Bottom-supported leveling ship and underwater foundation bed leveling construction method

Abstract

The invention belongs to the technical field of foundation bed leveling construction, and relates to a bottom-supported leveling ship and an underwater foundation bed leveling construction method. The bottom-supported leveling ship comprises a ship body, a leveling platform truck and a leveling frame, the leveling trolley comprises a lower trolley in sliding connection with the leveling frame, and the lower trolley is provided with a plurality of stock bins and scrapers connected to the lower edges of all the stock bins. Trolley measuring towers are respectively mounted at two ends of the lower trolley in the length direction of the scraper; trolley positioning equipment is arranged at the top ends of the trolley measuring towers; height-adjustable supporting assemblies are installed at the bottoms of the two oppositely-arranged side frames of the leveling frame correspondingly. The two measuring towers and the positioning equipment on the measuring towers are arranged on the leveling trolley, so that the actual elevation of the scraper can be more directly and accurately obtained during leveling construction of the foundation bed so as to adjust the scraper, the scraper is ensured to always have good elevation precision during walking and leveling, and the leveling precision of the underwater foundation bed is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bed leveling construction, and particularly relates to a submersible leveling barge and an underwater bed leveling construction method. Background Art

[0002] Currently, during underwater bed leveling construction, many use submersible leveling barges for bed leveling. The submersible leveling barge uses a frame-type leveling machine, which is located in the open space in the middle of the barge hull; the leveling machine mainly consists of a square-shaped leveling frame, leveling bogies connected to the leveling frame, a plurality of bins on the leveling bogies, and scrapers at the lower edges of the bins. The leveling machine performs supplementary stone throwing and fine leveling operations on the bed that has been pre-thrown with stones and compacted. When the leveling barge is carrying out bed leveling construction, first lower the leveling frame to the preset position and elevation, then throw the stones in the bins onto the bed to be leveled, and then the leveling bogies drive the scrapers to move along the leveling frame to level the area where stones have been thrown, so as to achieve underwater bed leveling construction.

[0003] Currently, measurement towers are usually arranged at both ends of the top surface of the leveling frame, and positioning devices are provided at the tops of the measurement towers; after the leveling frame is lowered and seated on the bottom, use the positioning device to measure the elevation of the top surface of the leveling frame and adjust it to the preset frame elevation; when the leveling bogies drive the scrapers to walk and level, use the positioning device to observe the elevation of the top surface of the leveling frame. If it exceeds the allowable range, adjust the elevation of the top surface of the leveling frame to meet the preset frame elevation requirements during the process switching interval, so that the scrapers have high elevation accuracy when walking and leveling, thereby improving the underwater bed leveling accuracy.

[0004] However, the leveling frame itself is large in size and will undergo certain deformation, and the large-weight leveling bogies will also cause certain deflection deformation of the leveling frame when walking along the leveling frame. Therefore, the elevation of the entire top surface of the leveling frame is not actually completely consistent; and the elevation obtained by using the positioning device is actually the elevation at both ends of the leveling frame where the measurement towers are located, and cannot accurately reflect the elevation of the leveling frame at non-both ends. Therefore, it is impossible to ensure that the scrapers always have good elevation accuracy when walking and leveling between both ends of the leveling frame, thereby affecting the underwater bed leveling accuracy. Summary of the Invention

[0005] Aiming at the deficiencies in the related technologies, the invention provides a submersible leveling barge and an underwater bed leveling construction method, aiming to ensure that the scrapers always have good elevation accuracy when walking and leveling, thereby improving the underwater bed leveling accuracy.

[0006] The invention provides a submersible leveling barge, including a hull and a leveling machine located in the open space in the middle of the hull. The leveling machine includes leveling bogies and a square-shaped leveling frame; wherein, The integral platform vehicle includes a lower vehicle body slidably connected to the leveling frame. The lower vehicle body is equipped with multiple bins, and a scraper is connected to the lower edges of all the bins. At both ends of the lower vehicle body in the length direction of the scraper, vehicle body measuring towers are respectively installed, and vehicle body positioning devices are provided at the tops of the vehicle body measuring towers. The vehicle body positioning device is a GPS + prism integrated machine. Support assemblies with adjustable heights are installed at the bottoms of the two side frames of the leveling frame that are oppositely arranged.

[0007] In some embodiments, the integral platform vehicle further includes an upper vehicle body slidably connected to the hull. The upper vehicle body is equipped with multiple feeding hoppers corresponding to the multiple bins one by one. A feeding pipe is hinged between each feeding hopper and its corresponding bin. A rangefinder is installed on the feeding hopper near the vehicle body measuring tower, and the rangefinder is used to monitor the distance between the feeding hopper and the vehicle body measuring tower.

[0008] In some embodiments, the support assembly at the bottom of one side frame of the leveling frame includes a cushion beam extending along the length direction of the side frame and multiple jacking cylinders buried in the top surface of the cushion beam. The support assembly at the bottom of the other side frame includes multiple hydraulic legs. The multiple jacking cylinders and the multiple hydraulic legs jointly support the leveling frame in a liftable manner. When the bottom-sitting leveling ship is performing bed leveling construction, lower the leveling frame so that the cushion beam supports on the already leveled bed, and the multiple hydraulic legs support on the already tamped bed to be leveled.

[0009] In some embodiments, wing beams protrude from both sides of the lower part of the cushion beam in the width direction. The bottom surface of the wing beam is coplanar with the bottom surface of the cushion beam, and the top surface of the wing beam is inclined upward towards the cushion beam.

[0010] In some embodiments, multiple first limit blocks and multiple second limit blocks that flip upward are respectively provided on both sides of the top of the cushion beam in the width direction. The bottom of the side frame corresponding to the cushion beam is clamped between the first limit block and the second limit block. Two sets of stop blocks are provided oppositely protruding in the length direction of the bottom of the side frame corresponding to the cushion beam, and both ends of the cushion beam in the length direction are clamped between the two sets of stop blocks.

[0011] In some embodiments, multiple pulling cylinders are also buried in the top surface of the cushion beam. The bottom and the top of the pulling cylinder are respectively connected to the cushion beam and the leveling frame. The top of the hydraulic leg is connected to the leveling frame. When the cushion beam has not supported on the already leveled bed, the jacking cylinder contracts into the cushion beam, and the pulling cylinder contracts to the preset minimum stroke so that the cushion beam is pressed against the leveling frame. After the cushion beam supports on the already leveled bed, the pulling cylinder is depressurized, and the jacking cylinder extends to jack up the leveling frame.

[0012] The present invention also provides an underwater bed leveling construction method. Using the aforementioned bottom-sitting leveling ship to perform supplementary stone throwing and fine leveling operations on the already tamped bed to be leveled, the underwater bed leveling construction method includes the following steps: After the bottom - sitting leveling barge reaches the construction position, lower the leveling frame and make the two sets of support components support on the leveled bed and the bed to be leveled that has been tamped respectively; after the leveling frame is lowered, the trolley positioning device is exposed above the water surface; use the trolley positioning device to obtain the elevation of the scraper, and adjust the height of each support component to initially make the elevation of the scraper meet the preset scraper elevation. S2. Start the leveling trolley and make it travel from one end of the leveling frame to the other end; use the trolley positioning device to check whether the elevation of the scraper at this time meets the preset scraper elevation; if not, adjust the height of each support component so that the elevation of the scraper meets the preset scraper elevation; start the leveling trolley to travel along the leveling frame again, check the elevation of the scraper at this time and adjust the height of each support component as needed so that the elevation of the scraper meets the preset scraper elevation. S3. Throw a preset volume of stones in the bunker onto the bed to be leveled that has been tamped; check the elevation of the scraper at this time again and adjust the height of each support component as needed so that the elevation of the scraper meets the preset scraper elevation. S4. Start the leveling trolley to drive the scraper to move a preset leveling stroke along the leveling frame to level the area where the stones have been thrown to form a bed leveling layer; check the elevation of the scraper at this time again and adjust the height of each support component as needed so that the elevation of the scraper meets the preset scraper elevation. S5. Repeat steps S3 - S4 until the bed leveling construction at the current barge position is completed. S6. Lift the leveling frame to make the support components leave the bed, move the bottom - sitting leveling barge to the next barge position, and execute steps S1 - S5 again until the underwater bed leveling construction of the preset length is completed.

[0013] In some embodiments, in step S3, the particle size of the stones is 5 cm - 8 cm; in step S4, the average thickness of the bed leveling layer is 30 cm.

[0014] In some embodiments, the underwater bed leveling construction method further includes a calibration step, which is carried out in the dock and includes the following steps: Lift the hull of the bottom - sitting leveling barge, lower the leveling frame to the ground and level it. Set up a total station on the ground, place prisms at both ends in the length direction of the scraper, and use the total station to calibrate the relative elevation relationship between the two trolley positioning devices and the scraper.

[0015] In some embodiments, in steps S2 - S4, use the elevation measurement data of the two trolley positioning devices, and combine with the calibrated relative elevation relationship between the two trolley positioning devices and the scraper to obtain the elevation of the scraper; set up a total station on the shore base, and use the total station to observe the two trolley positioning devices to verify the elevation of the scraper.

[0016] Based on the above technical solution, in the bottom-sitting leveling barge and the underwater bed leveling construction method in the embodiments of the present invention, by arranging trolley measuring towers and trolley positioning devices at the top of the towers at both ends of the lower trolley of the leveling platform vehicle, the actual elevation of the scraper can be obtained more directly and accurately during the bed leveling construction; by means of the empty scraping of the leveling platform vehicle after the leveling frame sits on the bottom to eliminate the instantaneous settlement and check the elevation of the scraper, and the elevation of the scraper is checked and adjusted after each stone throwing and each scraping, it is ensured that the scraper always has good elevation accuracy during the walking and leveling process, thereby significantly improving the underwater bed leveling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 is the front view of the bottom-sitting leveling barge of the present invention before the leveling frame is lowered; Figure 2 is the top view of the bottom-sitting leveling barge of the present invention before the leveling frame is lowered; Figure 3 is the front view of the bottom-sitting leveling barge of the present invention after the leveling frame sits on the bottom; Figure 4 is Figure 3 the A-A sectional view of; Figure 5 is the schematic diagram of the leveling frame equipped with the support assembly in the present invention; Figure 6 is the bottom view of the leveling frame equipped with the support assembly in the present invention; Figure 7 is the overall schematic diagram of the cushion beam in the present invention; Figure 8 is the sectional view at the cushion beam lifting oil cylinder in the present invention; Figure 9 is the sectional view at the cushion beam pulling and closing oil cylinder in the present invention; Figure 10 is the flow chart of the underwater bed leveling construction method in the present invention.

[0018] In the figure: 10. leveling frame; 11. side frame; 12. stop block; 20. cushion beam; 21. wing beam; 22. first limit block; 23. second limit block; 30. lifting oil cylinder; 31. cylinder sleeve; 32. plunger; 40. pulling and closing oil cylinder; 41. cylinder barrel; 42. piston rod; 43. connecting seat; 50. hydraulic support leg; 60. leveling platform vehicle; 61. hopper; 611. level gauge; 62. scraper; 63. feeding hopper; 64. feeding pipe; 65. trolley measuring tower; 70. hull; 71. winch; 72. suspension cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0021] The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] Referring Figures 1 - 10 As shown, the present invention provides a bottom-sitting leveling ship, which includes a hull 70, a measurement and control system, and a leveling machine located in the central opening space of the hull 70. The leveling machine includes a leveling platform vehicle 60 and a square-shaped leveling frame 10.

[0024] A plurality of winches 71 are provided on the hull 70, and the plurality of winches 71 lower or lift the leveling frame 10 through suspension cables 72. Hull measurement towers (not shown) are respectively installed at the front and rear ends of the hull 70, and hull positioning devices are provided at the tops of the hull measurement towers.

[0025] The leveling platform trolley 60 includes a lower trolley slidably connected to the leveling frame 10, and the lower trolley is equipped with multiple silos 61, and a scraper 62 is connected to the lower edge of all silos 61; the lower trolley is respectively equipped with a trolley measuring tower 65 at both ends of the length direction of the scraper 62, and a trolley positioning device is provided at the top of the trolley measuring tower 65. A set of height-adjustable support components are installed at the bottom of the two side frames 11 opposite to each other of the leveling frame 10; the measurement and control system is connected to the support components in communication, and the leveling frame 10 is raised and lowered by remotely adjusting the height of each support component.

[0026] It should be noted that the hull positioning device and the trolley positioning device are both GPS+prism all-in-one machines; the GPS+prism all-in-one machine includes a coaxially arranged GPS device and a 360° prism, which can meet the needs of GPS and total station measurement and positioning methods at the same time in actual applications.

[0027] To further illustrate, when a bottom-mounted leveling ship is performing base bed leveling construction, before the leveling platform trolley 60 drives the scraper 62 to move and level, two trolley positioning devices can be used to obtain the actual elevation of the scraper 62, and then the elevation of the scraper 62 can be adjusted to meet the preset scraper elevation by adjusting the height of each supporting component, thereby improving the elevation accuracy of the scraper 62 when moving and leveling.

[0028] In the above-mentioned schematic embodiment, by arranging a trolley measuring tower 65 at both ends of the trolley under the whole platform trolley 60 and a trolley positioning device on the top of the tower, the actual elevation of the scraper 62 can be obtained more directly and accurately during the base bed leveling construction to adjust it, ensuring that the scraper 62 has good elevation accuracy when leveling, thereby improving the underwater base bed leveling accuracy.

[0029] refer to Figures 1 - 3 As shown, in some embodiments, the whole platform vehicle 60 further includes an upper vehicle slidably connected to the hull 70, and the upper vehicle is equipped with a plurality of feeding hoppers 63 corresponding to the plurality of silos 61, and a conveying pipe 64 is hinged between each feeding hopper 63 and its corresponding silo 61, that is, the two ends of the conveying pipe 64 are respectively hinged to the lower end of the feeding hopper 63 and the upper end of the silo 61; it can be understood by those skilled in the art that before the leveling frame 10 is lowered, the leveling frame 10 is retracted. It is received in the opening space of the hull 70, the feed pipe 64 is in an inclined state, the upper trolley and the lower trolley are staggered in the horizontal direction, the feeding hopper 63 and the silo 61 are also staggered, and the trolley measuring tower 65 is located on the side of the lower trolley away from the feeding hopper 63; after the leveling frame 10 is lowered, the leveling frame 10 is located under the hull 70, the feed pipe 64 is in a vertical state, the upper trolley and the lower trolley are in an up-and-down alignment state, and the feeding hopper 63 and the silo 61 are also in an up-and-down alignment state.

[0030] Furthermore, a rangefinder (not shown) is installed on the feeding hopper 63 closest to the trolley measuring tower 65. The rangefinder is used to monitor the distance between the feeding hopper 63 and the trolley measuring tower 65 and transmit the monitoring result to the measurement and control system on the jacking-up type leveling barge. In case the distance exceeds the allowable value due to abnormal operations or other reasons, the measurement and control system will give an alarm and stop work for inspection, thereby ensuring the reliability and safety of the trolley measuring tower 65 and the trolley positioning equipment thereon.

[0031] Reference Figure 4 、 Figure 5 、 Figure 7 As shown in , in some embodiments, the support assembly at the bottom of one side frame 11 of the leveling frame 10 includes a cushion beam 20 extending along the length direction of the side frame 11 and a plurality of jacking cylinders 30 buried in the top surface of the cushion beam 20. The plurality of jacking cylinders 30 are arranged at intervals along the length direction of the cushion beam 20. Specifically, the jacking cylinder 30 includes a cylinder sleeve 31 and a plunger 32 arranged coaxially. The bottom end of the cylinder sleeve 31 is connected to the cushion beam 20, and the plunger 32 is inserted at the top end. The plunger 32 includes a plunger head and a piston rod connected to each other. The plunger head is slidably connected in the cylinder sleeve 31 and is in dynamic sealing connection with the inner wall of the cylinder sleeve 31. The piston rod penetrates the cylinder sleeve 31 in a sealed manner, and the plunger 32 can reciprocate axially along the cylinder sleeve 31, thereby making the height of the support assembly adjustable. The support assembly at the bottom of the other side frame 11 of the leveling frame 10 includes a plurality of hydraulic legs 50, and the hydraulic legs 50 can be telescoped up and down. Therefore, the plurality of jacking cylinders 30 and the plurality of hydraulic legs 50 jointly support the leveling frame 10 in a liftable manner.

[0032] In some embodiments, the number of the jacking cylinders 30 is five. Two jacking cylinders 30 are arranged at each end of the cushion beam 20 in the length direction, and one jacking cylinder 30 is arranged in the middle of the cushion beam 20 in the length direction. The number of the hydraulic legs 50 is two, and the two hydraulic legs 50 are respectively located at both ends of the cushion beam 20 in the length direction.

[0033] During the construction of the bed leveling of the jacking-up type leveling barge, lower the leveling frame 10 so that the cushion beam 20 supports on the leveled bed, and the plurality of hydraulic legs 50 support on the tamped bed to be leveled, thereby realizing the bottom sitting of the leveling frame 10. It should be noted that the measurement and control system on the jacking-up type leveling barge is communicatively connected to both the jacking cylinders 30 and the hydraulic legs 50, and the working strokes of the respective jacking cylinders 30 and the hydraulic legs 50 are remotely adjusted to lift and lower the leveling frame 10.

[0034] In the above-described exemplary embodiments, through the provision of the cushion beam 20, compared with the multi-leg and multi-point support method commonly used for the current leveling frame 10, the contact area between the support assembly and the leveled bed is significantly increased in this embodiment, and the load on the leveled bed by the support assembly is greatly reduced. Furthermore, the settlement amount of the support assembly and the leveled bed it presses against is significantly reduced and the settlement is made uniform, ensuring that the top elevation and leveling accuracy of the leveled bed are not affected by subsequent leveling construction of the bed and still meet the engineering quality requirements; through the provision of the jacking cylinder 30 and the hydraulic legs 50, it is convenient to lift and lower the leveling frame 10, thereby adjusting the elevation of the scraper 62.

[0035] Reference Figures 7 - 9 As shown, in some embodiments, wing beams 21 protrude from both sides in the width direction at the lower part of the cushion beam 20. The bottom surface of the wing beam 21 is coplanar with the bottom surface of the cushion beam 20, and the top surface of the wing beam 21 is inclined upward towards the cushion beam 20; thus, through the provision of the wing beam 21, the overall structural strength of the cushion beam 20 is enhanced, and the contact area between the cushion beam 20 and the leveled bed is increased, further reducing the settlement amount of the cushion beam 20, that is, reducing the settlement amount of the leveled bed in contact with the cushion beam 20, better ensuring that the top elevation and leveling accuracy of the leveled bed meet the engineering quality requirements, and also minimizing the subsequent settlement amount of the cushion beam 20 during the bed leveling construction process, further improving the state stability during the walking and leveling of the scraper 62, and thus improving the bed leveling accuracy.

[0036] In some embodiments, to further reduce the settlement amount of the cushion beam 20, the bases of the driving and driven sprockets for driving the leveling trolley 60 are changed from the commonly used steel bases to engineering plastic bases, the sprocket brackets are changed from the commonly used steel brackets to engineering plastic brackets, and the sprocket axle sleeves are changed from the commonly used steel sleeves to high molecular nylon sleeves. Thus, through material modification, the vibration during the operation of the sprockets and the anchor chain is reduced, and further, the situation of the cushion beam 20 settling due to vibration is reduced, which is beneficial to improving the bed leveling accuracy. Further, the installation state of the anchor chain is adjusted, and chain supports are added according to the position of the tightened state of the anchor chain. Since the anchor chain has a certain arc after being tightened, with one side low and the other side high, the chain supports follow the height of the anchor chain to reduce the vibration of the rigid structure, so as to reduce the influence on the settlement of the cushion beam 20; in addition, to reduce the situation that the anchor chain is prone to vibration and jamming due to its long length, marks are made on the anchor chain at certain intervals to ensure the installation accuracy of the sprocket and the anchor chain, reduce the vibration and jamming situation during the operation of the anchor chain, avoid affecting the walking accuracy, and also reduce the influence on the settlement of the cushion beam 20.

[0037] Reference Figures 6 - 9As shown, in some embodiments, on both sides in the width direction of the top of the cushion beam 20, a plurality of first limiting blocks 22 and a plurality of second limiting blocks 23 that are turned upwards are respectively provided. The bottom of the side frame 11 corresponding to the cushion beam 20 is clamped between the first limiting block 22 and the second limiting block 23. On the length direction of the bottom of the side frame 11 corresponding to the cushion beam 20, two sets of stoppers 12 that are oppositely arranged are convexly provided. Both ends in the length direction of the cushion beam 20 are clamped between the two sets of stoppers 12. Through the arrangement of the first limiting block 22, the second limiting block 23 and the stopper 12 in this illustrative embodiment, the matching limit between the cushion beam 20 and the leveling frame 10 is realized, avoiding the relative crosstalk between the two. In addition, during the construction of the bed leveling, in case the leveling frame 10 deflects due to reasons such as the large local resistance of the scraper 62 for scraping and leveling, the first limiting block 22 and the second limiting block 23 on the cushion beam 20 can play a role in stopping the rotation of the leveling frame 10, avoiding the situation that the leveling frame 10 may deflect and affect the construction quality of the bed leveling, ensuring the state stability of the leveling frame 10 during the construction of the bed leveling, and being beneficial to improving the bed leveling quality.

[0038] Reference Figure 7 、 Figure 9 As shown, in some embodiments, a plurality of pulling cylinders 40 are also embedded in the top surface of the cushion beam 20. The bottom of the pulling cylinder 40 is connected to the cushion beam 20, and the top of the pulling cylinder 40 is connected to the leveling frame 10, while the top of the lifting cylinder 30 is not fixedly connected to the leveling frame 10. Specifically, the number of the pulling cylinders 40 is two, and the two pulling cylinders 40 are respectively located on both sides of the lifting cylinder 30 in the middle of the cushion beam 20. Thus, through the arrangement of the pulling cylinders 40, the connection between the cushion beam 20 and the leveling frame 10 is realized. The top of the hydraulic support leg 50 is connected to the leveling frame 10.

[0039] Furthermore, the pulling cylinder 40 includes a cylinder barrel 41 and a piston rod 42 that are coaxially arranged. One end of the cylinder barrel 41 is hinged to the inside of the cushion beam 20 through a connecting seat 43, and the other end is inserted with the piston rod 42. The piston rod 42 includes a piston head and a connecting rod that are connected to each other. The piston rod 42 is slidably connected to the inside of the cylinder barrel 41 and is in dynamic seal connection with the inner wall of the cylinder barrel 41. The connecting rod is hermetically penetrated through the cylinder barrel 41 and is hinged to the leveling frame 10 through a connecting seat 43, and the piston rod 42 can reciprocate axially along the cylinder barrel 41.

[0040] When the leveling frame 10 moves with the bottom - sitting leveling ship or when the cushion beam 20 has not yet been supported on the leveled foundation bed, the lifting oil cylinder 30 retracts into the cushion beam 20, that is, the top surface of the lifting oil cylinder 30 does not contact the leveling frame 10, and the pulling - together oil cylinder 40 retracts to the preset minimum stroke so that the cushion beam 20 is pressed against the leveling frame 10; thus ensuring that there is no relative movement between the cushion beam 20 and the leveling frame 10 when the leveling frame 10 is displaced, and further ensuring the towing safety of the cushion beam 20. After the cushion beam 20 is supported on the leveled foundation bed, the pulling - together oil cylinder 40 is depressurized, and the lifting oil cylinder 30 extends to lift the leveling frame 10; when the lifting oil cylinder 30 extends, the pulling - together oil cylinder 40 will extend accordingly; to ensure the safe and reliable performance of the pulling - together oil cylinder 40, it is necessary to ensure that when the lifting oil cylinder 30 extends to the preset maximum lifting stroke, the pulling - together oil cylinder 40 does not extend to the preset maximum stroke. The measurement and control system on the bottom - sitting leveling ship is also communicatively connected to the pulling - together oil cylinder 40 to remotely control the contraction or depressurization of the pulling - together oil cylinder 40.

[0041] Furthermore, a plurality of cushion blocks (not shown) are convexly provided on the top surface of the cushion beam 20; when the pulling - together oil cylinder 40 retracts to the preset minimum stroke, the cushion blocks are pressed against the bottom surface of the leveling frame 10, thereby pulling together the cushion beam 20 and the leveling frame 10; it should be noted that the preset minimum stroke of the pulling - together oil cylinder 40 is greater than zero. This schematic embodiment, through the setting of the cushion blocks, avoids the possibility that the pulling - together oil cylinder 40 is over - retracted and locked or damaged under force during misoperation.

[0042] Reference Figures 1 - 10 As shown in the figure, the present invention also provides an underwater foundation bed leveling construction method, which uses the aforementioned bottom - sitting leveling ship to perform supplementary stone - throwing fine leveling operations on the tamped foundation bed to be leveled; the underwater foundation bed leveling construction method includes the following steps: S1. The bottom - sitting leveling ship sails to the construction area, and uses the hull positioning equipment to accurately position the bottom - sitting leveling ship at the position to be constructed; lower the leveling frame 10, and lower the leveling frame 10 to the preset elevation position by controlling the lowering length of the lifting cable 72, and make the two sets of support components respectively support on the leveled foundation bed and the tamped foundation bed to be leveled. Specifically, the cushion beam 20 supports on the leveled foundation bed, and a plurality of hydraulic legs 50 support on the tamped foundation bed to be leveled; after the leveling frame 10 is lowered, the trolley positioning equipment at the top of the trolley measuring tower 65 is exposed above the water surface; obtain the elevation of the scraper 62 by using the trolley positioning equipment on the trolley measuring tower 65, and adjust the height of each support component to initially make the elevation of the scraper 62 meet the preset scraper elevation.

[0043] S2. Start the leveling trolley 60 and make it travel from one end of the leveling frame 10 to the other end, that is, the leveling trolley 60 scrapes empty once; the weight of the leveling trolley 60 is relatively heavy, about 100t, so it can eliminate the instantaneous settlement of the bottom support components of the leveling frame 10. The elevation of the scraper 62 is obtained by using the trolley positioning device on the trolley measuring tower 65 to check whether the elevation of the scraper 62 at this time meets the preset scraper elevation; if the elevation of the scraper 62 does not meet the preset scraper elevation, the heights of the respective support components are adjusted so that the elevation of the scraper 62 meets the preset scraper elevation; the leveling trolley 60 is started again to travel along the leveling frame once, and the elevation of the scraper 62 at this time is checked and the heights of the respective support components are adjusted as required so that the elevation of the scraper 62 meets the preset scraper elevation; thus, the leveling frame 10 can be leveled.

[0044] S3. Throw the preset volume of stone materials in the bunker 61 onto the compacted foundation bed to be leveled; after the stone throwing is completed, check the elevation of the scraper 62 again and adjust the heights of the respective support components as required so that the elevation of the scraper 62 meets the preset scraper elevation.

[0045] S4. Start the leveling trolley 60 to drive the scraper 62 to move a preset leveling stroke along the leveling frame 10; during the movement of the scraper 62, the stone materials at the high places are pushed to the low places to fill in, and the area where the stone has been thrown is carefully scraped and gradually compacted, so as to form a flat and dense foundation bed leveling layer on the compacted foundation bed to be leveled; check the elevation of the scraper 62 again and adjust the heights of the respective support components as required so that the elevation of the scraper 62 meets the preset scraper elevation. Further, the preset leveling stroke can be set to about 2 m, and the volume of the stone materials thrown in step S3 should meet the requirements for one leveling stroke.

[0046] S5. Repeat steps S3 to S4 until the construction of the foundation bed leveling at the current ship position is completed; that is, after each stone throwing, check the elevation of the scraper 62 and adjust it as required, and then the scraper 62 moves for scraping; after each preset leveling stroke of the foundation bed leveling is completed, check the elevation of the scraper 62 and adjust it as required, and then throw the stones again. According to this process, until the construction of the foundation bed leveling under the current ship position is completed.

[0047] S6. Lift the leveling frame 10 to make the support components leave the foundation bed, and the submersible leveling barge moves to the next ship position, and then execute steps S1 to S5 again until the underwater foundation bed leveling construction of the preset length is completed.

[0048] Furthermore, the elevation accuracy of the scraping blade 62 is directly related to the accuracy of bed leveling. By installing trolley measuring towers 65 and trolley positioning devices at the tops of the two ends of the lower trolley of the leveling trolley 60, the actual elevation of the scraping blade 62 can be obtained more directly and accurately. Furthermore, the elevation of the scraping blade 62 can be finely adjusted by adjusting the height of the support assembly, thereby solving the problem in the prior art that it is difficult to ensure the elevation accuracy of the scraping blade 62 when using the measuring towers and positioning devices at both ends of the leveling frame 10 to adjust the elevation of the frame. In addition, in step S2, after the leveling frame 10 is seated on the bottom, the leveling trolley 60 performs empty scraping, which has eliminated the instantaneous settlement of the bottom support assembly of the leveling frame 10. However, in the subsequent bed leveling construction, due to the relatively long overall construction time and the influence of stone throwing, scraping, and time effect, the support assembly will still undergo slow settlement. Therefore, after each stone throwing and each scraping, by using the gap between process switches, the elevation of the scraping blade 62 is checked and the height of the support assembly is adjusted as needed to better overcome the influence of settlement and further ensure that the scraping blade 62 always has good elevation accuracy throughout the bed leveling construction process.

[0049] In the above-mentioned exemplary embodiment, by means of empty scraping the leveling trolley 60 after the leveling frame 10 is seated on the bottom to eliminate the instantaneous settlement and check the elevation of the scraping blade, and by setting a trolley positioning device on the leveling trolley 60 to measure the elevation of the scraping blade 62 and checking and adjusting the elevation of the scraping blade 62 after each stone throwing and each scraping, it is ensured that the scraping blade 62 always has good elevation accuracy during the walking and leveling process throughout the underwater bed leveling construction, thereby effectively improving the underwater bed leveling accuracy.

[0050] Reference Figure 4 As shown, in some embodiments, in step S3, the particle size of the stone is 5 cm to 8 cm; in step S4, the average thickness of the bed leveling layer is 30 cm. It should be noted that in the traditional bed leveling process, two-piece stones are usually used during bed leveling construction. The particle size of the two-piece stones is 8 cm to 15 cm, and the thickness of the bed leveling layer is about 50 cm. Its thickness is relatively thick, so the settlement amount is large and difficult to control, which is not conducive to improving the bed leveling accuracy. In this embodiment, vibration compaction technology is used for bed compaction, the bed compaction rate is not less than 15%, and the particle size of the stone is reduced and the thickness of the bed leveling layer is decreased, thereby facilitating the control of bed settlement and reducing the bed settlement amount, which is beneficial to improving the bed leveling accuracy.

[0051] Reference Figure 4As shown, in some embodiments, level gauges 611 are respectively arranged at the upper and lower parts of each bin 61 of the integral platform vehicle 60, and the multiple level gauges 611 of each bin 61 are basically arranged in an equilateral triangle; when the uppermost level gauge 611 has a signal, it means that the bin 61 is full and no more feeding is required, avoiding excessive stones in the bin 61 from scattering from the top and affecting the leveling accuracy; when the lowermost level gauge 611 has a signal, it means that the stones in the bin 61 can meet the requirements for stone throwing under the minimum leveling stroke, avoiding the situation of insufficient stones in the bin 61 resulting in an unfilled and incomplete foundation bed. Thus, precise material control during the foundation bed leveling construction process is achieved.

[0052] Reference Figures 1 - 3 As shown, in some embodiments, the underwater foundation bed leveling construction method further includes a calibration step, which is carried out in a dry dock and includes the following steps: Lift the hull 70 of the jack-up leveling barge, lower the leveling frame 10 so that the supporting components at its bottom support on the ground to simulate the actual situation when the leveling barge is carrying out foundation bed leveling construction, and adjust the height of the supporting components to make the top surface of the leveling frame 10 horizontal; Set up a total station on the ground, place prisms at both ends in the length direction of the scraper 62, use the total station to statically observe the prisms in the GPS + prism integrated machine at the top of the measurement towers of the two trolleys and the prisms on the scraper 62 at one station. The observation time for each observation point can be set to 5 minutes. After obtaining multiple sets of data, calculate the average value. Thus, the relative elevation relationship between the two trolley positioning devices and the scraper 62 is obtained and stored in the measurement and control system, and then the calibration is completed; during the subsequent foundation bed leveling construction, the elevation of the scraper 62 can be known through the measurement data of the trolley positioning devices.

[0053] In addition, the calibration step further includes setting up a total station on the deck of the hull 70, placing prisms at the four corners of the hull 70, using the total station to statically observe the prisms in the GPS + prism integrated machine at the top of the two hull measurement towers and the prisms at the four corners of the hull 70, obtaining the relative position relationship between the two hull positioning devices at the front and rear of the hull 70 and the four corners of the hull 70, and completing the calibration of the relative position relationship between the hull positioning devices and the four corners of the hull 70; when the jack-up leveling barge is carrying out foundation bed leveling operations, using the coordinate information of the two sets of GPS + prism integrated machines at the front and rear of the hull 70, combined with the calibrated relative position relationship between the hull positioning devices and the four corners of the hull 70, the position information of the hull 70 can be known, and then it is convenient for the jack-up leveling barge to be more quickly and accurately positioned at the construction position to be constructed.

[0054] In some embodiments, in the calibration step, the calibration of the relative elevation relationship between the two trolley positioning devices and the scraper 62 is carried out between 4 am and 6 am; because the land environmental temperature is relatively stable during this period and is close to the underwater environmental temperature during the foundation bed leveling construction, it can make the calibration work more accurate and is beneficial to improving the underwater foundation bed leveling construction accuracy.

[0055] Reference Figure 3 As shown, in some embodiments, in steps S2 to S4, the elevation measurement data of two trolley positioning devices are utilized, and in combination with the relative elevation relationship between the two calibrated trolley positioning devices and the scraper 62, the elevation of the scraper 62 is obtained; a total station is set up on the shore base, and the two trolley positioning devices are observed by the total station to verify and check the elevation of the scraper 62.

[0056] Further explanation, the elevation data of the scraper 62 can take the average value of the elevation data within 5 minutes; if the difference between the measurement result and the preset scraper elevation does not exceed 5 mm, it is considered that the elevation of the scraper 62 meets the preset scraper elevation; if the difference between the measurement result and the preset scraper elevation exceeds 5 mm, the elevation of the scraper 62 needs to be adjusted. Thus, the scraper 62 can be measured and positioned more accurately, the elevation accuracy of the scraper 62 is improved, and further the bed leveling accuracy is improved.

[0057] Through the description of multiple embodiments of the bottom - sitting leveling barge and the underwater bed leveling construction method of the present invention, it can be seen that the present invention has at least one or more of the following advantages: 1) By arranging trolley measurement towers 65 at both ends of the lower trolley of the leveling trolley 60 and the trolley positioning devices at the tops of the towers, the actual elevation of the scraper 62 can be obtained more directly and accurately during the bed leveling construction; by means of the empty scraping of the leveling trolley 60 after the leveling frame 10 sits on the bottom to eliminate the instantaneous settlement and check the elevation of the scraper 62, and by checking and adjusting the elevation of the scraper 62 after each stone throwing and each scraping, it is ensured that the scraper 62 always has good elevation accuracy during walking and leveling, and further the bed leveling accuracy is significantly improved; 2) Through the setting of the cushion beam 20, the settlement amount of the already leveled bed pressed against the cushion beam 20 is significantly reduced and the settlement is made uniform, improving the state stability of the leveling frame 10 and the scraper 62 during the bed leveling construction process; by throwing stones with a particle size of 5 cm - 8 cm and setting the average thickness of the bed leveling layer to 30 mm, it is beneficial to reduce the bed settlement amount and improve the bed leveling accuracy; 3) The underwater bed leveling construction method of the present invention uses a bottom - sitting leveling barge for bed leveling, which can meet the bed leveling construction requirements under different water depths, reduces the labor cost, improves the safety and efficiency of the leveling construction, increases the available number of days for water - based operations, and has significant economic benefits; moreover, it significantly improves the underwater bed leveling accuracy and can be applied to occasions with higher requirements for underwater bed leveling accuracy, such as the construction of deep - water ports, the laying of submarine pipelines or cables, etc.

[0058] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or some technical features can be equivalently replaced without departing from the spirit of the technical solutions of the present invention, and they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. Bottom-sitting leveling boat, characterized in that: It includes a hull and a leveling machine located in the middle opening space of the hull, wherein the leveling machine includes a leveling platform vehicle and a U-shaped leveling frame; wherein, The leveling platform vehicle comprises a lower vehicle slidably connected to the leveling frame, the lower vehicle is equipped with a plurality of silos, and a scraper is connected to the lower edge of all the silos; the lower vehicle is respectively equipped with a trolley measuring tower at both ends of the scraper length direction, and a trolley positioning device is provided at the top of the trolley measuring tower; the trolley positioning device is a GPS+prism integrated machine; The bottoms of two side frames arranged opposite to each other on the leveling frame are both equipped with height-adjustable support components.

2. The bottom-sit leveling boat according to claim 1, characterized in that: The whole platform vehicle also includes an upper trolley slidably connected to the hull, and the upper trolley is equipped with multiple feeding hoppers corresponding to multiple silos one by one, and a material conveying pipe is hinged between each feeding hopper and its corresponding silo; a distance meter is installed on the feeding hopper close to the trolley measuring tower, and the distance meter is used to monitor the distance between the feeding hopper and the trolley measuring tower.

3. The bottom-sitting leveling boat according to claim 1, characterized in that: The support assembly at the bottom of one side frame of the leveling frame includes a cushion beam extending along the length direction of the side frame and a plurality of lifting cylinders buried in the top surface of the cushion beam, and the support assembly at the bottom of the other side frame includes a plurality of hydraulic legs, and the plurality of lifting cylinders and the plurality of hydraulic legs jointly provide liftable support for the leveling frame; when the bottom-sitting leveling ship is performing base bed leveling construction, the leveling frame is lowered so that the cushion beam is supported on the leveled base bed, and the plurality of hydraulic legs are supported on the compacted base bed to be leveled.

4. The bottom-sitting leveling boat according to claim 3, characterized in that: Wing spars are protrudingly provided on both sides of the lower part of the cushion beam in the width direction, the bottom surface of the wing spars is coplanar with the bottom surface of the cushion beam, and the top surface of the wing spars is inclined upward toward the cushion beam.

5. The bottom-sitting leveling boat according to claim 3, characterized in that: A plurality of first limit blocks and a plurality of second limit blocks which are flipped upward are respectively provided on both sides of the top width direction of the cushion beam, and the bottom of the side frame corresponding to the cushion beam is clamped between the first limit blocks and the second limit blocks; two groups of stop blocks which are relatively arranged are protruded in the length direction of the bottom of the side frame corresponding to the cushion beam, and the two ends of the cushion beam in the length direction are clamped between the two groups of stop blocks.

6. The bottom-sitting leveling boat according to claim 3, characterized in that: A plurality of pulling and closing cylinders are also buried in the top surface of the cushion beam, and the bottom and top of the pulling and closing cylinders are respectively connected to the cushion beam and the leveling frame; the top of the hydraulic leg is connected to the leveling frame; when the cushion beam has not yet been supported on the leveled base bed, the lifting cylinder is retracted in the cushion beam, and the pulling and closing cylinder is retracted to a preset minimum stroke to allow the cushion beam to be pressed against the leveling frame; after the cushion beam is supported on the leveled base bed, the pulling and closing cylinder is depressurized, and the lifting cylinder is extended to lift the leveling frame.

7. An underwater bed leveling construction method, characterized in that: The bottom-seated leveling vessel of claim 1 is used to perform supplementary riprap fine leveling operations on the compacted base bed to be leveled. The underwater base bed leveling construction method comprises the following steps: S1. After the bottom-seated leveling boat arrives at the construction location, the leveling frame is lowered and two sets of support components are supported on the leveled base bed and the compacted base bed to be leveled respectively; after the leveling frame is lowered, the trolley positioning device is exposed outside the water surface; the scraper elevation is obtained by using the trolley positioning device, and the height of each support component is adjusted to preliminarily make the scraper elevation meet the preset scraper elevation; S2, start the whole platform trolley and make it move from one end of the leveling frame to the other end; use the trolley positioning device to check whether the scraper elevation at this time meets the preset scraper elevation; if not, adjust the height of each support assembly so that the scraper elevation meets the preset scraper elevation; start the whole platform trolley again and move it along the leveling frame, check the scraper elevation at this time and adjust the height of each support assembly as needed so that the scraper elevation meets the preset scraper elevation; S3, throwing a preset amount of stone in the silo onto the compacted base bed to be leveled; rechecking the scraper elevation at this time and adjusting the height of each support assembly as needed, so that the scraper elevation meets the preset scraper elevation; S4, start the leveling platform vehicle to drive the scraper to move along the leveling frame for a preset leveling stroke, level the riprap area to form a base bed leveling layer; check the scraper elevation again and adjust the height of each support assembly as needed to make the scraper elevation meet the preset scraper elevation; S5, repeating steps S3 to S4 until the bed leveling construction of the current ship position is completed; S6, lift the leveling frame to make the support assembly leave the base bed, move the bottom-seated leveling vessel to the next ship position, and perform steps S1 to S5 again until the underwater base bed leveling construction of the preset length is completed.

8. The underwater bed leveling construction method according to claim 7, characterized in that: In step S3, the particle size of the stone is 5 cm to 8 cm; in step S4, the average thickness of the base bed leveling layer is 30 cm.

9. The underwater bed leveling construction method according to claim 7, characterized in that: The underwater bed leveling construction method further includes a calibration step, which is performed in a dock and includes the following steps: Lifting the hull of the bottom-sitting leveling boat, lowering the leveling frame to the ground and leveling it; A total station is set up on the ground, prisms are placed at both ends of the scraper in the length direction, and the total station is used to calibrate the relative elevation relationship between the two trolley positioning devices and the scraper.

10. The underwater bed leveling construction method according to claim 9, characterized in that: In steps S2 to S4, the scraper elevation is obtained by utilizing the elevation measurement data of the two trolley positioning devices and combining the calibrated relative elevation relationship between the two trolley positioning devices and the scraper; a total station is set up on the shore, and the two trolley positioning devices are observed using the total station to verify the scraper elevation.

Images