CN107478442A - Subframe fatigue test moment of flexure, torque cancellation element - Google Patents
Subframe fatigue test moment of flexure, torque cancellation element Download PDFInfo
- Publication number
- CN107478442A CN107478442A CN201710691720.0A CN201710691720A CN107478442A CN 107478442 A CN107478442 A CN 107478442A CN 201710691720 A CN201710691720 A CN 201710691720A CN 107478442 A CN107478442 A CN 107478442A
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- Prior art keywords
- main shaft
- cancellation element
- flexure
- torque cancellation
- axle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention is intended to provide a kind of subframe fatigue test moment of flexure, torque cancellation element, including main shaft, arrangement for adjusting height, universal joint, power transmission shaft, torque cancellation element；Described main shaft is installed on arrangement for adjusting height, can vertically be moved up and down in the presence of arrangement for adjusting height；The both ends of described main shaft are divided into is provided with universal joint positioned at the both sides of arrangement for adjusting height, the front end of main shaft, and the rear end of main shaft is provided with workpiece connecting portion；Described torque cancellation element is connected by main shaft with universal joint, the torque cancellation element other end and transmission axis connection.The defects of device overcomes prior art, have and eliminate moment of flexure and torque, improve the characteristics of service life and measuring accuracy.
Description
Technical field
The present invention relates to fatigue test device field, and in particular to a kind of subframe fatigue test moment of flexure, torque eliminate dress
Put.
Background technology
Subframe can regard the skeleton of tandem axle as, be the part of tandem axle.Subframe is not complete
Vehicle frame, simply support tandem axle, suspension and be connected again with " positive vehicle frame " by it, traditionally title " subframe ".The effect of subframe
It is barrier vibration noise, reduces it and be directly entered compartment；Subframe is more multiple as the important component on chassis, its force-bearing situation
It is miscellaneous, bear various load of different nature, including static(al), impact, alternate load.Therefore, to its intensity and Fatigue Strength Analysis
Check most important.In addition, in the prior art, when carrying out the fatigue strength experiment of subframe longitudinal direction, workpiece, sensor, start
Device（Power source）Between power transmission shaft need strictly be located along the same line, although existing adjusting means has reached more high-precision
Degree, but will realize that strict conllinear difficulty is big, cost is high, or even can not realize truly conllinear, and power transmission shaft can not
Strictly collinearly cause moment of flexure and torque occur between their power transmission shaft, even if moment of flexure or torque very little, but in fatigue strength
Under conditions of the intensity and experiment number of experiment, harm caused by moment of flexure is exaggerated for test etc., gently then damages power transmission shaft, heavy then damage
Bad sensor, while the service life and measuring accuracy of fatigue strength experimental provision are reduced, the efficiency of test is reduced, significantly
Add the cost of fatigue strength experiment.
The content of the invention
The present invention is intended to provide a kind of subframe fatigue test moment of flexure, torque cancellation element, the device overcome prior art
The defects of, have and eliminate moment of flexure and torque, improve the characteristics of service life and measuring accuracy.
Technical scheme is as follows：
A kind of subframe fatigue test moment of flexure, torque cancellation element, including main shaft, arrangement for adjusting height, universal joint, power transmission shaft,
Torque cancellation element；
Described main shaft is installed on arrangement for adjusting height, can vertically be lifted in the presence of arrangement for adjusting height
Motion；
The both ends of described main shaft are divided into is provided with universal joint positioned at the both sides of arrangement for adjusting height, the front end of main shaft, main shaft
Rear end is provided with workpiece connecting portion；
Described torque cancellation element is connected by main shaft with universal joint, the torque cancellation element other end and transmission axis connection.
Preferably, described torque cancellation element includes axle, sleeve, taper roll bearing, mounting flange；
Left blank with transmission axis connection, the other end described axle one end；Described axle is provided with prominent round platform, round platform both sides formal dress
A pair of taper roll bearings, the inner ring of taper roll bearing is fixedly connected with axle；
Described sleeve is placed on outside axle, and the inwall of sleeve and the outer ring of taper roll bearing are interference fitted；Described sleeve with
Main shaft connects.
Preferably, described sleeve is provided with the boss of annular on the inwall close to one end of main shaft, described boss
Internal diameter is less than the external diameter of taper roll bearing, and the right flank of taper roll bearing is in contact with boss；Described mounting flange is set
In sleeve on one end of power transmission shaft, it is in contact with the left surface of taper roll bearing；Described boss and mounting flange is total to
The position limiting structure of the paired taper roll bearing of isomorphism.
Preferably, described axle is less than the part for corresponding to taper roll bearing on axle close to the section diameter of driven shaft.
Preferably, described arrangement for adjusting height includes base, support frame, motor, screw mandrel, guide pad, bearing, led
Rail, connector；
Described support frame is door type structure, and bottom is connected with base；Described motor is at the top of support frame, driving electricity
The axle of machine is connected through support frame top with the screw mandrel in support frame top；Connector passes through screwed hole and screw mandrel thereon
Connection, described guide pad are connected with connector bottom；
Described guide rail is installed on support frame side wall, and described guide pad sidepiece is connected with guide rail, can moved up and down along guide rail；
Main shaft passes guide pad both sides, is connected by bearing with guide pad.
Preferably, the support base of triangle is included, described support base is connected with base and support frame respectively, to support
Frame is supported.
Preferably, described main shaft is installed on the inner ring of bearing by axle sleeve interference fit.
Preferably, described axle sleeve is graphite copper sheathing.
Preferably, in addition to graduated scale, described graduated scale are located on the side of riser vertically.
The course of work of the present invention is as follows：Moment of flexure, torque cancellation element are installed, workpiece connecting portion is connected with workpiece, is driven
Axle is connected with actuator, and regulation arrangement for adjusting height causes main shaft to be horizontal, and regulation actuator causes power transmission shaft and master
Axle is in same straight line as far as possible；Fatigue test starts, and actuator drives power transmission shaft motion, and universal joint, main shaft linkage act on
Workpiece；Universal joint eliminates the moment of flexure of power transmission shaft and main shaft, and torque cancellation element eliminates the torque of power transmission shaft and main shaft, it is ensured that every time
Steady, elimination side force and the twisting resistance of motion.
The present invention reduces main shaft using the combination of high-precision arrangement for adjusting height and universal joint by arrangement for adjusting height
With the height tolerance of power transmission shaft, moment of flexure caused by the faint deviation of main shaft and power transmission shaft is eliminated by universal joint afterwards, is eliminated tired
Side force in labor test run；Tested by torque cancellation element dispelling fatigue simultaneously during between power transmission shaft and main shaft
Torque, the service life of main shaft, power transmission shaft and sensor is improved, reduce testing cost；And due to disappearing for moment of flexure and torque
Remove, test result also can be more accurate；Also, axle is smaller close to the section diameter of driven shaft so that taper roll bearing is installed
It is more convenient, longer mounting distance is avoided, reduces installation difficulty.
Brief description of the drawings
Fig. 1 is subframe fatigue test moment of flexure provided by the invention, the structural representation of torque cancellation element；
Fig. 2 is subframe fatigue test moment of flexure provided by the invention, the arrangement for adjusting height structural representation of torque cancellation element；
Fig. 3 is subframe fatigue test moment of flexure provided by the invention, the structural representation of the torque cancellation element of torque cancellation element
Figure；
Each several part title and sequence number are as follows in figure：
1 is main shaft, and 2 be universal joint, and 3 be power transmission shaft, and 4 be workpiece connecting portion, and 5 be axle, and 6 be sleeve, and 7 be taper roll bearing, 8
It is round platform for mounting flange, 9,10 be boss, and 11 be base, and 12 be support frame, and 13 be motor, and 14 be screw mandrel, and 15 be to lead
To block, 16 be bearing, and 17 be guide rail, and 18 be connector, and 19 be support base, and 20 be graduated scale.
Embodiment
The present invention is illustrated with reference to the accompanying drawings and examples.
Embodiment 1
As Figure 1-3, the subframe fatigue test moment of flexure of the present embodiment offer, torque cancellation element, including main shaft 1, height
Adjusting means, universal joint 2, power transmission shaft 3, torque cancellation element；
Described main shaft 1 is installed on arrangement for adjusting height, can vertically be risen in the presence of arrangement for adjusting height
Drop motion；
The both ends of described main shaft 1 are divided into is provided with universal joint 2, main shaft positioned at the both sides of arrangement for adjusting height, the front end of main shaft 1
1 rear end is provided with workpiece connecting portion 4；
Described torque cancellation element is connected by main shaft 1 with universal joint 2, and the torque cancellation element other end is connected with power transmission shaft 3；
Described torque cancellation element includes axle 5, sleeve 6, taper roll bearing 7, mounting flange 8；
Described one end of axle 5 is connected with power transmission shaft 3, and the other end is left blank；Described axle 5 is provided with prominent round platform 9,9 liang of round platform
A pair of taper roll bearings of side formal dress 7, the inner ring of taper roll bearing 7 are fixedly connected with axle 5；
Described sleeve 6 is placed on outside axle 5, and the inwall of sleeve 6 is interference fitted with the outer ring of taper roll bearing 7；Described set
Cylinder 6 is connected with main shaft 1；Described sleeve 6 is provided with the boss 10 of annular on the inwall close to one end of main shaft 1, and described is convex
The internal diameter of platform 10 is less than the external diameter of taper roll bearing 7, and the right flank of taper roll bearing 7 is in contact with boss 10；Described
Mounting flange 8 on one end of power transmission shaft 3, is in contact located at sleeve 6 with the left surface of taper roll bearing 7；Described is convex
Platform 10 and mounting flange 8 collectively form the position limiting structure to taper roll bearing 7；
Described axle 5 is less than the part for corresponding to taper roll bearing 7 on axle 5 close to the section diameter of driven shaft 3；
Described arrangement for adjusting height include base 11, support frame 12, motor 13, screw mandrel 14, guide pad 15, bearing 16,
Guide rail 17, connector 18；
Described support frame 12 is door type structure, and bottom is connected with base 11；Described motor 13 pushes up located at support frame 12
Portion, the axle of motor 13 are connected through the top of support frame 12 with the screw mandrel 14 in the top of support frame 12；Connector 18 is logical
The screwed hole crossed thereon is connected with screw mandrel 14, and described guide pad 15 is connected with the bottom of connector 18；
Described guide rail 17 is installed on the side wall of support frame 12, and the described sidepiece of guide pad 15 is connected with guide rail 17, can be along guide rail
17 move up and down；Main shaft 1 passes the both sides of guide pad 15, is connected by bearing 16 with guide pad 15；
Also include the support base 19 of triangle, described support base 19 is connected with base 11 and support frame 12 respectively, to support frame
12 are supported；
Described main shaft 1 is installed on the inner ring of bearing 16 by axle sleeve interference fit；Described axle sleeve is graphite copper sheathing；
Also include graduated scale 20, described graduated scale 20 is vertically on the side of riser 13.
The course of work of the present embodiment is as follows：
Moment of flexure, torque cancellation element are installed, workpiece connecting portion 4 is connected with workpiece, and power transmission shaft 3 is connected with actuator, regulation height
Adjusting means causes main shaft 1 to be horizontal, and regulation actuator causes power transmission shaft 3 to be in same straight line as far as possible with main shaft 1；
Fatigue test starts, and actuator drives power transmission shaft 3 to move, and universal joint 2, the linkage of main shaft 1 act on workpiece；Universal joint 2, which eliminates, to be passed
The moment of flexure of moving axis and main shaft, torque cancellation element eliminate the torque of power transmission shaft and main shaft, it is ensured that moves every time is steady, eliminates side
To power and twisting resistance.
Claims (9)
1. a kind of subframe fatigue test moment of flexure, torque cancellation element, including main shaft（1）, arrangement for adjusting height, universal joint（2）、
Power transmission shaft（3）, torque cancellation element；It is characterized in that：
Described main shaft（1）It is installed on arrangement for adjusting height, can be vertically done in the presence of arrangement for adjusting height
Elevating movement；
Described main shaft（1）Both ends be divided into positioned at the both sides of arrangement for adjusting height, main shaft（1）Front end be provided with universal joint
（2）, main shaft（1）Rear end be provided with workpiece connecting portion（4）；
Described torque cancellation element passes through main shaft（1）With universal joint（2）Connection, the torque cancellation element other end and power transmission shaft
（3）Connection.
2. subframe fatigue test moment of flexure as claimed in claim 1, torque cancellation element, it is characterised in that：
Described torque cancellation element includes axle（5）, sleeve（6）, taper roll bearing（7）, mounting flange（8）；
Described axle（5）One end and power transmission shaft（3）Connection, the other end are left blank；Described axle（5）It is provided with prominent round platform（9）,
Round platform（9）A pair of taper roll bearings of both sides formal dress（7）, taper roll bearing（7）Inner ring and axle（5）It is fixedly connected；
Described sleeve（6）It is placed on axle（5）Outside, sleeve（6）Inwall and taper roll bearing（7）Outer ring interference fit；
Described sleeve（6）With main shaft（1）Connection.
3. subframe fatigue test moment of flexure as claimed in claim 2, torque cancellation element, it is characterised in that：Described sleeve
（6）Close to main shaft（1）One end inwall be provided with annular boss（10）, described boss（10）Internal diameter be less than circular cone
Roller bearing（7）External diameter, taper roll bearing（7）Right flank and boss（10）It is in contact；Described mounting flange（8）If
In sleeve（6）Close to power transmission shaft（3）One end on, with taper roll bearing（7）Left surface be in contact；Described boss（10）
And mounting flange（8）Collectively form to taper roll bearing（7）Position limiting structure.
4. subframe fatigue test moment of flexure as claimed in claim 2, torque cancellation element, it is characterised in that：
Described axle（5）Close to driven shaft（3）Section diameter be less than axle（5）It is upper to correspond to taper roll bearing（7）Part.
5. subframe fatigue test moment of flexure as claimed in claim 1, torque cancellation element, it is characterised in that：
Described arrangement for adjusting height includes base（11）, support frame（12）, motor（13）, screw mandrel（14）, guide pad
（15）, bearing（16）, guide rail（17）, connector（18）；
Described support frame（12）For door type structure, bottom and base（11）Connection；Described motor（13）Located at support
Frame（12）Top, motor（13）Axle pass through support frame（12）Top is with being located at support frame（12）Screw mandrel in top（14）
Connection；Connector（18）Pass through screwed hole and screw mandrel thereon（14）Connection, described guide pad（15）With connector（18）Under
Portion connects；
Described guide rail（17）It is installed on support frame（12）Side wall, described guide pad（15）Sidepiece and guide rail（17）Connection, energy
Enough along guide rail（17）Move up and down；Main shaft（1）Pass guide pad（15）Both sides, pass through bearing（16）With guide pad（15）Connection.
6. subframe fatigue test moment of flexure as claimed in claim 5, torque cancellation element, it is characterised in that：Also include triangle
The support base of shape（19）, described support base（19）Respectively with base（11）And support frame（12）Connection, to support frame（12）Enter
Row support.
7. subframe fatigue test moment of flexure as claimed in claim 5, torque cancellation element, it is characterised in that：
Described main shaft（1）Bearing is installed on by axle sleeve interference fit（16）Inner ring on.
8. subframe fatigue test moment of flexure as claimed in claim 7, torque cancellation element, it is characterised in that：
Described axle sleeve is graphite copper sheathing.
9. the subframe fatigue test moment of flexure as described in claim 1-8 any one, torque cancellation element, it is characterised in that：
Also include graduated scale（20）, described graduated scale（20）It is located at riser vertically（13）Side on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691720.0A CN107478442B (en) | 2017-08-14 | 2017-08-14 | Subframe fatigue test moment of flexure, torque cancellation element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691720.0A CN107478442B (en) | 2017-08-14 | 2017-08-14 | Subframe fatigue test moment of flexure, torque cancellation element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107478442A true CN107478442A (en) | 2017-12-15 |
| CN107478442B CN107478442B (en) | 2019-05-10 |
Family
ID=60599361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710691720.0A Expired - Fee Related CN107478442B (en) | 2017-08-14 | 2017-08-14 | Subframe fatigue test moment of flexure, torque cancellation element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107478442B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975015A (en) * | 2019-03-13 | 2019-07-05 | 重庆电子工程职业学院 | Big torque clutch device for dynamically detecting |
| CN110146372A (en) * | 2019-05-06 | 2019-08-20 | 中国电力科学研究院有限公司 | The loading device and loading method of load test are pulled out on the basis of a kind of |
| CN115575114A (en) * | 2022-12-09 | 2023-01-06 | 溧阳市新力机械铸造有限公司 | Strength detection device of motor shaft casting |
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| CN202330031U (en) * | 2011-11-28 | 2012-07-11 | 上海中国弹簧制造有限公司 | Simulating auxiliary frame assembly for automobile stabilizer bar rack fatigue tests |
| KR101326848B1 (en) * | 2012-06-04 | 2013-11-11 | 현대자동차주식회사 | Characteristic test device for suspension module |
| CN103761363A (en) * | 2013-12-26 | 2014-04-30 | 广西科技大学 | Intensity and fatigue analysis method for auxiliary frame of passenger vehicle |
| CN205843938U (en) * | 2016-07-05 | 2016-12-28 | 广西壮族自治区汽车拖拉机研究所 | Subframe fatigue test frock |
| CN207133056U (en) * | 2017-08-14 | 2018-03-23 | 广西科技大学 | Subframe fatigue test moment of flexure, torque cancellation element |
-
2017
- 2017-08-14 CN CN201710691720.0A patent/CN107478442B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202330031U (en) * | 2011-11-28 | 2012-07-11 | 上海中国弹簧制造有限公司 | Simulating auxiliary frame assembly for automobile stabilizer bar rack fatigue tests |
| KR101326848B1 (en) * | 2012-06-04 | 2013-11-11 | 현대자동차주식회사 | Characteristic test device for suspension module |
| CN103761363A (en) * | 2013-12-26 | 2014-04-30 | 广西科技大学 | Intensity and fatigue analysis method for auxiliary frame of passenger vehicle |
| CN205843938U (en) * | 2016-07-05 | 2016-12-28 | 广西壮族自治区汽车拖拉机研究所 | Subframe fatigue test frock |
| CN207133056U (en) * | 2017-08-14 | 2018-03-23 | 广西科技大学 | Subframe fatigue test moment of flexure, torque cancellation element |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975015A (en) * | 2019-03-13 | 2019-07-05 | 重庆电子工程职业学院 | Big torque clutch device for dynamically detecting |
| CN109975015B (en) * | 2019-03-13 | 2020-08-21 | 重庆电子工程职业学院 | Dynamic detection device for large-torque coupler |
| CN110146372A (en) * | 2019-05-06 | 2019-08-20 | 中国电力科学研究院有限公司 | The loading device and loading method of load test are pulled out on the basis of a kind of |
| CN110146372B (en) * | 2019-05-06 | 2024-05-24 | 中国电力科学研究院有限公司 | Loading device and loading method for foundation pull-up load test |
| CN115575114A (en) * | 2022-12-09 | 2023-01-06 | 溧阳市新力机械铸造有限公司 | Strength detection device of motor shaft casting |
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| Publication number | Publication date |
|---|---|
| CN107478442B (en) | 2019-05-10 |
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Granted publication date: 20190510 Termination date: 20210814 |