JPH08189857A - Weight measuring device for traveling vehicle - Google Patents

Abstract

PURPOSE: To shorten the time for measuring the weight of a vehicle and enhance the measuring accuracy without strict restriction of the measuring place. CONSTITUTION: An upper measuring table 4 and a lower measuring table 5 are horizontally installed in an underground pit part 1 furnished in the measuring ground H of an object to be measured K in such a way that a high damping elastic member 6 is interposed in between. Gauges 3a, 3b, 3c are mounted on stays 2 installed upright in the underground pit part, and a calculating device 11 is furnished to subject the signals given by the gauges 3a, 3b, 3c to processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight measuring device for measuring the weight of a vehicle carrying cargo, materials, dust and the like while traveling.

[0002]

2. Description of the Related Art The weight of vehicles such as cargoes, materials, and debris that are carried and carried on the road or in a carrier is measured by placing them on a weighing platform at a certain weight inspection site. In this weighing, an object to be measured such as a vehicle is placed on a horizontal platform scale, and static weight is measured in a stationary state, and the weight is measured by analog or digital display.

Further, as a device for weighing a measuring object such as a vehicle while running, the applicant of the present invention supports four or more points arranged on a pedestal p having a width and a length which are equal to or larger than the dimension of the measuring object. The load of the object to be weighed is measured at the same time on each support member r having a load cell q at each point, the measured fluctuation value is arithmetically processed and only the vertical load component is added, and the weight of the object to be weighed is measured in the moving state. Japanese Patent Laid-Open No. 5-29681
No. 9 publication. (See Figure 6)

[0004]

However, according to the above-mentioned conventional measuring method, an object R such as a vehicle to be weighed at a certain weight inspection place is transferred to a weighing platform, stopped and then weighed stationary. Therefore, it takes a lot of time for weighing and is inefficient, and also requires a space for waiting a vehicle for weighing, which sometimes causes traffic congestion in the vicinity.

The latter is intended to weigh the object R to be weighed with the vehicle to be weighed while traveling at a constant speed, and the weighing time is shortened as compared with the conventional method, but the weighing platform to be weighed while traveling is used. At the time of transfer to, the impact load is applied to the weighing platform by the object to be weighed, and the impact is vertically and horizontally vibrated as impact stress. However, there is nothing to buffer the impact load or to suppress the vibration, it takes time to calculate and analyze the vibration component of the stress due to the impact, and there is a measurement error, which causes a problem in the reliability of the measurement.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and its object is to limit the measurement place when measuring a measuring object such as a vehicle without much limitation. Another object of the present invention is to provide a weight measuring device for a traveling vehicle or the like that can further shorten the measuring time and improve the measuring accuracy.

[0007]

In order to achieve the above object, a weight measuring device for a traveling vehicle or the like according to the present invention has a width and a length which are equal to or larger than the dimensions of a measuring object such as a traveling vehicle. In the underground pit part, a high damping elastic body is interposed horizontally between the upper weighing platform and the lower weighing platform in parallel with the weighing ground,
A support column that supports the weighing platform is erected in the underground pit through a measuring instrument, and a computing device that computes a signal from the measuring instrument is provided.

According to the second aspect of the present invention, the high damping elastic body is composed of a vibration-proof rubber containing a solution-polymerized SBR as a component.

[0009]

As described above, depending on the planar size of the object to be weighed, such as a vehicle, an underground pit portion is provided corresponding to an area whose width and length are equal to or greater than the dimensions of the object, and the weighing ground is provided. A high-damping elastic body is interposed between the upper weighing platform and the lower weighing platform that are installed horizontally, and the support pillars that support the lower weighing platform are erected in the underground pit through the measuring instrument and connected to the measuring instrument. With the above-described arithmetic device, when the object to be weighed is transferred to the weighing platform, the weighing platform is impacted by the tires, but the height between the upper weighing platform and the lower weighing platform is high. Damping elastic body absorbs shock and absorbs vibration due to shock early,
Attenuate, transmit the measurement data from the measuring instrument to the arithmetic device as a signal, and the arithmetic device quickly arithmetically processes the measurement data of the measurement point by the measured signal to reduce the weight of the measuring object in a short time, and Can be accurately weighed.

According to the second aspect of the present invention, the high damping elastic body interposed between the upper weighing table and the lower weighing table is composed of a vibration-proof rubber having a solution-polymerized SBR as a component. The anti-vibration rubber has excellent resilience and weather resistance, and absorbs and attenuates impact energy early by buffering the vibration caused by impact.
Therefore, it is possible to measure accurately as well as the conventional method of measuring in a stationary state, and it is possible to measure the weight while traveling,
By installing it together with the automatic reading device for the registration number of the weighing vehicle, it is possible to install it at the departure location of the loaded vehicle or on a public road without limiting the weighing location to a specific position. This makes it easier to manage the safe operation of vehicles.

[0011]

The present invention will be described below with reference to the illustrated embodiments. H is the weighing ground at the place where the weighing device is installed, and 1 is the underground pit section provided on the ground. In the weighing ground H, the upper weighing platform 4 preferably has a width and a length that are equal to or larger than the dimensions of the object K to be measured, such as a vehicle, and has a long area in the traveling direction of the vehicle. Installed at the same level as the ground H surface of the weighing place, the pillar 2 is erected in the underground pit section 1 for the same area, and the measuring instruments 3a, 3 such as load cells
b and 3c are respectively installed on the tops of the columns, and the upper weighing platform 4 and the lower weighing platform 5 are laid in layers through the measuring instrument, and high damping elasticity is provided between the upper weighing platform 4 and the lower weighing platform 5. The body 6 is evenly interposed.

As the high damping elastic body, a vibration-proof rubber containing a solution-polymerized SBR (styrene butadiene rubber) or polynorbornene rubber (trade name Nosolex) as a component is used. It excels in wear resistance, absorbs vibrations, and absorbs vibrations effectively. On the other hand, in the arithmetic unit S for calculating the measured value, the measuring instruments 3a, 3b, 3c installed at the lower part of the weighing table serve as measuring points, respectively, and are connected to the central arithmetic unit 11 via the converter 10, and the central arithmetic unit is connected. An input device 12 and a monitor 13 are connected to 11, and are further connected to an output device 14 (printer). (See FIG. 3) In the figure, numeral 15 is a cable.

The weight of the loading vehicle, which is the object K to be weighed on the weighing platform thus installed horizontally with the ground, is measured while traveling, and at the moment when the loading vehicle is transferred to the weighing platform 4, the weighing platform 4 is moved. When an impact is applied by the tire, the high damping elastic body 6 interposed between the upper weighing platform 4 and the lower weighing platform 5 receives the impact load to buffer it and further damp the vibration. The measuring instruments 3a, 3b, 3c operate to send signals of measurement data from the respective measuring points to the converter 10, convert analog signals into digital signals by the converter 10 and send them to the central processing unit 11 and measure data at the measuring points. Is calculated, and only the vertical component is averaged and calculated to weigh the weight w, which is displayed on the monitor 13 and, if necessary, the output device 14
Output the measured result from (printer). The input device 12 inputs necessary data and gives an operation command. (See FIG. 4) FIG. 5 shows a weighing graph for comparing the result with the conventional one.

A. (Two-dot chain line) is based on a conventional measurement method, and b. (Dotted line) shows the case without a vibration damping device, and c. The solid line shows the case where the high damping elastic body according to the present invention is installed. As can be seen in this graph, a. In the initial stage, a certain level is reached, but b. In, the amplitude of the vibration is large, the vibration is long, and it is slow to reach a certain level, c. Is a high damping elastic body installed, and the high damping elastic body according to the present invention is installed c.
In the graph of a, although there is some amplitude in the initial stage, a. It can be seen that it becomes a certain level at the same time as.

This is convenient for the vibration component to be small due to the highly damped elastic body, and it is convenient to collect the measurement data and average only the vertical component for calculation. The fact that a certain level is reached means that weighing can be performed in the conventional weighing time and that weighing can be performed accurately. Therefore, the weight of the object to be weighed can be weighed simply by passing over the weighing platform, and the weighing time can be shortened.

The size of the weighing platform and the position and location of the support column on which the measuring instrument is installed are not limited to those in this embodiment, but are set according to the measurement conditions.

[0017]

According to the present invention, as described above, since the high damping elastic body is interposed between the upper weighing table and the lower weighing table in the weighing table, the upper weighing table receives an impact load due to a loading vehicle or the like. However, the high-damping elastic body buffers this shock, further attenuates vibration energy, and an arithmetic unit that performs measurement arithmetic processing allows the object to be weighed, such as a loaded vehicle, to travel continuously on the weighing platform while being short-circuited. It is possible to measure on time, without requiring the waiting space of the vehicle to be measured,
It will not cause traffic congestion in the vicinity, and by installing the weighing device on a public road without limiting the installation location, it will be basic data for road maintenance and easy to manage safe operation.

According to the second aspect of the present invention, the vibration-damping rubber as a high-damping elastic object provided on the upper and lower weighing platforms has excellent impact resilience and abrasion resistance, and even if it is repeatedly used for a long time, It exerts its performance, absorbs vibration while absorbing it. In addition, by absorbing the vibration early, the calculation processing by the calculation device is performed in a short time, and it is possible to measure accurately as well as the conventional method of measuring in a stationary state, which shortens the weighing time and saves time. Saves money, improves measurement accuracy and increases reliability.

Further, the registration number and the weight of the passing vehicle can be determined at the same time by being installed together with the automatic reading device of the registration number of the weighing vehicle.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a weight measuring device for a traveling vehicle or the like according to the present invention.

FIG. 2 is a vertical cross-sectional view taken along the arrows A to A in FIG.

FIG. 3 is a block diagram of a weighing device of the present invention.

FIG. 4 is a flow chart of weighing by the weighing device.

FIG. 5 is a comparative diagram showing a conventional measurement graph and a relationship between weighing time and weight according to the present invention.

FIG. 6 is a vertical cross-sectional view of a conventional device.

[Explanation of symbols]

 K Object to be measured H Ground S Computing device 1 Underground pit section 2 Pillars 3a, 3b, 3c Measuring instrument 4 Upper weighing platform 5 Lower weighing platform 6 High damping elastic body 10 Transducer 11 Central computing unit 12 Input device 13 Monitor 14 Output device (Printer) 15 cable

Claims (2)

[Claims] 1. A high-damping elastic body is interposed horizontally between an upper weighing platform and a lower weighing platform horizontally with the weighing ground in an underground pit portion having a width and a length which are equal to or larger than the dimensions of a weighing object such as a traveling vehicle. However, a prop for supporting the weighing platform is erected in the underground pit part via a measuring instrument, and a computing device for computing a signal from the measuring instrument is provided. . 2. The weight measuring device for a traveling vehicle or the like according to claim 1, wherein the high damping elastic body is made of a vibration-proof rubber containing a solution-polymerized SBR as a component.