CN110672429A - Steel rail static bending test device and monitoring system - Google Patents
Steel rail static bending test device and monitoring system Download PDFInfo
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- CN110672429A CN110672429A CN201911022535.8A CN201911022535A CN110672429A CN 110672429 A CN110672429 A CN 110672429A CN 201911022535 A CN201911022535 A CN 201911022535A CN 110672429 A CN110672429 A CN 110672429A
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of steel rail testing, and discloses a steel rail static bending testing device and a monitoring system. The steel rail static bending test device comprises a base, wherein two supporting tables for placing steel rails to be tested are arranged on the base at intervals, 4 supporting columns are arranged on the peripheries of the two supporting tables, a bearing plate is fixedly arranged at the tops of the supporting columns, a hydraulic device is arranged in the middle of the bottom surface of the bearing plate, and a pressure head is arranged at the output end of the hydraulic device; anti-collision buffer structures are arranged on the base between the two support tables, on the bottom surface of the bearing plate and on the surface of each support column; and the bottom surface of the bearing table is provided with a position calibrator for calibrating the steel rail to be tested. The steel rail static bending test device and the monitoring system can effectively prevent the steel rail from causing hard impact on equipment when the steel rail is suddenly broken, and improve the safety performance of the equipment; the position of the steel rail to be tested is calibrated through the position calibrator, and the precision of the static bending test can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of steel rail testing, and particularly relates to a steel rail static bending testing device and a monitoring system.
Background
Railways are the important infrastructure and popular transportation means of the country and are in the backbone status in the comprehensive transportation system. Railway transportation is an important transportation mode for important materials such as energy, minerals and the like. With the continuous development of socioeconomic of China, the railway construction of China also enters a stage of high-speed growth, and the mileage of the high-speed railway of China at present exceeds that of other countries.
In order to improve the comfort of the high-speed railway, the high-speed railway in China all adopts a seamless steel rail technology, when the seamless steel rail is laid, a tractor is used for dragging two steel rails with the length of 500 meters to slide to corresponding positions, and dozens of engineering technicians assist the tractor to dismount the steel rails and accurately position the steel rails. After the rails are laid, the welding construction team of the seamless rails can immediately weld the rails laid in front into a rail without gaps. The seamless steel rail has the advantages of reducing noise pollution; the circuit damage is reduced, and raw materials are saved; the reliability of the track is improved; the stability and the comfort of passengers are improved. In order to ensure that the seamless rail can exert its advantages, the quality of the rail welding joint is the central importance, the welding point must reach certain indexes to be used, and the static bending pressure is the most important index. At present, the structure of the static bending testing machine in the market is not strict and accurate enough, the testing precision is not high, and a protection structure for preventing the steel rail from rebounding when the steel rail is broken does not exist, so that the potential safety hazard exists in the test process.
Disclosure of Invention
In order to solve one or more technical problems in the prior art, the invention provides a steel rail static bending test device and a monitoring system with higher measurement accuracy and safety performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides a steel rail static bending test device which comprises a base, wherein two supporting tables for placing a steel rail to be tested are arranged on the base at intervals, 4 supporting columns are arranged on the peripheries of the two supporting tables, a bearing plate is fixedly arranged at the top of each supporting column, a hydraulic device is arranged in the middle of the bottom surface of the bearing plate, and a pressure head is arranged at the output end of the hydraulic device; anti-collision buffer structures are arranged on the base between the two support tables, on the bottom surface of the bearing plate and on the surface of each support column; and the bottom surface of the bearing table is provided with a position calibrator for calibrating the steel rail to be tested.
Further, base, brace table, support column and loading board all adopt the cast iron preparation to form.
Furthermore, the top surface of the bearing plate is provided with a reinforcing rib.
Furthermore, the support column is detachably connected with the base and the bearing plate respectively.
Furthermore, threaded connectors are respectively arranged at two ends of the supporting column, step-shaped plug holes are respectively arranged at positions on the base and the bearing plate, which are connected with the supporting column, and two ends of the supporting column are respectively inserted into the corresponding plug holes and are respectively fixedly connected with the base and the bearing plate through nuts.
Furthermore, the anti-collision buffer structure between the two support tables comprises a first buffer plate, and the first buffer plate is connected with the base through a plurality of first buffer springs; the anti-collision buffer structure on the bottom surface of the bearing plate comprises two second buffer plates arranged on two sides of the hydraulic device, and each second buffer plate is connected with the bottom surface of the bearing plate through a second buffer spring; the surface of support column anticollision buffer structure include along the polylith arc that the support column circumference set up, every the arc all through third buffer spring with support column fixed connection.
Furthermore, the position calibrator is a plane infrared emission device symmetrically arranged on two sides of the bottom surface of the bearing platform.
Furthermore, the base is provided with pulley blocks on two sides of the supporting platforms, which are back to each other, and each pulley block comprises at least two pulleys arranged side by side.
On the other hand, the invention also provides a steel rail static bending test monitoring system for the steel rail static bending test device, which comprises the following components:
the pressure sensor is used for detecting static bending pressure data borne by the steel rail to be detected;
the displacement sensor is used for detecting the displacement data of the steel rail to be detected in the vertical direction;
the data acquisition unit is respectively connected with the pressure sensor and the displacement sensor and is used for acquiring the static bending pressure data and the displacement data in real time;
the data analysis unit is connected with the data acquisition unit and is used for analyzing the acquired static bending pressure data and the displacement data to obtain an analysis result;
and the data display unit is connected with the data analysis unit and is used for displaying the analysis result.
Further, the data display unit displays the analysis result in the form of a graph.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects or advantages:
according to the steel rail static bending test device and the monitoring system, the anti-collision buffer structures are arranged on the base between the two support tables, on the bottom surface of the bearing plate and on the surface of each support column, so that hard impact on equipment caused by sudden breakage of a steel rail can be effectively prevented, and the safety performance of the equipment is improved; when the steel rail to be tested is placed, the position of the steel rail to be tested is calibrated through the position calibrator, and the precision of a static bending test can be effectively improved.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a steel rail static bending test device provided by an embodiment of the invention;
FIG. 2 is a side view of a steel rail static bending test device provided by an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a support post according to an embodiment of the present invention;
fig. 4 is a structural block diagram of a steel rail static bending monitoring system provided in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or the element which is indicated must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. For those skilled in the art, the drawings of the embodiments with specific meanings of the terms in the present invention can be understood in specific situations, and the technical solutions in the embodiments of the present invention are clearly and completely described. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-3, an embodiment of the present invention provides a steel rail static bending test apparatus, which includes a base 1, two support tables 2 for placing a steel rail to be tested are arranged on the base 1 at intervals, 4 support columns 3 are arranged around the two support tables 2, a bearing plate 4 is fixedly mounted on the top of each support column 3, a hydraulic device 5 is arranged in the middle of the bottom surface of the bearing plate 4, and a pressure head 6 is arranged at the output end of the hydraulic device 5; the base 1 is arranged between the two supporting tables 2, the bottom surface of the bearing plate 4 and the surface of each supporting column 3 are respectively provided with an anti-collision buffer structure; the bottom surface of the bearing table 4 is provided with a position calibrator for calibrating the steel rail to be measured.
When the steel rail static bending test device provided by the embodiment of the invention is used, firstly, a steel rail to be tested is placed on the two support tables 2, and then the position of the steel rail to be tested is calibrated by using the position calibrator; and after the position is calibrated, starting the hydraulic device 5 and carrying out static bending test on the steel rail to be tested.
In the concrete implementation process, the high-speed rail is a 60-type rail with the mass of 60kg/m, which is usually adopted as the rail with large mass. Therefore, in order to better bear the rail to be tested, in a further embodiment, the base 1, the support table 2, the support column 3 and the bearing plate 4 in the embodiment of the present invention are all made of cast iron.
In the specific implementation process, the bearing plate bears the self weight of the hydraulic device when not in work and bears the reaction force of the steel rail when in work, so that in order to further improve the bearing capacity of the bearing plate, the top surface of the bearing plate 4 is further provided with the reinforcing ribs for enhancing the bearing capacity of the bearing plate 4.
In a specific implementation process, in order to facilitate maintenance of the steel rail static bending test device, in a further embodiment, the supporting columns 3 in the embodiment of the present invention are detachably connected to the base 1 and the bearing plate 4, respectively. Specifically, in the embodiment of the present invention, two ends of the supporting column 3 are respectively provided with a threaded connector, stepped jacks are respectively provided at positions on the base 1 and the bearing plate 4, which are connected to the supporting column 3, and two ends of the supporting column 3 are respectively inserted into the corresponding jacks and are respectively fixedly connected to the base 1 and the bearing plate 4 through nuts.
In a further embodiment, the crash cushion structure between two support platforms 2 in the embodiment of the present invention includes a first cushion plate 21, and the first cushion plate 21 is connected to the base 1 through a plurality of first cushion springs 22; the anti-collision buffer structure on the bottom surface of the bearing plate 4 comprises two second buffer plates 41 arranged on two sides of the hydraulic device 5, and each second buffer plate 41 is connected with the bottom surface of the bearing plate 4 through a second buffer spring 42; the crashproof buffer structure on the surface of support column 3 includes the polylith arc 31 that sets up along support column 3 circumference, and every arc 31 all is through third buffer spring 32 and support column 3 fixed connection. The anti-collision buffer structure has the advantages of simple structure, low manufacturing cost and low maintenance cost.
In a specific implementation process, the position calibrator is of various types, and in a further implementation, the position calibrator in the embodiment of the invention is specifically a planar infrared emitting device symmetrically arranged on two sides of the bottom surface of the bearing table. When the device is used, two plane infrared ray emitting devices respectively emit plane infrared rays, the plane infrared ray emitting devices project onto the support table 2 to form two infrared rays which are parallel to each other, and the distance between the two infrared rays is the width of the rail bottom of the steel rail to be detected.
In a specific implementation process, because the steel rail to be tested is heavy in mass, in order to facilitate placement and removal of the steel rail to be tested, in a further implementation scheme, pulley blocks 7 are further respectively arranged on one sides, opposite to each other, of the two support tables 2 on the base 1 in the embodiment of the invention, and each pulley block 7 comprises at least two pulleys arranged side by side.
Based on the above-mentioned steel rail static bending test device, an embodiment of the present invention further provides a steel rail static bending test monitoring system for the above-mentioned steel rail static bending test device, as shown in fig. 4, the steel rail static bending test monitoring system includes:
the pressure sensor 101 is used for detecting static bending pressure data borne by the steel rail to be detected;
the displacement sensor 102 is used for detecting displacement data of the steel rail to be detected in the vertical direction;
the data acquisition unit 103 is respectively connected with the pressure sensor 101 and the displacement sensor 102 and is used for acquiring the static bending pressure data and the displacement data in real time;
the data analysis unit 104 is connected with the data acquisition unit 103 and is used for analyzing the acquired static bending pressure data and the acquired displacement data to obtain an analysis result;
and the data display unit 105 is connected with the data analysis unit 104 and is used for displaying the analysis result.
In a particular implementation, in order to enable the tester to view the monitoring data more intuitively, in a further embodiment, the data display unit 104 in the present example displays the analysis results in a graphical form.
According to the steel rail static bending test device and the monitoring system provided by the embodiment of the invention, the anti-collision buffer structures are arranged on the base between the two support tables, on the bottom surface of the bearing plate and on the surface of each support column, so that the hard impact on equipment caused by sudden fracture of a steel rail can be effectively prevented, and the safety performance of the equipment is improved; when the steel rail to be tested is placed, the position of the steel rail to be tested is calibrated through the position calibrator, and the precision of a static bending test can be effectively improved.
Furthermore, the steel rail static bending test device and the monitoring system provided by the embodiment of the invention automatically acquire pressure data and displacement data through the data acquisition unit, so that the accuracy of test data can be further improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A steel rail static bending test device is characterized by comprising a base, wherein two supporting tables for placing a steel rail to be tested are arranged on the base at intervals, 4 supporting columns are arranged on the peripheries of the two supporting tables, a bearing plate is fixedly arranged at the tops of the supporting columns, a hydraulic device is arranged in the middle of the bottom surface of the bearing plate, and a pressure head is arranged at the output end of the hydraulic device; anti-collision buffer structures are arranged on the base between the two support tables, on the bottom surface of the bearing plate and on the surface of each support column; and the bottom surface of the bearing table is provided with a position calibrator for calibrating the steel rail to be tested.
2. A steel rail static bending test device according to claim 1, wherein the base, the support platform, the support column and the bearing plate are made of cast iron.
3. A steel rail static bending test device according to claim 1, wherein the top surface of the bearing plate is provided with a reinforcing rib.
4. A rail static bending test apparatus according to claim 1, wherein the support columns are detachably connected to the base and the carrier plate, respectively.
5. A steel rail static bending test device according to claim 4, wherein two ends of the supporting column are respectively provided with a threaded connector, the base and the bearing plate are respectively provided with a step-shaped socket at the position connected with the supporting column, and two ends of the supporting column are respectively inserted into the corresponding sockets and are respectively fixedly connected with the base and the bearing plate through nuts.
6. A steel rail static bending test device according to claim 1, wherein the anti-collision buffer structure between the two support tables comprises a first buffer plate, and the first buffer plate is connected with the base through a plurality of first buffer springs; the anti-collision buffer structure on the bottom surface of the bearing plate comprises two second buffer plates arranged on two sides of the hydraulic device, and each second buffer plate is connected with the bottom surface of the bearing plate through a second buffer spring; the surface of support column anticollision buffer structure include along the polylith arc that the support column circumference set up, every the arc all through third buffer spring with support column fixed connection.
7. A steel rail static bending test device according to claim 1, wherein the position calibrator is a planar infrared emitting device symmetrically arranged on both sides of the bottom surface of the bearing platform.
8. A steel rail static bending test device according to claim 1, wherein the base is further provided with pulley blocks on the side of the two support platforms opposite to each other, and each pulley block comprises not less than two pulleys arranged side by side.
9. A steel rail static bending test monitoring system for a steel rail static bending test device according to any one of claims 1 to 8, which is characterized by comprising:
the pressure sensor is used for detecting static bending pressure data borne by the steel rail to be detected;
the displacement sensor is used for detecting the displacement data of the steel rail to be detected in the vertical direction;
the data acquisition unit is respectively connected with the pressure sensor and the displacement sensor and is used for acquiring the static bending pressure data and the displacement data in real time;
the data analysis unit is connected with the data acquisition unit and is used for analyzing the acquired static bending pressure data and the displacement data to obtain an analysis result;
and the data display unit is connected with the data analysis unit and is used for displaying the analysis result.
10. The system for monitoring the static bending test of the steel rail according to claim 9, wherein the data display unit displays the analysis result in a form of a graph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022535.8A CN110672429A (en) | 2019-10-25 | 2019-10-25 | Steel rail static bending test device and monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022535.8A CN110672429A (en) | 2019-10-25 | 2019-10-25 | Steel rail static bending test device and monitoring system |
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| CN110672429A true CN110672429A (en) | 2020-01-10 |
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| CN201911022535.8A Pending CN110672429A (en) | 2019-10-25 | 2019-10-25 | Steel rail static bending test device and monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959872A (en) * | 2021-09-24 | 2022-01-21 | 安徽润象新材料科技有限公司 | Bending property testing device for PET composite board |
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| KR20120067742A (en) * | 2010-12-16 | 2012-06-26 | 주식회사 포스코 | Bending test device |
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| CN109507050A (en) * | 2019-01-02 | 2019-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Rail joint rail head bias-load-web of the rail fatigue experimental device and test method |
| CN209264255U (en) * | 2018-11-26 | 2019-08-16 | 包头钢铁（集团）有限责任公司 | A kind of rail rolling object fatigue testing machine |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87214474U (en) * | 1987-10-23 | 1988-08-17 | 郑州铁路局郑州科学技术研究所 | Steel rail static bending testing machine |
| KR20120067742A (en) * | 2010-12-16 | 2012-06-26 | 주식회사 포스코 | Bending test device |
| CN202186681U (en) * | 2011-06-30 | 2012-04-11 | 天水红山试验机有限公司 | Test sample conveyer of steel rail static bending tester |
| CN103302150A (en) * | 2012-03-13 | 2013-09-18 | 上海工程技术大学 | Measurement and control system for steel rail static bending machine |
| CN204203008U (en) * | 2014-08-14 | 2015-03-11 | 浙江辰鑫机械设备有限公司 | A kind of steel rail static bending pressure testing machine |
| CN207181178U (en) * | 2017-09-22 | 2018-04-03 | 郑州铁路局科学技术研究所 | The safe breaking device of rail is tested and hindered to a kind of steel rail static bending |
| CN107745284A (en) * | 2017-10-20 | 2018-03-02 | 阜新力达钢铁铸造有限公司 | Machining center mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959872A (en) * | 2021-09-24 | 2022-01-21 | 安徽润象新材料科技有限公司 | Bending property testing device for PET composite board |
| CN113959872B (en) * | 2021-09-24 | 2024-04-12 | 安徽润象新材料科技有限公司 | Bending performance testing device for PET composite board |
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Application publication date: 20200110 |
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