A detection drilling device for underground rock and soil layers

Abstract

The present invention belongs to the field of rock drilling, and specifically discloses a detection drilling device for underground rock and soil layers, including a rotary drilling mechanism, an elastic lateral extrusion mechanism, a reciprocating extrusion drive mechanism and an extension rod assembly, wherein the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism are arranged on the rotary drilling mechanism, and the extension rod assembly is arranged on the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism. The present invention drives the reciprocating lifting spiral bracket to lift and lower reciprocate through the relative rotation of the external sleeve and the internal shaft rod, so that during the continuous transportation of rock and soil debris, it is pushed and squeezed in all directions, which can not only dispose of the debris on the spot, but also reinforce the side wall of the soil hole, which is convenient for subsequent sampling and other measurements.

Description

Technical Field

[0001] The invention belongs to the technical field of rock drilling, and in particular refers to a detection drilling device for underground rock and soil layers. Background Art

[0002] Underground drilling work is mostly for analyzing the soil quality or structural distribution underground, such as whether it is rock or soil layer distributed at different depths. Generally speaking, it is necessary to observe, test and classify the core after it is taken out. However, this method is not only cumbersome, but the drill bit is still descending during the process of transporting the core. Therefore, it is difficult to ensure the accuracy of the actual sampling depth of the core in this area.

[0003] In order to solve the above problem, this solution uses the method of sensing hardness during the drilling process to determine whether the current drilling position is a rock layer or a soil layer. This method is particularly suitable for working conditions where the soil is relatively loose and has a significant difference in hardness from the rock layer.

[0004] For small diameter drilling work, it is not necessary to discharge the debris generated by the drilling to the ground. During the drilling process, the soil and gravel can be squeezed into the surrounding soil, thus avoiding a series of problems caused by long-distance upward transportation. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a detection drilling device for underground rock and soil layers, which can squeeze debris in all directions and does not require long-distance upward transportation. Since there may be rock layers and soil layers underground, the debris can be pressed into the soil layer, but the rock layer is almost incompressible. Therefore, how to solve the problem of squeezing and discharging the debris in all directions in an unknown position is the main problem faced by this technical idea.

[0006] In order to solve this problem, the present invention creatively proposes an elastic lateral extrusion mechanism and a reciprocating extrusion drive mechanism, which drives the reciprocating lifting spiral bracket to lift and lower reciprocate through the relative rotation of the external sleeve and the internal shaft rod, so that the rock and soil debris are pushed and squeezed in all directions during the continuous transportation of the rock and soil debris, which can not only dispose of the debris on the spot, but also reinforce the side walls of the soil holes, and facilitate subsequent sampling and other measurements. In order to solve the problem that the side walls of the rock formation cannot be compressed, the present invention proposes an elastic telescopic top rod that can retract when the resistance is too large. The retraction of the elastic telescopic top rod prevents the debris in the rock formation from being forced to be squeezed in all directions, thereby ensuring the smooth lifting and lowering of the reciprocating lifting spiral bracket and the normal movement of the swinging pushing assembly in the soil layer.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a detection drilling device for underground rock and soil layers, including a rotary drilling mechanism, an elastic lateral extrusion mechanism, a reciprocating extrusion drive mechanism and an extension rod assembly, wherein the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism are arranged on the rotary drilling mechanism, and the extension rod assembly is arranged on the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism.

[0008] Through the reciprocating motion of the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism, the rock and soil debris can be squeezed in all directions while being transported upward, which not only avoids the problem of difficulty in discharging rock and soil debris when drilling deep holes, but also reinforces the side walls of the hole by extrusion, so as to facilitate subsequent measurement work after withdrawing the drill bit.

[0009] Furthermore, the rotary drilling mechanism includes a spiral drilling head and a hollow spiral auger, the hollow spiral auger and the spiral drilling head are relatively fixedly arranged, the side of the spiral drilling head is provided with a spiral conveying groove, the top of the spiral drilling head is provided with a rotating groove, the hollow spiral auger is composed of a center sleeve and spiral blades, and a longitudinal slide groove is provided in a circular array on the center sleeve.

[0010] By squeezing and rotating the auger head, on the one hand, the auger head can be pushed toward the depth, and on the other hand, the rock and soil debris generated by the rotation can be continuously transported upward through the spiral conveyor trough and the hollow spiral auger, and continuously transported upward during the process of squeezing toward the side. When the rock layer cannot be squeezed toward the side, the debris can continue to be transported upward to the soil layer.

[0011] Preferably, the rotary drilling mechanism further comprises a pressure sensor, which is arranged between the auger head and the hollow auger, and the relative squeezing force between the auger head and the hollow auger can be fed back through the pressure sensor.

[0012] The pressure sensor can provide feedback on the downward drilling pressure of the spiral drill head, and the pressure can provide feedback on the hardness of the target position, thereby determining whether the current drilling position is a soil layer or a rock layer.

[0013] Furthermore, the elastic lateral extrusion mechanism includes a bracket lifting and resetting assembly, a swinging pushing assembly, an elastic top support assembly and a flexible stop cover, the bracket lifting and resetting assembly is arranged on the rotary drilling mechanism, the swinging pushing assembly rotates on the rotary drilling mechanism, the elastic top support assembly is rotatably arranged between the bracket lifting and resetting assembly and the swinging pushing assembly, the swinging pushing assembly and the elastic top support assembly are arranged along a spiral line array, and the flexible stop cover covers the outside of the swinging pushing assembly.

[0014] The reciprocating motion of the elastic lateral extrusion mechanism can push and squeeze the debris in all directions, thereby completing the reinforcement of the hole wall and the processing of the debris.

[0015] Preferably, the bracket lifting and resetting assembly includes a reciprocating lifting spiral bracket and a reset spring. The reciprocating lifting spiral bracket is slidably lifted and lowered in the center sleeve. The reciprocating lifting spiral bracket is composed of a spiral portion and a vertical rod portion arranged crosswise with each other. A circular ring portion is provided at the bottom of the vertical rod portion, and the reset spring is arranged between the circular ring portion and the spiral drilling head.

[0016] As a further preferred embodiment of the present invention, the swing pushing assembly includes a folding frame, a telescopic slide plate and a swinging hinge seat, the folding frame consists of a fixed part, a bending part and a swinging part, the fixed part is fixedly connected to the bottom of the spiral blade, the swinging part and the fixed part are connected by a deformable bending part, the telescopic slide plate is snap-fitted and slidably arranged on the swinging part, and the swinging hinge seat is fixedly connected to the swinging part.

[0017] The reciprocating lifting of the reciprocating lifting spiral bracket can push the swinging part to swing back and forth, and the relative sliding of the telescopic slide plate and the swinging part can make the total length of the swinging part and the telescopic slide plate automatically adapt to the length of the lifting guide assembly, thereby achieving the technical purpose of pushing the debris to be squeezed toward the surroundings.

[0018] As a further preferred embodiment of the present invention, the elastic supporting assembly includes an elastic telescopic top rod and a supporting spring, one end of the elastic telescopic top rod is rotatably arranged on the spiral portion, and the other end of the elastic telescopic top rod is rotatably arranged on the swing hinge seat, a telescopic rod portion is arranged in the middle of the elastic telescopic top rod, and the total length of the elastic telescopic top rod can be changed by the extension and contraction of the telescopic rod portion, and the supporting spring is sleeved on the elastic telescopic top rod, and under the elastic force of the supporting spring, the elastic telescopic top rod has a tendency to maintain its own length

[0019] By using an elastic telescopic top rod that can be extended and retracted and maintains its own length through a supporting spring, when the current position is in the soil layer, the elastic telescopic top rod pushes the swinging part to squeeze debris into the soil layer. When the current position is in the rock layer, the rock layer cannot be compressed and the swinging part cannot swing fully. At this time, the supporting spring will be compressed. The problem of jamming in this case can be avoided by the self-retraction of the elastic telescopic top rod.

[0020] As a further preferred embodiment of the present invention, the flexible stop cover consists of a flexible part and an elastic part, the end of the flexible part is fixed to the bottom of the spiral blade, the flexible part is arranged on the outside of the swinging part, one end of the elastic part is fixed to the top of the spiral blade, and the telescopic slide is fixed to the other end of the spiral blade.

[0021] The flexible part is flexible and has a small ductility, so that the flexible part can provide thrust to rock and soil debris under the support of the swinging part, and can shrink and rebound slightly during the swinging of the swinging part, so that the flexible part always appears as a smooth curved surface; the elastic part is flexible and has a large elasticity. When the swinging part swings, it can avoid obvious wrinkles on the flexible stop cover through its own shrinkage and rebound. When the reciprocating lifting spiral bracket rises, the flexible part can be allowed to move with the swinging part through the extension of the elastic part. More importantly, during the reciprocating extrusion of the elastic lateral extrusion mechanism, the elastic part can maintain the sealing of the flexible stop cover to prevent rock and soil debris from entering the interior of the flexible stop cover and polluting the internal transmission structure; the remaining fixed joints between the rotary drilling mechanism and the flexible stop cover are also sealed in a suitable manner.

[0022] Furthermore, the reciprocating extrusion drive mechanism includes a central shaft and a lifting guide assembly, the central shaft is rotatably arranged in a rotating groove, and the lifting guide assembly array is arranged on the central shaft.

[0023] Preferably, the lifting guide assembly includes a guide cylinder and a guide boss, the guide cylinder is fixed to the central shaft, and the side surface of the guide cylinder is evenly distributed with vertical slide grooves and inclined slide grooves in an annular shape, the vertical slide grooves and inclined slide grooves are alternately arranged, one end of the inclined slide groove is through-connected with the top end of a vertical slide groove, and the other end of the inclined slide groove is through-connected with the bottom end of another vertical slide groove, and the guide boss is slidably arranged in the vertical slide groove and the inclined slide groove.

[0024] By guiding the guide boss through the vertical slide groove and the inclined slide groove and continuously applying the elastic force to the reciprocating lifting spiral bracket by the reset spring, the reciprocating lifting spiral bracket can be driven to lift and reciprocate during the relative rotation of the two, and then the lifting and lowering movement of the reciprocating lifting spiral bracket can be used to drive the swinging pushing assembly and the elastic supporting assembly to move.

[0025] Furthermore, the extension rod assembly includes an external sleeve, an internal shaft rod and a connecting bearing. The extension rod assembly array is provided with several groups. The external sleeve is fixedly connected to the hollow spiral auger, the internal shaft rod is fixedly connected to the central shaft rod, and the external sleeve and the internal shaft rod are rotatably connected via a connecting bearing.

[0026] The length and quantity of the outer sleeve and the inner shaft rod can be flexibly matched according to the actual drilling depth.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] (1) Through the reciprocating motion of the elastic lateral extrusion mechanism and the reciprocating extrusion drive mechanism, the rock and soil debris can be squeezed in all directions while being transported upward. This not only avoids the problem of difficulty in discharging rock and soil debris when drilling deep holes, but also reinforces the side wall of the hole by extrusion, so as to facilitate subsequent measurement work after the drill bit is withdrawn.

[0029] (2) By squeezing and rotating the auger head, the auger head can be pushed deeper, and the rock and soil debris generated by the rotation can be continuously transported upward through the spiral conveyor trough and the hollow spiral auger. The debris is continuously transported upward during the side squeezing process. When the rock layer cannot be squeezed sideways, the debris can continue to be transported upward to the soil layer.

[0030] (3) The pressure sensor can provide feedback on the downward drilling pressure of the spiral drill head, and the pressure can also provide feedback on the hardness of the target position, thereby determining whether the current drilling position is a soil layer or a rock layer.

[0031] (4) Through the reciprocating motion of the elastic lateral extrusion mechanism, the debris can be pushed and squeezed in all directions, thereby completing the reinforcement of the hole wall and the processing of the debris.

[0032] (5) The reciprocating lifting of the reciprocating lifting spiral bracket can drive the swinging part to swing back and forth. The relative sliding of the telescopic slide plate and the swinging part can make the total length of the swinging part and the telescopic slide plate automatically adapt to the length of the lifting guide assembly, thereby achieving the technical purpose of pushing the debris to be squeezed toward the surroundings.

[0033] (6) By using an elastic telescopic top rod that can be extended and retracted and maintains its own length through a supporting spring, when the current position is in the soil layer, the elastic telescopic top rod pushes the swinging part to squeeze the debris into the soil layer. When the current position is in the rock layer, the rock layer cannot be compressed, so the swinging part cannot swing fully. At this time, the supporting spring will be compressed. The problem of jamming in this case can be avoided by the self-retraction of the elastic telescopic top rod.

[0034] (7) The flexible part is flexible and has a small ductility. Therefore, the flexible part can provide thrust to the rock and soil debris under the support of the swinging part, and can shrink and rebound slightly during the swinging of the swinging part, so that the flexible part always appears as a smooth curved surface; the elastic part is flexible and has a large elasticity. When the swinging part swings, it can shrink and rebound to avoid obvious wrinkles on the flexible stop cover. When the reciprocating lifting spiral bracket rises, the elastic part can extend to allow the flexible part to follow the swinging part. More importantly, during the reciprocating extrusion of the elastic lateral extrusion mechanism, the elastic part can maintain the sealing of the flexible stop cover, preventing rock and soil debris from entering the interior of the flexible stop cover and contaminating the internal transmission structure; the remaining fixed joints between the rotary drilling mechanism and the flexible stop cover are also sealed in a suitable manner.

[0035] (8) Through the guidance of the guide boss by the vertical slide groove and the inclined slide groove, combined with the elastic force continuously applied to the reciprocating lifting spiral bracket by the reset spring, the reciprocating lifting spiral bracket can be driven to move back and forth during the relative rotation of the two, and then the lifting movement of the reciprocating lifting spiral bracket can drive the swinging pusher assembly and the elastic support assembly to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A three-dimensional diagram of a detection drilling device for underground rock and soil layers proposed by the present invention;

[0037] Figure 2 A front view of a detection drilling device for underground rock and soil layers proposed by the present invention;

[0038] Figure 3 for Figure 2 A cross-sectional view along the cutting line AA;

[0039] Figure 4 for Figure 3 A cross-sectional view along the cutting line BB;

[0040] Figure 5 for Figure 4 A cross-sectional view along the cutting line CC;

[0041] Figure 6 This is a schematic diagram of an explosion of a detection drilling device for underground rock and soil layers proposed by the present invention;

[0042] Figure 7 for Figure 3 A partial enlarged view of point Ⅰ in the middle;

[0043] Figure 8 for Figure 5 A partial enlarged view of the middle II;

[0044] Fig. 9 for Figure 6 A partial enlarged view of the middle part III;

[0045] Fig.10 for Figure 6 A partial enlarged view of point IV in the middle.

[0046] Among them, 1. Rotary drilling mechanism, 2. Elastic lateral extrusion mechanism, 3. Reciprocating extrusion drive mechanism, 4. Extension rod assembly, 5. Spiral drill head, 6. Hollow spiral auger, 7. Pressure sensor, 8. Spiral conveying trough, 9. Rotating trough, 10. Center sleeve, 11. Spiral blade, 12. Longitudinal slide, 13. Bracket lifting and resetting assembly, 14. Swinging push assembly, 15. Elastic top support assembly, 16. Flexible stop cover, 17. Reciprocating lifting spiral bracket, 18. Reset spring, 19. Folding frame , 20, telescopic slide, 21, swing hinge seat, 22, elastic telescopic top rod, 23, top support spring, 24, flexible part, 25, elastic part, 26, spiral part, 27, vertical rod part, 28, circular ring part, 29, fixed part, 30, bending part, 31, swing part, 32, telescopic rod part, 33, central shaft rod, 34, lifting guide assembly, 35, guide cylinder, 36, guide boss, 37, vertical slide groove, 38, inclined slide groove, 39, external sleeve, 40, internal shaft rod, 41, connecting bearing.

[0047] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0050] like Figure 1 to Figure 10As shown, the present invention proposes an underground rock and soil layer detection drilling device, including a rotary drilling mechanism 1, an elastic lateral extrusion mechanism 2, a reciprocating extrusion drive mechanism 3 and an extension rod assembly 4, the elastic lateral extrusion mechanism 2 and the reciprocating extrusion drive mechanism 3 are arranged on the rotary drilling mechanism 1, and the extension rod assembly 4 is arranged on the elastic lateral extrusion mechanism 2 and the reciprocating extrusion drive mechanism 3.

[0051] Through the reciprocating motion of the elastic lateral extrusion mechanism 2 and the reciprocating extrusion drive mechanism 3, the rock and soil debris can be squeezed in all directions while being transported upward, which not only avoids the problem of difficulty in discharging rock and soil debris when drilling deep holes, but also reinforces the side walls of the hole by extrusion, so as to facilitate subsequent measurement work after withdrawing the drill bit.

[0052] The rotary drilling mechanism 1 includes a spiral drilling head 5 and a hollow spiral auger 6. The hollow spiral auger 6 and the spiral drilling head 5 are relatively fixedly arranged. A spiral conveying groove 8 is provided on the side of the spiral drilling head 5, and a rotating groove 9 is provided on the top of the spiral drilling head 5. The hollow spiral auger 6 consists of a central sleeve 10 and spiral blades 11. The central sleeve 10 is provided with a longitudinal slide groove 12 in a ring array.

[0053] By squeezing and rotating the spiral drilling head 5, on the one hand, the spiral drilling head 5 can be pushed toward the depth, and on the other hand, the rock and soil debris generated by the rotation can be continuously transported upward through the spiral conveying trough 8 and the hollow spiral auger 6, and continuously transported upward during the process of squeezing toward the side. When the position of the rock layer cannot be squeezed toward the side, the debris can continue to be transported upward to the position of the soil layer.

[0054] The rotary drilling mechanism 1 further comprises a pressure sensor 7 , which is arranged between the auger head 5 and the hollow auger 6 . The relative squeezing force between the auger head 5 and the hollow auger 6 can be fed back via the pressure sensor 7 .

[0055] The pressure sensor 7 can provide feedback on the downward drilling pressure of the spiral drilling head 5, and the hardness of the target position can be fed back through the pressure, thereby determining whether the current drilling position is a soil layer or a rock layer.

[0056] The elastic lateral extrusion mechanism 2 includes a bracket lifting and resetting assembly 13, a swinging and pushing assembly 14, an elastic top support assembly 15 and a flexible stop cover 16. The bracket lifting and resetting assembly 13 is arranged on the rotary drilling mechanism 1, and the swinging and pushing assembly 14 rotates on the rotary drilling mechanism 1. The elastic top support assembly 15 is rotatably arranged between the bracket lifting and resetting assembly 13 and the swinging and pushing assembly 14. The swinging and pushing assembly 14 and the elastic top support assembly 15 are arranged along a spiral line array, and the flexible stop cover 16 covers the outside of the swinging and pushing assembly 14.

[0057] The reciprocating motion of the elastic lateral extrusion mechanism 2 can push and squeeze the debris in all directions, thereby completing the reinforcement of the hole wall and the processing of the debris.

[0058] The bracket lifting and resetting assembly 13 includes a reciprocating lifting spiral bracket 17 and a reset spring 18. The reciprocating lifting spiral bracket 17 is slidably lifted and arranged in the central sleeve 10. The reciprocating lifting spiral bracket 17 is composed of a spiral portion 26 and a vertical rod portion 27 that are arranged crosswise with each other. A circular ring portion 28 is provided at the bottom of the vertical rod portion 27. The reset spring 18 is arranged between the circular ring portion 28 and the spiral drilling head 5.

[0059] The swing pushing assembly 14 includes a folding frame 19, a telescopic slide 20 and a swinging hinge seat 21. The folding frame 19 is composed of a fixed part 29, a bending part 30 and a swinging part 31. The fixed part 29 is fixedly connected to the bottom of the spiral blade 11. The swinging part 31 and the fixed part 29 are connected by a deformable bending part 30. The telescopic slide 20 is snap-fitted and slidably arranged on the swinging part 31, and the swinging hinge seat 21 is fixedly connected to the swinging part 31.

[0060] The reciprocating lifting of the reciprocating lifting spiral bracket 17 can push the swinging part 31 to swing back and forth, and the relative sliding of the telescopic slide 20 and the swinging part 31 can make the total length of the swinging part 31 and the telescopic slide 20 automatically adapt to the length of the lifting guide assembly 34, thereby achieving the technical purpose of pushing the debris to be squeezed toward the surroundings.

[0061] The elastic supporting assembly 15 includes an elastic telescopic top rod 22 and a supporting spring 23. One end of the elastic telescopic top rod 22 is rotatably arranged on the spiral portion 26, and the other end of the elastic telescopic top rod 22 is rotatably arranged on the swing hinge seat 21. A telescopic rod portion 32 is arranged in the middle of the elastic telescopic top rod 22. The total length of the elastic telescopic top rod 22 can be changed by the extension and contraction of the telescopic rod portion 32. The supporting spring 23 is sleeved on the elastic telescopic top rod 22. Under the elastic force of the supporting spring 23, the elastic telescopic top rod 22 has a tendency to maintain its own length.

[0062] By using the elastic telescopic top rod 22 that can be extended and retracted and maintains its own length through the supporting spring 23, when the current position is in the soil layer, the elastic telescopic top rod 22 pushes the swinging part 31 to squeeze the debris into the soil layer. When the current position is in the rock layer, the rock layer cannot be compressed and the swinging part 31 cannot swing fully. At this time, the supporting spring 23 will be compressed. The problem of jamming in this case can be avoided by the self-retraction of the elastic telescopic top rod 22.

[0063] The flexible stop cover 16 is composed of a flexible portion 24 and an elastic portion 25. The end of the flexible portion 24 is fixedly connected to the bottom of the spiral blade 11. The flexible portion 24 is arranged outside the swinging portion 31. One end of the elastic portion 25 is fixedly connected to the top of the spiral blade 11. The telescopic slide 20 is fixedly connected to the other end of the spiral blade 11.

[0064] The flexible portion 24 is flexible and has a small ductility, so the flexible portion 24 can provide thrust to rock and soil debris under the support of the swing portion 31, and can shrink and rebound slightly during the swinging of the swing portion 31, so that the flexible portion 24 always appears as a smooth curved surface; the elastic portion 25 is flexible and has a large elasticity. When the swing portion 31 swings, it can avoid obvious wrinkles on the flexible stop cover 16 by shrinking and rebounding itself. When the reciprocating lifting spiral bracket 17 rises, the elastic portion 25 can extend to allow the flexible portion 24 to follow the swing portion 31. More importantly, during the reciprocating extrusion of the elastic lateral extrusion mechanism 2, the elastic portion 25 can maintain the sealing of the flexible stop cover 16 to prevent rock and soil debris from entering the interior of the flexible stop cover 16 and polluting the internal transmission structure; the remaining fixed joints between the rotary drilling mechanism 1 and the flexible stop cover 16 are also sealed in a suitable manner.

[0065] The reciprocating extrusion driving mechanism 3 includes a central shaft 33 and a lifting guide assembly 34 . The central shaft 33 is rotatably disposed in the rotating groove 9 , and the lifting guide assembly 34 is arranged in an array on the central shaft 33 .

[0066] The lifting guide assembly 34 includes a guide cylinder 35 and a guide boss 36. The guide cylinder 35 is fixed to the central shaft 33. The side of the guide cylinder 35 is evenly distributed with vertical slide grooves 37 and inclined slide grooves 38 in an annular shape. The vertical slide grooves 37 and the inclined slide grooves 38 are alternately arranged. One end of the inclined slide groove 38 is through-connected with the top end of a vertical slide groove 37, and the other end of the inclined slide groove 38 is through-connected with the bottom end of another vertical slide groove 37. The guide boss 36 is slidably arranged in the vertical slide groove 37 and the inclined slide groove 38.

[0067] By guiding the guide boss 36 through the vertical slide groove 37 and the inclined slide groove 38, combined with the elastic force continuously applied to the reciprocating lifting spiral bracket 17 by the reset spring 18, the reciprocating lifting spiral bracket 17 can be driven to reciprocate during the relative rotation of the two, and then the swing pushing assembly 14 and the elastic supporting assembly 15 can be driven to move through the lifting and lowering movement of the reciprocating lifting spiral bracket 17.

[0068] The extension rod assembly 4 includes an outer sleeve 39, an inner shaft rod 40 and a connecting bearing 41. The extension rod assembly 4 is arranged in an array in several groups. The outer sleeve 39 is fixedly connected to the hollow spiral auger 6, and the inner shaft rod 40 is fixedly connected to the central shaft rod 33. The outer sleeve 39 and the inner shaft rod 40 are rotatably connected via the connecting bearing 41.

[0069] The length and number of the outer sleeve 39 and the inner shaft rod 40 can be flexibly matched according to the actual drilling depth.

[0070] In specific use, this technical solution is mainly applicable to the situation where the thin rock layers with unknown quantity and position are distributed in the soil. According to the thickness of the rock layer in the target area, a hollow spiral auger 6 of appropriate length is selected.

[0071] First, the user needs to insert the device into a pre-drilled shallow hole, and then connect the internal shaft 40 through an external pressure device, the external pressure device applies a force to the internal shaft 40 to make it descend, but keeps it from rotating; connect the external sleeve 39 through an external rotating device, the external rotating device applies a force to the external sleeve 39 to make it rotate, at this time the external rotating device can press the external sleeve 39 down at the same time depending on the situation; it can also not press down, but press the external sleeve 39 down through the internal shaft 40.

[0072] During the process of the spiral drilling head 5 rotating and pressing down, the soil and rock layers will be cut to form debris, which will be transported upward through the spiral conveying trough 8 to the angle formed by the flexible part 24 and the elastic part 25. Since the elastic part 25 is flatly laid on the spiral blade 11, when the hollow spiral auger 6 and the spiral drilling head 5 rotate together, the rock and soil debris can be continuously transported upward through the spiral blade 11.

[0073] Since the outer sleeve 39 rotates while the inner shaft 40 does not rotate, when the reciprocating lifting spiral bracket 17 rotating along with the outer sleeve 39 and the guide cylinder 35 fixed to the inner shaft 40 produce relative rotation, the guide boss 36 will slide in the vertical slide groove 37 and the inclined slide groove 38, thereby driving the reciprocating lifting spiral bracket 17 to reciprocate.

[0074] The flexible portion 24 is flexible and has a small ductility, so that the flexible portion 24 can provide thrust to the rock and soil debris under the support of the swing portion 31, and can shrink and rebound slightly during the swinging of the swing portion 31, so that the flexible portion 24 always appears as a smooth curved surface; the elastic portion 25 is flexible and has a large elasticity. When the swing portion 31 swings, it can avoid obvious wrinkles on the flexible stop cover 16 through its own shrinkage and rebound. When the reciprocating lifting spiral bracket 17 rises, the elastic portion 25 can be extended to allow the flexible portion 24 to follow the movement of the swing portion 31.

[0075] Since the telescopic slide 20 is fixed to the elastic part 25, the telescopic slide 20 always has a tendency to stick to the spiral blade 11 during the process of adaptively adjusting itself to slide on the swing part 31, and it will not get stuck as easily as if a spring is provided between the swing part 31 and the telescopic slide 20.

[0076] When the reciprocating lifting spiral bracket 17 descends, the elastic telescopic top rod 22 pushes the swinging part 31 to swing, and the swinging of the swinging part 31 pushes the flexible part 24 to move in all directions, thereby squeezing the rock and soil debris into the surrounding soil, which can not only handle the debris, but also strengthen the hole wall;

[0077] If the swinging portion 31 and the flexible portion 24 are swinging and squeezing, the current position is at the rock layer. Since the rock layer cannot be compressed, the swinging resistance of the swinging portion 31 will be too large. At this time, the elastic telescopic top rod 22 will overcome the elastic force of the supporting spring 23 and retract. The retraction of the elastic telescopic top rod 22 can make the reciprocating lifting spiral bracket 17 still smoothly lift and lower without being affected and will not get stuck; and the debris here will continue to be transported upward. If the top cannot continue to be transported upward, it will follow the hollow spiral auger 6 to descend until it reaches the soil layer and is squeezed to the surroundings.

[0078] The extension rod assembly 4 is a preassembled assembly with various length specifications. During the continuous drilling process, suitable models can be continuously installed.

[0079] During the drilling process, the pressure sensor 7 can provide real-time feedback of the current drilling resistance, and further feedback of the hardness of the current drilling position, so as to determine the distribution position and thickness of the rock formation based on the distribution curve of hardness and depth.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0081] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A detection drilling device for underground rock and soil layers, characterized in that: It comprises a rotary drilling mechanism (1), an elastic lateral extrusion mechanism (2), a reciprocating extrusion drive mechanism (3) and an extension rod assembly (4), wherein the elastic lateral extrusion mechanism (2) and the reciprocating extrusion drive mechanism (3) are arranged on the rotary drilling mechanism (1), and the extension rod assembly (4) is arranged on the elastic lateral extrusion mechanism (2) and the reciprocating extrusion drive mechanism (3); The elastic lateral extrusion mechanism (2) comprises a support lifting and resetting assembly (13), a swinging and pushing assembly (14), an elastic supporting assembly (15) and a flexible stop cover (16); the support lifting and resetting assembly (13) is arranged on the rotary drilling mechanism (1); the swinging and pushing assembly (14) rotates on the rotary drilling mechanism (1); the elastic supporting assembly (15) is rotatably arranged between the support lifting and resetting assembly (13) and the swinging and pushing assembly (14); the swinging and pushing assembly (14) and the elastic supporting assembly (15) are arranged along a spiral array; and the flexible stop cover (16) covers the outside of the swinging and pushing assembly (14); The rotary drilling mechanism (1) comprises a spiral drilling head (5) and a hollow spiral auger (6); the hollow spiral auger (6) and the spiral drilling head (5) are relatively fixedly arranged; a spiral conveying groove (8) is provided on the side of the spiral drilling head (5); a rotating groove (9) is provided on the top of the spiral drilling head (5); the hollow spiral auger (6) is composed of a central sleeve (10) and spiral blades (11); and a longitudinal slide groove (12) is provided in an annular array on the central sleeve (10).

2. The underground rock and soil layer detection drilling device according to claim 1, characterized in that: The rotary drilling mechanism (1) further comprises a pressure sensor (7), wherein the pressure sensor (7) is arranged between the spiral drilling head (5) and the hollow spiral auger (6), and the relative squeezing force between the spiral drilling head (5) and the hollow spiral auger (6) can be fed back via the pressure sensor (7).

3. The underground rock and soil layer detection drilling device according to claim 2 is characterized in that: The support lifting and resetting assembly (13) comprises a reciprocating lifting spiral support (17) and a resetting spring (18). The reciprocating lifting spiral support (17) is slidably lifted in the central sleeve (10). The reciprocating lifting spiral support (17) is composed of a spiral portion (26) and a vertical rod portion (27) arranged crosswise with each other. A circular ring portion (28) is provided at the bottom of the vertical rod portion (27). The resetting spring (18) is arranged between the circular ring portion (28) and the spiral drilling head (5).

4. The underground rock and soil layer detection drilling device according to claim 3, characterized in that: The swing pusher assembly (14) comprises a foldable frame (19), a telescopic slide plate (20) and a swing hinge seat (21); the foldable frame (19) comprises a fixed portion (29), a bending portion (30) and a swing portion (31); the fixed portion (29) is fixedly connected to the bottom of the spiral blade (11); the swing portion (31) and the fixed portion (29) are connected via a deformable bending portion (30); the telescopic slide plate (20) is slidably engaged with the swing portion (31); and the swing hinge seat (21) is fixedly connected to the swing portion (31).

5. The underground rock and soil layer detection drilling device according to claim 4, characterized in that: The elastic supporting assembly (15) comprises an elastic telescopic supporting rod (22) and a supporting spring (23); one end of the elastic telescopic supporting rod (22) is rotatably mounted on the spiral portion (26); the other end of the elastic telescopic supporting rod (22) is rotatably mounted on the swing hinge seat (21); a telescopic rod portion (32) is provided in the middle of the elastic telescopic supporting rod (22); the total length of the elastic telescopic supporting rod (22) can be changed by telescoping the telescopic supporting rod portion (32); the supporting spring (23) is sleeved on the elastic telescopic supporting rod (22); and under the elastic force of the supporting spring (23), the elastic telescopic supporting rod (22) has a tendency to maintain its own length.

6. The underground rock and soil layer detection drilling device according to claim 5, characterized in that: The flexible stop cover (16) is composed of a flexible portion (24) and an elastic portion (25), the end of the flexible portion (24) is fixedly connected to the bottom of the spiral blade (11), the flexible portion (24) is arranged outside the swing portion (31), one end of the elastic portion (25) is fixedly connected to the top of the spiral blade (11), and the telescopic slide plate (20) is fixedly connected to the other end of the spiral blade (11).

7. The underground rock and soil layer detection drilling device according to claim 6, characterized in that: The reciprocating extrusion drive mechanism (3) comprises a central shaft (33) and a lifting guide assembly (34); the central shaft (33) is rotatably disposed in a rotating groove (9); and the lifting guide assembly (34) is arranged in an array on the central shaft (33).

8. The underground rock and soil layer detection drilling device according to claim 7, characterized in that: The lifting guide assembly (34) comprises a guide cylinder (35) and a guide boss (36). The guide cylinder (35) is fixedly connected to the central shaft (33). The side surface of the guide cylinder (35) is evenly distributed with vertical slide grooves (37) and inclined slide grooves (38) in an annular shape. The vertical slide grooves (37) and the inclined slide grooves (38) are alternately arranged. One end of the inclined slide groove (38) is connected to the top end of one vertical slide groove (37), and the other end of the inclined slide groove (38) is connected to the bottom end of another vertical slide groove (37). The guide boss (36) is slidably arranged in the vertical slide groove (37) and the inclined slide groove (38).

9. The underground rock and soil layer detection drilling device according to claim 8, characterized in that: The extension rod assembly (4) comprises an outer sleeve (39), an inner shaft rod (40) and a connecting bearing (41). The extension rod assembly (4) is provided with a plurality of groups in an array. The outer sleeve (39) is fixedly connected to the hollow spiral auger (6), and the inner shaft rod (40) is fixedly connected to the central shaft rod (33). The outer sleeve (39) and the inner shaft rod (40) are rotatably connected via the connecting bearing (41).

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