CN2187300Y

CN2187300Y - Weight-sensitive device for rails

Info

Publication number: CN2187300Y
Application number: CN 93235249
Authority: CN
Inventors: 杜润祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-17
Filing date: 1993-12-17
Publication date: 1995-01-11
Anticipated expiration: 2003-12-17

Abstract

The utility model provides a weight-sensitive device for rails, composed of a steel rail and a sensor arranged on the rail web of the steel rail. More than 4 even number sensors are arranged on each steel rail, each sensor is composed of two pairs of strain gauge pasting sheets pasted on the two sides of the neutral line of the steel rail. The utility model uses the principle of shear strain and the measuring principle of a bridge circuit, efficiently collecting the deformation signals generated by the bearing power action of the steel rail. The utility model has the advantages of easy manufacture, low cost, and high precision. The utility model can be used for dynamic weighing, over and eccentric load detection, and used as a sensing device for weighing apparatus such as a dynamic electronic rail balance, etc.

Description

Weight-sensitive device for rails

The utility model relates to a kind of rolling stock dynamic weighing, the detection of super unbalance loading and does not have the sensing device of table top dynamic electronic rail balance.

At present, the super unbalance-loading detecting device of rolling stock is general to adopt common rail to make elastic body, common sensor equidistantly is set on rail comes acquired signal, this device is easy to make, and is cheap, but because common rail elastic performance has certain limitation, the setting of conventional sensors and signals collecting mode are unreasonable, thereby often weighing precision is not high, can not satisfy the metrological regulation requirement.And in track scale, often weighting platform is bearing on pillar or the beam type pressure transducer, this weighing apparatus precision is higher, but involve great expense, and be limited to below the 15km/h crossing the weighing apparatus speed of a motor vehicle, should not on railway in operation, use, also should not use in the abominable coal yard of environment, mine.

The purpose of this utility model is to seek a kind of new sensing device, improves the weighing precision of track weighing device by the ability of improving sensor acquisition effective deformation signal, makes it to be more conducive to promote the use of.

The utility model is made of rail and the plurality of sensors that is arranged on the rail web of the rail, be characterized on every rail, being provided with four or more even number sensor, each sensor is pasted on two pairs of strainometer paster points on the neutral line of rail web of the rail both sides and is connected lead by symmetry to be formed, same to strainometer paster point symmetry in rail neutral line point both sides, the centre distance of two pairs of strainometer pasters is among 200-300mm(Fig. 1 1), the centre distance that is arranged in middle two sensors in the even number sensor adds that arbitrary sensor of this two sensors and equidirectional tip sensor centre distance sum are 6800～9900mm(Fig. 1 L13), the centre distance of all the other two adjacent sensors equates and is L12 among 400-1800mm(Fig. 1, L34).

Be described further below in conjunction with accompanying drawing:

Fig. 1 is a track weighing sensing device front elevation;

Fig. 2 is a yi word pattern strain-gage pickup paster synoptic diagram;

Fig. 3 overlooks stretch-out view for yi word pattern strain-gage pickup lead connects;

Fig. 4 is yi word pattern strain-gage pickup check weighing electric bridge connecting circuit figure;

Fig. 5 is chevron shaped strain-gage pickup paster synoptic diagram.

In order to improve elastic body (rail) deformation signal acquisition precision, according to shear strain principle in the mechanics of materials and bridge diagram measuring principle, the kind that strainometer paster point and lead thereof connect according to strainometer in each sensor of the utility model has designed dual mode.

As Fig. 1, Fig. 2, shown in Figure 3, each strainometer paster point is formed by intersect vertical axis and with two " yi word pattern " strainometers of rail neutral line angle at 45 in the aforesaid sensor, code name is 1 and 3 of an odd number, 5 and 7 yi word pattern strainometer constitutes two paster points in the same side, code name is 2 and 4 of an even number, 6 and 8 yi word pattern strainometer constitutes two other paster point in the opposite side corresponding point, with 1 and 2,3 and 4,5 and 6,7 directly link to each other with an end lead of 8, after linking, 1 and 3 other end lead draws measuring point B, after linking, causes by 2 and 5 the other end lead measuring point A, after linking, 6 and 7 other end lead draws measuring point D, after linking, 4 and 8 other end lead draws measuring point C, A and C, B and D promptly form two groups of diagonal line (Fig. 4) of check weighing electric bridge, add for bridge voltage μ 0 at the diagonal line AC of electric bridge end, another diagonal line BD end of electric bridge then is an output terminal, and its output voltage △ μ is directly proportional with the bearing capacity P of rail.

As shown in Figure 5, each strainometer paster point is made up of overlapping " chevron shaped " (claiming shearing-type again) strainometer of a slice axis and the rail neutral line in the aforesaid sensor, code name is 1 ', 3 ' chevron shaped strainometer constitute two paster points in the same side, code name is 2 ', 4 ' chevron shaped strainometer constitute two other paster point in the opposite side corresponding point, with 1 ' with 3 ', 1 ' with 4 ', 4 ' with 2 ', 2 ' with 3 ' an end link and draw measuring point A, B, C, D respectively, A and C, B and D promptly form two groups of diagonal line of check weighing electric bridge, and it is measured as be preceding identical.

Weight-sensitive device for rails is through experimental check, has the advantages such as certainty of measurement height, good stability, hysteresis, creep are little, and is easy to make, cheap, is the sensing device that can promote the use of in present rolling stock dynamic weighing and the super unbalance-loading detecting device. It also is the sensing device of making the dynamic electronic rail balance of no foundation ditch, no weighting platform, continuous rail, non-speed limit.

Claims

1, a kind of track weighing sensing device, constitute by rail and the plurality of sensors that is arranged on the rail web of the rail, it is characterized in that being provided with on the every rail even number sensor more than four, each sensor is pasted on two pairs of strainometer paster points on the neutral line of rail web of the rail both sides and is connected lead by symmetry to be formed, same to strainometer paster point symmetry in rail neutral line point both sides, the centre distance of two pairs of strainometer pasters is 200-300mm, the centre distance that is arranged in middle two sensors in the even number sensor adds that arbitrary sensor of this two sensors and equidirectional tip sensor centre distance sum are 6800～9900mm, and the centre distance of all the other two adjacent sensors equates and is 400-1800mm.

2, track weighing sensing device according to claim 1, it is characterized in that in the described sensor that each strainometer paster o'clock is intersected vertically by two axis and forms with the yi word pattern strainometer of rail neutral line angle at 45, code name is 1 and 3 of an odd number, 5 and 7 yi word pattern strainometer constitutes two paster points in the same side, code name is 2 and 4 of an even number, 6 and 8 yi word pattern strainometer constitutes two other paster point in the opposite side corresponding point, with 1 and 2,3 and 4,5 and 6,7 directly link to each other with an end lead of 8, after linking, 1 and 3 other end lead draws measuring point B, after linking, causes by 2 and 5 the other end lead measuring point A, after linking, 6 and 7 other end lead draws measuring point D, after linking, 4 and 8 other end lead draws measuring point C, A and C, B and D promptly form two groups of diagonal line of check weighing electric bridge.

3, track weighing sensing device according to claim 1, it is characterized in that each strainometer paster point in the described sensor is made up of the overlapping chevron shaped strainometer of a slice axis and the rail neutral line, code name is 1 ', 3 ' chevron shaped strainometer constitute two paster points in the same side, code name is 2 ', 4 ' chevron shaped strainometer constitute two other paster point in the opposite side corresponding point, with 1 ' with 3 ', 1 ' with 4 ', 4 ' with 2 ', 2 ' with 3 ' an end link and draw measuring point A respectively, B, C, D, A and C, B and D promptly form two groups of diagonal line of check weighing electric bridge.