Sampling device and method for water conservancy project foundation detection

Abstract

The present invention discloses a sampling device and method for foundation detection of a water conservancy project, including a base and a sampling mechanism, wherein a driving mechanism, a swinging assembly and a knocking mechanism are arranged on the sampling mechanism, wherein the sampling mechanism includes a feeding sleeve and a sampling drill bit, wherein the feeding sleeve is sleeved on the outer end of the sampling drill bit and is rotatably connected thereto, wherein the driving mechanism includes a driving motor, a gear set, a transmission shaft and a sleeve, wherein the driving mechanism drives the sampling mechanism, the swinging assembly and the knocking mechanism, wherein the swinging assembly includes a slide, a cam and a clamping table, wherein the swinging assembly drives the sampling mechanism to swing downward, wherein the knocking mechanism includes a knocking ring and a limit column, and wherein the knocking mechanism is used for vibrating the sampling mechanism. The present invention has the advantages of high sampling efficiency and convenient operation, and solves the problems in the prior art that the sampling efficiency of foundation soil sampling equipment is low in a hard geological environment, the sampling equipment is complicated to operate, and the work efficiency is affected.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a sampling device and method for water conservancy project foundation detection. Background Art

[0002] Before foundation construction, it is necessary to sample the soil at the foundation. Soil sampling can be used to understand the physical and mechanical properties of the soil, such as water content, density, porosity, compressibility, etc. These properties have an important impact on the stability and bearing capacity of the foundation; soil sampling can determine the soil type and distribution of the foundation, thereby providing a basis for formulating appropriate foundation treatment plans. Soil sampling can evaluate the bearing capacity of the foundation to ensure that the building will not have problems such as foundation instability during design and use. Soil sampling can also timely understand changes in soil properties, guide the construction process, and avoid construction quality problems caused by changes in soil properties.

[0003] The detection of foundation of water conservancy project is an important part to ensure the quality and safety of the project. Traditional foundation detection methods usually rely on manual operation and use simple tools for sampling. This method has many shortcomings. Traditional sampling equipment can only rely on manual operation, and the sampling speed is slow and the efficiency is low. Especially when facing a large area of ​​detection area, it takes a long time. In recent years, with the development of science and technology, automation and intelligent technology have been increasingly applied to various engineering fields. Some new foundation detection sampling equipment has appeared on the market. They solve the problems existing in traditional sampling methods by introducing advanced mechanical transmission systems. However, the existing automated sampling equipment still has some limitations, such as the complexity of the equipment, high cost and complex operation. Therefore, a sampling device and method for water conservancy project foundation detection is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a sampling device and method for foundation detection of water conservancy projects, which has the advantages of high sampling efficiency and convenient operation, and solves the problems in the prior art that the sampling efficiency of foundation soil sampling equipment is low in hard geological environments, the operation of the sampling equipment is complicated, and the work efficiency is affected.

[0005] To achieve the above object, the present invention provides the following technical solutions: a sampling device for water conservancy project foundation detection, comprising a base and a sampling mechanism, wherein the sampling mechanism is provided with a driving mechanism, a swinging assembly and a knocking mechanism; The sampling mechanism comprises a feeding sleeve and a sampling drill, wherein the feeding sleeve is sleeved on the outer end of the sampling drill and is rotatably connected thereto; The driving mechanism includes a driving motor, a gear set, a transmission shaft and a sleeve, and the driving mechanism drives the sampling mechanism, the swing assembly and the knocking mechanism; The swing assembly includes a slide, a cam and a clamping table, and the swing assembly drives the sampling mechanism to swing downward; The knocking and vibrating mechanism comprises a knocking and vibrating ring and a limiting column, and the knocking and vibrating mechanism is used for vibrating the sampling mechanism.

[0006] As a preferred sampling device for foundation detection of water conservancy projects of the present invention, a hanger is provided at the upper end of the base, a slidably connected motor frame is provided on the hanger, the drive motor is fixedly mounted on the motor frame, a center shaft is provided on the top of the sampling drill bit, the center shaft is keyed to the output shaft of the drive motor, an external thread is provided on the outer side of the feed sleeve, a screw hole is provided at the center of the slide, the feed sleeve is inserted into the screw hole and is threadedly connected to the slide, the gear set includes a first gear, a second gear, a third gear and a fourth gear, the first gear is fixedly mounted on the output shaft of the drive motor, the lower end face of the transmission shaft mounted on the motor frame is rotatably connected thereto, the second gear and the third gear are mounted on the transmission shaft, the fourth gear is fixedly mounted on the top of the feed sleeve, the first gear is meshed with the second gear for transmission, and the third gear is meshed with the fourth gear for transmission.

[0007] As a preferred sampling device for foundation detection of water conservancy projects of the present invention, a cross shaft is provided at the bottom of the transmission shaft, a cross hole matching with the cross shaft is provided at the center of the sleeve, the cross shaft passes through the cross hole and is slidably connected with the sleeve, the sleeve passes through the slide and is rotatably connected with it, a sliding hole matching with the slide is provided at the center of the base, the slide is installed in the sliding hole and is slidably connected with the base, the cam is fixedly installed on the top of the outer end surface of the sleeve, the clamping platform is fixedly installed on the upper end surface of the base, a slot is provided on the side of the clamping platform, and the edge of the cam is inserted into the slot and is slidably connected with the slide.

[0008] As a preferred sampling device for water conservancy project foundation detection of the present invention, the cam is an annular thin sheet, the angle between the axis of the cam and the axis of the sleeve is α, 5°≤α≤10°, and universal ball bearings are arranged at the top and top of the slot.

[0009] As a preferred sampling device for foundation detection of water conservancy projects in the present invention, the knocking ring includes a mounting ring, an elastic rod and a counterweight ball, the mounting ring is fixedly mounted on the bottom of the outer end surface of the sleeve, the counterweight ball is fixedly mounted on the outer end of the elastic rod, the elastic rod is evenly mounted on the outer end surface of the mounting ring, the limit column is mounted on the lower end surface of the slide, and the center distance between the limit column and the sleeve is less than the length of the elastic rod.

[0010] As a preferred sampling device for water conservancy project foundation detection of the present invention, the knocking ring is rotatably connected to the sleeve via a one-way bearing, a rotatably connected ring is provided on the limit column, and an annular groove cooperating with a counterweight ball is provided on the side of the ring.

[0011] As a preferred sampling device for foundation detection of water conservancy projects of the present invention, a sampling port and an overflow port are arranged on the side of the feeding sleeve, a detachable sampling bottle is arranged in the sampling port, a partition is arranged in the feeding sleeve, a cutting blade is arranged on the bottom edge of the feeding sleeve, and a spiral blade is arranged on the side of the sampling drill bit.

[0012] As a preferred sampling device for foundation detection of water conservancy projects in the present invention, the outer end face of the sampling bottle is provided with an external thread, the sampling bottle is inserted into the sampling port and threadedly connected with the feed sleeve, a limiting flange is provided at the bottom of the sampling bottle, a diaphragm is provided on the inner end face of the limiting flange, and a "*"-shaped slit is provided at the center of the diaphragm.

[0013] As a preferred sampling device for water conservancy project foundation detection of the present invention, counterweight frames are provided on the left and right sides of the base.

[0014] A sampling method for water conservancy project foundation detection comprises the following steps: Step 1: Equipment installation and inspection: fix the base above the sampling point and check whether each device is operating normally; Step 2: Collect samples. The driving mechanism drives the sampling mechanism to work and drill holes in the foundation. At the same time, the driving mechanism drives the swing component to operate, so that the swing component drives the sampling mechanism to swing up and down, thereby improving the impact effect on the foundation and increasing the drilling sampling rate. Step 3, equipment recovery, the driving mechanism operates in reverse to make the sampling mechanism recover upwards, and at the same time, the swing mechanism drives the sampling mechanism to swing, so that the sample in the feeding sleeve is shaken off. During the recovery process, the driving mechanism will also drive the knocking and vibrating mechanism to vibrate the sampling mechanism to increase the discharge rate of the sampling mechanism. Finally, the recovery equipment is thoroughly cleaned.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the sampling drill bit to rotate through a driving mechanism, so that the sampling drill bit can quickly penetrate the foundation material and improve the drilling speed. At the same time, the feed sleeve can slow down and rotate under the cooperation of the gear group, and feed slowly and forcefully. The sampling mechanism is swung up and down through the swing component. This design increases the crushing ability of the foundation material. When the sampling drill bit swings up and down while rotating, it can effectively destroy the structure of the foundation material, making the hard stratum easier to be crushed, thereby speeding up the sampling speed. The combination of rotation and swinging not only improves the drilling efficiency, but also can better adapt to strata of different hardness, so that the equipment can maintain a high working efficiency under various geological conditions.

[0016] 2. The design of the knocking and vibration mechanism of the present invention can help clear the soil sample in the feed sleeve by vibrating during the recovery process of the sampling mechanism. This design reduces the adhesion of the soil sample in the feed sleeve, so that the equipment can be quickly and thoroughly emptied after each sampling, ensuring the accuracy and independence of each sampling. The one-button sampling and recovery design simplifies the operating process, so that even non-professionals can quickly master the use of the equipment, reduce the difficulty of operating the equipment, and improve the flexibility of sampling work. The automated knocking and vibration function reduces the time and labor intensity of manual cleaning, allowing the operator to concentrate on other more important tasks, thereby improving overall work efficiency.

[0017] 3. The present invention uses a detachable sampling bottle design built into the sampling port to make sample collection and replacement very simple and quick, and can be completed without complicated tools, which not only saves time but also reduces the possibility of operational errors. The diaphragm design set at the bottom of the sampling bottle effectively prevents the sample from leaking out of the sampling bottle during the replacement process, thereby ensuring the integrity and representativeness of the sample, which is crucial for subsequent laboratory analysis. In this way, it is ensured that high-quality samples can be obtained each time sampling is taken, thereby improving the reliability of the test results, which is of great significance to the quality control of engineering projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle; Figure 4 It is a front cross-sectional view of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point C in the middle; Figure 6 is a side sectional view of the present invention; Figure 7 An exploded view of the present invention; Figure 8 It is a schematic diagram of the structure of the sampling bottle of the present invention; Fig. 9 It is a schematic diagram of the base structure of the present invention; Fig.10 It is a schematic diagram of the slide structure of the present invention; Fig.11 A bottom view of the present invention; Fig.12 It is a schematic diagram of the overall structure of the second viewing angle of the present invention; Fig.13 For the present invention Fig.12 Enlarged view of point D in the middle.

[0019] In the figure: 1. base; 101. hanger; 1011. slideway; 102. motor frame; 103. counterweight frame; 104. slide hole; 2. sampling mechanism; 201. sampling drill; 2011. center axis; 2012. spiral blade; 202. feed sleeve; 2021. sampling port; 2022. overflow port; 2023. partition; 203. sampling bottle; 2031. limit flange; 2032. diaphragm; 2033. slit; 3. driving mechanism; 301. driving motor; 302. gear set; 3021. first gear Wheel; 3022, second gear; 3023, third gear; 3024, fourth gear; 303, transmission shaft; 3031, cross shaft; 304, bushing; 3041, cross hole; 4, swing assembly; 401, slide; 4011, screw hole; 4012, shaft hole; 402, cam; 403, clamping table; 4031, slot; 4032, universal ball; 5, knocking mechanism; 501, knocking ring; 5011, mounting ring; 5012, elastic rod; 5013, counterweight ball; 502, limit column; 5021, sleeve ring. DETAILED DESCRIPTION

[0020] Example 1 See also Figure 1-Figure 13 , a sampling device for water conservancy project foundation detection, comprising a base 1 and a sampling mechanism 2, wherein the sampling mechanism 2 is provided with a driving mechanism 3, a swinging assembly 4 and a knocking mechanism 5; The sampling mechanism 2 includes a feeding sleeve 202 and a sampling drill 201, wherein the feeding sleeve 202 is sleeved on the outer end of the sampling drill 201 and is rotatably connected thereto; The driving mechanism 3 includes a driving motor 301, a gear set 302, a transmission shaft 303 and a sleeve 304. The driving mechanism 3 drives the sampling mechanism 2, the swing assembly 4 and the knocking mechanism 5. The swing assembly 4 includes a slide 401, a cam 402 and a clamping platform 403, and the swing assembly 4 drives the sampling mechanism 2 to swing downward; The knocking and vibrating mechanism 5 includes a knocking and vibrating ring 501 and a limiting column 502 . The knocking and vibrating mechanism 5 is used to vibrate the sampling mechanism 2 .

[0021] When in use, the base 1 is fixed above the sampling point, and the sampling mechanism 2 is driven by the driving component to perform excavation and sampling. At the same time, the driving mechanism 3 will also drive the swinging component 4 to move, so that the swinging component 4 drives the sampling component to swing up and down, thereby improving the excavation efficiency. When recovering, the driving mechanism 3 drives the equipment to flip over and recover, and at the same time drives the vibration mechanism to vibrate the feed sleeve 202, thereby vibrating and discharging the soil sample in the feed sleeve 202.

[0022] Furthermore, a hanger 101 is provided at the upper end of the base 1, a slide groove 1011 is provided on the side of the hanger 101, a motor frame 102 is provided on the hanger 101, the motor frame 102 is inserted into the slide groove 1011 and is slidably connected to the hanger 101, the drive motor 301 is fixedly installed on the motor frame 102, a central shaft 2011 is provided on the top of the sampling drill bit 201, the central shaft 2011 is keyed to the output shaft of the drive motor 301, an external thread is provided on the outer side of the feed sleeve 202, a screw hole 4011 is provided at the center of the slide 401, and the feed sleeve 202 is inserted into the screw hole 4011. Threadedly connected to the slide 401, the gear set 302 includes a first gear 3021, a second gear 3022, a third gear 3023 and a fourth gear 3024. The first gear 3021 is fixedly mounted on the output shaft of the drive motor 301, and the transmission shaft 303 is mounted on the lower end surface of the motor frame 102 and is rotatably connected thereto. The second gear 3022 and the third gear 3023 are mounted on the transmission shaft 303, and the fourth gear 3024 is fixedly mounted on the top of the feed sleeve 202. The first gear 3021 is meshed with the second gear 3022 for transmission, and the third gear 3023 is meshed with the fourth gear 3024 for transmission.

[0023] The sampling drill bit 201 is driven to rotate by the driving motor 301, and the shaft sleeve 304 is driven to rotate by the gear set 302, so that the sampling drill bit 201 rotates to break and drill holes in the foundation. The shaft sleeve 304 is gradually fed downward under the action of the movement of the screw rod, thereby increasing the sampling depth. The sliding connection of the motor frame 102 structure allows the driving mechanism 3 to slide along with the sampling mechanism 2.

[0024] Furthermore, a cross shaft 3031 is provided at the bottom of the transmission shaft 303, a cross hole 3041 matching with the cross shaft 3031 is provided at the center of the sleeve 304, the cross shaft 3031 passes through the cross hole 3041 and is slidably connected with the sleeve 304, an axial hole 4012 is provided on the slide 401, the sleeve 304 passes through the axial hole 4012 on the slide 401 and is rotatably connected with it, a sliding hole 104 matching with the slide 401 is provided at the center of the base 1, the slide 401 is installed in the sliding hole 104 and is slidably connected with the base 1, the cam 402 is fixedly installed on the top of the outer end surface of the sleeve 304, the clamping platform 403 is fixedly installed on the upper end surface of the base 1, and a slot 4031 is provided on the side of the clamping platform 403, and the edge of the cam 402 is inserted into the slot 4031 and is slidably connected with the slide 401.

[0025] The driving motor 301 drives the transmission shaft 303 to rotate, and the cross shaft 3031 at the bottom of the transmission shaft 303 cooperates with the shaft sleeve 304 to drive the shaft sleeve 304 to rotate, and ensures that the cross shaft 3031 can slide along the axial direction, so that the driving mechanism 3 can stably transmit the shaft sleeve 304 during the downward feeding process, and the shaft sleeve 304 drives the cam 402 to rotate, so that the cam 402 cooperates with the clamping table 403 to drive the slide table 401 to swing back and forth up and down, giving the sampler mechanism a longitudinal impact, thereby improving the drilling effect.

[0026] Furthermore, the cam 402 is an annular thin sheet, the angle between the axis of the cam 402 and the axis of the sleeve 304 is α, 5°≤α≤10°, and the top and top of the slot 4031 are provided with universal balls 4032 .

[0027] Due to the inclined setting of the cam 402, the edge of the cam 402 has a certain vertical height difference. Therefore, when the cam 402 rotates, it is constrained by the slot 4031, driving the slide 401 to move up and down, thereby driving the sampling mechanism 2 to swing up and down, forming an impact drilling effect, and reducing the friction between the cam 402 and the clamping table 403 through the universal ball 4032, thereby reducing the wear of the cam 402 and improving the service life of the equipment.

[0028] Furthermore, the knocking ring 501 includes a mounting ring 5011, an elastic rod 5012 and a counterweight ball 5013. The mounting ring 5011 is fixedly mounted on the bottom of the outer end surface of the sleeve 304, the counterweight ball 5013 is fixedly mounted on the outer end of the elastic rod 5012, the elastic rod 5012 is evenly mounted on the outer end surface of the mounting ring 5011, and the limit column 502 is mounted on the lower end surface of the slide 401. The center distance between the limit column 502 and the sleeve 304 is smaller than the length of the elastic rod 5012.

[0029] The elastic rod 5012 is blocked by the limiting rod, causing it to undergo elastic deformation to store energy. When the deformation of the elastic rod 5012 is large enough, the elastic rod 5012 passes over the limiting column 502, quickly releasing the elastic potential energy, causing the counterweight ball 5013 to hit the outer end surface of the feed sleeve 202 at high speed, thereby vibrating the feed sleeve 202 and shaking off the soil blocks inside the feed sleeve 202.

[0030] Furthermore, the knocking ring 501 is rotatably connected to the shaft sleeve 304 via a one-way bearing, and a rotatably connected collar 5021 is provided on the limiting column 502 , and an annular notch cooperating with the weighted ball 5013 is provided on the side surface of the collar 5021 .

[0031] Through the one-way bearing, the knocking ring 501 only knocks the sampling mechanism 2 during the recovery process, and does not knock the sampling mechanism 2 during the feeding process. By providing a rotatably connected ring 5021 structure on the outer side of the limit column 502, the friction between the limit column 502 and the elastic rod 5012 is reduced, thereby reducing the wear of the elastic rod 5012 and improving the service life of the equipment.

[0032] Furthermore, a sampling port 2021 and an overflow port 2022 are provided on the side of the feeding sleeve 202, a detachable sampling bottle 203 is provided in the sampling port 2021, a partition 2023 is provided in the feeding sleeve 202, a cutting blade is provided on the bottom edge of the feeding sleeve 202, and a spiral blade 2012 is provided on the side of the sampling drill bit 201.

[0033] When the broken bricks rotate, the spiral blade 2012 lifts the soil to the sampling port 2021 and presses the sample into the sampling bottle 203. The excess soil is discharged from the overflow port 2022. A cutting blade is set at the bottom of the feeding sleeve 202 to improve the sharpness of the bottom edge of the feeding sleeve 202, thereby reducing the resistance of the feeding sleeve 202 when feeding.

[0034] Furthermore, an external thread is provided on the outer end face of the sampling bottle 203, and the sampling bottle 203 is inserted into the sampling port 2021 and threadedly connected to the feeding sleeve 202. A limiting flange 2031 is provided at the bottom of the sampling bottle 203, and a diaphragm 2032 is provided on the inner end face of the limiting flange 2031, and a "*"-shaped slit 2033 is provided at the center of the diaphragm 2032.

[0035] The sample entering the sampling bottle 203 is intercepted by the diaphragm 2032, so that the soil sample will not fall out easily after entering the sampling bottle 203, which is convenient for the testers to carry for testing. The bottom of the sampling bottle 203 is also provided with an external thread, and a sealing cover can be added to improve the sealing of the sampling bottle 203.

[0036] Furthermore, counterweight frames 103 are provided on the left and right sides of the base 1 .

[0037] By adding heavy objects such as stones, sunken wood or other heavy objects into the counterweight frame 103, the weight of the device base 1 is increased, thereby improving the stability of the device.

[0038] Example 2 See also Figure 1-Figure 13 , a sampling method for water conservancy project foundation detection, comprising the following steps: Step 1, fix the base 1 of the equipment above the designated sampling point. The base 1 can be firmly fixed to the ground by an anchoring device to ensure that the equipment will not shift due to vibration during operation, and to ensure that the drive motor 301, gear set 302, transmission shaft 303, sleeve 304 and other components are in good condition, especially to check whether the gear meshing is normal, whether the connection between the transmission shaft 303 and the sleeve 304 is tight, to avoid failures during operation, adjust the counterweight on the counterweight frame 103 according to the on-site environment, ensure that the equipment has sufficient stability, and prevent the equipment from tilting or tipping over due to vibration during sampling; Step 2, collect samples, start the drive motor 301, drive the motor 301 drill bit to rotate, start drilling the foundation, and at the same time drive the transmission shaft 303 to rotate through the gear set 302, thereby driving the feed sleeve 202 to rotate and feed. While the drive motor 301 is running, the sampling mechanism 2 is swung up and down through the swing component 4. Specifically, the motor drives the shaft sleeve 304 to rotate through the transmission shaft 303, and the cam 402 on the shaft sleeve 304 interacts with the slot 4031 of the clamping table 403 to make the slide table 401 moves up and down, driving the sampling mechanism 2 to produce an up and down swing effect, thereby enhancing the crushing ability of the foundation material. While swinging, the sampling depth is gradually deepened by continuously advancing the feeding sleeve 202 in the foundation. As the sampling drill bit 201 rotates, the spiral blade 2012 pushes the crushed soil upward along the spiral groove until it reaches the sampling port 2021 of the feeding sleeve 202. The soil reaching the vicinity of the sampling port 2021 will be pressed into the sampling bottle 203 in the feeding sleeve 202. The sampling bottle 203 is fixed at the sampling port 2021 of the feeding sleeve 202 by a threaded connection to ensure that the soil sample can enter the bottle smoothly. The excess soil that cannot completely enter the sampling bottle 203 will be discharged through the overflow port 2022 on the feeding sleeve 202 to ensure that only an appropriate amount of soil sample is contained in the sampling bottle 203; Step 3, after the sampling is completed, the driving mechanism 3 runs in the reverse direction, driving the sampling mechanism 2 to recover upward. At this time, the swing component 4 still works, causing the sampling mechanism 2 to continue to swing up and down, which helps to loosen the soil sample in the feed sleeve 202. During the recovery of the sampling mechanism 2, the knocking and vibrating mechanism 5 starts to work, and the knocking and vibrating ring 501 is connected to the sleeve 304 through a one-way bearing. The feed sleeve 202 will only be vibrated when the sampling mechanism 2 is recovered. The counterweight ball 5013 stores energy through the elastic rod 5012 and releases energy at the right time, hitting the outer wall of the feed sleeve 202, thereby vibrating the soil sample out of the feed sleeve 202. After the recovery is completed, the equipment should be thoroughly cleaned, especially the residual soil samples inside and outside the sampling drill bit 201, the feed sleeve 202, and the knocking and vibrating mechanism 5 should be removed to ensure that the equipment is in good condition for the next use.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for detecting foundations of a water conservancy project, comprising a base (1) and a sampling mechanism (2), characterized in that: The sampling mechanism (2) is provided with a driving mechanism (3), a swinging assembly (4) and a knocking mechanism (5); The sampling mechanism (2) comprises a feeding sleeve (202) and a sampling drill bit (201); the feeding sleeve (202) is sleeved on the outer end of the sampling drill bit (201) and is rotatably connected thereto; The driving mechanism (3) comprises a driving motor (301), a gear set (302), a transmission shaft (303) and a shaft sleeve (304), and the driving mechanism (3) drives the sampling mechanism (2), the swing assembly (4) and the knocking mechanism (5); The swing assembly (4) comprises a slide table (401), a cam (402) and a clamping table (403), and the swing assembly (4) drives the sampling mechanism (2) to swing downward; The knocking and vibrating mechanism (5) comprises a knocking and vibrating ring (501) and a limiting column (502), and the knocking and vibrating mechanism (5) is used to vibrate the sampling mechanism (2).

2. A sampling device for water conservancy project foundation detection as claimed in claim 1, characterized in that: The upper end of the base (1) is provided with a hanger (101), a motor frame (102) slidably connected is provided on the hanger (101), the drive motor (301) is fixedly mounted on the motor frame (102), a central shaft (2011) is provided on the top of the sampling drill bit (201), the central shaft (2011) is keyed to the output shaft of the drive motor (301), an external thread is provided on the outer side of the feed sleeve (202), a screw hole (4011) is provided at the center of the slide (401), the feed sleeve (202) is inserted into the screw hole (4011) and is threadedly connected to the slide (401), and the gear set (302) comprises a first A gear (3021), a second gear (3022), a third gear (3023) and a fourth gear (3024), wherein the first gear (3021) is fixedly mounted on the output shaft of the driving motor (301), the transmission shaft (303) is mounted on the lower end surface of the motor frame (102) and is rotatably connected thereto, the second gear (3022) and the third gear (3023) are mounted on the transmission shaft (303), the fourth gear (3024) is fixedly mounted on the top of the feeding sleeve (202), the first gear (3021) is meshed with the second gear (3022) for transmission, and the third gear (3023) is meshed with the fourth gear (3024) for transmission.

3. The sampling device for water conservancy project foundation detection according to claim 1, characterized in that: A cross shaft (3031) is provided at the bottom of the transmission shaft (303), a cross hole (3041) matching with the cross shaft (3031) is provided at the center of the shaft sleeve (304), the cross shaft (3031) passes through the cross hole (3041) and is slidably connected to the shaft sleeve (304), the shaft sleeve (304) passes through the slide table (401) and is rotatably connected thereto, a slide hole (104) matching with the slide table (401) is provided at the center of the base (1), the slide table (401) is installed in the slide hole (104) and is slidably connected to the base (1), the cam (402) is fixedly installed at the top of the outer end surface of the shaft sleeve (304), the clamping table (403) is fixedly installed on the upper end surface of the base (1), a slot (4031) is provided on the side of the clamping table (403), and the edge of the cam (402) is inserted into the slot (4031) and is slidably connected to the slide table (401).

4. A sampling device for water conservancy project foundation detection as claimed in claim 3, characterized in that: The cam (402) is an annular thin sheet, the angle between the axis of the cam (402) and the axis of the shaft sleeve (304) is α, 5°≤α≤10°, and the top and top of the slot (4031) are provided with universal balls (4032).

5. The sampling device for water conservancy project foundation detection according to claim 1, characterized in that: The knocking ring (501) comprises a mounting ring (5011), an elastic rod (5012) and a weighted ball (5013); the mounting ring (5011) is fixedly mounted on the bottom of the outer end surface of the shaft sleeve (304); the weighted ball (5013) is fixedly mounted on the outer end of the elastic rod (5012); the elastic rod (5012) is evenly mounted on the outer end surface of the mounting ring (5011); the limiting column (502) is mounted on the lower end surface of the slide table (401); and the center distance between the limiting column (502) and the shaft sleeve (304) is smaller than the length of the elastic rod (5012).

6. The sampling device for water conservancy project foundation detection according to claim 1, characterized in that: A sampling port (2021) and an overflow port (2022) are provided on the side of the feeding sleeve (202); a detachable sampling bottle (203) is provided in the sampling port (2021); a partition (2023) is provided in the feeding sleeve (202); a cutting blade is provided on the bottom edge of the feeding sleeve (202); and a spiral blade (212) is provided on the side of the sampling drill bit (201).

7. A sampling device for water conservancy project foundation detection as claimed in claim 6, characterized in that: The outer end surface of the sampling bottle (203) is provided with an external thread, the sampling bottle (203) is inserted into the sampling port (2021) and is threadedly connected to the feeding sleeve (202), a limiting flange (2031) is provided at the bottom of the sampling bottle (203), a diaphragm (2032) is provided at the inner end surface of the limiting flange (2031), and a slit (2033) is provided at the center of the diaphragm (2032).

8. The sampling device for water conservancy project foundation detection according to claim 1, characterized in that: Counterweight frames (103) are provided on the left and right sides of the base (1).

9. A sampling method for water conservancy project foundation detection, applicable to a sampling device for water conservancy project foundation detection as described in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Equipment installation and inspection: Fix the base (1) above the sampling point and check whether each device is operating normally; Step 2, collecting samples, the driving mechanism (3) drives the sampling mechanism (2) to work, and drives the foundation to drill holes. At the same time, the driving mechanism (3) drives the swing component (4) to operate, so that the swing component (4) drives the sampling mechanism (2) to swing up and down, thereby improving the impact effect on the foundation and improving the drilling sampling rate; Step 3, equipment recovery, by driving the driving mechanism (3) to reversely operate, so that the sampling mechanism (2) is recovered upwards, and at the same time, the swinging mechanism drives the sampling mechanism (2) to swing, so that the sample in the feeding sleeve (202) is shaken off. During the recovery process, the driving mechanism (3) also drives the knocking and vibrating mechanism (5) to vibrate the sampling mechanism (2), thereby increasing the discharge rate of the sampling mechanism (2). Finally, the recovery equipment is thoroughly cleaned.

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