Test pit forming device for detecting compaction degree of roadbed and base layer by sand filling method

• Main Authors: DAI YUHUAN, LEI ZIHAO, YIN ZHE, ZHOU JINTONG, YAN LIUCHENG, SI YILIANG, HE XINGPING
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2022
• Subjects: CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; MEASURING; PHYSICS; SOIL SHIFTING; TESTING; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model discloses a test pit forming device for detecting the compaction degree of a roadbed and a base layer by a sand filling method. The test pit forming device comprises a pit drilling machine, a support frame and a material collector, the supporting frame comprises three supporting columns, a supporting table, sleeves and an adjusting knob, the three supporting columns are arranged in a triangular shape, and the top of each supporting column is movably sleeved with the corresponding sleeve; each sleeve is correspondingly provided with an adjusting knob to fasten the sleeve and the supporting column. A supporting table is formed between the sleeves located on the same horizontal plane. The pit drilling machine is installed on the supporting table and comprises a transmission rod, the transmission rod movably penetrates through the supporting table and then extends downwards, the extending tail end of the transmission rod is rotationally connected with a transmission drill rod, and a spiral shove