Deep soil sampling device

Abstract

The invention relates to the technical field of soil sampling, and discloses a deep soil sampling device which comprises two first supporting plates and a second supporting plate, the two first supporting plates are fixedly connected through a connecting plate, and the second supporting plate is rotationally connected with the adjacent first supporting plate through a telescopic rod; and each first connecting rod penetrates through the adjacent arc-shaped hole and then is fixedly connected with the connecting plate. In the sinking process of the device, a first electrode makes contact with a second electrode, a second motor works, a first supporting plate is driven to rotate through cooperation of a third gear and a fourth gear, when a first connecting rod rotates to the edge of a hole along an arc-shaped hole, a connecting disc is driven to rotate, and under cooperation of an annular inclined groove, the first supporting plate is driven to rotate; the connecting disc moves upwards in the rotating process, so that the second supporting plate is driven to synchronously rotate and ascend, the supporting position is changed, and the situation that the device continuously sinks and the sampling result is affected due to the fact that the devices are always located at the same position is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling, and particularly to a deep soil sampling device. Background Art

[0002] Soil sampling refers to the method of collecting soil samples, including the layout of sampling and sampling techniques; the collection of soil samples is the basic work in the fields of soil analysis and research, geological exploration, etc. By analyzing and researching soil samples, the actual situation of the soil can be understood. In the civil engineering or agricultural fields, it is often necessary to investigate the local soil quality to make correct treatment of the area.

[0003] For example, a deep soil sampling device with the publication number CN215065410U includes a sampling bucket, articulated rods, fixed seats, positioning rings and a sampling part. One end of each of the two articulated rods is articulated on the positioning ring, and the other ends of the two articulated rods are respectively articulated with two fixed seats. The sampling bucket is slidably connected to the positioning ring, and the sampling part is slidably connected inside the sampling bucket. Circular plate is provided on both fixed seats. A deep soil sampling device further includes a soil inlet, and a soil inlet is provided at the lower end of the sampling bucket. A deep soil sampling device further includes a camera placement groove, and a camera placement groove is provided on the camera placement plate. This device provides a deep soil sampling device, and its beneficial effect is that it can facilitate soil sampling on an inclined ground.

[0004] However, the problems of the above patent are as follows: During the process of sampling deep soil, if the sampling location is wetland soil, the water content of the wetland soil is relatively large, resulting in its ground surface being relatively loose. When the sampling personnel sample the wetland soil, the soil sampling device will, under its own gravity and the lack of sufficient support on the surface of the wetland soil, cause the device to sink too deep, making it difficult for the sampling personnel to change the sinking depth, thus affecting the sampling effect.

[0005] Therefore, we propose a deep soil sampling device to facilitate the solution of the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a deep soil sampling device to solve the problems raised in the above background art, that is, when sampling wetland soil, there is a lack of sufficient support on its surface, and under the gravity of the device, the device will sink too deep, making it difficult to change the sinking depth.

[0007] To achieve the above object, the present invention provides the following technical solution: A deep soil sampling device, including two first support plates, a second support plate and a first bearing plate. The two first support plates are fixedly connected by a connecting plate. The second support plate is rotatably connected to the adjacent first support plate by a telescopic rod. A scale is fixedly connected to the top end of each telescopic rod. First electrodes are symmetrically and fixedly connected to the side wall of the scale. A floating plate is slidably connected through the side wall of the scale. Second electrodes are symmetrically and fixedly connected to the top end of the floating plate. An adjustment assembly is installed on the top end of the first bearing plate. The adjustment assembly includes a second motor. The output end of the second motor is fixedly connected to a second rotating shaft. A third gear is fixedly connected to the side wall of the second rotating shaft. A threaded sleeve is fixedly connected through the side wall of the first bearing plate, and a mounting sleeve is rotatably connected to the bottom wall. An annular inclined groove is provided on the side wall of the threaded sleeve. A connecting plate is slidably connected through the side wall of the mounting sleeve. Arc-shaped holes are symmetrically provided on the connecting plate. The connecting plate is slidably connected to the inner wall of the annular inclined groove. Second connecting rods are symmetrically and fixedly connected to the bottom end of the connecting plate. Each second connecting rod penetrates into the second support plate. A fourth gear is fixedly connected to the side wall of the mounting sleeve. A fixing plate is fixedly connected to the bottom end of the fourth gear. First connecting rods are symmetrically and fixedly connected to the bottom end of the fixing plate. Each first connecting rod is fixedly connected to the connecting plate after passing through the adjacent arc-shaped hole.

[0008] Preferably, the first support plate and the second support plate are arranged in a cross shape. The floating plate is in a bowl-shaped structure. The first electrode and the second electrode are both electrically connected to the second motor. The second motor is fixedly connected to the top end of the first bearing plate. The mounting sleeve is sleeved on the outer wall of the threaded sleeve. The third gear and the fourth gear are meshed and connected. The second rotating shaft is rotatably connected through the first bearing plate. Scale lines are symmetrically provided on the side wall of the scale.

[0009] Preferably, a threaded rod is threadedly connected inside the threaded sleeve. A circular groove is provided inside the threaded rod. A plurality of legs are symmetrically and rotatably connected to the bottom end of the first bearing plate. A fixed socket is fixedly connected to the side wall of one end of each leg. A plurality of limiting rods are symmetrically and fixedly connected to the top end of the first bearing plate. A second bearing plate is slidably connected by the plurality of limiting rods.

[0010] Preferably, the threaded rod is rotatably connected to the bottom end of the second bearing plate. A fixed sleeve is fixedly connected to the side wall of the threaded rod close to the second bearing plate. A second gear is fixedly connected to the side wall of the fixed sleeve. A first motor is fixedly connected to the top end of the second bearing plate. The output end of the first motor is fixedly connected to a first rotating shaft. The first rotating shaft penetrates through the second bearing plate and a first gear is fixedly connected to the rear side wall. The first gear and the second gear are meshed and connected.

[0011] Preferably, cavities are symmetrically formed in the inner wall of the second support plate, through holes are symmetrically formed in the inner side wall of each cavity, a support assembly is installed inside each cavity, the support assembly includes a pressing plate, the pressing plate is slidably connected to the inner wall of the cavity, and the pressing plate is fixedly connected to the second connecting rod.

[0012] Preferably, a first spring is fixedly connected between the pressing plate and the inner top wall of the cavity, the first spring is sleeved on the side wall of the second connecting rod, an air bag is fixedly connected to the inner bottom wall of the cavity, and push plates are symmetrically fixedly connected to the side wall of the air bag.

[0013] Preferably, a third support plate is slidably connected inside each through hole, the third support plate is fixedly connected to the adjacent push plate, rectangular holes are formed in the side wall of each third support plate, and the telescopic rod penetrates through the rectangular holes.

[0014] Preferably, a sampling assembly is fixedly installed at one end of the threaded rod, the sampling assembly includes a sampling box, the sampling box is fixedly connected to one end of the threaded rod, a drill bit is fixedly connected to the bottom end of the sampling box, a top rod penetrates and slides through the top end of the sampling box, the top rod penetrates and slides through the circular groove, and a threaded groove is formed at one end of the top rod.

[0015] Preferably, the end of the top rod provided with the threaded groove is threadedly connected through the second bearing plate, a turning handle is fixedly connected to one end of the top rod, a connecting sleeve is rotatably connected to the side wall of the other end of the top rod, a plurality of feed holes are symmetrically formed in the side wall of the sampling box, and a baffle is rotatably connected to the inner top wall of each feed hole.

[0016] Preferably, a pull rope is fixedly connected to the inner wall of the baffle, the pull rope is fixedly connected to the side wall of the connecting sleeve, and a second spring is fixedly connected between the connecting sleeve and the adjacent baffle, and each second spring is sleeved outside the adjacent pull rope.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. During the process of the device sinking, the contact between the first electrode and the second electrode causes the second motor to work. With the cooperation of the third gear and the fourth gear, the first support plate is driven to rotate. And when the first connecting rod rotates along the arc-shaped hole to the edge of the hole, the connecting plate is driven to rotate. With the cooperation of the annular inclined groove, the connecting plate moves upward during the rotation process, thereby driving the second support plate to rotate and rise synchronously. When the connecting plate moves to the top of the annular inclined groove, it falls under the action of gravity and contacts the ground again, solving the problem that when sampling in wetland soil, there is insufficient support on the ground surface, and under the gravity of the device, the device will sink too deep, making it difficult to control the sinking depth of the device. By changing the support positions of the first support plate and the second support plate, it is avoided that they are always in the same position, resulting in continuous sinking of the device and affecting the accuracy of the sampling result.

[0019] 2. Push down the pressing plate through the second connecting rod, so that the pressing plate squeezes the airbag. By compressing the airbag, the airbag expands to both sides, thereby pushing the third support plate to expand to both sides along the through hole from inside the second support plate, increasing the support surface of the second support plate and improving the support effect on the device. During the process that the second support plate rises and rotates and then contacts the ground again, it avoids the problem that the support surface of the second support plate is insufficient and causes the device to sink rapidly again, improving the practicability of the device.

[0020] 3. After drilling to the specified depth, rotate the ejector rod. Using the threaded fit between the second bearing plate and the ejector rod, move the ejector rod and the connecting sleeve upward. Use the reset of the second spring to push the baffle to expand, so that the wetland soil enters the inside of the sampling box. Then rotate the ejector rod downward, so that the ejector rod drives the baffle to rotate into the feeding hole through the pull rope, closing the feeding hole, avoiding soil loss and causing sampling failure and the situation of secondary sampling, and improving the sampling success rate of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic sectional structure diagram of the present invention;

[0023] Figure 3 is a schematic diagram of the structure of the threaded rod in the present invention;

[0024] Figure 4 is a schematic diagram of the structure of the adjustment assembly in the present invention;

[0025] Figure 5 is a schematic diagram of the structure of the threaded sleeve in the present invention;

[0026] Figure 6 is a schematic diagram of the structure of the first support plate and the second support plate in the present invention;

[0027] Figure 7 in the present invention Figure 6 is a partial enlarged schematic diagram of part A inside;

[0028] Figure 8 is a schematic diagram of the structure of the support assembly in the present invention;

[0029] Figure 9 is a schematic diagram of the structure of the sampling assembly in the present invention.

[0030] In the figure: 1. First support plate; 11. Connecting plate; 2. Second support plate; 21. Cavity; 22. Through hole; 3. Telescopic rod; 31. Scale; 32. Floating plate; 33. First electrode; 34. Second electrode; 35. Scale line; 4. First bearing plate; 41. Threaded sleeve; 42. Threaded rod; 43. Circular groove; 44. Annular inclined groove; 45. Second bearing plate; 46. First motor; 47. First rotating shaft; 48. First gear; 49. Fixed sleeve; 410. Second gear; 411. Leg; 412. Fixed socket; 413. Limit rod; 5. Adjustment assembly; 51. Second motor; 52. Second rotating shaft; 53. Third gear; 54. Installation sleeve; 55. Fourth gear; 56. First connecting rod; 57. Connecting plate; 58. Second connecting rod; 59. Arc-shaped hole; 510. Fixed plate; 6. Support assembly; 61. Pressing plate; 62. Airbag; 63. First spring; 64. Pushing plate; 65. Third support plate; 66. Rectangular hole; 7. Sampling assembly; 71. Sampling box; 72. Feeding hole; 73. Baffle; 74. Jacking rod; 75. Connecting sleeve; 76. Pulling rope; 77. Second spring; 78. Threaded groove; 79. Turning handle; 8. Drill bit. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1: Please refer to Figure 1 - Figure 2 and Figure 4 - Figure 7, the present invention provides a technical solution: a deep soil sampling device, including two first support plates 1, a second support plate 2 and a first carrier plate 4. The two first support plates 1 are fixedly connected by a connecting plate 11. The second support plate 2 is rotatably connected to the adjacent first support plate 1 by a telescopic rod 3. The top of each telescopic rod 3 is fixedly connected with a scale 31. The side wall of the scale 31 is symmetrically and fixedly connected with a first electrode 33. A floating plate 32 is slidably connected through the side wall of the scale 31. The top of the floating plate 32 is symmetrically and fixedly connected with a second electrode 34. An adjustment assembly 5 is installed on the top of the first carrier plate 4. The adjustment assembly 5 includes a second motor 51. The output end of the second motor 51 is fixedly connected with a second rotating shaft 52. The side wall of the second rotating shaft 52 is fixedly connected with a third gear 53. The side wall of the first carrier plate 4 is fixedly connected through a threaded sleeve 41, and the bottom wall is rotatably connected with an installation sleeve 54. The side wall of the threaded sleeve 41 is provided with an annular inclined groove 44. A connecting plate 57 is slidably connected through the side wall of the installation sleeve 54. The connecting plate 57 is symmetrically provided with arc-shaped holes 59. The connecting plate 57 is slidably connected with the inner wall of the annular inclined groove 44. The bottom of the connecting plate 57 is symmetrically and fixedly connected with a second connecting rod 58. Each second connecting rod 58 penetrates into the second support plate 2. The side wall of the installation sleeve 54 is fixedly connected with a fourth gear 55. The bottom of the fourth gear 55 is fixedly connected with a fixing plate 510. The bottom of the fixing plate 510 is symmetrically and fixedly connected with a first connecting rod 56. Each first connecting rod 56 penetrates through the adjacent arc-shaped hole 59 and is fixedly connected with the connecting plate 11.

[0033] In this embodiment: when sampling wet soil, first move the device to the sampling location, place the two first support plates 1 and the second support plate 2 on the soil surface, and rotate the four legs 411 to expand, and use the fixed socket 412 to support the entire device. Then start the first motor 46. By the operation of the first motor 46, the first rotating shaft 47 and the first gear 48 rotate. Using the meshing effect between the gears, drive the second gear 410 and the threaded rod 42 to rotate. Through the threaded cooperation between the threaded sleeve 41 and the threaded rod 42, the drill bit 8 rotates and drills downward into the ground;

[0034] As the drill pipe is continuously lowered deeper, the first support plate 1 and the second support plate 2 start to sink. By setting the floating plate 32, the floating plate 32 always floats on the soil surface and will not sink together with the device. And a telescopic rod 3 and a scale 31 are arranged between the first support plate 1 and the second support plate 2. The scale 31 sinks together with the device, thereby marking the sinking distance. When the first electrode 33 on the side wall of the scale 31 contacts the second electrode 34 in the floating plate 32, the second motor 51 starts. By the operation of the second motor 51, the second rotating shaft 52 and the third gear 53 rotate, and then drive the fourth gear 55 to rotate. Through the first connecting rod 56, the first support plate 1 rotates, thereby changing the support position of the first support plate 1, and filling the pit generated by the sinking of the first support plate 1 and the second support plate 2 for continuous use;

[0035] When the first connecting rod 56 rotates along the arc-shaped hole 59 to the hole edge, it drives the connecting disc 57 to rotate. By setting the annular inclined groove 44, the connecting disc 57 moves upward during the rotation process, and then drives the second support plate 2 to rotate and rise synchronously through the second connecting rod 58. The connecting disc 57 moves to the top of the annular inclined groove 44 and falls under the action of gravity, contacting the ground again, so that the support position of the second support plate 2 changes by a certain angle, avoiding always being in the same position, resulting in continuous sinking of the device and affecting the sampling result.

[0036] Embodiment 2: Please refer to Figure 2 and Figure 8 , the first support plate 1 and the second support plate 2 are arranged in a cross shape. The distance between the two first support plates 1 is greater than the width of the second support plate 2, which will not affect the rotation of the second support plate 2. The floating plate 32 is in a bowl shape. The first electrode 33 and the second electrode 34 are both electrically connected to the second motor 51. The second motor 51 is fixedly connected to the top of the first bearing plate 4. The mounting sleeve 54 is sleeved on the outer wall of the threaded sleeve 41. The third gear 53 and the fourth gear 55 are meshed. The second rotating shaft 52 is rotatably connected through the first bearing plate 4. Scale lines 35 are symmetrically arranged on the side wall of the scale 31. The first support plate 1 is in an L-shaped structure.

[0037] The threaded sleeve 41 is internally threadedly connected to the threaded rod 42. A circular groove 43 is provided inside the threaded rod 42. A plurality of legs 411 are symmetrically and rotatably connected to the bottom end of the first bearing plate 4. A fixed socket 412 is fixedly connected to the side wall of one end of each leg 411. A plurality of limiting rods 413 are symmetrically and fixedly connected to the top end of the first bearing plate 4. The plurality of limiting rods 413 jointly slidably connect to the second bearing plate 45; the threaded rod 42 is rotatably connected to the bottom end of the second bearing plate 45. A fixed sleeve 49 is fixedly connected to the side wall of the threaded rod 42 close to the second bearing plate 45. A second gear 410 is fixedly connected to the side wall of the fixed sleeve 49. A first motor 46 is fixedly connected to the top end of the second bearing plate 45. A first rotating shaft 47 is fixedly connected to the output end of the first motor 46. The first rotating shaft 47 penetrates the rear side wall of the second bearing plate 45 and is fixedly connected to a first gear 48. The first gear 48 and the second gear 410 are meshed and connected.

[0038] Cavities 21 are symmetrically provided inside the inner wall of the second support plate 2. Through holes 22 are symmetrically provided on the inner side walls of each cavity 21. A support assembly 6 is installed inside the cavity 21. The support assembly 6 includes a pressing plate 61. The pressing plate 61 is slidably connected to the inner wall of the cavity 21. The pressing plate 61 is fixedly connected to the second connecting rod 58; a first spring 63 is fixedly connected between the pressing plate 61 and the inner top wall of the cavity 21. The first spring 63 is sleeved on the side wall of the second connecting rod 58. An airbag 62 is fixedly connected to the inner bottom wall of the cavity 21. Push plates 64 are symmetrically fixedly connected to the side wall of the airbag 62; a third support plate 65 is slidably connected inside each through hole 22. The third support plate 65 is fixedly connected to the adjacent push plate 64. A rectangular hole 66 is provided on the side wall of each third support plate 65. The telescopic rod 3 penetrates inside the rectangular hole 66.

[0039] In this embodiment: During the process that the second support plate 2 rises, rotates and then contacts the ground again, to avoid insufficient supporting surface of the second support plate 2 and cause the device to sink rapidly again; the pressing plate 61 is pushed downward through the second connecting rod 58, so that the pressing plate 61 squeezes the airbag 62. By compressing the airbag 62, the airbag 62 expands toward both sides, thereby pushing the third support plate 65 to expand from inside the second support plate 2 along the through holes 22 toward both sides, increasing the supporting surface of the second support plate 2, improving the supporting effect on the device, avoiding the device from sinking rapidly again, and during the rising process of the second support plate 2, the first spring 63 contracts and resets, driving the airbag 62 to contract, so that the third support plates 65 on both sides are retracted inside the second support plate 2, avoiding the limit effect on the first support plate 1 caused by one end of the expanded third support plate 65.

[0040] Embodiment Three: Please refer to Figure 3 and Figure 9, one end of the threaded rod 42 is fixedly installed with a sampling assembly 7. The sampling assembly 7 includes a sampling box 71. The sampling box 71 is fixedly connected to one end of the threaded rod 42. A drill bit 8 is fixedly connected to the bottom end of the sampling box 71. A top rod 74 is slidably connected through the top end of the sampling box 71. The top rod 74 is slidably connected through the inside of the circular groove 43. A threaded groove 78 is provided at one end of the top rod 74.

[0041] One end of the top rod 74 provided with the threaded groove 78 is threadedly connected through the second bearing plate 45. A turning handle 79 is fixedly connected to one end of the top rod 74. A connecting sleeve 75 is rotatably connected to the side wall of the other end of the top rod 74. A plurality of feed holes 72 are symmetrically provided on the side wall of the sampling box 71. A baffle 73 is rotatably connected to the inner top wall of each feed hole 72; a pull rope 76 is fixedly connected to the inner wall of the baffle 73. The pull rope 76 is fixedly connected to the side wall of the connecting sleeve 75. A second spring 77 is fixedly connected between the connecting sleeve 75 and the adjacent baffle 73. Each second spring 77 is sleeved outside the adjacent pull rope 76.

[0042] In this embodiment: During the soil sampling process, after the soil enters the sampler, during the ascending process, there is no locking of the baffle 73 of the sampler, and the soil will leak out along the baffle 73, resulting in the loss of the sampled soil and the failure of sampling. It is necessary to sample again, which affects the normal progress of the sampling work; after drilling to the specified depth, rotate the top rod 74, utilize the thread fit between the second bearing plate 45 and the top rod 74, move the top rod 74 and the connecting sleeve 75 upward, and utilize the reset of the second spring 77 to push the baffle 73 to unfold, so that the wetland soil enters the sampling box 71. Then rotate the top rod 74 downward, so that the top rod 74 drives the baffle 73 to rotate into the feed hole 72 through the pull rope 76, closing the feed hole 72 and avoiding the situation of soil loss and the need for secondary sampling, thereby improving the sampling success rate of the device.

[0043] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A deep soil sampling device, comprising two first support plates (1), a second support plate (2) and a first carrier plate (4), characterized in that: The two first support plates (1) are fixedly connected by a connecting plate (11). The second support plate (2) is rotatably connected to the adjacent first support plate (1) by a telescopic rod (3). The first support plate (1) and the second support plate (2) are arranged in a cross shape. A scale (31) is fixedly connected to the top end of each telescopic rod (3). First electrodes (33) are symmetrically and fixedly connected to the side wall of the scale (31). A floating plate (32) is slidably connected through the side wall of the scale (31). Second electrodes (34) are symmetrically and fixedly connected to the top end of the floating plate (32). An adjustment assembly (5) is installed on the top end of the first bearing plate (4). The adjustment assembly (5) includes a second motor (51). A threaded sleeve (41) is fixedly connected through the side wall of the first bearing plate (4), and a mounting sleeve (54) is rotatably connected to the bottom wall. A connecting plate (57) is slidably connected through the side wall of the mounting sleeve (54). Arc-shaped holes (59) are symmetrically formed in the connecting plate (57). Second connecting rods (58) are symmetrically and fixedly connected to the bottom end of the connecting plate (57). Each second connecting rod (58) penetrates into the second support plate (2). A fourth gear (55) is fixedly connected to the side wall of the mounting sleeve (54). A fixing plate (510) is fixedly connected to the bottom end of the fourth gear (55). First connecting rods (56) are symmetrically and fixedly connected to the bottom end of the fixing plate (510). Each first connecting rod (56) penetrates through the adjacent arc-shaped hole (59) and is fixedly connected to the connecting plate (11).

2. The deep soil sampling device according to claim 1, characterized in that: A second rotating shaft (52) is fixedly connected to the output end of the second motor (51). A third gear (53) is fixedly connected to the side wall of the second rotating shaft (52). An annular inclined groove (44) is formed in the side wall of the threaded sleeve (41). The connecting plate (57) is slidably connected to the inner wall of the annular inclined groove (44). The floating plate (32) is in a bowl shape. The first electrodes (33) and the second electrodes (34) are both electrically connected to the second motor (51). The second motor (51) is fixedly connected to the top end of the first bearing plate (4). The mounting sleeve (54) is sleeved on the outer wall of the threaded sleeve (41). The third gear (53) and the fourth gear (55) are meshed. The second rotating shaft (52) is rotatably connected through the first bearing plate (4). Scale lines (35) are symmetrically formed in the side wall of the scale (31).

3. The deep soil sampling device according to claim 1, characterized in that: A threaded rod (42) is in threaded connection with the inside of the threaded sleeve (41). One end of the threaded rod (42) penetrates through the connecting plate (11) and the second support plate (2) in sequence. A circular groove (43) is formed in the threaded rod (42). A plurality of legs (411) are symmetrically and rotatably connected to the bottom end of the first bearing plate (4). A fixed socket (412) is fixedly connected to the side wall of one end of each leg (411). A plurality of limiting rods (413) are symmetrically and fixedly connected to the top end of the first bearing plate (4). The second bearing plate (45) is slidably connected by the plurality of limiting rods (413).

4. The deep soil sampling device according to claim 3, characterized in that: The threaded rod (42) is rotatably connected to the bottom end of the second bearing plate (45). One end side wall of the threaded rod (42) close to the second bearing plate (45) is fixedly connected with a fixed sleeve (49). The side wall of the fixed sleeve (49) is fixedly connected with a second gear (410). The top end of the second bearing plate (45) is fixedly connected with a first motor (46). The output end of the first motor (46) is fixedly connected with a first rotating shaft (47). The first rotating shaft (47) penetrates through the rear side wall of the second bearing plate (45) and is fixedly connected with a first gear (48). The first gear (48) and the second gear (410) are meshed and connected.

5. The deep soil sampling device according to claim 1, characterized in that: The inner wall of the second support plate (2) is symmetrically provided with cavities (21). A support assembly (6) is installed inside the cavities (21). The support assembly (6) includes a pressing plate (61). The pressing plate (61) is slidably connected to the inner wall of the cavity (21). The pressing plate (61) is fixedly connected with a second connecting rod (58).

6. The deep soil sampling device according to claim 5, characterized in that: The pressing plate (61) and the inner top wall of the cavity (21) are fixedly connected with a first spring (63). The first spring (63) is sleeved on the side wall of the second connecting rod (58). Each inner side wall of the cavity (21) is symmetrically provided with through holes (22). The inner bottom wall of the cavity (21) is fixedly connected with an air bag (62). The side wall of the air bag (62) is symmetrically fixedly connected with push plates (64).

7. The deep soil sampling device according to claim 6, characterized in that: Each through hole (22) internally is slidably connected with a third support plate (65). The third support plate (65) is fixedly connected with the adjacent push plate (64). Each side wall of the third support plate (65) is provided with a rectangular hole (66). The telescopic rod (3) penetrates through the rectangular hole (66) internally.

8. The deep soil sampling device according to claim 3, characterized in that: One end of the threaded rod (42) is fixedly installed with a sampling assembly (7). The sampling assembly (7) includes a sampling box (71). The sampling box (71) is fixedly connected to one end of the threaded rod (42). The bottom end of the sampling box (71) is fixedly connected with a drill bit (8). The top end of the sampling box (71) is slidably connected through a top rod (74). The top rod (74) is slidably connected through the circular groove (43) internally. One end of the top rod (74) is provided with a threaded groove (78).

9. The deep soil sampling device according to claim 8, wherein: One end of the top rod (74) provided with the threaded groove (78) is threadedly connected through the second bearing plate (45). One end of the top rod (74) is fixedly connected with a turning handle (79). The other end side wall of the top rod (74) is rotatably connected with a connecting sleeve (75). The side wall of the sampling box (71) is symmetrically provided with a plurality of feeding holes (72). The inner top wall of each feeding hole (72) is rotatably connected with a baffle (73).

10. A deep soil sampling device according to claim 9, characterized in that: The inner wall of the baffle (73) is fixedly connected with a pull rope (76). The pull rope (76) is fixedly connected with the side wall of the connecting sleeve (75). A second spring (77) is fixedly connected between the connecting sleeve (75) and the adjacent baffle (73). Each second spring (77) is sleeved outside the adjacent pull rope (76).

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