A submarine cable protection device and a submarine cable protection method

Abstract

The application discloses a submarine cable protection device and a submarine cable protection method, and relates to the technical field of submarine cable protection. The submarine cable protection device comprises a door-shaped frame, a connecting rod, a transmission mechanism and two groove bottom shutters. The door-shaped frame has a top cavity and a side cavity. The top cavity is composed of an upper top plate and a lower top plate. The side cavity is composed of an outer side plate and an inner side plate. The lower end of the side cavity is provided with an avoiding opening. The upper top plate is provided with a connecting hole. The connecting rod is located in the connecting hole. The transmission mechanism is in transmission connection with the connecting rod. The two groove bottom shutters are located at one avoiding opening respectively and are connected with the transmission mechanism. The length direction of the connecting hole is perpendicular to the movement direction of the two groove bottom shutters. When the two groove bottom shutters move towards each other, the connecting rod is driven to partially extend out of the connecting hole through the transmission mechanism. When the two groove bottom shutters move away from each other, the connecting rod is driven to retract into the connecting hole through the transmission mechanism. The application has simple structure and can circularly cover and protect the submarine cable in the sea area of ship operation and the area where the submarine cable is prone to be suspended.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of submarine cable protection, in particular to a submarine cable protection device and a submarine cable protection method. BACKGROUND

[0002] The offshore wind farm is generally composed of offshore wind turbines, offshore booster stations, submarine cables and the like. The power generated by the wind turbine group needs to be transmitted to the offshore booster station through the submarine cable, the voltage is boosted and then sent to the land control center and connected to the local power grid. In recent years, with the continuous construction and grid-connected power generation operation of offshore wind farms, the submarine cable problems of many offshore wind farms have become increasingly prominent, and some even pose a safety hazard to the safe operation of the wind turbine group.

[0003] With the further development of the ocean, production activities such as marine shipping and fishing are becoming more and more frequent, and human factors are becoming a greater threat to the safe operation of submarine cables. Among them, the anchor of the ship causes the most frequent submarine cable failure. During the process of throwing and lifting the anchor, the anchor hook stings or hooks the cable, and the anchor of the ship damages the submarine cable outer insulation layer when the anchor is lifted due to the operator not strictly following the standard lifting operation, which can cause the submarine cable to be damaged by breakdown. Compared with the land cable, the environment of the submarine cable is more complex, and the submarine cable is easily damaged by the strong tension caused by the submarine cable suspension due to the change of geological conditions such as irregular movement of the seabed or the movement of the submarine tide, such as submarine natural phenomena and disasters such as tides, earthquakes and crustal movements, which can cause the submarine cable insulation layer material to age, damage or even break, and further cause the submarine cable to ground or phase-to-phase short circuit and other accidents. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a submarine cable protection device and a submarine cable protection method, which can circularly cover and protect the submarine cable in the ship operation sea area and the area where the submarine cable is prone to suspension.

[0005] To achieve the above purpose, the following technical scheme is adopted in the present application:

[0006] A submarine cable protection device is provided, comprising:

[0007] A door-shaped frame has a top chamber at the top and side chambers at both sides, the top chamber is composed of an upper top plate and a lower top plate, the side chambers are composed of an outer side plate and an inner side plate, the outer side plate is connected with the upper top plate, the inner side plate is connected with the lower top plate, the outer side plate and the inner side plate are connected through an intermediate connecting part, and the upper top plate and the lower top plate are connected through an intermediate connecting part, the side chambers are communicated with the top chamber, the lower end of the side chamber is provided with a avoiding opening, and the upper top plate is provided with a connecting hole;

[0008] an adapter rod, which is located in the adapter hole;

[0009] a transmission mechanism, which is in transmission connection with the adapter rod;

[0010] two groove bottom covers, which are respectively located at one of the escape openings and are connected with the transmission mechanism, and the two groove bottom covers can move towards each other to a closed state or move away from each other to an open state, and the length direction of the adapter hole is perpendicular to the movement direction of the two groove bottom covers;

[0011] when the two groove bottom covers move towards each other, the adapter rod can be driven to partially extend out of the adapter hole through the transmission mechanism; and when the two groove bottom covers move away from each other, the adapter rod can be driven to retract into the adapter hole through the transmission mechanism.

[0012] As a further scheme of the submarine cable protection device, the two groove bottom covers are respectively a first groove bottom cover located on the left side and a second groove bottom cover located on the right side; the transmission mechanism comprises:

[0013] an upper rack, which is arranged at the bottom of the upper top plate, and the upper rack is connected with the first groove bottom cover through a first connecting rod;

[0014] a lower rack, which is arranged at the top of the lower top plate, and the lower rack is connected with the second groove bottom cover through a second connecting rod, the upper rack is parallel to the lower rack, and the lengths of the upper rack and the lower rack both extend along the movement direction of the two groove bottom covers;

[0015] a first gear, which is located between the upper rack and the lower rack and is engaged with the upper rack and the lower rack respectively, and a first fixed shaft is rotatably connected in the shaft hole of the first gear, and the first fixed shaft is fixedly connected with the door-shaped frame;

[0016] a second gear, which is arranged in a mounting groove of the upper top plate, the mounting groove is in communication with the adapter hole, and the slot opening of the mounting groove is opposite to the first gear, the second gear partially protrudes from the slot opening of the mounting groove and is engaged with the first gear, and the shaft hole of the second gear is threadedly connected with the adapter rod.

[0017] As a further scheme of the submarine cable protection device, the transmission mechanism further comprises a first guide rail and a second guide rail which are parallel to each other, the first guide rail extends along the length direction of the upper rack, the second guide rail extends along the length direction of the lower rack, the first guide rail is installed on the bottom of the upper top plate, the upper rack is in guiding cooperation with the first guide rail, the second guide rail is installed on the top of the lower top plate, the lower rack is in guiding cooperation with the second guide rail, the first slot bottom shutter can push the upper rack to slide along the length direction of the first guide rail through the first connecting rod, and the second slot bottom shutter can push the lower rack to slide along the length direction of the second guide rail through the second connecting rod.

[0018] As a further scheme of the submarine cable protection device, the first slot bottom shutter is detachably connected with the first connecting rod, and the second slot bottom shutter is detachably connected with the second connecting rod.

[0019] As a further scheme of the submarine cable protection device, a first plug-in slot is formed on the top of the first slot bottom shutter, a second plug-in slot is formed on the top of the second slot bottom shutter, the second plug-in slot is in L-shaped structure, the first plug-in slot and the second plug-in slot are mirror-symmetrical, the second connecting rod is in L-shaped structure, the first connecting rod and the second connecting rod are mirror-symmetrical, the upper end of the first connecting rod is fixedly connected with the end of the upper rack, the lower end of the first connecting rod is clamped with the first plug-in slot, the upper end of the second connecting rod is fixedly connected with the end of the lower rack, and the lower end of the second connecting rod is clamped with the second plug-in slot.

[0020] As a further scheme of the submarine cable protection device, a first circular-arc-shaped notch is formed on the top of the first slot bottom shutter close to the edge of the second slot bottom shutter, a second circular-arc-shaped notch is formed on the top of the second slot bottom shutter close to the edge of the first slot bottom shutter, when the first slot bottom shutter and the second slot bottom shutter move towards each other to the folded state, the centers of the first circular-arc-shaped notch and the second circular-arc-shaped notch are overlapped, and the first circular-arc-shaped notch and the second circular-arc-shaped notch respectively fit the outer periphery of the submarine cable located in the door-shaped frame.

[0021] As a further scheme of the submarine cable protection device, the adapter rod has a first end and a second end along its length direction, a receiving groove is formed on the outer periphery of the adapter rod near the second end, an elastic part and a clamping part are installed in the receiving groove, one end of the elastic part is connected with the receiving groove, the other end is connected with the clamping part, one end of the clamping part along its length direction is connected with the groove wall of the receiving groove, the other end extends obliquely towards the outside of the adapter rod; correspondingly, a clamping groove matched with the clamping part is arranged on the inner wall of the adapter hole near the first end of the adapter rod, the second end of the adapter rod can extend out of the adapter hole and be inserted into the adapter hole of the adjacent submarine cable protection device until the clamping part is clamped with the clamping groove.

[0022] As a further scheme of the submarine cable protection device, the door-shaped frame is provided with a hook prevention mechanism.

[0023] As a further scheme of the submarine cable protection device, the hook prevention mechanism comprises a hook prevention plate, a second fixing shaft and a spring, the second fixing shaft is installed on the outer side wall of the door-shaped frame, the upper end of the hook prevention plate is rotationally connected with the second fixing shaft, one end of the spring is connected with the outer side wall of the door-shaped frame, the other end is connected with the side wall of the hook prevention plate, and the spring is located below the second fixing shaft.

[0024] In another aspect, a submarine cable protection method is provided, which applies a plurality of the submarine cable protection devices, and comprises the following steps:

[0025] (1) pulling at least one of the groove bottom cover plates of the submarine cable protection device towards the direction away from the other groove bottom cover plate, so that the two groove bottom cover plates are in an open state;

[0026] (2) passing the submarine cable through the two groove bottom cover plates and placing it in the door-shaped frame;

[0027] (3) pushing at least one of the groove bottom cover plates towards the direction close to the other groove bottom cover plate, so that the two groove bottom cover plates are in a closed state, and the adapter rod of the submarine cable protection device extends out and is inserted into the adapter hole of the adjacent other submarine cable protection device;

[0028] Repeating steps (1)-(3) until the submarine cable protection devices are installed on the whole submarine cable protection area.

[0029] Advantages:

[0030] (1) The submarine cable protection device has simple structure and convenient installation, and the axial and transverse installation of the submarine cable can be simultaneously completed by pushing the groove bottom cover plate, so that the submarine cable in the ship operation sea area and the area prone to submarine cable suspension is circularly covered and protected.

[0031] (2) The external weak parts (hook prevention plate and groove bottom cover plate) of the submarine cable protection device are fixed through simple connection modes such as fixed shaft or clamping, and the components can be quickly replaced without overall replacement if damaged in the future, so that the operation and maintenance cost is greatly reduced.

[0032] (3) The submarine cable is protected in 360°, which effectively improves the overall strength and rigidity, and can make the submarine cable smoothly cross the terrain undulating area.

[0033] (4) The submarine cable damage caused by the anchor hooking the submarine cable can be effectively prevented, the submarine cable damage rate is reduced, and the operation and maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] The application will be further described in detail below according to the drawings and examples.

[0035] Figure 1 It is a schematic view of the submarine cable protection device (two groove bottom cover plates are in an open state) along the radial direction of the submarine cable.

[0036] Figure 2 It is a schematic view of the submarine cable protection device (two groove bottom cover plates are in a closed state) along the radial direction of the submarine cable.

[0037] Figure 3 It is a schematic view of the submarine cable protection device along the axial direction of the submarine cable.

[0038] Figure 4 It is a schematic view of the two groove bottom cover plates.

[0039] Figure 5 It is a schematic view of the link rod.

[0040] In the drawings:

[0041] 100, door type frame; 101, top chamber; 102, side chamber; 103, link hole; 104, installation groove; 105, clamping groove; 110, upper top plate; 120, lower top plate; 130, outer side plate; 140, inner side plate;

[0042] 200, link rod; 210, containing groove;

[0043] 300, transmission mechanism; 310, upper rack; 320, lower rack; 330, first gear; 340, second gear; 350, first connecting rod; 351, first main rod; 352, first connecting rod; 360, second connecting rod; 361, second main rod; 362, second connecting rod; 370, first fixed shaft; 380, first guide rail; 390, second guide rail;

[0044] 400, first groove bottom shield; 410, first main groove; 420, first clamping groove; 430, first arc-shaped notch;

[0045] 500, second groove bottom shield; 510, second main groove; 520, second clamping groove; 530, second arc-shaped notch;

[0046] 610, elastic portion; 620, clamping portion;

[0047] 700 , anti-hook mechanism; 710 , anti-hook plate; 720 , second fixed shaft; 730 , spring. DETAILED DESCRIPTION

[0048] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0049] like Figures 1 to 5 As shown, the submarine cable protection device of this embodiment includes a door frame 100, a connecting rod 200, a transmission mechanism 300 and two bottom shields.

[0050] Among them, the door-shaped frame 100 has a top chamber 101 located at the top and side chambers 102 located on both sides. The top chamber 101 is composed of an upper top plate 110 and a lower top plate 120, and the side chamber 102 is composed of an outer plate 130 and an inner plate 140. The outer plate 130 is connected to the upper top plate 110, and the inner plate 140 is connected to the lower top plate 120. The outer plate 130 and the inner plate 140 as well as the upper top plate 110 and the lower top plate 120 are respectively connected by intermediate connecting parts. The side chamber 102 is connected to the top chamber 101, and an avoidance opening (not shown in the figure) is provided at the lower end of the side chamber 102, and a connecting hole 103 is opened on the upper top plate 110.

[0051] The connecting rod 200 is located in the connecting hole 103 , and the transmission mechanism 300 is in transmission connection with the connecting rod 200 .

[0052] Two slot bottom covers are respectively located at one of the two avoiding openings and connected with the transmission mechanism 300, and the two slot bottom covers can move towards each other to a closed state or move away from each other to an open state, and the length direction of the connecting hole 103 is perpendicular to the movement direction of the two slot bottom covers; when the two slot bottom covers move towards each other, the connecting rod 200 can be driven by the transmission mechanism 300 to partially extend out of the connecting hole 103; when the two slot bottom covers move away from each other, the connecting rod 200 can be driven by the transmission mechanism 300 to retract into the connecting hole 103.

[0053] In this embodiment, the slot bottom cover is connected with the connecting rod 200 through the transmission mechanism 300. In the initial state, as shown in Figure 1 , the two slot bottom covers are in the open state, and one of the two slot bottom covers moves towards the direction close to the other slot bottom cover, so that the connecting rod 200 can be driven by the transmission mechanism 300 to move in the length direction of the connecting hole 103 in the connecting hole 103 of the upper top plate 110; when the two slot bottom covers are completely closed, as shown in Figure 2 , the connecting rod 200 extends out of the connecting hole 103 and can be inserted into the connecting hole 103 of the adjacent other submarine cable protection device, and the installation of the submarine cable protection device along the axial and transverse directions of the submarine cable can be realized at the same time, the installation process is simple, and the installation time and cost can be effectively shortened.

[0054] It should be noted that the door type frame 100 along the two sides of the axial direction of the submarine cable and the bottom of the door type frame 100 are connected and sealed by the intermediate connecting part (not shown in the figure), and only the avoiding opening is arranged in the intermediate connecting part at the bottom of the door type frame 100, which is used for the transmission connection between the slot bottom cover and the transmission mechanism 300.

[0055] Further, the two slot bottom covers are respectively a first slot bottom cover 400 located on the left side and a second slot bottom cover 500 located on the right side; as shown in Figure 3 , the transmission mechanism 300 includes an upper rack 310, a lower rack 320, a first gear 330 and a second gear 340, a first connecting rod 350 and a second connecting rod 360.

[0056] Among them, the upper rack 310 is set at the bottom of the upper top plate 110, and the upper rack 310 is connected to the first groove bottom shield 400 through the first connecting rod 350; the lower rack 320 is set at the top of the lower top plate 120, and the lower rack 320 is connected to the second groove bottom shield 500 through the second connecting rod 360. The upper rack 310 is parallel to the lower rack 320, and the lengths of the upper rack 310 and the lower rack 320 extend along the movement direction of the two groove bottom shields; the first gear 330 is located between the upper rack 310 and the lower rack 320, and is respectively connected to the upper rack The rack 310 is meshed with the lower rack 320, and the first fixed shaft 370 is rotatably connected to the axial hole of the first gear 330, and the first fixed shaft 370 is fixedly connected to the door frame 100; the second gear 340 is arranged in the installation groove 104 opened on the upper top plate 110, and the installation groove 104 is connected with the connecting hole 103, and the notch of the installation groove 104 is opposite to the first gear 330, and the second gear 340 partially protrudes from the notch of the installation groove 104 and meshes with the first gear 330, and the axial hole of the second gear 340 is threadedly screwed to the connecting rod 200.

[0057] In this embodiment, the first slot bottom shield 400 is connected to the upper rack 310 through the first connecting rod 350. When the first slot bottom shield 400 moves relative to the second slot bottom shield 500, the first slot bottom shield 400 can push the upper rack 310 toward the right (refer to Figure 1 The second bottom shield plate 500 is connected to the lower rack 320 through the second connecting rod 360. When the second bottom shield plate 500 moves relative to the first bottom shield plate 400, the second bottom shield plate 500 can push the lower rack 320 to move toward the left. Since the first gear 330 is respectively engaged with the upper rack 310 and the lower rack 320, the lateral movement of the upper rack 310 and the lower rack 320 drives the first gear 330 to rotate around the first fixed axis 370. At the same time, since the first gear 330 is engaged with the second gear 340, the first gear 330 drives the second gear 340 to rotate, and the axial hole of the second gear 340 is provided with an internal thread, and the outer periphery of the connecting rod 200 is provided with an external thread, and the axial hole of the second gear 340 is threadedly engaged with the connecting rod 200. Since the second gear 340 is confined in the mounting groove 104, when the second gear 340 rotates, it drives the connecting rod 200 to rotate and moves along the length direction of the connecting hole 103 at the same time.

[0058] In order to prevent the mounting groove 104 from hindering the rotation of the second gear 340, the size of the mounting groove 104 is slightly larger than the second gear 340, that is, the second gear 340 has a clearance fit with the groove wall of the mounting groove 104 at both ends along its axial direction, and the outer periphery of the second gear 340 has a clearance fit with the groove bottom of the mounting groove 104.

[0059] Further, the transmission mechanism 300 further comprises a first guide rail 380 and a second guide rail 390 which are parallel to each other, the first guide rail 380 extends along the length direction of the upper rack 310, the first guide rail 380 is installed on the bottom of the upper top plate 110, the upper rack 310 is guided and matched with the first guide rail 380, the second guide rail 390 extends along the length direction of the lower rack 320, the second guide rail 390 is installed on the top of the lower top plate 120, the lower rack 320 is guided and matched with the second guide rail 390, the first slot bottom shutter 400 can push the upper rack 310 to slide along the length direction of the first guide rail 380 through the first connecting rod 350, the second slot bottom shutter 500 can push the lower rack 320 to slide along the length direction of the second guide rail 390 through the second connecting rod 360.

[0060] The first guide rail 380 is fixed on the bottom of the upper top plate 110, and the upper rack 310 is movable along the length direction of the first guide rail 380. In order to prevent the upper rack 310 from deforming, the upper rack 310 can further protrude a sliding block extending along the length direction of the first guide rail 380 on the top of the upper rack 310, and correspondingly, a sliding groove matched with the sliding block is arranged on the bottom of the first guide rail 380. The cross section of the sliding groove can be a trapezoidal structure, and the cross section of the sliding block is also a trapezoidal structure. The first guide rail 380 can be suspended on the bottom of the first guide rail 380 and movable along the length direction of the first guide rail 380 through the matching of the sliding block and the sliding groove. The second guide rail 390 is fixed on the top of the lower top plate 120, and the lower rack 320 is movable along the length direction of the second guide rail 390. Similarly, a sliding block can also be protruded on the bottom of the lower rack 320, and a sliding groove is arranged on the top of the second guide rail 390. The structure and matching mode of the sliding block and the sliding groove are the same as those of the upper rack 310 and the first guide rail 380, and details are not described herein.

[0061] In other embodiments, the sliding block can be arranged on the first guide rail 380 and the second guide rail 390, and the sliding groove can be arranged on the upper rack 310 and the lower rack 320. The guiding and matching of the upper rack 310 and the lower rack 320 can also be achieved, and details are not described herein.

[0062] The structure and matching mode of the sliding block and the sliding groove are conventional technical means in the field, and details are not described herein.

[0063] Further, the first slot bottom shutter 400 is detachably connected with the first connecting rod 350, and the second slot bottom shutter 500 is detachably connected with the second connecting rod 360. When the first slot bottom shutter 400 or the second slot bottom shutter 500 is damaged later, the components can be quickly replaced without the need for overall replacement, thereby reducing the operation and maintenance cost.

[0064] Exemplarily, the top of the first slot bottom cover 400 is provided with a first plug-in slot, the top of the second slot bottom cover 500 is provided with a second plug-in slot, the second plug-in slot is an L-shaped structure, the first plug-in slot and the second plug-in slot are mirror-symmetrical, the second connecting rod 350 is an L-shaped structure, the first connecting rod 350 and the second connecting rod 360 are mirror-symmetrical, the upper end of the first connecting rod 350 is fixedly connected with the end of the upper rack 310, the lower end of the first connecting rod 350 is clamped with the first plug-in slot, the upper end of the second connecting rod 360 is fixedly connected with the end of the lower rack 320, and the lower end of the second connecting rod 360 is clamped with the second plug-in slot.

[0065] As Figure 4As shown, the first insertion slot includes a first main slot 410 and a first clamping slot 420 which are opened in the top of the first slot bottom cover 400 and are connected in communication, the first clamping slot 420 is located at the left side of the first main slot 410, and one side groove wall of the first clamping slot 420 is in the same plane with the groove bottom of the first main slot 410, along the vertical direction, the depth of the first clamping slot 420 is less than the depth of the first main slot 410; the first connecting rod 350 includes a first main rod 351 and a first clamping rod 352 which are connected vertically, the first clamping rod 352 is located at the left side of the first main rod 351, the upper end of the first main rod 351 is connected vertically with the left end of the upper rack 310, the lower end of the first main rod 351 is connected with the right end of the first clamping rod 352, along the vertical direction, the depth of the first clamping slot 420 matches the thickness of the first clamping rod 352, the width of the first main slot 410 matches the length of the first clamping rod 352, the first main rod 351 partially extends out of the avoiding opening of the lower end of the side chamber 102 on the left side, and the first clamping rod 352 is located outside the side chamber 102. When installing the first slot bottom cover 400, first align the first clamping rod 352 with the first main slot 410 and then push the first slot bottom cover 400 horizontally to the right side, so that the first clamping rod 352 is inserted into the first clamping slot 420, and clamping fixation is realized. Similarly, the second insertion slot includes a second main slot 510 and a second clamping slot 520 which are opened in the top of the second slot bottom cover 500 and are connected in communication, the second clamping slot 520 is located at the right side of the second main slot 510, and one side groove wall of the second clamping slot 520 is in the same plane with the groove bottom of the second main slot 510, along the vertical direction, the depth of the second clamping slot 520 is less than the depth of the second main slot 510; the second connecting rod 360 includes a second main rod 361 and a second clamping rod 362 which are connected vertically, the second clamping rod 362 is located at the right side of the second main rod 361, the upper end of the second main rod 361 is connected vertically with the right end of the lower rack 320, the lower end of the second main rod 361 is connected with the end of the second clamping rod 362, along the vertical direction, the depth of the second clamping slot 520 matches the thickness of the second clamping rod 362, the width of the second main slot 510 matches the length of the second clamping rod 362, the second main rod 361 partially extends out of the avoiding opening of the lower end of the side chamber 102 on the right side, and the second clamping rod 362 is located outside the side chamber 102. When installing the second slot bottom cover 500, first align the second clamping rod 362 with the second main slot 510 and then push the second slot bottom cover 500 horizontally to the left side, so that the second clamping rod 362 is inserted into the second clamping slot 520, and clamping fixation is realized.

[0066] Of course, in order to improve the moving stability of the two slot bottom covers, the two connecting rods can be widened along the axial direction of the submarine cable, which can increase the contact area of the first slot bottom cover 400 and the first connecting rod 350 and the contact area of the second slot bottom cover 500 and the second connecting rod 360, and can improve the clamping stability of the first slot bottom cover 400 and the first connecting rod 350 and the clamping stability of the second slot bottom cover 500 and the second connecting rod 360. Further, along the axial direction of the submarine cable, the two sides of the slot bottom cover, the two sides of the outer side plate 130 and the two sides of the inner side plate 140 are aligned respectively, so as to realize the full circumferential coverage of the submarine cable.

[0067] Further, a first circular-arc-shaped notch 430 is formed at the top of the first slot bottom cover 400 near the edge of the second slot bottom cover 500, and a second circular-arc-shaped notch 530 is formed at the top of the second slot bottom cover 500 near the edge of the first slot bottom cover 400. When the first slot bottom cover 400 and the second slot bottom cover 500 move towards each other to the folded state, the centers of the first circular-arc-shaped notch 430 and the second circular-arc-shaped notch 530 overlap, and the first circular-arc-shaped notch 430 and the second circular-arc-shaped notch 530 respectively fit the outer periphery of the submarine cable located in the door-shaped frame 100.

[0068] After the first circular-arc-shaped notch 430 and the second circular-arc-shaped notch 530 are folded, they fit the outer periphery of the submarine cable in the door-shaped frame 100, and also can limit the submarine cable, so as to ensure that the installation positions of the submarine cable protection devices are consistent along the axial direction of the submarine cable, and the link rod 200 can be aligned with the link holes 103 of the adjacent submarine cable protection devices and smoothly inserted for linking.

[0069] Further, the number of the upper racks 310 is two, and the two upper racks 310 are respectively located on the two sides of the second gear 340 along the axial direction thereof and are spaced apart from the second gear 340. The number of the lower racks 320 is two, and the two lower racks 320 are respectively located on the two sides of the second gear 340 along the axial direction thereof and are spaced apart from the second gear 340. The structure design of the two upper racks 310 and the two lower racks 320 can improve the rotation stability of the first gear 330. The first gear 330 is a long gear, which is sufficient to mesh with the second gear 340 and the two upper racks 310 (or the two lower racks 320) for transmission. Specifically, the two upper racks 310 are respectively located directly above the two lower racks 320. The two upper racks 310 are connected with the first slot bottom cover 400 through a first connecting rod 350, and the two lower racks 320 are connected with the second slot bottom cover 500 through a second connecting rod 360. Of course, in other embodiments, each upper rack 310 can be connected with the first slot bottom cover 400 through an independent first connecting rod 360. Each lower rack 320 is connected with the second slot bottom cover 500 through an independent second connecting rod 360.

[0070] Further, the adapter rod 200 has a first end and a second end along its length direction, and a receiving groove 210 is formed on the outer periphery of the adapter rod 200 adjacent to the second end, as shown in Figure 5 As shown, the elastic part 610 and the clamping part 620 are installed in the receiving groove 210, one end of the elastic part 610 is connected with the groove bottom of the receiving groove 210, the other end is connected with the clamping part 620, one end of the clamping part 620 along its length direction is connected with the groove wall of the receiving groove 210, the other end extends obliquely towards the outside of the adapter rod 200; correspondingly, as shown in Figure 1 The inner wall of the adapter hole 103 is annularly provided with a clamping groove 105 matched with the clamping part 620 near the first end of the adapter rod 200, and the second end of the adapter rod 200 can extend out of the adapter hole 103 and be inserted into the adapter hole 103 of the adjacent cable protection device until the clamping part 620 is clamped with the clamping groove 105.

[0071] Correspondingly, one end of the adapter hole 103 adjacent to the second end of the adapter rod 200 is the outlet end, and the other end of the adapter hole 103 adjacent to the first end of the adapter rod 200 is the inlet end, when the first groove bottom shutter 400 and / or the second groove bottom shutter 500 are pushed in, the adapter rod 200 moves towards the outlet end, and the second end of the adapter rod 200 extends out of the outlet end of the adapter hole 103 and is inserted into the inlet end of the adapter hole 103 of the adjacent cable protection device until the clamping part 620 is clamped with the clamping groove 105 in the adapter hole 103 of the adjacent cable protection device, at this time, the first groove bottom shutter 400 and the second groove bottom shutter 500 are just in the closed state. The clamping of the clamping part 620 and the clamping groove 105 can also prevent the first groove bottom shutter 400 and the second groove bottom shutter 500 from moving away from each other and opening, so as to prevent the submarine cable from escaping from the door frame 100.

[0072] In this embodiment, the outer side surface of the clamping part 620 is arranged at an angle with the adapter rod 200, which facilitates the smooth insertion of the adapter rod 200 into the adjacent adapter hole 103. When the clamping part 620 is located in the adapter hole 103, it abuts against the hole wall of the adapter hole 103 under the action of the elastic part 610; when the clamping part 620 extends out of the adapter hole 103, the elastic part 610 drives the clamping part 620 to further protrude outwards of the adapter rod 200; when the clamping part 620 is inserted into another adapter hole 103, the clamping part 620 is extruded by the hole wall of the adapter hole 103 to continue extruding the elastic part 610 and moving towards the receiving groove 210; when the clamping part 620 moves to the clamping groove 105, the elastic part 610 drives the clamping part 620 to pop out of the receiving groove 210 (the protruding part increases) and is clamped in the clamping groove 105, thereby realizing the butt joint installation of the adjacent two cable protection devices.

[0073] The card slot 105 is arranged circumferentially, and no matter where the card joint 620 is located in the card slot 105, the card joint 620 can be clamped with the card slot 105. The elastic part 610 is a spring and is obliquely installed in the accommodating groove 210.

[0074] Further, in order to improve the docking installation convenience of the two adjacent submarine cable protection devices, a guide inclined surface can be arranged at the entrance end of the connecting hole 103 or at the second end of the connecting rod 200, so that the second end of the connecting rod 200 can be quickly inserted into the entrance end of the connecting hole 103 of another submarine cable protection device.

[0075] The submarine cable protection device also comprises a hook prevention mechanism 700, and the two outer side walls (left and right outer side walls) of the door-shaped frame 100 are respectively provided with a hook prevention mechanism 700, which is used for preventing the submarine cable from being damaged by a ship anchor, reducing the damage rate of the submarine cable, and reducing the operation and maintenance cost.

[0076] For example, the hook prevention mechanism 700 comprises a hook prevention plate 710, a second fixing shaft 720 and a spring 730. The second fixing shaft 720 is installed on the outer side wall of the door-shaped frame 100, the upper end of the hook prevention plate 710 is rotationally connected with the second fixing shaft 720, one end of the spring 730 is connected with the outer side wall of the door-shaped frame 100, and the other end is connected with the side wall of the hook prevention plate 710. The spring 730 is located below the second fixing shaft 720. The hook prevention plate 710 and the spring 730 can prevent the submarine cable from being damaged by the ship anchor, and the spring 730 can keep the included angle between the hook prevention plate 710 and the side wall of the door-shaped frame 100 within 15°-40° when the external force is small.

[0077] Specifically, when the ship anchor falls on the upper end surface of the submarine cable protection device, under the action of the sea current and gravity, the ship anchor will slide downward along the hook prevention plate 710 until it hooks below the hook prevention plate 710. When the ship anchor is pulled, the hook prevention plate 710 can be flipped upward around the second fixing shaft 720, and at the same time, the spring 730 is stretched, and the elastic force gradually increases. The hook prevention plate 710 can be limited to an angle of 30° with the upper end surface of the door-shaped frame 100, so as to ensure that the ship anchor can smoothly escape without hooking the submarine cable protection device. Then, under the action of the spring 730, the hook prevention plate 710 will return to the vicinity of the initial position after several vibrations, thereby realizing the hook prevention protection of the submarine cable protection device.

[0078] The embodiment also provides a submarine cable protection method, which applies the submarine cable protection device of any one of the above-mentioned embodiments and comprises the following steps.

[0079] (1) Pull at least one slot bottom shutter of the submarine cable protection device in a direction away from another slot bottom shutter, so that the two slot bottom shutters are in an open state as shown in FIG. 8; Figure 1

[0080] ​(2), the submarine cable is passed through the two slot bottom covers and placed in the door frame 100;

[0081] (3), at least one slot bottom cover is pushed towards the direction of the other slot bottom cover, so that the two slot bottom covers are in the folding state as shown in Figure 2 the connecting rod 200 of the submarine cable protection device extends and is inserted into the connecting hole 103 of the adjacent other submarine cable protection device;

[0082] Repeat steps (1)-(3) until the submarine cable protection device is installed in the whole submarine cable protection area.

[0083] In the embodiment, the submarine cable protection device can be installed in the anchor hazard prone area and the submarine cable suspension area with slightly uneven terrain on the seabed, and can cover the submarine cable along the axial direction of the submarine cable, so as to provide the submarine cable with anti-hook protection and circumferential covering protection. For the submarine cable suspension area with slightly uneven terrain, the submarine cable protection device of the embodiment can provide support for the suspended submarine cable to prevent the submarine cable from being excessively bent due to the uneven terrain.

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A submarine cable protection device, characterized in that, The utility model relates to a door type frame, including: Door type frame, top chamber and side chamber are located in top and both sides, top chamber is constituted by upper top plate and lower top plate, side chamber is constituted by outside side plate and inside side plate, outside side plate is connected with upper top plate, inside side plate is connected with lower top plate, outside side plate and inside side plate between and upper top plate and lower top plate between are connected respectively through intermediate connecting part, side chamber communicates with top chamber, the lower end of side chamber is equipped with the avoidance mouth, the upper top plate is set up with the link hole, Link rod, link rod is located in link hole, Transmission mechanism, transmission mechanism is connected with link rod transmission, Two groove bottom shutters are located respectively one of avoidance mouth and are connected with transmission mechanism, two groove bottom shutters can be moved to the state of closing or moving to the open state, the length direction of link hole is perpendicular to the movement direction of two groove bottom shutters, When two groove bottom shutters move towards, link rod can be driven to stretch out link hole partially through transmission mechanism, when two groove bottom shutters move away, link rod can be driven to retract to link hole through transmission mechanism.

2. A submarine cable protection device according to claim 1, characterised in that, Two groove bottom shutters are first groove bottom shutter and second groove bottom shutter respectively, transmission mechanism includes: Upper rack, upper rack is arranged in the bottom of upper top plate, upper rack is connected with first groove bottom shutter through first connecting rod, Lower rack, lower rack is arranged in the top of lower top plate, lower rack is connected with second groove bottom shutter through second connecting rod, upper rack is parallel to lower rack, and the length of upper rack and lower rack all extends along the movement direction of two groove bottom shutters, First gear, first gear is located between upper rack and lower rack and is engaged with upper rack and lower rack respectively, the shaft hole of first gear is rotatably connected with first fixed shaft, first fixed shaft is fixedly connected with door type frame, Second gear, second gear is arranged in the installation groove of upper top plate, installation groove communicates with link hole, and the slot of installation groove is opposite to first gear, second gear partially protrudes from the slot of installation groove and is engaged with first gear, the shaft hole of second gear is threadedly connected with link rod.

3. A submarine cable protection device according to claim 2, characterised in that, Transmission mechanism further includes first guide rail and second guide rail which are parallel to each other, the length of first guide rail extends along the length direction of upper rack, the length of second guide rail extends along the length direction of lower rack, first guide rail is installed on the bottom of upper top plate, upper rack is guided and cooperated with first guide rail, second guide rail is installed on the top of lower top plate, lower rack is guided and cooperated with second guide rail, first groove bottom shutter can push upper rack and slide along the length direction of first guide rail through first connecting rod, second groove bottom shutter can push lower rack and slide along the length direction of second guide rail through second connecting rod.

4. A submarine cable protection device according to claim 2, characterised in that, The first slot bottom cover is detachably connected with the first connecting rod, and the second slot bottom cover is detachably connected with the second connecting rod.

5. A submarine cable protection device according to claim 4, characterised in that, The top of the first slot bottom cover is provided with a first plug-in slot, and the top of the second slot bottom cover is provided with a second plug-in slot which is in L-shaped structure. The first plug-in slot and the second plug-in slot are mirror-symmetrical. The second connecting rod is in L-shaped structure. The first connecting rod and the second connecting rod are mirror-symmetrical. The upper end of the first connecting rod is fixedly connected with the end of the upper rack. The lower end of the first connecting rod is clamped with the first plug-in slot. The upper end of the second connecting rod is fixedly connected with the end of the lower rack. The lower end of the second connecting rod is clamped with the second plug-in slot.

6. A submarine cable protection device according to claim 2, characterised in that, The top of the first slot bottom cover is provided with a first circular-arc-shaped notch near the edge of the second slot bottom cover. The top of the second slot bottom cover is provided with a second circular-arc-shaped notch near the edge of the first slot bottom cover. When the first slot bottom cover and the second slot bottom cover move towards each other to the closed state, the centers of the first circular-arc-shaped notch and the second circular-arc-shaped notch are overlapped, and the first circular-arc-shaped notch and the second circular-arc-shaped notch are respectively fitted with the outer periphery of the submarine cable located in the door frame.

7. A submarine cable protection arrangement according to claim 1, characterised in that, The adapter rod has a first end and a second end along its length direction. An accommodating groove is formed in the outer periphery of the adapter rod near the second end. An elastic part and a clamping part are installed in the accommodating groove. One end of the elastic part is connected with the accommodating groove, and the other end is connected with the clamping part. One end of the clamping part along its length direction is connected with the groove wall of the accommodating groove, and the other end extends obliquely towards the outside of the adapter rod. Correspondingly, a clamping groove matched with the clamping part is formed in the inner wall of the adapter hole near the first end of the adapter rod. The second end of the adapter rod can extend out of the adapter hole and be inserted into the adapter hole of the adjacent submarine cable protection device until the clamping part is clamped with the clamping groove.

8. A submarine cable protection arrangement according to any one of claims 1 to 7, characterised in that, The door frame is provided with a hook-preventing mechanism. The outer side walls of the door frame are respectively provided with one hook-preventing mechanism.

9. A submarine cable protection device according to claim 8, characterised in that, The hook-preventing mechanism comprises a hook-preventing plate, a second fixing shaft and a spring. The second fixing shaft is installed on the outer side wall of the door frame. The upper end of the hook-preventing plate is rotatably connected with the second fixing shaft. One end of the spring is connected with the outer side wall of the door frame, and the other end is connected with the side wall of the hook-preventing plate. The spring is located below the second fixing shaft.

10. A method of protecting a submarine cable by applying a plurality of submarine cable protection devices according to any one of claims 1 to 9, characterized in that, The method comprises the following steps: (1) At least one slot bottom cover of the submarine cable protection device is pulled away from the other slot bottom cover, so that the two slot bottom covers are in an open state. (2) The submarine cable is passed through the two slot bottom covers and placed in the door frame. (3) At least one slot bottom cover is pushed towards the other slot bottom cover, so that the two slot bottom covers are in a closed state. The adapter rod of the submarine cable protection device extends and is inserted into the adapter hole of the adjacent submarine cable protection device. The steps (1)-(3) are repeated until the submarine cable protection devices are installed in the whole protection area of the submarine cable.

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