The utility model discloses a subway train guest room gear frame for door, it is vice including a nut, a hinge festival and a hinge seat, the hinge is provided with one and ends the bit architecture on the festival, it is used for preventing to end the bit architecture the hinge festival excessively overturns to the hinge seat. The utility model discloses a set up the rotation angle who ends the bit architecture and effectively restrict the gear frame hinge on the hinge of gear frame, prevent its excessive upset, effectively prevent subway train switch door trouble, to end position structural design simple, low cost need not change the original design of gear frame, only needs at protection baffle plate of original structural increase, increase the one deck safeguard procedures can, convenient, safe, effective.