Geological drilling device

Abstract

The invention belongs to the technical field of rock and soil layer drilling, and particularly relates to a geological drilling device which comprises an upper drilling assembly, a lower drilling assembly and a drilling assembly. The lower drilling assembly is used for drilling, fixing and storing the rock core; the upper drilling assembly and the lower drilling assembly are coaxially arranged; and the driving assembly is used for providing power for the upper drilling assembly and the lower drilling assembly and conveying the rock core to the ground. According to the geological drilling device, opposite drilling construction is conducted on a rock-soil layer through the upper drilling assembly and the lower drilling assembly, a rock core is prevented from falling into a tunnel, and the reaming construction efficiency and the construction safety coefficient are improved; the upper drilling assembly and the lower drilling assembly can further store the cut rock cores, the cut rock cores are conveyed to the ground through the driving assembly to be processed in a centralized mode, and the construction cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of rock and soil layer drilling, and in particular relates to a geological drilling device. Background Art

[0002] In the field of rock and soil drilling technology, the drilling construction of vertical ventilation holes in tunnels requires a drill bit to drill into the rock and soil layer to perform drilling and hole expansion operations; in the prior art, the drilling construction of vertical ventilation holes in tunnels often adopts a construction method of drilling the drill bit into the rock and soil layer from bottom to top, such as the construction method disclosed in the Chinese patent with announcement number CN112412467B, which is to drill the drill bit into the rock and soil layer from bottom to top to open vertical ventilation holes; using this construction method of drilling the rock and soil layer from bottom to top with a drill bit, the rock and soil cut by the drill bit will fall into the tunnel, and it is necessary to manually clean the rock and soil left by the drilling in the tunnel, which has a low safety factor and takes a long time to construct, resulting in low work efficiency and increased construction costs. Summary of the invention

[0003] Based on this, it is necessary to provide a geological drilling device to address the problem that the rock and soil cut in the tunnel in the prior art are difficult to handle, which will increase the construction cost and reduce the safety factor.

[0004] The above purpose is achieved through the following technical solutions: A geological drilling device comprises: an upper drilling assembly for drilling and storing rock cores; a lower drilling assembly for drilling, storing and fixing the drilled rock cores; the upper drilling assembly and the lower drilling assembly are coaxially arranged; and a driving assembly for providing power to the upper drilling assembly and the lower drilling assembly and conveying the rock cores to the ground.

[0005] The upper drilling assembly includes an upper extension tube and an upper cutter, the upper extension tube can store cut rock cores, and the upper cutter can cut rock and soil layers; the upper extension tube is provided with an upper end and a lower end, the upper end is provided with an internal thread, the lower end is provided with an external thread, and the upper cutter is threadedly connected to the upper extension tube; the number of upper extension tubes is at least one, and when the number of upper extension tubes is greater than one, multiple upper extension tubes are connected by threads.

[0006] Furthermore, it also includes a positioning rod, which is used to keep the upper drilling assembly and the lower drilling assembly coaxial.

[0007] Furthermore, the driving assembly comprises a first driving unit, and the first driving unit is used to drive the upper drilling assembly to rotate.

[0008] Furthermore, the driving assembly includes a first telescopic rod body, and the first telescopic rod body can provide a downward feeding force for the upper drilling assembly to cut the rock core downward.

[0009] Further, the lower drilling assembly includes a lower extension tube and a lower cutter, the lower extension tube can store the cut rock core, and the lower cutter can cut the rock and soil layer; The lower extension tube is provided with a first end and a second end, the first end is provided with an internal thread, the second end is provided with an external thread, and the lower cutting tool is threadedly connected to the lower extension tube; A clamping rack is provided on the outer wall of the lower extension tube, and the clamping rack is used to fix the lower extension tube; The number of the lower extension tube is at least one. When the number of the lower extension tube is greater than one, the multiple lower extension tubes are connected by threads.

[0010] Further, the lower drilling assembly is provided with a clamping wheel, and the clamping wheel is used to fix the drilled core; An inner groove is arranged on the inner wall of the lower extension tube, a first slideway is arranged on the inner groove, the first slideway is arranged in a direction with an angle with a tangent line of the inner wall of the lower extension tube, and the clamping wheel is slidably matched with the first slideway.

[0011] Furthermore, the driving assembly includes a second driving unit, and the second driving unit is used to drive the lower drilling assembly to rotate and fix the core.

[0012] Furthermore, it also includes a blocking ring, which is used to prevent debris from entering the second drive unit and reduce wear on the device.

[0013] Furthermore, the driving assembly includes a second telescopic rod body, which can provide an upward feeding force for the lower drilling assembly to cut the rock core and can transport the rock core to the ground.

[0014] The beneficial effects of the present invention are: 1. A geological drilling device of the present invention performs counter-drilling construction operations by means of upper and lower drilling assemblies, and the rock core is stored in the upper and lower extension tubes to prevent the rock core from falling into the tunnel, thereby increasing the efficiency of hole expansion construction and the safety factor of construction operations; 2. The upper and lower extension pipes can store the cut rock cores, and the cut rock cores can be sent to the ground for centralized processing by extending the lower telescopic rod, thus reducing construction costs; 3. The clamping wheel is set to fix the cut core, which increases the safety factor of construction and better preserves the cut core, so that it can be used as a rock and soil sample for experimental observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a geological drilling device of the present invention; Figure 2 A schematic diagram of the internal structure of a geological drilling device according to an embodiment of the present invention; Figure 3A cross-sectional view of an embodiment of a geological drilling device of the present invention; Figure 4 It is a partial structural schematic diagram of an embodiment of a geological drilling device of the present invention; Figure 5 A structural diagram of a lower cutting blade of an embodiment of a geological drilling device of the present invention; Figure 6 for Figure 5 A partial enlarged view of the middle A; Figure 7 It is a schematic structural diagram of a lower extension pipe of an embodiment of a geological drilling device of the present invention; in: 100, rock and soil layer; 110, tunnel; 120, rock core; 200, upper support frame; 210, lower support frame; 220, positioning rod; 300, upper drilling assembly; 310, upper extension tube; 320, upper cutting tool; 400, lower drilling assembly; 410, lower extension tube; 420, lower cutting blade; 430, clamping rack; 450, clamping wheel; 460, inner groove; 470, first slideway; 500, first driving unit; 510, first driving motor; 520, first transmission belt; 530, first rotating ring; 540, first telescopic rod; 600, second driving unit; 610, second driving motor; 620, second transmission belt; 630, second rotating ring; 640, shielding ring; 650, second telescopic rod. DETAILED DESCRIPTION

[0016] 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 through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0018] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] Refer to the following Figures 1 to 7 The geological drilling device provided by the embodiment of the present invention is described.

[0020] like Figures 1 to 4 As shown, it includes an upper support frame 200, a lower support frame 210, an upper drilling assembly 300, a lower drilling assembly 400 and a driving assembly (not shown in the drawings); the upper drilling assembly 300 is used for drilling and storing the core 120; the lower drilling assembly 400 is used for drilling, storing and fixing the drilled core 120; the upper drilling assembly 300 is coaxially arranged with the lower drilling assembly 400, and the driving assembly is used for providing power to the upper drilling assembly 300 and the lower drilling assembly 400, and transporting the core 120 to the ground.

[0021] During construction, the upper drilling assembly 300 is disposed on the ground above the rock formation and supported by the upper support frame 200 , and the lower drilling assembly 400 is disposed in the tunnel 110 below the rock formation and supported by the lower support frame 210 .

[0022] The upper drilling assembly 300 drills downward into the rock and soil layer 100, and the lower drilling assembly 400 drills upward into the rock and soil layer 100; the lower drilling assembly 400 stops rotating after drilling a certain distance, and reverses a certain angle to clamp and fix the core 120; the upper drilling assembly 300 continues to drill downward, and the core 120 is stored inside the upper drilling assembly 300 and the lower drilling assembly 400; when the upper drilling assembly 300 and the lower drilling assembly 400 separate the core 120 from the rock and soil layer 100, the driving assembly moves the upper drilling assembly 300, the lower drilling assembly 400 and the core 120 upward together until they are sent out of the rock and soil layer 100.

[0023] The upper drilling assembly 300 includes an upper extension tube 310 capable of storing the cut core 120 and an upper cutter 320 capable of cutting the rock layer 100 .

[0024] The upper extension tube 310 has an upper end and a lower end. The upper end is provided with an internal thread, and the lower end is provided with an external thread. The upper cutter 320 is threadedly connected to the upper extension tube 310 .

[0025] The number of the upper extension tube 310 is at least one. When the number of the upper extension tube 310 is greater than one, the plurality of upper extension tubes 310 are connected by threads.

[0026] The driving assembly can drive the upper extension tube 310 to rotate, and the upper cutting blade 320 can rotate when the upper extension tube 310 rotates, and the upper cutting blade 320 rotates to cut the rock layer 100. The driving assembly rotates the upper drilling assembly 300 and moves the upper drilling assembly 300 downward. When the drilling depth is greater than the length of the upper extension tube 310, multiple upper extension tubes 310 are connected by threads to increase the drilling depth.

[0027] The upper drilling assembly 300 and the lower drilling assembly 400 are provided to perform opposite drilling operations, thereby increasing the efficiency of the construction; the driving assembly sends the cut rock core 120 to the ground for centralized processing, thereby reducing the construction cost and increasing the safety factor.

[0028] In one embodiment, if Figure 3 As shown, it also includes a positioning rod 220, which is used to keep the upper drilling assembly 300 and the lower drilling assembly 400 coaxial.

[0029] Before construction work, a hole is drilled above the rock layer 100 into the tunnel 110, and the positioning rod 220 is inserted into the rock layer 100 through the hole. The upper drilling assembly 300 and the lower drilling assembly 400 are positioned according to the axis of the positioning rod 220 so that the upper drilling assembly 300 and the lower drilling assembly 400 remain coaxial.

[0030] The positioning rod 220 is provided to keep the upper drilling assembly 300 and the lower drilling assembly 400 coaxial, thereby reducing the error of the drilling operation.

[0031] In one embodiment, if Figure 4 As shown, the driving assembly includes a first driving unit 500 , which is used to drive the upper drilling assembly 300 to rotate. The first driving unit 500 is disposed on the upper support frame 200 .

[0032] The first driving unit 500 includes a first driving motor 510 , a first transmission belt 520 and a first rotating ring 530 .

[0033] The first drive motor 510 is connected to the first swivel 530 through the first transmission belt 520, and the rotation of the first drive motor 510 can drive the first swivel 530 to rotate; a spline connection is set between the first swivel 530 and the upper extension tube 310, so that the rotation of the first swivel 530 can drive the upper extension tube 310 to rotate, and the first swivel 530 and the upper extension tube 310 can slide axially.

[0034] In some embodiments, the first driving unit 500 includes a third driving motor (not shown in the drawings), a first gear (not shown in the drawings), and a first gear ring (not shown in the drawings).

[0035] The output shaft of the third driving motor is fixedly connected to the first gear, the first gear is meshed with the first gear ring, the first gear ring is spline-matched with the upper extension tube 310, and the upper extension tube 310 can slide axially.

[0036] In one embodiment, if Figure 4 As shown, the driving assembly includes a first telescopic rod body 540 , and the first telescopic rod body 540 can provide a downward feeding force for the upper drilling assembly 300 to cut the rock core 120 .

[0037] The first telescopic rod 540 is disposed on the upper support frame 200 and is in contact with the upper extension tube 310 .

[0038] When in use, the first telescopic rod 540 is extended to apply a downward feeding force to the upper extension tube 310, so that the upper extension tube 310 can continuously cut the rock and soil layer 100 downward, thereby increasing construction efficiency.

[0039] In one embodiment, if Figures 4 to 7 As shown, the lower drilling assembly 400 includes a lower extension tube 410 and a lower cutter 420, the lower extension tube 410 is capable of storing and fixing the core 120, and the lower cutter 420 is capable of cutting the rock layer 100; the lower extension tube 410 has a first end and a second end, the first end is provided with an internal thread, the second end is provided with an external thread, and the lower cutter 420 is threadedly connected to the lower extension tube 410; a snap-on rack 430 is provided on the outer wall of the lower extension tube 410, and the snap-on rack 430 is used to limit the lower extension tube 410; the number of the lower extension tubes 410 is at least one, and when the number of the lower extension tubes 410 is greater than one, the multiple lower extension tubes 410 are connected by threads.

[0040] A snap-fitting slider (not shown in the accompanying drawings) is provided, and the snap-fitting slider has a first mating position and a second mating position; when the snap-fitting slider is in the first mating position, the snap-fitting slider is engaged with the snap-fitting rack 430, and the snap-fitting slider is in contact with the lower support frame 210, and the snap-fitting slider can limit the displacement of the lower extension tube 410 and prevent the lower extension tube 410 from falling; when the snap-fitting slider is in the second mating position, the lower extension tube 410 can move downward or upward.

[0041] When the lower extension tube 410 needs to be threadedly connected with the lower cutting blade 420, the clamping slider is first placed in the first mating position, and then the lower extension tube 410 is threadedly connected with the lower cutting blade 420 to improve the stability and safety of the device.

[0042] In one embodiment, if Figures 1 to 6 As shown, the lower drilling assembly 400 is provided with a clamping wheel 450, and the clamping wheel 450 is used to fix the core 120; an inner groove 460 is provided on the inner wall of the lower extension tube 410, and a first slide 470 is provided on the inner groove 460. The direction in which the first slide 470 is arranged has an angle with the tangent of the inner wall of the lower extension tube 410, and the clamping wheel 450 and the first slide 470 are slidably matched; the first slide 470 is provided with a first extreme position and a second extreme position.

[0043] When the lower drilling assembly 400 rotates forward, the core 120 is cut, and the clamping wheel 450 is at the first extreme position of the first slide 470, and the clamping wheel 450 is located inside the inner groove 460; when the lower drilling assembly 400 rotates reversely or has a tendency to rotate reversely, the clamping wheel 450 moves to the second extreme position, and the clamping wheel 450 extends out of the inner groove 460, and the clamping wheel 450 has a clamping effect on the core 120.

[0044] Multiple groups of clamping wheels 450, inner grooves 460 and first slideways 470 can be evenly arranged on the inner wall of the lower extension tube 410, so that the core 120 is subjected to a greater and more uniform clamping force, so that the core 120 is better preserved.

[0045] In one embodiment, if Figure 3 to Figure 4 As shown, the driving assembly includes a second driving unit 600, which is used to drive the lower drilling assembly 400 to rotate and fix the core 120; the second driving unit 600 is arranged on the lower support frame 210, and the second driving unit 600 includes a second driving motor 610, a second transmission belt 620 and a second swivel 630.

[0046] The second drive motor 610 is connected to the second rotating ring 630 through the second transmission belt 620. The rotation of the second drive motor 610 can drive the second rotating ring 630 to rotate. The second rotating ring 630 is connected to the lower extension tube 410 through a spline connection, so that the rotation of the second rotating ring 630 can drive the lower extension tube 410 to rotate, and the lower extension tube 410 can slide axially.

[0047] The second driving motor 610 can make the lower extension tube 410 rotate forward or reverse. When the lower extension tube 410 rotates forward, the lower extension tube 410 can cut the rock core 120 . When the lower extension tube 410 reverses, the lower extension tube 410 can clamp the rock core 120 .

[0048] In one embodiment, the second driving unit 600 includes a fourth driving motor (not shown in the drawings), a second gear (not shown in the drawings), and a second gear ring (not shown in the drawings).

[0049] The output shaft of the fourth driving motor is fixedly connected to the second gear, the second gear is meshed with the second gear ring, the second gear ring is spline-matched with the lower extension tube 410, and the lower extension tube 410 can slide axially.

[0050] In one embodiment, if Figure 4 As shown, it includes a shielding ring 640, which is arranged above the second rotating ring 630 to prevent debris from entering the contact surface between the second transmission belt 620 and the second rotating ring 630, protect the contact surface between the second rotating ring 630 and the second transmission belt 620, and reduce wear of the device.

[0051] In one embodiment, if Figure 4 As shown, the driving assembly includes a second telescopic rod body 650 , which can provide an upward feeding force for the lower drilling assembly 400 to cut the rock core 120 , and can transport the rock core 120 to the outside of the rock layer 100 .

[0052] The second telescopic rod 650 is disposed on the lower support frame 210 , and the second telescopic rod 650 is disposed in contact with the lower extension tube 410 .

[0053] When in use, the second telescopic rod 650 transports the upper extension tube 310, the lower extension tube 410 and the rock core 120 to the outside of the rock layer 100. The rock core 120 stored in the upper extension tube 310 and the lower extension tube 410 can be used as rock samples for experimental observation.

[0054] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A geological drilling device, characterized in that: It includes: an upper drilling assembly for drilling and storing core; A lower drilling assembly for drilling, storing and securing the drilled core; The upper drilling assembly is coaxially arranged with the lower drilling assembly; A driving assembly, used to provide power to the upper drilling assembly and the lower drilling assembly, and to transport the core to the ground; The upper drilling assembly includes an upper extension tube and an upper cutter, wherein the upper extension tube is capable of storing cut cores, and the upper cutter is capable of cutting rock and soil layers; The upper extension tube is provided with an upper end portion and a lower end portion, the upper end portion is provided with an internal thread, the lower end portion is provided with an external thread, and the upper cutting tool is threadedly connected to the upper extension tube; The number of the upper extension tube is at least one. When the number of the upper extension tube is greater than one, the plurality of upper extension tubes are connected by threads.

2. The geological drilling device according to claim 1, characterized in that: It also includes a positioning rod, which is used to keep the upper drilling assembly and the lower drilling assembly coaxial.

3. The geological drilling device according to claim 1, characterized in that: The driving assembly comprises a first driving unit, and the first driving unit is used to drive the upper drilling assembly to rotate.

4. The geological drilling device according to claim 3, characterized in that: The driving assembly comprises a first telescopic rod body, and the first telescopic rod body can provide a downward feeding force for the upper drilling assembly to cut the rock core downward.

5. The geological drilling device according to claim 1, characterized in that: The lower drilling assembly includes a lower extension tube and a lower cutter, wherein the lower extension tube can store cut cores, and the lower cutter can cut rock and soil layers; The lower extension tube is provided with a first end and a second end, the first end is provided with an internal thread, the second end is provided with an external thread, and the lower cutting tool is threadedly connected to the lower extension tube; A clamping rack is provided on the outer wall of the lower extension tube, and the clamping rack is used to fix the lower extension tube; The number of the lower extension tube is at least one. When the number of the lower extension tube is greater than one, the lower extension tubes are connected to each other through threads.

6. The geological drilling device according to claim 5, characterized in that: The lower drilling assembly is provided with a clamping wheel, and the clamping wheel is used to fix the drilled core; An inner groove is provided on the inner wall of the lower extension tube, a first slideway is provided on the inner groove, the first slideway is provided in a direction that forms an angle with a tangent line of the inner wall of the lower extension tube, and the clamping wheel is slidably matched with the first slideway.

7. The geological drilling device according to claim 6, characterized in that: The driving assembly comprises a second driving unit, and the second driving unit is used for driving the lower drilling assembly to rotate and fix the core.

8. The geological drilling device according to claim 7, characterized in that: It also includes a blocking ring, which is used to prevent debris from entering the second driving unit.

9. The geological drilling device according to claim 8, characterized in that: The driving assembly comprises a second telescopic rod body, and the second telescopic rod body can provide an upward feeding force for the lower drilling assembly to cut the rock core, and can transport the rock core to the ground.

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