Scaffolding deck

Abstract

To provide a deck for a scaffold, which is easily installed on the scaffold such as a one side scaffold, and can be used as a foothold of a worker, a base for placing an article, etc.SOLUTION: This scaffold deck 1 is provided with a deck body 2 constituting a deck surface, and at least two mounting hook side 11X and side 11Y provided on one side edge part of the deck body 2 with the tip downward and inserted into the socket side 3A and side 3B of two scaffold supports 10 from above.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a scaffolding deck that can be easily installed on a scaffold, particularly on one side of a scaffolding, and can be used as a foothold for workers or a platform for placing objects. [Background technology]

[0002] For example, in one-sided scaffolding such as that shown in Patent Document 1 and Patent Document 2, the scaffolding board is installed in a protruding manner on one side of the support, so it is generally not possible to make the width of the scaffolding board wide. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 5-21049 [Patent Document 2] Japanese Patent Application Publication No. 11-229615 Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, it was difficult to secure space other than scaffolding boards that could be used, for example, as a foothold for workers or as a temporary platform for tools, materials, and other items. The only option was to use a stepladder, but this posed a problem in that it severely limited the conditions for where it could be used and the space that could be secured.

[0005] This invention has been made in consideration of the above-mentioned problems, and aims to provide a scaffolding deck that can be easily installed on scaffolding such as one-sided scaffolding, and can be used as a foothold for workers or a platform for placing items. A further object of the present invention is to provide a scaffolding deck as described above that can be used for each scaffolding, even if the pitch between the scaffolding posts or the size of the sockets for the scaffolding posts differs, by simply preparing one type of scaffolding deck. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention comprises the following aspects.

[0007] 1) A scaffolding deck that is attached across two parallel scaffolding posts having sockets on the sides that are open at the top and bottom, A deck body that constitutes the deck surface; A scaffolding deck having at least two mounting hooks provided at one side edge of the deck body with their tips facing downward and inserted from above into sockets of two scaffolding posts.

[0008] 2) The mounting hooks are comprised of two end mounting hooks provided at both ends of one side edge of the deck body, and two intermediate mounting hooks provided at two intermediate portions spaced a predetermined distance from both ends of one side edge of the deck body in the longitudinal direction of the deck body, A scaffolding deck as described in 1) above, in which two end mounting hooks, two intermediate mounting hooks, or one end mounting hook and the intermediate mounting hook furthest from the end mounting hook are selectively inserted into the sockets of the two scaffolding posts, depending on the pitch between the two scaffolding posts.

[0009] 3) A scaffolding deck as described in 2) above, in which an engagement hook is provided below each intermediate mounting hook, which can prevent the deck body from floating up by engaging with the scaffolding support from the end side of each end of the deck body that is closest to each intermediate mounting hook.

[0010] 4) Each mounting hook has a first mounting hook portion and a second mounting hook portion provided at a predetermined distance from the first mounting hook portion in the longitudinal direction of the deck body, A scaffolding deck according to any one of 1) to 3) above, in which only the first mounting hook portion or both the first mounting hook portion and the second mounting hook portion are selectively inserted into the socket depending on the size of the socket of the two scaffolding posts.

[0011] 5) A scaffolding deck according to any one of 1) to 4) above, in which two handrail fixing insertion openings are provided on one side edge of the deck body, into which both ends of a gate-shaped handrail unit can be inserted and fixed. [Effects of the Invention]

[0012] According to this invention, in a scaffold such as a one-sided scaffold assembled using scaffolding supports with sockets on the sides (see Patent Documents 1 and 2), a scaffolding deck can be easily attached so as to straddle the two supports, and the deck can be used as, for example, a foothold for workers or a platform for temporarily placing tools, materials, and other items, thereby improving workability and safety on the scaffold. Patent Documents 1 and 2 do not disclose anything equivalent to the scaffolding deck. The scaffolding deck of aspect 2) above is highly convenient because it can be installed on each type of scaffolding without having to prepare multiple types of scaffolding decks corresponding to scaffolding with different pitches (spacings) between the scaffolding supports.The scaffolding deck of aspect 3) above has the above effect, and in addition, even if a downward load such as the worker's tread pressure is applied to the end of the deck body that is closer to the intermediate mounting hook inserted into the support socket, the engaging hook prevents the deck body from floating up, thereby further improving safety. According to the scaffolding deck of the above aspect 4), even in scaffolding where scaffolding posts with different socket sizes are used, it is not necessary to prepare multiple types of scaffolding decks to accommodate them, but rather it is possible to prepare only one type and install it on any scaffolding, making it highly convenient. Furthermore, according to the scaffolding deck of the above aspect 5), the handrail unit can be easily installed along one side edge of the deck body, further enhancing safety. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view of a scaffolding deck according to an embodiment of the present invention; [Figure 2]1A and 1B show a scaffolding deck with some parts omitted, where (a) is a plan view, (b) is a front view, and (c) is a side view. [Figure 3] This is an oblique view of the area around the intermediate mounting hook of the scaffolding deck from below. [Figure 4] This is a perspective view showing the scaffolding deck installed on a scaffold where the pitch between the scaffolding posts is medium size (1500 mm) and the sockets of the scaffolding posts are of the wide type. [Figure 5] 5 shows the scaffolding deck in the state shown in FIG. 4, where (a) is a plan view, (b) is a front view, and (c) is a side view. [Figure 6] This shows the state in which the intermediate mounting hook of the scaffolding deck is inserted into the wide socket of the scaffolding support and attached, where (a) is a plan view, (b) is a front view, and (c) is a perspective view from below. [Figure 7] This is a perspective view showing the scaffolding deck installed on a scaffolding where the pitch between the scaffolding posts is long (1800 mm) and the sockets of the scaffolding posts are wide type. [Figure 8] This is a perspective view showing the scaffolding deck installed on a scaffolding where the pitch between the scaffolding posts is short (1200 mm) and the sockets of the scaffolding posts are wide type. [Figure 9] 1 shows the state in which the intermediate mounting hook of the scaffolding deck is inserted into the vertical socket of the scaffolding support, where (a) is a plan view, (b) is a front view, and (c) is a perspective view seen from below. DETAILED DESCRIPTION OF THE INVENTION

[0014] A scaffolding deck according to an embodiment of the present invention will be described below with reference to FIGS. In the following description, the bottom of Figure 2(a) and Figure 6(a) will be referred to as the "front" and the top of Figure 2(a) and Figure 6(a) will be referred to as the "rear", and left and right will refer to the left and right when viewed from the front (for example, the left and right of Figure 2(b) and Figure 6(b)).

[0015] The scaffolding deck (1) of this embodiment is attached across two scaffolding posts (10) arranged side by side and having sockets (11X) (11Y) that open at the top and bottom on their sides, and is equipped with a deck main body (2) that forms the deck surface (20), and at least two (more specifically, four) mounting hooks (3A) (3B) that are provided on the front edge of the deck main body (2) with their tips facing downward and are inserted from above into the sockets (11X) (11Y) of the two scaffolding posts (10).

[0016] The deck body (2) comprises a horizontal band-shaped deck plate (21) and two front and rear beams (22) joined and fixed to the front and rear edges of the deck plate (21) by welding or the like. The deck plate material 21 is made of a metal plate such as a steel plate, but other plate-like materials may also be used. As shown in detail in Figures 2 and 6, the deck plate material 21 has a large number of holes 211, which provide a non-slip function for the deck surface 20 and also reduce the weight of the deck body 2. The left and right ends of the deck plate material 21 are bent downward. The beams (22) are made of, for example, hollow steel members with a square cross section. The deck body (2) of this embodiment also includes a plurality of (more specifically, four) auxiliary crossbeam members (23) that are secured to the front and rear beam members (22) on the underside thereof. The auxiliary crosspieces (23), like the girder members (22), are also made of, for example, hollow steel material with a square cross section, and are provided at positions corresponding to the four mounting hooks (3A) (3B), which will be described in detail later (at both the left and right ends of the deck body (2) and at two intermediate positions a predetermined distance from both ends).

[0017] In scaffolding such as one-sided scaffolding, the pitch between the scaffolding posts (10) is usually set to either long size (1800 mm), medium size (1500 mm), or short size (1200 mm) depending on the installation conditions and the size of the scaffolding boards used. The scaffolding deck 1 of this embodiment can be installed on scaffolding in which the pitch between the scaffolding posts 10 is set to any of the three sizes described above, by configuring the mounting hooks 3A and 3B as follows. Correspondingly, the overall length of the deck body 2 is set to be approximately the same as or slightly longer than the pitch between the long-size (1800 mm) scaffolding posts 10. That is, the mounting hooks consist of two end mounting hooks (3A) provided at both ends of the front edge of the deck body (2), and two intermediate mounting hooks (3B) provided at two intermediate portions spaced a predetermined distance in the longitudinal direction (left-right direction) of the deck body (2) from both ends of the front edge of the deck body (2). In the case of a scaffolding in which the pitch between the scaffolding supports 10 is medium (1500 mm), one end mounting hook 3A and the intermediate mounting hook 3B furthest from the end mounting hook 3A are inserted into the sockets 11X and 11Y of the two scaffolding supports 10 as shown in Figures 4 and 5. Note that in Figures 4 and 5, the right-side intermediate mounting hook 3B and the left-side end mounting hook 3A are inserted into the sockets 11X of both supports 10, but the left-side intermediate mounting hook 3B and the right-side end mounting hook 3A may also be inserted into the sockets 11X of both supports 10. In the case of a scaffolding in which the pitch between the scaffolding supports (10) is long (1800 mm), as shown in Figure 7, the two end mounting hooks (3A) are inserted into the sockets (11X) of the two scaffolding supports (10) and attached. In addition, in the case of a scaffolding in which the pitch between the scaffolding supports (10) is short (1200 mm), as shown in Figure 8, two intermediate mounting hooks (3B) are inserted into the sockets (11X) of the two scaffolding supports (10) and attached.

[0018] Brackets 24 are attached to the front edge of the deck body 2 at four locations corresponding to the mounting hooks 3A and 3B. The brackets 24 are bent plates that are roughly U-shaped and open forward when viewed from the side, and their vertical walls 241 are joined and fixed by welding or the like to the outer surface of the front girder 22 and the front end of the auxiliary crossbeam 23. The mounting hooks 3A and 3B are attached to the underside of the upper horizontal wall 242 of the bracket 24, with their tips pointing downward. Here, the sockets 11X and 11Y of the scaffolding support 10 have a pair of side walls 12 and a central wall 13 connecting the leading edges of the side walls 12. They are typically provided at a predetermined vertical pitch on the front, rear, left, and right sides of the support 10. The central walls 13 of the sockets 11X and 11Y are inclined obliquely downward toward the support 10. When installing the scaffolding deck 1 according to this invention, the sockets 11X and 11Y at the rear of each support 10 that are located at the required height are used. Although not shown, the sockets 11X and 11Y at the front of each support 10 are used to install scaffolding boards, for example, via brackets. However, the sockets are broadly divided into two types differing in size: one is a wide-type socket (11X) in which the spacing between both side walls (12) is nearly equal to the inner diameter of the support (10), as shown in Figure 6, etc., and the other is a vertically long type socket (11Y) in which the spacing between both side walls (12) is significantly smaller than the inner diameter of the support (10) and the protruding length of both side walls (12) is longer than that of the wide-type socket (11X), as shown in Figure 9. The scaffolding deck (1) of this embodiment can be installed regardless of whether the socket of the scaffolding support (10) is a wide type (11X) or a vertically long type (11Y) by employing the following configuration for the mounting hooks (3A) and (3B). That is, each of the mounting hooks 3A and 3B has a first mounting hook portion 31 and a second mounting hook portion 32. The second mounting hook portion 32 is provided on either the left or right side of the first mounting hook portion 31 at a predetermined distance in the left-right direction (the longitudinal direction of the deck main body 2). In this embodiment, the first mounting hook portion (31) and the second mounting hook portion (32) each consist of a plate piece whose thickness direction is in the left-right direction, and are attached in a hanging manner to the underside of the upper horizontal wall portion (242) of the bracket (24). When the socket of the scaffolding support (10) is of the wide type (11X), both the first mounting hook portion (31) and the second mounting hook portion (32) are inserted into the socket (11X). When the socket of the scaffolding support (10) is of the vertically long type (11Y), only the first mounting hook portion (31) is inserted into the socket (11Y).

[0019] More specifically, the first mounting hook portion (31) is attached to the center of the left-right width of the lower surface of the upper horizontal wall portion (242) of the bracket (24). The first mounting hook portion (31) has a thickness that allows it to be inserted into the vertically long socket (11Y). A downward step (311) is formed at the rear edge of the first mounting hook portion (31) at the midpoint of its height. The first mounting hook portion (31) is inserted into a vertically long socket (11Y) to a depth where the upper edge of the socket (11Y) abuts against the underside of the upper horizontal wall portion (242) of the bracket (24), while it is inserted into a wide socket (11X) only to a depth where the upper edge of the central wall (13) of the socket (11X) abuts against the step (311) on the rear side edge. In the left end mounting hook (3A) and the middle mounting hook (3B), the second mounting hook portion (32) is attached near the left edge of the underside of the upper horizontal wall portion (242) so as to be positioned to the left of the first mounting hook portion (31) with a predetermined gap. In the right end mounting hook (3A) and the middle mounting hook (3B), the second mounting hook portion (32) is attached near the right edge of the underside of the upper horizontal wall portion (242) so as to be positioned to the right of the first mounting hook portion (31) with a predetermined gap. This gap is set so that the second mounting hook portion (32) does not interfere with the socket (11Y) when the first mounting hook portion (31) is inserted into the vertically long socket (11Y). A downward step 321 is formed on the rear edge of the second mounting hook portion 32 at the same height as the step 311 on the rear edge of the first mounting hook portion 31. The first mounting hook portion 31 and the second mounting hook portion 32 are inserted into the wide-type socket 11X to a depth at which the upper edge of the central wall 13 of the socket 11X abuts against the steps 311, 321 on the rear edges of both mounting hook portions 31, 32. In addition, the second mounting hook portion 32 has a thickness such that when the first mounting hook portion 31 and the second mounting hook portion 32 of the required two mounting hooks 3A and 3B are inserted into the wide-type sockets 11X of the two scaffolding posts 10, the second mounting hook portion 32 can come into close proximity to or loosely abut the inner surface of the outer side wall 12 of the socket 11X in the left-right direction. With the above configuration, left-right displacement and rattle of the scaffolding deck 1 when installed are suppressed.

[0020] In addition to the above configuration, the scaffolding deck 1 of this embodiment is provided with lower holding parts 6 that are provided below the mounting hooks 3A and 3B and are brought into contact with the sides of the scaffolding posts 10. These lower holding parts 6 allow the scaffolding deck 1 to be installed in a more stable state. The illustrated lower support portion 6 is made of a vertical plate whose thickness is oriented in the left-right direction and is joined and fixed across the lower front surface of the vertical wall portion 241 of each bracket 24 and the upper surface of the lower horizontal wall portion 243. The vertical front edge of this lower support portion 6 is adapted to abut against the rear side of the support column 10.

[0021] The scaffolding deck (1) of this embodiment also includes engaging hooks (4) provided below the two intermediate mounting hooks (3B). The engaging hooks (4) are adapted to engage with the scaffolding posts (10) from the end of each of the left and right ends of the deck body (2) that is closer to each intermediate mounting hook (3B), thereby preventing the deck body (2) from floating up. More specifically, the engaging hooks 4 are horizontal plates bent into a generally L-shape in plan view and are attached to the lower horizontal wall 243 of the bracket 24. The engaging hook 4 located below the right-side intermediate mounting hook 3B is configured to engage with the support 10 from the right side (the right end side of the deck main body 2). The engaging hook 4 located below the left-side intermediate mounting hook 3B is configured to engage with the support 10 from the left side (the left end side of the deck main body 2). The concave edge of the engaging hooks 4 is generally arc-shaped so as to fit roughly along the side of the support 10. In an installation mode in which the intermediate mounting hooks (3B) on one or both sides are inserted into the sockets (11X) (11Y) of the scaffolding support (10), if a downward load such as foot pressure by a worker acts on one of the two ends of the deck body (2) that is closest to the intermediate mounting hook (3B), the reaction may cause the other end of the deck body (2) to lift up, but at that time, the engaging hooks (4) engage with the support (10) from the side of the one end of the deck body (2), thereby preventing the deck body (2) from lifting up.

[0022] Furthermore, the scaffolding deck (1) of this embodiment is provided with two handrail unit fixing insertion openings (5) at the front edge of the deck body (2) into which both ends of a gate-shaped handrail unit (7) can be inserted and fixed. Each insertion opening (5) is made of a vertical cylinder and is fixed to the outer surface of the front beam (22) of the deck body (2) by welding or the like. The handrail unit (7) shown in the figure includes two vertical support posts (71) on the left and right, a horizontal upper handrail part (72) connecting the upper ends of the support posts (71), and a horizontal middle handrail part (73) connecting the middle parts of the support posts (71) in height. The lower ends of the two support posts (71) are inserted from above into the two handrail unit fixing insertion openings (5), so that the handrail unit (7) is installed along the front edge of the deck main body (2). Note that the configuration of the handrail unit is not limited to the above embodiment and can be modified as appropriate. The arrangement of the two handrail unit fixing insertion openings (5) may be set appropriately depending on the size of the handrail unit (7), etc., but in this embodiment, one insertion opening (5) is arranged between the left end mounting hook (3A) and the middle mounting hook (3B), and the other insertion opening (5) is arranged between the right end mounting hook (3A) and the middle mounting hook (3B). With this arrangement, the handrail unit (7) can be installed without any problems on scaffolding where the pitch between the scaffolding supports (10) is set to any of the three sizes mentioned above, and the handrail unit (7) allows the scaffolding deck (1) to be used safely.

[0023] According to this embodiment, the scaffolding deck (1) can be installed extremely easily using the sockets (11X) (11Y) of the existing scaffolding support (10) on scaffolding such as one-sided scaffolding, and can be effectively used as a foothold for workers or a platform for placing items. Furthermore, according to the scaffolding deck (1) of this invention, even in scaffolding in which the pitch between the scaffolding supports (10) is different or in which the sockets (11X) and (11Y) are different in size, it can be installed with only one type of scaffolding deck, making it highly convenient and economical. [Industrial Applicability]

[0024] The present invention is suitably used as a scaffolding deck that can be easily installed on a scaffolding such as a one-sided scaffolding. [Explanation of symbols]

[0025] (1): Scaffolding deck (2): Deck body (21): Deck boards (211):hole (22): Girder material (23):Auxiliary beam material (24): Bracket (241):Vertical wall (242): Upper horizontal wall (243): Lower horizontal wall (3A): End mounting hook (3B): Intermediate mounting hook (31): First mounting hook part (311): Step at rear edge (32): Second mounting hook part (321): Step at rear edge (4): Engagement hook (5): Insertion port for fixing the handrail unit (6): Lower holding part (7): Handrail unit (71): Support section (72): Upper handrail (73): Intermediate handrail section (10): Scaffolding support (11X): Wide type socket (11Y): Vertical type socket (12):Side wall (13):Central wall

Claims

1. A scaffolding deck that is attached across two parallel scaffolding posts and has sockets on the sides that are open at the top and bottom, A deck body that constitutes the deck surface; The scaffolding deck is provided with at least two mounting hooks provided at one side edge of the deck body with their tips facing downward and inserted from above into sockets of the two scaffolding poles.

2. The mounting hooks are comprised of two end mounting hooks provided at both end portions of one side edge of the deck body, and two intermediate mounting hooks provided at two intermediate portions spaced a predetermined distance from both end portions of one side edge of the deck body in the length direction of the deck body, 2. A scaffolding deck according to claim 1, wherein two end mounting hooks, two intermediate mounting hooks, or one end mounting hook and the intermediate mounting hook furthest from the end mounting hook are selectively inserted into the sockets of the two scaffolding supports, depending on the pitch between the two scaffolding supports.

3. A scaffolding deck as described in claim 2, wherein an engaging hook is provided below each intermediate mounting hook, which can prevent the deck body from floating up by engaging with a scaffolding support from the end side of each end of the deck body that is closer to each intermediate mounting hook.

4. Each mounting hook has a first mounting hook portion and a second mounting hook portion provided at a predetermined distance from the first mounting hook portion in the longitudinal direction of the deck body, 2. A scaffold deck as described in claim 1, wherein only the first mounting hook portion or both the first mounting hook portion and the second mounting hook portion are selectively inserted into the socket depending on the size of the socket of the two scaffolding supports.

5. 2. A scaffolding deck according to claim 1, wherein one side edge of the deck body is provided with two handrail unit fixing insertion openings into which both ends of a gate-shaped handrail unit can be inserted and fixed.

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