Pump truck hydraulic pump preassembling supporting mechanism

The utility model discloses a pump truck hydraulic pump preassembling supporting mechanism, and relates to the technical field of hydraulic pump supporting. The clamping device comprises a bottom plate, a first stand column and a second stand column are fixedly connected to the upper surface of the bottom plate, a supporting plate is arranged between the first stand column and the second stand column, a clamping assembly is arranged on the upper surface of the supporting plate, and the clamping device further comprises a lifting assembly. Through the driving of the motor, the threaded rod can be driven to rotate, the sliding block can be driven to ascend and descend through the rotation of the threaded rod, the supporting plate can be driven to ascend and descend through the ascending and descending of the sliding block and the fixed connection of the sliding block and the supporting plate, and the toothed plate and the gear are matched with the limiting block and the connecting block for use, so that the sup