JPH08270006A - Shaft-digging machine and digging course-controlling method therefor - Google Patents
Shaft-digging machine and digging course-controlling method thereforInfo
- Publication number
- JPH08270006A JPH08270006A JP7112895A JP7112895A JPH08270006A JP H08270006 A JPH08270006 A JP H08270006A JP 7112895 A JP7112895 A JP 7112895A JP 7112895 A JP7112895 A JP 7112895A JP H08270006 A JPH08270006 A JP H08270006A
- Authority
- JP
- Japan
- Prior art keywords
- digging
- support frame
- shaft
- tip portion
- course
- 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)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、地中壁構築のための立
坑掘削機及びその掘進方向制御方法に関し、さらに詳細
には、連続地中壁、止水壁、土留壁、構造物基礎等の地
中壁を構築するため、地盤を掘削して垂直溝を形成する
立坑掘削機、およびこの立坑掘削機の掘進方向制御方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft excavator for constructing an underground wall and a method of controlling the excavation direction thereof, and more specifically, a continuous underground wall, a water stop wall, a retaining wall, a structural foundation, etc. The present invention relates to a vertical shaft excavator that excavates the ground to form a vertical groove for constructing the underground wall, and a method for controlling the excavation direction of the vertical shaft excavator.
【0002】[0002]
【従来の技術】従来、連続地中壁、止水壁、土留壁、構
造物基礎等の地中壁を構築する場合、例えば、図5およ
び図6に示すような地中壁掘削装置10(ドイツ、バウ
ワー社製)等が使用されている。この地中壁掘削装置1
0は、先端部18と、この先端部18を一体として支持
し、これに掘進反力としての垂直荷重を付加する支持枠
17と、該支持枠17を地盤中に吊降し、吊上げるベー
スマシン18と、油圧モーター11等に高圧の油圧を供
給するパワーユニット(図示せず)とを備えるものであ
る。ここで、先端部18には、油圧モーター11によっ
て少くとも一対の水平軸の周りを回転する複数のカッタ
ードラム12a,12bと、カッタードラム12a,1
2bの外周に取付けられ複数の掘削用ティース13を有
するティースホルダー14及びティースドラム14′と
を備え、一方、支持枠17には、一対のカッタードラム
12の中間上方に吸込み口15を設けた排泥ポンプ16
を備える。2. Description of the Related Art Conventionally, when constructing an underground wall such as a continuous underground wall, a water stop wall, a retaining wall, and a structural foundation, for example, an underground wall excavating device 10 (as shown in FIGS. 5 and 6). (Germany, made by Bower) etc. are used. This underground wall excavator 1
Reference numeral 0 denotes a tip portion 18, a support frame 17 which integrally supports the tip portion 18 and applies a vertical load as a reaction force for excavation to the tip portion 18, and a base for hanging the support frame 17 in the ground and hoisting it. The machine 18 and a power unit (not shown) that supplies high-pressure oil pressure to the hydraulic motor 11 and the like are provided. Here, the tip end portion 18 has a plurality of cutter drums 12a and 12b that rotate around at least a pair of horizontal axes by the hydraulic motor 11, and the cutter drums 12a and 1a.
A tooth holder 14 having a plurality of teeth 13 for excavation attached to the outer periphery of 2b and a tooth drum 14 'are provided, while the support frame 17 is provided with a suction port 15 provided above the middle of the pair of cutter drums 12. Mud pump 16
Is provided.
【0003】そして、この地中壁掘削装置10は、その
鉛直方向への掘進の精度を高めるために、特開平4−1
85817号公報に開示されているような工夫がなされ
ている。すなわち、図7及び図8に示したように、支持
枠17の外周面の上下に離隔したそれぞれ四箇所の前後
面と側面とに、油圧ジャッキ(図示せず)と板体(図示
せず)とからなるアジャストガイドフラップ20a,2
0bを配設している。そして、掘進方向を制御するため
に、アジャストガイドフラップ20a,20bの油圧ジ
ャッキを伸長して板体を外方に突出し、この板体で孔壁
を押圧することにより、支持枠17の中心軸と鉛直軸と
の誤差を制御するものである。The underground wall excavating device 10 is disclosed in Japanese Patent Application Laid-Open No. 4-1 / 1989 in order to improve the accuracy of the excavation in the vertical direction.
The device as disclosed in Japanese Patent No. 85817 is made. That is, as shown in FIGS. 7 and 8, a hydraulic jack (not shown) and a plate body (not shown) are provided on the front and rear surfaces and the side surface at four positions separated from each other on the outer peripheral surface of the support frame 17, respectively. Adjusting guide flaps 20a, 2 consisting of
0b is provided. Then, in order to control the excavation direction, the hydraulic jacks of the adjustment guide flaps 20a, 20b are extended to project the plate body outward, and the plate wall is pressed by the plate body, so that the central axis of the support frame 17 is It controls the error from the vertical axis.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、かかる
従来の地中壁掘削装置10は、構築する立坑壁厚が変わ
る度に、支持枠17の前後面のアジャストガイドフラッ
プ20bの油圧ジャッキと板体との間に、延長部材(図
示せず)を連結して、この延長部材(エクステンショ
ン)の長さによってアジャストガイドフラップ20bの
伸縮長さを調整している。したがって、この延長部材の
交換に手間が掛かるという問題点がある。また、構築す
る立坑壁厚が大きい場合には、延長部材を長くしなけれ
ばならず、これによって延長部材の重量も大きくなるた
め、大型のベースマシン18が必要になり、機材コスト
が上昇するという問題点がある。さらに、支持枠17は
比較的長く形成されており、アジャストガイドフラップ
20a,20bの伸縮だけでは、鉛直方向への掘進の誤
差を修正するのが困難であるといった問題もある。However, in the conventional underground wall excavating device 10 as described above, the hydraulic jacks and plate bodies of the adjusting guide flaps 20b on the front and rear surfaces of the support frame 17 are provided each time the vertical shaft wall thickness to be constructed changes. An extension member (not shown) is connected between the two, and the extension / contraction length of the adjustment guide flap 20b is adjusted by the length of the extension member (extension). Therefore, there is a problem that it takes time to replace the extension member. Further, when the vertical shaft wall to be constructed has a large thickness, the extension member has to be lengthened, which also increases the weight of the extension member, so that a large base machine 18 is required, resulting in an increase in equipment cost. There is a problem. Further, since the support frame 17 is formed to be relatively long, it is difficult to correct the excavation error in the vertical direction only by expanding and contracting the adjustment guide flaps 20a and 20b.
【0005】そこで、本発明は上記問題点を解消すべく
なされたもので、その目的は、支持枠にアジャストガイ
ドフラップを設けなくても、軽量な手段によって鉛直方
向への掘進誤差の修正ができる立坑掘削機及び掘進方向
制御方法を提供することにある。Therefore, the present invention has been made to solve the above problems, and an object thereof is to correct the excavation error in the vertical direction by a lightweight means without providing an adjusting guide flap on the supporting frame. A vertical shaft excavator and a method for controlling the direction of excavation.
【0006】[0006]
【課題を解決するための手段】本発明は、上記目的に鑑
みてなされたものであり、その要旨は、駆動モーターに
よって少くとも一対の水平軸の周りを回転する複数の土
砂切削ドラムを有する先端部と、この先端部に掘進反力
としての垂直荷重を付加するための支持枠とを備える立
坑掘削機であって、前記先端部と支持枠とを分離して形
成し、伸縮自在な複数の伸縮手段の両端をそれぞれ前記
先端部と前記支持枠とに枢着して連結したことを特徴と
する立坑掘削機にある。SUMMARY OF THE INVENTION The present invention has been made in view of the above objects, and its gist is to provide a tip having a plurality of earth and sand cutting drums which are rotated by a drive motor around at least a pair of horizontal axes. A vertical shaft excavator comprising a portion and a supporting frame for applying a vertical load as a reaction force for excavation to the tip portion, wherein the tip portion and the supporting frame are formed separately, and a plurality of expandable and contractible The shaft excavator is characterized in that both ends of the expanding and contracting means are pivotally connected to the tip portion and the support frame, respectively.
【0007】また、本発明の別の要旨は、駆動モーター
によって少くとも一対の水平軸の周りを回転する複数の
土砂切削ドラムを有する先端部と、この先端部に掘進反
力としての垂直荷重を付加するための支持枠とを備え、
この支持枠と前記先端部とを分離して形成し、この先端
部と支持枠とに、伸縮自在な複数の伸縮手段の両端をそ
れぞれ枢着して、前記先端部と前記支持枠と連結した立
坑掘削機における掘進方向を制御する方法であって、前
記伸縮手段を各別に伸縮制御し、各伸縮手段の長さの差
異により、先端部の軸方向と鉛直軸との相対角度を制御
することを特徴とする掘進方向制御方法にある。Another object of the present invention is to provide a tip portion having a plurality of earth and sand cutting drums that rotate around at least a pair of horizontal axes by a drive motor and a vertical load as a reaction force for excavation at the tip portion. With a support frame for adding,
The support frame and the tip portion are formed separately, and both ends of a plurality of extendable and retractable means are pivotally attached to the tip portion and the support frame to connect the tip portion and the support frame. A method for controlling the direction of excavation in a vertical shaft excavator, wherein the expansion and contraction means are individually expanded and contracted, and the relative angle between the axial direction of the tip and the vertical axis is controlled by the difference in the length of each expansion and contraction means. The method of controlling the excavation direction is characterized by
【0008】[0008]
【作用】本発明の立坑掘削機および掘進方向制御方法で
は、複数の土砂切削ドラム等を有する先端部と、この先
端部に掘進反力としての垂直荷重を付加するための支持
枠とを分離して形成し、伸縮自在な複数の伸縮手段の両
端をそれぞれ先端部と支持枠とに枢着して連結する。そ
して、立坑掘削機の掘進方向の鉛直方向からの偏向を修
正したり、あるいは、鉛直方向から偏向するように掘進
する場合に、複数の伸縮手段のうち適当な伸縮手段を伸
長したり、あるいは収縮することによって、伸縮手段間
の相対長さに差を生じ、この先端部の中心軸が鉛直方向
から偏向し、先端部は傾斜して掘進する。In the shaft excavator and the excavation direction control method of the present invention, the tip end having a plurality of earth and sand cutting drums and the like and the support frame for applying a vertical load as an excavation reaction force to the tip end are separated. Both ends of a plurality of expandable and contractible expansion and contraction means are pivotally connected to the tip and the support frame, respectively. When the excavation direction of the vertical excavator is corrected from the vertical direction, or when the excavation is performed so as to be deflected from the vertical direction, an appropriate expansion / contraction means of the plurality of expansion / contraction means is extended or contracted. By doing so, a difference occurs in the relative length between the expansion and contraction means, the central axis of this tip portion is deflected from the vertical direction, and the tip portion is inclined and excavated.
【0009】[0009]
【実施例】以下に、図面を参照して本発明の実施例を説
明する。本発明の立坑掘削機は、図1に示したように、
分離して形成した支持枠17及び先端部18と、これら
支持枠17及び先端部18に両端を枢着して連結した伸
縮手段としての油圧ジャッキ30とを主要部として備え
る。そして、上記主要部以外に、分離して形成した支持
枠17及び先端部18との間に設けた構成として、連結
部材31と、排泥ポンプ連結管32と、油圧パイプ37
と、油圧モーター39(図3参照)とを備える。Embodiments of the present invention will be described below with reference to the drawings. The vertical shaft excavator of the present invention, as shown in FIG.
As a main part, the support frame 17 and the tip portion 18 which are formed separately are provided, and the hydraulic jack 30 as the expansion and contraction means which has both ends pivotally connected to the support frame 17 and the tip portion 18 to be connected. Then, in addition to the main part, as a configuration provided between the separately formed support frame 17 and the tip part 18, a connecting member 31, a sludge pump connecting pipe 32, and a hydraulic pipe 37.
And a hydraulic motor 39 (see FIG. 3).
【0010】ここで、支持枠17は、図1(a),(b)に示
すように、掘削用ティース13による切削幅よりも若干
小さい長辺と、切削厚さよりも若干小さい短辺とからな
る矩形の水平断面を有する枠体で、掘削面における単位
面積当りの荷重を増すために鋼製部材19を立設して可
及的高く組立てられている。そして、この支持枠17
は、排泥吸込み口15に排泥ポンプ連結管32を介して
連通した排泥ポンプ16と、偏位データ検出手段として
の傾斜センサ(図示せず)とを備え、さらに、この支持
枠17はベースマシン18によって地盤中に吊降し、吊
上げられ、ベースマシン18には、油圧モーター39等
に高圧の油圧を供給するパワーユニット(図示せず)が
設けられている。なお、本発明の立坑掘削機において、
支持枠17には、従来の地中壁掘削装置10のようなア
ジャストガイドフラップが設けられていない。Here, as shown in FIGS. 1 (a) and 1 (b), the support frame 17 is composed of a long side slightly smaller than the cutting width by the excavating teeth 13 and a short side slightly smaller than the cutting thickness. This is a frame body having a rectangular horizontal cross section, and a steel member 19 is erected in order to increase the load per unit area on the excavation surface and is assembled as high as possible. And this support frame 17
Includes a sludge pump 16 communicating with the sludge suction port 15 via a sludge pump connecting pipe 32, and an inclination sensor (not shown) as a deviation data detecting means. A power unit (not shown) for suspending and hoisting in the ground by the base machine 18 and supplying a high hydraulic pressure to the hydraulic motor 39 and the like is provided in the base machine 18. In the shaft excavator of the present invention,
The support frame 17 is not provided with an adjusting guide flap unlike the conventional underground wall excavating device 10.
【0011】また、先端部18も支持枠17と同様に、
図3に示すように、矩形の水平断面を有する枠体に組立
てられており、前述した従来の地中壁掘削装置10と同
様な構成、すなわち、油圧モーター39によって少くと
も一対の水平軸の周りを回転する複数のカッタードラム
12a,12bと、カッタードラム12a,12bの外
周に取付けられ複数の掘削用ティース13を有するティ
ースホルダー14及びティースドラム14′と、一対の
カッタードラム12の中間上方に設けられた排泥吸込み
口15とを備える。Further, the tip portion 18 is also the same as the support frame 17,
As shown in FIG. 3, it is assembled into a frame body having a rectangular horizontal cross section, and has the same structure as that of the conventional underground wall excavation device 10 described above, that is, at least a pair of horizontal axes is provided by a hydraulic motor 39. A plurality of cutter drums 12a, 12b for rotating the machine, a tooth holder 14 having a plurality of teeth 13 for excavation attached to the outer circumference of the cutter drums 12a, 12b, and a tooth drum 14 ', and provided in the upper middle of the pair of cutter drums 12. The sludge suction port 15 is provided.
【0012】さらに、油圧ジャッキ30a,30b,3
0c,30dは、図3に示したように、先端部18と支
持枠17との矩形断面において、二つの長辺の対向する
四か所に配置し、それぞれの油圧ジャッキの上下端部3
3,35を、先端部18と支持枠17とに設けた軸受部
34,36に枢着して固定する。ここで、油圧ジャッキ
の上下端部33,35はそれぞれ球形状に形成し、一
方、軸受部34,36には、この球形状を嵌着する形状
の凹部を形成し、かようにして、上下端部33,35
は、360°回転可能に軸受部34,36に枢着する。
また、それぞれの油圧ジャッキ30a,30b,30
c,30dには、前記パワーユニットから油圧パイプ3
8を介して高圧の油圧が供給されている。さらに、油圧
ジャッキ30a,30b,30c,30dのそれぞれに
はストロークセンサー(図示せず)を設けて伸縮長さを
求め、この伸縮長さを制御装置(図示せず)によって演
算し、先端部中心軸Pの垂直軸に対する偏位角度を求め
る。そして、この偏位角度を適宜調整するために、制御
装置を自動あるいは手動にて操作して、油圧ジャッキ3
0a,30b,30c,30dそれぞれの伸縮長さを制
御する。Further, the hydraulic jacks 30a, 30b, 3
As shown in FIG. 3, 0c and 30d are arranged at four opposite sides of the two long sides in the rectangular cross section of the tip portion 18 and the support frame 17, and the upper and lower end portions 3 of the respective hydraulic jacks are arranged.
3, 35 are pivotally attached and fixed to bearings 34, 36 provided on the tip portion 18 and the support frame 17. Here, the upper and lower end portions 33 and 35 of the hydraulic jack are formed in a spherical shape, respectively, while the bearing portions 34 and 36 are formed with concave portions into which the spherical shape is fitted. Ends 33, 35
Is pivotally attached to the bearing portions 34 and 36 so as to be rotatable by 360 °.
Also, the respective hydraulic jacks 30a, 30b, 30
c, 30d, from the power unit to the hydraulic pipe 3
High-pressure hydraulic pressure is supplied via 8. Further, each of the hydraulic jacks 30a, 30b, 30c, 30d is provided with a stroke sensor (not shown) to obtain the extension / contraction length, and the extension / contraction length is calculated by a control device (not shown) to determine the center of the tip. The deviation angle of the axis P with respect to the vertical axis is obtained. Then, in order to appropriately adjust the deviation angle, the control device is automatically or manually operated to operate the hydraulic jack 3
The expansion / contraction length of each of 0a, 30b, 30c, and 30d is controlled.
【0013】更にまた、連結部材31は、図3に示した
ように、先端部18と支持枠17との矩形断面におい
て、二つの短辺の対向する二か所に配置し、図4(a),
(b)に示したように、下端に縦長穴31dを有する凸部
が設けられ、上端が支持枠に固定された軸部材31a
と、この凸部と直交する方向の凹部が上端に形成され、
下端部が先端部18に固定された軸部材31cと、軸部
材31aの凸部を挟み、縦長穴31dが形成された二股
形状の上端部および軸部材31cの凹部に嵌合する凸形
状に形成された下端部とを有する中間部材31bと、こ
の中間部材31bの上端部と軸部材31aの凸部との縦
長穴31dに回動可能に貫通して固定されたピン31e
と、中間部材31bの下端部と軸部材31cの凹部と
を、ピン31eに直交する方向に貫通して回動可能に固
定したピン31fとからなる。かような構成の連結部材
31は、ピン31eとピン31fとによって、直交する
二方向に回動することができ、中間部材31bと軸部材
31aとが縦長穴31dでピン固定されているため、油
圧ジャッキ30a,30b,30c,30dの伸縮に追
従して所定長だけ縦方向に伸縮することが可能である。Further, as shown in FIG. 3, the connecting member 31 is arranged at two opposite sides of the two short sides in the rectangular cross section of the tip portion 18 and the support frame 17, and the connecting member 31 is arranged as shown in FIG. ) 、
As shown in (b), the shaft member 31a is provided with a convex portion having a vertically long hole 31d at the lower end and the upper end fixed to the support frame.
And a concave portion in the direction orthogonal to this convex portion is formed at the upper end,
The shaft member 31c whose lower end is fixed to the tip end 18 and the convex portion of the shaft member 31a are sandwiched to form a bifurcated upper end portion having a vertically elongated hole 31d and a convex shape that fits into the concave portion of the shaft member 31c. A pin 31e rotatably pierced through a vertically elongated hole 31d formed between an intermediate member 31b having a closed lower end and an upper end of the intermediate member 31b and a protrusion of the shaft member 31a.
And a pin 31f that rotatably fixes the lower end of the intermediate member 31b and the recess of the shaft member 31c in a direction orthogonal to the pin 31e. The connecting member 31 having such a configuration can be rotated in two orthogonal directions by the pin 31e and the pin 31f, and the intermediate member 31b and the shaft member 31a are pin-fixed by the vertically elongated hole 31d. The hydraulic jacks 30a, 30b, 30c, and 30d can be expanded and contracted in the vertical direction by a predetermined length by following the expansion and contraction.
【0014】また、排泥ポンプ連結管32は、表面が蛇
腹形状の管体を使用して伸縮自在に形成し、油圧ジャッ
キ30a,30b,30c,30dの伸縮に追従する。Further, the sludge pump connecting pipe 32 is formed so as to be expandable and contractible by using a pipe body having a bellows-shaped surface, and follows expansion and contraction of the hydraulic jacks 30a, 30b, 30c and 30d.
【0015】さらに、油圧モーター39は、それぞれカ
ッタードラム12a,12bを回転するための駆動力を
供給するため、先端部の上面に設けられ、前記パワーユ
ニットから油圧パイプ37を介して高圧の油圧が供給さ
れている。Further, the hydraulic motor 39 is provided on the upper surface of the tip end portion in order to supply a driving force for rotating the cutter drums 12a and 12b, respectively, and a high hydraulic pressure is supplied from the power unit through the hydraulic pipe 37. Has been done.
【0016】更にまた、支持枠17に設けた偏位データ
検出手段としての傾斜センサー(図示せず)は、図1に
示すような支持枠17の中心軸Qの垂直軸に対する傾斜
角度を検出し、この傾斜角度に基づき、前述の制御装置
によって、X,Y方向それぞれへの傾斜角度と、X,Y
方向それぞれへの偏位(偏向距離)を算出する。Further, an inclination sensor (not shown) as a deviation data detecting means provided in the support frame 17 detects the inclination angle of the central axis Q of the support frame 17 with respect to the vertical axis as shown in FIG. Based on this tilt angle, the tilt angle in each of the X and Y directions and the X, Y
The deviation (deflection distance) in each direction is calculated.
【0017】次に、上記構成の立坑掘削機における掘進
方向を制御する方法について説明する。例えば、支持枠
17に設けた傾斜センサーと制御装置とによって、支持
枠中心軸Qが垂直軸に対して−X方向に、所定値以上に
偏向していることを検知した場合、先端部中心軸Pをこ
れとは逆方向、つまり+X方向に傾斜するように先端部
18を制御する。すなわち、油圧ジャッキ30aと30
bとを同じ長さだけ伸長し、油圧ジャッキ30cと30
dとは初期の長さのままとするか、あるいは、同じ長さ
だけ収縮する。かようにして生じた、油圧ジャッキ30
a,30bと油圧ジャッキ30c,30dとの相対的な
長さの差により、先端部18は支持枠17に対して+X
方向に傾斜して掘進し、偏向した立坑掘削機の掘進方向
を修正することができる。Next, a method for controlling the excavation direction in the shaft excavator having the above-mentioned structure will be described. For example, when it is detected by the tilt sensor provided in the support frame 17 and the control device that the support frame center axis Q is deflected by a predetermined value or more in the −X direction with respect to the vertical axis, the tip end center axis The tip portion 18 is controlled so that P is inclined in the opposite direction, that is, in the + X direction. That is, the hydraulic jacks 30a and 30
b is extended by the same length, and hydraulic jacks 30c and 30
d is either left at its initial length or contracted by the same length. The hydraulic jack 30 thus generated
Due to the relative difference in length between the a and 30b and the hydraulic jacks 30c and 30d, the tip portion 18 is + X relative to the support frame 17.
The digging direction of the vertical shaft excavator which is deflected can be corrected by digging in the direction.
【0018】また、上記とは逆に、支持枠中心軸Qが垂
直軸に対して+X方向に偏向している場合、油圧ジャッ
キ30cと30dとを同じ長さだけ伸長し、油圧ジャッ
キ30aと30bとは初期の長さのままとするか、ある
いは、同じ長さだけ収縮する。すると、先端部18は支
持枠17に対して−X方向に傾斜して掘進し、偏向した
立坑掘削機の掘進方向を修正することができる。On the contrary, when the central axis Q of the support frame is deflected in the + X direction with respect to the vertical axis, the hydraulic jacks 30c and 30d are extended by the same length, and the hydraulic jacks 30a and 30b are extended. And can either be left at their initial length, or they can contract by the same length. Then, the tip portion 18 is inclined with respect to the support frame 17 in the −X direction to proceed with the excavation, and the excavating direction of the deflected shaft excavator can be corrected.
【0019】さらに、支持枠中心軸Qが垂直軸に対して
−Y方向に偏向している場合、先端部中心軸Pをこれと
は逆方向、つまり+Y方向に傾斜するように先端部18
を制御する。すなわち、油圧ジャッキ30bと30dと
を同じ長さだけ伸長し、油圧ジャッキ30aと30cと
は初期の長さのままとするか、あるいは、同じ長さだけ
収縮する。すると、かようにして生じた、油圧ジャッキ
30b,30dと油圧ジャッキ30a,30cとの相対
的な長さの差により、先端部18は支持枠17に対して
+Y方向に傾斜して掘進し、偏向した立坑掘削機の掘進
方向を修正することができる。Further, when the support frame central axis Q is deflected in the -Y direction with respect to the vertical axis, the distal end central axis P is inclined in the opposite direction, that is, in the + Y direction.
Control. That is, the hydraulic jacks 30b and 30d are extended by the same length, and the hydraulic jacks 30a and 30c are left at their initial lengths or are contracted by the same length. Then, due to the difference in the relative lengths of the hydraulic jacks 30b, 30d and the hydraulic jacks 30a, 30c thus generated, the tip portion 18 inclines in the + Y direction with respect to the support frame 17, and advances. It is possible to correct the excavation direction of the vertical shaft excavator that is biased.
【0020】更にまた、支持枠中心軸Qが垂直軸に対し
て+Y方向に偏向している場合、油圧ジャッキ30aと
30cとを同じ長さだけ伸長し、油圧ジャッキ30bと
30dとは初期の長さのままとするか、あるいは、同じ
長さだけ収縮する。すると、先端部18は支持枠17に
対して−Y方向に傾斜して掘進し、偏向した立坑掘削機
の掘進方向を修正することができる。Furthermore, when the support frame center axis Q is deflected in the + Y direction with respect to the vertical axis, the hydraulic jacks 30a and 30c are extended by the same length, and the hydraulic jacks 30b and 30d are set to the initial length. Or leave the same length to contract. Then, the tip portion 18 is advanced with respect to the support frame 17 while inclining in the −Y direction, and the excavation direction of the deflected vertical shaft excavator can be corrected.
【0021】[0021]
【発明の効果】本発明の立坑掘削機および掘進方向制御
方法は、伸縮自在な複数の伸縮手段の両端を、分離して
形成した先端部と支持枠とに枢着して連結したので、複
数の伸縮手段のうち適当な伸縮手段を伸長したり、ある
いは収縮することによって、伸縮手段間に相対的な長さ
の差異を生じて、先端部の中心軸を鉛直方向から偏向さ
せるだけで、掘進方向を修正することができる。したが
って、掘進方向の偏向にすばやく対応することができ
て、早期の修正が可能であり、大きな修正効果を得るこ
とができる。また、支持枠にアジャストガイドフラップ
や延長部材(エクステンション)等の坑壁押圧手段を設
けなくても掘進誤差の修正ができ、支持枠に坑壁押圧手
段を有する立坑掘削機に較べて、支持枠の軽量化を図る
ことができ、支持枠と先端部とを吊下する揚重機の小型
化も可能になる。In the shaft excavator and the excavation direction control method of the present invention, since both ends of a plurality of expandable and contractible means are pivotally connected to the separately formed tip and the support frame, a plurality of expandable and retractable means are provided. By extending or contracting an appropriate expansion / contraction means of the expansion / contraction means, a relative length difference is generated between the expansion / contraction means, and the excavation is performed only by deflecting the central axis of the tip from the vertical direction. The direction can be modified. Therefore, it is possible to promptly respond to the deflection in the excavation direction, make an early correction, and obtain a great correction effect. Further, it is possible to correct the excavation error even if the support frame is not provided with the downhole wall pushing means such as an adjustment guide flap or an extension member (extension). The weight of the lifting machine can be reduced, and the lifting machine for suspending the support frame and the tip portion can be downsized.
【図1】(a)は本発明の立坑掘削機の支持枠と先端部と
の概略正面図、(b)は(a)の断面図である。1A is a schematic front view of a support frame and a tip portion of a shaft excavator of the present invention, and FIG. 1B is a sectional view of FIG.
【図2】図1の先端部の拡大正面図である。FIG. 2 is an enlarged front view of the tip portion of FIG.
【図3】図2における一点鎖線III−IIIに沿った立坑掘
削機の断面図である。3 is a cross-sectional view of the shaft excavator taken along the alternate long and short dash line III-III in FIG.
【図4】(a)は本発明の立坑掘削機の連結部材の部分正
面図であり、(b)は(a)の一点鎖線IVb−IVb方向から見
た部分正面図である。FIG. 4 (a) is a partial front view of a connecting member of a shaft excavator of the present invention, and FIG. 4 (b) is a partial front view of the connection member seen from the direction of the alternate long and short dash line IVb-IVb in (a).
【図5】従来の地中壁掘削装置による掘削状況を示す説
明図である。FIG. 5 is an explanatory diagram showing a state of excavation by a conventional underground wall excavation device.
【図6】図5の従来の地中壁掘削装置の先端部の構造を
示す正面図である。FIG. 6 is a front view showing the structure of the tip portion of the conventional underground wall excavating device of FIG.
【図7】図5の従来の地中壁掘削装置の支持枠と先端部
とを示す正面図である。FIG. 7 is a front view showing a support frame and a tip portion of the conventional underground wall excavating device of FIG.
【図8】図5の従来の地中壁掘削装置の押圧手段の配置
を示す説明図である。8 is an explanatory view showing the arrangement of pressing means of the conventional underground wall excavating device of FIG.
12a,12b 土砂切削ドラム 17 立坑掘削機の支持枠 18 立坑掘削機の先端部 30 油圧シリンダー(伸縮手段) 39 駆動モーター 12a, 12b Sediment Cutting Drum 17 Support Frame for Shaft Excavator 18 Tip of Shaft Excavator 30 Hydraulic Cylinder (Expansion and Expansion Means) 39 Drive Motor
Claims (2)
平軸の周りを回転する複数の土砂切削ドラムを有する先
端部と、この先端部に掘進反力としての垂直荷重を付加
するための支持枠とを備える立坑掘削機であって、 前記先端部と支持枠とを分離して形成し、伸縮自在な複
数の伸縮手段の両端をそれぞれ前記先端部と前記支持枠
とに枢着して、前記先端部と前記支持枠とを連結したこ
とを特徴とする立坑掘削機。1. A tip portion having a plurality of earth and sand cutting drums that rotate around at least a pair of horizontal axes by a drive motor, and a support frame for applying a vertical load as a reaction force for excavation to the tip portion. A shaft excavator comprising: the tip portion and a support frame are formed separately, and both ends of a plurality of extendable and retractable means are pivotally attached to the tip portion and the support frame, respectively. A shaft excavator, characterized in that the shaft is connected to the support frame.
平軸の周りを回転する複数の土砂切削ドラムを有する先
端部と、この先端部に掘進反力としての垂直荷重を付加
するための支持枠とを備え、この支持枠と前記先端部と
を分離して形成し、この先端部と支持枠とに、伸縮自在
な複数の伸縮手段の両端をそれぞれ枢着して、前記先端
部と前記支持枠と連結した立坑掘削機における掘進方向
を制御する方法であって、 前記伸縮手段を各別に伸縮制御し、各伸縮手段の長さの
差異により、先端部の軸方向と鉛直軸との相対角度を制
御することを特徴とする掘進方向制御方法。2. A tip portion having a plurality of earth and sand cutting drums that rotate around at least a pair of horizontal axes by a drive motor, and a support frame for applying a vertical load as a reaction force for excavation to the tip portion. The support frame and the tip end portion are formed separately, and the tip end portion and the support frame are pivotally attached to the tip end portion and the support frame at both ends of a plurality of extendable and retractable means, respectively. A method for controlling the excavation direction in a connected shaft excavator, wherein the expansion and contraction means are individually expanded and contracted, and the relative angle between the axial direction of the tip and the vertical axis is controlled by the difference in the length of each expansion and contraction means. An excavation direction control method characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07112895A JP3523709B2 (en) | 1995-03-29 | 1995-03-29 | Shaft excavator and excavation direction control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07112895A JP3523709B2 (en) | 1995-03-29 | 1995-03-29 | Shaft excavator and excavation direction control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08270006A true JPH08270006A (en) | 1996-10-15 |
JP3523709B2 JP3523709B2 (en) | 2004-04-26 |
Family
ID=13451634
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP07112895A Expired - Fee Related JP3523709B2 (en) | 1995-03-29 | 1995-03-29 | Shaft excavator and excavation direction control method |
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