod; 32, blocking block; 33, bearing sleeve; 34, thin hydraulic cylinder; 35, hydraulic ram head. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] Embodiment one: please refer to Figures 1-4 The present application provides the following technical solutions: a magnetic disc brake with automatic gap compensation function, comprising a mounting base 1 and a connecting shell 9, one side of the mounting base 1 is provided with a shell 2, and the inside of the mounting base 1 is provided with an electromagnet 3, one side of the electromagnet 3 is provided with an armature 4, one side of the armature 4 is connected with a plurality of return springs 15, one end of the return spring 15 is fixed to the inside of the shell 2; the inside of the mounting base 1 is fixedly connected with a bearing sleeve 33, the inside of the bearing sleeve 33 is rotatably connected with a connecting shaft 5, the outside of the connecting shaft 5 is fixedly connected with a connecting sleeve 6, the outside of the connecting sleeve 6 is slidably connected with a friction plate 7 through a sliding block, one side of the friction plate 7 is provided with a detection mechanism for detecting the position of the armature 4, the other side of the friction plate 7 is provided with a compensation mechanism for compensating the friction amount of the friction plate 7, and the outside of the friction plate 7 is provided with a rotating anti-friction mechanism; when braking, the electromagnet 3 is powered off, at this time the armature 4 will not be attracted by the electromagnet 3, the return spring 15 can push the armature 4 to move, so that the armature 4 contacts the friction plate 7 and pushes the friction plate 7 to contact the hydraulic ram head 35 on one side of the thin hydraulic cylinder 34, double braking is performed, at this time the friction plate 7 will not rotate, the connecting shaft 5 connected with the friction plate 7 will also not rotate, and the braking of the connecting shaft 5 can be completed.

[0023] Please refer to Figure 2 , Figure 4 and Figure 7The detection mechanism comprises a micro switch 12 arranged on one side of the armature 4, one side of the micro switch 12 is fixed with the inside of the shell 2, one end of the micro switch 12 is connected with a spring b13, one end of the spring b13 abuts against a buffer block 14, one end of the buffer block 14 is rolling connected with a ball, one end of the buffer block 14 close to the spring b13 is fixed with a rubber block, and the outside of the rubber block is sliding connected with the end of the micro switch 12, the micro switch 12, the spring b13 and the buffer block 14 form an elastic telescopic structure; when the friction plate 7 is worn, the return spring 15 needs to push the armature 4 to move a farther distance to make the friction plate 7 contact with the hydraulic plunger head 35, therefore, the gap between the armature 4 and the electromagnet 3 will be larger, and the armature 4 will be separated from the contact with the micro switch 12, the micro switch 12 will detect that the gap of the brake has exceeded the range, thereby sending a signal to the controller, and the thin hydraulic cylinder 34 is started through the controller, in order to prevent the vibration generated when the armature 4 rubs with the friction plate 7 from being transmitted to the micro switch 12, causing damage to the micro switch 12, a set of buffer blocks 14 are arranged at the end of the micro switch 12, the buffer blocks 14 will transmit the vibration to the spring b13 after being vibrated, the vibration is absorbed through the contraction of the spring b13, and since the buffer blocks 14 slide at the end of the micro switch 12 through the rubber block, the rubber block will generate damping when contacting with the end of the micro switch 12, thereby preventing the spring b13 from continuously contracting, so that the influence of the vibration on the micro switch 12 can be reduced.

[0024] Please refer to Figure 2 , Figure 5 and Figure 10 The compensation mechanism comprises a thin hydraulic cylinder 34 installed on one side of the installation base 1, one side of the thin hydraulic cylinder 34 is connected with a hydraulic plunger head 35; the thin hydraulic cylinder 34 pushes the hydraulic plunger head 35 on one side to move, so that the hydraulic plunger head 35 pushes the friction plate 7 to move, since the friction plate 7 is sliding connected with the connecting sleeve 6 outside the connecting shaft 5 through the sliding block, the friction plate 7 will move, the friction plate 7 pushes the armature 4 on one side to move, when the armature 4 contacts with the micro switch 12 again, the thin hydraulic cylinder 34 stops moving, thereby completing the automatic compensation of the gap of the electromagnetic disc brake.

[0025] Please refer to Figure 2 , Figure 5 and Figure 8The rotating anti-friction mechanism comprises a plurality of rotating shafts 8 connected with the outer side of the friction plate 7 in a rolling manner, one side of the rotating shaft 8 is provided with a set of connecting shells 9, one side of the connecting shell 9 is fixed with the hydraulic plunger head 35, the inner part of the connecting shell 9 is slidingly connected with a guide block 10, one side of the guide block 10 is wedge-shaped, the guide block 10 is fixedly connected with a spring a11 on one side, one end of the spring a11 is fixed with the connecting shell 9, the inner part of the connecting shell 9 is provided with a sliding groove matched with the guide block 10, the guide block 10 and the connecting shell 9 form a sliding structure, the rotating shaft 8, the connecting shell 9 and the guide block 10 are provided with two sets of the spring a11, and are distributed at an angle of 180° with respect to the center axis of the friction plate 7; when the brake is cancelled, the electromagnet 3 is energized, the electromagnet 3 will attract the armature 4 to move, so that the armature 4 extrudes the reset spring 15 on one side and moves away from the extrusion of the friction plate 7, so that the friction plate 7 and the connecting shaft 5 can rotate at this time, the friction plate 7 can be in contact with the inclined surface of the guide block 10 on one side of the connecting shell 9 through the outer rotating shaft 8 when rotating, the inclined surface of the guide block 10 can push the rotating shaft 8 and the friction plate 7 to move, so that the friction plate 7 moves away from the contact with the hydraulic plunger head 35, preventing the friction plate 7 from being worn by the hydraulic plunger head 35 when rotating, if the armature 4 pushes the friction plate 7 to brake, the rotating shaft 8 is just rotated to one side of the guide block 10, which will push the guide block 10 to move, so that the guide block 10 shrinks the spring a11 on one side.

[0026] Thus, the electromagnetic disc brake can be precisely compensated through the above operation. Embodiment two:

[0027] Please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6On the basis of the first embodiment, the sealing structure of the connection between the mounting base 1 and the shell 2 is also disclosed, and the specific structure is as follows: the sealing ring 16 is fixedly connected to one side of the shell 2, and one side of the sealing ring 16 is provided with a plurality of sealing mechanisms for sealing the connection between the mounting base 1 and the shell 2, the plurality of sealing mechanisms including a pressure gas bag 17 abutting one side of the sealing ring 16, one side of the pressure gas bag 17 being fixed with a thin hydraulic cylinder 34, one side of the pressure gas bag 17 being connected with a gas conveying pipe 18, the gas conveying pipe 18 being in the shape of T, one end of the gas conveying pipe 18 being connected with a sealing gas bag a 19, the other end of the gas conveying pipe 18 being connected with a sealing gas bag b 20, one side of the shell 2 close to the thin hydraulic cylinder 34 being provided with a sealing groove matched with the sealing gas bag a 19 and the sealing gas bag b 20; the pressure gas bag 17, the sealing gas bag a 19 and the sealing gas bag b 20 are all in the shape of ring, one side of the cross section of the sealing ring 16 is in the shape of trapezoid, and the other side is in the shape of rectangle, the outer side of the shell 2 being provided with a limiting mechanism for fixing the mounting base 1 and the shell 2; when the connection between the mounting base 1 and the shell 2 is sealed, the mounting base 1 and the shell 2 are butted, when the tapered surfaces on both sides of the sealing ring 16 contact the tapered surface on one side of the thin hydraulic cylinder 34, the two sides will seal the connection between the mounting base 1 and the shell 2 once, when the sealing ring 16 extrudes the pressure gas bag 17, the gas in the pressure gas bag 17 will enter the sealing gas bag a 19 and the sealing gas bag b 20 through the gas conveying pipe 18, so that the two groups of gas bags expand and contact and fit with the two groups of sealing grooves on one side of the shell 2, so as to complete the secondary sealing of the connection between the mounting base 1 and the shell 2, so that the three times of sealing can prevent the external dust from entering the shell 2, the friction plate 7, the armature 4 and the hydraulic plunger head 35 can be kept clean, so that the micro switch 12 will not be disturbed when detecting the gap, and the braking effect of the brake is ensured.

[0028] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6The limiting mechanism comprises a threaded ring 21 connected to the outer side of the shell 2 by screwing, the threaded ring 21 is tapered on one side, the tapered surface of the threaded ring 21 abuts against a moving block 22, the moving block 22 is wedge-shaped on both sides, one side of the wedge-shaped surface of the moving block 22 abuts against a fixed block a 23, one side of the fixed block a 23 is fixed to the mounting base 1, the other side of the moving block 22 is slidingly connected to a fixed block b 25, the fixed block b 25 is fixedly connected to a sliding rod 24 inside, the sliding rod 24 is sleeved with a tension spring 26 on the outer side, one end of the tension spring 26 is fixed to the moving block 22, the other end of the tension spring 26 is fixed to the inner side of the fixed block b 25, one end of the fixed block b 25 is fixed to the outer side of the shell 2, and the moving block 22 and the sliding rod 24 form a sliding structure; in order to quickly fix the mounting base 1 and the shell 2 and compress the sealing structure at the connection between the two, the threaded ring 21 is screwed with the shell 2 to drive the threaded ring 21 to move, when the threaded ring 21 moves, the tapered surface on one side pushes the moving blocks 22 to move, the moving blocks 22 move in the fixed block b 25 and stretch the tension spring 26, when the moving blocks 22 move, the wedge-shaped surface on the other side extrudes the inclined slot in the fixed block a 23, thereby driving the shell 2 to be tightly attached to the mounting base 1 and the thin hydraulic cylinder 34 as a whole, and the connection and fixation of the mounting base 1 and the shell 2 are completed.

[0029] Thus, the connection between the mounting base 1 and the shell 2 can be sealed multiple times through the above operation. Example Three

[0030] Please refer to Figure 1 , Figure 4 and Figure 9On the basis of the embodiment two, the heat dissipation structure inside the shell 2 is further disclosed, and the specific structure is as follows: the gear ring 27 is fixedly connected at one end of the connecting shaft 5, and the outer side of the gear ring 27 is provided with a heat dissipation mechanism for discharging the internal temperature of the shell 2, the heat dissipation mechanism comprises the gear body 28 meshingly connected at the outer side of the gear ring 27, one side of the gear body 28 is fixedly connected with the connecting rod 29, one end of the connecting rod 29 is connected with the fan blade 30 through a one-way bearing, one side of the fan blade 30 is rotatably connected with the shell 2 through a rotating shaft, one side of the shell 2 is provided with a heat dissipation groove corresponding to the fan blade 30, and one side of the heat dissipation groove is wedge-shaped, one side of the shell 2 is provided with a plugging mechanism for plugging the heat dissipation groove, and the gear ring 27 and the gear body 28 form a meshing transmission structure; the electromagnetic disc brake with the gap automatic compensation function, when the internal heat is dissipated, a group of gear rings 27 are arranged at the end of the connecting shaft 5, the connecting shaft 5 drives the gear ring 27 to mesh with a plurality of gear bodies 28, thereby driving a plurality of gear bodies 28 to rotate, when the gear body 28 rotates, the connecting rod 29 at one side also rotates, since the connecting rod 29 is connected with the fan blade 30 through a one-way bearing, the fan blade 30 only rotates when the connecting rod 29 rotates in the positive direction, when the fan blade 30 rotates in the positive direction, the internal airflow is discharged out of the shell 2, thereby dissipating heat.

[0031] Please refer to Figure 1 and Figure 4 The plugging mechanism comprises two groups of electric push rods 31 fixedly connected at one side of the shell 2, and one end of each of the two groups of electric push rods 31 is fixedly connected with a plugging block 32, one side of the plugging block 32 is fixedly connected with a rubber pad, and one side of the plugging block 32 is wedge-shaped; when heat dissipation is needed, the electric push rod 31 is started to drive the plugging block 32 to move, so that the wedge-shaped surface of the plugging block 32 is separated from the plugging of the heat dissipation groove, at this time, the airflow in the shell 2 can be discharged, the electric push rod 31 can push the plugging block 32 to move after the friction plate 7 is braked, after heat dissipation is completed, the electric push rod 31 can be started to drive the plugging block 32 to reset, when the wedge-shaped plugging block 32 and the rubber block contact with the wedge-shaped surface at one side of the heat dissipation groove, the tight fit can be completed, thereby sealing the heat dissipation groove.

[0032] Thus, through the above operation, the friction plate 7 after braking can be cooled.

[0033] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0034] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Electromagnetic disc brake with gap automatic compensation function, comprising a mounting base (1) and a connecting shell (9), one side of the mounting base (1) is provided with a shell (2), the inside of the mounting base (1) is provided with an electromagnet (3), one side of the electromagnet (3) is provided with an armature (4), one side of the armature (4) is connected with a plurality of reset springs (15), one end of the reset spring (15) is fixed with the inside of the shell (2); characterized in that The inside of the mounting base (1) is fixedly connected with a bearing sleeve (33), the inside of the bearing sleeve (33) is rotatably connected with a connecting shaft (5), the outer side of the connecting shaft (5) is fixedly connected with a connecting sleeve (6), the outer side of the connecting sleeve (6) is slidably connected with a friction plate (7), one side of the friction plate (7) is provided with a detection mechanism for detecting the position of the armature (4), the other side of the friction plate (7) is provided with a compensation mechanism for compensating the friction amount of the friction plate (7), the outer side of the friction plate (7) is provided with a rotating anti-friction mechanism; The sealing ring (16) is fixedly connected on one side of the shell (2), and the sealing ring (16) is provided with a plurality of sealing mechanisms for sealing the connection between the mounting base (1) and the shell (2); The gear ring (27) is fixedly connected on one end of the connecting shaft (5), and the outer side of the gear ring (27) is provided with a heat dissipation mechanism for discharging the temperature inside the shell (2).

2. The electromagnetic disc brake with automatic gap compensation function according to claim 1, characterized in that: The detection mechanism comprises a micro switch (12) arranged on one side of the armature (4), one side of the micro switch (12) is fixed with the inside of the shell (2), one end of the micro switch (12) near the armature (4) is connected with a spring b (13), one end of the spring b (13) is abutted with a buffer block (14), one end of the buffer block (14) is rotatably connected with a ball, one end of the buffer block (14) near the spring b (13) is fixedly connected with a rubber block, and the outer side of the rubber block is slidably connected with the end of the micro switch (12), the micro switch (12), the spring b (13) and the buffer block (14) constitute an elastic expansion structure.

3. The electromagnetic disc brake with automatic gap compensation function according to claim 1, characterized in that: The compensation mechanism comprises a thin hydraulic cylinder (34) installed on one side of the mounting base (1), one side of the thin hydraulic cylinder (34) is connected with a hydraulic plunger head (35).

4. The electromagnetic disc brake with automatic clearance compensation function according to claim 1, characterized in that: The rotation anti-friction mechanism comprises a plurality of rotating shafts (8) rollingly connected to the outer side of the friction plate (7), a group of connecting shells (9) are provided on one side of the rotating shaft (8), and one side of the connecting shell (9) is fixed to the hydraulic plunger head (35), the interior of the connecting shell (9) is slidably connected to a guide block (10), and one side of the guide block (10) is wedge-shaped, and one side of the guide block (10) is fixedly connected to a spring a (11), one end of the spring a (11) is fixed to the connecting shell (9), a sliding groove matching the guide block (10) is provided inside the connecting shell (9), and the guide block (10) and the connecting shell (9) form a sliding structure, and the rotating shaft (8), the connecting shell (9), the guide block (10) and the spring a (11) are each provided in two groups, and are distributed at equal angles of 180° with respect to the central axis of the friction plate (7).

5. The electromagnetic disk brake with automatic gap compensation function according to claim 1, characterized in that: The multiple sealing mechanism includes a pressurized airbag (17) abutting against one side of a sealing ring (16), one side of the pressurized airbag (17) is fixed to a thin hydraulic cylinder (34), one side of the pressurized airbag (17) is connected to an air supply pipe (18), the air supply pipe (18) has a T-shaped shape, one end of the air supply pipe (18) is connected to a sealing airbag a (19), and the other end of the air supply pipe (18) is connected to a sealing airbag b (20), and a sealing groove matching the sealing airbag a (19) and the sealing airbag b (20) is opened on the side of the housing (2) close to the thin hydraulic cylinder (34).

6. The electromagnetic disc brake with automatic gap compensation function according to claim 5, characterized in that: The pressure airbag (17), the sealing airbag a (19) and the sealing airbag b (20) are all annular in shape. The cross section of the sealing ring (16) is trapezoidal on one side and rectangular on the other side. A limiting mechanism for fixing the mounting base (1) and the housing (2) is provided on the outer side of the housing (2).

7. The electromagnetic disc brake with automatic gap compensation according to claim 6, characterized in that: The limiting mechanism includes a threaded ring (21) connected to the outer side of the shell (2), one side of the threaded ring (21) is conical, and the conical surface of the threaded ring (21) abuts against a moving block (22), both sides of the moving block (22) are wedge-shaped, and one side of the wedge surface abuts against a fixed block a (23), one side of the fixed block a (23) is fixed to the mounting base (1), and the other side of the moving block (22) is slidably connected to a fixed block b (25), the interior of the fixed block b (25) is fixedly connected to a sliding rod (24), the outer side of the sliding rod (24) is sleeved with a tension spring (26), one end of the tension spring (26) is fixed to the moving block (22), and the other end of the tension spring (26) is fixed to the inner side of the fixed block b (25), one end of the fixed block b (25) is fixed to the outer side of the shell (2), and the moving block (22) and the sliding rod (24) form a sliding structure.

8. The electromagnetic disc brake with automatic gap compensation function according to claim 1, characterized in that: The heat dissipation mechanism comprises a gear body (28) engaged with the outside of a gear ring (27), one side of the gear body (28) is fixedly connected with a connecting rod (29), one end of the connecting rod (29) is connected with a fan blade (30) through a one-way bearing, one side of the fan blade (30) is rotatably connected with the shell (2) through a rotating shaft, one side of the shell (2) is provided with a heat dissipation groove corresponding to the fan blade (30), and one side of the heat dissipation groove is wedge-shaped, one side of the shell (2) is provided with a plugging mechanism for plugging the heat dissipation groove, and the gear ring (27) and the gear body (28) constitute an engagement transmission structure.

9. The electromagnetic disc brake with automatic gap compensation according to claim 8, characterized in that: The plugging mechanism comprises two groups of electric push rods (31) fixedly connected with one side of the shell (2), and one end of each of the two groups of electric push rods (31) is fixedly connected with a plugging block (32), one side of the plugging block (32) is fixedly connected with a rubber pad, and one side of the plugging block (32) is wedge-shaped.

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