1. According to relevant public information, the utility model belongs to the technical field of automobile assembly, in particular to an automobile water pump pulley installation device.
2. Automobile water pump is the main component of automobile cooling system circulation. The engine drives the pump bearing and impeller to rotate through the belt and pulley to realize the reciprocating circulation of coolant. For the installation of pulley, the pulley is usually knocked into the water pump shaft by hand hammer at present, but this installation method requires the material, knocking position and strength of the hand hammer, and improper operation is likely to cause damage to the pulley or water pump shaft. And the position of pulleys installed in this way may also be deviated. If the pump shaft and pulley are not completely vertical, the pump shaft may be damaged when the pump is running. Therefore, there is a need for a method that can accurately install the pulley.
3. The pulley mounting limit fixture proposed in the patent document cn207522499u includes a guide shaft for guiding and positioning the pulley to the front end of the water pump shaft, a bushing that can be sleeved on the guide shaft and a hydraulic pump that provides power for pressing the pulley. The guide shaft is provided with an annular boss, and the inner hole of the bushing is a stepped through hole, and the step surface of the bushing can abut against the end surface of the annular boss to realize limit. Although this patent document can realize the positioning of the water pump shaft, its positioning depends on the positioning hole at the free end of the water pump shaft, and it is not suitable for some water pump shafts without positioning holes.