A soil sampling device for environmental engineering

Abstract

The utility model discloses a kind of soil sampling devices for environmental protection engineering, it is related to soil sampling technical field, including sampling mechanism, the mechanism includes rack.The utility model is by being provided with anti-sinking mechanism, by the first anti-sinking board and the second anti-sinking board of expandable increase support area, dispersing device weight, avoid universal wheel subsidence to cause device inclination or deviation, guarantee the accuracy of sampling drill pipe drilling depth, before sampling in soft ground, by shaft pin, the first anti-sinking board in the left side mounting block inboard of rack, the second anti-sinking board in the right side mounting block inboard is downward and turns and expands, so that the first anti-sinking board and the second anti-sinking board adhere ground, increase the contact area of device and ground, without using, by storage mechanism, the first anti-sinking board and the second anti-sinking board are stored upwards, do not affect device movement, solved above-mentioned device moving seat bottom uses universal wheel as moving support structure, not set up sinking structure for soft ground, prone to sinking problem.

Description

Technical Field

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

[0002] In the process of environmental protection engineering construction and environmental monitoring, soil sampling is the core link to obtain key data such as soil pollution status and physicochemical properties. The sampling accuracy and operational stability of soil sampling devices directly affect the reliability of subsequent test results. Various soil sampling devices already exist in the prior art. For example, Chinese utility model patent with authorization announcement number CN223485548U discloses a portable soil sampling device for environmental protection engineering. It uses a concave moving seat to support the sampling mechanism, uses a servo motor to drive the screw to rotate, and drives the movable plate and sampling drill to move vertically along the guide rod. At the same time, it cooperates with a rotary motor to drive the sampling drill to rotate, realizes soil drilling and sampling through the drilling saw teeth, and pushes the push plate through the pressure rod to complete the soil sample ejection, which to a certain extent meets the needs of portable sampling. However, the aforementioned existing equipment still has significant technical defects in practical applications: its mobile base uses casters as a moving support structure and lacks an anti-sinking mechanism for soft ground. When sampling in soft ground environments such as wetlands, farmland, and backfill soil, common in environmental engineering projects, the casters are prone to sinking due to insufficient soil bearing capacity, causing the sampling device to tilt or shift position. This not only directly affects the accuracy of the drilling depth of the sampling drill, causing sample collection depth deviation, but may also lead to problems such as drill jamming and sampling failure. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a soil sampling device for environmental engineering, which has the advantage of anti-sinking and solves the problem that the bottom of the moving seat of the above-mentioned device uses universal wheels as the moving support structure and does not have an anti-sinking structure for soft ground, which easily leads to sinking.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a soil sampling device for environmental engineering, comprising a sampling mechanism, the mechanism including a frame, universal wheels fixedly installed at the four corners of the bottom of the frame, a lifting screw movably connected to the inside of the frame via bearings, a lifting plate threadedly connected to the top of the lifting screw, a drilling motor fixedly installed on the front side of the top of the lifting plate, a drill pipe detachably connected to the output end of the drilling motor, a lifting motor fixedly installed on the top of the frame, the output end of the lifting motor fixedly connected to the top of the lifting screw, an opening at the bottom of the frame, the opening being coaxial with the drill pipe, and an anti-sinking mechanism, the anti-sinking mechanism including a mounting block, the mounting block being fixedly connected to the front and rear sides of the bottom left and right sides of the frame, a first anti-sinking plate movably connected to the inner side of the left mounting block via a pivot pin, a second anti-sinking plate movably connected to the inner side of the right mounting block via a pivot pin, and a storage mechanism fixedly connected to the top right side of the first anti-sinking plate and the top left side of the second anti-sinking plate.

[0005] As a preferred embodiment of this utility model, the storage mechanism includes a fixing block, which is fixedly connected to the top of the right side of the first anti-sinking plate and the top of the left side of the second anti-sinking plate. The fixing block has a fixing hole inside, and a locking rod is inserted into the fixing hole. A connecting rod is fixedly connected to the top of the locking rod. A transmission rod is provided on the back of the frame. The backs of the two connecting rods are fixedly connected to the left and right sides of the front of the transmission rod, respectively. A transmission component is fixedly connected to the back of the transmission rod.

[0006] In a preferred embodiment of this invention, the transmission assembly includes a connecting block, which is fixedly connected to the back of the transmission rod. The connecting block is internally threaded with a transmission screw. The top and bottom surfaces of the transmission screw are movably connected to support blocks via bearings. The front of the support block is fixedly connected to the back of the frame.

[0007] As a preferred embodiment of this utility model, a guide rod is slidably connected to the middle position inside the transmission rod through a through hole, and the two ends of the guide rod are fixedly connected to the inner side of the support block.

[0008] As a preferred embodiment of this utility model, ground nails are fixedly installed on the left side of the first anti-sinking plate and the right side of the second anti-sinking plate, and multiple ground nails are provided and distributed at equal intervals.

[0009] As a preferred embodiment of this invention, a handle is fixedly connected to the top of the transmission screw, and the handle is used to operate the transmission screw.

[0010] As a preferred embodiment of this utility model, the surface of the handle is provided with anti-slip grooves, and the anti-slip grooves are provided in multiple ways and are evenly distributed in a ring around the handle axis.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up an anti-sinking mechanism, increases the support area and distributes the weight of the device through the unfoldable first and second anti-sinking plates, preventing the casters from sinking and causing the device to tilt or shift, thus ensuring the accuracy of the drilling depth of the sampling drill pipe. Before sampling on soft ground, the first anti-sinking plate on the inside of the left mounting block and the second anti-sinking plate on the inside of the right mounting block are rotated downwards and unfolded by the axle pin, so that the first and second anti-sinking plates are in contact with the ground, increasing the contact area between the device and the ground. When not in use, the first and second anti-sinking plates are folded upwards by the storage mechanism without affecting the movement of the device. This solves the problem of sinking that occurs when the bottom of the moving base of the above-mentioned device uses casters as the moving support structure and does not have an anti-sinking structure for soft ground, thus achieving the anti-sinking effect.

[0012] 2. This utility model, by setting up a storage mechanism, realizes convenient storage and locking of the first dustproof plate and the second anti-sinking plate, preventing the first dustproof plate and the second anti-sinking plate from shaking randomly during the movement of the device, ensuring stability during the movement, while reducing the space occupied by the device after storage and improving portability. Through the linkage of the transmission rod and the connecting rod, the locking and unlocking of the first anti-sinking plate and the second anti-sinking plate can be controlled synchronously without separate operation, reducing the difficulty of operation and saving storage and unfolding time.

[0013] 3. This utility model, by setting up a transmission component, utilizes the stability of threaded transmission to ensure accurate positioning when the connecting block drives the transmission rod to move, avoids misalignment between the locking rod and the fixing hole, ensures the reliability of the anti-sinking plate storage and locking, prevents the anti-sinking plate from loosening after storage, and the support block is fixed to the back of the frame. The transmission component and the frame have a high degree of integration, do not occupy additional sampling space, and do not affect the normal operation of the sampling mechanism, thereby improving the overall structural rationality of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective; Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0015] In the diagram: 1. Sampling mechanism; 101. Frame; 102. Casters; 103. Lifting screw; 104. Lifting plate; 105. Drilling motor; 106. Drill pipe; 107. Lifting motor; 108. Opening; 2. Anti-sinking mechanism; 21. Mounting block; 22. First anti-sinking plate; 23. Second anti-sinking plate; 3. Storage mechanism; 31. Fixing block; 32. Fixing hole; 33. Locking rod; 34. Connecting rod; 35. Transmission rod; 36. Transmission assembly; 361. Connecting block; 362. Transmission screw; 363. Support block; 4. Guide rod; 5. Ground stake; 6. Handle; 7. Anti-slip groove. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0020] Example 1 Reference Figure 1-3This is the first embodiment of the present invention, providing a soil sampling device for environmental engineering, including a sampling mechanism 1. The mechanism includes a frame 101, with casters 102 fixedly installed at the four corners of the bottom of the frame 101. A lifting screw 103 is movably connected to the inside of the frame 101 via bearings. A lifting plate 104 is threadedly connected to the top of the surface of the lifting screw 103. A drilling motor 105 is fixedly installed on the front side of the top of the lifting plate 104. A drill pipe 106 is detachably connected to the output end of the drilling motor 105. A lifting motor 107 is fixedly installed on the top of the frame 101, and the output end of the lifting motor 107 is connected to... The top of the lifting screw 103 is fixedly connected, and the bottom of the frame 101 has an opening 108. The opening 108 and the drill pipe 106 are on the same axis. The anti-sinking mechanism 2 includes a mounting block 21, which is fixedly connected to the front and rear sides of the bottom left side and the front and rear sides of the bottom right side of the frame 101. The inner side of the left mounting block 21 is movably connected to the first anti-sinking plate 22 through a shaft pin, and the inner side of the right mounting block 21 is movably connected to the second anti-sinking plate 23 through a shaft pin. The top right side of the first anti-sinking plate 22 and the top left side of the second anti-sinking plate 23 are both fixedly connected to the storage mechanism 3.

[0021] Specifically, by setting up an anti-sinking mechanism 2, the support area is increased by the deployable first anti-sinking plate 22 and the second anti-sinking plate 23, the weight of the device is distributed, and the universal wheel 102 is prevented from sinking, which would cause the device to tilt or shift. This ensures the accuracy of the drilling depth of the sampling drill pipe 106, eliminates sample depth deviation, and improves the authenticity of the test data.

[0022] Furthermore, before sampling on soft ground, the first anti-sinking plate 22 on the inside of the left mounting block 21 and the second anti-sinking plate 23 on the inside of the right mounting block 21 of the frame 101 are rotated downwards and unfolded by means of the pivot pin, so that the first anti-sinking plate 22 and the second anti-sinking plate 23 are in contact with the ground, increasing the contact area between the device and the ground. When not in use, the first anti-sinking plate 22 and the second anti-sinking plate 23 are stored upwards by means of the storage mechanism 3, without affecting the movement of the device.

[0023] Example 2 In the second embodiment of this utility model, the storage mechanism 3 includes a fixing block 31, which is fixedly connected to the top of the right side of the first anti-sinking plate 22 and the top of the left side of the second anti-sinking plate 23. The fixing block 31 has a fixing hole 32 inside, and a locking rod 33 is inserted into the fixing hole 32. A connecting rod 34 is fixedly connected to the top of the locking rod 33. A transmission rod 35 is provided on the back of the frame 101. The backs of the two connecting rods 34 are fixedly connected to the left and right sides of the front of the transmission rod 35, respectively. A transmission assembly 36 is fixedly connected to the back of the transmission rod 35.

[0024] Specifically, by setting up the storage mechanism 3, the first dustproof plate and the second anti-sinking plate 23 can be conveniently stored and locked, preventing the first dustproof plate and the second anti-sinking plate 23 from shaking randomly during the movement of the device, ensuring stability during the movement, and reducing the space occupied by the device after storage, thus improving portability. Through the linkage of the transmission rod 35 and the connecting rod 34, the locking and unlocking of the first anti-sinking plate 22 and the second anti-sinking plate 23 can be controlled synchronously without separate operation, reducing the difficulty of operation and saving storage and unfolding time.

[0025] Furthermore, when it is necessary to store the first anti-sinking plate 22 and the second anti-sinking plate 23, the transmission assembly 36 drives the transmission rod 35 to move. The connecting rods 34, which are fixedly connected to the left and right sides of the front of the transmission rod 35, move synchronously with the transmission rod 35. The connecting rods 34 drive the locking rod 33, which is fixedly connected to the top, to be pulled out from the fixing hole 32 inside the fixing block 31. Then, the first anti-sinking plate 22 and the second anti-sinking plate 23 are rotated upward to the storage position that fits the bottom of the frame 101. Then, the transmission assembly 36 drives the transmission rod 35 to move in the opposite direction, so that the locking rod 33 is reinserted into the fixing hole 32 of the fixing block 31, locking the first anti-sinking plate 22 and the second anti-sinking plate 23 in the storage state. When unfolding, the operation can be reversed.

[0026] Example 3 In the third embodiment of this utility model, the transmission assembly 36 includes a connecting block 361, which is fixedly connected to the back of the transmission rod 35. The internal thread of the connecting block 361 is connected to the transmission screw 362. The top and bottom of the surface of the transmission screw 362 are movably connected to the support block 363 through bearings. The front of the support block 363 is fixedly connected to the back of the frame 101.

[0027] Specifically, by setting up the transmission component 36, the stability of the threaded transmission is utilized to ensure that the position is accurate when the connecting block 361 drives the transmission rod 35 to move, avoiding misalignment between the locking rod 33 and the fixing hole 32, ensuring the reliability of the anti-sinking plate storage and locking, and preventing the anti-sinking plate from loosening after storage. The support block 363 is fixed on the back of the frame 101. The transmission component 36 and the frame 101 have a high degree of integration, do not occupy additional sampling space, and do not affect the normal operation of the sampling mechanism 1, thus improving the overall structural rationality of the device.

[0028] Furthermore, when the transmission screw 362 is rotated, since the transmission screw 362 is threadedly connected to the connecting block 361 and the connecting block 361 is fixed on the back of the transmission rod 35, and the top and bottom of the transmission screw 362 are movably connected to the support block 363 fixed on the back of the frame 101 through bearings, the rotation of the transmission screw 362 will drive the connecting block 361 to move along the axial direction of the transmission screw 362. The connecting block 361 drives the transmission rod 35 to move synchronously, and then drives the connecting rod 34 and the locking rod 33 of the storage mechanism 3 to move through the transmission rod 35, so as to realize the insertion and withdrawal of the locking rod 33.

[0029] Working principle: First, the operator pushes the frame 101, using the casters 102 to move the device to the sampling point required for the environmental project. Then, the operator grips the handle 6, whose surface has anti-slip grooves 7 to increase friction and prevent slipping due to sweaty or dirty hands. Turning the handle 6 drives the transmission screw 362 to rotate. Since the transmission screw 362 is movably connected to two support blocks 363 fixed to the back of the frame 101 via bearings, and is threadedly connected to the connecting block 361 fixed to the back of the transmission rod 35, the rotation of the transmission screw 362 drives the connecting block 361 to move downwards along the axis of the transmission screw 362. The connecting block 361 drives the transmission rod 35 to move downwards synchronously. During the movement of the transmission rod 35, the through hole in the middle of its interior slides along the guide rod 4, guiding... Rod 4 restricts the lateral displacement of transmission rod 35, ensuring that transmission rod 35 moves smoothly in the vertical direction. Connecting rods 34 on the left and right sides of the front of transmission rod 35 move downward synchronously with transmission rod 35. Connecting rods 34 drive the locking rod 33 at the top to be pulled out from the fixing hole 32 inside the fixing block 31, releasing the lock on the first anti-sinking plate 22 and the second anti-sinking plate 23. Then, through the axle pin inside the mounting block 21 on the left side of the frame 101, the first anti-sinking plate 22 is rotated downward and unfolded. Through the axle pin inside the mounting block 21 on the right side of the frame 101, the second anti-sinking plate 23 is rotated downward and unfolded until the first anti-sinking plate 22 and the second anti-sinking plate 23 are completely in contact with the ground. At this time, multiple equidistant ground nails 5 on the left side of the first anti-sinking plate 22 and the right side of the second anti-sinking plate 23 are inserted into the loose soil. The device forms a mechanical engagement with the soil, increasing the contact area between the device and the ground and limiting horizontal sliding, preventing the casters 102 from sinking and achieving stable fixation. Then, the lifting motor 107 and the drilling motor 105 are started simultaneously. The output end of the lifting motor 107 drives the lifting screw 103, which is movably connected to the frame 101 via bearings, to rotate. Since the lifting screw 103 is threadedly connected to the lifting plate 104, the rotation of the lifting screw 103 drives the lifting plate 104 to move vertically downward along the frame 101. The output end of the drilling motor 105 drives the drill pipe 106 to rotate at high speed. When the lifting plate 104 descends, it synchronously drives the rotating drill pipe 106 to pass through the opening 108 at the bottom of the frame 101 and drill into the soil below. During the process of the drill pipe 106 rotating and drilling into the soil, soil enters the drill pipe 106. 6. After internal sample collection, the operating time of the lifting motor 107 is controlled according to the required sampling depth. Once the drill pipe 106 reaches the specified depth, the drilling motor 105 is turned off, and the lifting motor 107 is started in reverse. The output end of the lifting motor 107 drives the lifting screw 103 to rotate in the opposite direction, driving the lifting plate 104 to move vertically upward along the frame 101. The lifting plate 104 drives the drill pipe 106 to rise synchronously until the drill pipe 106 is completely detached from the soil and returns to its initial position. The lifting motor 107 is then turned off, and the operator removes the drill pipe 106 from the output end of the drilling motor 105. The soil sample inside can be obtained by tilting the drill pipe 106. When it is necessary to store the first anti-settlement plate 22 and the second anti-settlement plate 23, the first anti-settlement plate 22 and the second anti-settlement plate 23 are rotated upward.Until the two parts are aligned with the left and right sides of the frame 101, the handle 6 is then rotated in the opposite direction, causing the transmission screw 362 to rotate in the opposite direction. This drives the connecting block 361, transmission rod 35, and connecting rod 34 to move upwards synchronously, allowing the locking rod 33 to re-insert into the fixing hole 32 of the fixing block 31. This locks the first anti-sinking plate 22 and the second anti-sinking plate 23 in their retracted state, preventing them from shaking during movement.

[0030] In summary: By setting up the anti-sinking mechanism 2, the support area is increased by the unfoldable first anti-sinking plate 22 and the second anti-sinking plate 23, the weight of the device is distributed, and the universal wheel 102 is prevented from sinking, which would cause the device to tilt or shift. This ensures the accuracy of the drilling depth of the sampling drill pipe 106. Before sampling on soft ground, the first anti-sinking plate 22 on the inside of the left mounting block 21 and the second anti-sinking plate 23 on the inside of the right mounting block 21 of the frame 101 are rotated downwards and unfolded by the axle pin, so that the first anti-sinking plate 22 and the second anti-sinking plate 23 are in contact with the ground, increasing the contact area between the device and the ground. When not in use, the first anti-sinking plate 22 and the second anti-sinking plate 23 are folded upwards by the storage mechanism 3, without affecting the movement of the device. This solves the problem that the device's moving base uses universal wheels as a moving support structure and does not have an anti-sinking structure for soft ground, which is prone to sinking. This achieves the anti-sinking effect.

[0031] The motors and screws used in this application can be additionally equipped with protective measures that are common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0032] It should be noted that (motor, screw) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A soil sampling device for environmental engineering, characterized in that: The system includes a sampling mechanism (1), which includes a frame (101). Universal casters (102) are fixedly installed at the four corners of the bottom of the frame (101). A lifting screw (103) is movably connected to the inside of the frame (101) via bearings. A lifting plate (104) is threadedly connected to the top surface of the lifting screw (103). A drilling motor (105) is fixedly installed on the front side of the top of the lifting plate (104). A drill pipe (106) is detachably connected to the output end of the drilling motor (105). A lifting motor (107) is fixedly installed on the top of the frame (101), and the output end of the lifting motor (107) is fixedly connected to the top of the lifting screw (103). The bottom of the frame (101) is provided with an opening (108), the opening (108) and the drill pipe (106) are on the same axis, and the anti-sinking mechanism (2) includes a mounting block (21), the mounting block (21) is fixedly connected to the front and rear sides of the bottom left side and the front and rear sides of the bottom right side of the frame (101), the inner side of the mounting block (21) on the left side is movably connected to a first anti-sinking plate (22) by a shaft pin, the inner side of the mounting block (21) on the right side is movably connected to a second anti-sinking plate (23) by a shaft pin, and the top right side of the first anti-sinking plate (22) and the top left side of the second anti-sinking plate (23) are both fixedly connected to a storage mechanism (3).

2. The soil sampling device for environmental engineering according to claim 1, characterized in that: The storage mechanism (3) includes a fixing block (31), which is fixedly connected to the top of the right side of the first anti-sinking plate (22) and the top of the left side of the second anti-sinking plate (23). The fixing block (31) has a fixing hole (32) inside, and a locking rod (33) is inserted into the fixing hole (32). A connecting rod (34) is fixedly connected to the top of the locking rod (33). A transmission rod (35) is provided on the back of the frame (101). The backs of the two connecting rods (34) are fixedly connected to the left and right sides of the front of the transmission rod (35), respectively. A transmission assembly (36) is fixedly connected to the back of the transmission rod (35).

3. The soil sampling device for environmental engineering according to claim 2, characterized in that: The transmission assembly (36) includes a connecting block (361), which is fixedly connected to the back of the transmission rod (35). The connecting block (361) is internally threaded with a transmission screw (362). The top and bottom of the surface of the transmission screw (362) are movably connected to a support block (363) via bearings. The front of the support block (363) is fixedly connected to the back of the frame (101).

4. A soil sampling device for environmental engineering according to claim 2, characterized in that: The transmission rod (35) has a guide rod (4) slidably connected to the middle position inside through a through hole, and the two ends of the guide rod (4) are fixedly connected to the inner side of the support block (363).

5. A soil sampling device for environmental engineering according to claim 1, characterized in that: Ground nails (5) are fixedly installed on the left side of the first anti-sinking plate (22) and the right side of the second anti-sinking plate (23). There are multiple ground nails (5) and they are distributed at equal intervals.

6. A soil sampling device for environmental engineering according to claim 3, characterized in that: A handle (6) is fixedly connected to the top of the transmission screw (362), and the handle (6) is used to operate the transmission screw (362).

7. A soil sampling device for environmental engineering according to claim 6, characterized in that: The surface of the handle (6) is provided with anti-slip grooves (7), and there are multiple anti-slip grooves (7) distributed at equal intervals in a ring around the axis of the handle (6).

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