JP2003002576A - Hoisting accessory for concrete structure - Google Patents

Hoisting accessory for concrete structure

Info

Publication number
JP2003002576A
JP2003002576A JP2001188800A JP2001188800A JP2003002576A JP 2003002576 A JP2003002576 A JP 2003002576A JP 2001188800 A JP2001188800 A JP 2001188800A JP 2001188800 A JP2001188800 A JP 2001188800A JP 2003002576 A JP2003002576 A JP 2003002576A
Authority
JP
Japan
Prior art keywords
hole
concrete structure
rod
insertion cylinder
cylinder
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
JP2001188800A
Other languages
Japanese (ja)
Inventor
Kazuo Kawakami
嘉寿雄 川上
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.)
TOKURI KK
Tokuri KK
Original Assignee
TOKURI KK
Tokuri KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TOKURI KK, Tokuri KK filed Critical TOKURI KK
Priority to JP2001188800A priority Critical patent/JP2003002576A/en
Publication of JP2003002576A publication Critical patent/JP2003002576A/en
Pending legal-status Critical Current

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  • Load-Engaging Elements For Cranes (AREA)

Abstract

PROBLEM TO BE SOLVED: To facilitate attaching onto a concrete structure, and allow reusing repeatedly. SOLUTION: This accessory 1 consists of a cylindrical insertion body 4 inserted into a through hole 3 formed in the concrete structure 2, and a reversedly-tapered pressure contact rod 5 assembled vertically movably in an inner face of the cylindrical insertion body 4. Plural expanding slots 7 are formed in a cylindrical part 6 of the body 4, and plural elastically deformable elastic pieces 8 are formed between the slots 7. The pressure contact rod 5 has a screw rod 10 projected from the cylindrical insertion body 4, and the each elastic piece 8 is expanded outwards in a reversely-tapered part 5B of the pressure contact rod 5 by tightening a nut 13 screwed to the screw rod 10. The respective elastic pieces 8 are brought into pressure-contact thereby with an inner circumferential face of the through hole 3 to prevent the cylindrical insertion body 4 from coming off in the through hole 3.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、コンクリートパネルや
コンクリートブロックなどのコンクリート構造体を吊上
げるコンクリート構造体用吊具に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete structure suspender for suspending a concrete structure such as a concrete panel or a concrete block.

【0002】[0002]

【従来の技術】従来からコンクリートパネルやコンクリ
ートブロックなどのコンクリート構造体においては、脱
型作業時や施工時などにおける運搬時にワイヤなどで用
いて吊上げている。このため、コンクリートパネルなど
においては、成形時にワイヤを引っ掛けるためのアンカ
ーボルトを植設するようにしている。
2. Description of the Related Art Conventionally, a concrete structure such as a concrete panel or a concrete block has been lifted by using a wire or the like during transportation during demolding work or construction. For this reason, in concrete panels and the like, anchor bolts for hooking wires during molding are planted.

【0003】このように、コンクリート構造体にアンカ
ーボルトを植設する場合、図6に示すように、コンクリ
ート構造体Sの成形用型枠KにアンカーボルトAを着脱
自在に組み付ける必要があり、通常、この種のコンクリ
ート構造体Sには複数のアンカーボルトAを植設するこ
ととから、成形用型枠KへのアンカーボルトAの組付作
業はきわめて面倒で手間がかかる。すなわち、この種の
コンクリート構造体Sに植設されるアンカーボルトA
は、コンクリート構造体Sから突出しないように、コン
クリート構造体Sに形成する窪み部S1に臨ませてアン
カーボルトAを植設している。したがって、成形用型枠
Kの窪み部S1に対応した保持具Hを成形用型枠Kに固
定し、この成形用型枠KにアンカーボルトAを着脱自在
に組み付けるゴム材H1を嵌合させることから、成形用
型枠Kに保持具Hをボルト止めした後、その保持具Hに
ゴム材H1を装着し、さらに、そのゴム材H1にアンカ
ーボルトAをセットすることから、これらの部品の組み
付け作業に面倒な手間がかかる。また、このようにして
コンクリート構造体Sに植設されるアンカーボルトAは
コンクリート構造体Sを吊り上げ後は、不要であるが、
コンクリート構造体Sに植設されたアンカーボルトAは
コンクリート構造体Sから取り外すことができず、コス
トもかかるという問題があった。
As described above, when anchor bolts are planted in a concrete structure, it is necessary to detachably attach the anchor bolt A to the molding frame K of the concrete structure S as shown in FIG. Since a plurality of anchor bolts A are planted in the concrete structure S of this type, the work of assembling the anchor bolts A to the forming frame K is extremely troublesome and time-consuming. That is, the anchor bolt A that is planted in this type of concrete structure S
The anchor bolt A is planted so as to face the recess S1 formed in the concrete structure S so as not to project from the concrete structure S. Therefore, the holder H corresponding to the recess S1 of the molding frame K is fixed to the molding frame K, and the rubber material H1 to which the anchor bolt A is detachably assembled is fitted to the molding frame K. Then, after the holding tool H is bolted to the molding frame K, the rubber material H1 is attached to the holding tool H, and the anchor bolt A is set on the rubber material H1. Troublesome work is required. Further, the anchor bolt A thus planted in the concrete structure S is unnecessary after the concrete structure S is lifted,
The anchor bolt A planted in the concrete structure S cannot be removed from the concrete structure S, and there is a problem in that the cost is high.

【0004】本発明はかかる課題を解決するために成さ
れたもので、繰り返して再利用可能であるととも、着脱
が容易なコンクリート構造体用吊具を提供することを目
的とする。
The present invention has been made to solve the above problems, and an object of the present invention is to provide a suspender for a concrete structure which can be reused repeatedly and which can be easily attached and detached.

【0005】[0005]

【課題を解決するための手段】本発明の請求項1のコン
クリート構造体用吊具は、コンクリート構造体に形成さ
れた穴に挿入する挿入筒体と、この挿入筒体の内面に上
下動自在に組み付けられる圧接杆と、この圧接杆の一端
に形成するねじ杆と、このねじ杆に形成する吊り部と、
前記ねじ杆に螺着する締付部材とを備え、前記挿入筒体
は前記コンクリート構造体の穴に挿入する筒部を有し、
この筒部に複数の割り溝を形成してこれら割り溝の間に
弾性変形可能な複数の弾性片を形成するとともに、前記
筒部の内周面と前記圧接杆の外周面の少なくとも何れか
一方に、前記圧接杆の移動に伴って挿入筒体を拡径させ
る方向に圧接する圧接部を形成したものである。
According to a first aspect of the present invention, there is provided a suspender for a concrete structure, comprising: an insertion cylinder to be inserted into a hole formed in the concrete structure; and an up-and-down movable inner surface of the insertion cylinder. A pressure rod to be attached to the screw rod, a screw rod formed at one end of the pressure rod, and a hanging portion formed on the screw rod,
A tightening member that is screwed to the screw rod, wherein the insertion cylinder has a cylinder portion to be inserted into a hole of the concrete structure,
A plurality of split grooves are formed in the tubular portion to form a plurality of elastically deformable elastic pieces between the split grooves, and at least one of the inner peripheral surface of the tubular portion and the outer peripheral surface of the pressure contact rod is formed. Further, a press contact portion is formed that presses in a direction of expanding the diameter of the insertion cylinder with the movement of the press rod.

【0006】上記構成により、コンクリート構造体の穴
に挿入筒体を挿入した後、締付部材を締め付けると、挿
入筒体に組み付けた圧接杆によって挿入筒体の弾性片が
外側に押し広げられる。これにより、挿入筒体の弾性片
が穴の内周面を圧接し、コンクリート構造体の穴に挿入
筒体が抜け止めされる。こうしてコンクリート構造体に
装着した吊具をワイヤなどで吊上げてコンクリート構造
体を持ち上げることができる。また、コンクリート構造
体を降ろしてコンクリート構造体から吊具を取り外す場
合、締付部材を緩めれば挿入筒体の弾性片を内側に撓ま
せることが可能となり、簡単に吊具を着脱することがで
きる。
With the above construction, when the inserting cylinder is inserted into the hole of the concrete structure and then the tightening member is tightened, the elastic piece of the inserting cylinder is pushed outward by the pressing rod assembled to the inserting cylinder. As a result, the elastic piece of the insertion cylinder presses against the inner peripheral surface of the hole, and the insertion cylinder is prevented from coming off the hole of the concrete structure. In this way, the concrete structure can be lifted by lifting the hanging tool attached to the concrete structure with a wire or the like. Also, when removing the lifting device from the concrete structure by lowering the concrete structure, it is possible to bend the elastic piece of the insertion tube inward by loosening the fastening member, and the lifting device can be easily attached and detached. it can.

【0007】本発明の請求項2のコンクリート構造体用
吊具は、請求項1記載のコンクリート構造体用吊具にお
いて、前記コンクリート構造体の穴がテーパ状に形成さ
れ、この穴に挿入される前記筒体が前記穴と嵌合するよ
うにテーパ状に形成されているものである。
According to a second aspect of the present invention, there is provided a concrete structure suspender according to the first aspect of the present invention, wherein the concrete structure has a hole in which the hole is tapered and is inserted into the hole. The cylindrical body is formed in a tapered shape so as to fit in the hole.

【0008】上記構成により、コンクリートパネルやコ
ンクリートブロックなどのコンクリート構造体は、施工
時に多数のコンクリート構造体を並べ、隣接するコンク
リート構造体に通した連結材で連結するのが一般的であ
って、コンクリート構造体には連結材を通すための貫通
した穴が形成されている。そして、この貫通穴を利用し
て吊具の挿入筒体を装着する。また、コンクリート構造
体に成形される貫通穴は、中子型で成形するものであ
り、中子型を脱型する際の抜き勾配によって貫通穴はテ
ーパ状に形成される。その貫通穴の形状に合わせて挿入
筒体をテーパ状に形成することによって、貫通穴に挿入
筒体を挿入する際、貫通穴と挿入筒体とが嵌合し、多
少、強く挿入筒体を押し込むだけで、挿入筒体をコンク
リート構造体を抜け止めすることができる。このため、
例えば、横方向に貫通した貫通穴に吊具を組み込む場合
であれば、吊具を上方に引張った際、吊具が抜ける方向
に直接、力が加わらないため、単に貫通穴に挿入筒体を
挿入するだけでもコンクリート構造体から挿入筒体が抜
け出ることなく保持できるから、極めて簡単に挿入筒体
をコンクリート構造体に組み付けることができる。
With the above structure, a concrete structure such as a concrete panel or a concrete block is generally formed by arranging a large number of concrete structures at the time of construction and connecting them with a connecting material that passes through adjacent concrete structures. A through hole is formed in the concrete structure for passing a connecting material. Then, using this through hole, the insertion cylinder of the hanging tool is mounted. Further, the through hole formed in the concrete structure is formed by a core mold, and the through hole is formed in a tapered shape due to a draft when the core mold is released from the mold. By forming the insertion cylinder in a tapered shape in accordance with the shape of the through hole, when inserting the insertion cylinder into the through hole, the through hole and the insertion cylinder are fitted together, and the insertion cylinder is slightly stronger. By simply pushing it in, the insertion cylinder can be prevented from coming off the concrete structure. For this reason,
For example, in the case of incorporating a hanger into a through hole penetrating in the lateral direction, when pulling the hanger upward, no force is applied directly in the direction in which the hanger comes out, so simply insert the insertion tube into the through hole. Since the insertion cylinder can be held without coming off from the concrete structure only by inserting, the insertion cylinder can be assembled to the concrete structure very easily.

【0009】[0009]

【発明の実施形態】以下、本発明の吊具1の一実施例に
ついて、図1〜図5を参照しながら説明する。吊具1
は、コンクリートパネルやコンクリートブロックなどの
コンクリート構造体2に形成する貫通穴3に挿入する挿
入筒体4と、この挿入筒体4の内面に上下動自在に組み
付けられる圧接杆5とで構成させている。また、コンク
リートパネルなどにおいて形成される貫通穴3は、中子
型(図示しない)で成形するものであり、中子型を脱型
する際の抜き勾配によって貫通穴3がテーパ状に形成さ
れる。そして、貫通穴3に挿入する挿入筒体4の筒部6
は前記貫通穴3と嵌合するように貫通穴3と同様、先端
に向かって僅かではあるが細くなるようにテーパ状に形
成され、一方、挿入筒体4の内周面は逆テーパ状に形成
されている。また、前記筒部6には6本の割り溝7が6
0度の間隔毎に形成されており、これら各割り溝7によ
って各割り溝7の間に弾性変形可能な複数の弾性片8を
形成している。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lifting tool 1 of the present invention will be described below with reference to FIGS. Hanging tool 1
Is composed of an insertion cylinder 4 to be inserted into a through hole 3 formed in a concrete structure 2 such as a concrete panel or a concrete block, and a pressure rod 5 that is vertically movably assembled to the inner surface of the insertion cylinder 4. There is. Further, the through hole 3 formed in a concrete panel or the like is formed by a core mold (not shown), and the through hole 3 is formed in a tapered shape by a draft when the core mold is released. . Then, the tubular portion 6 of the insertion tubular body 4 to be inserted into the through hole 3
Like the through hole 3, it is formed in a tapered shape so as to be fitted to the through hole 3 so as to become slightly narrower toward the distal end, while the inner peripheral surface of the insertion cylindrical body 4 is formed in an inverse tapered shape. Has been formed. Further, the tubular portion 6 has six split grooves 7
It is formed at intervals of 0 degree, and a plurality of elastic pieces 8 which can be elastically deformed are formed between the split grooves 7 by the split grooves 7.

【0010】前記筒部6の内部に配置する前記圧接杆5
は、先端部より基端側が細い逆テーパ状に形成される。
具体的な各部の寸法について説明すると筒部6は、図3
に示すように全長Lが120mm、先端外径dが32.3m
m、基端外径d1が35mmで先端に向って細くなるテー
パ状に形成されている。一方、筒部6の内面側は、その
全長L1が100mm、先端内径d2が28.3mm、基端内
径d3が26.9mmで基端に向って細くなる逆テーパ状に
形成されている。圧接杆5は図4に示すように全長L2
が80mm、先端外径d4は筒部6の先端内径d2と同じ
28.3mmであるが、基端内径d5は27.2mmで、筒部6
の内面側と同様、基端に向って細くなる逆テーパ状に形
成されている。なお、筒部6の内・外周面及び圧接杆5
のテーパ角は0.4度である。また、挿入筒体4の内側に
配置する圧接杆5の基端部5Aと筒部6の内底部との間
には20mmの隙間Kが形成されている。
The pressure contact rod 5 disposed inside the tubular portion 6
Is formed in an inverted taper shape in which the base end side is thinner than the tip end portion.
Explaining concrete dimensions of each part, the cylindrical part 6 is shown in FIG.
As shown in, the total length L is 120 mm and the tip outer diameter d is 32.3 m.
m, the outer diameter d1 of the base end is 35 mm, and is formed in a taper shape that becomes thinner toward the tip. On the other hand, the inner surface side of the tubular portion 6 is formed in an inverted taper shape with a total length L1 of 100 mm, a distal end inner diameter d2 of 28.3 mm and a proximal end inner diameter d3 of 26.9 mm. The pressing rod 5 has a total length L2 as shown in FIG.
Is 80 mm, and the tip outer diameter d4 is the same as the tip inner diameter d2 of the tubular portion 6.
Although it is 28.3 mm, the inner diameter d5 of the base end is 27.2 mm and the tubular portion 6
Like the inner surface side, the reverse taper shape is formed such that it becomes thinner toward the base end. The inner and outer peripheral surfaces of the tubular portion 6 and the press rod 5
Has a taper angle of 0.4 degrees. Further, a gap K of 20 mm is formed between the base end portion 5A of the pressure contact rod 5 arranged inside the insertion cylinder body 4 and the inner bottom portion of the cylinder portion 6.

【0011】また前記圧接杆5の基端にはねじ杆10が一
体形成されている。また、前記挿入筒体4の底部にはね
じ杆10を挿通する挿通孔11が形成され、この通孔9から
外部に突出したねじ杆10に締付部材たるナット13がワッ
シャ12を介して螺着されている。また、前記ねじ杆10の
先端にはワイヤYなどを通すリング状の吊り部15が溶接
などの適宜手段で一体的に固定されている。
A screw rod 10 is integrally formed at the base end of the pressure contact rod 5. Further, an insertion hole 11 for inserting the screw rod 10 is formed in the bottom of the insertion cylinder 4, and a nut 13 as a tightening member is screwed through a washer 12 to the screw rod 10 protruding from the through hole 9 to the outside. It is worn. Further, a ring-shaped suspension portion 15 through which the wire Y or the like is passed is integrally fixed to the tip of the screw rod 10 by an appropriate means such as welding.

【0012】以上のように構成される本実施例の使用方
法について説明する。まず、コンクリート構造体2に形
成する貫通穴3に挿入筒体4の筒部6を挿入する。この
場合、挿入筒体4の筒部6は、貫通穴3に対応して先端
部に向かって細くなるテーパ状に形成されているため、
貫通穴3内に筒部6を挿入した際、貫通穴3の内周面に
挿入筒体4の筒部6が密着する。これにより、挿入筒体
4はある程度、貫通穴3に抜け止め保持される。すなわ
ち、挿入筒体4の筒体6には割り溝7が形成され、筒体
6の先端を絞って各割り溝7の間に形成される弾性片8
を内側に撓ませることが可能である。このため、筒体6
の先端側を縮径させた状態で筒部6を貫通穴3の内部に
押し込むことによって筒体6の内部において各割り溝7
の間に形成される各弾性片8が復帰して貫通穴3の内周
面に各弾性片8を圧接させることができる。
A method of using the present embodiment having the above structure will be described. First, the tubular portion 6 of the insertion tubular body 4 is inserted into the through hole 3 formed in the concrete structure 2. In this case, since the tubular portion 6 of the insertion tubular body 4 is formed in a tapered shape that becomes thinner toward the tip end portion corresponding to the through hole 3,
When the tubular portion 6 is inserted into the through hole 3, the tubular portion 6 of the insertion tubular body 4 comes into close contact with the inner peripheral surface of the through hole 3. As a result, the insertion tube body 4 is retained and retained in the through hole 3 to some extent. That is, the split groove 7 is formed in the tubular body 6 of the insertion tubular body 4, and the elastic piece 8 formed between the split grooves 7 by squeezing the tip of the tubular body 6.
Can be bent inward. Therefore, the tubular body 6
By pushing the tubular portion 6 into the through hole 3 in a state in which the tip side of the tubular body is contracted, the split grooves 7 are formed inside the tubular body 6.
The elastic pieces 8 formed between the two can be returned to press the elastic pieces 8 against the inner peripheral surface of the through hole 3.

【0013】このようにして、テーパ状に形成された貫
通穴3に、該貫通穴3と同様、テーパ状に形成した挿入
筒体4の筒部6を挿入することによって、挿入筒体4を
貫通穴3に抜け止めされるが、挿入筒体4から突出した
ねじ杆10に螺着するナット13を締め付けることによっ
て、より確実の挿入筒体4が抜け止めされる。すなわ
ち、挿入筒体4から突出したねじ杆10に螺着するナット
13を締め付けることにより、挿入筒体4内に組み付けた
圧接杆5が上昇する。そして、圧接杆5の外周面と筒部
6の内周面には圧接部たる逆テーパ部5B,6Bがそれ
ぞれ形成されているため、筒部6の逆テーパ部6Bに沿
って圧接杆5が上昇するのに伴い、筒部6に形成する各
弾性片8が圧接杆5によって外方に押し広げられる。こ
れにより、各弾性片8が貫通穴3の内周面に強く圧接し
て貫通穴3に挿入筒体4が確実に抜け止めされる。この
後、ねじ杆10の先端に形成する吊り部15にワイヤYを通
し、挿入筒体4を持ち上げる。この時、貫通穴3に対し
て挿入筒体4が抜け止めされ、その挿入筒体4に内側に
組み付けた圧接杆5の基端部5Aと挿入筒体4の底部と
の間に隙間Kが形成されているため、圧接杆5は上方側
への移動が可能である。このため、コンクリート構造体
2の吊上げ時において圧接杆5には常に上方側への引張
力Fが加わり、挿入筒体4の弾性片8は、内部に組み込
んだ圧接杆5によって常に外側に押し広る力F1が加わ
るため、コンクリート構造体2と挿入筒体4とが強固に
一体化することができる。これにより、貫通穴3から吊
具1が脱落することなく、コンクリート構造体2を安定
的に吊上げることができる。そして、コンクリート構造
体2を降ろした後は、ナットを緩めて圧接杆5をハンマ
などで叩くなどして下方側に移動させることによって、
貫通穴3から簡単に引き抜くことができる。
In this way, by inserting the tubular portion 6 of the insertion tubular body 4 formed in a tapered shape into the through hole 3 formed in a tapered shape, the insertion tubular body 4 is inserted. Although it is retained in the through hole 3, the insertion barrel 4 is more reliably retained by tightening the nut 13 screwed to the screw rod 10 protruding from the insertion barrel 4. That is, a nut screwed to the screw rod 10 protruding from the insertion cylinder body 4.
By tightening 13, the pressing rod 5 assembled in the insertion cylinder 4 rises. Since the reverse tapered portions 5B and 6B, which are pressure contact portions, are formed on the outer peripheral surface of the pressure contact rod 5 and the inner peripheral surface of the cylindrical portion 6, respectively, the pressure contact rod 5 is formed along the reverse taper portion 6B of the cylindrical portion 6. As it rises, the elastic pieces 8 formed on the tubular portion 6 are pushed outward by the pressing rod 5. As a result, each elastic piece 8 is strongly pressed against the inner peripheral surface of the through hole 3 so that the insertion cylinder 4 is securely retained in the through hole 3. After that, the wire Y is passed through the suspending portion 15 formed at the tip of the screw rod 10, and the insertion cylinder 4 is lifted. At this time, the insertion cylindrical body 4 is prevented from coming off from the through hole 3, and a gap K is formed between the base end portion 5A of the pressure contact rod 5 assembled inside the insertion cylindrical body 4 and the bottom portion of the insertion cylindrical body 4. Since the pressure contact rod 5 is formed, it can be moved upward. Therefore, when the concrete structure 2 is lifted, a tensile force F is always applied to the pressing rod 5 upward, and the elastic piece 8 of the insertion tube body 4 is always pushed outward by the pressing rod 5 incorporated therein. Since the force F1 is applied, the concrete structure 2 and the insertion cylinder 4 can be firmly integrated. As a result, the concrete structure 2 can be stably lifted up without the hanging tool 1 falling off from the through hole 3. After the concrete structure 2 is unloaded, the nut is loosened and the pressure contact rod 5 is hit with a hammer or the like to move it downward.
It can be easily pulled out from the through hole 3.

【0014】以上のように、本実施例では、ナット13を
締め付けて挿入筒体4に組み付けた圧接杆5により挿入
筒体4の弾性片8を外側に押し広げて貫通穴3の内周面
を圧接させることによって、コンクリート構造体2に挿
入筒体4を強固に固定ることができる。また、ナット13
を緩めればコンクリート構造体2から簡単に吊具1を取
り外すことができる。このように、吊具1は必要に応じ
てコンクリート構造体2に対して着脱可能であるため、
従来のように、コンクリート構造体2に吊下げ用のアン
カーボルトを植設する必要はなく、コンクリート構造体
2の成形用型枠の構造を簡略化できる。また、吊具1は
繰り返して再利用可能であるから、経済的である。
As described above, in this embodiment, the elastic piece 8 of the insertion cylinder 4 is pushed outward by the pressure contact rod 5 that is assembled to the insertion cylinder 4 by tightening the nut 13 to expand the inner peripheral surface of the through hole 3. It is possible to firmly fix the insertion cylinder body 4 to the concrete structure 2 by pressing. Also, the nut 13
The hanger 1 can be easily removed from the concrete structure 2 by loosening. In this way, the hanger 1 can be attached to and detached from the concrete structure 2 as needed,
Unlike the conventional case, it is not necessary to plant anchor bolts for suspension in the concrete structure 2, and the structure of the molding frame of the concrete structure 2 can be simplified. In addition, the suspending tool 1 is economical because it can be reused repeatedly.

【0015】さらに、コンクリート構造体2に形成する
貫通穴3は、コンクリート構造体2を連結材を通す穴を
利用するが、貫通穴3は、これを成形する中子型の抜き
勾配が必要であるため、テーパ状に形成され、その貫通
穴3の形状に合わせて挿入筒体4をテーパ状に形成する
ことにより、貫通穴3に挿入筒体4を挿入する際、貫通
穴3と挿入筒体4とが嵌合し、多少、強く挿入筒体4を
押し込むだけで、挿入筒体4をコンクリート構造体2を
抜け止めすることができる。このため、例えば、図5に
示すように横方向に貫通した貫通穴3に吊具1を組み込
む場合であれば、吊具1を上方に引張った際、吊具1が
抜ける方向に直接、力が加わらないため、単に貫通穴3
に挿入筒体4を挿入するだけでもコンクリート構造体2
から挿入筒体4が抜け出ることなく、保持できるから、
極めて簡単に挿入筒体4をコンクリート構造体2に組み
付けることができる。また、図1に示すように上下方向
に貫通した貫通穴3に吊具1を組み込む場合には、ナッ
ト13を締め付けることで、挿入筒体4に組み付けた圧接
杆5によって挿入筒体4の弾性片8を外側に押し広げて
コンクリート構造体2の貫通穴3に挿入筒体4を確実に
抜け止めすることができ、吊上げ時の挿入筒体4の脱落
を防止することができる。
Further, the through hole 3 formed in the concrete structure 2 utilizes a hole through which the connecting member is passed through the concrete structure 2, but the through hole 3 requires a core-type draft for molding the through hole 3. Therefore, when the insertion cylinder 4 is inserted into the through hole 3 by inserting the insertion cylinder 4 into the through hole 3 by forming the insertion cylinder 4 into a tapered shape in accordance with the shape of the through hole 3. The insertion cylindrical body 4 can be prevented from coming off from the concrete structure 2 by merely engaging the insertion cylindrical body 4 with the body 4 and pushing the insertion cylindrical body 4 a little strongly. Therefore, for example, in the case of incorporating the hanger 1 into the through hole 3 penetrating in the lateral direction as shown in FIG. 5, when the hanger 1 is pulled upward, a force is applied directly in the direction in which the hanger 1 comes out. Is not added, so simply through hole 3
Simply insert the insertion cylinder 4 into the concrete structure 2
Since the insertion tube body 4 can be held without coming out,
The insertion cylinder 4 can be assembled to the concrete structure 2 very easily. Further, as shown in FIG. 1, when assembling the hanger 1 in the through hole 3 penetrating in the vertical direction, by tightening the nut 13, the elasticity of the insertion tube body 4 is made elastic by the pressure contact rod 5 attached to the insertion tube body 4. The insertion cylinder 4 can be reliably prevented from slipping out of the through hole 3 of the concrete structure 2 by pushing the piece 8 outward, and the insertion cylinder 4 can be prevented from falling off during lifting.

【0016】以上、本発明の実施例について詳述した
が、本発明は、前記実施例に限定されるものではなく、
本発明の要旨の範囲内で種々の変形実施が可能である。
例えば、前記実施例では、圧接杆5の外周面と筒部6の
内周面のそれぞれに弾性片を外側に拡径させる逆テーパ
部5B,6Bを形成したが、何れか一方に逆テーパ部を
形成すればよい。さらに、圧接杆5の外周面と筒部6の
内周面を全体的に逆テーパ状に形成して圧接部とした例
を示したが、各弾性片に対応させて部分的に傾斜させた
突部を形成し、これを圧接部としてもよい。また、吊具
の全体的な形状、各部の寸法などは適宜選定すればよ
い。また、挿入筒体を挿入する穴はテーパ状に形成する
必要はなく、ストレートの穴であっても吊具を固定する
ことが可能である。また、断面が四角形あるなどの角穴
であってもよく、この場合、その角穴に挿入する挿入筒
体の形状を角筒状に形成すればよく、挿入筒体や、その
挿入筒体の内部に挿入する圧接体の形状なども適宜選定
すればよい。
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments.
Various modifications can be made within the scope of the present invention.
For example, in the above-described embodiment, the reverse taper portions 5B and 6B for expanding the diameter of the elastic piece to the outside are formed on the outer peripheral surface of the pressure contact rod 5 and the inner peripheral surface of the cylindrical portion 6, respectively. Should be formed. Furthermore, although an example was shown in which the outer peripheral surface of the pressure contact rod 5 and the inner peripheral surface of the tubular portion 6 were formed in a reverse taper shape as a whole to form a pressure contact portion, but they were partially inclined corresponding to each elastic piece. A protrusion may be formed and this may be used as a pressure contact portion. Further, the overall shape of the suspender, the dimensions of each part, and the like may be appropriately selected. Further, it is not necessary to form the hole into which the insertion cylinder is inserted in a tapered shape, and it is possible to fix the hanging tool even if it is a straight hole. Further, it may be a square hole having a rectangular cross section, and in this case, the shape of the insertion cylinder to be inserted into the square hole may be formed into a square cylinder shape. The shape of the pressure contact body to be inserted inside may be appropriately selected.

【0017】[0017]

【発明の効果】本発明の請求項1のコンクリート構造体
用吊具によれば、コンクリート構造体に形成された穴に
挿入する挿入筒体と、この挿入筒体の内面に上下動自在
に組み付けられる圧接杆と、この圧接杆の一端に形成す
るねじ杆と、このねじ杆に形成する吊り部と、前記ねじ
杆に螺着する締付部材とを備え、前記挿入筒体は前記コ
ンクリート構造体の穴に挿入する筒部を有し、この筒部
に複数の割り溝を形成してこれら割り溝の間に弾性変形
可能な複数の弾性片を形成するとともに、前記筒部の内
周面と前記圧接杆の外周面の少なくとも何れか一方に、
前記圧接杆の移動に伴って挿入筒体を拡径させる方向に
圧接する圧接部を形成したものであるから、コンクリー
ト構造体を吊上げる際、吊具を簡単に取り付けることが
できるとともに、コンクリート構造体を降ろし後、コン
クリート構造体から吊具を簡単に取り外すことができ
る。これにより、吊具を繰り返して再利用可能であるか
ら、経済的である。
According to the suspending tool for the concrete structure of the first aspect of the present invention, the inserting cylinder inserted into the hole formed in the concrete structure and the vertically movable assembly on the inner surface of the inserting cylinder. A pressure rod, a screw rod formed at one end of the pressure rod, a suspension formed on the screw rod, and a tightening member screwed to the screw rod, and the insertion cylinder has the concrete structure. Having a tubular portion to be inserted into the hole, and forming a plurality of split grooves in the tubular portion to form a plurality of elastically deformable elastic pieces between the split grooves, and an inner peripheral surface of the tubular portion. On at least one of the outer peripheral surface of the pressure rod,
Since a press contact portion is formed that presses in a direction in which the diameter of the insertion cylinder is expanded along with the movement of the press rod, it is possible to easily attach a suspending tool when the concrete structure is lifted, and the concrete structure. After lowering the body, the hanger can be easily removed from the concrete structure. This makes it possible to reuse the hanging device repeatedly, which is economical.

【0018】本発明の請求項2のコンクリート構造体用
吊具によれば、請求項1記載のコンクリート構造体用吊
具において、前記コンクリート構造体の穴がテーパ状に
形成され、この穴に挿入される前記筒体が前記穴と嵌合
するようにテーパ状に形成されているものであるから、
多少、強く挿入筒体を押し込むだけで、挿入筒体をコン
クリート構造体を抜け止めすることができ、挿入筒体の
組み付け作業を簡略化することができる。
According to a second aspect of the present invention, there is provided a concrete structure hanger according to the first aspect, wherein the hole of the concrete structure is tapered and is inserted into the hole. Since the cylindrical body is formed in a tapered shape so as to fit with the hole,
The concrete structure can be prevented from coming off from the insertion cylinder by simply pushing the insertion cylinder a little, and the work of assembling the insertion cylinder can be simplified.

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

【図1】本発明の一実施例を示す吊具の取り付け状態を
示す断面図である。
FIG. 1 is a cross-sectional view showing a mounting state of a lifting tool showing an embodiment of the present invention.

【図2】同上吊具の分解斜視図であるFIG. 2 is an exploded perspective view of the hanging device.

【図3】同上挿入筒体の断面図である。FIG. 3 is a cross-sectional view of the same insertion cylinder.

【図4】同上圧接体の正面図である。FIG. 4 is a front view of the same pressure contact body.

【図5】同上他の吊具の取り付け状態を示す断面図であ
る。
FIG. 5 is a cross-sectional view showing a mounting state of another lifting tool of the above.

【図6】従来例を示す断面図である。FIG. 6 is a cross-sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 吊具 2 コンクリート構造体 3 貫通穴(穴) 4 挿入筒体 5 圧接杆 6 筒部 7 割り溝 8 弾性片 10 ねじ杆 11 挿通孔 13 ナット(締付部材) 1 hanging equipment 2 concrete structures 3 through holes 4 insertion cylinder 5 Pressure rod 6 tube 7 split groove 8 elastic pieces 10 screw rod 11 insertion hole 13 Nut (tightening member)

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 コンクリート構造体に形成された穴に挿
入する挿入筒体と、この挿入筒体の内面に上下動自在に
組み付けられる圧接杆と、この圧接杆の一端に形成する
ねじ杆と、このねじ杆に形成する吊り部と、前記ねじ杆
に螺着する締付部材とを備え、前記挿入筒体は前記コン
クリート構造体の穴に挿入する筒部を有し、この筒部に
複数の割り溝を形成してこれら割り溝の間に弾性変形可
能な複数の弾性片を形成するとともに、前記筒部の内周
面と前記圧接杆の外周面の少なくとも何れか一方に、前
記圧接杆の移動に伴って挿入筒体を拡径させる方向に圧
接する圧接部を形成したことを特徴とするコンクリート
構造体用吊具。
1. An insertion cylinder body to be inserted into a hole formed in a concrete structure, a pressure rod attached to an inner surface of the insertion cylinder body so as to be vertically movable, and a screw rod formed at one end of the pressure rod. A suspending portion formed on the screw rod and a tightening member screwed on the screw rod are provided, and the insertion cylinder has a cylinder portion to be inserted into a hole of the concrete structure, and a plurality of cylinder portions are provided on the cylinder portion. A plurality of elastic pieces that are elastically deformable are formed between the split grooves, and at least one of the inner peripheral surface of the tubular portion and the outer peripheral surface of the press contact rod is provided with the press contact rod. A suspender for a concrete structure, characterized in that a press-contact portion is press-contacted in a direction in which the diameter of the insertion cylinder is expanded along with the movement.
【請求項2】 前記コンクリート構造体の穴がテーパ状
に形成され、この穴に挿入される前記筒体が前記穴と嵌
合するようにテーパ状に形成されていることを特徴とす
る請求項1記載のコンクリート構造体用吊具。
2. The hole of the concrete structure is formed in a taper shape, and the cylindrical body inserted into the hole is formed in a taper shape so as to fit with the hole. The suspending tool for a concrete structure according to 1.
JP2001188800A 2001-06-21 2001-06-21 Hoisting accessory for concrete structure Pending JP2003002576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001188800A JP2003002576A (en) 2001-06-21 2001-06-21 Hoisting accessory for concrete structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001188800A JP2003002576A (en) 2001-06-21 2001-06-21 Hoisting accessory for concrete structure

Publications (1)

Publication Number Publication Date
JP2003002576A true JP2003002576A (en) 2003-01-08

Family

ID=19027827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001188800A Pending JP2003002576A (en) 2001-06-21 2001-06-21 Hoisting accessory for concrete structure

Country Status (1)

Country Link
JP (1) JP2003002576A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643879B1 (en) 2005-11-23 2006-11-10 배필만 Lift plug
CN103552911A (en) * 2013-09-13 2014-02-05 中交第二航务工程勘察设计院有限公司 Movable hoisting apparatus and construction installation method used by same
KR101832748B1 (en) 2017-09-04 2018-04-13 주식회사 무성건설 Anchor structure for lifting concreat block
KR102604243B1 (en) * 2022-10-25 2023-11-21 주식회사 항도엔지니어링 Anchor type lifting unit and concrete block lifting method using the same
KR102656939B1 (en) * 2023-07-13 2024-04-11 손영찬 A lifting anchor system for precast concrete products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643879B1 (en) 2005-11-23 2006-11-10 배필만 Lift plug
CN103552911A (en) * 2013-09-13 2014-02-05 中交第二航务工程勘察设计院有限公司 Movable hoisting apparatus and construction installation method used by same
KR101832748B1 (en) 2017-09-04 2018-04-13 주식회사 무성건설 Anchor structure for lifting concreat block
KR102604243B1 (en) * 2022-10-25 2023-11-21 주식회사 항도엔지니어링 Anchor type lifting unit and concrete block lifting method using the same
KR102656939B1 (en) * 2023-07-13 2024-04-11 손영찬 A lifting anchor system for precast concrete products

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