CN118622601B - Group method in upper section of guide frame - Google Patents
Group method in upper section of guide frame Download PDFInfo
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- CN118622601B CN118622601B CN202411119699.3A CN202411119699A CN118622601B CN 118622601 B CN118622601 B CN 118622601B CN 202411119699 A CN202411119699 A CN 202411119699A CN 118622601 B CN118622601 B CN 118622601B
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Abstract
The application discloses a method for assembling an upper section of a guide frame, which relates to the technical field of guide frames of wind turbine generators, and integrally adopts a reverse manufacturing process, and comprises the following steps: a step of ground sample scribing and jig arrangement; a panel structure pre-assembling step, namely placing the manufactured main body panel and the outer side panel on a horizontal jig frame for pre-assembling; a main body truss sub-installation step, namely sequentially installing the main body truss sub-parts on a main body panel, and welding and assembling a main body frame; the method comprises the steps of steel pipe column installation and wing frame assembly, wherein manufactured outer side panels and main body panels are positioned, steel pipe columns are inserted into steel pipe column holes, the steel pipe columns, the main body frames and the outer side panels are fixed in a positioning welding manner, and outer side truss sub-components are sequentially installed on the outer side panels; the whole assembly welding step, namely welding and fixing the main body frame, the steel pipe upright post and the wing picking frame; and (5) turning over. The application can control the installation deformation and the installation precision of the upper structural part of the guide frame.
Description
Technical Field
The application relates to the technical field of guide frames of wind turbines, in particular to a method for assembling an upper section of a guide frame.
Background
Wind power has been rapidly developed as a clean energy source with the transformation of global energy structures and the increase of demand for renewable energy. Particularly in the field of offshore wind power, the development and utilization of offshore wind power are paid attention to because of the abundant and stable wind energy resources. The construction environment of the offshore wind farm is relatively complex, and various factors including sea water depth, seabed geology, wind speed and the like all put higher requirements on the stability and safety of the wind turbine generator.
To cope with these challenges, guide frames are widely used as an auxiliary structure, and the guide frames are generally manufactured in sections in an upper and lower part. The upper section structure of the guide frame mainly comprises a panel, a platform rib, a truss structure, a steel pipe column, a hanging system, hanging points and other mechanisms. The upper section panel structure of the guide frame is thinner, so that the guide frame is easy to deform during assembly, and the precision requirement on the folding position of the upper section and the lower section is higher during the assembly of the guide frame. Therefore, the process of the middle group of the upper section of the guide frame needs to be strictly controlled, and the deformation is controlled so as to meet the requirement of the follow-up total group precision. However, the conventional assembly process is adopted in the upper section of the prior guide frame, so that the deformation is large, and the precision requirement is difficult to ensure.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the embodiment of the application provides a method for assembling the upper section of the guide frame, which can control the installation deformation and the installation precision of structural members of the upper section of the guide frame.
According to the method for assembling the upper section of the guide frame, disclosed by the embodiment of the application, a reverse manufacturing process is integrally adopted, and the method comprises the following steps of:
And (3) a ground sample scribing and jig arranging step: drawing a ground pattern line and a height datum line, and arranging a horizontal jig after finishing the ground pattern line and the height datum line;
The pre-assembling step of the panel structure: the panel structure is divided into a main body panel and a plurality of outer side panels which are respectively arranged at the left side and the right side of the main body panel for prefabrication, wherein the main body panel is provided with a plurality of first platform small ribs, the outer side panel is provided with a plurality of second platform small ribs, and a plurality of steel pipe column holes are formed between the main body panel and the outer side panels; the manufactured main body panel and the manufactured outer side panel are placed on a horizontal jig frame for pre-splicing, whether the overall pre-splicing size of the panel structure is qualified or not is checked, whether the first platform small rib and the second platform small rib are dislocated or not is checked, and whether the positioning of the steel pipe column holes is accurate or not is checked; after the inspection is qualified, drawing a main body truss installation line on the inner side of the main body panel by taking the steel pipe column hole of the panel structure as a reference;
The main body truss subsection installation step: the truss structure is divided into a plurality of main body truss sub-parts and a plurality of outer side truss sub-parts for prefabrication, and each main body truss sub-part is sequentially installed on the main body panel by referring to the main body truss installation line and fixed on a first platform rib of the main body panel by spot welding; each main body truss sub-part forms a main body truss sub-part; the main body panel, the first platform rib and the main body truss are divided into a main body frame for measuring; after the overall size of the main body frame is qualified, welding and fixing the main body panel, the first platform rib and the main body truss subsection, and welding and assembling the main body frame;
The steel pipe column installation and wing frame assembly steps: placing the manufactured outer side panels on a horizontal jig frame, positioning the outer side panels and the main body panels, inserting steel pipe upright posts into the steel pipe upright post holes, positioning and welding the steel pipe upright posts, the main body frame and the outer side panels, fixing the steel pipe upright posts, and drawing an outer side truss installation line on the inner side of the outer side panels by taking the steel pipe upright post holes of the panel structures as a reference after the inspection size is qualified; sequentially mounting the outer truss sub-components on the outer panel by referring to the outer truss mounting line, and spot-welding and fixing the outer truss sub-components on a second platform rib of the outer panel; each outer truss sub-part forms an outer truss sub-part, the outer panel and the outer truss sub-part form two wing picking frames positioned at the left side and the right side of the main body frame, and the main body frame and the two wing picking frames form an upper section of the guide frame; the whole assembly dimension of the upper section of the guide frame is measured according to the middle group detection table, so that the installation dimension of the steel pipe upright post and the whole dimension of the upper section of the guide frame are ensured to be qualified;
and (3) integral assembly welding: after the assembly size is checked to be qualified, welding and fixing the main body frame, the steel pipe upright post, the outer side panel, the second platform small rib and the outer side truss subsection;
turning over: turning over the upper section of the guide frame.
In an alternative or preferred embodiment, in the step of integrally assembling and welding, the main body frame and one of the wing frames are assembled and welded to form an upper-section main body platform, and the other wing frame is independently assembled and welded; in the turning-over step, the upper section main body platform and the wing picking frame are turned over independently; and after the turning-over step, folding the upper-section main body platform and the wing picking frame. The upper section main body platform is turned over, and the method comprises the following steps of: the upper section main body platform is provided with a plurality of overturning lifting lugs, and after the overturning lifting lugs Application for Inspection are qualified, the whole overturning is carried out, and the upper section of the guide frame is overturned for 90 degrees and then 90 degrees so as to realize the whole overturning.
In this disclosed embodiment, upper segment main part platform sets up stands up the lug, includes: the main body frame and the wing frame are assembled on one side, the top of the main body truss subsection is provided with a plurality of first lifting lugs, and the bottoms of the two steel pipe upright posts are respectively provided with a third lifting lug; and a plurality of second lifting lugs are arranged on the side edge of the bottom of the main body truss subsection, which is not assembled with the wing frame. Further, the first lifting hook and the second lifting hook are adopted to turn over the upper section main body platform, and the method comprises the following steps: the first lifting hook is connected with the first lifting lug through a rope, the second lifting hook is connected with the second lifting lug through the rope, the first lifting hook and the second lifting hook are lifted, and then the second lifting lug is continuously lifted, so that the upper-section main body platform turns over by 90 degrees; then loosen first lifting hook, first lifting hook joins in marriage the rope again and is connected with the third lug, and first lifting hook and second lifting hook lift by crane, later through continuing the lifting to the third lug, make upper segment main part platform stands up 90 again to accomplish the whole stands up of upper segment main part platform.
In an alternative or preferred embodiment, in the main body truss sub-mounting step, the main body truss sub-mounting sequence is mounted from a middle position of the main body panel toward a peripheral direction.
In an alternative or preferred embodiment, temporary supports are arranged at intervals in the main body truss sub-installation step, and the main body truss sub-parts are supported, so that the installation accuracy of the main body truss sub-parts after welding is improved.
In an alternative or preferred embodiment, the location where the main body panel and the outer side panel are connected, the first platform rib and the second platform rib have a rib butt weld therebetween, and the main body panel and the outer side panel have a panel butt weld therebetween, wherein a portion of the rib butt weld is offset from the panel butt weld.
In an alternative or preferred embodiment, in the main body truss sub-mounting step, the main body frame is welded in a direction from a central position to a peripheral direction of the structure.
In an alternative or preferred embodiment, the accuracy of the truss structure requires: the width of the truss section is +/-3 mm, the internode length is +/-3 mm, the diagonal line of the truss is +/-4 mm, the flatness of the truss is less than or equal to 3mm, and the axial bending sagittal height is less than or equal to 5mm; overall accuracy of the upper section of the guide frame: full length is +/-5 mm, diagonal is +/-3 mm, center distance of main truss sub-parts is +/-3 mm, overall flatness is less than or equal to 10mm, flatness per meter unit is less than or equal to 6mm, and verticality is less than or equal to 3mm.
Based on the technical scheme, the embodiment of the application has at least the following beneficial effects: the whole upper section of the guide frame adopts a reverse manufacturing process, so that the first platform small rib and the second platform small rib of the panel structure are convenient to install, and meanwhile, the truss structure is also convenient to install; the panel structure is divided into a main body panel and an outer side panel, the partial jointed boards are prefabricated firstly, then the whole jointed boards are assembled, assembly deformation is reduced, wherein after the assembly of the main body truss subsection and the main body panel is completed, the steel pipe upright post is installed, the outer side panel and the outer side truss subsection are installed finally, the installation sequence can facilitate the smooth installation of each part, and proper positioning time, spot welding fixing time and welding fixing time are designed for the main body panel, the outer side panel, the main body truss subsection, the outer side truss subsection and the steel pipe upright post, so that installation deformation can be controlled, and installation accuracy is guaranteed. The application improves the installation efficiency by improving the assembly method in the upper section of the guide frame, and improves the installation precision and the structural stability of the upper section of the guide frame by prefabrication and accurate butt joint.
Drawings
The application is further described below with reference to the drawings and examples;
FIG. 1 is a top view of an upper section of a guide frame in an embodiment of the application;
FIG. 2 is a front view of the upper section of the guide frame in an embodiment of the application;
FIG. 3 is a side view of the upper section of the guide frame in an embodiment of the application;
FIG. 4 is a schematic view of the structure of a main body panel according to an embodiment of the present application;
FIG. 5 is a schematic view of the structure of the outer side panel according to the embodiment of the present application;
FIG. 6 is a pre-assembly schematic of a body panel and an outer panel in an embodiment of the application;
figures 7-11 are schematic illustrations of the installation of a body truss section in an embodiment of the application;
FIG. 12 is a schematic view of the installation of the outer side panels and steel columns in an embodiment of the application;
FIG. 13 is a schematic view of the installation of an outer truss section in accordance with an embodiment of the application;
FIG. 14 is a fragmentary schematic view of an overall assembly in an embodiment of the application;
FIG. 15 is a lifting lug arrangement of the upper body platform in an embodiment of the application;
FIG. 16 is a cross-sectional view taken along the direction A-A in FIG. 15;
FIG. 17 is a cross-sectional view taken in the direction B-B of FIG. 15;
FIG. 18 is a cross-sectional view taken along the direction C-C in FIG. 15;
FIG. 19 is a schematic view of a top body platform in an embodiment of the present application;
FIG. 20 is a second schematic view of a top body platform according to an embodiment of the present application;
FIG. 21 is a flow chart of steps of an embodiment of the present application.
Reference numerals: an upper guide frame section 100, a main body frame 101, a wing frame 102, and an upper main body platform 103;
Panel structure 110, body panel 1110, first platform rib 1111, outer panel 1120, first outer panel 1121, second outer panel 1122, third outer panel 1123, fourth outer panel 1124, second platform rib 1125, steel pipe column hole 1130;
Truss structure 120, main body truss section 1210, main body truss section 1211, outer truss section 1220, outer truss section 1221;
steel pipe column 130;
a first lifting lug 211, a second lifting lug 212, a third lifting lug 213;
a first hook 221, a second hook 222.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The guide frame is widely used as an auxiliary structure for positioning and guiding piles in marine wind power construction. The guide frame is generally divided into an upper part and a lower part for sectional manufacturing during manufacturing. Referring to fig. 1 to 3, the guide frame upper section 100 includes a panel structure 110, a truss structure 120, and steel pipe columns 130, the truss structure 120 supporting the panel structure, the steel pipe columns 130 being disposed at four corners of the panel structure 110 and passing through the panel structure 110 and the truss structure 120.
However, the panel structure 110 of the upper segment 100 of the guide frame has a relatively thin thickness, so that the panel structure is easy to deform during assembly, and the precision of the folding position of the upper segment and the lower segment is relatively high during assembly of the guide frame. Therefore, the process of the middle group of the upper section of the guide frame needs to be strictly controlled, and the deformation is controlled so as to meet the requirement of the follow-up total group precision. However, the conventional assembly process is adopted in the upper section of the prior guide frame, so that the deformation is large, and the precision requirement is difficult to ensure.
Referring to fig. 4 to 21, this embodiment describes a method of assembling the upper section of the guide frame, and adopts a reverse manufacturing process as a whole.
In the middle group method of the present embodiment, the panel structure 110 is prefabricated by dividing it into a main body panel 1110 and a plurality of outer side panels 1120 provided on both left and right sides of the main body panel 1110. Wherein, as shown in fig. 4, the main body panel 1110 is provided with a plurality of first platform ribs 1111; as shown in fig. 5, the outer panel 1120 is provided with a plurality of second platform ribs 1125.
In this embodiment, as shown in fig. 5, four outer panels 1120 are provided, namely, a first outer panel 1121, a second outer panel 1122, a third outer panel 1123, and a fourth outer panel 1124. As will be appreciated in connection with fig. 6, the first and second outer panels 1121, 1122 are mounted to the left side of the body panel 1110, and the third and fourth outer panels 1123, 1124 are mounted to the right side of the body panel 1110. The left and right sides of the body panel 1110 are described based on the orientations shown in the drawings, and do not refer to a specific orientation.
The truss structure 120 is prefabricated divided into a plurality of main body truss sections 1211 and a plurality of outer truss sections 1221. The body truss segment 1211 is positioned inboard of the body panel 1110 and the outer truss segment 1221 is positioned inboard of the outer panel 1120.
The method for assembling the upper section of the guide frame specifically comprises the following steps with reference to fig. 21:
S1, pattern scribing and jig arranging:
setting a ground sample block and a base line marker post on the ground of the middle group area, then drawing a height datum line of the middle group closure on the base line marker post by laser, printing a foreign language on the base line marker post, drawing a ground sample line, and then arranging a horizontal jig frame. Wherein, the accuracy of the ground sample line is less than or equal to 1.5 mm; the accuracy of the height datum line is less than or equal to 1.5mm.
S2, a panel structure pre-assembling step:
Referring to fig. 6, the manufactured body panel 1110 and outer panels 1120 are pre-assembled on a horizontal jig frame, wherein, as shown in fig. 6, a plurality of steel pipe column holes 1130 are provided between the body panel 1110 and the plurality of outer panels 1120. Then, it is checked whether the overall pre-assembly size of the panel structure 110 is acceptable, whether there is misalignment between the first and second platform ribs 1111, 1125, and whether the positioning of the steel tube post hole 1130 is accurate.
After the inspection is passed, a main truss installation line is drawn on the inner side of the main panel 1110 with reference to the steel pipe column hole 1130 of the panel structure 110.
S3, a main body truss subsection installation step:
Referring to fig. 7 to 11, each of the body truss sub-members 1211 is sequentially mounted on the body panel 1110 with reference to the body truss mounting line, and is spot-welded to the first landing rib 1111 of the body panel 1110.
In order to reduce the amount of deformation of the body panel 1110 caused by the body truss section 1211 during installation, in this embodiment, the body truss section 1211 is installed from the middle position of the body panel 1110 in the peripheral direction. As shown in fig. 7 to 9, each main body truss section 1211 is installed in both right and left directions from the middle position of the main body panel 1110; as shown in fig. 10 to 11, each main body truss section 1211 is mounted in the front-rear side direction from the middle position of the main body panel 1110. Each of the body truss sections 1211 forms a body truss section 1210. In some embodiments, the body truss section 1210 is split such that the body truss section 1210 is required to be split according to the overall dimensions of the body truss section 1210, as will be appreciated by those skilled in the art with reference to fig. 7-11 and with appropriate adjustments made thereto. Wherein the spacing error between two adjacent truss main body truss sections 1211 is controlled to be + -3 mm. The perpendicularity of the body truss segment 1211 to the body panel 1110 is controlled to be 3mm or less. Preferably, in the main truss sub-installation step, temporary supports are provided at intervals of 5 meters, and the main truss sub-units 1211 are supported to improve the installation accuracy of the main truss sub-units after welding.
The body panel 1110, the first platform rib 1111, and the body truss section 1210 form a body frame 101, and measurements are made on the body frame 101.
After the overall size of the main body frame 101 is acceptable, the main body panel 1110, the first platform rib 1111, and the main body truss section 1210 are welded and fixed, and the main body frame 101 is assembled by welding. In order to reduce welding deformation of the main body frame 101, the main body frame 101 is welded in a welding direction from a central position to an outer peripheral direction of the structure.
S4, assembling the steel pipe upright post and the wing frame:
Referring to fig. 12, each of the outer side panels 1120 manufactured is placed on a horizontal jig and positioned with respect to the main body panel 1110, the steel pipe columns 130 are inserted into the steel pipe column holes 1130, each of the steel pipe columns 130 is fixed to the main body frame 101 and each of the outer side panels 1120 by means of positioning welding, and after the inspection size is qualified, an outer truss installation line is drawn on the inner side of the outer side panel with respect to the steel pipe column holes 1130 of the panel structure 110.
Referring to fig. 13, each outer truss section 1221 is sequentially attached to the outer panel 1120 with reference to the outer truss attachment line and spot welded to the second platform rib 1125 of the outer panel. Each outer truss section 1221 forms an outer truss section 1220, the outer panels and outer truss sections form two tab frames 102 on the left and right sides of the main body frame 101, and the main body frame 101 and the two tab frames 102 form the upper guide frame section 100.
And (3) carrying out overall assembly dimension measurement on the upper guide frame section 100 according to the middle group detection table, and ensuring that the installation dimension of the steel pipe column 130 and the overall dimension of the upper guide frame section 100 are qualified.
S5, integral assembly welding step:
After the assembly size is checked to be qualified, the main body frame 101, the steel pipe column 130, the outer side panel, the second platform rib and the outer side truss subsection are welded and fixed.
Referring to fig. 14, the main body frame 101 and the right side tab frame 102 are assembled and welded to form the upper-stage main body platform 103, and the left side tab frame 102 is individually assembled and welded.
In the above steps, the assembly welding of the main body frame 101, the integral welding of the inside of the wing frame 102 and between the main body frame 101 and the steel pipe column 130, is performed with reference to the following requirements: fillet welds of hf=8mm are used between the body panel 1110 and the outer side panel 1120, between the panel structure 110 and the truss structure 120, and between the panel structure 110 and the steel pipe column 130; the main body truss sub-parts 1211 and the corresponding main body truss sub-parts 1211 and the steel pipe upright posts 130 are welded by adopting groove welding, and V-shaped grooves are adopted; double sided fillet welds of hf=10 mm are used between each outer truss sub 1221, between outer truss sub 1221 and main truss sub 1211, and between outer truss sub 1221 and steel tube column 130. The groove weld joint must be completely melted, the appearance quality standard of the fillet weld is three-level. The welding requirements can be adaptively adjusted by a person skilled in the art according to the welding requirements of the upper section of the guide frame.
S6, turning over:
And turning over the whole upper section of the guide frame. In this embodiment, the upper body platform 103 and the wing frame 102 are turned over separately.
Specifically, the upper section main body platform 103 is turned over, a plurality of turning over lifting lugs are arranged and installed on the upper section main body platform 103, the whole turning over is carried out after the turning over lifting lugs Application for Inspection are qualified, the upper section of the guide frame is turned over by 90 degrees, and then the whole turning over is realized by 90 degrees.
Referring to fig. 15 to 18, the upper body platform 103 is provided with turning lifting lugs, including: on the assembled side of the main body frame 101 and the wing frame 102, a plurality of first lifting lugs 211 are provided on the top of the main body truss section 1210, and third lifting lugs 213 are provided on the bottoms of the two steel pipe columns 130. On the side of the main body frame 101 not assembled with the wing frame 102, a plurality of second lifting lugs 212 are provided on the bottom side of the main body truss section 1210.
The first lifting hook 221 and the second lifting hook 222 are adopted to turn over the upper section main body platform 103, and the method comprises the following steps:
Referring to fig. 19, the first lifting hook 221 is connected with the first lifting lug 211 through a rope, the second lifting hook 222 is connected with the second lifting lug 212 through a rope, the first lifting hook 221 and the second lifting hook 222 are lifted, and then the second lifting lug 212 is continuously lifted, so that the upper-stage main body platform 103 turns over by 90 degrees. Referring to fig. 20, the first lifting hook 221 is loosened, the first lifting hook 221 is re-rope-matched to be connected with the third lifting lug 213, the first lifting hook 221 and the second lifting hook 222 are lifted, and then the third lifting lug 213 is continuously lifted, so that the upper-section main body platform 103 turns over again by 90 degrees, and the whole turning over of the upper-section main body platform 103 is completed.
After the turning-over step, the upper body platform 103 and the wing frame 102 are folded.
In some of these embodiments, the body panel 1110 and the outer panel 1120 are joined at a location with a small rib butt weld between the first platform small rib 1111 and the second platform small rib 1125, and a panel butt weld between the body panel 1110 and the outer panel 1120, wherein a portion of the small rib butt weld is offset from the panel butt weld.
After assembly and folding of the upper guide frame section, the truss structure 120 has the following precision requirements: the width of the truss section is +/-3 mm, the internode length is +/-3 mm, the diagonal line of the truss is +/-4 mm, the flatness of the truss is less than or equal to 3mm, and the axial bending sagittal height is less than or equal to 5mm; overall accuracy of the upper section of the guide frame: full length is +/-5 mm, diagonal is +/-3 mm, center distance of main truss sub-parts is +/-3 mm, overall flatness is less than or equal to 10mm, flatness per meter unit is less than or equal to 6mm, and verticality is less than or equal to 3mm.
The method for assembling the upper section of the guide frame integrally adopts a reverse manufacturing process, is convenient for installing the first platform small rib and the second platform small rib of the panel structure, and is also convenient for installing the truss structure. In addition, panel structure divide into main part panel and outside panel, first local makeup prefabrication, then whole makeup reduces the equipment deformation, and wherein, after accomplishing the assemblage of main part truss subsection and main part panel, the steel pipe stand of reinstallation, outside panel and outside truss subsection of installation at last, and such installation order can be convenient for each part and install smoothly.
The middle group method adopts the integral reverse construction process, the main body frame is assembled firstly, then the steel pipe upright post is positioned and installed, and finally the assembled wing frame is installed and installed, so that the deformation and installation precision of the panel structure and the truss structure can be controlled, the positioning precision of the steel pipe upright post can be improved, and the precision requirement of the subsequent total group can be met. It is important that the embodiment designs proper positioning time, spot welding fixing time and welding fixing time for the main body panel, the outer side panel, the main body truss subsection, the outer side truss subsection and the steel pipe upright post, and is different from the conventional middle group method, so that the mounting deformation can be controlled, and the mounting precision is ensured. The application improves the installation efficiency by improving the assembly method in the upper section of the guide frame, and improves the installation precision and the structural stability of the upper section of the guide frame by prefabrication and accurate butt joint.
The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.
Claims (10)
1. The method for assembling the upper section of the guide frame is characterized in that the whole guide frame adopts a reverse manufacturing process, and comprises the following steps:
And (3) a ground sample scribing and jig arranging step: drawing a ground pattern line and a height datum line, and arranging a horizontal jig after finishing the ground pattern line and the height datum line;
The pre-assembling step of the panel structure: the panel structure is divided into a main body panel and a plurality of outer side panels which are respectively arranged at the left side and the right side of the main body panel for prefabrication, wherein the main body panel is provided with a plurality of first platform small ribs, the outer side panel is provided with a plurality of second platform small ribs, and a plurality of steel pipe column holes are formed between the main body panel and the outer side panels; the manufactured main body panel and the manufactured outer side panel are placed on a horizontal jig frame for pre-splicing, whether the overall pre-splicing size of the panel structure is qualified or not is checked, whether the first platform small rib and the second platform small rib are dislocated or not is checked, and whether the positioning of the steel pipe column holes is accurate or not is checked; after the inspection is qualified, drawing a main body truss installation line on the inner side of the main body panel by taking the steel pipe column hole of the panel structure as a reference;
The main body truss subsection installation step: the truss structure is divided into a plurality of main body truss sub-parts and a plurality of outer side truss sub-parts for prefabrication, and each main body truss sub-part is sequentially installed on the main body panel by referring to the main body truss installation line and fixed on a first platform rib of the main body panel by spot welding; each main body truss sub-part forms a main body truss sub-part; the main body panel, the first platform rib and the main body truss are divided into a main body frame for measuring; after the overall size of the main body frame is qualified, welding and fixing the main body panel, the first platform rib and the main body truss subsection, and welding and assembling the main body frame;
The steel pipe column installation and wing frame assembly steps: placing the manufactured outer side panels on a horizontal jig frame, positioning the outer side panels and the main body panels, inserting steel pipe upright posts into the steel pipe upright post holes, positioning and welding the steel pipe upright posts, the main body frame and the outer side panels, fixing the steel pipe upright posts, and drawing an outer side truss installation line on the inner side of the outer side panels by taking the steel pipe upright post holes of the panel structures as a reference after the inspection size is qualified; sequentially mounting the outer truss sub-components on the outer panel by referring to the outer truss mounting line, and spot-welding and fixing the outer truss sub-components on a second platform rib of the outer panel; each outer truss sub-part forms an outer truss sub-part, the outer panel and the outer truss sub-part form two wing picking frames positioned at the left side and the right side of the main body frame, and the main body frame and the two wing picking frames form an upper section of the guide frame; the whole assembly dimension of the upper section of the guide frame is measured according to the middle group detection table, so that the installation dimension of the steel pipe upright post and the whole dimension of the upper section of the guide frame are ensured to be qualified;
and (3) integral assembly welding: after the assembly size is checked to be qualified, welding and fixing the main body frame, the steel pipe upright post, the outer side panel, the second platform small rib and the outer side truss subsection;
turning over: turning over the upper section of the guide frame.
2. The method of grouping in the upper section of a guide frame according to claim 1, wherein: in the integral assembling and welding step, assembling and welding the main body frame and one of the wing-picking frames to form an upper-section main body platform, and independently assembling and welding the other wing-picking frame; in the turning-over step, the upper section main body platform and the wing picking frame are turned over independently; and after the turning-over step, folding the upper-section main body platform and the wing picking frame.
3. The method of assembling an upper section of a guide frame according to claim 2, wherein turning over the upper section main body platform comprises the steps of: the upper section main body platform is provided with a plurality of overturning lifting lugs, and after the overturning lifting lugs Application for Inspection are qualified, the whole overturning is carried out, and the upper section of the guide frame is overturned for 90 degrees and then 90 degrees so as to realize the whole overturning.
4. A method of assembling an upper section of a guide frame according to claim 3, wherein the upper section body platform is provided with turning lifting lugs, comprising:
The main body frame and the wing frame are assembled on one side, the top of the main body truss subsection is provided with a plurality of first lifting lugs, and the bottoms of the two steel pipe upright posts are respectively provided with a third lifting lug;
and a plurality of second lifting lugs are arranged on the side edge of the bottom of the main body truss subsection, which is not assembled with the wing frame.
5. The method of grouping in the upper section of a guide frame according to claim 4, wherein: the first lifting hook and the second lifting hook are adopted to turn over the upper section main body platform, and the method comprises the following steps:
the first lifting hook is connected with the first lifting lug through a rope, the second lifting hook is connected with the second lifting lug through the rope, the first lifting hook and the second lifting hook are lifted, and then the second lifting lug is continuously lifted, so that the upper-section main body platform turns over by 90 degrees;
Then loosen first lifting hook, first lifting hook joins in marriage the rope again and is connected with the third lug, and first lifting hook and second lifting hook lift by crane, later through continuing the lifting to the third lug, make upper segment main part platform stands up 90 again to accomplish the whole stands up of upper segment main part platform.
6. A method of assembling an upper section of a guide frame according to any one of claims 1 to 5, wherein: in the main body truss sub-installation step, the main body truss sub-assembly is installed from the middle position of the main body panel to the peripheral direction.
7. The method of grouping in the upper section of a guide frame according to claim 6, wherein: in the main body truss sub-installation step, temporary supports are arranged at intervals to support the main body truss sub-parts so as to improve the installation accuracy of the main body truss sub-parts after welding.
8. A method of assembling an upper section of a guide frame according to any one of claims 1 to 5, wherein: the main body panel is connected with the outer side panel, a small rib butt welding seam is arranged between the first small rib and the second small rib, a panel butt welding seam is arranged between the main body panel and the outer side panel, and part of the small rib butt welding seam is staggered with the panel butt welding seam.
9. A method of assembling an upper section of a guide frame according to any one of claims 1 to 5, wherein: in the main truss sub-mounting step, the main frame is welded in a direction from the middle position to the outer periphery of the structure.
10. A method of assembling an upper section of a guide frame according to any one of claims 1 to 5, wherein:
Accuracy requirements of truss structure: the width of the truss section is +/-3 mm, the internode length is +/-3 mm, the diagonal line of the truss is +/-4 mm, the flatness of the truss is less than or equal to 3mm, and the axial bending sagittal height is less than or equal to 5mm;
Overall accuracy of the upper section of the guide frame: full length is +/-5 mm, diagonal is +/-3 mm, center distance of main truss sub-parts is +/-3 mm, overall flatness is less than or equal to 10mm, flatness per meter unit is less than or equal to 6mm, and verticality is less than or equal to 3mm.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321296A (en) * | 2013-05-23 | 2013-09-25 | 江苏沪宁钢机股份有限公司 | Annular double-layer truss and manufacture method thereof |
| CN103410322A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Large-span parallel truss steel connective corridor construction method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321296A (en) * | 2013-05-23 | 2013-09-25 | 江苏沪宁钢机股份有限公司 | Annular double-layer truss and manufacture method thereof |
| CN103410322A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Large-span parallel truss steel connective corridor construction method |
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