CN210074984U - Generator rotor shaft - Google Patents
Generator rotor shaft Download PDFInfo
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- CN210074984U CN210074984U CN201921265729.6U CN201921265729U CN210074984U CN 210074984 U CN210074984 U CN 210074984U CN 201921265729 U CN201921265729 U CN 201921265729U CN 210074984 U CN210074984 U CN 210074984U
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- rotor shaft
- shaft body
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- rotor
- axle center
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Abstract
The utility model discloses a generator rotor shaft, including the rotor shaft body, the rotor shaft body includes the rotor erection section at middle part on the axial direction, be equipped with the axle center hole that runs through its self axis direction setting on the rotor shaft body, be equipped with the internal thread on the internal perisporium of axle center hole one end, deviate from the whole bell mouth that is the little taper hole of the big inner diameter of outer end diameter and form the transmission input end of internal threaded one end on the axle center hole, set up one section internal screw thread constitution fan erection section on the rotor shaft body, set up the keyway along rotor shaft body axial on the fan erection section, the keyway has the fillet along rotor shaft body axial inner root. The root of the key groove is prevented from being broken due to stress concentration in the long-time use process through the rounding.
Description
Technical Field
The utility model belongs to the technical field of the rotor shaft, very much relate to a generator rotor shaft.
Background
The shaft is a cylindrical object which is penetrated in the middle of the bearing or the middle of the wheel or the middle of the gear, but a small part of the shaft is square. A shaft is a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. Typically in the form of a metal rod, each section may have a different diameter. The parts of the machine that rotate are mounted on the shaft. The generator rotor shaft is coaxially arranged in the generator and penetrates through the generator rotor to be used for transmitting torque to the generator rotor and driving the generator rotor to rotate.
The existing generator rotor shaft has the following problems in the use process; when a small motor rotor shaft moves and works, a fan is arranged at one end close to a collecting ring and used for radiating heat of a rotor and the whole shaft when the small motor rotor shaft is in heat radiation requirements, and fan blades are mostly arranged at the end part through key slots. Such shafts are typically less than 20mm in diameter and after prolonged use the root damage at the keyway, particularly at the inner end of the keyway root, has been found to be significant. Seriously affecting the service life of the shaft.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a design structural strength better, the higher generator rotor shaft of life-span further solves the problem that rotor and rotor shaft are connected and are skidded each other.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a generator rotor shaft, includes the rotor shaft body, the rotor shaft body includes the rotor installation section at middle part on the axial direction, is equipped with the axle center hole that runs through its self axis direction setting on the rotor shaft body, is equipped with the internal thread on the internal perisporium of axle center hole one end, deviates from on the axle center hole internal thread one end is whole to be the big little bell mouth of inner end diameter of outer end diameter and to form the transmission input, sets up one section internal screw thread constitution fan installation section on the rotor shaft body, sets up the keyway along rotor shaft body axial on the fan installation section, and the keyway has the fillet along rotor shaft body axial inner root.
Thus, the maximum diameter of the generator rotor shaft with the layout structure is generally not more than 30 mm. Through set up the axle center hole on rotor shaft body, the axle center hole has the heat dissipation effect of losing weight. The axle center hole further fixes the rotor shaft by arranging a pull rod. The setting connection of keyway is used for connecting fan flabellum, and the diameter of fan installation section is generally at 20mm, makes the stress concentration department of keyway root to be processed away through the fillet like this, avoids the keyway root to be destroyed because stress concentration in long-time use like this.
Preferably, straight grains are axially arranged on the outer peripheral surface of the rotor mounting section along the rotor shaft body, and the straight grains are uniformly arranged at intervals along the circumferential direction of the rotor mounting section.
In this way, the surface contact is changed into line contact to enhance friction and avoid slipping when the rotor is connected through the straight threads. The straight stripes are implemented according to the standard of GB/T6403.3-2008.
Preferably, ring grooves are formed in the outer peripheral surface of the rotor mounting section at intervals.
Thus, the arrangement of the ring groove enables the line contact to be close to the turning point contact, and therefore the capacity of fastening the rotor can be improved. The anti-skidding effect is better.
Preferably, the round angle is R10-R15.
Thus, the fillet of the size has better practical use effect.
As optimization, the rotor shaft body further comprises a transition conical section connected with the left end of the rotor mounting section and a vacant section connected with the right end of the rotor mounting section; and the transition conical section is a frustum section with a small diameter at the outer end and a large diameter at the inner end.
Thus, the above further discloses the structure of the shaft.
Preferably, the rotor shaft body further comprises a press-fitting current collecting ring segment connected with the left end of the transition conical segment, and a bearing mounting segment located between the press-fitting current collecting ring segment and the fan mounting segment.
Thus, the above arrangement results in compactness.
Preferably, the outer peripheral surface of the press-fitting collecting ring segment is provided with straight mounting threads along the axial direction of the press-fitting collecting ring segment, and the straight mounting threads are uniformly arranged along the outer peripheral surface of the press-fitting collecting ring segment at intervals.
Thus, the straight grains are prevented from slipping, and press fitting is facilitated.
Preferably, one end of the shaft center hole, which is far away from the tapered hole, is provided with a chamfer angle.
Therefore, the design is more reasonable, and the screw rod is convenient to align when being connected with a corresponding screw rod.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: as shown in fig. 1 and 2, a generator rotor shaft, including rotor shaft body 1, rotor shaft body 1 includes rotor installation section 5 at middle part on the axial direction, is equipped with axle center hole 2 that runs through its self axis direction setting on rotor shaft body 1, is equipped with internal thread 3 on the internal perisporium of axle center hole 2 one end, deviates from on axle center hole 2 the one end of internal thread 3 is whole to be the big little bell mouth 4 of inner end diameter of outer end diameter and to form the transmission input end, sets up one section constitution fan installation section of internal thread 3 on rotor shaft body 1, sets up keyway 10 along rotor shaft body axial on the fan installation section, and keyway 10 has the fillet along rotor shaft body 1 axial inner root.
Thus, the maximum diameter of the generator rotor shaft with the layout structure is generally not more than 30 mm. Through set up the axle center hole on rotor shaft body, the axle center hole has the heat dissipation effect of losing weight. The axle center hole further fixes the rotor shaft by arranging a pull rod. The setting connection of keyway is used for connecting fan flabellum, and the diameter of fan installation section is generally at 20mm, makes the stress concentration department of keyway root to be processed away through the fillet like this, avoids the keyway root to be destroyed because stress concentration in long-time use like this.
In the present embodiment, the outer circumferential surface of the rotor mounting section 5 is provided with straight lines 6 along the axial direction of the rotor shaft body 1, and the straight lines are uniformly spaced along the circumferential direction of the rotor mounting section.
In this way, the surface contact is changed into line contact to enhance friction and avoid slipping when the rotor is connected through the straight threads.
In this embodiment, the rotor mounting section 5 is further provided with ring grooves on the outer peripheral surface thereof at intervals.
Thus, the provision of the ring groove allows the line contact to be brought closer to the turning point contact, which improves the ability to fasten the rotor. The anti-skidding effect is better.
In the embodiment, the round angle is R10-R15. .
Thus, the fillet of the size has better practical use effect.
In this embodiment, the rotor shaft body 1 further includes a transition taper section 7 connected to the left end of the rotor mounting section, and a vacant section 8 connected to the right end of the rotor mounting section 5; and the transition conical section 7 is a frustum section with a small outer end diameter and a large inner end diameter.
Thus, the above further discloses the structure of the shaft.
In this embodiment, the rotor shaft body 1 further includes a press-fitting current collecting ring segment 9 connected to the left end of the transition conical segment 7, and a bearing mounting segment located between the press-fitting current collecting ring segment 9 and the fan mounting segment.
Thus, the above arrangement results in compactness.
In this embodiment, the outer peripheral surface of the press-fitting collecting ring segment 9 has straight installation threads arranged along the axial direction of the rotor shaft body 1, and the straight installation threads are uniformly spaced along the outer peripheral surface of the press-fitting collecting ring segment. The straight veins are implemented according to the standard of GB/T6403.3-2008, and the specific size is determined according to the use requirement.
Thus, the straight grains are prevented from slipping, and press fitting is facilitated.
In this embodiment, the end of the axle hole 2 facing away from the tapered hole is provided with a chamfer.
Therefore, the design is more reasonable, and the screw rod is convenient to align when being connected with a corresponding screw rod.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (8)
1. The utility model provides a generator rotor shaft, includes rotor shaft body (1) rotor shaft body includes rotor installation section (5) at middle part on the axial direction, is equipped with axle center hole (2) that runs through its self axis direction setting on the rotor shaft body, is equipped with internal thread (3) on the internal perisporium of axle center hole one end, deviates from on the axle center hole internal thread one end wholly is the little bell mouth (4) of the big inner diameter of outer end diameter and forms the transmission input end, sets up one section constitution fan installation section of internal thread (3) on rotor shaft body (1), sets up keyway (10) along rotor shaft body axial on the fan installation section, and keyway (10) have the fillet along rotor shaft body (1) axial inner root.
2. Generator rotor shaft according to claim 1, wherein the outer circumferential surface of the rotor mounting section is provided with straight threads (6) in the axial direction of the rotor shaft body, the straight threads being evenly spaced in the circumferential direction of the rotor mounting section.
3. The generator rotor shaft of claim 2, wherein the rotor mounting section further comprises spaced ring grooves on the outer circumferential surface thereof.
4. The generator rotor shaft of claim 1, wherein the fillet is R10-R15.
5. A generator rotor shaft according to claim 1, characterised in that the rotor shaft body further comprises a transition cone section (7) connected to the left end of the rotor mounting section, and a free section (8) connected to the right end of the rotor mounting section; and the transition conical section (7) is a frustum section with a small outer end diameter and a large inner end diameter.
6. A generator rotor shaft according to claim 2, characterised in that the rotor shaft body further comprises a press-fit slip segment (9) connected to the left end of the transition cone segment, and a bearing mounting segment between the press-fit slip segment and the fan mounting segment.
7. The generator rotor shaft according to claim 3, wherein the press-fit collector ring segments have straight mounting grooves on the outer circumferential surface thereof along the axial direction of the rotor shaft body, and the straight mounting grooves are uniformly spaced along the outer circumferential surface of the press-fit collector ring segments.
8. A generator rotor shaft according to claim 1, characterised in that the end of the shaft centre hole (2) facing away from the conical hole is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265729.6U CN210074984U (en) | 2019-08-07 | 2019-08-07 | Generator rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265729.6U CN210074984U (en) | 2019-08-07 | 2019-08-07 | Generator rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210074984U true CN210074984U (en) | 2020-02-14 |
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ID=69430841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921265729.6U Active CN210074984U (en) | 2019-08-07 | 2019-08-07 | Generator rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210074984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713680A (en) * | 2020-12-23 | 2021-04-27 | 珠海格力电器股份有限公司 | Rotor structure and motor |
-
2019
- 2019-08-07 CN CN201921265729.6U patent/CN210074984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713680A (en) * | 2020-12-23 | 2021-04-27 | 珠海格力电器股份有限公司 | Rotor structure and motor |
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