Pressing and installing fixture

The utility model provides a pressing and installing fixture comprising an upper bottom plate and a lower bottom plate for supporting a workpiece, wherein the upper bottom plate and the lower bottom plate are connected by a first guide post and a second guide post, and a floating joint which is connected on a hydraulic press and drives the upper bottom plate to move towards a direction close to the lower bottom plate along the first guide post and the second guide post is also supported on the upper bottom plate. The pressing and installing fixture also comprises a shim plate, a press head and a plurality of ejection devices, wherein the shim plate is arranged at one side of the upper bottom plate, which is close to the lower bottom plate, the press head can be used for simultaneously installing a plurality of bushes and pin bolts and pressing and installing the workpiece, and the ejection devices are arranged between the shim plate and the press head and are used for ejecting the bushes and the pin bolts in