JP7336407B2

JP7336407B2 - Soil sampler

Info

Publication number: JP7336407B2
Application number: JP2020050800A
Authority: JP
Inventors: 明北島
Original assignee: Fujita Corp
Current assignee: Fujita Corp
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2023-08-31
Anticipated expiration: 2040-03-23
Also published as: JP2021148697A

Description

本発明は、地中の土を土質試料として採取する土質試料採取装置に関する。 The present invention relates to a soil sampling apparatus for sampling soil from underground as a soil sample.

地盤改良工事において、改良土の強度確認は重要な品質管理項目である。
従来は撹拌混合直後の未固結状態の改良土を地表面から採取し別途モールド（型枠）に打設し、所定期間養生し、脱型して強度試験を実施して土質試料を評価し品質管理を行なっている。
また、地表面から直接採取できない地中の土質試料については、別途大型の重機を用いて採取装置を所定の深さまで押し込んで未固結状態の試料を採取するか、固結後、ボーリング機械により掘進採取している。
一方、特許文献１には、人力で操作する土質試料採取装置として以下のものが提案されている。
すなわち、下部にカッター刃を有する外筒部と、この外筒部内に脱着自在に設けられて外筒部のカッター刃によって掘進された未固結な土質試料をその内部に収容する内筒部を設ける。
内筒部の上部に外筒部を支持する支持部材を設けると共に、支持部材の側部に、外筒部をその軸心を中心として地山中へ該外筒部を押し込むと同時に、該外筒部を回転させるためのハンドルを設け、支持部材の上部に外筒部を掘進方向に押圧するための押圧レバーを設ける。 In ground improvement work, checking the strength of improved soil is an important quality control item.
Conventionally, unconsolidated improved soil immediately after stirring and mixing is collected from the ground surface, placed in a separate mold (formwork), cured for a predetermined period, removed from the mold, and strength tested to evaluate the soil sample. We do quality control.
In addition, for underground soil samples that cannot be collected directly from the ground surface, a separate large heavy machine is used to push the sampling device to a predetermined depth to collect samples in an unconsolidated state, or after solidification, a boring machine is used. Excavated.
On the other hand, Patent Literature 1 proposes the following as a manually operated soil sampling device.
That is, an outer cylinder portion having a cutter blade at the bottom thereof, and an inner cylinder portion which is detachably provided in the outer cylinder portion and accommodates therein an unconsolidated soil sample excavated by the cutter blade of the outer cylinder portion. establish.
A support member for supporting the outer cylinder is provided on the upper part of the inner cylinder, and a support member is provided on the side of the support member so that the outer cylinder is pushed into the ground around its axis, and at the same time, the outer cylinder is pushed into the ground. A handle for rotating the part is provided, and a pressing lever for pressing the outer cylindrical part in the excavation direction is provided on the upper part of the support member.

特開２００８－２４０４９４号公報JP 2008-240494 A

しかしながら、上記従来技術は、地表面近傍の土を土質試料として採取することを想定したものであり、土質試料採取装置を地中に押し込むことで内筒部の内部の全域に土が収容されると、それ以上深い位置での土を内筒部に収容することができず、任意の深さでの土質試料を採取することは難しい。
本発明は前記事情に鑑み案出されたものであって、本発明の目的は、地表面から任意の深さの土を迅速、安価かつ効率的に採取する上で有利な土質試料採取装置を提供することにある。 However, the conventional technology described above assumes that the soil near the ground surface is collected as a soil sample, and by pushing the soil sampling device into the ground, the soil is contained in the entire interior of the inner cylindrical portion. Then, soil at a deeper position cannot be accommodated in the inner cylinder, and it is difficult to collect a soil sample at an arbitrary depth.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a soil sampling apparatus that is advantageous in quickly, inexpensively, and efficiently sampling soil at any depth from the ground surface. to provide.

前記目的を達成するため、本発明は、地中の土を土質試料として採取する土質試料採取装置であって、筒状の試料採取管と、前記試料採取管の下端部に着脱可能に設けられた筒状のカッターと、前記試料採取管の上端部に着脱可能に設けられその内側が開口部とされた筒状の支持部材と、前記支持部材の開口部の径方向に沿って延在し前記支持部材の上端部の対向する２箇所を接続して前記開口部を２分する接続部材と、前記カッターと前記接続部材とを上下方向に一体移動可能で着脱可能に結合する結合部と、前記接続部材に設けられ押し込み用ロッドと一体回転可能にかつ着脱可能に結合されるロッド用結合部と、前記開口部が前記接続部材により２分された２つの半部開口部をそれぞれ閉塞すると共にそれぞれ上方に揺動可能な一対の蓋部材とを備えることを特徴とする。
また、本発明は、前記結合部は、前記カッターの外周面の周方向に間隔をおいた箇所に設けられた複数のヒンジと、前記複数のヒンジにより長手方向の一端が揺動可能に支持された結合用アームと、前記複数のヒンジに対応する前記支持部材の外周面の箇所に設けられ前記結合用アームの長手方向の他端が係脱可能に結合される係脱部とを含んで構成されていることを特徴とする。
また、本発明は、前記試料採取管の下端部と前記カッターとは、前記試料採取管の下端に設けられた下端小径部が前記カッターの大径内径部に着脱可能に挿入されることで結合され、前記試料採取管の上端部と前記支持部材とは、前記試料採取管の上端に設けられた上端小径部が前記支持部材の大径内径部に着脱可能に挿入されることで結合されていることを特徴とする。
また、本発明は、前記一対の蓋部材は、それぞれ前記接続部材側の箇所がヒンジを介して揺動可能に前記接続部材で支持され、前記各蓋部材の外周部が前記支持部材の上端に載置されることで前記半部開口部を閉塞する閉塞位置となることを特徴とする。
また、本発明は、前記支持部材の上端に載置される前記各蓋部材の外周部の外周縁の延在方向の中間部に、前記支持部材の外周面に重ね合わされる鍔部が設けられていることを特徴とする。
また、本発明は、前記接続部材は、前記支持部材の直径に対応する幅と、この幅に直交する厚さと、前記支持部材の軸心方向に沿った高さとを有し、前記厚さは前記幅および前記高さよりも小さい寸法の金属板により形成され、前記金属板の前記厚さの中心に前記開口部の直径が位置するように前記金属板が配置され、前記金属板は前記開口部から起立し、前記支持部材の軸心方向に沿った断面係数が大きく形成されていることを特徴とする。
また、本発明は、前記試料採取管と前記カッターと前記支持部材とが結合された状態で、それらの外周面は単一の円筒面上に位置していることを特徴とする。
また、本発明は、前記一対の蓋部材の輪郭は、前記一対の蓋部材によりそれぞれ前記半部開口部をそれぞれ閉塞した状態で平面視すると前記試料採取管の輪郭とほぼ合致していることを特徴とする。 In order to achieve the above object, the present invention provides a soil sampling apparatus for sampling soil from underground as a soil sample, comprising a tubular sampling tube and a detachably attached lower end of the sampling tube. a tubular cutter, a tubular support member detachably provided at the upper end of the sampling tube and having an opening on the inner side thereof, and a tubular cutter extending along the radial direction of the opening of the support member. a connection member that connects two opposing upper ends of the support member to divide the opening into two; a coupling portion that detachably couples the cutter and the connection member so as to be vertically movable together; a rod connecting portion which is provided on the connecting member and which is detachably connected to the pushing rod so as to be able to rotate integrally with the connecting member; It is characterized by comprising a pair of lid members each capable of swinging upward.
Further, according to the present invention, the connecting portion includes a plurality of hinges provided at circumferentially spaced locations on the outer peripheral surface of the cutter, and one end in the longitudinal direction is oscillatably supported by the plurality of hinges. and an engaging/disengaging portion provided at a portion of the outer peripheral surface of the support member corresponding to the plurality of hinges and to which the other end in the longitudinal direction of the connecting arm is detachably connected. It is characterized by being
Further, according to the present invention, the lower end portion of the sampling tube and the cutter are coupled by detachably inserting the lower end small diameter portion provided at the lower end of the sampling tube into the large diameter inner diameter portion of the cutter. The upper end portion of the sampling tube and the support member are coupled by detachably inserting the upper end small diameter portion provided at the upper end of the sampling tube into the large diameter inner diameter portion of the support member. It is characterized by
Further, according to the present invention, the pair of lid members are supported by the connection member so as to be swingable via hinges at locations on the connection member side, and the outer peripheral portions of the lid members are attached to the upper ends of the support members. It is characterized in that it becomes a closing position where the half opening is closed by being placed.
Further, according to the present invention, a collar portion is provided at an intermediate portion in the extending direction of the outer peripheral edge of the outer peripheral portion of each of the lid members placed on the upper end of the supporting member, the flange portion overlapping the outer peripheral surface of the supporting member. It is characterized by
Further, according to the present invention, the connection member has a width corresponding to the diameter of the support member, a thickness orthogonal to the width, and a height along the axial direction of the support member, and the thickness is The metal plate is formed of a metal plate having dimensions smaller than the width and the height, and the metal plate is arranged so that the diameter of the opening is positioned at the center of the thickness of the metal plate, and the metal plate is positioned in the opening. and a large section modulus along the axial direction of the support member.
Further, the present invention is characterized in that the outer peripheral surfaces of the sample-collecting tube, the cutter, and the support member are positioned on a single cylindrical surface when they are connected.
Further, according to the present invention, the contours of the pair of lid members substantially match the contours of the sample-collecting tube when viewed from above with the pair of lid members closing the half openings, respectively. Characterized by

本発明によれば、押し込み用ロッドを介して試料採取装置を地中に押し込むことで、試料採取装置を地中の任意の深さまで移動させて土質試料を採取することができ、任意の深さの土質試料を確実に採取する上で有利となる。
また、試料採取装置を地中に押し込む際には、土により一対の蓋部材が上方に揺動して土が２つの半部開口部から排出されるため、試料採取装置に加わる土の抵抗が少なく、試料採取装置を地中の任意の深さまで容易に押し込んで移動させることができ、所定の深さの土質試料の採取作業の効率化を図る上で有利となる。
また、試料採取装置を地中から引き上げる際には、土により一対の蓋部材が下方に揺動して２つの半部開口部を閉塞するため、試料採取管の上方に位置する土が試料採取管の内部に侵入して試料採取管の内部に採取された土質試料が下方に押し出されて試料採取管から脱落することが防止されるので、任意の深さの土質試料を確実に採取する上で有利となる。
また、結合部を操作することで、試料採取管と支持部材およびカッターとの結合、結合の解除を行なうことで、試料採取管を迅速に容易に交換できるため、複数の土質試料を採取する場合における土質試料の採取作業の効率化を図る上で有利となる。
また、試料採取装置は簡単な構成であり、手作業によって土質試料の採取を行なうことができるため、土質試料の採取に要するコストの抑制を図る上で有利となる。
また、結合部を、カッターの外周面に設けられた複数のヒンジと、複数のヒンジにより長手方向の一端が揺動可能に支持された結合用アームと、複数のヒンジに対応する支持部材の外周面の箇所に設けられた係脱部とを含んで構成すると、結合部によるカッターと接続部材との結合、結合の解除を簡単かつ確実に行なう上で有利となる。
また、試料採取管の下端部とカッターとが、試料採取管の下端に設けられた下端小径部がカッターの大径内径部に着脱可能に挿入されることで結合され、試料採取管の上端部と支持部材とが、試料採取管の上端に設けられた上端小径部が支持部材の大径内径部に着脱可能に挿入されることで結合されるようにすると、試料採取管の構成の簡単化を図りつつ、試料採取管と支持部材およびカッターとの結合、結合の解除を簡単かつ確実に行なう上でより有利となる。
また、一対の蓋部材が、それぞれ接続部材側の箇所がヒンジを介して揺動可能に接続部材で支持され、各蓋部材の外周部が支持部材の上端に載置されることで半部開口部を閉塞する閉塞位置となるようにすると、一対の蓋部材の構成の簡単化を図りつつ、それら蓋部材による半部開口部の閉塞状態を確実に保持する上で有利となる。
また、支持部材の上端に載置される各蓋部材の外周部の外周縁の延在方向の中間部に、支持部材の外周面に重ね合わされる鍔部を設けると、試料採取装置を地中から引き上げる際に半部開口部を確実に閉塞する上で有利となり、任意の深さの土質試料を確実に採取する上でより有利となる。
また、接続部材を、支持部材の直径に対応する幅と、この幅に直交する厚さと、支持部材の軸心方向に沿った高さとを有し、厚さは幅および高さよりも小さい寸法の金属板により形成し、金属板の厚さの中心に開口部の直径が位置するように金属板を配置し、金属板を開口部から起立し、支持部材の軸心方向に沿った断面係数を大きく形成すると、押し込み用ロッドからロッド用結合部を介して支持部材に加わる荷重に対する支持部材の強度、剛性を確保し、試料採取装置の耐久性の向上を図る上で有利となる。また、接続部材の厚さは板状の部材の厚さであり、幅と高さに比べ小さな寸法であることから、一対の半部開口部の大きさを大きく確保する上で有利となり、地中に掘進していく際に、試料採取管の内部に採取された不要の土を円滑に試料採取管の上方に排出する上で有利となり、土質試料の採取作業の効率化を図る上で有利となる。
また、試料採取管とカッターと支持部材とが結合された状態で、それらの外周面が単一の円筒面上に位置するようにすると、試料採取装置を地中に押し込む際の抵抗が少なく、かつ、試料採取装置を地中から引き上げるときの抵抗が少ないため、試料採取装置による土質試料の採取作業の効率化を図る上で有利となる。
また、一対の蓋部材の輪郭を、一対の蓋部材によりそれぞれ半部開口部をそれぞれ閉塞した状態で平面視すると試料採取管の輪郭とほぼ合致するようにすると、試料採取装置を地中から引き上げるときの抵抗が少ないため、試料採取装置による土質試料の採取作業の効率化を図る上で有利となる。 According to the present invention, by pushing the sampling device into the ground via the pushing rod, the sampling device can be moved to an arbitrary depth in the ground to collect a soil sample. It is advantageous for reliably collecting soil samples of
Further, when the sampling device is pushed into the ground, the soil causes the pair of cover members to swing upward and the soil is discharged from the two half openings, so that the resistance of the soil applied to the sampling device is increased. It is possible to easily push the sampling device to an arbitrary depth in the ground and move it, which is advantageous in improving the efficiency of the work of sampling a soil sample at a predetermined depth.
Further, when the sampling device is pulled up from the ground, the soil causes the pair of lid members to swing downward to close the two half openings. Since the soil sample collected inside the sampling tube is pushed downward and prevented from dropping out of the sampling tube, it is possible to reliably collect a soil sample at an arbitrary depth. is advantageous.
In addition, by manipulating the connecting portion, the sampling tube can be connected and disconnected with the support member and the cutter, so that the sampling tube can be quickly and easily exchanged. It is advantageous in improving the efficiency of the work of collecting soil samples.
In addition, since the sampling device has a simple structure and the soil sample can be manually collected, it is advantageous in reducing the cost required for collecting the soil sample.
Further, the connecting portion includes a plurality of hinges provided on the outer peripheral surface of the cutter, a connecting arm whose one end in the longitudinal direction is swingably supported by the plurality of hinges, and an outer circumference of a support member corresponding to the plurality of hinges. If it includes an engagement/disengagement portion provided at a portion of the surface, it is advantageous in that connection and disconnection between the cutter and the connection member by the connection portion can be easily and reliably performed.
In addition, the lower end portion of the sampling tube and the cutter are coupled by detachably inserting the lower end small diameter portion provided at the lower end of the sampling tube into the large diameter inner diameter portion of the cutter, and the upper end portion of the sampling tube. and the support member are connected by detachably inserting the upper end small-diameter portion provided at the upper end of the sample-collecting tube into the large-diameter inner-diameter portion of the support member, simplifying the configuration of the sample-collecting tube This is more advantageous in that the connection and disconnection between the sample-collecting tube, the support member and the cutter can be easily and reliably performed while achieving the above.
In addition, the pair of lid members are supported by the connecting member so as to be swingable via hinges at the connecting member side portions, and the outer peripheral portion of each lid member is placed on the upper end of the supporting member, thereby opening the half portion. If the closed position closes the part, it is advantageous to simplify the structure of the pair of lid members and to reliably maintain the closed state of the half opening by the lid members.
In addition, if a collar part is provided in the middle part of the extending direction of the outer peripheral edge of the outer peripheral part of each cover member placed on the upper end of the supporting member, and the flange part is superimposed on the outer peripheral surface of the supporting member, the sample collecting device can be placed underground. This is advantageous in reliably closing the half opening when pulling up from the soil, and is more advantageous in reliably collecting a soil sample at an arbitrary depth.
Also, the connection member has a width corresponding to the diameter of the support member, a thickness orthogonal to this width, and a height along the axial direction of the support member, the thickness being smaller than the width and height. It is formed of a metal plate, the metal plate is arranged so that the diameter of the opening is positioned at the center of the thickness of the metal plate, the metal plate is raised from the opening, and the section modulus along the axial direction of the support member is The large size ensures the strength and rigidity of the supporting member against the load applied to the supporting member from the pushing rod via the rod connecting portion, which is advantageous in improving the durability of the sample collecting device. In addition, the thickness of the connecting member is the thickness of the plate-like member, which is smaller than the width and height. When excavating inside, it is advantageous in smoothly discharging unnecessary soil collected inside the sampling pipe to the upper part of the sampling pipe, which is advantageous in improving the efficiency of the soil sample collection work. becomes.
In addition, when the sampling tube, the cutter, and the support member are combined and the outer peripheral surfaces thereof are positioned on a single cylindrical surface, resistance is reduced when the sampling device is pushed into the ground. In addition, since there is little resistance when pulling up the sampling device from the ground, it is advantageous in terms of improving the efficiency of the work of taking soil samples using the sampling device.
Further, when the contour of the pair of lid members is made to substantially match the contour of the sampling tube when viewed from above with the half openings closed by the pair of lid members, the sampling device can be pulled up from the ground. Since there is little resistance when the sample is applied, it is advantageous in improving the efficiency of the work of collecting soil samples using the sample collecting device.

実施の形態の土質試料採取装置の斜視図であり、蓋部材が閉塞位置にある状態を示す。1 is a perspective view of a soil sampling device according to an embodiment, showing a state in which a lid member is in a closed position; FIG. 実施の形態の土質試料採取装置の斜視図であり、蓋部材が開放位置にある状態を示す。1 is a perspective view of a soil sampling device according to an embodiment, showing a state in which a lid member is in an open position; FIG. 実施の形態の土質試料採取装置の正面図である。1 is a front view of a soil sampling device according to an embodiment; FIG. 図３のＡ矢視図である。4 is a view in the direction of arrow A in FIG. 3; FIG. 図３のＢ矢視図である。4 is a view in the direction of arrow B in FIG. 3; FIG. 実施の形態の土質試料採取装置の縦断面図であり、蓋部材が閉塞位置にある状態を示す。FIG. 2 is a longitudinal sectional view of the soil sampling device of the embodiment, showing a state in which the lid member is in the closed position; 実施の形態の土質試料採取装置の縦断面図であり、蓋部材が開放位置にある状態を示す。Fig. 2 is a vertical sectional view of the soil sampling device of the embodiment, showing a state in which the lid member is in the open position;

以下、図面を参照して本発明の実施の形態について説明する。
図１、図２に示すように、土質試料採取装置１０は地中の土を土質試料として採取するものであり、試料採取管１２と、カッター１４と、支持部材１６と、接続部材１８と、結合部２０と、ロッド用結合部２２と、一対の蓋部材２４とを備え、それらは全て鋼製である。
試料採取管１２は、外径よりも大きな寸法の軸心方向の長さを有する細長い円筒状を呈し、その内部は土質試料を収容保持する部分である。
図６に示すように、試料採取管１２は、本体１２０２と、下端小径部１２０４と、上端小径部１２０６とを備えている。
本体１２０２は均一内径および均一外径で形成されている。
下端小径部１２０４は、本体１２０２の下端に設けられ、その内径は本体１２０２の内径と同じ寸法で形成され、外径は本体１２０２の外径よりも小さい寸法で形成されている。
上端小径部１２０６は、本体１２０２の上端に設けられ、その内径は本体１２０２の内径と同じ寸法で形成され、外径は本体１２０２の外径よりも小さい寸法で形成されている。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a soil sampling device 10 is for sampling soil from the ground as a soil sample, and includes a sampling tube 12, a cutter 14, a support member 16, a connecting member 18, It comprises a coupling portion 20, a rod coupling portion 22 and a pair of lid members 24, all of which are made of steel.
The sampling tube 12 has an elongated cylindrical shape with an axial length larger than its outer diameter, and its interior is a portion for storing and holding a soil sample.
As shown in FIG. 6, the sampling tube 12 comprises a main body 1202, a lower reduced diameter portion 1204 and an upper reduced diameter portion 1206. As shown in FIG.
Body 1202 is formed with a uniform inner diameter and a uniform outer diameter.
The lower end small diameter portion 1204 is provided at the lower end of the main body 1202 and has an inner diameter that is the same as the inner diameter of the main body 1202 and an outer diameter that is smaller than the outer diameter of the main body 1202 .
The upper small diameter portion 1206 is provided at the upper end of the main body 1202 and has an inner diameter equal to the inner diameter of the main body 1202 and an outer diameter smaller than the outer diameter of the main body 1202 .

図６に示すように、カッター１４は、外径よりも小さな寸法の軸心方向の長さを有する扁平な円筒状を呈し、その軸心を試料採取管１２の軸心と合致させた状態で試料採取管１２の下端部に着脱可能に設けられている。
カッター１４は、その内周部１４０２の上部に大径内径部１４０４が形成され、内周部１４０２の下部の内径は大径内径部１４０４よりも小径であって試料採取管１２の内径と同じ寸法で形成されている。
試料採取管１２の下端部とカッター１４とは、試料採取管１２の下端に設けられた下端小径部１２０４がカッター１４の大径内径部１４０４に着脱可能に挿入されることで結合される。
カッター１４の外周部の上部の外径は、試料採取管１２の外径と同じ寸法で形成されている。
カッター１４の外周部の下部の外径は、下方に至るにつれて次第に内径が縮小する円錐面で形成されており、これによりカッター１４の下部に、土中に掘進可能な刃部１４０６が形成されている。 As shown in FIG. 6, the cutter 14 has a flat cylindrical shape with an axial length that is smaller than the outer diameter. It is detachably attached to the lower end of the sampling tube 12 .
The cutter 14 has a large inner diameter portion 1404 formed in the upper portion of the inner peripheral portion 1402 , and the inner diameter of the lower portion of the inner peripheral portion 1402 is smaller than the large inner diameter portion 1404 and is the same size as the inner diameter of the sampling tube 12 . is formed by
The lower end portion of the sampling tube 12 and the cutter 14 are coupled by detachably inserting the lower small diameter portion 1204 provided at the lower end of the sampling tube 12 into the large inner diameter portion 1404 of the cutter 14 .
The outer diameter of the upper portion of the outer peripheral portion of the cutter 14 is the same as the outer diameter of the sampling tube 12 .
The outer diameter of the lower portion of the outer peripheral portion of the cutter 14 is formed with a conical surface whose inner diameter gradually decreases toward the bottom, thereby forming a blade portion 1406 capable of digging into the ground at the lower portion of the cutter 14. there is

支持部材１６は、外径よりも小さな寸法の軸心方向の長さを有する扁平な円筒状を呈し、その内側が開口部１６０２とされ、その軸心を試料採取管１２の軸心と合致させた状態で試料採取管１２の上端部に着脱可能に設けられている。
支持部材１６の外径は、試料採取管１２の外径と同じ寸法で形成されている。
支持部材１６は、その内周部１６０４の下部に大径内径部１６０６が形成され、内周部１６０４の上部の内径は大径内径部１６０６よりも小径であって試料採取管１２の内径と同じ寸法で形成されている。
試料採取管１２の上端部と支持部材１６とは、試料採取管１２の上端に設けられた上端小径部１２０６が支持部材１６の大径内径部１６０６に着脱可能に挿入されることで結合されている。 The support member 16 has a flat cylindrical shape with an axial length that is smaller than the outer diameter. It is detachably attached to the upper end of the sampling tube 12 in the state of being held.
The outer diameter of the support member 16 is the same size as the outer diameter of the sampling tube 12 .
The support member 16 has a large inner diameter portion 1606 formed in the lower portion of the inner peripheral portion 1604 , and the inner diameter of the upper portion of the inner peripheral portion 1604 is smaller than the large inner diameter portion 1606 and is the same as the inner diameter of the sampling tube 12 . formed with dimensions.
The upper end portion of the sampling tube 12 and the support member 16 are coupled by detachably inserting the upper end small diameter portion 1206 provided at the upper end of the sampling tube 12 into the large diameter inner diameter portion 1606 of the support member 16 . there is

図３、図５に示すように、接続部材１８は、支持部材１６の開口部１６０２の径方向に沿って延在し支持部材１６の上端部の対向する２箇所を接続し、開口部１６０２を２分している。
接続部材１８は、支持部材１６の上端部に形成された切り欠き１６０３（図４参照）に挿入されて溶接で接合される台形状の下取り付け部１８０２と、下取り付け板部１８０２の上部の中央に設けられた長方形状の上取り付け部１８０６とを備えている。
本実施の形態では、図３、図５に示すように、下取り付け部１８０２と上取り付け部１８０６とを含む接続部材１８は、支持部材１６の直径に対応する幅Ｗと、この幅Ｗに直交する厚さＤと、支持部材１６の軸心方向に沿った高さＨとを有し、厚さＤは幅Ｗおよび高さＨよりも小さい寸法の金属板により形成され、支持部材１６の軸心方向に沿った断面係数が大きく形成されている。
図２、図６、図７に示すように、接続部材１８は、金属板の厚さＤの中心に開口部１６０２の直径が位置するように配置され、金属板は開口部１６０２から起立し、このような接続部材１８の主として下取り付け部１８０２によって支持部材１６の開口部１６０２が２分され、２つの半部開口部１６０２Ａが形成されている。 As shown in FIGS. 3 and 5, the connection member 18 extends along the radial direction of the opening 1602 of the support member 16 and connects two opposing portions of the upper end of the support member 16 to connect the opening 1602. It's been two minutes.
The connecting member 18 includes a trapezoidal lower mounting portion 1802 which is inserted into a notch 1603 (see FIG. 4) formed in the upper end portion of the support member 16 and joined by welding, and the center of the upper portion of the lower mounting plate portion 1802. and a rectangular upper mounting portion 1806 provided on the .
In this embodiment, as shown in FIGS. 3 and 5, connecting member 18 including lower mounting portion 1802 and upper mounting portion 1806 has a width W corresponding to the diameter of support member 16 and a width W perpendicular to width W. and a height H along the axial direction of the support member 16 , the thickness D being formed of a metal plate having dimensions smaller than the width W and the height H, and extending along the axis of the support member 16 . A large section modulus along the center direction is formed.
As shown in FIGS. 2, 6, and 7, the connecting member 18 is positioned so that the diameter of the opening 1602 is centered on the thickness D of the metal plate, the metal plate standing up from the opening 1602, The opening 1602 of the support member 16 is bisected mainly by the lower mounting portion 1802 of the connecting member 18 to form two half openings 1602A.

図３に示すように、ロッド用結合部２２は、接続部材１８の上取り付け部１８０６に設けられ、ロッド用結合部２２は接続部材１８と一体回転可能に取り付けられている。
ロッド用結合部２２には、押し込み用ロッド２８の下端２８０２が一体回転可能にかつ着脱可能に結合される。
本実施の形態では、ロッド用結合部２２は六角ナットで構成され、押し込み用ロッド２８の下端２８０２に形成された雄ねじが六角ナットの雌ねじに螺合されることでロッド用結合部２２は押し込み用ロッド２８と一方向において一体回転可能にかつ着脱可能に結合される。
なお、ロッド用結合部２２と押し込み用ロッド２８との結合構造として従来公知の様々な着脱可能な結合構造が使用可能である。
また、押し込み用ロッド２８は、例えば、１ｍ程度の長さで構成されており、複数の押し込み用ロッド２８を継ぎ足することで全長を伸ばすことができるように構成されている。 As shown in FIG. 3 , the rod coupling portion 22 is provided on the upper attachment portion 1806 of the connecting member 18 , and the rod coupling portion 22 is attached to the connecting member 18 so as to rotate integrally therewith.
A lower end 2802 of the pushing rod 28 is coupled to the rod coupling portion 22 so as to be rotatable together and detachably.
In this embodiment, the rod coupling portion 22 is configured by a hexagonal nut, and the male thread formed on the lower end 2802 of the pushing rod 28 is screwed into the female thread of the hexagonal nut, thereby forming the rod coupling portion 22 for pushing. It is coupled to the rod 28 so as to be able to rotate integrally in one direction and to be detachable.
Various conventionally known detachable coupling structures can be used as the coupling structure between the rod coupling portion 22 and the pushing rod 28 .
Also, the pushing rod 28 is configured to have a length of, for example, about 1 m, and is constructed so that the entire length can be extended by adding a plurality of pushing rods 28 .

図３、図４、図５に示すように、結合部２０は、カッター１４と接続部材１８とを上下方向に一体移動可能で着脱可能に結合するものである。
本実施の形態では、結合部２０は、複数のヒンジ３０と、結合用アーム３２と、係脱部３４とを含んで構成されている。
複数のヒンジ３０は、カッター１４の外周面１４０１の周方向に間隔をおいた箇所に、本実施の形態では２箇所に設けられている。
結合用アーム３２は、複数のヒンジ３０により長手方向の一端が揺動可能に支持されている。
係脱部３４は、複数のヒンジ３０に対応する支持部材１６の外周面１６０１の箇所に設けられ結合用アーム３２の長手方向の他端が係脱可能に結合される箇所である。
係脱部３４は、本実施の形態では、溝部３４０２、雄ねじ３４０４、蝶ナット３４０６を含んで構成されている。
本実施の形態では、支持部材１６の外周面１６０１の２箇所にフランジ３４１０が突設され、溝部３４０２はフランジ３４１０に支持部材１６の半径方向外側に開放状に形成されている。
また、雄ねじ３４０４は、結合用アーム３２の他端には、溝部３４０２に挿脱可能に挿入されるように形成され、蝶ナット３４０６はその雄ねじ３４０４に螺合されている。 As shown in FIGS. 3, 4, and 5, the coupling portion 20 couples the cutter 14 and the connecting member 18 so that they can be vertically moved integrally and detachably.
In this embodiment, the connecting portion 20 includes a plurality of hinges 30, connecting arms 32, and an engaging/disengaging portion 34. As shown in FIG.
A plurality of hinges 30 are provided at locations spaced apart in the circumferential direction of the outer peripheral surface 1401 of the cutter 14, two locations in this embodiment.
One longitudinal end of the coupling arm 32 is swingably supported by a plurality of hinges 30 .
The engaging/disengaging portion 34 is provided at a portion of the outer peripheral surface 1601 of the support member 16 corresponding to the plurality of hinges 30, and is a portion to which the other end of the connecting arm 32 in the longitudinal direction is detachably connected.
The engaging/disengaging portion 34 includes a groove portion 3402 , a male screw 3404 and a wing nut 3406 in this embodiment.
In this embodiment, flanges 3410 protrude from two locations on the outer peripheral surface 1601 of the support member 16 , and grooves 3402 are formed in the flanges 3410 so as to open outward in the radial direction of the support member 16 .
A male thread 3404 is formed at the other end of the coupling arm 32 so as to be removably inserted into the groove 3402 , and a wing nut 3406 is screwed onto the male thread 3404 .

したがって、試料採取管１２を支持部材１６とカッター１４で挟み込み、蝶ナット３４０６を緩めた状態で結合用アーム３２を上方に揺動させ、雄ねじ３４０４を溝部３４０２に挿入し、次いで、蝶ナット３４０６を締結することにより、カッター１４と接続部材１８とが上下方向に一体移動可能に結合される。
このように試料採取管１２とカッター１４と支持部材１６とが結合された状態で、それらの外周面１２０１、１４０１、１６０１は単一の円筒面上に位置している。
また、蝶ナット３４０６を緩めて結合用アーム３２を下方に揺動させ、雄ねじ３４０４を溝部３４０２から抜去すると、カッター１４と接続部材１８とを試料採取管１２から上下方向に分離することができる。 Therefore, the sampling tube 12 is sandwiched between the support member 16 and the cutter 14, the connecting arm 32 is swung upward with the wing nut 3406 loosened, the male screw 3404 is inserted into the groove 3402, and then the wing nut 3406 is tightened. By fastening, the cutter 14 and the connecting member 18 are coupled together so as to be vertically movable.
With the sampling tube 12, the cutter 14, and the support member 16 coupled in this way, their outer peripheral surfaces 1201, 1401, 1601 lie on a single cylindrical surface.
When the wing nut 3406 is loosened to swing the connecting arm 32 downward and the male screw 3404 is removed from the groove 3402, the cutter 14 and the connecting member 18 can be vertically separated from the sampling tube 12. FIG.

図５、図６、図７に示すように、一対の蓋部材２４は、２つの半部開口部１６０２Ａをそれぞれ閉塞すると共に、それぞれ上方に揺動可能に設けられている。
蓋部材２４は、蓋本体３６と、鍔部３８とを備えている。
図５に示すように、蓋本体３６は、半部開口部１６０２Ａに対応した半円板状を呈しており、直線部３６０２と、直線部３６０２の両端を接続する円弧部３６０４とを有している。
図６に示すように、蓋部材２４が半部開口部１６０２Ａを閉塞した状態で上方を向く蓋本体３６の面を蓋外面３６Ａといい、下方を向く面（試料採取筒に対向する面）を蓋内面３６Ｂという。
図４、図５に示すように、鍔部３８は、円弧部３６０４の延在方向の中央部から下方に突設されており、蓋部材２４が半部開口部１６０２Ａを閉塞した状態で、鍔部３８が支持部材１６の上部の外周面１６０１に重なるように設けられている。
言い換えると、鍔部３８は、支持部材１６の上端に載置される各蓋部材２４の外周部の外周縁の延在方向の中間部に設けられ、鍔部３８は支持部材１６の外周面１６０１に重ね合わされる。 As shown in FIGS. 5, 6, and 7, the pair of lid members 24 closes the two half openings 1602A and is provided so as to be able to swing upward.
The lid member 24 includes a lid body 36 and a collar portion 38 .
As shown in FIG. 5, the lid body 36 has a semi-disk shape corresponding to the half opening 1602A, and has a linear portion 3602 and arc portions 3604 connecting both ends of the linear portion 3602. there is
As shown in FIG. 6, the surface of the lid body 36 that faces upward when the lid member 24 closes the half opening 1602A is referred to as the lid outer surface 36A, and the surface that faces downward (the surface facing the sampling tube) is referred to as the lid outer surface 36A. This is referred to as the lid inner surface 36B.
As shown in FIGS. 4 and 5, the flange portion 38 projects downward from the central portion in the extending direction of the arc portion 3604, and when the lid member 24 closes the half opening portion 1602A, the flange portion 38 is closed. A portion 38 is provided so as to overlap the outer peripheral surface 1601 of the upper portion of the support member 16 .
In other words, the flange portion 38 is provided at the intermediate portion in the extending direction of the outer peripheral edge of the outer peripheral portion of each lid member 24 placed on the upper end of the support member 16 , and the flange portion 38 is located on the outer peripheral surface 1601 of the support member 16 . superimposed on the

図１、図５に示すように、一対の蓋部材２４は、それぞれ接続部材１８側の箇所、すなわち、蓋本体３６の直線部３６０２寄りの箇所がヒンジ４０を介して揺動可能に接続部材１８で支持されている。
ヒンジ４０は、支軸（不図示）と、支軸に揺動可能に連結された２枚の羽根４００２、４００４とを有している。
図５に示すように、本実施の形態では、ヒンジ４０の一方の羽根４００２が蓋本体３６の直線部３６０２寄りの箇所に取り付けられ、ヒンジ４０の他方の羽根４００４が支持部材１６に取り付けられている。
図６に示すように、各蓋部材２４の外周部が支持部材１６の上端に載置されることで半部開口部１６０２Ａを閉塞する閉塞位置となる。
図５に示すように、一対の蓋部材２４の輪郭は、一対の蓋部材２４によりそれぞれ半部開口部１６０２Ａをそれぞれ閉塞した状態で平面視すると試料採取管１２の輪郭とほぼ合致している。
また、図７に示すように、各蓋部材２４が半部開口部１６０２Ａから上方に揺動し、蓋部材２４（蓋本体３６の蓋外面３６Ａ）が支持部材１６に当接することで半部開口部１６０２Ａを開放する開放位置となる。 As shown in FIGS. 1 and 5 , each of the pair of lid members 24 has a portion on the side of the connecting member 18 , that is, a portion near the straight portion 3602 of the lid main body 36 , which is pivotably attached to the connecting member 18 via the hinge 40 . supported by
The hinge 40 has a support shaft (not shown) and two blades 4002 and 4004 swingably connected to the support shaft.
As shown in FIG. 5, in this embodiment, one blade 4002 of the hinge 40 is attached to a portion near the straight portion 3602 of the lid body 36, and the other blade 4004 of the hinge 40 is attached to the support member 16. there is
As shown in FIG. 6, the outer peripheral portion of each lid member 24 is placed on the upper end of the support member 16 so that the half opening 1602A is closed.
As shown in FIG. 5, the contours of the pair of lid members 24 substantially match the contours of the sampling tube 12 when viewed from above with the half openings 1602A closed by the pair of lid members 24, respectively.
Further, as shown in FIG. 7, each lid member 24 swings upward from the half opening portion 1602A, and the lid member 24 (cover outer surface 36A of the lid main body 36) comes into contact with the support member 16, thereby opening the half portion. It becomes an open position to open the portion 1602A.

次に土質試料採取装置１０の使用方法について説明する。
以下の例では、土質試料採取装置１０によって撹拌混合直後の未固結状態の改良土を土質試料として採取する場合について説明する。
予め、図１、図６に示すように、土質試料採取装置１０は、結合部２０により試料採取管１２を挟んでカッター１４と接続部材１８とが上下方向に一体移動可能に結合されているものとする。
押し込み用ロッド２８の先端をロッド用結合部２２に結合して、押し込み用ロッド２８と土質試料採取装置１０とを上下方向に一体移動可能に、かつ、押し込み用ロッド２８と土質試料採取装置１０とを一方向において一体回転可能に結合する。
土質試料を採取しようとする未固結状態の改良土が位置する地表面にカッター１４を向けて土質試料採取装置１０を載置し、手作業によって押し込み用ロッド２８を地中へ押し込むか、あるいは、押し込みつつ回転させる。この際、押し込み用ロッド２８の長さが足りなければ、採取する土質試料が位置する深さに対応して押し込み用ロッド２８を継ぎ足すことで押し込み用ロッド２８の全長を伸ばしていく。
これによりカッター１４が未固結状態の改良土を掘進しつつ下方に移動していく。 Next, how to use the soil sampling device 10 will be described.
In the following example, a case where unconsolidated improved soil immediately after stirring and mixing is collected as a soil sample by the soil sampling device 10 will be described.
As shown in FIGS. 1 and 6, in the soil sampling apparatus 10, the cutter 14 and the connecting member 18 are coupled to each other with the sampling tube 12 interposed therebetween by a coupling portion 20 so as to be vertically movable integrally. and
The tip of the pushing rod 28 is coupled to the rod connecting portion 22 so that the pushing rod 28 and the soil sampling device 10 can be vertically moved integrally, and the pushing rod 28 and the soil sampling device 10 are integrated. are rotatably coupled in one direction.
Place the soil sampling device 10 with the cutter 14 facing the ground surface where the unconsolidated improved soil to be sampled is located, and manually push the pushing rod 28 into the ground, or , push and rotate. At this time, if the length of the pushing rod 28 is insufficient, the pushing rod 28 is added according to the depth at which the soil sample to be collected is located, thereby extending the full length of the pushing rod 28 .
As a result, the cutter 14 moves downward while digging through the unconsolidated improved soil.

土質試料採取装置１０の掘進に伴い、カッター１４の内側の改良土は、カッター１４内部を通り試料採取管１２内部に至り、やがて、試料採取管１２の内部を上方に移動する土により一対の蓋部材２４が押し上げられ、図２、図７に示すように、蓋部材２４は上方に揺動されて開放位置となり、２つの半部開口部１６０２Ａは開放される。
さらなる土質試料採取装置１０の掘進に伴い、土質試料採取装置１０の内部の改良土は２つの半部開口部１６０２Ａを介して土質試料採取装置１０の上方に排出される。
押し込み用ロッド２８の本数あるいは押し込み量に基づいて土質試料採取装置１０の地表面からの深さ（深度）が把握できるため、土質試料採取装置１０の深さが土質試料を採取すべき目的の深さに到達したならば、押し込み用ロッド２８を手作業により地上に向かって引き上げる。
この際、一対の蓋部材２４は、土質試料採取装置１０に対する改良土の移動方向が上方から下方に変わることから、図１、図６に示すように、下方に揺動して閉塞位置となり、２つの半部開口部１６０２Ａを介した改良土の移動が禁止される。 As the soil sampling device 10 excavates, the improved soil inside the cutter 14 passes through the inside of the cutter 14 and reaches the inside of the sampling tube 12. Eventually, the soil moving upward inside the sampling tube 12 forms a pair of lids. The member 24 is pushed up and the lid member 24 is pivoted upward to the open position, as shown in FIGS. 2 and 7, and the two half openings 1602A are opened.
As the soil sampling device 10 is further excavated, the improved soil inside the soil sampling device 10 is discharged above the soil sampling device 10 through the two half openings 1602A.
Since the depth (depth) of the soil sampling device 10 from the ground surface can be grasped based on the number or the amount of pressing of the pushing rods 28, the depth of the soil sampling device 10 is the target depth at which the soil sample should be collected. When the height is reached, push rod 28 is manually pulled up toward the ground.
At this time, the pair of cover members 24 are swung downward to the closed position as shown in FIGS. Movement of modified soil through the two half openings 1602A is prohibited.

この状態で土質試料採取装置１０を引き上げると、一対の蓋部材２４によって２つの半部開口部１６０２Ａが閉塞されているため、試料採取管１２内部に保持された所定の深さの改良土（土質試料）は試料採取管１２内部に保持されたまま地中を移動する。
やがて、土質試料採取装置１０が地表面から地上に引き上げられる。
次いで、結合部２０を操作して、すなわち、蝶ナット３４０６を緩めて結合用アーム３２と係脱部３４の係合を解除し、結合用アーム３２を下方に揺動させ、カッター１４と接続部材１８とを試料採取管１２から上下方向に分離する。
分離した試料採取管１２内部の土質試料は、そのまま所定の期間養生して硬化させたのち、試料採取管１２から脱型して円柱状の土質試料として取り出し、硬化した土質試料を用いて強度試験を実施して土質試料を評価し品質管理を行なう。
なお、複数の土質試料を採取する場合は、予め複数の試料採取管１２を用意しておき、試料採取管１２を交換しながら、上記と同様の手順で土質試料の採取を行なう。 When the soil sampling device 10 is pulled up in this state, the two half openings 1602A are closed by the pair of lid members 24, so that the improved soil (soil quality) of a predetermined depth held inside the sampling tube 12 is removed. The sample) moves through the ground while being held inside the sampling tube 12 .
Before long, the soil sampling device 10 is pulled up from the ground surface.
Next, the connecting portion 20 is operated, that is, the wing nut 3406 is loosened to disengage the connecting arm 32 and the engaging/disengaging portion 34, the connecting arm 32 is swung downward, and the cutter 14 and the connecting member are moved. 18 are vertically separated from the sampling tube 12 .
The soil sample inside the separated sampling tube 12 is cured and hardened as it is for a predetermined period, then removed from the sampling tube 12 and taken out as a cylindrical soil sample, and a strength test is performed using the hardened soil sample. to evaluate soil samples and perform quality control.
When collecting a plurality of soil samples, a plurality of sampling tubes 12 are prepared in advance, and the soil samples are collected in the same procedure as above while exchanging the sampling tubes 12 .

本実施の形態によれば、筒状の試料採取管１２の下端部にカッター１４を、上端部に支持部材１６をそれぞれ着脱可能に設け、支持部材１６の上端部の対向する２箇所を接続する接続部材１８を設け、結合部２０によってカッター１４と接続部材１８とを上下方向に一体移動可能で着脱可能に結合し、接続部材１８に押し込み用ロッド２８と一体回転可能にかつ着脱可能に結合されるロッド用結合部２２を設け、接続部材１８の２つの半部開口部１６０２Ａをそれぞれ閉塞すると共にそれぞれ上方に揺動可能な一対の蓋部材２４を設けた。
したがって、押し込み用ロッド２８を介して土質試料採取装置１０を地中に押し込むことで、土質試料採取装置１０を地中の任意の深さまで移動させて土質試料を採取することができ、任意の深さの土質試料を確実に採取する上で有利となる。
また、土質試料採取装置１０を地中に押し込む際には、土により一対の蓋部材２４が上方に揺動して土が２つの半部開口部１６０２Ａから排出されるため、土質試料採取装置１０に加わる土の抵抗が少なく、土質試料採取装置１０を地中の任意の深さまで容易に押し込んで移動させることができ、所定の深さの土質試料の採取作業の効率化を図る上で有利となる。
また、土質試料採取装置１０を地中から引き上げる際には、土により一対の蓋部材２４が下方に揺動して２つの半部開口部１６０２Ａを閉塞するため、試料採取管１２の上方に位置する土が試料採取管１２の内部に侵入して試料採取管１２の内部に採取された土質試料が下方に押し出されて試料採取管１２から脱落することが防止されるので、任意の深さの土質試料を確実に採取する上で有利となる。
また、結合部２０を操作することで、試料採取管１２と支持部材１６およびカッター１４との結合、結合の解除を行なうことで、試料採取管１２を迅速に容易に交換できるため、複数の土質試料を採取する場合における土質試料の採取作業の効率化を図る上で有利となる。
また、土質試料採取装置１０は簡単な構成であり、手作業によって土質試料の採取を行なうことができるため、土質試料の採取に要するコストの抑制を図る上で有利となる。 According to the present embodiment, a cutter 14 is detachably provided at the lower end of a cylindrical sampling tube 12, and a support member 16 is detachably provided at the upper end. A connecting member 18 is provided, and the cutter 14 and the connecting member 18 are connected by a connecting portion 20 so as to be vertically movable integrally and detachably connected. A pair of lid members 24 are provided, each closing the two half openings 1602A of the connecting member 18 and capable of swinging upward.
Therefore, by pushing the soil sampling device 10 into the ground via the pushing rod 28, the soil sampling device 10 can be moved to an arbitrary depth in the ground to collect a soil sample. This is advantageous for reliably collecting soil samples of low thickness.
Further, when the soil sampling device 10 is pushed into the ground, the soil causes the pair of lid members 24 to swing upward, and the soil is discharged from the two half openings 1602A. The resistance of the soil applied to the soil is small, and the soil sampling device 10 can be easily pushed into the ground to an arbitrary depth and moved. Become.
Further, when the soil sampling device 10 is pulled up from the ground, the soil causes the pair of lid members 24 to swing downward to block the two half openings 1602A. This prevents the soil from entering the sampling tube 12 and the soil sample collected inside the sampling tube 12 from being pushed downward and falling out of the sampling tube 12. This is advantageous for reliably collecting soil samples.
Further, by manipulating the connecting portion 20, the sampling tube 12 can be connected and disconnected with the support member 16 and the cutter 14, so that the sampling tube 12 can be exchanged quickly and easily. This is advantageous in improving the efficiency of the work of collecting soil samples when collecting samples.
In addition, the soil sampling apparatus 10 has a simple configuration and can be manually sampled, which is advantageous in reducing the cost required for sampling the soil.

また、本実施の形態では、結合部２０を、カッター１４の外周面１４０１の周方向に間隔をおいた箇所に設けられた複数のヒンジ４０と、複数のヒンジ４０により長手方向の一端が揺動可能に支持された結合用アーム３２と、複数のヒンジ４０に対応する支持部材１６の外周面１６０１の箇所に設けられ結合用アーム３２の長手方向の他端が係脱可能に結合される係脱部３４とを含んで構成したので、結合部２０によるカッター１４と接続部材１８との結合、結合の解除を簡単かつ確実に行なう上で有利となる。 In addition, in the present embodiment, the coupling portion 20 is provided with a plurality of hinges 40 provided at circumferentially spaced locations on the outer peripheral surface 1401 of the cutter 14, and the plurality of hinges 40 swing one end in the longitudinal direction. A connection arm 32 that is removably supported and a connection/disengagement in which the other end of the connection arm 32 in the longitudinal direction provided at a portion of the outer peripheral surface 1601 of the support member 16 corresponding to the plurality of hinges 40 is removably connected. 34, it is advantageous in that the connection and disconnection between the cutter 14 and the connecting member 18 by the connecting portion 20 can be easily and reliably performed.

また、本実施の形態では、試料採取管１２の下端部とカッター１４とは、試料採取管１２の下端に設けられた下端小径部１２０４がカッター１４の大径内径部１４０４に着脱可能に挿入されることで結合され、試料採取管１２の上端部と支持部材１６とは、試料採取管１２の上端に設けられた上端小径部１２０６が支持部材１６の大径内径部１６０６に着脱可能に挿入されることで結合されているので、試料採取管１２の構成の簡単化を図りつつ、試料採取管１２と支持部材１６およびカッター１４との結合、結合の解除を簡単かつ確実に行なう上でより有利となる。 In the present embodiment, the lower end portion of the sampling tube 12 and the cutter 14 are such that the lower end small diameter portion 1204 provided at the lower end of the sampling tube 12 is detachably inserted into the large diameter inner diameter portion 1404 of the cutter 14 . The upper end portion of the sample collection tube 12 and the support member 16 are detachably inserted into the large diameter inner diameter portion 1606 of the support member 16 by the upper end small diameter portion 1206 provided at the upper end of the sample collection tube 12 . This is more advantageous in simplifying the configuration of the sampling tube 12 and in easily and reliably connecting and disconnecting the sampling tube 12 with the support member 16 and the cutter 14. becomes.

また、本実施の形態では、一対の蓋部材２４が、それぞれ接続部材１８側の箇所がヒンジ４０を介して揺動可能に接続部材１８で支持され、各蓋部材２４の外周部が支持部材１６の上端に載置されることで半部開口部１６０２Ａを閉塞する閉塞位置となるようにした。
したがって、一対の蓋部材２４の構成の簡単化を図りつつ、それら蓋部材２４による半部開口部１６０２Ａの閉塞状態を確実に保持する上で有利となる。 In addition, in the present embodiment, the pair of lid members 24 are swingably supported by the connection member 18 via hinges 40 at the portions on the connection member 18 side, and the outer peripheral portions of the lid members 24 are supported by the support member 16 . By placing it on the upper end of the , it is in a closed position that closes the half opening 1602A.
Therefore, it is advantageous to simplify the configuration of the pair of lid members 24 and to reliably keep the half opening 1602A closed by the lid members 24 .

また、本実施の形態では、支持部材１６の上端に載置される各蓋部材２４の外周部の外周縁の延在方向の中間部に、支持部材１６の外周面１６０１に重ね合わされる鍔部３８が設けられているので、土質試料採取装置１０を地中から引き上げる際に半部開口部１６０２Ａを確実に閉塞する上で有利となり、任意の深さの土質試料を確実に採取する上でより有利となる。 In addition, in the present embodiment, a collar portion that overlaps the outer peripheral surface 1601 of the support member 16 is provided at an intermediate portion in the extending direction of the outer peripheral edge of the outer peripheral portion of each lid member 24 placed on the upper end of the support member 16 . 38 is provided, which is advantageous in reliably closing the half opening 1602A when the soil sampling device 10 is pulled up from the ground, and is more effective in reliably sampling a soil sample at an arbitrary depth. be advantageous.

また、本実施の形態では、接続部材１８は、支持部材１６の直径に対応する幅Ｗと、この幅Ｗに直交する厚さＤと、支持部材１６の軸心方向に沿った高さＨとを有し、厚さＤは幅Ｗおよび高さＨよりも小さい寸法の金属板により形成し、金属板の厚さの中心に開口部１６０２の直径が位置するように金属板を配置し、金属板を開口部１６０２から起立し、支持部材１８の軸心方向に沿った断面係数を大きく形成した。
したがって、押し込み用ロッド２８からロッド用結合部２２を介して支持部材１６に加わる荷重に対する支持部材１６の強度、剛性を確保し、土質試料採取装置１０の耐久性の向上を図る上で有利となる。
また、接続部材１８は、板状の部材により構成され、接続部材１８の厚さＤは板状の部材の厚さＤであり、幅Ｗと高さＨに比べ小さな寸法であることから、一対の半部開口部１６０２Ａの大きさを大きく確保する上で有利となり、地中に掘進していく際に、試料採取管１２の内部に採取された不要の土を円滑に試料採取管１２の上方に排出する上で有利となり、土質試料の採取作業の効率化を図る上で有利となる In this embodiment, the connection member 18 has a width W corresponding to the diameter of the support member 16, a thickness D orthogonal to the width W, and a height H along the axial direction of the support member 16. The thickness D is formed by a metal plate having dimensions smaller than the width W and the height H, the metal plate is arranged so that the diameter of the opening 1602 is positioned at the center of the thickness of the metal plate, and the metal The plate was erected from the opening 1602 to form a large section modulus along the axial direction of the support member 18 .
Therefore, it is advantageous in ensuring the strength and rigidity of the support member 16 against the load applied to the support member 16 from the pushing rod 28 via the rod coupling portion 22 and improving the durability of the soil sampling apparatus 10. .
The connection member 18 is formed of a plate-like member, and the thickness D of the connection member 18 is the thickness D of the plate-like member, which is smaller than the width W and the height H. This is advantageous in securing a large size of the half opening 1602A, and when digging into the ground, the unnecessary soil collected inside the sampling tube 12 can be smoothly removed above the sampling tube 12. It is advantageous for discharging to the soil, and it is advantageous for improving the efficiency of the work of collecting soil samples.

また、本実施の形態によれば、試料採取管１２とカッター１４と支持部材１６とが結合された状態で、それらの外周面１２０１、１４０１、１６０１は単一の円筒面上に位置しているので、土質試料採取装置１０を地中に押し込む際の抵抗が少なく、かつ、土質試料採取装置１０を地中から引き上げるときの抵抗が少ないため、土質試料採取装置１０による土質試料の採取作業の効率化を図る上で有利となる。 Further, according to this embodiment, the outer peripheral surfaces 1201, 1401, 1601 of the sampling tube 12, the cutter 14, and the support member 16 are positioned on a single cylindrical surface when they are connected. Therefore, there is little resistance when the soil sampling device 10 is pushed into the ground, and there is little resistance when the soil sampling device 10 is pulled up from the ground, so the efficiency of the soil sample sampling work by the soil sampling device 10 is improved. It is advantageous in terms of

また、本実施の形態によれば、一対の蓋部材２４の輪郭は、一対の蓋部材２４によりそれぞれ半部開口部１６０２Ａをそれぞれ閉塞した状態で平面視すると試料採取管１２の輪郭とほぼ合致しているので、土質試料採取装置１０を地中から引き上げるときの抵抗が少ないため、土質試料採取装置１０による土質試料の採取作業の効率化を図る上で有利となる。 Further, according to the present embodiment, the contours of the pair of lid members 24 substantially match the contours of the sampling tube 12 when viewed from above with the pair of lid members 24 closing the half openings 1602A. Therefore, there is less resistance when the soil sampling device 10 is pulled up from the ground, which is advantageous in improving the efficiency of the soil sample sampling work using the soil sampling device 10 .

１０土質試料採取装置
１２試料採取管
１２０１外周面
１２０２本体
１２０４下端小径部
１２０６上端小径部
１４カッター
１４０１外周面
１４０２内周部
１４０４大径内径部
１４０６刃部
１６支持部材
１６０１外周面
１６０２開口部
１６０３切り欠き
１６０４内周部
１６０６大径内径部
１６０２Ａ半部開口部
１８接続部材
１８０２下取り付け部
１８０４基部
１８０６上取り付け部
２０結合部
２２ロッド用結合部
２４蓋部材
２８押し込み用ロッド
２８０２下端
３０ヒンジ
３２結合用アーム
３４係脱部
３４０２溝部
３４０４雄ねじ
３４０６蝶ナット
３４１０フランジ
３６蓋本体
３６０２直線部
３６０４円弧部
３８鍔部
４０ヒンジ
４００２一方の羽根
４００４他方の羽根 10 soil sampling device 12 sampling tube 1201 outer peripheral surface 1202 main body 1204 lower end small diameter portion 1206 upper end small diameter portion 14 cutter 1401 outer peripheral surface 1402 inner peripheral portion 1404 large inner diameter portion 1406 blade portion 16 support member 1601 outer peripheral surface 1602 opening 1603 cut Notch 1604 Inner peripheral portion 1606 Large diameter inner diameter portion 1602A Half opening 18 Connecting member 1802 Lower attaching portion 1804 Base portion 1806 Upper attaching portion 20 Connecting portion 22 Rod connecting portion 24 Lid member 28 Pushing rod 2802 Lower end 30 Hinge 32 For connecting Arm 34 Engagement/disengagement portion 3402 Groove portion 3404 Male screw 3406 Wing nut 3410 Flange 36 Lid main body 3602 Linear portion 3604 Arc portion 38 Collar portion 40 Hinge 4002 One blade 4004 The other blade

Claims

A soil sampling device for sampling soil from the ground as a soil sample,
a cylindrical sampling tube;
a tubular cutter detachably provided at the lower end of the sampling tube;
a cylindrical support member detachably provided at the upper end of the sample collection tube and having an opening inside thereof;
a connecting member extending along the radial direction of the opening of the supporting member and connecting two opposing portions of the upper end of the supporting member to divide the opening into two;
a connecting portion that detachably connects the cutter and the connecting member so as to be vertically movable together;
a rod connecting portion provided on the connecting member and connected detachably and rotatably with the pushing rod;
a pair of lid members each closing two half openings of which the opening is divided into two by the connecting member and capable of swinging upward;
A soil sampling device, comprising:

The connecting part is
a plurality of hinges provided at circumferentially spaced locations on the outer peripheral surface of the cutter;
a connecting arm having one longitudinal end swingably supported by the plurality of hinges;
an engaging/disengaging portion provided at a portion of the outer peripheral surface of the support member corresponding to the plurality of hinges and to which the other end in the longitudinal direction of the connecting arm is detachably connected;
2. The soil sampling device according to claim 1, comprising:

The lower end portion of the sampling tube and the cutter are coupled by detachably inserting a lower small diameter portion provided at the lower end of the sampling tube into the large diameter inner diameter portion of the cutter,
The upper end portion of the sampling tube and the support member are coupled by detachably inserting the upper small diameter portion provided at the upper end of the sampling tube into the large diameter inner diameter portion of the support member.
3. The soil sampling device according to claim 2, characterized in that:

The pair of lid members are swingably supported by the connecting member via hinges at portions on the connecting member side,
The outer peripheral portion of each lid member is placed on the upper end of the support member to be in a closed position that closes the half opening.
4. The soil sampling device according to any one of claims 1 to 3, characterized in that:

A flange overlapping the outer peripheral surface of the supporting member is provided at an intermediate portion in the extending direction of the outer peripheral edge of the outer peripheral portion of each of the lid members placed on the upper end of the supporting member.
5. The soil sampling device according to claim 4, characterized in that:

The connection member has a width corresponding to the diameter of the support member, a thickness orthogonal to the width, and a height along the axial direction of the support member, the thickness being greater than the width and the height. is formed by a metal plate with small dimensions,
The metal plate is arranged so that the diameter of the opening is positioned at the center of the thickness of the metal plate, the metal plate stands up from the opening, and has a section modulus along the axial direction of the support member. is greatly formed,
The soil sampling device according to any one of claims 1 to 5, characterized in that:

When the sampling tube, the cutter, and the support member are combined, their outer peripheral surfaces lie on a single cylindrical surface.
The soil sampling device according to any one of claims 1 to 6, characterized in that:

The contours of the pair of lid members substantially match the contours of the sampling tube when viewed from above with the half openings closed by the pair of lid members, respectively.
The soil sampling device according to any one of claims 1 to 7, characterized in that: