JP3481668B2 - Pipe propulsion device and pipe propulsion method - Google Patents
Pipe propulsion device and pipe propulsion methodInfo
- Publication number
- JP3481668B2 JP3481668B2 JP07362994A JP7362994A JP3481668B2 JP 3481668 B2 JP3481668 B2 JP 3481668B2 JP 07362994 A JP07362994 A JP 07362994A JP 7362994 A JP7362994 A JP 7362994A JP 3481668 B2 JP3481668 B2 JP 3481668B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- jack
- joining member
- propulsion device
- propulsion
- 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 - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ジャッキを用いた管推
進装置およびこの管推進装置を元押し装置として用いた
管推進工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe propulsion device using a jack and a pipe propulsion method using the pipe propulsion device as an original pushing device.
【０００２】[0002]
【従来の技術】管推進工法は、坑の周囲を管で覆いつつ
横坑の掘削を行う掘削工法の一つで、そのための管を前
記横坑内に挿入する装置（元押し装置）として、ジャッ
キを用いた管推進装置がある。この管推進装置の構造の
例を図８および図９に示す。なお、図８および図９の例
は、いずれも、管を図中矢印Ａ方向に沿って横坑内に挿
入する場合を想定したものである。2. Description of the Related Art The pipe propulsion method is one of the excavation methods for excavating a horizontal shaft while covering the periphery of the shaft with a pipe. As a device for inserting the pipe into the horizontal shaft (source device), a jack is used. There is a pipe propulsion device using. An example of the structure of this tube propulsion device is shown in FIGS. 8 and 9. In addition, in each of the examples of FIGS. 8 and 9, the case where the pipe is inserted into the shaft along the direction of arrow A in the drawing is assumed.
【０００３】図中符号１は地中に掘られた竪坑で、その
底面上にはレール状をなし、上面が水平面とされた一対
の推進台（基台）２が所定間隔で平行に設置されてい
る。図の場合、推進台２の一端（図中右方。以下、単に
「一端」と称する。）側の端面は、竪坑１の一端側の側
面１ａに当接されている。In the figure, reference numeral 1 is a vertical shaft dug in the ground, and a pair of propulsion bases (bases) 2 having a rail shape on the bottom surface and a horizontal top surface are installed in parallel at predetermined intervals. ing. In the case of the figure, the end face of the propulsion base 2 on one end side (on the right side of the drawing; hereinafter simply referred to as “one end”) is in contact with the side face 1 a on one end side of the vertical shaft 1.
【０００４】また、推進台２上には、円筒状をなす一対
のジャッキ３が、その軸線が推進台２の長手方向と平行
となるようそれぞれ載置されている。ここで、ジャッキ
３は、円筒状をなし、推進台２上に自らの軸線に沿って
移動自在に載置されたシリンダー４と、シリンダー４と
同軸をなし、かつシリンダー４からその一端側または他
端（図中左方。以下、単に「他端」と称する。）側に向
けそれぞれ伸縮自在に支持されたロッド５ａ，５ｂとか
ら概略構成されている。A pair of cylindrical jacks 3 are mounted on the propelling table 2 so that their axes are parallel to the longitudinal direction of the propelling table 2. Here, the jack 3 has a cylindrical shape, and is mounted coaxially with the cylinder 4 and a cylinder 4 movably mounted on the propelling base 2 along its own axis. It is roughly configured by rods 5a and 5b that are respectively supported to extend and contract toward the end (the left side in the drawing; hereinafter simply referred to as "the other end") side.
【０００５】符号５ｂで示すロッドの先端には、平板状
をなす押輪（接合部材）６が立設された状態で固定され
ている。この押輪６には、推進すべき管（後述）９を管
推進装置に設置した場合に管９と同軸をなす孔６ａが形
成され、かつ孔６ａの内径は、管９の外径より大径とさ
れている。また、孔６ａには、円環状をなす当輪７が他
端側から同軸をなすよう径合され、かつ当輪７の一端方
向への移動は、孔６ａより大径の拡径部７ａにより阻止
されている。一方、拡径部７ａの他端側は、その外径が
管９の内径より小径とされた縮径部７ｂとされている。A push ring (joint member) 6 having a flat plate shape is fixed to the tip of the rod shown by the reference numeral 5b in a standing state. A hole 6a that is coaxial with the pipe 9 when a pipe (to be described later) 9 to be propelled is installed in the pipe propulsion device is formed in the push ring 6, and the inner diameter of the hole 6a is larger than the outer diameter of the pipe 9. It is said that. Further, a ring-shaped abutment wheel 7 is fitted into the hole 6a so as to be coaxial from the other end side, and the movement of the abutment wheel 7 toward one end is caused by the enlarged diameter portion 7a having a diameter larger than that of the hole 6a. It has been blocked. On the other hand, the other end of the expanded diameter portion 7a is a reduced diameter portion 7b having an outer diameter smaller than the inner diameter of the tube 9.
【０００６】推進台２の一端側には、枠状をなす組立式
の押角（反力受け部材）８が立設され、その中央部に
は、管９を管推進装置に設置した場合に管９が押角８を
挿通自在となるよう開口部８ａが形成されている。この
押角８は、推進台２の一端部に着脱自在に支持され、か
つ押角８の他端側の端面には、符号５ａで示すロッドの
先端が当接されている。その結果、ジャッキ３の一端方
向への移動は、推進台２により阻止される。A frame-shaped, assembly-type push angle (reaction force receiving member) 8 is erected on one end side of the propulsion base 2, and a pipe 9 is installed at the center thereof when the pipe 9 is installed in the pipe propulsion device. An opening 8a is formed so that 9 can insert the pushing angle 8 freely. The push angle 8 is detachably supported on one end of the propulsion base 2, and the tip end of the rod indicated by reference numeral 5a is in contact with the end face on the other end side of the push angle 8. As a result, the movement of the jack 3 toward the one end is blocked by the propelling base 2.
【０００７】一方、符号５ｂで示すロッドの先端に設け
られた当輪７の縮径部７ｂには、上述した管９の一端が
径合され、かつ管９の他端側は、推進台２の他端側に設
けられた管受１０により下方から支持される。その結
果、管９は、管推進装置にジャッキ３の軸線と平行に載
置される。ここで、管９には、主として直径８００ｍｍ
以下の、鋼管、ヒューム管、あるいは塩化ビニール管等
が使用される。On the other hand, one end of the above-mentioned pipe 9 is fitted into the reduced diameter portion 7b of the abutment wheel 7 provided at the tip of the rod indicated by the reference numeral 5b, and the other end side of the pipe 9 is at the propelling base 2 It is supported from below by a pipe receiver 10 provided on the other end side of the. As a result, the pipe 9 is placed on the pipe propulsion device parallel to the axis of the jack 3. Here, the pipe 9 mainly has a diameter of 800 mm.
The following steel pipes, fume pipes, vinyl chloride pipes, etc. are used.
【０００８】 横坑内に管９を推進させる場合には、ま
ず、管推進装置に図８および図９に示すように管９を載
置し、次いで、管９の他端に、管９とほぼ同径の掘削工
具（図示せず。）を、管９と同軸をなし、かつその先端
が他端側を向くよう設置する。また、掘削工具の駆動軸
は、押輪６および当輪７を介して管９内に挿通される。[0008] When the next downhole propel the tube 9, first, the tube 9 as shown in FIGS. 8 and 9 placed in the tube propulsion device, then the other end of the tube 9, substantially with the tube 9 the drilling tool of the same diameter (not shown.), it forms a tube 9 coaxial, and its tip is placed to face the other end side. Further, the drive shaft of the excavating tool is inserted into the pipe 9 via the push wheel 6 and the contact wheel 7.
【０００９】この状態で掘削工具を駆動し、かつジャッ
キ３を伸長させると、掘削工具および管９が図中矢印Ａ
に沿って他端方向に移動し、掘削工具により竪孔１の他
端側の側面１ｂが掘削されるとともに、管９が側面１ｂ
内に挿入される。その結果、側面１ｂには、周囲が管９
で覆われた横坑が形成される。横坑が長い場合には、必
要に応じて管９および駆動軸を継ぎ足す。When the excavating tool is driven and the jack 3 is extended in this state, the excavating tool and the pipe 9 are moved to the arrow A in the figure.
The side surface 1b on the other end side of the vertical hole 1 is excavated by the excavating tool, and the pipe 9 is moved to the side surface 1b.
Inserted inside. As a result, the side surface 1b is surrounded by the pipe 9
A side pit covered with is formed. When the shaft is long, the pipe 9 and the drive shaft are added as needed.
【００１０】一方、横坑内における障害物等の存在によ
り、一度横坑内に挿入された掘削工具を、管９ごと横坑
から引き抜かねばならない場合がある。この場合、その
ままの状態でジャッキ３に管９を固定し、ジャッキ３を
収縮させることにより管９を引き抜くことも考えられる
が、ジャッキ３の収縮により発生するトルクは伸長によ
り発生するトルクの数分の一に過ぎず、特に管９の引き
抜きには不向きである。On the other hand, due to the existence of obstacles and the like in the side pit, the excavation tool once inserted in the side pit may have to be extracted from the side pit together with the pipe 9. In this case, it is conceivable that the pipe 9 is fixed to the jack 3 in that state and the pipe 9 is pulled out by contracting the jack 3, but the torque generated by the contraction of the jack 3 is equal to the torque generated by the expansion. However, it is not suitable for pulling out the tube 9.
【００１１】従って、この場合には、まず、ジャッキ３
を収縮させて当輪７を外し、ジャッキ３を推進台２上か
ら取り外す。次いで、推進台２の他端側の端面を、竪坑
１の他端側の側面１ｂに当接させるとともに、押角８の
立設位置を推進台２の一端側から他端側に移す。Therefore, in this case, first, the jack 3
Is contracted to remove the wheel 7, and the jack 3 is removed from the propelling base 2. Next, the other end side surface of the propulsion base 2 is brought into contact with the side surface 1b on the other end side of the vertical shaft 1, and the standing position of the pushing angle 8 is moved from one end side of the propulsion base 2 to the other end side.
【００１２】 そして、ジャッキ３を、上記図８および
図９に示した場合とは逆の向きとなるよう推進台２上に
載置し、押角８の一端側の端面に、符号５ａで示すロッ
ドの先端を当接させるとともに、開口部８ａおよび孔６
ａに管９を挿通させる。更に、管９の一端面が押輪６の
他端面と同一面をなすようジャッキ３の位置を調節する
とともに、管９の一端面に、掘削工具の駆動軸の一端側
に設けられた引っ張り部材（図示せず）を介して、孔６
ａより大径の円盤状をなす係止部材１５を一端側から取
り付ける。この状態を図１０に示す。Then, the jack 3 is placed on the propulsion base 2 in the opposite direction to that shown in FIGS. 8 and 9, and the rod 5a is attached to the end face of the pushing angle 8 on one end side. Abutting the tips of the holes, and opening 8a and hole 6
The tube 9 is inserted through a. Furthermore, with one end surface of the pipe 9 to adjust the position of the jack 3 to form a second end surface and the same surface of the pressing ring 6, on one end face of the pipe 9, tensile provided at one side of the drive shaft of the drilling tool member ( Through hole 6 (not shown)
A disc-shaped locking member 15 having a diameter larger than a is attached from one end side. This state is shown in FIG.
【００１３】図１０の状態でジャッキ３を伸長させる
と、管９に取り付けられた係止部材１５が押輪６の一端
面により図中矢印Ｂ方向に押圧され、それに伴い管９が
図中矢印Ｂに沿って一端方向に移動する。その結果、横
坑内に挿入された掘削工具が、管９ごと横坑から引き抜
かれる。When the jack 3 is extended in the state shown in FIG. 10, the locking member 15 attached to the tube 9 is pressed by the one end surface of the push ring 6 in the direction of arrow B in the figure, and accordingly the tube 9 is shown in arrow B. Move in one direction along. As a result, the excavation tool inserted in the side shaft is pulled out of the side shaft together with the pipe 9.
【００１４】また、竪孔１の一端側の側面１ａと他端側
の側面１ｂの双方に同様の横坑を形成する場合には、ま
ず、図８および図９で示した状態で側面１ｂに対する横
坑の形成を行う。次いで、側面１ｂに対する横坑の形成
終了後、ロッド５ａ，５ｂを収縮させてジャッキ３を取
り外し、推進台２および押角８を推進台２の他端側に移
す。When forming a similar shaft on both the side surface 1a on the one end side and the side surface 1b on the other end side of the vertical hole 1, first, with respect to the side surface 1b in the state shown in FIGS. Form a side shaft. Then, after the formation of the horizontal shaft on the side surface 1b is completed, the rods 5a and 5b are contracted to remove the jack 3, and the propulsion base 2 and the pushing angle 8 are transferred to the other end side of the propulsion base 2.
【００１５】 そして、ジャッキ３を逆向きに推進台２
上に載置し、押角８の一端側の端面に、符号５ａで示す
ロッドの先端を当接させるとともに、符号５ｂで示すロ
ッドの先端に、押輪６および当輪７を介して管９の他端
を径合させ、管９を、管推進装置にジャッキ３の軸線と
平行に載置する。更に、管９の一端に掘削工具を設置
し、この掘削工具を駆動しつつジャッキ３を伸長させる
と、掘削工具および管９が一端方向に移動し、側面１ａ
に、周囲が管９で覆われた横坑が形成される。Then, the jack 3 is reversed to the propelling base 2
The tip of the rod indicated by reference numeral 5a is placed on the end face of the pushing angle 8 on one end side, and the tip of the rod indicated by reference numeral 5b is attached to the other end of the pipe 9 via the push ring 6 and the contact ring 7. The ends are brought together and the tube 9 is placed on the tube propulsion device parallel to the axis of the jack 3. Further, when the excavating tool is installed at one end of the pipe 9 and the jack 3 is extended while driving the excavating tool, the excavating tool and the pipe 9 move toward one end, and the side surface 1a
A horizontal shaft is formed on the periphery of which the pipe 9 is covered.
【００１６】[0016]
【発明が解決しようとする課題】しかしながら、上記従
来の管推進装置およびこの管推進装置を用いた横坑の管
推進工法においては、特に、一度横坑内に挿入された掘
削工具を管９ごと横坑から引き抜いたり、竪孔１の一端
側の側面１ａのみならず他端側の側面１ｂにも同様の横
坑を形成するために、推進台２に対する押角８の設置位
置を、その都度推進台２の一端側から他端側またはその
逆に移し換え、かつジャッキ３を一旦推進台２上から取
り外した後、逆向きにして再度推進台２上に載置する必
要がある。However, in the above-mentioned conventional pipe propulsion apparatus and the method for propulsion of a horizontal shaft using this pipe propulsion apparatus, in particular, the excavating tool once inserted into the horizontal shaft is laterally moved along with the pipe 9. In order to pull out from the shaft or to form a similar horizontal shaft not only on the side surface 1a on one end side of the vertical hole 1 but also on the side surface 1b on the other end side, the installation position of the pushing angle 8 with respect to the propulsion table 2 is changed each time. It is necessary to transfer the jack 2 from one end side to the other end side or vice versa, remove the jack 3 from the propulsion base 2 once, and then reversely mount the jack 3 on the propulsion base 2.
【００１７】ところが、これらの作業には相対的に多大
な時間と人員を要し、かつ作業内容も煩雑であることか
ら、横坑の掘削に係る作業効率低下の一因となってい
た。本発明は上記事情に鑑みてなされたもので、管推進
装置を用いた横坑の掘削において、特に、掘削工具を管
９ごと横坑から引き抜く場合や、竪孔１の一端側の側面
１ａおよび他端側の側面１ｂに同様の横坑を形成する場
合に、その作業時間を短縮し、かつ作業内容を容易化す
ることをその目的としている。However, since these operations require a relatively large amount of time and personnel, and the details of the operations are complicated, this is one of the causes of a decrease in the work efficiency related to excavation of the side shaft. The present invention has been made in view of the above circumstances, and particularly when excavating a horizontal shaft using a pipe propulsion device, particularly when the excavation tool is pulled out of the horizontal shaft together with the pipe 9, and the side surface 1a on one end side of the vertical hole 1 and When forming a similar horizontal shaft on the side surface 1b on the other end side, the purpose thereof is to shorten the working time and facilitate the work content.
【００１８】[0018]
【課題を解決するための手段】本発明の管推進装置は、
軸線方向に伸縮自在なジャッキが少なくとも一対所定間
隔で平行に配設され、前記ジャッキと平行に配置された
管を、前記ジャッキの軸線に沿って移動させる管推進装
置において、特に、前記ジャッキの両端に、前記管の端
部と接合可能な接合部材がそれぞれ取り付けられている
ことを構成上の主たる特徴としている。The pipe propulsion device of the present invention comprises:
A pipe propulsion device in which at least a pair of axially expandable and contractible jacks are arranged in parallel at a predetermined interval, and a pipe arranged in parallel with the jack is moved along the axis of the jack, and particularly, both ends of the jack. The main feature of the construction is that a joining member that can be joined to the end portion of the pipe is attached to each.
【００１９】この場合、前記ジャッキの軸線に沿って基
台が延設され、更に、この基台の両端には、前記管が挿
通自在とされ、かつ前記接合部材の端面と当接し、前記
管の移動に伴い生じる反力を前記接合部材を介して受け
る反力受け部材がそれぞれ設置されていることが望まし
い。In this case, a base is extended along the axis of the jack, and the pipe can be inserted into both ends of the base and abuts on the end surface of the joining member, It is desirable that each reaction force receiving member that receives the reaction force generated by the movement of the contact member is installed via the joining member.
【００２０】また、本発明の管推進工法は、上記の管推
進装置を用いたもので、特に、前記ジャッキの両端にそ
れぞれ取り付けれられた接合部材の一方に前記管を接合
させ、かつこれら接合部材の他方にて前記ジャッキを支
持しつつ前記ジャッキを伸長し、前記管を移動させるこ
とを主たる特徴としている。The pipe propulsion method of the present invention uses the above-mentioned pipe propulsion device. In particular, the pipe is joined to one of the joining members attached to both ends of the jack, and these joining members are joined together. On the other hand, the main feature is to extend the jack while supporting the jack and move the pipe.
【００２１】[0021]
【作用】本発明の管推進装置においては、ジャッキの両
端に、管の端部と接合可能な接合部材がそれぞれ取り付
けられている。そのため、これら接合部材のいずれか一
方に前記管を連結させ、かつ他方にて前記ジャッキを支
持しつつ前記ジャッキを伸長させるだけで、前記管を前
記一端または他端方向に移動させることが可能である。
その結果、前記管の移動方向を、短時間でしかも容易に
一端側から他端側またはその逆に変換することができ
る。In the pipe propulsion device of the present invention, the joining members that can be joined to the ends of the pipe are attached to both ends of the jack. Therefore, it is possible to move the pipe toward the one end or the other end only by connecting the pipe to one of these joining members and extending the jack while supporting the jack on the other side. is there.
As a result, the moving direction of the pipe can be easily converted from one end side to the other end side or vice versa in a short time.
【００２２】[0022]
【実施例】以下、図面に基づき、本発明の実施例につい
て更に詳しく説明する。なお、以下の図において、上記
図８ないし図１０と類似の構成を有する部分には、同一
の符号を付してその説明を省略する。Embodiments of the present invention will now be described in more detail with reference to the drawings. Note that, in the following figures, parts having similar configurations to those in FIGS. 8 to 10 are designated by the same reference numerals and the description thereof will be omitted.
【００２３】本発明に係る管推進装置の構造の例を図１
および図２に示す。なお、図１および図２の例は、いず
れも、管を図中矢印Ａ方向に沿って横坑内に挿入する場
合を想定したものである。FIG. 1 shows an example of the structure of the pipe propulsion device according to the present invention.
And shown in FIG. In addition, in each of the examples of FIGS. 1 and 2, the case where the pipe is inserted into the shaft along the direction of arrow A in the drawing is assumed.
【００２４】シリンダー４からその一端側または他端側
に向けそれぞれ伸縮自在に支持されたロッド５ａ，５ｂ
の先端には、押輪６がそれぞれ立設された状態で着脱自
在に支持されている。また、これら押輪６の側面には、
左右一対の係止突起１１が、その先端を押輪６の端面か
らそれぞれロッド５ａ，５ｂの伸長方向に突出させた状
態で設置され、かつこれら係止突起１１の先端部には、
ジャッキ３の軸線と直交し、かつ水平方向に延びるピン
穴１１ａが形成されている。Rods 5a and 5b supported from the cylinder 4 so as to extend and contract toward one end side and the other end side thereof, respectively.
Pushing wheels 6 are detachably supported at the tip ends of the pressing wheels 6, respectively. Also, on the side surface of these push wheels 6,
A pair of left and right locking projections 11 are installed with their tips projecting from the end surface of the push ring 6 in the extending direction of the rods 5a and 5b, and the tip portions of these locking projections 11 are
A pin hole 11a is formed which is orthogonal to the axis of the jack 3 and extends in the horizontal direction.
【００２５】推進台２の両端側にはそれぞれ押角８が立
設され、かつこれら押角８は、両端に脚部１２ａが形成
された複数の反力受１２により推進台２に着脱自在に支
持され、かつこれら反力受１２の脚部１２ａは、それぞ
れ竪坑１の一端側の側面１ａまたは他端側の側面１ｂに
当接されている。その結果、推進台２の長手方向への移
動は、これら反力受１２により阻止されている。Pushing angles 8 are provided upright on both ends of the propulsion base 2, and these pushing angles 8 are detachably supported on the propulsion base 2 by a plurality of reaction force receivers 12 having legs 12a formed at both ends. The leg portions 12a of the reaction force receivers 12 are in contact with the side surface 1a on one end side or the side surface 1b on the other end side of the vertical shaft 1, respectively. As a result, movement of the propulsion base 2 in the longitudinal direction is blocked by these reaction force receivers 12.
【００２６】更に、押角８の側面には、左右一対のピン
穴１３が形成されているが、このピン穴１３の位置は、
押輪６と押角８の端面同士を当接させた場合に、係止突
起１１の先端部に形成されたピン穴１１ａとピン穴１３
とが同軸をなすよう設定されている。図１の場合、推進
台２の一端に支持された押角８の他端側の端面には、符
号５ａで示すロッドの先端に支持された押輪６の一端側
の端面が当接され、かつ両者のピン穴１１ａ，１３に
は、円柱状をなすピン１４が挿入される。その結果、推
進台２の一端に支持された押角８と、ロッド５ａの先端
に支持された押輪６とは、このピン１４を介して連結さ
れる。Further, a pair of left and right pin holes 13 are formed on the side surface of the pressing angle 8, and the position of these pin holes 13 is
When the end faces of the push wheel 6 and the push angle 8 are brought into contact with each other, the pin hole 11a and the pin hole 13 formed at the tip of the locking projection 11 are formed.
And are set to be coaxial. In the case of FIG. 1, the end face on the other end side of the pushing angle 8 supported on one end of the propulsion base 2 is in contact with the end face on the one end side of the push wheel 6 supported on the tip of the rod, which is indicated by reference numeral 5a, and A columnar pin 14 is inserted into each of the pin holes 11 a and 13. As a result, the pushing angle 8 supported at one end of the propulsion base 2 and the pushing wheel 6 supported at the tip of the rod 5 a are connected via this pin 14.
【００２７】 一方、符号５ｂで示すロッドの先端に支
持された押輪６の孔６ａには、円環状をなす当輪７が他
端側から同軸をなすよう径合されるとともに、当輪７の
縮径部７ｂには、管９の一端が径合されている。また、
管９の他端側は管受１０により下方から支持され、その
結果、管９は管推進装置にジャッキ３の軸線と平行に載
置される。On the other hand, an annular contact ring 7 is fitted into the hole 6a of the push ring 6 supported by the tip of the rod as indicated by the reference numeral 5b so as to be coaxial from the other end side, and the reduced diameter portion 7b of those wheels 7, the one end of the tube 9 are径合. Also,
Other end side of the tube 9 is supported from below by Kan受10, as a result, the tube 9 is parallel to mounted the axis of the jack 3 to the tube propulsion device.
【００２８】横坑内に管９を推進させる場合には、ま
ず、管推進装置に図１および図２に示すように管９を載
置し、次いで、上記従来の管推進装置と同様、管９の他
端に掘削工具（図示せず。）を設置し、掘削工具を駆動
しつつジャッキ３を伸長させる。すると、ジャッキ３の
伸長とともに掘削工具および管９が図中矢印Ａに沿って
他端方向に移動し、その結果、図３に示すように、側面
１ｂに、周囲が管９で覆われた横坑Ｈが形成される。When propelling the pipe 9 into the horizontal shaft, first, the pipe 9 is placed on the pipe propulsion device as shown in FIGS. 1 and 2, and then, like the conventional pipe propulsion device, the pipe 9 is placed. A drilling tool (not shown) is installed at the other end of the jack, and the jack 3 is extended while driving the drilling tool. Then, with the extension of the jack 3, the excavation tool and the pipe 9 move in the direction of the other end along the arrow A in the figure, and as a result, as shown in FIG. A pit H is formed.
【００２９】 また、一度横坑Ｈ内に挿入された掘削工
具を、管９ごと横坑Ｈから引き抜く場合には、まず、図
４中点線で示すようにジャッキ３を収縮させてロッド５
ｂの先端に支持された押輪６から当輪７を外すととも
に、ピン１４を抜き、推進台２の一端に支持された押角
８とロッド５ａの先端に支持された押輪６とを離間可能
とする。Further, once inserted drilling tool in Adit H, when withdrawn from each tube 9 Adit H, first, the rod 5 by the jack 3 is contracted as indicated by a dotted line in FIG. 4
The contact wheel 7 is removed from the push wheel 6 supported at the tip of b, and the pin 14 is pulled out so that the push angle 8 supported at one end of the propulsion base 2 and the push wheel 6 supported at the tip of the rod 5a can be separated from each other. .
【００３０】 次いで、ジャッキ３を、図４中点線で示
す位置から、推進台２に載置させたまま、ロッド５ｂの
先端に支持された押輪６の他端側の端面が推進台２の他
端に支持された押角８の一端側の端面に当接するまで、
図中矢印Ａに沿って他端方向に移動させる。Next, from the position shown by the dotted line in FIG. 4, the end surface of the push wheel 6 supported by the tip of the rod 5b on the other end side of the jack 3 is left on the propelling table 2 while the jack 3 is left on the propelling table 2. Until it comes into contact with the end face on one end side of the push angle 8 supported at the end,
Along the arrow A in the drawing is moved to the other end direction.
【００３１】押輪６の他端側の端面が押角８の一端側の
端面に当接したら、ピン穴１１ａ，１３にピン１４を径
合し、推進台２の他端に支持された押角８と、ロッド５
ｂの先端に支持された押輪６とを連結する。そして、管
９の一端面がロッド５ａの先端に支持された押輪６の他
端面と同一面をなすまでジャッキ３を伸長させるととも
に、上記従来の管推進装置と同様、管９の一端面に、引
っ張り部材（図示せず）を介して、一端側から係止部材
１５を取り付ける。この状態を図４に示す。When the end surface of the push wheel 6 on the other end side comes into contact with the end surface of the push angle 8 on one end side, the pin 14 is fitted into the pin holes 11a and 13 to form the push angle 8 supported on the other end of the propulsion base 2. , Rod 5
The push ring 6 supported at the tip of b is connected. Then, the jack 3 is extended until one end face of the pipe 9 is flush with the other end face of the push ring 6 supported by the tip of the rod 5a, and at the same time as the conventional pipe propulsion device, one end face of the pipe 9 is The locking member 15 is attached from one end side via a pulling member (not shown). This state is shown in FIG.
【００３２】図４の状態でジャッキ３を伸長させると、
管９に取り付けられた係止部材１５が押輪６の一端面に
より図中矢印Ｂ方向に押圧され、それに伴い管９が図中
矢印Ｂに沿って一端方向に移動する。その結果、図５に
示すように、横坑Ｈ内に挿入された掘削工具が、管９ご
と横坑Ｈから引き抜かれる。When the jack 3 is extended in the state of FIG. 4,
The locking member 15 attached to the pipe 9 is pressed in the direction of the arrow B in the figure by the one end surface of the push wheel 6, and accordingly the pipe 9 moves in the direction of the one end along the arrow B in the figure. As a result, as shown in FIG. 5, the excavation tool inserted into the shaft H is pulled out of the shaft H together with the pipe 9.
【００３３】このように、本実施例の管推進装置によれ
ば、押角８の設置位置を推進台２の一端側から他端側ま
たはその逆に移し換えたり、ジャッキ３を一旦推進台２
上から取り外した後、逆向きにして再度推進台２上に載
置させたりせずとも、掘削工具を管９ごと横坑から引き
抜くことができる。その結果、作業時間が短縮し、かつ
作業内容が容易化される。As described above, according to the pipe propulsion apparatus of this embodiment, the installation position of the push angle 8 is moved from one end side of the propulsion base 2 to the other end side or vice versa, or the jack 3 is once moved to the propulsion base 2.
The excavating tool together with the pipe 9 can be pulled out from the side pit without removing it from the top and then placing it on the propulsion table 2 again in the opposite direction. As a result, the work time is shortened and the work content is facilitated.
【００３４】一方、竪孔１の一端側の側面１ａと他端側
の側面１ｂの双方に同様の横坑を形成する場合には、ま
ず、図１および図２で示した状態で、側面１ｂに対する
横坑の形成を行う。そして、側面１ｂに対する横坑の形
成終了後、ジャッキ３を収縮させて当輪７を外すととも
に、推進台２の一端に支持された押角８とロッド５ａの
先端に支持された押輪６とを連結するピン１４を抜く。On the other hand, when forming a similar shaft on both the side surface 1a on one end side and the side surface 1b on the other end side of the vertical hole 1, first, in the state shown in FIGS. 1 and 2, the side surface 1b is formed. Form a shaft for After the formation of the side shaft on the side surface 1b, the jack 3 is contracted to remove the contact wheel 7, and the pushing angle 8 supported at one end of the propulsion base 2 and the pushing wheel 6 supported at the tip of the rod 5a are connected. Remove the pin 14.
【００３５】 次いで、ロッド５ｂの先端に支持された
押輪６の他端側の端面が、推進台２の他端に支持された
押角８の一端側の端面に当接するまで、ジャッキ３を他
端方向に移動させた後、ピン穴１１ａ，１３にピン１４
を径合し、推進台２の他端に支持された押角８と、ロッ
ド５ｂの先端に支持された押輪６とを連結する。更に、
ロッド５ａの先端に支持された押輪６の一端面に当輪７
を介して管９の他端を径合させ、管９を、管推進装置に
ジャッキ３の軸線と平行に載置する。[0035] Then, until the end of the other end face of the pressing ring 6 which is supported on the tip of the rod 5b abuts against the end face of one end side of Oshikaku 8 supported by the other end of the propulsion stage 2, the other jack 3 <br /> After moving to the end direction, the pin 14 is inserted into the pin holes 11a and 13
The push angle 8 supported by the other end of the propulsion base 2 is connected to the push wheel 6 supported by the tip of the rod 5b. Furthermore,
The pushing wheel 6 supported on the tip of the rod 5a is attached to one end surface of the pushing wheel 7
The other end of the pipe 9 is fitted through the pipe 9, and the pipe 9 is placed on the pipe propulsion device in parallel with the axis of the jack 3.
【００３６】そして、管９の一端に掘削工具を設置し、
この掘削工具を駆動しつつジャッキ３を伸長させると、
掘削工具および管９が一端方向に移動し、側面１ａに、
周囲が管９で覆われた横坑が形成される。Then, a drilling tool is installed at one end of the pipe 9,
When the jack 3 is extended while driving this excavating tool,
The drilling tool and the pipe 9 move toward one end, and on the side surface 1a,
A horizontal shaft is formed, the periphery of which is covered with a pipe 9.
【００３７】従って、推進台２に対する押角８の設置位
置を推進台２の一端側から他端側またはその逆に移し換
えたり、ジャッキ３を一旦推進台２上から取り外した
後、逆向きにして再度推進台２上に載置させたりせずと
も、竪孔１の一端側の側面１ａと他端側の側面１ｂの双
方に同様の横坑を形成させることができる。よって、こ
の場合でも、作業時間が短縮し、かつ作業内容が容易化
される。Therefore, the installation position of the push angle 8 with respect to the propulsion base 2 is changed from one end side of the propulsion base 2 to the other end side or vice versa, or after the jack 3 is once removed from the propulsion base 2, it is reversed. Even if it is not placed on the propulsion base 2 again, the same horizontal shaft can be formed on both the side surface 1 a on one end side and the side surface 1 b on the other end side of the vertical hole 1. Therefore, even in this case, the work time is shortened and the work content is facilitated.
【００３８】なお、上記実施例においては、図６に示す
ように、押輪６として、平板状をなし、その中央部に、
管９の外径より大径をなす孔６ａを、管９を管推進装置
に設置した場合に管９と同軸をなすよう形成したものを
用いたが、必要に応じ、図７に示すように、押輪６に、
中央部に管９の外径より大径かつ下方に開口するＵ字溝
６ｂを形成し、このＵ字溝６ｂ内に下方から当輪７を径
合させてもよい。この場合、図６に示す押輪６に比べ、
管９の挿通や、当輪７の径合が容易となる。In the above embodiment, as shown in FIG. 6, the push ring 6 has a flat plate shape, and its central portion is
The hole 6a having a diameter larger than the outer diameter of the pipe 9 was formed so as to be coaxial with the pipe 9 when the pipe 9 was installed in the pipe propulsion device. However, as shown in FIG. , On the push ring 6,
A U-shaped groove 6b having a diameter larger than the outer diameter of the pipe 9 and opening downward may be formed in the center portion, and the wheel 7 may be fitted into the U-shaped groove 6b from below. In this case, compared to the push wheel 6 shown in FIG.
It becomes easy to insert the pipe 9 and fit the diameter of the wheel 7.
【００３９】また、上記実施例では、ジャッキ３として
左右一対のものが使用されているが、特に大径の管９を
用いた場合には、管９の重量に耐え、より高圧で管９の
推進を可能とするために、同一方向に伸縮自在な左右一
対のジャッキ３を、複数個上下に配置して使用すること
ももちろん可能である。Further, in the above embodiment, the left and right jacks 3 are used as the jacks 3. However, particularly when a large-diameter pipe 9 is used, the weight of the pipe 9 is tolerated and the pressure of the pipe 9 becomes higher. In order to enable propulsion, it is of course possible to use a pair of left and right jacks 3 which are extendable and retractable in the same direction, arranged one above the other.
【００４０】 例えば、図６および図７において、符号
６ｃおよび６ｄは、いずれも押輪６にシャフト３の先端
を嵌合させるための開口部であるが、図６の押輪６で
は、ジャッキ３として左右一対のものを使用するため、
孔６ａの左右にそれぞれ一箇所ずつの開口部６ｃが設け
られている。これに対し、図７の押輪６では、左右一対
のジャッキ３を上下に二段配置するため、Ｕ字溝６ｂの
左右に、開口部６ｄがそれぞれ二箇所ずつ設けられる。For example, in FIGS. 6 and 7, reference numerals 6c and 6d are both openings for fitting the tip of the shaft 3 to the push ring 6, but in the push ring 6 of FIG. Because we use a pair of things,
One opening 6c is provided on each of the left and right sides of the hole 6a. In contrast, in the pressing ring 6 in FIG. 7, for arranging two-stage right and left pair of jacks 3 up and down, right and left of the U-shaped groove 6 b, the opening 6d is provided by each two positions.
【００４１】一方、上記実施例においては、当輪７ある
いは係止部材１５の取り付けにより押輪６と管９とを連
結しているが、例えばチャック機構等を用いることによ
り押輪６に形成された孔６ａを縮径自在とし、この孔６
ａに管９を挿通させた状態で孔６ａを縮径することによ
り、押輪６と管９とを連結してもよい。また、上記実施
例においては、ピン穴１１ａ，１３にピン１４を挿入す
ることより押輪６と押角８とを連結しているが、押輪６
または押角８に設けた爪を、押角８または押輪６に設け
たシャフトまたは凹部に係合させることにより、両者を
連結させてもよい。On the other hand, in the above-mentioned embodiment, the push wheel 6 and the pipe 9 are connected by attaching the abutment wheel 7 or the locking member 15, but the hole formed in the push wheel 6 by using, for example, a chuck mechanism or the like. The diameter of 6a can be freely reduced, and this hole 6
The push ring 6 and the pipe 9 may be connected by reducing the diameter of the hole 6a with the pipe 9 inserted in a. Further, in the above-described embodiment, the push wheel 6 and the push angle 8 are connected by inserting the pin 14 into the pin holes 11a and 13;
Alternatively, the claws provided on the push angle 8 may be engaged with the shaft or the recess provided on the push angle 8 or the push wheel 6 to connect them.
【００４２】[0042]
【発明の効果】以上説明した通り、本発明に係る管推進
装置およびこの管推進装置を用いた管推進工法によれ
ば、横坑の掘削において、特に、掘削工具を管ごと横坑
から引き抜く場合や、竪孔の一端側の側面および他端側
の側面に同様の横坑を形成する場合に、押角の設置位置
や、ジャッキの向きを換える必要がない。そのため、作
業時間が短縮され、かつ作業内容が容易化される。As described above, according to the pipe propulsion device and the pipe propulsion method using the pipe propulsion device of the present invention, in excavating a shaft, especially when the excavating tool is pulled out of the shaft together with the pipe. Alternatively, when forming a similar horizontal shaft on the side surface on one end side and the side surface on the other end side of the vertical hole, it is not necessary to change the installation position of the pushing angle or the direction of the jack. Therefore, the work time is shortened and the work contents are facilitated.
【図１】本発明に係る管推進装置の構造の例を示す矢印
Ｉに沿った側面図である。FIG. 1 is a side view along an arrow I showing an example of the structure of a pipe propulsion device according to the present invention.
【図２】本発明に係る管推進装置の構造の例を示す矢印
ＩＩに沿った上面図である。FIG. 2 is a top view along an arrow II showing an example of the structure of the pipe propulsion device according to the present invention.
【図３】本発明に係る管推進装置による管の推進状況の
例を示す矢印Ｉに沿った側面図である。FIG. 3 is a side view taken along the arrow I showing an example of the propulsion state of a pipe by the pipe propulsion device according to the present invention.
【図４】本発明に係る管推進装置による管の引き抜き状
況の例を示す矢印Ｉに沿った側面図である。FIG. 4 is a side view along an arrow I showing an example of a pipe withdrawal state by the pipe propulsion device according to the present invention.
【図５】本発明に係る管推進装置による管の引き抜き状
況の例を示す矢印Ｉに沿った側面図である。FIG. 5 is a side view along an arrow I showing an example of a pipe withdrawal state by the pipe propulsion device according to the present invention.
【図６】本発明に係る管推進装置に使用される押輪の形
状の例を示すＶＩ−ＶＩ線に沿った断面図である。FIG. 6 is a cross-sectional view taken along line VI-VI showing an example of the shape of a push ring used in the pipe propulsion device according to the present invention.
【図７】本発明に係る管推進装置に使用される押輪の形
状の例を示すＶＩ−ＶＩ線に沿った断面図である。FIG. 7 is a cross-sectional view taken along line VI-VI showing an example of the shape of a push ring used in the pipe propulsion device according to the present invention.
【図８】従来の管推進装置の構造の例を示す矢印ＶＩＩ
Ｉに沿った側面図である。FIG. 8 is an arrow VII showing an example of the structure of a conventional tube propulsion device.
It is a side view along I.
【図９】従来の管推進装置の構造の例を示す矢印ＩＸに
沿った上面図である。FIG. 9 is a top view taken along the arrow IX showing an example of the structure of a conventional tube propulsion device.
【図１０】従来の管推進装置による管の引き抜き状況の
例を示す矢印ＶＩＩＩに沿った側面図である。FIG. 10 is a side view along an arrow VIII showing an example of a pipe withdrawal state by a conventional pipe propulsion device.
１ 竪坑 ２ 推進台 ３ ジャッキ ４ シリンダー ５ａ，５ｂ ロッド ６ 押輪 ６ａ 孔 ６ｂ Ｕ字溝 ６ｃ，６ｄ，８ａ 開口部 ７ 当輪 ７ａ 拡径部 ７ｂ 縮径部 ８ 押角 ９ 管 １０ 管受 １１ 係止突起 １１ａ，１３ ピン穴 １２ 反力受 １２ａ 脚部 １４ ピン １５ 係止部材 Ａ，Ｂ 管の移動方向 1 vertical shaft 2 propulsion platform 3 jacks 4 cylinders 5a, 5b rod 6 push ring 6a hole 6b U-shaped groove 6c, 6d, 8a openings 7 Current wheel 7a Expanding part 7b Reduced diameter part 8 push angle 9 tubes 10 management 11 Locking protrusion 11a, 13 pin holes 12 Reaction force reception 12a legs 14 pin 15 Locking member Direction of movement of A and B pipes
Claims (10)
も一対所定間隔で平行に配設され、前記ジャッキと平行
に配置された管を、前記ジャッキの軸線に沿って移動さ
せる管推進装置において、前記ジャッキの両端に、前記
ジャッキ間に掛け渡され、かつ前記管の端部と接合可能
な接合部材がそれぞれ取り付けられていることを特徴と
する管推進装置。1. A pipe propulsion device in which at least a pair of axially expandable and contractible jacks are arranged in parallel at a predetermined interval, and a pipe arranged in parallel with the jack is moved along the axis of the jack. A pipe propulsion device, characterized in that, at both ends of the jack, joining members that are laid between the jacks and that can be joined to the ends of the pipe are attached.
れ、この基台の両端には、前記管が挿通自在とされ、か
つ前記接合部材の端面と当接し、前記管の移動に伴い発
生する反力を前記接合部材を介して受ける反力受け部材
がそれぞれ設置されていることを特徴とする請求項１記
載の管推進装置。2. A base is extended along an axis of the jack, and the pipe can be inserted into both ends of the base and abuts on an end face of the joining member to move the pipe. 2. The pipe propulsion device according to claim 1, wherein reaction force receiving members that receive the reaction force generated by the connection members via the joining members are installed.
とされ、かつこの押輪の端面が、前記管の端面に当接さ
れる当輪を介して前記管と接合可能とされていることを
特徴とする請求項１または２記載の管推進装置。3. The joining member is a push wheel through which the pipe can be inserted, and the end surface of the push wheel can be joined to the pipe through a contact ring that is in contact with the end surface of the pipe. The pipe propulsion device according to claim 1 or 2, characterized in that:
部材が設置され、かつ前記管と前記接合部材とが、前記
管を前記接合部材の基端側から前記接合部材に挿通させ
た状態で、前記接合部材の先端側から前記引っ張り部材
に係止された係止部材により接合可能とされ、 前記ジャッキの一方の端にて前記管の一方の端部を支持
しつつ前記ジャッキを伸長させることにより、予め前記
ジャッキの他方側に移動された前記管を前記ジャッキの
一方側に移動させることを特徴とする請求項１または２
記載の管推進装置。4. A state in which a pulling member coaxial with the pipe is installed in the pipe, and the pipe and the joining member are inserted into the joining member from the base end side of the joining member. in is possible joined by the locking member which is engaged with the tension member from the tip of the joining member, supporting one end portion of the tube at one end of the jack
By extending the jack while
Connect the pipe moved to the other side of the jack to the jack
It moves to one side, The claim 1 or 2 characterized by the above-mentioned.
The described pipe propulsion device.
在とされたシリンダーと、このシリンダーと同軸をな
し、かつ前記シリンダーの両端の少なくとも一方に向け
伸縮自在とされたロッドとを有することを特徴とする請
求項１，２，３または４記載の管推進装置。5. The jack has a cylinder movable along its axis and a rod coaxial with the cylinder and extendable toward at least one of both ends of the cylinder. The pipe propulsion device according to claim 1, 2, 3 or 4.
も一対所定間隔で平行に配設し、これらジャッキと平行
に配置された管を前記ジャッキの軸線に沿って移動させ
る管推進工法であって、 前記ジャッキの他端にて前記管の一端部を支持し、かつ
前記ジャッキの一端にて前記ジャッキを支持しつつ前記
ジャッキを伸長させることにより、前記管を前記ジャッ
キの他端側に移動させた後、前記管の支持を解除して前
記ジャッキを収縮させ、次に、移動された前記管の一端
部を前記ジャッキの他端にて支持し、かつ前記ジャッキ
の一端にて前記ジャッキを支持しつつ前記ジャッキを伸
長させることにより、前記他端側に移動された管をさら
に前記ジャッキの他端側に移動させる工程とを有するこ
とを特徴とする管推進工法において、 前記管が、前記ジャッキの両端にてそれぞれ前記ジャッ
キ間に掛け渡され、かつ前記管の端部と接合可能な接合
部材を介して前記ジャッキに支持される ことを特徴とす
る管推進工法。6. A pipe propulsion method in which at least a pair of axially expandable and contractible jacks are arranged in parallel at predetermined intervals, and pipes arranged in parallel with the jacks are moved along the axis of the jack . by extending the jack while supporting the jack at one end supports a, and one end of the jack of the tube at the other end of the jack, move the tube to the other end of the jack And then release the support of the pipe before
The serial jack is contracted, then, an end portion of the moved the tube supported at the other end of the jack, and by extending the jack while supporting the jack at one end of the jack, Add the pipe that was moved to the other end side.
To the pipe jacking method, characterized in that it comprises a step of moving the other end of the jack, said tube, said respective at both ends of the jack jack
Joint that can be joined between the pipe and the end of the pipe
A pipe propulsion method characterized by being supported by the jack through a member .
って延設された基台の両端に前記管が挿通自在となるよ
うそれぞれ設置された反力受け部材と、前記接合部材の
端面との当接により支持されることを特徴とする請求項
６記載の管推進工法。7. The reaction force receiving member and the joining member , wherein the jack is installed at both ends of a base extending along the axis of the jack so that the pipe can be inserted therethrough .
It is supported by abutting against the end face.
The pipe propulsion method described in 6 .
た押輪で、かつこの押輪の先端面が、前記管の端面に当
接される当輪を介して前記管と接合されることを特徴と
する請求項６または７記載の管推進工法。8. The joining member is a push ring through which the pipe can be inserted, and the tip end face of the push ring is joined to the pipe through a contact ring that abuts on the end face of the pipe. The pipe propulsion method according to claim 6 or 7 .
接合部材の基端側から前記接合部材に挿通させた状態
で、前記管内に設置された引っ張り部材に前記接合部材
の端側から係止された係止部材により接合され、前記ジャッキの一方の端にて前記管の一方の端部を支持
しつつ前記ジャッキを伸長させることにより、予め前記
ジャッキの他方側に移動された前記管を前記ジャッキの
一方側に移動させることを特徴とする請求項６または７
記載の管推進工法。9. The joining member is attached to a pulling member installed in the pipe in a state where the pipe and the joining member are inserted into the joining member from the base end side of the joining member.
Is joined by a locking member that is locked from the end side of the pipe, and one end of the jack supports one end of the pipe.
By extending the jack while
Connect the pipe moved to the other side of the jack to the jack
8. The method according to claim 6 or 7, characterized in that it is moved to one side.
The described pipe propulsion method.
自在とされたシリンダーと、このシリンダーと同軸をな
し、かつ前記シリンダーの両端の少なくとも一方に向け
伸縮自在とされたロッドとを有することを特徴とする請
求項６，７，８または９記載の管推進工法。10. The jack has a cylinder movable along its axis and a rod coaxial with the cylinder and extendable toward at least one of both ends of the cylinder. The pipe propulsion method according to claim 6, 7, 8 or 9 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07362994A JP3481668B2 (en) | 1994-04-12 | 1994-04-12 | Pipe propulsion device and pipe propulsion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07362994A JP3481668B2 (en) | 1994-04-12 | 1994-04-12 | Pipe propulsion device and pipe propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07279584A JPH07279584A (en) | 1995-10-27 |
| JP3481668B2 true JP3481668B2 (en) | 2003-12-22 |
Family
ID=13523804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07362994A Expired - Fee Related JP3481668B2 (en) | 1994-04-12 | 1994-04-12 | Pipe propulsion device and pipe propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3481668B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653498A (en) * | 2021-09-24 | 2021-11-16 | 湖南健伟通机械设备有限公司 | Pushing device |
| CN114294474B (en) * | 2022-03-03 | 2022-05-20 | 山西太水市政工程有限公司 | Jacking pipe system with positioning function and construction method thereof |
-
1994
- 1994-04-12 JP JP07362994A patent/JP3481668B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07279584A (en) | 1995-10-27 |
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