JP2000054778A - Excavator - Google Patents
ExcavatorInfo
- Publication number
- JP2000054778A JP2000054778A JP10224646A JP22464698A JP2000054778A JP 2000054778 A JP2000054778 A JP 2000054778A JP 10224646 A JP10224646 A JP 10224646A JP 22464698 A JP22464698 A JP 22464698A JP 2000054778 A JP2000054778 A JP 2000054778A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- auger
- pressing
- ground
- press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地盤強度測定装置
並びに地盤試料採取装置を具備する掘削機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator having a ground strength measuring device and a ground sampling device.
【０００２】[0002]
【従来の技術】従来、構造物等を支持する地盤の強度を
測定するために、特開平１０−１８３５９１号に記載さ
れた地盤強度測定装置があり、同地盤強度測定装置は、
オーガロッドの下端に連設したオーガヘッドの上方位置
に、オーガロッドに沿って摺動可能に配置されている。2. Description of the Related Art Conventionally, in order to measure the strength of the ground supporting a structure or the like, there is a ground strength measuring apparatus described in Japanese Patent Application Laid-Open No. 10-183591.
It is slidably disposed along the auger rod at a position above an auger head connected to the lower end of the auger rod.
【０００３】[0003]
【発明が解決しようとする課題】ところが、地盤強度測
定装置がオーガロッドとは別体に配置されているため、
オーガロッドのガイド機構とは別に、地盤強度測定装置
のためのガイド機構、及び、地盤強度測定装置の測定コ
ーンを保護し、かつ、測定精度を高めるための開閉蓋や
同開閉蓋の開閉機構等を要して構造が複雑になるという
問題があった。However, since the ground strength measuring device is arranged separately from the auger rod,
Apart from the auger rod guide mechanism, a guide mechanism for the ground strength measuring device, an opening / closing lid for protecting the measuring cone of the ground strength measuring device and improving the measurement accuracy, and an opening / closing mechanism for the opening / closing lid And the structure becomes complicated.
【０００４】また、地盤強度測定装置がオーガヘッドの
上方に配置されているため、地盤強度測定時にはオーガ
ヘッドの回転を停止しなければならず、掘削しながらの
地盤強度の測定ができなかった。Further, since the ground strength measuring device is disposed above the auger head, the rotation of the auger head must be stopped when measuring the ground strength, and the ground strength cannot be measured while excavating.
【０００５】また、下方向に開口した有底筒形状の試料
採取容器を掘削孔底部の地盤に圧入し、同容器中に充填
された土壌を試料として採取する地盤試料採取装置があ
るが、この地盤試料採取装置も、オーガロッドとは別体
に構成されているため、構図が複雑になるという問題が
あり、更に、試料採取容器中に掘削土が侵入し、掘削孔
底部の土壌に混入して、試料としての価値が低下すると
いう問題がある。Further, there is a ground sampler which presses a downwardly opened bottomed cylindrical sample collection container into the ground at the bottom of the drilling hole and collects the soil filled in the container as a sample. The soil sampling device is also configured separately from the auger rod, which complicates the composition.In addition, excavated soil enters the sampling container and mixes with the soil at the bottom of the borehole. Therefore, there is a problem that the value as a sample is reduced.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明では、オ
ーガの下端にオーガロッドの基端を連動連結すると共
に、同オーガロッドの先端にオーガヘッドを連設して、
オーガロッドの回転により、地盤に掘削孔を形成すべく
構成した掘削機において、上記オーガロッドを中空軸に
形成し、同オーガロッドの内部に、地盤強度測定装置の
倒立略円錐形状の測定コーンを上下摺動自在に挿入した
ことを特徴とする掘削機を提供せんとするものである。Accordingly, in the present invention, a base end of an auger rod is interlockedly connected to a lower end of an auger, and an auger head is connected to a tip end of the auger rod.
In an excavator configured to form an excavation hole in the ground by rotation of the auger rod, the auger rod is formed in a hollow shaft, and an inverted cone-shaped measurement cone of a ground strength measuring device is provided inside the auger rod. An excavator characterized by being vertically slidably inserted is provided.
【０００７】また、次のような特徴を併せ有するもので
ある。[0007] The present invention also has the following features.
【０００８】上記地盤強度測定装置は、上記オーガロッ
ドの内部に押圧ロッドを上下摺動自在に挿通し、同押圧
ロッドの下端に上記測定コーンを連設し、押圧ロッドの
上端に押圧ロッドを下方向に押圧する押圧手段と、押圧
手段の押圧力を検出する押圧力検出手段と、測定コーン
の地盤への圧入量を検出する圧入量検出手段とを設けた
こと。In the above-mentioned ground strength measuring apparatus, a pressing rod is slidably inserted vertically into the auger rod, the measuring cone is continuously provided at the lower end of the pressing rod, and the pressing rod is placed at the upper end of the pressing rod. A pressing means for pressing in the direction, a pressing force detecting means for detecting a pressing force of the pressing means, and a press-fit amount detecting means for detecting a press-fit amount of the measuring cone into the ground.
【０００９】上記押圧ロッドを管状に形成して、同押圧
ロッドの内部を固化剤の通路とし、同通路を上記測定コ
ーンで開閉すべく構成したこと。The pressing rod is formed in a tubular shape, the inside of the pressing rod is used as a passage for the solidifying agent, and the passage is opened and closed by the measurement cone.
【００１０】オーガの下端にオーガロッドの基端を連動
連結すると共に、同オーガロッドの先端にオーガヘッド
を連設して、オーガロッドの回転により、地盤に掘削孔
を形成すべく構成した掘削機において、上記オーガロッ
ドの内部に、地盤試料採取装置の試料採取容器を上下摺
動自在に挿入したこと。An excavator in which a base end of an auger rod is connected to a lower end of the auger and an auger head is connected to a tip end of the auger rod to form a drill hole in the ground by rotation of the auger rod. In the above, the sample collection container of the ground sample collection device was vertically slidably inserted into the auger rod.
【００１１】地盤試料採取装置は、上記オーガロッドを
上下摺動自在に挿通した押圧ロッドの下端に下方向に開
口した有底筒形状の試料採取容器を連設し、押圧ロッド
の上端部に押圧ロッドを下方向に押圧する押圧手段を設
けたこと。[0011] In the ground sample collecting apparatus, a bottomed cylindrical sample collecting container having a downward opening is connected to a lower end of a pressing rod through which the auger rod is inserted so as to be slidable up and down. A pressing means for pressing the rod downward is provided.
【００１２】上記試料採取容器の下端開口部を膜体で閉
塞したこと。[0012] The lower end opening of the sampling container is closed with a membrane.
【００１３】上記押圧ロッドを管状に形成して、同押圧
ロッドの内部を固化剤の通路とし、前記試料採取容器
が、上記固化剤の注入・停止を制御するバルブを兼ねる
こと。The pressing rod is formed in a tubular shape, the inside of the pressing rod is used as a passage for the solidifying agent, and the sample collecting container also serves as a valve for controlling the injection and stop of the solidifying agent.
【００１４】[0014]
【発明の実施の形態】本発明の実施の形態は次の通りで
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are as follows.
【００１５】下端にオーガヘッドを連設したオーガロッ
ドを中空軸に形成し、その内部に上方から、下端に倒立
略円錐形状の測定コーンを連設し、上端に油圧シリンダ
よりなる押圧手段と、ロードセルよりなる押圧力検出手
段とを連設した押圧ロッドを上下摺動自在に挿通し、押
圧手段で測定コーンを、掘削中の掘削孔底部の地盤に圧
入し、この際の反力を押圧力検出手段で測定し、測定コ
ーンの圧入量と上記反力とから、オランダ式貫入試験方
法（ＪＩＳ Ａ１２２０−１９９５）に準じて掘削孔底
部の地盤の強度を測定するようにしている。An auger rod having an auger head connected to a lower end thereof is formed on a hollow shaft, and an inverted cone-shaped measuring cone is connected to the lower end of the hollow shaft from above, and a pressing means comprising a hydraulic cylinder is provided at the upper end. A pressing rod connected to a pressing force detecting means consisting of a load cell is inserted slidably up and down, and the measuring cone is pressed into the ground at the bottom of the excavation hole being excavated by the pressing means. The strength of the ground at the bottom of the excavation hole is measured according to the Dutch penetration test method (JIS A1220-1995) based on the amount of press-fit of the measuring cone and the above-mentioned reaction force by the detection means.
【００１６】また、上記押圧ロッドの下端に倒立略コッ
プ状の試料採取手段を連設して、押圧手段で試料採取手
段を掘削孔底部の地盤に圧入し、同試料採取手段の内部
に掘削孔底部の地盤の試料を充填し、押圧ロッドと試料
採取手段とをオーガロッドから上方に抜出して、上記試
料を採取するようにしている。In addition, an inverted cup-shaped sample collecting means is connected to the lower end of the pressing rod, and the pressing means press-fits the sample collecting means into the ground at the bottom of the drilling hole. A sample of the ground at the bottom is filled, and the pressing rod and the sampling means are withdrawn from the auger rod upward to collect the sample.
【００１７】[0017]
【実施例】本発明の実施例について図面を参照して説明
する。Embodiments of the present invention will be described with reference to the drawings.
【００１８】図１は、本発明に係る掘削機Ａを示してお
り、同掘削機Ａは、自走可能の重機本体１の前端部にリ
ーダー２を略鉛直に立設し、同リーダー２の前側面に略
矩形箱型のオーガ３を昇降自在に取付け、同オーガ３の
下端にオーガロッド４の上端をギヤボックス５を介して
連動連結し、同オーガロッド４の下端にオーガヘッド６
を連設して、オーガ３からの回転動力によりオーガヘッ
ド６を回転させながら、リーダー２に沿ってオーガヘッ
ド６を下降させて、地盤に断面略円形状の掘削孔を形成
するようにしている。図中、７は掘削土を掻出すための
スクリュー翼である。FIG. 1 shows an excavator A according to the present invention. In the excavator A, a leader 2 is erected substantially vertically on a front end of a self-propelled heavy machine main body 1, and A substantially rectangular box-shaped auger 3 is mounted on the front side so as to be able to move up and down, and the lower end of the auger 3 is operatively connected to the upper end of an auger rod 4 via a gear box 5.
The auger head 6 is lowered along the leader 2 while the auger head 6 is rotated by the rotational power from the auger 3 to form an excavation hole having a substantially circular cross section in the ground. . In the figure, 7 is a screw blade for scraping excavated soil.
【００１９】特に本実施例においては、上記オーガロッ
ド４を中空軸に形成し、その内部に地盤強度測定装置Ｂ
又は地盤試料採取装置Ｃの下部構造体を、上下摺動自在
に挿入できるようにしている。In particular, in this embodiment, the auger rod 4 is formed in a hollow shaft, and a ground strength measuring device B is provided therein.
Alternatively, the lower structure of the ground sample collecting device C can be vertically slidably inserted.
【００２０】地盤強度測定装置Ｂは、図２及び図３で示
すように、上記オーガロッド４とギヤボックス５とに管
状の押圧ロッド10を上下摺動自在に挿通し、同押圧ロッ
ド10の下端に倒立略円錐形状の測定コーン11を連設し、
同押圧ロッド10の上端に押圧手段12としての油圧シリン
ダ12' の下端を連結し、同油圧シリンダ12' の上端を、
押圧力検出手段13としてのロードセル13' を介し、オー
ガ３の天井内側面に連結している。As shown in FIGS. 2 and 3, the ground strength measuring device B has a tubular pressing rod 10 inserted through the auger rod 4 and the gear box 5 so as to be slidable up and down. An inverted cone-shaped measuring cone 11 is connected to the
The lower end of a hydraulic cylinder 12 'as the pressing means 12 is connected to the upper end of the pressing rod 10, and the upper end of the hydraulic cylinder 12' is
It is connected to the inner surface of the ceiling of the auger 3 via a load cell 13 'as a pressing force detecting means 13.
【００２１】また、押圧ロッド10の上端部に３個の圧入
量測定突起14a,14b,14c を、それぞれ高さを異ならせて
突設し、同圧入量測定突起14a,14b,14c に接触するよう
に圧入量測定スイッチ15を設けて圧入量検出手段16を構
成しており、上記圧入量測定突起14a,14b,14c の位置
は、測定コーン11のオーガロッド４に対する高さと対応
しており、最下部に位置する圧入量測定突起14a は、図
２で示すように、測定コーン11の上下作動範囲中、測定
コーン11が最高の位置h1にある時に圧入量測定スイッチ
15に接触し、中間の高さに位置する圧入量測定突起14b
は、測定コーン11の下端とオーガヘッド６下端とが同一
高さ、即ち、測定コーン11の下端が未掘削の地盤Ｇの表
面に接した位置h2にある時に圧入量測定スイッチ15に接
触し、最高位置の圧入量測定突起14c は、測定コーン11
が最低の位置h3にある時に圧入量測定スイッチ15に接触
するようにしている。図中、17は測定コーン11の上下作
動をガイドし、かつ、オーガロッド４の内周面の摩耗を
防止するためのラビングチューブである。Further, three press-fit amount measuring protrusions 14a, 14b, 14c are provided on the upper end of the pressing rod 10 with different heights, and come into contact with the press-fit amount measuring protrusions 14a, 14b, 14c. Thus, the press-fit amount measuring switch 15 is provided to constitute the press-fit amount detecting means 16, and the positions of the press-fit amount measuring protrusions 14a, 14b, and 14c correspond to the height of the measuring cone 11 with respect to the auger rod 4, As shown in FIG. 2, when the measuring cone 11 is at the highest position h1 in the vertical operating range of the measuring cone 11, the press-fitting amount measuring switch 14 located at the lowermost position is used.
15 and press-fit amount measurement protrusion 14b located at an intermediate height
The lower end of the measuring cone 11 and the lower end of the auger head 6 are at the same height, that is, when the lower end of the measuring cone 11 is at the position h2 in contact with the surface of the undigged ground G, it contacts the press-fit amount measuring switch 15, The press-fit amount measuring projection 14c at the highest position is
Is brought into contact with the press-fit amount measuring switch 15 when it is at the lowest position h3. In the figure, reference numeral 17 denotes a rubbing tube for guiding the vertical movement of the measuring cone 11 and for preventing the inner peripheral surface of the auger rod 4 from being worn.
【００２２】かかる構成により、掘削機Ａによる掘削作
業中、掘削孔が所望の深さに達すると、上記油圧シリン
ダ12' を伸張作動させ、押圧ロッド10下端の測定コーン
11を下方向に押圧して、同測定コーン11を掘削孔底部の
地盤Ｇに圧入し、この時の測定コーン11の押圧力と圧入
量とを、ロードセル13' と圧入量測定スイッチ15とで検
出し、オランダ式貫入試験方法（ＪＩＳ Ａ１２２０−
１９９５）に準じて、掘削孔底部の地盤Ｇの強度を測定
することができる。With this configuration, when the drilling hole reaches a desired depth during the excavating operation by the excavator A, the hydraulic cylinder 12 'is extended and the measuring cone at the lower end of the pressing rod 10 is moved.
11 is pressed downward, the measuring cone 11 is pressed into the ground G at the bottom of the excavation hole, and the pressing force and the pressing amount of the measuring cone 11 at this time are measured by the load cell 13 ′ and the pressing amount measuring switch 15. Detected and the Dutch penetration test method (JIS A1220-
1995), the strength of the ground G at the bottom of the excavation hole can be measured.
【００２３】このように、測定コーン11がオーガロッド
４中に収納されているので、地盤強度測定装置Ｂを具備
する掘削機Ａをコンパクトに構成することができる。As described above, since the measuring cone 11 is accommodated in the auger rod 4, the excavator A including the ground strength measuring device B can be made compact.
【００２４】図４は、上記測定コーン11の押圧力と、測
定コーン11の位置h1,h2,h3との関係を示しており、位置
h1−h2間では、押圧力に対する圧入量の増加が大きい
が、オーガロッド４の内周面と測定コーン11との摩擦
等、地盤強度とは関係のない抵抗を示しており、h2−h3
間は、未掘削の地盤Ｇに測定コーン11を圧入する際の抵
抗であって、掘削孔底部の地盤強度に関係する値を示し
ている。そこで、本実施例では、上記h1−h2間の押圧力
と圧入量との関係を差し引いて、h2−h3間の押圧力と圧
入量との関係から地盤Ｇの強度を測定するようにしてい
る。FIG. 4 shows the relationship between the pressing force of the measuring cone 11 and the positions h1, h2, h3 of the measuring cone 11,
Between h1 and h2, the press-in amount with respect to the pressing force greatly increases, but the resistance between the inner peripheral surface of the auger rod 4 and the measuring cone 11 is not related to the ground strength, such as friction, and h2-h3
The interval is the resistance when the measurement cone 11 is pressed into the unexcavated ground G, and indicates a value related to the ground strength at the bottom of the excavation hole. Therefore, in the present embodiment, the strength of the ground G is measured from the relationship between the pressing force between h2 and h3 and the press-fitting amount by subtracting the relationship between the pressing force between h1 and h2 and the press-fitting amount. .
【００２５】また、上記地盤強度測定装置Ｂは、セメン
トミルク等の土壌固化剤を注入する注入装置を兼ねてお
り、図５で示すように、押圧ロッド10を管状に形成して
セメントミルク等の固化剤の通路20とし、同押圧ロッド
10の上端部をスイベル21を介して固化剤を高圧で吐出す
る固化剤圧入装置（図示せず）に連通連結し、同通路20
の下端を測定コーン11で開閉自在に閉塞している。The ground strength measuring device B also serves as an injecting device for injecting a soil hardening agent such as cement milk, as shown in FIG. The passage 20 for the solidifying agent
The upper end of 10 is connected through a swivel 21 to a solidifying agent press-in device (not shown) that discharges the solidifying agent at a high pressure.
Is closed by a measuring cone 11 so as to be freely opened and closed.
【００２６】即ち、押圧ロッド10の下端開口部22に略円
錐形状に縮径した弁座23を設け、同弁座23の上部内面に
ガイド体24を架設すると共に、上記測定コーン11の上部
に略円錐形状の弁体25を形成し、同弁体25の頂部に立設
したガイド棒26を上記ガイド体24に上下摺動自在に挿通
し、ガイド棒26上端部とガイド体24上面との間にスプリ
ング27を介設し、同スプリング27の付勢により測定コー
ン11で押圧ロッド10の下端開口部22を閉塞しており、押
圧ロッド10中に圧入された固化剤の圧力により弁座23と
弁体25とを離隔させて、掘削孔中に固化剤を注入できる
ようにしている。なお、地盤強度測定時には、押圧ロッ
ド10からの押圧力は、弁座23と弁体25との当接を介して
測定コーン11に伝達される。That is, a valve seat 23 whose diameter is reduced to a substantially conical shape is provided in the lower end opening 22 of the pressing rod 10, a guide body 24 is erected on the upper inner surface of the valve seat 23, and A substantially conical valve body 25 is formed, and a guide rod 26 erected on the top of the valve body 25 is vertically slidably inserted through the guide body 24, and the upper end of the guide rod 26 and the upper surface of the guide body 24 A spring 27 is interposed therebetween, and the lower end opening 22 of the pressing rod 10 is closed by the measuring cone 11 by the bias of the spring 27, and the valve seat 23 is pressed by the pressure of the solidifying agent pressed into the pressing rod 10. And the valve body 25 are separated from each other so that the solidifying agent can be injected into the borehole. At the time of the ground strength measurement, the pressing force from the pressing rod 10 is transmitted to the measuring cone 11 via the contact between the valve seat 23 and the valve body 25.
【００２７】地盤試料採取装置Ｃは、図６及び図７で示
すように、前記と略同様に構成した押圧ロッド10の先端
に試料採取容器30を連設して、掘削孔底部の地盤Ｇから
試料を採取するようにしている。As shown in FIG. 6 and FIG. 7, the ground sample collecting device C has a sample collecting container 30 connected to the tip of the pressing rod 10 having substantially the same structure as described above, and the ground sample G is formed from the ground G at the bottom of the drilling hole. I am trying to collect a sample.
【００２８】上記試料採取容器30は、上端を天井壁31で
閉塞した略円筒形状に形成されており、同試料採取容器
30の下端部内周面に内径を縮径した縮径部32を形成し、
下端開口部を軟質塩化ビニール等を素材とした膜体33で
閉塞している。The sampling container 30 is formed in a substantially cylindrical shape whose upper end is closed by a ceiling wall 31.
Forming a reduced diameter portion 32 with a reduced inner diameter on the inner peripheral surface of the lower end portion of 30,
The lower end opening is closed by a film body 33 made of soft vinyl chloride or the like.
【００２９】かかる構成により、掘削孔が所望の深さに
達した際に、油圧シリンダ12' を伸張作動させて試料採
取容器30を掘削孔底部の地盤Ｇ中に圧入すると、それま
で、試料採取容器30内部への掘削土の侵入を阻止してい
た膜体33が破れ、掘削孔底部の地盤Ｇを構成する土壌が
試料採取容器30中に充填され、この土壌は試料採取容器
30下端部内周面の縮径部32で支持されて脱落が防止され
る。With this configuration, when the drilling hole reaches a desired depth, the hydraulic cylinder 12 'is extended and the sampling container 30 is pressed into the ground G at the bottom of the drilling hole. The membrane 33 that has prevented the excavated soil from entering the inside of the container 30 is torn, and the soil constituting the ground G at the bottom of the excavation hole is filled in the sample collection container 30.
30 is supported by the reduced diameter portion 32 on the inner peripheral surface of the lower end portion, thereby preventing falling off.
【００３０】そして、オーガロッド４を掘削孔から抜出
した際に、試料採取容器30中に充填された土壌を試料と
して採取することができる。When the auger rod 4 is pulled out of the excavation hole, the soil filled in the sampling container 30 can be sampled.
【００３１】このように、試料採取容器30がオーガロッ
ド４中に収納されているので、地盤試料採取装置Ｃを具
備する掘削機Ａをコンパクトに構成することができる。As described above, since the sampling container 30 is accommodated in the auger rod 4, the excavator A having the ground sampling device C can be made compact.
【００３２】特に、上記膜体33が、試料採取容器30が掘
削孔底部の未掘削の地盤Ｇに圧入されるまで、掘削土の
同試料採取容器30内部への侵入を阻止しているので、掘
削孔底部の未掘削の地盤Ｇを構成する土壌だけを試料と
して採取して、試料の価値を高めることができる。In particular, since the film body 33 prevents the excavated soil from entering the inside of the sampling container 30 until the sampling container 30 is pressed into the unexcavated ground G at the bottom of the drilling hole. Only the soil constituting the unexcavated ground G at the bottom of the excavation hole can be collected as a sample to enhance the value of the sample.
【００３３】また、上記地盤試料採取装置Ｃは、固化剤
の注入装置を兼ねており、図７で示すように、押圧ロッ
ド10の内部に形成した通路20の下端を試料採取容器30で
開閉自在に閉塞している。The ground sample collecting device C also serves as a solidifying agent injection device. As shown in FIG. 7, the lower end of a passage 20 formed inside the pressing rod 10 can be opened and closed by a sample collecting container 30. Is closed.
【００３４】即ち、押圧ロッド10の下端開口部22に前記
と同一構成の弁座23を設け、同弁座23の上部内面にガイ
ド体24を架設すると共に、上記地盤試料採取装置Ｃの天
井壁31の上面に略円錐形状の弁体25を形成し、同弁体25
の頂部に立設したガイド棒26を上記ガイド体24に上下摺
動自在に挿通し、ガイド棒26上端部とガイド体24上面と
の間にスプリング27を介設し、同スプリング27の付勢に
より測定コーン11で押圧ロッド10の下端開口部22を閉塞
しており、押圧ロッド10中に圧入された固化剤の圧力に
より弁座23と弁体25とを離隔させて、掘削孔中に固化剤
を注入できるようにしている。なお、試料採取時の押圧
ロッド10からの押圧力は、弁座23と弁体25との当接を介
して試料採取容器30に伝達される。That is, a valve seat 23 having the same structure as described above is provided in the lower end opening 22 of the pressing rod 10, a guide body 24 is erected on the upper inner surface of the valve seat 23, and the ceiling wall of the ground sample collecting device C is provided. A substantially conical valve element 25 is formed on the upper surface of the valve element 31.
A guide rod 26 erected at the top of the guide rod 24 is vertically slidably inserted into the guide body 24, and a spring 27 is interposed between the upper end of the guide rod 26 and the upper surface of the guide body 24. The lower end opening 22 of the pressing rod 10 is closed by the measuring cone 11, and the valve seat 23 and the valve body 25 are separated by the pressure of the solidifying agent pressed into the pressing rod 10, and solidified in the drilling hole. The medicine can be injected. The pressing force from the pressing rod 10 at the time of sampling is transmitted to the sampling container 30 via the contact between the valve seat 23 and the valve body 25.
【００３５】[0035]
【発明の効果】本発明によれば次のような効果を得るこ
とができる。According to the present invention, the following effects can be obtained.
【００３６】請求項１記載の発明では、オーガの下端に
オーガロッドの基端を連動連結すると共に、同オーガロ
ッドの先端にオーガヘッドを連設して、オーガロッドの
回転により、地盤に掘削孔を形成すべく構成した掘削機
において、上記オーガロッドを中空軸に形成し、同オー
ガロッドの内部に、地盤強度測定装置の倒立略円錐形状
の測定コーンを上下摺動自在に挿入したことによって、
オーガロッドの内周面が測定コーンのガイドとして作用
するので、別途ガイド機構を要せず構造が簡単・コンパ
クトになり、更に、測定コーンとオーガヘッドとの干渉
がないため、掘削作業中でも地盤強度の測定を行うこと
ができる。According to the first aspect of the present invention, the base end of the auger rod is connected to the lower end of the auger, and the auger head is connected to the tip of the auger rod. In the excavator configured to form the above, by forming the auger rod in a hollow shaft, inside the same auger rod, by inserting an inverted cone-shaped measurement cone of the ground strength measuring device slidably up and down,
Since the inner peripheral surface of the auger rod acts as a guide for the measuring cone, the structure is simple and compact without the need for a separate guide mechanism, and there is no interference between the measuring cone and the auger head. Can be measured.
【００３７】請求項２記載の発明では、上記地盤強度測
定装置は、上記オーガロッドの内部に押圧ロッドを上下
摺動自在に挿通し、同押圧ロッドの下端に上記測定コー
ンを連設し、押圧ロッドの上端に押圧ロッドを下方向に
押圧する押圧手段と、押圧手段の押圧力を検出する押圧
力検出手段と、測定コーンの地盤への圧入量を検出する
圧入量検出手段とを設けたことによって、押圧ロッド等
に作用する掘削土やオーガロッドとの摩擦抵抗等を差し
引いて、正確に掘削孔底部の地盤強度を測定することが
できる。According to the second aspect of the present invention, in the ground strength measuring device, a pressing rod is slidably inserted vertically into the auger rod, and the measuring cone is continuously provided at a lower end of the pressing rod. At the upper end of the rod, a pressing means for pressing the pressing rod downward, a pressing force detecting means for detecting a pressing force of the pressing means, and a press-fit amount detecting means for detecting a press-fit amount of the measuring cone into the ground are provided. Thus, the ground strength at the bottom of the excavation hole can be accurately measured by subtracting the frictional resistance against the excavated soil or the auger rod acting on the pressing rod or the like.
【００３８】請求項３記載の発明では、上記押圧ロッド
を管状に形成して、同押圧ロッドの内部を固化剤の通路
とし、同通路を上記測定コーンで開閉すべく構成したこ
とによって、地盤強度測定装置を固化剤注入装置に兼用
させて構造を簡単・コンパクトにすることができる。According to a third aspect of the present invention, the pressure rod is formed in a tubular shape, the inside of the pressure rod is used as a passage for the solidifying agent, and the passage is opened and closed by the measurement cone. The structure can be made simple and compact by using the measuring device also as the solidifying agent injection device.
【００３９】請求項４記載の発明では、オーガの下端に
オーガロッドの基端を連動連結すると共に、同オーガロ
ッドの先端にオーガヘッドを連設して、オーガロッドの
回転により、地盤に掘削孔を形成すべく構成した掘削機
において、上記オーガロッドの内部に、地盤試料採取装
置の試料採取容器を上下摺動自在に挿入したことによっ
て、オーガロッドの内周面が試料採取容器のガイドとし
て作用するので、別途ガイド機構を要せず構造が簡単・
コンパクトになり、更に、試料採取容器とオーガヘッド
との干渉がないため、掘削作業中でも地盤強度の測定を
行うことができる。According to the fourth aspect of the present invention, the base end of the auger rod is connected to the lower end of the auger, and the auger head is connected to the tip of the auger rod. In the excavator configured to form the above, the inner peripheral surface of the auger rod acts as a guide for the sample collection container by inserting the sample collection container of the ground sample collection device vertically slidably inside the auger rod. The structure is simple without a separate guide mechanism.
Since it is compact and there is no interference between the sampling container and the auger head, the ground strength can be measured even during excavation work.
【００４０】請求項５記載の発明では、地盤試料採取装
置は、上記オーガロッドを上下摺動自在に挿通した押圧
ロッドの下端に下方向に開口した有底筒形状の試料採取
容器を連設し、押圧ロッドの上端部に押圧ロッドを下方
向に押圧する押圧手段を設けたことによって、掘削孔底
部の地盤の土壌を試料として採取することができる。According to a fifth aspect of the present invention, in the ground sample collecting apparatus, a bottomed cylindrical sample collecting container which is opened downward is continuously provided at the lower end of the pressing rod through which the auger rod is slidably inserted vertically. By providing the pressing means for pressing the pressing rod downward at the upper end of the pressing rod, soil on the ground at the bottom of the excavation hole can be collected as a sample.
【００４１】請求項６記載の発明では、上記試料採取容
器の下端開口部を膜体で閉塞したことによって、掘削孔
底部の地盤の土壌だけを採取して、試料としての価値を
高めることができる。According to the sixth aspect of the present invention, since the lower end opening of the sampling container is closed with a membrane, only the soil at the bottom of the excavation hole can be collected to enhance the value as a sample. .
【００４２】請求項７記載の発明では、上記押圧ロッド
を管状に形成して、同押圧ロッドの内部を固化剤の通路
とし、前記試料採取容器が、上記固化剤の注入・停止を
制御するバルブを兼ねることによって、地盤試料採取装
置を固化剤注入装置に兼用させて構造を簡単・コンパク
トにすることができる。In the invention according to claim 7, the pressing rod is formed in a tubular shape, the inside of the pressing rod is used as a passage for the solidifying agent, and the sample collection container is a valve for controlling the injection and stop of the solidifying agent. The structure can be made simple and compact by using the ground sample collecting device also as the solidifying agent injection device.
【図１】本発明に係る掘削機の側面図。FIG. 1 is a side view of an excavator according to the present invention.
【図２】地盤強度測定装置の構成を示す一部断面側面
図。FIG. 2 is a partial cross-sectional side view showing a configuration of a ground strength measuring device.
【図３】測定コーンの側面図。FIG. 3 is a side view of a measurement cone.
【図４】押圧力と圧入量との関係を示すグラフ。FIG. 4 is a graph showing a relationship between a pressing force and a press-fit amount.
【図５】測定コーンと押圧ロッドの断面側面図。FIG. 5 is a sectional side view of a measurement cone and a pressing rod.
【図６】試料採取容器の一部断面側面図FIG. 6 is a partial cross-sectional side view of a sample collection container.
【図７】試料採取容器と押圧ロッドの断面側面図。FIG. 7 is a cross-sectional side view of a sample collection container and a pressing rod.
Ａ 掘削機 Ｂ 地盤強度測定装置 Ｃ 地盤試料採取装置 ３ オーガ ４ オーガロッド ６ オーガヘッド 10 押圧ロッド 11 測定コーン 12 押圧手段 13 押圧力検出手段 16 圧入量検出手段 20 通路 30 試料採取容器 33 膜体 Reference Signs List A excavator B ground strength measuring device C ground sample collecting device 3 auger 4 auger rod 6 auger head 10 pressing rod 11 measuring cone 12 pressing means 13 pressing force detecting means 16 press-fitting amount detecting means 20 passage 30 sample collecting container 33 membrane
Claims (7)
基端を連動連結すると共に、同オーガロッド(4) の先端
にオーガヘッド(6) を連設して、オーガロッド(4) の回
転により、地盤に掘削孔を形成すべく構成した掘削機
(A) において、 上記オーガロッド(4) を中空軸に形成し、同オーガロッ
ド(4) の内部に、地盤強度測定装置(B) の倒立略円錐形
状の測定コーン(11)を上下摺動自在に挿入したことを特
徴とする掘削機。An auger rod (4) is connected to a lower end of an auger (3) in an interlocking manner, and an auger head (6) is connected to a tip of the auger rod (4). Excavator configured to form an excavation hole in the ground by rotating
In (A), the auger rod (4) is formed in a hollow shaft, and the inverted cone-shaped measuring cone (11) of the ground strength measuring device (B) is slid up and down inside the auger rod (4). An excavator characterized by being freely inserted.
ガロッド(4) の内部に押圧ロッド(10)を上下摺動自在に
挿通し、同押圧ロッド(10)の下端に上記測定コーン(11)
を連設し、押圧ロッド(10)の上端に押圧ロッド(10)を下
方向に押圧する押圧手段(12)と、押圧手段(12)の押圧力
を検出する押圧力検出手段(13)と、測定コーン(11)の地
盤への圧入量を検出する圧入量検出手段(16)とを設けた
ことを特徴とする請求項１記載の掘削機。2. The ground strength measuring device (B) includes a pressing rod (10) inserted slidably up and down inside the auger rod (4), and a measuring cone at a lower end of the pressing rod (10). (11)
A pressing means (12) for pressing the pressing rod (10) downward at the upper end of the pressing rod (10), and a pressing force detecting means (13) for detecting the pressing force of the pressing means (12). The excavator according to claim 1, further comprising a press-fit amount detecting means (16) for detecting a press-fit amount of the measuring cone (11) into the ground.
同押圧ロッド(10)の内部を固化剤の通路(20)とし、同通
路(20)を上記測定コーン(11)で開閉すべく構成したこと
を特徴とする請求項１又は２記載の掘削機。3. The pressure rod (10) is formed in a tubular shape,
The excavator according to claim 1 or 2, wherein the inside of the pressing rod (10) is a passage (20) for a solidifying agent, and the passage (20) is configured to be opened and closed by the measuring cone (11). .
基端を連動連結すると共に、同オーガロッド(4) の先端
にオーガヘッド(6) を連設して、オーガロッド(4) の回
転により、地盤に掘削孔を形成すべく構成した掘削機
(A) において、上記オーガロッド(4) の内部に、地盤試
料採取装置(C) の試料採取容器(30)を上下摺動自在に挿
入したことを特徴とする掘削機。4. An auger rod (4) is connected to a lower end of the auger (3) in an interlocking manner, and an auger head (6) is connected to a tip of the auger rod (4). Excavator configured to form an excavation hole in the ground by rotating
An excavator according to (A), wherein a sampling container (30) of a ground sampling device (C) is vertically slidably inserted into the auger rod (4).
ッド(4) を上下摺動自在に挿通した押圧ロッド(10)の下
端に下方向に開口した有底筒形状の試料採取容器(30)を
連設し、押圧ロッド(10)の上端部に押圧ロッド(10)を下
方向に押圧する押圧手段(12)を設けたことを特徴とする
請求項４記載の掘削機。5. A ground sample collection device (C) comprising: a bottomed cylindrical sample collection container (C) having a downward opening at the lower end of a pressing rod (10) through which the auger rod (4) is vertically slidably inserted. The excavator according to claim 4, characterized in that an extruder (30) is provided continuously, and a pressing means (12) for pressing the pressing rod (10) downward is provided at the upper end of the pressing rod (10).
体(33)で閉塞したことを特徴とする請求項４又は５記載
の掘削機。6. The excavator according to claim 4, wherein a lower end opening of the sampling container (30) is closed by a membrane (33).
同押圧ロッド(10)の内部を固化剤の通路(20)とし、前記
試料採取容器(30)が、上記固化剤の注入・停止を制御す
るバルブを兼ねることを特徴とする請求項４〜６のいず
れかに記載の掘削機。7. The pressing rod (10) is formed in a tubular shape,
The inside of the pressing rod (10) is a passage for a solidifying agent (20), and the sample collection container (30) also serves as a valve for controlling injection and stop of the solidifying agent. The excavator according to any one of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10224646A JP3062478B2 (en) | 1998-08-07 | 1998-08-07 | Excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10224646A JP3062478B2 (en) | 1998-08-07 | 1998-08-07 | Excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000054778A true JP2000054778A (en) | 2000-02-22 |
| JP3062478B2 JP3062478B2 (en) | 2000-07-10 |
Family
ID=16816991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10224646A Expired - Fee Related JP3062478B2 (en) | 1998-08-07 | 1998-08-07 | Excavator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3062478B2 (en) |
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