CN115614397B - Spline silencing device - Google Patents
Spline silencing device Download PDFInfo
- Publication number
- CN115614397B CN115614397B CN202211182440.4A CN202211182440A CN115614397B CN 115614397 B CN115614397 B CN 115614397B CN 202211182440 A CN202211182440 A CN 202211182440A CN 115614397 B CN115614397 B CN 115614397B
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- CN
- China
- Prior art keywords
- groove
- spline
- external spline
- spline shaft
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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 design and assembly of splines, 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 grooves are also positioned on the key tooth sides of the internal spline; the hub is provided with an oil filling hole through which hydraulic oil is filled into the internal spline; according to the invention, through the matching of the convex blocks and the grooves, the technical problem that abnormal sound occurs at the matching position of the internal spline and the external spline due to the fact that the matching clearance between the external spline and the internal spline is too large is solved.
Description
Technical Field
The invention relates to the field of design and assembly of splines, in particular to a spline silencing device.
Background
The involute spline has the advantages of strong bearing capacity, easy automatic centering, high production efficiency and the like, is widely applied to the automobile industry, wherein the automobile starts and backs a car through the engagement transmission torque of the internal spline of the hub bearing and the external spline shaft on the transmission shaft, but due to the influence of machining 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 microscopic elastic deformation at the moment of the advancing and backing of the automobile, and the fit position of the hub and the transmission shaft generates circumferential sliding (namely stick-slip friction) under the influence of the spline clearance and deformation, so that abnormal noise 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 external spline shaft and the internal spline are in interference fit in the prior art, so that the fit clearance between the external spline shaft and the internal spline is eliminated, however, the interference is too large in the technical means, so that the press-fit pressure between the external spline shaft and the internal spline is too large, and the internal spline is in 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 matching gap between an external spline shaft and an internal spline is overlarge, so that abnormal sound occurs at the matching position 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 grooves are also positioned on the key tooth sides of the internal spline;
the hub is provided with an oil filling hole through which hydraulic oil is filled into the internal spline.
Preferably, the groove is in a gourd shape, and the inner diameter of one end of the groove close to the key side of the external spline shaft is smaller than the inner diameter of one end of the groove far away from the key side of the external spline shaft.
Preferably, the convex blocks are provided with evenly distributed flower grooves along the axial direction of the external spline shaft, and the flower grooves are recessed towards the center of the convex blocks.
Preferably, the shape of the bump is tapered.
Preferably, the outer surface of the bump is provided with an elastic layer.
Preferably, the resilient layer is beryllium bronze.
The beneficial effects of the invention are as follows:
1. according to the spline silencing device, the transmission shaft drives the external spline shaft to rotate, when the external spline shaft drives the hub to rotate, the protruding block on the external spline shaft moves towards the inside of the groove and extrudes hydraulic oil in the groove, in the moving process of the right protruding block, the distance between the right protruding block and the right groove is smaller and smaller, so that the extrusion speed of the hydraulic oil in the right groove is gradually slowed down by the right protruding block, a damping effect is achieved, the fact that a fit gap between the external spline shaft and the internal spline is overlarge is reduced, and abnormal sound occurs at the fit position of the hub and the transmission shaft.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a block diagram of a bump;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a cross-sectional view of FIG. 2
FIG. 5 is a schematic view 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 transmission shaft; 11. an external spline shaft; 12. installing a screw cap; 2. a hub; 21. an internal spline; 22. an oil filling hole; 3. a bump; 31. a groove; 4. flower grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
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; grooves 31 are also located on the key flanks of the internal spline 21;
the hub 2 is provided with an oil filler hole 22, and hydraulic oil is filled into the internal spline 21 through the oil filler hole 22.
Wherein:
A. the groove 31 is in a gourd shape, and the inner diameter of the end of the groove 31 close to the key tooth side of the external spline shaft 11 is smaller than the inner diameter of the end of the groove 31 far away from the key tooth side of the external spline shaft 11.
B. The convex block 3 is provided with evenly distributed flower grooves 4 along the axial direction of the external spline shaft 11, and the flower grooves 4 are recessed towards the center of the convex block 3.
C. The outer surface of the bump 3 is provided with an elastic layer; the elastic layer is beryllium bronze.
During installation, firstly, the external spline shaft 11 is cooled by utilizing liquid nitrogen or liquid ammonia and other coolants, the external diameters of the external spline shaft 11 and the convex blocks 3 are reduced slightly under the influence of expansion caused by heat and contraction caused by cold, 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 installation nuts 12 are 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 cooperation of the installation nuts 12 and the transmission shaft 1, 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 hydraulic oil;
when the vehicle starts, the transmission shaft 1 drives the external spline shaft 11 to rotate (at the moment, the rotation direction of the external spline shaft 11 is clockwise, namely, the external spline shaft 11 drives the hub 2 to rotate from left to right 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 in the groove 31 and extrudes hydraulic oil in the groove 31, the groove 31 is in a calabash shape, the lug 3 is positioned in the groove 31, the inner diameter of one end of the groove 31, close to the key tooth side, of the external spline shaft 11 is smaller than the inner diameter of one end of the groove 31, far away from the key tooth side, of the external spline shaft 11, the lug 3 (namely, the right lug 3) on the right side of the key tooth of the external spline shaft 11 rotates leftwards along with the external spline shaft 11, in the moving process of the right lug 3, the flower groove 4 on the right lug 3 extrudes the hydraulic oil in the groove 31 to one end with the smaller inner diameter of the groove 31, and the hydraulic oil in the groove 31 moves to one end with the larger inner diameter of the groove 31 in the extruded state; in the moving process of the right protruding block 3, the distance between the right protruding block 3 and the inner wall of the right concave groove 31 is smaller and smaller, so that the speed of the right protruding block 3 for extruding hydraulic oil in the right concave groove 31 is gradually slowed down, and a damping effect is achieved;
because the spline groove 4 is recessed toward the center of the protruding block 3 (the spline groove 4 can be regarded as a recess recessed toward the center of the protruding block 3), the groove 31 is formed in the protruding block 3, and the phenomenon that a large amount of hydraulic oil in the groove 31 on the right side moves toward one end with a larger inner diameter and cannot form damping when the protruding block 3 on the right side of the key teeth of the external spline shaft 11 rotates leftwards along with the external spline shaft 11 is avoided.
When the cam 3 (i.e. the cam 3 on the left side) 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 side groove 31 is extruded, the flower groove 4 on the cam 3 is in a pit shape, when the cam 3 on the left side extrudes the hydraulic oil in the left side groove 31, the flower groove 4 extrudes the hydraulic oil in the groove 31, a buffer effect is achieved, and the situation that the fit clearance between the external spline shaft 11 and the internal spline 21 is overlarge is avoided through the hydraulic oil in the extrusion groove 31 of the cam 3, so that abnormal sound occurs at the fit position of the hub 2 and the external spline shaft 11 is avoided; meanwhile, as the elastic piece of beryllium bronze 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 contacts with the groove 31, so that abnormal sound caused by collision between the bump 3 and the groove 31 is avoided.
The rotation direction of the external spline shaft 11 is counterclockwise when the vehicle is reversed, and the matching of the protruding block 3 and the groove 31 is the same.
Embodiment two:
as shown in fig. 5 to 7:
the bump 3 has a tapered shape.
Wherein:
A. the outer surface of the bump 3 is provided with an elastic layer; the elastic layer is beryllium bronze.
When the vehicle starts or backs, the bump 3 on the external spline shaft 11 moves towards the inside of the groove 31, in this embodiment, the shape of the groove 31 is matched with the shape of the bump 3, because the shape of the bump 3 is conical, the bump 3 moves towards the inside of the groove 31, the bump 3 extrudes hydraulic oil in the groove 31, and meanwhile, the gap between the bump 3 and the groove 31 is gradually reduced so that the hydraulic oil flowing out of the groove 31 is gradually reduced, and the groove 31 and the bump 3 form damping, so that the situation that an oversized fit gap exists between the external spline shaft 11 and the internal spline 21, and abnormal sound occurs at the fit position of the hub 2 and the external spline shaft 11 is reduced; meanwhile, as the elastic piece of beryllium bronze 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 contacts with the groove 31, so that abnormal sound caused by collision between the bump 3 and the groove 31 is avoided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
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 grooves (31) are also located on the key tooth side of the internal spline (21);
the hub (2) is provided with oil holes (22), hydraulic oil is filled into the internal spline (21) through the oil holes (22), the shape of the groove (31) is a calabash shape, the inner diameter of one end of the groove (31) close to the key tooth side of the external spline shaft (11) is smaller than the inner diameter of one end of the groove (31) far away from the key tooth side of the external spline shaft (11), the convex blocks (3) are provided with evenly distributed flower grooves (4) along the axial direction of the external spline shaft (11), and the flower grooves (4) are recessed towards the center of the convex blocks (3);
the bump on the external spline shaft moves in the groove and extrudes hydraulic oil in the groove, and in the moving process of the right bump, the distance between the right bump and the inner wall of the right groove is smaller and smaller, so that the speed of extruding the hydraulic oil in the right groove is gradually slowed by the right bump, and a damping effect is achieved; the grooves are formed in the convex blocks, so that the phenomenon that a large amount of hydraulic oil in the grooves on the right side moves to one end with larger inner diameter and damping cannot be formed when the convex blocks on the right side of the spline teeth of the external spline shaft rotate left along with the axial direction of the external spline is avoided; simultaneously, the gap between the convex block and the concave groove is gradually reduced, so that hydraulic oil flowing out of the concave groove is gradually reduced, and the concave groove and the convex block form damping, so that the situation that a fit gap is overlarge between the external spline shaft and the internal spline, and abnormal sound occurs at the fit position of the hub and the external spline shaft is reduced.
2. The spline muting device according to claim 1, characterized in that: the outer surface of the protruding block (3) is provided with an elastic layer.
3. The spline muting device according to claim 2, characterized in that: the elastic layer is beryllium bronze.
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 CN115614397A (en) | 2023-01-17 |
| CN115614397B true 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 (14)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4571341B2 (en) * | 2001-06-18 | 2010-10-27 | 水島プレス工業株式会社 | Damper mechanism of steering device |
-
2022
- 2022-09-27 CN CN202211182440.4A patent/CN115614397B/en active Active
Patent Citations (14)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115614397A (en) | 2023-01-17 |
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