A Marshall compaction instrument

Abstract

The invention discloses a Marshall compactor which comprises a machine body, wherein a distribution box for controlling the machine body to work is arranged at a lateral edge of the machine body; a workbench is arranged on the machine body; a mold compressing device is arranged on the workbench; a guide rod is arranged above the mold compressing device; a compacting hammer is moveably arranged on the guide rod; a count sensor is arranged on the compacting hammer; the count sensor counts for one time and generates a sensing signal once the compacting hammer strikes for one time; a compacting head is arranged at the bottom of the guide rod; an automatic lifting device for compacting hammer and a controller are arranged at the top of the guide rod; the controller responds to the sensing signal of the count sensor and is used for controlling the automatic lifting device for compacting hammer to act; a slide slot is formed in the machine body; a driving device which cooperatively works with the compacting hammer is arranged in the slide slot; and a touch display screen and a switch module used for controlling the automatic lifting device for the compacting hammer to work through keys are arranged on the distribution box. The Marshall compactor can automatically lift the compacting hammer and the guide rod, and no manual operation of an operator is required, so that the time and labor are saved.

Description

technical field [0001] The present invention relates to a Marshall test apparatus, more particularly, it relates to a Marshall compaction instrument. Background technique [0002] In road engineering, the Marshall compaction instrument is often used to prepare cylindrical specimens required for Marshall tests, indirect tensile tests, etc., for laboratories to test the physical and mechanical properties of asphalt mixtures. [0003] The Chinese patent with the publication number CN201047819Y in the prior art discloses a Marshall compaction instrument, which includes a frame on which a transmission part and a compaction part are arranged. Two sets of small standard test cylinders and compaction hammers corresponding to the large and small standard test cylinders. The compaction hammer is set on the drooping guide rod and can slide up and down along the drooping guide rod. The drooping guide rod passes through the upper and lower The two ends are detachably connected with the ...

AI Technical Summary

Problems solved by technology

However, after the above-mentioned Marshall compaction instrument completes compaction on one side of the test piece, it needs to manually lift the vibrating hammer and the guide rod when turning over the other side. Due to its heavy weight, when there are many Marshall test pieces required, the operation Personnel just need to constantly lift and put down manually, which is inefficient, time-consuming and labor-intensive, and brings great inconvenience to users.

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