Permanent magnet synchronous servo motor and shell assembly thereof

Abstract

The invention belongs to the field of permanent magnet motors, and particularly relates to a permanent magnet synchronous servo motor and a shell assembly thereof. The rear side of the output shaft is fixedly connected with a rotor iron core, the outer side of the rotor iron core is fixedly connected with four groups of permanent magnets, the four groups of permanent magnets are uniformly arranged on the outer side of the rotor iron core in a circumferential array shape, the outer side of the rotor iron core is sleeved with a stator iron core, and the stator iron core is fixedly connected with the rotor iron core. A winding is wound on the stator iron core; the end part of the rotor core is provided with a heat dissipation cleaning structure, the heat dissipation cleaning structure comprises a front fan blade, and the front fan blade is fixedly connected to the front end of the rotor core; the problems that although an existing permanent magnet motor replaces a low-torque working condition through output high torque, heat is still inevitably generated in the working process of the permanent magnet motor, and if the heat cannot be timely discharged to the outside of the permanent magnet motor, the permanent magnet motor is burnt out due to working under the high-temperature working condition for a long time are solved.

Description

Technical Field

[0001] The invention relates to the field of permanent magnet motors, in particular to a permanent magnet synchronous servo motor and a housing component thereof. Background Art

[0002] Permanent magnet motor is a motor that uses permanent magnets to provide excitation. Compared with traditional brushed and brushless motors, it further reduces the structural complexity of the motor, and also reduces the processing and assembly costs compared with traditional brushed or brushless motors. It also eliminates the collector rings and brushes that are prone to problems, thereby improving the reliability of the motor's operation. Because permanent magnet motors do not require excitation current and have no excitation loss, they improve the efficiency and power density of the motor and are a high-performance power device. Permanent magnet synchronous servo motors are a type of AC permanent magnet servo motors. In the field of small and medium-capacity high-precision transmission, permanent magnet synchronous servo motors are widely used. Due to the inherent characteristics of permanent magnet materials, it no longer requires external energy to establish a strong permanent magnetic field in the space around it. This can both simplify the motor structure and save energy.

[0003] The existing permanent magnet motor can specifically refer to the Chinese invention patent with application number: CN202310489714.2, which discloses a ground permanent magnet motor in detail, including legs, etc.; the legs are fixedly connected to the motor housing, the motor housing is provided with a stator, the stator is provided with a rotor, the rotor is fixedly connected to the motor shaft, the motor shaft is fixedly connected to a fixing ring located in the motor housing, the fixing ring is provided with a sliding cavity distributed at equal intervals in the circumferential direction, the sliding cavity is slidably connected with a sliding rod, the sliding rod is fixedly connected with a friction block, the motor housing is rotatably connected with an output shaft, the output shaft is provided with a T-shaped through slot, and the output shaft is fixedly connected with a fixed disk. The present invention replaces the low torque of the motor shaft with the high torque of the output shaft, so as to avoid the situation that the motor shaft cannot rotate quickly when the motor shaft directly drives the load, resulting in part of the electrical energy being converted into heat energy, and the motor is burned in severe cases, and the motor shaft cannot be guaranteed to be at a high speed and the output shaft has a high torque.

[0004] Although the above-mentioned permanent magnet motor replaces the low torque working condition by outputting high torque, the permanent magnet motor will still inevitably generate heat during operation. If the heat cannot be discharged to the outside of the permanent magnet motor in time, the permanent magnet motor will burn out due to working under high temperature conditions for a long time. At the same time, the existing permanent magnet motor does not have a structure for cleaning the filter or mesh plate during the heat dissipation process. During long-term use, the heat dissipation efficiency of the permanent magnet motor will decrease due to dust accumulation. In addition, the existing permanent magnet motors mostly use a single air cooling method for heat dissipation, and the heat dissipation performance of this method is limited. When the permanent magnet motor runs for a long time under a high load state, the single air cooling heat dissipation method cannot discharge the heat inside the permanent magnet motor to the outside of the permanent magnet motor in time, which easily causes the permanent magnet motor to burn out. Therefore, in view of the above problems, a permanent magnet synchronous servo motor and a housing assembly thereof are proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention provides a permanent magnet synchronous servo motor and a housing assembly thereof.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a permanent magnet synchronous servo motor and a housing assembly thereof described in the present invention include an output shaft; a rotor core is fixedly connected to the rear side of the output shaft, a permanent magnet is fixedly connected to the outer side of the rotor core, four groups of permanent magnets are arranged in total, and the four groups of permanent magnets are evenly arranged on the outer side of the rotor core in a circular array; a stator core is sleeved on the outer side of the rotor core, and a winding is wound on the stator core; A heat dissipation and cleaning structure is provided at the end of the rotor core, and the heat dissipation and cleaning structure includes front blades, which are fixedly connected to the front end of the rotor core, and the rear end of the rotor core is fixedly connected to the rear blades. The rear end of the rotor core is also fixedly connected to a connecting shaft, and the rear end of the connecting shaft is fixedly connected to a main heat dissipation fan. A cleaning component is provided at the rear end of the main heat dissipation fan.

[0007] Preferably, the main heat dissipation fan is provided with vents, the vents are designed in a fan shape, and there are multiple groups of vents.

[0008] Preferably, the cleaning component includes a gear ring, the inner wall of the gear ring is meshed with a planetary gear, the planetary gear is provided with three groups, and the three groups of planetary gears are also meshed with the outer side of the fixed gear, the rear end of the fixed gear is fixedly connected to the front end of the fixed rod, the rear end of the fixed rod is fixedly connected to the center position of the front end of the first dustproof plate, the outer side of the first dustproof plate is provided with a fixing ring, the rear ends of the three groups of planetary gears are all rotatably connected to the connecting rod, the connecting rod is fixedly connected to the rotating circle, the rotating circle is triangular in design, and the three corner ends of the rotating circle are fixedly connected with connecting plates, the rear end of the connecting plate is fixedly connected to the fixed seat, the rear end of the first dustproof plate is fixedly connected to the front end of the fixed shaft, and the rear end of the fixed shaft is fixedly connected to the center position of the front end of the second dustproof plate.

[0009] Preferably, the fixing seat is L-shaped, and cleaning brushes are fixedly connected to the front and rear ends of the fixing seat. The fixing seat cooperates with the gap between the first dustproof plate and the fixing ring. The cleaning brush is made of nylon, and the two groups of cleaning brushes are tightly fitted to the first dustproof plate and the second dustproof plate respectively. The first dustproof plate and the second dustproof plate are both provided with mesh holes.

[0010] The present invention also provides a shell assembly of a permanent magnet synchronous servo motor, comprising a shell body, the inner wall of the shell body is fixedly connected to the outer side of the stator core, the front end of the output shaft penetrates the shell body and is rotatably connected to the shell body, a terminal box is fixedly connected to the left side of the shell body, and heat dissipation grooves are provided at the upper and lower ends and the left and right sides of the outer side of the shell body, a flow channel is provided inside the shell body, the rear end of the flow channel is connected to one end of a first connecting pipe, and the other end of the first connecting pipe is connected to the top of a heat exchanger, the heat exchanger is sleeved on the outer side of the connecting shaft, and the heat exchanger is fixedly connected to the inner wall of the shell body, the bottom end of the heat exchanger is fixedly connected to one end of a second connecting pipe, and the other end of the second connecting pipe is fixedly connected to a first butt joint pipe, two groups of the first butt joint pipes are respectively sleeved inside two groups of second butt joint pipes, the second butt joint pipe is fixedly connected to the two ends of the pumping assembly, and a connecting assembly is provided between the second butt joint pipe and the first butt joint pipe, the front end of the flow channel is fixedly connected to the top of a third connecting pipe, and the bottom end of the third connecting pipe is fixedly connected to the top of the first butt joint pipe.

[0011] Preferably, a baffle is fixedly connected to the inner wall of the shell body near the rear side, the baffle is penetrated by the connecting shaft, and the connecting shaft and the baffle are rotatably connected, the outer wall of the fixing ring is fixedly connected to the inner wall of the shell body, and the outer wall of the second dustproof plate is also fixedly connected to the inner wall of the shell body.

[0012] Preferably, the flow channel is generally designed to be spiral-shaped, and the interior of the flow channel is filled with electronic fluoride liquid.

[0013] Preferably, the connecting assembly includes a sealing gasket, which is fixedly connected to the inner wall of the second butt joint, and the inner wall of the sealing gasket is inwardly retracted in a trumpet shape, and a top block is fixedly connected to the top of the sealing gasket, and two groups of top blocks are provided, and one side of the top block is designed in a slope shape, and the top block cooperates with a fixed block, and the fixed block is sleeved inside the movable cavity, and the movable cavity is opened on the front and rear sides of the first butt joint close to one end of the pumping assembly, and a spring is provided inside the movable cavity, and the end of the spring close to the fixed block is fixedly connected to the fixed block, and the end of the spring away from the fixed block is fixedly connected to the inner wall of the movable cavity, and a movable groove is opened at the bottom end of the fixed block, and a guide rod is fixedly connected to the inside of the movable groove, and a movable block is sleeved on the outer side of the guide rod, and the movable block is fixedly connected to the inner wall of the movable cavity.

[0014] Preferably, the pumping assembly includes a pump casing, the front end of the pump casing is fixedly connected to the baffle, a driving gear and a passive gear are arranged inside the pump casing, the baffle and the driving gear are meshed, the passive gear is rotatably connected to the inner wall of the pump casing, the driving gear is fixedly connected to the connecting shaft, and the connecting shaft passes through the pump casing.

[0015] Preferably, the first connecting pipe, the second connecting pipe, the third connecting pipe and the pump housing are all made of copper, the sealing gasket is made of silicone, and the top block is made of hard rubber.

[0016] The present invention is beneficial in that: 1. The present invention connects the connecting shaft directly to the rotor core, and installs the front blade and the rear blade at the front and rear ends of the rotor core respectively, so that the rotor core synchronously drives the front blade, the rear blade and the main heat dissipation fan to rotate when rotating, so that a large amount of air is constantly in contact with the output shaft, the rotor core, the permanent magnet, the stator core and the winding, so as to take away the heat generated by the motor as a whole during operation, and realizes the function of heat exchange with more air during the operation of the permanent magnet motor, thereby improving the efficiency of heat dissipation of the permanent magnet motor, and solves the problem that although the existing permanent magnet motor replaces the low torque working condition by outputting high torque, the permanent magnet motor still inevitably generates heat during operation, and if the heat cannot be discharged to the outside of the permanent magnet motor in time, the permanent magnet motor will burn due to long-term operation under high temperature conditions, thereby improving the overall stability of the permanent magnet motor during operation, and at the same time, through the structural design of the vents opened on the main heat dissipation fan, the air can smoothly contact the heating components without being blocked by the main heat dissipation fan; 2. The present invention realizes the function of cleaning the dust adhered to the second dustproof plate and the first dustproof plate synchronously when the permanent magnet motor as a whole is working through the structural design of the main cooling fan, the ring gear, the planetary gear and the fixed gear combination. When the rotor core rotates, the three sets of planetary gears are driven to rotate synchronously through the ring gear, so that the rotating circle rotates synchronously, thereby driving the cleaning brush to clean the first dustproof plate and the second dustproof plate. At the same time, the ring gear, the planetary gear and the fixed gear cooperate to reduce the speed of the cleaning brush to scrape the first dustproof plate and the second dustproof plate, thereby avoiding the cleaning brush from being quickly worn out due to maintaining the same rotation speed as the rotor core, and solving the problem that the existing permanent magnet motor does not have a structure for cleaning the filter or the mesh plate during the heat dissipation process, and the heat dissipation efficiency of the permanent magnet motor will decrease due to dust accumulation during long-term use. The existing permanent magnet motor can only be cleaned manually by people to clean the dust. The design of this structure can automatically clean the permanent magnet motor when it is working. 3. The present invention realizes the function of multiple dust barriers through the structural design of the combination of the first dustproof plate, the second dustproof plate and the baffle plate. The structural design can effectively block the dust. At the same time, the first dustproof plate and the second dustproof plate are cleaned with a cleaning brush to keep the first dustproof plate and the second dustproof plate from adhering to dust, thereby further reducing the possibility of dust entering the interior of the permanent magnet motor, and solving the problem that the external dust enters the interior of the permanent magnet motor during the operation of the permanent magnet motor, thereby causing the permanent magnet motor to short-circuit. 4. The present invention realizes the function of rapidly dissipating heat for the permanent magnet motor in multiple forms through the structural design of the heat dissipation grooves provided on the outer side of the shell body, the pumping assembly, the electronic fluoride liquid filled in the flow channel and the heat exchanger. The heat dissipation grooves provided on the outer side of the shell body can effectively increase the contact area between the outer side of the shell body and the air, thereby effectively enhancing the efficiency of heat exchange between the shell body and the air. The electronic fluoride liquid is effectively circulated by the pumping assembly, so that the electronic fluoride liquid can quickly take away the heat generated by the permanent magnet motor when it is working. The heated electronic fluoride liquid is cooled by the combination of the heat exchanger and the main heat dissipation fan, so that the electronic fluoride liquid can efficiently circulate and take away the heat generated by the permanent magnet motor when it is working, solving the problem that the existing permanent magnet motor mostly adopts a single air cooling method when dissipating heat, and the heat dissipation performance of this method is limited. When the permanent magnet motor runs at a high load for a long time, the single air cooling heat dissipation method cannot timely discharge the heat inside the permanent magnet motor to the outside of the permanent magnet motor, thereby easily causing the permanent magnet motor to burn out. 5. The present invention realizes the function of pumping the electronic fluoride liquid by synchronously driving the driving gear to rotate when the permanent magnet motor is working through the structural design of the combination of the pump housing, the driving gear and the passive gear. The driving gear maintains the same rotation speed as the rotor core by connecting with the connecting shaft. In this way, the pumping speed of the electronic fluoride liquid can be controlled to be synchronized with the working state of the permanent magnet motor. When the permanent magnet motor runs at high speed, the driving gear and the passive gear also rotate at the same speed as the high-speed operation of the permanent magnet motor to pump the electronic fluoride liquid, and quickly discharge the heat from the inside of the electronic fluoride liquid. 6. The present invention realizes the function of conveniently connecting the first butt joint tube and the second butt joint tube during installation through the structural design of the connecting component, which solves the problem that in the prior art, the first butt joint tube and the second butt joint tube are mostly made of PVC material. When the permanent magnet motor is assembled as a whole, the connection between the first butt joint tube and the second butt joint tube needs to use an electric soldering iron to first melt the guide rod and the second butt joint tube made of PVC material, and then combine the melted first butt joint tube and the second butt joint tube together to connect the first butt joint tube and the second butt joint tube. By using the connecting component, not only the assembly between the first butt joint tube and the second butt joint tube is facilitated, but also the electronic fluorine liquid can be supplemented or replaced when the permanent magnet motor is maintained later. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a side cross-sectional three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of a first front view cross-sectional three-dimensional structure of the present invention; Figure 5 It is a schematic diagram of a second front cross-sectional three-dimensional structure of the present invention; Figure 6 It is a schematic diagram of the partial explosion structure of the present invention; Figure 7 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the housing body of the present invention from a side view; Figure 8 It is a schematic diagram of a partial three-dimensional structure of the present invention; Fig. 9 It is a schematic diagram of a partial side cross-sectional three-dimensional structure of the present invention; Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0019] In the figure: 1, output shaft; 21, rotor core; 22, permanent magnet; 23, stator core; 24, winding; 25, connecting shaft; 31, front fan blade; 32, rear fan blade; 33, main cooling fan; 34, vent; 35, gear ring; 36, planetary gear; 37, fixed gear; 38, fixed rod; 39, first dust plate; 40, fixed ring; 41, connecting rod; 42, rotating ring; 43, connecting plate; 44, fixed seat; 45, cleaning brush; 46, second dust plate; 47, fixed Fixed axis; 51, shell body; 52, junction box; 53, heat sink; 54, flow channel; 55, first connecting pipe; 56, heat exchanger; 57, second connecting pipe; 59, first butt joint; 61, second butt joint; 62, pump housing; 63, sealing gasket; 64, top block; 65, fixed block; 66, movable cavity; 67, spring; 68, movable groove; 69, guide rod; 71, movable block; 72, baffle; 73, driving gear; 74, passive gear; 75, third connecting pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 6 As shown, a permanent magnet synchronous servo motor comprises an output shaft 1; a rotor core 21 is fixedly connected to the rear side of the output shaft 1, a permanent magnet 22 is fixedly connected to the outer side of the rotor core 21, a total of four groups of permanent magnets 22 are arranged, and the four groups of permanent magnets 22 are evenly arranged on the outer side of the rotor core 21 in a circular array, a stator core 23 is sleeved on the outer side of the rotor core 21, and a winding 24 is wound around the stator core 23; The end of the rotor core 21 is provided with a heat dissipation cleaning structure, which includes a front fan blade 31, which is fixedly connected to the front end of the rotor core 21, and a rear fan blade 32 is fixedly connected to the rear end of the rotor core 21. The rear end of the rotor core 21 is also fixedly connected to a connecting shaft 25, and the rear end of the connecting shaft 25 is fixedly connected to a main heat dissipation fan 33, and a cleaning component is provided at the rear end of the main heat dissipation fan 33; During operation, the rotor core 21 rotates synchronously with the front blades 31 and the rear blades 32, so that a large amount of air continuously contacts the output shaft 1, the rotor core 21, the permanent magnet 22, the stator core 23 and the winding 24, thereby taking away the heat generated by the motor as a whole during operation, realizing the function of heat exchange with more air during the operation of the permanent magnet motor, thereby improving the efficiency of heat dissipation of the permanent magnet motor.

[0022] Furthermore, the main cooling fan 33 is provided with ventilation holes 34, which are fan-shaped and have multiple groups. During operation, the air can smoothly contact the heat generating components without being blocked by the main heat dissipation fan 33 due to the structural design of the vent holes 34 provided on the main heat dissipation fan 33 .

[0023] Furthermore, the cleaning component includes a gear ring 35, the inner wall of the gear ring 35 is meshed with planetary gears 36, three groups of planetary gears 36 are provided, and the three groups of planetary gears 36 are also meshed with the outer side of a fixed gear 37, the rear end of the fixed gear 37 is fixedly connected to the front end of a fixed rod 38, the rear end of the fixed rod 38 is fixedly connected to the center position of the front end of a first dustproof plate 39, a fixed ring 40 is provided on the outer side of the first dustproof plate 39, the rear ends of the three groups of planetary gears 36 are all rotatably connected to a connecting rod 41, the connecting rod 41 is fixedly connected to a rotating ring 42, the rotating ring 42 is triangular in design, and the three corner ends of the rotating ring 42 are fixedly connected to a connecting plate 43, the rear end of the connecting plate 43 is fixedly connected to a fixed seat 44, the rear end of the first dustproof plate 39 is fixedly connected to the front end of a fixed shaft 47, and the rear end of the fixed shaft 47 is fixedly connected to the center position of the front end of the second dustproof plate 46; During operation, when the main cooling fan 33 rotates, it drives the fixedly connected ring gear 35 to rotate synchronously, so that the planetary gear 36 meshing with the ring gear 35 also rotates synchronously. Because the fixed gear 37 meshing with the planetary gear 36 cannot rotate, the planetary gear 36 makes a circular motion on the outside of the fixed gear 37 under the drive of the ring gear 35, and the deceleration effect is achieved through the combination of the ring gear 35, the planetary gear 36 and the fixed gear 37. When the three groups of planetary gears 36 make a circular motion synchronously on the outside of the fixed gear 37, they drive the rotating circle 42 to rotate synchronously through the connecting rod 41, so that the rotating circle 42 drives the connecting plate 43, the fixed seat 44 and the cleaning brush 45 to rotate synchronously, and then the first dustproof plate 39 and the second dustproof plate 46 are cleaned synchronously, and the dust on the first dustproof plate 39 and the second dustproof plate 46 is swept away.

[0024] Furthermore, the fixing seat 44 is L-shaped, and the front and rear ends of the fixing seat 44 are fixedly connected with cleaning brushes 45, the fixing seat 44 is matched with the gap between the first dustproof plate 39 and the fixing ring 40, the cleaning brush 45 is made of nylon, and the two sets of cleaning brushes 45 are tightly fitted with the first dustproof plate 39 and the second dustproof plate 46 respectively, and the first dustproof plate 39 and the second dustproof plate 46 are both provided with mesh holes; During operation, the cleaning brush 45 reduces the speed of scraping the first dustproof plate 39 and the second dustproof plate 46 through the cooperation of the ring gear 35, the planetary gear 36 and the fixed gear 37, thereby preventing the cleaning brush 45 from wearing out quickly due to maintaining the same rotation speed as the rotor core 21. This solves the problem that the existing permanent magnet motor does not have a structure for cleaning the filter or mesh plate during the heat dissipation process, and the heat dissipation efficiency of the permanent magnet motor will decrease due to dust accumulation during long-term use.

[0025] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: Figure 7-Figure 10 As shown, the embodiment of the present invention provides a housing assembly of a permanent magnet synchronous servo motor, including a housing body 51, the inner wall of the housing body 51 is fixedly connected to the outer side of the stator core 23, the front end of the output shaft 1 passes through the housing body 51 and is rotatably connected to the housing body 51, a terminal box 52 is fixedly connected to the left side of the housing body 51, and heat dissipation grooves 53 are provided at the upper and lower ends and the left and right sides of the outer side of the housing body 51, and a flow channel 54 is provided inside the housing body 51, and the rear end of the flow channel 54 is connected to one end of a first connecting pipe 55, and the other end of the first connecting pipe 55 is connected to the top of a heat exchanger 56, and the heat exchanger 56 is sleeved on the connecting pipe 55. The outer side of the shaft 25, and the heat exchanger 56 is fixedly connected to the inner wall of the shell body 51, the bottom end of the heat exchanger 56 is fixedly connected to one end of the second connecting pipe 57, and the other end of the second connecting pipe 57 is fixedly connected to the first butt joint pipe 59, the first butt joint pipe 59 is provided with two groups, and the two groups of first butt joint pipes 59 are respectively sleeved inside the two groups of second butt joint pipes 61, the second butt joint pipe 61 is fixedly connected to the two ends of the pumping assembly, and a connecting assembly is provided between the second butt joint pipe 61 and the first butt joint pipe 59, the front end of the flow channel 54 is fixedly connected to the top end of the third connecting pipe 75, and the bottom end of the third connecting pipe 75 is fixedly connected to the top first butt joint pipe 59; During operation, the combined structural design of the heat dissipation groove 53 provided on the outer side of the shell body 51, the pumping assembly, the electronic fluoride liquid filled in the flow channel 54 and the heat exchanger 56 realizes the function of rapidly dissipating heat for the permanent magnet motor in multiple forms. The heat dissipation groove 53 provided on the outer side of the shell body 51 can effectively increase the contact area between the outer side of the shell body 51 and the air, thereby effectively enhancing the efficiency of heat exchange between the shell body 51 and the air. The electronic fluoride liquid is effectively circulated by the pumping assembly, so that the electronic fluoride liquid can quickly take away the heat generated by the permanent magnet motor during operation. The heated electronic fluoride liquid is cooled by the combined action of the heat exchanger 56 and the main heat dissipation fan 33, so that the electronic fluoride liquid can efficiently circulate and take away the heat generated by the permanent magnet motor during operation. The electronic fluoride liquid has good insulation and good compatibility with most metals, rubbers and plastic materials. By using the electronic fluoride liquid, the circuit short circuit caused by leakage can be effectively avoided, which can effectively protect the permanent magnet motor as a whole.

[0026] Furthermore, a baffle 72 is fixedly connected to the inner wall of the housing body 51 near the rear side, the baffle 72 is penetrated by the connecting shaft 25, and the connecting shaft 25 and the baffle 72 are rotatably connected, the outer wall of the fixing ring 40 is fixedly connected to the inner wall of the housing body 51, and the outer wall of the second dustproof plate 46 is also fixedly connected to the inner wall of the housing body 51; During operation, the structure design of the combination of the first dustproof plate 39, the second dustproof plate 46 and the baffle plate 72 realizes the function of multiple dust blocking.

[0027] Furthermore, the flow channel 54 is generally designed in a spiral shape, and the interior of the flow channel 54 is filled with electronic fluoride liquid; During operation, the spirally designed flow channel 54 can fully absorb the heat generated by the permanent magnet motor during operation, and quickly conduct the heat to the air through the combination with the heat dissipation slot 53 and the heat exchanger 56, thereby preventing the permanent magnet motor from malfunctioning due to overheating during operation.

[0028] Further, the connecting component includes a sealing gasket 63, which is fixedly connected to the inner wall of the second butt joint 61, and the inner wall of the sealing gasket 63 is inwardly contracted in a trumpet shape, and a top block 64 is fixedly connected to the top of the sealing gasket 63, and two groups of top blocks 64 are provided, and one side of the top block 64 is designed in a slope shape, and the top block 64 cooperates with a fixed block 65, and the fixed block 65 is sleeved inside the movable cavity 66, and the movable cavity 66 is provided on the front and rear sides of the first butt joint 59 near one end of the pumping component, and a spring 67 is provided inside the movable cavity 66, and one end of the spring 67 close to the fixed block 65 is fixedly connected to the fixed block 65, and the end of the spring 67 away from the fixed block 65 is fixedly connected to the inner wall of the movable cavity 66, and a movable groove 68 is provided at the bottom end of the fixed block 65, and a guide rod 69 is fixedly connected to the inside of the movable groove 68, and a movable block 71 is sleeved on the outer side of the guide rod 69, and the movable block 71 is fixedly connected to the inner wall of the movable cavity 66; During operation, the first butt joint tube and the second butt joint tube in the prior art are mostly made of PVC material. When the permanent magnet motor is assembled as a whole, the connection between the first butt joint tube and the second butt joint tube needs to be melted with an electric soldering iron firstly to melt the guide rod and the second butt joint tube made of PVC material, and then the melted first butt joint tube and the second butt joint tube are combined together to connect the first butt joint tube and the second butt joint tube. When the first butt joint tube 59 and the second butt joint tube 61 are to be connected, the first butt joint tube 59 is first inserted into the interior of the second butt joint tube 61. At this time, the outer side of the fixed block 65 first contacts the inner wall of the sealing gasket 63 and is squeezed by the inner wall of the sealing gasket 63. Because the inner wall of the sealing gasket 63 is designed in a trumpet-shaped diffusion shape, the extrusion of the fixed block 65 will continue to increase, and it will continue to move toward the inside of the active cavity 66 and squeeze the spring 67, so that the spring 67 is squeezed under the extrusion force. The movable block 71 on the inner wall of the movable cavity 66 fixedly connected to the fixed block 65 slides synchronously in the movable groove 68 when the fixed block 65 moves. The moving distance of the fixed block 65 is limited by the combined action of the movable block 71 and the movable groove 68 to prevent the fixed block 65 from escaping from the movable cavity 66 due to excessive movement under the action of the restoring force of the spring 67. When the first butt joint tube 59 is continuously inserted into the second butt joint tube 61 until the fixed block 65 is not squeezed by the inner wall of the sealing gasket 63, the fixed block 65 moves to its original position under the action of the restoring force of the spring 67, and engages with the sealing gasket 63 and the top block 64 to connect the first butt joint tube 59 with the second butt joint tube 61. The gap between the inner walls of the first butt joint tube 59 and the second butt joint tube 61 is filled by the sealing gasket 63 made of silicone, thereby enhancing the sealing effect.

[0029] Further, the pumping assembly includes a pump housing 62, the front end of the pump housing 62 is fixedly connected to the baffle 72, a driving gear 73 and a passive gear 74 are arranged inside the pump housing 62, the baffle 72 and the driving gear 73 are meshed, the passive gear 74 is rotatably connected to the inner wall of the pump housing 62, the driving gear 73 is fixedly connected to the connecting shaft 25, the connecting shaft 25 passes through the pump housing 62, and the connecting shaft 25 and the pump housing 62 are sealed by a conventional sealing method such as a sealing ring to avoid leakage of the electronic fluorinated liquid; During operation, the connecting shaft 25 drives the driving gear 73 to rotate synchronously at the same speed, so that the driven gear 74 meshing with the driving gear 73 rotates synchronously, thereby driving the electronic fluoride liquid to flow, and the heated electronic fluoride liquid is transported to the top of the heat exchanger 56 through the first connecting pipe 55, and quickly exchanges heat with the air through the heat exchanger 56. The heat on the heat exchanger 56 is quickly discharged to the outside of the motor under the action of the negative pressure formed inside the shell body 51. When the electronic fluoride liquid is transported to the inside of the heat exchanger 56, the electronic fluoride liquid with a higher temperature will be maintained at the upper end of the heat exchanger 56. When the electronic fluoride liquid is cooled to a lower temperature, it will flow to the bottom end of the heat exchanger 56 and be pumped to the front end of the flow channel 54 through the second connecting pipe 57 and the third connecting pipe 75. In this way, the permanent magnet motor is further cooled. When the motor is reversed, the pumping direction is opposite. At the same time, the heat exchanger 56 is cooled by the positive pressure formed by the main cooling fan 33, thereby cooling the electronic fluoride liquid.

[0030] Further, the first connecting pipe 55, the second connecting pipe 57, the third connecting pipe 75 and the pump housing 62 are all made of copper, the sealing gasket 63 is made of silicone, and the top block 64 is made of hard rubber; During operation, the first connecting tube 55, the second connecting tube 57, the third connecting tube 75 and the pump housing 62 made of copper can quickly transfer heat to the air, thereby playing an auxiliary heat dissipation effect and further enhancing the heat dissipation performance.

[0031] Working principle: When the permanent magnet motor is working in the forward rotation, the rotor core 21 drives the front blades 31 fixedly connected to the front and rear ends to rotate synchronously. The front blades 31 at the front end of the rotor core 21 will blow the heated air backwards, contacting the rotor core 21, the permanent magnet 22, the stator core 23 and the winding 24, and taking away the heat generated by the rotor core 21, the permanent magnet 22, the stator core 23 and the winding 24 during operation. At the same time, when the rotor core 21 rotates, the fixedly connected connecting shaft 25 is also driven to rotate synchronously, so that the main cooling fan 33 fixedly connected to the connecting shaft 25 rotates synchronously, and the outer shell body The air inside 51 is drawn outward, so that the heated air is discharged to the outside of the shell body 51, which has the effect of dissipating the heat of the permanent magnet motor as a whole. When the permanent magnet motor rotates forward, the air inside the shell body 51 is continuously discharged outward through the combination of the front fan blades 31, the rear fan blades 32 and the main cooling fan 33, so that a negative pressure is formed inside the shell body 51, and then the external cold air continuously enters the inside of the shell body 51 to dissipate the heat of the shell body 51. When the permanent magnet motor reverses, a positive pressure is formed to continuously blow the external cold air into the inside of the shell body 51 to dissipate the heat of the permanent magnet motor.

[0032] When the main cooling fan 33 rotates, the fixedly connected ring gear 35 is driven to rotate synchronously, so that the planetary gear 36 meshing with the ring gear 35 also rotates synchronously. Because the fixed gear 37 meshing with the planetary gear 36 cannot rotate, the planetary gear 36 makes a circular motion on the outside of the fixed gear 37 under the drive of the ring gear 35, and the deceleration effect is achieved through the combination of the ring gear 35, the planetary gear 36 and the fixed gear 37. When the three groups of planetary gears 36 make a circular motion synchronously on the outside of the fixed gear 37, the connecting rod 41 drives the rotating circle 42 to rotate synchronously, so that the rotating circle 42 drives the connecting plate 43, the fixed seat 44 and the cleaning brush 45 to rotate synchronously, and then the first dustproof plate 39 and the second dustproof plate 46 are cleaned synchronously, and the dust on the first dustproof plate 39 and the second dustproof plate 46 is swept away.

[0033] When the permanent magnet motor rotates forward, the driving gear 73 is driven to rotate synchronously at the same speed through the connecting shaft 25, so that the driven gear 74 meshing with the driving gear 73 rotates synchronously, thereby driving the electronic fluoride liquid to flow, and the heated electronic fluoride liquid is transported to the top of the heat exchanger 56 through the first connecting pipe 55, and quickly exchanges heat with the air through the heat exchanger 56. The heat on the heat exchanger 56 is quickly discharged to the outside of the motor under the action of the negative pressure formed inside the shell body 51. When the electronic fluoride liquid is transported to the inside of the heat exchanger 56, the electronic fluoride liquid with a higher temperature will be maintained at the upper end of the heat exchanger 56. When the electronic fluoride liquid is cooled to a lower temperature, it will flow to the bottom end of the heat exchanger 56 and be pumped to the front end of the flow channel 54 through the second connecting pipe 57 and the third connecting pipe 75. In this way, the permanent magnet motor is further cooled. When the motor is reversed, the pumping direction is opposite. At the same time, the heat exchanger 56 is cooled by the positive pressure formed by the main cooling fan 33, thereby cooling the electronic fluoride liquid.

[0034] When the first butt joint 59 and the second butt joint 61 are to be connected, the first butt joint 59 is first inserted into the second butt joint 61. At this time, the outer side of the fixed block 65 first contacts the inner wall of the sealing gasket 63 and is squeezed by the inner wall of the sealing gasket 63. Since the inner wall of the sealing gasket 63 is designed in a trumpet-shaped diffusion shape, the squeeze on the fixed block 65 will continue to increase, and it will continue to move toward the inside of the active cavity 66 and squeeze the spring 67, so that the spring 67 is elastically deformed under the action of the squeezing force. When the fixed block 65 moves, the moving block 71 on the inner wall of the active cavity 66 that is fixedly connected to it slides synchronously inside the moving groove 68. The movable groove 68 combination limits the moving distance of the fixed block 65, preventing the fixed block 65 from falling out of the movable cavity 66 due to excessive movement under the restoring force of the spring 67. When the first butt joint 59 is continuously inserted into the second butt joint 61 until the fixed block 65 is not squeezed by the inner wall of the sealing gasket 63, the fixed block 65 moves to the original position under the restoring force of the spring 67, and engages with the sealing gasket 63 and the top block 64 to connect the first butt joint 59 with the second butt joint 61. The sealing gasket 63 made of silicone fills the gap between the inner wall of the first butt joint 59 and the second butt joint 61, thereby enhancing the sealing effect. When the connection between the first butt joint 59 and the second butt joint 61 is to be released, the first butt joint 59 is first rotated to drive the fixing block 65 to rotate. If the first butt joint 59 cannot be rotated, it can be rotated in the opposite direction to make the fixing block 65 abut against the top block 64. At this time, the first butt joint 59 is continuously rotated to make the fixing block 65 move toward the inside of the movable cavity 66 under the action of the squeezing force of the top block 64 to gradually release the engagement state between the sealing gasket 63 and the top block 64. When the fixing block 65 completely enters the inside of the movable cavity 66, the connection between the first butt joint 59 and the second butt joint 61 can be released by pulling the first butt joint 59 away from the second butt joint 61.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A permanent magnet synchronous servo motor, comprising an output shaft (1); characterized in that: A rotor core (21) is fixedly connected to the rear side of the output shaft (1), a permanent magnet (22) is fixedly connected to the outer side of the rotor core (21), a total of four groups of the permanent magnets (22) are provided, and the four groups of the permanent magnets (22) are evenly arranged in a circular array on the outer side of the rotor core (21), a stator core (23) is sleeved on the outer side of the rotor core (21), and a winding (24) is wound around the stator core (23); A heat dissipation and cleaning structure is provided at the end of the rotor core (21), the heat dissipation and cleaning structure comprising a front fan blade (31), the front fan blade (31) being fixedly connected to the front end of the rotor core (21), the rear end of the rotor core (21) being fixedly connected to a rear fan blade (32), and the rear end of the rotor core (21) being also fixedly connected to a connecting shaft (25), the rear end of the connecting shaft (25) being fixedly connected to a main heat dissipation fan (33), and the rear end of the main heat dissipation fan (33) being provided with a cleaning component.

2. A permanent magnet synchronous servo motor according to claim 1, characterized in that: The main heat dissipation fan (33) is provided with ventilation holes (34), the ventilation holes (34) are designed in a fan shape, and the ventilation holes (34) are provided in multiple groups.

3. A permanent magnet synchronous servo motor according to claim 2, characterized in that: The cleaning assembly comprises a gear ring (35), the inner wall of the gear ring (35) is meshed with a planetary gear (36), three groups of the planetary gear (36) are provided, and the three groups of the planetary gear (36) are also meshed with the outer side of a fixed gear (37), the rear end of the fixed gear (37) is fixedly connected to the front end of a fixed rod (38), the rear end of the fixed rod (38) is fixedly connected to the center position of the front end of a first dustproof plate (39), the outer side of the first dustproof plate (39) is provided with a fixed ring (40), and the three groups of the planetary gear (36) are provided with a fixed ring (40). The rear ends of the wheels (36) are rotatably connected to the connecting rod (41), the connecting rod (41) is fixedly connected to the rotating circle (42), the rotating circle (42) is triangular in design, and the three corner ends of the rotating circle (42) are fixedly connected to connecting plates (43), the rear end of the connecting plate (43) is fixedly connected to the fixing seat (44), the rear end of the first dustproof plate (39) is fixedly connected to the front end of the fixed shaft (47), and the rear end of the fixed shaft (47) is fixedly connected to the center position of the front end of the second dustproof plate (46).

4. A permanent magnet synchronous servo motor according to claim 3, characterized in that: The fixing seat (44) is L-shaped, and the front and rear ends of the fixing seat (44) are fixedly connected with cleaning brushes (45). The fixing seat (44) is matched with the gap between the first dustproof plate (39) and the fixing ring (40). The cleaning brushes (45) are made of nylon, and two groups of the cleaning brushes (45) are tightly fitted with the first dustproof plate (39) and the second dustproof plate (46), respectively. The first dustproof plate (39) and the second dustproof plate (46) are both provided with mesh holes.

5. A housing assembly of a permanent magnet synchronous servo motor, characterized in that: A permanent magnet synchronous servo motor as claimed in claim 4, the housing assembly comprising a housing body (51), the inner wall of the housing body (51) being fixedly connected to the outer side of the stator core (23), the front end of the output shaft (1) passing through the housing body (51) and being rotatably connected to the housing body (51), the left side of the housing body (51) being fixedly connected to a terminal box (52), the upper and lower ends and the left and right sides of the outer side of the housing body (51) being provided with heat dissipation grooves (53), the interior of the housing body (51) being provided with a flow channel (54), the rear end of the flow channel (54) being connected to one end of a first connecting pipe (55), the other end of the first connecting pipe (55) being connected to the top end of a heat exchanger (56), the heat exchanger (56) being sleeved on the connecting pipe (55). The heat exchanger (56) is fixedly connected to the outer side of the shaft (25), and the heat exchanger (56) is fixedly connected to the inner wall of the shell body (51); the bottom end of the heat exchanger (56) is fixedly connected to one end of the second connecting pipe (57), and the other end of the second connecting pipe (57) is fixedly connected to the first butt joint pipe (59); two groups of the first butt joint pipes (59) are provided, and the two groups of the first butt joint pipes (59) are respectively sleeved inside the two groups of the second butt joint pipes (61); the second butt joint pipes (61) are fixedly connected to the two ends of the pumping assembly, and a connecting assembly is provided between the second butt joint pipe (61) and the first butt joint pipe (59); the front end of the flow channel (54) is fixedly connected to the top end of the third connecting pipe (75), and the bottom end of the third connecting pipe (75) is fixedly connected to the top end of the first butt joint pipe (59).

6. The housing assembly of a permanent magnet synchronous servo motor according to claim 5, characterized in that: A baffle (72) is fixedly connected to the inner wall of the shell body (51) near the rear side, the baffle (72) is penetrated by the connecting shaft (25), and the connecting shaft (25) and the baffle (72) are rotatably connected, the outer wall of the fixing ring (40) is fixedly connected to the inner wall of the shell body (51), and the outer wall of the second dustproof plate (46) is also fixedly connected to the inner wall of the shell body (51).

7. The housing assembly of a permanent magnet synchronous servo motor according to claim 6, characterized in that: The flow channel (54) is generally designed to be spiral-shaped, and the interior of the flow channel (54) is filled with electronic fluoride liquid.

8. The housing assembly of a permanent magnet synchronous servo motor according to claim 7, characterized in that: The connection assembly comprises a sealing gasket (63), the sealing gasket (63) being fixedly connected to the inner wall of the second butt joint pipe (61), and the inner wall of the sealing gasket (63) is inwardly contracted in a trumpet shape, and a top block (64) is fixedly connected to the top of the sealing gasket (63), and two groups of the top blocks (64) are provided, and one side of the top blocks (64) is designed in a slope shape, and the top blocks (64) cooperate with the fixed blocks (65), and the fixed blocks (65) are sleeved inside the movable cavity (66), and the movable cavity (66) is opened at one end of the first butt joint pipe (59) close to the pumping assembly. On the front and rear sides, a spring (67) is arranged inside the movable cavity (66), one end of the spring (67) close to the fixed block (65) is fixedly connected to the fixed block (65), and one end of the spring (67) away from the fixed block (65) is fixedly connected to the inner wall of the movable cavity (66), a movable groove (68) is formed at the bottom end of the fixed block (65), a guide rod (69) is fixedly connected inside the movable groove (68), a movable block (71) is sleeved on the outer side of the guide rod (69), and the movable block (71) is fixedly connected to the inner wall of the movable cavity (66).

9. The housing assembly of a permanent magnet synchronous servo motor according to claim 8, characterized in that: The pumping assembly comprises a pump housing (62), the front end of the pump housing (62) being fixedly connected to a baffle (72), a driving gear (73) and a driven gear (74) being arranged inside the pump housing (62), the baffle (72) and the driving gear (73) being meshed with each other, the driven gear (74) being rotatably connected to an inner wall of the pump housing (62), the driving gear (73) being fixedly connected to a connecting shaft (25), and the connecting shaft (25) passing through the pump housing (62).

10. The housing assembly of a permanent magnet synchronous servo motor according to claim 9, characterized in that: The first connecting tube (55), the second connecting tube (57), the third connecting tube (75) and the pump housing (62) are all made of copper, the sealing gasket (63) is made of silicone, and the top block (64) is made of hard rubber.

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