JP2799991B2 - Equipment for lifting concrete products - Google Patents
Equipment for lifting concrete productsInfo
- Publication number
- JP2799991B2 JP2799991B2 JP22759396A JP22759396A JP2799991B2 JP 2799991 B2 JP2799991 B2 JP 2799991B2 JP 22759396 A JP22759396 A JP 22759396A JP 22759396 A JP22759396 A JP 22759396A JP 2799991 B2 JP2799991 B2 JP 2799991B2
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary
- bottom plate
- main
- concrete product
- product
- 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.)
- Expired - Fee Related
Links
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Load-Engaging Elements For Cranes (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、たて壁と底板とを
一体に有するコンクリート製品を吊り上げるコンクリー
ト製品の吊り装置に関し、特にL型製品やT型製品など
の擁壁用の大型コンクリート製品を所望の傾斜角度で吊
り上げるのに適するコンクリート製品の吊り装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete product suspending apparatus for lifting a concrete product integrally having a vertical wall and a bottom plate, and more particularly to a large concrete product for retaining walls such as L-shaped products and T-shaped products. The present invention relates to a concrete product suspension apparatus suitable for lifting at a desired inclination angle.
【0002】[0002]
【従来の技術】L型製品やT型製品などのコンクリート
製品を建設現場において据付ける場合、該製品をクレー
ンなどで吊り上げ、所定の位置に据付ける。この据付け
作業に当たっては、据付け基礎面と製品の底板の底面と
が平行になるように吊り上げる必要がある。製品の底板
の底面が据付け基礎面に対して傾斜していると、所定の
位置に据付けるための置き直し作業を伴い作業の遅れに
つながる。また、製品の底板の角部によって据付け基礎
面を削って基礎面の不陸を生じ、構造上の欠陥ともなり
かねない。通常、据付け基礎面は水平であるため、底板
も水平に吊り上げる必要がある。2. Description of the Related Art When a concrete product such as an L-shaped product or a T-shaped product is installed at a construction site, the product is lifted by a crane or the like and installed at a predetermined position. In this installation work, it is necessary to lift the installation base surface and the bottom surface of the bottom plate of the product in parallel. If the bottom surface of the bottom plate of the product is inclined with respect to the installation base surface, a work for re-installing the product at a predetermined position is required, which leads to a delay in the operation. In addition, the corners of the bottom plate of the product may cut the installation base surface, causing unevenness of the base surface, which may be a structural defect. Since the installation base surface is usually horizontal, the bottom plate also needs to be lifted horizontally.
【0003】従来、たて壁と底板とを一体に形成した大
型の擁壁用コンクリート製品を水平に吊り上げる装置と
しては、図5に示すようなものがあった。L型製品30
のたて壁31の上端部及び底板32の端部に埋込み鉄筋
などの吊り具33,33を設け、1本のワイヤーロープ
34の途中に中央吊り具35を配し、ワイヤーロープ3
4の一端をたて壁31に設けた吊り具33に、他端を底
板32に設けた吊り具33にそれぞれ連結する。中央吊
り具35は図6の断面図に示すように、2枚の側板36
を前後に並列に配し、両側板の中央部に吊下げ孔37を
設け、該吊下げ孔37の外周に環状の巻付胴38を取付
け、該巻付胴38の左右対称位置にピン39,39を配
置したもので、ワイヤーロープ34は、その途中を巻付
胴38に1回転するように巻き付け、ピン39,39の
上部を経由させようになっている。[0003] Conventionally, there is a device as shown in FIG. 5 for horizontally lifting a large-sized concrete product for a retaining wall in which a vertical wall and a bottom plate are integrally formed. L-shaped product 30
At the upper end of the vertical wall 31 and at the end of the bottom plate 32, hanging members 33, 33 such as embedded reinforcing bars are provided, and a central hanging member 35 is arranged in the middle of one wire rope 34, and the wire rope 3 is provided.
One end of 4 is connected to the hanging member 33 provided on the wall 31 and the other end is connected to the hanging member 33 provided on the bottom plate 32. As shown in the sectional view of FIG.
Are arranged in parallel at the front and rear, a suspension hole 37 is provided at the center of both side plates, and an annular winding cylinder 38 is mounted on the outer periphery of the suspension hole 37. , 39 are arranged, and the wire rope 34 is wound around the winding cylinder 38 so as to make one rotation, and passes through the upper portions of the pins 39, 39.
【0004】そして、ワイヤーロープ34に負荷のかか
らない状態で、中央吊り具35がL型製品30の重心の
鉛直線40上に位置するように、巻付胴38に巻き付け
たワイヤーロープ34の巻き付け、巻き出し量を調節し
て中央吊り具35の位置を決め、次いで中央吊り具35
の吊下げ孔37にクレーンの吊り上げ用フック41を連
結してクレーンで吊り上げる。Then, the wire rope 34 wound around the winding cylinder 38 is wound so that the center suspender 35 is positioned on the vertical line 40 of the center of gravity of the L-shaped product 30 in a state where no load is applied to the wire rope 34. The unwinding amount is adjusted to determine the position of the central suspender 35, and then the central suspender 35
The hoisting hook 41 of the crane is connected to the hanging hole 37, and the crane is lifted.
【0005】[0005]
【発明が解決しようとする課題】上記従来のものにおい
ては、ワイヤーロープ34に負荷がかかっているとロッ
ク状態となって微調節できないので、中央吊り具35の
位置の調節は、ワイヤーロープ34に負荷がかかってい
ない状態で行わなければならない。このため、正確に水
平状態にするには、何度も調節し直さなければならない
場合もまま生ずる。In the above-mentioned conventional apparatus, if a load is applied to the wire rope 34, the wire rope 34 is locked and cannot be finely adjusted. Must be done without load. For this reason, there is a case where it is necessary to readjust several times in order to accurately set the horizontal state.
【0006】そこで本発明の目的は、吊り上げロープに
負荷がかかった状態であっても、たて壁と底板とを一体
に有するコンクリート製品の底板の傾斜角度の調節、通
常は水平にするための調節が容易にできるコンクリート
製品の吊り装置を提供することにある。Accordingly, an object of the present invention is to adjust the inclination angle of a bottom plate of a concrete product integrally having a vertical wall and a bottom plate even when a load is applied to a lifting rope, usually to make it horizontal. It is an object of the present invention to provide a concrete product suspension device that can be easily adjusted.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明のコンクリート製品の吊り装置は、たて壁と
底板とを一体に形成したコンクリート製品を設け、該コ
ンクリート製品のたて壁の少なくとも1箇所に主吊り具
を取付け、前記コンクリート製品の底板に補助吊り具を
取付け、前記主吊り具に主緊張体の一端を連結し他端を
吊り上げ用フック側に連結し、前記吊り上げ用フック側
と前記補助吊り具とを連結する補助緊張体を設け、該補
助緊張体の長さを調節する長さ調節装置を設けたこと、
を特徴としている。ここで、前記コンクリート製品のた
て壁に取付ける主吊り具は、たて壁に設けた水抜き孔に
取外し可能に取付けるとよい。また、前記長さ調節装置
としてチェーンブロックを用いるとよい。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a concrete product suspending device according to the present invention is provided with a concrete product in which a vertical wall and a bottom plate are integrally formed, and the concrete product has a vertical wall. A main suspension is attached to at least one place of the above, an auxiliary suspension is attached to a bottom plate of the concrete product, one end of a main tension member is connected to the main suspension, and the other end is connected to a lifting hook side, An auxiliary tension member for connecting the hook side and the auxiliary hanging member is provided, and a length adjusting device for adjusting the length of the auxiliary tension member is provided;
It is characterized by. Here, it is preferable that the main hanging tool attached to the vertical wall of the concrete product be detachably attached to a drain hole provided in the vertical wall. Further, a chain block may be used as the length adjusting device.
【0008】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて具体的に説明する。図1は本発明の実施例の
一例を示すL型製品の吊り装置の斜視図、図2は補助吊
り具部の拡大断面図、図3は補助緊張体に負荷がかかっ
ていない状態の側面図、図4は補助緊張体の長さを調節
してL型製品の底板を水平状態にしたときの側面図であ
る。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view of an apparatus for suspending an L-shaped product showing an example of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of an auxiliary suspending portion, and FIG. FIG. 4 is a side view when the length of the auxiliary tension member is adjusted so that the bottom plate of the L-shaped product is in a horizontal state.
【0009】本発明において適用可能なコンクリート製
品としては、たて壁と底板とを一体に形成したコンクリ
ート製品、特にL型製品やT型製品などの擁壁用の大型
コンクリート製品が挙げられる。以下においては、擁壁
用L型製品を吊り上げる場合を例に説明する。The concrete products applicable to the present invention include concrete products in which a vertical wall and a bottom plate are integrally formed, especially large-sized concrete products for retaining walls such as L-shaped products and T-shaped products. Hereinafter, a case where the L-shaped product for retaining wall is lifted will be described as an example.
【0010】図において、符号1は擁壁用L型製品で、
たて壁2と底板3とが一体に形成されてなる。このL型
製品1のたて壁2の上下方向の中間部には水抜き孔4,
4が同じ高さ位置に左右2箇所形成されており、該水抜
き孔4,4に主吊り具5,5を取外し可能に取付ける。
一方、底板3の中央部には補助吊り具6を取付けてあ
る。In the drawing, reference numeral 1 denotes an L-shaped product for a retaining wall,
The vertical wall 2 and the bottom plate 3 are integrally formed. Drain holes 4 are formed in the vertical intermediate portion of the vertical wall 2 of the L-shaped product 1.
4 are formed at the same height position on the left and right, and the main hanging members 5, 5 are detachably attached to the drain holes 4, 4.
On the other hand, an auxiliary suspension 6 is attached to the center of the bottom plate 3.
【0011】符号7はロープ、ワイヤーロープ、チェー
ン等の主緊張体で、一端(下端)側にはバネ付きフック
8を取付け、他端(上端)側にはワイヤーリング9を取
付けてある。そして、下端側のバネ付きフック8を主吊
り具5のシャックル10に連結し、上端側をワイヤーリ
ング9を介してクレーンなどの吊り上げ装置の吊り上げ
用フック11に連結する。主吊り具5,5を左右2箇所
に設けて、2本の主緊張体7,7で製品1を吊り上げる
ようにすれば、左右にぶれることなく吊り上げることが
できる。なお、主緊張体7としては、引張り強さ、耐磨
耗性などに優れるワイヤーロープが好ましい。Reference numeral 7 denotes a main tension member such as a rope, a wire rope, a chain, or the like. A hook 8 with a spring is attached to one end (lower end), and a wire ring 9 is attached to the other end (upper end). Then, the spring-attached hook 8 at the lower end is connected to the shackle 10 of the main suspending device 5, and the upper end is connected to the lifting hook 11 of a lifting device such as a crane via the wire ring 9. If the main suspenders 5, 5 are provided at two locations on the left and right, and the product 1 is suspended by the two main tension members 7, 7, the product 1 can be suspended without being shaken left and right. The main tension member 7 is preferably a wire rope excellent in tensile strength, abrasion resistance and the like.
【0012】符号12は吊り上げ用フック11側と補助
吊り具6とを連結するロープ、ワイヤーロープ、チェー
ン等の補助緊張体で、その下部側には、補助緊張体12
の長さを調節する長さ調節装置としてのチェーンブロッ
ク13を設けてある。Reference numeral 12 denotes an auxiliary tension member such as a rope, a wire rope, or a chain connecting the lifting hook 11 and the auxiliary hanging member 6, and an auxiliary tension member 12 is provided below the auxiliary tension member.
A chain block 13 is provided as a length adjusting device for adjusting the length of the chain.
【0013】L型製品1の重心を通る鉛直線に対して近
い所に主吊り具5の連結部(シャックル10)が位置す
るように主吊り具5をたて壁2に取付け、主緊張体7に
よりL型製品1を吊り上げ、補助緊張体12により傾斜
したL型製品1の底板3を所望の傾斜角度に、通常は水
平に保持するようにしているため、主吊り具5には大き
な荷重がかかるが、補助吊り具6には、それほどの荷重
がかからない。すなわち、設計の際、底板3に定着され
た補助吊り具6の許容引張力・剪断力は小さな値とする
ことができる。補助吊り具6は、例えば図2に示すよう
に、底板3に形成した凹部14に補助緊張体12下端に
取付けたバネ付きフック15が係止される係止部16を
有する金具が埋め込まれたものである。The main hanging member 5 is mounted on the wall 2 so that the connecting portion (shackle 10) of the main hanging member 5 is located near a vertical line passing through the center of gravity of the L-shaped product 1, and the main tension member is provided. 7 lifts the L-shaped product 1 and holds the bottom plate 3 of the L-shaped product 1 inclined by the auxiliary tensioner 12 at a desired inclination angle, usually horizontal. However, a small load is not applied to the auxiliary hanging member 6. That is, at the time of design, the allowable tensile force and shearing force of the auxiliary hanging device 6 fixed to the bottom plate 3 can be set to small values. For example, as shown in FIG. 2, the auxiliary hanging device 6 has a recess 14 formed in the bottom plate 3 and a metal fitting having a locking portion 16 to which a hook 15 with a spring attached to the lower end of the auxiliary tensioning member 12 is locked. Things.
【0014】コンクリート製品1のたて壁2に取付ける
主吊り具5を、たて壁2に設けた水抜き孔4に取外し可
能に取付けるようにすれば、コンクリート製品1の製造
時に吊り金具を予め埋め込んでおく必要がなく、コスト
削減になる。また主吊り具5は、据付け後は水抜き孔4
から取外し、何度でも使用できる。If the main hanging member 5 attached to the vertical wall 2 of the concrete product 1 is removably attached to the drain hole 4 provided in the vertical wall 2, the hanging metal fittings can be prepared beforehand when the concrete product 1 is manufactured. There is no need to embed them, resulting in cost reduction. After installation, the main hanging tool 5 has a drain hole 4
Removed from and can be used any number of times.
【0015】チェーンブロック(レバーブロック)13
は、チェーン17に係合するスプロケットの駆動軸をレ
バー18を操作して正逆回転させ、チェーン17の長さ
を調節する。これにより補助緊張体12全体の長さを調
節する。チェーンブロック13は、負荷のかかった状態
でも、レバー18操作で簡単にチェーン17の長さを調
節できるので好ましい。なお、スプロケットの駆動軸
は、手鎖操作により回転させてもよく、モータにより回
転させるようにしてもよい。Chain block (lever block) 13
In this case, the length of the chain 17 is adjusted by operating the lever 18 to rotate the drive shaft of the sprocket engaged with the chain 17 in the forward and reverse directions. Thereby, the length of the whole auxiliary tension body 12 is adjusted. The chain block 13 is preferable because the length of the chain 17 can be easily adjusted by operating the lever 18 even under a load. Note that the drive shaft of the sprocket may be rotated by hand chain operation, or may be rotated by a motor.
【0016】次に、動作を説明する。先ず、水抜き孔
4,4に主吊り具5,5を取付ける。次いで、主緊張体
7,7の下端を主吊り具5,5に連結し、上端側をクレ
ーンの吊り上げ用フック11に連結する。一方補助緊張
体12の上端側をクレーンの吊り上げ用フック11に連
結し、下端側を補助吊り具6に連結する。このとき補助
緊張体12は、主緊張体7,7で製品1を吊り上げた際
に負荷のかからない程度の長さにしておく。次いで、ク
レーンで製品1を吊り上げる。このとき補助緊張体12
には負荷がかかっていないので、図3に示すように底板
3は傾斜した状態となる。なお、主緊張体7がたて壁2
の上端角部19に当たる場合には、角材(図示せず)な
どをかって主緊張体7の損傷を防ぐようにする。次い
で、チェーンブロック13のレバー17を操作して、チ
ェーン18の長さ、従って補助緊張体12の長さを短く
していき、底板3が据付け基礎面と平行となる所定の傾
斜角(通常は水平)になるようにする(図4)。この状
態で、クレーンで所定の据付け位置の上方まで運び、擁
壁1を据付ける。Next, the operation will be described. First, the main hanging members 5,5 are attached to the drain holes 4,4. Next, the lower ends of the main tension members 7, 7 are connected to the main suspenders 5, 5, and the upper end is connected to the lifting hook 11 of the crane. On the other hand, the upper end side of the auxiliary tension member 12 is connected to the lifting hook 11 of the crane, and the lower end side is connected to the auxiliary lifting device 6. At this time, the auxiliary tension member 12 is set to a length that does not apply a load when the product 1 is lifted by the main tension members 7,7. Next, the product 1 is lifted by a crane. At this time, the auxiliary tension body 12
Since no load is applied to the bottom plate 3, the bottom plate 3 is inclined as shown in FIG. In addition, the main tension member 7 is set up on the wall 2
In the case of hitting the upper end corner portion 19, the main tension member 7 is prevented from being damaged by using a square member (not shown) or the like. Then, the lever 17 of the chain block 13 is operated to reduce the length of the chain 18, and thus the length of the auxiliary tension member 12, so that the bottom plate 3 has a predetermined inclination angle (usually parallel to the installation base plane). (Horizontal) (FIG. 4). In this state, the crane is carried by a crane to a position above a predetermined installation position, and the retaining wall 1 is installed.
【0017】据付け作業終了後は、各緊張体7,7,1
2を緩め、主吊り具5及び補助吊り具6からそれぞれの
緊張体7,7,12の下端を取外し、主吊り具5を水抜
き孔4から取外す。After the completion of the installation work, the tension members 7, 7, 1
2 is loosened, the lower ends of the respective tension members 7, 7, 12 are removed from the main suspension 5 and the auxiliary suspension 6, and the main suspension 5 is removed from the drain hole 4.
【0018】[0018]
【発明の効果】以上説明したように本発明のコンクリー
ト製品の吊り装置によれば、たて壁と底板とを一体に有
するコンクリート製品を吊り上げる主緊張体とは別に底
板の傾斜角度を調節する補助緊張体を設け、該補助緊張
体の長さを調節する長さ調節装置を設けたので、補助緊
張体に負荷がかかった状態であっても、コンクリート製
品の底板の傾斜角度を調節することができる等の効果を
奏する。長さ調節装置としてチェーンブロックを用いれ
ば、小さな力で簡単に補助緊張体の長さ調節ができる。As described above, according to the concrete product suspending device of the present invention, the auxiliary member for adjusting the inclination angle of the bottom plate separately from the main tensioning member for lifting the concrete product having the vertical wall and the bottom plate integrally. Since the tension member is provided and the length adjusting device for adjusting the length of the auxiliary tension member is provided, even when the load is applied to the auxiliary tension member, the inclination angle of the bottom plate of the concrete product can be adjusted. It has effects such as being able to do. If a chain block is used as the length adjusting device, the length of the auxiliary tensioning member can be easily adjusted with a small force.
【図1】本発明の実施例の一例を示すL型製品の吊り装
置の斜視図。FIG. 1 is a perspective view of an apparatus for suspending an L-shaped product, showing an example of an embodiment of the present invention.
【図2】補助吊り具部の拡大断面図。FIG. 2 is an enlarged cross-sectional view of an auxiliary hanging part.
【図3】補助緊張体に負荷がかかっていない状態の側面
図。FIG. 3 is a side view showing a state where a load is not applied to the auxiliary tension member.
【図4】補助緊張体の長さを調節して底板を水平状態に
したときの側面図。FIG. 4 is a side view when the length of the auxiliary tension member is adjusted to make the bottom plate horizontal.
【図5】従来のコンクリート製品の吊り装置の説明図。FIG. 5 is an explanatory view of a conventional concrete product suspending device.
【図6】図5における中央吊り具の拡大断面図。FIG. 6 is an enlarged cross-sectional view of the center suspender in FIG. 5;
1 コンクリート製品(擁壁用L型製品) 2 たて壁 3 底板 4 水抜き孔 5 主吊り具 6 補助吊り具 7 主緊張体 11 吊り上げ用フック 12 補助緊張体 13 長さ調節装置(チェーンブロック) 17 チェーン 18 レバー DESCRIPTION OF SYMBOLS 1 Concrete product (L-shaped product for retaining walls) 2 Vertical wall 3 Bottom plate 4 Drain hole 5 Main suspension 6 Auxiliary suspension 7 Main tension body 11 Lifting hook 12 Auxiliary tension body 13 Length adjustment device (chain block) 17 Chain 18 Lever
Claims (3)
ート製品を設け、該コンクリート製品のたて壁の少なく
とも1箇所に主吊り具を取付け、前記コンクリート製品
の底板に補助吊り具を取付け、前記主吊り具に主緊張体
の一端を連結し他端を吊り上げ用フック側に連結し、前
記吊り上げ用フック側と前記補助吊り具とを連結する補
助緊張体を設け、該補助緊張体の長さを調節する長さ調
節装置を設けたことを特徴とするコンクリート製品の吊
り装置。1. A concrete product in which a vertical wall and a bottom plate are integrally formed, a main suspension is attached to at least one portion of the vertical wall of the concrete product, and an auxiliary suspension is attached to a bottom plate of the concrete product. One end of the main tension member is connected to the main hanging member, the other end is connected to the lifting hook side, and an auxiliary tension member for connecting the lifting hook side and the auxiliary hanging member is provided. A concrete product suspending device comprising a length adjusting device for adjusting a length.
主吊り具は、たて壁に設けた水抜き孔に取外し可能に取
付けられる請求項1に記載のコンクリート製品の吊り装
置。2. The concrete product suspending device according to claim 1, wherein the main suspending device attached to the vertical wall of the concrete product is detachably attached to a drain hole provided in the vertical wall.
ある請求項1又は2に記載のコンクリート製品の吊り装
置。3. The apparatus according to claim 1, wherein the length adjusting device is a chain block.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22759396A JP2799991B2 (en) | 1996-08-09 | 1996-08-09 | Equipment for lifting concrete products |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22759396A JP2799991B2 (en) | 1996-08-09 | 1996-08-09 | Equipment for lifting concrete products |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1053388A JPH1053388A (en) | 1998-02-24 |
JP2799991B2 true JP2799991B2 (en) | 1998-09-21 |
Family
ID=16863361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22759396A Expired - Fee Related JP2799991B2 (en) | 1996-08-09 | 1996-08-09 | Equipment for lifting concrete products |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2799991B2 (en) |
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CN102556850A (en) * | 2012-02-21 | 2012-07-11 | 神华集团有限责任公司 | Hoisting adjusting device and component hoisting method |
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-
1996
- 1996-08-09 JP JP22759396A patent/JP2799991B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH1053388A (en) | 1998-02-24 |
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