A Method for Elevation Adjustment of the Levelling Frame of a Jack-up Levelling Barge

Abstract

The present invention belongs to the technical field of bed leveling construction, and relates to a method for adjusting the elevation of a leveling frame of a submersible leveling ship, which includes: S1. Install the first and second support components on the bottom parts of the opposite side frames of the leveling frame respectively; the first support component includes a cushion beam and a plurality of jacking cylinders buried in the top surface of the cushion beam; the second support component includes a plurality of hydraulic legs; S2. Lower the leveling frame so that the cushion beam supports on the leveled bed and the hydraulic legs support on the tamped bed to be leveled; adjust the working strokes of each jacking cylinder and hydraulic leg to initially make the elevations of the four corners of the leveling frame meet the requirements; S3. Start the leveling trolley and walk from one end of the leveling frame to the other end; S4. Check whether the elevations of the four corners of the leveling frame meet the requirements at this time; if not, adjust the elevations of the four corners of the leveling frame and execute steps S3 to S4 again; if so, complete the elevation adjustment. The present invention can improve the elevation accuracy of the leveling frame, and further improve the bed leveling accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of bed leveling construction, and particularly relates to a method for adjusting the elevation of a leveling frame of a bottom-sitting leveling ship. Background Art

[0002] Currently, when performing underwater bed leveling operations, many use bottom-sitting leveling ships for bed leveling. The bottom-sitting leveling ship uses a frame-type leveling machine, which is located in the open space in the middle of the hull of the leveling ship; the leveling machine mainly consists of a square-shaped leveling frame, leveling trolleys connected to the leveling frame, multiple bins on the leveling trolleys, and scrapers at the lower edge 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 ship performs bed leveling operations, it first lowers the leveling frame to a preset position and elevation, then throws the stones in the bins onto the bed to be leveled, and then the leveling trolleys drive the scrapers to move along the leveling frame to level the area where the stones have been thrown, thereby achieving the bed leveling operation.

[0003] Currently, multiple legs are usually provided at the bottom of the leveling frame. The bottoms of the legs are generally pressed against the water bottom or the foundation trench. By adjusting the heights of the legs, the elevation of the lowered leveling frame is adjusted, and then bed leveling operations such as stone throwing and scraping are carried out; since the scraper moves along the leveling frame, the elevation accuracy of the leveling frame will directly affect the bed leveling accuracy. With the increasingly stringent requirements for project quality, the higher the requirements for bed leveling accuracy, it is necessary to further study the method for adjusting the elevation of the leveling frame of the bottom-sitting leveling ship. Summary of the Invention

[0004] Aiming at the deficiencies in the related technologies, the present invention provides a method for adjusting the elevation of a leveling frame of a bottom-sitting leveling ship, aiming to improve the elevation accuracy of the leveling frame and further improve the bed leveling accuracy.

[0005] The present invention provides a method for adjusting the elevation of a leveling frame of a bottom-sitting leveling ship, including the following steps:

[0006] S1. Install a first support component and a second support component respectively at the bottom of two opposite side frames of the leveling frame; the first support component 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 second support component includes multiple hydraulic legs arranged along the length direction of the side frame;

[0007] S2. After the leveling ship reaches the construction position, lower the leveling frame so that the cushion beam supports on the leveled bed and the multiple hydraulic legs support on the compacted bed to be leveled; adjust the working strokes of each jacking cylinder and hydraulic leg to initially make the elevations of the four corners of the leveling frame meet the preset elevation requirements;

[0008] S3. Start the integral platform vehicle and make it travel from one end of the leveling frame to the other end to eliminate the instantaneous settlement of the cushion beam and the hydraulic legs.

[0009] S4. Check whether the elevations at the four corners of the leveling frame meet the preset elevation requirements at this time.

[0010] If not, adjust the working strokes of each jacking cylinder and the hydraulic legs so that the elevations at the four corners of the leveling frame meet the preset elevation requirements, and then execute steps S3 - S4 again.

[0011] If so, complete the elevation adjustment of the leveling frame.

[0012] In some embodiments, in step S1, the number of jacking cylinders is five, with two jacking cylinders arranged at each end of the cushion beam in the length direction and one jacking cylinder arranged in the middle of the cushion beam in the length direction; the number of hydraulic legs is two, and the two hydraulic legs are respectively located at both ends of the cushion beam in the length direction.

[0013] In steps S2 and S4, when adjusting the elevations at the four corners of the leveling frame, first adjust the working strokes of the four jacking cylinders at both ends of the cushion beam and the working strokes of the two hydraulic legs to make the elevations at the four corners of the leveling frame meet the preset elevation requirements; then adjust the working stroke of the jacking cylinder in the middle of the cushion beam so that the working stroke of this jacking cylinder is greater than the working strokes of the jacking cylinders at both ends of the cushion beam, but the difference in the working strokes does not exceed the elastic deformation amount of the middle of the cushion beam relative to both ends of the cushion beam.

[0014] In some embodiments, in step S1, a measuring tower is installed at each of the four corners of the leveling frame, and a positioning device is provided at the top of the measuring tower. The positioning device is a GPS + prism integrated machine; in the dock, the relative position relationship between the four positioning devices and the four corners of the leveling frame is calibrated by using a total station; in step S2, after the leveling frame is lowered, the positioning devices at the tops of the measuring towers are all exposed outside the water surface; in steps S2 and S4, the elevation measurement data of the four positioning devices are used, and combined with the relative position relationship between the four positioning devices and the four corners of the leveling frame, the elevations at the four corners of the leveling frame are obtained.

[0015] In some embodiments, wing beams protrude from both sides of the cushion beam in the width direction at the lower part. 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.

[0016] In some embodiments, the jacking cylinder includes a cylinder sleeve and a plunger arranged coaxially; the bottom end of the cylinder sleeve is connected to the cushion beam, and the top end is inserted with the plunger; the plunger includes a plunger head and a rod connected to each other. The plunger head is slidably connected in the cylinder sleeve and is in dynamic seal connection with the inner wall of the cylinder sleeve. The rod penetrates the cylinder sleeve in a sealed manner, and the plunger can reciprocate axially along the cylinder sleeve.

[0017] In some of these embodiments, on both sides in the width direction of the cushion beam top, there are respectively provided a plurality of first limiting blocks and a plurality of second limiting blocks that are turned upwards. The bottom of the side frame corresponding to the cushion beam is clamped between the first limiting blocks and the second limiting blocks; on the length direction of the bottom of the side frame corresponding to the cushion beam, there are provided two sets of oppositely arranged stop blocks, and both ends in the length direction of the cushion beam are clamped between the two sets of stop blocks.

[0018] In some of these embodiments, in step S1, the first support assembly further includes a plurality of pulling cylinders 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;

[0019] In step S2, when the cushion beam has not been supported on the leveled foundation bed, the jacking cylinder contracts into the cushion beam, and the pulling cylinder contracts to a preset minimum stroke so that the cushion beam is pressed against the leveling frame; after the cushion beam is supported on the leveled foundation bed, the pulling cylinder is depressurized, and the jacking cylinder extends to jack up the leveling frame.

[0020] In some of these embodiments, a plurality of cushion blocks protrude from the top surface of the cushion beam; when the pulling cylinder contracts to the preset minimum stroke, the cushion blocks are pressed against the bottom surface of the leveling frame.

[0021] In some of these embodiments, the pulling cylinder includes a coaxial cylinder barrel and a piston rod; one end of the cylinder barrel is hinged inside the cushion beam, and the other end is inserted with the piston rod; the piston rod includes a piston head and a connecting rod connected to each other. The piston rod is slidably connected inside the cylinder barrel and is in dynamic seal connection with the inner wall of the cylinder barrel. The connecting rod penetrates through the cylinder barrel in a sealed manner and is hinged to the leveling frame, and the piston rod can reciprocate along the axial direction of the cylinder barrel.

[0022] In some of these embodiments, the number of pulling cylinders is two, and the two pulling cylinders are respectively located on both sides of the jacking cylinder in the middle of the cushion beam.

[0023] Based on the above technical solutions, in the method for adjusting the elevation of the leveling frame of the bottom-supported leveling ship in the embodiments of the present invention, through the specific setting of the support assembly at the bottom of the leveling frame and the specific means of scraping the leveling trolley empty to eliminate instantaneous settlement and checking and adjusting the elevation of the leveling frame, the elevation accuracy of the leveling frame is improved, and further the foundation bed leveling accuracy can be improved, which is beneficial to meeting the increasingly stringent requirements for the foundation bed leveling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 is a flowchart of the method for adjusting the elevation of the leveling frame of the bottom-supported leveling ship of the present invention;

[0026] Figure 2 This is the front view of the leveling frame before it is lowered in the present invention;

[0027] Figure 3 This is the top view of the leveling frame before it is lowered in the present invention;

[0028] Figure 4 This is the front view of the leveling frame after it lands in the present invention;

[0029] Figure 5 It is Figure 4 the A-A sectional view of

[0030] Figure 6 This is a schematic diagram of the leveling frame equipped with the first support assembly and the second support assembly in the present invention;

[0031] Figure 7 This is the bottom view of the leveling frame equipped with the first support assembly and the second support assembly in the present invention;

[0032] Figure 8 This is the overall schematic diagram of the first support assembly in the present invention;

[0033] Figure 9 This is the sectional view at the jacking oil cylinder in the present invention;

[0034] Figure 10 This is the sectional view at the pulling and closing oil cylinder in the present invention;

[0035] 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, jacking oil cylinder; 31, cylinder sleeve; 32, plunger; 40, pulling and closing oil cylinder; 41, cylinder barrel; 42, piston rod; 43, connecting seat; 50, hydraulic leg; 60, leveling trolley; 61, bunker; 62, scraper; 70, leveling ship; 80, measuring tower. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments will be clearly and completely described 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is 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.

[0038] 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.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "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 a direct connection or an indirect connection through an intermediate medium, and it 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.

[0040] Reference Figures 1 - 10 As shown, the present invention provides a method for adjusting the elevation of the leveling frame of a bottom-sitting leveling ship, which is used to adjust the elevation of the leveling frame 10; the method for adjusting the elevation of the leveling frame of the bottom-sitting leveling ship includes the following steps:

[0041] S1. Install the first support assembly and the second support assembly at the bottom of two relatively arranged side frames 11 of the leveling frame 10 respectively; the first support assembly 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 top surface of the cushion beam 20 is arranged opposite to the bottom surface of the side frame 11. The plurality of jacking cylinders 30 are arranged at intervals along the length direction of the cushion beam 20. Specifically, the bottom end of the jacking cylinder 30 is connected to the cushion beam 20, and the top end of the jacking cylinder 30 can move up and down relative to the cushion beam 20 to extend out of or retract into the cushion beam 20, so that the height of the first support assembly is adjustable; the second support assembly includes a plurality of hydraulic legs 50 arranged along the length direction of the side frame 11, and the hydraulic legs 50 can be telescopically extended and retracted, so that the height of the second support assembly is also adjustable; therefore, the plurality of jacking cylinders 30 and the plurality of hydraulic legs 50 jointly provide a liftable support for the leveling frame 10.

[0042] S2. After the leveling barge 70 reaches the construction position, lower the leveling frame 10 so that the length direction of the two side frames 11 is consistent with the width direction of the foundation bed, support the cushion beam 20 on the leveled foundation bed, and support the multiple hydraulic legs 50 on the compacted foundation bed to be leveled, thereby achieving the bottom sitting of the leveling frame 10; further, the measurement and control system on the bottom-sitting leveling barge 70 is communicatively connected to both the lifting cylinders 30 and the hydraulic legs 50, and the working strokes of the respective lifting cylinders 30 and hydraulic legs 50 are remotely adjusted to initially level the leveling frame 10 and make the elevations at the four corners of the leveling frame 10 meet the preset elevation requirements.

[0043] S3. Start the leveling trolley 60 and let it travel from one end of the leveling frame 10 to the other end, that is, let the leveling trolley 60 scrape once empty; the leveling trolley 60 is relatively heavy, about 100 t, and can eliminate the instantaneous settlement of the cushion beam 20 and the hydraulic legs 50.

[0044] S4. Check whether the elevations at the four corners of the leveling frame 10 meet the preset elevation requirements at this time; if the elevations at the four corners of the leveling frame 10 do not meet the preset elevation requirements, adjust the working strokes of the respective lifting cylinders 30 and hydraulic legs 50 to make the elevations at the four corners of the leveling frame 10 meet the preset elevation requirements, start the leveling trolley 60 to scrape once empty again and check the elevations at the four corners of the leveling frame 10 again, that is, execute steps S3 - S4 again; if the elevations at the four corners of the leveling frame 10 meet the preset elevation requirements, the elevation adjustment of the leveling frame 10 is completed.

[0045] It can be understood that after the elevation of the leveling frame 10 is adjusted in place, the stones in the hopper 61 are thrown onto the foundation bed to be leveled, and then the leveling trolley 60 drives the scraper 62 to move along the leveling frame 10 to level the area where the stones have been thrown, thereby realizing the foundation bed leveling operation.

[0046] In the above-mentioned exemplary embodiment, through the setting of the cushion beam 20, compared with the multi-leg and multi-point support method adopted on both sides of the leveling frame 10 in the prior art, the contact area between the first support component and the leveled foundation bed is significantly increased, and the load of the first support component on the leveled foundation bed is greatly reduced. Therefore, the settlement amount of the first support component and the leveled foundation bed it presses is significantly reduced and the settlement is made uniform, which is beneficial to ensuring that the top elevation and leveling accuracy of the leveled foundation bed are not affected by the subsequent leveling operation of the foundation bed and still meet the engineering quality requirements; on this basis, by adopting technical means such as using the leveling trolley 60 to scrape empty to eliminate instantaneous settlement and checking and adjusting the elevations at the four corners of the leveling frame 10, the elevation adjustment accuracy and state stability of the leveling frame 10 are significantly improved, the elevation accuracy of the leveling frame 10 during the foundation bed leveling operation is improved, and further the foundation bed leveling accuracy can be improved.

[0047] Reference Figures 4 - 6 、 Figure 8 、 Figure 9As shown, in some embodiments, in step S1, the number of the jacking cylinders 30 is five. Two jacking cylinders 30 are arranged at each of the two ends in the length direction of the cushion beam 20, 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 the two ends in the length direction of the cushion beam 20.

[0048] In step S2 and step S4, when adjusting the elevations of the four corners of the leveling frame 10, first adjust the working strokes of the four jacking cylinders 30 at the two ends of the cushion beam 20 and the working strokes of the two hydraulic legs 50 to make the elevations of the four corners of the leveling frame 10 meet the preset elevation requirements; then adjust the working stroke of the jacking cylinder 30 in the middle of the cushion beam 20 to make the working stroke of this jacking cylinder 30 greater than the working strokes of the jacking cylinders 30 at the two ends of the cushion beam 20, but the difference in the working strokes does not exceed the elastic deformation amount of the middle of the cushion beam 20 relative to the two ends of the cushion beam 20. This elastic deformation amount can be obtained through theoretical calculation or experimental measurement, thereby avoiding the problem of insufficient jacking force of the middle jacking cylinder 30 caused by the elastic deformation of the cushion beam 20, ensuring the overall stress area of the cushion beam 20, and further reducing the deformation of the leveling frame 10 and improving the elevation accuracy of the leveling frame 10.

[0049] Reference Figures 2 - 4 As shown, in some embodiments, in step S1, a measuring tower 80 is respectively installed at the four corners of the leveling frame 10, and a positioning device is provided at the top of the measuring tower 80. The positioning device is a GPS + prism integrated machine; it should be noted that the GPS + prism integrated machine includes a coaxial GPS device and a 360° prism, which can meet the requirements of both GPS and total station measurement and positioning methods in practical applications.

[0050] Further, in the dock, use a total station to calibrate the relative position relationship between the four positioning devices and the four corners of the leveling frame 10. Specifically, in the dock, raise the hull of the leveling ship 70 and 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 ship 70 is performing bed leveling operations, 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 the four corners of the top surface of the leveling frame 10, and use the total station to observe the prisms in the GPS + prism integrated machine at the top of the measuring tower 80 and the prisms at the four corners of the leveling frame 10 at one station, thereby obtaining the relative position relationship between the GPS + prism integrated machines at the tops of the four measuring towers 80 and the four corners of the leveling frame 10, and completing the calibration of the relative position relationship between the four positioning devices and the four corners of the leveling frame 10; the calibration work is carried out between 4 am and 6 am. During this period, the land environmental temperature is relatively stable and close to the underwater environmental temperature during bed leveling operations, thereby making the calibration work more accurate.

[0051] In step S2, after the leveling frame 10 is lowered, the positioning devices at the top of the survey tower 80 are all exposed above the water surface. In steps S2 and S4, by using the elevation measurement data of the four positioning devices and combining the relative position relationship between the four positioning devices and the four corners of the leveling frame 10, the elevations of the four corners of the leveling frame 10 are obtained. Further explanation: the elevation measurement data of the positioning devices can be obtained according to the GPS positioning coordinate data in the positioning devices, or a total station can be set up on the shore base, and the elevation measurement data of the positioning devices can be obtained by observing the prism in the positioning devices with the total station. It is also possible to measure both at the same time for verification.

[0052] In the above-mentioned exemplary embodiment, by installing the survey tower 80 and the positioning devices on its top at the four corners of the leveling frame 10, the leveling frame 10 can be measured and positioned more accurately, thereby improving the elevation accuracy of the leveling frame 10.

[0053] Reference Figure 6 、 Figure 8 As shown in the figure, 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. Through the setting of the wing beam 21 in this exemplary embodiment, the overall structural strength of the cushion beam 20 is enhanced, and the contact area between the cushion beam 20 and the already leveled bed is increased. Further, the load of the cushion beam 20 on the already leveled bed is reduced, and the settlement amount of the cushion beam 20 is further reduced, that is, the settlement amount of the already leveled bed in contact with the cushion beam 20 is reduced, better ensuring that the top surface elevation and leveling accuracy of the already leveled bed meet the engineering quality requirements, and also minimizing the subsequent settlement amount of the cushion beam 20 during the bed leveling operation to further improve the elevation accuracy and state stability of the leveling frame 10 during the bed leveling operation, thereby improving the bed leveling accuracy.

[0054] Reference Figure 8 、 Figure 9 As shown in the figure, in some embodiments, the jacking oil 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 plug rod connected to each other. The plunger head is slidably connected inside the cylinder sleeve 31 and is in dynamic seal connection with the inner wall of the cylinder sleeve 31. The plug rod penetrates through the cylinder sleeve 31 in a sealed manner, and the plunger 32 can reciprocate axially along the cylinder sleeve 31. This exemplary embodiment details the structural setting of the jacking oil cylinder 30 and realizes the height adjustability of the first support component.

[0055] Reference Figures 7 - 9As shown, in some embodiments, on both sides of the top width direction 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 blocks 22 and the second limiting blocks 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, and both ends of the cushion beam 20 in the length direction are clamped between the two sets of stoppers 12. In this exemplary embodiment, through the arrangement of the first limiting blocks 22, the second limiting blocks 23 and the stoppers 12, the matching limit between the cushion beam 20 and the leveling frame 10 is achieved, avoiding the relative crosstalk between the two. In addition, during the process of bed leveling operation, in case the leveling frame 10 deflects due to reasons such as large local resistance during the scraping and leveling by the scraper 62, the first limiting blocks 22 and the second limiting blocks 23 on the cushion beam 20 can play a role in preventing the leveling frame 10 from rotating, avoiding the situation that the leveling frame 10 may deflect and affect the quality of the bed leveling operation, ensuring the state stability of the leveling frame 10 during the bed leveling operation process, and being beneficial to improving the quality of bed leveling.

[0056] Reference Figure 8 、 Figure 10 As shown, in some embodiments, in step S1, the first support assembly further includes a plurality of pulling cylinders 40 buried 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 jacking 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 jacking cylinder 30 in the middle of the cushion beam 20. Thus, through the arrangement of the pulling cylinders 40, the connection between the first support assembly and the leveling frame 10 is achieved. The top of the hydraulic leg 50 is connected to the leveling frame 10, achieving the connection between the second support assembly and the leveling frame 10.

[0057] In step S2, when the leveling frame 10 moves along with the leveling ship 70 or when the cushion beam 20 has not yet been supported on the leveled foundation bed, the lifting cylinder 30 contracts into the cushion beam 20, that is, the top surface of the lifting cylinder 30 does not contact the leveling frame 10, and the pulling cylinder 40 contracts to a preset minimum stroke so that the cushion beam 20 is pressed against the leveling frame 10; thereby 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 cylinder 40 is depressurized, and the lifting cylinder 30 extends to lift the leveling frame 10; and when the lifting cylinder 30 extends, the pulling cylinder 40 will extend accordingly; to ensure the safe and reliable performance of the pulling cylinder 40, it is necessary to ensure that when the lifting cylinder 30 extends to the preset maximum lifting stroke, the pulling cylinder 40 does not extend to the preset maximum stroke. The measurement and control system on the submersible leveling ship 70 is also communicatively connected to the pulling cylinder 40 to remotely control the contraction or depressurization of the pulling cylinder 40.

[0058] In some embodiments, a plurality of cushion blocks (not shown) protrude from the top surface of the cushion beam 20; when the pulling cylinder 40 contracts to the preset minimum stroke, the cushion blocks are pressed against the bottom surface of the leveling frame 10, thereby pulling the cushion beam 20 and the leveling frame 10 together; it should be noted that the preset minimum stroke of the pulling cylinder 40 is greater than zero. This illustrative embodiment avoids the possibility that the pulling cylinder 40 is over-contracted and locked or damaged by force during misoperation through the setting of the cushion blocks.

[0059] Reference Figure 8 、 Figure 10 As shown in [references not provided], in some embodiments, the pulling cylinder 40 includes a coaxial cylinder barrel 41 and a piston rod 42; 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 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 penetrates the cylinder barrel 41 in a sealed manner 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. This illustrative embodiment details the structural setting of the pulling cylinder 40 and realizes the pullable connection between the cushion beam 20 and the leveling frame 10.

[0060] In summary, for the elevation adjustment method of the leveling frame of the bottom-supported leveling ship of the present invention, through the setting of the cushion beam 20, the settlement amount of the first support assembly and the leveled foundation bed pressed by it is significantly reduced and the settlement is made uniform; through the setting of the jacking oil cylinder 30 and the hydraulic support leg 50, it is convenient to adjust the elevation of the leveling frame 10; by adopting technical means such as the empty scraping of the leveling trolley 60 to eliminate instantaneous settlement and the calibration adjustment of the elevations of the four corners of the leveling frame 10, the elevation adjustment accuracy and state stability of the leveling frame 10 are significantly improved, the elevation accuracy of the leveling frame 10 during the foundation bed leveling operation is improved, and further the foundation bed leveling accuracy can be improved, which is beneficial to meeting the increasingly stringent requirements for the foundation bed leveling accuracy.

[0061] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. For the same and similar parts among the various embodiments, reference may be made to each other.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention and not 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: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features 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. A method for adjusting the elevation of a leveling frame of a bottom-seated leveling vessel, characterized in that: The following steps are involved: and a plurality of hydraulic support legs arranged along the length direction of the side frame; the plurality of hydraulic support legs and the plurality of hydraulic support legs jointly support the leveling frame in a liftable manner; wing beams are protruding from both sides in the width direction of the lower portion of the pad beam, the bottom surface of the wing beam is coplanar with the bottom surface of the pad beam, and the top surface of the wing beam is inclined upward toward the pad beam; a plurality of first limit blocks and a plurality of second limit blocks are respectively provided on both sides in the width direction of the top of the pad beam, and the bottom of the side frame corresponding to the pad beam is clamped between the first limit block and the second limit block; two sets of stop blocks are protruding from the length direction of the bottom of the side frame corresponding to the pad beam, and the two ends of the pad beam in the length direction are clamped between the two sets of stop blocks; S2. After the leveling vessel arrives at the construction location, the leveling frame is lowered so that the cushion beam is supported on the leveled base bed and the multiple hydraulic legs are supported on the compacted base bed to be leveled; the working strokes of the jacking cylinders and hydraulic legs are adjusted to initially ensure that the elevations of the four corners of the leveling frame meet the preset elevation requirements; S3, start the leveling platform vehicle and move it from one end of the leveling frame to the other end to eliminate the instantaneous settlement of the cushion beam and the hydraulic support legs; S4, checking whether the elevations of the four corners of the leveling frame meet the preset elevation requirements; If not, adjust the working stroke of each of the jacking cylinders and hydraulic legs so that the elevations of the four corners of the leveling frame meet the preset elevation requirements, and execute steps S3 to S4 again; If so, the elevation adjustment of the leveling frame is completed.

2. The elevation adjustment method of the leveling frame of the bottom-seated leveling ship according to claim 1 is characterized in that: In step S1, the number of the jacking cylinders is five, two of which are arranged at each end of the cushion beam in the longitudinal direction, and one of which is arranged in the middle of the cushion beam in the longitudinal direction; the number of the hydraulic support legs is two, and the two hydraulic support legs are respectively located at the two ends of the cushion beam in the longitudinal direction; In steps S2 and S4, when adjusting the elevation of the four corners of the leveling frame, first adjust the working stroke of the four jacking cylinders at both ends of the pad beam and the working stroke of the two hydraulic legs so that the elevation of the four corners of the leveling frame meets the preset elevation requirements; then adjust the working stroke of the jacking cylinder in the middle of the pad beam so that the working stroke of the jacking cylinder is greater than the working stroke of the jacking cylinders at both ends of the pad beam, but the difference in working stroke does not exceed the elastic deformation of the middle of the pad beam relative to the two ends of the pad beam.

3. The elevation adjustment method of the leveling frame of the bottom-seated leveling ship according to claim 1 is characterized in that: In step S1, a measuring tower is installed at each of the four corners of the leveling frame. A positioning device is provided on the top of the measuring tower, and the positioning device is a GPS+prism all-in-one device. In the dock, a total station is used to calibrate the relative position relationship between the four positioning devices and the four corners of the leveling frame. In step S2, after the leveling frame is lowered, the positioning devices on the top of the measuring tower are exposed above the water surface. In steps S2 and S4, the elevation measurement data of the four positioning devices are used, and combined with the relative position relationship between the four positioning devices and the four corners of the leveling frame, the elevation of the four corners of the leveling frame is obtained.

4. The elevation adjustment method of the leveling frame of the bottom-seated leveling ship according to claim 1 is characterized in that: The lifting cylinder includes a cylinder sleeve and a plunger arranged coaxially; the bottom end of the cylinder sleeve is connected to the pad beam, and the plunger is inserted into the top end; the plunger includes a plunger head and a plunger rod connected to each other, the plunger head is slidably connected in the cylinder sleeve and is dynamically sealed with the inner wall of the cylinder sleeve, the plunger rod seal passes through the cylinder sleeve, and the plunger can move back and forth along the axial direction of the cylinder sleeve.

5. The elevation adjustment method of the leveling frame of the bottom-seated leveling ship according to claim 1 is characterized in that: In step S1, the first support assembly further includes a plurality of tensioning and closing oil cylinders embedded in the top surface of the cushion beam, wherein the bottom and top of the tensioning and closing oil cylinders are connected to the cushion beam and the leveling frame respectively; the top of the hydraulic support leg is connected to the leveling frame; In step S2, 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 so that the cushion beam is 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.

6. The method for adjusting the elevation of the leveling frame of a bottom-seated leveling ship according to claim 5, characterized in that: A plurality of cushion blocks are convexly provided on the top surface of the cushion beam; when the pulling and closing oil cylinder is retracted to a preset minimum stroke, the cushion blocks are pressed against the bottom surface of the leveling frame.

7. The method for adjusting the elevation of the leveling frame of a bottom-seated leveling vessel according to claim 5, characterized in that: The pulling and closing cylinder includes a coaxially arranged cylinder barrel and a piston rod; one end of the cylinder barrel is hinged in the cushion beam, and the other end is inserted with the piston rod; the piston rod includes a piston head and a connecting rod connected to each other, the piston rod is slidably connected in the cylinder barrel and is dynamically sealed with the inner wall of the cylinder barrel, the connecting rod seal passes through the cylinder barrel and is hinged on the leveling frame, and the piston rod can move back and forth along the axial direction of the cylinder barrel.

8. The method for adjusting the elevation of the leveling frame of a bottom-seated leveling vessel according to claim 5, characterized in that: There are two pulling and closing oil cylinders, which are respectively located on both sides of the jacking oil cylinder in the middle of the cushion beam.

Images