JPH0694770B2 - Excavation device for manhole holes in soft ground and excavation method using the device - Google Patents
Excavation device for manhole holes in soft ground and excavation method using the deviceInfo
- Publication number
- JPH0694770B2 JPH0694770B2 JP1245705A JP24570589A JPH0694770B2 JP H0694770 B2 JPH0694770 B2 JP H0694770B2 JP 1245705 A JP1245705 A JP 1245705A JP 24570589 A JP24570589 A JP 24570589A JP H0694770 B2 JPH0694770 B2 JP H0694770B2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- auger
- drive shaft
- excavation
- hole
- 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.)
- Expired - Lifetime
Links
Landscapes
- Earth Drilling (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] この発明は、軟弱地盤に於けるマンホール用穴の掘削装
置及びその装置を用いた掘削方法に関するものであり、
特に、マンホール用穴の掘削日数を短縮すると共に残土
及び埋戻しの土量を減少させ、施工コストを低減するた
めの軟弱地盤に於けるマンホール用穴の掘削装置及びそ
の装置を用いた掘削方法に関するものである。TECHNICAL FIELD The present invention relates to an excavating device for a manhole hole in soft ground and an excavating method using the device.
In particular, the present invention relates to an excavating device for a manhole hole in soft ground for reducing the number of days for excavating a manhole hole, reducing the amount of remaining soil and backfilling soil, and reducing construction costs, and an excavation method using the device. It is a thing.
[従来の技術] 従来は、上下水道の配管のためのマンホールを設置する
ときには、作業員がマンホール用の穴を掘削するか、或
はパワーシヨベルカーにて掘削していた。[Prior Art] Conventionally, when installing a manhole for piping for water and sewerage, an operator digs a hole for a manhole or a power shovel car.
[発明が解決しようとする課題] 作業員が円形のマンホール用の穴を掘削する際には、該
穴に砂利が崩落することを防止するため、該穴の壁面を
傾斜させて掘削する必要があり、又、小径なマンホール
を埋設するときには作業員の作業スペースが必要である
ので、マンホールよりも掘削穴が大となる。[Problems to be Solved by the Invention] When an operator excavates a circular manhole, it is necessary to incline the wall surface of the hole in order to prevent the gravel from collapsing into the hole. In addition, since a work space for a worker is required when burying a small-diameter manhole, the excavation hole is larger than the manhole.
一方、パワーシヨベルカーで掘削する際には、マンホー
ル用の穴を方形状に形成され、前述の場合と同様壁面を
傾斜させる必要があるので掘削穴が大となつていた。
又、いづれの場合に於ても、掘削穴の壁面に矢板等を立
設していわゆる「土留め」をする必要が生じ、その後マ
ンホールを該穴に収容し、矢板等を取り外して埋戻作業
を行うことにより該マンホールを設置していた。依っ
て、マンホールの設置作業に多大な時間と労力を要し、
更に、狭隘な道路に於ては交通を著しく妨げることにな
る。又、掘削穴が大となることから残土と埋戻しの土量
が増大し、施工コストを引き上げる原因となつていた。On the other hand, when excavating with a power shovel car, holes for manholes are formed in a rectangular shape, and it is necessary to incline the wall surface as in the case described above, so the excavation holes are large.
In either case, it becomes necessary to stand a sheet pile or the like on the wall surface of the excavation hole for so-called "earth retaining", and then store the manhole in the hole and remove the sheet pile or the like to backfill. The manhole was installed by carrying out. Therefore, it takes a lot of time and effort to install the manhole,
In addition, traffic will be significantly impeded on narrow roads. In addition, the size of the excavated hole increases the amount of remaining soil and the amount of backfilled soil, which is a cause of raising the construction cost.
そこで、軟弱な地盤に於てもマンホール用の穴の掘削作
業を簡素化し、且つ、マンホールと略同形の穴にて該マ
ンホールを設置できるようにして残土や埋戻しの土量を
減少させ、作業性の向上や工期の短縮及びコストを低減
すると共に、交通の妨げを改善するために解決せられる
べき技術的課題が生じてくるのであり、本発明は該課題
を解決することを目的とする。Therefore, even on soft ground, excavation work for manhole holes is simplified, and the manhole can be installed in a hole of approximately the same shape as the manhole to reduce the amount of residual soil and backfill soil. The present invention has an object to solve the technical problems that should be solved in order to improve the property, shorten the construction period, reduce the cost, and improve the obstruction of traffic.
[課題を解決するための手段] この発明は、上記目的を達成するために提案せられたも
のであり、パワーシヨベルカーのアームに揺動自在にモ
ータを垂設し、該モータの駆動軸に駆動シヤフトを下方
へ連設すると共に、該駆動シヤフトの任意の位置にて脱
着自在な端板と、該端板に脱着自在な円筒状のカバーと
を設け、更に、該カバー内に収容可能なオーガのシヤフ
トに前記駆動シヤフトを挿入して、該オーガを駆動シヤ
フトの任意の位置に取り付けられるように構成したこと
を特徴とする軟弱地盤に於けるマンホール用穴の掘削装
置及び、前記オーガをカバー内に収容して該オーガを前
記駆動シヤフトの所定の位置に取り付け、前記モータの
駆動により該オーガを回転させて一定の深度まで掘削
し、次にオーガを前記カバーより上方へ引き抜き、該オ
ーガ上の残土を掘削穴より排除した後、該カバーを前記
端板を介して駆動シヤフトに取り付け、モータを駆動し
て該カバーを回転し、前記オーガの掘削と略同一深度ま
で該カバーを進行させ、順次所定の深度まで掘削するこ
とを特徴とする軟弱地盤に於けるマンホール用穴の掘削
装置を用いた掘削方法を提供せんとするものである。[Means for Solving the Problems] The present invention has been proposed in order to achieve the above-described object, and a motor is vertically installed on an arm of a power shovel car so as to be swingable, and a drive shaft of the motor. The drive shaft is continuously connected to the lower part of the drive shaft, and an end plate that can be attached / detached at an arbitrary position of the drive shaft and a cylindrical cover that can be attached / detached to the end plate are further provided and can be accommodated in the cover. The driving shaft is inserted into the shaft of a different auger, and the auger is constructed so that the auger can be attached to any position of the driving shaft, and a drilling device for a manhole hole in soft ground, and the auger. It is housed in a cover and the auger is attached to the drive shaft at a predetermined position, the motor is driven to rotate the auger to a certain depth, and then the auger is pulled above the cover. After removing the remaining soil on the auger from the excavation hole, the cover is attached to the drive shaft via the end plate, the motor is driven to rotate the cover, and the depth is about the same as the excavation of the auger. It is intended to provide an excavation method using a device for excavating a hole for a manhole in soft ground, characterized by advancing a cover and sequentially excavating to a predetermined depth.
[作用] この発明は、パワーシヨベルカーのアームに揺動自在に
モータを取り付け、該モータの駆動軸に駆動シヤフトを
連結している。そして、該駆動シヤフトの任意の位置に
円筒状のカバーと、オーガとを取り付けられるように構
成している。そこで、軟弱地盤に於て、マンホール用の
穴を掘削する際には、先ず、オーガにより一定の深さま
で掘削し、次に残土を排除した後、カバーを回転させて
オーガの掘削した同一の深さまで該カバーを進行させ
る。そして、順次所定の深度まで掘削する。然るときに
は、前記カバーが土砂をシールドし、いわゆる土留めの
作用を為す。又、カバーとオーガとを交互に回転させる
ので、モータのトルクを小として該モータのコストを低
減することができると共に、可及的に小型のパワーシヨ
ベルカーに設置することができる。更に、人手を要さず
掘削作業を機械化して該作業を簡素化することができる
ので、以て工期を短縮し、又、施工コストの低減を図る
ことができる。そして、該掘削穴は略マンホールと同径
であることから残土及び埋戻しの土量が減少する。更
に、工事スペースも小となり、前述の工期短縮と相俟つ
て該工事による交通の妨げを改善することができる。[Operation] In the present invention, the motor of the power shovel car is swingably attached to the arm, and the drive shaft of the motor is connected to the drive shaft. Then, the cylindrical cover and the auger can be attached at arbitrary positions of the drive shaft. Therefore, when excavating a manhole hole in soft ground, first excavate to a certain depth with an auger, then remove residual soil, and then rotate the cover to the same depth excavated by the auger. Now proceed with the cover. Then, excavation is sequentially performed to a predetermined depth. In that case, the cover shields the earth and sand, and functions as a so-called earth retaining. Further, since the cover and the auger are rotated alternately, the torque of the motor can be reduced to reduce the cost of the motor, and the cover can be installed in a power shovel car that is as small as possible. Further, since the excavation work can be mechanized and the work can be simplified without requiring manpower, the construction period can be shortened and the construction cost can be reduced. Since the excavation hole has substantially the same diameter as the manhole, the amount of remaining soil and backfill soil is reduced. Further, the construction space becomes small, and in combination with the shortening of the construction period mentioned above, the obstruction of traffic due to the construction can be improved.
[実施例] 以下、この発明の一実施例を別紙添付図面の第1図乃至
第4図に従って詳述する。[Embodiment] An embodiment of the present invention will be described below in detail with reference to FIGS. 1 to 4 of the attached drawings.
図に於て(1)は掘削装置であり、第1図に示すよう
に、パワーシヨベルカー(2)のアーム(3)の先端部
に該掘削装置(1)のモータ(4)を揺動自在に取り付
けて該掘削装置(1)を懸吊している。又、該掘削装置
(1)は前記モータ(4)と端板(5)及び円筒状のカ
バー(6)並びにオーガ(7)より構成されている。該
モータ(4)はパワーシヨベルカー(2)のブーム
(8)又は前記アーム(3)と共に、レバー(9)の操
作により回動するように構成している。In the figure, (1) is an excavator, and as shown in FIG. 1, a motor (4) of the excavator (1) is swung at the tip of an arm (3) of a power shovel car (2). The excavator (1) is movably mounted and suspended. The excavator (1) comprises the motor (4), an end plate (5), a cylindrical cover (6) and an auger (7). The motor (4) is configured to rotate together with the boom (8) of the power shovel car (2) or the arm (3) by operating the lever (9).
ここで、前記掘削装置(1)について更に詳述すれば、
第2図に示すように、前記アーム(3)の先端部に第1
のプレート(10)(10)の一端部がピン(11)にて回動
自在に枢着され、他端部をピン(12)にて連結してい
る。更に、該ピン(12)を第2のプレート(13)の上端
部に挿通すると共に、該第2のプレート(13)の下端部
を字状に形成している。又、モータ(4)の上端部は
正面視略V字状に切欠され、その両側にピン(14)を固
設すると共に、該ピン(14)を前記第2のプレート(1
3)の下端部に挿通している。斯くして、モータ(4)
はパワーシヨベルカー(2)のアーム(3)より揺動自
在に取り付けられる。Here, if the excavator (1) is described in more detail,
As shown in FIG. 2, a first member is attached to the tip of the arm (3).
One ends of the plates (10) (10) are rotatably supported by pins (11), and the other ends are connected by pins (12). Further, the pin (12) is inserted into the upper end portion of the second plate (13), and the lower end portion of the second plate (13) is formed in a letter shape. Further, the upper end of the motor (4) is cut out in a substantially V shape in a front view, and pins (14) are fixedly provided on both sides of the notch, and the pins (14) are attached to the second plate (1).
It is inserted through the lower end of 3). Thus, the motor (4)
Is swingably attached from the arm (3) of the power shovel car (2).
又、第3図に示すように、モータ(4)の駆動軸(15)
に断面視正方形の駆動シヤフト(16)がボルト(17)に
て連結され、該駆動シヤフト(16)に所定の間隔を有し
て孔(18)(18)…が左右方向へ開穿されている。一
方、前記端板(5)は第3図及び第4図に示すように円
形に形成され、上面に略三角形の羽(19)(19)…が立
設されていると共に、中央部の上下方向に前記駆動シヤ
フト(16)と略同形の孔(20)を開穿している。更に、
前記羽(19)(19)…間にはやや大径の孔(21)(21)
…が開穿され、且つ、該端板(5)の外周縁部にフツク
(22)(22)…がピン(23)(23)…にて回動自在に枢
着されており、該フツク(22)(22)…により前記カバ
ー(6)を端板(5)に密嵌できるように構成してい
る。そして、該該端板(5)の上端部と前記駆動シヤフ
ト(16)の孔(18)とにピン(23)を挿通して駆動シヤ
フト(16)の任意の位置に該端板(5)を取り付けられ
るように構成している。Further, as shown in FIG. 3, the drive shaft (15) of the motor (4)
A drive shaft (16) having a square cross section is connected to the drive shaft (16) with a bolt (17), and holes (18) (18) ... are opened in the left-right direction at predetermined intervals in the drive shaft (16). There is. On the other hand, the end plate (5) is formed in a circular shape as shown in FIGS. 3 and 4, and has substantially triangular wings (19) (19) ... A hole (20) having substantially the same shape as the drive shaft (16) is opened in the direction. Furthermore,
The feathers (19) (19) ... holes (21) (21) with a slightly larger diameter between them
... is opened, and hooks (22), (22) are pivotally attached to the outer peripheral edge of the end plate (5) by pins (23), (23). The covers (6) can be tightly fitted to the end plates (5) by (22), (22). Then, the pin (23) is inserted into the upper end portion of the end plate (5) and the hole (18) of the drive shaft (16), and the end plate (5) is placed at an arbitrary position of the drive shaft (16). Is configured to be attached.
又、前記カバー(6)は第3図に示すように、鋼管から
或は鉄板を円筒状にして形成されており、該カバー
(6)の上端部外周には鍔部(24)(24)が側方へ2段
に突設されている。更に、該カバ(6)の下端部を切欠
し、該切欠部に多数の爪(25)(25)…が固設されてい
る。該爪(25)(25)…は硬鉄で形成されていると共に
カバー(6)の側方へやや突設されている。この爪(2
5)(25)…の上方であつて、且つ、カバー(6)の外
周面には螺旋状のガイドライン(26)が突設されてお
り、該ガイドライン(26)の上部のカバー(6)前後に
小径の孔(27)(27)が開穿されている。Further, as shown in FIG. 3, the cover (6) is formed of a steel pipe or an iron plate in a cylindrical shape, and flanges (24) (24) are provided on the outer periphery of the upper end of the cover (6). Is laterally projected in two steps. Further, the lower end of the cover (6) is cut out, and a large number of claws (25) (25) are fixedly provided in the cutout. The claws (25) (25) ... Are made of hard iron and are slightly projected to the side of the cover (6). This nail (2
5) Above the guides (25), and on the outer peripheral surface of the cover (6), a spiral guideline (26) is provided so as to project, and the front and rear of the cover (6) above the guideline (26). Small-diameter holes (27) (27) are opened in the.
一方、前記オーガ(7)はシヤフト(28)と螺旋状の刃
(29)から構成され、該刃(29)はシヤフト(28)の下
部に巻装されると共に、該刃(29)の下端部に爪(30)
を突設している。該爪(30)はカバー(6)の爪(25)
(25)…と同様の硬鉄によつて形成されている。又、前
記シヤフト(28)の上端部から前記駆動シヤフト(16)
と略同形状の孔(31)が穿設されており、該駆動シヤフ
ト(16)を該孔(31)に挿入し、オーガシヤフト(28)
の上端部左右方向に開穿した孔(32)と駆動シヤフト
(16)の孔(18)とにピン(33)を挿通して該オーガ
(7)を駆動シヤフト(16)の任意の孔(18)に固定で
きるように構成している。On the other hand, the auger (7) is composed of a shaft (28) and a spiral blade (29), and the blade (29) is wound around the lower part of the shaft (28) and the lower end of the blade (29). Nails on the part (30)
Is protruding. The claw (30) is the claw (25) of the cover (6).
(25) ... It is made of hard iron. Also, from the upper end of the shaft (28), the drive shaft (16)
A hole (31) having substantially the same shape as that of the drive shaft (16) is inserted into the hole (31) to form an auger shaft (28).
The pin (33) is inserted into the hole (32) opened in the left and right direction of the upper end of the drive shaft and the hole (18) of the drive shaft (16), and the auger (7) is inserted into an arbitrary hole of the drive shaft (16) ( It is configured so that it can be fixed to 18).
而して、該掘削装置(1)を用いてマンホール用の穴を
掘削する際には、第1図及び第3図に示すように、パワ
ーシヨベルカー(2)を所定の位置まで進行させる。そ
して、前記駆動シヤフト(16)に端板(5)を取り付
け、該端板(5)の裏面にカバー(6)の上段の鍔部
(24)を当接し、端板(5)のフツク(22)(22)…と
カバー(6)の下段の鍔部(24)とを係合させてカバー
(6)を端板(5)に固定する。又、前記オーガ(7)
のシヤフト(28)に該駆動シヤフト(16)を挿入して第
3図に示したようにピン(33)にて該オーガ(7)を固
定する。このときは、該オーガ(7)の刃(29)がカバ
ー(6)内から下方へ突出するように調整して、カバー
(6)とオーガ(7)とを駆動シヤフト(16)に取り付
け、レバー(9)を操作して掘削装置(1)を懸吊す
る。該掘削装置(1)は前述したように揺動自在に取り
付けられているので、自重により地面に対して正確なる
垂直姿勢になる。そして、掘削するマンホール用穴の中
央部となる位置にオーガ(7)の先端部を当接し、レバ
ー(9)を操作してモータ(4)を駆動することにより
カバー(6)及びオーガ(7)が回転し、該オーガ
(7)の刃(29)が地盤(34)を掘削し始める。When excavating a manhole hole using the excavator (1), the power shovel car (2) is advanced to a predetermined position as shown in FIGS. 1 and 3. . Then, the end plate (5) is attached to the drive shaft (16), the upper flange portion (24) of the cover (6) is brought into contact with the back surface of the end plate (5), and the hook () of the end plate (5) is attached. 22 and 22 are engaged with the lower collar portion (24) of the cover (6) to fix the cover (6) to the end plate (5). Also, the auger (7)
The drive shaft (16) is inserted into the shaft (28) and the auger (7) is fixed by the pin (33) as shown in FIG. At this time, the blade (29) of the auger (7) is adjusted so as to project downward from the inside of the cover (6), and the cover (6) and the auger (7) are attached to the drive shaft (16), The lever (9) is operated to suspend the excavator (1). Since the excavator (1) is swingably attached as described above, it takes an accurate vertical posture with respect to the ground due to its own weight. Then, the tip portion of the auger (7) is brought into contact with the central portion of the manhole hole to be excavated, and the lever (9) is operated to drive the motor (4) to cover the cover (6) and the auger (7). ) Rotates, and the blade (29) of the auger (7) starts excavating the ground (34).
該オーガ(7)が一定の深さまで進行した時点即ち、第
5図に示すように、オーガ(7)の刃(29)がカバー
(6)から突出された深さまで掘削した時点で一時モー
タ(4)の駆動を停止し、オーガ(7)及びカバー
(6)の回転を止める。そして、第6図に示すように端
板(5)のフツク(22)(22)…をカバー(6)の鍔部
(24)から取り外し、第1図に示したレバー(9)を操
作してアーム(3)の先端部を上方へ移動し、駆動シヤ
フト(16)を上方へ引張することによりオーガ(7)を
第1段階の掘削穴(35)及びカバー(6)内より取り出
すことができる。このときは、オーガ(7)の刃(29)
上に残土(36)が載積されており、該残土(36)をダン
プカー(図示せず)等に排出する。When the auger (7) advances to a certain depth, that is, as shown in FIG. 5, when the blade (29) of the auger (7) excavates to the depth protruding from the cover (6), a temporary motor ( The drive of 4) is stopped and the rotation of the auger (7) and the cover (6) is stopped. Then, as shown in FIG. 6, the hooks (22) (22) of the end plate (5) are removed from the collar portion (24) of the cover (6), and the lever (9) shown in FIG. 1 is operated. The tip of the arm (3) is moved upward and the drive shaft (16) is pulled upward so that the auger (7) can be taken out from the excavation hole (35) and the cover (6) in the first stage. it can. In this case, the blade (29) of the auger (7)
The remaining soil (36) is placed on the top, and the remaining soil (36) is discharged to a dump truck (not shown) or the like.
次に第7図に示すように、端板(5)或はオーガ(7)
の駆動シヤフト(16)に対する取付位置を調整して、オ
ーガ(7)をカバー(6)より突出させずにカバー
(6)を端板(5)にフツク(22)(22)…にて締結す
る。そして、第8図に示すように、再び第1図に示した
モータ(4)を駆動し、カバー(6)及びオーガ(7)
を回転させる。然るときは、オーガ(7)は空転すると
共にカバー(6)の下端部に設けた爪(25)(25)…が
第1段階の掘削穴(35)の周縁部を削り乍ら地中へ進行
し、該第1段階の掘削穴(35)の底面まで進行した時点
で回転を停止する。次に第9図に示すように、端板
(5)とカバー(6)との固定を解除し、該端板(5)
を上部へ固定し、第1図に示した前記モータ(4)を駆
動す。このときは、カバー(6)は回転せずオーガ
(7)のみが回転し、該オーガ(7)の刃(29)が第1
段階の掘削穴(35)の底面より掘削を始める。そして、
第10図及び第11図に示すように、オーガ(7)の刃(2
9)上に載積した残土(36)を排除した後、カバー
(6)よりオーガ(7)を突出させずにカバー(6)を
端板(5)に固定し、更にカバー(6)の爪(25)(2
5)…にて第2段階の掘削穴(37)縁部を削り取り乍ら
該第2段階の掘削穴(37)底面まで進行させる。又、再
び第8図に説明した作業を第2段階の掘削穴(37)底面
より行い、順次上述の作業を繰り返して所定の深度まで
掘削する。Next, as shown in FIG. 7, an end plate (5) or an auger (7)
Adjust the mounting position of the drive shaft (16) to the drive shaft (16) and fasten the cover (6) to the end plate (5) with the hooks (22) (22) ... without protruding the auger (7) from the cover (6). To do. Then, as shown in FIG. 8, the motor (4) shown in FIG. 1 is driven again to cover the cover (6) and the auger (7).
To rotate. In that case, the auger (7) runs idle, and the claws (25) (25) provided at the lower end of the cover (6) scrape the peripheral edge of the first-stage drilling hole (35) to bring it into the ground. And the rotation is stopped when it reaches the bottom of the excavation hole (35) in the first stage. Next, as shown in FIG. 9, the fixing of the end plate (5) and the cover (6) is released, and the end plate (5) is released.
Is fixed to the upper part and the motor (4) shown in FIG. 1 is driven. At this time, the cover (6) does not rotate, only the auger (7) rotates, and the blade (29) of the auger (7) moves to the first position.
Start excavation from the bottom of the drill hole (35) at the stage. And
As shown in FIG. 10 and FIG. 11, the blade (2
9) After removing the remaining soil (36) loaded on the cover (6), fix the cover (6) to the end plate (5) without projecting the auger (7) from the cover (6), and further cover the cover (6). Nails (25) (2
At 5) ..., the edge of the second-stage drilling hole (37) is scraped off to proceed to the bottom of the second-stage drilling hole (37). Further, the work described with reference to FIG. 8 is performed again from the bottom surface of the excavation hole (37) in the second stage, and the above-described work is sequentially repeated to excavate to a predetermined depth.
この掘削作業中、第3図及び第12図に示すように、カバ
(6)の爪(25)(25)…は土砂を削り取ると共にカバ
ー(6)の摩耗を防止している。又、該爪(25)(25)
…はカバー(6)の外周よりもやや側方へ突設されてい
るので、カバー(6)よりも掘削穴(38)をやや大径に
削り取り、該カバー(6)の外周面と掘削穴(38)の内
壁面との摩擦抵抗を小としてカバー(6)の円滑なる進
行を図つている。又、カバー(6)の下部外周面に突設
されたガイドライン(26)は前記爪(25)(25)…がカ
バー(6)の外側にて削り取つた土砂等を該カバー
(6)の回動に伴って上方へ移動させる。そして、該ガ
イドライン(26)の上方に形成した孔(27)(27)を介
して該土砂をカバー(6)の内側へ送り落とすことによ
り、この土砂がカバー(6)の外周面と掘削穴(38)の
内壁面とに圧迫されて密着することを防止し、前記爪
(25)(25)…と相俟つて該カバー(6)が地中へ進行
る際の摩擦抵抗を低減している。又、第3図に示したオ
ーガ(7)の爪(30)は、該オーガ(7)の刃(29)が
地盤(34)を掘削する際に該地盤(34)を軟化するの
で、該刃(29)にて容易に地盤(34)を掘削できる。更
に、岩盤或は大形の石等が掘削すべき地盤(34)に存在
した場合、該刃(29)の切損を防止すると共にこの刃
(29)の摩耗をも防止する。During this excavation work, as shown in FIG. 3 and FIG. 12, the claws (25) (25) of the cover (6) scrape off the earth and sand and prevent the cover (6) from being worn. Also, the nails (25) (25)
Since the projecting portion is projected slightly to the side of the outer periphery of the cover (6), the excavation hole (38) is shaved to have a slightly larger diameter than the cover (6), and the outer peripheral surface of the cover (6) and the excavation hole are The frictional resistance of the inner wall surface of (38) is made small so that the cover (6) can be smoothly advanced. Further, the guide line (26) protrudingly provided on the outer peripheral surface of the lower portion of the cover (6) has a structure in which the claws (25) (25) ... It moves upward with the rotation. Then, the earth and sand are sent into the inside of the cover (6) through the holes (27) and (27) formed above the guide line (26), so that the earth and sand are excavated and the outer peripheral surface of the cover (6). It is possible to prevent the inner wall surface of (38) from being pressed and brought into close contact with each other, and in combination with the claws (25) (25) ..., reduce the frictional resistance when the cover (6) advances to the ground. There is. Further, the claw (30) of the auger (7) shown in FIG. 3 softens the ground (34) when the blade (29) of the auger (7) excavates the ground (34). The ground (34) can be easily excavated by the blade (29). Further, when rock or large stones are present in the ground (34) to be excavated, the blade (29) is prevented from being damaged and the blade (29) is also prevented from being worn.
斯くして、第12図に示すように穿設された掘削穴(38)
内にはカバー(6)が挿入され、該カバー(6)は土砂
をシールドするいわゆる「土留め」としての役割を果た
す。そして、該カバー(6)内にマンホール(39)を収
容して、第13図に示すようにこのカバー(6)を駆動シ
ヤフト(16)に取り付けた端板(5)とを固定する。然
る後、前記モータ(4)を作動させて掘削時とは逆にカ
バー(6)を回転させ、一定の位置まで引き上げた時点
で埋戻し用の土砂(40)等を端板(5)の孔(2)(2
1)…よりマンホール(39)の外周面とカバー(6)の
内側面との間に挿入する。そして、順次埋戻し用の土砂
(40)等を挿入し乍らカバー(6)を地中より引き上げ
る。このとき、特に軟弱地盤に於ては、埋戻し用の土砂
(40)を挿入せずにカバー(6)を引き上げると、地盤
(34)の土圧によりマンホール(39)が傾いたり、或は
該掘削穴(38)の周辺部の地盤にクラツカが入る等の問
題が生じるので、これを防止するために前述したカバー
(6)の引き上げ作業を行う。斯くして、マンホール
(39)が地盤(34)に設置されるのである。Thus, the excavation hole (38) formed as shown in FIG.
A cover (6) is inserted therein, and the cover (6) serves as a so-called “earth retaining” that shields soil. Then, the manhole (39) is housed in the cover (6), and the cover (6) is fixed to the end plate (5) attached to the drive shaft (16) as shown in FIG. Then, the motor (4) is operated to rotate the cover (6) contrary to the time of excavation, and when the cover (6) is pulled up to a certain position, the earth and sand (40) for backfilling is end plate (5). Hole (2) (2
1) Insert it between the outer peripheral surface of the manhole (39) and the inner surface of the cover (6) by twisting. Then, the earth and sand (40) for backfilling are sequentially inserted, and the cover (6) is pulled up from the ground. At this time, especially in soft ground, if the cover (6) is pulled up without inserting the backfilling earth (40), the manhole (39) may tilt due to the earth pressure of the ground (34), or Since a problem such as a cracker entering the ground around the excavation hole (38) occurs, the cover (6) is pulled up in order to prevent such a problem. Thus, the manhole (39) is installed in the ground (34).
又、底の深いマンホールを設置する場合、先ず前述の掘
削作業を行い、前記カバー(6)が殆ど地中に埋設した
時点で第14図に示すように他のカバー(6a)をボルト等
にて連設し、且つ、前記駆動シヤフト(16)に代って全
長の長い駆動シヤフト(16a)をモータ(4)に連結し
て掘削作業を行う。又、カバー(6)及び(6a)を引き
上げるときは、他のカバー(6a)が地上に引き上げられ
たときに、該他のカバー(6a)をカバー(6)より取り
外し、前記駆動シヤフト(16a)を元の駆動シヤフト(1
6)に取り換えて再び引き上げ作業を行うことにより、
小型のパワーシヨベルカー(2)でも底の深いマンホー
ルを設置することができる。一方、大型のパワーシヨベ
ルカーが設置できる条件であれば始めから駆動シヤフト
(16a)を使用し、カバー(6)と(6a)とを連結して
掘削作業を行っても良い。Also, when installing a manhole with a deep bottom, first perform the above-mentioned excavation work, and when the cover (6) is almost buried in the ground, as shown in FIG. 14, use another cover (6a) for a bolt or the like. Excavation work is performed by connecting a drive shaft (16a) having a long overall length in place of the drive shaft (16) to the motor (4). When the covers (6) and (6a) are pulled up, when the other cover (6a) is pulled up to the ground, the other cover (6a) is removed from the cover (6) and the drive shaft (16a) is removed. ) The original drive shaft (1
By replacing with 6) and pulling up again,
Even a small power shovel car (2) can have a deep manhole. On the other hand, if the large power shovel car can be installed, the drive shaft (16a) may be used from the beginning and the covers (6) and (6a) may be connected to perform excavation work.
尚、この発明は、この発明の精神を逸脱しない限り種々
の改変を為す事ができ、そして、この発明が該改変せら
れたものに及ぶことは当然である。Incidentally, the present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one.
[発明の効果] この発明は、上記一実施例に詳述したように、マンホー
ル用の穴を掘削することを機械化したので、該掘削作業
が簡素化して工期を著しく短縮すると共に、施工コスト
を低減することができる。又、設置すべきマンホールと
略同径にマンホール用の穴を掘削することができるの
で、残土及び埋戻しの土量が著しく減少し、前述の作業
の簡素化と相俟つてコストを低減できる。更に、工事ス
ペースを小として工期の短縮と相俟つて、該工事による
交通の妨げを改善することができる等正に著しい効果を
奏する発明である。[Effect of the Invention] As described in detail in the above one embodiment, the present invention mechanizes the excavation of the manhole hole, so that the excavation work is simplified and the construction period is significantly shortened, and the construction cost is reduced. It can be reduced. Further, since a manhole hole having substantially the same diameter as the manhole to be installed can be excavated, the amount of remaining soil and backfill soil can be significantly reduced, and the cost can be reduced in combination with the simplification of the aforementioned work. Further, the present invention has an extremely remarkable effect in that the construction space can be reduced and the construction period can be shortened, so that the obstruction of traffic due to the construction can be improved.
図は本発明の一実施例を示し、第1図はパワーシヨベル
カーに掘削装置を装着した状態を示す側面図、第2図は
モータの取付部位を示す一部切欠拡大正面図、第3図は
掘削装置の一部切欠拡大側面図、第4図は端板の平面
図、第5図は掘削装置にて地盤を掘削し始めた状態を示
す解説図、第6図は残土を排除する状態を示す掘削装置
の解説図、第7図はカバーが地中へ進行するための掘削
装置のセツト状態を示す解説図、第8図はカバーが地中
へ進行した状態を示す掘削装置の解説図、第9図はオー
ガによる第2段階目の掘削状態を示す同解説図、第10図
は2段階目の残土を排出する状態を示す同解説図、第11
図は2段階目にカバーが地中へ進行するための掘削装置
のセツト状態を示す解説図、第12図はカバー内にマンホ
ールを収容した状態を示す断面図、第13図はカバーを地
中より引き上げる状態を示す要部の断面図、第14図は底
の深いマンホール用の穴の掘削する状態を示す掘削装置
の解説図である。 (1)……掘削装置 (2)……パワーシヨベルカー (3)……アーム、(4)……モータ (5)……端板、(6)(6a)……カバー (7)……オーガ、(15)……駆動軸 (16)(16a)……駆動シヤフト (28)……シヤフト、(35)(37)(38)……掘削穴 (36)……残土FIG. 1 shows an embodiment of the present invention, FIG. 1 is a side view showing a state in which an excavator is mounted on a power shovel car, and FIG. 2 is a partially cutaway enlarged front view showing a mounting portion of a motor. The figure is a partially cutaway enlarged side view of the excavator, Fig. 4 is a plan view of the end plate, Fig. 5 is an explanatory diagram showing a state where the excavator has started excavating the ground, and Fig. 6 excludes residual soil. Fig. 7 is an explanatory diagram of the excavator showing the state, Fig. 7 is an explanatory diagram showing the set state of the excavator for the cover to advance underground, and Fig. 8 is an explanation of the excavator showing the state of the cover advancing underground. Fig. 9 and Fig. 9 are the same explanatory views showing the second stage excavated state by the auger, and Fig. 10 is the same explanatory diagram showing the second stage excavated soil.
The figure is an explanatory view showing the set state of the excavator for moving the cover into the ground at the second stage, Fig. 12 is a cross-sectional view showing the state in which the manhole is accommodated in the cover, and Fig. 13 is the cover in the ground. FIG. 14 is an explanatory view of the excavating device showing a state of excavating a manhole having a deep bottom. (1) …… Excavator (2) …… Power shovel car (3) …… Arm, (4) …… Motor (5) …… End plate, (6) (6a) …… Cover (7)… … Auger, (15) …… Drive shaft (16) (16a) …… Drive shaft (28) …… Shaft, (35) (37) (38) …… Drilling hole (36) …… Remaining soil
Claims (2)
モータを垂設し、該モータの駆動軸に駆動シヤフトを下
方へ連設すると共に、該駆動シヤフトの任意の位置にて
脱着自在な端板と、該端板に脱着自在な円筒状のカバー
とを設け、更に、該カバー内に収容可能なオーガのシヤ
フトに前記駆動シヤフトを挿入して、該オーガを駆動シ
ヤフトの任意の位置に取り付けられるように構成したこ
とを特徴とする軟弱地盤に於けるマンホール用穴の掘削
装置。1. A power shovel car is provided with a motor vertically swingably mounted on an arm thereof, and a drive shaft of the motor is continuously connected with a drive shaft downward, and the motor shaft is detachable at an arbitrary position of the drive shaft. An end plate and a detachable cylindrical cover are provided on the end plate, and further, the drive shaft is inserted into the shaft of the auger which can be housed in the cover, and the auger is placed at an arbitrary position of the drive shaft. An excavation device for a manhole hole in soft ground, characterized by being configured to be attached.
を前記駆動シヤフトの所定の位置に取り付け、前記モー
タの駆動により該オーガを回転させて一定の深度まで掘
削し、次にオーガを前記カバーより上方へ引き抜き、該
オーガ上の残土を掘削穴より排除した後、該カバーを前
記端板を介して駆動シヤフトに取り付け、モータを駆動
して該カバーを回転し、前記オーガの掘削と略同一深度
まで該カバーを進行させ、順次所定の深度まで掘削する
ことを特徴とする請求項(1)記載の軟弱地盤に於ける
マンホール用穴の掘削装置を用いた掘削方法。2. The auger is housed in a cover, the auger is attached to a predetermined position of the drive shaft, the auger is rotated by driving the motor to excavate to a certain depth, and then the auger is removed. After pulling upward from the cover and removing the residual soil on the auger from the excavation hole, the cover is attached to the drive shaft via the end plate, the motor is driven to rotate the cover, and the excavation of the auger is omitted. The excavation method using the excavating device for a hole for manhole in soft ground according to claim 1, wherein the cover is advanced to the same depth and the excavation is sequentially performed to a predetermined depth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1245705A JPH0694770B2 (en) | 1989-09-21 | 1989-09-21 | Excavation device for manhole holes in soft ground and excavation method using the device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1245705A JPH0694770B2 (en) | 1989-09-21 | 1989-09-21 | Excavation device for manhole holes in soft ground and excavation method using the device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03107090A JPH03107090A (en) | 1991-05-07 |
JPH0694770B2 true JPH0694770B2 (en) | 1994-11-24 |
Family
ID=17137580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1245705A Expired - Lifetime JPH0694770B2 (en) | 1989-09-21 | 1989-09-21 | Excavation device for manhole holes in soft ground and excavation method using the device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0694770B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7228921B1 (en) * | 2005-06-29 | 2007-06-12 | Houg Daniel K | Ice auger covering apparatus |
US7555854B2 (en) * | 2006-11-30 | 2009-07-07 | Mlt Soil Co., Ltd. | Earth auger head and excavation method |
WO2008147015A1 (en) * | 2007-05-28 | 2008-12-04 | Daewon Electric Company Limited | Extendable excavating screw with hydraulic excavating blades |
CN116398043B (en) * | 2023-06-05 | 2023-08-29 | 临沂市政集团有限公司 | Low-carbon-emission building construction foundation drilling equipment |
-
1989
- 1989-09-21 JP JP1245705A patent/JPH0694770B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03107090A (en) | 1991-05-07 |
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