JPH06323080A - Excavating method - Google Patents
Excavating methodInfo
- Publication number
- JPH06323080A JPH06323080A JP11727793A JP11727793A JPH06323080A JP H06323080 A JPH06323080 A JP H06323080A JP 11727793 A JP11727793 A JP 11727793A JP 11727793 A JP11727793 A JP 11727793A JP H06323080 A JPH06323080 A JP H06323080A
- Authority
- JP
- Japan
- Prior art keywords
- excavating
- excavation
- ground
- excavated soil
- excavated
- 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.)
- Pending
Links
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地盤に掘削穴を形成す
るための掘削方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavation method for forming an excavation hole in the ground.
【０００２】[0002]
【従来の技術】従来、地盤を掘削するには、例えばアー
スオーガーのような掘削機により地盤を掘削しながら掘
削土砂をアースオーガーの外周部の螺旋状部により上方
に移送し、地上に掘削土砂を排出するようにしている。2. Description of the Related Art Conventionally, to excavate the ground, excavating the ground while excavating the ground with an excavator such as an earth auger, the excavated earth and sand are transferred upward by a spiral portion on the outer periphery of the earth auger to be excavated on the ground. Is to be discharged.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記の従来
例においては、掘削に当たり先端のビットに掘削土が付
着して掘削効率が悪くなり、また、掘削土が螺旋状部に
付着して掘削土を上方に移動する効率が悪くなるという
問題があり、これらの理由により掘削に時間がかかり、
また、掘削土を効率良く地上に排出することができなか
った。However, in the above-mentioned conventional example, when excavating, excavating soil adheres to the bit at the tip to deteriorate excavation efficiency, and in addition, excavating soil adheres to the spiral portion to excavate soil. There is a problem that the efficiency of moving upwards becomes poor, and for these reasons it takes time to excavate,
Moreover, the excavated soil could not be efficiently discharged to the ground.
【０００４】本発明は上記の従来例の問題点に鑑みて発
明したものであって、その目的とするところは、掘削土
が掘削手段に付着しにくく掘削効率が低下せず、また、
掘削土移動手段に付着しにくく、効率良く掘削土を地上
に排出できて、掘削時間も短縮できる掘削方法を提供す
るにある。The present invention has been made in view of the above-mentioned problems of the prior art. The purpose of the present invention is to prevent excavated soil from adhering to excavation means and to prevent a decrease in excavation efficiency.
An object of the present invention is to provide an excavation method that is unlikely to adhere to excavated soil moving means, can efficiently excavate excavated soil to the ground, and can shorten excavation time.
【０００５】[0005]
【課題を解決するための手段】上記従来例の問題点を解
決して本発明の目的を達成するため、本発明の掘削方法
は、掘削機１に設けた掘削手段３により地盤２を掘削す
るに当たり、掘削機１に電流を通電しながら掘削するこ
とを特徴とする方法とした。また、地盤２を掘削するた
めの掘削手段３と掘削した掘削土を地上に移送するため
の掘削土移送手段４とを備えた掘削機１により地盤２を
掘削しながら掘削土を地上に排出する際に、掘削機１に
電流を通電することも好ましい。In order to solve the problems of the conventional example and to achieve the object of the present invention, the excavation method of the present invention excavates the ground 2 by the excavation means 3 provided in the excavator 1. In this regard, the method is characterized by excavating while applying current to the excavator 1. Further, the excavator 1 provided with the excavating means 3 for excavating the ground 2 and the excavating soil transferring means 4 for transferring the excavated soil to the ground discharges the excavated soil to the ground while excavating the ground 2. At this time, it is also preferable to supply a current to the excavator 1.
【０００６】また、掘削機１に設けた掘削手段３により
地盤２を掘削するに当たり、地盤２の掘削しようとする
部分の近傍に挿入した電極材７が正極、掘削機１の掘削
手段３側が負極となるように電流を通電しながら掘削す
ることも好ましい。When excavating the ground 2 by the excavation means 3 provided in the excavator 1, the electrode material 7 inserted near the portion of the ground 2 to be excavated is a positive electrode, and the excavation means 3 side of the excavator 1 is a negative electrode. It is also preferable to excavate while applying a current so that
【０００７】[0007]
【作用】しかして、本発明によれば、掘削機１に設けた
掘削手段３により地盤２を掘削するに当たり、掘削機１
に電流を通電しながら掘削することで、掘削機１の掘削
手段３に掘削土が付着しにくいようにし、このことによ
り、掘削効率を向上させるようにしている。According to the present invention, therefore, when excavating the ground 2 by the excavation means 3 provided in the excavator 1, the excavator 1
By excavating while applying a current to the excavator 3, excavated soil is less likely to adhere to the excavation means 3 of the excavator 1, and thus excavation efficiency is improved.
【０００８】また、地盤２を掘削するための掘削手段３
と掘削した掘削土を地上に移送するための掘削土移送手
段４とを備えた掘削機１により地盤２を掘削しながら掘
削土を地上に排出する際に、掘削機１に電流を通電する
ことで、掘削手段３や掘削土移送手段４に掘削土が付着
しにくいようにし、このことにより掘削効率を向上さ
せ、また、掘削土の地上への移動効率を向上させるよう
にしている。Excavating means 3 for excavating the ground 2
And applying an electric current to the excavator 1 when discharging the excavated soil to the ground while excavating the ground 2 by the excavator 1 provided with the excavated soil transfer means 4 for transferring the excavated excavated soil to the ground. Thus, the excavated soil is prevented from adhering to the excavated means 3 and the excavated soil transfer means 4, thereby improving the excavation efficiency and the efficiency of moving the excavated soil to the ground.
【０００９】また、掘削機１に通電しながら掘削する際
に、地盤２の掘削しようとする部分の近傍に挿入した電
極材７が正極、掘削機１の掘削手段３側が負極となるよ
うに電流を通電しながら掘削することで、負極となる掘
削手段３側には水が集まり、正極となる電極材７側には
ベントナイト成分等が集まり、この結果、より掘削土が
掘削手段３側に付着しにくくなるようにしてある。In addition, when excavating the excavator 1 while energizing it, a current is applied so that the electrode material 7 inserted near the portion of the ground 2 to be excavated becomes a positive electrode and the excavation means 3 side of the excavator 1 becomes a negative electrode. By excavating while energizing the water, water collects on the side of the excavating means 3 that becomes the negative electrode, and bentonite components and the like collect on the side of the electrode material 7 that becomes the positive electrode. As a result, excavated soil adheres to the side of the excavating means 3 more. It is difficult to do.
【００１０】[0010]
【実施例】以下本発明を添付図面に示す実施例に基づい
て詳述する。本発明に用いる掘削機１は地盤２を掘削す
るための掘削手段３を有したものである。図１の実施例
においては、掘削軸５の下端部に掘削手段３となる掘削
ビット６を設けて掘削機１が構成してあり、図１の実施
例では更に掘削土移送手段４を構成する螺旋状部１０が
掘削軸５のほぼ全長にわたって設けてある。掘削軸５は
先端に掘削中にベントナイト、水、セメントミルク、薬
液等を吐出するための吐出口１４が設けてある。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The excavator 1 used in the present invention has excavation means 3 for excavating the ground 2. In the embodiment shown in FIG. 1, the excavator 1 is configured by providing the excavation bit 6 serving as the excavation means 3 at the lower end of the excavation shaft 5, and in the embodiment shown in FIG. A spiral portion 10 is provided over almost the entire length of the excavation shaft 5. The excavation shaft 5 is provided at its tip with a discharge port 14 for discharging bentonite, water, cement milk, chemical liquid, etc. during the excavation.
【００１１】上記のような構成の掘削機１により地盤２
を従来から公知の方法により掘削するのであるが、本発
明においては、掘削に当たって掘削しようとする部分の
近傍に電極材７を挿入し、掘削機１の掘削軸５と電極材
７とで正極及び負極を形成し、その間に電流を通電しな
がら掘削軸５により掘削する点に特徴がある。上記通電
は直流または交流のいずれでも実施することができ、交
流で通電する場合には掘削軸５と電極材７とで正極及び
アースを形成することになる。図１には掘削軸５側が正
極となり、電極材７側が負極となるように電流を通電す
る実施例が示してあり、図３には掘削軸５側が負極とな
り、電極材７側が正極となるように電流を通電する実施
例が示してある。The ground 2 is formed by the excavator 1 having the above structure.
However, in the present invention, the electrode material 7 is inserted in the vicinity of the portion to be excavated in the excavation, and the positive electrode and It is characterized in that the negative electrode is formed, and the excavation shaft 5 excavates while passing a current through the negative electrode. The energization can be carried out by either direct current or alternating current, and when energizing by alternating current, the excavation shaft 5 and the electrode material 7 form a positive electrode and a ground. FIG. 1 shows an embodiment in which an electric current is applied so that the excavation shaft 5 side becomes the positive electrode and the electrode material 7 side becomes the negative electrode. In FIG. 3, the excavation shaft 5 side becomes the negative electrode and the electrode material 7 side becomes the positive electrode. There is shown an embodiment in which a current is passed through.
【００１２】添付図面に示す実施例においては、直流１
２Ｖを通電し、鋼製の掘削軸５の上部に弾性を有する接
点板８を弾接して通電するようにしている。図中１１は
電源である。このように、掘削機１の掘削軸５に電流を
通電しながら掘削することで、掘削軸５の周辺のベント
ナイトや水やセメントミルク等を混合した掘削土の成分
を変化させて掘削土の掘削ビット６への付着力が低下
し、このことにより、掘削ビット６は掘削中従来にくら
べはるかに掘削土が付着しにくく、掘削ビット６は常に
掘削土が付着しない状態で抵抗なく掘削動作ができるこ
とになり、掘削能率が低下しないことになる。In the embodiment shown in the accompanying drawings, a direct current 1
2 V is energized, and a contact plate 8 having elasticity is elastically contacted with the upper part of the steel excavation shaft 5 to energize. In the figure, 11 is a power supply. In this way, by excavating the excavating shaft 5 of the excavator 1 while applying a current, the composition of the excavated soil mixed with bentonite, water, cement milk, etc. around the excavated shaft 5 is changed to excavate the excavated soil. The adhesion force to the bit 6 is reduced, and as a result, the excavation bit 6 is much less likely to attach excavated soil during excavation as compared with the conventional one, and the excavated bit 6 can perform excavation operation without resistance without the excavated soil always adhering. Therefore, the drilling efficiency will not decrease.
【００１３】また、掘削軸５に掘削土移送手段４を設け
たものにおいては、掘削手段３で掘削した掘削土を掘削
土移送手段４により移送して地上に排土するものである
が、この場合、上記のように掘削軸５に電流を通電させ
ることで、掘削土移送手段４で上方に移送した掘削土を
地上に移送して排出する際に掘削土移送手段４に掘削土
が付着せず、移送がスムーズに行えると共に地上におけ
る排出もスムーズに行えるものである。つまり、実施例
においては、掘削軸５を回転することにより掘削手段３
を構成する掘削ビット６により掘削した掘削土を掘削土
移送手段４を構成する螺旋状部１０により上方に移送
し、地上において掘削土を排出するのであるが、この螺
旋状部１０に掘削土が付着しにくいので、掘削土の移送
及び排出が効率的に行えることになる。Further, in the case where the excavated soil transfer means 4 is provided on the excavation shaft 5, the excavated soil excavated by the excavation means 3 is transferred by the excavated soil transfer means 4 and discharged to the ground. In this case, the excavated soil is attached to the excavated soil transfer means 4 when the excavated soil transferred upward by the excavated soil transfer means 4 is transferred to the ground and discharged by applying a current to the excavated shaft 5 as described above. Instead, it can be transferred smoothly and discharged on the ground smoothly. That is, in the embodiment, the excavation means 3 is rotated by rotating the excavation shaft 5.
The excavated soil excavated by the excavating bit 6 constituting the above is transferred upward by the spiral portion 10 constituting the excavated soil transfer means 4, and the excavated soil is discharged on the ground. Since it is hard to adhere, excavated soil can be transferred and discharged efficiently.
【００１４】ところで、掘削機１の掘削軸５に電流を通
電することにより、掘削手段３を構成する掘削ビット６
や掘削土移送手段４を構成する螺旋状部１０への掘削土
の付着力低下のメカニズムは、水の電気分解により掘削
軸５の周辺部にガスが発生すること、通電により掘削軸
５の周辺部に水が集まること、電荷を帯びやすいベント
ナイト成分等の電荷を帯びやすい成分が通電により掘削
軸５の周辺に引き付けられる等の諸要件により掘削手段
３や掘削土移送手段４に掘削土が付着しにくくなるもの
と考えられる。By the way, by supplying a current to the excavation shaft 5 of the excavator 1, the excavation bit 6 constituting the excavation means 3 is formed.
The mechanism of the decrease in the adhesive force of the excavated soil to the spiral portion 10 which constitutes the excavated soil transfer means 4 is that gas is generated in the peripheral portion of the excavated shaft 5 due to electrolysis of water, and the periphery of the excavated shaft 5 is caused by energization. Excavation soil adheres to the excavation means 3 and the excavated soil transfer means 4 due to various requirements such as water gathering at the part and components that tend to be electrically charged, such as bentonite components, being attracted to the periphery of the excavation shaft 5 by energization. It is thought to be difficult to do.
【００１５】ここで、電流を通電するに当たり、掘削軸
５と電極材７とのいずれを正極にし、いずれを負極にし
ても掘削手段３や掘削土移送手段４への掘削土の付着力
が低下するが、図３のように掘削軸５側が負極となり、
電極材７側が正極となるように電流を通電する場合に
は、負極側である掘削軸５側に水が集まり、正極側であ
る電極材７側にベントナイト成分等が集まる傾向があ
り、このため、よりいっそう掘削軸５に設けた掘削手段
３や掘削土移送手段４への掘削土が付着しにくくなる。Here, when a current is applied, whichever of the excavation shaft 5 and the electrode material 7 is made to be a positive electrode and which is made to be a negative electrode, the adhesion force of the excavated soil to the excavated means 3 and the excavated soil transfer means 4 is lowered. However, as shown in Fig. 3, the excavation shaft 5 side becomes the negative electrode,
When the current is applied so that the electrode material 7 side becomes the positive electrode, water tends to collect on the negative electrode side of the excavation shaft 5 and bentonite components and the like tend to collect on the positive electrode side of the electrode material 7 side. Further, it becomes more difficult for the excavated soil to adhere to the excavated means 3 and the excavated soil transfer means 4 provided on the excavating shaft 5.
【００１６】図２、図４には本発明の他の実施例が示し
てある。この実施例においては、掘削機１に掘削軸５
と、掘削軸５を囲む鋼製のケーシング１３を取付けてあ
る。ここで、ケーシング１３は回転しても回転しなくて
もよい。また、ケーシング１３の上端部と掘削軸５の上
端部とは絶縁材１２により絶縁してある。そして、掘削
軸５とケーシング１３とで正極及び負極を形成し、その
間に電流を通電しながら掘削軸５により掘削しながら同
時にケーシング１３を挿入していくものである。図２に
は掘削軸５側が正極となり、電極材を構成するケーシン
グ１３側が負極となるように電流を通電する実施例が示
してあり、図４には掘削軸５側が負極となり、ケーシン
グ１３側が正極となるように電流を通電する実施例が示
してある。ケーシング１３には掘削土排出用の開口部９
が設けてあって、掘削土移送手段４により移送した掘削
土を図２の開口部９から矢印のように外部に排出するよ
うになっている。2 and 4 show another embodiment of the present invention. In this embodiment, the excavator 1 has an excavation shaft 5
A steel casing 13 surrounding the excavation shaft 5 is attached. Here, the casing 13 may or may not rotate. The upper end of the casing 13 and the upper end of the excavation shaft 5 are insulated by the insulating material 12. Then, the excavation shaft 5 and the casing 13 form a positive electrode and a negative electrode, and the casing 13 is inserted at the same time while excavating the excavation shaft 5 while passing a current therethrough. FIG. 2 shows an embodiment in which a current is supplied so that the excavation shaft 5 side becomes the positive electrode and the casing 13 side forming the electrode material becomes the negative electrode. In FIG. 4, the excavation shaft 5 side becomes the negative electrode and the casing 13 side becomes the positive electrode. An embodiment is shown in which a current is applied so that The casing 13 has an opening 9 for discharging excavated soil.
Is provided, and the excavated soil transferred by the excavated soil transfer means 4 is discharged to the outside through the opening 9 in FIG. 2 as indicated by an arrow.
【００１７】しかして、この実施例においては、掘削軸
５により掘削しながら同時にケーシング１３も地盤２中
へ挿入してケーシング１３により周辺地盤の崩落を防止
するものである。そして、この実施例では、掘削軸５と
ケーシング１３との地盤２中への挿入深さが常に対応し
ており、常に良好な関係で掘削軸５とケーシング１３の
地盤２中に進入した部分間において電流が流れて掘削手
段３、掘削土移送手段４、ケーシング１３等に掘削土が
付着しにくく、効率的に掘削手段３、ケーシング１３の
挿入作業ができると共に掘削土を掘削土移送手段４によ
り移送して地上に排出できるものである。However, in this embodiment, the casing 13 is simultaneously inserted into the ground 2 while excavating by the excavation shaft 5, and the casing 13 prevents the surrounding ground from collapsing. In this embodiment, the depths of the excavation shaft 5 and the casing 13 to be inserted into the ground 2 always correspond to each other, so that the excavation shaft 5 and the casing 13 are always in a good relationship between the portions that have entered the ground 2. At this time, an electric current flows and the excavated soil is unlikely to adhere to the excavation means 3, the excavated soil transfer means 4, the casing 13, etc., so that the excavation means 3 and the casing 13 can be efficiently inserted and the excavated soil can be transferred by the excavated soil transfer means 4. It can be transported and discharged to the ground.
【００１８】なお、上記各実施例においては、掘削軸５
に掘削土移送手段４を設けた実施例を示したが、本発明
の掘削機１においては掘削手段３のみを設けて掘削土移
送手段を設けないものであってもよいものであり、この
場合も掘削機１に電流を通電して掘削手段３の掘削土が
付着しにくいようにして掘削効率を向上させるものであ
る。In each of the above embodiments, the excavation shaft 5
Although the example in which the excavated soil transfer means 4 is provided is shown in the above, the excavator 1 of the present invention may have only the excavated means 3 and not the excavated soil transfer means. Also, an electric current is applied to the excavator 1 to prevent the excavated soil of the excavation means 3 from adhering to improve excavation efficiency.
【００１９】[0019]
【発明の効果】本発明にあっては、上述のように、掘削
機に設けた掘削手段により地盤を掘削するに当たり、掘
削機に電流を通電しながら掘削するので、掘削手段に掘
削土が付着しにくく、この結果、掘削手段による掘削効
率が低下せず、効率よく掘削することができるものであ
る。As described above, according to the present invention, when excavating the ground by the excavation means provided in the excavator, the excavator excavates while supplying a current to the excavator. As a result, the efficiency of excavation by the excavation means does not decrease, and efficient excavation is possible.
【００２０】また、地盤を掘削するための掘削手段と掘
削した掘削土を地上に移送するための掘削土移送手段と
を備えた掘削機により地盤を掘削しながら掘削土を地上
に排出する際に、掘削機に電流を通電するものにおいて
は、掘削手段に掘削土が付着しにくく、掘削手段による
掘削効率が低下せず、効率よく掘削することができると
共に、掘削した掘削土を移送して排出するにあたり、掘
削土移送手段に掘削土が付着しにくくし、この結果、掘
削土の地上への移送、排出がスムーズに行えるものであ
り、これらの結果、本発明によれば、掘削、掘削土の排
出の工事が短時間でできるものである。When discharging the excavated soil to the ground while excavating the ground by an excavator equipped with excavation means for excavating the ground and excavated soil transfer means for transferring the excavated soil to the ground In the case of applying an electric current to the excavator, the excavated soil is unlikely to adhere to the excavator, the excavation efficiency of the excavator does not decrease, and the excavator can be excavated efficiently, and the excavated excavated soil is transferred and discharged. In doing so, the excavated soil is less likely to adhere to the excavated soil transfer means, and as a result, the excavated soil can be transferred to the ground and discharged smoothly. As a result, according to the present invention, the excavated soil and the excavated soil are excavated. It is possible to carry out the construction work for discharging in a short time.
【００２１】また、掘削機に設けた掘削手段により地盤
を掘削するに当たり、地盤の掘削しようとする部分の近
傍に挿入した電極材が正極、掘削機の掘削手段側が負極
となるように電流を通電しながら掘削するものにおいて
は、負極側に水が集まり、正極側にベントナイト成分等
が集まる傾向があって、このため、よりいっそう掘削軸
に設けた掘削手段等へ掘削土が付着しにくくなるもので
ある。When excavating the ground by the excavation means provided in the excavator, a current is applied so that the electrode material inserted in the vicinity of the portion of the ground to be excavated is the positive electrode and the excavation means side of the excavator is the negative electrode. However, when excavating, water tends to collect on the negative electrode side and bentonite components, etc. on the positive electrode side, which makes it more difficult for excavated soil to adhere to the excavating means provided on the excavating shaft. Is.
【図１】本発明の一実施例の掘削状態を示す断面図であ
る。FIG. 1 is a cross-sectional view showing an excavated state of an embodiment of the present invention.
【図２】本発明の他の実施例の掘削状態を示す断面図で
ある。FIG. 2 is a sectional view showing an excavated state of another embodiment of the present invention.
【図３】本発明の更に他の実施例の掘削状態を示す断面
図である。FIG. 3 is a cross-sectional view showing a state of excavation according to still another embodiment of the present invention.
【図４】本発明の更に他の実施例の掘削状態を示す断面
図である。FIG. 4 is a sectional view showing a state of excavation according to still another embodiment of the present invention.
１ 掘削機 ２ 地盤 ３ 掘削手段 ４ 掘削土移送手段 ７ 電極材 1 excavator 2 ground 3 excavation means 4 excavated soil transfer means 7 electrode material
Claims (3)
削するに当たり、掘削機に電流を通電しながら掘削する
ことを特徴とする掘削方法。1. A method of excavating, characterized in that, when excavating the ground by excavation means provided in an excavator, the excavator is excavated while supplying a current to the excavator.
た掘削土を地上に移送するための掘削土移送手段とを備
えた掘削機により地盤を掘削しながら掘削土を地上に排
出する際に、掘削機に電流を通電することを特徴とする
掘削方法。2. When discharging excavated soil to the ground while excavating the ground by an excavator equipped with an excavating means for excavating the ground and an excavating soil transfer means for transferring the excavated soil to the ground A method of excavating, characterized in that an electric current is applied to the excavator.
削するに当たり、地盤の掘削しようとする部分の近傍に
挿入した電極材が正極、掘削機の掘削手段側が負極とな
るように電流を通電しながら掘削することを特徴とする
請求項１又は請求項２記載の掘削方法。3. When excavating the ground by the excavating means provided in the excavator, an electric current is applied so that the electrode material inserted in the vicinity of the portion of the ground to be excavated becomes the positive electrode and the excavating means side of the excavator becomes the negative electrode. The excavation method according to claim 1, wherein the excavation is performed while the excavation is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11727793A JPH06323080A (en) | 1993-03-18 | 1993-05-19 | Excavating method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5828393 | 1993-03-18 | ||
| JP5-58283 | 1993-03-18 | ||
| JP11727793A JPH06323080A (en) | 1993-03-18 | 1993-05-19 | Excavating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06323080A true JPH06323080A (en) | 1994-11-22 |
Family
ID=26399343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11727793A Pending JPH06323080A (en) | 1993-03-18 | 1993-05-19 | Excavating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06323080A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012116651A1 (en) * | 2011-03-03 | 2012-09-07 | 王萌 | Rotary cylinder type scroll pump, sediment intake device, sediment dredger and dredging method |
| KR101411642B1 (en) * | 2012-09-27 | 2014-06-25 | 삼성중공업 주식회사 | Riser-guide apparatus |
| JP2020029644A (en) * | 2018-08-20 | 2020-02-27 | 株式会社技研製作所 | Construction tool and construction device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04213630A (en) * | 1990-12-11 | 1992-08-04 | Ohbayashi Corp | Device for removing earth adhering to ground excavating machine |
| JPH05149077A (en) * | 1991-11-29 | 1993-06-15 | Ohbayashi Corp | Earth adhesion preventing device of ground boring machine |
-
1993
- 1993-05-19 JP JP11727793A patent/JPH06323080A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04213630A (en) * | 1990-12-11 | 1992-08-04 | Ohbayashi Corp | Device for removing earth adhering to ground excavating machine |
| JPH05149077A (en) * | 1991-11-29 | 1993-06-15 | Ohbayashi Corp | Earth adhesion preventing device of ground boring machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012116651A1 (en) * | 2011-03-03 | 2012-09-07 | 王萌 | Rotary cylinder type scroll pump, sediment intake device, sediment dredger and dredging method |
| KR101411642B1 (en) * | 2012-09-27 | 2014-06-25 | 삼성중공업 주식회사 | Riser-guide apparatus |
| JP2020029644A (en) * | 2018-08-20 | 2020-02-27 | 株式会社技研製作所 | Construction tool and construction device |
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