Novel lining oil pipe type motor rotor shaft

Abstract

The utility model discloses a novel lining oil pipe type motor rotor shaft, which comprises a first motor shaft and a second motor shaft, the first motor shaft and the second motor shaft are internally provided with oil cooling grooves, the oil cooling grooves are internally provided with lining oil pipes, and the lining oil pipes are arranged in the first motor shaft and the second motor shaft. An oil filling pipe is rotatably arranged at one end of the first motor shaft, a sealing supporting ring is fixedly installed at one end of the lining oil pipe and arranged between the lining oil pipe and the first motor shaft, the oil filling pipe is fixedly connected and communicated with the lining oil pipe, and the first motor shaft and the second motor shaft are connected through the lining oil pipe. Through the arrangement of the lining oil pipe, the throttling baffle and the adjusting assembly, the purpose that in order to achieve the optimal cooling effect, oil quantity distribution in the two motor shafts needs to be accurately controlled is achieved, and oil in the two motor shafts is evenly distributed by adjusting the position of the throttling baffle.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor shafts, in particular to a novel oil-lined tubular motor rotor shaft. Background Art

[0002] As the core rotating component of the motor, the design and manufacturing process of the motor rotor shaft are extremely critical. It not only bears the heavy task of transmitting torque and supporting the rotor, but also needs to maintain a stable structural form and excellent mechanical properties under high-speed rotation. Therefore, the rotor shaft is usually made of high-strength and high-toughness metal materials to ensure that it can withstand the challenges of various complex working conditions. During the design process, engineers need to comprehensively consider the strength, stiffness and dynamic balance of the rotor shaft to ensure the smoothness and efficiency of the motor during operation.

[0003] In order to further enhance the cooling and heat dissipation effect of the rotor shaft during operation, engineers usually drill holes on the side wall of the rotor shaft to inject cooling oil. This ingenious design makes full use of the good thermal conductivity of the oil. Through the circulation of the oil, the heat generated by the rotor shaft during operation can be effectively taken away, thereby reducing the temperature of the shaft. In this way, the thermal stress, fatigue and wear of the material caused by high temperature can be significantly reduced, thereby extending the service life of the rotor shaft and the motor. At the same time, a reasonable drilling layout and oil circulation system design are also crucial, which can further optimize the cooling effect and improve the overall operating efficiency and reliability of the motor. Through this comprehensive design optimization, the motor rotor shaft can maintain stable performance under various working conditions, providing a strong guarantee for the long-term stable operation of the motor.

[0004] Patent document CN104929692A discloses a rotor shaft suitable for rotating around its rotor axis. The rotor shaft includes a rotor cavity (120) configured to be concentric or quasi-concentric relative to the rotor axis (110) inside the rotor shaft (100), and a plurality of cooling holes extending radially or quasi-radially outward from the inside of the rotor shaft (100) to the outside. Each cooling hole (130) has a hole entrance position (160) and a distal hole exit portion (134), and the corresponding hole entrance position (160) is suitable for adjacent to the rotor cavity (120). At least one side or part of the side of the cooling hole entrance position is provided with an asymmetric edge fillet (150) to maximize the wall thickness between two adjacent cooling holes (130).

[0005] As in the prior art of the above patent, the above device has the following disadvantages by processing oil holes on the shaft: First, the traditional motor shaft oil hole processing method, that is, drilling holes on a solid shaft, is mainly based on the consideration of oil distribution and oil pressure. Since the oil hole diameter is designed to be small, the motor shaft mass is heavy and the moment of inertia is large, which slows down the instantaneous response speed. Secondly, there are many difficulties in the processing process, especially the realization of the oil blocking throttling structure. Due to the limitations of structural and processing factors, the throttling mechanism needs to be arranged in the inner cavity of the tube, and the traditional rotor shaft design cannot achieve this. Therefore, it is necessary to explore new design solutions and conduct a large number of simulation analysis verifications, which undoubtedly increases the complexity and challenge of the design. Finally, the position and aperture accuracy of the oil hole are difficult to guarantee, resulting in poor cooling and lubrication effects. In order to achieve the best cooling effect, it is necessary to accurately control the oil distribution, which requires accurate processing of the aperture and position. However, the traditional structure has limitations in this regard, and it is difficult to meet the requirements of precise processing, thus affecting the cooling and lubrication effect. Utility Model Content

[0006] The utility model aims to provide a novel oil-lined tube type motor rotor shaft to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of oil-lined tube type motor rotor shaft, comprising a first motor shaft and a second motor shaft, the first motor shaft and the second motor shaft are both provided with oil cooling grooves, the oil cooling grooves are provided with oil-lined tubes, one end of the first motor shaft is rotatably provided with an oil filling tube, one end of the oil-lined tube is fixedly installed with a sealing support ring, the sealing support ring is provided between the oil-lined tube and the first motor shaft, the oil filling tube is fixedly connected and communicated with the oil-lined tube, the first motor shaft and the second motor shaft are connected through the oil-lined tube, the side walls at both ends of the oil-lined tube are provided with a plurality of oil outlet holes, the side walls of the oil-lined tube are provided with a throttling baffle, the throttling baffle is provided between the plurality of oil outlet holes at both ends, and an adjusting component is provided between the throttling baffle and the oil-lined tube.

[0008] As a further description of the above technical solution: the adjusting assembly includes a threaded tube, the threaded tube is fixedly sleeved on the inner lining oil pipe, the throttling baffle is threadedly connected to the threaded tube, the top and bottom ends of the throttling baffle are fixedly installed with limit strips, the inner wall of the oil cooling tank is provided with two limit grooves, and the two limit strips are slidably connected to the limit grooves.

[0009] As a further description of the above technical solution: the side walls of the first motor shaft and the second motor shaft are both provided with oil drain holes, and the oil drain holes are connected to the oil outlet hole.

[0010] As a further description of the above technical solution: the first motor shaft and the second motor shaft are externally sleeved with a retaining ring, and the retaining ring is arranged on one side of the oil drain hole.

[0011] As a further description of the above technical solution: the first motor shaft and the second motor shaft are externally sleeved with a silicon steel sheet shell, magnetic isolation plates are fixedly installed at both ends of the silicon steel sheet shell, and guide grooves are opened on the side walls of the two magnetic isolation plates, and the guide grooves are opened on the outside of the oil drain hole.

[0012] As a further description of the above technical solution: both ends of the first motor shaft and the second motor shaft are sleeved with bearings.

[0013] The utility model provides a novel oil-lined tubular motor rotor shaft, which has the following beneficial effects:

[0014] 1. By opening an oil cooling groove inside the motor shaft, the motor shaft is made lighter, the motor shaft has a small moment of inertia, a fast transient response time, and simple control.

[0015] 2. By setting the inner lining oil pipe, throttle baffle and adjustment component, it is realized that in order to achieve the best cooling effect, the oil distribution inside the two motor shafts needs to be accurately controlled. By adjusting the position of the throttle baffle, the oil inside the two motor shafts is evenly distributed.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall cross-section three-dimensional structure of a new type of oil-lined pipe motor rotor shaft proposed in the utility model.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure between the throttling baffle and the regulating assembly of the utility model.

[0021] Legend:

[0022] 1. Silicon steel sheet shell; 2. Magnetic isolation plate; 3. First motor shaft; 4. Second motor shaft; 5. Oil cooling tank; 6. Lined oil pipe; 7. Oil filling pipe; 8. Sealing support ring; 9. Threaded pipe; 10. Throttle baffle; 11. Limit groove; 12. Limit strip; 13. Oil outlet hole; 14. Guide groove; 15. Retaining ring; 16. Bearing; 17. Oil drain hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-3 A novel oil-lined pipe type motor rotor shaft comprises a first motor shaft 3 and a second motor shaft 4, wherein the first motor shaft 3 and the second motor shaft 4 are both provided with an oil cooling groove 5, wherein an oil-lined pipe 6 is provided inside the oil cooling groove 5, an oil injection pipe 7 is rotatably provided at one end of the first motor shaft 3, a sealing support ring 8 is fixedly installed at one end of the oil-lined pipe 6, and the sealing support ring 8 is provided between the oil-lined pipe 6 and the first motor shaft 3, the oil injection pipe 7 is fixedly connected and communicated with the oil-lined pipe 6, the first motor shaft 3 and the second motor shaft 4 are connected through the oil-lined pipe 6, a plurality of oil outlet holes 13 are provided on the side walls at both ends of the oil-lined pipe 6, a throttling baffle 10 is provided on the side wall of the oil-lined pipe 6, and the throttling baffle 10 is provided on the side wall of the oil-lined pipe 6. The baffle 10 is arranged between multiple oil outlet holes 13 at both ends, and an adjustment component is arranged between the throttling baffle 10 and the inner lining oil pipe 6; an oil cooling groove 5 is opened inside the motor shaft, so that the motor shaft can be lightweight, the motor shaft has a small moment of inertia, a fast instantaneous response time, and simple control. When the motor shaft is running, the inside of the motor shaft is cooled down through the oil filling pipe 7, and the oil is directly introduced into the oil cooling groove 5 inside the motor shaft to dissipate the heat of the motor shaft, and then discharged through the external oil drain hole 17. The injected oil continuously cools down the inside of the motor shaft, and in order to achieve the best cooling effect, the oil distribution inside the two motor shafts needs to be accurately controlled, and the oil inside the two motor shafts is evenly distributed by adjusting the position of the throttling baffle 10.

[0025] As the preferred technical solution of this embodiment, the adjusting component includes a threaded tube 9, which is fixedly mounted on the inner lining oil pipe 6, and the throttling baffle 10 is threadedly connected to the threaded tube 9. The top and bottom ends of the throttling baffle 10 are fixedly installed with limit strips 12. The inner wall of the oil cooling groove 5 is provided with two limit grooves 11, and the two limit strips 12 are slidably connected to the limit grooves 11; by rotating the oil filling pipe 7, the internal threaded tube 9 can be rotated, and during the rotation of the threaded tube 9, the throttling baffle 10 can be moved left and right under the limiting guiding action of the limit strip 12.

[0026] As a preferred technical solution of the present embodiment, the side walls of the first motor shaft 3 and the second motor shaft 4 are both provided with an oil drain hole 17, and the oil drain hole 17 is connected with the oil outlet hole 13; after the oil flowing out of the oil outlet hole 13 of the lining oil pipe 6 cools down the inside of the motor shaft, it can be smoothly discharged through the oil drain hole 17, preventing waste oil from accumulating inside and realizing the injection of new oil and the replacement of old oil.

[0027] As a preferred technical solution of this embodiment, the first motor shaft 3 and the second motor shaft 4 are externally sleeved with a retaining ring 15 , and the retaining ring 15 is arranged on one side of the oil drain hole 17 ; the retaining ring 15 can preliminarily block the oil discharged from the oil drain hole 17 .

[0028] As a preferred technical solution of this embodiment, the first motor shaft 3 and the second motor shaft 4 are externally sleeved with a silicon steel sheet housing 1, and magnetic isolation plates 2 are fixedly installed at both ends of the silicon steel sheet housing 1. The side walls of the two magnetic isolation plates 2 are provided with guide grooves 14, and the guide grooves 14 are opened on the outside of the oil drain hole 17; the oil discharged from the oil drain hole 17 is guided out through the guide grooves 14 under the blocking action of the retaining ring 15.

[0029] As a preferred technical solution of this embodiment, both ends of the first motor shaft 3 and the second motor shaft 4 are sleeved with bearings 16; the bearings 16 can be used to connect the motor shafts and the device to ensure the normal operation and use of the motor shafts.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel oil-lined tubing type motor rotor shaft, comprising a first motor shaft (3) and a second motor shaft (4), characterized in that: The first motor shaft (3) and the second motor shaft (4) are both provided with an oil cooling groove (5), and an inner lining oil pipe (6) is provided inside the oil cooling groove (5). An oil filling pipe (7) is rotatably provided at one end of the first motor shaft (3), and a sealing support ring (8) is fixedly installed at one end of the inner lining oil pipe (6). The sealing support ring (8) is arranged between the inner lining oil pipe (6) and the first motor shaft (3). The oil filling pipe (7) is fixedly connected to and communicates with the inner lining oil pipe (6). The first motor shaft (3) and the second motor shaft (4) are connected through the inner lining oil pipe (6). The side walls at both ends of the inner lining oil pipe (6) are both provided with a plurality of oil outlet holes (13). The side walls of the inner lining oil pipe (6) are sleeved with a throttling baffle (10), and the throttling baffle (10) is arranged between the plurality of oil outlet holes (13) at both ends. An adjusting component is arranged between the throttling baffle (10) and the inner lining oil pipe (6).

2. The novel oil-lined tubing type motor rotor shaft according to claim 1 is characterized in that: The regulating assembly comprises a threaded tube (9), the threaded tube (9) is fixedly sleeved on the inner lining oil pipe (6), the throttling baffle (10) is threadedly connected to the threaded tube (9), the top and bottom ends of the throttling baffle (10) are fixedly installed with limit strips (12), the inner wall of the oil cooling groove (5) is provided with two limit grooves (11), and the two limit strips (12) are slidably connected to the limit grooves (11).

3. The novel oil-lined tubing type motor rotor shaft according to claim 1 is characterized in that: The side walls of the first motor shaft (3) and the second motor shaft (4) are both provided with oil drain holes (17), and the oil drain holes (17) are connected to the oil outlet hole (13).

4. The novel oil-lined tubing type motor rotor shaft according to claim 1 is characterized in that: The first motor shaft (3) and the second motor shaft (4) are externally sleeved with a retaining ring (15), and the retaining ring (15) is arranged on one side of the oil drain hole (17).

5. The novel oil-lined tubing type motor rotor shaft according to claim 1 is characterized in that: The first motor shaft (3) and the second motor shaft (4) are externally sleeved with a silicon steel sheet housing (1), magnetic isolation plates (2) are fixedly mounted at both ends of the silicon steel sheet housing (1), and guide grooves (14) are provided on the side walls of the two magnetic isolation plates (2), and the guide grooves (14) are provided on the outside of the oil drain hole (17).

6. The novel oil-lined tubing type motor rotor shaft according to claim 1 is characterized in that: Both ends of the first motor shaft (3) and the second motor shaft (4) are sleeved with bearings (16).

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