A geotechnical engineering investigation rock sample collecting device

Abstract

The rock sample collecting device for geotechnical engineering investigation disclosed by the present application is characterized in that the device is provided with two bases, the top ends of the bases are fixedly installed at the bottom ends of the two sides of a support plate, the top ends of the two sides of the support plate are fixedly installed with vertical rods, the bottom end of a cross frame is movably installed with a threaded rod, the bottom end of the threaded rod is movably installed at the middle of the top end of the support plate, the outer diameter of the threaded rod is threadedly connected at the middle of the rear end of a box body, the inner bottom of the box body is movably installed with an outer cylinder, the inner middle of the box body is movably installed with a middle cylinder, the bottom end of the middle cylinder penetrates through the inside of the outer cylinder and extends below the outer cylinder, and the inside of the middle cylinder is installed with an inner cylinder through a locating bearing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of geotechnical engineering equipment, in particular to a rock sample collecting device for geotechnical engineering investigation. BACKGROUND

[0002] In the field of geotechnical engineering, rock sample collection is a key link for carrying out geological analysis and engineering design. With the continuous advancement of infrastructure construction, such as the increase of large-scale projects like bridges, tunnels, high-rise buildings, etc., higher requirements are put forward for the accuracy and efficiency of geotechnical engineering investigation. As the core equipment for obtaining original data, the performance of the rock sample collecting device directly affects the quality of the sample and the reliability of the engineering safety evaluation.

[0003] Currently, the traditional rock sample collecting device has the following technical bottlenecks. Firstly, the core integrity is difficult to guarantee during the core collection process. Most devices use rigid clamping method to extract the core, which is prone to core fracture and disintegration due to excessive rotary shear force or clamping force during drilling and removal, especially when dealing with rocks with large hardness difference or developed bedding, the sample is severely damaged, which cannot truly reflect the mechanical properties of the rock, affecting the accurate determination of subsequent geological parameters. Secondly, the cooling and chip removal system is inefficient. The existing devices mostly rely on external high-pressure water flushing for cooling and chip removal, which is difficult to accurately control the water flow, often leading to excessive amount of mud, not only polluting the core sample, but also possibly blocking the drilling hole, affecting the drilling progress; some devices lack effective chip removal mechanism, and the accumulation of debris can cause the drill bit to wear out, reducing the service life of the equipment and increasing the construction cost. Thirdly, the safety and adaptability of the device are insufficient. When facing high-hardness rocks, the power system of the traditional device is prone to damage due to overload, and lacks reliable protection measures; at the same time, the device structure design is single, which is difficult to adapt to complex and variable geological environment, and is not convenient to operate in narrow space or areas with large terrain fluctuations, limiting its application range.

[0004] In addition, the existing collecting device has low functional integration, and the cooling, chip removal, and core collection links are relatively independent, which cannot realize collaborative work, leading to complicated operation process, frequent manual intervention, and reduced investigation efficiency. Therefore, it is a technical problem to be solved in the field of geotechnical engineering investigation to develop a rock sample collecting device that can effectively guarantee the core integrity, improve the cooling and chip removal efficiency, have overload protection function, and adapt to various working conditions. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a rock sample collecting device for geotechnical engineering investigation, which solves the problems of core fracture, poor cooling and chip removal, equipment overload damage, and insufficient adaptability of the traditional rock sample collecting device, and realizes core complete collection, efficient cooling and chip removal, and equipment protection through innovative structure design, thereby improving the efficiency and reliability of geotechnical engineering investigation.

[0006] To achieve the above object, the present application is realized by the following technical scheme: A rock sample collecting device for geotechnical engineering investigation, comprising two bases, the top ends of the bases are respectively fixedly installed on both sides of the bottom end of a support plate, a vertical rod is fixedly installed on both sides of the top end of the support plate, the top ends of the vertical rods are respectively fixedly installed on both sides of the bottom end of a crossbar, a threaded rod is movably installed at the middle of the bottom end of the crossbar and the bottom end of the threaded rod is movably installed at the middle of the top end of the support plate, the outer diameter of the threaded rod is threadedly connected to the middle of the rear end of a box body, an outer cylinder is movably installed at the inner bottom of the box body, a middle cylinder is movably installed at the inner middle of the box body and the bottom end of the middle cylinder penetrates through the inside of the outer cylinder and extends below it, an inner cylinder is installed in the inside of the middle cylinder through a locating bearing, a core drill bit is fixedly installed at the bottom end of the outer cylinder, a plurality of magnetic rings are uniformly fixedly installed on the outer diameter of the middle cylinder, an aluminum ring is movably installed at a position corresponding to each magnetic ring on the outer diameter of the outer cylinder, and a spiral guide plate is fixedly installed on the outer diameter of the aluminum ring.

[0007] Preferably, a connecting arm is fixedly installed at both ends of the box body and the ends of the connecting arms are movably installed on the outer diameter of the corresponding vertical rod, and an inclined support rod is fixedly installed at both sides of the rear end of the crossbar and the bottom end of the inclined support rod is fixedly installed at the top end of the corresponding base.

[0008] Preferably, the rear end of the base is fixedly installed on both sides of a handrail, universal wheels are fixedly installed at both sides of the bottom end of the base, and the top end of the threaded rod extends above the crossbar and is fixedly installed with a hand wheel.

[0009] Preferably, an inner recess is formed at the inner bottom of the inner cylinder, a core claw is movably arranged in the inner recess, and a polyurethane buffer ring is fixedly installed at the inner side end of the core claw.

[0010] Preferably, a three-phase asynchronous motor is fixedly installed at one side of the top end of the box body, a driving end of the three-phase asynchronous motor extends into the inside of the box body and is fixedly installed with a transmission shaft, a driving bevel gear is fixedly installed on the upper side outer diameter of the transmission shaft, a driven bevel gear is arranged on the upper side outer diameter of the middle cylinder, a compression spring is fixedly installed at a position above the driven bevel gear on the outer diameter of the middle cylinder and the bottom end of the compression spring abuts against the top end of the driven bevel gear.

[0011] Preferably, a clamping plate is fixedly installed at a position below the driven bevel gear on the outer diameter of the middle cylinder, a plurality of round head grooves are formed at the top end of the clamping plate, a plurality of round head clamping pins are uniformly fixedly installed at the bottom end of the driven bevel gear and the ends of the round head clamping pins extend into the inside of the corresponding round head groove.

[0012] Preferably, the lower side of the transmission shaft is fixedly provided with a cylinder body, the cylinder body is provided with a ball groove inclinedly arranged on the outer diameter of the cylinder body, and the ball groove is movably provided with an inclined bearing seat, one end of the inclined bearing seat is fixedly provided with a swing rod, and the tail end of the swing rod is movably arranged on one side of the outer cylinder.

[0013] Preferably, the inner top of the inner cylinder is provided with a cavity, the top end of the cavity is fixedly provided with a cooling water inlet pipe, the tail end of the cooling water inlet pipe extends to the outside of the box body, the inner wall sides of the cavity are both provided with water seepage holes, a water tank is arranged between the middle cylinder and the inner cylinder, and the inside of the coring drill bit is provided with flow-out channels on both sides.

[0014] The rock sample collecting device for geotechnical engineering investigation has the following beneficial effects:

[0015] 1、The three-layer sleeve design of the outer cylinder, the middle cylinder and the inner cylinder is adopted, the inner cylinder is connected with the middle cylinder through the positioning bearing, the inner cylinder remains stationary when the middle cylinder rotates, the rotation shear force of the rock core is avoided, the integrity of the rock core is effectively protected, the inner side of the rock core claw in the inner groove is provided with a polyurethane buffer ring, when the rock core claw is automatically tightened after sampling is completed, the rock core is clamped by the elastic extrusion of the buffer ring instead of rigid clamping, the end rock core is prevented from disintegrating, and the core integrity rate is improved.

[0016] 2、Cooling water is introduced into the cavity through the cooling water inlet pipe, flows into the water tank through the water seepage holes, and is then transported to the lower side of the drill bit through the flow-out channels in the inside of the coring drill bit, so that the drill bit is cooled in real time, the high-temperature wear in the drilling process is reduced, the service life of the drill bit is prolonged, the water flow can be accurately controlled through the cooling system, the generation of mud is reduced, the sampling rock core is prevented from being polluted by the mud, and the cleanliness and detection accuracy of the rock core sample are ensured.

[0017] 3、The middle cylinder drives the magnetic ring to rotate when the middle cylinder rotates, according to the principle of electromagnetic induction, the aluminum ring is driven to rotate under the action of the ampere force, the spiral guide plate on the outer diameter of the aluminum ring upwardly transports the drill core waste, and the transmission shaft drives the cylinder body to rotate, the outer cylinder is driven to swing up and down through the swing rod and the inclined bearing seat due to the inclined arrangement of the ball groove, and the waste is further pushed upward. The double waste removal mechanisms ensure that the waste is smoothly discharged in real time during the sampling process, and prevent the accumulation of the waste from affecting the drilling efficiency.

[0018] 4. In the present invention, when the hardness of the drilled core is high and the middle cylinder stops rotating, the driven bevel gear will compress the compression spring, causing the round head pin and the round head groove to frequently disengage and engage, cutting off power transmission, avoiding damage to the three-phase asynchronous motor and the coring drill bit due to overload, and improving equipment reliability. Through the layered design of the outer cylinder, middle cylinder, inner cylinder and coring drill bit, combined with the coordinated work of components such as the magnetic ring, aluminum ring, spiral guide plate, transmission shaft, and cylinder body, the integrated integration of drilling, cooling, chip removal, core protection and other functions is realized, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 Schematic diagram of the internal structure of the box in the present invention;

[0021] Figure 3 Schematic diagram of the internal structure of the coring drill bit of the present invention;

[0022] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0024] Figure 6 Schematic diagram of the internal structure of the chamber in the present invention.

[0025] Among them, 1. base; 2. support plate; 3. vertical pole; 4. cross frame; 5. threaded rod; 6. box body; 7. connecting arm; 8. diagonal support rod; 9. handrail; 10. universal wheel; 11. handwheel; 12. outer cylinder; 13. middle cylinder; 14. inner cylinder; 15. coring drill bit; 16. inner groove; 17. core claw; 18. polyurethane buffer ring; 19. magnetic ring; 20. aluminum ring; 21. spiral guide plate; 22. three-phase asynchronous motor; 23. transmission shaft; 24. driving bevel gear; 25. compression spring; 26. driven bevel gear; 27. clamping plate; 28. round head groove; 29. ​​round head bayonet; 30. cylinder body; 31. oblique bearing seat; 32. rocker arm; 33. chamber; 34. cooling water inlet pipe; 35. seepage hole; 36. water tank; 37. outflow channel. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example:

[0028] Please see the attached Figure 1 -Attached Figure 6 The present invention provides a rock sample collection device for geotechnical engineering investigation, such as Figure 1 As shown, the device comprises two bases 1, the tops of which are fixedly mounted on either side of the bottom of a support plate 2. The bases 1 are rectangular plates and are bolted to the bottom surfaces of the support plates 2, forming the bottom support structure of the device. Vertical poles 3 are fixedly mounted on either side of the top of the support plates 2. The support plates 2 are horizontally arranged steel plates, and the vertical poles 3 are vertically welded to either side of the top to form vertical support columns. The tops of the vertical poles 3 are fixedly mounted on either side of the bottom of a cross frame 4. The tops of the vertical poles 3 are connected to the cross frame 4 via flanges. The cross frame 4 spans the tops of the two vertical poles 3, forming a portal-shaped frame. A threaded rod 5 is movably installed in the middle of the bottom end of the cross frame 4, and the bottom end of the threaded rod 5 is movably installed in the middle of the top end of the support plate 2. The threaded rod 5 passes through the bearing seat in the middle of the cross frame 4, and the bottom end is connected to the support plate 2 through a rotating seat, and can rotate around its own axis. The outer diameter of the threaded rod 5 is threadedly connected to the middle of the rear end of the box body 6. A threaded hole is provided at the rear end of the box body 6 to cooperate with the threaded rod 5. When the threaded rod 5 rotates, it can drive the box body 6 to rise and fall. An outer cylinder 12 is movably installed on the inner bottom of the box body 6. The outer cylinder 12 is installed on the inner bottom of the box body 6 through a bearing and can rotate around the vertical axis. The middle part of the box body 6 is movably installed with a middle cylinder 13 and the bottom end of the middle cylinder 13 passes through the interior of the outer cylinder 12 and extends below it. The middle cylinder 13 is located inside the outer cylinder 12, and the bottom end extends out of the bottom of the outer cylinder 12 to form a nested rotating structure. The inner cylinder 14 is installed inside the middle cylinder 13 through a positioning bearing. The inner cylinder 14 is connected to the inner wall of the middle cylinder 13 through a positioning bearing and can remain stationary. The bottom end of the outer cylinder 12 is fixedly installed with a core drill bit 15. The core drill bit 15 is a cylindrical drilling component that is fixed to the bottom of the outer cylinder 12 by bolts. The end is used for drilling cores. Several magnetic rings 19 are evenly fixedly installed on the outer diameter of the middle cylinder 13. The magnetic rings 19 are equidistantly distributed on the outer periphery of the middle cylinder 13 and rotate synchronously with the middle cylinder 13. Aluminum rings 20 are movably installed at the position corresponding to each magnetic ring 19 on the outer diameter of the outer cylinder 12. The aluminum rings 20 are sleeved on the outside of the outer cylinder 12, corresponding to the position of the magnetic rings 19, and can rotate freely. A spiral guide plate 21 is fixedly installed on the outer diameter of the aluminum ring 20. The spiral guide plate 21 is spirally fixed to the outer periphery of the aluminum ring 20 for transporting drilling waste.

[0029] In this embodiment, the two ends of the box body 6 are fixedly installed with the connecting arms 7, and the ends of the connecting arms 7 are movably installed on the outer diameters of the corresponding side vertical rods 3. The connecting arms 7 are L-shaped structures, one end of which is welded to the two sides of the box body 6, and the other end is slidably connected with the vertical rod 3 through a shaft sleeve, limiting the radial displacement of the box body 6 when lifting. The rear ends of the transverse frames 4 are fixedly installed with the inclined struts 8, and the bottom ends of the inclined struts 8 are fixedly installed on the top rear sides of the corresponding side bases 1. The inclined struts 8 are obliquely arranged, and the two ends are welded with the transverse frame 4 and the base 1 respectively, thereby enhancing the stability of the frame structure.

[0030] The rear ends of the bases 1 are fixedly installed on the two sides of the handrails 9. The handrails 9 are U-shaped steel pipes, and the two ends are welded to the rear ends of the bases 1, which facilitates the staff to push the device to move. The bottom ends of the bases 1 are fixedly installed with universal wheels 10 on the two sides. The universal wheels 10 are fixed to the bottom ends of the bases 1 by bolts and can rotate 360° to realize flexible movement of the device. The top end of the threaded rod 5 extends above the transverse frame 4 and is fixedly installed with a hand wheel 11. The hand wheel 11 is fixed to the top end of the threaded rod 5. The staff rotates the hand wheel 11 to drive the threaded rod 5 to rotate.

[0031] An inner groove 16 is formed in the inner bottom of the inner cylinder 14. The inner groove 16 is located at the center of the bottom of the inner cylinder 14 and is used to accommodate the core claw 17. The inner groove 16 movably accommodates the core claw 17. The core claw 17 is composed of a plurality of arc-shaped steel sheets and is hinged to the inner wall of the inner groove 16. The core claw 17 can be inwardly folded to clamp the core. A polyurethane buffer ring 18 is fixedly installed on the inner side end of the core claw 17. The polyurethane buffer ring 18 is pasted to the inner side of the core claw 17 and avoids rigid damage to the core through elastic extrusion.

[0032] A three-phase asynchronous motor 22 is fixedly installed on one side of the top end of the box body 6. The three-phase asynchronous motor 22 is fixed to the top end of the box body 6 by a support and provides power for the device. The driving end of the three-phase asynchronous motor 22 extends into the interior of the box body 6 and is fixedly installed with a transmission shaft 23. The transmission shaft 23 is connected with the motor output shaft, penetrates through the top of the box body 6, and transmits rotary power. A driving bevel gear 24 is fixedly installed on the upper outer diameter of the transmission shaft 23. The driving bevel gear 24 is fixed to the upper part of the transmission shaft 23 and is in meshing transmission with a driven bevel gear 26. The driven bevel gear 26 is arranged on the upper outer diameter of the middle cylinder 13 and is sleeved on the upper part of the middle cylinder 13. The driven bevel gear 26 is in meshing transmission with the driving bevel gear 24 and drives the middle cylinder 13 to rotate. A compression spring 25 is fixedly installed on the outer diameter of the middle cylinder 13 above the position of the driven bevel gear 26. The bottom end of the compression spring 25 abuts against the top end of the driven bevel gear 26. One end of the compression spring 25 is fixed to the middle cylinder 13, and the other end abuts against the driven bevel gear 26, thereby ensuring that the bevel gears are closely meshed.

[0033] The outer diameter of the middle cylinder 13 is fixedly provided with a clamping plate 27 near the lower position of the driven bevel gear 26. The clamping plate 27 is an annular plate fixed to the outer periphery of the middle cylinder 13 and located below the driven bevel gear 26. A plurality of round head grooves 28 are formed on the top end of the clamping plate 27 and uniformly distributed on the top end of the clamping plate 27 for cooperating with the round head clamping pin 29. The bottom end of the driven bevel gear 26 is fixedly provided with a plurality of round head clamping pins 29, and the ends of the round head clamping pins 29 extend into the corresponding side round head grooves 28. The round head clamping pins 29 are fixed to the bottom end of the driven bevel gear 26 and inserted into the round head grooves 28 to form a clamping structure for transmitting torque.

[0034] When the hardness of the drilled core is high, the middle cylinder 13 will stop rotating. At this time, the three-phase asynchronous motor 22 drives the transmission shaft 23 and the driving bevel gear 24 to rotate. At this time, the rotating driven bevel gear 26 will compress the compression spring 25, so that the round head groove 28 and the round head clamping pin 29 will be constantly buckled and clamped. At this time, the driven bevel gear 26 no longer applies a rotating force to the middle cylinder 13, which can protect the three-phase asynchronous motor 22 and the coring drill bit 15.

[0035] A cylinder body 30 is fixedly provided on the lower outer diameter of the transmission shaft 23. The cylinder body 30 is fixed to the lower part of the transmission shaft 23 and rotates synchronously with the transmission shaft 23. An inclined ball groove is formed on the outer diameter of the cylinder body 30, and an inclined bearing seat 31 is movably installed in the ball groove. The ball groove is inclinedly formed on the outer periphery of the cylinder body 30. The inclined bearing seat 31 is in contact with the ball groove through balls and can slide along the groove. One end of the inclined bearing seat 31 is fixedly provided with a swing rod 32, and the end of the swing rod 32 is movably installed on one side of the outer cylinder 12. The two ends of the swing rod 32 are hingedly connected with the inclined bearing seat 31 and the outer cylinder 12, respectively, so as to convert the sliding of the inclined bearing seat 31 into the up-down swinging of the outer cylinder 12.

[0036] Specifically, the rotating middle cylinder 13 drives all the magnetic rings 19 on the outer diameter to rotate. When the magnetic ring 19 rotates, it causes the magnetic flux of the aluminum ring 20 to change. According to the principle of electromagnetic induction, the aluminum ring 20 will be affected by the Ampere force and follow the magnetic field movement direction to rotate with the magnetic ring 19. When the aluminum ring 20 rotates, it drives the spiral guide plate 21 on the outer diameter to rotate, thereby conveying the waste generated during the drilling process upward. When the transmission shaft 23 rotates, it also drives the cylinder body 30 to rotate. Since the ball groove on the outer diameter of the cylinder body 30 has a certain angle with the central axis of the cylinder body 30, when the cylinder body 30 rotates, it drives the inclined bearing seat 31 outside the ball groove to swing along the axis. Through the action of the swing rod 32, the outer cylinder 12 swings up and down, conveying the waste upward again, thereby realizing the real-time and smooth chip removal work during the sampling process.

[0037] Further, the inner top of the inner cylinder 14 is provided with a chamber 33, which is located at the top of the inner cylinder 14 and used for storing cooling water. The top end of the chamber 33 is fixedly provided with a cooling water inlet pipe 34, the end of which extends to the outside of the box body 6. The cooling water inlet pipe 34 is connected to an external water source to introduce cooling water into the chamber 33. The inner wall sides of the chamber 33 are both provided with water seepage holes 35, which are located on the side walls of the chamber 33 to make the cooling water flow into a water tank 36. The water tank 36 is an annular space located between the middle cylinder 13 and the inner cylinder 14 and used for storing cooling water. The inside of the core drill bit 15 is provided with flow-out channels 37 on both sides. The top end of the flow-out channel 37 is connected to the inside of the water tank 36, and the bottom end of the flow-out channel 37 is connected to the outside. The flow-out channel 37 penetrates the core drill bit 15 to guide the cooling water in the water tank 36 to the bottom of the drill bit to achieve the cooling function.

[0038] Working principle: first through the handrail 9 and universal wheel 10 to move the device to the sampling area, and then start the three-phase asynchronous motor 22, through the three-phase asynchronous motor 22 drive transmission shaft 23 rotation, drive bevel gear 24 rotation, rotating bevel gear 24 drive driven bevel gear 26 and middle cylinder 13 rotation, thus drive the bottom of the core drill 15 rotation, then the staff rotate hand wheel 11, through hand wheel 11 drive screw rod 5 rotation, use the limiting effect of connecting arm 7 and vertical rod 3, drive box 6 down, thus drive the rotating core drill 15 down, start drilling core sampling work, the drilling core will be the core claw 17 into the inner groove 16 and into the inside of the inner cylinder 14, the inner cylinder 14 through the positioning bearing and middle cylinder 13 connection, so it will not follow the rotation of the middle cylinder 13 rotation, can avoid the generation of rotary shear force lead to core fracture, at this time through the cooling water inlet pipe 34 import cooling water, cooling water into the chamber 33, again through the water seepage hole 35 into the water tank 36, and ultimately through the outflow channel 37 flow to the core drill 15 below, realize the real-time cooling of the core drill 15, at the same time more easily control the water flow to reduce the generation of slurry, so as to avoid the slurry pollution sampling core, in the process of drilling core, rotating middle cylinder 13 will drive all the magnetic ring 19 rotation on the outer diameter, when the magnetic ring 19 rotation, will lead to the change of the magnetic flux of aluminum ring 20, according to the principle of electromagnetic induction, at this time the aluminum ring 20 will be affected by the ampere force, follow the magnetic field movement direction for magnetic ring 19 follow rotation, aluminum ring 20 rotation will drive the spiral guide plate 21 rotation on the outer diameter, thus the waste generated in the process of drilling core upward, while the transmission shaft 23 rotation will also drive the cylinder 30 rotation, because the cylinder 30 outer diameter on the ball groove and the central axis of the cylinder 30 exist certain angle, when the cylinder 30 rotation, will drive the inclined bearing seat 31 outside the ball groove axis swing, again through the action of swing rod 32, drive the outer cylinder 12 up and down swing, the waste is transported upward again, thus realize the real-time smooth chip removal work in the sampling process, complete the core sampling work, the staff reverse rotation hand wheel 11, drive box 6 and middle cylinder 13 up, at this time the core claw 17 from the inner groove 16 slide out and automatically tighten, drive the polyurethane buffer ring 18 in the core, through the elastic extrusion of polyurethane buffer ring 18 rather than rigid clamping core, avoid the end of the core disintegration, improve the core integrity, when the drilling core hardness is higher, the middle cylinder 13 will stop rotation, at this time the three-phase asynchronous motor 22 drive transmission shaft 23 and drive bevel gear 24 are still rotating, at this time the rotating driven bevel gear 26 will compress the compression spring 25, so that the round head groove 28 and round head snap pin 29 will be constantly decoupled, at this time the driven bevel gear 26 no longer apply rotation force to the middle cylinder 13, can play a protective role of three-phase asynchronous motor 22 and core drill 15.

[0039] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A geotechnical investigation rock sample collecting device comprising two bases (1), characterized in that, The top end of the base (1) is fixedly installed on both sides of the bottom end of the support plate (2), the top end of the support plate (2) is fixedly installed with a vertical rod (3) on both sides, the top end of the vertical rod (3) is fixedly installed on both sides of the bottom end of the crossbar (4), the middle of the bottom end of the crossbar (4) is movably installed with a threaded rod (5), and the bottom end of the threaded rod (5) is movably installed on the middle of the top end of the support plate (2), the outer diameter of the threaded rod (5) is screw-connected on the middle of the rear end of the box body (6), the inner bottom of the box body (6) is movably installed with an outer cylinder (12), the inner middle of the box body (6) is movably installed with a middle cylinder (13), and the bottom end of the middle cylinder (13) penetrates the inside of the outer cylinder (12) and extends below it, the inside of the middle cylinder (13) is installed with an inner cylinder (14) through a locating bearing, the bottom end of the outer cylinder (12) is fixedly installed with a coring drill bit (15), the outer diameter of the middle cylinder (13) is uniformly fixedly installed with a plurality of magnetic rings (19), the outer diameter of the outer cylinder (12) is movably installed with an aluminum ring (20) at a position corresponding to each magnetic ring (19), and the outer diameter of the aluminum ring (20) is fixedly installed with a spiral guide plate (21).

2. The rock sample collecting device for geotechnical engineering investigation according to claim 1, characterized in that, Both ends of the box body (6) are fixedly installed with a connecting arm (7), and the distal end of the connecting arm (7) is movably installed on the outer diameter of the corresponding side vertical rod (3), and the rear end of the crossbar (4) is fixedly installed with an inclined support rod (8) on both sides, and the bottom end of the inclined support rod (8) is fixedly installed on the top end of the corresponding side base (1).

3. The geotechnical investigation rock sample collecting device according to claim 1, wherein, The rear end of the base (1) is fixedly installed on both sides of the handrail (9), the bottom end of the base (1) is fixedly installed with a universal wheel (10) on both sides, and the top end of the threaded rod (5) extends above the crossbar (4) and is fixedly installed with a hand wheel (11).

4. The geotechnical investigation rock sample collecting device according to claim 1, wherein, The inner bottom of the inner cylinder (14) is provided with an inner recess (16), the inside of the inner recess (16) is movably provided with a rock core claw (17), and the inner side end of the rock core claw (17) is fixedly installed with a polyurethane buffer ring (18).

5. The geotechnical investigation rock sample collecting device according to claim 1, wherein, The top end of the box body (6) is fixedly installed with a three-phase asynchronous motor (22), the driving end of the three-phase asynchronous motor (22) extends into the inside of the box body (6) and is fixedly installed with a transmission shaft (23), the upper side outer diameter of the transmission shaft (23) is fixedly installed with a driving bevel gear (24), the upper side outer diameter of the middle cylinder (13) is provided with a driven bevel gear (26), the outer diameter of the middle cylinder (13) is fixedly installed with a compression spring (25) above the position close to the driven bevel gear (26), and the bottom end of the compression spring (25) abuts against the top end of the driven bevel gear (26).

6. The geotechnical investigation rock sample collection device of claim 5, wherein, The outer diameter of the middle cylinder (13) is fixedly installed with a clamping plate (27) below the position close to the driven bevel gear (26), the top end of the clamping plate (27) is provided with a plurality of round head grooves (28), the bottom end of the driven bevel gear (26) is uniformly fixedly installed with a plurality of round head clamping pins (29), and the distal end of the round head clamping pin (29) extends into the inside of the corresponding side round head groove (28).

7. The geotechnical investigation rock sample collection device of claim 5, wherein, The lower side outer diameter of the transmission shaft (23) is fixedly provided with a cylinder (30), the outer diameter of the cylinder (30) is provided with a ball groove which is obliquely arranged and the ball groove is movably provided with an inclined bearing seat (31), one end of the inclined bearing seat (31) is fixedly provided with a swing rod (32) and the tail end of the swing rod (32) is movably arranged on one side of the outer cylinder (12).

8. The geotechnical investigation rock sample collection device of claim 1, wherein, The inner top of the inner cylinder (14) is provided with a chamber (33), the top end of the chamber (33) is fixedly provided with a cooling water inlet pipe (34) and the tail end of the cooling water inlet pipe (34) extends to the outside of the box body (6), the inner wall sides of the chamber (33) are both provided with water seepage holes (35), a water tank (36) is arranged between the middle cylinder (13) and the inner cylinder (14), the inside of the core drill bit (15) is provided with flow-out channels (37) on both sides, the top end of the flow-out channel (37) is communicated with the inside of the water tank (36) and the bottom end of the flow-out channel (37) is communicated with the outside.

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