CN107478442B - Subframe fatigue test moment of flexure, torque cancellation element - Google Patents
Subframe fatigue test moment of flexure, torque cancellation element Download PDFInfo
- Publication number
- CN107478442B CN107478442B CN201710691720.0A CN201710691720A CN107478442B CN 107478442 B CN107478442 B CN 107478442B CN 201710691720 A CN201710691720 A CN 201710691720A CN 107478442 B CN107478442 B CN 107478442B
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- Prior art keywords
- main shaft
- cancellation element
- flexure
- torque cancellation
- fatigue test
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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
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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
- 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, height adjustment device, universal joint, transmission shaft, torque cancellation element；The main shaft is installed on height adjustment device, can be moved up and down along the vertical direction under the action of height adjustment device；The both ends of the main shaft are divided into positioned at the two sides of height adjustment device, and the front end of main shaft is equipped with universal joint, and the rear end of main shaft is equipped with workpiece interconnecting piece；The torque cancellation element is connect by main shaft with universal joint, the torque cancellation element other end and transmission axis connection.The device overcomes the deficiencies of existing technologies, and has the characteristics that eliminate moment of flexure and torque, improve service life and measuring accuracy.
Description
Technical field
The present invention relates to fatigue test device fields, and in particular to dress is eliminated in a kind of subframe fatigue test moment of flexure, torque
It sets.
Background technique
Subframe can regard the skeleton of tandem axle as, be the component part of tandem axle.Subframe is not complete
Vehicle frame, only bearing tandem axle, suspension are connected with " positive vehicle frame " again by it, traditionally claim " subframe ".The effect of subframe
It is barrier vibration noise, reduces it and be directly entered compartment；For subframe as the important component on chassis, force-bearing situation is more multiple
It is miscellaneous, bear various load of different nature, including static(al), impact, alternating load.Therefore, to its intensity and Fatigue Strength Analysis
It checks most important.In addition, in the prior art, when carrying out the experiment of subframe longitudinal direction fatigue strength, workpiece, sensor, actuation
Between device (power source) transmission shaft needs be strictly located along the same line, although existing regulating device have reached it is more high-precision
Degree, but will realize that stringent conllinear difficulty is big, at high cost, or even cannot achieve truly conllinear, and transmission shaft can not
Strictly collinearly make moment of flexure and torque occur between their transmission shaft, even if moment of flexure or torque very little, but in fatigue strength
Under conditions of the intensity and experiment number of experiments, the harm that moment of flexure generates is amplified for test etc., gently then damages 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
Increase the cost of fatigue strength experiment.
Summary 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 the prior art
Defect, have the characteristics that eliminate moment of flexure and torque, improve 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, height adjustment device, universal joint, transmission
Axis, torque cancellation element；
The main shaft is installed on height adjustment device, can be done along the vertical direction under the action of height adjustment device
Elevating movement；
The both ends of the main shaft are divided into positioned at the two sides of height adjustment device, and the front end of main shaft is equipped with universal joint, main
The rear end of axis is equipped with workpiece interconnecting piece；
The torque cancellation element is connect by main shaft with universal joint, and the torque cancellation element other end and transmission shaft connect
It connects.
Preferably, the torque cancellation element includes axis, sleeve, tapered roller bearing, mounting flange；
Described axis one end and transmission axis connection, the other end is left a blank；The axis is equipped with rotary table outstanding, rotary table two sides
Formal dress a pair of tapered roller bearing, the inner ring of tapered roller bearing is fixedly connected with axis；
The sleeve is placed on except axis, and the inner wall of sleeve and the outer ring of tapered roller bearing are interference fitted；The set
Cylinder is connect with main shaft.
Preferably, the sleeve is equipped with the boss of annular on the inner wall close to one end of main shaft, the boss
Internal diameter is less than the outer diameter of tapered roller bearing, and the right side of tapered roller bearing is in contact with boss；The mounting flange is set
In sleeve on one end of transmission shaft, it is in contact with the left side of tapered roller bearing；The boss and mounting flange is total
The position limiting structure of the pairs of tapered roller bearing of isomorphism.
Preferably, the axis is less than the part for corresponding to tapered roller bearing on axis close to the section diameter of driven shaft.
Preferably, the height adjustment device includes pedestal, support frame, driving motor, screw rod, guide pad, bearing, leads
Rail, connector；
The support frame is door type structure, and bottom is connect with pedestal；The driving motor is set at the top of support frame, is driven
The axis of dynamic motor is passed through and is connect at the top of support frame with the screw rod being located at the top of support frame；Connector by threaded hole thereon with
Screw rod connection, the guide pad are connect with connector lower part；
The guide rail is installed on support frame side wall, and the guide pad side is connect with guide rail, can be above and below guide rail
Movement；Main shaft is pierced by guide pad two sides, is connect by bearing with guide pad.
It preferably, further include the support base of triangle, the support base is connect with pedestal and support frame respectively, to support
Frame is supported.
Preferably, the main shaft is installed on the inner ring of bearing by axle sleeve interference fit.
Preferably, the axle sleeve is graphite copper sheathing.
It preferably, further include graduated scale, the graduated scale is set to vertically on the side of support frame.
The course of work of the invention is as follows: installation moment of flexure, torque cancellation element, workpiece interconnecting piece are connect with workpiece, are driven
Axis is connect with actuator, adjusts height adjustment device and main shaft is in a horizontal position, and is adjusted actuator and is made transmission shaft and master
Axis is in same straight line as far as possible；Fatigue test starts, and actuator drives transmission shaft movement, and universal joint, main shaft linkage act on
Workpiece；Universal joint eliminates the moment of flexure of transmission shaft and main shaft, and torque cancellation element eliminates the torque of transmission shaft and main shaft, it is ensured that every time
Steady, elimination lateral force and the twisting resistance of movement.
The present invention uses the combination of high-precision height adjustment device and universal joint, reduces main shaft by height adjustment device
With the height tolerance of transmission shaft, moment of flexure caused by the faint deviation of main shaft and transmission shaft is eliminated by universal joint later, is eliminated tired
Lateral force in labor test run；Simultaneously by torque cancellation element eliminate fatigue test during between transmission shaft and main shaft
Torque improves the service life of main shaft, transmission shaft and sensor, reduces testing cost；And due to disappearing for moment of flexure and torque
It removes, test result also can be more accurate；Also, axis is smaller close to the section diameter of driven shaft, so that tapered roller bearing is installed
It is more convenient, longer mounting distance is avoided, installation difficulty is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of subframe fatigue test moment of flexure provided by the invention, torque cancellation element；
Fig. 2 is subframe fatigue test moment of flexure provided by the invention, the height adjustment device structure of torque cancellation element is shown
It is intended to；
Fig. 3 be subframe fatigue test moment of flexure provided by the invention, torque cancellation element torque cancellation element structure
Schematic diagram；
Each section title and serial number are as follows in figure:
1 is main shaft, and 2 be universal joint, and 3 be transmission shaft, and 4 be workpiece interconnecting piece, and 5 be axis, and 6 be sleeve, and 7 be taper roller axis
It holds, 8 be mounting flange, and 9 be rotary table, and 10 be boss, and 11 be pedestal, and 12 be support frame, and 13 be driving motor, and 14 be screw rod, 15
It is bearing for guide pad, 16,17 be guide rail, and 18 be connector, and 19 be support base, and 20 be graduated scale.
Specific embodiment
The present invention is illustrated with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1-3, subframe fatigue test moment of flexure provided in this embodiment, torque cancellation element, including main shaft 1,
Height adjustment device, universal joint 2, transmission shaft 3, torque cancellation element；
The main shaft 1 is installed on height adjustment device, can be under the action of height adjustment device along the vertical direction
It moves up and down；
The both ends of the main shaft 1 are divided into positioned at the two sides of height adjustment device, and the front end of main shaft 1 is equipped with universal joint 2,
The rear end of main shaft 1 is equipped with workpiece interconnecting piece 4；
The torque cancellation element is connect by main shaft 1 with universal joint 2, the torque cancellation element other end and transmission shaft 3
Connection；
The torque cancellation element includes axis 5, sleeve 6, tapered roller bearing 7, mounting flange 8；
Described 5 one end of axis is connect with transmission shaft 3, and the other end is left a blank；The axis 5 is equipped with rotary table 9 outstanding, rotary table
9 two sides formal dress a pair of tapered roller bearings 7, the inner ring of tapered roller bearing 7 is fixedly connected with axis 5；
The sleeve 6 is placed on except axis 5, and the inner wall of sleeve 6 and the outer ring of tapered roller bearing 7 are interference fitted；It is described
Sleeve 6 connect with main shaft 1；The sleeve 6 is equipped with the boss 10 of annular on the inner wall close to one end of main shaft 1, described
Boss 10 internal diameter be less than tapered roller bearing 7 outer diameter, the right side of tapered roller bearing 7 is in contact with boss 10；Institute
The mounting flange 8 stated is set to sleeve 6 on one end of transmission shaft 3, is in contact with the left side of tapered roller bearing 7；It is described
Boss 10 and mounting flange 8 collectively form the position limiting structure to tapered roller bearing 7；
The axis 5 is less than the part for corresponding to tapered roller bearing 7 on axis 5 close to the section diameter of driven shaft 3；
The height adjustment device includes pedestal 11, support frame 12, driving motor 13, screw rod 14, guide pad 15, bearing
16, guide rail 17, connector 18；
The support frame 12 is door type structure, and bottom is connect with pedestal 11；The driving motor 13 is set to support frame
12 tops, the axis of driving motor 13 pass through 12 top of support frame and connect with the screw rod 14 being located in 12 top of support frame；Connector
18 are connect by threaded hole thereon with screw rod 14, and the guide pad 15 is connect with 18 lower part of connector；
The guide rail 17 is installed on 12 side wall of support frame, and 15 side of guide pad is connect with guide rail 17, Neng Gouyan
Guide rail 17 moves up and down；Main shaft 1 is pierced by 15 two sides of guide pad, is connect by bearing 16 with guide pad 15；
It further include the support base 19 of triangle, the support base 19 is connect with pedestal 11 and support frame 12 respectively, to branch
Support 12 is supported；
The main shaft 1 is installed on the inner ring of bearing 16 by axle sleeve interference fit；The axle sleeve is graphite copper sheathing；
It further include graduated scale 20, the graduated scale 20 is vertically on the side of support frame 12.
The course of work of the present embodiment is as follows:
Moment of flexure, torque cancellation element are installed, workpiece interconnecting piece 4 is connect with workpiece, and transmission shaft 3 is connect with actuator, is adjusted
Height adjustment device is in a horizontal position main shaft 1, adjusts actuator and makes transmission shaft 3 with main shaft 1 as far as possible in same
Straight line；Fatigue test starts, and actuator drives transmission shaft 3 to move, and universal joint 2, the linkage of main shaft 1 act on workpiece；Universal joint 2 disappears
Except the moment of flexure of transmission shaft and main shaft, torque cancellation element eliminates the torque of transmission shaft and main shaft, it is ensured that is moved every time is steady, disappears
Except lateral force and twisting resistance.
Claims (9)
1. a kind of subframe fatigue test moment of flexure and torque cancellation element, including main shaft (1), height adjustment device, universal joint
(2), transmission shaft (3), torque cancellation element；It is characterized by:
The main shaft (1) is installed on height adjustment device, can be done along the vertical direction under the action of height adjustment device
Elevating movement；
The both ends of the main shaft (1) are divided into positioned at the two sides of height adjustment device, and the front end of main shaft (1) is equipped with universal joint
(2), the rear end of main shaft (1) is equipped with workpiece interconnecting piece (4)；
The torque cancellation element is connect by main shaft (1) with universal joint (2), the torque cancellation element other end and transmission shaft
(3) it connects.
2. subframe fatigue test moment of flexure as described in claim 1 and torque cancellation element, it is characterised in that:
The torque cancellation element includes axis (5), sleeve (6), tapered roller bearing (7), mounting flange (8)；
Described axis (5) one end is connect with transmission shaft (3), and the other end is left a blank；The axis (5) is equipped with rotary table outstanding (9),
The inner ring of rotary table (9) two sides formal dress a pair of tapered roller bearing (7), tapered roller bearing (7) is fixedly connected with axis (5)；
The sleeve (6) is placed on except axis (5), and the inner wall of sleeve (6) and the outer ring of tapered roller bearing (7) are interference fitted；
The sleeve (6) is connect with main shaft (1)；The mounting flange (8) is set to sleeve (6) on the one end of transmission shaft (3),
It is in contact with the left side of tapered roller bearing (7).
3. subframe fatigue test moment of flexure as claimed in claim 2 and torque cancellation element, it is characterised in that: the sleeve
(6) boss (10) of annular is equipped on the inner wall close to the one end of main shaft (1), the internal diameter of the boss (10) is less than circular cone
The right side of the outer diameter of roller bearing (7), tapered roller bearing (7) is in contact with boss (10)；The boss (10) and solid
Determine flange (8) and collectively forms position limiting structure to tapered roller bearing (7).
4. subframe fatigue test moment of flexure as claimed in claim 2 and torque cancellation element, it is characterised in that:
Section diameter of the axis (5) close to driven shaft (3) is less than the part for corresponding to tapered roller bearing (7) on axis (5).
5. subframe fatigue test moment of flexure as described in claim 1 and torque cancellation element, it is characterised in that:
The height adjustment device includes pedestal (11), support frame (12), driving motor (13), screw rod (14), guide pad
(15), bearing (16), guide rail (17), connector (18)；
The support frame (12) is door type structure, and bottom is connect with pedestal (11)；The driving motor (13) is set to support
At the top of frame (12), the axis of driving motor (13) passes through at the top of support frame (12) and is located at the screw rod (14) at the top of support frame (12)
Connection；Connector (18) is connect by threaded hole thereon with screw rod (14), under the guide pad (15) and connector (18)
Portion's connection；
The guide rail (17) is installed on support frame (12) side wall, and the guide pad (15) side is connect with guide rail (17), energy
It is enough to move up and down along guide rail (17)；Main shaft (1) is pierced by guide pad (15) two sides, is connect by bearing (16) with guide pad (15).
6. subframe fatigue test moment of flexure as claimed in claim 5 and torque cancellation element, it is characterised in that: further include triangle
The support base (19) of shape, the support base (19) are connect with pedestal (11) and support frame (12) respectively, to support frame (12) into
Row support.
7. subframe fatigue test moment of flexure as claimed in claim 5 and torque cancellation element, it is characterised in that:
The main shaft (1) is installed on the inner ring of bearing (16) by axle sleeve interference fit.
8. subframe fatigue test moment of flexure as claimed in claim 7 and torque cancellation element, it is characterised in that:
The axle sleeve is graphite copper sheathing.
9. subframe fatigue test moment of flexure and torque cancellation element as described in claim 5 any one, it is characterised in that:
It further include graduated scale (20), the graduated scale (20) is vertically on the side of support frame (12).
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 CN107478442A (en) | 2017-12-15 |
| CN107478442B true CN107478442B (en) | 2019-05-10 |
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| 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 |
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| CN (1) | CN107478442B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN115575114B (en) * | 2022-12-09 | 2023-03-17 | 溧阳市新力机械铸造有限公司 | Strength detection device of motor shaft casting |
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 |
-
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 |
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| Publication number | Publication date |
|---|---|
| CN107478442A (en) | 2017-12-15 |
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Granted publication date: 20190510 Termination date: 20210814 |