ROV underwater special cutting knife

Abstract

The ROV underwater special cutting knife comprises a cutting knife body and a handle, one end of the handle is connected to the cutting knife body, the end, away from the cutting knife body, of the handle is connected with a mechanical gripper, the mechanical gripper drives the cutting knife body to move, and the end, away from the handle, of the cutting knife body is provided with a hook head. The end, away from the cutting edge, of the cutting knife body is fixedly connected with a blade through a bolt. According to the underwater special cutting knife for the ROV provided by the invention, a found fishing net and a rope can be timely cleaned in the shallow water operation process of the ROV through the cutting edge of the cutting knife body, so that the risk that the ROV is wound underwater is greatly reduced; the cutting edge of the cutting knife body and the blade jointly cut off a temporary sling or a fixing bandage in the deepwater operation process, the efficiency of cutting off the temporary sling or the fixing bandage underwater is greatly improved, and the project operation time is effectively shortened.

Description

Technical Field

[0001] The invention belongs to the field of ROV underwater operation, and in particular relates to a special cutting knife for ROV underwater. Background Art

[0002] ROV underwater operations have gradually moved from shallow water operations to deep water operations (usually with a water depth of 300 meters as the dividing line). Due to the rich fish resources and frequent fishing boat activities in the shallow water operation area, there are many abandoned fishing nets and floating ropes left underwater.

[0003] When operating in shallow water, abandoned fishing nets and ropes can easily be sucked into the ROV thrusters and become entangled with the ROV due to their softness and high tensile strength, causing the ROV to freeze underwater and be unable to be recovered normally, which in turn leads to an extension of the project schedule.

[0004] Temporary slings and fixing straps are often needed during the installation of structures in deepwater operation areas. After the structure is installed in place, ROV is required to cut off the temporary slings or fixing straps.

[0005] Therefore, it is urgent to design a special underwater cutting knife for ROV to solve the above-mentioned problem of cutting fishing nets, ropes, slings or fixed straps. Summary of the invention

[0006] In order to solve the technical problems mentioned in the background technology that abandoned fishing nets and ropes are easily sucked into the ROV thruster and entangled with the ROV, and temporary slings or fixing straps are cut off, an ROV underwater special cutting knife is provided to solve the problem of cutting fishing nets, ropes, slings or fixing straps.

[0007] To achieve the above purpose, the specific technical solution of the ROV underwater special cutting knife of the present invention is as follows: The utility model discloses a special underwater cutting knife for ROV, comprising a cutting knife body and a handle, wherein one end of the handle is connected to the cutting knife body, and the end of the handle away from the cutting knife body is connected to a mechanical grip, and the mechanical grip drives the cutting knife body to move; a hook is arranged at the end of the cutting knife body away from the handle, and a blade is arranged along one side of an opening of the hook of the cutting knife body; and a blade is fixedly connected to the end of the cutting knife body away from the blade by bolts.

[0008] Furthermore, the bolts include a first bolt and a second bolt, and corresponding threaded interfaces are provided on the blade and the cutting knife body at intervals, and the first bolt and the second bolt are respectively threaded in the threaded interfaces to fix the blade on the cutting knife body.

[0009] Furthermore, the handle includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are welded to each other, and one end of the first connecting rod and the second connecting rod are both connected to the cutting knife body.

[0010] Furthermore, the cutting blade body is J-shaped, and the first connecting rod and the second connecting rod are connected to the flat bottom end of the cutting blade body.

[0011] Furthermore, a blade is provided on the inner side of the hook end of the cutting knife body, and the blade on the inner side of the hook end is connected with the blade of the cutting knife body.

[0012] Furthermore, one end of the first connecting rod and the second connecting rod are welded to the cutting blade body at intervals.

[0013] Further, the cutting edge of the blade is parallel to the cutting knife body.

[0014] Furthermore, a connecting block is provided on the cutting knife body, and a first connecting rod and a second connecting rod are welded on the connecting block.

[0015] Furthermore, the handle is arranged in a fishtail shape.

[0016] Furthermore, the blade is arranged in a straight shape.

[0017] The ROV underwater special cutting knife of the present invention has the following advantages: The blade of the cutting knife body can timely clean the fishing nets and ropes found during ROV shallow water operations, greatly reducing the risk of ROV being entangled underwater. The blade is connected to the back of the cutting knife body, so that the blade of the cutting knife body and the blade can jointly cut off the temporary slings or fixed straps during deep water operations, greatly improving the efficiency of underwater removal of temporary slings and fixed straps, and effectively reducing project operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a preferred embodiment 1 of the ROV underwater special cutting knife of the present invention; Figure 2 This is a schematic structural diagram of a preferred embodiment 2 of the ROV underwater special cutting knife of the present invention.

[0019] Description of the markings in the figure: 1. Cutting knife body; 2. Handle; 21. First connecting rod; 22. Second connecting rod; 3. Hook head; 4. Blade; 5. First bolt; 6. Second bolt; 7. Blade; 8. Connecting block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0022] Please refer to the attached Figure 1 To Attachment Figure 2 The invention describes an ROV underwater special cutting knife.

[0023] like Figure 1 As shown, the ROV underwater special cutting knife in the present invention includes a cutting knife body 1 and a handle 2, one end of the handle 2 is connected to the cutting knife body 1, and the end of the handle 2 away from the cutting knife body 1 is connected to a mechanical grip, and the mechanical grip drives the cutting knife body 1 to move, and the end of the cutting knife body 1 away from the handle 2 is provided with a hook head 3, and the cutting knife body 1 is provided with a blade 4 along the opening side of the hook head 3, and the end of the cutting knife body 1 away from the blade 4 is fixedly connected with a blade 7 by bolts. The blade 4 of the cutting knife body 1 can timely clean the fishing nets and ropes found during the shallow water operation of the ROV, greatly reducing the risk of the ROV being entangled underwater, and the blade 7 is connected to the back of the cutting knife body 1, so that the blade 4 of the cutting knife body 1 and the blade 7 can jointly cut off the temporary slings or fixed straps during the deep water operation, greatly improving the efficiency of underwater removal of temporary slings and fixed straps, and effectively reducing the project operation time.

[0024] Further, if Figure 1 and Figure 2 As shown, the bolts include a first bolt 5 and a second bolt 6, and corresponding screw interfaces are provided on the blade 7 and the cutting knife body 1 at intervals, and the first bolt 5 and the second bolt 6 are respectively screwed in the screw interfaces to fix the blade 7 on the cutting knife body 1; the handle 2 includes a first connecting rod 21 and a second connecting rod 22, and the first connecting rod 21 and the second connecting rod 22 are welded to each other, and one end of the first connecting rod 21 and the second connecting rod 22 are both connected to the cutting knife body 1; the cutting knife body 1 is J-shaped, and the first connecting rod 21 and the second connecting rod 22 are connected to the flat bottom end of the cutting knife body 1.

[0025] In this embodiment, preferably, the first bolt 21 and the second bolt 21 are bolts of the same size, screw holes are provided at intervals on the blade 7, and corresponding screw holes are provided on the cutting knife body 1. The blade 7 abuts against the cutting knife body 1, and the first bolt 21 and the second bolt 22 are respectively inserted into the screw holes of the blade 7 and the cutting knife body 1 in turn, so that the blade 7 is fixed to the cutting knife body 1.

[0026] In the preferred embodiment 1, the handle is composed of a first connecting rod 21 and a second connecting rod 22, both of which are N-shaped, and are welded together. One end of the first connecting rod 21 and the second connecting rod 22 are welded to one end of the cutting knife body 1 to form a double-edged special cutting knife.

[0027] In the preferred embodiment 2, the handle 2 is arranged in a T shape, and the T-shaped handle is vertically welded on the cutting knife body 1 to form a T-handle type special cutting knife. The design size of the T-shaped handle matches the gap size after the T4 hand flat jaws are kneaded. The contact area between the T-shaped handle and the flat jaws is larger, and the cutting process is deeper, which highlights the advantage when the cutting task is heavy.

[0028] Preferably, the cutting blade body 1 is J-shaped, and the first connecting rod 21 and the second connecting rod 21 or the T-shaped handle are vertically welded to the flat bottom end of the cutting blade body 1 .

[0029] Further, if Figure 1 As shown, a blade 4 is provided on the inner side of the hook head 3 end of the cutting knife body 1, and the inner blade of the hook head 3 is connected to the blade 4 of the cutting knife body 1; one end of the first connecting rod 21 and the second connecting rod 21 are welded to the cutting knife body 1 at intervals; the blade 7 is parallel to the cutting knife body 1.

[0030] In this embodiment, a blade 4 is provided on the inner side of the hook head 3 of the cutting knife body 1. Preferably, the cutting knife body 1 uses 8 mm 316 stainless steel plate to ensure that the blade has sufficient bending resistance while the overall weight of the blade does not exceed the standard, can produce a sharp blade, and has the ability to resist seawater corrosion; the first connecting rod 21 and the second connecting rod 22 are welded on the cutting knife body 1 at intervals.

[0031] Preferably, the blade of the blade 7 is arranged parallel to the cutting knife body 1, and the operator can more easily replace the blade 7 fixed by the first bolt 5 and the second bolt 6 through operation T4, and can also conveniently replace the blade 7 after the blade edge is bent.

[0032] Further, if Figure 1 As shown, a connecting block 8 is provided on the cutting knife body 1, and a first connecting rod 21 and a second connecting rod 22 are welded on the connecting block 8; the handle 2 is arranged in a fishtail shape; and the blade 7 is arranged in a straight mouth shape.

[0033] In the present embodiment, preferably, a connecting block 8 is provided at one end of the cutting knife body 1 away from the hook head 3, and one end of the first connecting rod 21 and the second connecting rod 22 are vertically welded to the connecting block 8; the total length of the cutting knife body 1 is controlled within 600 mm. This length setting can ensure that the ROV underwater special cutting knife is easy to carry by the ROV, and at the same time has the ability to cut soft slings and fishing nets of various sizes.

[0034] The fishtail handle 2 ensures that the T4 manipulator can firmly grasp the ROV knife handle for underwater cutting operations, and when the ROV knife is subjected to external force, there will be no misalignment between the T4 manipulator hand grip and the ROV knife handle.

[0035] The working principle and advantages of the ROV underwater special cutting knife in the present invention are as follows: When ROV is installing structures close to the seabed underwater, in addition to cutting the slings, etc., ROV is often required to cut the fasteners on the dust cover for temporary protection, which are mostly nylon ropes or fastening belts. When cutting such fasteners, the space is usually small and it is not easy to cut, and the blade is easy to curl when cutting close to the structure. A straight blade 7 is added to the back of the blade. The operator can more easily change the cutting angle to cut the fasteners by operating T4, and can also easily replace the blade after the blade curls. For underwater cutting tasks with many cutting points and a long cutting time, the T4 is often equipped with a flat-claw manipulator and a T-handle cutting knife is used for cutting. The design size of the T-handle matches the gap size after the T4 hand flat claws are kneaded. The contact area between the T-handle and the flat claw is larger, and the cutting process is deeper, which highlights the advantage when the cutting task is heavy.

[0036] Based on the ROV underwater special cutting knife, the present invention can timely clean the fishing nets and ropes found during the ROV shallow water operation through the cutting knife body 1 and the blade 4, which greatly reduces the risk of the ROV being entangled underwater. The cutting knife body 1 is connected to the blade 7 at the back of the knife, so that the cutting knife body 1 The blade 4 and the blade 7 of the cutting knife body 1 can jointly cut off the temporary slings or fixing straps during the deep water operation, which greatly improves the efficiency of underwater removal of temporary slings and fixing straps and effectively reduces the project operation time.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A special underwater cutting knife for ROV, characterized in that: The utility model comprises a cutting knife body and a handle, wherein one end of the handle is connected to the cutting knife body, and the end of the handle away from the cutting knife body is connected to a mechanical grip, and the mechanical grip drives the cutting knife body to move; a hook head is provided at the end of the cutting knife body away from the handle, and a blade is provided along one side of the hook head opening of the cutting knife body; and a blade is fixedly connected to the end of the cutting knife body away from the blade by bolts.

2. The ROV underwater special cutting knife according to claim 1, characterized in that: The bolts include a first bolt and a second bolt. The blade and the cutting knife body are both provided with corresponding threaded interfaces at intervals. The first bolt and the second bolt are respectively threaded in the threaded interfaces to fix the blade on the cutting knife body.

3. The ROV underwater special cutting knife according to claim 1, characterized in that: The handle comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are welded and connected, and one end of the first connecting rod and the second connecting rod are both connected to the cutting knife body.

4. The ROV underwater special cutting knife according to claim 3, characterized in that: The cutting knife body is J-shaped, and the first connecting rod and the second connecting rod are connected to the flat bottom end of the cutting knife body.

5. The ROV underwater special cutting knife according to claim 4, characterized in that: A blade is arranged on the inner side of the hook head end of the cutting knife body, and the blade on the inner side of the hook head is communicated with the blade of the cutting knife body.

6. The ROV underwater special cutting knife according to claim 3, characterized in that: One ends of the first connecting rod and the second connecting rod are welded to the cutting knife body at intervals.

7. The ROV underwater special cutting knife according to claim 2, characterized in that: The cutting edge of the blade is parallel to the cutting knife body.

8. The ROV underwater special cutting knife according to claim 6, characterized in that: A connecting block is arranged on the cutting knife body, and a first connecting rod and a second connecting rod are welded on the connecting block.

9. The ROV underwater special cutting knife according to claim 3, characterized in that: The handle is set in a fishtail shape.

10. The ROV underwater special cutting knife according to claim 2, characterized in that: The blade is set in a straight shape.

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