JP6208995B2 - Pile driver - Google Patents

Description

  The present invention relates to a pile driving device for driving a pile such as a steel pile or a spiral pile into the ground, and more specifically, it is possible to quickly and continuously perform installation, placement and movement, and it is difficult to work. The present invention relates to a pile driving device suitable for driving a pile at a location.

  Various pile driving devices for driving piles into the ground are known, but as a pile driving device for use in a narrow place where heavy machinery cannot be used, for example, for foundation construction disclosed in Patent Document 1 There is a device. This foundation construction device is provided along a support plate such that a ground plate having an opening, a support column in which a plurality of the support plates are erected on the ground plate across the opening, and a rotating shaft is positioned substantially directly above the opening. It is equipped with a rotary drive unit that can be moved and a cutting rod, rotary pile, or sampler tube that can cut the ground attached to the rotary drive unit. It is possible to install piles without using a car, and it is also possible to improve the ground and to collect ground samples with a sampler tube.

  On the other hand, a spiral pile having spiral blades around the steel pipe exhibits a supporting force at the blade diameter, and thus has a larger vertical and drawing support characteristic than the pile diameter. In addition, small-diameter spiral piles can be constructed with a torque wrench and are excellent for construction in narrow spaces.

JP 2012-31680 A

  By the way, in recent years, it is possible to install a movable platform fence along the side edge of the platform in order to prevent passengers from coming into contact with the train entering the station or falling on the track. Has been done. When installing a movable platform fence, it is necessary to pull out the wind load and install it in a narrow space.

  However, since the opening for placing the pile is provided in the center of the base portion, the foundation construction device disclosed in Patent Document 1 is movable when the movable home fence is used for installation work. Is located near the side edge of the platform, so a part of the foundation construction equipment frame protrudes from the side edge of the platform to the outside (track side) and the foundation construction equipment cannot be stably placed. There's a problem.

  Moreover, the installation work of the movable platform fence needs to be performed in the middle of the night when the train operation is stopped, and it is required to perform the installation work safely within about 3 hours. Therefore, it is necessary to perform installation, placing, and movement quickly and continuously. In this regard, although the basic construction apparatus of Patent Document 1 is small, it is necessary to prepare a vehicle, a carriage, or the like for transportation, and when a large number of placements are required, a quick response is possible. There was a problem that there was a possibility that it could not be done.

  Therefore, the present invention is used even if the place to be placed is limited, for example, near the side edge of the platform or near the wall, and the work place is narrow and difficult to construct with a large heavy machine. It is an object of the present invention to provide a pile driving device that can be used.

  Moreover, an object of this invention is to provide the pile driving device which can perform installation, setting, and a movement rapidly and continuously.

In order to solve the above problems, the present invention according to claim 1 is a pile driving device for driving a pile on a construction surface, and an opening formed at a position closer to the side edge than the center of the base. And the holding means for arranging the piles in the opening is arranged to surround the part or the whole of the opening, and each of the four supports is provided upright and upright, including two support columns. A moving frame, a positioning mechanism that moves the moving frame in the horizontal direction of front , rear, left, and right, and a vertical position of the pile by moving the pillars up and down independently by a jack And a leveling mechanism .

In order to solve the above-mentioned problem, the present invention described in claim 2 is characterized in that, in the pile driving device described in claim 1 , a wheel capable of being flipped up is attached to the base portion.

In order to solve the above-mentioned problem, the present invention according to claim 3 is the pile driving apparatus according to claim 1 or 2 , wherein the pile is a spiral pile having spiral blades around the pile. The rotary drive member for rotationally press-fitting is provided with a booster to be detachably connected.

In order to solve the above problems, the present invention according to claim 4 is the pile driving device according to claim 3 , wherein the base portion is a reaction force receiver that receives a reaction force when the spiral pile is rotationally press-fitted. It is characterized by having.

  According to the pile driving device according to the present invention, since the opening for driving the pile is provided at a position closer to the side edge than the center of the base, for example, near the side edge of the platform or near the wall. There is also an effect that can be installed safely and piles can be driven. Therefore, it is possible to easily use even a narrow place where the work place is narrow and construction with a large heavy machine is difficult.

  Moreover, according to the pile driving device according to the present invention, since it is equipped with wheels that can be flipped up, it is easy to move, and since it is equipped with a positioning mechanism and a horizontal adjustment mechanism, the driving position of the pile is quickly determined. Therefore, there is an effect that the installation, placement and movement can be performed quickly and continuously.

  Furthermore, according to the pile driving device according to the present invention, when the pile is a spiral pile, the pile driving device is provided with the reaction force receiving member that receives the reaction force when the spiral pile is rotationally pressed into the base portion. There is an effect that the spiral pile can be reliably rotationally press-fitted without causing a positional shift.

It is a front view of one desirable embodiment of a pile driving device concerning the present invention. It is a top view of the pile driving device shown in FIG. It is a side view of the pile driving device shown in FIG. It is a perspective view which shows the periphery structure of the opening shown in FIG. It is a figure which shows other embodiment of a reaction force receiver. It is a figure explaining a movement of a pile driving device concerning the present invention. It is a figure which shows the state which inserted the reaction force receiver of the pile driving device in the construction place. It is a figure explaining the operation | work which retracts the wheel of a pile driving device. It is a figure explaining the operation | work which performs the horizontal and vertical of the beam of a pile driving device. It is a figure explaining the operation | work which attaches a lower pile to a pile driving apparatus. It is a figure which shows the state which attached the lower pile to the pile driving device. It is a figure which shows the state which attached the electric torque wrench to the pile driving device. It is a figure which shows the state which finished press-fitting a lower pile into the ground etc. It is a figure explaining the operation | work which welds an upper pile to a lower pile. It is a figure explaining the operation | work which supports the upper end of an upper pile. It is a figure which shows the state which finished press-fitting an upper pile into the ground etc. It is a figure which shows the state which removed the reaction force receiving tool.

  A preferred embodiment of a pile driving device according to the present invention will be described below in detail with reference to the drawings. 1 is a front view of a preferred embodiment of a pile driving apparatus according to the present invention, FIG. 2 is a plan view of the pile driving apparatus shown in FIG. 1, and FIG. 3 is a side view of the pile driving apparatus shown in FIG.

[Configuration of pile driving device]
The pile driving apparatus 1 shown in FIG. 1 is for roughly arranging a base portion (mounting base) 10 having tiltable (= flip-up type) wheels 2 and 2 at lower portions of four sides and a pile to be driven. A substantially rectangular opening 40 (see FIG. 4) formed at a position closer to the side edge than the center of the base 10 and a movement arranged so as to surround the three sides of the opening 40 in a U-shape. A frame 4, columns 3 and 3 erected at four positions on the upper surface side of the U-shaped moving frame 4, and an upper frame 3 a disposed so as to surround the upper portions of the four columns 3 and 3. The beam 8 is constructed so as to be movable up and down along the front support columns 3 and 3. As shown in FIG. 1, a wire support member 15 is disposed at a substantially central portion of the upper frame 3a. In addition, a rotation drive member as a driving member for driving a pile described later, specifically, a booster 9 for increasing the torque of an electric torque wrench 16 described later is disposed at a substantially central portion of the beam 8. Yes.

  The booster 9 is a device that increases the output of the rotation drive member by a combination of gears or the like and applies the rotational force to the spiral pile. A holding means (not shown) for attaching and holding and fixing the top of the spiral pile is provided at the lower portion of the booster 9, and the spiral pile is firmly held in a vertical state with the tip inserted into the opening 40. In addition, in this embodiment, although it is set as the rotational drive member for rotating and pressing into a construction surface, for example, the electric torque wrench 16, rotating a spiral pile as a driving member, a driving member is not limited to this. For example, a vibration press-fitting machine that press-fits while applying vibration may be used. In this case, a vibration press-fitting machine or the like can be directly attached to the beam 8 instead of the intensifier 9.

  The U-shaped moving frame 4 is formed of H-steel having an H-shaped cross section, and ball bearings 5 and 5 are arranged at the four corners of the lower space portion of the H-steel to move the moving frame 4 back and forth. It can be appropriately moved in the horizontal direction on the left and right. This structure forms a positioning mechanism that performs horizontal alignment. The positioning mechanism is provided with a stopper mechanism (not shown) for fixing the moving frame 4 so that the moving frame 4 does not move after positioning at a predetermined position. In addition, jacks 6 and 6 are arranged at the four corners of the upper space portion of the H steel forming the moving frame 4, and the support columns 3 and 3 are sandwiched between the support plates 4a and 4a arranged on the jacks 6 and 6, respectively. Is erected. With this structure, a horizontal adjustment mechanism that allows fine adjustment of the vertical state is formed by independently raising and lowering the corners of the four corners of the moving frame 4 with the jacks 6 and 6. As shown in FIG. 8, each of the jacks 6 and 6 is adjusted by a hydraulic pump through a four-branch valve 13 (see FIG. 9), so that one hydraulic pump can The state can be adjusted.

The opening 40 formed in the base portion 10 has a substantially square space and is closer to the side edge than the center of the base 1, more specifically, one side is the side edge of the base 1. As shown in FIG. 4, the inner peripheral surface of the opening 40 is surrounded by a rib 41. The reaction force receiver 7 is fitted in the opening 40. The reaction force receiver 7 supports the reaction force generated when the spiral pile is rotationally press-fitted into the construction surface by the ground of the construction surface, so that the pile driving device 1 itself is not rotated or displaced by the reaction force. It is a member for holding. The reaction force receiver 7 of the present embodiment is a hollow frame-like member formed by combining steel plates into a quadrangle, and a plurality of bolt holes 7c, 7c are formed on opposite side surfaces of the reaction force receiver 7. It is drilled in a line, and when used, it is fitted in the opening 40 and is firmly fixed to the rib 41 by bolts 41a and 41a. By appropriately selecting the bolt holes 7c and 7c and attaching the reaction force receiver 7 to the base portion 10, the reaction force receiver 7 is arranged flush with the side surface of the base portion 10, or the reaction force receiver 7 is It can arrange | position so that it may protrude rather than the side surface of the base part 10. FIG. As a result, the relative positioning of the reaction force receiver 7 and the recess 400 becomes possible. On the other hand, when the reaction force receiver 7 is not used at the time of movement or the like, it is removed from the opening 40 and supported by being suspended from the beam 8. In the present embodiment formed as an opening 40 a side adjacent to the side edges of the base portion 1 0, but the mobile frame 4 is formed so as to surround three sides of the opening 40 in the U-shape, opening It is also possible to form the portion 40 slightly from the center of the base portion 10 and to surround all four sides of the opening 40 in a square shape with the moving frame 40.

  Another embodiment of the reaction force receiver 7 is shown in FIG. The reaction force receiver 7 shown in FIG. 5 is attached to the tip of an arm portion 7a extending so as to extend from the base portion 10, and the reaction force receiver 7 formed in a frame shape is inserted into the ground. By absorbing the reaction force when the spiral pile is rotationally press-fitted, the pile driving device 1 itself is firmly held so as not to be rotated or displaced by the reaction force. The arm portion 7a can be made of, for example, H steel having a predetermined length. The arm portion 7a is detachably fixed to the base portion 10 with bolts or the like in a state in which the side surface of the H steel is horizontally arranged so as to be in contact with the construction surface. Is done. The reaction force receiver 7 attached to the distal end side of the arm portion 7a can use a hollow frame-shaped member formed by combining the steel plates as described above into a quadrangle, and this frame-shaped member is provided on the construction surface. A predetermined step is formed so as to be inserted into the recess 400, and is detachably fixed to a steel plate 7b attached to the tip of the arm portion 7a by a fastener such as a bolt. Although not shown as other embodiments of the reaction force receiver 7, for example, a structure in which a weight (not shown) is attached to the tip of the arm portion 7a, or an existing structure in which the tip of the arm portion 7a is nearby. It can also be used as a reaction force receiver by fixing directly.

  On the right side of the pile driving device 1 in FIG. 1, an electric winch 19 b for lifting (see FIG. 10) a spiral pile to be rotationally press-fitted with a wire 61 and a hook 62 is disposed, while on the left side of the pile driving device 1 in FIG. An electric winch 19a for moving the beam 8 up and down by the wire 63 is disposed. Further, scaffolds 17a and 17b for facilitating the work of the operator 30 are respectively attached to the left and right support columns 3 and 3 in FIG. In addition, as shown in FIG. 3, the height of the support | pillars 3 and 3 differs in the right side and the left side in FIG. The right struts 3 and 3 having a mechanism for supporting the spiral pile in a suspended manner are relatively lowered so as not to hinder the work in the narrow space and guide the beam 8 in the vertical direction. At the same time, the right support columns 3 and 3 that hold the spiral piles that are rotationally pressed into the construction surface are set to be as high as possible so that a long pile can be driven as much as possible.

  The wheels 2 and 2 are attached to the base portion 10 so as to be able to rotate 360 ° so as to be able to travel in a free direction and to be able to fall down so that the base portion 10 can be grounded to the construction surface. That is, when the operator 30 jumps up the wheels 2 and 2 obliquely upward while the pile driving device 1 is jacked up by a jack or the like (not shown), the base portion 10 is constructed by separating the wheels 2 and 2 from the ground. The surface can be grounded.

  On the right side of the pile driving device 1 in FIG. 1, a conveyance assist device 20 serving as a driving force for moving the pile driving device 1 is formed so as to be detachable. The conveyance assist device 20 includes a motor 22 incorporating a gear mechanism and the like, and is configured to transmit the rotational force to the wheels 24 via a belt 23. The forward rotation / reverse rotation / stop and the rotation speed of the motor 22 can be controlled by an attached controller 18 and have a brake function. Since the wheels 2 and 2 of the pile driving device 1 can travel in a free direction, the pile driving device 1 can be easily and freely moved by the conveyance assist device 20. In addition, it can also form so that the conveyance assistance apparatus 20 can be attached or detached also to the other side (left side in FIG. 1 of the pile driving device 1).

[Operation of pile driving device]
Next, a procedure for using the pile driving device 1 will be described with reference to FIGS. 6 to 17 are front views showing respective states from installation of the pile driving device 1 to completion of work. It is assumed that a recess 400 into which the reaction force receiver 7 is inserted is provided in advance in the construction site. First, the worker 30 carries the pile driving device 1 and the conveyance assist device 20 by a truck or the like near the construction site. Next, as shown in FIG. 6, the conveyance assist device 20 is connected to the pile driving device 1 and moved to a predetermined construction place. After reaching the construction site, the operator 30 removes the conveyance assist device 20 from the pile driving device 1.

  When the pile driving device 1 is arranged at a predetermined construction location, as shown in FIG. 7, the operator 30 inserts the reaction force receiving member 7 of the pile driving device 1 into the opening 40 while preliminarily grounding the construction site. It inserts into the recess 400 provided in etc. Then, select predetermined bolt holes 7c, 7c drilled in the side surface of the reaction force receiver 7 (here, select bolt holes 7c, 7c that are flush with the side surface of the base portion 10). ) It is fixed to the rib 41 with bolts 41a and 41a. Next, as shown in FIG. 8, the pile driving device 1 is jacked up and the wheel 2 is flipped up. This operation is performed for each of the four wheels 2 to ground the base portion 10 to the construction surface. Next, as shown in FIG. 9, the jacks 6 and 6 at the four corners of the moving frame 4 are appropriately operated via the four-branch valve 13 to adjust the vertical state. The moving frame 4 is horizontally moved from front to back and left and right as appropriate to perform horizontal alignment.

  Next, as shown in FIG. 10, the worker 30 raises the beam 8 upward using the electric winch 19 a and the wire 63, and further press-fits first using the electric winch 19 b, the hook 62 and the wire 61. The lower pile (spiral pile) 50 is lifted. A spiral pile (described later) is connected to the lower pile 50 by welding as an upper pile 51. Next, as shown in FIG. 11, the top of the lower pile 50 is attached to the lower portion of the booster 9. Then, as shown in FIG. 12, the electric torque wrench 16 that is a driving member is fixed to the intensifier 9. Next, the operator 30 operates the electric torque wrench 16 to rotationally press the lower pile 50 into the recess 400. At this time, the beam 8 is lowered in conjunction with the lowering of the lower pile 50 by controlling the electric winch 19a. And as shown in FIG. 13, it rotationally press-fits until the predetermined length of the upper part of the lower pile 50 will be in the exposed state. Note that FIG. 13 shows a state in which the beam 8 is raised to the uppermost position after the press-fitting and is on standby for the attachment of the upper pile 51.

  Next, the operator 30 prepares the upper pile 51 and lifts it directly below the intensifier 9 as shown in FIG. Next, the operator 30 prepares the welding machine 70 and welds the upper pile 51 coaxially to the upper portion of the lower pile 50 by welding 55 as shown in FIG. Then, as in the case of the lower pile 50, the upper end of the upper pile 51 is attached to the lower portion of the booster 9. And the electric torque wrench 16 is attached to the booster 9, and it fixes so that rotation is possible. Furthermore, the operator 30 further press-fits the upper pile 51 and the lower pile 50 while operating the electric torque wrench 16 and lowering the beam 8. At this time, rotational press-fitting is performed until a predetermined length of the upper portion of the upper pile 51 is exposed. If necessary, other upper piles may be connected to the upper pile 51 one after another.

  Next, as shown in FIG. 15, a bark 52 for driving the upper pile 51 to a predetermined depth is further attached to the upper portion of the upper pile 51 via a connecting member 53. Then, the upper end of the last pile 52 is attached to the lower portion of the intensifier 9, the electric torque wrench 16 is operated, and the last pile 52, the upper pile 51 and the lower pile 50 are rotationally press-fitted together while lowering the beam 8. Press-fit until the upper part reaches a predetermined position. This state is shown in FIG. Finally, the last 52 is pulled out.

  After the rotary press-fitting operation is completed, the operator 30 removes the bolts 41a and 41a connected to the rib 41 and removes the reaction force receiver 7 from the opening 40 and the recess 400 as shown in FIG. The four wheels 2, 2 that have been jacked up and retracted from the base unit 10 are returned to the normal dimension and grounded. Then, as shown in FIG. 6, the worker 30 attaches the conveyance assist device 20 to the opposite side of the traveling direction, moves the pile driving device 1 to the next construction site, and repeats the above-described operation.

[Effect of the embodiment]
According to the pile driving device according to the present embodiment, the opening 40 serving as a passage when the pile is driven is provided at a position closer to the side edge than the center of the base 10, so that it is near the side edge of the platform. In addition, there is an effect that it is possible to install the pile safely even at the wall. In addition, there is an effect that it can be easily piled even in a narrow place where the work place is narrow and construction with a large heavy machine is difficult.

  Moreover, according to the pile driving apparatus according to the present embodiment, since the positioning mechanism in the horizontal direction and the vertical direction with respect to the construction surface is provided, the driving position of the pile can be quickly determined and can be lifted up. Since the wheels 2 and 2 and the conveyance assist device 20 can be attached, the pile driving device 1 can be easily moved, and there is an effect that the installation, placement and movement can be performed quickly and continuously.

  Furthermore, since the pile driving device according to the present embodiment includes the reaction force receiving member 7 attached to the opening 40, the pile driving device 1 itself can effectively rotate by the reaction force even when the spiral pile is rotationally press-fitted. It is effective in that the spiral pile can be reliably rotationally press-fitted.

  As described above, the preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the specific embodiment, and within the scope of the gist of the present invention described in the claims, Needless to say, various modifications and changes are possible. In the description of the operation of the pile driving device described above, the reaction force receiver 7 has been described based on what is attached to the opening 40. However, the reaction force receiver 7 and the arm portion 7a each having a frame attached to the tip of the arm portion 7a. Of course, it is also possible to use the reaction force receiver 7 having a weight attached to the tip thereof and the reaction force receiver 7 in which the tip of the arm portion 7a is directly fixed to the structure.

DESCRIPTION OF SYMBOLS 1 Pile driver 2 Wheel 3 Support | pillar 3a Upper frame 4 Moving frame 5 Ball bearing 6 Jack 7 Reaction force receiving device 7a Arm part 7c Bolt hole 8 Beam 9 Booster 10 Base part 11 Power cord 13 4 Branch valve 16 Electric torque wrench 17a, 17b Scaffold 18 Controller 19a, 19b Electric winch 20 Transfer assist device 22 Motor 23 Belt 24 Wheel 30 Worker 40 Opening 41 Rib 50 Lower pile 51 Upper pile 52 Ladder 53 Connecting member 55 Welding 61, 63 Wire 62, 64 Hook 64 wire 70 welding machine 400 recess

Claims (4)

In the pile driving device for driving piles on the construction surface,
An opening formed at a position closer to the side edge than the center of the base;
A moving frame that is arranged so as to surround a part or all of the opening, and includes two support columns provided with holding means for arranging the pile in the opening so as to be movable up and down. When,
A positioning mechanism for performing alignment by moving the moving frame in the horizontal direction of front , rear, left and right
A horizontal adjustment mechanism that vertically positions the piles with respect to the construction surface by moving the pillars up and down independently by jacks;
A pile driving device characterized by comprising: In the pile driving device according to claim 1 ,
The pile driving device, wherein a wheel that can be flipped up is attached to the base portion. In the pile driving device according to claim 1 or 2 ,
The pile is a spiral pile with spiral blades around it,
A pile driving device comprising a booster to which a rotational drive member for rotationally press-fitting the spiral pile is detachably connected. In the pile driving device according to claim 3 ,
The said base part is equipped with the reaction force receiving device which receives the reaction force at the time of carrying out the rotation press-fit of the said spiral pile.

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