Drilling coring device for improving coal field geology

By designing a drilling core extraction device including a skateboard and hollow rod, lubricating oil is intermittently pumped out, solving the problem of high friction and severe wear during high-speed rotation of the core drill, improving drilling efficiency and avoiding waste of lubricating oil.

CN222797474UActive Publication Date: 2025-04-25LANGFANG INTEGRATED NATURAL RESOURCES SURVEY CENTER CHINA GEOLOGICAL SURVEY
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Patent Information

Application Number
CN202421833903.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2025-04-25
Estimated Expiration
2034-07-31

AI Technical Summary

Technical Problem

In the existing drilling core extraction device, during the high-speed rotation of the core drill, the friction between the surface and the contact surface of the underground geotechnical layer is relatively large, resulting in the surface of the core drill being easily worn and affecting the drilling efficiency.

Method used

A core device including a mounting base, a drive motor, a rotary rod, a core drill, an oil groove, a sealing ring, an oil outlet hole, a slide plate, a hollow rod, a piston rod, an oil outlet hose, an oil storage box and an oil inlet hose are designed. Through the reciprocating movement of the slide plate and the hollow rod, lubricating oil is pumped intermittently from the oil storage box, and lubricating oil is pumped out on the core drill and the surface of the geotechnical layer through the oil outlet hole, reducing friction and improving drilling efficiency.

Benefits of technology

The intermittently pumped lubricant reduces the friction between the core drill and the contact surface of the geotechnical layer, reduces the wear of the core drill surface, improves drilling efficiency, and avoids the waste of lubricant.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of coring devices, in particular to a drilling coring device for improving coal field geology, which comprises a mounting seat, a driving motor is fixedly mounted on the upper surface of the mounting seat, a rotating rod is fixedly mounted on an output shaft of the driving motor, and a coring drill is fixedly mounted on the rotating rod; the rotating rod is sleeved with a sliding plate in a threaded mode, mounting openings are symmetrically formed in the surface of the sliding plate, hollow rods are vertically and fixedly mounted in the mounting openings, piston rods are inserted into the hollow rods, the top ends of the two piston rods are fixedly connected with the lower surface of a mounting base, and a mounting plate is fixedly mounted on the surface of the mounting base; and an oil storage box is fixedly mounted on the lower surface of the mounting plate. In the drilling process of the coring drill, lubricating oil in the oil storage box can intermittently flow out from the multiple oil outlets, the lubricating effect can be achieved, the friction force between the contact faces of the coring drill and a rock-soil layer is reduced, abrasion to the surface of the coring drill is reduced, and the drilling efficiency of the coring drill is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of coring devices, in particular to a coring device for improving coalfield geological drilling. Background Art

[0002] Most coalfields are in the form of basins, so they are also called coal basins. When conducting geological drilling and engineering surveys in coalfields, drilling coring devices are often used to coring the rock and soil layers to obtain samples of the rock and soil layers for more accurate subsequent surveys.

[0003] During the high-speed rotation of the core drill in the existing coring drilling device, the friction between the surface of the core drill and the contact surface of the underground rock and soil layer is relatively large, and the surface of the core drill is prone to wear, which also affects the drilling efficiency of the core drill. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: during the high-speed rotation of the core drill in the existing drilling and coring device, the friction between the surface of the core drill and the contact surface of the underground rock and soil layer is relatively large, the surface of the core drill is prone to wear, and the drilling efficiency of the core drill is also affected. A coalfield geological drilling and coring device is proposed to improve the performance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for improving coalfield geological drilling and coring, comprising a mounting seat, a driving motor is fixedly mounted on the upper surface of the mounting seat, a rotating rod is fixedly mounted on the bottom end of the output shaft of the driving motor, a coring drill is fixedly mounted on the bottom end of the rotating rod, an oil groove is vertically opened on the upper surface of the coring drill, a sealing ring is rotatably sleeved at the bottom end of the rotating rod, an outer ring wall of the sealing ring is in sealing and sliding contact with a groove wall of the oil groove, and a plurality of oil outlet holes connected to the oil groove are opened on the surface of the coring drill;

[0007] A reciprocating thread is provided on the surface of the rotating rod, and a slide is threadedly sleeved on it. A mounting opening is symmetrically provided on the surface of the slide. A hollow rod with a closed bottom end is vertically fixedly installed in the mounting opening. A piston rod is vertically slidably and sealably inserted in the hollow rod. The top ends of the two piston rods are fixedly connected to the lower surface of the mounting seat. An oil outlet hose is fixedly installed on the bottom end of the hollow rod. The bottom end of the oil outlet hose passes through a sealing ring and extends into the oil tank. A mounting plate is fixedly installed on the surface of the mounting seat. An oil storage box is fixedly installed on the lower surface of the mounting plate. The hollow rod is connected to the oil storage box through an oil inlet hose. Both the oil outlet hose and the oil inlet hose are provided with a one-way valve.

[0008] Preferably, the conducting direction of the one-way valve in the oil outlet hose is from the inside of the hollow rod to the oil tank, and the conducting direction of the one-way valve in the oil inlet hose is from the inside of the oil storage box to the inside of the hollow rod.

[0009] Preferably, the surface of the core drill is symmetrically and vertically provided with slide grooves, and sliders are slidably arranged in the two slide grooves. Connecting rods are fixedly installed on the left and right side walls of the sliders, and a baffle is fixedly installed between every two connecting rods. The two baffles respectively cover multiple oil outlet holes located on the same longitudinal horizontal line.

[0010] Preferably, a spherical groove is formed at the bottom end of the baffle, and a rolling ball is embedded in the spherical groove for rolling.

[0011] Preferably, both the left and right side walls of the mounting seat are provided with a placement opening, and a handle is horizontally fixedly installed in the placement opening.

[0012] Preferably, the fixing sleeve on the grip rod is provided with an anti-slip sleeve, and the material of the anti-slip sleeve is rubber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the core drill is drilling, the lubricating oil in the oil storage box will intermittently flow out from multiple oil outlets and act on the surface of the core drill and the rock and soil layer, which can play a lubricating effect, reduce the friction between the contact surface of the core drill and the rock and soil layer, reduce the wear of the core drill surface, and improve the drilling efficiency of the core drill;

[0015] 2. Through the design of two baffles, lubricating oil will only flow out from the oil outlet holes located in the rock and soil layer, while the oil outlet holes not in the rock and soil layer will be in a closed state, avoiding the waste of lubricating oil flowing out of the oil outlet holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of a device for improving coalfield geological drilling and coring proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a partial three-dimensional cross-sectional structure of a core drill in a device for improving coalfield geological drilling and coring proposed by the utility model;

[0018] Figure 3 This is a partial three-dimensional structural schematic diagram of a baffle in a device for improving coalfield geological drilling and coring proposed by the utility model;

[0019] Figure 4 for Figure 1 A magnified view of the structure at center;

[0020] Figure 5 for Figure 2 A magnified view of the structure at B in the middle;

[0021] Figure 6 for Figure 3Enlarged view of the structure at point C in the middle.

[0022] In the figure: 1 mounting seat, 2 driving motor, 3 rotating rod, 4 core drill, 5 oil groove, 6 sealing ring, 7 oil outlet hole, 8 slide plate, 9 hollow rod, 10 piston rod, 11 oil outlet hose, 12 oil storage box, 13 oil inlet hose, 14 slide groove, 15 slider, 16 connecting rod, 17 baffle, 18 rolling ball, 19 grip rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0024] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0025] Reference Figure 1-Figure 6 , a device for improving coalfield geological drilling and coring, comprising a mounting seat 1, a driving motor 2 is fixedly mounted on the upper surface of the mounting seat 1, a rotating rod 3 is fixedly mounted on the bottom end of the output shaft of the driving motor 2, a coring drill 4 is fixedly mounted on the bottom end of the rotating rod 3, an oil groove 5 is vertically opened on the upper surface of the coring drill 4, a sealing ring 6 is rotatably sleeved at the bottom end of the rotating rod 3, an outer ring wall of the sealing ring 6 is in sealing and sliding contact with the groove wall of the oil groove 5, a plurality of oil outlet holes 7 connected to the oil groove 5 are opened on the surface of the coring drill 4, and the oil outlet holes 7 are only for liquid to flow out of the oil groove 5;

[0026] A reciprocating thread is provided on the surface of the rotating rod 3, and a slide plate 8 is threadedly sleeved. A mounting opening is symmetrically provided on the surface of the slide plate 8. A hollow rod 9 with a closed bottom end is vertically fixedly installed in the mounting opening. A piston rod 10 is vertically slidably sealed and inserted in the hollow rod 9. The top ends of the two piston rods 10 are fixedly connected to the lower surface of the mounting seat 1. An oil outlet hose 11 is fixedly installed at the bottom end of the hollow rod 9. The bottom end of the oil outlet hose 11 passes through the sealing ring 6 and extends into the oil tank 5. A mounting plate is fixedly installed on the surface of the mounting seat 1, and an oil storage box 12 is fixedly installed on the lower surface of the mounting plate. The hollow rod 9 is connected to the oil storage box 12 through an oil inlet hose 13. Both the oil outlet hose 11 and the oil inlet hose 13 are provided with a one-way valve. The conducting direction of the one-way valve in the oil outlet hose 11 is from the hollow rod 9 to the oil tank 5, and the conducting direction of the one-way valve in the oil inlet hose 13 is from the oil storage box 12 to the hollow rod 9.

[0027] Start the drive motor 2. When the output shaft of the drive motor 2 rotates at a high speed with the rotating rod 3 and the core drill 4, the slide plate 8 threadedly sleeved on the rotating rod 3 will carry the two hollow rods 9 to move back and forth vertically. Since the positions of the two piston rods 10 will not change, the volume inside the hollow rod 9 will continue to change when the hollow rod 9 moves back and forth vertically. When the volume inside the hollow rod 9 increases, the pressure decreases, and the lubricating oil in the oil storage box 12 will intermittently enter from the two oil inlet hoses 13. The lubricating oil in the hollow rod 9 will enter the oil tank 5 from the oil outlet hose 11, and then as the coring drill 4 rotates, the lubricating oil in the oil tank 5 will flow out from the multiple oil outlet holes 7 under the action of centrifugal force, and act on the surface of the coring drill 4 and the rock and soil layer, which can achieve a lubricating effect, reduce the friction between the contact surface of the coring drill 4 and the rock and soil layer, reduce the wear on the surface of the coring drill 4, and improve the drilling efficiency of the coring drill 4.

[0028] The surface of the core drill 4 is symmetrically and vertically provided with slide grooves 14, and slide blocks 15 are slidably arranged in the two slide grooves 14, and connecting rods 16 are fixedly installed on the left and right side walls of the slide blocks 15, and a baffle plate 17 is fixedly installed between every two connecting rods 16, and the two baffle plates 17 respectively cover a plurality of oil outlet holes 7 located on the same longitudinal horizontal line;

[0029] In the initial state, that is, when drilling has not yet begun, the two baffles 17 will cover all the oil outlet holes 7, and when drilling, the bottom ends of the two baffles 17 will contact the ground, and as the coring drill 4 moves downward, the two baffles 17 will gradually move upward, so that the oil outlet holes 7 located in the rock and soil layer are no longer covered by the two baffles 17, so that the lubricating oil in the oil tank 5 will only flow out from the oil outlet holes 7 located in the rock and soil layer, and the oil outlet holes 7 not in the rock and soil layer will be in a closed state, avoiding the waste of lubricating oil flowing out of the oil outlet holes 7 that are not in the rock and soil layer.

[0030] A spherical groove is formed at the bottom of the baffle 17, and a rolling ball 18 is rotatably embedded in the spherical groove. The rolling ball 18 can reduce the friction between the contact surface of the baffle 17 and the ground.

[0031] The left and right side walls of the mounting seat 1 are both provided with placement openings, in which a grip rod 19 is horizontally fixedly installed, and an anti-slip sleeve is fixedly provided on the grip rod 19, and the material of the anti-slip sleeve is rubber;

[0032] When drilling, the coring drill 4 can be pressed against the ground to be cored by holding the two gripping rods 19 , and the anti-slip sleeve made of rubber material can increase the friction between the contact surface of the palm and the gripping rod 19 .

[0033] In the present invention, the drive motor 2 is started, and when the output shaft of the drive motor 2 rotates at a high speed with the rotating rod 3 and the core drill 4, the slide plate 8 threadedly sleeved on the rotating rod 3 will carry the two hollow rods 9 to move back and forth vertically. Since the positions of the two piston rods 10 will not change, when the hollow rods 9 move back and forth vertically, the volume inside the hollow rods 9 will continue to change. When the volume inside the hollow rods 9 increases, the pressure decreases, and the lubricating oil in the oil storage box 12 will intermittently flow out from the two oil inlet hoses. 13 enters the two hollow rods 9, and when the volume in the hollow rods 9 becomes smaller, the pressure increases, and the lubricating oil in the hollow rods 9 will enter the oil tank 5 from the oil outlet hose 11, and then as the coring drill 4 rotates, the lubricating oil in the oil tank 5 will flow out from the multiple oil outlet holes 7 under the action of centrifugal force, and act on the surface of the coring drill 4 and the rock and soil layer, which can have a lubricating effect, reduce the friction between the contact surface of the coring drill 4 and the rock and soil layer, reduce the wear on the surface of the coring drill 4, and improve the drilling efficiency of the coring drill 4.

[0034] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for improving coalfield geological drilling and coring, comprising a mounting seat (1), characterized in that: A driving motor (2) is fixedly mounted on the upper surface of the mounting seat (1); a rotating rod (3) is fixedly mounted on the bottom end of the output shaft of the driving motor (2); a coring drill (4) is fixedly mounted on the bottom end of the rotating rod (3); an oil groove (5) is vertically provided on the upper surface of the coring drill (4); a sealing ring (6) is rotatably sleeved at the bottom end of the rotating rod (3); an outer ring wall of the sealing ring (6) is in sealing and sliding contact with a groove wall of the oil groove (5); and a plurality of oil outlet holes (7) connected to the oil groove (5) are provided on the surface of the coring drill (4); The surface of the rotating rod (3) is provided with a reciprocating thread, and a slide plate (8) is threadedly sleeved thereon. The surface of the slide plate (8) is symmetrically provided with a mounting opening. A hollow rod (9) with a closed bottom end is vertically fixedly installed in the mounting opening. A piston rod (10) is vertically slidably sealed and inserted in the hollow rod (9). The top ends of the two piston rods (10) are fixedly connected to the lower surface of the mounting seat (1). An oil outlet hose (11) is fixedly installed at the bottom end of the hollow rod (9). The bottom end of the oil outlet hose (11) passes through a sealing ring (6) and extends into the oil tank (5). A mounting plate is fixedly installed on the surface of the mounting seat (1). An oil storage box (12) is fixedly installed on the lower surface of the mounting plate. The hollow rod (9) is connected to the oil storage box (12) through an oil inlet hose (13). Both the oil outlet hose (11) and the oil inlet hose (13) are provided with a one-way valve.

2. A device for improving coalfield geological drilling and coring according to claim 1, characterized in that: The conducting direction of the one-way valve in the oil outlet hose (11) is from the inside of the hollow rod (9) to the oil tank (5), and the conducting direction of the one-way valve in the oil inlet hose (13) is from the inside of the oil storage box (12) to the inside of the hollow rod (9).

3. The device for improving coalfield geological drilling and coring according to claim 1, characterized in that: The surface of the core drill (4) is symmetrically and vertically provided with slide grooves (14), and two slide grooves (14) are slidably provided with sliders (15), and the left and right side walls of the sliders (15) are fixedly installed with connecting rods (16), and a baffle (17) is fixedly installed between every two connecting rods (16), and the two baffles (17) respectively cover a plurality of oil outlet holes (7) located on the same longitudinal horizontal line.

4. A device for improving coalfield geological drilling and coring according to claim 3, characterized in that: A spherical groove is formed at the bottom end of the baffle (17), and a rolling ball (18) is rotatably embedded in the spherical groove.

5. The device for improving coalfield geological drilling and coring according to claim 1, characterized in that: The left and right side walls of the mounting seat (1) are both provided with a placement opening, and a gripping rod (19) is horizontally fixedly installed in the placement opening.

6. The device for improving coalfield geological drilling and coring according to claim 5, characterized in that: The fixing sleeve on the grip rod (19) is provided with an anti-slip sleeve, and the material of the anti-slip sleeve is rubber.