Quality detection sampling device for engineering supervision

Abstract

The invention belongs to the technical field of engineering supervision, and particularly relates to a quality detection sampling device for engineering supervision, which comprises a sampling vehicle body, a sampling mechanism is arranged above the sampling vehicle body, the sampling mechanism is used for sampling soil at different depths and avoiding soil sample confusion, and the sampling device comprises a sampling drill bit for drilling into the soil for sampling, the device is provided with the sampling mechanism, multi-layer soil sampling from the surface layer to the deep layer can be completed at a time, multiple times of drilling and layered soil sampling are not needed, soil disturbance is reduced, the sampling efficiency is improved, and the sampling efficiency is improved. The original layering state of soil at each depth can be completely reserved, multiple groups of independent collecting cylinders are completely isolated, the problems that deep soil and surface soil are mixed and soil samples at different depths are mutually polluted are avoided, it is ensured that follow-up laboratory detection data can accurately reflect the real quality of the soil at each depth, and a reliable basis is provided for engineering quality evaluation.

Description

Technical Field

[0001] This invention belongs to the field of engineering supervision technology, and specifically relates to a quality inspection and sampling device for engineering supervision. Background Technology

[0002] In the field of engineering construction, soil quality testing is one of the core links in engineering supervision. Especially for key structures such as foundations and roadbeds, it is necessary to test the compaction, moisture content, bearing capacity, and particle composition of soil at different depths to determine whether the soil meets the design requirements and avoid engineering hazards such as building settlement and road collapse caused by substandard soil quality. With the continuous improvement of engineering construction standards, higher requirements have been put forward for soil testing.

[0003] Although existing soil sampling devices meet users' needs to a certain extent, they still have certain shortcomings in use. The specific problems are as follows: Traditional soil sampling devices mostly adopt a layered sampling mode of single drilling and single soil sampling, which requires drilling into the soil multiple times at a preset depth and repeating the operation until all target depths are sampled. Multiple drilling will cause repeated disturbance to the soil, destroying the original layered structure of the soil. During the second drilling, it is easy to mix with the loose surface soil, resulting in deep soil samples being contaminated by surface soil. The mixing of soil samples from different depths and the mixing of particles from different depths will mask the true differences in the particles of the layers, making the test data lose its reference value and unable to provide an accurate basis for engineering quality assessment.

[0004] To address the aforementioned issues, this application proposes a quality inspection sampling device for engineering supervision. Summary of the Invention

[0005] This invention provides a quality inspection and sampling device for engineering supervision, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quality inspection sampling device for engineering supervision, comprising a sampling vehicle body, a sampling mechanism disposed on the top of the sampling vehicle body, the sampling mechanism being used to achieve soil sampling at different depths and avoid soil sample confusion, including a sampling drill bit for drilling into the soil for sampling, the sampling drill bit having a hollow internal structure, the internal structure of the sampling drill bit having several sets of equidistantly arranged pushing cones arranged from top to bottom, a connecting rod being fixed between the multiple sets of pushing cones, a fixing seat being symmetrically arranged on one side of the internal structure of the sampling drill bit near each set of pushing cones, a pressure plate being fixed on the surface of the fixing seat, the top of the pressure plate having an arc-shaped structure, a collection cylinder being fixed inside the fixing seat, and soil shovels being symmetrically arranged on both sides of the collection cylinder.

[0007] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, a sampling motor providing driving force is provided on one side of the sampling drill bit, and a chain for transmitting power is connected to the sampling drill bit via a sprocket at the output end of the sampling motor. An electric push rod is provided directly above the sampling drill bit, and the output end of the electric push rod is fixedly connected to the surface of the topmost push cone.

[0008] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, the fixed base has symmetrically fixed limit ears on both sides of its surface, the sampling drill bit has a fixed limit rod inside its interior, and the limit ears are slidably connected to the surface of the limit rod. A spring that provides elastic restoring force is fixed between the pressure plate and the sampling drill bit.

[0009] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, the fixed base is internally rotatably connected to a bidirectional lead screw, both ends of which are fixed with moving gears. The sampling drill bit is internally fixed with two sets of fixed racks, and the moving gears are meshed with the fixed racks. The moving gears are symmetrically threaded with flipping screw blocks on both sides of their surfaces. The flipping screw blocks are hinged to a flipping connecting rod on their surfaces. The other end of the flipping connecting rod is hinged to a flipping hinge seat, which is hinged to the surface of the fixed base and fixedly connected to the soil shovel.

[0010] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, an adjustment mechanism is provided between the sampling vehicle body and the sampling mechanism. The adjustment mechanism is used to adjust the spatial position of the sampling drill bit to adapt to different sampling requirements. It includes a lifting frame for lifting adjustment, a lifting screw block is slidably connected inside the lifting frame, a transverse frame for lateral movement is fixed on the surface of the lifting screw block, a transverse screw block is slidably connected inside the transverse frame, and a connecting plate is fixed at the bottom of the transverse screw block.

[0011] In a preferred embodiment of the quality inspection sampling device for engineering supervision according to the present invention, the sampling drill bit is rotatably connected to the surface of the connecting plate, the sampling motor is fixed to the surface of the connecting plate, and the electric push rod is fixed to the surface of the transverse screw block by a bracket.

[0012] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, the lifting frame is internally rotatably connected to a lifting screw, the lifting screw block is threadedly connected to the surface of the lifting screw, the top of the lifting frame is fixedly connected to a lifting motor, and the output end of the lifting motor is fixedly connected to the top end of the lifting screw; the transverse frame is internally rotatably connected to a transverse screw, the transverse screw block is threadedly connected to the surface of the transverse screw, the transverse frame is fixedly connected to a transverse motor on one side, and the output end of the transverse motor is fixedly connected to one end of the transverse screw.

[0013] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, a support mechanism is installed on the surface of the sampling vehicle body. The support mechanism is used to ensure a stable connection between the device and the ground during the sampling process, so as to avoid tilting and shaking. The support mechanism includes a support plate of the support structure. A driven screw is rotatably connected between the two sides of the support plate and the sampling vehicle body. A threaded block is threadedly connected to the surface of the driven screw. A hinge rod is symmetrically hinged to both sides of the threaded block. A swing arm is hinged to the other end of the hinge rod, and the end of the swing arm is hinged to the surface of the sampling vehicle body.

[0014] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, a drive shaft is rotatably connected between the middle part of the support plate and the sampling vehicle body, a drive motor is fixed on the surface of the support plate, and the output end of the drive motor is fixedly connected to the top end of the drive shaft, a drive gear is fixed on the surface of the drive shaft, driven gears are symmetrically meshed on both sides of the surface of the drive gear, the driven gears are fixed on the surface of the driven lead screw, and a ground plate is fixed at the end of the swing arm.

[0015] As a preferred embodiment of the quality inspection sampling device for engineering supervision of the present invention, the sampling drill bit has a spiral soil sampling groove on its surface and a conical soil breaking head at its end. The lower surface of the grounding plate has anti-slip protrusions, the area of ​​the grounding plate is larger than the cross-sectional area of ​​the swing arm end, the bottom of the sampling vehicle body is provided with moving wheels, the moving wheels are universal wheels with braking function, and the surface of the sampling vehicle body is provided with a push handle, which is covered with an anti-slip rubber sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use.

[0017] 1. Equipped with a sampling mechanism, it can complete multi-layer soil sampling from the surface to the depth in one go, eliminating the need for multiple drilling and layered soil sampling. This not only reduces soil disturbance but also preserves the original layered state of the soil at each depth, meeting the core needs of engineering supervision for layered testing of foundations and roadbeds. Simultaneous sampling at multiple depths achieves full coverage of soil layers, meeting the professional testing needs of engineering supervision. Independent collection tubes isolate soil samples, avoiding cross-contamination and confusion. Multiple independent collection tubes are completely isolated, preventing the mixing of deep and surface soils and cross-contamination between soil samples from different depths. This ensures that subsequent laboratory test data accurately reflects the true quality of the soil at each depth, providing a reliable basis for engineering quality assessment.

[0018] 2. Equipped with an adjustment mechanism, it ensures that the sampling drill bit is accurately aligned with the preset sampling point, providing a fundamental guarantee for the accuracy of subsequent soil testing data. It enables the sampling drill bit to accurately align with different sampling points. When multiple sampling points are required in the same area, there is no need to repeatedly move the sampling vehicle. The point switching can be completed simply by lateral adjustment, which greatly improves the efficiency of batch sampling. The lifting screw is driven by the lifting motor to slowly move down, providing continuous and uniform downward pressure to the drill bit, ensuring that the drill bit always enters the soil stably in the vertical direction.

[0019] 3. Equipped with a support mechanism, it enables the simultaneous deployment and contact of multiple grounding plates. This distributes the overall weight of the sampling vehicle and the forces exerted during subsequent sampling operations evenly across multiple support points, forming a stable and reliable support structure. This counteracts the sampling reaction force, effectively enhancing the overall anti-overturning capability of the device and ensuring that the sampling drill bit always drills vertically. This provides a fundamental guarantee for subsequent precise stratified sampling. The large contact area design prevents the vehicle from sinking into soft soil, ensuring that the vehicle remains level during sampling. This protects operators from injury caused by tipping equipment or misaligned drill bits and ensures that the sampling drill bit is always aligned with the preset sampling point, providing an accurate sample basis for subsequent soil quality testing. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

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

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the sampling mechanism and the adjustment mechanism in this invention;

[0024] Figure 4 This is a cross-sectional view of the sampling drill bit in this invention;

[0025] Figure 5 In this invention Figure 4 Enlarged view of point A;

[0026] Figure 6 This is a schematic diagram of the structure of the jacking cone and the fixed base in this invention;

[0027] Figure 7 This is a schematic diagram of the structure of the pressure plate and the fixing seat in this invention;

[0028] Figure 8 This is a schematic diagram of the structure of the fixing base and the soil-collecting shovel in this invention;

[0029] Figure 9 This is a schematic diagram of the sampling vehicle body and support mechanism in this invention.

[0030] In the diagram: 1. Sampling vehicle body; 2. Sampling mechanism; 201. Sampling drill bit; 202. Sampling motor; 203. Chain; 204. Electric push rod; 205. Push cone; 206. Connecting rod; 207. Pressure plate; 208. Fixed seat; 209. Limiting ear; 210. Limiting rod; 211. Spring; 212. Double-acting lead screw; 213. Moving gear; 214. Fixed rack; 215. Tilting screw block; 216. Tilting connecting rod; 217. Tilting hinge seat; 218. Soil shovel; 219. Collection cylinder 3. Adjustment Mechanism; 301. Lifting Frame; 302. Lifting Screw; 303. Lifting Motor; 304. Lifting Screw Block; 305. Horizontal Shift Frame; 306. Horizontal Shift Screw; 307. Horizontal Shift Motor; 308. Horizontal Shift Screw Block; 309. Connecting Plate; 4. Support Mechanism; 401. Support Plate; 402. Drive Shaft; 403. Drive Motor; 404. Drive Gear; 405. Driven Gear; 406. Driven Screw; 407. Threaded Block; 408. Hinge Rod; 409. Swing Arm; 410. Grounding Plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Figures 1-9 As shown, the present invention provides a technical solution: a quality inspection sampling device for engineering supervision, comprising a sampling vehicle body 1, a sampling mechanism 2 disposed above the sampling vehicle body 1, the sampling mechanism 2 being used to achieve soil sampling at different depths and avoid soil sample confusion, including a sampling drill bit 201 for drilling into the soil for sampling, the sampling drill bit 201 having a hollow internal structure, and the internal structure of the sampling drill bit 201 having several sets of equidistant pushing cones 205 arranged from top to bottom, with connecting rods fixed between the multiple sets of pushing cones 205. 206. Inside the sampling drill bit 201, a fixed seat 208 is symmetrically arranged on one side near the push cone 205 of each group. A pressure plate 207 is fixed on the surface of the fixed seat 208. The top of the pressure plate 207 has an arc-shaped structure. A collection cylinder 219 is fixed inside the fixed seat 208. A soil shovel 218 is symmetrically arranged on both sides of the collection cylinder 219. The soil shovel 218 adopts an arc-shaped shovel surface design, which can completely wrap the soil when shoveling, reduce soil breakage, and ensure the integrity of the soil sample to meet the needs of subsequent tests.

[0033] A sampling motor 202 providing driving force is provided on one side of the sampling drill bit 201. The output end of the sampling motor 202 is connected to the sampling drill bit 201 via a chain 203 that transmits power through a sprocket. An electric push rod 204 is provided directly above the sampling drill bit 201, and the output end of the electric push rod 204 is fixedly connected to the surface of the topmost push cone 205.

[0034] Limiting ears 209 are symmetrically fixed on both sides of the surface of the fixed base 208. A limiting rod 210 is fixed inside the sampling drill bit 201, and the limiting ears 209 are slidably connected to the surface of the limiting rod 210. A spring 211 that provides elastic restoring force is fixed between the pressure plate 207 and the sampling drill bit 201.

[0035] The fixed base 208 is internally connected to a bidirectional lead screw 212, and both ends of the bidirectional lead screw 212 are fixed with moving gears 213. The sampling drill bit 201 is internally fixed with two sets of fixed racks 214, and the moving gears 213 are meshed with the fixed racks 214. The moving gears 213 are symmetrically threaded on both sides of their surfaces with flipping screw blocks 215. The flipping screw blocks 215 are hinged to the surface of their surfaces with flipping connecting rods 216. The other end of the flipping connecting rods 216 is hinged to a flipping hinge seat 217. The flipping hinge seat 217 is hinged to the surface of the fixed base 208 and is fixedly connected to the soil shovel 218. Since the drill bit is intact after a single drilling operation and the soil shovel is retracted, the inner wall of the sampling channel is smooth and does not collapse. It can be quickly sealed by grouting or other methods to reduce the potential impact of the channel on the engineering structure.

[0036] An adjustment mechanism 3 is provided between the sampling vehicle body 1 and the sampling mechanism 2. The adjustment mechanism 3 is used to adjust the spatial position of the sampling drill bit 201 to adapt to different sampling needs. It includes a lifting frame 301 for lifting adjustment. A lifting screw block 304 is slidably connected inside the lifting frame 301. A transverse frame 305 for lateral movement is fixed on the surface of the lifting screw block 304. A transverse screw block 308 is slidably connected inside the transverse frame 305. A connecting plate 309 is fixed at the bottom of the transverse screw block 308.

[0037] The sampling drill bit 201 is rotatably connected to the surface of the connecting plate 309, the sampling motor 202 is fixed to the surface of the connecting plate 309, and the electric push rod 204 is fixed to the surface of the transverse screw block 308 by a bracket.

[0038] The lifting frame 301 is internally rotatably connected to a lifting screw 302, and a lifting screw block 304 is threaded onto the surface of the lifting screw 302. A lifting motor 303 is fixed to the top of the lifting frame 301, and the output end of the lifting motor 303 is fixedly connected to the top end of the lifting screw 302. The transverse frame 305 is internally rotatably connected to a transverse screw 306, and a transverse screw block 308 is threaded onto the surface of the transverse screw 306. A transverse motor 307 is fixed to one side of the transverse frame 305, and the output end of the transverse motor 307 is fixedly connected to one end of the transverse screw 306. Horizontal and vertical adjustment and soil pressurization are all automatically completed by the motor. The operator only needs to start the corresponding motor at the control end. There is no need to bend over or squat to adjust the parts, or manually apply pressure, which greatly reduces physical exertion and can significantly reduce the labor intensity of the operator, avoiding operational errors caused by fatigue.

[0039] A support mechanism 4 is installed on the surface of the sampling vehicle body 1. The support mechanism 4 is used to ensure a stable connection between the device and the ground during the sampling process to prevent tilting and shaking. It includes a support plate 401 of the support structure. A driven screw 406 is rotatably connected between the two sides of the support plate 401 and the sampling vehicle body 1. A threaded block 407 is threadedly connected to the surface of the driven screw 406. A hinge rod 408 is symmetrically hinged to both sides of the threaded block 407. A swing arm 409 is hinged to the other end of the hinge rod 408, and the end of the swing arm 409 is hinged to the surface of the sampling vehicle body 1.

[0040] A drive shaft 402 is rotatably connected between the middle of the support plate 401 and the sampling vehicle body 1. A drive motor 403 is fixed on the surface of the support plate 401, and the output end of the drive motor 403 is fixedly connected to the top end of the drive shaft 402. A drive gear 404 is fixed on the surface of the drive shaft 402. Driven gears 405 are symmetrically meshed on both sides of the surface of the drive gear 404. Driven gears 405 are fixed on the surface of the driven screw 406. A ground plate 410 is fixed at the end of the swing arm 409. The stable support can reduce the vibration generated by the rotation of the sampling drill bit 201 to the vehicle body, thereby avoiding the soil sample from being layered or spilled during the collection process due to vibration. At the same time, the stable vehicle body state can also ensure that the soil shovel 218 moves smoothly when flipping to collect soil, reducing the deviation of soil volume caused by vibration, further ensuring the integrity and representativeness of the soil sample, and providing a reliable sample for accurate testing.

[0041] The sampling drill bit 201 has a spiral soil sampling groove on its surface and a conical soil breaking head at its end. The lower surface of the grounding plate 410 has anti-slip protrusions. The area of ​​the grounding plate 410 is larger than the cross-sectional area of ​​the end of the swing arm 409. The bottom of the sampling vehicle body 1 is equipped with a moving wheel, which is a universal wheel with a braking function. The surface of the sampling vehicle body 1 is equipped with a push handle, which is covered with an anti-slip rubber sleeve.

[0042] The working principle and usage process of this invention: The quality inspection sampling device for engineering supervision uses the sampling vehicle 1 as the basis for movement and support. Its bottom is equipped with universal wheels with braking function and anti-slip push handles on the surface, which can realize the flexible movement and fixed parking of the device, adapting to the sampling location requirements of different engineering sites.

[0043] After the device moves to the target sampling point, the drive motor 403 on the surface of the support plate 401 is activated. The output end of the drive motor 403 drives the drive shaft 402 fixed thereto to rotate. The drive gear 404 on the surface of the drive shaft 402 rotates synchronously, driving the driven gears 405 on both sides to rotate through meshing transmission. The driven gears 405 are fixed to the surface of the driven lead screw 406, thereby driving the two sets of driven lead screws 406 to rotate synchronously. The threaded block 407 threaded to the surface of the driven lead screw 406 moves axially due to the rotation of the driven lead screw 406. 7. The hinge rods 408, hinged on both sides, change angle as the threaded block 407 moves, pushing the swing arm 409, hinged to its other end, to swing around the end hinged to the sampling vehicle body 1. When the swing arm 409 swings, the grounding plate 410 fixed at its end moves downward or upward synchronously. When the grounding plate 410 moves downward to make close contact with the ground, the drive motor 403 stops. The anti-slip protrusions on the lower surface of the grounding plate 410 can enhance the friction with the ground, and its area is larger than the cross-sectional area of ​​the end of the swing arm 409, which can disperse the pressure of the device on the ground and prevent it from sinking into soft soil. At this time, the support mechanism 4 forms a stable support structure through multiple points of contact between the grounding plates 410 and the ground, which counteracts the reaction force generated by the sampling drill bit 201 drilling into the soil during subsequent sampling, and prevents the sampling vehicle body 1 from tilting or shifting.

[0044] Furthermore, after supporting the sampling vehicle body 1, the transverse motor 307 on one side of the transverse frame 305 is started. The output end of the transverse motor 307 drives the transverse lead screw 306, which is rotatably connected inside the transverse frame 305, to rotate. The transverse screw block 308, which is threaded on the surface of the transverse lead screw 306, generates a horizontal linear motion due to the rotation of the transverse lead screw 306 and the limiting effect of the transverse frame 305. The connecting plate 309 fixed at the bottom of the transverse screw block 308 moves horizontally synchronously with the transverse screw block 308, while the sampling drill bit 201 is rotatably connected to the surface of the connecting plate 309. The sampling mechanism 202 is fixed on the connecting plate 309. Therefore, the entire sampling mechanism 2 moves laterally with the connecting plate 309, realizing the horizontal position adjustment of the sampling drill bit 201. It can accurately align with different sampling points, so that when sampling at multiple points in the future, there is no need to move the sampling vehicle 1. It can be completed by lateral adjustment. After the horizontal position of the sampling drill bit 201 is adjusted, the lifting motor 303 on the top of the lifting frame 301 is started. The output end of the lifting motor 303 drives the lifting screw 302, which is rotatably connected inside the lifting frame 301, to rotate. The screw on the surface of the lifting screw 302... The lifting screw block 304, connected by a threaded connection, generates a vertical linear motion due to the rotation of the lifting screw 302 and the limiting action of the lifting frame 301. The transverse frame 305, fixed to the surface of the lifting screw block 304, rises and falls synchronously with the lifting screw block 304, thereby driving the overall lifting and falling of the sampling drill bit 201 and sampling motor 202 connected to the transverse frame 305. This adjusts the distance between the sampling drill bit 201 and the ground, preparing for subsequent drilling into different soil depths. After adjusting the position of the sampling drill bit 201, the sampling motor 202 is started. The output end of the sampling motor 202 is connected to a sprocket. The chain 203 drives the sampling drill bit 201 to rotate at high speed around its own axis. The conical soil-breaking head at the end of the sampling drill bit 201 can quickly break through the surface soil, while the spiral soil-taking groove on the surface transports the soil upward during rotation, providing guidance for the sampling drill bit 201 to drill downward, while reducing the resistance of the soil to the drill bit, achieving efficient soil entry. While the sampling drill bit 201 is rotating, the lifting screw block 304 is slowly moved downward by the lifting motor 303 of the adjusting mechanism 3, providing downward pressure to the sampling drill bit 201 and ensuring its stable drilling into the soil.

[0045] Furthermore, once the target depth is reached, the sampling motor 202 and the lifting motor 303 are paused. The electric push rod 204 directly above the sampling drill bit 201 is activated. The output end of the electric push rod 204 extends downwards, pushing the topmost push cone 205, which is fixed to it, downwards along the hollow structure inside the sampling drill bit 201. Multiple sets of push cones 205 are fixedly connected by connecting rods 206, so all push cones 205 move downwards synchronously. When the push cone 205 moves downwards to contact the top of the pressure plate 207, because the top of the pressure plate 207 has an arc-shaped structure, further downward movement of the push cone 205 will impact the pressure plate 207. 7. A compressive force is generated to both sides. The pressure plate 207 is fixed to the surface of the fixed seat 208. The fixed seat 208 is slidably connected to the surface of the limiting rod 210 inside the sampling drill bit 201 through the limiting ears 209 on both sides. Therefore, under the action of the pressure plate 207, the fixed seat 208 moves along the limiting rod 210 to the outside of the sampling drill bit 201 and compresses the spring 211 between the pressure plate 207 and the sampling drill bit 201 to store force for subsequent reset. When the fixed seat 208 moves, the bidirectional lead screw 212 rotatably connected inside it moves synchronously. The moving gears 213 at both ends of the bidirectional lead screw 212 are fixed to the fixed teeth inside the sampling drill bit 201. With the rack 214 meshing and the fixed rack 214 in a fixed position, the moving gear 213 rotates as it moves with the double-acting screw 212, thus causing the double-acting screw 212 to rotate. The rotating screw blocks 215, threaded on both sides of the double-acting screw 212, move away from each other due to the rotation of the double-acting screw 212. The rotating connecting rod 216, hinged to the surface of the rotating screw block 215, changes angle as the rotating screw block 215 moves, pushing the rotating hinge seat 217, hinged to its other end, to rotate around the end hinged to the fixed seat 208. The rotating hinge seat 217 is fixedly connected to the soil-removing shovel 218, thus the soil-removing shovel 218 rotates with the fixed seat 208. The sampling drill bit 201 is flipped over from the inside out into the soil, and the soil at the corresponding depth is shoveled into the collection cylinder 219 inside the fixed base 208, thus completing the collection of soil samples at that depth. The sampling drill bit 201 has multiple sets of equidistant push cones 205, fixed bases 208 and soil shovels 218 arranged from top to bottom. Each set corresponds to a sampling depth. Under the push of the electric push rod 204, multiple sets of soil shovels 218 can simultaneously complete the soil sampling action at different depths, and each set of collection cylinders 219 independently collects soil samples at the corresponding depth, effectively avoiding the mixing and confusion of soil samples at different depths, and meeting the needs of engineering supervision for layered soil quality testing.

[0046] After soil sample collection is completed, the output end of the control electric push rod 204 retracts upward, driving the push cone 205 to move upward, releasing the pressure on the pressure plate 207. Under the elastic restoring force of the spring 211, the pressure plate 207 drives the fixed seat 208 to move and reset along the limit rod 210 into the sampling drill bit 201. When the fixed seat 208 resets, the moving gear 213 moves and rotates in the opposite direction along the fixed rack 214, driving the bidirectional lead screw 212 to rotate in the opposite direction, and the flipping screw 215 moves towards each other, pulling the flipping screw through the flipping connecting rod 216. The hinge seat 217 and the soil shovel 218 are flipped and reset, retracting into the sampling drill bit 201 to prevent soil samples from falling off or being contaminated by surface soil when the sampling drill bit 201 is removed. Then, the lifting motor 303 is started to reverse, driving the entire sampling mechanism 2 to move upward and remove the sampling drill bit 201 from the soil. After the sampling drill bit 201 is completely removed from the soil, the electric push rod 204 is started again to push the top push cone 205, causing the soil shovel 218 to flip and open, so that soil samples of different depths can be taken out from the collection cylinder 219 and put into the testing container for subsequent quality testing.

[0047] It should be noted that if multiple sampling points are required in the same area, the above sampling steps can be repeated simply by adjusting the horizontal position of the sampling drill bit 201 using the adjustment mechanism 3.

[0048] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quality inspection sampling device for engineering supervision, comprising a sampling vehicle (1), characterized in that: A sampling mechanism (2) is provided above the sampling vehicle body (1). The sampling mechanism (2) is used to achieve soil sampling at different depths and avoid soil sample confusion. It includes a sampling drill bit (201) for drilling into the soil for sampling. The sampling drill bit (201) has a hollow structure inside. Several sets of equidistant pushing cones (205) are arranged inside the sampling drill bit (201) from top to bottom. A connecting rod (206) is fixed between multiple sets of pushing cones (205). A fixed seat (208) is symmetrically arranged on one side of the sampling drill bit (201) near each set of pushing cones (205). A pressure plate (207) is fixed on the surface of the fixed seat (208). The top of the pressure plate (207) has an arc-shaped structure. A collection cylinder (219) is fixed inside the fixed seat (208). Soil shovels (218) are symmetrically arranged on both sides of the collection cylinder (219).

2. The quality inspection and sampling device for engineering supervision according to claim 1, characterized in that: A sampling motor (202) providing driving force is provided on one side of the sampling drill bit (201). The output end of the sampling motor (202) is connected to the sampling drill bit (201) by a chain (203) that transmits power through a sprocket. An electric push rod (204) is provided directly above the sampling drill bit (201), and the output end of the electric push rod (204) is fixedly connected to the surface of the topmost push cone (205).

3. The quality inspection and sampling device for engineering supervision according to claim 1, characterized in that: The fixed base (208) has symmetrically fixed limit ears (209) on both sides of its surface. The sampling drill bit (201) has a fixed limit rod (210) inside it. The limit ears (209) are slidably connected to the surface of the limit rod (210). A spring (211) that provides elastic restoring force is fixed between the pressure plate (207) and the sampling drill bit (201).

4. The quality inspection and sampling device for engineering supervision according to claim 1, characterized in that: The fixed base (208) is internally rotatably connected to a two-way lead screw (212), and both ends of the two-way lead screw (212) are fixed with moving gears (213). The sampling drill bit (201) is internally fixed with two sets of fixed racks (214), and the moving gears (213) are meshed with the fixed racks (214). The moving gears (213) are symmetrically threaded with flipping screw blocks (215) on both sides of their surfaces. The flipping screw blocks (215) are hinged with flipping connecting rods (216) on their surfaces. The other end of the flipping connecting rods (216) is hinged with a flipping hinge seat (217). The flipping hinge seat (217) is hinged to the surface of the fixed base (208), and the flipping hinge seat (217) is fixedly connected to the soil shovel (218).

5. The quality inspection and sampling device for engineering supervision according to claim 2, characterized in that: An adjustment mechanism (3) is provided between the sampling vehicle body (1) and the sampling mechanism (2). The adjustment mechanism (3) is used to adjust the spatial position of the sampling drill bit (201) to adapt to different sampling requirements. It includes a lifting frame (301) for lifting adjustment. A lifting screw block (304) is slidably connected inside the lifting frame (301). A transverse frame (305) for lateral movement is fixed on the surface of the lifting screw block (304). A transverse screw block (308) is slidably connected inside the transverse frame (305). A connecting plate (309) is fixed at the bottom of the transverse screw block (308).

6. The quality inspection and sampling device for engineering supervision according to claim 5, characterized in that: The sampling drill bit (201) is rotatably connected to the surface of the connecting plate (309), the sampling motor (202) is fixed to the surface of the connecting plate (309), and the electric push rod (204) is fixed to the surface of the transverse screw block (308) by a bracket.

7. The quality inspection and sampling device for engineering supervision according to claim 6, characterized in that: The lifting frame (301) is internally rotatably connected to a lifting screw (302), and the lifting screw block (304) is threadedly connected to the surface of the lifting screw (302). The top of the lifting frame (301) is fixedly connected to a lifting motor (303), and the output end of the lifting motor (303) is fixedly connected to the top end of the lifting screw (302). The transverse frame (305) is internally rotatably connected to a transverse screw (306), and the transverse screw block (308) is threadedly connected to the surface of the transverse screw (306). The transverse frame (305) is fixedly connected to a transverse motor (307) on one side, and the output end of the transverse motor (307) is fixedly connected to one end of the transverse screw (306).

8. The quality inspection and sampling device for engineering supervision according to claim 1, characterized in that: The sampling vehicle body (1) is equipped with a support mechanism (4). The support mechanism (4) is used to ensure a stable connection between the device and the ground during the sampling process, so as to avoid tilting and shaking. It includes a support plate (401) of the support structure. A driven screw (406) is rotatably connected between the two sides of the support plate (401) and the sampling vehicle body (1). A threaded block (407) is threadedly connected to the surface of the driven screw (406). A hinge rod (408) is symmetrically hinged to both sides of the threaded block (407). A swing arm (409) is hinged to the other end of the hinge rod (408), and the end of the swing arm (409) is hinged to the surface of the sampling vehicle body (1).

9. The quality inspection and sampling device for engineering supervision according to claim 8, characterized in that: The support plate (401) is rotatably connected to the sampling vehicle body (1) by a drive shaft (402). A drive motor (403) is fixed on the surface of the support plate (401), and the output end of the drive motor (403) is fixedly connected to the top end of the drive shaft (402). A drive gear (404) is fixed on the surface of the drive shaft (402). Driven gears (405) are symmetrically meshed on both sides of the surface of the drive gear (404). The driven gears (405) are fixed on the surface of the driven lead screw (406). A ground plate (410) is fixed at the end of the swing arm (409).

10. The quality inspection and sampling device for engineering supervision according to claim 9, characterized in that: The sampling drill bit (201) has a spiral soil sampling groove on its surface and a conical soil breaking head at its end. The lower surface of the grounding plate (410) has anti-slip protrusions. The area of ​​the grounding plate (410) is larger than the cross-sectional area of ​​the end of the swing arm (409). The bottom of the sampling vehicle body (1) is provided with a moving wheel, which is a universal wheel with a braking function. The surface of the sampling vehicle body (1) is provided with a push handle, which is covered with an anti-slip rubber sleeve.

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