JP4480183B2 - Folding work scaffolding - Google Patents

Description

  The present invention relates to a foldable work scaffold used in interior work or a small-scale construction site.

  2. Description of the Related Art Conventionally, folding work scaffolds that are easy to install and remove and that are excellent in transportation, storage, and the like are widely used in interior construction and small-scale construction sites. These work scaffolds, for example, are arranged in parallel with two pedestal columns equipped with a caster for movement at the lower end, and form a frame-shaped leg by connecting these pedestals with horizontal members, A pair of legs are placed opposite to each other, and the pedestals of each leg are connected by stretchable pantograph-like braces, and the pantograph-like braces are expanded when used between the horizontal members of each leg. On the other hand, the scaffolding board is installed on the work platform, and at the time of removal, after removing the constructed scaffolding board, the pantograph-like bracing is folded to make it compact, for example, as shown in Patent Documents 1 to 3 It is known.

By the way, when folding a foldable work scaffold, there is a problem that transportation and storage of the scaffold plate removed from the scaffold main body composed of legs, braces, etc. is extremely inconvenient. A hanging bracket is provided on the back surface, and the hanging bracket is hooked on a horizontal member (horizontal crosspiece) of the leg. Further, in Patent Document 2, the folded scaffold body and the scaffold plate are integrally stored in the same manner as Patent Document 1 so as to be slidably engaged with one leg without removing the scaffold plate. By doing so, transportability and storage properties are improved.
Japanese Utility Model Publication No. 3-14516 Japanese Utility Model Publication No.4-1244 Japanese Utility Model Publication No. 6-36166

  However, in the above conventional folding work scaffold, when the scaffold plate is long, even if it is housed integrally with the folded scaffold body, it is not compact due to the length of the scaffold plate. There are also inconvenient places.

  This invention makes it a subject to provide the foldable work scaffold excellent in transportability and storage property by dividing | segmenting and comprising a scaffold board in view of said point.

In order to solve the above-described problems, in the folding work scaffold of the present invention, two leg columns each having a caster at the lower end are connected by a horizontal member to form a leg, and the leg is paired with a pair. A foldable working scaffold constructed by connecting the pedestals of each leg to each other by stretchable pantograph-like braces and laying a scaffolding plate between the legs, the scaffolding plate having a length The length of each scaffold plate is divided into two in the direction, and the length of each scaffold is approximately half the distance between each leg during expansion, while the length of each scaffold plate is shorter than the length of the pedestal and each scaffold plate The base end of each scaffold is pivotally attached to the upper end of each leg so that each scaffold plate opens symmetrically on both the left and right sides, and the free end of each scaffold plate is pivoted to the folded position. when the movement in the caster each scaffold plate is suspended in a state of outward the rear side along the outer side of the leg member And standing, and when the free end portions of each scaffolding board is rotated to a horizontal position so as to close, substantially intermediate portion of the expansion and contraction direction of the braces supporting member for supporting the free end of each scaffold plates It is characterized by having prepared for.

According to the foldable work scaffold according to the present invention, two leg posts each having a caster at the lower end are connected by a horizontal member to form a leg, and a pair of the leg is arranged to face each leg. It is a foldable work scaffold that is constructed by connecting legs of the body with stretchable pantograph-like braces, and a scaffolding plate is laid between the legs, the scaffolding plate being divided into two in the length direction The length of each scaffold plate is set to be approximately half the distance between the legs during bracing and expansion, while the length of each scaffold plate is shorter than the length of the pedestal and the base end of each scaffold plate is Each scaffold is pivotally attached to the upper end of each leg so that each scaffold plate opens symmetrically on both the left and right sides. When the free end of each scaffold plate is rotated to the folded position, each scaffold is plate is suspended in a state of outward the rear side along the outer side of the leg and movable in the caster, and the scaffold Since the support material for supporting the free end portion of each scaffold plate is provided in the substantially intermediate portion in the stretching direction of the brace when the free end portions of the scaffold plate are rotated to a horizontal position so that they are close to each other. The bulk space at the time of folding by dividing | segmenting and folding is suppressed, and while being excellent in transportability and storage property, it can employ | adopt suitably also with a long scaffold board.

  According to the foldable work scaffold according to the present invention, the scaffold plate constructed between the legs that can be expanded and contracted by a pantograph-like brace is divided into two in the length direction, and the length of each scaffold plate is expanded during the brace expansion. The length is approximately half the leg spacing. Then, the base end portion of each scaffold plate is pivotally attached to the upper end portion of each leg body, and the free end portion of each scaffold plate is rotated and positioned horizontally, so that the scaffold plate is free to play. A support material for supporting the end portion is provided at a substantially intermediate portion in the stretching direction of the braces.

  And when using the work scaffold, each leg of the folded work scaffold is pulled apart to expand the pantograph-like bracing, and then the scaffold plate pivotally attached to the upper end of each leg is rotated horizontally. Then, the free end portion is supported by a support member attached to the brace, and in this state, the free end portion is fixed with a fixing pin or the like. Further, when removing the work scaffold, the scaffold plates are respectively rotated outward and stored so as to be along the outside of the leg, and then the pantograph-like braces are folded to be compact and easy to handle.

  As described above, the folding work platform is constructed so that the scaffolding plate to be installed is housed in two parts, so that the bulk space when folded is suppressed, and for example, a long scaffolding plate that emphasizes workability is suitable. Can be adopted.

  Embodiments of the present invention will be described below with reference to the drawings.

  Reference numeral 1 denotes a foldable working scaffold according to the present invention, which is constructed between a pair of opposing legs 2a, 2b, a stretchable pantograph brace 3 connecting them, and each leg 2a, 2b. The main body is composed of the scaffold plates 4a and 4b.

  The leg bodies 2a and 2b are formed in a frame shape by standing two leg pillars 5 in parallel and connecting the leg pillars 5 with a plurality of horizontal members 6. The pedestal 5 is composed of an outer tube 7 and an inner tube 8 slidably fitted into the inner tube 8 from below. By fixing, the height of the legs 2a and 2b can be adjusted. In addition, a locking piece 9 having a round hole is provided on the lower side of the outer tube 7 and extends from the middle portion of the outer tube 7 to the upper side along the longitudinal direction of the outer tube 7. On the other hand, a guide piece 11 having a long hole 10 of an appropriate length is provided so as to project, and a moving caster 12 is provided at the lower end portion of the inner tube 8.

  The brace 3 is a pantograph-like shape that can be expanded and contracted by crossing a large number of bar members 13 and pivotally connecting and connecting them with connecting pins. A slide pin 14 having a diameter slightly smaller than the groove width of the long hole 10 of the guide piece 11 is fixed to the end of the material 13, while the round of the locking piece 9 is attached to the end of the bar 13 on the lower side. A pin hole having substantially the same diameter as the hole is formed.

  Then, the brace 3 is arranged between the leg pillars 5 of the pair of opposing legs 2a, 2b, and the connecting pin is inserted with the pin hole at the end of the brace 3 aligned with the round hole position of the locking piece 9. On the other hand, the sliding pin 14 at the end of the brace 3 is fitted into the long hole 10 of the guide piece 11 while being axially attached. With this configuration, the sliding pin 14 slides in the long hole 10 in accordance with the movement of the legs 2a and 2b, and the strut 3 can be expanded and contracted.

  The scaffold plates 4a and 4b have a length approximately half of the distance between the legs 2a and 2b when the bracing 3 is fully extended, and the base ends of the respective scaffold plates 4a and 4b are used. As shown by the arrows in FIG. 1, the shafts 15 are pivotally attached to the upper ends of the legs 2a and 2b. At the time of folding, as shown in FIGS. 5 and 6, each scaffold plate 4 a, 4 b is suspended with the back side facing outward along the outside of each leg 2 a, 2 b, In use, as shown in FIGS. 1 to 3, each scaffold plate 4 a, 4 b is closest to its free end, and is horizontal with the surface side facing upward above each leg 2 a, 2 b. It is comprised so that the front-end | tip part of each scaffold board 4a, 4b may be supported from the downward direction by the support material 16 so that it may be constructed.

  In addition, a plurality of through holes 17 are formed in the upper surface corners of the scaffold plates 4a and 4b, and handrails are erected on the upper ends of the legs 2a and 2b, which are lower than the through holes 17. When the scaffold is installed, the lower end portion of the handrail material is fitted into the support tube 18 through the through hole 17 as necessary, so that the handrail material (see FIG. (Not shown) can be erected.

  The support member 16 has a substantially gate shape including a pair of intermediate struts 19 provided at a substantially intermediate portion of the brace 3 in the expansion / contraction direction, and a horizontal member 20 installed on the upper end portion thereof. The intermediate strut 19 includes an outer tube 21 and an inner tube 22 that is slidably fitted into the inner tube from below. The lower end of the inner tube 22 is attached to the lower side connecting portion of the brace 3 by a connecting pin. On the other hand, the intermediate portion of the outer tube 21 is pivotally attached to the upper side connecting portion of the brace 3 with a connecting pin, and the intermediate strut 19 expands and contracts in the vertical direction in accordance with the expansion and contraction of the brace 3. The structure does not hinder expansion and contraction.

  When the brace 3 is extended, the intermediate strut 19 is shortened, and as shown in FIG. 1, the height positions of the upper ends of the legs 2a and 2b that pivotally attach the base ends of the scaffolding plates 4a and 4b, and the support material 16 The horizontal position of the horizontal plate 20 is set to be substantially the same, and when the scaffold plates 4a and 4b are rotated to the horizontal position, the free ends of the scaffold plates 4a and 4b are moved downward. More supportable.

  Further, the brace 3 and the pedestal 5 are connected to each other by a steady member 23. The steady member 23 includes an outer tube 24 and an inner tube 25 slidably fitted in the inner tube 25. It can be adjusted.

  Then, when using the work scaffold 1, first, as shown in FIGS. 5 and 6, when the legs 2a and 2b at both ends of the folded work scaffold 1 are separated, a pantograph-like shape follows. Bracing 3 is expanded. When the legs 2a and 2b are separated by a predetermined distance, the scaffold plates 4a and 4b pivotally attached to the upper ends of the legs 2a and 2b are rotated inward as shown by arrows in FIG. When it is moved and rotated approximately 270 ° and the free end portions come to the closest horizontal position, as shown in FIGS. 1 to 3, the free end portions of the scaffold plates 4a and 4b are bracing. 3 is supported from below by a support member 16 provided in the middle portion of the base plate 3 and fixed in that state with a fixing pin or the like. Further, according to the height of the work site, for example, as shown by the arrows in FIG. 4, the height of the legs 2a and 2b is adjusted as appropriate, and if necessary, the handrail material (see FIG. Attach and use.

  On the other hand, when the work scaffold 1 is removed, after the scaffold plates 4a, 4b and the support member 16 are released, the scaffold plates 4a, 4b are respectively rotated outward as indicated by arrows in FIG. As shown in FIGS. 5 and 6, the pantograph-like bracing 3 is made to be in the retracted state by being suspended along the outer sides of the legs 2a and 2b. Fold it down and make it compact before removing it.

  As described above, the folding work scaffold 1 is stored in such a manner that the scaffold plates 4a and 4b divided into two in the length direction are suspended and stored along the legs 2a and 2b, respectively. The bulk space can be reduced, and it can be made excellent in transportability and storage. Further, it is possible to suitably employ even a relatively long scaffolding plate that places importance on workability.

It is a front view which shows one Example of the folding type work scaffold which concerns on this invention. It is a top view of FIG. It is a side view of FIG. It is a figure equivalent to Drawing 1 showing the state where height adjustment was carried out. FIG. 2 is a view corresponding to FIG. 1 showing a folded state. FIG. 4 is a view corresponding to FIG. 3, showing a folded state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Folding-type work scaffold 2a, 2b ... Leg body 3 ... Bracing 4a, 4b ... Scaffolding board 5 ... Leg pillar 6 ... Horizontal member 12 ... Caster 16 ... Support material 19 ... Intermediate strut 20 ... Horizontal member

Claims (1)

Two legs with casters at the lower end are connected by a horizontal member to form a leg, and a pair of the legs are arranged opposite to each other so that the legs of each leg can be expanded and contracted in a pantograph shape. A foldable working scaffold that is connected by bracing and has a scaffolding plate laid between the legs, wherein the scaffolding plate is divided into two in the length direction and the length of each scaffolding plate is expanded by straddling each leg. While the length of each scaffold plate is made shorter than the length of the pedestal column , the base end portion of each scaffold plate is pivotally pivoted to the upper end portion of each leg body. It is constructed so that each scaffold plate opens symmetrically on both the left and right sides, and when the free end of each scaffold plate is rotated to the folded position, each scaffold plate is on the back side so that it follows the outside of the leg the hanging down in a state of outward and movable by said caster, and the horizontal position so that the free end portion close to each other of each scaffolding board When brought into motion, folding work scaffolding, characterized in that the supporting member for supporting the free end portion provided at a substantially intermediate portion of the expansion and contraction direction of the braces of each scaffolding board.

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