Underwater diamond wire saw cutting device

Abstract

The utility model provides a kind of underwater diamond rope saw cutting device, including rack, clamping mechanism for clamping conduit rack is equipped on the rack, and cutting mechanism is slidably connected with the rack, wherein, the cutting mechanism includes the frame configured as U-shaped structure, and the wheel assembly that is allowed to cut the conduit rack to rotate to cut diamond string bead rope is set on the frame.

Description

Technical Field

[0001] This utility model relates to the field of marine platform facility dismantling technology, specifically to an underwater diamond wire saw cutting device. Background Technology

[0002] my country has vast territorial waters, and offshore oil and gas development is currently underway in the North Sea, South China Sea, and East China Sea. Subsea oil and gas pipelines have been laid for nearly 20 years, and many are facing the risk of damage. Furthermore, according to law, these facilities must be properly decommissioned and abandoned after reaching their economic lifespan or ceasing use. However, both the repair of subsea pipelines and the dismantling of marine facilities are extremely costly. How to safely, cleanly, and efficiently dismantle these marine facilities has gradually become a crucial issue in offshore oil and gas engineering.

[0003] Currently, existing offshore platform demolition technologies mainly include underwater blasting and underwater cutting. Underwater blasting requires placing a shaped charge cutter at the point of impact, then detonating the explosive. High-pressure gas is ejected, and the pipe is severed under high temperature and pressure, resulting in a highly irregular cut. Underwater blasting demolition technology has the advantages of fast construction speed and high efficiency, but it is also highly dangerous and can cause serious marine environmental pollution. Underwater cutting mainly includes thermal cutting, abrasive waterjet cutting, and diamond wire saw cutting. Underwater thermal cutting has advantages such as high efficiency and simple equipment, but the operation requires qualified divers to perform the cutting on-site, is labor-intensive, and has limited operating depth. Abrasive waterjet cutting and diamond wire sawing are commonly used underwater demolition tools in recent years. Their operation is clean, green, and efficient, but abrasive waterjet cutting has high requirements for the support vessel and high maintenance costs for related facilities. Diamond wire saws, on the other hand, have problems such as complex structure, susceptibility to saw jamming, and susceptibility to ocean currents during underwater operations.

[0004] Therefore, it is desirable in the art to provide an underwater diamond wire saw cutting device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose an underwater diamond wire saw cutting device that can solve the problems of existing underwater diamond wire saw machines, such as complex overall structure, easy swaying under external force during cutting, and easy saw clamping during cutting.

[0006] According to this utility model, an underwater diamond wire saw cutting device is provided, including a frame, on which a clamping mechanism for clamping a guide frame is provided, and

[0007] The cutting mechanism is slidably connected to the frame.

[0008] The cutting mechanism includes a frame configured in a U-shape and a wheel assembly disposed on the frame and allowing the diamond beaded cord to rotate to cut the guide frame.

[0009] In one embodiment, the wheel assembly includes a first drive wheel and a second drive wheel spaced apart at the front end of the frame, and a tension wheel and a guide wheel spaced apart at the rear end of the frame.

[0010] The cutting mechanism also includes a first hydraulic motor connected to the first drive wheel and the second drive wheel.

[0011] In one embodiment, L-shaped baffles for protecting the diamond beaded cord are provided at each of the three sides of the frame.

[0012] In one embodiment, the cutting mechanism further includes an anti-pinch saw pad fixed to the frame by an anti-pinch saw mounting plate.

[0013] In one embodiment, two spaced racks are provided on the upper end face of the frame.

[0014] The underwater diamond wire saw cutting device includes a drive shaft meshing with the rack, a reducer fixedly connected to the frame and adapted to the drive shaft, and a second hydraulic motor mounted on the reducer.

[0015] In one embodiment, a first side baffle and a second side baffle are respectively provided at both ends of the frame to limit the movement path of the frame.

[0016] In one embodiment, the clamping mechanism includes a clamping arm rotatably connected to the frame via a connecting plate, and a hydraulic cylinder for driving the clamping arm.

[0017] In one embodiment, a positioning plate is further provided on the frame, the positioning plate comprising a first positioning pad and a first support plate arranged sequentially.

[0018] In one embodiment, the underwater diamond wire saw cutting device further includes an auxiliary support mechanism disposed below the frame. The auxiliary support mechanism includes a folding frame arranged on the frame via a connecting angle, and a second positioning pad and a second support plate arranged sequentially at the front end of the folding frame and used to abut against the side wall of the guide frame.

[0019] In one embodiment, a folding frame rod for abutting the guide frame is provided on the folding frame.

[0020] Compared with the prior art, the advantages of this utility model are:

[0021] This device can solve the problems of existing underwater diamond wire saw machines, such as complex overall structure, easy swaying under external force during cutting operations, and easy saw clamping during cutting operations. It can also perform underwater dismantling operations on pipe supports or pile foundations with a diameter of 60 inches.

[0022] Based on this, an auxiliary support mechanism was designed, which can effectively improve the stability of the device during underwater operations without adding an additional power source. At the same time, the anti-pinch saw pad is installed on the frame through the anti-pinch saw mounting plate. Thus, during the diamond beaded rope cutting process, when the cutting clamping force on the anti-pinch saw pad is greater than the pre-tightening force, it can automatically fall off and be inserted into the cutting gap to prevent the cutting from continuing to close and causing the saw to get stuck, thereby further ensuring the reliability of deep-water cutting operations. Attached Figure Description

[0023] The present invention will now be described in detail with reference to the accompanying drawings, in which:

[0024] Figure 1 The schematic diagram illustrates the structure of the underwater diamond wire saw cutting device according to the present invention;

[0025] Figure 2 The diagram illustrates the connection relationship between the frame, clamping mechanism, and auxiliary support mechanism;

[0026] Figure 3 The schematic diagram illustrates the specific structure of the cutting mechanism;

[0027] Figure 4 for Figure 1 A partial view.

[0028] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0029] To make the technical solution and advantages of this utility model clearer, the exemplary embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0030] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components.

[0032] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 The schematic diagram shows the structure of the underwater diamond wire saw cutting device 100 according to the present invention;

[0035] Figure 2 The diagram illustrates the connection relationship between the frame, clamping mechanism, and auxiliary support mechanism;

[0036] like Figures 1-2 As shown, the underwater diamond wire saw cutting device 100 according to this utility model mainly includes a frame 10, a clamping mechanism disposed at the front end of the frame 10 for clamping the guide frame 60, and a cutting mechanism disposed on the frame 10 and slidably connected thereto. Preferably, the frame 10 is formed by bolting together multiple plates with weight-reducing holes, which mainly provides support and protection for the fixed integration of other devices.

[0037] In the existing technology, underwater blasting demolition technology has the advantages of fast construction speed and high efficiency, but it is also highly dangerous and can cause serious pollution to the marine ecological environment. Therefore, this device can more easily complete the cutting of the jacket 60 through underwater cutting operations. That is, the relative position between the device and the jacket 60 is fixed by the clamping mechanism, and then the cutting mechanism is used to cut the jacket 60, so as to further improve the reliability of deep-water cutting.

[0038] In one embodiment, such as Figures 1-2 As shown, the cutting mechanism includes a frame 31 configured in a U-shape and a wheel assembly mounted on the frame 31. Preferably, a diamond beaded rope 32 is fitted over the wheel assembly and can rotate under the action of the wheel assembly to facilitate the cutting of the guide frame 60. Preferably, the frame 31 is composed of multiple plates connected by bolts to further improve the stability and robustness of the device.

[0039] Figure 3 The schematic diagram illustrates the specific structure of the cutting mechanism;

[0040] In this utility model, such as Figure 3 As shown, the wheel assembly includes a first drive wheel 301 and a second drive wheel 302 spaced apart at the front end of the frame 31, and a tension wheel 303 and a guide wheel 304 spaced apart at the rear end of the frame 31. The first drive wheel 301 and the second drive wheel 302 are respectively connected to two first hydraulic motors to drive the diamond bead rope 32.

[0041] In one embodiment, such as Figure 1 As shown, L-shaped baffles 33 are respectively provided on the three side ends of the frame 31 (excluding the end where the diamond beaded rope 32 contacts the guide frame 60). Preferably, the L-shaped baffles 33 can fully cover the outside of the diamond beaded rope 32 to provide good protection for it.

[0042] In one embodiment, such as Figure 1 As shown, the cutting mechanism also includes an anti-pinch saw mounting plate 34 and an anti-pinch saw pad 35. Preferably, the anti-pinch saw pad 35 is fixed in the U-shaped groove of the frame 31 by the anti-pinch saw mounting plate 34. In other words, the anti-pinch saw mounting plate 34 is fixedly mounted on the frame 31, and the anti-pinch saw pad 35 is connected to the anti-pinch saw mounting plate 34 by a pressing method. Thus, during the cutting process of the diamond beaded rope 32, when the cutting clamping force on the anti-pinch saw pad 35 is greater than the pre-tightening force, it can automatically fall off and be inserted into the cutting gap to prevent the cutting from continuing to close and causing the saw to get stuck.

[0043] In one embodiment of this utility model, such as Figure 1 and 2 As shown, the clamping mechanism includes clamping arms rotatably connected to the frame 10 via a connecting plate 20, and hydraulic cylinders for driving the clamping arms. In this invention, the clamping arms include clamping arms 211 and 212, which are constructed in an arc shape and arranged symmetrically. The hydraulic cylinders also include hydraulic cylinders 221 and 222, which are respectively connected to clamping arms 211 and 212. Preferably, under the action of the hydraulic cylinders, the two clamping arms can fully grip the guide tube frame 60 to ensure that subsequent cutting work can proceed smoothly.

[0044] In one embodiment, such as Figure 2 As shown, a positioning plate is also provided on the frame 10. Preferably, the positioning plate is located on the side of the frame 10 near the clamping mechanism, and the positioning plate includes a first positioning pad 23 and a first support plate 24 connected to each other. During installation, the first positioning pad 23 and the first support plate 24 are fixed with bolts, and then the first support plate 24 is fixedly connected to the frame 10 with screws. Thus, the frame 10 can achieve a tight fit with the guide rail 60 through the first positioning pad 23, which facilitates subsequent cutting operations.

[0045] Figure 4 for Figure 1 A partial view.

[0046] In one embodiment, such as Figure 4 As shown, two spaced racks 41 are provided on the upper end face of the frame 10, and the underwater diamond wire saw cutting device 100 also includes a drive shaft 42 that meshes with the racks 41. Preferably, a reducer and a second hydraulic motor 43 are sequentially provided on the drive shaft 42, and the reducer is fixedly connected to the bottom of the frame 31. Thus, under the driving action of the second hydraulic motor 43, the cutting mechanism can be moved along the length direction of the racks 41 to achieve cutting feed.

[0047] Preferably, after the cutting operation is completed, the ROV assists in recovering the wire saw to the mother ship, and timely equipment maintenance and scientific storage are carried out.

[0048] In this utility model, such as Figure 4 As shown, the reducer consists of a planetary reducer 44 and a worm gear reducer 45. The second hydraulic motor 43 is connected to the planetary reducer 44, and the worm gear reducer 45 is connected to the planetary reducer 44 and the drive shaft 42 via couplings. Thus, the power provided by the second hydraulic motor 43 passes through the planetary reducer 44 and the worm gear reducer 45 in sequence before entering the drive shaft 42, thereby causing the cutting mechanism to move along the length of the rack 41.

[0049] Preferably, double V-shaped guide rails 25 are respectively provided on the side walls of the frame 10, and sliding parts adapted to the double V-shaped guide rails 25 are also provided on the frame 31, thereby improving the stability of the cutting mechanism during operation. In this utility model, the double V-shaped guide rails 25 are not easily deformed, making them more suitable for long-distance cutting operations, thus improving the reliability of the feed motion.

[0050] In one embodiment, such as Figure 1 and 2 As shown, a first side baffle 36 and a second side baffle 37 are respectively provided at both ends of the frame 10. Preferably, the first side baffle 36 is located at the rear end of the frame 10, thus effectively restricting the movement path of the cutting mechanism during its reset operation; the second side baffle 37 is located at the junction of the frame 10 and the two clamping arms, thus effectively restricting the movement path of the cutting mechanism during its feed operation. In this way, the cutting mechanism can have the maximum travel distance to successfully complete the cutting operation.

[0051] In one embodiment, such as Figure 2As shown, the underwater diamond wire saw cutting device 100 also includes an auxiliary support mechanism disposed below the frame 10. Preferably, the auxiliary support mechanism includes a folding frame 52 arranged on the frame 10 via a connecting angle 51, and a second positioning pad 53 and a second support plate 54 arranged sequentially at the front end of the folding frame 52. Preferably, the folding frame 52 is fixed by multiple channel steels and plates connected and fixed by screws, and the second positioning pad 53 and the second support plate 54 are fixed by bolts.

[0052] Preferably, such as Figure 2 As shown, a folding frame rod 55 is provided on the folding frame 52. Therefore, the front end of the folding frame 52 is connected to the folding frame rod 55 by a shaft, and the rear end of the folding frame 52 is connected to the connecting angle 51 by a shaft. In use, the folding frame rod 55 will automatically open under the action of gravity and form a certain angle with the clamping mechanism to jointly press against the guide frame 60, thereby effectively preventing the device from swinging up and down due to external forces during operation.

[0053] Preferably, the outer surface of the device is coated with underwater anti-corrosion paint, which can effectively reduce the corrosion and deterioration of metals in the ocean.

[0054] In practical applications, after the device is lowered to the designated depth, it is assisted by an underwater robot (ROV) to install it onto the guide frame 60 to be cut. The clamping arm positions and tightens the guide frame 60 through a hydraulic cylinder, and the clamping mechanism and auxiliary support mechanism work together to ensure a firm and reliable installation.

[0055] Then, the cutting mechanism is driven by the second hydraulic motor 43 to move along the length of the rack 41 to achieve low-speed and stable cutting feed; the first hydraulic motor drives the first drive wheel 301 and the second drive wheel 302, and at the same time causes the diamond beaded rope 32 to rotate to cut the guide frame 60.

[0056] After the cutting work is completed, the diamond bead rope 32 needs to be cut by the hydraulic shears of the underwater robot, and the clamping arm is reset and detached from the guide frame 60 by the retraction of the hydraulic cylinder. The underwater robot will then assist in the recovery of the device to the mother ship, and the equipment will be maintained and stored scientifically in a timely manner.

[0057] Preferably, this device is capable of dismantling a 60-inch diameter jacket or pile foundation underwater. The auxiliary support mechanism designed on this basis can effectively improve the stability of underwater operations without adding an additional power source.

[0058] Compared with existing technologies, the advantages of this utility model are:

[0059] This device can solve the problems of existing underwater diamond wire saw machines, such as complex overall structure, easy swaying under external force during cutting operations, and easy saw clamping during cutting operations. It can also perform underwater dismantling operations on 60-inch diameter pipe supports or pile foundations.

[0060] Based on this, an auxiliary support mechanism was designed, which can effectively improve the stability of the device in underwater operation without adding an additional power source. At the same time, the anti-pinch saw pad 35 is installed on the frame 31 through the anti-pinch saw mounting plate 34. Thus, during the cutting process of the diamond bead rope 32, when the cutting clamping force on the anti-pinch saw pad 35 is greater than the pre-tightening force, it can automatically fall off and be inserted into the cutting gap to prevent the cutting from continuing to close and causing the saw to get stuck, so as to further ensure the reliability of deep-water cutting operations.

[0061] The above are merely preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of this utility model, and such changes or modifications should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An underwater diamond wire saw cutting device, characterized in that, include: A frame (10) is provided with a clamping mechanism for clamping the guide frame (60), and The cutting mechanism is slidably connected to the frame (10). The cutting mechanism includes a frame (31) configured in a U-shape and a wheel assembly disposed on the frame (31) and allowing the diamond beaded cord (32) to rotate to cut the guide frame (60).

2. The underwater diamond wire saw cutting device according to claim 1, characterized in that, The wheel assembly includes a first drive wheel (301) and a second drive wheel (302) spaced apart at the front end of the frame (31), and a tension wheel (303) and a guide wheel (304) spaced apart at the rear end of the frame (31). The cutting mechanism also includes a first hydraulic motor connected to the first drive wheel (301) and the second drive wheel (302).

3. The underwater diamond wire saw cutting device according to claim 2, characterized in that, L-shaped baffles (33) for protecting the diamond beaded rope (32) are provided at the three sides of the frame (31).

4. The underwater diamond wire saw cutting device according to claim 3, characterized in that, The cutting mechanism also includes an anti-pinch saw pad (35) fixed to the frame (31) by an anti-pinch saw mounting plate (34).

5. The underwater diamond wire saw cutting device according to claim 4, characterized in that, Two spaced racks (41) are provided on the upper end face of the frame (10). The underwater diamond wire saw cutting device includes a drive shaft (42) meshing with the rack (41), a reducer fixedly connected to the frame (31) and adapted to the drive shaft (42), and a second hydraulic motor (43) mounted on the reducer.

6. The underwater diamond wire saw cutting device according to claim 5, characterized in that, A first side baffle (36) and a second side baffle (37) are respectively provided at both ends of the frame (10) to restrict the movement path of the frame (31).

7. The underwater diamond wire saw cutting device according to claim 6, characterized in that, The clamping mechanism includes a clamping arm that is rotatably connected to the frame (10) via a connecting plate (20), and a hydraulic cylinder for driving the clamping arm.

8. The underwater diamond wire saw cutting device according to any one of claims 1 to 7, characterized in that, A positioning plate is also provided on the frame (10), the positioning plate including a first positioning pad (23) and a first support plate (24) arranged in sequence.

9. The underwater diamond wire saw cutting device according to any one of claims 1 to 7, characterized in that, The underwater diamond wire saw cutting device also includes an auxiliary support mechanism disposed below the frame (10). The auxiliary support mechanism includes a folding frame (52) arranged on the frame (10) via a connecting angle (51), and a second positioning pad (53) and a second support plate (54) arranged sequentially at the front end of the folding frame (52) for abutting against the side wall of the guide frame (60).

10. The underwater diamond wire saw cutting device according to claim 9, characterized in that, A folding frame rod (55) is provided between the folding frame (52) and the frame (10).

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