A water-saving automatic adjustment device for making cylindrical samples of rock or concrete
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG UNIV OF SCI & TECH
- Publication Date
- 2019-08-09
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Abstract
Description
technical field
[0001] The invention relates to the field of geotechnical engineering instruments, which belongs to a sample making tool, in particular to a water-saving automatic adjustment rock or concrete cylindrical sample making device. Background technique
[0002] Existing laboratory rock or concrete sampling machines can only take samples with fixed diameter and limited length. Sampling cannot be achieved if the length of the sample taken exceeds the maximum limit or the diameter of the sample is not the caliber of the existing tool.
[0003] Furthermore, in the existing laboratory rock or concrete sampling machines, during the sampling process, with the increase of the drilling depth, the drill pipe tends to swing a little from side to side, which will directly cause the side of the cylindrical sample taken out to be rough. , Sometimes there will be a large dislocation phenomenon, resulting in sampling failure, and the subsequent sample work cannot be carried out, ...