Tool for rapidly installing and detaching engine valve assembly

The utility model provides a tool for rapidly installing and detaching an engine valve assembly. The tool comprises a movable sleeve, an operating rod, a positioning and fixing pipe, a handle, a spring pressing component and an oil seal installing rod, wherein the handle for hand holding is arranged at one end of the operating rod; an installing hole is formed in the other end of the operating rod in an aligned way; the installing hole is movably connected with the positioning and fixing pipe; the positioning and fixing pipe is matched with a positioning bolt on an engine; a plurality of limiting grooves are formed in the operating rod; the movable sleeve is connected on the operating rod in a sliding manner; a limiting and locking bolt is arranged on the movable sleeve; two hinge bases are arranged on the outer wall of the movable sleeve; the hinge bases are movably hinged to the spring pressing component or the oil seal installing rod. When the tool is used for installing and detaching the engine valve assembly, only a valve rocker is detached, and a cylinder cover of the engine is not detached, so that the tool is convenient and quick, can easily detach a spring locking clamp, a valve spring and a valve oil seal of the valve assembly and does not cause any damage to the valve assembly and the cylinder cover.