JP2011052408A - Guide device for tapered pile - Google Patents

Guide device for tapered pile Download PDF

Info

Publication number
JP2011052408A
JP2011052408A JP2009200718A JP2009200718A JP2011052408A JP 2011052408 A JP2011052408 A JP 2011052408A JP 2009200718 A JP2009200718 A JP 2009200718A JP 2009200718 A JP2009200718 A JP 2009200718A JP 2011052408 A JP2011052408 A JP 2011052408A
Authority
JP
Japan
Prior art keywords
cylindrical guide
guide member
pile
end portion
spring member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2009200718A
Other languages
Japanese (ja)
Inventor
Takashi Sato
隆 佐藤
Nobuaki Shiozawa
伸明 塩沢
Masakazu Fujita
雅一 藤田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
H G SERVICE KK
Sumitomo Forestry Co Ltd
Original Assignee
H G SERVICE KK
Sumitomo Forestry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by H G SERVICE KK, Sumitomo Forestry Co Ltd filed Critical H G SERVICE KK
Priority to JP2009200718A priority Critical patent/JP2011052408A/en
Publication of JP2011052408A publication Critical patent/JP2011052408A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Piles And Underground Anchors (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide device capable of vertically guiding a tapered pile in a stable state from the start of driving to a final stage of the driving, when the tapered pile is jacked and driven into ground. <P>SOLUTION: This guide device 10 guides the tapered pile 12 so that the tapered pile 12 can be vertically driven, when the tapered pile 12 is installed in the ground by being jacked in the state of directing the side of the other end 11b with a small outside diameter downward. The guide device 10 includes a cylindrical guide member 16 through which the tapered pile 12 can be inserted, and a strip-shaped leaf spring member 15 which has at least three arc-shaped portions 15a arranged inside the cylindrical guide member 16. The strip-shaped leaf spring members 15 are arranged at spacings in the circumferential direction of the cylindrical guide member 16; the arc-shaped portions 15a are arranged in such a manner as to be elongated in the vertical direction in the state of protruding inward; an upper end portion 15b is fixed to the cylindrical guide member 16; and a lower end member 15c is arranged as a movable end slidable in the vertical direction along an inner peripheral surface of the cylindrical guide member 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、テーパー杭が鉛直に打ち込まれるようにガイドするテーパー杭のガイド装置に関する。   The present invention relates to a guide device for a tapered pile that guides the tapered pile so as to be driven vertically.

例えば軟弱地盤に住宅建築物等の建物を構築する際の基礎地盤の補強対策として、鋼管杭等の基礎杭を、圧入用重機を用いて圧入又は回転圧入することで地中に設置して、不同沈下（不等沈下）を防止できるようにしたり、基礎地盤の支持力を増大させたりすることが行われている（例えば、特許文献１参照）。これらの工法では、好ましくは支持層に向けて基礎杭を鉛直に打ち込む必要があることから、圧入装置を上下方向にスライド移動させる圧入用重機のリーダー部を鉛直に建て込むと共に、リーダー部の下端部にブレ止め用のガイド装置を設けて基礎杭をガイドすることにより、中心位置のブレを防止しつつ基礎杭を地中に打ち込むようにする工夫がなされている。   For example, as a reinforcement measure for the foundation ground when building a building such as a residential building on soft ground, foundation piles such as steel pipe piles are installed in the ground by press-fitting or rotary press-fitting using heavy press machines, It is possible to prevent uneven settlement (unequal settlement) or increase the supporting force of the foundation ground (for example, see Patent Document 1). In these methods, it is necessary to drive the foundation pile vertically toward the support layer. Therefore, the leader part of the press-fitting heavy machine that slides the press-fitting device vertically is built vertically, and the lower end of the leader part. A device has been devised that guides the foundation pile into the ground while preventing the blur at the center position by providing a guide device for preventing vibration at the part and guiding the foundation pile.

一方、一端部側から他端部側に向けて外径が縮径したテーパー形状部分を有するいわゆるテーパー杭を、外径の小さな他端部側を下方に向けて圧入用重機を用いて圧入又は回転圧入することで地中に設置した場合、このようなテーパー杭による楔効果と大きな周面摩擦力によって、テーパー杭を支持層まで打ち込まなくても、基礎地盤を効果的に補強できることが知られている（例えば、特許文献２参照）。   On the other hand, a so-called taper pile having a tapered portion whose outer diameter is reduced from one end side toward the other end side is press-fitted using a press-fitting heavy machine with the other end portion having a smaller outer diameter directed downward. When installed in the ground by rotary press-fitting, it is known that the foundation ground can be effectively reinforced without the need to drive the taper pile to the support layer due to the wedge effect of such a taper pile and the large peripheral frictional force. (For example, refer to Patent Document 2).

特開２００４−１９０３８２号公報JP 2004-190382 A 特開２００８−１９０１１６号公報JP 2008-190116 A

テーパー杭の場合もまた、基礎地盤の補強機能を最大限に発揮させるためには鉛直方向に圧入又は回転圧入してゆくこと必要である。したがって例えば圧入用重機のリーダー部の下端部にブレ止め用のガイド装置を設けてテーパー杭をガイドすることが望ましいが、従来から用いられているガイド装置では、以下のような不具合が生じることになる。   In the case of tapered piles as well, it is necessary to press fit or rotate in the vertical direction in order to maximize the reinforcement function of the foundation ground. Therefore, for example, it is desirable to guide the taper pile by providing a guide device for preventing blur at the lower end of the leader part of the press-fitting heavy machine. However, in the conventionally used guide device, the following problems occur. Become.

すなわち、従来のブレ止め用のガイド装置では、外径が変化しない直管状の基礎杭をガイドするものであるため、基礎杭が挿通される円環状のガイド部の内径を、基礎杭の外径と略等しい内径に固定しておくことにより、基礎杭の打込み開始時から打込み最終段階まで安定した状態でブレ止めを行いつつ基礎杭をガイドすることが可能である。しかしながら、一端部側から他端部側に向けて外径が縮径するテーパー杭の場合には、例えば外径の小さな下端部に合わせた内径に固定しておくと、これよりも上方部分を円環状のガイド部に挿通することができなくなり、例えば外径の大きな上端部に合わせた内径に固定しておくと、特に下端部分の周囲には円環状のガイド部の内周面との間に大きな隙間が生じて、テーパー杭の打込み開始時にブレが生じやすくなる。   That is, in the conventional anti-blur guide device, the straight pipe foundation pile whose outer diameter does not change is guided, so the inner diameter of the annular guide portion through which the foundation pile is inserted is the outer diameter of the foundation pile. It is possible to guide the foundation pile while performing anti-bluring in a stable state from the start of the foundation pile driving to the final driving stage. However, in the case of a tapered pile whose outer diameter is reduced from the one end side toward the other end side, for example, if it is fixed to the inner diameter that matches the lower end portion having a smaller outer diameter, For example, if it is fixed to the inner diameter that matches the upper end with a large outer diameter, it will be between the inner peripheral surface of the annular guide part, especially around the lower end. A large gap is generated in the taper, and blurring tends to occur at the start of driving of the tapered pile.

本発明は、このような従来の課題に着目してなされたものであり、圧入用重機を用いて圧入又は回転圧入することによってテーパー杭を地中に打ち込む際に、打込み開始時から打込み最終段階まで安定した状態でテーパー杭をガイドすることのできるテーパー杭のガイド装置を提供することを目的とする。   The present invention has been made paying attention to such a conventional problem, and when driving a taper pile into the ground by press-fitting or rotary press-fitting using a press-fitting heavy machine, the last stage of driving from the start of driving. An object of the present invention is to provide a taper pile guide device capable of guiding a taper pile in a stable state.

本発明は、一端部側から他端部側に向けて外径が縮径したテーパー形状部分を有するテーパー杭を、外径の小さな他端部側を下方に向けて圧入用重機を用いて圧入又は回転圧入することによって地中に設置する際に、テーパー杭が鉛直に打ち込まれるようにガイドするテーパー杭のガイド装置であって、前記ガイド装置は、テーパー杭を挿通可能な中空内部を有する円筒状ガイド部材と、該円筒状ガイド部材の内側に配置された少なくとも３体の円弧形状部分を有する帯板状板バネ部材とからなり、前記帯板状板バネ部材は、前記円筒状ガイド部材の周方向に間隔をおいて配置されると共に、前記円弧形状部分を前記円筒状ガイド部材の内周面から内方に突出させた状態で縦方向に延設して配置されており、且つ前記帯板状板バネ部材は、上端部分を前記円筒状ガイド部材に固定すると共に、下端部分を前記円筒状ガイド部材の内周面に沿って縦方向にスライド移動可能な可動端として取り付けられているテーパー杭のガイド装置を提供することにより、上記目的を達成したものである。   The present invention is a method of press-fitting a taper pile having a tapered portion whose outer diameter is reduced from one end side toward the other end side, using a press-fitting heavy machine with the other end portion having a smaller outer diameter directed downward. Alternatively, a taper pile guide device that guides the taper pile to be driven vertically when it is installed in the ground by rotational press-fitting, the guide device having a hollow interior through which the taper pile can be inserted. And a strip-shaped plate spring member having at least three arc-shaped portions disposed on the inside of the cylindrical guide member, the strip-shaped plate spring member including the cylindrical guide member. The belt is disposed at intervals in the circumferential direction, and is arranged extending in the vertical direction with the arc-shaped portion protruding inward from the inner circumferential surface of the cylindrical guide member, and the belt The plate-shaped leaf spring member is Provided is a guide device for a taper pile in which a portion is fixed to the cylindrical guide member and a lower end portion is attached as a movable end that is slidable in a vertical direction along the inner peripheral surface of the cylindrical guide member. Thus, the above object is achieved.

そして、本発明のテーパー杭のガイド装置では、前記帯板状板バネ部材の下端部分を、前記円筒状ガイド部材の内周面に沿ってスライド移動可能な状態で連結一体化する連結リングが設けられていることが好ましい。   In the taper pile guide device of the present invention, a connecting ring is provided that connects and integrates the lower end portion of the strip-shaped plate spring member in a state that it can slide along the inner peripheral surface of the cylindrical guide member. It is preferable that

また、本発明のテーパー杭のガイド装置では、前記帯板状板バネ部材の下方に、前記円筒状ガイド部材の内周面に沿って配置されるコイルバネが設けられており、前記帯板状板バネ部材の下端部分が、前記コイルバネの上端部に係止可能となっていることが好ましい。   In the taper pile guide device of the present invention, a coil spring disposed along the inner peripheral surface of the cylindrical guide member is provided below the strip plate-like plate spring member, and the strip plate-like plate It is preferable that the lower end portion of the spring member can be locked to the upper end portion of the coil spring.

本発明のテーパー杭のガイド装置によれば、圧入用重機を用いて圧入又は回転圧入することによってテーパー杭を地中に打ち込む際に、打込み開始時から打込み最終段階まで安定した状態でテーパー杭をガイドすることができる。   According to the taper pile guide device of the present invention, when a tapered pile is driven into the ground by press-fitting or rotary press-fitting using a press-fitting heavy machine, the tapered pile is stably maintained from the start of driving to the final driving stage. Can guide.

本発明の好ましい一実施形態に係るガイド装置を用いてテーパー杭を地中に圧入又は回転圧入する状況の説明図である。It is explanatory drawing of the condition which press-fits or press-fits a taper pile into the ground using the guide apparatus which concerns on preferable one Embodiment of this invention. （ａ）は本発明の好ましい一実施形態に係るガイド装置の構成を説明する縦断面図、（ｂ）は上面図である。(A) is a longitudinal cross-sectional view explaining the structure of the guide apparatus which concerns on preferable one Embodiment of this invention, (b) is a top view. 本発明の好ましい一実施形態に係るガイド装置によってテーパー杭をガイドする状況を説明する略示断面図である。It is a schematic sectional drawing explaining the condition which guides a taper pile by the guide apparatus which concerns on preferable one Embodiment of this invention. 円筒状ガイド部材の内周面と、帯板状板バネ部材の上端部分や下端部分との間にベアリング部材を介在させた状態を説明する部分断面図である。It is a fragmentary sectional view explaining the state which interposed the bearing member between the internal peripheral surface of a cylindrical guide member, and the upper end part and lower end part of a strip | belt-plate-shaped leaf | plate spring member.

本発明の好ましい一実施形態に係るテーパー杭のガイド装置１０は、図１に示すように、一端部１１ａ側から他端部１１ｂ側に向けて外径が縮径したテーパー形状部分１１を有するテーパー杭１２を、外径の小さな他端部１１ｂ側を下方に向けて圧入用重機１３を用いて圧入又は回転圧入することによって地中に設置する際に、テーパー杭１２の中心位置が左右にずれる現象であるブレが生じるのを効果的に抑制して、テーパー杭１２を鉛直方向に安定した状態で打ち込んでゆくことができるようにするために採用されたものである。   As shown in FIG. 1, a taper pile guide device 10 according to a preferred embodiment of the present invention has a tapered portion 11 having a tapered portion 11 whose outer diameter is reduced from the one end portion 11a side toward the other end portion 11b side. When the pile 12 is installed in the ground by press-fitting or rotary press-fitting using the press-fitting heavy machine 13 with the other end portion 11b having a small outer diameter facing downward, the center position of the tapered pile 12 is shifted left and right. This is employed to effectively suppress the occurrence of blurring as a phenomenon so that the tapered pile 12 can be driven in a stable state in the vertical direction.

すなわち、本実施形態のテーパー杭のガイド装置１０は、一端部１１ａ側から他端部１１ｂ側に向けて外径が縮径したテーパー形状部分１１を有するテーパー杭１２を、外径の小さな他端部１１ｂ側を下方に向けて圧入用重機１３を用いて圧入又は回転圧入することによって地中に設置する際に、テーパー杭１２が鉛直に打ち込まれるようにガイドするガイド装置であって、該ガイド装置１０は、図２（ａ），（ｂ）に示すように、テーパー杭１２を挿通可能な中空内部を有する円筒状ガイド部材１６と、この円筒状ガイド部材１６の内側に配置された少なくとも３体（本実施形態では８体）の円弧形状部分１５ａを有する帯板状板バネ部材１５とを含んで構成されている。また帯板状板バネ部材１５は、円筒状ガイド部材１６の周方向に間隔をおいて配置されると共に、円弧形状部分１５ａを円筒状ガイド部材１６の内周面から内方に突出させた状態で縦方向に延設して配置されており、且つ帯板状板バネ部材１５は、上端部分１５ｂを円筒状ガイド部材１６に固定すると共に、下端部分１５ｃを円筒状ガイド部材１６の内周面に沿って縦方向にスライド移動可能な可動端として取り付けられている。   That is, the taper pile guide device 10 according to the present embodiment includes a tapered pile 12 having a tapered portion 11 whose outer diameter is reduced from the one end portion 11a side toward the other end portion 11b side. A guide device that guides the taper pile 12 to be driven vertically when it is installed in the ground by press-fitting or rotary press-fitting using the press-fitting heavy machine 13 with the part 11b side facing downward, As shown in FIGS. 2A and 2B, the device 10 includes a cylindrical guide member 16 having a hollow interior through which the tapered pile 12 can be inserted, and at least 3 disposed inside the cylindrical guide member 16. And a belt-like plate spring member 15 having an arcuate portion 15a (eight bodies in the present embodiment). In addition, the strip-shaped plate spring member 15 is disposed at intervals in the circumferential direction of the cylindrical guide member 16, and the arc-shaped portion 15 a protrudes inward from the inner peripheral surface of the cylindrical guide member 16. The belt-like plate spring member 15 fixes the upper end portion 15b to the cylindrical guide member 16, and the lower end portion 15c to the inner peripheral surface of the cylindrical guide member 16. Is attached as a movable end that can be slid in the vertical direction.

また、本実施形態では、帯板状板バネ部材１５の下端部分１５ｃは、円筒状ガイド部材１６の内周面に沿ってスライド移動可能に設けられた連結リング１７を介して連結一体化されている。   Further, in the present embodiment, the lower end portion 15 c of the strip plate-like plate spring member 15 is connected and integrated via a connecting ring 17 provided so as to be slidable along the inner peripheral surface of the cylindrical guide member 16. Yes.

さらに、本実施形態では、帯板状板バネ部材１５の下方に、円筒状ガイド部材１６の内周面に沿って配置されるコイルバネ１８が設けられており、帯板状板バネ部材１５の下端部分１６ａが、連結リング１７を介してコイルバネ１８の上端部に係止可能となっている。   Furthermore, in this embodiment, a coil spring 18 disposed along the inner peripheral surface of the cylindrical guide member 16 is provided below the strip plate-like plate spring member 15, and the lower end of the strip plate-like plate spring member 15. The portion 16 a can be locked to the upper end portion of the coil spring 18 via the connection ring 17.

本実施形態では、テーパー杭１２は、例えば公知の製造方法によって筒状に成形加工された、肉厚が例えば４．５ｍｍ程度の鋼管杭である。またテーパー杭１２は、図１に示すように、例えば５００〜６００ｃｍ程度の長さを有しており、一端部１１ａ側から他端部１１ｂ側に向けて外径が縮径したテーパー形状部分１１と、テーパー形状部分１１の一端部（上端部）１１ａ側に接合一体化された、圧入用重機１３の圧入装置２４が装着される例えば３００〜５００ｍｍ程度の長さのストレート管部１９とからなっている。   In this embodiment, the taper pile 12 is a steel pipe pile having a thickness of, for example, about 4.5 mm, which is formed into a cylindrical shape by a known manufacturing method, for example. Further, as shown in FIG. 1, the taper pile 12 has a length of about 500 to 600 cm, for example, and a tapered portion 11 whose outer diameter is reduced from the one end portion 11 a side toward the other end portion 11 b side. And a straight pipe portion 19 having a length of, for example, about 300 to 500 mm to which the press-fitting device 24 of the press-fitting heavy machine 13 is attached and integrated on one end (upper end) 11a side of the tapered portion 11. ing.

また、本実施形態では、テーパー杭１２のテーパー形状部分１１は、ストレート管部１９と接合することにより当該ストレート管部１９と同じ外径を有する一端部１１ａ側の元径部分が、最大外径を有しており、この元径部分の最大外径は、例えば１２０〜４５０ｍｍ程度となっている。テーパー杭１２のテーパー形状部分１１は、その外周面が、一端部１０ａ側から他端部１０ｂ側に向けて、好ましくは１／２５〜１／２００程度の勾配で傾斜するように形成されている。   Moreover, in this embodiment, the taper-shaped part 11 of the taper pile 12 joins the straight pipe part 19, and the original diameter part by the side of the one end part 11a which has the same outer diameter as the said straight pipe part 19 is the largest outer diameter. The maximum outer diameter of the original diameter portion is, for example, about 120 to 450 mm. The taper-shaped portion 11 of the taper pile 12 is formed such that its outer peripheral surface is inclined with a gradient of preferably about 1/25 to 1/200 from the one end portion 10a side to the other end portion 10b side. .

さらに、本実施形態では、テーパー杭１２のテーパー形状部分１１の外径の小さな他端部（下端部）１０ｂには、先端開口を閉塞するようにして先端金具（図示せず）が取り付けられていると共に、切削刃２０が取り付けられている。   Further, in the present embodiment, a tip fitting (not shown) is attached to the other end portion (lower end portion) 10b having a small outer diameter of the tapered portion 11 of the tapered pile 12 so as to close the tip opening. And a cutting blade 20 is attached.

テーパー杭１２を地中に打ち込む圧入用重機１３は、例えば鋼管杭やＰＣコンクリート杭を打設する重機として公知の重機である。圧入用重機１３は、オペレータ室２１を備えるベースマシーン２２、テーパー杭１２のストレート管部１９を装着してテーパー杭１２を地中に圧入する回転駆動モータ等を備える圧入装置２４、圧入装置２４が鉛直方向にスライド移動するようにガイドするリーダー部１４等を備えている。   The press-fitting heavy machine 13 for driving the tapered pile 12 into the ground is a known heavy machine as a heavy machine for placing a steel pipe pile or a PC concrete pile, for example. The press-fitting heavy machine 13 includes a base machine 22 having an operator room 21, a press-fitting device 24 having a rotary drive motor and the like that are fitted with the straight pipe portion 19 of the tapered pile 12 and press-fitted into the ground. A leader unit 14 and the like are provided for guiding the sliding movement in the vertical direction.

また、圧入用重機１３は、オペレータ室２１に、圧入装置２４による圧入力や圧入速度、回転トルク等を管理したり制御する公知の施工管理制御システムを備えており、これによってテーパー杭１２の打ち込みを管理することができるようになっている。   Further, the press-fitting heavy machine 13 is provided with a known construction management control system that manages and controls press-fitting, press-fitting speed, rotational torque, etc. by the press-fitting device 24 in the operator room 21, thereby driving the tapered pile 12 into place. Can be managed.

そして、本実施形態では、圧入用重機１３のリーダー部１４の下端部分に、テーパー杭１２が鉛直に打ち込まれるようにガイドするブレ止め用のガイド装置１０が取り付けられている。ガイド装置１０は、図２（ａ），（ｂ）に示すように、テーパー杭１２を挿通可能な中空内部を有する円筒状ガイド部材１６と、この円筒状ガイド部材１６の内側に配置される８体の帯板状板バネ部材１５とからなる。ガイド装置１０は、円筒状ガイド部材１６の中心軸が圧入装置２４の回転軸の鉛直下方に配置されるように、一対の支持プレート２３を介してリーダー部１４の下端部分に一体として固定されることになる。   And in this embodiment, the guide apparatus 10 for blurring prevention which guides the taper pile 12 so that it may be driven vertically is attached to the lower end part of the leader part 14 of the press-fitting heavy machine 13. As shown in FIGS. 2A and 2B, the guide device 10 has a cylindrical guide member 16 having a hollow interior through which the tapered pile 12 can be inserted, and 8 arranged inside the cylindrical guide member 16. It comprises a belt-like plate spring member 15 of the body. The guide device 10 is integrally fixed to the lower end portion of the leader portion 14 via a pair of support plates 23 so that the central axis of the cylindrical guide member 16 is disposed vertically below the rotation axis of the press-fitting device 24. It will be.

ガイド装置１０を構成する円筒状ガイド部材１６は、円筒形状を径方向の分割線で２分割した半円筒形状の固定側弧状部１６ａ及び開閉側弧状部１６ｂからなり、固定側弧状部１６ａと開閉側弧状部１６ｂとは、ピン結合部２５を介して開閉可能に連結している（図２（ｂ）参照）。これによって、円筒状ガイド部材１６は、ピン結合部２５と反対側のボルト・ナットによるロック機構２９をロック状態として開閉側弧状部１６ｂを閉塞することにより、テーパー杭１２を挿通可能な中空内部を形成した状態と、ロック機構２９のロック状態を解除して開閉側弧状部１６ｂを開放することにより、テーパー杭１２からガイド装置１０を取り外すことが可能な状態とを、切り替えることができるようになっている。また、円筒状ガイド部材１６には、中空内部１５を形成した状態で４５°の等角度ピッチで配置されて、８体の帯板状板バネ部材１５が、周方向に間隔をおいて円筒状ガイド部材１６の内周面に沿って取り付けられることになる。   The cylindrical guide member 16 constituting the guide device 10 includes a semi-cylindrical fixed-side arcuate portion 16a and an open / close-side arcuate portion 16b obtained by dividing the cylindrical shape into two by a radial dividing line, and opens and closes with the fixed-side arcuate portion 16a. The side arcuate portion 16b is connected via a pin coupling portion 25 so as to be opened and closed (see FIG. 2B). Thus, the cylindrical guide member 16 closes the hollow interior in which the taper pile 12 can be inserted by closing the open / close side arcuate portion 16b with the lock mechanism 29 by the bolt and nut opposite to the pin coupling portion 25 being locked. The state in which the guide device 10 can be removed from the tapered pile 12 can be switched by releasing the lock state of the lock mechanism 29 and opening the open / close side arcuate portion 16b. ing. The cylindrical guide member 16 is arranged at an equal angular pitch of 45 ° with the hollow interior 15 formed, and eight strip plate-like leaf spring members 15 are cylindrically spaced apart in the circumferential direction. It is attached along the inner peripheral surface of the guide member 16.

本実施形態では、帯板状板バネ部材１５は、例えば幅２０〜５０ｍｍ程度、厚さ３．０〜１０．０ｍｍ程度の帯板形状の鋼板に曲折加工を施すことによって、弾性変形可能な板バネ状の部材として形成される。帯板状板バネ部材１５は、円弧形状に湾曲させた円弧形状部分１５ａと、これの両端部分を折り曲げて形成された平板形状の上端部分１５ｂ及び下端部分１５ｃとからなる形状に形成される。帯板状板バネ部材１５の上端部分１５ｂ及び下端部分１５ｃには、各々ボルト締着孔が開口形成されている。   In this embodiment, the strip-shaped plate spring member 15 is a plate that can be elastically deformed by bending a strip-shaped steel plate having a width of about 20 to 50 mm and a thickness of about 3.0 to 10.0 mm, for example. It is formed as a spring-like member. The strip-shaped plate spring member 15 is formed into a shape composed of an arc-shaped portion 15a curved into an arc shape, and a flat plate-shaped upper end portion 15b and lower end portion 15c formed by bending both end portions thereof. Bolt fastening holes are formed in the upper end portion 15b and the lower end portion 15c of the belt-like plate spring member 15, respectively.

帯板状板バネ部材１５は、円弧形状部分１５ａを円筒状ガイド部材１６の内周面から内方に突出させた状態で、互いに平行に縦方向に延設して配置されると共に、締着ボルト２６を用いて上端部分１５ｂを円筒状ガイド部材１６の上端部の内周面に固定することで、円筒状ガイド部材１６の内側に取り付けられる。これによって、８体の帯板状板バネ部材１５は、円弧形状部分１５ａの内方への突出先端部を連ねた内接円が、テーパー杭１２のテーパー形状部分１１の他端部１１ｂの外径よりもを僅かに大きな径を有するように配置されると共に、各帯板状板バネ部材１５の下端部分１５ｃは、円筒状ガイド部材１６の内周面に沿って縦方向にスライド移動可能な可動端として機能することになる。また、本実施形態では、帯板状板バネ部材１５の下端部分１５ｃは、円筒状ガイド部材１６の内周面に沿ってスライド移動可能な連結リング１７を介して連結一体化されており、この連結リング１７のスライド移動に伴って、安定した状態で縦方向にスライド移動することができるようになっている。   The strip-shaped plate spring member 15 is arranged extending in the vertical direction in parallel with each other in a state where the arc-shaped portion 15a protrudes inward from the inner peripheral surface of the cylindrical guide member 16, and is fastened. By fixing the upper end portion 15 b to the inner peripheral surface of the upper end portion of the cylindrical guide member 16 using the bolt 26, the bolt 26 is attached to the inside of the cylindrical guide member 16. As a result, the eight strip plate spring members 15 have an inscribed circle that is connected to the inwardly projecting tip portion of the arc-shaped portion 15a, outside the other end portion 11b of the tapered portion 11 of the tapered pile 12. The lower end portion 15c of each strip plate-like plate spring member 15 is slidable in the vertical direction along the inner peripheral surface of the cylindrical guide member 16 while being arranged so as to have a diameter slightly larger than the diameter. It will function as a movable end. Further, in the present embodiment, the lower end portion 15c of the strip plate-like plate spring member 15 is connected and integrated via a connecting ring 17 that is slidable along the inner peripheral surface of the cylindrical guide member 16. As the connecting ring 17 slides, it can slide in a vertical direction in a stable state.

なお、本実施形態では、８体の帯板状板バネ部材１５は、その上端部分１５ｂを、円筒状ガイド部材１６の上端部に一体接合される円環状リング部２７（図２（ａ）参照）の内周面に予め固定すると共に、その下端部分１５ｃを連結リング１７によって予め連結一体化した状態で設けておき、下端部分１５ｃを連結した連結リング１７と共に帯板状板バネ部材１５を円筒状ガイド部材１６の上方からこれの内部に挿入した後に、接合ボルト２８を用いて円環状リング部２７を円筒状ガイド部材１６の上端部に一体接合することで、８体の帯板状板バネ部材１５を円筒状ガイド部材１６の内側に容易に取り付けることができるようになっている。   In the present embodiment, the eight band plate-like leaf spring members 15 have an annular ring portion 27 (see FIG. 2A) whose upper end portion 15b is integrally joined to the upper end portion of the cylindrical guide member 16. ) Is fixed in advance to the inner peripheral surface, and the lower end portion 15c thereof is provided in a state of being connected and integrated in advance by the connecting ring 17, and the strip-shaped plate spring member 15 is formed into a cylinder together with the connecting ring 17 connecting the lower end portion 15c. The annular ring member 27 is integrally joined to the upper end of the cylindrical guide member 16 by using a joining bolt 28 after being inserted into the inside of the guide member 16 from above. The member 15 can be easily attached to the inside of the cylindrical guide member 16.

また、本実施形態では、帯板状板バネ部材１５の下端部分１５ｃを連結一体化する連結リング１７は、円筒状ガイド部材１６の内径よりも僅かに小さな外径を有する、円筒状ガイド部材１６の内周面に沿って縦方向にスライド移動可能な扁平な円筒形状の部材である。連結リング１７の内周面には、４５°の等角度ピッチで配置されて、雌ネジ孔が８箇所に形成されている。これらの雌ネジ孔に、帯板状板バネ部材１５の下端部分１５ｃに形成されたボルト締着孔を合致させて締着ボルト２６を締着して、８体の帯板状板バネ部材１５の下端部分１５ｃを各々連結リング１７に固定することで、これらの下端部分１５ｃを、円筒状ガイド部材１６の内周面に沿って縦方向にスライド移動可能な状態で連結一体化することができるようになっている。   In the present embodiment, the connecting ring 17 that connects and integrates the lower end portions 15 c of the strip-shaped plate spring member 15 has an outer diameter that is slightly smaller than the inner diameter of the cylindrical guide member 16. It is a flat cylindrical member that can be slid in the vertical direction along the inner peripheral surface. On the inner peripheral surface of the connection ring 17, the female screw holes are formed at eight positions with an equiangular pitch of 45 °. The bolt bolt holes formed in the lower end portion 15c of the strip plate-like plate spring member 15 are matched with these female screw holes, and the fastening bolts 26 are fastened, and the eight strip plate-like plate spring members 15 are attached. By fixing the lower end portions 15c to the connecting ring 17, the lower end portions 15c can be connected and integrated in a state in which the lower end portions 15c can slide in the vertical direction along the inner peripheral surface of the cylindrical guide member 16. It is like that.

さらに、本実施形態では、帯板状板バネ部材１５の下方に、円筒状ガイド部材１６の内周面に沿って配置されるコイルバネ１８が設けられている。コイルバネ１８は、金属製の線状部材や棒状部材を螺旋形状に湾曲させて形成した公知のコイル状のバネ部材であり、円筒状ガイド部材１６の内径よりも僅かに小さな外径を有するように形成される。コイルバネ１８は、円筒状ガイド部材１６の内周面に沿って配置されると共に、連結リング１７と、円筒状ガイド部材１６の下端部内周面に溶着固定された支持リング３０との間に介在して設けられる。これによって、帯板状板バネ部材１５の下端部分１６ａは、連結リング１７を介してコイルバネ１８の上端部に安定した状態で係止されることになり、テーパー杭１２を圧入又は回転圧入する際に、帯板状板バネ部材１５の弾性変形に伴ってコイルバネ１８が弾性変形することで、テーパー杭１２を鉛直方向により効果的にガイドすることが可能になる。   Furthermore, in this embodiment, a coil spring 18 disposed along the inner peripheral surface of the cylindrical guide member 16 is provided below the belt-like plate spring member 15. The coil spring 18 is a known coiled spring member formed by bending a metal linear member or rod-like member into a spiral shape, and has an outer diameter slightly smaller than the inner diameter of the cylindrical guide member 16. It is formed. The coil spring 18 is disposed along the inner peripheral surface of the cylindrical guide member 16 and is interposed between the connection ring 17 and the support ring 30 welded and fixed to the inner peripheral surface of the lower end portion of the cylindrical guide member 16. Provided. As a result, the lower end portion 16a of the strip-shaped plate spring member 15 is stably locked to the upper end portion of the coil spring 18 via the connecting ring 17, and when the tapered pile 12 is press-fitted or rotationally press-fitted. In addition, the coil spring 18 is elastically deformed along with the elastic deformation of the belt-like plate spring member 15, so that the tapered pile 12 can be effectively guided in the vertical direction.

上述の構成を有する本実施形態のガイド装置１０は、例えば地表面に杭の中心が心出しされたテーパー杭１２の打設予定箇所に円筒状ガイド部材１６の中心軸を合致させた状態で、地表面上に又は地表面に近接させて設置される。しかる後に、図３に示すように、テーパー形状部分１１の外径の小さな他端部１１ｂ側を下方に向けてテーパー杭１２を上方から円筒状ガイド部材１６に挿通しつつ、圧入用重機１３を用いて圧入又は回転圧入してゆく。   The guide device 10 of the present embodiment having the above-described configuration is, for example, in a state in which the central axis of the cylindrical guide member 16 is matched with the planned placement position of the tapered pile 12 in which the center of the pile is centered on the ground surface. It is installed on or close to the ground surface. After that, as shown in FIG. 3, the press-fitting heavy machine 13 is inserted while inserting the tapered pile 12 from above into the cylindrical guide member 16 with the other end portion 11 b having a small outer diameter of the tapered portion 11 facing downward. Use press-fitting or rotary press-fitting.

そして、本実施形態のガイド装置１０によれば、円筒状ガイド部材１６の内側に、円弧形状部分１５ａが内方に突出すると共に下端部分１５ｃがスライド移動可能な可動端となった帯板状板バネ部材１５が、円筒状ガイド部材１６の周方向に間隔をおいて少なくとも３体（本実施形態では８体）設けられているので、外径の小さな他端部（下端部）１１ｂ側から、テーパー杭１２を、円弧形状部分１５ａの内方への突出先端部を連ねた内接円に挿通しつつ下方に向けて圧入又は回転圧入してゆけば、テーパー杭１２のテーパー形状部分１１の外径が徐々に拡径してゆくのに伴って、下端部分１５ｃを下方にスライド移動させつつ帯板状板バネ部材１５が弾性変形して、円弧形状部分１５ａの内方への突出先端部を連ねた内接円を、中心位置を保持したまま徐々に拡径させてゆくことになる。これによって、テーパー杭１２の圧入又は回転圧入に伴って拡径する、円筒状ガイド部材１６に挿通された部分のテーパー形状部分１１の外径の変化に応じて、帯板状板バネ部材１５の円弧形状部分１５ａの突出先端部の内接円を拡径してゆくことが可能になり、円弧形状部分１５ａの突出先端部がテーパー形状部分１１の外周面に接触した状態を保持することで、テーパー杭１２の左右方向へのブレを効果的に抑制して、テーパー杭１２を鉛直方向に精度良くガイドして行くことが可能になる。   And according to the guide apparatus 10 of this embodiment, the strip-shaped plate in which the circular arc-shaped portion 15a protrudes inwardly and the lower end portion 15c becomes a movable end that can slide and move inside the cylindrical guide member 16. Since the spring member 15 is provided with at least three bodies (eight bodies in the present embodiment) at intervals in the circumferential direction of the cylindrical guide member 16, from the other end portion (lower end portion) 11b side having a small outer diameter, If the taper pile 12 is press-fitted or rotationally pressed downward while being inserted into an inscribed circle connecting the tip end portions projecting inwardly of the arc-shaped portion 15a, the taper pile 12 will be exposed to the outside of the taper-shaped portion 11 of the taper pile 12. As the diameter gradually increases, the strip plate-like plate spring member 15 is elastically deformed while sliding the lower end portion 15c downward, so that the tip of the arc-shaped portion 15a projecting inward is formed. Set the inscribed circles It will be gradually is expanded while equity. Thereby, according to the change of the outer diameter of the taper-shaped part 11 of the part penetrated by the cylindrical guide member 16 expanded in diameter with the press-fitting or rotation press-fitting of the taper pile 12, the strip-shaped plate spring member 15 It is possible to increase the diameter of the inscribed circle of the protruding tip portion of the arc-shaped portion 15a, and by maintaining the state where the protruding tip portion of the arc-shaped portion 15a is in contact with the outer peripheral surface of the tapered portion 11, It is possible to effectively guide the taper pile 12 in the vertical direction by effectively suppressing blurring of the taper pile 12 in the left-right direction.

すなわち、本実施形態のテーパー杭のガイド装置１０によれば、圧入用重機１３を用いて圧入又は回転圧入することによってテーパー杭１２を地中に打ち込む際に、打込み開始時から打込み最終段階まで、安定した状態でテーパー杭１２を鉛直方向にガイドしてゆくことが可能になる。   That is, according to the taper pile guide device 10 of the present embodiment, when the taper pile 12 is driven into the ground by press-fitting or rotary press-fitting using the press-fitting heavy machine 13, from the start of driving to the final driving stage, It becomes possible to guide the taper pile 12 in the vertical direction in a stable state.

また、本実施形態では、帯板状板バネ部材１５の下方に、帯板状板バネ部材１５の下端部分１６ａを係止可能なコイルバネ１８が設けられているので、コイルバネ１８の弾性力によって帯板状板バネ部材１５の弾性変形を効果的に補強することにより、帯板状板バネ部材１５がテーパー杭１２の外周面との摩擦力によって過度に変形したり、８体の帯板状板バネ部材１５の変形量にバラツキが生じるのを抑制して、より安定した状態で精度良くテーパー杭１２をガイドしてゆくことが可能になる。   Further, in the present embodiment, the coil spring 18 that can lock the lower end portion 16 a of the strip plate-like plate spring member 15 is provided below the strip plate-like plate spring member 15. By effectively reinforcing the elastic deformation of the plate-like plate spring member 15, the plate-like plate spring member 15 is excessively deformed by the frictional force with the outer peripheral surface of the tapered pile 12, or eight plate-like plate plates The variation in the deformation amount of the spring member 15 can be suppressed, and the tapered pile 12 can be guided with high accuracy in a more stable state.

さらに、本実施形態では、ガイド装置１０の帯板状板バネ部材１５は、テーパー杭１２の外周面との接触による機械的な機構によって弾性変形するので、油圧やセンサー等を用いることなく、簡易にガイド装置１０を設けることができると共に、従来型のブレ止め用のガイド装置と交換することにより、一般的な汎用の重機によっても、テーパー杭１２を精度良く鉛直方向に打設することが可能になる。   Furthermore, in the present embodiment, the strip-shaped plate spring member 15 of the guide device 10 is elastically deformed by a mechanical mechanism by contact with the outer peripheral surface of the taper pile 12, so that it can be simplified without using hydraulic pressure, sensors, or the like. The guide device 10 can be provided on the taper pile, and the taper pile 12 can be driven in the vertical direction with high accuracy even by a general-purpose heavy machine by replacing the guide device 10 with a conventional anti-blur guide device. become.

なお、本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、帯板状板バネ部材の下端部分を連結一体化する連結リングを設ける必要は必ずしも無く、帯板状板バネ部材の下方にコイルバネを設ける必要は必ずしもない。また、帯板状板バネ部材は、円筒状ガイド部材の内側に８体設ける必ずしもなく、テーパー杭のテーパー形状部分に少なくとも３方向から接触できるように、円筒状ガイド部材の中心軸を中心とする放射方向に分散配置されて、少なくとも３体設けられていれば良い。さらに、ガイド装置は、圧入用重機のリーダー部の下端部分に取り付けて用いる必要は必ずしもなく、例えば圧入用重機とは別の他の重機に支持させて用いることもできる。さらにまた、帯板状板バネ部材の上端部分は、円筒状ガイド部材の上端部の内周面に固定されている必要は必ずしもない。   The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, it is not always necessary to provide a connection ring for connecting and integrating the lower end portions of the strip plate-like plate spring member, and it is not always necessary to provide a coil spring below the strip plate-like plate spring member. In addition, eight strip plate leaf spring members are not necessarily provided on the inner side of the cylindrical guide member, but centered on the central axis of the cylindrical guide member so as to be able to contact the tapered portion of the tapered pile from at least three directions. It is sufficient that at least three bodies are provided in a distributed manner in the radial direction. Furthermore, the guide device is not necessarily used by being attached to the lower end portion of the leader portion of the press-fitting heavy machine. For example, the guide device can be supported by another heavy machine different from the press-fitting heavy machine. Furthermore, the upper end portion of the belt-like plate spring member does not necessarily need to be fixed to the inner peripheral surface of the upper end portion of the cylindrical guide member.

また、図４に示すように、円筒状ガイド部材１６の内周面と、帯板状板バネ部材１５の上端部分１５ｂや下端部分１５ｃとの間にベアリング部材３１を介在させておくこともできる。円筒状ガイド部材１６の内周面と、帯板状板バネ部材１５の上端部分１５ｂや下端部分１５ｃとの間にベアリング部材３１が介在していることにより、テーパー杭１２の回転圧入時にテーパー杭１２と帯板状板バネ部材１５との間の接触摩擦によって帯板状板バネ部材１５に円周方向の回転力が伝達されることで、円筒状ガイド部材１６の内壁面と帯板状板バネ部材１５との接着摩擦によって帯板状板バネ部材１５に捩じり力が生じたり、締着ボルト２６にせん断力が生じたりするのを、効果的に抑制することが可能になる。   Further, as shown in FIG. 4, a bearing member 31 may be interposed between the inner peripheral surface of the cylindrical guide member 16 and the upper end portion 15b and the lower end portion 15c of the strip plate-like plate spring member 15. . Since the bearing member 31 is interposed between the inner peripheral surface of the cylindrical guide member 16 and the upper end portion 15b and the lower end portion 15c of the strip plate-like leaf spring member 15, the taper pile at the time of the rotary press-fitting of the taper pile 12 The rotational force in the circumferential direction is transmitted to the belt-like plate spring member 15 by contact friction between the belt-like plate spring member 15 and the inner plate surface of the cylindrical guide member 16 and the belt-plate plate. It is possible to effectively suppress the torsional force generated in the band plate-like plate spring member 15 and the shearing force generated in the fastening bolt 26 due to the adhesive friction with the spring member 15.

さらに、円筒状ガイド部材１６の内部における帯板状板バネ部材１５の可動域や、帯板状板バネ部材１５の仕様を適宜調整することによって、帯板状板バネ部材１５の円弧形状部分１５ａの内接円の内径や、テーパー杭１２の圧入に伴う内接円の内径の拡径量や拡径後の最大内径を、適宜調整することが可能になる。   Furthermore, the arc-shaped portion 15a of the band plate-like plate spring member 15 is adjusted by appropriately adjusting the movable range of the band plate-like plate spring member 15 inside the cylindrical guide member 16 and the specifications of the band plate-like plate spring member 15. It is possible to appropriately adjust the inner diameter of the inner circle, the amount of expansion of the inner diameter of the inscribed circle accompanying the press-fitting of the tapered pile 12, and the maximum inner diameter after the expansion.

１０ ガイド装置
１１ テーパー形状部分
１１ａ テーパー形状部分の一端部
１１ｂ テーパー形状部分の他端部
１２ テーパー杭
１３ 圧入用重機
１４ リーダー部
１５ 帯板状板バネ部材
１５ａ 帯板状板バネ部材の円弧形状部分
１５ｂ 帯板状板バネ部材の上端部分
１５ｃ 帯板状板バネ部材の下端部分
１６ 円筒状ガイド部材
１７ 連結リング
１８ コイルバネ
１９ ストレート管部
２３ 支持プレート
２４ 圧入装置 DESCRIPTION OF SYMBOLS 10 Guide apparatus 11 Taper-shaped part 11a One end part 11b of a taper-shaped part The other end part 12 of a taper-shaped part 12 Tapered pile 13 Press heavy machine 14 Leader part 15 Strip | belt-shaped plate spring member 15a Arc-shaped part of a strip-shaped plate spring member 15b Upper end portion 15c of the strip-shaped plate spring member Lower end portion 16 of the strip-shaped plate spring member 16 Cylindrical guide member 17 Connecting ring 18 Coil spring 19 Straight tube portion 23 Support plate 24 Press-fit device

Claims (3)

一端部側から他端部側に向けて外径が縮径したテーパー形状部分を有するテーパー杭を、外径の小さな他端部側を下方に向けて圧入用重機を用いて圧入又は回転圧入することによって地中に設置する際に、テーパー杭が鉛直に打ち込まれるようにガイドするテーパー杭のガイド装置であって、
前記ガイド装置は、テーパー杭を挿通可能な中空内部を有する円筒状ガイド部材と、該円筒状ガイド部材の内側に配置された少なくとも３体の円弧形状部分を有する帯板状板バネ部材とからなり、
前記帯板状板バネ部材は、前記円筒状ガイド部材の周方向に間隔をおいて配置されると共に、前記円弧形状部分を前記円筒状ガイド部材の内周面から内方に突出させた状態で縦方向に延設して配置されており、
且つ前記帯板状板バネ部材は、上端部分を前記円筒状ガイド部材に固定すると共に、下端部分を前記円筒状ガイド部材の内周面に沿って縦方向にスライド移動可能な可動端として取り付けられているテーパー杭のガイド装置。 A taper pile having a tapered portion whose outer diameter is reduced from one end side toward the other end side is press-fitted or rotationally pressed using a press-fitting heavy machine with the other end portion having a smaller outer diameter directed downward. A taper pile guide device for guiding the taper pile to be driven vertically when installed in the ground,
The guide device comprises a cylindrical guide member having a hollow interior through which a tapered pile can be inserted, and a belt-like plate spring member having at least three arcuate portions disposed inside the cylindrical guide member. ,
The strip-shaped plate spring member is disposed with a space in the circumferential direction of the cylindrical guide member, and the arc-shaped portion protrudes inward from the inner peripheral surface of the cylindrical guide member. It is arranged extending in the vertical direction,
The belt-like plate spring member is attached as a movable end capable of slidably moving in the vertical direction along the inner peripheral surface of the cylindrical guide member while fixing the upper end portion to the cylindrical guide member. Tapered pile guide device. 前記帯板状板バネ部材の下端部分を、前記円筒状ガイド部材の内周面に沿ってスライド移動可能な状態で連結一体化する連結リングが設けられている請求項１記載のテーパー杭のガイド装置。   The guide of the taper pile according to claim 1 provided with the connection ring which connects and integrates the lower end part of said strip plate-like leaf spring member in the state where it can slide and move along the inner peripheral surface of said cylindrical guide member. apparatus. 前記帯板状板バネ部材の下方に、前記円筒状ガイド部材の内周面に沿って配置されるコイルバネが設けられており、前記帯板状板バネ部材の下端部分が、前記コイルバネの上端部に係止可能となっている請求項１又は２記載のテーパー杭のガイド装置。   A coil spring disposed along the inner peripheral surface of the cylindrical guide member is provided below the strip plate spring member, and a lower end portion of the strip plate spring member is an upper end portion of the coil spring. The guide apparatus of the taper pile of Claim 1 or 2 which can be latched to.
JP2009200718A 2009-08-31 2009-08-31 Guide device for tapered pile Pending JP2011052408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009200718A JP2011052408A (en) 2009-08-31 2009-08-31 Guide device for tapered pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009200718A JP2011052408A (en) 2009-08-31 2009-08-31 Guide device for tapered pile

Publications (1)

Publication Number Publication Date
JP2011052408A true JP2011052408A (en) 2011-03-17

Family

ID=43941684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009200718A Pending JP2011052408A (en) 2009-08-31 2009-08-31 Guide device for tapered pile

Country Status (1)

Country Link
JP (1) JP2011052408A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629589A (en) * 2018-12-29 2019-04-16 国网山东省电力公司烟台供电公司 A kind of plug-in type prefabricated pile basis
CN112982426A (en) * 2021-02-07 2021-06-18 中铁广州工程局集团深圳工程有限公司 Construction method of underground assembly type station precast pile
CN113668509A (en) * 2021-08-02 2021-11-19 深圳宏业基岩土科技股份有限公司 Concrete pouring construction method for ultra-deep rotary pile capable of preventing guide pipe from clamping cage
CN115094891A (en) * 2022-08-03 2022-09-23 中煤江南建设发展集团有限公司 Efficient variable-length pile feeder with positioning device
CN117190091A (en) * 2023-10-24 2023-12-08 南京佰福激光技术有限公司 Square light spot hand tool and light cone installation and positioning method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629589A (en) * 2018-12-29 2019-04-16 国网山东省电力公司烟台供电公司 A kind of plug-in type prefabricated pile basis
CN109629589B (en) * 2018-12-29 2024-01-16 国网山东省电力公司烟台供电公司 Inserted prefabricated pile foundation
CN112982426A (en) * 2021-02-07 2021-06-18 中铁广州工程局集团深圳工程有限公司 Construction method of underground assembly type station precast pile
CN113668509A (en) * 2021-08-02 2021-11-19 深圳宏业基岩土科技股份有限公司 Concrete pouring construction method for ultra-deep rotary pile capable of preventing guide pipe from clamping cage
CN115094891A (en) * 2022-08-03 2022-09-23 中煤江南建设发展集团有限公司 Efficient variable-length pile feeder with positioning device
CN117190091A (en) * 2023-10-24 2023-12-08 南京佰福激光技术有限公司 Square light spot hand tool and light cone installation and positioning method thereof
CN117190091B (en) * 2023-10-24 2024-01-30 南京佰福激光技术有限公司 Square light spot hand tool and light cone installation and positioning method thereof

Similar Documents

Publication Publication Date Title
JP2011052408A (en) Guide device for tapered pile
JP5490452B2 (en) Anti-blur guide device for taper pile driving
WO2011013636A1 (en) Pipe making machine and pipe making method
DE602008003429D1 (en) SWIVELING EQUIPMENT FOR ONE WAVE IN ONE CLOCK
JP5837212B2 (en) Tilting pad radial bearing with alignment device for single shaft turbomachine
JP2015200410A (en) Inner face material pressing device
JP5789166B2 (en) Concrete pipe inner wall cutting device
JP5498068B2 (en) In-pipe moving device
JP6622476B2 (en) Rehabilitation pipe support member and existing pipe rehabilitation method
JP2014161978A (en) Method for processing end of lining material and diameter extender used for the same
JP6105892B2 (en) Drilling rig
EP2933053B1 (en) Pipe coupler
JP5926661B2 (en) Pipe making equipment
JP2008279528A (en) Wall face processing device for embedded pipe
WO2015166948A1 (en) Tube-making device and tube-making method using same
JP2011084966A (en) Pile bracing apparatus
JP2011196548A (en) Fixing device, fixing method, and driving force generator
JP5814848B2 (en) Pipe making equipment
JP6420598B2 (en) Pipe joint joining device
JP6037975B2 (en) Pipe cutting machine and pipe cutting method
JP2017089883A (en) Stepped shaft assembly
RU2464383C1 (en) Device for trenchless installation of pipelines by means of piercing
CN207874051U (en) Pipeline clamping device
JP2010203869A (en) Shape measuring roll of metal strip
JP4784553B2 (en) Fixed scroll positioning device