Geotechnical engineering investigation drilling and sampling device

Abstract

The invention relates to the technical field of rock soil sampling, in particular to a geotechnical engineering investigation drilling sampling device which comprises a horizontally-arranged mounting plate, and two sets of vertically-arranged threaded rods are rotationally connected to the lower portion of the mounting plate; when the drill cylinder moves downwards to a proper position and rock soil needs to be sampled, the driving motor is closed, so that the threaded rod does not drive the moving plate to move downwards, the threaded driving rod is fixed by virtue of the pin rod, the drill cylinder is driven to rotate by virtue of the output shaft of the double-shaft motor, and the threaded driving rod is driven to rotate by virtue of the output shaft of the double-shaft motor; the threaded driving rod is in threaded connection with the moving plate when rotating, so that the supporting plate is driven to move downwards, the distance between the supporting plate and the moving plate is increased when the supporting plate moves downwards, the drilling cylinder is driven to move downwards when the supporting plate moves downwards, and rock soil can be conveniently sampled by means of the adjusting structure and the adjustable sampling structure when the drilling cylinder moves downwards; and the rock soil enters the drilling barrel, so that the fixed-point sampling work is completed.

Description

Technical Field

[0001] The invention relates to the technical field of rock and soil sampling, and in particular to a rock and soil engineering survey drilling sampling device. Background Art

[0002] In geotechnical engineering investigation technology, it is often carried out in conjunction with drilling technology, by drilling holes in the rock and soil layers and then testing and analyzing them through geophysical exploration technology;

[0003] At present, when drilling and sampling rock and soil, most of the sampling is carried out by rotating the drill barrel at high speed to insert the drill barrel into the ground. This sampling method requires moving the drill barrel to a suitable position according to the sampling depth. At the same time, the drill barrel needs to intermittently discharge the material in the drill barrel during the moving sampling process. This sampling method is relatively cumbersome and has low sampling efficiency. Therefore, a geotechnical engineering survey drilling sampling device is proposed to facilitate fixed-point sampling according to the depth of rock and soil sampling required, thereby improving sampling efficiency and sampling convenience. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a geotechnical engineering survey drilling sampling device, which is convenient for fixed-point sampling according to the depth of rock and soil sampling required, thereby improving sampling efficiency and sampling convenience.

[0005] The technical solution adopted by the present invention to solve the technical problem is a geotechnical engineering survey drilling sampling device, comprising a horizontally arranged mounting plate, the lower part of which is rotatably connected to two groups of vertically arranged threaded rods, and the upper surface of the mounting plate is provided with a driving structure, and the driving structure is used to drive the two groups of the threaded rods to rotate;

[0006] A horizontally arranged moving plate is threadedly connected to the two groups of threaded rods, a drilling structure is arranged below the moving plate, an adjustable sampling structure is arranged inside the drilling structure, and an adjustment structure is arranged on the lower surface of the moving plate, and the adjustment structure is used to drive the drilling structure to move up and down.

[0007] By adopting the above technical solution, when it is necessary to sample the rock and soil, the device is moved to a suitable position according to the position where the sampling is required, the driving structure is turned on, and the two sets of threaded rods are driven to rotate by the driving structure. When the threaded rods rotate, the movable plate and the drilling structure are driven to move downward, and when the drilling structure moves downward, the adjustable sampling structure is driven to move downward synchronously. When the drilling structure and the adjustable sampling structure move downward and are inserted into the position where sampling is required, the driving structure is turned off so that the driving structure no longer drives the movable plate and the drilling structure to move downward, and then the drilling structure is driven by the adjusting structure. The structure continues to move downward, and the drilling structure relies on the adjustable sampling structure to sample the rock and soil when moving downward. When the adjusting structure drives the drilling structure to move downward to a certain position, the rock and soil sampling work is completed, and the driving structure is turned on again to drive the two sets of threaded rods to rotate in opposite directions. When the two sets of threaded rods rotate in opposite directions, the drilling structure is driven to move upward. When the drilling structure moves upward to a certain position, the drilling structure returns to its initial state, thereby completing the sampling of the rock and soil, thereby facilitating fixed-point sampling according to the depth at which the rock and soil need to be sampled, thereby improving the sampling efficiency and convenience.

[0008] Specifically, the driving structure includes first pulleys respectively fixedly connected to the upper part of the threaded rod, and the two groups of the first pulleys are driven by a first transmission belt;

[0009] The upper end of one group of the threaded rods passes through the mounting plate and is fixedly connected to the second pulley, the upper part of the threaded rod is rotatably connected to the mounting plate, the upper surface of the mounting plate is fixedly connected to a driving motor, the output end of the driving motor is fixed with a third pulley, and the second pulley and the third pulley are driven by a second transmission belt.

[0010] By adopting the above technical scheme, the device is moved to a suitable position according to the sampling position required, and the driving motor is turned on. The output end of the driving motor is driven to rotate forward to drive the third pulley to rotate forward. When the third pulley rotates, the second pulley is driven to rotate forward by the second transmission belt. When the second pulley rotates, it drives a group of threaded rods to rotate. When a group of threaded rods rotates, the two groups of first pulleys are driven to rotate forward by the first transmission belt, thereby driving the two groups of threaded rods to rotate forward. When the two groups of threaded rods rotate forward, the moving plate and the drilling structure are driven to move downward synchronously, so as to facilitate the sampling work.

[0011] After the sampling work is completed, the output end of the driving motor rotates in the opposite direction, driving the third pulley and the second pulley to rotate in the opposite direction. When the second pulley rotates in the opposite direction, it drives the two sets of first pulleys to rotate in the opposite direction, thereby driving the two sets of threaded rods to rotate in the opposite direction. When the two sets of threaded rods rotate in the opposite direction, they drive the movable plate and the drilling structure to move up synchronously and return to the initial state.

[0012] Specifically, the sampling structure includes a horizontally arranged support plate, the lower surface of the support plate is rotatably connected to a chuck, a detachable connection opening in the chuck is downwardly connected to a drill tube, and the adjustable sampling structure is located in the drill tube;

[0013] A dual-axis motor is fixedly connected to the lower surface of the support plate, a gear is fixedly connected to the lower end of the output shaft of the dual-axis motor, a tooth structure is provided on the outer side of the chuck, the gear and the tooth structure are meshed for transmission, a vertically arranged threaded drive rod is provided on the upper end of the output shaft of the dual-axis motor, the upper end of the threaded drive rod passes through the movable plate and is threadedly connected to the movable plate, the lower end of the threaded drive rod is rotatably connected to the upper end of the output shaft of the dual-axis motor through a rotating bearing, a locking structure is provided on the outer side of the rotating bearing, and the locking structure is used to fix the threaded drive rod.

[0014] By adopting the above technical solution, when it is necessary to sample rock and soil, the threaded rod is used to drive the movable plate to move downward, and when the movable plate moves downward, the adjustment structure and the support plate are driven downward, and the dual-axis motor is turned on at the same time, and the gear is driven to rotate by the lower end of the output shaft of the dual-axis motor, and when the gear rotates, it meshes with the tooth structure to drive the chuck to rotate, and when the chuck rotates, it drives the drill barrel to rotate synchronously, and as the support plate moves downward, the drill barrel and the adjustable sampling structure are driven to move downward synchronously, and when the drill barrel moves downward, it is pressed and contacted with the ground, so that the drill barrel and the adjustable sampling structure are inserted into the ground, so as to facilitate the subsequent rock and soil sampling work;

[0015] When the drill tube moves down to a suitable position and it is necessary to sample the rock and soil, the driving motor is turned off so that the threaded rod no longer drives the movable plate to move down. At the same time, the locking structure is used to fix the threaded driving rod, and the output shaft of the dual-axis motor is used to drive the drill tube to rotate. At the same time, the upper end of the output shaft of the dual-axis motor is used to drive the rotating bearing and the threaded driving rod to rotate. When the threaded driving rod rotates, it is threadedly connected with the movable plate, thereby driving the support plate to move down. When the support plate moves down, the distance between the support plate and the movable plate increases, and when the support plate moves down, it drives the drill tube to move down. When the drill tube moves down, the adjustment structure and the adjustable sampling structure can facilitate the sampling of rock and soil. The drill tube moves down by rotating, and the rock and soil enter the drill tube, thereby completing the fixed-point sampling work.

[0016] Specifically, the adjustable sampling structure includes a drill bit installed in a drill barrel, a first hydraulic telescopic rod is fixedly connected to the drill barrel, an output end of the first hydraulic telescopic rod is fixedly connected to an upper end surface of the drill bit, a fixed end of the first hydraulic telescopic rod is fixedly connected to the inside of the drill barrel, a return spring is fixedly connected between the drill bit and the fixed end of the first hydraulic telescopic rod, and the drill bit is located at the lower part of the drill barrel in an initial state;

[0017] The adjustment structure includes a second hydraulic telescopic rod fixedly connected to the lower surface of the movable plate, the fixed end of the second hydraulic telescopic rod is fixedly connected to the lower surface of the movable plate, the output end of the second hydraulic telescopic rod is fixedly connected to the upper surface of the support plate, the fixed end of the first hydraulic telescopic rod is connected to a vertically arranged connecting pipe, the connecting pipe is connected to the fixed end of the second hydraulic telescopic rod through a pipeline, and the second hydraulic telescopic rod is in a compressed state in an initial state.

[0018] By adopting the above technical scheme, when the drill tube moves down to a suitable position and it is necessary to sample the rock and soil, the driving motor is turned off so that the threaded rod no longer drives the movable plate to move down, and the threaded driving rod is fixed by the locking structure, and the output shaft of the dual-axis motor drives the drill tube to rotate and drives the threaded driving rod to rotate. When the threaded driving rod rotates, it is threadedly connected with the movable plate, thereby driving the support plate to move down. When the support plate moves down, the distance between the support plate and the movable plate increases. At the same time, when the support plate moves down, the second hydraulic telescopic rod is extended, and the first hydraulic telescopic rod is shortened by the connection between the second hydraulic telescopic rod and the first hydraulic telescopic rod. At the same time, the first hydraulic telescopic rod can be further shortened by the action of the reset spring. When the first hydraulic telescopic rod is shortened, the drill bit is driven to move up. After the drill bit moves up to a certain position, sampling can be carried out at this time. The threaded connection between the threaded driving rod and the movable plate drives the support plate to move down. When the support plate moves down, the drill tube is driven to move down. When the drill tube rotates and moves down, the rock and soil will enter the drill tube, thereby completing the fixed-point sampling work.

[0019] After the sampling work is completed, the driving motor is relied on to rotate in the reverse direction to drive the moving plate and the supporting plate to move up synchronously. When the supporting plate moves up to a certain position, the driving motor is turned off, and the output shaft of the dual-axis motor is driven to rotate in the reverse direction at the same time, thereby driving the threaded driving rod to rotate. When the threaded driving rod rotates, it is threadedly connected with the moving plate and drives the supporting plate to move up. When the supporting plate moves up, the second hydraulic telescopic rod is squeezed again, thereby driving the first hydraulic telescopic rod to extend, thereby driving the drill bit to move down. When the drill bit moves down, the rock and soil in the drill barrel are squeezed and discharged, so as to facilitate the squeezing and discharge of the rock and soil in the drill barrel. When the threaded driving rod and the supporting plate move up to a certain position, the second hydraulic telescopic rod is in a compressed state again, so as to facilitate recovery to the initial state for the next set of sampling work.

[0020] It should be pointed out that, the greater the downward movement distance of the support plate driven by the threaded drive rod described in the present invention, the greater the extension distance of the second hydraulic telescopic rod, thereby increasing the upward movement distance of the output end of the first hydraulic telescopic rod. When the upward movement distance of the output end of the first hydraulic telescopic rod is greater, the sampling amount inside the drill barrel is also greater. Conversely, the smaller the downward movement distance of the support plate, the smaller the extension distance of the second hydraulic telescopic rod, and the smaller the upward movement distance of the output end of the first hydraulic telescopic rod. When the upward movement distance of the output end of the first hydraulic telescopic rod is smaller, the sampling amount inside the drill barrel is also smaller, thereby facilitating automatic adjustment of the rock and soil sampling amount according to the downward movement distance of the support plate.

[0021] Specifically, the locking structure includes a sleeve, the upper end of the output shaft of the dual-axis motor passes through the sleeve and is fixedly connected to the sleeve, the lower end of the threaded drive rod passes through the sleeve, and a plurality of groups of pin holes are provided on the end of the threaded drive rod close to the rotating bearing. A pin rod is threadedly connected to the outer side of the sleeve, the pin rod corresponds to the pin hole, and an anti-slip handle is fixedly connected to the end of the pin rod away from the sleeve.

[0022] By adopting the above technical solution, when the drill tube moves down to a suitable position and it is necessary to sample the rock and soil, the driving motor is turned off so that the threaded rod no longer drives the moving plate to move down. At the same time, the pin rod is rotated by the anti-slip handle so that the pin rod is inserted into the pin hole. After the pin rod is inserted into the pin hole, the output shaft of the dual-axis motor drives the rotating bearing and the sleeve to rotate. When the sleeve rotates, the threaded driving rod is driven to rotate by the pin rod. When the threaded driving rod rotates, it is threadedly connected with the moving plate, thereby driving the support plate to move down and performing sampling.

[0023] When the sampling work is completed and the rock and soil in the drill tube are discharged, the pin rod can be separated from the pin hole to facilitate the next set of sampling work.

[0024] Specifically, the upper surface of the drill bit is connected with a plurality of groups of vertically arranged positioning rods, the inner top of the drill tube is provided with positioning grooves corresponding to the positioning rods, and the positioning rods are slidably connected with the positioning grooves.

[0025] By adopting the above technical solution, relying on the functions of the positioning rod and the positioning groove, the drill barrel can drive the drill bit to rotate synchronously during the rotation process, thereby facilitating the movement of the drill barrel and the drill bit to the appropriate position and performing fixed-point sampling.

[0026] Specifically, a plurality of groups of vertically arranged sliding rods are fixedly connected to the surface of the support plate, and the upper ends of the sliding rods pass through the moving plate and are slidably connected to the moving plate.

[0027] By adopting the above technical solution, the stability between the support plate and the movable plate can be improved by relying on the action of the sliding rod, and relative rotation between the support plate and the movable plate can be prevented when the threaded driving rod rotates.

[0028] Specifically, a plurality of groups of vertically arranged support legs are fixedly connected to the lower surface of the mounting plate, and horizontally arranged reinforcing rods are fixedly connected between the bottoms of adjacent support legs;

[0029] The lower ends of the two groups of threaded rods are rotatably connected to a horizontally arranged support rod, and one end of the support rod away from the threaded rod is fixedly connected to one side of the reinforcing rod.

[0030] By adopting the above technical solution, the overall stability of the mounting plate can be improved by relying on the supporting legs, and the overall stability of the device can be further improved by cooperating with the reinforcing rods;

[0031] The rotation stability of the two groups of threaded rods can be improved by relying on the function of the support rods.

[0032] Specifically, a vertically arranged scale is fixedly connected to the upper surface of the support plate, and the upper end of the scale passes through the movable plate and is slidably connected to the movable plate.

[0033] By adopting the above technical solution, when the threaded drive rod rotates to drive the support plate to move downward for sampling, the scale can be used to determine the rock and soil sampling amount in the drill tube according to the downward movement distance of the support plate, thereby further improving the convenience of sampling.

[0034] Beneficial effects of the present invention:

[0035] (1) The present invention discloses a drilling sampling device for geotechnical engineering investigation. When the drill tube moves down to a suitable position and it is necessary to sample the rock and soil, the driving motor is turned off so that the threaded rod no longer drives the movable plate to move down. At the same time, the threaded driving rod is fixed by the pin rod, and the drill tube is driven to rotate by the output shaft of the dual-axis motor. At the same time, the threaded driving rod is driven to rotate by the output shaft of the dual-axis motor. When the threaded driving rod rotates, it is threadedly connected with the movable plate, thereby driving the support plate to move down. When the support plate moves down, the distance between the support plate and the movable plate increases. When the support plate moves down, it drives the drill tube to move down. When the drill tube moves down, it is convenient to sample the rock and soil by relying on the adjustment structure and the adjustable sampling structure. The drill tube rotates and moves down, and the rock and soil enter the drill tube, thereby completing the fixed-point sampling work.

[0036] (2) The drilling sampling device for geotechnical engineering investigation described in the present invention, after the sampling work is completed, relies on the reverse rotation of the driving motor to drive the movable plate and the support plate to move upward synchronously. When the support plate moves to a certain position, the driving motor is turned off, and the output shaft of the dual-axis motor is driven to rotate in the reverse direction to drive the support plate to move upward. When the support plate moves up, the second hydraulic telescopic rod is squeezed again, thereby driving the first hydraulic telescopic rod to extend, thereby driving the drill bit to move downward. When the drill bit moves downward, it squeezes the rock and soil in the drill barrel, thereby facilitating the extrusion of the rock and soil in the drill barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 is an axonometric view of the present invention;

[0039] Figure 2 It is a front view of the present invention;

[0040] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of region A;

[0041] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of region B;

[0042] Figure 5 It is a schematic diagram of the cross-sectional structure of the support plate of the present invention;

[0043] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the C region;

[0044] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of the D region;

[0045] Figure 8 It is a structural schematic diagram of the drill pipe after it moves downwards;

[0046] Fig. 9 It is a schematic diagram of the structure after the drill bit of the present invention is moved up;

[0047] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of the E region;

[0048] Fig.11 for Fig. 9 Schematic diagram of the enlarged structure of the F region;

[0049] In the figure: 1. mounting plate; 2. threaded rod; 3. moving plate; 4. first pulley; 5. first transmission belt; 6. second pulley; 7. driving motor; 8. third pulley; 9. second transmission belt; 10. supporting plate; 11. chuck; 12. drill tube; 13. dual-axis motor; 14. output shaft; 15. gear; 16. tooth structure; 17. threaded driving rod; 18. rotating bearing; 19. drill bit; 20. first hydraulic telescopic rod; 21. return spring; 22. second hydraulic telescopic rod; 23. connecting pipe; 24. sleeve; 25. pin hole; 26. pin rod; 27. non-slip handle; 28. positioning rod; 29. ​​positioning groove; 30. sliding rod; 31. supporting leg; 32. reinforcing rod; 33. supporting rod; 34. scale. DETAILED DESCRIPTION

[0050] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0051] In order to facilitate fixed-point sampling according to the depth of rock and soil sampling required, improve sampling efficiency and sampling convenience, as an embodiment of the present invention, Figure 1 , Figure 2 As shown, a geotechnical engineering investigation drilling sampling device according to the present invention comprises a horizontally arranged mounting plate 1, the lower part of the mounting plate 1 is rotatably connected with two groups of vertically arranged threaded rods 2, and the upper surface of the mounting plate 1 is provided with a driving structure, and the driving structure is used to drive the two groups of the threaded rods 2 to rotate;

[0052] A horizontally arranged moving plate 3 is threadedly connected to the two groups of threaded rods 2, a drilling structure is provided below the moving plate 3, an adjustable sampling structure is provided inside the drilling structure, and an adjustment structure is provided on the lower surface of the moving plate 3, and the adjustment structure is used to drive the drilling structure to move up and down.

[0053] When in use, when sampling of rock and soil is required, the device is moved to a suitable position according to the position where sampling is required, the driving structure is turned on, and the two sets of threaded rods 2 are driven to rotate by the driving structure. When the threaded rods 2 rotate, the movable plate 3 and the drilling structure are driven to move downward, and when the drilling structure moves downward, the adjustable sampling structure is driven to move downward synchronously. When the drilling structure and the adjustable sampling structure move downward and are inserted to the position where sampling is required, the driving structure is turned off so that the driving structure no longer drives the movable plate 3 and the drilling structure to move downward, and then the drilling structure is driven to continue to move downward by the adjusting structure. The drilling structure continues to move downward, and the drilling structure relies on the adjustable sampling structure to sample the rock and soil when moving downward. When the adjusting structure drives the drilling structure to move downward to a certain position, the rock and soil sampling work is completed, and the driving structure is turned on again to drive the two sets of threaded rods 2 to rotate in opposite directions. When the two sets of threaded rods 2 rotate in opposite directions, the drilling structure is driven to move upward. When the drilling structure moves upward to a certain position, the drilling structure returns to its initial state, thereby completing the sampling work of the rock and soil, thereby facilitating fixed-point sampling according to the depth at which the rock and soil need to be sampled, thereby improving sampling efficiency and sampling convenience.

[0054] In order to facilitate driving the two sets of threaded rods 2 to rotate, for example, Figure 2 , Figure 3 As shown, the present invention also includes that the driving structure includes first pulleys 4 respectively fixedly connected to the upper part of the threaded rod 2, and the two groups of the first pulleys 4 are driven by a first transmission belt 5;

[0055] The upper end of one group of the threaded rods 2 passes through the mounting plate 1 and is fixedly connected to the second pulley 6. The upper part of the threaded rod 2 is rotatably connected to the mounting plate 1. The upper surface of the mounting plate 1 is fixedly connected to a driving motor 7. The output end of the driving motor 7 is fixed with a third pulley 8. The second pulley 6 and the third pulley 8 are transmitted through a second transmission belt 9.

[0056] When in use, according to the sampling position required, the device is moved to a suitable position, the driving motor 7 is turned on, and the third pulley 8 is driven to rotate forwardly by the output end of the driving motor 7. When the third pulley 8 rotates, the second pulley 6 is driven to rotate forwardly by the second transmission belt 9. When the second pulley 6 rotates, it drives a group of threaded rods 2 to rotate. When a group of threaded rods 2 rotates, it drives two groups of first pulleys 4 to rotate forward by the first transmission belt 5, thereby driving the two groups of threaded rods 2 to rotate forward. When the two groups of threaded rods 2 rotate forward, the moving plate 3 and the drilling structure are driven to move downward synchronously, so as to facilitate the sampling work;

[0057] After the sampling work is completed, the output end of the driving motor 7 rotates in the opposite direction, driving the third pulley 8 and the second pulley 6 to rotate in the opposite direction. When the second pulley 6 rotates in the opposite direction, it drives the two groups of first pulleys 4 to rotate in the opposite direction, thereby driving the two groups of threaded rods 2 to rotate in the opposite direction. When the two groups of threaded rods 2 rotate in the opposite direction, they drive the movable plate 3 and the drilling structure to move up synchronously and return to the initial state.

[0058] In order to facilitate the sampling of rock and soil, for example, Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the present invention also includes that the sampling structure includes a horizontally arranged support plate 10, the lower surface of the support plate 10 is rotatably connected to a chuck 11, the chuck 11 has a detachable connection opening downwardly connected to a drill tube 12, and the adjustable sampling structure is located in the drill tube 12;

[0059] A dual-axis motor 13 is fixedly connected to the lower surface of the support plate 10, and a gear 15 is fixedly connected to the lower end of the output shaft 14 of the dual-axis motor 13. A tooth structure 16 is provided on the outer side of the chuck 11, and the gear 15 is meshed with the tooth structure 16 for transmission. A vertically arranged threaded drive rod 17 is provided on the upper end of the output shaft 14 of the dual-axis motor 13, and the upper end of the threaded drive rod 17 passes through the movable plate 3 and is threadedly connected to the movable plate 3. The lower end of the threaded drive rod 17 is rotatably connected to the upper end of the output shaft 14 of the dual-axis motor 13 through a rotating bearing 18, and a locking structure is provided on the outer side of the rotating bearing 18, and the locking structure is used to fix the threaded drive rod 17.

[0060] When in use, when sampling of rock and soil is required, the threaded rod 2 is used to drive the movable plate 3 to move downward, and when the movable plate 3 moves downward, the adjustment structure and the support plate 10 are driven downward, and at the same time, the dual-axis motor 13 is turned on, and the gear 15 is driven to rotate by the lower end of the output shaft 14 of the dual-axis motor 13, and when the gear 15 rotates, it meshes with the tooth structure 16 to drive the chuck 11 to rotate, and when the chuck 11 rotates, it drives the drill barrel 12 to rotate synchronously, and as the support plate 10 moves downward, the drill barrel 12 and the adjustable sampling structure are driven to move downward synchronously, and when the drill barrel 12 moves downward, it is pressed and contacted with the ground, so that the drill barrel 12 and the adjustable sampling structure are inserted into the ground, so as to facilitate the subsequent sampling of rock and soil;

[0061] When the drill tube 12 moves down to a suitable position and it is necessary to sample the rock and soil, the driving motor 7 is turned off so that the threaded rod 2 no longer drives the movable plate 3 to move down. At the same time, the threaded driving rod 17 is fixed by the locking structure, and the output shaft 14 of the dual-axis motor 13 drives the drill tube 12 to rotate. At the same time, the upper end of the output shaft 14 of the dual-axis motor 13 drives the rotating bearing 18 and the threaded driving rod 17 to rotate. When the threaded driving rod 17 rotates, it is threadedly connected with the movable plate 3, thereby driving the support plate 10 to move down. When the support plate 10 moves down, the distance between the support plate 10 and the movable plate 3 increases. When the support plate 10 moves down, it drives the drill tube 12 to move down. When the drill tube 12 moves down, it can be convenient to sample the rock and soil by relying on the adjustment structure and the adjustable sampling structure. The drill tube 12 rotates and moves down, and the rock and soil enter the drill tube 12, thereby completing the fixed-point sampling work.

[0062] In order to facilitate the completion of fixed-point sampling of rock and soil, for example, Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the present invention also includes that the adjustable sampling structure includes a drill bit 19 installed in a drill barrel 12, a first hydraulic telescopic rod 20 is fixedly connected to the drill barrel 12, an output end of the first hydraulic telescopic rod 20 is fixedly connected to the upper end surface of the drill bit 19, a fixed end of the first hydraulic telescopic rod 20 is fixedly connected to the inside of the drill barrel 12, a reset spring 21 is fixedly connected between the drill bit 19 and the fixed end of the first hydraulic telescopic rod 20, and the drill bit 19 is located at the lower part of the drill barrel 12 in the initial state;

[0063] The adjustment structure includes a second hydraulic telescopic rod 22 fixedly connected to the lower surface of the movable plate 3, the fixed end of the second hydraulic telescopic rod 22 is fixedly connected to the lower surface of the movable plate 3, the output end of the second hydraulic telescopic rod 22 is fixedly connected to the upper surface of the support plate 10, the fixed end of the first hydraulic telescopic rod 20 is connected to a vertically arranged connecting pipe 23, the connecting pipe 23 is connected to the fixed end of the second hydraulic telescopic rod 22 through a pipeline, and the second hydraulic telescopic rod 22 is in a compressed state in the initial state.

[0064] During use, when the drill tube 12 moves down to a suitable position and it is necessary to sample the rock and soil, the drive motor 7 is turned off so that the threaded rod 2 no longer drives the movable plate 3 to move down. At the same time, the threaded drive rod 17 is fixed by the locking structure, and the output shaft 14 of the dual-axis motor 13 drives the drill tube 12 to rotate and drives the threaded drive rod 17 to rotate. When the threaded drive rod 17 rotates, it is threadedly connected with the movable plate 3, thereby driving the support plate 10 to move down. When the support plate 10 moves down, the distance between the support plate 10 and the movable plate 3 increases. At the same time, when the support plate 10 moves down, it drives the second hydraulic telescopic rod 22 to extend. The connection between the compression telescopic rod 22 and the first hydraulic telescopic rod 20 shortens the first hydraulic telescopic rod 20. At the same time, the return spring 21 can further facilitate the shortening of the first hydraulic telescopic rod 20. When the first hydraulic telescopic rod 20 shortens, the drill bit 19 is driven upward. After the drill bit 19 moves up to a certain point, sampling can be performed. The threaded connection between the threaded driving rod 17 and the movable plate 3 drives the support plate 10 to move downward. When the support plate 10 moves downward, the drill tube 12 is driven downward. The drill tube 12 rotates and moves downward, and the rock and soil enter the drill tube 12, thereby completing the fixed-point sampling work.

[0065] After the sampling work is completed, the driving motor 7 is driven to rotate in the reverse direction to drive the moving plate 3 and the supporting plate 10 to move up synchronously. When the supporting plate 10 moves up to a certain position, the driving motor 7 is turned off, and the output shaft 14 of the dual-axis motor 13 is driven to rotate in the reverse direction at the same time, so as to drive the threaded driving rod 17 to rotate. When the threaded driving rod 17 rotates, it is threadedly connected with the moving plate 3 and drives the supporting plate 10 to move up. When the supporting plate 10 moves up, the second hydraulic telescopic rod 22 is squeezed again to drive the first hydraulic telescopic rod 20 to extend, thereby driving the drill bit 19 to move down. When the drill bit 19 moves down, it squeezes the rock and soil in the drill barrel 12, so as to facilitate the squeezing and discharge of the rock and soil in the drill barrel 12. When the threaded driving rod 17 and the supporting plate 10 move up to a certain position, the second hydraulic telescopic rod 22 is in a compressed state again, so as to facilitate the recovery to the initial state for the next set of sampling work.

[0066] It should be pointed out that, the greater the downward movement distance of the threaded drive rod 17 described in the present invention drives the support plate 10, the greater the extension distance of the second hydraulic telescopic rod 22, thereby increasing the upward movement distance of the output end of the first hydraulic telescopic rod 20. When the upward movement distance of the output end of the first hydraulic telescopic rod 20 is greater, the sampling amount inside the drill barrel 12 is also greater. Conversely, when the downward movement distance of the support plate 10 is smaller, the extension distance of the second hydraulic telescopic rod 22 is smaller, and at the same time, the upward movement distance of the output end of the first hydraulic telescopic rod 20 is smaller. When the upward movement distance of the output end of the first hydraulic telescopic rod 20 is smaller, the sampling amount inside the drill barrel 12 is also smaller, thereby facilitating automatic adjustment of the sampling amount of rock and soil according to the downward movement distance of the support plate 10.

[0067] For example, Figure 5 , Figure 6 , Fig. 9 , Fig.10 As shown, the present invention also includes that the locking structure includes a sleeve 24, the upper end of the output shaft 14 of the dual-axis motor 13 passes through the sleeve 24 and is fixedly connected to the sleeve 24, the lower end of the threaded drive rod 17 passes through the sleeve 24, and a plurality of groups of pin holes 25 are provided on the end of the threaded drive rod 17 close to the rotating bearing 18, the outer side of the sleeve 24 is threadedly connected with a pin rod 26, the pin rod 26 corresponds to the pin hole 25, and the end of the pin rod 26 away from the sleeve 24 is fixedly connected with an anti-slip handle 27.

[0068] During use, when the drill tube 12 moves down to a suitable position and it is necessary to sample the rock and soil, the drive motor 7 is turned off so that the threaded rod 2 no longer drives the movable plate 3 to move down. At the same time, the pin rod 26 is rotated by the anti-slip handle 27 so that the pin rod 26 is inserted into the pin hole 25. After the pin rod 26 is inserted into the pin hole 25, the output shaft 14 of the dual-axis motor 13 drives the rotating bearing 18 and the sleeve 24 to rotate. When the sleeve 24 rotates, the threaded drive rod 17 is driven to rotate by the pin rod 26. When the threaded drive rod 17 rotates, it is threadedly connected with the movable plate 3, thereby driving the support plate 10 to move down and perform sampling.

[0069] When the sampling work is completed and the rock and soil in the drill tube 12 are discharged, the pin rod 26 can be separated from the pin hole 25, so as to facilitate the subsequent next set of sampling work.

[0070] For example, Figure 5 , Figure 8 As shown, the present invention also includes that the upper surface of the drill bit 19 is connected to a plurality of groups of vertically arranged positioning rods 28, the inner top of the drill tube 12 is provided with positioning grooves 29 corresponding to the positioning rods 28, and the positioning rods 28 are slidably connected to the positioning grooves 29.

[0071] When in use, the positioning rod 28 and the positioning groove 29 can facilitate the drill tube 12 to drive the drill bit 19 to rotate synchronously during the rotation process, so as to facilitate the drill tube 12 and the drill bit 19 to move to a suitable position and perform fixed-point sampling.

[0072] For example, Figure 2 As shown, the present invention also includes that a plurality of groups of vertically arranged sliding rods 30 are fixedly connected to the upper surface of the support plate 10 , and the upper ends of the sliding rods 30 pass through the moving plate 3 and are slidably connected to the moving plate 3 .

[0073] When in use, the sliding rod 30 can improve the stability between the support plate 10 and the movable plate 3, and prevent the support plate 10 and the movable plate 3 from rotating relative to each other when the threaded driving rod 17 rotates.

[0074] For example, Figure 1 , Figure 5 As shown, the present invention also includes that a plurality of groups of vertically arranged support legs 31 are fixedly connected to the lower surface of the mounting plate 1, and horizontally arranged reinforcing rods 32 are fixedly connected between the bottoms of adjacent support legs 31;

[0075] The lower ends of the two groups of threaded rods 2 are rotatably connected to a horizontally arranged support rod 33 , and one end of the support rod 33 away from the threaded rod 2 is fixedly connected to one side of the reinforcing rod 32 .

[0076] When in use, the support legs 31 can improve the overall stability of the mounting plate 1, and the reinforcing rods 32 can further improve the overall stability of the device;

[0077] The support rods 33 can improve the rotation stability of the two groups of threaded rods 2.

[0078] For example, Figure 1 , Figure 2 , Figure 3 As shown, the present invention also includes that a vertically arranged scale 34 is fixedly connected to the upper surface of the support plate 10 , and the upper end of the scale 34 passes through the movable plate 3 and is slidably connected to the movable plate 3 .

[0079] During use, when the threaded drive rod 17 rotates to drive the support plate 10 downward for sampling, the scale 34 can be used to determine the rock and soil sampling amount in the drill tube 12 according to the downward movement distance of the support plate 10, thereby further improving the convenience of sampling.

[0080] When the present invention is in use, when it is necessary to sample rock and soil, the device is moved to a suitable position according to the position where sampling is required, and the driving motor 7 is started. The output end of the driving motor 7 drives the third pulley 8 to rotate forwardly. When the third pulley 8 rotates, the second transmission belt 9 drives the second pulley 6 to rotate forwardly. When the second pulley 6 rotates, it drives a group of threaded rods 2 to rotate. When a group of threaded rods 2 rotates, the first transmission belt 5 drives two groups of first pulleys 4 to rotate forward, thereby driving the two groups of threaded rods 2 to rotate forward. When the two groups of threaded rods 2 rotate forward, the moving plate 3 and the drill tube 12 are driven to move downward synchronously, so as to facilitate the sampling work.

[0081] At the same time, the dual-axis motor 13 is turned on, and the gear 15 is driven to rotate by the lower end of the output shaft 14 of the dual-axis motor 13. When the gear 15 rotates, it meshes with the tooth structure 16 to drive the chuck 11 to rotate. When the chuck 11 rotates, it drives the drill barrel 12 to rotate synchronously. As the support plate 10 moves downward, the drill barrel 12 and the drill bit 19 are driven to move downward synchronously. When the drill barrel 12 moves downward, it is pressed and contacted with the ground, so that the drill barrel 12 and the drill bit 19 are inserted into the ground, so as to facilitate the subsequent rock and soil sampling work;

[0082] When the drill tube 12 moves down to a suitable position and needs to sample the rock and soil, the drive motor 7 is turned off so that the threaded rod 2 no longer drives the movable plate 3 to move down. At the same time, the threaded drive rod 17 is fixed by the pin rod 26, and the output shaft 14 of the dual-axis motor 13 drives the drill tube 12 to rotate and drives the threaded drive rod 17 to rotate. When the threaded drive rod 17 rotates, it is threadedly connected with the movable plate 3, thereby driving the support plate 10 to move down. When the support plate 10 moves down, the distance between the support plate 10 and the movable plate 3 increases. At the same time, when the support plate 10 moves down, it drives the second hydraulic telescopic rod 22 to extend. The connection between the rod 22 and the first hydraulic telescopic rod 20 shortens the first hydraulic telescopic rod 20. At the same time, the return spring 21 can further facilitate the shortening of the first hydraulic telescopic rod 20. When the first hydraulic telescopic rod 20 shortens, the drill bit 19 is driven upward. After the drill bit 19 is moved upward to a certain extent, sampling can be carried out. The threaded connection between the threaded driving rod 17 and the movable plate 3 drives the support plate 10 to move downward. When the support plate 10 moves downward, the drill tube 12 is driven downward. The drill tube 12 rotates and moves downward, and the rock and soil enter the drill tube 12, thereby completing the fixed-point sampling work.

[0083] After the sampling work is completed, the driving motor 7 is driven to rotate in the reverse direction to drive the moving plate 3 and the supporting plate 10 to move up synchronously. When the supporting plate 10 moves up to a certain position, the driving motor 7 is turned off, and the output shaft 14 of the dual-axis motor 13 is driven to rotate in the reverse direction at the same time, so as to drive the threaded driving rod 17 to rotate. When the threaded driving rod 17 rotates, it is threadedly connected with the moving plate 3 and drives the supporting plate 10 to move up. When the supporting plate 10 moves up, the second hydraulic telescopic rod 22 is squeezed again to drive the first hydraulic telescopic rod 20 to extend, thereby driving the drill bit 19 to move down. When the drill bit 19 moves down, it squeezes the rock and soil in the drill barrel 12, so as to facilitate the squeezing and discharge of the rock and soil in the drill barrel 12. When the threaded driving rod 17 and the supporting plate 10 move up to a certain position, the second hydraulic telescopic rod 22 is in a compressed state again, so as to facilitate the recovery to the initial state for the next set of sampling work.

[0084] When the sampling work is completed and the rock and soil in the drill tube 12 are discharged, the pin rod 26 can be separated from the pin hole 25, so as to facilitate the subsequent next set of sampling work.

[0085] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drilling sampling device for geotechnical engineering investigation, characterized in that: It comprises a horizontally arranged mounting plate (1), the lower part of which is rotatably connected to two groups of vertically arranged threaded rods (2), and the upper surface of the mounting plate (1) is provided with a driving structure, which is used to drive the two groups of threaded rods (2) to rotate; A horizontally arranged moving plate (3) is threadedly connected to the two groups of threaded rods (2); a drilling structure is provided below the moving plate (3); an adjustable sampling structure is provided inside the drilling structure; an adjustment structure is provided on the lower surface of the moving plate (3); and the adjustment structure is used to drive the drilling structure to move up and down.

2. A geotechnical engineering survey drilling sampling device according to claim 1, characterized in that: The driving structure comprises first pulleys (4) respectively fixedly connected to the upper part of the threaded rod (2), and two groups of the first pulleys (4) are driven by a first transmission belt (5); The upper ends of one group of the threaded rods (2) pass through the mounting plate (1) and are fixedly connected to a second pulley (6); the upper part of the threaded rods (2) is rotatably connected to the mounting plate (1); the upper surface of the mounting plate (1) is fixedly connected to a driving motor (7); a third pulley (8) is fixed to the output end of the driving motor (7); and the second pulley (6) and the third pulley (8) are driven by a second transmission belt (9).

3. A geotechnical engineering survey drilling sampling device according to claim 2, characterized in that: The sampling structure comprises a horizontally arranged support plate (10), the lower surface of the support plate (10) is rotatably connected to a chuck (11), the chuck (11) has a detachable connection opening downwardly connected to a drill tube (12), and the adjustable sampling structure is located in the drill tube (12); A dual-axis motor (13) is fixedly connected to the lower surface of the support plate (10), and a gear (15) is fixedly connected to the lower end of the output shaft (14) of the dual-axis motor (13). A tooth structure (16) is provided on the outer side of the chuck (11), and the gear (15) and the tooth structure (16) are meshed and transmitted. A vertically arranged threaded drive rod (17) is provided on the upper end of the output shaft (14) of the dual-axis motor (13), and the upper end of the threaded drive rod (17) passes through the movable plate (3) and is threadedly connected to the movable plate (3). The lower end of the threaded drive rod (17) is rotatably connected to the upper end of the output shaft (14) of the dual-axis motor (13) through a rotating bearing (18), and a locking structure is provided on the outer side of the rotating bearing (18), and the locking structure is used to fix the threaded drive rod (17).

4. A geotechnical engineering survey drilling sampling device according to claim 3, characterized in that: The adjustable sampling structure comprises a drill bit (19) installed in a drill barrel (12), a first hydraulic telescopic rod (20) is fixedly connected inside the drill barrel (12), an output end of the first hydraulic telescopic rod (20) is fixedly connected to an upper end surface of the drill bit (19), a fixed end of the first hydraulic telescopic rod (20) is fixedly connected to the inside of the drill barrel (12), a return spring (21) is fixedly connected between the drill bit (19) and the fixed end of the first hydraulic telescopic rod (20), and the drill bit (19) is located at the lower part of the drill barrel (12) in an initial state; The adjustment structure comprises a second hydraulic telescopic rod (22) fixedly connected to the lower surface of the movable plate (3); the fixed end of the second hydraulic telescopic rod (22) is fixedly connected to the lower surface of the movable plate (3); the output end of the second hydraulic telescopic rod (22) is fixedly connected to the upper surface of the support plate (10); the fixed end of the first hydraulic telescopic rod (20) is connected to a vertically arranged connecting pipe (23); the connecting pipe (23) is connected to the fixed end of the second hydraulic telescopic rod (22) through a pipeline; the second hydraulic telescopic rod (22) is in a compressed state in an initial state.

5. A geotechnical engineering survey drilling sampling device according to claim 4, characterized in that: The locking structure comprises a sleeve (24), the upper end of the output shaft (14) of the dual-axis motor (13) passes through the sleeve (24) and is fixedly connected to the sleeve (24), the lower end of the threaded drive rod (17) passes through the sleeve (24), a plurality of groups of pin holes (25) are provided on one end of the threaded drive rod (17) close to the rotating bearing (18), a pin rod (26) is threadedly connected to the outer side of the sleeve (24), the pin rod (26) corresponds to the pin hole (25), and an end of the pin rod (26) away from the sleeve (24) is fixedly connected to an anti-slip handle (27).

6. A geotechnical engineering survey drilling sampling device according to claim 5, characterized in that: The upper surface of the drill bit (19) is connected to a plurality of groups of vertically arranged positioning rods (28), the inner top of the drill tube (12) is provided with positioning grooves (29) corresponding to the positioning rods (28), and the positioning rods (28) are slidably connected to the positioning grooves (29).

7. A geotechnical engineering survey drilling sampling device according to claim 6, characterized in that: A plurality of groups of vertically arranged sliding rods (30) are fixedly connected to the upper surface of the support plate (10), and the upper ends of the sliding rods (30) pass through the moving plate (3) and are slidably connected to the moving plate (3).

8. A geotechnical engineering survey drilling sampling device according to claim 7, characterized in that: A plurality of groups of vertically arranged support legs (31) are fixedly connected to the lower surface of the mounting plate (1), and horizontally arranged reinforcing rods (32) are fixedly connected between the bottoms of adjacent support legs (31); The lower ends of the two groups of threaded rods (2) are rotatably connected to a horizontally arranged support rod (33), and one end of the support rod (33) away from the threaded rod (2) is fixedly connected to one side of the reinforcing rod (32).

9. A geotechnical engineering survey drilling sampling device according to claim 8, characterized in that: A vertically arranged scale (34) is fixedly connected to the upper surface of the support plate (10), and the upper end of the scale (34) passes through the movable plate (3) and is slidably connected to the movable plate (3).

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