JP4250055B2 - Pile driver and pile driving method - Google Patents

Pile driver and pile driving method Download PDF

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JP4250055B2
JP4250055B2 JP2003358050A JP2003358050A JP4250055B2 JP 4250055 B2 JP4250055 B2 JP 4250055B2 JP 2003358050 A JP2003358050 A JP 2003358050A JP 2003358050 A JP2003358050 A JP 2003358050A JP 4250055 B2 JP4250055 B2 JP 4250055B2
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pile
steel pipe
portions
pipe sheet
sheet pile
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JP2005120743A (en
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北村  精男
輝夫 長山
光宏 百田
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Giken Ltd
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Description

本発明は、杭打機と、この杭打機を用いた杭打設方法に関する。   The present invention relates to a pile driving machine and a pile driving method using the pile driving machine.

従来、杭(矢板を含む)を油圧を用いて圧入する杭打機(杭圧入引抜機:杭圧入機)が知られている。杭圧入引抜機は、杭を掴んだ状態で油圧により降下させるチャック装置(杭打設装置)を備えており、このチャック装置により杭を地盤に圧入する。また、杭圧入引抜機は、先に圧入した既設の杭から反力を取って杭の圧入を行うとともに、先に圧入した既設の杭上を自走して、順次杭を列状に並んだ状態に圧入するようになっており、複数の矢板を連続して並べて圧入し、矢板壁を構築することが可能となっている。また、仮設構造物である矢板壁において、矢板を引き抜いて撤去することも可能となっている。なお、杭圧入引抜機は、矢板壁用の矢板に限らず、互いに間隔あけて杭を並んだ状態に順次圧入することも可能である。   Conventionally, a pile driving machine (pile press-fitting and drawing machine: pile press-fitting machine) that presses a pile (including a sheet pile) using hydraulic pressure is known. The pile press-fitting and pulling machine includes a chuck device (pile placing device) that lowers the pile by hydraulic pressure while holding the pile, and presses the pile into the ground using the chuck device. Moreover, the pile press-fitting and pulling machine takes the reaction force from the existing piles that have been press-fitted in advance and press-fits the piles. It is possible to press-fit into a state, and it is possible to construct a sheet pile wall by continuously pressing a plurality of sheet piles side by side. Moreover, in the sheet pile wall which is a temporary structure, the sheet pile can be pulled out and removed. Note that the pile press-fitting and drawing machine is not limited to the sheet pile for sheet pile walls, but can sequentially press-fit the piles in a state in which the piles are arranged at intervals.

また、圧入される杭の上端部が地面からかなり高い位置とされる場合や、杭を圧入する場所の周囲に作業スペースや杭の搬入スペースが確保できない場合のために、矢板壁等の並んで先に圧入された既設の杭を利用して、既設の杭上において杭等の資材を搬送して杭圧入引抜機に杭を搬入するシステムや、既設の杭上を自走するクレーンや、杭圧入引抜機に取り付けられるクレーンなどが開発されている。これにより、仮設の資材搬入用道路や仮設の足場等を設けることなく、杭を杭圧入引抜機のチャック装置に取り付けることができる。   In addition, when the upper end of the pile to be press-fitted is located at a considerably high position from the ground, or when it is not possible to secure a working space or a pile carrying-in space around the place where the pile is to be press-fitted, it is arranged side by side with sheet pile walls, etc. A system that transports materials such as piles on the existing piles by using the existing piles that have been press-fitted first, and loads the piles into the pile press-fitting machine, a crane that runs on the existing piles, and piles Cranes that can be attached to press-fitting machines have been developed. Thereby, a pile can be attached to the chuck apparatus of a pile press-fit pulling machine, without providing a temporary material carrying-in road, a temporary scaffold, etc.

このような杭圧入引抜機において圧入すべき杭をチャック装置に取り付ける際には、杭をクレーンにより吊り上げて、チャック装置の上からチャック装置内に吊り降ろし、チャック装置に杭を掴ませることになる。この場合に、クレーンによる操作だけで、吊られた状態の杭の下端部をチャック装置内に挿入することが困難なので、例えば、チャック装置の近傍に作業員を配置し、作業員により吊られた杭を位置合わせ(杭の誘導や、クレーンのオペレータへの指示など)しながらチャック装置内に杭の下端部を挿入することになる。なお、作業員は、例えば、杭圧入引抜機に着脱可能に取り付けられた作業ステージに載って、杭を取り付けるための作業を行うことになる(例えば、特許文献1参照)。
特開平9−125385号公報(第3頁)
When mounting a pile to be press-fitted in such a pile press-fitting machine to the chuck device, the pile is lifted by a crane, suspended in the chuck device from above the chuck device, and the chuck device grips the pile. . In this case, since it is difficult to insert the lower end of the suspended pile into the chuck device only by operation with a crane, for example, an operator is placed near the chuck device and is suspended by the operator. The lower end of the pile is inserted into the chuck device while aligning the pile (guidance guidance, instructions to the crane operator, etc.). In addition, a worker will be mounted on a work stage that is detachably attached to a pile press-fitting / extracting machine, for example, and performs a work for attaching the pile (see, for example, Patent Document 1).
JP 9-125385 A (page 3)

ところで、上述の杭圧入引抜機に取り付けられる作業ステージは、例えば、圧入された杭の上端部が地面からかなり高い場合などに、高所の足場として用いられる。従って、上述のように作業ステージに載って吊られた杭を位置合わせしてチャック装置に掴ませる作業は高所作業となる可能性が高いが、高所作業では、様々な点に注意する必要があり、作業性が悪い。さらに、杭は重量物であり、吊られた状態の杭を作業者が位置決めする場合も、様々な点に注意する必要があり、作業性が悪い。従って、作業性の向上を図る上では、作業者が吊られた杭の近傍で、杭の位置合わせ作業を行わなくとも、チャック装置に杭を取り付けることが可能となることが好ましい。   By the way, the work stage attached to the above-mentioned pile press-fitting and drawing machine is used as a scaffold in a high place, for example, when the upper end of the press-fitted pile is considerably high from the ground. Therefore, as described above, it is highly likely that the work of aligning the pile suspended on the work stage and holding it on the chuck device will be a work at a high place, but it is necessary to pay attention to various points at work at a high place. And workability is poor. Furthermore, a pile is a heavy article, and when an operator positions a suspended pile, it is necessary to pay attention to various points, and workability is poor. Therefore, in order to improve workability, it is preferable that the pile can be attached to the chuck device without performing the pile alignment work in the vicinity of the pile where the operator is suspended.

本発明の課題は、杭を杭打機に取り付ける際に、杭の近傍での作業者による杭の位置合わせ作業をなくし、作業性を高めた杭打機及び杭打設方法を提供することである。   An object of the present invention is to provide a pile driving machine and a pile driving method that improve workability by eliminating pile alignment work by an operator in the vicinity of the pile when attaching the pile to the pile driving machine. is there.

請求項1に記載の発明は、杭(鋼管矢板1:鋼矢板4)を着脱自在に取り付けた状態で降下させて地盤2に打設する杭打設装置(チャック装置14)を備えた杭打機10であって、前記杭打設装置に吊られた状態の杭を取り付ける際に、前記杭打設装置の上方で前記杭を左右から挟むようにして前記杭打設装置に案内する杭取付補助装置20,50を備え、前記杭取付補助装置は、前記杭を左右から挟むようにして位置合わせする左腕部23、53及び右腕部22,52を備え、左右の腕部のうちの少なくと一方の腕部の少なくとも一部が左右に移動自在とされており、前記杭取付補助装置の左右の腕部のうちの一方の腕部が他方の腕部より高い位置に配置されていることを特徴とする。
より杭を打設することを特徴とする杭打設方法。
The invention described in claim 1 includes a pile driving device (chuck device 14) provided with a pile driving device (chuck device 14) for dropping the pile (steel pipe sheet pile 1: steel sheet pile 4) in a detachable manner and placing it on the ground 2 A pile mounting auxiliary device that is a machine 10 and guides the pile driving device so that the pile is sandwiched from the left and right above the pile driving device when the pile suspended in the pile driving device is mounted. includes a 20, 50, the pile auxiliary mounting apparatus comprises a left arm 23, 53 and the right arm 22 and 52 to align so as to sandwich the pile from left, least also one arm of the left and right arms At least a part of the portion is movable left and right, and one of the left and right arm portions of the pile mounting auxiliary device is disposed at a position higher than the other arm portion. .
A pile placing method characterized by placing a pile more.

請求項1記載の発明によれば、杭取付補助装置の左右の腕部のうちの少なくとも1つの腕部を移動させて、左右の腕部の間に吊られた杭を作業者の誘導なしに移動可能な広い間隔を開け、開いた状態の左右の腕部の間に吊られた杭を移動する。次いで、左右の腕部のうちの少なくとも1つを移動させて左右の腕部を閉じて杭を挟むようにする。この際に、左右の腕部の中心と、杭打設装置の杭が取り付けられる部分の中心とが許容範囲内で一致するようにして、杭の左右方向の位置合わせが行われる。この際に、左右の腕部は、杭を強く挟む必要はなく、杭を左右の腕部の中心に誘導できれば良く、左右の腕部が杭を挟んだ状態で、杭を上下、前後に移動できるようにすることも可能である。   According to the first aspect of the present invention, at least one arm portion of the left and right arm portions of the pile attachment assisting device is moved, and the pile suspended between the left and right arm portions is not guided by the operator. The pile which is hung between the left and right arms in an open state is moved with a wide movable gap. Next, at least one of the left and right arm portions is moved to close the left and right arm portions and sandwich the pile. At this time, alignment of the piles in the left-right direction is performed such that the centers of the left and right arm portions and the centers of the portions to which the piles of the pile driving device are attached coincide with each other within an allowable range. At this time, it is not necessary for the left and right arm portions to pinch the pile strongly, it is sufficient if the pile can be guided to the center of the left and right arm portions, and the pile moves up and down and back and forth with the left and right arm portions sandwiching the pile. It is also possible to make it possible.

従って、左右の腕部により左右方向の位置合わせが行われた後に、左右の腕部に案内された状態で、吊られた杭を前後に移動することで容易に杭の前後方向の位置合わせも可能となる。そして、左右の腕部に挟まれて位置合わせされた後に杭を降下させることにより、杭を杭打設装置内に挿入して取り付けることができる。従って、作業員による位置合わせ作業なしに、杭打設装置に杭を取り付けることができる。
また、杭打設装置に杭を取り付ける際に、吊られた杭の下端の高さを低い方の腕部より高くするとともに高い方の腕部より低くし、この状態で、高い方の腕部の低い方の腕部にほぼ対向する側面に接触するように吊られた杭を移動する。次ぎに、杭の下端が低い方の腕部より低くなるように杭を降下させた後に、高い方の腕部と低い方の腕部との間を狭くして、これらの間に杭が挟まれるように、左右の腕部の少なくとも一方(例えば、低い方の腕部)を移動して、最終的に左右方向の位置合わせを行う。このようにすれば、左右方向の位置合わせがさらに容易になる。すなわち、杭の下端が低い方の腕部より高い状態で、高い方の腕部に杭を接触させるようにすることで、腕部に邪魔されることなく、左右の腕部の間に容易に吊られた杭を誘導することができる。また、杭打機の後方のクレーンにより杭を杭打設装置に搬入して取り付ける場合に、杭打設装置の前方まで杭を移動した後に、杭を後方に移動することにより左右の腕部の間に杭を誘導する場合に比較して、杭を杭打設装置の横側から搬入することにより、クレーンによる杭の移動を容易にできるとともに、クレーンの作業半径を小さくできる。
Therefore, after the left and right arms are aligned in the left and right direction, the piles can be easily aligned in the front and back direction by moving the suspended pile back and forth while being guided by the left and right arms. It becomes possible. And a pile can be inserted and attached in a pile placing apparatus by dropping a pile after being pinched | interposed and aligned with the arm part on either side. Therefore, a pile can be attached to a pile driving device without an alignment operation by an operator.
Moreover, when attaching a pile to a pile driving device, the height of the lower end of the suspended pile is made higher than the lower arm and lower than the higher arm, and in this state, the higher arm The suspended pile is moved so as to be in contact with the side surface substantially opposite to the lower arm portion. Next, after lowering the pile so that the lower end of the pile is lower than the lower arm, narrow the gap between the higher arm and the lower arm and sandwich the pile between them. As described above, at least one of the left and right arm portions (for example, the lower arm portion) is moved to finally perform alignment in the left-right direction. In this way, alignment in the left-right direction is further facilitated. In other words, with the lower end of the pile higher than the lower arm, the pile is brought into contact with the higher arm so that the arm can be easily moved between the left and right arms without being disturbed by the arm. Suspended piles can be guided. In addition, when a pile is loaded into a pile driving device by a crane behind the pile driving machine and attached to the front of the pile driving device, the left and right arms are moved by moving the pile backward. Compared with the case where the pile is guided in between, the pile can be moved from the side of the pile driving device, whereby the pile can be easily moved and the working radius of the crane can be reduced.

請求項2に記載の発明は、請求項1に記載の杭打機において、前記杭取付補助装置は、左右の腕部の間に挟まれた状態の杭を前後方向に移動させる前後移動手段(挟持部25,55)と、左右の腕部の間に挟まれた状態の杭を円滑に下降させる摩擦低減手段(挟持部33)、左右の腕部を上下動させる上下動手段(上下用シリンダ装置を備えた上下用ポスト51)とのうちの少なくとも1つを備えることを特徴とする。   According to a second aspect of the present invention, in the pile driving machine according to the first aspect, the pile mounting auxiliary device moves the pile in a state of being sandwiched between the left and right arm portions in the front-rear direction. Friction reduction means (clamping part 33) for smoothly lowering the piles sandwiched between the clamping parts 25, 55) and the left and right arm parts, and vertical movement means (vertical cylinder for vertical movement) for moving the left and right arm parts up and down And at least one of upper and lower posts 51) provided with the device.

請求項2に記載の発明によれば、上述のように左右の腕部の間に杭を挟んだ状態で左右方向の位置合わせができるとともに、前後移動手段により杭を移動することで前後方向の位置合わせがさらに容易になる。また、左右の腕部により位置合わせされた状態に挟まれた杭を摩擦低減手段によりスムーズに下降させることができる。また、左右の腕部を上下動させる上下動手段とのうちの少なくとも1つを備えることにより、請求項3記載の構成のように左右の腕部の高さを代えたり、左右の腕部の未使用時に左右の腕部を降下させることで、小型化(収納した状態に)したりすることができる。すなわち、これら三つの手段は、請求項1の記載の発明により、杭の左右位置を決める際もしくは決めた後に杭を杭打設装置へ取り付ける際の作業性を向上するためのものであり、これらにより、吊られた杭近傍で杭の位置合わせ等を行う作業員がいなくとも杭を吊るクレーンのオペレータの操作が容易なものとなる。
なお、摩擦低減手段は、例えば、左右の腕部の杭と接触する部分に摩擦係数の低い素材を用いるか、杭を下方に案内するガイドローラを配置することにより実現することができる。
According to the invention described in claim 2, as described above, in the state where the pile is sandwiched between the left and right arms, the horizontal alignment can be performed, and the pile can be moved in the front-rear direction by the front-rear moving means. Positioning becomes easier. Further, the pile sandwiched between the right and left arm portions can be smoothly lowered by the friction reducing means. Further, by providing at least one of vertical movement means for moving the left and right arm parts up and down, the height of the left and right arm parts is changed as in the configuration of claim 3, By lowering the left and right arms when not in use, it can be reduced in size (stored). That is, these three means are for improving workability when attaching the pile to the pile driving device when the left and right positions of the pile are determined or after the determination according to the invention of claim 1, Thus, the operator of the crane that hangs the pile can easily operate even if there is no operator who performs position adjustment of the pile near the suspended pile.
In addition, a friction reduction means is realizable by using the raw material with a low friction coefficient for the part which contacts the pile of a left-right arm part, or arrange | positioning the guide roller which guides a pile below, for example.

請求項3に記載の発明は、請求項1又は2に記載の杭打機を用いた杭の打設方法であって、吊り上げた杭を前記杭取付補助装置の開いた状態の左右の腕部の間に移動し、前記左右の腕部のうちの少なくとも一方の腕部の少なくとも一部を他方の腕部に近づけるように移動させることにより、左右の腕部の間に杭を挟んだ状態とするとともに、杭を杭打設装置に位置合わせし、前記杭を下降させて前記杭打設装置に取り付け、前記杭打設装置を降下させることにより杭を打設することを特徴とする。
請求項3に記載の発明によれば、請求項1又は2に記載の発明と同様の作用効果を得ることができる。
The invention according to claim 3 is a pile placing method using the pile driving machine according to claim 1 or 2 , wherein the left and right arms of the pile attachment auxiliary device are opened to the left and right arms. And a state in which a pile is sandwiched between the left and right arm parts by moving at least a part of at least one of the left and right arm parts closer to the other arm part. In addition, the pile is positioned on the pile driving device, the pile is lowered and attached to the pile driving device, and the pile is driven by lowering the pile driving device.
According to the invention described in claim 3 , the same effect as that of the invention described in claim 1 or 2 can be obtained.

本発明によれば、杭打機に杭を取り付ける際に、作業員の位置合わせ作業なしに、杭取付補助装置により杭を位置合わせして杭打機に杭を取り付けることができる。   ADVANTAGE OF THE INVENTION According to this invention, when attaching a pile to a pile driver, a pile can be aligned by a pile attachment auxiliary | assistance apparatus and a pile can be attached to a pile driver, without an operator's alignment operation.

以下、本発明の第1実施形態の杭打機及び杭打設方法を説明する。
この例の杭打機(杭圧入引抜機)は、従来と同様の杭圧入引抜機に後に説明する杭取付補助装置を設けたものであるが、杭打機は、必ずしも杭圧入引抜機を用いたものに限らず、打設すべき杭が吊られた状態で取り付けられる杭打設装置(チャック装置)を有する杭打機に応用可能である。
Hereinafter, a pile driver and a pile driving method according to the first embodiment of the present invention will be described.
The pile driver in this example (pile press-fitting / extracting machine) is a pile press-fitting / extracting machine similar to the conventional one provided with a pile mounting auxiliary device, which will be described later. The present invention can be applied to a pile driving machine having a pile driving device (chuck device) to which the pile to be driven is attached in a suspended state.

図1及び図2に示すように、杭打機10となる杭圧入引抜機は、既に圧入(打設)された鋼管矢板1(杭)を掴む複数のクランプ(図示略)を備えたサドル11と、サドル11に対して前後にスライド移動自在なスライドベース12と、スライドベース12上に左右に旋回自在に取り付けられた旋回マスト13と、旋回マスト13の前面に沿って上下動自在で、かつ、杭を掴んだ状態で降下することにより杭を圧入するチャック装置14(杭打設装置)と、本発明に係わる杭取付補助装置20とからなる。なお、図1及び図2において吊られた鋼管矢板を透過状態で図示している。   As shown in FIGS. 1 and 2, a pile press-fitting / pulling machine serving as a pile driving machine 10 includes a saddle 11 having a plurality of clamps (not shown) that hold a steel pipe sheet pile 1 (pile) that has already been press-fitted (placed). A slide base 12 that is slidable back and forth with respect to the saddle 11, a swivel mast 13 that is pivotably mounted on the slide base 12 to the left and right, a vertically movable along the front surface of the swivel mast 13, and The chuck device 14 (pile placing device) press-fits the pile by descending in a state where the pile is gripped, and the pile mounting auxiliary device 20 according to the present invention. In addition, the steel pipe sheet pile suspended in FIG.1 and FIG.2 is illustrated in the permeation | transmission state.

なお、この例の杭打機10は、鋼管杭、特に鋼管に継手1a,1bが取り付けられた鋼管矢板1用のもので、前記クランプは、鋼管矢板1の上端部から鋼管矢板1内に挿入されて拡径することにより鋼管矢板1を掴むもので、図中において鋼管矢板1内に挿入されて隠れた状態となっている。なお、本発明の杭打機10は、鋼管杭(鋼管矢板1)用に限られるものではなく、各種杭(矢板)のいずれかに対応するものであっても良い。また、クランプは、管状の杭(矢板)以外の杭を外側から挟んで掴むようになっていても良い。   The pile driving machine 10 in this example is for a steel pipe pile, particularly a steel pipe sheet pile 1 in which joints 1a and 1b are attached to the steel pipe. The clamp is inserted into the steel pipe sheet pile 1 from the upper end of the steel pipe sheet pile 1. The steel pipe sheet pile 1 is gripped by expanding the diameter, and is inserted into the steel pipe sheet pile 1 and hidden in the figure. In addition, the pile driving machine 10 of this invention is not restricted to steel pipe piles (steel pipe sheet pile 1), You may respond | correspond to either of various piles (sheet pile). Further, the clamp may be configured to sandwich and hold a pile other than the tubular pile (sheet pile) from the outside.

また、チャック装置14は、上下動自在に旋回マスト13前面に取り付けられるとともに、チャック装置14を上下に駆動するための左右2本の昇降用シリンダ装置141,141を備えた支持部142と、支持部142の前で環状に構成されるチャック部143とからなる。そして、チャック部143は、その内周部に環状のチャック部143の半径方向に沿って移動自在な複数の可動爪144,…を有する。可動爪144,…は、図示しない油圧シリンダ装置によりチャック部143の半径方向に沿って中心に向かう方向と中心から遠ざかる方向に駆動される。そして、チャック部143は、可動爪144,…を中心から遠ざける方向に移動(後退)して引っ込めた状態で、チャック部143内に鋼管矢板1を挿入し、次いで、可動爪144,…を中心に向かって前進させることにより、可動爪144,…が鋼管矢板1を外周から挟んで鋼管矢板1を掴む(杭を取り付けられる)ようになっている。   The chuck device 14 is attached to the front surface of the swivel mast 13 so as to be movable up and down, and also includes a support portion 142 including two right and left lifting cylinder devices 141 and 141 for driving the chuck device 14 up and down. The chuck portion 143 is formed in a ring shape in front of the portion 142. And the chuck | zipper part 143 has several movable nail | claws 144 and ... which can move along the radial direction of the cyclic | annular chuck | zipper part 143 in the inner peripheral part. The movable claws 144 are driven in a direction toward the center along the radial direction of the chuck portion 143 and a direction away from the center by a hydraulic cylinder device (not shown). And the chuck | zipper part 143 inserts the steel pipe sheet pile 1 in the chuck | zipper part 143 in the state which moved (retracted) the movable nail | claw 144, ... in the direction away from the center, and then centered the movable nail | claw 144, ... By moving forward, the movable claws 144,... Grip the steel pipe sheet pile 1 with the steel pipe sheet pile 1 sandwiched from the outer periphery (a pile can be attached).

前記杭取付補助装置20は、図1〜図3に示すように、前記支持部142の左右の昇降用シリンダ装置141,141のそれぞれの前にほぼ垂直に配置された二つの上下用ポスト21,21と、二つの上下用ポスト21,21にそれぞれ設けられた左右の腕部23,22とからなる。上下用ポスト21,21は、左右の腕部23,22の上下幅の2倍より長い上下長さを有する。
前記腕部22,23は、図3に示すように、上下用ポスト21,21に上下動自在に嵌合するスライダ24,24と、スライダ24,24とともに上下動するとともに鋼管矢板1に接触する挟持部25,25と、スライダ24,24に対して挟持部25,25を同じ向きを向いたまま左右に移動自在に支持させる平行リンク部26,26と、挟持部25,25を左右に駆動し、左右の腕部23,22を開閉する開閉用シリンダ装置27とを備える。
As shown in FIGS. 1 to 3, the pile mounting auxiliary device 20 includes two vertical posts 21 disposed substantially vertically in front of the left and right lifting cylinder devices 141 and 141 of the support portion 142. 21 and left and right arm portions 23 and 22 provided on the two upper and lower posts 21 and 21, respectively. The vertical posts 21 and 21 have a vertical length longer than twice the vertical width of the left and right arm portions 23 and 22.
As shown in FIG. 3, the arm portions 22, 23 move vertically with the sliders 24, 24 fitted to the vertical posts 21, 21, and move with the sliders 24, 24 and contact the steel pipe sheet pile 1. The holding portions 25, 25, the parallel link portions 26, 26 that support the holding portions 25, 25 movably to the left and right while facing the same direction with respect to the sliders 24, 24, and the holding portions 25, 25 are driven to the left and right. And an open / close cylinder device 27 that opens and closes the left and right arm portions 23 and 22.

スライダ24,24は、上下用ポスト21,21に対して上下位置を固定するための上下固定用ピン241,241(図3(B)に図示)を有し、上下用ポスト21,21の図示しないピン穴に上下固定用ピン241,241を差すことで、上下用ポスト21,21にスライダ24,24を固定可能となっている。なお、左右のスライダ24,24、すなわち左右の腕部22,23は、後述するように一方の腕部22が他方の腕部23より低くなるように配置されるが、この際に左右の腕部22,23のうちどちらを高くするかを変更できるように、スライダ24,24が上下動自在とされている。
なお、スライダ24,24に後述するように上下動用のシリンダ装置等のアクチュエータを取り付け、スライダ24,24を上下に駆動するようにしても良い。
The sliders 24, 24 have vertical fixing pins 241, 241 (shown in FIG. 3B) for fixing the vertical position with respect to the vertical posts 21, 21. The sliders 24, 24 can be fixed to the vertical posts 21, 21 by inserting the vertical fixing pins 241, 241 into the pin holes that are not. The left and right sliders 24, 24, that is, the left and right arm portions 22, 23 are arranged such that one arm portion 22 is lower than the other arm portion 23 as described later. The sliders 24 and 24 are movable up and down so that which one of the portions 22 and 23 is to be raised can be changed.
As will be described later, an actuator such as a cylinder device for vertical movement may be attached to the sliders 24, 24 so that the sliders 24, 24 are driven up and down.

平行リンク部26,26は、左右に平行に並んだに2対のリンク片261,…を上下に有し、各リンク片261,…の一方の端部がスライダ24,24に回転自在に軸支され、他方の端部が挟持部25,25に回転自在に軸支された周知の平行リンクであり、互いに対向する二つの挟持部25,25(上下位置は異なる)の同じ面(内側の側面)が常に対向するように挟持部25,25を左右に移動自在とするものである。なお、この例では、平行リンク部26,26は、ほぼ水平な平面に沿って挟持部25,25を左右に平行移動させるものとなっている。
開閉用シリンダ装置27は、一端部がスライダ24,24の挟持部25,25側に突出したフランジ部242,242に回動自在に接合され、他端部が挟持部25,25に回動自在に接合され、スライダ24,24に平行リンク部26,26を介して左右に移動自在に支持された挟持部25,25を左右に駆動するものである。
The parallel link portions 26, 26 have two pairs of link pieces 261, which are arranged in parallel on the left and right sides, and one end of each link piece 261,. The other end is a well-known parallel link that is rotatably supported by the holding portions 25, 25, and the same surface (inner side) of the two holding portions 25, 25 facing each other (the vertical positions are different) The clamping portions 25, 25 are movable left and right so that the side surfaces always face each other. In this example, the parallel link portions 26 and 26 translate the sandwiching portions 25 and 25 from side to side along a substantially horizontal plane.
The opening / closing cylinder device 27 is rotatably joined to flange portions 242 and 242 having one end projecting toward the sandwiching portions 25 and 25 of the sliders 24 and 24, and the other end is pivotable to the sandwiching portions 25 and 25. Are connected to the sliders 24 and 24, and are supported by the sliders 24 and 24 via the parallel link portions 26 and 26 so as to be movable left and right.

挟持部25,25は、杭打機10の前後方向に延在する上下二枚のブラケット251,251と、二枚のブラケット251,251間に上下を回動自在に支持された二つのローラ252,…と、ローラ252,…間に周回するように掛け渡されたベルト253とを備える。ブラケット251,251は、前後方向に長尺な形状で、その前後の中央部に挟持される杭の反対側に突出する突出部254,254を有し、該突出部254,254に前記リンク片261,…及び開閉用シリンダ装置27,27の端部が回動自在に接合される。前後のローラ252,…のうちの一方のローラ252(後側のローラ252)には、駆動モータ255,255が接続されて駆動ローラ252となり、他方のローラ252(前側のローラ252)は、従動ローラ252となる。なお、左右の腕部23,22のそれぞれの駆動ローラ252は反対方向に回転するとともに互いに同期するように制御される。ベルト253は、左右のブラケット251,251の互いに対向する内側の側縁より僅かに内側に配置され、左右の挟持部25,25を鋼管矢板1の左右の側面に接触させた場合に、ベルト253の外周面が鋼管矢板1の側面に接触するようになっている。なお、ベルト253の挟持部25,25の内側の側面となる部分、及びブラケット251,251の内側の側縁は、杭打機10の進行方向(鋼管矢板1の並び方向)に対応する前後方向に沿っている。
そして、ローラ252,…、ベルト253,253、駆動モータ255,255を備えた挟持部25,25が、左右の腕部23,22の間に挟まれた状態の鋼管矢板1を前後方向に移動させる前後移動手段となる。
The sandwiching portions 25 and 25 include two upper and lower brackets 251 and 251 extending in the front-rear direction of the pile driving machine 10, and two rollers 252 that are supported between the two brackets 251 and 251 so as to be vertically rotatable. ,... And a belt 253 wound around the rollers 252. Each of the brackets 251 and 251 has a long shape in the front-rear direction, and has projecting portions 254 and 254 projecting on the opposite side of the pile sandwiched between the front and rear central portions, and the link pieces are connected to the projecting portions 254 and 254. 261,... And end portions of the opening / closing cylinder devices 27, 27 are joined to be rotatable. Drive motors 255 and 255 are connected to one roller 252 (rear roller 252) of the front and rear rollers 252,..., And the other roller 252 (front roller 252) is driven. It becomes a roller 252. The drive rollers 252 of the left and right arm portions 23 and 22 are controlled to rotate in opposite directions and to be synchronized with each other. The belt 253 is disposed slightly inside the mutually opposing inner side edges of the left and right brackets 251 and 251, and when the left and right clamping portions 25 and 25 are brought into contact with the left and right side surfaces of the steel pipe sheet pile 1, the belt 253. The outer peripheral surface of this is in contact with the side surface of the steel pipe sheet pile 1. In addition, the part used as the side surface inside the clamping parts 25 and 25 of the belt 253, and the side edge inside the brackets 251 and 251 are the front-back direction corresponding to the advancing direction (alignment direction of the steel pipe sheet pile 1) of the pile driving machine 10. It is along.
And the clamping parts 25 and 25 provided with the rollers 252, ..., the belts 253 and 253, the drive motors 255 and 255 move the steel pipe sheet pile 1 sandwiched between the left and right arm parts 23 and 22 in the front-rear direction. It becomes a back and forth moving means.

以上のような構成により杭取付補助装置20は、左右の腕部23,22の挟持部25,25が互いに近づいて閉じる方向と、互いに遠ざかって開く方向とに移動可能となっており、少なくも一方の腕部22の挟持部25を開いた状態にし、左右の腕部23,22の距離を最短距離より長くした状態で、吊られた鋼管矢板1を左右の挟持部25,25の間に誘導し、次いで、左右の腕部23,22の両方とも閉じた状態とすることにより、鋼管矢板1を左右の腕部23,22で挟んだ状態として鋼管矢板1の左右方向の位置を、環状のチャック装置14(チャック部143)内に鋼管矢板1を挿入可能な位置に合わせられるようになっている。   With the configuration as described above, the pile mounting auxiliary device 20 is movable in a direction in which the clamping portions 25, 25 of the left and right arm portions 23, 22 are close to each other and in a direction in which they are opened away from each other. The suspended steel pipe sheet pile 1 is placed between the left and right holding parts 25, 25 in a state where the holding part 25 of one arm part 22 is opened and the distance between the left and right arm parts 23, 22 is longer than the shortest distance. Next, the left and right arm portions 23 and 22 are both closed, so that the steel pipe sheet pile 1 is sandwiched between the left and right arm portions 23 and 22 so that the left and right positions of the steel pipe sheet pile 1 are circular. The steel pipe sheet pile 1 can be adjusted to a position where it can be inserted into the chuck device 14 (chuck portion 143).

また、左右の腕部23,22を閉じた状態、ここでは開閉用シリンダ装置27,27を伸長させた状態で、左右の腕部23,22の挟持部25,25の鋼管矢板1と接触する内側の側面(ベルト253,253の外周面)は、鋼管矢板1の中心をチャック装置14(チャック部143)の左右方向の中心位置に配置した際の鋼管矢板1の外周面より僅かに内側に配置されるようになっている(実際はベルト253,253が撓んで、鋼管矢板1の外周面に沿って配置される。)。
従って、鋼管矢板1を挟んで左右の腕部23,22を同時に閉じた状態では、左右の開閉用シリンダ装置27,27により鋼管矢板1に対して圧がかかることになるが、ベルト253,253のたわみ等により圧は吸収され、鋼管矢板1の中心がチャック装置14の左右の中心にある場合に腕部22,23からは僅かな力しかかからないようになっている。なお、鋼管矢板1の中心がチャック装置14の左右の中心からずれている場合には、鋼管矢板1の中心をチャック装置14の左右の中心に移動するように左右の腕部23,22のうちの一方の腕部22,23から開閉用シリンダ装置27による力が作用し、鋼管矢板1の中心がチャック装置14の左右の中心にくるように鋼管矢板1を誘導するようになっている。
Further, the left and right arm portions 23 and 22 are closed, in this case, the open / close cylinder devices 27 and 27 are extended, and the steel pipe sheet piles 1 of the sandwiching portions 25 and 25 of the left and right arm portions 23 and 22 are brought into contact with each other. The inner side surface (the outer peripheral surface of the belts 253 and 253) is slightly inside the outer peripheral surface of the steel pipe sheet pile 1 when the center of the steel pipe sheet pile 1 is arranged at the center position in the left-right direction of the chuck device 14 (chuck part 143). (The belts 253 and 253 are actually bent and arranged along the outer peripheral surface of the steel pipe sheet pile 1).
Therefore, in the state where the left and right arm portions 23 and 22 are simultaneously closed with the steel pipe sheet pile 1 sandwiched therebetween, pressure is applied to the steel pipe sheet pile 1 by the left and right opening and closing cylinder devices 27 and 27, but the belts 253 and 253 are applied. The pressure is absorbed by, for example, the bending of the arm, and when the center of the steel pipe sheet pile 1 is at the center of the left and right of the chuck device 14, only a slight force is applied from the arm portions 22 and 23. In addition, when the center of the steel pipe sheet pile 1 is shifted from the left and right centers of the chuck device 14, the left and right arm portions 23 and 22 are moved so that the center of the steel pipe sheet pile 1 moves to the left and right centers of the chuck device 14. A force from the opening / closing cylinder device 27 acts from one of the arm portions 22, 23, and the steel pipe sheet pile 1 is guided so that the center of the steel pipe sheet pile 1 comes to the left and right centers of the chuck device 14.

また、左右の腕部23,22が鋼管矢板1を挟んだ状態で、左右の腕部23,22のそれぞれの駆動ローラ252を互いに逆方向に回転させてベルト253を周回移動させることにより、左右の腕部23,22に挟まれた鋼管矢板1を前後に移動可能となっており、これにより鋼管矢板1の中心をチャック装置14の鋼管矢板1の取付位置の中心に誘導することができる。
なお、杭打機10には、通信装置及び通信装置に接続され、杭打機10の各装置の動作を制御する制御装置を備えており、杭打機10は、通信による遠隔操作が可能となっており、杭取付補助装置20の開閉用シリンダ装置27、駆動モータ255等の制御も遠隔操作により可能であり、左右の腕部23,22の開閉、ローラ252、252の回転等も遠隔操作される。
Further, in a state where the left and right arm portions 23 and 22 sandwich the steel pipe sheet pile 1, the respective driving rollers 252 of the left and right arm portions 23 and 22 are rotated in opposite directions to move the belt 253 around. The steel pipe sheet pile 1 sandwiched between the arm portions 23 and 22 can be moved back and forth, whereby the center of the steel pipe sheet pile 1 can be guided to the center of the mounting position of the steel pipe sheet pile 1 of the chuck device 14.
Note that the pile driver 10 includes a communication device and a control device that is connected to the communication device and controls the operation of each device of the pile driver 10, and the pile driver 10 can be remotely operated by communication. It is possible to control the opening / closing cylinder device 27 and the drive motor 255 of the pile mounting auxiliary device 20 by remote operation, and the opening and closing of the left and right arms 23 and 22 and the rotation of the rollers 252 and 252 are also remotely operated. Is done.

以上のような、杭打機10を用いた杭打設方法を説明する。
杭打機10は、既に連続して並んだ状態に圧入した既設の鋼管矢板1のうちの最後に圧入された連続する三本の鋼管矢板1をクランプで掴んだ状態で、鋼管矢板1上に固定された状態となっている。そして、その後方の既設の鋼管矢板1上には図示しないクレーンがやはり鋼管矢板1上に固定された状態なっている。そして、クレーンは、一本の鋼管矢板1をジブで吊った状態で、ジブを旋回することにより、杭打機10の右側もしくは左側から鋼管矢板1を搬入する。なお、杭打機10に対して鋼管矢板1を右側と左側とのどちらから搬入するかは、障害物や安全性等を考慮して周囲の状況に応じて決められる。
A pile driving method using the pile driving machine 10 as described above will be described.
The pile driving machine 10 is placed on the steel pipe sheet pile 1 in a state where the three continuous steel pipe sheet piles 1 that have been press-fitted among the existing steel pipe sheet piles 1 that have already been press-fitted in a continuously aligned state are gripped by a clamp. It is in a fixed state. A crane (not shown) is also fixed on the steel pipe sheet pile 1 on the existing steel pipe sheet pile 1 behind it. And a crane carries in the steel pipe sheet pile 1 from the right side or the left side of the pile driver 10 by turning a jib in the state which suspended the one steel pipe sheet pile 1 with the jib. Note that whether the steel pipe sheet pile 1 is carried into the pile driving machine 10 from the right side or the left side is determined according to the surrounding situation in consideration of obstacles, safety, and the like.

この例では、図1(A)に示すように、杭打機10の右側から鋼管矢板1を搬入するものとする。この場合に左右の腕部23,22のうちの鋼管矢板(杭)が搬入される側の腕部22(ここでは右)を下にし、この腕部22よりこの腕部22の反対側の腕部23を上にする。この際には、左右の腕部23,22の上下位置が完全に重ならないようにし、左右の腕部23,22の間に上下に間隔があくようにする。
そして、上にされた腕部23においては、開閉用シリンダ装置27を伸長し、腕部23の挟持部25の内側の側面がチャック装置14の左右の中心に対応して鋼管矢板1の中心を配置した際に、鋼管矢板1の外周面に接触する位置とする。すなわち、腕部23の挟持部25の内面が、チャック装置14に挟持された鋼管矢板1の中心から鋼管矢板1の半径もしくはそれより僅かに近い距離に配置される。
In this example, the steel pipe sheet pile 1 is carried in from the right side of the pile driver 10 as shown in FIG. In this case, of the left and right arm portions 23, 22, the arm portion 22 (here, the right) on the side where the steel pipe sheet pile (pile) is carried is placed downward, and the arm on the opposite side of the arm portion 22 from the arm portion 22. Part 23 is facing up. At this time, the vertical positions of the left and right arm portions 23 and 22 are not completely overlapped, and the left and right arm portions 23 and 22 are spaced vertically.
In the arm portion 23 that is raised, the opening / closing cylinder device 27 is extended, and the inner side surface of the clamping portion 25 of the arm portion 23 corresponds to the left and right centers of the chuck device 14 and the center of the steel pipe sheet pile 1. When arranged, the position is in contact with the outer peripheral surface of the steel pipe sheet pile 1. That is, the inner surface of the clamping part 25 of the arm part 23 is arranged at a distance slightly closer to the radius of the steel pipe sheet pile 1 from the center of the steel pipe sheet pile 1 clamped by the chuck device 14.

この状態で、鋼管矢板1の搬入が行われる。この際に吊られた鋼管矢板1の下端の高さを、ほぼ高い方の腕部23の高さに合わせる。この際に、必ず、鋼管矢板1の下端の高さを低い方の腕部22より高くし、かつ、鋼管矢板1の下端の高さが高い方の腕部23の上端より低くする。
そして、クレーンのジブの旋回により鋼管矢板1を杭打機10の側方から旋回マスト13より前の腕部22,23を通過する経路で搬入する。この際には、吊られた鋼管矢板1が低い方の腕部22の上を通過して、高い方の腕部23の内面にゆっくりと接触するようにする。
鋼管矢板1が高い方の腕部23の内面に接触した状態でクレーンのジブの旋回を止めることにより、鋼管矢板1の左右方向の位置が大まかに決められた状態となる。この状態で、図1(B)に示すように、鋼管矢板1の下端が低い方の腕部22より下で、かつ、チャック装置14のチャック部143より上となるように鋼管矢板1を降下させる。
In this state, the steel pipe sheet pile 1 is carried in. At this time, the height of the lower end of the steel pipe sheet pile 1 suspended is adjusted to the height of the upper arm 23. At this time, the height of the lower end of the steel pipe sheet pile 1 is always higher than that of the lower arm portion 22, and the lower end of the steel pipe sheet pile 1 is always lower than the upper end of the arm portion 23 of the higher one.
And the steel pipe sheet pile 1 is carried in by the path | route which passes along the arm parts 22 and 23 ahead of the turning mast 13 from the side of the pile driving machine 10 by turning of the jib of a crane. At this time, the suspended steel pipe sheet pile 1 passes over the lower arm portion 22 and slowly comes into contact with the inner surface of the higher arm portion 23.
By stopping the turning of the jib of the crane while the steel pipe sheet pile 1 is in contact with the inner surface of the higher arm portion 23, the position in the left-right direction of the steel pipe sheet pile 1 is roughly determined. In this state, as shown in FIG. 1 (B), the steel pipe sheet pile 1 is lowered so that the lower end of the steel pipe sheet pile 1 is below the lower arm portion 22 and above the chuck portion 143 of the chuck device 14. Let

次ぎに左右の腕部23,22の開閉用シリンダ装置27,27を伸長させる。なお、高い方の腕部23は、上述のように既に開閉用シリンダ装置27,27が伸長された状態なのでこれを維持する。これにより、鋼管矢板1は、左右の腕部23,22の挟持部25,25により押されてさらに正確に鋼管矢板1の左右方向の位置決めが行われる。なお、この状態で鋼管矢板1の前後位置は、例えば、クレーンにより鋼管矢板1を搬入する際に鋼管矢板1が旋回マスト13の前のチャック装置14の昇降用シリンダ装置141,141等にぶつからないように余裕をみて、チャック装置14の鋼管矢板1を掴む位置より僅かに前にされている。   Next, the opening and closing cylinder devices 27 and 27 of the left and right arm portions 23 and 22 are extended. The higher arm 23 is maintained because the open / close cylinder devices 27 and 27 are already extended as described above. Thereby, the steel pipe sheet pile 1 is pushed by the clamping parts 25, 25 of the left and right arm parts 23, 22, and the steel pipe sheet pile 1 is positioned more accurately in the left-right direction. In this state, for example, when the steel pipe sheet pile 1 is carried in by a crane, the steel pipe sheet pile 1 does not collide with the lifting cylinder devices 141 and 141 of the chuck device 14 in front of the turning mast 13. Thus, with a margin, the chuck device 14 is slightly forward of the position where the steel pipe sheet pile 1 is gripped.

そこで、挟持部25,25のベルト253,253の外周面が挟持部25,25の内面側で後方に移動するように、駆動ローラ252を駆動モータ255により回転させる。これにより、図2(C)に示すように、鋼管矢板1が後方に移動し、鋼管矢板1の前後方向の位置がチャック装置14が鋼管矢板1を掴む位置に合わせられ、鋼管矢板1の左右方向と前後方向の位置合わせが行われたことになる。なお、クレーンのオペレータは、鋼管矢板1が高い方の腕部23に接触した場合や、鋼管矢板1が左右の腕部23,22に挟まれ左右方向の位置合わせがなされた場合や、鋼管矢板1が挟持部25,25のベルトにより前後に移動された場合などに、鋼管矢板1がほぼ垂直になるように、クレーンを操作する。   Therefore, the drive roller 252 is rotated by the drive motor 255 so that the outer peripheral surfaces of the belts 253 and 253 of the sandwiching portions 25 and 25 move rearward on the inner surface side of the sandwiching portions 25 and 25. 2C, the steel pipe sheet pile 1 moves backward, the position of the steel pipe sheet pile 1 in the front-rear direction is adjusted to the position where the chuck device 14 grips the steel pipe sheet pile 1, and the left and right sides of the steel pipe sheet pile 1 are aligned. The direction and the front-rear direction are aligned. In addition, the operator of a crane is the case where the steel pipe sheet pile 1 contacts the upper arm part 23, the case where the steel pipe sheet pile 1 is sandwiched between the left and right arm parts 23 and 22, and the left and right alignment is performed, or the steel pipe sheet pile. The crane is operated so that the steel pipe sheet pile 1 becomes substantially vertical when 1 is moved back and forth by the belt of the clamping portions 25 and 25.

そして、鋼管矢板1の位置合わせが終了した時点で、左右の腕部23,22の開閉用シリンダ装置27,27を短縮して左右の腕部23,22を開いた状態とし、この状態で、鋼管矢板1をその下端がチャック装置14内に挿入されるように降下させる。そして、鋼管矢板1がチャック装置14内に降下した状態で、チャック装置14の可動爪144,…をチャック部143の中心側に前進させて鋼管矢板1を掴ませる。   Then, when the alignment of the steel pipe sheet pile 1 is completed, the cylinder devices 27 and 27 for opening and closing the left and right arm portions 23 and 22 are shortened to open the left and right arm portions 23 and 22. The steel pipe sheet pile 1 is lowered so that the lower end thereof is inserted into the chuck device 14. Then, with the steel pipe sheet pile 1 lowered into the chuck device 14, the movable claws 144,... Of the chuck device 14 are advanced to the center side of the chuck portion 143 to grip the steel pipe sheet pile 1.

次ぎに、クランプに掴まれた既設の鋼管矢板から反力を取った状態で、チャック装置14に掴まれた鋼管矢板1をチャック装置14を降下させることで地盤2に圧入する。なお、この際には、鋼管矢板1を離した状態のチャック装置14を上昇させた後に、再び鋼管矢板1を掴んだ状態のチャック装置14を降下させることを繰り返すことで、鋼管矢板1を所定の深さまで圧入する。   Next, the steel pipe sheet pile 1 held by the chuck device 14 is pressed into the ground 2 by lowering the chuck device 14 in a state where the reaction force is taken from the existing steel pipe sheet pile held by the clamp. In this case, after raising the chuck device 14 in a state where the steel pipe sheet pile 1 has been released, the chuck device 14 in a state where the steel pipe sheet pile 1 is gripped is repeatedly lowered, so that the steel pipe sheet pile 1 is predetermined. Press fit to a depth of.

以上のように、この例によれば、杭打機10により鋼管矢板1(杭)を打設するために、杭打機10に鋼管矢板1を取り付ける際に、吊られた鋼管矢板1の位置決めを作業者が行う必要がなく、杭打機10に設けられた杭取付補助装置20により、鋼管矢板1の位置決めを行うことができる。従って、鋼管矢板1の位置決めのために、作業者が高所作業を行ったたり、吊られた状態の重量物である鋼管矢板1を取り扱う必要がなくなり、杭打機10による杭打設方法において、作業性の大幅な向上を図ることができる。   As described above, according to this example, when the steel pipe sheet pile 1 is attached to the pile driving machine 10 in order to drive the steel pipe sheet pile 1 (pile) by the pile driving machine 10, the suspended steel pipe sheet pile 1 is positioned. Therefore, the steel pipe sheet pile 1 can be positioned by the pile mounting auxiliary device 20 provided in the pile driving machine 10. Therefore, in order to position the steel pipe sheet pile 1, it is not necessary for the worker to work at a high place or handle the steel pipe sheet pile 1 that is a heavy object in a suspended state. The workability can be greatly improved.

なお、上記例では、杭として鋼管矢板1を用いたが、本発明の杭打機は、鋼管矢板1以外の各種杭((普通)鋼矢板、コンクリート矢板(杭)、H鋼矢板(杭)、特殊鋼矢板(ゼロ矢板))にも対応可能である。但し、杭の形状等に対応して杭打機は、その一部を変更したり、杭の形状に対応した専用の杭打機を用意したりするなどの必要がある。また、上記例では、鋼管矢板1の前後の位置決めに杭取付補助装置20に設けられたベルト253,253等を有して前後移動手段となる挟持部25,25を用いたが、例えば、左右の腕部23,22の内側の側面に杭を案内させた状態で、クレーンの操作により前後位置を決めるものとしても良い。この場合も、単にクレーンで位置決めするのではなく、左右の腕部22,23により前後方向だけに移動可能に案内された状態の杭の前後位置を決めるので、作業者のアシストなしにクレーンの操作により容易に前後位置を決めることができる。
また、上記例の杭打設方法では、位置決めされた杭をチャック装置14に掴ませる際に、左右の腕部23,22を開いた状態としたが、左右の腕部22,23に摩擦低減手段となるガイドローラを有する挟持部を備え、左右の腕部23,22を閉じた状態で、挟持部のガイドローラにガイドさせならが、杭を下降させるものとしても良い。また、上記例では、左右の腕部23,22の高さ位置を異なるものとしたが、左右の腕部23,22の高さ位置を同じにしても良い。
In the above example, the steel pipe sheet pile 1 was used as the pile. However, the pile driving machine of the present invention is a pile other than the steel pipe sheet pile 1 ((ordinary) steel sheet pile, concrete sheet pile (pile), H steel sheet pile (pile)). Special steel sheet piles (zero sheet piles) are also available. However, it is necessary to change a part of the pile driving machine corresponding to the shape of the pile or to prepare a dedicated pile driving machine corresponding to the shape of the pile. Moreover, in the said example, although the clamping parts 25 and 25 which have the belts 253 and 253 etc. which were provided in the pile attachment auxiliary | assistance apparatus 20 for positioning in the front-back direction of the steel pipe sheet pile 1 and used as a back-and-forth moving means were used, The front and rear positions may be determined by operating the crane in a state where the piles are guided to the inner side surfaces of the arm portions 23 and 22. In this case as well, the position of the pile in the state guided by the left and right arm portions 22 and 23 so as to be movable only in the front-rear direction is determined rather than simply positioning with the crane, so that the crane can be operated without the assistance of the operator. Thus, the front and rear positions can be easily determined.
In the pile driving method of the above example, the left and right arm portions 23 and 22 are opened when the chuck device 14 grips the positioned pile, but the left and right arm portions 22 and 23 are reduced in friction. A pinching portion having a guide roller as a means is provided, and the piles may be lowered while being guided by the guide roller of the pinching portion with the left and right arm portions 23 and 22 closed. In the above example, the height positions of the left and right arm portions 23 and 22 are different from each other, but the height positions of the left and right arm portions 23 and 22 may be the same.

次ぎに本発明の第2実施形態の杭打機及び杭打設方法を説明する。
なお、第2実施形態の杭打機10は、杭取付補助装置20の挟持部33等が異なる以外は、第1実施形態の杭打機10とほぼ同様の構成を有するものであり、以下に第1実施形態と異なる部分を主に説明する。
図4に示すように、第2実施形態の杭打機10は杭として鋼矢板4を用いるものであるが、クランプやチャック装置14が鋼管矢板1用ではなく、鋼矢板4用とされている以外は、杭取付補助装置20を除いて、第1実施形態と同様の構成となっている。
Next, a pile driving machine and a pile driving method according to the second embodiment of the present invention will be described.
In addition, the pile driver 10 of 2nd Embodiment has a structure substantially the same as the pile driver 10 of 1st Embodiment except the clamping parts 33 of the pile attachment auxiliary | assistance apparatus 20, etc. differing below. A different part from 1st Embodiment is mainly demonstrated.
As shown in FIG. 4, the pile driving machine 10 of the second embodiment uses the steel sheet pile 4 as a pile, but the clamp and chuck device 14 are not for the steel pipe sheet pile 1 but for the steel sheet pile 4. Except for the pile mounting auxiliary device 20, the configuration is the same as that of the first embodiment.

そして、第2実施形態の杭取付補助装置は、腕部22,23を上下動させる上下用ポスト21,21とスライダ24,24とに代えて、平行リンク部26が接続されるとともに、杭打機10のチャック装置14に固定される固定部32と、ガイドローラ31,31を備える挟持部25,25とを除いて第1実施形態の杭取付補助装置20とほぼ同様の構成を有するものを用いる。固定部32は、チャック装置14の支持部142の昇降用シリンダ装置141の前に固定されるとともに、平行リンク部26の各リンク片261,…と開閉用シリンダ装置27が回動自在に軸支されている。   And the pile attachment auxiliary | assistance apparatus of 2nd Embodiment replaces with the vertical posts 21 and 21 and the sliders 24 and 24 which move the arm parts 22 and 23 up and down, and a parallel link part 26 is connected, and pile driving | operation Except for the fixing part 32 fixed to the chuck device 14 of the machine 10 and the clamping parts 25, 25 provided with the guide rollers 31, 31, those having substantially the same configuration as the pile mounting auxiliary device 20 of the first embodiment Use. The fixing portion 32 is fixed in front of the lifting / lowering cylinder device 141 of the support portion 142 of the chuck device 14, and each link piece 261,... Of the parallel link portion 26 and the opening / closing cylinder device 27 are rotatably supported. Has been.

挟持部33,33は、上述の挟持部25,25と同様に上下二枚のブラケット34,34からなるとともに、ブラケット34,34は、その突出部35,35が第1実施形態の挟持部25,25とほぼ同様に平行リンク部26,26と開閉用シリンダ装置27とに接合されている。そして、二枚のブラケット34,34の内側の側縁部同士の間には、ブラケット34,34の内側の側縁に沿って(杭打機10の前後方向にそって)ガイドローラ31,31が回動自在に配置されている。また、ガイドローラ31,31の外周面は、二枚のブラケット34,34の内側の側縁より内側に僅かに突出しており、鋼矢板4を二つの挟持部25,25が挟んだ際にガイドローラ31,31が接触するようになっている。   The clamping parts 33, 33 are composed of two upper and lower brackets 34, 34 in the same manner as the clamping parts 25, 25 described above, and the brackets 34, 34 have projecting parts 35, 35 of the clamping part 25 of the first embodiment. , 25 are joined to the parallel link portions 26, 26 and the opening / closing cylinder device 27 in substantially the same manner. Between the inner side edges of the two brackets 34, 34, the guide rollers 31, 31 are provided along the inner side edges of the brackets 34, 34 (along the front-rear direction of the pile driving machine 10). Is rotatably arranged. Further, the outer peripheral surfaces of the guide rollers 31 and 31 slightly protrude inward from the inner side edges of the two brackets 34 and 34, and guide the steel sheet pile 4 when the two sandwiching portions 25 and 25 sandwich it. The rollers 31 are in contact with each other.

このような挟持部33,33を有する杭取付補助装置20を用いた杭打機10においては、上述の杭打設方法における杭打機への杭の取付方法とほぼ同様に、鋼矢板4の取付が行われるが、左右の腕部23,22の高さ位置が同じで、かつ固定されているので、鋼矢板4を左右の腕部23,22の間に誘導する際に、左右の腕部23,22の前側もしくは左右の腕部23,22の上側から誘導することになる。そのため、上記例のように左右の腕部23,22の高さ位置を異なるものとした場合よりは、左右の腕部23,22の間に鋼矢板4を挿入するのに手間がかかるが、左右の腕部23,22を両方とも開いた状態として、左右の腕部23,22の間隔を広くすることで、容易に左右の腕部23,22の間に鋼矢板4を誘導できる。そして、左右の腕部23,22を閉じることにより、鋼矢板4の左右方向の位置合わせが行われる。   In the pile driving machine 10 using the pile attachment auxiliary device 20 having such sandwiching portions 33, 33, the pile of the steel sheet pile 4 is substantially the same as the method of attaching the pile to the pile driving machine in the above-described pile driving method. Although the attachment is performed, the left and right arm portions 23 and 22 have the same height position and are fixed, so when guiding the steel sheet pile 4 between the left and right arm portions 23 and 22, It is guided from the front side of the parts 23 and 22 or the upper side of the left and right arm parts 23 and 22. Therefore, it takes more time to insert the steel sheet pile 4 between the left and right arm parts 23 and 22 than when the height positions of the left and right arm parts 23 and 22 are different as in the above example. The steel sheet pile 4 can be easily guided between the left and right arm portions 23 and 22 by widening the distance between the left and right arm portions 23 and 22 with both the left and right arm portions 23 and 22 being opened. And the left-right direction alignment of the steel sheet pile 4 is performed by closing the left and right arm parts 23 and 22.

鋼矢板4の左右方向への位置決めの後に行われる前後の位置決めに際しては、鋼矢板4を移動させるベルトがないので、クレーンにより左右の腕部23,22により前後方向だけに移動可能に案内された鋼矢板4を前後方向に移動して前後方向の位置合わせを行う。この際には、スムーズに鋼矢板4を前後に移動できるように、例えば、腕部22,23の挟持部33,33の内側面の位置が、上述のようにチャック装置14の鋼矢板4を掴む部分の中心から鋼矢板の左右幅の半分(鋼管矢板の半径に対応)の距離より僅かに短い距離となっているよりも、鋼矢板の左右幅の半分の距離と同じか、前記距離より僅かに広いことが好ましい。
次いで、左右方向及び前後方向の位置決めが終了した後に、鋼矢板4を下降させて、鋼矢板4をチャック装置14に掴ませる場合には、左右の挟持部33,33の開閉用シリンダ装置27,27を短縮させることなく伸長させたまままの状態で、左右の腕部23,22を閉じた状態に保持し、左右の挟持部33,33のガイドローラ31,31にガイドさせた状態で鋼矢板4を降下させることができる。これにより、吊られた鋼矢板4が揺れるようなことがなく、チャック装置14に対してより正確な位置に鋼矢板4を降ろすことができる。
Since there is no belt for moving the steel sheet pile 4 after the steel sheet pile 4 is positioned in the left-right direction, the crane is guided by the crane so that it can move only in the front-rear direction. The steel sheet pile 4 is moved in the front-rear direction to align in the front-rear direction. At this time, in order to smoothly move the steel sheet pile 4 back and forth, for example, the positions of the inner side surfaces of the clamping portions 33 and 33 of the arm portions 22 and 23 are adjusted so that the steel sheet pile 4 of the chuck device 14 is moved as described above. It is the same as the distance of the half of the left and right width of the steel sheet pile, or less than the distance of the half of the left and right width of the steel sheet pile (corresponding to the radius of the steel pipe sheet pile) from the center of the gripping part, or from the above distance Slightly wider is preferred.
Next, after the positioning in the left-right direction and the front-rear direction is finished, when the steel sheet pile 4 is lowered and the steel sheet pile 4 is gripped by the chuck device 14, the opening / closing cylinder devices 27, 33 of the left and right clamping portions 33, 33 are arranged. The steel sheet pile in a state in which the left and right arm portions 23 and 22 are held in a closed state and are guided by the guide rollers 31 and 31 of the left and right clamping portions 33 and 33 in a state in which the arm 27 is left extended without being shortened. 4 can be lowered. Thereby, the suspended steel sheet pile 4 does not shake, and the steel sheet pile 4 can be lowered to a more accurate position with respect to the chuck device 14.

次ぎに本発明の第3実施形態の杭打機及び杭打設方法を説明する。
なお、第3実施形態の杭打機10は、図5に示すように、杭取付補助装置50が異なる以外は、第1実施形態の杭打機10と同様の構成を有するものであり、以下に第1実施形態と異なる部分を主に説明する。
図6及び図7に示すように、第3実施形態の杭打機10の杭取付補助装置50は、基本的な構成が第1実施形態の杭取付補助装置20とほぼ同様となっており、前記チャック部143の左右の側部にほぼ垂直に配置された二つの上下用ポスト51,51と、二つの上下用ポスト51,51にそれぞれ設けられた左右の腕部53,52とからなる。
Next, a pile driving machine and a pile driving method according to a third embodiment of the present invention will be described.
In addition, as shown in FIG. 5, the pile driver 10 of 3rd Embodiment has the structure similar to the pile driver 10 of 1st Embodiment except the pile attachment auxiliary | assistance apparatus 50 differing, The differences from the first embodiment are mainly described below.
As shown in FIG.6 and FIG.7, the pile attachment auxiliary | assistance apparatus 50 of the pile driving machine 10 of 3rd Embodiment is as substantially the same as the pile attachment auxiliary | assistance apparatus 20 of 1st Embodiment, The upper and lower posts 51 and 51 are arranged substantially vertically on the left and right sides of the chuck portion 143, and the left and right arms 53 and 52 are provided on the two upper and lower posts 51 and 51, respectively.

上下用ポスト51,51は、左右の腕部53,52の後述のスライダ54,54が上下動自在に嵌合するとともに、内部にスライダ54,54を上下に駆動して、左右の腕部53,52を昇降する上下動手段となる図示しない上下用シリンダ装置を備えている。
前記腕部52,53は、第1実施形態の腕部22,23と同様に、図6,7に示すように、スライダ54,54と、挟持部55,55と、平行リンク部56,56と、開閉用シリンダ装置57、57とを備える。なお、第3実施形態の説明において、第1実施形態と同じ名称の構成部材は、第1の実施形態の同じ名称の構成部材と同じ機能を有する。
The vertical posts 51, 51 are fitted with sliders 54, 54 (described later) of the left and right arm portions 53, 52 so as to freely move up and down, and the sliders 54, 54 are driven up and down to move the left and right arm portions 53. , 52 is provided with a vertical cylinder device (not shown) that serves as a vertical movement means for moving up and down.
Like the arm portions 22 and 23 of the first embodiment, the arm portions 52 and 53 have sliders 54 and 54, sandwiching portions 55 and 55, and parallel link portions 56 and 56, as shown in FIGS. And cylinder devices 57 and 57 for opening and closing. In the description of the third embodiment, the constituent member having the same name as that of the first embodiment has the same function as the constituent member having the same name of the first embodiment.

そして、スライダ54,54は、上下用ポスト51,51の上下動手段となる上下用シリンダ装置により上下動自在となっており、これにより左右の腕部53,52の高さを調整したり、未使用時に図7(B),(C)に示すように、左右の腕部53,52を降下させて収納した状態としたりすることができる。なお、左右の腕部53,52を降下させて収納した状態とすることにより、杭取付補助装置50の左右の腕部53,52が作業や搬送等の邪魔とならないようにできる。また、第1実施形態の場合と同様に左右の腕部53,52の高さ位置を互いに異なるようにすることも可能である。   The sliders 54, 54 can be moved up and down by an up / down cylinder device that is a vertical movement means of the up / down posts 51, 51, thereby adjusting the heights of the left and right arm portions 53, 52, When not in use, as shown in FIGS. 7B and 7C, the left and right arm portions 53 and 52 can be lowered and stored. In addition, by setting the left and right arm portions 53 and 52 in the lowered state, the left and right arm portions 53 and 52 of the pile attachment assisting device 50 can be prevented from interfering with work and transportation. Further, as in the case of the first embodiment, the height positions of the left and right arm portions 53 and 52 can be made different from each other.

平行リンク部56,56は、第1の実施形態と同様にリンク片561,…を有するが、第1実施形態では、平衡リンク部26,26は、ほぼ水平な平面に沿って挟持部25,25を左右に平行移動させるものとなっていたのに対して、平行リンク部56,56は、図7(A)に示すように、左右の挟持部55,55をほぼ垂直な平面に沿って平行移動させるようになっている。
開閉用シリンダ装置57は、一端部がスライダ54,54の挟持部55,55側に突出したフランジ部542,542に回動自在に接合され、他端部が挟持部55,55に回動自在に接合され、スライダ54,54に平行リンク部56,56を介して左右に移動自在に支持された挟持部55,55を左右に駆動するものである。
The parallel link portions 56, 56 have link pieces 561,... As in the first embodiment. However, in the first embodiment, the balanced link portions 26, 26 have the holding portions 25, 26 along a substantially horizontal plane. As shown in FIG. 7A, the parallel link portions 56 and 56 move the left and right holding portions 55 and 55 along a substantially vertical plane. It is designed to translate.
The opening / closing cylinder device 57 is rotatably joined at one end to flanges 542 and 542 protruding toward the sandwiching portions 55 and 55 of the sliders 54 and 54, and the other end is pivotable to the sandwiching portions 55 and 55. Are connected to the sliders 54 and 54, and are supported by the sliders 54 and 54 through the parallel link portions 56 and 56 so as to be movable left and right.

挟持部55,55は、第1実施形態の挟持部25,25と同様の構成と機能を有するもので、挟持部25,25と同様に、上下二枚のブラケット551,551と、二つのローラ552,…と、ベルト553とを備える。ブラケット251,251は、下側に突出する突出部554,554を有し、該突出部554,554に前記リンク片561,…及び開閉用シリンダ装置57,57の端部が回動自在に接合される。前後のローラ552,…のうちの一方のローラ552には、駆動モータ555,555が接続されて駆動ローラ552とっている。   The sandwiching portions 55 and 55 have the same configuration and function as the sandwiching portions 25 and 25 of the first embodiment. Like the sandwiching portions 25 and 25, the upper and lower brackets 551 and 551, and two rollers ,... And a belt 553. The brackets 251 and 251 have projecting portions 554 and 554 projecting downward, and the end portions of the link pieces 561 and the opening / closing cylinder devices 57 and 57 are rotatably joined to the projecting portions 554 and 554. Is done. Drive motors 555 and 555 are connected to one roller 552 of the front and rear rollers 552,.

そして、第3実施形態の杭打機10による杭打設方法は、第1実施形態における杭打設方法と同様に行うことができるとともに、図5及び図6に示すように、左右の挟持部55,55の高さを同じとして、これら左右の挟持部55,55の間隔を広くあけた状態で、前側から鋼管矢板1を左右の挟持部55,55の間に挿入するものとしても良い。また、第3実施形態の杭打機10及び杭打設方法によれば、第1実施形態と同様の作用効果が得られるとともに、左右腕部52,53を上下動する上下動手段としての上下用シリンダ装置を備えることで、左右腕部53,52の高さ調整を容易に行うことができる。また、平行リンク部56,56は、垂直平面に沿って左右の挟持部55,55を移動して左右の挟持部55,55を開閉できるようになっているとともに、平行リンク部56,56及び開閉用シリンダ装置57,57を上下用ポスト51,51に沿ってほぼ垂直に立てた状態にできることから、左右の腕部52,53を最も低く降ろした状態で、平行リンク部56,56及び開閉用シリンダ装置57,57を上下用ポスト51,51に沿ってほぼ垂直に立てた状態とすることにより、杭取付補助装置50を極めてコンパクトに収納した状態とすることができる。
また、第3実施形態の挟持部として第2実施形態で用いられた挟持部33,33を用いるものとしても良い。
And the pile placing method by the pile driving machine 10 of 3rd Embodiment can be performed similarly to the pile placing method in 1st Embodiment, and as shown to FIG.5 and FIG.6, as shown in FIG.5 and FIG.6, right and left clamping part It is good also as what inserts the steel pipe sheet pile 1 between the right and left clamping parts 55 and 55 from the front side in the state which opened the space | interval of these right and left clamping parts 55 and 55 widely, making the height of 55 and 55 the same. Further, according to the pile driving machine 10 and the pile placing method of the third embodiment, the same effect as that of the first embodiment can be obtained, and the vertical movement as the vertical movement means for moving the left and right arm portions 52 and 53 up and down. By providing the cylinder device for use, the height adjustment of the left and right arm portions 53 and 52 can be easily performed. The parallel link portions 56, 56 can move the left and right holding portions 55, 55 along the vertical plane to open and close the left and right holding portions 55, 55, and the parallel link portions 56, 56 and Since the opening and closing cylinder devices 57 and 57 can be set substantially vertically along the upper and lower posts 51 and 51, the parallel link portions 56 and 56 and the opening and closing are opened with the left and right arm portions 52 and 53 lowered to the lowest. By making the cylinder devices 57 and 57 stand substantially vertically along the upper and lower posts 51 and 51, the pile mounting auxiliary device 50 can be stored in a very compact state.
Moreover, it is good also as what uses the clamping parts 33 and 33 used in 2nd Embodiment as a clamping part of 3rd Embodiment.

本発明の第1実施形態の杭打機を示すとともに杭打設方法を説明するための図面である。BRIEF DESCRIPTION OF THE DRAWINGS It is drawing for demonstrating the pile driving method while showing the pile driving machine of 1st Embodiment of this invention. 前記杭打機を示すとともに杭打設方法を説明するための図面である。It is drawing for demonstrating the pile driving method while showing the said pile driver. 前記杭打機の杭取付補助装置を示す図面である。It is drawing which shows the pile attachment auxiliary | assistance apparatus of the said pile driver. 本発明の第2実施形態の杭打機の杭取付補助装置を示す図面である。It is drawing which shows the pile attachment auxiliary | assistance apparatus of the pile driver of 2nd Embodiment of this invention. 本発明の第3実施形態の杭打機を示すとともに杭打設方法を説明するための図面である。It is drawing for demonstrating the pile driving method while showing the pile driving machine of 3rd Embodiment of this invention. 第3実施形態の杭打機の杭取付補助装置を示す図面である。It is drawing which shows the pile attachment auxiliary | assistance apparatus of the pile driver of 3rd Embodiment. 第3実施形態の杭打機の杭取付補助装置を示す図面である。It is drawing which shows the pile attachment auxiliary | assistance apparatus of the pile driver of 3rd Embodiment.

符号の説明Explanation of symbols

1 鋼管矢板(杭)
4 鋼矢板(杭)
10 杭打機
14 チャック装置(杭打設装置)
20 杭取付補助装置
22 右腕部
23 左腕部
25 挟持部(前後移動手段)
252 ローラ
253 ベルト
255 駆動モータ
31 ガイドローラ
33 挟持部(摩擦低減手段)
50 杭取付補助装置
51 上下用ポスト
52 右腕部
53 左腕部
55 挟持部(前後動手段)
552 ローラ
553 ベルト
555 駆動ローラ
1 Steel pipe sheet pile (pile)
4 Steel sheet pile (pile)
10 Pile driver 14 Chuck device (Pile driver)
20 Pile attachment auxiliary device 22 Right arm part 23 Left arm part 25 Clamping part (front-rear movement means)
252 Roller 253 Belt 255 Drive motor 31 Guide roller 33 Nipping part (friction reducing means)
50 Pile Mounting Auxiliary Equipment 51 Vertical Post 52 Right Arm 53 Left Arm 55 Nipping Portion
552 Roller 553 Belt 555 Driving roller

Claims (3)

杭を着脱自在に取り付けた状態で降下させて地盤に打設する杭打設装置を備えた杭打機であって、
前記杭打設装置に吊られた状態の杭を取り付ける際に、前記杭打設装置の上方で前記杭を左右から挟むようにして前記杭打設装置に案内する杭取付補助装置を備え、
前記杭取付補助装置は、前記杭を左右から挟むようにして位置合わせする左腕部及び右腕部を備え、左右の腕部のうちの少なくと一方の腕部の少なくとも一部が左右に移動自在とされており、
前記杭取付補助装置の左右の腕部のうちの一方の腕部が他方の腕部より高い位置に配置されていることを特徴とする杭打機。
A pile driving machine equipped with a pile driving device for lowering the pile in a detachable state and placing it on the ground,
When attaching a pile suspended in the pile driving device, comprising a pile attachment auxiliary device that guides the pile driving device so as to sandwich the pile from the left and right above the pile driving device,
The pile auxiliary mounting apparatus comprises a left arm and right arm to align so as to sandwich the pile from left, least also at least part of one arm of the left and right arms are movable in right and left and,
A pile driving machine characterized in that one of the left and right arm portions of the pile attachment assisting device is disposed at a position higher than the other arm portion .
前記杭取付補助装置は、左右の腕部の間に挟まれた状態の杭を前後方向に移動させる前後移動手段と、左右の腕部の間に挟まれた状態の杭を円滑に下降させる摩擦低減手段と、左右の腕部を上下動させる上下動手段とのうちの少なくとも1つを備えることを特徴とする請求項1に記載の杭打機。   The pile mounting auxiliary device includes a longitudinal movement means for moving the pile sandwiched between the left and right arm portions in the front-rear direction, and a friction for smoothly lowering the pile sandwiched between the left and right arm portions. The pile driving machine according to claim 1, further comprising at least one of a reducing means and a vertically moving means for vertically moving the left and right arm portions. 請求項1又は2に記載の杭打機を用いた杭の打設方法であって、
吊り上げた杭を前記杭取付補助装置の開いた状態の左右の腕部の間に移動し、
前記左右の腕部のうちの少なくとも一方の腕部の少なくとも一部を他方の腕部に近づけるように移動させることにより、左右の腕部の間に杭を挟んだ状態とするとともに、杭を杭打設装置に位置合わせし、
前記杭を下降させて前記杭打設装置に取り付け、前記杭打設装置を降下させることにより杭を打設することを特徴とする杭打設方法。
A pile driving method using the pile driving machine according to claim 1 or 2 ,
Move the lifted pile between the left and right arms of the pile attachment auxiliary device,
By moving at least a part of at least one of the left and right arm parts closer to the other arm part, the pile is sandwiched between the left and right arm parts, and the pile is piled Align with the placement device,
A pile driving method, wherein the pile is lowered and attached to the pile driving device, and the pile is driven by lowering the pile driving device.
JP2003358050A 2003-10-17 2003-10-17 Pile driver and pile driving method Expired - Lifetime JP4250055B2 (en)

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