Permanent magnet synchronous turbine gear motor for elevator

Abstract

The utility model provides a permanent magnet synchronous turbine gear motor for an elevator, belongs to the technical field of elevators, and solves the problem that the conventional similar motor is easy to vibrate during operation. The motor comprises a sports car shell and an outer cover fixed with the sports car shell, and an integrally formed gear motor shell is fixedly connected in the outer cover. The speed reduction motor shell is provided with a speed reduction cavity and a motor cavity which are perpendicular in axis and communicated with each other, the outer side face of the motor cavity abuts against the outer cover, and at least two fixing columns protrude out of the outer side of the speed reduction cavity and are fixed to the outer cover. A stator, a rotor and a motor shaft are arranged in the motor cavity, one end is connected with a motor end cover, and an encoder is arranged outside the end cover; a speed reduction shaft and a speed reduction gear are arranged in the speed reduction cavity, and the speed reduction gear is in meshing transmission with the motor shaft. The speed reducing motor is compact in structure and stable in connection, vibration of the speed reducing motor in the operation process can be effectively reduced, and the operation safety and reliability of the elevator are improved.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting technology, and specifically refers to a permanent magnet synchronous worm gear motor used in hoists. Background Technology

[0002] Workstation hoists primarily serve industries such as automotive manufacturing, electronics assembly, and logistics warehousing, and are particularly suitable for scenarios requiring high precision and efficiency, such as handling consumable parts and assembling precision instruments. A workstation hoist consists of a trolley mounted on an I-beam, driven by a geared motor fixed to the outside of the trolley's casing. The geared motor comprises a servo motor and a gearbox, and is suspended and fixed. Due to the leverage effect, vibrations are amplified, and the trolley is prone to vibration in the servo motor and gearbox when operating under load, causing wear on the gears inside the gearbox and affecting the trolley's lifespan. The challenge lies in reducing vibration of the geared motor during trolley operation and enabling more precise control of the trolley's movement. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a permanent magnet synchronous worm gear motor for hoists.

[0004] The objective of this utility model can be achieved through the following technical solution: A permanent magnet synchronous worm geared motor for a hoist includes a trolley housing and an outer cover fixedly connected to the trolley housing. An integrally formed geared motor housing is fixedly connected inside the outer cover. The geared motor housing has a reduction cavity and a motor cavity with mutually perpendicular axes. The motor cavity extends towards and communicates with the reduction cavity. The outer side of the motor cavity abuts against the outer cover. At least two fixed posts protrude outward from the outer side of the reduction cavity, abutting and fixing against the outer cover. A stator is fixedly installed on the inner side of the motor cavity. A rotor is rotatably connected to the stator. A motor shaft is fixedly connected to the rotor. A motor end cover is fixedly connected to one end of the motor cavity. An encoder is fixedly connected to the outside of the motor end cover. A reduction shaft is rotatably fixed inside the reduction cavity. A reduction gear is fixedly connected to the reduction shaft, and the reduction gear meshes with the motor shaft for transmission. The encoder can detect the position and angle information of the motor shaft in real time and feed this information back to the control system. During operation, the control system can accurately control the position of the trolley based on the position feedback provided by the encoder, ensuring that it accurately reaches the target position and avoiding positional deviation. The encoder can also monitor the motor speed in real time, allowing the control system to precisely adjust the speed of the hoist carriage and achieve stable speed control. This ensures the hoist carriage maintains an appropriate speed under both heavy and light loads. The accurate feedback information provided by the encoder enables the control system to achieve more precise closed-loop control. The permanent magnet synchronous motor uses permanent magnets to generate a magnetic field, reducing excitation losses and improving motor efficiency, thus achieving energy savings during carriage operation. The constant magnetic field provided by the permanent magnets allows the motor to maintain high efficiency under different load conditions. The permanent magnet synchronous worm geared motor can output greater power within the same volume and weight. The motor can provide sufficient power to the carriage without occupying excessive space, contributing to the compact design and overall performance improvement of the hoist. The one-piece molded geared motor housing consists of a reduction chamber and a motor chamber, integrating the reduction mechanism and the motor together. This reduces connection and assembly errors between components, improving overall reliability and stability. The outer side of the reduction chamber protrudes outward and is fixed against the outer cover, while the outer side of the motor chamber abuts against the outer cover, forming a stable mounting structure. This reduces vibration of the geared motor during vehicle operation, allowing the vehicle to start, stop, and change speed smoothly, thus improving operational safety and reliability.

[0005] Furthermore, the outer cover has heat dissipation strips protruding inward and heat dissipation fins protruding outward on the side wall of the sports car shell. One end of the heat dissipation strips abuts against the outer side of the motor cavity, and the heat dissipation fins have a gap with the sports car shell.

[0006] Furthermore, the heat dissipation fins are in an inclined arc shape, and the heat dissipation strips are arranged intersecting with the heat dissipation fins. The heat dissipation strips on the outer casing abut against the motor cavity, effectively transferring the heat generated by the motor to the outer casing. The inclined arrangement of the heat dissipation fins and their intersection with the heat dissipation strips increases the heat dissipation area and improves heat dissipation efficiency. The gap between the heat dissipation fins and the vehicle shell facilitates airflow, further enhancing the heat dissipation effect, ensuring the motor operates within its normal operating temperature range, and extending the motor's service life.

[0007] Furthermore, one end of the deceleration chamber is fixedly connected to a deceleration end cover. The deceleration shaft includes a first mounting part, a fixing part, a second mounting part, a third mounting part, and a connecting part in sequence. A bearing is fixedly connected between the first mounting part and the deceleration end cover. A bearing is fixedly connected between the third mounting part and the deceleration chamber. A deceleration gear is fixedly connected to the second mounting part. The two ends of the fixing part abut against the bearing and the deceleration gear, respectively. An isolation gasket is provided between the deceleration gear and the bearing. The connecting part extends out of the outer cover.

[0008] Furthermore, there are three fixed posts evenly distributed along the circumference of the deceleration cavity, and a boss is provided inside the outer cover. The fixed posts and the boss are fixedly connected by fasteners.

[0009] Furthermore, a conical platform protrudes outward from the outer side of the outer casing, and the conical platform and the boss are coaxial. Cylindrical platforms, evenly distributed along the circumference of the conical platform, also protrude from the outer side of the outer casing. These cylindrical platforms abut against the vehicle housing, which has mounting holes. Support members are fixedly installed within these mounting holes. One end of the conical platform is embedded in the mounting hole and abuts against the support member. The conical platform's abutment against the support member within the mounting hole improves the installation accuracy between the reduction shaft and the vehicle housing, reducing axial vibration of the reduction shaft. The fixed posts on the outer side of the reduction chamber are fixedly connected to the outer casing using fasteners, enhancing the connection strength between the reduction motor housing and the outer casing and ensuring the stability of the entire motor structure. The three fixed posts are evenly distributed along the circumference of the reduction chamber, resulting in more uniform stress distribution and improved structural reliability.

[0010] Furthermore, the motor cavity includes a motor mounting part, a fixed mounting part, and a gear mounting part. The motor mounting part houses the rotor and stator. The motor shaft passes through the fixed mounting part and extends into the gear mounting part to mesh with the reduction gear for transmission. A sealing component is provided on the fixed mounting part.

[0011] Furthermore, the sealing component includes an annular sealing body, which protrudes with support rings of varying heights and a wavy sealing lip. The length of the sealing lip is less than the length of the support rings, and a sealing cavity exists between the sealing lip and the support rings. The sealing component employs a wavy, zigzag-shaped sealing lip combined with a support ring design, which isolates external contamination while suppressing axial vibration, thereby improving the overall operational stability and component lifespan.

[0012] Compared with existing technologies, the technical advantages of this utility model are as follows: First, by using a one-piece molded geared motor housing, the permanent magnet synchronous motor and the worm gear reducer mechanism are integrated into a single structure. The fixed column and conical platform improve assembly precision, reduce vibration and errors, and enhance structural stability and reliability. Combined with real-time position and speed feedback from the encoder, a closed-loop control system is formed, ensuring precise positioning and speed adjustment of the vehicle, adapting to heavy / light load conditions, and achieving smooth start-stop and speed change. Second, the permanent magnet synchronous motor provides strong power while saving space, meeting the requirements for lightweight and compact equipment, and supporting overall system performance optimization. Attached Figure Description

[0013] Figure 1 This utility model is a three-dimensional Figure 1 .

[0014] Figure 2 This is a cross-section of the utility model. Figure 1 .

[0015] Figure 3 This is an enlarged view of section A of this utility model.

[0016] Figure 4 This is a cross-section of the utility model. Figure 2 .

[0017] Figure 5 This is an enlarged view of section B of this utility model.

[0018] Figure 6 This utility model is a three-dimensional Figure 2 .

[0019] Drawing number markings: 1. Sports car shell; 101. Mounting hole; 2. Outer cover; 201. Heat sink; 202. Heat sink fin; 203. Boss; 204. Conical platform; 205. Cylindrical platform; 3. Gear motor housing; 301. Gearbox cavity; 302. Motor cavity; 3021. Motor mounting part; 3022. Fixed mounting part; 3023. Gear mounting part; 303. Fixed column; 4. Stator; 5. Rotor; 6. Motor shaft; 7. Motor end 8. Cover; 9. Encoder; 10. Reduction shaft; 11. First mounting part; 12. Fixing part; 13. Second mounting part; 14. Third mounting part; 15. Connecting part; 16. Reduction gear; 17. Reduction end cover; 18. Bearing 1; 19. Bearing 2; 10. Isolation gasket; 10. Support member; 11. Sealing component; 12. Annular sealing body; 13. Support ring; 14. Sealing lip; 15. Sealing cavity. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] according to Figures 1 to 5 As shown, a permanent magnet synchronous worm geared motor for a hoist includes a trolley housing 1 with mounting holes 101. A support member 15 is fixedly installed within the mounting holes 101, and one end of the support member 15 is rotatably connected to a running wheel. An outer cover 2 is fixedly connected to the trolley housing 1. A conical platform 204 protrudes outward from the outer side of the outer cover 2, and cylindrical platforms 205 are evenly distributed along the circumference of the conical platform 204. The cylindrical platforms 205 abut against the trolley housing 1, and one end of the conical platform 204 is embedded in the mounting hole 101 and abuts against the support member 15. The embedding of the conical platform 204 in the mounting hole 101 and its abutment against the support member 15 improves the installation accuracy of the reduction shaft 9 and the running wheel, and reduces the axial vibration of the reduction shaft 9.

[0023] An integrally formed geared motor housing 3 is fixedly connected inside the outer casing 2. The geared motor housing 3 has a gear reduction cavity 301 and a motor cavity 302 with mutually perpendicular axes. The motor cavity 302 extends towards and communicates with the gear reduction cavity 301. The outer side of the motor cavity 302 abuts against the outer casing 2. At least two fixing posts 303 protrude outward from the outer side of the gear reduction cavity 301, and the fixing posts 303 abut against and are fixed to the outer casing 2. A permanent magnet synchronous motor is installed inside the motor cavity 302, and a worm gear reducer is installed inside the gear reduction cavity 301. A stator 4 is fixedly installed on the inner side of the motor cavity 302. A rotor 5 is rotatably connected in the middle of the stator 4. A motor shaft 6 is fixedly connected in the middle of the rotor 5. A motor end cover 7 is fixedly connected to one end of the motor cavity 302. An encoder 8 is fixedly connected to the outside of the motor end cover 7. A gear reduction shaft 9 is rotatably fixed inside the gear reduction cavity 301. A gear reduction gear 10 is fixedly connected to the gear reduction shaft 9, and the gear reduction gear 10 meshes with the motor shaft 6 for transmission. The encoder 8 can detect the position and angle information of the motor shaft 6 in real time and feed this information back to the control system. During operation, the control system can precisely control the position of the hoist based on the position feedback provided by encoder 8, ensuring it accurately reaches the target position and avoiding positional deviations. Encoder 8 can also monitor the motor speed in real time, allowing the control system to precisely adjust the hoist's speed for stable control, maintaining an appropriate speed under both heavy and light loads. The accurate feedback information provided by encoder 8 enables the control system to achieve more precise closed-loop control. The permanent magnet synchronous motor uses permanent magnets to generate a magnetic field, reducing excitation losses and improving motor efficiency, resulting in energy savings during hoist operation. The constant magnetic field provided by the permanent magnets allows the motor to maintain high efficiency under different load conditions. The permanent magnet synchronous worm geared motor can output greater power within the same volume and weight, providing sufficient power to the hoist without occupying excessive space, which is beneficial for the compact design and overall performance improvement of the hoist. The one-piece molded geared motor housing 3 has a gear reduction cavity 301 and a motor cavity 302, which integrates the gear reduction mechanism and the motor part together. It also reduces the connection and assembly errors between parts, and improves the overall reliability and stability. The outer side of the gear reduction cavity 301 protrudes outward and is fixed against the outer cover 2. The outer side of the motor cavity 302 is also fixed against the outer cover 2 to form a stable installation structure. This reduces the vibration of the geared motor during the operation of the sports car, and enables the sports car to start, stop and change speed smoothly, thus improving the safety and reliability of operation.

[0024] The outer casing 2, located on one side wall of the sports car shell 1, features inwardly protruding heat dissipation slats 201 and outwardly protruding heat dissipation fins 202. One end of the heat dissipation slats 201 abuts against the outer surface of the motor cavity 302, while the heat dissipation fins 202 have a gap with the sports car shell 1. The heat dissipation fins 202 are in an inclined arc shape, and the heat dissipation slats 201 and heat dissipation fins 202 are arranged intersectingly. The heat dissipation slats 201 on the outer casing 2 abut against the motor cavity 302, effectively transferring the heat generated by the motor to the outer casing 2. The inclined arrangement of the heat dissipation fins 202 and their intersection with the heat dissipation slats 201 increases the heat dissipation area and improves heat dissipation efficiency. The gap between the heat dissipation fins 202 and the sports car shell 1 facilitates airflow, further enhancing the heat dissipation effect, ensuring the motor operates within its normal operating temperature range, and extending the motor's service life.

[0025] One end of the reduction chamber 301 is fixedly connected to the reduction end cover 11. The reduction shaft 9 includes a first mounting part 901, a fixing part 902, a second mounting part 903, a third mounting part 904, and a connecting part 905. A bearing 12 is fixedly connected between the first mounting part 901 and the reduction end cover 11. A bearing 13 is fixedly connected between the third mounting part 904 and the reduction chamber 301. A reduction gear 10 is fixedly connected to the second mounting part 903. The two ends of the fixing part 902 abut against the bearing 12 and the reduction gear 10, respectively. An isolation gasket 14 is provided between the reduction gear 10 and the bearing 13. The connecting part 905 extends out of the outer cover 2. There are three fixing posts 303, which are evenly distributed around the circumference of the reduction chamber 301. A boss 203 is provided inside the outer cover 2. The fixing posts 303 and the boss 203 are fixedly connected by fasteners. The boss 203 and the conical platform 204 are coaxial.

[0026] The motor housing 302 includes a motor mounting part 3021, a fixed mounting part 3022, and a gear mounting part 3023. The motor mounting part 3021 houses the rotor 5 and the stator 4. The motor shaft 6 passes through the fixed mounting part 3022 and extends into the gear mounting part 3023 to mesh with the reduction gear 10 for transmission. A sealing component 16 is provided on the fixed mounting part 3022. The sealing component 16 includes an annular sealing body 1601, which protrudes with support rings 1602 of varying heights and a wavy sealing lip 1603. The length of the sealing lip 1603 is less than the length of the support rings 1602, and a sealing cavity 1604 exists between the sealing lip 1603 and the support rings 1602. The sealing component 16 employs a combination design of the wavy, zigzag-shaped sealing lip 1603 and the support rings 1602, which isolates external contamination while suppressing axial vibration, improving the overall operational stability and component lifespan.

[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A permanent magnet synchronous worm geared motor for a hoist, comprising a carriage housing (1) and an outer cover (2) fixedly connected to the carriage housing (1), characterized in that: An integrally formed geared motor housing (3) is fixedly connected inside the outer casing (2). The geared motor housing (3) has a geared cavity (301) and a motor cavity (302) with their axes perpendicular to each other. The motor cavity (302) extends toward the geared cavity (301) and is interconnected with it. The outer side of the motor cavity (302) abuts against the outer casing (2). At least two fixing posts (303) protrude outward from the outer side of the geared cavity (301). The fixing posts (303) abut against and are fixed to the outer casing (2). A stator (4) is fixedly installed on the inner side of the motor cavity (302). A rotor (5) is rotatably connected in the middle of the stator (4). A motor shaft (6) is fixedly connected in the middle of the rotor (5). A motor end cover (7) is fixedly connected to one end of the motor cavity (302). An encoder (8) is fixedly connected to the outside of the motor end cover (7). A reduction shaft (9) is rotatably fixed inside the reduction cavity (301). A reduction gear (10) is fixedly connected on the reduction shaft (9). The reduction gear (10) and the motor shaft (6) mesh and transmit power.

2. The permanent magnet synchronous worm geared motor for a hoist according to claim 1, characterized in that: The outer cover (2) has a heat dissipation strip (201) protruding inward and a heat dissipation fin (202) protruding outward on the side wall of the sports car shell (1). One end of the heat dissipation strip (201) abuts against the outer side of the motor cavity (302), and the heat dissipation fin (202) has a gap with the sports car shell (1).

3. A permanent magnet synchronous worm geared motor for a hoist according to claim 2, characterized in that: The heat dissipation fins (202) are in the shape of an inclined arc, and the heat dissipation strips (201) are arranged to cross the heat dissipation fins (202).

4. A permanent magnet synchronous worm geared motor for a hoist according to any one of claims 1 to 3, characterized in that: One end of the deceleration chamber (301) is fixedly connected to the deceleration end cover (11). The deceleration shaft (9) includes a first mounting part (901), a fixing part (902), a second mounting part (903), a third mounting part (904), and a connecting part (905) in sequence. A bearing (12) is fixedly connected between the first mounting part (901) and the deceleration end cover (11). A bearing (13) is fixedly connected between the third mounting part (904) and the deceleration chamber (301). A deceleration gear (10) is fixedly connected on the second mounting part (903). The two ends of the fixing part (902) abut against the bearing (12) and the deceleration gear (10) respectively. An isolation gasket (14) is provided between the deceleration gear (10) and the bearing (13). The connecting part (905) extends out of the outer cover (2).

5. A permanent magnet synchronous worm geared motor for a hoist according to claim 4, characterized in that: The fixed posts (303) are three in number and are evenly distributed around the deceleration cavity (301). A boss (203) is provided inside the outer cover (2). The fixed posts (303) and the boss (203) are fixedly connected by fasteners.

6. A permanent magnet synchronous worm geared motor for a hoist according to claim 5, characterized in that: The outer cover (2) has a conical platform (204) protruding outward on the outer side. The conical platform (204) and the boss (203) are coaxial. The outer cover (2) has a cylindrical platform (205) protruding outward along the circumference of the conical platform (204). The cylindrical platform (205) abuts against the sports car shell (1). The sports car shell (1) has a mounting hole (101). A support member (15) is fixedly installed in the mounting hole (101). One end of the conical platform (204) is embedded in the mounting hole (101) and abuts against the support member (15).

7. A permanent magnet synchronous worm geared motor for a hoist according to any one of claims 1 to 3, characterized in that: The motor cavity (302) includes a motor mounting part (3021), a fixed mounting part (3022), and a gear mounting part (3023). The motor mounting part (3021) is equipped with a rotor (5) and a stator (4). The motor shaft (6) passes through the fixed mounting part (3022) and extends into the gear mounting part (3023) to mesh with the reduction gear (10) for transmission. A sealing component (16) is provided on the fixed mounting part (3022).

8. A permanent magnet synchronous worm geared motor for a hoist according to claim 7, characterized in that: The sealing component (16) includes an annular sealing body (1601), which has protruding support rings (1602) of varying heights and a wavy sealing lip (1603). The length of the sealing lip (1603) is less than the length of the support ring (1602), and there is a sealing cavity (1604) between the sealing lip (1603) and the support ring (1602).

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