Sleeper mould hole-forming mode conversion device

The invention discloses a sleeper mould hole-forming mode conversion device, which is connected to a IIIa sleeper mould, and comprises a cylinder and a bottom support positioned at the bottom of the cylinder, wherein the center of the cylinder is provided with a vertical sleeve positioning bolt hole; the cylinder passes through a IIIa sleeper bottom template and is inserted in a rail slot plate hole of a IIIa sleeper rail slot plate; at least three bottom support bolt holes are uniformly distributed on the bottom support; and the bottom support is detachably connected with the IIIa sleeper bottom template through bolts inserted in the bottom support bolt holes. The device can realize university of the IIIa sleeper mould and a IIIc sleeper mould, namely a IIIc sleeper is produced through the IIIa sleeper mould, so that the production cost of the sleeper is reduced, and the mould utilization rate is improved; meanwhile, raw materials for manufacturing the IIIc sleeper mould are greatly saved, and the requiremen