JPH0425879Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention can be used at construction sites, repair sites, etc.
This invention relates to a scaffold attachment device for hanging and attaching a scaffold to a flange of H-type steel, I-type steel, etc.

[Problems to be solved by conventional techniques and ideas] Conventionally, various scaffolding installation devices that are suspended from H-beams or I-beams have been used at construction sites and repair sites. An example of this is shown in FIG. This conventional example is
The mounting piece 33 is attached to the bottom of the flange 32 of the H-shaped steel 31 by welding, and this mounting piece 3
A pair of suspender pipes 35, 3 in a pair of holes 3
5 with bolts and nuts, and connect the girder pipe 36 and handrail pipe 3 to the suspender pipes 35, 35.
7 and 37 are assembled. However, in the conventional example shown in FIG. 4, it is necessary to attach attachment pieces 33 to the bottom surface of the flange 32 of the H-shaped steel 31 at predetermined intervals by welding in advance. It is necessary to remove it, finish the removal mark flat and paint it.

Further, in the conventional example shown in FIG. 5, a pair of suspender pipes 38, 38 intersect in an X-shape, and this intersection is used as a pivot point, while an H-shaped steel is installed at the upper ends of these pair of suspender pipes 38, 38. A clamping fitting 39 that clamps the end faces of the flanges 32 and 32 of 31 and a pressing part 40 consisting of a bolt are provided, and the mounting piece is
Suspender pipe 38 without welding to shaped steel,
38 can be suspended from the flanges 32, 32 of the H-shaped steel 31. However, in the conventional example shown in FIG. 5, when weight is applied to one of the girder pipes 36 pivoted to the lower ends of the suspender pipes 38, 38 which intersect in an X-shape, the girder pipe 36 on the opposite side of the weight is There is an inconvenience that the supporting suspender pipe 38 side lifts up and the clamping fitting 39 portion loosens.

Furthermore, as this type of scaffolding attachment device, one described in Japanese Utility Model Application Publication No. 151529/1983 is known. In this conventional example, a pair of plates with pressing parts that hold the flange are made slidable, and the interval between the pressing parts is made possible, but bolts and bolts are used to fix them.
Since nuts are used, the tightening action is complicated.

The present invention was developed in consideration of these circumstances, and it is easy to attach and detach without welding the attachment piece, and it can be securely attached without loosening when attached, ensuring safety. It is an object of the present invention to provide a scaffold attachment device that can easily adjust the interval between pressing members.

[Means for Solving the Problems and Their Effects] In order to achieve the above object, the scaffolding installation device according to the present invention fixes downwardly the mounting piece to which the suspenders having the girder pipes are attached at the lower end, and attaches the suspension to the H-shaped steel or I-shaped steel. a hanging pipe held perpendicularly to the bottom surface of the flange of the hanging pipe; and a hanging pipe that is arranged opposite to each other at the upper part of the hanging pipe with the mounting piece in the center and facing the flange of the H-beam or I-beam; a pair of jaw members that can freely set the spacing by moving toward and away from each other in the axial direction;
A threaded rod is rotatably supported by a bearing member installed inside the hanging pipe, and has a right-hand thread on one side and a left-hand thread on the other side with approximately the center as a boundary; a nut screwed onto each threaded portion, a slit formed in the axial direction in the suspension pipe in a range in which the jaw member moves, a connecting member connecting the nut to the jaw member via the slit, and the suspension pipe. A lock nut that is screwed onto the threaded rods protruding from both ends of the pipe to restrict rotation of the threaded rods, a handle fixed to the ends of the threaded rods protruding from both ends of the hanging pipe, and the pair of jaw members. A pressing member is provided which presses and clamps the flange in conjunction with a hanging pipe that is vertically movable and held perpendicular to the bottom surface of the flange of the H-shaped steel or I-shaped steel.

In this configuration, the hanging pipe is applied to the bottom surface of the flange of the H-type steel or I-type steel, the distance between the pair of jaw members is adjusted to a distance that allows the two flanges to be clamped, and then the pressing members of these jaw members are moved downward. The suspension rod is then pressed against the upper surface of the flange, and both flanges are held between the suspension rod located on the lower surface of the flange and the pair of pressing members, and the suspension rod is attached to the flange of H-type steel or I-type steel.

[Example] Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

Figures 1 to 3 relate to an embodiment of the device of the present invention, in which Figure 1 is a partially cutaway front view, Figure 2 is a front view showing how it is attached to the H-shaped steel, and Figure 3 is Figure 2. FIG.

In these figures, reference numeral 1 denotes a scaffold attachment device, which is welded and fixed in the center with the attachment piece 2 facing downward, and is applied perpendicularly to the bottom surfaces of flanges 3a and 3b of H-beam steel (or I-beam steel, hereinafter the same) 3. A pair of jaws which are arranged facing each other on the upper part of the hanging pipe 4 and the hanging pipe 4 centered on the mounting piece 2, and whose spacing can be freely set by moving in opposite directions in the axial direction of the hanging pipe 4. Parts 5, 5
and a pressing force that presses and clamps the flanges 3a, 3b with the hanging pipe 4, which is provided on the pair of jaw members 5, 5 so as to be movable up and down, and applied orthogonally to the bottom surfaces of the flanges 3a, 3b of the H-shaped steel 3. It is composed of a member 6.

A threaded rod 7 is inserted through the hollow of the hanging pipe 4, and the center of the threaded rod 7 is rotatably supported by a bearing member 8, and both ends of the threaded rod 7 extend from both ends of the hanging pipe 4. It protrudes to the outside, and handles 10, 10 are fixed to this protrusion via lock nuts 9, 9, respectively. The threaded rod 7 is formed with a right-hand thread 7a on one side and a left-hand thread 7b on the other side with the central bearing member 8 as a boundary. Then, nuts 11 and 1 are attached to each of the right-hand thread 7a and left-hand thread 7b.
1 are screwed together, and each nut 11, 11 is connected to the jaw members 5, 5 via a connecting member.
Further, axial slits 12, 12 are formed in the range in which the jaw members of the hanging pipe 4 move, and the hanging pipe 4 passes through these slits 12, 12.
The inner nuts 11, 11 and the outer jaw members 5, 5 are connected. Further, the jaw members 5, 5 are formed to hold the outer periphery of the hanging pipe 4 and rise upwardly. Furthermore, covers 13, 13 having screw holes projecting through the threaded rod 7 are attached to both ends of the hanging pipe 4.

On the other hand, the pressing member 6 includes a nut 14 fixed to the inside of the jaw member 5, a screw body 15 screwed onto the nut 14 and arranged to penetrate in the vertical direction, and a handle 16 fixed to the upper end of the screw body 15. , and a pressure contact body 17 fixed to the lower end of this screw body 15, and a lock nut 18 is screwed into the screw body 15 between the handle 16 and the upper surface of the jaw member 5.

In the figure, reference numerals 19 and 19 are suspender pipes fixed to the mounting piece 2 with bolts, nuts, etc., 20 is a girder pipe to which the lower ends of the suspender pipes 19 and 19 are fixed, and 21 and 21 are girder pipes 2.
This is a handrail pipe that is erected and fixed at the side end of 0.

In such a configuration, the hanging pipe 4 is connected to the H-shaped steel 3.
The jaw members 5, 5 rest on the respective flanges 3a, 3b by applying them to the bottom surfaces of the flanges 3a, 3b so as to be perpendicular to the length direction of the H-shaped steel 3, and rotating the handles 10, 10 of the threaded rod 7. the jaw member 5 to the position;
After moving the jaw members 5, 5, the lock nuts 9, 9 are fastened to the covers 13, 13 side to lock the rotation of the threaded rod 7, and the jaw members 5, 5 are moved.
Prevent the movement of 5. Thereafter, by rotating the handles 16, 16 of each jaw member 5, 5, the screw body 15, 1
5 and the pressure contact bodies 17, 17 are moved downward, and the pressure contact body 1
7 and 17 are pressed against the respective flanges 3a and 3b of the H-shaped steel 3, and lock nuts 18 and 18 are fastened to the upper surfaces of the jaw members 5 and 5 to prevent the screw body 15 from loosening, and the hanging pipe 4 and these pressing The flanges 3a, 3b are pressed and clamped by the contact members 17, 17 of the members 6, 6, and the hanging pipe 4 is securely attached to the H-shaped steel 3.

In the present invention, in order to prevent the jaw members 5, 5 from moving and the pressing members 6, 6 from loosening, a lock nut is used in the embodiment, but instead of this, a lock nut is used.
Alternatively, countermeasures may be taken as necessary, such as using these together to engage the pin between the fixed side and the rotating side.

In the present invention, the scaffolding device suspended from the attachment piece of the hanging pipe is not limited to the illustrated example, and various types of scaffolding devices, such as a chain type, can be used.

[Effects of the invention] As explained above, according to the invention, the attachment piece can be easily attached and detached without welding, and it can be securely attached without loosening when attached, ensuring safety. Moreover, there is an effect that the interval can be easily adjusted.

[Brief explanation of the drawing]

Figures 1 to 3 relate to an embodiment of the device of the present invention, in which Figure 1 is a partially cutaway front view, Figure 2 is a front view showing how it is attached to the H-shaped steel, and Figure 3 is Figure 2. The perspective view, FIGS. 4 and 5 are explanatory diagrams showing a conventional scaffold attachment device. 1...Scaffold attachment device, 2...Mounting piece, 3...H-shaped steel, 3a, 3b...flange, 4
... Hanging pipe, 5 ... Jaw member, 6 ... Pressing member.

Claims (1)

[Scope of utility model registration request] A hanging pipe that is fixed downward to which a suspender with a girder pipe attached at the lower end is held perpendicular to the bottom of the flange of an H-shaped steel or I-shaped steel, and a hanging pipe that is attached to the upper part of the hanging pipe with the mounting piece in the center. a pair of jaw members that are arranged to face each other and face the flanges of the H-shaped steel or I-shaped steel, and that move toward and away from each other in the axial direction of the hanging pipe to freely set the interval;
a threaded rod that penetrates the hanging pipe, is rotatably supported by a bearing member installed inside the hanging pipe, and has one side having a right-handed thread and the other side having a left-handed thread with a substantially central portion as a boundary; A nut screwed onto a right-hand threaded portion and a left-hand threaded portion of a threaded rod, a slit formed in an axial direction in a hanging pipe within a range in which the jaw member moves, and the nut connected to the jaw member via the slit. a locking nut that is screwed onto a threaded rod protruding from both ends of the hanging pipe to restrict rotation of the threaded rod, and a handle fixed to an end of the threaded rod protruding from both ends of the hanging pipe. , the H is provided on the pair of jaw members so as to be movable up and down.
1. A scaffolding attachment device comprising a hanging pipe held perpendicular to the bottom surface of a flange of a type steel or I-type steel, and a pressing member that presses and clamps the flange.