Loading Quantity Management System

Abstract

To provide a loading amount management system that is relatively inexpensive and has high measurement accuracy.SOLUTION: A loading amount management system includes: loading amount measurement means 10 that measures a loading amount of a cutting waste material 4 when the cutting waste material 4 discharged by cutting a road surface 3 with a cutting machine 2 is loaded onto a cargo handling vehicle (a truck 5) on the road surface; vehicle measurement means 20 that measures the total weight of the truck 5 including the loaded cutting waste material 4; comparison means that compares the actual weight of the cutting waste material 4 calculated by subtracting the vehicle weight of the truck 5 from the total weight and the loading amount measured by the loading amount measurement means 10; and a control device 30 that has correction means for correcting the loading amount newly measured by the loading amount measurement means 10 based on a margin of error.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a loading amount management system for managing the loading amount on the loading platform of a cargo handling vehicle.

Background Art

[0002] When grasping the loading amount when loading the cutting waste material discharged by cutting the road surface onto the cargo handling vehicle on the road surface, the loading amount was calculated from the length in the traveling direction of the cut road surface and the cutting depth. In addition, there was a method of imaging the cargo loaded on the loading platform with a three-dimensional image measuring device, measuring the volume of the cargo from the image, and calculating the cargo weight (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the method of calculating the loading amount from the length in the traveling direction of the cut road surface and the cutting depth, there was a problem that the variation in the loading amount was large and the accuracy was not good. In addition, in the method of Patent Document 1, there was a problem that the three-dimensional image measuring device was expensive and had low versatility. Furthermore, although the cargo weight was calculated by multiplying the volume by the specific gravity, since there was variation in the specific gravity of the actual cutting waste material, the accuracy was not good in some cases.

[0005] Therefore, the present invention was devised to solve the above problems, and an object thereof is to provide a loading amount management system that is relatively inexpensive and has high measurement accuracy.

Means for Solving the Problems

[0006] The first aspect of the present invention for solving the above problems is a control device including: a loading amount measuring means for measuring the loading amount of cutting waste discharged by cutting a road surface with a cutting machine when loading the cutting waste onto a cargo handling vehicle on the road surface; a vehicle measuring means for measuring the total weight of the cargo handling vehicle including the loaded cutting waste; a comparison means for comparing the actual weight of the cutting waste calculated by subtracting the vehicle weight of the cargo handling vehicle from the total weight and the loading amount measured by the loading amount measuring means; and a correction means for correcting the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount. The correction means calculates the error between the actual weight and the charged amount, adds or subtracts the error from the newly measured charged amount, or divides the actual weight by the charged amount to calculate the error ratio between the actual weight and the charged amount, multiplies the error ratio by the newly measured charged amount, and uses this as the corrected charged amount. It is a loading amount management system characterized by this.

[0007] According to the loading amount management system of the present invention, by comparing the loading amount measured by the loading amount measuring means at the cutting site with the actual weight measured by the vehicle measuring means and correcting the loading amount newly measured by the loading amount measuring means, the measurement accuracy of the loading amount of the cutting waste loaded onto the cargo handling vehicle is increased, and the loading amount can be accurately grasped. Therefore, the cutting waste can be loaded onto the cargo handling vehicle at a weight close to the loading capacity, and efficient transportation without waste can be performed. Since the measurement accuracy can be improved without using a three-dimensional image measurement device as in the prior art, a loading amount management system can be obtained at low cost.

[0008] In the loading amount management system, it is preferable that the loading amount measuring means includes a 2D measurement range sensor for measuring the volume of the cutting waste on the belt conveyor of the cutting machine, and a calculation means for calculating the loading amount of the cutting waste based on a value obtained by multiplying the measured volume of the cutting waste by the unit volume weight of the cutting waste input in advance. According to such a configuration, the loading amount measuring means can be manufactured at a lower cost than a three-dimensional image measurement device.

[0009] Further, in the loading amount management system, it is preferable that the loading amount measuring means includes a conveyor scale for continuously measuring the weight of the cutting waste on the belt conveyor of the cutting machine. According to such a configuration, the loading amount measuring means can be manufactured at a lower cost than a three-dimensional image measurement device.

[0010] Furthermore, in the loading amount management system, it is preferable that the loading amount measuring means is arranged at the cutting site where the cutting waste is cut, and the vehicle measuring means is arranged at the factory where the cutting waste is processed. According to such a configuration, at the cutting site, the cutting waste can be loaded onto the transport vehicle with the corrected and accurate loading amount.

[0011] Also, in the loading amount management system, it is preferable that the control device is provided in a server on a cloud service, and in the server, the actual weight and the loading amount are compared, and the loading amount newly measured by the loading amount measuring means is corrected. According to such a configuration, data at two distant locations can be easily managed.

[0012] A second aspect of the present invention for solving the above problems is a loading amount management system including a control device having a loading amount measuring means for measuring the loading amount of cutting waste when loading the cutting waste discharged by cutting the road surface with a cutting machine onto a transport vehicle on the road surface, a vehicle measuring means for measuring the total weight of the transport vehicle including the loaded cutting waste, a comparison means for comparing the actual weight of the cutting waste calculated by subtracting the vehicle weight of the transport vehicle from the total weight and the loading amount measured by the loading amount measuring means, and a correction means for correcting the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount. The correction means calculates the error between the actual weight and the charged amount, adds or subtracts the error from the newly measured charged amount, or divides the actual weight by the charged amount to calculate the error ratio between the actual weight and the charged amount, multiplies the error ratio by the newly measured charged amount, and uses this as the corrected charged amount. The loading amount measuring means includes a first sensor for measuring the road surface height before cutting, a second sensor for measuring the cutting surface height after cutting, continuously calculates the cutting cross-sectional area by subtracting the cutting surface height from the road surface height, calculates the cutting volume by integrating the cutting cross-sectional area, and calculates the loading amount of the cutting waste based on a value obtained by multiplying the cutting volume by the unit volume weight of the cutting waste pre-input to the cutting volume.

[0013] According to the loading amount management system of the present invention, by comparing the loading amount measured by the loading amount measuring means at the cutting site with the actual weight measured by the vehicle measuring means, and correcting the newly measured loading amount by the loading amount measuring means, the measurement accuracy of the loading amount of the cutting waste loaded onto the handling vehicle is improved, and the loading amount can be accurately grasped. Therefore, the cutting waste can be loaded onto the handling vehicle at a weight close to the loading capacity, and efficient transportation without waste can be performed. Since the measurement accuracy can be improved without using a three-dimensional image measuring device as in the prior art, a loading amount management system can be obtained at low cost. Further, according to the loading amount measuring means having the above configuration, the cutting volume can be accurately calculated.

[0014] In the loading amount management system, it is preferable that the loading amount measuring means is arranged at the cutting site where the cutting waste is cut, and the vehicle measuring means is arranged at the factory where the cutting waste is processed. According to such a configuration, at the cutting site, the cutting waste can be loaded onto the handling vehicle with the corrected and accurate loading amount.

[0015] Further, in the loading amount management system, it is preferable that the control device is provided in a server on a cloud service, and in the server, the comparison between the actual weight and the loading amount is performed, and the correction of the newly measured loading amount by the loading amount measuring means is performed. According to such a configuration, data at two distant locations can be easily managed.

[0016] A third aspect of the present invention for solving the above problems is a loading amount management system including: a loading amount measuring means for measuring the loading amount of cutting waste discharged by cutting a road surface with a cutting machine and loaded onto a handling vehicle on the road surface; a vehicle measuring means for measuring the total weight of the handling vehicle including the loaded cutting waste; a comparison means for comparing the actual weight of the cutting waste calculated by subtracting the vehicle weight of the handling vehicle from the total weight with the loading amount measured by the loading amount measuring means; and a control device having a correction means for correcting the newly measured loading amount by the loading amount measuring means based on the error between the actual weight and the loading amount. The correction means calculates the error between the actual weight and the charged amount, adds or subtracts the error from the newly measured charged amount, or divides the actual weight by the charged amount to calculate the error ratio between the actual weight and the charged amount, multiplies the error ratio by the newly measured charged amount, and uses this as the corrected charged amount. The loading amount measuring means includes a cutting width detecting device for detecting the cutting width, a cutting depth detecting device for detecting the cutting depth, a cutting distance detecting device for detecting the cutting distance, and a calculating means for calculating the cutting volume by multiplying the cutting width, the cutting depth, and the cutting distance, and calculating the loading amount of the cutting waste based on a value obtained by multiplying the calculated cutting volume by the unit volume weight of the cutting waste input in advance. It is characterized by this.

[0017] According to the loading amount management system of the present invention, since the cutting width is detected by the cutting width detecting device, the cutting depth is detected by the cutting depth detecting device, and the cutting distance is detected by the cutting distance detecting device, the measurement accuracy of the loading amount of the cutting waste loaded on the handling vehicle is improved, and the loading amount can be accurately grasped. Therefore, the cutting waste can be loaded on the handling vehicle at a weight close to the loading capacity, and efficient transportation without waste can be performed. Further, according to the loading amount measuring means having the above configuration, the cutting volume can be accurately calculated.

[0018] In the loading amount management system, it is preferable that the cutting width detecting device includes a laser rangefinder provided at the upper part of one end in the width direction of the cutting drum, and calculates the cutting width from the length of the hypotenuse from the upper part of one end of the cutting drum measured by the laser rangefinder to the end of the cutting surface. According to such a configuration, the cutting width can be accurately calculated.

[0019] In the loading amount management system, it is preferable that the cutting width detecting device includes a slide plate that is movable along the width direction of the cutting drum and abuts on the end of the cutting surface before cutting from the side of the cut road surface, and a laser rangefinder that measures the distance between one end of the cutting drum and the slide plate, and calculates the cutting width by subtracting the distance between one end of the cutting drum and the slide plate from the width dimension of the cutting drum. According to such a configuration, the cutting width can be accurately calculated.

[0020] In the loading amount management system, the cutting width detection device preferably includes a step detection unit in which a plurality of rotating pieces whose tip portions abut on the surface of the road surface that has been cut or the surface of the cutting surface before cutting are arranged in parallel along the width direction of the cutting drum, and calculates the cutting width from the position of the step portion between the cut road surface detected by the step detection unit and the cutting surface before cutting. According to such a configuration, the cutting width can be accurately calculated.

[0021] In the loading amount management system, the cutting depth detection device preferably includes a lifting member that moves on the cutting surface after cutting and a laser distance meter that measures the height of the lifting member, and calculates the cutting depth by comparing the reference height when the lifting member is located on the cutting surface before cutting with the height of the lifting member formed by the laser distance meter. According to such a configuration, the cutting depth can be accurately calculated.

[0022] In the loading amount management system, the cutting distance detection device preferably includes a rotary encoder that abuts on the outer peripheral surface of the wheel of the cutting machine. According to such a configuration, the cutting distance can be accurately calculated.

[0023] In the loading amount management system, the cutting distance detection device preferably includes a laser sensor that faces the outer peripheral surface of the wheel of the cutting machine, and calculates the cutting distance from the number of grooves in the tread of the wheel detected by the laser sensor. According to such a configuration, the cutting distance can be accurately calculated.

Effect of the Invention

[0024] According to the loading amount management system according to the present invention, it can be manufactured at a relatively low cost and the measurement accuracy can be improved.

Brief Description of the Drawings

[0025]

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Embodiments for Carrying Out the Invention

[0026] The loading amount management system according to the first embodiment of the present invention will be described in detail with reference to the accompanying drawings. The loading amount management system according to this embodiment is for improving the measurement accuracy of the loading amount when loading the cutting waste material discharged by cutting the asphalt road surface into a freight vehicle (truck). The freight vehicle loaded with the cutting waste material transports the cutting waste material to the waste material treatment plant. As shown in FIG. 1, the loading amount management system 1 includes a loading amount measuring means 10, a vehicle measuring means 20, and a control device 30.

[0027] The loading amount measuring means 10 measures the loading amount of the cutting waste material 4 when loading the cutting waste material 4 discharged by cutting the asphalt road surface 3 with the cutting machine 2 onto the truck 5 on the road surface. The cutting machine 2 includes a road surface cutting portion 6 and a belt conveyor 7 for loading the cutting waste material 4 onto the truck 5. The loading amount measuring means 10 is installed on the cutting machine 2 and is provided at the cutting site where the cutting of the cutting waste material 4 is performed. In this embodiment, the loading amount measuring means 10 is composed of two types of measuring means, a first measuring means 11 and a second measuring means 12.

[0028] The first measurement means 11 includes a 2D measurement range sensor 13 and a calculation means. The 2D measurement range sensor 13 measures the volume of the cutting waste material on the belt conveyor of the cutting machine. The 2D measurement range sensor 13 is disposed above the belt conveyor 7, and discriminates the surface shapes of the sensor body and the measurement object (cutting waste material 4) by receiving the laser that is scanned on the cutting waste material 4 on the belt conveyor 7 and reflected. Here, since the shape of the belt of the belt conveyor 7 is known in advance, the cross-sectional area of the cutting waste material 4 can be measured. The 2D measurement range sensor 13 continuously measures the cross-sectional area of the cutting waste material 4 by continuously discriminating the surface shape at a high speed scan. The volume of the cutting waste material 4 can be measured from these continuously measured cross-sectional areas and the running length of the belt conveyor 7. The calculation means is housed in the control computer of a control box (not shown) mounted on the cutting machine 2. In the calculation means, the volume of the cutting waste material 4 measured by the 2D measurement range sensor 13 is multiplied by the unit volume weight of the cutting waste material 4 to calculate the passing weight of the cutting waste material 4 that has passed through the measurement position below the 2D measurement range sensor 13. The unit volume weight of the cutting waste material 4 is appropriately determined according to various conditions such as the material of the asphalt road surface 3 to be cut, the cutting depth, and the weather, and is input to the calculation means in advance. The calculation means calculates the loading amount of the cutting waste material 4 based on the value (passing weight) obtained by multiplying the measured volume of the cutting waste material 4 by the unit volume weight of the cutting waste material 4 input in advance. Specifically, the loading amount (weight) onto the truck 5 is calculated by subtracting the unloaded weight of the cutting waste material 4 on the belt downstream of the measurement position from the passing weight.

[0029] The second measuring means 12 is provided with a conveyor scale 15. The conveyor scale 15 is disposed below the belt of the belt conveyor 7 through which the cutting waste 4 is conveyed, and continuously measures the weight of the cutting waste 4 on the belt of the belt conveyor 7. Specifically, the conveyor scale 15 includes a load cell and a speed sensor. When the cutting waste 4 on the belt passes through a load detection part provided at a predetermined position by the load cell, a weight value per unit length is continuously detected. On the other hand, the speed of the belt is detected by the speed sensor, and the instantaneous flow rate is calculated by multiplying the weight value by the belt speed. By integrating this instantaneous flow rate, the cumulative loading amount is calculated. Also in the second measuring means 12, the loading amount (weight) onto the truck 5 is calculated by subtracting the unloaded weight of the cutting waste 4 on the belt downstream of the measurement position from the cumulative loading amount.

[0030] The cutting waste 4 is loaded onto the truck 5 based on the average value of the first loading amount measured by the first measuring means 11 and the second loading amount measured by the second measuring means 12. The loading amount of the cutting waste 4 is set within a range not exceeding the maximum loading amount of the truck 5.

[0031] The vehicle measuring means 20 measures the total weight of the truck 5 including the loaded cutting waste 4, and is constituted by a truck scale 21. The vehicle measuring means 20 is disposed at the factory 8 where the cutting waste is processed. After the total weight of the truck 5 is measured by the vehicle measuring means 20, the cutting waste 4 is unloaded.

[0032] The control device 30 consists of a program provided in the server 9a on the cloud service 9. In the server 9a, it compares the actual weight with the loaded quantity and corrects the loaded quantity newly measured by the loaded quantity measuring means 10. The loaded quantity measuring means 10 is provided with a transmitting means 31 for transmitting various data such as actual weight data and vehicle identification number to the control device 30. The vehicle measuring means 20 is provided with a transmitting means 32 for transmitting various data such as the total vehicle weight and vehicle identification number to the control device 30. The transmitting means 31 and 32 consist of a tablet terminal or a PC and transmit to the control device 30 by inputting various data. Note that the transmitting means 31 and 32 may automatically transmit the measurement data of the loaded quantity measuring means 10 and the vehicle measuring means 20. In the server 9a, the total vehicle weight, maximum load capacity, loaded quantity data, and actual weight data are stored for each vehicle identification number.

[0033] The control device 30 includes a comparing means and a correcting means. The comparing means calculates the actual weight of the cutting waste 4 from the total weight of the truck 5 measured by the vehicle measuring means 20, and compares the calculated actual weight with the loaded quantity measured by the loaded quantity measuring means 10. Specifically, in the comparing means, the actual weight of the cutting waste 4 is calculated by subtracting the vehicle weight of the truck 5 from the total weight of the truck 5. The vehicle weight of the truck 5 is input in advance and recognized from the vehicle identification number. Then, in the comparing means, the loaded quantity measured by the loaded quantity measuring means 10 is compared with the corresponding actual weight to calculate an error. The loaded quantity to be compared is the average value of the first loaded quantity measured by the first measuring means 11 and the second loaded quantity measured by the second measuring means 12.

[0034] Note that in this embodiment, the average value of the first loaded quantity and the second loaded quantity is compared with the actual weight, but it is not limited thereto. The first loaded quantity may be compared with the actual weight, and the second loaded quantity may be compared with the actual weight, and then the average value of the respective errors may be calculated.

[0035] The correction means corrects the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount. Specifically, the error between the actual weight and the loading amount is calculated, and the calculated error is added to or subtracted from the loading amount measured by the loading amount measuring means 10. In this case, when the actual weight is larger, the error is added to the measured loading amount (the average value of the new first loading amount and the second loading amount), and this is used as the corrected loading amount. Based on this corrected loading amount, the loading amount of the cutting waste 4 onto the truck 5 is determined. Also, when the actual weight is smaller, the error is subtracted from the measured loading amount (the average value of the new first loading amount and the second loading amount), and this is used as the corrected loading amount. Based on this corrected loading amount, the loading amount of the cutting waste 4 onto the truck 5 is determined. Then, based on this corrected loading amount, the loading amount of the cutting waste 4 onto the truck 5 is determined. The loading amount onto the truck 5 is a value obtained by multiplying the maximum loading capacity by a predetermined ratio (safety factor). The predetermined ratio (safety factor) is set to, for example, 90% so that the loading amount and the actual weight do not exceed the maximum loading capacity. When the correction is repeated and the loading amount approaches the actual weight, the predetermined ratio (safety factor) can be increased.

[0036] Note that the correction method is not limited to this, and the error ratio between the actual weight and the loading amount may be calculated by dividing the actual weight by the loading amount. In this case, the error ratio is multiplied by the newly measured loading amount (the average value of the new first loading amount and the second loading amount), and this is used as the corrected loading amount.

[0037] Hereinafter, with reference to FIG. 2, the procedure for correcting the loading amount performed using the loading amount management system having the above configuration will be described. In such a cutting and conveying operation, first, the asphalt road surface 3 is cut by the cutting machine 2 (S1). At the same time, the correction value α is confirmed (S2). Here, it is confirmed whether the correction value α has been calculated in the previous transportation. The correction value α is represented by the absolute error (the value obtained by subtracting the measured weight A from the actual weight A': A' - A) or the relative error (the value obtained by dividing the absolute error by the measured weight A: (A' - A) / A). If the correction value α has already been calculated, the loading amount is corrected in the following steps.

[0038] Next, when loading the cutting waste 4 onto the truck 5, the loading amount measuring means 10 measures the loading amount of the cutting waste 4 passing through the belt conveyor 7 (S3). At this time, a corrected loading amount A considering the correction value α is calculated. When the correction value α is an absolute error, the corrected loading amount is a value obtained by adding the correction value α to the measured weight. When the correction value α is a relative error, it is a value obtained by adding the value obtained by multiplying the measured weight by the correction value α (absolute error) and the measured weight. In the present embodiment, the loading amount is measured using the first measuring means 11 including the 2D measurement range sensor 13 and the calculation means, and the second measuring means 12 including the conveyor scale 15. Since both the 2D measurement range sensor 13 and the conveyor scale 15 are less expensive than the three-dimensional image measuring device conventionally used, the manufacturing cost can be suppressed. Further, since the average value of the measured loading amounts is calculated using a plurality of measuring means, the measurement accuracy is improved.

[0039] Thereafter, based on the average value of the loading amounts, the cutting waste 4 below the regulated weight (maximum loading capacity) is loaded onto the truck 5 and transported to the waste treatment plant 8 (S4). The loading amount onto the truck 5 is a numerical value obtained by multiplying the maximum loading capacity of the truck 5 by a predetermined ratio (safety factor). In the initial transportation, since the loading amount is not corrected, the safety factor is set to a relatively small value so that the loading amount onto the truck 5 does not exceed the maximum loading capacity.

[0040] When loading the cutting waste 4, the cutting operator inputs the vehicle number (type) of the truck 5 into the control computer of the control box, and the maximum loading capacity of the truck 5 is specified. Based on the maximum loading capacity, the remaining loading amount of the cutting waste 4 is indicated to the cutting operator. As the indication method, a rotating light or sound is used. When using a rotating light, for example, the color of the rotating light is usually blue, yellow when there is 1 ton left, and red when a predetermined loading amount is reached. When using sound, for example, it is usually silent, announces "1 ton left" when there is 1 ton left, and announces "stop, please" when a predetermined loading amount is reached.

[0041] Next, the vehicle measuring means 20 provided in the processing plant 8 measures the gross weight of the truck 5 (S5). Since the vehicle measuring means 20 uses a truck scale 21, the gross weight can be easily measured by simply parking the truck 5 on the vehicle measuring means 20. Then, the vehicle weight is subtracted from the gross weight to calculate the actual weight A' of the cutting waste 4 (S6). At this time, by inputting the type of the truck 5, the vehicle weight of the corresponding truck 5 is subtracted. Thereafter, the average value of the loading amount measured by the loading amount measuring means 10 is compared with the corresponding actual weight to calculate an error (S7). From this error, a correction value α is determined (S8). The correction value α is calculated by subtracting the measured weight A from the actual weight A' in the case of an absolute error, and by dividing the absolute error by the measured weight A in the case of a relative error.

[0042] Here, when there is an error, the calculated correction value α is added to the newly measured loading amount by the loading amount measuring means 10 for correction. As the transportation operations are sequentially performed, the correction is repeated and the measurement accuracy of the loading amount is improved, so that the value of the safety factor multiplied by the maximum loading capacity of the truck 5 can be gradually increased. As a result, the loading amount on the truck 5 can be made closer to the maximum loading capacity within a range not exceeding the maximum loading capacity. Note that no correction is performed when there is no error between the loading amount and the actual weight.

[0043] According to the loading amount management system 1 of the present embodiment, the error is calculated by comparing the loading amount measured by the loading amount measuring means 10 with the actual weight measured by the vehicle measuring means 20, and the loading amount newly measured by the loading amount measuring means 10 is corrected based on the error, so that the measurement accuracy of the loading amount of the cutting waste 4 loaded on the truck 5 is improved. Therefore, the loading amount can be accurately grasped, and the cutting waste 4 can be loaded on the truck 5 at a weight close to the maximum loading capacity within a range not exceeding the maximum loading capacity. Thus, efficient transportation without waste can be performed.

[0044] In addition, in the loading amount management system 1 of the present embodiment, since the loading amount measuring means 10 includes the first measuring means 11 having a 2D measurement range sensor and a calculation means, and the second measuring means 12 having a conveyor scale 15, the measurement accuracy can be further improved. Further, both the first measuring means 11 and the second measuring means 12 are less expensive than a three-dimensional image measuring device. That is, by using such a loading amount management system 1, the measurement accuracy can be improved without using an expensive three-dimensional image measuring device as in the prior art, so that a loading amount management system can be obtained at low cost.

[0045] Furthermore, in the present embodiment, since the loading amount measuring means 10 is arranged at the cutting site where the cutting waste material 4 is cut, and the vehicle measuring means 20 is arranged at the factory 8 where the cutting waste material 4 is processed, at the cutting site, the cutting waste material 4 can be loaded onto the truck 5 with the corrected and accurate loading amount.

[0046] Also, in the present embodiment, the control device 30 is provided in the server 9a on the cloud service 9, and various data are also stored in the server 9a, so that the data acquired at two separate locations (the cutting site and the processing factory) can be easily managed. Also, information can be shared with other cutting machines.

[0047] As described above, the embodiments for implementing the present invention have been described. However, the present invention is not intended to be limited to the above embodiments, and appropriate design changes can be made without departing from the spirit of the present invention. For example, in the first embodiment, the loading amount measuring means 10 is composed of two types of measuring means, the first measuring means 11 having a 2D measurement range sensor and a calculation means, and the second measuring means 12 having a conveyor scale 15, but it is not limited thereto. For example, either one of the first measuring means 11 and the second measuring means 12 may be used, or other measuring means may be further added, or other measuring means may be used alone or in combination.

[0048] In addition, in the first embodiment, the control device 30 is provided in the server 9a on the cloud service 9, but it is not limited thereto. The control device 30 may be configured by the control computer of the control box mounted on the cutting machine 2. In this case, various data such as the vehicle identification number, the total vehicle weight, the maximum load capacity, the loaded amount data, and the actual weight data may be stored in the server 9a on the cloud service 9 or may be stored in the control computer.

[0049] In addition, in the first embodiment, the vehicle measurement means 20 is installed in the processing plant 8, but it is not limited thereto. It may be provided at a location other than the processing plant 8, such as in the middle of the route from the cutting site to the processing plant 8 or near the cutting machine 2 at the cutting site.

[0050] Next, the loading amount management system according to the second embodiment of the present invention will be described in detail with reference to the accompanying drawings. The loading amount management system according to this embodiment is for improving the measurement accuracy of the loading amount when loading the cutting waste material discharged by cutting the asphalt road surface into a loading vehicle (truck). The loading vehicle loaded with the cutting waste material transports the cutting waste material to the waste material processing plant. As shown in FIG. 3, the loading amount management system 101 includes a loading amount measurement means 110, a vehicle measurement means 120, and a control device 130.

[0051] The loading amount measurement means 110 measures the loading amount of the cutting waste material 104 discharged by cutting the asphalt road surface 103 with the cutting machine 102 onto the truck 5. The cutting machine 102 includes a road surface cutting part 106 and a belt conveyor 107 for loading the cutting waste material 104 onto the truck 105. The loading amount measurement means 110 is installed in the cutting machine 102 and is provided at the cutting site where the cutting waste material 104 is cut.

[0052] In this embodiment, the loading amount measuring means 110 calculates the cutting weight from the volume of the cut waste material 104, and subtracts the waste material 104 on the belt conveyor 107 (the portion that has been cut but not loaded onto the truck 105) from the cutting weight to calculate the loading amount. The loading amount measuring means 110 includes a first sensor 111, a second sensor 112, and a calculation means 113.

[0053] As also shown in FIG. 4(a), the first sensor 111 measures the road surface height before cutting and is provided in front of the road surface cutting portion 106. The first sensor 111 is constituted by, for example, a laser sensor and is disposed facing the asphalt road surface 103 at the lower part of the vehicle body frame in front of the road surface cutting portion 106. The first sensor 111 irradiates the asphalt road surface 103 with light beams radially from the sensor head and receives the reflected beams reflected by the asphalt road surface 103. The first sensor 111 measures the time from the irradiation of the light beam to the reception of the light beam, and multiplies the time by the speed of light and divides the result by two to measure the distance from the first sensor 111 to the asphalt road surface 103. The first sensor 111 measures the distance between the sensor and the road surface within the cutting width W of the road surface cutting portion 106 to obtain the road surface height with respect to the vehicle body of the cutting machine, and obtains the surface shape of the plane including the cutting width W. The first sensor 111 moves in the traveling direction together with the cutting machine as the road surface is cut. At this time, the first sensor 111 can continuously obtain the road surface height by measuring the distance between the sensor and the road surface at a predetermined time pitch (see FIG. 4(b)).

[0054] The second sensor 112 measures the height of the cut surface after cutting and is provided behind the road surface cutting part 106. The second sensor 112 is composed of the same laser sensor as the first sensor 111 and is arranged facing the cut surface 103a cut by the road surface cutting part 106 at the lower part of the vehicle body frame behind the road surface cutting part 106. The second sensor 112 irradiates the cut surface 103a with light beams radially from the sensor head and receives the reflected beams reflected by the cut surface 103a. The second sensor 112 measures the time from the irradiation of the light beam to the reception, and multiplies the time by the speed of light and divides by two to measure the distance from the second sensor 112 to the cut surface 103a. The second sensor 112 measures the distance between the sensor and the cut surface within the range of the cutting width W of the road surface cutting part 106, thereby obtaining the height of the cut surface with respect to the vehicle body of the cutting machine, and obtaining the surface shapes of the cutting bottom surface and the cutting side surface of the cutting width W. Similar to the first sensor 111, the second sensor 112 moves in the traveling direction together with the cutting machine as the road surface is cut. At this time, the second sensor 112 can continuously obtain the height of the cut surface by measuring the distance between the sensor and the cut surface at a predetermined time pitch (see (c) of FIG. 4).

[0055] The calculating means 113 consists of a program stored in a control computer of a control box mounted on the cutting machine 102, a tablet terminal or a PC, calculates the cutting cross-sectional area and the cutting volume, calculates the cutting weight of the cutting waste 104, and calculates the loading amount of the cutting waste 104 based on this value. The cutting cross-sectional area is calculated by subtracting the height of the cut surface measured by the second sensor 112 (see (c) of FIG. 4) from the road surface height measured by the first sensor 111 (see (b) of FIG. 4). The cutting cross-sectional area is continuously calculated at a predetermined time pitch. The cutting volume is calculated by integrating the cutting cross-sectional area (multiplying the cutting cross-sectional area by the cutting length L (see (a) of FIG. 4)). The cutting weight is calculated by multiplying the calculated cutting volume by the unit volume weight of the cutting waste 104 pre-input to the calculating means 113.

[0056] The cut waste material 104 is conveyed via the belt conveyor 107 after being cut by the road surface cutting unit 6 and then loaded onto the truck 105. Therefore, the amount loaded onto the truck 105 needs to subtract the weight of the cut waste material 104 on the belt conveyor 107 (unloaded weight) from the calculated cutting weight. For this reason, the calculation means 113 subtracts the weight of the cut waste material 104 on the belt conveyor 107 from the cutting weight to calculate the amount loaded onto the truck 105. Note that the weight of the cut waste material 104 on the belt conveyor 107 is the cutting weight calculated from the start of cutting until the loading onto the truck 105 is started.

[0057] As shown in Fig. 5(a), the cutting of the asphalt road surface 103 is performed in a predetermined length by the cutting machine 102, and then the second row of cutting is performed along the cutting part of the first row. At this time, in the width direction of the cutting part, since the cutting is performed so that a part overlaps, the cutting volume of the second row is the volume obtained by subtracting the overlapping part 114. In the cutting after the second row, the asphalt road surface 103 before cutting has the end part of the cutting width W cut by the previous row of cutting, but by using the first sensor 111, the road surface height is recognized in the surface shape in a state where the overlapping part 114 has already been cut (see Fig. 5(b)). In the cut surface 103a2 after cutting, by using the second sensor 112, the cut surface height is recognized in the shape cut with the cutting width W including the overlapping part 114 (see Fig. 5(c)). Then, by subtracting the cut surface height from the road surface height excluding the overlapping part 114 by the calculation means 113, the accurate cutting volume excluding the overlapping part 114 can be calculated. The amount of cut waste material 104 loaded onto the truck 105 is set within a range not exceeding the maximum loading capacity of the truck 105.

[0058] The vehicle measurement means 120 measures the total weight of the truck 105 including the loaded cut waste material 104 and is composed of a truck scale 121. The vehicle measurement means 120 is arranged at the factory 8 where the cut waste material is processed, and after the truck 105 measures the total weight by the vehicle measurement means 120, the cut waste material 104 is unloaded.

[0059] The control device 130 consists of a program provided in the server 109a on the cloud service 109. In the server 109a, it compares the actual weight with the loaded quantity and corrects the loaded quantity newly measured by the loaded quantity measuring means 110. The loaded quantity measuring means 110 is provided with a transmitting means 131 for transmitting various data such as actual weight data and vehicle identification number to the control device 130. The vehicle measuring means 120 is provided with a transmitting means 132 for transmitting various data such as the total vehicle weight and vehicle identification number to the control device 130. The transmitting means 131 and 132 consist of a tablet terminal or a PC and transmit to the control device 130 by inputting various data. Note that the transmitting means 131 and 132 may automatically transmit the measurement data of the loaded quantity measuring means 110 and the vehicle measuring means 120. In the server 109a, for each vehicle identification number, the total vehicle weight, the maximum load capacity, the loaded quantity data, and the actual weight data are stored respectively.

[0060] The control device 130 includes a comparing means and a correcting means. The comparing means calculates the actual weight of the cutting waste 104 from the total weight of the truck 105 measured by the vehicle measuring means 120, and compares the calculated actual weight with the loaded quantity measured by the loaded quantity measuring means 110. Specifically, in the comparing means, the actual weight of the cutting waste 104 is calculated by subtracting the vehicle weight of the truck 105 from the total weight of the truck 105. The vehicle weight of the truck 105 is input in advance and recognized from the vehicle identification number. Then, the comparing means compares the loaded quantity measured by the loaded quantity measuring means 110 with the corresponding actual weight to calculate an error.

[0061] The correction means corrects the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount. Specifically, the error between the actual weight and the loading amount is calculated, and the calculated error is added to or subtracted from the loading amount measured by the loading amount measuring means 110. In this case, when the actual weight is smaller than the loading amount, the error is subtracted from the measured loading amount, and this is used as the corrected loading amount. Based on this corrected loading amount, the loading amount of the cutting waste material 104 onto the truck 105 is determined. Then, based on this corrected loading amount, the loading amount of the cutting waste material 104 onto the truck 105 is determined. The loading amount onto the truck 105 is a value obtained by multiplying the maximum loading capacity by a predetermined ratio (safety factor). The predetermined ratio (safety factor) is set to, for example, 90% so that the loading amount and the actual weight do not exceed the maximum loading capacity. When the correction is repeated and the loading amount approaches the actual weight, the predetermined ratio (safety factor) can be increased.

[0062] Note that the correction method is not limited to this, and the error ratio between the actual weight and the loading amount may be calculated by dividing the actual weight by the loading amount. In this case, the error ratio is multiplied by the newly measured loading amount to obtain the corrected loading amount.

[0063] Hereinafter, with reference to FIG. 6, the procedure for correcting the loading amount performed using the loading amount management system having the above configuration will be described. In such a cutting and conveying operation, first, the asphalt road surface 103 is cut by the cutting machine 102 (St1). At the same time, the correction value α is confirmed (St2). Here, it is confirmed whether the correction value α has been calculated in the previous transportation. The correction value α is represented by the absolute error (the value obtained by subtracting the measured weight A from the actual weight A': A' - A) or the relative error (the value obtained by dividing the absolute error by the measured weight A: (A' - A) / A). If the correction value α has already been calculated, the loading amount is corrected in the following steps.

[0064] Next, the cross-sectional area is calculated from the measured values of the sensors attached before and after the road surface cutting section by the loading amount measuring means 110, and the loading amount of the cutting waste 104 is measured by multiplying the cutting distance (St3). At this time, a corrected loading amount A considering the correction value α is calculated. When the correction value α is an absolute error, the corrected loading amount is the value obtained by adding the correction value α to the measured weight. When the correction value α is a relative error, it is the value obtained by adding the value obtained by multiplying the measured weight by the correction value α (absolute error) and the measured weight.

[0065] Thereafter, the cutting waste 104 below the regulated weight (maximum loading amount) is loaded onto the truck 105 and transported to the waste processing plant 108 (St4). The loading amount onto the truck 105 is a numerical value obtained by multiplying the maximum loading amount of the truck 105 by a predetermined ratio (safety factor). In the initial transportation, since no correction of the loading amount is performed, the safety factor is set to a relatively small value so that the loading amount onto the truck 105 does not exceed the maximum loading amount.

[0066] When loading the cutting waste 104, the cutting operator inputs the vehicle number (type) of the truck 105, and the maximum loading amount of the truck 105 is specified. Based on the maximum loading amount, the remaining loading amount of the cutting waste 104 is indicated to the cutting operator. As a method of indication, a rotating light or sound is used. When using a rotating light, for example, the color of the rotating light is normally blue, yellow when there is 1 ton remaining, and red when a predetermined loading amount is reached. When using sound, for example, it is normally silent, announces "1 ton left" when there is 1 ton remaining, and announces "stop, please" when a predetermined loading amount is reached.

[0067] Next, the vehicle measurement means 120 provided in the processing plant 108 measures the total weight of the truck 105 (St5). Since the vehicle measurement means 120 uses a truck scale 121, the total weight can be easily measured by simply parking the truck 105 on the vehicle measurement means 120. Then, the vehicle weight is subtracted from the total weight to calculate the actual weight A' of the cutting waste 104 (St6). At this time, by inputting the type of the truck 105, the vehicle weight of the corresponding truck 105 is subtracted. After that, the average value of the loading amount measured by the loading amount measurement means 110 is compared with the corresponding actual weight to calculate an error (St7). From this error, a correction value α is determined (St8). The correction value α is calculated by subtracting the measured weight A from the actual weight A' in the case of an absolute error, and by dividing the absolute error by the measured weight A in the case of a relative error.

[0068] Here, when there is an error, the calculated correction value α is added to the loading amount newly measured by the loading amount measurement means 110 for correction. As the transportation operations are sequentially performed, the correction is repeated, and the measurement accuracy of the loading amount becomes higher. Therefore, the value of the safety factor multiplied by the maximum loading capacity of the truck 105 can be gradually increased. As a result, the loading amount onto the truck 105 can be made closer to the maximum loading capacity within a range not exceeding the maximum loading capacity. Note that no correction is performed when there is no error between the loading amount and the actual weight.

[0069] According to the loading amount management system 101 of the present embodiment, an error is calculated by comparing the loading amount measured by the loading amount measurement means 110 with the actual weight measured by the vehicle measurement means 120, and the loading amount newly measured by the loading amount measurement means 110 is corrected based on the error, so that the measurement accuracy of the loading amount of the cutting waste 104 loaded onto the truck 105 is improved. Therefore, the loading amount can be accurately grasped, and the cutting waste 104 can be loaded onto the truck 105 at a weight close to the maximum loading capacity within a range not exceeding the maximum loading capacity. Thus, efficient transportation without waste can be performed.

[0070] Also, in the loading amount management system 101 of the present embodiment, the loading amount measuring means 110 includes a first sensor 111 that measures the road surface height before cutting, a second sensor 112 that measures the cutting surface height after cutting, and calculates the cutting cross-sectional area continuously by subtracting the cutting surface height from the road surface height, integrates the cutting cross-sectional area to calculate the cutting volume, and calculates the cutting weight of the cutting waste by multiplying the cutting volume by the unit volume weight of the cutting waste 104. Therefore, the cutting volume can be calculated from the actual road surface shape. Thus, the measurement accuracy of the cutting weight can be improved.

[0071] Furthermore, since the first sensor 111 and the second sensor 112 are configured by laser sensors, they are less expensive than a three-dimensional image measuring device. That is, by using such a loading amount management system 101, the measurement accuracy can be improved without using an expensive three-dimensional image measuring device as in the prior art, so that a loading amount management system can be obtained at low cost.

[0072] Also, in the present embodiment, the loading amount measuring means 110 is arranged at the cutting site where the cutting waste 104 is cut, and the vehicle measuring means 120 is arranged at the factory 108 where the cutting waste 104 is processed. Therefore, at the cutting site, the cutting waste 104 can be loaded onto the truck 105 with the corrected and accurate loading amount.

[0073] Furthermore, in the present embodiment, the control device 130 is provided in the server 109a on the cloud service 109, and various data are also stored in the server 109a. Therefore, the data acquired at two separate locations (the cutting site and the processing factory) can be easily managed. Also, information can be shared with other cutting machines.

[0074] As described above, the embodiments for implementing the present invention have been described. However, the present invention is not intended to be limited to the above embodiments, and design changes can be appropriately made without departing from the spirit of the present invention. For example, in the second embodiment, the first sensor 111 and the second sensor 112 are configured by laser sensors, but the present invention is not limited thereto. For example, other sensors such as ultrasonic sensors and 2D ranging sensors may be used.

[0075] Also, in the above embodiment, the control device 130 is provided in the server 109a on the cloud service 109, but it is not limited thereto. The control device 130 may be configured by the control computer of the control box mounted on the cutting machine 102. In this case, various data such as the vehicle identification number, the total vehicle weight, the maximum load capacity, the loaded amount data, and the actual weight data may be stored in the server 109a on the cloud service 109, or may be stored in the control computer.

[0076] Furthermore, in the above embodiment, the calculation means 113 of the loading amount measuring means 110 is housed in the control computer of the control box mounted on the cutting machine 102, the tablet terminal, or the PC, but it is not limited thereto. For example, it may be provided in the server 109a on the cloud service 109.

[0077] Also, in the above embodiment, the vehicle measuring means 120 is installed in the processing plant 108, but it is not limited thereto. It may be provided at a location other than the processing plant 108, such as in the middle of the route from the cutting site to the processing plant 8 or near the cutting machine 102 at the cutting site.

[0078] Next, the loading amount management system according to the third embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 7 and 8, the loading amount management system according to the present embodiment includes a loading amount measuring means 210, a vehicle measuring means, and a control device. In the present embodiment, the configuration of the loading amount measuring means 210 is different from that of the above embodiment. The vehicle measuring means and the control device have the same configuration as that of the above embodiment.

[0079] The loading amount measuring means 210 measures the loading amount of the cut waste material discharged from cutting the asphalt road surface 203 by the cutting machine 202 onto the truck. As shown in FIG. 9, the cutting machine 202 includes a cutting drum 204 which is a road surface cutting part, a belt conveyor 205 for loading the cut waste material onto the truck, and wheels 206 for traveling on the asphalt road surface 203. The belt conveyor 205 is provided at the front end of the cutting machine 202. The wheels 206 are respectively provided in front of and behind the cutting drum 204. The front wheel 206 travels on the asphalt road surface 203 before cutting, and the rear wheel 206 travels on the asphalt road surface 203 after cutting. The loading amount measuring means 210 is installed on the cutting machine 202 and is provided at the cutting site where the asphalt road surface 203 is cut.

[0080] In this embodiment, the loading amount measuring means 210 calculates the cutting weight from the volume of the cut waste material, and subtracts the cut waste material (the part that has been cut but not loaded onto the truck) on the belt conveyor 205 from the cutting weight to calculate the loading amount. As shown in FIGS. 7 and 8, the loading amount measuring means 210 includes a cutting width detection device 220, a cutting depth detection device 250, a cutting distance detection device 280, and a calculation means (not shown).

[0081] The cutting width detection device 220 is a device for detecting the cutting width. By the way, when cutting the asphalt road surface 203, after cutting a predetermined length with the cutting machine 202, the second row of cutting is performed along the cutting part of the first row. At this time, in the width direction of the cutting part, since the cutting is performed so that a part overlaps, the cutting width of the second row is the length obtained by subtracting the width dimension of the overlapping part 203a from the width dimension of the cutting drum 204. Also, on the cutting surfaces after the second row, a step portion 203b with the cut asphalt road surface 203 is formed at the front row side end of the asphalt road surface 203 (cutting surface) before cutting. When performing the cutting of the first row, the cutting width is equal to the width of the cutting drum 204. The cutting width detection device 220 includes a laser distance meter 221. The laser distance meter 221 is provided above one end in the width direction of the cutting drum 204 (the end on the side away from the cut road surface in the front row), and faces the lower part of the other end in the width direction of the cutting drum 204 (the end on the side of the cut road surface in the front row). The laser distance meter 221 irradiates a laser toward the other end in the width direction of the cutting drum 204, and measures the length L1 of the hypotenuse from the upper part of one end of the cutting drum 204 to the end of the cutting surface. In the cutting width detection device 220, from the length L1 of the hypotenuse measured by the laser distance meter 221 and the installation height L2 of the laser distance meter 221 input in advance, using the Pythagorean theorem, the cutting width dimension (base) L3, which is the length from one end of the cutting drum 204 to the step portion 203b, is calculated. The calculation of the cutting width dimension L3 is performed by the calculation means.

[0082] The cutting depth detection device 250 detects the cutting depth of the asphalt road surface 203 cut by the cutting drum 204. It includes a lifting member 251 and a laser distance meter 252. The cutting depth detection device 250 is supported by a support arm 207 extending rearward from the cutting drum 204. At the rear end of the support arm 207, a cutting depth detection device 250 and a cutting distance detection device 280 are provided. At the rear end of the support arm 207, an overhanging arm 207a that protrudes above the cut surface 208 after cutting is provided. At the tip of the overhanging arm 207a, the lifting member 251 is attached so as to be able to move up and down. The lifting member 251 includes a traveling wheel 253 and a reflecting piece 254. The traveling wheel 253 travels on the cut surface 208 along the cutting direction. The laser distance meter 252 measures the height of the traveling surface of the lifting member 251 and is provided on the fixed side (overhanging arm 207a) above the reflecting piece 254. The laser distance meter 252 irradiates a laser toward the lower reflecting piece 254 and measures the separation distance from the reflecting piece 254 to detect the cutting depth. Specifically, the cutting depth is calculated by comparing the reference height when the traveling wheel 253 of the lifting member 251 is located on the cut surface before cutting with the height of the lifting member 251 formed by the laser distance meter 252. That is, since the lifting member 251 descends by the depth excavated by the cutting drum 204, the cutting depth can be detected by calculating the descent distance. The calculation of the cutting depth is performed by a calculation means.

[0083] The cutting distance detection device 280 detects the cutting distance of the asphalt road surface 203 cut by the cutting drum 204. The cutting distance detection device 280 includes a rotary encoder 281 attached to the lower end of a hanging arm 207b that extends downward from the tip of the support arm 207. The rotary encoder 281 rotates along the asphalt road surface 203. The cutting distance detection device 280 detects the cutting distance by calculating the traveling distance according to the rotation speed of the rotary encoder 281. In this embodiment, the rotary encoder 281 travels on the asphalt road surface 203 before cutting, but it may be arranged to travel on the cut surface 208 after cutting.

[0084] The calculating means consists of the control computer of the control box installed in the cutting machine 202 and the program stored in a tablet terminal or a PC. The calculating means calculates the cutting volume by multiplying the cutting width, the cutting depth, and the cutting distance, and calculates the loading amount of the cutting waste based on the value (cutting weight) obtained by multiplying the cutting volume by the unit volume weight of the cutting waste input in advance.

[0085] The cutting waste is conveyed via the belt conveyor 205 after being cut by the cutting drum 204 and loaded onto the truck. Therefore, it is necessary to subtract the weight of the cutting waste on the belt conveyor 205 (unloaded weight) from the calculated cutting weight to obtain the loading amount onto the truck. For this reason, the calculating means subtracts the weight of the cutting waste on the belt conveyor 205 from the cutting weight to calculate the loading amount onto the truck. Note that the weight of the cutting waste on the belt conveyor 205 is the cutting weight calculated from the start of cutting until the loading onto the truck starts.

[0086] The vehicle measuring means is the same as that in the first and second embodiments and measures the total weight of the truck including the loaded cutting waste. The vehicle measuring means is arranged at the factory where the cutting waste is processed, and after the total weight of the truck is measured by the vehicle measuring means, the cutting waste is unloaded.

[0087] The control device is equivalent to those of the first and second embodiments and consists of a program provided in a server on a cloud service. In the server, the actual weight is compared with the loaded quantity, and the loaded quantity newly measured by the loaded quantity measuring means 210 is corrected. The loaded quantity measuring means 210 is provided with a transmitting means for transmitting various data such as actual weight data and vehicle identification numbers to the control device. The vehicle measuring means is provided with a transmitting means for transmitting various data such as the total vehicle weight and vehicle identification number to the control device. The transmitting means consists of a tablet terminal or a PC and transmits to the control device by inputting various data. Note that the transmitting means may automatically transmit the measurement data of the loaded quantity measuring means 110 and the vehicle measuring means 120. In the server, the total vehicle weight, maximum load capacity, loaded quantity data, and actual weight data are stored for each vehicle identification number.

[0088] The control device includes a comparison means and a correction means. The comparison means calculates the actual weight of the cutting waste from the total weight of the truck measured by the vehicle measuring means, and compares the calculated actual weight with the loaded quantity measured by the loaded quantity measuring means. Specifically, in the comparison means, the actual weight of the cutting waste is calculated by subtracting the vehicle weight of the truck from the total weight of the truck. The vehicle weight of the truck is input in advance and recognized from the vehicle identification number. Then, the comparison means compares the loaded quantity measured by the loaded quantity measuring means with the corresponding actual weight to calculate an error.

[0089] The correction means corrects the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount. Specifically, the error between the actual weight and the loading amount is calculated, and the calculated error is added to or subtracted from the loading amount measured by the loading amount measuring means 210. In this case, when the actual weight is smaller than the loading amount, the error is subtracted from the measured loading amount, and this is used as the corrected loading amount. Based on this corrected loading amount, the loading amount of the cutting waste material onto the truck is determined. Then, based on this corrected loading amount, the loading amount of the cutting waste material onto the truck is determined. The loading amount onto the truck is a value obtained by multiplying the maximum loading capacity by a predetermined ratio (safety factor). The predetermined ratio (safety factor) is set to, for example, 90% so that the loading amount and the actual weight do not exceed the maximum loading capacity. When the correction is repeated and the loading amount approaches the actual weight, the predetermined ratio (safety factor) can be increased.

[0090] Note that the correction method is not limited to this, and the error ratio between the actual weight and the loading amount may be calculated by dividing the actual weight by the loading amount. In this case, the error ratio is multiplied by the newly measured loading amount to obtain the corrected loading amount.

[0091] The procedure for correcting the loading amount using the loading amount management system with the above configuration will be described below. In such a cutting and conveying operation, first, the asphalt road surface 203 is cut by the cutting machine 202. At the same time, the correction value α is confirmed. Here, it is confirmed whether the correction value α has been calculated in the previous transportation. The correction value α is represented by the absolute error (the value obtained by subtracting the measured weight A from the actual weight A': A' - A) or the relative error (the value obtained by dividing the absolute error by the measured weight A: (A' - A) / A). If the correction value α has already been calculated, the loading amount is corrected in the following steps.

[0092] Next, the cutting volume of the cutting waste is calculated by multiplying the cutting width, cutting depth, and cutting distance calculated by the loading amount measuring means 210, and the cutting weight (loading amount) is calculated by multiplying this by the unit volume weight of the cutting waste. At this time, a corrected loading amount A considering the correction value α is calculated. When the correction value α is an absolute error, the corrected loading amount is the value obtained by adding the correction value α to the measured weight. When the correction value α is a relative error, it is the value obtained by adding the value obtained by multiplying the measured weight by the correction value α (absolute error) and the measured weight.

[0093] Thereafter, cutting waste below the regulated weight (maximum loading capacity) is loaded onto the truck and transported to the waste treatment plant. The loading amount onto the truck is a numerical value obtained by multiplying the maximum loading capacity of the truck by a predetermined ratio (safety factor). In the initial transportation, since no correction of the loading amount is performed, the safety factor is set to a relatively small value so that the loading amount onto the truck does not exceed the maximum loading capacity.

[0094] Next, the total weight of the truck is measured by the vehicle measuring means provided at the treatment plant. Since the vehicle measuring means uses a truck scale, the total weight can be easily measured simply by stopping the truck on the vehicle measuring means. Then, the vehicle weight is subtracted from the total weight to calculate the actual weight A' of the cutting waste. At this time, by inputting the type of the truck, the vehicle weight of the corresponding truck is subtracted. Thereafter, the average value of the loading amount measured by the loading amount measuring means and the corresponding actual weight are compared to calculate an error. From this error, the correction value α is determined. The correction value α is calculated by subtracting the measured weight A from the actual weight A' in the case of an absolute error, and by dividing the absolute error by the measured weight A in the case of a relative error.

[0095] Here, when there is an error, correction is performed by adding the calculated correction value α to the loading amount newly measured by the loading amount measuring means 210. As the transportation operations are sequentially performed, the correction is repeated and the measurement accuracy of the loading amount is improved, so the value of the safety factor multiplied by the maximum loading capacity of the truck can be gradually increased. As a result, the loading amount onto the truck can be brought close to the maximum loading capacity within the range not exceeding the maximum loading capacity. Note that no correction is performed when there is no error between the loading amount and the actual weight.

[0096] According to the loading amount management system of this embodiment, similar to the first and second embodiments, the loading amount measured by the loading amount measuring means 210 is compared with the actual weight measured by the vehicle measuring means to calculate an error, and based on this error, the loading amount newly measured by the loading amount measuring means 210 is corrected, thereby improving the measurement accuracy of the loading amount of the cutting waste loaded on the truck. Therefore, the loading amount can be accurately grasped, and the cutting waste can be loaded on the truck at a weight close to the maximum loading amount within the range not exceeding the maximum loading amount. Thus, efficient transportation without waste can be achieved.

[0097] Also, in the loading amount management system of this embodiment, since the loading amount measuring means 210 detects the cutting width with the cutting width detection device 220, the cutting depth with the cutting depth detection device 250, and the cutting distance with the cutting distance detection device 280, the measurement accuracy of the loading amount of the cutting waste loaded on the handling vehicle is improved, and the loading amount can be accurately grasped. Furthermore, since the cutting width detection device uses the length obtained by subtracting the width dimension of the overlapping portion 203a from the width dimension of the cutting drum 204 as the cutting width, the cutting width corresponding to the actual road surface shape can be accurately detected. The measurement accuracy of the cutting weight can be further improved.

[0098] Furthermore, since the laser distance meter 221 of the cutting width detection device 220 and the laser distance meter 252 of the cutting depth detection device 250 are constituted by laser sensors, they are less expensive than a three-dimensional image measuring device. That is, by using such a loading amount management system 101, the measurement accuracy can be improved without using an expensive three-dimensional image measuring device as in the prior art, and thus a loading amount management system can be obtained at low cost.

[0099] Also, in this embodiment, since the loading amount measuring means 210 is arranged at the cutting site where the cutting of the cutting waste is performed, and the vehicle measuring means is arranged at the factory where the cutting waste is processed, the cutting waste can be loaded on the truck with the corrected and accurate loading amount at the cutting site.

[0100] Furthermore, in the present embodiment, since the control device is provided in a server on a cloud service and various data are also stored in the server, data acquired at two separate locations (the cutting site and the processing plant) can be easily managed. Also, information can be shared with other cutting machines.

[0101] As described above, the embodiments for carrying out the present invention have been explained. However, the present invention is not intended to be limited to the above-described embodiments, and design changes can be appropriately made without departing from the spirit of the present invention. For example, in the third embodiment, the cutting distance detection device 280 is a rotary encoder 281 that rotates on the asphalt road surface 203, but it is not limited thereto. In the modified example shown in FIG. 10, the cutting distance detection device 290 is a rotary encoder 291 that abuts on the outer peripheral surface of the wheel 206 of the cutting machine 202. Such a rotary encoder 291 is provided behind the rear wheel 206 and is rotatably supported in front of a support arm 293 that extends forward from the rear bumper 292 of the vehicle body. Since the rotational distance of the outer peripheral surface of the wheel 206 is the same as the traveling distance of the cutting machine 202, the cutting distance can be calculated according to the number of rotations of the rotary encoder 291 on the outer peripheral surface of the wheel 206.

[0102] In addition, in the modified example shown in FIG. 11, the cutting distance detection device 295 is a laser sensor 296 that faces the outer peripheral surface of the wheel 206 of the cutting machine 202. Such a laser sensor 296 is attached to the rear bumper 292 behind the rear wheel 206. The laser sensor 296 irradiates a laser toward the outer peripheral surface of the wheel 206 and measures the number of grooves 206a of the tread of the wheel 206 that pass through the irradiation position. By the way, when the outer peripheral length of the wheel 206 is divided by the number of grooves 206a, the distance between the grooves 206a is obtained. Here, the traveling distance of the wheel 206 can be calculated by multiplying the distance between adjacent grooves 206a, 206a by the number of passages of the groove 206a.

[0103] As described above, even if cutting distance detection devices 290, 295 having other configurations are adopted, the same operational effects as those of the above-described embodiment can be obtained.

[0104] Also, in the third embodiment, the cutting width detection device 220 is the laser distance meter 221, but it is not limited thereto. In the modification shown in FIG. 12, the cutting width detection device 230 includes a slide plate 231 and a laser distance meter 232. The cutting width detection device 230 is supported by a support arm 235 that protrudes forward from the cutting drum 204 and is disposed in front of the cutting drum 204. The slide plate 231 is movable along the width direction (vehicle width direction) of the cutting drum 204 and abuts against the end portion (step portion 203b) of the cutting surface (asphalt road surface 203) before cutting from the side of the cut road surface. The slide plate 231 is movable along a guide rod 233 that extends along the vehicle width direction. The lower end portion of the slide plate 231 abuts against the side surface of the step portion 203b. The guide rod 233 has a length equivalent to the width of the cutting drum 204. A spring member 234 in a compressed state is interposed between the end portion of the guide rod 233 on the cut road surface side and the slide plate 231, and the slide plate 231 is biased toward the side surface of the step portion 203b.

[0105] The laser distance meter 232 is provided at the end portion of the guide rod 233 on the cut road surface side and is disposed so as to face the slide plate 231. The laser distance meter 232 irradiates a laser toward the slide plate 231 and measures the distance between one end (the end portion on the cut road surface side) of the cutting drum and the slide plate. The cutting width detection device 230 calculates the cutting width by subtracting the distance between one end of the cutting drum 204 and the slide plate 231 from the width dimension of the cutting drum 204.

[0106] In addition, in the modification shown in FIG. 13, the cutting width detection device 240 includes a step detection unit 241. The step detection unit 241 of such a modification detects the position of the step portion 203b between the asphalt road surface 203 (cutting surface) before cutting and the asphalt road surface 203 after cutting, and includes a plurality of rotating pieces 243 provided along the width direction of the cutting drum 204. The rotating piece 243 has a tip portion that abuts against the surface of the road surface after cutting or the cutting surface before cutting, and is disposed in front of the cutting drum 204. The base end portion (upper end portion) of the rotating piece 243 is rotatably supported by a support pin 244. The support pin 244 is disposed in front of the cutting drum 204 and above the asphalt road surface 203, and extends along the width direction of the cutting drum 204. The rotating piece 243 is inclined downward from the base end portion, and the tip portion (lower end portion) of the rotating piece 243 slides on the asphalt road surface 203. The tip portion of the rotating piece 243 located on the road surface after cutting abuts against the lower portion of the step portion 203b, and the tip portion of the rotating piece 243 located on the cutting surface before cutting abuts against the upper portion of the step portion 203b. That is, the rotating piece 243 on the road surface after cutting is inclined downward more than the rotating piece 243 on the road surface before cutting. The step detection unit 241 detects the difference in the inclination angle and determines the boundary position of the rotating pieces 243 having different inclination angles as the step portion 203b. Note that the smaller the width dimension of the rotating piece 243 and the larger the number of the rotating pieces 243, the higher the accuracy of the detection position of the step portion 203b.

[0107] As described above, even if the cutting width detection devices 230 and 240 having other configurations are adopted, the same operational effects as those of the above-described embodiment can be obtained.

[0108] Furthermore, in the third embodiment, the cutting depth detection device 250 measures the height of the lifting member 251 traveling on the cutting surface 208 with the laser distance meter 252, but it is not limited thereto. In the modified example shown in FIG. 14, the cutting depth detection device 260 includes a first sensor 261 that measures the road surface height of the asphalt road surface 203 before cutting, and a second sensor 262 that measures the cutting surface height of the cutting surface 208 after cutting. The first sensor 261 is provided on the side surface of the uncut side of the cutting drum 204 and faces downward. The first sensor 261 irradiates a laser toward the lower asphalt road surface 203 and measures the distance to the asphalt road surface 203. The second sensor 262 is provided at the same height position as the first sensor 261 on the rear side surface of the cutting drum 204 and faces downward. The second sensor 262 irradiates a laser toward the lower cutting surface 208 and measures the distance to the cutting surface 208. The cutting depth detection device 260 calculates the cutting depth by subtracting the measurement distance by the first sensor 261 from the measurement distance by the second sensor 262.

[0109] In addition, in the modification shown in Fig. 15, the cutting depth detection device 270 includes a lifting member 271 and a laser distance meter 272. The lifting member 271 in this modification is composed of a side plate that is vertically movably provided on the side surface of the uncut side of the cutting drum 204, and moves up and down following the asphalt road surface 203 before cutting. A reflecting piece 273 is provided on the side surface of the lifting member 271. The laser distance meter 272 measures the height of the asphalt road surface 203 by measuring the relative height of the lifting member 271 with respect to the cutting drum 204. The laser distance meter 272 is provided on the side surface of the cutting drum 204 above the reflecting piece 273. The laser distance meter 272 irradiates a laser toward the lower reflecting piece 273 and measures the separation distance L4 from the reflecting piece 273. Since the lower end of the lifting member 271 is in contact with the asphalt road surface 203, by adding the distance L5 between the reflecting piece 273 and the lower end of the lifting member 271 to the measured distance L4 between the laser distance meter 272 and the reflecting piece 273, the distance L6 between the laser distance meter 272 and the asphalt road surface 203 is obtained. By the way, since the laser distance meter 272 is provided on the side surface of the cutting drum 204, the distance L7 between the laser distance meter 272 and the bottom surface of the cutting drum 204 (the height position of the cutting surface 208) is constant. Therefore, the cutting depth can be calculated by subtracting the distance L6 between the laser distance meter 272 and the asphalt road surface 203 from the distance L7 between the laser distance meter 272 and the cutting surface 208.

[0110] As described above, even if the cutting depth detection devices 260 and 270 with other configurations are adopted, the same operational effects as those of the above embodiment can be obtained.

Description of Reference Numerals

[0111] 1 Loading amount management system 2 Cutting machine 3 Asphalt road surface (road surface) 4 Cutting waste 5 Truck (transport vehicle) 7 Belt conveyor 8 Factory 9 Cloud service 9a Server 10 Loading amount measuring means 13 2D measurement range sensor 15 Conveyor scale 20 Vehicle measuring means 21 Truck scale 30 Control device 31 Transmitting means 32 Transmitting means 101 Loading quantity management system 102 Cutting machine 103 Asphalt road surface (road surface) 103a Cutting surface 104 Cutting waste 105 Truck (cargo handling vehicle) 109 Cloud service 109a Server 110 Loading quantity measuring means 111 First sensor 112 Second sensor 113 Calculating means 120 Vehicle measuring means 130 Control device 202 Cutting machine 203 Asphalt road surface 204 Cutting drum 206 Wheel 206a Groove 208 Cutting surface 210 Loading quantity measuring means 220 Cutting width detection device 221 Laser distance meter 230 Cutting width detection device 231 Slide plate 232 Laser distance meter 240 Cutting width detection device 241 Step detection part 243 Rotating piece 244 Support pin 250 Detection device 251 Lifting member 252 Laser distance meter 253 Traveling wheel 254 Reflective sheet 270 Detection device 271 Lifting member 272 Laser distance meter 280 Cutting distance detection device 281 Rotary encoder 290 Cutting distance detection device 291 Rotary encoder 295 Cutting distance detection device 296 Laser sensor

Claims

1. Loading amount measuring means for measuring the loading amount of the cutting waste discharged by cutting the road surface with a cutting machine when loading it onto a cargo vehicle on the road surface, Vehicle measuring means for measuring the total weight of the cargo vehicle including the loaded cutting waste, Comparing means for comparing the actual weight of the cutting waste calculated by subtracting the vehicle weight of the cargo vehicle from the total weight and the loading amount measured by the loading amount measuring means, and correction means for correcting the loading amount newly measured by the loading amount measuring means based on the error between the actual weight and the loading amount, and a control device having the same, The correction means calculates the error between the actual weight and the loading amount, adds or subtracts the error to the newly measured loading amount, or divides the actual weight by the loading amount to calculate the error ratio between the actual weight and the loading amount, and multiplies the error ratio by the newly measured loading amount to obtain a corrected loading amount. A loading amount management system characterized by the above.

2. The loading amount measuring means includes a 2D measurement area sensor for measuring the volume of the cutting waste on the belt conveyor of the cutting machine, and calculation means for calculating the loading amount of the cutting waste based on a value obtained by multiplying the measured volume of the cutting waste by the unit volume weight of the cutting waste input in advance. The loading amount management system according to claim 1, characterized by the above.

3. The loading amount measuring means includes a conveyor scale for continuously measuring the weight of the cutting waste on the belt conveyor of the cutting machine. The loading amount management system according to claim 1 or claim 2, characterized by the above.

4. The loading amount measuring means is arranged at the cutting site where the cutting waste is cut, The vehicle measuring means is arranged at the factory where the cutting waste is processed. The loading amount management system according to any one of claims 1 to 3, characterized by the above.

5. The control device is provided in a server on a cloud service, and in the server, the comparison between the actual weight and the loading amount is performed, and the correction of the loading amount newly measured by the loading amount measuring means is performed. The loading amount management system according to any one of claims 1 to 4, characterized by the above.

6. Loading amount measuring means for measuring the loading amount of the cutting waste discharged by cutting the road surface with a cutting machine when loading it onto a cargo vehicle on the road surface, Vehicle measuring means for measuring the total weight of the cargo vehicle including the loaded cutting waste, A control device having a comparison means for comparing the actual weight of the cut waste material calculated by subtracting the vehicle weight of the handling vehicle from the total weight, with the loaded amount measured by the loaded amount measuring means, and a correction means for correcting the loaded amount newly measured by the loaded amount measuring means based on the error between the actual weight and the loaded amount. The correction means calculates the error between the actual weight and the loaded amount, adds or subtracts the error to the newly measured loaded amount, or calculates the error ratio between the actual weight and the loaded amount by dividing the actual weight by the loaded amount, and multiplies the error ratio by the newly measured loaded amount to obtain a corrected loaded amount. The loaded amount measuring means includes a first sensor for measuring the road surface height before cutting, a second sensor for measuring the cut surface height after cutting, continuously calculates the cut cross-sectional area by subtracting the cut surface height from the road surface height, calculates the cut volume by integrating the cut cross-sectional area, and calculates the loaded amount of the cut waste material based on a value obtained by multiplying the cut volume by the unit volume weight of the cut waste material input in advance. A loaded amount management system characterized by this.

7. The loaded amount measuring means is arranged at the cutting site where the cut waste material is cut. The vehicle measuring means is arranged at the factory where the cut waste material is processed. The loaded amount management system according to claim 6, characterized by this.

8. The control device is provided in a server on a cloud service, and in the server, the comparison between the actual weight and the loaded amount is performed, and the correction of the loaded amount newly measured by the loaded amount measuring means is performed. The loaded amount management system according to claim 6 or claim 7, characterized by this.

9. A loaded amount measuring means for measuring the loaded amount of the cut waste material when loading the cut waste material discharged by cutting the road surface with a cutting machine onto a handling vehicle on the road surface, A vehicle measuring means for measuring the total weight of the handling vehicle including the loaded cut waste material, A control device having a comparison means for comparing the actual weight of the cut waste material calculated by subtracting the vehicle weight of the handling vehicle from the total weight, with the loaded amount measured by the loaded amount measuring means, and a correction means for correcting the loaded amount newly measured by the loaded amount measuring means based on the error between the actual weight and the loaded amount. The correction means calculates the error between the actual weight and the charged amount, and adds or subtracts the error to / from the newly measured charged amount, or divides the actual weight by the charged amount to calculate the error ratio between the actual weight and the charged amount, multiplies the error ratio by the newly measured charged amount, and uses this as the corrected charged amount. The charged amount measuring means includes a cutting width detecting device for detecting the cutting width, a cutting depth detecting device for detecting the cutting depth, a cutting distance detecting device for detecting the cutting distance, and a calculating means for calculating the cutting volume by multiplying the cutting width, the cutting depth, and the cutting distance, and calculating the charged amount of the cutting waste based on a value obtained by multiplying the cutting volume by the unit volume weight of the cutting waste input in advance. A charged amount management system characterized by this.

10. The cutting width detecting device includes a laser distance meter provided at an upper portion of one end in the width direction of the cutting drum, and calculates the cutting width from the length of the hypotenuse from the upper portion of one end of the cutting drum measured by the laser distance meter to the end of the cutting surface. The charged amount management system according to claim 9, characterized by this.

11. The cutting width detecting device includes a slide plate that is movable along the width direction of the cutting drum and abuts on the end of the cutting surface before cutting from the side of the cut road surface, and a laser distance meter for measuring the distance between one end of the cutting drum and the slide plate, and calculates the cutting width by subtracting the distance between one end of the cutting drum and the slide plate from the width dimension of the cutting drum. The charged amount management system according to claim 9, characterized by this.

12. The cutting width detecting device includes a step detecting portion in which a plurality of rotating pieces whose tip portions abut on the surface of the cut road surface or the cutting surface before cutting are arranged in parallel along the width direction of the cutting drum, and calculates the cutting width from the position of the step portion between the cut road surface or the cutting surface before cutting detected by the step detecting portion. The charged amount management system according to claim 9, characterized by this.

13. The cutting depth detecting device includes a lifting member that moves on the cutting surface after cutting, and a laser distance meter for measuring the height of the lifting member, and calculates the cutting depth by comparing the reference height when the lifting member is located on the cutting surface before cutting with the height of the lifting member formed by the laser distance meter. The charged amount management system according to any one of claims 9 to 12, characterized by this.

14. The cutting distance detection device includes a rotary encoder that contacts the outer peripheral surface of the wheel of the cutting machine. The loading amount management system according to any one of claims 9 to 13, characterized in that.

15. The cutting distance detection device includes a laser sensor facing the outer peripheral surface of the wheel of the cutting machine, and calculates the cutting distance from the number of grooves in the tread of the wheel detected by the laser sensor. The loading amount management system according to any one of claims 9 to 13, characterized in that.

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