Coupler body casting system

The utility model provides a coupler body casting system relates to the machine -building field. Including casting mould mould, first subsidy piece, second subsidy piece, the gating system, first open riser and at least one first blind riser. This casting mould mould includes mould, lower mould, gib head, hook body and hook tail, goes up mould and lower mould lock and forms the coupler body cavity, and hook body one end is connected with the gib head, the other end and hook tail -to -tail linking. Wherein, last mould that first open riser and at least one first blind riser are located the hook body keep away from the lower mould the one side and with coupler body cavity intercommunication, the gating system be located casting mould mould one side and with the coupler body cavity intercommunication of the last mould department of hook body, first subsidy piece be located one side the same with the gating system and respectively with first open riser and the gating system intercommunication, second subsidy piec