CN112283321B - Sleeve shaft flexible rod rigid gear rotor - Google Patents
Sleeve shaft flexible rod rigid gear rotor Download PDFInfo
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- CN112283321B CN112283321B CN202011142905.4A CN202011142905A CN112283321B CN 112283321 B CN112283321 B CN 112283321B CN 202011142905 A CN202011142905 A CN 202011142905A CN 112283321 B CN112283321 B CN 112283321B
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- flexible rod
- sleeve shaft
- rolling bearing
- quill
- rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2229/00—Setting preload
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Gear Transmission (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a sleeve shaft flexible rod rigid gear rotor, and relates to the technical field of rotor dynamics; the double-bevel gear transmission device comprises a sleeve shaft, a flexible rod, a rolling bearing and a preloading block, wherein a double bevel gear is arranged on the sleeve shaft, a central hole is formed in the sleeve shaft, the flexible rod penetrates through the central hole of the sleeve shaft, one end of the flexible rod is in interference fit with the sleeve shaft, so that the flexible rod and the sleeve shaft are connected into a whole to transmit torque generated by gear transmission, and the other end of the flexible rod extends out of the sleeve shaft to be connected with a driven device; the rolling bearing is assembled between the driving end of the flexible rod and the sleeve shaft, and a wedge-shaped space for installing the preloading block is arranged between the outer ring of the rolling bearing and the inner side of the sleeve shaft.
Description
Technical Field
The invention relates to the technical field of rotor dynamics, in particular to a sleeve shaft flexible rod rigid gear rotor.
Background
The existing high-power electric equipment generator is generally directly driven by a steam turbine, and in order to improve the efficiency of a low-flow steam turbine generator unit, the steam turbine starts to drive the generator at a high rotating speed and through a gear box in a speed reduction manner within 60MW grade in recent years. Based on the consideration of the gear strength and the transmission efficiency of the reduction gearbox, in order to absorb the electromagnetic excitation of faults of two-phase short circuit, asynchronous error parallel connection and the like of the generator, a low-speed rotor of the gear box with the power of more than 30MW grade generally adopts a flexible structure.
The inventor of the application finds in practice that the flexible structure gear rotor usually lacks support, so that the flexible shaft is poor in support condition, and the problems of shafting resonance, shafting instability and abnormal vibration are easily caused.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a sleeve shaft flexible rod rigid gear rotor, which uses a preload block to adjust a preload of a rolling bearing to increase a support stiffness so as to make the sleeve shaft flexible rod gear rotor become a rigid rotor, changes a rotor support structure to improve the rigidity of the gear rotor in a shaft system, and can effectively solve the problems of shaft system resonance, shaft system instability and abnormal vibration of the existing flexible structure gear rotor.
The technical scheme adopted by the invention is as follows:
a quill flexible rod rigid gerotor comprising
The sleeve shaft is provided with a double bevel gear, and a central hole is formed in the sleeve shaft along the direction of the central axis of the sleeve shaft;
the flexible rod penetrates through the central hole and is coaxially arranged with the sleeve shaft, one end of the flexible rod is in interference fit with the sleeve shaft, the flexible rod and the sleeve shaft are connected into a whole to transmit torque generated by gear transmission, and the other end of the flexible rod extends out of the sleeve shaft to be connected with driven equipment;
the rolling bearing is assembled between the driving end of the flexible rod and the sleeve shaft, so that the driving end of the flexible rod is in supporting connection with the sleeve shaft through the rolling bearing; and a wedge-shaped space is arranged between the outer ring of the rolling bearing and the inner side of the sleeve shaft;
the preload block is installed in the wedge-shaped space and used for adjusting the preload of the rolling bearing.
In the technical scheme, the driving end of the flexible rod refers to one end of the flexible rod connected with the driven device, and the non-driving end of the flexible rod refers to one end of the flexible rod far away from the driven device.
Aiming at the problems that the conventional flexible structure gear rotor is easy to generate shaft system resonance, shaft system instability and abnormal vibration, the rolling bearing is assembled between the driving end of the flexible rod and the sleeve shaft, so that the driving end of the flexible rod is in supporting connection with the sleeve shaft through the rolling bearing, and compared with the conventional flexible structure gear rotor, the flexible rod supporting structure and the supporting rigidity can be effectively increased; a preload block is assembled in a wedge-shaped space between the outer ring of the rolling bearing and the inner side of the sleeve shaft, and the preload of the rolling bearing is adjusted through the preload block to increase the supporting rigidity, so that the sleeve shaft flexible rod gear rotor becomes a rigid rotor; the design of antifriction bearing combination preloading piece has provided the support structure of quill to the flexible rod at the drive end of flexible rod, has guaranteed the supporting rigidity between flexible rod and the quill, and then has guaranteed the smooth operation of gear rotor in the shafting, and the preloading piece maintains quill and flexible rod centering all the time at the operation in-process simultaneously, can further guarantee that quill flexible rod rigidity gear rotor operates steadily, avoids appearing shafting unstability and abnormal vibration problem.
Preferably, as the technical scheme, an annular gap a is formed between the sleeve shaft and the flexible rod arranged in the central hole of the sleeve shaft, the annular gap a is 10mm-20mm, and the size of the annular gap is determined according to the assembly manufacturability of the flexible rod and the sleeve shaft and the strength of the flexible rod and the sleeve shaft.
Preferably, the non-driving end of the flexible rod is in interference fit with the sleeve shaft and transmits torque generated by gear transmission through a torque transmission pin or a spline; with the above structure, the torque transmission path is: torque is transmitted from the gear on the quill to a torque pin or spline along the non-drive end shaft section of the quill and then to the driven device via a flexible rod inside it; meanwhile, the rolling bearing assembled between the driving end of the flexible rod and the sleeve shaft can be an angular contact ball type rolling bearing, and the rolling bearing is adopted because the inner ring and the outer ring of the rolling bearing can rotate freely to isolate torque transmission, so that when a driven device fails (for example, when two phases of a generator are short-circuited), a torque transmission path is as follows: the instantaneous torque is transmitted to the torque transmission pin or spline via the flexible rod and then transmitted to the gear via the non-drive end shaft segment of the sleeve shaft; the rolling bearing isolates torque from being transmitted to the sleeve shaft from the flexible rod driving end, so that a torque transmission path is prolonged, the torsional deformation of a shaft section on the transmission path can be utilized to the maximum extent to absorb the instantaneous torque when the driven equipment fails, and the safety of gears in a shaft system is protected.
Preferably, the sleeve shaft further comprises a bearing positioning structure, wherein the bearing positioning structure comprises a convex shoulder arranged on the flexible rod and a limiting groove formed along the radial direction of the inner side of the sleeve shaft driving end, so that the rolling bearing is assembled in the limiting groove and can be axially positioned through the convex shoulder; by adopting the structure, the rolling bearing and the preloading block are utilized to realize the axial positioning reliability of the rolling bearing in the center hole of the sleeve shaft and facilitate the assembly and disassembly while the driving end of the flexible rod is connected with the sleeve shaft in a supporting way.
Furthermore, the bearing positioning structure also comprises a positioning ring arranged on the flexible rod, and the positioning ring is arranged on the other side, opposite to the shoulder, of the rolling bearing and is used for axially positioning the rolling bearing; by adopting the structure, the rolling bearing is reliably installed and positioned on the flexible rod by utilizing the convex shoulder and the positioning ring on the flexible rod, then the flexible rod is assembled into the central hole of the sleeve shaft from the driving end to the non-driving end, the limiting groove at the driving end of the sleeve shaft plays a role in positioning the flexible rod and the rolling bearing, and finally the torsion transmission pin or the spline at the non-driving end is assembled, so that the flexible rod and the sleeve shaft are integrated.
Preferably, the section of the preload block is in a wedge shape, and the wedge-shaped space is of a full-circle opening structure and is used for embedding the preload block into the wedge-shaped space so as to adjust the centering of the sleeve shaft and the flexible rod and the preload of the rolling bearing; the design of the rolling bearing combined preloading block provides a support structure of the sleeve shaft to the flexible rod at the drive end, so that the support rigidity between the flexible rod and the sleeve shaft is ensured, and the smooth operation of the gear rotor in the shaft system is further ensured.
Preferably, as for the above technical solution, the end of the flexible rod extending out of the driving end of the quill is provided with a back wheel, so that the rotor is connected with the driven device through the back wheel; by adopting the structure, the flexible rod extending along the central hole of the sleeve shaft deforms to absorb the instantaneous torque of the driven device under the abnormal working condition, so that the safety of the gear in the shafting is protected.
Preferably, the ratio of the length of the flexible rod to the diameter of the flexible rod is greater than 10, and the flexible rod adopts a slender shaft design, so that the instantaneous torque of the driven device under abnormal conditions can be better absorbed, and the safe operation of a gear rotor in a shaft system is ensured.
As described above, the present invention has at least the following advantages over the prior art:
1. the sleeve shaft flexible rod rigid gear rotor adopts the rolling bearing assembled between the driving end of the flexible rod and the sleeve shaft, so that the driving end of the flexible rod is in supporting connection with the sleeve shaft through the rolling bearing, and a supporting structure of the flexible rod in a shaft system is increased; and the preload blocks are assembled in the wedge-shaped spaces on the outer ring of the rolling bearing and the inner side of the sleeve shaft, and the preload of the rolling bearing is adjusted through the preload blocks to increase the supporting rigidity of the flexible rod, so that the sleeve shaft flexible rod gear rotor becomes a rigid rotor, the sleeve shaft flexible rod rigid gear rotor is ensured to run stably, and the problems of shafting instability and abnormal vibration are avoided.
2. The rolling bearing assembled between the sleeve shaft and the flexible rod does not restrict the torsional deformation of the flexible rod, and the rolling bearing isolates the torque from being transmitted from the driving end of the flexible rod to the sleeve shaft, so that a torque transmission path is prolonged, the torsional deformation of a shaft section on the transmission path can be utilized to the maximum extent to absorb the instantaneous torque when the driven equipment fails, and the safety of gears in a shaft system is protected.
3. The rigid gear rotor with the sleeve shaft and the flexible rod is provided with the bearing positioning structure, the rolling bearing is assembled in the limiting groove, the convex shoulder and the positioning ring on the flexible rod are used for axially positioning the rolling bearing, the rolling bearing is convenient to mount and is detachable and reliable in positioning, meanwhile, the design of the wedge-shaped space combined preloading block is convenient to adjust the centering of the sleeve shaft and the flexible rod, and meanwhile, the preloading of the rolling bearing is convenient to adjust through the preloading block, so that the supporting rigidity between the flexible rod and the sleeve shaft is adjusted, and the gear rotor in a shaft system is further ensured to run stably.
4. The flexible rod extends out of the end part of the driving end of the sleeve shaft and is provided with the backrest wheel which is used for being connected with driven equipment, and the instant torque of the driven equipment under abnormal working conditions can be absorbed through the deformation of the flexible rod extending along the central hole of the sleeve shaft, so that the safety of gears in a shaft system is protected; and the ratio of the length of the flexible rod to the diameter of the flexible rod is more than 10, so that the instantaneous torque of the driven device under the abnormal working condition can be better absorbed, and the safe operation of a gear rotor in a shaft system is ensured.
In conclusion, the quill shaft flexible rod rigid gear rotor can absorb the instantaneous torque of the driven device under the abnormal working condition through the deformation of the slender flexible rod so as to protect the safety of the gear, and can adjust the preload of the rolling bearing through the preloading block to increase the supporting rigidity so that the quill shaft flexible rod gear rotor becomes a rigid rotor, so that the problems of shafting resonance, shafting instability and abnormal vibration of the conventional flexible structure gear rotor can be fundamentally solved.
Drawings
The invention will be described by way of specific embodiments and with reference to the accompanying drawings, in which
FIG. 1 is a schematic structural view of a quill flexible rod rigid gerotor in an exemplary embodiment of the present invention.
Description of reference numerals: 1-a quill; 2-a gear; 3-a flexible rod; 4-torsion transmission pin; 5-a backrest wheel; 6-rolling bearings; 7-a positioning ring; 8-a preload block; g-a driving end; t-non-drive end.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example one
This embodiment is substantially as shown in fig. 1: the embodiment provides a quill flexible rod rigid gear rotor, which comprises a quill 1 and a flexible rod 3, wherein a double bevel gear 2 is processed on the quill 1, and the quill 1 is provided with a central hole along the central axis direction; the flexible rod 3 passes through the central hole and is coaxially arranged with the sleeve shaft 1, meanwhile, an annular gap A is formed between the sleeve shaft 1 and the flexible rod 3 arranged in the central hole of the sleeve shaft, the annular gap A is 10mm-20mm, and the size of the annular gap is determined according to the assembly manufacturability of the flexible rod and the sleeve shaft and the strength of the flexible rod and the sleeve shaft; the left end of the flexible rod 3 and the sleeve shaft 1 are connected into a whole through interference fit, so that the torque of the sleeve shaft can be transmitted to the flexible rod 3, and the right end of the flexible rod 3 extends out of the sleeve shaft 1 to be connected with a driven device.
The driving end of the flexible rod in this embodiment refers to the right end (i.e. the end of the flexible rod G in the figure) connected with the driven device, and the non-driving end of the flexible rod refers to the left end (i.e. the end of the flexible rod T in the figure) far away from the driven device.
Crucially, the gear rotor provided by the embodiment further comprises a rolling bearing 6 and a pre-load block 8, wherein the rolling bearing 6 is assembled between the driving end of the flexible rod 3 and the quill 1, so that the driving end of the flexible rod 3 is in supporting connection with the quill 1 through the rolling bearing 6, and compared with the existing flexible structure gear rotor, the flexible rod supporting structure and the supporting rigidity can be effectively increased; a wedge-shaped space is formed between the outer ring of the rolling bearing 6 and the inner side of the sleeve shaft 1, a preload block 8 is installed in the wedge-shaped space and used for adjusting the centering of the sleeve shaft and the flexible rod and the preload of the rolling bearing 6, the preload of the rolling bearing is adjusted through the preload block to increase the structural supporting rigidity of the rotor, and the gear rotor of the flexible rod of the sleeve shaft becomes a rigid rotor; the design of the rolling bearing combined preloading block provides a support structure of the sleeve shaft to the flexible rod at the drive end of the flexible rod, the support rigidity between the flexible rod and the sleeve shaft is guaranteed, the smooth operation of a gear rotor in a shaft system is further guaranteed, meanwhile, the preloading block maintains the sleeve shaft and the flexible rod to be always centered in the operation process, and the problems of shaft system instability and abnormal vibration can be effectively avoided.
From the above, in the embodiment, for solving the problems of shaft system resonance, shaft system instability and abnormal vibration easily occurring in the existing flexible structure gear rotor, the rolling bearing 6 is assembled between the driving end of the flexible rod 3 and the sleeve shaft 1, so that the driving end of the flexible rod 3 is in supporting connection with the sleeve shaft 1 through the rolling bearing 6, and the supporting structure and the supporting rigidity of the flexible rod in the shaft system are increased; a preload block 8 is assembled in a wedge-shaped space between the outer ring of the rolling bearing 6 and the inner side of the sleeve shaft 1, and the preload of the rolling bearing 6 is adjusted through the preload block 8 to increase the supporting rigidity, so that the sleeve shaft flexible rod gear rotor becomes a rigid rotor; meanwhile, the preload block 8 maintains the alignment of the sleeve shaft 1 and the flexible rod 3 in the operation process so as to ensure that the rigid gear rotor of the sleeve shaft and the flexible rod runs stably and avoid the problems of shafting instability and abnormal vibration.
Specifically, the non-driving end of the left end of the flexible rod 3 is in interference fit with the quill shaft 1 and transmits torque generated by transmission of the gear 2 through the torsion transmission pin 4, so that the torque of the quill shaft 1 can be transmitted to the flexible rod 3 through the torsion transmission pin 4, and the torque generated by transmission of the gear 2 can also be transmitted through a spline, and the material of the transmission connecting piece is convenient to obtain and can achieve good assembly stability; meanwhile, the rolling bearing 6 assembled between the driving end of the flexible rod 3 and the sleeve shaft 1 can be an angular contact ball type rolling bearing 6, and the rolling bearing is used for isolating torque transmission and has better load bearing capacity.
In order to ensure that the rolling bearing 6 is reliably positioned in the axial direction, the rolling bearing 6 provided by the embodiment is also provided with a bearing positioning structure, and the bearing positioning structure comprises a convex shoulder arranged on the flexible rod 3 and a limiting groove radially formed along the inner side of the sleeve shaft 1, so that the rolling bearing 6 is assembled in the limiting groove and can be positioned in the axial direction through the convex shoulder; by adopting the structure, the rolling bearing 6 and the preloading block 8 are utilized to realize the supporting connection between the driving end of the flexible rod 3 and the sleeve shaft 1, and the rolling bearing 6 is reliable in axial positioning in the central hole of the sleeve shaft 1 and convenient to assemble and disassemble; preferably, the bearing positioning structure further comprises a positioning ring 7 arranged on the flexible rod 3, the positioning ring 7 is arranged on the other side of the rolling bearing 6 opposite to the convex shoulder, the rolling bearing is firstly reliably arranged and positioned on the flexible rod by the convex shoulder and the positioning ring on the flexible rod, then the flexible rod is assembled into the central hole of the sleeve shaft from the driving end to the non-driving end, the limiting groove at the driving end of the sleeve shaft plays a role in positioning the assembly of the flexible rod and the rolling bearing, and finally the torsion transmission pin or the spline at the non-driving end is assembled, so that the flexible rod and the sleeve shaft are connected into a whole.
In addition, the section of the preloading block 8 is in a wedge shape, the wedge-shaped space is a wedge-shaped ring groove structure arranged between the outer ring of the rolling bearing 6 and the inner side of the sleeve shaft 1, and one side of the wedge-shaped space, which is close to the driving end, is a whole-ring opening structure and is used for embedding the preloading block into the wedge-shaped ring groove structure at the upper, lower, left and right positions so as to adjust the centering of the sleeve shaft and the flexible rod and the preloading of the rolling bearing; the design of the rolling bearing combined preloading block provides a support structure of the sleeve shaft to the flexible rod at the drive end, so that the support rigidity between the flexible rod and the sleeve shaft is ensured, and the smooth operation of the gear rotor in the shaft system is further ensured. In summary, compared with the conventional flexible rotor structure, the key of the quill flexible rod rigid gear rotor of the present embodiment is that the rolling bearing 6 is assembled between the driving end of the flexible rod 3 and the quill 1, so that the driving end of the flexible rod 3 is in supporting connection with the quill 1 through the rolling bearing 6, and the supporting structure and the supporting rigidity of the flexible rod in the shaft system are increased; meanwhile, the preload of the rolling bearing 6 is adjusted through the preload block 8 to increase the supporting rigidity, so that the sleeve shaft flexible rod gear rotor becomes a rigid rotor, the smooth operation of the sleeve shaft flexible rod rigid gear rotor is ensured, and the problems of shaft system resonance, shaft system instability and abnormal vibration of the conventional flexible structure gear rotor can be fundamentally solved.
Example two
The second embodiment is substantially the same as the first embodiment, except that: the embodiment provides a quill flexible rod rigid gear rotor, as a preferable scheme of the first embodiment, the flexible rod 3 of the first embodiment extends out of the right end driving end of the quill 1 to be provided with a back wheel 5, so that the rotor is connected with a driven device through the back wheel 5, and therefore by adopting the structure, the flexible rod 3 extending along the central hole of the quill 1 deforms to absorb the instant torque of the driven device in abnormal working conditions, and therefore the safety of a gear 2 in a shafting is protected.
Preferably, the ratio of the length of the flexible rod 3 to the diameter of the flexible rod 3 is greater than 10, and the design of the flexible rod with a slender structure can better absorb the instantaneous torque of the driven device under abnormal conditions, so that the safe operation of the gear rotor in the shafting is ensured.
In conclusion, the quill flexible rod rigid gear rotor of the embodiment can absorb the instantaneous torque of the driven device under the abnormal working condition through the deformation of the slender flexible rod, so that the safety of the gear 2 is protected, and the preload of the rolling bearing 6 is adjusted through the preload block 8 to increase the supporting rigidity, so that the quill flexible rod gear rotor becomes a rigid rotor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A quill flexible rod rigid gear rotor characterized by: comprises that
The sleeve shaft is provided with a double bevel gear, and a central hole is formed in the sleeve shaft along the direction of the central axis of the sleeve shaft;
the flexible rod penetrates through the central hole and is coaxially arranged with the sleeve shaft, one end of the flexible rod is in interference fit with the sleeve shaft, the flexible rod and the sleeve shaft are connected into a whole to transmit torque generated by gear transmission, and the other end of the flexible rod extends out of the sleeve shaft to be connected with driven equipment;
the rolling bearing is assembled between the driving end of the flexible rod and the sleeve shaft, so that the driving end of the flexible rod is in supporting connection with the sleeve shaft through the rolling bearing; and a wedge-shaped space is arranged between the outer ring of the rolling bearing and the inner side of the sleeve shaft; a preload block installed in the wedge-shaped space to adjust a preload of the rolling bearing;
the bearing positioning structure comprises a convex shoulder arranged on the flexible rod and a limiting groove radially formed along the inner side of the sleeve shaft, so that the rolling bearing is assembled in the limiting groove and can be axially positioned through the convex shoulder; the bearing positioning structure further comprises a positioning ring arranged on the flexible rod, and the positioning ring is arranged on the other side, opposite to the shoulder, of the rolling bearing and used for axially positioning the rolling bearing.
2. The quill flexible rod rigid gear rotor of claim 1, wherein: an annular gap A is formed between the sleeve shaft and the flexible rod arranged in the central hole of the sleeve shaft, and the annular gap A is 10-20 mm.
3. The quill flexible rod rigid gear rotor of claim 1, wherein: the non-driving end of the flexible rod is assembled with the sleeve shaft in an interference fit mode to form a whole, and torque generated by gear transmission is transmitted through the torsion transmission pin or the spline.
4. The quill flexible rod rigid gear rotor of claim 1, wherein: the section of preloading piece is the wedge form, the wedge space is whole circle opening structure for imbed preloading piece in the wedge space with the centering of adjustment quill and flexible rod and the preloading of antifriction bearing.
5. The quill flexible rod rigid gear rotor of any of claims 1 to 4, wherein: the end part of the flexible rod, which extends out of the driving end of the sleeve shaft, is provided with a back wheel, so that the rotor is connected with a driven device through the back wheel.
6. The quill flexible rod rigid gear rotor of claim 5, wherein: the ratio of the length of the flexible rod to the diameter of the flexible rod is greater than 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011142905.4A CN112283321B (en) | 2020-10-23 | 2020-10-23 | Sleeve shaft flexible rod rigid gear rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011142905.4A CN112283321B (en) | 2020-10-23 | 2020-10-23 | Sleeve shaft flexible rod rigid gear rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112283321A CN112283321A (en) | 2021-01-29 |
| CN112283321B true CN112283321B (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011142905.4A Active CN112283321B (en) | 2020-10-23 | 2020-10-23 | Sleeve shaft flexible rod rigid gear rotor |
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| Country | Link |
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| CN (1) | CN112283321B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697848A (en) * | 1995-05-12 | 1997-12-16 | Capstone Turbine Corporation | Compound shaft with flexible disk coupling |
| CN201133422Y (en) * | 2007-12-26 | 2008-10-15 | 广州珠江钢铁有限责任公司 | Bearing clearance automatic regulating apparatus |
| CN101783538A (en) * | 2009-01-21 | 2010-07-21 | 襄樊航力机电技术发展有限公司 | Flexible shaft driving generator |
| CN105471160A (en) * | 2014-07-31 | 2016-04-06 | 德昌电机(深圳)有限公司 | Rolling bearing fastening structure |
| DE102018213128A1 (en) * | 2018-08-06 | 2020-02-06 | Robert Bosch Gmbh | Housing arrangement of an electric motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009134684A1 (en) * | 2008-04-30 | 2009-11-05 | The Timken Company | Epicyclic gear system with flexpins |
| WO2020039668A1 (en) * | 2018-08-23 | 2020-02-27 | 日本精工株式会社 | Rolling bearing precompression method, bearing precompression device, bearing assembly, machine, and vehicle |
-
2020
- 2020-10-23 CN CN202011142905.4A patent/CN112283321B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697848A (en) * | 1995-05-12 | 1997-12-16 | Capstone Turbine Corporation | Compound shaft with flexible disk coupling |
| CN201133422Y (en) * | 2007-12-26 | 2008-10-15 | 广州珠江钢铁有限责任公司 | Bearing clearance automatic regulating apparatus |
| CN101783538A (en) * | 2009-01-21 | 2010-07-21 | 襄樊航力机电技术发展有限公司 | Flexible shaft driving generator |
| CN105471160A (en) * | 2014-07-31 | 2016-04-06 | 德昌电机(深圳)有限公司 | Rolling bearing fastening structure |
| DE102018213128A1 (en) * | 2018-08-06 | 2020-02-06 | Robert Bosch Gmbh | Housing arrangement of an electric motor |
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