Two-section type motor shaft assembly of new energy automobile motor

Abstract

The utility model discloses a two-section type motor shaft assembly of a new energy automobile motor, which comprises a connecting shaft section, a motor main shaft penetrates through the connecting shaft section, a first fan blade is arranged on the right side of the connecting shaft section, a dustproof net is arranged on the right side of the first fan blade, a fan box is arranged on the outer side of the first fan blade, and a tank door is hinged to the surface of the fan box. A cooling tank is arranged inside the connecting shaft section, a water tank is fixed above the connecting shaft section, a liquid inlet is formed in the top end of the water tank, a filter screen is fixed inside the water tank, a water inlet pipe is arranged above the cooling tank, a liquid outlet is formed in the bottom end of the cooling tank, and the water inlet pipe penetrates through the inner wall of the water tank. According to the cooling tank, cooling water is poured into the liquid inlet, impurities of the cooling water are filtered through the filter screen, the situation that the impurities in the cooling tank are not easy to clean is avoided, and the cooling water is conveyed into the cooling tank through the water inlet pipe from top to bottom.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, and in particular to a two-section motor shaft assembly of a new energy vehicle motor. Background Art

[0002] The shaft is a cylindrical object that passes through the middle of the bearing, the middle of the wheel, or the middle of the gear, but a small part is square. The shaft is a mechanical part that supports the rotating parts and rotates with them to transmit motion, torque or bending moment. It is generally in the shape of a metal round rod, and each section can have a different diameter. The parts that rotate in the machine are mounted on the shaft. Among them, the motor shaft is a component that is coaxially arranged inside the motor stator and fixedly installed with the motor stator, and is used to output the motor torque.

[0003] The patent specification with the announcement number CN212486298U discloses a motor with a wear-resistant motor shaft, including a motor and a motor shaft with a two-stage structure, wherein the motor shaft includes an inner shaft and an outer shaft, and also includes an anti-wear mechanism, wherein the anti-wear mechanism includes an anti-centrifugal component adapted to the inner shaft and the outer shaft. The utility model effectively ensures the heat insulation of the motor shaft and effectively avoids the wear caused by contact between the motor shafts at both ends by setting an anti-wear mechanism sleeved on the inner shaft and the outer shaft that are in two stages and do not contact each other, and the centrifugal rotation of the device is more stable, the replacement and use are more convenient, and the service life is longer. Therefore, the utility model effectively solves the problem of wear between the two-stage motor shaft and the transition shaft, and realizes a motor with a wear-resistant motor shaft.

[0004] However, in the implementation of relevant technologies, it was found that the above-designed new energy vehicle drive motor bearing assembly has the following problems: the above-mentioned technology effectively ensures the heat insulation of the motor shaft by arranging an anti-wear mechanism sleeved on the inner shaft and outer shaft that are in two stages and do not contact each other, and effectively avoids the wear of the motor shafts at both ends caused by contact, but ignores the fact that the motor will also generate a lot of heat during use, which can easily cause the internal motor shaft to burn, thereby reducing the working effect. In view of this, a two-stage motor shaft assembly for a new energy vehicle motor is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a two-stage motor shaft assembly for a new energy vehicle motor.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a two-section motor shaft assembly of a new energy vehicle motor, comprising a connecting shaft section, the motor main shaft is penetrated inside the connecting shaft section, a fan blade 1 is arranged on the right side of the connecting shaft section, a dustproof net is arranged on the right side of the fan blade 1, a fan box is arranged on the outer side of the fan blade 1, and a tank door is hinged on the surface of the fan box;

[0007] A cooling tank is provided inside the connecting shaft section, a water tank is fixed above the connecting shaft section, a liquid inlet is provided at the top of the water tank, a filter is fixed inside the water tank, a water inlet pipe is provided above the cooling tank, and a liquid outlet is provided at the bottom of the cooling tank.

[0008] As a further description of the above technical solution: the water inlet pipe runs through the inner wall of the water tank, a motor is connected to one side of the cooling tank, a motor box is arranged on the outside of the motor, and the interior of the motor box is a hollow structure to facilitate internal and external air circulation and improve heat dissipation efficiency.

[0009] As a further description of the above technical solution: a fan blade 2 is arranged on the outer side of the front end of the motor main shaft through a bearing, a heat dissipation tube is arranged on the outer side of the fan blade 2, a shaft section is fixed on one side of the motor box, and the fan blade 2 utilizes the rotating shaft of the motor to rotate while dissipating heat, thereby enhancing the heat dissipation effect.

[0010] As a further description of the above technical solution: a shock-absorbing rubber is fixed to the inner wall of the shaft section, a buffer spring is fixed to one side of the shock-absorbing rubber, and a rubber pad is fixed to one side of the buffer spring. This arrangement can provide a certain shock-absorbing effect to the device.

[0011] As a further description of the above technical solution: the rubber pad fits tightly with the motor main shaft, and a fixing ring is fixed to the outer side of the shaft section. By providing the rubber pad, the friction caused by the vibration of the motor can be prevented from reducing the life of the motor main shaft.

[0012] As a further description of the above technical solution: the outer surface of the motor box is provided with heat dissipation holes, the inner wall of the motor box is fixed with sound insulation cotton, and the surface of the heat dissipation tube is provided with ventilation holes. The sound insulation cotton provides a certain sound insulation effect, and the ventilation holes can allow internal and external air to circulate, thereby improving the heat dissipation effect.

[0013] The utility model has the following beneficial effects:

[0014] 1) Pour cooling water into the liquid inlet, and the cooling water will filter impurities through the filter to avoid impurities remaining in the cooling tank and making it difficult to clean. The cooling water is transported from top to bottom through the water inlet pipe into the cooling tank;

[0015] 2) When the fan blades 1 and 2 rotate, the wind force is generated to absorb the heat in the motor and dissipate it through the heat dissipation holes. Therefore, when the motor is rotating, the fan blades 1 and 2 use the motor shaft to rotate to dissipate heat at the same time, thereby enhancing the heat dissipation effect and preventing the equipment from being affected by heat during long-term operation, resulting in poor working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal split structure of the device of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the device of the utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Motor main shaft; 2. Shaft section; 3. Fixing ring; 4. Motor box; 5. Water tank; 6. Filter; 7. Liquid inlet; 8. Connecting shaft section; 9. Tank door; 10. Ventilation holes; 11. Heat dissipation holes; 12. Motor; 13. Water inlet pipe; 14. Liquid outlet; 15. Cooling tank; 16. Bearing; 17. Fan blade one; 18. Fan blade two; 19. Sound insulation cotton; 20. Shock-absorbing rubber; 21. Buffer spring; 22. Rubber pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1, refer to Figure 1-Figure 4 The utility model provides a two-stage motor shaft assembly of a new energy vehicle motor: comprising a connecting shaft section 8, the motor main shaft 1 is penetrated inside the connecting shaft section 8, a fan blade 17 is arranged on the right side of the connecting shaft section 8, a dustproof net is arranged on the right side of the fan blade 17, a fan box is arranged on the outer side of the fan blade 17, and a tank door 9 is hinged on the surface of the fan box. When the fan blade 17 rotates, wind force is generated to absorb the heat in the motor 12 and dissipate it through the dustproof net. The dustproof net also prevents dust from entering the internal equipment, thereby improving the service life of the work;

[0024] A cooling tank 15 is provided inside the connecting shaft section 8, a water tank 5 is fixed above the connecting shaft section 8, a liquid inlet 7 is provided at the top of the water tank 5, a filter screen 6 is fixed inside the water tank 5, a water inlet pipe 13 is provided above the cooling tank 15, and a liquid outlet 14 is provided at the bottom of the cooling tank 15. Cooling water is poured into the liquid inlet 7, and impurities are filtered out of the cooling water through the filter screen 6 to avoid impurities remaining in the cooling tank 15 that are difficult to clean. The cooling water is transported from top to bottom by the water inlet pipe 13 to the cooling tank 15, thereby enhancing the heat dissipation efficiency and increasing the service life of the internal equipment.

[0025] Embodiment 2: In addition to all the technical features of Embodiment 1, this embodiment also includes:

[0026] The water inlet pipe 13 passes through the inner wall of the water tank 5. The motor 12 is connected to one side of the cooling tank 15. The motor box 4 is arranged outside the motor 12. The inside of the motor box 4 is a hollow structure, which facilitates the circulation of air inside and outside and improves the heat dissipation efficiency.

[0027] A fan blade 18 is arranged on the outer side of the front end of the motor main shaft 1 through a bearing 16, and a heat dissipation tube is arranged on the outer side of the fan blade 18. A shaft section 2 is fixed to one side of the motor box 4. The fan blade 18 uses the rotating shaft of the motor 12 to rotate and dissipate heat at the same time, thereby enhancing the heat dissipation effect.

[0028] In the specific implementation, first, open the tank door 9, so that the inside and outside air circulate with the cooperation of the fan blade 17. When the motor 12 in the motor box 4 is working, it drives the motor main shaft 1 to rotate, and the motor main shaft 1 drives the bearing 16 to move. At the same time, the fan blade 2 18 and the fan blade 1 17 use the rotating shaft of the motor 12 to rotate at the same time to dissipate heat, thereby enhancing the heat dissipation effect. When the fan blade 17 rotates, the wind force generated absorbs the hot air in the motor 12 and is dissipated by the dustproof net. The dustproof net also prevents dust from entering the internal equipment, thereby improving the working efficiency. In order to prolong the service life, the shaft section 2 is fixed to one side of the motor box 4 by the fixing ring 3, the water inlet pipe 13 is connected to the water tank 5 on the connecting shaft end 8, and then cooling water is poured into the liquid inlet 7. The cooling water is filtered through the filter 6 to filter impurities to avoid impurities remaining in the cooling tank 15 and making it difficult to clean. The cooling water is transported from the water inlet pipe 13 to the cooling tank 15 from top to bottom, which enhances the heat dissipation efficiency and improves the service life of the internal equipment. Finally, after the work is completed, the liquid outlet 14 is opened, and the cooling water in the cooling tank 15 flows out from the liquid outlet 14.

[0029] Embodiment 3: In addition to all the technical features of Embodiment 1, this embodiment also includes:

[0030] A shock-absorbing rubber 20 is fixed to the inner wall of the shaft section 2, a buffer spring 21 is fixed to one side of the shock-absorbing rubber 20, and a rubber pad 22 is fixed to one side of the buffer spring 21. This arrangement can provide a certain shock-absorbing effect to the device.

[0031] The rubber pad 22 fits tightly with the motor main shaft 1 , and a fixing ring 3 is fixed to the outer side of the shaft section 2 . The rubber pad 22 can prevent the friction caused by the vibration of the motor 12 from reducing the life of the motor main shaft 1 .

[0032] The outer surface of the motor box 4 is provided with heat dissipation holes 11, the inner wall of the motor box 4 is fixed with sound insulation cotton 19, and the surface of the heat dissipation tube is provided with ventilation holes 10. The sound insulation cotton 19 provides a certain sound insulation effect, and the ventilation holes 10 allow the inside and outside air to circulate, thereby improving the heat dissipation effect.

[0033] In specific implementation, when running at high speed, the buffer spring 21 cooperates with the shock-absorbing rubber 20 to reduce the impact of shaking, which can provide a certain shock-absorbing effect for the device. The rubber pad 22 is set to avoid the friction caused by the vibration of the motor 12 to reduce the life of the motor shaft 1. When the fan blade 18 rotates, the wind force generated absorbs the heat in the motor 12 and dissipates it through the heat dissipation hole 11. Because the sound insulation cotton 19 is fixed inside the device, the sound insulation cotton 19 can provide a certain sound insulation effect. The air inside and outside can circulate through the ventilation hole 10 to improve the heat dissipation effect.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-stage motor shaft assembly for a new energy vehicle motor, characterized in that: include: A connecting shaft section (8), wherein a motor main shaft (1) is passed through the interior of the connecting shaft section (8), a fan blade (17) is arranged on the right side of the connecting shaft section (8), a dustproof net is arranged on the right side of the fan blade (17), a fan box is arranged on the outer side of the fan blade (17), and a tank door (9) is hingedly connected to the surface of the fan box; A cooling tank (15) is provided inside the connecting shaft section (8), a water tank (5) is fixed above the connecting shaft section (8), a liquid inlet (7) is provided at the top of the water tank (5), a filter screen (6) is fixed inside the water tank (5), a water inlet pipe (13) is provided above the cooling tank (15), and a liquid outlet (14) is provided at the bottom of the cooling tank (15).

2. The two-stage motor shaft assembly according to claim 1, characterized in that: The water inlet pipe (13) passes through the inner wall of the water tank (5); one side of the cooling tank (15) is connected to a motor (12); and a motor box (4) is provided on the outside of the motor (12).

3. The two-stage motor shaft assembly according to claim 2, characterized in that: A second fan blade (18) is arranged on the outside of the front end of the motor main shaft (1) via a bearing (16), a heat dissipation tube is arranged on the outside of the second fan blade (18), and a shaft section (2) is fixed on one side of the motor box (4).

4. The two-stage motor shaft assembly according to claim 3, characterized in that: A shock-absorbing rubber (20) is fixed to the inner wall of the shaft body section (2), a buffer spring (21) is fixed to one side of the shock-absorbing rubber (20), and a rubber pad (22) is fixed to one side of the buffer spring (21).

5. The two-stage motor shaft assembly according to claim 4, characterized in that: The rubber pad (22) is tightly fitted to the motor main shaft (1), and a fixing ring (3) is fixed to the outer side of the shaft body section (2).

6. The two-stage motor shaft assembly according to claim 3, characterized in that: The outer surface of the motor box (4) is provided with heat dissipation holes (11), the inner wall of the motor box (4) is fixed with sound insulation cotton (19), and the surface of the heat dissipation tube is provided with ventilation holes (10).

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