JP2023179195A - Pile driving method and stationary machine - Google Patents

Abstract

To provide a pile driving method reduced in work labor and improved in work efficiency, in pile driving to each of multiple positions.SOLUTION: In a pile driving method, a stationary machine is juxtaposed in one side in the width direction of a traveling vehicle body of a construction machine, and in the movable state of a carriage in the longitudinal direction of the traveling vehicle body. Each of a front outrigger and a rear outrigger in the side in the width direction where the stationary machine is positioned, presses a base frame of the stationary machine vertically downward. In the pile driving method, in a state of the base frame pressed, while moving the carriage between the front outrigger and the rear outrigger, multiple positions are sequentially excavated using an auger, and piles are inserted into holes formed by excavation, using the construction machine, at each of the multiple positions.SELECTED DRAWING: Figure 7

Description

The present invention relates to a pile driving method, a stationary machine, and a construction machine.

Patent Document 1 discloses a pile driving method for driving a pile into the ground. In this pile driving method, piles are driven into the ground using a pile driving machine, which is a construction machine, and a stationary press-in device, which is a stationary machine separate from the pile driving machine. To drive piles into the ground, first, each of the pair of front outriggers of the pile driving machine presses the base frame of the stationary press-in device vertically downward. Then, with the base frame being pressed by the front outrigger, the auger attached to the leader of the pile driving machine is driven, and the auger performs excavation. Then, in a state where the base frame is pressed by the front outrigger and the pile is held by the leader of the pile driving machine and the stationary press-in device, the stationary press-in device is driven. This allows the pile to be inserted into the hole formed in the ground by the auger.

Japanese Unexamined Patent Publication No. 197324/1983

At a construction site or the like, piles are driven into the ground at each of a plurality of positions using, for example, the pile driving method described in Patent Document 1. In the work of driving piles into each of a plurality of positions, there is a need to reduce the labor involved in the work and improve work efficiency. Improving work efficiency by, for example, making it possible to excavate and insert piles into holes formed by excavation at several positions in close proximity to each other without moving stationary machinery. That is what is required.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a pile driving method that reduces work effort and improves work efficiency when driving piles into each of a plurality of positions. Our goal is to provide the following. Another object of the present invention is to provide a stationary machine and a construction machine used in the pile driving method.

In order to achieve the above object, a pile driving method according to an aspect of the present invention is provided such that piles are arranged on one side in the width direction of a running body of a construction machine with respect to the construction machine, and in a longitudinal direction of the running body of the construction machine. The stationary machine is disposed in a state in which the trolley is movable along the width direction of the traveling vehicle body, and each of the front outrigger and the rear outrigger on the side where the stationary machine is located in the width direction of the traveling vehicle body The base frame of the base frame is pressed vertically downward, and while the base frame is pressed, the trolley is moved between the front outrigger and the rear outrigger, and is attached to the trolley via a leader. using an auger to sequentially excavate a plurality of locations; and at each of the plurality of locations, using the construction machine to insert a pile into a hole formed by the excavation with the auger. .

According to the present invention, it is possible to provide a pile driving method that reduces work effort and improves work efficiency in driving piles into each of a plurality of positions. Moreover, a stationary machine and a construction machine used in the pile driving method can be provided.

FIG. 1 is a diagram of a construction machine and a stationary machine placed at predetermined positions, viewed from vertically above, in an example of work using the pile driving method according to the embodiment. FIG. 2 is a diagram of the state shown in FIG. 1 viewed from the front side of the traveling vehicle body of the construction machine. FIG. 3 is a diagram of the state shown in FIG. 1 viewed from one side in the width direction of the traveling vehicle body of the construction machine. FIG. 4 is an enlarged view of the range A1 in FIG. 2. As shown in FIG. FIG. 5 is a view from vertically above showing a state in which excavation is being performed with an auger of a stationary machine in an example of work using the pile driving method according to the embodiment. FIG. 6 is a diagram of the state shown in FIG. 5 viewed from the front side of the traveling vehicle body of the construction machine. FIG. 7 is a diagram illustrating a state in which a pile is inserted into a hole formed in the ground, viewed from vertically above, in an example of work using the pile driving method according to the embodiment. FIG. 8 is a diagram of the state shown in FIG. 7 viewed from the front side of the traveling vehicle body of the construction machine. FIG. 9 is a schematic diagram showing an example of a configuration in which an auger of a stationary machine is driven by hydraulic oil from a construction machine in the embodiment.

Hereinafter, embodiments will be described with reference to the drawings.

1 to 3 show a state in which a construction machine 1 and a stationary machine 2 are respectively arranged at predetermined positions in an example of work using the pile driving method according to the embodiment. In the example of FIGS. 1 to 3, a wheel crane is used as the construction machine 1, and a stationary excavator is used as the stationary machine 2. As shown in FIGS. 1 to 3, the construction machine 1 includes a traveling vehicle body 3 and a revolving body 5 connected to the traveling vehicle body 3 from the vertically upper side (arrow Z1 side). The construction machine 1 moves when the traveling vehicle body 3 performs a traveling operation. The rotating body 5 is capable of turning with respect to the traveling vehicle body 3 around a turning axis P that is parallel or substantially parallel to the vertical direction (directions indicated by arrows Z1 and Z2).

In the traveling vehicle body 3 of the construction machine 1, the longitudinal direction intersects (orthogonal or substantially orthogonal to) the vertical direction (the direction indicated by arrows X1 and X2), and the longitudinal direction intersects with both the vertical direction and the longitudinal direction. A (orthogonal or substantially orthogonal) width direction (direction indicated by arrow Y1 and arrow Y2) is defined. 1 is a diagram seen from the vertically upper side, FIG. 2 is a diagram seen from the front side of the traveling vehicle body 3, and FIG. 3 is a diagram showing the left side of the traveling vehicle body 3, which is one side in the width direction of the traveling vehicle body 3. It is a figure seen from the direction side (arrow Y1 side). In addition, in the revolving body 5, the longitudinal direction that intersects (orthogonal or approximately orthogonal to) the vertical direction, and the width direction that intersects (orthogonal or approximately orthogonal to) both the vertical direction and the longitudinal direction are specified. be done. In the states shown in FIGS. 1 to 3, the front side of the traveling vehicle body 3 (arrow X1 side) coincides with or substantially coincides with the front side of the rotating body 5, and the rear side of the traveling vehicle body 3 (arrow X2 side) coincides with the rotating body 5. Matches or almost matches the rear side of

A rear end of a boom 6 is connected to the revolving body 5 . The boom 6 extends in the longitudinal direction from the rear end to the front end. Further, the boom 6 can be raised and lowered with respect to the revolving body 5, and can be rotated with respect to the traveling vehicle body 3 about the rotation axis P together with the revolving body 5. Further, a pair of front outriggers 7A, 7B and a pair of rear outriggers 8A, 8B are attached to the traveling vehicle body 3. The front outriggers 7A, 7B are arranged on the front side of the traveling vehicle body 3 with respect to the turning axis P, and the rear outriggers 8A, 8B are arranged on the rear side of the traveling vehicle body 3 with respect to the turning axis P. In the example of FIG. 1, the front outrigger 7A and the rear outrigger 8A are arranged on the left side of the vehicle body 3, and the front outrigger 7B and the rear outrigger 8A are arranged on the right side of the vehicle body 3. Each of the front outriggers 7A, 7B and the rear outriggers 8A, 8B can extend outward in the width direction of the traveling vehicle body 3 and can be grounded on the ground.

The stationary machine 2 includes a base frame 11, a truck 12, a leader 13, and an auger 15. In the stationary machine 2, which is a stationary excavator, in the longitudinal direction (orthogonal or substantially orthogonal) to the vertical direction (the direction shown by arrow A width direction (direction indicated by arrow Y3 and arrow Y4) that intersects (perpendicularly or substantially perpendicularly to each other) is defined. In FIG. 2, the stationary machine 2 is shown as seen from one longitudinal side, and in FIG. 3, the stationary machine 2 is shown as seen from one side in the width direction. The base frame 11 includes a pair of rail parts 16A, 16B and a pair of cross parts 17A, 17B. The rail parts 16A, 16B are arranged apart from each other in the width direction of the stationary machine 2. Moreover, each of the rail parts 16A and 16B extends along the longitudinal direction of the stationary machine 2, and the rail parts 16A and 16B extend parallel or substantially parallel to each other.

Each of the cross portions 17A, 17B extends along the width direction of the stationary machine 2, and is spanned between the rail portions 16A, 16B. In the rail parts 16A and 16B, ends on one side in the longitudinal direction are connected by a cross part 17A, and ends on the opposite side from the cross part 17A in the longitudinal direction are connected by a cross part 17B. . The cross portions 17A and 17B are arranged apart from each other in the longitudinal direction of the stationary machine 2 and extend parallel or substantially parallel to each other. Since the rail portions 16A, 16B and the cross portions 17A, 17B are formed as described above, the base frame 11 has a rectangular shape or a substantially rectangular shape when viewed from the vertical direction. In the rectangular or substantially rectangular shape formed by the base frame 11, the dimension along the longitudinal direction is longer than the dimension along the width direction. Further, a space is formed in a region surrounded by the rail parts 16A, 16B and the cross parts 17A, 17B of the base frame 11.

In the base frame 11, a plate 18A is attached to the cross portion 17A, and a plate 18B is attached to the cross portion 17B. Each of the plates 18A and 18B projects outward in the longitudinal direction of the stationary machine 2 from one side to which the cross portions 17A and 17B are attached. Four jacks 20 are attached to the base frame 11. In the example of FIGS. 1 to 3, the connecting portion between the rail portion 16A and the cross portion 17A, the connecting portion between the rail portion 16B and the cross portion 17A, the connecting portion between the rail portion 16B and the cross portion 17A, and the connecting portion between the rail portion 16B and the cross portion 17A are shown. One jack 20 is attached to each connection portion between the cross portion 17B and the cross portion 17B. That is, one jack 20 is attached to each of the four corners of the aforementioned rectangular or substantially rectangular shape formed by the base frame 11. Each of the jacks 20 can be expanded and contracted in the vertical direction. By grounding each of the jacks 20 to the ground, the base frame 11 is supported to the ground. Further, by adjusting the expansion/contraction state of each jack 20, the base frame 11 is adjusted to be horizontal or approximately horizontal.

The trolley 12 is attached to the rail parts 16A, 16B so as to be movable relative to the base frame 11 along the longitudinal direction of the stationary machine 2. The trolley 12 is movable along the longitudinal direction in the range between the cross portions 17A and 17B. The trolley 12 includes a plate-shaped pedestal 21. In an example such as FIGS. 1 to 3, the pedestal 21 has a quadrangular shape or a substantially quadrangular shape when viewed from the vertical direction. The pedestal 21 is arranged such that the plate thickness direction coincides or substantially coincides with the vertical direction.

FIG. 4 shows an enlarged view of range A1 in FIG. As shown in FIG. 4 and the like, in the truck 12, flanged wheels 22 are installed on a surface of the pedestal 21 facing vertically downward. Four wheels 22 are attached to the pedestal 21, and one wheel 22 is attached to each of the four corners of the above-mentioned rectangular or substantially rectangular shape formed by the pedestal 21. A groove 23 that opens outward in the width direction of the stationary machine 2 is formed in each of the rail parts 16A and 16B. In each of the rail portions 16A, 16B, the groove 23 is formed continuously in the longitudinal direction between the cross portions 17A, 17B. Among the four wheels 22 of the truck 12, two wheels located on the side where the rail portion 16A is located engage with the grooves 23 of the rail portion 16A, and the remaining two wheels located on the side where the rail portion 16B is located. engages with the groove 23 of the rail portion 16B. Each of the wheels 22 engages with a corresponding groove 23 of the rail portions 16A, 16B so as to be movable along the longitudinal direction of the stationary machine 2. Therefore, the trolley 12 is movable in the longitudinal direction with respect to the base frame 11.

As shown in FIG. 1 and the like, the stationary machine 2 is provided with a truck power source 25. The truck power source 25 generates power to move the truck 12 and transmits the generated power to the truck 12. In an example such as FIGS. 1 to 3, the bogie power source 25 is arranged between the rail portions 16A and 16B in the width direction. In one example, the truck power source 25 includes a hydraulic cylinder. The truck is then moved by extending or contracting the hydraulic cylinder using hydraulic oil. In another example, the truck power source 25 includes a hydraulic motor, a winch, and a chain, and the chain is moved by driving the hydraulic motor with hydraulic oil. The carriage 12 is moved by the movement of the chain. Note that the configuration of the truck power source 25 is not limited to the example described above, as long as it transmits the power for moving the truck 12 to the truck 12.

Further, in the truck 12, brackets 26A, 26B, 27A, and 27B are formed on the surface of the pedestal 21 facing vertically upward. Brackets 26A, 26B are arranged apart from brackets 27A, 27B in the width direction of stationary machine 2 on the side where rail portion 16A is located. Furthermore, the brackets 26A, 26B are arranged apart from each other in the longitudinal direction of the stationary machine 2, and the brackets 27A, 27B are arranged apart from each other in the longitudinal direction of the stationary machine 2. Each of the brackets 26A, 26B, 27A, and 27B is formed at a corresponding one of the four corners of the above-mentioned rectangular or substantially rectangular shape formed by the base 21.

The leader 13 is attached to the base 21 of the cart 12 by, for example, a pin connection. The leader 13 is attached to the pedestal 21 so as to extend vertically upward from the pedestal 21 in a straight or substantially straight manner. The reader 13 is connectable to each of the brackets 26A, 26B, and is attached to the base 21 on a selected one of the brackets 26A, 26B. In the state shown in FIGS. 1 to 3, the leader 13 is attached to the bracket 26A.

The leader 13 is supported by two braces 31. One end of each of the columns 31 is connected to the vertically upper end of the leader 13. Further, the end of each of the pillars 31 on the opposite side from the side connected to the leader 13 can be connected to the brackets 26A, 26B, 27A, and 27B. When the reader 13 is attached to the bracket 26A, one of the two supports 31 connects between the bracket 26B and the vertically upper end of the reader 13, and the other of the two supports 31 connects the bracket 27A and the reader 13. Connect between the vertically upper end of the When the reader 13 is attached to the bracket 26B, one of the two supports 31 connects between the bracket 26A and the vertically upper end of the reader 13, and the other of the two supports 31 connects the bracket 27B and the reader 13. Connect between the vertically upper end of the Therefore, regardless of the state in which the leader 13 is attached to either of the brackets 26A, 26B, the two support columns 31 are arranged in an L-shape or a substantially L-shape when viewed from vertically above.

An auger 15 is attached to the leader 13. For this reason, the auger 15 is attached to the truck 12 via the leader 13. The auger 15 is attached to the leader 13 so as to protrude outward in the width direction of the stationary machine 2 with respect to the base frame 11, the truck 12, and the leader 13. Further, the auger 15 is attached to the leader 13 so as to be movable along the vertical direction with respect to the leader 13. Note that in the state shown in FIGS. 1 to 3, the leader 13 is attached to the bracket 26A, so the auger 15 is located at the position shown by the solid line in FIG. When the leader 13 is attached to the bracket 26B, the auger 15 is located at the position shown by the broken line in FIG.

Further, an auger power source 33 is attached to the leader 13 together with the auger 15. The auger power source 33 generates power to rotationally drive the auger 15 and transmits the generated power to the auger 15. The auger 15 is rotationally driven by the power from the auger power source 33, so that the auger 15 can excavate the ground. When the auger 15 moves along the vertical direction with respect to the leader 13, the auger power source 33 moves along the vertical direction together with the auger 15. Furthermore, when the cart 12 moves along the longitudinal direction of the stationary machine 2, the leader 13, auger 15, etc. move along the longitudinal direction together with the cart 12.

5 and 6 show a state in which excavation is being performed by the auger 15 in an example of work using the pile driving method according to the embodiment. FIG. 5 is a diagram viewed from vertically above. FIG. 6 is a view of the construction machine 1 viewed from the front side of the traveling vehicle body 3 and the stationary machine 2 viewed from one side in the longitudinal direction. As shown in FIGS. 5 and 6, the auger 15 of the stationary machine 2 can excavate the ground in a region adjacent to the outside in the width direction with respect to the rail portion 16A. Furthermore, the auger 15 is capable of excavating the ground in the region between the cross portions 17A and 17B in the longitudinal direction of the stationary machine 2. Excavation by the auger 15 forms a hole in the ground.

Further, at a work site or the like, a pile serving as a core material is inserted into a hole formed in the ground by excavation with the auger 15. That is, piles are built into holes (vertical holes) in the ground. This drives the pile into the ground. 7 and 8 show a state in which a pile 35 is inserted into a hole formed in the ground in an example of work using the pile driving method according to the embodiment. FIG. 7 is a diagram viewed from vertically above. FIG. 8 is a view of the construction machine 1 viewed from the front side of the traveling vehicle body 3 and the stationary machine 2 viewed from one side in the longitudinal direction.

As shown in FIGS. 7 and 8, a winch 36 is attached to the revolving body 5 of the construction machine 1. During work using a construction machine, the rope 37 let out from the winch 36 is extended toward the front side of the boom 6 along the rising side of the boom 6. A hook 38 is suspended from the front end of the boom 6 via a rope 37. The stake 35 is lifted by being hooked onto a hook 38 suspended from the front end of the boom 6. The pile 35 lifted as described above using the boom 6 of the construction machine 1 is inserted into the hole formed by excavation.

Further, the stationary machine 2 can be lifted using the boom 6 of the construction machine 1. When lifting the stationary machine 2, a hook different from the hook 38 is suspended from the front end of the boom 6 via a rope. The hook used to lift the stationary machine 2 can lift a heavier load than the hook 38. In the stationary machine 2, for example, a portion for hooking a hook is formed at the vertically upper end of the leader 13. Thereby, the stationary machine 2 can be lifted using the boom 6. By lifting the stationary machine 2 with the boom 6, the stationary machine 2 can be moved.

Furthermore, in the stationary machine 2, the auger 15 is driven (rotated) by the hydraulic oil supplied from the construction machine 1, and the cart 12 moves along the longitudinal direction. Further, in the stationary machine 2, each of the jacks 20 may be expanded or contracted by the hydraulic oil from the construction machine 1. FIG. 9 shows an example of a configuration in which the auger 15 is driven by hydraulic oil from the construction machine 1. Note that when the movement of the truck 12 and the extension or contraction of each of the jacks 20 are performed using hydraulic oil from the construction machine 1, the construction machine 1 can be moved from the stationary machine to the stationary machine in the same manner as the configuration of the example in FIG. 2, hydraulic oil is supplied.

In the example configuration of FIG. 9, the construction machine 1 is provided with a hydraulic pump 41, a tank 42, and switching valves 43 and 45. The hydraulic pump 41 and the switching valve 43 are connected via a flow path 46, and the hydraulic pump 41 discharges the hydraulic oil stored in the tank 42 to the flow path 46. Further, the tank 42 and the switching valve 43 are connected through a flow path 47, and the hydraulic oil is discharged to the tank 42 through the flow path 47. Furthermore, two flow paths 51 and 52 extend between the switching valves 43 and 45, respectively.

Further, in the example of FIG. 9 , two flow paths 55 and 56 each extend from the switching valve 45 to a hydraulic motor 53 that is an actuator that drives the winch 36 . In addition, two flow paths 57 and 58, which are separate from the flow paths 55 and 56, extend from the switching valve 45, respectively. In the example of FIG. 9 , a hydraulic motor 61 is provided in the auger power source 33 as an actuator that rotationally drives the auger 15 . Furthermore, in the stationary machine 2, each of the two flow paths 62 and 63 extends from the hydraulic motor 61. In the example of FIG. 9 , a connecting portion is formed in the construction machine 1 to connect each of the flow paths 57 and 58 to a flow path outside the construction machine 1 . In the aforementioned connection portions, the flow path 57 is connected to the flow path 62 via the coupler 65, and the flow path 58 is connected to the flow path 63 via the coupler 66.

The switching valve 43 can be switched to a neutral state, a first operating state, and a second operating state. In the neutral state, the flow paths 46, 47, 51, and 52 communicate with each other in the switching valve 43, and the switching valve 43 becomes so-called ABPT open. As a result, a pressure difference that rotates the hydraulic motors 53 and 61 is not generated, and the entire amount of hydraulic oil from the hydraulic pump 41 flows back to the tank 42, resulting in an unloaded (no-load) state. In the first operating state, in the switching valve 43, the flow path 46 communicates only with the flow path 51, and the flow path 47 communicates only with the flow path 52. Therefore, in the first operating state of the switching valve 43, hydraulic oil is supplied from the flow path 46 to the flow path 51, and hydraulic oil is discharged from the flow path 52 to the flow path 47. Furthermore, in the second operating state, in the switching valve 43, the flow path 46 communicates only with the flow path 52, and the flow path 47 communicates only with the flow path 51. Therefore, in the second operating state of the switching valve 43, hydraulic oil is supplied from the flow path 46 to the flow path 52, and hydraulic oil is discharged from the flow path 51 to the flow path 47.

The switching valve 45 is switchable between a first switching state and a second switching state. In the first switching state, in the switching valve 45, the flow path 51 communicates with the flow path 55, and the flow path 52 communicates with the flow path 56. Therefore, in the first switching state of the switching valve 45, hydraulic oil can be supplied to the hydraulic motor 53 via either of the flow paths 55, 56, and the winch 36 can be driven. Further, in the second switching state, in the switching valve 45, the flow path 51 communicates with the flow path 57, and the flow path 52 communicates with the flow path 58. Therefore, in the second switching state of the switching valve 45, hydraulic oil can be supplied to the hydraulic motor 61 via either of the flow paths 62, 63, and the auger 15 can be driven to rotate. Therefore, by setting the switching valve 45 to the second switching state, hydraulic oil can be supplied from the construction machine 1 to the stationary machine 2, and the auger 15 can be driven.

In this embodiment, the work of driving piles into the ground at each of a plurality of positions is performed using the construction machine 1 and the stationary machine 2 as described above. In the work of driving piles into each of a plurality of positions, first, soil curing is performed in the area where the stationary machine 2 is placed. At this time, for example, in the area where the stationary machine 2 is placed, ground curing is performed by laying a metal plate such as a steel plate on the ground.

Then, as shown in FIGS. 1 to 3, etc., the stationary machine 2 is placed in the area where the ground has been cured. At this time, by hoisting the stationary machine 2 as described above using the boom 6 of the construction machine 1, the stationary machine 2 is moved to the area where the stationary machine 2 is placed. The stationary machine 2 is arranged on one side in the width direction of the traveling vehicle body 3 in a state lined up with the construction machine 1. Further, the stationary machine 2 is arranged such that its longitudinal direction coincides or substantially coincides with the longitudinal direction of the traveling vehicle body 3. Therefore, in the stationary machine 2 disposed in the area where the ground is cured, the truck 12, auger 15, etc. are movable with respect to the base frame 11 along the front-rear direction of the traveling vehicle body 3.

Furthermore, in the stationary machine 2 disposed in an area where the ground is cured, the rail portion 16A is located further away from the traveling vehicle body 3 of the construction machine 1 than the rail portion 16B. In the stationary machine 2, the auger 15 protrudes from the base frame 11, the truck 12, and the leader 13 in the width direction toward the side opposite to the side where the traveling vehicle body 3 is located. Moreover, the stationary machine 2 is arranged with each of the four jacks 20 being grounded to the ground. Then, with the stationary machine 2 placed in the area where the ground has been cured, the base frame 11 is adjusted to be horizontal or approximately horizontal by adjusting the expansion and contraction states of the jacks 20. At this time, for example, each of the jacks 20 is expanded or contracted using hydraulic oil supplied from the construction machine 1, and the base frame 11 is adjusted to be horizontal or approximately horizontal.

Then, with the construction machine 1 and the stationary machine 2 arranged as described above, each of the front outrigger 7A and the rear outrigger 8A of the construction machine 1 is extended outward in the width direction of the traveling vehicle body 3. Then, the base frame 11 of the stationary machine 2 is pressed vertically downward by each of the extended front outriggers 7A and rear outriggers 8A. That is, the base frame 11 is pressed vertically downward by each of the front outrigger 7A and the rear outrigger 8A on the side where the stationary machine 2 is located in the width direction of the traveling vehicle body 3. At this time, the front outrigger 7A presses the plate 18A, and the rear outrigger 8A presses the plate 18B. In a state where each of the front outrigger 7A and the rear outrigger 8A presses the base frame 11, the trolley 12 is movable along the longitudinal direction of the stationary machine 2 between the front outrigger 7A and the rear outrigger 8A. Further, each of the front outriggers 7B and the rear outriggers 8B on the side opposite to the side where the stationary machine 2 is located in the width direction of the traveling vehicle body 3 is extended outward in the width direction of the traveling vehicle body 3. Each of the extended front outriggers 7B and rear outriggers 8B is grounded to the ground.

Then, as shown in FIGS. 5 and 6, with each of the front outrigger 7A and the rear outrigger 8A pressing the base frame 11, the auger 15 is moved vertically downward along the leader 13, and the auger 15 is moved vertically downward along the leader 13. (Auger screw) 15 is driven to rotate. As a result, the ground is excavated and a hole (vertical hole) is formed in the ground. At this time, for example, the auger 15 is rotationally driven by hydraulic oil supplied from the construction machine 1. Further, in this embodiment, while moving the cart along the longitudinal direction of the stationary machine 2, the auger 15 sequentially excavates at a plurality of positions. At this time, the trolley 12 is moved using, for example, hydraulic oil supplied from the construction machine 1. Further, the truck 12 moves between the front outrigger 7A and the rear outrigger 8A.

Since excavation is performed by the auger 15 as described above, in the pile driving method of this embodiment, the pile is adjacent to the stationary machine 2 on the side opposite to the side where the traveling vehicle body 3 is located in the width direction, and The ground is excavated at each of a plurality of positions in the region between the front outrigger 7A and the rear outrigger 8A in the longitudinal direction of the stationary machine 2 (the longitudinal direction of the construction machine 1). The locations where excavation takes place are located at a distance from each other in the longitudinal direction of the stationary machine 2. Further, a hole is formed in the ground at each of the plurality of locations where excavation is performed.

Then, as shown in FIGS. 7 and 8, the piles 35 are inserted (erected) into holes formed in the ground at each of the plurality of excavated positions. At this time, the construction machine 1 is used to insert the pile 35 into the hole. That is, in the construction machine 1, the revolving body 5 is rotated, and the hook 38 suspended from the front end of the boom 6 is hooked onto the stake 35. Thereby, the pile 35 is lifted by the construction machine 1. Then, the construction machine 1 inserts the pile 35 lifted as described above into the hole formed by excavation. Then, in each of the plurality of excavated positions, the piles 35 are driven into the formed holes as described above.

When the piles 35 are driven in all of the plurality of excavated positions, the pressure on the base frame 11 by the front outriggers 7A and the rear outriggers 8A is released. Then, the stationary machine 2 is moved from the area where it was placed. At this time, the stationary machine 2 is moved by lifting the stationary machine 2 using the boom 6 of the construction machine 1 as described above. The construction machine 1 moves the lifted stationary machine 2 to, for example, an area where pile driving will be performed next. Then, even in the area to which the stationary machine 2 has been moved, piles are driven in each of the plurality of positions using the construction machine 1 and the stationary machine 2 as described above.

In this embodiment, since the piles 35 are driven as described above using the construction machine 1 and the stationary machine 2, excavation can be performed at a plurality of positions close to each other without moving the stationary machine 2. And it becomes possible to insert the pile 35 into the hole formed by the excavation. Therefore, in the pile driving work, the number of times the stationary machine 2 is moved is reduced, and the effort required for the work is reduced. Therefore, work efficiency is improved in the pile driving work.

Further, in this embodiment, excavation and insertion of the pile 35 into the hole are performed with the front outrigger 7A and the rear outrigger 8A of the construction machine 1 pressing the base frame 11. Therefore, the reaction force to each of the excavation and the insertion of the pile 35 is received not only by the stationary machine 2 but also by the front outrigger 7A and the rear outrigger 8A. As a result, the stationary machine 2 including the base frame 11 is stably placed on the ground during each of the excavation and the insertion of the piles 35. Further, in this embodiment, in order to stably arrange the stationary machine 2, the front outrigger 7A and the rear outrigger 8A of the construction machine 1 are used as described above. Therefore, in order to stably arrange the stationary machine 2, there is no need to separately perform work such as installing the counterweight on the base frame 11. Therefore, work efficiency is further improved in the pile driving work.

Moreover, in this embodiment, it is possible to move the stationary machine 2 using the construction machine 1 provided with the front outrigger 7A and the rear outrigger 8A. That is, by lifting the stationary machine 2 using the boom 6 of the construction machine 1, the stationary machine 2 can be moved. Therefore, it is not necessary to provide a machine for moving the stationary machine 2, a machine for assembling and disassembling the stationary machine 2, etc. separately from the construction machine 1. Moreover, since the stationary machine 2 can be moved without dismantling it, the work efficiency is further improved in the pile driving work.

Furthermore, in this embodiment, movement of the truck 12, driving of the auger 15, etc. are performed by supplying hydraulic oil from the construction machine 1. That is, a supply source of hydraulic oil to the stationary machine 2 is provided in the construction machine 1. Therefore, movement of the truck 12, driving of the auger 15, etc. can be performed appropriately without providing a supply source of hydraulic oil separately from the construction machine 1.

In the above-described embodiments, the case where the stationary machines 2 are arranged side by side on the left side with respect to the traveling vehicle body 3 has been described, but in one example, the stationary machines 2 are arranged side by side on the right side with respect to the traveling vehicle body 3. With the type machines 2 arranged side by side, the piles 35 may be inserted into the holes regulated by excavation and excavation as described above. In this case, the front outrigger 7B and the rear outrigger 8B each press the base frame 11 vertically downward, and the auger 15 excavates and the pile 35 is inserted. Moreover, the piles 35 are driven into the ground at each of a plurality of positions while the truck 12 is moved between the front outrigger 7B and the rear outrigger 8B. This example also provides the same functions and effects as those of the above-described embodiments.

Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention at the implementation stage. Moreover, each embodiment may be implemented by appropriately combining them as much as possible, and in that case, the combined effects can be obtained. Further, the embodiments described above include inventions at various stages, and various inventions can be extracted by appropriately combining the plurality of disclosed constituent elements.

DESCRIPTION OF SYMBOLS 1... Construction machine, 2... Stationary machine, 3... Traveling vehicle body, 5... Swivel body, 6... Boom, 7A, 7B... Front outrigger, 8A, 8B... Rear outrigger, 11... Base frame, 12... Dolly, 13... Leader, 15... Auger, 16A, 16B... Rail part, 17A, 17B... Cross part, 18A, 18B... Plate, 20... Jack, 21... Pedestal, 22... Wheel, 25... Dolly power source, 33... Auger power source, 35...Pile.

The present invention relates to a pile driving method and a stationary machine .

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a pile driving method that reduces work effort and improves work efficiency when driving piles into each of a plurality of positions. Our goal is to provide the following. Another object of the present invention is to provide a stationary machine for use in the pile driving method.

According to the present invention, it is possible to provide a pile driving method that reduces work effort and improves work efficiency in driving piles into each of a plurality of positions. Furthermore, a stationary machine for use in the pile driving method can be provided .

Claims (5)

A stationary machine is arranged on one side in the width direction of a running body of the construction machine in a state in which it is lined up with the construction machine and is movable along the longitudinal direction of the running body of the construction machine. and,
Pressing the base frame of the stationary machine vertically downward with each of a front outrigger and a rear outrigger on the side where the stationary machine is located in the width direction of the traveling vehicle body;
While the base frame is pressed, while moving the truck between the front outrigger and the rear outrigger, a plurality of locations are sequentially excavated using an auger attached to the truck via a leader. And,
Inserting a pile into a hole formed by excavation by the auger at each of the plurality of positions using the construction machine;
A pile driving method comprising: Claim further comprising moving the stationary machine by releasing the pressure on the base frame by the front outrigger and the rear outrigger and lifting the stationary machine using a boom of the construction machine. 1. Pile driving method. The pile driving method according to claim 1, further comprising moving the truck and driving the auger by supplying hydraulic oil from the construction machine. A stationary machine used in the pile driving method according to any one of claims 1 to 3,
comprising the base frame, the truck, the leader, and the auger;
Stationary machine. A construction machine used in the pile driving method according to any one of claims 1 to 3,
comprising the traveling vehicle body, the front outrigger, and the rear outrigger;
Construction machinery.