A riprap chute positioning and retracting system for immersed tube foundation construction

Abstract

The present invention discloses a riprap chute positioning and retracting system for construction of a submerged tube foundation, which uses a riprap chute device, which includes a workbench positioned on the side of a ship, wherein an assembly pipe is installed on the workbench in a sliding manner, and an electric wire take-up device is installed on the workbench on the left and right sides of the assembly pipe, and a reeling rope is connected between the electric wire take-up device and a weighted base at the bottom of the assembly pipe; it also includes: a wire control assembly, which is located on the workbench between the electric wire take-up device and the assembly pipe, and controls the vertical direction and compressive bearing of the wire harness of the reeling rope; the assembly pipe is arranged in sections, and a snap-fitting butt fastener is arranged at the butt connection between the pipe ends of the assembly pipes. The riprap chute positioning and retracting system for construction of a submerged tube foundation can utilize the buoyancy of the water body and the weight of the chute to achieve rapid assembly and protection, and at the same time, it is convenient to recycle and reuse the chute after the riprap operation.

Description

Technical Field

[0001] The invention relates to the technical field related to immersed tube foundation construction, and in particular to a riprap chute positioning and retracting system for immersed tube foundation construction operations. Background Art

[0002] In coastal engineering construction, in order to improve the convenience of foundation construction, before the foundation is implemented, the cofferdam island construction treatment will be carried out in the sea area. The island wall of the cofferdam island will be constructed with steel pipe pile foundation components. After the island wall construction is completed, the cofferdam area of ​​the island wall will be riprap and stone filling will be carried out, and the stones will be compacted to improve the foundation strength and stability of the cofferdam.

[0003] In actual riprap and stone filling operations, in order to improve the accuracy of riprap positioning and placement and reduce the movement and deviation of riprap caused by underwater currents, multiple foundation stone transfer ships are often used to carry out riprap operations during the riprap process. The riprap chute equipment loaded on the ship is used to extend the outlet end of the chute to the seabed where the cofferdam island is located. The use of the chute guide and the gravity of the stones used for riprap can be used to achieve accurate riprap positioning.

[0004] The existing riprap chute is generally positioned and installed on the side of the ship and used in combination with the stone feeding mechanism. The riprap chute is generally set to be disassembled or segmented to achieve the riprap operation at a great depth. While meeting the riprap operation, it will not affect the normal operation of the ship and avoid the collision and damage of the riprap chute due to the influence of water flow resistance and obstacles during the operation of the ship. The detachable riprap chute requires manual assistance to unfold and disassemble. During the positioning and retracting process, due to the self-gravity of the riprap chute and the damping force of the water body after sinking underwater, the riprap chute is greatly affected by its own and external loads during retraction and deployment, which is not conducive to the convenience of the riprap chute retraction and deployment operation. After the riprap operation at a great depth along the coast, it is difficult to disassemble and restore.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original riprap chute. Summary of the invention

[0006] The object of the present invention is to provide a riprap chute positioning and retracting system for immersed tube foundation construction operations, so as to solve the problem that the existing riprap chute proposed in the above-mentioned background technology is not conducive to the convenience of riprap chute retraction and deployment operations due to the riprap chute's own gravity and the damping force of the water body after sinking underwater, and is difficult to disassemble and restore after riprap operations at great depths along the coast.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a riprap chute positioning and retracting system for immersed tube foundation construction, using a riprap chute device, the riprap chute device comprising a workbench positioned on the side of a ship, wherein an assembly pipe is installed on the workbench in a sliding manner, and electric wire take-ups are also installed on the workbench on the left and right sides of the assembly pipe, and a reeling rope is connected between the electric wire take-up and the weighted base at the bottom of the assembly pipe;

[0008] It also includes: a wire control assembly, located on a workbench between the electric wire take-up device and the assembly tube, to control the vertical direction and compressive load of the wire harness of the take-up rope;

[0009] The assembly pipes are arranged in sections, and the butt joints between the pipe ends of the assembly pipes are provided with snap-fit ​​butt fasteners.

[0010] Preferably, the workbench comprises a positioning base and a guide funnel, wherein the positioning base is positioned with bolts on the ship's side, and a coaxial connection between the positioning base and the guide funnel is configured to be tubular.

[0011] Preferably, the assembly tube is provided with a sliding lifting connection with the tubular structure of the positioning base and the guide funnel, wherein marking rods are fixed on the left and right outer side walls of the assembly tube.

[0012] Preferably, the engaging fastener is configured as a bolt at the joint of the upper and lower assembly tubes, and the bolt is vertically coaxially distributed with the marking rod.

[0013] Preferably, the engaging fastener comprises a marking rod and a positioning hole provided therein, and a positioning rod is telescopically and movably installed in the marking rod on the outer wall of the lower assembly tube, and the positioning rod and the positioning hole directly above it penetrate for positioning;

[0014] At the same time, a guide ring is sleeved on the outer wall of the upper tube end of the lower assembly tube, an annular liquid bag is arranged between the guide ring and the assembly tube, and the annular liquid bag is connected with the interior of the positioning channel corresponding to the positioning rod.

[0015] Preferably, a sealing plug is provided at the lower end of the positioning rod, and the sealing plug at the lower end of the positioning rod is connected to the inner wall of the positioning channel by a sliding connection with a close seal, and damping rings are provided on the outer wall of the positioning rod and the inner wall of the positioning channel on the side wall of the upper assembly tube.

[0016] Preferably, the line control assembly includes a guide wheel and a slow-release wheel rotatably mounted on the side wall of the positioning base, and two guide wheels are symmetrically arranged about the vertical center axis of the slow-release wheel, and the guide wheels and the slow-release wheels are distributed in the shape of an isosceles triangle.

[0017] Preferably, the two ends of the rotationally connected central axis in the middle of the slow-release wheel are in penetrating sliding connection with the positioning base, and an elastic member is provided between the end of the central axis and the positioning base.

[0018] Preferably, an air bag is embedded and installed on the outer wall of the weighted base, and an air guide pipe is connected between the air bag and the gas pressurizing component on the outer wall of the positioning base.

[0019] Preferably, the air duct is provided by a threaded hose, and the air duct is wound up by a winch loaded in the gas pressurizing assembly.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the riprap chute positioning and retracting system for the immersed tube foundation construction operation can utilize the buoyancy of the water body and the weight of the chute to achieve rapid assembly and protection, and at the same time, facilitate the recovery and reuse of the chute after the riprap operation. The specific contents are as follows:

[0021] 1. Through the setting of the line control assembly, the slow-release wheel and the elastic parts at the assembly position, the electric wire take-up device saves effort in the process of reeling in and releasing the wire. At the same time, when the assembly pipe collides during assembly and riprap operations, it can interact with the buoyancy of the water body to achieve floating energy release in the vertical direction, thereby protecting the riprap chute in use and assembly.

[0022] Furthermore, the line control assembly can use the guide wheel and the slow-release wheel to realize the direction of the reel on the electric reel. During the operation of retracting and releasing the riprap tube using the reel, the reel and the riprap tube are arranged in parallel, which reduces the entanglement of the reel with underwater debris in the unfolded state, affecting the stability of retraction and release.

[0023] 2. The tubular structure at the connection between the positioning base and the guide funnel is used to provide a guide and limit interval for the automatic docking of the ends of the assembly pipe. Under the external pressure of the gravity load, the gravity load drives the annular liquid bag to compress, so that the oil inside it drives the positioning rod to expand and contract under the action of pressure. The automatic docking of the assembly pipe is achieved by the interlaced docking of the positioning rod and the positioning channel;

[0024] Furthermore, when the assembly tube and the annular liquid bag thereon are deeply immersed in the water, the annular liquid bag can be deformed and compressed as a whole due to the large overall pressure surface of the annular liquid bag, thereby stabilizing the insertion and docking fastening effect of the positioning rod and the positioning hole, and improving the stability of the connection between the two.

[0025] 3. Additional gas pressurization components and air bags are set up to increase the buoyancy of the assembly tube when it goes deep into the water. When the assembly tube is docked and thrown with stones, the external force of the collision can use the buoyancy to relieve the pressure of the assembly tube and reduce the damage during use. At the same time, the setting and application of the air bag can facilitate the recovery of the assembly tube by using the buoyancy and reduce the load on the electric line reel caused by the water flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the assembly pipe assembly installation structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the first type of butt-jointed installation structure of the assembly pipe of the present invention;

[0030] Figure 5 This is a schematic diagram of the second type of butt-jointed installation structure of the assembly pipe of the present invention;

[0031] Figure 6 For the present invention Figure 5 A schematic diagram of the butt joint structure of the positioning rods on the two standard rods distributed up and down;

[0032] Figure 7 This is a schematic diagram of the installation structure of the wire control assembly of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the wire control assembly of the present invention;

[0034] Fig. 9 This is a schematic diagram of the airway connection structure of the present invention;

[0035] Fig.10 It is a schematic diagram of the distribution structure of the marking rods and positioning holes on a single assembly tube of the present invention.

[0036] In the figure: 1. Assembly tube; 101. Positioning base; 102. Guide funnel; 2. Electric wire take-up device; 3. Weighted base; 4. Wire control assembly; 401. Guide wheel; 402. Slow-release wheel; 5. Gas pressurization assembly; 6. Air guide tube; 7. Air bag; 8. Marking rod; 9. Positioning rod; 10. Positioning channel; 11. Guide ring; 12. Annular liquid bag; 13. Damping ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figure 1-Figure 8The present invention provides a technical solution: a riprap chute positioning and retracting system for immersed tube foundation construction, using a riprap chute device, the riprap chute device includes a workbench positioned on the side of the ship, wherein an assembly pipe 1 is installed on the workbench in a through-type sliding manner, and an electric wire take-up device 2 is also installed on the workbench on the left and right sides of the assembly pipe 1, and a reeling rope is connected between the electric wire take-up device 2 and a weighted base 3 at the bottom of the assembly pipe 1;

[0039] This technical solution utilizes the electric wire take-up device 2 and the winding rope thereon to realize the lifting and lowering control of the assembly pipe 1. The lifting and lowering of the assembly pipe 1 inside the workbench enables the assembly pipe 1 to be stably positioned and retracted, thereby achieving precise stone throwing operations for subsequent use.

[0040] It also includes: a wire control assembly 4, which is located on a workbench between the electric wire take-up device 2 and the assembly tube 1, and controls the vertical direction and compressive load of the wire harness of the take-up rope; the assembly tube 1 is arranged in sections, and the butt joints between the tube ends of the assembly tubes 1 are provided with snap-fit ​​butt fasteners;

[0041] The workbench includes a positioning base 101 and a guide funnel 102, wherein the positioning base 101 and the ship's side are positioned by bolts, and the coaxial connection between the positioning base 101 and the guide funnel 102 is set to be tubular; the assembly tube 1 and the tubular structure of the positioning base 101 and the guide funnel 102 are set to be a sliding lifting connection, wherein the left and right outer walls of the assembly tube 1 are fixed with a marking rod 8; the snap-fitting fasteners are set to be bolts at the joints of the upper and lower assembly tubes 1, and the bolts are vertically coaxially distributed with the marking rod 8;

[0042] Use Figure 2-Figure 4 As shown, by using the positioning base 101 and the guide funnel 102, the docking assembly of the assembly tube 1 is facilitated, and at the same time, the marking rod 8 on the assembly tube 1 can align the assembly of the assembly tube 1, which is convenient for accurate alignment. At the same time, the marking rod 8 can also limit the assembly tube 1 when it is raised or lowered, preventing the assembly tube 1 from rotating during the lifting process and affecting the stability of the retracting and releasing operation.

[0043] In addition to the above technical solutions, Figure 5 and Figure 6As shown, the present invention further discloses another kind of snap-fit ​​butt fastener, which includes a marking rod 8 and a positioning channel 10 opened therein, and a positioning rod 9 is telescopically and movably installed in the marking rod 8 on the outer wall of the lower assembly tube 1, and the positioning rod 9 and the positioning channel 10 directly above it penetrate and position; at the same time, a guide ring 11 is sleeved on the outer wall of the upper tube end of the lower assembly tube 1, and an annular liquid capsule 12 is arranged between the guide ring 11 and the assembly tube 1, and the annular liquid capsule 12 is connected with the interior of the positioning channel 10 correspondingly installed by the positioning rod 9; a sealing plug is arranged at the lower end of the positioning rod 9, and the sealing plug at the lower end of the positioning rod 9 is connected to the inner wall of the positioning channel 10 through a sliding connection with a fit seal, and a damping ring 13 is arranged on the outer wall of the positioning rod 9 and the inner wall of the positioning channel 10 on the side wall of the upper assembly tube 1;

[0044] In this technical solution, by setting a tubular structure at the coaxial connection of the positioning base 101 and the guide funnel 102, the tube ends of the assembly tube 1 are docked at this position. After the lower assembly tube 1 moves to this position, it is only necessary to put the upper assembly tube 1 to this position. Under the gravity of the assembly tube 1, the upper and lower assembly tubes 1 are docked, and the upper assembly tube 1 presses the annular liquid capsule 12 on the lower assembly tube 1, so that the annular liquid capsule 12 is compressed, and the oil in the annular liquid capsule 12 is passed through the preset oil flow channel inside the assembly tube 1. Fig.10 The oil flow channels and Figure 6 The lower "liquid inlet" enters the positioning channel 10 installed correspondingly below the sealing plug of the positioning rod 9. Under the action of hydraulic pressure, the positioning rod 9 will rise and extend into the positioning channel 10 of the upper assembly tube 1. The assembly positioning of the assembly tube 1 is realized by utilizing the through positioning of the positioning rod 9 and the positioning channel 10, wherein the upper and lower sections of the positioning channel 10 on the outside of the assembly tube 1 are separated and the upper and lower sections are not connected. Furthermore, after the annular liquid bag 12 is deeply underwater, since the force-bearing area of ​​the annular liquid bag 12 is much larger than the pressure-bearing surface of the positioning rod 9, the water pressure and the gravity of the assembly tube 1 stabilize the outward extension state of the positioning rod 9, thereby achieving the damping engagement and positioning effect of the positioning rod 9 and the positioning channel 10 between the damping ring 13.

[0045] In this technical solution, the following Figure 7 and Figure 8 As shown, the wire control assembly 4 is further disclosed, and the wire control assembly 4 includes a guide wheel 401 and a slow-release wheel 402 rotatably mounted on the side wall of the positioning base 101, and two guide wheels 401 are symmetrically arranged about the vertical central axis of the slow-release wheel 402, and the guide wheels 401 and the slow-release wheels 402 are distributed in an isosceles triangle shape; the two ends of the rotation connection central axis in the middle of the slow-release wheel 402 are connected to the positioning base 101 through sliding connection, and an elastic member is arranged between the end of the central axis and the positioning base 101;

[0046] The combined setting of the guide wheel 401 and the slow-release wheel 402 first limits the guiding state of the winding rope between the weighted base 3 at the bottom of the assembly tube 1 to prevent the winding rope from being too unfolded. During the stone throwing process, the winding rope becomes entangled with underwater algae or debris, affecting the winding and releasing positioning effect of the winding rope on the assembly tube 1. At the same time, the guide wheel 401 and the slow-release wheel 402 can also reduce the strength of the load pressure of the electric wire take-up device 2. Moreover, the slow-release wheel 402 acts on the elastic member at its installation location. When the assembly tube 1 is subjected to stone throwing operation, the impact of the external force of the collision of the assembly tube 1 can be achieved through the position movement of the slow-release wheel 402, so as to realize the energy release of the short-distance movement of the winding rope. Under the joint action of buoyancy, the energy release protection of the assembly tube 1 is realized. Furthermore, the installation and application of the slow-release wheel 402 can also release the kinetic energy under the impact state when the assembly tube 1 is assembled and positioned, and the assembly tube 1 vertically impacts each other during assembly, so as to facilitate the self-docking and positioning of the assembly tube 1.

[0047] Embodiment 2: Based on Embodiment 1, the present invention adopts Fig. 9 The technical solution shown; an air bag 7 is embedded on the outer wall of the weighted base 3, and an air duct 6 is connected between the air bag 7 and the gas pressurizing component 5 on the outer wall of the positioning base 101; the air duct 6 is provided by a threaded hose, and the air duct 6 is wound by a winch loaded in the gas pressurizing component 5;

[0048] By providing the airbag 7, the use of the airbag 7 can provide expansion buoyancy by gas introduction when the assembly tube 1 is docked and the assembly tube 1 is used for recovery, so that when the assembly tube 1 is recovered by the electric wire take-up device 2, the buoyancy and the tension of the winding rope on the electric wire take-up device 2 work together to speed up the recovery efficiency of the assembly tube 1, reduce the difficulty in recovering the assembly tube 1 caused by water flow resistance, and reduce the use load of the electric wire take-up device 2.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A riprap chute positioning and retracting system for immersed tube foundation construction, using a riprap chute device, the riprap chute device comprising a workbench positioned at the side of a ship, wherein an assembly tube (1) is slidably installed on the workbench, and electric wire take-ups (2) are installed on the workbench on the left and right sides of the assembly tube (1), and a reeling rope is connected between the electric wire take-up (2) and a weighted base (3) at the bottom of the assembly tube (1); It is characterized in that Also includes: A wire control assembly (4) is located on a workbench between the electric wire take-up device (2) and the assembly tube (1), and controls the vertical direction and compressive load of the wire harness of the take-up rope; the wire control assembly (4) comprises a guide wheel (401) and a slow-release wheel (402) rotatably mounted on the side wall of the positioning base (101), and two guide wheels (401) are symmetrically arranged about the vertical center axis of the slow-release wheel (402), and the guide wheels (401) and the slow-release wheels (402) are distributed in the shape of an isosceles triangle; The two ends of the rotationally connected central axis in the middle of the slow-release wheel (402) are connected to the positioning base (101) in a penetrating sliding manner, and an elastic member is provided between the end of the central axis and the positioning base (101); The assembly pipe (1) is arranged in sections, and the butt joints between the pipe ends of the assembly pipes (1) are provided with snap-fitting butt fasteners; The snap-fitting butt fastener comprises a marking rod (8) and a positioning hole (10) provided therein, and a positioning rod (9) is telescopically and movably installed in the marking rod (8) on the outer wall of the lower assembly tube (1), and the positioning rod (9) and the positioning hole (10) directly above it penetrate for positioning; At the same time, a guide ring (11) is sleeved on the outer wall of the upper tube end of the lower assembly tube (1), an annular liquid capsule (12) is arranged between the guide ring (11) and the assembly tube (1), and the annular liquid capsule (12) is connected to the interior of the positioning channel (10) correspondingly installed on the positioning rod (9); The lower end of the positioning rod (9) is provided with a sealing plug, the sealing plug at the lower end of the positioning rod (9) is connected to the inner wall of the positioning hole (10) by a sliding connection with a close fit and seal, and the outer wall of the positioning rod (9) and the inner wall of the positioning hole (10) on the side wall of the upper assembly tube (1) are both provided with a damping ring (13); Under the action of gravity of the assembly tube (1), the upper and lower assembly tubes (1) are butted, and the upper assembly tube (1) presses the annular liquid capsule (12) on the lower assembly tube (1), so that the annular liquid capsule (12) is compressed. By utilizing the preset oil flow channel inside the assembly tube (1), the oil in the annular liquid capsule (12) passes through the oil flow channel and the lower liquid inlet and enters the positioning channel (10) correspondingly installed below the sealing plug of the positioning rod (9). Under the action of hydraulic pressure, the positioning rod (9) rises and extends into the positioning channel (10) of the upper assembly tube (1). By utilizing the through positioning of the positioning rod (9) and the positioning channel (10), the assembly positioning of the assembly tube (1) is achieved, wherein the upper and lower sections of the positioning channel (10) outside the assembly tube (1) are separated and are not connected to each other.

2. The riprap chute positioning and retracting system for immersed tube foundation construction according to claim 1 is characterized in that: The workbench comprises a positioning base (101) and a guide funnel (102), wherein the positioning base (101) and the ship's side are positioned by bolts, and a coaxial connection between the positioning base (101) and the guide funnel (102) is configured to be tubular.

3. The riprap chute positioning and retracting system for immersed tube foundation construction according to claim 2 is characterized in that: The assembly tube (1) is provided with a sliding lifting connection with the tubular structure of the positioning base (101) and the guide funnel (102), wherein the left and right outer side walls of the assembly tube (1) are fixed with marking rods (8).

4. The riprap chute positioning and retracting system for immersed tube foundation construction according to claim 1, characterized in that: An air bag (7) is embedded and installed on the outer wall of the weighted base (3), and an air guide tube (6) is connected between the air bag (7) and the gas pressurizing component (5) on the outer wall of the positioning base (101).

5. The riprap chute positioning and retracting system for immersed tube foundation construction according to claim 4 is characterized in that: The air guide pipe (6) is provided by a threaded hose, and the air guide pipe (6) is wound up by a winch loaded in the gas pressurizing component (5).

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