A deep soil drilling device for geotechnical engineering investigation

Abstract

The utility model belongs to geotechnical engineering investigation device technical field, concretely is a kind of geotechnical engineering investigation deep soil drilling device, including locating seat;The first drill rod is installed in the middle part of locating seat;The first drill rod bottom end is connected with connecting rod by screw thread;The second drill rod is connected with connecting rod bottom end by screw thread;The second drill rod bottom is equipped with soil drill bit;The locating seat top is equipped with moving assembly;The locating seat bottom is equipped with supporting assembly;The first drill rod top end is equipped with gripping assembly;Through the above structure, moving assembly drives soil drill bit to insert soil sampling and the setting of soil drill bit from soil pull out, composition deep soil drilling structure, realize the function of driving soil drill bit to insert soil sampling and pull out, solve the problem that soil drill bit needs to be manually pulled out from soil when deep soil sampling, improve the convenience when deep soil sampling, simplify the operation step when soil drill bit sampling.

Description

Technical Field

[0001] This utility model belongs to the technical field of geotechnical engineering exploration equipment, specifically a deep soil drilling device for geotechnical engineering exploration. Background Technology

[0002] Geotechnical engineering is the study of the utilization, modification and processing of rock and soil masses in engineering construction, and it solves engineering problems related to rock and soil media based on mechanics and geology.

[0003] In geotechnical engineering, site investigation is required, and soil sampling is necessary during the investigation. In the existing soil drilling technology, drilling rigs and other tools are first used to drill holes in the area to be sampled. After drilling to a suitable depth, a soil sampling drill is used to take samples. When sampling, the soil sampling drill needs to be manually inserted into the soil to be sampled. After the drill bit is filled with soil, the soil sampling drill is pulled out. The operation steps are quite cumbersome.

[0004] Therefore, this utility model provides a deep soil drilling device for geotechnical engineering exploration. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A deep soil drilling device for geotechnical engineering exploration, comprising a positioning seat; a first drill rod installed in the middle of the positioning seat; a connecting rod threadedly connected to the bottom end of the first drill rod; a second drill rod threadedly connected to the bottom end of the connecting rod; a soil sampling drill bit installed at the bottom of the second drill rod; a moving component provided at the top of the positioning seat; a supporting component provided at the bottom of the positioning seat; a gripping component provided at the top of the first drill rod; and a pushing component provided inside the second drill rod. Through the above structure, the moving component drives the soil sampling drill bit to insert into the soil for sampling and pulls the soil sampling drill bit out of the soil, forming a deep soil drilling structure. This achieves the function of driving the soil sampling drill bit to insert into the soil for sampling and pulling it out, solving the problem of manually pulling the soil sampling drill bit out of the soil during deep soil sampling, improving the convenience of deep soil sampling, and simplifying the operation steps of soil sampling.

[0007] Preferably, the moving component includes a fixed frame, an electric actuator, a slider, a plug rod, and a slot; the fixed frame is fixedly connected to the top of the positioning seat; a pair of fixed frames are provided on the top of the positioning seat and are symmetrically arranged; the electric actuator is installed on the top of the fixed frame; the slider is slidably connected to the inner sidewall of the fixed frame;

[0008] The top of the slider is fixedly connected to the transmission end of the electric actuator; the insertion rod is slidably connected to the middle of the slider; the slot is opened in the middle of the first drill rod; the slot passes through the middle of the first drill rod; the end of the insertion rod away from the first drill rod is provided with a push-pull assembly; through the above structure, the electric actuator drives the first drill rod and the soil sampling drill bit to move up and down to remove the soil in the borehole, forming a soil sampling drill bit lifting and moving structure, realizing the function of driving the soil sampling drill bit to insert into the soil and pull it out, solving the problem of needing to manually press the soil sampling drill bit when inserting it into the soil, improving the convenience of soil sampling drill bit sampling, simplifying the operation steps of soil sampling drill bit sampling, and improving the convenience of soil sampling drill bit lifting and moving.

[0009] Preferably, the ejection assembly includes a bulldozer rod, a bulldozer disc, and a pusher block; the bulldozer rod is slidably connected to the middle of the second drill rod; the bulldozer rod passes through the middle of the soil sampling drill bit; the bulldozer disc is fixedly connected to the bottom end of the bulldozer rod; the pusher block is detachably installed on the outer side wall of the bulldozer rod away from the bulldozer disc; the top of the pusher block is provided with an anti-slip component; through the above structure, the setting of pushing the pusher block to drive the bulldozer rod and the bulldozer disc to push out the soil in the soil sampling drill bit forms a soil ejection structure, realizing the function of pushing out the soil in the soil sampling drill bit, solving the problem that the soil is stuck inside the soil sampling drill bit after sampling and is inconvenient to remove, and improving the convenience of removing the soil from the soil sampling drill bit.

[0010] Preferably, the support assembly includes legs, foot plates, and ground spikes; the legs are detachably mounted on the bottom of the positioning seat; multiple sets of legs are provided on the bottom of the positioning seat and are evenly distributed at the four corners of the bottom of the positioning seat; the foot plates are fixedly connected to the bottom of the legs; the ground spikes are fixedly connected to the bottom of the foot plates; through the above structure, the legs and foot plates support the positioning seat, forming a positioning seat support structure, realizing the function of supporting the positioning seat, improving the stability of the positioning seat when placed, reducing the tilting of the positioning seat, and improving the stability of the device during use.

[0011] Preferably, the gripping assembly includes a push handle and a rubber sleeve; the push handle is fixedly connected to the top end of the first drill rod; the rubber sleeve is fitted onto the end of the push handle; a pair of rubber sleeves are provided at the end of the push handle, and are symmetrically arranged.

[0012] The above structure, which allows for holding the push handle and rotating the soil sampling drill bit, forms the end grip structure of the first drill rod, realizing the function of pulling or rotating the first drill rod and the soil sampling drill bit, and improving the convenience of rotating and pulling the soil sampling drill bit.

[0013] Preferably, the push-pull assembly includes a handle and a sponge pad; the handle is fixedly connected to the end of the insertion rod away from the first drill rod; the sponge pad is installed on the inner side wall of the handle; through the above structure, the setting of holding the handle to drive the insertion rod to slide in the middle of the slider forms an insertion rod push-pull structure, realizing the function of driving the insertion rod to move, improving the convenience of inserting or disengaging the insertion rod from the slot, and increasing the comfort of holding the handle.

[0014] Preferably, the anti-slip component includes a silicone strip; the silicone strip is fixedly connected to the top of the push block;

[0015] Multiple sets of silicone strips are set on the top of the push block and are evenly distributed on the top of the push block; when the foot steps on the push block to push out the soil in the soil-taking drill bit, the silicone strips increase the friction on the surface of the push block and reduce the slippage when pushing the push block.

[0016] The beneficial effects of this utility model are as follows: 1. The deep soil drilling device for geotechnical engineering exploration described in this utility model, through the setting of moving components to drive the soil sampling drill bit to insert into the soil for sampling and to pull the soil sampling drill bit out of the soil, forms a deep soil drilling structure, realizing the function of driving the soil sampling drill bit to insert into the soil for sampling and to pull it out, solving the problem of manually pulling the soil sampling drill bit out of the soil when sampling deep soil, improving the convenience of deep soil sampling, and simplifying the operation steps of soil sampling drill bit sampling.

[0017] 2. The deep soil drilling device for geotechnical engineering exploration described in this utility model is configured to remove soil from the borehole by moving the first drill rod and the soil sampling drill bit up and down through an electric actuator. This forms a soil sampling drill bit lifting and moving structure, which realizes the function of inserting and pulling out the soil sampling drill bit. It solves the problem of manually pressing the soil sampling drill bit when it is inserted into the soil, improves the convenience of soil sampling, simplifies the operation steps of soil sampling, and improves the convenience of lifting and moving the soil sampling drill bit. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a perspective view of this utility model;

[0020] Figure 2 is a schematic diagram of the structure of the first drill rod and the insertion rod in this utility model;

[0021] Figure 3 is a schematic diagram of the structure of the insertion rod and the handle in this utility model;

[0022] Figure 4 is a schematic diagram of the structure of the bulldozer disc and the soil sampling drill bit in this utility model.

[0023] Figure 5 is a schematic diagram of the structure of the push handle and drill rod in this utility model.

[0024] In the diagram: 1. Positioning seat; 11. First drill rod; 12. Connecting rod; 13. Second drill rod; 14. Soil sampling drill bit; 15. Fixing frame; 16. Electric actuator; 17. Slider; 18. Insert rod; 19. Slot; 2. Bulldozer rod; 21. Bulldozer disc; 22. Push block; 3. Support leg; 31. Foot plate; 32. Ground stake; 4. Push handle;

[0025] 41. Rubber sleeve; 5. Handle; 51. Sponge pad; 6. Silicone strip. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] As shown in Figures 1 to 5, a deep soil drilling device for geotechnical engineering exploration according to an embodiment of the present invention includes a positioning base 1; a first drill rod 11 is installed in the middle of the positioning base 1; a connecting rod 12 is threaded to the bottom end of the first drill rod 11; a second drill rod 13 is threaded to the bottom end of the connecting rod 12; a soil sampling drill bit 14 is installed at the bottom of the second drill rod 13; a moving component is provided at the top of the positioning base 1; a supporting component is provided at the bottom of the positioning base 1; a gripping component is provided at the top of the first drill rod 11; and a pushing component is provided inside the second drill rod 13.

[0028] During deep soil drilling, after drilling a hole in the ground, the second drill rod 13 is passed through the bottom of the positioning seat 1, and the positioning seat 1 is placed on the borehole, with the borehole aligned with the center of the positioning seat 1. The support assembly supports the positioning seat 1, and a connecting rod 12 of appropriate size is installed at the top of the second drill rod 13. The top of the connecting rod 12 is installed at the bottom of the first drill rod 11. The soil sampling drill bit 14 is placed at the bottom of the borehole using the grip assembly, and a counterweight is installed at the bottom of the support assembly. The moving assembly is then activated, causing the first drill rod 11, connecting rod 12, second drill rod 13, and soil sampling drill bit 14 to move downwards, inserting the soil sampling drill bit 14 into the soil. After the soil fills the soil sampling drill bit 14, the moving assembly moves the soil sampling drill bit 14 upwards, pulling it out of the soil. The soil sampling drill bit 14 is then pulled out of the ground using the grip assembly.

[0029] The soil inside the soil sampling drill bit 14 is pushed out using the ejection component to complete the sampling. Through the above structure, the moving component drives the soil sampling drill bit 14 to insert into the soil for sampling and pulls the soil sampling drill bit 14 out of the soil, forming a deep soil drilling structure. This realizes the function of driving the soil sampling drill bit 14 to insert into the soil for sampling and pulling it out, solving the problem of manually pulling the soil sampling drill bit 14 out of the soil when sampling deep soil, improving the convenience of deep soil sampling, and simplifying the operation steps of the soil sampling drill bit 14.

[0030] As shown in Figures 1, 2, 3 and 5, the moving assembly includes a fixed frame 15, an electric actuator 16, a slider 17, an insert rod 18 and a slot 19; the fixed frame 15 is fixedly connected to the top of the positioning seat 1; a pair of fixed frames 15 are provided on the top of the positioning seat 1 and are arranged symmetrically; the electric actuator 16 is installed on the top of the fixed frame 15.

[0031] The slider 17 is slidably connected to the inner wall of the fixed frame 15; the top of the slider 17 is fixedly connected to the transmission end of the electric actuator 16; the insertion rod 18 is slidably connected to the middle of the slider 17; the slot 19 is opened in the middle of the first drill rod 11;

[0032] The slot 19 passes through the middle of the first drill rod 11; the end of the insertion rod 18 away from the first drill rod 11 is provided with a push-pull assembly; during operation, the first drill rod 11, connecting rod 12, second drill rod 13, and soil sampling drill bit 14 are inserted into the borehole. The electric actuator 16 is activated, which drives the slider 17 and the insertion rod 18, aligning the insertion rod 18 with the slot 19. The insertion rod 18 is inserted into the slot 19 through the push-pull assembly. The electric actuator 16 drives the slider 17, the insertion rod 18, and the first drill rod 11 downwards, inserting the soil sampling drill bit 14 into the soil, filling the soil sampling drill bit 14 with soil. When the electric actuator 16 returns to its original position, it drives the soil sampling drill bit 14 out of the soil, pulling the insertion rod 18 out of the slot 19. The first drill rod 11, connecting rod 12, and second drill rod 13 are then pulled out through the gripping assembly. The soil sampling drill bit 14 is pulled out of the borehole. Through the above structure, the electric actuator 16 drives the first drill rod 11 and the soil sampling drill bit 14 to move up and down to remove the soil from the borehole. This forms a lifting and moving structure for the soil sampling drill bit 14, which realizes the function of driving the soil sampling drill bit 14 to insert into the soil and pull it out. This solves the problem that the soil sampling drill bit 14 needs to be manually pressed when inserted into the soil, improves the convenience of sampling with the soil sampling drill bit 14, simplifies the operation steps of sampling with the soil sampling drill bit 14, and improves the convenience of lifting and moving the soil sampling drill bit 14.

[0033] As shown in Figures 4 and 5, the launching assembly includes a bulldozer rod 2, a bulldozer disc 21, and a pusher block 22; the bulldozer rod 2 is slidably connected to the middle of the second drill rod 13; the bulldozer rod 2 passes through the middle of the soil sampling drill bit 14; the bulldozer disc 21 is fixedly connected to the bottom end of the bulldozer rod 2; the pusher block 22 is detachably installed on the bulldozer rod 2 away from the bulldozer disc 21.

[0034] The outer wall of the soil sampling drill bit 14 is provided with an anti-slip component on the top of the push block 22. During operation, after the soil sampling drill bit 14 is pulled out of the borehole, the first drill rod 11, the connecting rod 12, and the second drill rod 13 are separated. The push block 22 is installed on the outer wall of the bulldozer rod 2. Pushing the push block 22 causes the bulldozer rod 2 to slide in the middle of the second drill rod 13. The bulldozer rod 2 causes the bulldozer disc 21 to move closer to the soil sampling drill bit 14. The bulldozer disc 21 pushes the soil out of the soil sampling drill bit 14. After pushing out, the push block 22 is pulled to reset the bulldozer rod 2 and the bulldozer disc 21. Through the above structure, the setting of pushing the push block 22 to push out the soil in the soil sampling drill bit 14, which is a soil pushing structure, realizes the function of pushing out the soil in the soil sampling drill bit 14, and solves the problem of soil getting stuck in the soil sampling drill bit 14 after sampling. To address the issue of inconvenience in removing soil from the interior, this method improves the ease of removing soil from the soil-removing drill bit 14.

[0035] As shown in Figure 2, the support assembly includes legs 3, foot plates 31, and ground spikes 32. Legs 3 are detachably mounted on the bottom of the positioning seat 1. Multiple sets of legs 3 are evenly distributed at the four corners of the bottom of the positioning seat 1. The foot plates 31 are fixedly connected to the bottom of the legs 3. The ground spikes 32 are fixedly connected to the bottom of the foot plates 31. During operation, after the positioning seat 1 is placed above the drill hole, the foot plates 31 contact the ground, and the ground spikes 32 are inserted into the ground. The positioning seat 1 is then removed from the top of the legs 3, a counterweight is installed in the middle of the legs 3, and the positioning seat 1 is then installed on top of the multiple sets of legs 3. The legs 3 support the positioning seat 1, and the foot plates 31 increase the contact area between the legs 3 and the ground. Through this structure, the legs 3 and foot plates 31 support the positioning seat 1, forming a support structure that supports the positioning seat 1, improving its stability during placement, reducing tilting, and enhancing the stability of the device during use.

[0036] As shown in Figure 1, the grip assembly includes a push handle 4 and a rubber sleeve 41. The push handle 4 is fixedly connected to the top of the first drill rod 11. The rubber sleeve 41 is fitted onto the end of the push handle 4. A pair of rubber sleeves 41 are provided at the end of the push handle 4 and are arranged symmetrically. During operation, after the soil sampling drill bit 14 is inserted into the soil, the insertion rod 18 is removed from the slot 19. The push handle 4 is gripped and rotated. The push handle 4 drives the soil sampling drill bit 14 to rotate, causing the soil inside the soil sampling drill bit 14 to break and separate from the soil inside the borehole, facilitating sampling by the soil sampling drill bit 14. When gripping the push handle 4, the rubber sleeve 41 contacts the hand, increasing the friction between the hand and the push handle 4. Through the above structure, the grip...

[0037] The arrangement of the 4-axis rotating soil sampling drill bit 14 forms the end grip structure of the first drill rod 11, realizing the function of pulling or rotating the first drill rod 11 and the soil sampling drill bit 14, and improving the convenience of rotating and pulling the soil sampling drill bit 14.

[0038] As shown in Figure 3, the push-pull assembly includes a handle 5 and a sponge pad 51; the handle 5 is fixedly connected to the end of the insertion rod 18 away from the first drill rod 11; the sponge pad 51 is installed on the inner side wall of the handle 5; during operation, when the handle 5 is held, the hand contacts the sponge pad 51, and pushing or pulling the handle 5 causes the insertion rod 18 to be inserted into or disengaged from the slot 19.

[0039] With the above structure, the handle 5 drives the insertion rod 18 to slide in the middle of the slider 17, forming a push-pull structure for the insertion rod 18. This realizes the function of moving the insertion rod 18, improves the convenience of inserting or disengaging the insertion rod 18 into the slot 19, and increases the comfort of holding the handle 5.

[0040] As shown in Figure 4, the anti-slip component includes a silicone strip 6; the silicone strip 6 is fixedly connected to the top of the push block 22;

[0041] Multiple sets of silicone strips 6 are set on the top of the push block 22 and are evenly distributed on the top of the push block 22. During operation, when the soil in the soil-taking drill bit 14 is pushed out by stepping on the push block 22, the silicone strips 6 increase the friction on the surface of the push block 22 and reduce the slippage when pushing the push block 22.

[0042] During operation, when drilling deep soil, after drilling a hole in the ground with a drilling rig, the second drill rod 13 is passed through the bottom of the positioning seat 1, and the positioning seat 1 is placed on the borehole, with the borehole aligned with the center of the positioning seat 1. The support assembly supports the positioning seat 1, and a connecting rod 12 of appropriate size is installed at the top of the second drill rod 13, with the top of the connecting rod 12 installed at the bottom of the first drill rod 11. The soil sampling drill bit 14 is placed at the bottom of the borehole using the grip assembly, and a counterweight is installed at the bottom of the support assembly. The moving assembly is then activated, causing the first drill rod 11, connecting rod 12, second drill rod 13, and soil sampling drill bit 14 to move downwards, inserting the soil sampling drill bit 14 into the soil. After the soil fills the soil sampling drill bit 14, the moving assembly moves the soil sampling drill bit 14 upwards, pulling the soil sampling drill bit 14 out of the soil. The soil sampling drill bit 14 is then pulled out of the soil using the grip assembly. The soil is extracted from the ground and pushed out using the ejection assembly to complete the sampling. The first drill rod 11, connecting rod 12, second drill rod 13, and soil sampling drill bit 14 are inserted into the borehole. The electric actuator 16 is activated, which drives the slider 17 and the insertion rod 18, aligning the insertion rod 18 with the slot 19. The insertion rod 18 is then inserted into the slot 19 using the push-pull assembly. The electric actuator 16 then moves the slider 17, insertion rod 18, and first drill rod 11 downwards, thus extracting the soil sample.

[0043] When the soil drill bit 14 is inserted into the soil, filling its interior with soil, and the electric push rod 16 is reset, it causes the soil drill bit 14 to detach from the soil, and the insertion rod 18 is pulled out of the slot 19. The first drill rod 11, the connecting rod 12, the second drill rod 13, and the soil drill bit 14 are then pulled out of the borehole using the gripping assembly. After the soil drill bit 14 is pulled out of the borehole, the first drill rod 11, the connecting rod 12, and the second drill rod 13 are separated. The push block 22 is installed on the outer wall of the bulldozer rod 2, and the push block 22 is pushed. The push block 22 causes the bulldozer rod 2 to slide in the middle of the second drill rod 13. The bulldozer rod 2 causes the bulldozer disc 21 to move closer to the soil drill bit 14, and the bulldozer disc 21 pushes out the soil inside the soil drill bit 14. After pushing out, the push block 22 is pulled to reset the bulldozer rod 2 and the bulldozer disc 21.

[0044] After the positioning seat 1 is placed above the borehole, the foot plate 31 contacts the ground, and the ground nail 32 is inserted into the ground. The positioning seat 1 is removed from the top of the support leg 3, the counterweight is installed in the middle of the support leg 3, and then the positioning seat 1 is installed on top of multiple sets of support legs 3. The support legs 3 support the positioning seat 1, and the foot plate 31 increases the contact area between the support leg 3 and the ground. After the soil sampling drill bit 14 is inserted into the soil, the insertion rod 18 is removed from the slot 19. The push handle 4 is held and rotated. The push handle 4 drives the soil sampling drill bit 14 to rotate, causing the soil inside the soil sampling drill bit 14 to break and separate from the soil in the borehole, making it easier for the soil sampling drill bit 14 to take samples. When holding the push handle 4, the rubber sleeve 41 contacts the hand, increasing the friction between the hand and the push handle 4. When holding the handle 5, the hand contacts the sponge pad 51. Pushing and pulling the handle 5 drives the insertion rod 18 to insert or dislodge from the slot 19. The foot push block 22 pushes the soil sampling drill bit 14. When the soil inside is pushed out, the silicone strip 6 increases the friction on the surface of the push block 22, reducing slippage when pushing the push block 22.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A deep soil drilling device for geotechnical engineering investigation, comprising a positioning base (1); characterized in that: A first drill rod (11) is installed in the middle of the positioning seat (1); a connecting rod (12) is threaded to the bottom end of the first drill rod (11); a second drill rod (13) is threaded to the bottom end of the connecting rod (12). The second drill rod (13) is equipped with a soil sampling drill bit (14) at the bottom; the positioning seat (1) is provided with a moving component at the top; the positioning seat (1) is provided with a supporting component at the bottom; the first drill rod (11) is provided with a gripping component at the top; and the second drill rod (13) is provided with an ejection component inside.

2. The deep soil drilling device for geotechnical engineering investigation according to claim 1, characterized in that: The moving assembly includes a fixed frame (15), an electric actuator (16), a slider (17), a plug (18), and a slot (19); the fixed frame (15) is fixedly connected to the top of the positioning seat (1); a pair of fixed frames (15) are provided on the top of the positioning seat (1) and are arranged symmetrically; the electric actuator (16) is installed on the top of the fixed frame (15); the slider (17) is slidably connected to the inner wall of the fixed frame (15); The top of the slider (17) is fixedly connected to the transmission end of the electric push rod (16); the insert rod (18) is slidably connected to the middle of the slider (17); the slot (19) is opened in the middle of the first drill rod (11); the slot (19) passes through the middle of the first drill rod (11); the end of the insert rod (18) away from the first drill rod (11) is provided with a push-pull assembly.

3. The deep soil drilling device for geotechnical engineering investigation according to claim 1, characterized in that: The pushing assembly includes a bulldozer rod (2), a bulldozer disc (21), and a pusher block (22); the bulldozer rod (2) is slidably connected to the middle of the second drill rod (13); the bulldozer rod (2) passes through the middle of the soil sampling drill bit (14); the bulldozer disc (21) is fixedly connected to the bottom end of the bulldozer rod (2); the pusher block (22) is detachably installed on the outer side wall of the bulldozer rod (2) away from the bulldozer disc (21); the top of the pusher block (22) is provided with an anti-slip component.

4. The deep soil drilling device for geotechnical engineering investigation according to claim 1, characterized in that: The support assembly includes legs (3), foot plates (31), and ground stakes (32); the legs (3) are detachably mounted on the bottom of the positioning seat (1); multiple sets of legs (3) are provided on the bottom of the positioning seat (1), and are evenly distributed at the four corners of the bottom of the positioning seat (1); the foot plates (31) are fixedly connected to... The bottom of the outrigger (3); the ground nail (32) is fixedly connected to the bottom of the foot plate (31).

5. A deep soil drilling device for geotechnical engineering investigation according to claim 1, characterized in that: The grip assembly includes a push handle (4) and a rubber sleeve (41); the push handle (4) is fixedly connected to the top of the first drill rod (11); the rubber sleeve (41) is fitted onto the end of the push handle (4); a pair of rubber sleeves (41) are provided at the end of the push handle (4) and are arranged symmetrically.

6. A deep soil drilling device for geotechnical engineering investigation according to claim 2, characterized in that: The push-pull assembly includes a handle (5) and a sponge pad (51); the handle (5) is fixedly connected to the end of the insertion rod (18) away from the first drill rod (11); the sponge pad (51) is installed on the inner side wall of the handle (5).

7. A deep soil drilling device for geotechnical engineering investigation according to claim 3, characterized in that: The anti-slip component includes a silicone strip (6); the silicone strip (6) is fixedly connected to the top of the push block (22); multiple sets of the silicone strip (6) are provided on the top of the push block (22) and are evenly distributed on the top of the push block (22).

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