JP2011179991A - Carrying capacity measuring system for truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying capacity measuring system for truck capable of accurately grasping a carrying capacity of a truck and reducing increasing costs for installing measuring equipment. <P>SOLUTION: The carrying capacity measuring system for truck includes the truck 1 equipped with a tank 2; loading equipment for loading a transportation object into the tank 2; a measuring instrument 10, disposed on the loading equipment side and measuring vehicle height settlement of the truck 1; and a display 12 for displaying a measurement result of the measuring instrument 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a load amount measurement system for a transport vehicle, and more particularly to a load amount measurement system that can be used when bulk cement or the like is loaded on a transport vehicle.

  A truck equipped with a tank is loaded with a granular material such as rose cement or wheat and transported. In order to load a granular material on a truck or other transportation vehicle, the transportation vehicle is moved to a loading facility such as a silo in which the granular material is accumulated, and the tank is provided through an opening (manhole) of a tank provided in the transportation vehicle. It is configured to pour the granular material in the silo.

  The amount of the granular material loaded on the transport vehicle is set for each transport vehicle depending on the maximum load capacity of the transport vehicle, the purchase amount specified by the purchaser, and the like. For this reason, it is required to accurately measure the amount of the granular material loaded on the transport vehicle.

  There are two methods for measuring the amount of powder particles transferred from the silo side to the transporter side: the silo side method and the transporter side measurement method. Since the amount of air contained in the granule easily changes and the density of the granule also changes, it is difficult to grasp the accurate loading amount on the silo side.

  A truck scale is used to measure the amount loaded on a transport vehicle, but the truck scale is suitable for measuring the unchanged weight after loading. It is difficult to measure changes. Moreover, if powder particles such as rose cement enter the gaps in the track scale, it may cause a failure of the measuring device. For this reason, the truck scale is installed in a place away from the loading facility, and after loading the powder and granular material, the transporter is moved to the truck scale to measure the loading amount.

  In such a measurement method, when the load is large or small, the transport vehicle must be returned to the loading facility, and the loaded powder or particles must be loaded again. The loading work was extremely complicated.

  Patent Document 1 discloses disposing a detection unit capable of measuring a load on the transport vehicle side. However, it is practically difficult to incorporate such a mechanism in all transport vehicles because of the high cost.

JP 2000-233678 A

  The present invention solves the above-described problems, can accurately grasp the amount loaded on the transport vehicle, and can reduce the increase in cost of installing the measuring equipment, and can reduce the load on the transport vehicle. Is to provide.

  In order to solve the above-described problem, an invention according to claim 1 is provided with a transport vehicle provided with a tank, a loading facility for loading a transported object in the tank, and provided on the loading facility side. A system for measuring a load on a transport vehicle, comprising: a measuring instrument for measuring a sinking amount; and a display for displaying a measurement result of the measuring instrument.

  According to a second aspect of the present invention, in the load capacity measurement system for a transport vehicle according to the first aspect, the measuring device is a displacement sensor for measuring a vertical movement amount of the tank.

  According to a third aspect of the present invention, in the load capacity measurement system for a transport vehicle according to the second aspect, the displacement sensor is either a laser sensor or a wire type sensor.

  According to a fourth aspect of the present invention, in the loading capacity measurement system for a transport vehicle according to the second or third aspect, the tank includes a plurality of manholes for loading a load, and the measuring device loads the load. The amount of vertical movement of the tank in the vicinity of the manhole being performed is measured.

  According to a fifth aspect of the present invention, in the system for measuring a load on a transport vehicle according to any one of the first to fourth aspects, the transported material is bulk cement.

  According to the invention of claim 1, a transport vehicle provided with a tank, a loading facility for loading a transported object in the tank, and a measuring device provided on the loading facility side for measuring a vehicle height subsidence amount of the transporting vehicle. And a display for displaying the measurement result of the measuring instrument, the load capacity measuring system for the transport vehicle is characterized in that there is no need to provide a special measuring device on the transport vehicle side, and the vehicle Since it is only necessary to be able to measure a high sinking amount, a simple measuring device can be used at a low cost. Moreover, since it is not a measuring device arranged below the transport vehicle, such as a truck scale, it is possible to eliminate adverse effects such as contamination by a transported material such as a granular material and failure.

  According to the invention of claim 2, since the measuring device is a displacement sensor that measures the amount of movement of the tank in the vertical direction, it is possible to measure the amount of subsidence at an arbitrary position on the upper surface of the tank of the transport vehicle. For example, it is possible to measure the vehicle height sinking amount of a transport vehicle including a tank part in the vicinity of the part where the transported goods are loaded in the tank, so that it becomes possible to more accurately grasp the loading amount of the loaded transported goods. .

  According to the invention of claim 3, since the displacement sensor is either a laser sensor or a wire type sensor, it is possible to accurately measure the amount of vehicle height settlement at low cost. In particular, in the case of a laser sensor, measurement can be performed without contact with a transport vehicle, and stable measurement can be performed over a long period of time. Further, in the case of a wire type sensor, it is possible to install a measuring device at a lower cost than a laser sensor, and it is possible to reduce the entire installation cost of the load capacity measuring system.

  According to the invention of claim 4, the tank is provided with a plurality of manholes for loading a load, and the measuring instrument is for measuring the vertical movement amount of the tank in the vicinity of the manhole where the load is being loaded. It becomes possible to measure the load on the transport vehicle more accurately.

  According to the invention according to claim 5, since the transported material is rose cement, the load capacity measurement of the present invention is possible even when the rose cement is scattered in the loading equipment and it is difficult to install a measuring device such as a truck scale. Using the system, it is possible to measure the load on the transport vehicle more accurately.

It is a figure explaining the loading operation | work to the transport vehicle by loading equipment. It is a figure explaining the outline | summary of the loading capacity measuring system to the transport vehicle of this invention. It is a figure which shows the example of the laser sensor utilized for the loading capacity measuring system to the transport vehicle of this invention. It is a figure which shows the example of the wire type sensor utilized for the loading capacity measuring system to the transport vehicle of this invention. It is a figure which shows the example of the indicator utilized for the loading capacity measurement system to the transport vehicle of this invention.

The load amount measuring system for a transport vehicle according to the present invention will be described in detail below.
FIG. 1 is a diagram illustrating a state in which a transported object such as a granular material is loaded on a transport vehicle 1 including a tank 2 in a loading facility. The transport vehicle 1 is stopped at a predetermined position of the loading facility. At the lower end of the silo 4, a discharge valve 5 that controls the discharge of the granular material accumulated in the silo 4 is provided. The granular material passed through the discharge valve is moved to the tank 2 of the transport vehicle 1 by the flexible canvas conduit 6.

  The discharge valve 5 is controlled to be opened and closed by a discharge valve driving device 7. The other end of the canvas conduit 6 is connected to a manhole (opening) 3 provided on the upper surface of the tank 2 or inserted into the tank through the manhole.

FIG. 2 is a diagram for explaining the outline of the load amount measuring system for a transport vehicle according to the present invention.
The present invention includes a transport vehicle 1 provided with a tank 2, a loading facility for loading transported goods in the tank, and a measuring instrument 10 provided on the loading facility side for measuring a vehicle height sinking amount of the transport vehicle. And a display device 12 for displaying the measurement result of the measuring device.

  The feature of the present invention is that it is possible to indirectly grasp the loading amount by measuring the sinking amount by paying attention to the fact that the loading amount on the transporting vehicle is proportional to the sinking amount of the height of the transporting vehicle. It is what. For example, in the case of a 12-ton vehicle, the amount of settlement is about 25 to 40 mm. Therefore, when the amount of settlement is measured with an accuracy of 0.1 mm, the load amount can be measured with an accuracy of about 50 kg.

  The amount of subsidence of the vehicle height is measured by the measuring instrument 10, but as shown in FIG. 2, the measuring instrument 10 is configured by a displacement sensor that measures the amount of movement of the tank 2 in the vertical direction. It is possible to measure the amount of settlement at an arbitrary position on the upper surface of the tank of the transport vehicle. For example, in the case of having a plurality of manholes 3 provided in the tank 2 for loading a transported object, the measuring instrument 10 measures the amount of vertical movement of the tank in the vicinity of the manhole 3 where the transported object is loaded. By doing so, it becomes possible to measure the loading amount of the loaded cargo more accurately.

  In addition, the measuring device 10 is not limited to one measuring device as shown in FIG. 2, and a plurality of measuring devices are used in combination, and an average value of measurement results from the plurality of measuring devices is used to determine the load capacity. It is also possible to estimate. Also, for each type of transport vehicle, set the measurement location in advance to determine which part of the transport vehicle including the upper surface of the tank is to be measured, and when the transport vehicle stops in the loading facility, It is also possible to configure to automatically move to a preset measurement location.

  3 or 4 is a diagram illustrating an example of a measuring instrument. FIG. 3 shows a laser sensor using a laser beam 21 as the measuring device 20. The laser light emitted from a part of the measuring device 20 is reflected on the surface of the tank 2 and the laser light returning to the measuring device 20 is detected, so that the distance between the measuring device 20 and the surface of the tank 2 or The relative displacement of the surface position of the tank 2 can be measured.

  In FIG. 4, a wire sensor using a wire 31 is shown as the measuring device 30. A magnet 32 that also serves as a weight is attached to the tip of the wire 21, and the magnet 32 is configured to adhere to the surface of the tank 2 by a magnetic force. When the tank 2 sinks in a state where the tip end portion (magnet 32) of the wire 31 is attached to the tank, the wire 31 is further sent from the measuring device 30. By measuring the delivery amount of this wire, the displacement amount of the tank 2 can be measured.

  In the case of the laser sensor of FIG. 3, measurement can be performed without contact with the transport vehicle, and stable measurement can be performed over a long period of time. Further, in the case of a wire type sensor, it is possible to install a measuring device at a lower cost than a laser sensor, and it is possible to reduce the entire installation cost of the load capacity measuring system.

  As shown in FIG. 2, the measurement signal measured by the measuring instrument is input to the control circuit 13, passes through a predetermined process in the control circuit 13, and is transmitted to the display 12 as a display signal indicating the amount of vehicle height subsidence. The

  FIG. 5 shows an example of the display device 12 and includes a display unit 40 that numerically displays the amount of settlement of the vehicle. The display device 12 is provided with a “start” switch 41 for instructing the start of measurement, and a “reset” switch 42 for resetting the measurement value after the measurement is completed, or for calibrating the state before loading to a subsidence amount of 0.0 mm. Is also possible.

  The indicator 12 can be arranged near the driver of the transport vehicle so that the driver can directly operate the load amount measuring system or can visually check the load amount. Of course, it is also possible to arrange the indicator in the operator room of the loading facility.

  Further, the control circuit 13 obtains information that can identify the vehicle type of the transport vehicle such as a transport vehicle license plate or an IC tag by a known means (not shown), and calculates the load amount from the measurement result from the measuring instrument 10. It is also possible to send a display signal to display the load amount on the display unit 12.

  Furthermore, when the loading amount of the granular material loaded on the transport vehicle is determined in advance, information related to the loading amount is input to the control circuit 13, the loading amount is calculated from the measured displacement amount, When the result is a set load amount, it is also possible to send a control signal for closing the valve to the discharge valve driving device 7 to operate the discharge valve 5. In addition, such information relating to the loading amount can be input using a numeric keypad (not shown) provided on the display 12.

  A transport vehicle that can suitably use the load capacity measurement system of the present invention is a transport vehicle that transports granular material such as rose cement, and in this granular material, the load capacity is accurately measured on the loading equipment side. It is difficult. In particular, rose cement reacts with moisture in the air or in the equipment and generates a hydraulic reaction, so that it is difficult to use a truck scale or the like disposed below the transport vehicle. Can be used more suitably in a loading facility that handles

  As described above, according to the present invention, it is possible to accurately grasp the amount loaded on the transport vehicle, and to measure the load amount on the transport vehicle that can reduce the increase in cost burden of installing the measurement equipment. A system can be provided.

DESCRIPTION OF SYMBOLS 1 Transport vehicle 2 Tank 3 Manhole 4 Silo 5 Discharge valve 6 Canvas conduit 7 Discharge valve drive device 10, 20, 30 Measuring device 11, 21 Laser beam 12 Display device 13 Control circuit 31 Wire 32 Weight (magnet)

Claims (5)

A transport vehicle with a tank;
Loading equipment for loading the cargo in the tank;
A measuring instrument that is provided on the loading facility side and measures the amount of vehicle height subsidence of the transport vehicle;
A load amount measuring system for a transporting vehicle, comprising: a display for displaying a measurement result of the measuring device. In the load capacity measurement system to the transport vehicle according to claim 1,
The load measuring system for a transport vehicle, wherein the measuring device is a displacement sensor for measuring a vertical movement amount of the tank. In the loading capacity measurement system to the transport vehicle according to claim 2,
The displacement sensor is any one of a laser sensor and a wire sensor, and is a system for measuring a load on a transport vehicle. In the load amount measurement system to the transport vehicle according to claim 2 or 3,
The tank is provided with a plurality of manholes for loading goods,
The measuring device measures the amount of movement of the tank in the vertical direction in the vicinity of the manhole where the load is being loaded. In the loading capacity measurement system to the transport vehicle according to any one of claims 1 to 4,
A system for measuring a load on a transport vehicle, wherein the transported material is rose cement.

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