A method for manufacturing and debugging a large-span leveling frame track

Abstract

The present invention belongs to the field of bed leveling construction technology and relates to a method for manufacturing and debugging a large-span leveling frame track, comprising: manufacturing a plurality of track segments, wherein the plurality of track segments are arranged in sequence along a straight line to form a whole track, and a track is respectively provided on the top surfaces of the two opposite sides of the leveling frame; lowering the leveling frame and leveling it; starting a whole platform vehicle to travel along the track from one end of the leveling frame to the other end; using a pressure differential static level to measure the track elevation difference, and determining whether the track elevation difference meets the preset elevation difference requirement; if not, installing a gasket between the corresponding track segment and the leveling frame according to the track elevation difference measurement result, and the whole platform vehicle traveling again, measuring the track elevation difference again and adjusting it until the requirement is met; finally, welding the gasket to the leveling frame and the track to complete the production and debugging of the track. The present invention can reduce the difficulty and deformation of the track production, achieve fine adjustment of the track elevation difference, and thereby improve the track elevation accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of base bed leveling construction, and in particular relates to a method for manufacturing and debugging a large-span leveling frame track. Background Art

[0002] Currently, many underwater bed leveling operations utilize a bottom-mounted leveling vessel. This vessel consists of a hull and a leveling machine system located within an open space in the middle of the hull. The system primarily consists of a U-shaped leveling frame, a leveling platform vehicle connected to the frame, multiple silos on the vehicle, and scrapers at the lower edges of the silos. The frame is equipped with opposing tracks on its top surface, and a support device is installed at its bottom. When performing bed leveling operations, the leveling vessel first lowers the frame to a preset position and elevation, then dumps the stones from the silos onto the bed to be leveled. The leveling platform vehicle then drives the scraper along the track on the leveling frame to level the areas where the stones have been dumped, thereby achieving bed leveling.

[0003] Currently, the track on the leveling frame is made of one piece. Due to the large span of the leveling frame and the long total length of the entire track (nearly 40m), the track itself is difficult to manufacture, and the track deformation caused by temperature changes may exceed the track height difference requirements; moreover, when the heavy whole platform vehicle moves along the track, it will also cause the track to deflect and deform, making the track height difference more difficult to control, affecting the track elevation accuracy, and then affecting the scraper elevation during movement, thereby affecting the base bed leveling accuracy, making it difficult to meet the increasingly stringent base bed fine leveling operations. Summary of the Invention

[0004] In view of the shortcomings existing in the related art, the present invention provides a method for manufacturing and debugging a large-span leveling frame track to solve the technical problems mentioned in the background technology.

[0005] The present invention provides a method for manufacturing and debugging a large-span leveling frame track, which is carried out in a dock and includes the following steps:

[0006] S1. Produce multiple track segments, which can be arranged in sequence along a straight line to form a whole track; set a track on the top surface of two side frames opposite to each other on the leveling frame, and install each track segment on the leveling frame by bolts;

[0007] S2. Install the screed system including the screed frame and screed platform vehicle onto the screed vessel;

[0008] S3. Lower the leveling frame and level it after it has bottomed out.

[0009] S4, start the leveling platform vehicle and make it move along the track from one end of the leveling frame to the other end;

[0010] S5. Use a pressure differential static level to measure the track height difference and determine whether the track height difference meets the preset height difference requirements;

[0011] If not, then at least one layer of shims is installed between the corresponding track segment and the leveling frame according to the measurement result of the track height difference, and steps S4 to S5 are performed again;

[0012] If so, multiple layers of gaskets are welded and fixed, and intermittent welding is performed between the bottom gasket and the leveling frame, and between the top gasket and the track, thereby completing the production and debugging of the track.

[0013] In some embodiments, in step S1 , the length of the track segment does not exceed 1 m.

[0014] In some embodiments, in step S1 , a process gap is reserved between two adjacent track segments of each track.

[0015] In some embodiments, in step S5 , the measurement of the track height difference is performed between 4 am and 6 am.

[0016] In some embodiments, in step S5 , the thickness of the gasket is 1 mm to 10 mm.

[0017] In some embodiments, in step S1, a first support assembly and a second support assembly are respectively installed at the bottom of the two side frames; the first support assembly includes a pad beam extending along the length direction of the side frame and a plurality of lifting cylinders embedded in the top surface of the pad beam; the second support assembly includes a plurality of hydraulic legs arranged along the length direction of the side frame; in step S3, after the leveling frame is seated, the leveling frame is leveled by adjusting the working stroke of each lifting cylinder and the hydraulic legs.

[0018] In some embodiments, the number of jacking cylinders is five, two jacking cylinders are arranged at each end of the mat beam in the length direction, and one jacking cylinder is arranged in the middle of the mat beam in the length direction; the number of hydraulic support legs is two, and the two hydraulic support legs are respectively located at the two ends of the mat beam in the length direction;

[0019] In step S3, when leveling 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 to make the elevations at the four corners of the leveling frame consistent; 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.

[0020] In some embodiments, wing spars are protrudingly provided on both sides of the lower width direction of the cushion beam, 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.

[0021] Based on the above technical solution, the large-span leveling frame track manufacturing and debugging method in the embodiment of the present invention can reduce the difficulty and deformation of track manufacturing, simulate the base bed leveling operation conditions to finely adjust the track height difference, improve the track elevation accuracy, thereby improving the base bed leveling accuracy, and better meet the increasingly stringent base bed fine leveling operation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A flow chart of the method for producing and debugging a large-span leveling frame track according to the present invention;

[0024] Figure 2 It is a side view of the leveling frame after being lowered in the present invention;

[0025] Figure 3 for Figure 2 A magnified view of point A in the figure;

[0026] Figure 4 This is a schematic diagram of using a pressure differential static level to measure track height differences in the present invention;

[0027] Figure 5 Schematic diagram of a leveling frame equipped with a first supporting assembly and a second supporting assembly according to the present invention;

[0028] Figure 6 It is an overall schematic diagram of the first supporting assembly in the present invention.

[0029] In the figure: 10, leveling frame; 11, side frame; 12, track; 13, track segment; 14, gasket; 20, cushion beam; 21, wing beam; 30, jacking cylinder; 50, hydraulic support leg; 60, leveling platform vehicle; 61, silo; 62, scraper; 70, leveling boat; 90, pressure differential static level; 91, liquid storage tank. DETAILED DESCRIPTION

[0030] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "top", "bottom", "inside", "outside", "left", "right", "front", "back", "vertical", "horizontal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 therefore cannot be understood as limiting the present invention.

[0032] The terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] refer to Figures 1-6 As shown, the present invention provides a method for manufacturing and debugging a large-span leveling frame track, which is carried out in a dock and includes the following steps:

[0035] S1. Produce multiple track segments 13. Multiple track segments 13 can be arranged in sequence along a straight line to form an entire track 12, thereby realizing the segmented production of the entire track 12; a track 12 formed by multiple track segments 13 is respectively arranged on the top surfaces of the two side frames 11 opposite to each other on the leveling frame 10, and each track segment 13 is installed on the leveling frame 10 by bolts; further, a countersunk hole is opened on the track segment 13, and the track segment 13 is assembled on the leveling frame 10 by a countersunk bolt, and the top surface of the countersunk bolt does not exceed the top surface of the track segment 13.

[0036] S2. Install the screed system including the screed frame 10 and the screed trolley 60 onto the screed boat 70 . It is understandable that the screed trolley 60 is connected to the screed frame 10 , and the screed trolley 60 can drive the scraper 62 under the hopper 61 to move back and forth along the track 12 .

[0037] S3. Raise the hull of the leveling boat 70, lower the leveling frame 10, and level the leveling frame 10 after it lands on the bottom, so as to simulate the state of the leveling frame 10 when the leveling boat 70 performs the bed leveling operation.

[0038] S4. Start the leveling platform vehicle 60 and move it along the track 12 from one end of the leveling frame 10 to the other end to simulate the situation when the leveling ship 70 is performing the bed leveling operation, that is, the leveling platform vehicle 60 applies pressure to the track 12, causing the track 12 to bend and deform.

[0039] S5. Use a pressure differential static level 90 to measure the height difference of the track 12; specifically, a plurality of monitoring points are set at intervals along the length direction of each track 12 on the top surface of the leveling frame 10, and a pressure differential static level 90 is placed at each monitoring point. A liquid storage tank 91 is provided on the outside of one end of the track 12, and each pressure differential static level 90 is connected to the bottom end of the liquid storage tank 91 through a liquid pipe and to the top end of the liquid storage tank 91 through a ventilation pipe. The height difference of the entire track 12 can be measured by using the pressure differential levels at multiple monitoring points; the measurement accuracy of the pressure differential static level 90 can reach 0.001mm, which can accurately measure the height difference of the track 12.

[0040] Further, it is determined whether the height difference of the track 12 meets the preset height difference requirement;

[0041] If the height difference of the track 12 does not meet the preset height difference requirement, then at least one layer of gaskets 14 is installed between the corresponding track segment 13 and the leveling frame 10 according to the measurement result of the height difference of the track 12. Specifically, the gaskets 14 are sandwiched between the bottom surface of the track segment 13 and the top surface of the leveling frame 10, and the countersunk bolts pass through the track segment 13 and the gaskets 14 in sequence and are connected to the leveling frame 10. After the gaskets 14 are installed, the leveling platform vehicle 60 is started again to travel once, and the height difference of the track 12 is measured again and adjusted, that is, steps S4 to S5 are executed again.

[0042] If the height difference of the track 12 meets the preset height difference requirements, the multiple layers of gaskets 14 are welded together, and intermittent welding is performed between the bottom gasket 14 and the leveling frame 10, and between the top gasket 14 and the track 12, thereby completing the production and commissioning of the track 12. Furthermore, welding deformation should be minimized during the welding process. After welding is completed, the platform trolley 60 can be restarted to move along the track 12 from one end of the leveling frame 10 to the other. The height difference of the track 12 is then inspected using a pressure differential static level 90 to determine the height difference of the track 12, that is, the elevation accuracy of the track 12.

[0043] The above-mentioned schematic embodiment reduces the difficulty of manufacturing and temperature deformation of the track 12 by arranging multiple track segments 13 to form the entire track 12; accurately measures the height difference of the track 12 through the application of the pressure difference static level 90; and greatly reduces the influence of the deflection deformation of the track 12 on the height difference of the track 12 by using the whole platform vehicle 60 to simulate the base bed leveling operation condition and adding gaskets 14 at the bottom of the track segment 13 to adjust the height difference of the track 12, thereby achieving fine adjustment of the height difference of the track 12, and enabling the debugged track 12 to have good elevation accuracy in the actual construction of the underwater base bed leveling operation, thereby ensuring the elevation accuracy of the scraper 62 and effectively improving the base bed leveling accuracy.

[0044] refer to Figure 4 As shown, in some embodiments, in step S1, the length of each track segment 13 does not exceed 1m; compared with the long track 12 in the prior art, this embodiment significantly reduces the difficulty of manufacturing the track 12, and since the track segment 13 is shorter, its deformation caused by temperature changes is also greatly reduced.

[0045] refer to Figure 4 As shown, in some embodiments, in step S1, a process gap is reserved between each adjacent track segment 13 of each track 12. On the one hand, it avoids interference between adjacent track segments 13 due to temperature changes or height difference adjustments of the track 12, and on the other hand, it improves the convenience of installation and maintenance of the track 12.

[0046] In some embodiments, in step S5, the measurement of the height difference of the track 12 is performed between 4:00 and 6:00 in the morning; the land ambient temperature during this period is relatively stable, avoiding high or low temperatures causing thermal expansion and contraction of the track 12 and affecting the measurement results, and the land ambient temperature during this period is similar to the underwater ambient temperature of the track 12 during the base bed leveling operation, thereby making the measurement and debugging of the height difference of the track 12 more accurate.

[0047] refer to Figure 4 As shown, in some embodiments, in step S5 , the thickness of the gasket 14 is 1 mm to 10 mm, so as to perform targeted and fine compensation for the height difference at different track segments 13 and ensure the overall smoothness of the entire track 12 .

[0048] refer to Figure 2 、 Figure 5 、 Figure 6As shown, in some embodiments, in step S1, a first support assembly and a second support assembly are respectively installed at the bottom of the two side frames 11 arranged opposite to each other on the leveling frame 10; the first support assembly includes a pad beam 20 extending along the length direction of the side frame 11, and a plurality of jacking cylinders 30 embedded in the top surface of the pad beam 20, and the plurality of jacking cylinders 30 are arranged at intervals along the length direction of the pad beam 20; the second support assembly includes a plurality of hydraulic legs 50 arranged along the length direction of the side frame 11; the plurality of jacking cylinders 30 and the plurality of hydraulic legs 50 jointly provide liftable support for the leveling frame 10. In some embodiments, the number of jacking cylinders 30 is five, with two jacking cylinders 30 arranged at each end of the length direction of the pad beam 20, and one jacking cylinder 30 arranged in the middle of the length direction of the pad beam 20; the number of hydraulic legs 50 is two, and the two hydraulic legs 50 are respectively located at the two ends of the length direction of the pad beam 20. In step S3, after the leveling frame 10 is seated on the bottom, the working stroke of each jacking cylinder 30 and hydraulic support leg 50 is adjusted to level the leveling frame 10. This exemplary embodiment refines the structural arrangement of the support device for the leveling frame 10 in the bottom-seated leveling vessel 70 to further refine and define the support method for the leveling frame 10 during track 12 height difference measurement and debugging, thereby increasing the accuracy of track 12 height difference measurement and debugging.

[0049] refer to Figure 2 、 Figure 5 、 Figure 6 As shown, in step S3, when leveling the leveling frame 10, first adjust the working strokes of the four jacking cylinders 30 at both ends of the pad 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 consistent; then adjust the working stroke of the jacking cylinder 30 in the middle of the pad beam 20 to make the working stroke of the jacking cylinder 30 greater than the working stroke of the jacking cylinders 30 at both ends of the pad beam 20, but the difference in working strokes does not exceed the elastic deformation of the middle of the pad beam 20 relative to the two ends of the pad beam 20. The elastic deformation can be obtained through theoretical calculation or experimental measurement, thereby avoiding the problem of insufficient lifting force of the middle jacking cylinder 30 due to the elastic deformation of the pad beam 20 and ensuring the overall force-bearing area of ​​the pad beam 20. This illustrative embodiment refines the specific method of leveling the leveling frame 10 and improves the standardization and accuracy of the height difference measurement and debugging of the track 12.

[0050] refer to Figure 6 As shown, in some embodiments, wing spars 21 are protruding from both sides of the lower width of the cushion beam 20. The bottom surface of the wing spars 21 is coplanar with the bottom surface of the cushion beam 20, and the top surface of the wing spars 21 is inclined upward toward the cushion beam 20. The provision of the wing spars 21 significantly increases the structural strength and ground contact area of ​​the cushion beam 20, which may affect the height difference measurement and debugging results of the track 12. This illustrative embodiment refines the structure of the cushion beam 20 to adapt it to the actual situation of the leveling vessel 70 during bed leveling operations, further improving the accuracy of the height difference measurement and debugging of the track 12.

[0051] To further illustrate, taking a bottom-standing leveling ship as an example, the total length of the leveling frame 10 track 12 is 32m. When the whole track 12 scheme in the prior art is adopted, the height difference between the two tracks 12 is 24mm and 42mm respectively; while when the track 12 production and debugging scheme in the present invention is adopted, the height difference between the two tracks 12 is 1.569mm and 1.731mm respectively; it can be seen that the track 12 in the present invention has an elevation accuracy of less than 2mm after the whole platform vehicle 60 has traveled in a full range. Compared with the prior art, the elevation accuracy of the large-span leveling frame track is significantly improved, thereby effectively improving the leveling accuracy of the base bed.

[0052] To sum up, the large-span leveling frame track manufacturing and debugging method of the present invention reduces the difficulty of manufacturing and deformation of the track 12 by manufacturing multiple track segments 13 and arranging them to form a whole track 12; by simulating the base bed leveling operation conditions through the movement of the whole platform vehicle 60 and adjusting the height difference of the track 12 by adding gaskets 14 at the bottom of the track segment 13, fine adjustment of the height difference of the track 12 is achieved, and the debugged track 12 has good elevation accuracy in the actual construction of the underwater base bed leveling operation, thereby effectively improving the base bed leveling accuracy and better meeting the increasingly stringent base bed fine leveling operation requirements.

[0053] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to preferred embodiments, persons of ordinary skill in the art should understand that the specific implementation methods of the present invention may still be modified or some technical features may be replaced by equivalents without departing from the spirit of the technical solutions of the present invention, and all of these should be included in the scope of the technical solutions for which protection is sought.

Claims

1. A method for manufacturing and debugging a large-span leveling frame track, characterized in that: It is carried out in the dock and includes the following steps: S1. Produce multiple track segments, which are arranged in sequence along a straight line to form a whole track; the length of each track segment does not exceed 1 meter; set one track on the top surface of each of the two side frames opposite to each other on the leveling frame, and each track segment is mounted on the leveling frame by bolts; S2. Installing the screed system including the screed frame and the screed platform vehicle onto the screed vessel; S3, lowering the leveling frame, and leveling the leveling frame after it has bottomed out; S4, start the leveling platform vehicle and make it move along the track from one end of the leveling frame to the other end; S5. Setting a plurality of monitoring points along the length of each track at intervals, placing a differential pressure static level at each monitoring point, measuring the track elevation difference using the differential pressure static levels at the plurality of monitoring points, and determining whether the track elevation difference meets a preset elevation difference requirement; If not, then at least one layer of spacers is installed between the corresponding track segment and the leveling frame according to the measurement result of the track height difference, and steps S4 to S5 are performed again; If so, the multiple layers of gaskets are welded and fixed, and intermittent welding is performed between the bottom gasket and the leveling frame, and between the top gasket and the track, thereby completing the production and debugging of the track.

2. The method for manufacturing and debugging a large-span leveling frame track according to claim 1, characterized in that: In step S1 , a process gap is reserved between two adjacent track segments of each track.

3. The method for manufacturing and debugging a large-span leveling frame track according to claim 1, characterized in that: In step S5, the track height difference is measured between 4 am and 6 am.

4. The method for manufacturing and debugging a large-span leveling frame track according to claim 1, characterized in that: In step S5, the thickness of the gasket is 1 mm to 10 mm.

5. The method for manufacturing and debugging a large-span leveling frame track according to any one of claims 1 to 4, characterized in that: In step S1, a first support assembly and a second support assembly are respectively installed at the bottom of the two side frames; the first support assembly includes a pad beam extending along the length direction of the side frame and a plurality of lifting cylinders embedded in the top surface of the pad beam; the second support assembly includes a plurality of hydraulic legs arranged along the length direction of the side frame; in step S3, after the leveling frame is seated, the leveling frame is leveled by adjusting the working stroke of each of the lifting cylinders and the hydraulic legs.

6. The method for manufacturing and debugging a large-span leveling frame track according to claim 5, characterized in that: There are five jacking cylinders, two of which are arranged at each end of the cushion beam in the longitudinal direction, and one jacking cylinder is arranged in the middle of the cushion beam in the longitudinal direction; there are two hydraulic support legs, which are respectively located at the two ends of the cushion beam in the longitudinal direction; In step S3, when leveling 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 to make the elevations at the four corners of the leveling frame consistent; then adjust the working stroke of the jacking cylinder in the middle of the pad beam to make the working stroke of the jacking cylinder 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.

7. The method for manufacturing and debugging a large-span leveling frame track according to claim 5, characterized in that: Wing spars are protrudingly provided on both sides of the lower width direction of the cushion beam, 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.

Images