Floor plate member

Abstract

To provide floor plate members which can be stably connected to each other with a simple structure without necessity of preparing any additional members for connecting them to each other.SOLUTION: In floor plate members 100, of which each has three or more sides, of which at least one has one or more protrusions 102 or cutouts 104 shaped to fit with others, there is a rotating member 108 provided on the bottom surface of the protruding portion 102 so as to be rotatable from the top surface thereof, on the bottom surface of the cutouts 104, when the protrusions 102 and the cutouts 104 of the two floor plate members 100 are fitted together, the rotating members 108 are adjacent to each other on the inner side, there are locking members 106 provided to prevent the protrusions 102 and the cutouts 104 from moving apart in the horizontal direction, and when the rotating member 108 is rotated, the protrusions 102 and cutouts 104 are prevented from moving apart vertically.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a floor plate member. [Background technology]

[0002] Work sites are often located on soft ground, and conventionally, multiple steel floor plate members are laid at the work site to prevent the tipping over of work machinery such as cranes and pile drivers used during the work. Although simply laying multiple steel floor plate members at the work site can improve the footing at the work site to a certain extent, it is desirable that the multiple floor plate members be firmly connected to each other to create a safer work environment.

[0003] In response to this, for example, a technique has been proposed, as shown in Patent Document 1. Patent Document 1 discloses a technique in which a strip is attached to the underside of one side of a floor plate member, a portion of the strip is protruded outward, the floor plate member adjacent to this protrusion is overlapped, and a pin is passed through the overlapped portion to connect the floor plate members. Patent Document 1 also discloses a technique in which, when rectangular floor plate members are laid out so that their long sides are in contact with each other, a joint fitting with a U-shaped cross section is fitted from the outside into the joint on the short side of each floor plate member, and a pin is passed through the overlapped portion between the joint fitting and each floor plate member to connect the floor plate members. This configuration makes it possible to reliably connect floor plate members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-339942 Summary of the Invention [Problem to be solved by the invention]

[0005] However, according to Patent Document 1, pins and joint fittings must be prepared separately to connect the floor plate members together. In other words, if the necessary pins and joint fittings are not brought to the work site, or if they are brought to the work site but then lost, it becomes impossible to connect the floor plate members together.

[0006] Therefore, the present invention has been made to solve the above problems, and its object is to provide floor plate members that can be stably connected to each other with a simple configuration, without the need to prepare separate members for connecting them to each other. [Means for solving the problem]

[0007] The present invention provides a floor plate member having three or more sides, at least one of which is provided with one or more protrusions or cutouts shaped to be able to fit together, wherein a rotating member is provided on the underside of the protrusion so that it can be rotated from the top, and a locking member is provided on the underside of the cutout so that when the protrusions and cutouts of two floor plate members are fitted together, the rotating member is adjacent to the inside and prevents the protrusions and cutouts from moving apart horizontally, thereby solving the above-mentioned problem.

[0008] In the present invention, a rotating member that can rotate from the upper surface is provided on the underside of the protrusion, and a locking member that prevents the protrusion and the cutout from moving apart in the horizontal direction is provided on the underside of the cutout. In other words, the structure provided on the protrusion and the cutout is simple, and when the protrusions and the cutouts of the two floor plate members are arranged so that they fit together, the two floor plate members are connected in the horizontal direction. Then, when the rotating member is rotated, the protrusion and the cutout are prevented from moving apart in the vertical direction, so the two floor plate members are also connected in the vertical direction. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide floor plate members that can be stably connected to each other with a simple configuration, without the need to prepare any additional members for connecting them to each other. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a top view schematic diagram showing an example of a floor plate member according to a first embodiment of the present invention; [Figure 2] 2 is a top view of an example of the floor plate members of FIG. 1 connected to each other; [Figure 3] 2A and 2B are diagrams showing the state in which the protrusion and the notch in FIG. 1 are connected (FIG. 2A is a top perspective view of the vicinity of the protrusion in part A, FIG. 2B is a diagram of a bolt provided on the rotation axis O, FIG. 2C is a side view of the vicinity of the protrusion in part A, and FIG. 2D is a bottom perspective view of the vicinity of the protrusion in part A). [Figure 4] 1 shows a state in which the protrusion and the notch are simply fitted together ((A) is a top perspective view of the vicinity of the protrusion in part A of FIG. 2, (B) is a view of a bolt provided on the rotation axis O, (C) is a view of a hook bolt attached to a rotation member via a through hole, (D) is a side view of the vicinity of the protrusion in part A of FIG. 2, and (E) is a bottom perspective view of the vicinity of the protrusion in part A of FIG. 2). [Figure 5] FIG. 10 is a top view schematic diagram showing an example of a floor plate member according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a top view schematic diagram showing an example of a floor plate member according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] An example of the first embodiment of the present invention will be described in detail below with reference to FIGS.

[0012] First, the schematic configuration of a floor plate member 100 according to this embodiment will be described with reference to FIG.

[0013] The floor plate member 100 is made of iron and, as shown in Fig. 1, has a generally rectangular shape with long sides 100A and short sides 100B when viewed from above, and has four sides. As shown in Fig. 1, two notches 104 are provided in the long side 100A at the top end in the X direction (for example, the long side is 2 m to 4 m), and two protrusions 102 are provided integrally with the long side 100A at the bottom end in the X direction. Also, as shown in Fig. 1, one notch 104 is provided in the short side 100B at the left end in the Y direction (for example, the short side is 0.5 m to 2 m), and one protrusion 102 is provided integrally with the short side 100B at the right end in the Y direction (if the notches 104 and protrusions 102 were not provided, the floor plate member 100 would have a rectangular shape when viewed from above). That is, the floor plate member 100 has four sides, two of which are parallel to each other and each have a protrusion 102 and a notch 104, and one of the remaining two sides has a protrusion 104 and the other has a notch 104. The thickness H1 of the floor plate member 100 shown in Figures 3(C) and 4(D) is, for example, 10 mm to 30 mm (but is not limited to this and may be another thickness).

[0014] Next, the components of the floor plate member 100 will be described in detail. As shown in FIGS. 1 and 2, the protruding portion 102 has a semicircular shape (for example, a radius R of 10 cm or less) and protrudes from the long side 100A and the short side 100B. As shown in FIGS. 3(D) and 4(E), a rotating member 108 is provided on the underside of the protruding portion 102 so as to be rotatable from the upper surface. Specifically, the rotating member 108 is attached to a bolt DB inserted into a through-hole provided in the protruding portion 102 and is rotatable about a rotation axis O. (Note that the thickness H2 of the locking member 106 (width W of, for example, 10 mm to 30 mm), the rotating member 108, and the limiting pin 110 shown in FIGS. 3(C) and 4(D) is, for example, 10 mm to 30 mm (but is not limited thereto and may be another thickness)). The bolt DB has, for example, a flat head so that it does not protrude from the top surface of the floor plate member 100 in the side views of Figures 3(C) and 4(D). The bolt DB has, for example, a groove DC as shown in Figure 3(B) and can be turned with a flat-head screwdriver. In this case, the shape of the groove DC makes it possible to determine the direction of the turning member 108.

[0015] As shown in FIGS. 3A, 3D, 4A, and 4E, the rotating member 108 has a generally oval shape and is provided with a first protrusion 108A near the rotation axis O. As shown in FIG. 3A, the first protrusion 108A is provided to abut against the locking member 106 attached to the notch 104. This prevents the rotating member 108 from rotating excessively counterclockwise and prevents the connected floor plate member 100 from coming loose in the vertical direction. A second protrusion 108B is provided on the rotating member 108 at a position further away from the rotation axis O. As shown in FIGS. 4A and 4C, the second protrusion 108B is adapted to abut against a limiting pin 110 provided on the underside of the protruding portion 102. The limiting pin 110 prevents the rotating member 108 from abutting against the locking member 106 and further rotating clockwise. In other words, a limiting pin 110 is provided on the underside of the protrusion 102 to prevent the pivoting member 108 from abutting against the locking member 106 when the protrusions 102 and the cutout portions 104 of the two floor plate members 100 are engaged with each other.

[0016] 4(C) shows the hook bolt FB attached to the mounting hole 108C in the pivotable member 108 when the through-hole 102A in the protrusion 102 is aligned with the mounting hole 108C in the pivotable member 108, as shown in FIG. 4(A). The hook bolt FB includes a hook portion FP and a bolt portion BP. The hook portion FP is ring-shaped, and can be attached to a wire extending from a crane, for example, to facilitate transport and movement of the floor plate member 100. The bolt portion BP is threaded into the mounting hole 108C to fix the pivotable member 108. With the pivotable member 108 fixed by the hook bolt FB, the floor plate member 100 can be hung by a wire, and the protrusion 102 can be brought close to or abutted against the cutout 104 from above, thereby fitting the protrusion 102 into the cutout 104. In other words, when the protrusions 102 and cutouts 104 of the two floor plate members 100 are engaged, the hook bolt FB is removably attached to the rotating member 108 from the top surface of the protrusions 102, thereby stopping the rotation of the rotating member 108.

[0017] As shown in Figures 3(A) and 4(A), the cutout portion 104 has a shape that can fit with the protrusion 102, i.e., a semicircular shape (for example, with a radius R of 10 cm or less), and is a portion cut out from the long side 100A and the short side 100B. As shown in Figures 3(A) and 4(A), when the protrusions 102 and the cutout portion 104 of the two floor plate members 100 are fitted together, the rotating member 108 is adjacent to the locking member 106 between the locking member 106 and the cutout portion 104, i.e., inside the locking member 106, in a top view. The locking member 106 is arranged to prevent the protrusion 102 and the cutout 104 from moving apart horizontally when the protrusion 102 and the cutout 104 of the two floor plate members 100 are engaged with each other (in other words, on the underside of the cutout 104, the pivot member 108 is adjacent to the inside when the protrusion 102 and the cutout 104 of the two floor plate members 100 are engaged with each other, and the locking member 106 is arranged to prevent the protrusion 102 and the cutout 104 from moving apart horizontally).

[0018] In the state shown in Fig. 4(A), the groove DC of the bolt DB is in the state shown in Fig. 4(B). From this state, the bolt DB is rotated to the state shown in Fig. 3(A), and the groove DC of the bolt DB is rotated to the state shown in Fig. 3(B). In other words, when the rotating member 108 is rotated, the protrusion 102 and the cutout 104 are prevented from separating from each other in the vertical direction.

[0019] As described above, in this embodiment, a rotating member 108 that can rotate from the upper surface is provided on the underside of the protruding portion 102, and a locking member 106 that prevents the protruding portion 102 and the cutout portion 104 from moving apart in the horizontal direction is provided on the underside of the cutout portion 104. When the protruding portions 102 and the cutout portion 104 of the two floor plate members 100 are fitted together, the rotating member 108 is adjacent to the inside of the protruding portion 108, and the locking member 106 prevents the protruding portion 102 and the cutout portion 104 from moving apart in the horizontal direction. In other words, the structure provided on the protruding portion 102 and the cutout portion 104 is simple, and when the protruding portions 102 and the cutout portion 104 of the two floor plate members 100 are arranged so that they fit together, the two floor plate members 100 are connected in the horizontal direction. When the rotating member 108 is rotated, the protruding portion 102 and the cutout portion 104 are prevented from moving apart in the vertical direction, so the two floor plate members 100 are also connected in the vertical direction.

[0020] Furthermore, in this embodiment, the locking members 106, the rotating members 108, etc. are attached to the underside of the floor plate member 100, and the bolts DB that attach the rotating members 108 do not protrude from the upper surface of the floor plate member 100. This makes it possible to prevent workers from tripping and falling on the upper surface of the floor plate member 100, and to prevent the movement of the work machine from being restricted. At the same time, the weight of the work machine does not apply a localized load to the bolts DB, making it possible to avoid damage to the connecting parts of the floor plate member 100.

[0021] In this embodiment, the floor plate member 100 has four sides, two of which are parallel to each other and each have a protrusion 102 and a notch 104, and one of the remaining two sides has a protrusion 102 and a notch 104. Therefore, by storing the floor plate members 100 with their orientation aligned, it is easy to manage the quantity and transport them, and when they are connected together they can be firmly connected in all directions.

[0022] In this embodiment, the floor plate member 100 is made of iron. This makes it less likely to break even when a heavy work machine moves on the floor plate member 100, and it is possible to stably support the work machine. However, the floor plate member is not limited to this, and may be made of other metals, plastics, rubber, etc.

[0023] In this embodiment, a limiting pin 110 is provided on the underside of the protruding portion 102 to prevent the rotating member 108 from abutting against the locking member 106 when the protruding portions 102 and the cutout portions 104 of the two floor plate members 100 are fitted together. This reduces the possibility that the protruding portions 102 and the cutout portions 104 of the two floor plate members 100 will not fit together (the upper surfaces of the two floor plate members 100 will be misaligned) depending on the orientation of the rotating member 108, and allows the protruding portions 102 and the cutout portions 104 of the two floor plate members 100 to fit together stably. However, this is not limiting, and the limiting pin may be omitted. Even without the limiting pin, it is possible to determine whether the protruding portions will fit together by knowing the orientation of the rotating member, so it is possible to fit the protruding portions and the cutout portions of the two floor plate members together by appropriately correcting the orientation of the rotating member.

[0024] Furthermore, in this embodiment, hook bolts FB are provided which are detachably attached to the rotating member 108 from the top surface of the protruding portions 102 when the protruding portions 102 and the cutout portions 104 of the two floor plate members 100 are fitted together, and which stop the rotation of the rotating member 108. Therefore, by using the hook bolts FB, the floor plate members 100 can be easily moved, and the protruding portions 102 can be easily fitted together with the cutout portions 104. However, this is not limiting, and bolts without hooks may be used instead of hook bolts. In fact, it is not necessary to provide means for stopping the rotation of the rotating members.

[0025] In this embodiment, a bolt DB is used for the pivot axis O, and the orientation of the pivoting member 108 can be determined by the orientation of the groove DC of the bolt DB. This allows the connection state of the floor plate members 100 to be determined at a glance, reducing the risk of overlooking a connection. However, this is not limited to this, and the groove DC may be a hexagonal groove for a hexagonal wrench. In this case, a greater force can be applied to rotate the pivoting member, making it possible to reliably connect the floor plate members together without being affected by the weight of the floor plate members or the condition of the ground below the floor plate members. Of course, in this case, a marking may be newly provided on the head of the bolt DB to indicate the orientation of the pivoting member.

[0026] Therefore, according to this embodiment, it is possible to provide floor plate members 100 that can be stably connected to each other with a simple configuration, without the need to prepare any additional members for connecting them to each other.

[0027] Although the present invention has been described using the first embodiment, the present invention is not limited to the first embodiment. In other words, it goes without saying that improvements and design changes are possible within the scope of the present invention.

[0028] For example, in the first embodiment, as shown in Figures 1 and 2, the floor plate member 100 has four sides, two of which are parallel to each other and each have a protrusion 102 and a notch 104, and one of the remaining two sides has a protrusion 102 and a notch 104, but the present invention is not limited to this. For example, as shown in Figure 5, the floor plate member 200 may have four sides, two of which are parallel to each other and each have a protrusion 202 and a notch 204, so that the floor plate member 200 has a point-symmetrical shape. Note that the second embodiment differs from the first embodiment only in the number of protrusions 202 and cutouts 204 provided on the floor plate member 200, and therefore only the first digit of the same components is changed and their description will be omitted.

[0029] In this embodiment, the floor plate members 200 have a point-symmetric shape, so that the shape remains the same even if the orientation of the floor plate members 200 is reversed up, down, left, or right. Therefore, there is no need to worry about the orientation of the floor plate members 200, and the floor plate members 200 can be connected extremely quickly.

[0030] In the above embodiment, the floor plate member has a shape with four sides, but the present invention is not limited to this. For example, as in the third embodiment shown in Fig. 6, the floor plate member 300 may have only three sides, with protrusions 302 and cutouts 304 on only two of those sides. However, this is not limiting, and the floor plate member may have a shape with more than one pentagon in plan view. Protrusions and cutouts do not necessarily have to be provided on two or more sides. In other words, it is sufficient that the floor plate member has three or more sides, and at least one of those sides has one or more protrusions or cutouts of shapes that can fit together.

[0031] In the above embodiment, the long and short sides of the floor plate member are straight, but the present invention is not limited to this. For example, the long and short sides may be curved, or the corresponding sides may not be the long and short sides but may have the same length.

[0032] Furthermore, in the above embodiment, the protrusions are semicircular, but the present invention is not limited to this. For example, the protrusions may be polygonal, such as triangular or rectangular.

[0033] In the above embodiment, the protrusion and the notch are fitted together by being uniformly close to each other at their ends, but the present invention is not limited to this. For example, if the protrusion and the notch are fitted together so that only a portion of their ends are extremely close to each other and a connected state is formed, this may be considered to be a fitted state. [Industrial Applicability]

[0034] The present invention is suitable for improving the footing at work sites where buildings are demolished or constructed. [Explanation of symbols]

[0035] 100, 200, 300... Floor plate members 100A, 200A, 300A...long side 100B, 200B, 300B...short side 102, 202, 302...protrusion 102A...Through hole 104, 204, 304...Notch 106...Locking member 108... Rotating member 108A...First protrusion 108B...Second protrusion 108C...Mounting hole 110...Restriction pin BP...Bolt section DB…Bolt DC…Groove FB...Hook bolt FP...Hook part H1, H2...Thickness O...Rotation axis R…radius W…width

Claims

1. A floor plate member having three or more sides, at least one of which has one or more projections or notches formed on at least one side such that the projections or notches can fit together, a rotating member that is rotatable from an upper surface of the protruding portion is provided on a lower surface of the protruding portion; a locking member is provided on the underside of the cutout portion, which prevents the protrusion and the cutout portion from moving apart in the horizontal direction when the protrusions and the cutout portions of the two floor plate members are fitted together, and the rotating member is adjacent to the inside of the locking member; When the rotating member is rotated, the protrusion and the notch are prevented from separating from each other in the vertical direction. A floor plate member characterized by:

2. In claim 1, The floor plate member has four sides, two of which are parallel to each other and each have the protrusion and the notch, and one of the remaining two sides has the protrusion and the notch. A floor plate member characterized by:

3. In claim 1, The floor plate member is made of iron. A floor plate member characterized by:

4. In claim 1, further comprising: A limiting pin is provided on the underside of the protruding portion to prevent the rotating member from contacting the locking member when the protruding portions and the notches of the two floor plate members are fitted together. A floor plate member characterized by:

5. In claim 1, further comprising: When the protrusions and the notches of the two floor plate members are fitted together, a hook bolt is detachably attached to the rotating member from the upper surface of the protrusion, and stops the rotation of the rotating member. A floor plate member characterized by:

6. The floor plate member has four sides, and two parallel sides are each provided with the protrusion and the notch, and has a point-symmetric shape. A floor plate member characterized by:

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