Underwater towed cable emergency shearing device and underwater detection equipment

Abstract

The utility model discloses an underwater towed cable emergency shearing device, relates to underwater detection technical field, including shearing mechanism and driving mechanism, the shearing mechanism includes first blade and second blade, the cutting edge of first blade and the cutting edge of second blade are arranged oppositely, and the driving mechanism is connected with the shearing mechanism. The driving mechanism can drive the first blade and the second blade to be opened and closed. When the driving mechanism drives the first blade and the second blade to open, a space for a dragging cable of underwater detection equipment to pass through is formed between the first blade and the second blade, and when the driving mechanism drives the first blade and the second blade to close, the dragging cable can be sheared. The utility model further discloses underwater detection equipment which comprises the emergency shearing device for the underwater towed cable. According to the utility model, a plurality of shearing actions can be repeatedly completed, so that the dragging cable is ensured to be successfully sheared off.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater detection, in particular to an underwater tow cable emergency shearing device and an underwater detection device. Background Art

[0002] In order to measure marine environmental elements below the sea level, many underwater detection devices need to be lowered to a predetermined depth below the sea level, and the detected marine environmental elements are uploaded to the water surface platform through a tow cable. During the towing process, the underwater detection device sometimes gets caught in a fishing net, collides with a hard object, or is entangled by underwater plants. In the above situations, due to the existence of the tow cable, it will pose a threat to the water surface towing platform, such as making it impossible for a helicopter or a ship to navigate, and even causing the helicopter to crash and the ship to capsize. In order to ensure the safety of the towing platform during the towing process, an emergency shearing device for the tow cable needs to be provided on the retracting and deploying device of the underwater device. When the underwater detection device gets caught in a fishing net, collides with a hard object, or is entangled by underwater plants, the emergency shearing device is automatically or manually activated to disconnect the tow cable and the underwater detection device from the water surface towing platform, thus ensuring the safety of the towing platform.

[0003] In order to ensure the connection between the underwater detection device and the water surface platform, the protective layer of the tow cable usually adopts high-performance materials such as Kevlar, which is composed of many thin synthetic fibers and is difficult to cut off at one time.

[0004] The currently commonly used emergency shearing mechanism for the tow cable is an explosive bolt type, which ignites the explosive charge through an electric igniter and explodes; under the action of the explosion impact force, the shearing screw is cut off, thus completing the shearing action. However, the above-mentioned emergency shearing mechanism for the tow cable has low safety during transportation and storage, and the explosion is likely to damage the equipment, and it can only perform one shearing action. When encountering high-performance materials such as cables with Kevlar, one shearing action cannot ensure complete cutting of the cable.

[0005] Therefore, there is an urgent need to provide a new underwater tow cable emergency shearing device to solve the above problems existing in the prior art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an underwater tow cable emergency shearing device and an underwater detection device to solve the above problems existing in the prior art, and it can repeatedly complete multiple shearing actions, thus ensuring that the tow cable is successfully cut off.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] The utility model provides an underwater towed cable emergency shearing device, which comprises a shearing mechanism and a driving mechanism. The shearing mechanism includes a first blade and a second blade, and the cutting edges of the first blade and the second blade are arranged oppositely. The driving mechanism can drive the first blade and the second blade to open and close. When the driving mechanism drives the first blade and the second blade to open, a space is formed between the first blade and the second blade for the towed cable of the underwater detection device to pass through. When the driving mechanism drives the first blade and the second blade to close, the towed cable can be sheared.

[0009] Preferably, it further includes a base, which is used to be fixed on the device housing of the underwater detection device, and a wire passing hole is formed on the base for the towed cable to pass through, and the shearing mechanism is arranged on the base.

[0010] Preferably, the first blade is fixed on the base, the second blade is rotatably connected to one end of the first blade, and the driving mechanism is connected to the second blade and can drive the second blade to rotate to realize the opening and closing of the first blade and the second blade.

[0011] Preferably, both ends of the first blade are fixed on the base by fixing screws, and the second blade is rotatably connected to the fixing screw at one end of the first blade.

[0012] Preferably, the second blade includes a cutting part, a connecting part and a driving part, and the cutting part is connected to the driving part through the connecting part; wherein, a cutting edge is arranged on the side of the cutting part facing the first blade, the connecting part is rotatably connected to one end of the first blade, and the driving part is used to connect the driving mechanism.

[0013] Preferably, the driving mechanism includes a driving motor, the driving motor is connected with an eccentric wheel through a driving shaft, a slotted hole is arranged on the driving part of the second blade, and the eccentric wheel is arranged in the slotted hole. By driving the eccentric wheel to rotate through the driving motor, the second blade can be driven to rotate to realize the opening and closing of the second blade and the first blade.

[0014] Preferably, the driving motor can be arranged in the device housing of the underwater detection device, and one end of the driving shaft far away from the driving motor extends out of the device housing and is connected with the eccentric wheel. A sealing ring is also arranged between the driving shaft and the device housing;

[0015] An installation groove is formed in the eccentric wheel, and the eccentric wheel is sleeved on the drive shaft through the installation groove. Wherein, both sides of the installation groove are flat surfaces, and both ends of the two flat surfaces are connected by an arc surface. The shape of the connection position between the drive shaft and the eccentric wheel matches that of the installation groove. A baffle is arranged at the end of the drive shaft away from the drive motor, and the baffle is fixed on the drive shaft by screws and is arranged in a fitting manner with the eccentric wheel.

[0016] Preferably, a wire passing groove is further formed in the base, and the wire passing groove is communicated with the wire passing hole for the towing cable to enter the wire passing hole.

[0017] Wherein, an arc-shaped retaining ring is further arranged on one side of the wire passing hole away from the connection position of the first blade and the second blade.

[0018] Preferably, the cutting edges of the first blade and the second blade are both arc-shaped structures.

[0019] The present utility model further provides an underwater detection device, including the underwater towing cable emergency shearing device as described above.

[0020] The present utility model has achieved the following technical effects compared with the prior art:

[0021] The drive mechanism of the present utility model can drive the first blade and the second blade to open and close. When the drive mechanism drives the first blade and the second blade to open, a space for the towing cable of the underwater detection device to pass through is formed between the first blade and the second blade. When the drive mechanism drives the first blade and the second blade to close, the towing cable can be sheared. By driving the first blade and the second blade to open and close repeatedly through the drive mechanism, multiple shearing actions can be completed within the set time, thereby ensuring that the towing cable is successfully cut. Moreover, compared with the existing explosive bolt type emergency shearing mechanism, the explosion risk can be avoided and the safety can be guaranteed. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the underwater towing cable emergency shearing device in the embodiment of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the drive mechanism in the embodiment of the present utility model;

[0025] Figure 3 It is a schematic structural diagram of an eccentric wheel in an embodiment of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of a drive shaft in an embodiment of the present utility model.

[0027] In the figure: 100 - equipment housing, 1 - base, 2 - second blade, 3 - eccentric wheel, 4 - first blade, 5 - arc retaining ring, 6 - drive motor, 7 - drive shaft, 8 - baffle. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0029] The purpose of the present utility model is to provide an underwater towed cable emergency shearing device and an underwater detection device to solve the problems existing in the above-mentioned prior art, and can repeatedly complete multiple shearing actions, thereby ensuring that the towed cable is successfully cut.

[0030] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] As Figures 1-4 shown, this embodiment provides an underwater towed cable emergency shearing device, mainly including a shearing mechanism and a driving mechanism. The shearing mechanism includes a first blade 4 and a second blade 2, and the cutting edges of the first blade 4 and the second blade 2 are arranged opposite to each other. The driving mechanism can drive the first blade 4 and the second blade 2 to open and close. When the driving mechanism drives the first blade 4 and the second blade 2 to open, a space for the towed cable of the underwater detection device to pass through is formed between the first blade 4 and the second blade 2. When the driving mechanism drives the first blade 4 and the second blade 2 to close, the towed cable can be sheared.

[0033] In this embodiment, the driving mechanism can drive the first blade 4 and the second blade 2 to repeatedly open and close, so as to complete multiple shearing actions within the set time, thereby ensuring that the towed cable is successfully cut. Moreover, compared with the existing explosive bolt type emergency shearing mechanism, it can avoid the explosion risk and ensure safety.

[0034] In this embodiment, it further includes a base 1, which is used to be fixed on the device housing 100 of the underwater detection device. A wire passing hole is provided at a position close to the center of the base 1 for the tow cable to pass through. The shearing mechanism is arranged on the base 1. Among them, the first blade 4 is a fixed blade fixed on the base 1, the second blade 2 is a moving blade rotatably connected to one end of the first blade 4, and the driving mechanism is connected to the second blade 2 and can drive the second blade 2 to rotate to realize the opening and closing of the first blade 4 and the second blade 2.

[0035] Further, it should be noted that a shearing mechanism with other structures can also be selected according to work requirements. For example, the shearing mechanism can include two moving blades, and the driving mechanism drives the two moving blades to move together to realize multiple shearing of the tow cable.

[0036] In this embodiment, both ends of the first blade 4 are fixed on the base 1 through fixing screws. The second blade 2 is rotatably connected to the fixing screw at one end of the first blade 4. The driving mechanism can drive the second blade 2 to rotate around the above-mentioned fixing screw, so as to realize the opening and closing of the first blade 4 and the second blade 2. Among them, the second blade 2 mainly includes a cutting part, a connecting part and a driving part. The cutting part is connected to the driving part through the connecting part. A cutting edge is provided on the side of the cutting part facing the first blade 4, and the cutting edge on the first blade 4 is provided on the side facing the second blade 2, so that the two cutting edges can be arranged opposite to each other. When the first blade 4 and the second blade 2 are closed, they can shear the tow cable, and the connecting part is rotatably connected to the fixing screw at one end of the first blade 4, and the driving part is used to connect the driving mechanism.

[0037] In this embodiment, the driving mechanism mainly includes a driving motor 6. The driving motor 6 is connected with an eccentric wheel 3 through a driving shaft 7. A slotted hole is provided on the driving part of the second blade 2, and the eccentric wheel 3 is arranged in the slotted hole. By driving the eccentric wheel 3 to rotate through the driving motor 6, the second blade 2 can be driven to rotate around the corresponding fixing screw to realize the opening and closing of the second blade 2 and the first blade 4. Among them, the slotted hole is preferably a rectangular slot.

[0038] In this embodiment, the driving motor 6 is arranged in the device housing 100 of the underwater detection device, and one end of the driving shaft 7 away from the driving motor 6 extends out of the device housing 100 and is connected to the eccentric wheel 3. A sealing ring is also arranged between the driving shaft 7 and the device housing 100 to improve the waterproof performance.

[0039] In this embodiment, an installation groove is formed in the eccentric wheel 3, and the eccentric wheel 3 is sleeved on the drive shaft 7 through the installation groove. Wherein, both sides of the installation groove are flat surfaces, and both ends of the two flat surfaces are connected by an arc surface. The shape of the connection position between the drive shaft 7 and the eccentric wheel 3 matches that of the installation groove, so that both sides of the drive shaft 7 are in contact with the eccentric wheel 3 through flat surfaces, preventing relative rotation between the two and facilitating the transmission of sufficient torque. Further, a baffle 8 is provided at the end of the drive shaft 7 away from the drive motor 6. The baffle 8 is fixed to the drive shaft 7 by screws and is in contact with the eccentric wheel 3, capable of axially limiting the eccentric wheel 3.

[0040] Further, it should be noted that other drive mechanisms can also be selected according to work requirements, as long as the rotation of the second blade 2 can be driven. For example, a hydraulic rod can be used as the drive mechanism, and the telescopic movement of the hydraulic rod drives the second blade 2 to rotate around the corresponding fixing screw.

[0041] In this embodiment, a wire trough is also formed on one side of the base 1. The wire trough is communicated with the wire passing hole for the tow cable to enter the wire passing hole. Wherein, an arc-shaped retaining ring 5, preferably a semi-circular retaining ring, is provided on one side of the wire passing hole away from the connection between the first blade 4 and the second blade 2, which can prevent the tow cable from being separated from the shearing range of the first blade 4 and the second blade 2 due to the pulling force at different angles of the equipment at the other end and the influence of ocean currents.

[0042] Further, in this embodiment, the cutting edges of the first blade 4 and the second blade 2 are both arc-shaped structures, which can ensure that the tow cable will not be separated from the shearing range of the first blade 4 and the second blade 2 due to the shearing force.

[0043] The usage method of the underwater tow cable emergency shearing device in this embodiment is as follows:

[0044] Fix the base 1 on the equipment housing 100 by screws, fix the drive motor 6 inside the equipment housing 100, fixedly connect one end of the drive shaft 7 to the output shaft of the drive motor 6, and the other end passes through the equipment housing 100. Fix the eccentric wheel 3 on the other end of the drive shaft 7 by screws and the baffle 8, and the eccentric wheel 3 is placed in the rectangular groove on one side of the second blade 2. When the second blade 2 and the first blade 4 are closed, place the tow cable into the wire passing hole of the base 1 through the wire trough on the base 1, and then drive the second blade 2 to rotate through the drive motor 6 to separate it from the first blade 4. When an emergency shearing operation needs to be performed, the drive motor 6 is powered on to drive the drive shaft 7 to rotate, thereby driving the eccentric wheel 3 to rotate around the drive shaft 7. The eccentric wheel 3 drives the second blade 2 to swing around the corresponding fixing screw, so that the second blade 2 and the first blade 4 complete the shearing action.

[0045] This embodiment can complete multiple shearing actions within the set time, thereby ensuring that the dragged cable is successfully cut. Moreover, the structure is reasonably designed, the cost is low, and the working process is stable.

[0046] This embodiment also provides an underwater detection device, including the underwater towed cable emergency shearing device described above.

[0047] Specific examples are used in the present utility model to illustrate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present utility model.

Claims

1. An underwater towing cable emergency shearing device, characterized in that: It includes a shearing mechanism and a driving mechanism, the shearing mechanism includes a first blade and a second blade, the cutting edges of the first blade and the second blade are arranged opposite to each other, and the driving mechanism can drive the first blade and the second blade to open and close; when the driving mechanism drives the first blade and the second blade to open, a space for the towing cable of the underwater detection equipment to pass through is formed between the first blade and the second blade, and when the driving mechanism drives the first blade and the second blade to close, the towing cable can be sheared.

2. The underwater towing cable emergency cutting device according to claim 1, characterized in that: It also includes a base, which is used to be fixed on the equipment housing of the underwater detection equipment, and a wire passing hole is opened on the base for the towing cable to pass through, and the shearing mechanism is arranged on the base.

3. The underwater towing cable emergency cutting device according to claim 2 is characterized in that: The first blade is fixed on the base, the second blade is rotatably connected to one end of the first blade, and the driving mechanism is connected to the second blade and can drive the second blade to rotate to achieve the opening and closing of the first blade and the second blade.

4. The underwater towing cable emergency cutting device according to claim 3 is characterized by: Both ends of the first blade are fixed to the base through fixing screws, and the second blade is rotatably connected to the fixing screw at one end of the first blade.

5. The underwater towing cable emergency cutting device according to claim 3, characterized in that: The second blade includes a cutting part, a connecting part and a driving part, wherein the cutting part is connected to the driving part via the connecting part; wherein a cutting edge is provided on the side of the cutting part facing the first blade, the connecting part is rotatably connected to one end of the first blade, and the driving part is used to connect to the driving mechanism.

6. The underwater towing cable emergency cutting device according to claim 5, characterized in that: The driving mechanism includes a driving motor, which is connected to an eccentric wheel via a driving shaft. A slot is provided on the driving portion of the second blade, and the eccentric wheel is arranged in the slot. The driving motor drives the eccentric wheel to rotate, which can drive the second blade to rotate, so as to realize the opening and closing of the second blade and the first blade.

7. The underwater towing cable emergency cutting device according to claim 6, characterized in that: The drive motor can be arranged in the equipment housing of the underwater detection equipment, and one end of the drive shaft away from the drive motor extends out of the equipment housing and is connected to the eccentric wheel, and a sealing ring is also arranged between the drive shaft and the equipment housing; The eccentric wheel is provided with a mounting groove, and the eccentric wheel is sleeved on the driving shaft through the mounting groove; wherein, the two sides of the mounting groove are planes, and the two ends of the planes on the two sides are connected by arc surfaces, and the shape of the connection position between the driving shaft and the eccentric wheel matches the mounting groove; a baffle is provided at one end of the driving shaft away from the driving motor, and the baffle is fixed to the driving shaft by screws and is arranged in a fit with the eccentric wheel.

8. The underwater towing cable emergency cutting device according to claim 3, characterized in that: The base is also provided with a wire groove, which is connected with the wire hole and is used for allowing the towing cable to enter the wire hole; Wherein, an arc-shaped retaining ring is further provided on one side of the wire-passing hole away from the connection between the first blade and the second blade.

9. The underwater towing cable emergency cutting device according to claim 1, characterized in that: The cutting edges of the first blade and the second blade are both arc-shaped structures.

10. An underwater detection device, characterized in that: It comprises an underwater towing cable emergency cutting device as described in any one of claims 1-9.

Images