Double-cutter asphalt concrete test piece cutting machine

Abstract

The invention discloses a double-cutter asphalt concrete test piece cutting machine. The double-cutter asphalt concrete test piece cutting machine comprises a supporting system, a cutting system and a control system. The height-adjustable cutting system is arranged on the supporting system and is used for cutting an asphalt concrete test piece. A sample conveying system capable of moving horizontally is further arranged on the supporting system, is positioned below the cutting system and is used for pushing an asphalt concrete sample to be cut to the cutting system. The control system is used for controlling the cutting work of the cutting system to start or stop and controlling the position of the sample conveying system to move or stop. The double-cutter asphalt concrete test piece cutting machine is simple in structure, novel and reasonable in design and convenient to operate, the whole cutting process is high in automation degree, the sample conveying process is uniform in speed, errors are reduced, and the quality of the asphalt concrete test piece is improved; the speed of adjusting the distance between cutter heads is high, and the working efficiency is improved; and various types of asphalt concrete samples can be clamped, the application range is wide, and the double-cutter asphalt concrete test piece cutting machine is suitable for general popularization.

Description

technical field [0001] The invention belongs to the technical field of cutting, and in particular relates to a double-knife asphalt concrete specimen cutting machine. Background technique [0002] In construction engineering, when testing the performance and indicators of asphalt concrete, it is necessary to complete the tests of beam bending, four-point bending fatigue life, bending creep and linear shrinkage coefficient of asphalt mixture. Before carrying out relevant tests, it is necessary to provide asphalt concrete specimens of fixed standard specifications, which require smooth surfaces, flat end faces, and dimensional deviations not greater than ±1mm. In order to ensure the accuracy and repeatability of the relevant tests, the cutting process of the specimen is particularly important. [0003] At present, the cutting machines for cutting asphalt concrete specimens mainly use single-knife cutting machines and double-knife cutting machines, and these two cutting machin...

AI Technical Summary

Problems solved by technology

[0004] 1. Single-knife cutting machine. Before cutting, it is necessary to manually measure the cutting size with tools such as a steel ruler, and then mark it on the test piece. Due to errors in the measurement and marking of the size, it cannot meet the precision requirements of the test piece size and the work efficiency is low. ;And when cutting, the single-knife cutting machine will have a large degree of vibration, which will cause the cutting surface to be uneven, and the parallelism of the cutting surface cannot be guaranteed.

[0005] 2. Most of the existing double-knife cutting machines are fixed-size cutter heads, and the size range of asphalt concrete samples that can be cut by this type of cutting machine is relatively small

The fixture design of the cutting machine is relatively simple, and it cannot clamp some test pieces with special size and shape requirements, and the adaptability is insufficient.

[0006] 3. Some double-knife cutting machines can adjust the distance between the two blades by replacing the limit snap rings with different thicknesses between the blades, but the replacement process is complicated and the safety factor is low

When the sample is injected into the cutting machine, the operator needs to manually push the sample to be cut into the lathe and press the cutting saw blade. The sampling speed is not uniform, resulting in uneven fractures on the surface of the cut test piece, which cannot meet the flat end surface of the asphalt concrete test piece. requirements

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