Slag digging tool and using method thereof

Abstract

The invention discloses a slag digging tool and a using method thereof, which are used for collecting and digging out the residual aggregates in a test hole when the sand filling method is used for detecting the compactness of a roadbed. The slag digging tool includes a handle, a long rod, a round base plate and a vertical protective tube; the top end and bottom end of the long rod are detachablyconnected to the handle and the center of the round base plate through threads; the outer diameter of the round base plate is equal to the inner diameter of the vertical protective tube, and the outerdiameter of the vertical protective tube is slightly smaller than the inner diameter of the test hole; the edge of the round base plate is a downward slope; the vertical protective tube is open up and down and is provided with a sleeve tube at the central axis; the sleeve tube is fixed on the inner wall of the vertical protective tube by connecting pieces on the outer wall; the inner diameter ofthe sleeve tube is slightly larger than the outer diameter of the long rod, and the bottom of the sleeve tube is higher than the bottom of the vertical protective tube; when the sleeve tube passes through the long rod and falls to the bottom of the hole with the vertical protective tube, the sleeve tube does not contact the round base plate; and when the long rod lifts the round base plate and theround base plate contacts and lifts the sleeve tube, the round base plate extends into the vertical protective tube and forms a curtain with the vertical protective tube. The invention can dig out and collect the residual aggregates that are not easy to dig out in the test hole, and improve the accuracy of detecting the compactness of the roadbed by the sand filling method.

Description

technical field [0001] The invention belongs to the field of highway engineering, and in particular relates to a slag removal tool and a using method thereof. Background technique [0002] The most important part of highway engineering is the subgrade. The quality of the subgrade structure layer is directly related to the smoothness of the road surface, transportation costs, maintenance costs and service life. One of the most important criteria for evaluating the quality of the subgrade is the degree of compaction. The sand filling method is the most widely used method for testing the compactness of highway subgrades in recent years. However, in actual operation, the residual and loose aggregate at the bottom of the test hole is often difficult to clear out of the hole, and the sand poured in will fill the voids of the residual aggregate. , so that the compaction test results are too small, which is not conducive to the accuracy of quality testing and reduces the testing eff...

AI Technical Summary

Problems solved by technology

The sand filling method is the most widely used method for testing the compactness of highway subgrades in recent years. However, in actual operation, it is often difficult to remove the residual and loose aggregate at the bottom of the test hole, and the sand poured in will fill the voids of the residual aggregate. , making the compaction test results smaller, which is not conducive to the accuracy of quality testing and reduces the testing efficiency

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