JP3484686B2 - Axle load measurement method and axle load measurement device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axial load measuring method for measuring a vertical force applied to a road surface by each axle of a vehicle, a so-called axial load, and an axial load measuring device to which the method is applied. More specifically, the present invention relates to a shaft load measuring method and a shaft load measuring device suitable for dynamic shaft load measurement for measuring the shaft load of a running vehicle.

[0002]

2. Description of the Related Art Roads are designed and constructed in consideration of the axle weight of vehicles, and large vehicles with maximum axle weight legally prescribed by the Vehicle Restriction Ordinance in accordance with safe design rules. According to one theory, the degree of damage to the road is proportional to the n-th power of the axle load of the traveling vehicle. If n = 4, then 10
Running a t-axle will cause 10,000 times more damage than running a 1-t axle. This means that it is not appropriate to estimate the degree of road damage based on traffic volume, and suggests the need to measure the axle load of each traveling vehicle. Improving the accuracy of the dynamic axial load measuring system for measurement is a major issue.

Conventionally, there is known an axle load measuring device in which an axle load meter is buried in a road, the axle loads applied to the road surface by each axle of the vehicle are measured, and the weights of the traveling vehicles are obtained by summing the axle loads. . This axle weigher measures the total weight of the wheels connected to one axle of the vehicle. Even in the case of a vehicle with two axles (tandem structure) adjacent to each other in the front and rear, the two axles are separated to form one axle. In order to measure only the weight, the weight applied to the loading plate having a width of about 70 cm along the traveling direction of the vehicle is measured.

By the way, when a vehicle is running,
Due to shock such as acceleration and deceleration, the vehicle is running while vibrating at the resonance frequency of the whole and each part.

Therefore, the instantaneous vertical force applied to the road surface by the axle of the traveling vehicle changes as shown in FIG. That is, FIG. 5 shows a vibration wave of axial load. This Figure 5
In, the dotted line indicates the waveform corresponding to the main vibration of the traveling vehicle, and the solid line indicates the waveform in which the main vibration of the traveling vehicle is distorted by the superimposed vibration. Here, the main vibration is
Resonance of the entire vehicle.

In the axle load measurement, the vibration of the axle causes an error, and high precision measurement is extremely difficult.

[0007]

With respect to the vibration of the axle, the present inventors have installed an accelerometer on the axle of the test vehicle and set the actual national road at, for example, 30 km / h to 80 km.
It was confirmed that vibrations that can be approximated to a sine wave with a frequency of 2 Hz to 15 Hz were generated by repeating the experimental running while changing the speed in the range of km / h.

Here, assuming that the upper limit of the traveling speed of the vehicle to be measured is, for example, 60 km / h and the vibration of the axle is the vibration of the sine wave of 2 Hz to 15 Hz which is the above-mentioned measured value, In order to faithfully measure the vibration waveform of, it is necessary to be able to measure the vibration of 2Hz which is the lower limit of the vibration frequency, so 60000m / 3600s / 2Hz = 8.3
It suffices to continuously measure the axle load in the section of m. Therefore, it is necessary to continuously install a large number of axle load scales including the above-mentioned loading plate along the traveling direction of the vehicle over the section of 8.3 m. It will be good.

Then, by obtaining the center value of the measured vibration waveform, the true value of the axial load corresponding to the axial load in the stationary state can be obtained.

However, it is not practical to continuously install a large number of axle load scales over a section of 8.3 m from the viewpoint of cost, workability and maintenance after installation.

The present invention has been made in view of the above-mentioned points, and is not wasteful of continuous installation of an axial load meter, and there is no waste, and the axial load can be measured with high accuracy. An object of the present invention is to provide a method for arranging a meter and an axial load measuring device using the method.

[0012]

In order to achieve the above-mentioned object, the present invention is constructed as follows.

That is, the axial load measuring method according to the present invention of claim 1 is such that at least three or more axial load meters are provided on the vehicle traveling path.
Arrange along the vehicle running direction to measure the axle load of the running vehicle.
A that axle load measuring method, by simulation,
Original vibration waveform from partial waveform of vibration measured by the axle load meter
And the number of axle load meters required to reproduce a waveform similar to
And the number of the determined intervals that determine the uneven intervals.
And the axle load meter is placed at an arrangement interval, and the axle load is
The center value or the average value of the axle weight values measured by each of the meters
Is calculated as the axial load.

According to a second aspect of the present invention, there is provided the axial load measuring method according to the first aspect, wherein the distance is set in the vehicle traveling direction.
Therefore, they are arranged so that they become wider or narrower in sequence.

The axial load measuring method of the present invention according to claim 3 is a contract
In the configuration of claim 2, each of the axle load scales has a width direction.
Are arranged along the vehicle traveling direction and have the narrowest spacing.
The distance between the center positions of the adjoining axle load scales in the width direction is 1 m
That is all.

The axial load measuring method of the present invention according to claim 4 is a contract
In the configuration of the Requirement 3, in addition to having five axle load gauges,
The above five axle load gauges are within 9m according to the vehicle running method.
It is arranged in the measurement section.

According to a fifth aspect of the present invention, there is provided an axle load measuring device for a vehicle.
At least 3 axle weight gauges should be installed on both roads.
Place along the direction and run based on the measurement value of the axle load meter.
A shaft load measuring device that measures the shaft load of a traveling vehicle.
The vibration part measured by the axelometer by
Required to reproduce a waveform similar to the original vibration waveform from the split waveform
The number of the above-mentioned axle load scales and their arrangement intervals that are unevenly spaced.
And place the axle weight meter at the determined number and placement interval.
Of the axle load value measured by each of the axle load scales.
Calculates the center value or the average value as the axial load.
It

[0018]

[Operation] According to the axle load measuring method of the first aspect, at least three or more axle load gauges are arranged at unequal intervals in the vehicle traveling direction, so the axle load gauges are continuously arranged. There is no waste compared to the case of doing, and moreover, as in the case of evenly arranging described later,
When a large number of vibration waves having the same wavelength as the arrangement interval but different centers are measured, it is possible to measure the vibration waveform of the shaft load without the problem that all the axial load meters give the same output value.

[0020]

Here, the original vibration waveform means an actual vibration waveform of the axle load of the vehicle running on the axle load meter.

According to the axial load measuring method of the second aspect , since the intervals are arranged so as to be gradually widened or narrowed sequentially along the vehicle traveling direction, each vibration from a short wavelength vibration to a long wavelength vibration is With respect to the waveform, it is possible to reduce the vibrating portion that cannot be actually measured by the axial load meter.

According to the axial load measuring method of the third aspect , the distance between the center positions in the width direction of the adjacent axial load measuring devices at the narrowest intervals is set to 1 m or more. For each vibration waveform up to the long vibration, the number of vibrations that cannot be actually measured by the axle load meter can be reduced.

According to the axial load measuring method of the fourth aspect , since the five axial load meters are arranged in the measuring section within 9 m according to the vehicle traveling method, each of the vibration from the short wavelength to the long wavelength is measured. With respect to the vibration waveform, it is possible to further reduce the vibrating portion that cannot be actually measured by the axle load meter.

According to the axle load measuring device of the fifth aspect , at least three or more axle load gauges are arranged at unequal intervals according to the vehicle traveling method. Therefore, the axle load gauges are continuously arranged. There is less waste than in the case of doing so, and when a large number of vibration waves with different centers with wavelengths equal to the arrangement interval are measured, as in the case of evenly arranging them, all the axis weight meters output the same output value. There is no problem such as giving .

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of an axial load measuring apparatus to which the axial load meter arranging method according to the present invention is applied.

In this embodiment, the vehicle traveling path 1 is
Five axle weight detecting 2 ₁ to 2 ₅ along the running direction of the vehicle indicated by the arrow A, at unequal intervals later, and the width direction is embedded along the traveling direction of the vehicle and the output of each axle load meter 2 ₁ to 2 ₅ is adapted to be supplied to the computer 5.

[0029] The computer 5, each axle weight total of 2 _{1-2 5}
And an A / D converter 6 for A / D converting the analog data of the instantaneous load, which is the output of the above, and an arithmetic processor 7 for arithmetically processing the converted digital data to calculate the axial load as described later. There is.

The axial load meter arranging method according to the present invention is for measuring the axial load without the waste of continuously installing a large number of axial load meters as described above. Prior to the above, the basic concept of the method for arranging the axle load meter of the present invention will be described.

As described above, based on the findings of the experiments conducted by the inventors of the present invention, it is assumed that the vibration of the axle corresponding to the vibration of the axle load of the traveling vehicle is a sine wave vibration of 2 Hz to 15 Hz, and The upper limit of the traveling speed of the vehicle is, for example, 6
At 0 km / h, in order to faithfully measure all vibration waveforms, it is sufficient to continuously measure the axial load in the section of 8.3 m, but this is wasteful.

Therefore, in the present invention, instead of measuring the entire vibration waveform, a partial vibration waveform is measured, the original vibration waveform is estimated based on the measured data, and an approximated vibration waveform is reproduced. The center value of the vibration of the reproduced vibration waveform is obtained and used as the true axial load.

Therefore, by arranging the axle load meter and measuring the partial waveform of vibration, the original vibration waveform is estimated from the partial waveform measured by the axle load meter for all target vibration waveforms. Vibration can be reproduced for 2H
Various values such as the upper limit of the speed of the traveling vehicle to be measured, the maximum value of the gap that cannot be measured by the axle load meter, and the minimum overlapping measurement portion of the axle load meter, on the assumption that the vibration is from z to 15 Hz. Computer simulation was performed by setting the conditions.

As a result, when the upper limit of the speed of the traveling vehicle to be measured is set to about 60 km / h, as an example of a preferable arrangement of the axle load meter, as shown on the horizontal axis of FIG. 1 side of the axis scale ₁ of 1) 0m, 1m, 2.5
5th to 1st to 5th axle load meters 2 _{1 at} m, 4.5m, and 7.5m
It turns out that ~ ₂₅ should be placed.

[0035] In this example, the axle weight detecting 2 ₁ to 2 ₅ an effective measurement width, i.e., the measurement width valid data wheels resting completely axle load meter running vehicle is obtained for convenience 0.5m .

That is, the five _first to _fifth axle load scales 21 to ₂₅ having an effective measurement width of 0.5 m are arranged along the vehicle traveling path at a level of 0.5.
It may be arranged at intervals of 5 m, 1 m, 1.5 m and 2.5 m.

In the following, such an arrangement of the axle load meter makes the vibration waveform a sine wave vibration of 2 Hz to 15 Hz, and
It will be described with reference to FIG. 2 that when the upper limit of the traveling speed of the vehicle to be measured is set to about 60 km / h, it is effective for estimating all the original vibration waveforms.

As described above, the upper limit of the traveling speed of the vehicle is
Approximately 60 km / h, with axle vibration of 2 Hz to 15 Hz
If the vibration is a sine wave of, the lower limit of the frequency is 2
Since it is only necessary to be able to measure the vibration of Hz, 60000m / 3
It may be measured in the section of 600 s / 2 Hz = 8.3 m.
In FIG. 2, for convenience of explanation, the measurement section in which the first axle load meter 2 ₁ to the fifth axle load meter 2 ₅ are installed is 8 m.

The horizontal axis of FIG. 2 shows the positions of the axial load meters 2 ₁ to ₂₅ , and shows the distance with one side of the first axial load meter 2 ₁ as the origin. On the other hand, the vertical axis corresponds to the vibration wave of the axial load, and shows the position corresponding to each wavelength of the vibration waveform. For example, the position of 4 m on the vertical axis has a wavelength of 4 m as shown in the figure. Corresponding to the center of the vibration waveform of
The position of 8 m on the vertical axis corresponds to the center of the vibration waveform of the wavelength of 8 m as shown in the figure, and one period of each wavelength falls in the region on the left side of the oblique line B of 45 degrees.

In FIG. 2, the above-mentioned 2 Hz to 15 Hz
Vibration of sine wave of Hz, the upper limit of running speed is about 60
Although almost all of the vibration waveform of km / h can be described, only one example of the vibration waveforms of wavelengths 4 m and 8 m is shown for convenience of description. Further, axle weight detecting 2 ₁ to 2 ₅
2, the axial load is measured, but in FIG. 2, for convenience of explanation, the vertical axis indicates not the axial load but the position corresponding to each wavelength of the vibration wave corresponding to the vibration wave of the axial load. .

Assuming that the wavelength of the vibration of the axle corresponding to the vibration wave of the axle load of the traveling vehicle is, for example, 4 m, the first axle load meter 2 ₁ has a phase of 0 to π / 4 in the first cycle. The partial waveform of the corresponding vibration can be measured, and the second axial load meter 2 ₂ can measure the partial waveform of the vibration corresponding to the phase π / 2 to 3π / 4 in the first cycle. _{In 3} ,
It is possible to measure the partial waveform of the vibration corresponding to the phase 5π / 4 to 3π / 2 in the first cycle, and the fourth axial load scale 2 ₄ measures the vibration corresponding to the phase π / 4 to π / 2 in the second cycle. can measure the partial waveform, the axle weight detecting 2 ₅ of the fifth, it becomes possible to measure the partial waveform of the vibration corresponding to the phase 7π / 4~2π in the second period.

Further, since the vibration is a sine wave, the partial waveform of the vibration in the second period measured by the fourth axle load meter 2 ₄ and the fifth axle load meter 2 ₅ is 4 m, that is, 2π. It can be approximated to the partial waveforms 'and' of the vibrations of the same phase in the first cycle with the phase shifted, respectively.

Therefore, the first to fifth axle load meters 2 ₁ to ₂₅
Then, the phase in the first cycle is 0 to 3π / 4, 5π / 4 to
It becomes possible to measure the partial waveforms ',,' of the vibration corresponding to 3π / 2, 7π / 4 to 2π, and the maximum gap during the non-measurable period is the second axle weight meter 2 ₂ and the third axle weight meter. It is a part of 1 m between 2 and _3, and 25% of the wavelength ratio cannot be measured, but it is sufficient for estimating the wavelength of the original vibration waveform, and unbiased measurement data can be obtained.

Further, assuming that the wavelength of the vibration of the axle corresponding to the vibration wave of the axle load of the traveling vehicle is, for example, 8 m, the first axle load meter 2 ₁ has a phase of 0 to π / in the first cycle. 8
Can measure the partial waveform of vibration, and the second axle load meter 2 ₂ can measure the partial waveform of vibration corresponding to the phase π / 4 to 3π / 8 in the first cycle. Two _three
Can measure a partial waveform of vibration corresponding to a phase of 5π / 8 to 3π / 4 in the first cycle, and can correspond to a phase of 9π / 8 to 5π / 4 in the first cycle with the fourth axle load meter 2 _4. can measure the partial waveform of the vibration, the axle weight detecting 2 ₅ of the fifth, it becomes possible to measure the partial waveform of the vibration corresponding to the phase 15π / 8 in the first cycle.

The maximum gap in the unmeasurable section in this case is 2.5 between the fourth axle load meter 2 ₄ and the fifth axle load meter 2 _5.
It is the part of m, and the wavelength ratio of 31.25% cannot be measured, but it is sufficient for estimating the wavelength of the original vibration waveform.

Although the vibration waveforms of the wavelength 4 m and the wavelength 8 m have been described, the other vibration waveforms of the first to the fifth are also described.
The axle load meter 2 ₁ to 2 _5, so that a partial waveform needed to estimate the original vibration waveform can be measured as well.

[0047] Further, since the axle weight detecting 2 ₁ to 2 ₅ are arranged at unequal intervals, for example, as shown in FIG. 3, as in the case of arranging the axle load meter at regular intervals W, When the vibration waves V1 and V2 having the same wavelength as the arrangement interval W but different centers are measured, there is no problem that all the axial load scales give the same output values # 1 to # 4. Different output values can be obtained.

Based on the partial waveform data measured as described above, the original vibration waveform is estimated in the following manner, and a vibration waveform approximated to the original vibration waveform is reproduced to determine the center value of the vibration as the true axial load. Is calculated as

That is, the correlation between each vibration waveform assuming various wavelengths and amplitudes and the partial waveform of the vibration wave of the axial load actually measured by the _first to _fifth axial load meters 21 to ₂₅ is calculated. Then, the vibration waveform having the highest correlation is estimated as the original vibration waveform. Then, the center value of the estimated vibration of the original vibration waveform is used as the axial load to be obtained.

Even if the wavelength exceeds 8 m to some extent, the partial waveforms of vibration can be measured by the _first to _fifth axle load meters 21 to ₂₅ , so that the traveling speed of the vehicle is actually 60 km / The original vibration waveform can be estimated even if h is exceeded.

Further, the arithmetic processing for calculating the axial load based on the output of the axial load gauge arranged by the arrangement method of the present invention, the applicant of the present application previously filed Japanese Patent Application Laid-Open No. 8-7553.
The invention of Japanese Laid-Open Patent Publication No. 5-151545 can also be applied. In the invention of this earlier application, the axle load is measured after each time t ₁ , t ₂ , ... T _n after the traveling vehicle enters the axle load measurement area, and the instantaneous axle load values W ₁ , W ₂ , ... W are obtained. measure _n ,
Fixed time intervals T ₁ , T ₂ , ... T _j (j is an integer of 2 or more)
Corresponding to the set time interval T _k (k = 1 to j), from the instantaneous axial load value to (t ₁ , t) of the time interval T _{k.
1 + k} ), (t ₂ , t _{2 + k} ), ... (T _i , t _{i + k} ), a set of instantaneous axial load values (W ₁ , W _{1 + Tk} ), (W ₂ , W _{2 + Tk} ), … (W
_i , W _{i + Tk} ) and average values W _1Tk , W _2Tk ,
... W _iTk is calculated, an average value group having a one-to-one correspondence with each time interval T _k is created, and the average value having the smallest variation in the average value group is calculated from the plurality of calculated average value groups. A group is selected, and the average value of the selected average value group having the smallest variation is set as the axial load of the traveling vehicle.

[0052] Figure 4, axle weight detecting _{2 1} of the embodiment of FIG. 1
Is a plan view showing the arrangement of ~ 2 _5, in this embodiment, based on the results of the above computer simulation, the axle weight detecting 2 ₁ to 2 ₅ of the first to fifth, as follows It is arranged.

[0053] That is, the distance W1 between the center of the second axle weight detecting 2 ₂ in the width direction of the center of the first axle weight detecting 2 ₁ in the width direction 1.05 m, a second axle weight detecting 2 ₂ widthwise central and third axle weight detecting 2 ₃ 1.45m the interval W2 in the width direction of the central, third
The distance W3 between the widthwise center of the axle weigher 2 _{3 and} the widthwise center of the fourth axle weigher 2 ₄ is 2 m, and the widthwise center of the fourth axle weigher 2 ₄ and the fifth axis Distance W4 from the center of the weighing machine 2 _{5 in} the width direction
Is 3m. Each axle weight detecting 2 ₁ to 2 _5, loading plate 4 for receiving the axle weight of the vehicle in the center of the frame 3 is constituted is accommodated.

[0054] In this embodiment, the width W5 of the axle weight detecting 2 ₁ to 2 ₅ is 1.04 m, the width W6 of the loading plate 4, 0.7
The effective measurement width is 7 m, and the wheels of the traveling vehicle are completely placed on the loading plate 4 to obtain effective data, which is about 0.5 m as in the case of FIG. 2 described above. First to fifth axle weight detecting 2 ₁ to 2 ₅
Are arranged in a measurement section having a width W7 of 8.54 m along the vehicle travel route 1.

[0055] arrangement of the axle weight detecting 2 ₁ to 2 _5, the effective measurement width of the loading plate 4, when a 0.5 m, the above-described FIG. 2
Therefore, it is possible to measure a partial waveform of vibration sufficient to estimate the vibration waveform of a vehicle traveling on the vehicle travel path 1 and having a speed of about 60 km / h or less.

[0056] Incidentally, depending on the axle weight detecting 2 ₁ to 2 ₅ size, but the may change its arrangement somewhat of course,
It is preferable that the first axis weigher 2 ₁ and the center thereof in the width direction are
Distance W1 between the center of the axle weight detecting 2 ₂ in the width direction of, 1m or more, and the width W7 of the first to fifth axle weight detecting 2 ₁ to 2 ₅ is arranged measurement interval is within the 9m preferable.

[0057] Referring again to FIG. 1, the axle weight detecting 2 ₁ to 2 ₅
The analog data of the instantaneous load, which is the output of the above, is converted into digital data by the A / D conversion unit 6, and the arithmetic processing unit 7 arithmetically processes the digital data to reproduce a waveform approximate to the original vibration waveform and reproduce the vibration. The axial load, which is the central value, is calculated.

That is, in the arithmetic processing unit 7, each axis weight meter 2
The correlation between the partial waveform of the axial load vibration wave measured in ₁ to ₂₅ and the axial load vibration wave assuming various wavelengths and amplitudes is obtained, and the axial load vibration wave with the highest correlation is determined as the original vibration. It is estimated as a wave and the center value of the vibration is calculated as the axial load.

According to the arrangement of the axle load scale of this embodiment,
± 0.3 for large vehicles up to 80 km / h on actual roads
For the acceleration within G, the empirical data of ± 5% could be obtained.

In the above-described embodiment, the axial load gauges are arranged so that the intervals between them become wider along the running direction of the vehicle. However, as another embodiment of the present invention, along the running direction of the vehicle. You may arrange | position so that the space | interval of each axle weight meter may become small one by one.

The number of axial load scales of the present invention and the arrangement thereof are as follows.
Not limited to the arrangement of the above-mentioned embodiment, depending on the upper limit of the speed of the traveling vehicle to be measured and the size of the axle load meter,
It is to be determined by the computer simulation.

[0062]

As described above, according to the present invention, the following effects can be obtained.

That is, according to the present invention of claim 1, at least three or more axle load gauges are arranged at unequal intervals along the vehicle traveling direction. Compared to the above, there is less waste, and when measuring a large number of vibration waves with different centers at wavelengths that are equal to the arrangement interval, all axis weight meters give the same output value. It is possible to measure the vibration waveform of the axle load without any trouble, which allows the axle load of the traveling vehicle to be measured at a relatively low cost.

[0064]

According to the second aspect of the present invention, the intervals are arranged so as to be gradually widened or narrowed sequentially along the vehicle traveling direction. Therefore, for each vibration waveform from the short wavelength vibration to the long wavelength vibration Therefore, it is possible to estimate the entire vibration waveform by reducing the vibration part that cannot be actually measured by the axle load meter.

According to the present invention of claim 3 , the distance between the center positions in the width direction of the adjoining axial load gauges with the narrowest intervals is 1
Since it is set to m or more , it is possible to estimate the entire vibration waveform by reducing the number of vibration portions that cannot be actually measured by the shaft load meter in each vibration waveform from the short wavelength vibration to the long wavelength vibration.

According to the present invention of claim 4 , since the five axle load gauges are arranged in the measurement section within 9 m along the vehicle traveling direction, each vibration waveform from a short wavelength vibration to a long wavelength vibration is measured. With respect to, it is possible to estimate the entire vibration waveform by further reducing the vibrating portion that cannot be actually measured by the axial load meter.

According to the axle load measuring device of the fifth aspect , at least three or more axle load gauges are arranged at unequal intervals along the vehicle traveling direction. Therefore, the axle load gauges are continuously arranged. There is less waste than in the case of doing so, and when a large number of vibration waves with different centers with wavelengths equal to the arrangement interval are measured, as in the case of evenly arranging them, all the axis weight meters output the same output value. There is no problem such as giving .

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an axial load measuring device according to the present invention.

FIG. 2 is a diagram for explaining an arrangement method of the present invention.

FIG. 3 is a diagram for explaining the output of each axle load meter when the axle load meters are arranged at equal intervals.

FIG. 4 is a plan view showing an arrangement state of the axle load meter of FIG.

FIG. 5 is a diagram showing a vibration wave of an axial load.

[Explanation of symbols]

1 Vehicle runway 2 ₁ to 2 ₅ Axle weight meter 4 Loading plate 5 Computer

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01G 19/03 G01G 19/02

Claims (5)

(57) [Claims] 1. An axle load of a traveling vehicle is provided by disposing at least three or more axle load gauges along a vehicle traveling direction on a vehicle traveling path.
A method for measuring the axial load , in which the vibration measured by the axial load meter is measured by simulation.
Reproduce a waveform similar to the original vibration waveform from the partial waveform of the motion
The number of axle load scales required for
Determine the placement interval and place the axle load scale at the determined number and placement interval.
Come, the center value of the axle load value measured by each of the axle load meter, also
Is an axle load meter characterized by calculating the average value as the axle load.
Measuring method . 2. The intervals are sequentially set along a vehicle traveling direction.
The device according to claim 1, wherein the devices are arranged so as to become wider or narrower in order.
Axle load measurement method . 3. Each of the axle weight scales has a vehicle running in the width direction.
Adjacent axes with the narrowest spacing, arranged along the row direction
The distance between the center positions of the scales in the width direction shall be 1 m or more.
The axial load measuring method according to claim 2 . 4. Axial load gauges are provided, and the five
Axel weight meter in the measurement section within 9m according to the vehicle driving method
The axial load measuring method according to claim 3, which is arranged . 5. A vehicle traveling path has at least three shafts.
Place the weight scale along the vehicle running direction and measure the axle weight scale.
Axial load measuring device that measures the axial load of the traveling vehicle based on the values
And the vibration measured by the axle load scale by simulation.
Reproduce a waveform similar to the original vibration waveform from the partial waveform of the motion
The number of axle load scales required for
Determine the placement interval and place the axle load scale at the determined number and placement interval.
, The center value of the axle weight value measured by each of the axle weight systems, or
Axial load characterized by calculating the average value as the axial load
Measuring device.