Roller type anti-jumping protection device for submarine optical cable loading and unloading port of cable laying ship and working method of roller type anti-jumping protection device

Abstract

The invention relates to the technical field of cable laying ship optical cable laying equipment, and discloses a cable laying ship submarine optical cable loading and unloading port roller type anti-jumping protection device and a working method thereof.The anti-jumping protection device is located above a cable hatch and comprises a rotating roller, a roller rotating sleeve and an extending handle, and the rotating roller and the extending handle are arranged on the two sides of the roller rotating sleeve respectively; the end of the rotary roller is matched with the roller swing end positioning support, and the extension handle is matched with the rotary positioning socket. The method comprises the steps that an anti-tripping protection device is in place; mounting a square roller frame; optical cable conveying; entering the optical cable cabin; returning the anti-tripping protection device; and optical cable cabin entering is finished. The submarine optical cable can be supported and guided when being loaded in a cabin, and can be prevented from jumping and limited when being placed out of the cabin, so that the jumping of the submarine optical cable when entering and exiting the cable cabin is reduced, the optical cable is effectively prevented from deviating from a set path due to large-amplitude jumping, and the cable laying work of a cable laying ship is ensured to be smoothly carried out.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable laying equipment for cable-laying vessels, and in particular to a roller-type anti-jumping protection device for a loading and unloading port of a submarine optical cable on a cable-laying vessel and a working method thereof. Background Art

[0002] With the widespread application of submarine optical cables in communications, cable-laying technology has become increasingly important. As a special tool for cable laying, cable-laying vessels play a key role in the cable-laying process. Cable-laying vessels can easily lay hundreds or thousands of kilometers of lines in a single operation. Their operation cycle is long and the cost is high. During the operation, they must be prepared to deal with harsh marine environments at any time. Therefore, how to improve the laying efficiency of cable-laying vessels and ensure the progress of the project is an issue that relevant technical personnel should focus on. The loading and unloading port above the cable cabin of the cable-laying vessel is often equipped with a roller-type loading and unloading rack to enable the submarine optical cable to enter and exit the cable cabin quickly and efficiently and reduce the wear of the optical cable. However, during the process of the submarine optical cable entering and exiting the cabin, due to its fast movement speed and certain tension, the submarine optical cable often jumps. This phenomenon may cause interference and entanglement of the optical cable, affecting the entry and exit of the optical cable, and thus affecting the working efficiency of the cable-laying vessel. In addition, large jumps of the optical cable may also damage the optical cable.

[0003] In the document CN202321658580, an anti-cable cable winch is disclosed, including a base plate, a drum frame is connected to one side of the upper end of the base plate, a drum is rotatably connected inside the drum frame, one end of the drum is transmission-connected to a reduction motor, the reduction motor is installed on one side of the drum frame, and the cable pressing assembly is driven to reciprocate left and right through the reciprocating assembly, so that the optical cable can be evenly arranged when the cable is arranged, and under the restriction of the cable pressing assembly, the optical cable is located between the upper roller unit and the lower roller unit, and has a certain clamping force, which can prevent the optical cable from jumping. This structure requires squeezing the optical cable to achieve anti-jumping, which will cause squeezing damage to the optical cable over a long period of time.

[0004] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0005] In order to solve the above problems, the present invention discloses a roller-type anti-jumping protection device for the loading and unloading port of a cable-laying ship's submarine optical cable, which can effectively limit the jumping of the submarine optical cable when entering and exiting the cable cabin, and keep the submarine optical cable loaded and unloaded according to a predetermined path. At the same time, the device itself must also meet the use requirements of being stable and reliable, easy to operate, and not affecting the transfer of the optical cable in the cable cabin guide frame.

[0006] The technical solution of the present invention is: a roller-type anti-jumping protection device for the loading and unloading port of a cable-laying ship's submarine optical cable, the anti-jumping protection device is located above the cable hatch, the anti-jumping protection device includes a rotating roller, a roller rotating sleeve, and an extension handle, the two sides of the roller rotating sleeve are respectively a rotating roller and an extension handle, the end of the rotating roller cooperates with a positioning support at the roller swing end, and the extension handle cooperates with a rotating positioning socket.

[0007] By adopting the above technical solution, the device can be rotated 90° to reach the working position or the standby position according to the use requirements. After reaching the specified position, the positioning locking mechanisms on both sides are locked and fixed respectively, which can play an anti-jumping role when the optical cable comes out.

[0008] Preferably, two self-lubricating flanged bearings are built between the roller rotating sleeve and the roller rotating seat, a roller rotating seat fixed seat plate is provided at the bottom of the roller rotating seat, and the roller rotating sleeve cooperates with the self-lubricating flanged bearing and the roller rotating seat sleeve to realize the rotation function.

[0009] By adopting the above technical solution, according to actual working conditions, the roller rotary sleeve rotates in the roller rotary seat through the self-lubricating flange bearing to adapt to the two situations of anti-jumping and locking.

[0010] Preferably, the roller rotating sleeve is rectangular as a whole, and is fastened to the roller rotating seat by bolts, spring washers, flat washers and pressure covers, and the roller rotating seat fixed seat plate and the roller rotating seat are positioned and fastened by bolts.

[0011] By adopting the above technical solution, the roller swivel sleeve, self-lubricating flange bearing and roller swivel seat are all fixed on the hull. Only the rotating rollers and extended handles on both sides need to rotate around the roller swivel seat to complete the conversion between the standby position and the working position, thereby adapting to the corresponding working conditions.

[0012] Preferably, the extension handle is welded to the side of the roller rotating sleeve and is in a straight line with the rotating roller, the end of the extension handle is vertically welded to the hollow cylinder, a rotation positioning socket is provided below the hollow cylinder in a locked state, the rotation positioning socket is fixed on the hull, and a rotation positioning pin bent pipe is inserted into the rotation positioning socket and the hollow cylinder at the same time, and the rotation positioning pin bent pipe is in an inverted L shape as a whole.

[0013] By adopting the above technical solution, the roller rotating sleeve is integrated with the extension handle and rotates around the roller rotating seat. When it rotates to the stop position, the rotation positioning pin bend pipe is inserted into the hollow cylinder and the rotation positioning socket, so that the device as a whole is in a stop state. The rotation positioning pin bend pipe is L-shaped, which is convenient for the staff to grasp.

[0014] Preferably, a hollow sleeve is provided on the roller rotating sleeve on one side symmetrical to the extended handle, a roller shaft passes through the center of the rotating roller, the roller shaft passes through the hollow sleeve, pin holes are provided on the hollow sleeve and the rotating roller, roller locating pins pass through the pin holes on the hollow sleeve and the rotating roller, a smaller pin hole is provided at the end of the roller locating pin, and a B-type pin is inserted into the smaller pin hole.

[0015] By adopting the above technical solution, the roller locating pin passes through the hollow sleeve and the pin hole of the rotating roller, so that the rotating roller and the roller rotary sleeve are tightly and fixedly connected, and the B-type pin can prevent the roller locating pin from falling off from the pin hole.

[0016] Preferably, a lifting eye screw is screwed into the center position of the end of the rotating roller. When the roller is in the working position or the standby position, the roller shaft and the lifting eye screw cut into the U-shaped groove at the top of the positioning support at the swing end of the roller.

[0017] By adopting the above technical solution, the U-shaped slot plays a role of limiting the rotating roller, and when the rotating roller rotates to the U-shaped slot, it can be locked.

[0018] Preferably, two roller swing end positioning supports are provided, and the roller swing end positioning supports and the roller rotating sleeve are at right angles. The opening direction of the U-shaped slot is toward the movement direction of the rotating roller, and the roller locking pin is vertically inserted into the pin hole provided on the side of the lifting ring screw on the U-shaped slot.

[0019] By adopting the above technical solution, the device is rotated so that the rotating roller spans over the cable hatch opening, and the device is locked and fixed. At this time, the position of the device is the working position; the device is rotated 90° clockwise from the working position and locked and fixed. At this time, the position of the device is the standby position, and the rotating roller spans over the cable hatch opening. The operating roller locking pin is inserted into the pin hole, which prevents the eye screw from cutting out from the slot at the upper end of the positioning support, so the device roller side is locked and fixed.

[0020] Preferably, the fixed seat plate of the roller swivel seat is located on one side outside the cable hatch opening, and the rotating roller spans across the cable hatch opening when in working state.

[0021] By adopting the above technical solution, the rotating roller spans across the cable hatch to prevent the optical cable from jumping.

[0022] The working method of the roller type anti-jump protection device at the loading and unloading port of the cable-laying ship comprises the following steps: Step 1: Put the anti-jump protection device in place S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the slot pin hole at the upper end of the roller swing end positioning support; S3: Turn the anti-jump protection device to the working position Rotate the device 90° counterclockwise from the standby position to the working position with the roller rotary seat as the center point, so that the swing end of the rotating roller cuts into the U-shaped slot at the upper end of the positioning support; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the hollow cylinder of the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the positioning support; Step 2: Square roller frame installation Install the detachable square roller frame at the corresponding position on the guide frame; Step 3: Optical cable delivery Continue to pull the optical cable to a position near the square roller frame; Step 4: Optical cable into the cabin The optical cable passes through the detachable square roller frame and moves under its support and guidance. Then the optical cable passes over the anti-jump protection device and reaches the cable hatch under its support. The optical cable enters the cabin. Step 5: Return the anti-jump protection device to its original position When all the optical cables to be loaded into the cable cabin are loaded, the anti-jump protection device is returned to its position; S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the U-shaped slot pin hole at the upper end of the positioning support; S3: Turn the anti-jump protection device to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the positioning support of the roller swing end; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the roller swing end positioning support; Step 6: The optical cable is put into the cabin; When the optical cable is laid out of the cabin, a roller-type anti-jump protection device for the loading and unloading port of the cable cabin of the optical cable laying ship is used, and its working method includes the following steps: Step 1: Put the anti-jump protection device in place S1: unlock handle side positioning locking mechanism; Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the U-shaped slot pin hole at the upper end of the positioning support; S3: Turn the anti-jump protection device to the working position Rotate the device 90° counterclockwise from the standby position to the working position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the positioning support of the roller swing end; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the positioning support; Step 2: Optical cable out of the cabin; The optical cable exits the cabin from the cable hatch under the protection of the anti-jump protection device, and then reaches the Y-shaped cable trough through the fixed optical cable loading and unloading rack, and the optical cable exit is completed; Step 3: Return the anti-jump protection device to its original position After all the optical cables to be unloaded have been unloaded, return the anti-jump protection device to its original position; S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the slot pin hole at the upper end of the roller swing end positioning support; S3: Turn the anti-jump protection device to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the positioning support of the roller swing end; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the roller swing end positioning support; Step 4: The optical cable is unloaded from the cabin.

[0023] Preferably, fixed optical cable loading and unloading frames are provided on both sides outside the cable hatch, and a guide frame is provided between the roller swivel seat fixed seat plate and the fixed optical cable loading and unloading frames.

[0024] The benefits of the present invention are as follows: 1. The present invention enables the device to quickly switch its working state to cooperate with the work of loading and unloading optical cables into the cabin, laying them out of the cabin, etc. The anti-jump roller adopts a rotating mechanism, and its rotating sleeve has two self-lubricating flange bearings built in, which rotate with the rotating seat, so that the device can be rotated into place when working and rotated and shifted when on standby. The device has no force on the optical cable itself and will not cause damage to the optical cable.

[0025] 2. The present invention rotates the roller and the extended handle around the roller rotating sleeve to prevent the optical cable from jumping, and arranges roller swing end positioning supports at two positions, which are convenient and flexible to use. When working, it can be manually rotated to the working position and locked and fixed. When not working, it can be rotated and shifted to the standby position and locked and fixed to avoid interfering with the transfer of the optical cable in the cable cabin guide frame, etc.

[0026] 3. The present invention plays a supporting and guiding role when the submarine optical cable is loaded into the cabin, and can also play a role in preventing and limiting the submarine optical cable when it is laid out of the cabin, reducing the jumping of the submarine optical cable when it enters and exits the cable cabin, thereby effectively preventing the optical cable from jumping significantly and deviating from the established path, ensuring the smooth cable laying work of the cable-laying ship; this protection device is convenient and flexible to use, and is manually rotated to the working position and locked when working, and rotated and shifted to the standby position and locked when not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 Side view structural diagram; Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the enlarged view of part A; Figure 4 For the present invention Figure 1 A schematic diagram of the structure in top view; Figure 5 For the present invention Figure 4 A schematic diagram of the structure of the enlarged view of part B; Figure 6 For the present invention Figure 1 A schematic diagram of the structure of another side view; Figure 7 This is a schematic diagram of the structure of the roller swing end positioning support of the present invention; Figure 8 It is a schematic diagram of the working process of the present invention; Fig. 9 It is a schematic diagram of the structure of the present invention used on a ship hull.

[0028] Among them: 1. Rotary positioning pin elbow, 2. Extension handle, 2-1, hollow cylinder, 3. Rotary positioning socket, 4. Bolt, 5. Spring washer, 6. Flat washer, 7. Pressure cover, 8. Self-lubricating flange bearing, 9. Roller rotating sleeve, 10. Roller rotating seat, 10-1, hollow sleeve, 11. Roller rotating seat fixed seat plate, 12. B-type pin, 13. Roller positioning pin, 14. Rotating roller, 15. Roller locking pin, 16. Eye screw, 17. Roller swing end positioning support, 17-1, U-shaped slot, 18. Roller shaft; 20. Y-type cable trough, 30. Fixed optical cable loading and unloading rack, 40. Anti-jump protection device, 50. Cable hatch, 60. Guide frame, 70. Removable square roller frame. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] like Figure 1-2 As shown, a roller-type anti-jumping protection device is provided at the loading and unloading port of a cable-laying ship's submarine optical cable. The anti-jumping protection device 40 is located above the cable hatch 50. The anti-jumping protection device 40 comprises a rotating roller 14, a roller slewing sleeve 9 and an extending handle 2. The two sides of the roller slewing sleeve 9 are respectively provided with a rotating roller 14 and an extending handle 2. The end of the rotating roller 14 cooperates with a positioning support 17 at the roller swing end, and the extending handle 2 cooperates with a rotating positioning socket 3. The device can be rotated 90° to reach the working position or the standby position according to the use requirements. After reaching the designated position, the positioning locking mechanisms on both sides are respectively locked and fixed. When the optical cable comes out, the main body of the device rotates to switch the working state.

[0031] Two self-lubricating flanged bearings 8 are built between the roller rotating sleeve 9 and the roller rotating seat 10. A roller rotating seat fixed seat plate 11 is provided at the bottom of the roller rotating seat 10. The roller rotating sleeve 9 is sleeved and matched with the self-lubricating flanged bearings 8 and the roller rotating seat 10 to realize the rotation function. According to the actual working conditions, the roller rotating sleeve 9 rotates in the roller rotating seat 10 through the self-lubricating flanged bearings 8 to adapt to the two situations of anti-jumping and locking.

[0032] like Figure 3 As shown, the roller rotating sleeve 9 is rectangular as a whole, and the roller rotating sleeve 9 is fastened to the roller rotating seat 10 by bolts 4, spring washers 5, flat washers 6 and pressure covers 7. The roller rotating seat fixed base plate 11 and the roller rotating seat 10 are positioned and fastened by bolts. The roller rotating sleeve 9, the self-lubricating flange bearing 8 and the roller rotating seat 10 are all fixed on the hull. Only the rotating rollers 14 and the extension handles 2 on both sides need to rotate around the roller rotating seat 10 to complete the conversion between the standby position and the working position, so as to adapt to the corresponding working conditions.

[0033] The extension handle 2 is welded to the side of the roller rotating sleeve 9 and is in a straight line with the rotating roller 14. The end of the extension handle 2 is vertically welded to the hollow cylinder 2-1. A rotation positioning socket 3 is provided below the hollow cylinder 2-1 in a locked state. The rotation positioning socket 3 is fixed on the hull. A rotation positioning pin bend 1 is inserted into the rotation positioning socket 3 and the hollow cylinder 2-1 at the same time. The rotation positioning pin bend 1 is in an inverted L shape as a whole. The roller rotating sleeve 9 is integrated with the extension handle 2 and rotates around the roller rotating seat 10. When it rotates to the stop position, the rotation positioning pin bend 1 is inserted into the hollow cylinder 2-1 and the rotation positioning socket 3, so that the device as a whole is in a stop state. The rotation positioning pin bend 1 is L-shaped, which is convenient for the staff to grasp.

[0034] like Figure 4-5 As shown, a hollow sleeve 10-1 is provided on one side of the roller rotating sleeve 9 which is symmetrical to the extending handle 2. A roller shaft 19 passes through the center of the rotating roller 14. The roller shaft 19 passes through the hollow sleeve 10-1. Pin holes are provided on the hollow sleeve 10-1 and the rotating roller 14. Roller locating pins 13 pass through the pin holes on the hollow sleeve 10-1 and the rotating roller 14. A smaller pin hole is provided at the end of the roller locating pin 13. A B-type pin 12 is inserted into the smaller pin hole, so that the rotating roller 14 is tightly fixedly connected to the roller rotating sleeve 9. The B-type pin 12 can prevent the roller locating pin 15 from falling off from the pin hole.

[0035] like Figure 6-7 As shown, a lifting eye screw 16 is screwed into the center position of the end of the rotating roller 14. When it is in the working position or the standby position, the roller shaft and the lifting eye screw 16 cut into the U-shaped groove 17-1 at the top of the roller swing end positioning support 17. The U-shaped groove 17-1 has a limiting effect on the rotating roller 14. When the rotating roller 14 rotates to the U-shaped groove 17-1, it can be locked.

[0036] There are two roller swing end positioning supports 17, and the roller swing end positioning supports 17 and the roller rotating sleeve 9 are at right angles. The opening direction of the U-shaped slot 17-1 faces the movement direction of the rotating roller 14, and the roller locking pin 15 is vertically inserted into the pin hole provided on the side of the eye screw 16 on the U-shaped slot 17-1. The device rotates so that the rotating roller 14 spans across the cable hatch 50, and the device is locked and fixed. At this time, the position of the device is the working position; the device is rotated 90° clockwise from the working position to lock it. At this time, the position of the device is the standby position, and the rotating roller 14 spans across the cable hatch 50. The operating roller locking pin 15 is inserted into the pin hole, which prevents the eye screw 16 from cutting out from the slot at the upper end of the positioning support, so the roller side of the device is locked and fixed.

[0037] like Figure 8As shown, the fixed seat plate of the roller swivel seat is located on one side outside the cable hatch opening. When the rotating roller is in working state, it spans across the cable hatch opening. The rotating roller spanning across the cable hatch opening plays a role in preventing the optical cable from jumping.

[0038] The anti-jump protection device is in the standby position in its non-working state, and the positioning locking mechanisms on the extension handle side and the roller side are locked. When the optical cable enters the cabin, the optical cable anti-jump protection device 40 rotates to the working position, which can support the optical cable; when the optical cable leaves the cabin, the optical cable anti-jump protection device 40 rotates to the working position, which can play an anti-running and limiting role, effectively preventing the optical cable from jumping significantly and deviating from the established path.

[0039] like Fig. 9 As shown, the working method of the roller-type anti-jump protection device at the loading and unloading port of the cable-laying ship comprises the following steps: Step 1: Put the anti-jump protection device in place S1: Unlock handle side positioning locking mechanism Pull out the rotating positioning pin elbow 1 from the extension handle 2 and the rotating positioning socket 3; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin 15 from the slot pin hole at the upper end of the roller swing end positioning support 17; S3: Turn the anti-jump protection device to the working position The device is rotated 90° counterclockwise from the standby position to the working position with the roller rotating seat 10 as the center point, so that the swing end of the rotating roller cuts into the U-shaped slot 17-1 at the upper end of the positioning support 17; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow 1 into the hollow tube 2-1 of the extension handle 2 and the rotating positioning socket 3; S5: Locking roller side positioning locking mechanism The roller locking pin 15 is inserted into the pin hole of the U-shaped slot 17-1 at the upper end of the positioning support 17; Step 2: Square roller frame installation Install the detachable square roller frame 70 at the corresponding position on the guide frame 60; Step 3: Optical cable delivery Continue to pull the optical cable to a position near the detachable square roller frame 70; Step 4: Optical cable into the cabin The optical cable passes through the detachable square roller frame 70 and moves under the support and guidance of the roller frame. Then the optical cable passes over the anti-jump protection device 40 and reaches the cable hatch 50 under the support of the anti-jump protection device. The optical cable enters the hatch. Step 5: Return the anti-jump protection device 40 to its original position When all the optical cables to be loaded into the cable cabin are loaded into the cable cabin, the anti-jump protection device 40 is returned to its position; S1: Unlock handle side positioning locking mechanism Pull out the rotating positioning pin elbow 1 from the extension handle 2 and the rotating positioning socket 3; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin 15 from the pin hole of the U-shaped slot 17-1 at the upper end of the positioning support 17; S3: Turn the anti-jump protection device 40 to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller cuts into the U-shaped slot 17-1 at the upper end of the roller swing end positioning support 17; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow 1 into the extension handle 2 and the rotating positioning socket 3; S5: Locking roller side positioning locking mechanism The roller locking pin 15 is inserted into the pin hole of the U-shaped slot 17-1 at the upper end of the roller swing end positioning support 17; Step 6: The optical cable is put into the cabin; When the optical cable is laid out of the cabin, a roller-type anti-jump protection device 40 for loading and unloading the cable cabin of the optical cable laying ship is used, and its working method includes the following steps: Step 1: Anti-jump protection device 400 is in place S1: unlock handle side positioning locking mechanism; Pull out the rotating positioning pin elbow 1 from the extension handle 2 and the rotating positioning socket 3; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin 15 from the pin hole of the U-shaped slot 17-1 at the upper end of the positioning support 17; S3: Turn the anti-jump protection device 40 to the working position Rotate the device 90° counterclockwise from the standby position to the working position, so that the swing end of the rotating roller 14 cuts into the U-shaped slot 17-1 at the upper end of the roller swing end positioning support 17; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow 1 into the extension handle 2 and the rotating positioning socket 3; S5: Locking roller side positioning locking mechanism The roller locking pin 15 is inserted into the pin hole of the U-shaped slot 17-1 at the upper end of the positioning support 17; Step 2: Optical cable out of the cabin The optical cable is unloaded from the cable hatch 50 under the protection of the anti-jump protection device 40, and then reaches the Y-shaped cable trough 20 through the fixed optical cable loading and unloading rack 30, and the optical cable unloading is completed; Step 3: Return the anti-jump protection device 40 to its original position After all the optical cables to be unloaded have been unloaded, the anti-jump protection device 40 is returned to its original position; S1: Unlock handle side positioning locking mechanism Pull out the rotating positioning pin elbow 1 from the extension handle 2 and the rotating positioning socket 3; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin 15 from the slot pin hole at the upper end of the roller swing end positioning support 17; S3: Turn the anti-jump protection device 40 to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller 14 cuts into the U-shaped slot 17-1 at the upper end of the roller swing end positioning support 17; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow 1 into the extension handle 2 and the rotating positioning socket 3; S5: Locking roller side positioning locking mechanism The roller locking pin 15 is inserted into the pin hole of the U-shaped slot 17-1 at the upper end of the roller swing end positioning support 17; Step 4: The optical cable is unloaded from the cabin.

[0040] Fixed optical cable loading and unloading frames 30 are provided on both sides outside the cable hatch 50 , and a guide frame 60 is provided between the roller rotary seat fixed seat plate 11 and the fixed optical cable loading and unloading frames 30 .

[0041] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention, and the purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship's submarine cable. The anti-jump protection device is located above the cable hatch. The anti-jump protection device includes a rotating roller, a roller slewing sleeve, and an extension handle. The device is characterized in that: The two sides of the roller rotating sleeve are respectively provided with a rotating roller and an extending handle, the end of the rotating roller cooperates with a positioning support at the roller swing end, and the extending handle cooperates with a rotating positioning socket.

2. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 1 is characterized in that: Two self-lubricating flanged bearings are built between the roller rotating sleeve and the roller rotating seat. A roller rotating seat fixing seat plate is provided at the bottom of the roller rotating seat. The roller rotating sleeve cooperates with the self-lubricating flanged bearing and the roller rotating seat sleeve to realize the rotation function.

3. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 2 is characterized in that: The roller rotating sleeve is rectangular in shape as a whole, and is fastened to the roller rotating seat by bolts, spring washers, flat washers, pressure covers and roller rotating seats, and the roller rotating seat fixed seat plate and the roller rotating seat are positioned and fastened by bolts.

4. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 1 is characterized in that: The extension handle is welded to the side of the roller rotating sleeve and is in a straight line with the rotating roller. The end of the extension handle is vertically welded to a hollow cylinder. A rotation positioning socket is provided below the hollow cylinder in a locked state. The rotation positioning socket is fixed on the hull. A rotation positioning pin bent pipe is inserted into the rotation positioning socket and the hollow cylinder at the same time. The rotation positioning pin bent pipe is in an inverted L shape as a whole.

5. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 1 is characterized in that: A hollow sleeve is provided on the roller rotating sleeve on one side symmetrical to the extending handle, a roller shaft passes through the center of the rotating roller, the rotating roller shaft passes through the hollow sleeve, pin holes are provided on the hollow sleeve and the rotating roller, roller locating pins pass through the pin holes on the hollow sleeve and the rotating roller, a smaller pin hole is provided at the end of the roller locating pin, and a B-type pin is inserted into the smaller pin hole.

6. The roller-type anti-jump protection device for the cable-laying ship's submarine cable loading and unloading port according to claim 1 is characterized in that: A lifting eye screw is screwed into the center position of the end portion of the rotating roller. When the rotating roller is in the working position or the standby position, the roller shaft and the lifting eye screw cut into the U-shaped groove at the top of the positioning support at the swing end of the roller.

7. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 6 is characterized in that: There are two roller swing end positioning supports, and the roller swing end positioning supports and the roller rotating sleeve are at right angles. The opening direction of the U-shaped slot is toward the movement direction of the rotating roller, and a roller locking pin is vertically inserted into the pin hole provided on the side of the lifting ring screw on the U-shaped slot.

8. The roller-type anti-jump protection device for the loading and unloading port of a cable-laying ship according to claim 2 is characterized in that: The roller swivel seat fixing seat plate is located at one side outside the cable hatch opening, and the rotating roller spans across the cable hatch opening when in working state.

9. The working method of the roller type anti-jump protection device at the loading and unloading port of the cable-laying ship is characterized in that: The following steps are involved: Step 1: Put the anti-jump protection device in place S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the slot pin hole at the upper end of the roller swing end positioning support; S3: Turn the anti-jump protection device to the working position Rotate the device 90° counterclockwise from the standby position to the working position with the roller rotary seat as the center point, so that the swing end of the rotating roller cuts into the U-shaped slot at the upper end of the positioning support; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the hollow cylinder of the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the positioning support; Step 2: Square roller frame installation Install the detachable square roller frame at the corresponding position on the guide frame; Step 3: Optical cable delivery Continue to pull the optical cable to a position near the square roller frame; Step 4: Optical cable into the cabin The optical cable passes through the detachable square roller frame and moves under its support and guidance. Then the optical cable passes over the anti-jump protection device and reaches the cable hatch under its support. The optical cable enters the cabin. Step 5: Return the anti-jump protection device to its original position When all the optical cables to be loaded into the cable cabin are loaded, the anti-jump protection device is returned to its position; S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the U-shaped slot pin hole at the upper end of the positioning support; S3: Turn the anti-jump protection device to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the positioning support of the roller swing end; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the roller swing end positioning support; Step 6: The optical cable is put into the cabin; When the optical cable is laid out of the cabin, a roller-type anti-jump protection device for the loading and unloading port of the cable cabin of the optical cable laying ship is used, and its working method includes the following steps: Step 1: Put the anti-jump protection device in place S1: unlock handle side positioning locking mechanism; Remove the swivel pin elbow from the extension handle and swivel socket. S2: Unlock the roller side positioning locking mechanism; Pull out the roller locking pin from the U-shaped slot pin hole at the upper end of the positioning support S3: Turn the anti-jump protection device to the working position; Rotate the device 90° counterclockwise from the standby position to the working position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the roller swing end positioning support. S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the positioning support; Step 2: Optical cable out of the cabin The optical cable exits the cabin from the cable hatch under the protection of the anti-jump protection device, and then reaches the Y-shaped cable trough through the fixed optical cable loading and unloading rack, and the optical cable exit is completed; Step 3: Return the anti-jump protection device to its original position After all the optical cables to be unloaded have been unloaded, return the anti-jump protection device to its original position; S1: Unlock handle side positioning locking mechanism Pull out the rotary positioning pin elbow from the extension handle and the rotary positioning socket; S2: Unlock the roller side positioning locking mechanism Pull out the roller locking pin from the slot pin hole at the upper end of the roller swing end positioning support; S3: Turn the anti-jump protection device to the standby position Rotate the device 90° clockwise from the working position to the standby position, so that the swing end of the rotating roller cuts into the U-shaped groove at the upper end of the positioning support of the roller swing end; S4: Locking handle side positioning locking mechanism Insert the rotating positioning pin elbow into the extension handle and the rotating positioning socket; S5: Locking roller side positioning locking mechanism The roller locking pin is inserted into the U-shaped slot pin hole at the upper end of the roller swing end positioning support; Step 4: The optical cable is unloaded from the cabin.

10. The working method of the roller-type anti-jump protection device for the loading and unloading port of the cable-laying ship according to claim 9 is characterized in that: Fixed optical cable loading and unloading racks are arranged on both sides outside the cable hatch opening, and a guide frame is arranged between the roller rotary seat fixed seat plate and the fixed optical cable loading and unloading racks.

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