Support-free suspension type slip form construction device and method

The invention discloses a support-free suspension type slip form construction device and method. A rail can be connected with a station middle plate; a support platform system is in an L shape; one side of the support platform system is connected with the rail through a traveling mechanism capable of driving the support platform system to move along the rail; a rolling support can be connected with a station side wall; the other side of the support platform system is arranged on the rolling support; a first steel formwork and a second steel formwork are arranged on the inner side of the support platform system; the first steel formwork is connected with one side of the support platform system through a first telescopic device; and the second steel formwork is connected with the other side of the support platform system through a second telescopic device. The problem that horizontal and vertical cross construction cannot be carried out on a shield, a platform plate, a paved rail and the like in an existing met