Geotechnical investigation powder sample collecting and drilling device

Abstract

The invention discloses a geotechnical investigation powder sample collecting and drilling device which comprises a supporting plate, the upper side of the supporting plate is fixedly connected with a support, the support is fixedly connected with a hydraulic telescopic rod, the supporting plate is rotationally connected with an outer drilling barrel, the upper end of the outer drilling barrel is fixedly connected with a transverse plate, and the transverse plate is vertically and slidably connected with a storage pipe. The lower end of the hydraulic telescopic rod is fixedly connected with a circular ring, the circular ring is rotatably connected with the storage pipe, the inner wall of the outer drilling barrel is provided with at least two exhaust pipelines, the upper ends of the exhaust pipelines are provided with air outlets, the lower ends of the exhaust pipelines are provided with exhaust holes, the inner wall of the outer drilling barrel is provided with rotating grooves, and the rotating grooves are internally and rotatably connected with covering rings which are provided with through holes. And the through hole can be independently communicated with one exhaust pipeline. Switching is correspondingly formed through the exhaust pipeline, and rock and soil samples of different depths are prevented from being mixed with one another.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical exploration, and in particular to a geotechnical exploration powder sample collection drilling device. Background Art

[0002] When conducting geotechnical investigations, the side walls of the drilled holes are prone to collapse, causing the rock and soil at different depths to mix, which will lead to poor stratification of the samples taken and destroy the representativeness of different depths. This will ultimately lead to slow progress in the geotechnical investigation and cause a large deviation between the geotechnical depth distribution result data obtained from the geotechnical investigation and the actual geotechnical depth distribution data.

[0003] The prior art already has devices that preliminarily solve the above problems, such as the intelligent drilling device with sample collection function for geotechnical engineering survey with patent authorization (announcement) number: CN114718455B. A small collection tube for collecting samples is provided inside the drill pipe, and a vacuum generator generates low pressure inside the collection tube, so that the rock and soil powder is evenly sucked into the collection tube. During this period, the speed and time of the drill bit drilling are controlled by the infrared ranging probe, ensuring that the distribution state of the rock and soil samples at different depths collected in the collection tube is close to the actual distribution state of the rock and soil samples at different depths.

[0004] Since powder is easy to float, when similar equipment is used to extract rock and soil powder, rock and soil samples at different depths are easily partially adulterated, thus affecting the survey results. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a rock and soil exploration powder sample collection drilling device, thereby solving the problems of the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A drilling device for collecting powder samples for geotechnical exploration, comprising a support plate, the upper side of the support plate is fixedly connected to a bracket, the bracket is fixedly connected to a hydraulic telescopic rod, the support plate is rotatably connected to an outer drill tube, the upper end of the outer drill tube is fixedly connected to a horizontal plate, the horizontal plate is vertically slidably connected to a storage tube, the storage tube is coaxial with the outer drill tube, the lower end of the hydraulic telescopic rod is fixedly connected to a ring, and the ring is rotatably connected to the storage tube;

[0008] At least two air extraction pipelines are arranged on the inner wall of the outer drill tube, an air outlet is arranged on the upper end of the air extraction pipeline, an air extraction hole is arranged on the lower end of the air extraction pipeline, a rotating groove is arranged on the inner wall of the outer drill tube, a cover ring is rotatably connected in the rotating groove, and a through hole is arranged on the cover ring, and the through hole can be connected to one of the air extraction pipelines separately;

[0009] The storage tube is lowered through the toggle device to make the covering ring rotate in one direction.

[0010] Preferably, the bottom of the storage tube is fixedly connected to a blocking plate, grinding teeth are evenly arranged at the bottom of the blocking plate, a slag inlet slot is arranged at the bottom of the blocking plate, and the upper side of the blocking plate is rotatably connected to a cover plate through a torsion spring, and the cover plate is arranged corresponding to the slag inlet slot.

[0011] Preferably, the bottom of the support plate is fixedly connected to a support rod, the support rod is fixedly connected to an exhaust hood, the exhaust hood is rotatably connected to a support ring, the support ring is fixedly connected to an outer drill tube, two slots are provided at the bottom of the support ring, a filter collection box is fixedly connected to the slots, air vents are provided on the inner walls on both sides of the slots, and the air outlet holes are connected to the air vents.

[0012] Preferably, the toggle device includes a unidirectionally rotating inclined rod, a cushion block, a first cylinder, a second cylinder and a unidirectionally rotating limiting rod. The outer wall of the storage tube is rotatably connected to the first cylinder, the upper side of the covering ring is rotatably connected to the inclined rod and a torsion spring is provided, the upper side of the covering ring is fixedly connected to the cushion block, the cushion block is used to support the inclined rod, the upper side of the covering ring is fixedly connected to the second cylinder, an avoidance groove is provided on the inner wall of the outer drill tube, the limiting rod is rotatably connected in the avoidance groove and a torsion spring is provided, the first cylinder is correspondingly provided to the inclined rod, and the second cylinder is correspondingly provided to the limiting rod.

[0013] Preferably, the storage tube is fixedly connected to the piston ring, the piston ring is provided with a plurality of air supply holes, the lower ends of the air supply holes are fixedly connected to the covering rubber pad, the covering ring is provided with a plurality of inclined holes in an annular array, the lower ends of the inclined holes are fixedly connected to the covering pad.

[0014] Preferably, the upper end of the storage tube is fixedly connected to the dust extraction tube.

[0015] The advantages of the present invention are as follows: a rock and soil exploration powder sample collection drilling device provided by the present invention extracts the rock and soil powder at the depth through one of the exhaust pipelines and collects it into one of the filter collection boxes; the storage tube descends relative to the outer drill tube through the hydraulic telescopic rod, and the rock and soil between the first depth and the second depth are crushed and put into the storage tube, and then the storage tube rises relative to the outer drill tube and resets to form a state structure. At this time, the exhaust pipeline is switched accordingly. On the one hand, the rock and soil between the first depth and the second depth are separated, and on the other hand, the rock and soil powder samples at the first depth and the rock and soil powder samples at the second depth are clearly separated, and are finally stored in different filter collection boxes. The rock and soil powders at different depths are fully isolated to avoid mutual confusion.

[0016] The present invention discharges the gas in the cavity between the piston ring and the cover ring through the inclined hole, and during the discharge, the cavity at the bottom of the cover ring is purged, so as to clean the residual rock and soil powder at the first depth; when the piston ring rises along with the storage tube, the air on the piston ring pushes open the covering rubber pad and the lower end of the inclined hole is blocked by the covering pad, and the air on the piston ring is replenished into the cavity between the piston ring and the cover ring, so that the residual rock and soil powder is cleaned during the drilling process to the next depth; further, the upper end of the storage tube is fixedly connected to the dust extraction pipe, and the rock and soil powder in the interval is extracted through the dust extraction pipe through the storage tube, so that the rock and soil powder samples at different depths are clearly separated, thereby ensuring independence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a basic structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure inside the present invention;

[0019] Figure 3 It is a schematic diagram of the connection structure between the support ring and the filter collection box in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the toggle device of the present invention;

[0021] Figure 5 The present invention Figure 4 Another perspective view of . DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Example 1

[0024] like Figures 1 to 5 As shown, a rock and soil exploration powder sample collection drilling device provided by the present invention comprises a support plate 1, the support plate 1 is fixed to an existing lifting cylinder by bolts, the upper side of the support plate 1 is fixedly connected to a bracket 11, the bracket 11 is fixedly connected to a hydraulic telescopic rod 12, the support plate 1 is rotatably connected to an outer drill tube 2, the upper end of the outer drill tube 2 is fixedly connected to a horizontal plate 3, the horizontal plate 3 is vertically slidably connected to a storage tube 4, the storage tube 4 is coaxial with the outer drill tube 2, the lower end of the hydraulic telescopic rod 12 is fixedly connected to a circular ring 121, the circular ring 121 is rotatably connected to the storage tube 4, the hydraulic telescopic rod 12 controls the storage tube 4 to rise and fall relative to the outer drill tube 2, and the outer drill tube 2 and the storage tube 4 keep rotating synchronously;

[0025] At least two air extraction pipelines 21 are arranged on the inner wall of the outer drill tube 2. The air extraction pipeline 21 is connected to a conventional air pump. An air outlet 22 is arranged on the upper end of the air extraction pipeline 21. An air extraction hole 23 is arranged on the lower end of the air extraction pipeline 21. A rotating groove 24 is arranged on the inner wall of the outer drill tube 2. A covering ring 25 is rotatably connected in the rotating groove 24. The covering ring 25 is provided with a through hole 26. The through hole 26 can be connected to one of the air extraction pipelines 21 separately. The air extraction pipeline 21 extracts rock and soil powder. The through hole 26 of the covering ring 25 is connected to one of the air extraction pipelines 21 to extract rock and soil powder at the first depth. The outer drill tube 2 and the storage tube 4 continue to go deeper. The covering ring 25 rotates an angle, the previous air extraction pipeline 21 is blocked, and the next air extraction pipeline 21 is connected to the through hole 26 of the covering ring 25 to extract rock and soil powder at the next position.

[0026] The bottom of the support plate 1 is fixedly connected to the support rod 6, and the support rod 6 is fixedly connected to the exhaust hood 61. The exhaust hood 61 is rotatably connected to the support ring 62. The exhaust hood 61 covers the outside of the support ring 62 and exhausts air through a vacuum pump. The support ring 62 is fixedly connected to the outer drill tube 2. Two slots 63 are set at the bottom of the support ring 62. The filter collection box 64 is fixedly connected in the slot 63. The filter plates on both sides of the filter collection box 64 use meshes of different sizes according to needs, so that rock and soil powder of required particle size can be retained therein. Vents 65 are set on the inner walls of both sides of the slot 63. The air outlet 22 is connected to the vent 65. The exhaust hood 61 is used for exhaust. When the lower end of the exhaust pipeline 21 is in an open state, the inner cavity at the lower end of the outer drill tube 2-one of the exhaust pipelines 21-the air outlet 22 and the vent 65-the filter collection box 64-the exhaust hood 61 forms an exhaust route;

[0027] The storage tube 4 descends and causes the covering ring 25 to rotate unidirectionally through the toggle device 5, thereby changing the through hole 26 of the covering ring 25 to connect with different exhaust pipes 21, and implementing unidirectional intermittent rotation in a narrow space (a space where conventional drive structures such as motors cannot be installed), which is convenient for extracting rock and soil powder at different depths.

[0028] The present invention firstly drills a hole by means of a drilling rig, and the outer drill tube 2 and the storage tube 4 are first synchronously lowered to a first depth, and the crushing teeth at the lower end of the outer drill tube 2 crush the rock and soil, and the rock and soil powder at the depth is extracted through one of the exhaust pipes 21 and collected in one of the filter collection boxes 64; the storage tube 4 is lowered relative to the outer drill tube 2 by means of the hydraulic telescopic rod 12, and the rock and soil between the first depth and the second depth are crushed into the storage tube 4, and then the storage tube 4 rises relative to the outer drill tube 2 and resets to form Figure 2 State structure, at this time, the exhaust pipeline 21 is switched accordingly. On the one hand, the rock and soil between the first depth and the second depth are separated. On the other hand, the rock and soil powder samples at the first depth and the rock and soil powder samples at the second depth are clearly separated and finally stored in different filter collection boxes 64. The rock and soil powders at different depths are fully isolated to avoid mixing with each other.

[0029] Example 2

[0030] like Figure 4 As shown, the bottom of the storage tube 4 is fixedly connected to a plugging plate 41, grinding teeth 42 are evenly arranged at the bottom of the plugging plate 41, a slag inlet slot 43 is arranged at the bottom of the plugging plate 41, and the upper side of the plugging plate 41 is rotatably connected to a cover plate through a torsion spring, and the cover plate is arranged corresponding to the slag inlet slot 43. As needed, a spiral feed rod can be added to the storage tube 4 to discharge the excavated rock and soil from the ground. When drilling further, the broken rock and soil are squeezed into the slag inlet slot 43 and temporarily stored in the storage tube 4, so that the rock and soil at different depths are clearly separated, thereby facilitating the complete retention of the rock and soil properties at different depths.

[0031] Example 3

[0032] like Figure 4 and Figure 5 As shown, the toggle device 5 includes a unidirectional rotating inclined rod 51, a cushion block 52, a first cylinder 53, a second cylinder 54 and a unidirectional rotating limiting rod 55. The outer wall of the storage tube 4 is rotatably connected to the first cylinder 53. The upper side of the covering ring 25 is rotatably connected to the inclined rod 51 and is provided with a torsion spring. The upper side of the covering ring 25 is fixedly connected to the cushion block 52, and the cushion block 52 is used to support the inclined rod 51. The upper side of the covering ring 25 is fixedly connected to the second cylinder 54. An avoidance groove 56 is provided on the inner wall of the outer drill tube 2. The limiting rod 55 is rotatably connected in the avoidance groove 56 and is provided with a torsion spring. The first cylinder 53 is provided corresponding to the inclined rod 51, and the second cylinder 54 is provided corresponding to the limiting rod 55.

[0033] The covering ring 25 is relatively still, the storage tube 4 descends relative to the covering ring 25, and the first cylinder 53 presses the inclined rod 51 downward. Due to the inclination of the inclined rod 51, the covering ring 25 rotates. When the first cylinder 53 rises, the rear inclined rod 51 rotates upward to avoid it. After the first cylinder 53 passes, the torsion spring resets the inclined rod 51. At this time, the first cylinder 53 reaches the top of the rear inclined rod 51, and the first cylinder 53 can descend again to act on the inclined rod 51, so that the covering ring 25 can rotate unidirectionally in more than one direction, so that the through hole 26 of the covering ring 25 is connected to one of the exhaust pipes 21, and the air path for extracting rock and soil powder is separated, so that the extracted powder will not be mixed.

[0034] Example 4

[0035] like Figure 2 , Figure 4 and Figure 5 As shown, the storage tube 4 is fixedly connected to the piston ring 7, the piston ring 7 is provided with a plurality of air supply holes 71, the lower end of the air supply hole 71 is fixedly connected to the covering rubber pad 72, the covering ring 25 is provided with a plurality of inclined holes 73 in an annular array, and the lower end of the inclined hole 73 is fixedly connected to the covering pad;

[0036] The covering rubber pad 72 and the covering pad are both made of rubber, and are fixed at at least three local points around them. As the storage tube 4 descends, the covering rubber pad 72 elastically resets and covers the lower end of the air replenishing hole 71. The gas in the cavity between the piston ring 7 and the covering ring 25 is discharged through the inclined hole 73 (the covering pad at the lower end of the inclined hole 73 is pushed open). When discharged, the cavity at the bottom of the covering ring 25 is purged to facilitate cleaning of the residual rock and soil powder at the first depth. When the piston ring 7 rises with the storage tube 4, the air on the upper part of the piston ring 7 pushes open the covering rubber pad 72 and the lower end of the inclined hole 73 is blocked by the covering pad. The air on the upper part of the piston ring 7 is supplemented to the cavity between the piston ring 7 and the covering ring 25, thereby cleaning the residual rock and soil powder during the process of drilling to the next depth. Furthermore, the upper end of the storage tube 4 is fixedly connected to the dust extraction pipe, and the rock and soil powder in the interval is extracted through the dust extraction pipe through the storage tube 4, so that a clear separation is formed between the rock and soil powder samples of different depths, thereby ensuring independence.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling device for collecting powder samples for geotechnical exploration, comprising a support plate (1), the upper side of the support plate (1) is fixedly connected to a bracket (11), the bracket (11) is fixedly connected to a hydraulic telescopic rod (12), the support plate (1) is rotatably connected to an outer drill tube (2), the upper end of the outer drill tube (2) is fixedly connected to a transverse plate (3), the transverse plate (3) is vertically slidably connected to a storage tube (4), the storage tube (4) is coaxial with the outer drill tube (2), the lower end of the hydraulic telescopic rod (12) is fixedly connected to a circular ring (121), the circular ring (121) is rotatably connected to the storage tube (4), and the characteristics are: At least two air extraction pipelines (21) are arranged on the inner wall of the outer drill tube (2), an air outlet hole (22) is arranged at the upper end of the air extraction pipeline (21), and an air extraction hole (23) is arranged at the lower end of the air extraction pipeline (21); a rotating groove (24) is arranged on the inner wall of the outer drill tube (2), a cover ring (25) is rotatably connected in the rotating groove (24), and a through hole (26) is arranged on the cover ring (25), and the through hole (26) can be connected to one of the air extraction pipelines (21) separately; The storage tube (4) is lowered through the toggle device (5) to cause the covering ring (25) to rotate in one direction.

2. A drilling device for collecting powder samples for geotechnical investigation according to claim 1, characterized in that: The bottom of the storage tube (4) is fixedly connected to a plugging plate (41), the bottom of the plugging plate (41) is evenly provided with grinding teeth (42), the bottom of the plugging plate (41) is provided with a slag inlet slot (43), the upper side of the plugging plate (41) is rotatably connected to a cover plate via a torsion spring, and the cover plate is provided corresponding to the slag inlet slot (43).

3. A geotechnical exploration powder sample collection drilling device according to claim 2, characterized in that: The bottom of the support plate (1) is fixedly connected to a support rod (6), the support rod (6) is fixedly connected to an exhaust hood (61), the exhaust hood (61) is rotatably connected to a support ring (62), the support ring (62) is fixedly connected to an outer drill tube (2), two slots (63) are arranged at the bottom of the support ring (62), a filter collection box (64) is fixedly connected to the slots (63), ventilation holes (65) are arranged on the inner walls of both sides of the slots (63), and the air outlet holes (22) are connected to the ventilation holes (65).

4. The drilling device for collecting powder samples for geotechnical investigation according to claim 1, characterized in that: The toggle device (5) comprises a unidirectionally rotatable inclined rod (51), a cushion block (52), a first cylinder (53), a second cylinder (54) and a unidirectionally rotatable limiting rod (55); the outer wall of the storage tube (4) is rotatably connected to the first cylinder (53); the upper side of the covering ring (25) is rotatably connected to the inclined rod (51) and is provided with a torsion spring; the upper side of the covering ring (25) is fixedly connected to the cushion block (52); the cushion block (52) is used to support the inclined rod (51); the upper side of the covering ring (25) is fixedly connected to the second cylinder (54); an avoidance groove (56) is provided on the inner wall of the outer drill tube (2); the limiting rod (55) is rotatably connected in the avoidance groove (56) and is provided with a torsion spring; the first cylinder (53) is correspondingly arranged with the inclined rod (51); and the second cylinder (54) is correspondingly arranged with the limiting rod (55).

5. The rock and soil exploration powder sample collection drilling device according to claim 1, characterized in that: The storage tube (4) is fixedly connected to the piston ring (7), the piston ring (7) is provided with a plurality of air supply holes (71), the lower ends of the air supply holes (71) are fixedly connected to the covering rubber pad (72), the covering ring (25) is provided with a plurality of inclined holes (73) in an annular array, the lower ends of the inclined holes (73) are fixedly connected to the covering pad.

6. A geotechnical exploration powder sample collection drilling device according to claim 5, characterized in that: The upper end of the storage tube (4) is fixedly connected to the dust extraction tube.

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