CN213209554U

CN213209554U - Forestry soil sampling device

Info

Publication number: CN213209554U
Application number: CN202022226314.7U
Authority: CN
Inventors: 刘云超; 韩风仪; 刘禹
Original assignee: Chifeng University
Current assignee: Chifeng University
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-05-14
Anticipated expiration: 2030-10-09

Abstract

The utility model provides a forestry soil sampling device belongs to the soil analysis field, including sampler barrel, positioner and rotation spanner. The outer surface of the sampling tube is fixed with a helical blade, the body of the sampling tube is provided with screw holes, samples with different depths are obtained from the screw holes, and the top of the sampling tube is provided with a force application device. The positioning device is provided with positioning bulges at the periphery, so that the positioning bulges can be conveniently inserted into soil for positioning, and the positioning holes of the positioning device are provided with engaging grooves which can be engaged with helical blades of the sampling cylinder for maintaining the soil drilling direction of the sampling cylinder. The rotating spanner is sleeved on the force applying device of the sampling cylinder through the sleeve. When the sampler is used, the rotating wrench provides power for rotation of the sampling cylinder, and the sampling cylinder vertically drills to the deep part of the soil under the assistance of the positioning device so as to obtain each layer of soil sample. The utility model has the advantages of manual operation, can once take out not mutual contamination, convenient to carry, the forest zone field operation of being convenient for between the soil sample of the different degree of depth, each soil layer sample.

Description

Forestry soil sampling device

Technical Field

The utility model belongs to the soil analysis field specifically is a forestry soil sampling device.

Background

The soil is composed of mineral substances formed by weathering of rocks, animals and plants, organic matters generated by decay of microbial residues, soil organisms (solid-phase substances), water (liquid-phase substances), air (gas-phase substances), oxidized humus and the like. The analysis of the components of the soil is very important, and the content of various components in the soil can be judged through detection and analysis of the soil, so that the plant variety suitable for being planted in the soil can be determined conveniently, and improvement measures can be made conveniently.

In the field of forestry production and research, a soil sampler is often used for collecting soil samples for tree growth. The sampling device on the market at present mainly has the following problems:

(1) carry portable sampler, the function is single, and the sample depth is lighter, needs sample many times just can obtain the sample of the different degree of depth, and the sampling process is loaded down with trivial details.

(2) The multifunctional sampler is mostly driven by an electric motor and a small gasoline/diesel internal combustion engine, and has the problem of difficult carrying in field operation in forest areas.

In view of this, a soil sampling device for forestry is proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a soil sampling device for forestry soil to solve that small-size sampler sampling depth is shallow, the sampling process is loaded down with trivial details, large-scale sampler carries the difficulty, is unfavorable for the problem of the open-air sample in woodland.

A forestry soil sampler comprises a sampling cylinder, and a positioning device comprises the sampling cylinder and the positioning device; the top of the sampling cylinder is detachably provided with a rotary wrench, and the positioning device is detachably arranged at the bottom of the sampling cylinder; the sampling tube comprises a tube body, a necking, a helical blade, a screw hole, a force application device and a bolt; the barrel body is a hollow cylinder which is communicated from top to bottom, a helical blade is fixed on the outer side of the barrel body, a screw hole is formed in the side wall of the barrel body, a bolt is detachably matched with the screw hole, a force applying device is fixedly mounted at the top of the barrel body, a necking is formed in the inner side of the lower portion of the barrel body, a positioning bulge is distributed at the edge of the positioning device, a positioning hole is formed in the center of the positioning device, and a meshing groove meshed with the helical blade is formed in the inner wall of the positioning hole. The positioning bulge of the positioning device is used for grabbing the ground and preventing the positioning device from rotating along with the sampling cylinder.

Further, the pitch of the helical blade is not larger than the outer diameter of the barrel body.

Furthermore, the outer diameter of the necking is equal to the inner diameter of the cylinder body, the inner diameter of the necking is not less than 0.8 time of the inner diameter of the cylinder body, and the included angle between the slope of the necking and the lower end face of the cylinder body is not less than 70 degrees, so that the resistance of the necking can be reduced as much as possible, and the taken soil sample can be prevented from sliding downwards.

Furthermore, the screw holes are arranged along the axis direction of the cylinder body, and the cylinder body near the screw holes is provided with scales for marking the positions of the screw holes, so that all the screw holes are not forced to be on a straight line parallel to the axis of the sampling cylinder.

Furthermore, the length of bolt is less than the wall thickness of stack shell, requires the bolt after with the screw hole cooperation, and the stack shell inside and outside bolt all does not have outstanding to reduce the frictional force between screw hole, bolt and the soil layer as far as possible, conveniently bore the soil layer and acquire the sample.

Furthermore, the force applying device is positioned at the top of the sampling tube and is fixedly connected with the sampling tube coaxially, the inner diameter of the force applying device is not smaller than that of the sampling tube, the outer shape of the force applying device is matched with that of a sleeve of the rotary wrench, and the rotary wrench is sleeved on the force applying device to apply a rotating torque.

The utility model discloses a theory of operation does: screwing each screw hole of the sampling cylinder by using a bolt so that no bolt protrudes from the inner side surface and the outer side surface of the cylinder body of the sampling cylinder; engaging a positioning device with a helical blade of the sampling tube at the bottom of the sampling tube; the sleeve of the rotary wrench is sleeved on the force applying device at the top of the sampling tube. Applying a rotating torque on the rotating wrench, starting drilling the sampling cylinder into the ground, rotating the sampling cylinder in a positioning device, fixing the positioning device on the ground through a positioning bulge, and maintaining the soil drilling direction of the sampling cylinder; and the soil sample positioned in the sampling cylinder enters the sampling cylinder. After the specified drilling depth is reached, the wrench is rotated to rotate reversely, and the sampling cylinder starts to upwards withdraw from the soil layer. Because the bottom in the sampling tube has the throat, the soil sample that gets into the inside of sampling tube is difficult for the landing, just follows the sampling tube and is taken out. After the sampling cylinder is taken out of the soil layer, the positioning device and the rotary wrench are disassembled, then each bolt is disassembled, and soil samples with different depths can be taken from each screw hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the forestry soil sampling device is provided, and the sampling depth is deeper through the assistance of the helical blade. The sampling device can take out soil samples of different depths at one time; the sampling device is convenient to carry, manually operated and convenient for forest field operation.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of a rotating wrench.

Fig. 3 is a top view of the sampling tube.

Fig. 4 is a side view of the positioning device.

Fig. 5 is a top view of the positioning device.

Fig. 6 is a schematic view of a bolt.

Fig. 7 is a schematic view of a throat.

Fig. 8 is a schematic view of a force application device.

In the schematic diagram: 1-sampling cylinder, 11-cylinder body, 12-necking, 13-helical blade, 14-screw hole, 15-forcing device, 16-bolt, 2-positioning device, 21-positioning protrusion, 22-positioning hole, 23-engaging groove, 3-rotating wrench, 31-handle and 32-sleeve.

Detailed Description

The technical solution of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

A forestry soil sampler comprises a sampling cylinder 1 and a positioning device 2; the top of the sampling tube 1 is detachably provided with a rotary wrench 3, and the positioning device 2 is detachably arranged on the outer side of the sampling tube 1; the sampling tube 1 comprises a tube body 11, a necking 12, a helical blade 13, a screw hole 14, a force applying device 15 and a bolt 16; the barrel body 11 is a hollow cylinder which is through up and down, a helical blade 13 is fixed on the outer side of the barrel body 11, a screw hole 14 is formed in the side wall of the barrel body 11, a bolt 16 is detachably matched with the screw hole 14, a force applying device 15 is fixedly installed at the top of the barrel body 11, and a necking 12 is fixedly installed on the inner side of the lower portion of the barrel body 11; the bottom surface of the positioning device 2 close to the edge is distributed with positioning protrusions 21, the center of the positioning device 2 is provided with a positioning hole 22, and the inner wall of the positioning hole 22 is provided with an engaging groove 23 which can be engaged with the helical blade 13.

Further, the pitch of the helical blade 13 is not larger than the outer diameter of the barrel 11, and in this embodiment, the pitch of the helical blade 13 is preferably 0.5 times the outer diameter of the barrel 11, so as to reduce the applied torque when the sampling barrel is drilled into soil. The helical blade 13 is preferably connected to the outside of the barrel 11 by welding.

Furthermore, a necking 12 at the lower part of the sampling tube 1 is connected with the inner side of the tube body 11 in a welding mode, the inner diameter of the necking 12 is preferably 0.9 times of the straight inner diameter of the tube body 11, and the included angle between the inclined plane of the necking 12 and the lower bottom surface of the tube body is 80 degrees, so that the resistance of the necking 12 can be reduced, and the taken soil sample can be prevented from slipping down.

Further, the lower bottom surface of the sampling tube 1 is used as a zero point on the tube body 11, a screw hole is formed in the axial direction of the tube body 11 every 10cm, the screw hole is kept away from the spiral blade in the hole forming process, the screw hole is not forced to be on a straight line parallel to the axial line of the tube body 11, and the size of the screw hole is suitable for conveniently taking out a soil sample.

Further, the length of the bolt 16 is smaller than the wall thickness of the barrel 11, and the bolt 16 and the screw hole 14 are matched without the bolt 16 protruding from the barrel 11, and in this embodiment, the bolt 16 is preferably a fastening bolt.

Further, in the present embodiment, the force applying device 15 preferably has a structure of an inner side circle and an outer side regular hexagon. The sleeve 32 of the rotary wrench 3 is adapted to the outer shape of the force application device 15, and a regular hexagon structure is also adopted, and the sleeve 32 can be sleeved on the outer side of the force application device 15. The diameter of the inner circle of the force application device 15 is preferably equal to the inner diameter of the barrel 11, and the force application device 15 is coaxially and fixedly arranged at the top of the barrel 11.

Further, the sampling cylinder 1 is preferably made of a stainless steel material to prevent the material of the sampling cylinder 1 from contaminating the soil sample.

The specific implementation steps are as follows:

1) assembling, screwing the bolt 16 into the screw hole 14 to ensure that no bolt 16 protrudes from the inside and outside of the barrel body 11, rotatably connecting the positioning device 2 with the sampling barrel 1 from the bottom of the sampling barrel 1 through the engaging groove 23, and sleeving the rotating wrench 3 on the force applying device 15 at the top of the sampling barrel 1 through the sleeve 32.

2) And (3) drilling soil, applying a rotating torque on a handle 31 of the rotating wrench 3 to enable the sampling cylinder 1 to drill into a soil layer, and stopping rotation when the sampling cylinder 1 reaches a preset depth according to the sampling depth requirement.

3) And (3) withdrawing, applying reverse rotation torque to the rotary wrench 3 during soil drilling, withdrawing the sampler 1 with the soil sample from the soil layer, and removing the rotary wrench 3 and the positioning device 2 when the soil layer is completely withdrawn.

4) And (4) sampling, namely, flatly placing the sampling cylinder, sequentially opening the screw holes, taking out the soil sample and recording the depth value.

The utility model uses the rotary wrench as the power driving mechanism, adopts the manual driving, and is convenient to carry; the sampling depth of the sampling cylinder is large, and samples with all depths can be taken out at one time; the position of the sample strictly corresponds to the depth, and the samples are not mutually polluted.

The above-described embodiment is only one of the embodiments of the present invention, and is not intended to limit the present invention. Equivalent substitutions or changes can be made by those skilled in the art according to the disclosure of the present invention and are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a forestry soil sampling device which characterized in that: comprises a sampling cylinder (1) and a positioning device (2); the top of the sampling tube (1) is detachably provided with a rotary wrench (3), and the positioning device (2) is detachably arranged on the outer side of the sampling tube (1); the sampling tube (1) comprises a tube body (11), a necking (12), a helical blade (13), a screw hole (14), a force applying device (15) and a bolt (16); the barrel body (11) is a hollow cylinder which is through up and down, a helical blade (13) is fixed on the outer side of the barrel body (11), a screw hole (14) is formed in the side wall of the barrel body (11), a bolt (16) is detachably matched with the screw hole (14), a force application device (15) is fixedly installed at the top of the barrel body (11), and a necking opening (12) is fixedly installed on the inner side of the lower portion of the barrel body (11); the bottom surface of the positioning device (2) close to the edge is distributed with positioning bulges (21), the center of the positioning device (2) is provided with a positioning hole (22), and the inner wall of the positioning hole (22) is provided with an engaging groove (23) engaged with the helical blade (13).

2. The forestry soil sampling device of claim 1, wherein: the pitch of the helical blade (13) is not larger than the outer diameter of the barrel body (11).

3. The forestry soil sampling device of claim 1, wherein: the external diameter of the necking (12) is equal to the internal diameter of the cylinder body (11), the internal diameter of the necking (12) is not less than 0.8 time of the internal diameter of the cylinder body (11), and the included angle between the slope of the necking (12) and the lower bottom surface of the cylinder body (11) is not less than 70 degrees.

4. The forestry soil sampling device of claim 1, wherein: the screw holes (14) are arranged along the axis direction of the cylinder body (11), and scales are marked on the cylinder body.

5. The forestry soil sampling device of claim 1, wherein: the length of the bolt (16) is smaller than the wall thickness of the barrel body (11).

6. The forestry soil sampling device of claim 1, wherein: the force application device (15) is coaxially sleeved on the top of the sampling tube (1), the inner part of the force application device (15) is in a penetrating cylindrical shape, the outer part of the force application device (15) is in a polygonal shape, the inner diameter of the force application device (15) is not smaller than that of the sampling tube (1), and the outer shape of the force application device (15) is matched with that of a sleeve (32) of the rotary wrench (3).