A drilling device for geotechnical engineering investigation

Abstract

The present invention relates to a drilling device for geotechnical engineering survey in the field of geotechnical survey technology, comprising: a chassis, two second mounting ears are fixed on one side of the top of the chassis, and a support frame is rotatably arranged on the two second mounting ears, and an unfolding assembly for propping up the support frame is arranged on the chassis; a positioning and reinforcement assembly is arranged on the chassis; a lifting assembly is installed on the support frame; and a water collecting bin is installed on the lifting end of the lifting assembly. The present invention can provide a better restraining structure for rock core samples inside the drill bit, so as to achieve the effect of automatically stabilizing the rock core samples inside the drill bit and the drill barrel, avoiding the problem of the rock core samples falling out of the drill barrel due to their own gravity, and enabling the entire device to have the function of collecting water emerging from the drill barrel, so as to avoid the problem of splashing water emerging from the drill barrel.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical survey, and in particular discloses a drilling device used for geotechnical engineering survey. Background Art

[0002] Geotechnical engineering investigation refers to the activities of identifying, analyzing, evaluating the geological, environmental characteristics and geotechnical conditions of the construction site and compiling investigation documents according to the requirements of the construction project. Geotechnical investigation is generally carried out on the basis of engineering geological mapping. It can directly penetrate the underground rock layer to obtain the required engineering geological conditions data. It is a reliable method to explore the geological conditions. The main tasks are to explore the lithology and geological structure of the construction site, explore the hydrogeological conditions, explore the ground and physical geological phenomena, and extract rock and soil samples and water samples.

[0003] The existing geotechnical engineering exploration process mainly adopts core drilling samplers to obtain samples, which mainly consists of a drilling motor, a bracket and a sampling drill barrel. The sampling drill barrel is driven to make the drill bit at the bottom drill the rock and soil geology. During the downward drilling work, the core samples formed by drilling and cutting between multiple drill bits are squeezed into the sampling drill barrel, and then the sampling drill barrel is moved up to bring out the core to achieve the drilling sampling of the core. For example, the invention patent with the authorization announcement number CN117189001B retrieved discloses a portable drilling device for geotechnical engineering construction. When the extracted mud passes between the first crushing part and the second crushing part, the first crushing part and the second crushing part rotating in opposite directions will crush the block rock into particles, thereby preventing the block rock from blocking the passage of the mud pump extraction work, improving the stability of the drilling device operation, and improving the service life of the drilling device.

[0004] Based on the above search and in combination with the prior art, it is found that this small core drilling sampler has the following defects when working: in the process of moving the drill barrel upward, the rock core sample breaks and adheres to the original underlying rock layer in the drill barrel, and rises with the rise of the drill barrel. Since there is no direct connection between the drill bit and the rock core sample, there is no good restraint structure for the rock core sample inside the drill bit, and the rock core sample itself has a certain gravity. Therefore, in the process of rising the drill barrel, it is inevitable that the rock core sample will fall back into the drill pit due to the influence of gravity, thereby affecting the sampling process. Therefore, it is urgent to design a drilling equipment for geotechnical engineering survey to solve the above problems. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that there is no good restraint structure for the rock core sample inside the drill bit, and the rock core sample itself has a certain gravity. During the rising process of the drill barrel, the rock core sample will inevitably fall back into the drill pit due to the influence of gravity.

[0006] In order to solve the above problems, the present invention provides a drilling device for geotechnical engineering investigation, comprising:

[0007] A chassis, wherein two second mounting ears are fixed on one side of the top of the chassis, and a support frame is rotatably mounted on the two second mounting ears, and an unfolding assembly for propping up the support frame is disposed on the chassis;

[0008] A positioning and reinforcement component, wherein the positioning and reinforcement component is arranged on the chassis;

[0009] A lifting assembly, the lifting assembly being mounted on the supporting frame;

[0010] A water collecting bin, the water collecting bin is installed at the lifting end of the lifting assembly, a mounting hole is opened in the middle of the bottom of the water collecting bin, a sealing bearing sleeve is fixedly installed on the inner wall of the mounting hole, a screw joint is fixedly installed on the inner wall of the sealing bearing sleeve, a door-shaped rotating plate is fixedly installed on the top of the screw joint, and a rotating motor for driving the door-shaped rotating plate and the screw joint to rotate is fixedly installed in the middle of the top of the water collecting bin;

[0011] A drill barrel, the drill barrel is screwed below the screw joint, and a drill bit is screwed at the bottom of the drill barrel;

[0012] The inner wall of the drill bit is provided with mounting cavities distributed at equal distances, and the outer wall of the drill bit is provided with an annular groove, the annular groove is located above the mounting cavity, and a movable ring is movable on the inner wall of the annular groove, the inner wall of the mounting cavity is fitted with a clamping block, and an extrusion groove is provided in the middle position of one side of the clamping block, the bottom of the extrusion groove is designed to be inclined, and a lifting seat is fitted at the bottom of the extrusion groove, a traction groove is provided in the middle position of the bottom of the extrusion groove, a traction block sliding in the traction groove is fixed to the bottom of the lifting seat, and the cross-section of the traction block and the cross-section of the traction groove are both designed to be inverted T shape, the top of the mounting cavity is provided with a connecting hole at the bottom of the annular groove, and a connecting column passing through the connecting hole is fixed to the top of the lifting seat and the bottom of the movable ring, and a third spring sleeved on the outer wall of the connecting column is fixed to the top of the lifting seat and the top of the mounting cavity, a clamping groove connected to the extrusion groove is provided on one side of the top of the clamping block, and the position of the clamping groove corresponds to the position of the connecting column and the third spring, and anti-slip grooves distributed at equal distances are provided on the other side of the clamping block.

[0013] The present invention is further configured such that the surface of the movable ring is provided with equidistantly distributed toggle grooves, and a corrugated sheath is installed on the top of the movable ring and the top of the annular groove.

[0014] The present invention is further configured such that guide holes are provided at both ends of an outer wall of one side of the clamping block, and guide rods inserted into the guide holes are fixed at both ends of an inner wall of one side of the installation cavity, and a second spring is installed at one end of the guide rod and one end of the guide hole.

[0015] The present invention is further configured such that the unfolding assembly includes two first mounting ears fixedly mounted on the other side of the top of the chassis, and a rotating seat is rotatably provided on the two first mounting ears, a hydraulic cylinder is fixedly mounted on one end of the rotating seat, and a piston end of the hydraulic cylinder is hinged to one side of the support frame.

[0016] The present invention is further configured such that the positioning reinforcement assembly includes a gear rod rotatably connected between the two first mounting ears, and an arc-shaped gear plate meshing with the gear rod is fixedly installed on one side of the rotating seat, an arc-shaped through groove for the arc-shaped gear plate to move is provided on the chassis, and two guide grooves are provided on one side of the chassis close to the gear rod, and tooth columns are movable on the inner walls of the two guide grooves, and the tooth columns mesh with the gear rod, and mounting plates are fixed on the top of the tooth columns, and lifting plates are fixedly installed on the bottom of the mounting plates, and positioning plugs are fixedly installed on both ends of the bottom of the lifting plates, and through holes are provided on the chassis for the positioning plugs to pass through.

[0017] The present invention is further configured such that the lifting assembly includes a threaded column rotatably connected to the inner wall of the support frame, and a forward and reverse motor for driving the threaded column to rotate is fixedly installed on the top of the support frame, a lifting platform is screwed on the threaded column, one side of the lifting platform is fixedly connected to the outer wall of the water collection bin, sliding grooves are provided on both sides of the support frame, and the inner walls on both sides of the lifting platform are rotatably connected to multiple pulleys sliding in the sliding grooves.

[0018] The present invention is further configured such that a water outlet connected to the interior of the water collecting bin is opened in the middle position of the screw joint, and a sealing opening and closing component is provided on the top of the water outlet, a drain pipe is fixed to one side of the bottom of the water collecting bin, and a valve is installed at one end of the drain pipe.

[0019] The present invention is further configured such that the sealing opening and closing assembly includes a sealing groove opened at the top of the water outlet, and a sealing plug is fitted on the inner wall of the sealing groove, two movable grooves are opened on the door-shaped rotating plate, a movable plate inserted in the movable groove is fixed at the middle position of the top of the sealing plug, first springs are installed at both ends of the top of the movable plate and at the tops of the two movable grooves, guide columns passing through the first springs are fixed on the inner walls of the two movable grooves, and guide holes for the two guide columns to pass through are opened on the movable plate.

[0020] The present invention is further configured such that cleaning scrapers are fixedly mounted on both sides of the door-shaped rotating plate, and the cleaning scrapers are attached to the inner wall of the water collecting bin.

[0021] The present invention is further configured such that a protective cover is fixedly installed on the bottom of one side of the support frame close to the drill bit, and a soft gasket is fixedly installed on the bottom of the protective cover.

[0022] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0023] 1. With the above-mentioned drill bit, mounting cavity, clamping block, movable ring, second spring, lifting seat, connecting column, extrusion groove, third spring, traction groove and traction block, when the rock core sample enters the drill bit and the drill barrel, the clamping block can be tightly attached to the surface of the rock core sample under the tensioning force of the second spring and the third spring, so that the drill bit is provided with a better restraining structure for the rock core sample, so that the rock core sample can be automatically stabilized inside the drill bit and the drill barrel, and the problem of the rock core sample falling out of the drill barrel due to its own gravity can be avoided. When taking out the core sample, it is only necessary to adjust the height of the movable ring, and cooperate with the traction of the traction block and the traction groove to drive the clamping block to separate from the rock core sample, so that sampling can be achieved without resistance, and the sampling process is guaranteed to be complete.

[0024] 2. The above-mentioned support frame, lifting assembly, rotating motor, water collecting bin, screw joint, door-shaped rotating plate, drill barrel and sealing opening and closing assembly are adopted. The height of the water collecting bin, drill barrel and drill bit is adjusted by the lifting assembly. The door-shaped rotating plate, screw joint, drill barrel and drill bit are driven to rotate by the rotating motor to realize the function of downward rotary drilling. During the drilling process, if moisture appears in the drill pit, part of the moisture will emerge along the drill barrel and squeeze the sealing opening and closing assembly to open, so that the moisture enters the water collecting bin for collection. The whole geotechnical survey and drilling equipment has the function of collecting the moisture emerging from the drill barrel, avoiding the problem of splashing of moisture emerging from the drill barrel and preventing the continued operation of the construction personnel from being affected.

[0025] 3. By using the above-mentioned chassis, support frame, unfolding assembly, protective cover and soft gasket, the angle of the support frame can be adjusted under the action of the unfolding assembly to achieve the function of adjusting the drilling direction of the geotechnical exploration drilling equipment. The entire drilling equipment also has a folding function, which is convenient for storage and placement. When the support frame is unfolded, the protective cover and the soft gasket can be brought close to the drill pit, so that the entire geotechnical exploration drilling equipment can protect the drill pit and achieve the effect of preventing water splashing on the drill pit surface.

[0026] 4. By using the above-mentioned unfolding assembly and positioning reinforcement assembly, the height of the internal tooth column, mounting plate, lifting plate and positioning plug of the positioning reinforcement assembly can be synchronously adjusted during the unfolding process of the unfolding assembly, so that the positioning plug is inserted below the ground along the perforation, thereby achieving the effect of reinforcing the entire drilling equipment and ensuring the stable performance of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a drilling device for geotechnical engineering investigation according to the present invention;

[0028] Figure 2 It is a schematic structural diagram of a first mounting ear and a second mounting ear of a drilling device for geotechnical engineering investigation according to the present invention;

[0029] Figure 3This is a schematic diagram of the structure of a positioning and reinforcement component of a drilling device used for geotechnical engineering survey according to the present invention;

[0030] Figure 4 This is a schematic diagram of the forward and reverse motor and threaded column structure of a drilling device for geotechnical engineering survey according to the present invention;

[0031] Figure 5 This is a schematic diagram of the lifting platform and screw joint structure of a drilling device for geotechnical engineering investigation according to the present invention;

[0032] Figure 6 A cross-sectional view of a water collection chamber and a drill bit of a drilling device for geotechnical engineering survey according to the present invention;

[0033] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0034] Figure 8 This is a schematic diagram of the structure of a water inlet and a sealing plug of a drilling device used for geotechnical engineering survey according to the present invention;

[0035] Fig. 9 for Figure 6 The enlarged structural diagram at B in the middle;

[0036] Fig.10 It is a schematic diagram of the structure of the annular groove before installation of a drilling device for geotechnical engineering investigation according to the present invention;

[0037] Fig.11 This is a schematic diagram of the structure of a clamping block and a lifting seat of a drilling device for geotechnical engineering survey according to the present invention;

[0038] Fig.12 The present invention is a schematic diagram of a traction trough and a traction block structure of a drilling device used for geotechnical engineering survey.

[0039] Description of the numbers in the figure:

[0040] 1. chassis; 2. positioning reinforcement assembly; 201. perforation; 202. guide groove; 203. arc-shaped through groove; 204. arc-shaped tooth plate; 205. tooth rod; 206. tooth column; 207. mounting plate; 208. lifting plate; 209. positioning plug; 3. first mounting ear; 4. rotating seat; 5. hydraulic cylinder; 6. support frame; 7. lifting assembly; 701. forward and reverse motor; 702. threaded column; 703. slideway; 704. lifting platform; 8. rotating motor; 9. water collection bin; 10. drill tube; 11. drill bit; 12. protective cover; 13. soft gasket; 14. second mounting ear; 15. drainage pipe ; 16. Screw joint; 17. Door-shaped rotating plate; 18. Cleaning scraper; 19. Movable groove; 20. Movable plate; 21. First spring; 22. Sealing plug; 23. Sealing bearing sleeve; 24. Water outlet; 25. Guide column; 26. Mounting cavity; 27. Clamping block; 28. Movable ring; 29. ​​Corrugated sleeve; 30. Annular groove; 31. Toggle groove; 32. Guide rod; 33. Connecting hole; 34. Guide hole; 35. Second spring; 36. Lifting seat; 37. Connecting column; 38. Extrusion groove; 39. Third spring; 40. Slot; 41. Anti-skid groove; 42. Traction groove; 43. Traction block. DETAILED DESCRIPTION

[0041] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The first implementation method:

[0046] See also Figure 1-Figure 12 The present invention provides a drilling device for geotechnical engineering investigation, comprising:

[0047] Chassis 1, two second mounting ears 14 are fixed on one side of the top of chassis 1, and a support frame 6 is rotatably mounted on the two second mounting ears 14, and an unfolding assembly for propping up the support frame 6 is provided on chassis 1, and the unfolding assembly includes two first mounting ears 3 fixedly mounted on the other side of the top of chassis 1, and a rotating seat 4 is rotatably mounted on the two first mounting ears 3, and a hydraulic cylinder 5 is fixedly mounted on one end of the rotating seat 4, and the piston end of the hydraulic cylinder 5 is hinged to one side of the support frame 6, and the angle of the support frame 6 can be adjusted under the action of the hydraulic cylinder 5 in the unfolding assembly, so as to realize the function of adjusting the drilling direction of the geotechnical exploration drilling equipment, and also enable the entire drilling equipment to have a folding function, which is convenient for storage and placement;

[0048] The positioning reinforcement component 2 is arranged on the chassis 1. The unfolding component will synchronously drive the positioning reinforcement component 2 to move. The positioning reinforcement component 2 includes a gear rod 205 rotatably connected between the two first mounting ears 3, and an arc-shaped gear plate 204 meshing with the gear rod 205 is fixedly installed on one side of the rotating seat 4. An arc-shaped through groove 203 for the arc-shaped gear plate 204 to move is provided on the chassis 1. Two guide grooves 202 are provided on one side of the chassis 1 close to the gear rod 205. The inner walls of the two guide grooves 202 are both movable with gear columns 206, which mesh with the gear rod 205. A mounting plate 207 is fixed on the top of the gear column 206, and a lifting plate 20 is fixedly installed on the bottom of the mounting plate 207. 8. Positioning plugs 209 are fixedly installed at both ends of the bottom of the lifting plate 208. A through hole 201 is opened on the chassis 1 for the positioning plug 209 to pass through. The four corners of the chassis 1 are all rotatable with moving wheels. During the unfolding process of the unfolding assembly, the angle of the rotating seat 4 is synchronously adjusted to drive the arc-shaped toothed plate 204 in the positioning reinforcement assembly 2 to rotate, and the meshing action of the arc-shaped toothed plate 204 and the gear rod 205 and the meshing action of the gear rod 205 and the gear column 206 drives the gear column 206, the mounting plate 207, the lifting plate 208 and the positioning plug 209 to move downward, so that the positioning plug 209 is inserted into the ground below the through hole 201, thereby achieving the effect of reinforcing the entire drilling equipment and ensuring the stability of the entire equipment.

[0049] A lifting assembly 7, the lifting assembly 7 is installed on the support frame 6, the lifting assembly 7 includes a threaded column 702 rotatably connected to the inner wall of the support frame 6, and a forward and reverse motor 701 for driving the threaded column 702 to rotate is fixedly installed on the top of the support frame 6, a lifting platform 704 is screwed on the threaded column 702, one side of the lifting platform 704 is fixedly connected to the outer wall of the water collection bin 9, and both sides of the support frame 6 are provided with a slide groove 703, and the inner walls on both sides of the lifting platform 704 are rotatably connected to a plurality of pulleys sliding in the slide groove 703;

[0050] A water collecting bin 9 is installed at the lifting end of the lifting assembly 7. A mounting hole is provided at the middle position of the bottom of the water collecting bin 9, and a sealing bearing sleeve 23 is fixedly installed on the inner wall of the mounting hole. A screw joint 16 is fixedly installed on the inner wall of the sealing bearing sleeve 23. A door-shaped rotating plate 17 is fixedly installed on the top of the screw joint 16. A rotating motor 8 for driving the door-shaped rotating plate 17 and the screw joint 16 to rotate is fixedly installed at the middle position of the top of the water collecting bin 9. The door-shaped rotating plate 17, the screw joint 16, the drill barrel 10 and the drill bit 11 are driven to rotate by the rotating motor 8, and the threaded column 702 is driven to rotate by the forward and reverse motor 701 in the lifting assembly 7 synchronously, so as to lower the height of the lifting platform 704, the water collecting bin 9, the drill barrel 10 and the drill bit 11, thereby realizing the function of downward rotary drilling;

[0051] A drill tube 10, the drill tube 10 is screwed below the screw joint 16, and a drill bit 11 is screwed at the bottom of the drill tube 10;

[0052] The inner wall of the drill bit 11 is provided with mounting cavities 26 distributed at equal distances, and the outer wall of the drill bit 11 is provided with an annular groove 30, the annular groove 30 is located above the mounting cavity 26, the inner wall of the annular groove 30 is provided with a movable ring 28, the inner wall of the mounting cavity 26 is fitted with a clamping block 27, and an extrusion groove 38 is provided at the middle position of one side of the clamping block 27, the bottom of the extrusion groove 38 is designed to be inclined, and the bottom of the extrusion groove 38 is fitted with a lifting seat 36, the middle position of the bottom of the extrusion groove 38 is provided with a traction groove 42, and the bottom of the lifting seat 36 is fixed with a traction block sliding in the traction groove 42 43, the cross-section of the traction block 43 and the cross-section of the traction groove 42 are both designed to be inverted T-shaped, the top of the installation cavity 26 and the bottom of the annular groove 30 are both provided with a connecting hole 33, and the top of the lifting seat 36 and the bottom of the movable ring 28 are fixed with a connecting column 37 passing through the connecting hole 33, and the top of the lifting seat 36 and the top of the installation cavity 26 are fixed with a third spring 39 sleeved on the outer wall of the connecting column 37, and a card slot 40 connected to the extrusion groove 38 is provided on one side of the top of the clamping block 27, and the position of the card slot 40 corresponds to the position of the connecting column 37 and the third spring 39, and the other side of the clamping block 27 One side is provided with anti-slip grooves 41 distributed at equal distances, the surface of the movable ring 28 is provided with toggle grooves 31 distributed at equal distances, and the top of the movable ring 28 and the top of the annular groove 30 are installed with corrugated sheaths 29, the outer diameter of the movable ring 28 is smaller than the outer diameter of the drill bit 11, and the two ends of the outer wall of one side of the clamping block 27 are provided with guide holes 34, and the two ends of the inner wall of one side of the installation cavity 26 are fixed with guide rods 32 inserted in the guide holes 34, and one end of the guide rod 32 and one end of the guide hole 34 are installed with a second spring 35. During the drilling process, the rock core sample will squeeze the clamping block 27 to the installation cavity 2 6 contracts, compressing the second spring 35, and under the extrusion effect of the extrusion groove 38 on the lifting seat 36, the lifting seat 36, the connecting column 37 and the movable ring 28 are driven to rise, and the third spring 39 is compressed, so that the clamping block 27 is tightly attached to the surface of the rock core sample under the reverse tensioning force of the second spring 35 and the third spring 39, so that the inside of the drill bit 11 is provided with a better restraining structure for the rock core sample, so as to achieve the effect of automatically stabilizing the rock core sample inside the drill bit 11 and the drill barrel 10, and avoiding the problem of the rock core sample falling out of the drill barrel 10 due to its own gravity.

[0053] In the present invention, a water port 24 communicating with the interior of the water collecting bin 9 is provided in the middle position of the screw joint 16, and a sealing opening and closing component is provided on the top of the water port 24, a drain pipe 15 is fixed to one side of the bottom of the water collecting bin 9, a valve is installed at one end of the drain pipe 15, the sealing opening and closing component includes a sealing groove provided at the top of the water port 24, and a sealing plug 22 is attached to the inner wall of the sealing groove, two movable grooves 19 are provided on the door-shaped rotating plate 17, a movable plate 20 inserted into the movable groove 19 is fixed at the middle position of the top of the sealing plug 22, first springs 21 are installed at both ends of the top of the movable plate 20 and the tops of the two movable grooves 19, guide posts 25 passing through the first springs 21 are fixed to the inner walls of the two movable grooves 19, and guide holes for the two guide posts 25 to pass through are provided on the movable plate 20, such as Figure 6 , Figure 7 and Figure 8 As shown, the above-mentioned sealing opening and closing components are used, and during the drilling process, if moisture appears in the drill pit, part of the moisture will emerge along the drill barrel 10 and squeeze the sealing plug 22 in the sealing opening and closing component to rise, so that the water outlet 24 is conductive, allowing the moisture to enter the water collection bin 9 for collection, so that the entire geotechnical exploration and drilling equipment has the function of collecting the moisture emerging from the drill barrel 10, avoiding the problem of splashing of moisture emerging from the drill barrel 10.

[0054] In the present invention, cleaning scrapers 18 are fixedly installed on both sides of the door-shaped rotating plate 17, and the cleaning scrapers 18 are attached to the inner wall of the water collecting bin 9, such as Figure 6 and Figure 7 As shown, the above-mentioned cleaning scraper 18 can be used to drive the cleaning scraper 18 to rotate inside the water collecting bin 9 while the rotating motor 8 drives the gate-shaped rotating plate 17 to rotate, so as to scrape off the mud attached to the inner wall of the water collecting bin 9 and make the discharge complete.

[0055] In summary, the working principle of the present invention is as follows: during operation, the operator moves the entire device to the drilling position through the moving wheels, uses the hydraulic cylinder 5 in the deployment assembly to adjust the angles of the support frame 6, the drill tube 10 and the drill bit 11, so that the drill bit 11 is aligned with the drilling position, and synchronously adjusts the angle of the rotating seat 4 during the deployment of the deployment assembly, drives the arc-shaped toothed plate 204 in the positioning reinforcement assembly 2 to rotate, and cooperates with the meshing action of the arc-shaped toothed plate 204 and the toothed rod 205 and the meshing action of the toothed rod 205 and the toothed column 206 to drive the toothed column 206, the mounting plate 207, the lifting plate 208 and the positioning plug 209 to move downward, so that the positioning plug 209 is inserted along the perforation 201. The drilling rig is inserted below the ground, thereby reinforcing the entire drilling equipment. Under the resetting action of the unfolding assembly, on the one hand, the entire drilling equipment can be folded for easy storage and placement, and on the other hand, the positioning and reinforcing assembly 2 can be synchronously driven to reset, so that the positioning plug 209 is separated from the ground. When drilling, the operator drives the door-shaped rotating plate 17, the screw joint 16, the drill barrel 10 and the drill bit 11 to rotate by rotating the rotating motor 8, and synchronously starts the forward and reverse motor 701 in the lifting assembly 7, and drives the threaded column 702 to rotate by the rotation of the forward and reverse motor 701, thereby lowering the height of the lifting platform 704, the water collecting bin 9, the drill barrel 10 and the drill bit 11. The process of downward rotary drilling is realized. During the drilling process, if water appears in the drill pit, part of the water will emerge along the drill tube 10 and squeeze the sealing plug 22 in the sealing opening and closing assembly to rise, so that the water enters the water collecting bin 9 along the drill tube 10 and the water outlet 24 to be collected, and the water emerging from the drill tube 10 is prevented from splashing out. Then the valve is opened to discharge the water through the drain pipe 15. During the drilling process, the rock core sample will enter the drill bit 11 and the drill tube 10. At this time, the rock core sample will squeeze the clamping block 27 to shrink toward the inside of the installation cavity 26, squeeze the second spring 35 to compress, and drive the lifting seat 36 under the squeezing action of the squeezing groove 38 on the lifting seat 36. , the connecting column 37 and the movable ring 28 rise, squeezing the third spring 39 to be compressed, so that the clamping block 27 is tightly attached to the surface of the rock core sample under the reverse tensioning force of the second spring 35 and the third spring 39, so that the drill bit 11 is provided with a better restraining structure for the rock core sample, which can automatically stabilize the rock core sample in the drill bit 11 and the drill barrel 10 to prevent the rock core sample from falling due to its own gravity. When taking out the core sample, the operator needs to adjust the height of the movable ring 28, and cooperate with the traction effect of the traction block 43 and the traction groove 42 to drive the clamping block 27 to separate from the rock core sample, or the drill barrel 10 and the drill bit 11 can be removed to perform the core sample removal operation.

[0056] Second implementation method:

[0057] Reference Figure 1 and Figure 4Based on Implementation Example 1, this implementation example adds the following structure, so that the present application has the effect of preventing water splashing on the surface of the drill pit. The specific configuration is as follows: a protective cover 12 is fixedly installed on the bottom of one side of the support frame 6 close to the drill bit 11, and a soft gasket 13 is fixedly installed on the bottom of the protective cover 12. By using the above-mentioned protective cover 12 and soft gasket 13, the protective cover 12 and the soft gasket 13 can be brought close to the drill pit when the support frame 6 is unfolded, so that the entire geotechnical exploration drilling equipment can protect the drill pit and achieve the effect of preventing water splashing on the surface of the drill pit.

[0058] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A drilling device for geotechnical engineering investigation, characterized in that: include: A chassis, wherein two second mounting ears are fixed on one side of the top of the chassis, and a support frame is rotatably mounted on the two second mounting ears, and an unfolding assembly for propping up the support frame is disposed on the chassis; A positioning and reinforcement component, wherein the positioning and reinforcement component is arranged on the chassis; A lifting assembly, the lifting assembly being mounted on the supporting frame; A water collecting bin is installed at the lifting end of the lifting assembly, a mounting hole is provided at the middle position of the bottom of the water collecting bin, and a sealing bearing sleeve is fixedly installed on the inner wall of the mounting hole, a screw joint is fixedly installed on the inner wall of the sealing bearing sleeve, a door-shaped rotating plate is fixedly installed on the top of the screw joint, and a rotating motor for driving the door-shaped rotating plate and the screw joint to rotate is fixedly installed at the middle position of the top of the water collecting bin, a water outlet connected to the inside of the water collecting bin is provided at the middle position of the screw joint, and a sealing opening and closing assembly is arranged on the top of the water outlet, a drain pipe is fixed on one side of the bottom of the water collecting bin, and the drain pipe has a A valve is installed at one end, the sealing opening and closing assembly includes a sealing groove opened at the top of the water outlet, and a sealing plug is attached to the inner wall of the sealing groove, two movable grooves are opened on the door-shaped rotating plate, a movable plate inserted in the movable groove is fixed at the middle position of the top of the sealing plug, first springs are installed at both ends of the top of the movable plate and the tops of the two movable grooves, guide columns passing through the first springs are fixed on the inner walls of the two movable grooves, and guide holes for the two guide columns to pass through are opened on the movable plate, cleaning scrapers are fixedly installed on both sides of the door-shaped rotating plate, and the cleaning scrapers are attached to the inner wall of the water collecting bin; A drill barrel, the drill barrel is screwed below the screw joint, and a drill bit is screwed at the bottom of the drill barrel; The inner wall of the drill bit is provided with mounting cavities distributed at equal distances, and the outer wall of the drill bit is provided with an annular groove, the annular groove is located above the mounting cavity, and a movable ring is movable on the inner wall of the annular groove, the inner wall of the mounting cavity is fitted with a clamping block, and an extrusion groove is provided in the middle position of one side of the clamping block, the bottom of the extrusion groove is designed to be inclined, and a lifting seat is fitted at the bottom of the extrusion groove, a traction groove is provided in the middle position of the bottom of the extrusion groove, a traction block sliding in the traction groove is fixed to the bottom of the lifting seat, and the cross-section of the traction block and the cross-section of the traction groove are both designed to be inverted T shape, the top of the mounting cavity is provided with a connecting hole at the bottom of the annular groove, and a connecting column passing through the connecting hole is fixed to the top of the lifting seat and the bottom of the movable ring, and a third spring sleeved on the outer wall of the connecting column is fixed to the top of the lifting seat and the top of the mounting cavity, a clamping groove connected to the extrusion groove is provided on one side of the top of the clamping block, and the position of the clamping groove corresponds to the position of the connecting column and the third spring, and anti-slip grooves distributed at equal distances are provided on the other side of the clamping block.

2. The drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: The surface of the movable ring is provided with equidistantly distributed toggle grooves, and the top of the movable ring and the top of the annular groove are provided with corrugated sheaths.

3. The drilling equipment for geotechnical engineering investigation according to claim 2, characterized in that: Guide holes are provided at both ends of the outer wall of one side of the clamping block, and guide rods inserted in the guide holes are fixed at both ends of the inner wall of one side of the installation cavity, and a second spring is installed at one end of the guide rod and one end of the guide hole.

4. The drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: The unfolding assembly includes two first mounting ears fixedly mounted on the other side of the top of the chassis, and a rotating seat is rotatably arranged on the two first mounting ears, a hydraulic cylinder is fixedly mounted on one end of the rotating seat, and a piston end of the hydraulic cylinder is hinged to one side of the support frame.

5. The drilling equipment for geotechnical engineering investigation according to claim 4, characterized in that: The positioning reinforcement assembly includes a gear rod rotatably connected between the two first mounting ears, and an arc-shaped gear plate meshing with the gear rod is fixedly installed on one side of the rotating seat, an arc-shaped through groove for the arc-shaped gear plate to move is opened on the chassis, and two guide grooves are opened on the side of the chassis close to the gear rod, and the inner walls of the two guide grooves are movable with gear columns, and the gear columns are meshed with the gear rod, and mounting plates are fixed on the top of the gear columns, and lifting plates are fixedly installed on the bottom of the mounting plates, and positioning plugs are fixedly installed on both ends of the bottom of the lifting plates, and through holes are opened on the chassis for the positioning plugs to pass through.

6. The drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: The lifting assembly includes a threaded column rotatably connected to the inner wall of the support frame, and a forward and reverse motor for driving the threaded column to rotate is fixedly installed on the top of the support frame, a lifting platform is screwed on the threaded column, one side of the lifting platform is fixedly connected to the outer wall of the water collection bin, and sliding grooves are provided on both sides of the support frame, and the inner walls on both sides of the lifting platform are rotatably connected to multiple pulleys sliding in the sliding grooves.

7. The drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: A protective cover is fixedly installed on the bottom of one side of the support frame close to the drill bit, and a soft gasket is fixedly installed on the bottom of the protective cover.

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