JP2004340216A - Joint unit of hollow rod - Google Patents

Joint unit of hollow rod Download PDF

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Publication number
JP2004340216A
JP2004340216A JP2003136267A JP2003136267A JP2004340216A JP 2004340216 A JP2004340216 A JP 2004340216A JP 2003136267 A JP2003136267 A JP 2003136267A JP 2003136267 A JP2003136267 A JP 2003136267A JP 2004340216 A JP2004340216 A JP 2004340216A
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JP
Japan
Prior art keywords
joint member
hollow rod
torque transmission
rod
joint
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
Application number
JP2003136267A
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Japanese (ja)
Inventor
Nobuo Yoshimura
信雄 吉村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATEC YOSHIMURA KK
SEPURAN KK
Original Assignee
ATEC YOSHIMURA KK
SEPURAN KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ATEC YOSHIMURA KK, SEPURAN KK filed Critical ATEC YOSHIMURA KK
Priority to JP2003136267A priority Critical patent/JP2004340216A/en
Publication of JP2004340216A publication Critical patent/JP2004340216A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint unit capable of easily facilitating separation of hollow rods even though torque is given onto a torque transmitting rod spliced by a screwed combination of a plurality of hollow rods. <P>SOLUTION: The torque transmitting rod with a desired length is provided with screwed engagement and fitting engagement of a first joint member 2 arranged on the lower end of a newly arranged hollow rod 1b onto a second joint member 3 arranged on the upper end of an existed hollow rod 1a. Torque onto the torque transmitting rod is transmitted with the aforementioned fitting engagement between the hollow rods 1a and 1b, and it is not acted on the aforementioned screwed engagement. Thus, the screwed engagement is not firmly tightened by transmission of the torque, and separation of the hollow rods 1a and 1b is simplified accordingly. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、単位長さの中空ロッドを継足して所望長さの高トルク伝達ロッドを得るための継手装置に関するものである。
【０００２】
【従来の技術】
複数本の中空ロッドを切離し可能に継足して構成した高トルク伝達ロッドとして、地盤を掘削するボーリング機械のボーリングロッドがある。ボーリングロッドの継手装置としては、図７の如く、既設の中空ロッド２１の上端面に穿設した雌ネジ部２２と、新設の中空ロッド２３の下端部に突設した雄ネジ部２４とを螺合結合させるネジ継手がある（例えば特許文献１参照）。
【０００３】
【特許文献１】
特開平１０−００８８７１号
【０００４】
【発明が解決しようとする課題】
ボーリング機械による掘削工事においては、ボーリングロッドの先端部に装着した図示外のコアチューブによる掘削作業と、前記コアチューブの掘削刃の交換時などに行なわれるボーリングロッドの昇降作業とが主な作業になる。従って、ボーリングロッドの昇降作業に費やす時間を減らして、掘削作業に費やす時間の割合を増やすと、掘削工事の能率を高めることができる。ボーリングロッドの昇降作業は、中空ロッドを順次継足し又は順次切離しつつ昇降させる作業であるから、中空ロッドの継手装置の結合分離が容易であれば、作業時間を短縮できる。
【０００５】
従来のネジ継手では、雌ネジ部２２及び雄ネジ部２４の螺合結合によって中空ロッド２１，２３を継足すことができ、パイプレンチ等の工具を用いて手動で継足し作業を行なっている。しかし、地盤を掘削するためにボーリングロッドにトルクを負荷すると雌ネジ部２２及び雄ネジ部２４が固く締まるから、前記パイプレンチ等を用いて中間ロッド２１，２３を切離すことが困難になる。従来は、雌ネジ部２２及び雄ネジ部２４が固く締まった中空ロッド２１，２３を切離すために、油圧式のチェンブロックやトルクレンチを使用しているが、前記チェンブロック等を中空ロッド２１，２３に取付けるのに時間がかかり、中空ロッド２１，２３の切離し作業に多くの時間を費やしているのが現状である。
【０００６】
本発明はかかる課題に鑑み創案するに至ったものであって、その目的は、複数本の中空ロッドを継足して構成したトルク伝達ロッドにトルクを負荷しても中空ロッドを容易に切離すことができる継手装置を提供することにある。
【０００７】
【課題を解決するための手段】
本発明に係る継手装置は、単位長さの中空ロッドを継足して所望長さのトルク伝達ロッドを得るための継手装置であって、単位長さの中空ロッドの両端に接続機能とトルク伝達機能を備えた第１と第２の継手部材を設け、既設の中空ロッドの第２の継手部材に、新設の中空ロッドの第１の継手部材を螺合結合並びに嵌合結合させることによって、所望長さのトルク伝達ロッドを得るようになしたことを特徴としている。本発明の上記構成によれば、第１の継手部材と第２の継手部材が、螺合結合による中空ロッドの接続機能と、嵌合結合による中空ロッド間でのトルク伝達機能とを有し、トルク伝達ロッドに負荷したトルクが第１の継手部材及び第２の継手部材の嵌合結合によって伝達されるから、第１の継手部材と第２の継手部材を接続する螺合結合にトルクが作用することはない。これによりトルク伝達ロッドの回転によって第１の継手部材と第２の継手部材の螺合結合が固く締まらないから、第１の継手部材と第２の継手部材の切離し作業を容易に行なうことができる。
【０００８】
前記第１の継手部材の具体例としては、前記中空ロッドの一端に基部を嵌合一体化すると共に先端部を小径でかつ断面非円形状に形成したトルク伝達軸部と、前記トルク伝達軸部の基部に正逆回転可能でかつ抜け脱不能の状態に装着すると共に前記トルク伝達軸部の先端部を囲む筒状の雌ネジ部を有する袋ナット部とからなり、前記トルク伝達軸部を筒状の雌ネジ部より突出させたものを挙げることができる。また、前記第２の継手部材の具体例としては、前記中空ロッドの他端に嵌合一体化した前記第１の継手部材のトルク伝達軸部を嵌挿する断面非円形状のトルク伝達孔を有し、かつ、外周に前記第１の継手部材の筒状の雌ネジ部を螺合する雄ネジ部を有するものを挙げることができる。
【０００９】
第１の継手部材及び第２の継手部材を上記の如く構成すると、既設の中空ロッドに新設の中空ロッドを接続するに際し、第１の継手部材の袋ナット部及び第２の継手部材の雄ネジ部を螺合させるのに先行して、第１の継手部材のトルク伝達軸部が第２の継手部材のトルク伝達孔に嵌挿するから、新設の中空ロッド及び既設の中空ロッドが同一直線上に配置される。この状態では、第１の継手部材の雌ネジ部及び第２の継手部材の雄ネジ部間に、新設の中空ロッドが傾くことによって生じる摩擦力が作用しないから、第１の継手部材の袋ナット部を容易に回転させることができる。これにより既設の中空ロッドに新設の中空ロッドを接続することが容易になる。また、第１の継手部材及び第２の継手部材間では、トルク伝達軸部及びトルク伝達孔の嵌合結合によってトルクが伝達され、雌ネジ部及び雄ネジ部の螺合結合にトルクが作用しないので、第１の継手部材と第２の継手部材の切離し作業を容易に行なうことができる。
【００１０】
【発明の実施の形態】
以下、図面を参照しつつ本発明に係る継手装置の実施形態について説明する。なお、本実施形態では、トルク伝達ロッドとしてボーリングロッドを用いて説明する。
【００１１】
本発明に係る継手装置は、図１乃至図４の如く、単位長さの中空ロッド１の両端に設けた第１と第２の継手部材２，３からなっている。
【００１２】
第１の継手部材２は、図１乃至図３の如く、中空ロッド１の片端開口部に基部４ａを焼きばめや圧入その他の適宜な手段により嵌合一体化したトルク伝達軸部４の外周部に袋ナット部５を回転自在に装着したものである。
【００１３】
トルク伝達軸部４は、基部４ａの外形を中空ロッド１の内形に対応した形状に形成すると共に基部４ａの外周部周方向に袋ナット部５を装着する凹溝４ｂを設け、かつ、先端部４ｃを基部４ａより小径でかつ断面非円形状（例えば六角形状など）に形成すると共に袋ナット部５よりも突出させてある。
【００１４】
袋ナット部５は、トルク伝達軸部４の先端部４ｃを囲む先端側の内径に雌ネジ部５ａを形成すると共に基端部５ｂの内径を先端側より小径に形成し、トルク伝達軸部４の基部４ａに形成した凹溝４ｂに正逆回転可能でかつ抜け脱不能の状態に装着してある。
【００１５】
第２の継手部材３は、図１及び図４の如く、中空ロッド１の他端開口部に嵌合一体化した基部３ａの先端面から第１の継手部材２の筒状の雌ネジ部５ａを螺合する雄ネジ部３ｂを突設すると共に、該雄ネジ部３ｂの先端面に第１の継手部材２のトルク伝達軸部４の先端部４ｃを嵌挿させるトルク伝達孔３ｃを穿設してある。トルク伝達孔３ｃは、軸心直角断面を第１の継手部材２のトルク伝達軸部４の先端部４ｃの軸心直角断面形状に対応した非円形状（例えば六角形状など）に形成してある。
【００１６】
なお、図１乃至図４において、６ａ，６ｂは、第１と第２の継手部材２，３に形成した貫通孔である。この貫通孔６ａ，６ｂは、接続した中空ロッド１，１の内部を連通して、ボーリングロッドの先端に装着した図示外のコアチューブに掘削泥水を導入するために設けてある。
【００１７】
次に図５及び図６を参照しつつ本発明の継手装置の作用について説明する。
【００１８】
図５において、１ａは既設のボーリングロッドの最上端にある中空ロッドで、１ｂは既設の中空ロッド１ａに接続する新設の中空ロッドである。既設の中空ロッド１ａは、図５の如く、第２の継手部材３を上方へ向けて配設されており、その上方に第１の継手部材２を下方へ向けた新設の中空ロッド１ｂを配置して、第１の継手部材２のトルク伝達軸部４の先端部４ｃと第２の継手部材３のトルク伝達孔３ｃとの目違いを矯正しつつ第１の継手部材２のトルク伝達軸部４の先端部４ｃを第２の継手部材３のトルク伝達孔３ｃに係入させる。この状態から第１の継手部材２の袋ナット部５を回転させて雌ネジ部５ａを第２の継手部材３の雄ネジ部３ｂに螺合させつつ、第１の継手部材２のトルク伝達軸部４の先端部４ｃを第２の継手部材３のトルク伝達孔３ｃに嵌入させていくと、図６の如く、新設の中空ロッド１ｂが既設の中空ロッド１ａに接続される。
【００１９】
図６の状態で、中空ロッド１ｂを図示外のボーリング機械で回転駆動すると、中空ロッド１ｂに加えたトルクが、第１の継手部材２のトルク伝達軸部４の先端部４ｃと第２の継手部材３のトルク伝達孔３ｃの嵌合結合によって中空ロッド１ａに伝達される。このとき、第１の継手部材２の袋ナット部５の雌ネジ部５ａ及び第２の継手部材３の雄ネジ部３ｂの螺合結合に、中空ロッド１ａ，１ｂ間で伝達された前記ボーリング機械によるトルクが作用しないので、前記螺合結合が固く締まることはない。これにより、ボーリングロッドにトルクをかけて掘削作業を行なった後でも袋ナット部５を緩めて中空ロッド１ａ，１ｂを容易に切離すことができ、ボーリングロッドの引上げに費やす時間を短縮できる。
【００２０】
以上、本発明の一実施形態につき説明したが、本発明は前記実施形態に限定されることなく種々の変形が可能であって、例えば、第１の継手部材２のトルク伝達軸部４及び第２の継手部材３のトルク伝達孔３ｃの軸心直角断面形状は、非円形状であれば如何なる形状でも構わない。
【００２１】
また、上記実施形態では、複数本の中空ロッド１，１，…を継足してボーリングロッドを構成するための継手装置を挙げて説明したが、本発明の継手装置は、ボーリングロッド以外のトルク伝達ロッドにも適用可能である。
【００２２】
【発明の効果】
本発明は前述の如く、単位長さの中空ロッドの両端に接続機能とトルク伝達機能を備えた第１と第２の継手部材を設け、既設の中空ロッドの第２の継手部材に、新設の中空ロッドの第１の継手部材を螺合結合並びに嵌合結合させるようにしたので、トルク伝達ロッドに負荷したトルクが嵌合結合によって既設の中空ロッド及び新設の中空ロッド間で伝達されるから、既設の中空ロッド及び新設の中空ロッドを接続する螺合結合にトルクが作用することはない。これによりトルク伝達ロッドの回転によって第１の継手部材と第２の継手部材の螺合結合が固く締まらないから、第１の継手部材と第２の継手部材の切離し作業を容易に行なうことができる。
【００２３】
前記第１の継手部材のトルク伝達軸部を袋ナット部の筒状の雌ネジ部より突出させて形成すると、第１の継手部材と第２の継手部材を接続するに際し、第１の継手部材の袋ナット部の雌ネジ部及び第２の継手部材の雄ネジ部を螺合させるのに先行して、第１の継手部材のトルク伝達軸部の先端部が第２の継手部材のトルク伝達孔に嵌合するから、第１の継手部材及び第２の継手部材の接続作業を容易に行なうことができる。
【図面の簡単な説明】
【図１】本発明に係る継手装置を示す縦断面図である。
【図２】図１のＡ−Ａ線断面図である。
【図３】図１のＢ−Ｂ線断面図である。
【図４】図１のＣ−Ｃ線断面図である。
【図５】継手装置による中空ロッドの接続作業を示す縦断面図である。
【図６】継手装置によって中空ロッドを接続した状態を示す縦断面図である。
【図７】従来の継手を示す縦断面図である。
【符号の説明】
１ 中空ロッド
１ａ 既設の中空ロッド
１ｂ 新設の中空ロッド
２ 第１の継手部材
３ 第２の継手部材
３ｂ 雄ネジ部
３ｃ トルク伝達孔
４ トルク伝達軸部
５ 袋ナット部
５ａ 雌ネジ部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coupling device for obtaining a high-torque transmission rod having a desired length by adding a hollow rod having a unit length.
[0002]
[Prior art]
A boring rod of a boring machine that excavates the ground is a high-torque transmitting rod configured by detachably extending a plurality of hollow rods. As shown in FIG. 7, as a coupling device for a boring rod, a female screw portion 22 drilled on the upper end surface of an existing hollow rod 21 and a male screw portion 24 protruding from the lower end of a new hollow rod 23 are screwed. There is a screw joint to be combined (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-008871
[Problems to be solved by the invention]
In excavation work using a boring machine, excavation work using a core tube (not shown) attached to the tip of a boring rod, and lifting and lowering work of a boring rod performed when exchanging the excavation blade of the core tube are mainly performed. Become. Therefore, if the time spent for lifting and lowering the boring rod is reduced and the percentage of time spent for excavation is increased, the efficiency of excavation work can be increased. Since the operation of lifting and lowering the boring rod is an operation of sequentially raising or lowering the hollow rod while sequentially separating the hollow rod, the operation time can be reduced if the hollow rod joint device can be easily coupled and separated.
[0005]
In the conventional threaded joint, the hollow rods 21 and 23 can be extended by screw connection of the female thread portion 22 and the male thread portion 24, and the extension operation is manually performed using a tool such as a pipe wrench. However, when a torque is applied to the boring rod to excavate the ground, the female screw portion 22 and the male screw portion 24 are firmly tightened, so that it becomes difficult to separate the intermediate rods 21 and 23 using the pipe wrench or the like. Conventionally, a hydraulic chain block or a torque wrench is used to separate the hollow rods 21 and 23 in which the female screw portion 22 and the male screw portion 24 are tightly tightened. , 23, it takes a long time to detach the hollow rods 21 and 23.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to easily disconnect a hollow rod even when a torque is applied to a torque transmission rod formed by adding a plurality of hollow rods. It is an object of the present invention to provide a joint device capable of performing the above-described steps.
[0007]
[Means for Solving the Problems]
The joint device according to the present invention is a joint device for adding a hollow rod having a unit length to obtain a torque transmitting rod having a desired length, and has a connecting function and a torque transmitting function at both ends of the hollow rod having a unit length. And a second joint member of the existing hollow rod, and a first joint member of the newly installed hollow rod is screwed and fitted to the second joint member of the existing hollow rod, thereby obtaining a desired length. The characteristic feature is that a torque transmission rod of a desired length is obtained. According to the above configuration of the present invention, the first joint member and the second joint member have a function of connecting the hollow rods by screwing and a function of transmitting torque between the hollow rods by fitting. Since the torque applied to the torque transmission rod is transmitted by the fitting connection between the first joint member and the second joint member, the torque acts on the screw connection that connects the first joint member and the second joint member. I will not. Thus, since the screw connection between the first joint member and the second joint member is not tightly tightened by the rotation of the torque transmission rod, the work of separating the first joint member and the second joint member can be easily performed. .
[0008]
As a specific example of the first joint member, a torque transmission shaft portion in which a base is fitted and integrated with one end of the hollow rod and a distal end portion is formed to have a small diameter and a non-circular cross section, And a cap nut portion having a cylindrical female thread surrounding the tip of the torque transmission shaft portion. One that protrudes from a female screw part having a shape of a circle can be used. Further, as a specific example of the second joint member, a torque transmission hole having a non-circular cross section for inserting a torque transmission shaft portion of the first joint member fitted and integrated with the other end of the hollow rod is provided. And a male screw part on the outer periphery for screwing the cylindrical female screw part of the first joint member.
[0009]
When the first joint member and the second joint member are configured as described above, when connecting the newly installed hollow rod to the existing hollow rod, the cap nut portion of the first joint member and the male screw of the second joint member are used. Prior to screwing the portions, the torque transmission shaft portion of the first joint member is inserted into the torque transmission hole of the second joint member, so that the new hollow rod and the existing hollow rod are aligned on the same straight line. Placed in In this state, no frictional force is generated between the female screw portion of the first joint member and the male screw portion of the second joint member due to the inclination of the newly installed hollow rod. The part can be easily rotated. This makes it easy to connect the new hollow rod to the existing hollow rod. Further, between the first joint member and the second joint member, torque is transmitted by the fitting connection between the torque transmitting shaft portion and the torque transmitting hole, and no torque acts on the screw coupling between the female screw portion and the male screw portion. Therefore, the work of separating the first joint member and the second joint member can be easily performed.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a joint device according to the present invention will be described with reference to the drawings. In this embodiment, a description will be given using a boring rod as the torque transmission rod.
[0011]
As shown in FIGS. 1 to 4, the joint device according to the present invention includes first and second joint members 2 and 3 provided at both ends of a hollow rod 1 having a unit length.
[0012]
As shown in FIGS. 1 to 3, the first joint member 2 has an outer periphery of a torque transmission shaft portion 4 in which a base 4a is fitted and integrated into one end opening of the hollow rod 1 by shrink fitting, press fitting or other appropriate means. The cap nut portion 5 is rotatably mounted on the portion.
[0013]
The torque transmission shaft portion 4 has an outer shape of the base portion 4a formed in a shape corresponding to the inner shape of the hollow rod 1, and has a concave groove 4b for mounting a cap nut portion 5 in a circumferential direction of an outer peripheral portion of the base portion 4a. The portion 4c has a smaller diameter than the base 4a and a non-circular cross section (for example, a hexagonal shape) and is projected from the cap nut portion 5.
[0014]
The cap nut portion 5 has a female screw portion 5a formed on the inner diameter of the distal end side surrounding the distal end portion 4c of the torque transmission shaft portion 4 and the inner diameter of the proximal end portion 5b formed smaller than the distal end side. Is mounted in a concave groove 4b formed in the base 4a so as to be rotatable forward and backward and not to come out.
[0015]
As shown in FIG. 1 and FIG. 4, the second joint member 3 is connected to the cylindrical female screw portion 5 a of the first joint member 2 from the distal end surface of the base 3 a fitted and integrated with the other end opening of the hollow rod 1. And a torque transmitting hole 3c for inserting the distal end 4c of the torque transmitting shaft 4 of the first joint member 2 into the distal end surface of the male threaded portion 3b. I have. The torque transmission hole 3c is formed in a non-circular shape (for example, a hexagonal shape) corresponding to the cross-section perpendicular to the axis at the axis perpendicular to the axis of the tip end portion 4c of the torque transmission shaft portion 4 of the first joint member 2. .
[0016]
1 to 4, 6a and 6b are through holes formed in the first and second joint members 2 and 3, respectively. The through holes 6a and 6b are provided for communicating the inside of the connected hollow rods 1 and 1 to introduce drilling mud into a core tube (not shown) attached to the tip of the boring rod.
[0017]
Next, the operation of the joint device of the present invention will be described with reference to FIGS.
[0018]
In FIG. 5, reference numeral 1a denotes a hollow rod at the uppermost end of the existing boring rod, and 1b denotes a new hollow rod connected to the existing hollow rod 1a. As shown in FIG. 5, the existing hollow rod 1a is arranged with the second joint member 3 facing upward, and a new hollow rod 1b with the first joint member 2 facing downward is arranged above it. Then, while correcting the misalignment between the distal end portion 4c of the torque transmission shaft portion 4 of the first joint member 2 and the torque transmission hole 3c of the second joint member 3, the torque transmission shaft portion of the first joint member 2 is corrected. 4 is engaged with the torque transmission hole 3 c of the second joint member 3. From this state, the torque transmission shaft of the first joint member 2 is rotated while the cap nut portion 5 of the first joint member 2 is rotated to screw the female screw portion 5a into the male screw portion 3b of the second joint member 3. When the distal end portion 4c of the portion 4 is fitted into the torque transmission hole 3c of the second joint member 3, the new hollow rod 1b is connected to the existing hollow rod 1a as shown in FIG.
[0019]
When the hollow rod 1b is rotationally driven by a boring machine (not shown) in the state of FIG. 6, the torque applied to the hollow rod 1b is applied to the distal end 4c of the torque transmission shaft 4 of the first joint member 2 and the second joint. The torque is transmitted to the hollow rod 1a by the fitting connection of the torque transmission hole 3c of the member 3. At this time, the boring machine transmitted between the hollow rods 1a and 1b is screwed into the female joint 5a of the cap nut portion 5 of the first joint member 2 and the male thread 3b of the second joint member 3. As a result, the screw connection is not tightly tightened. Thereby, even after the boring rod is subjected to the excavation work by applying a torque, the cap nut portion 5 can be loosened to easily separate the hollow rods 1a and 1b, and the time spent for pulling up the boring rod can be reduced.
[0020]
As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the torque transmission shaft portion 4 and the first The cross-sectional shape of the torque transmission hole 3c of the second joint member 3 at right angles to the axis may be any shape as long as it is non-circular.
[0021]
Further, in the above-described embodiment, the joint device for forming the boring rod by adding the plurality of hollow rods 1, 1, ... has been described. However, the joint device of the present invention provides a torque transmission other than the boring rod. Also applicable to rods.
[0022]
【The invention's effect】
As described above, the present invention provides first and second joint members having a connecting function and a torque transmitting function at both ends of a hollow rod having a unit length, and a second joint member of an existing hollow rod is provided with a new joint member. Since the first joint member of the hollow rod is screw-connected and fitted together, the torque applied to the torque transmission rod is transmitted between the existing hollow rod and the newly installed hollow rod by the fitted connection. There is no torque acting on the threaded connection connecting the existing hollow rod and the new hollow rod. Thus, since the screw connection between the first joint member and the second joint member is not tightly tightened by the rotation of the torque transmission rod, the work of separating the first joint member and the second joint member can be easily performed. .
[0023]
When the torque transmitting shaft portion of the first joint member is formed to protrude from the cylindrical female screw portion of the cap nut portion, the first joint member is connected to the first joint member when connecting the first joint member and the second joint member. Prior to screwing the female screw portion of the cap nut portion and the male screw portion of the second joint member, the distal end of the torque transmitting shaft portion of the first joint member transmits the torque of the second joint member. Since the first fitting member and the second fitting member are fitted into the holes, the connecting operation of the first and second joint members can be easily performed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a joint device according to the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is a sectional view taken along line CC of FIG. 1;
FIG. 5 is a longitudinal sectional view showing a connection operation of the hollow rod by the joint device.
FIG. 6 is a longitudinal sectional view showing a state where a hollow rod is connected by a joint device.
FIG. 7 is a longitudinal sectional view showing a conventional joint.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hollow rod 1a Existing hollow rod 1b New hollow rod 2 First joint member 3 Second joint member 3b Male screw part 3c Torque transmission hole 4 Torque transmission shaft part 5 Cap nut part 5a Female screw part

Claims (3)

単位長さの中空ロッドを継足して所望長さのトルク伝達ロッドを得るための継手装置であって、単位長さの中空ロッドの両端に接続機能とトルク伝達機能を備えた第１と第２の継手部材を設け、既設の中空ロッドの第２の継手部材に、新設の中空ロッドの第１の継手部材を螺合結合並びに嵌合結合させることによって、所望長さのトルク伝達ロッドを得るようになしたことを特徴とする中空ロッドの継手装置。A coupling device for obtaining a torque transmission rod having a desired length by adding a hollow rod having a unit length, comprising first and second connection functions and a torque transmission function provided at both ends of the hollow rod having a unit length. By connecting the first joint member of the newly installed hollow rod to the second joint member of the existing hollow rod with a second joint member of the existing hollow rod, a torque transmission rod having a desired length can be obtained. A hollow rod coupling device, characterized in that: 前記第１の継手部材は、前記中空ロッドの一端に基部を嵌合一体化すると共に先端部を小径でかつ断面非円形状に形成したトルク伝達軸部と、前記トルク伝達軸部の基部に正逆回転可能でかつ抜け脱不能の状態に装着すると共に前記トルク伝達軸部の先端部を囲む筒状の雌ネジ部を有する袋ナット部とからなり、前記トルク伝達軸部を筒状の雌ネジ部より突出させたことを特徴とする請求項１に記載の中空ロッドの継手装置。The first joint member has a base portion fitted and integrated with one end of the hollow rod, a tip end portion having a small diameter and a non-circular cross section, and a positive end formed on the base portion of the torque transmission shaft portion. A cap nut portion having a cylindrical female screw portion that is mounted in a reversely rotatable and non-removable state and surrounds a tip portion of the torque transmission shaft portion, wherein the torque transmission shaft portion is a cylindrical female screw. The joint device for a hollow rod according to claim 1, wherein the joint device protrudes from the portion. 前記第２の継手部材は、前記中空ロッドの他端に嵌合一体化した前記第１の継手部材のトルク伝達軸部を嵌挿する断面非円形状のトルク伝達孔を有し、かつ、外周に前記第１の継手部材の筒状の雌ネジ部を螺合する雄ネジ部を有することを特徴とする請求項１又は２に記載の中空ロッドの継手装置。The second joint member has a torque transmission hole having a non-circular cross section for inserting a torque transmission shaft portion of the first joint member fitted and integrated with the other end of the hollow rod, and has an outer periphery. The hollow rod joint device according to claim 1 or 2, further comprising a male screw portion to which a cylindrical female screw portion of the first joint member is screwed.
JP2003136267A 2003-05-14 2003-05-14 Joint unit of hollow rod Pending JP2004340216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP2003136267A JP2004340216A (en) 2003-05-14 2003-05-14 Joint unit of hollow rod

Publications (1)

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011252349A (en) * 2010-06-03 2011-12-15 Ohbayashi Corp Boring stirring machine and landslide protection construction method
CN102889307A (en) * 2012-10-19 2013-01-23 无锡市百顺机械厂 Coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011252349A (en) * 2010-06-03 2011-12-15 Ohbayashi Corp Boring stirring machine and landslide protection construction method
CN102889307A (en) * 2012-10-19 2013-01-23 无锡市百顺机械厂 Coupling

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