A geological survey drilling device and method for geotechnical engineering design

Abstract

The present application provides a geological survey drilling device and method for geotechnical engineering design, which relates to the field of geological sampling technology, including a vehicle body, a propulsion mechanism, a drill rod and a drill bit, wherein the drill rod includes a plurality of sampling tubes and a locking assembly arranged between two adjacent sampling tubes, the drill bit includes a drill barrel arranged at the bottom of the drill rod, a spacer arranged inside the drill barrel, and a plurality of cutting plates equidistantly slidably arranged on the side wall of the spacer, and a knocking assembly is arranged on a bracket, and the knocking assembly can strike the outside of the drill rod during the vertical movement of the drill rod driven by the propulsion mechanism. The present application can cut off the soil core pressed into the drill rod from the external soil layer, and seal the bottom of the drill rod to prevent the soil core from slipping during the upward movement of the drill rod and affecting the soil sample collection, and can also assemble the drill rod according to needs to facilitate the division of the soil core into multiple small sections, and stably remove the soil core from the drill rod to avoid the soil core from being broken and crushed when being taken out of a longer drill rod and affecting subsequent detection.

Description

Technical Field

[0001] The present invention relates to the field of geological sampling technology, and in particular to a geological survey drilling device and method for geotechnical engineering design. Background Art

[0002] Geological survey is an important activity to understand underground structure, rock properties and underground resource distribution. It is a survey and research activity to explore and detect geology through various means and methods, determine the appropriate bearing layer, determine the foundation type according to the bearing capacity of the foundation of the bearing layer, and calculate the foundation parameters. It is to find industrially significant deposits in the mineral survey, to find out the quality and quantity of minerals, as well as the technical conditions for mining and utilization, and to provide the mineral reserves and geological data required for mine construction design. It is to investigate and study the geological conditions such as rocks, strata, structures, minerals, hydrology, and landforms in a certain area. In geological survey, the use of drilling sampling devices is a common way to obtain samples of underground soil layers. In geological survey, it is often necessary to drill and sample geological soil layers. The usual practice is to use a drill rod to drill directly into the predetermined depth in the stratum. At this time, a part of the soil layer will be pressed into the inside of the drill rod, and then the drill rod is taken out, and the drill rod brings out the soil layer inside it, thereby completing the sampling of the soil layer.

[0003] After the drill rod of the current geological drilling device drills into the soil, the soil core pressed into the drill rod will be connected to the soil outside the drill rod. Therefore, when the drill rod is taken out, the soil core inside it will not only be pulled out of the drill rod by the external soil layer, but also slide out of the drill rod under the action of gravity, which will affect the collection of the soil core. In addition, when the staff pours out the soil core inside the longer drill rod, if the soil core pressed into the drill rod is relatively moist, the soil core will stick to the inner wall of the drill rod and cannot be poured out completely. If the soil core pressed into the drill rod is relatively soft, the poured soil core will break or spread out, and it is impossible to form a columnar soil core, which is not convenient for subsequent detection. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that when taking out the drill rod, the soil core of the existing geological exploration drilling device easily slips out of the drill rod and the soft and moist soil core is not convenient to be completely poured out of the drill rod after being collected.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A geological survey drilling device for geotechnical engineering design, comprising a vehicle body, a bracket arranged on the top of the vehicle body, and a propulsion mechanism arranged on the bracket, and also comprising:

[0007] A drill rod disposed at the output end of the propulsion mechanism, the drill rod comprising a plurality of sampling barrels and a locking assembly disposed between two adjacent sampling barrels, the locking assembly being capable of fixing the two adjacent sampling barrels along the forward and reverse directions of the drill rod axis;

[0008] A drill bit, the drill bit comprising a drill barrel arranged at the bottom of a drill rod, a conical head arranged at the bottom of the drill barrel, a feed port opened in the middle of the drill barrel and the conical head and connected to the drill rod, a spacer arranged inside the drill barrel, a plurality of cutting plates equidistantly slidably arranged on the side wall of the spacer, and a driving assembly arranged inside the drill barrel for driving the plurality of cutting plates to reciprocate along the axial direction of the drill barrel to open and close the feed port;

[0009] A striking assembly is arranged on the bracket, and the striking assembly can strike the outside of the drill rod when the propulsion mechanism drives the drill rod to move vertically.

[0010] As a preferred technical solution of the present application, the driving assembly includes a first motor arranged on the inner top wall of the drill barrel, a plurality of first rotating rods rotatably arranged on the inner wall of the drill barrel, a gear ring rotatably arranged on the inner side wall of the spacer, a first gear and a second gear arranged on the first rotating rod, and a rack arranged on the top of the cutting plate and slidably connected to the spacer, wherein the output shaft of the first motor is connected to a first rotating rod, the first gear is meshed with the gear ring, and the second gear is meshed with the rack.

[0011] As a preferred technical solution of the present application, the locking assembly includes a threaded head arranged at the top of the sampling barrel, an internal thread arranged on the inner wall of the bottom of the sampling barrel and cooperating with the threaded head, an external thread arranged on the outer wall of the bottom of the sampling barrel, a threaded sleeve with a thread arranged on the external thread, and a threaded column arranged on the outside of the sampling barrel near the top and cooperating with the threaded sleeve, wherein the screwing direction of the threaded head is opposite to the screwing direction of the threaded sleeve.

[0012] As a preferred technical solution of the present application, the propulsion mechanism includes a cylinder arranged at the top of the bracket, a piston rod arranged at the output end of the cylinder, a first connecting flange arranged at the bottom of the piston rod, and a second connecting flange arranged at the top of the drill barrel, wherein the topmost sampling barrel constituting the drill rod is connected to the piston rod through the first connecting flange, and the bottommost sampling barrel constituting the drill rod is connected to the top of the drill barrel through the second connecting flange.

[0013] As a preferred technical solution of the present application, the knocking assembly includes an installation box arranged between the top of the vehicle body and the side wall of the bracket, movable grooves opened on both sides of the installation box, a rotating shaft rotatably arranged on the top of the vehicle body and extending into the movable groove, a plurality of curved rods sleeved on the outer wall of the rotating shaft, a rubber ball rollingly arranged on the end of the curved rod away from the rotating shaft, a fixed block arranged on the outer wall of the rotating shaft near the bottom, a torsion spring sleeved on the rod wall of the rotating shaft between the vehicle body and the fixed block, and a toggle assembly arranged inside the installation box.

[0014] As a preferred technical solution of the present application, the toggle assembly includes an arc plate arranged at the top of the rotating shaft, a second rotating rod rotatably arranged on the inner wall of the installation box, a third gear and a cam arranged on the rod wall of the second rotating rod, a connecting rod arranged on the side wall of the first connecting flange, and a toothed plate arranged on the top of the connecting rod and extending to the inside of the installation box to engage with the third gear, and the cam cooperates with the arc plate.

[0015] As a preferred technical solution of the present application, a support plate is provided on the front side of the vehicle body, and a limit assembly is provided on the top of the support plate. The limit assembly includes a rotating sleeve rotatably arranged on the top of the support plate, a tooth groove arranged on the outer wall of the rotating sleeve, a second motor arranged on the top of the support plate, a fourth gear arranged on the output shaft of the second motor and meshing with the tooth groove, a plurality of support tubes equidistantly arranged on the top of the rotating sleeve, and an arc-shaped limit plate arranged on the top of the support tube; a cover body is installed on the top of the support plate, and grooves for vertical movement of the drill rod and the drill bit are opened on the surface of the support plate and the cover body.

[0016] As a preferred technical solution of the present application, a water tank and a water pump are provided on the top of the vehicle body, a drainage sleeve is fixedly connected to the top of the support plate, a flow cavity connected to the support tube is provided inside the rotating sleeve and the arc-shaped limit plate, and a plurality of drainage grooves are provided on the inner surface of the arc-shaped limit plate, the rotating sleeve is rotatably connected to the inner wall of the drainage sleeve, a plurality of water outlet holes are provided on the inner wall of the drainage sleeve, a plurality of water inlet holes are provided on the outer wall of the rotating sleeve located inside the drainage sleeve, a water inlet pipe is provided between the input end of the water pump and the water tank, and a water outlet pipe is provided between the output end of the water pump and the drainage sleeve.

[0017] As a preferred technical solution of the present application, the side walls at both ends of the vehicle body are also provided with a support assembly, and the support assembly includes a third rotating rod rotatably arranged on the side walls at both ends of the vehicle body, a support sleeve arranged on the outer wall of the third rotating rod, a positioning plate slidably arranged inside the support sleeve, a spring arranged between the positioning plate and the inner wall of the support sleeve, a positioning pile arranged at the bottom of the positioning plate, a limiting cylinder arranged on the outer wall of the mounting box, a fourth rotating rod passing through the limiting cylinder and the mounting box and connected to the second rotating rod, and a transmission belt arranged between the third rotating rod and the fourth rotating rod.

[0018] The present invention also discloses a method for using a geological survey drilling device for geotechnical engineering design, comprising the following steps:

[0019] S1: First, the drill rod is transported to a suitable position through the vehicle body, and then the drill rod and the drill bit are driven to be inserted into the soil through the propulsion assembly. The soil will be squeezed into several sampling tubes under pressure, and then the first motor is started to drive a first rotating rod in the drill tube to rotate, and then the gear ring can be driven to rotate through the first gear, and the gear ring will drive several first rotating rods with first gears to rotate together. At this time, several first rotating rods will continue to drive the cutting plate with racks to move toward the axis of the drill tube through the second gear, and the feed port inside the drill tube can be sealed while the soil core in the drill tube can be cut off from the outside soil, and then the drill rod is driven to move upward out of the soil layer through the propulsion mechanism;

[0020] S2: When the drill rod is moved upward, the toothed plate arranged at the top of the drill rod can drive the second rotating rod provided with the third gear to rotate, and the second rotating rod will drive the cam to rotate continuously, and cooperate with the torsion spring and the arc plate arranged on the rotating shaft to drive the rotating shaft to rotate back and forth, and then the rubber ball on the curved rod can continuously hit the outside of the drill rod, so that the sampling tube vibrates, and the soil core inside the sampling tube is separated from its inner wall;

[0021] S3: After the drill rod with the soil core is removed from the soil layer, the threaded sleeve on the outer side of the upper sampling tube can be rotated to move upward to disengage from the threaded column on the outer side of the lower sampling tube, and then the lower sampling tube can be reversed to disengage the threaded head from the bottom of the upper sampling tube, thus completing the disassembly of the two adjacent sampling tubes. By continuing to perform the above operations, all the sampling tubes constituting the drill rod can be disassembled, and then the soil core in each sampling tube can be taken out;

[0022] S4: And when the drill rod is pressed into the soil by the propulsion mechanism, the second motor can be started to drive the rotating sleeve with teeth to rotate through the fourth gear. At this time, several arc-shaped limit plates on the top of the rotating sleeve will rotate at high speed around the outside of the drill rod. When the drill rod moves slightly offset vertically, it will touch the arc-shaped limit plate. At this time, the high-speed rotating arc-shaped limit plate will squeeze the drill rod to a vertical position. When the drill rod is taken out after sampling, the water pump can be started to drain water into the drainage sleeve. The water will continue to enter the flow cavity inside the rotating sleeve, and pass through the support tube to spray from the inner side of the arc-shaped limit plate to the drill rod, thereby flushing the soil attached to the outside of the drill rod.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. First, the drill rod is transported to a suitable position through the vehicle body, and then the drill rod and the drill bit are driven to be inserted into the soil through the propulsion assembly. The soil will be squeezed into several sampling tubes under pressure, and then the first motor is started to work. Through the first rotating rod, the first gear, the second gear, the gear ring and the rack, several cutting plates can be driven to move toward the axis of the drill tube at the same time, which can not only seal the feed port inside the drill tube, but also cut off the soil core in the drill tube from the external soil, and then the drill rod is driven by the propulsion mechanism to move upward out of the soil layer. At this time, the soil core pressed into the drill rod will not slip from the sampling tube, which solves the problem that the soil core pressed into the drill rod in the prior art cannot be completely sampled because it is connected to the external soil or slides down under the action of gravity.

[0025] 2. Through the provided knocking assembly, when the drill rod is moved upward, the toothed plate provided on the top of the drill rod can drive the second rotating rod provided with the third gear to rotate, and the second rotating rod can drive the rotating shaft to reciprocate through the cam, the torsion spring and the arc plate, so that the reciprocatingly rotating rubber ball can continuously hit the outside of the drill rod, so that the sampling tube can vibrate, and the soil core inside the sampling tube can be separated from its inner wall, so that the soil core can be quickly and completely poured out, which solves the problem in the prior art that the soil core pressed into the drill rod cannot be poured out because it adheres to the inner wall of the drill rod due to moisture.

[0026] 3. Through the provided locking assembly, when the drill rod with the soil core is moved out of the soil layer, the threaded sleeve on the outside of the upper sampling tube can be rotated to move upward to disengage from the threaded column on the outside of the lower sampling tube, and then the lower sampling tube can be reversed to make the threaded head disengage from the bottom of the upper sampling tube to complete the disassembly of the two adjacent sampling tubes. Through the above operation, the sampling tubes that make up the drill rod can be completely disassembled, thereby facilitating the division of the longer soil core into multiple small sections of soil cores, thereby preventing the whole soil core from being broken and crushed due to part of the soil being too loose when being poured out, and different numbers of sampling tubes can be used as needed to install drill rods of appropriate lengths to collect soil samples at different depths, and compared with the prior art method of only connecting by thread, after the sampling tubes of the present application are assembled, they will become tighter and tighter as they rotate in the forward and reverse directions, thereby improving the stability of the drill rod installation.

[0027] 4. Through the set limit assembly, when the drill rod is pressed into the soil by the propulsion mechanism, the second motor can also be started. Through the set fourth gear, tooth groove, rotating sleeve and support tube, several arc-shaped limit plates can be driven to rotate at high speed around the outside of the drill rod. When the vertical movement of the drill rod is slightly offset, it will touch the arc-shaped limit plate. At this time, the high-speed rotating arc-shaped limit plate will squeeze the drill rod to a vertical position, which is convenient for limiting the drill rod and preventing the drill rod from deviating and affecting the sampling work. When the drill rod after sampling is taken out, the water pump can also be started. Through the set water pump, water inlet pipe, water outlet pipe and drainage sleeve, water can be discharged into the rotating sleeve first, and then sprayed to the drill rod from the inner side of the arc-shaped limit plate through the support tube, so as to flush the soil attached to the outside of the drill rod, keep the surface of the drill rod clean, and facilitate the subsequent removal of the soil core inside and the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front structural diagram of the present invention;

[0029] Figure 2 It is a rear view structural diagram of the present invention;

[0030] Figure 3 It is a partial split structure diagram of the present invention;

[0031] Figure 4 It is a partial cross-sectional structural diagram of the present invention;

[0032] Figure 5 It is a structural diagram of a drill rod of the present invention;

[0033] Figure 6 The internal structure diagram of the drill bit of the present invention;

[0034] Figure 7 The internal structure diagram of the drill bit of the present invention;

[0035] Figure 8 It is a structural diagram of the striking assembly of the present invention;

[0036] Fig. 9 It is a structural diagram of the limiting mechanism of the present invention;

[0037] Fig.10 It is a structural diagram of the support assembly of the present invention;

[0038] Fig.11 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0039] Fig.12 For the present invention Figure 4 The structure diagram at B is enlarged;

[0040] Fig.13 For the present invention Figure 5 The enlarged structure diagram at C in the middle;

[0041] Fig.14 For the present invention Figure 5 Enlarged structural diagram at point D in the middle.

[0042] Indicated in the figure:

[0043] 1. Car body; 101. Support plate; 102. Cover; 103. Third rotating rod; 2. Bracket; 3. Oil cylinder; 301. Piston rod; 302. First connecting flange; 303. Second connecting flange; 4. Sampling tube; 401. Threaded head; 402. Threaded column; 403. Threaded sleeve; 404. External thread; 5. Drill tube; 501. Spacer; 502. Gear ring; 503. Conical head; 6. First motor; 7. First rotating rod; 701. First gear; 702. Second gear; 8. Cutting plate; 801. Rack; 9. Mounting box; 901. Second rotating rod; 902. Third gear; 90 3. Cam; 10. Rotating shaft; 1001. Fixed block; 1002. Torsion spring; 11. Bending rod; 1101. Rubber ball; 12. Arc plate; 13. Connecting rod; 1301. Tooth plate; 14. Rotating sleeve; 1401. Tooth groove; 15. Second motor; 1501. Fourth gear; 16. Support cylinder; 1601. Arc stop plate; 17. Drain sleeve; 18. Water tank; 19. Water pump; 1901. Water inlet pipe; 1902. Water outlet pipe; 20. Support sleeve; 2001. Spring; 21. Positioning plate; 2101. Positioning pile; 22. Stop cylinder; 2201. Fourth rotating rod; 23. Belt. DETAILED DESCRIPTION

[0044] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0045] like Figures 1 to 7As shown, the present embodiment proposes a geological survey drilling device for geotechnical engineering design, comprising a vehicle body 1, a bracket 2 arranged on the top of the vehicle body 1, and a propulsion mechanism arranged on the bracket 2, characterized in that it also includes a drill rod, a drill bit and a knocking assembly: the drill rod is arranged at the output end of the propulsion mechanism, the drill rod includes a plurality of sampling tubes 4 and a locking assembly arranged between two adjacent sampling tubes 4, the locking assembly can fix two adjacent sampling tubes 4 along the axis of the drill rod in both positive and negative directions, the drill bit includes a drill barrel 5 arranged at the bottom of the drill rod, a conical head 503 arranged at the bottom of the drill barrel 5, a feed port opened in the middle of the drill barrel 5 and the conical head 503 and connected to the drill rod, a spacer 501 arranged inside the drill barrel 5, a plurality of cutting plates 8 equidistantly slidably arranged on the side wall of the spacer 501, and a driving assembly arranged inside the drill barrel 5 for driving the plurality of cutting plates 8 to reciprocate along the axis direction of the drill barrel 5 to open and close the feed port, and the knocking assembly is arranged on the bracket 2, and the knocking assembly can strike the outside of the drill rod during the vertical movement of the drill rod driven by the propulsion mechanism;

[0046] When it is necessary to collect soil samples, several sampling tubes 4 are assembled into a drill rod of appropriate length through the locking assembly as needed, and the drill rod is transported to the designated position through the vehicle body 1, and then the drill rod and the drill bit are driven to be inserted into the soil layer through the provided propulsion mechanism. At this time, the soil will be squeezed into several sampling tubes 4 under pressure, and after multiple sampling tubes 4 are connected through the locking assembly, even if the sampling tubes 4 are subjected to friction in different directions, they will get closer and closer and will not loosen, thereby improving the stability of the drill rod, and then the provided driving assembly is used to drive several cutting plates 8 to move toward the axis of the drill tube 5, which can not only cut off the soil core in the drill tube 5 from the external soil layer, but also seal the drill tube 5. Therefore, when the drill rod is driven upward to move out of the soil layer through the propulsion mechanism, the soil core inside the sampling tube 4 will not only not be cut off due to contact with the outside The sampling tube 4 is connected to the soil layer and pulled out, and it will not slide out of the sampling tube 4 due to the effect of gravity, so that the soil core can be collected, and the soil core can be prevented from slipping during the upward movement of the drill rod and failing to be collected thoroughly. After the drill rod is moved out of the soil layer, the multiple sampling tubes 4 that make up the drill rod are separated by the set locking assembly, which can not only divide the soil core into multiple small sections for subsequent detection, but also prevent the soil core from being broken and dispersed when it is taken out from the entire drill rod due to being too long or loose. In addition, when the drill rod is moved out of the soil layer, the outside of the drill rod can be struck by the set knocking assembly, so that the soil core inside the sampling tube 4 is separated from the inner wall of the sampling tube, preventing part of the soil core from being unable to be poured out due to adhesion to the inner wall of the sampling tube 4 due to moisture, thereby facilitating the rapid and stable removal of the soil core from the sampling tube 4.

[0047] Specifically, Figure 6 and Figure 7As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the driving assembly includes a first motor 6 arranged on the inner top wall of the drill tube 5, a plurality of first rotating rods 7 rotatably arranged on the inner wall of the drill tube 5, a gear ring 502 rotatably arranged on the inner side wall of the spacer 501, a first gear 701 and a second gear 702 arranged on the first rotating rod 7, and a rack 801 arranged on the top of the cutting plate 8 and slidably connected to the spacer 501, wherein the output shaft of the first motor 6 is connected to a first rotating rod 7, the first gear 701 is meshed with the gear ring 502, and the second gear 702 is meshed with the rack 801;

[0048] It should be noted that after the drill rod and the drill bit are pressed into the soil layer, the first motor 6 can be started by a power switch arranged on the vehicle body 1 and connected to the signal of the first motor 6. The first motor 6 will drive a first rotating rod 7 to rotate, and the first rotating rod 7 will drive the ring gear 502 to rotate through the first gear 701. The ring gear 502 will drive other first rotating rods 7 with the first gear 701 to rotate at the same time, and then the cutting plate 8 with the rack 801 can be driven to move at the same time through the second gear 702, thereby completing the opening and closing of the feed port in the drill tube 5 and preventing the soil core from slipping out of the sampling tube 4.

[0049] like Figure 1 , Figure 3 , Figure 5 , Fig.13 and Fig.14 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the propulsion mechanism includes an oil cylinder 3 arranged at the top of the bracket 2, a piston rod 301 arranged at the output end of the oil cylinder 3, a first connecting flange 302 arranged at the bottom of the piston rod 301, and a second connecting flange 303 arranged at the top of the drill pipe 5, wherein the uppermost sampling barrel 4 constituting the drill pipe is connected to the piston rod 301 through the first connecting flange 302, and the lowermost sampling barrel 4 constituting the drill pipe is connected to the top of the drill pipe 5 through the second connecting flange 303;

[0050] The locking assembly includes a threaded head 401 disposed on the top of the sampling barrel 4, an internal thread disposed on the inner wall of the bottom of the sampling barrel 4 and matched with the threaded head 401, an external thread 404 disposed on the outer wall of the bottom of the sampling barrel 4, a threaded sleeve 403 threadedly disposed on the external thread 404, and a threaded column 402 disposed on the outside of the sampling barrel 4 near the top and matched with the threaded sleeve 403, wherein the screwing direction of the threaded head 401 is opposite to the screwing direction of the threaded sleeve 403;

[0051] It should be noted that when the drill pipe needs to be assembled, the threaded head 401 at the top of one sampling tube 4 is screwed into the bottom of another sampling tube 4, and then the threaded sleeve 403 on the outside of the upper sampling tube 4 is screwed into the threaded column 402 on the outside of the lower sampling tube 4, so that the two adjacent sampling tubes 4 can be locked and fixed from two different directions, and finally the uppermost sampling tube 4 is connected to the piston rod 301 through the first connecting flange 302, and the lowermost sampling tube 4 is connected to the drill bit through the second connecting flange 303, and then the oil cylinder 3 can be started to work, and the piston rod 3 01 drives the drill rod and the drill bit to be pressed into the soil layer for sampling. At this time, even if the sampling tube 4 is subjected to friction in different directions, it will get closer and closer and will not loosen. Compared with the prior art in which the drill rod is only connected to the propulsion mechanism by a conventional threaded connection, the locking method of this scheme can improve the stability of the drill rod. After the collection is completed, the multiple sampling tubes 4 are separated by the locking assembly, which can not only divide the soil core into multiple small sections for subsequent detection, but also avoid the problem of breakage and dispersion of the soil core due to being too long or loose when taking it out from the entire drill rod.

[0052] like Figure 4 , Figure 8 and Fig.12 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the knocking assembly includes an installation box 9 arranged between the top of the vehicle body 1 and the side wall of the bracket 2, movable grooves opened on both sides of the installation box 9, a rotating shaft 10 rotatably arranged on the top of the vehicle body 1 and extending into the movable groove, a plurality of curved rods 11 sleeved on the outer wall of the rotating shaft 10, a rubber ball 1101 rollingly arranged on the end of the curved rod 11 away from the rotating shaft 10, a fixing block 1001 arranged on the outer wall of the rotating shaft 10 close to the bottom, a torsion spring 1002 sleeved on the rod wall of the rotating shaft 10 between the vehicle body 1 and the fixing block 1001, and a toggle assembly arranged inside the installation box 9;

[0053] The toggle assembly includes an arc plate 12 arranged on the top of the rotating shaft 10, a second rotating rod 901 rotatably arranged on the inner side wall of the installation box 9, a third gear 902 and a cam 903 arranged on the rod wall of the second rotating rod 901, a connecting rod 13 arranged on the side wall of the first connecting flange 302, and a toothed plate 1301 arranged on the top of the connecting rod 13 and extending to the inside of the installation box 9 to mesh with the third gear 902, and the cam 903 cooperates with the arc plate 12;

[0054] It should be noted that when the drill rod is moved upward out of the soil layer after sampling, the drill rod will drive the second rotating rod 901 provided with the third gear 902 to rotate through the tooth plate 1301, and the second rotating rod 901 will drive the cam 903 to rotate. When the small head part of the cam 903 contacts the arc plate 12, it will squeeze the arc plate 12 and the rotating shaft 10 to rotate and cause the torsion spring 1002 to twist. When the small head part of the cam 903 is separated from the arc plate 12, the torsion spring 1002 will drive the rotating shaft 10 to reverse and reset. Therefore, the rotating shaft 10 will drive the rubber ball 1101 through the curved rod 11 to continuously hit the outside of the drill rod, causing the sampling tube 4 to vibrate, so that the soil core inside the sampling tube 4 is separated from the inner wall of the sampling tube 4, to prevent part of the soil core from being attached to the inner wall of the sampling tube 4 due to moisture and unable to be poured out, thereby facilitating the removal of the soil core.

[0055] like Figure 3 , Fig. 9 and Fig.11 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a support plate 101 is provided at the front side of the vehicle body 1, and a limiting assembly is provided at the top of the support plate 101, the limiting assembly includes a rotating sleeve 14 rotatably provided at the top of the support plate 101, a tooth groove 1401 provided on the outer wall of the rotating sleeve 14, a second motor 15 provided at the top of the support plate 101, a fourth gear 1501 provided on the output shaft of the second motor 15 and meshing with the tooth groove 1401, a plurality of support cylinders 16 equidistantly provided at the top of the rotating sleeve 14, and an arc-shaped limiting plate 1601 provided at the top of the support cylinder 16, a cover body 102 is installed at the top of the support plate 101, and grooves for vertical movement of the drill rod and the drill bit are provided on the surfaces of the support plate 101 and the cover body 102, in addition, batteries for powering the first motor 6 and the second motor 15 are provided inside the drill barrel 5 and on the support plate 101, so as to keep the first motor 6 and the second motor 15 working normally, and a power switch for starting the first motor 6 and the second motor 15 is also provided on the vehicle body 1;

[0056] A water tank 18 and a water pump 19 are arranged on the top of the vehicle body 1, a drainage sleeve 17 is fixedly connected to the top of the support plate 101, a flow cavity connected to the support cylinder 16 is arranged inside the rotating sleeve 14 and the arc-shaped limiting plate 1601, and a plurality of drainage grooves are provided on the inner surface of the arc-shaped limiting plate 1601, the rotating sleeve 14 is rotatably connected to the inner wall of the drainage sleeve 17, a plurality of water outlet holes are provided on the inner wall of the drainage sleeve 17, a plurality of water inlet holes are provided on the outer wall of the rotating sleeve 14 located inside the drainage sleeve 17, a water inlet pipe 1901 is arranged between the input end of the water pump 19 and the water tank 18, and a water outlet pipe 1902 is arranged between the output end of the water pump 19 and the drainage sleeve 17;

[0057] It should be noted that, during the process of the drill rod being drilled into the soil layer, the second motor 15 can also be started to drive the fourth gear 1501 connected to its output end to rotate. The fourth gear 1501 will drive the rotating sleeve 14 provided with the tooth groove 1401 to rotate, and then drive the arc-shaped limit plates 1601 on the top of the support tube 16 to rotate at high speed. When the drill rod moves downward and deviates slightly, the drill rod will touch the inner wall of the arc-shaped limit plate 1601. At this time, the high-speed rotating arc-shaped limit plate 1601 will block and limit the deviated drill rod, and the drill rod will be squeezed to a vertical position under the high-speed friction force. Among them, the diameter of the limit ring formed by the multiple arc-shaped limit plates 1601 is the same as the diameter of the threaded sleeve 403 on the sampling tube 4, which makes it easy to limit the moving drill rod and prevent the drill rod from moving. The deviation affects the soil sample collection. When the drill rod is moved out of the soil layer after soil sample collection, the water pump 19 can be started to pass water into the drainage sleeve 17 through the water inlet pipe 1901 and the water outlet pipe 1902, and then enter the flow cavity inside the rotating sleeve 14 through the water outlet and the water inlet. Because the rotating sleeve 14 is rotatably connected to the inner wall of the drainage sleeve 17, the drainage sleeve 17 will not rotate with the rotating sleeve 14, and will not affect the drainage. Finally, it is sprayed toward the drill rod from the drainage groove on the inner surface of the arc-shaped limit plate 1601 through the support tube 16, which can not only flush away the soil attached to the outside of the drill rod, but also the rotating arc-shaped limit plate 1601 will scrape off the soil attached to the outside of the drill rod, thereby keeping the surface of the drill rod clean, which is not only convenient for the subsequent removal of the soil core, but also convenient for the subsequent soil sample collection work.

[0058] like Figure 1 , Figure 2 and Fig.10 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the side walls at both ends of the vehicle body 1 are further provided with a support assembly, and the support assembly includes a third rotating rod 103 rotatably arranged on the side walls at both ends of the vehicle body 1, a support sleeve 20 arranged on the outer wall of the third rotating rod 103, a positioning plate 21 slidably arranged inside the supporting sleeve 20, a spring 2001 arranged between the positioning plate 21 and the inner wall of the supporting sleeve 20, a positioning pile 2101 arranged at the bottom of the positioning plate 21, a limiting cylinder 22 arranged on the outer wall of the installation box 9, a fourth rotating rod 2201 passing through the limiting cylinder 22 and the installation box 9 and connected to the second rotating rod 901, and a belt 23 transmitted between the third rotating rod 103 and the fourth rotating rod 2201;

[0059] It should be noted that, in the process of the drill rod being pressed into the soil layer, the toothed plate 1301 at the top of the drill rod will also drive the second rotating rod 901 provided with the third gear 902 to rotate, and the second rotating rod 901 will drive the fourth rotating rod 2201 to rotate, and then drive the third rotating rod 103 to rotate through the belt 23. At this time, the third rotating rod 103 will drive the support sleeve 20 to flip, so that the positioning plate 21 contacts the ground, and the positioning pile 2101 will penetrate into the soil to improve the stability of the support sleeve 20, so that the front side of the vehicle body 1 can be supported, the stability of the overall equipment is improved, and the drill rod is prevented from being pressed into the soil layer. The vibration causes the equipment to shake, and when the third rotating rod 103 is still rotating after the positioning plate 21 contacts the ground, the positioning plate 21 will be pressed to slide into the inside of the support sleeve 20, thereby not affecting the flipping of the support sleeve 20.

[0060] The working principle of the present invention is as follows: when it is necessary to collect soil samples, several sampling tubes 4 are assembled into a drill rod of appropriate length through the locking assembly as needed, and then the drill rod is transported to the designated position through the vehicle body 1. When the drill rod needs to be assembled, the threaded head 401 at the top of one sampling tube 4 is screwed into the bottom of another sampling tube 4, and then the threaded sleeve 403 on the outside of the upper sampling tube 4 is screwed into the threaded column 402 on the outside of the lower sampling tube 4, so that the two adjacent sampling tubes 4 can be locked and fixed from two different directions, and then the assembled drill rod is installed on the piston rod 301, and then the oil cylinder 3 can be started to work, and the drill rod and the drill bit are driven by the piston rod 301 to press into the soil layer for sampling. At this time, even if the sampling tube 4 is subjected to friction in different directions, it will get closer and closer and will not loosen. Compared with the prior art in which the drill rod is connected to the propulsion mechanism only by a conventional threaded connection method, the locking method of this scheme can improve the stability of the drill rod. At this time, the soil will be squeezed into several sampling tubes 4 under pressure, and then the first motor 6 will be started to drive a first rotating rod 7 to rotate. The first rotating rod 7 will drive the ring gear 502 to rotate through the first gear 701, and the ring gear 502 will drive other first rotating rods 7 with the first gear 701 to rotate at the same time, and then the cutting plate 8 with the rack 801 can be driven by the second gear 702 to move toward the axis of the drill tube 5 at the same time, which can not only cut off the soil core in the drill tube 5 from the external soil layer, but also seal the drill tube 5. Therefore, when the drill rod is driven to move upward out of the soil layer through the propulsion mechanism, the soil core inside the sampling tube 4 will not only not be pulled out of the sampling tube 4 due to the connection with the external soil layer, but also will not slide out of the sampling tube 4 due to the action of gravity, so that the soil core can be collected, preventing the soil core from slipping during the upward movement of the drill rod and failing to collect it completely. When the sampling is finished, the drill rod is driven out of the soil layer by the oil cylinder 3, and the multiple sampling tubes 4 are separated by the locking assembly. Not only can the soil core be divided into multiple small sections for subsequent detection, but also the soil core will not be broken and scattered due to being too long or loose when it is taken out from the entire drill rod. And when the drill rod is moved upward out of the soil layer after sampling, the drill rod will drive the second rotating rod 901 provided with the third gear 902 to rotate through the tooth plate 1301, and the second rotating rod 901 will drive the cam 903 to drive the rotating shaft 10 to rotate back and forth, and then drive the rubber ball 1101 to continuously hit the outside of the drill rod through the curved rod 11, so that the sampling tube 4 vibrates, so that the soil core inside the sampling tube 4 is separated from the inner wall of the sampling tube 4, and part of the soil core is prevented from being attached to the inner wall of the sampling tube 4 due to moisture and cannot be poured out, so as to facilitate the removal of the soil core.In addition, when the drill rod is drilled into the soil layer, the second motor 15 can also be started to work, and the rotating sleeve 14 with the tooth groove 1401 can be driven to rotate through the fourth gear 1501, which can then drive the arc-shaped limit plates 1601 on the top of the several support tubes 16 to rotate at high speed. Therefore, when the drill rod moves downward and deviates slightly, the drill rod will touch the inner wall of the arc-shaped limit plate 1601, and the high-speed rotating arc-shaped limit plate 1601 will block and limit the deviated drill rod, and the drill rod will be squeezed into a vertical position under the high-speed friction force, which is convenient for limiting the moving drill rod and preventing the drill rod from deviating when moving and affecting soil sampling. and when the drill rod is moved out of the soil layer after soil sampling, the water pump 19 can be started to pass water into the drainage sleeve 17 through the water inlet pipe 1901 and the water outlet pipe 1902, and then enter the flow cavity inside the rotating sleeve 14 through the water outlet and the water inlet, and finally pass through the support tube 16 from the drainage groove on the inner surface of the arc-shaped limiting plate 1601 to spray toward the drill rod, which can not only wash away the soil attached to the outside of the drill rod, but also the rotating arc-shaped limiting plate 1601 can scrape off the soil attached to the outside of the drill rod, thereby keeping the surface of the drill rod clean, which is not only convenient for the subsequent removal of the soil core, but also convenient for the subsequent soil sampling work.

[0061] The present invention also discloses a method for using a geological survey drilling device for geotechnical engineering design, comprising the following steps:

[0062] S1: First, the drill rod is transported to a suitable position through the vehicle body 1, and then the drill rod and the drill bit are driven to be inserted into the soil through the provided propulsion assembly. The soil will be squeezed into several sampling tubes 4 under pressure, and then the first motor 6 is started to drive a first rotating rod 7 in the drill tube 5 to rotate, and then the gear ring 502 can be driven to rotate through the first gear 701, and the gear ring 502 will drive several first rotating rods 7 provided with the first gear 701 to rotate together. At this time, several first rotating rods 7 will continue to drive the cutting plate 8 provided with the rack 801 to move toward the axis of the drill tube 5 through the second gear 702, and the feed port inside the drill tube 5 can be sealed while the soil core in the drill tube 5 can be cut off from the outside soil, and then the drill rod is driven to move upward out of the soil layer through the propulsion mechanism;

[0063] S2: When the drill rod is moved upward, the toothed plate 1301 arranged at the top of the drill rod can drive the second rotating rod 901 provided with the third gear 902 to rotate, and the second rotating rod 901 will drive the cam 903 to rotate continuously, and cooperate with the torsion spring 1002 and the arc plate 12 arranged on the rotating shaft 10 to drive the rotating shaft 10 to rotate back and forth, and then the rubber ball 1101 on the curved rod 11 can continuously hit the outside of the drill rod, so that the sampling tube 4 vibrates, so that the soil core inside the sampling tube is separated from its inner wall;

[0064] S3: After the drill rod with the soil core is removed from the soil layer, the threaded sleeve 403 on the outside of the upper sampling tube 4 can be rotated to move upward to disengage from the threaded column 402 on the outside of the lower sampling tube 4, and then the lower sampling tube 4 can be reversed to disengage the threaded head 401 from the bottom of the upper sampling tube 4, completing the disassembly of the two adjacent sampling tubes 4. By continuing to implement the above operations, all the sampling tubes 4 constituting the drill rod can be disassembled, and then the soil core in each sampling tube 4 can be taken out;

[0065] S4: And when the drill rod is pressed into the soil by the propulsion mechanism, the second motor 15 can also be started to work, and the rotating sleeve 14 with the tooth groove 1401 can be driven to rotate through the fourth gear 1501. At this time, several arc-shaped limit plates 1601 on the top of the rotating sleeve 14 will rotate at high speed around the outside of the drill rod. When the vertical movement of the drill rod is slightly offset, it will touch the arc-shaped limit plate 1601. At this time, the high-speed rotating arc-shaped limit plate 1601 will squeeze the drill rod to a vertical position. When the drill rod is taken out after sampling, the water pump 19 can also be started to discharge water into the drainage sleeve 17. The water will continue to enter the flow cavity inside the rotating sleeve 14, and pass through the support tube 16 to spray from the inner side of the arc-shaped limit plate 1601 to the drill rod, thereby flushing the soil attached to the outside of the drill rod.

[0066] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; all technical solutions and improvements that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A geological survey drilling device for geotechnical engineering design, comprising a vehicle body (1), a bracket (2) arranged on the top of the vehicle body (1), and a propulsion mechanism arranged on the bracket (2), characterized in that: Also includes: A drill rod is arranged at the output end of the propulsion mechanism, the drill rod comprising a plurality of sampling barrels (4) and a locking assembly arranged between two adjacent sampling barrels (4), the locking assembly being capable of fixing the two adjacent sampling barrels (4) in both positive and negative directions along the axis of the drill rod; A drill bit, comprising a drill barrel (5) arranged at the bottom of a drill rod, a conical head (503) arranged at the bottom of the drill barrel (5), a feed port opened in the middle of the drill barrel (5) and the conical head (503) and connected to the drill rod, a spacer (501) arranged inside the drill barrel (5), a plurality of cutting plates (8) equidistantly slidably arranged on the side wall of the spacer (501), and a drive assembly arranged inside the drill barrel (5) for driving the plurality of cutting plates (8) to reciprocate along the axial direction of the drill barrel (5) to open and close the feed port; A striking assembly, the striking assembly being arranged on the bracket (2), and being capable of striking the outside of the drill rod when the propulsion mechanism drives the drill rod to move vertically; The driving assembly comprises a first motor (6) arranged on the inner top wall of the drill tube (5), a plurality of first rotating rods (7) rotatably arranged on the inner wall of the drill tube (5), a gear ring (502) rotatably arranged on the inner side wall of the spacer (501), a first gear (701) and a second gear (702) arranged on the first rotating rod (7), and a rack (801) arranged on the top of the cutting plate (8) and slidably connected to the spacer (501), wherein the output shaft of the first motor (6) is connected to a first rotating rod (7), the first gear (701) is meshed with the gear ring (502), and the second gear (702) is meshed with the rack (801); The locking assembly comprises a threaded head (401) arranged at the top of the sampling barrel (4), an internal thread arranged on the inner wall of the bottom of the sampling barrel (4) and cooperating with the threaded head (401), an external thread (404) arranged on the outer wall of the bottom of the sampling barrel (4), a threaded sleeve (403) threadedly arranged on the external thread (404), and a threaded column (402) arranged near the top of the sampling barrel (4) and cooperating with the threaded sleeve (403), wherein the screwing direction of the threaded head (401) is opposite to the screwing direction of the threaded sleeve (403).

2. A geological survey drilling device for geotechnical engineering design according to claim 1, characterized in that: The propulsion mechanism comprises an oil cylinder (3) arranged at the top of the support (2), a piston rod (301) arranged at the output end of the oil cylinder (3), a first connecting flange (302) arranged at the bottom of the piston rod (301), and a second connecting flange (303) arranged at the top of a drill tube (5), wherein the uppermost sampling tube (4) constituting the drill tube is connected to the piston rod (301) via the first connecting flange (302), and the lowermost sampling tube (4) constituting the drill tube is connected to the top of the drill tube (5) via the second connecting flange (303).

3. A geological survey drilling device for geotechnical engineering design according to claim 1, characterized in that: The striking assembly comprises a mounting box (9) arranged between the top of the vehicle body (1) and the side wall of the bracket (2), movable grooves provided on both sides of the mounting box (9), a rotating shaft (10) rotatably arranged on the top of the vehicle body (1) and extending into the movable groove, a plurality of curved rods (11) sleeved on the outer wall of the rotating shaft (10), a rubber ball (1101) rotatably arranged at an end of the curved rod (11) away from the rotating shaft (10), a fixing block (1001) arranged on the outer wall of the rotating shaft (10) close to the bottom, a torsion spring (1002) sleeved on the rod wall of the rotating shaft (10) between the vehicle body (1) and the fixing block (1001), and a toggle assembly arranged inside the mounting box (9).

4. A geological survey drilling device for geotechnical engineering design according to claim 3, characterized in that: The toggle assembly comprises an arc plate (12) arranged at the top of the rotating shaft (10), a second rotating rod (901) rotatably arranged on the inner side wall of the installation box (9), a third gear (902) and a cam (903) arranged on the rod wall of the second rotating rod (901), a connecting rod (13) arranged on the side wall of the first connecting flange (302), and a toothed plate (1301) arranged at the top of the connecting rod (13) and extending to the inside of the installation box (9) to mesh with the third gear (902), wherein the cam (903) cooperates with the arc plate (12).

5. A geological survey drilling device for geotechnical engineering design according to claim 1, characterized in that: A support plate (101) is arranged at the front side of the vehicle body (1), and a limit assembly is arranged at the top of the support plate (101), the limit assembly comprising a rotating sleeve (14) rotatably arranged at the top of the support plate (101), a tooth groove (1401) arranged on the outer wall of the rotating sleeve (14), a second motor (15) arranged at the top of the support plate (101), a fourth gear (1501) arranged on the output shaft of the second motor (15) and meshing with the tooth groove (1401), a plurality of support cylinders (16) equidistantly arranged at the top of the rotating sleeve (14), and an arc-shaped limit plate (1601) arranged at the top of the support cylinder (16), and a cover body (102) is installed at the top of the support plate (101), and grooves for vertical movement of a drill rod and a drill bit are provided on the surfaces of the support plate (101) and the cover body (102).

6. A geological survey drilling device for geotechnical engineering design according to claim 5, characterized in that: A water tank (18) and a water pump (19) are arranged on the top of the vehicle body (1); a drainage sleeve (17) is fixedly connected to the top of the support plate (101); a flow cavity connected to the support cylinder (16) is arranged inside the rotating sleeve (14) and the arc-shaped limiting plate (1601); a plurality of drainage grooves are arranged on the inner surface of the arc-shaped limiting plate (1601); the rotating sleeve (14) is rotatably connected to the inner wall of the drainage sleeve (17); a plurality of water outlet holes are arranged on the inner wall of the drainage sleeve (17); a plurality of water inlet holes are arranged on the outer wall of the rotating sleeve (14) located inside the drainage sleeve (17); a water inlet pipe (1901) is arranged between the input end of the water pump (19) and the water tank (18); and a water outlet pipe (1902) is arranged between the output end of the water pump (19) and the drainage sleeve (17).

7. A geological survey drilling device for geotechnical engineering design according to claim 4, characterized in that: The side walls at both ends of the vehicle body (1) are further provided with support assemblies, the support assemblies comprising a third rotating rod (103) rotatably arranged on the side walls at both ends of the vehicle body (1), a support sleeve (20) arranged on the outer wall of the third rotating rod (103), a positioning plate (21) slidably arranged inside the support sleeve (20), a spring (2001) arranged between the positioning plate (21) and the inner wall of the support sleeve (20), a positioning pile (2101) arranged at the bottom of the positioning plate (21), a limiting cylinder (22) arranged on the outer wall of the installation box (9), a fourth rotating rod (2201) passing through the limiting cylinder (22) and the installation box (9) and connected to the second rotating rod (901), and a belt (23) arranged between the third rotating rod (103) and the fourth rotating rod (2201) for transmission.

8. A method for using a geological survey drilling device for geotechnical engineering design according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: First, the drill rod is transported to a suitable position through the vehicle body (1), and then the drill rod and the drill bit are driven to be inserted into the soil through the provided propulsion assembly. The soil is squeezed into the interior of the plurality of sampling tubes (4) under pressure. Then, the first motor (6) is started to drive a first rotating rod (7) in the drill tube (5) to rotate, and then the gear ring (502) is driven to rotate through the first gear (701). The gear ring (502) then drives a plurality of first rotating rods (7) provided with the first gear (701) to rotate together. At this time, the plurality of first rotating rods (7) continue to drive the cutting plate (8) provided with the rack (801) to move toward the axis of the drill tube (5) through the second gear (702), thereby sealing the feed port inside the drill tube (5) and cutting off the soil core in the drill tube (5) from the outside soil. Then, the drill rod is driven upward to move out of the soil layer through the propulsion mechanism; S2: When the drill rod is moved upward, the toothed plate (1301) disposed at the top of the drill rod drives the second rotating rod (901) provided with the third gear (902) to rotate, and the second rotating rod (901) drives the cam (903) to rotate continuously, and cooperates with the torsion spring (1002) and the arc plate (12) disposed on the rotating shaft (10) to drive the rotating shaft (10) to rotate back and forth, and then the rubber ball (1101) on the curved rod (11) continuously strikes the outside of the drill rod, causing the sampling tube (4) to vibrate, so that the soil core inside the sampling tube is separated from its inner wall; S3: After the drill rod containing the soil core is removed from the soil layer, the threaded sleeve (403) on the outside of the upper sampling tube (4) is rotated to move upward and disengage from the threaded column (402) on the outside of the lower sampling tube (4), and then the lower sampling tube (4) is reversed to disengage the threaded head (401) from the bottom of the upper sampling tube (4), thereby completing the disassembly of the two adjacent sampling tubes (4), disassembling all the sampling tubes (4) constituting the drill rod, and then taking out the soil core in each sampling tube (4); S4: When the drill rod is pressed into the soil by the propulsion mechanism, the second motor (15) is started to work, and the rotating sleeve (14) provided with the tooth groove (1401) is driven to rotate through the fourth gear (1501). At this time, a plurality of arc-shaped limit plates (1601) on the top of the rotating sleeve (14) will rotate at high speed around the outside of the drill rod. When the drill rod moves vertically and slightly deviates, it will touch the arc-shaped limit plates (1601). At this time, the arc-shaped limit plates (1601) rotating at high speed will squeeze the drill rod into a vertical position. When the drill rod after sampling is taken out, the water pump (19) is started to work to discharge water into the drainage sleeve (17). The water will continue to enter the flow cavity inside the rotating sleeve (14), and pass through the support tube (16) from the inner side of the arc-shaped limit plates (1601) to spray toward the drill rod, thereby flushing the soil attached to the outside of the drill rod.

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