JP3621506B2 - Fire catching piece - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire catching piece used at a mountain-stop support construction site, and more particularly to a fire catching piece that can be used for both left and right and can be efficiently attached and detached.
[0002]
[Prior art]
In general, in pile support work, sheet piles (sheet piles) are driven around the excavation site, and abdominal materials (steel materials such as H-shaped steel) are attached almost horizontally along each sheet pile. The sheet piles are prevented from collapsing by supporting the abdomen using a fire hitting material or the like. In such construction, a load called a fire receiving piece is interposed between the belly material and the fire hitting material to support the load. Usually, the flank material and the beam material are orthogonal to each other, and the fire striking material and the flank material are joined at an angle of 60 ° or 45 °, so the fire receiving piece is for 60 °, 45 °, or 30 °. Is used as standard. However, depending on the situation at the work site, it is not always possible to attach the hitting material at a fixed angle, and it may be necessary to attach it at an arbitrary angle. Therefore, conventionally, in such a case, a fire receiving piece with an arbitrary mounting angle has been used.
[0003]
As a conventional example of a fire receiving piece that can be freely mounted, for example, one described in Japanese Utility Model Publication No. 7-513 is known. FIG. 11 is an explanatory view showing the contents described in the publication. As shown in the figure, the fire receiving piece 101 is provided on the side of a rectangular mounting plate 102 in which a large number of bolt holes 103 are formed. A trapezoidal bottom plate 104 is fixed so as to be orthogonal to each other, and a partition plate 105 is disposed on the notch portion side of the trapezoidal bottom plate 104. Also, three trapezoidal reinforcing ribs 106 are attached to the outside of the partition plate 105, and a hook 107 for lifting is installed on the rib 106 at the center of gravity of the member.
[0004]
Further, a hook portion 108 is fixed by welding in order to temporarily fix the fire striking metal fitting 101 to the belly raising material, and the hook portion 108 is once used to fix the fire striking metal fitting 101 to the belly raising material. Then, the work is temporarily fixed to the flange portion of the belly raising material, and after the attachment position is determined, the bolt hole 103 is passed through the bolt and fixed to the belly raising material. Then, as shown in FIG. 12, the fire striking material 109 and the beam member 110 are placed on the bottom plate 104, and the concrete 111 is poured and fixed.
[0005]
[Problems to be solved by the invention]
However, in this conventional fire catching piece 101, it is necessary to prepare a left-facing piece and a right-facing piece 101 as is apparent from FIG. In other words, the fire receiving piece shown in FIG. 11 has a drawback that it is not versatile because it is not used for both right and left. In addition, since the hook portion 108 is fixed by welding, when the hook portion 108 becomes an obstacle at the time of attachment, it is necessary to cut off the hook portion 108, which requires much labor.
The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a fire receiving piece that can be used for both left and right and can be easily attached. .
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a support for supporting a load that is interposed between an abdominal material and a fire hammer, and is fixed and connected at a substantially right angle on one long side. Two rectangular plates each having an L-shaped cross section and having a large number of bolt holes, a protruding piece formed on the other long side edge of each rectangular plate, and a key shape A hook part that is shaped and detachably fixed to each projection piece with bolts and nuts and a middle part between the two rectangular plates, and is a partition that divides the L-shaped space into two spaces It has the characteristic that it has a board and the reinforcement board | plate material attached so that the side part of one space may be covered among two said divided | segmented spaces.
[0007]
According to the present invention configured as described above, any one of the two rectangular plates is used as the attachment surface side, and the other is used as the bottom surface side. Can also be used. In addition, since the hook part is detachably attached from the fire receiving piece, if the hook part interferes with the attachment, it is not necessary to cut it off and it can be easily removed by loosening the bolts and nuts. Will be able to. In addition, if the hook part is attached with a countersunk bolt, the inner surface of the rectangular plate becomes flat, so even if the hook part (which is actually unnecessary) attached to the bottom side is still attached, The steel material can be placed flat on the side. In addition, since the inner surface of the rectangular plate is flat, a plurality of fire receiving pieces can be stably stacked when transported.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of an embodiment of a fire receiving piece to which the present invention is applied. FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, FIG. 4 is a side view thereof, and FIG. Each beam structure is shown. As shown in the figure, the fire catching piece 14 has two flat rectangular plates 1 (1a, 1b) each having a large number of bolt holes 8, and the length of each rectangular plate 1a, 1b. The sides are connected and fixed at almost right angles by welding. And the partition plate 2 is installed substantially perpendicularly with respect to the two rectangular plates 1a and 1b so as to partition the inside of the L-shaped plate formed in this way. The enclosed space is divided into two spaces 3a and 3b.
[0009]
One space 3a divided by the partition plate 2 is covered with a trapezoidal reinforcing plate member 4, and inside thereof, as shown in FIG. A material 5 is disposed. The beam 5 can support the load received from the fired material disposed obliquely with respect to the raised member 12. Further, through holes 11 for attaching a hanging hook at the time of lifting are formed at appropriate positions of the partition plate 2 and the reinforcing plate member 4.
Trapezoidal projection pieces 6 are formed integrally with the plates 1a and 1b at both ends on the long side of each rectangular plate 1a and 1b, and each projection piece 6 has bolt holes 7 at two locations. The hook portion 9 can be attached and detached by allowing a bolt to communicate with a bolt hole 10 formed in the hook portion 9 (described later) formed in a key shape. At this time, it is desirable to use a countersunk bolt having a flat head as a bolt used for attachment and detachment.
[0010]
FIG. 6 is a perspective view of the hook portion 9, and FIG. 7 is a front view (a) and a side sectional view (b) of the hook portion 9. As shown in the figure, the hook portion 9 has a structure in which a thick portion 9a and a thin portion 9b are coupled in an L shape, and bolt holes 10 are formed in two locations through the thick portion 9a. ing. Further, the key-shaped width t formed by the compacted portion 9a and the thin-walled portion 9b is slightly wider than the plate thickness of the H-shaped steel (reference numeral 12 shown in FIG. 1) that constitutes the abdominal material. .
[0011]
Next, the operation of the present embodiment configured as described above will be described. First, at the time of shipment from the factory, the hook part 9 is usually shipped with a flat bolt attached to each of the four projecting pieces 6 of the fire receiving piece 14 shown in FIG. Since the countersunk bolts are used for attachment, the inner surfaces of the rectangular plates 1a and 1b are flat, and a plurality of fire receiving pieces 14 can be stacked and loaded on the transportation truck.
And when attaching to an abdominal material, first, it decides whether this fire catching piece 14 is used for right and left, one of the two rectangular plates 1a and 1b is a bottom surface, and the other is an attachment surface. To do. In the example shown in FIG. 1, it is an example when it is used as the fire receiving piece 14 for the right side, and the plate 1a is the bottom surface and 1b is the mounting surface. On the other hand, when used for the left side, the plate 1a is the mounting surface and 1b is the bottom surface. At this time, since the hook portion 9 is fixed by the countersunk bolt, the inner surface of the plate on the bottom surface side is flat with no extra protrusions, and is therefore attached to the plate on the bottom surface side. Although the portion 9 is not actually required, the steel material can be placed flat even when attached.
[0012]
After that, a shackle is attached to the through-hole 11, a wire is passed through the shackle, a hook of a crane or a wrecker is hooked on the shackle, and the hook portion 9 is transferred to a predetermined abdominal material part. Engage with the part and place temporarily. Then, the temporarily placed fire receiving piece 14 is moved to a predetermined position by using a gold lever, a bar or the like, and the position is adjusted. Next, the bolt 13 is inserted into the bolt hole 8 of the rectangular plate on the mounting surface side at this position and fixed to the abdomen using a nut, and then the fired material and the beam material are placed on the plate 1a on the bottom side. Is placed, and concrete is placed around this and firmly fixed. Thus, the fire catching piece 14 can be easily fixed. In addition, since the hook portion 9 and the protruding piece 6 can be attached and detached with bolts and nuts, for example, as shown in FIG. 8, an abdominal material in which two H-shaped steels 12a and 12b are arranged in an overlapping manner is used. On the other hand, when the hook portion 9 is attached, the protrusion by the hook portion 9 becomes an obstacle and cannot be fixed to the abdomen. Therefore, in this embodiment, since the hook portion 9 is detachable, the fire receiving piece 14 can be easily fixed to the H-shaped steel by removing the hook portion 9 by loosening the bolts and nuts.
[0013]
Next, the reason why the cross beam 5 (see FIG. 5) is disposed in the space 3a covered with the reinforcing plate 4 will be described. Usually, a force is applied to the partition plate 2 in an oblique direction from the fire hitting material and the beam material. In order to support this load, the fire receiving piece shown in FIG. The reinforcing ribs 106 arranged in parallel with each other are attached. On the other hand, as shown in FIG. 1, in the fire catching piece 14 of this embodiment, it is used for both left and right, and the rectangular plates 1a and 1b are on the mounting surface side or the bottom surface side depending on the use situation. It is necessary to form the reinforcing ribs in a cross shape so that they can be formed. However, if the reinforcing ribs 106 as shown in FIG. 11 are simply arranged in a cross shape, the internal space becomes narrow, and it is extremely difficult to fix the fire receiving piece 14 and the abdomen 12 with bolts and nuts. Or it cannot be fixed. Further, if the internal space becomes narrow, it becomes difficult to manufacture the fire receiving piece 14 itself, which causes a problem that productivity decreases.
Therefore, in the present embodiment, as shown in FIG. 5, by arranging the cross-shaped beam material 5 in the space covered with the reinforcing plate material 4, the bending and shear resistance due to the beam material 5 is reduced. By supporting the load, it is configured to withstand the load received from the fire hitting material and the beam material. According to such a configuration, the space covered with the reinforcing plate 4 is widened, and manufacturing is easy, and fixing with the abdomen 12 by bolts and nuts is also facilitated.
[0014]
In this manner, in the fire receiving piece 14 of the present embodiment, either one of the two rectangular plates 1a and 1b is set as the mounting surface side and the other is set as the bottom surface side. Can also be used, so there is no need to distinguish between the left side and the right side, and versatility is improved. Moreover, since it is set as the structure which fixes the hook part 9 to the projection piece 6 with a flat head bolt so that attachment or detachment is possible, for example, when fixing to the abdominal material with which the H-shaped steel is piled up double, the hook part 9 Can be removed, and attachment becomes easy. Furthermore, since the countersunk bolt is used, the inside of the plates 1a and 1b is flat, and the steel material can be placed flat even if the hook portion 9 is left attached to the bottom plate. During transportation, a plurality of products can be stacked stably. Further, since the load applied to the partition plate 2 is supported by using the cross-shaped beam member 5, the manufacture becomes easy and the fixing with the bolt and nut to the belly member is greatly simplified. .
[0015]
Next, a modification of this embodiment will be described. FIG. 9 is an explanatory view showing the modified example. In the embodiment, the trapezoidal protruding piece 6 is formed integrally with the rectangular plates 1a and 1b. And fixed by welding. That is, a protruding piece 15 having a trapezoidal shape and having a notch 15a as a welding allowance formed on the lower surface portion is prepared, and the protruding piece is formed by welding W only on the plates 1a and 1b that are required at the construction site. It is also possible to fix 12. With such a configuration, not only the manufacture of the rectangular plates 1a and 1b is facilitated, but also the protrusions 12 need only be attached to the plates 1a and 1b that are the attachment surfaces, so that the material can be reduced. be able to. Moreover, since it is also possible to attach the hook part 9 with respect to the existing fire catching piece currently used conventionally, it becomes possible to utilize a conventional thing effectively.
In the above embodiment, an example using the cross-shaped beam member 5 has been described. However, the present invention is not limited to this, and may be arbitrarily determined in consideration of workability and ease of manufacture. Can do. In other words, the shape as shown in FIGS.
[0016]
【The invention's effect】
As described above, according to the present invention, one of the two rectangular plates can be used as a left and right fire-receiving piece by setting one to the mounting surface side and the other to the bottom surface side. Therefore, it is not necessary to prepare two types of fire receiving pieces for the left side and the right side at the manufacturing stage, and productivity is improved. Moreover, since the hook part for fixing to a belly material can be removed with a volt | bolt and a nut, when the protrusion of the said hook part gets in the way, it can remove now easily.
[0017]
Furthermore, if a flat head bolt is used to attach the protruding piece and the hook portion, the inside of the rectangular plate becomes flat, so that the steel material can be placed flat on the bottom plate, and during transport Since a plurality of fire receiving pieces can be stacked, handling becomes easy.
Further, if the protruding piece and the rectangular plate are configured as separate bodies and are fixed by welding when necessary, the manufacturing becomes easy and the material can be reduced. In addition, since the projecting piece can be attached by welding, it can also be attached to an existing fire receiving piece, and what has been used conventionally can be used effectively.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a fire-receiving piece according to an embodiment of the present invention.
FIG. 2 is a plan view of a fire receiving piece according to the present embodiment.
FIG. 3 is a front view of a fire catching piece according to the present embodiment.
FIG. 4 is a side view of a fire receiving piece according to the present embodiment.
FIG. 5 is an explanatory view showing a beam material of a fire-receiving piece according to the present embodiment.
FIG. 6 is a perspective view showing a configuration of a hook portion.
FIG. 7 is a front view and a side view of a hook portion.
FIG. 8 is an explanatory view showing a state in which a fire receiving piece is attached to an abdominal material in which two H-shaped steels are stacked.
FIGS. 9A and 9B are configuration diagrams of a projecting piece according to a modification of the present invention, where FIG. 9A is a perspective view and FIG. 9B is a side view.
FIG. 10 is an explanatory diagram showing a modification of the shape of the beam material.
FIG. 11 is a perspective view showing a configuration of a conventional fire receiving piece.
FIG. 12 is an explanatory view showing a state in which a conventional hitting piece is fixed to an abdomen.
[Explanation of symbols]
1a, 1b Rectangular plate 2 Partition plate 3a, 3b Space 4 Reinforcement plate material 5 Beam material 6, 15 Protruding piece 7, 8, 10 Bolt hole 9 Hook part 11 Through hole 12 Raised material 13 Bolt 14, 101 Fire receiving piece 102 Mounting plate 103 Bolt hole 104 Bottom plate 105 Partition plate 106 Reinforcing rib 107 Hook 108 Hook part 109 Fire hitting material 110 Cross beam material 111 Concrete

Claims (3)

In the fire-stopping piece that is interposed between the flank material and the fire hammer and supports the load,
Two rectangular plates that are connected and fixed at substantially right angles on one long side to form an L-shaped cross section and in which a large number of bolt holes are formed;
A protruding piece formed on the edge of the other long side of each rectangular plate;
A hook portion that has a key shape and is detachably fixed to each projection piece with bolts and nuts;
A partition plate arranged orthogonally to the middle part of the two rectangular plates and partitioning the L-shaped space into two spaces;
A reinforcing plate that is attached so as to cover a side portion of one of the two divided spaces;
A fire catching piece characterized by comprising: The fire receiving piece according to claim 1, wherein the protruding piece and the hook portion are coupled by a countersunk bolt. The fire receiving piece according to claim 1, wherein the rectangular plate and the projecting piece are configured as separate bodies and are attached by welding during use.

Images