Water inlet bridge special for plow type ditching

Abstract

The invention discloses a special water-entry bridge for plow type ditching, which comprises a water-entry bridge surface and water-entry bridge side baffles, the water-entry bridge side baffles are arranged on two sides of the water-entry bridge surface, lifting lugs are arranged on the water-entry bridge side baffles to lift the water-entry bridge, one end of the water-entry bridge surface is connected with a guide plate, a pipe cable is wound and unwound on one side of the guide plate, and the other end of the water-entry bridge surface is connected with the water-entry bridge surface. A lower protection plate is arranged at the end, away from the guide plate, of the water bridge deck, a limiting rod is connected to the water bridge side baffle so as to limit the retracted and released pipe cable, a welding fixing frame is connected to the end, away from the water bridge side baffle, of the water bridge deck, and the welding fixing frame is connected to the welding fixing point. According to the water entering bridge special for plow type ditching, by arranging the limiting rod capable of being opened and closed, it is guaranteed that pipe cable winding and unwinding are not affected, and meanwhile the situation that an umbilical cable and an air hose are affected by wind waves and flow and accidentally disengage from the water entering bridge in the operation process is avoided; compared with a traditional launching bridge, the trafficability of the pipe cable is remarkably improved, and the offshore plow type ditching operation efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering, and in particular relates to a special water entry bridge for plow-type trenching. Background Art

[0002] The operating principle of plow-type trenching is to place a trencher on the seabed, and the construction mother ship tows it to perform plow-type soil-breaking trenching operations, so that the submarine pipeline is finally located at the bottom of the trench, and it has a good protection effect after natural backfilling. When the trenching plow is working underwater, the communication system and the air-filled buoy are connected through the umbilical cable and air hose. The relevant pipes and cables are released from the deck and tied with buoys. After the two pipes and cables are laid, they are curved underwater, and the surface end floats on the sea surface by the action of the buoy to ensure safety.

[0003] During the long-distance cable retraction and deployment process, affected by environmental factors such as ocean currents and waves, if a water-entry bridge is not used, the position of the cables will be difficult to control and may easily become entangled and rub against other structures and personnel on the ship, causing damage to personnel or important cables such as umbilical cables and air hoses, posing a safety hazard.

[0004] Therefore, it is urgent to design a special water-entry bridge for plow-type trenching to solve the problem of long-distance pipe and cable retraction mentioned above. Summary of the invention

[0005] In order to solve the technical problem mentioned in the background technology that due to the influence of environmental factors such as ocean currents and waves, the position of pipes and cables will be difficult to control, and they are easy to be entangled and rubbed with other structures and personnel on the ship, causing damage to personnel or important pipes and cables such as umbilical cables and air hoses, and there are safety hazards, a plow-type trenching special water entry bridge is provided to solve the problem of long-distance pipe and cable retraction and deployment.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the plow-type trenching special water entry bridge of the present invention is as follows: A special water entry bridge for plow-type trenching comprises a water entry bridge deck and water bridge side guards. The water bridge side guards are arranged on both sides of the water entry bridge deck. Lifting ears are provided on the water bridge side guards to lift the water entry bridge. A guide plate is connected to one end of the water entry bridge deck. One side of the guide plate is used to retract and release pipes and cables. A lower protective plate is provided at the end of the water entry bridge deck away from the guide plate. A limiting rod is connected to the water bridge side guard to limit the retracted pipes and cables. A welding fixing frame is connected to the end of the water entry bridge deck away from the water bridge side guard. The welding fixing frame is connected to the welding fixing point.

[0007] Furthermore, the water bridge side guard comprises a first water bridge side guard and a second water bridge side guard, the first water bridge side guard and the second water bridge side guard are respectively welded to both sides of the bridge deck of the water inlet bridge, and the first water bridge side guard and the second water bridge side guard are respectively connected to guide plates.

[0008] Furthermore, the guide plate includes a first guide plate and a second guide plate, the first guide plate is connected to one end of the first water bridge side stop, and the second guide plate is connected to one end of the second water bridge side stop.

[0009] Furthermore, the protective plate includes a first protective plate and a second protective plate, the first protective plate is connected to an end of the first water bridge side stop away from the first guide plate, and the second protective plate is connected to an end of the second water bridge side stop away from the second guide plate.

[0010] Furthermore, a plurality of lifting ears are respectively provided on the first water bridge side guard and the second water bridge side guard, and the plurality of lifting ears are vertically welded to the first water bridge side guard and the second water bridge side guard.

[0011] Furthermore, two ends of the limit rod are respectively connected to the first water bridge side stop and the second water bridge side stop.

[0012] Furthermore, a first welding fixing frame is provided on the side of the water inlet bridge deck away from the first water bridge side guard and the second water bridge side guard, and the first welding fixing frame is welded to the first fixing welding point.

[0013] Furthermore, a second welding fixing frame is provided at one end of the bridge deck of the water entry bridge, the second welding fixing frame is spaced apart from the first welding fixing frame, and the second welding fixing frame is welded to the second fixing welding point.

[0014] Furthermore, the first guide plate and the second guide plate are both arc-shaped plates, so that the first guide plate and the second guide plate are bell-shaped as a whole.

[0015] Furthermore, the deck of the water entry bridge is arranged in an arc shape.

[0016] The special water entry bridge for ploughing trenching of the present invention has the following advantages: By setting an openable and closable limit rod, it can not only ensure that the retraction and release of pipes and cables are not affected, but also prevent the umbilical cable and air hose from being accidentally detached from the water launching bridge due to the influence of wind and wave currents during operation; compared with the traditional launching bridge, the passability of the pipes and cables in this application is significantly improved, and the efficiency and safety of offshore plowing trenching operations are greatly improved. The water launching bridge is made of structural steel, and its strength and reliability are strictly verified, so there is sufficient guarantee for safety; even when the umbilical cable and air hose are accidentally broken, the pipes and cables can be effectively controlled to prevent a large-scale sweep, thereby ensuring the safety of personnel and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the special water entry bridge for plow-type trenching of the present invention; Figure 2 A top view of the special water entry bridge for plow-type trenching of the present invention; Figure 3 It is a side view of the special water entry bridge for plough-type trenching of the present invention.

[0018] Description of the markings in the figure: 1. Bridge deck of water inlet bridge; 2. First water bridge side stop; 3. Second water bridge side stop; 4. Lifting lug; 5. Limit rod; 6. First guide plate; 7. Second guide plate; 8. First protective plate; 9. Second protective plate; 10. First welding fixing frame; 11. Second welding fixing frame. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0021] Please refer to the attached Figure 1 To Attachment Figure 3 The present invention describes a special water entry bridge for plough-type trenching.

[0022] like Figure 1 As shown, the special water entry bridge for plow-type trenching in the present invention includes a water entry bridge deck 1 and water bridge side guards. The water bridge side guards are arranged on both sides of the water entry bridge deck 1. The water bridge side guards are provided with lifting ears 4 for lifting the water entry bridge. One end of the water entry bridge deck 1 is connected with a guide plate, and one side of the guide plate is used to retract and release pipes and cables. A lower protective plate is provided at the end of the water entry bridge deck 1 away from the guide plate. A limiting rod 5 is connected to the water bridge side guard to limit the retracted pipes and cables. The end of the water entry bridge deck 1 away from the water bridge side guard is connected with a welding fixing frame, and the welding fixing frame is connected to the welding fixing point.

[0023] By providing an openable and closable limit rod 5, it is ensured that the retraction and release of the pipe and cable are not affected, and at the same time, the umbilical cable and the air hose are prevented from being accidentally detached from the water launching bridge due to the influence of wind and wave currents during operation; compared with the traditional launching bridge, the passability of the pipe and cable of the present application is significantly improved, and the efficiency and safety of offshore plowing trenching operations are greatly improved. The water launching bridge is made of structural steel, and its strength and reliability are strictly verified, so there is sufficient guarantee for safety; even when the umbilical cable and the air hose are accidentally broken, the pipe and cable can be effectively controlled not to cause a large-scale sweep, thereby ensuring the safety of personnel and equipment.

[0024] Further, if Figure 1 and Figure 2 As shown, the water bridge side guard includes a first water bridge side guard 2 and a second water bridge side guard 3, the first water bridge side guard 2 and the second water bridge side guard 3 are respectively welded to both sides of the water inlet bridge deck 1, and the first water bridge side guard 2 and the second water bridge side guard 3 are respectively connected with guide plates; the guide plates include a first guide plate 6 and a second guide plate 7, the first guide plate 6 is connected to one end of the first water bridge side guard 2, and the second guide plate 7 is connected to one end of the second water bridge side guard 3; the protective plates include a first protective plate 8 and a second protective plate 9, the first protective plate 8 is connected to one end of the first water bridge side guard 2 away from the first guide plate 6, and the second protective plate 9 is connected to one end of the second water bridge side guard 3 away from the second guide plate 7.

[0025] In the present embodiment, preferably, the first water bridge side guard 2 and the second water bridge side guard 3 are plates of the same shape and size, and the first water bridge side guard 2 and the second water bridge side guard 3 are respectively vertically welded at both ends of the water inlet bridge deck 1, and one end of the first water bridge side guard 2 and the second water bridge side guard 3 are respectively connected with a guide plate to play a guiding role when recovering the pipe and cable.

[0026] Preferably, the first guide plate 6 and the second guide plate 7 have the same shape and size, the first guide plate 6 is welded to one end of the first water bridge side baffle 2, and the second guide plate 7 is welded to one end of the second water bridge side baffle 3; the first protective plate 8 is welded to one end of the first water bridge side baffle 2 away from the first guide plate 6, and the second protective plate 9 is welded to one end of the second water bridge side baffle 3 away from the second guide plate 7, thereby guiding the pipe and cable to the recovery area for recovery.

[0027] Further, if Figure 1 and Figure 3 As shown, a plurality of lifting ears 4 are respectively provided on the first water bridge side guard 2 and the second water bridge side guard 3, and the plurality of lifting ears 4 are vertically welded to the first water bridge side guard 2 and the second water bridge side guard 3; the two ends of the limit rod 5 are respectively connected to the first water bridge side guard 2 and the second water bridge side guard 3; a first welding fixing frame 10 is provided on the side of the water inlet bridge deck 1 away from the first water bridge side guard 2 and the second water bridge side guard 3, and the first welding fixing frame 10 is welded to the first fixed welding point.

[0028] In this embodiment, a plurality of lifting ears 4 are welded to the first water bridge side guard 2 and the second water bridge side guard 3, respectively, and the plurality of lifting ears 4 are vertically arranged on the first water bridge side guard 2 and the second water bridge side guard 3; preferably, the first water bridge side guard 2 and the second water bridge side guard 3 are respectively provided with two lifting ears 4 and anti-slip guardrails, which are convenient for lifting and on-site installation, and can effectively prevent the pipes and cables from falling out of the water entry bridge under the influence of wind and waves during use.

[0029] One end of the limiting rod 5 is welded to the first water bridge side block 2, and the end away from the first water bridge side block 2 is welded to the second water bridge side block 3, so that the limiting rod 2 is erected on the water entry bridge; preferably, a first welding fixing frame 10 is welded to the lower part of the bridge deck 1 of the water entry bridge, and the first welding fixing frame 10 is welded to the first fixed welding point to fix the bridge deck 1 of the water entry bridge.

[0030] Further, if Figure 1 As shown, a second welded fixing frame 11 is provided at one end of the water entry bridge deck 1, the second welded fixing frame 11 is spaced apart from the first welded fixing frame 10, and the second welded fixing frame 11 is welded to the second fixed welding point; the first guide plate 6 and the second guide plate 7 are both arc-shaped plates, so that the first guide plate 6 and the second guide plate 7 are bell-shaped as a whole; the water entry bridge deck 1 is arranged in an arc shape.

[0031] In this embodiment, preferably, the second welding fixing frame 11 is arranged at one end of the lower part of the bridge deck 1 of the water entry bridge, where the first protective plate 8 and the second protective plate 9 are provided. The first welding fixing frame 10 and the second welding fixing frame 10 are arranged at intervals, and the second welding fixing frame 10 is welded to the second fixed welding point, thereby realizing the overall fixation of the water entry bridge.

[0032] The overall structural design of the launching bridge fits the stern of the operating vessel and is provided with a first protective plate 8 and a second protective plate 9, which effectively prevents the buoy tied thereon from drilling into the bottom of the launching bridge during the recovery of the pipes and cables, causing the recovery to be stuck and the buoys and pipes and cables to be damaged, thereby improving the safety of the pipes and cables and the operating efficiency and reducing the loss of the buoys.

[0033] Preferably, the first guide plate 6 and the second guide plate 7 are arc plates of the same shape and size, so that the first guide plate 6 and the second guide plate 7 form a bell mouth, which is convenient for the passage of the pipe and cable and effectively prevents accidental wear during the process of retracting and releasing the pipe and cable.

[0034] The working principle of the special water entry bridge for ploughing trenching in the present invention is as follows: First, check the water bridge lifting lug 4 to see if it meets the relevant lifting specifications and requirements. Use a ship crane or a car crane to lift the water bridge to the predetermined installation position, set up an auxiliary installation scaffolding, and have professionals weld and fix the first welding fixing frame 10 and the second welding fixing frame 11 of the water bridge. After the welding points are processed, dismantle the auxiliary scaffolding. Then, check the stability of the water entry bridge body and its upper limit rod 5, make the limit rod 5 in the open state, lift the trenching plow off the deck, and place the umbilical cable and air hose in the water entry bridge. Slowly lower the trenching plow, tie the buoy to the umbilical cable and air hose, and monitor whether the cable and the buoy are released smoothly through the water entry bridge deck, and observe whether there is interference or entanglement with the first protective plate 8 and the second protective plate 9. After the trenching plow is located on the seabed, close the limit rod 5 of the water entry bridge to prevent the umbilical cable and air hose from jumping out of the groove due to wind and wave during the towing cable arrangement and trenching operation;

[0035] Then, the recovery process is the reverse process of the above release process. The umbilical cable and air hose are recovered normally. It is observed whether the umbilical cable is located in the first water bridge side block 2 and the second water bridge side block 3. Under the guidance of the water bridge, it is avoided to interfere with the hull structure, damage the cable, and lose the buoy; Finally, when the ship moves above the underwater trenching plow, the water entry bridge limit rod 5 is opened, and the cable is continuously recovered until the trenching plow returns to the ship deck. The deck workers check the use status of the water entry bridge and proceed to the next trenching operation.

[0036] Based on the special water entry bridge for plow-type trenching, the present invention provides an openable and closable limit rod 5, which not only ensures that the retraction and release of pipes and cables are not affected, but also prevents the umbilical cable and air hose from being accidentally detached from the water entry bridge due to the influence of wind and wave flow during operation; compared with the traditional launching bridge, the passability of the pipes and cables of the present application is significantly improved, and the efficiency and safety of offshore plow-type trenching operations are greatly improved. The water entry bridge is made of structural steel, and its strength and reliability are strictly verified, so there is sufficient guarantee in terms of safety; even when the umbilical cable and air hose are accidentally broken, the pipes and cables can be effectively controlled not to cause a large-scale sweep, thereby ensuring the safety of personnel and equipment.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A special water entry bridge for plow-type trenching, characterized in that: It includes a water-entering bridge deck and water-entering bridge side guards. The water-entering bridge side guards are arranged on both sides of the water-entering bridge deck. The water-entering bridge side guards are provided with lifting ears for lifting the water-entering bridge. One end of the water-entering bridge deck is connected with a guide plate. One side of the guide plate is used to retract and release pipes and cables. A lower protective plate is provided at the end of the water-entering bridge deck away from the guide plate. A limiting rod is connected to the water-entering bridge side guard to limit the retracted pipes and cables. One end of the water-entering bridge deck away from the water-entering bridge side guard is connected with a welding fixing frame. The welding fixing frame is connected to the welding fixing point.

2. The special water entry bridge for ploughing trenching according to claim 1, characterized in that: The water bridge side guard comprises a first water bridge side guard and a second water bridge side guard, the first water bridge side guard and the second water bridge side guard are respectively welded to both sides of the bridge deck of the water inlet bridge, and the first water bridge side guard and the second water bridge side guard are respectively connected with guide plates.

3. The special water entry bridge for plow-type trenching according to claim 2, characterized in that: The guide plate comprises a first guide plate and a second guide plate, wherein the first guide plate is connected to one end of the first water bridge side stop, and the second guide plate is connected to one end of the second water bridge side stop.

4. The special water entry bridge for plow-type trenching according to claim 3 is characterized in that: The protection plate includes a first protection plate and a second protection plate. The first protection plate is connected to an end of the first water bridge side block away from the first guide plate, and the second protection plate is connected to an end of the second water bridge side block away from the second guide plate.

5. The special water entry bridge for plow-type trenching according to claim 2, characterized in that: A plurality of lifting ears are respectively arranged on the first water bridge side guard and the second water bridge side guard, and the plurality of lifting ears are vertically welded on the first water bridge side guard and the second water bridge side guard.

6. The special water entry bridge for plow-type trenching according to claim 1, characterized in that: The two ends of the limit rod are respectively connected to the first water bridge side stop and the second water bridge side stop.

7. The special water entry bridge for plow-type trenching according to claim 2, characterized in that: A first welding fixing frame is provided on the side of the water inlet bridge deck away from the first water bridge side guard and the second water bridge side guard, and the first welding fixing frame is welded to the first fixing welding point.

8. The special water entry bridge for ploughing trenching according to claim 7, characterized in that: A second welding fixing frame is provided at one end of the bridge deck of the water entry bridge. The second welding fixing frame is spaced apart from the first welding fixing frame, and the second welding fixing frame is welded to the second fixing welding point.

9. The special water entry bridge for plow-type trenching according to claim 3, characterized in that: The first guide plate and the second guide plate are both arc-shaped plates, so that the first guide plate and the second guide plate are bell-shaped as a whole.

10. The special water entry bridge for plow-type trenching according to claim 8, characterized in that: The deck of the water entry bridge is arc-shaped.

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