Folding locking device

The invention discloses a folding locking device, and particularly relates to the field of agricultural machinery, which comprises a folding support arm, a vertical beam welding piece, a main frame, a gear box, a main beam, a guide plate and a hydraulic assembly, one end of the main frame is connected with the vertical beam welding piece, and the other end is connected with the gearbox; a main beam is assembled and connected above the gear box; one end of the main beam is connected with the welded end of the vertical beam through a hydraulic assembly; the hydraulic assembly and the folding supporting arm are connected and assembled through a guide plate. The folding supporting arm is fixedly connected to the main beam; the folding supporting arm is clamped in a sliding groove of the main rack; therefore, the folding and locking functions are achieved, and the folding and locking device can be widely applied to mechanical facilities. 本发明公开了一种折叠锁紧装置，具体涉及农业机械领域，其包括折叠支撑臂、竖梁焊合件、主机架、齿轮箱、主梁、导向板、液压组件；所述主机架一端连接竖梁焊合件，另