A submarine cable burying plow launching and recovering auxiliary device and method

Abstract

The application discloses a submarine cable burying plough launching and recovering auxiliary device and method, which comprises a crossbeam, a telescopic mechanism, two telescopic cylinders composed of upper cylinders and lower cylinders vertically hinged on the crossbeam, a first automatic telescopic rod vertically hinged between the upper cylinder and the lower cylinder of each telescopic cylinder, a conical cylinder arranged at the lower end of each telescopic cylinder, a hook hinged in each conical cylinder, a cable connected to the hook, the cable drawn out from the telescopic cylinder or the conical cylinder, an adjusting mechanism comprising a second automatic telescopic rod obliquely hinged between the crossbeam and the upper cylinder, and a stabilizing rod, the lower end of which is used for fixing the burying plough, and the upper end of which is provided with a ring hole for locking or unlocking the hook. The application overcomes the problem that the burying plough cannot be safely launched and recovered in the environment with large waves on the sea.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of submarine cable laying, in particular to a submarine cable burying plow launching and recovering auxiliary device and method. BACKGROUND

[0002] Submarine cable laying construction refers to laying submarine cable on seabed, wherein the submarine cable refers to submarine cable. When the submarine cable is launched from the sea surface to the seabed, a burying plow is needed to dig a trench on the seabed to form a groove, and the submarine cable is laid in the groove to realize continuous operation of laying and burying the submarine cable. The burying plow is launched from the construction ship to the sea water by a hoisting device, and the disadvantage is that when the burying plow is launched or recovered by the hoisting device, the hoisting cable and the burying plow will sway due to the influence of wind and waves on the sea surface, so that the burying plow is hoisted in an unstable state, thereby increasing the difficulty and risk of launching the burying plow, and even causing the burying plow to be unable to be launched into the sea water and fall on the seabed, and causing the burying plow to be unable to be recovered smoothly from the sea water to the construction ship. SUMMARY

[0003] The purpose of the present application is to provide a submarine cable burying plow launching and recovering auxiliary device and method to solve the problem that the burying plow is in an unstable state and cannot be launched or recovered due to the influence of wind and waves on the sea surface.

[0004] In order to solve the above technical problems, the present application provides a submarine cable burying plow launching and recovering auxiliary device, comprising:

[0005] a cross beam arranged horizontally;

[0006] a telescopic mechanism comprising two telescopic cylinders vertically hinged on the same side of the cross beam, the telescopic cylinder comprising an upper cylinder body and a lower cylinder body telescopically connected, a first automatic telescopic rod vertically hinged between the upper cylinder body and the lower cylinder body of each telescopic cylinder, the two telescopic cylinders being symmetrically distributed at both ends of the cross beam in the length direction, a conical cylinder being communicatively arranged at the lower end of each telescopic cylinder, a clasp being hinged in each conical cylinder, the clasp being connected with a control cable for controlling the rotation of the clasp along the hinge point, the control cable being led out from the telescopic cylinder or the conical cylinder;

[0007] an adjusting mechanism comprising a second automatic telescopic rod obliquely hinged between the cross beam and the upper cylinder body, the adjusting mechanism and the telescopic mechanism being distributed on both sides of the cross beam;

[0008] a roll damping rod, the lower end of the roll damping rod being used for fixing the burying plow, the upper end of the roll damping rod being provided with a ring hole for locking or unlocking the clasp, when the roll damping rod is inserted into the conical cylinder, the clasp is rotated along the hinge point to the ring hole of the roll damping rod by tightening the control cable to lock the roll damping rod, and the clasp is rotated along the hinge point from the ring hole by loosening the control cable to unlock the roll damping rod.

[0009] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0010] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0011] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0012] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0013] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0014] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0015] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0016] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0017] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0018] Further, the submarine cable burying plow launching and recovering auxiliary device provided by the application is characterized in that the upper cylinder and the second automatic telescopic rod are hingedly connected to the cross beam through the hinged plates arranged at an obtuse angle, and the second automatic telescopic rod is hingedly connected to the upper cylinder through the hinged seat arranged on the upper cylinder.

[0019] In order to solve the above technical problems, the application further provides a submarine cable burying plow launching and recovering method, which adopts the submarine cable burying plow launching and recovering auxiliary device, and includes a burying plow launching method and a burying plow recovering method.

[0020] On the construction ship, the stabilizer rod of the submarine cable burying plow launching and recovering auxiliary device is installed on the burying plow, the submarine cable burying plow launching and recovering auxiliary device is hoisted to a predetermined height by the hoisting equipment through the cross beam, the conical barrel of the submarine cable burying plow launching and recovering auxiliary device is aligned with the stabilizer rod, the stabilizer rod is inserted into the conical barrel, the cable is tensioned to lock the stabilizer rod by the hook, and the submarine cable burying plow launching and recovering auxiliary device is rigidly connected with the burying plow; the steel wire rope is connected on the burying plow, and the steel wire rope is wound on the cross beam of the submarine cable burying plow launching and recovering auxiliary device.

[0021] The submarine cable burying plow launching and recovering auxiliary device and the burying plow which are rigidly connected are hoisted in the vertical direction by the hoisting equipment to the air above the sea.

[0022] Before the burying plow is launched, the burying plow launching and recovering auxiliary device and the burying plow are inclined due to the swing caused by the wind and wave on the sea surface, the telescopic mechanism, the stabilizer rod and the burying plow connected with the stabilizer rod are synchronously rotated and adjusted to the vertical direction by the second automatic telescopic rod, the telescopic mechanism is controlled to be elongated, the submarine cable burying plow launching and recovering auxiliary device and the burying plow which are rigidly connected are lowered to the sea water in the vertical direction, the stabilizer rod is unlocked from the hook by loosening the cable, the burying plow connected with the stabilizer rod is separated from the submarine cable burying plow launching and recovering auxiliary device, and the burying plow connected with the stabilizer rod is launched to the seabed in the vertical direction by controlling the steel wire rope.

[0023] Further, the submarine cable burying plow launching and recovering method provided by the present application comprises:

[0024] The burying plow connected with the stabilizer rod is hoisted to the sea surface out of the water by controlling the steel wire rope, the submarine cable burying plow launching and recovering auxiliary device after the stabilizer rod is separated is hoisted in the air above the sea surface by the hoisting equipment at the burying plow recovering position, the telescopic mechanism is controlled to be elongated to insert the stabilizer rod into the conical barrel, the stabilizer rod is locked by the hook by tensioning the cable, the submarine cable burying plow launching and recovering auxiliary device is rigidly connected with the burying plow, the burying plow is separated from the sea water and raised to the air above the sea surface by controlling the telescopic mechanism to be contracted, the submarine cable burying plow launching and recovering auxiliary device and the burying plow which are rigidly connected are inclined due to the swing caused by the wind and wave on the sea surface, the telescopic mechanism, the stabilizer rod and the burying plow connected with the stabilizer rod are synchronously rotated and adjusted to the vertical direction by the second automatic telescopic rod, and the submarine cable burying plow launching and recovering auxiliary device and the burying plow which are rigidly connected are recovered to the construction ship in the vertical direction by the hoisting equipment.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The submarine cable burying plough launching and recovering auxiliary device and method provided by the application forms rigid connection with the burying plough through the submarine cable burying plough launching and recovering auxiliary device, and the burying plough can be controlled to be away from or enter the water surface through the telescopic mechanism, so that the stability of the initial launching or recovering is ensured; when the burying plough is launched, after the burying plough is hoisted to above the sea surface as a whole and then swings under the action of sea waves, the second automatic telescopic rod is used for telescopic adjustment, so that the telescopic mechanism, the anti-rolling rod and the burying plough connected therewith are synchronously rotated and adjusted to be vertical relative to the cross beam, then the submarine cable burying plough launching and recovering auxiliary device and the burying plough in rigid connection are kept vertical as a whole, the burying plough can be hoisted in the gravity balance stable state under the action of sea waves, and the problem that the burying plough is unstable in gravity center and is likely to fall off and be damaged or cause hoisting accidents is solved; the burying plough connected with the anti-rolling rod is lowered into the sea water through the extension of the telescopic mechanism, the anti-rolling rod is unlocked from the hook through the loosening of the cable, the submarine cable burying plough launching and recovering auxiliary device is separated from the burying plough, the burying plough connected with the anti-rolling rod is launched along the vertical direction to the seabed through the control of the steel wire rope, and the purpose that the burying plough can be safely launched under the condition of large sea waves is achieved, and the problem that the burying plough cannot be safely launched under the influence of sea waves is solved.

[0027] The submarine cable burying plough launching and recovering auxiliary device and method provided by the application, when the burying plough is recovered, the burying plough connected with the anti-rolling rod is hoisted to the state of not being out of the water surface along the vertical direction through the control of the steel wire rope, the submarine cable burying plough launching and recovering auxiliary device after the anti-rolling rod is separated is hoisted above the sea surface at the burying plough recovery position through the hoisting equipment, the submarine cable burying plough launching and recovering auxiliary device above the sea surface is connected with the burying plough in the state of not being out of the water surface in a rigid manner; the burying plough is separated from the sea water and rises to above the sea surface through telescopic adjustment of the telescopic mechanism, after the submarine cable burying plough launching and recovering auxiliary device and the burying plough in rigid connection swing under the action of sea waves, the second automatic telescopic rod is used for telescopic adjustment, so that the telescopic mechanism, the anti-rolling rod and the burying plough connected therewith are synchronously rotated and adjusted to be vertical relative to the cross beam, so that the gravity balance stable state of the submarine cable burying plough launching and recovering auxiliary device and the burying plough in rigid connection as a whole is ensured, the burying plough launching and recovering auxiliary device and the burying plough in the gravity balance state are hoisted and recovered to the construction ship in the vertical direction state as a whole through the hoisting equipment, the purpose that the burying plough can be safely recovered under the condition of large sea waves is achieved, and the problem that the burying plough cannot be safely recovered under the influence of sea waves is solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a three-dimensional structure schematic view of the submarine cable burying plough launching and recovering auxiliary device and the burying plough in the connected state;

[0029] Figure 2is a schematic diagram of the rear view structure of the submarine cable burying plough launching and recovering auxiliary device and the burying plough in the connected state;

[0030] Figure 3 is a schematic diagram of the rear view structure of the submarine cable burying plough launching and recovering auxiliary device and the burying plough in the separated state;

[0031] Figure 4 is a schematic diagram of the structure of the submarine cable burying plough launching and recovering auxiliary device after the disconnecting of the stabilizing rod;

[0032] Figure 5 is a schematic diagram of the structure of the submarine cable burying plough launching and recovering auxiliary device and the burying plough in the connected state and the steel wire rope arranged on the burying plough;

[0033] Figure 6 is a schematic diagram of the structure of the hook;

[0034] Figure 7 is a schematic diagram of the structure of the cross beam section;

[0035] Figure 8 is a schematic diagram of the structure of the upper cylinder;

[0036] Figure 9 is a schematic diagram of the structure of the lower cylinder;

[0037] Figure 10 is a schematic diagram of the structure of the sliding rail and the sliding block cooperation relationship;

[0038] Figure 11 is a schematic diagram of the structure of the fixing frame;

[0039] In the drawings:

[0040] 100, submarine cable burying plough launching and recovering auxiliary device, 110, cross beam, 111, hinged plate, 120, telescopic mechanism, 121, upper cylinder, 122, lower cylinder, 123, conical cylinder, 124, first automatic telescopic rod, 125, hinged seat, 126, sliding rail, 127, sliding block, 130, second automatic telescopic rod, 140, stabilizing rod, 150, locking mechanism, 151, hook, 151-1, hook body, 151-2, ear hole, 151-3, rope passing hole, 152, drawstring, 153, ring hole, 160, fixing frame, 161, center plate, 162, inclined rod, 163, horizontal rod, 170, connecting rod, 180, rope limiting rod;

[0041] 200, burying plough;

[0042] 300, steel wire rope. DETAILED DESCRIPTION

[0043] The application will be described in greater detail with reference to the accompanying drawings, in which:

[0044] Please refer to Figures 1 to 11 The embodiment of the application provides a submarine cable burying plough launching and recovering auxiliary device 100, which comprises a crossbeam 110, an extension mechanism 120, an adjusting mechanism, a stabilizing rod 140 and a locking mechanism 150, wherein:

[0045] The crossbeam 110 is horizontally arranged.

[0046] The extension mechanism 120 comprises two extension cylinders which are vertically hinged on the same side of the crossbeam 110, the extension cylinder comprises an upper cylinder body 121 and a lower cylinder body 122 which are connected in extension, further comprises a first automatic extension rod 124 which is vertically hinged between the upper cylinder body 121 and the lower cylinder body 122 of each extension cylinder, the two extension cylinders are symmetrically distributed at two ends of the length direction of the crossbeam 110, a tapered cylinder 123 is arranged at the lower end of each extension cylinder in communication, a clasp 151 is hinged in each tapered cylinder 123, the clasp 151 is connected with a control cable 152 which is used for controlling the rotation of the clasp 151 along the hinge point, the control cable 152 is led out from the extension cylinder or the tapered cylinder 123. Wherein Figure 2 The control cable 152 is led out from the lower cylinder body 122 and the upper cylinder body 121, wherein the control cable 152 is led into the lower cylinder body 122 and the upper cylinder body 121 and led out from the hinge seat 125 on the upper cylinder body 121.

[0047] The adjusting mechanism comprises a second automatic extension rod 130 which is obliquely hinged between the crossbeam 110 and the upper cylinder body 121, the adjusting mechanism and the extension mechanism 120 are distributed on the two sides of the crossbeam 110. Wherein the first automatic extension rod 124 and the second automatic extension rod 130 can be hydraulic cylinders.

[0048] The stabilizing rod 140 is arranged on the burying plough 200 at the lower end, the upper end is provided with a ring hole 153 which is locked or unlocked with the clasp 151, when the stabilizing rod 140 is inserted into the tapered cylinder 123, the stabilizing rod 140 is locked by rotating the clasp 151 along the hinge point into the ring hole 153 of the stabilizing rod 140 through the control cable 152, the stabilizing rod 140 is unlocked by rotating the clasp 151 along the hinge point out of the ring hole 153 through the control cable 152. Wherein the ring hole 153 on the stabilizing rod 140, the clasp 151 and the control cable 152 form the locking mechanism 150.

[0049] Please refer to Figure 5 , Figure 2 andFigure 3 The embodiment of the present application also provides a submarine cable burying plow launching and recovering method, which adopts the submarine cable burying plow launching and recovering auxiliary device 100 of the above embodiment, and comprises a burying plow 200 launching method and a burying plow 200 recovering method.

[0050] In step S401, the anti-swing rod 140 of the submarine cable burying plow launching and recovering auxiliary device 100 is installed on the burying plow 200 on the construction ship, the submarine cable burying plow launching and recovering auxiliary device 100 is hoisted to a predetermined height by the hoisting equipment, the anti-swing rod 140 is inserted into the conical barrel 123, the cable 152 is pulled to lock the anti-swing rod 140 by the hook 151, and the submarine cable burying plow launching and recovering auxiliary device 100 is rigidly connected with the burying plow 200. The steel wire rope 300 is connected on the burying plow 200 and wound around the cross beam 110 of the submarine cable burying plow launching and recovering auxiliary device 100. The anti-swing rod 140 can be connected to the frame of the burying plow 200 by the flange and the flange bolts, and the frame of the burying plow 200 is also provided with a flange. The rigidly connected submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 can inhibit the burying plow 200 from swinging, so as to avoid the burying plow 200 from swinging when it leaves the construction ship, thereby stabilizing the burying plow 200.

[0051] In step S402, the rigidly connected submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 are hoisted in the vertical direction by the hoisting equipment.

[0052] In step S403, before the burying plow 200 is launched, the submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 are tilted due to the synchronous swinging under the action of the sea wind and waves, the extension and retraction mechanism 120, the anti-swing rod 140 and the burying plow 200 connected thereto are adjusted to be in the vertical direction by the second automatic extension and retraction rod 130, the extension and retraction mechanism 120 is controlled to be extended, the rigidly connected submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 are controlled to be lowered to the sea water in the vertical direction, the anti-swing rod 140 is unlocked from the hook 151 by loosening the cable 152, the burying plow 200 connected with the anti-swing rod 140 is separated from the submarine cable burying plow launching and recovering auxiliary device 100, and the burying plow 200 connected with the anti-swing rod 140 is launched along the vertical direction to the seabed by controlling the steel wire rope 300.

[0053] Please refer to Figures 2 to 3 and Figure 5The submarine cable burying plow launching and recovering method provided by the embodiment of the application comprises:

[0054] In step S404, the steel wire rope 300 is controlled to be pulled back to hoist the submarine cable burying plow 200 connected with the stabilizing rod 140 to the state of being out of water, the submarine cable burying plow launching and recovering auxiliary device 100 after the stabilizing rod 140 is disconnected is hoisted above the sea surface at the submarine cable burying plow 200 recovering position by the hoisting equipment, the telescopic mechanism 120 is controlled to be extended to make the stabilizing rod 140 inserted into the conical cylinder 123, the tension cable 152 is controlled to be tightened to lock the stabilizing rod 140 on the hook 151, and the submarine cable burying plow launching and recovering auxiliary device 100 is rigidly connected with the submarine cable burying plow 200; the telescopic mechanism 120 is controlled to be contracted to make the submarine cable burying plow 200 separated from the sea water and rise to the sea surface, the submarine cable burying plow launching and recovering auxiliary device 100 and the submarine cable burying plow 200 which are rigidly connected are caused to swing and tilt under the action of the wind and wave on the sea surface, the second automatic telescopic rod 130 is used to adjust the extension and contraction to make the telescopic mechanism 120, the stabilizing rod 140 and the submarine cable burying plow 200 connected with the stabilizing rod 140 synchronously rotate and adjust to the vertical direction relative to the cross beam 110, and the submarine cable burying plow launching and recovering auxiliary device 100 and the submarine cable burying plow 200 which are rigidly connected are recovered to the construction ship in the vertical direction state by the hoisting equipment. Thus, the problem that the submarine cable burying plow 200 in the air after leaving the water surface is unbalanced and unstable and is difficult to be recovered due to the swing is avoided.

[0055] The submarine cable burying plough launching and recovering auxiliary device 100 and method provided by the embodiment of the application forms a rigid connection with the burying plough 200, and the extension mechanism 120 can control the burying plough 200 to leave or enter the water surface, thereby ensuring the stability at the initial launching or recovering; when the burying plough 200 is launched, after the burying plough 200 is hoisted to above the sea surface and then swings under the action of the sea surface wind and waves, the second automatic extension rod 130 is used for extension adjustment, so that the extension mechanism 120, the anti-rolling rod 140 and the burying plough 200 connected thereto are synchronously rotated and adjusted to be in the vertical direction relative to the cross beam 110, then the submarine cable burying plough launching and recovering auxiliary device 100 and the burying plough 200 which form a rigid connection are kept in the vertical direction as a whole, and the burying plough 200 can be hoisted in the gravity balance stable state under the sea surface wind and waves, thereby preventing the burying plough 200 from falling off and being damaged or from causing a hoisting safety accident due to unstable gravity center; the burying plough 200 connected with the anti-rolling rod 140 is lowered into the seawater by cooperating with the extension of the extension mechanism 120, the anti-rolling rod 140 is unlocked from the hook 151 by loosening the cable 152, the burying plough 200 connected with the anti-rolling rod 140 is separated from the submarine cable burying plough launching and recovering auxiliary device 100, the burying plough 200 connected with the anti-rolling rod 140 is launched along the vertical direction to the seabed by controlling the lowering of the steel wire rope 300, thereby achieving the purpose that the burying plough 200 can still be safely launched under the condition of large sea surface wind and waves, and overcoming the problem that the burying plough 200 cannot be safely launched for construction under the influence of the sea surface wind and waves.

[0056] The submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the present application can control the steel wire rope 300 to pull back and lift the submarine cable burying plow 200 connected with the anti-rolling rod 140 to the state of being above the sea surface but not out of the water in the vertical direction during the recovering of the burying plow 200, and the submarine cable burying plow launching and recovering auxiliary device 100 after the anti-rolling rod 140 is separated is hoisted by the hoisting equipment above the sea surface at the recovering position of the burying plow 200, and the submarine cable burying plow launching and recovering auxiliary device 100 above the sea surface is rigidly connected with the burying plow 200 in the state of being above the sea surface but not out of the water; the burying plow 200 is separated from the sea water and lifted to the air above the sea surface by the contraction adjustment of the telescopic mechanism 120, after the submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 rigidly connected with each other sway under the action of the wind and waves on the sea surface, the telescopic mechanism 120, the anti-rolling rod 140 and the burying plow 200 connected with the anti-rolling rod 140 are synchronously rotated and adjusted to the vertical direction by the telescopic adjustment of the second automatic telescopic rod 130, so as to ensure the stable state of the gravity balance of the whole submarine cable burying plow launching and recovering auxiliary device 100 and the burying plow 200 rigidly connected with each other, and the burying plow 200 in the state of the gravity balance and the submarine cable burying plow launching and recovering auxiliary device 100 are hoisted and recovered to the construction ship in the vertical direction, so that the burying plow 200 can be safely recovered even if the wind and waves on the sea surface are strong, and the problem that the burying plow 200 cannot be safely recovered due to the influence of the wind and waves on the sea surface is solved.

[0057] Please refer to Figure 1 , Figures 8 to 9 In order to improve the reliability of the hinged connection, the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the present application is provided with hinged plates 111 distributed at obtuse angles at the positions where the telescopic cylinder and the horizontal beam 110 hinged with the second automatic telescopic rod 130 are located, and the telescopic cylinder and the second automatic telescopic rod 130 are hinged to the horizontal beam 110 through the hinged plates 111; a hinged seat 125 is arranged at the position where the upper cylinder body 121 hinged with the second automatic telescopic rod 130 is located, and the second automatic telescopic rod 130 is hinged to the upper cylinder body 121 through the hinged seat 125; hinged seats 125 are also arranged on the side walls at the upper and lower ends of the telescopic cylinder hinged with the first automatic telescopic rod 124, and the first automatic telescopic rod 124 is hinged to the upper and lower ends of the telescopic cylinder through the hinged seats 125.

[0058] Please refer to Figure 1 , Figures 8 to 9 In order to realize the telescopic adjustment of the telescopic cylinder, the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the present application is provided with an outer cylinder as the upper cylinder body 121 and an inner cylinder as the lower cylinder body 122, or an inner cylinder as the upper cylinder body 121 and an outer cylinder as the lower cylinder body 122.

[0059] Please refer to Figure 1、 Figures 8 to 10 In order to improve the reliability of the telescopic cylinder, the upper cylinder 121 and the lower cylinder 122 of the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application, the outer cylinder and the inner cylinder are both square cylinders, four sides of the outer wall of the inner cylinder are provided with sliding rails 126 along the length direction, and the outer cylinder is provided with sliding blocks 127 which are in sliding connection with the sliding rails 126.

[0060] Please refer to Figure 4 and Figure 6 The hook 151 includes a hook body 151-1, an ear plate 151-2 and a rope passing hole 151-3, the hook 151 is hinged in the conical cylinder 123 through the ear plate 151-2 with a hinge hole, and the inhaul cable 152 is connected with the rope passing hole 151-3.

[0061] Please refer to Figure 1 and Figure 11 In order to improve the stability, the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application can further include:

[0062] The fixing frame 160 is connected between the upper and lower ends of the two upper cylinders 121, the fixing frame 160 includes a center plate 161 and four diagonal rods 162 which are connected to the center plate 161, and the horizontal rods 163 are respectively connected between the upper and lower two end portions of the diagonal rods 162 above and below the center plate 161. The upper ends of the horizontal rods 163 above are fixed to the upper ends of the two upper cylinders 121, and the lower ends of the horizontal rods 163 below are fixed to the lower ends of the two upper cylinders 121. The fixing frame 160 ensures the structural stability between the two upper cylinders 121, and prevents the two upper cylinders 121 from tilting or deforming.

[0063] Please refer to Figure 1 In order to improve the stability of the two lower cylinders 122, the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application can further include:

[0064] The connecting rod 170 is connected between the lower ends of the two lower cylinders 122. The connecting rod 170 ensures the structural stability of the lower end of the lower cylinder 122, and prevents the lower end from being inwardly or outwardly deviated.

[0065] Please refer to Figure 1 and Figure 5In order to limit the steel wire rope 300, prevent it from being separated from the submarine cable burying plow launching and recovering auxiliary device 100, and causing the problem of traction instability of the burying plow 200 after launching and recovering, the submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application can also include:

[0066] The rope limiting rod 180 is in a U shape and is connected to the connecting rod 170, and a rope limiting space is formed between the rope limiting rod 180 and the connecting rod 170. At this time, the steel wire rope 300 wound on the cross beam 110 can pass through and be limited in the rope limiting space formed between the rope limiting rod 180 and the connecting rod 170.

[0067] The submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application is an improvement on the launching and recovering method of the burying plow 200. The submarine cable burying plow launching and recovering auxiliary device 100 is rigidly connected to the burying plow 200. When the burying plow 200 is tilted and unstable due to swinging under the action of sea waves, the tilt angle of the burying plow 200 and the adjusting telescopic mechanism 120, the anti-rolling rod 140 and the burying plow 200 connected thereto are adjusted by the second automatic telescopic rod 130 of the submarine cable burying plow launching and recovering auxiliary device 100 to be perpendicular or close to the vertical direction, so as to ensure the stable launching of the burying plow 200 in the sea wave environment. The separation or connection of the burying plow 200 and the submarine cable burying plow launching and recovering auxiliary device 100 is controlled by the locking mechanism 150, and the safe launching or control of the burying plow 200 and the whole safe recovery of the burying plow 200 and the submarine cable burying plow launching and recovering auxiliary device 100 are realized by cooperation with the steel wire rope 300. The problem that the burying plow 200 cannot be safely launched or recovered in the extreme sea conditions such as large sea waves is solved. The application is helpful to widen the selection range of the window period of submarine cable laying operation.

[0068] The submarine cable burying plow launching and recovering auxiliary device 100 and method provided by the embodiment of the application can effectively control the swinging range of the burying plow 200 in the large sea wave condition, complete the safe and stable launching and recovering operation, and help to improve the submarine cable laying level and prolong the operation window period.

[0069] The application is not limited to the above specific embodiments. Obviously, the above-described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the described embodiments of the application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the application. Those skilled in the art can make other modifications and changes to the application. Therefore, if these modifications and changes of the application belong to the scope of the claims of the application, the application also intends to include these modifications and changes.

Claims

1. A submarine cable laying and retrieval auxiliary device, characterized in that, include: The crossbeam is set horizontally. The telescopic mechanism includes two telescopic cylinders vertically hinged to the same side of the crossbeam. Each telescopic cylinder includes an upper cylinder and a lower cylinder that are telescopically connected. A first automatic telescopic rod is vertically hinged between the upper and lower cylinders of each telescopic cylinder. The two telescopic cylinders are symmetrically distributed at both ends of the crossbeam along its length and are connected to a tapered cylinder disposed at the lower end of each telescopic cylinder. A hook is hinged to each tapered cylinder, and a cable for controlling its rotation along the hinge point is connected to the hook. The cable extends out from the telescopic cylinder or the tapered cylinder. The adjustment mechanism includes a second automatic telescopic rod that is obliquely hinged between the crossbeam and the upper cylinder. The adjustment mechanism and the telescopic mechanism are distributed on both sides of the crossbeam. The anti-sway rod has its lower end fixedly mounted on the burial plow, and its upper end has an annular hole for locking or unlocking the hook. When the anti-sway rod is inserted into the conical cylinder, the hook is rotated along the hinge point into the annular hole of the anti-sway rod by tightening the cable to lock the anti-sway rod. The anti-sway rod is unlocked by releasing the cable and allowing the hook to rotate along the hinge point by gravity and disengage from the annular hole.

2. The submarine cable laying and retrieval auxiliary device according to claim 1, characterized in that, Hinge plates arranged at obtuse angles are provided at the crossbeams that are hinged to the telescopic cylinder and the second automatic telescopic rod, respectively. The telescopic cylinder and the second automatic telescopic rod are respectively hinged to the crossbeams through the hinge plates. A hinge seat is provided at the upper cylinder that is hinged to the second automatic telescopic rod, and the second automatic telescopic rod is hinged to the upper cylinder through the hinge seat. Hinge seats are also provided on the side walls at the upper and lower ends of the telescopic cylinder that are hinged to the first automatic telescopic rod, and the first automatic telescopic rod is respectively hinged to the upper and lower ends of the telescopic cylinder through the hinge seats.

3. The submarine cable laying plow deployment and retrieval auxiliary device according to claim 1, characterized in that, The upper cylinder is the outer cylinder, and the lower cylinder is the inner cylinder; or the upper cylinder is the inner cylinder, and the lower cylinder is the outer cylinder.

4. The submarine cable laying plow deployment and retrieval auxiliary device according to claim 3, characterized in that, Both the outer and inner cylinders are square tubes. The four sides of the outer wall of the inner cylinder are provided with slide rails along its length, and the corresponding outer cylinder is provided with a slider that is slidably connected to the slide rails.

5. The submarine cable laying plow deployment and retrieval auxiliary device according to claim 1, characterized in that, The hook includes a hook body, an ear plate and a rope hole. The hook is hinged to the conical cylinder through the ear plate with a hinge hole, and the cable is connected to the rope hole.

6. The submarine cable laying and retrieval auxiliary device according to claim 1, characterized in that, Also includes: A fixing frame is connected between the upper and lower ends of the two upper cylinders. The fixing frame includes a central plate and four diagonally connected diagonally, and a horizontal bar connected horizontally between the ends of the two diagonal bars above and below the central plate.

7. The submarine cable laying plow deployment and retrieval auxiliary device according to claim 1, characterized in that, Also includes: A connecting rod is attached between the lower ends of the two lower cylinders.

8. The submarine cable laying plow deployment and retrieval auxiliary device according to claim 7, characterized in that, Also includes: The rope-limiting rod is U-shaped and connected to the connecting rod, forming a rope-limiting space between the rope-limiting rod and the connecting rod.

9. A method for deploying and recovering a submarine cable laying plow, characterized in that, The submarine cable laying plow deployment and retrieval auxiliary device according to any one of claims 1-8 includes a laying plow deployment method and a laying plow retrieval method, wherein the laying plow deployment method includes: On the construction vessel, the anti-sway bar of the cable laying plow deployment and retrieval auxiliary device is installed on the laying plow. The cable laying plow deployment and retrieval auxiliary device is then hoisted to a predetermined height on a crossbeam using hoisting equipment. The conical cylinder of the cable laying plow deployment and retrieval auxiliary device is aligned with the anti-sway bar, so that the anti-sway bar is inserted into the conical cylinder. The cable is tightened to lock the anti-sway bar with the hook, thus forming a rigid connection between the cable laying plow deployment and retrieval auxiliary device and the laying plow. A steel wire rope is then connected to the laying plow and wound around the crossbeam of the cable laying plow deployment and retrieval auxiliary device. The cable laying and retrieval auxiliary device, which forms a rigid connection with the submarine cable laying plow, is lifted vertically as a whole to the airspace above the sea. Before the burial plow is deployed, the cable burial plow deployment and retrieval auxiliary device and the burial plow sway and tilt due to the wind and waves on the sea surface. The second automatic telescopic rod is used to adjust the telescopic mechanism, the anti-sway rod and the burial plow connected to it to rotate synchronously with the crossbeam and adjust them to the vertical direction. The telescopic mechanism is controlled to extend, and the cable burial plow deployment and retrieval auxiliary device and the burial plow, which are rigidly connected, are controlled to descend vertically as a whole into the seawater. The cable is released to unlock the anti-sway rod and the hook, so that the burial plow connected to the anti-sway rod is separated from the cable burial plow deployment and retrieval auxiliary device. The steel wire rope is controlled to lower the burial plow connected to the anti-sway rod and deploy it vertically to the seabed.

10. The method for deploying and recovering a submarine cable laying plow according to claim 9, characterized in that, The method for recovering the buried plow includes: The cable-laying plow, connected to the anti-sway bar, is lifted vertically to a position below the water surface by the control wire rope retraction mechanism. The cable-laying plow deployment and retrieval auxiliary device, after the anti-sway bar is detached, is then hoisted above the plow retrieval point using lifting equipment. The telescopic mechanism extends to insert the anti-sway bar into the conical cylinder, and the tension cable locks the anti-sway bar to the hook, creating a rigid connection between the cable-laying plow deployment and retrieval auxiliary device and the plow. The telescopic mechanism then retracts to detach the plow from the seawater and elevate it above the water surface. Under the influence of wind and waves, the rigidly connected cable-laying plow deployment and retrieval auxiliary device and the plow sway and tilt. The second automatic telescopic rod is then used for adjustment, allowing the telescopic mechanism, the anti-sway bar, and the connected plow to rotate synchronously relative to the crossbeam and return to a vertical position. Finally, the rigidly connected cable-laying plow deployment and retrieval auxiliary device and the plow are retrieved together and returned to the construction vessel using lifting equipment.

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