Rotating shoring head unit for table forms

Table form head with a tilting rotating plate and locking grooves that allows shoring to be folded without disassembly

This technology is a rotating shoring head unit that attaches a fixing member to the underside of a table form slab mold using two fixing pins. It allows the shoring to be tilted or set upright while remaining connected to the mold by tilting and rotating the rotating member around the first fixing pin. When the locking protrusion of the rotating member is inserted into one of the various locking grooves around the fixing member, the angle of the shoring is securely locked in place.

Existing table forms used in high-rise reinforced concrete construction have fixed shoring, which requires the length to be adjusted with height-adjustment screws every time they are moved. Furthermore, if there are obstacles indoors, the shoring must be completely disassembled before moving. Recently developed rotating shoring also requires inconvenient additional work, such as installing separate reinforcing bars to set the rotation or fixed positions.

This technology features pin insertion holes in the first and second rotating plates—which face each other with the fixing member in between—that are wider than the pins themselves. This allows the protrusion to disengage from the groove when the plate is tilted and re-engage when it is upright. The second rotating plate includes an arc-shaped window and an indicator with markings, allowing users to see from the outside which locking groove is engaged. A pin-locking part catches on the second fixing pin, stopping the rotation when the shoring is perpendicular to the floor. This can be applied to slab framing for high-rise apartments and offices, RC buildings with repetitive floor modules like hospitals and offices, and dedicated table form lifting systems. It allows the entire mold to be moved without changing the shoring length, reducing construction time and labor per floor.

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Key Features:

• First and second fixing pins coupled to the underside of the slab mold at a distance from each other, and a fixing member secured to the underside of the mold by these pins
• A rotating member with a mold coupling part and a shoring coupling part, featuring pin insertion holes wider than the first fixing pin to allow tilting around the vertical axis of the pin
• First and second rotating plates arranged to face each other with the fixing member in between, with a locking protrusion extending from the first rotating plate toward the second
• An indicator including an arc-shaped window passing through the second rotating plate and markings that indicate the position of the locking groove where the protrusion is inserted

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This invention was developed with support from the Ministry of Land, Infrastructure and Transport for the development of system formwork and lifting technology for low-cost, high-speed construction.

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