CN207649741U - A kind of steel rail wheel load sensor - Google Patents
A kind of steel rail wheel load sensor Download PDFInfo
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- CN207649741U CN207649741U CN201721546292.4U CN201721546292U CN207649741U CN 207649741 U CN207649741 U CN 207649741U CN 201721546292 U CN201721546292 U CN 201721546292U CN 207649741 U CN207649741 U CN 207649741U
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- elastomer
- steel rail
- wheel load
- rail
- cable
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Abstract
A kind of steel rail wheel load sensor, the strain gauge and cable of Wheatstone bridge are constituted including elastomer, on elastomer, elastomer is flaky texture, the center of elastomer side is equipped with strain regions, strain gauge is set on strain regions, and the other side for not pasting strain gauge of elastomer is close to the web of the rail and is fixed on rail by way of welding or pasting；The elastomer is two, is separately positioned on the left and right sides of steel rail web, strain gauge is interconnected in terminal box by cable and forms Wheatstone bridge two-by-two.The utility model has the characteristics that simple and reasonable, easy for installation, maintenance cost is low, without cutting rail, it need not punch, do not weaken rail strength, do not influence traffic safety, sensor is connected and fixed mode using non-bolt, output signal is not influenced by bolt looseness, the weighing precision and long-time stability of axle sensor are substantially increased, while cost is also more cheap, is suitable for steel rail wheel load and weighs field.
Description
Technical field
The utility model is related to a kind of weighing sensors, and in particular to a kind of steel rail web that is installed on is for axle weighing
Steel rail wheel load sensor.
Background technology
The sensor for being presently used for rail axle weighing mainly has two kinds of mounting means of filling type and clamped contact formula.
The advantages of squeeze-in type wheel load sensor is that equipment cost is relatively low, and installation process is：Sensor passes through in-orbit in advance
The bellmouth processed on waist tightens the head bolts of the small tapered end of sensor, makes the taper loading end of sensor and the cone of the web of the rail
Shape hole fits closely, to realize axle weighing.Since web of the rail bellmouth difficulty of processing is big, precision is relatively low, takes turns weight information often
It is difficult to the accurate transmission, squeeze-in type wheel load system sensor is often difficult to meet high accuracy weighing；In addition sensor output signal is easy
It is influenced and is become smaller by bolt looseness, bolt needs periodically to fasten, and maintenance cost is higher.Such as Patent No.
The Chinese patent of CN200810121724.6.
The advantages of clamped contact formula wheel load sensor is easy for installation, is generally made of sensor and clamping device.Such as
The Chinese patent of Patent No. CN201020256600.1《Clamping contact type steel rail wheel weight sensor》, it is equipped with ring body, ring body
It is inside connected with web, web is equipped with resistance strain gage, is characterized in that ring body rear end is connected with end cap, equipped with the position for being connected in pedestal
Holder in rail side is equipped with clamping screw in the screw hole of holder, when the sensor ring body abuts against rail web center
When layer position, the clamping screw front end energy overhead is in the outer end of the sensor end cap, the wire grid one of the resistance strain gage
Part is parallel with one diametric(al) of ring body, resistance strain gage wire grid rest part and the diametric(al) right angle intersection, when described
For wire grid when a part of and horizontal direction angle is 45 °, wire grid rest part and horizontal direction angle are 135 °.This sensor
It is fixed on steel rail web by clamping device, weight signal is taken turns and is transmitted by grip friction power, but have a disadvantage in that：Sensor is defeated
It is less than normal to go out signal, class of accuracy is not usually high, and sensor output signal size is affected by bolt tightness in addition, spiral shell
Bolt needs are periodically tightened, and maintenance cost is also relatively high.
Invention content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, peace for the above-mentioned state of the art
Dress is convenient and uses reliable and stable steel rail wheel load sensor.
Technical solution is used by the utility model solves above-mentioned technical problem：A kind of steel rail wheel load sensor, including
Elastomer, the strain gauge and cable that Wheatstone bridge is constituted on elastomer, it is characterised in that：The elastomer is thin slice
The center of shape structure, elastomer side is equipped with strain regions, and strain gauge is set on strain regions, and elastomer does not paste strain gauge
The other side is close to the web of the rail and is fixed on rail.
As an improvement, the elastomer is two, it is separately positioned on the left and right sides of steel rail web, is set in each elastomer
There are two strain gauges, two one group of strain gauges compositions to be interconnected in terminal box by cable and form Wheatstone bridge.
As an improvement, the side that the elastomer does not paste strain gauge is symmetrically fixed on rail by way of welding or pasting
On the web of the rail.
It improves again, the anti-aging flexible material for increasing leakproofness is equipped with above the elastomer, on the web of the rail, elasticity
The outer side covering of body has sealant.
It improves again, the terminal box is equipped with the waterproof connector of connecting cable, and cable is fixed on by waterproof connector
In terminal box.
Finally, the waterproof connector is three, and wherein two waterproof connector is connected by cable with two groups of strain gauges,
Another waterproof connector is connected by signal output cable with display instrument.
Compared with prior art, the utility model has the advantage of：Install convenient need to only carry out the simple of installation region and beat
Mill, you can fix sensor by the modes such as welding or pasting so that the installation of sensor is fixed without cutting rail, is not needed
Punching, does not weaken rail strength, does not influence traffic safety, and sensor is connected and fixed mode using non-bolt, and output signal is not
It is influenced by bolt looseness, is not needed regular fastening bolt, maintenance cost is low.The utility model has simple and reasonable, installation
Convenient, the features such as maintenance cost is low, substantially increase the weighing precision and long-time stability of axle sensor, at the same cost also compared with
It is cheap, is suitable for steel rail wheel load and weighs field.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram that the utility model embodiment is mounted on rail；
Fig. 3 is the side view of Fig. 2.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figures 1 to 3, a kind of steel rail wheel load sensor, including elastomer 1, the composition favour stone electricity on elastomer 1
The strain gauge 2 and cable 5 of bridge, elastomer 1 be flaky texture, light-weight, convenient transportation, installation amount it is small, it can be achieved that
The convenient installation of sensor and replacement；Elastomer 1 is two, is symmetrically arranged at the left and right sides of 7 web of the rail 71 of rail, bullet
Property 1 side of body center be equipped with strain regions, strain gauge 2 be set to strain regions on, strain gauge 2 by cable 5 two-by-two mutually
It is connected to 4 inner composition Wheatstone bridge of terminal box, eventually by the output of cable 5 voltage signal corresponding with wheel weight；Elastomer 1
The other side for not pasting strain gauge 2 be symmetrically fixed on by way of welding or pasting on the web of the rail 71 of rail 7；Elastomer 1
Top is equipped with the anti-aging flexible material 6 for increasing leakproofness, and the influence for rainwater and silt to be isolated can promote sensor
The side outlet of waterproof and dampproof performance, terminal box 4 is equipped with waterproof connector 3, and cable 5 is fixed on wiring by waterproof connector 3
On box 4, waterproof connector 3 is three, and wherein two waterproof connector 3 is connected by cable 5 with two groups of strain gauges 2, another
Waterproof connector 3 is connected by cable 5 with display instrument, and such sensor signal can be drawn by cable 5, the web of the rail
The outer side covering of elastomer 1 on 71 has sealant 8, the substance that the influences such as silt are weighed can not only be isolated, but also can promote sensor
Sealing performance.
When installation, only need to simply it be polished in the 71 both sides installation region of the web of the rail of rail 7, you can by welding or pasting
Mode elastomer 1 is fixed, entire installation is fixed without cutting rail 7, need not punch, not weaken 7 intensity of rail, no
Traffic safety is influenced, and mode is connected and fixed using non-bolt, output signal is not influenced by bolt looseness, need not be regular
Fastening bolt；Increase the anti-aging flexible material 6 of leakproofness due to being equipped on elastomer 1, the outer side covering of elastomer 1 has
Sealant 8 is not only isolated the substance that the influences such as silt are weighed, and can promote the leakproofness and long-time stability of sensor significantly.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (6)
1. a kind of steel rail wheel load sensor, including elastomer, the strain gauge and cable that constitute on elastomer Wheatstone bridge
Line, it is characterised in that：The elastomer is flaky texture, and the center of elastomer side is equipped with strain regions, and strain gauge is set
In on strain regions, the other side for not pasting strain gauge of elastomer is close to the web of the rail and is fixed on rail.
2. steel rail wheel load sensor according to claim 1, it is characterised in that：The elastomer is two, is respectively set
In the left and right sides of steel rail web, strain gauge is interconnected in terminal box by cable and forms Wheatstone bridge two-by-two.
3. steel rail wheel load sensor according to claim 2, it is characterised in that：The elastomer does not paste the side of strain gauge
It is symmetrically fixed on steel rail web by way of welding or pasting.
4. steel rail wheel load sensor according to claim 3, it is characterised in that：Increase is equipped with above the elastomer
The anti-aging flexible material of leakproofness, on the web of the rail, the outer side covering of elastomer have sealant.
5. according to the steel rail wheel load sensor described in Claims 2 or 3 or 4, it is characterised in that：The terminal box is equipped with connection
The waterproof connector of cable, cable are fixed on by waterproof connector in terminal box.
6. steel rail wheel load sensor according to claim 5, it is characterised in that：The waterproof connector is three, wherein two
A waterproof connector is connected by cable with two groups of strain gauges, another waterproof connector passes through signal output cable and display
Instrument is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546292.4U CN207649741U (en) | 2017-11-17 | 2017-11-17 | A kind of steel rail wheel load sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546292.4U CN207649741U (en) | 2017-11-17 | 2017-11-17 | A kind of steel rail wheel load sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207649741U true CN207649741U (en) | 2018-07-24 |
Family
ID=62888743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721546292.4U Active CN207649741U (en) | 2017-11-17 | 2017-11-17 | A kind of steel rail wheel load sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207649741U (en) |
-
2017
- 2017-11-17 CN CN201721546292.4U patent/CN207649741U/en active Active
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