Seat load limiting device and bicycle

The utility model discloses a seat load limiting device and a bicycle, belongs to the technical field of load limiting, and aims to achieve the purpose of load limiting. The device comprises a load limiting part, a lifting part and a control part, the lifting part comprises a slide way and a displacement device, the slide way is fixed to a bicycle, the displacement device is fixedly connected with the load limiting part, and the displacement device can move up and down in the slide way; when the displacement device moves to the top end of the slide way, the load limiting part extends out of the rear half part of a seat of the bicycle and is higher than the seat, and when the displacement device moves to the bottom end of the slide way, the load limiting part retracts to the position below the seat; the control part is connected with the displacement device and controls the displacement device to move upwards or downwards in the sliding way. 本申请公开了一种座位限载装置及单车，属于限载技术领域，用以达到限载的目的。所述装置包括：限载部、升降部和控制部，其中：所述升降部包括：滑道