Air filling underwater damping mechanism and construction method thereof

Abstract

The invention discloses an air filling underwater shock absorption mechanism and a construction method thereof, and relates to the technical field of underwater blasting shock absorption, the air filling underwater shock absorption mechanism comprises a barrel, an air filling device and a shock absorption device, the temporary sealing element is arranged on the outer surface of the drainage hole in a sealing manner; one end of the gas input mechanism is hermetically communicated with the top of the barrel, and the other end is communicated with the high-pressure gas pump through a gas pipe; the gas input mechanism is used for inputting air into the cylinder body, and when the air pressure in the cylinder body reaches the preset air pressure, the air in the cylinder body can jack the temporary sealing piece open and discharge water in the cylinder body; the one-way valve is arranged at one end of the gas input mechanism. After the high-pressure gas enters the cylinder, on one hand, the filler of the cylinder can be replaced by air from water, and on the other hand, the high-pressure air in the cylinder can be used as a natural sealing element, so that external water is prevented from flowing back into the cylinder from the drainage hole. Compared with the prior art, the interior of the cylinder is completely air, and the damping effect of the underwater damping hole is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater blasting shock absorption, in particular to an air-filled underwater shock absorption mechanism and a construction method thereof. Background Art

[0002] Underwater drilling and blasting is often used in projects such as channel dredging, reef clearing, and port terminal construction. Most of the energy generated by the explosive blasting is used to break the rock, and the remaining part spreads around in the bedrock in the form of seismic waves. Excessively strong seismic waves can damage the surrounding rock and buildings, posing a safety hazard.

[0003] To reduce the spread of seismic waves generated by underwater drilling and blasting, underwater shock-absorbing holes are often used as a protective measure to attenuate these waves. However, the damping effect of underwater shock-absorbing holes is significantly lower than that of those placed on land. This is because the speed of wave propagation in media follows the order: solid > liquid > gas. Underwater shock-absorbing holes often contain water and large amounts of sediment, resulting in poor damping effectiveness.

[0004] In view of this, how to provide an underwater shock-absorbing hole structure with better shock-absorbing effect is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide an air-filled underwater shock absorbing mechanism and a construction method thereof, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides an air-filled underwater shock absorbing mechanism, comprising:

[0007] The cylinder is hollow inside and has a drainage hole at the bottom;

[0008] A temporary sealing member, sealingly disposed on the outer surface of the drainage hole;

[0009] A gas input mechanism, one end of which is in sealed communication with the top of the cylinder, and the other end of which is in communication with a high-pressure air pump via an air pipe; the gas input mechanism is used to input air into the cylinder. When the air pressure inside the cylinder reaches a preset pressure, the air inside the cylinder can push open the temporary seal and discharge the water inside the cylinder;

[0010] A one-way valve is arranged at one end of the gas input mechanism.

[0011] Furthermore, the gas input mechanism includes:

[0012] a lower connecting portion, wherein the one-way valve is disposed in the lower connecting portion, and the bottom of the lower connecting portion is in sealed communication with the top of the cylinder;

[0013] A rotating connecting piece, wherein the top of the lower connecting portion is threadedly connected to the rotating connecting piece;

[0014] The upper connecting part, the rotating connecting piece can be rotatably set at the bottom of the upper connecting part, the top of the upper connecting part has a connecting port, the connecting port is connected with the air supply pipe, and the rotating connecting piece is connected with the upper connecting part and the lower connecting part respectively; the high-pressure air pump inputs air into the connecting port through the air supply pipe, and enters the cylinder through the upper connecting part, the rotating connecting piece and the lower connecting part in sequence.

[0015] Furthermore, it also includes:

[0016] A coupling gear is provided on the top of the rotating connecting member, and the coupling gear is provided with air holes through the upper and lower surfaces;

[0017] A servo motor is arranged in the upper connecting part and is connected to the engaging gear through a meshing gear. The servo motor can drive the engaging gear to rotate through the meshing gear, so as to tighten or loosen the rotating connecting member and the lower connecting part.

[0018] Furthermore, a limiting member is provided on the top of the engaging gear, and the limiting member extends outward to form an annular connecting portion. The upper connecting portion is provided with a limiting ring corresponding to the rotation of the annular connecting portion, and the annular connecting portion is embedded in the limiting ring and is slidably connected to the limiting ring.

[0019] Furthermore, the cylinder includes an upper cylinder, a middle cylinder and a lower cylinder that are threadedly connected in sequence from top to bottom, the upper cylinder is threadedly connected to the rotating connecting piece, and a drainage hole is provided at the bottom of the lower cylinder.

[0020] Furthermore, the temporary sealing member is bonded to the outer surface of the drainage hole.

[0021] The present invention also provides a construction method of an air-filled underwater shock-absorbing mechanism, which uses the air-filled underwater shock-absorbing mechanism and includes the following steps:

[0022] S1: Drilling multiple shock-absorbing holes in the underwater bedrock;

[0023] S2: Fill the cylinder with water, and install the upper connecting part, the rotating connecting part and the lower connecting part to form a gas input mechanism;

[0024] S3: The bottom of the lower connecting part is sealed and connected with the top of the cylinder to form an air-filled underwater shock absorbing mechanism;

[0025] S4: air is sent into the shock absorbing hole through the drill pipe sleeve to fill the shock absorbing hole with obstructions;

[0026] S5: Turn on the high-pressure air pump and input air into the cylinder through the gas input mechanism. When the air reaches the preset pressure, the temporary seal is pushed open, and the air discharges the water in the cylinder from the drain hole. The air in the cylinder prevents external water from entering the cylinder from the drain hole.

[0027] S6: The servo motor drives the engagement gear and the rotating connector to rotate through the meshing gear, loosens the rotating connector and the lower connector, and pulls up the gas pipe to reclaim the upper connector and the rotating connector.

[0028] Furthermore, multiple shock-absorbing holes are drilled in the underwater bedrock 5-10 meters away from the building, and the multiple shock-absorbing holes are evenly spaced.

[0029] Furthermore, the diameter of the shock-absorbing holes is 50-150 mm, and the distance between adjacent shock-absorbing holes is 2-3 times the diameter.

[0030] Furthermore, the height of the obstruction is at least 30 cm.

[0031] The present invention discloses the following technical effects:

[0032] 1. High-pressure air is used to drain the water from the cylinder, ensuring a strong seal. Once the high-pressure air enters the cylinder, it replaces the water filling with air. Furthermore, the high-pressure air within the cylinder acts as a natural seal, preventing external water from flowing back into the cylinder through the drain hole. Compared to existing technologies, the cylinder is completely filled with air, improving the shock absorption effect of the underwater shock-absorbing hole. The device also features a simple structure and easy installation, promising promising applications and a wide range of applications.

[0033] 2. The present invention is composed of split components, and each structure is connected by a threaded connection. When the air-filled underwater shock-absorbing mechanism is filled with air, the servo motor can drive the engaging gear and the rotating connector to rotate, loosen the rotating connector and the lower connecting part, pull up the air pipe to recover the upper connecting part and the rotating connector, so that the components can be used multiple times and construction costs can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 Schematic diagram of the gas input mechanism structure;

[0037] Figure 3 This is a schematic diagram of the gas input mechanism structure from another perspective;

[0038] Figure 4 This is a schematic diagram of the construction of the present invention;

[0039] Figure 5 Schematic diagram of the limiting ring structure;

[0040] Among them, 1. Cylinder; 101. Drain hole; 102. Upper cylinder; 103. Middle cylinder; 104. Lower cylinder; 2. Gas pipe; 3. Lower connecting part; 4. Rotating connecting piece; 5. Upper connecting part; 501. Connecting port; 6. Engaging gear; 7. Meshing gear; 8. Shock-absorbing hole; 9. Obstruction; 10. Bedrock; 11. Limiting piece; 12. Limiting ring. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides an air-filled underwater shock absorbing mechanism, comprising:

[0044] The cylinder 1 is hollow inside and has a drainage hole 101 at the bottom;

[0045] A temporary sealing member, sealingly disposed on the outer surface of the drain hole 101;

[0046] The gas input mechanism has one end sealed and connected to the top of the cylinder 1, and the other end is connected to the high-pressure air pump through the gas pipe 2. The gas input mechanism is used to input air into the cylinder 1. When the air pressure inside the cylinder 1 reaches a preset pressure, the air inside the cylinder 1 can push open the temporary seal and discharge the water in the cylinder 1.

[0047] A one-way valve is provided at one end of the gas input mechanism.

[0048] In this embodiment, the gas input mechanism includes:

[0049] The lower connecting portion 3 has a one-way valve disposed therein, and the bottom of the lower connecting portion 3 is in sealed communication with the top of the cylinder 1. The one-way valve allows high-pressure air to be fed from the high-pressure air pump into the cylinder 1, ensuring that the gas does not escape from the gas input mechanism. The one-way valve can also maintain the sealing of the cylinder 1 after the rotating connecting member 4 described below is separated from the upper connecting portion 5.

[0050] The top of the lower connecting portion 3 is threadedly connected to the rotating connecting member 4;

[0051] The upper connecting part 5 and the rotating connecting part 4 can be rotatably arranged at the bottom of the upper connecting part 5. The top of the upper connecting part 5 has a connecting port 501, which is connected to the air supply pipe 2. The rotating connecting part 4 is respectively connected to the upper connecting part 5 and the lower connecting part 3; the high-pressure air pump inputs air into the connecting port 501 through the air supply pipe 2, and enters the cylinder 1 through the upper connecting part 5, the rotating connecting part 4 and the lower connecting part 3 in sequence.

[0052] In this embodiment, it also includes:

[0053] The engaging gear 6 is provided on the top of the rotating connecting member 4, and the engaging gear 6 is provided with air holes through the upper and lower surfaces;

[0054] The servo motor is arranged in the upper connecting part 5 and is connected to the engaging gear 6 through the meshing gear 7. The servo motor can drive the engaging gear 6 to rotate through the meshing gear 7 to tighten or loosen the rotating connecting member 4 and the lower connecting part 3.

[0055] In this embodiment, a limit member 11 is provided on the top of the engaging gear 6. The limit member 11 extends outward to form an annular connecting portion. A limit ring 12 is provided on the upper connecting portion so as to rotate relative to the annular connecting portion. The limit ring 12 is mounted within the upper connecting portion via a bearing. The annular connecting portion is embedded within the limit ring 12 and is slidably connected to the limit ring 12. In other embodiments, the limit member 11 may extend directly above the meshing gear 7, or other existing limit structures may be employed, as long as the engaging gear 6 and the meshing gear 7 are in transmission connection and do not disengage.

[0056] In this embodiment, the cylinder 1 includes an upper cylinder 102, a middle cylinder 103, and a lower cylinder 104, which are threadedly connected from top to bottom. The upper cylinder 102 is threadedly connected to the rotating connector 4, and the bottom of the lower cylinder 104 is provided with a drainage hole 101. In actual construction, the middle cylinder 103 of an appropriate length can be selected according to the actual requirements of the shock-absorbing hole 8. The middle cylinder 103 is then connected and installed with the upper cylinder 102 and the lower cylinder 104 to form the cylinder 1 structure. The middle cylinder 103 does not have the drainage hole 101, and the overall structure is very simple, so it is easy to manufacture and low in cost, which not only expands the scope of application but also reduces costs.

[0057] In this embodiment, the temporary sealing member is bonded to the outer surface of the drainage hole 101 .

[0058] The present invention also provides a construction method of an air-filled underwater shock-absorbing mechanism, which uses the air-filled underwater shock-absorbing mechanism and includes the following steps:

[0059] S1: Drill multiple shock-absorbing holes 8 in the underwater bedrock 10. The diameter of the shock-absorbing holes 8 is slightly larger than the outer diameter of the cylinder 1. The height of the shock-absorbing holes 8 must be at least 30 cm higher than the cylinder 1 to reserve sufficient space for filling.

[0060] S2: Fill the cylinder 1 with water, and install the upper connecting part 5, the rotating connecting member 4 and the lower connecting part 3 to form a gas input mechanism;

[0061] S3: The bottom of the lower connecting part 3 is sealed and connected with the top of the cylinder 1 to form an air-filled underwater shock absorbing mechanism;

[0062] S4: air is sent into the underwater shock-absorbing mechanism through the drill pipe sleeve into the shock-absorbing hole 8, and the obstruction 9 is filled into the shock-absorbing hole 8;

[0063] S5: Turn on the high-pressure air pump and input air into the cylinder 1 through the air input mechanism. When the air reaches a preset pressure, the temporary seal is pushed open, and the air discharges the water in the cylinder 1 from the drainage hole 101. The air in the cylinder 1 prevents external water from entering the cylinder 1 from the drainage hole 101.

[0064] S6: When a large number of bubbles appear on the water surface, it is determined that the interior of the cylinder 1 is completely replaced by air. The servo motor drives the engagement gear 6 and the rotating connector 4 to rotate via the meshing gear 7, loosening the rotating connector 4 and the lower connecting portion 3. The air supply pipe 2 is pulled upward to retract the upper connecting portion 5 and the rotating connector 4. At this point, the cylinder 1 is completely filled with air, and the air pressure can prevent water from entering the cylinder 1 through the drainage hole 101 (the air sealing principle is a prior art and will not be further described here).

[0065] S7: constructing an air-filled underwater shock-absorbing mechanism in the next shock-absorbing hole 8 until all the shock-absorbing holes 8 are constructed.

[0066] In this embodiment, a plurality of shock absorbing holes 8 are drilled in the underwater bedrock 10 at a distance of 5-10 meters from the building, and the plurality of shock absorbing holes 8 are evenly spaced.

[0067] In this embodiment, the diameter of the shock-absorbing holes 8 is 50-150 mm, and the spacing between adjacent shock-absorbing holes 8 is 2-3 times the diameter. In other embodiments, when the protection level is higher, the diameter can be increased and the spacing can be reduced to 1.5 times. Alternatively, multiple rows of shock-absorbing holes 8 (when vibration-sensitive) can be used, with the row spacing being 0.8-1.2 times the hole spacing, and the shock-absorbing holes 8 arranged in a plum blossom or rectangular array. For linear structures, such as shoreside houses, bank slopes, and pontoons, the shock-absorbing holes 8 are arranged horizontally parallel to the structure. For columnar structures, such as bridge piers and lighthouses, the shock-absorbing holes 8 are arranged in an arc shape.

[0068] In this embodiment, the height of the obstruction 9 is at least 30 cm.

[0069] Application Examples

[0070] The construction site is an underwater blasting project in a certain water area. The construction method adopts the method disclosed in the above embodiment, wherein the blasting hole is 4m long, the shock-absorbing hole 8 has a length L=5m, a diameter D=110mm, a hole spacing=0.2m, and the shock-absorbing holes 8 are arranged in multiple rows with a row spacing of 1.4m.

[0071] The diameter of the cylinder 1 is 100 mm, the upper cylinder 102 h1 = 10 cm, the lower cylinder 104 h3 = 10 cm, and the middle cylinder 103 h2 is adjusted to h2 = 4.5 m based on the depth of the on-site shock-absorbing hole 8 of 5 m.

[0072] The obstruction 9 is gravel to prevent the cylinder 1 from floating up after air replacement. It should be noted that although the gravel covers the upper connecting part 5, the gravel is not compacted. Therefore, in step S6, when the air pipe 2 is pulled up, the upper connecting part 5 and the rotating connecting part can be taken out from the shock-absorbing hole 8.

[0073] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 on the present invention.

[0074] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An air-filled underwater shock-absorbing mechanism, characterized in that: include: The cylinder (1) is hollow inside and has a drainage hole (101) at the bottom; A temporary sealing member, sealingly arranged on the outer surface of the drainage hole (101); A gas input mechanism, one end of which is in sealed communication with the top of the cylinder (1), and the other end of which is in communication with the high-pressure air pump via an air delivery pipe (2); the gas input mechanism is used to input air into the cylinder (1); when the air pressure inside the cylinder (1) reaches a preset pressure, the air inside the cylinder (1) can push open the temporary seal and discharge the water inside the cylinder (1); A one-way valve is arranged at one end of the gas input mechanism.

2. The air-filled underwater shock absorbing mechanism according to claim 1, characterized in that: The gas input mechanism comprises: A lower connecting portion (3), wherein the one-way valve is arranged in the lower connecting portion (3), and the bottom of the lower connecting portion (3) is in sealed communication with the top of the cylinder (1); A rotating connecting member (4), wherein the top of the lower connecting portion (3) is threadedly connected to the rotating connecting member (4); The upper connecting part (5) is provided with a rotating connecting member (4) which is rotatably arranged at the bottom of the upper connecting part (5). The top of the upper connecting part (5) is provided with a connecting port (501), the connecting port (501) is communicated with the air delivery pipe (2), and the rotating connecting member (4) is communicated with the upper connecting part (5) and the lower connecting part (3) respectively. The high-pressure air pump inputs air into the connecting port (501) through the air delivery pipe (2), and the air enters the cylinder (1) through the upper connecting part (5), the rotating connecting member (4) and the lower connecting part (3) in sequence.

3. The air-filled underwater shock absorbing mechanism according to claim 2, characterized in that: Also includes: A coupling gear (6) is provided on the top of the rotating connecting member (4), and air holes are provided on the upper and lower surfaces of the coupling gear (6); A servo motor is arranged in the upper connecting portion (5) and is connected to the engaging gear (6) through a meshing gear (7). The servo motor can drive the engaging gear (6) to rotate through the meshing gear (7) to tighten or loosen the rotating connecting member (4) and the lower connecting portion (3).

4. The air-filled underwater shock absorbing mechanism according to claim 3, characterized in that: A limiting member (11) is provided on the top of the engaging gear (6), and the limiting member (11) extends outward to form an annular connecting portion. The upper connecting portion is rotatably provided with a limiting ring (12) corresponding to the annular connecting portion, and the annular connecting portion is embedded in the limiting ring (12) and is slidably connected to the limiting ring (12).

5. The air-filled underwater shock absorbing mechanism according to claim 4, characterized in that: The cylinder (1) comprises an upper cylinder (102), a middle cylinder (103) and a lower cylinder (104) which are threadedly connected in sequence from top to bottom; the upper cylinder (102) is threadedly connected to a rotating connecting member (4); and a drainage hole (101) is provided at the bottom of the lower cylinder (104).

6. The air-filled underwater shock absorbing mechanism according to claim 4, characterized in that: The temporary sealing member is bonded to the outer surface of the drainage hole (101).

7. A construction method for an air-filled underwater shock-absorbing mechanism, characterized in that: The air-filled underwater shock absorbing mechanism according to any one of claims 4 to 6 comprises the following steps: S1: Drilling a plurality of shock-absorbing holes (8) in underwater bedrock (10); S2: Fill the cylinder (1) with water, and install the upper connecting part (5), the rotating connecting member (4) and the lower connecting part (3) to form a gas input mechanism; S3: The bottom of the lower connecting portion (3) is sealed and connected to the top of the cylinder (1) to form an air-filled underwater shock-absorbing mechanism; S4: air is sent into the underwater shock-absorbing mechanism through the drill pipe sleeve into the shock-absorbing hole (8), and a blocking object (9) is filled into the shock-absorbing hole (8); S5: Turn on the high-pressure air pump and input air into the cylinder (1) through the air input mechanism. When the air reaches a preset pressure, the temporary seal is pushed open, and the air discharges the water in the cylinder (1) from the drainage hole (101). The air in the cylinder (1) blocks the external water from entering the cylinder (1) from the drainage hole (101); S6: The servo motor drives the engagement gear (6) and the rotating connector (4) to rotate through the meshing gear (7), loosens the rotating connector (4) and the lower connecting part (3), pulls up the air pipe (2) and retracts the upper connecting part (5) and the rotating connector (4).

8. The construction method of an air-filled underwater shock-absorbing mechanism according to claim 7, characterized in that: A plurality of shock-absorbing holes (8) are drilled in underwater bedrock (10) 5-10 meters away from the building, and the plurality of shock-absorbing holes (8) are evenly spaced.

9. The construction method of an air-filled underwater shock-absorbing mechanism according to claim 7, characterized in that: The diameter of the shock-absorbing holes (8) is 50-150 mm, and the distance between adjacent shock-absorbing holes (8) is 2-3 times the diameter.

10. The construction method of an air-filled underwater shock-absorbing mechanism according to claim 7, characterized in that: The height of the obstruction (9) is at least 30 cm.

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