Reentrant corner formwork support

The utility model relates to a reentrant corner formwork support, including whippletree no. 1, with the whippletree no. 2 of a whippletree perpendicular setting, whippletree no. 1 is two pole structures with whippletree no. 2, two nipple joint fixed connection for the pole, and still including the connection thick stick, be equipped with abrupt on connecting the thick stick, suddenly the piece height is the same with the whippletree height, it also can be a right angle thick stick to connect the thick stick and be rectangular straight thick stick, concrete perpendicularly in the one end of whippletree no. 1 or whippletree no. 2, all is equipped with abrupt piece on two right -angle sides. The abrupt piece of connecting the same edge of thick stick has two, also can be equally spaced four, and is corresponding a certain the serving of whippletree no. 1 and whippletree no. 2 is equipped with one or four nipple joints, the reentrant corner template does not have scattered various components, simple structure, use reentrant corner position leg joint very rapid, can accelerate the work efficiency that building templates built greatly.