JP6534916B2 - How to remove the reamer bolt and reamer bolt - Google Patents
How to remove the reamer bolt and reamer bolt Download PDFInfo
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- JP6534916B2 JP6534916B2 JP2015225772A JP2015225772A JP6534916B2 JP 6534916 B2 JP6534916 B2 JP 6534916B2 JP 2015225772 A JP2015225772 A JP 2015225772A JP 2015225772 A JP2015225772 A JP 2015225772A JP 6534916 B2 JP6534916 B2 JP 6534916B2
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本発明は、リーマボルトに関し、特にリーマボルトの取り外し機能に関する。 The present invention relates to a reamer bolt, and more particularly to a removing function of the reamer bolt.
従来から、軸継手のフランジを連結するのにリーマボルトが使用されている。従来のリーマボルトは、被連結部材（フランジ）を貫通する貫通穴に挿通され、先端部がナットで締め付けられる（例えば、特許文献１および２参照）。 Conventionally, a reamer bolt is used to connect a flange of a shaft joint. A conventional reamer bolt is inserted into a through hole that penetrates a coupled member (flange), and the tip end portion is tightened with a nut (see, for example, Patent Documents 1 and 2).
リーマボルトは、連結部品同士の芯出しを行うことを目的としているため、通常のボルトに比べて高い位置決め精度（芯出し精度）が要求され、リーマボルトと貫通穴との間の隙間は極めて小さい。リーマボルトや貫通穴は炭素鋼で製造されることが多く、長期間の使用により錆が発生する場合があり、そのような場合にはリーマボルトを貫通穴から引き抜くのは容易ではない。 Since the reamer bolt is intended to center the connection parts, higher positioning accuracy (centering accuracy) is required as compared to a normal bolt, and the gap between the reamer bolt and the through hole is extremely small. Reamer bolts and through holes are often made of carbon steel, and rust may occur during long-term use, and in such a case, it is not easy to pull out the reamer bolts from the through holes.
しかしながら、従来のリーマボルトにおいては、リーマボルトの取り外しについて何ら考慮がなされていなかった。 However, in the conventional reamer bolt, no consideration was given to removal of the reamer bolt.
本発明は、上記の課題に鑑みてなされたもので、容易に取り外しをすることのできるリーマボルトを提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a reamer bolt which can be easily removed.
本発明のリーマボルトは、被連結部材を貫通する貫通孔に挿入されるスリーブ部材と、前記スリーブ部材のボルト孔に挿入されるボルト部材と、前記ボルト部材の先端部に螺着されるナット部材と、を備え、前記ボルト孔の内周には、第１のねじ部が設けられ、前記ボルト部材の軸部の外周には、前記第１のねじ部に螺合する第２のねじ部が設けられ、前記ボルト部材を前記スリーブ部材に対してねじ緩め方向に回転させることにより、前記スリーブ部材から前記ボルト部材を中間位置まで引き抜き、前記被連結部材と前記ボルト部材の頭部との間にスペーサ部材を介在させた状態で、前記ボルト部材を前記スリーブ部材に対してねじ締め方向に回転させることにより、前記スリーブ部材が前記貫通孔から引き抜き可能である。 The reamer bolt according to the present invention comprises a sleeve member inserted into a through hole passing through a coupled member, a bolt member inserted into the bolt hole of the sleeve member, and a nut member screwed to the tip of the bolt member. A first screw portion is provided on an inner periphery of the bolt hole, and a second screw portion screwed to the first screw portion is provided on an outer periphery of a shaft portion of the bolt member. And rotating the bolt member relative to the sleeve member in a screw loosening direction to pull out the bolt member from the sleeve member to an intermediate position, and a spacer between the connected member and the head of the bolt member The sleeve member can be pulled out of the through hole by rotating the bolt member in the screw tightening direction with respect to the sleeve member with the members interposed.
この構成により、リーマボルトを容易に取り外すことができる。この場合、まず、ボルト部材をスリーブ部材に対してねじ緩め方向に回転させて、スリーブ部材からボルト部材を中間位置まで引き抜く。つぎに、被連結部材とボルト部材の頭部との間にスペーサ部材を介在させて、ボルト部材をスリーブ部材に対してねじ締め方向に回転させる。このとき、ボルト部材はスペーサ部材に当接しているのでねじ込み方向（下方向）に移動せず、その場で回転する。スリーブ部材の外周面と貫通孔の内周面との間の固着力（摩擦力）がボルト部材を回転させる力より大きい場合、スリーブ部材は貫通孔の中で回転しない。ボルト部材の回転力はスリーブ部材の引き抜き力に変換され、スリーブ部材が引き抜き方向（上方向）へ移動する。これにより、スリーブ部材を貫通孔から引き抜くことができる。 This configuration allows the reamer bolt to be easily removed. In this case, first, the bolt member is rotated in the screw loosening direction with respect to the sleeve member, and the bolt member is pulled out of the sleeve member to an intermediate position. Next, a spacer member is interposed between the coupled member and the head of the bolt member, and the bolt member is rotated in the screw tightening direction with respect to the sleeve member. At this time, since the bolt member is in contact with the spacer member, it does not move in the screwing direction (downward direction), but rotates on the spot. If the bonding force (frictional force) between the outer peripheral surface of the sleeve member and the inner peripheral surface of the through hole is larger than the force for rotating the bolt member, the sleeve member does not rotate in the through hole. The rotational force of the bolt member is converted to the withdrawal force of the sleeve member, and the sleeve member moves in the withdrawal direction (upward direction). Thus, the sleeve member can be pulled out of the through hole.
なお、スリーブ部材の外周面と貫通孔の内周面との間の固着力（摩擦力）がボルト部材を回転させる力より小さい場合には、スリーブ部材は貫通孔の中で回転する。このような場合には、ボルト部材をスリーブ部材と一体の状態で引き抜くことによって、スリーブ部材を貫通孔から容易に引き抜くことができる。 When the adhesion (frictional force) between the outer peripheral surface of the sleeve member and the inner peripheral surface of the through hole is smaller than the force for rotating the bolt member, the sleeve member rotates in the through hole. In such a case, the sleeve member can be easily pulled out of the through hole by pulling out the bolt member integrally with the sleeve member.
また、本発明のリーマボルトでは、前記第１のねじ部は、前記ボルト孔の全長にわたって形成され、前記第２のねじ部は、前記ボルト部材の軸部の全長にわたって形成されてもよい。 Further, in the reamer bolt of the present invention, the first screw portion may be formed over the entire length of the bolt hole, and the second screw portion may be formed over the entire length of the shaft portion of the bolt member.
この構成により、ボルト部材の軸部とボルト孔の全長を利用してスリーブ部材の引き抜きを行うことができる。 With this configuration, the sleeve member can be pulled out using the entire length of the shaft portion of the bolt member and the bolt hole.
また、本発明のリーマボルトでは、前記ボルト部材の頭部の前記被連結部材側の面には、前記ボルト部材を前記スリーブ部材に対してねじ締め方向に回転させて前記スリーブ部材を前記貫通孔から引き抜くときに、前記スペーサ部材と当接する当接部が設けられてもよい。 Further, in the reamer bolt according to the present invention, the bolt member is rotated in the screw tightening direction with respect to the sleeve member on the surface on the connected member side of the head of the bolt member to cut the sleeve member from the through hole. At the time of withdrawal, an abutment portion may be provided which abuts on the spacer member.
この構成により、被連結部材とボルト部材の頭部との間にスペーサ部材を介在させて、ボルト部材をスリーブ部材に対してねじ締め方向に回転させるときに、ボルト部材の頭部の被連結部材の側の面（下面）の当接部がスペーサ部材に当接して、ボルト部材がねじ込み方向（下方向）に移動せず、その場で回転する。これにより、ボルト部材の回転力をスリーブ部材の引き抜き力に変換させることができる。 With this configuration, when the spacer member is interposed between the coupled member and the head of the bolt member, and the bolt member is rotated in the screw tightening direction with respect to the sleeve member, the coupled member of the head of the bolt member The contact part of the surface (lower surface) on the side of the lower part abuts on the spacer member, and the bolt member does not move in the screwing direction (downward direction) and rotates on the spot. Thus, the rotational force of the bolt member can be converted to the withdrawal force of the sleeve member.
また、本発明のリーマボルトでは、前記被連結部材は、軸継手のフランジであってもよい。 Further, in the reamer bolt of the present invention, the coupled member may be a flange of a shaft coupling.
この構成により、軸継手のフランジをリーマボルトで連結することができ、軸継手のメンテナンス時にはリーマボルトを容易に取り外すことができる。軸継手のフランジをリーマボルトで連結する場合には、リーマボルトの取り付けや取り外しのための作業スペースが限られることが多く、取り付けや取り外し用の工具が使用できない場合があるが、本発明のリーマボルトによれば、比較的小さい作業スペースでもリーマボルトを容易に取り外すことができる。 With this configuration, the flanges of the shaft coupling can be connected by a reamer bolt, and the reamer bolt can be easily removed during maintenance of the shaft coupling. When connecting the flanges of the shaft joint with a reamer bolt, the work space for installing or removing the reamer bolt is often limited, and tools for installing or removing may not be available. However, the reamer bolt of the present invention For example, the reamer bolt can be easily removed even in a relatively small work space.
本発明のリーマボルトの取り外し方法は、被連結部材を貫通する貫通孔に挿入されるスリーブ部材と、前記スリーブ部材のボルト孔に挿入されるボルト部材と、前記ボルト部材の先端部に螺着されるナット部材と、を備えたリーマボルトの取り外し方法であって、前記ボルト孔の内周には、第１のねじ部が設けられ、前記ボルト部材の軸部の外周には、前記第１のねじ部に螺合する第２のねじ部が設けられ、前記リーマボルトの取り外し方法は、前記ボルト部材を前記スリーブ部材に対してねじ緩め方向に回転させることにより、前記スリーブ部材から前記ボルト部材を中間位置まで引き抜くことと、前記被連結部材と前記ボルト部材の頭部との間にスペーサ部材を介在させた状態で、前記ボルト部材を前記スリーブ部材に対してねじ締め方向に回転させることにより、前記スリーブ部材が前記貫通孔から引き抜くことと、を含んでいる。 In the method for removing a reamer bolt according to the present invention, a sleeve member inserted into a through hole passing through a coupled member, a bolt member inserted into a bolt hole of the sleeve member, and a tip end of the bolt member are screwed A method for removing a reamer bolt comprising a nut member, wherein a first screw portion is provided on an inner periphery of the bolt hole, and the first screw portion is provided on an outer periphery of a shaft portion of the bolt member. A second threaded portion for screwing to the sleeve, and the method of removing the reamer bolt is to move the bolt member from the sleeve member to an intermediate position by rotating the bolt member with respect to the sleeve member in a screw loosening direction How to screw the bolt member to the sleeve member in a state where the spacer member is interposed between the connecting member and the head of the bolt member By rotating the said sleeve member contains a, and to withdraw from the through hole.
この方法によっても、上記と同様に、リーマボルトを容易に取り外すことができる。この場合、まず、ボルト部材をスリーブ部材に対してねじ緩め方向に回転させて、スリーブ部材からボルト部材を中間位置まで引き抜く。つぎに、被連結部材とボルト部材の頭部との間にスペーサ部材を介在させて、ボルト部材をスリーブ部材に対してねじ締め方向に回転させる。このとき、ボルト部材はスペーサ部材に当接しているのでねじ込み方向（下方向）に移動せず、その場で回転する。スリーブ部材の外周面と貫通孔の内周面との間の固着力（摩擦力）がボルト部材を回転させる力より大きい場合、スリーブ部材は貫通孔の中で回転しない。ボルト部材の回転力はスリーブ部材の引き抜き力に変換され、スリーブ部材が引き抜き方向（上方向）へ移動する。これにより、スリーブ部材を貫通孔から引き抜くことができる。 Also by this method, the reamer bolt can be easily removed as described above. In this case, first, the bolt member is rotated in the screw loosening direction with respect to the sleeve member, and the bolt member is pulled out of the sleeve member to an intermediate position. Next, a spacer member is interposed between the coupled member and the head of the bolt member, and the bolt member is rotated in the screw tightening direction with respect to the sleeve member. At this time, since the bolt member is in contact with the spacer member, it does not move in the screwing direction (downward direction), but rotates on the spot. If the bonding force (frictional force) between the outer peripheral surface of the sleeve member and the inner peripheral surface of the through hole is larger than the force for rotating the bolt member, the sleeve member does not rotate in the through hole. The rotational force of the bolt member is converted to the withdrawal force of the sleeve member, and the sleeve member moves in the withdrawal direction (upward direction). Thus, the sleeve member can be pulled out of the through hole.
本発明によれば、リーマボルトを容易に取り外すことができる。 According to the present invention, the reamer bolt can be easily removed.
以下、本発明の実施の形態のリーマボルトについて、図面を用いて説明する。本実施の形態では、ポンプ等のトルクを伝達する軸継手に用いられるリーマボルトの場合を例示する。 Hereinafter, the reamer bolt of the embodiment of the present invention will be described using the drawings. In the present embodiment, the case of a reamer bolt used for a shaft coupling for transmitting torque, such as a pump, is exemplified.
本発明の実施の形態のリーマボルトの構成を、図面を参照して説明する。図１は、本実施の形態のリーマボルトの分解図であり、図２は、リーマボルトの取り付け状態の側面図である。図１および図２に示すように、リーマボルト１は、スリーブ部材２と、ボルト部材３と、ナット部材４を備えている。スリーブ部材２は、軸継手のフランジ５を貫通する貫通孔６に挿入される部材である。リーマボルト１は、通常のボルトに比べて高い位置決め精度（芯出し精度）が要求される。そのため、スリーブ部材２の外周面と貫通孔６の内周面は、高い精度で表面加工がなされている。 The configuration of the reamer bolt according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded view of the reamer bolt of the present embodiment, and FIG. 2 is a side view of the reamer bolt in a mounted state. As shown in FIGS. 1 and 2, the reamer bolt 1 includes a sleeve member 2, a bolt member 3 and a nut member 4. The sleeve member 2 is a member inserted into the through hole 6 penetrating the flange 5 of the shaft coupling. The reamer bolt 1 is required to have high positioning accuracy (centering accuracy) as compared to a normal bolt. Therefore, the outer peripheral surface of the sleeve member 2 and the inner peripheral surface of the through hole 6 are subjected to surface processing with high accuracy.
ボルト部材３は、頭部７と軸部８から構成される。ボルト部材３の頭部７は、スリーブ部材２のボルト孔９に挿入される。ナット部材４は、ボルト部材３の軸部８の先端部に螺着される。ボルト孔９の内周には、第１のねじ部１０が設けられており、ボルト部材３の軸部８の外周には、第１のねじ部１０に螺合する第２のねじ部１１が設けられている。この場合、第１のねじ部１０は、ボルト孔９の全長にわたって形成されており、第２のねじ部１１は、ボルト部材３の軸部８の全長にわたって形成されている。ボルト孔９の内周（第１のねじ部１０）およびボルト部材３の軸部８の外周（第２のねじ部１１）の加工精度は、リーマボルト１の位置決め精度に影響を及ぼさない。したがって、ボルト孔９の内周（第１のねじ部１０）およびボルト部材３の軸部８の外周（第２のねじ部１１）の加工精度は、スリーブ部材２の外周面と貫通孔６の内周面の表面加工に比べて高くなくてよい。 The bolt member 3 is composed of a head 7 and a shaft 8. The head 7 of the bolt member 3 is inserted into the bolt hole 9 of the sleeve member 2. The nut member 4 is screwed to the tip of the shaft portion 8 of the bolt member 3. A first screw portion 10 is provided on the inner periphery of the bolt hole 9, and a second screw portion 11 screwed to the first screw portion 10 is provided on the outer periphery of the shaft portion 8 of the bolt member 3. It is provided. In this case, the first screw portion 10 is formed over the entire length of the bolt hole 9, and the second screw portion 11 is formed over the entire length of the shaft portion 8 of the bolt member 3. The processing accuracy of the inner circumference (the first screw portion 10) of the bolt hole 9 and the outer circumference (the second screw portion 11) of the shaft portion 8 of the bolt member 3 do not affect the positioning accuracy of the reamer bolt 1. Therefore, the processing accuracy of the inner periphery of the bolt hole 9 (first screw portion 10) and the outer periphery of the shaft portion 8 of the bolt member 3 (second screw portion 11) is the same as that of the outer peripheral surface of the sleeve member 2 and the through hole 6. It does not need to be higher than the surface processing of the inner peripheral surface.
また、ボルト部材３の頭部７の下面（被連結部材側の面）には、ボルト部材３をスリーブ部材２に対してねじ締め方向に回転させてスリーブ部材２を貫通孔６から引き抜くときに、スペーサ部材１２と当接する当接部１３が設けられている。ここで、「当接」とは、スペーサ部材１２と直接当接することだけでなく、座金１４などを介して間接的に当接することも含む（図４参照）。なお、スリーブ部材２の引き抜きおよびスペーサ部材１２については、後で詳しく説明する。 When the bolt member 3 is rotated in the screw tightening direction with respect to the sleeve member 2 on the lower surface (the surface on the connected member side) of the head portion 7 of the bolt member 3 and the sleeve member 2 is pulled out from the through hole 6 An abutting portion 13 that abuts on the spacer member 12 is provided. Here, “contact” includes not only direct contact with the spacer member 12 but also indirect contact via a washer 14 or the like (see FIG. 4). The removal of the sleeve member 2 and the spacer member 12 will be described in detail later.
リーマボルト１を取り付ける場合、すなわち、軸継手のフランジ５を連結する場合には、まず、スリーブ部材２を貫通孔６に挿入し、座金１４を介した状態で、スリーブ部材２にボルト部材３を螺着し、ボルト部材３の先端にナット部材４を螺着する（図２参照）。 When attaching the reamer bolt 1, that is, when connecting the flange 5 of the shaft coupling, first, insert the sleeve member 2 into the through hole 6 and screw the bolt member 3 onto the sleeve member 2 with the washer 14 interposed. The nut member 4 is screwed onto the tip of the bolt member 3 (see FIG. 2).
リーマボルト１を取り外す場合には、まず、ボルト部材３の先端からナット部材４を取り外し、ボルト部材３をねじ緩め方向に回転させることにより、スリーブ部材２からボルト部材３を中間位置まで引き抜く（図３参照）。中間位置は、スペーサ部材１２の上面の高さより当接部１３（ボルト部材３の頭部７の下面）が高くなる位置である。つぎに、ボルト部材３の頭部７の下面とフランジ５の上面との間にスペーサ部材１２を挟む（図４参照）。そして、その状態で、ボルト部材３をスリーブ部材２に対してねじ締め方向に回転させることにより、スリーブ部材２を貫通孔６から中間位置まで引き抜く（図５参照）。 When removing the reamer bolt 1, first, remove the nut member 4 from the tip of the bolt member 3 and rotate the bolt member 3 in the loosening direction to pull out the bolt member 3 from the sleeve member 2 to an intermediate position (FIG. 3) reference). The middle position is a position where the contact portion 13 (the lower surface of the head 7 of the bolt member 3) is higher than the height of the upper surface of the spacer member 12. Next, the spacer member 12 is sandwiched between the lower surface of the head 7 of the bolt member 3 and the upper surface of the flange 5 (see FIG. 4). Then, in this state, by rotating the bolt member 3 with respect to the sleeve member 2 in the screw tightening direction, the sleeve member 2 is pulled out from the through hole 6 to an intermediate position (see FIG. 5).
この状態から、さらに、ボルト部材３をねじ緩め方向に回転させることにより、スリーブ部材２からボルト部材３を引き抜き、ボルト部材３の頭部７の下面とフランジ５の上面との間に二つめのスペーサ部材１２を挟み、その状態で、ボルト部材３をスリーブ部材２に対してねじ締め方向に回転させることにより、スリーブ部材２を貫通孔６から完全に引き抜く（図６参照）。 From this state, by further rotating the bolt member 3 in the screw loosening direction, the bolt member 3 is pulled out from the sleeve member 2, and a second one is interposed between the lower surface of the head 7 of the bolt member 3 and the upper surface of the flange 5. By holding the spacer member 12 and rotating the bolt member 3 in the screw tightening direction with respect to the sleeve member 2 in this state, the sleeve member 2 is completely pulled out of the through hole 6 (see FIG. 6).
図７は、スペーサ部材１２の一例を示す図である。図７に示すスペーサ部材１２は、二つに分割可能とされており、一つに組み合わせた状態で、中央部にボルト部材３の軸部８が挿通する挿通孔１５が形成されている。挿通孔１５の大きさ（径）は、スリーブ部材２の外径より大きく、ボルト部材３の頭部７の外径より小さく設定される。このスペーサ部材１２は、二つに分割できるので、ボルト部材３を中間位置まで引き抜いた状態で、ボルト部材３の両側（前後または左右）からボルト部材３を挟むように取り付けることができる。なお、スペーサ部材１２は、分割可能でなくてもよい。その場合、図３の状態でボルト部材３をスリーブ部材２からすべて引き抜き、座金１４を取り外した後、図８のような分割式でない円筒型のスペーサ部材１２を設置し、スペーサ部材１２の挿通孔１５にボルト部材３の軸部８を挿入して、ボルト部材３をスリーブ部材２に中間位置まで螺着することにより、スペーサ部材１２をボルト部材３の頭部７の下面とフランジ５の上面との間に介在させることができる。また、図７や図８のようスペーサ部材１２を用意できない場合は、代わりとして図９のようなネジ穴１５がスリーブ部材２の外径よりも大きい汎用品のナットを複数重ねて使用してもよい。 FIG. 7 is a view showing an example of the spacer member 12. The spacer member 12 shown in FIG. 7 is dividable into two, and in a state of being combined into one, an insertion hole 15 through which the shaft 8 of the bolt member 3 is inserted is formed at the center. The size (diameter) of the insertion hole 15 is set to be larger than the outer diameter of the sleeve member 2 and smaller than the outer diameter of the head portion 7 of the bolt member 3. Since the spacer member 12 can be divided into two, the bolt member 3 can be attached so as to sandwich the bolt member 3 from both sides (front and rear or left and right) of the bolt member 3 in a state where the bolt member 3 is pulled out to an intermediate position. The spacer member 12 may not be divisible. In that case, after all the bolt members 3 are pulled out from the sleeve member 2 in the state of FIG. 3 and the washer 14 is removed, the cylindrical spacer member 12 which is not divided as shown in FIG. By inserting the shaft portion 8 of the bolt member 3 into the sleeve 15 and screwing the bolt member 3 to the middle position of the sleeve member 2, the spacer member 12 is formed on the lower surface of the head 7 of the bolt member 3 and the upper surface of the flange 5. Can be interposed between If the spacer member 12 can not be prepared as shown in FIGS. 7 and 8, instead of using a plurality of general purpose nuts in which screw holes 15 as shown in FIG. 9 are larger than the outer diameter of the sleeve member 2 Good.
このような本実施の形態のリーマボルト１によれば、リーマボルト１を容易に取り外すことができる。すなわち、上述のように、まず、ボルト部材３をスリーブ部材２に対してねじ緩め方向に回転させて、スリーブ部材２からボルト部材３を中間位置まで引き抜き、つぎに、被連結部材とボルト部材３の頭部７との間にスペーサ部材１２を介在させて、ボルト部材３をスリーブ部材２に対してねじ締め方向に回転させる。このとき、ボルト部材３はスペーサ部材１２に当接しているのでねじ込み方向（下方向）に移動せず、その場で回転する。スリーブ部材２の外周面と貫通孔６の内周面との間の固着力（摩擦力）がボルト部材３を回転させる力より大きい場合、スリーブ部材２は貫通孔６の中で回転しない。ボルト部材３の回転力はスリーブ部材２の引き抜き力に変換され、スリーブ部材２が引き抜き方向（上方向）へ移動する。これにより、スリーブ部材２を貫通孔６から引き抜くことができる。 According to such a reamer bolt 1 of the present embodiment, the reamer bolt 1 can be easily removed. That is, as described above, first, the bolt member 3 is rotated in the screw loosening direction with respect to the sleeve member 2 to pull the bolt member 3 from the sleeve member 2 to an intermediate position, and then the coupled member and the bolt member 3 The spacer member 12 is interposed between the head 7 and the head 7 to rotate the bolt member 3 in the screwing direction with respect to the sleeve member 2. At this time, since the bolt member 3 is in contact with the spacer member 12, the bolt member 3 does not move in the screwing direction (downward direction) but rotates on the spot. If the bonding force (frictional force) between the outer peripheral surface of the sleeve member 2 and the inner peripheral surface of the through hole 6 is larger than the force for rotating the bolt member 3, the sleeve member 2 does not rotate in the through hole 6. The rotational force of the bolt member 3 is converted to the withdrawal force of the sleeve member 2, and the sleeve member 2 moves in the withdrawal direction (upward direction). Thereby, the sleeve member 2 can be pulled out of the through hole 6.
なお、スリーブ部材２の外周面と貫通孔６の内周面との間の固着力（摩擦力）がボルト部材３を回転させる力より小さい場合には、スリーブ部材２は貫通孔６の中で回転する。このような場合には、ボルト部材３をスリーブ部材２と一体の状態で引き抜くことによって、スリーブ部材２を貫通孔６から容易に引き抜くことができる。 When the adhesion (frictional force) between the outer peripheral surface of the sleeve member 2 and the inner peripheral surface of the through hole 6 is smaller than the force for rotating the bolt member 3, the sleeve member 2 is in the through hole 6. Rotate. In such a case, the sleeve member 2 can be easily pulled out of the through hole 6 by pulling out the bolt member 3 integrally with the sleeve member 2.
本実施の形態では、第１のねじ部１０が、ボルト孔９の全長にわたって形成され、第２のねじ部１１は、ボルト部材３の軸部８の全長にわたって形成されているので、ボルト部材３の軸部８とボルト孔９の全長を利用してスリーブ部材２の引き抜きを行うことができる。 In the present embodiment, the first screw portion 10 is formed over the entire length of the bolt hole 9, and the second screw portion 11 is formed over the entire length of the shaft portion 8 of the bolt member 3. The sleeve member 2 can be pulled out using the entire length of the shaft portion 8 and the bolt hole 9 of the above.
また、本実施の形態では、被連結部材とボルト部材３の頭部７との間にスペーサ部材１２を介在させて、ボルト部材３をスリーブ部材２に対してねじ締め方向に回転させるときに、ボルト部材３の頭部７の被連結部材の側の面（下面）の当接部１３がスペーサ部材１２に当接して、ボルト部材３がねじ込み方向（下方向）に移動せず、その場で回転する。これにより、ボルト部材３の回転力をスリーブ部材２の引き抜き力に変換させることができる。 In the present embodiment, when the spacer member 12 is interposed between the coupled member and the head 7 of the bolt member 3 and the bolt member 3 is rotated in the screw tightening direction with respect to the sleeve member 2, The contact portion 13 of the surface (lower surface) of the head 7 of the bolt member 3 on the side of the coupled member abuts against the spacer member 12 so that the bolt member 3 does not move in the screwing direction (downward). Rotate. Thereby, the rotational force of the bolt member 3 can be converted to the withdrawal force of the sleeve member 2.
また、本実施の形態では、軸継手のフランジ５をリーマボルト１で連結することができ、軸継手のメンテナンス時にはリーマボルト１を容易に取り外すことができる。軸継手のフランジ５をリーマボルト１で連結する場合には、リーマボルト１の取り付けや取り外しのための作業スペースが限られることが多く、取り付けや取り外し用の工具が使用できない場合があるが、本実施の形態のリーマボルト１によれば、比較的小さい作業スペースでもリーマボルト１を容易に取り外すことができる。 Further, in the present embodiment, the flange 5 of the shaft joint can be connected by the reamer bolt 1, and the reamer bolt 1 can be easily removed at the time of maintenance of the shaft joint. When connecting the flange 5 of the shaft joint with the reamer bolt 1, the work space for attaching and detaching the reamer bolt 1 is often limited, and tools for attaching and detaching may not be used in some cases. According to the reamer bolt 1 of the form, the reamer bolt 1 can be easily removed even in a relatively small work space.
以上、本発明の実施の形態を例示により説明したが、本発明の範囲はこれらに限定されるものではなく、請求項に記載された範囲内において目的に応じて変更・変形することが可能である。 Although the embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these, and may be changed or modified according to the purpose within the scope described in the claims. is there.
例えば、上記の実施の形態では、リーマボルト１を軸継手のフランジ５を連結するために用いる場合を例示して説明したが、本発明の範囲はこれに限定されるものではなく、リーマボルトは、軸継手以外にも適用可能である。 For example, although the above embodiment exemplarily illustrates the case where the reamer bolt 1 is used to connect the flange 5 of the shaft coupling, the scope of the present invention is not limited to this, and the reamer bolt has a shaft It is applicable other than a coupling.
以上のように、本発明にかかるリーマボルトは、容易に取り外すことができるという効果を有し、ポンプ等のトルクを伝達する軸継手に用いられ、有用である。 As described above, the reamer bolt according to the present invention has an effect that it can be easily removed, and is useful as a shaft joint for transmitting torque such as a pump.
１ リーマボルト
２ スリーブ部材
３ ボルト部材
４ ナット部材
５ 軸継手のフランジ（被連結部材）
６ 貫通孔
７ 頭部
８ 軸部
９ ボルト孔
１０ 第１のねじ部
１１ 第２のねじ部
１２ スペーサ部材
１３ 当接部
１４ 座金
１５ 挿通孔
1 reamer bolt 2 sleeve member 3 bolt member 4 nut member 5 shaft joint flange (connected member)
6 through hole 7 head 8 shaft portion 9 bolt hole 10 first screw portion 11 second screw portion 12 spacer member 13 contact portion 14 washer 15 insertion hole
Claims (5)
前記スリーブ部材のボルト孔に挿入されるボルト部材と、
前記ボルト部材の先端部に螺着されるナット部材と、
を備え、
前記ボルト孔の内周には、第１のねじ部が設けられ、前記ボルト部材の軸部の外周には、前記第１のねじ部に螺合する第２のねじ部が設けられ、
前記ボルト部材を前記スリーブ部材に対してねじ緩め方向に回転させることにより、前記スリーブ部材から前記ボルト部材を中間位置まで引き抜き、前記被連結部材と前記ボルト部材の頭部との間にスペーサ部材を介在させた状態で、前記ボルト部材を前記スリーブ部材に対してねじ締め方向に回転させることにより、前記スリーブ部材が前記貫通孔から引き抜き可能であることを特徴とするリーマボルト。 A sleeve member inserted into a through hole passing through the coupled member;
A bolt member inserted into a bolt hole of the sleeve member;
A nut member screwed to the tip of the bolt member;
Equipped with
A first screw portion is provided on an inner periphery of the bolt hole, and a second screw portion screwed to the first screw portion is provided on an outer periphery of a shaft portion of the bolt member.
By rotating the bolt member with respect to the sleeve member in the screw loosening direction, the bolt member is pulled out of the sleeve member to an intermediate position, and a spacer member is interposed between the coupled member and the head of the bolt member A reamer bolt characterized in that the sleeve member can be pulled out from the through hole by rotating the bolt member in a screw tightening direction with respect to the sleeve member in the interposed state.
前記ボルト孔の内周には、第１のねじ部が設けられ、前記ボルト部材の軸部の外周には、前記第１のねじ部に螺合する第２のねじ部が設けられ、
前記リーマボルトの取り外し方法は、
前記ボルト部材を前記スリーブ部材に対してねじ緩め方向に回転させることにより、前記スリーブ部材から前記ボルト部材を中間位置まで引き抜くことと、
前記被連結部材と前記ボルト部材の頭部との間にスペーサ部材を介在させた状態で、前記ボルト部材を前記スリーブ部材に対してねじ締め方向に回転させることにより、前記スリーブ部材が前記貫通孔から引き抜くことと、
を含むリーマボルトの取り外し方法。 A reamer bolt comprising: a sleeve member inserted into a through hole passing through a connected member; a bolt member inserted into a bolt hole of the sleeve member; and a nut member screwed to a tip end of the bolt member How to remove,
A first screw portion is provided on an inner periphery of the bolt hole, and a second screw portion screwed to the first screw portion is provided on an outer periphery of a shaft portion of the bolt member.
The method of removing the reamer bolt is
Pulling the bolt member from the sleeve member to an intermediate position by rotating the bolt member with respect to the sleeve member in a screw loosening direction;
With the spacer member interposed between the coupled member and the head of the bolt member, the sleeve member is rotated through the through hole by rotating the bolt member in the screw tightening direction with respect to the sleeve member. Pulling out of the
How to remove the reamer bolt including.
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