A core sampling device for geotechnical engineering investigation

Abstract

The present invention discloses a core sampling device for geotechnical engineering investigation, specifically relating to the technical field of drilling and core sampling. It includes a drilling rig guiding frame, a support frame, a screw rod, and a synchronous interval adjustment drilling mechanism. The synchronous interval adjustment drilling mechanism includes a hinged groove block and an adjustment motor, and also includes a synchronous angle adjustment drilling mechanism and a synchronous offset distance adjustment drilling mechanism. By means of the synchronous interval adjustment drilling mechanism, the present invention has the advantages that two core sampling drill rod barrels can be synchronously and efficiently adjusted according to a specified precise interval, and the accuracy of exploration and core sampling is not only higher, but also the precise adjustment efficiency of exploration and core sampling is greatly improved, thereby solving the problems that it is difficult for two drill rods to be synchronously and precisely adjusted according to a specified interval distance, and at the same time, it is difficult for two drill rods to be synchronously and precisely adjusted according to a specified angle, resulting in poor accuracy of exploration and core sampling and low precise adjustment efficiency of exploration and core sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of core drilling, and more specifically, the present invention relates to a core sampling device for geotechnical engineering investigation. Background Art

[0002] The core sampling device for geotechnical engineering investigation plays an important role in geotechnical engineering investigation. Its main function is reflected in that the core samples obtained through the core sampling device can directly understand the structural information of the underground rock and soil, providing an important basis for geological exploration.

[0003] After retrieval in the existing published literature, the patent with the Chinese patent publication number CN215256007U discloses a core drilling rig structure for geological exploration. In this drilling rig technology, a drilling motor for driving the drill pipe is installed on the installation table, and a limiting frame for limiting the position of the drill pipe is also installed on the base. The drill pipe includes multiple spliced pipes. One end of the spliced pipe is provided with a ribbed groove, and the other end is fixedly connected with a ribbed pipe. Threaded holes are opened on the ribbed pipe and the groove wall of the ribbed groove, and the drill pipe is connected with a drill bit through bolts. This device can well apply a downward pressure to the drill pipe, so that it can also well perform the drilling and core sampling work when encountering some relatively hard rock formations. However, this drilling rig still has the following defects.

[0004] During the core sampling process of geotechnical engineering investigation, a drilling rig is needed to make the drill pipe enter the core sampling soil in the geotechnical area. After drilling the soil, the core body at the position of the soil is extracted. In order to ensure the accuracy of core sampling, for the core sampling positions of two different drill pipes, it is necessary to measure the interval distance between the core sampling positions of the two different drill pipes, and at the same time, it is also necessary to measure the specific angular positions of the core sampling positions of the two different drill pipes, as well as the offset distance between the core sampling positions of the two different drill pipes. In this way, it is necessary to measure the positions one by one with tools and then adjust each position one by one, resulting in a low adjustment efficiency. It is difficult to synchronously and accurately adjust the two drill pipes according to the specified interval distance, and at the same time, it is difficult to synchronously and accurately adjust the two drill pipes according to the specified angle, and it is also difficult to synchronously and accurately adjust the two drill pipes according to the specified offset distance. The accuracy of exploration and core sampling is not only poor, but also the accuracy adjustment efficiency of exploration and core sampling is low. Therefore, a core sampling device for geotechnical engineering investigation is needed. Summary of the Invention

[0005] In order to overcome the above defects of the prior art, the present invention provides the following technical solution: a core-taking device for geotechnical engineering investigation, including a drilling rig guiding frame, a support frame and a screw rod. The support frame is fixed on one side of the drilling rig guiding frame. The screw rod is rotatably connected to the inner wall of the support frame, and a synchronous interval adjustment drilling mechanism is arranged on the outer wall of the screw rod. The synchronous interval adjustment drilling mechanism includes an articulated groove block threadedly arranged on the outer wall of the screw rod. One end of the support frame is fixedly connected with an adjustment motor for driving the screw rod to rotate, and the articulated groove block is slidably connected with the support frame. Fixed connection shafts are fixedly connected to the inner walls on both sides of the articulated groove block. A sleeve rod is rotatably connected to the outer wall of each fixed connection shaft. A linkage shaft is rotatably connected to the inner wall of the sleeve rod at a position far from the fixed connection shaft. A concave block is fixedly installed at the top of the linkage shaft. A guiding sleeve block is fixedly connected to one side of the concave block, and the guiding sleeve block is slidably connected with the drilling rig guiding frame. A displacement rotating shaft is rotatably connected to the inner wall of the guiding sleeve block.

[0006] Preferably, the output end of the adjustment motor is fixedly connected to the screw rod. The two fixed connection shafts are symmetrically arranged with respect to the articulated groove block. The cross-sectional shapes of the fixed connection shaft and the linkage shaft are both circular. The concave block is slidably connected with the drilling rig guiding frame, and the vertical cross-sectional shape of the concave block is concave. A guiding column is fixedly installed on one side of the inner wall of the drilling rig guiding frame. Both guiding sleeve blocks are slidably connected with the guiding column. An induction block is fixedly connected to one side of the guiding sleeve block. A spacing distance sensor is arranged on one side of the induction block, and the spacing distance sensor is fixedly connected to the other guiding sleeve block.

[0007] When this technology is in use, the adjustment motor drives the screw rod to rotate. The articulated groove block drives the two fixed connection shafts to move backward synchronously. The fixed connection shaft drives one end of the sleeve rod to move backward, and the other end of the sleeve rod drives the linkage shaft to move rightward. The sleeve rod rotates on the linkage shaft, and the other concave block moves leftward. The limiting sleeve block drives the concave slide bar to move rightward. The L-shaped rack will drive the sliding sleeve block to move rightward along the outer wall of the linkage slide bar. The displacement rotating shaft will drive the linkage gear to move rightward synchronously. The guiding sleeve block moves rightward along the outer wall of the guiding column. The displacement rotating shaft drives the displacement disc to move rightward. The moving frame makes the transmission screw rod move rightward. The threaded sleeve block drives the rotary drilling rig to move rightward. At the same time, the rotary drilling rig drives the core-taking drill barrel rod to move rightward, and the other core-taking drill barrel rod moves leftward. When the distance value sensed by the spacing distance sensor is the same as the distance value set by the controller, the controller turns off the adjustment motor.

[0008] Preferably, a pressing plate is fixedly connected to the top end of the drilling rig guiding frame, and the supporting frame is fixedly connected to the pressing plate. An extrusion electric cylinder is fixedly installed on the upper surface of the pressing plate, and the outer wall of the output end of the extrusion electric cylinder is slidably connected with a mounting sleeve plate; a storage battery is fixedly connected to the upper surface of the mounting sleeve plate near one of its corner lines, and a controller is fixedly installed on the upper surface of the storage battery. Guide rods are arranged on both sides of the extrusion electric cylinder, and both of the guide rods are slidably connected with the mounting sleeve plate; both of the guide rods are fixedly connected to the drilling rig guiding frame. A synchronous angle adjustment drilling mechanism is arranged on the other side of the drilling rig guiding frame. The synchronous angle adjustment drilling mechanism includes a socket block fixedly arranged on the other side of the drilling rig guiding frame; a linkage electric cylinder is fixedly installed on one side of the socket block, and the outer wall of the output end of the linkage electric cylinder is slidably connected with the socket block. The output end of the linkage electric cylinder is fixedly installed with a pushing block, and a pushing frame is fixedly connected to one side of the pushing block. A linkage sliding rod is fixedly connected to one side of the inner wall of the pushing frame; two sliding sleeve blocks are slidably connected to the outer wall of the linkage sliding rod. An L-shaped rack is fixedly connected to one side of each sliding sleeve block. A concave sliding strip is fixedly connected to one side of the L-shaped rack. A limiting sleeve block is slidably connected to the outer wall of the concave sliding strip. The limiting sleeve block is slidably connected to the L-shaped rack. The limiting sleeve block is fixedly connected to the guiding sleeve block; the other side of the L-shaped rack is meshed and driven with a linkage gear, and the linkage gear is fixedly connected to a displacement rotating shaft. An angle sensor is fixedly installed at the top end of the displacement rotating shaft, and a support frame is installed on one side of the angle sensor. Both the guiding sleeve block and the angle sensor are fixedly connected to the support frame. Both of the sliding sleeve blocks are slidably connected to the pushing frame, and the outer walls of the sliding sleeve blocks and the inner wall of the pushing frame are smooth surfaces. The limiting sleeve block is rotatably connected to the linkage gear, and the upper surface of the linkage gear is a smooth surface. The output end of the angle sensor is coaxially arranged with the displacement rotating shaft, and the cross-sectional shape of the L-shaped rack is L-shaped.

[0009] When this technology is in use, the linkage electric cylinder pushes the pushing frame forward. The linkage sliding rod drives the two sliding sleeve blocks forward. The L-shaped rack drives the concave sliding strip forward. The guiding sleeve block can support the limiting sleeve block. The L-shaped rack drives the linkage gear to rotate clockwise, and the other linkage gear also rotates clockwise synchronously. The displacement rotating shaft rotates clockwise inside the guiding sleeve block. The displacement disc makes the moving frame rotate clockwise. The transmission screw rod drives the threaded sleeve block to rotate clockwise. The rotary drilling rig drives the core drilling barrel rod to rotate clockwise. When the angle value set by the angle sensor is the same as the adjustment angle value set by the controller, the linkage electric cylinder is closed by the controller.

[0010] Preferably, a synchronous offset distance adjustment drilling mechanism is provided at the bottom end of the displacement rotating shaft. The synchronous offset distance adjustment drilling mechanism includes a displacement disc fixedly arranged at the bottom end of the displacement rotating shaft; a moving frame is fixedly connected to the lower surface of the displacement disc, and a transmission screw rod is rotatably connected inside the moving frame. One end of the transmission screw rod is fixedly installed with a transmission motor for driving the transmission screw rod to rotate, and the transmission motor is fixedly connected to the moving frame; a threaded sleeve block is threadedly connected to the outer wall of the transmission screw rod, and an induction support block is fixedly connected to one side of the threaded sleeve block. A moving distance sensor is provided on one side of the induction support block, and the moving distance sensor is fixedly connected to the moving frame; a rotary drill is fixedly installed on the lower surface of the threaded sleeve block, and a core drilling barrel rod is fixedly connected to the output end of the rotary drill. The induction support block is slidably connected to the moving frame, and the upper surface of the induction support block and the upper surface of the moving distance sensor are on the same horizontal plane.

[0011] When this technology is in use, the transmission motor drives the transmission screw rod to rotate, causing the transmission screw rod to drive the threaded sleeve block to move rightward under the action of the threaded transmission force. The threaded sleeve block drives the rotary drill to move rightward, and at the same time, the threaded sleeve block drives the induction support block to move rightward. The moving distance sensor senses the distance of the induction support block. When the distance value sensed by the moving distance sensor is the same as the distance value set by the controller, the two transmission motors are turned off by the controller.

[0012] The technical effects and advantages of the present invention:

[0013] 1. Through the synchronous interval adjustment drilling mechanism of the present invention, the adjustment motor drives the screw rod to rotate. The hinged groove block drives the two push shafts to move backward synchronously. The push shaft drives one end of the sleeve rod to move backward, and the other end of the sleeve rod drives the linkage shaft to move rightward. The sleeve rod rotates on the linkage shaft, and the other concave block moves leftward. The L-shaped rack drives the sliding sleeve block to move rightward along the outer wall of the linkage slide rod. The linkage shaft drives the guide sleeve block to move rightward along the inner wall of the drill guide frame. The displacement disc drives the moving frame to move rightward. The rotary drill drives the core drilling barrel rod to move rightward, and the other core drilling barrel rod moves leftward. When the distance value sensed by the distance sensor is the same as the distance value set by the controller, the adjustment motor is turned off by the controller. In this way, the two core drilling barrel rods can be synchronously and efficiently adjusted according to the specified precise spacing. The accuracy of core sampling in the geotechnical area is not only higher, but also the precise adjustment efficiency of core sampling is greatly improved.

[0014] 2. The present invention adopts a synchronous angle adjustment drilling mechanism. The linkage electric cylinder is driven to push the push frame forward. The push frame drives the linkage sliding rod forward. The sliding sleeve block drives the L-shaped rack forward. The L-shaped rack drives the concave-shaped sliding bar forward. The L-shaped rack drives the linkage gear to rotate clockwise. The linkage gear drives the displacement rotating shaft to rotate clockwise. The displacement rotating shaft rotates clockwise inside the guiding sleeve block. The rotary drill drives the core drilling barrel rod to rotate clockwise. The other core drilling barrel rod also rotates clockwise synchronously. The two core drilling barrel rods can be adjusted synchronously at a specified angle. The accuracy of exploration and core sampling is not only higher, but also the precise adjustment efficiency of exploration and core sampling is greatly improved.

[0015] 3. The present invention utilizes a synchronous offset distance adjustment drilling mechanism. Two driving motors are started. The driving motors drive the driving screw rods to rotate. The threaded sleeve block moves rightward along the inner wall of the moving frame. The threaded sleeve block drives the sensing support block to move rightward. The sensing support block approaches the moving distance sensor. When the distance value sensed by the moving distance sensor is the same as the distance value set by the controller, the two driving motors are turned off by the controller. The two core drilling barrel rods can accurately adjust the synchronous offset distance at a specified angular position. The accuracy of exploration and core sampling is not only higher, but also the precise adjustment efficiency of exploration and core sampling is greatly improved.

[0016] Due to the mutual influence of the above multiple functions, firstly, the two core drilling barrel rods can be synchronously and efficiently adjusted at a specified precise spacing. Secondly, the two core drilling barrel rods can be adjusted synchronously at a specified angle. Finally, the two core drilling barrel rods can accurately adjust the synchronous offset distance at a specified angular position. In summary, the accuracy of exploration and core sampling is not only higher, but also the precise adjustment efficiency of exploration and core sampling is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the core sampling device for geotechnical engineering exploration of the present invention.

[0018] Figure 2 It is a partial structural schematic diagram of the truncation at the connection between the support frame and the adjustment motor of the present invention.

[0019] Figure 3 It is a partial structural schematic diagram of the truncation at the connection between the linkage shaft and the sleeve rod of the present invention.

[0020] Figure 4 It is a partial bottom view structural schematic diagram of the connection between the guiding sleeve block and the sensing block of the present invention.

[0021] Figure 5 It is a rear view structural schematic diagram of the core sampling device for geotechnical engineering exploration of the present invention.

[0022] Figure 6 It is a partial structural schematic diagram of the truncation at the connection between the push frame and the push block of the present invention.

[0023] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at location A in

[0024] Figure 8 Top view partial structure schematic diagram of the connection between the guide sleeve block and the support frame of the present invention.

[0025] Figure 9 Front view partial structure schematic diagram of the synchronous offset distance adjustment drilling mechanism of the present invention.

[0026] Figure 10 Truncated partial structure schematic diagram of the connection between the threaded sleeve block and the rotary drill of the present invention.

[0027] Reference numerals are: 1, drill guide frame; 2, support frame; 3, screw; 4, adjustment motor; 5, hinged groove block; 6, push shaft; 7, sleeve rod; 8, linkage shaft; 9, concave block; 10, guide sleeve block; 11, displacement rotating shaft; 12, guide post; 13, pressing plate; 14, extrusion electric cylinder; 15, mounting sleeve plate; 16, storage battery; 17, controller; 18, guide rod; 19, induction block; 20, spacing distance sensor; 21, socket block; 22, linkage electric cylinder; 23, push block; 24, push frame; 25, linkage slide bar; 26, sliding sleeve block; 27, L-shaped rack; 28, concave slide bar; 29, limit sleeve block; 30, linkage gear; 31, angle sensor; 32, support frame; 33, displacement disc; 34, moving frame; 35, transmission screw; 36, threaded sleeve block; 37, transmission motor; 38, induction support block; 39, moving distance sensor; 40, rotary drill; 41, core drilling barrel rod. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] As shown in the attached Figure 1 -attached Figure 10 A core sampling device for geotechnical engineering investigation shown. This core sampling device for geotechnical engineering investigation has a synchronous interval adjustment drilling mechanism, a synchronous angle adjustment drilling mechanism, and a synchronous offset distance adjustment drilling mechanism. The settings of each mechanism can not only make the exploration and core sampling more accurate, but also greatly improve the precise adjustment efficiency of exploration and core sampling. The specific structural settings of each mechanism are as follows.

[0030] In this embodiment, as shown in the attached Figure 1 -attached Figure 4As shown, a synchronous interval adjustment drilling mechanism is provided on the outer wall of the screw rod 3; the synchronous interval adjustment drilling mechanism includes a hinged groove block 5 threadedly arranged on the outer wall of the screw rod 3. One end of the support frame 2 is fixedly connected with an adjustment motor 4 for driving the screw rod 3 to rotate, and the hinged groove block 5 is slidably connected to the support frame 2. Both inner walls of the hinged groove block 5 are fixedly connected with push shafts 6. The outer wall of each push shaft 6 is rotatably connected with a sleeve rod 7. The inner wall of the sleeve rod 7 is rotatably connected with a linkage shaft 8 at a position far from the push shaft 6. The top end of the linkage shaft 8 is fixedly installed with a concave block 9.

[0031] One side of the concave block 9 is fixedly connected with a guide sleeve block 10, and the guide sleeve block 10 is slidably connected to the drilling machine guide frame 1. The inner wall of the guide sleeve block 10 is rotatably connected with a displacement rotating shaft 11. The output end of the adjustment motor 4 is fixedly connected to the screw rod 3. The two push shafts 6 are symmetrically arranged with respect to the hinged groove block 5; the cross-sectional shapes of the push shaft 6 and the linkage shaft 8 are both circular. The concave block 9 is slidably connected to the drilling machine guide frame 1, and the vertical cross-sectional shape of the concave block 9 is concave. One side of the inner wall of the drilling machine guide frame 1 is fixedly installed with a guide post 12. Both guide sleeve blocks 10 are slidably connected to the guide post 12; one side of the guide sleeve block 10 is fixedly connected with an induction block 19. A spacing distance sensor 20 is provided on one side of the induction block 19, and the spacing distance sensor 20 is fixedly connected to another guide sleeve block 10.

[0032] In this embodiment, as shown in the appendix Figure 1 As shown, the top end of the drilling machine guide frame 1 is fixedly connected with a pressing plate 13, and the support frame 2 is fixedly connected to the pressing plate 13. The upper surface of the pressing plate 13 is fixedly installed with a pressing cylinder 14. The outer wall of the output end of the pressing cylinder 14 is slidably connected with a mounting sleeve plate 15; the upper surface of the mounting sleeve plate 15 is fixedly connected with a storage battery 16 near one of its corner lines. A controller 17 is fixedly installed on the upper surface of the storage battery 16. Guide rods 18 are provided on both sides of the pressing cylinder 14. Both guide rods 18 are slidably connected to the mounting sleeve plate 15; both guide rods 18 are fixedly connected to the drilling machine guide frame 1, so as to supply power to the controller 17 through the storage battery 16. The controller 17 starts the pressing cylinder 14, and the pressing cylinder 14 drives the pressing plate 13 to move downward. The pressing plate 13 causes the drilling machine guide frame 1 to move downward. The drilling machine guide frame 1 drives the two guide rods 18 to move downward in a guiding manner, and the two guide rods 18 slide downward along the inner wall of the mounting sleeve plate 15.

[0033] In this embodiment, as shown in the appendix Figure 4 -Appendix Figure 8As shown, a synchronous angle adjustment drilling mechanism is provided on the other side of the drilling rig guide frame 1, and the synchronous angle adjustment drilling mechanism includes a socket block 21 fixedly arranged on the other side of the drilling rig guide frame 1; a linkage electric cylinder 22 is fixedly installed on one side of the socket block 21, and the outer wall of the output end of the linkage electric cylinder 22 is slidably connected to the socket block 21, and a push block 23 is fixedly installed on the output end of the linkage electric cylinder 22, and a push frame 24 is fixedly connected to one side of the push block 23, and a linkage slide bar 25 is fixedly connected to one side of the inner wall of the push frame 24; two sliding sleeve blocks 26 are slidably connected to the outer wall of the linkage slide bar 25, and an L-shaped rack 27 is fixedly connected to one side of each sliding sleeve block 26, and a concave slide bar 28 is fixedly connected to one side of the L-shaped rack 27, and a limit sleeve block 29 is slidably connected to the outer wall of the concave slide bar 28, and a limit sleeve block 29 is slidably connected to the L-shaped rack 27, and the limit sleeve block 29 is fixedly connected to the guide sleeve block 10.

[0034] The other side of the L-shaped rack 27 is meshed and connected with a linkage gear 30, and the linkage gear 30 is fixedly connected to the displacement shaft 11. An angle sensor 31 is fixedly installed on the top of the displacement shaft 11, and a support frame 32 is installed on one side of the angle sensor 31. The guide sleeve 10 and the angle sensor 31 are fixedly connected to the support frame 32. Both sliding sleeves 26 are slidably connected to the push frame 24, and the outer wall of the sliding sleeve 26 and the inner wall of the push frame 24 are smooth surfaces. The limit sleeve 29 is rotationally connected to the linkage gear 30, and the upper surface of the linkage gear 30 is a smooth surface. The output end of the angle sensor 31 is coaxially arranged with the displacement shaft 11, and the cross-sectional shape of the L-shaped rack 27 is L-shaped.

[0035] In this embodiment, as shown in the attached Figure 9 - Attachment Figure 10 As shown, a synchronous offset distance adjustment drilling mechanism is provided at the bottom end of the shifting shaft 11, and the synchronous offset distance adjustment drilling mechanism includes a shifting disk 33 fixedly arranged at the bottom end of the shifting shaft 11; a moving frame 34 is fixedly connected to the lower surface of the shifting disk 33, and a transmission screw 35 is rotatably connected inside the moving frame 34, and a transmission motor 37 is fixedly installed at one end of the transmission screw 35, and the transmission motor 37 is used to drive the transmission screw 35 to rotate, and the transmission motor 37 is fixedly connected to the moving frame 34.

[0036] The outer wall of the transmission screw 35 is threadedly connected with a threaded sleeve 36, and a sensing support block 38 is fixedly connected to one side of the threaded sleeve 36. A moving distance sensor 39 is provided on one side of the sensing support block 38, and the moving distance sensor 39 is fixedly connected to the moving frame 34; a rotary drill 40 is fixedly installed on the lower surface of the threaded sleeve 36, and a coring drill rod 41 is fixedly connected to the output end of the rotary drill 40. The sensing support block 38 is slidably connected to the moving frame 34, and the upper surface of the sensing support block 38 and the upper surface of the moving distance sensor 39 are in the same horizontal plane.

[0037] The working principle of the core sampling device for geotechnical engineering investigation of the present invention is as follows:

[0038] First, when the present invention performs synchronous interval adjustment drilling, first place the mounting sleeve plate 15 at the core sampling position in the geotechnical area. By inserting nails into the holes of the mounting sleeve plate 15, the fixing operation of the mounting sleeve plate 15 can be carried out. Then, the battery 16 supplies power to the controller 17, the controller 17 starts the adjustment motor 4, the adjustment motor 4 drives the screw rod 3 to rotate, the screw rod 3 drives the articulated groove block 5 to move backward under the action of the thread, the articulated groove block 5 drives the two push shafts 6 to move backward synchronously, one end of the sleeve rod 7 is driven by the push shaft 6 to move backward, and the other end of the sleeve rod 7 drives the linkage shaft 8 to move rightward. The linkage shaft 8 drives the concave block 9 to move rightward. At the same time, the sleeve rod 7 rotates on the linkage shaft 8, and the other concave block 9 moves leftward. At the same time, the guide sleeve block 10 drives the limit sleeve block 29 to move rightward, the limit sleeve block 29 drives the concave slide bar 28 to move rightward, the concave slide bar 28 causes the L-shaped rack 27 to move rightward, the L-shaped rack 27 drives the sliding sleeve block 26 to move rightward along the outer wall of the linkage slide bar 25, and the sliding sleeve block 26 moves rightward along the inner wall of the push frame 24.

[0039] The linkage shaft 8 drives the guide sleeve block 10 to move rightward along the inner wall of the drill guide frame 1. At the same time, the guide sleeve block 10 moves rightward along the outer wall of the guide post 12. The guide sleeve block 10 drives the displacement rotating shaft 11 to move rightward, the displacement rotating shaft 11 drives the displacement disk 33 to move rightward, the displacement disk 33 drives the moving frame 34 to move rightward, and the moving frame 34 causes the transmission screw rod 35 to move rightward. The transmission screw rod 35 drives the threaded sleeve block 36 to move rightward, the threaded sleeve block 36 drives the rotary drill 40 to move rightward. At the same time, the rotary drill 40 drives the core sampling drill barrel rod 41 to move rightward, and the other core sampling drill barrel rod 41 moves leftward. The distance sensor 20 senses the distance of the induction block 19. When the distance value sensed by the distance sensor 20 is the same as the distance value set by the controller 17, the controller 17 turns off the adjustment motor 4, so that the two core sampling drill barrel rods 41 can be synchronously and efficiently adjusted according to the specified precise interval.

[0040] Second, when the present invention performs synchronous angle adjustment drilling, the controller 17 starts the linkage cylinder 22. The drill guide frame 1 supports the socket block 21, and the socket block 21 supports the linkage cylinder 22 to increase the stability of the linkage cylinder 22. At the same time, the linkage cylinder 22 pushes the push frame 24 forward, the push frame 24 drives the linkage slide bar 25 forward, the linkage slide bar 25 drives the two sliding sleeve blocks 26 forward, the sliding sleeve block 26 drives the L-shaped rack 27 forward, the L-shaped rack 27 drives the concave slide bar 28 forward, the concave slide bar 28 moves forward along the inner wall of the limit sleeve block 29. The guide sleeve block 10 can support the limit sleeve block 29, the L-shaped rack 27 drives the linkage gear 30 to rotate clockwise, and the other linkage gear 30 also rotates clockwise synchronously.

[0041] The linkage gear 30 drives the displacement rotating shaft 11 to rotate clockwise. The displacement rotating shaft 11 rotates clockwise inside the guiding sleeve block 10. The displacement rotating shaft 11 drives the displacement disc 33 to rotate clockwise. The displacement disc 33 causes the moving frame 34 to rotate clockwise. The moving frame 34 drives the transmission screw rod 35 to rotate clockwise. The transmission screw rod 35 drives the threaded sleeve block 36 to rotate clockwise. The threaded sleeve block 36 causes the rotary drill 40 to rotate clockwise. The rotary drill 40 drives the core drill rod 41 to rotate clockwise. The guiding sleeve block 10 plays a supporting role for the support frame 32. The support frame 32 supports the angle sensor 31. The angle sensor 31 performs angle sensing on the displacement rotating shaft 11. When the angle value set by the angle sensor 31 is the same as the adjusted angle value set by the controller 17, the linkage electric cylinder 22 is closed by the controller 17. In this way, the two core drill rods 41 can be adjusted synchronously according to the specified angle.

[0042] Then, when the present invention performs synchronous offset distance adjustment drilling, the controller 17 starts the two drive motors 37. The displacement rotating shaft 11 supports the displacement disc 33. The displacement disc 33 supports the moving frame 34. The moving frame 34 supports the drive motor 37. In this way, the drive motor 37 drives the transmission screw rod 35 to rotate. While the transmission screw rod 35 rotates inside the moving frame 34, the threaded sleeve block 36 moves rightward under the action of the thread driving force. The threaded sleeve block 36 moves rightward along the inner wall of the moving frame 34. The threaded sleeve block 36 drives the rotary drill 40 to move rightward. The rotary drill 40 drives the core drill rod 41 to move rightward. At the same time, the threaded sleeve block 36 drives the induction support block 38 to move rightward. The induction support block 38 approaches the displacement distance sensor 39. The displacement distance sensor 39 performs distance sensing on the induction support block 38. When the distance value sensed by the displacement distance sensor 39 is the same as the distance value set by the controller 17, the drive motor 37 is closed by the controller 17. In this way, the two core drill rods 41 can perform precise adjustment operations of synchronous offset distance at the specified angle position.

[0043] Finally, when the present invention performs synchronous core drilling and coring, after the positions of the two core drilling barrel rods 41 are adjusted, the two rotary drills 40 are started through the controller 17. The two rotary drills 40 drive the two core drilling barrel rods 41 to rotate at high speed respectively. At the same time, the extrusion cylinder 14 drives the pressure plate 13 to move downward. The pressure plate 13 causes the drill guide frame 1 to move downward. The drill guide frame 1 drives the two guide rods 18 to move downward along the guide. In this way, the two guide rods 18 stably slide downward along the inner wall of the mounting sleeve plate 15, and the drill guide frame 1 drives the guide post 12 to move downward. The guide post 12 drives the two guide sleeve blocks 10 to move downward. The guide sleeve blocks 10 drive the displacement rotating shaft 11 to cause the displacement disc 33 to move downward. The displacement disc 33 drives the moving frame 34 to move downward. The moving frame 34 causes the transmission screw rod 35 to move downward. The transmission screw rod 35 drives the threaded sleeve block 36 to move downward. At the same time, the threaded sleeve block 36 can drive the rotary drill 40 to move downward, and the rotary drill 40 causes the core drilling barrel rod 41 to move downward. In this way, the two core drilling barrel rods 41 can perform core drilling operations at different positions on the exploration and coring positions of the rock and soil area.

[0044] The content not described in detail in the specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited. Conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here again.

[0045] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A core sampling device for geotechnical engineering investigation, comprising a drilling rig guiding frame, a support frame and a screw rod. The support frame is fixed on one side of the drilling rig guiding frame, and the screw rod is rotatably connected to the inner wall of the support frame, characterized in that: The outer wall of the screw rod is provided with a synchronous interval adjustment drilling mechanism; The synchronous interval adjustment drilling mechanism includes a hinged groove block threadedly arranged on the outer wall of the screw rod. One end of the support frame is fixedly connected with an adjustment motor for driving the rotation of the screw rod, and the hinged groove block is slidably connected with the support frame. Fixedly connected to both inner walls of the hinged groove block are push shafts. Rotatably connected to the outer wall of each push shaft is a sleeve rod. Rotatably connected to the inner wall of the sleeve rod and away from the push shaft is a linkage shaft. Fixedly installed at the top of the linkage shaft is a concave block. Fixedly connected to one side of the concave block is a guiding sleeve block which is slidably connected with the drilling machine guiding frame. Rotatably connected to the inner wall of the guiding sleeve block is a displacement rotating shaft. At the bottom end of the displacement rotating shaft is provided a synchronous offset distance adjustment drilling mechanism, which includes a displacement disc fixedly arranged at the bottom end of the displacement rotating shaft. Fixedly connected to the lower surface of the displacement disc is a moving frame, and rotatably connected inside the moving frame is a transmission screw rod. Fixedly installed at one end of the transmission screw rod is a transmission motor for driving the rotation of the transmission screw rod, and the transmission motor is fixedly connected with the moving frame. Threadedly connected to the outer wall of the transmission screw rod is a threaded sleeve block, and fixedly connected to one side of the threaded sleeve block is an induction support block. On one side of the induction support block is provided a moving distance sensor which is fixedly connected with the moving frame. Fixedly installed on the lower surface of the threaded sleeve block is a rotary drilling machine, and fixedly connected to the output end of the rotary drilling machine is a core drilling barrel rod.

2. The core sampling device for geotechnical engineering investigation according to claim 1, characterized in that: The output end of the adjustment motor is fixedly connected with the screw rod, and the two push shafts are symmetrically arranged with respect to the hinged groove block; The cross-sectional shapes of the push shaft and the linkage shaft are both circular.

3. The core sampling device for geotechnical engineering investigation according to claim 1, characterized in that: The concave block is slidably connected with the drilling machine guiding frame, and the vertical cross-sectional shape of the concave block is concave. Fixedly installed on one side of the inner wall of the drilling machine guiding frame is a guiding column, and both guiding sleeve blocks are slidably connected with the guiding column; Fixedly connected to one side of the guiding sleeve block is an induction block. On one side of the induction block is provided a spacing distance sensor, and the spacing distance sensor is fixedly connected with the other guiding sleeve block.

4. The core sampling device for geotechnical engineering investigation according to claim 1, characterized in that: Fixedly connected to the top end of the drilling machine guiding frame is a pressing plate, and the support frame is fixedly connected with the pressing plate. Fixedly installed on the upper surface of the pressing plate is a pressing cylinder, and the outer wall of the output end of the pressing cylinder is slidably connected with an installation sleeve plate; Fixedly connected to the upper surface of the installation sleeve plate and near one corner line position is a storage battery. Fixedly installed on the upper surface of the storage battery is a controller. On both sides of the pressing cylinder are provided guiding rods, and both guiding rods are slidably connected with the installation sleeve plate; Both guiding rods are fixedly connected with the drilling machine guiding frame.

5. The core sampling device for geotechnical engineering investigation according to claim 1, wherein: On the other side of the drilling machine guiding frame is provided a synchronous angle adjustment drilling mechanism, which includes a socket block fixedly arranged on the other side of the drilling machine guiding frame; Fixedly installed on one side of the socket block is a linkage cylinder, and the outer wall of the output end of the linkage cylinder is slidably connected with the socket block. Fixedly installed at the output end of the linkage cylinder is a push block. Fixedly connected to one side of the push block is a push frame, and fixedly connected to one side of the inner wall of the push frame is a linkage sliding rod; The outer wall of the linkage slide rod is slidably connected to two sliding sleeves, one side of each sliding sleeve is fixedly connected to an L-shaped rack, one side of the L-shaped rack is fixedly connected to a concave slide bar, the outer wall of the concave slide bar is slidably connected to a limit sleeve block, the limit sleeve block is slidably connected to the L-shaped rack, and the limit sleeve block is fixedly connected to the guide sleeve block; The other side of the L-shaped rack is meshingly connected with a linkage gear, and the linkage gear is fixedly connected to the shifting shaft. An angle sensor is fixedly installed on the top of the shifting shaft, and a support frame is installed on one side of the angle sensor. The guide sleeve and the angle sensor are fixedly connected to the support frame.

6. The core sampling device for geotechnical engineering investigation according to claim 5, wherein: The two sliding sleeves are both slidably connected to the push frame, and the outer wall of the sliding sleeve and the inner wall of the push frame are both smooth surfaces.

7. The core sampling device for geotechnical engineering investigation according to claim 5, characterized in that: The limiting sleeve block is rotationally connected to the linkage gear, and the upper surface of the linkage gear is a smooth surface.

8. The core sampling device for geotechnical engineering investigation according to claim 5, wherein: The output end of the angle sensor is coaxially arranged with the displacement shaft, and the cross-section of the L-shaped rack is L-shaped.

9. The core sampling device for geotechnical engineering exploration according to claim 1, wherein: The sensing support block is slidably connected to the moving frame, and the upper surface of the sensing support block and the upper surface of the moving distance sensor are in the same horizontal plane.

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