Electric hammering device of compaction apparatus

Abstract

The invention discloses an electric hammering device of a compaction apparatus. A four-leg hammer device, a power device, a rotating device and an impaction barrel body are arranged; the rotating device is used for rotatably fixing the power device on the impaction barrel body through a rotating bracket; the power device is internally provided with a driving motor and a sliding way for sliding a vertical sliding rod of the four-leg hammer device; a rack which is in engaged transmission with a driving gear is arranged at one side of the vertical sliding rod; the driving gear of the driving motor is engaged with the rack of the four-leg hammer device, so that the lifting and free falling body movement of the four-leg hammer device are driven to realize the aim of impacting; the height of lifting an impaction hammer each time and the weight of the impaction hammer are determined; when the four-leg hammer device falls off, the four-leg hammer device is not in contact with a power box, so that the free falling body movement of the four-leg hammer device can be ensured and geotechnical test specifications are met; meanwhile, circumferential rotary impaction is carried out by the four-leghammer device under the action of the rotating device in an impaction process, so that the impaction frequency of each point is equal and the levelness of an impaction surface is ensured.

Description

technical field [0001] The invention relates to a geotechnical testing instrument, in particular to an electric hammering device for a compaction instrument. Background technique [0002] The compaction test of soil samples is widely used in building foundation filling, sea reclamation projects, earth dams, highways, airport runways and other projects. According to the compaction method stipulated in the specification, the relationship between the moisture content and dry density of the soil is measured, so as to determine the optimal moisture content and the corresponding maximum dry density of the fill. The compaction instrument method is to use a hammer to increase the density of the soil. The purpose is to use the compaction instrument indoors to measure the moisture content (optimum moisture content) and The dry density (maximum dry density) at this time is used to understand the compaction characteristics of the soil and serve as the basis for on-site soil foundation ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some large-scale compaction instruments on the market, but their hammering systems are too bulky. It is very inconvenient and laborious to adjust the height and strength of the hammer. It cannot guarantee the free fall of the compaction hammer and the compaction of the hammer. The energy and impulse cannot be calculated, which does not meet the requirements of the specification; due to the large area of ​​the large compaction barrel, it cannot be guaranteed whether the compaction frequency at each point is equal, and it is also difficult to ensure the level of the compacted surface

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