High-precision construction method of dock arm car track structure

Abstract

The invention belongs to the technical field of construction of floating dock arm car equipment, and discloses a high-precision construction method of a dock arm car track structure. The problem that precision is difficult to guarantee in a conventional construction method of dock arm upper and lower track structures is effectively solved. The method includes: determining the integral construction process of dock arm upper and lower rails; dock arm car track plate blanking sidewise bending control is carried out; assembling and manufacturing a track structure on the dock arm vehicle; assembling and manufacturing a lower track structure of the dock arm vehicle; building the sections to which the dock arm upper and lower rails belong; building a block to which the dock arm vehicle upper and lower rails belong; the block where the dock arm vehicle and the dock arm vehicle belong is folded and built in the dock. According to the construction method, the construction process method for assembling, segmenting, assembling, folding and other stages of the upper and lower rails of the dock arm vehicle is reasonably designed, the precision requirements of all the stages are reasonably decomposed, the construction quality is guaranteed while the construction efficiency is improved, high-precision construction of the upper and lower rail structures of the dock arm vehicle is achieved, and therefore the operation requirements of dock arm vehicle equipment are met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of floating dock arm car equipment construction, and particularly relates to a high-precision construction method for a dock arm car track structure. BACKGROUND

[0002] A dock arm car is a non-standard equipment arranged in the inner side of the dock walls of the left and right sides of a floating dock, and is a core equipment necessary for the daily operation of the floating dock. Figure 1 and Figure 2 As shown in the drawings, the track of the dock arm car is generally connected to the floating dock wall structure by welding, and is generally divided into upper and lower tracks, and the dock arm car runs along the dock wall direction on the upper and lower tracks.

[0003] The upper and lower tracks of the dock arm car are generally long and thin structures with special cross sections, and the upper and lower surfaces and the inner and outer surfaces of the track plate of the upper track are all working surfaces. The upper surface is in contact with the load-bearing wheels of the dock arm car and bears the weight of the dock arm car, and the lower surface and the inner and outer surfaces are in contact with the guide wheels of the dock arm car to ensure that the dock arm car does not derail during operation. The upper track of the dock arm car has high precision requirements, and it is difficult to control the welding deformation during the manufacturing process of the long and thin structure with a special cross section. The main track plate of the lower track is arranged vertically and bears the horizontal pressure of the dock arm car.

[0004] The conventional construction method of the upper and lower track structures of the dock arm car has the following problems: (1) After single-head flame cutting of the long and thin part, the temperature difference between the two sides easily causes lateral bending, which can be corrected by using explosives, but short pieces are easily produced, resulting in uncontrollable precision. (2) The upper and lower track assemblies are generally long and thin structures with special cross sections, which are prone to twisting and deformation during manufacturing, and the conventional construction method cannot guarantee the precision. SUMMARY

[0005] The present application aims to provide a high-precision construction method for a dock arm car track structure, which effectively solves the problem of precision difficulty in the conventional construction method of the upper and lower track structures of the dock arm car.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is: a high-precision construction method of a dock arm vehicle track structure, comprising the following steps: S1, analyzing the working principle of the load bearing wheels and guide wheels of the dock arm vehicle walking mechanism, and the upper and lower track structure forms of the dock arm vehicle; according to the working principle and operation requirements of the dock arm vehicle equipment, analyzing the working principle and working load of each action mechanism of the dock arm vehicle, the load bearing frame, the load bearing wheel set and the guide wheel set, proposing the precision requirements of the final finished state of the upper and lower tracks of the dock arm vehicle, and determining the priority of each precision index; determining the segmentation of the dock wall area structure to which the dock arm vehicle belongs, the assembly division of the segments to which the upper and lower tracks of the dock arm vehicle belong; determining the assembly construction base surface of the upper and lower track assembly of the dock arm vehicle, the segment assembly construction base surface belonging thereto, and the total segment construction base surface belonging to the dock wall area; S2, dock arm vehicle track plate blanking and bending control; S3, upper track structure assembly of the dock arm vehicle; S4, lower track structure assembly of the dock arm vehicle; S5, construction of the segments to which the upper and lower tracks of the dock arm vehicle belong; S6, construction of the total segments to which the upper and lower tracks of the dock arm vehicle belong; S7, in-dock closing construction of the total segments to which the upper and lower tracks of the dock arm vehicle belong.

[0007] Further, in step S2, the following steps are specifically included: S21, according to the length size requirements of the segments to which the upper and lower tracks of the dock arm vehicle belong, and in combination with the market supply specifications of the track plates, the track plate width scheme of the upper and lower tracks of the dock arm vehicle is determined, the track plates are blanked and bent in the range of a single segment length, and no butt joint is arranged in the ship length direction; S22, the track plates are cut and blanked by a multi-head flame cutting machine, and a plurality of track plates are cut at the same time; S23, the track plate width is comprehensively determined by giving priority to guaranteeing the blanking and bending control requirements of the track plates, considering the track plate cutting allowance loss problem, and ensuring that the temperatures on both sides are equivalent during track plate cutting.

[0008] Further, in step S3, the following steps are specifically included: S31, according to the structure characteristics of the upper track assembly of the dock arm vehicle, the assembly process of the upper track assembly of the dock arm vehicle is determined; the track panel with high precision requirements is used as the template, and the track web plate, the support plate, the outer horizontal partition plate, the outer vertical partition plate, the inner vertical partition plate and the inner horizontal rib are sequentially installed to form a complete upper track assembly.

[0009] S32, according to the structure characteristics of the upper track of the dock arm vehicle, in combination with the embedded iron arrangement of the upper track assembly construction site of the dock arm vehicle, the form of the special jig of the upper track assembly of the dock arm vehicle is determined.

[0010] S33, before the track T material panel is placed on the jig, the straightness of the track T material panel is checked, if the straightness has a tolerance, there is a bending condition, then the straightness of the track T material panel is adjusted by mechanical straightening or water and fire straightening according to the bending degree.

[0011] S34, the track T material panel is placed on the bed, the sealing plates arranged on both sides of the track T material panel are welded and sealed with the column channel steel, and are not welded with the track T material panel body; the outer vertical partition plate and the inner vertical partition plate are simultaneously prefabricated.

[0012] S35, install the track T material web to form the track T material, check the perpendicularity between the web and the panel with a square ruler; complete the fillet weld between the track panel and the track web at the inner vertical partition plate, with a welding length of 100 mm for each section; control the perpendicularity of the web to be less than or equal to 1 mm and the straightness of the web to be less than or equal to 2 mm during assembly.

[0013] S36, sequentially install the outer support plate, the outer horizontal partition plate, the outer vertical partition plate, the inner vertical partition plate and the inner horizontal rib to form a complete track assembly on the dock arm vehicle.

[0014] S37, welding is performed in the length direction of the track by using a segmented skip welding method, and symmetric welding is performed on the left and right sides with the track web as a boundary; the remaining inner horizontal rib and the track web are welded at an inclined angle, and the outer horizontal partition plate and the track web are welded at an inclined angle after the track assembly is turned over by 90°.

[0015] S38, after the welding of the track assembly is completed, back burning is performed to release the welding stress of the track assembly on the dock arm vehicle.

[0016] Further, in step S4, the following steps are specifically included: S41, according to the structural characteristics of the lower track assembly of the dock arm vehicle, determine the assembly process of the lower track assembly of the dock arm vehicle; first, the track panel and the track angle steel are butt-jointed with high precision requirements, and then the track web, the outer vertical partition plate and the inner vertical partition plate are installed after the track panel is turned over by 180°.

[0017] S42, according to the structural characteristics of the lower track of the dock arm vehicle, in combination with the embedded iron arrangement of the lower track assembly construction site, determine the form of the special jig frame of the lower track assembly of the dock arm vehicle.

[0018] S43, before the track T material panel is placed on the bed, check the straightness of the track T material panel; if the straightness is out of tolerance and there is a side bending condition, adjust the straightness of the track T material panel by using mechanical straightening or water-fire straightening according to the degree of side bending.

[0019] S44, the track T material panel is placed on the bed, the sealing plate arranged on one side of the track T material panel is welded and sealed with the column channel steel, and is not welded with the track T material panel body; the track angle steel is arranged with a sealing jig plate on one side; the outer vertical partition plate is simultaneously prefabricated.

[0020] S45, install the track T material web to form the track T material, check the perpendicularity between the web and the panel with a square ruler; complete the fillet weld between the track panel and the track web at the outer vertical partition plate, with a welding length of 100 mm for each section; control the perpendicularity of the web to be less than or equal to 1 mm and the straightness of the web to be less than or equal to 2 mm during assembly.

[0021] S46, install the outer vertical partition and the inner vertical partition.

[0022] S47, adopt the sectional jump welding method to perform welding construction in the length direction of the track.

[0023] S48, after the lower track assembly welding is completed, back burning is performed to release the welding stress of the lower track assembly.

[0024] Further, in step S5, the following steps are specifically included: S51, according to the sectional structure characteristics of the lower track assembly of the dock arm vehicle, determine the sectional large assembly construction base surface and construction process; the section is constructed with the outer dock wall as the base, the outer dock wall assembly is first constructed as the base, the large inner dock wall assembly and the top deck assembly are sequentially installed, and then the upper track assembly and the lower track assembly are installed.

[0025] S52, the outer dock wall assembly is constructed as the base, the large inner dock wall assembly and the top deck assembly are sequentially installed, the main body of the section is formed, and the internal welding of the section is completed.

[0026] S53, after the internal welding of the section is completed, the upper track assembly and the lower track assembly are installed.

[0027] S54, the process control of the upper track assembly and the lower track assembly large assembly controls the height distance and the width distance of the upper track and the lower track of the dock arm vehicle, and the process control of the assembly and welding controls the straightness of the track.

[0028] Further, in step S6, the following steps are specifically included: S61, the normal total assembly construction of the total section to which the upper track and the lower track belong; S62, the total assembly construction stage controls the butt joint accuracy of the upper track and the lower track; the upper track main track working surface requirements: after welding, the polishing is smooth, the outboard side, the shipboard side and the upper surface excess height is less than 0.5mm, and the lower surface excess height is 1-2mm; the lower track main track working surface requirements: after welding, the polishing is smooth, and the excess height is less than 0.5mm.

[0029] Further, in step S7, the following steps are specifically included: S71, after the total section corresponding to the floating dock floating box area is closed, the floating box total section is closed; S72, the dock closing construction stage controls the butt joint accuracy of the upper track and the lower track; the upper track main track working surface requirements: after welding, the polishing is smooth, the outboard side, the shipboard side and the upper surface excess height is less than 0.5mm, and the lower surface excess height is 1-2mm; the lower track main track working surface requirements: after welding, the polishing is smooth, and the excess height is less than 0.5mm.

[0030] Compared with the prior art, the beneficial technical effects of the present application are: (1) the present application can effectively control the lateral bending phenomenon of the track plate by increasing the cutting allowance of the track plate and simultaneously cutting several track plates by using a multi-head flame cutting machine; the construction precision of the track plate is preferentially ensured, and the precision control difficulty of the upper and lower tracks is reduced by setting the special jig for the assembly of the upper and lower tracks on the dock arm vehicle, and taking the track main panel as the jig; the polishing workload of the track surface is reduced, and the construction benefit of the shipyard is improved by using the non-welding type sealing jig for the working surface of the track plate; the precision state of the track is monitored in real time by the steel wire pulling method during the assembly, welding and assembly process of the track, and the S-shaped distortion of the special-shaped cross-section slender track is avoided, so that the construction precision of the track is ensured.

[0031] (2) the present application determines the overall construction process of the upper and lower tracks of the dock arm vehicle by analyzing the working characteristics of the dock arm vehicle equipment and the structure form of the upper and lower tracks of the dock arm vehicle; the construction difficulty of the upper and lower track structures of the dock arm vehicle is reduced by designing a reasonable construction base surface, assembly process and welding sequence of the upper and lower track structures of the dock arm vehicle.

[0032] (3) the present application proposes the precision requirement of the final finished state of the upper and lower tracks of the dock arm vehicle according to the working principle and operation requirement of the dock arm vehicle equipment, and decomposes it step by step to determine the priority of each precision index at each stage, avoid design redundancy, and improve the construction benefit of the company. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of a dock arm vehicle.

[0034] Figure 2 is a schematic diagram of the segments to which the upper and lower tracks of the dock arm vehicle belong.

[0035] Figure 3 is a cross-sectional view of the working surface of the upper track of the dock arm vehicle in Example 1.

[0036] Figure 4 is a cross-sectional view of the working surface of the lower track of the dock arm vehicle in Example 1.

[0037] Figure 5 is a schematic diagram of the final precision requirement of the upper and lower tracks of the dock arm vehicle in Example 1.

[0038] Figure 6 is a schematic diagram of the cutting of the track plate of the dock arm vehicle in Example 1, wherein B represents the width and L represents the length.

[0039] Figure 7 is an assembly process diagram of the upper track of the dock arm vehicle in Example 1.

[0040] Figure 8 is a schematic diagram of the special jig for the assembly of the upper track of the dock arm vehicle in Example 1.

[0041] Figure 9 is a schematic view of A in Figure 8

[0042] Figure 10 is a schematic view of the rail panel straightness inspection method in Example 1.

[0043] Figure 11 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0044] Figure 12 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0045] Figure 13 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0046] Figure 14 is a schematic view of B in Figure 13

[0047] Figure 15 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0048] Figure 16 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0049] Figure 17 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height.

[0050] Figure 18 is a schematic view of the rail base assembly web perpendicularity control method in Example 1, wherein B represents the width and H represents the height. DETAILED DESCRIPTION

[0051] Example 1: The present embodiment provides a high-precision construction method for a dock arm vehicle track structure, comprising the following steps: S1, determining the overall construction process of the upper and lower rail tracks of the dock arm vehicle; S2, dock arm vehicle track plate blanking and bending control; S3, dock arm vehicle upper track structure assembly manufacturing; S4, dock arm vehicle lower track structure assembly manufacturing; S5, segment construction of the upper and lower rail tracks of the dock arm vehicle; S6, total segment construction of the upper and lower rail tracks of the dock arm vehicle; S7, in-dock docking construction of the total segment of the upper and lower rail tracks of the dock arm vehicle.

[0052] In step S1, the overall construction process of the upper and lower rail tracks of the dock arm vehicle is determined, which is specifically determined according to the working characteristics of the dock arm vehicle equipment and the structure form of the upper and lower rail tracks of the dock arm vehicle, to determine a construction method for the upper and lower rail track assembly itself, the upper and lower rail track assembly, the segment, the total assembly, and the docking, which comprises the following steps.

[0053] ​​(1) Analyze the working principle of the load-bearing wheels and guide wheels of the dock arm vehicle walking mechanism, and the structure of the upper and lower tracks of the dock arm vehicle.

[0054] The upper and lower tracks of the dock arm vehicle are generally long and thin structures with special cross-sections, relatively small cross-sectional dimensions, and long length dimensions. The upper and lower surfaces and the inner and outer side surfaces of the main track plate of the upper track are all working surfaces. The upper surface is arranged with a set of articulated balance beam load-bearing wheels of the dock arm vehicle, which bear the gravity of the dock arm vehicle. The track panel butt joint of the dock arm vehicle is not allowed to have misalignment during operation, and the joint of the track panel needs to be smoothly transitioned, otherwise impact load will be generated on the load-bearing wheels, affecting the service life of the dock arm vehicle. The lower surface and the inner and outer side surfaces are arranged with guide wheels of the dock arm vehicle to ensure that the dock arm vehicle does not derail during operation, as shown in Figure 3 The vertical surface of the lower track plate is arranged with measurement load-bearing wheels of the dock arm vehicle to bear the lateral pressure in the horizontal direction of the dock arm vehicle, as shown in Figure 4

[0055] (2) According to the working principle and operation requirements of the dock arm vehicle, the working principle of each motion mechanism of the dock arm vehicle is analyzed, as well as the working principle and working load of the load-bearing frame, load-bearing wheel set and guide wheel set of the dock arm vehicle. The precision requirements of the final finished state of the upper and lower tracks of the dock arm vehicle are proposed, as shown in Figure 5 The height direction between the upper track and the lower track of the dock arm vehicle is 5276mm, and the width direction between the upper track and the lower track of the dock arm vehicle is 74mm. The standard deviation of the height interval between the upper track and the lower track of the dock arm vehicle is ±5mm, and the allowable limit is ±5mm. The width interval between the upper track and the lower track of the dock arm vehicle is ±5mm, and the allowable limit is ±5mm. The flatness of the upper track of the dock arm vehicle is ≤L / 2000, and the straightness of the upper track of the dock arm vehicle is ≤L / 1000. The priority of each precision index is determined to avoid design redundancy and improve the construction efficiency of the company.

[0056] (3) According to the above overall analysis, the segmentation and total segment division of the dock wall area structure to which the dock arm vehicle belongs are determined, and the assembly division of the upper and lower tracks of the dock arm vehicle is determined. The assembly construction base surface of the upper and lower tracks of the dock arm vehicle, the large assembly construction base surface of the segment, and the total segment construction base surface of the dock wall area are determined.

[0057] In step S2, the track plate blanking and bending control method specifically includes the following steps.

[0058] (1) According to the length size requirements of the segments to which the upper and lower tracks of the dock arm vehicle belong, and combined with the market supply specifications of the track plate, the width scheme of the main track plate of the dock arm vehicle is determined. The track plate is blanked in a single segment length range, without setting a butt joint in the ship length direction, to avoid quality problems caused by poor butt joint precision.

[0059] (2) As shown in Figure 6 ​As shown, the track plate is cut down by a multi-head flame cutting machine, and several track plates are cut at the same time to reduce the risk of side bending caused by temperature difference on both sides of the track plate.

[0060] (3) Prioritize the side bending control requirements during the track plate cutting stage, while considering the track plate cutting allowance loss problem, comprehensively determine the track plate width, ensure that the temperature on both sides of the track plate is basically the same during cutting, reduce the risk of track plate side bending, improve the shipbuilding efficiency, and the cutting schematic is as shown in Figure 6 After cutting, the remaining material width is greater than 50mm, that is, if the single panel width requirement is 300mm, without considering the cutting loss, 6 panels are cut at the same time, then the width of the plate is greater than (300*6+50+50=1900) mm.

[0061] In step S3, the method for assembling and manufacturing the track structure on the dock arm vehicle, specifically comprising the following steps.

[0062] (1) According to the structure characteristics of the track assembly on the dock arm vehicle, the base surface and other elements are assembled and built, and the assembly process of the track assembly on the dock arm vehicle is determined, as shown in Figure 7 The track panel with high precision requirements is used as the template, and the track web plate, support plate, outer horizontal partition plate, outer vertical partition plate, inner vertical partition plate and inner horizontal rib are installed in turn to form a complete track assembly on the dock arm vehicle.

[0063] (2) According to the structure characteristics of the track on the dock arm vehicle, combined with the embedded iron arrangement of the track assembly building site on the dock arm vehicle, the special jig form of the track assembly on the dock arm vehicle is determined (designed specifically for the track assembly building requirements, set as needed, non-standard, non-universal type), as shown in Figure 8 and Figure 9 .

[0064] (3) Before the track T material panel is placed on the jig, the straightness of the track T material panel is checked by pulling a steel wire, as shown in Figure 10 If the straightness of the track panel is out of tolerance and there is side bending, the straightness of the track T material panel can be adjusted by mechanical straightening or water and fire straightening according to the degree of side bending.

[0065] (4) The track T material panel is placed on the jig, in order to avoid the welding scars left on the track working surface, which affects the local flatness of the track working surface, and reduces the post-welding polishing workload of the structure, the sealing plate and column slot steel on both sides of the track T material panel are welded and sealed, and the track T material panel body is not welded. The outer vertical partition plate and the inner vertical partition plate small assembly can be prefabricated at the same time.

[0066] (5) Install the track T material web plate to form the track T material, and use a ruler to check the perpendicularity between the web plate and the panel, and the checking method is as shown in Figure 11The fillet weld between the track panel and the track web plate at the inner vertical partition is completed, and each welding length is about 100 mm. The assembly process focuses on controlling the perpendicularity of the web plate to be less than or equal to 1 mm and the straightness of the web plate to be less than or equal to 2 mm.

[0067] (6) The outer side support plate, the outer side horizontal partition, the outer side vertical partition, the inner side vertical partition, and the inner side horizontal rib are sequentially installed to form a complete track assembly on the dock arm vehicle.

[0068] (7) The welding construction is performed in the track length direction using a segmented skip welding method, and the welding is symmetrically constructed on the left and right sides with the track web plate as the boundary to reduce the deformation trend of the upper track. The remaining inner side horizontal rib and the track web plate are welded at an upward angle, and the outer side horizontal partition and the track web plate are welded at an upward angle after the track assembly is turned over 90 degrees to complete the welding.

[0069] (8) After the upper track assembly welding is completed, back burning is performed to release the welding stress of the upper track assembly on the dock arm vehicle.

[0070] In step S4, the dock arm vehicle lower track structure assembly manufacturing method specifically includes the following steps: (1) According to the structural characteristics of the dock arm vehicle lower track assembly, the base surface and other elements are assembled and constructed to determine the assembly process of the dock arm vehicle lower track assembly, as shown in Figure 12 : First, the track panel and the track angle steel are butt jointed and spliced with high precision requirements, and then the track web plate, the outer side vertical partition, and the inner side vertical plate are installed after turning over 180 degrees.

[0071] (2) According to the structural characteristics of the dock arm vehicle lower track, combined with the embedded iron arrangement of the dock arm vehicle lower track assembly construction site, the form of the dock arm vehicle lower track assembly special jig is determined (designed specifically for the construction needs of the lower track assembly, set as needed, non-standard, and non-universal), as shown in Figure 13 and Figure 14 .

[0072] (3) Before the track T material panel is placed on the jig, the straightness of the track T material panel is checked by using a steel wire pulling method, as shown in Figure 10 . If the straightness of the track panel is out of tolerance and there is a side bending, the straightness of the track T material panel can be adjusted by mechanical straightening or water and fire straightening according to the degree of side bending.

[0073] (4) To avoid leaving welding scars on the track working surface, affecting the local flatness of the track working surface, and reducing the post-welding polishing workload of the structure, the sealing plate arranged on one side of the track T material panel is welded and sealed with the column groove steel, and the track T material panel body is not welded. The outer side vertical partition can be prefabricated simultaneously.

[0074] (5) The track T material web plate is installed to form the track T material. The perpendicularity between the web plate and the panel is checked using a square, and the checking method is as shown inFigure 11 The fillet weld between the track panel and the track web plate at the outer vertical partition is completed, and each welding length is about 100 mm. The assembly process focuses on controlling the web perpendicularity to be less than or equal to 1 mm and the web straightness to be less than or equal to 2 mm.

[0075] (6) The outer vertical partition and the inner vertical partition are installed.

[0076] (7) The segmented skip welding method is used in the welding construction in the length direction of the track to reduce the deformation trend of the lower track.

[0077] (8) After the lower track assembly welding is completed, back burning is performed to release the stress of the lower track assembly welding of the dock arm vehicle.

[0078] (5) In step S5, the segmented construction method of the upper track and the lower track of the dock arm vehicle includes the following steps.

[0079] (1) According to the segmented structure characteristics of the lower track assembly of the dock arm vehicle, the segmented large group construction base surface and the construction process are determined.

[0080] The segmented construction is built with the outer dock wall as the base, and the construction process is as shown in Figure 15 , which first builds the outer dock wall assembly as the base, then installs the inner dock wall large assembly and the top deck assembly in sequence, and then installs the upper track assembly and the lower track assembly of the dock arm vehicle.

[0081] (2) After the outer dock wall assembly is built as the base, the inner dock wall large assembly and the top deck assembly are installed in sequence to form the main body of the segment, and then the internal welding of the segment is completed.

[0082] (3) After the internal welding of the segment is completed, the upper track assembly and the lower track assembly are installed, as shown in Figure 16 . It is necessary to control the flatness and straightness of the upper panel of the upper track assembly and the lower track assembly of the dock arm vehicle, the height of the panel from the top deck, and the width of the panel (side) from the inner dock wall.

[0083] (4) During the assembly and welding process of the upper track assembly and the lower track assembly, the height and width spacing of the upper track and the lower track of the dock arm vehicle are controlled, as shown in Figure 17 . The track straightness is controlled during the assembly and welding process.

[0084] (6) In step S6, the total segment construction method of the upper track and the lower track of the dock arm vehicle includes the following steps: (1) the normal total group construction of the upper track and the lower track of the dock arm vehicle.

[0085] (2) The total group construction stage controls the butt joint accuracy of the upper track and the lower track. The main track working surface of the upper track requires that the post-welding polishing is smooth, the outboard side, the amidship side, and the upper surface have a residual height of less than 0.5 mm, and the lower surface has a residual height of 1-2 mm, as shown in Figure 18 .

[0086] In step S7, the method for building the upper and lower rail sections in the dock arm vehicle dock includes the following steps: (1) after the corresponding sections are docked in the floating dock floating box area, the floating box sections are docked.

[0087] (2) The docking precision of the upper and lower rails is controlled in the docked building stage. The upper rail main track working surface requirements are: after welding, the surface is polished, the outboard side, the amidships side and the upper surface have a height of less than 0.5mm, and the lower surface has a height of 1-2mm. The lower rail main track working surface requirements are: after welding, the surface is polished, and the height is less than 0.5mm, as shown in FIG. 4. Figure 18

[0088] In this embodiment, the working principle and operation characteristics of the dock arm vehicle equipment are analyzed, the building process methods of the upper and lower rail sections, subsections, sections and docking are reasonably designed, the precision requirements of each stage are reasonably decomposed, the building efficiency is improved while the building quality is ensured, the high-precision building of the upper and lower rail structures is realized, and the operation requirements of the dock arm vehicle equipment are met.

[0089] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present application should also be within the protection scope of the present application.​

Claims

1. A high-precision construction method for a dock arm vehicle track structure, characterized by, Comprising the following steps: S1, analyze the working principle of the walking mechanism of the dock arm vehicle, the working principle of the guide wheel and the structure of the upper and lower tracks of the dock arm vehicle; according to the working principle and operation requirements of the dock arm vehicle equipment, analyze the working principle of each action mechanism of the dock arm vehicle, the working principle and working load of the dock arm vehicle bearing frame, bearing wheel group and guide wheel group, put forward the accuracy requirements of the final finished state of the upper and lower tracks of the dock arm vehicle, determine the priority of each accuracy index; determine the segmentation of the dock wall area structure to which the dock arm vehicle belongs, the assembly division of the segment to which the upper and lower tracks of the dock arm vehicle belong; determine the assembly construction base surface of the upper and lower track assembly of the dock arm vehicle, the construction base surface of the segment belonging to it, and the construction base surface of the total segment of the dock wall area; S2, dock arm vehicle track plate blanking side bending control; S3, dock arm vehicle upper track structure assembly manufacturing; S4, dock arm vehicle lower track structure assembly manufacturing; S5, dock arm vehicle upper and lower track segment construction; S6, dock arm vehicle upper and lower track total segment construction; S7, dock arm vehicle upper and lower track total segment in-dock closing construction.

2. The high-precision construction method of a track structure of a dock arm vehicle according to claim 1, characterized in that, In step S2, the following steps are specifically included: S21, according to the length size requirements of the segment to which the upper and lower tracks of the dock arm vehicle belong, and combined with the market supply specifications of the track plate material, determine the track plate width scheme of the main track plate of the dock arm vehicle, the track plate is blanked in a single segment length range, and no butt joint is set in the ship length direction; S22, the track plate is cut and blanked by a multi-head flame cutting machine, and several track plates are cut at the same time; S23, preferentially ensure the side bending control requirements of the track plate blanking stage, and consider the track plate cutting allowance loss problem, comprehensively determine the track plate width, and ensure that the temperature on both sides is equivalent during track plate cutting.

3. The method of claim 2, wherein the method further comprises: In step S3, the following steps are specifically included: S31, according to the structure characteristics of the dock arm vehicle upper track assembly, determine the dock arm vehicle upper track assembly assembly process; take the track panel with high precision requirement as the reverse manufacturing, and sequentially install the track web, support plate, outer side horizontal partition plate, outer side vertical partition plate, inner side vertical partition plate and inner side horizontal rib to form a complete upper track assembly; S32, according to the structure characteristics of the dock arm vehicle upper track, combined with the embedded iron arrangement of the dock arm vehicle upper track assembly construction site, determine the form of the special jig frame of the dock arm vehicle upper track assembly; S33, before the track T material panel is placed on the jig, check the straightness of the track T material panel, if the straightness is out of tolerance and there is side bending, adjust the straightness of the track T material panel by mechanical straightening or water and fire straightening according to the degree of side bending; S34, place the track T material panel on the jig, weld the sealing plate and column channel steel on both sides of the track T material panel, and do not weld the track T material panel body; simultaneously prefabricate the outer side vertical partition plate and the inner side vertical partition plate; S35, install the track T material web to form a track T material, and use a square ruler to check the perpendicularity between the web and the panel; complete the angle weld between the track panel and the track web at the inner side vertical partition plate, and each welding length is 100mm; control the web perpendicularity ≤1mm and the web straightness ≤2mm during assembly process. S36, install the outer side support plate, the outer side horizontal partition plate, the outer side vertical partition plate, the inner side vertical partition plate and the inner side horizontal rib in sequence to form a complete dock arm vehicle upper track assembly; S37, adopt the segmented skip welding method to perform welding construction in the track length direction, simultaneously perform symmetric construction by welding left and right with the track web as the boundary, and complete the welding between the remaining inner side horizontal rib and the track web and between the outer side horizontal partition plate and the track web after the assembly is turned over by 90°; S38, back burning is performed after the upper track assembly welding is completed to release the welding stress of the dock arm vehicle upper track assembly.

4. The high-precision construction method of a dock arm vehicle track structure according to claim 3, characterized in that, In step S4, the following steps are specifically included: S41, determine the dock arm vehicle lower track assembly assembly process according to the structural characteristics of the dock arm vehicle lower track assembly; first, butt joint and splice the track panel and the track angle steel with high precision requirements, then turn over by 180° to install the track web, the outer side vertical partition plate and the inner side vertical plate; S42, determine the form of the dock arm vehicle lower track assembly special jig according to the structural characteristics of the dock arm vehicle lower track assembly and in combination with the embedded iron arrangement of the dock arm vehicle lower track assembly construction site; S43, before the track T material panel is placed on the jig, check the straightness of the track T material panel; if the straightness is out of tolerance and there is a side bending condition, adjust the straightness of the track T material panel by mechanical straightening or water fire straightening according to the side bending degree; S44, place the track T material panel on the jig, weld and seal the side of the track T material panel arranged with the sealing plate and the column channel steel, and do not weld the track T material panel body; arrange the sealing plate on one side of the track angle steel; simultaneously, prefabricate the outer side vertical partition plate; S45, install the track T material web to form the track T material, check the perpendicularity between the web and the panel with a ruler; complete the fillet welding between the track panel and the track web at the outer side vertical partition plate, and the welding length is 100 mm; control the perpendicularity of the web to be ≤1 mm and the straightness of the web to be ≤2 mm during the assembly process; S46, install the outer side vertical partition plate and the inner side vertical plate; S47, adopt the segmented skip welding method to perform welding construction in the track length direction; S48, back burning is performed after the lower track assembly welding is completed to release the welding stress of the dock arm vehicle lower track assembly.

5. The method of claim 4, wherein the method further comprises: In step S5, the following steps are specifically included: S51, determine the construction base surface and the construction process of the segmented large assembly according to the segmented structure characteristics of the dock arm vehicle lower track assembly; Construct the segmented large assembly with the outer dock wall as the jig; first, construct the outer dock wall assembly as the jig, then install the inner dock wall large middle assembly and the top deck middle assembly in sequence, and then install the upper track assembly and the lower track assembly; S52, place the outer dock wall assembly on the jig, install the inner dock wall large middle assembly and the top deck middle assembly in sequence, form the segmented main body, and then complete the internal welding of the segmented large assembly; S53, after the internal welding of the segmented large assembly is completed, install the upper track assembly and the lower track assembly; S54, control the height and width spacing of the dock arm vehicle upper track and lower track during the assembly and welding process of the upper track assembly and the lower track assembly.

6. The method of claim 5, wherein the method further comprises: In step S6, the following steps are specifically included: S61, construct the total assembly of the dock arm vehicle upper track and lower track; S62, control the butt joint precision of the upper track and the lower track during the total assembly construction stage; The upper track main track working surface requirements: after welding polishing smooth, the outboard side, the beam side and the upper surface of the remaining high less than 0.5mm, the lower surface of the remaining high 1-2mm; The lower track main track working surface requirements: after welding polishing smooth, the remaining high less than 0.5mm.

7. The method of claim 6, wherein the method further comprises: The step S7 specifically comprises the following steps: S71, after the total section of the floating dock floating box area is closed, the floating box total section is closed; S72, the docking precision of the upper and lower tracks in the dock closing construction stage is controlled; The upper track main track working surface requirements: after welding polishing smooth, the outboard side, the beam side and the upper surface of the remaining high less than 0.5mm, the lower surface of the remaining high 1-2mm; The lower track main track working surface requirements: after welding polishing smooth, the remaining high less than 0.5mm.

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