Electric compactor

Abstract

The invention discloses an electric compactor, which comprises a base and a compaction hammer, the base is provided with a rotating seat and a lifting seat, the rotating seat is provided with a placing table used for placing a test mold cylinder, a chain transmission mechanism is arranged in the lifting seat, and the chain transmission mechanism comprises two chain wheels and an annularly arrangedchain; the chain is fixedly connected with a lifting module, the lifting module comprises a lifting block, a lifting rod and a light receiver, a second driving device is arranged in the lifting block, and the driving end of the second driving device is connected with the lifting rod; the lifting rod stretches and retracts relative to the lifting block under the driving action of the second driving device; and a lifting plate is fixedly connected to the rear side of the sliding seat through a connecting piece, and the lifting plate is matched with the lifting rod. The falling distance of the hammer body can be adjusted according to the internal height of the sample, and the hammering acting force and the compaction degree of the upper-layer sample and the lower-layer sample are ensured tobe consistent.

Description

technical field [0001] The invention relates to the field of geotechnical test equipment, in particular to an electric compaction instrument. Background technique [0002] The compaction instrument is a special instrument used for foundation filling projects such as hydraulic engineering dams, highways, railways, civil aviation airports, municipal engineering, and civil buildings. Under the action of standard compaction work, the relationship between soil moisture content and dry density is measured, so as to determine the optimal moisture content and corresponding maximum dry density of the soil sample. [0003] The indoor compaction test process is: put a sample with a certain water content into the compaction test mold in three or two layers, and hit each layer with a compaction hammer to achieve a certain number of hits. The compaction work is the product of the weight of the hammer body, the drop distance of the hammer body and the number of blows. After the soil layer...

AI Technical Summary

Problems solved by technology

[0004] The existing compaction instrument uses a hydraulic cylinder to drive the compaction hammer to lift and lower. In the compaction test, the falling distance of the hammer body is not easy to control. With the addition of samples, the distance between the upper surface of the sample and the action end surface of the hammer body The distance between the hammers is getting closer and closer, causing the hammer body to hammer the upper and lower samples unevenly, and the lower sample has a higher degree of compaction than the upper sample, which affects the accuracy of the test.

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