Ultra-wide foundation bed leveling operation method based on frame type leveling machine

Abstract

The invention belongs to the technical field of foundation bed leveling construction, and relates to an ultra-wide foundation bed leveling operation method based on a frame type leveling machine, which comprises the following steps: a leveling ship reaches a first ship position at one end in the width direction of a foundation bed, a leveling frame is lowered to an elevation position, and a leveling platform truck ripraps stones in stages and drives a scraper to move from the front end to the rear end of the frame; leveling of the foundation bed at the ship position is completed; the leveling frame is lifted, the leveling ship moves to the next ship position along the width of the foundation bed, and a preset width lap joint area is formed between the leveling range of the ship position and the leveled foundation bed of the previous ship position; lowering the frame above the elevation, and returning the whole platform truck to the front end from the rear end of the frame; the leveling frame is lowered to the elevation position, the leveling trolley ripraps stones in stages and drives the scraper to move from the front end to the rear end of the frame, and leveling of the foundation bed of the current ship position is completed; and the leveling frame is lifted again, the leveling ship is moved to the next ship position along the width direction of the foundation bed, and the steps are repeated until the leveling operation in the width direction of the foundation bed is completed. The problem of leveling operation of the ultra-wide foundation bed is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bed leveling construction, and particularly relates to an ultra-wide bed leveling operation method based on a frame-type leveling machine. Background Art

[0002] Currently, when performing underwater bed leveling operations, many use bottom-sitting leveling vessels for bed leveling. The bottom-sitting leveling vessel uses a frame-type leveling machine, which is located in the open space in the middle of the hull of the leveling vessel; the leveling machine mainly consists of a mouth-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. A support device is installed at the bottom of the leveling frame; 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 vessel is performing bed leveling operations, first lower the leveling frame to a preset position and elevation, then throw 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, bed leveling usually adopts full-width leveling, that is, the span range of the leveling frame can cover the width of the bed. After the bed leveling operation at the current ship position is completed, the leveling vessel moves along the length direction of the bed to the next ship position and continues the bed leveling operation at the next ship position. However, for some special engineering projects, the bed is required to have a large width, far exceeding the maximum span range of the existing leveling frame. If a leveling frame with a larger span is designed, on the one hand, it is necessary to expand and transform the leveling vessel, which is extremely costly. On the other hand, the manufacturing difficulty of a larger-span leveling frame is relatively high, and it is prone to large deformations. Moreover, it is very difficult to ensure the structural stability and reliability of the larger-span leveling frame during the operation of the leveling trolleys, which affects the elevation accuracy of the leveling frame and further affects the elevation control during the walking of the scrapers, making it difficult to ensure the bed leveling accuracy.

[0004] In view of this, how to better achieve ultra-wide bed leveling operations has become an urgent technical problem in the industry. Summary of the Invention

[0005] Aiming at the deficiencies in the related technologies, the present invention provides an ultra-wide bed leveling operation method based on a frame-type leveling machine to solve the technical problems mentioned in the background art.

[0006] The present invention provides an ultra-wide bed leveling operation method based on a frame-type leveling machine, including the following steps: S1. The leveling vessel arrives at the first ship position at one end of the bed to be leveled in the width direction of the bed length section, lowers the leveling frame and makes its elevation meet the preset elevation requirements. The leveling trolleys throw stones in stages and drive the scrapers to move from the front end to the rear end of the leveling frame in stages to level the area where the stones have been thrown, completing the bed leveling operation at the first ship position; S2. Lift the leveling frame, move the leveling barge along the width direction of the bed to the next barge position, and form a lap zone with a preset width between the levelable range corresponding to this barge position and the bed that has been leveled in the previous barge position. S3. Lower the leveling frame and make its elevation higher than the preset elevation requirement by a preset height. The leveling trolley returns from the rear end to the front end of the leveling frame. S4. Lower the leveling frame and make its elevation meet the preset elevation requirement. The leveling trolley throws stones in stages and drives the scraper to move from the front end to the rear end of the leveling frame in stages to scrape the area where stones have been thrown, completing the bed leveling operation under the current barge position. S5. Repeat steps S2 - S4 until the leveling operation of the current length section of the bed in the width direction is completed. S6. Lift the leveling frame, move the leveling barge along the length direction of the bed to the next length section to be leveled of the bed, and execute steps S1 - S5 again until the leveling operation of the extra-wide bed with a preset length is completed.

[0007] In some embodiments, in step S3, when the leveling trolley moves towards the front end of the leveling frame, when the leveling trolley moves to a preset distance from the lap zone, raise the leveling frame, and then the leveling trolley continues to move to the front end of the leveling frame.

[0008] In some embodiments, height-adjustable first support assemblies and second support assemblies are respectively installed at the bottom parts of two side frames on the leveling frame that are parallel to the width direction of the bed; the first support assembly supports on the bed that has been leveled in the length direction of the bed; the second support assembly supports on the bed that has been tamped and awaits leveling in the length direction of the bed.

[0009] In some embodiments, the first support assembly includes a cushion beam extending along the length direction of the side frame and a plurality of jacking cylinders buried in the top surface of the cushion beam, and the cushion beam supports on the bed that has been leveled; the second support assembly includes a plurality of hydraulic legs arranged along the length direction of the side frame, and the plurality of hydraulic legs support on the bed that has been tamped and awaits leveling; the elevation of the leveling frame is adjusted by adjusting the working strokes of each jacking cylinder and hydraulic leg.

[0010] In some embodiments, the first support assembly further includes a plurality of pulling cylinders buried in the top surface of the cushion beam, the bottom and 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 yet supported on the bed that has been leveled or the leveling barge is displaced, 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 bed that has been leveled, the pulling cylinder is depressurized, and the jacking cylinder extends to jack up the leveling frame.

[0011] In some of these embodiments, in step S2, the preset width of the overlapping area is 4 m.

[0012] In some of these embodiments, in step S3, the elevation after the leveling frame is lowered is 10 cm higher than the required preset elevation.

[0013] In some of these embodiments, in step S3, when the leveling trolley moves to at least 1 m away from the overlapping area, the leveling frame is raised.

[0014] Based on the above technical solutions, the method for ultra-wide bed leveling operation based on a frame-type leveling machine in the embodiments of the present invention can solve the current problems in ultra-wide bed leveling operation, and avoid problems such as huge costs for the transformation of the leveling ship, high difficulty in manufacturing the leveling frame, large deformation, and poor elevation accuracy caused by using a leveling frame with a larger span. It can better realize the ultra-wide bed leveling operation and ensure its leveling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 a flowchart of the method for ultra-wide bed leveling operation based on a frame-type leveling machine of the present invention; Figure 2 is a schematic diagram of the overlapping area in step S2 of the present invention; Figure 3 is a schematic diagram of the leveling frame equipped with the first support assembly and the second support assembly of the present invention; Figure 4 is a schematic diagram of the first support assembly in the present invention; Figure 5 is a side view of the leveling frame after it is lowered in the present invention.

[0016] In the figure: 10, leveling frame; 11, side frame; 20, cushion beam; 21, wing beam; 30, lifting oil cylinder; 40, pulling and closing oil cylinder; 50, hydraulic support leg; 60, leveling trolley; 61, silo; 62, scraper; 70, leveling ship. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some 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 protection scope of the present invention.

[0018] 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. These terms are only used 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 should not be construed as a limitation on the present invention.

[0019] The terms "first", "second", etc. are only used for descriptive purposes and should not be construed 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.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" 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 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 circumstances.

[0021] Referring Figures 1-5 as shown, the present invention provides an ultra-wide bed leveling operation method based on a frame-type leveling machine, and the method includes the following steps: S1. The leveling barge 70 arrives at the first barge position at one end of the length section of the bed to be leveled in the width direction of the bed, and this end in the width direction of the bed is called the starting end of the bed width; lower the leveling frame 10 to a preset position and achieve bottom sitting through the supporting device at its bottom, level the leveling frame 10 and make its elevation meet the preset elevation requirement; further, the leveling trolley 60 can travel along the leveling frame 10 once to eliminate the instantaneous settlement of the supporting device at the bottom of the leveling frame 10, and then level the leveling frame 10 again and make its elevation meet the preset elevation requirement; the end of the leveling frame 10 close to the starting end of the bed width is called the front end of the leveling frame 10; The whole platform vehicle 60 is placed at the front end of the leveling frame 10, and the stones in the hopper 61 are thrown onto the subgrade to be leveled. The particle size of the stones is 5 cm to 8 cm, and the volume of the thrown stones meets the requirement of a preset whole leveling stroke. Then, the whole platform vehicle 60 drives the scraper 62 to move along the leveling frame 10 to its rear end for a whole leveling stroke to level the area where the stones have been thrown, completing the subgrade leveling operation under a whole leveling stroke. It can be understood that when scraping, the scraper 62 will scrape the excess stones to the side away from the starting end of the subgrade width; according to this process, the whole platform vehicle 60 throws stones in stages and drives the scraper 62 to move from the front end to the rear end of the leveling frame 10 in stages to scrape the area where the stones have been thrown until the subgrade leveling operation under the first berth is completed; it can be understood that the subgrade range that the whole platform vehicle 60 can pass through when walking from the front end to the rear end of the leveling frame 10 under each berth is the leveling range.

[0022] S2. Lift the leveling frame 10, and the leveling barge 70 moves along the subgrade width direction to the next berth, and a lap zone with a preset width is formed between the leveling range corresponding to this berth and the subgrade that has been leveled under the previous berth; specifically, GPS devices are provided at both the front and rear ends of the leveling barge 70, and the two sets of GPS devices and the ship positioning software (such as the Beidou positioning system) are used to position the leveling barge 70 to ensure that the leveling range of the moved leveling barge 70 forms a lap zone with a preset width with the previous berth. Further explanation, before moving to the next berth, the leveling frame 10 needs to be lifted, and the purpose is to avoid disturbing the leveled subgrade when the leveling frame 10 moves with the leveling barge 70 and affecting the leveling accuracy of the leveled subgrade; further, since the leveling is carried out from the starting end of the subgrade width to the other end, after the last whole leveling stroke under the previous berth, there may be a situation of local accumulation of surplus materials or local insufficiency of the subgrade at the finally leveled subgrade at the side away from the starting end of the subgrade width due to different stone stocks in each hopper 61. Therefore, a lap zone is set so that the lap zone can be leveled again during the subgrade leveling operation of the next berth to solve the problems of possible local accumulation of surplus materials or local insufficiency of the subgrade in the lap zone.

[0023] S3. Lower the leveling frame 10 and make its elevation higher than the preset elevation requirement by a preset height, and the whole platform vehicle 60 returns from the rear end of the leveling frame 10 to the front end, that is, the whole platform vehicle 60 scrapes empty once to eliminate the instantaneous settlement of the bottom support device of the leveling frame 10; further explanation, when the whole platform vehicle 60 scrapes empty during the return journey, the elevation of the leveling frame 10 is higher than the preset elevation, and the purpose is to avoid the situation that the resistance of the scraper 62 during the return journey is too large due to excessive accumulation of surplus materials.

[0024] S4, lower the leveling frame 10 and place it on the bottom, level the leveling frame 10 and make its elevation meet the preset elevation requirement; at the current ship position, the leveling platform vehicle 60 again dumps stones in stages and drives the scraper 62 to move from the front end to the rear end of the leveling frame 10 in stages to scrape the dumped stone area. Specifically, the overlapping area is re-leveled first to eliminate the local accumulation of residual materials or the local incompleteness of the base bed in the overlapping area, and then the base bed leveling of the non-overlapping area within the leveling range of the current ship position is continued until the base bed leveling operation at the current ship position is completed; Furthermore, an underwater camera (not shown) is installed on the side of the scraper 62 facing away from the base bed leveling direction to observe whether the leveled base bed is disturbed during the base bed leveling operation to cause stone uplift; if this happens, the leveling frame 10 is lifted, the leveling platform vehicle 60 returns to the stone uplift, the leveling frame 10 is lowered and its elevation meets the preset elevation requirement, and the stone uplift is re-leveled.

[0025] S5. Repeat steps S2 to S4 until the leveling operation of the current length section of the base bed in the width direction of the base bed is completed; further, the total leveling width of the base bed is greater than the required width of the base bed; after the leveling operation of the base bed is completed by the leveling ship 70 at the last ship position, the remaining material is scraped to the side away from the starting end of the base bed width, thereby solving the problem of remaining material and ensuring that the base bed stone is full.

[0026] S6, lift the leveling frame 10, and move the leveling boat 70 along the length direction of the bed to the next length section of the bed to be leveled, and execute steps S1 to S5 again until the leveling operation of the ultra-wide bed of the preset length is completed.

[0027] The above-mentioned illustrative embodiment realizes the leveling operation of an ultra-wide base bed and better ensures the accuracy of the ultra-wide base bed leveling operation by adopting technical means such as overlapping multiple leveling ship positions in the width direction of the base bed, scraping the leveling platform vehicle 60 to eliminate instantaneous settlement, and re-leveling the overlapping area. It solves the current problem of ultra-wide base bed leveling operation and avoids the use of a larger span of the leveling frame 10, which leads to huge costs for the modification of the leveling ship 70, high difficulty in manufacturing the leveling frame 10, large deformation and poor elevation accuracy.

[0028] refer to Figure 2 As shown, in some embodiments, in step S3, when the leveling platform vehicle 60 moves toward the front end of the leveling frame 10, when the leveling platform vehicle 60 moves to a preset distance from the overlapping area, the leveling frame 10 is raised, and the leveling platform vehicle 60 continues to move to the front end of the leveling frame 10; thereby ensuring that the leveling platform vehicle 60 will not disturb the leveled base bed stones when scraping in the return stroke, and also ensuring that the scraper 62 will not scrape the remaining materials that may be accumulated in the overlapping area onto the previously leveled base bed and cause damage to it.

[0029] refer to Figure 3 ,Figure 5 As shown, in some embodiments, first support components and second support components with adjustable heights are respectively installed at the bottoms of two side frames 11 on the leveling frame 10 that are parallel to the width direction of the foundation bed. The first support components and the second support components are the support devices at the bottom of the leveling frame. The first support components are supported on the leveled foundation bed in the length direction of the foundation bed, and the second support components are supported on the tamped and to-be-leveled foundation bed in the length direction of the foundation bed. That is, the leveling frame 10 is supported in a liftable manner through the first support components and the second support components. Thus, by adjusting the heights of the first support components and the second support components, the leveling of the leveling frame 10 is achieved and its elevation meets the preset elevation requirements.

[0030] Reference Figure 3 、 Figure 4 、 Figure 5 As shown, in some embodiments, the first support component 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. During the leveling operation of the extra-wide foundation bed, the cushion beam 20 is supported on the leveled foundation bed in the length direction of the foundation bed, and the edge of the cushion beam 20 is aligned with the edge of the leveled foundation bed. The second support component includes a plurality of hydraulic legs 50 arranged at intervals along the length direction of the side frame 11. During the leveling operation of the extra-wide foundation bed, the plurality of hydraulic legs 50 are supported on the tamped and to-be-leveled foundation bed in the length direction of the foundation bed. Thus, by adjusting the working strokes of the respective jacking cylinders 30 and the hydraulic legs 50, the leveling of the leveling frame 10 is achieved and its elevation meets the preset elevation requirements.

[0031] It should be noted that in steps S1 and S3, the leveling trolley 60 travels to eliminate the instantaneous settlement of the support device at the bottom of the leveling frame 10, that is, to eliminate the instantaneous settlement of the cushion beam 20 and the hydraulic legs 50. On this basis, the subsequent adjustment of the elevation of the leveling frame 10 is carried out, which can improve the elevation accuracy of the leveling frame 10 during the foundation bed leveling operation, and thus improve the foundation bed leveling accuracy. In addition, compared with the current method of using multiple legs for point support of the leveling frame 10, the setting of the cushion beam 20 in this embodiment significantly increases the contact area between the first support component and the leveled foundation bed, greatly reduces the load of the first support component on the leveled foundation bed, and thus significantly reduces the settlement amount of the first support component, that is, significantly reduces the settlement amount of the leveled foundation bed in contact with the cushion beam 20 and makes its settlement uniform, ensuring that the top surface 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.

[0032] Further explanation: On both sides of the lower part of the cushion beam 20 in the width direction, wing beams 21 protrude. 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 setting 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 operation to further improve the elevation accuracy of the leveling frame 10 during the bed leveling operation, thereby improving the bed leveling accuracy.

[0033] Reference Figure 3 、 Figure 4 As shown, in some embodiments, the first support assembly further includes a plurality of pulling cylinders 40 buried in the top surface of the cushion beam 20, and the plurality of pulling cylinders 40 are arranged at intervals along the length direction 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 bottom of the lifting cylinder 30 is connected to the cushion beam 20, and the top of the lifting cylinder 30 is not fixedly connected to the leveling frame 10; thus, through the setting of the pulling cylinder 40, the connection between the first support assembly and the leveling frame 10 is realized. The top of the hydraulic leg 50 is connected to the leveling frame 10, realizing the connection between the second support assembly and the leveling frame 10.

[0034] Further explanation: When the cushion beam 20 is not yet supported on the leveled bed or the leveling ship 70 is displaced, 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 the preset minimum stroke so that the top surface of the cushion beam 20 is pressed against the bottom surface of 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 bed, the pulling cylinder 40 is depressurized, and the lifting cylinder 30 extends to lift the leveling frame 10; 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.

[0035] Reference Figure 2 As shown, in some embodiments, in step S2, the preset width of the overlapping area is 4m to simultaneously take into account the requirements of the bed leveling quality and the bed leveling construction efficiency at the connection of the front and rear ship positions in the width direction of the bed.

[0036] In some embodiments, in step S3, the elevation of the leveling frame 10 after being lowered is 10 cm higher than the preset elevation requirement; while ensuring the smooth empty scraping return journey of the leveling trolley 60, it can better eliminate the instantaneous settlement of the bottom support device of the leveling frame 10. In some embodiments, in step S3, when the leveling trolley 60 moves towards the front end of the leveling frame 10, the empty scraping displacement is calculated in advance. When the leveling trolley 60 moves to at least 1 m away from the overlapping area, the leveling frame 10 is lifted; thereby further ensuring that the empty scraping during the return journey of the leveling trolley 60 will not affect the already leveled bed and its leveling accuracy.

[0037] In summary, the ultra-wide bed leveling operation method based on the frame-type leveling machine of the present invention can solve the current problems in ultra-wide bed leveling operations, avoid problems such as huge costs for the transformation of the leveling ship 70, high manufacturing difficulty, large deformation, and poor elevation accuracy caused by using a leveling frame 10 with a larger span, and can better achieve ultra-wide bed leveling operations and ensure its leveling accuracy.

[0038] 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 or similar parts between the various embodiments, reference can be made to each other.

[0039] 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 leveling an ultra-wide bed based on a frame-type leveling machine, characterized in that: The following steps are involved: S1, the leveling ship arrives at the first ship position where the length of the bed to be leveled is at one end in the width direction of the bed, and the leveling frame is lowered to make its elevation meet the preset elevation requirement, and the leveling platform vehicle dumps stones in stages and drives the scraper to move from the front end to the rear end of the leveling frame in stages to scrape the dumped stone area, completing the bed leveling operation under the first ship position; S2, lifting the leveling frame, the leveling ship moves to the next ship position along the width direction of the bed, and forms an overlap area of ​​a preset width between the leveling range corresponding to the ship position and the leveled bed under the previous ship position; S3, lowering the leveling frame and making its elevation higher than the preset elevation requirement by a preset height, and the leveling platform vehicle returns from the rear end of the leveling frame to the front end; S4, lowering the leveling frame and making its elevation meet the preset elevation requirement, the leveling platform vehicle dumps stones in stages, and drives the scraper to move from the front end to the rear end of the leveling frame in stages to scrape the dumped stone area, completing the bed leveling operation under the current ship position; S5, repeating steps S2 to S4 until the leveling operation of the current length section of the base bed in the width direction of the base bed is completed; S6, lift the leveling frame, move the leveling boat along the length direction of the bed to the next length section of the bed to be leveled, and execute steps S1 to S5 again until the leveling operation of the ultra-wide bed of the preset length is completed.

2. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 1 is characterized in that: In step S3, when the leveling platform vehicle moves toward the front end of the leveling frame, when the leveling platform vehicle moves to a preset distance from the overlapping area, the leveling frame is raised, and the leveling platform vehicle continues to move to the front end of the leveling frame.

3. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 1 or 2, characterized in that: The bottom of the two side frames on the leveling frame parallel to the width direction of the base bed are respectively installed with a first support assembly and a second support assembly with adjustable height; the first support assembly is supported on the leveled base bed in the length direction of the base bed; the second support assembly is supported on the compacted base bed to be leveled in the length direction of the base bed.

4. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 3 is characterized in that: The first supporting assembly 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 cushion beam is supported on a leveled base bed; the second supporting assembly includes a plurality of hydraulic legs arranged along the length direction of the side frame, and the plurality of hydraulic legs are supported on a compacted base bed to be leveled; the elevation of the leveling frame is adjusted by adjusting the working stroke of each of the lifting cylinders and the hydraulic legs.

5. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 4 is characterized in that: The first supporting assembly also includes a plurality of pulling and closing cylinders buried in the top surface of the cushion beam, 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 is not yet supported on the leveled base bed or the leveling ship is shifted, 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.

6. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 1 is characterized in that: In step S2, the preset width of the overlapping area is 4m.

7. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 1 is characterized in that: In step S3, the elevation of the leveling frame after lowering is 10 cm higher than the preset elevation requirement.

8. The ultra-wide bed leveling method based on a frame-type leveling machine according to claim 2 is characterized in that: In step S3, when the leveling platform vehicle moves to at least 1 m away from the overlapping area, the leveling frame is raised.

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