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JPH11229557A - Connecting device for threaded bar - Google Patents

Connecting device for threaded bar

Info

Publication number
JPH11229557A
JPH11229557AJP5297498AJP5297498AJPH11229557AJP H11229557 AJPH11229557 AJP H11229557AJP 5297498 AJP5297498 AJP 5297498AJP 5297498 AJP5297498 AJP 5297498AJP H11229557 AJPH11229557 AJP H11229557A
Authority
JP
Japan
Prior art keywords
screw
thread
fine
threaded
coupler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5297498A
Other languages
Japanese (ja)
Inventor
Toshiharu Mori
敏治 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Tekko Co Ltd
Original Assignee
Tokyo Tekko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Tekko Co LtdfiledCriticalTokyo Tekko Co Ltd
Priority to JP5297498ApriorityCriticalpatent/JPH11229557A/en
Publication of JPH11229557ApublicationCriticalpatent/JPH11229557A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PROBLEM TO BE SOLVED: To connect two threaded bars even if there is a difference in a pitch, and to realize the metal touch with couplers. SOLUTION: A connecting device 5 has a first coupler 10 and a second coupler 20. The couplers 10, 20 have the main screw parts 11, 21 having the same pitch as threaded bars 1L, 1R and the fine screw parts 12, 22 having a pitch smaller than these. The fine screw parts 12, 22 form a multiple thread, and the lead L is slightly larger than a pitch Pa of the threaded bars 1L, 1R. The threaded bars 1L, 1R are connected by threadedly engaging the mutual fine screw parts 12, 22 by threadedly engaging the main screw parts 12, 22 with the threaded bars 1L, 1R. Then, when threaded engagement of the fine screw parts 12, 22 makes progress, the main screw parts 12, 22 are put in a metal touch state by striking on a screw thread 2 of the threaded bars 1L, 1R.

Description

Translated fromJapanese
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、2本のねじ鉄筋を
一直線をなして連結する装置に関し、特にプレキャスト
コンクリート構造体のねじ鉄筋同士を連結するのに好適
な装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for connecting two screw reinforcing bars in a straight line, and more particularly to a device suitable for connecting screw reinforcing bars of a precast concrete structure.

【0002】[0002]

【従来の技術】近年、外周面にねじ山を形成してなる鉄
筋、すなわちねじ鉄筋が多く用いられるようになってき
ている。ねじ鉄筋同士の連結には、内周にねじ鉄筋のね
じ山と同一ピッチの雌ねじを有する1個のカプラーを用
いるのが一般的である。すなわち、カプラーを一方のね
じ鉄筋に螺合させておき、ねじ鉄筋同士を一直線上に配
置させた状態で、カプラーを回して他方のねじ鉄筋にも
約半分の長さだけ螺合させることにより、ねじ鉄筋を連
結するのである。
2. Description of the Related Art In recent years, rebars having a thread formed on the outer peripheral surface, that is, threaded rebars, have been increasingly used. In order to connect the screw rebars, it is common to use one coupler having an internal thread with the same pitch as the thread of the screw rebar on the inner periphery. That is, the coupler is screwed into one screw reinforcing bar, and in a state where the screw reinforcing bars are arranged in a straight line, by turning the coupler and screwing into the other screw reinforcing bar by about half the length, It connects the screw rebars.

【0003】上記連結方法では、2本のねじ鉄筋へのカ
プラーの螺合に先立って、いずれか一方のねじ鉄筋を回
したり、ねじ鉄筋の間隔を調節する等の手段により、ね
じ鉄筋のピッチを合わせる必要がある。しかし、例えば
プレキャストコンクリート構造体の連結に際して、これ
ら構造体のねじ鉄筋同士を連結する場合のように、ピッ
チ合わせができないか、困難なことがある。このような
場合には、例えば、特開昭58−204259号公報に
開示された連結装置が用いられる。
[0003] In the above connection method, prior to screwing the coupler into the two threaded rebars, the pitch of the threaded rebar is adjusted by turning one of the threaded rebars or adjusting the interval between the threaded rebars. Need to match. However, for example, when connecting precast concrete structures, pitch adjustment may not be possible or difficult as in the case of connecting threaded reinforcing bars of these structures. In such a case, for example, a connecting device disclosed in Japanese Patent Application Laid-Open No. 58-204259 is used.

【0004】上記公報の連結装置は、第1,第2のカプ
ラーを備えている。これらカプラーは、ねじ鉄筋と同一
ピッチの雌ねじからなる主ねじ部と、これよりピッチの
小さい多条の微細ねじ部とをそれぞれ有している。第1
カプラーの微細ねじ部は雌ねじをなし、第2カプラーの
微細ねじ部は雄ねじをなしている。上記第1,第2カプ
ラーの主ねじ部を、一直線上に配置された2本のねじ鉄
筋に螺合させ、この状態で、第1,第2カプラーの微細
ねじ部を互いに螺合させることにより、2本のねじ鉄筋
を連結する。
[0004] The connecting device disclosed in the above publication includes first and second couplers. Each of these couplers has a main thread portion made of a female thread having the same pitch as the threaded reinforcing bar, and a multi-threaded fine thread portion having a smaller pitch. First
The fine thread portion of the coupler has a female thread, and the fine thread portion of the second coupler has a male thread. By screwing the main screw portions of the first and second couplers to two screw rebars arranged in a straight line, and in this state, screwing the fine screw portions of the first and second couplers together. Connect the two threaded bars.

【0005】上記公報の連結装置は、主ねじ部とねじ鉄
筋の間のガタ(螺合状態での相対的移動可能な軸方向距
離)の存在を利用し、ねじ鉄筋間にピッチずれがあって
も連結を可能にしている。すなわち、第1,第2カプラ
ーの微細ねじ部のピッチを、主ねじ部とねじ鉄筋の間の
ガタより小さくすることにより、これら微細ねじ部同士
の螺合の開始を確保している。しかも、これら微細ねじ
部を多条ねじにするとともに、そのリードをねじ鉄筋の
ピッチと等しくすることにより、上記微細ねじ部同士の
螺合を、主ねじ部とねじ鉄筋の螺合とともに進めること
ができる。
[0005] The connecting device disclosed in the above-mentioned publication utilizes the existence of play (an axially movable distance in a screwed state) between the main screw portion and the screw rebar, and there is a pitch shift between the screw rebars. Also allows for concatenation. That is, by setting the pitch of the fine screw portions of the first and second couplers smaller than the play between the main screw portion and the screw rebar, the start of screwing of these fine screw portions is ensured. Moreover, by making these fine screw portions multi-threaded and making the leads equal to the pitch of the screw rebar, the screwing of the fine screw portions can be advanced together with the screwing of the main screw portion and the screw rebar. it can.

【0006】[0006]

【発明が解決しようとする課題】上記公報の連結装置で
は、第1,第2のカプラーの微細ねじ部のリードがねじ
鉄筋のピッチと等しいため、微細ねじ部同士の螺合を進
めても、カプラーの主ねじ部のねじ山とねじ鉄筋のねじ
山との間の遊びを解消できず、両者をメタルタッチにす
ることができない。そのため、2本のねじ鉄筋は、第
1,第2のカプラーとのメタルタッチを介して、互いに
離れる方向の引っ張り力に耐える役割を十分に担うこと
ができない。また、カプラーとねじ鉄筋との間の遊びに
グラウトが介在される場合には、このグラウトを介し
て、ねじ鉄筋は引っ張り力を担うことになるが、グラウ
トが圧縮され連結強度の低下を招くことになる。
In the connecting device disclosed in the above publication, since the lead of the fine screw portion of the first and second couplers is equal to the pitch of the screw rebar, even if the screwing of the fine screw portions is advanced, The play between the screw thread of the main screw part of the coupler and the screw thread of the screw rebar cannot be eliminated, and both cannot be metal touched. Therefore, the two screw rebars cannot sufficiently fulfill the role of withstanding the pulling force in the direction away from each other via the metal touch with the first and second couplers. In addition, when grout is interposed in the play between the coupler and the screw rebar, the screw rebar bears a tensile force through this grout, but the grout is compressed and the connection strength is reduced. become.

【0007】[0007]

【課題を解決するための手段】請求項1の発明は、第
1,第2のカプラーを備え、これらカプラーが、ねじ鉄
筋と同一ピッチの雌ねじからなる主ねじ部と、これより
ピッチの小さい多条の微細ねじ部とをそれぞれ有し、第
1カプラーの微細ねじ部が雌ねじをなし、第2カプラー
の微細ねじ部が雄ねじをなし、上記第1,第2カプラー
の主ねじ部を、2本のねじ鉄筋にそれぞれ螺合させた状
態で、第1,第2カプラーの微細ねじ部を互いに螺合さ
せることにより、2本のねじ鉄筋を連結する装置におい
て、上記微細ねじ部のリードをねじ鉄筋のピッチより大
きくしたことを特徴とする。請求項2の発明は、請求項
1に記載のねじ鉄筋用連結装置において、上記ねじ鉄筋
のピッチをPaとし、上記主ねじ部とねじ鉄筋との間の
軸方向のガタをGとし,上記微細ねじ部のねじ条数をK
とし、上記微細ねじ部のリードをLとした時、下記の式
が成立することを特徴とする。 Pa/K<2G Pa<L<Pa(1−1/K)+2G 請求項3の発明は、請求項2に記載のねじ鉄筋用連結装
置において、さらに次式が成立することを特徴とする。 Pa/K<G
According to the first aspect of the present invention, there are provided first and second couplers, each of which comprises a main thread portion formed of a female thread having the same pitch as a threaded rebar, and a multiple thread having a smaller pitch than the main thread portion. And the fine thread of the first coupler forms a female thread, the fine thread of the second coupler forms a male thread, and two main threads of the first and second couplers. In a device for connecting two threaded rebars by screwing the fine threaded portions of the first and second couplers in a state of being screwed to the threaded rebars, respectively, the lead of the fine threaded portion is connected to the threaded rebar. The pitch is greater than the pitch of According to a second aspect of the present invention, in the coupling device for a threaded bar according to the first aspect, the pitch of the threaded bar is Pa, the play in the axial direction between the main thread portion and the threaded bar is G, Set the number of threads on the thread to K
When the lead of the fine screw portion is L, the following formula is established. Pa / K <2G Pa <L <Pa (1-1 / K) + 2G According to a third aspect of the present invention, in the connection device for a screw reinforcing bar according to the second aspect, the following expression is further satisfied. Pa / K <G

【0008】[0008]

【発明の実施の形態】以下、本発明の一実施形態につい
て図面を参照して説明する。図1に示すように、連結装
置5は、2本のねじ鉄筋1L,1Rを連結するために用
いられる。ねじ鉄筋1L,1Rは、ピッチPaのねじ山
2を有している。なお、ねじ山2は1条であるので、そ
のリードはピッチPaと等しい。ねじ鉄筋1L,1R
は、それぞれ異なるプレキャストコンクリート構造体に
組み込まれている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the connection device 5 is used for connecting two screw reinforcing bars 1L and 1R. The threaded rebars 1L and 1R have threads 2 with a pitch Pa. Since the number of threads 2 is one, the lead is equal to the pitch Pa. Screw rebar 1L, 1R
Are incorporated in different precast concrete structures.

【0009】上記連結装置5は、筒形状をなす第1カプ
ラー10と第2カプラー20を備えている。第1カプラ
ー10において、長さ方向の約半分(図中左半分)の内
周には、雌ねじをなす主ねじ部11が形成されている。
第1カプラー10の他の半分(図中右半分)の内径は上
記主ねじ部11より大きく、その内周には雌ねじをなす
微細ねじ部12が形成されている。第1カプラー10の
外周は、断面六角形状をなし、スパナ等の工具を掛ける
工具掛け部13となっている。
The connecting device 5 includes a first coupler 10 and a second coupler 20 each having a tubular shape. In the first coupler 10, a main screw portion 11 that forms a female screw is formed on the inner circumference of about half (the left half in the figure) in the length direction.
The inside diameter of the other half (the right half in the figure) of the first coupler 10 is larger than that of the main screw portion 11, and a fine screw portion 12 forming a female screw is formed on the inner periphery thereof. The outer periphery of the first coupler 10 has a hexagonal cross section and serves as a tool hook 13 for hooking a tool such as a spanner.

【0010】上記第2カプラー20の内周には全長にわ
たって、雌ねじをなす主ねじ部21が形成されている。
また、中間部外周には雄ねじをなす微細ねじ部22が形
成されている。第2カプラー20の一端(図中右端)に
は、断面六角形状をなす工具掛け部23が形成されてい
る。
A main screw portion 21 forming a female screw is formed on the inner periphery of the second coupler 20 over the entire length.
Further, a fine screw portion 22 forming an external thread is formed on the outer periphery of the intermediate portion. A tool hook 23 having a hexagonal cross section is formed at one end (right end in the figure) of the second coupler 20.

【0011】上記カプラー10,20の主ねじ部11,
21は、上記ねじ鉄筋1L,1Rのねじ山2と同一のピ
ッチPaを有して、ねじ鉄筋1L,1Rに螺合されるよ
うになっており、その螺合状態で、軸方向のガタGがあ
る。
The main screw portions 11 of the couplers 10 and 20,
The screw 21 has the same pitch Pa as the thread 2 of the screw rebars 1L, 1R, and is screwed to the screw rebars 1L, 1R. There is.

【0012】上記微細ねじ部12,22は互いに螺合す
るものであり、この微細ねじ部12,22は、多条ねじ
をなしている。図2,図3に示すように、上記微細ねじ
部12,22は、ねじ条数Kに相当する数のねじ切り口
12x,22xを有している。ねじ切り口12x,22
xは、それぞれ周方向に等間隔をなして離れている。微
細ねじ部12,22は、ねじ切り口12x,22xが一
致した時に螺合開始が可能になる。
The fine screw portions 12 and 22 are screwed to each other, and the fine screw portions 12 and 22 are multi-threaded. As shown in FIGS. 2 and 3, the fine threaded portions 12 and 22 have a number of thread cuts 12x and 22x corresponding to the number of threads K. Screw cut 12x, 22
x are spaced apart at equal intervals in the circumferential direction. The fine screw portions 12, 22 can start screwing when the screw cuts 12x, 22x match.

【0013】上記微細ねじ部12,22のねじ条数をK
とし、ピッチをPbとした時、そのリードLは、K・P
bで表される。微細ねじ部12,22のピッチPbは、
ねじ鉄筋1L,1Rのねじ山2のピッチPaより小さ
い。また、リードLは、ねじ鉄筋1L,1RのピッチP
aより若干大きくなっている。より詳しい寸法条件につ
いては、後述する。
The number of threads of the fine thread portions 12 and 22 is K
And when the pitch is Pb, the lead L is K · P
It is represented by b. The pitch Pb of the fine thread portions 12, 22 is
The pitch is smaller than the pitch Pa of the thread 2 of the threaded rebar 1L, 1R. Also, the lead L has a pitch P of the screw reinforcing bars 1L and 1R.
It is slightly larger than a. More detailed dimensional conditions will be described later.

【0014】上記構成をなす連結装置の作用を説明す
る。まず、図4(A)に示すように、カプラー10,2
0の主ねじ部11,21を、ねじ鉄筋1L,1Rに螺合
させ、カプラー10,20をねじ鉄筋1L,1Rの端か
ら後退させておく。次に、プレキャストコンクリート構
造体を、ねじ鉄筋1L,1Rが一直線上になるととも
に、その端が互いに近づくように、設置する。なお、こ
の設置状態において、これらねじ鉄筋1L,1Rは軸方
向移動も回動もできないため、ピッチずれが生じてい
る。次に、図4(B)に示すように、ねじ鉄筋1Lに螺
合された第1カプラー10を回して前進させ、主ねじ部
11の端とねじ鉄筋1Lの端をほぼ一致させる。
The operation of the connecting device having the above configuration will be described. First, as shown in FIG.
The main screw portions 11 and 21 of 0 are screwed into the screw rebars 1L and 1R, and the couplers 10 and 20 are retracted from the ends of the screw rebars 1L and 1R. Next, the precast concrete structure is installed so that the screw rebars 1L and 1R are aligned, and their ends are close to each other. In this installation state, the screw rebars 1L and 1R cannot move or rotate in the axial direction, so that a pitch shift occurs. Next, as shown in FIG. 4 (B), the first coupler 10 screwed into the screw reinforcing bar 1L is rotated and moved forward to make the end of the main screw portion 11 and the end of the screw reinforcing bar 1L substantially coincide with each other.

【0015】次に、ねじ鉄筋1Rに螺合された第2カプ
ラー20を回し、第1カプラー10に向かって前進させ
る。やがて第2カプラー20の微細ねじ部22の左端が
第1カプラー10の微細ねじ部12の右端に当たる。次
に、上記微細ねじ部12,22のねじ切り口12x,2
2xが一致するように、カプラー10,20の一方を他
方に対して角度調節する。次に、第2カプラー20を回
して、微細ねじ部12,22の螺合を進め、図4(C)
に示すような螺合状態を得る。
Next, the second coupler 20 screwed to the screw reinforcing bar 1R is turned to advance toward the first coupler 10. Eventually, the left end of the fine screw portion 22 of the second coupler 20 will correspond to the right end of the fine screw portion 12 of the first coupler 10. Next, the thread cuts 12x, 2 of the fine thread portions 12, 22 are formed.
One of the couplers 10, 20 is angle adjusted with respect to the other so that 2x coincides. Next, by turning the second coupler 20, the screwing of the fine screw portions 12, 22 is advanced, and FIG.
To obtain the screwed state shown in FIG.

【0016】上述したカプラー10,20の角度調節に
ついて詳述する。ねじ切り口12x,22xを一致させ
るためには、カプラー10,20は、最大で360°/
K(Kは前述したように微細ねじ部の条数である)の角
度、すなわち(1/K)回の相対回動を必要とする。こ
の相対回動は、主ねじ部11,21のねじ山11a,2
1aの相対的な軸方向移動を伴う。移動量は最大でPa
/Kである。したがって、いかなる場合でも微細ねじ部
12,22が螺合を開始できるための条件は、この最大
移動量Pa/Kが、カプラー10,20のねじ鉄筋1
R,1Lに対する最大遊び量、すなわちガタGの2倍よ
り小さいことである。この条件を式で表すと下記のよう
になる。 Pa/K<2G ・・・(1)
The angle adjustment of the couplers 10 and 20 will be described in detail. In order to match the thread cuts 12x, 22x, the couplers 10, 20 must have a maximum of 360 ° /
It requires an angle of K (K is the number of fine thread portions as described above), that is, (1 / K) relative rotations. This relative rotation is caused by the thread 11a, 2 of the main thread portion 11, 21.
1a with relative axial movement. Movement amount is Pa at the maximum
/ K. Therefore, in any case, the conditions under which the fine screw portions 12 and 22 can start screwing are that the maximum movement amount Pa / K is equal to the screw rebar 1 of the couplers 10 and 20.
The maximum play amount for R and 1L, that is, smaller than twice the play G. This condition is represented by the following equation. Pa / K <2G (1)

【0017】本実施形態では、微細ねじ部12,22の
リードLを、ねじ鉄筋1L,1RのピッチPa、すなわ
ち主ねじ部11,21のピッチより若干大きくしたの
で、カプラー10,20の微細ねじ部12,22同士の
螺合が進むにしたがって、主ねじ部11,12のねじ山
11a,21a同士が徐々に近づく。その結果、図1に
示すように、第1カプラー10の主ねじ部11のねじ山
11aの右側面が、ねじ鉄筋1Lのねじ山2の左側面に
当たり、第2カプラー20の主ねじ部21のねじ山21
aの左側面がねじ鉄筋1Rのねじ山2の右側面に当たっ
た状態、すなわちメタルタッチが得られる。さらに両者
にトルクをかけて締め付けることにより、これらねじ山
2,11a間のメタルタッチおよびねじ山2,21a間
のメタルタッチを介して,ねじ鉄筋1L,1Rを互いに
近づくように引っ張った状態が得られる。
In the present embodiment, the lead L of the fine screw portions 12 and 22 is slightly larger than the pitch Pa of the screw rebars 1L and 1R, that is, the pitch of the main screw portions 11 and 21. As the screwing of the portions 12 and 22 progresses, the threads 11a and 21a of the main screw portions 11 and 12 gradually approach each other. As a result, as shown in FIG. 1, the right side surface of the thread 11 a of the main thread portion 11 of the first coupler 10 hits the left side surface of the thread 2 of the threaded reinforcing bar 1 </ b> L and the main thread portion 21 of the second coupler 20. Thread 21
The state where the left side surface of a is in contact with the right side surface of the thread 2 of the screw reinforcing bar 1R, that is, a metal touch is obtained. Further, by tightening both with a torque, a state is obtained in which the screw rebars 1L and 1R are pulled closer to each other via the metal touch between the screw threads 2 and 11a and the metal touch between the screw threads 2 and 21a. Can be

【0018】上記メタルタッチに至るまでの螺合作用に
ついて詳述する。主ねじ部11のねじ山11aとねじ鉄
筋1Lのねじ山2との間の遊び(メタルタッチになるま
での軸方向移動量に)と、主ねじ部21のねじ山21a
とねじ鉄筋1Rのねじ山2との間の遊びの合計は、上記
微細ねじ部12,22が相対的に1回転する毎に、微細
ねじ部12,22のリードLとねじ鉄筋1L,1Rのピ
ッチPaとの差(以下リード差Dと称す)だけ減じられ
る。したがって、螺合始めの時の合計遊びをTとした
時、螺合開始からメタルタッチに至るまでのカプラー1
0,20の相対的回転数Nは次式で表される。 N=T/D ・・・(2)
The screwing operation up to the metal touch will be described in detail. The play between the screw thread 11a of the main screw portion 11 and the screw thread 2 of the screw reinforcing bar 1L (in the amount of axial movement until the metal touch occurs) and the screw thread 21a of the main screw portion 21
The total of the play between the screw L and the thread 2 of the screw rebar 1R is such that the lead L of the fine screw 12 and 22 and the screw rebar 1L and 1R each time the fine screw 12 and 22 make one relative rotation. The difference from the pitch Pa (hereinafter referred to as a lead difference D) is reduced. Therefore, when the total play at the beginning of the screwing is T, the coupler 1 from the start of the screwing to the metal touch
The relative rotational speed N of 0 and 20 is represented by the following equation. N = T / D (2)

【0019】ところで、上記合計遊びTは最大限ガタG
の2倍であるが、前述したように、ねじ切り口12x,
22xを一致させて螺合開始可能とするためにカプラー
10,20の相対的回動を余儀なくされるので、螺合開
始時点での合計遊びPは、最大でPa/Kだけ減じられ
る。換言すれば、螺合開始時点で保証される合計遊びT
は、次式で表される。 T=2G−Pa/K ・・・(3) 上記式(3)を式(2)に代入すると、次式が得られ
る。 N=(2G−Pa/K)/D ・・・(4)
By the way, the total play T is maximum play G
However, as described above, the thread cuts 12x,
Since the relative rotation of the couplers 10 and 20 is forced to make the screwing start possible by matching the 22x, the total play P at the start of the screwing is reduced by Pa / K at the maximum. In other words, the total play T guaranteed at the start of the screw engagement
Is represented by the following equation. T = 2G−Pa / K (3) When the above equation (3) is substituted into the equation (2), the following equation is obtained. N = (2G-Pa / K) / D (4)

【0020】ここで、カプラー10,20の螺合強度を
確保するために、螺合回転数は最低1回転必要であるの
で、上記式(4)から次式の寸法条件が得られる。 1<(2G−Pa/K)/D ・・・(5) 前述したように、D=L−Paであるから、(5)は次
式のように書き換えられる。 L<Pa(1−1/K)+2G ・・・(6) なお、螺合強度をより一層高めるためには、螺合回転数
は2回転以上が好ましく、この場合には、次式の寸法条
件が必要となる。 L<Pa(1−1/2K)+G ・・・(7)
Here, in order to secure the screwing strength of the couplers 10 and 20, the screwing rotation speed is required to be at least one rotation. Therefore, the following dimensional condition is obtained from the above equation (4). 1 <(2G−Pa / K) / D (5) As described above, since D = L−Pa, (5) can be rewritten as the following equation. L <Pa (1-1 / K) + 2G (6) In order to further increase the screwing strength, the screwing rotation speed is preferably 2 or more. In this case, the dimension of the following formula is used. Conditions are required. L <Pa (1-1 / 2K) + G (7)

【0021】次に、カプラー10,20の具体的な螺合
方法について説明する。この螺合方法では、螺合開始時
における合計遊びTをできるだけ大きくして、螺合回転
数を大きくすることが要求される。また、螺合開始の際
の角度調節を容易にすることも要求される。
Next, a specific method of screwing the couplers 10 and 20 will be described. In this screwing method, it is necessary to increase the total play T at the start of screwing as much as possible to increase the screwing rotation speed. It is also required that the angle adjustment at the start of screwing be facilitated.

【0022】図4(B)に示すカプラー10,20の螺
合開始直前において、カプラー10,20を回さずに互
いに離す方向に軸に沿って移動させる。これにより、図
5(A)に示すように、第1カプラー10の主ねじ部1
1のねじ山11aの左側面がねじ鉄筋1Lのねじ山2の
右側面とが当たり、ねじ山11aの右側面とねじ山2の
左側面との間に、ガタGに相当する遊びが生じる。同様
に、第2カプラー20の主ねじ部21のねじ山21aの
右側面がねじ鉄筋1Rのねじ山2の左側面に当たり、ね
じ山21aの左側面とねじ山2の右側面との間にも、ガ
タGに相当する遊びが生じる。
Immediately before the start of the screwing of the couplers 10, 20 shown in FIG. 4B, the couplers 10, 20 are moved along the axis in a direction away from each other without turning. Thereby, as shown in FIG. 5 (A), the main screw portion 1 of the first coupler 10 is formed.
The left side of the thread 11a contacts the right side of the thread 2 of the screw reinforcing bar 1L, and a play corresponding to the play G occurs between the right side of the thread 11a and the left side of the thread 2. Similarly, the right side surface of the thread 21a of the main thread portion 21 of the second coupler 20 corresponds to the left side surface of the thread 2 of the threaded rebar 1R, and also between the left side surface of the thread 21a and the right side surface of the thread 2. A play corresponding to the play G occurs.

【0023】次に、第2カプラー20を、上記ねじ山2
1a,2の当たりを維持したまま回すと、やがてカプラ
ー10,20の微細ねじ部12,22の端同士が当た
る。この際、微細ねじ部12,22のねじ切り口12
x,22xの位置は一致するとは限らず、この最初の当
たり状態では螺合を開始することができない。そこで、
微細ねじ部12,22の端を当接させたまま第2カプラ
ー20を押しながら360°/Kだけ逆方向(左回り方
向)に回し、それから最初の角度位置に向かって右回り
方向に回す。すると、最初の角度位置に達する前に、ね
じ切り口12x,22xが一致し、螺合開始が可能とな
る。第2カプラー20の軸方向移動は第1カプラー10
に阻止されているため、第2カプラー20が上記最初の
角度位置から360°/K左回りに回動された時に、ね
じ山21aは、ねじ鉄筋1Rのねじ山2から離れて左方
向にPa/Kだけ前進し、それから螺合開始位置まで右
回りに回動された時にその回動角度に対応して後退す
る。この角度調節により、結果として、第2カプラー2
0は最初の角度位置から螺合開始位置まで右回りに回動
することになり、ねじ山21aはねじ山2から図5
(B)においてSで示す距離だけ前進することになる。
この距離Sは0〜Pa/Kの範囲にある。
Next, the second coupler 20 is connected to the thread 2
When turning while maintaining the contact of 1a and 2, the ends of the fine threaded portions 12 and 22 of the couplers 10 and 20 eventually come into contact with each other. At this time, the thread cuts 12 of the fine thread portions 12 and 22
The positions of x and 22x do not always match, and screwing cannot be started in this first contact state. Therefore,
The second coupler 20 is turned 360 ° / K in the opposite direction (counterclockwise) while pressing the ends of the fine threaded portions 12 and 22 in contact with each other, and then counterclockwise toward the first angular position. Then, before reaching the first angular position, the threaded cuts 12x and 22x coincide, and the screwing can be started. The axial movement of the second coupler 20 is the same as that of the first coupler 10.
When the second coupler 20 is rotated 360 ° / K counterclockwise from the initial angular position, the screw thread 21a separates from the screw thread 2 of the screw reinforcing bar 1R and moves leftward by Pa. / K, and when it is turned clockwise to the screwing start position, it moves backward in accordance with the turning angle. This angle adjustment results in the second coupler 2
0 turns clockwise from the initial angular position to the screwing start position, and the thread 21a is
In (B), the vehicle advances by the distance indicated by S.
This distance S is in the range of 0 to Pa / K.

【0024】なお、上述したように、第2カプラー20
を360°/K逆回りに回動させると、ねじ山21aが
距離Pa/Kだけ前進するので、第1カプラー10のね
じ山11aをねじ鉄筋1Lのねじ山2を当てたまま、第
2カプラー20の角度調節を行うためには、この前進距
離Pa/KをガタGより小さくする必要がある。すなわ
ち、下記の寸法条件が必要となる。 Pa/K<G ・・・(8)
As described above, the second coupler 20
Is rotated in the reverse direction by 360 ° / K, the screw thread 21a moves forward by the distance Pa / K. Therefore, the screw thread 11a of the first coupler 10 is kept in contact with the screw thread 2 of the screw reinforcing bar 1L, and the second coupler is rotated. In order to perform the angle adjustment of 20, the forward distance Pa / K needs to be smaller than the play G. That is, the following dimensional conditions are required. Pa / K <G (8)

【0025】上記角度調節後、第2カプラー20を回し
て螺合を進めると、図5(B)の状態から、図1,図5
(C)に示すメタルタッチ状態になるが、そのために要
するカプラー10の回転数Nを求める。上記メタルタッ
チにするには、ねじ山2に対するねじ山11a,21a
の軸方向移動量の合計が、2G−Sだけ必要である。こ
こでSは0〜Pa/Kであるから、必要移動量は、(2
GーPa/K)〜2Gの範囲となる。したがって、メタ
ルタッチまでの両カプラー10,20の相対的回転数N
は、次式で表すことができる。 (2G−Pa/K)/D<N<2G/D ・・・(9)
After the above angle adjustment, when the second coupler 20 is turned to advance the screw engagement, the state shown in FIG.
The metal touch state shown in (C) is reached. The number of rotations N of the coupler 10 required for that is obtained. To make the metal touch, the threads 11a and 21a for the thread 2 are required.
, A total of 2 G-S is required. Here, since S is 0 to Pa / K, the necessary movement amount is (2
G-Pa / K) to 2G. Therefore, the relative rotation speed N of both couplers 10 and 20 up to the metal touch
Can be expressed by the following equation. (2G-Pa / K) / D <N <2G / D (9)

【0026】上記の螺合方法では、カプラー10,20
同士の相対螺合回転数をできるだけ多くするという観点
では理想的であるが、螺合開始のために第2カプラー2
0を一旦逆回りにする必要がある。そこで、次の螺合方
法も有力である。図4(B)に示すカプラー10,20
の螺合開始直前において、カプラー10,20を回さず
に軸に沿って左方向に移動させる。これにより、図6
(A)に示すように、第1カプラー10の主ねじ部11
のねじ山11aの左側面がねじ鉄筋1Lのねじ山2の右
側面に当たり、ねじ山11aの右側面とねじ山2の左側
面との間に、ガタGに相当する遊びが生じる。同様に、
第2カプラー20の主ねじ部21のねじ山21aの左側
面がねじ鉄筋1Rのねじ山2の右側面に当たり、ねじ山
21aの右側面とねじ山2の左側面との間にも、ガタG
に相当する遊びが生じる。
In the above screwing method, the couplers 10, 20
Although it is ideal from the viewpoint of increasing the relative screwing rotation speed of each other as much as possible, the second coupler 2
It is necessary to reverse 0 once. Therefore, the following screwing method is also effective. Couplers 10 and 20 shown in FIG.
Immediately before the start of screwing, the couplers 10 and 20 are moved to the left along the axis without turning. As a result, FIG.
As shown in (A), the main screw portion 11 of the first coupler 10
Of the thread 11a of the threaded rebar 1L corresponds to the right side of the thread 2 of the screw rebar 1L, and a play corresponding to the play G occurs between the right side of the thread 11a and the left side of the thread 2. Similarly,
The left side of the thread 21a of the main thread portion 21 of the second coupler 20 corresponds to the right side of the thread 2 of the threaded reinforcing bar 1R, and the play G is also provided between the right side of the thread 21a and the left side of the thread 2.
Play occurs.

【0027】次に、第2カプラー20を、上記ねじ山2
1a,2の当たりを維持したまま回すと、やがてカプラ
ー10,20の微細ねじ部12,22の端同士が当た
る。この状態で、第2カプラー20を押しながらさらに
同方向すなわち右回り方向に回すと、やがてねじ切り口
12x,22xが一致し、螺合開始が可能となる。この
最初の当たりから螺合開始までの回動角度Θは0〜36
0°/Kである。第2カプラー21の角度Θの回動に伴
い、図6(B)に示すように、ねじ山21aは、ねじ鉄
筋1Rのねじ山2に対して、軸方向に後退することにな
る。この後退距離を図6(B)においてSで表す。この
後退距離Sは0〜Pa/Kの範囲にある。
Next, the second coupler 20 is connected to the thread 2
When turning while maintaining the contact of 1a and 2, the ends of the fine threaded portions 12 and 22 of the couplers 10 and 20 eventually come into contact with each other. In this state, when the second coupler 20 is pressed and turned further in the same direction, that is, clockwise, the threaded cuts 12x and 22x eventually coincide, and screwing can be started. The rotation angle ま で from the first contact to the start of screwing is 0 to 36.
0 ° / K. With the rotation of the second coupler 21 by the angle Θ, as shown in FIG. 6B, the screw thread 21a retreats in the axial direction with respect to the screw thread 2 of the screw reinforcing bar 1R. This retreat distance is represented by S in FIG. This retreat distance S is in the range of 0 to Pa / K.

【0028】図6(B)の状態から、図1,図6(C)
に示すメタルタッチ状態になるには、ねじ山2に対する
ねじ山11a,21aの軸方向移動量の合計が、(S+
G)だけ必要である。ここでSは0〜Pa/Kの範囲に
あるから、必要移動量は、G〜(G+Pa/K)の範囲
となる。したがって、メタルタッチまでの両カプラー1
0,20の相対的回転数Nは、次式で表すことができ
る。 G/D<N<(G+Pa/K)/D ・・・(10)
From the state of FIG. 6B, FIGS. 1 and 6C
In order to enter the metal touch state shown in FIG. 5, the sum of the axial movement amounts of the threads 11a and 21a with respect to the thread 2 is (S +
Only G) is required. Since S is in the range of 0 to Pa / K, the required movement amount is in the range of G to (G + Pa / K). Therefore, both couplers 1 until metal touch
The relative rotational speed N of 0 and 20 can be expressed by the following equation. G / D <N <(G + Pa / K) / D (10)

【0029】なお、図6の螺合方法において、微細ねじ
部12,22の最初の当たり状態から螺合開始位置ま
で、第2カプラー20を回わす際に、第2カプラー20
の主ねじ部21のねじ山21aの右側面が、ねじ鉄筋1
Rのねじ山2に当たるとそれ以上は同方向に回動できな
い。この場合には、図5の螺合方法と同様に逆回り(左
回り)方向に第2カプラー20を回して螺合位置を探さ
なければならない。そこで、式(8)の条件を満たすよ
うに設計すれば、第2カプラー20の主ねじ部21のね
じ山21aの右側面が、ねじ鉄筋1Rのねじ山2に当た
る前に螺合を開始することができる。図6の螺合方法で
は、図5の螺合方法に比べて若干螺合回転数が少なくな
る可能性があるが、螺合作業は逆回りを必要としないの
で楽になる。
In the screwing method shown in FIG. 6, when turning the second coupler 20 from the initial contact state of the fine screw portions 12 and 22 to the screwing start position, the second coupler 20 is rotated.
The right side surface of the thread 21a of the main thread portion 21
When it hits the R thread 2, it cannot rotate in the same direction any more. In this case, similarly to the screwing method of FIG. 5, the second coupler 20 must be turned in the counterclockwise (counterclockwise) direction to find the screwing position. Therefore, if the design is made so as to satisfy the condition of the expression (8), the screwing is started before the right side surface of the thread 21a of the main thread portion 21 of the second coupler 20 hits the thread 2 of the screw reinforcing bar 1R. Can be. In the screwing method of FIG. 6, there is a possibility that the screwing rotation speed may be slightly lower than that of the screwing method of FIG. 5, but the screwing operation does not require reverse rotation, so that it is easier.

【0030】上記図4,図5,図6の螺合方法では、微
細ねじ部12,22の螺合のために第2カプラー20だ
けを回すようにしたが、第1カプラー10だけを回すよ
うにしてもよいし、両カプラー10,20を回すように
してもよい。
In the screwing method shown in FIGS. 4, 5 and 6, only the second coupler 20 is turned for screwing the fine screw portions 12 and 22, but only the first coupler 10 is turned. Alternatively, both couplers 10 and 20 may be turned.

【0031】次に、下記のような寸法を採用した場合を
例にとって、説明する。 Pa=9.9mm (ねじ鉄筋ピッチ) Pb=1.8mm (微細ねじ部ピッチ) K=6条 (微細ねじ部のねじ条数) G=2.5mm (ねじ鉄筋と主ねじ部との間のガ
タ) L=10.8mm (微細ねじ部のリード) D=0.9mm (リード差) 上記寸法は、前述した式(1),(6),(7),
(8)の条件をすべて満足する。第1の螺合方法では、
式(9)に基づき、3.7回転〜5.6回転でカプラー
10,20が螺合され、上述のメタルタッチとなる。第
2の螺合方法では、式(10)に基づき、2.8回転か
ら4.6回転でカプラー10,20が螺合され、メタル
タッチとなる。
Next, a case where the following dimensions are employed will be described as an example. Pa = 9.9 mm (pitch of threaded rebar) Pb = 1.8 mm (pitch of fine threaded portion) K = 6 (number of threaded threads in fine threaded portion) G = 2.5 mm (between threaded rebar and main threaded portion) Lattice) L = 10.8mm (Lead of fine thread) D = 0.9mm (Lead difference) The above dimensions are obtained by the above-mentioned equations (1), (6), (7),
All the conditions of (8) are satisfied. In the first screwing method,
Based on Expression (9), the couplers 10 and 20 are screwed together at 3.7 to 5.6 rotations, and the above-described metal touch is achieved. In the second screwing method, the couplers 10 and 20 are screwed in 2.8 rotations to 4.6 rotations based on Expression (10), resulting in a metal touch.

【0032】なお、カプラー10,20は、主ねじ部1
1,12を有する鋳造品に機械切削で微細ねじ部12,
22を形成することにより得られるものであり、余り誤
差はないが、ねじ鉄筋1L,1Rは圧延により形成する
ので、ピッチPaやガタGに誤差があることが多い。こ
の場合には、誤差範囲の下限値を、上記ピッチPa,ガ
タGとして、寸法条件を定める。
The couplers 10 and 20 are connected to the main screw 1
The fine screw part 12,
22 is formed, and there is not much error. However, since the screw rebars 1L and 1R are formed by rolling, there are many errors in the pitch Pa and the play G. In this case, the dimensional conditions are determined by setting the lower limit of the error range as the pitch Pa and the play G.

【0033】カプラー10,20の螺合が完了した後
に、カプラー10のほぼ中央に形成した注入口19から
グラウトを注入し、ガタG間にグラウトを充填する。そ
の後で、ねじ鉄筋1L,1Rを埋設するようにプレキャ
ストコンクリート構造体間にコンクリート打設する。
After the screwing of the couplers 10 and 20 is completed, grout is injected from an injection port 19 formed substantially at the center of the coupler 10, and grout is filled between the backlashes G. Thereafter, concrete is cast between the precast concrete structures so as to bury the screw reinforcing bars 1L and 1R.

【0034】前述したように、ねじ鉄筋1L,1Rのね
じ山2がカプラー10,20の主ねじ部11,21のね
じ山11a,21aとメタルタッチしているため、ねじ
鉄筋1L,1Rはあたかも1本の連続したねじ鉄筋であ
るように、引っ張り力を担うことができる。また、ねじ
鉄筋1L,1Rと主ねじ11,21のガタGに充填され
たグラウトは、このねじ鉄筋1L,1Rが引っ張り力を
担っている時でも、圧縮力を受けず、カプラー10,2
0によるねじ鉄筋1L,1Rの連結強度を維持すること
ができる。
As described above, since the thread 2 of the screw rebars 1L and 1R is in metal touch with the threads 11a and 21a of the main thread portions 11 and 21 of the couplers 10 and 20, the thread rebars 1L and 1R are as if they were. As if it were a single continuous screw rebar, it can carry a pulling force. Further, the grout filled in the play G of the screw rebars 1L, 1R and the main screws 11, 21 does not receive a compressive force even when the screw rebars 1L, 1R bear a tensile force.
0 can maintain the connection strength of the screw rebars 1L and 1R.

【0035】本発明は上記実施形態に制約されず、種々
の形態を採用可能である。例えば、ねじ鉄筋1L,1R
の螺合が終了した後で、グラウト注入の代わりに、ねじ
鉄筋にそれぞれ螺合された一対のロックナットをカプラ
ー10,20に対して締め付けるようにしてもよい。
The present invention is not limited to the above embodiment, and various modes can be adopted. For example, screw rebar 1L, 1R
After completion of the screwing, a pair of lock nuts respectively screwed to the screw rebar may be tightened to the couplers 10 and 20 instead of grouting.

【0036】[0036]

【発明の効果】以上説明したように、請求項1の発明に
よれば、2本のねじ鉄筋のピッチがずれていても、第
1,第2のカプラーを用いることにより、連結すること
ができる。しかも、ねじ鉄筋とカプラーのねじ山をメタ
ルタッチさせ、このメタルタッチを介してねじ鉄筋が引
っ張り力を担うようにすることができる。請求項2の発
明によれば、カプラーの微細ねじ部の螺合を少なくとも
1回り確保することができ、螺合強度を確保することが
できる。請求項3の発明によれば、一方のカプラーの主
ねじ部のねじ山をねじ鉄筋のねじ山に当てて位置決めし
た状態で、他方のカプラーを回すことにより、微細ねじ
部同士の螺合開始のための角度調節を簡単に行うことが
できる。
As described above, according to the first aspect of the present invention, even if the pitches of the two threaded rebars are shifted, they can be connected by using the first and second couplers. . Moreover, the thread of the screw rebar and the thread of the coupler can be metal-touched, and the screw rebar can exert a tensile force through this metal touch. According to the second aspect of the invention, it is possible to secure at least one turn of the fine screw portion of the coupler, and to secure the screwing strength. According to the invention of claim 3, by turning the other coupler while positioning the thread of the main thread portion of one coupler against the thread of the threaded rebar, the threading of the fine thread portion is started. Angle adjustment can be easily performed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態をなす連結装置と、この連
結装置によって連結されたねじ鉄筋とを示す断面図であ
る。
FIG. 1 is a cross-sectional view showing a connecting device according to an embodiment of the present invention and a screw rebar connected by the connecting device.

【図2】同連結装置の第1カプラーを軸方向から見た図
である。
FIG. 2 is a view of a first coupler of the coupling device as viewed from an axial direction.

【図3】同連結装置の第2カプラーを軸方向から示す図
である。
FIG. 3 is a diagram showing a second coupler of the coupling device from an axial direction.

【図4】(A)〜(C)は、同連結装置を用いてねじ鉄
筋を連結する工程を順を追って示す断面図である。
FIGS. 4A to 4C are cross-sectional views sequentially showing a process of connecting threaded reinforcing bars using the connection device.

【図5】(A)〜(C)は、同連結装置における第1,
第2カプラーの螺合方法の一例を順を追って示す拡大断
面図である。
FIGS. 5 (A) to 5 (C) show first and second embodiments of the connecting device.
It is an expanded sectional view showing an example of a screwing method of the 2nd coupler in order.

【図6】(A)〜(C)は、同連結装置における第1,
第2カプラーの螺合方法の他の例を順を追って示す拡大
断面図である。
FIGS. 6 (A) to 6 (C) show first and second embodiments of the connecting device.
It is an expanded sectional view which shows another example of the screwing method of the 2nd coupler in order.

【符号の説明】[Explanation of symbols]

1L,IR ねじ鉄筋 2 ねじ山 10 第1カプラー 20 第2カプラー 11,21 主ねじ部 11a,21a ねじ山 12,22 微細ねじ部 Pa ねじ鉄筋のピッチ Pb 微細ねじ部のピッチ G ガタ L リード 1L, IR threaded bar 2 thread 10 first coupler 20 second coupler 11 21, 21 main threaded portion 11a, 21a threaded thread 12, 22 fine threaded portion Pa pitch of threaded rebar Pb pitch of fine threaded portion G play L lead

Claims (3)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】 第1,第2のカプラーを備え、これらカ
プラーが、ねじ鉄筋と同一ピッチの雌ねじからなる主ね
じ部と、これよりピッチの小さい多条の微細ねじ部とを
それぞれ有し、第1カプラーの微細ねじ部が雌ねじをな
し、第2カプラーの微細ねじ部が雄ねじをなし、 上記第1,第2カプラーの主ねじ部を、2本のねじ鉄筋
にそれぞれ螺合させた状態で、第1,第2カプラーの微
細ねじ部を互いに螺合させることにより、2本のねじ鉄
筋を連結する装置において、 上記微細ねじ部のリードをねじ鉄筋のピッチより大きく
したことを特徴とするねじ鉄筋用連結装置。
Claims 1. A first and a second couplers, each of which has a main thread portion formed of a female screw having the same pitch as a threaded rebar, and a plurality of fine thread portions having a smaller pitch than the main thread portion. The fine screw portion of the first coupler forms a female screw, the fine screw portion of the second coupler forms a male screw, and the main screw portions of the first and second couplers are screwed into two screw rebars, respectively. An apparatus for connecting two threaded reinforcing bars by screwing fine threaded portions of first and second couplers together, wherein a lead of the fine threaded portion is larger than a pitch of the threaded bar. Connection device for reinforcing bars.
【請求項2】上記ねじ鉄筋のピッチをPaとし、上記主
ねじ部とねじ鉄筋との間の軸方向のガタをGとし,上記
微細ねじ部のねじ条数をKとし、上記微細ねじ部のリー
ドをLとした時、下記の式が成立することを特徴とする
請求項1に記載のねじ鉄筋用連結装置。 Pa/K<2G Pa<L<Pa(1−1/K)+2G
2. The pitch of the screw thread is Pa, the play in the axial direction between the main thread and the screw thread is G, the number of threads of the fine thread is K, and the pitch of the fine thread is K. The connecting device for a screw reinforcing bar according to claim 1, wherein the following formula is satisfied when the lead is L. Pa / K <2G Pa <L <Pa (1-1 / K) + 2G
【請求項3】さらに次式が成立することを特徴とする請
求項2に記載のねじ鉄筋用連結装置。 Pa/K<G
3. The connecting device according to claim 2, wherein the following expression is satisfied. Pa / K <G
JP5297498A1998-02-181998-02-18Connecting device for threaded barPendingJPH11229557A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP5297498AJPH11229557A (en)1998-02-181998-02-18Connecting device for threaded bar

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP5297498AJPH11229557A (en)1998-02-181998-02-18Connecting device for threaded bar

Publications (1)

Publication NumberPublication Date
JPH11229557Atrue JPH11229557A (en)1999-08-24

Family

ID=12929880

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP5297498APendingJPH11229557A (en)1998-02-181998-02-18Connecting device for threaded bar

Country Status (1)

CountryLink
JP (1)JPH11229557A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2002010597A1 (en)*2000-07-282002-02-07Ozawa, JunzoFastening implement
KR101123849B1 (en)2011-11-242012-03-09태연기계주식회사Reinforcement binder mechanism
JP2014020075A (en)*2012-07-172014-02-03Jfe Pipe Fitting Mfg Co LtdScrew node reinforcement joint
DE102013211235A1 (en)*2013-06-172014-12-18Stahlwerk Annahütte Max Aicher GmbH & Co KG Device for connecting two rods arranged eccentrically to one another and device for connecting two components with one rod each
CN104533018A (en)*2014-12-242015-04-22南京工业大学Prestressed FRP rib tensioning and anchoring device
WO2017185193A1 (en)*2016-04-262017-11-02苏犁Double-eccentric-block connecting joint for connecting steel bars of precast members
CN111821539A (en)*2020-07-172020-10-27国药东风总医院 An infusion port for hemodialysis
CN112761308A (en)*2021-01-052021-05-07同济大学Design method of half-thread glue injection type connecting sleeve, thread glue injection type steel bar connecting sleeve and installation method thereof
CN112814283A (en)*2020-12-242021-05-18中交第三航务工程局有限公司江苏分公司Glue pouring connection structure for steel bar sleeve and construction method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2002010597A1 (en)*2000-07-282002-02-07Ozawa, JunzoFastening implement
KR101123849B1 (en)2011-11-242012-03-09태연기계주식회사Reinforcement binder mechanism
JP2014020075A (en)*2012-07-172014-02-03Jfe Pipe Fitting Mfg Co LtdScrew node reinforcement joint
DE102013211235A1 (en)*2013-06-172014-12-18Stahlwerk Annahütte Max Aicher GmbH & Co KG Device for connecting two rods arranged eccentrically to one another and device for connecting two components with one rod each
CN104533018A (en)*2014-12-242015-04-22南京工业大学Prestressed FRP rib tensioning and anchoring device
WO2017185193A1 (en)*2016-04-262017-11-02苏犁Double-eccentric-block connecting joint for connecting steel bars of precast members
CN111821539A (en)*2020-07-172020-10-27国药东风总医院 An infusion port for hemodialysis
CN112814283A (en)*2020-12-242021-05-18中交第三航务工程局有限公司江苏分公司Glue pouring connection structure for steel bar sleeve and construction method
CN112761308A (en)*2021-01-052021-05-07同济大学Design method of half-thread glue injection type connecting sleeve, thread glue injection type steel bar connecting sleeve and installation method thereof

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