JP2019078109A - Supporting tool of scaffold board - Google Patents

Abstract

To provide a supporting tool of a scaffold board for constructing a scaffold board which is easily attached to a lifting apparatus such as a ladder, a trestle and a tripod with various shapes that includes a plurality of rungs between support posts.SOLUTION: A supporting tool of a scaffold board comprises: an attaching member 11 detachably mounted by putting from the above so as to pinch with two side faces bent at both sides of a flat plate on one of a plurality of rungs 52 of a lifting apparatus 50; a mounting member 12 one end side of which is fixed to a substantial center of one side face of the attaching member 11, the other end side of which extends so as to project substantially perpendicular from the one side face and on which a scaffold board 90 is mounted; and a hanging member 13 one end side of which is rotatably attached to the other end side of the mounting member 12 via a length adjusting portion 14 and the other end side of which is detachably attached so as to be hooked on a rung 52 that is upper by at least one step from the rung 52 on which the attaching member 11 is mounted.SELECTED DRAWING: Figure 1

Description

  The present invention is attached to a lifting device having two columns such as a ladder, a stepladder, a tripod and the like and a plurality of step bars installed between them, and a scaffolding plate is installed between at least two lifting devices. The present invention relates to a scaffold board support to support.

  When working at heights that can not be reached, arrange ladders and stepladders and raise the worker on them to work, but if the working range is wide, position the ladders and stepladders many times It will shift, and work efficiency is bad. In addition, assembling a steel pipe or the like and setting up a temporary scaffold is not suitable for work that can be completed in a short time, because it takes a large amount of time, labor, and costs. Therefore, it is very useful to attach a scaffolding board to a lifting tool such as a ladder or a stepladder to construct a simple scaffolding for a work having a wide working range and in a short time.

  As said prior art, the scaffold board support structure which supports the scaffold board used attaching to a ladder is disclosed by patent document 1. FIG. The scaffolding plate supporting structure includes two columns and a plurality of treads provided between the columns, and is attached to a ladder having an insertion hole passing through the axial inside of each tread and the columns. A mounting member including a U-shaped bracket having holes at both ends and a shaft member inserted between the holes, and an inner end fixed to a central portion of the bracket of the mounting member It has a single mounting member and a clamp that one end is rotatably fixed to the outer end of the mounting member and is gripped by the tread at the other end via an expandable arm. And a support member. For attachment to the ladder, attach the mounting member to one of the ladders of the ladder by inserting the holes at both ends of the bracket into the insertion holes that pass through the columns of the ladder and the rail and inserting the mounting member into one of the ladders of the ladder. The clamp portion of the member is gripped by the footsteps one level below. In this way, two ladders with the scaffolding plate supporting structure attached are stood on the wall at a predetermined interval, the length of the arm of the supporting member is adjusted, and the placing member is made horizontal, and between the scaffolding plates The construction of

JP 2002-155688 A

  The above-mentioned prior art has a problem that it can be applied only to a ladder having a through hole which penetrates the inside of a tread and a column. Also, it takes some time to attach.

  This invention is made in view of the said situation, Comprising: The scaffold board support which can be easily attached to the raising / lowering instrument which has several step bars between pillars, such as ladders of various shapes, a stepladder and a tripod, is provided. The purpose is to

  In order to solve the above problems, the scaffold board support according to the present invention is attached to a lifting device having two columns and a plurality of treads installed between the two columns, at least two of them. A scaffolding plate support for supporting a scaffolding board installed between the lifting and lowering devices, wherein one of the plurality of step bars of the lifting and lowering devices is sandwiched by two side surfaces bent on both sides of a flat plate And one end side is fixed to the approximate center of one side surface of the mounting member, and the other end side is extended so as to project from the one side surface substantially perpendicularly. The mounting member on which the scaffolding plate is mounted, and one end side thereof is rotatably attached to the other end side of the mounting member via the length adjustment portion, and the other end side is mounted the mounting member It is attached and detached so that it hooks on the tread at least one step upper of the said tread A hanging member attached to standing, and having a.

  Further, the length adjusting portion of the hanging member is a turnbuckle provided with a hook on one end side, and the hanging member is detachably attached to the other end side of the placing member by the hook. I assume.

  Further, the mounting member is characterized in that it is a lip channel steel having a substantially C-shaped cross section.

  Since the scaffold board support according to the present invention is attached to the lifting device by the mounting member and the hanging member, and both are attached to the step of the lifting device, they are attached regardless of the width and shape of the support of the lifting device. It is possible. In addition, the mounting member is removably placed from above with one of a plurality of step bars sandwiched between the two side surfaces folded on both sides of the flat plate, and the hanging member is mounted with the mounting member. Since it is detachably attached so as to be hooked on the tread at least one step above the tread, it can be attached regardless of the cross sectional shape of the tread. In addition, since the hanging member has the length adjusting portion, the mounting member on which the scaffold plate is mounted can be horizontally mounted even when the distance between the steps of the lifting device is different. In addition, since the mounting member and the hanging member need only be attached to the cross rail and the length of the length adjusting portion of the hanging member may be adjusted so that the mounting member is horizontal, the mounting can be performed very easily.

  In addition, since the length adjustment portion of the hanging member is a turnbuckle provided with a hook on one end side and the hanging member is detachably attached to the other end side of the mounting member by the hook, the mounting member and the mounting member The fixed mounting member and the hanging member can be separated, and are not bulky at the time of storage or the like. In addition, since the mounting member and the hanging member can be separately attached to the lifting and lowering device and then connected by the hook, the entire scaffolding plate support need not be held by hand, so the attachment is simple.

  In addition, since the mounting member is a lip grooved steel having a substantially C-shaped cross section, it is difficult to be removed from the tread by its lip piece, which is safe. In addition, it can be hooked to the treads even when attached to the treads, and the attachment is simple.

The perspective view which shows a mode that the scaffold board support which concerns on embodiment of this invention was attached to forceps, and the scaffold board was constructed. The side view which shows the AA cross section of FIG. The side view which shows a mode that the scaffold board support which concerns on embodiment of this invention was isolate | separated and attached to forceps. The perspective view which shows a mode that the scaffold board support which concerns on embodiment of this invention was attached to the stepladder. The side view which shows the BB cross section of FIG.

  Hereinafter, the best embodiment of the present invention will be described based on the drawings. The example which attached the scaffold board support tool 10 which concerns on this embodiment to the forceps 50 was shown to FIG. 1, FIG. The forceps 50 is an elevating instrument having two columns 51 arranged in parallel at a constant distance and a plurality of treads 52 straddling the columns 51. The scaffold plate support 10 includes an attachment member 11, a placement member 12 fixed to the attachment member 11, and a suspension member 13 including a length adjustment unit 14.

  The mounting member 11 includes a rectangular plate-like top surface 11a, side surfaces 11b1 and 11b2 extending vertically downward from the pair of opposing sides of the top surface 11a to the top surface 11a, and side surfaces 11b1 and 11b2, respectively. It has lip pieces 11c1 and 11c2 extending perpendicularly to the direction approaching each other from the extending lower side, and the cross-sectional shape in which the longitudinal opening 11d is formed between the lip pieces 11c1 and 11c2 is approximately C It uses a lip channel steel which is a longitudinal member of a letter. As shown in FIG. 2, the mounting member 11 is mounted such that the top surface 11a is placed on the tread 52 by covering it from above through the longitudinal opening 11d, and in the state, the tread 52 is a mounting member The width of the longitudinal opening 11 d is wider than the depth with respect to the elevating surface of the tread 52, and the height of the side portions 11 b 1 and 11 b 2 is greater than the height of the tread 52. It's getting higher. According to the Japanese Industrial Standard (JIS), JIS S1121 stipulates that the inner width of the pillar of the insulator is 300 mm or more and the inner width of the pillar of the top step of the stepladder is 280 mm or more. The length of the direction is preferably 280 mm or less. In addition, the same standard stipulates that the depth of the foot with respect to the elevating surface be 20 mm or more for ladders and 30 mm or more for stepladders. The width of the opening 11 d in the longitudinal direction of the mounting member 11 is preferably 50 mm or more because the width is set to 5 cm or more. Further, although a lip grooved steel is used here, a grooved steel without a lip piece having a substantially U-shaped cross section obtained by bending both sides of a flat plate may be used.

  As the mounting member 12, a square steel pipe which is a longitudinal member having a substantially rectangular cross section is used. Although a square steel pipe is used here, the present invention is not limited thereto, and a regular steel pipe having a circular cross section, a shaped steel such as an H-shaped steel, an L-shaped steel or a channel steel may be used. However, since the scaffolding board 90 is mounted on the mounting surface 12 a of the mounting member 12, the mounting surface 12 a is preferably flat. One end side of the mounting member 12 in the longitudinal direction is fixed substantially at the center of the side surface portion 11b1 of the mounting member 11, and the top surface portion 11a of the mounting member 11 and the mounting surface 12a of the mounting member 12 are substantially parallel on the same side It has become. A hooking member 121 to which the hook 14a1 of the length adjusting unit 14 is detachably attached is fixed to the other end side of the mounting member 12 in the longitudinal direction. In the hooked member 121, a U-shaped deformed bar steel having a rib on the surface of a bar steel having a substantially circular cross section is formed in a substantially U shape, and is perpendicular to the longitudinal direction of the mounting member 12 It fixes so that the part of the substantially U-shaped arc may protrude from the mounting surface 12a, and the hook 14a1 is attached to the part of the substantially U-shaped arc. Although a deformed bar is used here, a normal round steel or a bar of other cross-sectional shape may be used. Further, the hook 14a1 may be hooked to the end of the mounting member 12 without depending on the hooking member 121.

  For the suspension member 13, a deformed steel bar in which a surface of a steel bar having a substantially circular cross section is provided with irregularities by ribs is used. One deformed steel bar is bent at a substantially central position to be formed into a substantially V-shape, and a valley portion of the substantially V-shape is a hooked portion 13a, and the hook 14a2 of the length adjustment portion 14 is detachable It is attached. Furthermore, the both ends are formed in hook shape, and it becomes the latching | locking part 13b detachably attached so that it may hook on the tread 52. As shown in FIG. Although a deformed bar is used here, a normal round steel or a bar of other cross-sectional shape may be used, or a chain, a wire or the like may be used. However, since the rib is provided on the surface of the deformed bar, it is preferable because the hook portion 13b and the tread 52 or the hooked portion 13a and the hook 14a2 do not slip easily. In addition, in the case of using a flexible one such as a chain or a wire, it is preferable to use a rigid one such as a steel bar since the possibility of bending during use may be considered. Moreover, although the hanging member 13 of this embodiment is attached to the same tread 52 by two hook parts 13b, using the hanging member 13 attached to the tread 52 by one hook part. It is also good. However, since it is conceivable that there is a possibility that the hook 52 is shifted in use if it is at one place, the hanging member 13 having two or more hooks 13 b as in this embodiment. It is preferable to use As shown in FIG. 1, the distance between the two hooks 13 b is equal to the length of the tread 52 because the two hooks 13 b of the hanging member 13 are hooked to the same tread 52. That is, it is shorter than the inner width between the columns 51. According to the Japanese Industrial Standard (JIS), JIS S1121 stipulates that the inner width of the pillar of the ladder is 300 mm or more, and the inner width of the pillar of the top step of the stepladder is 280 mm or more. It is preferable that the distance between the outer side of the latching | locking part 13b is 280 mm or less.

  The length adjustment unit 14 uses a turnbuckle. The turnbuckle is a turnbuckle body with a right-handed screw and a left-handed bolt attached, and when the turnbuckle body is rotated, both bolts are simultaneously squeezed or loosened depending on the direction of rotation. Adjustment of the length of the direction is possible. Although a turnbuckle is used here, other means capable of adjusting the length may be used. The length adjusting unit 14 has hooks 14a1 and 14a2 at both ends, and is detachably attachable to the hooked member 121 fixed to the end of the mounting member 12 and the hooked portion 13a of the hanging member 13 respectively. It can be attached. Here, the length adjustment unit 14 can be detachably attached to the suspension member 13 and the placement member 12 as separate members from the suspension member 13 using hooks at both ends of the length adjustment unit 14. However, the length adjusting unit 14 may be configured integrally with the hanging member 13 so as to be a part of the hanging member 13. Further, instead of the hooks 14a1 of the length adjusting portion 14 which is hooked to the hooked member 121 fixed to the end of the mounting member 12, for example, a ring-shaped end is used to be hooked It may be rotatably fixed to the stop member 121, and the attachment member 11 to the suspension member 13 may be integrally configured.

  Next, a flow of attaching the scaffold plate support 10 according to the present embodiment to the forceps 50 and bridging the scaffold plate 90 will be described. As shown in FIG. 1, first, two insulators 50 are set apart on a wall or the like at an appropriate angle so as to sandwich a target work place. Then, the mounting member 11 is mounted so as to be covered from above with the longitudinal opening 11 d via the longitudinal opening 11 d, and the mounting member 11 is mounted. The hanging member 13 is attached to the step rail 52 at least one step higher than the step rail 52 by being hooked by the hooking portion 13 b. The hook 14a1 at the end of the length adjustment portion 14 is the hooking member 121 of the other end of the mounting member 12 whose one end is fixed to the side surface 11b1 of the mounting member 11 and the hooking portion 13a of the suspension member 13. And 14a2 are connected by hooking each other. And if the length of the length adjustment part 14 is adjusted so that the mounting surface 12a of the mounting member 12 may become horizontal, the attachment to the forceps 50 of the scaffold board support 10 is completion. After that, the scaffold plate support 10 is similarly attached to the tread 52 of the same height of the other forceps 50, and the scaffold plate 90 is constructed between the two mounting members 12.

  Since the mounting member 11 and the mounting member 12 receive forces in the axial direction of the length adjustment unit 14 and in the vertical downward direction by the self weight and the scaffold plate 90 in the state where the scaffold plate 90 is erected, as shown in FIG. As shown in FIG. 2, the tread bar 52 to which the mounting member 11 is attached abuts the top surface portion 11 a and the side surface portion 11 b 1 inside the mounting member 11. The top surface portion 11a, the side surface portion 11b1 and the lip piece portion 11c1 are hook-shaped, and are shaped so as to be hooked on the tread 52, and are difficult to be detached. 1 and 2 show an example in which the suspending member 13 is attached to the step beam 52 on the second step of the step beam 52 to which the attaching member 11 is attached, the present invention is not limited thereto. Depending on the size of the length adjustment portion 14 and the distance between the treads 52 of the insulator 50, the mounting members 11 may be attached to any tread 52 at a suitable position at least one step above the tread 52.

  The scaffolding plate support 10 according to the present embodiment is shown in Patent Document 1 because the mounting member 12 is supported by the hanging member 13 via the length adjustment unit 14 so as to be suspended from above. Compared to the case where the mounting member 12 is supported by a rod-like support member from below, there is no concern about buckling, and the strength is also safe. In addition, when working on the erected scaffolding board 90, it is necessary to ride on the area between the two mounting members 12 on which the scaffolding board 90 is placed, and it is necessary to ride on the end of the area away from this area There is a risk that the scaffolding board 90 may jump up, fall and fall. When the mounting member 12 is supported by a rod-like support member from below as shown in Patent Document 1, the area is difficult to understand and there is a risk that the user accidentally slips out of this area if he is obsessed with the work However, in the case of the scaffold plate support 10 according to the present embodiment, since the hanging member 13 serves as a fence, it is possible to work safely without the concern. Further, the hooked member 121 fixed to the end portion of the mounting member 12 has a substantially U-shaped arc portion so as to project from the mounting surface 12 a perpendicularly to the longitudinal direction of the mounting member 12. Because it is fixed, when the scaffolding board 90 is placed, the scaffolding board 90 is held between the support column 51 and the hooking member 121, and they act like a fence and the short sides of the scaffolding board 90 It is safe to work because it prevents falling in the direction.

  In addition, when the scaffold board support 10 is attached to the step bar 52 at a high position of the ladder 50, usually, the ladder board 50 is lifted up and attached while holding the scaffold board support 10 close to the target step bar 52. However, if you move up the ladder 50 while holding a bulky thing, there is a high possibility of dropping or stepping off the leg. However, in the scaffold plate support 10 according to the present embodiment, the mounting member 12 and the hanging member 13 are detachably connected by the length adjusting unit 14 having the hooks 14a1 and 14a2 at both ends and are separable. Further, the top surface portion 11a of the mounting member 11, the side surface portion 11b2 opposite to the side on which the mounting member 12 is fixed, and the lip piece portion 11c2 are hooked, and the hooked portion Can be hooked on. Therefore, as shown in FIG. 3, the mounting member 12 is held from above on the ground or on the tread 52 on the lower side of the ladder 50 with the mounting member 12 held overhead, and the mounting member 11 and the mounting member 12 are intended. If the suspension member 13 attached to the tread 52 and the length adjustment unit 14 is attached to the target tread 52 as well, the ladder 50 is lifted with no hand and placed at the top of the ladder. Since the placing member 12 and the length adjusting unit 14 can be connected to install the scaffold plate support 10, the mounting operation can be performed safely. Further, in the present embodiment, since the mounting member 11, the mounting member 12, the suspending member 13, and the length adjusting portion 14 can be separated, the housing can be made compact.

  The example which attached the scaffold board support 10 which concerns on this embodiment to the stepladder 60 was shown in FIG. 4, FIG. Similarly to the ladder 50, the stepladder 60 is a ladder body having two columns 61 and a plurality of treads 62 installed between them, but the distance between the two columns 61 becomes narrower as it goes up. It has a substantially C shape, and two ladder units are joined from both sides to connect the upper part, and the lower part can be opened and closed with the connecting part as a fulcrum so that it can stand independently. Moreover, the example in case the cross-sectional shape of the tread 62 is a substantially parallelogram was shown.

  The mounting of the scaffold plate support 10 according to the present embodiment to the lifting device is performed by the mounting member 11 and the suspension member 13 with respect to the treads, and thus does not depend on the width between the columns. In addition, even if the width between the columns 61 is different between the upper and lower sides, attachment is possible. Further, the mounting member 11 is attached so as to cover the top surface portion 11a on the tread with the covering member 11 from above through the longitudinal opening 11d, and the hanging member 13 is also hook-shaped hooking portions at both ends. Since it is attached so as to be hooked to the tread by 13b, any cross sectional shape of the tread such as a substantially circular cross sectional shape of the tread 52 of the ladder 50 or a substantially parallelogram cross sectional shape of the tread 62 of the stepladder 60 may be used. It can be attached without. Furthermore, it is only necessary to mount the mounting member 11 and the hanging member 13 on the cross rail and adjust the length of the length adjusting portion 14 so that the mounting surface 12a of the mounting member 12 is horizontal, which is extremely simple. Can be attached to Moreover, although the example which bridges the scaffold board 90 between two raising / lowering instruments to which the scaffold board support 10 was attached was shown in this embodiment, when using the scaffold board 90 with a wide working range and a long, three The scaffold plate support 10 may be attached to each of the elevating devices or more, and the scaffold plate 90 may be erected.

  Since the above only shows one embodiment of the scaffold board support according to the present invention, it can be suitably modified without departing from the concept of the present invention.

  The scaffold board support according to the present invention can be easily attached to a lifting device having a plurality of treads between two pillars such as a ladder, a stepladder and a tripod, and a simple scaffold can be set up in a short time. Therefore, in high-level work where the work range is wide and can be completed in a short time, the work efficiency can be improved.

DESCRIPTION OF SYMBOLS 10 Scaffolding board support 11 Mounting member 12 Mounting member 13 Suspension member 14 Length adjustment part 50 Ladder (raising and lowering tool)
60 steps (lifting equipment)
51, 61 support 52, 62 treads 90 scaffolding board

Claims (3)

A scaffolding board mounted on a lifting device having two columns and a plurality of treads installed between the two columns, and supporting a scaffolding plate bridged between at least two of the lifting devices A support,
A mounting member which is detachably mounted from above so as to be sandwiched between two side surfaces bent on both sides of a flat plate on one of the plurality of step bars of the lifting and lowering device;
A mounting member having one end fixed to substantially the center of one side surface of the mounting member and the other end extending substantially perpendicularly from the one side, on which the scaffold plate is mounted;
One end side is rotatably attached to the other end side of the placing member via the length adjusting portion, and the other end side is hooked on the step rail at least one step above the step rail on which the mounting member is mounted A hanging member that is detachably attached in this way;
Scaffold board support characterized by having.   The length adjusting portion of the hanging member is a turnbuckle provided with a hook on one end side, and the hanging member is detachably attached to the other end side of the placing member by the hook. The scaffold board support according to claim 1. The scaffold plate support according to claim 1 or 2, wherein the attachment member is a lip channel steel having a substantially C-shaped cross section.

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