CN110806312A - Clamp, device and method for automobile steering column crushing performance test - Google Patents
Clamp, device and method for automobile steering column crushing performance test Download PDFInfo
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- CN110806312A CN110806312A CN201911148178.XA CN201911148178A CN110806312A CN 110806312 A CN110806312 A CN 110806312A CN 201911148178 A CN201911148178 A CN 201911148178A CN 110806312 A CN110806312 A CN 110806312A
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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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- 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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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Abstract
The invention discloses a clamp, a device and a method for an automobile steering column crushing performance test. The first fixing support and the second fixing support are both L-shaped; the upper part and the lower part of the inner side of the fixed support are respectively provided with an upper end fixed hole and a lower end fixed hole, and an upper end fixed plate and a lower end fixed plate are respectively arranged at the positions of the upper end fixed hole and the lower end fixed hole. The test device comprises a stretcher base, wherein a working table top and a clamp are sequentially arranged on the stretcher base, and an automobile steering column to be tested is fixed through the clamp; and during testing, applying pressure to the automobile steering column to be tested through the pressure head. The test fixture, the test device and the test method can meet the crushing performance test requirements of most automobile steering columns with different sizes and geometric shapes.
Description
Technical Field
The invention belongs to the technical field of automobile safety and test tests, and particularly relates to a clamp, a device and a method for an automobile steering column crushing performance test.
Background
The automobile steering column is an important component of an automobile steering system, and the crushing performance of the automobile steering column is an important technical index for measuring the quality of the automobile steering column. With the continuous development of automobile electronic technology and automobile safety technology, the functions of automobile steering columns are also continuously increased. For example, electronic power steering systems have emerged in order to accomplish steering with less effort by the driver; in addition, in order to increase the living space and energy absorption space of the passengers during the collision, a collapsible energy-absorbing steering column is presented. The two functions improve the performance of the steering column in different fields, so that the steering column has more powerful functions. However, due to the presence of the electronic steering system, the size of the bottom of the steering system is increased, and the conventional steering column test fixture cannot meet the requirements of the steering column test with the electronic steering system.
Disclosure of Invention
The invention aims to provide a clamp, a device and a method for an automobile steering column crushing performance test, and the test clamp, the device and the method can meet the requirements of the novel automobile steering column crushing performance test and improve the level of the automobile steering column crushing performance test.
In order to realize the purpose, the invention adopts the following technical scheme:
a clamp for an automobile steering column crushing performance test comprises a first fixing support and a second fixing support which are arranged in a mirror surface mode, wherein the first fixing support and the second fixing support are both L-shaped; a first upper end fixing hole and a first lower end fixing hole are respectively formed in the upper portion and the lower portion of the inner side of the first fixing support, and a first upper end fixing plate and a first lower end fixing plate are respectively mounted at the positions of the first upper end fixing hole and the first lower end fixing hole; and a second upper end fixing hole and a second lower end fixing hole are respectively formed in the upper part and the lower part of the inner side of the second fixing support, and a second upper end fixing plate and a second lower end fixing plate are respectively installed at the positions of the second upper end fixing hole and the second lower end fixing hole.
Furthermore, the first upper end fixing hole, the first lower end fixing hole, the second upper end fixing hole and the second lower end fixing hole are all elongated holes.
Furthermore, the first upper end fixing hole and the second upper end fixing hole are both arranged longitudinally, and the first lower end fixing hole and the second lower end fixing hole are both arranged transversely. The arrangement can facilitate the position adjustment of the upper end fixing plate in the longitudinal direction and the position adjustment of the lower end fixing plate in the transverse direction.
Still further, the number of the first upper end fixing holes, the number of the first lower end fixing holes, the number of the second upper end fixing holes and the number of the second lower end fixing holes are one or more. When the upper end fixing plate and the lower end fixing plate are installed, one corresponding upper end fixing hole and one corresponding lower end fixing hole are selected according to test requirements.
Furthermore, reinforcing ribs are arranged on the outer sides of the first fixing support and the second fixing support.
A test device using the clamp comprises a stretcher base, wherein a working table top and the clamp are sequentially arranged on the stretcher base, and an automobile steering column to be tested is fixed through the clamp; and during testing, applying pressure to the automobile steering column to be tested through the pressure head.
Further, the automobile steering column to be tested is connected with the clamp through a fixing bolt and a fixing pin; the fixing bolt is used for connecting the automobile steering column to be tested with the first upper end fixing plate and the second upper end fixing plate respectively, and the fixing pin is used for connecting the automobile steering column to be tested with the first lower end fixing plate and the second lower end fixing plate respectively.
The test method using the test device comprises the following steps:
1) fixing a first fixing support on a working table surface of a tensile testing machine; placing the second fixing bracket on a working table of the tensile testing machine, but not fixing the second fixing bracket temporarily;
2) fixing a first lower end fixing plate on a first fixing support, and fixing a second lower end fixing plate on a second fixing support;
3) placing the automobile steering column to be tested on a testing device: firstly, fixing the lower end of an automobile steering column to be tested with a first lower end fixing plate and a second lower end fixing plate by using fixing pins respectively;
4) vertically placing an automobile steering column to be tested, and fixing a first upper end fixing plate on a first fixing support according to the position of a first resin pin of the automobile steering column to be tested; selecting a certain first upper end fixing hole according to the requirement, and selecting a proper position in the long hole for fixing;
5) fixing a second upper end fixing plate on a second fixing support according to the position of a second resin pin of the automobile steering column to be tested, appropriately moving the position of the second fixing support on the working table surface of the tensile testing machine according to the requirement, and then fixing the second fixing support on the working table surface of the tensile testing machine;
6) connecting a first resin pin of the automobile steering column to be tested with a first upper end fixing plate by using a fixing bolt, and connecting a second resin pin of the automobile steering column to be tested with a second upper end fixing plate by using a fixing bolt;
7) starting the tensile machine testing machine, and moving a pressure head of the tensile machine testing machine to enable the pressure head to be close to the top end of the automobile steering column to be tested; and then starting loading, and recording a force-displacement curve in the test of the automobile steering column to be tested in the loading process to obtain a crushing performance curve of the automobile steering column to be tested.
According to the clamp, the device and the method for the automobile steering column crushing performance test, the first fixing support and the second fixing support of the clamp are separated, so that the distance between the first fixing support and the second fixing support can be adjusted according to the size of an automobile steering column, and the problem that the bottom of the automobile steering column with an electronic steering power-assisted system is large in size is solved; however, the rigidity of the fixing bracket is insufficient due to the separation of the first fixing bracket and the second fixing bracket, and therefore reinforcing ribs are added to the first fixing bracket and the second fixing bracket. Compare with current car steering column conquassation test device and anchor clamps, main advantage is as follows:
(1) the steering column can be suitable for any automobile steering column with larger bottom size, and is particularly suitable for a steering column with an electronic steering power-assisted system.
(2) Has a larger adjusting range in the height direction
Because the upper end fixing holes are all long holes, the first upper end fixing plate can be adjusted up and down after being fixed on the first fixing support, so that the automobile steering columns with different sizes can be conveniently fixed; in addition, the heights of the upper end fixing holes are different, and the adjusting range of the first upper end fixing plate is further enlarged. The adjusting mode of the second upper end fixing plate and the second fixing bracket is similar to that of the first fixing bracket.
(3) With a greater adjustment range in the transverse direction
Because the lower end fixed orifices are all rectangular holes, the first lower end fixed plate can be transversely (leftwards and rightwards) adjusted after being fixed on the first fixed support, and automobile steering columns with different sizes can be conveniently fixed.
(4) Has wider adjusting range in the height direction
In addition, the height difference of a plurality of lower extreme fixed orificess through with the cooperation of upper end fixed orifices, has further increased test fixture's altitude mixture control scope, makes the application range of anchor clamps wider.
(5) Steering column suitable for different sizes and geometric shapes
Through the point combination of the points 2, 3 and 4, the crushing performance test requirements of most automobile steering columns with different sizes and geometric shapes can be met.
Drawings
FIG. 1 is a schematic diagram of a test fixture configuration in one embodiment of the present invention;
FIG. 2 is a front view of a left side stationary bracket according to one embodiment of the present invention;
FIG. 3 is a left side view of the left side mounting bracket shown in FIG. 2;
FIG. 4 is a schematic structural diagram of a testing apparatus according to an embodiment of the present invention.
Detailed Description
The following describes in detail a clamp, a device and a method for an automobile steering column collapse performance test according to the present invention with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper", "lower", "bottom", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
As shown in fig. 1, the clamp for the crush performance test of the automobile steering column comprises six parts, namely a left fixing support 01, a right fixing support 02, a left upper end fixing plate 03, a right upper end fixing plate 04, a left lower end fixing plate 05 and a right lower end fixing plate 06.
As shown in fig. 2 and 3, the main body of the left fixing bracket 01 is an L-shaped steel plate 0101, and the steel plate 0101 is further provided with a reinforcing rib 0107. In addition, the steel plate 0101 is provided with a plurality of holes, including upper end fixing holes 0102 and 0103 and lower end fixing holes 0104, 0105 and 0106. It should be noted that, the number of the upper end fixing holes and the lower end fixing holes may be set according to actual needs, and is not limited by this embodiment. Wherein, the upper end fixing holes 0102 and 0103 are used for fixing the left upper end fixing plate 03, and one fixing hole (0102 or 0103) is selected as required; the lower end fixing holes 0104, 0105 and 0106 are used for fixing the left lower end fixing plate 05, and one of the fixing holes (0104, 0105 or 0106) is selected as required.
The right side fixed bolster 02 is symmetrical with the left side fixed bolster 01, and its main part is the steel sheet of an L shape also, has a strengthening rib on the steel sheet. In addition, the steel plate is provided with a plurality of holes, including an upper end fixing hole and a lower end fixing hole. The upper end fixing holes are used for fixing the right upper end fixing plate 04, and one fixing hole can be selected according to needs; the lower end fixing hole is used for fixing the right lower end fixing plate 06, and only one of the fixing holes is selected as required.
The upper end fixing holes 0102 and 0103 are both long holes, so that the left upper end fixing plate 03 can be adjusted up and down after being fixed on the left fixing bracket 01; the right upper end fixing plate 04 and the right fixing bracket 02 are adjusted in a manner similar to the left.
The lower end fixing holes 0104, 0105 and 0106 are all long holes, so that the left lower end fixing plate 05 can be adjusted left and right after being fixed on the left fixing bracket 01; in addition, the lower end fixing holes 0104, 0105 and 0106 are different in height, so that height adjustment is possible.
A test device using the clamp comprises a stretcher base 20, wherein a working table top 10 and a clamp 00 are sequentially arranged on the stretcher base, and an automobile steering column 60 to be tested is fixed through the clamp 00; during testing, pressure is applied to the automobile steering column to be tested through the pressure head 50.
The automobile steering column 60 to be tested is connected with the clamp 00 through the fixing bolt 40 and the fixing pin 30. The fixing bolt 40 is used for connecting the automobile steering column 60 to be tested with the left fixing plate and the right upper end fixing plate respectively, and the fixing pin 30 is used for connecting the automobile steering column 60 to be tested with the left fixing plate and the right lower end fixing plate.
The method for testing the crushing performance of the automobile steering column by using the testing device comprises the following steps:
1) the left fixing bracket 01 is fixed on the table top 10 of the tensile testing machine, and the right fixing bracket 02 is placed on the table top 10 of the tensile testing machine, but is not fixed temporarily.
2) The left lower end fixing plate 05 is fixed to the left fixing bracket 01, and can be temporarily fixed to the 0105 elongated hole. The right lower end fixing plate 06 is fixed to the right fixing bracket 02, and may be temporarily fixed to the elongated hole in the middle of the lower end.
3) And placing a test sample piece of the automobile steering column to be tested on the test device. Firstly, the lower end of the automobile steering column is fixed with a left lower end fixing plate 05 and a right lower end fixing plate 06 by a fixing pin 30.
4) Vertically placing an automobile steering column to be tested, fixing a left upper end fixing plate 03 on a left fixing support 01 according to the position of a left resin pin of the automobile steering column to be tested, selecting 0102 or 0103 upper end fixing holes as required, and selecting a proper position in a long hole for fixing;
5) similarly, the right upper end fixing plate 04 is fixed to the right fixing bracket 02 according to the position of the resin pin on the right side of the steering column 60 of the automobile, and the position of the right fixing bracket 02 on the tensile testing machine table 10 is appropriately moved as necessary and then fixed to the tensile testing machine table 10.
6) The left resin pin of the automobile steering column 60 is connected with the left upper end fixing plate 03 through the fixing bolt 40, and the right resin pin of the automobile steering column 60 is connected with the right upper end fixing plate 04 through the fixing bolt 40.
7) The stretcher tester is started and the ram 50 of the stretcher is moved closer to the top end of the automotive steering column 60. And starting loading, and recording a force-displacement curve in the test of the automobile steering column 60 in the loading process to obtain a crushing performance curve of the steering column.
Based upon the foregoing description of the preferred embodiment of the invention, it should be apparent that the invention defined by the appended claims is not limited solely to the specific details set forth in the foregoing description, as many apparent variations thereof are possible without departing from the spirit or scope thereof.
Claims (8)
1. The clamp for the crushing performance test of the automobile steering column is characterized by comprising a first fixing support and a second fixing support which are arranged in a mirror surface mode, wherein the first fixing support and the second fixing support are L-shaped; a first upper end fixing hole and a first lower end fixing hole are respectively formed in the upper portion and the lower portion of the inner side of the first fixing support, and a first upper end fixing plate and a first lower end fixing plate are respectively mounted at the positions of the first upper end fixing hole and the first lower end fixing hole; and a second upper end fixing hole and a second lower end fixing hole are respectively formed in the upper part and the lower part of the inner side of the second fixing support, and a second upper end fixing plate and a second lower end fixing plate are respectively installed at the positions of the second upper end fixing hole and the second lower end fixing hole.
2. The clamp for the crush performance test of the steering column of the automobile according to claim 1, wherein the first upper end fixing hole, the first lower end fixing hole, the second upper end fixing hole and the second lower end fixing hole are all elongated holes.
3. The clamp for the crush performance test of the steering column of the automobile according to claim 2, wherein the first upper end fixing hole and the second upper end fixing hole are longitudinally arranged, and the first lower end fixing hole and the second lower end fixing hole are transversely arranged.
4. The clamp for the crush performance test of the steering column of the automobile according to claim 3, wherein the number of the first upper end fixing holes, the first lower end fixing holes, the second upper end fixing holes and the second lower end fixing holes is one or more.
5. The clamp for the crush performance test of the steering column of the automobile according to any one of claims 1 to 4, wherein reinforcing ribs are arranged on the outer sides of the first fixing bracket and the second fixing bracket.
6. A test device using the clamp of claim 5 comprises a stretcher base, wherein a worktable surface and the clamp are sequentially arranged on the stretcher base, and an automobile steering column to be tested is fixed through the clamp; and during testing, applying pressure to the automobile steering column to be tested through the pressure head.
7. The test device according to claim 6, comprising a stretcher base, wherein the automobile steering column to be tested is connected with the clamp through a fixing bolt and a fixing pin; the fixing bolt is used for connecting the automobile steering column to be tested with the first upper end fixing plate and the second upper end fixing plate respectively, and the fixing pin is used for connecting the automobile steering column to be tested with the first lower end fixing plate and the second lower end fixing plate respectively.
8. A test method using the test device according to claim 6, comprising the steps of:
1) fixing a first fixing support on a working table surface of a tensile testing machine; placing the second fixing bracket on a working table of the tensile testing machine, but not fixing the second fixing bracket temporarily;
2) fixing a first lower end fixing plate on a first fixing support, and fixing a second lower end fixing plate on a second fixing support;
3) placing the automobile steering column to be tested on a testing device: firstly, fixing the lower end of an automobile steering column to be tested with a first lower end fixing plate and a second lower end fixing plate by using fixing pins respectively;
4) vertically placing an automobile steering column to be tested, and fixing a first upper end fixing plate on a first fixing support according to the position of a first resin pin of the automobile steering column to be tested; selecting a certain first upper end fixing hole according to the requirement, and selecting a proper position in the long hole for fixing;
5) fixing a second upper end fixing plate on a second fixing support according to the position of a second resin pin of the automobile steering column to be tested, appropriately moving the position of the second fixing support on the working table surface of the tensile testing machine according to the requirement, and then fixing the second fixing support on the working table surface of the tensile testing machine;
6) connecting a first resin pin of the automobile steering column to be tested with a first upper end fixing plate by using a fixing bolt, and connecting a second resin pin of the automobile steering column to be tested with a second upper end fixing plate by using a fixing bolt;
7) starting the tensile machine testing machine, and moving a pressure head of the tensile machine testing machine to enable the pressure head to be close to the top end of the automobile steering column to be tested; and then starting loading, and recording a force-displacement curve in the test of the automobile steering column to be tested in the loading process to obtain a crushing performance curve of the automobile steering column to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148178.XA CN110806312A (en) | 2019-11-21 | 2019-11-21 | Clamp, device and method for automobile steering column crushing performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148178.XA CN110806312A (en) | 2019-11-21 | 2019-11-21 | Clamp, device and method for automobile steering column crushing performance test |
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| Publication Number | Publication Date |
|---|---|
| CN110806312A true CN110806312A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911148178.XA Pending CN110806312A (en) | 2019-11-21 | 2019-11-21 | Clamp, device and method for automobile steering column crushing performance test |
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| CN (1) | CN110806312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337238A (en) * | 2020-04-10 | 2020-06-26 | 东风汽车集团有限公司 | Device and method for verifying dynamic collapse performance of steering column |
-
2019
- 2019-11-21 CN CN201911148178.XA patent/CN110806312A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337238A (en) * | 2020-04-10 | 2020-06-26 | 东风汽车集团有限公司 | Device and method for verifying dynamic collapse performance of steering column |
| CN111337238B (en) * | 2020-04-10 | 2021-03-19 | 东风汽车集团有限公司 | Device and method for verifying dynamic collapse performance of steering column |
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Effective date of registration: 20220614 Address after: Room 805, building 4, phase I, Jingang scientific innovation park, No. 1, Kechuang Road, Yaohua street, Qixia District, Nanjing, Jiangsu 210000 Applicant after: NANJING WAYTHINK AUTOMOBILE TECHNOLOGY CO.,LTD. Address before: 210046 Room 101, building 2, Jingang scientific innovation park, No. 1, Kechuang Road, Yaohua street, Qixia District, Nanjing City, Jiangsu Province Applicant before: Nanjing visco Auto Parts Co.,Ltd. |
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