CN1673696A - Method for non-broken rail full-loaded wagon weighing method and weighing apparatus thereof - Google Patents

Abstract

The no track breaking vehicle weighing method and apparatus is used mainly for weighing various kinds of railway transportation vehicles. The weighing method includes installing filled sensors in the track of bogie with each for one pair of wheels, weighing the units of two wheels, and summing the unit weights. The no track breaking vehicle weighing apparatus includes steel tracks, sleepers and filled sensors and features the sensors set in the track web in certain interval. The present invention has the advantages of high weighing precision, low cost and simple manufacture process.

Description

Weighing technique of a kind of continuous rail car load and meausring apparatus thereof

Technical field

The present invention relates to a kind of track weighing technique and meausring apparatus thereof, weighing technique of especially a kind of continuous rail car load and meausring apparatus thereof, it is mainly used in the weight metering of haulage vehicle such as all kinds of lorries and tank car on railway and the industrial and mining enterprises' track.

Background technology

In railway and the big-and-middle-sized industrial and mining enterprises, the weighing technique of all kinds of trains and railway special vehicle is divided into disconnected rail and two kinds on continuous rail from structure at present, is divided into axle metering, bogie metering and car load from the weighing mode and measures three kinds.Disconnected rail weighing mode weighing precision is higher, but its cost height, long construction period also can cause the distortion of scale body crossbeam and be tending towards unstable along with the prolongation of life cycle and the increase of antifatigue vibratory impulse number of times, and maintenance also can increase thereupon; Though continuous low, the short construction period of rail weighing mode cost, its weighing precision is lower.Axle metering and bogie metering are generally used for dynamic measurement, be characterized in that cost is lower, but when being used for the metering of static car load (by metering method one by one), its weighing precision is lower, its axis measuring accuracy is lower than 1.5%, the bogie measuring accuracy is lower than 0.5%, and particularly the measuring accuracy when weighing dynamic liquid and dope then can be lower than 1%.The car load metering is mainly used in static weighing, and precision is higher when being characterized in weighing dynamic liquid and dope, and precision is 0.3% usually, but cost is also higher.

China Patent No. is that 99253279.5 utility model discloses a kind of " the continuous rail track of combined type meausring apparatus ", pad is provided with pad-board type (rail cushion) sensor between its steel sleeper in a certain interval of railway track and the rail, is equiped with two pair filling type sensors corresponding to both sides, place, steel sleeper place in rail web of the rail place in one section front and rear part of rail.Though this meausring apparatus weighing precision is much improved, and reach the weighing precision level of disconnected rail weighing mode substantially, but owing to need all be provided with pad-board type sensor and filling type sensor at the every pairing rail of steel sleeper place, so cost is still too high, manufacturing process is also still comparatively complicated.

Summary of the invention

Technical matters to be solved by this invention provides the high continuous rail car load weighing technique of a kind of weighing precision,

Another technical matters to be solved by this invention provides a kind of weighing precision height, low, the simple constantly rail car load meausring apparatus of manufacturing process of cost.

The present invention addresses the above problem the technical scheme that is adopted: the filling type sensor at the wheel pairing rail web of the rail place of this continuous rail car load weighing technique by being installed in the wheel position in every interval on the bogie, the set of wheels that to be made up of adjacent two wheels is as a weighing unit, weigh its unit weight, according to total set of wheels number, accumulation calculating goes out complete vehicle weight then.

The present invention addresses the above problem the technical scheme that is adopted to be also had: this continuous rail car load meausring apparatus comprises rail, is laid on the sleeper and the filling type sensor of rail below, its design feature is that described filling type sensor is installed in the pairing rail web of the rail of the wheel that is positioned on bogie place, and the wheel of rail web of the rail place correspondence that the filling type sensor is installed is apart from one another by arrangement.

Filling type sensor of the present invention is two.

The present invention compared with prior art, have following beneficial effect: 1, this continuous rail car load weighing technique belongs to the bogie metering method, it is the filling type sensor of installing at the pairing rail web of the rail of the wheel place that is positioned on the bogie, and the corresponding wheel of filling type sensor of installing is apart from one another by a wheel, with regard to every group of wheel (every group of wheel is made up of two adjacent wheels), formed a weighing unit like this, just constituted a car load meausring apparatus with regard to car load, the alleged weight that gets of weighing unit is added up, just can calculate complete vehicle weight; And weighing technique of existing the type and device need all be equipped with sensor at the pairing rail web of the rail of each wheel place, with each wheel as a weighing unit, carry out accumulation calculating then and draw complete vehicle weight, those skilled in the art only in this way also generally believe could improve weighing precision, as reduce the installation quantity of sensor, though can reduce manufacturing cost, but will certainly reduce weighing precision, and as at the pairing rail web of the rail of each wheel place sensor installations all, though can improve weighing precision, but can improve manufacturing cost; After testing, the present invention but finds the quantity of sensor is reduced half, not only do not reduce weighing precision, improved weighing precision on the contrary, when light weight greater than 25 ton hours, the car load metering of adopting this weighing technique to carry out is compared with original car load metering, its additional theoretical error of introducing is no more than 0.1%, overcome the technology prejudice that always exists in this technical field, having solved should the weighing precision height, the technical barrier of low cost of manufacture again, has outstanding substantive distinguishing features and obvious improvement; 2, this continuous rail car load meausring apparatus has reduced the usage quantity of sensor, reduced manufacturing cost significantly, when having guaranteed the long-term stability of using and reliability of this device, both improved the work efficiency of Installation and Debugging, reduced high requirement again to basic flatness.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention 1.

Fig. 2 is the vertical view (after removing vehicle) of Fig. 1.

Fig. 3 is the A-A cut-open view of Fig. 1.

Fig. 4 is the connecting circuit figure of filling type sensor among the present invention with the instrument of weighing.

Fig. 5 is the structural representation of the embodiment of the invention 2.

Fig. 6 is the vertical view (after removing vehicle) of Fig. 5.

Embodiment

Embodiment 1:

Referring to Fig. 1～Fig. 3, the present embodiment weighing be the complete vehicle weight of vehicle 3, vehicle 3 is a common vehicle, its every group of bogie 4 comprises two groups of wheels, two groups of wheels lay respectively on the both sides rail 1, every group of wheel is made up of two wheels 5.

This weighing technique is the filling type sensor 7 by wheel 5 pairing rail 1 web of the rail place that is installed in the wheel position in every interval on the bogie 4, the set of wheels that to be made up of adjacent two wheels 5 is as a weighing unit, weigh its unit weight, according to total set of wheels number, accumulation calculating goes out complete vehicle weight then.

This meausring apparatus comprises rail 1 and is laid on the sleeper 2 of rail 1 below, wheel 5 pairing rail 1 web of the rail place on the bogie 4 of vehicle 3 is equipped with two filling type sensors 7, and the wheel 5 of rail 1 web of the rail place correspondence that filling type sensor 7 is installed is apart from one another by arrangement, promptly apart from one another by a wheel 5, so just every group of wheel (every group of wheel is made up of two adjacent wheels 5) constituted a weighing unit, car load has been constituted a car load meausring apparatus, then the alleged weight that gets of weighing unit is added up, just can calculate complete vehicle weight.

Concrete computation process of the present invention is as follows:

Below wheel 5 the corresponding filling type sensor of installing 7 be subjected to a heavy P ₁P _iEffect, filling type sensor 7 is inserted the sensor debug circuit of the instrument of weighing, R among Fig. 4 by the requirement of Fig. 4 _i(i=1～n) is for adjusting potentiometer, the output valve U and the heavy P of axle of the instrument that can obtain weighing ₁P _iBetween relation:

$U=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{a}_i\·P_i$ (1) formula

Wherein: a _i---sensitivity coefficient, P _i---weighing axle load

Complete vehicle weight $W=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·P_i+\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\·N_i$

Wherein: N _i---non-weighing axle load

Usually axletree is when dispatching from the factory, with the heavy deviation control of axle of each bogie of vehicle in 50Kg, so complete vehicle weight $W=2\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·P_i+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·\mathrm{\ΔN}$ (2) formula

Δ N≤50Kg wherein

By adjusting potentiometer R _i(i=1～n), can make the sensitivity coefficient of each sensor consistent, i.e. a _i=a (i=1～n).

So (1) formula can be changed into $U=a\·\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·P_i$ (3) formula

So (2) formula can be rewritten as

$W=\frac{2U}{a}+\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·\mathrm{\ΔN}\≈\frac{2U}{a}$

Theoretical error is $\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·\mathrm{\ΔN}$

Be that complete vehicle weight W is directly proportional with instrument output U, because each heavy deviation is a stochastic distribution, so theoretical error $\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\·\mathrm{\ΔN}\≈\frac{50\mathrm{Kg}}{\sqrt{n}}.$

When n 〉=4, its theoretical error is no more than 25Kg, if the car load metering that light weight greater than 25 tons, then adopts this meausring apparatus to carry out is compared with original car load metering, its additional theoretical error of introducing is no more than 0.1% like this.

Filling type sensor 7 in the present embodiment is identical with applicant's disclosed " filling type force cell " structure in the utility model ZL992515661 of application on October 28th, 1999.

Embodiment 2:

Referring to Fig. 5, Fig. 6, the present embodiment weighing be the complete vehicle weight of vehicle 3, vehicle 3 is a special vehicle, it has two groups of bogies 4, every group of bogie 4 comprises eight groups of wheels, eight groups of wheels lay respectively on the both sides rail 1, every group of wheel is made up of two wheels 5.

Except that vehicle 3 differences of weighing, the weighing technique of present embodiment, the structure of meausring apparatus and computing method are all identical with embodiment 1.

In addition, in order to improve weighing precision, the sleeper 2 that the present invention lays below rail 1 flange of rail should have enough rigidity, and it can be steel sleeper or other sleeper; And the bottom that the rigid support thing withstands rail 1 that do not have, rail 1 flange of rail interval that filling type sensor 7 is installed.

Claims (3)

1, a kind of continuous rail car load weighing technique, it is characterized in that: the filling type sensor at the pairing rail web of the rail of the wheel place by being installed in the wheel position in every interval on the bogie, the set of wheels that to be made up of adjacent two wheels is as a weighing unit, weigh its unit weight, according to total set of wheels number, accumulation calculating goes out complete vehicle weight then.

2, a kind of continuous rail car load meausring apparatus, comprise rail, be laid on the sleeper and the filling type sensor of rail below, it is characterized in that: described filling type sensor is installed in the pairing rail web of the rail of the wheel that is positioned on bogie place, and the wheel of rail web of the rail place correspondence that the filling type sensor is installed is apart from one another by arrangement.

3, continuous rail car load meausring apparatus according to claim 2, it is characterized in that: described filling type sensor is two.

Images