A soil sampling device for geological detection and a sampling method thereof

Abstract

The present invention discloses a soil sampling device for geological detection and a sampling method thereof, and relates to the field of geological detection. The soil sampling device for geological detection comprises a support unit and a driving unit, wherein the driving unit is installed above the support unit, and the driving unit is connected to a sampling rod assembly in a transmission manner; the sampling rod assembly comprises a drill rod, an extension rod, and a driving rod, and spiral sections are provided on the outer sides of the drill rod and the extension rod, and connecting assemblies are provided between the ends of the drill rod and the extension rod and between the ends of the extension rod and the driving rod: an auxiliary installation and disassembly assembly is installed above the support unit. The soil sampling device for geological detection, when it is necessary to sample a deeper soil layer, adds a new extension rod and connects it to the driving rod; continues to turn on the driving unit so that the new extension rod is screwed into the soil layer, thereby realizing the sampling of deeper soil of small-sized equipment.

Description

Technical Field

[0001] The invention relates to the technical field of geological detection, in particular to a soil sampling device for geological detection and a sampling method thereof. Background Art

[0002] Soil sampling devices for geological testing, also known as soil samplers, are used to collect qualitative and quantitative information from soil to measure soil properties, estimate ongoing environmental impacts, and changes in soil quality.

[0003] The basic working principle of soil sampling devices is to extract soil samples from the ground through certain mechanical or physical means for subsequent analysis and testing. These devices are usually designed with sharp sampling blades or drill bits that can easily cut into the soil and obtain the required samples.

[0004] There are generally two types of soil sampling devices. One type is composed of a drill rod and a sampling ring cutter. The sampling ring cutter is inserted into the soil by the drill rod. When the sampling ring cutter is pulled out, the inside of the sampling ring cutter can take out a complete soil sample. However, the insertion of the drill rod into the soil is achieved by squeezing the soil layer with a downward thrust. The deeper the soil layer, the greater the pressure. It is difficult to insert the sampling ring cutter into a deeper soil layer. Therefore, shallow soil is generally sampled. The second type is composed of an electric motor and a drill rod with a spiral blade. When the electric motor is working, it can drive the drill rod with the spiral blade to rotate. When the drill rod is inserted into the soil and rotates, the spiral blade can be used to bring out the soil, thereby facilitating the insertion of the drill rod into a deeper depth to achieve sampling.

[0005] When sampling deeper soil using an electric motor and a drill rod with spiral blades, the sampling depth is determined by the length of the drill rod. Although deeper soil sampling can be achieved by improving the specifications of the soil sampling device and its drill rod, in some more remote areas, large equipment is difficult to carry and transport. Therefore, the specifications of the soil sampling device are limited, and it is difficult to achieve deeper soil sampling in remote areas. Therefore, the present application proposes a soil sampling device for geological testing and a sampling method thereof. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a soil sampling device for geological detection and a sampling method thereof, which solves the problem that when sampling deeper soil using an electric motor and a drill rod with spiral blades, the sampling depth is determined by the length of the drill rod. Although deeper soil sampling can be achieved by improving the specifications of the soil sampling device and its drill rod, in some more remote areas, large equipment is difficult to carry and transport. Therefore, the specifications of the soil sampling device are limited, and it is difficult to achieve deeper soil sampling in remote areas.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A soil sampling device for geological detection, comprising a support unit and a driving unit, wherein the driving unit is installed above the support unit, and the driving unit is transmission-connected with a sampling rod assembly;

[0008] The sampling rod assembly includes a drill rod, an extension rod and a driving rod, wherein the drill rod, the extension rod and the driving rod are sequentially connected from bottom to top, a spiral segment is arranged on the outer side of the drill rod and the extension rod, and the ends of the plurality of spiral segments are connected end to end to form a continuous spiral leaf, and a connecting assembly is arranged between the ends of the drill rod and the extension rod and between the ends of the extension rod and the driving rod:

[0009] An auxiliary installation and removal assembly is installed above the support unit, and the auxiliary installation and removal assembly is used for installing and removing the sampling rod assembly.

[0010] Preferably, the support unit comprises:

[0011] A base, wherein the base is provided with an excavation opening extending vertically;

[0012] The slide rail is embedded on the top of the base, a slide groove is provided on the top of the slide rail, a slider is slidably connected to the inner wall of the slide groove, and the auxiliary installation and disassembly component is fixedly installed on the top of the slider.

[0013] Preferably, the driving unit comprises:

[0014] A support column, wherein a first drive motor is fixedly installed on the outer side of the bottom end of the support column, a support frame is movably sleeved on the outer side of the support column, and the first drive motor is transmission-connected to the support frame, the support column is provided with a moving groove which passes through the front and back, a moving block which is fixedly connected to the support frame is slidably arranged on the inner wall of the moving groove, a threaded rod is threadedly connected on the inner wall of the moving block, the threaded rod is rotatably arranged on the inner wall of the moving groove, and the output end of the first drive motor is transmission-connected to the end of the threaded rod;

[0015] The second drive motor is fixedly mounted above the end of the support frame, a mounting plate is fixedly connected below the end of the support frame, the top end of the drive rod is rotatably connected to the mounting plate, and the output end of the second drive motor is connected to the end of the drive rod.

[0016] Preferably, the connection assembly comprises:

[0017] A clamping groove, which is provided at the ends of the drill rod and the extension rod, and a steering limit groove is provided on the inner wall of the clamping groove;

[0018] A clamping block is fixedly mounted on the ends of the extension rod and the driving rod, a steering limit block is provided at the end of the clamping block, and the clamping block and the steering limit block are respectively inserted into the corresponding clamping slot and the steering limit slot.

[0019] Preferably, the ends of the drill rod and the extension rod are both provided with a first positioning groove, a first positioning block is slidably provided on the inner wall of the first positioning groove, the end of the first positioning block extends to the outside, and the other end of the first positioning block is fixedly connected with a first extrusion block, a first positioning spring is movably sleeved on the outer side of the first extrusion block, and both ends of the first positioning spring are fixedly connected to the first positioning block and the inner wall of the first positioning groove, and a connecting limit groove is provided between the clamping groove and the first positioning groove.

[0020] Preferably, the ends of the extension rod and the driving rod are both provided with a second positioning groove, a second positioning block is slidably provided on the inner wall of the second positioning groove, a second positioning spring is fixedly connected between the end of the second positioning block and the inner wall of the second positioning groove, a second extrusion block is fixedly connected to the other end of the second positioning block, and the end of the second extrusion block passes through the limiting groove and abuts against the end of the first extrusion block.

[0021] Preferably, the auxiliary installation and removal assembly comprises:

[0022] A guide rail, wherein the guide rail is provided with a through guide groove, a guide bar is slidably connected to the inner wall of the guide groove, a first screw rod is rotatably arranged on the inner wall of the guide groove, and the first screw rod is threadedly connected to the guide bar;

[0023] The clamping mechanism is fixedly mounted on the end of the guide bar.

[0024] Preferably, the clamping mechanism comprises:

[0025] A connecting frame, wherein the connecting frame is fixedly connected to the end of the guide bar, and movable rails are installed at both ends of the connecting frame. A movable block is slidably arranged on the inner wall of the movable rail, and the end of the movable block extends outward and is fixedly connected to a U-shaped bar, and clamping blocks are fixedly installed at both ends of the U-shaped bar;

[0026] A transmission block, wherein the transmission block is fixedly installed at the end of the moving rail, a rotating rod is rotatably arranged between the two transmission blocks, a bidirectional screw rod is rotatably arranged inside the moving rail, the end of the bidirectional screw rod extends toward the inside of the transmission block, and both ends of the rotating rod and the end of the bidirectional screw rod are fixedly sleeved with bevel gears, and two adjacent bevel gears are meshed and connected, and two nut blocks are symmetrically threadedly connected to the outer side of the bidirectional screw rod, and the nut blocks are fixedly connected to the corresponding movable blocks.

[0027] Preferably, the clamping block comprises:

[0028] An arc block, wherein the arc block is fixedly connected to the end of the U-shaped bar, and an accommodating groove is provided on the inner circle surface of the arc block;

[0029] The rotating drum is rotatably arranged in the accommodating groove.

[0030] A sampling method of a soil sampling device for geological detection, the sampling method comprising the following steps:

[0031] Step 1: First, use the auxiliary installation and disassembly assembly to assist the installation of the drill rod, the extension rod and the drive rod, so that the ends of the multiple spiral segments outside the drill rod and the extension rod are connected end to end to form a continuous spiral leaf;

[0032] Step 2: Using the driving unit to drive the sampling rod assembly to rotate and move downward at the same time, until the bottom of the sampling rod assembly is screwed into the soil layer, thereby achieving soil drilling sampling;

[0033] Step 3: when sampling of a deeper soil layer is required, the connection assembly between the extension rod and the end of the driving rod is opened, and then a new extension rod is added and connected to the driving rod;

[0034] Step 4: Continue to turn on the drive unit to allow the new extension rod to be screwed into the soil layer, thereby achieving sampling of deeper soil with small-sized equipment.

[0035] The present invention discloses a soil sampling device for geological detection and a sampling method thereof, which have the following beneficial effects:

[0036] The soil sampling device for geological detection first uses an auxiliary installation and disassembly assembly to assist the installation of a drill rod, an extension rod and a driving rod, so that the ends of multiple spiral sections on the outside of the drill rod and the extension rod are connected end to end to form continuous spiral leaves; a driving unit is used to drive the sampling rod assembly to rotate and move downward at the same time, until the bottom of the sampling rod assembly is screwed into the soil layer, thereby realizing soil drilling and sampling; when it is necessary to sample a deeper soil layer, the connection assembly between the extension rod and the end of the driving rod is opened, and then a new extension rod is added and connected to the driving rod; the driving unit is continued to be turned on to make the new extension rod screwed into the soil layer, thereby realizing the sampling work of deeper soil of small-sized equipment.

[0037] The soil sampling device for geological detection uses a tool to move the second extrusion block toward the second positioning groove before the clamping block and the steering limit block are inserted into the clamping groove and the steering limit groove, and compresses the second positioning spring so that the end of the second extrusion block can pass through the limiting groove and abut against the end of the first extrusion block. At this time, under the action of the second extrusion block, the extension rod and the driving rod, the drill rod and the extension rod, and two adjacent extension rods are installed, so that the drill rod, the extension rod, and the driving rod form a whole to realize soil drilling sampling.

[0038] When the drill rod, the extension rod and the driving rod need to be disassembled, the soil sampling device for geological detection uses a tool to push the first positioning block toward the inner wall of the first positioning groove, which on the one hand compresses the first positioning spring and on the other hand can push the second extrusion block toward the second positioning groove, so that the clamping block and the steering limit block are separated from the clamping groove and the steering limit groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the structure of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the support unit of the present invention;

[0042] Figure 3 It is a schematic structural diagram of the driving unit and the sampling rod assembly of the present invention;

[0043] Figure 4 It is a partial structural schematic diagram of the driving unit and sampling rod assembly of the present invention;

[0044] Figure 5 It is a partial structural schematic diagram of the sampling rod assembly of the present invention;

[0045] Figure 6 It is a structural schematic diagram of a drill rod and an extension rod of the present invention;

[0046] Figure 7 For the present invention Figure 6 A part of the enlarged schematic diagram;

[0047] Figure 8 It is a structural schematic diagram of the auxiliary installation and removal assembly of the present invention;

[0048] Fig. 9 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0049] Fig.10 It is a partial structural schematic diagram of the clamping mechanism of the present invention;

[0050] Fig.11 It is a schematic structural diagram of the U-shaped bar and the clamping block of the present invention.

[0051] In the figure: 1, support unit; 11, base; 111, excavation port; 12, slide rail; 121, slide slot; 122, slide block; 2, drive unit; 21, support column; 22, first drive motor; 23, support frame; 24, mounting plate; 25, second drive motor; 3, sampling rod assembly; 31, drill rod; 32, extension rod; 33, drive rod; 34, spiral section; 4, auxiliary installation and disassembly assembly; 41, guide rail; 42, guide bar; 43, clamping mechanism; 431, connecting frame; 432, moving rail; 433, U-shaped bar; 434, clamping block; 434 1. Arc block; 4342. Accommodating groove; 4343. Rotating cylinder; 435. Transmission block; 436. Rotating rod; 437. Bevel gear; 438. Bidirectional screw; 439. Nut block; 5. Connecting assembly; 51. Slot; 52. Steering limit slot; 53. Slot; 54. Steering limit block; 55. First positioning slot; 551. First positioning block; 552. First positioning spring; 553. First extrusion block; 554. Slot; 56. Second positioning slot; 561. Second positioning block; 562. Second positioning spring; 563. Second extrusion block. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The embodiment of the present application provides a soil sampling device for geological detection and a sampling method thereof, thereby solving the problem that when sampling soil at a deeper depth by using an electric motor and a drill rod with spiral blades, the sampling depth is determined by the length of the drill rod. Although deeper soil sampling can be achieved by improving the specifications of the soil sampling device and its drill rod, in some more remote areas, large equipment is difficult to carry and transport, and therefore the specifications of the soil sampling device are limited, making it difficult to achieve deeper soil sampling in remote areas. First, the auxiliary installation and disassembly assembly 4 is used to assist in the installation of the drill rod 31, the extension rod 32 and the drive rod 33, so that the ends of the multiple spiral segments 34 on the outside of the drill rod 31 and the extension rod 32 are connected end to end to form a continuous spiral leaf; the driving unit 2 is used to drive the sampling rod assembly 3 to rotate and move downward at the same time until the bottom of the sampling rod assembly 3 is screwed into the soil layer, thereby realizing soil drilling and sampling; when it is necessary to sample deeper soil layers, the connecting assembly 5 between the ends of the extension rod 32 and the drive rod 33 is opened, and then a new extension rod 32 is added and connected to the drive rod 33; the driving unit 2 is continued to be opened so that the new extension rod 32 is screwed into the soil layer, thereby realizing the sampling of deeper soil for small-sized equipment.

[0054] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0055] The embodiment of the present invention discloses a soil sampling device for geological detection. Figure 1-11 As shown, it includes a support unit 1 and a drive unit 2, the drive unit 2 is installed above the support unit 1, and the drive unit 2 is drivingly connected to a sampling rod assembly 3;

[0056] The sampling rod assembly 3 includes a drill rod 31, an extension rod 32 and a driving rod 33. The drill rod 31, the extension rod 32 and the driving rod 33 are connected in sequence from bottom to top. The outer sides of the drill rod 31 and the extension rod 32 are provided with a spiral segment 34, and the ends of the plurality of spiral segments 34 are connected end to end to form a continuous spiral leaf. A connecting assembly 5 is provided between the ends of the drill rod 31 and the extension rod 32 and between the ends of the extension rod 32 and the driving rod 33:

[0057] An auxiliary installation and removal assembly 4 is installed above the support unit 1 , and the auxiliary installation and removal assembly 4 is used for installation and removal of the sampling rod assembly 3 .

[0058] First, the auxiliary installation and disassembly assembly 4 is used to assist in the installation of the drill rod 31, the extension rod 32 and the drive rod 33, so that the ends of the multiple spiral segments 34 on the outside of the drill rod 31 and the extension rod 32 are connected end to end to form a continuous spiral leaf; the driving unit 2 is used to drive the sampling rod assembly 3 to rotate and move downward at the same time until the bottom of the sampling rod assembly 3 is screwed into the soil layer, thereby realizing soil drilling and sampling; when it is necessary to sample deeper soil layers, the connecting assembly 5 between the ends of the extension rod 32 and the drive rod 33 is opened, and then a new extension rod 32 is added and connected to the drive rod 33; the driving unit 2 is continued to be opened so that the new extension rod 32 is screwed into the soil layer, thereby realizing the sampling of deeper soil for small-sized equipment.

[0059] The auxiliary installation and removal assembly 4 can clamp and move the new extension rod 32 in advance, thereby increasing the installation speed of the extension rod 32.

[0060] Furthermore, the support unit 1 comprises:

[0061] A base 11, wherein the base 11 is provided with an excavation opening 111 which passes through from top to bottom;

[0062] The slide rail 12 is embedded above the base 11 . A slide groove 121 is provided above the slide rail 12 . A slider 122 is slidably connected to the inner wall of the slide groove 121 . The auxiliary mounting assembly 4 is fixedly mounted on the top of the slider 122 .

[0063] By utilizing the provided earth-exiting opening 111 , the sampling rod assembly 3 can pass through the earth-exiting opening 111 and be screwed into the soil layer to perform soil drilling sampling. In the process of sampling, the soil is transferred upward through the earth-exiting opening 111 .

[0064] By setting the slide rail 12 and the slide groove 121, the slider 122 can move laterally, thereby driving the auxiliary installation and removal assembly 4 to move laterally, making it convenient for the auxiliary installation and removal assembly 4 to add a new extension rod 32 and move the new extension rod 32 to the installation position.

[0065] In particular, the drive unit 2 comprises:

[0066] A support column 21, a first drive motor 22 is fixedly installed on the outer side of the bottom end of the support column 21, a support frame 23 is movably sleeved on the outer side of the support column 21, and the first drive motor 22 is transmission-connected with the support frame 23, the support column 21 is provided with a moving groove that passes through the front and back, a moving block that is fixedly connected to the support frame 23 is slidably arranged on the inner wall of the moving groove, a threaded rod is threadedly connected on the inner wall of the moving block, the threaded rod is rotatably arranged on the inner wall of the moving groove, and the output end of the first drive motor 22 is transmission-connected with the end of the threaded rod;

[0067] The second drive motor 25 is fixedly mounted above the end of the support frame 23, and a mounting plate 24 is fixedly connected below the end of the support frame 23. The top end of the drive rod 33 is rotatably connected to the mounting plate 24, and the output end of the second drive motor 25 is connected to the end of the drive rod 33.

[0068] The bottom end of the threaded rod is connected to the output end of the first drive motor 22 through a gear, so that when the output end of the first drive motor 22 rotates, the threaded rod can be driven to rotate accordingly.

[0069] When the first drive motor 22 is working, the threaded rod can rotate, so that the moving block threadably connected to the threaded rod can move vertically on the inner wall of the moving groove, and then drive the support frame 23 and the second drive motor 25 to move accordingly, so that the sampling rod assembly 3 under the second drive motor 25 can move accordingly, and the second drive motor 25 can drive the sampling rod assembly 3 to rotate when working, so that the sampling rod assembly 3 can move vertically during the rotation process.

[0070] Particularly disclosed, the connection assembly 5 comprises:

[0071] A clamping groove 51, which is provided at the ends of the drill rod 31 and the extension rod 32, and a steering limit groove 52 is provided on the inner wall of the clamping groove 51;

[0072] The clamping block 53 is fixedly mounted on the ends of the extension rod 32 and the driving rod 33 . A steering limit block 54 is provided at the end of the clamping block 53 . The clamping block 53 and the steering limit block 54 are respectively inserted into the corresponding clamping slot 51 and the steering limit slot 52 .

[0073] When the clamping block 53 and the steering limit block 54 are respectively inserted into the corresponding clamping slot 51 and the steering limit slot 52, when the extension rod 32 and the driving rod 33 rotate, the drill rod 31 and other extension rods 32 can be driven to rotate.

[0074] It is particularly disclosed that the ends of the drill rod 31 and the extension rod 32 are both provided with a first positioning groove 55, and a first positioning block 551 is slidably arranged on the inner wall of the first positioning groove 55, the end of the first positioning block 551 extends to the outside, and the other end of the first positioning block 551 is fixedly connected with a first extrusion block 553, and the outer side of the first extrusion block 553 is movably sleeved with a first positioning spring 552, and the two ends of the first positioning spring 552 are fixedly connected to the first positioning block 551 and the inner wall of the first positioning groove 55, and a connecting limit groove 554 is provided between the card slot 51 and the first positioning groove 55.

[0075] Furthermore, the ends of the extension rod 32 and the driving rod 33 are both provided with a second positioning groove 56, and a second positioning block 561 is slidably provided on the inner wall of the second positioning groove 56, and a second positioning spring 562 is fixedly connected between the end of the second positioning block 561 and the inner wall of the second positioning groove 56, and the other end of the second positioning block 561 is fixedly connected to a second extrusion block 563, and the end of the second extrusion block 563 passes through the limiting groove 554 and abuts against the end of the first extrusion block 553.

[0076] Before the clamping block 53 and the steering limit block 54 are inserted into the clamping slot 51 and the steering limit slot 52, firstly, a tool is used to move the second extrusion block 563 toward the second positioning slot 56, and the second positioning spring 562 is compressed, so that the end of the second extrusion block 563 can pass through the limiting slot 554 and abut against the end of the first extrusion block 553. At this time, under the action of the second extrusion block 563, the extension rod 32 and the driving rod 33, the drill rod 31 and the extension rod 32, and the two adjacent extension rods 32 are installed, so that the drill rod 31, the extension rod 32 and the driving rod 33 form a whole to realize soil drilling and sampling.

[0077] When the drill rod 31, the extension rod 32 and the driving rod 33 need to be disassembled, the first positioning block 551 is pushed toward the inner wall of the first positioning groove 55 by a tool, which on the one hand compresses the first positioning spring 552, and on the other hand can push the second extrusion block 563 toward the second positioning groove 56, so that the clamping block 53 and the steering limit block 54 are separated from the clamping groove 51 and the steering limit groove 52;

[0078] At the same time, by providing the first positioning spring 552 and the first positioning block 551, the end of the first positioning block 551 is in the outside, which plays a sealing role and prevents external soil from entering the first positioning groove 55 and affecting the normal movement of the first positioning block 551 and the first extrusion block 553.

[0079] Furthermore, the auxiliary installation and removal assembly 4 includes:

[0080] A guide rail 41, wherein the guide rail 41 is provided with a through guide groove, a guide bar 42 is slidably connected to the inner wall of the guide groove, a first screw rod is rotatably provided on the inner wall of the guide groove, and the first screw rod is threadedly connected to the guide bar 42;

[0081] The clamping mechanism 43 is fixedly mounted on the end of the guide bar 42 .

[0082] During use, the first screw rod and the guide bar 42 are provided. When the first screw rod is rotated, the guide bar 42 can be driven to move vertically, and then the clamping mechanism 43 at the end of the guide bar 42 can be driven to move vertically. When the clamping mechanism 43 clamps the extension rod 32, it is convenient to move the position of the extension rod 32, thereby facilitating the installation of the extension rod 32. It is also convenient to clamp the drill rod 31 and the extension rod 32 during disassembly, thereby facilitating the disassembly of the drill rod 31 and the extension rod 32.

[0083] Particularly disclosed, the clamping mechanism 43 comprises:

[0084] A connecting frame 431, the connecting frame 431 is fixedly connected to the end of the guide bar 42, and movable rails 432 are installed at both ends of the connecting frame 431. A movable block is slidably provided on the inner wall of the movable rail 432, and the end of the movable block extends outward and is fixedly connected to a U-shaped bar 433, and clamping blocks 434 are fixedly installed at both ends of the U-shaped bar 433;

[0085] Transmission block 435, the transmission block 435 is fixedly installed on the end of the movable rail 432, a rotating rod 436 is rotatably arranged between the two transmission blocks 435, and a bidirectional screw rod 438 is rotatably arranged inside the movable rail 432, the end of the bidirectional screw rod 438 extends to the inside of the transmission block 435, and both ends of the rotating rod 436 and the end of the bidirectional screw rod 438 are fixedly sleeved with bevel gears 437, and two adjacent bevel gears 437 are meshed and connected, and the outer side of the bidirectional screw rod 438 is symmetrically threaded with two nut blocks 439, and the nut blocks 439 are fixedly connected to the corresponding movable blocks.

[0086] In the process of rotating the rotating rod 436, the bevel gears 437 at both ends of the rotating rod 436 can be driven to rotate, and then the upper and lower bidirectional screw rods 438 can be driven to rotate, so that the two nut blocks 439 on the outer side of the bidirectional screw rod 438 can move toward and away from each other, which is convenient for moving the position of the clamping block 434, and then the drill rod 31 and the extension rod 32 can be stably clamped.

[0087] It should be particularly emphasized that the clamp block 434 includes:

[0088] An arc block 4341, the arc block 4341 is fixedly connected to the end of the U-shaped bar 433, and an accommodating groove 4342 is formed on the inner ring surface of the arc block 4341;

[0089] The rotating cylinder 4343 is rotatably disposed in the accommodating groove 4342 .

[0090] By setting the rotating cylinder 4343, the rotating cylinder 4343 is rotatably set in the accommodating groove 4342. When the arc block 4341 is moved, the rotating cylinder 4343 of the inner circle of the arc block 4341 can be abutted against the outer sides of the drill rod 31 and the extension rod 32 to achieve the effect of clamping and fixing. At the same time, the drill rod 31 and the extension rod 32 can be rotated relative to the rotating cylinder 4343 of the inner circle of the arc block 4341, so as to adjust the horizontal angle of the drill rod 31 and the extension rod 32, which facilitates the insertion of the clamping block 53 and the steering limit block 54 into the clamping groove 51 and the steering limit groove 52.

[0091] A sampling method of a soil sampling device for geological detection, the sampling method comprising the following steps:

[0092] Step 1: First, use the auxiliary installation and disassembly assembly 4 to assist the installation of the drill rod 31, the extension rod 32 and the drive rod 33, so that the ends of the multiple spiral segments 34 outside the drill rod 31 and the extension rod 32 are connected end to end to form a continuous spiral leaf;

[0093] Step 2: Use the driving unit 2 to drive the sampling rod assembly 3 to rotate and move downward until the bottom of the sampling rod assembly 3 is screwed into the soil layer, thereby achieving soil drilling sampling;

[0094] Step 3: when sampling of a deeper soil layer is required, the connecting assembly 5 between the extension rod 32 and the end of the driving rod 33 is opened, and then a new extension rod 32 is added and connected to the driving rod 33;

[0095] Step 4: Continue to turn on the drive unit 2 so that the new extension rod 32 is screwed into the soil layer, thereby achieving the sampling work of deeper soil with small-sized equipment.

[0096] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil sampling device for geological detection, comprising a support unit (1) and a drive unit (2), wherein the drive unit (2) is installed above the support unit (1), characterized in that: The driving unit (2) is drivingly connected to a sampling rod assembly (3); The sampling rod assembly (3) comprises a drill rod (31), an extension rod (32) and a driving rod (33); the drill rod (31), the extension rod (32) and the driving rod (33) are connected in sequence from bottom to top; spiral segments (34) are arranged on the outside of the drill rod (31) and the extension rod (32); and the ends of the plurality of spiral segments (34) are connected end to end to form a continuous spiral leaf; and a connecting assembly (5) is arranged between the ends of the drill rod (31) and the extension rod (32) and between the ends of the extension rod (32) and the driving rod (33): An auxiliary installation and removal assembly (4) is installed above the support unit (1), and the auxiliary installation and removal assembly (4) is used for installing and removing the sampling rod assembly (3); The connection component (5) comprises: A clamping groove (51), the clamping groove (51) being formed at the ends of the drill rod (31) and the extension rod (32), and a steering limit groove (52) being formed on the inner wall of the clamping groove (51); A clamping block (53), the clamping block (53) being fixedly mounted on the ends of the extension rod (32) and the driving rod (33), the ends of the clamping block (53) being provided with a steering limit block (54), the clamping block (53) and the steering limit block (54) being respectively inserted into the corresponding clamping slot (51) and the steering limit slot (52); The ends of the drill rod (31) and the extension rod (32) are both provided with a first positioning groove (55); a first positioning block (551) is slidably provided on the inner wall of the first positioning groove (55); the end of the first positioning block (551) extends outward, and the other end of the first positioning block (551) is fixedly connected to a first extrusion block (553); a first positioning spring (552) is movably sleeved on the outer side of the first extrusion block (553); and both ends of the first positioning spring (552) are fixedly connected to the first positioning block (551) and the inner wall of the first positioning groove (55); and a communicating limiting groove (554) is provided between the clamping groove (51) and the first positioning groove (55); The ends of the extension rod (32) and the driving rod (33) are both provided with a second positioning groove (56); a second positioning block (561) is slidably arranged on the inner wall of the second positioning groove (56); a second positioning spring (562) is fixedly connected between the end of the second positioning block (561) and the inner wall of the second positioning groove (56); a second extrusion block (563) is fixedly connected to the other end of the second positioning block (561); and an end of the second extrusion block (563) passes through the limiting groove (554) and abuts against an end of the first extrusion block (553).

2. A soil sampling device for geological detection according to claim 1, characterized in that: The support unit (1) comprises: A base (11), wherein the base (11) is provided with an excavation opening (111) extending vertically; A slide rail (12) is embedded above the base (11), a slide groove (121) is provided above the slide rail (12), a slider (122) is slidably connected to the inner wall of the slide groove (121), and the auxiliary installation and disassembly component (4) is fixedly installed on the top of the slider (122).

3. A soil sampling device for geological detection according to claim 1, characterized in that: The driving unit (2) comprises: A support column (21), wherein a first drive motor (22) is fixedly mounted on the outer side of the bottom end of the support column (21), a support frame (23) is movably sleeved on the outer side of the support column (21), and the first drive motor (22) is transmission-connected to the support frame (23), the support column (21) is provided with a moving groove extending through the front and rear, a moving block is slidably arranged on the inner wall of the moving groove and is fixedly connected to the support frame (23), a threaded rod is threadedly connected on the inner wall of the moving block, the threaded rod is rotatably arranged on the inner wall of the moving groove, and the output end of the first drive motor (22) is transmission-connected to the end of the threaded rod; A second drive motor (25) is fixedly mounted above the end of the support frame (23); a mounting plate (24) is fixedly connected below the end of the support frame (23); a top end of the drive rod (33) is rotatably connected to the mounting plate (24); and an output end of the second drive motor (25) is connected to the end of the drive rod (33).

4. A soil sampling device for geological detection according to claim 1, characterized in that: The auxiliary installation and removal component (4) comprises: A guide rail (41), wherein the guide rail (41) is provided with a through guide groove, a guide bar (42) is slidably connected to the inner wall of the guide groove, a first screw rod is rotatably arranged on the inner wall of the guide groove, and the first screw rod is threadably connected to the guide bar (42); A clamping mechanism (43), wherein the clamping mechanism (43) is fixedly mounted on an end portion of the guide bar (42).

5. A soil sampling device for geological detection according to claim 4, characterized in that: The clamping mechanism (43) comprises: A connecting frame (431), the connecting frame (431) being fixedly connected to the end of the guide bar (42), movable rails (432) being installed at both ends of the connecting frame (431), a movable block being slidably arranged on the inner wall of the movable rail (432), and the end of the movable block extending outward and being fixedly connected to a U-shaped bar (433), and clamping blocks (434) being fixedly installed at both ends of the U-shaped bar (433); A transmission block (435) is fixedly mounted on the end of the moving rail (432); a rotating rod (436) is rotatably arranged between the two transmission blocks (435); a bidirectional screw rod (438) is rotatably arranged inside the moving rail (432); the end of the bidirectional screw rod (438) extends toward the inside of the transmission block (435); both ends of the rotating rod (436) and the end of the bidirectional screw rod (438) are fixedly sleeved with bevel gears (437); two adjacent bevel gears (437) are meshedly connected; two nut blocks (439) are symmetrically threadedly connected to the outer side of the bidirectional screw rod (438); and the nut blocks (439) are fixedly connected to the corresponding movable block.

6. A soil sampling device for geological detection according to claim 5, characterized in that: The clamping block (434) comprises: An arc-shaped block (4341), wherein the arc-shaped block (4341) is fixedly connected to the end of the U-shaped bar (433), and an accommodating groove (4342) is provided on the inner ring surface of the arc-shaped block (4341); The rotating cylinder (4343) is rotatably disposed in the accommodating groove (4342).

7. A sampling method for a soil sampling device for geological detection according to any one of claims 1 to 6, characterized in that: The sampling method comprises the following steps: Step 1: First, the auxiliary installation and disassembly assembly (4) is used to assist the installation of the drill rod (31), the extension rod (32) and the driving rod (33), so that the ends of the plurality of spiral segments (34) outside the drill rod (31) and the extension rod (32) are connected end to end to form a continuous spiral leaf; Step 2: using the driving unit (2) to drive the sampling rod assembly (3) to rotate and move downward at the same time, until the bottom of the sampling rod assembly (3) is screwed into the soil layer, thereby achieving soil drilling sampling; Step 3, when sampling of a deeper soil layer is required, the connecting assembly (5) between the extension rod (32) and the end of the driving rod (33) is opened, and then a new extension rod (32) is added and connected to the driving rod (33); Step 4: Continue to turn on the drive unit (2) so that the new extension rod (32) is screwed into the soil layer, thereby achieving the sampling work of deeper soil with a small-sized device.

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