Soil sample collecting device

By designing a soil sample collection device including a drill rod, a drill bit and a collection cylinder, the problems of susceptibility to contamination and complex operation in traditional soil sample collection methods are solved, and high-precision soil sample collection is achieved in the deep soil.

CN222561341UActive Publication Date: 2025-03-04CHINA COAL YANGTZE RIVER INFRASTRUCTURE CONSTR CO LTD
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Patent Information

Application Number
CN202420988504.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2025-03-04
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

Traditional soil sample collection methods have problems such as susceptibility to contamination and complex operation. Especially when sampling deep in the soil, it is difficult to ensure the accuracy of the sampling and the integrity of the soil sample.

Method used

A soil sample collection device is designed, including a drill rod, a drill bit and a plurality of acquisition cylinders. Through drilling of the drill rod and the drill bit, the acquisition cylinder is transported to the depth of the soil. During the drilling process, the lower end of the collection barrel is in a closed state to prevent soil from entering; at the sampling depth, rotate the drill pipe in reverse to make the lower end of the collection barrel be in an open state, completing high-precision collection of soil samples.

Benefits of technology

It realizes high-precision collection of soil samples deep in the soil, avoids soil sample pollution, and improves the accuracy and efficiency of the sampling process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a soil sample collecting device which comprises a drill rod, the lower end of the drill rod is connected with a drill bit, a plurality of collecting cylinders are arranged in the drill rod, a plurality of through holes are formed in the drill bit, a plurality of bolts are arranged on the side wall of the lower end of the drill rod, and an arc-shaped groove is formed in the side wall of the drill bit. By means of drilling of the drill rod and the drill bit, the collecting barrel can be conveyed to the deep position of soil, when a hole is drilled to the sampling depth, the drill rod is reversely rotated, the drill bit does not move in the drilled hole under the action of soil resistance, at the moment, the threaded ends of the bolts can slide along the arc-shaped grooves, and therefore the sampling barrel can be conveyed to the deep position of the soil. The threaded end of the bolt is promoted to move to the other end of the arc-shaped groove, the through hole is aligned with the collection cylinder, the lower end of the collection cylinder is in an open state, the collection cylinder is moved downwards, the collection cylinder extends out of the through hole, and soil sample collection is completed.
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Description

Technical Field

[0001] The utility model relates to the technical field of soil sample collection, in particular to a soil sample collection device. Background Art

[0002] Traditional soil sampling methods often have problems such as easy sampling contamination and complicated operation, especially when sampling deep in the soil, these problems are particularly prominent.

[0003] Traditional soil sample collection devices usually rely on manual excavation or simple drilling tools. These methods are not only inefficient, but also difficult to ensure the accuracy of sampling and the integrity of soil samples. Especially during the sampling process, impurities in the soil can easily enter the collection tube, causing the soil sample to be contaminated and affecting the accuracy of subsequent analysis. Therefore, a soil sample collection device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a soil sample collection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a soil sample collection device, comprising a drill rod, a drill bit is connected to the lower end of the drill rod, a plurality of collection tubes are arranged inside the drill rod, the bottom of the collection tubes is open, and a plurality of through holes for the collection tubes to extend from the drill rod are opened on the drill bit;

[0006] A plurality of bolts are arranged on the side wall of the lower end of the drill rod, and an arc groove is opened on the side wall of the drill bit, and the threaded ends of the plurality of bolts are slidably connected inside the corresponding arc grooves;

[0007] During the drilling process, when the bolt is located at one end of the arc groove, the through hole and the collection tube are staggered. At this time, the lower end of the collection tube is in a closed state. In this state, when the drill bit and the drill rod drill deep into the soil layer, soil is prevented from entering the interior of the collection tube, ensuring that no impurities enter the interior of the collection tube during the drilling process;

[0008] When the hole is drilled to the sampling depth, the drill rod is rotated in the opposite direction. At this time, the drill bit is immobile in the borehole due to the resistance of the soil. At this time, the threaded end of the bolt will slide along the arc groove, causing the threaded end of the bolt to move to the other end of the arc groove. When the bolt is located at the other end of the arc groove, the through hole is aligned with the collection tube, and the lower end of the collection tube is in an open state. When the collection tube is moved downward, the collection tube can extend from the inside of the through hole, thereby completing the high-precision collection of soil samples.

[0009] Preferably, a screw is provided at the center position of the upper end of the drill rod, the screw coincides with the axis of the drill rod, a pressure plate is contactlessly sleeved on the screw, a plurality of connecting rods are fixed to the lower surface of the pressure plate, the lower end of each connecting rod passes through the drill rod and is fixedly connected to the side wall of the collection tube, a rotating block is rotatably connected to the pressure plate, and the rotating block is meshingly sleeved on the screw.

[0010] Preferably, a soil sample collection device also includes a motor, the output shaft of the motor is connected to the upper end of the screw rod through a connecting head, the output shaft of the motor, the screw rod and the drill rod form an integrated structure, and when the motor is started, the screw rod and the drill rod can rotate synchronously with the output shaft of the motor.

[0011] Preferably, handles are provided at both ends of the motor, and the user can hold the handles to support the motor so that the motor remains above the erected drill rod.

[0012] Preferably, the drill rod and the side walls of the rotating block are provided with insertion holes, and a breaking rod is movably inserted into the insertion holes. When a breaking rod is inserted into the insertion hole on the drill rod and the insertion hole on the rotating block, the breaking rod on the drill rod is held still, so that the drill rod can be stabilized, and the breaking rod on the rotating block is moved, so that the breaking rod on the rotating block rotates with the rotating block, and when the breaking rod is removed from the insertion hole, the drill rod can be rotated for drilling.

[0013] Preferably, the lower end profile of the collecting tube is provided with an annular cutting blade for cutting soil.

[0014] Preferably, a spiral blade for lifting and transporting soil upward is provided on the outer wall of the drill rod. During the downward drilling process of the drill bit, a large amount of loose soil is generated in the borehole. As the drill rod rotates, the spiral blade rotates with the drill rod. At this time, the rotating spiral blade lifts the soil upward, and then discharges the generated loose soil from the borehole.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model can transport the collection tube to the deep soil through the drilling of the drill rod and the drill bit, and during the drilling process, the lower end of the collection tube is in a closed state, so as to prevent the soil from entering the interior of the collection tube, and ensure that no impurities enter the interior of the collection tube during the drilling process; when the hole is drilled to the sampling depth, the drill rod is rotated in the opposite direction, and the drill bit is immobilized in the borehole due to the resistance of the soil. At this time, the threaded end of the bolt will slide along the arc groove, prompting the threaded end of the bolt to move to the other end of the arc groove, so that the through hole is aligned with the collection tube, and the lower end of the collection tube is in an open state, and the collection tube is moved downward, and the collection tube extends from the inside of the through hole, thereby completing the soil sample collection; after the soil is collected in the interior of the collection tube, the collection tube is retracted into the drill rod, and then the drill rod and the drill bit are relatively rotated, and the through hole is staggered with the collection tube again, and then the lower end of the collection tube with the soil sample collected is blocked, and when the drill rod is pulled out of the borehole, the soil sample in the collection tube can be smoothly taken out, so as to prevent the soil sample in the collection tube from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram I of the utility model;

[0017] Figure 2 It is the overall structural schematic diagram II of the utility model;

[0018] Figure 3 This is an exploded view of the drill rod and drill bit of the utility model;

[0019] Figure 4 It is a cross-sectional view I of the drill rod, drill bit and collection tube of the utility model;

[0020] Figure 5 It is a cross-sectional view II of the drill rod, drill bit and collection tube of the utility model;

[0021] Figure 6 It is a cross-sectional view of the drill rod, drill bit, collection tube, bolt and screw rod of the utility model;

[0022] Figure 7 It is a cross-sectional exploded view of the drill rod, screw rod, pressure plate and rotating block of the utility model.

[0023] In the figure: 1. drill rod, 2. drill bit, 201. through hole, 202. arc groove, 3. collection tube, 4. bolt, 5. screw, 6. pressure plate, 7. rotating block, 8. connecting rod, 9. motor, 901. handle, 10. spiral blade, 11. jack, 12. breaking rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7 The utility model provides a technical solution: a soil sample collection device, comprising a drill rod 1, a drill bit 2 is connected to the lower end of the drill rod 1, and a plurality of collection tubes 3 are arranged inside the drill rod 1. Figure 2 As shown, the bottom of the collection tube 3 is open, and the drill bit 2 is provided with a plurality of through holes 201 for the collection tube 3 to extend from the drill rod 1;

[0026] A plurality of bolts 4 are arranged on the side wall of the lower end of the drill rod 1, and an arc groove 202 is opened on the side wall of the drill bit 2, and the threaded ends of the plurality of bolts 4 are slidably connected to the inside of the corresponding arc groove 202;

[0027] During the drilling process, when the bolt 4 is located at one end of the arc groove 202, the through hole 201 and the collection tube 3 are arranged alternately. At this time, the lower end of the collection tube 3 is in a closed state. In this state, when the drill bit 2 and the drill rod 1 drill deep into the soil layer, soil is prevented from entering the interior of the collection tube 3, ensuring that no impurities enter the interior of the collection tube 3 during the drilling process, thereby improving the accuracy of subsequent analysis;

[0028] When the hole is drilled to the sampling depth, the drill rod 1 is rotated in the opposite direction. At this time, the drill bit 2 is immobile in the borehole due to the resistance of the soil. At this time, the threaded end of the bolt 4 will slide along the arc groove 202, causing the threaded end of the bolt 4 to move to the other end of the arc groove 202. When the bolt 4 is located at the other end of the arc groove 202, the through hole 201 is aligned with the collection tube 3. At this time, the lower end of the collection tube 3 is in an open state. In this state, when the collection tube 3 is moved downward relative to the drill rod 1, the collection tube 3 can extend from the inside of the through hole 201, causing the collection tube 3 to be inserted into the inside of the soil, and the soil facing the collection tube 3 is collected into the collection tube 3, thereby completing the soil sample collection;

[0029] After the soil is collected in the collecting tube 3, the collecting tube 3 is moved upward relative to the drill rod 1 so that the collecting tube 3 is retracted into the drill rod 1, and then the drill rod 1 and the drill bit 2 are relatively rotated. In this way, the through hole 201 will be intertwined with the collecting tube 3 again, and then the lower end of the collecting tube 3 with the soil sample collected will be blocked. In this state, the soil sample in the collecting tube 3 can be smoothly taken out while the drill rod 1 is pulled out from the borehole, preventing the soil sample in the collecting tube 3 from falling.

[0030] like Figure 4-Figure 7As shown, in order to drive the collection tube 3 to slide inside the drill rod 1 and then realize the extension and retraction of the collection tube 3, specifically, a screw rod 5 is arranged at the center position of the upper end of the drill rod 1, and the screw rod 5 coincides with the axis of the drill rod 1. A pressure plate 6 is non-contactly sleeved on the screw rod 5, and a plurality of connecting rods 8 are fixed on the lower surface of the pressure plate 6. The lower end of each connecting rod 8 penetrates the drill rod 1 and is fixedly connected to the side wall of the collection tube 3. A rotating block 7 is rotatably connected to the pressure plate 6, and the rotating block 7 is meshingly sleeved on the screw rod 5;

[0031] The drill rod 1 is in a stationary state (the drill rod 1 is located in the borehole), and the rotating block 7 is rotated so that the rotating block 7 can move on the screw rod 5 along the axis of the screw rod 5 during the rotation process, so that the rotating block 7 moves along the axis of the screw rod 5 with the pressure plate 6, and the pressure plate 6 does not rotate. When the pressure plate 6 moves downward, the pressure plate 6 drives the collection tube 3 to move downward through the connecting rod 8, and then the collection tube 3 is extended from the drill rod 1. When the pressure plate 6 moves upward, the pressure plate 6 pulls the collection tube 3 upward through the connecting rod 8, so that the extended collection tube 3 is retracted into the interior of the drill rod 1 again.

[0032] like Figure 1 , Figure 2 As shown, in order to enable the drill rod 1 and the drill bit 2 to drill into the soil, specifically, a soil sample collection device further includes a motor 9, the output shaft of the motor 9 is connected to the upper end of the screw rod 5 through a connector, the output shaft of the motor 9, the screw rod 5 and the drill rod 1 form an integrated structure, and when the motor 9 is started, the screw rod 5 and the drill rod 1 can keep rotating synchronously with the output shaft of the motor 9;

[0033] like Figure 1 , Figure 2 As shown, in order to facilitate the user to perform drilling sampling operations, specifically, handles 901 are provided at both ends of the motor 9. When in use, the user holds the handles 901 to assist the motor 9 so that the motor 9 remains above the upright drill rod 1.

[0034] like Figure 2 , Figure 7 As shown, in order to facilitate driving the rotating block 7 to rotate on the screw rod 5, specifically, a socket 11 is opened on the side wall of the drill rod 1 and the rotating block 7, and a bend rod 12 is movably inserted into the socket 11 on the drill rod 1 and the socket 11 on the rotating block 7. When a bend rod 12 is respectively inserted into the socket 11 on the drill rod 1 and the socket 11 on the rotating block 7, the bend rod 12 on the drill rod 1 is held still, and then the drill rod 1 can be stabilized, and the bend rod 12 on the rotating block 7 is bend, so that the bend rod 12 on the rotating block 7 rotates with the rotating block 7. When the bend rod 12 is removed from the socket 11, the rotary drilling operation of the drill rod 1 can be carried out.

[0035] like Figure 2As shown, when the collecting tube 3 extends downward from the drill rod 1, in order to enable the collecting tube 3 to cut the soil, specifically, the lower end profile of the collecting tube 3 is provided with an annular cutting blade for cutting the soil.

[0036] Specifically, a spiral blade 10 for lifting and transporting soil upward is provided on the outer wall of the drill rod 1. During the downward drilling process of the drill bit 2, a large amount of loose soil is generated in the borehole. As the drill rod 1 rotates, the spiral blade 10 rotates with the drill rod 1. At this time, the rotating spiral blade 10 lifts the soil upward, and then discharges the generated loose soil from the borehole.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sample collection device, comprising a drill rod (1), characterized in that: The lower end of the drill rod (1) is connected to a drill bit (2), a plurality of collection tubes (3) are arranged inside the drill rod (1), and a plurality of through holes (201) are provided on the drill bit (2) for allowing the collection tubes (3) to extend from the drill rod (1); A plurality of bolts (4) are arranged on the side wall of the lower end of the drill rod (1), and an arc-shaped groove (202) is opened on the side wall of the drill bit (2), and the threaded ends of the plurality of bolts (4) are slidably connected inside the corresponding arc-shaped grooves (202); When the bolt (4) is located at one end of the arc-shaped groove (202), the through hole (201) and the collection tube (3) are arranged in an alternating manner; When the bolt (4) is located at the other end of the arc-shaped groove (202), the through hole (201) is aligned with the collection tube (3).

2. A soil sample collection device according to claim 1, characterized in that: A screw rod (5) is arranged at the center position of the upper end of the drill rod (1), a pressure plate (6) is non-contactly sleeved on the screw rod (5), a plurality of connecting rods (8) are fixed to the lower surface of the pressure plate (6), the lower end of each connecting rod (8) passes through the drill rod (1) and is fixedly connected to the side wall of the collection tube (3), a rotating block (7) is rotatably connected to the pressure plate (6), and the rotating block (7) is meshingly sleeved on the screw rod (5).

3. A soil sample collection device according to claim 2, characterized in that: It also includes a motor (9), the output shaft of the motor (9) being connected to the upper end of the screw rod (5) via a connector.

4. A soil sample collection device according to claim 3, characterized in that: Handles (901) are provided at both ends of the motor (9).

5. A soil sample collection device according to claim 1, characterized in that: The drill rod (1) and the side wall of the rotating block (7) are provided with an insertion hole (11), and a breaking rod (12) is movably inserted into the insertion hole (11).

6. A soil sample collection device according to claim 1, characterized in that: The lower end profile of the collecting tube (3) is provided with an annular cutting blade for cutting soil.

7. A soil sample collection device according to claim 1, characterized in that: The outer wall of the drill rod (1) is provided with a spiral blade (10) for lifting and transporting soil upwards.