JP2007120165A

JP2007120165A - Soil sampling device

Info

Publication number: JP2007120165A
Application number: JP2005314625A
Authority: JP
Inventors: Akihiro Yamamoto; 明弘山本
Original assignee: Daiwa House Industry Co Ltd
Current assignee: Daiwa House Industry Co Ltd
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2007-05-17

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil sampling device which facilitates sampling works. <P>SOLUTION: The soil sampling device is provided with a soil storage rod 2 and a top end part 3. In the soil storage rod 2 a plurality of soil storage parts 4 etc. which are opened to a top end side and a non-soil storage part 5 are provided around an axial center. The top end part 3 is provided with an opening part 9 for introducing soil, which is relatively rotatably coupled with a top end of the soil storage rod 2 and is offcentered from the axial center and is opened to the top end side. The opening part 9 for introducing soil is formed to coincide with one of the soil storage parts 4 etc., provided in the soil storage rod and the non-soil storage part 5 by relatively rotative displacement of the top end part 3 and the soil storage rod 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、地盤調査に用いられる土サンプリング装置に関する。 The present invention relates to a soil sampling device used for ground survey.

地盤の土質調査において行われる土のサンプリングは、サンプリングする深度まで先行掘りを行った後、その孔に、先端にサンプラーを付けたロッドを差し込み、地上でロッドの上端を打撃してサンプラーに土を採取させるというようにして行われている。 In the soil sampling conducted in the soil investigation, after conducting a pre-digging to the sampling depth, a rod with a sampler at the tip is inserted into the hole, and the top of the rod is hit on the ground to dip the soil into the sampler. It is done in such a way that it is collected.

また、深度の異なる複数深さ位置で土のサンプリングを行う場合は、最初の深度で上記のようにして土の採取を行った後、ロッドとサンプラーを孔から一旦引き抜き、その孔をプレボーリングで次の深度にまで深くし、そして、再度、サンプラーとロッドを孔に差し込んでその深度の土を採取するという作業を繰り返すことが行われている。 In addition, when sampling soil at multiple depths with different depths, after sampling the soil as described above at the initial depth, the rod and sampler are once pulled out of the hole and the hole is pre-bored. The work of deepening to the next depth, and again sampling the soil at that depth by inserting a sampler and a rod into the hole is being repeated.

しかしながら、上記のようなサンプリング方法では、地盤を先行掘りした後に、サンプラーを付けたロッドをその孔に差し込んでサンプリングを行うものであるため、手間を要し、作業が厄介であるという問題がある。 However, in the sampling method as described above, since the sampling is performed by inserting the rod with the sampler into the hole after the ground has been dug up beforehand, there is a problem that the work is troublesome and troublesome. .

また、深度の異なる複数深さ位置で土のサンプリングを行う場合も、ボーリングとサンプリングを交互に繰り返していかなければならないため、手間を要し、作業が厄介であるという問題がある。 In addition, when soil is sampled at a plurality of depth positions with different depths, boring and sampling must be repeated alternately, which is troublesome and cumbersome.

本発明は、上記のような問題点に鑑み、サンプリング作業を容易にすることができる土サンプリング装置を提供することを課題とする。 In view of the above problems, an object of the present invention is to provide a soil sampling apparatus that can facilitate a sampling operation.

上記の課題は、土収容ロッドと先端部品とが備えられ、
土収容ロッドには、先端側に面して開口する土収容部と、非土収容部とが軸心回りに周設され、
先端部品は、土収容ロッドの先端部に相対回転可能に連結されると共に、軸心から偏心して先端側に面して開口する土導入用開口部を備え、
土導入用開口部は、先端部品と土収容ロッドとの相対回転変位により、土収容ロッドに備えられた土収容部と非土収容部の選択されたいずれかと一致するようになされていることを特徴とする土サンプリング装置によって解決される。 Said subject is equipped with a soil accommodation rod and a tip part,
In the soil accommodation rod, a soil accommodation portion that opens facing the front end side and a non-soil accommodation portion are provided around the axis,
The tip component is connected to the tip portion of the soil accommodation rod so as to be relatively rotatable, and includes an opening for soil introduction that is eccentric from the axis and opens toward the tip side,
The soil introduction opening is made to coincide with the selected one of the soil accommodation part and the non-soil accommodation part provided in the soil accommodation rod by the relative rotational displacement between the tip part and the earth accommodation rod. Solved by the featured soil sampling device.

この土サンプリング装置では、先端部品の土導入用開口部と土収容ロッドの非土収容部とを一致させた状態で地盤に貫入していき、採取予定の深度に達したら、そのまま、土収容ロッドを回転させ、先端部品の土導入用開口部と土収容ロッドの土収容部とを一致させ、そして、下方に押し込めば、その深度の土が先端部品の土導入用開口部を通じて土収容ロッドの土収容部内に採取され、サンプリング作業を容易にすることができる。 In this soil sampling device, the soil introduction rod is penetrated into the ground in a state where the soil introduction opening of the tip part and the non-soil accommodation portion of the soil accommodation rod coincide with each other. , The soil introduction opening of the tip part and the soil accommodation part of the soil accommodation rod are aligned with each other, and if pushed down, the soil at that depth passes through the soil introduction opening of the tip part. Sampling work can be facilitated by sampling in the soil container.

この土サンプリング装置において、土収容部が複数備えられている場合は、上記のように最初の深度でサンプリングを行った後、土収容ロッドを回転させて先端部品の土導入用開口部と土収容ロッドの非土収容部とを一致させ、その状態で次の深度まで貫入していき、その深度に達したら、そのまま、土収容ロッドを回転させ、先端部品の土導入用開口部と土収容ロッドの他の土収容部とを一致させ、そして、下方に押し込めば、その深度の土が先端部品の土導入用開口部を通じて前記他の土収容ロッドの土収容部内に採取され、深度の異なる複数深さ位置での土のサンプリングを作業容易に行っていくことができる。 In this soil sampling device, when there are a plurality of soil storage portions, after sampling at the initial depth as described above, the soil storage rod is rotated to open the soil introduction opening and the soil storage of the tip part. Align the rod with the non-soil storage part and penetrate to the next depth in that state, and when that depth is reached, rotate the soil storage rod as it is, and the soil introduction opening of the tip part and the soil storage rod If the other soil container is made to coincide with the other soil container and pushed downward, the soil at that depth is collected into the soil container of the other soil container rod through the soil introduction opening of the tip part, and a plurality of different depths are collected. Sampling of soil at a deep position can be performed easily.

また、先端部品に、土と係合し、土中で回転するのを阻止する翼が備えられている場合は、地中における先端部品の土導入用開口部の回転方向位置を一定に保つことができて、土収容ロッドの回転操作により、土導入用開口部と土収容部や、土導入用開口部と非土収容部を容易に一致させることができる。 Also, if the tip part is equipped with a wing that engages with the soil and prevents it from rotating in the soil, keep the rotational position of the soil introduction opening of the tip part in the ground constant. Thus, the soil introduction opening and the soil accommodation portion, or the soil introduction opening and the non-soil accommodation portion can be easily matched by rotating the soil accommodation rod.

また、先端部品と土収容ロッドとが軸方向に相対変位可能に連結されており、先端部品と土収容ロッドとに、先端部品の土導入開口部をロッドの土収容部及び非土収容部の各位置で位置決めする位置決め用の凹凸が備えられ、先端部品と土収容ロッドとを軸方向に変位させることで位置決め用の凹凸の係合、非係合の切換えを行うことができるようになされているとよい。 In addition, the tip part and the soil accommodation rod are connected so as to be relatively displaceable in the axial direction, and the soil introduction opening of the tip part is connected to the soil accommodation part and the non-soil accommodation part of the rod. Positioning unevenness is provided for positioning at each position, and the engagement and disengagement of the positioning unevenness can be switched by displacing the tip part and the soil accommodation rod in the axial direction. It is good to be.

この場合は、位置決め用凹凸の係合によって、土導入用開口部と土収容部、土導入用開口部と非土収容部を正確に一致させることができ、貫入途中での土収容部への土の侵入や、採取中の土の採取不足の発生を防ぐことができる。しかも、土収容ロッドを軸方向に変位させることで位置決め用の凹凸の係合、非係合の切換えを行うことができるので、操作も容易である。これら位置決め用凹凸がテーパー嵌合するようになされている場合は、そのガイド作用で、土導入用開口部と土収容部、土導入用開口部と非土収容部を容易に一致させることができる。 In this case, by the engagement of the positioning irregularities, the soil introduction opening and the soil accommodation portion, the soil introduction opening and the non-soil accommodation portion can be accurately matched, and the soil accommodation portion in the middle of the penetration It can prevent the invasion of soil and the occurrence of insufficient soil collection during collection. In addition, since the positioning concave and convex portions can be switched between engagement and disengagement by displacing the soil accommodation rod in the axial direction, the operation is easy. When these positioning irregularities are tapered and fitted, it is possible to easily match the soil introduction opening and the soil accommodation portion, and the soil introduction opening and the non-soil accommodation portion by the guide action. .

また、土収容ロッドは、外筒体と、該外筒体の内部に抜き差し可能に差し込まれて外筒体と一体回転するように設けられた芯体とを備え、
芯体の外周部及び／又は外筒体の内周部に軸線方向に延びるように設けられた溝によって、外筒体と芯体との間に土収容部が形成され、芯体に、土収容部の基端側を閉じる壁が備えられているとよい。 The soil accommodation rod includes an outer cylindrical body and a core body that is inserted into the outer cylindrical body so as to be detachable and integrally rotated with the outer cylindrical body.
A groove provided in the outer peripheral portion of the core body and / or the inner peripheral portion of the outer cylinder body so as to extend in the axial direction forms a soil accommodating portion between the outer cylinder body and the core body, A wall that closes the proximal end side of the housing portion may be provided.

この場合は、土収容ロッド内の土収容部に採取された土を、先端部品を取り外し、外筒体から芯体を引き抜くことにより容易に取り出すことができる。 In this case, the soil collected in the soil accommodation portion in the soil accommodation rod can be easily taken out by removing the tip part and pulling out the core body from the outer cylinder.

本発明は、以上のとおりのものであるから、地盤調査において、土のサンプリング作業を容易にすることができる。 Since the present invention is as described above, the soil sampling operation can be facilitated in the ground survey.

次に、本発明の実施最良形態を図面に基づいて説明する。 Next, the best mode for carrying out the present invention will be described with reference to the drawings.

図１及び図２に示す実施形態の土サンプリング装置１において、２は土収容ロッド、３は先端部品である。 In the soil sampling apparatus 1 of the embodiment shown in FIGS. 1 and 2, 2 is a soil accommodation rod, and 3 is a tip part.

土収容ロッド２は、図２（ロ）に示すように、軸心回りに、先端側に面して開口する複数、本実施形態では４つの土収容部４…と、１つの非土収容部５とが周設されたものである。 As shown in FIG. 2 (b), the soil accommodation rod 2 has a plurality of openings that face the front end side around the shaft center, four soil accommodation portions 4 in this embodiment, and one non-soil accommodation portion. 5 is provided around.

該土収容ロッド２は、図１に示すように、先端側に開いた外筒体６と、該外筒体６の先端側から内部に抜き差し可能に差し込まれた芯体７とを備え、図２（ロ）に示すように、芯体７の外周部には、軸線方向に延びる４本の溝７ａが、周方向の５分割位置のうちの４位置に間隔的に周設され、芯体７が外筒体６内に差し込まれた状態になることにより、芯体７と外筒体６との間に、４つの土収容部４…と、１つの非土収容部５とが形成されるようになされている。 As shown in FIG. 1, the soil accommodation rod 2 includes an outer cylindrical body 6 that opens to the front end side, and a core body 7 that is inserted into the inner cylindrical body 6 so that it can be inserted into and removed from the front end side. As shown in FIG. 2 (b), on the outer peripheral portion of the core body 7, four grooves 7a extending in the axial direction are circumferentially provided at four positions among the five divided positions in the circumferential direction. When 7 is inserted into the outer cylindrical body 6, four soil accommodating portions 4 and one non-soil accommodating portion 5 are formed between the core body 7 and the outer cylindrical body 6. It is made so that.

そして、図１に示すように、芯体７の基端部には、壁としてのプレート部７ｂが備えられ、各土収容部４…を形成する溝７ａ…の基端部が該プレート部７ｂによって閉じられている。 As shown in FIG. 1, the base end portion of the core body 7 is provided with a plate portion 7 b as a wall, and the base end portion of the groove 7 a... Forming each soil accommodating portion 4. Closed by.

また、芯体７の基端プレート部７ｂの上面部には、立ち上がり板部７ｃが備えられ、そこに通孔７ｄが設けられると共に、外筒体６の周壁にも孔６ａが明けられ、これら孔７ｄ，６ａに側方からピン８が差し込まれることで、芯体７が外筒体６とが一体化され、一体回転をするようになされている。なお、図１において、６ｂ…は、土収容部４…内の水や空気を抜く孔である。 Further, a rising plate portion 7c is provided on the upper surface portion of the base end plate portion 7b of the core body 7, and a through hole 7d is provided therein, and a hole 6a is also formed in the peripheral wall of the outer cylindrical body 6. When the pin 8 is inserted into the holes 7d and 6a from the side, the core body 7 is integrated with the outer cylinder body 6 so as to rotate integrally. In FIG. 1, 6 b... Is a hole through which water and air in the soil container 4.

一方、先端部品３は、図１に示すように、外筒体６に外嵌め可能な筒部３ａを備え、該筒部３ａの基端内周部に形成された雌ネジ部３ｂと、外筒体６の先端外周部に形成された雄ネジ部６ｃとを螺合させ、図２（ハ）（ホ）に示すように、ネジ部３ｂ，６ｃ同士を互いに越えさせることができるようになされており、越えさせた状態にすることで、先端部品３と、外筒体６ひいては土収容ロッド２とが相対回転と軸方向の相対変位をすることができるように連結されている。 On the other hand, as shown in FIG. 1, the tip part 3 includes a cylindrical portion 3 a that can be fitted onto the outer cylindrical body 6, and a female screw portion 3 b formed on the inner peripheral portion of the proximal end of the cylindrical portion 3 a, The male threaded portion 6c formed on the outer peripheral portion of the tip of the cylindrical body 6 is screwed so that the threaded portions 3b and 6c can be passed over each other as shown in FIGS. In this state, the tip part 3 and the outer cylindrical body 6 and thus the soil accommodation rod 2 are connected so as to be capable of relative rotation and relative displacement in the axial direction.

そして、先端部品３の先端部は、筒部３ａ内と連通する中空の錐状部３ｃからなり、また、上記の土収容ロッド２を構成する芯体７の先端部７ｅも、先端部品３の錐状部３ｃの中空部内にしっくりと嵌合する錐状部に形成されていて、各土収容部４…は、芯体７の先端錐状部７ｅの錘面部に開口しており、先端部品３の先端中空錐状部３ｃの錘面部には、該土収容ロッド２の土収容部４…と非土収容部５の選択されたいずれか一つと一致する土導入用開口部９が先端側に面して開口するように設けられている。 The tip part of the tip part 3 is composed of a hollow cone-shaped part 3c communicating with the inside of the cylindrical part 3a, and the tip part 7e of the core body 7 constituting the soil accommodating rod 2 is also the tip part 3 of the tip part 3. It is formed in a conical portion that fits snugly in the hollow portion of the conical portion 3 c, and each soil accommodating portion 4... Opens to the weight surface portion of the distal end conical portion 7 e of the core body 7. 3 is provided with a soil introduction opening 9 that coincides with any one of the soil accommodation portions 4... And the non-soil accommodation portion 5 of the soil accommodation rod 2 on the weight surface portion of the distal hollow conical portion 3c. It is provided so that it may face and open.

また、先端部品３の先端錐状部３ｃ内には、テーパー状の位置決め用凸３ｄ…が周方向に間隔的に設けられると共に、土収容ロッド２の芯体７の先端錐状部７ｅの錘面部には、位置決め用凸３ｄ…と係合するテーパー状位置決め用凹７ｆ…が周方向に間隔的に設けられ、先端部品３の土導入用開口部９を、土収容ロッド２の土収容部４…及び非土収容部５の選択されたいずれかに合わせて土収容ロッド２を先端部品３に対して軸方向に進出させることにより、これら位置決め用の凸３ｄ…と凹７ｆ…とが係合し、先端部品３の土導入用開口部９が、選択された土収容部４…又は非土収容部５の位置に正確に位置決めされるようになされている。 Further, in the tip cone portion 3c of the tip component 3, tapered positioning projections 3d are provided at intervals in the circumferential direction, and the weight of the tip cone portion 7e of the core body 7 of the soil accommodation rod 2 is provided. The surface portion is provided with tapered positioning recesses 7f that engage with the positioning projections 3d, and are provided at intervals in the circumferential direction, and the soil introduction opening 9 of the tip part 3 is connected to the soil storage portion of the soil storage rod 2. 4 and the non-soil receiving portion 5 are selected to move the soil receiving rod 2 in the axial direction with respect to the tip part 3 so that the positioning protrusions 3d and the recesses 7f are engaged. Accordingly, the soil introduction opening 9 of the tip part 3 is accurately positioned at the position of the selected soil container 4... Or the non-soil container 5.

更に、先端部品３の先端錐状部３ｃの外周錘面部には、土と係合し、先端部品３が土中で回転するのを阻止する翼３ｅ…が周方向に複数、間隔的に設けられている。 Further, a plurality of blades 3e... Are provided at intervals on the outer circumferential weight surface portion of the tip conical portion 3c of the tip component 3 in the circumferential direction so as to engage with the soil and prevent the tip component 3 from rotating in the soil. It has been.

土のサンプリングは、図３（イ）に示すように、土収容ロッド２の１番非土収容部を先端部品３の土導入用開口部９と一致させた状態にして、土サンプリング装置１を地盤Ｇに貫入していく。そして、図３（ロ）に示すように、サンプリングを行う最初の深度ｄ１に達したら、地上からの操作で土収容ロッド２を上方に変位させて（ａ）、回す（ｂ）ことにより、土収容ロッド２の２番土収容部を先端部品３の土導入用開口部９と一致させ、土サンプリング装置１を地盤に押し込む（ｃ）。すると、２番土収容部内にその深度ｄ１の土が採取される。 In the soil sampling, as shown in FIG. 3 (a), the soil sampling device 1 is set with the first non-soil storage portion of the soil storage rod 2 aligned with the soil introduction opening 9 of the tip part 3. It penetrates into the ground G. Then, as shown in FIG. 3 (b), when the first depth d1 for sampling is reached, the soil receiving rod 2 is displaced upward (a) and turned (b) by an operation from the ground. The second soil accommodating portion of the accommodating rod 2 is aligned with the soil introduction opening 9 of the tip part 3, and the soil sampling device 1 is pushed into the ground (c). Then, the soil of the depth d1 is extract | collected in the 2nd soil accommodating part.

先端部品３に備えられた翼３ｅ…と土の係合により、地中における先端部品３の土導入用開口部９の回転方向位置は一定に保たれるし、また、位置決め用の凹凸３ｄ，７ｆの係合作用によって、土導入用開口部９と２番土収容部４を地上からの回転操作で容易に一致させることができる。 By the engagement of the wings 3e provided on the tip part 3 with the soil, the rotational position of the soil introduction opening 9 of the tip part 3 in the ground is kept constant, and the positioning unevenness 3d, By the engaging action of 7f, the soil introduction opening 9 and the second soil accommodating portion 4 can be easily matched by a rotating operation from the ground.

次いで、図４（ハ）に示すように、地上からの操作で、土収容ロッド２を上方に変位させ、回すことにより土収容ロッド２の１番非土収容部を先端部品３の土導入用開口部９と一致させた状態に戻し、土サンプリング装置１を次の深度ｄ２まで貫入していく。深度ｄ２に達したら、図４（ニ）に示すように、地上からの操作で土収容ロッド２を上方に変位させて（ａ）、回す（ｂ）ことにより、土収容ロッド２の３番土収容部を先端部品３の土導入用開口部９と一致させ、土収容ロッド２を地盤に押し込む（ｃ）。すると、３番土収容部４内に土が採取される。以後は、同様の操作により、４番土収容部、５番収容部に土を採取していけば、深度の異なる４つの深さ位置で土をサンプリングすることができる。 Next, as shown in FIG. 4 (c), the first non-soil receiving portion of the soil receiving rod 2 is used for introducing soil into the tip part 3 by displacing the soil receiving rod 2 upward by an operation from the ground and turning it. It returns to the state made to correspond to the opening part 9, and the soil sampling apparatus 1 penetrates to the next depth d2. When the depth d2 is reached, as shown in FIG. 4 (d), the soil containing rod 2 is displaced upward (a) and turned (b) by an operation from the ground, so that the third soil of the soil containing rod 2 is obtained. The housing portion is made to coincide with the soil introduction opening 9 of the tip part 3, and the soil housing rod 2 is pushed into the ground (c). Then, the soil is collected in the third soil container 4. Thereafter, the soil can be sampled at four depth positions having different depths by collecting the soil in the fourth soil accommodating portion and the fifth soil accommodating portion by the same operation.

このように、上記の土サンプリング装置１によれば、先端部品３の土導入用開口部９と土収容ロッド２の非土収容部５とを一致させた状態で地盤Ｇに貫入していき、採取予定の深度に達したら、そのままの状態で、即ち、土サンプリング装置１を地上に引き上げることなく、土収容ロッド２を回転させて、先端部品３の土導入用開口部９と土収容ロッド２の土収容部４とを一致させ、そして、下方に押し込めば、その深度の土が先端部品３の土導入用開口部９を通じて土収容ロッド２の土収容部４内に採取され、そのため、サンプリングを容易に行っていくことができる。特に、本実施形態では、土収容部４が複数備えられているので、深度の異なる複数深さ位置での土のサンプリングを作業容易に行っていくことができる。 Thus, according to the soil sampling apparatus 1 described above, the soil introduction opening 9 of the tip part 3 and the non-soil storage portion 5 of the soil storage rod 2 are made to penetrate into the ground G, When the depth to be collected is reached, the soil accommodating rod 2 is rotated as it is, that is, without lifting the soil sampling device 1 to the ground, and the soil introduction opening 9 and the soil accommodating rod 2 of the tip part 3 are rotated. If the soil storage portion 4 of the soil storage rod 4 is aligned and pushed downward, the soil at that depth is collected into the soil storage portion 4 of the soil storage rod 2 through the soil introduction opening 9 of the tip part 3, so that sampling is performed. Can be done easily. In particular, in the present embodiment, since a plurality of soil containers 4 are provided, it is possible to easily perform soil sampling at a plurality of depth positions with different depths.

なお、採取後は、土サンプリング装置１を地上に引き上げ、先端部品３を土収容ロッド２から外し、芯体７を土収容ロッド２の先端側に引き出せば、芯体７の基端部に備えられているプレート部７ｂが土収容部４内に採取された土を先端側に付勢していき、外に取り出すことができる。複数の土収容部に土が採取されている場合は、周壁に取出し口を備えた筒状治具を用いて、該筒状治具内に芯体７を差し込み、各土収容部の土を取出し口を通じて順次に取り出すようにするのもよい。 After the sampling, if the soil sampling device 1 is lifted to the ground, the tip part 3 is removed from the soil accommodation rod 2, and the core body 7 is pulled out to the distal end side of the soil accommodation rod 2, the base end portion of the core body 7 is prepared. The plate portion 7b that has been applied can urge the soil collected in the soil accommodating portion 4 to the tip side and take it out. When soil is collected in a plurality of soil accommodating portions, a cylindrical jig having an outlet on the peripheral wall is used, and the core body 7 is inserted into the cylindrical jig, and the soil in each soil accommodating portion is removed. It is also possible to sequentially take out through the takeout port.

以上に、本発明の実施形態を示したが、本発明はこれに限られるものではなく、発明思想を逸脱しない範囲で各種の変更が可能である。例えば、上記の実施形態では、土収容部４が４つ備えられた場合を示したが、その他の複数個であってもよいし、一つであってもよい。一つの場合であっても、先行掘りが不要で、サンプリング作業を容易にすることができる。 Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the case where four soil containers 4 are provided is shown, but other plural or one may be used. Even in one case, no prior digging is required and the sampling operation can be facilitated.

また、土収容ロッドの土収容部を外筒体と芯体とで形成する場合は、外筒体の内周部に形成した溝で土収容部を形成するようにしてもよいし、外筒体と芯体の両方に形成した溝で土収容部を形成するようにしてもよい。 Moreover, when forming the soil accommodating part of the soil accommodating rod with the outer cylinder and the core, the soil accommodating part may be formed by a groove formed in the inner peripheral part of the outer cylinder, You may make it form a soil accommodating part with the groove | channel formed in both the body and the core.

実施形態の土サンプリング装置を示す分解斜視図である。It is a disassembled perspective view which shows the soil sampling apparatus of embodiment. 図（イ）は土サンプリング装置の断面正面図、図（ロ）は図（イ）のＩ−Ｉ線断面矢視図、図（ハ）は土サンプリング装置の先端部の断面正面図、図（ニ）は図（ハ）のＩＩ−ＩＩ線断面図、図（ホ）は土サンプリング装置の先端部における動きを示す断面正面図である。Fig. (A) is a cross-sectional front view of the soil sampling device, Fig. (B) is a cross-sectional view taken along the line II of Fig. (B), Fig. (C) is a cross-sectional front view of the tip of the soil sampling device, (D) is a sectional view taken along the line II-II in FIG. (C), and (e) is a sectional front view showing the movement at the tip of the soil sampling device. 図（イ）及び図（ロ）は、図４（ハ）（ニ）と共に土のサンプリング方法を順次に示す説明図である。FIGS. 1A and 1B are explanatory diagrams sequentially showing a soil sampling method together with FIGS. 4C and 4D. 図（ハ）及び図（ニ）は、図３（イ）（ロ）と共に土のサンプリング方法を順次に示す説明図である。FIGS. (C) and (D) are explanatory diagrams sequentially showing a soil sampling method together with FIGS.

符号の説明Explanation of symbols

１…土サンプリング装置
２…土収容ロッド
３…先端部品
３ｄ…位置決め用凸
３ｅ…翼
４…土収容部
５…非土収容部
６…外筒体
７…芯体
７ａ…溝
７ｂ…プレート部（壁）
７ｆ…位置決め用凹
８…ピン
９…土導入用開口部 DESCRIPTION OF SYMBOLS 1 ... Soil sampling apparatus 2 ... Soil accommodating rod 3 ... Tip part 3d ... Positioning convex 3e ... Wing 4 ... Soil accommodating part 5 ... Non-soil accommodating part 6 ... Outer cylindrical body 7 ... Core body 7a ... Groove 7b ... Plate part ( wall)
7f: positioning recess 8 ... pin 9 ... soil introduction opening

Claims

土収容ロッドと先端部品とが備えられ、
土収容ロッドには、先端側に面して開口する土収容部と、非土収容部とが軸心回りに周設され、
先端部品は、土収容ロッドの先端部に相対回転可能に連結されると共に、軸心から偏心して先端側に面して開口する土導入用開口部を備え、
土導入用開口部は、先端部品と土収容ロッドとの相対回転変位により、土収容ロッドに備えられた土収容部と非土収容部の選択されたいずれかと一致するようになされていることを特徴とする土サンプリング装置。 A soil containing rod and a tip part are provided,
In the soil accommodation rod, a soil accommodation portion that opens facing the front end side and a non-soil accommodation portion are provided around the axis,
The tip component is connected to the tip portion of the soil accommodation rod so as to be relatively rotatable, and includes an opening for soil introduction that is eccentric from the axis and opens toward the tip side,
The soil introduction opening is made to coincide with the selected one of the soil accommodation part and the non-soil accommodation part provided in the soil accommodation rod by the relative rotational displacement between the tip part and the earth accommodation rod. Characteristic soil sampling device.

土収容部が複数備えられている請求項１に記載の土サンプリング装置。 The soil sampling apparatus according to claim 1, wherein a plurality of soil containers are provided.

先端部品に、土と係合し、土中で回転するのを阻止する翼が備えられている請求項１又は２に記載の土サンプリング装置。 The soil sampling device according to claim 1 or 2, wherein the tip part is provided with a wing that engages with the soil and prevents rotation in the soil.

先端部品と土収容ロッドとが軸方向に相対変位可能に連結されており、先端部品と土収容ロッドとに、先端部品の土導入開口部をロッドの土収容部及び非土収容部の各位置で位置決めする位置決め用の凹凸が備えられ、先端部品と土収容ロッドとを軸方向に変位させることで位置決め用の凹凸の係合、非係合の切換えを行うことができるようになされている請求項１乃至３のいずれか一に記載の土サンプリング装置。 The tip part and the soil accommodation rod are connected so as to be capable of relative displacement in the axial direction, and the soil introduction opening of the tip part is connected to the tip part and the soil accommodation rod at each position of the soil accommodation part and the non-soil accommodation part of the rod. The positioning unevenness for positioning is provided, and the engagement and disengagement of the positioning unevenness can be switched by displacing the tip part and the soil accommodation rod in the axial direction. Item 4. The soil sampling device according to any one of Items 1 to 3.

前記土収容ロッドは、外筒体と、該外筒体の内部に抜き差し可能に差し込まれて外筒体と一体回転するように設けられた芯体とを備え、
芯体の外周部及び／又は外筒体の内周部に軸線方向に延びるように設けられた溝によって、外筒体と芯体との間に土収容部が形成され、芯体に、土収容部の基端側を閉じる壁が備えられている請求項１乃至４のいずれか一に記載の土サンプリング装置。 The soil accommodation rod includes an outer cylindrical body and a core body that is detachably inserted into the outer cylindrical body so as to rotate integrally with the outer cylindrical body,
A groove provided in the outer peripheral portion of the core body and / or the inner peripheral portion of the outer cylinder body so as to extend in the axial direction forms a soil accommodating portion between the outer cylinder body and the core body, The soil sampling apparatus as described in any one of Claims 1 thru | or 4 provided with the wall which closes the base end side of a accommodating part.