Soil layer surveying device for engineering surveying

Abstract

The invention relates to the field of engineering surveying, and discloses a soil layer surveying device for engineering surveying, which comprises a sampling mechanism, a mounting bracket detachably arranged on the outer side of the sampling mechanism and used for supporting the sampling mechanism, and an insertion rod inserted into the mounting bracket and connected with the sampling mechanism, the control mechanism is used for controlling the depth of the sampling mechanism inserted into soil; the adjusting mechanism is arranged on the mounting bracket, is connected with the insertion rod and is used for controlling the insertion and extraction movement of the insertion rod; the scissor lift is arranged on the mounting support, connected with the adjusting mechanism and used for controlling the adjusting mechanism to move up and down, and a moving space is provided for the adjusting mechanism to pull and insert the inserting rod, an operator can easily adjust the height of the adjusting mechanism by controlling the scissor lift to ascend and descend, and the safety of the operator is improved. Therefore, the insertion rod can be conveniently inserted and pulled out, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering survey, and in particular to a soil layer surveying device for engineering surveying. Background Art

[0002] In the field of engineering surveying, accurate soil survey is a crucial link in the early stages of many engineering projects (such as construction projects, road and bridge construction, geological exploration, etc.). Through soil survey, we can accurately understand the distribution, properties, bearing capacity and other key information of underground soil layers, providing a scientific basis for the design and construction of subsequent projects.

[0003] In the actual survey process, different engineering projects have different requirements for the depth of soil sampling. For example, shallow foundation buildings may only need to obtain shallow soil samples, while large bridges or high-rise buildings need to go deep underground to obtain deeper soil samples.

[0004] Existing equipment has the following disadvantages: Traditional soil layer survey methods often rely on manual excavation or simple mechanical sampling equipment. Manual excavation is not only labor-intensive and inefficient, but most existing survey devices are difficult to accurately control the sampling depth, resulting in insufficient sampling accuracy and pertinence.

[0005] Therefore, the present application proposes a soil layer surveying device for engineering surveying to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a soil layer surveying device for engineering surveying, so as to solve the problem that the above-mentioned manual excavation is not only labor-intensive and inefficient, but also most of the existing surveying devices are difficult to accurately control the sampling depth, resulting in insufficient sampling accuracy and specificity.

[0007] To achieve the above object, the present invention provides the following technical solution: a soil layer surveying device for engineering surveying, comprising a sampling mechanism, a mounting bracket detachably arranged outside the sampling mechanism for supporting the sampling mechanism, and further comprising: An insertion rod, inserted into the mounting bracket and connected to the sampling mechanism, for controlling the depth of the sampling mechanism inserted into the soil; An adjustment mechanism, disposed on the mounting bracket and connected to the insertion rod, for controlling the insertion and extraction movement of the insertion rod; A scissor lift is arranged on the mounting bracket and connected to the adjusting mechanism, and is used to control the adjusting mechanism to move up and down, and provide a moving space for the adjusting mechanism to insert and remove the plugging rod.

[0008] Wherein, the mounting bracket includes a mounting ring, support legs arranged at equal angles on the outside of the mounting ring, a fixing seat arranged at the lower end of the support legs and a screw rod arranged at the upper end of the mounting ring, and the screw rod is provided with a mounting plate for installing the scissor lift.

[0009] Among them, the insertion rod includes a main rod inserted on the screw rod, a threaded section arranged at the lower end of the main rod for connecting the main rod with the sampling mechanism, and a rotating rod inserted at the upper end of the main rod, a connecting groove is provided at the upper end of the main rod, a socket for installing the rotating rod is provided on the main rod, and a through hole is provided on the screw rod for the main rod to pass through.

[0010] Wherein, a guiding block is arranged at an inner interval of the through hole, and a guiding groove for the guiding block to move is opened at a position of the main rod corresponding to the guiding block.

[0011] Among them, the adjustment mechanism includes a mounting frame, a rotating shaft passed through the mounting frame, a turntable arranged on one side of the rotating shaft, a winding roller mounted on the rotating shaft, a traction rope wound on the winding roller and a fixed sleeve arranged at the upper end of the traction rope, and the fixed sleeve is mounted on the rotating rod.

[0012] Wherein, a handle is arranged on the turntable.

[0013] Wherein, the rotating rod is provided with a limiting groove for placing the fixing sleeve.

[0014] Wherein, the sampling mechanism includes a top block connected to the threaded segment, a protective box arranged at the lower end of the top block, a connecting pipe arranged at the lower end of the protective box, a sampling tube arranged at the lower end of the connecting tube and a sampling assembly for sampling arranged in the connecting pipe, a storage bin is provided inside the sampling tube, and a fixing groove for installing the threaded segment is provided at the upper end of the top block.

[0015] Among them, the sampling assembly includes a motor arranged inside the protective box, a rotating shaft arranged at the power output end of the motor and passing through the connecting pipe, a spiral blade arranged on the rotating shaft and located inside the storage bin, and a drill bit arranged at the lower end of the rotating shaft and located below the sampling tube, and the spiral blade abuts against the inner wall of the storage bin.

[0016] Wherein, a vent hole is provided at the upper end of the connecting pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention controls the insertion and extraction movement of the insertion rod through the adjustment mechanism, and can accurately control the depth of the sampling mechanism inserted into the soil. This design allows the operator to accurately adjust the sampling depth according to actual needs, meet the survey requirements of different engineering projects, and improve the accuracy and pertinence of sampling. The operator can easily adjust the height of the adjustment mechanism by controlling the lifting and lowering of the scissor lift, and then conveniently perform the insertion and extraction operations of the insertion rod, which reduces labor intensity and improves work efficiency. The mounting bracket can provide stable support for the entire device, ensuring that the device will not affect the accuracy of sampling due to shaking or tilting during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention; Figure 2 It is a schematic structural diagram of an embodiment of the present invention in a front view; Figure 3 It is a schematic diagram of a top view of a structure in one embodiment of the present invention; Figure 4 It is a structural schematic diagram of the moving direction of the sampling mechanism in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the plug-in connection in one embodiment of the present invention; Figure 6 It is a structural schematic diagram of an adjustment mechanism in one embodiment of the present invention; Figure 7 It is a structural schematic diagram of a scissor lift driving an adjusting mechanism to move upward in one embodiment of the present invention; Figure 8 It is a structural schematic diagram of the connection between the sampling mechanism and the mounting bracket in one embodiment of the present invention; Fig. 9 It is a schematic diagram of the structure of explosion in one embodiment of the present invention; Fig.10 It is a schematic diagram of the structure of the guide block in the screw rod in one embodiment of the present invention; Fig.11 This is a schematic diagram of the structure of the connection between the plug rod and the screw rod in one embodiment of the present invention; Fig.12 It is a structural schematic diagram of a sampling mechanism in one embodiment of the present invention; Fig.13 Schematic diagram of the mounting bracket structure in one embodiment of the present invention.

[0019] In the figure: 1, mounting bracket; 11, mounting ring; 12, supporting leg; 13, fixing seat; 14, mounting plate; 141, column; 142, top plate; 14201, perforation; 15, push rod; 16, screw sleeve; 1601, rotating groove; 17, screw; 1701, through hole; 171, guide block; 2, sampling mechanism; 21, top block; 2101, fixing groove; 22, protective box; 23, connecting pipe; 2301, air vent; 24, sampling tube; 2401, storage Silo; 25. Sampling assembly; 251. Motor; 252. Rotating shaft; 253. Spiral blade; 254. Drill bit; 3. Insert rod; 31. Main rod; 3101. Guide groove; 3102. Socket; 3103. Connecting groove; 32. Threaded section; 33. Rotating rod; 3301. Limiting groove; 4. Adjusting mechanism; 41. Mounting frame; 42. Rotating shaft; 43. Turntable; 431. Handle; 44. Traction rope; 45. Fixing sleeve; 46. Winding roller; 5. Scissor lift. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-13 The present invention provides a technical solution: a soil layer surveying device for engineering surveying, comprising a sampling mechanism 2, a mounting bracket 1 detachably arranged outside the sampling mechanism 2 for supporting the sampling mechanism 2, and further comprising: The insertion rod 3 is inserted into the mounting bracket 1 and connected to the sampling mechanism 2, and is used to control the depth of the sampling mechanism 2 inserted into the soil; An adjustment mechanism 4, arranged on the mounting bracket 1 and connected to the insertion rod 3, for controlling the insertion and extraction movement of the insertion rod 3; The scissor lift 5 is arranged on the mounting bracket 1 and connected to the adjusting mechanism 4, and is used to control the up and down movement of the adjusting mechanism 4, and provide a moving space for the adjusting mechanism 4 to insert and remove the plugging rod 3. The scissor lift 5 is a prior art and will not be described in detail here.

[0022] It should be noted that during operation, when it is necessary to sample shallow soil, the staff can directly hold the sampling mechanism 2, and then turn on the power device on the sampling mechanism 2 to sample the soil. When the sampling depth changes, the sampling depth of the sampling mechanism 2 can be adjusted by the insertion rod 3 to meet the sampling requirements of soil at different depths during shallow sampling. When it is necessary to go deep underground to obtain deeper soil samples, the mounting bracket 1 is fixed to the upper end of the sampling point, and then the insertion rod 3 is inserted into the inside of the mounting bracket 1, and the sampling mechanism 2 is installed at the lower end of the insertion rod 3, and then a plurality of insertion rods 3 are assembled, and then the adjustment mechanism 4 is connected to the insertion rod 3, and the insertion rod 3 is driven by the adjustment mechanism 4 to move downward, thereby driving the sampling mechanism 2 to move downward, and sampling the deep soil The present invention performs sampling, and when the sampling mechanism 2 needs to be pulled out, the scissor lift 5 is driven to drive the adjusting mechanism 4 to move upward, and then the insertion rod 3 is pulled out from the underground in sections, and the insertion and withdrawal movement of the insertion rod 3 is controlled by the adjusting mechanism 4, so that the depth of the sampling mechanism 2 inserted into the soil can be accurately controlled. This design allows the operator to accurately adjust the sampling depth according to actual needs, meet the survey requirements of different engineering projects, and improve the accuracy and pertinence of sampling. The operator can easily adjust the height of the adjusting mechanism 4 by controlling the lifting and lowering of the scissor lift 5, and then conveniently perform the insertion and withdrawal operation of the insertion rod 3, which reduces labor intensity and improves work efficiency. The mounting bracket 1 can provide stable support for the entire device, ensuring that the device will not affect the accuracy of sampling due to shaking or tilting during the sampling process.

[0023] In one embodiment, the mounting bracket 1 includes a mounting ring 11, support legs 12 arranged at equal angles outside the mounting ring 11, a fixing seat 13 arranged at the lower end of the support legs 12, and a screw rod 17 arranged at the upper end of the mounting ring 11, and a mounting plate 14 for mounting the scissor lift 5 is arranged on the screw rod 17; A screw sleeve 16 is threadedly connected to the screw rod 17, and the mounting disk 14 is sleeved on the screw sleeve 16. A rotating groove 1601 for mounting the mounting disk 14 is provided on the screw sleeve 16. A push rod 15 is provided at a position above the supporting leg 12 of the mounting disk 14. The side of the push rod 15 away from the mounting disk 14 is connected to the supporting leg 12. A column 141 is fixed to the upper end of the mounting disk 14, and a top plate 142 for mounting the scissor lift 5 is fixed to the upper end of the column 141. A through hole 14201 is provided on the top plate 142 for moving the insertion rod 3.

[0024] This design, see Fig.13, rotate the screw sleeve 16, so that the screw sleeve 16 is threadedly connected with the screw rod 17, so that the screw sleeve 16 moves up on the screw rod 17, and the mounting plate 14 moves up with the screw sleeve 16, so that the push rod 15 pulls the support leg 12 to expand outward. After the installation angle of the support leg 12 is adjusted, stop rotating the screw sleeve 16, and fix the fixing seat 13 to the ground with bolts, which can effectively prevent the device from sinking or sliding, ensure the smooth progress of the survey work, and facilitate the expansion and contraction of the mounting bracket 1, so as to facilitate the storage of the mounting bracket 1, and the mounting ring 1 1, multiple support legs 12 are arranged at equal angles on the outside, which can provide a stable support foundation for the entire device. This multi-support point structure can disperse the gravity of the device, avoid the device from tilting or shaking during operation, ensure the stability of the sampling mechanism 2 when conducting soil layer survey, and improve the accuracy of sampling. The screw sleeve 16 is provided with a rotating groove 1601 for installing the mounting plate 14. The mounting plate 14 can rotate in the rotating groove 1601, ensuring that the mounting plate 14 moves with the screw sleeve 16 in height, so as to facilitate the adjustment of the mounting angle of the support legs 12.

[0025] In one embodiment, the insertion rod 3 includes a main rod 31 inserted into the screw rod 17, a threaded section 32 arranged at the lower end of the main rod 31 for connecting the main rod 31 with the sampling mechanism 2, and a rotating rod 33 inserted into the upper end of the main rod 31, a connecting groove 3103 is provided at the upper end of the main rod 31, a socket 3102 for installing the rotating rod 33 is provided on the main rod 31, and a through hole 1701 is provided on the screw rod 17 for the main rod 31 to pass through.

[0026] This design, see Figure 8 ,as well as Fig. 9 When the sampling depth of the sampling mechanism 2 is adjusted, the main rod 31 is inserted into the inside of the through hole 1701, and then the adjusting mechanism 4 is connected to the rotating rod 33 at the upper end of the main rod 31, and then the adjusting mechanism 4 drives the rotating rod 33 to move downward, so that the main rod 31 drives the sampling mechanism 2 to be inserted into the deep soil for soil sampling. The lower end of the main rod 31 is provided with a threaded section 32 for connecting with the sampling mechanism 2. This threaded connection method has the characteristics of stable connection and convenient disassembly. During installation, it is only necessary to screw the threaded section 32 with the corresponding threaded hole on the sampling mechanism 2 to achieve a firm connection. When disassembly is required, it can be easily separated by reverse rotation, which is convenient for replacing or repairing the sampling mechanism 2. A through hole 1701 is provided on the screw rod 17 for the main rod 31 to pass through. The size and shape of the through hole 1701 are adapted to the main rod 31, ensuring that the main rod 31 can slide smoothly on the screw rod 17, providing basic conditions for the up and down movement of the insertion rod 3, making the installation and operation of the insertion rod 3 smoother.

[0027] In one embodiment, a guide block 171 is disposed at intervals inside the through hole 1701 , and a guide groove 3101 for the guide block 171 to move is formed at a position of the main rod 31 corresponding to the guide block 171 .

[0028] This design, see Fig.10 ,as well as Fig.11 The cooperation between the guide block 171 and the guide groove 3101 provides precise positioning and guiding for the movement of the main rod 31 in the through hole 1701 of the screw rod 17. When the insertion rod 3 is inserted or pulled out, the guide block 171 moves in the guide groove 3101, limiting the radial shaking of the main rod 31 and ensuring that the main rod 31 can only move in a straight line along a predetermined direction, thereby avoiding deviation or tilt of the main rod 31 during the movement, thereby improving the accuracy and stability of the movement of the insertion rod 3.

[0029] In one embodiment, the adjustment mechanism 4 includes a mounting frame 41, a rotating shaft 42 passed through the mounting frame 41, a turntable 43 arranged on one side of the rotating shaft 42, a winding roller 46 mounted on the rotating shaft 42, a traction rope 44 wound on the winding roller 46, and a fixing sleeve 45 arranged at the upper end of the traction rope 44, and the fixing sleeve 45 is mounted on the rotating rod 33.

[0030] This design, see Figure 1-7 A turntable 43 is provided on one side of the rotating shaft 42. The operator only needs to rotate the turntable 43 to drive the rotating shaft 42 to rotate. The winding roller 46 is sleeved on the rotating shaft 42. As the rotating shaft 42 rotates, the winding roller 46 can retract and release the traction rope 44. By controlling the retracted and released length of the traction rope 44, the precise adjustment of the insertion and extraction movement of the insertion rod 3 can be achieved. The turntable 43 can be replaced by a motor. By controlling the rotation of the rotating shaft 42 by the motor, the adjustment efficiency of the insertion rod 3 can be further improved. When it is necessary to pull out the sampling mechanism 2 after sampling, the scissor lift 5 is started to drive the adjustment mechanism 4 to move up, and in the process of the adjustment mechanism 4 moving up, the traction rope 44 is unwound from the winding roller 46, and the length of the unwound is determined by the distance the mounting frame 41 moves up. When the mounting frame 41 moves up to the set height, the turntable 43 is rotated so that the winding roller 46 rewinds the traction rope 44, and in the process of rewinding, the sampling mechanism 2 is pulled out from the ground through the insertion rod 3.

[0031] In one embodiment, a handle 431 is disposed on the turntable 43 .

[0032] This design, see Figure 6The handle 431 provides an operator with a point of force for applying. When rotating the turntable 43, the operator can hold the handle 431 and drive the turntable 43 to rotate by swinging his arm. Compared with directly touching the surface of the turntable 43 with his hands, the handle 431 allows the operator to apply force more naturally, reducing the friction between the hand and the surface of the turntable 43, making the rotation operation easier and more labor-saving.

[0033] In one embodiment, a limiting groove 3301 for placing the fixing sleeve 45 is formed on the rotating rod 33 .

[0034] This design, see Figure 5 The limiting groove 3301 provides a clear installation position for the fixing sleeve 45. During the installation process, the operator can easily and accurately place the fixing sleeve 45 in the limiting groove 3301 to ensure that the relative position between the fixing sleeve 45 and the rotating rod 33 is accurate. This precise positioning helps to improve the installation accuracy of the entire adjustment mechanism 4 and ensure that the connection between the traction rope 44 and the rotating rod 33 is accurate, thereby ensuring that the adjustment mechanism 4 can work normally.

[0035] In one embodiment, the sampling mechanism 2 includes a top block 21 connected to the threaded segment 32, a protective box 22 arranged at the lower end of the top block 21, a connecting pipe 23 arranged at the lower end of the protective box 22, a sampling tube 24 arranged at the lower end of the connecting tube 23, and a sampling assembly 25 for sampling arranged in the connecting tube 23, a storage bin 2401 is provided inside the sampling tube 24, and a fixing groove 2101 for installing the threaded segment 32 is provided at the upper end of the top block 21.

[0036] This design, see Figure 1-9 ,as well as Fig.12 After the sampling tube 24 is inserted to the set sampling depth, the sampling assembly 25 is opened, and the collected sample is accurately sent to the storage bin 2401, thereby avoiding the loss and contamination of the sample and improving the accuracy and reliability of sampling. A fixing groove 2101 for installing the threaded section 32 is provided at the upper end of the top block 21, and the sampling mechanism 2 is connected to the threaded section 32 of the insertion rod 3 by a threaded connection. This connection method has the characteristics of firm connection and convenient disassembly, which can ensure that the sampling mechanism 2 maintains a stable connection with the insertion rod 3 during operation and is not easy to loosen or fall off. At the same time, it is convenient to replace or repair the sampling mechanism 2 when necessary. The protective box 22 is arranged at the lower end of the top block 21, which can protect some precision components inside the sampling mechanism 2 and prevent them from being damaged by external factors such as collision, dust, moisture, etc. during transportation, installation or operation, thereby extending the service life of the sampling mechanism 2 and ensuring the smooth progress of the sampling work.

[0037] In one embodiment, the sampling assembly 25 includes a motor 251 disposed inside the protective box 22, a rotating shaft 252 disposed at the power output end of the motor 251 and passing through the connecting pipe 23, a spiral blade 253 disposed on the rotating shaft 252 and located inside the storage bin 2401, and a drill bit 254 disposed at the lower end of the rotating shaft 252 and located below the sampling tube 24, and the spiral blade 253 abuts against the inner wall of the storage bin 2401.

[0038] This design, see Fig.12 The drill bit 254 is arranged at the lower end of the rotating shaft 252 and below the sampling tube 24. The motor 251 drives the rotating shaft 252 to rotate, thereby driving the drill bit 254 to rotate. The rotating drill bit 254 can quickly drill into the soil layer. When the rotating shaft 252 rotates, the spiral blade 253 will transport the soil sample drilled by the drill bit 254 upward along the spiral direction of the spiral blade 253 to the storage bin 2401. This spiral transport method can quickly and continuously transport the sample to the designated location, avoiding the accumulation and blockage of the sample during the sampling process, and further The sampling efficiency is improved. After the sampling is completed, the sampling mechanism 2 is taken out, and then the motor 251 is reversed, so that the rotating shaft 252 drives the spiral blade 253 to rotate in the opposite direction to discharge the soil sample inside the storage bin 2401. The design of the spiral blade 253 abutting against the inner wall of the storage bin 2401 enables the sample to be effectively restrained and guided during the transportation process, reducing the breakage and scattering of the sample during the transportation process, and ensuring the integrity of the sample. At the same time, the drilling method of the drill bit 254 can also minimize the disturbance to the surrounding soil, thereby improving the representativeness of the sample.

[0039] In one embodiment, a vent hole 2301 is formed at the upper end of the connecting tube 23 .

[0040] This design, see Fig. 9 ,as well as Fig.12 During the sampling process, when the spiral blade 253 transports the soil sample upward to the storage bin 2401, the air in the storage bin 2401 will be squeezed by the sample, causing the internal air pressure to increase. If there is no air vent 2301, the high-pressure air in the storage bin 2401 will create resistance to the continued transportation of the sample, and may even cause poor sample transportation or blockage. The presence of the air vent 2301 allows the air in the storage bin 2401 to be discharged in time, balancing the air pressure inside and outside the storage bin 2401, ensuring that the sample can be smoothly and continuously transported to the storage bin 2401, thereby improving the stability of the sampling process.

Claims

1. A soil layer surveying device for engineering surveying, comprising a sampling mechanism (2), and a mounting bracket (1) detachably arranged outside the sampling mechanism (2) for supporting the sampling mechanism (2), characterized in that: Also includes: An insertion rod (3) inserted into the mounting bracket (1) and connected to the sampling mechanism (2), and used to control the depth of insertion of the sampling mechanism (2) into the soil; An adjustment mechanism (4), arranged on the mounting bracket (1) and connected to the insertion rod (3), and used for controlling the insertion and removal movement of the insertion rod (3); A scissor lift (5) is arranged on the mounting bracket (1) and connected to the adjusting mechanism (4), and is used to control the upward and downward movement of the adjusting mechanism (4) to provide a moving space for the adjusting mechanism (4) to perform insertion and extraction movements on the insertion rod (3).

2. The soil layer surveying device for engineering surveying according to claim 1 is characterized in that: The mounting bracket (1) comprises a mounting ring (11), support legs (12) arranged at equal angles outside the mounting ring (11), a fixing seat (13) arranged at the lower end of the support leg (12), and a screw rod (17) arranged at the upper end of the mounting ring (11), wherein a mounting plate (14) for mounting the scissor lift (5) is arranged on the screw rod (17).

3. The soil layer surveying device for engineering surveying according to claim 2 is characterized in that: The insertion rod (3) comprises a main rod (31) inserted on the screw rod (17), a threaded section (32) arranged at the lower end of the main rod (31) for connecting the main rod (31) with the sampling mechanism (2), and a rotating rod (33) inserted at the upper end of the main rod (31), a connecting groove (3103) being provided at the upper end of the main rod (31), a socket (3102) for mounting the rotating rod (33) being provided on the main rod (31), and a through hole (1701) for the main rod (31) to pass through being provided on the screw rod (17).

4. The soil layer surveying device for engineering surveying according to claim 3 is characterized in that: A guide block (171) is provided at an interval inside the through hole (1701), and a guide groove (3101) for the guide block (171) to move is provided on the main rod (31) at a position corresponding to the guide block (171).

5. The soil layer surveying device for engineering surveying according to claim 3 is characterized in that: The adjustment mechanism (4) comprises a mounting frame (41), a rotating shaft (42) passing through the mounting frame (41), a rotating disk (43) arranged on one side of the rotating shaft (42), a winding roller (46) sleeved on the rotating shaft (42), a traction rope (44) wound on the winding roller (46), and a fixing sleeve (45) arranged on the upper end of the traction rope (44), wherein the fixing sleeve (45) is sleeved on the rotating rod (33).

6. The soil layer surveying device for engineering surveying according to claim 5, characterized in that: The rotating disk (43) is provided with a handle (431).

7. The soil layer surveying device for engineering surveying according to claim 5, characterized in that: The rotating rod (33) is provided with a limiting groove (3301) for accommodating the fixing sleeve (45).

8. The soil layer surveying device for engineering surveying according to claim 3 is characterized in that: The sampling mechanism (2) comprises a top block (21) connected to the threaded section (32), a protection box (22) arranged at the lower end of the top block (21), a connecting pipe (23) arranged at the lower end of the protection box (22), a sampling tube (24) arranged at the lower end of the connecting tube (23), and a sampling assembly (25) arranged in the connecting tube (23) for sampling, wherein a material storage bin (2401) is provided inside the sampling tube (24), and a fixing groove (2101) for mounting the threaded section (32) is provided at the upper end of the top block (21).

9. The soil layer surveying device for engineering surveying according to claim 8, characterized in that: The sampling assembly (25) comprises a motor (251) arranged inside the protective box (22), a rotating shaft (252) arranged at the power output end of the motor (251) and passing through the connecting pipe (23), a spiral blade (253) arranged on the rotating shaft (252) and located inside the storage bin (2401), and a drill bit (254) arranged at the lower end of the rotating shaft (252) and located below the sampling tube (24), wherein the spiral blade (253) abuts against the inner wall of the storage bin (2401).

10. The soil layer surveying device for engineering surveying according to claim 8, characterized in that: The upper end of the connecting pipe (23) is provided with a vent hole (2301).

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