JP4053153B2 - jack - Google Patents

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Publication number
JP4053153B2
JP4053153B2 JP25967698A JP25967698A JP4053153B2 JP 4053153 B2 JP4053153 B2 JP 4053153B2 JP 25967698 A JP25967698 A JP 25967698A JP 25967698 A JP25967698 A JP 25967698A JP 4053153 B2 JP4053153 B2 JP 4053153B2
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Japan
Prior art keywords
nut
screw rod
mounting
outer periphery
height
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JP25967698A
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Japanese (ja)
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JP2000087552A (en
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辰雄 小野
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辰雄 小野
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Description

【0001】
【発明の属する技術分野】
本発明は枠組足場の下端に設けられて当該枠組足場を支えながら高さ調整をするねじ式ジャッキ、あるいは支保工の下端と上端に設けられて当該支保工を支えながら高さ調整したり、支保工が支える大引きの支持と高さ調整を行なうねじ式ジャッキに関する。
【0002】
【従来の技術】
一般に、建築用,土木工事用枠組足場では、この枠組足場の下端にねじ式ジャッキを設けて枠組足場を構成するパイプ支柱を支えながらその高さを調整している。
【0003】
同じく建築,土木工事現場では、上記の重量物を根太材,大引き等を介して支保工が支えており、この支保工の上端と下端にはねじ式ジャッキが設けられ、上方のジャッキが大引きを支えながら大引きの高さを調整し、下方のジャッキが支保工を構成するパイプ支柱を支えながら、その高さを調整している。
【0004】
例えば上記従来のねじ式ジャッキ1は、図6に示すように、ベースプレート2と、ベースプレート2の中央に起立するねじ桿3と、ねじ桿3の外周に上下移動自在に螺着したナット4と、ナット4の外周に設けた回転操作用ハンドル5とからなるものである。
【0005】
上記ジャッキ1を例えば枠組足場又は支保工を構成する支柱6の下端に設置する場合には、地上の土台7にベースプレート2を止め具8で固定し、ねじ桿3の上部に挿入された支柱6の下端をナット4の上面で担持させ、ナット4をハンドル5で回動することにより支柱6の高さを調整させている。
【0006】
他方、枠組足場や支保工では上方からの荷重が各支柱6に作用し、この荷重によって支柱6が単独で、又は全体が横方向に滑動したり、偏荷重で変形したりするおそれがあるので、これらの不具合を防止するために、支柱6,6同志を横架材9で支えている。
【0007】
横架材9を支柱6,6間に架設する場合には、各支柱6,6の下部にクランプ10を取付け、このクランプ10を介して横方向に横架材9を取付けている。
【0008】
【発明が解決しょうとする課題】
上記従来のジャッキは機能上欠陥がある分けではないが、次のような改善が望まれている。
【0009】
第1に、枠組足場や支保工を構成する支柱6の動きを規制して安定化させるには、横架材9の架設位置は出来るだけ荷重受点である地上近くが好ましく、従って横架材9は支柱6の下部より更に下方のねじ桿3の下方に取付けた方が好ましい。
【0010】
しかし、クランプ10の径は、普通支柱6の外径に対応して成形されているのが一般的であってねじ桿3の外径には適合していないため、このクランプ10を介して横架材9をねじ桿3に取付けることができず、どうしても図6のように支柱6に横架材9を取付けざるを得ないのが現状であって、その改善が望まれている。
【0011】
第2に、支柱6にクランプ10を介して横架材9を取付ける場合においても、クランプ10の横架材9の取付部は支柱6の外面より外方に突出しているから、支柱6の軸芯と横架材9の軸芯とが直交せず、偏荷重が作用した時支柱6や横架材9がゆがんだり、変形するおそれがあり、その改善が望まれている。
【0012】
そこで、本発明の目的は、横架材をねじ桿の任意の位置に架設でき、しかもこの横架材の軸芯とねじ桿及びねじ桿に挿入した支柱の軸芯とを直交できるようにしたジャッキを提供することである。
【0013】
【課題を解決するための手段】
上記の目的を達成するため、本発明一つの手段は、ねじ桿と、ねじ桿の下部外周に上下移動自在に螺着した横架材取付用のナットと、上記ナットの外周に設けた取付部材と、ねじ桿の上部外周に上記ナットの上方において当該ナットと対向しながら上下移動自在に螺着した位置決めナットとからなり、上記ナットは当該ナットの上下動に伴って上記取付部に結合した横架材の高さを調整し、上記位置決めナットは当該位置決めナットの上下動に伴って上記ねじ桿に対してこのねじ桿の上端部に差し込んだパイプ支柱の高さを調整することを特徴とする。
同じく、他の手段は、ねじ桿と、ねじ桿の上部外周に上下移動自在に螺着した横架材取付用のナットと、上記ナットの外周に設けた取付部材と、ねじ桿の上部外周に上記ナットの下方において当該ナットと対向しながら上下移動自在に螺着した位置決めナットとからなり、上記ナットは当該ナットの上下動に伴って上記取付部に結合した横架材の高さを調整し、上記位置決めナットは当該位置決めナットの上下動に伴って上記ねじ桿の下端部に差し込んだパイプ支柱に対して上記 ねじ桿の高さを調整することを特徴とする。
【0014】
この場合、取付部材が円周方向に沿って多数の取付孔又は環状の蟻溝を形成した円盤状フランジからなるのが好ましい。
【0015】
同じく、取付部材が円周方向に沿って隔設された複数のソケットからなるものであってもよい。
【0016】
更に、取付部材の外周に水平方向に向けてハンドルが設けられているのが好ましい。
【0017】
上記の場合、ねじ桿の下端にベースプレートが設けられ、ねじ桿の上部に当該ねじ桿の上方に挿入されたパイプ支柱の高さを調整する位置決めナットが上下移動自在に螺着されているのが好ましい。
【0018】
同じく、ねじ桿の上端に大引き受けを設け、ねじ桿の下部に当該ねじ桿の下方に挿入されたパイプ支柱に対するねじ桿の高さを調整する位置決めナットが上下移動自在に螺着されているようにしてもよい。
【0019】
【発明の実施の形態】
以下、本発明の実施の形態を図にもとづいて説明する。
【0020】
図1に示すジャッキは、ねじ桿12と、ねじ桿12の下部外周に上下移動自在に螺着した横架材取付用のナット13と、上記ナット13の外周に設けた取付部材14と、ねじ桿12の上部外周に上記ナット13の上方において当該ナット13と対向しながら上下移動自在に螺着した位置決めナット25とからなり、上記ナット 13 は当該ナット 13 の上下動に伴って上記取付部 14 に結合した横架材 18 の高さを調整し、上記位置決めナット 25 は当該位置決めナット 25 の上下動に伴って上記ねじ桿 12 に対してこのねじ桿 12 の上端部に差し込んだパイプ支柱15の高さを調整するものである。
同じく、図2に示すジャッキは、ねじ桿12と、ねじ桿12の上部外周に上下移動自在に螺着した横架材取付用のナット13と、上記ナット13の外周に設けた取付部材14と、ねじ桿12の上部外周に上記ナット13の下方において当該ナット13と対向しながら上下移動自在に螺着した位置決めナット25とからなり、上記ナットは当該ナット13の上下動に伴って上記取付部14に結合した横架材19の高さを調整し、上記位置決めナット25は当該位置決めナット25の上下動に伴って上記ねじ桿12の下端部に差し込んだパイプ支柱15に対して上記 ねじ桿12の高さを調整するものである。
【0021】
図1,図2に示すジャッキ11,21はねじ桿12と、ねじ桿12に上下移動自在に螺合したナット13と、ナット13の外周に設けた多孔の円盤状フランジからなる取付部材14とから構成されている点で両者は共通している。
【0022】
図1に示すジャッキ11は図3に示すように支保工Aの下端に配設され、図2に示すジャッキ21は同じく図3に示す支保工Aの上端に配設される。
【0023】
図1のジャッキ11は、例えば枠組足場を構成する支柱その他同様の構造物の下端に設けてもよい。
【0024】
図3に示す支保工Aは多数の単一パイプを上下方向に継足した複数の支柱15,…と、各支柱15同志を結合した横材たる枠体16,17とで構成され、各支柱15の下端を下方のジャッキ11に高さ調整自在に差し込み、同じく各支柱15の上端に上方のジャッキ21を高さ調整自在に差し込んでいる。
【0025】
隣接する下方のジャッキ11同志には、パイプ等からなる横架材18を架設して補強することにより各支柱15に対する滑りを防止し、偏荷重を受けても各支柱15が変形したり、ゆがんだりするのを防止している。
【0026】
上方の各ジャッキ21同志には同じく水平材もしくは斜材たるパイプからなる横架材19が架設されて、各支柱15を補強している。
【0027】
上方のジャッキ21は、上端に大引き受け20を備え、この大引き受け20が大引き21を支え、構造物22からの荷重を大引き受け20を介して担持している。
【0028】
図1に示すジャッキ11は、ねじ桿12の下端にベースプレート23を設け、ねじ桿12の上部にはハンドル24を備えた位置決めナット25を螺合させている。
【0029】
ベースプレート23は図3に示すように地上又は地上に設けた土台上に固定される。ねじ桿12の上部には図3に示す支柱15の下部が挿入され、ハンドル24の操作でナット25を回動して上下方向に移動することによりナッ25の上面に当接する支柱15の高さを調整してその位置を規制している。
【0030】
取付部材14は図4に示す他の実施の形態と同じように、円盤状のフランジ14と、フランジ14に円周方向に沿って形成した多数の取付孔27とで構成されている。図1のフランジ14にはハンドルが付いていないが、図4の他の実施の形態ではフランジ26の外周に水平方向に向けてハンドル28を設け、このハンドル28を介してフランジ26を回動させながらフランジ28を任意の高さまで上下動させるものである。
【0031】
図1のフランジ26の場合は直接このフランジ26を回動させて高さ調整するものである。
【0032】
横架材18は端部に二又状のシュー29と、このシュー29の縦方向の孔に差し込まれた楔30とを備え、シュー29をフランジ26に差し込んだ後にシュー29の孔とフランジ26の取付孔27とに楔30を差し込むことによりフランジ26に横架材18を着脱自在に連結している。
【0033】
図2に示す他の実施の形態に係るジャッキ21はすでに述べたように、ねじ桿12の上端に二又状の大引き受け20を設け、ねじ桿12の下部にハンドル24を備えた位置決めナット25が上下移動自在に螺合されている。
【0034】
ねじ桿12の下部は、図3に示すように支柱15の上端に挿入され、ナット25の下面を支柱15の上端に当接すると共に位置決めナット25を上下動させることによりねじ桿12の高さ、即ちジャッキ21の高さを調整して位置決めを行うようになっている。
【0035】
斜材たる横架材19の端部には、シュー29の取付部29aがピン31を介して揺動自在に結合され、シュー29はフランジ26に着脱自在に取付けられている。フランジ26からなる取付部材14とシュー29と楔30の構造は図4に示すものと同じである。フランジ26には、図4と同じくハンドル28を設けてもよい。
【0036】
上記図1,図2,図4のフランジ26は多数の取付孔27を形成しているが、この取付孔27に代えて環状の蟻溝を設けてもよい。この場合には横架材18,19の端部は蟻溝に引掛ける爪等が使用される。
【0037】
図5は本発明の他の実施の形態に係り、これは取付部材14としてソケット32が使用されている。
【0038】
即ち、ナット13の外周に切欠き33を備えて筒状のソケット32を円周方向に沿って複数、例えば4つ取付けたものである。この場合には横架材18の端部にはソケット32内に着脱自在に挿入される楔状の爪その他の引掛部材34が設けられる。
【0039】
その他の構造,作用は図1,図2,図4のものと同じである。
【0040】
【発明の効果】
本発明によれば、次の効果がある。
【0041】
1 請求項1の発明によれば、ねじ桿に上方の位置決めナットと下方の横架材取付用のナットとを設けているから上方の位置決めナットでねじ桿に対してパイプ支柱の高さを調整でき、下方のナットで取付部材を介して横架材の高さを調整できる。
さらに、ナットに取付部材が設けられているから、取付部材を介して横架材が取付けできる。
この為、ナットを上下動させることにより横架材の取付位置が任意に調整され、ねじ桿の端部近く、いいかえればジャッキ自体が担持する構造物の荷重受け点近くに横架材を架設でき、これによりねじ桿に差し込んだパイプ支柱の滑り、変形、ねじれの発生がより確実に防止され、支柱により組付けられた枠組足場や支保工の安定化が図れる。
【0042】
2 請求項2の発明によれば、ねじ桿に下方の位置決めナットと上方の横架材取付用のナットとを設けているから下方の位置決めナットでねじ桿に差し込んだパイプ支柱に対して、ねじ桿の高さを調整でき、上方のナットで取付部材を介して横架材の高さを調整できる。
さらに、各請求項の発明によれば、横架材が取付部材を介しナットに結合できるから横架材の軸芯がナットの軸芯、即ちねじ桿とねじ桿に差し込んだパイプ支柱の軸芯と直交するから組付けたパイプ支柱と横架材のバランスが良く,枠組足場,支保工の安定化が図れる。
【図面の簡単な説明】
【図1】本発明の一実施の形態に係るジャッキの正面図である。
【図2】他の実施の形態に係るジャッキの正面図である。
【図3】図1,図2のジャッキを使用した支保工の正面図である。
【図4】他の実施の形態に係るジャッキの斜視図である。
【図5】他の実施の形態に係るジャッキの斜視図である。
【図6】従来のジャッキの正面図である。
【図7】図6の平面図である。
【符号の説明】
12 ねじ桿
13 ナット
14 取付部材
15 支柱
20 大引き受け
23 ベースプレート
25 位置決めナット
26 フランジ
27 取付孔
28 ハンドル
32 ソケット
[0001]
BACKGROUND OF THE INVENTION
The present invention is a screw-type jack that is provided at the lower end of the frame scaffold and adjusts the height while supporting the frame scaffold, or is provided at the lower and upper ends of the support work to adjust the height while supporting the support work. The present invention relates to a screw-type jack that supports a large pull supported by a worker and performs height adjustment.
[0002]
[Prior art]
Generally, in a framework scaffold for construction and civil engineering, a screw-type jack is provided at the lower end of the framework scaffold to adjust its height while supporting pipe struts constituting the framework scaffold.
[0003]
Similarly, at construction and civil engineering construction sites, the above heavy loads are supported by joists, large pulls, etc., and support jacks are provided at the upper and lower ends of these supports, and the upper jacks are large. The height of the large pull is adjusted while supporting the pull, and the lower jack adjusts the height while supporting the pipe strut that constitutes the support work.
[0004]
For example, as shown in FIG. 6, the conventional screw jack 1 includes a base plate 2, a screw rod 3 standing at the center of the base plate 2, a nut 4 screwed to the outer periphery of the screw rod 3 so as to be vertically movable, The rotation operation handle 5 is provided on the outer periphery of the nut 4.
[0005]
When the jack 1 is installed at, for example, the lower end of a column 6 constituting a frame scaffold or a supporting work, the base plate 2 is fixed to the ground base 7 with a stopper 8 and the column 6 inserted into the upper portion of the screw rod 3 is inserted. Is supported by the upper surface of the nut 4, and the height of the column 6 is adjusted by rotating the nut 4 with the handle 5.
[0006]
On the other hand, in the frame scaffolding and the supporting work, a load from above acts on each column 6, and this column may cause the column 6 to be singly or entirely slid in the lateral direction or deformed due to an offset load. In order to prevent these problems, the columns 6 and 6 are supported by the horizontal member 9.
[0007]
When the horizontal member 9 is installed between the columns 6 and 6, the clamps 10 are attached to the lower portions of the columns 6 and 6, and the horizontal members 9 are attached in the horizontal direction via the clamps 10.
[0008]
[Problems to be solved by the invention]
The conventional jacks are not classified as functionally defective, but the following improvements are desired.
[0009]
First, in order to regulate and stabilize the movement of the support pillars 6 constituting the frame scaffolding and the supporting work, the position of the horizontal member 9 is preferably as close to the ground as the load receiving point as much as possible. It is preferable that 9 is attached below the screw rod 3 below the lower portion of the support 6.
[0010]
However, since the diameter of the clamp 10 is generally formed corresponding to the outer diameter of the support column 6 and is not adapted to the outer diameter of the screw rod 3, The mounting member 9 cannot be attached to the screw rod 3, and the current situation is that the horizontal member 9 must be attached to the support column 6 as shown in FIG. 6, and the improvement is desired.
[0011]
Secondly, even when the horizontal member 9 is attached to the support column 6 via the clamp 10, the mounting portion of the horizontal member 9 of the clamp 10 protrudes outward from the outer surface of the support column 6. Since the core and the shaft core of the horizontal member 9 are not orthogonal to each other, the column 6 and the horizontal member 9 may be distorted or deformed when an unbalanced load is applied.
[0012]
Therefore, an object of the present invention is to allow the horizontal member to be installed at an arbitrary position of the screw rod, and to make the axis of the horizontal member and the axis of the column inserted into the screw rod and the screw rod perpendicular to each other. Is to provide a jack.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, one means of the present invention includes a screw rod, a nut for mounting a horizontal member screwed to the outer periphery of the lower portion of the screw rod, and a mounting member provided on the outer periphery of the nut. And a positioning nut that is screwed to the upper outer periphery of the screw rod so as to be movable up and down while facing the nut above the nut, and the nut is coupled to the mounting portion as the nut moves up and down. The height of the frame member is adjusted, and the positioning nut adjusts the height of the pipe strut inserted into the upper end portion of the screw rod with respect to the screw rod with the vertical movement of the positioning nut. .
Similarly, other means include a screw rod, a nut for mounting a horizontal member screwed to the upper outer periphery of the screw rod, a mounting member provided on the outer periphery of the nut, and an upper outer periphery of the screw rod. A positioning nut that is screwed so as to be movable up and down while facing the nut below the nut, and the nut adjusts the height of the horizontal member coupled to the mounting portion as the nut moves up and down. The positioning nut is located above the pipe strut inserted into the lower end of the screw rod as the positioning nut moves up and down. It is characterized by adjusting the height of the screw rod.
[0014]
In this case, it is preferable that the mounting member is composed of a disk-shaped flange in which a large number of mounting holes or annular dovetails are formed along the circumferential direction.
[0015]
Similarly, the attachment member may be composed of a plurality of sockets spaced along the circumferential direction.
[0016]
Furthermore, it is preferable that a handle is provided on the outer periphery of the mounting member in the horizontal direction.
[0017]
In the above case, a base plate is provided at the lower end of the screw rod, and a positioning nut for adjusting the height of the pipe column inserted above the screw rod is screwed to the upper portion of the screw rod so as to be movable up and down. preferable.
[0018]
Similarly, a large take-over is provided at the upper end of the screw rod, and a positioning nut for adjusting the height of the screw rod with respect to the pipe column inserted below the screw rod is screwed to the lower portion of the screw rod so as to be movable up and down. It may be.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
The jack shown in FIG. 1 includes a screw rod 12, a nut 13 for attaching a horizontal member that is screwed to the outer periphery of the lower portion of the screw rod 12, a mounting member 14 provided on the outer periphery of the nut 13, a screw the upper outer circumference of the rod 12 in the above the nut 13 consists of the nut 13 and the counter while vertically movably screwed to the positioning nut 25. the nut 13 the mounting portion 14 with the vertical movement of the nut 13 bonded to the height adjusting of the horizontal member 18, the positioning nut 25 of the pipe column 15 which is inserted in the upper end of the screw rod 12 with respect to the screw rod 12 with the vertical movement of the positioning nut 25 The height is adjusted.
Similarly, the jack shown in FIG. 2 includes a screw rod 12, a nut 13 for attaching a horizontal member that is screwed to the outer periphery of the upper portion of the screw rod 12, and a mounting member 14 provided on the outer periphery of the nut 13. And a positioning nut 25 screwed to the upper outer periphery of the screw rod 12 so as to be vertically movable while facing the nut 13 below the nut 13, and the nut is attached to the mounting portion as the nut 13 moves up and down. 14, the height of the horizontal member 19 coupled to 14 is adjusted, and the positioning nut 25 is moved to the pipe column 15 inserted into the lower end portion of the screw rod 12 with the vertical movement of the positioning nut 25. The height of the screw rod 12 is adjusted.
[0021]
The jacks 11 and 21 shown in FIGS. 1 and 2 include a screw rod 12, a nut 13 screwed to the screw rod 12 so as to be movable up and down, and an attachment member 14 formed of a porous disc-shaped flange provided on the outer periphery of the nut 13. Both are common in that they are composed of
[0022]
The jack 11 shown in FIG. 1 is arranged at the lower end of the support A as shown in FIG. 3, and the jack 21 shown in FIG. 2 is arranged at the upper end of the support A shown in FIG.
[0023]
The jack 11 of FIG. 1 may be provided, for example, at the lower end of a pillar or other similar structure constituting the frame scaffold.
[0024]
The support A shown in FIG. 3 is composed of a plurality of support columns 15,..., Each having a large number of single pipes connected in the vertical direction, and frame members 16, 17 that are cross members connecting the support columns 15. The lower end of 15 is inserted into the lower jack 11 so that the height can be adjusted. Similarly, the upper jack 21 is inserted into the upper end of each column 15 so that the height can be adjusted.
[0025]
Adjacent lower jacks 11 are provided with a horizontal member 18 made of a pipe or the like to reinforce and prevent slipping with respect to each column 15, and each column 15 can be deformed even if it receives an unbalanced load. It prevents it from dripping.
[0026]
A horizontal member 19 made of a pipe that is a horizontal member or a diagonal member is also installed between the upper jacks 21 to reinforce each column 15.
[0027]
The upper jack 21 is provided with a large pull receiving 20 at the upper end, and the large pull receiving 20 supports the large pull 21 and carries a load from the structure 22 via the large pull receiving 20.
[0028]
In the jack 11 shown in FIG. 1, a base plate 23 is provided at the lower end of the screw rod 12, and a positioning nut 25 having a handle 24 is screwed onto the upper portion of the screw rod 12.
[0029]
As shown in FIG. 3, the base plate 23 is fixed on the ground or on a base provided on the ground. The lower part of the support column 15 shown in FIG. 3 is inserted into the upper part of the screw rod 12, and the height of the support column 15 that contacts the upper surface of the nut 25 by rotating the nut 25 in the vertical direction by operating the handle 24. To adjust its position.
[0030]
As in the other embodiments shown in FIG. 4, the mounting member 14 includes a disk-shaped flange 14 and a large number of mounting holes 27 formed in the flange 14 along the circumferential direction. The flange 14 of FIG. 1 does not have a handle. However, in another embodiment of FIG. However, the flange 28 is moved up and down to an arbitrary height.
[0031]
In the case of the flange 26 in FIG. 1, the height is adjusted by directly rotating the flange 26.
[0032]
The horizontal member 18 includes a bifurcated shoe 29 at an end thereof and a wedge 30 inserted into a longitudinal hole of the shoe 29. After the shoe 29 is inserted into the flange 26, the hole of the shoe 29 and the flange 26 are provided. The horizontal member 18 is detachably connected to the flange 26 by inserting a wedge 30 into the mounting hole 27.
[0033]
As described above, the jack 21 according to another embodiment shown in FIG. 2 is provided with the large fork 20 in the upper end of the screw rod 12 and a positioning nut 25 having a handle 24 at the lower portion of the screw rod 12. Is screwed up and down.
[0034]
The lower part of the screw rod 12 is inserted into the upper end of the support column 15 as shown in FIG. That is, positioning is performed by adjusting the height of the jack 21.
[0035]
An attachment portion 29a of a shoe 29 is slidably coupled to an end portion of the horizontal member 19 which is an oblique member via a pin 31, and the shoe 29 is detachably attached to the flange 26. The structure of the attachment member 14 comprising the flange 26, the shoe 29 and the wedge 30 is the same as that shown in FIG. A handle 28 may be provided on the flange 26 as in FIG.
[0036]
Although the flange 26 of FIGS. 1, 2 and 4 has a large number of mounting holes 27, an annular dovetail groove may be provided in place of the mounting holes 27. In this case, a claw or the like hooked on the dovetail is used at the ends of the horizontal members 18 and 19.
[0037]
FIG. 5 relates to another embodiment of the present invention, in which a socket 32 is used as the mounting member 14.
[0038]
That is, the nut 13 is provided with a notch 33 on the outer periphery thereof, and a plurality of, for example, four cylindrical sockets 32 are attached along the circumferential direction. In this case, a wedge-shaped claw or other hooking member 34 that is detachably inserted into the socket 32 is provided at the end of the horizontal member 18.
[0039]
Other structures and operations are the same as those in FIGS.
[0040]
【The invention's effect】
The present invention has the following effects.
[0041]
1 According to the invention of claim 1, since the upper positioning nut and the lower mounting nut are provided on the screw rod, the height of the pipe column is adjusted with respect to the screw rod with the upper positioning nut. It is possible to adjust the height of the horizontal member through the mounting member with the lower nut.
Furthermore, since the attachment member is provided on the nut, the horizontal member can be attached via the attachment member.
For this reason, the mounting position of the horizontal member can be adjusted arbitrarily by moving the nut up and down, and the horizontal member can be installed near the end of the screw rod, in other words, near the load receiving point of the structure carried by the jack itself. As a result, slipping, deformation, and twisting of the pipe struts inserted into the screw rods can be prevented more reliably, and the frame scaffolding and supporting work assembled by the struts can be stabilized.
[0042]
(2) According to the invention of claim 2, since the lower positioning nut and the upper horizontal mounting nut are provided on the screw rod, the screw is attached to the pipe strut inserted into the screw rod with the lower positioning nut. The height of the eaves can be adjusted, and the height of the horizontal member can be adjusted via the mounting member with the upper nut.
Furthermore, according to the invention of each claim , since the horizontal member can be coupled to the nut via the mounting member, the axis of the horizontal member is the axis of the nut, that is, the axis of the pipe column inserted into the screw rod and screw rod. Since the pipe struts and horizontal members are well-balanced, the frame scaffolding and support work can be stabilized.
[Brief description of the drawings]
FIG. 1 is a front view of a jack according to an embodiment of the present invention.
FIG. 2 is a front view of a jack according to another embodiment.
FIG. 3 is a front view of a support using the jack of FIGS.
FIG. 4 is a perspective view of a jack according to another embodiment.
FIG. 5 is a perspective view of a jack according to another embodiment.
FIG. 6 is a front view of a conventional jack.
7 is a plan view of FIG. 6. FIG.
[Explanation of symbols]
12 Screw rod 13 Nut 14 Mounting member 15 Strut 20 Large receiver 23 Base plate 25 Positioning nut 26 Flange 27 Mounting hole 28 Handle 32 Socket

Claims (6)

ねじ桿と、ねじ桿の下部外周に上下移動自在に螺着した横架材取付用のナットと、上記ナットの外周に設けた取付部材と、ねじ桿の上部外周に上記ナットの上方において当該ナットと対向しながら上下移動自在に螺着した位置決めナットとからなり、上記ナットは当該ナットの上下動に伴って上記取付部に結合した横架材の高さを調整し、上記位置決めナットは当該位置決めナットの上下動に伴って上記ねじ桿に対してこのねじ桿の上端部に差し込んだ支柱の高さを調整することを特徴とするジャッキ。 A screw rod, a nut for mounting a horizontal member screwed to the outer periphery of the lower portion of the screw rod, a mounting member provided on the outer periphery of the nut, and the nut on the upper outer periphery of the screw rod above the nut A positioning nut that is screwed up and down while being opposed to the nut, and the nut adjusts the height of the horizontal member coupled to the mounting portion with the vertical movement of the nut, and the positioning nut A jack characterized by adjusting the height of a column inserted into the upper end of the screw rod with respect to the screw rod as the nut moves up and down . ねじ桿と、ねじ桿の上部外周に上下移動自在に螺着した横架材取付用のナットと、上記ナットの外周に設けた取付部材と、ねじ桿の上部外周に上記ナットの下方において当該ナットと対向しながら上下移動自在に螺着した位置決めナットとからなり、上記ナットは当該ナットの上下動に伴って上記取付部に結合した横架材の高さを調整し、上記位置決めナットは当該位置決めナットの上下動に伴って上記ねじ桿の下端部に差し込んだ支柱に対して上記 ねじ桿の高さを調整することを特徴とするジャッキ。 A screw 桿, a nut for mounting a horizontal member screwed to the upper outer periphery of the screw 桿, a mounting member provided on the outer periphery of the nut, and the nut on the upper outer periphery of the screw に お い て below the nut A positioning nut that is screwed up and down while being opposed to the nut, and the nut adjusts the height of the horizontal member coupled to the mounting portion with the vertical movement of the nut, and the positioning nut With respect to the column inserted into the lower end of the screw rod along with the vertical movement of the nut A jack characterized by adjusting the height of the screw rod . 取付部材が円周方向に沿って多数の取付孔又は環状の蟻溝を形成した円盤状フランジからなる請求項1または2のジャッキ。The jack according to claim 1 or 2, wherein the mounting member comprises a disc-shaped flange having a large number of mounting holes or annular dovetails formed along the circumferential direction. 取付部材が円周方向に沿って隔設された複数のソケットからなる請求項1または2のジャッキ。 The jack according to claim 1 or 2, wherein the mounting member includes a plurality of sockets spaced along the circumferential direction . 取付部材の外周に水平方向に向けてハンドルが設けられている請求項1、2又は3のジャッキ。 The jack according to claim 1, 2 or 3, wherein a handle is provided on an outer periphery of the mounting member in a horizontal direction . ねじ桿の上端に大引き受けを設けている請求項2、3、4又は5のジャッキ。 The jack according to claim 2, 3, 4 or 5, wherein a large catch is provided at an upper end of the screw rod .
JP25967698A 1998-09-14 1998-09-14 jack Expired - Fee Related JP4053153B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25967698A JP4053153B2 (en) 1998-09-14 1998-09-14 jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25967698A JP4053153B2 (en) 1998-09-14 1998-09-14 jack

Publications (2)

Publication Number Publication Date
JP2000087552A JP2000087552A (en) 2000-03-28
JP4053153B2 true JP4053153B2 (en) 2008-02-27

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ID=17337368

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Country Link
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140837B (en) * 2011-03-01 2012-07-04 梁苏珊 Ring-lock adjustable pole support and ring-lock adjustable pole scaffold
TWM454435U (en) * 2012-11-23 2013-06-01 Yukio Yamane Scaffold
CN103643742B (en) * 2013-11-22 2015-12-02 周剑辉 The stable support body of a kind of combined type component and composition thereof
CN105113782B (en) * 2015-09-16 2017-06-16 朱新伟 Leading screw cross snap close piece and the scaffold jacking component using the fastener
CN114109017A (en) * 2021-11-17 2022-03-01 昆山市经协建筑装璜有限责任公司 Tray buckle frame lintel support with high application efficiency

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