Improved rotor shaft

Abstract

The utility model discloses an improved rotor shaft, which comprises a shaft body, a connecting sleeve, a support column and a pinch plate, the connecting sleeve and the pinch plate are mounted on the shaft body, the shaft body is provided with an iron core mounting step, the iron core mounting step is positioned between the connecting sleeve and the pinch plate, the connecting sleeve and the pinch plate are respectively positioned at two ends of the iron core mounting step, and the support column is mounted on the connecting sleeve. The supporting column is fixedly connected with the connecting sleeve, the supporting column is arranged on the buckle plate in a penetrating mode, the end, away from the connecting sleeve, of the supporting column is fixedly connected with a threaded column, the threaded column is in threaded connection with a nut, and the nut is connected with the side, away from the connecting sleeve, of the buckle plate in a clamped mode. The beneficial effects of the utility model are that the structure stability between the shaft body and the iron core can be effectively improved, and the advantage of good structure stability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor shafts, and particularly relates to an improved rotor shaft. Background Art

[0002] The motor rotor is the rotating part of the motor, including a rotor shaft, an iron core, and a permanent magnet. The iron core and the permanent magnet are fixedly installed on the rotor shaft. The rotor shaft can play a role in support and transmission, enabling the iron core and the permanent magnet to output power through the rotor shaft during rotation.

[0003] The Chinese patent application document with the publication number CN118487424A discloses a rotating shaft, which includes an input flow channel, a plurality of output flow channels, a plurality of diversion flow channels, and a closed space. The input flow channel extends along the axial direction of the rotating shaft, and the input end of the input flow channel is located at one end of the rotating shaft. The output flow channel extends along the radial direction of the rotating shaft, and the output end of the output flow channel is located on the outer peripheral surface of the rotating shaft. The diversion flow channels extend along the axial direction, and the plurality of diversion flow channels are connected in parallel with each other. The input flow channel is communicated with the plurality of output flow channels through the plurality of diversion flow channels, so that the cooling fluid flowing into the input flow channel can flow out from the plurality of output flow channels under the guidance of the plurality of diversion flow channels. The closed space is located between different diversion flow channels and is closed with respect to the input flow channel, the plurality of output flow channels, and the plurality of diversion flow channels. In this way, fluid pressure can be quickly established, and the rotating shaft can have lower cost and weight during operation, which is beneficial to the full cooling and lubrication of the target object by the cooling fluid.

[0004] With the increasing improvement of motor performance, higher requirements are also put forward for the structural stability of the motor rotor shaft. There is a problem of insufficient structural stability in the rotor shaft of the prior art. Summary of the Utility Model

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an improved rotor shaft, which includes a shaft body, a connecting sleeve, a support column, and a buckle plate. The improved rotor shaft has the advantage of good structural stability.

[0006] To achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0007] An improved rotor shaft includes a shaft body, a connecting sleeve, a support column, and a buckle plate. The connecting sleeve and the buckle plate are installed on the shaft body. The shaft body is provided with an iron core installation step, which is located between the connecting sleeve and the buckle plate. The connecting sleeve and the buckle plate are respectively located at both ends of the iron core installation step. The support column is fixedly connected to the connecting sleeve, and the support column passes through the buckle plate. A threaded column is fixedly connected to the end of the support column away from the connecting sleeve, and the threaded column is threadedly connected with a nut, and the nut is clamped to the side of the buckle plate away from the connecting sleeve.

[0008] Through such a setting, the structural stability between the shaft body and the iron core can be effectively improved, achieving the advantage of better structural stability.

[0009] Preferably, the iron core mounting step is provided with a flat position.

[0010] Through such a setting, the function of synchronous rotation of the iron core and the shaft body is realized, and thus power can be output through the shaft body.

[0011] Preferably, the shaft body is inserted through a connecting sleeve, the connecting sleeve is sleeved on the outer peripheral surface of the iron core mounting step, and the connecting sleeve is circumferentially clamped with the flat position.

[0012] Through such a setting, the structural stability between the iron core and the shaft body is improved.

[0013] Preferably, the shaft body is inserted through a buckle plate, the buckle plate is fixedly connected to the shaft body, the buckle plate is sleeved on the outer peripheral surface of the iron core mounting step, and the buckle plate is axially clamped with the flat position.

[0014] Through such a setting, the structural stability between the iron core and the shaft body is improved.

[0015] Preferably, a plurality of flat positions are provided, and the plurality of flat positions are evenly distributed circumferentially around the shaft body.

[0016] Through such a setting, the shaft body can be more stable during the rotation process.

[0017] Preferably, the shaft body is provided with an air inlet hole, the shaft body is provided with an air delivery hole communicating with the air inlet hole, the connecting sleeve is provided with a communication hole communicating with the air delivery hole, the support column is provided with an air supply hole communicating with the communication hole, the buckle plate is provided with an exhaust hole communicating with the air supply hole, the exhaust hole extends in a direction away from the support column, and one end of the exhaust hole away from the support column communicates with the outer peripheral surface of the buckle plate.

[0018] Through such a setting, during the air flow in the exhaust hole, the air in the air inlet hole will be sucked in through the air supply hole, the communication hole, and the air delivery hole, so that there is continuous air flow in the shaft body and the support column during the rotation of the shaft body. After absorbing heat through the flowing air and then discharging, the temperature of the shaft body, the support column, and the iron core can be reduced, achieving the effect of controlling the temperature of the motor rotor shaft.

[0019] Preferably, the two ends of the shaft body are respectively provided with a rotation position and an output end.

[0020] Through such a setting, it is convenient to measure the rotation angle of the shaft body through a resolver.

[0021] Preferably, there are an oil seal position and a first bearing position between the output end and the iron core mounting step, and the first bearing position is provided with a spring groove.

[0022] With such a setting, it plays the role of facilitating the installation of the bearing and the snap ring.

[0023] Preferably, a second bearing position is provided between the rotation displacement position and the iron core mounting step.

[0024] With such a setting, it plays the role of facilitating the installation of the bearing.

[0025] Preferably, the output end is provided with a spline.

[0026] With such a setting, it plays the role of facilitating the installation of the gear.

[0027] Compared with the prior art, the utility model has achieved beneficial technical effects:

[0028] 1. Install the iron core of the rotor on the iron core mounting step, pass the support column through the iron core, provide support forces to both ends of the support column through the connecting sleeve and the buckle plate, and then provide support force to the iron core through the support column, so as to effectively improve the structural stability between the shaft body and the iron core, achieving the advantage of better structural stability.

[0029] 2. Tighten the nut, apply a pulling force towards the iron core mounting step to the buckle plate and the connecting sleeve through the nut and the threaded column, so that the buckle plate and the connecting sleeve clamp the iron core installed on the iron core mounting step, and then provide axial limit to the connecting sleeve and the iron core through the buckle plate fixed on the shaft body, realizing the function of fixing the iron core and effectively improving the stability of the iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural view of an improved rotor shaft in an embodiment of the utility model;

[0031] Figure 2 is a cross-sectional view of an improved rotor shaft in an embodiment of the utility model.

[0032] Among them, the technical features represented by each reference numeral are as follows:

[0033] 11. Shaft body; 12. Iron core mounting step; 13. Flat position; 14. Rotation displacement position; 15. Output end; 16. First bearing position; 17. Spring groove; 18. Second bearing position; 19. Spline; 21. Connecting sleeve; 22. Support column; 23. Buckle plate; 24. Threaded column; 25. Nut; 31. Air inlet hole; 32. Air delivery hole; 33. Communication hole; 34. Air supply hole; 35. Exhaust hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below in conjunction with embodiments. However, the scope of protection claimed by the present utility model is not limited to the specific embodiments described below.

[0035] Reference Figure 1 and Figure 2 , an improved rotor shaft includes a shaft body 11, a connecting sleeve 21, a support column 22 and a buckle plate 23. The connecting sleeve 21 and the buckle plate 23 are installed on the shaft body 11. The shaft body 11 is provided with a core installation step 12, and the core installation step 12 is located between the connecting sleeve 21 and the buckle plate 23. The connecting sleeve 21 and the buckle plate 23 are respectively located at both ends of the core installation step 12. The support column 22 is fixedly connected to the connecting sleeve 21. The support column 22 passes through the buckle plate 23. A threaded column 24 is fixedly connected to the end of the support column 22 away from the connecting sleeve 21. The threaded column 24 is threadedly connected with a nut 25, and the nut 25 is clamped to the side of the buckle plate 23 away from the connecting sleeve 21. Rotation positions 14 and an output end 15 are respectively provided at both ends of the shaft body 11. A resolver is installed on the rotation position 14, which is convenient for measuring the rotation angle of the shaft body 11 through the resolver. An oil seal position and a first bearing position 16 are provided between the output end 15 and the core installation step 12, and a spring groove 17 is provided in the first bearing position 16. A bearing can be installed on the first bearing position 16, and a snap ring for clamping the bearing can be installed on the spring groove 17, which plays a role in facilitating the installation of the bearing and the snap ring. A second bearing position 18 is provided between the rotation position 14 and the core installation step 12. A bearing can be installed on the second bearing position 18, which plays a role in facilitating the installation of the bearing. The output end 15 is provided with a spline 19. A gear is installed on the spline 19, so that when the shaft body 11 rotates, the gear can be driven to rotate, realizing the output of power, which plays a role in facilitating the installation of the gear.

[0036] The iron core mounting step 12 is provided with a flat position 13. The flat position 13 is a plane. Through the flat position 13, the iron core is clamped to realize the function of synchronous rotation of the iron core and the shaft body 11, so that when the iron core rotates, it can drive the shaft body 11 to rotate, and then the power can be output through the shaft body 11. The shaft body 11 is inserted through the connecting sleeve 21. The connecting sleeve 21 is sleeved on the outer peripheral surface of the iron core mounting step 12, and the connecting sleeve 21 is circumferentially clamped with the flat position 13. The connecting sleeve 21 is axially clamped with the flat position 13, so that the iron core can apply a circumferential torsion force to the shaft body 11 through the support column 22 and the connecting sleeve 21, so that the iron core can apply a torsion force at different positions of the shaft body 11, improving the structural stability between the iron core and the shaft body 11. The shaft body 11 is inserted through the buckle plate 23. The buckle plate 23 is fixedly connected to the shaft body 11. The buckle plate 23 is sleeved on the outer peripheral surface of the iron core mounting step 12, and the buckle plate 23 is axially clamped with the flat position 13. The buckle plate 23 is axially clamped with the flat position 13, so that the iron core can apply a circumferential torsion force to the shaft body 11 through the support column 22 and the buckle plate 23, so that the iron core can apply a torsion force at different positions of the shaft body 11, improving the structural stability between the iron core and the shaft body 11. A plurality of flat positions 13 are provided in total, and the plurality of flat positions 13 are evenly distributed in a circumferential circle centered on the shaft body 11. The plurality of flat positions 13 are evenly distributed in a circumferential circle, so that the center of gravity of the shaft body 11 is located on the axis, improving the dynamic balance of the shaft body 11 and enabling the shaft body 11 to be more stable during the rotation process.

[0037] The shaft body 11 is provided with an air inlet hole 31. The shaft body 11 is provided with an air delivery hole 32 communicated with the air inlet hole 31. The connecting sleeve 21 is provided with a communication hole 33 communicated with the air delivery hole 32. The support column 22 is provided with an air supply hole 34 communicated with the communication hole 33. The buckle plate 23 is provided with an exhaust hole 35 communicated with the air supply hole 34. The exhaust hole 35 extends in a direction away from the support column 22, and one end of the exhaust hole 35 away from the support column 22 communicates with the outer peripheral surface of the buckle plate 23.

[0038] This embodiment has the following advantages:

[0039] Install the iron core of the rotor on the iron core mounting step 12, pass the support column 22 through the iron core, provide support forces at both ends of the support column 22 through the connecting sleeve 21 and the buckle plate 23, and then provide support force to the iron core through the support column 22, so as to effectively improve the structural stability between the shaft body 11 and the iron core, achieving the advantage of better structural stability.

[0040] Tighten the nut 25, apply a pulling force towards the iron core mounting step 12 to the buckle plate 23 and the connecting sleeve 21 through the nut 25 and the threaded column 24, so that the buckle plate 23 and the connecting sleeve 21 clamp the iron core installed on the iron core mounting step 12, and then provide axial limit to the connecting sleeve 21 and the iron core through the buckle plate 23 fixed on the shaft body 11, realizing the function of fixing the iron core and effectively improving the stability of the iron core.

[0041] When the shaft body 11 drives the buckle plate 23 to rotate, the gas in the exhaust hole 35 flows away from the support column 22 through the centrifugal phenomenon. At the same time, since the buckle plate 23 will push the air in the exhaust hole 35 during the rotation process, the relative movement speed of the air at the end of the exhaust hole 35 away from the support column 22 is relatively large and the pressure is relatively small, which further promotes the air in the exhaust hole 35 to flow away from the support column 22 through the pressure difference. During the air flow in the exhaust hole 35, the air in the air inlet hole 31 will be sucked in through the air supply hole 34, the communication hole 33 and the air delivery hole 32, so that there is continuous air flow in the shaft body 11 and the support column 22 during the rotation of the shaft body 11. After absorbing heat through the flowing air and then discharging it, the temperature of the shaft body 11, the support column 22 and the iron core can be reduced, achieving the effect of controlling the temperature of the motor rotor shaft.

[0042] According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model pertains can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the utility model.

Claims

1. An improved rotor shaft, characterized in that: The invention comprises a shaft body (11), a connecting sleeve (21), a support column (22) and a buckle plate (23), wherein the connecting sleeve (21) and the buckle plate (23) are mounted on the shaft body (11), the shaft body (11) is provided with an iron core mounting step (12), the iron core mounting step (12) is located between the connecting sleeve (21) and the buckle plate (23), the connecting sleeve (21) and the buckle plate (23) are respectively located at two ends of the iron core mounting step (12), the support column (22) is fixedly connected to the connecting sleeve (21), the support column (22) is penetrated through the buckle plate (23), one end of the support column (22) away from the connecting sleeve (21) is fixedly connected with a threaded column (24), the threaded column (24) is threadedly connected with a nut (25), and the nut (25) is clamped with a side of the buckle plate (23) away from the connecting sleeve (21).

2. The improved rotor shaft according to claim 1, characterized in that: The core installation step (12) is provided with a flat position (13).

3. The improved rotor shaft according to claim 2, characterized in that: The shaft body (11) is inserted into a connecting sleeve (21), the connecting sleeve (21) is sleeved on the outer peripheral surface of the iron core installation step (12), and the connecting sleeve (21) is circumferentially clamped with the flat part (13).

4. The improved rotor shaft according to claim 2, characterized in that: The shaft body (11) is inserted into the buckle plate (23), the buckle plate (23) is fixedly connected to the shaft body (11), the buckle plate (23) is sleeved on the outer peripheral surface of the core installation step (12), and the buckle plate (23) is axially clamped with the flat part (13).

5. The improved rotor shaft according to any one of claims 2 to 4, characterized in that: A plurality of the flattened positions (13) are provided, and the plurality of the flattened positions (13) are evenly distributed around the circumference of the shaft body (11) as the center.

6. The improved rotor shaft according to claim 1, characterized in that: The shaft body (11) is provided with an air inlet hole (31), the shaft body (11) is provided with an air delivery hole (32) connected to the air inlet hole (31), the connecting sleeve (21) is provided with a connecting hole (33) connected to the air delivery hole (32), the support column (22) is provided with an air supply hole (34) connected to the connecting hole (33), the buckle plate (23) is provided with an exhaust hole (35) connected to the air supply hole (34), the exhaust hole (35) extends in a direction away from the support column (22), and one end of the exhaust hole (35) away from the support column (22) is connected to the outer peripheral surface of the buckle plate (23).

7. The improved rotor shaft according to claim 1, characterized in that: The two ends of the shaft body (11) are respectively provided with a rotation position (14) and an output end (15).

8. The improved rotor shaft according to claim 7, characterized in that: An oil seal position and a first bearing position (16) are provided between the output end (15) and the iron core installation step (12); the first bearing position (16) is provided with a spring groove (17).

9. The improved rotor shaft according to claim 7, characterized in that: A second bearing position (18) is provided between the rotation position (14) and the iron core installation step (12).

10. The improved rotor shaft according to claim 7, characterized in that: The output end (15) is provided with a spline (19).

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