Coring device for compression-resistant core sample of highway pavement

Abstract

The invention discloses a coring device for a compression-resistant core sample of a highway pavement which comprises a core drilling machine body, the core drilling machine body comprises a transmission structure, a coring cylinder is installed at the bottom end of the transmission structure, a fixing ring is installed on the bottom side of the coring cylinder, a coil spring is installed on the inner side of the fixing ring, a handle is installed at one end of the coil spring, and an open groove is formed in the surface of the fixing ring. A clamping buckle block is installed on one side of the open groove, an inner baffle is installed at the bottom end of the fixing ring, a fixing block is installed at the other end of the spiral spring, pneumatic equipment is installed on the surface of the inner baffle, the inner baffle comprises an upper arc-shaped block and a lower arc-shaped plate, bolt holes are formed in the two ends of the upper arc-shaped block, and a pump air opening is formed in the inner side of the lower arc-shaped plate. According to the coring device, the core drilling machine body is arranged, the spiral spring structure capable of conveniently adjusting the fixing position is arranged at the bottom end of the coring cylinder, the coring cylinder can be completely fixed when not used through the spiral spring, shaking is limited in a small range when the coring cylinder is used, and the coring device is more beneficial to drilling operation.

Description

technical field [0001] The invention relates to the field of pavement detection, in particular to a coring device for anti-pressure core samples of highway pavement. Background technique [0002] Pavement strength is one of the important parameters to measure the overall quality of highway engineering. Therefore, inspectors should conduct inspections in strict accordance with the normative standards to avoid affecting the performance of concrete pavement, improve the strength of the pavement, and ensure the overall quality of the project. At present, when inspecting the concrete compaction strength in highway engineering, there will be some specific inspection methods, Inspection tools and inspection equipment are also divided into non-destructive inspection and destructive inspection. Both have advantages and disadvantages and focus directions. Generally, both are used simultaneously in detailed inspection. [0003] In the destructive testing process, the more commonly use...

AI Technical Summary

Problems solved by technology

Core samples are drilled with a core drilling machine on a representative concrete structure. After processing, both ends are sawed, ground or filled up, and then made into a cylinder for strength testing. Generally, a single person can use a core drilling machine to work. , has the effect of convenience and quickness. However, in the detection process, since it is mainly a drilling process, water is continuously added during the core drilling process to avoid overheating of the drill bit and reduce dust. The rapid rotation of the drill core will cause the machine itself to be an open machine due to The splashed waste water is bonded to the supporting steel pipes and rollers, especially when it splashes to the power engine, which will affect the service life of the overall equipment. In the manual holding state, the staff at the rear will also be splashed by the waste water. so that it is not easy to clean

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