JP6453372B2

JP6453372B2 - Screw joint tightening device

Info

Publication number: JP6453372B2
Application number: JP2017036320A
Authority: JP
Inventors: 中村　多喜夫; 多喜夫中村; 清水　達雄; 達雄清水; 昭博後藤; 慧太郎和田
Original assignee: OM MFG CO., LTD.
Current assignee: OM MFG CO., LTD.
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2019-01-16
Anticipated expiration: 2037-02-28
Also published as: JP2018140467A

Description

本発明は、土木建築分野において支柱や杭として使用される大径金属管の螺着継合に用いられるネジ継手を設定トルクで締め上げるネジ継手締め上げ装置に関するものである。 The present invention relates to a screw joint tightening device for tightening a screw joint used for screwing and joining a large-diameter metal pipe used as a support or a pile in the civil engineering field with a set torque.

従来、土木建築分野における鋼管柱同士や鋼管杭同士の接合作業は溶接によって行われることが一般的であったが、現場での溶接を用いた接合作業は、施工に多くの時間が費やされること、また、作業者の技術力により溶接の品質に差が生じてしまうことなどの問題があることから、近年、新たな接合技術として例えば特許文献１に示すネジ継手を用いた接合が用いられるようになってきている。 Conventionally, joining work between steel pipe columns and steel pipe piles in the field of civil engineering and construction has been generally performed by welding, but joining work using welding in the field requires a lot of time for construction. In addition, since there is a problem such as a difference in welding quality due to the technical skill of the operator, in recent years, for example, joining using a screw joint shown in Patent Document 1 is used as a new joining technique. It is becoming.

また、このようなネジ継手を用いた鋼管の接合（継合）作業においては、現場での締め上げ作業を簡易化するとともに、接合管理を高い精度で行うことを目的として、例えば特許文献２に示すような、合いマークを採用した接合作業が行われている。 Moreover, in the joining (joining) operation | work of the steel pipe using such a threaded joint, while simplifying the on-site tightening operation | work and for the purpose of performing joining management with high precision, for example in patent document 2 The joining work which employ | adopted the alignment mark as shown is performed.

この合いマークを採用した接合作業とは、具体的には、事前に（鋼管の接合を実施する前に、具体的には、ネジ継手を鋼管に取り付ける前に）適正なトルクで雄ネジ継手と雌ネジ継手とを締め上げ、この適正トルク出締め上げた状態の雄ネジ継手と雌ネジ継手の外周面に、雄ネジ継手と雌ネジ継手の相対的回転方向の位置を認識するための印（合いマーク）を記し、現場で接合作業を行う際は、この合いマークを目印にして締め付け作業を行うことで、締め上げ作業時にトルク測定をしなくても、適正なトルクでネジ継手を締め上げることができるものである。 Specifically, the joining operation using this alignment mark is a prior art (before the steel pipe is joined, specifically, before the threaded joint is attached to the steel pipe) and the male threaded joint with an appropriate torque. A mark for recognizing the position of the male screw joint and the female screw joint in the relative rotational direction on the outer surface of the male screw joint and the female screw joint with the appropriate torque tightened and tightened ( When the joint work is performed on site, the screw joint is tightened with the proper torque, even if the torque is not measured during the tightening work. It is something that can be done.

特開２０１５−１５５６２２号公報JP2015-155622A 特開２０１６−１２５５２０号公報Japanese Patent Laid-Open No. 2006-125520

本発明は、このようなネジ継手に合いマークを記す作業を行う際、容易に且つ高い精度でネジ継手を適正トルクで締め上げた状態にすることができるネジ継手締め上げ装置を提供することを目的とする。 It is an object of the present invention to provide a screw joint tightening device that can easily and highly accurately tighten a screw joint with an appropriate torque when performing an operation for marking a mark on such a screw joint. Objective.

添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be described with reference to the accompanying drawings.

土木建築分野において支柱や杭として使用される大径金属管の螺着継合に用いられるネジ継手の一方の雄ネジ継手１と他方の雌ネジ継手２のいずれか一方の継手が固定される第一継手固定部３と、他方の継手が固定される第二継手固定部４と、前記第一継手固定部３に固定された前記雄ネジ継手１と前記雌ネジ継手２の一方のネジ継手に対して前記第二継手固定部４に固定された他方のネジ継手を相対回動させるシリンダー装置５とからなり、前記第一継手固定部３と前記第二継手固定部４に固定され仮締め状態とされた前記雄ネジ継手１と前記雌ネジ継手２を、前記シリンダー装置５の作動により前記第二継手固定部４に装着された前記雄ネジ継手１と前記雌ネジ継手２のいずれか一方のネジ継手を他方のネジ継手に対して相対回動させて設定トルクで締め上げるネジ継手締め上げ装置であって、前記第二継手固定部４は、前記仮締め状態時に前記シリンダー装置５が接続されるシリンダー接続部６が設けられているとともに、このシリンダー接続部６を所定のシリンダー接続位置に位置調整する位置調整機構を有する構成とされていることを特徴とするネジ継手締め上げ装置に係るものである。 In the civil engineering field, one of the male threaded joint 1 and the other female threaded joint 2 of the threaded joint used for screwing and joining a large-diameter metal pipe used as a pillar or pile is fixed. One screw joint of one joint fixing part 3, a second joint fixing part 4 to which the other joint is fixed, and the male screw joint 1 and the female screw joint 2 fixed to the first joint fixing part 3. On the other hand, it comprises a cylinder device 5 for relatively rotating the other screw joint fixed to the second joint fixing portion 4, and is fixed to the first joint fixing portion 3 and the second joint fixing portion 4 and temporarily tightened. The male threaded joint 1 and the female threaded joint 2 are connected to either the male threaded joint 1 or the female threaded joint 2 attached to the second joint fixing part 4 by the operation of the cylinder device 5. Rotate the screw joint relative to the other screw joint A screw joint tightening device for tightening at a constant torque, wherein the second joint fixing portion 4 is provided with a cylinder connection portion 6 to which the cylinder device 5 is connected in the temporarily tightened state, and this cylinder connection The present invention relates to a screw joint tightening device characterized by having a position adjusting mechanism for adjusting the position of the portion 6 to a predetermined cylinder connection position.

また、前記位置調整機構は、前記雄ネジ継手１又は前記雌ネジ継手２を固定するための継手固定装置７を有する継手固定基板部８と、前記シリンダー接続部６を有し前記継手固定基板部８に回動自在に設けられる回動基板部９と、前記継手固定基板部８に対する前記回動基板部９の相対回動を不能にする回動動作抑止手段とからなり、前記継手固定基板部８に対して前記回動基板部９を相対回動させることで前記継手固定基板部８に固定された前記雄ネジ継手１又は前記雌ネジ継手２を螺動させることなく前記シリンダー接続部６を前記シリンダー接続位置に移動調整することができ、前記回動動作抑止手段により前記回動基板部９を前記継手固定基板部８に対して回動動作不能にすることで前記シリンダー接続部６を前記シリンダー接続位置に位置決めするように構成されていることを特徴とする請求項１記載のネジ継手締め上げ装置に係るものである。 The position adjusting mechanism includes a joint fixing board portion 8 having a joint fixing device 7 for fixing the male screw joint 1 or the female screw joint 2, and the cylinder connecting portion 6. A pivot board portion 9 that is pivotally provided on the joint fixing board portion 8 and a pivot operation inhibiting means that disables relative rotation of the pivot board portion 9 with respect to the joint fixing substrate portion 8. The cylinder connecting portion 6 can be moved without screwing the male screw joint 1 or the female screw joint 2 fixed to the joint fixing substrate portion 8 by relatively rotating the rotary substrate portion 9 with respect to 8. The cylinder connecting position can be adjusted to the cylinder connecting position, and the rotating connection restraining means disables the rotating substrate portion 9 with respect to the joint fixing substrate portion 8 so that the cylinder connecting portion 6 can be moved. Cylinder connection position It relates to a screw joint cinching system according to claim 1, wherein being configured to position the.

また、前記継手固定基板部８は、周方向に沿って所定間隔で配置された複数の第一位置決め調整孔10を有する構成とされ、前記回動基板部９は、周方向に沿って前記第一位置決め調整孔10と異なる所定間隔で配置された複数の第二位置決め調整孔11を有する構成とされ、前記第一位置決め調整孔10及び前記第二位置決め調整孔11は、前記雄ネジ継手１と前記雌ネジ継手２とが仮締めされた状態で前記シリンダー接続部６が前記シリンダー接続位置に配置されると、該第一位置決め調整孔10のいずれかの孔と該第二位置決め調整孔11のいずれかの孔とが連通状態となるように構成されており、前記位置調整機構は、前記シリンダー接続部６が前記シリンダー接続位置に配置するように前記継手固定基板部８に対して前記回動基板部９を相対回動させ、連通状態の第一位置決め調整孔10と第二位置決め調整孔11とに前記回動動作抑制手段としての挿入係止部材12を挿通配設することで、前記回動基板部９を前記継手固定基板部８に対して回動動作不能な状態にして、前記シリンダー接続部６を前記シリンダー接続位置に位置決めする構成とされていることを特徴とする請求項２記載のネジ継手締め上げ装置に係るものである。 Further, the joint fixing substrate portion 8 is configured to have a plurality of first positioning adjustment holes 10 arranged at predetermined intervals along the circumferential direction, and the rotating substrate portion 9 includes the first positioning adjustment hole 10 along the circumferential direction. The first positioning adjustment hole 10 and the second positioning adjustment hole 11 are connected to the male threaded joint 1 with a plurality of second positioning adjustment holes 11 arranged at predetermined intervals different from the one positioning adjustment hole 10. When the cylinder connection portion 6 is disposed at the cylinder connection position in a state where the female thread joint 2 is temporarily tightened, any one of the first positioning adjustment holes 10 and the second positioning adjustment holes 11 The position adjusting mechanism is configured to rotate with respect to the joint fixing substrate portion 8 so that the cylinder connecting portion 6 is disposed at the cylinder connecting position. Relative rotation of the substrate unit 9 By inserting an insertion locking member 12 as the rotation operation restraining means through the first positioning adjustment hole 10 and the second positioning adjustment hole 11 in communication with each other, the rotation board portion 9 is connected to the joint fixing board. The screw joint tightening device according to claim 2, wherein the cylinder connecting portion 6 is positioned at the cylinder connecting position in a state in which the rotating operation is impossible with respect to the portion 8. It is.

また、前記第一継手固定部３及び前記シリンダー装置５は、床に設置される基台部13に設けられ、前記シリンダー装置５は、この基台部13に設けられた前記第一継手固定部３を挟んで対称的に配置され、前記第二継手固定部４は、前記基台部13と分離している構成とされ、前記基台部13に設けられた前記第一継手固定部３に前記雄ネジ継手１と前記雌ネジ継手２の一方の継手を固定し、他方の継手を前記第二継手固定部４に固定し、この第二継手固定部４に固定された前記他方の継手を前記第一継手固定部３に固定された前記一方の継手の上方から係合螺着して仮締め状態にした後、前記シリンダー接続部６を前記シリンダー接続位置に位置決めするとともに、前記シリンダー接続部６に前記シリンダー装置５を接続し、前記シリンダー装置５を作動させて前記第二継手固定部４を回動させることにより該第二継手固定部４に固定されている前記他方の継手を螺動させて前記一方の継手に螺着させてゆき、前記シリンダー装置５の作動抵抗が設定トルクに達したら、前記シリンダー装置５の作動が停止して、前記雄ネジ継手１と前記雌ネジ継手２との締め上げ操作が停止する構成とされていることを特徴とする請求項１〜３のいずれか１項に記載のネジ継手締め上げ装置に係るものである。 The first joint fixing part 3 and the cylinder device 5 are provided on a base part 13 installed on the floor, and the cylinder device 5 is provided on the base part 13 with the first joint fixing part. 3, the second joint fixing portion 4 is separated from the base portion 13, and the first joint fixing portion 3 provided on the base portion 13 is connected to the first joint fixing portion 3. One joint of the male threaded joint 1 and the female threaded joint 2 is fixed, the other joint is fixed to the second joint fixing part 4, and the other joint fixed to the second joint fixing part 4 is fixed. After engaging and screwing from above one of the joints fixed to the first joint fixing part 3 and temporarily tightening, the cylinder connecting part 6 is positioned at the cylinder connecting position, and the cylinder connecting part 6 to which the cylinder device 5 is connected. When the second joint fixing portion 4 is operated to rotate, the other joint fixed to the second joint fixing portion 4 is screwed and screwed to the one joint, and the cylinder When the operating resistance of the device 5 reaches a set torque, the operation of the cylinder device 5 is stopped, and the tightening operation of the male screw joint 1 and the female screw joint 2 is stopped. The threaded joint tightening device according to any one of claims 1 to 3.

本発明は上述のように構成したから、例えば、ネジ継手に適正トルクでの締め上げ状態を認識するための合いマークを記す作業を行う際、容易に且つ高い精度でネジ継手を適正トルクで締め上げた状態にすることができる。 Since the present invention is configured as described above, for example, when performing an operation of marking an alignment mark for recognizing a tightened state with an appropriate torque on the screw joint, the screw joint is easily and accurately tightened with the appropriate torque. Can be raised.

本実施例を示す斜視図である。It is a perspective view which shows a present Example. 本実施例（継手装着状態）を示す斜視図である。It is a perspective view which shows a present Example (joint mounting state). 本実施例（継手締め上げ操作状態）を示す斜視図である。It is a perspective view which shows a present Example (joint tightening operation state). 鋼管用ネジ継手を示す説明分解斜視図である。It is a description disassembled perspective view which shows the threaded joint for steel pipes. 本実施例の第二継手固定部を構成する継手固定基板部８（下側）と回動基板部９（上側）を示す説明平面図である。It is a description top view which shows the joint fixed board | substrate part 8 (lower side) and the rotation board | substrate part 9 (upper side) which comprise the 2nd joint fixing | fixed part of a present Example. 本実施例の第二継手固定部の第一位置決め調整孔と第二位置決め調整孔との配置関係を示す説明図である。It is explanatory drawing which shows the arrangement | positioning relationship between the 1st positioning adjustment hole and 2nd positioning adjustment hole of the 2nd joint fixing | fixed part of a present Example. 本実施例の継手回り止め構造（上側：雄ネジ継手、下側：雌ネジ継手）を示す説明概略図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory schematic diagram illustrating a joint detent structure (upper side: male threaded joint, lower side: female threaded joint) of the present example. 本実施例の使用状態（仮締め完了状態）を示す説明図である。It is explanatory drawing which shows the use condition (temporary fastening completion state) of a present Example. 本実施例の使用状態（シリンダー接続部位置調整時）を示す説明図である。It is explanatory drawing which shows the use condition (at the time of cylinder connection part position adjustment) of a present Example. 本実施例の使用状態（シリンダー接続部位置決め完了状態）を示す説明図である。It is explanatory drawing which shows the use condition (cylinder connection part positioning completion state) of a present Example. 本実施例の使用状態（締め上げ操作状態）を示す説明図である。It is explanatory drawing which shows the use condition (tightening operation state) of a present Example.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。 An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

本発明は、例えば鋼管同士を螺着継合するために鋼管に取り付けられるネジ継手を、鋼管に取り付ける前に事前に適正なトルクで締め上げて、この適正トルクで締め上げた状態を現場で容易に再現（認識）できるように合いマークをネジ継手に記す際に、ネジ継手を適正トルクで締め上げるためのネジ継手締め上げ装置である。 In the present invention, for example, a screw joint that is attached to a steel pipe in order to screw together the steel pipes is tightened with an appropriate torque in advance before being attached to the steel pipe, and the state tightened with the appropriate torque can be easily performed in the field. This is a threaded joint tightening device for tightening the threaded joint with an appropriate torque when marking the threaded joint on the threaded joint so that it can be reproduced (recognized).

本発明を用いてネジ継手を締め上げる場合、ネジ継手の一方の雄ネジ継手１と他方の雌ネジ継手２のいずれか一方の継手（ここでは雌ネジ継手２とする）を第一継手固定部３に固定し、他方の継手（ここでは雄ネジ継手１とする）を第二継手固定部４に固定し、この第二継手固定部４に固定した雄ネジ継手１を第一継手固定部３に固定した雌ネジ継手２に係合し、例えば作業者が適宜な力で第二継手固定部４を回動操作して雄ネジ継手１を雌ネジ継手２に螺着してゆき、雄ネジ継手１と雌ネジ継手２とを仮締め状態にする。 When tightening the threaded joint using the present invention, one of the threaded joint 1 and the other threaded joint 2 (here, the threaded joint 2) is used as the first joint fixing portion. 3, the other joint (here, male threaded joint 1) is secured to the second joint securing part 4, and the male threaded joint 1 secured to the second joint securing part 4 is fixed to the first joint securing part 3. For example, an operator rotates the second joint fixing portion 4 with an appropriate force to screw the male threaded joint 1 onto the female threaded joint 2, and the male threaded joint. The joint 1 and the female thread joint 2 are temporarily tightened.

このネジ継手を仮締め状態にした際に、雄ネジ継手１を固定している第二継手固定部４に設けられているシリンダー接続部６がシリンダー装置５と接続される所定のシリンダー接続位置とは異なる位置に停止している場合は、第二継手固定部４に設けられた位置調整機構によりシリンダー接続部６を所定のシリンダー接続位置に移動調整してシリンダー装置５と接続可能な状態にする。 When the threaded joint is temporarily tightened, a predetermined cylinder connection position where the cylinder connecting part 6 provided in the second joint fixing part 4 fixing the male threaded joint 1 is connected to the cylinder device 5; Are stopped at different positions, the cylinder connecting portion 6 is moved and adjusted to a predetermined cylinder connecting position by the position adjusting mechanism provided in the second joint fixing portion 4 so that it can be connected to the cylinder device 5. .

このシリンダー接続部６の位置調整後、この所定のシリンダー接続位置に位置したシリンダー接続部６を位置決め状態、言い換えると第二継手固定部４に対して固定状態にするとともにシリンダー接続部６にシリンダー装置５（具体的には、シリンダーロッド14の先端部）を接続する。 After the position of the cylinder connecting portion 6 is adjusted, the cylinder connecting portion 6 positioned at the predetermined cylinder connecting position is set in a positioning state, in other words, fixed to the second joint fixing portion 4 and the cylinder connecting portion 6 is connected to the cylinder device. 5 (specifically, the tip of the cylinder rod 14) is connected.

このシリンダー接続部６に接続したシリンダー装置５を作動させると、シリンダーロッド14が伸長動作してシリンダー接続部６を接線方向に押圧し、これにより第二継手固定部４が回動動作することで雄ネジ継手１が螺動して雌ネジ継手２に対して締め上げ操作される。 When the cylinder device 5 connected to the cylinder connecting portion 6 is operated, the cylinder rod 14 extends and presses the cylinder connecting portion 6 in the tangential direction, whereby the second joint fixing portion 4 rotates. The male threaded joint 1 is screwed and tightened with respect to the female threaded joint 2.

この締め上げ操作において、例えば、シリンダー装置５に荷重センサ（ロードセル）を設けて、シリンダー装置５の締め上げ力をこの荷重センサで検知するように構成して、この荷重センサが設定した締め上げ力（設定トルク）を検知した際にシリンダー装置５を停止させるようにすれば、設定した適正トルクで雄ネジ継手１を雌ネジ継手２に対して締め上げ操作することができる。 In this tightening operation, for example, a load sensor (load cell) is provided in the cylinder device 5 so that the tightening force of the cylinder device 5 is detected by the load sensor, and the tightening force set by the load sensor is set. If the cylinder device 5 is stopped when (set torque) is detected, the male threaded joint 1 can be tightened with respect to the female threaded joint 2 with the set appropriate torque.

本発明の具体的な実施例について図面に基づいて説明する。 Specific embodiments of the present invention will be described with reference to the drawings.

本実施例は、土木建築分野において支柱や杭として使用される大径金属管、いわゆる鋼管柱や鋼管杭の螺着継合に用いられる鋼管用ネジ継手を適正トルク（設定したトルク）で締め上げるための鋼管用ネジ継手締め上げ装置であり、例えば、鋼管用ネジ継手に適正トルクにおける締め上げ状態を認識できる合いマークを付する際などに用いるものである。 In this embodiment, a large-diameter metal pipe used as a column or pile in the civil engineering and construction field, a steel pipe threaded joint used for screwing a steel pipe column or steel pipe pile, is tightened with an appropriate torque (set torque). The steel pipe threaded joint tightening device is used, for example, when a threaded joint for steel pipes is provided with an alignment mark that can recognize the tightened state at an appropriate torque.

具体的には、本実施例の鋼管用ネジ継手締め上げ装置は、鋼管用ネジ継手の一方の雄ネジ継手１と他方の雌ネジ継手２のいずれか一方の継手が固定される第一継手固定部３と、他方の継手が固定される第二継手固定部４と、第一継手固定部３に固定された一方のネジ継手に対して第二継手固定部４に固定された他方のネジ継手を相対回動させるシリンダー装置５とで構成されており、第一継手固定部３と第二継手固定部４に固定され仮締め状態とされた雄ネジ継手１と雌ネジ継手２を、シリンダー装置５の作動により第二継手固定部４に装着された一方のネジ継手を他方のネジ継手に対して相対回動させて設定トルクで締め上げる構成とされている。尚、本実施例は、第一継手固定部３を雌ネジ継手２が固定される固定部、第二継手固定部４を雄ネジ継手１が固定される固定部として構成した場合であり、以下に、前記構成における本実施例の構成各部について詳述する。 Specifically, the threaded joint tightening device for a steel pipe according to the present embodiment is a first joint fixing in which one of the male threaded joint 1 and the other female threaded joint 2 of the steel pipe threaded joint is fixed. Part 3, second joint fixing part 4 to which the other joint is fixed, and the other threaded joint fixed to second joint fixing part 4 with respect to one screw joint fixed to first joint fixing part 3 The male screw joint 1 and the female screw joint 2 fixed to the first joint fixing portion 3 and the second joint fixing portion 4 and temporarily tightened are connected to the cylinder device 5. 5, one screw joint mounted on the second joint fixing portion 4 is rotated relative to the other screw joint and tightened with a set torque. In addition, a present Example is a case where the 1st joint fixing | fixed part 3 is comprised as a fixing | fixed part to which the internal threaded joint 2 is fixed, and the 2nd joint fixing | fixed part 4 is a fixed part to which the external threaded joint 1 is fixed, Next, each component of the present embodiment in the above configuration will be described in detail.

雌ネジ継手２を固定する第一継手固定部３は、図示するように、円盤状に形成された基板部15上に、雌ネジ継手２を載置するための継手載置部16と、この継手載置部16上に載置した雌ネジ継手２を回り止め固定する複数（本実施例では八体）の継手固定装置17とが設けられている構成とされ、床に設置される基台部13に設けられている。 As shown in the figure, the first joint fixing portion 3 for fixing the female threaded joint 2 includes a joint mounting portion 16 for mounting the female threaded joint 2 on a substrate portion 15 formed in a disk shape, A base that is provided with a plurality of (eight bodies in this embodiment) joint fixing devices 17 for preventing and fixing the female threaded joint 2 placed on the joint placement portion 16 and installed on the floor It is provided in the part 13.

また、継手固定装置17は、基板部15の中心から放射方向に延設されたレール部18と、このレール部18にスライド自在に設けられるスライダー部19とからなり、スライダー部19には、雌ネジ継手２の内壁に設けられたキー溝部20に係合係止するキー部材21が設けられていて、継手載置部16上に載置し位置決めされた雌ネジ継手２に対して、この雌ネジ継手２の内側に配置されるスライダー部19を雌ネジ継手２の内壁に接近移動させて、このスライダー部19のキー部材21を雌ネジ継手２のキー溝部20に係合係止させることにより、継手載置部16に載置した雌ネジ継手２を回り止め状態にする構成とされている。 The joint fixing device 17 includes a rail portion 18 extending in the radial direction from the center of the base plate portion 15 and a slider portion 19 provided on the rail portion 18 so as to be slidable. A key member 21 that engages and locks with a key groove 20 provided on the inner wall of the threaded joint 2 is provided, and this female threaded joint 2 is placed on the joint placing part 16 and positioned. By moving the slider portion 19 disposed inside the threaded joint 2 closer to the inner wall of the female threaded joint 2, the key member 21 of the slider part 19 is engaged and locked with the key groove 20 of the female threaded joint 2. The female screw joint 2 placed on the joint placement portion 16 is configured to be in a non-rotating state.

また、雄ネジ継手１を固定する第二継手固定部４は、第一継手固定部３が設けられた基台部13とは分離独立して設けられており、図示するように、雄ネジ継手１をこの第二継手固定部４に対して垂下状態で回り止め固定する構成とされている。 Further, the second joint fixing portion 4 for fixing the male screw joint 1 is provided separately from the base portion 13 provided with the first joint fixing portion 3, and as shown in the figure, the male screw joint 1 is configured to be fixed to the second joint fixing portion 4 while being suspended.

また、この第二継手固定部４には、鋼管用ネジ継手を設定トルク（適正トルク）で締め上げ操作するためのシリンダー装置５が接続されるシリンダー接続部６と、このシリンダー接続部６を所定の（適正な）シリンダー接続位置に配置するための位置調整機構が設けられている。 The second joint fixing portion 4 is connected to a cylinder connecting portion 6 to which a cylinder device 5 for tightening a screw joint for steel pipes with a set torque (appropriate torque) is connected. A position adjustment mechanism is provided for disposing the cylinder at the (appropriate) cylinder connection position.

具体的には、第二継手固定部４は、図示するように、継手固定基板部８と、この継手固定基板部８に回動自在に設けられる回動基板部９との二体の基板部と、継手固定基板部８に対する回動基板部９の回動動作を抑制する回動動作抑制手段とからなる構成とされている。 Specifically, the second joint fixing portion 4 is, as shown in the figure, a two-part substrate portion including a joint fixing substrate portion 8 and a rotating substrate portion 9 that is rotatably provided on the joint fixing substrate portion 8. And a rotation operation suppressing means for suppressing the rotation operation of the rotation substrate portion 9 with respect to the joint fixing substrate portion 8.

より具体的に説明すると、継手固定基板部８は、円盤状に形成されており、一側面には雄ネジ継手１を回り止め固定する複数（本実施例では八体）の継手固定装置７と、垂下状態の雄ネジ継手１の落下を抑止して固定する複数（本実施例では四体）の落下抑止固定部22とが設けられており、また、他側面には回動基板部９を回動自在に設けるための回動基板位置決め係合部23が設けられている。 More specifically, the joint fixing substrate portion 8 is formed in a disc shape, and a plurality of (eight bodies in the present embodiment) joint fixing devices 7 for fixing the male screw joint 1 on one side surface are provided. A plurality of (four bodies in this embodiment) drop restraining fixing portions 22 that restrain and drop the suspended male screw joint 1 are provided, and the rotating substrate portion 9 is provided on the other side surface. A rotation board positioning engagement portion 23 is provided for rotation.

この継手固定基板部８に設けられている継手固定装置７は、前述した第一継手固定部３に設けられている継手固定装置17と同様に構成されていて、継手固定基板部８の中心から放射方向に延設されたレール部24と、このレール部24にスライド自在に設けられるスライダー部25とからなり、スライダー部25には、雄ネジ継手１の内壁に設けられたキー溝部26に係合係止するキー部材27が設けられていて、継手固定基板部８に固定された雄ネジ継手１に対して、この雄ネジ継手１の内側に配置されるスライダー部25を雄ネジ継手１の内壁に接近移動させて、このスライダー部25のキー部材27を雄ネジ継手１のキー溝部26に係合係止させることにより、継手固定基板部８上に配置した雄ネジ継手１を回り止め状態にする構成とされている。 The joint fixing device 7 provided in the joint fixing substrate portion 8 is configured in the same manner as the joint fixing device 17 provided in the first joint fixing portion 3 described above, and from the center of the joint fixing substrate portion 8. A rail portion 24 extending in the radial direction and a slider portion 25 provided slidably on the rail portion 24 are provided. The slider portion 25 is associated with a key groove portion 26 provided on the inner wall of the male screw joint 1. A key member 27 to be engaged and locked is provided. With respect to the male screw joint 1 fixed to the joint fixing substrate portion 8, a slider portion 25 disposed inside the male screw joint 1 is connected to the male screw joint 1. By moving close to the inner wall and engaging and locking the key member 27 of the slider portion 25 with the key groove portion 26 of the male screw joint 1, the male screw joint 1 arranged on the joint fixing substrate portion 8 is prevented from rotating. It is supposed to be configured.

また、落下抑止固定部22は、スライドレール部22ａと、このスライドレール部22ａにスライド自在に設けられた係止爪部22ｂとからなり、この係止爪部22ｂを雄ネジ継手１の外面に形成されている雌ネジ継手２との係合段差部28に係止させることで、第二継手固定部４（継手固定基板部８）に対して雄ネジ継手１を垂下状態で固定する構成とされている。 The fall prevention fixing portion 22 includes a slide rail portion 22a and a locking claw portion 22b slidably provided on the slide rail portion 22a. The locking claw portion 22b is formed on the outer surface of the male screw joint 1. A structure in which the male threaded joint 1 is fixed in a suspended state to the second joint fixing part 4 (joint fixing board part 8) by being engaged with the engaging stepped part 28 with the formed female threaded joint 2. Has been.

また、本実施例の継手固定基板部８は、図示するように、周方向に沿って所定間隔で配置された複数の第一位置決め調整孔10が設けられている。 Further, as shown in the figure, the joint fixing substrate portion 8 of the present embodiment is provided with a plurality of first positioning adjustment holes 10 arranged at predetermined intervals along the circumferential direction.

この第一位置決め調整孔10は、後述する第二位置決め調整孔11とともに、シリンダー接続部６を適正なシリンダー接続位置に位置決めするためのものであり、本実施例の継手固定基板部８は、この第一位置決め調整孔10が、１０°間隔で全周に亘って設けられている構成とされている。 The first positioning adjustment hole 10 is for positioning the cylinder connecting portion 6 at an appropriate cylinder connecting position together with the second positioning adjusting hole 11 described later. The first positioning adjustment holes 10 are provided over the entire circumference at intervals of 10 °.

また、この継手固定基板部８に回動自在に設けられる回動基板部９は、円環状の帯板材からなり、周縁部にシリンダー接続部６が設けられている。 Moreover, the rotation board | substrate part 9 provided in this joint fixed board | substrate part 8 so that rotation is possible consists of a cyclic | annular strip | belt board material, and the cylinder connection part 6 is provided in the peripheral part.

シリンダー接続部６は二箇所に設けられており、具体的には、回動基板部９の中心を通る一直線上に対向状態に設けられた構成とされている。 The cylinder connecting portions 6 are provided at two locations, and specifically, are configured to be opposed to each other on a straight line passing through the center of the rotating substrate portion 9.

また、本実施例の回動基板部９は、前述した継手固定基板部８の第一位置決め調整孔10と係合してシリンダー接続部６を適正なシリンダー接続位置に位置決めする第二位置決め調整孔11が設けられている。 Further, the rotating substrate portion 9 of the present embodiment is engaged with the first positioning adjustment hole 10 of the joint fixing substrate portion 8 described above to position the cylinder connecting portion 6 at an appropriate cylinder connecting position. 11 is provided.

この第二位置決め調整孔11は、回動基板部９の周方向に沿って前述した継手固定基板部８の第一位置決め調整孔10と異なる所定間隔で配置されたており、具体的には、本実施例の回動基板部９は、この第二位置決め調整孔11が、８°間隔でシリンダー接続部６近傍に所定の範囲に亘って設けられた構成とされている。 The second positioning adjustment holes 11 are arranged at a predetermined interval different from the first positioning adjustment holes 10 of the joint fixing substrate portion 8 described above along the circumferential direction of the rotating substrate portion 9. The rotating substrate portion 9 of the present embodiment is configured such that the second positioning adjustment holes 11 are provided in the vicinity of the cylinder connecting portion 6 over a predetermined range at intervals of 8 °.

即ち、本実施例の回動基板部９は、継手固定基板部８に重ね合わせ配設してこの継手固定基板部８に対して回動自在に設けた状態とした際、回動基板部９に設けられた第二位置決め調整孔11のいずれかの孔が、継手固定基板部８に設けられた第一位置決め調整孔10のいずれかの孔と連通状態となり、この連通状態となった第一位置決め調整孔10と第二位置決め調整孔11とに回動動作抑制手段としての挿入係止部材12（具体的には、係止ピン12）を挿通配設することで、継手固定基板部８に対する回動基板部９の回動動作が抑制されて、継手固定基板部８と回動基板部９とが一体化された状態（共回り状態）となるように構成されている。 That is, when the rotating substrate portion 9 of the present embodiment is disposed on the joint fixing substrate portion 8 so as to be rotatable with respect to the joint fixing substrate portion 8, the rotating substrate portion 9 is provided. Any one of the second positioning adjustment holes 11 provided in the joint is in communication with any one of the first positioning adjustment holes 10 provided in the joint fixing substrate portion 8, and this communication state is reached. An insertion locking member 12 (specifically, a locking pin 12) serving as a rotational movement suppressing means is inserted and disposed in the positioning adjustment hole 10 and the second positioning adjustment hole 11, so that the joint fixing substrate portion 8 can be disposed. The rotation operation of the rotating substrate unit 9 is suppressed, and the joint fixing substrate unit 8 and the rotating substrate unit 9 are integrated (co-rotating state).

また、本実施例は、前述したように、第一位置決め調整孔10は１０°間隔で配置され、また、第二位置決め調整孔11は８°間隔で配置されて、配置間隔に２°の位相差が設けられているので、継手固定基板部８に対する回動基板部９の位相位置を２°単位で位置決めすることができ、これにより、シリンダー接続部６を所定のシリンダー接続位置に対して精度良く位置決めすることができる構成とされている。 In the present embodiment, as described above, the first positioning adjustment holes 10 are arranged at intervals of 10 °, and the second positioning adjustment holes 11 are arranged at intervals of 8 °, and the arrangement interval is about 2 °. Since the phase difference is provided, the phase position of the rotating substrate portion 9 with respect to the joint fixing substrate portion 8 can be positioned in units of 2 °, whereby the cylinder connecting portion 6 can be accurately adjusted with respect to a predetermined cylinder connecting position. It is set as the structure which can be positioned well.

即ち、本実施例は、第二継手固定部４そのものが位置調整機構として構成されており、継手固定基板部８に対して回動基板部９を相対回動させて、この回動基板部９に設けられたシリンダー接続部６を所定の（適正な）シリンダー接続位置に配置した状態とし、このシリンダー接続部６が所定のシリンダー接続位置に配置された状態で連通状態となっている第一位置決め調整孔10と第二位置決め調整孔11とに係止ピン12を挿通配設することで、シリンダー接続部６が所定のシリンダー接続位置に位置決めされた状態で継手固定基板部８と回動基板部９とが一体化して（共回り状態になり）、シリンダー装置５による締め上げ操作が可能な状態となる構成とされている。 That is, in this embodiment, the second joint fixing portion 4 itself is configured as a position adjusting mechanism, and the rotating substrate portion 9 is rotated relative to the joint fixing substrate portion 8 so that the rotating substrate portion 9 is rotated. The first positioning is such that the cylinder connection portion 6 provided in the state is arranged at a predetermined (appropriate) cylinder connection position, and the cylinder connection portion 6 is in a communication state with the cylinder connection portion 6 arranged at the predetermined cylinder connection position. By disposing the locking pin 12 through the adjustment hole 10 and the second positioning adjustment hole 11, the joint fixing substrate portion 8 and the rotating substrate portion with the cylinder connecting portion 6 positioned at a predetermined cylinder connecting position. 9 is integrated (becomes a co-rotating state) so that the tightening operation by the cylinder device 5 is possible.

また、鋼管用ネジ継手を締め上げ操作するシリンダー装置５は、鋼管用ネジ継手の締め上げ力（締め上げトルク）を検知する荷重センサが設けられており、この荷重センサが設定されたトルクを検知することで動作が停止して、鋼管用ネジ継手を設定した適正なトルクで締め上げ操作することができるように構成されている。 In addition, the cylinder device 5 for tightening and operating the steel pipe threaded joint is provided with a load sensor for detecting the tightening force (tightening torque) of the steel pipe threaded joint, and this load sensor detects the set torque. By doing so, the operation is stopped, and the screw joint for steel pipe can be tightened with an appropriate torque set.

また、本実施例のシリンダー装置５は、第一継手固定部３とともに基台部13に設けられており、より具体的には、基台部13の中央に配置された第一継手固定部３を挟んで前後方向（左右方向）両側に対称的に配置された構成とされ、具体的には、第一継手固定部３を挟んで対称的に配置されたシリンダー装置取付台部29に上下移動自在且つ水平方向に回動自在に設けられており、様々な大きさの鋼管用ネジ継手に接続可能な構成とされている。 Further, the cylinder device 5 of the present embodiment is provided on the base portion 13 together with the first joint fixing portion 3, and more specifically, the first joint fixing portion 3 disposed in the center of the base portion 13. Is arranged symmetrically on both sides in the front-rear direction (left-right direction). Specifically, it moves up and down to the cylinder device mounting base 29 arranged symmetrically across the first joint fixing part 3 It is provided so as to be freely rotatable in the horizontal direction, and can be connected to a threaded joint for steel pipes of various sizes.

次に、以上のように構成される本実施例を用いた鋼管用ネジ継手の締め上げ作業方法について説明する。 Next, a method for tightening a threaded joint for steel pipes using the present embodiment configured as described above will be described.

先ず、雄ネジ継手１と雌ネジ継手２をそれぞれ第二継手固定部４と第一継手固定部３に固定する。 First, the male threaded joint 1 and the female threaded joint 2 are fixed to the second joint fixing part 4 and the first joint fixing part 3, respectively.

雄ネジ継手１を第二継手固定部４に固定する際は、継手固定基板部８側を上側にして、この継手固定基板部８上に雄ネジ継手１を載置し、継手固定装置７と落下抑止固定部22で固定する。 When the male threaded joint 1 is fixed to the second joint fixing part 4, the male threaded joint 1 is placed on the joint fixing board part 8 with the joint fixing board part 8 side facing upward. Secure with fall prevention fixing part 22.

次いで、雄ネジ継手１と雌ネジ継手２を係合する。具体的には、雄ネジ継手１を固定した第二継手固定部４を、反転機等を用いて上下反転させて雄ネジ継手１を第二継手固定部４に対して垂下状態にし、クレーンなどで吊持して第一継手固定部３に固定した雌ネジ継手２の上方から雄ネジ継手１を係合する。 Next, the male screw joint 1 and the female screw joint 2 are engaged. Specifically, the second joint fixing portion 4 to which the male screw joint 1 is fixed is turned upside down by using a reversing machine or the like so that the male screw joint 1 is suspended with respect to the second joint fixing portion 4, and a crane or the like. The male threaded joint 1 is engaged from above the female threaded joint 2 that is suspended and fixed to the first joint fixing part 3.

この雄ネジ継手１と雌ネジ継手２を係合させたら、作業者の人力により雄ネジ継手１を雌ネジ継手２に螺着してゆき仮締め状態にする。 When the male threaded joint 1 and the female threaded joint 2 are engaged, the male threaded joint 1 is screwed onto the female threaded joint 2 by the operator's human power, and is temporarily tightened.

この仮締め作業完了後、第二継手固定部４の回動基板部９を継手固定基板部８に対して回動動作可能な状態（フリー状態）にし、回動基板部９に設けられているシリンダー接続部６をシリンダー装置５と接続するシリンダー接続位置に移動調整した後、回動基板部９を継手固定基板部８に対して回動不能状態にしてシリンダー接続部６を位置決めする。 After the completion of the temporary fastening operation, the rotary substrate portion 9 of the second joint fixing portion 4 is brought into a state (free state) in which the rotary substrate portion 9 can be rotated with respect to the joint fixing substrate portion 8. After the cylinder connecting portion 6 is moved and adjusted to a cylinder connecting position where the cylinder connecting portion 6 is connected to the cylinder device 5, the rotating substrate portion 9 is made unrotatable with respect to the joint fixing substrate portion 8 and the cylinder connecting portion 6 is positioned.

具体的には、例えば、回動基板部９を継手固定基板部８に対してフリー状態にしてシリンダー接続部６をシリンダー接続位置近傍に移動させ、回動基板部９をフリー状態にしたままシリンダー接続部６にシリンダー装置５を接続し、このシリンダー接続部６とシリンダー装置５の接続完了後、第一位置決め調整孔10と第二位置決め調整孔11が連通状態となっている個所を見つけて係止ピン12を挿入配設して、回動基板部９を継手固定基板部８に対して回動不能状態にしてシリンダー接続部６を位置決めする。 Specifically, for example, the rotating substrate portion 9 is in a free state with respect to the joint fixing substrate portion 8, the cylinder connecting portion 6 is moved to the vicinity of the cylinder connecting position, and the cylinder is kept in the free state. The cylinder device 5 is connected to the connecting portion 6, and after the connection between the cylinder connecting portion 6 and the cylinder device 5 is completed, the location where the first positioning adjustment hole 10 and the second positioning adjustment hole 11 are in communication is found and engaged. The stop pin 12 is inserted and disposed, and the rotation board part 9 is made unrotatable with respect to the joint fixing board part 8, and the cylinder connecting part 6 is positioned.

また、上記以外の方法として、例えば、回動基板部９を継手固定基板部８に対してフリー状態にしてシリンダー接続部６をシリンダー接続位置近傍に移動させて、一旦、係止ピン12を連通孔に挿通配設して位置決め状態にし、この状態から係止ピン12の抜き、この係止ピン12を抜き取った回動基板部９の第二位置決め調整孔11の一つ隣の第二位置決め調整孔11に挿通し、この第二位置決め調整孔11に挿通させた係止ピン12が第一位置決め調整孔10にも挿通するように回動基板部９を移動させる。これにより回動基板部９が２°回動してシリンダー接続部６の位置が微調整される。これを繰り返し行い、シリンダー接続部６の位置をシリンダー接続位置に移動調整させても良い。 Further, as a method other than the above, for example, the rotation board part 9 is set in a free state with respect to the joint fixing board part 8, the cylinder connection part 6 is moved to the vicinity of the cylinder connection position, and the locking pin 12 is once communicated. A second positioning adjustment next to the second positioning adjustment hole 11 of the rotating board portion 9 from which the locking pin 12 is pulled out and the locking pin 12 is pulled out is inserted and disposed in the hole. The rotating substrate portion 9 is moved so that the locking pin 12 inserted through the hole 11 and inserted through the second positioning adjustment hole 11 is also inserted into the first positioning adjustment hole 10. As a result, the rotating substrate portion 9 is rotated by 2 ° and the position of the cylinder connecting portion 6 is finely adjusted. This may be repeated to move and adjust the position of the cylinder connecting portion 6 to the cylinder connecting position.

シリンダー接続部６とシリンダー装置５の接続完了後、シリンダー装置５を作動させて雄ネジ継手１を雌ネジ継手２に対して締め上げ操作する。 After the connection between the cylinder connecting portion 6 and the cylinder device 5 is completed, the cylinder device 5 is operated and the male threaded joint 1 is tightened with respect to the female threaded joint 2.

この締め上げ操作においては、雌ネジ継手２に対する雄ネジ継手１の締め上げ力が設定トルクに達すると、シリンダー装置５に設けられた荷重センサがこれを検知し、シリンダー装置５の動作が停止するので、シリンダー装置５の動作が停止したら、シリンダー装置５とシリンダー接続部６との接続を切り離し、締め上げ作業完了となる。 In this tightening operation, when the tightening force of the male threaded joint 1 with respect to the female threaded joint 2 reaches the set torque, a load sensor provided in the cylinder device 5 detects this, and the operation of the cylinder device 5 stops. Therefore, when the operation of the cylinder device 5 stops, the connection between the cylinder device 5 and the cylinder connecting portion 6 is disconnected, and the tightening operation is completed.

尚、例えば、鋼管用ネジ継手に合いマークを付した後、再度、鋼管用ネジ継の雄ネジ継手１と雌ネジ継手２とを分離状態にする場合は、再度、シリンダー接続部６にシリンダー装置５を接続し、締め上げ操作と逆方向にシリンダー装置５を動作させて雄ネジ継手１を弛み方向に螺動させてから、人力により分離操作すれば良い。 For example, in the case where the male screw joint 1 and the female screw joint 2 of the steel pipe screw joint are separated from each other after the mating mark is given to the steel pipe screw joint, the cylinder device is again connected to the cylinder connecting portion 6. 5 is connected, the cylinder device 5 is operated in the direction opposite to the tightening operation, and the male threaded joint 1 is screwed in the slack direction.

尚、本発明は、本実施例に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。 Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

１雄ネジ継手
２雌ネジ継手
３第一継手固定部
４第二継手固定部
５シリンダー装置
６シリンダー接続部
７継手固定装置
８継手固定基板部
９回動基板部
10 第一位置決め調整孔
11 第二位置決め調整孔
12 挿入係止部材
13 基台部 DESCRIPTION OF SYMBOLS 1 Male threaded joint 2 Female threaded joint 3 First joint fixing part 4 Second joint fixing part 5 Cylinder device 6 Cylinder connection part 7 Joint fixing apparatus 8 Joint fixing board part 9 Rotating board part
10 First positioning adjustment hole
11 Second positioning adjustment hole
12 Insertion locking member
13 Base

Claims

A first joint to which one of the male threaded joints and the other female threaded joint of the threaded joint used for threaded joining of large-diameter metal pipes used as pillars and piles in the civil engineering field is fixed The second joint fixing portion with respect to one screw joint of the fixing portion, the second joint fixing portion to which the other joint is fixed, and the male screw joint and the female screw joint fixed to the first joint fixing portion. The male screw joint and the female screw, which are fixed to the first joint fixing part and the second joint fixing part and temporarily tightened. A torque is set by rotating one of the male threaded joint and the female threaded joint mounted on the second joint fixing portion by the operation of the cylinder device relative to the other threaded joint. Tighten the screw joint The second joint fixing portion is provided with a cylinder connecting portion to which the cylinder device is connected in the temporarily tightened state, and adjusts the position of the cylinder connecting portion to a predetermined cylinder connecting position. A screw joint tightening device having a position adjusting mechanism.

The position adjusting mechanism includes a joint fixing board portion having a joint fixing device for fixing the male screw joint or the female screw joint, and a cylinder connecting portion, and is rotatably provided on the joint fixing board portion. The rotating substrate portion includes a rotating substrate restraining means for disabling relative rotation of the rotating substrate portion with respect to the joint fixing substrate portion, and the rotating substrate portion is rotated relative to the joint fixing substrate portion. The cylinder connection part can be moved and adjusted to the cylinder connection position without screwing the male threaded joint or the female threaded joint fixed to the joint fixing substrate part by moving, and the rotational movement suppression The cylinder connecting portion is positioned at the cylinder connecting position by disabling the rotating substrate portion with respect to the joint fixing substrate portion by means. Threaded joint cinching system according to claim 1, symptoms.

The joint fixing board portion includes a plurality of first positioning adjustment holes arranged at predetermined intervals along the circumferential direction, and the rotating board portion includes the first positioning adjustment hole along the circumferential direction. It is set as the structure which has several 2nd positioning adjustment holes arrange | positioned at a different predetermined space | interval, and the said 1st positioning adjustment hole and the said 2nd positioning adjustment hole were temporarily tightened with the said male threaded joint and the said female threaded joint When the cylinder connection portion is disposed at the cylinder connection position in a state, any one of the first positioning adjustment holes and any one of the second positioning adjustment holes are in communication with each other. The position adjusting mechanism rotates the rotating substrate portion relative to the joint fixing substrate portion so that the cylinder connecting portion is arranged at the cylinder connecting position, and the first positioning adjusting hole in a communication state When The insertion locking member as the rotation operation suppression means is inserted and disposed in the two positioning adjustment holes, so that the rotation substrate portion is in a state in which the rotation operation is impossible with respect to the joint fixing substrate portion. The threaded joint tightening device according to claim 2, wherein a cylinder connecting portion is positioned at the cylinder connecting position.

The first joint fixing portion and the cylinder device are provided on a base portion installed on the floor, and the cylinder device is disposed symmetrically across the first joint fixing portion provided on the base portion. The second joint fixing portion is configured to be separated from the base portion, and one of the male screw joint and the female screw joint is provided on the first joint fixing portion provided on the base portion. A joint is fixed, the other joint is fixed to the second joint fixing part, and the other joint fixed to the second joint fixing part is above the one joint fixed to the first joint fixing part. The cylinder connecting portion is positioned at the cylinder connecting position, the cylinder device is connected to the cylinder connecting portion, the cylinder device is operated, and the second cylinder is operated. Rotate the joint fixing part Then, the other joint fixed to the second joint fixing portion is screwed and screwed to the one joint, and when the operating resistance of the cylinder device reaches a set torque, The screw joint tightening according to any one of claims 1 to 3, wherein the operation is stopped and the tightening operation of the male screw joint and the female screw joint is stopped. apparatus.