JP2018084021A - Excavation earth removal device and excavation earth removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement an excavation earth removal device and excavation earth removal method, capable of preferably removing excavated earth.SOLUTION: An excavation earth removal device 100 comprises: a cylindrical body 10 installed on the upper part of a steel pipe pile P to be embedded in the ground, the cylindrical body having a side face on which an aperture 13a is formed; a first lifting device 20 disposed inside the cylindrical body 10; an excavating device 30 to be lifted or lowered by the first lifting device 20; a second lifting device 40 arranged outside the cylindrical body 10; and an excavated earth tank 50 to be lifted or lowered by the second lifting device 40. The excavating device 30 is configured to excavate the ground when descending inside the steel pipe pile P and carry excavated earth upwards when ascending inside the steel pipe pile P to remove the earth from the aperture 13a of the cylindrical body 10. The excavated earth tank 50 is configured to receive the earth removed from the aperture 13a of the cylindrical body 10 before descending to the vicinity of the ground and discharge the excavated earth in the tank before ascending to the cylindrical body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an excavation and earthing device and an excavation and earthing method that are used by being attached to an upper portion of a tubular body.

Conventionally, after the soil excavated by the auger device is stored in the soil discharge tank through the soil discharge port provided on the upper side surface of the casing, the soil discharge tank is lowered to the vicinity of the ground with a crane, and the bottom door of the tank is opened and stored. A soil removal process for discharging the soil is performed (for example, see Patent Document 1).
Further, an excavation and earthing device that directly installs on a pipe body such as a steel pipe or a PC pile and excavates the ground in the pipe body is known (for example, see Patent Document 2). This excavation earthing device has a cylindrical body in which an earth discharge port is formed, and after the earth removal is accommodated in the earth discharge tank through the earth discharge port of the cylindrical body, as in the above-described earth discharge processing. Then, the work of lowering the earth removal tank to the vicinity of the ground with a crane is performed.

  There is also known a soil removal device in which the soil excavated by the auger device supported by the leader is housed in a soil hopper from the upper opening of the pipe body (steel pipe pile) and the soil can be discharged near the ground. (For example, refer to Patent Document 3). The earth discharging hopper of this earth removing device has a structure in which the upper hopper part and the lower hopper part are connected via a bellows part or an elastic cylinder part (multistage cylinder shape or nested cylinder shape) that can be expanded and contracted. Yes. The earth removing device extends the bellows part or the telescopic cylinder part according to the earth removing amount to increase the amount of accumulated sediment, and discharges the earth while lowering the lower hopper part near the ground. After discharging the soil, the bellows portion or the telescopic cylinder portion is contracted again to take the excavation allowance of the auger device, and this series of operations is repeated.

JP 2005-299143 A JP 2013-227759 A Japanese Patent Laid-Open No. 11-200749

However, in the case of the above-mentioned patent documents 1 and 2, since a dedicated crane used for the soil removal process is required, there is a problem that the equipment cost and the labor cost of the crane operator are increased, and the construction cost increases. Furthermore, since a space for installing the crane is required, there is a problem that it is difficult to work in a narrow place. In addition, since a temporary road or the like for carrying the crane into the work site is required, there is a problem that the site is secured for that purpose and the construction period and cost increase accordingly.
In addition, since the crane operation is a visual confirmation work by the operator, the timing for aligning the soil removal tank suspended by the crane with the soil discharge port, and the timing for soil removal by moving the soil disposal tank to a predetermined location It will be different each time. Therefore, the excavation work is stopped during the soil removal process using the crane, and there is a problem that the construction period increases accordingly.

Further, in the case of the soil removal device of Patent Document 3, in the aspect in which the bellows portion is contracted and the lower side hopper portion is raised after discharging the soil from the lower hopper portion, the soil removal adhered to the inner surface of the bellows portion during the rise. May become clogged between the bellows, and the bellows part may not be able to shrink. Moreover, in the aspect which shrinks | contracts an expansion-contraction cylinder part and raises a lower side hopper part, there exists a possibility that a soil may leak from a cylinder pipe in addition to the problem that a soil will be clogged between cylinders at the time of a raise.
That is, this earth removal device has a problem that it is not suitable for the work of repeatedly raising and lowering the lower hopper.

  The objective of this invention is providing the excavation earthing apparatus and excavation earthing method which can discharge | emit the excavated earth excavation suitably.

In order to solve the above problems, the invention described in claim 1
A drilling and earthing device that is used by being attached to the upper part of a pipe body to be embedded in the ground,
A tubular body installed at the top of the tubular body and having an opening formed on a side surface;
A drilling rig installed inside the tube;
A lifting device disposed in the cylindrical body;
A soil removal tank that is moved up and down by the lifting device and moves along the tubular body and the tubular body;
With
The excavator is configured to discharge the soil excavated from the ground from the opening of the cylindrical body,
The earth removal tank accommodates the earth discharged from the opening of the cylindrical body, then descends along the pipe body, discharges the earth in the tank, and then rises to the cylindrical body. It is comprised as follows.

The invention according to claim 2 is the excavation and earthing device according to claim 1,
The tubular body is supported by a tubular body press-fitting machine installed in the vicinity of the ground,
The pipe press-fitting machine is provided with a tank engaging portion that is attached so as to pivotally support the earth discharging tank,
After the soil discharge tank descends and engages with the tank engaging portion, the soil discharge tank is inclined so as to rotate, and the soil discharge door provided in the soil discharge tank is opened. It is characterized by.

The invention according to claim 3 is the excavation and earthing device according to claim 2,
A distance detection unit for detecting a distance between the soil discharge tank descending along the tubular body and the tank engaging portion;
Based on the fact that the distance detecting unit detects that the distance between the soil discharging tank and the tank engaging portion is equal to or less than a predetermined threshold, the descending speed of the soil discharging tank by the lifting device is reduced. A descent speed switching control means for switching is provided.

The invention according to claim 4 is the excavation and earthing device according to claim 2 or 3,
The earth removal tank is provided with an inclination sensor for detecting the rotation angle of the earth removal tank,
Based on the fact that the inclination of the earth discharge tank has been detected by the inclination sensor at a predetermined angle at which the earth discharge door can be opened, the lowering of the earth discharge tank by the lifting device is stopped, Tank elevating control means for starting the raising of the soil discharge tank by the elevating device after a predetermined time is provided.

The invention according to claim 5 is the excavation and earthing device according to any one of claims 2 to 4,
The excavation and earthing device includes a rotation drive mechanism for rotating on the tube about the axis of the tube, and a geomagnetic sensor for the excavation and earthing device,
Based on the direction detected by the geomagnetic sensor for the excavation and earthing device, the rotary drive mechanism is operated so that the earthing tank is arranged vertically above the tank engaging portion. A rotation control means for switching the direction is provided.

The invention according to claim 6 is the excavation and earthing device according to claim 5,
The pipe press machine is provided with a geomagnetic sensor for the pipe press machine,
The rotation control means operates the rotary drive mechanism so as to match the azimuth detected by the geomagnetic sensor for the excavation and earthing device with the azimuth detected by the geomagnetic sensor for the tube press-fitting machine. The direction of the earth device is switched.

The invention according to claim 7 is the excavation and earthing device according to any one of claims 1 to 6,
The lifting device is a pair of winches, and the wires of the pair of winches are attached so as to support the soil discharge tank from both left and right sides,
The earth removal tank is provided with a left / right inclination sensor for detecting the right / left inclination of the earth removal tank,
Based on the left / right inclination of the soil discharge tank detected by the left / right inclination sensor, the winch is adjusted so as to relatively increase the rotation speed of the winch on the side inclined with respect to the moving direction of the soil discharge tank. Rotational speed switching control means for switching the rotational speed of the other winch is provided.

The invention according to claim 8 is the excavation and earthing device according to any one of claims 1 to 7,
A tank detector for detecting that the soil discharge tank is in a predetermined position covering the opening is provided.

The invention according to claim 9 is a method for excavating and discharging soil,
A step of accommodating the earth excavated by an excavator installed inside the pipe body embedded in the ground in the earth discharge tank on the upper side of the pipe body;
Discharging the soil from the soil discharge tank on the lower side of the tube after lowering the soil discharge tank containing the soil along the tube;
It is characterized by having.

  According to the present invention, excavated soil can be suitably discharged.

It is a side view which shows the excavation earth removal apparatus of this embodiment. It is a side view which shows the excavation earth removal apparatus of this embodiment. It is a side view which shows the excavation earth removal apparatus of this embodiment. It is a block diagram which shows the control system of an excavation earthing device. It is the side view (a) and front view (b) which expand and show an excavation earth removing apparatus. It is explanatory drawing (a) (b) (c) regarding the soil discharge attitude | position of a soil discharge tank. It is explanatory drawing (a) (b) (c) regarding adjustment of the raising / lowering attitude | position of a soil discharge tank. It is explanatory drawing (a) (b) (c) regarding the direction adjustment of the excavation earth removal apparatus which arrange | positions a earth discharge tank vertically above a tank engaging part. It is explanatory drawing (a) (b) (c) regarding the direction adjustment of the excavation earth removal apparatus which arrange | positions a earth discharge tank vertically above a tank engaging part. It is a flowchart which shows the operation | movement process which an excavation earth removal apparatus raises / lowers a earth removal tank.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a excavation and earthing device and an excavation and earthing method according to the present invention will be described in detail with reference to the drawings.
The excavation and earthing device of the present embodiment is a steel pipe pile, a steel pipe sheet pile, a PC pile, a casing, or the like that is embedded in the ground while being supported by a pipe press machine (pile press machine) installed near the ground. It is a device that is attached to the upper part of the tube.

As will be described later, the pipe press machine (pile press machine) is a device capable of self-propelling on a pile row, and is installed at the upper end of a pile (pipe body) protruding on the ground. It is designed to be installed in the vicinity.
This pipe press machine (pile press machine) is a pile (pipe body) embedded in the ground of the bottom of the water, and is installed at the upper end of the pile (pipe body) protruding above the water surface to perform the construction on the water. In this case, the tubular body presser (pile presser) is installed in the vicinity of the ground at the bottom of the water in a state where the pipe presser is installed in the vicinity of the water surface.

  As shown in FIGS. 1 to 3, for example, the excavation and earthing device 100 of the present embodiment is a steel pipe pile P supported by a pile presser 90 capable of self-propelling on a pile row to press-fit into the ground. It is attached to the upper part and has a function of assisting the press-fitting of the steel pipe pile P by excavating the inside of the steel pipe pile P in accordance with the press-fitting of the steel pipe pile P by the pile press-in machine 90.

First, the pile press-in machine 90 that self-propels on the pile row will be described.
For example, as shown in FIG. 1, the pile press-in machine 90 has a plurality (three in the figure) of gripping the upper end of an existing steel pipe pile P (steel pipe pile row) embedded in the ground by expanding the diameter from the inside. , A slide base 93 that can be moved back and forth with respect to the saddle 92, a leader mast 94 that can be swiveled to the left and right on the slide base 93, and a front face of the leader mast 94 that can be raised and lowered. A chuck device 95 that is attached and holds the steel pipe pile P, a main hydraulic cylinder 96 that drives the chuck device 95 up and down with respect to the leader mast 94, and the like are provided.
This pile press-fitting machine 90 obtains a reaction force from the steel pipe pile row held by the clamp device 91, lowers the chuck device 95 holding the steel pipe pile P, and releases the steel pipe pile P to raise the chuck device 95. By repeating this, the steel pipe pile P is repeatedly press-fitted into the ground for each stroke, and the steel pipe pile P is buried in the ground.
Further, by moving the slide base 93 forward, the chuck device 95 is moved horizontally to the front side without moving the saddle 92, and the tip of the existing steel pipe pile P held by the leading clamp device 91 is moved. Two steel pipe piles P can be press-fitted side by side.
And the pile press-in machine 90 performs the operation | movement which press-fits the new steel pipe pile P ahead of the existing steel pipe pile P with the chuck apparatus 95, and the operation | movement of the holding | grip and release of the upper end part of the existing steel pipe pile P by the clamp apparatus 91. By combining, it can self-propell on the steel pipe pile row which consists of the existing steel pipe pile P. Here, a state in which the pile presser 90 is self-propelled in the right direction in the drawing on the steel pipe pile row formed of the existing steel pipe piles P press-fitted into the ground is illustrated.
In addition, since the structure and operation | movement of the pile press-in machine 90 are the same as that of a conventionally well-known thing, it is not explained in full detail here.

Next, the excavation and earthing device 100 of this embodiment will be described.
As described above, the excavation and earthing device 100 is used by being attached to the upper portion of the steel pipe pile P held and supported by the chuck device 95 of the pile press-in machine 90.
As shown in FIGS. 1 to 3, the excavation and earthing device 100 includes, for example, a tubular body 10 installed on the upper portion of the steel pipe pile P, and a first lifting device disposed inside the tubular body 10. 20, a drilling device 30 that is moved up and down by the first lifting device 20 and moves inside the tubular body 10 and the steel pipe pile P, a second lifting device 40 disposed outside the tubular body 10, 2 The earth removal tank 50 etc. which are moved up and down by the raising / lowering apparatus 40 and move along the cylindrical body 10 and the steel pipe pile P are provided.
Further, the excavation and earthing device 100 includes a control unit 60 for controlling each part of the device as shown in FIG.

Further, the chuck device 95 of the pile press-in machine 90 is provided with a tank engaging portion 55 that is engaged so as to pivotally support a part of the soil discharge tank 50 that has descended near the ground.
Further, on the leader mast 94 of the pile presser 90, a geomagnetic sensor 97 for a pipe presser is provided.
The geomagnetic sensor 97 for the tubular body presser is a sensor that detects the direction in which the front of the pile presser 90 is facing. Here, the front side of the pile press-in machine 90 refers to the front side of the leader mast 94 to which the chuck device 95 is attached.
As shown in FIG. 4, the geomagnetic sensor 97 is wired or wirelessly connected to the control unit 60.
In addition, the tank engaging part 55 and the geomagnetic sensor 97 for the pipe press-fitting machine that are attached to the pile press-fitting machine 90 are also part of the configuration of the excavation and soil removal device 100.

  The cylindrical body 10 includes a base portion 11 fixed to a pile head of the steel pipe pile P, a pedestal 12 rotatably attached to the base portion 11, a cylindrical body main body 13 erected on the pedestal 12, and the like. I have.

The base part 11 has a holding part (not shown) that holds the pile head of the steel pipe pile P.
When the steel pipe pile P is rotationally press-fitted to the pedestal 12, a rotational drive mechanism 12 a that rotates the cylindrical body main body 13 in a direction opposite to the steel pipe pile P in synchronization with the rotation of the steel pipe pile P that is rotationally press-fitted. It is arranged.

The cylindrical body main body 13 is formed with an opening 13a for discharging the soil excavated by the excavator 30.
In addition, a tank detection unit 10 a that detects that the soil discharge tank 50 is in a predetermined position that covers the opening 13 a is provided on the side surface of the cylindrical body main body 13.
The tank detection unit 10a is, for example, a photoelectric sensor, and a laser is applied to a target (a distance detection unit 50a described later in this embodiment (see FIGS. 5A and 5B)) provided in the earth discharging tank 50. Light is irradiated to detect that the soil discharge tank 50 is in a predetermined position.
As shown in FIG. 4, the tank detection unit 10 a is connected to the control unit 60 by wire or wireless.

Further, a geomagnetic sensor 10b for excavation and earthing equipment is provided on the upper surface of the cylindrical body main body 13.
The geomagnetic sensor 10b for the excavation and earthing device is a sensor that detects the direction in which the front of the excavation and earthing device 100 is facing. Here, the front surface of the excavation and earthing device 100 is the front surface of the tubular body 10 (tubular body body 13), and refers to the surface on the side where the opening 13a is formed in the tubular body body 13.
As shown in FIG. 4, the geomagnetic sensor 10b is wired or wirelessly connected to the control unit 60.

The 1st raising / lowering apparatus 20 is a winch, for example, and raises / lowers the excavation apparatus 30 connected with the wire of the winch inside the cylindrical body 10 and the steel pipe pile P. As shown in FIG.
The excavator 30 includes an auger motor 31 and an auger screw 32 that rotates when the auger motor 31 is driven.
The excavator 30 excavates the ground when descending the steel pipe pile P, conveys the excavated soil excavated when ascending the interior of the steel pipe pile P, and the tubular body 10 (cylindrical body main body 13) has a function of discharging from the opening 13a.

The 2nd raising / lowering apparatus 40 is a pair of winches, for example, and raises / lowers the earth removal tank 50 connected with the wire of the winch along the cylindrical body 10 and the steel pipe pile P. As shown in FIG. The pair of winch wires are attached so as to support the soil discharge tank 50 from both the left and right sides (see FIGS. 5A and 5B).
Further, the wires of the pair of winches are respectively hung on pulleys 52 provided on the left and right sides of the lower part in the earth removal tank 50, and the tips of the wires are disposed on the front surface of the earth removal tank 50. It is fixed to the door 51 (see FIG. 5A).

The earth removal tank 50 is disposed so as to cover the opening 13a of the cylindrical body 10 (cylindrical body main body 13) while being pulled up by the second elevating device 40, and the earth discharged from the opening 13 is removed. After being accommodated, it is separated from the tubular body 10 (tubular body main body 13), descends to the vicinity of the ground, and has a function of releasing the soil in the tank. When the soil removal tank 50 is separated from the tubular body 10 (tubular body main body 13), the opening 13a is exposed.
Engagement shafts 53 engaged with a tank engagement portion 55 disposed in a chuck device 95 of the pile press-in machine 90 are provided on the left and right side surfaces of the lower part of the earth removal tank 50. When the engaged shaft 53 is engaged with the tank engaging portion 55, the soil discharging tank 50 is switched to a posture for discharging the soil in the tank.

Specifically, as shown in FIG. 6A, when the soil discharge tank 50 is lowered to the vicinity of the ground by the second elevating device 40, the engaged shaft 53 of the soil discharge tank 50 is connected to the tank engagement portion 55. Is engaged with the engaging groove 57 along the guide portion 56 and pivotally supported.
Even after the earth discharging tank 50 is engaged with the tank engaging part 55, the pair of winch wires are sent out by the second lifting device 40, so that the earth discharging tank 50 rotates as shown in FIG. 6B. Tilt forward as you do. At this time, when the lower rear surface of the soil discharge tank 50 abuts against the stopper 58 of the tank engaging portion 55, the rotation of the soil discharge tank 50 is stopped.
Further, as a pair of winch wires are sent out by the second lifting device 40, the soil discharge door 51 of the soil discharge tank 50 opens as shown in FIG. 6C, and the soil in the soil discharge tank 50 is discharged. Released.
Then, after discharging the soil in the soil discharge tank 50, the soil discharge tank 50 is raised to the tubular body 10 by the second lifting device 40.
When the earth removal tank 50 is raised by the second lifting device 40, first, the earth discharge door 51 is closed by being pulled by a pair of winch wires, and the inclined earth removal tank 50 is rotated backward. woken up.

Further, a distance detection unit 50 a that detects the distance between the soil discharge tank 50 that descends along the steel pipe pile P and the tank engaging portion 55 is provided on the side surface of the soil discharge tank 50.
The distance detection unit 50 a is, for example, a laser distance meter, and irradiates a laser beam toward a tank engaging part 55 provided in the chuck device 95, so that a distance between the soil discharge tank 50 and the tank engaging part 55 is obtained. Is supposed to be detected.
As shown in FIG. 4, the distance detection unit 50 a is connected to the control unit 60 by wire or wireless.

In addition, an inclination sensor 50 b that detects the inclination of the soil discharge tank 50 is provided on the front surface of the soil discharge tank 50.
The tilt sensor 50b functions as a front / rear tilt sensor that detects the front / rear tilt of the soil discharge tank 50 and also functions as a left / right tilt sensor that detects the left / right tilt of the soil discharge tank 50.
The inclination sensor 50b functioning as a front / rear inclination sensor detects a rotation angle at which the soil discharge tank 50 is inclined forward when the soil discharge tank 50 releases the soil in the tank.
The tilt sensor 50b functioning as a left / right tilt sensor detects the left / right tilt of the soil discharge tank 50 in which the soil discharge tank 50 is lifted / lowered by the second lifting / lowering device 40 (a pair of winches).
As shown in FIG. 4, the inclination sensor 50 b is connected to the control unit 60 by wire or wirelessly.

  The control unit 60 includes, for example, a CPU that performs various arithmetic processes, a RAM used as a work area of the CPU, a ROM that stores various control programs executed by the CPU, data, and the like. It is configured.

Then, the control unit 60 detects that the distance between the descending earth discharging tank 50 and the tank engaging portion 55 is equal to or less than a predetermined threshold by the distance detection unit 50a. It functions as a descending speed switching control means for switching so as to decelerate the descending speed of the soil discharge tank 50.
Specifically, the control unit 60 moves the second lifting / lowering device 40 so that the soil discharging tank 50 descends at the first speed until the distance between the descending soil discharging tank 50 and the tank engaging portion 55 reaches a threshold value of 80 cm. When the operation is controlled and the distance becomes 80 cm or less, the second elevating device 40 is controlled so that the earth removal tank 50 descends at a second speed slower than the first speed.
In this way, the soil removal tank 50 can be lowered quickly to a threshold distance, and then the soil removal tank 50 can be lowered by switching to a relatively slow speed. Will be engaged smoothly. Note that the threshold is not limited to 80 cm, and may be set to an arbitrary value by the apparatus user.

Further, the control unit 60 is based on the fact that the tilt sensor 50b as the front / rear tilt sensor detects that the tilt in the front / rear direction of the soil discharge tank 50 has reached a predetermined angle at which the soil discharge door 51 can be opened. The second lifting device 40 functions as tank lifting control means for stopping the wire feeding and starting the raising of the soil discharge tank 50 by the second lifting device 40 after a predetermined time.
Specifically, as shown in FIG. 6 (c), the control unit 60 controls the operation of the second lifting device 40 until the soil discharge tank 50 is tilted forward and the soil discharge door 51 opens to a predetermined angle. The second elevating device 40 is controlled to move up the earth removal tank 50 after a predetermined time.
More specifically, as shown in FIG. 6B, the control unit 60 tilts the soil discharge tank 50 forward by a predetermined angle and then operates the second lifting device 40 for a set time to send out the winch wire. Then, the earth removal door 51 is opened (see FIG. 6C), and the second elevating device 40 is controlled to raise the earth removal tank 50 after a predetermined time.
By maintaining the posture in which the soil discharge tank 50 is tilted forward and the soil discharge door 51 is opened for a predetermined time, the soil can be suitably discharged from the soil discharge tank 50.

Further, the control unit 60 delays the earth removal tank 50 moved up and down by the second elevating device 40 from the moving direction based on the left and right inclination of the earth removal tank 50 detected by the inclination sensor 50b as the right and left inclination sensor. It functions as a rotational speed switching control means for switching the rotational speed of one winch and the other winch of the second lifting device 40 so as to relatively increase the rotational speed of the winch on the inclined side.
Specifically, as shown in FIG. 7A, in the process of lowering the soil discharge tank 50 by the second lifting device 40, the soil discharge tank 50 is tilted in the left-right direction as shown in FIG. 7B. In this case, the control unit 60 relatively increases the rotational speed of the winch (here, the left winch (second lifting device 40) in the figure) on which the earth discharging tank 50 is inclined with respect to the moving direction. Next, the operation of the second lifting device 40 is controlled. By doing so, as shown in FIG. 7 (c), the tilted soil discharge tank 50 is corrected in posture, and the soil discharge tank 50 is positioned along the steel pipe pile P. The engagement portion 55 is smoothly engaged.
Even in the process of raising the soil removal tank 50 by the second lifting device 40, the second lifting device 40 is set so as to relatively increase the rotational speed of the winch on the side inclined with respect to the moving direction of the soil removal tank 50. By controlling the operation, the soil discharge tank 50 is arranged at a suitable position covering the opening 13a.

Further, the control unit 60 detects that the tank detection unit 10a has detected that the soil discharge tank 50 raised by the second lifting device 40 has reached a predetermined position covering the opening 13a. 40 functions as a tank rise / stop control means for stopping the rise of the soil discharge tank 50 by 40.
By doing so, the soil removal tank 50 automatically stops at a suitable position covering the opening 13a.

Further, the control unit 60 operates the rotary drive mechanism 12a so that the earth removal tank 50 is disposed vertically above the tank engaging part 55 based on the direction detected by the geomagnetic sensor 10b for the excavation earthing device. Thus, it functions as a rotation control means for switching the direction of the excavation and earthing device 100.
Specifically, as shown in FIG. 8A, the control unit 60 first detects the reference orientation in a state where the earth discharge tank 50 is disposed vertically above the tank engaging portion 55, and determines the reference orientation. Remember. Here, “northeast” is set as the reference orientation of the excavating and discharging apparatus 100.
Then, when the direction of the excavation and earthing device 100 deviates from the reference direction during the excavation and earthing process, the control unit 60 operates the rotary drive mechanism 12a so that the direction of the excavation and earthing device 100 returns to the reference direction. Control. For example, as shown in FIG. 8B, when the excavation and earthing device 100 is shifted counterclockwise in the drawing so as to face “north-northeast”, the control unit 60, as shown in FIG. The rotary drive mechanism 12a is controlled so that the excavation and earthing device 100 rotates in the clockwise direction in the drawing and faces the “northeast”.
By doing so, when the soil discharge tank 50 is lowered by the second lifting device 40, the soil discharge tank 50 can be suitably engaged with the tank engagement portion 55 to perform the soil removal process.
In addition, when the steel pipe pile P is rotationally press-fitted, the excavation and earthing device 100 is directed to the reference direction by continuously performing the operation control of the rotation drive mechanism 12a by the control unit 60 described above.

Further, the control unit 60 functioning as the rotation control means matches the direction detected by the geomagnetic sensor 10b for the excavation and earthing device with the direction detected by the geomagnetic sensor 97 for the tube press-fitting machine. It is also possible to switch the direction of the excavation and earthing device 100 by operating the.
Specifically, as shown in FIG. 9A, the azimuth detected by the geomagnetic sensor 10b for excavation and earthing equipment is “northeast”, and the azimuth detected by the geomagnetic sensor 97 for tube press-fitting machine is “northeast”. As shown in the figure, when the direction in which the front faces of the excavation and earthing device 100 and the pile presser 90 are the same, the earth removal tank 50 is disposed vertically above the tank engaging portion 55. In this state, Excavation and soil disposal can be performed.
By the way, when carrying out curve construction of a pile row | line | column, since the advancing direction of the pile presser 90 changes, the azimuth | direction where the excavation earthing device 100 and the front of the pile presser 90 face may shift | deviate.
For example, as shown in FIG. 9B, the direction detected by the geomagnetic sensor 10b for excavation and earthing equipment is “northeast”, and the direction detected by the geomagnetic sensor 97 for tube press-fitting machine is “east-northeast”. In addition, when the direction in which the front faces of the excavation and earthing device 100 and the pile presser 90 are shifted, the control unit 60 rotates the excavation and earthing device 100 clockwise as shown in FIG. 9C. Thus, the rotation drive mechanism 12a is controlled to face “east-northeast”.
Thus, when the excavation and earthing device 100 and the pile presser 90 are aligned in the direction in which the front faces, the earth removal tank 50 is lowered by the second lifting device 40 when the earth removal tank 50 is lowered. It is possible to carry out the soil removal process by suitably engaging with 55.

  Next, an operation process in which the excavation and earth removal device 100 according to the present embodiment moves up and down the earth removal tank 50 will be described based on the flowchart shown in FIG.

At the start of operation of the excavation and earthing device 100, the earth removal tank 50 is placed in a standby state so as to cover the opening 13a of the tubular body 10 (tubular body main body 13) (step S101).
In this standby state, the control unit 60 determines whether or not the excavator 30 has reached the top (step S102). Until the control unit 60 determines that the excavator 30 has reached the uppermost position (step S102; No), it remains in the standby state of step 101.

Then, as shown in FIG. 1, the control unit 60 determines that the excavator 30 that excavated the ground has reached the uppermost part (step S102; Yes), and the soil discharged from the opening 13a is discharged into the soil discharge tank 50. When housed inside, the control unit 60 controls the operation of the second lifting device 40 so that the soil discharge tank 50 is lowered at the first speed (step S103). At this time, the earth removal tank 50 is separated from the tubular body 10 (tubular body main body 13) and descends. Further, when the soil discharge tank 50 is separated from the tubular body 10 (tubular body main body 13), the opening 13a is exposed.
The control unit 60 controls the operation of the first lifting device 20 to lower the excavator 30 and excavate the ground in the steel pipe pile P.

Next, the control unit 60 determines whether there is a left / right tilt in the descending soil discharge tank 50 (step S104).
When it is determined by the control unit 60 that the left and right inclination has occurred in the soil discharge tank 50 (step S104; Yes), the control unit 60 performs feed adjustment for switching the rotation speed of the pair of winches (second lifting device 40). The posture of the earth discharging tank 50 tilted is corrected (step S105), and the earth discharging tank 50 continues to descend at the first speed.
On the other hand, when the left / right inclination of the soil discharge tank 50 is not detected (step S104; No), the control unit 60 determines whether the distance between the soil discharge tank 50 that descends and the tank engaging portion 55 is equal to or less than a predetermined threshold value. Is determined (step S106).

Until the control unit 60 determines that the distance between the descending soil discharging tank 50 and the tank engaging portion 55 is equal to or less than a predetermined threshold (step S106; No), the soil discharging tank 50 descends at the first speed. To continue.
On the other hand, when the control unit 60 determines that the distance between the descending soil discharge tank 50 and the tank engaging portion 55 is equal to or less than a predetermined threshold (step S106; Yes), the control unit 60 determines that the soil removal tank 50 The second elevating device 40 is controlled to move down at a second speed slower than the first speed (step S107).

Next, the control unit 60 determines whether there is a left / right inclination in the descending soil discharge tank 50 (step S108).
When it is determined by the control unit 60 that the left and right inclination has occurred in the soil removal tank 50 (step S108; Yes), the control unit 60 performs feed adjustment for switching the rotation speed of the pair of winches (second lifting device 40). The posture of the earth discharging tank 50 tilted is corrected (step S109), and the earth discharging tank 50 continues to descend at the second speed.
On the other hand, when the left / right inclination of the soil removal tank 50 is not detected (step S108; No), the control unit 60 determines whether or not the soil removal tank 50 is in a soiling posture inclined forward (step S110).

Until the control unit 60 determines that the soil removal tank 50 is in the soil removal posture inclined forward (Step S110; No), the second lifting device 40 is controlled to continue feeding the wire.
On the other hand, as shown in FIG. 3, when it is determined by the control unit 60 that the soil removal tank 50 is in a soil removal posture inclined forward (step S110; Yes), the control unit 60 The driving of the second lifting device 40 is stopped so as to restrict the movement (step S111).

Next, the control unit 60 determines whether or not a predetermined time has elapsed after stopping the driving of the second lifting device 40 (step S112). Here, it is determined whether or not the discharge of the soil has been completed from the tank by maintaining the soil removal posture in which the soil discharge tank 50 is tilted forward and the soil discharge door 51 is opened for a predetermined time.
The control unit 60 continues to stop driving of the second lifting device 40 until it is determined that a predetermined time has elapsed after the driving of the second lifting device 40 is stopped (Step S112; No).
On the other hand, when the control unit 60 determines that a predetermined time has elapsed after the driving of the second lifting device 40 is stopped (step S112; Yes), the control unit 60 moves the second lifting / lowering so as to raise the soil discharge tank 50. The operation of the device 40 is controlled (step S113).

Next, the control unit 60 determines whether or not the soil removal tank 50 has reached a predetermined position that covers the opening 13a of the tubular body 10 (tubular body main body 13) (step S114).
Until the control unit 60 determines that the soil removal tank 50 has reached a predetermined position covering the opening 13a (step S114; No), the soil removal tank 50 continues to rise.
On the other hand, when the control unit 60 determines that the soil discharge tank 50 has reached a predetermined position covering the opening 13a (step S114; Yes), the control unit 60 sets the first so as to stop the lift of the soil discharge tank 50. 2 The driving of the lifting device 40 is stopped (step S115).

When the control unit 60 determines that the excavation end operation has been performed (step S115; Yes), the excavation and earthing device 100 is stopped and the excavation and earthing processing is ended.
On the other hand, when the control unit 60 determines that the excavation end operation has not been performed (step S115; No), the control unit 60 returns to step S101, and the excavation earthing device 100 shifts to the standby state of the earthing tank 50.

  As described above, the excavation and earth removal device 100 according to the present embodiment temporarily removes the earth discharged from the opening 13a of the tubular body 10 (tubular body main body 13) installed on the steel pipe pile P. 50, the earth removal tank 50 can be lowered to the ground vicinity along the steel pipe pile P, and the earth discharge can be suitably discharged from the earth removal tank 50.

In particular, the excavation and earthing device 100 includes the distance detecting unit 50a that detects the distance between the earthing tank 50 that descends along the steel pipe pile P and the tank engaging portion 55, so that the earthing tank 50 that descends. The lowering speed of the soil discharging tank 50 can be switched in two stages according to the distance between the tank engaging portion 55 and the tank engaging portion 55.
In addition, the excavation and earthing device 100 includes the inclination sensor 50b that detects the inclination of the earthing tank 50 in the front-rear direction, so that it is determined that the earthing tank 50 is tilted forward to the earthing posture. Made possible.
In addition, the excavation and earthing device 100 includes the inclination sensor 50b that detects the inclination of the earthing tank 50 in the left-right direction, thereby correcting the posture of the earthing tank 50 tilted to the left and right. Can move up and down in a posture along the steel pipe pile P.
In addition, the excavation and earthing device 100 includes a tank detection unit 10a that detects that the earth removal tank 50 has reached a predetermined position covering the opening 13a of the cylindrical body 10 (cylindrical body main body 13). It was possible to determine that the soil removal tank 50 has become ready for soil removal.
Further, the excavation and earthing device 100 includes the geomagnetic sensor 10b for the excavation and earthing device and the geomagnetic sensor 97 for the tube press-fitting machine, so that the earth removal tank 50 is disposed vertically above the tank engaging portion 55. As described above, the orientation of the excavation and earthing device 100 can be switched.

  In this way, the excavation and earthing device 100 includes various sensors (distance detection unit 50a, inclination sensor 50b, tank detection unit 10a, geomagnetic sensor 10b for excavation and earthing device, and geomagnetic sensor 10b for excavation and earthing device). When the control unit 60 controls the operation of each part of the apparatus, it is possible to perform excavation and earthing processing by automatic operation of the excavation and earthing apparatus 100.

In contrast to the soil removal method of the excavation soil removal apparatus 100 of the present embodiment, the soil removal method using the soil removal apparatus of Patent Document 3 described above moves the soil all over the bellows part. As described above, the soil may adhere to the inner surface of the part and may not shrink when the bellows part is contracted. Further, when the bellows part is used in an extended state, the lower hopper part may be damaged by an impact when the soil is dropped from the sky. The same applies to the telescopic cylinder portion.
On the other hand, the earth removal tank 50 in the excavation earthing device 100 of the present embodiment is different from the conventional structure (the bellows part or the telescopic cylinder part) connected from the upper side to the lower side. After the soil is securely stored, it is separated from the tubular body 10 (tubular body main body 13) and lowered to discharge the soil. At this time, since the soil is not left on the track on which the soil discharging tank 50 moves, the discharging operation can be carried out smoothly.

In the above embodiment, the distance detection unit 50a that detects the distance between the soil discharge tank 50 and the tank engaging portion 55 is a laser distance meter. However, the present invention is not limited to this. For example, an ultrasonic sensor may be used. Further, the distance may be detected by image processing using an imaging device.
Further, the distance detection unit 50a is not limited to being provided in the soil discharge tank 50. For example, the distance detecting unit 50a is provided on the tank engaging part 55 side, and the distance between the soil discharging tank 50 and the tank engaging part 55 is detected by irradiating laser light toward the earth discharging tank 50. Good.
Further, a sensor for detecting the number of rotations of the winch of the second lifting device 40 is used as a distance detection unit, and the earth removal tank 50 and the tank descending along the steel pipe pile P on the basis of the length of the wire sent out from the winch. You may make it detect the distance with the engaging part 55. FIG.

The tank detection unit 10a is not limited to a photoelectric sensor, and may be another detection sensor such as an ultrasonic sensor.
Further, the tank detection unit 10 a is not limited to being provided in the cylindrical body main body 13. For example, the tank detection unit 10a is provided on the soil discharge tank 50 side, and the target disposed on the cylindrical body 13 is irradiated with laser light to detect that the soil discharge tank 50 is in a predetermined position. May be.
Moreover, the sensor which detects the rotation speed of the winch of the 2nd raising / lowering apparatus 40 is used as a tank detection part, and it detects that the soil removal tank 50 exists in a predetermined position on the basis of the length of the wire which the winch wound up. You may do it.

Further, in the above embodiment, the inclination sensor 50b as the front / rear inclination sensor is used to detect whether the inclination of the soil discharge tank 50 in the front / rear direction is a predetermined angle at which the soil discharge door 51 can be opened. Not limited to.
For example, using the sensor that detects the number of rotations of the winch of the second lifting device 40, the soil discharge door 51 is opened by the inclination of the soil discharge tank 50 in the front-rear direction based on the length of the wire sent out from the winch. It may be detected whether the predetermined angle is reached. In addition, the time for feeding the wire from the winch of the second lifting device 40 is controlled by a timer to control the operation so that the forward and backward inclination of the soil discharge tank 50 becomes a predetermined angle at which the soil discharge door 51 can be opened. May be.

  Moreover, although the excavation earth removal apparatus 100 in the said embodiment was attached and used for the upper part of the steel pipe pile P currently supported in order that the pile presser 90 which can be self-propelled on a pile row | line | column press-fits into this ground, The excavation and earthing device 100 can be mounted on a push-in casing of a large-diameter excavator, for example.

Moreover, in the said embodiment, although the 1st raising / lowering apparatus 20 was arrange | positioned inside the cylindrical body 10, you may arrange | position outside the cylindrical body 10. FIG. In this case, for example, a winch wire is turned to the inside of the cylindrical body 10 by using a sheave or the like so as to be connected to the excavator 30.
Moreover, in the said embodiment, although the 2nd raising / lowering apparatus 40 was arrange | positioned on the outer side of the cylindrical body 10, you may arrange | position on the inner side of the cylindrical body 10. FIG. In this case, for example, a winch wire is turned to the outside of the cylindrical body 10 by using a sheave or the like so as to be connected to the soil discharge tank 50.

  Moreover, in the said embodiment, although the ground was excavated using the excavation apparatus 30 which moves the inside of the cylindrical body 10 and the steel pipe pile P, it seems to excavate the ground using another conventionally well-known excavation apparatus. It may be.

  In addition, it is needless to say that other specific detailed structures can be appropriately changed.

DESCRIPTION OF SYMBOLS 10 Cylindrical body 10a Tank detection part 10b Geomagnetic sensor for excavation earthing machine 11 Base part 12 Base 12a Rotation drive mechanism 13 Cylindrical body 13a Opening part 20 1st raising / lowering apparatus 30 Excavating apparatus 40 2nd raising / lowering apparatus 50 Excavation Tank 50a Distance detector 50b Tilt sensor (Tilt sensor, Left / right tilt sensor)
51 Detaching Door 52 Pulley 53 Engagement Shaft 55 Tank Engagement Unit 56 Guide Unit 57 Engagement Groove 58 Stopper 60 Control Unit (Descent Speed Switching Control Unit, Tank Lift Control Unit, Rotation Speed Switching Control Unit, Rotation Control Unit)
100 Excavation and soil removal equipment 90 Pile presser (pipe presser)
91 Clamping Device 92 Saddle 93 Slide Base 94 Leader Mast 95 Chuck Device 96 Main Hydraulic Cylinder 97 Geomagnetic Sensor for Tube Press-in Machine P Steel Pipe Pile (Tube)

Claims (9)

A drilling and earthing device that is used by being attached to the upper part of a pipe body to be embedded in the ground,
A tubular body installed at the top of the tubular body and having an opening formed on a side surface;
A drilling rig installed inside the tube;
A lifting device disposed in the cylindrical body;
A soil removal tank that is moved up and down by the lifting device and moves along the tubular body and the tubular body;
With
The excavator is configured to discharge the soil excavated from the ground from the opening of the cylindrical body,
The earth removal tank accommodates the earth discharged from the opening of the cylindrical body, then descends along the pipe body, discharges the earth in the tank, and then rises to the cylindrical body. The excavation earthing device characterized by being constituted. The tubular body is supported by a tubular body press-fitting machine installed in the vicinity of the ground,
The pipe press-fitting machine is provided with a tank engaging portion that is attached so as to pivotally support the earth discharging tank,
After the soil discharge tank descends and engages with the tank engaging portion, the soil discharge tank is inclined so as to rotate, and the soil discharge door provided in the soil discharge tank is opened. The excavation and earthing device according to claim 1, wherein A distance detection unit for detecting a distance between the soil discharge tank descending along the tubular body and the tank engaging portion;
Based on the fact that the distance detecting unit detects that the distance between the soil discharging tank and the tank engaging portion is equal to or less than a predetermined threshold, the descending speed of the soil discharging tank by the lifting device is reduced. The excavation and earthing device according to claim 2, further comprising a descent speed switching control means for switching in this manner. The earth removal tank is provided with an inclination sensor for detecting the rotation angle of the earth removal tank,
Based on the fact that the inclination of the earth discharge tank has been detected by the inclination sensor at a predetermined angle at which the earth discharge door can be opened, the lowering of the earth discharge tank by the lifting device is stopped, The excavation and excavation device according to claim 2, further comprising tank lifting control means for starting the raising of the soil discharge tank by the lifting device after a predetermined time. The excavation and earthing device includes a rotation drive mechanism for rotating on the tube about the axis of the tube, and a geomagnetic sensor for the excavation and earthing device,
Based on the direction detected by the geomagnetic sensor for the excavation and earthing device, the rotary drive mechanism is operated so that the earthing tank is arranged vertically above the tank engaging portion. The excavation and earthing device according to any one of claims 2 to 4, further comprising a rotation control means for switching the direction. The pipe press machine is provided with a geomagnetic sensor for the pipe press machine,
The rotation control means operates the rotary drive mechanism so as to match the azimuth detected by the geomagnetic sensor for the excavation and earthing device with the azimuth detected by the geomagnetic sensor for the tube press-fitting machine. 6. The excavating and discharging device according to claim 5, wherein the direction of the soil device is switched. The lifting device is a pair of winches, and the wires of the pair of winches are attached so as to support the soil discharge tank from both left and right sides,
The earth removal tank is provided with a left / right inclination sensor for detecting the right / left inclination of the earth removal tank,
Based on the left / right inclination of the soil discharge tank detected by the left / right inclination sensor, the winch is adjusted so as to relatively increase the rotation speed of the winch on the side inclined with respect to the moving direction of the soil discharge tank. The excavation and earthing device according to any one of claims 1 to 6, further comprising a rotation speed switching control unit that switches a rotation speed of the other winch.   The excavation and excavation device according to any one of claims 1 to 7, further comprising a tank detection unit that detects that the excavation tank is in a predetermined position covering the opening. A step of accommodating the earth excavated by an excavator installed inside the pipe body embedded in the ground in the earth discharge tank on the upper side of the pipe body;
Discharging the soil from the soil discharge tank on the lower side of the tube after lowering the soil discharge tank containing the soil along the tube;
The excavation and earthing method characterized by having.

Images