Supporting device for tunnel entering construction based on shallow-buried soft broken surrounding rock

The utility model provides a supporting device for tunnel entry construction based on shallow-buried soft broken surrounding rock, belongs to the technical field of tunnel construction supporting devices, and aims to solve the problem that a traditional supporting device is difficult to provide pre-support and installation time for an assembled supporting structure. The main body comprises a main frame, and the main frame is composed of a support, a vertical rod and a baffle. A connecting assembly is installed on the bottom face of the support, and universal wheels are installed on the bottom face of the support. A pre-supporting piece is installed on the rear side of the baffle. The periphery of the pre-supporting piece abuts against the inner wall of the circular tunnel. The pre-supporting piece is arranged, after the air cylinder is started, the pushing block is pushed by the pushing rod to move forwards, the pushing block pushes the tip cone to move forwards, the sliding block is pushed by the tip cone to