KR20150007182A

KR20150007182A - Device for measuring weight of freight car

Info

Publication number: KR20150007182A
Application number: KR20130081262A
Authority: KR
Inventors: 송기홍
Original assignee: 주식회사 포인트
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2015-01-20

Abstract

The purpose of the present invention is to provide a device for measuring the weight of a freight car, which can be installed any place in rails by considering structural characteristics of a freight car and can accurately and rapidly measure the weight of the freight car. To achieve the above purpose, the device for measuring the weight of a freight car can measures the weight of a freight car by sensing deformation of the rail due to a moving freight car, and comprises: a wheel sensor which senses the movement of a freight car; a deformation sensing device which senses deformation of rails; and a signal processing device which calculates the weight of the freight car based on signals from the wheel sensor and the deformation sensing device. The deformation sensing device comprises: a load cell set which is composed of two load cells for sensing the downward deformation of the rail by being attached to the side unit of two rails respectively; and two converters which output signals according to the deformation of each of the load cell to the signal processing device. In addition, the signal processing device calculates the weight of the freight car according to one wheel by totaling maximum weights sensed by each of the load cells.

Description

[0001] The present invention relates to a device for measuring weight of a freight car,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car weight measuring apparatus, and more particularly, to a car weight measuring apparatus capable of accurately measuring a weight while moving a car at a low speed.

In Korea, trains are divided into passenger and cargo, and so far, Korea carries many cargoes by train.

In the case of a train for freight transportation, it comprises a plurality of freight cars and a locomotive for moving the freight car, and it is necessary to sense the weight of the freight car in order to ensure safe driving.

On the other hand, the simplest method of measuring the weight of a wagon is to install a rail on a weighing platform for sensing weight, and to measure the weight of the wagon by stopping the wagon on the rail.

The above method has a merit that it is possible to measure the weight of a freight car with a relatively simple structure. However, since the weight is measured by stopping the freight car, there is a disadvantage that a lot of time is consumed. In particular, More time is consumed.

An improvement of the above-mentioned stop-count measurement method is disclosed in Japanese Patent No. 363195, in which a car is moved and its weight is measured.

The above-described invention realizes an automatic irregular automatic metering that automatically extracts the weight of a wagon by using a weight pattern while continuing to pass the wagon to be weighed without stopping the wagon metering stand. Thus, According to the invention, even in the conventional car metering method, the car is placed on the weighing platform with the engineer and the receiver mounted on the weighing platform, and the weighing is carried out. However, according to the invention, , The weight value of the car is accurately extracted by the weight graph of the wagon so that the weighing can be carried out automatically. Thus, the efficiency of the weighing of the wagon can be improved and the wagon can be measured anywhere. There are advantages.

Although the above-mentioned invention has an effect of detecting the weight signal output from the weighing platform to continuously detect the weight of the wagon, the configuration of the weighing platform itself is not specifically disclosed. Therefore, in order to install the actual weighing platform, There is a disadvantage to be installed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a car weight measurement device capable of accurately and quickly measuring the weight of a car, which can be installed anywhere on the rail in consideration of the structural characteristics of the car, It is for that purpose.

In order to accomplish the above object, the present invention provides a wagon weight measuring apparatus for measuring the weight of a wagon by detecting a deformation of a rail by a moving wagon, the wagon sensor comprising: a wheel sensor for detecting movement of a wagon; A deformation detecting device for detecting the deformation of the rail; And a signal processing device for calculating a weight of the vehicle based on the signals of the wheel sensor and the deformation sensing device, wherein the deformation sensing device is attached to the side surfaces of the two rails to detect a downward deformation of the rail A load cell set composed of two load cells and two converters for outputting a signal corresponding to deformation of each of the load cells to the signal processing apparatus, wherein in the signal processing apparatus, And calculating the maximum weight detected by the cell.

Preferably, the load cell is attached to the side surface of the rail with a length of 20 cm to 80 cm.

More preferably, the central portion of the load cell is located at a middle distance between the rail strut and the strut.

More preferably, the load cell set is composed of four, and the output of each load cell set is output to the signal processing device.

More preferably, the signal processing apparatus calculates the final weight of the wagon by averaging the weight of the wagon for one wheel detected by each of the load cell sets, And calculating the sum of the weight of the wagon for the one wheel after passing through the deformation sensing device.

The apparatus for weighing a car according to the present invention comprises a plurality of load cells attached to a side surface of a rail and measuring the weight of the car by using deformation signals of the plurality of load cells when the car is moving on a rail provided with the load cell The weight of the car can be measured by merely attaching the necessary load cell to the side surface of the rail. Further, after measuring a plurality of weights of the car by a plurality of load cells, And the degree of measurement is increased.

Fig. 1 is a configuration diagram of a cosmetic weighing apparatus according to the present invention,
FIG. 2 is a configuration diagram of the deformation sensing apparatus shown in FIG. 1,
Figure 3 is a cross-sectional view of the rail shown in Figure 1,
FIG. 4 is a configuration diagram showing an embodiment in which four load cells of the strain sensor shown in FIG. 1 are installed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, the apparatus 100 for measuring car weight according to the present invention comprises a deformation sensing apparatus 20 for measuring a deformation of a rail 10 and a deformation detecting apparatus 20 for measuring a deformation of the rail 10 A wheel sensor 50 attached to the side of the wagon wheel to recognize the wagon wheel, a signal processor 70 for calculating the weight of the wagon based on signals from the deformation sensor 20 and the wagon sensor 50, .

Since the present invention can measure any moving object moving on the railway, such as a locomotive, a bogie itself when producing a bogie, etc., the wagon car must be understood as a concept including such a moving object.

2, the deformation sensing apparatus 20 includes a plurality of load cells 21 and a plurality of converters 22 for outputting electrical signals according to deformation of the load cells 21, And one transducer 22 is associated with one load cell 21. [0035]

The load cell 21 is preferably a relatively low cost strain gauge, but any type of sensor can be applied in which the physical properties are modified according to the deformation of the deformable body.

The output of the converter 22 may be output as an analog signal, but may be converted to a digital signal if necessary and then output. .

3, the end portion of the rail 10 is divided into a support portion 11, a side portion 12 and an upper end portion 13. The load cell 21 is connected to a side surface of the rail 10, (12) to detect deformation of the rail (10).

The length of the load cell 21 is preferably set to a length of 20 cm to 80 cm. When the length of the load cell 21 is less than 20 cm, it is difficult to attach the rail 10 to the rail 10. When the length of the load cell 21 exceeds 80 cm, the deformation of the rail 10 can not be accurately detected.

3, the rail 10 is supported by the strut 1 so that the load cell 21 is installed such that the center of the load cell 21 is positioned between the strut 1 and the strut 1 It is possible to sense the deformation of the rail 10 at the maximum.

In addition, as shown in FIG. 4, the load cell 21 is preferably provided with four load cell sets 30 installed at the same positions of the two rails 10, respectively.

Although the distance between the load cell set 30 and the load cell set 30 is not necessarily constant, it is preferable that the distance between the load cell set 30 and the load cell set 30 is as long as possible As shown in Fig.

The load cell set 30 calculates the weight of the wagon wheel axis by summing the weights of the wagons input from the load cells 21 by two.

Since the wagon carries at a speed of less than 5 km per hour and passes through all of the four load cell sets 30, the same weight should be theoretically measured, but some differences may occur depending on the moving conditions, It is preferable that the weight detected in the load cell set 30 is averaged and the final weight is calculated by the weight of one wagon wheel axis.

The number of the load cell sets 30 can be changed, and an average value can be calculated according to the number of the load cells.

Meanwhile, the plurality of converters 22 output signals to the signal processor 70. When the output of the converter 22 is analog, the signal processor 70 separately includes an A / D converter And does not include a separate A / D converter in the case of digital, and wires all of the outputs of the individual converters 22 to be transmitted to the signal processor 70. [

The converter 22 and the signal processor 70 may be implemented in a form that supports the network. For example, if the converter 22 is implemented by CAN communication, CAN-L can be networked with only two lines, thereby providing convenience of wiring and providing convenience in addition of the load cell set 30. [

On the other hand, a wheel sensor 50 is installed on the side of each rail 20 to detect whether the car is moving or not, and outputs a signal to the signal processor 70.

The wheel sensor 50 is preferably a sensor for recognizing a wagon wheel, and is preferably implemented as a proximity sensor.

The wheel sensor 50 may include a network function and may be connected to a network of the load cell set 30 to output a signal to the signal processing device 70 .

Meanwhile, the signal processing device 70 performs a function of calculating the weight of the car using signals from the plurality of transducers 22 and the wheel sensor 50.

The signal processing device 70 receives the signal output of the load cell set 30 sequentially when the entry of the car is confirmed by the wheel sensor 50 first.

At this time, since one load cell set 30 is composed of two load cells 21, the signals corresponding to the respective load cells 21 are summed to calculate a weight corresponding to one wheel.

At this time, the weight of the wagon corresponding to one wheel is curved according to the movement of the wagon, but the maximum value is calculated by the weight, the maximum value sensed by each load cell 21 is calculated by weight, 21) is selected as the weight of one load cell set (30).

That is, the weight detected in all of the load cell sets 30 installed is calculated as described above, and the weight is finally averaged to calculate the weight of the wagon for one wheel.

Since a freight car usually includes a plurality of wheels, it is possible to calculate the weight of a freight car by counting the number of wheels and summing the weights of all wheels.

The signal processor 70 may be connected to a separate computer, if necessary, to output or store the weight value of the wagon.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And all of the various forms of embodiments that can be practiced without departing from the technical spirit.

1: strut 10: rail
11: Support part 12: Side part
13: upper end portion 20: deformation detecting device
21: load cell 22: converter
30: load cell set 50: wheel sensor
70: Signal processing device 100: Weighing device

Claims

A wagon cargo weighing apparatus for measuring the weight of a wagon by detecting a deformation of a rail by a moving wagon,
A wheel sensor for detecting the movement of the wagon;
A deformation detecting device for detecting the deformation of the rail; And
And a signal processing device for calculating the weight of the vehicle based on the signals of the wheel sensor and the deformation sensing device,
Wherein the deformation sensing apparatus comprises a load cell set which is attached to two side surfaces of the rail and which is configured to detect a downward deformation of the rail, and two load cell sets each of which outputs signals to the signal processing apparatus Wherein the signal processor calculates the weight of the wagon by one wheel by summing the maximum weights detected by the load cells.

The apparatus according to claim 1, wherein the load cell is attached to a side portion of the rail with a length of 20 cm to 80 cm.

The apparatus according to claim 2, wherein a center portion of the load cell is located at a middle distance between the rail strut and the strut.

4. The apparatus according to claim 3, wherein the load cell set is composed of four, and the output of each load cell set is output to the signal processor.

[Claim 4] The method according to claim 4, wherein the signal processing apparatus calculates a final weight of the wagon by averaging the weight of the wagon for one wheel detected by each load cell set, And calculating the sum of the weights of the wagons for the one wheel after passing through the deformation detecting device.