Piston fitting tool

The invention discloses a piston fitting tool which comprises a clamp cover, a coupled hinge body and a handle. The clamp cover is an elastic and opened cylinder structure which is fit for the periphery of a piston; a clamp type structure capable of being opened and closed is formed in the central of the coupled hinge body through a hinged bolt component, and one end of the coupled hinge body is connected with two ends of the opening of the clamp cover to drive the opening and closing of the clamp cover; the handle is fixed at the other end of the coupled hinge body. The piston fitting tool adopts the clamp type structure; after being opened, the piston fitting tool is put into a piston and clamps the piston ring, so as to facilitate the mounting of the piston into a cylinder sleeve. According to the invention, the problem that in the prior art, the piston is prevented from being mounted into the cylinder sleeve due to increased elasticity of the piston ring is solved. 本发明公开了种活塞装配工具。该活塞装配工具包括：夹套，其为与活塞外周适配的弹性开