Drilling machine damping device for geotechnical engineering investigation

Abstract

The drilling machine damping device for geotechnical engineering investigation comprises a base, leveling mechanisms used for adjusting the levelness of the base are arranged at the four corners of the bottom of the base, a bottom plate is arranged at the top of the base, second connecting cylinders are fixed to the four corners of the top of the base, and circular plates are connected to the inner side walls of the four second connecting cylinders in a sliding mode. Second connecting rods are fixed to the tops of the four circular plates correspondingly, the top ends of the four second connecting rods penetrate through the tops of the four second connecting cylinders correspondingly, and the top ends of the four second connecting rods are fixed to the bottom of the bottom plate. Through the design of the damping mechanism, vibration generated in the drilling process of a drill bit can be buffered for the first time, then the interiors of the four air bags are inflated through the two inflation mechanisms, and the bottom plate has a trend of moving reversely in cooperation with four circular plates and four second connecting rods; and secondary buffering treatment can be conducted on generated vibration, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering investigation technology, and in particular to a drilling rig vibration reduction device for geotechnical engineering investigation. Background Technology

[0002] Geotechnical engineering is an important branch of civil engineering, mainly involving the engineering properties of soil and rock and their application in engineering construction. In the process of geotechnical engineering investigation, drilling rigs are important equipment for geological sampling and soil layer analysis. However, as the drill bit rubs against, cuts and impacts the strata, the drilling rig often generates large vibrations during operation. These vibrations can cause the drill bit to deviate, the sampling to be inaccurate, and may even cause equipment failure. Therefore, a vibration damping device for drilling rigs used in geotechnical engineering investigation is needed.

[0003] Traditional drilling rigs are usually operated by hand by workers and lack effective shock absorption devices. The vibrations generated during drilling directly affect the stability of the drill bit and cause it to deviate. Due to vibration and deviation, the accuracy of sampling is often affected. This may result in the obtained soil or rock samples not representing the true situation of the entire stratum, thus affecting subsequent experimental results and analysis. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a vibration damping device for drilling rigs used in geotechnical engineering exploration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vibration damping device for a drilling rig used in geotechnical engineering exploration includes a base. Leveling mechanisms for adjusting the base's horizontal position are located at each of the four corners of the base's bottom. A base plate is located on the top of the base. Second connecting cylinders are fixed at each of the four corners of the base's top. Circular plates are slidably connected to the inner walls of each of the four second connecting cylinders. Second connecting rods are fixed to the tops of each of the four circular plates. The tips of the four second connecting rods pass through the tops of the four second connecting cylinders and are fixed to the bottom of the base plate. Airbags are located on the inner walls of each of the four second connecting cylinders, and are positioned below the four circular plates. Inflation mechanisms for inflating two of the airbags are located at both ends of the base's bottom. A top plate is located on the top of the base plate. A mechanism for adjusting the top plate is provided on the top of the base plate. The shock-absorbing mechanism includes a through hole at the center of the top of the base, bottom plate, and top plate. A connecting plate is installed on the top of the top plate, and a drill bit is rotatably connected to the center of the bottom of the connecting plate. A first motor is fixed to the top of the connecting plate, and the output shaft of the first motor is fixed to the drill bit. Lifting mechanisms for raising and lowering the connecting plate are installed at both ends of the top of the top plate. An adsorption mechanism for adsorbing dust is installed at the bottom of the base. During use, the shock-absorbing mechanism can initially buffer the vibration generated by the drill bit during drilling. Then, by inflating the four air bladders through two inflation mechanisms, and cooperating with four circular plates and four second connecting rods, the bottom plate has a tendency to move in the opposite direction, which can further buffer the vibration generated, thus improving the practicality of the device.

[0007] Preferably, the lifting mechanism includes a connecting seat, which is fixed to one end of the top plate. A sliding groove is provided on the side wall of the top plate, and a lead screw is provided inside the sliding groove. A lead screw nut is slidably connected to the side wall of the sliding groove. The lead screw nut is sleeved on the side wall of the lead screw, and the lead screw nut and the lead screw are adapted to each other. The lead screw nut is fixed to one end of the connecting plate. A second motor is fixed to the top of the connecting seat, and the output shaft of the second motor is fixed to the lead screw, driving the first motor to rotate the drill bit. As the connecting plate continues to descend, the drill bit drills deep into the rock and soil, thus allowing precise control of the depth to which the drill bit enters the rock and soil.

[0008] Preferably, the shock absorption mechanism includes four damping telescopic rods, which are respectively fixed at the four corners of the top of the base plate, and the telescopic ends of the four damping telescopic rods are all fixed to the bottom of the top plate. Damping springs are sleeved on the side walls of each of the four damping telescopic rods. The inflation mechanism includes an L-shaped plate, which is fixed to one side of the bottom of the base. A first connecting cylinder is fixed to the bottom of the L-shaped plate. A piston is slidably connected to the inner side wall of the first connecting cylinder. A first connecting rod is fixed to the top of the piston, and the top end of the first connecting rod passes through the top of the first connecting cylinder. A support plate is fixed to the top end of the first connecting rod, and the support plate is fixed to the base plate. Two flexible hoses are inserted through the outer side wall of the first connecting cylinder near the bottom, and one end of each hose is connected to one of the two air bladders. When the drill bit rotates into the deep soil and rock... When the drill bit vibrates due to friction, cutting, and impact with the formation, the four damping telescopic rods and four damping springs provide initial buffering. As the drill bit continues to penetrate deeper, the top plate gradually moves downwards towards the bottom plate, which in turn causes the bottom plate to gradually move downwards towards the base. At this point, under the action of the two support plates, the two first connecting rods drive the two pistons to move downwards along the inner walls of the two first connecting cylinders, respectively. This allows the air inside the two first connecting cylinders to be injected into the four air bladders through four hoses, causing the four air bladders to expand and push the four circular plates upwards along the inner walls of the four second connecting cylinders. This, combined with the four second connecting rods, gives the bottom plate an upward tendency, thus providing secondary buffering of the vibration and further improving the stability of the device.

[0009] Preferably, the adsorption mechanism includes an annular seat, which is fixed to the middle of the bottom of the base. The annular seat has a cavity structure, and multiple round holes are evenly spaced on the inner sidewall of the annular seat. A vacuum cleaner is fixed to one end of the bottom of the base, and the dust inlet of the vacuum cleaner is connected to the annular seat. When the vacuum cleaner is working, it will generate a large suction force, which will make the inside of the annular seat a negative pressure environment. When the drill bit comes into contact with the rock and soil, the generated gravel and dust will be sucked into the annular seat through the multiple round holes, and then enter the vacuum cleaner through the dust inlet pipe to be collected, thus avoiding environmental pollution.

[0010] Preferably, the leveling mechanism includes four threaded rods, which are respectively fixed at the four corners of the bottom of the base. Each of the four threaded rods has a threaded sleeve fitted on its side wall, and the four threaded sleeves are adapted to the four threaded rods. A spirit level is fixed on both adjacent sides of the top of the base. By rotating the four threaded sleeves in conjunction with the four threaded rods, the height of the four corners of the base can be adjusted. When the bubbles in the bubble tubes of the two spirit levels are in the middle position, the base is in a horizontal state, and the drill bit is in a vertical state, ensuring that the drill bit will not deviate.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. During use, the leveling mechanism of this device ensures that the base is always in a horizontal position, thereby keeping the drill bit vertical, reducing the deviation caused by tilting during drilling, and improving the accuracy of drilling.

[0013] 2. Through the design of the shock absorption mechanism, the vibration generated by the drill bit during drilling can be initially buffered. Then, through two inflation mechanisms, the four air bladders are inflated. With the help of four circular plates and four second connecting rods, the base plate has a tendency to move in the opposite direction, which can provide secondary buffering of the generated vibration, thus improving the practicality of the device.

[0014] 3. Through the design of the adsorption mechanism, it can effectively remove the gravel and dust generated during drilling, avoid environmental pollution, and keep the exploration area clean. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a drilling rig vibration damping device for geotechnical engineering exploration proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom of the base of a drilling rig vibration damping device for geotechnical engineering exploration proposed in this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the first and second connecting cylinders of a drilling rig vibration damping device for geotechnical engineering exploration proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the vibration damping mechanism of a drilling rig vibration damping device for geotechnical engineering exploration proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the lifting mechanism of a drilling rig vibration damping device for geotechnical engineering exploration proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Base plate; 3. Top plate; 4. Through hole; 5. Connecting seat; 6. Connecting plate; 7. First motor; 8. Drill bit; 9. Threaded sleeve; 10. Threaded rod; 11. L-shaped plate; 12. First connecting cylinder; 13. Second connecting cylinder; 14. Ring seat; 15. Round hole; 16. Vacuum cleaner; 17. Piston; 18. First connecting rod; 19. Support plate; 20. Hose; 21. Airbag; 22. Circular plate; 23. Second connecting rod; 24. Damping telescopic rod; 25. Damping spring; 26. Slide groove; 27. Lead screw; 28. Lead screw nut; 29. ​​Second motor; 30. Level. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1 - Figure 5 A vibration damping device for a drilling rig used in geotechnical engineering exploration includes a base 1. Leveling mechanisms for adjusting the level of the base 1 are provided at each of the four corners of the base 1. A base plate 2 is provided on the top of the base 1. Second connecting cylinders 13 are fixed at each of the four corners of the top of the base 1. Circular plates 22 are slidably connected to the inner walls of the four second connecting cylinders 13. Second connecting rods 23 are fixed to the tops of the four circular plates 22, with their tips penetrating the tops of the four second connecting cylinders 13 and fixed to the bottom of the base plate 2. Airbags 21 are provided on the inner walls of the four second connecting cylinders 13, and the four airbags 21 are located below the four circular plates 22. Inflation mechanisms for inflating two of the airbags 21 are provided at both ends of the bottom of the base 1. A top plate 3 is provided on the top of the base plate 2, with a mechanism for adjusting the top... The shock-absorbing mechanism of plate 3 has through holes 4 in the middle of the top of base 1, bottom plate 2 and top plate 3. A connecting plate 6 is set on the top of top plate 3. A drill bit 8 is rotatably connected to the middle of the bottom of connecting plate 6. A first motor 7 is fixed on the top of connecting plate 6, and the output shaft of the first motor 7 is fixed to the drill bit 8. Lifting mechanisms for raising and lowering connecting plate 6 are set at both ends of the top of top plate 3. An adsorption mechanism for adsorbing dust is set at the bottom of base 1. In the process of use, the shock-absorbing mechanism can initially buffer the vibration generated by drill bit 8 during drilling. Then, the four air bags 21 are inflated by two inflation mechanisms. With the help of four circular plates 22 and four second connecting rods 23, the bottom plate 2 has a tendency to move in the opposite direction, which can provide secondary buffering of the generated vibration, thus improving the practicality of the device.

[0023] Furthermore, the lifting mechanism includes a connecting seat 5, which is fixed to one end of the top plate 3. A sliding groove 26 is provided on the side wall of the top plate 3, and a lead screw 27 is provided inside the sliding groove 26. A lead screw nut 28 is slidably connected to the side wall of the sliding groove 26. The lead screw nut 28 is sleeved on the side wall of the lead screw 27, and the lead screw nut 28 and the lead screw 27 are compatible. The lead screw nut 28 is fixed to one end of the connecting plate 6. A second motor 29 is fixed to the top of the connecting seat 5, and the output shaft of the second motor 29 is fixed to the lead screw 27, driving the first motor 7 to rotate the drill bit 8. As the connecting plate 6 continues to descend, the drill bit 8 drills deep into the rock and soil, thus allowing precise control of the depth to which the drill bit 8 enters the rock and soil.

[0024] Furthermore, the shock absorption mechanism includes four damping telescopic rods 24, which are fixed to the four corners of the top of the base plate 2, and the telescopic ends of the four damping telescopic rods 24 are fixed to the bottom of the top plate 3. Damping springs 25 are fitted onto the side walls of each of the four damping telescopic rods 24. The inflation mechanism includes an L-shaped plate 11, which is fixed to one side of the bottom of the base 1. A first connecting cylinder 12 is fixed to the bottom of the L-shaped plate 11. A piston 17 is slidably connected to the inner side wall of the first connecting cylinder 12. A first connecting rod 18 is fixed to the top of the piston 17, and the top end of the first connecting rod 18 passes through the top of the first connecting cylinder 12. A support plate 19 is fixed to the top end of the first connecting rod 18, and the support plate 19 is fixed to the base plate 2. Two flexible hoses 20 are installed near the bottom of the outer side wall of the first connecting cylinder 12, and one end of each hose 20 is connected to one of the two airbags 21. When the drill bit 8 rotates into the deep soil and rock... When the drill bit 8 vibrates due to friction, cutting, and impact with the formation, the four damping telescopic rods 24 and four damping springs 25 can initially buffer the vibration. As the drill bit 8 continues to penetrate deeper, the top plate 3 gradually moves downwards towards the bottom plate 2, which in turn causes the bottom plate 2 to gradually move downwards towards the base 1. At this time, under the action of the two support plates 19, the two pistons 17 are driven by the two first connecting rods 18 to move downwards along the inner walls of the two first connecting cylinders 12, respectively. The air inside the two first connecting cylinders 12 is filled into the four air bladders 21 through the four hoses 20, causing the four air bladders 21 to expand and push the four circular plates 22 upwards along the inner walls of the four second connecting cylinders 13, respectively. With the help of the four second connecting rods 23, the bottom plate 2 has an upward tendency, which can provide secondary buffering of the vibration and further improve the stability of the device.

[0025] Furthermore, the adsorption mechanism includes an annular seat 14, which is fixed to the middle of the bottom of the base 1. The annular seat 14 has a cavity structure, and multiple round holes 15 are evenly spaced on the inner side wall of the annular seat 14. A vacuum cleaner 16 is fixed to one end of the bottom of the base 1, and the dust inlet of the vacuum cleaner 16 is connected to the annular seat 14. When the vacuum cleaner 16 is working, it will generate a large suction force, which will make the inside of the annular seat 14 a negative pressure environment. When the drill bit 8 comes into contact with the rock and soil, the generated gravel and dust will be sucked into the annular seat 14 through the multiple round holes 15, and then collected inside the vacuum cleaner 16 through the dust inlet pipe, thus avoiding environmental pollution.

[0026] Furthermore, the leveling mechanism includes four threaded rods 10, which are fixed at the four corners of the bottom of the base 1. Each of the four threaded rods 10 has a threaded sleeve 9 fitted on its side wall, and the four threaded sleeves 9 are adapted to each of the four threaded rods 10. A spirit level 30 is fixed on both adjacent sides of the top of the base 1. By rotating the four threaded sleeves 9 in conjunction with the four threaded rods 10, the height of the four corners of the base 1 can be adjusted. When the bubbles in the bubble tubes of the two spirit levels 30 are in the middle position, the base 1 is in a horizontal state, and the drill bit 8 is in a vertical state, ensuring that the drill bit 8 will not deviate.

[0027] Working Principle: Since geotechnical engineering investigations are typically conducted in the field, where the ground is often uneven, the drill bit 8 must remain vertical to ensure sampling depth. When the base 1 is horizontal, the drill bit 8 is vertical. Therefore, the base 1 needs to be leveled before use. Leveling is achieved by rotating the four threaded sleeves 9 in conjunction with the four threaded rods 10, adjusting the height of the four corners of the base 1. When the air bubbles in the two level gauges 30 are in the middle position, the base 1 is horizontal. During drilling, two second motors are simultaneously activated. The power switch of motor 29 drives two second motors 29 to rotate two lead screws 27 simultaneously. These, in conjunction with two lead screw nuts 28, move the connecting plate 6 downwards, causing the drill bit 8 to pass through the three through holes 4 and the bottom of the annular seat 14, contacting the soil and rock. Simultaneously, the power switch of the first motor 7 is turned on, driving it to rotate the drill bit 8. As the connecting plate 6 continues to descend, the drill bit 8 drills deep into the soil and rock. This allows for precise control of the drill bit 8's depth, ensuring it doesn't deviate during drilling and improving the accuracy of subsequent experimental results. While drilling, the power switch of the vacuum cleaner 16 is turned on to clean the air. When the dust collector 16 is working, it generates a large suction force, creating a negative pressure environment inside the annular seat 14. When the drill bit 8 comes into contact with the rock and soil, the resulting gravel and dust are sucked into the annular seat 14 through multiple round holes 15. They are then collected inside the dust collector 16 through the dust inlet pipe, preventing environmental pollution. When the drill bit 8 rotates deep into the rock and soil, the friction, cutting, and impact between the drill bit 8 and the strata generate vibrations. The four damping telescopic rods 24 and four damping springs 25 provide initial buffering of these vibrations. As the drill bit 8 continues to penetrate deeper, the top plate 3 gradually moves downwards towards the bottom plate 2, thereby causing the bottom plate 2 to... As plate 2 gradually moves downwards towards base 1, under the action of the two support plates 19, the two pistons 17 are driven by the two first connecting rods 18 to move downwards along the inner walls of the two first connecting cylinders 12 respectively. The air inside the two first connecting cylinders 12 is filled into the four airbags 21 through the four hoses 20, causing the four airbags 21 to expand and push the four circular plates 22 to move upwards along the inner walls of the four second connecting cylinders 13 respectively. With the help of the four second connecting rods 23, the base plate 2 has an upward tendency, which can provide secondary buffering for the generated vibration and further improve the stability of the device.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration damping device for a drilling rig used in geotechnical engineering exploration, comprising a base (1), characterized in that, The base (1) is equipped with a leveling mechanism at each of the four corners of its bottom. A base plate (2) is provided on the top of the base (1). Second connecting cylinders (13) are fixed at each of the four corners of the top of the base (1). Circular plates (22) are slidably connected to the inner walls of the four second connecting cylinders (13). Second connecting rods (23) are fixed to the tops of the four circular plates (22). The tops of the four second connecting rods (23) pass through the tops of the four second connecting cylinders (13) respectively, and the tops of the four second connecting rods (23) are fixed to the bottom of the base plate (2). Airbags (21) are provided on the inner walls of the four second connecting cylinders (13), and the four airbags (21) are located below the four circular plates (22). The base (1) Both ends of the bottom are provided with an inflation mechanism for inflating the two airbags (21). The top of the base plate (2) is provided with a top plate (3). The top of the base plate (2) is provided with a shock-absorbing mechanism for shock absorption of the top plate (3). The middle of the top of the base (1), the base plate (2) and the top plate (3) are provided with through holes (4). The top of the top plate (3) is provided with a connecting plate (6). The middle of the bottom of the connecting plate (6) is rotatably connected with a drill bit (8). The top of the connecting plate (6) is fixed with a first motor (7), and the output shaft of the first motor (7) is fixed with the drill bit (8). Both ends of the top of the top plate (3) are provided with a lifting mechanism for lifting the connecting plate (6). The bottom of the base (1) is provided with an adsorption mechanism for adsorbing dust.

2. The vibration damping device for drilling rigs used in geotechnical engineering investigation according to claim 1, characterized in that, The lifting mechanism includes a connecting seat (5), which is fixed to one end of the top plate (3). The top plate (3) has a sliding groove (26) on its side wall. A lead screw (27) is provided inside the sliding groove (26). A lead screw nut (28) is slidably connected to the side wall of the sliding groove (26). The lead screw nut (28) is sleeved on the side wall of the lead screw (27), and the lead screw nut (28) and the lead screw (27) are compatible. The lead screw nut (28) is fixed to one end of the connecting plate (6). A second motor (29) is fixed to the top of the connecting seat (5), and the output shaft of the second motor (29) is fixed to the lead screw (27).

3. The vibration damping device for drilling rigs used in geotechnical engineering investigation according to claim 1, characterized in that, The shock absorption mechanism includes four damping telescopic rods (24), which are respectively fixed at the four corners of the top of the base plate (2), and the telescopic ends of the four damping telescopic rods (24) are fixed to the bottom of the top plate (3). The side walls of the four damping telescopic rods (24) are all fitted with damping springs (25).

4. The vibration damping device for drilling rigs used in geotechnical engineering investigation according to claim 1, characterized in that, The inflation mechanism includes an L-shaped plate (11), which is fixed to one side of the bottom of the base (1). A first connecting cylinder (12) is fixed inside the bottom of the L-shaped plate (11). A piston (17) is slidably connected to the inner side wall of the first connecting cylinder (12). A first connecting rod (18) is fixed to the top of the piston (17), and the top end of the first connecting rod (18) passes through the top of the first connecting cylinder (12). A support plate (19) is fixed to the top end of the first connecting rod (18), and the support plate (19) is fixed to the bottom plate (2). Two hoses (20) are provided through the outer side wall of the first connecting cylinder (12) near the bottom, and one end of each hose (20) is connected to one of the two airbags (21).

5. The vibration damping device for drilling rigs used in geotechnical engineering investigation according to claim 1, characterized in that, The adsorption mechanism includes an annular seat (14), which is fixed at the middle of the bottom of the base (1). The annular seat (14) has a cavity structure. Multiple round holes (15) are evenly spaced on the inner side wall of the annular seat (14). A vacuum cleaner (16) is fixed at one end of the bottom of the base (1), and the dust inlet of the vacuum cleaner (16) is connected to the annular seat (14).

6. The vibration damping device for drilling rigs used in geotechnical engineering investigation according to claim 1, characterized in that, The leveling mechanism includes four threaded rods (10), which are fixed at the four corners of the bottom of the base (1). Each of the four threaded rods (10) has a threaded sleeve (9) fitted on its side wall, and the four threaded sleeves (9) are adapted to each of the four threaded rods (10). A level (30) is fixed on each of the adjacent sides of the top of the base (1).

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