Foundation pit backfilling and compacting device

The utility model relates to a foundation pit backfilling and compacting device which comprises a connecting drill rod, a compacting plate, a fixing pin and a retention piece. A fixing block and a flat pin groove are sequentially arranged at the top of the connecting drill rod from top to bottom, a connecting sleeve is arranged on the top face of the compaction plate, and the inner diameter of the connecting sleeve is slightly larger than the diameter of the connecting drill rod. Two symmetrical fixing pin grooves are formed in the bottom of the connecting drill rod, the connecting sleeve is provided with fixing through holes matched with the fixing pin grooves, the fixing pins penetrate through the fixing through holes and the fixing pin grooves, fixing holes are formed in the two ends of each fixing pin, and the fixing pieces penetrate through the fixing holes to be connected with the fastening pieces to fix the positions of the fixing pins. 本实用新型涉及一种基坑回填压实装置，包括连接钎杆、压实板、固定销和固位件；所述连接钎杆顶部从上至下依次设有固定块和扁销槽，所述压实板