Concrete cut sampling machine

Abstract

The invention discloses a concrete cut sampling machine. A transmission motor is connected with a transmission gear set; the transmission gear set drives a test specimen clamping chuck and a transmission screw rod outside a transmission device box to rotate; two guide rails are arranged on the transmission screw rod; a big support plate arranged on the guide rails is movably connected with the guide rails by a transmission screw sleeve; a small support plate is installed on the big support plate; a cutting tool clamping platform is installed on the small support plate; a powder collecting device is arranged outside the cutting tool clamping platform; the small support plate is controlled by a stepping motor to move between two traveling switches at both ends of the big support plate; and the starting or the shutting of the stepping motor is controlled by a longitudinal feed control device. The invention can set parameters according to the actual condition, ensure the uniformity and the accuracy of sampling, can be fully automatically operated, and has time and labor saving, high efficiency, no dust pollution, clean and sanitary environment, economy and utility.

Description

technical field [0001] The invention relates to a concrete cutting and sampling machine. Background technique [0002] At present, most of the durability of concrete structures is caused by the corrosion of steel bars, and the main reason for the corrosion of steel bars is the corrosion of chloride ions infiltrated from the outside. Therefore, evaluating the migration characteristics of chloride ions in concrete is particularly important for the durability of concrete structures in marine and other chloride ion environments. It is necessary to take samples layer by layer at a certain depth interval to determine the chloride ion content in concrete. There are four existing concrete sampling methods: one is the core drilling method, such as "The durability, mechanism and service life prediction method of high-performance concrete in the salt lake area" [D] Nanjing, China, Southeast University, 2004, Yu Hongfa; it It is to use a drill press to select points on the cross-sectio...

AI Technical Summary

Problems solved by technology

There are four existing concrete sampling methods: one is the core drilling method, such as "The durability, mechanism and service life prediction method of high-performance concrete in the salt lake area" [D] Nanjing, China, Southeast University, 2004, Yu Hongfa; it It is to use a drill press to select points on the cross-section to drill cores at a certain depth to take powder, but this kind of drilling point selection has a lot of human factors, and the test results cannot truly represent the real chloride ion content value of a certain penetration depth because the position of the drilling point is related to the number; The second is to use a cutting machine to dry cut the powder layer by layer. Many laboratories use general stone cutting machines to slice concrete at different depths, and then crush and grind the slices. The manual consumption is huge and the efficiency is low.

Due to the need for such concrete chips, the knife-edge dust is very large, the working environment is harsh, and the knife-edge powder cannot be collected, and the sampling depth is manually measured, resulting in an inaccurate sampling size; the third is that the artificial file grinds the concrete powder layer by layer, such as "estimated A new method for the distribution of chloride ions in concrete", Journal of Zhejiang University (Engineering Edition), Volume 38, No. 2, Jin Weiliang, Zhang Yuanzhu; this manual measurement of the sampling depth consumes a lot of labor, the efficiency is extremely low, and the sampling size is not accurate enough; four It is a sampling grinder, for example, "Basic Research on Chloride Ion Migration Test Method in Cement-Based Materials [D] Changsha, China, Central South University, 2009, Yuan Qiang; the depth of this method is to grind the sample by relatively rotating the movement and the handle Controlled by cover layer, manual operation during sample grinding, large labor consumption, slow sample grinding, time-consuming powder collection, expensive tools, so the tool wear value is high under the same sampling amount

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