Ascending-free manual truck tarpaulin cover reel device

The invention relates to a vehicle cover device, in particular to an ascending-free manual truck tarpaulin cover reel device. An universal transmission device comprises a single cross shaft universalcoupling including a first cross shaft universal joint, or a double cross shaft universal coupling including the first cross shaft universal joint and a second cross shaft universal joint, or a movable fastening assembly including a first arc segment connector and a second arc segment connector; a flexible cover tarpaulin is arranged directly behind a headstock positioned at the front part of an unenclosed dropside truck and internally provided with a driving operating room, and the upper end of a front transverse chamber wall arranged at the front end of a carriage connected with the headstock; and the straight segment edge of the front end of the flexible cover tarpaulin is fixed on a tarpaulin retracting shaft; one end of the tarpaulin retracting shaft is movably connected to the top ends of first drive rods by