Permanent magnet motor

Abstract

The utility model relates to the technical field of speed -reducing motor, specifically disclose a permanent magnet speed -reducing motor. The permanent magnet speed -reducing motor includes parallel shaft four -stage transmission reduction gearbox, high -efficient brushless DC permanent magnet motor and cooling system, four -stage transmission shafts are parallel arrangement, and the motor is directly connected through the mounting flange structure with the reduction gearbox, and the cooling system realizes water flow cooling through the tank cover water guide groove and shell drain hole. The utility model structure is compact, and the speed ratio is big, and the transmission efficiency is high, and the heat dissipation is good.

Description

Technical Field

[0001] This utility model belongs to the field of geared motor technology, specifically relating to a permanent magnet geared motor. Background Technology

[0002] A geared motor is an energy conversion device that converts high-speed, low-torque mechanical energy into low-speed, high-torque mechanical energy. It typically uses multi-stage gear transmission and achieves the required output characteristics through a preset transmission ratio.

[0003] However, conventional geared motors have several technical drawbacks in practical applications: First, due to structural limitations and transmission efficiency, their overall transmission ratio is difficult to make very large; blindly increasing the speed ratio will lead to a significant decrease in transmission efficiency. Second, the efficiency of the matched motors in converting electrical energy into mechanical energy is generally low, and most products fail to meet the Level 3 energy efficiency standard, resulting in high power consumption during operation. Third, during operation, the overall temperature rise is high due to gear transmission friction and the motor's own heat generation, affecting component lifespan and operational reliability. In addition, traditional motors and gearboxes use separate flange connections, which are not compact enough and occupy a large amount of space.

[0004] Therefore, there is a demand in the existing technology for geared motors with more compact structure, larger transmission ratio, higher energy efficiency and better heat dissipation. Utility Model Content

[0005] This utility model addresses the deficiencies in existing technologies by providing a permanent magnet geared motor that solves problems such as small speed ratio, low transmission efficiency, large size, insufficient heat dissipation, and low motor energy efficiency in existing geared motors.

[0006] To solve the above-mentioned technical problems, this utility model is implemented as follows: This utility model embodiment provides a permanent magnet geared motor, including a parallel shaft four-stage transmission gearbox, a high-efficiency brushless DC permanent magnet motor, and a cooling system; The parallel shaft four-stage transmission reducer includes a first-stage transmission mechanism, a second-stage transmission mechanism, a third-stage transmission mechanism, and a fourth-stage transmission mechanism. Each stage of the transmission mechanism includes a pinion and a large gear, and the axes of all transmission shafts are parallel to each other. The high-efficiency brushless DC permanent magnet motor is directly fixed to the mounting flange structure integrally formed on the gearbox cover, without an independent motor flange. The rotor gear shaft of the motor passes through the mounting flange structure and extends into the gearbox to mesh with the primary transmission mechanism. The cooling system includes a water flow channel located at the gearbox output shaft position, a water guide groove formed on the gearbox cover, and a drain hole formed on the machine housing. Cooling water flows in from the water flow channel, is guided to the machine housing through the water guide groove, and is discharged from the drain hole.

[0007] Furthermore, the high-efficiency brushless DC permanent magnet motor is a Class 1 energy efficiency motor.

[0008] Furthermore, the mounting flange structure is integrated into the gearbox cover, and the motor housing is directly mounted on the mounting flange structure.

[0009] Furthermore, the water guide groove is formed on the outer surface of the cover and is used to guide the cooling water to the inner wall of the machine casing.

[0010] Furthermore, the drain hole is located at the bottom of the casing and is used to drain cooling water.

[0011] Compared with the prior art, this utility model has significant advantages and beneficial effects, as detailed below: (1) Compact structure and small size: By adopting the direct assembly method of sharing a flange (mounting flange structure) between the motor and the gearbox, the independent motor flange is eliminated, which significantly reduces the overall structural size and saves installation space.

[0012] (2) Large speed ratio and sufficient output: The parallel shaft four-stage transmission structure is adopted, which realizes a large total transmission ratio, thus enabling the output of greater torque.

[0013] (3) High energy efficiency and energy saving: It adopts a high-efficiency brushless DC permanent magnet motor, which has a high efficiency of converting electrical energy into mechanical energy and can reach the first-level energy efficiency standard, effectively reducing the power consumption during operation.

[0014] (4) Good heat dissipation performance and long service life: Through the designed cooling system (water flow channel, water guide groove, drain hole), the gearbox and the whole machine shell are effectively cooled by the flow of water, which ensures that the product operates at low temperature, delays the aging of components, and extends the service life.

[0015] (5) Reliable operation: The parallel shaft structure is stable, the transmission efficiency is high, and the overall structure is compact and reliable, making the product run more safely and smoothly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 A three-dimensional structural diagram of the permanent magnet geared motor provided by this utility model; Figure 2 A schematic cross-sectional view of the permanent magnet geared motor provided by this utility model; Figure 3A schematic diagram of the assembly structure of the four-stage gear transmission mechanism provided by this utility model; Figure 4 A three-dimensional structural diagram of the gearbox cover provided by this utility model; Figure 5 This is a side view of the permanent magnet geared motor provided by this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figures 1 to 3 As shown, this utility model provides a permanent magnet geared motor, including a parallel shaft four-stage transmission gearbox, a high-efficiency brushless DC permanent magnet motor 1, and a cooling system.

[0019] The parallel-shaft four-stage transmission reducer is equipped with a four-stage gear transmission mechanism, and the axes of all transmission shafts are parallel to each other. Specifically, it includes: Primary transmission mechanism: The motor rotor gear shaft 1a serves as the primary pinion, meshing with the primary transmission gear 2. In a specific embodiment, the primary pinion and the primary transmission gear 2 have 9 and 43 teeth respectively, and both have a module of 0.6.

[0020] Secondary transmission mechanism: The secondary transmission pinion 3, which is coaxial with the primary transmission gear 2, meshes with the secondary transmission large gear 4. In a specific embodiment, the number of teeth of the secondary transmission pinion 3 and the secondary transmission large gear 4 are 11 and 47 respectively, and the module of both is 0.8.

[0021] The three-stage transmission mechanism consists of a three-stage transmission pinion 5 coaxial with the two-stage transmission large gear 4, which meshes with the three-stage transmission large gear 6. In a specific embodiment, the number of teeth of the three-stage transmission pinion 5 and the three-stage transmission large gear 6 are 16 and 43 respectively, and the module is 1 for both.

[0022] The fourth-stage transmission mechanism consists of a fourth-stage transmission pinion 7 coaxial with the third-stage transmission large gear 6, which meshes with the final output fourth-stage transmission large gear 8. In a specific embodiment, the fourth-stage transmission pinion 7 and the fourth-stage transmission large gear 8 have 10 and 39 teeth respectively, and both have a module of 1.5.

[0023] Power is input from the motor rotor gear shaft 1a, and after being reduced in stages by the four-stage gear pairs, the torque is significantly increased, and finally output by the output shaft 11 where the large gear 8 of the four-stage transmission is located.

[0024] Combined Figure 4 As shown, the high-efficiency brushless DC permanent magnet motor 1 is directly fixed to the mounting flange structure 9a of the gearbox cover 9 via its housing. This mounting flange structure 9a and the gearbox cover 9 are integrally molded, eliminating the need for a separate motor flange and resulting in a very compact structure. The motor's rotor gear shaft 1a directly passes through the through hole in the center of the mounting flange structure 9a and extends into the gearbox, serving as a pinion gear in the first stage of transmission, achieving direct power transmission with zero backlash.

[0025] The cooling system is used to ensure the low-temperature operation of the entire machine, and its working process is as follows: Combined Figure 4 , Figure 5 As shown, cooling water flows into the gearbox from the water flow channel at the shaft outlet (not shown separately in the figure), providing initial cooling to the high-speed rotating gears and bearings. Subsequently, the water flow is collected and guided by the water guide groove 9b in the gearbox cover, allowing it to flow along the inner wall of the housing 10. Finally, the cooling water carrying heat is discharged through the housing drain hole 10a at the bottom of the housing 10, forming an effective and continuous cooling cycle to ensure that the temperature rise of each component remains at a low level.

[0026] Through the above specific embodiments, this utility model successfully integrates high-ratio transmission, high-efficiency motor and active water cooling technology into a compact structure, achieving high efficiency, energy saving, low temperature and long service life.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A permanent magnet geared motor, characterized in that: Includes a parallel-shaft four-stage transmission gearbox, a high-efficiency brushless DC permanent magnet motor, and a cooling system; The parallel shaft four-stage transmission reducer includes a first-stage transmission mechanism, a second-stage transmission mechanism, a third-stage transmission mechanism, and a fourth-stage transmission mechanism. Each stage of the transmission mechanism includes a pinion and a large gear, and the axes of all transmission shafts are parallel to each other. The high-efficiency brushless DC permanent magnet motor is directly fixed by a mounting flange structure integrally formed on the gearbox cover, without an independent motor flange. The rotor gear shaft of the motor passes through the mounting flange structure and extends into the gearbox to mesh with the first-stage transmission mechanism. The cooling system includes a water flow channel located at the gearbox output shaft position, a water guide groove formed on the gearbox cover, and a drain hole formed on the machine housing. Cooling water flows in from the water flow channel, is guided to the machine housing through the water guide groove, and is discharged from the drain hole.

2. The permanent magnet geared motor as described in claim 1, characterized in that: The high-efficiency brushless DC permanent magnet motor is a Class 1 energy efficiency motor.

3. The permanent magnet geared motor as described in claim 1, characterized in that: The mounting flange structure is integrated on the gearbox cover, and the motor housing is directly mounted on the mounting flange structure.

4. The permanent magnet geared motor as described in claim 1, characterized in that: The water guide groove is formed on the outer surface of the box cover and is used to guide the cooling water to the inner wall of the whole machine casing.

5. The permanent magnet geared motor as described in claim 1, characterized in that: The drain hole is located at the bottom of the casing and is used to drain the cooling water.

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