Luoyang shovel

Abstract

The invention relates to an improvement of an engineering geological prospecting tool, in particular to a Luoyang shovel. The Luoyang shovel comprises a shovel knife and a weighting rod, wherein the shovel knife is cylindrical, the lower part thereof is a soil taking cylinder, and the upper part thereof is an impact cylinder; the diameter of the impact cylinder is greater than the diameter of the soil taking cylinder; an impact cylinder step is formed in the connected place of the impact cylinder and the soil taking cylinder; a shovel knife top cover is fixed at the top of the impact cylinder, and is provided with a shovel knife top cover center hole; an impact plate is arranged in the impact cylinder; a spring is arranged between the impact plate and the shovel knife top cover; the diameter of the impact plate is greater than the diameter of the soil taking cylinder and smaller than the diameter of the impact cylinder; the weighting rod penetrates through the shovel knife top cover center hole to be fixed with the impact plate; and a shovel knife bottom edge is arranged at the bottom of the soil taking cylinder. The Luoyang shovel is simple in structure, convenient for operation, low in labor intensity of operators, high in production efficiency, little in soil sample disturbance and high in soil sample extraction rate, is not liable to damage a connecting screw thread, and prolongs the service life of the Luoyang shovel.

Description

technical field [0001] The invention relates to an improvement of an engineering geological prospecting tool, in particular to a Luoyang shovel. Background technique [0002] With the rapid development of the national economy, the number of engineering construction projects is increasing, and the requirements for engineering geological exploration are also getting higher and higher. As an important means of obtaining physical geological data, engineering geological exploration work is mainly to take core or undisturbed soil samples in rock and soil layers. It is required to improve efficiency and ensure the quality of samples taken. During the process of taking samples, the samples should be kept The natural structure of the soil is used to measure the physical and mechanical properties of the soil and provide a design basis for engineering construction. For deep soil layers or rock samples, mechanical drilling rigs are often used to drill and take rock soil samples, and Lu...

AI Technical Summary

Problems solved by technology

[0004] The current Luoyang shovel has the following defects: (1) Due to the use of ordinary threaded connections, the weight and reaction force of the entire Luoyang shovel and soil are mostly passed through the ordinary thread when the Luoyang shovel rushes into the formation and when the Luoyang shovel is pulled up to lift the soil. The buckle bears, it is easy to cause the stress concentration of the threaded buckle and damage the threaded buckle

(2) The current Luoyang shovel is generally used for sampling in soft soil layers. For hard soil layers, the Luoyang shovel can be hammered with a hammer on the top of the extension rod to effectively enter the rock and soil layer, but ordinary threaded buttons are easily damaged under the action of hammering. , resulting in damage to the extension rod

(3) When the Luoyang shovel enters the hard soil layer, due to the increased friction between the soil layer and the shovel blade, it becomes more difficult to lift the Luoyang shovel manually, and even the shovel blade is difficult to pull out, and the labor intensity of the operator increases , Exploration efficiency decreased

(4) Most of the current Luoyang shovels are semi-circular or short-arc, and the soil samples are easy to fall off or disturb the soil samples when taking loose soil layers, which affects the quality of soil samples

These defects have limited the application of Luoyang shovel

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