JPH09296826A - Bolt fastening structure - Google Patents
Bolt fastening structureInfo
- Publication number
- JPH09296826A JPH09296826A JP8132540A JP13254096A JPH09296826A JP H09296826 A JPH09296826 A JP H09296826A JP 8132540 A JP8132540 A JP 8132540A JP 13254096 A JP13254096 A JP 13254096A JP H09296826 A JPH09296826 A JP H09296826A
- Authority
- JP
- Japan
- Prior art keywords
- bush
- fastening
- fastening bolt
- bolt
- fastened
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/076—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、回転軸又はロー
タのフランジなどの両被締結体をその通し穴に通した締
結ボルト及びテーパブッシュをもってずれが生じないよ
うに強固に締結するボルト締結構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt fastening structure for fastening both fastened bodies such as a rotary shaft or a flange of a rotor with fastening bolts and taper bushes which are passed through the through holes so as not to be displaced. It is a thing.
【０００２】[0002]
【従来の技術】図２は従来のボルト締結構造を示し、
（Ａ）は締結ボルト及びテーパブッシュを装着中の状
態、（Ｂ）はナットを螺着中の状態を示す。図２におい
て、１ａ，１ｂは被締結体、２は幹部にテーパがつけら
れた締結ボルト、３ａ，３ｂは締結ボルト２に螺着する
ナット、４は内面に締結ボルト２のテーパと同じ傾斜の
テーパがつけられたテーパブッシュ、９は締結するため
の軸方向の力を発揮する油圧負荷装置である。2. Description of the Related Art FIG. 2 shows a conventional bolt fastening structure,
(A) shows a state in which a fastening bolt and a taper bush are being mounted, and (B) shows a state in which a nut is being screwed. In FIG. 2, 1a and 1b are to-be-fastened objects, 2 is a fastening bolt having a tapered stem portion, 3a and 3b are nuts to be screwed to the fastening bolt 2, and 4 is an inner surface having the same inclination as the taper of the fastening bolt 2. A tapered taper bush 9 is a hydraulic load device that exerts an axial force for fastening.
【０００３】図２（Ａ）に示すように、被締結体１ａ，
１ｂの通し穴の心を合わせて対向面を接合させ、被締結
体１ａ，１ｂの通し穴に締結ボルト２及びテーパブッシ
ュ４を挿入し、テーパブッシュ４の厚い方の端にブッシ
ュ受け止め具５を当接させ、油圧負荷装置９を締結ボル
ト２の一方のねじにねじ込んで図示のように装着し、図
示しない油圧源の油圧を油圧入口９ｄから油圧室９ｃに
注入すると、油圧室９ｃ内の油圧により、外側油圧部品
９ｂはブッシュ受け止め具５を介して被締結体１ｂ及び
テーパブッシュ４を図の左方に押し、内側油圧部品９ａ
は締結ボルト２を図の右方へ引っ張る。ブッシュ受け止
め具５で受け止められたテーパブッシュ４に対して締結
ボルト２が図の右方へ移動すると、締結ボルト２のテー
パとテーパブッシュ４のテーパとのくさび作用により、
テーパブッシュ４は締結ボルト２により拡径されて、被
締結体１ａ，１ｂの通し穴に圧接する。このようにして
テーパブッシュ４を被締結体１ａ，１ｂに圧接させた
後、油圧負荷装置９をねじ戻して外し、ブッシュ受け止
め具５を抜き取る。As shown in FIG. 2A, the objects to be fastened 1a,
Aligning the centers of the through holes of 1b, joining the opposing surfaces, inserting the fastening bolt 2 and the taper bush 4 into the through holes of the fastened bodies 1a, 1b, and attaching the bush catch 5 to the thicker end of the taper bush 4. When the hydraulic load device 9 is brought into contact and screwed into one screw of the fastening bolt 2 as shown in the figure, and the hydraulic pressure of a hydraulic source (not shown) is injected into the hydraulic chamber 9c from the hydraulic inlet 9d, the hydraulic pressure in the hydraulic chamber 9c is increased. As a result, the outer hydraulic component 9b pushes the fastened body 1b and the taper bush 4 to the left side of the drawing through the bush receiving member 5, and the inner hydraulic component 9a is pressed.
Pulls the fastening bolt 2 to the right in the figure. When the fastening bolt 2 moves to the right in the figure with respect to the taper bush 4 received by the bush catcher 5, the wedge action of the taper of the fastening bolt 2 and the taper of the taper bush 4 causes a wedge action.
The taper bush 4 is expanded in diameter by the fastening bolt 2 and comes into pressure contact with the through holes of the fastened bodies 1a and 1b. After the taper bush 4 is pressed against the fastened bodies 1a and 1b in this manner, the hydraulic load device 9 is unscrewed and removed, and the bush catch 5 is pulled out.
【０００４】次に、図２（Ｂ）に示すように、締結ボル
ト２にナット３ａ，３ｂをねじ込んで取り付け、ナット
３ａの外側に負荷受け具７を置き、油圧負荷装置９を締
結ボルト２にねじ込んで取り付ける。ナット３ｂを締め
込むと同時に、油圧負荷装置９に油圧を加えて外側油圧
部品９ｂから負荷受け具７を介して被締結体１ｂ，１ａ
を押し、内側油圧部品９ａにより締結ボルト２を図の右
方へ強力に引っ張って締結ボルト２に張力をかけた状態
としたままで、ナット３ａをねじ込んで被締結体１ｂの
端面に強く当接させる。これで締結ボルト２に張力をも
たせた状態が固定されたので、その後、油圧負荷装置９
を緩めてねじ戻して外し、負荷受け具７も外して締結が
完了する。前記のように、締結ボルト２とテーパブッシ
ュ４とのテーパ作用により、被締結体１ａ，１ｂの通し
穴とテーパブッシュ４の外面とが圧接するとともに、締
結ボルト２の張力によりナット３ｂ，３ａが被締結体１
ａ，１ｂを挾み付けて強固かつ一体的に締結する。Next, as shown in FIG. 2 (B), nuts 3a and 3b are screwed into the fastening bolts 2 and mounted, a load receiver 7 is placed outside the nuts 3a, and a hydraulic load device 9 is attached to the fastening bolts 2. Install by screwing. At the same time as tightening the nut 3b, a hydraulic pressure is applied to the hydraulic load device 9 to connect the fastened bodies 1b, 1a from the outer hydraulic component 9b through the load receiver 7.
Press and pull the fastening bolt 2 strongly to the right in the figure by the inner hydraulic component 9a to keep the fastening bolt 2 in tension, and screw the nut 3a into contact with the end face of the fastened body 1b strongly. Let With this, the state in which the fastening bolt 2 is given a tension is fixed, and thereafter the hydraulic load device 9
Is loosened and screwed back to remove it, and the load receiver 7 is also removed to complete the fastening. As described above, due to the taper action of the fastening bolt 2 and the taper bush 4, the through holes of the fastened bodies 1a and 1b and the outer surface of the taper bush 4 are in pressure contact, and the tension of the fastening bolt 2 causes the nuts 3b and 3a to move. Fastened object 1
The a and 1b are sandwiched and firmly and integrally fastened.
【０００５】[0005]
【発明が解決しようとする課題】従来のボルト締結構造
は上記のようであり、また、実開昭６１−１７３８２５
号公報にも同様な締結構造が記載されているが、図２
（Ｂ）に示すように油圧負荷装置９により締結ボルト２
を引っ張ったとき、締結ボルト２のテーパ付き外面がテ
ーパブッシュ４のテーパ付き内面に圧接しているので、
締結ボルト２とテーパブッシュ４との間に大きな摩擦力
が生じて、油圧負荷装置９により締結ボルト２に付与さ
れる引張り力の一部は損失となり、締結ボルト２の引張
り力の全部が被締結体１ａ，１ｂを締め付ける力にはな
らない。また、上記力の損失は摩擦に起因するので、そ
の大きさが不安定不確実であるというような課題があっ
た。The conventional bolt fastening structure is as described above, and it is also described in Japanese Utility Model Laid-Open No. 61-173825.
Although a similar fastening structure is described in Japanese Patent Publication No.
As shown in (B), the fastening bolt 2 is attached by the hydraulic load device 9.
Is pulled, the tapered outer surface of the fastening bolt 2 is in pressure contact with the tapered inner surface of the taper bush 4,
A large frictional force is generated between the fastening bolt 2 and the taper bush 4, a part of the tensile force applied to the fastening bolt 2 by the hydraulic load device 9 is lost, and the entire tensile force of the fastening bolt 2 is fastened. It does not serve to tighten the bodies 1a and 1b. Further, since the loss of the force is caused by friction, there is a problem that its magnitude is unstable and uncertain.
【０００６】この発明は上記課題を解消するためになさ
れたもので、締結ボルト２とテーパブッシュ４との間の
摩擦力をなくすか小さくして締結ボルト２の張力の損失
を少なくし、もって、締結ボルト２の張力の大部分が被
締結体１ａ，１ｂを締め付ける力になるようにして、強
固かつ確実に締結することができるボルト締結構造を得
ることを目的とする。The present invention has been made in order to solve the above problems, and eliminates or reduces the frictional force between the fastening bolt 2 and the taper bush 4 to reduce the tension loss of the fastening bolt 2 and thus An object of the present invention is to obtain a bolt fastening structure capable of fastening firmly and surely so that most of the tension of the fastening bolt 2 becomes a force to fasten the fastened bodies 1a, 1b.
【０００７】[0007]
【課題を解決するための手段】この発明に係るボルト締
結構造は、両被締結体の通し穴に締結ボルトと共に挿入
するテーパブッシュを内面がテーパとなっている外側の
テーパブッシュと外面がテーパとなっている内側のテー
パブッシュとの組み合わせとし、前記締結ボルトはテー
パのないボルトとしたものである。また、この内外のテ
ーパブッシュの一方を受け止めて他方を油圧負荷装置に
より押し込むことによって外側のテーパブッシュを前記
両被締結体の通し穴に圧接させた後、前記油圧負荷装置
により前記締結ボルトに張力を付与してナットを螺着し
て前記両被締結体を締結したものである。In the bolt fastening structure according to the present invention, an outer taper bush whose inner surface is tapered and a taper bush whose outer surface is tapered are inserted into the through holes of both fastened bodies together with the fastening bolts. The fastening bolt is a non-tapered bolt in combination with the inner tapered bush. Further, one of the inner and outer taper bushes is received and the other is pushed by a hydraulic load device to press the outer taper bushes into the through holes of both the fastened bodies, and then the hydraulic load device tensions the fastening bolts. And the nuts are screwed together to fasten both the objects to be fastened.
【０００８】この発明におけるボルト締結構造は、内面
がテーパとなっている外側のテーパブッシュと、外面が
テーパとなっている内側のテーパブッシュと、テーパの
ない締結ボルトとからなるので、内外のテーパブッシュ
の一方を受け止めて他方を押し込めば、内外のテーパの
くさび作用によって外側のテーパブッシュは両被締結体
の通し穴に圧接する。締結ボルトはテーパがなく、この
締結ボルトと内側のテーパブッシュとの間は任意の状態
に形成することができるので、接触圧力が零又は小さく
なるように形成すれば摩擦の問題がなくなり、締結ボル
トの張力は全て両被締結体を締付ける力となり、両被締
結体は強力かつ確実に締結される。The bolt fastening structure according to the present invention comprises an outer taper bush whose inner surface is tapered, an inner taper bush whose outer surface is tapered, and a non-tapered fastening bolt. When one of the bushes is received and the other is pushed in, the wedge action of the inner and outer taper causes the outer taper bush to press-contact with the through holes of both fastened bodies. The fastening bolt does not have a taper, and since it can be formed in an arbitrary state between this fastening bolt and the inner tapered bush, if the contact pressure is formed to be zero or small, the problem of friction will be eliminated and the fastening bolt All of the tensions serve as a force to tighten both fastened bodies, and both fastened bodies are securely and securely fastened.
【０００９】[0009]
【発明の実施の形態】以下、この発明によるボルト締結
構造の実施の一形態を図について説明する。図１（Ａ）
はテーパブッシュを装着中の状態、図１（Ｂ）は締結ボ
ルトに張力を付与してナットを螺着中の状態を示す。図
１において、１ａ，１ｂは被締結体、２はテーパのない
通常の円柱形状の締結ボルト、３ａ，３ｂは締結ボルト
２に螺着するナット、４ｉは外面にテーパがつけられた
内側テーパブッシュ、４ｏは内面にテーパがつけられた
外側テーパブッシュ、５はブッシュ受け止め具、６はブ
ッシュ負荷用具、７は負荷受け具、９は締結するに際し
て軸方向の力を発揮させるように使用する油圧負荷装置
である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a bolt fastening structure according to the present invention will be described below with reference to the drawings. Figure 1 (A)
Shows a state where the taper bush is being mounted, and FIG. 1B shows a state where the nut is screwed by applying tension to the fastening bolt. In FIG. 1, 1a and 1b are to-be-fastened objects, 2 is a normal column-shaped fastening bolt without a taper, 3a and 3b are nuts to be screwed to the fastening bolt 2, and 4i is an inner tapered bush with a tapered outer surface. Reference numeral 4o is an outer tapered bush having a tapered inner surface, 5 is a bush receiver, 6 is a bush load tool, 7 is a load receiver, and 9 is a hydraulic load used to exert an axial force when fastening. It is a device.
【００１０】図１に示すように、被締結体１ａ，１ｂに
は、締結ボルト２及び内外のテーパブッシュ４ｉ，４ｏ
が挿入されるように精密に仕上げられた通し穴があけら
れている。締結ボルト２の幹部はテーパがなく通常の直
円柱形状であり、締結ボルト２の両端部にはナット３
ａ，３ｂを螺着すべきねじが切られている。なお、締結
ボルト２の図の右端部のねじは、締結時にナット３ａの
外側に油圧負荷装置９を螺着することができるように長
めに形成されている。締結ボルト２及びこれに螺着する
ナット３ａ，３ｂは、被締結体１ａ，１ｂを所定の力で
締付けることができるように形成されている。内側テー
パブッシュ４ｉの外面のテーパと外側テーパブッシュ４
ｏの内面のテーパとは同じ傾斜度である。外側テーパブ
ッシュ４ｏの外面は自由状態で被締結体１ａ，１ｂの通
し穴になるべく隙間なく嵌合するように形成されてい
る。内側テーパブッシュ４ｉの内面と締結ボルト２の幹
部との間は自由状態で若干の隙間があるように形成され
ており、締結作業により内側テーパブッシュ４ｉの内径
が小さくなるので、締結完了状態で締結ボルト２に軽く
接する程度に形成されている。なお、締結ボルト２の幹
部及び内外のテーパブッシュ４ｉ，４ｏの各面も精密に
仕上げられている。As shown in FIG. 1, the fastening bolts 2 and the inner and outer taper bushes 4i, 4o are attached to the fastened bodies 1a, 1b.
A precision-finished through hole has been drilled to insert the. The trunk of the fastening bolt 2 has a normal right circular cylinder shape without a taper, and the nut 3 is provided at both ends of the fastening bolt 2.
The screw to which a and 3b should be screwed is cut. The screw at the right end of the fastening bolt 2 in the drawing is formed to be long so that the hydraulic load device 9 can be screwed onto the outside of the nut 3a during fastening. The fastening bolt 2 and the nuts 3a and 3b screwed to the fastening bolt 2 are formed so that the fastened bodies 1a and 1b can be fastened with a predetermined force. The taper on the outer surface of the inner taper bush 4i and the outer taper bush 4
The taper of the inner surface of o has the same inclination. The outer surface of the outer taper bush 4o is formed so as to fit into the through holes of the fastened bodies 1a and 1b as close as possible in a free state. There is a slight clearance between the inner surface of the inner taper bush 4i and the trunk of the fastening bolt 2 in a free state, and the inner diameter of the inner taper bush 4i is reduced by the fastening work, so that the fastening is completed in the fastening state. It is formed so as to lightly contact the bolt 2. The trunk of the fastening bolt 2 and each surface of the inner and outer tapered bushes 4i, 4o are also precisely finished.
【００１１】次に、図１に示すボルト締結構造の締結作
業について説明する。図１（Ａ）に示すように、被締結
体１ａ，１ｂの通し穴が直通するように心を合わせて被
締結体１ａ，１ｂの対向面を接合させ、被締結体１ａ，
１ｂの通し穴に締結ボルト２及び内外のテーパブッシュ
４ｉ，４ｏを挿入する。図示のように、内側テーパブッ
シュ４ｉの厚肉端を左方、外側テーパブッシュ４ｏの厚
肉端を右方として挿入したとすれば、外側テーパブッシ
ュ４ｏを受け止めるように通し穴の図の右方からブッシ
ュ受け止め具５を挿入し、内側テーパブッシュ４ｉに当
接させるように通し穴の図の左方からブッシュ負荷用具
６を挿入する。ブッシュ受け止め具５は内側テーパブッ
シュ４ｉに衝突せず、ブッシュ負荷用具６は外側テーパ
ブッシュ４ｏに衝突しないように形成されている。Next, a fastening operation of the bolt fastening structure shown in FIG. 1 will be described. As shown in FIG. 1 (A), the opposing surfaces of the fastened bodies 1a and 1b are joined so that the through holes of the fastened bodies 1a and 1b are directly connected, and the fastened bodies 1a and 1b are joined together.
The fastening bolt 2 and the inner and outer tapered bushes 4i, 4o are inserted into the through holes of 1b. As shown in the drawing, if the thick end of the inner taper bush 4i is inserted to the left and the thick end of the outer taper bush 4o is inserted to the right, the right side of the through hole to receive the outer taper bush 4o is shown. The bush receiving tool 5 is inserted from the above, and the bush loading tool 6 is inserted from the left side of the through hole in the drawing so as to abut against the inner tapered bush 4i. The bush receiving device 5 is formed so as not to collide with the inner taper bush 4i, and the bush loading device 6 is formed so as not to collide with the outer taper bush 4o.
【００１２】次に、図１（Ａ）に示すように、締結ボル
ト２の図の左端部のねじにナット３ｂをねじ込んでブッ
シュ負荷用具６の左端面に当接させる。締結ボルト２の
図の右端部のねじに油圧負荷装置９をねじ込んでブッシ
ュ受け止め具５の右端面に当接させる。次に、図示しな
い油圧源から油圧入口９ｄに接続されたホース等で供給
される油圧を油圧入口９ｄから油圧室９ｃ内に注入す
る。油圧室９ｃ内の油圧は、外側油圧部品９ｂを左方へ
押し、内側油圧部品９ａを右方へ押す。外側油圧部品９
ｂはブッシュ受け止め具５を押し、ブッシュ受け止め具
５は被締結体１ｂの端面に当たって位置が決まり、外側
テーパブッシュ４ｏを受け止めて外側テーパブッシュ４
ｏの位置決めをする。内側油圧部品９ａは締結ボルト２
を図の右方へ移動させるように力をかけ、締結ボルト２
はナット３ｂ及びブッシュ負荷用具６を介して内側テー
パブッシュ４ｉを図の右方へ移動させるように力をかけ
る。油圧負荷装置９が発揮する力の大きさは油圧を調節
して任意に設定することができる。Next, as shown in FIG. 1 (A), the nut 3b is screwed into the screw at the left end of the fastening bolt 2 in the figure, and brought into contact with the left end face of the bush loading tool 6. The hydraulic load device 9 is screwed into the screw at the right end portion of the fastening bolt 2 in the figure, and brought into contact with the right end surface of the bush receiving device 5. Next, the hydraulic pressure supplied from a hydraulic pressure source (not shown) through a hose or the like connected to the hydraulic pressure inlet 9d is injected from the hydraulic pressure inlet 9d into the hydraulic chamber 9c. The hydraulic pressure in the hydraulic chamber 9c pushes the outer hydraulic component 9b to the left and the inner hydraulic component 9a to the right. Outer hydraulic component 9
b presses the bush receiver 5, the bush receiver 5 contacts the end face of the fastened body 1b to determine its position, receives the outer taper bush 4o, and receives the outer taper bush 4
Position o. The inner hydraulic component 9a is the fastening bolt 2
Force to move the bolt to the right in the figure, and tighten the fastening bolt 2
Applies a force via the nut 3b and bush loading tool 6 to move the inner taper bush 4i to the right in the figure. The magnitude of the force exerted by the hydraulic load device 9 can be set arbitrarily by adjusting the hydraulic pressure.
【００１３】図１（Ａ）に示すように、油圧負荷装置９
の力により、ブッシュ受け止め具５で受け止められた外
側テーパブッシュ４ｏに対して内側テーパブッシュ４ｉ
が図の右方へ移動すると、内側テーパブッシュ４ｉと外
側テーパブッシュ４ｏとのテーパのくさび作用により、
外側テーパブッシュ４ｏの径は大きくなり、内側テーパ
ブッシュ４ｉの径は小さくなる。例えば、自由状態で、
外側テーパブッシュ４ｏの外面と被締結体１ａ，１ｂの
通し穴との間には殆ど隙間がないように形成し、内側テ
ーパブッシュ４ｉの内面と締結ボルト２との間にはある
程度の僅かな隙間があるように形成しておけば、上記の
ように油圧負荷装置９によって力をかけて、内側テーパ
ブッシュ４ｉと外側テーパブッシュ４ｏとのテーパのく
さび作用により、外側テーパブッシュ４ｏの径が大きく
なり、内側テーパブッシュ４ｉの径が小さくなったと
き、外側テーパブッシュ４ｏが所定の圧力で被締結体１
ａ，１ｂの通し穴に圧接し、内側テーパブッシュ４ｉは
締結ボルト２に接触するだけか小さい圧力で接するよう
にすることができる。このようにして被締結体１ａ，１
ｂの通し穴にテーパブッシュ４ｉ，４ｏを圧接させた固
定した後、油圧負荷装置９をねじ戻して外してブッシュ
受け止め具５を抜き取り、ナット３ｂをねじ戻して外し
てブッシュ負荷用具６を抜き取る。As shown in FIG. 1A, the hydraulic load device 9
Of the inner taper bush 4i with respect to the outer taper bush 4o received by the bush catcher 5,
Moves to the right in the figure, due to the tapered wedge action of the inner taper bush 4i and the outer taper bush 4o,
The outer taper bush 4o has a larger diameter, and the inner taper bush 4i has a smaller diameter. For example, in the free state,
The outer taper bush 4o is formed so that there is almost no gap between the outer surface of the outer taper bush 4o and the through holes of the fastened bodies 1a and 1b, and a slight gap is formed between the inner surface of the inner taper bush 4i and the fastening bolt 2. If it is formed so that the force is applied by the hydraulic load device 9 as described above, the diameter of the outer taper bush 4o is increased by the wedge action of the taper of the inner taper bush 4i and the outer taper bush 4o. , When the diameter of the inner taper bush 4i becomes smaller, the outer taper bush 4o is pressed with a predetermined pressure.
The inner taper bush 4i can be brought into pressure contact with the through holes of a and 1b so that the inner taper bush 4i only comes into contact with the fastening bolt 2 or with a small pressure. In this way, the fastened bodies 1a, 1
After the taper bushes 4i and 4o are pressed and fixed in the through holes of b, the hydraulic load device 9 is unscrewed and removed, and the bush receiving device 5 is pulled out, and the nut 3b is unscrewed and removed, and the bushing loading device 6 is pulled out.
【００１４】次に、図１（Ｂ）に示すように、締結ボル
ト２にナット３ａ，３ｂをねじ込んでそれぞれ被締結体
１ｂ及び被締結体１ａの端面に当接させる。ナット３ａ
の外側に負荷受け具７を置く。負荷受け具７の軸方向寸
法はナット３ａのそれより大きく形成されている。油圧
負荷装置９を締結ボルト２にねじ込んで負荷受け具７に
当接させる。油圧負荷装置９に前記のように油圧を注入
すれば、外側油圧部品９ｂは負荷受け具７を介して被締
結体１ｂに受け止められているので、内側油圧部品９ａ
は締結ボルト２を図の右方へ引っ張るように力をかけ
る。締結ボルト２はナット３ｂを介して被締結体１ａに
受け止められているので、張力により伸長するように弾
性変形する。締結ボルト２が伸長するとナット３ａが緩
むので、ナット３ａを増し締めして被締結体１ｂの端面
に当接させる。その後、油圧負荷装置９を緩めてねじ戻
して外し、負荷受け具７も外して締結が完了する。Next, as shown in FIG. 1B, the nuts 3a and 3b are screwed into the fastening bolts 2 and brought into contact with the fastened body 1b and the end faces of the fastened body 1a, respectively. Nut 3a
Place the load receiver 7 on the outside of the. The axial dimension of the load receiver 7 is larger than that of the nut 3a. The hydraulic load device 9 is screwed into the fastening bolt 2 and brought into contact with the load receiver 7. When the hydraulic pressure is injected into the hydraulic load device 9 as described above, the outer hydraulic component 9b is received by the fastened body 1b via the load receiver 7, so that the inner hydraulic component 9a.
Applies a force to pull the fastening bolt 2 to the right in the figure. Since the fastening bolt 2 is received by the fastened body 1a via the nut 3b, the fastening bolt 2 is elastically deformed so as to be elongated by the tension. When the fastening bolt 2 extends, the nut 3a loosens, so the nut 3a is tightened further and brought into contact with the end surface of the fastened body 1b. After that, the hydraulic load device 9 is loosened, screwed back and removed, and the load receiver 7 is also removed to complete the fastening.
【００１５】以上のようにして締結した結果、油圧負荷
装置９により締結ボルト２に付与された張力は、被締結
体１ａ，１ｂに当接したナット３ａ，３ｂによって保持
され、この締結ボルト２に内在する張力によりナット３
ａ，３ｂは被締結体１ａ，１ｂを押し付ける。前述のよ
うに内側テーパブッシュ４ｉと締結ボルト２との接触圧
力が零か小さくなるように形成しておけば、内側テーパ
ブッシュ４ｉと締結ボルト２との間の摩擦の問題はなく
なり、締結ボルト２の幹部にはテーパはないので、油圧
負荷装置９によって締結ボルト２に付与された力は、全
てナット３ａ，３ｂによって被締結体１ａ，１ｂを押し
付ける力になり、従来のもののような力の損失はない。As a result of the fastening as described above, the tension applied to the fastening bolt 2 by the hydraulic load device 9 is held by the nuts 3a and 3b that are in contact with the fastened bodies 1a and 1b. Nut 3 due to the internal tension
a and 3b press the fastened bodies 1a and 1b. If the contact pressure between the inner taper bush 4i and the fastening bolt 2 is formed to be zero or small as described above, the problem of friction between the inner taper bush 4i and the fastening bolt 2 is eliminated, and the fastening bolt 2 Since there is no taper in the trunk portion of the, the force applied to the fastening bolt 2 by the hydraulic load device 9 is all the force for pressing the fastened bodies 1a, 1b by the nuts 3a, 3b, resulting in loss of force like the conventional one. There is no.
【００１６】図１において、以上のように、外側テーパ
ブッシュ４ｏと内側テーパブッシュ４ｉとのテーパ作用
により、外側テーパブッシュ４ｏが被締結体１ａ，１ｂ
の通し穴に圧接し、締結ボルト２に付与された張力によ
りナット３ｂ，３ａが被締結体１ａ，１ｂを挾み付ける
ので、被締結体１ａと被締結体１ｂとが一体的に強力か
つ確実に締結される。In FIG. 1, as described above, the outer taper bush 4o is tapered by the outer taper bush 4o and the inner taper bush 4i so that the outer taper bush 4o is fastened to the fastened bodies 1a, 1b.
Since the nuts 3b, 3a pinch the fastened bodies 1a, 1b by the tension applied to the fastening bolts 2, the fastened body 1a and the fastened body 1b are integrally strong and secure. To be concluded.
【００１７】なお、内側テーパブッシュ４ｉは通常のテ
ーパ付き円筒状とし、外側テーパブッシュ４ｏは軸方向
に全通するスリットを切って径方向の弾性変形を容易に
するとか水平に切断して二つ割りにすれば、油圧負荷装
置９によって内側テーパブッシュ４ｉと外側テーパブッ
シュ４ｏとを押し付けて、外側テーパブッシュ４ｏの径
が大きくなり、内側テーパブッシュ４ｉの径が小さくな
ったとき、被締結体１ａ，１ｂの通し穴と外側テーパブ
ッシュ４ｏとの接触圧力を任意に大きくすることがで
き、かつ、締結ボルト２の外径と内側テーパブッシュ４
ｉの内径との仕上げ寸法を予め調整しておくことによ
り、締結ボルト２と内側テーパブッシュ４ｉとの接触圧
力を零又は所望の値に任意に設定することができる。The inner taper bush 4i is formed into a regular cylindrical shape with a taper, and the outer taper bush 4o is formed by cutting a slit that passes through in the axial direction so as to facilitate elastic deformation in the radial direction or cut horizontally into two parts. Then, when the inner taper bush 4i and the outer taper bush 4o are pressed by the hydraulic load device 9 to increase the diameter of the outer taper bush 4o and decrease the diameter of the inner taper bush 4i, the fastened bodies 1a and 1b are fastened. The contact pressure between the through hole and the outer taper bush 4o can be arbitrarily increased, and the outer diameter of the fastening bolt 2 and the inner taper bush 4o can be increased.
By adjusting the finishing dimension with the inner diameter of i in advance, the contact pressure between the fastening bolt 2 and the inner taper bush 4i can be arbitrarily set to zero or a desired value.
【００１８】[0018]
【発明の効果】以上のように、この発明によれば、テー
パブッシュを、内面がテーパとなっている外側のテーパ
ブッシュと外面がテーパとなっている内側のテーパブッ
シュとの組み合わせとし、締結ボルトはテーパのないボ
ルトとしたので、外側のテーパブッシュを両被締結体の
通し穴に圧接させ、かつ、締結ボルトとブッシュとの間
の摩擦の問題が解消して、締結ボルトに付与される引張
り力は殆ど全て両被締結体を締付ける力となり、両被締
結体は強力かつ確実に締結される。As described above, according to the present invention, the taper bush is a combination of the outer taper bush whose inner surface is tapered and the inner taper bush whose outer surface is tapered, and the fastening bolt Is a non-tapered bolt, so the outer taper bush is pressed into the through holes of both fastened bodies, and the problem of friction between the fastening bolt and the bush is eliminated, and the tension applied to the fastening bolt is eliminated. Almost all the force is a force for tightening both fastened bodies, and both fastened bodies are strongly and reliably fastened.
【図１】この発明によるボルト締結構造の実施の一形態
を示し、（Ａ）はテーパブッシュを装着中の状態を示す
縦断面図、（Ｂ）は締結ボルトに張力を付与してナット
を螺着中の状態を示す縦断面図である。1A and 1B show an embodiment of a bolt fastening structure according to the present invention, FIG. 1A is a vertical cross-sectional view showing a state where a taper bush is being mounted, and FIG. It is a longitudinal cross-sectional view showing a state during wearing.
【図２】従来のボルト締結構造を示し、（Ａ）はテーパ
ブッシュを装着中の状態を示す縦断面図、（Ｂ）は締結
ボルトに張力を付与してナットを螺着中の状態を示す縦
断面図である。2A and 2B show a conventional bolt fastening structure, FIG. 2A is a longitudinal sectional view showing a state where a taper bush is being mounted, and FIG. 2B is a state where a nut is being screwed by applying tension to the fastening bolt. FIG.
１ａ，１ｂ：被締結体、 ２：締結ボルト、 ３ａ，３ｂ：ナット、 ４ｏ：外側テーパブッシュ、 ４ｉ：内側テーパブッシュ、 ５：ブッシュ受け止め具、 ６：ブッシュ負荷用具、 ７：負荷受け具、 ９：油圧負荷装置。 1a, 1b: Object to be fastened, 2: Fastening bolt, 3a, 3b: Nut, 4o: Outer taper bush, 4i: Inner taper bush, 5: Bush receiving device, 6: Bush loading tool, 7: Load receiving device, 9 : Hydraulic load device.
Claims (2)
挿入したテーパブッシュを前記両被締結体の通し穴に圧
接させ、前記締結ボルトにナットをかけて前記両被締結
体を締結するボルト締結構造において、前記テーパブッ
シュは内面がテーパとなっている外側のテーパブッシュ
と外面がテーパとなっている内側のテーパブッシュとの
組み合わせとし、前記締結ボルトはテーパのないボルト
としたことを特徴とするボルト締結構造。1. A bolt for fastening a taper bush inserted into a through hole of both fastened bodies together with a fastening bolt into the through holes of both fastened bodies under pressure and fastening a nut to the fastening bolt to fasten the fastened bodies. In the fastening structure, the taper bush is a combination of an outer taper bush whose inner surface is tapered and an inner taper bush whose outer surface is tapered, and the fastening bolt is a non-tapered bolt. Bolt fastening structure.
挿入したテーパブッシュを前記両被締結体の通し穴に圧
接させ、前記締結ボルトにナットをかけて前記両被締結
体を締結するボルト締結構造において、前記テーパブッ
シュは内面がテーパとなっている外側のテーパブッシュ
と外面がテーパとなっている内側のテーパブッシュとの
組み合わせとし、前記締結ボルトはテーパのないボルト
とし、前記内外のテーパブッシュの一方を受け止めて他
方を油圧負荷装置により押し込むことによって外側のテ
ーパブッシュを前記両被締結体の通し穴に圧接させた
後、前記油圧負荷装置により前記締結ボルトに張力を付
与して前記締結ボルトにナットを螺着して前記両被締結
体を締結したことを特徴とするボルト締結構造。2. A bolt that presses a tapered bush inserted into the through holes of both fastened bodies together with fastening bolts into the through holes of the fastened bodies and nuts the fastening bolts to fasten the fastened bodies. In the fastening structure, the taper bush is a combination of an outer taper bush whose inner surface is tapered and an inner taper bush whose outer surface is tapered, and the fastening bolt is a non-tapered bolt. After one of the bushes is received and the other is pushed by a hydraulic load device to press the outer taper bush into the through holes of both the fastened bodies, tension is applied to the fastening bolt by the hydraulic load device and the fastening is performed. A bolt fastening structure characterized in that a nut is screwed to a bolt to fasten both the fastened bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8132540A JPH09296826A (en) | 1996-05-01 | 1996-05-01 | Bolt fastening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8132540A JPH09296826A (en) | 1996-05-01 | 1996-05-01 | Bolt fastening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09296826A true JPH09296826A (en) | 1997-11-18 |
Family
ID=15083675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8132540A Withdrawn JPH09296826A (en) | 1996-05-01 | 1996-05-01 | Bolt fastening structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09296826A (en) |
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| JP2013018052A (en) * | 2011-06-15 | 2013-01-31 | Kayo Watanabe | Water passing mechanism, method of manufacturing the same, and bush device |
| JP2015036586A (en) * | 2013-08-15 | 2015-02-23 | アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ | Shaft coupling assembly and method for coupling shafts |
| CN104487722A (en) * | 2012-08-06 | 2015-04-01 | 三菱重工业株式会社 | Jig for rotor connection of a rotary machine, and rotor connection method |
| JP2015515583A (en) * | 2012-03-06 | 2015-05-28 | テクノファースト インダストリーズ プロプライエタリー リミテッドＴｅｃｈｎｏｆａｓｔ Ｉｎｄｕｓｔｒｉｅｓ Ｐｔｙ Ｌｔｄ | Large capacity radial fit coupling bolt assembly, large capacity expansion sleeve bolt assembly or method of securing at least two parts |
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| DE102018118779B4 (en) | 2018-08-02 | 2023-03-02 | Nord-Lock Switzerland Gmbh | Device and method for connecting two components with radial and axial adhesion |
-
1996
- 1996-05-01 JP JP8132540A patent/JPH09296826A/en not_active Withdrawn
Cited By (12)
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|---|---|---|---|---|
| JP2013018052A (en) * | 2011-06-15 | 2013-01-31 | Kayo Watanabe | Water passing mechanism, method of manufacturing the same, and bush device |
| CN103561886A (en) * | 2011-06-15 | 2014-02-05 | 渡边佳代 | Bushing device, water conduction mechanism, and production method therefor |
| US9452471B2 (en) | 2011-06-15 | 2016-09-27 | Kayo Watanabe | Bushing device, water-communicating mechanism and a method of making the water-communicating mechanism |
| US10155264B2 (en) | 2011-06-15 | 2018-12-18 | Kayo Watanabe | Water-communicating mechanism |
| JP2015515583A (en) * | 2012-03-06 | 2015-05-28 | テクノファースト インダストリーズ プロプライエタリー リミテッドＴｅｃｈｎｏｆａｓｔ Ｉｎｄｕｓｔｒｉｅｓ Ｐｔｙ Ｌｔｄ | Large capacity radial fit coupling bolt assembly, large capacity expansion sleeve bolt assembly or method of securing at least two parts |
| CN104487722A (en) * | 2012-08-06 | 2015-04-01 | 三菱重工业株式会社 | Jig for rotor connection of a rotary machine, and rotor connection method |
| US9194234B2 (en) | 2012-08-06 | 2015-11-24 | Mitsubishi Heavy Industries, Ltd. | Fixture for connecting rotors of rotary machine and method of connecting rotors |
| JP2015036586A (en) * | 2013-08-15 | 2015-02-23 | アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ | Shaft coupling assembly and method for coupling shafts |
| CN104373469A (en) * | 2013-08-15 | 2015-02-25 | 阿尔斯通技术有限公司 | Shaft coupling assembly and method for coupling shafts |
| US9664235B2 (en) | 2013-08-15 | 2017-05-30 | Ansaldo Energia Switzerland AG | Shaft coupling assembly and method for coupling shafts |
| CN107989873A (en) * | 2016-10-26 | 2018-05-04 | 斯凯孚公司 | The method for dismounting of bolt device, coupling arrangement and coupling arrangement |
| DE102018118779B4 (en) | 2018-08-02 | 2023-03-02 | Nord-Lock Switzerland Gmbh | Device and method for connecting two components with radial and axial adhesion |
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