JP3830934B2 - Temporary scaffolding for concrete placement - Google Patents

Description

  The present invention relates to a temporary scaffold for use in placing concrete beams such as underground beams and concrete walls such as indoor partition walls.

  When constructing concrete beams or concrete walls, for example, when constructing underground beams using concrete, place reinforcements in the underground beam construction site, and place the top and bottom sun trees on the surface side plate and between them. This is done according to the procedure of placing concrete with a combination of sun wood and placing concrete. When placing concrete into this formwork, in addition to the addition of concrete material, from the upper side of the formwork. Work is done a lot. Therefore, a scaffold for workers to perform these operations from the upper side of the formwork is indispensable, and this scaffolding work is usually done by placing a stepladder on the ground, which is the construction surface, and passing the scaffolding plate, or pipes A simple scaffold such as an assembly scaffold is temporarily installed and used as a work scaffold.

On the other hand, it is possible to easily install a scaffold for concrete placement without temporarily installing a framework scaffold such as a pipe assembly. A plurality of scaffold brackets provided with a horizontal member on which a scaffolding plate is placed, and attached to the formwork for the concrete wall body by hooking the key portion on the thick side end. Brackets are provided separately along the longitudinal direction of the thick side edges, and scaffolding plates are placed on the horizontal members of the plurality of scaffolding brackets, and the concrete wall body form is provided with concrete. A bracket scaffold for concrete wall casting, characterized in that it is a scaffold used when placing a wall. "
JP-A-11-229614 (Claim 1, paragraph number 0006)

  The problem to be solved is that when the concrete is placed on the formwork, conventionally, when the construction surface is the ground, the scaffolding is unstable because the stepladder is passed on the uneven and unstable ground with the stepladder. The workable range is narrow and limited, or it is necessary to cure the installation place for stabilization of the stepladder. In the former case, the work posture is not stable, so there is no danger, and both scaffolds are moved when moving the work place. It takes time. In addition, temporary scaffolds such as pipe assembly scaffolds to be installed on the construction surface have a problem of high costs and material costs.

  On the other hand, in the case of what was proposed as a bracket scaffold for placing concrete walls, using a scaffold bracket provided with a key part that is hooked on the lateral end of the formwork and with a horizontal member on which the scaffold plate is placed In addition, since the scaffold bracket is integrally provided with the key part and the horizontal member, the scaffold bracket is heavy, requires a lot of labor for transportation and installation, and requires a considerable space for storage. In addition, since the bracket is attached to the mold frame by hooking the key portion on the horizontal lateral end, there is a problem that the bracket is tilted and the bracket is tilted in the vertical direction.

In the present invention, while being able to work stably without relying on the scaffolding from the construction surface such as the ground, as a temporary scaffolding that can be disassembled even if it is heavy, reduces labor such as transportation and installation, and reduces costs, As shown in claim 1, at least a pair of vertical rods 1 each having a predetermined length extending in the vertical direction at an arbitrary interval, the upper end sun tree engaging piece 2 ₁ engaged from above with the upper surface of the upper end sun tree of the formwork. When the vertical San a Kigakaritomehen 2 _2, this such locking pieces 2 _1, 2 and attached to the vertical rod side behind the _second coupling member 1 ₁ to be engaged from the side San wooden formwork at its lower the mold upper engagement member 2 integrally provided with a connector 2 ₃ for connecting, with freely provided detachably by fitted from above through the connector 1 ₁ which is attached to each rod upper side surface and the coupling the rod side of the lower jig 1 _1, via the connector 1 ₂ which is attached to the rod side , Integrally with connector 3 ₃ for connecting the connector 1 ₂ below the rod side vertically San Kigakaritomehen 3 ₂ and engaging piece behind side which engages from the side in the longitudinal Sun wooden formwork The lower frame engaging member 3 provided in the above is provided so as to be detachable by insertion, and the upper and lower vertical sun wood locking pieces 2 ₂ and 3 ₂ are provided so as to be fixed to the vertical sun wood with bolts, respectively. The scaffold receiving member 4 extending in the opposite direction to the engaging members 2 and 3 is detachably attached to the side of the vertical rod 1 so as to support the scaffold plate 5 at the top, and the vertical rod is attached to the upper end sun tree of the formwork. It is characterized by hanging and installing a scaffold.

In this case, the upper end San Kigakaritomehen 2 ₁ and the longitudinal San Kigakaritomehen 2 _2, 2 _3, respectively U-shaped cross-section as shown in claim 2, the upper end San Kigakaritomehen 2 ₁ is lower, vertical Sun It is effective that the wood locking pieces 2 ₂ and 2 ₃ are respectively opened on the sides so that the upper end sun tree or the vertical sun tree can be inserted.

Said longitudinal rod 1 connector that attached to upper and lower sides 1 _1, 1 _2, with cylindrical or rod as shown in claim 3, upper, connector 2 ₃ at the bottom of the mold engaging members 2, 3 ₃ is preferably a rod-like shape or a tubular shape that fits with the coupling tools 1 ₁ , 1 ₂ .

Further, the scaffold receiving the hitting to attaching a member 4 in the vertical rod 1, as shown in claim 4, the vertical rod and below the predetermined position scaffold receiving member fixed to the support cylinder 1 _3, the installation of the scaffolding receiving member 4 It is desirable to adopt a configuration in which the height can be changed.

According to the temporary scaffold for placing concrete according to the first aspect of the present invention, at least a pair of vertical rods 1 are engaged with the upper end sun tree of the formwork from above and from the side to the vertical sun tree of the formwork. The formwork upper engagement member to be engaged is detachably provided via a connector attached to the upper side surface of the vertical rod, and the lower part of the formwork engages with the vertical sun tree of the formwork from below. The member is provided detachably via a connector below the side surface of the vertical rod, and the vertical sun tree engaging piece that engages with the vertical sun tree of the mold is provided so as to be fixed to the vertical sun tree with a bolt, while the upper and lower molds are provided. A scaffold receiving member is detachably attached to the side of the vertical rod in the opposite direction to the frame engaging member, and the vertical rod is suspended from the upper end sun tree of the formwork so that the scaffold is installed. Regardless of the unevenness of the ground of the construction part that builds the wall, No need to cure the location, blurring without stable scaffold without risk of feared scaffold receiving member can cost cheaper easily installed. However, by loosening the fixing bolt and sliding or moving the vertical rod on the upper end of the formwork, the mounting location and the size of the scaffold can be easily changed.
Furthermore, except for the scaffolding plate, it can be disassembled into a vertical rod, a formwork upper engaging member, a formwork lower engaging member, and a scaffold receiving member to reduce the weight of each member. Can be reduced, and the storage space can be reduced.

  According to the invention described in claim 2, since the upper end sun tree engaging piece and the vertical sun tree engaging piece are each U-shaped in cross section and the mounting direction of the upper end sun tree or vertical sun tree is open, By engaging the upper end sun wood and the vertical sun wood, it is possible to easily and stably engage for locking.

  According to the third aspect of the present invention, it is possible to easily connect the upper and lower formwork to the side surface of the vertical rod by using the connection tool provided vertically on the side surface of the vertical rod and the connection tool of the upper and lower formwork engaging members. Joint members can be connected.

  According to the fourth aspect of the present invention, the height of the installation of the scaffold receiving member is changed by using the pipe-shaped scaffold receiving member support tube fixed to a predetermined position above and below the vertical rod, so that the vertical rod can be attached to the vertical rod. By doing so, it is possible to set a convenient scaffold for concrete placing work according to the application.

  In order to construct concrete beams such as underground beams and concrete wall bodies such as indoor bulkheads, when placing concrete by placing reinforcements on the construction site and installing concrete, construction surfaces such as uneven and unstable ground This eliminates the instability of the conventional scaffolding and the need for curing, such as installing the scaffolding by setting the stepladder and passing the scaffolding plate, or curing the ground at the installation site, and the trouble of moving the work place At least a pair of vertical rods for the purpose of reducing the labor of transporting heavy scaffolding materials when installing the scaffolding and reducing the labor of installing the scaffolding, and stably and easily placing a scaffold for placing concrete at low cost Is suspended from the upper end sun tree of the formwork to install the scaffold, and the upper end sun tree engaging piece that engages the upper surface of the upper end sun tree from above and the vertical sun tree of the formwork are engaged from the side. Vertical sun wood locking piece and scaffolding A member, be provided detachably in the longitudinal rod by fitted via a connector provided on the rod side vertically and realized the installation of concrete 設用 temporary scaffold to easily mold stable.

FIG. 1 shows a front view when the temporary scaffold for placing concrete according to the present invention is installed in a concrete formwork, and FIG. 2 is a side sectional view of the formwork provided with the temporary scaffold for placing concrete. The figure (A) which is, and the figure (B), (C), (D) which are the partial explanatory drawings are shown. Moreover, FIG. 3 is a figure which shows the attachment or detachment state of the formwork upper part engagement member, the formwork lower part engagement member, and a scaffold receiving member with respect to a vertical rod. 1 vertical rod, 2 mold upper engaging member 2 ₁ upper San Kigakaritomehen, 3 formwork lower engaging member, 2 _2, 2 ₃ vertical San Kigakaritomehen, 4 receives scaffold Members 5 are scaffold plates, 10 is a formwork, 12 is an upper end sun tree, and 13 is a vertical sun tree.

  Arbitrary appropriate number (implementation) for one formwork 10 of the formwork arranged on both sides of the reinforcing bar such as the underground beam arranged near the bottom of the construction part (excavated and cured ground, etc.) In the example, a pair of vertical rods 1 and 1 are suspended from the upper end sun wood 12 of the mold so as to extend along the vertical sun woods 13 and 13 on both sides, and a scaffold receiving member 4 is attached to each rod. (See FIG. 1).

  In the mold 10, molds 10, 10 arranged on both sides of a reinforcing bar (not shown) are arranged with their side plates 11 facing each other, and on the outer sides of the vertical sun trees 13 of each mold 10. Each of the two lateral end thicknesses 14 and 14 is attached to the upper and lower predetermined positions, and the side plates 11 and 11 are located at the corresponding vertical positions between the two lateral end thicknesses 14 and 14. The molds are clamped from both outer sides of the opposed molds 10 and 10 by the mold clamps 15 using the wedges 27 from the outside of the thick side edges 14 and 14 with the separators 26 interposed therebetween. The interval between 10 and 10 is accurately maintained (see FIG. 2A).

Each vertical rod 1 is made of pipe (42.7φ), and an upper end sun tree for engaging and suspending the upper end side of the mold upper end tree 12 from above as an engaging member of the upper part of the form frame on the upper end side surface. engaging piece 2 ₁ and the vertical San Kigakaritomehen 2 ₂ which engages from the side in the longitudinal Sun tree 13 of the mold at its lower, this like 2 _1, 2 ₂ of the connection which is attached to the vertical rod side behind a connector 2 ₃ for connecting the tool 1 _1, the upper end San Kigakaritomehen 2 ₁ toward the bottom opening of the U-shaped by Channel steel U-shaped cross section, longitudinal San Kigakaritomehen 2 ₂ section as but toward the opening of the U-shaped laterally by a groove-type steel of small U-shaped, each comprising integrally by welding, and the vertical San Kigakaritomehen 2 ₂ for locking the vertical Miki 13 fitted a mold upper engaging member 2 which is provided to be tightened said longitudinal San tree 13 with bolts is provided detachably from above in the vertical rod 1 through the connector 1 ₁ which is attached to each rod upper side ( 2 (C) and FIG. 3).

Further, the rod side of the lower the connector 1 ₁ of the vertical rod 1, as the engaging member of the form bottom, vertical San Kigakaritomehen 3 which engages from the side in the longitudinal Miki 13 formwork ₂ a vertical and a connector 3 ₃ for connecting the connector 1 ₂ below the rod side to the locking piece rear side San Kigakaritomehen 3 ₂ the cross section is U-shaped by grooved steel small U-shaped opening the towards the side, integrally includes by welding respectively, and vertical San Kigakaritomehen 3 ₂ by bolts to lock the vertical Miki 13 fitted provided said longitudinal Miki possible tightening and the mold lower engaging members 3 are such provided on the vertical rod 1 detachably via a connector 1 ₂ which is attached to each rod lower side (see FIG. 2 (D) and FIG. 3).

Connector 1 ₁ is the upper part of the vertical rod 1 is connected with the connector 2 ₃ formwork upper engagement member 2 is provided with a tubular, the lower portion of the vertical rod 1 formwork coupling of the lower engaging members 3 3 ₃ and with a tubular connecting member 1 ₂ which engage are provided in the upper part back of the connector 1 ₁ of the vertical rods 1, scaffold receiving member 4 so as to put support the scaffolding plate 5 to the upper is interpolated scaffold receiving member support cylinder 1 ₃ small rod 4 ₁ of the inner end portion is fitted, are welded at a predetermined distance vertically and is adapted to change the height of the installation of the scaffolding receiving member (See FIG. 3).

Scaffolding receiving member 4, the mold 10 upper San tree 12 on the front surface of the scaffold receiving member support cylinder 1 of the pair of vertical rods 1, 1 which is suspended from the left and right at intervals _3, 1, respectively ₃ inner end wherein with interpolated fitting the small rod 4 _1, when located in the small rod 4 ₁ below the inner end of the scaffold-receiving member 4 was installed scaffolding receiving member 4 in the vertical rod 1, scaffold receiving member 4 at the top of as the width direction of the scaffolding board 5 supporting is horizontal, and is provided so as member lower support piece 4 ₂ receives scaffolds horizontal cross section is opened in a V-shaped small abuts against the vertical rod 1 (Fig. 2 ( B)).

Further, the scaffold receiving member 4 on the outer end portion of the scaffold plate loading portion on the opposite side of the small rod 4 _1, the pipe 4 ₃ for handrails to allow inserting the end rod of the handrail (not shown) from above Is provided.
As a result, when the scaffolding plate 5 is loaded and supported on the left and right scaffolding receiving members 4, 4 attached to the pair of vertical rods 1, 1 suspended from the upper end sun tree 12 of the formwork 10, the scaffolding plate 5 becomes horizontal. In addition, the left and right side plates 12 and 12 can be moved horizontally along the mold (see FIG. 1).

  In the construction work of concrete beams such as underground beams and concrete walls such as partition walls in the room, it is indispensable when placing a formwork and putting concrete material and performing concrete placing work from the other side of the formwork Can be installed more stably than before, regardless of the state of the construction surface such as the ground, and the work place can be moved easily by disassembling the materials and easily reducing labor during transportation and scaffold installation Can do.

It is a front view of the formwork which installed the "scaffold for concrete placement" of this invention. It is side sectional drawing (A) of a formwork which installed the temporary scaffold for concrete placement, and partial explanatory drawing (B), (C), (D). It is a figure which shows the attachment or detachment state of the formwork upper part engagement member with respect to a vertical rod, a formwork lower part engagement member, and a scaffold receiving member.

Explanation of symbols

1 …… Vertical rod
1 ₁ ...... Connector
1 ₂ ...... Connector
1 ₃ ... Scaffold receiving member support tube 2 ... Formwork upper engagement member
2 ₁ …… Top wood locking piece
2 ₂ …… Vertical sun wood locking piece
2 ₃ …… Connector 3 …… Formwork lower part engagement member
3 ₂ …… Vertical sun wood locking piece
3 ₃ …… Connector 4 …… Scafness receiving member 5 …… Scaffolding plate 10… Formwork 12… Upper end wood 13… Vertical sun wood

Claims (4)

A temporary scaffold for use in placing a concrete beam or a concrete wall, the upper end sun of the formwork with respect to at least a pair of vertical rods 1 each having a predetermined length and extending vertically the upper San Kigakaritomehen 2 ₁ which engages from above the tree top, a vertical San Kigakaritomehen 2 ₂ which engages from the side in the longitudinal Sun wooden formwork at its lower, this such locking pieces 2 ₁ and 2 ₂ are connected to the vertical rod side face 1 ₁ and the connecting tool 2 ₃ to be connected to the upper part of the formwork upper engagement member 2 is attached to the upper side of each rod 1 together freely provided detachably by fitted from above through a _1, the rod side of the lower the connector 1 _1, via the connector 1 ₂ which is attached to the rod side, the side in the longitudinal Sun wooden formwork a vertical San Kigakaritomehen 3 ₂ and connector 3 ₃ for connecting the connector 1 ₂ below the rod side to the locking piece back side that engages from person On the other hand, a lower part of the formwork engaging member 3 provided integrally is provided so as to be detachable by insertion, and the upper and lower vertical wood locking pieces 2 ₂ , 3 ₂ are respectively provided so as to be fixed to the vertical wood by bolts. The scaffold receiving member 4 extending in the direction opposite to the mold engaging members 2 and 3 is detachably attached to the side surface of the vertical rod 1 so as to support the scaffold plate 5 at the upper portion, A temporary scaffold for placing concrete, in which a vertical rod is suspended and a scaffold is installed. Upper San Kigakaritomehen 2 ₁ and the longitudinal San Kigakaritomehen 2 _2, 3 _2, respectively U-shaped cross-section, the upper end San Kigakaritomehen 2 ₁ is lower, vertically San Kigakaritomehen 2 _2, 3 _{2. A} temporary scaffold for placing concrete according to claim 1, wherein each side has an opening at the side, and an upper end wood or a vertical sun wood can be inserted. Vertical rod 1 connector that attached to upper and lower sides 1 _1, 1 _2, upper in tubular or rod, connector 2 _3, 3 ₃ the connector 1 ₁ of the lower mold engaging members 2 and 3, 1 ₂ and mating rod-like or tubular in a claim 1 or 2 concrete設用temporary scaffold according. Attached to the vertical rod 1 of the scaffold receiving member 4, the vertical rod and below the predetermined position scaffold receiving member support cylinder 1 which is fixed to _3, the scaffold receives claim 1 allowed change the height of installation of the member 4 or 2 Or the temporary scaffold for concrete placement of 3 description.

Images