An electromagnetic brake motor with adjustable equalization brake gap

Abstract

The utility model discloses an electromagnetic brake motor of adjustable equal division brake gap, including rotor subassembly and brake assembly, and rotor subassembly has rotatable limit installation in motor shell's motor shaft, brake assembly includes the cover plate, friction subassembly, armature, brake coil and magnetic yoke that set gradually, and reset spring and brake spring, reset spring is embedded between friction subassembly and motor shaft, and the resilience of reset spring can make friction subassembly move to the side of approaching armature, magnetic yoke and cover plate are installed with the fixed distance apart, and armature sets up between magnetic yoke and friction subassembly and can axially move, brake coil sets up in the ring groove of magnetic yoke and is located between magnetic yoke and armature, and through brake coil on-off electricity makes armature and friction subassembly approach or away from magnetic yoke, and through the first limiting portion and second limiting portion of motor shaft tail portion to the limiting of friction subassembly makes friction subassembly be in the appropriate position, the utility model discloses can effectively solve the problem of burning friction ring piece of prior art, and improve the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of brake motor technology, specifically, to an adjustable electromagnetic brake motor with evenly spaced brake gaps. Background Technology

[0002] The working principle of the electromagnetic brake motor is as follows: after power is cut off, the attraction disappears, the brake spring returns to its original position, and pushes the armature, which can only move axially, into contact with the cover plate. The brake spring force is transmitted to the contact surface of the friction rings. The friction rings on the friction assembly contact the armature and the cover plate to generate braking friction. Combined with the braking radius of the friction assembly, this generates braking torque. The friction assembly of the brake achieves braking by transmitting the braking torque through a spline sleeve and key connection. The friction assembly of the brake is not axially limited within the air gap range. When the brake coil is energized, the generated electromagnetic attraction attracts the armature and compresses the brake spring. The armature contacts the magnetic yoke's attraction surface, and a gap is created between the armature and the friction rings on the friction assembly. The friction assembly is not subjected to spring force axially and can rotate with the motor rotor, thus releasing the brake.

[0003] The friction assembly of the existing electromagnetic brake motor cannot automatically center itself. This results in insufficient clearance between the friction rings, armature, and cover plate after the brake is released. When the motor rotor rotates, causing the friction assembly to shift axially, the friction rings rub against the armature or cover plate. The high temperature generated by this friction damages the friction assembly and other components, leading to product failure. Even with a step between the brake disc and the limit cover that springs push the friction assembly axially back onto the motor shaft, theoretically ensuring even distribution of the brake clearance across all axial dimensions, the axial movement distance is not adjustable and tolerances accumulate, resulting in low yield and low production efficiency during mass production. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an adjustable electromagnetic brake motor with an evenly spaced brake gap, which ensures that the gap between the friction ring and the armature and the cover plate is sufficient, prevents the friction assembly from axially shifting, and allows the friction assembly to be located in the center position between the armature and the cover plate with high precision.

[0005] The present invention solves the above problems through the following technical solution:

[0006] An adjustable electromagnetic brake motor with evenly spaced brake gap includes a rotor assembly and a brake assembly. The rotor assembly has a rotatable motor shaft mounted within a motor housing. The tail of the motor shaft has a first limiting part and a second limiting part to limit the mounting of a friction assembly with a certain axial displacement through the first and second limiting parts, and the motor shaft drives the friction assembly to rotate together. The brake assembly includes a cover plate, a friction assembly, an armature, a brake coil, and a magnetic yoke arranged sequentially, as well as a return spring with a left-end limiting sleeve on the tail of the motor shaft and brake springs with their two ends respectively abutting against the armature and the magnetic yoke. The cover plate is fixedly mounted on the rear end cover of the motor. The friction assembly abuts against the right end of the return spring, and the return force of the return spring can move the friction assembly closer to the armature. The magnetic yoke is installed at a fixed distance from the cover plate. The armature is axially movable between the magnetic yoke and the friction assembly. The brake coil is located in the annular groove of the magnetic yoke and between the magnetic yoke and the armature. The armature moves closer to or away from the magnetic yoke by switching the brake coil on and off.

[0007] When the brake coil is energized and generates an attractive force to draw the armature close to the magnetic yoke, the right side of the friction assembly is limited by the second limiting part, so that the friction surfaces on the left and right sides of the friction assembly have equally spaced gaps with the cover plate and the armature, respectively. When the brake coil is de-energized and the attractive force is eliminated, the elastic force of the brake spring causes the armature to move away from the magnetic yoke, pushing the armature to press the friction assembly against the cover plate, so that the friction surfaces on the left and right sides of the friction assembly generate braking torque, thereby achieving braking.

[0008] As a further improvement, the tail of the motor shaft is sequentially formed with a third positioning step, an external spline structure, and a first external thread, which are used to install a return spring, a friction assembly, and a limiting nut, respectively. The friction assembly has an internal spline structure that mates with the external spline structure, so that the friction assembly can rotate with the motor shaft and can be axially displaced relative to the motor shaft. The limiting nut forms the second limiting part, and the third positioning step forms the first limiting part on the side away from the limiting nut.

[0009] As a further improvement, the limiting nuts are provided in no fewer than two, so as to form an interlock to prevent loosening, and the threaded mating surfaces of the limiting nuts are coated with thread-locking adhesive to further ensure that they do not loosen.

[0010] As a further improvement, the magnetic yoke, armature and cover plate are all provided with circular through holes, and the through holes of the magnetic yoke are fitted with plugs.

[0011] As a further improvement, the friction assembly includes a brake disc and friction rings disposed on the left and right sides of the brake disc.

[0012] As a further improvement, both the cover plate and the magnetic yoke are provided with R-grooves that are respectively connected to the rubber sealing sleeves, so as to provide a waterproof and dustproof seal between the cover plate and the magnetic yoke through the rubber sealing sleeves.

[0013] As a further improvement, the magnetic yoke is connected to the cover plate through the hollow positioning sleeve via the first connecting bolt, and there is a gap between the armature and the positioning sleeve, allowing the armature to slide along the axial direction of the positioning sleeve.

[0014] As a further improvement, the magnetic yoke is connected to the armature by a second connecting bolt, and the bolt heads of several second connecting bolts are set higher than the outer surface of the magnetic yoke and have a gap between them; when manual release is required, the armature is pulled to stick to the magnetic yoke by tightening the second connecting bolts; the cover plate is connected to the rear end cover of the motor by a third connecting bolt.

[0015] As a further improvement, the magnetic yoke has a number of brake spring mounting holes evenly distributed on the side facing the armature, so that one end of the brake spring is limited and installed in the brake spring mounting hole, and the other end abuts against the armature, providing the armature to press the friction assembly against the cover plate to generate braking pressure.

[0016] As a further improvement, a first positioning boss and a second positioning boss are provided on the outside of the motor shaft. Rolling bearings are respectively installed in the front end cover and rear end cover of the motor housing. The rolling bearings are sleeved on both ends of the motor shaft and cooperate with the first positioning boss and the second positioning boss of the motor shaft respectively, so as to axially limit the motor shaft.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] (1) This utility model can effectively solve the problem of burning friction rings in the prior art. By adjusting the limiting nut on the motor shaft, the gap between the friction surface of the friction ring and the armature and cover plate can be evenly distributed. There is enough gap to prevent the friction ring from being scratched or even burned when the friction assembly rotates. The two limiting nuts on the motor shaft can be tightened together and there is thread glue on the threaded joint surface to ensure that it does not loosen. The outer ring has a sealing ring and a plug to prevent water and debris from entering the friction assembly area.

[0019] (2) The braking component of this utility model is external and installed in a detachable manner. The limit nut can be adjusted directly by opening the seal, so as to achieve real-time adjustment and easy replacement, thereby improving efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an adjustable electromagnetic brake motor with equally spaced brake gap according to the present invention.

[0021] Figure 2 This is a front view of an adjustable, evenly spaced brake gap electromagnetic brake motor according to the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of an adjustable, evenly spaced brake gap electromagnetic brake motor according to the present invention.

[0023] Figure 4 This is a cross-sectional schematic diagram of the braking component of this utility model.

[0024] Figure label:

[0025] 1. Motor housing; 2. Rotor assembly; 20. Friction assembly; 21. Motor shaft; 211. First positioning boss; 212. Second positioning boss; 213. External spline structure; 214. First external thread; 215. Third positioning step; 3. Braking assembly; 31. Magnetic yoke; 311. Annular protrusion; 312. Brake spring; 32. Armature; 33. Brake disc; 34. Brake coil; 331. Friction ring; 332. Internal spline structure; 333. Return spring; 4. Cover plate; 5. Seal; 6. Limit nut; 7. Motor rear end cover; 8. Junction box; 81. Waterproof connector; 9. Rolling bearing; 10. Encoder connector; 11. Heat sink fins; 12. Motor front end cover; 13. Rubber sealing sleeve; 14. Encoder; 15. Positioning sleeve; 16. First connecting bolt; 17. Second connecting bolt; 18. Third connecting bolt. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Combined with appendix Figure 1-4 As shown, an adjustable electromagnetic brake motor with equally spaced brake gap includes a rotor assembly and a brake assembly; the rotor assembly has a rotatable motor shaft installed in the motor housing; the tail of the motor shaft 21 has a first limiting part and a second limiting part, which limit the installation of the friction assembly 20 by means of a certain axial displacement through the first limiting part and the second limiting part, and the motor shaft 21 drives the friction assembly 20 to rotate together.

[0029] The braking assembly includes a cover plate 4, a friction assembly 20, an armature 32, a brake coil 34, and a magnetic yoke 31 arranged sequentially, as well as a return spring 333 with its left end limited and sleeved at the tail of the motor shaft, and brake springs 312 with their two ends abutting against the armature and the magnetic yoke respectively. The cover plate 4 is fixedly installed on the rear end cover 7 of the motor. The friction assembly has a cover plate 4 installed at the end of the motor housing 1 on one side, and an armature, brake spring, brake coil, and magnetic yoke on the other side. The return spring 333 is embedded between the friction assembly and the motor shaft. The friction assembly abuts against the right end of the return spring. The return force of the return spring 333 can make the friction assembly move closer to the armature, i.e., to the right. The magnetic yoke 31 is installed at a fixed distance from the cover plate 4. The armature 32 is axially movable between the magnetic yoke 31 and the cover plate 4. The brake coil 34 is located between the magnetic yoke 31 and the armature 32. The armature 32 moves closer to or away from the magnetic yoke 31 by switching the brake coil 34 on and off.

[0030] When the brake coil is energized, it generates an attractive force that draws the armature to compress the brake spring and brings it close to the magnetic yoke. The friction assembly is then moved axially towards the armature by the spring force of the return spring, stopping at the second limit position. This causes the right side of the friction assembly to be limited by the second limit part, and ensures that the friction surfaces on both sides of the friction assembly have evenly spaced gaps with the cover plate and the armature, respectively. When the brake coil is de-energized and the attractive force is eliminated, the spring force of the brake spring causes the armature to move away from the magnetic yoke, pushing the armature to press the friction assembly against the cover plate. This generates braking torque on the friction surfaces on both sides of the friction assembly, thus achieving braking.

[0031] Furthermore, a third positioning step, an external spline structure 213, and a first external thread 214 are sequentially formed on the outer side of the tail of the motor shaft 21, which are used to install the reset spring 333, the friction assembly, and the limiting nut 6, respectively. An internal spline structure 332 that cooperates with the external spline structure 213 is formed in the friction assembly, so that the friction assembly can rotate with the motor shaft 21 and can be axially displaced relative to the motor shaft 21. The limiting nut 6 forms the second limiting part, and the third positioning step forms the first limiting part on the side away from the limiting nut 6.

[0032] The magnetic yoke 31 of the braking assembly 3 is connected to the cover plate 4 via a first connecting bolt 16 passing through a hollow positioning sleeve 15. There is a gap between the armature 32 and the positioning sleeve 15, allowing the armature 32 to slide axially along the positioning sleeve 15. A positioning sleeve 15 is provided between the armature 32 and the cover plate 4, with its two ends abutting against the cover plate 4 and the magnetic yoke 31 respectively. The first connecting bolt 16 passes sequentially through the magnetic yoke 31, the armature 32, and the cover plate 4 to position and install the cover plate 4 and the magnetic yoke 31. The magnetic yoke 31 of the braking assembly 3 is connected to the armature 32 via a second connecting bolt 17. The bolt heads of several second connecting bolts 17 are positioned above the outer surface of the magnetic yoke 31 and have gaps between them. When manual release is required, tightening the second connecting bolts 17 pulls the armature 32 against the magnetic yoke 31. The cover plate 4 is connected to the rear end cover 7 of the motor via a third connecting bolt 18.

[0033] In one specific embodiment, an adjustable electromagnetic brake motor with equally spaced brake gap is provided. The motor housing 1 is provided with a rotor assembly 2 and a brake assembly 3. The rotor assembly 2 includes a motor shaft 21. The motor shaft 21 is provided with a first positioning boss 211 and a second positioning boss 212. Rolling bearings 9 are respectively installed in the motor front end cover 12 and the motor rear end cover 7 at both ends of the motor housing 1. The rolling bearings 9 are sleeved on both ends of the motor shaft 21 and cooperate with the first positioning boss 211 and the second positioning boss 212 of the motor shaft 21 respectively, so as to limit the axial movement of the motor shaft 21.

[0034] The braking assembly 3 is located at the tail end of the motor shaft 21 and includes at least a cover plate 4, a friction assembly 20, an armature 32, and a magnetic yoke 31 arranged sequentially from left to right along the axis of the motor shaft 21. The friction assembly has a brake disc 33 and friction rings 331 of the same outer diameter fixed on both sides of the brake disc 33. The brake disc 33 passes through the motor shaft 21 at its center. The rear end cover 7 of the motor is fixed with a cover plate 4. Both the cover plate 4 and the magnetic yoke 31 are provided with R-grooves for connecting with rubber sealing sleeves, so that the rubber sealing sleeves 13 can respectively seal the cover plate 4 and the magnetic yoke 31 for waterproofing and dustproofing. Both the magnetic yoke 31 and the armature 32 have circular through holes. The magnetic yoke 31 has a coil mounting groove facing the armature 32 to accommodate the brake coil 34. The magnetic yoke 31 and the armature 32 are connected and installed by bolts and positioning sleeves 15 to limit the armature 32 axially and allow it to move axially. The distance between the cover plate 4 and the magnetic yoke 31 is determined by the two ends of the hollow positioning sleeve 15 abutting against the cover plate 4 and the magnetic yoke 31 respectively. A plug 5 is provided at the circular through hole in the magnetic yoke 31 to cover the magnetic yoke 31.

[0035] In this embodiment, the annular cover plate 4 has threaded holes along its edge. The bolts connecting the magnetic yoke 31 and the armature 32 are divided into three first connecting bolts 16 and two second connecting bolts 17, spaced apart. The magnetic yoke 31 is connected to the threaded holes of the cover plate 4 via the first connecting bolts 16, which pass through a hollow positioning sleeve. There is a gap between the armature and the positioning sleeve, allowing the armature to slide axially along the positioning sleeve. The second connecting bolts 17 pass through the magnetic yoke and connect to the armature 32. The bolt heads of several second connecting bolts are positioned above the outer surface of the magnetic yoke and have gaps with it. When manual release is required, tightening the second connecting bolts pulls the armature against the magnetic yoke. The cover plate is connected to the rear end cover of the motor via a third connecting bolt 18. Preferably, the positioning sleeve 15 and the armature 32 are in a clearance fit, allowing the armature to slide axially along the positioning sleeve.

[0036] To further ensure the connection between the magnetic yoke 31 and the armature 32, a number of brake spring mounting holes are evenly distributed on the annular protrusion 311 on the side of the magnetic yoke 31 facing the armature 32, so that one end of the brake spring 312 is limited and installed in the brake spring mounting hole, and the other end abuts against the armature 32, providing the armature to press the friction assembly against the cover plate to generate braking pressure.

[0037] Specifically, on the motor shaft, near the brake end (tail end), a third positioning step 215, an external spline structure 213, and a first external thread 214 are sequentially formed at the tail end of the motor shaft 21. A friction assembly is disposed on the motor shaft and sleeved outside the tail end of the motor shaft. A receiving groove and an internal spline structure 332 are sequentially formed within the brake disc 33 of the friction assembly. The external spline structure 213 and the internal spline structure 332 are fitted together, allowing the brake disc 33 to rotate with the motor shaft 21 and achieve axial displacement relative to the motor shaft 21. A return spring 333 is disposed within the receiving groove, with its two ends abutting against the third positioning step on the motor shaft and the inner end face of the receiving groove, respectively. The elastic force of the return spring 333 is greater than the frictional force between the splines and the centrifugal axial component force during high-speed rotation, enabling the return spring 333 to prevent lateral axial movement due to friction. At least one limiting nut 6 is externally connected to the first external thread 214 for limiting the right side of the brake disc. Preferably, in this embodiment, two limiting nuts 6 are provided. The axial movement of the friction assembly is adjusted by one of the limiting nuts 6, so that the gaps between the two friction surfaces on both sides of the friction assembly and the armature 32 and the cover plate 4 are approximately equal, with a difference of ≤0.02mm. After adjusting the gap, the position of the limiting nut is kept still, and then the other limiting nut is tightened as a locking nut to close the other limiting nut to achieve double nut limiting. Preferably, the threaded mating surfaces of the two limiting nuts are coated with thread adhesive to further ensure that they do not loosen.

[0038] The rotor assembly has a return spring 333 on the motor shaft. One end of the return spring abuts against the groove on the left side of the third positioning step of the motor shaft as a limiting boss, and the other end abuts against the friction assembly. A brake coil is set between the magnetic yoke 31 and the armature 32. When the brake coil is energized and attracts the armature 32 to release the brake, the spring force of the return spring causes the friction assembly to move away from the cover plate 4 and towards the magnetic yoke 31, stopping at the limiting nut 6. This makes the distance between the friction surface and the armature and the cover plate nearly equal, ensuring that there is a large enough gap so that the friction assembly does not hit the armature and the cover plate when it rotates, thus avoiding the phenomenon of burning the friction ring.

[0039] Preferably, the magnetic yoke 31 of the brake and the outer circle of the cover plate 4 are provided with arc or square grooves to facilitate the installation of the sealing ring.

[0040] During use, the positions of the motor shaft 21 and the magnetic yoke 31 are fixed. When the brake coil is energized, the armature 32 is attracted to the magnetic yoke 31, which releases the brake from the friction assembly 20. The spring force of the return spring 333 causes the friction assembly to move away from the cover plate and toward the armature 32, and can push the armature 32 to move. The right end of the brake disc of the friction assembly 20 abuts against the limit nut. The friction rings 331 on both sides of the brake disc 33 have nearly equal gaps with the cover plate 4 and the armature 32. This prevents the friction assembly from axially shifting when the motor shaft drives the friction assembly to rotate at high speed, and avoids the friction rings from hitting the cover plate 4 or the armature 32 and being scratched or even burned. This can prevent the problem of not being able to release the brake due to high friction temperature or brake disc sticking.

[0041] When the brake coil is de-energized, the armature 32 moves toward the cover plate 4 under the push of the brake spring 312, and drives the friction assembly 20 to move, thereby increasing the compression of the return spring 333 and making the cover plate and friction ring fit tightly together to achieve the braking effect.

[0042] In an optional embodiment, the position of the limiting nut can be adjusted through the through hole in the magnetic yoke 31 covered by the plug 5. Friction rings 331 are provided on both sides of the brake disc 33, and the outer edge of the friction rings 331 coincides with the outer edge of the brake disc 33. When braking is performed in the power-off state, one friction ring will contact the armature 32, while the other friction ring will contact the cover plate 4. The brake motor generates heat during use. To increase the heat dissipation area, preferably, the motor housing 1 is provided with multiple heat dissipation fins 11, which are arranged axially around the motor housing 1.

[0043] Furthermore, in this embodiment, the top of the motor housing 1 is provided with a junction box 8, and the junction box 8 is provided with multiple waterproof connectors 81 to improve the protection level of the product, improve waterproofness, and prevent rainwater and humid air from entering the contact friction ring, causing it to rust or the coil circuit of the magnetic yoke 31 to short-circuit.

[0044] In this embodiment, an encoder 14 is also fitted on the motor shaft 21. The encoder 14 is connected to an encoder connector 10 located outside the housing via a wiring harness, so as to convert the mechanical motion information of the motor shaft into an electrical signal in real time and feed it back to the control system, thereby realizing precise closed-loop control.

[0045] This invention effectively solves the problem of burning friction rings in existing technologies. By adjusting the limiting nuts on the motor shaft, the gap between the friction surface of the friction ring and the armature and cover plate can be evenly distributed, providing sufficient clearance to prevent the friction ring from being scratched or even burned when it hits the armature or cover plate during the rotation of the friction assembly. The two limiting nuts on the motor shaft can be tightened together and secured with threaded adhesive to ensure no loosening. The outer ring has a sealing ring and a plug to prevent water and debris from entering the friction assembly area.

[0046] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An adjustable electromagnetic brake motor with evenly spaced brake gap, characterized in that, Including rotor assembly and braking assembly; The rotor assembly has a rotatable motor shaft that is rotatably and limit-mounted within the motor housing; the tail of the motor shaft has a first limiting part and a second limiting part, which limit the installation of the friction assembly by a certain amount of axial displacement through the first limiting part and the second limiting part, and the motor shaft drives the friction assembly to rotate together; The braking assembly includes a cover plate, a friction assembly, an armature, a brake coil, and a magnetic yoke arranged sequentially, as well as a return spring with its left end limited and sleeved at the tail of the motor shaft, and brake springs with their two ends abutting against the armature and the magnetic yoke respectively. The cover plate is fixedly installed on the rear end cover of the motor. The friction assembly abuts against the right end of the return spring. The return force of the return spring can move the friction assembly closer to the armature. The magnetic yoke is installed at a fixed distance from the cover plate. The armature is axially movable and is located between the magnetic yoke and the friction assembly. The brake coil is located in the annular groove of the magnetic yoke and between the magnetic yoke and the armature. The armature moves closer to or away from the magnetic yoke by switching the brake coil on and off. When the brake coil is energized and generates an attractive force to draw the armature close to the magnetic yoke, the right side of the friction assembly is limited by the second limiting part, so that the friction surfaces on the left and right sides of the friction assembly have equally spaced gaps with the cover plate and the armature, respectively. When the brake coil is de-energized and the attractive force is eliminated, the elastic force of the brake spring causes the armature to move away from the magnetic yoke, pushing the armature to press the friction assembly against the cover plate, so that the friction surfaces on the left and right sides of the friction assembly generate braking torque, thereby achieving braking.

2. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, The motor shaft tail end is sequentially formed with a third positioning step, an external spline structure, and a first external thread, which are used to install a return spring, a friction assembly, and a limiting nut, respectively. The friction assembly has an internal spline structure that mates with the external spline structure, so that the friction assembly can rotate with the motor shaft and can be axially displaced relative to the motor shaft. The limiting nut forms the second limiting part, and the third positioning step forms the first limiting part on the side away from the limiting nut.

3. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 2, characterized in that, The limiting nuts are provided in no fewer than two, so that they can be interlocked to prevent loosening, and the threaded mating surfaces of the limiting nuts are coated with thread-locking adhesive to further ensure that they do not loosen.

4. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, The magnetic yoke, armature, and cover plate are all provided with circular through holes, and the through holes of the magnetic yoke are fitted with plugs.

5. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, The friction assembly includes a brake disc and friction rings disposed on the left and right sides of the brake disc.

6. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, Both the cover plate and the magnetic yoke are provided with R-grooves that are connected to rubber sealing sleeves, so as to provide a waterproof and dustproof seal between the cover plate and the magnetic yoke through the rubber sealing sleeves.

7. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, The magnetic yoke is connected to the cover plate through the hollow positioning sleeve via the first connecting bolt, and there is a gap between the armature and the positioning sleeve, allowing the armature to slide along the axial direction of the positioning sleeve.

8. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 7, characterized in that, The magnetic yoke is connected to the armature by a second connecting bolt. The bolt heads of several second connecting bolts are set higher than the outer surface of the magnetic yoke and there is a gap between them and the magnetic yoke. When manual release is required, the armature is pulled to stick to the magnetic yoke by tightening the second connecting bolts. The cover plate is connected to the rear end cover of the motor by a third connecting bolt.

9. The adjustable electromagnetic brake motor with evenly spaced brake gap according to claim 1, characterized in that, The magnetic yoke has several brake spring mounting holes evenly distributed on the side facing the armature, so that one end of the brake spring is limited and installed in the brake spring mounting hole, and the other end abuts against the armature, providing the armature to press the friction assembly against the cover plate to generate braking pressure.

10. An adjustable electromagnetic brake motor with equally spaced brake gap according to any one of claims 1-9, characterized in that, The motor shaft has a first positioning boss and a second positioning boss. Rolling bearings are installed in the front end cover and rear end cover of the motor housing, respectively. The rolling bearings are sleeved on both ends of the motor shaft and cooperate with the first positioning boss and the second positioning boss of the motor shaft, respectively, so as to limit the axial movement of the motor shaft.

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