Drill rod of core drilling machine for road detection

Abstract

A drill rod of a core drilling machine for road detection, disclosed in the invention, comprises a drill rod body and a connecting shaft, a plurality of first grooves are formed in the inner wall of the drill rod body, movable blocks are installed in the first grooves, and baffles are fixedly connected to the side faces of the sides, away from the bottoms of the first grooves, of the movable blocks; second grooves with the same number as the first grooves are further formed in the inner wall of the drill rod body, the ends, away from the connecting shaft, of the second grooves communicate with the first grooves correspondingly, extrusion plates are arranged in the second grooves, and the inclined faces of the extrusion plates face the bottoms, away from the second grooves, of the second grooves; the side face of the side, close to the connecting shaft, of each movable block is provided with a slope section and a plane section and attached to the inclined faces of the extrusion plates, a plurality of driving mechanisms used for driving the extrusion plates to extrude the movable blocks are further arranged in the drill rod body, and a plurality of reset assemblies used for resetting the movable blocks are installed on the inner wall of the drill rod body; and the drill rod body is provided with a moving assembly used for driving the extrusion plate to slide in the first groove. The drill rod has the effect of improving the convenience of taking out the core sample.

Description

technical field [0001] The invention relates to the technical field of sampling equipment, in particular to a drill pipe of a coring machine for road testing. Background technique [0002] In road testing, a coring machine is usually used to take core samples from the road surface. The core test is an extremely important test item in the road surface test. The thickness of the road can be directly measured by drilling core samples, and can The density, compaction and other indicators measured in the laboratory play a significant role in controlling the construction quality of the pavement. [0003] The current notification number is CN212871806U Chinese utility model patent discloses a self-beating type road detection coring machine, including a bottom plate, the upper surface of the bottom plate is fixedly connected with a round rod, the top of the round rod is fixedly connected with a top plate, and the upper surface of the top plate is opened. The through hole of the fir...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that after the core sample is drilled by the drill pipe of the coring machine, it is necessary to manually use tools to take out the core sample in the road. Since the core sample is heavy and long, it is difficult for workers to remove the core sample when taking it out. The core sample is clamped, and the core sample is easily damaged by excessive force, which affects the test, and it is not convenient to take out the core sample

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