CN110823555A - Elastic part fatigue test tool - Google Patents
Elastic part fatigue test tool Download PDFInfo
- Publication number
- CN110823555A CN110823555A CN202010024359.8A CN202010024359A CN110823555A CN 110823555 A CN110823555 A CN 110823555A CN 202010024359 A CN202010024359 A CN 202010024359A CN 110823555 A CN110823555 A CN 110823555A
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- fatigue test
- loading block
- top plate
- loading
- guide rod
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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
Abstract
The invention discloses an elastic part fatigue test tool, which comprises: the device comprises a bottom plate, a top plate, a loading block, a clamping fixture, a guide rod and an acting force providing device; at least one loading block is arranged in the vertical direction, an acting force providing device is connected with the loading block to drive the loading block to vibrate in the vertical direction, a plurality of clamping tools are arranged above and below the loading block, and a clamping station is formed between each clamping tool and the loading block; the guide rod runs through the mould setting, and the bottom of guide rod is provided with the bottom plate, and roof and loading block are located the interval setting in the vertical direction, and wherein, the loading block that is located the below sets up in the below of roof of below. The elastic part fatigue test tool can be used for simultaneously carrying out fatigue test on a plurality of elastic parts.
Description
Technical Field
The invention relates to a pressure test tool, in particular to an elastic part fatigue test tool.
Background
The rail fastener can not only relieve the impact damage of a train to the rail structure, but also ensure the reliable connection between the rail and the sleeper, and plays an important role in ensuring the stability and the reliability of the rail structure. The elastic strip is a key part in a fastener system, and can be elastically deformed to absorb energy generated by vibration of a steel rail and ensure the fastening pressure of the steel rail. If the fastener elastic strip breaks due to fatigue damage, the fastener system loses the function of buckling and pressing the steel rail, which may cause the derailment or overturn of the train and cause great loss of life and property. Therefore, fatigue performance is the most critical performance indicator for the spring.
In order to test the fatigue performance of the elastic strip, the elastic strip needs to be subjected to a fatigue test by using a fatigue tester. At present, the test method of the elastic strip is executed according to TB/T2329-. The known elastic strip fatigue testing machine adopting the displacement control type or electro-hydraulic servo type fatigue testing machine is carried out in a one-way pressing-down force application mode, the testing efficiency is very low, a large amount of testing resources are wasted, when the testing amount is increased, the number of devices can be increased to meet the testing requirements, and finally the cost and personnel are increased.
Disclosure of Invention
The invention aims to provide an elastic part fatigue test tool which can be used for simultaneously carrying out fatigue test on a plurality of elastic parts and overcoming the problem of low test efficiency in the prior art.
In order to achieve the above object, the present invention provides an elastic member fatigue test tool, including: the device comprises a bottom plate, a top plate, a loading block, a clamping fixture, a guide rod and an acting force providing device; at least one loading block is arranged in the vertical direction, the acting force providing device is connected with the loading block to drive the loading block to vibrate in the vertical direction, a plurality of clamping tools are arranged above and below the loading block, and a clamping station is formed between each clamping tool and the loading block; the guide rod runs through the mould, the bottom of guide rod is provided with the bottom plate, roof and loading block are located the interval setting in the vertical direction, wherein, are located the below the loading block sets up in the below of roof.
Preferably, the positions of the clamping tools above and below the loading block correspond to each other in a one-to-one and mirror image mode.
Preferably, the mould, the guide rod, the bottom plate and the top plate are of an integral structure.
Preferably, a first adjusting device is arranged between the loading block and the elastic element to be measured.
Preferably, the first adjusting device is a stepless adjusting device.
Preferably, a force sensor and a displacement sensor are arranged on the first adjusting device.
Preferably, a second adjusting device is arranged between the bottom plate and the clamping fixture and between the top plate and the clamping fixture.
Preferably, the second adjusting device is a stepless adjusting device.
Preferably, the guide rod, the bottom plate and the top plate are of an integral structure, and the clamping fixture can be positioned on the guide rod for position adjustment.
Preferably, the acting force providing device is an electro-hydraulic servo testing machine for providing vertical direction vibration acting force.
According to the technical scheme, at least one loading block is arranged in the vertical direction, when needed, a plurality of loading blocks are arranged and matched with a clamping fixture arranged above and below the loading blocks to carry out fatigue testing on more elastic parts, the loading blocks are all connected to an acting force providing device and synchronously vibrate under the driving of the acting force providing device, repeated pressing testing is carried out on the elastic parts arranged on a clamping station in the process of up-and-down vibration of the loading blocks, the loading blocks can be round or circular, in order to improve the motion stability and the guiding effect of the loading blocks, a guide rod can penetrate through the loading blocks after penetrating through the clamping fixture, so that the loading blocks can slide on the guide rod, each position of the loading blocks can provide more stable acting force, and in order to ensure that the acting force is more stable, the effort provides a plurality of positions that the action point of device can be used in loading piece circumferential direction, sets up the aim at of bottom plate and at least one roof, improves the stability of guide bar, on the stable basis of guide bar, can be so that more stable of loading piece direction, and then the more accuracy of the data that tests. Compare in the test of using traditional mode to the elastic component, this elastic component fatigue test frock efficiency of software testing is higher, in addition, because the elastic component homoenergetic that lies in its upper and lower place when the loading piece shakes from top to bottom can be tested, also is higher to the utilization ratio of power.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a preferred embodiment of an elastic member fatigue test tool;
FIG. 2 is a partial schematic view of a preferred embodiment of a fatigue test tooling for an elastomeric article.
Description of the reference numerals
1 loading block and 2 mould
3 guide rod 4 bottom plate
5 first adjusting device of top plate 6
7 second adjusting means 8.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, directional words included in terms such as "upper, lower, left, right, front, rear, inner, and outer" and the like merely represent the directions of the terms in a normal use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.
The elastic member takes an elastic strip 8 as an example, and referring to the elastic member fatigue test tool equipped with the elastic strip 8 shown in fig. 1-2, the elastic member fatigue test tool comprises: the device comprises a bottom plate 4, a top plate 5, a loading block 1, a mould 2, a guide rod 3 and an acting force providing device; at least one loading block 1 is arranged in the vertical direction, the acting force providing device is connected with the loading block 1 to drive the loading block 1 to vibrate in the vertical direction, a plurality of clamping tools 2 are arranged above and below the loading block 1, and a clamping station is formed between each clamping tool 2 and the loading block 1; the guide rod 3 penetrates through the mould 2, a bottom plate 4 is arranged at the bottom end of the guide rod 3, the top plate 5 and the loading block are arranged in the vertical direction at intervals, and the loading block 1 located at the lowest position is arranged below the top plate 5.
Through the implementation of the technical scheme, at least one loading block 1 is arranged in the vertical direction, when needed, a plurality of loading blocks 1 are arranged and matched with a clamping fixture 2 arranged above and below the loading block 1 to perform fatigue test on more elastic strips, the loading blocks 1 are all connected to an acting force providing device and synchronously vibrate under the driving of the acting force providing device, repeated pressing test is performed on the elastic strips arranged on a clamping station in the process of up-and-down vibration of the loading blocks 1, wherein the loading blocks 1 can be circular or circular, in order to improve the motion stability and the guiding effect of the loading blocks 1, a guide rod 3 can penetrate through the loading blocks 1 after penetrating through the clamping fixture 2, so that the loading blocks 1 can slide on a guide rod 3, more stable acting force can be provided at each position of the loading blocks 1, and in order to make the acting force application more stable, the effort provides a plurality of positions that the action point of device can be used in 1 circumferencial direction of loading piece, sets up the aim at of bottom plate 4 and at least one roof 5, improves the stability of guide bar 3, on the stable basis of guide bar 3, can be so that more stable of 1 direction of loading piece, and then the accuracy that the data tested is more. Compare in the test of using traditional mode to bullet strip 8, this elastic component fatigue test frock efficiency of software testing is higher, in addition, because the bullet strip 8 homoenergetic that lies in its upper and lower place when the loading piece 1 shakes from top to bottom can be tested, and the utilization ratio to the power is also higher.
In order to balance the stress of the clamping fixture 2 above and below the loading block 1 and improve the overall stability, the clamping fixture 2 above and below the loading block 1 is preferably arranged in a one-to-one correspondence and in a mirror image manner by improving the overall stability to obtain a better test effect.
In order to obtain better stability effect when fatigue test is carried out on the elastic strip 8 of a specific model, the clamping fixture 2, the guide rod 3, the bottom plate 4 and the top plate 5 are preferably of an integral structure. Since the specific type of elastic strip 8 is fixed in size, the clamping fixture 2, the guide rod 3, the bottom plate 4 and the top plate 5 can be provided as an integral structure to obtain a more stable effect.
In view of the need of carrying out fatigue tests on different types of elastic strips 8, a first adjusting device 6 is preferably arranged between the loading block 1 and the elastic piece to be tested. Can compensate the clearance between bullet strip 8 and the loading piece 1 through first adjusting device 6, and then can carry out fatigue test to the bullet strip 8 of different model sizes.
In order to make the first adjusting device 6 possible to obtain a better distance compensation effect, the first adjusting device 6 is preferably a stepless adjusting device. The stepless adjusting device can be a supporting block structure capable of adjusting the height through a nut or any other structure capable of adjusting the height steplessly.
Of course, in order to better obtain the compression data and the displacement data of the elastic strip 8 for measuring the S-N curve so as to better understand the fatigue resistance performance of the elastic strip 8, it is preferable that the first adjusting device 6 is provided with a force sensor and a displacement sensor.
Furthermore, in addition to the first adjusting device 6, the distance between the spring strip 8 and the loading block 1 can be adjusted by adjusting the distance between the clamping fixture 2 and the bottom plate 4 and/or the top plate 5, and preferably, a second adjusting device 7 is arranged between the bottom plate 4 and the top plate 5 and the clamping fixture 2.
The second adjusting device 7 has the same structure as the first adjusting device 6, and is used for adjusting the height of the support, and in order to obtain a better adjusting effect, the second adjusting device 7 is preferably an infinite adjusting device. The stepless adjusting device can be a supporting block structure capable of adjusting the height through a nut or any other structure capable of adjusting the height steplessly.
Since the position between the spring strip 8 and the loading block 1 needs to be adjusted when fatigue tests are performed on spring strips 8 with different sizes, and the clamping fixture 2 needs to slide on the guide rod 3 when adjusted by the second adjusting device 7, preferably, the guide rod 3, the bottom plate 4 and the top plate 5 are of an integral structure, and the clamping fixture 2 can be positioned on the guide rod 3 for position adjustment. In order to make the mould 2 fix a position more stably, can be located the upper and lower position of mould 2 and set up the helicitic texture on guide bar 3, establish on the helicitic texture through two nut covers, two nuts set up respectively and further stabilize spacing to mould 2 in the upper and lower position of mould 2.
In this embodiment, in order to further provide an acting force providing device, preferably, the acting force providing device is an electro-hydraulic servo testing machine which provides a vertical direction vibration acting force. However, the force providing device is not limited to the electro-hydraulic servo testing machine, and other devices capable of providing up-and-down vibration of the loading block 1 may be used.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The utility model provides an elastic component fatigue test frock, its characterized in that, elastic component fatigue test frock includes: the device comprises a bottom plate (4), a top plate (5), a loading block (1), a mould (2), a guide rod (3) and an acting force providing device;
at least one loading block (1) is arranged in the vertical direction, the acting force providing device is connected with the loading block (1) to drive the loading block (1) to vibrate in the vertical direction, a plurality of clamping tools (2) are arranged above and below the loading block (1), and a clamping station is formed between each clamping tool (2) and the loading block (1);
the guide rod (3) penetrates through the mould (2), a bottom plate (4) is arranged at the bottom end of the guide rod (3), the top plate (5) and the loading block are arranged at intervals in the vertical direction, wherein,
when the number of the top plate (5) and the number of the loading blocks (1) are at least two, the loading block (1) positioned at the lowest part is arranged below the top plate (5) at the lowest part;
when the number of the top plate (5) and the number of the loading blocks (1) are both one, the loading blocks (1) are arranged below the top plate (5).
2. The elastic member fatigue test tool according to claim 1, wherein the positions of the clamping tools (2) above and below the loading block (1) are in one-to-one correspondence and are arranged in a mirror image manner.
3. The elastic member fatigue test tool according to claim 1, wherein the clamping fixture (2), the guide rod (3), the bottom plate (4) and the top plate (5) are of an integral structure.
4. The elastic member fatigue test tool according to claim 1, wherein a first adjusting device (6) is arranged between the loading block (1) and the elastic member to be tested.
5. The elastic member fatigue test tool according to claim 4, wherein the first adjusting device (6) is a stepless adjusting device.
6. The elastic member fatigue test tool according to claim 4, wherein a force sensor and a displacement sensor are arranged on the first adjusting device (6).
7. The tooling for the fatigue test of the elastic piece according to the claim 1, 4, 5 or 6, characterized in that a second adjusting device (7) is arranged between the bottom plate (4) and the top plate (5) and the clamping fixture (2).
8. The elastic member fatigue test tool according to claim 7, wherein the second adjusting device (7) is a stepless adjusting device.
9. The elastic part fatigue test tool according to claim 1, wherein the guide rod (3), the bottom plate (4) and the top plate (5) are of an integral structure, and the clamping fixture (2) is located on the guide rod (3) and can be adjusted in position.
10. The elastic member fatigue test tool according to claim 1, wherein the acting force providing device is an electro-hydraulic servo testing machine providing a vertical direction vibration acting force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010024359.8A CN110823555A (en) | 2020-01-10 | 2020-01-10 | Elastic part fatigue test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010024359.8A CN110823555A (en) | 2020-01-10 | 2020-01-10 | Elastic part fatigue test tool |
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| Publication Number | Publication Date |
|---|---|
| CN110823555A true CN110823555A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010024359.8A Pending CN110823555A (en) | 2020-01-10 | 2020-01-10 | Elastic part fatigue test tool |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6931941B2 (en) * | 2003-09-05 | 2005-08-23 | Nhk International Corp. | Method and apparatus for fatigue testing |
| CN107702900A (en) * | 2017-08-31 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of cylindrical compression spring load test method and system |
| CN207556837U (en) * | 2017-12-26 | 2018-06-29 | 四川广正科技有限公司 | A kind of railway elastic bar fatigue experimental device |
| CN207636420U (en) * | 2017-12-06 | 2018-07-20 | 北京铁科首钢轨道技术股份有限公司 | A kind of tooling of spring fatigue test |
| CN109612710A (en) * | 2018-12-29 | 2019-04-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of railway fastening elastic rod high-cycle fatigue dynamic loading test machine |
| CN208736641U (en) * | 2018-09-17 | 2019-04-12 | 山东联美弹簧科技股份有限公司 | Valve spring fatigue tester |
| CN110018054A (en) * | 2019-03-27 | 2019-07-16 | 北京铁科首钢轨道技术股份有限公司 | A kind of multistation spring fatigue tooling |
-
2020
- 2020-01-10 CN CN202010024359.8A patent/CN110823555A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6931941B2 (en) * | 2003-09-05 | 2005-08-23 | Nhk International Corp. | Method and apparatus for fatigue testing |
| CN107702900A (en) * | 2017-08-31 | 2018-02-16 | 北京精密机电控制设备研究所 | A kind of cylindrical compression spring load test method and system |
| CN207636420U (en) * | 2017-12-06 | 2018-07-20 | 北京铁科首钢轨道技术股份有限公司 | A kind of tooling of spring fatigue test |
| CN207556837U (en) * | 2017-12-26 | 2018-06-29 | 四川广正科技有限公司 | A kind of railway elastic bar fatigue experimental device |
| CN208736641U (en) * | 2018-09-17 | 2019-04-12 | 山东联美弹簧科技股份有限公司 | Valve spring fatigue tester |
| CN109612710A (en) * | 2018-12-29 | 2019-04-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of railway fastening elastic rod high-cycle fatigue dynamic loading test machine |
| CN110018054A (en) * | 2019-03-27 | 2019-07-16 | 北京铁科首钢轨道技术股份有限公司 | A kind of multistation spring fatigue tooling |
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Application publication date: 20200221 |