CN106644010A - Railway vehicle overload and imbalanced load detection system - Google Patents
Railway vehicle overload and imbalanced load detection system Download PDFInfo
- Publication number
- CN106644010A CN106644010A CN201710124668.0A CN201710124668A CN106644010A CN 106644010 A CN106644010 A CN 106644010A CN 201710124668 A CN201710124668 A CN 201710124668A CN 106644010 A CN106644010 A CN 106644010A
- Authority
- CN
- China
- Prior art keywords
- rail
- detection system
- load detection
- substrate
- blind holes
- Prior art date
- 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.)
- Withdrawn
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 241001669679 Eleotris Species 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 30
- 239000011888 foil Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/04—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles
- G01G19/045—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles for weighing railway vehicles in motion
- G01G19/047—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing railway vehicles for weighing railway vehicles in motion using electrical weight-sensitive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/13—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing having piezoelectric or piezoresistive properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a railway vehicle overload and imbalanced load detection system. The railway vehicle overload and imbalanced load detection system comprises a plurality of pressure sensors, an amplifier, a high-speed A/D converter, a collection storage and a data processing chip, wherein the amplifier, the high-speed A/D converter, the collection storage and the data processing chip are connected sequentially, and the pressure sensors connected with the amplifier are arranged on a sleeper, distributed below two steel rails evenly and symmetric with respect to a central axis of the steel rails. Every pressure sensor comprises a rectangular base plate, the opposite front and back end faces of every base plate are provided with coaxially opposite blind holes, resistance strain gages are arranged in the blind holes, and the portions where the blind holes of the base plates are positioned are of H-shaped beam structures. The railway vehicle overload and imbalanced load detection system has the advantages that the pressure sensors are used for collecting weights when train wheels pass through different positions respectively, whether a railway vehicle is in overload and imbalanced load or not can be obtained through transform analysis and processing, and accordingly detection precision is high and detection results are accurate; when the system is used for detecting overload and imbalanced load of cargo vehicles running at a speed below 15 km/h, overall measurement precision is up to 0.9%.
Description
Technical field
The present invention relates to pressure sensing arts, specifically a kind of rail truck ultra-deviation load detection system.
Background technology
Railway is used for the transport of long range, and because its speed is fast, low price has obtained quick development.When train is in
In the state of overload or unbalance loading, vehicle accident is easily caused, cause the loss of life and property.But the overload of vehicle on railway,
The detection of unbalance loading and gross weight, at present or by the way of detection of stopping, detection mode is bothered and fallen behind relatively.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of rail truck ultra-deviation load detection system, for detecting freight
Operation in often save the gross weight of vehicle, it is overweight and lay particular stress on etc. parameter.
The technical scheme is that：
A kind of rail truck ultra-deviation load detection system, includes multiple pressure transducers, amplifier, the high speed being sequentially connected
A/D converter, acquisition memory and data processing chip；Described multiple pressure transducers are connected with amplifier, multiple pressures
Force transducer is arranged on one section of sleeper and mean allocation is in the lower section of two rail and symmetrical along the axis of rail；Described
Pressure transducer includes the substrate of rectangle, and blind hole is provided with the relative front and rear end of substrate, and the blind hole of both ends of the surface is same
Axle is oppositely arranged, and resistance strain gage is provided with blind hole, and part that described substrate blind hole is located is structural I-beam.
Printing equipment is connected with described data processing chip.
Installing plate is connected with below described substrate, substrate is provided with the installing hole of up/down perforation, institute adjacent to both ends
Two blind holes are provided with the relative front and rear end of the substrate stated, two blind holes are located between the installing hole of substrate both ends, front
Two blind holes on end face are coaxially oppositely arranged one by one with two blind holes on rear end face, and part that four blind holes of substrate are located is formed
Two structural I-beams.
Rail locating slot is provided with the upper surface of described substrate, described rail shelf is in rail locating slot and logical
Pressing plate compression is crossed, rail bolt is sequentially passed through and is positioned on sleeper after pressing plate, rail, substrate.
Described resistance strain gage selects two semi-bridge type resistance strain gages, in two semi-bridge type resistance strain gages
Two sheet resistance foil gauges are respectively arranged in coaxial two blind hole, and two two semi-bridge type resistance strain gages connection composition favours
This steps on electric bridge.
Described pressure transducer is eight, and four are provided with below each rail, and symmetrical along the axis of rail.
It is segmenting structure that described lower section is provided with the rail part of pressure transducer and raw steel rail, that is, form rail break.
Advantages of the present invention：
The present invention gathers train wheel by installing multiple pressure transducers between sleeper and rail, respectively through different positions
Weight when putting, and processed by transformational analysis obtain rail truck whether overload or unbalance loading result, accuracy of detection is high, detection
As a result it is accurate.The present invention can carry out Super leaning load detection, overall measurement accuracy to the goods vehicle below speed of service 15km/h
0.9%.
Description of the drawings
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the installation front view of pressure transducer of the present invention.
Fig. 3 is the installation top view of pressure transducer of the present invention.
Fig. 4 is the front view of pressure transducer of the present invention.
Fig. 5 is the top view of pressure transducer of the present invention.
Fig. 6 is the force diagram of pressure transducer of the present invention.
Fig. 7 is the structural representation of structural I-beam of the present invention.
Fig. 8 is the mounting structure figure of resistance strain gage of the present invention.
Fig. 9 is the structural representation of Wheatstone bridge of the present invention.
Figure 10 is the signal imitation figure that pressure transducer of the present invention is collected.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
See Fig. 1-Fig. 3, a kind of rail truck ultra-deviation load detection system includes eight pressure transducers 01, is sequentially connected
Amplifier 02, high-speed a/d converter 03, acquisition memory 04, data processing chip 05 and printing equipment 06；Eight pressure are passed
Sensor 01 is connected with amplifier 02, and multiple pressure transducers 01 are arranged on one section of sleeper 07 and mean allocation is in two rail
Axis of 08 lower section simultaneously along rail 08 is symmetrical, and it is to divide that lower section is provided with the part of rail 08 of pressure transducer 01 and raw steel rail
Structure is cut, that is, forms rail break；The collection signal of eight pressure transducers 01 is sent to amplifier 02 and carries out signal processing and amplifying, so
Carry out modulus standard by high-speed a/d converter 03 afterwards to change, acquisition memory 04 is acquired storage, data processing chip 05 enters line number
According to analyzing and processing, finally being detected structure, and be sent to printing equipment 06 carries out printout.
See Fig. 4-Fig. 6, pressure transducer 01 includes the substrate 11 of rectangle, and the lower section of substrate 11 is connected with installing plate 12,
Two blind holes 13 are provided with the relative front and rear end of substrate, substrate 11 is provided with the installation of up/down perforation adjacent to both ends
Hole 14, two blind holes 13 are located between the both ends installing hole 14 of substrate 11, in two blind holes 12 and rear end face on front end face
Two blind holes 12 are coaxially oppositely arranged one by one, and part that 11 4 blind holes of substrate are located forms two structural I-beams (see Fig. 7), blind
Resistance strain gage 15 (see Fig. 8) is provided with hole, resistance strain gage selects two semi-bridge type resistance-strains, two half-bridges
Two sheet resistance foil gauges (R1 and R3) or (R2 and R4) in type resistance strain gage are respectively arranged in coaxial two blind hole 12,
And two two semi-bridge type resistance strain gages connection composition Wheatstone bridge (see Fig. 9).
Wherein, be provided with rail locating slot 16 on the upper surface of substrate 11, rail 08 be set up in rail locating slot 16 and
Compressed by pressing plate 09, rail bolt to be sequentially passed through and be positioned at sleeper after pressing plate 09, rail 08, substrate 11 and installing plate 12
(see Fig. 2) on 07.
See Fig. 6, the shearing for supporting pressure F is decomposed into left and right each one side of something, one group is formed respectively by pressure transducerF's
Shearing.
See Fig. 7-Fig. 9, shearing produces shear stress, is attached to substrate 11 on the substrate 11 of elastomer sensitizing range (at blind hole 12)
On strain gauge can be converted into the change of resistance, then the voltage millivolt signal that swaps out is become by Wheatstone bridge circuit.
" I-beam " web strain calculation：
According to the mechanics of materials, Nikolay Zhuravsky formula, shearing stress can be expressed as：
Wherein, S-static moment, Jy-the moment of inertia, Q-shearing；
Normal strain is：
Web root：
Web center：
Mean strain：
Electric bridge is exported：
Strength accounting：
For steel alloy：[σ]=200-250MPa
[τ]=150-187.5MPa；
On I-beam
Root bending stress：
On elastomer
Root bending stress：
Overload protection：
Center amount of deflection
Illustrate that installing plate can play a protective role after sensor carries super 16.6t.
When just pressure contacts measured zone (rail break 08) to anterior first wheel in compartment, eight pressure transducers 01 are sensed
The front axle weight of one about 1/4, when anterior second wheel (1.85 meters of wheelspan) touch measured zone (during rail break 08, eight
Pressure transducer experiences about 1/2 front axle weight, when anterior first wheel leaves touches measured zone (rail break), eight
Individual pressure transducer sensing drops to about 1/4 front axle weight again.The signal imitation that pressure transducer is collected is as shown in Figure 10.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (7)
1. a kind of rail truck ultra-deviation load detection system, it is characterised in that：Multiple pressure transducers are included, what is be sequentially connected puts
Big device, high-speed a/d converter, acquisition memory and data processing chip；Described multiple pressure transducers connect with amplifier
Connect, multiple pressure transducers are arranged on one section of sleeper and mean allocation is in the lower section of two rail and along the axis pair of rail
Claim；Described pressure transducer includes the substrate of rectangle, and substrate is provided with blind hole, and two ends on relative front and rear end
The blind hole in face is coaxially oppositely arranged, and resistance strain gage is provided with blind hole, and part that described substrate blind hole is located is I-beam
Structure.
2. a kind of rail truck ultra-deviation load detection system according to claim 1, it is characterised in that：Described data processing
Printing equipment is connected with chip.
3. a kind of rail truck ultra-deviation load detection system according to claim 1, it is characterised in that：Under described substrate
Side is connected with installing plate, and substrate is provided with the installing hole of up/down perforation, the relative front and rear end of described substrate adjacent to both ends
On be provided with two blind holes, two blind holes are located between the installing hole of substrate both ends, two blind holes and rear end on front end face
Two blind holes on face are coaxially oppositely arranged one by one, and part that four blind holes of substrate are located forms two structural I-beams.
4. a kind of rail truck ultra-deviation load detection system according to claim 1, it is characterised in that：Described substrate it is upper
Rail locating slot is provided with end face, described rail shelf is compressed in rail locating slot and by pressing plate, rail positioning spiral shell
Bolt is sequentially passed through and is positioned on sleeper after pressing plate, rail, substrate.
5. a kind of rail truck ultra-deviation load detection system according to claim 3, it is characterised in that：Described resistance-strain
Piece selects two semi-bridge type resistance strain gages, two sheet resistance foil gauges in two semi-bridge type resistance strain gages to be respectively mounted
In two coaxial blind holes, and two two semi-bridge type resistance strain gages connection composition Wheatstone bridges.
6. a kind of rail truck ultra-deviation load detection system according to claim 1, it is characterised in that：Described pressure sensing
Device is eight, and four are provided with below each rail, and symmetrical along the axis of rail.
7. a kind of rail truck ultra-deviation load detection system according to claim 1, it is characterised in that：Described lower section is arranged
The rail part and raw steel rail for having pressure transducer is segmenting structure, that is, form rail break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124668.0A CN106644010A (en) | 2017-03-03 | 2017-03-03 | Railway vehicle overload and imbalanced load detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124668.0A CN106644010A (en) | 2017-03-03 | 2017-03-03 | Railway vehicle overload and imbalanced load detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644010A true CN106644010A (en) | 2017-05-10 |
Family
ID=58848011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710124668.0A Withdrawn CN106644010A (en) | 2017-03-03 | 2017-03-03 | Railway vehicle overload and imbalanced load detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644010A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918419A (en) * | 2017-05-15 | 2017-07-04 | 中国工程物理研究院总体工程研究所 | Disk Brake input pressure measurement sensor |
| CN113091867A (en) * | 2021-04-06 | 2021-07-09 | 郑州铁路职业技术学院 | Railway vehicle overload and unbalanced load detection system |
| CN113685125A (en) * | 2021-08-20 | 2021-11-23 | 中铁第四勘察设计院集团有限公司 | Electronic fire window of interlocking building normal close formula in both sides |
| CN115931097A (en) * | 2022-12-13 | 2023-04-07 | 吉林铁道职业技术学院 | Railway vehicle overload and unbalance load detection device and method thereof |
-
2017
- 2017-03-03 CN CN201710124668.0A patent/CN106644010A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918419A (en) * | 2017-05-15 | 2017-07-04 | 中国工程物理研究院总体工程研究所 | Disk Brake input pressure measurement sensor |
| CN113091867A (en) * | 2021-04-06 | 2021-07-09 | 郑州铁路职业技术学院 | Railway vehicle overload and unbalanced load detection system |
| CN113091867B (en) * | 2021-04-06 | 2023-02-03 | 郑州铁路职业技术学院 | Railway vehicle overload and unbalanced load detection system |
| CN113685125A (en) * | 2021-08-20 | 2021-11-23 | 中铁第四勘察设计院集团有限公司 | Electronic fire window of interlocking building normal close formula in both sides |
| CN115931097A (en) * | 2022-12-13 | 2023-04-07 | 吉林铁道职业技术学院 | Railway vehicle overload and unbalance load detection device and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170510 |