Underwater sand bag automatic throwing device for subsea pipeline protection

Abstract

The invention relates to an automatic underwater sand bag throwing device for subsea pipeline protection and relates to the technical field of subsea pipeline laying, the throwing device comprises a crane, a throwing frame, an opening and closing door and an opening and closing mechanism, the throwing frame is used for being connected with the crane, and a throwing opening is formed in the bottom of the throwing frame; the opening and closing door rotates and is used for controlling opening and closing of the throwing opening, and the opening and closing mechanism comprises a sliding block which is vertically arranged on the outer side wall of the throwing frame in a sliding mode; the two ends of the connecting rod are rotationally connected with the sliding block and the opening and closing door correspondingly; the moving assembly is used for driving the sliding block to move. According to the device, the throwing opening is closed, the sand bag is placed in the throwing frame, the crane starts to transport the throwing frame to the throwing point, the moving assembly starts to open the throwing opening, and the sand bag is released to conduct burying protection on the subsea pipeline, so that the risk of damage to the pipeline is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of submarine pipeline laying, and in particular to an automatic underwater sandbag throwing device for submarine pipeline protection. Background Art

[0002] After submarine pipelines (optical cables, electrical cables, or optoelectronic composite cables) are laid, they are usually buried to prevent them from moving or being damaged by fishing nets or ships anchoring. In areas where burial protection is not possible on the hard rock surface of the seabed or in shallow burial areas, sand bags are usually placed on top of the submarine pipelines to protect them.

[0003] In the prior art, when placing sandbags, sandbags are usually placed directly into the water from the deck of the ship, or sandbags are grabbed by a crane on the ship for placement. The first method has poor positioning accuracy of sandbag placement, so more sandbags need to be placed to protect the pipeline, and multiple sandbag placements are required, which takes a long time. In addition, the pipeline is easily damaged during the sandbag placement process. The second method has higher placement accuracy and can reduce damage to the pipeline, but it takes longer time than the first method, which reduces construction efficiency. Summary of the Invention

[0004] In order to reduce the risk of damage to pipelines and improve construction efficiency, the present application provides an underwater sandbag automatic throwing device for submarine pipeline protection.

[0005] This application provides an automatic underwater sandbag throwing device for submarine pipeline protection, which adopts the following technical solutions: An automatic underwater sandbag throwing device for submarine pipeline protection includes a crane, a throwing frame, an opening and closing door, and an opening and closing mechanism. The crane is used to be installed on a ship. The throwing frame is used to be connected to the crane and has a throwing port at the bottom. The throwing frame is controlled to move by the crane. The opening and closing door is rotatably mounted on the throwing frame and is used to control the opening and closing of the throwing port. The opening and closing mechanism is used to drive the opening and closing door to rotate. The opening and closing mechanism includes: A sliding block is vertically slidingly arranged on the outer side wall of the throwing frame; A connecting rod, with both ends rotatably connected to the sliding block and the opening and closing door respectively; The moving component is used to drive the sliding block to move.

[0006] By adopting the above technical solution, the moving component starts to drive the sliding block to move, and the movement of the sliding block drives the opening and closing door to rotate through the connecting rod, thereby closing or opening the discharge port; closing the discharge port, placing the sandbags in the discharge frame in advance, and the crane starts to transport the discharge frame, and the discharge frame moves down close to the discharge point. After reaching the discharge point, the crane stops to position the discharge frame, and the moving component starts to open the discharge port. At the same time, the sandbags will also push the opening and closing door to open, thereby releasing the sandbags to bury the submarine pipeline; the crane starts to drive the discharge frame to move upward, so that the discharge frame moves above the water surface, and the moving component drives the opening and closing door to rotate and close the discharge port, and then repeats the process, thereby reducing the risk of damage to the pipeline and improving construction efficiency.

[0007] Optionally, the mobile component includes: A hydraulic cylinder is provided on the throwing frame and has a piston rod connected to the sliding block; A hydraulic station, which is used to be installed on a ship and provide hydraulic pressure; The hydraulic pipe is arranged on the hydraulic station and connected to the hydraulic cylinder. The hydraulic station is used to control the start and stop of the hydraulic cylinder through the hydraulic pipe.

[0008] By adopting the above technical solution, the movement of the throwing frame drives the hydraulic cylinder to move, the movement of the hydraulic cylinder pulls the hydraulic pipe to move, and the hydraulic station is started to control the hydraulic cylinder through the hydraulic pipe to start driving the sliding block to move, thereby driving the opening and closing door to realize the opening and closing of the throwing port.

[0009] Optionally, two opening and closing doors are provided at intervals and the connection with the throwing frame is located on the opposite side of the two opening and closing doors.

[0010] By adopting the above technical solution, the design of two opening and closing doors allows the sand bags to fall from the middle position of the throwing frame when they fall, so that the force exerted on the throwing frame when the sand bags fall is balanced, thereby improving the stability when throwing the sand bags, speeding up the throwing speed and improving construction efficiency.

[0011] Optionally, the two opening and closing doors are provided with positioning components for positioning, and the positioning components include: The positioning teeth and the positioning blocks are rotatably mounted on opposite sides of the two opening and closing doors. A plurality of positioning grooves are provided in a circumferential array on the positioning blocks. When the two opening and closing doors are closed, the positioning teeth are in a horizontal state and are inserted into the positioning grooves to form a certain extrusion force between the positioning grooves. Positioning piece, set on the two connecting rods and used to position the positioning teeth and positioning blocks By adopting the above technical solution, when the two opening and closing doors approach each other, the positioning teeth gradually approach the positioning groove and contact therewith, and at the same time, the two connecting rods approach each other, that is, approach the positioning teeth and the positioning block, thereby driving the positioning member to approach the positioning teeth and the positioning block; when the two opening and closing doors are pressed against each other to close the throwing port, the positioning teeth are in a horizontal state and are plugged into the positioning groove and a certain extrusion pressure is formed between the two. The two positioning members position the positioning gear and the positioning block, the extrusion pressure of the positioning teeth and the positioning groove, and the force of the positioning member on the positioning teeth and the positioning block, the two forces cooperate with the moving assembly to position the opening and closing doors, thereby further improving the stability when throwing sand bags.

[0012] The two opening and closing doors move away from each other, and the positioning teeth and the positioning block rotate, so that the positioning teeth and the positioning block are disengaged, and the two positioning parts are also disengaged from the positioning teeth and the positioning block, thereby realizing that the two opening and closing doors open the discharge port.

[0013] Optionally, a plurality of tooth-shaped grooves are formed in a circumferential array on the positioning teeth, and the positioning members are arranged on two connecting rods; when the two opening and closing doors are closed, the two positioning members are respectively inserted into the tooth-shaped grooves and the positioning grooves and form a certain extrusion force between each other and are used to position the positioning teeth and the positioning blocks.

[0014] By adopting the above technical solution, the positioning piece is plugged into and matched with the toothed groove and the positioning groove, and a certain extrusion pressure is formed between the positioning piece and the toothed groove and the positioning groove, so as to realize the positioning of the two opening and closing doors. At the same time, when the two opening and closing doors are opened, the forces at multiple locations mentioned above are overcome to achieve unlocking, which further improves the stability when throwing sand bags and improves construction efficiency.

[0015] Optionally, a fixed ring is provided at the middle position of the top of the throwing frame, and the crane includes a wire rope, a winding mechanism, and a hook. The wire rope is provided on the winding mechanism and is used to drive the wire rope to move through the winding mechanism. The hook is provided on the wire rope and is hooked on the fixed ring for positioning.

[0016] By adopting the above technical solution, the hook is set on the fixed ring, the winding mechanism is started to drive the wire rope to move, and the wire rope movement drives the throwing frame to throw sand bags to bury the submarine pipeline. At the same time, the spare throwing frame is placed on the ship, and then the sand bags are placed on the spare throwing frame. The winding mechanism is started to drive the throwing frame to move, so that the empty throwing frame is placed on the ship, and then the hook is set to the throwing frame that is already filled with sand bags, and then the sand bags are continued to be thrown. At the same time, sand bags are placed in the throwing frame, which greatly reduces the probability of waiting during the construction process, thereby improving construction efficiency.

[0017] Optionally, the winding mechanism includes: A mounting rod, which is rotatably mounted on the vessel via a mounting plate and has a top end tilted upward; A boom is tiltably and slidingly arranged on a mounting rod and rotatably mounted with a guide wheel; a telescopic member, disposed on the mounting rod and used to drive the boom to move; A driving member, used for driving the mounting plate to rotate; The winding drum is rotatably mounted on the mounting drum and is used for winding or releasing the wire rope, and the wire rope is guided around the guide wheel.

[0018] By adopting the above technical solution, the driving part drives the installation rod, telescopic part, boom and winding drum to rotate simultaneously, the telescopic part drives the boom to rotate, the winding drum rotates to release or wind up the wire rope, and the wire rope drives the hook and the throwing frame to move, so that the throwing frame can move in multiple directions, which improves the convenience during the movement and improves the construction efficiency.

[0019] Optionally, two sliding blocks are provided and are located at both ends of the throwing frame, and the moving component includes: Two mounting rings are respectively arranged on the upper surfaces of the two sliding blocks; Two pull ropes are arranged on the winding mechanism through a connecting mechanism and are provided with pull hooks hooked on two mounting rings; the winding mechanism drives the steel wire rope and the pull rope to move simultaneously and cooperates to drive the throwing frame to move. When the sandbag needs to be thrown, the steel wire rope stops and the two pull ropes are extended at the same time, so that the opening and closing door opens under the action of the gravity of the sandbag and the sandbag is thrown.

[0020] By adopting the above technical solution, two pull hooks are set on two mounting rings, so that the opening and closing door rests on the bottom of the throwing frame to close the throwing port, and the winding mechanism drives the wire rope and the pull rope to move, thereby driving the throwing frame to move. When it moves to the throwing point, the winding mechanism controls the wire rope to stop moving, and the two pull ropes are extended, and the sandbag pushes the opening and closing door to open, so as to realize the throwing of the sandbag. After the throwing is completed, the winding mechanism controls the wire rope and the two pull ropes to move at the same time, driving the throwing frame to move above the water surface, and the movement of the two pull ropes drives the two opening and closing doors to rotate and close the throwing port, and then the throwing frame is placed on the ship, thereby realizing the throwing construction operation.

[0021] Compared with the use of hydraulic components in the moving components, the movement of the throwing frame and the opening and closing of the throwing port are achieved through two pull ropes and a steel wire rope. There is no need to use a complex hydraulic system, and there is no need to design a long hydraulic pipe, which makes the structure more stable and lower in cost. The two pull ropes realize the opening and closing of the throwing port. At the same time, the two pull ropes and the steel wire rope can also drive the throwing frame to move, making the throwing frame more stable during movement, thereby making the movement of the throwing frame more stable and quick, further improving the construction efficiency, and the movement of the steel wire rope and the pull rope is achieved at the same time through the winding mechanism, making the structure more stable and compact.

[0022] Optionally, the connecting mechanism includes: A take-up drum, rotatably mounted on the take-up mechanism and used to reel in or unwind the two draw ropes; The control component is used to control the take-up drum and the winding mechanism to be connected to each other and then drive the wire rope and the pull rope to move simultaneously, or to control the take-up drum to be separated from the winding mechanism and position the wire rope.

[0023] By adopting the above technical solution, the control component controls the connection between the wire take-up drum and the winding mechanism, and the wire take-up drum and the winding mechanism are started simultaneously to drive the wire rope and the two pull ropes to move simultaneously, which greatly improves the synchronization rate of the movement of the wire rope and the two pull ropes, making the construction process more stable; the two pull ropes need to move separately, and the control component controls the wire take-up drum to disengage from the winding mechanism and position the wire rope, and the wire take-up drum rotates to reel in or release the two pull ropes, thereby realizing the simultaneous movement of the wire rope and the pull rope or the movement of the pull rope alone, thereby improving construction efficiency.

[0024] Optionally, the control component includes: A fixed plate, arranged on the winding mechanism; The toothed disc is slidably arranged on the winding mechanism and has toothed portions and key teeth on its two opposite side walls; The control member is used to drive the toothed disk to move and make the toothed portion engage with the fixed plate to position the wire rope, or to make the key teeth engage with the take-up drum and start the winding mechanism and the take-up drum at the same time to realize the simultaneous movement of the wire rope and the pull rope.

[0025] By adopting the above technical solution, the control member drives the toothed disk to move, so that the toothed portion is close to the fixed plate and the key teeth are away from the take-up disk, the toothed portion is plugged into the fixed plate and the key teeth are still in a plugged state with the take-up disk, the toothed disk continues to move, so that the toothed portion is in a fully plugged-in state with the fixed plate, and the key teeth are completely disengaged from the take-up disk, so that the toothed disk and the wire rope can be positioned, and the key teeth are completely disengaged from the take-up disk, and the take-up disk rotates to drive the two pull ropes to move separately; or, the control member is started, so that the toothed portion is away from the fixed plate and the key teeth are close to the take-up disk, so that the key teeth are plugged into the take-up disk, so that the take-up disk and the take-up mechanism are started so that the wire rope and the stretching move simultaneously.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By closing the jettison port, sand bags are placed in the jettisoning frame. The crane is started to transport the jettisoning frame to the jettisoning point. The mobile component is started to open the jettisoning port and release sand bags to bury the submarine pipeline. The crane is started to drive the jettisoning frame upward. After the jettisoning frame moves above the water surface, the mobile component drives the opening and closing door to rotate and close the jettisoning port. The process is then repeated, thereby reducing the risk of damage to the pipeline and improving construction efficiency.

[0027] 2. The movement of the throwing frame and the opening and closing of the throwing port are achieved by two pull ropes and a steel wire rope, without the need for a complex hydraulic system or the design of a long hydraulic pipe, making the structure more stable and lower in cost; the two pull ropes are used to open and close the throwing port, and at the same time, the two pull ropes and the steel wire rope can also drive the throwing frame to move, making the throwing frame more stable during movement, thereby making the movement of the throwing frame more stable and quick, further improving construction efficiency, and the movement of the steel wire rope and the pull rope is achieved simultaneously through the winding mechanism, making the structure more stable and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of a first embodiment of a throwing device; Figure 2 It is a schematic diagram of the partial structure of the throwing device in Example 1; Figure 3 It is a structural diagram of a second embodiment of a throwing device; Figure 4 2. It is a structural diagram of a third embodiment of a throwing device; Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle; Figure 6 It is a partial structural diagram of the third embodiment of the throwing device.

[0029] Reference numerals: 1. ship; 11. launching frame; 12. opening and closing door; 13. fixing frame; 14. fixing ring; 15. rotating shaft; 2. crane; 21. wire rope; 22. hook; 23. winding mechanism; 24. mounting rod; 241. mounting plate; 25. boom; 251. guide wheel; 252. guide wheel; 26. telescopic member; 27. winding plate; 28. winding motor; 3. opening and closing mechanism; 31. sliding block; 32. connecting rod; 3 3. Connecting block; 4. Moving assembly; 41. Hydraulic cylinder; 42. Hydraulic station; 5. Positioning assembly; 51. Positioning teeth; 52. Positioning block; 53. Positioning piece; 54. Toothed groove; 55. Positioning groove; 61. Mounting ring; 62. Pull rope; 63. Hook; 7. Connecting mechanism; 71. Take-up reel; 72. Take-up motor; 8. Control assembly; 81. Fixed plate; 82. Toothed disc; 83. Control groove; 84. Toothed portion; 85. Key teeth. DETAILED DESCRIPTION

[0030] The following is a further detailed description of this application.

[0031] The embodiment of the present application discloses an automatic underwater sandbag throwing device for protecting submarine pipelines.

[0032] Reference Figure 1 and Figure 2The automatic underwater sandbag throwing device for submarine pipeline protection includes a crane 2, a throwing frame 11, an opening and closing door 12, and an opening and closing mechanism 3. The crane 2 is used to be set on a ship 1; the throwing frame 11 is used to be connected to the crane 2 and has a throwing port at the bottom. The crane 2 is used to control the movement of the throwing frame 11; the opening and closing door 12 is rotatably installed on the throwing frame 11 through a rotating shaft 15, and the opening and closing mechanism 3 is used to drive the two opening and closing doors 12 to rotate and control the opening and closing of the throwing port. The throwing port is closed to realize the loading of sandbags into the throwing frame 11 for transportation, or the throwing port is opened to realize the throwing of sandbags and use them to bury the submarine pipeline.

[0033] The throwing frame 11 is a rectangular frame with an open top, and a fixing frame 13 extending to the top of the throwing frame 11 is fixedly installed on the top of the throwing frame 11; two opening and closing doors 12 are arranged at intervals, and the two opening and closing doors 12 are abutted against the lower surface of the throwing frame 11 after rotation to close the throwing opening; or, the two opening and closing doors 12 are rotated to open the throwing opening, so as to realize the control of opening and closing the throwing opening, and the rotating shaft 15 located on the two opening and closing doors 12 is located on the opposite side of the two opening and closing doors 12, the rotating shaft 15 is horizontal and the axis is parallel to the length direction of the throwing frame 11.

[0034] The opening and closing mechanism 3 includes a sliding block 31, a connecting rod 32 and a moving assembly 4. There are two sliding blocks 31 and they are vertically slidably installed on the outer walls at both ends of the throwing frame 11. The two opening and closing doors 12 are arranged in a mirror-symmetrical manner about the sliding block 31; the bottom ends of the two connecting rods 32 are fixedly installed with connecting blocks 33 that are rotatably connected to the two opening and closing doors 12, and the connecting blocks 33 are located near the opposite end of the two opening and closing doors 12; the top ends of the two connecting rods 32 are rotatably connected to the sliding blocks 31, and each sliding block 31 is provided with two connecting rods 32.

[0035] The moving assembly 4 is used to drive the sliding block 31 to move vertically. The moving assembly 4 includes a hydraulic cylinder 41, a hydraulic station 42, and a hydraulic pipe. Two hydraulic cylinders 41 are arranged at intervals, corresponding to the two sliding blocks 31. The hydraulic cylinders 41 are fixedly mounted on the side wall of the launching frame 11 and are arranged vertically. The hydraulic cylinders 41 are located above the sliding blocks 31, and the piston rods are fixedly connected to the upper surfaces of the sliding blocks 31. The hydraulic station 42 is fixedly mounted on the vessel 1. The hydraulic pipes are fixedly mounted on the hydraulic station 42 and are fixedly connected to the hydraulic cylinders 41. Two hydraulic pipes are arranged at intervals and realize the input and output of liquid to the hydraulic cylinders 41, thereby realizing the control of driving the hydraulic cylinders 41 to start or stop.

[0036] The hydraulic station 42 controls the hydraulic cylinder 41 to start, and the hydraulic cylinder 41 starts to drive the two sliding blocks 31 to move. The movement of the two sliding blocks 31 drives the two opening and closing doors 12 to rotate, thereby realizing the control of opening and closing the discharge port. At the same time, the hydraulic pipe is a hose and is convenient for giving way when the discharge frame 11 moves.

[0037] The crane 2 is used to be installed on the ship 1. A fixing ring 14 is fixedly installed at the middle position of the top of the fixing frame 13. The axis of the fixing ring 14 is horizontal and perpendicular to the length direction of the throwing frame 11; the crane 2 includes a wire rope 21, a winding mechanism 23 and a hook 22. The wire rope 21 is arranged on the winding mechanism 23. The winding mechanism 23 controls the movement of the wire rope 21. The hook 22 is fixedly installed on one end of the wire rope 21, and the hook 22 is hooked on the fixing ring 14. The winding mechanism 23 starts to drive the wire rope 21 to move, thereby driving the throwing frame 11 to move.

[0038] The winding mechanism 23 includes a mounting rod 24, a boom 25, a telescopic member 26, a driving member 1 and a winding disk 27. A mounting disk 241 is vertically rotatably installed on the upper surface of the ship 1. The bottom end of the mounting rod 24 is fixedly mounted on the mounting disk 241, and the top end of the mounting rod 24 is tilted upward. The boom 25 is slidably mounted on the top end of the mounting rod 24, and the sliding direction of the boom 25 is parallel to the length direction of the mounting rod 24. The boom 25 extends obliquely upward away from one end of the mounting rod 24 to the outside of the mounting rod 24 and is rotatably mounted with a guide wheel 251.

[0039] The telescopic member 26 is a cylinder, which is fixedly mounted on the mounting rod 24. The piston rod of the telescopic member 26 is connected to the boom 25 and is used to move the boom 25; the driving member is a motor, which is fixedly mounted on the ship 1 and is used to drive the mounting disk 241 and the mounting rod 24 to rotate simultaneously; the winding disk 27 is rotatably mounted on the upper surface of the mounting disk 241 and is in a horizontal state. The winding disk 27 is used to wind up the wire rope 21, and a winding motor 28 that drives the winding disk 27 to rotate is fixedly mounted on the mounting disk 241.

[0040] The winding motor 28 drives the winding disk 27 to rotate and drive the wire rope 21 to move. The hook 22 is hooked on the fixed ring 14. The movement of the wire rope 21 drives the throwing frame 11 to move. At the same time, the driving part and the telescopic part 26 simultaneously start the movement of the wire rope 21. The winding motor 28, the driving part and the telescopic part 26 work together to realize the movement of the throwing frame 11, and realize the movement of the throwing frame 11 in multiple directions horizontally and vertically.

[0041] The sandbags are placed in the empty throwing frame 11 in advance, and the hook 22 is hooked on the fixing ring 14. The throwing frame 11 is moved up and then moved to the outside of the ship 1, so that the throwing frame 11 moves above the throwing point. The throwing frame 11 moves down close to the throwing point, and the hydraulic cylinder 41 starts to drive the two opening and closing doors 12 to rotate, thereby realizing the throwing of sandbags, so that the sandbags bury the submarine pipeline. After the throwing is completed, the throwing frame 11 moves up to above the water surface, and the hydraulic cylinder 41 drives the two opening and closing doors 12 to rotate against the throwing frame 11 and close the throwing port. Then the empty throwing frame 11 is placed on the ship 1, and then the throwing frame 11 is transported to throw sandbags, and the sandbags are placed in the empty throwing frame 11 at the same time. This is repeated in sequence, and at the same time the ship 1 can also move to drive the throwing frame 11 to move, thereby greatly improving the construction efficiency.

[0042] The working principle of the embodiment of this application is as follows: The sand bags are placed in the throwing frame 11 in advance, the hook 22 and the fixing ring 14 are connected, and the throwing frame 11 is transported above the throwing point. The throwing frame 11 moves down, and the hydraulic cylinder 41 starts to drive the two opening and closing doors 12 to rotate, and the sand bags are thrown to bury the submarine pipeline. After the throwing is completed, the throwing frame 11 moves up to above the water surface, and the hydraulic cylinder 41 drives the two opening and closing doors 12 to rotate and close the throwing port. Then, the throwing frame 11 is placed on the ship 1, and the sand bags are repeatedly thrown, thereby improving construction efficiency.

[0043] Example 2 Reference Figure 3 The difference between this embodiment and embodiment 1 is that positioning components 5 for positioning are provided on the two opening and closing doors 12 , and two positioning components 5 are provided and located at both ends of the opening and closing doors 12 .

[0044] The positioning assembly 5 includes a positioning tooth 51, a positioning block 52, and a positioning piece 53. The positioning tooth 51 and the positioning block 52 are rotatably installed on the opening and closing door 12 and are located near the opposite side of the two opening and closing doors 12. The rotation direction of the positioning tooth 51 and the positioning block 52 is horizontal and the axis is parallel to the length direction of the throwing frame 11. The positioning tooth 51 is formed with a plurality of tooth-shaped grooves 54 around its own rotation direction, and the positioning block 52 is formed with a plurality of positioning grooves 55 around the circumference of its own rotation direction axis. During the rotation and insertion of the positioning tooth 51 with the positioning groove 55, when the positioning tooth 51 contacts the positioning groove 55 before rotating to a horizontal state, a certain extrusion pressure is formed between the positioning tooth 51 and the tooth-shaped groove 54, and is used to position the two opening and closing doors 12.

[0045] There are two positioning members 53 and they are located on the two connecting blocks 33. When the two opening and closing doors 12 approach each other, the two positioning members 53 approach the positioning teeth 51 and the positioning blocks 52 respectively. When the positioning teeth 51 are in a horizontal state and are plugged into and positioned with the tooth-shaped groove 54, the two positioning members 53 are respectively plugged into and installed on the positioning groove 55 and the tooth-shaped groove 54 and form a certain extrusion force, so as to cooperate with the positioning teeth 51 and the tooth-shaped groove 54 to jointly position the two opening and closing doors 12; when the sliding block 31 drives the two opening and closing doors 12 away from each other, its action force can overcome the extrusion force between the positioning gear 51 wheel and the positioning groove 55, the two positioning members 53 and the positioning groove 55 and the tooth-shaped groove 54, so that the two opening and closing doors 12 move away from each other and open the discharge port.

[0046] The working principle of the embodiment of this application is as follows: The sliding block 31 moves through the two connecting rods 32 to drive the two opening and closing doors 12 to rotate, thereby driving the positioning teeth 51 to approach the positioning block 52, and the two connecting rods 32 are respectively close to the positioning teeth 51 and the positioning block 52, so that the driving positioning teeth 51 are plugged into the positioning groove 55 and form a certain extrusion pressure. At the same time, the two positioning parts 53 are respectively plugged into the positioning groove 55 and the tooth groove 54 to form a certain extrusion pressure, thereby greatly improving the stability of the two opening and closing doors 12 and improving construction efficiency.

[0047] Example 3 Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the moving component 4 includes two mounting rings 61 and two pull ropes 62. The top of the two sliding blocks 31 is vertically arranged. The two mounting rings 61 are fixedly installed on the top of the two sliding blocks 31, and the axis of the mounting ring 61 coincides with the axis of the fixed ring 14; the two pull ropes 62 are connected to the winding mechanism 23 through the connecting mechanism 7. The two pull ropes 62 are arranged corresponding to the two mounting rings 61 and are both provided with a pull hook 63 hooked on the mounting ring 61.

[0048] The winding mechanism 23 drives the wire rope 21 and the pull rope 62 to move simultaneously, thereby jointly driving the throwing frame 11 to move. When the throwing frame 11 moves to the throwing point, the wire rope 21 stops moving and is used to maintain the position of the throwing frame 11. The two pull ropes 62 move and extend at the same time, and the two opening and closing doors 12 open under the gravity of multiple sand bags, thereby realizing the throwing of sand bags; after the throwing is completed, the wire rope 21 and the two pull ropes 62 move at the same time to drive the throwing frame 11 to move above the ship 1, the wire rope 21 stops moving, and the two pull ropes 62 drive the two opening and closing doors 12 to close.

[0049] The wire rope 21 and the pull rope 62 move at the same time to place the throwing frame 11 onto the ship 1. At the same time, sand bags can be thrown into the previous throwing frame 11. The staff fills the spare throwing frame 11 with sand bags, and then directly hooks the hook 22 on the fixed ring 14 on the throwing frame 11 to be thrown, and the two pull hooks 63 are hooked on the two mounting rings 61. Then, the sand bags are continued to be thrown, and sand bags are loaded into the empty throwing frame 11 at the same time, thereby improving the throwing efficiency.

[0050] Reference Figure 4 and Figure 6 The connecting mechanism 7 includes a take-up drum 71 and a control component 8. The take-up drum 71 is coaxially connected to two wires and is used to reel in two pull ropes 62 respectively. The take-up drum 71 and the reel 27 are coaxially arranged and a certain installation space is formed between the two. A take-up motor 72 connected to the take-up drum 71 and used to drive the take-up drum 71 to rotate is fixedly installed on the installation disk 241; at the same time, a plurality of limiting wheels for limiting and guiding the wire rope 21 and the two pull ropes 62 are fixedly installed on the installation rod 24, so that the wire rope 21 and the two pull ropes 62 move according to a predetermined path, and two guide wheels 252 for guiding and positioning the two pull ropes 62 are rotatably installed on the top of the boom 25.

[0051] The control assembly 8 includes two fixed plates 81, a toothed disk 82 and a control component. The two fixed plates 81 are arranged at intervals, and the two winding disks 27 are rotatably mounted on the side walls on the opposite sides of the two fixed plates 81; a plurality of control grooves 83 are provided on the side wall of the fixed plate 81 close to the take-up disk 71 and arranged in a circular array around the axis of the winding disk 27; the toothed disk 82 is coaxially slidably sleeved on the winding disk 27, and the toothed disk 82 rotates simultaneously with the winding disk 27, and a toothed portion 84 and a key tooth 85 are fixedly mounted on the opposite side walls of the toothed disk 82, and the toothed portion 84 is located on the side of the toothed disk 82 close to the control groove 83.

[0052] The control component is used to drive the toothed disk 82 to move, so that the toothed portion 84 is plugged into the control groove 83, thereby cooperating with the winding motor 28 to jointly position the winding disk 27 and the wire rope 21; or, the key tooth 85 is plugged into and cooperated with the take-up disk 71, so that the winding disk 27 and the take-up disk 71 rotate at the same time, that is, the winding motor 28 and the take-up motor 72 drive the winding disk 27 and the take-up disk 71 to rotate at the same time, thereby improving the synchronization of the movement of the wire rope 21 and the pull rope 62.

[0053] The control component includes an electric push rod and a push block. The electric push rod is fixedly installed on the fixed plate 81, and the push block is fixedly installed on the piston rod of the electric push rod and is rotatably connected to the toothed disk 82. During the movement of the toothed disk 82, the toothed portion 84 and the control groove 83 are plugged in and the key teeth 85 are simultaneously plugged in with the winding disk 27, which reduces the probability of relying entirely on the winding motor 28 to position the winding disk 27 and the wire rope 21, and improves the stability during construction.

[0054] The working principle of the embodiment of this application is as follows: The steel wire rope 21 and the pull rope 62 move simultaneously to jointly drive the throwing frame 11 to move. When the throwing frame 11 moves to the throwing point, the steel wire rope 21 stops moving and is used to maintain the position of the throwing frame 11. The two pull ropes 62 move and extend at the same time. The two opening and closing doors 12 open the throwing opening under the gravity of multiple sand bags to achieve the throwing of sand bags. After the throwing is completed, the steel wire rope 21 and the two pull ropes 62 simultaneously drive the throwing frame 11 to move above the ship 1, the steel wire rope 21 stops moving, and the two pull ropes 62 drive the two opening and closing doors 12 to close.

[0055] The steel wire rope 21 and the pull rope 62 move simultaneously to place the throwing frame 11 on the vessel 1. After replacing the throwing frame 11, the sandbags are continued to be thrown, and sandbags are loaded into the empty throwing frame 11 at the same time, thereby improving construction efficiency and safety.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic underwater sandbag throwing device for submarine pipeline protection, characterized by: The invention comprises a crane (2), a throwing frame (11), an opening and closing door (12), and an opening and closing mechanism (3), wherein the crane (2) is used to be arranged on a ship (1), the throwing frame (11) is used to be connected to the crane (2), and a throwing opening is opened at the bottom thereof, and the throwing frame (11) is controlled to move by the crane (2); the opening and closing door (12) is rotatably mounted on the throwing frame (11) and is used to control the opening and closing of the throwing opening; the opening and closing mechanism (3) is used to drive the opening and closing door (12) to rotate, and the opening and closing mechanism (3) comprises: A sliding block (31) is vertically slidingly arranged on the outer side wall of the throwing frame (11); A connecting rod (32), both ends of which are rotatably connected to the sliding block (31) and the opening and closing door (12); The moving assembly (4) is used to drive the sliding block (31) to move.

2. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 1 is characterized in that: The mobile component (4) comprises: A hydraulic cylinder (41) is provided on the throwing frame (11) and the piston rod is connected to the sliding block (31); A hydraulic station (42) for being arranged on the ship (1) and providing hydraulic pressure; A hydraulic pipe is provided on a hydraulic station (42) and connected to the hydraulic cylinder (41); the hydraulic station (42) is used to control the start and stop of the hydraulic cylinder (41) through the hydraulic pipe.

3. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 1 is characterized in that: Two opening and closing doors (12) are provided at intervals, and the connection with the throwing frame (11) is located on the opposite side of the two opening and closing doors (12).

4. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 3 is characterized by: The two opening and closing doors (12) are provided with positioning components (5) for positioning, and the positioning components (5) include: The positioning teeth (51) and the positioning blocks (52) are rotatably mounted on opposite sides of the two opening and closing doors (12), and a plurality of positioning grooves (55) are provided in a circumferential array on the positioning blocks (52). When the two opening and closing doors (12) are closed, the positioning teeth (51) are in a horizontal state and are inserted into the positioning grooves (55), and a certain extrusion force is formed between the positioning grooves (55); The positioning member (53) is provided on the two connecting rods (32) and is used to position the positioning teeth (51) and the positioning block (52).

5. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 4 is characterized in that: A plurality of tooth-shaped grooves (54) are formed in a circumferential array on the positioning teeth (51), and the positioning members (53) are arranged on the two connecting rods (32); when the two opening and closing doors (12) are closed, the two positioning members (53) are respectively plugged into the tooth-shaped grooves (54) and the positioning grooves (55), and a certain extrusion force is formed between them to position the positioning teeth (51) and the positioning blocks (52).

6. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 1 is characterized in that: A fixing ring (14) is provided at a middle position of the top of the throwing frame (11), and the crane (2) comprises a steel wire rope (21), a winding mechanism (23), and a hook (22). The steel wire rope (21) is provided on the winding mechanism (23) and is used to drive the steel wire rope (21) to move through the winding mechanism (23). The hook (22) is provided on the steel wire rope (21) and is hooked on the fixing ring (14) for positioning.

7. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 6 is characterized by: The winding mechanism (23) comprises: A mounting rod (24) is rotatably mounted on the vessel (1) via a mounting plate (241) with the top end tilted upward; A suspension rod (25) is tiltably and slidably arranged on the mounting rod (24) and is rotatably mounted with a guide wheel (251); A telescopic member (26) is provided on the mounting rod (24) and is used to drive the suspension rod (25) to move; A driving member for driving the mounting plate (241) to rotate; The reel (27) is rotatably mounted on the mounting plate (241) and is used to reel in or unwind the wire rope (21), wherein the wire rope (21) is guided around the guide wheel (251).

8. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 6 is characterized by: The sliding blocks (31) are provided in pairs and are located at both ends of the throwing frame (11). The moving assembly (4) includes: Two mounting rings (61) are respectively arranged on the upper surfaces of the two sliding blocks (31); Two pull ropes (62) are arranged on the reeling mechanism (23) through a connecting mechanism (7) and are provided with a pull hook (63) hooked on two mounting rings (61); the reeling mechanism (23) drives the steel wire rope (21) and the pull rope (62) to move simultaneously and cooperates to drive the throwing frame (11) to move. When it is necessary to throw the sandbag, the steel wire rope (21) stops and the two pull ropes (62) are extended at the same time, so that the opening and closing door (12) opens under the action of the sandbag's gravity and the sandbag is thrown.

9. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 8 is characterized by: The connecting mechanism (7) comprises: A take-up drum (71) is rotatably mounted on the take-up mechanism (23) and is used to take up or release two draw ropes (62); The control assembly (8) is used to control the take-up drum (71) and the winding mechanism (23) to be connected to each other and drive the wire rope (21) and the pull rope (62) to move simultaneously, or to control the take-up drum (71) to be separated from the winding mechanism (23) and to position the wire rope (21).

10. The automatic underwater sandbag throwing device for submarine pipeline protection according to claim 9, characterized in that: The control component (8) comprises: A fixed plate (81) is provided on the winding mechanism (23); A toothed disc (82) is slidably disposed on the winding mechanism (23) and has toothed portions (84) and key teeth (85) respectively disposed on opposite side walls; A control member is used to drive the toothed disk (82) to move and make the toothed portion (84) engage with the fixed plate (81) to position the wire rope (21), or to make the key teeth (85) engage with the take-up drum (71) and make the winding mechanism (23) and the take-up drum (71) start at the same time to realize the simultaneous movement of the wire rope (21) and the pull rope (62).

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