Quick hitch

摘要

A hitch is provided for coupling an implement to a dipper arm of a machine. The hitch is comprised of a male component comprising a wedge portion having a pair of opposing edges with an elongate divergent face formed on each edge, a female component with opposing channel portions for receiving the edges of the male component. Each channel portion has a corresponding divergent face joining opposing inner surfaces of the channel portion whereby when coupled to the male component in a seated position, each correspondingly divergent face engages a respective divergent face of the male component with a wedge action whereby to prevent relative movement between the male and female components. A retaining means is provided to retain the male component in the seated position within the female component and to urge the male component toward the seated position. The hitch is also comprised of two connecting portions fixed to either the male component or the female component and configured for engaging opposing sides of the dipper arm. Both connecting portions have pin-receiving apertures for connecting to the dipper arm by means of a pair of transversely extending connecting pins, the longitudinal axes of the connecting pins lying in a central plane, wherein each divergent face on the component to which the connecting portions are fixed has an elongate dimension lying in a plane substantially parallel to the central plane and opposing sides of each edge are located for sliding between the opposing inner surfaces of each respective channel portion.