CN110220621A - A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load - Google Patents
A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load Download PDFInfo
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- CN110220621A CN110220621A CN201910657681.1A CN201910657681A CN110220621A CN 110220621 A CN110220621 A CN 110220621A CN 201910657681 A CN201910657681 A CN 201910657681A CN 110220621 A CN110220621 A CN 110220621A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 47
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 230000005483 Hooke's law Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- 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
- G01G19/025—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles wheel-load scales
- G01G19/027—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles wheel-load scales using electrical weight-sensitive devices
-
- 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
- G01G19/042—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 having electrical weight-sensitive devices
-
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
- G01G23/012—Testing or calibrating of weighing apparatus with load cells comprising in-build calibration weights
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2268—Arrangements for correcting or for compensating unwanted effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2268—Arrangements for correcting or for compensating unwanted effects
- G01L1/2281—Arrangements for correcting or for compensating unwanted effects for temperature variations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of rail head of rail formula strain gauges for the detection of rail truck Super leaning load, including there are two the matrixes of rectangle and two rail clamps；Blind hole there are two being respectively provided on each matrix opposite vertical medial surface and vertical lateral surface, and the blind hole of two sides is coaxially oppositely arranged one by one, and resistance strain gage is provided in blind hole, part where two coaxial blind holes of matrix is to shear girder construction；The both ends of two matrixes pass through corresponding rail clamp and are fixedly connected, and when installation, support is connected with carrying bolt between two matrix tops and the lower jaw of rail head of rail.When wheel is by rail section where rail stress sensor, wheel acts on rail head of rail, rail head of rail stress is deformed, the variable quantity of rail head of rail formula strain gauge acquisition rail stress, then the stress condition of wheel on the rail of both sides is analyzed, obtain rail truck whether overload or unbalance loading as a result, detection accuracy is high, testing result is accurate.
Description
Technical field
The present invention relates to pressure sensing arts, specifically a kind of rail head of rail formula for the detection of rail truck Super leaning load is answered
Force snesor.
Background technique
Railway is chiefly used in the transport of long range, cheap to have obtained quick development because its speed is fast.When train is in
In the state of overload or unbalance loading, traffic accident is easily caused, the loss of life and property is caused.But the overload of vehicle on railway,
The detection of unbalance loading and gross weight, at present or by the way of parking detection, detection mode is troublesome and falls behind relatively.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rail head of rail formulas for the detection of rail truck Super leaning load to answer
Force snesor, structure is simple, easy for installation, can acquire the variable quantity of rail stress in real time, reaches to acquire data by stress
The purpose detected to rail truck Super leaning load.
The technical solution of the present invention is as follows:
A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load, including there are two the matrixes of rectangle
With two rail clamps；Blind hole there are two being respectively provided on each matrix opposite vertical medial surface and vertical lateral surface, and two sides
The blind hole in face is coaxially oppositely arranged one by one, and resistance strain gage is provided in blind hole, and part where two coaxial blind holes of matrix is
Shear girder construction；Each rail clamp includes switching beam, two clamping plates for being connected to switching beam both ends, and each clamping plate is equal
It include vertical portion and bending part, the bottom end of bending part is connected to the top of vertical portion and the angle between bending part and vertical portion
Top for obtuse angle, two clamping plate bending parts is oppositely arranged, and the bottom end of two clamping plate vertical portions is respectively fixedly connected in switching beam
Both ends, the both ends of one of matrix respectively with the top of one of clamping plate of rail clamp and another rail clamp
The top of one of clamping plate is fixedly connected, the both ends of another matrix top with rail clamp another clamping plate respectively
It is fixedly connected with the top of another rail clamp another clamping plate, and between two matrix tops and the lower jaw of rail head of rail
Support is connected with carrying bolt.
It is provided with clamping slot on the middle part of the matrix and between two groups of coaxial blind holes, carrying bolt
Bottom is connected in clamping slot, and the top of carrying bolt and the lower jaw of rail head of rail are in close contact.
The 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 two coaxial blind holes, and two two semi-bridge type resistance strain gages connection composition works
Make electric bridge.
Offer positioning step on two clamping plate tops of the rail clamp, it is perpendicular for the positioning steps of two clamping plates
It faces directly and is oppositely arranged, the both ends of the matrix are respectively supported on the horizontal plane of corresponding positioning step and matrix both ends
The vertical plane of vertical lateral surface and positioning step is in close contact.
Its bottom of the both ends of the matrix offers rectangular notch, the part of the matrix both ends rectangular notch
The vertical plane of the vertical lateral surface and positioning step that are respectively supported on the horizontal plane of corresponding positioning step and matrix both ends is tight
Contiguity touching.
Advantages of the present invention:
The matrix of double shear beam structure is installed below rail head of rail by the present invention by rail clamp makes rail rail
Head is supported on matrix, realizes rail stress detection, when wheel is by rail section where rail stress sensor, wheel
It acts on rail head of rail, rail head of rail stress is deformed, and rail head of rail formula strain gauge acquires the variation of rail stress
Amount, then the stress condition of wheel on the rail of both sides is analyzed, obtain rail truck whether overload or unbalance loading as a result, inspection
It is high to survey precision, testing result is accurate；The present invention is small in size, is easily installed, and does not change the original structure of railway track, measurement essence
Reachable 0.3-0.5% is spent, service life can reach 1,000,000 times or so.
Detailed description of the invention
Fig. 1 is the main view that the present invention is installed on rail.
Fig. 2 is the side view that the present invention is installed on rail.
Fig. 3 is the half sectional view of matrix of the present invention.
Fig. 4 is the structural schematic diagram of two semi-bridge type resistance strain gages of the invention.
Fig. 5 is the structural schematic diagram of present invention work electric bridge.
Fig. 6 is the mechanical model schematic diagram of load shear beam.
Fig. 7 is the mechanical model schematic diagram of load pillar beam.
Fig. 8 is the strain zone position and stress envelope of shear beam part of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
See Fig. 1-Fig. 3, a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load, including there are two
The matrix 1 of rectangle and two rail clamps；There are two being respectively provided on each matrix 1 opposite vertical medial surface and vertical lateral surface
Blind hole 11, and the blind hole 11 of two sides is coaxially oppositely arranged one by one, and resistance strain gage is provided in blind hole 11, matrix 1 is coaxial
Two blind hole 11 where part be shearing girder construction；Each rail clamp includes switching beam 2, two and is connected to switching beam
The clamping plate 3 at 2 both ends, each clamping plate 3 include vertical portion and bending part, the bottom end of bending part be connected to the top of vertical portion and
Angle between bending part and vertical portion is obtuse angle, and the top of two 3 bending parts of clamping plate is oppositely arranged, two 3 vertical portions of clamping plate
Bottom end be respectively fixedly connected in the both ends of switching beam 2, the both ends of one of matrix 1 respectively with a rail clamp wherein one
The top of a clamping plate 3 is fixedly connected with the top of the one of clamping plate 3 of another rail clamp, the both ends point of another matrix 1
It is not fixedly connected with the top of another clamping plate 3 of top and another rail clamp of rail clamp another clamping plate 3, base
It is provided with clamping slot 4 on the middle part of body 1 and between two groups of coaxial blind holes, the bottom of carrying bolt 5 is connected to spiral shell
It tethers in access slot 4, the top of carrying bolt 5 and the lower jaw of 6 rail head of rail are in close contact.
Wherein, offer positioning step 8 on two 3 tops of clamping plate of rail clamp, the positioning steps of two clamping plates 3 its
Vertical plane is oppositely arranged, its bottom of the both ends of matrix 1 offers rectangular notch 7, the part of 1 both ends rectangular notch 7 of matrix
It is respectively supported on the horizontal plane of corresponding positioning step 8 and the vertical plane of the vertical lateral surface at 1 both ends of matrix and positioning step 8
It is in close contact.
Wherein, resistance strain gage selects two semi-bridge type resistance strain gages (see Fig. 4), two semi-bridge type resistance-strains
Two sheet resistance foil gauges in piece are respectively arranged in two coaxial blind holes, and two two semi-bridge type resistance strain gages connections
It forms work electric bridge (see Fig. 5).
See Fig. 1 and Fig. 2, when installation, two rail clamps are located on the web of the rail and rail bottom of rail 6, two rail clamps
Attachment beam 2 and rail 6 bottom end abutting contact, the vertical medial surface of two matrixes 1 is close to the web of the rail of rail 6, the rail of rail 6
Head is supported in the top of two matrixes 1 by carrying bolt 5.
See Fig. 4, matrix principle of the invention is analogous to general strain gauge transducer, but present invention employs two double strains
The resistance strain gage of piece is pasted onto the two sides of stressed plate.See Fig. 5, the present invention at work, R in foil gauge1Such as just sheared
Power, that R2Also by negative shearing force, and another pair strains the R in handling affairs3By positive shearing force, R4It is formed by negative shearing force, such as Fig. 5
Work electric bridge.
R is foil gauge impedance, and the matrix of rail stress sensor can generate deformation when by external force, cause
The foil gauge impedance being tightly attached on the intrinsic silicon wall of rail stress sensor linearly increaseds or decreases.There is external power supply (3-
In the case where 12VDC), the differential levels mv signal also linearly increasing reduction of output, sensor is sensitive by a group bridge, zeroing, trim
After degree, temperature compensation etc., signal=supply voltage x sensitivity of output.For example regulated power supply is 10VDC, transducer sensitivity is
1.5mv/V, the voltage=10x1.5=15mv exported when sensor is to full scale, if necessary to 0-5V (4-20mA etc.) master die
Quasi- signal is needed with signal adapter (transmitter).
Matrix mechanics principle:
The matrix of rail stress sensor of the invention is a board-like type beam and machined two in beam both ends appropriate location
A blind hole, whole force measuring structure are shear beam, are the stress measurement mode of elastomer.The matrix of rail stress sensor is by outer
When forcing power, measurand can be deformed (strain) on object, can restore former again after external force removal
The shape and size come, i.e., it is this to be deformed into flexible deformation.Elastomer is one of the matrix element for constituting sensor, it is had
Matrix physical property can be indicated with following equation:
A, σ=E × ε, be axial stress strain Hooke's law, i.e. the elastic modulus E of elastomer determine axial stress σ and
Linear relationship between axial strain ε.
b、ε1=μ × ε, elastomer other than generating axial strain ε, are accompanied by transverse direction under above-mentioned responsive to axial force
Strain stress1.Ratio Poisson's ratio μ between the two is party's number.
C, τ=G × γ is pure shear Hooke's law.When elastomer is by shearing force, by the shear stress on shear surface
The opposite angular strain γ generated between τ and section is in a linear relationship, and depends on the elastic shear modulus G of elastic material.
It is above-mentioned；There is following relationship between three characterisitic parameters E, G and μ of elastic material:
G=E/ (2 × (1+ μ)).
The matrix force analysis of rails strain gauge:
1., the matrix of rail stress sensor of the present invention can be simplified to both ends stress concentrfated load shear beam or pillar beam,
Mechanical model schematic diagram is shown in Fig. 6 and Fig. 7.The base structure of shear beam rail stress sensor deforms feelings when being under pressure
The deformation of condition, the pressure and sensor that are subject to is most directly proportional.When the matrix stress deformation of rail stress sensor, cause interior
The foil gauge in portion changes, and exports corresponding pressure signal.
2., the Stress calculation of intermediate stress load effect:
3., the shear stress of beam and shearing strain calculate
Shear beam sensor generally adds two blind holes (being partially formed shear beam), shear stress in the inflection point of strain beam
It can be calculated with Nikolay Zhuravsky formula:
The strain zone position and stress distribution of partial cut girder construction are as shown in Figure 8.
In above formula:
Shear Q:
Static moment S of the shearing section to axisy:
Moments of inertia J of the shearing section to axisy:
Then
The principal stress and principal strain in 45 ° of directions calculate, and the length variation of spool directional pressure at 45 °, exactly pure along beam
Principal direction of stress under shearing force state, principal stress and maximum shear stress, principal strain and maximum shear strain in following relationship:
Transducer sensitivity calculates:
In formula: K-- resistance strain gage sensitivity coefficient
The bulk technology parameter of rail stress sensor:
Range: (30+30) t；
Accuracy: 0.2%FS；
Operating voltage: 12VDC；
Output signal: (0-10) mV；
Operating temperature: -20 DEG C -70 DEG C；
Limiting pressure: >=(40+40) t；
Input impedance: 700 ± 20 Ω；
Output impedance: 700 ± 5 Ω；
Insulation resistance: >=5000M Ω；
It is non-linear: ± 0.3%FS；
Lag: ± 0.3%FS；
Repeatability: ± 0.5%FS.
A kind of rail truck Super leaning load detection method, has specifically included following steps:
Two rail stress sensors are installed on the rail of both sides and two rail stress sensors are along both sides rail
Central axes are symmetrical.When four, the vehicle wheel of axle eight all passes through rail stress sensor, the conversion of rail stress sensor
At one group of detection signal, signal is detected by analogue signal processor and A/D converter and is converted into digital signal, is then communicated to
Host data processor unit obtains testing result by data operation.The testing results such as weighting, the unbalance loading of vehicle pass through communication
System sends detection information and alarm signal to cargo chamber.
Data operation processing method:
1, it lays particular stress on: weighting=forecarriage weight-trailing bogie weight
2, unbalance loading:
Unbalance loading refers mainly to lateral unbalance loading, i.e. center of gravity of goods transversal displacement.
Unbalance loading=(light weight ÷ goods weight+1) × 746.5 × vehicle unbalance loading rate=[light weight ÷ (vehicle gross weight
Amount-light weight)+1] × 746.5 × vehicle unbalance loading rate
Wherein, vehicle unbalance loading rate=(4, left side wheel load-bearing -4, the right wheel load-bearing) ÷ vehicle total weight
3, it overloads:
Overload=goods weight-vehicle nominal weight=(vehicle total weight-light weight)-vehicle nominal weight.
Before the detection of rail truck Super leaning load, on-site test data scaling is carried out to complete machine using dynamic calibration mode.Using
Counterweight vehicle (inspection weighing apparatus vehicle) backhauls row on the track equipped with the present apparatus, continuous measurement 10 times, according to the average value of measurement result,
Scale parameter between the zero point parameter and measurement value sensor and real load of adjustment system.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load, it is characterised in that: including there are two
The matrix of rectangle and two rail clamps；It is blind there are two being respectively provided on each matrix opposite vertical medial surface and vertical lateral surface
Hole, and the blind hole of two sides is coaxially oppositely arranged one by one, and resistance strain gage, two coaxial blind hole institutes of matrix are provided in blind hole
It is shearing girder construction in part；Each rail clamp includes switching beam, two clamping plates for being connected to switching beam both ends, often
A clamping plate includes vertical portion and bending part, the bottom end of bending part be connected to the top of vertical portion and bending part and vertical portion it
Between angle be obtuse angle, the top of two clamping plate bending parts is oppositely arranged, and the bottom end of two clamping plate vertical portions is respectively fixedly connected with
In the both ends of switching beam, the both ends of one of matrix respectively with the top of one of clamping plate of rail clamp and another
The top of the one of clamping plate of rail clamp is fixedly connected, another is pressed from both sides with a rail clamp respectively at the both ends of another matrix
The top of another clamping plate of the top of plate with another rail clamp is fixedly connected, and under two matrix tops and rail head of rail
Support is connected with carrying bolt between jaw.
2. a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load according to claim 1,
It is characterized in that: being provided with clamping slot, carrying bolt on the middle part of the matrix and between two groups of coaxial blind holes
Bottom be connected in clamping slot, the lower jaw of the top of carrying bolt and rail head of rail is in close contact.
3. a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load according to claim 1,
Be characterized in that: the resistance strain gage selects two semi-bridge type resistance strain gages, in two semi-bridge type resistance strain gages
Two sheet resistance foil gauges be respectively arranged in two coaxial blind holes, and two two semi-bridge type resistance strain gages connection composition
Work electric bridge.
4. a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load according to claim 1,
Be characterized in that: offering positioning step on two clamping plate tops of the rail clamp, the positioning steps of two clamping plates its
Vertical plane is oppositely arranged, and the both ends of the matrix are respectively supported on the horizontal plane of corresponding positioning step and matrix both ends
Vertical lateral surface and positioning step vertical plane be in close contact.
5. a kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load according to claim 4,
Be characterized in that: its bottom of the both ends of the matrix offers rectangular notch, the portion of the matrix both ends rectangular notch
It is respectively supported on the horizontal plane of corresponding positioning step and the vertical lateral surface at matrix both ends and the vertical plane of positioning step
It is in close contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657681.1A CN110220621A (en) | 2019-07-20 | 2019-07-20 | A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657681.1A CN110220621A (en) | 2019-07-20 | 2019-07-20 | A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110220621A true CN110220621A (en) | 2019-09-10 |
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ID=67813574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910657681.1A Pending CN110220621A (en) | 2019-07-20 | 2019-07-20 | A kind of rail head of rail formula strain gauge for the detection of rail truck Super leaning load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110220621A (en) |
Cited By (6)
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| CN110987132A (en) * | 2019-12-27 | 2020-04-10 | 陕西四维衡器科技有限公司 | Double-output shear beam type weighing sensor and load position detection method |
| CN111595425A (en) * | 2020-06-19 | 2020-08-28 | 北京华横科技有限公司 | A rail bracket type shear force sensor |
| CN113029407A (en) * | 2021-03-25 | 2021-06-25 | 北京康拓红外技术股份有限公司 | Ruler type wheel-rail force continuous measurement fiber bragg grating sensing device and arrangement method thereof |
| CN113108885A (en) * | 2021-03-02 | 2021-07-13 | 江苏泰力机械科技有限公司 | Track overload and unbalance loading detection device |
| CN113739891A (en) * | 2021-08-30 | 2021-12-03 | 西北铁道电子股份有限公司 | Sensor assembly for dynamic weighing of train and weighing method |
| RU209952U1 (en) * | 2021-11-24 | 2022-03-24 | общество с ограниченной ответственностью "Инженерный центр "АСИ" (ООО "ИЦ "АСИ") | Weight rail lining |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110987132A (en) * | 2019-12-27 | 2020-04-10 | 陕西四维衡器科技有限公司 | Double-output shear beam type weighing sensor and load position detection method |
| CN111595425A (en) * | 2020-06-19 | 2020-08-28 | 北京华横科技有限公司 | A rail bracket type shear force sensor |
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| CN113739891A (en) * | 2021-08-30 | 2021-12-03 | 西北铁道电子股份有限公司 | Sensor assembly for dynamic weighing of train and weighing method |
| CN113739891B (en) * | 2021-08-30 | 2024-01-26 | 西北铁道电子股份有限公司 | Sensor assembly for dynamic weighing of train and weighing method |
| RU209952U1 (en) * | 2021-11-24 | 2022-03-24 | общество с ограниченной ответственностью "Инженерный центр "АСИ" (ООО "ИЦ "АСИ") | Weight rail lining |
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