JP2003021553A - Deadweight measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deadweight measuring apparatus for measuring accurate dead weight at a low cost. SOLUTION: The deadweight measuring apparatus measures the deadweight of transport material of liquid, powder, etc., which are accommodated in a container 11 mounted on a vehicle 10, which retains the container 11 at a retaining position shifted from a position of center of gravity in the traveling direction of the vehicle 10 which corresponds to the center of gravity of the container 11. The measuring apparatus is installed at a measuring position on the side opposite to the retaining position with respect to the position of center of gravity in the travelling direction where a distance from the position of center of gravity is larger than a distance from the retaining position to the position of center of gravity. The measuring apparatus is equipped with a load data generating means L for generating load data which change in accordance with a load applied to the vehicle 10, a dead weight measuring means 22a for measuring the deadweight on the basis of position relation of the retaining position, the position of center of gravity and the measuring position, and load data generated by the load data generating means L, and a deadweight outputting means 22b for outputting the deadweight measured by the measuring means 22a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load weight measuring apparatus, and more particularly to a load weight measuring apparatus for measuring a load weight of a transported object such as a liquid or powder contained in a container mounted on a vehicle. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, in the transportation industry that transports raw materials such as liquids and powders from food products to industrial raw materials as transportation goods, the transportation goods manufactured at manufacturing factories are mounted on vehicles. It is stored in a container and transported. Conventional vehicles used to measure the loading weight of the cargo stored in the storage container by placing the vehicle to be measured on a platform scale commonly called Kankan, but the facility is large and the installation space is large. Therefore, since the number of platform scales that can be installed is limited and many vehicles cannot be measured, the installation cost increases.

Therefore, in recent years, there has been provided a load weight measuring device called a self-weight meter which is mounted on a vehicle itself and measures a load weight. In the conventional vehicle-mounted load weight measuring apparatus, for example, as shown in the figure for explaining the arrangement example of the load sensor in the conventional load weight measuring apparatus of FIG. A plurality of (A to F) load sensors 30 for load measurement, such as strain gauge sensors, are provided in front, rear, left and right portions of the frame and in the vicinity of the central portion.
Is attached, and the loaded weight is measured by the sum of the outputs of the load sensors 30 that are proportional to the load applied to the load sensors 30.

[0004]

However, in the above-mentioned conventional load weight measuring device, since the purpose is to measure the load in units of ton, for example, a plurality (A to F) of load sensors 30 for high loads are used. It had to be used, and had the problem of increasing the cost of the loaded weight measuring device. Further, since the load sensors 30 are used for measurement, if an error occurs in the load sensor 30, the error may be accumulated and the error in the measured load weight may increase.

Therefore, the present invention has been made in view of the above problems.
An object of the present invention is to provide a load weight measuring device that can accurately measure the load weight at low cost.

[0006]

According to a first aspect of the present invention, which has been made in order to solve the above-mentioned problems, the loaded weight measuring apparatus has a container mounted on a vehicle 10 as shown in the basic configuration diagram of FIG. A load weight measuring device for measuring a load weight of a transported object such as a liquid or a powder contained in a vehicle 11, wherein the vehicle 10 corresponds to the center of gravity of the storage container 11.
The accommodating container 11 is supported at a support position deviated from the position of the center of gravity in the traveling direction of 0, the side opposite to the support position with respect to the position of the center of gravity in the traveling direction, and the center of gravity from the supporting position. Load data generating means L provided at a measurement position where the distance from the center of gravity position is larger than the distance to the position, and generating load data that changes according to the load applied to the vehicle 10, the support position, and the center of gravity. A loaded weight measuring means 22a for measuring the loaded weight based on the position and the positional relationship between the measurement positions and the load data generated by the load data generating means L;
And a loaded weight output means 22b for outputting the loaded weight measured by the loaded weight measuring means 22a.

According to the loaded weight measuring apparatus of the present invention as set forth in claim 1, the vehicle 10 is located at a supporting position which is displaced forward or backward from the center of gravity in the traveling direction of the vehicle 10 corresponding to the center of gravity of the container 11. To support the container 11. Then, when the transported article is stored in the storage container 11,
The load data generating means L, such as a load sensor, provided on the side opposite to the support position with respect to the center of gravity position and at the measurement position where the distance from the center of gravity position is larger than the distance from the support position to the center of gravity position. The load is transmitted according to the loaded weight. Then, the loaded weight is measured by the loaded weight measuring means 22a based on the load data generated by the load data generating means L and the positional relationship between the support position, the center of gravity position and the measurement position. Then, the loaded weight is output to the display device, the communication device, etc. by the loaded weight output means 22b.

Therefore, the vehicle 10 is caused to support the storage container 11 at a support position deviated from the position of the center of gravity of the storage container 11, and on the side opposite to the support position with respect to the position of the center of gravity, and from the distance from the support position to the position of the center of gravity. Also, by setting the position where the distance from the center of gravity becomes large as the measurement position, the load applied to the support position is larger than that to the measurement position. Since the loaded weight can be measured only by the load at the measurement position from the relationship between the support position, the center of gravity position, and the positional relationship between the measurement position and the load at each position, the load data generating means is provided at the measurement position of the vehicle 10. By providing L, the storage container 11
It is possible to measure the loaded weight of the goods stored in the. Further, since the load applied to the measurement position is small, it is possible to use the load data generating means L for low load which is inexpensive and small in size, and the load data generated by this load data generating means L for low load is converted. By measuring the loaded weight, it becomes possible to measure the loaded weight more accurately.
Therefore, if the support position for supporting the storage container 11 by the vehicle 10 is displaced from the center of gravity and at least one load data generating means L is provided at the measurement position corresponding to the support position, the object to be stored in the storage container 11 will be transported. Since the loaded weight can be measured, the problem of measurement error that has occurred in the conventional device can be solved and the cost of the device can be reduced.

In order to solve the above-mentioned problems, the invention according to claim 2 is, as shown in the basic configuration diagram of FIG. 1, in the loaded weight measuring apparatus according to claim 1, wherein the load data generating means L is It is characterized in that it is detachable so as to be provided at the measurement position at least during measurement.

According to the loaded weight measuring apparatus of the present invention described in claim 2, the load data generating means L is mounted at the measurement position of the vehicle 10 at the time of measurement, and is removed when the measurement is completed. Therefore, by making the load data generating means L detachable from the measurement position of the vehicle 10, it is not necessary to provide the load data generating means L for each vehicle 10. Further, since the load applied to the measurement position is small, a commercially available weight scale or the like may be installed as the load data generating means L at the measurement position at the time of measurement. Therefore, the vehicle 1
Since it is not necessary to provide the load data generating means L for each 0, it is possible to further reduce the cost and contribute to the spread of the loaded weight measuring device.

A loading weight measuring apparatus according to a third aspect of the present invention for solving the above-mentioned problems is a storage container 11 mounted on a vehicle 10 as shown in the basic configuration diagram of FIG.
A loaded weight measuring device for measuring a loaded weight of a transported object such as a liquid or a powder contained in the storage container 11 at a gravity center position in a traveling direction of the vehicle 10 corresponding to a gravity center of the storage container 11. And supports the storage container 11
Of the load member, the load data generating means L for generating load data that changes according to the load applied to the support member 13, and the load data generating means L.
Load weight measuring means 22a for measuring the loaded weight based on the load data generated by the load, and the loaded weight measuring means 2
Loaded weight output means 2 for outputting the loaded weight measured by 2a
2b and are provided.

According to the loaded weight measuring apparatus of the present invention described in claim 3, the vehicle 10 is accommodated by the support member 13 provided at the center of gravity in the traveling direction of the vehicle 10 corresponding to the center of gravity of the vessel 10. Support 11. When the load is stored in the storage container 11 and the load corresponding to the load is transmitted to the support member 13, load data corresponding to the load is generated by the load data generating means L such as a load sensor. The loaded weight is the loaded weight measuring means 2 based on the load data.
2a. Then, the loaded weight is output to the display device, the communication device, etc. by the loaded weight output means 22b. Therefore, the support member 13 is provided at the position of the vehicle 10 corresponding to the center of gravity of the storage container 11, and the support member 1 is provided.
Since the vehicle 10 supports the storage container 11 via 3, the load data generating means L is transmitted to the support member 13 because all the loads of the transported objects stored in the storage container 11 are transmitted to the support member 13. By providing the above, it is possible to measure the load weight of the transported object accommodated in the accommodation container 11. Therefore, since it is possible to measure the loaded weight of the transported object accommodated in the accommodation container 11 only by providing the support member 13 with at least one load data generation means L, the problem of the measurement error that has occurred in the conventional device can be solved. It is possible to solve the problem, and it is possible to reduce the cost of the device.

In order to solve the above-mentioned problems, the invention according to claim 4 is, in the loaded weight measuring apparatus according to claim 1 or 3, as shown in the basic configuration diagram of FIG. Inclination signal generating means 40 for generating an inclination signal according to the inclination of 10, the vehicle 10 and the container 1
1 and a horizontal holding means 50 for holding the storage container 11 horizontally, and a determination result that the storage container 11 is not horizontal based on a tilt signal generated by the tilt signal generation means 40. Adjusting means 51 for adjusting the horizontal holding means 50 so that the storage container 11 becomes horizontal.
And are further provided.

According to the loaded weight measuring apparatus of the present invention described in claim 4, the tilt signal according to the tilt of the vehicle 10 is generated by the tilt signal generating means 40 such as an inclinometer. Then, according to the determination result that the storage container 11 is not horizontal based on the tilt signal, the horizontal holding means 50 such as the air suspension, the cylinder, and the lift are adjusted by the adjusting means 51 so that the storage container 11 becomes horizontal. It Therefore,
By providing the vehicle 10 with the horizontal holding means 50, the storage container 11 can be held horizontally. Further, when it is detected that the vehicle 10 is not horizontal on the basis of the tilt signal of the tilt signal generating means 40, the horizontal holding means 50 is adjusted by the adjusting means 51, so that the transported object in the storage container 11 is biased at the time of measurement. Can be prevented. Therefore,
The storage container 11 supported by the vehicle 10 has a horizontal holding means 50.
Since the horizontal state is maintained by the above, it is possible to prevent uneven distribution of the goods stored in the storage container 11, and it is possible to maintain an evenly distributed load on the vehicle 10, thus improving the measurement accuracy of the loaded weight. be able to.

According to a fifth aspect of the present invention, which has been made in order to solve the above-mentioned problems, the loaded weight measuring apparatus has a container for containing a transported object such as liquid or powder as shown in the basic configuration diagram of FIG. The storage container 1 at a support position displaced from the center of gravity of the vehicle 10 in the traveling direction corresponding to the center of gravity of the container 1.
1. A load weight measuring device that is detachably provided on the vehicle 10 that supports 1, and measures a load weight of the transported object, wherein the device body is a support position with respect to the center of gravity position in the traveling direction. The storage container 11 is mounted on the opposite side and at a measurement position where the distance from the center of gravity position is larger than the distance from the support position to the center of gravity position.
Are in contact with each other, and the load data generating means L for generating load data that changes according to the load applied to the apparatus main body, and the positional relationship between the supporting position, the center of gravity position, and the measuring position, and the load data generating means L. Loaded weight measuring means 22a for measuring the loaded weight based on the generated load data
And a loaded weight output means 22b for outputting the loaded weight measured by the loaded weight measuring means 22a.

According to the loaded weight measuring apparatus of the present invention described in claim 5, the apparatus main body is located on the side opposite to the supporting position with respect to the center of gravity position in the traveling direction, and from the distance from the supporting position to the center of gravity position. Is also attached to the measurement position where the distance from the center of gravity increases. Then, when the container 11 comes into contact with the main body of the apparatus, the load corresponding to the loaded weight is transmitted. Then, the loaded weight is measured by the loaded weight measuring means 22a based on the load data generated by the load data generating means L and the positional relationship between the support position, the center of gravity position and the measurement position. Then, the loaded weight is output to the display device, the communication device, etc. by the loaded weight output means 22b.
Therefore, in the vehicle 10 that supports the container 11 at the support position deviated from the position of the center of gravity of the container 11, the position of the center of gravity is more than the distance from the support position to the position of the center of gravity on the opposite side to the position of the center of gravity. The load at the measurement position where the distance from is large is smaller than the load at the support position. The loaded weight can be measured only by the load at the measurement position from the relationship between the support position, the center of gravity position, and the positional relationship between the measurement position and the load at each position.
By providing the load data generating means L to the storage container 11
It is possible to measure the loaded weight of the goods stored in the. Therefore, if at least one load data generating means L is provided on the support member 13, it is possible to measure the loaded weight of the transported object accommodated in the accommodation container 11, which causes a problem of measurement error that occurs in the conventional device. Can be eliminated, and the cost of the device can be reduced.

In order to solve the above-mentioned problems, the invention according to claim 6 is, as shown in the basic configuration diagram of FIG. 3, the loaded weight measuring device according to claim 5, wherein the loaded weight output means 22b is provided. It is characterized by further comprising display means 27 for displaying the output loaded weight.

According to the loaded weight measuring apparatus of the present invention described in claim 6, the loaded weight output by the loaded weight output means 22b is displayed on the display means 27. Therefore, the display means 2 can be attached to the load weight measuring device which is detachable from the vehicle 10.
By further providing 7, it is not necessary to provide a display device for displaying the loaded weight for each vehicle 10. Moreover, since the load applied to the measurement position is small, a commercially available scale or the like can be used. Therefore, since it is not necessary to provide a loaded weight measuring device for each vehicle 10, the loaded weight measuring device can be introduced at a low price.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a loaded weight measuring apparatus according to the present invention will be described below with reference to the drawings of FIGS.

Here, FIG. 4 is a block diagram showing a schematic configuration of the loaded weight measuring apparatus according to the first embodiment, and FIG.
6 is a top view of the vehicle of FIG. 4, FIG. 6 is a configuration diagram showing a system configuration of the loaded weight measuring device of FIG. 4, and FIG.
9 is a flowchart showing an example of an outline of processing in the loaded weight measuring device performed by the CPU of FIG. 8, FIG. 8 is a diagram for explaining the loaded weight measuring device in the second embodiment, and FIG. 9 is a loaded weight of FIG. 10 is a schematic view showing an example of the appearance of the measuring device, FIG. 10 is a sectional view at the measuring position of FIG. 8, FIG. 11 is a configuration diagram showing a system configuration of the loaded weight measuring device of FIG. 8, and FIG. It is a block diagram which shows schematic structure of the load weight measuring apparatus in 3rd Embodiment,
FIG. 13 is a sectional view at the position of the center of gravity of FIG.

[First Embodiment] In FIG. 4, 10
Indicates a vehicle such as a tank truck or a bulk truck. The carrier 12 of the vehicle 10 is a storage container 11 which is a closed container for storing a transported material such as cement, liquefied natural gas (LNG), liquid oxygen, and liquid nitrogen. It is equipped with. The accommodation container 11 is fixed to the vehicle 10 at a position P ₀ of the center of gravity of the loading platform 12 in the traveling direction of the vehicle 10 corresponding to the center of gravity G of the accommodation container 11.
Are supported by a supporting member 13 provided at a distance L ₂ shifted by the support position P ₂ in the traveling direction from.

This support member 13 is, as shown in FIG.
It has a support shaft 13a, a pair of container-side flanges 13b provided on the storage container 11, and a pair of vehicle-side flanges 13c provided on the loading platform 12. Then, the support shaft 13a by which penetrate into each container side flanges 13b and the vehicle-side flange 13c, container 11 vehicle 10 is in the support position P ₂
Will be supported. Further, a horizontal holding unit 50, which is a horizontal holding means for horizontally holding the storage container 11, is provided below the loading platform 12 of the vehicle 10. As the horizontal holding unit 50, for example, an air suspension, a cylinder or the like can be used.

In the driver's seat of the vehicle 10, in the vicinity of the storage container 11, etc., there is mounted a load weight measuring device 20 for measuring the load weight of the goods to be stored in the storage container 11. In the loaded weight measuring device 20, the position opposite to the support position P ₂ with respect to the center of gravity P ₀ in the traveling direction of the vehicle 10 (the backward direction of the vehicle 10) and from the support position P ₂ to the center of gravity position P _0. Is provided at a measurement position P ₁ of the loading platform 12 where the distance L ₁ from the center of gravity P ₀ is larger than the distance L _{2 of the} strain gauge, which generates load data that changes according to the load applied to the vehicle 10, for example, a strain gauge A load sensor (corresponding to load data generating means) 30 such as a sensor is connected.

Further, the support member 13 has a center of gravity P₀Distance from
Distance L₂Deviated support position P₂Support the container 11 with
Therefore, the front portion of the storage container 11 with the support member 13 as a boundary
And there is a difference in weight at the rear. Therefore, this weight
The storage container 11 is in an unbalanced state due to the difference in
The measurement position P of the loading platform 12₁To the load sensor 30 provided in
The load transmitted by the contact of the container 11 is small
Therefore, the measurement position P ₁The load sensor 30 installed in
A load sensor can be used.

Further, in the above-mentioned structure, the center of gravity P
_{When the} loads at ₀ , the measurement position P ₁ , and the support position P ₂ are W, W ₁ , and W ₂ , respectively, the load W corresponds to the force point, and the loads W ₁ and W ₂ correspond to the load at the fulcrum, respectively. _From the positional relationship among ₀ , the measurement position P ₁ , and the support position P ₂ , the following equation is established. W = W ₁ + W ₂ ... W ₁ / W ₂ = L ₂ / L ₁ ...

From the above formula, when the load W at the center of gravity P ₀ is measured only by the load W ₁ at the measurement position P _1, the following formula (1) is established from the formula and the relation with the formula. W = (1 + L ₁ / L ₂ ) * W ₁ (1) Therefore, only by providing the load sensor 30 at the measurement position P ₁ of the loading platform 12, the load weight of the transported object stored in the storage container 11 is measured. can do. Further, since the load measured by the load sensor 30 is small, it is possible to use, for example, a commercially available scale or the like.

Further, the loading weight measuring device 20 includes the vehicle 1
According to a tilt meter (corresponding to tilt signal generating means) 40 that generates a tilt signal according to a tilt of 0, and a determination result that the container 11 is not horizontal based on the tilt signal generated by the tilt meter 40. , An inclination adjusting section (corresponding to an adjusting means) 51 for adjusting the horizontal holding section 50 so that the storage container 11 becomes horizontal.
And are further connected. Then, when the load is measured, if the vehicle 10 is not in the horizontal state, the accommodation container 11 can be adjusted to be horizontal by the inclination adjusting portion 51, so that the accurate load weight can be measured.

The vehicle 10 is further provided with a plurality of lift devices 60 on the loading platform 12 for preventing the storage container 11 from rattling during traveling due to vibration or the like according to the traveling of the vehicle 10. Then, by fixing the storage container 11 by the lift device 60 at the start of traveling of the vehicle 10 or the like, rattling of the storage container 11 during traveling can be prevented. Note that the container 11 may be fixed with bolts, spring clamps, or the like.

When the loaded weight of the storage container 11 is measured, the lift device 60 releases the fixation of the storage container 11 to perform the measurement, and the storage member is supported by the support member 13 and the load sensor 30 during the measurement. By supporting 11, the load is transmitted only to the support member 13 and the load sensor 30.

Next, the structure of the loaded weight measuring device 20 will be described. In FIG. 6 showing the configuration of the loaded weight measuring device 20, reference numeral 21 denotes a read-only memory (ROM), and the ROM 21 stores programs, fixed data, calculation formula (1), and the like. Reference numeral 22 denotes a central processing unit (CPU), and the CPU 22 operates according to a control program stored in the ROM 21 in advance.

Reference numeral 23 denotes an electrically erasable / rewritable read-only memory (EEPROM). This EEPR
The data such as the distances L ₁ and L _{2 of} the calculation formula (1) described above is stored in the OM 23. With the configuration in which the distances L ₁ and L ₂ can be changed in this manner, the mounting position of the load sensor 30 can be set accurately, and therefore the measurement accuracy can be further improved. Reference numeral 24 denotes a readable / writable memory (RAM), and the RAM 24 has a data area for storing various data used in the process of the CPU 22 and a work area used for the process.

The CPU 22 of the loaded weight measuring device 20 has
The interface unit 25 is connected. The interface unit 25 includes the load sensor 30 and the inclinometer 4 described above.
0, the inclination adjusting part 51, etc. are connected. And CPU
22 calculates the loaded weight based on the load data input from the load sensor 30 and the calculation formula (1), and determines that the vehicle 10 is not horizontal based on the tilt signal from the inclinometer 40, The adjustment information that the storage container 11 becomes horizontal is output to the inclination adjustment unit 51.

The load weight measuring device 20 is further provided with an operating section 2
6 and a display unit 27, and the operation unit 26
The display unit 27 is connected to the CPU 22.
The operation unit 26 and the display unit 27 are arranged on the front surface of the apparatus main body, the input data generated by the operation of the operation unit 26 by the user is input to the CPU 22, and the CPU 2
In response to an instruction from 2, the display unit 27 provides the user with various displays such as a loaded weight and an alarm.

The operation unit 26 has a plurality of various key switches for inputting commands such as display switching. Note that other types of command input device and voice input device may be used.
In addition, the display unit 27 has various areas such as a loaded weight display area for displaying a loaded weight, an overload warning area for warning overload, and an unbalanced warning area for warning of unbalanced load. As the display unit 27, for example, a known display device such as a color LCD with a backlight, a 7-segment LED, and a warning light can be used.

Next, referring to the flowchart of FIG.
CP of the load weight measuring device 20 according to the first embodiment
An outline of the operation according to the present invention performed by U22 will be described.

When the CPU 22 is activated, step S1
In, the initial processing is executed to set initial values in the data area, work area, etc. of the RAM 24, and then the process proceeds to step S2. Then, in step S2, the tilt signal input from the inclinometer 40 is stored in the RAM 24 as tilt information, and then the process proceeds to step S3.

In step S3, it is determined based on the tilt information in the RAM 24 whether the container 11 is horizontal. When it is determined that the storage container 11 is not horizontal (N in step S3), adjustment information for causing the tilt adjusting unit 51 to function so that the horizontal adjusting unit 50 is in the horizontal state is generated in the RAM 24 in step S4. Then, the adjustment information is output to the tilt adjusting section 51, so that the horizontal holding section 50 is adjusted by the tilt adjusting section 51 to adjust the storage container 11 to the horizontal state, and then step S2.
Return to and perform a series of processing.

On the other hand, when it is determined in step S3 that the storage container 11 is horizontal (Y in step S3), the load data from the load sensor 30 is R in step S5.
The data is taken into the AM 24, and in step S6, the RAM
24 load data, ROM 21 calculation formula (1) and EEP
Loaded RAM is RAM based on the distance data of ROM23
24, and then the process proceeds to step S7.

In step S7, weight display data for displaying the loaded weight on the display unit 27 is generated based on the loaded weight of the RAM 24, and the weight display data is output to the display unit 27, whereby the display unit 27 is displayed. The loaded weight is displayed on, and then the process proceeds to step S8. It should be noted that processes such as overloading of the measured loaded weight, determination of unbalanced load, and the like, and accompanying alarms and the like are omitted for simplification of description.

In step S8, it is determined whether or not there is an end trigger due to a predetermined operation of the operation unit 26 or the like.
If it is determined that there is no end trigger (step S
8), the process returns to step S2, and a series of processes is repeated. On the other hand, if it is determined that the end trigger has occurred (Y in step S8), in step S9, the display stop request for stopping the display of the loaded weight on the display unit 27 is output to the display unit 27. The loaded weight display performed on the display unit 27 is stopped, and then the process ends.

From the above description, since it is measured by calculating the loaded weight in step S6 and the loaded weight is output to the display section in step S7, step S6 corresponds to the loaded weight measuring means, and step S7 corresponds to the loaded weight output means. Therefore, the CP of the loaded weight measuring device 20
U22 functions as the loaded weight measuring means and the loaded weight output means described in the claims.

Next, an example of the operation (action) of the first embodiment having the above-mentioned configuration will be described.

The vehicle 10 supports the storage container 11 at a support position P ₂ which is shifted forward from the center of gravity P ₀ in the traveling direction of the vehicle 10 corresponding to the center of gravity of the storage container 11. Then, when the transported article is stored in the storage container 11, the center of gravity P
_The side opposite to the support position P ₂ with respect to ₀ , and the support position P ₂
According to the loading weight of the transported article to the load sensor (load data generating means) 30 for a distance L ₁ from the gravity center position P ₀ than the distance L ₂ to the gravity center position P ₀ is provided to the measuring position P ₁ becomes larger from The load is transmitted. Then, based on the load data generated by the load sensor 30 and the positional relationship between the support position P ₂ , the center of gravity position P ₀ , and the measurement position P ₁ , the load weight is calculated by the CPU (load weight measurement) using the calculation formula (1). Means) 22. The loaded weight is output to the display unit (display device) 27 by the CPU (loaded weight output means) 22, so that the loaded weight is displayed on the display unit 27.

As described above, the center of gravity of the container 11
Position P₀Deviated support position P₂In the vehicle 10
11 to support the center of gravity P₀Support position P₂What is
Opposite side and support position P₂To the center of gravity P₀Distance to
L₂Center of gravity position P₀Distance from L₁The position where
The measurement position P₁And the support position P₂Is the measurement position
Setting P₁The load applied is larger than that of And support
Holding position P₂, Center of gravity P ₀, And measurement position P₁Position of
Relationship between load and load at each position (equation
) To measurement position P₁Load weight is measured only by
Therefore, the calculation of the vehicle 10 can be performed [see the calculation formula (1)].
Fixed position P₁A load sensor (load data generating means) 30
The load weight of the goods to be stored in the storage container 11 when provided
The quantity can be measured. Also, the measurement position P₁Join
Since the load to be loaded is small, it is an inexpensive and compact load sensor for low loads.
It is possible to use the service 30 and load for this low load.
The load data generated by the sensor 30 is converted to the loaded weight.
By measuring, you can measure the load weight more accurately.
It will be possible.

Therefore, the support position P _{2 at} which the vehicle 10 supports the storage container 11 is shifted from the center of gravity position P ₀ , and the support position P _{2 is obtained.}
If at least one load sensor (load data generating means) 30 is provided at the measurement position P ₁ corresponding to, it is possible to measure the loaded weight of the transported object accommodated in the accommodation container 11, and thus the conventional device is used. It is possible to solve the problem of the measurement error that has been encountered and to reduce the cost of the device.

Since the vehicle 10 is provided with the horizontal holding portion (horizontal holding means) 50, the container 11 can be held horizontally. Also, an inclinometer (inclination signal generating means)
When it is detected that the vehicle 10 is not horizontal on the basis of the tilt signal of 40, the horizontal holding section 50 is adjusted by the tilt adjusting section (adjusting means) 51, so that it is possible to prevent the transported object in the storage container 11 from being biased at the time of measurement. Can be prevented. Therefore, since the storage container 11 supported by the vehicle 10 is maintained in the horizontal state by the horizontal holding unit 50, the storage container 11
Since it is possible to prevent the uneven distribution of the load stored in the vehicle and to maintain the evenly distributed load on the vehicle 10, it is possible to improve the measurement accuracy of the loaded weight.

[Second Embodiment] In the above-described first embodiment, the load data generated by the load sensor 30 provided at the measurement position P1 of the loading platform 12 of the vehicle 10 is loaded into the loaded weight measuring device 20. Although the case of measuring the loaded weight has been described, since the load related to the measurement position P1 is small,
It is possible to measure the loaded weight using a commercially available scale or the like.

A second embodiment focusing on this point will be described with reference to the drawings of FIGS. Since the basic configuration of the vehicle 10 in the second embodiment is the same as the configuration in the first embodiment shown in FIG. 4, only the storage container 11 and the cargo bed 12 are configured in FIG. Shows. The same components as those in the first embodiment described above are designated by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described.

In the second embodiment, similarly to the first embodiment, the container 11 is fixed to the vehicle 10 by the center of gravity of the loading platform 12 in the traveling direction of the vehicle 10 corresponding to the center of gravity G of the container 11. It is supported by a support member 13 provided at a support position P ₂ which is displaced from the position P ₀ by a distance L _{2 in the} traveling direction.

The difference between the configurations of the first and second embodiments is that the loaded weight measuring device 20 is located on the opposite side of the support position P ₂ with respect to the center of gravity P ₀ in the traveling direction of the vehicle 10. backward direction), and the distance from the gravity center position P ₀ than the distance L ₂ from the supporting position P ₂ to the center of gravity position P ₀ L ₁
Is the point provided at the measurement position P ₁ of the loading platform 12 where That is, in the second embodiment, the loaded weight measuring device 20 is detachably provided at the place where the load sensor 30 is provided in the first embodiment.

The loaded weight measuring apparatus 20 according to the second embodiment is realized by using, for example, a commercially available electric scale shown in FIG. Then, by providing the load weight measuring device 20 at the measurement position P ₁ of the vehicle 10, the load weight of the transported object stored in the storage container 11 is calculated by the calculation formula (1) as in the first embodiment. Since the weight can be measured, it can be easily dealt with by modifying the weight scale to calculate the loaded weight displayed on the display unit 27 of the weight scale using the calculation formula (1). When a mechanical scale is used, this scale can be replaced with the load sensor 30 in the first embodiment, or a scale display value-loaded weight conversion table or the like can be used.

In the second embodiment, a fixing portion 12a for positioning and fixing the loaded weight measuring device 20 is provided at the measurement position P ₁ of the loading platform 12. Also, this fixed portion 1
At the position of the storage container 11 corresponding to 2a, a protrusion-shaped transmission member 11a for transmitting a load to the loaded weight measuring device 20 is provided.

Loaded weight measuring device 2 for measuring the loaded weight, etc.
When 0 is installed, an operator, a driver or the like operates the lift device 60 described in the first embodiment to store the container 11
A space in which the loaded weight measuring device 20 can be inserted is generated between the transmission member 11a and the load carrier 12, and the loaded weight measuring device 20 is fixed to the fixing portion 12a of the load carrier 12 in this state. Then, the lift device 60 is operated again to bring the transmission member 11a into contact with the loaded weight device 20.

As described above, in the second embodiment, the load weight measuring device 20 can be attached to and detached from the vehicle 10 so that it can be stored in a place where there is little vibration except when the measurement is performed. It is possible to prevent the loaded weight measuring device 20 from breaking down due to vibration of the vehicle 10 while traveling.
Further, since it is not necessary to provide the load sensor 30 for each of the plurality of vehicles 10, it is possible to contribute to the spread of the loaded weight measuring device 20.

Further, the loaded weight measuring device 20 shown in FIG.
The configuration of is the same as the ROM 21, C described in the first embodiment.
PU22, EEPROM23, RAM24, display 27
Is configured. Then, in the second embodiment, the sensor unit 28 is further included. The sensor unit 28 includes a sensor such as a pressure sensor that outputs load data corresponding to a load applied to a predetermined area, an adjusting unit that amplifies and corrects a load signal output from the sensor, and a load adjusted by the adjusting unit. The signal is configured to have a voltage / frequency conversion unit.

The CPU 22 of the loaded weight measuring device 20
The basic processing is the same as that of the first embodiment described above, except that the first embodiment measures the loaded weight based on the load data generated by the load sensor 30. On the other hand, the second embodiment is different in that the loaded weight is measured based on the load data generated by the sensor unit 28 incorporated in the loaded weight measuring device 20.

Next, an example of the operation (action) of the second embodiment having the above-mentioned configuration will be described.

The apparatus main body has a center of gravity P in the traveling direction.₀
Support position P₂On the opposite side to the support position P₂Or
Center of gravity position P₀Distance to₂Center of gravity position P₀from
Distance L ₁Measurement position P₁Be attached to. That
When the container 11 contacts the device body,
The corresponding load is transmitted. And the sensor unit (load
Load data generation means) 28 and load data
Holding position P₂, Center of gravity P₀And measurement position P₁Positional relationship
Based on and, the loaded weight is determined by the CPU (loaded weight measuring means) 2
Measured by 2. And this loading weight is CPU
(Loaded weight output means) 22 is output to the display unit 27.
As a result, the loaded weight is displayed on the display unit 27.

As described above, in the vehicle 10 that supports the storage container 11 at the support position P ₂ that is displaced from the center of gravity P ₀ of the storage container 11, the side opposite to the support position P ₂ with respect to the center of gravity P ₀ . and, the load of the measuring position P ₁ where the distance L ₁ is greater from the gravity center position P ₀ than the distance L ₂ to the supporting position or P ₂ et gravity center position P ₀ is less than the load of the support position P _1. Then, from the relationship between the positional relationship between the support position P ₂ , the center of gravity position P ₀ , and the measurement position P ₁ and the load at each position (equation, see equation), the loaded weight is measured only by the load at the measurement position P _1. Therefore, by providing the sensor unit (load data generating means) 28 on the support member 13, it is possible to measure the loaded weight of the transported object stored in the storage container 11.

Therefore, if at least one sensor unit (load data generating means) 28 is provided on the support member 13, it is possible to measure the loaded weight of the transported object accommodated in the accommodation container 11, so that the conventional apparatus can be used. The problem of measurement error that has occurred can be solved, and the cost of the device can be reduced.

Further, by additionally providing the display unit (display means) 27 in the load weight measuring device 20 which is detachable from the vehicle 10, it is not necessary to provide a display device for displaying the load weight for each vehicle 10. . Further, since the load applied to the measurement position P ₁ is small, a commercially available weight scale or the like can be used. Therefore, the loaded weight measuring device 20 is provided for each vehicle 10.
Since it is not necessary to provide the load weight measuring device 20, it is possible to introduce the loaded weight measuring device 20 at low cost.

[Third Embodiment] In the above-described first and second embodiments, the case where the vehicle 10 supports the storage container 11 at the support position P ₂ has been described. Now, another measurement method will be described with reference to the drawings of FIGS. 12 and 13. Since the basic configuration of the vehicle in the third embodiment is the same as the configuration in the first embodiment shown in FIG. 4, the same reference numerals are given to the same configurations and detailed description will be given. Are omitted and only different parts will be described.

In the third embodiment, the first and second actual
Unlike the embodiment, as shown in FIG.
Center of gravity in the traveling direction of the vehicle 10 corresponding to the center of gravity of 1
Setting P ₀The storage container 11 is supported by the storage container 11 and
The support member 13 which receives the load of
The vehicle 10 supports the storage container 11 via the member 13.
It

As described in the first embodiment, the support member 13 shown in FIG. 13 has a support shaft 13a, a pair of container-side flanges 13b provided on the container 11, and a carrier 12.
And a pair of vehicle-side flanges 13c provided on the. Then, in the third embodiment, the load sensor 3 for measuring the strain amount according to the load applied to the support shaft 13a.
0 is provided near the center of the support shaft 13. Regarding the arrangement of the load sensor 30, for example, the position where at least one load sensor 30 is installed is changed by providing it on the inner surface, the outer surface of the cylindrical load sensor 30 or in the vicinity of the left and right flanges. It doesn't matter.

Further, similarly to the first embodiment, the vehicle 1
A lift device 60 that prevents the accommodation container 11 from rattling during traveling due to vibration or the like according to traveling of 0 is provided on the platform 12 so as to be fixed in front of and behind the accommodation container 11 with respect to the traveling direction of the vehicle. And this lift device 6
By fixing the storage container 11 to 0 when the vehicle 10 starts traveling, rattling of the storage container 11 during traveling can be prevented. Note that the container 11 may be fixed with bolts, spring clamps, or the like.

Since the configuration of the loaded weight measuring device 20 in the third embodiment is the same as the configuration described in the first embodiment shown in FIG. 6, description thereof will be omitted. In addition, the outline of the processing performed by the load weight measuring device 20 is the same as that described in the above-described first embodiment (see the flowchart of FIG. 7) in the basic part.

Further, the difference is that the load sensor 30 provided at the measurement position P ₁ of the platform 12 in the first and second embodiments.
While the loaded weight is measured based on the load data generated in step 3, in the third embodiment, the load sensor 30 provided on the support shaft 13a of the support member 13 provided at the center of gravity P ₀ of the loading platform 12 is used. The difference is that the loaded weight is measured based on the generated load data.

Next, an example of the operation (action) of the third embodiment having the above-mentioned configuration will be described.

The vehicle 10 supports the container 11 by the support member 13 provided at the center of gravity P ₀ in the traveling direction of the vehicle 10 corresponding to the center of gravity of the container 10. When the load is stored in the storage container 11 and the load corresponding to the load is transmitted to the support member 13, load data corresponding to the load is generated by the load sensor (load data generating means) 30. The loaded weight is measured by the CPU (loaded weight measuring means) 22 based on the load data. Then, the loaded weight is output to the display unit (display device) 27 by the CPU (loaded weight output means) 22.

As described above, the support member 13 is provided at the position of the vehicle 10 corresponding to the position P ₀ of the center of gravity of the container 11, and the vehicle 10 receives the container 11 via the support member 13.
Since the supporting container 13 supports the
Since all the loads of the transported items stored in the storage container 11 are transmitted, it is possible to measure the loaded weight of the transported items stored in the storage container 11 by providing the support member 13 with the load sensor (load data generating means) 30. it can. Therefore, at least one load sensor (load data generating means) 30 is attached to the support member 13.
Since it is possible to measure the load weight of the transported object stored in the storage container 11 simply by providing the above, it is possible to solve the problem of the measurement error that has occurred in the conventional device and to reduce the cost of the device. You can

Since the vehicle 10 is provided with the horizontal holding portion (horizontal holding means) 50, the container 11 can be held horizontally. Also, an inclinometer (inclination signal generating means)
When it is detected that the vehicle 10 is not horizontal on the basis of the tilt signal of 40, the horizontal holding section 50 is adjusted by the tilt adjusting section (adjusting means) 51, so that it is possible to prevent the transported object in the storage container 11 from being biased at the time of measurement. Can be prevented. Therefore, since the storage container 11 supported by the vehicle 10 is maintained in the horizontal state by the horizontal holding unit 50, the storage container 11
Since it is possible to prevent the uneven distribution of the load stored in the vehicle and to maintain the evenly distributed load on the vehicle 10, it is possible to improve the measurement accuracy of the loaded weight.

In the above-described first and third embodiments, the case where the support position P ₂ is shifted forward from the center of gravity position P ₀ has been described, but the present invention is not limited to this and the support is not limited thereto. It is also possible to shift the position P ₂ to the rear of the center of gravity P ₀ , and in that case, the measurement position P ₁
Will be located in front of the center of gravity position P ₀ .

[0073]

As described above, according to the loaded weight measuring apparatus of the present invention as set forth in claim 1, the vehicle is made to support the container at a support position displaced from the center of gravity of the container,
By setting the measurement position to the opposite side of the center of gravity position from the support position and the distance from the center of gravity position is larger than the distance from the support position to the center of gravity position, the support position is the measurement position. The applied load becomes larger than that. And
Since the loaded weight can be measured only by the load at the measurement position based on the relationship between the support position, the center of gravity position, and the positional relationship between the measurement position and the load at each position, a load data generation means should be provided at the measurement position of the vehicle. It is possible to measure the load weight of the transported object stored in the storage container. Also,
Since the load applied to the measurement position is small, it is possible to use inexpensive and compact load data generation means for low loads.
By converting the load data generated by the load data generating means for the low load and measuring the loaded weight, it becomes possible to measure the loaded weight more accurately. Therefore, if the support position where the vehicle supports the storage container is shifted from the center of gravity and at least one load data generating unit is provided at the measurement position corresponding to the support position, the load weight of the transported object stored in the storage container is measured. Therefore, it is possible to solve the problem of the measurement error that has occurred in the conventional device, and it is possible to reduce the cost of the device.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described in (1), by making the load data generating means detachable from the measurement position of the vehicle, it is not necessary to provide the load data generating means for each vehicle. Further, since the load applied to the measurement position is small, a commercially available weight scale or the like may be installed as the load data generating means at the measurement position during measurement. Therefore, since it is not necessary to provide the load data generating means for each vehicle, it is possible to further reduce the cost and contribute to the spread of the loaded weight measuring device.

As described above, according to the load weight measuring apparatus of the present invention as set forth in claim 3, the support member is provided at the position of the vehicle corresponding to the position of the center of gravity of the storage container, and the vehicle is mounted via this support member. Since the container is supported, the load of all the objects to be accommodated in the container is transmitted to the support member. Therefore, the object to be accommodated in the container is provided by providing the support member with load data generating means. The load weight of can be measured. Therefore, since the load weight of the transported object accommodated in the accommodating container can be measured only by providing the supporting member with at least one load data generating means, the problem of the measurement error generated in the conventional device can be solved. And the cost of the device can be reduced.

According to the invention of claim 4, claim 1
Alternatively, in addition to the effect of the invention described in 3, the storage container can be horizontally held by providing the vehicle with the horizontal holding means. Further, when it is detected that the vehicle is not horizontal on the basis of the tilt signal of the tilt signal generation means, the horizontal holding means is adjusted by the adjusting means, so that it is possible to prevent unevenness in the conveyed objects in the storage container during measurement. it can. Therefore,
Since the storage container supported by the vehicle is maintained in the horizontal state by the horizontal holding means, it is possible to prevent the uneven distribution of the goods stored in the storage container, and it is possible to maintain an evenly distributed load on the vehicle. Thus, it is possible to improve the measurement accuracy of the loaded weight.

As described above, according to the loaded weight measuring apparatus of the present invention as defined in claim 5, in a vehicle that supports the storage container at a support position deviated from the position of the center of gravity of the storage container, it is supported with respect to the position of the center of gravity. The load on the opposite side of the position and on the measurement position where the distance from the center of gravity position is larger than the distance from the support position to the center of gravity position is smaller than the load on the support position. Since the loaded weight can be measured only by the load at the measurement position from the relationship between the support position, the center of gravity position, and the positional relationship between the measurement position and the load at each position, the support member should be provided with load data generating means. It is possible to measure the load weight of the transported object stored in the storage container. Therefore, if at least one load data generating means is provided on the support member, the loaded weight of the transported object accommodated in the accommodating container can be measured, and the problem of the measurement error that has occurred in the conventional device can be solved. Thus, there is an effect that the cost of the device can be reduced.

According to the invention of claim 6, claim 5
In addition to the effect of the invention described in (1), by further providing a display means in the load weight measuring device that is detachable from the vehicle, it is not necessary to provide a display device for displaying the load weight for each vehicle. Also, since the load applied to the measurement position is small,
A commercially available weight scale or the like can also be used. Therefore, since it is not necessary to provide the loaded weight measuring device for each vehicle, it is possible to introduce the loaded weight measuring device at a low price.

[Brief description of drawings]

FIG. 1 is a diagram showing a first basic configuration of a loaded weight measuring apparatus of the present invention.

FIG. 2 is a diagram showing a second basic configuration of the loaded weight measuring device of the present invention.

FIG. 3 is a diagram showing a third basic configuration of the loaded weight measuring device of the present invention.

FIG. 4 is a configuration diagram showing a schematic configuration of a loaded weight measuring device according to the first embodiment.

5 is a top view of the vehicle of FIG.

6 is a configuration diagram showing a system configuration of the loaded weight measuring device of FIG.

FIG. 7 is a flowchart showing an example of an outline of processing performed by the CPU shown in FIG. 6 in the loaded weight measuring device.

FIG. 8 is a diagram for explaining a loaded weight measuring device according to a second embodiment.

9 is a general view showing an example of the general appearance of the loaded weight measuring device of FIG.

10 is a cross-sectional view at the measurement position in FIG.

11 is a configuration diagram showing a system configuration of the loaded weight measuring device of FIG.

FIG. 12 is a configuration diagram showing a schematic configuration of a loaded weight measuring device according to a third embodiment.

13 is a cross-sectional view taken along the center of gravity of FIG.

FIG. 14 is a diagram for explaining an arrangement example of sensors in a conventional load weight measuring device.

[Explanation of symbols]

10 Vehicle 11 Storage Container 22a Loaded Weight Measuring Means (CPU) 22b Loaded Weight Outputting Means (CPU) 27 Displaying Means (Display) 40 Inclination Signal Generating Means (Inclinometer) 50 Horizontal Holding Means (Horizontal Holding) L Load Data Generation Means (load sensor, sensor unit)

Claims (6)

[Claims] 1. A loaded weight measuring device for measuring a loaded weight of a transported object such as a liquid or powder contained in a container mounted on a vehicle, wherein the vehicle corresponds to a center of gravity of the container. The storage container is supported at a support position displaced from the center of gravity position in the traveling direction of the vehicle, the side opposite to the support position with respect to the center of gravity position in the traveling direction, and the center of gravity position from the support position. Is provided at a measurement position where the distance from the center of gravity position is greater than the distance to, load data generating means for generating load data that changes according to the load applied to the vehicle, the support position, the center of gravity position, and A loaded weight measuring means for measuring the loaded weight based on the positional relationship between the measurement positions and the load data generated by the load data generating means; Loaded weight measurement device characterized by and a loaded weight output means for outputting the load weight was. 2. The load weight measuring device according to claim 1, wherein the load data generating means is configured to be detachable so as to be provided at the measurement position at least during measurement. 3. A loaded weight measuring device for measuring a loaded weight of a transported object such as liquid and powder contained in a container mounted on a vehicle, wherein the vehicle travels corresponding to a center of gravity of the container. A support member that supports the storage container at the center of gravity in the direction and receives the load of the storage container in a concentrated manner; and a load data generation unit that generates load data that changes according to the load applied to the support member. A load weight measuring unit that measures the load weight based on the load data generated by the load data generating unit; and a load weight output unit that outputs the load weight measured by the load weight measuring unit. Loaded weight measuring device. 4. A tilt signal generating means for generating a tilt signal according to the tilt of the vehicle; a horizontal holding means interposed between the vehicle and the storage container for horizontally holding the storage container; Adjusting means for adjusting the horizontal holding means so that the storage container becomes horizontal in accordance with a result of the determination that the storage container is not horizontal based on the tilt signal generated by the tilt signal generating means. The loaded weight measuring device according to claim 1 or 3, wherein. 5. The vehicle supporting the storage container at a support position deviated from the center of gravity position in the traveling direction of the vehicle corresponding to the center of gravity of the storage container in which a conveyed material such as liquid or powder is stored A loaded weight measuring device provided for measuring a loaded weight of the transported object, wherein the device body is on the opposite side of the supporting position with respect to the position of the center of gravity in the traveling direction, and from the supporting position to the center of gravity. A load data generation unit that is mounted at a measurement position where the distance from the center of gravity position is larger than the distance to the position, and that generates load data that changes according to the load applied to the apparatus body by abutting the container. Loaded weight measuring means for measuring the loaded weight based on the positional relationship among the supporting position, the center of gravity position, and the measuring position and the load data generated by the load data generating means. A loaded weight output device for outputting the loaded weight measured by the loaded weight measuring device; 6. The loaded weight measuring device according to claim 5, further comprising display means for displaying the loaded weight output by the loaded weight output means.