Volute spiral spring service life testing device

The utility model discloses a service life testing device for a volute spiral spring. Workbench, a linear guide rail is arranged on the upper side of the workbench. The upper side of the linear guiderail is slidably connected with a sliding seat; a placing box is arranged on the upper side of the sliding seat; a connecting end and a motor end are respectively arranged at two ends of the linear guide rail; a connecting frame is arranged on the upper side of the connecting end, connecting inserting plates are arranged on the lower surfaces of the two ends of the linear guide rail, connecting inserting grooves are formed in the upper surfaces of the two ends of the workbench, fixing inserting pins are slidably arranged in the connecting inserting grooves, and one ends of the fixing insertingpins are rotatably connected with second fixing screws through bearings; according to the utility model, the connecting plugboard, the connecting slot, the fixing bolt and the second fixing screw rodare arranged; when the lin