Parallel shaft type permanent magnet synchronous motor
The dual-synchronous motor configuration with a 1:5 gear ratio and protective ventilation system addresses the issue of insufficient torque and overheating in permanent magnet synchronous motors by increasing torque and improving thermal management and protection.
Patent Information
- Application Number
- CN202422294629.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Existing permanent magnet synchronous motors have too little torque when the load is large, which makes them prone to heat damage.
Adopting a parallel-axis structure, the power combination of the two synchronous motor bodies increases the output torque of the spindle, and a closed space and blower are provided outside the gear and toothed belt for cooling.
It improves the output torque of the motor under large loads, avoids wear and overheating of gears and toothed belts, and improves the reliability and service life of the motor.
Smart Images
Figure CN223109814U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of permanent magnet synchronous motors, and particularly relates to a coaxial permanent magnet synchronous motor. Background Art
[0002] The permanent magnet synchronous motor uses permanent magnets to provide excitation, making the motor structure relatively simple, reducing processing and assembly costs, and eliminating the slip rings and brushes that are prone to problems, improving the reliability of motor operation; also, because there is no need for excitation current and no excitation loss, the efficiency and power density of the motor are improved. The permanent magnet synchronous motor is composed of components such as a stator, a rotor, and an end cover.
[0003] The existing permanent magnet synchronous motors mainly have the following disadvantages during use: often a single motor is used as the output power, and there is a problem of too small torque when the load is large, resulting in the motor being prone to heat and damage. Therefore, a new type of permanent magnet synchronous motor is urgently needed. Summary of the Utility Model
[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0005] For this reason, the technical solution adopted by the utility model is as follows: a coaxial permanent magnet synchronous motor, including: a main body mechanism, the main body mechanism includes a bottom plate, synchronous motor main bodies symmetrically fixed on the top of the bottom plate, a first gear installed on the shaft of the synchronous motor main body, a plurality of brackets fixed on the top of the bottom plate, a main shaft installed on the brackets, a second gear fixedly sleeved on the main shaft, a toothed belt with one end sleeved on the first gear and the other end sleeved on the second gear, a protective shell embedded in the top of the bottom plate, and air blowing members symmetrically installed on the protective shell.
[0006] The utility model can be further configured in a preferred example as: the bracket includes a support rod fixed on the top of the bottom plate and a bearing fixed on the inner side surface of the support rod, the outer ring of the bearing is fixed to the support rod, and the inner ring is fixed to the outer side surface of the main shaft.
[0007] The utility model can be further configured in a preferred example as: the transmission ratio of the first gear to the second gear is 1:5.
[0008] The utility model can be further configured in a preferred example as: a limiting frame is fixed on the top of the bottom plate, and the bottom end of the protective shell is embedded in the limiting frame.
[0009] The utility model can be further configured in a preferred example as: the air blowing member includes a pipe body fixed on the top of the protective shell and communicating with the inner cavity of the protective shell, a high-speed fan installed on the inner wall of the pipe body, and a filter screen fixed on the inner wall of the pipe body.
[0010] In a preferred embodiment, the present utility model can be further configured such that ventilation holes are arranged in an array on both sides of the protective shell.
[0011] By adopting the above technical solutions, the beneficial effects achieved by the present utility model are as follows:
[0012] 1. In the present utility model, two synchronous motor bodies are symmetrically fixed on the bottom plate, a bracket is arranged between the two synchronous motor bodies, a main shaft is fixed on the bracket, a second gear is fixedly sleeved on the main shaft, a first gear is fixedly sleeved on the shafts of the two synchronous motors, and the first gears on the two synchronous motors are both meshed with the second gear through a toothed belt. Through the above arrangement, the power of the two synchronous motor bodies can be output through one main shaft, greatly increasing the output torque, reducing the occupied space of the synchronous motor bodies, and improving the practical performance.
[0013] 2. In the present utility model, a protective shell is fitted on the bottom plate. Through the setting of the protective shell, a closed space can be formed outside the first gear, the second gear, and the toothed belt, thereby preventing dust and impurities from adhering to the first gear, the second gear, and the toothed belt and affecting their service life. In addition, a blowing member is installed on the protective shell, and the outside air is accelerated and blown into the protective shell by the blowing member to increase the air flow rate inside the protective shell, which can effectively cool the first gear, the second gear, and the toothed belt and avoid the phenomenon of overheating of the first gear, the second gear, and the toothed belt. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural view of the present utility model;
[0015] Figure 2 is an exploded structural view of the present utility model;
[0016] Figure 3 is a partial structural view of the present utility model;
[0017] Figure 4 is a cross-sectional view of the protective shell of the present utility model.
[0018] Reference Numerals:
[0019] 100, main body mechanism; 110, bottom plate; 111, limit frame; 120, synchronous motor body; 130, first gear; 140, bracket; 141, support rod; 142, bearing; 150, main shaft; 160, second gear; 170, toothed belt; 180, protective shell; 1181, ventilation hole; 190, blowing member; 191, pipe body; 192, high-speed fan; 193, filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] To make the objectives, technical solutions, and advantages of the present utility model clearer and more explicit, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other.
[0021] Some embodiments of the present utility model will be described below with reference to the accompanying drawings.
[0022] Embodiment 1:
[0023] Combined with Figures 1-4 As shown, this embodiment provides a coaxial permanent magnet synchronous motor, including: a main body mechanism 100.
[0024] Among them, the main body mechanism 100 includes a bottom plate 110, a synchronous motor main body 120 symmetrically fixed to the top end of the bottom plate 110, a first gear 130 installed on the shaft of the synchronous motor main body 120, a plurality of brackets 140 fixed to the top end of the bottom plate 110, a main shaft 150 installed on the brackets 140, a second gear 160 fixedly sleeved on the main shaft 150, a toothed belt 170 with one end sleeved on the first gear 130 and the other end sleeved on the second gear 160, a protective shell 180 fitted on the top end of the bottom plate 110, and blower parts 190 symmetrically installed on the protective shell 180.
[0025] The bottom plate 110 is used to install other components and ensure the stability of each component. Two synchronous motors are provided to drive the main shaft 150 to rotate simultaneously, increasing the output torque of the main shaft 150. The brackets 140 are used to install the main shaft 150 and ensure the stability of the main shaft 150. The brackets 140 include support rods 141 fixed to the top end of the bottom plate 110 and bearings 142 fixed to the inner side surfaces of the support rods 141. The outer ring of the bearing 142 is fixed to the support rod 141, and the inner ring is fixed to the outer side surface of the main shaft 150, which not only ensures the stability of the main shaft 150 but also facilitates the rotation of the main shaft 150.
[0026] The second gear 160 is fixedly sleeved on the main shaft 150. The first gears 130 on both sides of the synchronous motors are meshed with the second gear 160 through the toothed belt 170. When the synchronous motors on both sides are started, the first gears 130 are driven to rotate. The rotation of the first gears 130 drives the second gear 160 to rotate through the toothed belt 170, thereby combining the power of the synchronous motors on both sides onto the main shaft 150 for output, which can greatly increase the output torque of the main shaft 150 and ensure the stable operation of the main shaft 150 under a large load.
[0027] In addition, the transmission ratio of the first gear 130 to the second gear 160 is 1:5, which can further increase the torque output by the main shaft 150.
[0028] The protective housing 180 is used to form a closed space outside the first gear 130, the second gear 160 and the toothed belt 170, thereby preventing dust and impurities from adhering to the first gear 130, the second gear 160 and the toothed belt 170 and affecting their service life. A limiting frame 111 is fixed at the top end of the bottom plate 110, and the bottom end of the protective housing 180 is fitted into the limiting frame 111 to ensure the stability of the protective housing 180. At the same time, ventilation holes 1181 are arranged in an array on both sides of the protective housing 180 for air flow between the inner cavity of the protective housing 180 and the external environment, so as to dissipate the heat generated when the first gear 130, the second gear 160 and the toothed belt 170 are running.
[0029] The air blowing member 190 includes a pipe body 191 fixed to the top end of the protective housing 180 and communicating with the inner cavity of the protective housing 180, a high-speed fan 192 installed on the inner wall of the pipe body 191, and a filter screen 193 fixed to the inner wall of the pipe body 191. The pipe body 191 is used to install the high-speed fan 192. The high-speed fan 192 faces the inner cavity of the protective housing 180 and is used to accelerate the intake of external air into the inner cavity of the protective housing 180, increasing the air flow rate in the inner cavity of the protective housing 180, and effectively cooling the first gear 130, the second gear 160 and the toothed belt 170. The filter screen 193 is used to filter the air entering the protective housing 180 to prevent dust and other impurities from entering.
[0030] The working principle and usage process of the present utility model: When in use, the end of the main shaft 150 is connected to the using equipment, and the synchronous motor main bodies 120 on both sides are started. At this time, the synchronous motor main bodies 120 on both sides rotate synchronously, driving the first gear 130 to rotate. The rotation of the first gear 130 drives the second gear 160 to rotate through the toothed belt 170, and the rotation of the second gear 160 drives the main shaft 150 to rotate. The main shaft 150 rotates to output power. In addition, when the main shaft 150 is running, the high-speed fan 192 is started to accelerate the blowing of external air into the inner cavity of the protective housing 180, and drive the hot air in the protective housing 180 to be discharged from the ventilation holes 1181, forming an air circulation to cool the first gear 130, the second gear 160 and the toothed belt 170.
[0031] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A coaxial permanent magnet synchronous motor, comprising: Main body mechanism (100), characterized in that the main body mechanism (100) includes a bottom plate (110), a synchronous motor main body (120) symmetrically fixed on the top end of the bottom plate (110), a first gear (130) installed on the shaft of the synchronous motor main body (120), a plurality of brackets (140) fixed on the top end of the bottom plate (110), a main shaft (150) installed on the brackets (140), a second gear (160) fixedly sleeved on the main shaft (150), a toothed belt (170) with one end sleeved on the first gear (130) and the other end sleeved on the second gear (160), a protective shell (180) fitted on the top end of the bottom plate (110), and blower parts (190) symmetrically installed on the protective shell (180).
2. The coaxial permanent magnet synchronous motor according to claim 1, wherein The bracket (140) includes a support rod (141) fixed on the top end of the bottom plate (110) and a bearing (142) fixed on the inner side surface of the support rod (141). The outer ring of the bearing (142) is fixed to the support rod (141), and the inner ring is fixed to the outer side surface of the main shaft (150).
3. The coaxial permanent magnet synchronous motor according to claim 1, characterized in that, The transmission ratio of the first gear (130) to the second gear (160) is 1:
5.
4. A coaxial permanent magnet synchronous motor according to claim 1, characterized in that, A limit frame (111) is fixed on the top end of the bottom plate (110), and the bottom end of the protective shell (180) is fitted in the limit frame (111).
5. The coaxial permanent magnet synchronous motor according to claim 1, characterized in that, The blower part (190) includes a pipe body (191) fixed on the top end of the protective shell (180) and communicating with the inner cavity of the protective shell (180), a high-speed fan (192) installed on the inner wall of the pipe body (191), and a filter screen (193) fixed on the inner wall of the pipe body (191).
6. The coaxial permanent magnet synchronous motor according to claim 1, characterized in that, Ventilation holes (1181) are arranged in an array on both sides of the protective shell (180).