JPH08270210A - Scaffold metal fittings for going up and down - Google Patents

Abstract

PURPOSE: To easily fix a compact, reliable, and safe scaffold metal fitting to a column body or unfix it from the column body, by holding the flange of column body with a U-shaped fitting part provided at one end of the pedal. CONSTITUTION: A U-shaped fitting part is provided at one end of pedals 2, 2 of metal fitting bodies 1, 1. The flange 31 of a H-shaped steel column body 30 is caught by the right hand piece 3b and the left hand pieces 3c, 3c of the fitting part. Then the fitting bolts 10, 10 of the fixing members 4, 4 are fastened to fix the scaffold metal fitting for going up and down to the column body 30. It is preferable to provide cast holes 21, 21 to fit a life-line hook at appropriate positions of the body 1 and also to provide non-slip protrusions 11 at the other end of the pedal against the fitting part. And further, it is preferable that the contact face on the flange surface 31 of the column body 30 in the fitting part is shaped so as to form a sawlike or waved non-slip face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating scaffolding metal fitting used for a temporary elevating and lowering trap of a vertical structure such as a column of H-shaped steel structure at a construction work or civil engineering work site.

[0002]

2. Description of the Related Art Conventionally, H-shaped steel structure pillars at construction sites have been used as temporary lifting traps for vertical structures such as columns.
A short piece of chevron steel was welded directly to the shaped steel column.
In addition to the inconvenience due to on-site welding, this structure requires cutting of the gas frame when disassembling, has a weak strength in addition to the labor of welding, and is dangerous because the column body is easily damaged by the heat of the gas frame. There was a problem. In many cases, the angle steel removed after use was difficult to reuse due to deformation and the like.

In some cases, scaffolding platforms are assembled and constructed. In this case, many construction materials were required, and a large amount of assembly construction cost and man-hours were required. This requires a lot of man-hours for dismantling, and is not compact, so that there is a problem that a storage space or a warehouse with a wide space is required to store it until it is reused. Further, there is a method of using a work vehicle at a high place, but the arrangement cost of the work vehicle and the driver is large, and there is a problem that work is interrupted because waiting time occurs.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to have a compact size and sufficient strength and to stand vertically at a high place. Reliable and safe scaffolding for lifting and mounting that can be easily installed on a column body such as H-shaped steel that is installed in a safe posture, can be disassembled, and can be used repeatedly. It is to provide metal fittings.

[0005]

In order to achieve the above-mentioned object, the lifting scaffolding metal fitting of the present invention has a foot mounting portion and one end of the foot mounting portion fitted and fixed to a flange of a pillar. The U-shaped mounting portion and the fixing member to the pillar provided in the U-shaped mounting portion.

Further, the foot rest, the U-shaped mount for fitting and fixing the foot rest on one end of the foot mount, and the U-shaped mount are provided. It is characterized in that it is made up of a fixing member to a pillar body, and a cast-out hole for hooking a lifeline hook is provided at an appropriate position.

Further, the fixing member of the lifting scaffolding metal is
It is a screw mechanism, a cam mechanism, or a wedge mechanism that is screwed or fitted to the U-shaped mounting portion.

Further, the foot rest of the lifting scaffolding member is made of a plate or a rod and has a slip stopper stopper projection at the end opposite to the U-shaped mounting portion.

The lifting scaffolding metal fitting is made of ductile cast iron. Furthermore, the abutment surface of the U-shaped mounting portion for holding and fixing the flange portion of the columnar body against the flange surface of the columnar body is formed as a serrated groove or a wavy slip stopper. It is characterized by

[0010]

In the scaffolding using the lifting scaffolding metal fitting of the present invention, the U-shaped mounting portion is fitted into the flange of the columnar body such as H-shaped steel, and is clamped and fixed by bolting. It can also be dismantled by loosening the bolts. In addition, a cast hole is appropriately provided at the other end of the footrest portion and the U-shaped attachment portion of the lifting scaffolding metal fitting of the present invention so that a hook of a lifeline can be hooked. Therefore, the work posture is stable and the safety is high. Further, the scaffolding fitting for lifting according to the present invention has a compact structure in which the footrest, the U-shaped mounting portion and the safety projection are made of ductile cast iron, and have a compact structure. Can be attached to. Further, by forming a serrated groove on the inner surface of the U-shaped mounting part, it is possible to avoid the occurrence of slippage with the flange part of the H-shaped steel, and it is possible to hold it securely, which increases reliability and safety. can do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the lifting scaffolding metal fitting of the present invention will be described below with reference to FIGS. FIG. 1 (a) is a plan view of a lifting scaffolding fitting of the present invention, FIG. 1 (b) is a side view thereof, and FIG.
1A-A line cross-sectional view, FIG. 3 is a cross-sectional view of FIG. 1B-B line, FIG. 4 is a perspective view showing a state in which the lifting scaffolding metal fitting of the present invention is attached to a vertical column made of H-shaped steel, FIG. 5 is an explanatory view showing a situation in which the lifting scaffolding metal fitting of the present invention is attached to a vertical column made of H-shaped steel and an operator actually uses it as a scaffolding.

In FIG. 1, reference numeral 1 denotes a lifting scaffolding metal fitting body according to the present invention, which is composed of a footrest portion 2, a U-shaped mounting portion 3 and a fixing member 4. The foot rest portion 2, the U-shaped mounting portion 3, and the safety protrusion 11 are integrally formed of high-strength ductile cast iron.

The foot rest 2 is rod-shaped and has a cross section shaped like an I-shape laid down sideways, which is lightweight and highly rigid. Cast-out holes 21 are provided at appropriate intervals in the I-shaped web portion, and play a role of hooking a lifeline, reducing the weight of the main body 1 and eliminating foreign matter. The safety protrusion 11 is provided on the end of the foot rest 2 so as to stably secure the position of the foot during work, and contributes to the safety of the worker, and in turn, the relief of the worker and the improvement of work efficiency. are doing. The U-shaped mounting portion 3 provided at the other end of the foot rest 2 is composed of a bottom piece 3a, left and right pieces 3b and 3c, and the bottom piece 3a is the same as the foot rest 2. Formed,
The left and right pieces 3b and 3c extend horizontally from the bottom piece 3c.

A screw hole 3d is screwed into the right portion 3b, and a mounting bolt 10 as a fixing member 4 is screwed into the screw hole 3d so that the flange 31 of the column 30 made of H-shaped steel is tightened and fixed. It has become. As shown in FIGS. 2 and 3, a serrated or wavy saw ring 12 is formed on the inner surface at a symmetrical position with respect to the position where the screw hole 3d of the left portion 3c is drilled.

The mounting bolt 10 as the fixing member 4 has a pointed tip and is designed to bite into the side surface of the flange 31 of the H-shaped steel, so that there is no deviation after fixing and the safety is high. Or, when tightening the mounting bolt 10, the saw ring 1
The serrated portion of No. 2 bites on the side wall of the flange 31 of the H-shaped steel, and is more firmly fixed to the column body 30. That is, as described above, according to the scaffolding tool for lifting / lowering of the present invention, the U-shaped mounting portion 3 clinging to the flange 31 of the H-shaped steel of the pillar body 30 has the mounting bolt 1
0 bites well with the protrusion at the tip of 0, and the saw ring 12
The serrated portion also prevents the occurrence of slippage on the side surface of the flange 31 of the H-shaped steel, and avoids the occurrence of abnormalities such as falling and loosening.

FIG. 4 shows a state in which the raising / lowering scaffolding metal fitting of the present invention is attached to the H-shaped steel column body 30, and FIG. The work is performed while climbing above the body 1 and leaning on the lifeline 52. In addition to the usage shown in FIG. 5, the main lifeline attached to the worker's safety belt is fixed upwards, and two auxiliary lifelines attached to the safety belt are attached to the worker's waist. It can be used by hooking it into the cast hole 21 of the scaffolding for raising and lowering of the present invention, which is inserted and fixed at the height. As a result, the work posture is stable, the safety is high, and the worker can work with peace of mind.

The results were confirmed by applying loads from various directions to the lifting scaffolding metal fitting of the present invention. The lifting scaffolding metal fitting is a highly safe scaffolding metal fitting that does not rotate, fall, or fall off. Has been confirmed. It is considered that this is mainly due to the large load bearing capacity of the U-shaped mounting portion 3 which is compact in shape.

FIG. 6 shows another embodiment, and FIG. 7 shows yet another embodiment. These examples show that the optimum shape can be appropriately selected according to the structures of the column 10 and the structure around it, and at the same time, it is possible to adapt to the posture and taste of the worker.

Although the example of the mounting bolt 10 is shown as the fixing member 4 in the above embodiment, the present invention is not limited to this, and is a cam mechanism or a wedge mechanism for holding a columnar body such as H-section steel. May be. Further, in the above embodiment, the case where the scaffolding metal for raising and lowering is provided in the up and down direction to raise and lower is shown, but this can be freely selected depending on the mounting direction.

[0020]

As described in detail above, according to the scaffolding for lifting and lowering of the present invention, the scaffolding can be easily attached to the columnar body such as H-shaped steel with a fixing member such as a bolt. It can also be easily removed by loosening the bolt.

Further, since the main body, the mounting portion, and the safety projection are integrally formed by casting of high-strength ductile cast iron, an extremely strong metal fitting can be obtained, and the U-shaped mounting portion is made of an H-shaped steel column. As a scaffold for holding and lifting, it can be easily installed, dismantled, and securely inserted and fixed to obtain a scaffold with high workability, reliability, and safety. In particular, the columnar body is well bited by the serrated portion formed by the annular projection, so that the safety after tightening and the effect of preventing slippage can be exhibited.

Further, a casting hole is appropriately provided at the other end of the footrest portion and the U-shaped mounting portion of the lifting scaffolding metal fitting of the present invention,
You can hang a lifeline hook. Therefore, the work posture is stable and the safety is high, and the worker can work with peace of mind.

[Brief description of drawings]

FIG. 1 is a plan view (a) and a side view (b) showing an embodiment of a lifting scaffolding metal fitting of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 is a plan view showing a state in which the lifting scaffolding metal fitting of the present invention is attached to an H-shaped steel column.

FIG. 5 is an explanatory view showing an example of use of the lifting scaffolding metal fitting of the present invention.

FIG. 6 is a plan view (a) and a side view (b) showing another embodiment of the lifting scaffolding metal fitting of the present invention.

FIG. 7 is a plan view (a) and a side view (b) showing still another embodiment of the lifting scaffolding fitting of the present invention.

[Explanation of symbols]

 1 main body 2 foot mounting portion 3 U-shaped mounting portion 11 safety protrusion 12 saw ring 3a bottom piece 3b right side piece 3c left side piece 3d screw hole 10 mounting bolt 21 cast hole 30 pillar body 31 H-shaped steel flange 32 H-section steel web 51 Worker 52 Lifeline

Claims (6)

[Claims] 1. A foot rest, a U-shaped mount for fitting and fixing a foot flange at one end of the foot rest, and the U-shaped mount. Scaffolding metal fittings for lifting and lowering, which consist of fixing members to the pillar. 2. A foot rest, a U-shaped mount at one end of the foot rest for fitting and fixing the flange of the columnar body, and the U-shaped mount. A scaffolding for lifting and lowering, characterized in that it has a cast-in hole for hooking a lifeline hook in place. 3. The fixing member of the lifting scaffolding fitting is a screw mechanism, a cam mechanism, or a wedge mechanism that is screwed or fitted to the U-shaped mounting portion. Scaffolding metal for lifting. 4. The footrest of the elevating scaffolding fitting is plate-shaped or rod-shaped and has a slip stopper stopper projection at the end opposite to the U-shaped mounting portion.
The scaffolding hardware for lifting as described in 2 or 3. 5. The lifting scaffolding fitting according to claim 1, 2, 3 or 4, wherein the lifting scaffolding fitting is made of ductile cast iron. 6. The contact surface of the U-shaped mounting portion for holding and fixing the flange portion of the columnar body with respect to the flange surface of the columnar body is formed as a serrated groove having a serrated groove or a wavy shape. The lifting scaffolding metal fitting according to claim 1, 2, 3, 4 or 5.