A pedal-assisted double-lobed cylindrical soil sampler

Abstract

The invention relates to a pedal-assisted double-lobed cylindrical soil sampler. The invention is simple in structure, convenient to carry, saves time and labor, minimal disturbance to the original soil, easy separation of the sample from the sampling cylinder, and can obtain a complete soil column sample for the soil with high viscosity and extremely loose soil, which greatly improves the sampling efficiency. Efficiency and quality. The invention includes a foot pedal, a fixing ring, a tensile fiber belt, a ring knife, a sampling cylinder, a fixed snap ring, a screw rod and a handle. The foot pedal and the fixing ring are connected by the tensile fiber belt; A cylinder composed of two semi-annular cylinder bodies. The upper end of the sampling cylinder is connected with the fixed snap ring through a cylindrical protrusion and a snap groove. The cavity in the fixed snap ring is provided with a double-lobed washer and a conical indenter, which can The rotating conical pressure head on the flap washer is connected with the bottom end of the screw rod, and the top end of the screw rod is connected with the handle; the fixing ring is arranged on the screw rod between the handle and the fixing snap ring, and rotates relatively with the screw rod.

Description

technical field [0001] The present invention relates to a soil sampler, in particular to a pedal-assisted double-lobed cylindrical soil sampler. Background technique [0002] The collection of soil profile samples is the basis of soil taxonomic investigation, soil configuration analysis, soil fertility and physical property research, material migration and transformation in soil, and soil ecological investigation. The soil drilling method is often used to collect columnar samples. The traditional sampling soil drill is generally composed of a ring knife at the bottom, a sampling cylinder connected to the ring knife, and a handle on the upper part. When taking soil samples, the sampler holds the handle with both hands, turns it and presses it down hard, so that the soil drill enters downward. In deep soil, when the soil texture is relatively hard and dense, it is necessary to hit down with a heavy object to complete the sampling. This sampling method is particularly time-cons...

AI Technical Summary

Problems solved by technology

The traditional soil sampling drill is generally composed of a ring knife at the bottom, a sampling cylinder connected with the ring knife, and an upper handle. When taking soil samples, the sampler holds the handle with both hands, rotates and presses down hard, so that the soil drill goes down. For deep soil, when the soil texture is relatively hard and dense, it is necessary to use heavy objects to strike down hard to complete the sampling. This sampling method is particularly time-consuming and laborious, and the impact of heavy objects is easy to damage the sampler and disturb the soil layer, affecting the sampling results. reliability

In addition, for soil layers with high density or viscosity, the soil samples collected by the tubular sampler are difficult to take out, and part of the surface soil will be lost, and different soil samples will be mixed during multiple sampling; for soil with a particularly loose structure, The soil sample collected by the tubular sampler is easy to scatter when the sample is taken out, and it is difficult to obtain a complete columnar sample

[0003] In order to achieve the goal of saving time and labor, the sampler generally adopts mechanical drive or inertial vibration. For example, application number CN201611113814.1 discloses a layered multifunctional soil sampler that utilizes hydraulic pressure and labor saving, which adopts hydraulic transmission. To achieve the purpose of saving labor, but the sampler must anchor the hydraulic cylinder on the ground. When collecting soil samples on the spot, the soil surface is usually loose and often cannot provide enough anchoring force. Therefore, this type of labor-saving sampler does not Not practical; use the inertial force produced by the reciprocating and synchronous motion of heavy objects to achieve the purpose of saving manpower, such as a kind of internal combustion circular vibration detachable soil sampler disclosed by application number CN2014203228520.0, which mainly uses a diesel engine to drive an eccentric block High-speed rotation generates vibration force to drive the sampling cylinder deep into the soil. This design obviously has the problems of high cost and heavy equipment weight, and the vibration force will disturb the soil.

[0004] In order to achieve the goal of taking out the soil sample conveniently, the sampler generally adopts a movable pusher to push the soil sample out of the sampling cylinder, such as the push-out type soil drill disclosed in the application number CN201320716753. The bulldozer can push the collected soil out of the drill bit and maintain the characteristics of a columnar soil sample at a certain depth. This type of sampler is suitable for sampling sandy soil farmland. , due to the high frictional resistance between the soil and the inner wall of the drill barrel, it is difficult to push out the soil in the drill barrel by manpower, or even if it is pushed out vigorously with the help of tools, the structure of the original soil column will be changed and the quality of the sampling results will be affected

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