Underground pipe gallery is trough of belt built -in fitting subassembly for support

The utility model belongs to the technical field of the engineering construction and specifically relates to an underground pipe gallery is trough of belt built -in fitting subassembly for support, this built -in fitting of its characterized in that is become by crab -bolt, foraminiferous embedded plate, bolt protection bank of cells, and foraminiferous embedded plate central authorities set up rectangular hole to along the bolt protection groove of the rectangular welding strip of hole bottom portion form, the bolt puts into T type the bolt head in protecting the groove, the screw rod welding of crab -bolt is in foraminiferous embedded plate bottom four corners, the mounting bracket adopts right angle hot rolling L shaped steel to process into, and this mounting bracket one side of its characterized in that is fixed with the T type bolt -up that the built -in fitting passes through in the bolt protection groove, is connected the position with the built -in fitting and opens the bar hole along the diagonal, t