JP2017180049A - Casing device - Google Patents

Casing device Download PDF

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JP2017180049A
JP2017180049A JP2016073131A JP2016073131A JP2017180049A JP 2017180049 A JP2017180049 A JP 2017180049A JP 2016073131 A JP2016073131 A JP 2016073131A JP 2016073131 A JP2016073131 A JP 2016073131A JP 2017180049 A JP2017180049 A JP 2017180049A
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casing
fixing member
lid
lid fixing
protrusion
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JP6651399B2 (en
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将馬 津野
Shoma Tsuno
将馬 津野
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Asahi Kasei Construction Materials Corp
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Asahi Kasei Construction Materials Corp
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Abstract

PROBLEM TO BE SOLVED: To further reinforce an engaged state of a cover member on a casing tip.SOLUTION: A casing device 1 includes: a casing 2 having a tip part opening 2a and a base end part opening 2c formed on both ends; a cover fixing member 8 that may be engaged/disengaged to/from the tip part of the casing 2 and may be recovered from the base end part opening 2c of the casing 2 after passing through the casing 2; a cover member 3 engaged/disengaged with/from the tip part of the casing 2 by the cover fixing member 8; a cover engagement groove 21 formed on the casing 2; and an engaging/disengaging protrusion 81 that may be moved forward/backward from the cover fixing member 8 in a radial direction or a direction inclined from the radial direction, the engaging/disengaging protrusion engaging with the groove engagement groove 21 while protruding from the cover fixing member 8, for engaging the cover member 3 to the tip part of the casing 2.SELECTED DRAWING: Figure 11

Description

本発明は、ケーシング装置に関する。さらに詳述すると、本発明は、地盤を掘削するケーシング装置の構造の改良に関する。   The present invention relates to a casing device. More specifically, the present invention relates to an improvement in the structure of a casing device for excavating the ground.

従来、地盤を無排土または低排土で掘削するケーシング装置が利用されている（例えば、特許文献１参照）。ケーシング装置は、例えば、融雪や空調等に使用できる地中熱を採取する採熱管（地中熱交換器）を地中に施工する際の掘削作業などにおいて利用されている。   Conventionally, a casing device for excavating the ground with no soil or low soil has been used (see, for example, Patent Document 1). The casing device is used, for example, in excavation work when a heat collecting pipe (ground heat exchanger) that collects underground heat that can be used for melting snow, air conditioning, or the like is constructed in the ground.

このようなケーシング装置で、より硬い地盤を効率的に掘削するには、正転での掘削に加えて、一時的に逆転での引上げを組み合わせて再掘削をし、地盤をほぐしながら掘削していくことが有効である。   In order to efficiently excavate harder ground with such a casing device, in addition to excavation in forward rotation, re-excavation is temporarily combined with lifting in reverse rotation, and excavation is performed while loosening the ground. It is effective to go.

特開２０１３−１４５０７２号公報JP 2013-145072 A

しかし、従来のケーシング装置は、基本的に押込み方向の力を作用させるのに適した構造となっており、正逆回転問わず一時的な引上げを行うと、ケーシング先端の蓋部材が外れてしまう可能性がある。   However, the conventional casing device basically has a structure suitable for applying a force in the pushing direction, and the lid member at the front end of the casing comes off when it is temporarily pulled up regardless of forward and reverse rotation. there is a possibility.

本発明は上記課題を解決するものであり、その目的とするところは、地盤を無排土または低排土で掘削するケーシング装置であって、ケーシング先端における蓋部材の係合状態をより確実なものとすることができるケーシング装置を提供することにある。   The present invention solves the above-mentioned problems, and an object of the present invention is a casing device for excavating the ground with no soil or low soil, and the engagement state of the lid member at the front end of the casing is more reliable. An object of the present invention is to provide a casing device that can be provided.

かかる課題を解決するべく本発明者が想到するに至った本発明は、地盤掘削用のケーシング装置であって、
両端に形成された先端部開口および基端部開口を有するケーシングと、
前記ケーシングの先端部に係脱可能であり、かつ、前記ケーシングの内側を通過させて当該ケーシングの前記基端部開口から回収可能な蓋固定部材と、
該蓋固定部材によって前記ケーシングの先端部に着脱される蓋部材と、
前記ケーシングに形成された蓋係止用溝部と、
前記蓋固定部材から径方向またはこれと斜めの方向に進退可能であり、前記蓋固定部材から突出した状態で前記蓋係止用溝部に係合して前記蓋部材を前記ケーシングの前記先端部に係止させる着脱用突起と、
を備えることを特徴とする。 The present invention, which has been conceived by the inventor in order to solve such a problem, is a casing device for ground excavation,
A casing having a distal end opening and a proximal end opening formed at both ends;
A lid fixing member that can be engaged with and disengaged from the front end of the casing, and that can be recovered from the base end opening of the casing through the inside of the casing;
A lid member attached to and detached from the front end of the casing by the lid fixing member;
A lid locking groove formed in the casing;
The lid fixing member can be advanced or retracted in a radial direction or an oblique direction with respect to the lid fixing member. A detachable protrusion to be locked,
It is characterized by providing.

蓋固定部材の着脱用突起は、当該蓋固定部材から径方向またはこれと斜めの方向に進退するものであり、掘削途中でケーシングを一時的に引き上げたとしてもこれによって後退することがない。したがって、ケーシングを一時的に引き上げたとしても、ケーシング先端における蓋部材の係合状態を確実に保持し続けることができる。   The attachment / detachment protrusion of the lid fixing member advances or retracts from the lid fixing member in the radial direction or in an oblique direction to the lid fixing member, and even if the casing is temporarily pulled up during excavation, it does not move backward. Therefore, even if the casing is temporarily pulled up, the engagement state of the lid member at the casing front end can be reliably maintained.

また、このケーシング装置によれば、蓋固定部材の着脱用突起を退避させ、ケーシング内側を通過させて、ケーシングの基端部開口から当該蓋固定を回収することができる。   Moreover, according to this casing apparatus, the lid fixing member can be withdrawn from the opening of the base end portion of the casing by retracting the attaching / detaching protrusion of the lid fixing member and passing the inside of the casing.

前記蓋部材は、前記蓋固定部材の着脱用突起が出入りする係止用孔部と、該係止用孔部が形成された係止片と、備えるものであってもよい。   The lid member may be provided with a locking hole portion into which the attaching / detaching protrusion of the lid fixing member enters and exits, and a locking piece formed with the locking hole portion.

また、ケーシング装置は、前記蓋固定部材の鉛直方向上部に形成された、当該蓋固定部材の吊り上げ用の被引上部と、前記着脱用突起を前記蓋固定部材の径方向内側に退避させる連動機構と、をさらに備えていてもよい。   Further, the casing device is formed at the upper part in the vertical direction of the lid fixing member, and the interlocking mechanism for retracting the pulled-up upper part of the lid fixing member and the detachable protrusion to the inner side in the radial direction of the lid fixing member. And may be further provided.

また、前記連動機構が、前記被引上部が上方に引っ張られたとき、または、上方から押込まれた時の動きに連動させて前記着脱用突起を前記蓋固定部材の径方向内側に退避させる機構であってもよい。このケーシング装置によれば、蓋固定部材を引っ張り上げる等の動作のみで、ケーシング先端における蓋部材の係合状態を確実に解除することができる。   Further, the interlock mechanism is a mechanism for retracting the detachable protrusion to the inside in the radial direction of the lid fixing member in conjunction with a movement when the pulled upper part is pulled upward or pushed from above. It may be. According to this casing device, the engagement state of the lid member at the front end of the casing can be reliably released only by an operation such as pulling up the lid fixing member.

前記連動機構が、前記被駆動部と前記着脱用突起を連結する線材を含んでいてもよい。   The interlocking mechanism may include a wire connecting the driven part and the attaching / detaching protrusion.

前記連動機構が、前記被駆動部と前記着脱用突起を連結するリンク部材を含んでいてもよい。   The interlocking mechanism may include a link member that connects the driven portion and the attaching / detaching protrusion.

前記連動機構が、一対の前記着脱用突起と、該一対の着脱用突起の間に配置されてこれら着脱用突起が前記蓋部材の径方向内側に退避することを規制する退避規制部材を含んでいてもよい。   The interlocking mechanism includes a pair of attachment / detachment protrusions and a retraction restricting member that is disposed between the pair of attachment / detachment protrusions and restricts the attachment / detachment protrusions from retreating radially inward of the lid member. May be.

ケーシング装置は、前記ケーシングの基端部開口から前記ケーシングの内側を通過し、前記蓋固定部材を引き上げて回収する蓋固定部材回収機をさらに備えていてもよい。   The casing device may further include a lid fixing member collecting machine that passes through the inside of the casing from the base end opening of the casing and pulls up and collects the lid fixing member.

前記蓋固定部材回収機は、磁力を利用して前記蓋固定部材を引き上げるものであってもよい。   The lid fixing member collecting machine may pull up the lid fixing member using magnetic force.

本発明によれば、ケーシング装置のケーシング先端における蓋部材の係合状態をより確実なものとすることができる。   According to the present invention, the engagement state of the lid member at the casing front end of the casing device can be made more reliable.

ケーシングの構成の一例を示す図である。It is a figure which shows an example of a structure of a casing. ケーシングの先端部付近の構成例を表す（Ａ）側方から見た縦断面図、（Ｂ）底面図である。It is the longitudinal cross-sectional view seen from the side (A) showing the structural example of the front-end | tip part vicinity of a casing, (B) A bottom view. 蓋部材の構成例を表す（Ａ）側面図、（Ｂ）正面から見た縦断面図、（Ｃ）透孔にボルトが通された状態の縦断面図である。It is the (A) side view showing the structural example of a cover member, (B) The longitudinal cross-sectional view seen from the front, (C) The longitudinal cross-sectional view of the state which passed the volt | bolt through the through-hole. ケーシングの先端部付近の縦断面と蓋固定部材とを表す正面図である。It is a front view showing the longitudinal cross-section near the front-end | tip part of a casing, and a cover fixing member. 蓋固定部材と蓋部材とをケーシングの先端部開口に設置した状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is the (A) vertical side view showing the state which installed the lid fixing member and the lid member in the tip part opening of a casing, and (B) bottom view. ボルトを締めて着脱用突起を蓋係止用溝部に係止させた状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is the (A) vertical side view showing the state which tightened the volt | bolt and latched the attachment-and-detachment protrusion in the groove part for lid locking, and (B) the bottom view. ボルトを回して蓋固定部材から取り外した状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is the (A) vertical side view showing the state which turned the volt | bolt and removed from the cover fixing member, (B) A bottom view. 蓋固定部材回収機のマグネットで被引上部を吸着した状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is the (A) vertical side view showing the state which attracted the upper part by the magnet of the lid fixing member recovery machine, and (B) the bottom view. 蓋固定部材回収機を引っ張り上げ、着脱用突起を蓋係止用溝部から退避させた状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is (A) vertical side view and (B) bottom view showing the state which pulled up the lid fixing member collection | recovery machine and retracted the protrusion for attachment / detachment from the groove part for lid latching. 蓋固定部材回収機をさらに引き上げた状態を表す（Ａ）縦側面図、（Ｂ）底面図である。It is the (A) vertical side view showing the state which pulled up the lid fixing member recovery machine further, and (B) bottom view. 蓋固定部材回収機の引き上げ中の状態を表す、ケーシング全体の縦側面図である。It is a vertical side view of the whole casing showing the state in which the lid fixing member collection machine is being pulled up. ケーシング装置を用いた施工時における作業の流れの一例を（Ａ）〜（Ｅ）の順に示す図である。It is a figure which shows an example of the work flow at the time of construction using a casing apparatus in order of (A)-(E). ケーシング装置を用いて採熱管を施工する際の作業の流れの一例を（Ａ）〜（Ｅ）の順に示す図である。It is a figure which shows an example of the flow of an operation | work at the time of constructing a heat collecting pipe using a casing apparatus in order of (A)-(E). 着脱用突起、ワイヤーなどからなる連動機構の第２の構成例を示す（Ａ）底面図、（Ｂ）着脱用突起が蓋係止用溝部に係合した状態のケーシング先端部の縦断面図、（Ｃ）着脱用突起が蓋係止用溝部から外れた状態の縦断面図である。(A) bottom view showing a second configuration example of an interlocking mechanism made up of an attaching / detaching projection, a wire, etc., (B) a longitudinal sectional view of the front end portion of the casing in a state where the attaching / detaching projection is engaged with the lid locking groove portion, (C) It is a longitudinal cross-sectional view of a state in which the attaching / detaching protrusion is detached from the lid locking groove. 着脱用突起、リンク部材などからなる連動機構の第３の構成例を示す（Ａ）底面図、（Ｂ）着脱用突起が蓋係止用溝部に係合した状態のケーシング先端部の縦断面図、（Ｃ）着脱用突起が蓋係止用溝部から外れた状態の縦断面図である。(A) Bottom view showing a third configuration example of an interlocking mechanism including an attaching / detaching protrusion, a link member, and the like, (B) a longitudinal cross-sectional view of a casing front end portion in a state where the attaching / detaching protrusion engages with a lid locking groove portion (C) It is a longitudinal cross-sectional view of the state which the protrusion for attachment / detachment removed from the groove part for lid latching. 着脱用突起、つっぱり部材などからなる連動機構の第４の構成例を示す、（Ａ）着脱用突起が蓋係止用溝部に係合した状態のケーシング先端部の縦断面図、（Ｂ）つっぱり部材を引き上げた状態の縦断面図、（Ｃ）着脱用突起が蓋係止用溝部から外れた状態の縦断面図である。(A) Longitudinal sectional view of the front end of the casing in a state where the attaching / detaching protrusion engages with the lid locking groove, (B) It is the longitudinal cross-sectional view of the state which pulled up the member, (C) The longitudinal cross-sectional view of the state from which the protrusion for attachment / detachment removed from the groove part for lid latching. 押込みによる着脱用突起の係合の外し方の一例を（Ａ）〜（Ｃ）まで順に示す概略図である。It is the schematic which shows in order from (A)-(C) an example of how to disengage the engagement for attachment / detachment by pushing. 押込みによる着脱用突起の係合の外し方の他の例を（Ａ）〜（Ｃ）まで順に示す概略図である。It is the schematic which shows in order from (A)-(C) another example of how to remove the engagement of the attachment / detachment protrusion by pushing. 地中熱を利用する手法の一例である直接循環方式（密閉型）の熱交換装置の概略を表す図である。It is a figure showing the outline of the heat exchange apparatus of the direct circulation system (sealed type) which is an example of the method using geothermal heat. 地中熱を利用する手法の一例であるオープンループ方式（開放型）の熱交換装置の概略を表す図である。It is a figure showing the outline of the heat exchange apparatus of the open loop system (open type) which is an example of the method of using underground heat.

以下、本発明の構成を図面に示す実施の形態の一例に基づいて詳細に説明する。   Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.

図１等に本発明に係るケーシング装置１の実施形態を示す。ケーシング装置１は、ケーシング２を含む装置で、さらに、ケーシング２に着脱可能な蓋部材３、蓋固定部材８等を有している。   FIG. 1 shows an embodiment of a casing device 1 according to the present invention. The casing device 1 includes a casing 2 and further includes a lid member 3 that can be attached to and detached from the casing 2, a lid fixing member 8, and the like.

ケーシング２は、両端に形成された先端部開口２ａおよび基端部開口２ｃを有している（図１１等参照）。ケーシング２の大きさは、当該ケーシング２の埋設後に施工される鋼管杭やコンクリート製既製杭、採熱管３０等の径以上である。また、ケーシング２には、掘削性を上げるため、その先端に掘削爪２ｅを設け、あるいは外周にスパイラル２ｆを設けることができる（図１、図１３等参照）。   The casing 2 has a tip end opening 2a and a base end opening 2c formed at both ends (see FIG. 11 and the like). The size of the casing 2 is equal to or larger than the diameter of a steel pipe pile, a concrete ready-made pile, the heat collection pipe 30 or the like that is constructed after the casing 2 is buried. Further, the casing 2 can be provided with a digging claw 2e at the tip thereof or a spiral 2f on the outer periphery in order to improve excavation performance (see FIGS. 1 and 13).

ケーシング２の内周面には、蓋固定部材８の着脱用突起８１が係脱する蓋係止用溝部２１が設けられている。蓋係止用溝部２１の形状や大きさは、蓋固定部材８の着脱用突起８１が係脱するものである限り、特に限定されない。例えば本実施形態のケーシング装置１の場合は、ケーシング２の本体部２ｂの径方向に貫通する、対向する一対の矩形孔によって蓋係止用溝部２１を構成している。これら一対の矩形孔は、その外側開口を、本体部２ｂの外周に溶接等で取り付けられた湾曲板２２によって塞がれている（図２、図４等参照）。   On the inner peripheral surface of the casing 2, a lid locking groove 21 is provided for engaging and disengaging the projection 81 for attaching and detaching the lid fixing member 8. The shape and size of the lid locking groove 21 are not particularly limited as long as the attachment / detachment protrusion 81 of the lid fixing member 8 is engaged and disengaged. For example, in the case of the casing device 1 of the present embodiment, the lid locking groove 21 is constituted by a pair of opposed rectangular holes that penetrate in the radial direction of the main body 2b of the casing 2. The pair of rectangular holes have their outer openings closed by a curved plate 22 attached to the outer periphery of the main body 2b by welding or the like (see FIGS. 2 and 4).

蓋部材３は、ケーシング２の先端部開口２ａを閉塞する、該ケーシング２に対して着脱可能な部材である。なお、本明細書でいう閉塞とは、(1)ケーシング２の先端部開口２ａが完全に塞がれた状態の他、(2)先端部開口２ａが完全に塞がれているわけではないが蓋部材３がない場合と比べればケーシング２内への土砂の侵入を減少させることができる状態をも含む。   The lid member 3 is a member that closes the front end opening 2 a of the casing 2 and is detachable from the casing 2. In addition, in this specification, the blockage means that (1) the tip end opening 2a of the casing 2 is completely closed, and (2) the tip end opening 2a is not completely closed. This includes a state in which the intrusion of earth and sand into the casing 2 can be reduced as compared with the case where the lid member 3 is not provided.

蓋部材３は、ケーシング２に内接し、ケーシング２の先端部開口２ａを閉塞することができれば、その形状は例えば板状でも円錐状でも構わない。例えば本実施形態の蓋部材３は、円形の板状部材からなる。板状部材は、例えば、２枚の円形板３５が栓溶接されることによって形成される（図３参照）。蓋部材３の中央には、後に詳述するボルト８６のネジ部８６ａが通る透孔３６が設けられている（図４参照）。蓋部材３の側部には、当該蓋部材３とケーシング２の内周面との間に介在するＯリング３８が設けられる（図４参照）。   As long as the lid member 3 is inscribed in the casing 2 and can close the front end opening 2a of the casing 2, the shape may be, for example, a plate shape or a conical shape. For example, the lid member 3 of the present embodiment is a circular plate member. The plate-like member is formed, for example, by plug-welding two circular plates 35 (see FIG. 3). A through hole 36 through which a threaded portion 86a of a bolt 86, which will be described later in detail, passes is provided in the center of the lid member 3 (see FIG. 4). An O-ring 38 interposed between the lid member 3 and the inner peripheral surface of the casing 2 is provided on the side of the lid member 3 (see FIG. 4).

また、蓋部材３は、係止片３１と、係止用孔部３２とを備える（図３参照）。係止用孔部３２は、蓋固定部材８の着脱用突起８１が出入りするように設けられた孔部で、一対の係止片３１のそれぞれに形成されている（図３参照）。係止片３１は、蓋部材３の側部からケーシング２の本体部２ｂに向けて立ち上がる、例えば対向する一対の板状部材によって形成されている（図３参照）。   The lid member 3 includes a locking piece 31 and a locking hole 32 (see FIG. 3). The locking hole 32 is a hole provided so that the attaching / detaching projection 81 of the lid fixing member 8 can enter and exit, and is formed in each of the pair of locking pieces 31 (see FIG. 3). The locking piece 31 is formed by, for example, a pair of opposing plate-like members that rise from the side of the lid member 3 toward the main body 2b of the casing 2 (see FIG. 3).

また、本実施形態では、ケーシング２の先端側の内周面をその他の部分よりも大径の面として段付き状としている（図４等参照）。この段部には、Ｏリング３８付きの蓋部材３が収容される（図５等参照）。   Moreover, in this embodiment, the inner peripheral surface of the front end side of the casing 2 has a stepped shape with a larger diameter than other portions (see FIG. 4 and the like). In this step portion, the lid member 3 with an O-ring 38 is accommodated (see FIG. 5 and the like).

蓋固定部材８は、蓋部材３をケーシング２の先端部に着脱等する際に用いられる部材である。この蓋固定部材８は、着脱用突起８１、連動機構８２、被引上部（被駆動部）８８などを備える（図４等参照）。   The lid fixing member 8 is a member that is used when the lid member 3 is attached to and detached from the distal end portion of the casing 2. The lid fixing member 8 includes an attaching / detaching protrusion 81, an interlocking mechanism 82, a pulled upper portion (driven portion) 88, and the like (see FIG. 4 and the like).

着脱用突起８１は、蓋固定部材８の台座８３上において径方向に進退可能であり、該蓋固定部材８から突出した状態で蓋係止用溝部２１に係合して蓋部材３をケーシング２の先端部に係止させる突起である（図２参照）。本実施形態では、対向する一対の蓋係止用溝部２１の配置に合わせて一対の着脱用突起８１を１８０度おきに配置しているが（図５（Ｂ）等参照）、もちろんこれ以外の構成であっても構わない。着脱用突起８１が蓋固定部材８の径方向内側に向けて退避すると、ケーシング２の先端部における係止状態が解除され、蓋部材３が脱落可能、かつ、蓋固定部材８を引き上げることが可能な状態となる（図９等参照）。   The attaching / detaching projection 81 can advance and retreat in the radial direction on the base 83 of the lid fixing member 8, and engages with the lid locking groove portion 21 in a state of protruding from the lid fixing member 8 so that the lid member 3 is moved to the casing 2. It is a protrusion latched by the front-end | tip part (refer FIG. 2). In the present embodiment, a pair of attachment / detachment projections 81 are arranged every 180 degrees in accordance with the arrangement of the pair of opposed lid locking groove portions 21 (see FIG. 5B, for example). It may be a configuration. When the attaching / detaching protrusion 81 is retracted toward the inside in the radial direction of the lid fixing member 8, the locked state at the distal end portion of the casing 2 is released, the lid member 3 can be dropped, and the lid fixing member 8 can be pulled up. (See FIG. 9 and the like).

なお、本実施形態では径方向に進退する着脱用突起８１について説明しているがこれは好適な一例にすぎず、着脱用突起８１は、径方向と斜めの方向に進退するものであってもよい。要は、進退することによって蓋部材３および蓋固定部材８をケーシング２の先端部に係止させるものであれば、着脱用突起８１は径方向に真っ直ぐ進退するものに限られない。   In the present embodiment, the detachable protrusion 81 that advances and retreats in the radial direction is described. However, this is only a preferable example, and the attachment and detachment protrusion 81 may advance and retreat in the radial and oblique directions. Good. In short, as long as the lid member 3 and the lid fixing member 8 are locked to the front end portion of the casing 2 by moving forward and backward, the attaching / detaching protrusion 81 is not limited to the one that advances and retracts straight in the radial direction.

被引上部８８は、蓋固定部材８を引き上げて回収する際に利用される部材であり、当該蓋固定部材８の上部に形成されている。ここで一例を示しておくと、被引上部８８は、マグネット４１を備えた蓋固定部材回収機４０の磁力によって吸着される金属製の部材である（図８等参照）。なお、マグネットを被引上部８８側に設けた構成としてもよい。   The pulled upper portion 88 is a member used when the lid fixing member 8 is pulled up and collected, and is formed on the upper portion of the lid fixing member 8. Here, as an example, the pulled upper portion 88 is a metal member that is attracted by the magnetic force of the lid fixing member collecting machine 40 including the magnet 41 (see FIG. 8 and the like). The magnet may be provided on the pulled upper portion 88 side.

連動機構８２は、被引上部８８が上方に引っ張られたときの動きに連動させて着脱用突起８１を蓋固定部材８の径方向内側に退避させる機構である。以下、本実施形態の連動機構８２について説明する（図４、図９等参照）。本実施形態では、被引上部８８と着脱用突起８１とをリンク部材８５で連結している。   The interlocking mechanism 82 is a mechanism for retracting the attaching / detaching protrusion 81 to the inside of the lid fixing member 8 in the radial direction in conjunction with the movement when the pulled upper portion 88 is pulled upward. Hereinafter, the interlocking mechanism 82 of the present embodiment will be described (see FIGS. 4 and 9). In the present embodiment, the pulled upper portion 88 and the attaching / detaching protrusion 81 are connected by the link member 85.

一対のリンク部材８５は、それぞれが着脱用突起８１とピン結合されており、尚かつ、一対のリンク部材２５どうしもケーシング２の略中央で被引上部８８とピン結合されている（図４等参照）。被引上部８８が上方に引っ張られるとリンク部材８５を介して着脱用突起８１が径方向内側に引っ張られてスライドしながら退避する（図８、図９等参照）。   Each of the pair of link members 85 is pin-coupled to the attaching / detaching projection 81, and the pair of link members 25 are pin-coupled to the to-be-drawn upper portion 88 at the approximate center of the casing 2 (FIG. 4 and the like). reference). When the pulled upper portion 88 is pulled upward, the attaching / detaching protrusion 81 is pulled inward in the radial direction via the link member 85 and retracted while sliding (see FIGS. 8 and 9).

また、連動機構８２は、着脱用突起８１を径方向外側に摺動（移動）させる機構としても機能する。例えば本実施形態では、蓋部材３の透孔３６に下方から挿通したボルト８６のネジ部８６ａを、蓋固定部材８の被引上部８８の底面に形成された雌ネジ部８８ａに螺合させる構成の機構としている（図４等参照）。この連動機構８２によれば、ボルト８６を締めることによって被引上部８８が引き下げられ、リンク部材８５を介して着脱用突起８１が径方向外側に摺動する（図５、図６等参照）。   The interlocking mechanism 82 also functions as a mechanism that slides (moves) the attaching / detaching protrusion 81 radially outward. For example, in the present embodiment, the screw portion 86 a of the bolt 86 inserted from below into the through hole 36 of the lid member 3 is screwed into the female screw portion 88 a formed on the bottom surface of the pulled upper portion 88 of the lid fixing member 8. (See FIG. 4 and the like). According to this interlocking mechanism 82, the to-be-drawn upper part 88 is pulled down by tightening the bolt 86, and the attaching / detaching protrusion 81 slides radially outward via the link member 85 (see FIGS. 5 and 6).

なお、上述した連動機構８２は好適な一例にすぎない。以下、連動機構８２のその他の具体例を示しておく（図１４等参照）。   The interlocking mechanism 82 described above is only a suitable example. Hereinafter, other specific examples of the interlocking mechanism 82 will be described (see FIG. 14 and the like).

連動機構８２の別例（第２の具体例）を示す（図１４参照）。ここでは、被引上部８８と着脱用突起８１とを線材で直接または間接的に連結している。線材の具体例としてはワイヤー８７を挙げることができるが、その他、チェーン、ケーブル、ナイロンスリングといった種々の連結用部材を用いることができる。   Another example (second specific example) of the interlocking mechanism 82 is shown (see FIG. 14). Here, the to-be-drawn upper part 88 and the attaching / detaching protrusion 81 are directly or indirectly connected by a wire. Specific examples of the wire include a wire 87, but various other connecting members such as a chain, a cable, and a nylon sling can be used.

ワイヤー８７は、着脱用突起８１の一部（好適な一例として、径方向内側の部位）と被引上部８８との間に設けられ、両者を直接または間接的に結んでいる（図１４（Ｂ）参照）。被引上部８８が上方に引っ張られると、着脱用突起８１は、ワイヤー８７を介して径方向内側に引っ張られて退避する（図１４（Ａ）参照）。   The wire 87 is provided between a part of the attaching / detaching protrusion 81 (as a preferred example, a radially inner portion) and the drawn upper portion 88 and directly or indirectly connects them (FIG. 14B). )reference). When the pulled upper portion 88 is pulled upward, the attaching / detaching protrusion 81 is pulled radially inward via the wire 87 and retracted (see FIG. 14A).

なお、図１４等に示す形態においては、着脱用突起８１にクランク形状のリンク部材８５をピン結合し、該リンク部材８５にワイヤー８７を締結している被引上部８８が上方に引っ張られると、ワイヤー８７に引っ張られたリンク部材８５は、ピン結合された点を中心に回転しながら着脱用突起８１を退避させる。   In the form shown in FIG. 14 and the like, when the crank-shaped link member 85 is pin-coupled to the attaching / detaching protrusion 81 and the pulled upper portion 88 that fastens the wire 87 to the link member 85 is pulled upward, The link member 85 pulled by the wire 87 retracts the attaching / detaching protrusion 81 while rotating around the pin-coupled point.

連動機構８２の第３の具体例を示す（図１５参照）。ここでは、被引上部８８と着脱用突起８１とをリンク部材８５，８９で連結している。   A third specific example of the interlocking mechanism 82 is shown (see FIG. 15). Here, the to-be-drawn upper part 88 and the attaching / detaching protrusion 81 are connected by the link members 85 and 89.

一対のリンク部材８５は、それぞれが着脱用突起８１とピン結合されており、尚かつ、一対のリンク部材８５どうしもケーシング２の略中央で被引上部８８に接続されたリンク部材８９とピン結合されている（図１５（Ａ）、（Ｂ）参照）。被引上部８８が上方に引っ張られるとリンク部材８５を介して着脱用突起８１が径方向内側に引っ張られてスライドしながら退避する（図１５（Ｃ）参照）。   Each of the pair of link members 85 is pin-coupled to the attaching / detaching projection 81, and the pair of link members 85 are pin-coupled to the link member 89 connected to the pulled upper portion 88 at the approximate center of the casing 2. (See FIGS. 15A and 15B). When the pulled upper portion 88 is pulled upward, the attaching / detaching protrusion 81 is pulled radially inward via the link member 85 and retracted while sliding (see FIG. 15C).

連動機構８２の第４の具体例を示す（図１６参照）。なお、図１６では、ケーシング２について断面のみを表し、蓋部材３等についても概略を示している。ここでは、着脱用突起８１と着脱用突起８１の間につっぱり部材（退避規制部材）９０を設け、係合状態として、着脱用突起８１が内側に意図せず退避することを防いでいる（図１６（Ａ）参照）。ケーシング２の埋設作業の完了後には、つっぱり部材９０を引き上げて係合状態を解除する（図１６（Ｂ）参照）。そうすると、重量バランスより自然に、あるいは弾力等で内側へ付勢する部材（図示省略）の作用により、着脱用突起８１が内側に外れる（図１６（Ｃ）参照）。なお、着脱用突起８１とつっぱり部材９０とをワイヤー等で繋いでいてもよい。   A fourth specific example of the interlocking mechanism 82 is shown (see FIG. 16). In FIG. 16, only the cross section of the casing 2 is shown, and the lid member 3 and the like are also schematically shown. Here, a pulling member (retraction regulating member) 90 is provided between the attaching / detaching protrusion 81 and the attaching / detaching protrusion 81 to prevent the attaching / detaching protrusion 81 from unintentionally retracting in the engaged state (FIG. 16 (A)). After the burying operation of the casing 2 is completed, the pulling member 90 is pulled up to release the engaged state (see FIG. 16B). Then, the attaching / detaching protrusion 81 is disengaged inward due to the action of a member (not shown) that is urged inwardly by elasticity or the like more naturally than the weight balance (see FIG. 16C). The attaching / detaching protrusion 81 and the pulling member 90 may be connected by a wire or the like.

次に、本実施形態のケーシング装置１を用いた施工時における作業の流れの一例を（図１２参照）、蓋固定部材８、蓋部材３の着脱の様子（図４等参照）とともに説明する。   Next, an example of a work flow during construction using the casing device 1 of the present embodiment (see FIG. 12) will be described together with how the lid fixing member 8 and the lid member 3 are attached and detached (see FIG. 4 and the like).

ケーシング２の先端部開口２ａに蓋固定部材８を使って蓋部材３を取り付ける（図４等参照）。まず、ケーシング２の先端部開口２ａに、着脱用突起８１が径方向内側に退避した状態の蓋固定部材８と、蓋部材３とを設置する。このとき、着脱用突起８１と、蓋部材３の係止片３１に形成された係止用孔部３２と、ケーシング２の内周面の蓋係止用溝部２１とが直線状に並ぶよう、各部材の位置を合わせる（図５参照）。   The lid member 3 is attached to the front end opening 2a of the casing 2 using the lid fixing member 8 (see FIG. 4 and the like). First, the lid fixing member 8 and the lid member 3 in a state in which the attaching / detaching projection 81 is retracted radially inward are installed in the front end opening 2 a of the casing 2. At this time, the attaching / detaching projection 81, the locking hole 32 formed in the locking piece 31 of the lid member 3, and the lid locking groove 21 on the inner peripheral surface of the casing 2 are arranged in a straight line. The position of each member is adjusted (see FIG. 5).

また、蓋部材３の透孔３６にボルト８６のネジ部８６ａを底側（先端側）から挿入し、該ネジ部８６ａを雌ネジ部８８ａに螺合させ、ボルト８６を底側（先端側）へと引っ張る（図６参照）。この動作に伴い、リンク部材８５を介して着脱用突起８１が径方向外側へ摺動し、係止用孔部３２を通って、蓋係止用溝部２１に嵌まり込む。これにより、蓋部材３が、係止片３１や着脱用突起８１を介してケーシング２に取り付けられた状態となる。この後、ボルト８６を回して蓋固定部材８から取り外して、蓋部材３の取り付け作業が完了する（図７参照）。   Further, the screw portion 86a of the bolt 86 is inserted into the through hole 36 of the lid member 3 from the bottom side (tip side), the screw portion 86a is screwed into the female screw portion 88a, and the bolt 86 is bottom side (tip side). (See FIG. 6). Along with this operation, the attaching / detaching protrusion 81 slides radially outward via the link member 85 and fits into the lid engaging groove portion 21 through the engaging hole portion 32. Accordingly, the lid member 3 is attached to the casing 2 via the locking piece 31 and the attaching / detaching protrusion 81. Thereafter, the bolt 86 is turned and removed from the lid fixing member 8 to complete the mounting operation of the lid member 3 (see FIG. 7).

上述のごとく蓋部材３が取り付けられたケーシング装置１で地盤を掘削する（図１２（Ａ）参照）。掘削終了後、ケーシング２を逆回転させて所定量（一例として０．５ｍ）引き上げ、蓋部材３を落とすための蓋落ちスペースを形成する（図１２（Ｂ）参照）。   The ground is excavated with the casing device 1 to which the lid member 3 is attached as described above (see FIG. 12A). After the excavation is completed, the casing 2 is reversely rotated and pulled up by a predetermined amount (as an example, 0.5 m) to form a lid drop space for dropping the lid member 3 (see FIG. 12B).

続いて、蓋固定部材回収機４０を用いて蓋固定部材８を取り外す。本実施形態では、底部にマグネット４１を備え、ワイヤー４２で吊るされた蓋固定部材回収機４０をケーシング２の基端部開口２ｃから本体部２ｂ内に降ろし、マグネット４１の磁力で被引上部８８を吸着して蓋固定部材８を引き上げる（図１２（Ｃ）参照）。このような蓋固定部材回収機４０によると、従来装置のごとく操作ロッドを順次継ぎ足すといった手間が不要であり、作業が比較的簡便なものとなる。   Subsequently, the lid fixing member 8 is removed using the lid fixing member recovery machine 40. In the present embodiment, the lid 41 is recovered from the base end opening 2c of the casing 2 into the main body 2b by providing the magnet 41 at the bottom and suspended by the wire 42. And the lid fixing member 8 is pulled up (see FIG. 12C). According to such a lid fixing member collecting machine 40, the operation of sequentially adding the operation rods as in the conventional apparatus is unnecessary, and the operation becomes relatively simple.

ここで、蓋固定部材８を回収する際における、蓋部材３の取り外し動作について説明する（図８等参照）。   Here, the removal operation | movement of the cover member 3 at the time of collect | recovering the cover fixing member 8 is demonstrated (refer FIG. 8 etc.).

蓋固定部材回収機４０のマグネット４１で被引上部８８を吸着した状態で（図８参照）、蓋固定部材回収機４０を引っ張り上げる。そうすると、被引上部８８が引き上げられ、リンク部材８５を介して着脱用突起８１が径方向外側へ摺動して、蓋係止用溝部２１から退避し、さらに、係止片３１の係止用孔部３２からも退避する（図９参照）。これにより、ケーシング２に取り付けられていた蓋部材３が取り外し可能となる。   The lid fixing member collecting machine 40 is pulled up in a state where the pulled upper portion 88 is attracted by the magnet 41 of the lid fixing member collecting machine 40 (see FIG. 8). Then, the pulled upper portion 88 is pulled up, the attaching / detaching protrusion 81 slides radially outward via the link member 85, retreats from the lid locking groove portion 21, and further, the locking piece 31 is locked. It also retracts from the hole 32 (see FIG. 9). Thereby, the lid member 3 attached to the casing 2 can be removed.

蓋固定部材回収機４０をさらに引き上げると、蓋固定部材８のみが引き上げられ、蓋部材３はケーシング２の先端部開口２ａに残留する（図１０参照）。蓋固定部材８は、そのままケーシング２の基端部開口２ｃまで引き上げられ、地表で回収される（図１２（Ｃ）参照）。   When the lid fixing member collecting machine 40 is further lifted, only the lid fixing member 8 is lifted, and the lid member 3 remains in the front end opening 2a of the casing 2 (see FIG. 10). The lid fixing member 8 is pulled up to the base end opening 2c of the casing 2 as it is, and collected on the ground surface (see FIG. 12C).

続いて、ケーシング２内に水を注入する（図１２（Ｄ）参照）。また、本実施形態では、ケーシング２内に深度計測器４４を設置しておく。ケーシング２に水を注入すると、水圧により蓋部材３がケーシング２の先端部開口２ａから外れ、蓋落ちスペースへと降下する（図１２（Ｅ）参照）。蓋部材３がケーシング２の先端部開口２ａから外れて降下したことは、蓋部材３とともに降下する深度計測器４４で計測される深度が変化することから検出することができる。   Subsequently, water is injected into the casing 2 (see FIG. 12D). In the present embodiment, a depth measuring device 44 is installed in the casing 2. When water is poured into the casing 2, the lid member 3 is detached from the front end opening 2 a of the casing 2 by water pressure and descends into a lid drop space (see FIG. 12E). The fact that the lid member 3 has fallen off the tip end opening 2a of the casing 2 can be detected because the depth measured by the depth measuring device 44 that descends together with the lid member 3 changes.

ケーシング装置１を用いて掘削した孔には、例えば、地中熱を地中から採取する採熱管（地中熱交換器）を設置することができる。すなわち、上述のごとくケーシング装置１を用いて地盤を掘削し（スパイラル鋼管による乾式掘削を行い）、蓋部材３を降下させた後（図１３（Ａ）、（Ｂ）参照）、当該掘削孔に採熱管（Ｕチューブ）３０と充填材（一例として、硅砂）を投入し（図１３（Ｃ）参照）、ケーシング２を逆回転させて地盤から引き上げる（図１３（Ｄ）参照）。引上げと充填材投入は交互に繰り返されてもよいし、同時に行われてもよい（図１３（Ｅ）参照）。   In the hole excavated using the casing device 1, for example, a heat collecting pipe (ground heat exchanger) that collects ground heat from the ground can be installed. That is, as described above, the ground is excavated using the casing device 1 (dry excavation using a spiral steel pipe is performed), and the lid member 3 is lowered (see FIGS. 13A and 13B). A heat collection tube (U tube) 30 and a filler (for example, cinnabar sand) are charged (see FIG. 13C), and the casing 2 is reversely rotated and pulled up from the ground (see FIG. 13D). The pulling up and the filling material charging may be repeated alternately or simultaneously (see FIG. 13E).

以上の如く、本実施形態に係るケーシング装置１によれば、先端部開口２ａに蓋部材３を取り付けた状態（先端閉塞状態）でケーシング２を地盤に回転圧入あるいは圧入させることで、無排土または低排土で当該ケーシング２を所定位置まで埋設することができる。また、この際、ケーシング内部に土が混入しないため、ケーシング２の内部が汚れにくい。   As described above, according to the casing device 1 according to this embodiment, the casing 2 is rotationally press-fitted or press-fitted into the ground with the lid member 3 attached to the tip end opening 2a (tip closed state). Alternatively, the casing 2 can be buried up to a predetermined position with low soil discharge. At this time, since the soil does not mix inside the casing, the inside of the casing 2 is hardly contaminated.

また、より硬い地盤を効率的に掘削するには、ケーシング２を正回転させての掘削に加えて、一時的に逆回転させて引上げ動作を組み合わせながら再掘削をし、地盤をほぐしながら掘削していくことが有効であるところ、本実施形態のケーシング装置１によれば、引上げの際に蓋部材３が外れるおそれがないため、引上げ動作を適宜組み合わせて効率的に掘削することができる。   In order to excavate harder ground more efficiently, in addition to excavation by rotating the casing 2 in the forward direction, the excavation is performed by reversing temporarily by combining the pulling action and excavating while loosening the ground. However, according to the casing device 1 of the present embodiment, there is no possibility that the lid member 3 will come off at the time of pulling, and therefore it is possible to excavate efficiently by appropriately combining the pulling operations.

また、本実施形態のケーシング装置１によれば、蓋固定部材８を利用して蓋部材３を着脱可能とするのみならず、掘削後、蓋固定部材８を回収するので、地盤掘削の度に当該蓋固定部材８を再利用することができる。   Further, according to the casing device 1 of the present embodiment, not only the lid fixing member 8 can be attached and detached using the lid fixing member 8, but also the lid fixing member 8 is collected after excavation. The lid fixing member 8 can be reused.

また、本実施形態のケーシング装置１によれば、中空状態のケーシング２の内部で蓋固定部材回収機４０、連動機構８２を利用して蓋部材３を安定して取り外すことが出来る。   Further, according to the casing device 1 of the present embodiment, the lid member 3 can be stably removed using the lid fixing member collecting machine 40 and the interlocking mechanism 82 inside the hollow casing 2.

また、本実施形態のケーシング装置１によれば、操作ロッド等が不要であり、掘削後に蓋固定部材回収機４０を降下させることで蓋部材３の係止状態を解除することが可能であり、作業が簡便である。   Moreover, according to the casing apparatus 1 of this embodiment, an operation rod etc. are unnecessary and it is possible to cancel | release the latching state of the cover member 3 by dropping the cover fixing member collection machine 40 after excavation, Work is simple.

さらに、被引上部８８と連動機構８２とを備える本実施形態のケーシング装置１によれば、蓋固定部材８を引っ張り上げる動作のみでケーシング２の先端での蓋部材３の取付状態を確実に解除することができる。このように、取付状態を解除した後は蓋固定部材回収機４０をそのまま引き上げるだけなので施工の効率に優れる。また、蓋固定部材８を回収する際は、上述のように引き抜く他、押込みによることも可能である。   Further, according to the casing device 1 of the present embodiment including the pulled upper portion 88 and the interlocking mechanism 82, the attachment state of the lid member 3 at the tip of the casing 2 can be reliably released only by pulling up the lid fixing member 8. can do. As described above, after the attached state is released, the lid fixing member collecting machine 40 is simply lifted as it is, so that the construction efficiency is excellent. Further, when the lid fixing member 8 is recovered, it can be pulled out as well as being pushed out as described above.

しかも、蓋固定部材回収機４０によれば以下のごとき利点もある。すなわち、従来のように先端シューを回収するタイプのものはせいぜい１０ｍ程の掘削で使う場合に使用されており、シューを回収することを想定していることから、高度な止水性能は求められていない（例えば、Ｏリングをシューに設けると回収しにくくなってしまう）のに対し、本実施形態のケーシング装置１においては２０ｍ以上の比較的深い地盤を掘削するため、蓋部材３に作用する土圧や地下水圧が大きく、蓋部材３や係止片３１が破損しないように、蓋部材３からの押し力をケーシング２側へ伝えるために、ケーシング２先端の段部に蓋部材３を嵌め込み、かつ、隙間から水が入り込まないように蓋部材３にＯリング３８を設けたものとしている。つまり、蓋部材３と蓋固定部材８とで役割を分散させることで、回収の作業性、蓋部材３や係止片３１等の破損防止の構造上の問題、また止水という問題を解消するような構造としている。   In addition, the lid fixing member collecting machine 40 has the following advantages. In other words, the conventional type that collects the tip shoe is used when excavating at most about 10 m, and since it is assumed that the shoe is collected, a high level of water stopping performance is required. In contrast, the casing device 1 according to the present embodiment excavates a relatively deep ground of 20 m or more, so that it acts on the lid member 3. In order to transmit the pressing force from the lid member 3 to the casing 2 side so that the earth pressure and the groundwater pressure are large and the lid member 3 and the locking piece 31 are not damaged, the lid member 3 is fitted into the step portion at the tip of the casing 2. The lid member 3 is provided with an O-ring 38 so that water does not enter through the gap. In other words, the roles of the lid member 3 and the lid fixing member 8 are distributed to solve the recovery workability, the structural problem of preventing damage to the lid member 3 and the locking piece 31, and the problem of water stoppage. It has a structure like this.

ここで、押込みによる係合の外し方、回収の例としては次のようなものを挙げることができる。すなわち、リンク部材８５，８６を用いたリンク式の連動機構８２の場合、リンク部材８５，８９を上方に引っ張り上げることで係合を外してそのまま引き上げることが可能であるが（図１５参照）、押込み方式の場合にはリンク部材８５，８９をこれとは逆向きに（つまり逆方向に動くように）設置し、被引上部８８に相当ないしは対応する部材を例えば棒などの押込み部材６０で押し込むことで係合が外れるような構造とすることができる（図１７（Ａ），（Ｂ）参照）。この場合、蓋固定部材８の引上げは、ワイヤー７０等の先端のフック７１を引っ掛けて行うことができる（図１７（Ｃ）参照）。あるいは、つっぱり部材９０で着脱用突起８１を係合状態としておき（図１８（Ａ）参照）、棒などの押込み部材６０で押し込むとつっぱり部材９０が外れて落下し（図１８（Ｂ）参照）、これに従って着脱用突起８１の係合状態が解除されるようにした構造とすることもできる（図１８（Ｃ）参照）。   Here, the following can be mentioned as an example of how to disengage and collect by pushing. That is, in the case of the link-type interlocking mechanism 82 using the link members 85 and 86, the link members 85 and 89 can be pulled up to be disengaged and pulled up as they are (see FIG. 15). In the case of the pushing method, the link members 85 and 89 are installed in the opposite direction (that is, so as to move in the opposite direction), and the member corresponding to or corresponding to the pulled upper portion 88 is pushed in by the pushing member 60 such as a rod. Thus, the structure can be disengaged (see FIGS. 17A and 17B). In this case, the lid fixing member 8 can be pulled up by hooking a hook 71 at the tip such as the wire 70 (see FIG. 17C). Alternatively, the attaching / detaching protrusion 81 is brought into an engaged state by the pulling member 90 (see FIG. 18A), and when the pushing member 60 such as a bar is pushed in, the pulling member 90 comes off and falls (see FIG. 18B). According to this, the engagement state of the attaching / detaching protrusion 81 can be released (see FIG. 18C).

なお、上述した引っ張りや押込みによる係合の外し方は好例にすぎない。すなわち、引っ張りや押込みといった直線的な運動を径方向の運動に変更して着脱用突起８１を退避させるほか、例えば、ケーシング２の長軸上で棒状部材を回転させ、ねじ対偶でこの運動を変換して着脱用突起８１を径方向内側に引き込み、あるいは、斜面を利用して規制状態の着脱用突起８１を解除して径方向への移動を可能な状態にする、等によって着脱用突起８１を退避させるようにしてもよい。   Note that the above-described disengagement by pulling or pushing is merely a good example. That is, the linear motion such as pulling or pushing is changed to a radial motion to retract the attaching / detaching projection 81, and, for example, the rod-shaped member is rotated on the long axis of the casing 2 and this motion is converted by a screw pair. The detachable protrusion 81 is pulled inward in the radial direction, or the detachable protrusion 81 in the restricted state is released using a slope to make the detachable protrusion 81 movable in the radial direction. You may make it evacuate.

なお、上述の実施形態は本発明の好適な実施の一例ではあるがこれに限定されるものではなく本発明の要旨を逸脱しない範囲において種々変形実施可能である。例えば、上述した実施形態ではケーシング装置１を利用して掘削した孔に採熱管３０を埋設する形態を例示したが、地中熱を利用する手法にはこの他、水を直接採取する手法がある。参考までに説明を加えておくと、片方の井戸から水を組み上げてその水を熱交換に使うという熱交換手法があり、直接循環方式（密閉型（不凍液、水を循環する方式）、図１９参照）やオープンループ方式（開放型（地下水を汲み上げて熱交換を行い還元井に戻す方式）、図２０参照）と呼ばれている。   The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the form in which the heat collecting pipe 30 is embedded in the hole excavated by using the casing device 1 is exemplified. However, in addition to the technique using the underground heat, there is a technique of directly collecting water. . For reference, there is a heat exchange method in which water is assembled from one well and the water is used for heat exchange. A direct circulation method (sealed type (method for circulating antifreeze liquid and water)), Fig. 19 And an open loop system (an open type (a system in which groundwater is pumped and heat exchange is performed and returned to the reduction well), see FIG. 20).

あるいは、ケーシング装置１を利用して掘削した孔を、処分場の安定化に用いる通気パイプ埋設用に利用することもできる（特許第４８８３６４５号公報等参照）。   Or the hole excavated using the casing apparatus 1 can also be utilized for the ventilation pipe embedding used for stabilization of a disposal site (refer patent 4883645 etc.).

本発明は、地盤を無排土または低排土で掘削するためのケーシング装置として好適である。   The present invention is suitable as a casing device for excavating the ground with no or low soil removal.

１ ケーシング装置
２ ケーシング
２ａ ケーシングの先端部開口
２ｂ ケーシングの本体部
２ｃ ケーシングの基端部開口
３ 蓋部材
８ 蓋固定部材
２１ 蓋係止用溝部
３１ 係止片
３２ 係止用孔部
４０ 蓋固定部材回収機
４１ マグネット
８１ 着脱用突起
８２ 連動機構
８８ 被引上部（被駆動部） DESCRIPTION OF SYMBOLS 1 Casing apparatus 2 Casing 2a Casing front-end | tip part opening 2b Casing main-body part 2c Casing base end part opening 3 Lid member 8 Lid fixing member 21 Lid locking groove 31 Locking piece 32 Locking hole 40 Lid fixing member Recovery machine 41 Magnet 81 Detachment projection 82 Interlocking mechanism 88 Pulled upper part (driven part)

Claims (9)

地盤掘削用のケーシング装置であって、
両端に形成された先端部開口および基端部開口を有するケーシングと、
前記ケーシングの先端部に係脱可能であり、かつ、前記ケーシングの内側を通過させて当該ケーシングの前記基端部開口から回収可能な蓋固定部材と、
該蓋固定部材によって前記ケーシングの先端部に着脱される蓋部材と、
前記ケーシングに形成された蓋係止用溝部と、
前記蓋固定部材から径方向またはこれと斜めの方向に進退可能であり、前記蓋固定部材から突出した状態で前記蓋係止用溝部に係合して前記蓋部材を前記ケーシングの前記先端部に係止させる着脱用突起と、
を備えることを特徴とするケーシング装置。 A casing device for ground excavation,
A casing having a distal end opening and a proximal end opening formed at both ends;
A lid fixing member that can be engaged with and disengaged from the front end of the casing, and that can be recovered from the base end opening of the casing through the inside of the casing;
A lid member attached to and detached from the front end of the casing by the lid fixing member;
A lid locking groove formed in the casing;
The lid fixing member can be advanced or retracted in a radial direction or an oblique direction from the lid fixing member, and is engaged with the lid locking groove in a state of protruding from the lid fixing member, so that the lid member is brought into contact with the front end portion of the casing. A detachable protrusion to be locked,
A casing device comprising: 前記蓋部材は、前記蓋固定部材の着脱用突起が出入りする係止用孔部と、該係止用孔部が形成された係止片と、備えることを特徴とする、請求項１に記載のケーシング装置。   The said cover member is provided with the hole for a lock | rock in which the protrusion for attachment / detachment of the said cover fixing member goes in and out, and the locking piece in which this hole for a lock | rock was formed, It is characterized by the above-mentioned. Casing equipment. 前記蓋固定部材の鉛直方向上部に形成された、当該蓋固定部材の引き上げ用の被駆動部と、
前記着脱用突起を前記蓋固定部材の径方向内側に退避させる連動機構と、
をさらに備えることを特徴とする請求項１または２に記載のケーシング装置。 A driven part for raising the lid fixing member formed on the upper part of the lid fixing member in the vertical direction;
An interlocking mechanism for retracting the detachable protrusion to the inside in the radial direction of the lid fixing member;
The casing device according to claim 1, further comprising: 前記連動機構が、前記被駆動部が上方に引っ張られたとき、または、上方から押込まれた時の動きに連動させて前記着脱用突起を前記蓋固定部材の径方向内側に退避させる機構であることを特徴とする請求項３に記載のケーシング装置。   The interlocking mechanism is a mechanism for retracting the attaching / detaching protrusion to the inside in the radial direction of the lid fixing member in conjunction with a movement when the driven portion is pulled upward or pushed from above. The casing device according to claim 3. 前記連動機構が、前記被駆動部と前記着脱用突起を連結する線材を含むことを特徴とする請求項３または４に記載のケーシング装置。   5. The casing device according to claim 3, wherein the interlocking mechanism includes a wire rod that connects the driven portion and the attachment / detachment protrusion. 6. 前記連動機構が、前記被駆動部と前記着脱用突起を連結するリンク部材を含むことを特徴とする請求項３または４に記載のケーシング装置。   The casing device according to claim 3, wherein the interlocking mechanism includes a link member that connects the driven portion and the attaching / detaching protrusion. 前記連動機構が、一対の前記着脱用突起と、該一対の着脱用突起の間に配置されてこれら着脱用突起が前記蓋部材の径方向内側に退避することを規制する退避規制部材を含むことを特徴とする請求項１から６のいずれか一項に記載のケーシング装置。   The interlocking mechanism includes a pair of attachment / detachment protrusions and a retraction restricting member that is disposed between the pair of attachment / detachment protrusions and restricts the attachment / detachment protrusions from retreating radially inward of the lid member. The casing device according to any one of claims 1 to 6, wherein: 前記ケーシングの基端部開口から前記ケーシングの内側を通過し、前記蓋固定部材を引き上げて回収する蓋固定部材回収機をさらに備えることを特徴とする請求項１から７のいずれか一項に記載のケーシング装置。   8. The lid fixing member collecting machine according to claim 1, further comprising a lid fixing member collecting machine that passes through the inside of the casing from the base end opening of the casing and pulls up and collects the lid fixing member. Casing equipment. 前記蓋固定部材回収機は、磁力を利用して前記蓋固定部材を引き上げるものであることを特徴とする請求項８に記載のケーシング装置。   The casing device according to claim 8, wherein the lid fixing member collecting machine pulls up the lid fixing member using magnetic force.
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JP7223403B2 (en) 2019-02-08 2023-02-16 新協地水株式会社 Drilling rig and drilling method
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