CN115614397A - Spline silencing device - Google Patents
Spline silencing device Download PDFInfo
- Publication number
- CN115614397A CN115614397A CN202211182440.4A CN202211182440A CN115614397A CN 115614397 A CN115614397 A CN 115614397A CN 202211182440 A CN202211182440 A CN 202211182440A CN 115614397 A CN115614397 A CN 115614397A
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- China
- Prior art keywords
- spline
- groove
- shaft
- spline shaft
- external
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Classifications
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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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
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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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the field of spline design and assembly, in particular to a spline silencing device, which comprises a transmission shaft and a hub, wherein an external spline shaft is arranged on the transmission shaft, an internal spline is arranged on the hub, the external spline shaft is matched with the internal spline, and a mounting nut is arranged on the external spline shaft; the key tooth side of the external spline shaft is provided with a convex block, and the internal spline is provided with a groove matched with the convex block; the groove is also positioned on the key tooth side of the internal spline; an oil filling hole is formed in the hub, and hydraulic oil is filled into the internal spline through the oil filling hole; according to the invention, through the matching of the convex block and the groove, the technical problem that the matching clearance between the external spline shaft and the internal spline is too large, so that abnormal sound is generated at the matching part of the internal spline and the external spline shaft is solved.
Description
Technical Field
The invention relates to the field of spline design and assembly, in particular to a spline silencing device.
Background
The involute spline is widely applied to the automobile industry due to the advantages of strong bearing capacity, easy automatic centering, high production efficiency and the like, wherein a vehicle can realize starting and backing by meshing the hub bearing internal spline with the external spline shaft on the transmission shaft to transmit torque, but due to the influence of processing precision, a fit clearance exists between the external spline shaft and the internal spline, if the fit clearance is too large, the spline can generate microcosmic elastic deformation at the moment of advancing and backing of the vehicle, and under the influence of the spline clearance and deformation, the circumferential sliding (namely, stick-slip friction) occurs at the fit part of the hub and the transmission shaft, so that abnormal sound is generated, and the service life of the transmission shaft is further reduced.
In order to solve the problem that the fit clearance between the external spline shaft and the internal spline is too large, the prior art eliminates the fit clearance between the external spline shaft and the internal spline by the interference fit of the external spline shaft and the internal spline, however, the interference magnitude is large in the technical means, so that the press-fitting pressure between the external spline shaft and the internal spline is too large, and the internal spline is at a cracking risk.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a spline silencing device, which solves the technical problem that the fit clearance between an external spline shaft and an internal spline is too large, so that abnormal sound is generated at the fit part of a hub and a transmission shaft.
The spline silencing device comprises a transmission shaft and a hub, wherein an external spline shaft is arranged on the transmission shaft, an internal spline is arranged on the hub, the external spline shaft is matched with the internal spline, and a mounting nut is arranged on the external spline shaft;
the key tooth side of the external spline shaft is provided with a convex block, and the internal spline is provided with a groove matched with the convex block; the groove is also positioned on the key tooth side of the internal spline;
the hub is provided with an oil filler hole, and hydraulic oil is filled in the internal spline through the oil filler hole.
Preferably, the shape of the groove is gourd-shaped, and the inner diameter of one end of the groove close to the key tooth side of the external spline shaft is smaller than the inner diameter of one end of the groove far away from the key tooth side of the external spline shaft.
Preferably, the lug is provided with flower grooves which are uniformly distributed along the axial direction of the external spline shaft, and the flower grooves are sunken towards the center of the lug.
Preferably, the shape of the bump is conical.
Preferably, the outer surface of the bump is provided with an elastic layer.
Preferably, the resilient layer is beryllium copper.
The invention has the following beneficial effects:
1. according to the spline silencing device, the transmission shaft drives the external spline shaft to rotate, when the hub is driven to rotate by the external spline shaft, the convex block on the external spline shaft moves towards the inside of the groove and extrudes hydraulic oil in the groove, and in the moving process of the right-side convex block, the distance between the right-side convex block and the right-side groove is smaller and smaller, so that the speed of extruding the hydraulic oil in the right-side groove by the right-side convex block is gradually reduced, a damping effect is achieved, the condition that a too large fit clearance exists between the external spline shaft and the internal spline is reduced, and abnormal sound is further caused at the fit part of the hub and the transmission shaft is further caused.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a structural view of a bump;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a cross-sectional view of FIG. 2
FIG. 5 is a schematic structural diagram of another embodiment of a bump;
FIG. 6 is an enlarged view at B in FIG. 5;
fig. 7 is a cross-sectional view of fig. 5.
In the figure: 1. a drive shaft; 11. an external spline shaft; 12. installing a nut; 2. a hub; 21. an internal spline; 22. an oil filler hole; 3. a bump; 31. a groove; 4. flower grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in figures 1 to 4 of the drawings,
the spline silencing device comprises a transmission shaft 1 and a hub 2, wherein an external spline shaft 11 is arranged on the transmission shaft 1, an internal spline 21 is arranged on the hub 2, the external spline shaft 11 is matched with the internal spline 21, and a mounting nut 12 is arranged on the external spline shaft 11;
the key tooth side of the external spline shaft 11 is provided with a convex block 3, and the internal spline 21 is provided with a groove 31 matched with the convex block 3; the grooves 31 are also located on the spline teeth side of the internal spline 21;
an oil filling hole 22 is formed in the hub 2, and hydraulic oil is filled into the internal spline 21 through the oil filling hole 22.
Wherein:
A. the groove 31 is gourd-shaped, and the inner diameter of the end of the groove 31 close to the spline tooth side of the male spline shaft 11 is smaller than the inner diameter of the end of the groove 31 far away from the spline tooth side of the male spline shaft 11.
B. The lug 3 is provided with flower grooves 4 which are uniformly distributed along the axial direction of the external spline shaft 11, and the flower grooves 4 are sunken towards the center of the lug 3.
C. The outer surface of the bump 3 is provided with an elastic layer; the elastic layer is beryllium copper.
During installation, firstly, a coolant such as liquid nitrogen or liquid ammonia is used for cooling the external spline shaft 11, the outer diameters of the external spline shaft 11 and the convex blocks 3 are slightly reduced under the influence of thermal expansion and cold contraction, then the external spline shaft 11 is inserted into the internal spline 21 on the hub 2, the convex blocks 3 on the external spline shaft 11 can be smoothly inserted into the grooves 31, then the mounting nut 12 is installed on the right side of the hub 2, a closed space is formed in a gap between the external spline shaft 11 and the internal spline 21 under the matching of the mounting nut 12 and the transmission shaft 1, then hydraulic oil is injected into the gap between the external spline shaft 11 and the internal spline 21 through the oil injection holes 22 on the hub 2, and the gap between the external spline shaft 11 and the internal spline 21 and the grooves 31 on the internal spline 21 are filled with the hydraulic oil;
when the vehicle starts, the transmission shaft 1 drives the external spline shaft 11 to rotate (at this time, the rotation direction of the external spline shaft 11 is clockwise rotation, namely, the external spline shaft 11 rotates from left to right), the external spline shaft 11 drives the hub 2 to rotate through the internal spline 21, when the external spline shaft 11 drives the hub 2 to rotate, the lug 3 on the external spline shaft 11 moves inside the groove 31 and extrudes hydraulic oil inside the groove 31, the groove 31 is in a gourd shape, the lug 3 is located inside the groove 31, the inner diameter of one end, close to the key tooth side, of the external spline shaft 11 is smaller than the inner diameter of one end, far away from the key tooth side, of the groove 31, the lug 3 on the right side of the key tooth of the external spline shaft 11 (namely, the lug 3 on the right side) rotates left along with the external spline shaft 11, in the moving process of the lug 3 on the right side, the spline groove 4 on the lug 3 on the right side extrudes the hydraulic oil inside the groove 31 on the right side to one end, with the smaller inner diameter, of the groove 31, and the hydraulic oil inside the groove 31 on the right side moves to one end, with the larger inner diameter, of the groove 31, in the extruded state; in the moving process of the right-side bump 3, the distance between the right-side bump 3 and the inner wall of the right-side groove 31 is smaller and smaller, so that the extrusion speed of hydraulic oil in the right-side groove 31 by the right-side bump 3 is gradually reduced, and a damping effect is achieved;
because the flower groove 4 is sunken towards the center of the lug 3 (the flower groove 4 can be regarded as a concave pit sunken towards the center of the lug 3), the lug 3 is provided with the groove 31, so that the phenomenon that when the lug 3 on the right side of the key teeth of the external spline shaft 11 rotates leftwards along with the external spline shaft 11, a large amount of hydraulic oil in the groove 31 on the right side moves towards the end with the larger inner diameter, and damping cannot be formed is avoided.
When the convex block 3 (namely the left convex block 3) on the left side of the key teeth of the external spline shaft 11 rotates along with the external spline shaft 11, hydraulic oil in the left groove 31 is extruded, the flower groove 4 on the convex block 3 is pit-shaped, when the left convex block 3 extrudes the hydraulic oil in the left groove 31, the flower groove 4 extrudes the hydraulic oil in the groove 31, a buffering effect is achieved, the phenomenon that the matching clearance between the external spline shaft 11 and the internal spline 21 is too large due to the fact that the convex block 3 extrudes the hydraulic oil in the groove 31 is avoided, and abnormal sound occurs at the matching position of the hub 2 and the external spline shaft 11; meanwhile, as the outer surface of the bump 3 is provided with the beryllium bronze elastic part, the beryllium bronze on the bump 3 plays a role of buffering after the bump 3 is contacted with the groove 31, and abnormal sound caused by collision between the bump 3 and the groove 31 is avoided.
When the vehicle backs up, the rotation direction of the external spline shaft 11 is anticlockwise rotation, and the matching of the convex blocks 3 and the grooves 31 is the same.
The second embodiment:
as shown in fig. 5 to 7:
the shape of the bump 3 is conical.
Wherein:
A. the outer surface of the bump 3 is provided with an elastic layer; the elastic layer is beryllium copper.
When a vehicle starts or backs, the convex block 3 on the external spline shaft 11 moves towards the inside of the groove 31, the shape of the groove 31 in the embodiment is matched with that of the convex block 3, the convex block 3 is conical, when the convex block 3 moves towards the inside of the groove 31, the convex block 3 extrudes hydraulic oil in the groove 31, meanwhile, a gap between the convex block 3 and the groove 31 is gradually reduced, so that the hydraulic oil flowing out of the groove 31 is gradually reduced, the groove 31 and the convex block 3 form damping, and therefore the condition that the fit clearance between the external spline shaft 11 and the internal spline 21 is too large, and abnormal noise occurs at the fit part of the hub 2 and the external spline shaft 11 is reduced; meanwhile, as the beryllium bronze elastic part is arranged on the outer surface of the bump 3, the beryllium bronze on the bump 3 plays a role in buffering after the bump 3 is contacted with the groove 31, and abnormal sound caused by collision between the bump 3 and the groove 31 is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (6)
1. The spline silencing device comprises a transmission shaft (1) and a hub (2), wherein an external spline shaft (11) is arranged on the transmission shaft (1), an internal spline (21) is arranged on the hub (2), the external spline shaft (11) is matched with the internal spline (21), and a mounting nut (12) is arranged on the external spline shaft (11);
the method is characterized in that:
the key tooth side of the external spline shaft (11) is provided with a convex block (3), and the internal spline (21) is provided with a groove (31) matched with the convex block (3); the groove (31) is also positioned on the key tooth side of the internal spline (21);
an oil filling hole (22) is formed in the wheel hub (2), and hydraulic oil is filled into the inner spline (21) through the oil filling hole (22).
2. The spline mute of claim 1, wherein: the groove (31) is in a gourd shape, and the inner diameter of one end, close to the key tooth side of the outer spline shaft (11), of the groove (31) is smaller than the inner diameter of one end, far away from the key tooth side of the outer spline shaft (11), of the groove (31).
3. A spline silencing device according to claim 1, characterized in that: the lug (3) is provided with flower grooves (4) which are uniformly distributed along the axial direction of the external spline shaft (11), and the flower grooves (4) are sunken towards the center of the lug (3).
4. The spline mute of claim 1, wherein: the shape of the bump (3) is conical.
5. A spline silencing device according to claim 1, characterized in that: the outer surface of the bump (3) is provided with an elastic layer.
6. A spline silencing device according to claim 5, characterized in that: the elastic layer is beryllium copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182440.4A CN115614397B (en) | 2022-09-27 | 2022-09-27 | Spline silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182440.4A CN115614397B (en) | 2022-09-27 | 2022-09-27 | Spline silencing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115614397A true CN115614397A (en) | 2023-01-17 |
| CN115614397B CN115614397B (en) | 2023-09-26 |
Family
ID=84861386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211182440.4A Active CN115614397B (en) | 2022-09-27 | 2022-09-27 | Spline silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115614397B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184716A (en) * | 1984-02-29 | 1985-09-20 | Kinugawa Rubber Ind Co Ltd | Elastic shaft coupling |
| GB8716759D0 (en) * | 1986-07-19 | 1987-08-19 | Fichtel & Sachs Ag | Torsional vibration damper |
| GB8815876D0 (en) * | 1987-07-04 | 1988-08-10 | Daimler Benz Ag | Hydraulically damping bearing |
| US20020190450A1 (en) * | 2001-06-18 | 2002-12-19 | Kazuhide Honda | Damper mechanism for steering device |
| JP2010221862A (en) * | 2009-03-24 | 2010-10-07 | Toyota Motor Corp | Axle hub |
| CN101943224A (en) * | 2009-07-01 | 2011-01-12 | 通用汽车环球科技运作公司 | The double direction impulse absorption plant of clutch reaction plate |
| JP2012097881A (en) * | 2010-11-05 | 2012-05-24 | Jtekt Corp | Power transmission shaft |
| CN102720773A (en) * | 2012-06-13 | 2012-10-10 | 华锐风电科技(江苏)有限公司 | Static pressure spline device |
| JP2012219852A (en) * | 2011-04-05 | 2012-11-12 | Ntn Corp | Vehicle motor drive, and automobile |
| KR101401870B1 (en) * | 2013-07-04 | 2014-05-30 | 현대다이모스(주) | Non synchro type hub of hybrid drive unit |
| CN205686462U (en) * | 2016-06-28 | 2016-11-16 | 长城汽车股份有限公司 | Splined shaft and steering drive axle |
| CN206988315U (en) * | 2017-08-03 | 2018-02-09 | 河南同心传动股份有限公司 | A kind of slip yoke for truck drive shaft |
| JP2018080720A (en) * | 2016-11-14 | 2018-05-24 | 本田技研工業株式会社 | Power transmission device |
| CN110382918A (en) * | 2017-06-12 | 2019-10-25 | 日立建机株式会社 | The working truck for having the mobile devices with wheel |
| CN112145565A (en) * | 2020-08-31 | 2020-12-29 | 钟远锋 | Rigid coupling with long service life |
-
2022
- 2022-09-27 CN CN202211182440.4A patent/CN115614397B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184716A (en) * | 1984-02-29 | 1985-09-20 | Kinugawa Rubber Ind Co Ltd | Elastic shaft coupling |
| GB8716759D0 (en) * | 1986-07-19 | 1987-08-19 | Fichtel & Sachs Ag | Torsional vibration damper |
| GB8815876D0 (en) * | 1987-07-04 | 1988-08-10 | Daimler Benz Ag | Hydraulically damping bearing |
| US20020190450A1 (en) * | 2001-06-18 | 2002-12-19 | Kazuhide Honda | Damper mechanism for steering device |
| JP2010221862A (en) * | 2009-03-24 | 2010-10-07 | Toyota Motor Corp | Axle hub |
| CN101943224A (en) * | 2009-07-01 | 2011-01-12 | 通用汽车环球科技运作公司 | The double direction impulse absorption plant of clutch reaction plate |
| JP2012097881A (en) * | 2010-11-05 | 2012-05-24 | Jtekt Corp | Power transmission shaft |
| JP2012219852A (en) * | 2011-04-05 | 2012-11-12 | Ntn Corp | Vehicle motor drive, and automobile |
| CN102720773A (en) * | 2012-06-13 | 2012-10-10 | 华锐风电科技(江苏)有限公司 | Static pressure spline device |
| KR101401870B1 (en) * | 2013-07-04 | 2014-05-30 | 현대다이모스(주) | Non synchro type hub of hybrid drive unit |
| CN205686462U (en) * | 2016-06-28 | 2016-11-16 | 长城汽车股份有限公司 | Splined shaft and steering drive axle |
| JP2018080720A (en) * | 2016-11-14 | 2018-05-24 | 本田技研工業株式会社 | Power transmission device |
| CN110382918A (en) * | 2017-06-12 | 2019-10-25 | 日立建机株式会社 | The working truck for having the mobile devices with wheel |
| CN206988315U (en) * | 2017-08-03 | 2018-02-09 | 河南同心传动股份有限公司 | A kind of slip yoke for truck drive shaft |
| CN112145565A (en) * | 2020-08-31 | 2020-12-29 | 钟远锋 | Rigid coupling with long service life |
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| Publication number | Publication date |
|---|---|
| CN115614397B (en) | 2023-09-26 |
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