JPH11209910A - Constructing flooring steel plate and its manufacture and hanging up hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constructing flooring steel plate which can be easily moved by a crane with a hook hung on a hanger, and does not have a great variation in structure from an existing flooring steel plate, and does not damage the smoothness of a plate face. SOLUTION: In a constructing flooring steel plate 1, a hanger unit 5 is weldedly attached to a receiving opening 6 of a rectangular steel plate body 2. The hanger unit 5 is composed by mutually weldedly attaching a hanger 3 and a support member 4 for pivoting it, and is previously manufactured separately from the steel plate body 2 in a workshop. The hanger 3 is equipped with a bent part 3a; a shaft part 3b to extend at right angle from both its ends toward the side; and a connecting part 3c for connecting in right angle direction between near both the ends of the bent part 3a. A support member 4 is equipped with a support plate 7 and a pair of bearing caps 8 weldedly attached to one side 7a of the plate 7. The bearing cap 8 receives the shaft part 3b of the hanger 3 into a bearing hole 8a. The hanger 3 falls down and stands up inside the storing recessed spot 6b of the receiving opening 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron sheet for construction work to be laid on the ground to form a passage for vehicles or the like on a temporary road or a construction site, or to form a stable scaffold for heavy machinery. It is.

[0002]

2. Description of the Related Art In general, as this type of iron sheet, a long side is 6 m, a short side is 1.5 m, a thickness is 22 to 25 mm, and a weight is 1.5 to 1.5.
A rectangular iron plate of about 1.8 t is used. In general,
A hanging hole is provided in the vicinity of the center edge of the long side of the iron sheet, and a hook is hooked on the hanging hole and lifted by a crane to move the truck to a truck.

[0003] In order to facilitate hooking on the iron sheet, a notch for accommodating a shackle for hooking is formed at the end of the iron sheet, and a shackle is pivotally pivoted in the notch. Is publicly known (Japanese Patent Publication No. 6-745)
No. 63). In this case, the shackle is formed by reciprocatingly bending a bar having eye portions for bearings at both ends. The pivot shaft is welded to the notch at both ends so as to cross the notch. A protection plate is overlaid and welded on the welded portion of the shaft, and protrudes from another portion of the iron sheet.

[0004]

Among the above-mentioned conventional iron sheets having a suspension hole, for example, when unloading a flat iron sheet on a truck bed, between the upper and lower iron sheets. It is necessary to insert a lever to make a gap, insert a hook from this gap, and hang it on the hanging hole. This is not only annoying, but also a dangerous task. Also, when lifting an iron sheet laid on the ground, it is necessary to create a gap between the iron sheet and the ground, but it is generally not easy to raise the iron sheet that is pressed against and adhered to the ground, Excavation of the ground is also difficult if the condition of the ground is poor.

[0005] Further, in the case where the shackle is attached, since the shaft portion protrudes from the other part of the iron sheet, there is a drawback that it becomes an obstacle to store and transport a plurality of iron sheets in a pile.

Therefore, the present invention can easily and securely hook the hook without requiring a dangerous staking operation, and can be configured without greatly changing the structure of the existing iron sheet. It is an object of the present invention to provide an iron sheet for construction without impairing the smoothness, a method for manufacturing the iron sheet, and a hook for suspending the iron sheet.

[0007]

According to the first aspect of the present invention, a hanging unit is provided at a receiving opening 6 formed near the center of one long side 2a of a rectangular iron plate body 2. 5 are welded to form the iron sheet 1. The hanging unit 5 is constructed by assembling the hanging hand 3 and the supporting member 4 that pivotally supports the hanging hand 3. The hanging part 3 has a U-shaped curved part 3.
a, a pair of shaft portions 3b extending laterally at right angles from both ends of the curved portion 3a, and a connecting portion 3c connecting the vicinity of both ends of the curved portion 3a in a perpendicular direction. The support member 4 of the hanging unit 5 includes a rectangular supporting plate 7 and a bearing cap 8 formed by welding a pair on one side 7a of the supporting plate 7. The bearing cap 8 is provided in the bearing hole 8a. 3 shaft part 3b
Place to accept. The hanging hand 3 has a receiving opening 6.
In the storage recess 6b.

Therefore, when not in use, the hanging hand 3 does not protrude above the iron plate main body 2, and no projecting portion is formed on the pivot portion of the hanging hand 3. Nevertheless,
The hook 3 and the connection between the hook 3 and the iron plate main body 2 can be strengthened. Since the hanging unit 5 for supporting the hanging hand is separately assembled in a factory or the like and then welded to the iron plate body 2, the hanging unit 5 is large and inconvenient for handling in the factory. The attachment of the hand 3 is easy and reliable.

According to the second aspect of the present invention, a U-shaped curved portion 3a, a pair of shaft portions 3b extending laterally at right angles from both ends of the curved portion 3a, and both end portions of the curved portion 3a A hook 3 having a connecting portion 3c for connecting the vicinity thereof at right angles to each other.
In addition, a pair of bearing caps 8 each having a bearing hole 8a for receiving the shaft portion 3b of the hanging hand 3 is manufactured, and a support plate for supporting the bearing cap 8 is manufactured. Then, with the bearing holes 8a of the pair of bearing caps 8 facing each other and the shaft portion 3b of the handle 3 inserted into the bearing holes 8a, the bearing cap 8 is welded onto one side 7a of the support plate 7, and The hand unit 5 is manufactured. On the other hand, in the vicinity of the center of one long side 2a of the rectangular iron plate main body 2, a receiving opening 6 substantially similar in shape to the outer shape of the hanging unit 5 is formed. Then, the hanging unit 5 is fitted into the receiving opening 6, and the sides of the support plate 7 and the bearing cap 8 are welded to the inner edge of the receiving opening 6. Fall in 6b,
The construction iron plate 1 is manufactured by pivoting so as to be able to stand up.

At the time of manufacture, a hanging unit 5 requiring relatively precise welding work such as axial alignment is manufactured in a factory equipped with facilities in advance, and for example, the iron plate body 2 stored outside the factory is installed on site. A fusing process for forming the opening 6 is performed. Then, the hanging unit 5 is brought to the storage location of the iron plate main body 2 and the hanging unit 5 is welded to the opening 6, so that the high quality iron sheet 1 can be easily manufactured. Outside the factory,
When the bearing cap is directly welded to the opening 6 of the iron sheet, alignment is not easy, and accurate and strong mounting cannot be expected.

According to a third aspect of the present invention, there is provided a hook 9 for hoisting the construction iron sheet 1 having the above-described configuration with a crane or the like. 10, a straight rod portion 11 continuing above the straight rod portion 10 and a locking portion 12 provided above the straight rod portion 11.
In order to allow the iron plate main body 2 to freely hang down during the lifting, the iron plate main body 2 can extend along a side surface of the iron plate main body 2 so as to extend linearly to a position beyond the end side 2a.

When the hook iron 9 is hung on the hanging hand 3 raised from the iron plate main body 2 to lift the iron plate 1, a straight rod portion 11 is formed.
However, since the iron plate main body 2 is avoided, the iron plate main body 2 can be freely hung, and workability is good.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 is a plan view of a part of the iron sheet, FIG. 2 is a plan view of the entire iron sheet, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1, and FIG. 4 is a plan view of a receiving opening of the iron sheet. 5 is a plan view of the hanging unit, FIG. 6 is a plan view of the hanging unit, FIG.
(A) is a plan view of the support plate, (B) is a side view, FIG.
9A is a plan view of a bearing cap, FIG. 9B is a front view, FIG. 9C is a side view, FIG. 9 is a front view of a hook for lifting an iron sheet, and FIG. 10 is a side view of the hook.

1 to 3, the iron sheet 1 includes a rectangular iron plate body 2 and a hanging handle 3 pivotally supported by the iron plate body 2. The iron plate body 2 has two long sides 2a and 2b,
It is a rectangular steel plate having two short sides 2c and 2d. A suspender 3 is provided so as to be able to stand upright and fall over in a storage recess 6b formed at a portion slightly inside the long side 2a of the iron plate main body 2 from the center. The hanging hand 3 is used when the storage recess 6
b and does not protrude above the iron plate main body 2.

As shown in FIG. 5, the hanging hand 3 is integrally assembled as a hanging unit 5 with a supporting member 4 for supporting the hanging hand. On the other hand, as shown in FIG. 4, the iron plate main body 2 has a receiving opening 6 substantially similar to the outer shape of the hanging unit 5.
Is formed by a method such as fusing. The receiving opening 6 has a rectangular portion 6 a for receiving the support member 4, a storage recess 6 b for receiving the hanger 3, and a clearance recess 6 c for passing a hook retaining lever, which will be described later, between the receiving portion 6 and the top of the hanger 3. Having.
Since the receiving opening 6 is not open to the long side 2a side, it can sufficiently withstand the stress at the time of lifting. Then, the hanging unit 5 is welded to the receiving opening 6 of the iron plate main body 2.

As shown in FIG. 6, the hanging hand 3 is formed by fusing and cutting a steel plate having a thickness equivalent to the thickness of the iron plate main body 2 (25 mm in the embodiment), and has a U-shaped curved shape. Part 3
a, a pair of shaft portions 3b extending laterally at right angles from both ends of the curved portion 3a, and a connecting portion 3c for connecting the vicinity of both ends of the curved portion 3a at right angles.

As shown in FIGS. 5, 7, and 8, the supporting member 4 of the hanging unit 5 includes a rectangular supporting plate 7 formed of a steel plate having the same thickness as the iron plate main body 2, and one side of the supporting plate 7. And a bearing cap 8 having a pair welded to each other on a pair 7a. The bearing cap 8 is also formed of a steel plate having the same thickness as the iron plate main body 2, and has a bearing hole 8 a that opposes the shaft portion 3 b of the hanger 3. Then, the bearing cap 8 is welded onto the support plate 7 in a state in which the shaft portion 3b of the hanger 3 is received, and the hanger unit 5 is formed.

The iron plate body 2 is large and heavy, so that it is not easy to carry, move, and store it in a factory. Therefore, it is convenient to attach the hanging hand 3 to the iron plate main body 2 at a storage location of the iron plate main body 2 outside the factory. However, welding of the bearing cap 8 for pivotally supporting the lifting hand 3 requires relatively high precision, such as alignment of the bearing hole 8a, and thermal deformation during the operation is also added, so that the factory is not equipped with facilities. Construction outside is difficult. Therefore, in the present invention, the welding operation of the support plate 7 and the bearing cap 8 is performed in a factory equipped with facilities,
The hanging unit 5 is mass-produced, and the hanging unit 5 is brought to a storage location of the iron plate body 2 outside the factory.
The receiving opening 6 can be formed and the hanging unit 5 can be welded. In this way, it is easy to attach the hanging hand 3 to the existing iron sheet.

FIGS. 9 and 10 show the iron sheet 1 of the above embodiment.
Shows a hook 9 for hoisting with a crane or the like. The hook 9 includes a hook 10 for hanging on the hanging hand 3 and the hook 1.
It has a straight rod portion 11 that is continuous with the upper portion of the zero and an engaging portion 12 provided above the straight rod portion 11. Straight rod 11
The iron plate body 2 extends along the side surface of the iron plate body 2 during lifting.
And extends linearly to a position beyond the end side 2a of the iron plate main body 2 so that the iron plate main body 2 can freely hang down. A wire rope R or the like connected to the crane is locked by the locking portion 12. An upper end of a stopper lever 13 is pivotally connected to an upper portion of the straight rod portion 11 with a pin 14. The retaining lever 13 includes an arm 13a extending linearly downward along the straight rod portion 11, an opening / closing portion 13b that is bent substantially at a right angle continuously to the lower end of the arm 13a, and extends until reaching the tip of the hook portion 10. Having. From the upper end of the arm 13a,
The operation lever 13c extends to the side. The opening / closing portion 13b of the retaining lever 13 always closes the hook portion 10 and prevents the hanging handle 3 hooked on the hook portion 10 from slipping out.
When the operation lever 13c is rotated counterclockwise, the hook 1
0 is released to allow the hanging handle 3 to be disengaged.

When the iron sheet 1 is to be stacked flat on a truck bed, for example, the handle 3 is turned over into the storage recess 6b, and the iron plate body 2 is stacked. When unloading this, the lifting hand 3 is raised from the storage recess 6b of the uppermost iron plate body 2, and the hook 9 of the crane is hung to lift it. At the time of lifting, the hook 9 does not come into contact with the iron plate main body 2 and does not hinder free hanging of the iron plate main body 2. The same applies when removing objects laid on the ground. In this case, the other long side 2b is in contact with the mounting surface until it is gradually raised from the lying state and is about to be vertically lifted. When laying the iron plate 1 on the ground, the lower long side 2b is lowered on the ground so as to follow a predetermined arrangement line, and the iron plate main body 2 is overturned and placed on the ground using this as a fulcrum. Straight rod 11 of hook 9
Is located along one side surface of the iron plate main body 2, the falling direction of the iron plate main body 2 is always determined on the opposite side of the straight rod portion 11. After laying, the hook is removed and the hanging hand 3 is fallen into the storage recess 6b. Loading of the truck on the loading bed is performed in the same manner. Since the iron plate main body 2 is smooth, the hanging hand 3 does not hinder the work, and is stacked flat on the carrier.

[0021]

As described above, according to the first aspect of the present invention, the hanger 3 does not protrude above the iron plate body 2 when not in use, and the protruding portion is also provided on the pivot portion of the hanger 3. Is not formed, the hanging hand 3 and the connection between the hanging hand 3 and the iron plate main body 2 can be strengthened. Since the hanging unit 5 that supports the hanging hand 3 is separately assembled in a factory or the like and then welded to the iron plate main body 2, the large and inconvenient iron plate main body 2 that is inconvenient to handle in the factory is installed. There is an effect that the attachment of the hanging hand 3 is easy and reliable.

According to the second aspect of the present invention, the hanging unit 5 that requires relatively precise welding work including alignment of the shaft center is manufactured in a factory in advance, and the hanging unit 5 is mounted on the iron plate body 2 stored outside the factory, for example. Has an effect that a high quality iron sheet 1 can be easily manufactured by performing a fusing process for forming the opening 6 on site and welding the hanging unit 5 to the opening 6.

According to the third aspect of the present invention, the hook 9 is hooked on the hanging
When the paving iron plate 1 is lifted, the straight rod portion 11 follows the side surface of the iron plate main body 2 while avoiding the iron plate main body 2, so that the iron plate main body 2 can be freely hung, and the workability is good.

[Brief description of the drawings]

FIG. 1 is a plan view of a part of an iron sheet according to the present invention.

FIG. 2 is an overall plan view of the iron sheet.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of an opening of the iron sheet.

FIG. 5 is a plan view of the hanging unit.

FIG. 6 is a plan view of a hanging hand.

FIG. 7A is a plan view of a support plate, and FIG. 7B is a side view of the same.

8A is a plan view of a bearing cap, FIG. 8B is a front view thereof, and FIG. 8C is a side view thereof.

FIG. 9 is a front view of the hook.

FIG. 10 is a side view of the hook.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron plate 2 Iron plate main body 2a Long side 3 Hanger 3a Bending part 3b Shaft part 3c Connecting part 5 Hanger unit 6 Opening 6b Storage recess 7 Support plate 8 Bearing cap 8a Bearing hole 9 Hook 10 Hook part 11 Straight rod part 12 Locking part

Claims (3)

[Claims] 1. A hanger unit comprising a hanger and a support member for pivotally supporting the hanger is welded to a receiving opening formed near the center of one long side of a rectangular iron plate main body, The hanging hand has a U-shaped curved portion, a pair of shaft portions extending laterally at right angles from both ends of the curved portion, and a connecting portion that connects the vicinity of both ends of the curved portion in a perpendicular direction. The support member comprises: a rectangular support plate; and a bearing cap, a pair of which is welded on one side of the support plate so as to receive a shaft portion of the handle main body in a bearing hole. An iron sheet for construction, wherein a hand is pivotally supported so as to fall and stand up in the storage recess of the receiving opening. 2. A U-shaped curved portion, a pair of shaft portions extending laterally at right angles from both ends of the curved portion, and a connecting portion connecting the vicinity of both ends of the curved portion in a perpendicular direction. Manufacturing a hanger comprising: a step of manufacturing a pair of bearing caps each having a bearing hole for receiving the shaft of the hanger; and a step of manufacturing a support plate for welding the bearing cap. Producing a hanger unit by welding the bearing cap on one side of the support plate with the bearing holes of the pair of bearing caps facing each other and the shaft of the hanger inserted into the bearing hole; Forming a receiving opening having a shape substantially similar to the outer shape of the hanging unit around the center of one long side of the iron plate main body; and fitting the hanging unit into the receiving opening;
Welding the side edges of the support plate and the bearing cap to the inner edge of the receiving opening, falling down into the storage recess of the receiving opening, and pivotally supporting the stand upright. Production method. 3. A hook for lifting the iron work sheet according to claim 1, further comprising: a hook for hanging the hook, wherein the hook is continuous with an upper portion of the hook, and the iron plate main body is lifted at the time of lifting. It is characterized by comprising a straight rod portion extending to a position beyond the edge of the iron plate main body so that it can be freely hung down and along the side surface of the iron plate main body, and a locking portion provided on an upper portion of the straight rod portion. And hooks for lifting iron plates.