JPH0523716Y2 - - Google Patents

Description

[Detailed explanation of the invention] The U-shaped main body of conventional chain hanging hardware is made by bending an iron plate into a U-shape by pressure processing, so the internal stress at the bent corner is large, making chain hanging hardware difficult to use. If a large force is applied during installation, there is a risk that the parts may break at the corners.On the other hand, it is impossible to make steel plates with a certain thickness or more, and there is a limit to the strength of each part of the U-shaped body. The wall thickness remains the same, and it is not possible to make only the necessary parts stronger.

In addition, it is possible to attach an annular chain hanger to the U-shaped body with bolts perpendicular to it, or
Since the chain hanger is fixed, the chain hanger protrudes from the U-shaped main body, making it bulky when storing, packing, transporting, etc.

Therefore, in order to eliminate the above-mentioned defects, the present invention involves producing a long U-shaped base material with a desired cross section through processes such as hot rolling, drawing, and extrusion, and sequentially cutting the base material into predetermined widths. It has a U-shaped main body, a push bolt is screwed into the main body, and a U-shaped chain hanger is rotatably attached to the main body by a horizontal pin, making it easy to mass-produce. etc. to ideal dimensions to create the desired main body that is materially stable and has high strength.On the other hand, when storing or transporting, the chain hanging device can be folded to make handling easier. The present invention also relates to a chain hanging hardware that is practically useful by avoiding bending moment from acting on the U-shaped main body even when the chain is pulled in an oblique direction.

To explain the structure of one embodiment of the present invention shown in the drawings, a indicates a chain hanging hardware, 1 indicates its U-shaped main body, and A indicates a U-shaped base material of the U-shaped main body 1, which is hot-rolled and drawn. It is made into a long piece by extrusion or other processing, and its cross-sectional shape is U-shaped with one flange opening outward on the tip side.
The outer surface of the flange tapers slightly outward toward the distal end, and the inner surface tapers outward toward the distal end at an appropriate angle larger than the outer surface. It is almost at a right angle. Therefore, as shown in FIG.
A push bolt 4 with a recess 3 on the tip is screwed into the screw hole provided in the middle of the flange in a direction perpendicular to the inner surface of the flange, and a horizontal U-shape is inserted in the middle of the outer surface of the flange. Fix the bearing 5. Reference numeral 6 denotes a U-shaped chain hanger, which is reinforced by bending both edges of the middle part outward 7, and fitting a flange between both free ends to connect the through hole of both free ends with the bearing 5. A pin 8 is inserted into the U-shaped body 1, and a chain hanging tool 6 is rotatably fitted into the U-shaped main body 1 to form a chain hanging hardware a.As shown in FIG. When the chain hanger 6 is screwed in close to the flange of the main body 1 and rotated toward the U-shaped main body 1 side using the pin 8 as a fulcrum and folded, the U-shaped main body 1 is stored in the chain hanger 6.

9 is a flange of an I-beam of a steel structure, and 10 is a chain for scaffolding.

Next, we will explain how to use it. As shown in Figure 3, the main body 1 of the chain hanging hardware a is attached to the flange 9 of the beam.
After fitting, the push bolt 4 is screwed in and the flange 9 is sandwiched between this and the flange of the main body 1, and the chain hanging hardware a is tightened and fixed to the flange 9 of the beam.
Scaffolding chain 10 is inserted into, and although not shown,
The chain 10 is used for hanging scaffolding boards by hanging them over each other.

In the present invention, the chain hanging hardware is configured as described above, so that both the outer and inner surfaces of both flanges of the U-shaped base material form a V-shape with the tip side open. Or, if there is a relief in the mold, it is possible to smoothly and accurately produce a long U-shaped base material with a desired cross section by hot rolling, drawing, extrusion, etc. without biting the material. By sequentially cutting the base material into predetermined widths, the U-shaped main body can be rapidly mass-produced.

On the other hand, the wall thickness of each part of the U-shaped body can be formed to the ideal dimensions calculated according to the part, and there is no internal stress left like in conventional bent steel plates, and the material is It is possible to obtain a desired body that is uniform, materially stable, and has high strength, and it can be manufactured by sequentially cutting a long base material into a predetermined width, so the cost is low and it is economical. be.

Furthermore, since the main body can be made by cutting a long base material, by determining the cutting width according to the required strength of the main body and cutting at that width, the main body with the required strength can be obtained. There is no need to redo the mold each time depending on the strength, which is useful in practice and improves work efficiency.

In addition, when the inner surface of the other flange of the main body is nearly perpendicular to the center piece, the push bolts threaded through the screw holes of one flange are perpendicular to the inner surface of the other flange. The main body can be accurately attached to the flange of a beam, etc., and firmly tightened and fixed with push bolts.

Furthermore, since the chain hanger is rotatably attached to the main body with horizontal pins, it is easy to handle by folding the chain hanger when storing or transporting, and the chain can be pulled diagonally. It prevents bending moment from acting on the U-shaped main body even when the main body is bent, so there is no risk of damage, and the structure is simple and easy to construct, and its operation is light and smooth.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a chain hanging hardware according to an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a front view showing its usage condition, and Fig. 4 is the same as above for hanging the chain. FIG. 5 is a side view of the base material of the main body of the hardware, and FIG. 5 is a perspective view. a... Chain hanging hardware, 1... U-shaped main body, A... One flange, B... Other flange, A
... U-shaped base material, 2 ... cutting, 3 ... dent, 4 ...
... Push bolt, 5 ... Bearing, 6 ... Chain hanging device, 7 ... Bending, 8 ... Pin, 9 ... I-beam flange, 10 ... Scaffolding chain.

Claims (1)

[Scope of utility model registration request] Through processing such as hot rolling, drawing, and extrusion, 1
One flange forms a U-shape that opens outward on the distal side, and the outer surface of one flange has a slight taper outward on the distal side, and the inner surface tapers outward on the distal side at an appropriate angle that is larger than the outer surface. The inner surface of the other flange has a cross-sectional shape that is nearly perpendicular to the center piece, and a push bolt is inserted into the threaded hole provided in the middle of one flange in a direction perpendicular to the inner surface of the other flange. The U-shaped chain sling is screwed into the U-shaped bearing fixed to the middle part of the outer surface of the other flange so that it can be freely rotated by a horizontal pin, and when folded, the U-shaped main body can be stored in the chain sling. Chain hanging hardware installed.