A soil sampling device for geotechnical engineering

Abstract

The utility model discloses a soil sampling device for geological engineering relates to soil sampling device technical field, including drilling machine, and the output of drilling machine is connected with the outer wall pipe, and the pipe body in -out wall pipe is provided with the inner bushing, and the top pipe body circumference lateral wall of inner bushing is equipped with the limiting hole, and the top pipe body circumference lateral wall of out -of -wall pipe is provided with the limiting mechanism, and the top wall of out -of -wall pipe is provided with the auxiliary separation mechanism. The utility model discloses through the separation design of inside and outside pipe, adopts the double structure of the separation of inner bushing and out -of -wall pipe. The outer wall pipe is connected with the drilling machine, is responsible for the impact and broken soil, and the inner bushing is responsible for containing and preserving the undisturbed soil sample. After sampling is completed, only needs the inner bushing to take out under the assistance of limiting mechanism and auxiliary separation mechanism, has greatly preserved the original structure and level of soil sample, and conveniently sends the inspection. After sampling is completed, the inner bushing is separated from the outer wall pipe under the cooperation of limiting mechanism and auxiliary separation mechanism, thereby realizes the separation of inner bushing and outer wall pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of soil sampling devices, specifically a soil sampling device for geological engineering. Background Technology

[0002] Soil sampling devices for geological engineering are specialized equipment used in the field of geological engineering to collect soil samples from the surface or at specific depths underground. Their core function is to obtain samples that reflect the original physical properties (such as structure and porosity), chemical properties (such as composition and degree of pollution), or mechanical properties (such as density) of the soil, providing basic data support for geological exploration, engineering design, environmental assessment, and other work.

[0003] Chinese patent CN222166599U discloses a soil sampling device for geological engineering. The device features a sampling outer tube and a handle at the top of a movable rod. The outer wall of the sampling outer tube has graduations, and a drill bit is threaded onto the end of the tube. A sampling chamber is slidably installed inside the outer tube above the drill bit. A spring connects the drill bit and the sampling chamber, which contains a retractable sampling device. The device's advantages include a simple structure, portability, and the ability for the user to control the extension and retraction of the claw head using the spring force to sample different soil layers. For hard soil layers, a vibratory hammer can be used to break through, saving time and effort. A positioning support provides a stable fulcrum for the sampling outer tube on the ground and also provides a reference for the user to observe the graduations.

[0004] However, the sampling device disclosed in the above patent still has certain shortcomings in actual application. Its sampling chamber is a single tube structure. When it encounters hard soil layers, gravel layers or deep soil, the sampling tube is prone to deformation and jamming, which in turn damages the original structure and layers of the internal soil. Utility Model Content

[0005] The purpose of this utility model is to provide a soil sampling device for geological engineering, in order to solve the problem mentioned in the background art that the sampling chamber of the existing sampling device is a single tube structure, which is prone to deformation and jamming when encountering hard soil layers, gravel layers or deep soil layers, resulting in damage to the original structure and layers of the internal soil sample.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a soil sampling device for geological engineering, comprising a drilling rig, an outer wall pipe connected to the output end of the drilling rig, an inner liner pipe provided inside the outer wall pipe, a limiting hole provided on the circumferential side wall of the top of the inner liner pipe, a limiting mechanism provided on the circumferential side wall of the top of the outer wall pipe, and an auxiliary release mechanism provided on the top wall of the outer wall pipe.

[0007] Preferably, the limiting mechanism includes a fixed frame, a limiting rod, a pressing block, and a first spring. The fixed frame is fixedly installed on the top circumferential side wall of the outer wall tube, and two fixed frames are symmetrically arranged. The outer end of the limiting rod movably penetrates the side wall of the fixed frame away from the outer wall tube, and the inner end of the limiting rod movably penetrates the wall of the outer wall tube and extends into the cavity of the limiting hole. The pressing block and the first spring are both located inside the frame of the fixed frame. The pressing block is fixedly sleeved on the surface of the limiting rod, and the first spring is sleeved on the surface of the limiting rod, and the first spring is located on the side of the pressing block away from the outer wall tube.

[0008] Preferably, the auxiliary release mechanism includes an auxiliary frame, a pressing rod, and a reset block. Two auxiliary frames are provided, and the two auxiliary frames are respectively fixedly installed on the top walls of the two sides of the outer wall tube. The rod body of the pressing rod moves through the upper and lower side walls of the auxiliary frame, and the cross-section of the auxiliary frame is "F" shaped. The reset block is located between the upper and lower side walls of the auxiliary frame, and the reset block is fixedly sleeved on the surface of the rod body of the pressing rod.

[0009] Preferably, the auxiliary release mechanism further includes a second spring and a through hole. The second spring is located between the upper and lower side walls of the auxiliary frame and is sleeved on the surface of the extrusion rod. The second spring is located at the bottom of the reset block. The through holes are respectively opened on the top walls of the outer wall tube and are located directly below the extrusion rod. The extrusion rod is located directly above the top wall of the inner liner tube.

[0010] Preferably, the outer wall tube has two symmetrically formed guide grooves on its inner circumference, and the inner liner tube has two symmetrically distributed guide protrusions fixed on its outer circumference, the guide protrusions being slidably connected in the groove cavity of the guide groove.

[0011] Preferably, the outer wall of the outer tube is fixed with helical teeth, and the inner wall of the inner liner tube is provided with anti-slip ridges.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention employs a dual structure with separate inner and outer tubes. The outer tube connects to the drilling rig and is responsible for impacting and breaking up the soil; the inner tube contains and preserves the original soil sample. After sampling, the inner tube can be quickly removed with the assistance of a limiting mechanism and an auxiliary release mechanism, greatly preserving the original structure and layers of the soil sample and facilitating testing. During sampling, the drilling rig drives the outer tube to rotate, and the spiral teeth cause the outer tube to drill into the soil, extracting the soil sample into the inner tube. The dual structure of the inner and outer tubes enhances the protection of the sampled soil. After sampling, two limiting rods are pulled outwards simultaneously, causing the compression block to squeeze the first spring, allowing the limiting rod to be pulled out of the limiting hole on the surface of the inner tube. During this process, pressing the compression rod causes the reset block to squeeze the second spring, causing the compression rod to descend through the through hole and apply a downward force to the inner tube, causing the inner tube to detach from the outer tube, thus achieving separation of the inner and outer tubes. Attached Figure Description

[0014] Figure 1 This is a first-view structural schematic diagram of a soil sampling device for geological engineering according to the present invention;

[0015] Figure 2 This is a second-view structural schematic diagram of a soil sampling device for geological engineering according to the present invention;

[0016] Figure 3 This is a third-view structural diagram of a soil sampling device for geological engineering according to the present invention;

[0017] Figure 4 This is a schematic diagram of the inner liner structure of a soil sampling device for geological engineering according to this utility model.

[0018] In the diagram: 1. Drilling rig; 2. Outer wall tube; 3. Spiral teeth; 4. Fixing frame; 5. Limiting rod; 6. Extrusion block; 7. First spring; 8. Auxiliary frame; 9. Extrusion rod; 10. Reset block; 11. Second spring; 12. Through hole; 13. Guide groove; 14. Inner liner tube; 15. Guide protrusion; 16. Anti-slip texture; 17. Limiting hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a soil sampling device for geological engineering, including a drill rig 1, an outer wall pipe 2 connected to the output end of the drill rig 1, the drill rig 1 drives the outer wall pipe 2 to rotate, an inner liner pipe 14 is set inside the outer wall pipe 2 for collecting sampled soil, a limiting hole 17 is opened on the top circumferential side wall of the inner liner pipe 14, two limiting holes 17 are symmetrically opened, a limiting mechanism is set on the top circumferential side wall of the outer wall pipe 2 to realize the connection and fixation of the inner liner pipe 14 and the outer wall pipe 2, and also to facilitate the separation of the two, an auxiliary separation mechanism is set on the top wall of the outer wall pipe 2 to realize the separation of the inner liner pipe 14 and the outer wall pipe 2.

[0021] The limiting mechanism includes a fixing frame 4, a limiting rod 5, a pressing block 6, and a first spring 7. The fixing frame 4 is welded to the top circumferential side wall of the outer wall tube 2, and two fixing frames 4 are symmetrically arranged. The outer end of the limiting rod 5 moves through the side wall of the fixing frame 4 away from the outer wall tube 2, and the inner end of the limiting rod 5 moves through the wall of the outer wall tube 2 and extends into the cavity of the limiting hole 17. When the limiting rod 5 is inserted into the limiting hole 17, the inner liner tube 14 is limited and fixed inside the outer wall tube 2. The pressing block 6 and the first spring 7 are both located inside the frame of the fixing frame 4. The pressing block 6 is welded and sleeved on the outer wall tube 2. On the surface of the limiting rod 5, a first spring 7 is sleeved, and the first spring 7 is located on the side of the pressing block 6 away from the outer wall tube 2. This is to ensure that after the limiting rod 5 is released, it automatically resets under the action of the first spring 7 and the pressing block 6. The auxiliary release mechanism includes an auxiliary frame 8, a pressing rod 9, and a reset block 10. Two auxiliary frames 8 are provided, each welded to the top wall of both sides of the outer wall tube 2. The pressing rod 9 moves through the upper and lower side walls of the auxiliary frame 8, and the cross-section of the auxiliary frame 8 is "F" shaped. The reset block... The reset block 10 is located between the upper and lower side walls of the auxiliary frame 8, and is welded and sleeved on the surface of the pressing rod 9. The auxiliary release mechanism also includes a second spring 11 and a through hole 12. The second spring 11 is located between the upper and lower side walls of the auxiliary frame 8, and is sleeved on the surface of the pressing rod 9. The second spring 11 is located at the bottom of the reset block 10. Its purpose is to allow the pressing rod 9 to automatically reset under the action of the second spring 11 and the reset block 10 after the pressing rod 9 is released. The through holes 12 are respectively opened on the top walls of the outer wall tube 2 on both sides, and are located at the bottom of the pressing rod 9. Directly below the extrusion rod 9, which is located above the top wall of the inner liner tube 14, two guide grooves 13 are symmetrically opened on the inner circumference of the outer wall tube 2. Two symmetrically distributed guide protrusions 15 are fixed on the outer circumference of the inner liner tube 14. The guide protrusions 15 are slidably connected in the groove cavity of the guide groove 13. The purpose is to facilitate the smooth installation of the inner liner tube 14 into the outer wall tube 2, so that the limiting hole 17 is aligned with the limiting rod 5. The spiral teeth 3 are welded to the outer circumference of the outer wall tube 2. The inner wall of the inner liner tube 14 is provided with anti-slip ridges 16, which are intended to prevent the collected soil from falling off.

[0022] Working principle: The system employs a dual structure with separate inner and outer tubes, consisting of an inner liner tube 14 and an outer wall tube 2. The outer wall tube 2 connects to the drilling rig 1 and is responsible for impacting and breaking up the soil; the inner liner tube 14 is responsible for containing and preserving the original soil sample. After sampling, the inner liner tube 14 can be quickly removed from the outer wall tube 2 with the assistance of a limiting mechanism and an auxiliary detachment mechanism, thus preserving the original structure and layers of the soil sample to a great extent and facilitating its testing. During sampling, the drill rig 1 drives the outer wall tube 2 to rotate. Under the action of the spiral teeth 3, the outer wall tube 2 is drilled into the soil, and the sampled soil is collected into the inner liner tube 14. The dual structure of the inner liner tube 14 and the outer wall tube 2 enhances the protection strength of the sampled soil. After sampling, the two limiting rods 5 are pulled outward at the same time, causing the squeezing block 6 to squeeze the first spring 7, so that the limiting rod 5 is pulled out from the limiting hole 17 on the surface of the inner liner tube 14. During this process, the squeezing rod 9 can be pressed to cause the reset block 10 to squeeze the second spring 11, so that the squeezing rod 9 descends and passes through the through hole 12 to apply a downward force to the inner liner tube 14, causing the inner liner tube 14 to come out from the outer wall tube 2, thereby realizing the separation of the inner liner tube 14 and the outer wall tube 2.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for geological engineering, comprising a drilling rig (1), characterized in that: The output end of the drilling rig (1) is connected to an outer wall pipe (2). An inner liner pipe (14) is provided inside the outer wall pipe (2). A limiting hole (17) is opened on the circumferential side wall of the top pipe of the inner liner pipe (14). A limiting mechanism is provided on the circumferential side wall of the top pipe of the outer wall pipe (2). An auxiliary release mechanism is provided on the top wall of the outer wall pipe (2).

2. The soil sampling device for geological engineering according to claim 1, characterized in that: The limiting mechanism includes a fixed frame (4), a limiting rod (5), a pressing block (6), and a first spring (7). The fixed frame (4) is fixedly installed on the top circumferential side wall of the outer wall tube (2), and two fixed frames (4) are symmetrically arranged. The outer end of the limiting rod (5) moves through the side wall of the fixed frame (4) away from the outer wall tube (2), and the inner end of the limiting rod (5) moves through the wall of the outer wall tube (2) and extends into the cavity of the limiting hole (17). The pressing block (6) and the first spring (7) are both located in the frame of the fixed frame (4). The pressing block (6) is fixedly sleeved on the surface of the rod of the limiting rod (5), and the first spring (7) is sleeved on the surface of the rod of the limiting rod (5), and the first spring (7) is located on the side of the pressing block (6) away from the outer wall tube (2).

3. The soil sampling device for geological engineering according to claim 2, characterized in that: The auxiliary release mechanism includes an auxiliary frame (8), a pressing rod (9), and a reset block (10). There are two auxiliary frames (8), which are fixedly installed on the top walls of the outer wall tube (2) on both sides respectively. The rod of the pressing rod (9) moves through the upper and lower side walls of the auxiliary frame (8), and the cross-section of the auxiliary frame (8) is "F" shaped. The reset block (10) is located between the upper and lower side walls of the auxiliary frame (8), and the reset block (10) is fixedly sleeved on the surface of the rod of the pressing rod (9).

4. The soil sampling device for geological engineering according to claim 3, characterized in that: The auxiliary release mechanism also includes a second spring (11) and a through hole (12). The second spring (11) is located between the upper and lower side walls of the auxiliary frame (8) and is sleeved on the surface of the extrusion rod (9). The second spring (11) is located at the bottom of the reset block (10). The through hole (12) is opened on the top walls of the outer wall tube (2) on both sides and is located directly below the extrusion rod (9). The extrusion rod (9) is located directly above the top wall of the inner liner tube (14).

5. The soil sampling device for geological engineering according to claim 1, characterized in that: The outer wall tube (2) has two symmetrically opened guide grooves (13) on its inner circumference, and the inner lining tube (14) has two symmetrically distributed guide protrusions (15) fixed on its outer circumference. The guide protrusions (15) are slidably connected in the groove cavity of the guide groove (13).

6. The soil sampling device for geological engineering according to claim 1, characterized in that: The outer wall of the outer tube (2) is fixed with helical teeth (3), and the inner wall of the inner lining tube (14) is provided with anti-slip ridges (16).

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