Stair construction plank road that can overturn

The utility model discloses stair construction plank road that can overturn relates to the construction technique, including rotatable girder, fixed girder, go up stand I, go up stand II, lower standI, lower stand II, the heavy frame of marking time, the stair tread, prevent toppling and prop the device, stand I was connected under the lower extreme reached with last stand I respectively on the rotatable girder, the bearing I the that from top to bottom lower extreme is connected on I inboard fixedly connected with respectively on the stand and the rotatable girder, the lower extreme reachesII fixed connection on the stand down with last stand II respectively on the fixed girder, mark time heavy frame fixed connection between rotatable girder and fixed girder, the stair tread location ison the heavy frame of marking time, prevent toppling and prop the device and include the main connecting shaft who is connected with fixed girder middle part and connect at main connecting shaft outer end main connecting shaft