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1. 发明专利

JP2009053041A Instrumentation managing method for link-type displacement gauge 有权
标题翻译：链式位移仪的仪表管理方法
公开(公告)号：JP2009053041A
公开(公告)日：2009-03-12
申请号：JP2007220054
申请日：2007-08-27
申请人： East Japan Railway Co , Tekken Constr Co Ltd , Tokyo Keisoku:Kk , 東日本旅客鉄道株式会社 , 株式会社東京計測 , 鉄建建設株式会社
发明人： TSUYOSHI TAKESHI , KUWABARA KIYOSHI , TOTSUKA JUNYA , SAITO MASAHARU , MATSUOKA SHIGERU , NAGAO TATSUJI , TAKEDA SHIGETSUGU , OOTANAKA TATSUSHI , NAGANO YUICHI , DEGUCHI YASUHIRO
IPC分类号： G01B5/30 , G01B5/00 , G01B21/00
摘要： PROBLEM TO BE SOLVED: To provide an instrumentation managing method for a link-type displacement gauge, with which troubles or failures of one measuring instrument is sensed rapidly and accurately.
SOLUTION: A plurality of link type displacement gauges 19 are arranged so as to be connected with another at an object to be measured or its close position. The link-type displacement gauge 19 includes a tube body 21 displaceable in response to a changed state of the object to be measured; a displacement-detecting member 23 arranged in the tube body 21 so as to be movable along with the tube body 21; and a measuring means 34, capable of measuring a displacement of the displacement detecting member 23 and outputting the measurement data to an arithmetic unit 45. The instrumentation managing method is used for the link-type displacement gauge in order to measure the changed state of the object to be measured, by using the plurality of link-type displacement gauges 19. When an apparent angle output is generated by one link-type displacement gauge 19, the trouble or the failure of the one link-type displacement gauge 19 is sensed, based on whether apparent angle output is generated by the link-type displacement gauges 19 that are arranged on the both sides of the one link-type displacement gauge 19.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于链式位移计的仪表管理方法，快速且准确地感测出一个测量仪器的故障或故障。解决方案：多个连杆式位移计19布置成在被测量物体或其关闭位置处与另一个连接。连杆型位移计19包括：管主体21，其可响应待测物体的变化状态而移动; 排列检测构件23，布置在管体21中，以便与管体21一起移动; 以及测量装置34，其能够测量位移检测构件23的位移并将测量数据输出到运算单元45.仪器管理方法用于链式位移计，以便测量位移检测构件23的改变状态通过使用多个连杆式位移计19来测量对象。当通过一个连杆型位移计19产生视角输出时，感测到一个连杆式位移计19的故障或故障，基于布置在一个连杆式位移计19的两侧的连杆式位移计量器19是否产生视角输出。（C）2009年，JPO＆INPIT

2. 发明专利

JP2014238309A 掘削ビットの偏位量計測装置审中-公开
标题翻译：用于钻孔的偏差量测量装置
公开(公告)号：JP2014238309A
公开(公告)日：2014-12-18
申请号：JP2013120574
申请日：2013-06-07
申请人：東日本旅客鉄道株式会社 , East Japan Railway Co , 鉄建建設株式会社 , Tekken Constr Co Ltd
发明人： KONNO HIROSHI , SUZUKI KENICHI , TAKEDA SHIGETSUGU , KURISU MOTOAKI , NAGAO TATSUJI , IWASE TAKASHI , SUZUKI TADAO
IPC分类号： G01B11/00 , E21B47/02
摘要：【課題】掘削ビットの先端位置を正確に把握し、孔曲がりの初期段階においてその傾向を確認することにより、修正掘削に要する時間を最小限にとどめることができる、掘削ビットの偏位量計測装置を提供する。【解決手段】掘削ロッドの先端に接続されて、地盤に孔を掘削するための掘削ビットの偏位量計測装置であって、掘削停止時に掘削ロッド30の上端に据え付けられる計測装置本体1と、計測装置本体1の上部から垂下するように設けられ、掘削ロッド30内に挿入される線条体13と、線条体13の先端に連結されて掘削ロッド内を昇降し、線条体との連結部を常時掘削ロッド中心に保持するガイド部材と、計測装置本体1に設けられ、設定高さ位置における線条体13の平面座標位置を検出するセンサー20a,20b,21a,21bとを備え、センサーが検出した平面座標位置に基づき掘削ビットの偏位量を算出する。【選択図】図1
摘要翻译：要解决的问题：提供一种用于钻头的偏差量测量装置，其能够通过精确地掌握钻头的尖端位置并确认孔的初始阶段中的孔弯曲倾向来最小化校正钻孔所需的时间弯曲度。解决方案：连接到钻杆的尖端并在底土上钻孔的钻头的偏差量测量装置包括：测量装置主体1，当钻井停止时安装在钻杆30的顶部边缘上; 设置成从测量装置主体1的上部悬挂并插入到钻杆30中的条纹体13; 连接到条纹体13的尖端的引导构件，在钻杆中上升/下降，并且将始终位于钻杆的中心的部分保持连接到条状体; 以及设置在测量装置主体1中的传感器20a，20b，21a，21b，并且在设定的高度位置检测条纹体13的平面坐标位置。基于由传感器检测的平面坐标位置来计算钻头的偏移量。

3. 发明专利

JP2013185403A Erection device and erection method of reinforcement cage 有权
标题翻译：加固笼的防护装置和防护方法
公开(公告)号：JP2013185403A
公开(公告)日：2013-09-19
申请号：JP2012053162
申请日：2012-03-09
申请人： East Japan Railway Co , 東日本旅客鉄道株式会社 , Tekken Constr Co Ltd , 鉄建建設株式会社
发明人： ISHIBASHI TADAYOSHI , WADA AKIHIRO , IKEMOTO HIROFUMI , TANIGUCHI YOSHINORI , TAKIZAWA SATOSHI , OKADA TAKAYUKI , TAKEYA TSUTOMU , OMURA HIROAKI , TAKASHIMA HIROYUKI , TAKEDA SHIGETSUGU , KURISU MOTOAKI , YAMAMURA YASUO , IWAI TAKANORI
IPC分类号： E02D5/20
摘要： PROBLEM TO BE SOLVED: To provide an erection device and an erection method of a reinforcement cage, capable of effectively utilizing a limited space and efficiently performing work on a construction site with a limited height.SOLUTION: A lifting device 1 includes a pair of bases 2 and a pair each of posts 6 provided at an interval on the bases 2. The post 6 is provided with a rectangular movable frame 10 to be elevated and lowered in a vertical direction, and the movable frame 10 has a plurality of holders 13 projected to the inner side of the movable frame 10 and provided with a pin 15 that can be engaged with a reinforcement cage unit 12. A lower holding device includes an annular base disposed at a peripheral edge of a pile hole, and the base has a plurality of holders 33 projected to the inner side thereof and provided with a pin 34 that can be engaged with the reinforcement cage unit 12.
摘要翻译：要解决的问题：提供一种能够有效利用有限空间并有效地在具有有限高度的施工现场进行工作的加强笼的安装装置和架设方法。解决方案：提升装置1包括一对底座两个支柱6以一定间隔设置在基座2上。支柱6设有矩形可移动框架10，以在垂直方向上升高和降低，并且可移动框架10具有突出的多个保持件13 到可移动框架10的内侧，并且设置有可与加强保持架单元12接合的销15.下保持装置包括设置在桩孔周边的环形基座，并且基座具有多个突出在其内侧的保持件33设置有可与加强架单元12接合的销34。

4. 发明专利

JP2011106190A Liner plate connection structure and liner plate connection structural body 有权
标题翻译：衬板连接结构和衬板连接结构体
公开(公告)号：JP2011106190A
公开(公告)日：2011-06-02
申请号：JP2009263531
申请日：2009-11-19
申请人： East Japan Railway Co , Jfe Metal Products & Engineering Inc , Jfe建材株式会社 , Tekken Constr Co Ltd , 東日本旅客鉄道株式会社 , 鉄建建設株式会社
发明人： ISHIBASHI TADAYOSHI , TANIGUCHI YOSHINORI , TAKEYA TSUTOMU , IKEMOTO HIROFUMI , HOSHIKAWA TSUTOMU , TAKAGI KEIICHIRO , TAKASAKI HIDEAKI , SUZUKI HIROYUKI , OTSUKA TAKAHITO , SAITO MASAHARU , MORIMOTO TAKEO , MIDOMARU MITSUYUKI , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO , HAYASHI IKUO , TAKEDA SHIGETSUGU , KURISU MOTOAKI , TSURUMI AKITOSHI , MORIMOTO ATSUO , KIMURA SHIGEAKI
IPC分类号： E21D5/10 , E21B7/20
摘要： PROBLEM TO BE SOLVED: To provide a liner plate connection structure enabling a general liner plate, the use of which is restricted depending on the size of a foundation pile, construction work method, working environment, or the like, to be used.
SOLUTION: An inner tightening liner plate is connected through a connection device. The connection device includes a pair of flange connection parts and a support part joining the pair of flange connection parts. Flange connection holes for tightening bolts are formed in the flange connection parts. The connection device is formed by connecting and fixing a pair of connection pieces. The connection piece includes a flange connection part and a support piece vertically extending from the edge or the front surface of the flange connection part. The flange connection part is configured so that the outer peripheral edge and the inner peripheral edge are positioned parallel to each other. The support piece comprises support piece connection holes for tightening bolts. In one of the support pieces, nuts are welded to the surface of the flange connection part on the inner peripheral edge side, and the support piece connection holes communicate with the nut holes.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够使用通用衬板的衬板连接结构，其使用根据使用的基础桩的尺寸，施工工作方法，工作环境等来限制。
解决方案：内部紧固衬板通过连接装置连接。连接装置包括一对法兰连接部和连接该对法兰连接部的支撑部。法兰连接部分形成用于紧固螺栓的法兰连接孔。连接装置通过连接和固定一对连接件而形成。连接件包括凸缘连接部和从凸缘连接部的边缘或前表面垂直延伸的支撑件。凸缘连接部被构造为使得外周边缘和内周边缘彼此平行地定位。支撑件包括用于紧固螺栓的支撑件连接孔。在一个支撑件中，螺母被焊接到内周边缘侧的法兰连接部的表面，并且支撑件连接孔与螺母孔连通。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2014237947A ビット装置有权
标题翻译：位设备
公开(公告)号：JP2014237947A
公开(公告)日：2014-12-18
申请号：JP2013120575
申请日：2013-06-07
申请人：東日本旅客鉄道株式会社 , East Japan Railway Co , 鉄建建設株式会社 , Tekken Constr Co Ltd
发明人： SUZUKI HIROYUKI , IKEMOTO HIROFUMI , TAKEDA SHIGETSUGU , TAKASHIMA HIROYUKI , YAMAMOTO ATSUSHI , YAMADA NOBUHIKO
IPC分类号： E21B10/00
摘要：【課題】硬質地盤を対象として穴掘削するに際し、小さなトルクでの施工を可能とするとともに、ビットの杭穴径方向のずれを抑止し、これによって、狭隘で空頭が制限された現場でも大径の杭施工を可能とする。【解決手段】土丹層などの硬質地盤を掘削対象とし、回転する掘削ロッドの先端部に複数の翼4a〜4dが放射状に設けられ、これらの翼に多数の切削ビットが取り付けられた穴掘削のためのビット装置であって、切削ビットは、地盤を溝状に切削して溝の両側面による自由面を形成するトレンチビット10と、自由面の上部に沿って地盤を切削し、自由面を崩壊させるホールダウンビット11とを少なくとも含む1つのビットユニットとして、かつ該ユニットを構成する各々のビットが異なる翼4a〜4dに取り付けられ、多数のビットユニットを備えてなる。【選択図】図3
摘要翻译：要解决的问题：为了在以硬地作为对象挖掘孔时能够以小的扭矩施工，并且即使在具有有限高度的狭窄部位也能够使大的直径的桩施加，通过抑制位置的位堆孔直径方向。解决方案：通过在旋转挖掘杆的顶端部径向设置多个叶片4a-4d，提供用于挖掘孔的钻头装置，具有作为挖掘对象的泥岩层的硬地，这些刀片上安装了大量切削刀头。切割位设置为一位单元，其包括至少一个沟槽位10，用于通过切割凹槽形状的地面的凹槽的两个侧表面形成自由表面，以及用于通过切割来塌缩自由表面的钻孔11 沿着自由表面的上部的地面和构成单元的每个位置安装在不同的叶片4a-4d上。该位装置具有大量的位单元。

6. 发明专利

JP2013060707A Borehole water level stabilization system for cast-in-place pile 有权
标题翻译：井下水位稳定系统
公开(公告)号：JP2013060707A
公开(公告)日：2013-04-04
申请号：JP2011198035
申请日：2011-09-12
申请人： East Japan Railway Co , 東日本旅客鉄道株式会社 , Tekken Constr Co Ltd , 鉄建建設株式会社
发明人： ISHIBASHI TADAYOSHI , TANIGUCHI YOSHINORI , IKEMOTO HIROFUMI , WADA AKIHIRO , IWASE TAKASHI , SAITO MASAHARU , TAKEDA SHIGETSUGU , YAMAMURA YASUO , KURISU MOTOAKI , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO , FURUSAWA SHINJI
IPC分类号： E02D5/34
摘要： PROBLEM TO BE SOLVED: To provide a borehole water level stabilization system for a cast-in-place pile, capable of stabilizing a water level of a stabilizer inside a pile hole even on a site where a groundwater level is high or a site where a position to drill the pile hole and an installation position of a tank are separated.SOLUTION: In a borehole water level stabilization system 1 for the cast-in-place pile including supply means 4 for supplying the stabilizer to a drilling hole H, discharge means 5 for discharging slurry from the drilling hole H together with drilled sediment, water level detection means 6 for detecting the water level of the stabilizer supplied into the pile hole H, and control means 7 for controlling them, the supply means 4 includes a stabilizer tank 40 for storing the stabilizer, a feed pump 42 for sending out the stabilizer from the stabilizer tank into the pile hole, and a supply route 44 from the stabilizer tank 40 to the inside of the pile hole H. A check valve 44b is provided near a proximal end to be a feed pump side of the supply route 44, a motor valve 44a is provided near a distal end to be the side of the pile hole H, and the stabilizer is made storable inside the supply route 44 between both valves.
摘要翻译：要解决的问题：为了提供现浇桩的钻孔水位稳定系统，即使在地下水位高的地方也能稳定桩孔内的稳定器的水位，或者钻孔位置和罐的安装位置分开。解决方案：在用于现浇桩的井眼水位稳定系统1中，包括用于将稳定器供应到钻孔H的供给装置4，用于从钻孔H排出浆料的排出装置5以及钻井沉积物用于检测供给到桩孔H的稳定器的水位的水位检测单元6以及控制装置7的控制单元7，供给单元4包括用于收纳稳定器的稳定器箱40，稳定器从稳定罐进入桩孔，以及从稳定罐40到桩孔H的内部的供给路径44.止回阀44b设置在近端附近作为供给路径的供给泵侧如图44所示，在作为桩孔H侧的前端附近设置有马达阀44a，并且稳定器能够在两个阀之间的供给路径44的内部存储。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2013053482A Turn table-driven type excavator 有权
标题翻译：转台式挖掘机
公开(公告)号：JP2013053482A
公开(公告)日：2013-03-21
申请号：JP2011193391
申请日：2011-09-05
申请人： East Japan Railway Co , 東日本旅客鉄道株式会社 , Tekken Constr Co Ltd , 鉄建建設株式会社 , Toa Tone Boring:Kk , 株式会社東亜利根ボーリング
发明人： ISHIBASHI TADAYOSHI , TANIGUCHI YOSHINORI , TAKEYA TSUTOMU , IKEMOTO HIROFUMI , SAITO MASAHARU , TAKEDA SHIGETSUGU , KURISU MOTOAKI , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO , OGISU KAZUYUKI , KITAHARA TOSHIHIRO , IUCHI KATSUNORI , NAKAZAWA KOSUKE
IPC分类号： E21B7/00
摘要： PROBLEM TO BE SOLVED: To relax an impulsive contract surface pressure load when starting a turn table-type rotary drive transmission device.SOLUTION: The center of rotation of a turn table 1 and the center of a kelly rod 4 agree with each other, a gap between a torque transmission surface 11 of the turn table 1 and a protrusion 41 for transmission of a rotary drive force, which is brought into contact with the torque transmission surface 11 of the turn table 1 when the turn table is rotated in the direction of an arrow, is substantially eliminated, and a gap (α) is formed between the side of an opposite surface and the torque transmission surface of the turn table 1. Since the gap is substantially eliminated, an impulsive contract surface pressure load at the rotational starting of the turn table 1 is relaxed, the protrusion 41 for the transmission of the rotary drive force of the kelly rod 4 is hardly damaged, and a use period of the kelly rod can be prolonged to increase economical efficiency.
摘要翻译：要解决的问题：当启动转台式旋转驱动传动装置时，放松冲击式压缩载荷。解决方案：转台1的旋转中心和凯利杆4的中心彼此一致，转台1的转矩传递表面11之间的间隙和用于传送旋转驱动器的突起41 基本上消除了当转台沿箭头方向旋转时与转台1的转矩传递表面11接触的力，并且在相对表面的侧面之间形成间隙（α）以及转台1的转矩传递面。由于间隙基本上消除，转台1的旋转启动时的冲击收缩面压力负担缓慢，所以用于传递凯利旋转驱动力的突起41 杆4几乎不被损坏，并且可以延长使用期限，以提高经济效率。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2013053431A Support stand of ultra low overhead clearance drilling device and recovery method of bit 有权
标题翻译：超低角度间隙钻孔装置支撑台及回收方法
公开(公告)号：JP2013053431A
公开(公告)日：2013-03-21
申请号：JP2011191310
申请日：2011-09-02
申请人： East Japan Railway Co , 東日本旅客鉄道株式会社 , Tekken Constr Co Ltd , 鉄建建設株式会社 , Toa Tone Boring:Kk , 株式会社東亜利根ボーリング
发明人： ISHIBASHI TADAYOSHI , TANIGUCHI YOSHINORI , IKEMOTO HIROFUMI , TAKEYA TSUTOMU , SAITO MASAHARU , KURISU MOTOAKI , TAKEDA SHIGETSUGU , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO , OGISU KAZUYUKI , KITAHARA TOSHIHIRO , IUCHI KATSUNORI , NAKAZAWA KOSUKE
IPC分类号： E21B7/00
摘要： PROBLEM TO BE SOLVED: To allow a small-sized drilling device to drill a hole of a diameter larger than an outside dimension of the base, and to easily recover a bit after drilling is ended on a construction site with an extremely limited overhead clearance.SOLUTION: A support stand of an ultra low overhead clearance drilling device includes: a pair of beam members 2, 2 installed roughly in parallel at an interval from each other so as to cross a drilling hole 52; a pair of connection members 3, 3 provided roughly in parallel at an interval from each other so as to connect the beam members 2, 2; and a pair of temporary receiving bars 4, 4 whose one end is freely turnably attached to one connection member 3 and other end is supported by the other connection member 3. The temporary receiving bars 4, 4 are freely movable between an approach position at which they are roughly in parallel to each other and a separated position at which they are spread open roughly in an inverted chevron shape, and are engaged with an outer periphery of a drilling rod 59 to support the bit at the approach position.
摘要翻译：要解决的问题：为了允许小型钻孔装置钻出比基座的外部尺寸大的直径的孔，并且在非常有限的施工现场结束钻井后容易地回收钻头架空清关。解决方案：超低架空间隙钻孔装置的支撑架包括：一对梁构件2,2，其彼此间隔开大致平行，以便穿过钻孔52; 一对连接构件3,3，大致平行地彼此间隔设置，以便连接梁构件2,2; 以及一对临时接收杆4,4，其一端可自由地可转动地安装在一个连接件3上，另一端由另一个连接件3支撑。临时接收杆4,4可以在接近位置它们大体上彼此平行，并且分开的位置大致以倒V形的方式展开，并且与钻杆59的外周接合以将钻头支撑在接近位置。版权所有（C）2013，JPO＆INPIT

9. 发明专利

JP2013053483A Low-height excavating machine capable of changing feed stroke 有权
标题翻译：低高度挖掘机可以更换进料斗
公开(公告)号：JP2013053483A
公开(公告)日：2013-03-21
申请号：JP2011193392
申请日：2011-09-05
申请人： East Japan Railway Co , 東日本旅客鉄道株式会社 , Tekken Constr Co Ltd , 鉄建建設株式会社 , Toa Tone Boring:Kk , 株式会社東亜利根ボーリング
发明人： ISHIBASHI TADAYOSHI , TANIGUCHI YOSHINORI , TAKEYA TSUTOMU , IKEMOTO HIROFUMI , SAITO MASAHARU , TAKEDA SHIGETSUGU , KURISU MOTOAKI , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO , OGISU KAZUYUKI , KITAHARA TOSHIHIRO , IUCHI KATSUNORI , NAKAZAWA KOSUKE
IPC分类号： E21B15/00
摘要： PROBLEM TO BE SOLVED: To provide a lifting device which increases a machine operation rate by enhancing excavation efficiency on a job site with allowance for height by enabling additional extension of a mast.SOLUTION: A low-height excavating machine includes: a skid base; a frame which is supported by the skid base and which relatively slides in its longitudinal direction; a mast 3 which is provided with a roller chain 11 erected in the frame; a lifting device which is fitted with a swivel head 5 lifted/lowered by a pin sprocket meshed with the roller chain 11; and a turn table 30 which rotates a kelly rod. In the low-height excavating machine, an extension mast provided with the roller chain 11 is detachably attached to the mast, the total height of the mast is increased, and a feed stroke can be set long to enhance excavation efficiency.
摘要翻译：要解决的问题：提供一种提升装置，其通过增加桅杆的额外延伸，通过增加作业位置上的挖掘效率来提高机器操作率。
解决方案：一种低高度挖掘机包括：防滑基座; 框架，其由滑动基座支撑并且在其纵向方向上相对滑动; 桅杆3，其设置有竖立在框架中的滚子链11; 提升装置，其安装有通过与滚子链11啮合的销链轮提升/降低的旋转头5; 以及使凯利杆旋转的转台30。在低高度挖掘机中，设置有滚子链11的延伸杆可拆卸地安装在桅杆上，桅杆的总高度增加，并且可以设定较长的进给冲程以提高挖掘效率。版权所有（C）2013，JPO＆INPIT

10. 发明专利

JP2012017595A Boring method and boring machine 有权
标题翻译：镗孔方法和镗孔机
公开(公告)号：JP2012017595A
公开(公告)日：2012-01-26
申请号：JP2010155099
申请日：2010-07-07
申请人： East Japan Railway Co , Tekken Constr Co Ltd , 東日本旅客鉄道株式会社 , 鉄建建設株式会社
发明人： NAKAGAWA YURI , TAKASAKI HIDEAKI , OTSUKA TAKAHITO , SAITO MASAHARU , TAKEDA SHIGETSUGU , KURISU MOTOAKI , TAKASHIMA HIROYUKI , MACHINAGA TOSHIHIRO
IPC分类号： E21B7/20 , E21D1/06
摘要： PROBLEM TO BE SOLVED: To enable a large-diameter hole to be efficiently bored in a construction site with a low and narrow space such as a station yard, without having to concurrently use an auxiliary construction method such as ground improvement method.SOLUTION: A protective tube 23 has an outer diameter which allows a clearance to be formed between the protective tube 23 and a hole wall of a borehole 45, and is assembled by adding a plurality of protective rings 26 in an axial direction. The protective ring 26 at a front end is always suspended and supported by a wire rope 21 delivered from a winch 20. When boring work is stopped to add a boring rod 8, the protective ring 26 is added so as to surround the boring rod 8, and the protective tube 23 is fallen into the borehole 45 by delivering the wire rope 21 from the winch 20 simultaneously with the progress of boring.
摘要翻译：要解决的问题：为了能够在具有诸如站场等低而窄的空间的施工现场中有效地钻孔，而不必同时使用诸如地面改进方法的辅助施工方法。解决方案：保护管23具有允许在保护管23和钻孔45的孔壁之间形成间隙的外径，并且通过在轴向方向上添加多个保护环26来组装。前端的保护环26总是悬挂并由从绞盘20输送的钢丝绳21支撑。当镗削加工停止以添加镗杆8时，加入保护环26以围绕镗杆8 并且保护管23通过与镗孔的进行同时从绞盘20输送钢丝绳21而落入钻孔45中。版权所有（C）2012，JPO＆INPIT

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