Deep sea suspended cable cutting device

Abstract

The utility model discloses a kind of deep-sea suspension cable cutting device, pressure-resistant shell, working part, fuze system and power supply are set in pressure-resistant shell;Anchor cable fixing mechanism, set in one end of pressure-resistant shell close to working part, for cutting device and the relative anchoring of the cutting rope system to be cut;Release separation mechanism, set in one end of pressure-resistant shell opposite anchor cable fixing mechanism, for cutting device and the quick separation of carrying platform. Mainly by anchor cable fixing mechanism and suspension rope system are relatively fixed, ensure the stability of the attitude when working part works cutting, prevent deflection, to achieve the purpose of accurate cutting, and release separation mechanism can make device quick and carrying platform separate, improve work efficiency, pressure-resistant shell mainly play pressure-bearing role, ensure that overall can normally work underwater. Overall modular design is adopted, reduce assembly difficulty, maintenance difficulty, while improving support capability. Structural component uses integrated design, reduces the number of parts and assembly steps.

Description

Technical Field

[0001] This utility model belongs to the field of underwater operation equipment, specifically relating to a deep-sea suspended cable cutting device. Background Technology

[0002] With the advancement of deep-sea resource development and the construction of cross-sea passages, suspended cables, as core components of deep-sea suspended tunnels, mooring systems, and observation networks, are finding increasingly widespread applications. Suspended cables are typically constructed from high-strength composite materials, metal armor layers, and protective structures, and must withstand high deep-sea pressure, ocean currents, corrosion, and dynamic fatigue loads. However, when these cables need to be cut due to aging, failure, or engineering modifications, traditional underwater cutting techniques face numerous challenges.

[0003] For example, insufficient environmental adaptability, low visibility and complex currents in the deep sea make conventional cutting equipment prone to mechanical failures (such as seal failure and insufficient power); low cutting precision and efficiency, as suspended cables are mostly multi-layered composite structures (such as steel cable + polymer protective layer + fiber optic sensing unit), and existing mechanical cutting devices (such as hydraulic chainsaws and blade cutters) cannot process different material layers simultaneously, easily causing uneven cuts and damage to internal components. In addition, the time window for deep-sea operations is limited, and the cutting speed of traditional methods is insufficient to meet the needs of engineering efficiency; dynamic load and safety risks, as suspended cables are still subject to ocean current traction and their own residual tension during cutting, and existing technologies lack real-time dynamic load sensing and compensation mechanisms, which can easily lead to the risk of uncontrolled cable swinging or breakage during the cutting process.

[0004] Therefore, it is urgent to optimize existing cutting equipment to further improve the reliability, safety, and efficiency of cutting operations. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a deep-sea suspended cable cutting device to solve the problems of poor reliability and safety and slow efficiency of existing equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A deep-sea suspended cable cutting device, the key of which includes: A pressure-resistant housing, wherein a working part, a fuze system and a power supply are disposed within the pressure-resistant housing; An anchor cable fixing mechanism is set on one end of the pressure-resistant shell near the working part, and is used to anchor the cutting device relative to the cable system to be cut. The separation mechanism is located on the pressure-resistant shell at the end opposite to the anchor cable fixing mechanism, and is used to quickly separate the cutting device from the mounting platform.

[0007] Using the above scheme, the anchor cable fixing mechanism and the suspension cable system are relatively fixed during use to ensure the stability of the working part's posture during cutting and prevent deviation, thereby achieving the purpose of precise cutting. The release and separation mechanism can quickly separate the device from the mounting platform, improving work efficiency. The pressure-resistant shell mainly plays a pressure-bearing role, ensuring that the whole can work normally underwater.

[0008] Preferably, the anchor cable fixing mechanism includes an anchoring groove, and a door plate and a stop corresponding to the anchoring groove. Initially, the anchoring groove is open at both axial ends and on one radial side. When the stop is pressed and rotates inward, the door plate slides to close the radial opening of the anchoring groove. This design simplifies the cutting process, facilitates implementation, and reduces costs.

[0009] Preferably, the anchor cable fixing mechanism includes a mounting box and a mounting plate fixedly connected to the pressure-resistant shell. One end of the mounting box is open, and the mounting plate faces the open end of the mounting box. The opposite portions of the mounting box and the mounting plate together form the anchoring groove. The mounting box has a sliding groove that slides with the door panel. The door panel is equipped with a door panel tension spring. The two ends of the door panel tension spring are fixed to the mounting box and the door panel respectively. The door panel has a tendency to slide towards the mounting plate. The stop is rotatably mounted on the mounting plate and abuts against the outer end of the door panel.

[0010] The above approach facilitates modular installation, reduces assembly and maintenance difficulties, and enhances reliability. The structural components are mostly designed as integrated units, reducing the number of parts and assembly steps.

[0011] Preferably, the stop is equipped with a safety pin, and the mounting box has a corresponding pin hole. When the stop abuts against the door panel, the stop is fixed to the mounting box by the safety pin. This design improves reliability and prevents accidental contact with the stop, which could cause it to rotate and close the anchoring groove of the door panel.

[0012] Preferably, the outer end of the door panel has a stop step, and the mounting plate has a snap-fit ​​that adapts to the stop step. This design further ensures the reliability of the stop's stopping effect and, on the other hand, the reliability of the door panel's closed anchoring groove.

[0013] Preferably, the mounting plate has a right guide section, and the mounting box has a left guide section, which are arranged in a figure-eight shape. This design provides guidance, making it easier for the anchoring groove and the suspension cable system to align and engage.

[0014] Preferably, the stop member is equipped with a magnet, and the pressure-resistant housing has a matching anchoring mechanism locking sensor. When the cable to be cut enters the anchoring groove, the magnet rotates with the stop member toward the pressure-resistant housing, approaching and triggering the anchoring mechanism locking sensor. Using this solution, once the suspended cable enters the anchoring groove, the magnet and the anchoring mechanism locking sensor can detect that the cable has been locked, allowing the entire device to be powered on and put into standby mode. Simultaneously, the separation action can be initiated to achieve separation from the mounting platform.

[0015] Preferably, the release mechanism includes a ignition actuator, a release sleeve, and a fixing frame. The ignition actuator is fixed to the pressure-resistant housing, and the release sleeve is fixed relative to the actuating rod of the ignition actuator via a steel ball. The fixed frame is fixedly connected to the release sleeve, and a release spring is fitted onto the release sleeve. The two ends of the release spring abut against the pressure-resistant housing and the fixed frame, respectively. The use of a movable steel ball connection method allows for easier separation of the fire-operated actuator in conjunction with the release spring. The structure is ingenious, easy to implement, and stable and reliable.

[0016] Preferably, the fixing frame and the release sleeve are detachably connected; The actuating rod has a steel ball groove, and the outer side of the pressure-resistant shell has a cylindrical part corresponding to the position of the ignition actuator. The cylindrical part has evenly distributed ball holes, and each ball hole contains a steel ball. The end of the release sleeve near the pressure-resistant shell has an inwardly protruding anti-detachment part. In the initial state, the steel ball groove is relatively far away from the steel ball. When the ignition actuator is activated, the actuating rod moves outward, and the steel ball slides into the steel ball groove. The fixing frame and the release sleeve disengage from the actuating rod under the action of the release spring.

[0017] Preferably, the pressure-resistant shell has a buoyancy module, and the cutting device is a zero-buoyancy body. Adopting a zero-buoyancy or near-zero-buoyancy design helps ensure the stability of the device's attitude after it is anchored to the suspension cable system, reduces skewing, and helps ensure the consistency and accuracy of the explosive jet's exit direction, thereby guaranteeing a good cutting effect.

[0018] Compared with the prior art, the beneficial effects of this utility model are: The deep-sea suspended cable cutting device provided by this utility model is mainly fixed to the suspended cable system by the anchor cable fixing mechanism to ensure the stability of the working part's posture during cutting and prevent deviation, thereby achieving the purpose of precise cutting. The release and separation mechanism can quickly separate the device from the mounting platform, improving work efficiency. The pressure-resistant shell mainly plays a pressure-bearing role to ensure that the whole can work normally underwater.

[0019] The overall design adopts a modular approach to reduce assembly and maintenance difficulties while enhancing reliability. Many structural components utilize an integrated design, reducing the number of parts and assembly steps. The hardware circuitry employs a modular design to reduce design complexity and minimize design error rates. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present utility model; Figure 2 for Figure 1 Sectional view; Figure 3 for Figure 2 Enlarged view of a section at point A in the middle; Figure 4 for Figure 2 Enlarged view of a section at point B in the middle; Figure 5 This is a schematic diagram of the external structure of the pressure-resistant housing; Figure 6 This is a schematic diagram of the internal structure of the pressure-resistant shell; Figure 7 This is a schematic diagram of the anchor cable fixing mechanism; Figure 8 A 3D view of the work area; Figure 9 for Figure 8 Sectional view; Figure 10 This is a schematic diagram of the workflow of this utility model; Figure 11 This is a schematic diagram of the fuse system; Figure 12 This is a schematic diagram of the components of the safety release device; Figure 13 This is a schematic diagram of the detonation controller components; Figure 14 This is a schematic diagram showing the composition and operation of an inline detonator. Figure 15 A schematic diagram of the anchor cable fixing mechanism as the target cable system enters the anchoring groove; Figure 16 This is a simulation calculation diagram of cutting a cable system with a diameter of 40mm using this device; Figure 17 This is a simulation calculation diagram of cutting a cable system with a diameter of 50mm using this device. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] refer to Figures 1 to 17The deep-sea suspended cable cutting device shown mainly includes a pressure-resistant shell 100, an anchor cable fixing mechanism 500, and a release and separation mechanism 600. The pressure-resistant shell 100 houses a working section 200, a fuse system 300, and a power supply 400. The power supply 400 mainly supplies power to the entire device. The fuse system 300 is mainly used to detonate the working section 200 and includes a safety release device 310, a detonation controller 320, and an inline detonator 330. The safety release device 310 is mainly used to prevent the fuse from activating under conditions other than receiving an underwater acoustic remote detonation command or the expiration of the delayed detonation time, ensuring the safety of personnel and equipment. The detonation controller 320 is used to receive underwater acoustic remote control commands, delay detonation timing, detect and set parameters, manage power, and control the charging and detonation of the inline detonator 330. The inline detonator 330 is used to receive the control signal from the detonation controller 320, complete energy conversion, and ultimately trigger the charging of the working section.

[0023] Anchor cable fixing mechanism 500 is located on the pressure-resistant housing 100 near the working part 200 and is used to anchor the cutting device relative to the cable system to be cut; release and separation mechanism 600 is located on the pressure-resistant housing 100 opposite to the anchor cable fixing mechanism 500 and is mainly used to quickly separate the cutting device from the mounting platform.

[0024] As shown in the figure, the anchor cable fixing mechanism 500 includes an anchoring groove 510, a door plate 520 and a stop 530 corresponding to the anchoring groove 510. In the initial state, the two ends of the axial direction and one side of the anchoring groove 510 are open. When the stop 530 is pressed and rotates inward, the door plate 520 slides to close the radial opening side of the anchoring groove 510.

[0025] Specifically, the anchor cable fixing mechanism 500 includes a mounting box 540 and a mounting plate 550 fixedly connected to the pressure-resistant housing 100. The two are installed facing each other, and the mounting box 540 is open at one end facing the mounting plate 550. The opposing parts of the mounting box 540 and the mounting plate 550 enclose each other to form an anchoring groove 510. The cross-section of the anchoring groove 510 is generally "n" shaped. In this embodiment, the mounting box 540 and the mounting plate 550 adopt a split structure and are independently installed on the pressure-resistant housing 100, which is beneficial to improve the disassembly and assembly efficiency and can also reduce the processing and assembly difficulty of the internal structure.

[0026] The mounting box 540 has a sliding groove 541 that slides with the door panel 520. In this embodiment, it is used as follows: Figure 2 and Figure 3For reference, the slide groove 541 is located on the inner bottom of the mounting box 540, that is, on the side away from the pressure-resistant housing 100. The door panel 520 is equipped with a door panel tension spring 521. The two ends of the door panel tension spring 521 are respectively fixed to the mounting box 540 and the door panel 520. In specific implementation, the door panel tension spring 521 is initially tilted, with one end hooked on the end of the door panel 520 away from the mounting plate 550, and the other end hooked on the upper side of the open end of the mounting box 540. The upper end of the stop 530 is directly mounted on the mounting plate 550 through a pivot.

[0027] Under the action of the door panel tension spring 521, the door panel 520 tends to slide towards the mounting plate 550. The stop member 530 is rotatably mounted on the mounting plate 550 and abuts against the outer end of the door panel 520 (i.e. the end near the mounting plate 550) to prevent the door panel 520 from sliding outward.

[0028] As shown in the figure, the outer end of the door panel 520 has a stop step 522, and the end of the stop member 530 has an abutment portion that adapts to the stop step 522. Both of them adopt rounded chamfers to ensure that the stop member 530 can pass over the stop step 522 when subjected to inward pressure. At the same time, the mounting plate 550 has a latch 551 that adapts to the stop step 522. The latch 551 is set directly opposite to the door panel 520. When the door panel 520 slides outward, the stop step 522 can just engage with the latch 551, which plays a certain limiting role and keeps the door closed.

[0029] In this embodiment, to improve the safety of the device, the stop 530 is equipped with a safety pin 531, and the mounting box 540 has a corresponding pin hole. When the stop 530 abuts against the door panel 520, the stop 530 is fixed relative to the mounting box 540 by the safety pin 531, which can prevent accidental contact with the door panel 520 and the situation of it rotating inward.

[0030] In addition, the mounting plate 550 is provided with a right guide part 552, and the mounting box 540 is provided with a left guide part 542. The right guide part 552 and the left guide part 542 are arranged in a figure-eight shape.

[0031] refer to Figure 2 , Figure 4 and Figure 5 The release mechanism 600 mainly includes a ignition actuator 610, a release sleeve 620, and a fixing frame 630. The ignition actuator 610 is fixed to the pressure-resistant housing 100. The release sleeve 620 is fixed relative to the actuating rod 611 of the ignition actuator 610 via steel balls 640. The fixing frame 630 is fixedly connected to the release sleeve 620. A release spring 650 is sleeved on the release sleeve 620. The two ends of the release spring 650 abut against the pressure-resistant housing 100 and the fixing frame 630, respectively. The fixing frame 630 is mainly used for connection and fixation to the mounting platform.

[0032] Specifically, the fixing frame 630 and the release sleeve 620 are detachably connected, in this embodiment by screw connection. The actuating rod 611 has a steel ball groove 612, which is evenly distributed around the circumference of the actuating rod 611. The outer side of the pressure-resistant housing 100 has a cylindrical part 111 corresponding to the position of the fire-working actuator 610. The cylindrical part 111 has evenly distributed ball holes 1110, and each ball hole 1110 contains a steel ball 640. The end of the release sleeve 620 near the pressure-resistant housing 100 has an inwardly radially protruding anti-detachment part 621. In the initial state (such as... Figure 2 and Figure 4 As shown), the steel ball groove 612 is relatively far away from the steel ball 640 and is located below the steel ball 640. The steel ball 640 is partially located inside the ball hole 1110 and partially located outside the ball hole 1110 and abuts against the anti-detachment part 621, thereby fixing the release sleeve 620 relative to the cylindrical part 111. When the ignition actuator 610 is activated, the actuating rod 611 moves outward under the action of high pressure gas. When the steel ball groove 612 is directly opposite the steel ball 640, the steel ball 640 slides into the steel ball groove 612, the anti-detachment part 621 is not blocked, and the fixing bracket 630 and the release sleeve 620 are disengaged from the actuating rod 611 under the action of the release spring 650.

[0033] It should be noted that, in order to improve installation efficiency and reduce processing difficulty, the pressure-resistant shell 100 in this application is cylindrical in shape and adopts a split structure, as shown in the figure. It includes a cylindrical body 110 with a generally columnar structure and an end cap 120. The end cap 120 is sealed to the cylindrical body 110. At the same time, the whole adopts a zero buoyancy design, that is, the buoyancy of the whole in seawater is close to zero. For this purpose, a buoyancy module 700 is provided on the pressure-resistant shell 100. As shown in the figure, the buoyancy module 700 is also divided into upper and lower parts, which respectively cover the end cap 120 and the cylindrical body 110, and are directly fixed by the flange connection structure between the cylindrical body 110 and the end cap 120.

[0034] In this embodiment, the pressure-resistant shell 100 is mainly supported by titanium alloy, which has good pressure resistance, heat resistance, water resistance, salt spray resistance, and damp heat resistance. The buoyancy module 700 is made of glass microspheres with a density of 0.59±0.01 g / cm³. 3 It has high water pressure resistance, between 60-80MPa, which fully ensures that it can still provide buoyancy normally in deep water.

[0035] Based on the split structure of the pressure-resistant housing 100, in this embodiment, the release and separation mechanism 600 is centrally installed on the end cover 120, which is conducive to further modular installation. A radial sealing structure is provided between the fire-working actuator 610 and the end cover 120.

[0036] Main reference Figure 2 , Figure 8 and Figure 9 The working part 200 is fixed inside the pressure-resistant housing 100 and arranged along its axial direction. It includes a working part housing 210 with a hollow columnar structure, as shown in the figure. In this embodiment, the working part 200 has a rectangular columnar structure with one end open as a loading port and equipped with a cap 220. The main charge 250 is loaded into it through the loading port. The working part housing 210 has a shaped charge 230 arranged along its length. The shaped charge 230 is conical with a cone angle α of 60°-80°. In this embodiment, the shaped charge 230 is preferably made of copper with a cone angle of 80° and a wall thickness of 3mm. In addition, the opening of the shaped charge 230 has a folded part 231. The back side of the folded part 231 has an arc-shaped structure and is attached to the corner of the working part housing 210. This structure can ensure that no air holes are generated during the loading process, improve the loading quality, and at the same time achieve a better shaped charge fixing effect.

[0037] Furthermore, the working part housing 210 has a clearance window 211 at the center of the shaped charge liner 230, which can effectively avoid obstruction of the jet. The cover 220 and the clearance window 211 are located on opposite sides of the working part housing 210, and the detonating charge 240 is provided on them. The pressure-resistant housing 100 has at least one inner ring boss 130, which is used for positioning and installing the working part 200.

[0038] In this embodiment, the power supply 400 is a battery pack composed of CR2 lithium-manganese dioxide (Li-MnO2) single cells. In specific implementation, the battery pack uses three single cells connected in series to output V. O1 This output supplies power to the detonation device and detonation controller, using two individual batteries connected in series to output V. O2 This output supplies power to the inline detonator.

[0039] In addition, the end cap 120 is equipped with a water pressure sensor 121, an underwater acoustic communication interface 122, and a detection preset port 123. The security release device 310 mainly includes a power-on control module and a water pressure control module. The water pressure control module is mainly composed of a water pressure sensor 121 and a filter amplification circuit. The detonation controller 320 mainly includes a detonation timing module, an inline detonator interface, a microcontroller, a power management module, an underwater acoustic communication signal module, and a detection preset module. The inline detonator 330 is connected to the detonation controller 320 through the inline detonator interface. The underwater acoustic communication signal module and the detection preset module are respectively connected to the underwater acoustic communication interface 122 and the detection preset port 123. The security release device 310 is electrically connected to the detonation controller 320 and the inline detonator 330, and is also communicatively connected to the detonation controller 320. In this embodiment, the detection preset port 123 can be used not only for internal component detection but also for internal airtightness detection.

[0040] like Figure 13 As shown, the detonation timing module uses an RTC as a timer, and a parameter memory provides delay duration data. The charging signal drive circuit and the detonation signal drive circuit drive the connected inline detonator. The underwater acoustic communication signal module, the detection preset module, and the inline detonator interface are used to connect to external underwater acoustic communication equipment, the detection preset device, and the inline detonator, respectively. The power management system provides power distribution for the entire detonation controller, and the microcontroller controls the aforementioned components.

[0041] The power-on control module mainly includes an anchoring mechanism locking sensor and a third drive circuit, which are mainly integrated on the power-on control circuit board 311, as shown in the figure. The power-on control circuit board is installed inside the pressure-resistant housing 100 near one end of the anchor cable fixing mechanism 500. At the same time, a magnet 532 is provided on the stop 530. The top of the mounting box 540 has an exposed hole 543 directly opposite the power-on control circuit board 311, which allows the magnet 532 to approach the power-on control circuit board 311. When the cable to be cut enters the anchoring groove 510, the magnet 532 rotates with the stop 530 toward the pressure-resistant housing 100. The magnet 532 enters the exposed hole 543, approaches and triggers the anchoring mechanism locking sensor, thereby turning on the third drive circuit, and thus realizing the overall power-on of the device. The anchoring mechanism locking sensor is usually a Hall sensor.

[0042] like Figure 12 As shown, the disengagement device contains two isolation devices: INT1 and INT2, implemented by one P-MOSFET and one N-MOSFET. When the anchoring mechanism locking sensor detects the anchoring action, it sends a signal to drive circuit three, which then drives SW1 and SW2 to close, powering on the device. Next, the water pressure control module enables DC / DC2, actuating the ignition actuator in the disengagement mechanism, separating the entire device from the mounting platform. The first safety device, INT1, is then released, and a 5-minute safety delay, Ts1, begins. After the safety delay Ts1 completes, the water pressure control module continuously measures the water depth. When the water depth exceeds 50m, the second safety device, INT2, is released. Finally, the detonation controller, LDO2, is enabled, and the detonation controller begins timing according to the set safety delay Ts2.

[0043] like Figure 14 As shown, in this embodiment, the inline detonator 330 mainly consists of a high-voltage module and an explosive foil detonator. Under external excitation and power supply, the high-voltage module boosts the low-voltage DC to high-voltage DC and stores the ignition energy in the capacitor C. After receiving the trigger excitation, it releases the energy to the explosive foil detonator to complete the detonation.

[0044] refer to Figures 1 to 17 The working principle of the deep-sea suspended cable cutting device shown is as follows: 1) Inspection and parameter setting. Remove the cutting device from the packaging box for equipment inspection and set the safety delay (T) according to task requirements. s2 ) and delayed detonation time (Ttrig).

[0045] 2) Installation. Install the cutting device on the mounting platform using the mounting bracket, and manually pull out safety pin 531.

[0046] 3) Approaching the target tether. The cutting device is launched into the water along with the platform, sails to the vicinity of the target, and completes target identification and alignment.

[0047] 4) Target fixation, device power-on, and platform separation. The platform moves to bring the underwater target into the anchoring slot 510 (as shown in Figure 15). The door panel 520 closes, and the magnet 532 triggers the anchoring mechanism locking sensor on the power-on control circuit board 311. The drive circuit operates, the cutting device is powered on, and the ignition actuator is activated. The cutting device quickly separates from the fixing frame, and the platform can then be quickly evacuated.

[0048] 5) Disarm the first safety measure. After the platform is removed, disarm the first safety measure INT1 and run the safety delay Ts1 (N minutes, which is the preset time).

[0049] 6) Disarm the second safety device. Measure the water depth. When the depth is greater than D (in meters, a preset depth value), disarm the second safety device INT2. Run the safety delay Ts2 (N minutes, a preset time).

[0050] 7) Waiting for detonation. If a remote "detonation" command is received during the waiting period, the cutting device controls the inline detonator to detonate the working section and cut the anchor cable target; if no remote "detonation" command is received, the inline detonator is controlled to detonate the working section after the delayed detonation time (Ttrig) ends, cutting the anchor cable target and ending the mission.

[0051] like Figure 16 and Figure 17 As shown, after cutting a 40mm diameter steel cable using this device, the jet still has a relatively high residual jet velocity. When the steel cable diameter is 50mm, there is almost no residual jet after the jet cuts the steel cable, which has good cutting performance and the jet direction is stable, making it extremely suitable for cutting deep-sea suspended cable systems.

[0052] The above are merely preferred embodiments of this utility model. It should be noted that any modifications and improvements made by those skilled in the art without departing from this technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. A deep-sea suspended cable cutting device, characterized in that, include: A pressure-resistant housing (100) is provided with a working part (200), a fuse system (300) and a power supply (400) inside the pressure-resistant housing (100). An anchor cable fixing mechanism (500) is provided on one end of the pressure-resistant housing (100) near the working part (200) for anchoring the cutting device relative to the cable system to be cut; The separation mechanism (600) is located on the pressure-resistant housing (100) at one end opposite to the anchor cable fixing mechanism (500) and is used to quickly separate the cutting device from the mounting platform.

2. The deep-sea suspended cable cutting device according to claim 1, characterized in that: The anchor cable fixing mechanism (500) includes an anchoring groove (510), and a door plate (520) and a stop (530) corresponding to the anchoring groove (510). In the initial state, the axial ends and one radial side of the anchoring groove (510) are open. When the stop (530) is pressed and rotates inward, the door plate (520) slides to close the radial opening side of the anchoring groove (510).

3. The deep-sea suspended cable cutting device according to claim 2, characterized in that: The anchor cable fixing mechanism (500) includes a mounting box (540) and a mounting plate (550) fixedly connected to the pressure-resistant housing (100). One end of the mounting box (540) is open, and the mounting plate (550) faces the open end of the mounting box (540). The opposing parts of the mounting box (540) and the mounting plate (550) together form the anchoring groove (510). The mounting box (540) has a sliding groove (541) that slides with the door panel (520). The door panel (520) is equipped with a door panel tension spring (521). The two ends of the door panel tension spring (521) are fixed to the mounting box (540) and the door panel (520) respectively. The door panel (520) has a tendency to slide towards the mounting plate (550). The stop (530) is rotatably mounted on the mounting plate (550) and abuts against the outer end of the door panel (520).

4. The deep-sea suspended cable cutting device according to claim 3, characterized in that: The stop (530) is equipped with a safety pin (531), and the mounting box (540) has a corresponding pin hole. When the stop (530) abuts against the door panel (520), the stop (530) is fixed relative to the mounting box (540) by the safety pin (531).

5. The deep-sea suspended cable cutting device according to claim 3 or 4, characterized in that: The outer end of the door panel (520) has a stop step (522), and the mounting plate (550) has a slot (551) adapted to the stop step (522).

6. The deep-sea suspended cable cutting device according to claim 3 or 4, characterized in that: The mounting plate (550) is provided with a right guide part (552), and the mounting box (540) is provided with a left guide part (542). The right guide part (552) and the left guide part (542) are arranged in a figure-eight shape.

7. The deep-sea suspended cable cutting device according to claim 3 or 4, characterized in that: The stop (530) is provided with a magnet (532), and the pressure-resistant housing (100) has a matching anchoring mechanism locking sensor. When the cable to be cut enters the anchoring groove (510), the magnet (532) rotates with the stop (530) toward the pressure-resistant housing (100), approaches and triggers the anchoring mechanism locking sensor.

8. The deep-sea suspended cable cutting device according to claim 1, characterized in that: The release mechanism (600) includes a ignition actuator (610), a release sleeve (620), and a fixing frame (630). The ignition actuator (610) is fixed on the pressure-resistant housing (100), and the release sleeve (620) is fixed relative to the actuating rod (611) of the ignition actuator (610) by a steel ball (640). The fixed frame (630) is fixedly connected to the release sleeve (620), and a release spring (650) is sleeved on the release sleeve (620). The two ends of the release spring (650) abut against the pressure-resistant housing (100) and the fixed frame (630) respectively.

9. The deep-sea suspended cable cutting device according to claim 8, characterized in that: The fixing frame (630) and the release sleeve (620) are detachably connected; The actuating rod (611) has a steel ball groove (612). The outer side of the pressure-resistant housing (100) has a cylindrical part (111) corresponding to the position of the ignition actuator (610). The cylindrical part (111) has evenly distributed ball holes (1110). Each ball hole (1110) contains a steel ball (640). The end of the release sleeve (620) near the pressure-resistant housing (100) has an inwardly protruding anti-detachment part (621). In the initial state, the steel ball groove (612) is relatively far away from the steel ball (640). When the ignition actuator (610) is activated, the actuating rod (611) moves outward, and the steel ball (640) slides into the steel ball groove (612). The fixing frame (630) and the release sleeve (620) are disengaged from the actuating rod (611) under the action of the release spring (650).

10. The deep-sea suspended cable cutting device according to any one of claims 1 to 4, 8, or 9, characterized in that: The pressure-resistant shell (100) has a buoyancy module (700), and the cutting device is a zero-buoyancy body.

Images