CN203716017U - Dynamic detection instrument of brace stiffness of ballast bed - Google Patents
Dynamic detection instrument of brace stiffness of ballast bed Download PDFInfo
- Publication number
- CN203716017U CN203716017U CN201420070410.9U CN201420070410U CN203716017U CN 203716017 U CN203716017 U CN 203716017U CN 201420070410 U CN201420070410 U CN 201420070410U CN 203716017 U CN203716017 U CN 203716017U
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- China
- Prior art keywords
- sleeper
- bearing plate
- force bearing
- acceleration
- charger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 241001669679 Eleotris Species 0.000 claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 230000001133 acceleration Effects 0.000 claims abstract description 18
- 238000013016 damping Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a dynamic detection instrument of brace stiffness of a ballast bed. The detection instrument comprises a sleeper protecting plate, a force bearing plate, a damping device and a loading device which are sequentially arranged from bottom to top, wherein an acceleration or displacement sensor is arranged between the force bearing plate and the damping device, and the loading device comprises a guide rod; a drop hammer is arranged on the guide rod, and a hook device is arranged at the upper part of the guide rod. In the detection process, fasteners of a detected sleeper are loosened firstly, so that the sleeper is in a free state; secondly, the sleeper protecting plate, the force bearing plate and the loading device are sequentially arranged in the middle of the sleeper from bottom to top; and finally, the drop hammer freely falls to apply a load on the force bearing plate and the sleeper at the lower part for continuously repeated impact, the subsidence amount generated by each impact is measured by the displacement sensor or acceleration sensor, the measured signals are transmitted to a measuring instrument host, the brace stiffness of the ballast bed is automatically calculated by the measuring instrument host, and the results are stored or printed on site. The dynamic detection instrument provided by the utility model has the advantages of convenience in use, simplicity in operation, simplicity and convenience in installation, accuracy and objectivity in data, and high detection efficiency.
Description
Technical field
The utility model relates to a kind of technology that detects railway roadbed vertical stiffness, relates in particular to a kind of railway roadbed support stiffness detection of dynamic instrument.
Background technology
Before Ballast track line clear, reply railway roadbed support stiffness detects.In the prior art, to adopt hydraulic test and corresponding corollary apparatus to complete for the detection of railway roadbed support stiffness, using rail as the counter-force strong point, utilize hydraulic jack to apply lateral pressure to concrete sleeper, by being arranged on the pressure meter on jack and being arranged on the deflection of sleeper under the centimeter check different pressures on adjacent sleeper, thereby calculate railway roadbed support stiffness value.
The weak points such as above-mentioned detection method of the prior art exists that detection speed is slow, complicated operation, testing result error are larger.
Utility model content
The purpose of this utility model is to provide that a kind of detection speed is fast, testing result railway roadbed support stiffness detection of dynamic instrument accurately.
The purpose of this utility model is achieved through the following technical solutions:
Railway roadbed support stiffness detection of dynamic instrument of the present utility model; comprise the sleeper guard shield, force bearing plate, the charger that set gradually from bottom to top; between described force bearing plate and charger, be provided with acceleration or displacement transducer, described acceleration or displacement transducer are connected with tester main frame.
The technical scheme being provided by above-mentioned the utility model can be found out, the railway roadbed support stiffness detection of dynamic instrument that the utility model embodiment provides, owing to comprising the sleeper guard shield, force bearing plate, the charger that set gradually from bottom to top, between described force bearing plate and charger, be provided with acceleration or displacement transducer, acceleration or displacement transducer are connected with tester main frame, when test, unclamp the fastener of tested sleeper, make sleeper in free state; Then lay successively from the bottom to top sleeper guard shield, force bearing plate, charger at sleeper middle part; By charger, force bearing plate and its underpart sleeper are applied to dynamic load afterwards, continuous several times is impacted, each deflection producing that impacts is recorded by displacement transducer or acceleration transducer, record signal and transfer to tester main frame, tester main frame calculates railway roadbed support stiffness automatically, and storage or field print result, detection speed is fast, testing result is accurate.
Brief description of the drawings
The structural representation of the railway roadbed support stiffness detection of dynamic instrument that Fig. 1 provides for the utility model embodiment.
1-tester main frame, 2-hooking device, 3-guide peg, 4-drops hammer, 5-force bearing plate, 6-damping unit, 7-acceleration or displacement transducer, 8-sleeper guard shield, 9-sleeper.
Detailed description of the invention
To be described in further detail the utility model embodiment below.
Railway roadbed support stiffness detection of dynamic instrument of the present utility model, its preferably detailed description of the invention be:
Comprise the sleeper guard shield, force bearing plate, the charger that set gradually from bottom to top, be provided with acceleration or displacement transducer between described force bearing plate and charger, described acceleration or displacement transducer are connected with tester main frame.
Between described force bearing plate and charger, be provided with damping unit, described acceleration or displacement transducer are located between described force bearing plate and damping unit or are located at the inside of described damping unit.
Described charger is put and is comprised guide peg, and described guide peg is provided with and drops hammer, and the top of described guide peg is provided with hooking device, described in the top of dropping hammer be provided with the hanging platform corresponding with described hooking device.
Railway roadbed support stiffness detection of dynamic instrument of the present utility model is realized the method for railway roadbed support stiffness detection of dynamic, comprises step:
First, unclamp the fastener of tested sleeper, make sleeper in free state;
Then, lay successively from the bottom to top sleeper guard shield, force bearing plate, charger at sleeper middle part;
Afterwards, by charger, force bearing plate and its underpart sleeper are applied to dynamic load, continuous several times is impacted, each deflection producing that impacts is recorded by described displacement transducer or acceleration transducer, record signal and transfer to tester main frame, tester main frame calculates railway roadbed support stiffness automatically, and storage or field print result.
Described charger applies dynamic load by the free-falling of dropping hammer to force bearing plate and its underpart sleeper.
Specific embodiment:
As shown in Figure 1, railway roadbed support stiffness dynamic measuring instrument comprises sleeper guard shield, force bearing plate, charger and tester main frame.
Sleeper guard shield is buckled in sleeper top while use, with sleeper laminating, increase sleeper lifting surface area while impact, prevents impact failure concrete sleeper.
Force bearing plate is placed in sleeper guard shield top, is the bogey of directly accepting impact, and acceleration or displacement transducer are equipped with in its top, the shift value producing during for detection of impact.
Charger is placed in force bearing plate top, comprises hooking device, guide peg, drops hammer, damping unit.Hooking device plays the role of positioning, the height of drop fixedly dropping hammer.Guide peg play the guiding role, and controls the falling direction that drops hammer.Damping unit plays cushioning effect.When test, drop hammer and utilize hooking device to tangle after guide peg is promoted to top, then unclamp and link up with the free-falling of dropping hammer, impact force passes to force bearing plate and sleeper by damping unit.
Tester main frame is connected with acceleration transducer or displacement transducer by cable, and automatically calculates to the received signal, processes, stores and show test results.
Railway roadbed support stiffness dynamic testing method key step:
First, unclamp the fastener of tested sleeper, make sleeper in free state.Lay successively from the bottom to top sleeper guard shield, force bearing plate, charger at sleeper middle part.The free-falling of dropping hammer of charger when test, force bearing plate and its underpart sleeper are applied to dynamic load, continuous several times is impacted, each deflection producing that impacts is recorded by displacement transducer or acceleration transducer, record signal by cable transmission to tester main frame, tester main frame will calculate railway roadbed support stiffness automatically, and can store or field print result.
Railway roadbed support stiffness detection of dynamic instrument of the present utility model, has advantages of that instrument is light and handy, easy to use, simple to operate, accurately objective, testing result can automatic printing and storage for simple installation, data; The labour intensity that has reduced testing crew, has improved detection efficiency.Its beneficial effect can be summarized as four aspects:
1. railway roadbed support stiffness detection of dynamic instrument, the dynamic load while adopting dynamic load mode to simulate train operation, railway roadbed being produced, testing result more approaches railway roadbed actual loading situation.
2. railway roadbed support stiffness dynamic measuring instrument, by sleeper dynamic load, detects the moving displacement of sleeper, is applicable to the detection of newly-built and existing drawing lines bed support stiffness.
3. substitute counterforce device, jack and oil pump by dynamic load and load, can facilitate the detection of railway roadbed support stiffness, detection speed does not disturb driving soon.
4. compare detecting instrument and the detection method of traditional railway roadbed support stiffness, the utility model adopts acceleration transducer or displacement transducer, the automatic pick-up transducers data of electronic test equipment, and automatically show, printing test result, and printable dynamic load and moving displacement relation curve, reduce testing crew labour intensity, and improved the accuracy of test.
The above; it is only preferably detailed description of the invention of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. a railway roadbed support stiffness detection of dynamic instrument; it is characterized in that; comprise the sleeper guard shield, force bearing plate, the charger that set gradually from bottom to top; between described force bearing plate and charger, be provided with acceleration or displacement transducer, described acceleration or displacement transducer are connected with tester main frame.
2. railway roadbed support stiffness detection of dynamic instrument according to claim 1, it is characterized in that, between described force bearing plate and charger, be provided with damping unit, described acceleration or displacement transducer are located between described force bearing plate and damping unit or are located at the inside of described damping unit.
3. railway roadbed support stiffness detection of dynamic instrument according to claim 2, it is characterized in that, described charger is put and is comprised guide peg, and described guide peg is provided with and drops hammer, the top of described guide peg is provided with hooking device, described in the top of dropping hammer be provided with the hanging platform corresponding with described hooking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070410.9U CN203716017U (en) | 2014-02-18 | 2014-02-18 | Dynamic detection instrument of brace stiffness of ballast bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070410.9U CN203716017U (en) | 2014-02-18 | 2014-02-18 | Dynamic detection instrument of brace stiffness of ballast bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716017U true CN203716017U (en) | 2014-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420070410.9U Expired - Lifetime CN203716017U (en) | 2014-02-18 | 2014-02-18 | Dynamic detection instrument of brace stiffness of ballast bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774512A (en) * | 2014-02-18 | 2014-05-07 | 中铁第五勘察设计院集团有限公司 | Dynamic ballast bed support rigidity detection instrument and detection method |
| CN109883629A (en) * | 2019-02-28 | 2019-06-14 | 天津大学 | A kind of measuring device and method of measurement different size lower margin bearing three-way rigidity |
-
2014
- 2014-02-18 CN CN201420070410.9U patent/CN203716017U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774512A (en) * | 2014-02-18 | 2014-05-07 | 中铁第五勘察设计院集团有限公司 | Dynamic ballast bed support rigidity detection instrument and detection method |
| CN109883629A (en) * | 2019-02-28 | 2019-06-14 | 天津大学 | A kind of measuring device and method of measurement different size lower margin bearing three-way rigidity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |