Soil removal system

Abstract

To provide an earth removal system capable of calculating the amount of earth stored in a sediment hopper with a simple configuration.SOLUTION: An earth removal system 1 comprises: a sediment hopper 10 capable of storing sediment and discharging the sediment downward; a distance measuring sensor 40 installed above an inlet 11 of the sediment hopper 10; and a stored sediment volume calculation device 50 calculating a volume of stored sediment in the sediment hopper 10. The stored sediment volume calculation device 50 comprises calculation means 51 for calculating the stored sediment volume based on a distance from the distance measuring sensor 40 to a top surface of the sediment in the sediment hopper 10.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an earth removal system. [Background Art]

[0002] In excavation work such as caisson construction and shield construction, excavated sediment is put into a sediment hopper installed on the ground, and after the sediment is temporarily stored in the sediment hopper, it is discharged into the loading section of a dump truck arranged below the sediment hopper. At a construction site, the number of dump trucks required for carrying out sediment is calculated according to the amount of sediment stored in the sediment hopper. As a method for calculating the amount of sediment stored in the sediment hopper, there is a method in which a load cell is incorporated in the middle part of a support column that supports the sediment hopper, and the amount of stored sediment is calculated based on the change in load before and after sediment is charged into the sediment hopper (see, for example, Patent Document 1). [Prior Art Literature] [Patent Literature]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2013-148404 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] In the conventional method for calculating the amount of stored sediment described above, since a load cell is incorporated into the support column that supports the sediment hopper, there are problems that the structure is complicated, the cost is increased, and it is difficult to apply the method to an existing sediment hopper. An object of the present invention is to solve the above-described problems and provide an earth removal system capable of calculating the amount of sediment stored in a sediment hopper with a simple structure. [Means for Solving the Problem]

[0005] To solve the above problem, the present invention provides an earth removal system, wherein A bucket for transporting soil and sand, and the aforementionedThe system includes a soil hopper capable of storing soil and discharging the soil downwards, a distance measuring sensor installed above the input port formed at the top of the soil hopper, and a soil volume calculation device for calculating the amount of soil stored in the soil hopper. The bucket is configured to tilt above the input opening of the soil hopper so that the soil in the bucket is fed into the soil hopper. The aforementioned soil storage volume calculation device is A detection sensor for detecting the tilting of the bucket; a bucket input amount calculation means for calculating the total amount of soil and sand deposited into the soil hopper based on the number of times the bucket tilts; and an input amount calculation means for calculating the amount of soil and sand to be deposited into the soil hopper by comparing the amount of soil and sand stored before depositing the soil and sand into the soil hopper with the amount of soil and sand stored after depositing the soil and sand into the soil hopper. Calculation means for calculating the amount of stored soil based on the distance from the distance measuring sensor to the top surface of the soil in the soil hopper. and, It is equipped with. In the soil removal system of the present invention, the amount of soil stored in the soil hopper is calculated using a distance measuring sensor installed above the soil hopper. This results in a simple structure, reduced costs, and easy application to existing soil hoppers. Furthermore, by using the soil removal system of the present invention to calculate the amount of soil stored in the soil hopper at the end of each day's excavation work, it is possible to accurately plan the number of dump trucks required at the start of work the following day.

[0006] In the aforementioned soil removal system, it is preferable to provide a plurality of distance measuring sensors, and for the stored soil volume calculation device to calculate the stored soil volume based on the average value of the distance from each distance measuring sensor to the top surface of the soil in the soil hopper. This configuration can improve the accuracy of calculating the stored soil volume in the soil hopper. In the aforementioned soil removal system, if the soil storage volume calculation device is provided with storage means for storing soil storage volume data that defines the relationship between the distance from the distance measuring sensor to the top surface of the soil in the soil hopper and the soil storage volume, the calculation means can easily calculate the soil storage volume based on the soil storage volume data.

[0007] If the aforementioned soil removal system includes multiple soil hoppers, it is preferable to install the distance measuring sensor in each soil hopper and have the calculation means calculate the amount of soil stored in each soil hopper. With this configuration, the amount of soil stored in each soil hopper can be determined, making it possible to adjust the frequency with which dump trucks are dispatched to each soil hopper, and ultimately optimizing the soil removal operation. It is preferable to provide a display means for displaying the amount of stored soil calculated by the aforementioned soil storage volume calculation device, so that the amount of stored soil in each soil hopper can be determined from the outside. It is preferable to install the display means outside the soil hopper so that dump truck drivers can easily check the amount of soil stored in the soil hopper. In addition, display methods include, for example, bulletin boards that display the amount of stored soil in stages using different colors, and mobile communication terminals such as tablets that display the amount of stored soil on a screen.

[0008] The aforementioned soil removal system So, The storage volume calculation device is provided with an input volume calculation means that compares the storage volume before the soil is put into the soil hopper with the storage volume after the soil is put into the soil hopper, and calculates the amount of soil to be put into the soil hopper. Therefore, This allows us to track the amount of soil being fed into the soil hopper. The aforementioned soil removal system So, The hopper is equipped with a bucket for transporting the soil, and the bucket tilts above the inlet of the soil hopper, so that the soil in the bucket is fed into the soil hopper. , The aforementioned soil storage volume calculation device includes a detection sensor for detecting the tilting of the bucket, and a bucket input volume calculation means for calculating the total amount of soil and sand deposited into the soil hopper based on the number of times the bucket has tilted. A system is in place. This configuration allows for monitoring the progress of excavation work and the operating rate of the bucket. Furthermore, if a large discrepancy is detected between the total amount of soil loaded into the soil hopper calculated using distance sensors and the total amount of soil loaded into the soil hopper estimated from the number of bucket tilts (for example, if the amount of soil loaded into the bucket is often less than the planned amount), it becomes possible to instruct workers to optimize the amount of soil loaded into the bucket, thereby improving the efficiency of soil removal work.

[0009] In the aforementioned soil removal system, a bucket for transporting the soil and a tilting member installed above the soil hopper may be provided, and the system may be configured such that the bucket tilts above the input opening of the soil hopper, thereby allowing the soil in the bucket to be fed into the soil hopper. In this configuration, the bucket is suspended from the transport device, and an engaging portion is provided at the bottom of the bucket to engage with the tilting member. By moving the bucket toward above the input opening of the soil hopper and engaging the engaging portion with the tilting member, the bucket can be tilted around the engaging portion. [Effects of the Invention]

[0010] The soil removal system of the present invention uses a distance measuring sensor to calculate the amount of soil stored in the soil hopper, resulting in a simple structure, reduced costs, and easy application to existing soil hoppers. Furthermore, by understanding the amount of soil stored in the soil hopper, soil removal operations can be planned with greater precision. [Brief explanation of the drawing]

[0011] [Figure 1] This figure shows a soil removal system according to an embodiment of the present invention. [Figure 2] This figure shows a soil hopper in a soil removal system according to an embodiment of the present invention. [Figure 3] This figure shows a bucket of a soil removal system according to an embodiment of the present invention. [Figure 4] This is an overall diagram showing a soil removal system according to an embodiment of the present invention. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. Figure 1 shows a soil removal system according to an embodiment of the present invention. In the present embodiment, an earth removal system 1 applied to the pneumatic caisson method will be described. In earth removal work for the pneumatic caisson method, as shown in Fig. 1, excavated sediment is loaded into buckets 20, the sediment is conveyed by the buckets 20, and the sediment is fed from the buckets 20 into a sediment hopper 10. Furthermore, the sediment stored in the sediment hopper 10 is discharged to the loading section of a dump truck T disposed below the sediment hopper 10, and the sediment is transported by the dump truck T.

[0013] The earth removal system 1 of the present embodiment includes a plurality of sediment hoppers 10, and a bucket 20 provided for each of the sediment hoppers 10. Fig. 4 is an overall configuration diagram showing the earth removal system according to an embodiment of the present invention. As shown in Fig. 4, the earth removal system 1 includes a plurality of distance measuring sensors 40 installed above the sediment hopper 10, a stored sediment amount calculation device 50 that calculates the amount of sediment stored in the sediment hopper 10, and a display means 60 that displays the stored sediment amount.

[0014] Fig. 2 is a diagram showing the sediment hopper of the earth removal system according to an embodiment of the present invention. As shown in Fig. 2, the sediment hopper 10 is a funnel-shaped container formed such that the lower end portion is smaller than the upper end portion, is capable of storing sediment, and can discharge the stored sediment downward. An input port 11 is opened at the upper end face of the sediment hopper 10, and an openable and closable discharge port 12 is formed at the lower end face of the sediment hopper 10. In the sediment hopper 10, sediment is stored inside with the discharge port 12 closed, and by opening the discharge port 12, the sediment is discharged downward. As shown in Fig. 1, the sediment hopper 10 is supported at a predetermined height by a plurality of legs. A space where the dump truck T can be parked is secured directly below the discharge port 12 of the sediment hopper 10. In addition, the sediment hopper 10 is disposed inside the lower portion of a tower-shaped support body 30.

[0015] As shown in Figure 2, the distance measuring sensor 40 is installed directly above the input port 11 of the soil hopper 10. In this embodiment, three distance measuring sensors 40 are arranged with spacing between them in the lateral direction, but the number of distance measuring sensors 40 is not limited. The distance measuring sensor 40 is a known sensor, such as an optical or radio wave sensor. The distance measuring sensor 40 outputs electromagnetic waves, such as laser light or millimeter waves, towards the inlet 11 of the soil hopper 10, and measures the distance from the distance measuring sensor 40 to the top surface of the soil in the soil hopper 10 by receiving and analyzing the electromagnetic waves reflected from the top surface of the soil inside the soil hopper 10.

[0016] As shown in Figure 1, the bucket 20 is a bottomed cylindrical container capable of loading soil and sand. The bucket 20 is suspended by a wire 33 of a conveying device 32, which is mounted on an arm 31 that extends laterally from the top of the support 30. The conveying device 32 is mounted on an arm 31 that extends laterally from the top of the support 30. The bucket 20 is movable laterally along the arm 31 by the conveying device 32, and can be raised and lowered by the conveying device 32 by unwinding or winding up the wire 33. The bucket 20 is movable between the excavation site and directly above the input opening 11 of the soil hopper 10. Figure 3 shows a bucket of a soil removal system according to an embodiment of the present invention. As shown in Figure 3, an engaging portion 21 is suspended from the lower end of the bucket 20. In this embodiment, the engaging portion 21 has a weight attached to the lower end of a chain. In the soil removal system 1 of this embodiment, a tilting member 22 is provided above the soil hopper 10 in the movement path of the bucket 20. When the bucket 20 is moved toward directly above the input opening 11 of the soil hopper 10, the engaging portion 21 of the bucket 20 is configured to catch on the recess of the tilting member 22 just before reaching the input opening 11. With the engaging portion 21 of the bucket 20 engaged with the tilting member 22, the bucket 20 is moved further toward directly above the input port 11, and the wire 33 is extended to lower the upper part of the bucket 20. As a result, the bucket 20 tilts so that the upper part of the bucket 20 is lowered around the engaging portion 21. This causes the opening on the top surface of the bucket 20 to face downwards, and the soil inside the bucket 20 is fed into the soil hopper 10 from the input port 11.

[0017] The soil removal system 1 is equipped with a detection sensor 23 that detects the tilting of the bucket 20. The detection sensor 23 is a non-contact sensor that uses light or a laser. When the bucket 20 tilts, a part of the bucket 20 enters the detection area of ​​the detection sensor 23, and the detection sensor 23 is configured to detect the tilting of the bucket 20.

[0018] As shown in Figure 4, the stored soil volume calculation device 50 includes a calculation means 51 for calculating the amount of stored soil in the soil hopper 10, an input volume calculation means 52 for calculating the amount of soil to be input into the soil hopper 10, a bucket input volume calculation means 53 for calculating the total amount of soil input into the soil hopper 10, and a storage means 54. The soil storage volume calculation device 50 is composed of a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), HDD (Hard Disk Drive), I / F (Interface), etc. Each of the functions of the soil storage volume calculation device 50 is realized by the CPU executing a predetermined control program stored in a storage means 54 such as ROM or HDD.

[0019] The calculation means 51 calculates the amount of soil stored in the soil hopper 10 based on the distance from the distance measuring sensor 40 to the top surface of the soil in the soil hopper 10. The calculation means 51 calculates the amount of soil stored in a soil hopper 10 based on the average value of the distances measured by multiple distance measuring sensors 40 installed in that soil hopper 10. The storage means 54 has pre-stored data on the amount of stored soil, which defines the relationship between the distance from the distance measuring sensor 40 to the top surface of the soil in the soil hopper 10 and the amount of soil stored in the soil hopper 10. The calculation means 51 calculates the amount of soil stored in the soil hopper 10 by selecting the amount of soil stored that corresponds to the average value of the distances measured by each distance measuring sensor 40 from the soil storage amount data.

[0020] The input amount calculation means 52 calculates the amount of soil that the bucket 20 will input into the soil hopper 10 in one batch by comparing the amount of stored soil calculated by the calculation means 51 based on the measurement results of each distance sensor 40 before the soil is put into the soil hopper 10 with the amount of stored soil calculated by the calculation means 51 based on the measurement results of each distance sensor 40 after the bucket 20 has tilted and soil has been put into the soil hopper 10. The bucket input amount calculation means 53 calculates the total amount of soil and sand deposited into the soil hopper 10 based on the number of times the bucket 20 is tilted, as detected by the detection sensor 23. The bucket input amount calculation means 53 estimates the total amount of soil and sand deposited into the soil hopper 10 by assuming that a predetermined planned amount of soil and sand is loaded into the bucket 20.

[0021] The display means 60 displays the amount of soil stored in the soil hopper 10, calculated by the soil storage volume calculation device 50, so that the driver of the dump truck T (see Figure 1) can confirm it. As for the display means 60, for example, there is a configuration in which the amount of stored soil is displayed in stages using different colors on a bulletin board (such as an electronic bulletin board or monitor) provided on the support body 30 (see Figure 1). In addition, the display means 60 also includes a configuration in which the amount of stored soil is displayed on the screen of a mobile communication terminal such as a tablet installed in the driver's seat of the dump truck T (see Figure 1).

[0022] In the soil removal system 1 described above, as shown in Figure 1, the amount of soil stored in the soil hopper 10 is calculated using a distance measuring sensor 40 installed above the soil hopper 10. This system has a simple structure, reduces costs, and can be easily applied to existing soil hoppers 10. Furthermore, by using the soil removal system 1 of this embodiment, the amount of soil stored in each soil hopper 10 (remaining soil) at the end of each day's excavation work can be calculated, allowing for accurate planning of the number of dump trucks T required at the start of work the following day. Furthermore, in the soil removal system 1 of this embodiment, the amount of stored soil is calculated based on the average value of the distance from multiple distance measuring sensors 40 to the top surface of the soil in the soil hopper 10, thus improving the accuracy of calculating the amount of stored soil. Furthermore, in the soil removal system 1 of this embodiment, the amount of soil stored is calculated for each soil hopper 10, and the amount of soil stored in each soil hopper 10 can be accurately determined. This makes it possible to adjust the frequency at which dump trucks T are sent to each soil hopper 10, and ultimately optimize the soil removal operation.

[0023] In the soil removal system 1 of this embodiment, the total amount of soil (cumulative amount) to be deposited into the soil hopper 10 can be determined by the input amount calculation means 52 and the bucket input amount calculation means 53 of the soil storage volume calculation device 50 shown in Figure 4. Based on the total amount of soil deposited into the soil hopper 10, the progress of the excavation work and the operating rate of the bucket 20 can be determined. Furthermore, the difference between the total amount of soil and sand loaded into the soil and sand hopper 10 calculated by the loading amount calculation means 52 using the distance measuring sensor 40, and the total amount of soil and sand loaded into the soil and sand hopper 10 estimated by the bucket loading amount calculation means 53 from the number of times the bucket 20 is tilted, can be determined. For example, if the amount of soil loaded into the bucket 20 is often less than the planned amount, the total amount of soil loaded into the soil hopper 10, calculated using the distance sensor 40, will be less than the total amount of soil loaded into the soil hopper 10 estimated from the number of times the bucket 20 is tilted. In such cases, the efficiency of soil removal can be improved by instructing the workers to optimize the amount of soil loaded into the bucket 20.

[0024] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from its spirit. In the soil removal system 1 of this embodiment, as shown in Figure 2, multiple distance measuring sensors 40 are arranged directly above the inlet 11 of the soil hopper 10, but the arrangement of the distance measuring sensors 40 is not limited. For example, the distance measuring sensors 40 may be arranged above the inlet 11 of the soil hopper 10 and outside the inlet 11, and a signal may be output diagonally downward relative to the inlet 11 to measure the distance to the top surface of the soil inside the soil hopper 10. In the soil removal system 1 of this embodiment, as shown in Figure 1, soil is fed into the soil hopper 10 using a bucket 20, Reference examples of the present invention include: The configuration for introducing soil into the soil hopper 10 is not limited to any specific type. [Explanation of symbols]

[0025] 1. Soil Removal System 10. Soil hopper 11 Inlet 12 Outlet 20 buckets 21 Engaging part 22. Tilting member 23 Detection Sensors 30 Support 31 Arm 32 Conveying device 33 wires 40 Distance measuring sensor 50. Storage volume calculation device 51 Calculation means 52 Input amount calculation means 53 Bucket input amount calculation means 54 Memory means 60 Display means T Dump Truck

Claims

1. A bucket for transporting soil and sand, A soil hopper capable of storing the aforementioned soil and discharging the aforementioned soil downwards, A distance measuring sensor is installed above the input opening formed at the top of the aforementioned soil hopper, The system includes a storage volume calculation device for calculating the amount of soil stored in the soil hopper, The bucket is configured to tilt above the input opening of the soil hopper so that the soil in the bucket is fed into the soil hopper. The aforementioned soil storage volume calculation device is A detection sensor for detecting the tilting of the bucket, A bucket input amount calculation means that calculates the total amount of soil and sand that has been put into the soil and sand hopper based on the number of times the bucket has been tilted, An input amount calculation means for calculating the amount of soil to be input into the soil hopper by comparing the amount of soil stored before the soil is put into the soil hopper with the amount of soil stored after the soil is put into the soil hopper. A soil removal system characterized by comprising a calculation means for calculating the amount of soil to be stored based on the distance from the distance measuring sensor to the upper surface of the soil in the soil hopper.

2. Equipped with multiple distance measuring sensors, The aforementioned soil storage volume calculation device is The soil removal system according to claim 1, characterized in that the amount of stored soil is calculated based on the average value of the distance from each of the distance measuring sensors to the top surface of the soil in the soil hopper.

3. The aforementioned soil storage volume calculation device is The system includes a storage means for storing stored soil volume data that defines the relationship between the distance from the distance measuring sensor to the top surface of the soil in the soil hopper and the amount of stored soil. The soil removal system according to claim 1, characterized in that the calculation means calculates the amount of stored soil based on the amount of stored soil data.

4. Equipped with multiple soil hoppers, Each of the aforementioned soil hoppers is equipped with the aforementioned distance measuring sensor. The aforementioned calculation means The soil removal system according to claim 1, characterized in that the amount of soil stored is calculated for each of the soil hoppers.

5. The soil removal system according to claim 1, characterized in that it is equipped with a display means for displaying the amount of soil stored calculated by the soil storage volume calculation device.

6. The aforementioned display means is The soil removal system according to claim 5, characterized in that it is provided outside the soil hopper.

7. It is equipped with a tilting member installed above the aforementioned soil hopper, The bucket is configured to tilt above the input opening of the soil hopper so that the soil in the bucket is fed into the soil hopper. The aforementioned bucket is suspended from the conveying device, The lower part of the bucket is provided with an engaging portion that engages with the tilting member, The soil removal system according to claim 1, characterized in that the bucket is moved toward the above-ground opening of the soil hopper, and the engaging portion is engaged with the tilting member, thereby causing the bucket to tilt around the engaging portion.

Images