Floating underwater crushed stone bed continuous leveling vessel

Abstract

The present invention provides a floating underwater gravel bed continuous leveling ship, including a hull, wherein liftable positioning piles are arranged at the bow and stern of the hull, and the positioning piles are slidably connected to the hull; a transport trolley is also arranged, and the transport trolley is driven by a driving device to slide along the length direction of the hull, and a slide pipe is arranged on the transport trolley, and a feeding port is arranged at the top of the slide pipe, and the bottom of the slide pipe is close to the bottom of the water; at least one conveyor belt for feeding the transport trolley is also arranged. By adopting a solution in which the positioning piles are slidably connected to the hull in the horizontal direction, when the riprap construction is completed in one area, the reciprocating moving positioning piles and the hull can realize continuous movement with precise guidance, thereby avoiding the need to reposition the hull each time the hull is moved, and realizing high-precision continuous "Z"-shaped riprap paving construction through the slide pipe.

Description

Technical Field

[0001] The invention relates to the field of underwater engineering construction, in particular to a floating underwater gravel bed continuous leveling ship. Background Art

[0002] The immersed tube method is a construction method for underwater tunnels. An immersed tube tunnel is an underwater tunnel built by floating several prefabricated sections to the sea surface (river surface) and sinking them one by one in a dredged foundation trench. In order to avoid local high points in the foundation, the bottom plate of the immersed tube is evenly stressed, and a high-precision leveled gravel cushion is designed between the bottom plate and the foundation as the base bed. A special gravel cushion laying ship with high leveling accuracy is required for construction.

[0003] A representative ship is the dynamic positioning vertical drop tube riprap ship "FLINTSTONE" under the DEME Group, which is the largest riprap ship in the world. The ship adopts DP / DT dynamic positioning and does not require the assistance of tugboats. It can operate within 500 meters of the adjacent platform structure and the operating water depth can reach 2000m. Its riprap tube system has a measurement system of active heave compensation ROV, including multi-beam, echo sounder and online processing system, which is considered to be the most advanced in the industry. However, the positioning accuracy of the floating dynamic riprap ship is difficult to reach the cm level, and it is difficult to accurately form a Z-shaped cushion layer in the direction of the ship's travel and the lateral movement of the riprap tube. It is usually only suitable for projects with low surface accuracy requirements such as the protection of oil platforms, large offshore wind power foundations and riprap protection of submarine cables, and is not suitable for the laying of immersed tube foundations.

[0004] A more advanced supporting platform-type riprap and leveling vessel "KUS-ISLAND" was used in the construction of the Busan-Geoje Tunnel in South Korea. [This leveling vessel integrates the functions of gravel throwing, leveling and detection. It essentially integrates the supporting platform structure and the riprap pipe system with compensation devices, and a supporting construction management system is developed. Since the platform of the platform-type laying vessel is lifted off the water surface, the hull is basically not affected by waves, currents, and currents during operation; when the sea conditions are good, it can also be leveled in a floating state, and has a strong ability to adapt to the working environment. The riprap pipe management system can accurately detect and control the elevation and position of the material distribution pipe outlet, and has high leveling accuracy. "KUS-ISLAND" measured the comprehensive laying accuracy of the Busan Tunnel, and the accumulated elevation and flatness reached ±40mm. The disadvantage of this method is that the cost is extremely expensive, and the pile legs need to be inserted into the tunnel bed groove range, which has a certain destructive effect on the foundation.

[0005] Chinese patent document CN107489154A records a deep-sea bed leveling construction method, which realizes riprap by moving the hull. The problem is that the hull is affected by the waves during the movement, and the construction accuracy is not high. Chinese patent document CN 208328938 U records a riprap leveling device, which realizes the X and Y movement of the riprap tube by setting a frame-type platform to realize the "Z"-shaped riprap. However, after completing a construction area, the hull needs to be moved as a whole and repositioned. During the repositioning process, it is necessary to rely on the positioning accuracy of GPS, which has the problems of slow positioning speed and poor positioning accuracy. Furthermore, it also records a solution of repeatedly extending and retracting the balance tube by a hydraulic cylinder to adjust the stroke, but due to the influence of water flow and wind and waves, it is difficult to keep the riprap tube vertical. Although the inclinometer is recorded in the specification, it does not record how to correct the inclination of the riprap tube according to the inclination to ensure the flatness of the bed. Furthermore, since the hydraulic cylinders are located underwater and each hydraulic cylinder has an oil inlet and return pipe, it is very difficult to accurately control multiple hydraulic cylinders, and the large number of hydraulic oil pipes makes it very troublesome to control the lifting and lowering of the riprap pipe. Furthermore, the above document also records the use of a leveling head to level the bed, but as the length of the riprap pipe increases, the bending deformation of the riprap pipe increases, and the leveling accuracy of this solution is difficult to control. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a floating underwater gravel base bed continuous leveling vessel, which can realize continuous stone throwing construction along the slide rail with high precision, without the need for repeated positioning, reducing repeated positioning errors and improving construction accuracy. In the preferred scheme, the elevation and inclination of the discharge port at the bottom of the slide pipe can be adjusted respectively to improve the control accuracy, reduce the difficulty of controlling the hydraulic cylinder located underwater, and especially reduce complex control pipelines. It can achieve leveling of the gravel base bed without relying on the rigidity of the slide pipe itself.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a floating underwater gravel bed continuous leveling ship, comprising a hull, wherein liftable positioning piles are arranged at the bow and stern of the hull, and the positioning piles are slidably connected to the hull;

[0008] A transport trolley is also provided, which is driven by a driving device to slide along the length direction of the hull, and a slide pipe is provided on the transport trolley, a feeding port is provided at the top of the slide pipe, and the bottom of the slide pipe is close to the bottom of the water;

[0009] At least one conveyor belt is also provided for feeding the transport trolley.

[0010] In a preferred solution, the positioning piles are arranged on the pontoon slide rails, at least two positioning pile locking devices are arranged near the two ends of the pontoon slide rails, and the positioning piles are arranged in the positioning pile locking devices in a liftable manner;

[0011] The two pontoon slide rails are respectively slidably connected with the bow and stern of the hull;

[0012] At least two positioning pile locking devices and positioning piles are also provided on the hull;

[0013] The pontoon slide rail is provided with a draft and water level regulating structure.

[0014] In a preferred solution, a slide rail is provided on one side of the buoy slide rail, and a plurality of first limit guide wheels and second limit guide wheels in contact with the slide rail are provided on the hull;

[0015] A rack is also arranged near the slide rail, and a driving gear driven to rotate by a driving device is arranged on the hull, and the driving gear is meshed and connected with the rack.

[0016] In a preferred solution, a slide rail space for accommodating the slide rail is provided on the hull to form a mutually engaging structure with the slide rail, and the first limiting guide wheel and the second limiting guide wheel are arranged on the inner side of the slide rail space;

[0017] The pontoon rails are connected or disconnected from the hull by adjusting the draft and water level.

[0018] In a preferred solution, the slide pipe is a first slide pipe and a second slide pipe which are sleeved together;

[0019] The first slide pipe is connected to the second slide pipe in a liftable manner, and a discharge port adjustment device is provided at the bottom of the second slide pipe;

[0020] A plurality of hoisting devices are arranged on the transport trolley, and the ends of the steel wire ropes of the hoisting devices are connected with the second slide pipe.

[0021] In a preferred solution, in the discharge port adjustment device, the discharge port sleeve is movably connected with the second slide pipe, a plurality of upper fixing frames extending outward are provided on the outer wall of the second slide pipe, a plurality of lower fixing frames extending outward are correspondingly provided on the outer wall of the discharge port sleeve, and an inclination adjustment cylinder is provided between the upper fixing frames and the lower fixing frames;

[0022] A first inclination sensor is also provided on the discharge port sleeve;

[0023] A distance sensor is provided at the bottom of the lower fixing frame to detect the distance from the discharge port sleeve to the bottom of the base bed;

[0024] A vibration device is also provided on the discharge port sleeve.

[0025] In the preferred solution, the oil ports at both ends of the tilt angle adjustment cylinder are connected to the tilt angle reversing valve, the tilt angle reversing valve is connected to the oil inlet pipe and the oil return pipe respectively, and the oil inlet pipe is provided with a second flow valve and a second check valve;

[0026] A plurality of oil inlet pipes are connected to a multi-position distribution solenoid valve, and the multi-position distribution solenoid valve is connected to an oil supply pipe;

[0027] The oil supply pipe is also connected to the pressure buffer tank.

[0028] In a preferred solution, a telescopic fixing device is fixedly provided on the second slide pipe, a fixing bracket of the telescopic fixing device is fixedly connected to the second slide pipe, one or more fixing cylinders are fixedly provided on the fixing bracket, a clip is provided at the front end of the piston rod of the fixing cylinder, the clip passes through the second slide pipe and contacts the outer wall of the first slide pipe, and is used to fix the second slide pipe;

[0029] A return spring is arranged in the fixed cylinder, the oil port of the fixed cylinder is connected to the oil inlet pipe and the first oil return pipe through a pipeline, the oil inlet pipe and the oil return pipe are connected to the reversing solenoid valve, and the reversing solenoid valve is connected to the oil supply pipe and the second oil return pipe;

[0030] A first flow valve and a first check valve are provided on the oil inlet pipe;

[0031] A pressure sensor is provided on the pipeline;

[0032] The reversing solenoid valve has two positions, each position has a connecting passage and a cut-off position, and the connecting passage and the cut-off position in the two positions are opposite.

[0033] In a preferred solution, a stone detection device is also provided on the first slide pipe to detect the loading height of the stone;

[0034] A GPS positioning device is also provided on the first slide pipe;

[0035] A total station prism is also provided on the outer wall of the first slide pipe.

[0036] In a preferred solution, a track is provided along the length or width direction of the hull, the transport trolley is slidably mounted on the track, and winches are provided at both ends of the track for driving the transport trolley to slide along the track;

[0037] A first conveyor belt is arranged parallel to the track, and a second conveyor belt is arranged on the transport trolley. The inlet end of the second conveyor belt is located below the first conveyor belt, and the outlet end of the second conveyor belt is located above the feeding port.

[0038] In a preferred solution, a pontoon propulsion device is provided at at least one end and at least one side of the pontoon slide rail.

[0039] The present invention provides a floating underwater gravel bed continuous leveling ship. By adopting a solution in which positioning piles are slidably connected to the hull in the horizontal direction, when the riprap construction is completed in one area, the positioning piles and the hull can be reciprocated to achieve continuous movement with precise guidance, thereby avoiding the need to reposition the hull each time the hull is moved, and high-precision continuous "Z"-shaped riprap paving construction can be achieved through the slide pipe. In the preferred solution, by adopting a structure with two detachable pontoon slide rails, the construction range after each change of the hull position can be greatly increased, and the construction efficiency can be improved. The unique slide rail structure can be used to conveniently combine and disengage the pontoon slide rail with the hull, so that the pontoon slide rail can be conveniently fixed to one side of the hull for easy migration. The pontoon propulsion device set on the pontoon slide rail can conveniently deploy the equipment at the construction site. By adopting a structure with an upper fixing frame, a lower fixing frame and an inclination adjustment cylinder, in addition to being able to adjust the elevation of the discharge port of the chute, the inclination of the discharge port of the chute can also be adjusted so that the distance between the discharge port and the mud is within the set value. At the same time, when the chute is tilted, the angle of the discharge port can be adjusted to ensure that the discharge port is flush with the mud surface and the distance between the discharge port and the mud surface is kept at a fixed value, thereby ensuring the accuracy of stone paving. By adopting a structure in which the first chute and the second chute are sleeved, in conjunction with a winch device and a telescopic fixing device, the length of the entire chute can be easily adjusted to accurately control the thickness of the gravel bed. A stone detection device is provided in the chute to ensure a certain amount of stone, thereby ensuring that the pressure of the stone at the discharge port on the ground is consistent, and the accuracy of stone paving can be ensured. The chute can be controlled to be telescopic by the winch device and can be adjusted at any time according to the change of water depth. By means of a vibration device provided on the sleeve of the discharge port, the gravel bed can be leveled by vibration without relying on the rigidity of the chute itself. The device of the present invention can perform continuous high-precision riprap construction without repeated repositioning, thereby improving the laying speed of the gravel base bed and also improving the laying accuracy of the gravel base bed. The flatness error of the laid gravel base bed can be controlled within 40 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0041] Figure 1 It is a schematic top view of the overall structure of the present invention.

[0042] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0043] Figure 3 It is a schematic side view of the overall structure of the present invention.

[0044] Figure 4 It is a schematic top view of the overall structure of the preferred embodiment of the present invention.

[0045] Figure 5It is a structural schematic diagram of the connection position between the hull and the pontoon slide rail in the present invention.

[0046] Figure 6 It is a top view schematic diagram of the preferred solution of the pontoon slide rail in the present invention.

[0047] Figure 7 The present invention is a schematic diagram of the process of realizing continuous riprap construction.

[0048] Figure 8 It is a structural schematic diagram of the slide pipe and the discharge port regulating device in the present invention.

[0049] Fig. 9 It is a top view of the discharge port adjusting device in the present invention.

[0050] Fig.10 It is a top view of the telescopic fixing device in the present invention.

[0051] Fig.11 It is a schematic diagram of the hydraulic drive structure of the fixed cylinder in the present invention.

[0052] Fig.12 It is a schematic diagram of the hydraulic drive structure of the tilt angle adjustment cylinder in the present invention.

[0053] Fig.13 It is a schematic diagram of the hydraulic drive structure of the pontoon propulsion device in the present invention.

[0054] In the figure: a first slide pipe 1, a stone detection device 101, a total station prism 102, a GPS positioning device 103, a second slide pipe 2, a hull 3, a track 31, a first limit guide wheel 32, a second limit guide wheel 33, a driving gear 34, a sliding motor 35, a discharge port adjustment device 4, an upper fixed frame 41, an inclination adjustment cylinder 42, an inclination reversing valve 421, a second flow valve 422, a second non-return valve 423, a multi-position distribution valve 424, a pressure buffer tank 425, a lower fixed frame 43, a distance sensor 44, a first inclination sensor 45, a discharge port sleeve 46, a vibration device 47, a positioning pile 5, Positioning pile locking device 51, telescopic fixing device 6, fixing bracket 61, fixing cylinder 62, pressure sensor 621, first flow valve 622, first non-return valve 623, reversing solenoid valve 624, gravel bed 7, feeding port 8, second conveyor belt 9, winch 10, slide pipe adjusting rope 11, first conveyor belt 12, transport trolley 13, winch device 14, pontoon slide rail 15, slide rail 151, rack 152, pontoon propulsion device 16, propulsion reversing valve 161, propulsion flow valve 162, propulsion overflow valve 163, hydraulic pump 164, filter 165, oil tank 166, propulsion valve 167. DETAILED DESCRIPTION

[0055] Embodiment 1:

[0056] like Figures 1 to 3 In the present invention, a floating underwater gravel bed continuous leveling ship is provided, including a hull 3, at the bow and stern of the hull 3 are provided with liftable positioning piles 5, the positioning piles 5 are connected to the hull 3 in a sliding manner in the horizontal direction; the positioning piles improve the stability of the hull during the construction process, can resist the horizontal force brought by the water flow force and the chute scraper, and at the same time provide partial supporting force to keep the draft of the hull constant and not be affected by the load, that is, the changes brought by the movement of the transport trolley 13 and the chute.

[0057] A transport trolley 13 is also provided, which is driven by a driving device to slide along the length direction of the hull 3. A slide pipe is provided on the transport trolley 13, a feeding port 8 is provided at the top of the slide pipe, and the bottom of the slide pipe is close to the bottom of the water.

[0058] At least one conveyor belt is also provided for feeding the transport trolley 13. According to this scheme, the winch 10 drives the transport trolley 13 to reciprocate to complete the riprap construction of one row of gravel bed 7. Then the hull 3 is moved forward for a distance to start the riprap construction of the second row of gravel bed 7. When the hull 3 moves to the extreme position, the hull 3 is fixed, the positioning pile 5 is raised, the positioning pile 5 is moved to the initial position, and then the positioning pile 5 is driven into the mud to continue the riprap construction of the gravel bed 7, thereby realizing the high-precision continuous riprap construction of the gravel bed 7.

[0059] Embodiment 2:

[0060] The preferred solution is Figures 4 to 7 In the figure, the positioning pile 5 is arranged on the pontoon slide rail 15, and at least two positioning pile locking devices 51 are arranged near the two ends of the pontoon slide rail 15. The positioning pile 5 can be lifted and lowered in the positioning pile locking device 51; a locking cylinder is arranged in the positioning pile locking device 51, and the locking cylinder is connected to the clamping block. The cross section of the positioning pile locking device 51 is an annular structure, and an opening is arranged on the annular structure. A hinged clamping block is arranged at the position of the opening. One end of the locking cylinder is hinged to the clamping block, and the other end is connected to the annular structure. The first slide pipe 1 is loosened or clamped by the extension and contraction of the piston rod of the locking cylinder. The construction method of lifting and driving the positioning pile 5 into the bottom of the water belongs to the commonly used technology in petroleum and foundation construction, which will not be repeated here.

[0061] The two buoyancy box slide rails 15 are respectively slidably connected to the bow and stern of the hull 3;

[0062] At least two positioning pile locking devices 51 and positioning piles 5 are also provided on the hull 3;

[0063] The buoy slide rail 15 is provided with a draft water level regulating structure. The draft water level regulating structure includes a weight ballast tank or a water ballast tank. The water level of the entire buoy slide rail 15 is regulated by adding or removing weights or adjusting the water level in the tank. Figure 7The construction method shown in the figure is that the pontoon slide rail 15 and the hull 3 move along the construction surface alternately, so that the hull does not need to be repeatedly positioned each time it is moved, which greatly improves the construction efficiency and accuracy. In an optional solution, a winch fixed to the hull 3 or the pontoon slide rail 15 is used to achieve the alternating sliding between the pontoon slide rail 15 and the hull 3.

[0064] The preferred solution is Figure 5 In the embodiment, a slide rail 151 is provided on one side of the buoy slide rail 15, and a plurality of first limiting guide wheels 32 and second limiting guide wheels 33 in contact with the slide rail 151 are provided on the hull 3;

[0065] A rack 152 is also provided near the slide rail 151, and a driving gear 34 driven to rotate by a driving device is provided on the hull 3, and the driving gear 34 is meshed and connected with the rack 152. In this example, a sliding motor 35 is used to drive the driving gear 34 to rotate, and the hydraulic control structure and Fig.13 The structure is the same as in.

[0066] In a preferred solution, a slide rail space for accommodating the slide rail 151 is provided on the hull 3 to form a mutually interlocking structure with the slide rail 151, and the first limiting guide wheel 32 and the second limiting guide wheel 33 are arranged on the inner side of the slide rail space; Figure 5 In the embodiment, one side of the slide rail 151 is an inclined surface, and the corresponding first limiting guide wheel 32 is also arranged inclined. With this scheme, precise positioning between the rail 151 and the hull 3 can be achieved, ensuring the meshing accuracy between the driving gear 34 and the rack 152.

[0067] The pontoon slide rail 15 is connected or disconnected with the hull 3 by adjusting the draft water level. First, the draft water level of the pontoon slide rail 15 is lowered so that the top of the slide rail 151 is lower than the edge of the slide rail space, and then the pontoon slide rail 15 is brought closer to the hull 3, and the draft water level of the pontoon slide rail 15 is raised, that is, the ballast weight in the ballast tank is taken out, so that the pontoon slide rail 15 floats, and the first limiting guide wheel 32 and the second limiting guide wheel 33 are in reliable contact with the slide rail 151.

[0068] The preferred solution is Figure 2 , 8 In the embodiment, the slide pipe is a first slide pipe 1 and a second slide pipe 2 which are connected to each other;

[0069] The first slide pipe 1 is connected to the second slide pipe 2 in a liftable manner, and a discharge port adjustment device 4 is provided at the bottom of the second slide pipe 2;

[0070] A plurality of hoisting devices 14 are provided on the transport trolley 13, and the wire rope ends of the hoisting devices 14 are connected to the second slide pipe 2. The height of the second slide pipe 2 is controlled by the hoisting devices, thereby controlling the thickness of the crushed stone bed 7.

[0071] In the preferred embodiment, in the discharge port adjustment device 4, the discharge port sleeve 46 is movably connected to the second slide pipe 2, a plurality of upper fixing frames 41 extending outward are provided on the outer wall of the second slide pipe 2, a plurality of lower fixing frames 43 extending outward are correspondingly provided on the outer wall of the discharge port sleeve 46, and a retractable inclination adjustment cylinder 42 is provided between the upper fixing frames 41 and the lower fixing frames 43;

[0072] The discharge port sleeve 46 is also provided with a first inclination sensor 45; according to the feedback of the first inclination sensor 45, the inclination angle of the bottom of the discharge port sleeve 46 is adjusted so that the bottom of the discharge port sleeve 46 is parallel to the bottom of the bed. The first inclination sensor 45 in this example adopts an inclination sensor with X and Y axes to realize the inclination adjustment based on the X and Y axis planes.

[0073] A distance sensor 44 is provided at the bottom of the lower fixed frame 43 to detect the distance from the discharge port sleeve 46 to the bottom of the base bed; in the preferred embodiment, there are four lower fixed frames 43, and the number of upper fixed frames 41, distance sensors 44 and inclination adjustment cylinders 42 is correspondingly four. According to this embodiment, during the paving process, the paving height and inclination of the gravel base bed 7 can be accurately controlled by calculating the four distance sensors 44 and assisting with the inclination sensor. In the present invention, four distance sensors 44 are provided. Usually, during the paving process, at least one distance sensor 44 will detect the distance to the mud ground, and at least one will detect the distance to the gravel base bed 7. In this state, the difference between the two data can be calculated to obtain the paving height data of the gravel base bed 7, so as to make fine adjustments by controlling the extension and contraction of the inclination adjustment cylinder 42. The chute usually adopts a "Z"-shaped walking mode, reciprocating paving. After paving at least one row of gravel bed 7, at this time, the two distance sensors 44 will detect the distance to the mud, and the obtained data will be subtracted to obtain data on whether the discharge port is tilted, and then further verified by the first inclination sensor 45, and fine-tuned by controlling the extension and contraction of the inclination adjustment cylinder 42. The other two distance sensors 44 will detect the distance between the gravel bed 7, and the obtained data will be subtracted to determine whether the leveling operation needs to be started. If so, the vibration device 47 will be started to level the surface of the gravel bed 7 until it meets the design requirements.

[0074] The preferred solution is Figure 8In the embodiment, a vibration device 47 is provided on the outer wall of the discharge port sleeve 46. The structure of the vibration device 47 is as follows: a hydraulic motor is provided on the outer wall of the discharge port sleeve 46, and the hydraulic motor is connected to the eccentric block, so as to better level the gravel bed 7 by vibration. Further preferably, the vibration device 47 is arranged at a 90-degree interval along the circumference of the outer wall of the discharge port sleeve 46, so as to achieve circular, elliptical or linear vibration by control, and further improve the leveling efficiency. The vibration device 47 is provided so that the leveling of the gravel bed 7 does not need to rely on the rigidity of the chute itself, especially when the chute adopts a retractable structure and there is a large gap between the first chute 1 and the second chute 2, the solution of using the vibration device 47 has greater advantages.

[0075] In the preferred solution, the oil ports at both ends of the tilt adjustment cylinder 42 are connected to the tilt reversing valve 421, and the tilt reversing valve 421 is connected to the oil inlet pipe and the oil return pipe respectively. The oil inlet pipe is provided with a second flow valve 422 and a second check valve 423;

[0076] Multiple oil inlet pipes are connected to the multi-position distribution solenoid valve 424, and the multi-position distribution solenoid valve 424 is connected to the oil supply pipe; in this example, a multi-position distribution solenoid valve 424 is used to control four tilt adjustment cylinders 42. To adapt to deep water conditions and reduce pipelines. The specific operation steps are to switch the multi-position distribution solenoid valve 424 to supply oil to one of the four tilt adjustment cylinders 42, and control the telescopic action of the piston rod of the tilt adjustment cylinder 42 by switching the tilt reversing valve 421. By adjusting the four tilt adjustment cylinders 42 in turn, the bottom of the discharge port sleeve 46 is made parallel to the bottom of the base bed. Then, according to the feedback of the distance sensor 44, the bottom of the discharge port sleeve 46 is adjusted to an appropriate height in coordination with the action of the winch device 14 to control the thickness of the gravel base bed 7.

[0077] Preferably, the oil supply pipe is also connected to the pressure buffer tank 425. With this solution, the output oil pressure is balanced.

[0078] The preferred solution is Figure 2 , 10 In 11, a telescopic fixing device 6 is fixedly provided on the second slide pipe 2, a fixing bracket 61 of the telescopic fixing device 6 is fixedly connected to the second slide pipe 2, one or more fixing cylinders 62 are fixedly provided on the fixing bracket 61, and a clip is provided at the front end of the piston rod of the fixing cylinder 62, which passes through the second slide pipe 2 and contacts the outer wall of the first slide pipe 1, so as to fix the second slide pipe 2;

[0079] A return spring is provided in the fixed cylinder 62, and the oil port of the fixed cylinder 62 is connected to the oil inlet pipe and the first oil return pipe through a pipeline, and the oil inlet pipe and the oil return pipe are connected to the reversing solenoid valve 624, and the reversing solenoid valve 624 is connected to the oil supply pipe and the second oil return pipe;

[0080] A first flow valve 622 and a first check valve 623 are provided on the oil inlet pipe;

[0081] A pressure sensor 621 is provided on the pipeline;

[0082] The reversing solenoid valve 624 has two positions, each position has a connecting passage and a cut-off position, and the connecting passage and the cut-off position of the two positions are opposite. With this structure, the winch device 14 is prevented from continuously holding force, especially in deep water conditions, and the elastic expansion and contraction of the wire rope is prevented from affecting the height position of the second slide pipe 2.

[0083] In the preferred solution, a stone detection device 101 is further provided on the first chute 1 for detecting the loading height of the stone to ensure a certain amount of stone, thereby ensuring a consistent pressure of the stone on the ground at the discharge port to ensure the accuracy of stone paving.

[0084] A GPS positioning device 103 is also provided on the first slide pipe 1; this solution is used to determine the spatial position of the first slide pipe 1 on the horizontal plane.

[0085] A total station prism 102 is also provided on the outer wall of the first slide pipe 1. This solution is used to determine the spatial position of the first slide pipe 1 with higher accuracy.

[0086] In a preferred embodiment, a track 31 is provided along the length or width direction of the hull 3, and the transport trolley 13 is slidably mounted on the track 31. A winch 10 is provided at both ends of the track 31 to drive the transport trolley 13 to slide along the track 31.

[0087] A first conveyor belt 12 is provided parallel to the track 31, and a second conveyor belt 9 is provided on the transport trolley 13. The inlet end of the second conveyor belt 9 is located below the first conveyor belt 12, and the outlet end of the second conveyor belt 9 is located above the feeding port 8. A discharge hopper is provided on the first conveyor belt 12, which moves with the second conveyor belt 9 and supplies the second conveyor belt 9 with materials.

[0088] The preferred solution is Figure 6 As shown in FIG. 1 , a pontoon propulsion device 16 is provided at at least one end and at least one side of the pontoon slide rail 15. The pontoon propulsion device 16 is driven by a hydraulic motor, and the hydraulic control is as follows: Fig.13 As shown in . The oil port of the hydraulic motor is connected to the propulsion reversing valve 161 to realize forward and reverse control. The propulsion flow valve 162, the propulsion valve 167, the propulsion overflow valve 163, the hydraulic pump 164, and the filter 165 are sequentially arranged on the oil inlet pipe. The oil inlet pipe and the oil return pipe are both connected to the oil tank 166. The buoy propulsion device 16 is provided to promote the self-motion of the buoy slide rail 15, so that the buoy slide rail 15 is conveniently fixed to the side of the hull 3. During the construction process, the buoy slide rail 15 is installed at the bow and stern of the hull 3.

[0089] like Figure 7 In the process, the hull is moved to the designed position by a winch, the pontoon rail 15 is installed on the bow and stern of the hull 3, and the buoyancy of the pontoon rail 15 is adjusted so that the meshing of the driving gear 34 and the rack 152 is reliable and not easy to disengage. The positioning pile 5 of the pontoon rail 15 is lowered and inserted into the soil, and the positioning pile locking device 51 locks the positioning pile 5. The positioning pile improves the stability of the hull during the construction process, can resist the horizontal force brought by the water flow force and the chute scraper, and at the same time provides partial support force to keep the draft of the hull constant and not subject to the load, that is, the changes brought by the movement of the transport trolley 13 and the chute.

[0090] Use GPS and Beidou system to locate the position of the slide pipe in the horizontal plane, let the slide pipe accurately reach the starting stone throwing position, drive the lifting of the second slide pipe 2 by the winch device 14 to control the elevation position of the discharge port, and adjust the horizontality of the discharge port at the bottom of the slide pipe by controlling the expansion and contraction of the inclination adjustment cylinder 42 to ensure that the elevation of the discharge port is accurate and the discharge port is horizontal. After the position is determined, start the telescopic fixing device 6 to fix the second slide pipe 2. Start the first conveyor belt 12 and the second conveyor belt 9, pour a certain amount of stone into the slide pipe, and when the stone reaches the set height, start the winch 10 to drive the transport trolley 13, drive the slide pipe to slide along the length direction of the hull 3, so that the stone slowly flows out from the bottom of the slide pipe to form a gravel ridge belt, that is, a gravel bed 7. At the same time, the stone detection device 101 is used to detect the stone during the construction process. If it is found that there is too little stone in the slide pipe, the stone is automatically replenished in time. After the current gravel belt is laid, the sliding motor 35 drives the driving gear 34 to rotate, or uses the winch to drag the hull 3 to move forward one station, and the winch 10 at the other end drives the transport trolley 13 to drive the slide pipe to slide in the opposite direction along the length direction of the hull 3 to form a new gravel bed 7, and so on and so forth until the hull 3 reaches the limit position of the pontoon slide rail 15. A travel switch is provided near the limit position, and at this time the sliding motor 35 is locked and cannot work. Figure 7 In the process, the positioning piles 5 on the hull 3 are first driven into the bottom mud, and then the positioning piles 5 of the pontoon slide rail 15 on one side are pulled out, and the sliding motor 35 is activated to drive the pontoon slide rail 15 downward through the driving gear 34 or the winch until it reaches the limit position, and the positioning piles 5 of the pontoon slide rail 15 are driven down, and the pontoon slide rail 15 on the other side is also moved to the limit position, and the positioning piles 5 are driven down; the positioning piles 5 on the hull 3 are pulled out, and the paving construction of the gravel base bed 7 is continued. Until it moves along the construction belt by itself, the paving construction of the entire gravel base bed 7 is completed. The scheme of the present invention greatly improves the construction efficiency and ensures the construction accuracy by reducing the steps of repositioning.

[0091] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A floating underwater gravel bed continuous leveling vessel, comprising a hull (3), characterized in that: Liftable positioning piles (5) are provided at the bow and stern of the hull (3), and the positioning piles (5) are slidably connected to the hull (3); The positioning pile (5) is also arranged on the pontoon slide rail (15), and at least two positioning pile locking devices (51) are arranged near both ends of the pontoon slide rail (15), and the positioning pile (5) is arranged in the positioning pile locking devices (51) in a liftable manner; Two buoyancy box slide rails (15) are respectively slidably connected to the bow and stern of the hull (3); The hull (3) is also provided with at least two positioning pile locking devices (51) and positioning piles (5); The buoy slide rail (15) is provided with a draft water level regulating structure; A pontoon propulsion device (16) is provided at at least one end and at least one side of the pontoon slide rail (15); A slide rail (151) is provided on one side of the buoy slide rail (15), and a plurality of first position-limiting guide wheels (32) and second position-limiting guide wheels (33) in contact with the slide rail (151) are provided on the hull (3); A rack (152) is also provided near the slide rail (151); a driving gear (34) driven to rotate by a driving device is provided on the hull (3); the driving gear (34) is meshedly connected with the rack (152); a transport trolley (13) is also provided; the transport trolley (13) is driven by the driving device to slide along the length direction of the hull (3); a slide pipe is provided on the transport trolley (13); a feeding port (8) is provided at the top of the slide pipe; and a bottom end of the slide pipe is close to the bottom of the water; The slide pipe comprises a first slide pipe (1) and a second slide pipe (2) which are sleeved together; The first slide pipe (1) is connected to the second slide pipe (2) in a liftable manner, and a discharge port adjustment device (4) is provided at the bottom of the second slide pipe (2); A plurality of hoisting devices (14) are provided on the transport trolley (13), and the ends of the steel wire ropes of the hoisting devices (14) are connected to the second slide pipe (2); At least one conveyor belt is also provided for feeding the transport trolley (13); After the hull (3) reaches the limit position of the pontoon slide rail (15), the positioning piles (5) on the hull (3) are first driven into the bottom soil, and then the positioning piles (5) of the pontoon slide rail (15) on one side are pulled out, and the pontoon slide rail (15) is driven downward by the driving gear (34) until it reaches the limit position, and the positioning piles (5) of the pontoon slide rail (15) are driven down, and the pontoon slide rail (15) on the other side is moved to slide to the limit position, and the positioning piles (5) are driven down; the positioning piles (5) on the hull (3) are pulled out, and the paving construction of the gravel base bed (7) is continued.

2. A floating underwater gravel bed continuous leveling vessel according to claim 1, characterized in that: The hull (3) is provided with a slide rail space for accommodating the slide rail (151) so as to form a mutually engaging structure with the slide rail (151), and the first position limiting guide wheel (32) and the second position limiting guide wheel (33) are arranged on the inner side of the slide rail space; The buoyancy box slide rail (15) is connected to or disconnected from the hull (3) by adjusting the draft water level.

3. The floating underwater gravel bed continuous leveling vessel according to claim 1 is characterized by: In the discharge port adjustment device (4), the discharge port sleeve (46) is movably connected to the second slide pipe (2), a plurality of upper fixing frames (41) extending outward are provided on the outer wall of the second slide pipe (2), a plurality of lower fixing frames (43) extending outward are correspondingly provided on the outer wall of the discharge port sleeve (46), and an inclination adjustment cylinder (42) is provided between the upper fixing frames (41) and the lower fixing frames (43); A first inclination sensor (45) is also provided on the discharge port sleeve (46); A distance sensor (44) is provided at the bottom of the lower fixing frame (43) for detecting the distance between the discharge port sleeve (46) and the bottom of the base bed; A vibration device (47) is also provided on the discharge port sleeve (46).

4. A floating underwater gravel bed continuous leveling vessel according to claim 3, characterized in that: The oil ports at both ends of the tilt angle adjustment oil cylinder (42) are connected to the tilt angle reversing valve (421), the tilt angle reversing valve (421) is connected to the oil inlet pipe and the oil return pipe respectively, and the oil inlet pipe is provided with a second flow valve (422) and a second check valve (423); A plurality of oil inlet pipes are connected to a multi-position distribution solenoid valve (424), and the multi-position distribution solenoid valve (424) is connected to an oil supply pipe; The oil supply pipe is also connected to the pressure buffer tank (425).

5. The floating underwater gravel bed continuous leveling vessel according to claim 1 is characterized in that: A telescopic fixing device (6) is fixedly provided on the second slide pipe (2); a fixing bracket (61) of the telescopic fixing device (6) is fixedly connected to the second slide pipe (2); one or more fixing cylinders (62) are fixedly provided on the fixing bracket (61); a clamp is provided at the front end of a piston rod of the fixing cylinder (62); the clamp passes through the second slide pipe (2) and contacts the outer wall of the first slide pipe (1) for fixing the second slide pipe (2); A return spring is provided in the fixed cylinder (62); the oil port of the fixed cylinder (62) is connected to an oil inlet pipe and a first oil return pipe through a pipeline; the oil inlet pipe and the oil return pipe are connected to a reversing solenoid valve (624); and the reversing solenoid valve (624) is connected to an oil supply pipe and a second oil return pipe; A first flow valve (622) and a first check valve (623) are provided on the oil inlet pipe; A pressure sensor (621) is provided on the pipeline; The reversing solenoid valve (624) has two positions, each position having a connecting passage and a cut-off position, and the connecting passage and the cut-off position in the two positions are opposite.

6. The floating underwater gravel bed continuous leveling vessel according to claim 1 is characterized in that: The first slide pipe (1) is also provided with a stone detection device (101) for detecting the loading height of the stone; A GPS positioning device (103) is also provided on the first slide pipe (1); A total station prism (102) is also provided on the outer wall of the first slide pipe (1); A track (31) is provided along the length or width direction of the hull (3), and the transport trolley (13) is slidably mounted on the track (31). Winches (10) are provided at both ends of the track (31) for driving the transport trolley (13) to slide along the track (31); A first conveyor belt (12) is provided parallel to the track (31), and a second conveyor belt (9) is provided on the transport trolley (13). The inlet end of the second conveyor belt (9) is located below the first conveyor belt (12), and the outlet end of the second conveyor belt (9) is located above the feed port (8).

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