Swing arm type underwater diamond wire saw machine

Abstract

The utility model discloses a swing arm formula underwater diamond rope saw -mill relates to underwater pipeline cutting equipment technical field, include: floor, the bottom of floor is equipped with the gap, and the gap is used to accommodate pipeline, clamping device sets up on floor, and clamping device is used for fixing pipeline on floor, big rope wheel, is fixed in floor, swing arm feed device is hinged in floor, and swing arm feed device can swing in the direction of approaching or moving away from pipeline, and big rope wheel and swing arm feed device common winding one diamond string bead rope, drive arrangement, is fixed in floor, and drive arrangement is connected with big rope wheel, and big rope wheel rotation drives diamond string bead rope rotation to carry out cutting. The swing arm formula underwater diamond rope saw -mill can carry out arc cutting to underwater small -size structure, and the operation is convenient, and cutting efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater pipeline cutting equipment, and in particular to a swing-arm type underwater diamond wire saw. Background Technology

[0002] In the field of marine engineering, the laying, maintenance, and dismantling of subsea pipelines are frequent operations, and cutting technology is a key component. Although various cutting technologies have been developed for subsea pipeline cutting, many technical challenges remain in practical applications, particularly for cutting small, multi-material structures.

[0003] Existing underwater miniature pipe cutting devices have significant defects.

[0004] Firstly, the complex structural design, containing numerous mechanical components and transmission mechanisms, results in a large overall size of the device. In confined underwater spaces, such as areas with dense submarine pipelines or complex terrain, large-sized devices are difficult to deploy and operate flexibly, limiting their application scope.

[0005] Secondly, the pipe is prone to displacement during the cutting process. Due to the insufficient stability of the fixing method, the position of the pipe changes under the action of cutting force, which not only affects the cutting accuracy and makes the cut surface uneven, but may also cause safety accidents.

[0006] Third, it is inconvenient to operate.

[0007] In view of the above problems, it is necessary to develop a swing-arm underwater diamond wire saw with a compact structure, convenient operation and high cutting efficiency. Utility Model Content

[0008] The purpose of this invention is to provide a swing-arm type underwater diamond wire saw that solves the technical problems of slow cutting efficiency and inability to guarantee cutting accuracy in existing underwater pipe cutting machines.

[0009] To achieve the above objectives, this utility model provides a swing-arm type underwater diamond wire saw, comprising:

[0010] A rib, the bottom of which has a notch for accommodating a pipe;

[0011] A clamping device is provided on the rib plate, and the clamping device is used to fix the pipe on the rib plate;

[0012] A large rope pulley is fixedly mounted on the rib plate;

[0013] A swing arm feed device is hinged to the rib plate. The swing arm feed device can swing towards or away from the pipe. The large rope pulley and the swing arm feed device are wound together with a diamond beaded rope.

[0014] A drive device is fixed to the rib plate and connected to the large rope wheel. The rotation of the large rope wheel drives the diamond beaded rope to rotate for cutting.

[0015] Preferably, the clamping device includes:

[0016] A swing link, the middle part of which is hinged to the rib plate;

[0017] The first hydraulic cylinder is fixed on the rib plate, and the output end of the first hydraulic cylinder is rotatably connected to the swing link.

[0018] The second hydraulic cylinder is fixed on the swing linkage. The output end of the second hydraulic cylinder is connected to a V-shaped clamping claw. The extension and retraction of the first hydraulic cylinder realizes the reciprocating swing of the swing linkage, and the extension and retraction of the second hydraulic cylinder realizes the extension and retraction of the V-shaped clamping claw to clamp the pipe.

[0019] Preferably, the first hydraulic cylinder is threadedly connected to the rib plate, and the output end of the first hydraulic cylinder is rotatably connected to the swing link through an ear and a pin. The second hydraulic cylinder is threadedly connected to the swing link.

[0020] Preferably, the swing arm feed device includes:

[0021] The first swing arm, the first end of the first swing arm is rotatably connected to the rib plate through a swing arm shaft;

[0022] The second swing arm, the first end of the second swing arm is hinged to the second end of the first swing arm;

[0023] Hydraulic cylinder fixing component, fixed to the rib plate;

[0024] The third hydraulic cylinder has one end connected to the hydraulic cylinder fixing component and the other end rotatably connected to the first swing arm via a pin. The extension and retraction of the third hydraulic cylinder can drive the first swing arm to reciprocate.

[0025] The first small rope pulley and the second small rope pulley are connected to the second end of the first swing arm and the second small rope pulley is connected to the second end of the second swing arm. The first small rope pulley, the second small rope pulley and the large rope pulley together wind the diamond beaded rope and drive the diamond beaded rope to rotate and cut.

[0026] Preferably, a tensioning member for adjusting the tension of the diamond beaded rope is provided between the first swing arm and the second swing arm. The tensioning member includes a tension spring body, and tension sleeves are provided on both sides of the tension spring body. The tension sleeves on both sides are rotatably connected to the first swing arm and the second swing arm through tension pins.

[0027] Preferably, the driving device includes:

[0028] A hydraulic motor is connected to the large rope wheel via a rope wheel connecting shaft. The large rope wheel is connected to the rib plate via a rope wheel guard plate, a rope wheel shaft seat, and a rope wheel top sleeve.

[0029] Preferably, a shock-absorbing pad is provided inside the notch of the rib, and the shock-absorbing pad is in contact with the outer circumferential surface of the pipe.

[0030] Preferably, the outer surface of the swing-arm underwater diamond wire saw is coated with underwater anti-corrosion paint.

[0031] Preferably, the inner surface of the V-shaped gripper is provided with anti-slip texture.

[0032] Preferably, the anti-slip texture is wavy or striped.

[0033] Compared to the aforementioned background technology, the swing-arm underwater diamond wire saw provided by this utility model features a clamping device that can flexibly adjust the clamping force according to the pipe diameter, ensuring the pipe is firmly and stably fixed to the rib plate. During the cutting process, the clamping device effectively prevents pipe displacement or shaking, guaranteeing cutting accuracy and quality. The swing-arm feed device is hinged to the rib plate, allowing for flexible swinging towards or away from the pipe. Before the cutting operation begins, the operator can adjust the position of the swing-arm feed device according to the pipe diameter and cutting requirements, ensuring a tight fit between the diamond wire and the pipe. During the cutting process, the swing-arm feed device automatically adjusts the feed speed and force according to the cutting progress, ensuring the diamond wire cuts the pipe with constant pressure and speed, achieving efficient and precise cutting operations. The drive unit is fixed on the rib plate. When the drive unit is started, it can drive the large rope wheel to rotate at high speed, thereby causing the diamond bead rope to rotate and realize the cutting operation of the pipe. Therefore, the structure provided by this utility model is reasonable, more compact, and highly adaptable. It can perform arc cutting on small underwater structures, is easy to operate, and has high cutting efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 A front view of a swing-arm underwater diamond wire saw provided in an embodiment of this utility model;

[0036] Figure 2This is a schematic diagram of the swing arm feeding device provided in an embodiment of the present utility model;

[0037] Figure 3 This is a schematic diagram of the clamping device structure provided in an embodiment of the present utility model;

[0038] Figure 4 This is a schematic diagram of the drive device structure provided in an embodiment of the present utility model;

[0039] Figure 5 This is a schematic diagram of the tensioning member structure provided in an embodiment of the present utility model.

[0040] in:

[0041] 1-Rib plate, 2-Pipe, 3-Large rope pulley, 4-Diamond beaded rope, 5-Swing link, 6-First hydraulic cylinder, 7-Second hydraulic cylinder, 8-V-type clamping claw, 9-First swing arm, 10-Swing arm shaft, 11-Hydraulic cylinder fixing component, 12-Third hydraulic cylinder, 13-First small rope pulley, 14-Second small rope pulley, 15-Tension spring body, 16-Tension sleeve, 17-Tension pin, 18-Hydraulic motor, 19-Rope pulley connecting shaft, 20-Rope pulley guard plate, 21-Rope pulley shaft seat, 22-Rope pulley top sleeve, 23-Shock-absorbing rubber pad. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] See Figure 1 This utility model provides a swing-arm type underwater diamond wire saw, comprising: a rib plate 1, the bottom of which has a notch for accommodating a pipe 2; a clamping device disposed on the rib plate 1 for fixing the pipe 2 to the rib plate 1; a large rope pulley 3 fixedly disposed on the rib plate 1; a swing-arm feed device hinged to the rib plate 1, which can swing towards or away from the pipe 2, and the large rope pulley 3 and the swing-arm feed device together wind a diamond beaded rope 4; and a drive device fixedly disposed on the rib plate 1, which is connected to the large rope pulley 3, and the rotation of the large rope pulley 3 drives the diamond beaded rope 4 to rotate for cutting.

[0045] Specifically, rib 1, as the main support, is made of high-strength, corrosion-resistant alloy material to ensure sufficient structural strength and stability in harsh underwater environments. The bottom of rib 1 is specially provided with a notch to accommodate pipe 2, providing a stable foundation support for subsequent cutting operations. Pipe 2 is generally a small pipe, with a size of about 6 inches to 12 inches, and can also be used for cutting anchor chains, optical cables, umbilical cables, etc., generally in waters shallower than 60 meters.

[0046] The clamping device is installed on the rib plate 1 and can flexibly adjust the clamping force according to the diameter of the pipe 2 to ensure that the pipe 2 is firmly and stably fixed on the rib plate 1. During the cutting process, the clamping device can effectively prevent the pipe 2 from shifting or shaking, ensuring the accuracy and quality of the cutting.

[0047] The large rope pulley 3 is fixed on the rib plate 1 and is one of the important winding components of the diamond beaded rope 4. The large rope pulley 3 is made of high-quality steel and its surface has been specially treated. It has good wear resistance and corrosion resistance and can withstand the huge friction and tension generated by the diamond beaded rope 4 during high-speed rotation.

[0048] The swing arm feed device is hinged to rib 1, allowing it to swing flexibly towards or away from pipe 2. Before the cutting operation begins, the operator can adjust the position of the swing arm feed device according to the diameter of pipe 2 and the cutting requirements, ensuring that the diamond beaded rope 4 is in close contact with pipe 2. During the cutting process, the swing arm feed device can automatically adjust the feed speed and force according to the cutting progress, ensuring that the diamond beaded rope 4 cuts pipe 2 with constant pressure and speed, achieving efficient and precise cutting operations.

[0049] The drive device is fixed on the rib plate 1. When the drive device is started, it can drive the large rope wheel 3 to rotate at high speed, thereby causing the diamond bead rope 4 to rotate as well, thus realizing the cutting operation of the pipe 2. Therefore, the structure provided by this utility model is reasonable, more compact, and highly adaptable; it can perform arc cutting on small underwater structures, is easy to operate, and has high cutting efficiency.

[0050] Based on the above embodiments, see Figure 3 The clamping device includes a swing link 5, the middle of which is hinged to the rib plate 1; a first hydraulic cylinder 6, which is fixed to the rib plate 1, and the output end of the first hydraulic cylinder 6 is rotatably connected to the swing link 5; and a second hydraulic cylinder 7, which is fixed to the swing link 5, and the output end of the second hydraulic cylinder 7 is connected to a V-shaped clamping claw 8. The extension and retraction of the first hydraulic cylinder 6 realizes the reciprocating swing of the swing link 5, and the extension and retraction of the second hydraulic cylinder 7 realizes the extension and retraction of the V-shaped clamping claw 8, thereby clamping the pipe 2.

[0051] In other words, the middle part of the swing link 5 is hinged to the rib plate 1, allowing the swing link 5 to swing flexibly around the hinge point. The first hydraulic cylinder 6 is firmly fixed to the rib plate 1, and its output end is connected to the swing link 5 through a rotating connector. When the piston rod of the first hydraulic cylinder 6 extends or retracts, due to the constraint of the hinge in the middle of the swing link 5, it will drive the swing link 5 to swing back and forth around the hinge point.

[0052] The second hydraulic cylinder 7 is fixedly mounted on the swing linkage 5 and moves as the swing linkage 5 swings. The output end of the second hydraulic cylinder 7 is connected to a V-shaped clamping claw 8, which is made of high-strength, corrosion-resistant alloy material. Its V-shaped structure can better fit the outer surface of the pipe 2, providing a uniform clamping force. When the piston rod of the second hydraulic cylinder 7 extends or retracts, it drives the V-shaped clamping claw 8 to extend or retract. During the clamping process, by controlling the extension and retraction of the second hydraulic cylinder 7, the V-shaped clamping claw 8 can fit tightly against the pipe 2, achieving a firm clamping of the pipe 2.

[0053] In actual operation, the position of the swing linkage 5 is first adjusted by the extension and retraction of the first hydraulic cylinder 6 so that the V-shaped clamping claw 8 is close to the approximate position of the pipe 2; then, the clamping force of the V-shaped clamping claw 8 is adjusted by the extension and retraction of the second hydraulic cylinder 7 to ensure that the pipe 2 is stably fixed on the rib plate 1, thus preparing for the subsequent cutting operation.

[0054] Based on the above embodiments, the first hydraulic cylinder 6 is threadedly connected to the rib plate 1, and the output end of the first hydraulic cylinder 6 is rotatably connected to the swing link 5 through an ear ring and a pin. The second hydraulic cylinder 7 is threadedly connected to the swing link 5.

[0055] Based on the above embodiments, see Figure 2 The swing arm feeding device includes a first swing arm 9, the first end of which is rotatably connected to the rib plate 1 via a swing arm shaft 10; a second swing arm, the first end of which is hinged to the second end of the first swing arm 9; a hydraulic cylinder fixing member 11, which is fixed on the rib plate 1; a third hydraulic cylinder 12, one end of which is connected to the hydraulic cylinder fixing member 11, and the other end is rotatably connected to the first swing arm 9 via a pin. The extension and retraction of the third hydraulic cylinder 12 can drive the first swing arm 9 to reciprocate; a first small rope wheel 13 and a second small rope wheel 14, the first small rope wheel 13 being connected to the second end of the first swing arm 9 via a rotating shaft, and the second small rope wheel 14 being connected to the second end of the second swing arm via a rotating shaft. The first small rope wheel 13, the second small rope wheel 14, and the large rope wheel 3 together wind the diamond beaded rope 4 and drive the diamond beaded rope 4 to rotate and cut.

[0056] Specifically, its working principle is as follows: When the equipment starts cutting, the operator controls the piston rod of the third hydraulic cylinder 12 to extend. One end of the third hydraulic cylinder 12 is connected to the hydraulic cylinder fixing part 11 fixed on the rib plate 1, and the other end is rotatably connected to the first swing arm 9 through a pin. As the piston rod extends, the third hydraulic cylinder 12 applies a thrust to the first swing arm 9, causing the first swing arm 9 to rotate clockwise around the swing arm shaft 10. Since the first end of the second swing arm is fixedly hinged to the second end of the first swing arm 9, the rotation of the first swing arm 9 will drive the second swing arm to move accordingly, causing the second end of the second swing arm to gradually approach the pipe 2.

[0057] As the first swing arm 9 and the second swing arm swing, the first small rope pulley 13 and the second small rope pulley 14 also move accordingly. The first small rope pulley 13 is connected to the second end of the first swing arm 9 via a rotating shaft, and the second small rope pulley 14 is connected to the second end of the second swing arm via a rotating shaft.

[0058] As the third hydraulic cylinder 12 continues to extend, the first swing arm 9 and the second swing arm swing continuously, gradually increasing the contact between the diamond beaded rope 4 and the surface of the pipe 2 until a suitable cutting pressure is reached. At this point, the diamond beaded rope 4 begins to rotate at high speed under the drive of the large rope pulley 3, performing the cutting operation on the pipe 2.

[0059] During the cutting process, the cutting resistance will change accordingly due to variations in the material, diameter, and cutting depth of pipe 2. To ensure a smooth and efficient cutting process, the swing arm feed device needs to be dynamically adjusted in real time.

[0060] Based on the above embodiments, see Figure 5 A tensioning element for adjusting the tension of the diamond beaded rope 4 is provided between the first swing arm 9 and the second swing arm. The tensioning element includes a tension spring body 15, and tension sleeves 16 are provided on both sides of the tension spring body 15. The tension sleeves 16 on both sides are rotatably connected to the first swing arm 9 and the second swing arm through tension pins 17.

[0061] In other words, when the tension of the beaded rope decreases, the tension spring body 15 will extend under its own elastic force, driving the first swing arm 9 and the second swing arm to move relative to each other through the tension sleeve 16 and the tension pin 17, thereby increasing the tension of the beaded rope and maintaining it at an appropriate tension state. Conversely, when the tension of the beaded rope is too high, the tension spring body 15 will be compressed, reducing the force on the swing arm and preventing the beaded rope from breaking due to excessive tension.

[0062] For example, when cutting harder pipe materials, the cutting resistance increases, and the tension of the beaded rope increases accordingly. At this time, the tension spring body 15 is compressed, buffering some of the tension and preventing the beaded rope from being damaged due to excessive stretching. When cutting softer materials, the cutting resistance decreases, the tension of the beaded rope decreases, and the tension spring body 15 extends to replenish the tension of the beaded rope in time, ensuring the continuity and stability of the cutting.

[0063] The tensioning sleeve 16 connects the tension spring body 15 and the swing arm, protecting the tension spring body 15 from direct contact with the swing arm and subsequent wear. The tensioning pin 17 enables the rotational connection between the tensioning sleeve 16 and the swing arm, allowing the tensioning element to rotate flexibly with the swing arm.

[0064] When the first swing arm 9 and the second swing arm swing during the cutting process, the tensioning sleeve 16 rotates around the tensioning pin 17, ensuring that the tensioning spring body 15 is always under appropriate force, thereby effectively adjusting the tension of the diamond beaded rope 4. At the same time, the design of the tensioning pin 17 can also withstand a certain amount of tension and pressure, ensuring that the tensioning component works stably in complex underwater working environments.

[0065] Based on the above embodiments, see Figure 4 The driving device includes a hydraulic motor 18, which is connected to the large rope wheel 3 via a rope wheel connecting shaft 19. The large rope wheel 3 is connected to the rib plate 1 via a rope wheel guard plate 20, a rope wheel shaft seat 21, and a rope wheel top sleeve 22.

[0066] In other words, the sheave guard plate 20 is installed on both sides of the large sheave 3. The sheave guard plate 20 can prevent the diamond beaded rope 4 from falling off the large sheave 3 during operation. In addition, the sheave guard plate 20 can also prevent external debris from entering between the large sheave 3 and the wire saw, thus avoiding damage to the wire saw.

[0067] The sheave shaft seat 21 is fixed on the rib plate 1 and is a component that supports the large sheave 3 and the sheave connecting shaft 19. The sheave shaft seat 21 is equipped with a high-precision bearing, which cooperates with the sheave connecting shaft 19 to ensure that the large sheave 3 can rotate flexibly and reduce friction and wear during rotation.

[0068] The top sleeve 22 of the rope pulley is located on the top of the rope pulley shaft seat 21 and cooperates with the rope pulley connecting shaft 19. It plays a role in positioning and fixing, and can prevent the rope pulley connecting shaft 19 from axial movement during operation, thus ensuring the installation accuracy and operational stability of the large rope pulley 3.

[0069] The hydraulic system supplies high-pressure hydraulic oil to the hydraulic motor 18, which starts to rotate, converting hydraulic energy into mechanical energy. The output shaft of the hydraulic motor 18 drives the rope wheel connecting shaft 19 to rotate through the coupling. The rope wheel connecting shaft 19 then transmits the power to the large rope wheel 3, causing the large rope wheel 3 to start rotating at high speed.

[0070] Based on the above embodiments, a shock-absorbing pad 23 is provided on the inner side of the notch of the rib plate 1. The shock-absorbing pad 23 is in contact with the outer circumference of the pipe 2. The outer surface of the swing arm type underwater diamond wire saw is coated with underwater anti-corrosion paint.

[0071] A shock-absorbing pad 23 is installed inside the notch of the rib plate 1 of the swing-arm underwater diamond wire saw. The shock-absorbing pad 23 is usually made of rubber material with good elasticity and flexibility.

[0072] During the cutting process, the diamond beaded rope 4 rotates at high speed to cut the pipe 2, generating strong vibrations. These vibrations are transmitted through the pipe 2 to the shock-absorbing rubber pad 23 in contact with it. Because the shock-absorbing rubber pad 23 is elastic, it can absorb and disperse some of the vibration energy, converting the vibration into its own elastic deformation, thereby reducing the impact of vibration on other components of the equipment.

[0073] The entire outer surface of the swing-arm underwater diamond wire saw is coated with underwater anti-corrosion paint, including the outer surfaces of components such as the rib plate 1, the swing arm feed device, the drive device, and the large rope pulley 3. The underwater environment contains a large amount of water, salt, microorganisms, and other corrosive media. The underwater anti-corrosion paint forms a dense protective film on the equipment's outer surface, isolating the metal surface from these corrosive media and preventing direct contact between them. This prevents electrochemical corrosion reactions, reduces corrosion, and lowers the frequency of equipment repair and replacement, thus reducing maintenance costs.

[0074] Based on the above embodiments, the inner surface of the V-shaped clamping claw 8 is provided with anti-slip texture, which is wavy or striped, to increase the friction between the V-shaped clamping claw 8 and the pipe 2, prevent the pipe 2 from sliding during the cutting process, and ensure the stability and accuracy of the cutting.

[0075] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0076] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A swing-arm type underwater diamond wire saw, characterized in that, include: Rib (1), the bottom of the rib (1) is provided with a notch, the notch is used to accommodate the pipe (2); A clamping device is provided on the rib plate (1), and the clamping device is used to fix the pipe (2) on the rib plate (1); A large rope pulley (3) is fixed on the rib plate (1); The swing arm feed device is hinged to the rib plate (1). The swing arm feed device can swing towards or away from the pipe (2). The large rope pulley (3) and the swing arm feed device are wound together with a diamond beaded rope (4). The driving device is fixed on the rib plate (1) and is connected to the large rope wheel (3). The rotation of the large rope wheel (3) drives the diamond beaded rope (4) to rotate for cutting.

2. The swing-arm underwater diamond wire saw according to claim 1, characterized in that, The clamping device includes: A swing link (5) is hinged at the middle to the rib plate (1); The first hydraulic cylinder (6) is fixed on the rib plate (1), and the output end of the first hydraulic cylinder (6) is rotatably connected to the swing link (5); The second hydraulic cylinder (7) is fixed on the swing link (5). The output end of the second hydraulic cylinder (7) is connected to the V-shaped clamping claw (8). The extension and retraction of the first hydraulic cylinder (6) realizes the reciprocating swing of the swing link (5). The extension and retraction of the second hydraulic cylinder (7) realizes the extension and retraction of the V-shaped clamping claw (8) to clamp the pipe (2).

3. The swing-arm underwater diamond wire saw machine according to claim 2, characterized in that, The first hydraulic cylinder (6) is threadedly connected to the rib plate (1), and the output end of the first hydraulic cylinder (6) is rotatably connected to the swing link (5) through an ear ring and a pin. The second hydraulic cylinder (7) is threadedly connected to the swing link (5).

4. The swing-arm underwater diamond wire saw according to claim 1, characterized in that, The swing arm feed device includes: The first swing arm (9) has its first end rotatably connected to the rib plate (1) via a swing arm shaft (10); The second swing arm, the first end of the second swing arm is hinged to the second end of the first swing arm (9); The hydraulic cylinder fixing component (11) is fixed on the rib plate (1); The third hydraulic cylinder (12) has one end connected to the hydraulic cylinder fixing part (11) and the other end rotatably connected to the first swing arm (9) through a pin. The extension and retraction of the third hydraulic cylinder (12) can drive the first swing arm (9) to reciprocate. The first small rope wheel (13) and the second small rope wheel (14) are connected to the second end of the first swing arm (9) and the second small rope wheel (14) is connected to the second end of the second swing arm. The first small rope wheel (13), the second small rope wheel (14) and the large rope wheel (3) together wind the diamond beaded rope (4) and drive the diamond beaded rope (4) to rotate and cut.

5. The swing-arm underwater diamond wire saw according to claim 4, characterized in that, A tensioning member for adjusting the tension of the diamond beaded rope (4) is provided between the first swing arm (9) and the second swing arm. The tensioning member includes a tension spring body (15), and tension sleeves (16) are provided on both sides of the tension spring body (15). The tension sleeves (16) on both sides are rotatably connected to the first swing arm (9) and the second swing arm through tension pins (17).

6. The swing-arm underwater diamond wire saw according to claim 4, characterized in that, The driving device includes: A hydraulic motor (18) is connected to the large rope wheel (3) via a rope wheel connecting shaft (19). The large rope wheel (3) is connected to the rib plate (1) via a rope wheel guard plate (20), a rope wheel shaft seat (21), and a rope wheel top sleeve (22).

7. The swing-arm underwater diamond wire saw according to claim 1, characterized in that, A shock-absorbing pad (23) is provided inside the notch of the rib plate (1), and the shock-absorbing pad (23) is in contact with the outer circumferential surface of the pipe (2).

8. The swing-arm underwater diamond wire saw according to claim 1, characterized in that, The outer surface of the swing-arm underwater diamond wire saw is coated with underwater anti-corrosion paint.

9. The swing-arm underwater diamond wire saw according to claim 2, characterized in that, The inner surface of the V-shaped gripper (8) is provided with anti-slip texture.

10. The swing-arm underwater diamond wire saw according to claim 9, characterized in that, The anti-slip texture is wavy or striped.

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