Ground improvement system

Abstract

The present invention provides a construction device that can supply power to the casing pipe and appropriately control the drive unit in real time. [Solution] The construction device 30 includes a casing pipe 33 that penetrates into the ground, and a rotary drive device 32 positioned in contact with the upper end of the casing pipe 33 in the longitudinal direction and controlling the rotation of the casing pipe 33. The construction device 30 also includes a lifting device 31 that controls the raising and lowering of the casing pipe 33, and a power transmission unit 230 that transmits power sent from the control device 20. The construction device 30 also includes a power receiving unit 330 that is in contact with the power transmission unit 230 and receives power transmitted from the power transmission unit 230 while the rotary drive device 32 and / or the lifting device 31 are being driven. Furthermore, the construction device 30 includes a first communication control unit 310 that controls a drive device 340 and a sensor 350 that are driven based on the power received by the power receiving unit 330 while the rotary drive device 32 and / or the lifting device 31 are being driven.

Description

Technical Field

[0001] The present invention relates to a construction device and a ground improvement system.

Background Art

[0002] Conventionally, in a construction method of compacting the surrounding ground by constructing sand piles in the ground, a technique has been proposed for penetrating a casing filled with granular materials such as sand and crushed stones to a predetermined depth and appropriately discharging the materials in the casing into the ground. Patent Document 1 discloses a compaction ground improvement method using a ground improvement system including a casing pipe. The compaction ground improvement method disclosed in Patent Document 1 penetrates the casing pipe to a predetermined depth in the ground while rotating it, discharges the sand material, and further creates a compacted sand pile by ramming it back.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The casing pipe of the ground improvement system used in the compaction ground improvement method disclosed in Patent Document 1 is mechanically connected to a rotation drive device and a lifting device, and is a device that penetrates into the ground while rotating by the force transmitted from the rotation drive device and the lifting device. Therefore, in the construction of ground improvement, it is difficult to collect construction data in real time from the casing pipe, control the drive device provided on the casing pipe, supply power, etc.

[0005] This invention has been made in view of the problems of the prior art. The object of this invention is to provide a construction device and a ground improvement system that can supply power to a casing pipe and appropriately control a drive device in real time. [Means for solving the problem]

[0006] A construction apparatus according to an aspect of the present invention is a construction apparatus for a method of compacting the ground by creating columnar objects in the ground, which is driven by control from a control device to create columnar objects, and comprises: a casing pipe that penetrates into the ground; a rotary drive device provided at a position in contact with the upper end in the longitudinal direction of the casing pipe and controlling the rotation of the casing pipe; a lifting device that controls the raising and lowering of the casing pipe; a drive device that discharges granular material for creating columnar objects from the lower end of the casing pipe after the casing pipe has penetrated into the ground; a power transmission unit that transmits power sent from the control device; a power receiving unit in contact with the power transmission unit and receiving power transmitted from the power transmission unit while the rotary drive device and / or lifting device are being driven; and a first communication control unit connected to the drive device and sensors and controlling the drive device and sensors that are driven based on the power received by the power receiving unit while the rotary drive device and / or lifting device are being driven.

[0007] Another aspect of the present invention relates to a ground improvement system comprising the above-described construction device and a control device for controlling the construction device, wherein the control device includes a second communication control unit that sends a control signal to a first communication control unit of the construction device upon user input, a control panel that controls a lifting device and a rotary drive device provided on the construction device upon user operation instructions, and a battery that transmits power to a power transmission unit. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a construction device and a ground improvement system that can supply power to a casing pipe and appropriately control the drive device in real time. [Brief explanation of the drawing]

[0009] [Figure 1] This figure illustrates the compaction method using sand piles in the ground improvement system according to this embodiment. [Figure 2] This is a diagram illustrating the compaction method using sand piles. [Figure 3] This is a block diagram showing the configuration of the ground improvement system according to this embodiment. [Figure 4A] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 4B] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 5A] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 5B] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 6A] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 6B] This is a schematic diagram illustrating the power supply for the ground improvement system according to this embodiment. [Figure 7A] This is a schematic diagram illustrating the power supply for a ground improvement system according to another embodiment. [Figure 7B] This is a schematic diagram illustrating the power supply for a ground improvement system according to another embodiment. [Modes for carrying out the invention]

[0010] The ground improvement system 10 and construction device 30 according to this embodiment will be described in detail below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0011] (Compaction method using sand piles) FIG. 1 is a diagram for explaining the compaction method by sand pile driving in the ground improvement system 10 according to the present embodiment. The method to which the ground improvement system 10 is applied in the present embodiment is a method of forming columnar objects in the ground by the ground improvement system 10 which is a compaction pile construction machine, and compacting the ground.

[0012] The ground improvement system 10 includes a control device 20 and a construction device 30. Specifically, the ground improvement system 10 drives the construction device 30 under the control from the control device 20 based on an operation instruction or the like by a user, and constructs a compaction pile.

[0013] The method of compacting the ground by forming columnar objects in the ground, for example, corresponds to the sand compaction pile method, the sand drain method, or the static compaction method in which the diameter of the pile body is expanded by returning the granular material discharged into the ground by the casing, and the surrounding ground is compacted. Further, the method may be the pressure injection type static compaction method in which a material obtained by mixing a fluidizing agent or cement into the granular material is pressure-injected into the ground, or the compaction grouting method.

[0014] The control device 20 of the ground improvement system 10 includes a wireless system operation panel 100, an operation panel 200, a second communication control unit 110, a control panel 210, and a battery 220. Details of the wireless system operation panel 100, the operation panel 200, the second communication control unit 110, the control panel 210, and the battery 220 will be described later.

[0015] The construction device 30 of the ground improvement system 10 includes a lifting device 31, a rotation drive device 32, a casing pipe 33 penetrating into the ground, and a hopper 34. The hopper 34 is provided on the upper end side in the longitudinal direction of the casing pipe 33, and is a part for charging granular bodies into the casing pipe 33. In the present embodiment, the granular body is, for example, sand.

[0016] The lifting device 31 has a lifting motor and power transmission means for transmitting the rotational force of the lifting motor to the casing pipe 33, and raises and lowers the casing pipe 33 in the ground. That is, the lifting device 31 controls the raising and lowering of the casing pipe 33. Further, the lifting device 31 is provided with a hydraulic pressure sensor (not shown) for detecting the hydraulic pressure during the raising and lowering operation of the casing pipe 33. Further, the lifting device 31 is provided with a depth gauge (not shown) for detecting the depth of the lower end of the casing pipe 33.

[0017] The rotary drive device 32 includes a rotary motor and is a mechanism for rotating the casing pipe 33 in an arbitrary direction. That is, the rotary drive device 32 is provided at a position contacting the upper end portion in the longitudinal direction of the casing pipe 33 and controls the rotation of the casing pipe 33. Further, the rotary drive device 32 is provided with a current sensor (not shown) for detecting the current value of the rotary motor.

[0018] The ground improvement system 10 penetrates the casing pipe 33 to a predetermined depth in the ground by the lifting device 31 and the rotary drive device 32. Further, the ground improvement system 10 discharges granular materials from the lower end of the casing pipe 33, and compacts the discharged granular materials by repeating the pulling-out process and re-penetration of the casing pipe 33. Further, the construction device 30 may include a device (speedometer) for measuring the penetration speed when the casing pipe 33 is penetrated into the ground.

[0019] In the example shown in FIG. 1, after the casing pipe 33 provided in the construction device 30 is penetrated to a predetermined depth in the ground by the lifting device 31 and the rotary drive device 32, the pile body is expanded in diameter and at the same time the N value between the piles is increased by finely vibrating. Note that the N value is a numerical value serving as a standard for obtaining the degree of compaction and strength of soil.

[0020] Figure 2 is a diagram illustrating the construction method. In step A of Figure 2, the casing pipe 33 is placed in a predetermined position and a certain amount of sand is fed in via the hopper 34. In step B, the casing pipe 33 is driven into the ground while being rotated by the rotary drive device 32. In step C, it is driven to a predetermined depth. In step D, the casing pipe 33 is pulled up to a predetermined height while the sand inside the casing pipe 33 is discharged. In step E, the casing pipe 33 is driven back in and the discharged sand and surrounding ground are compacted. In step F, the ground is constructed by wave construction, which involves repeatedly performing steps D and E in small increments to expand the diameter.

[0021] As described above, the casing pipe 33 is mechanically connected to the rotary drive unit 32 and is a device that penetrates the ground while rotating due to the force transmitted from the lifting device 31 and the rotary drive unit 32. Therefore, in conventional ground improvement systems, it is necessary to stop the rotation of the casing pipe in order to send power or control signals to the rotating body, the casing pipe. Also, in configurations where measuring instruments such as sensors are attached to the casing pipe, it is necessary to stop the rotation of the rotating body, the casing pipe, in order to check the acquired data. Therefore, in conventional configurations, it is difficult to collect data from the casing pipe in real time, control the drive unit attached to the casing pipe, and supply power during ground improvement work.

[0022] The ground improvement system 10 according to this embodiment enables the appropriate control of the drive unit 340 by supplying power to the casing pipe 33 in real time in the ground compaction method described above.

[0023] (Configuration of ground improvement system 10) Next, the details of this ground improvement system 10 will be described. Figure 3 is a block diagram showing the configuration of the ground improvement system 10 according to this embodiment. The ground improvement system 10 is composed of a control device 20 and a construction device 30.

[0024] (Configuration of the control device 20) As shown in Figure 3, the control device 20 is comprised of a wireless system control panel 100 and a control panel 200. The wireless system control panel 100 is comprised of, for example, a touch panel or a switch box, and transmits and receives data with the construction device 30 via the second communication control unit 110.

[0025] The wireless system control panel 100 acquires information input by the user that relates to the control of the construction device 30. The user corresponds to the operator of the compaction pile building machine, which is the ground improvement system 10. The information input by the user is sent to the construction device 30 via the second communication control unit 110.

[0026] Furthermore, the user may obtain information acquired by the sensor 350 provided on the construction device 30 via the second communication control unit 110. In this case, the information acquired via the second communication control unit 110 may be displayed on the wireless system control panel 100 for the user to access. Alternatively, the information acquired via the second communication control unit 110 may be accessed via a display device (not shown) such as a display connected to the second communication control unit 110.

[0027] The control panel 200 is connected to a control panel 210 that controls the lifting device 31, the rotary drive device 32, and the hopper 34. The control panel 210 sends information input by the user as control signals to the lifting device 31, the rotary drive device 32, and the hopper 34, which are located on the upper part of the casing of the construction device 30. The battery 220 is a device for storing power to supply to the construction device 30.

[0028] (Configuration of the construction device 30) As shown in Figure 3, the construction device 30 is composed of a lifting device 31, a rotary drive device 32, a casing pipe 33, and a hopper 34. In this embodiment, the construction device 30 also includes a power transmission unit 230.

[0029] The casing pipe 33 is equipped with a construction control unit 300. The construction control unit 300 is composed of a first communication control unit 310, a power receiving unit 330, a drive unit 340, and a sensor 350. The sensor 350 corresponds to the hydraulic sensor, depth gauge, current sensor, and / or speedometer described above. In this embodiment, the drive unit 340 discharges granular material for creating a columnar structure from the lower end of the casing pipe 33 after the casing pipe 33 has been driven into the ground.

[0030] The first communication control unit 310 of the construction control unit 300 transmits and receives data wirelessly with the second communication control unit 110. Specifically, the first communication control unit 310 of the construction control unit 300 drives the drive unit 340 based on control instructions from the second communication control unit 110. The first communication control unit 310 of the construction control unit 300 also transmits data acquired by the sensor 350 to the second communication control unit 110. In other words, the first communication control unit 310 and the second communication control unit 110 can communicate with each other wirelessly, and data is transmitted and received bidirectionally. Specifically, the first communication control unit 310 is connected to the drive unit 340 and the sensor 350, and controls the drive unit 340 and the sensor 350, which are driven based on the power received by the power receiving unit 330 while the rotary drive unit 32 and / or lifting device 31 are being driven.

[0031] The power receiving unit 330 receives power supplied from the power transmitting unit 230. The first communication control unit 310, the drive unit 340, and the sensor 350 are driven based on the power received by the power receiving unit 330.

[0032] Figure 4A is a diagram illustrating the power supply of the ground improvement system 10 according to this embodiment, and schematically shows a side view of the power transmission unit 230, the power receiving unit 330, the power transmission unit 331, and a part of the casing pipe 33 as seen from the side. Figure 4B is a diagram illustrating the power supply of the ground improvement system 10 according to this embodiment, and schematically shows a top view of the power transmission unit 230 shown in Figure 4A as seen from above. The examples shown in Figures 4A and 4B illustrate an example of a trolley-type power supply system.

[0033] As shown in Figures 4A and 4B, the casing pipe 33 is connected to the power receiving unit 330 and has a power transmission unit 331 at its longitudinal upper end for receiving power received by the power receiving unit 330. That is, the power receiving unit 330 is provided at the top of the casing pipe 33 via the power transmission unit 331. The power transmission unit 230 corresponds to the trolley wire 230a, which is a contact wire, and is in contact with the power receiving unit 330. Note that the trolley wire 230a and brush unit 230b (see Figures 5A and 5B), which correspond to the power transmission unit 230, will simply be referred to as "power transmission unit 230" unless it is necessary to explain them separately.

[0034] As shown in Figure 4B, the power transmission unit 230, which corresponds to the trolley wire 230a, is configured in a circular shape in plan view, and the power transmission unit 230 and the power receiving unit 330 remain in contact even while the casing pipe 33 is rotating. Specifically, the power receiving unit 330 moves along the trolley wire 230a in accordance with the rotation of the casing pipe 33. That is, the power receiving unit 330 receives power transmitted from the power transmission unit 230 while the rotary drive device 32 and / or lifting device 31 are being driven.

[0035] As a result, the ground improvement system 10 according to this embodiment can control (drive) the drive device 340 provided on the casing pipe 33 and collect data from the sensor 350 in real time. In other words, in the ground improvement system 10 according to this embodiment, the drive device 340 and the sensor 350 can be driven when the casing pipe 33 is rotating.

[0036] Figures 5A and 5B show other configurations of the power transmission unit 230 and power receiving unit 330 of the construction device 30 according to this embodiment. In the example shown in Figures 5A and 5B, the power receiving unit 330 is provided on the upper part of the casing pipe 33 in a circular shape having a predetermined thickness in the longitudinal direction of the casing pipe 33. The power transmission unit 230 is composed of a brush portion 230b that contacts the side surface of the power receiving unit 330. In other words, the example shown in Figures 5A and 5B is a slip ring type power supply method in which power can be transmitted to a rotating body by bringing a special brush portion 230b into contact with the surface of a metal ring to conduct electricity.

[0037] In the examples shown in Figures 5A and 5B, the power receiving unit 330 receives power transmitted from the power transmission unit 230 while the rotary drive unit 32 and / or lifting device 31 are in operation, enabling it to drive the drive unit 340 and the sensor 350. This allows the construction device 30 to control (drive) the drive unit 340 installed on the casing pipe 33 and collect data from the sensor 350 in real time.

[0038] Figures 6A and 6B show other configurations of the power transmission unit 230 and power receiving unit 330 of the construction device 30 according to this embodiment. In the example shown in Figures 6A and 6B, the power receiving unit 330 is provided in a circular shape on the upper part of the casing pipe 33, and the power transmission unit 230 is provided in a circular shape on the upper part of the power receiving unit 330. Furthermore, the power transmission unit 230 and the power receiving unit 330 are composed of circular conductors whose distance from the rotation axis of the casing pipe 33 is approximately equal. In this embodiment, the rotation axis of the casing pipe 33 is the center of the casing pipe 33 rotated by the rotary drive device 32, and corresponds to the center of a circle in a horizontal plane perpendicular to the longitudinal direction of the cylindrical casing pipe 33. That is, in the example shown in Figures 6A and 6B, power can be transmitted to the rotating body by being composed of a metal conductive ring in contact with the power transmission unit 230 and the power receiving unit 330.

[0039] In other words, in the examples shown in Figures 6A and 6B, the power receiving unit 330 receives power transmitted from the power transmission unit 230 while the rotary drive unit 32 and / or lifting device 31 are in operation, enabling it to drive the drive unit 340 and the sensor 350. This allows the construction device 30 to control (drive) the drive unit 340 installed on the casing pipe 33 and collect data from the sensor 350 in real time.

[0040] As described above, the construction device 30 according to this embodiment is a construction device 30 that is driven by control from the control device 20 to create columnar structures in the ground in a construction method for compacting the ground by creating columnar structures in the ground. The construction device 30 comprises a casing pipe 33 that penetrates into the ground, and a rotary drive device 32 that is provided at a position in contact with the upper end of the casing pipe 33 in the longitudinal direction and controls the rotation of the casing pipe 33. The construction device 30 also comprises a lifting device 31 that controls the raising and lowering of the casing pipe 33. Furthermore, the construction device 30 comprises a power transmission unit 230 that transmits power sent from the control device 20, and a power receiving unit 330 that is in contact with the power transmission unit 230 and receives power transmitted from the power transmission unit 230 while the rotary drive device 32 and / or the lifting device 31 are being driven. Furthermore, the construction device 30 includes a first communication control unit 310 that controls a drive unit 340 and a sensor 350 that are driven based on the power received by the power receiving unit 330 while the rotary drive unit 32 and / or lifting device 31 are being driven.

[0041] As a result, the ground improvement system 10 according to this embodiment can appropriately control the drive device 340 based on the power supplied to the casing pipe 33, even when the casing pipe 33 is being driven.

[0042] Furthermore, the power transmission unit 230 is composed of a circular trolley wire 230a, and the power receiving unit 330 may move along the trolley wire 230a in accordance with the rotation of the casing pipe 33. This allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0043] Furthermore, the power receiving unit 330 may be provided in a circular shape on the upper part of the casing pipe 33, and the power transmitting unit 230 may consist of a brush portion 230b that contacts the side surface of the power receiving unit 330. This allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0044] Furthermore, the power receiving unit 330 may be provided in a circular shape on the upper part of the casing pipe 33, and the power transmitting unit 230 may be provided in a circular shape on the upper part of the power receiving unit 330. This allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0045] The first communication control unit 310 and the second communication control unit 110 may communicate with each other via wireless communication. This allows the ground improvement system 10 according to this embodiment to drive the drive unit 340 even when the casing pipe 33 is rotating. Furthermore, the ground improvement system 10 can recognize information acquired by the sensor 350 via the first communication control unit 310 and the second communication control unit 110 even when the casing pipe 33 is rotating.

[0046] (Other embodiments) While embodiments have been described in detail with reference to the drawings, these embodiments are not limited to those described above. Furthermore, the components described above include those easily conceivable by those skilled in the art, and those that are substantially the same. Moreover, the configurations described above can be combined as appropriate. In addition, various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the embodiments.

[0047] Furthermore, although the above-described embodiment shows a configuration in which power stored in a battery 220 provided in the control device 20 is transmitted to the power transmission unit 230 of the construction device 30, this configuration is not limited to the embodiment. For example, if a power source is provided near the ground improvement system 10, the power source and the power transmission unit 230 of the construction device 30 may be connected by a power line, and power may be transmitted directly from the power source to the power transmission unit 230 of the construction device 30. In this configuration, there is no need to provide a battery 220 in the control device 20, and it is possible to reduce the amount of work required for charging the battery 220, etc.

[0048] Furthermore, in the above-described embodiment, a configuration was described in which the power transmission unit 230 and the power receiving unit 330 are in contact with each other during the transmission of power from the power transmission unit 230 to the power receiving unit 330. For example, the configuration of the construction device 30 is not limited to this configuration, and the power transmission unit 230 and the power receiving unit 330 may be separated while power is transmitted.

[0049] Figures 7A and 7B are diagrams illustrating the wireless power supply of the ground improvement system 10 according to this embodiment, and show the configuration of a non-contact trolley system. Figure 7A is a schematic diagram showing a part of the power transmission unit 230 and power receiving unit 330 in the non-contact trolley system. Figure 7B is a cross-sectional view obtained by cutting the schematic diagram of Figure 7A at a predetermined location.

[0050] As shown in Figure 7A, in the non-contact trolley system, the power transmission unit 230 is rail-shaped and, for example, in a plan view as shown in Figure 4B, is configured in a circular shape. In the non-contact trolley power supply system, the power receiving unit 330 moves along the rail.

[0051] As shown in Figure 7B, the power receiving unit 330 is equipped with a pickup coil 333 which has an E-type core. In the non-contact trolley system, power is supplied wirelessly from the induction wires 231 and 232 provided on the power transmitting unit 230 to the pickup coil 333. Therefore, power is supplied to the casing pipe 33 at predetermined timings, both when the rotating casing pipe 33 is rotating and when it is stationary.

[0052] Furthermore, the wireless power transfer (wireless power transmission) method according to the other embodiments described above applies a general high-frequency electromagnetic coupling method based on electromagnetic induction. Wireless power transfer methods include high-frequency electromagnetic coupling methods, magnetic field resonance methods, electric field coupling methods, and microwave wireless methods. By applying the high-frequency electromagnetic coupling method as the wireless power transfer method in this embodiment, it becomes possible to achieve wireless power transfer with superior environmental resistance to noise and contamination, as well as high power transfer efficiency, compared to other methods.

[0053] (Effects, etc.) The effects and advantages of this embodiment will be explained below.

[0054] (1) The construction device 30 according to the first aspect of this embodiment is a construction device 30 that is driven by control from a control device 20 to create columnar objects in a construction method for compacting the ground by creating columnar objects in the ground. The construction device 30 comprises a casing pipe 33 that penetrates into the ground, and a rotary drive device 32 that is provided at a position in contact with the upper end of the casing pipe 33 in the longitudinal direction and controls the rotation of the casing pipe 33. The construction device 30 also comprises a lifting device 31 that controls the raising and lowering of the casing pipe 33. The construction device 30 also comprises a drive device 340 that discharges granular material for creating columnar objects from the lower end of the casing pipe 33 after the casing pipe 33 has penetrated into the ground. Furthermore, the construction device 30 includes a power transmission unit 230 that transmits power sent from the control device 20, and a power receiving unit 330 that is in contact with the power transmission unit 230 and receives power transmitted from the power transmission unit 230 while the rotary drive unit 32 and / or lifting device 31 are being driven. The construction device 30 also includes a first communication control unit 310 that is connected to the drive unit 340 and the sensor 350 and controls the drive unit 340 and the sensor 350, which are driven based on the power received by the power receiving unit 330 while the rotary drive unit 32 and / or lifting device 31 are being driven.

[0055] This configuration allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even when the casing pipe 33 is being driven.

[0056] (2) The power transmission unit 230 of the construction device 30 according to the second aspect of this embodiment is composed of a circular trolley wire 230a, and the power receiving unit 330 may move along the trolley wire 230a in accordance with the rotation of the casing pipe 33.

[0057] This configuration allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0058] (3) The power receiving section 330 of the construction device 30 according to the third aspect of this embodiment may be provided in a circular shape on the upper part of the casing pipe 33, and the power transmitting section 230 may be composed of a brush section 230b that contacts the side surface of the power receiving section 330.

[0059] This configuration allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0060] (4) In the fourth aspect of this embodiment, the power receiving section 330 of the construction device 30 may be provided in a circular shape on the upper part of the casing pipe 33, and the power transmitting section 230 may be provided in a circular shape on the upper part of the power receiving section 330.

[0061] This configuration allows the construction device 30 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even while the casing pipe 33 is rotating.

[0062] (5) The ground improvement system 10 according to the fifth aspect of this embodiment is a ground improvement system 10 that includes the above-described construction device 30 and a control device 20 that controls the construction device 30. The control device 20 includes a second communication control unit 110 that sends a control signal to a first communication control unit 310 of the construction device 30 based on user input. The control device 20 also includes a control panel 210 that controls a lifting device 31 and a rotary drive device 32 provided on the construction device 30 based on user operation instructions. Furthermore, the control device 20 includes a battery 220 that transmits power to a power transmission unit 230.

[0063] This configuration allows the ground improvement system 10 to appropriately control the drive unit 340 based on the power supplied to the casing pipe 33, even when the casing pipe 33 is being driven.

[0064] (6) The first communication control unit 310 and the second communication control unit 110 of the ground improvement system 10 according to the sixth aspect of this embodiment may be able to communicate with each other by wireless communication.

[0065] This configuration allows the ground improvement system 10 to drive the drive unit 340 even when the casing pipe 33 is rotating. Furthermore, the ground improvement system 10 can recognize information acquired by the sensor 350 via the first communication control unit 310 and the second communication control unit 110 even when the casing pipe 33 is rotating. [Explanation of symbols]

[0066] 10. Ground Improvement System 20 Control device 30 Construction equipment 31 Lifting device 32 Rotary drive device 33 Casing pipe 34 Hopper 100 Wireless System Control Panel 110 Second Communication Control Unit 200 Control panel 210 Control Panel 220 batteries 230 Power Transmission Section 230a Trolley wire 230b Brush section 231, 232 Induction lines 300 Construction Control Unit 310 First Communication Control Unit 330 Power receiving section 331 Power Transmission Section 333 Pickup Coil 340 Drive unit 350 sensors

Claims

1. In a construction method for compacting the ground by creating columnar structures underground, the construction device is driven by control from a control device and creates the columnar structures, A casing pipe that penetrates the ground, A rotary drive device is provided at a position in contact with the upper end in the longitudinal direction of the casing pipe and controls the rotation of the casing pipe, A lifting device for controlling the raising and lowering of the casing pipe, After the casing pipe is driven into the ground, a drive device is provided to discharge granular material for forming the columnar object from the lower end of the casing pipe, A power transmission unit that transmits power sent from the control device, A power receiving unit, which is in contact with the power transmission unit and receives power transmitted from the power transmission unit while the rotary drive device and / or the lifting device are in operation, A construction apparatus comprising: a first communication control unit connected to the aforementioned drive unit and sensor, which controls the drive unit and sensor that are driven based on power received by the power receiving unit while the rotary drive unit and / or the lifting device are being driven.

2. The power transmission section is composed of a circular trolley wire, The construction apparatus according to claim 1, wherein the power receiving unit moves along the trolley wire in accordance with the rotation of the casing pipe.

3. The power receiving section is provided in a circular shape on the upper part of the casing pipe. The construction apparatus according to claim 1, wherein the power transmission unit is composed of a brush portion that contacts the side surface of the power receiving unit.

4. The power receiving section is provided in a circular shape on the upper part of the casing pipe. The construction apparatus according to claim 1, wherein the power transmission unit is provided in a circular shape on the upper part of the power receiving unit.

5. A ground improvement system comprising a construction device according to any one of claims 1 to 4, and a control device for controlling the construction device, The control device is A second communication control unit that sends a control signal to the first communication control unit of the construction device based on user input, A control panel controls the lifting device and the rotary drive device provided in the construction device according to the user's operating instructions, The system includes a battery that transmits power to the power transmission unit, Ground improvement system.

6. The ground improvement system according to claim 5, wherein the first communication control unit and the second communication control unit are capable of communicating with each other by wireless communication.

Images