A permanent magnet synchronous motor

Abstract

The present invention discloses a permanent magnet synchronous motor, which relates to the technical field of motors. The permanent magnet synchronous motor includes a mounting seat, the upper surface of which is fixedly connected to a motor body, the output shaft of which is connected to a cooling shaft via a first coupling, the upper surface of which is fixedly connected to a bearing seat, the connecting shaft passes through the bearing seat and is rotatably connected to the bearing seat; the upper surface of the mounting seat is fixedly connected to a driver for the permanent magnet synchronous motor. The permanent magnet synchronous motor of the present invention is cooled by the cooling shaft, isolating the motor body from the connecting shaft, and has a better cooling and heat dissipation effect; and solves the problem that the wiring terminals on the existing driver have a poor fixing effect on the connected circuit, and are easily affected by external forces during use and fall off or loosen, affecting normal use.

Description

Technical Field

[0001] The present invention relates to the technical field of electric motors, and in particular to a permanent magnet synchronous motor. Background Art

[0002] Permanent magnet synchronous motors (motors) use permanent magnets to provide excitation, which makes the motor structure simpler, reduces processing and assembly costs, and eliminates slip rings and brushes that are prone to problems, thereby improving the reliability of motor operation.

[0003] High-power permanent magnet motors, due to their low speed and high power density requirements, typically have a high heat load. Their rotors use permanent magnet excitation, and without a heat source, making them well-suited for frame air cooling. Heat generated by the stator windings and core is expelled from the motor via the fan, accelerating the cool air in the air duct. This ensures that the temperature rise of each motor component meets design requirements. The heat dissipation capacity of the exhaust hood plays a significant role in improving the overall lifespan of the motor. Traditional motor exhaust hoods often have a single heat dissipation method, relying solely on the rotation of the main exhaust blades located at the motor end. This results in low heat dissipation efficiency and can easily burn out the motor. Therefore, a permanent magnet synchronous motor with multiple structures for simultaneous heat dissipation and high heat dissipation efficiency has been designed.

[0004] At present, although the existing permanent magnet synchronous motors have a variety of heat dissipation structures, they often only consider the heat dissipation of the motor itself. In the process of the motor rotating with the connecting shaft, the heat of the motor itself will be transferred to the upper part, and the heat generated by the high-speed rotation of the connecting shaft will also be transferred to the motor. There is mutual interference between the two, resulting in the heat being unable to be effectively dissipated.

[0005] The permanent magnet synchronous motor driver is a dedicated permanent magnet synchronous motor drive circuit designed to drive two permanent magnet synchronous motors. It provides functions such as motor control signal processing, isolation amplification, encoder information communication, power conversion, current limiting protection, and motor drive. It controls the speed, steering, and braking of two-axis torque-driven permanent magnet synchronous motors. The module features a disable output function for unified control of both outputs.

[0006] Due to the simple structure of permanent magnet synchronous motors, when combined with a high-efficiency motor driver, control performance can be significantly improved, while also providing superior flexibility. This driver increases the steady-state operating time of permanent magnet synchronous motors and eliminates slip, making it suitable for a variety of applications, enhancing the stability and flexibility of actuation systems.

[0007] However, in the existing motor drivers, most of the connections are made by directly inserting the end of the line into the terminal block and tightening the bolts to fix the end of the line. The fixing effect of the line is poor and it is easy to fall off or loosen due to external force during use, affecting normal use.

[0008] In addition, the bearings used inside the permanent magnet synchronous motors currently on the market will wear out after the permanent magnet synchronous motors have been running for a long time. In order to improve the operating efficiency of the permanent magnet synchronous motors, the bearings need to be disassembled, cleaned and maintained. However, due to the press-in design of the bearings used in the existing permanent magnet synchronous motors, the balls cannot be easily disassembled for cleaning or replacement, and the use effect is poor. In addition, the existing bearings do not have the effect of automatic oil replenishment when in use, which affects the rotation effect of the bearings after long-term use.

[0009] Based on the above situation, the present invention proposes a permanent magnet synchronous motor, which can effectively solve the above problems. Summary of the Invention

[0010] In view of the deficiencies in the prior art, the present invention provides a permanent magnet synchronous motor, which solves the defects and deficiencies in the prior art.

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0012] A permanent magnet synchronous motor comprises a mounting base, wherein a motor body is fixedly connected to an upper surface of the mounting base, an output shaft of the motor body is connected to a cooling shaft via a first coupling, and an end of the cooling shaft away from the first coupling is connected to a connecting shaft via a second coupling;

[0013] The upper surface of the mounting seat is fixedly connected to a bearing seat, and the connecting shaft passes through the bearing seat and is rotatably connected to the bearing seat;

[0014] A driver for the permanent magnet synchronous motor is fixedly connected to the upper surface of the mounting seat.

[0015] The permanent magnet synchronous motor of the present invention is cooled by a cooling shaft, isolating the motor body and the connecting shaft, avoiding mutual influence between the two, and having better cooling and heat dissipation effect; the use of the driver for the permanent magnet synchronous motor solves the problem that the wiring terminals on the existing driver have poor fixing effect on the connected circuit, and are easily affected by external forces during use and fall off or loosen, affecting normal use; the use of the bearing solves the problem that the bearings used in existing motors cannot conveniently disassemble and clean the balls and the bearings cannot achieve self-oil replenishment, which affects the rotation effect after long-term use.

[0016] Preferably, the connecting shaft passes through the bearing seat and is rotatably connected to the bearing seat through a bearing.

[0017] Preferably, the mounting assembly includes two slide rails fixedly connected to the lower surface of the mounting seat, a movable seat is slidably connected between the two slide rails, a locking bolt is threadedly connected through the surface of the movable seat, and support plates are fixedly connected at the four corners of the lower surface of the movable seat.

[0018] Preferably, a plurality of heat dissipation fins are provided through the surface of the cooling oil barrel.

[0019] Preferably, two groups of mounting brackets are fixedly connected to the upper surface of the mounting seat, and sleeve rings are connected to the two groups of mounting brackets, and the two sleeve rings are sleeved on the outer surface of the cooling shaft, and a cooling oil barrel is fixedly connected to the upper surface of the mounting seat, and a lifting shaft is passed through and slidably connected to the top of the cooling oil barrel, and a linkage assembly is provided between the top of the lifting shaft and the outer surface of the cooling shaft, and the bottom of the lifting shaft extends to the interior of the cooling oil barrel and is fixedly connected to a piston plate, and the piston plate slides with the inner wall of the cooling oil barrel, and a reset assembly is provided between the upper surface of the piston plate and the inner wall of the cooling oil barrel, a cooling oil flow assembly is provided between the cooling oil barrel and the two sleeve rings, and a mounting assembly is provided at the bottom of the mounting seat;

[0020] Preferably, the inner surface of the sleeve ring is fixedly connected to two symmetrically arranged isolation rings, the inner surface of the sleeve ring is provided with a plurality of first oil holes located between the two isolation rings, the outer surface of the cooling shaft is provided with two embedded grooves, the surfaces of the embedded grooves are provided with a plurality of second oil holes, the surfaces of the embedded grooves are fixedly connected to two symmetrically arranged sealing rings, the isolation rings extend into the embedded grooves and fit into the corresponding sealing rings;

[0021] Preferably, the linkage assembly includes a gear and a connecting rod, the gear is fixedly connected to the outer surface of the cooling shaft, the connecting rod is fixedly connected to the top of the lifting shaft, one side of the connecting rod is fixedly connected to a rack, the gear is meshed with the rack, and the gear is provided with a quarter-turn tooth;

[0022] Preferably, the reset assembly includes a telescopic rod fixedly connected to the upper surface of the piston plate, the free end of the telescopic rod is fixedly connected to the inner wall of the cooling oil barrel, the outer surface of the telescopic rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the upper surface of the piston plate and the inner wall of the cooling oil barrel;

[0023] Preferably, the cooling oil flow assembly includes a first pipe and a second pipe connected to the cooling oil barrel, the end of the first pipe is connected to the upper side of one of the sleeve rings, and the end of the second pipe is connected to the lower side of the other sleeve ring. The first pipe is provided with a first one-way valve, and the second pipe is provided with a second one-way valve.

[0024] Preferably, the driver for the permanent magnet synchronous motor includes a wiring assembly, which is placed on the driver body and includes a housing formed by assembling a bottom plate, a fixed plate, and a movable plate, and a wiring terminal placed in the housing, and an anti-drop claw is integrally provided on the metal wiring sleeve of the wiring terminal, and a resistance ring sleeve slidably provided on the metal wiring sleeve abuts against one end of the spring, and the other end of the spring abuts against the base;

[0025] Preferably, one end of the connecting bolt inserted into the bolt sleeve on the metal wiring sleeve is threadedly connected to the connecting seat embedded in the bottom plate through the through hole provided in the base, the bolt sleeve is integrally provided on the metal wiring sleeve, and the edge of the base is bent toward the metal wiring sleeve to form a blocking lip plate, and one end of the spring is placed in the groove formed between the blocking lip plate and the outer wall of the metal wiring sleeve, and the other end of the spring is placed in the annular recessed groove provided on the interference ring sleeve;

[0026] Preferably, an anti-slip groove is provided on the outer side wall of the abutment ring sleeve, and an inner side wall of the abutment ring sleeve is provided with an arc surface toward one end of the anti-slip claw;

[0027] Preferably, the anti-dropout claws are distributed in a circular array on the metal wiring sleeve, deformation grooves are formed between each pair of the anti-dropout claws, and the ends of the anti-dropout claws are bent toward the metal wiring sleeve, and anti-slip teeth are provided at the ends, and the bent portions of the anti-dropout claws are inclined toward the outside of the metal wiring sleeve;

[0028] Preferably, the ends of the side panels integrally provided on the bottom plate are matched with the buckle grooves provided on both sides of the fixed plate through buckles, and the fixed plate is L-shaped, a wire threading groove is provided at the position of the fixed plate facing the wiring terminal, and a blocking plate is fixedly connected to the position of the wire threading groove on the movable plate, and the clamping groove provided at the edge of the blocking plate is clamped at the edge of the wire threading groove;

[0029] Preferably, the bearing comprises an outer ring, a plug-in block, a bolt, a ball and an inner ring, and is characterized in that: the plug-in block is slidably plugged into the outer ring, the plug-in block is cooperatively connected with the bolt, the bolt is cooperatively connected to the outer ring, the inner ring of the outer ring is cooperatively provided with the inner ring, and the ball is cooperatively provided between the outer ring and the inner ring;

[0030] Preferably, a first rotation groove is provided on the inner wall of the outer ring, a plug-in groove is provided on the outer ring, a solid part is provided at the plug-in groove, and connection holes are symmetrically provided on the solid part;

[0031] Preferably, the plug-in block is slidably inserted into the plug-in slot, and a filling groove is provided on the inner wall of the plug-in block, and the filling groove is matched with the first rotating groove. Plug-in strips are integrally formed on both sides of the plug-in block, and the plug-in strips are slidably inserted into the plug-in slot. The plug-in block is arranged to abut against the solid part, and a threaded hole is provided on the plug-in block to match the connecting hole.

[0032] Preferably, a through-type notch is provided at the position of the blocking plate facing the terminal, a support rod facing the terminal is fixedly connected to the notch, and an anti-slip arc plate is fixedly connected to the end of the support rod, and anti-slip convex patterns are provided on the inner side wall of the anti-slip arc plate.

[0033] Preferably, a mounting seat is provided on the driver body, a heat dissipation fin is provided on the mounting seat, and bolt-through mounting openings are provided on both sides of the mounting seat.

[0034] Preferably, the bolt consists of a stud and a cross seat, the stud passes through the connecting hole and is threadedly connected in the threaded hole, and one end of the stud is integrally formed with a cross seat.

[0035] Preferably, a plurality of balls are arranged between the outer ring and the inner ring, and the plurality of balls are connected with each other through a distance control ring.

[0036] Preferably, a second rotation groove is provided on the outer wall of the inner ring, an oil hole is provided in a ring shape at the location of the second rotation groove, an oil storage tank is provided in the inner ring, a filling port is provided on the inner wall of the inner ring, and a rubber plug is provided at the filling port location.

[0037] The present invention also provides a permanent magnet synchronous motor drive control method, comprising the following steps:

[0038] S1. Electrically connect the wires of the motor, external power supply, and control terminal to the wiring assembly of the motor driver body, and connect the three together in series;

[0039] S2. After receiving the control command from the control terminal, the motor driver controls the external power supply to supply power to the motor, and the motor runs according to the control command.

[0040] The present invention provides a permanent magnet synchronous motor having the following beneficial effects:

[0041] 1. The permanent magnet synchronous motor of the present invention is cooled by a cooling shaft, isolating the motor body and the connecting shaft to avoid mutual influence between the two, and having better cooling and heat dissipation effect; the use of the driver for the permanent magnet synchronous motor solves the problem that the wiring terminals on the existing driver have poor fixing effect on the connected circuit, and are easily affected by external forces during use and fall off or loosen, affecting normal use; the use of the bearing solves the problem that the bearings used in existing motors cannot conveniently disassemble and clean the balls and the bearings cannot achieve self-oil replenishment, which affects the rotation effect after long-term use.

[0042] 2. The cooling shaft of the permanent magnet synchronous motor of the present invention rotates with the gear during the rotation process. When the gear is engaged with the rack, the rack moves downward with the lifting shaft through the connecting rod, and the lifting shaft moves downward with the piston plate. When the piston plate moves downward, the cooling oil inside the cooling oil barrel is squeezed, so that the cooling oil enters one of the sleeve rings through the first pipe, and then the cooling oil enters the cooling shaft through the cooperation of multiple first oil holes and multiple second oil holes to cool the cooling shaft, thereby isolating the motor body and the connecting shaft to avoid mutual influence between the two.

[0043] 3. In the permanent magnet synchronous motor of the present invention, when the gear is disengaged from the rack, the piston plate moves upward through the action of the reset assembly, thereby drawing the cooling oil in the second pipe connected to another sleeve ring into the cooling oil barrel. How can the cooling oil inside the cooling shaft be kept in a flowing state to achieve a better heat dissipation effect?

[0044] 4. In the permanent magnet synchronous motor of the present invention, the wiring terminals used for wiring are protected by a detachable shell, which effectively protects the wiring parts. The shell is provided with a clamping member to prevent the line from being pulled off. Under the action of tension, the support rod and the anti-slip arc plate will tightly contact the line. The greater the tension, the tighter the contact, which effectively limits the position and prevents the line from falling off. The line connection is highly stable and convenient for stable use. At the same time, the wiring terminals do not need to use auxiliary tools to tighten the bolts during the wiring process. You only need to push the contact ring by hand to plug or remove the line. The operation is simple and convenient, and it is easy to use.

[0045] 5. The bearing of the permanent magnet synchronous motor of the present invention is designed with a plug-in block and a bolt. The plug-in block can be conveniently connected to the inside of the plug-in slot provided on the outer ring by the bolt. When the ball is installed or removed, the plug-in block can be removed and the ball can be installed from the plug-in slot into the space between the outer ring and the inner ring, thereby improving the convenience of installation and disassembly of the bearing. Through the design of the oil storage tank and the oil hole, when the inner ring rotates, the lubricating oil can be applied to the ball by centrifugal force, thereby achieving an autonomous oil replenishment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a first perspective stereogram of the present invention;

[0047] Figure 2 This is a second perspective stereogram of the present invention;

[0048] Figure 3 This is a schematic structural diagram of the cooling shaft of the present invention;

[0049] Figure 4 For the present invention Figure 3 -A's local magnification intention;

[0050] Figure 5 This is a schematic structural diagram of the sleeve ring of the present invention;

[0051] Figure 6 This is a schematic diagram of the internal structure of the cooling oil barrel of the present invention;

[0052] Figure 7 A schematic structural diagram of a driver for the permanent magnet synchronous motor according to the present invention;

[0053] Figure 8 An exploded view of the wiring assembly of the present invention;

[0054] Figure 9 It is a structural schematic diagram of the movable plate of the present invention;

[0055] Figure 10 This is an exploded view of the wiring terminal of the present invention;

[0056] Figure 11 is a cross-sectional view of the metal wiring sleeve of the present invention;

[0057] Figure 12 Schematic diagram of the overall structure of the bearing of the present invention;

[0058] Figure 13 This is a schematic diagram of the outer ring structure of the bearing of the present invention;

[0059] Figure 14 This is a schematic diagram of the plug-in block structure of the bearing according to the present invention;

[0060] Figure 15 This is a schematic diagram of the bolt structure of the bearing of the present invention;

[0061] Figure 16 This is a schematic diagram of the inner ring structure of the bearing of the present invention.

[0062] In the figure: 1. Mounting seat; 2. Motor body; 3. First coupling; 4. Cooling shaft; 5. Second coupling; 6. Connecting shaft; 7. Bearing seat; 8. Mounting frame; 9. Socket ring; 10. Gear; 11. Isolation ring; 12. First oil hole; 13. Embedded groove; 14. Second oil hole; 15. Sealing ring; 16. Cooling oil barrel; 17. First pipeline; 18. Second pipeline; 19. First one-way valve; 20. Second one-way valve; 21. Lifting shaft; 22. Connecting rod; 23. Rack; 24. Piston plate; 25. Telescopic rod; 26. Spring; 27. Heat dissipation fin; 28. Slide rail; 29. ​​Movable seat; 30. Locking bolt; 31. Support plate; D1. Driver body; D101. Mounting seat; D102. Heat dissipation fin plate; D2. Wiring assembly; D201. Base plate; D2011. Connecting seat; D2012 , side panel; D2013, buckle; D202, fixed plate; D2021, buckle slot; D2022, wire duct; D203, movable plate; D2031, blocking plate; D2032, slot; D2033, support rod; D2034, anti-slip arc plate; D204, terminal block; D2041, metal wiring sleeve; D2042, anti-drop claw; D2043, connecting bolt; D2044, base; D2045, spring; D2046, interference ring; D2047, bolt sleeve; D2048, anti-slip tooth; B1, outer ring; B101, first rotation groove; B102, plug-in slot; B103, solid portion; B104, connecting hole; B2, plug-in block; B201, filling slot; B202, plug-in strip; B203, threaded hole; B3, bolt; B301, stud; B302, cross seat;

[0063] B4, ball bearing; B401, distance control ring; B5, inner ring; B501, second rotating groove; B502, oil hole; B503, oil storage tank; B504, filling port; B505, rubber plug. DETAILED DESCRIPTION

[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] Example:

[0066] like Figure 1-16 As shown, an embodiment of the present invention provides a permanent magnet synchronous motor, including a mounting base, the upper surface of which is fixedly connected to a motor body, the output shaft of the motor body being connected to a cooling shaft via a first coupling, and the end of the cooling shaft away from the first coupling being connected to a connecting shaft via a second coupling;

[0067] In practical applications, the connecting shaft is used to connect the structure / structure / device to be driven, so that it rotates / works under the drive of the permanent magnet synchronous motor of the present invention.

[0068] The upper surface of the mounting seat is fixedly connected to a bearing seat, and the connecting shaft passes through the bearing seat and is rotatably connected to the bearing seat;

[0069] A driver for the permanent magnet synchronous motor is fixedly connected to the upper surface of the mounting seat.

[0070] Furthermore, in another embodiment, the connecting shaft passes through the bearing seat and is rotatably connected to the bearing seat via a bearing.

[0071] Furthermore, in another embodiment, a bearing seat is fixedly connected to the upper surface of the mounting seat, and the connecting shaft passes through the bearing seat and is rotatably connected thereto. The bearing seat provided allows the rotation of the connecting shaft to be more stable. When the motor main body is working, the output shaft of the motor main body rotates with the cooling shaft through the first coupling, and the cooling shaft rotates with the connecting shaft through the second coupling. The end of the connecting shaft is connected to the transmission part of the external equipment. Two sets of mounting brackets are fixedly connected to the upper surface of the mounting seat, and both sets of mounting brackets are connected with a sleeve ring. The two sleeve rings are both sleeved on the outer surface of the cooling shaft. The inner surface of the sleeve ring is fixedly connected to two symmetrically arranged isolation rings. A plurality of first oil holes are provided on the inner surface of the sleeve ring and located between the two isolation rings. Two embedding grooves are provided on the outer surface of the cooling shaft. A plurality of second oil holes are provided on the surface of the embedding groove. Two symmetrically arranged sealing rings are fixedly connected to the surface of the embedding groove. The isolation ring extends into the embedding groove and fits with the corresponding sealing ring. The purpose of this setting is to enable relative rotation between the sleeve ring and the cooling shaft to ensure the sealing between the two on the basis of the rotation of the cooling shaft;

[0072] Furthermore, in another embodiment, a cooling oil barrel is fixedly connected to the upper surface of the mounting base, and a plurality of heat dissipation fins are provided on the surface of the cooling oil barrel to cool the cooling oil and maintain a good heat dissipation state. A lifting shaft is passed through and slidably connected to the top of the cooling oil barrel, and a linkage assembly is provided between the top of the lifting shaft and the outer surface of the cooling shaft. The linkage assembly includes a gear and a connecting rod. The gear is fixedly connected to the outer surface of the cooling shaft, and the connecting rod is fixedly connected to the top of the lifting shaft. A rack is fixedly connected to one side of the connecting rod. The gear is meshed with the rack, and the gear is provided with a quarter-turn tooth.

[0073] Furthermore, in another embodiment, the bottom of the lifting shaft extends to the interior of the cooling oil barrel and is fixedly connected to a piston plate, the piston plate slides with the inner wall of the cooling oil barrel, a reset assembly is provided between the upper surface of the piston plate and the inner wall of the cooling oil barrel, the reset assembly includes a telescopic rod fixedly connected to the upper surface of the piston plate, the free end of the telescopic rod is fixedly connected to the inner wall of the cooling oil barrel, the outer surface of the telescopic rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the upper surface of the piston plate and the inner wall of the cooling oil barrel;

[0074] Furthermore, in another embodiment, a cooling oil flow component is provided between the cooling oil barrel and the two sleeve rings. The cooling oil flow component includes a first pipe and a second pipe connected to the cooling oil barrel. The end of the first pipe is connected to the top of one of the sleeve rings, and the end of the second pipe is connected to the bottom of the other sleeve ring. A first one-way valve is provided on the first pipe, and a second one-way valve is provided on the second pipe. The first one-way valve and the second one-way valve are provided so that the cooling oil can only flow in one direction. When the cooling shaft rotates, it rotates with the gear. When the gear is engaged with the rack, the rack moves downward with the lifting shaft through the connecting rod. The lifting shaft moves the piston plate downward. As the piston plate moves downward, it squeezes the cooling oil inside the cooling oil barrel, allowing the cooling oil to enter one of the sleeve rings through the first pipe. Then, through the cooperation of the multiple first oil holes and the multiple second oil holes, the cooling oil enters the cooling shaft, cooling the cooling shaft and isolating the motor body from the connecting shaft. When the gear and rack disengage, the piston plate moves upward through the action of the reset assembly, thereby drawing the cooling oil in the second pipe connected to the other sleeve ring into the cooling oil barrel. How can the cooling oil inside the cooling shaft be kept in a flowing state to achieve a better heat dissipation effect?

[0075] Furthermore, in another embodiment, a mounting assembly is provided at the bottom of the mounting seat, and the mounting assembly includes two slide rails fixedly connected to the lower surface of the mounting seat, and a movable seat is slidably connected between the two slide rails. A locking bolt is threaded through the surface of the movable seat, and the mounting seat can slide by loosening the locking bolt to adjust the horizontal position of the motor body. Support plates are fixedly connected to the four corners of the lower surface of the movable seat, and the mounting seat can be supported and installed by the provided support plates.

[0076] Further, in another embodiment, referring to Figure 7 、 Figure 8 、 Figure 10 and Figure 11As shown, the driver for the permanent magnet synchronous motor includes a wiring assembly, which is arranged on the driver body, and a wiring mechanism that can quickly complete the line connection is formed on the driver, so as to realize a fast and effective connection between the driver and the motor and the control terminal, and at the same time, it can also avoid the problem of the connection line falling off during use, ensure stable operation and use, and also improve the convenience of the line connection operation during use, and realize fast wiring operation, and the wiring assembly includes a shell formed by assembling a bottom plate, a fixed plate and a movable plate, and the shell is used to wrap and protect the wiring terminals for wiring to avoid external influences and ensure stable use. At the same time, the wiring parts can be protected after the line is connected, and the stability of the line connection is improved. The wiring terminals arranged in the shell are used for stable connection between the line and the driver, and the metal wiring sleeve of the wiring terminal is integrally provided with an anti-drop claw, which resists the contact after the line is connected. When the line needs to be removed, push the contact ring to move, so that the anti-dropping claw loosens and cancels the limiting constraint on the line, and the line can be directly pulled out of the metal wiring sleeve.

[0077] Further, in another embodiment, referring to Figure 8 、 Figure 10 and Figure 11As shown, one end of the connecting bolt inserted in the bolt sleeve on the metal wiring sleeve passes through the through-hole opened in the base and is threadedly connected to the connecting seat embedded in the bottom plate, so that the metal wiring sleeve is stably connected to the protective shell, and at the same time, a connecting bolt is provided to realize the electrical connection between the metal wiring sleeve and the conductor on the driver body, thereby stably connecting the line to the driver. The bolt sleeve is integrally arranged on the metal wiring sleeve, which is convenient for the stable installation of the connecting bolt, and the edge of the base is bent toward the metal wiring sleeve to form a retaining lip plate, and one end of the spring is placed in the groove body formed between the retaining lip plate and the outer wall of the metal wiring sleeve, so as to improve the stability of the spring at this end position. At the same time, the base also facilitates to improve the stability of the installation of the entire terminal, and the other end of the spring is placed in the annular recessed groove opened on the interference ring sleeve, so as to improve the matching connection between the two. The anti-slip claw is provided at the end portion, which is convenient for improving the stability of the limiting constraint, and the bent portion of the anti-slip claw is inclined toward the outside of the metal wiring sleeve to ensure that it can be deformed inwards when the friction ring sleeve is pushed.

[0078] Further, in another embodiment, referring to Figure 7 、 Figure 8 and Figure 9The fixing plate is L-shaped, and a wire threading slot is provided at the position of the fixing plate opposite to the wiring terminal, which is convenient for introducing the line to be connected into the shell, and then stably connected to the wiring terminal. A blocking plate is fixedly connected to the corresponding wire threading slot position on the movable plate, and the blocking slot provided at the edge of the blocking plate is engaged with the edge of the wire threading slot, ensuring that the blocking plate is stably connected to the fixed plate by using the blocking plate, so that the bottom plate, the fixed plate and the movable plate are spliced ​​together to form a shell for protecting the wiring terminal, which is effectively protected. A through-type notch is provided at the position of the blocking plate opposite to the wiring terminal, ensuring that the line can It smoothly passes through the blocking plate on the movable plate and is connected to the terminal in the shell. A support rod facing the terminal is fixedly connected to the notch, and an anti-slip arc plate is fixedly connected to the end of the support rod. Anti-slip convex grooves are set on the inner side wall of the anti-slip arc plate. The support rod is elastic. In the initial state, the anti-slip arc plates are in contact with each other. During the line installation process, the notch is passed through, and the support rod is pulled to make the anti-slip arc plate contact the line and clamp it. The friction between the contact surfaces of the two is increased by the anti-slip convex grooves. Since the support rod is tilted toward the central axis of the terminal, an inclined support is formed on the line. When the line is pulled, the anti-slip arc plate will tightly contact the line under the action of the line pulling. The greater the pulling force, the tighter the contact, which effectively limits the position and prevents the line from falling off.

[0079] Further, in another embodiment, referring to Figure 7 As shown, the driver body is provided with a mounting seat, and a heat dissipation fin is provided on the mounting seat, and bolt-through mounting openings are provided on both sides of the mounting seat, so that the entire driver can be stably mounted in the use position using the mounting seat. At the same time, the gap at the contact point between the two is filled with thermal conductive silicone sheet to improve the thermal conductivity and transfer the heat generated by the driver operation to the heat dissipation fin of the mounting seat for dissipation.

[0080] Further, in another embodiment, referring to Figure 12-16As shown, the bearing includes an outer ring, a plug-in block, a bolt, a ball and an inner ring. The bearing for the permanent magnet synchronous motor designed in this scheme can be easily removed from between the outer ring and the inner ring through the matching design when the bearing for the permanent magnet synchronous motor is disassembled and cleaned, thereby improving the convenience of later maintenance. The design of the inner ring can make the bearing have the effect of self-replenishing oil, and can ensure the lubrication and rolling effect of the ball between the outer ring and the inner ring during long-term use. A plug-in block is slidably plugged into the outer ring, and the plug-in block is matched with the bolt for connection. The bolt is matched with the outer ring, and the inner ring of the outer ring is matched with the inner ring. The balls are matched between the outer ring and the inner ring. When the bearing of this scheme needs to be disassembled and cleaned, or when the internal worn balls are replaced, the bolts are removed by using a tool, so that the plug-in block is slidably plugged into the plug-in slot, and the plug-in block is taken out from the plug-in slot. At this time, the balls can be taken out one by one from between the outer ring and the inner ring, thereby improving the ball The disassembly is convenient. By disassembling the balls, the various components of the bearing of this scheme are deeply cleaned to improve the cleaning effect. After cleaning, the balls can be easily reinstalled into the area between the outer ring and the inner ring, thereby improving the use effect of the bearing disassembly and installation. When the bearing of this scheme is in use, the rubber plug is taken out from the filling port, and then the lubricating oil is filled into the oil storage tank, and then the rubber plug is inserted into the filling port. When the inner ring is in the permanent magnet synchronous motor rotor movement, the centrifugal force can be used to throw the lubricating oil filled in the oil storage tank through the oil hole to the ball, thereby achieving the effect of lubricating the ball. It is explained here that the diameter of the oil hole is small, the lubricating oil outflow is small, and the oil hole does not affect the rotation efficiency of the ball, thereby meeting the use requirements. The overall design structure of the device is simple and reasonable, which meets the installation and use of the permanent magnet synchronous motor with electronic commutation, improves the convenience of bearing disassembly and installation, and makes the bearing of this scheme have the use effect of self-replenishing oil, thereby improving transmission efficiency.

[0081] Further, in another embodiment, referring to Figure 13 As shown, the inner wall of the outer ring is provided with a first rotation groove, the outer ring is provided with a plug-in groove, a solid part is provided at the plug-in groove, and the solid part is symmetrically provided with connecting holes. The design of the outer ring meets the use requirements of the bearing and ensures the use effect.

[0082] Further, in another embodiment, referring to Figure 14 As shown, the plug-in block is slidably plugged into the plug-in slot, and a filling groove is provided on the inner wall of the plug-in block, which is matched with the first rotating groove. Plug strips are integrally formed on both sides of the plug-in block, and the plug strips are slidably plugged into the plug-in slot. The plug-in block is set in contact with the solid part, and a threaded hole is provided on the plug-in block to match the connecting hole. The design of the plug-in block can make it easy to install and disassemble the ball between the outer ring and the inner ring, thereby improving the use effect.

[0083] Further, in another embodiment, referring to Figure 15 As shown, the bolt consists of a stud and a cross seat. The stud passes through the connecting hole and is threaded into the threaded hole. One end of the stud is integrally formed with a cross seat. The design of the bolt meets the use requirements. Through the design of the bolt, the plug-in block can be firmly plugged into the plug-in slot to ensure the overall connection strength of the bearing.

[0084] Further, in another embodiment, referring to Figure 12 As shown, a plurality of balls are arranged between the outer ring and the inner ring, and the plurality of balls are connected by a distance control ring. The distance control ring is used to control the distance between each ball to ensure the rotation effect.

[0085] Further, in another embodiment, referring to Figure 16 As shown, a second rotating groove is provided on the outer wall of the inner ring, an oil hole is provided in a ring shape at the position of the second rotating groove, an oil storage tank is provided in the inner ring, a filling port is provided on the inner wall of the inner ring, and a rubber plug is provided at the filling port. The design of the inner ring can apply lubricating oil to the ball through centrifugal force during rotation, thereby improving the lubrication effect of the ball.

[0086] The cooling shaft of the permanent magnet synchronous motor of the present invention rotates with the gear during the rotation process. When the gear is engaged with the rack, the rack moves downward with the lifting shaft through the connecting rod, and the lifting shaft moves downward with the piston plate. When the piston plate moves downward, the cooling oil inside the cooling oil barrel is squeezed, so that the cooling oil enters one of the sleeve rings through the first pipe, and then the cooling oil enters the cooling shaft through the cooperation of multiple first oil holes and multiple second oil holes, thereby cooling the cooling shaft, isolating the motor body and the connecting shaft to avoid mutual influence between the two.

[0087] In the driver for the permanent magnet synchronous motor of the present invention, a detachable shell is used to effectively protect the wiring parts. A clamping member is provided on the shell to prevent the line from falling off due to pulling. Under the action of tension, the support rod and the anti-slip arc plate will tightly contact the line. The greater the tension, the tighter the contact, which effectively limits the position and prevents the line from falling off. The line connection is highly stable and convenient for stable use. At the same time, the wiring terminals do not require the use of auxiliary tools during the wiring process, and the operation is simple, convenient and easy to use.

[0088] The bearing of the present invention is designed with a plug-in block and a bolt. The plug-in block can be conveniently connected to the inside of the plug-in groove provided on the outer ring through the bolt. When the ball is installed and removed, the plug-in block can be removed and the ball can be installed from the plug-in groove into the space between the outer ring and the inner ring, thereby improving the convenience of installation and disassembly of the bearing. Through the design of the oil storage tank and the oil hole, when the inner ring rotates, the lubricating oil can be applied to the ball by centrifugal force, thereby achieving an autonomous oil replenishment effect.

[0089] The working principle of the permanent magnet synchronous motor according to one embodiment of the present invention is as follows:

[0090] When the motor body is working, the output shaft of the motor body rotates with the cooling shaft through the first coupling, and the cooling shaft rotates with the connecting shaft through the second coupling, and the end of the connecting shaft is connected to the transmission part of the external device;

[0091] When the cooling shaft rotates, it rotates with the gear. When the gear is engaged with the rack, the rack moves downward with the lifting shaft through the connecting rod, and the lifting shaft moves downward with the piston plate. When the piston plate moves downward, the cooling oil inside the cooling oil barrel is squeezed, so that the cooling oil enters one of the sleeve rings through the first pipe, and then enters the cooling shaft through the cooperation of multiple first oil holes and multiple second oil holes, thereby cooling the cooling shaft and isolating the motor body from the connecting shaft. When the gear is disengaged from the rack, the piston plate moves upward through the action of the reset assembly, thereby drawing the cooling oil in the second pipe connected to the other sleeve ring into the cooling oil barrel. This ensures that the cooling oil inside the cooling shaft is in a flowing state, thereby achieving better heat dissipation effect.

[0092] The present invention also provides a permanent magnet synchronous motor drive control method, comprising the following steps:

[0093] S1. Electrically connect the wires of the motor, external power supply, and control terminal to the wiring assembly of the motor driver body, and connect the three together in series;

[0094] S2. After receiving the control command from the control terminal, the motor driver controls the external power supply to supply power to the motor, and the motor runs according to the control command.

[0095] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A permanent magnet synchronous motor, characterized in that: The mounting base (1) comprises a motor body (2) fixedly connected to the upper surface of the mounting base (1); the output shaft of the motor body (2) is connected to a cooling shaft (4) via a first coupling (3); and the end of the cooling shaft (4) away from the first coupling (3) is connected to a connecting shaft (6) via a second coupling (5); The upper surface of the mounting seat (1) is fixedly connected to a bearing seat (7), and the connecting shaft (6) passes through the bearing seat (7) and is rotatably connected to the bearing seat (7); A driver (D) for a permanent magnet synchronous motor is fixedly connected to the upper surface of the mounting seat (1); The connecting shaft (6) passes through the bearing seat (7) and is rotatably connected to the bearing seat (7) via a bearing (B); The upper surface of the mounting seat (1) is fixedly connected to two groups of mounting frames (8), and the two groups of mounting frames (8) are connected to sleeve rings (9), and the two sleeve rings (9) are sleeved on the outer surface of the cooling shaft (4). The upper surface of the mounting seat (1) is fixedly connected to a cooling oil barrel (16), and the top of the cooling oil barrel (16) is penetrated and slidably connected to a lifting shaft (21), and a linkage component is provided between the top of the lifting shaft (21) and the outer surface of the cooling shaft (4), and the bottom of the lifting shaft (21) extends to the inside of the cooling oil barrel (16) and is fixedly connected to a piston plate (24), and the piston plate (24) slides with the inner wall of the cooling oil barrel (16), and a reset component is provided between the upper surface of the piston plate (24) and the inner wall of the cooling oil barrel (16), and a cooling oil flow component is provided between the cooling oil barrel (16) and the two sleeve rings (9), and a mounting component is provided at the bottom of the mounting seat (1); The inner surface of the sleeve ring (9) is fixedly connected to two symmetrically arranged isolation rings (11), and a plurality of first oil holes (12) are provided on the inner surface of the sleeve ring (9) and located between the two isolation rings (11). The outer surface of the cooling shaft (4) is provided with two embedded grooves (13), and a plurality of second oil holes (14) are provided on the surface of the embedded grooves (13). The surface of the embedded grooves (13) is fixedly connected to two symmetrically arranged sealing rings (15), and the isolation ring (11) extends into the embedded grooves (13) and fits with the corresponding sealing rings (15); The linkage assembly includes a gear (10) and a connecting rod (22), wherein the gear (10) is fixedly connected to the outer surface of the cooling shaft (4), the connecting rod (22) is fixedly connected to the top of the lifting shaft (21), a rack (23) is fixedly connected to one side of the connecting rod (22), the gear (10) is meshed with the rack (23), and the gear (10) is provided with a quarter-turn tooth. The reset assembly includes a telescopic rod (25) fixedly connected to the upper surface of the piston plate (24), the free end of the telescopic rod (25) is fixedly connected to the inner wall of the cooling oil barrel (16), the outer surface of the telescopic rod (25) is provided with a spring (26), and the two ends of the spring (26) are respectively fixedly connected to the upper surface of the piston plate (24) and the inner wall of the cooling oil barrel (16); The cooling oil flow assembly comprises a first pipe (17) and a second pipe (18) connected to the cooling oil barrel (16); the end of the first pipe (17) is connected to the upper side of one of the sleeve rings (9); the end of the second pipe (18) is connected to the lower side of the other sleeve ring (9); a first one-way valve (19) is provided on the first pipe (17); and a second one-way valve (20) is provided on the second pipe (18); The driver (D) for the permanent magnet synchronous motor includes a wiring assembly (D2), the wiring assembly (D2) being arranged on the driver body (D1), and the wiring assembly (D2) including a housing formed by assembling a base plate (D201), a fixed plate (D202), and a movable plate (D203), and a wiring terminal (D204) arranged in the housing, wherein an anti-drop claw (D2042) is integrally provided on a metal wiring sleeve (D2041) of the wiring terminal (D204), a contact ring (D2046) slidably sleeved on the metal wiring sleeve (D2041) contacts one end of a spring (D2045), and the other end of the spring (D2045) contacts the base (D2044); One end of a connecting bolt (D2043) inserted into a bolt sleeve (D2047) on the metal wiring sleeve (D2041) is threadedly connected to a connecting seat (D2011) embedded on the bottom plate (D201) through a through-hole provided on the base (D2044); the bolt sleeve (D2047) is integrally provided on the metal wiring sleeve (D2041); an edge of the base (D2044) is bent toward the metal wiring sleeve (D2041) to form a retaining lip plate; one end of a spring (D2045) is disposed in a groove formed between the retaining lip plate and the outer wall of the metal wiring sleeve (D2041); and the other end of the spring (D2045) is disposed in an annular recessed groove provided on the abutting ring sleeve (D2046); An anti-slip groove is provided on the outer wall of the abutting ring sleeve (D2046), and an inner wall of the abutting ring sleeve (D2046) is provided with an arc surface at one end thereof facing the anti-slip claw (D2042); The anti-slip claws (D2042) are distributed in a ring array on the metal wiring sleeve (D2041), deformation grooves are formed between the anti-slip claws (D2042), and the end portions of the anti-slip claws (D2042) are bent toward the metal wiring sleeve (D2041), and anti-slip teeth (D2048) are provided at the end portions, and the bent portions of the anti-slip claws (D2042) are inclined toward the outside of the metal wiring sleeve (D2041); The ends of the side plates (D2012) integrally provided on the bottom plate (D201) are arranged in cooperation with the buckle grooves (D2021) provided on both sides of the fixed plate (D202) via buckles (D2013), and the fixed plate (D202) is L-shaped. A threading groove (D2022) is provided on the fixed plate (D202) at a position directly opposite the wiring terminal (D204), and a blocking plate (D2031) is fixedly connected to a position corresponding to the threading groove (D2022) on the movable plate (D203). The clamping groove (D2032) provided at the edge of the blocking plate (D2031) is clamped to the edge of the threading groove (D2022). The bearing (B) comprises an outer ring (B1), a plug-in block (B2), a bolt (B3), a ball (B4) and an inner ring (B5); the plug-in block (B2) is slidably plugged into the outer ring (B1); the plug-in block (B2) is cooperatively connected to the bolt (B3); the bolt (B3) is cooperatively connected to the outer ring (B1); the inner ring of the outer ring (B1) is cooperatively provided with the inner ring (B5); and the ball (B4) is cooperatively provided between the outer ring (B1) and the inner ring (B5); A first rotation groove (B101) is provided on the inner wall of the outer ring (B1), a plug-in groove (B102) is provided on the outer ring (B1), a solid portion (B103) is provided at the plug-in groove (B102), and connection holes (B104) are symmetrically provided on the solid portion (B103); The plug-in block (B2) is slidably plugged into the plug-in slot (B102); a filling slot (B201) is provided on the inner wall of the plug-in block (B2); the filling slot (B201) is matched with the first rotation slot (B101); plug-in strips (B202) are integrally formed on both sides of the plug-in block (B2); the plug-in strips (B202) are slidably plugged into the plug-in slot (B102); the plug-in block (B2) is abutted against the solid portion (B103); and a threaded hole (B203) is provided on the plug-in block (B2) to match the connecting hole (B104).

2. A permanent magnet synchronous motor according to claim 1, characterized in that: The mounting assembly comprises two slide rails (28) fixedly connected to the lower surface of the mounting seat (1), a movable seat (29) is slidably connected between the two slide rails (28), a locking bolt (30) is threadedly connected through the surface of the movable seat (29), and support plates (31) are fixedly connected at the four corners of the lower surface of the movable seat (29).

3. The permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of heat dissipation fins (27) are provided through the surface of the cooling oil barrel (16).

4. The permanent magnet synchronous motor according to claim 1, characterized in that: The blocking plate (D2031) is provided with a through-notch at a position directly opposite the connecting terminal (D204); a support rod (D2033) facing the connecting terminal (D204) is fixedly connected to the notch; an anti-slip arc plate (D2034) is fixedly connected to the end of the support rod (D2033); and anti-slip convex patterns are provided on the inner side wall of the anti-slip arc plate (D2034).

5. The permanent magnet synchronous motor according to claim 1, characterized in that: The driver body (D1) is provided with a placement seat (D101), a heat dissipation fin plate (D102) is provided on the placement seat (D101), and bolt-through placement openings are provided on both sides of the placement seat (D101).

6. The permanent magnet synchronous motor according to claim 1, characterized in that: The bolt (B3) consists of a stud (B301) and a cross seat (B302); the stud (B301) passes through the connection hole (B104) and is threadedly connected to the threaded hole (B203); one end of the stud (B301) is integrally formed with the cross seat (B302).

7. The permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of balls (B4) are arranged between the outer ring (B1) and the inner ring (B5), and the plurality of balls (B4) are connected and arranged through a distance control ring (B401).

8. The permanent magnet synchronous motor according to claim 1, characterized in that: A second rotation groove (B501) is provided on the outer wall of the inner ring (B5), an oil hole (B502) is provided in a ring shape at the location of the second rotation groove (B501), an oil storage tank (B503) is provided in the inner ring (B5), a filling port (B504) is provided on the inner wall of the inner ring (B5), and a rubber plug (B505) is provided at the location of the filling port (B504).

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