Permanent magnet modular cooling direct current energy-saving motor

Abstract

The application discloses a permanent magnet module type cooling direct-current energy-saving motor and relates to the technical field of electrical engineering. The permanent magnet module type cooling direct-current energy-saving motor comprises a motor shell, a rear end cover and a front end cover. A common shaft is rotationally connected to the front end cover. A commutator and an armature module are fixedly connected to the outer wall of the common shaft in sequence. A T-shaped seat is circularly arranged on the inner wall of the motor shell. A pair of electric brushes are attached to the outer wall of the commutator. A bidirectional cleaning assembly is arranged at one end of the commutator. The bidirectional cleaning assembly is pulled by manpower to move a cleaning ring cylinder along the outer wall of the commutator, and the electric brush powder on the outer wall of the commutator is synchronously adsorbed and cleaned through the cooperation of the inner suction hole, thereby avoiding poor contact caused by dust accumulation. Compared with the traditional manual disassembly and cleaning mode of the electric brush and the commutator, the maintenance steps and downtime are significantly reduced, and the motor operation stability and reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, and in particular to a permanent magnet modular cooled DC energy-saving motor. Background Technology

[0002] Energy-saving motors are motors that improve energy conversion efficiency and reduce energy loss through optimized design and material selection. They have been improved in structure, electromagnetic design and control methods, such as using high-permeability silicon steel sheets, thus consuming less electrical energy at the same output power. Their core feature is the use of brushes and commutators to achieve automatic switching of current direction. The brushes of DC motors are generally made of graphite or metallic graphite materials, which have good conductivity and wear resistance. During the high-speed contact and sliding process between the brushes and the outer wall of the commutator, fine graphite powder or metal dust will be generated due to friction. Long-term accumulation will affect commutation performance, leading to sparks or poor contact. Therefore, the commutator surface needs to be cleaned regularly.

[0003] In the existing technology, workers need to remove the motor cover from the motor housing, remove the brushes from the brush holder, clean the commutator and brushes one by one, and then put the brushes and motor cover back to their initial positions. The operation is cumbersome, labor-intensive, and has a long cleaning cycle. This can easily lead to increased motor downtime, causing the equipment driven by the motor to be shut down for a long time during maintenance, resulting in decreased equipment operating efficiency and affecting the overall production cycle and equipment utilization rate. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that requires workers to remove the motor cover from the motor housing, then remove the brushes from the brush holder, clean the commutator and brushes in sequence, and then restore the brushes and motor cover to their initial positions. This process is cumbersome, labor-intensive, and time-consuming, which can lead to increased motor downtime and prolonged downtime of the equipment driven by the motor during maintenance, resulting in decreased equipment operating efficiency and affecting the overall production cycle and equipment utilization. The invention proposes a permanent magnet modular cooled DC energy-saving motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A permanent magnet modular cooled DC energy-saving motor includes a motor housing, a rear end cover, and a front end cover. The front end cover is fixedly connected to the side of the motor housing, and a common shaft is rotatably connected to the front end cover. A commutator and an armature module are sequentially fixedly connected to the outer wall of the common shaft. T-shaped seats are arranged in a circular array on the inner wall of the motor housing, and permanent magnets are fitted on the T-shaped seats. The common shaft, armature module, and commutator constitute the rotor structure of the motor. A pair of brushes are attached to the outer wall of the commutator. A bidirectional cleaning component is provided at one end of the commutator in the motor housing. The bidirectional cleaning component travels along the outer wall of the commutator and adsorbs residual brush powder on the outer wall of the commutator. A brush fixing module is provided on one side of the inner cavity of the motor housing to fix the brush to the outer wall of the commutator. The motor housing is provided with a self-avoiding component on the side of the commutator. When the bidirectional cleaning component moves to the side of the brush, the self-avoiding component drives the brush to detach from the outer wall of the commutator.

[0006] Optionally, the brush fixing module includes a mounting plate, a horizontal U-shaped rod, an extension rod, and a mounting arc rod. The mounting plate is fixedly connected to the inner wall of the motor housing. The horizontal U-shaped rod is fixedly connected to the mounting plate. An extension rod is symmetrically fixedly connected to the side of the horizontal U-shaped rod away from the mounting plate. A mounting arc rod is rotatably connected to the extension rod. A brush is fixedly connected to the end of the mounting arc rod.

[0007] Optionally, the bidirectional cleaning assembly includes a cleaning ring cylinder, a docking box, a pull rope, and a positioning suction assembly. An edge cover is fixedly connected to the side of the cleaning ring cylinder, and a separator ring is fixedly provided in the middle of the side of the cleaning ring cylinder. The inner diameter of the cleaning ring cylinder is larger than the outer diameter of the commutator. The cleaning ring cylinder is sleeved on the outer wall of the commutator, and the docking box is fixedly connected to the side of the cleaning ring cylinder.

[0008] Optionally, the positioning external suction assembly includes a U-shaped rod and a partition plate. The partition plate is fixedly connected to the middle position of the docking box. An air inlet is provided below the partition plate in the docking box. A U-shaped rod is movably inserted into the docking box at the same horizontal height as the air inlet. Both ends of the U-shaped rod are fixedly connected to the mounting plate. A release hole is provided on one side of the U-shaped rod.

[0009] Optionally, the inner wall of the cleaning ring cylinder is provided with internal suction holes at equal intervals, and both the upper and lower ends of the cleaning ring cylinder are provided with external suction holes. The docking box is provided with an internal inlet hole at one end of the inner cavity of the cleaning ring cylinder, and an external inlet hole is provided at the bottom of the docking box.

[0010] Optionally, the self-avoidance component includes a rope wheel, a horizontal rope, a common vertical frame, a force-bearing plate, and a force-applying column. The end of the mounting arc rod shaft is fixedly connected to the rope wheel, the side of the rope wheel is fixedly connected to one end of a torsion spring, and the other end of the torsion spring is fixedly connected to the extension rod.

[0011] Optionally, a horizontal rope is wound around the outer wall of the rope wheel, and the other end of the horizontal rope is fixedly connected to the common vertical frame. An avoidance groove is provided on the horizontal U-bar, and the force plate extends into the avoidance groove and is fixedly connected to the common vertical frame. The common vertical frame is fitted onto the horizontal U-bar, and a zigzag groove is provided on one side of the force plate.

[0012] Optionally, a force-applying column is fixedly connected to the end of the docking box. The force-applying column travels along the surface of the zigzag groove. A guide column is fixedly connected to the side of the force-bearing plate opposite to the zigzag groove. The outer wall of the guide column is fixedly connected to one end of a retaining spring, and the other end of the retaining spring is fixedly connected to the side of the clearance groove.

[0013] Optionally, the docking box is fixedly connected to an elastic bellows on one side of the air inlet, and the end of the elastic bellows is fixedly connected to the front cover.

[0014] Optionally, a pull rope is fixedly connected to the end of the docking box away from the cleaning ring cylinder, and a pull handle is fixedly connected to the pull rope extending from one side of the front cover.

[0015] Optionally, an auxiliary fan blade is fixedly connected to the end of the common shaft, and a receiving cavity is opened on the side opposite to the front cover of the motor housing, and an installation mesh disk is fixedly connected inside the receiving cavity.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This invention, by setting a bidirectional cleaning component inside the motor housing, allows manual pulling of the pull rope on the bidirectional cleaning component to move the cleaning ring cylinder along the outer wall of the commutator after disassembling the motor and brushes. This, combined with the internal suction hole, enables the synchronous adsorption and cleaning of brush powder on the outer wall of the commutator, avoiding dust accumulation that leads to poor contact. Compared with the traditional method of manually disassembling the brushes and cleaning the commutator, this invention significantly reduces maintenance steps and downtime, improves the stability and reliability of motor operation, extends the service life of the commutator and brushes, and achieves self-cleaning operation of the motor.

[0017] 2. By setting a self-avoidance component, the present invention can automatically drive the brush to detach from the outer wall of the commutator when the bidirectional cleaning component moves to the brush area, preventing direct friction or squeezing between the cleaning ring and the brush. The self-avoidance component, combined with the linkage mechanism of the rope wheel, horizontal rope and herringbone groove, makes the avoidance action automatic and does not require external control. After cleaning, the brush automatically resets under the action of the torsion spring and the holding spring, ensuring stable brush contact force and avoiding wear and poor contact problems.

[0018] 3. The present invention sets auxiliary fan blades at the end of the common shaft and opens a receiving cavity and installs a mesh plate on the opposite side of the front cover of the motor housing to form an effective ventilation and cooling channel, so that the heat generated by the motor during operation can be quickly discharged. Combined with the permanent magnet modular armature design, it reduces energy loss and temperature rise, significantly improves motor efficiency and stability, and meets the needs of long-term high-load operation.

[0019] 4. One of the core components of the bidirectional cleaning component of the present invention is the positioning external suction component. When the bidirectional cleaning component moves to the brush position and the self-avoidance component lifts the brush, the positioning external suction component can wrap around the outer wall of the brush and suck away any powder that may remain on the outer wall of the brush. Due to the limitations of the mechanical structure, the positioning external suction component only activates the external suction function when the bidirectional cleaning component reaches the outer wall of the brush. This avoids the vacuuming equipment connected to one end of the elastic bellows from running continuously for a long time, reduces unnecessary air source consumption, and thus saves energy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 for Figure 1 A structural diagram from another perspective.

[0022] Figure 3 for Figure 1 A schematic diagram of the fully exploded structure.

[0023] Figure 4 This is a diagram showing the internal structure of the motor housing.

[0024] Figure 5 This is a schematic diagram of the rotor module.

[0025] Figure 6 This is a schematic diagram showing the combined effect of the bidirectional cleaning component and the self-avoidance component.

[0026] Figure 7 for Figure 6 Another perspective structural diagram.

[0027] Figure 8 This is a schematic diagram of the cooperation structure between the self-avoiding component and the brush.

[0028] Figure 9 This is a schematic diagram of the structure of the brush and its connecting parts.

[0029] Figure 10 This is a schematic diagram of the bidirectional cleaning component.

[0030] Figure 11 for Figure 10 Another perspective structural diagram.

[0031] Figure 12 This is a schematic diagram of a half-section of the docking box.

[0032] Figure 13 This is a schematic diagram of the connection structure between the mounting plate and the U-shaped rod.

[0033] Figure 14 This is a schematic diagram of the structure of the brush and its connecting parts.

[0034] Figure 15 This is a schematic diagram of the docking box.

[0035] In the diagram: 1. Rear end cover; 2. Motor housing; 3. Front end cover; 4. Mounting tray; 5. Support frame; 6. Receiving cavity; 7. T-shaped seat; 71. Permanent magnet; 8. Commutator; 9. Common shaft; 91. Auxiliary fan blade; 92. Armature module; 10. Mounting plate; 11. Pull rope; 110. Pull handle; 12. Elastic bellows; 13. U-shaped rod; 131. Release hole; 14. Force plate; 141. Zigzag groove; 142. Holding spring; 143. 15. Guide post; 151. Mounting arc rod; 152. Brush; 153. Torsion spring; 16. Rope pulley; 17. Horizontal rope; 18. Common vertical frame; 19. Horizontal U-bar; 191. Clearance groove; 192. Extension rod; 20. Cleaning ring cylinder; 21. Edge cover; 210. External suction port; 211. Internal suction port; 22. Docking box; 220. Force application column; 221. Internal inlet hole; 222. External inlet hole; 23. Separator ring; 24. Air inlet; 25. Separator plate. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Reference Figures 1-15A permanent magnet modular cooled DC energy-saving motor includes a motor housing 2, a rear end cover 1, and a front end cover 3. The front end cover 3 is bolted to the side of the motor housing 2. A common shaft 9 is rotatably connected to the front end cover 3 via a bearing. A commutator 8 and an armature module 92 are bolted to the outer wall of the common shaft 9. A T-shaped seat 7 is formed by a circular array of bolts on the inner wall of the motor housing 2. A permanent magnet 71 is mounted on the T-shaped seat 7, which can provide a stable and constant magnetic field during motor operation, eliminating the need for an additional excitation coil power supply, thereby significantly reducing energy loss. Compared with traditional electromagnetic DC motors, the permanent magnet replaces the excitation winding, which can reduce copper and iron losses and improve the overall efficiency of the motor. The common shaft 9, armature module 92, and commutator 8 form the rotor structure of the motor. Finally, a support frame 5 is fixedly welded to the bottom of the motor housing 2. The bottom of the support frame 5 has a circular array of grooves, through which expansion bolts can be installed to fix the entire motor to the frame.

[0039] The armature module 92 is mounted on the common shaft 9 and consists of an iron core, coil windings, and a support frame. The iron core adopts a laminated silicon steel sheet structure to reduce eddy current losses. The coil windings are evenly wound in the iron core slots to generate electromagnetic torque. The commutator 8 is fixedly mounted on the outer wall of the common shaft 9 and consists of multiple copper commutator segments evenly arranged in the circumferential direction. An insulating layer is provided between the commutator segments to isolate adjacent coil circuits. Its outer surface is smooth and in contact with the brushes to achieve periodic switching of the current direction. The commutator is made of highly conductive copper. Since the armature module 92 and the commutator 8 are mature motor parts in the prior art, their detailed structures are not disclosed in this application.

[0040] An auxiliary fan blade 91 is fixedly welded to the end of the common shaft 9. The motor housing 2 has a receiving cavity 6 on the side opposite the front cover 3. The receiving cavity 6 is a stepped cavity. The mounting plate 4 is fixedly connected to the receiving cavity 6 by bolts. When the mounting plate 4 is inserted into the stepped cavity, the mounting plate 4 is flush with the motor housing 2. When the common shaft 9 rotates, the auxiliary fan blade 91 will also rotate synchronously, generating forced airflow. The air flows through the ventilation holes of the receiving cavity 6 and the mounting plate 4, forming an internal circulation cooling effect. This structure can quickly dissipate the heat generated during the operation of the motor, reduce the temperature rise of the commutator, armature module and permanent magnet, and prevent performance degradation. At the same time, the hexagonal slots arrayed on the surface of the mounting plate 4 meet the heat dissipation requirements of the motor while preventing dust from being introduced into the motor housing 2.

[0041] A pair of brushes 151 are attached to the outer wall of the commutator 8. The brushes 151 are also mature parts in the prior art. The contact position between the brushes 151 and the commutator 8 is set as an arc surface. The motor housing 2 is provided with a bidirectional cleaning component at one end of the commutator 8. The bidirectional cleaning component moves along the outer wall of the commutator 8 and adsorbs residual brush powder on the outer wall of the commutator 8. The bidirectional cleaning component includes a cleaning ring cylinder 20, a docking box 22, a pull rope 11, and a positioning external suction component. In order to ensure that the cleaning ring cylinder 20 performs the dust suction function when moving laterally without contacting the surface of the commutator 8, which would cause the surface of the commutator 8 to be worn, the cleaning ring cylinder 20 is not only fitted on the outer wall of the commutator 8, but also its inner diameter is slightly larger than the outer diameter of the commutator 8 when it is set.

[0042] The cleaning ring cylinder 20 is fixedly connected to the docking box 22 on its side. The end of the docking box 22 away from the cleaning ring cylinder 20 is attached to a pull rope 11. The pull rope 11 extends from one side of the front cover 3 and is fixedly connected to a pull handle 110. When the pull handle 110 is pulled manually, the integrated structure of the cleaning ring cylinder 20 and the docking box 22 will be pulled along the axis of the commutator 8 through the pull rope 11.

[0043] The external suction assembly includes a U-shaped rod 13 and a partition plate 25. The partition plate 25 is fixedly welded to the middle of the docking box 22. The U-shaped rod 13 has a release hole 131 on one side of the horizontal U-shaped rod 19. The inner ring wall of the cleaning ring cylinder 20 has internal suction holes 211 at equal intervals for adsorbing residual powder on the surface of the commutator 8. The upper and lower ends of the cleaning ring cylinder 20 have external suction holes 210. The arc length of the multiple external suction holes 210 is slightly larger than the arc length of the friction surface of the brush 151. The multiple external suction holes 210 are used to adsorb residual powder on the friction surface of the brush 151. The side of the cleaning ring cylinder 20 is fixedly connected to the edge cover 21 by bolts. The cleaning ring cylinder 20 and the edge cover 21 form a ring-shaped cleaning suction component.

[0044] A partition ring 23 is fixedly welded to the middle of the side of the cleaning ring cylinder 20, dividing the inner cavity of the cleaning ring cylinder 20 into two independent annular chambers. (See details...) Figure 11 The outer annular chamber is connected to the outer suction port 210, while the inner annular chamber is connected to the inner suction port 211. The docking box 22 has an air inlet 24 below the partition plate 25. The docking box 22 has an inner inlet 221 at one end of the inner cavity of the cleaning ring cylinder 20, and an outer inlet 222 at the bottom. When the docking box 22 is fixed to the entire cleaning ring cylinder 20, refer to... Figure 11 The end of the docking box 22 is a certain distance from the inner ring wall of the cleaning ring cylinder 20. The outer connection hole 222 of the docking box 22 is connected to the inner annular cavity, while the outer inlet hole 222 is located inside the outer annular cavity. A U-shaped rod 13 is movably inserted into the docking box 22 at the same horizontal height as the air inlet hole 24. The two ends of the U-shaped rod 13 are fixedly connected to the mounting plate 10 with bolts.

[0045] In fact, there is no need to set up a partition plate 25 inside the docking box 22 to isolate the air intake channels of the external suction port 210 and the internal suction port 211, and to separate the cleaning work on the surface of the commutator 8 from the brush 151. However, when the cleaning ring cylinder 20 moves laterally, the external suction port 210 does not come into contact with the friction surface of the brush 151, so there is no need to perform vacuuming. If the external vacuuming equipment is used to vacuum both the internal suction port 211 and the external suction port 210 at the same time, the adsorption energy of the external suction port 210 will be wasted.

[0046] The docking box 22 is fixedly connected to one side of the air inlet 24 with an elastic bellows 12. The end of the elastic bellows 12 is fixedly connected to the front cover 3. The elastic bellows 12 has a certain elasticity. On the one hand, the elastic bellows 12 can be connected to a vacuum cleaner, serving as a connection channel between the entire bidirectional cleaning component and the external vacuum cleaner. On the other hand, it serves as an elastic reset component of the entire bidirectional cleaning component. When the pulling rope 11 is released manually, the cleaning ring cylinder 20 will be driven to retract to one end of the commutator 8 due to the reset of the elastic bellows 12.

[0047] A brush fixing module is provided on one side of the inner cavity of the motor housing 2 to fix the brush 151 to the outer wall of the commutator 8. The brush fixing module includes a mounting plate 10, a horizontal U-shaped rod 19, an extension rod 192, and a mounting arc rod 15. The mounting plate 10 is fixedly connected to the inner wall of the motor housing 2 by bolts. The horizontal U-shaped rod 19 is fixedly welded to the mounting plate 10 and is in a horizontal state. The extension rod 192 is symmetrically fixedly welded to the side of the horizontal U-shaped rod 19 away from the mounting plate 10. The mounting arc rod 15 is rotatably connected to the extension rod 192 by bearings. The brush 151 is fixedly connected to the end of the mounting arc rod 15 by screws. (Reference) Figure 7 Two brushes 151 are distributed at the upper and lower ends of the commutator 8.

[0048] The motor housing 2 is provided with a self-avoiding component on the side of the commutator 8. When the bidirectional cleaning component moves to the side of the brush 151, the self-avoiding component drives the brush 151 to disengage from the outer wall of the commutator 8. The self-avoiding component includes a rope wheel 16, a horizontal rope 17, a common vertical frame 18, a force plate 14, and a force application column 220. The rope wheel 16 is fixedly welded to the end of the shaft of the mounting arc rod 15. The side of the rope wheel 16 is fixedly welded to one end of the torsion spring 152. The other end of the torsion spring 152 is fixedly welded to the extension rod 192. When the torsion spring 152 is in its original position, the brushes 151 on the two mounting arc rods 15 are in a state of contact with the surface of the commutator 8.

[0049] A horizontal rope 17 is wound around the outer wall of the rope reel 16. The other end of the horizontal rope 17 is tied to the common vertical frame 18. A clearance groove 191 is provided on the horizontal U-bar 19. The force plate 14 extends into the clearance groove 191 and is fixedly connected to the common vertical frame 18 with bolts. The common vertical frame 18 is fitted on the horizontal U-bar 19. When the common vertical frame 18 is subjected to force and moves along the horizontal U-bar 19, it will pull the horizontal rope 17, thereby releasing the horizontal rope 17 from the rope reel 16 and driving the rope reel 16 to rotate. This will drive the two brushes 151 to move away from the surface of the commutator 8. Therefore, the horizontal ropes 17 on the two rope reels 16 need to be wound in opposite directions.

[0050] A zigzag groove 141 is provided on one side of the force plate 14. A force-applying column 220 is fixedly connected to the end of the docking box 22. The force-applying column 220 moves along the surface of the zigzag groove 141. A guide column 143 is fixedly welded to the side of the zigzag groove 141 of the force plate 14. The outer wall of the guide column 143 is fixedly connected to one end of the retaining spring 142. The other end of the retaining spring 142 is fixedly connected to the side of the clearance groove 191. The retaining spring 142 keeps the horizontal rope 17 taut at all times. In fact, the zigzag groove 141 includes two parallel surfaces, and an inclined surface is provided between the two parallel surfaces. When the force-applying column 220 moves along the zigzag groove 141, it will push the common vertical frame 18 away from the two extension rods 192.

[0051] The specific implementation steps and principles of this invention are as follows: When the entire motor is working normally, the torsion spring 152 and the retaining spring 142 are both in their original lengths, the two brushes 151 are attached to the surface of the commutator 8, the elastic bellows 12 is in its original length, and the cleaning ring 20 is located at the end of the commutator 8 away from the front cover 3.

[0052] When it is necessary to clean both the brush 151 and the commutator 8, connect one end of the flexible bellows 12 to a vacuum cleaner, such as an industrial vacuum cleaner, and manually hold the pull handle 110 to pull the pull rope 11, which will move the docking box 22 and the cleaning ring cylinder 20 along the outer wall of the commutator 8. During this process, the cleaning ring cylinder 20 is equipped with a partition ring 23, which divides the inner cavity of the cleaning ring cylinder 20 into two independent chambers. The docking box 22 is equipped with a partition plate 25, which divides the inner cavity of the docking box 22 into two independent chambers, and connects the external suction hole 210 and the internal suction hole 211 to the two independent chambers respectively.

[0053] When the cleaning ring cylinder 20 moves along the outer wall of the commutator 8, but before it reaches between the two brushes 151, the vacuuming device connected to the flexible bellows 12 can vacuum the surface of the commutator 8 through the inner inlet 221 and the inner suction port 211, while referring to... Figure 13The air inlet 24 is constantly blocked by the U-shaped rod 13, and the vacuuming equipment connected to the elastic corrugated pipe 12 cannot connect with the lower chamber of the docking box 22 separated by the partition plate 25 and the external inlet 222, so as to use the external suction hole 210 to vacuum.

[0054] When the cleaning ring 20 moves to the vicinity of the two brushes 151, the force column 220 at one end of the docking box 22 moves along the zigzag groove 141, thereby pushing the common vertical frame 18 away from the two extension rods 192. The horizontal rope 17 rotates by pulling the rope wheel 16, thereby driving the two mounting arc rods 15 to rotate around their rotation axis. The two brushes 151 leave the outer wall of the commutator 8. When the docking box 22 moves between the clearance grooves 191, the release hole 131 on the U-shaped rod 13 is aligned with the air inlet 24. The vacuuming equipment connected to the elastic corrugated tube 12 can be connected through the lower chamber of the docking box 22 separated by the partition plate 25 and the external inlet 222, thereby using the external suction hole 210 to vacuum.

[0055] After waiting for a period of time, the worker releases the pull rope 11. At this time, due to the reset of the elastic bellows 12, the cleaning ring cylinder 20 is reset, the torsion spring 152 and the holding spring 142 return to their original length, the two brushes 151 are attached to the surface of the commutator 8, the elastic bellows 12 is in its original length, and the cleaning ring cylinder 20 is at the end of the commutator 8 away from the front cover 3.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A permanent magnet modular cooled DC energy-saving motor, comprising a motor housing, a rear end cover, and a front end cover, characterized in that, A front cover is fixedly connected to the side of the motor housing. A common shaft is rotatably connected to the front cover. A commutator and an armature module are fixedly connected to the outer wall of the common shaft in sequence. T-shaped seats are arranged in a circular array on the inner wall of the motor housing. A permanent magnet is fitted on the T-shaped seats. The common shaft, armature module, and commutator constitute the rotor structure of the motor. A pair of brushes are attached to the outer wall of the commutator. A bidirectional cleaning component is provided at one end of the commutator in the motor housing. The bidirectional cleaning component travels along the outer wall of the commutator and adsorbs residual brush powder on the outer wall of the commutator. A brush fixing module is provided on one side of the inner cavity of the motor housing to fix the brush to the outer wall of the commutator. The motor housing is provided with a self-avoiding component on the side of the commutator. When the bidirectional cleaning component moves to the side of the brush, the self-avoiding component drives the brush to detach from the outer wall of the commutator. The bidirectional cleaning assembly includes a cleaning ring cylinder, a docking box, a pull rope, and a positioning external suction assembly. An edge cover is fixedly connected to the side of the cleaning ring cylinder, and a partition ring is fixedly provided in the middle of the side of the cleaning ring cylinder. The inner diameter of the cleaning ring cylinder is larger than the outer diameter of the commutator. The cleaning ring cylinder is sleeved on the outer wall of the commutator, and a docking box is fixedly connected to the side of the cleaning ring cylinder. The positioning external suction component includes a U-shaped rod and a partition plate. The partition plate is fixedly connected to the middle position of the docking box. An air inlet is opened below the partition plate in the docking box. A U-shaped rod is movably inserted into the docking box at the same horizontal height as the air inlet. Both ends of the U-shaped rod are fixedly connected to the mounting plate. A release hole is opened on one side of the U-shaped rod. The inner wall of the cleaning ring cylinder is provided with equidistant internal suction holes, and both the upper and lower ends of the cleaning ring cylinder are provided with external suction holes. The docking box is provided with an internal inlet hole at one end of the inner cavity of the cleaning ring cylinder, and an external inlet hole at the bottom of the docking box.

2. The permanent magnet modular cooled DC energy-saving motor according to claim 1, characterized in that, The brush fixing module includes a mounting plate, a horizontal U-shaped rod, an extension rod, and a mounting arc rod. The mounting plate is fixedly connected to the inner wall of the motor housing. The horizontal U-shaped rod is fixedly connected to the mounting plate. The extension rod is symmetrically fixedly connected to the side of the horizontal U-shaped rod away from the mounting plate. The mounting arc rod is rotatably connected to the extension rod. The brush is fixedly connected to the end of the mounting arc rod.

3. A permanent magnet modular cooled DC energy-saving motor according to claim 2, characterized in that, The self-avoidance component includes a rope wheel, a horizontal rope, a common vertical frame, a force-bearing plate, and a force-applying column. The end of the mounting arc rod shaft is fixedly connected to the rope wheel, and the side of the rope wheel is fixedly connected to one end of a torsion spring. The other end of the torsion spring is fixedly connected to the extension rod.

4. A permanent magnet modular cooled DC energy-saving motor according to claim 3, characterized in that, The outer wall of the rope reel is wound with a horizontal rope, and the other end of the horizontal rope is fixedly connected to the common vertical frame. The horizontal U-shaped rod has a clearance groove. The force plate extends into the clearance groove and is fixedly connected to the common vertical frame. The common vertical frame is fitted onto the horizontal U-shaped rod. A zigzag groove is provided on one side of the force plate.

5. A permanent magnet modular cooled DC energy-saving motor according to claim 4, characterized in that, A force-applying column is fixedly connected to the end of the docking box. The force-applying column travels along the surface of the zigzag groove. A guide column is fixedly connected to the side of the force-bearing plate opposite to the zigzag groove. The outer wall of the guide column is fixedly connected to one end of the retaining spring, and the other end of the retaining spring is fixedly connected to the side of the clearance groove.

6. A permanent magnet modular cooled DC energy-saving motor according to claim 2, characterized in that, The docking box is fixedly connected to an elastic bellows on one side of the air inlet, and the end of the elastic bellows is fixedly connected to the front cover.

7. A permanent magnet modular cooled DC energy-saving motor according to claim 1, characterized in that, The docking box is fixedly connected to a pull rope at the end away from the cleaning ring cylinder, and the pull rope extends from one side of the front cover and is fixedly connected to a pull handle.

8. A permanent magnet modular cooled DC energy-saving motor according to claim 1, characterized in that, An auxiliary fan blade is fixedly connected to the end of the common shaft, and a receiving cavity is opened on the side opposite to the front cover of the motor housing, and an installation mesh disk is fixedly connected inside the receiving cavity.

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