An oversized-diameter annular steel member positioning and forming device and method

Abstract

The present invention provides a positioning and forming device and method for super-large diameter annular steel members, belonging to the technical field of steel structure construction. The positioning and forming device includes: a tooling platform, at least one first tightening assembly, and at least one second tightening assembly. Among them, the first tightening assembly is telescopically arranged on the tooling platform and located inside the inner circular plate, and when the first tightening assembly is in the extended state, it tightens the inner circular plate; the second tightening assembly is telescopically arranged on the tooling platform and located outside the outer circular plate, and when the second tightening assembly is in the extended state, it tightens the outer circular plate. By setting the telescopic first tightening assembly and second tightening assembly to tighten the inner circular plate and the outer circular plate of the annular steel member, and respectively performing circularity correction on the inner circular plate and the outer circular plate in sequence, the present invention enables the super-large diameter rolling deformation to be small and controllable within the error range, ensures product quality, saves the labor amount of workers, improves production efficiency, and shortens the construction period.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure construction, and particularly relates to a positioning and forming device and method for an ultra-large diameter annular steel member. Background Art

[0002] During the process of rolling and forming, the steel plate will inevitably deform. For a round steel cylinder with a diameter greater than 4500 mm, which belongs to an ultra-large diameter steel member, using the traditional method to round the arc plate will consume time, increase the labor intensity of workers, and have low work efficiency. Moreover, the deformation amount cannot be controlled within the error range, affecting the quality of the product.

[0003] Therefore, it is necessary to propose a positioning and forming device and method for an ultra-large diameter annular steel member. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a positioning and forming device and method for an ultra-large diameter annular steel member.

[0005] On one hand, the present invention provides a positioning and forming device for an ultra-large diameter annular steel member. The ultra-large diameter annular steel member includes an inner circular plate and an outer circular plate sleeved with each other; the positioning

[0006] forming device includes:

[0007] A tooling platform;

[0008] At least one first tightening component, which is telescopically arranged on the tooling platform and located inside the inner circular plate of the annular steel member to be processed. When the first tightening component is in the extended state, it tightens the inner circular plate;

[0009] At least one second tightening component, which is telescopically arranged on the tooling platform and located outside the outer circular plate of the annular steel member to be processed. When the second tightening component is in the extended state, it tightens the outer circular plate.

[0010] Optionally, the first tightening component includes a first telescopic member and a first tightening member; wherein,

[0011] When the first telescopic member is in the extended state, one end of the first telescopic member abuts against one side of the first tightening member, and the other side of the first tightening member abuts against the inner side wall of the inner circular plate; and,

[0012] A support member is further arranged in the central area of the tooling platform, and the other end of the first telescopic member is connected to the support member.

[0013] Optionally, the first telescopic member includes a first threaded connector, a first lead screw, and a second lead screw; wherein,

[0014] The first end of the first lead screw is threadedly connected to one end of the first threaded connector, and the second end of the first lead screw abuts against the first pressing member. In addition,

[0015] A support member is further provided in the central area of the tooling platform.

[0016] The first end of the second lead screw is threadedly connected to the other end of the first threaded connector, and the second end of the second lead screw is connected to the support member.

[0017] Optionally, a rotatable driving member is also inserted through the side wall of the first threaded connector. When the driving member rotates, the first lead screw and the second lead screw move in opposite directions.

[0018] Optionally, the first pressing member includes a vertical plate and a plurality of transverse plates; wherein,

[0019] The vertical plate is disposed opposite to the inner circular plate, and one side of the vertical plate abuts against the first lead screw;

[0020] The plurality of transverse plates are clamped between the vertical plate and the inner circular plate.

[0021] Optionally, three of the transverse plates are arranged parallel to the direction perpendicular to the inner circular plate and the vertical plate.

[0022] Optionally, the second pressing assembly includes at least one second pressing member and at least one second telescopic member. Each second pressing member is connected to one second telescopic member. When the second telescopic member is in the extended state, the second pressing member abuts against the outer side wall of the outer circular plate.

[0023] Optionally, the second pressing assembly further includes at least one bracket disposed on the tooling platform. Each second telescopic member is inserted through the corresponding bracket; and,

[0024] The second pressing member includes two arc plates disposed opposite to each other. The two arc plates are respectively disposed at the top and bottom of the side of the second telescopic member facing the outer circular plate.

[0025] Optionally, the inner circular plate includes three inner arc plates, and the device includes three first pressing assemblies, each first pressing assembly corresponding to one inner arc plate; and / or,

[0026] The outer circular plate includes three outer arc plates, and the device includes three second pressing assemblies, each second pressing assembly corresponding to one outer arc plate.

[0027] On the other hand, the present invention provides a positioning and forming method for an extra-large diameter annular steel member. The specific steps include:

[0028] Arrange a retractable first clamping component and a retractable second clamping component on the tooling platform;

[0029] Lift and install the inner circular plate of the super-large diameter annular steel member on the tooling platform;

[0030] Use the first clamping component to clamp the inner side wall of the inner circular plate and round the inner circular plate;

[0031] Lift and install the outer circular plate of the super-large diameter annular steel member on the tooling platform;

[0032] Use the second clamping component to clamp the outer side wall of the outer circular plate and round the outer circular plate.

[0033] The present invention provides a positioning and forming device and method for a super-large diameter annular steel member. The device includes: a tooling platform, at least one first clamping component, and at least one second clamping component. Among them, the first clamping component is retractably arranged on the tooling platform and is located inside the inner circular plate of the annular steel member to be processed. When the first clamping component is in the extended state, it clamps the inner circular plate; the second clamping component is retractably arranged on the tooling platform and is located outside the outer circular plate of the annular steel member to be processed. When the second clamping component is in the extended state, it clamps the outer circular plate. By arranging the retractable first clamping component and the second clamping component, the inner circular plate and the outer circular plate of the annular steel member are clamped, and the inner circular plate and the outer circular plate are respectively rounded in sequence, so that the super-large diameter (not less than 4500 mm) has a small curling deformation and can be controlled within the error range, ensuring product quality, saving the labor of workers, improving production efficiency, and shortening the construction period. Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the overall structure of the positioning and forming device for a super-large diameter annular steel member according to an embodiment of the present invention;

[0035] Figure 2 It is a top view structure diagram of the positioning and forming device for a super-large diameter annular steel member according to another embodiment of the present invention;

[0036] Figure 3 It is a front view structure diagram of the positioning and forming device for a super-large diameter annular steel member according to another embodiment of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the first retractable member according to another embodiment of the present invention;

[0038] Figure 5 It is a schematic diagram of the structure of the second clamping component according to another embodiment of the present invention. Detailed Embodiments

[0039] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0040] Unless otherwise specifically stated, the technical terms or scientific terms used in the present invention should have the ordinary meaning understood by those with ordinary skills in the field to which the present invention pertains. The "including" or "comprising" used in the present invention neither limits the mentioned shapes, numbers, steps, actions, operations, components, elements and / or their groups, nor excludes the appearance or addition of one or more other different shapes, numbers, steps, actions, operations, components, elements and / or their groups. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity and order of the indicated technical features.

[0041] In some descriptions of the invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "coupled" or "fixed" and the like do not limit to physical or mechanical connections, but may include electrical connections, whether direct or indirectly through intermediate media, and may be the internal communication of two elements or the interaction relationship between two elements. Also, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to represent the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] As Figures 1 to 5 shown, on the one hand of the present invention, there is provided a positioning and forming device for an extra-large diameter annular steel member. Among them, the extra-large diameter annular steel member to be processed includes an inner circular plate 110 and an outer circular plate 120 sleeved with each other; the positioning and forming device includes: a tooling platform, at least one first tightening assembly 210 and at least one second tightening assembly 220. The first tightening assembly 210 is telescopically arranged on the tooling platform and is located inside the inner circular plate 110 of the annular steel member to be processed. When the first tightening assembly 210 is in the extended state, it tightens the inner circular plate 110; the second tightening assembly 220 is telescopically arranged on the tooling platform and is located outside the outer circular plate 120 of the annular steel member to be processed. When the second tightening assembly 220 is in the extended state, it tightens the outer circular plate 120.

[0043] It should be noted that the steel component to be processed in this embodiment is a cylindrical structure, including an inner circular plate and an outer circular plate sleeved with each other. The diameter of the inner circular plate is 4500 mm, the diameter of the outer circular plate is 6500 mm, and the overall height is 1800 mm. In order to solve the process problem of circularity correction after the inner circular plate and the outer circular plate are formed by rolling, in this embodiment, a telescopic first tightening component and a second tightening component are arranged on the tooling platform as a tooling fixture to respectively tighten the inner circular plate and the outer circular plate of the annular steel component, and sequentially perform circularity correction on the inner circular plate and the outer circular plate, so as to improve the correction accuracy, save the circularity correction time, improve the work efficiency, save costs, and control the deformation amount of the ultra-large diameter annular steel component within the error range.

[0044] Furthermore, it should be noted that based on the size data of the inner circular plate and the outer circular plate, the size range of the tooling platform in this embodiment is set to (5 m - 10 m) * (5 m - 10 m) * (25 mm - 35 mm). For example, a tooling platform with a size of 8 m * 8 m * 30 mm is set. That is, the first tightening component and the second tightening component of the entire positioning and forming device are equivalent to the tooling fixture, and the tooling fixture is fixed on the tooling platform, and the above tooling fixture is made of Q235 material.

[0045] Specifically, as Figures 1 to 4 shown, the first tightening component 210 includes a first telescopic member 211 and a first tightening member 212; wherein, when the first telescopic member 211 is in the extended state, one end of the first telescopic member 211 abuts against one side of the first tightening member 212, and a support member 230 is further arranged in the central area of the tooling platform. The other end of the first telescopic member 211 is fixed on the support member 230, and the other side of the first tightening member 212 abuts against the inner side wall of the inner circular plate 110. That is to say, through the free telescoping of the first telescopic member, when it is in the extended state, one end of the first telescopic member abuts against one side of the tightening member, and the inner circular plate is tightened by the tightening member abutting against the inner side of the inner circular plate.

[0046] Furthermore, as Figures 1 to 4 shown, the first telescopic member 211 includes a first threaded connecting member 211a, a first lead screw 211b, and a second lead screw 211c; wherein, the first end of the first lead screw 211b is threadedly connected to one end of the first threaded connecting member 211a, the second end of the first lead screw 211b abuts against the first tightening member 212, the first end of the second lead screw 211c is threadedly connected to the other end of the first threaded connecting member 211a, and the second end of the second lead screw 211c is fixedly connected to the support member 230.

[0047] It should be noted that the structure and dimensions of the support member are not specifically limited in this example. For example, it can be set as a seamless steel pipe in a circular ring shape with a size of φ1000mm * 20mm. The seamless steel pipe is welded to the tooling platform for support, and the surface of the seamless steel pipe is welded to one end of the second lead screw.

[0048] Furthermore, as Figure 4 shown, a rotatable driving member 211d is also inserted through the side wall of the first threaded connector 211a in this embodiment. When the driving member 211d rotates, the first lead screw 211b and the second lead screw 211c move in opposite directions. That is to say, the threads provided at the connection of the first lead screw, the second lead screw and the first threaded connector are reverse threads, and the first lead screw and the second lead screw are two lead screws with opposite threads, so that the two move in opposite directions. For example, when the driving member rotates in the first direction, the first lead screw and the second lead screw both move towards the first threaded connector, that is, both move inward to make the first telescopic member in a contracted state. When the driving member rotates in the second direction, the first lead screw and the second lead screw both move away from the first threaded connector, that is, both move outward to make the first telescopic member in an extended state.

[0049] It should be understood that the above first telescopic member is equivalent to a push rod, which is welded by a lead screw with opposite threads and a first threaded connector (for example, a square nut), and is similar to the structure of a wire tightener. The lead screw with opposite threads is inserted into the corresponding square nut, and one end of the lead screw is welded to the surface of the seamless steel pipe. A driving member (for example, a steel pipe) is inserted into the hole with a diameter of φ20, and rotating the steel pipe can make the entire extended first lead screw and second lead screw with opposite threads extend or contract.

[0050] As Figure 1 shown, the first tightening member 212 includes a vertical plate 212a and a plurality of transverse plates 212b; wherein, the vertical plate 212a is disposed opposite to the inner circular plate 110, and one side of the vertical plate 212a abuts against the first lead screw 211b; the plurality of transverse plates 212b are clamped between the vertical plate 212a and the inner circular plate 110, that is, when the first tightening assembly tightens the inner circular plate, the inner circular plate is uniformly stressed through the first tightening member, and the deformation amount is controlled within the error range.

[0051] It should be noted that the dimensions of the vertical plate are not specifically limited in this embodiment and can be set according to the specific dimensions of the inner circular plate. For example, the height of the vertical plate is set to 1400mm, and the thickness of the vertical plate is set to 20mm.

[0052] Further, it should be noted that the number of transverse plates is not specifically limited in this embodiment. For example, in some embodiments, three transverse plates are arranged in parallel along the direction perpendicular to the inner circular plate and the vertical plate, and the inner circular plate is abutted against the inner side wall of the inner circular plate through the three transverse plates to make the inner circular plate uniformly stressed.

[0053] It should be understood that in order to fit more closely with the inner wall of the inner circular plate, the transverse plate should be set to an arc-shaped structure, that is, the first tightening member is welded by a vertical plate and three transversely welded arc-shaped transverse plates, and the first lead screw and the second lead screw of the rotating driving member are extended so that the first lead screw is tightened against the vertical plate.

[0054] It should be noted that the above-mentioned first tightening assembly is equivalent to a fixture for the inner circular plate, and after it is completed, it needs to be machined to complete the precision control. After the inner circular plate is tightened by the first tightening assembly, the inner circular plate is calibrated. Specifically, a lifting lug is welded at the vertical plate, and then the tooling is transferred to the vertical lathe by a sling for machining. After the machining is completed, the flatness of the upper and lower ends of the fixture (for example, the upper and lower ends of the vertical plate or the three horizontal plates) does not exceed 1mm, and the verticality of the outer surface of the horizontal plate does not exceed 0.5mm. After the inner circular plate is rolled, it is moved to the tooling platform with a sling and close to the outer surface of the horizontal plate to prepare for the calibration of the inner circular plate.

[0055] Specifically, during the rounding process of the inner circular plate, the driving member is rotated to extend the end of the first screw and press against the vertical plate, the upper end of the inner circular plate is aligned with the horizontal plate by the guide chain, and the lower end is supported by the jack to align with the horizontal plate, and the pressure of the oil cylinder and the tension of the guide chain are slowly increased. The verticality and roundness of the rolled plate are measured every 20° along the circumferential direction, and the pressure of the jack and the tension of the guide chain are continuously adjusted. The verticality of the inner circular plate is measured to be no more than 2mm, and the roundness is no more than 3mm, that is, the quality of the rounding of the inner circular plate is qualified.

[0056] It should be further explained that the inner circular plate of the present embodiment is composed of three inner circular arc plates. Correspondingly, the number of the first tightening assemblies is three, that is, three first telescopic parts are welded at equal intervals on the outer peripheral wall of the support part, each first telescopic part corresponds to a first tightening part, and each first tightening part corresponds to an inner circular arc plate.

[0057] It should be noted that the present embodiment does not impose any specific limitation on the length of each first tightening member. Along the circumferential direction of the inner circular plate, the length of the first tightening member can be the same as the length of each inner arc plate, or it can be shorter than the length of each inner arc plate, as long as it can tighten the inner arc plate and ensure uniform force.

[0058] Furthermore, since the steel member to be processed in this embodiment is a cylindrical structure, when the inner circular plate is calibrated and qualified, the outer circular plate needs to be further fixed when the outer circular plate is calibrated. Specifically, in this embodiment, a connecting plate is provided between the inner circular plate and the outer circular plate.

[0059] It should be noted that the structure and quantity of the connecting plates are not specifically limited in this embodiment. For example, a plurality of rectangular connecting plates are spot-welded at equal intervals along the outer peripheral wall of the inner circular plate, and the outer circular plate is transported to the platform by a lifting tool and aligned with the connecting plates.

[0060] Specifically, as Figures 1 to 5 shown, the second pressing component 220 includes at least one second pressing member 221 and at least one second telescopic member 222. Each second pressing member 221 is connected to a second telescopic member 222. When the second telescopic member 222 is in the extended state, the second pressing member 221 abuts against the outer side wall of the outer circular plate 120.

[0061] Furthermore, as Figures 1 to 5 shown, the second pressing component 220 further includes a bracket 223 provided on the tooling platform. The second telescopic member 222 includes a second threaded connection member (for example, a nut) inserted through the bracket 223 and a third lead screw threadedly connected to the second threaded connection member. The first end of the third lead screw is connected to the second pressing member 221. That is, the bracket in this embodiment plays a role of supporting and fixing.

[0062] Even further, as Figure 5 shown, a third threaded connection member (for example, a square nut) is connected to the first end of the third lead screw. The second pressing member 221 includes two arc plates arranged oppositely, and the two arc plates are respectively arranged at the top end and the bottom end of the third threaded connection member.

[0063] It should be noted that the quantity and size of the second pressing members, the second telescopic members, and the brackets included in each second pressing component are not specifically limited in this embodiment. It can be set to only one and abutted against the outer side wall of the outer circular plate, or two, three, or more second pressing members, second telescopic members, and brackets can be set, and the outer circular plate is pressed tightly by multiple second pressing members.

[0064] Exemplarily, as Figures 1 to 3 shown, in some embodiments, each second pressing component 220 includes three second pressing members 221, three second telescopic members 222, and three brackets 223. That is, each second pressing member 221 corresponds to a second telescopic member 222 and a bracket 223.

[0065] The outer circular plate in this embodiment is composed of three outer arc plates. Correspondingly, the device includes three second pressing components, and each second pressing component corresponds to an outer arc plate.

[0066] It should be further noted that the structure and size of the brackets are also not specifically limited in this embodiment, and can be specifically set according to the specific size of the outer circular plate. For example, the bracket is selected as a rectangular pipe with a specification of 500mm * 300mm * 8mm to make a three-legged bracket.

[0067] It should still be noted that this embodiment does not specifically limit how the second threaded connector and the third lead screw are passed through the bracket. For example, holes can be drilled on the outer surface of the rectangular tube of the tripod bracket structure, and the second threaded connector (for example, a nut) can be aligned and welded with the perforated rectangular tube, then the third lead screw is rotated and inserted, and the third threaded connector (for example, a square nut) is screwed into the end of the third lead screw and welded to the third lead screw, and a set of second tightening members composed of two arc plates are welded at both ends of the square nut, that is, one arc plate is welded at the upper end of the square nut and the other arc plate is welded at the lower end, so as to tighten the outer side wall of the outer circular plate through the second tightening member to prepare for the alignment of the outer circular plate. Remove the lifting tool and rotate the third lead screw at the tripod bracket so that the second tightening member presses against the outer circular plate.

[0068] Furthermore, after the outer circular plate is tightened by the second tightening assembly, the alignment process of the outer circular plate is as follows: the upper end of the outer circular plate is tightened by a chain hoist, and the middle is tightened by a tripod bracket, and the tension of the chain hoist and the pressure of the push rod of the tripod bracket are continuously increased. After a period of time, the roundness and perpendicularity of the outer circular plate are measured every 20° along the arc. If the roundness of the outer circular plate does not exceed 3 mm and the perpendicularity does not exceed 2 mm, then the outer circular plate is qualified for roundness correction.

[0069] On the other hand, the present invention provides a positioning and forming method for an extra-large diameter ring-shaped steel member, and the specific steps include:

[0070] First, the retractable first tightening assembly and the retractable second tightening assembly are arranged on the tooling platform. For the specific structures of the first tightening assembly and the second tightening assembly, please refer to the previous records and will not be elaborated here.

[0071] Second, the inner circular plate of the extra-large diameter ring-shaped steel member is hoisted onto the tooling platform.

[0072] Third, the first tightening assembly is tightened against the inner side wall of the inner circular plate, and the inner circular plate is aligned for roundness.

[0073] Fourth, the outer circular plate of the extra-large diameter ring-shaped steel member is hoisted onto the tooling platform.

[0074] Fifth, the second tightening assembly is tightened against the outer side wall of the outer circular plate, and the outer circular plate is aligned for roundness.

[0075] Next, the positioning and forming device and method for the extra-large diameter ring-shaped steel member will be described with specific embodiments:

[0076] Alignment process of the inner circular plate:

[0077] The center position of the tooling is supported by a support member (e.g., seamless steel pipe) with a size of φ1000mm * 20mm welded on the tooling platform. Three groups of first telescopic members (e.g., ejector rods) are welded on the surface of the seamless steel pipe. The ejector rod is welded by a first lead screw with left - hand and right - hand threads, a second lead screw, and a first threaded connection member (e.g., square nut). Insert the first lead screw with left - hand and right - hand threads and the second lead screw into the corresponding square nuts, and spot - weld one end of the second lead screw on the surface of the seamless steel pipe. Insert a driving member (e.g., steel pipe) into a φ20 hole. Rotating the steel pipe can make the entire extended first lead screw and second lead screw extend or contract. The middle part between the first telescopic member and the inner circular plate is welded by a vertical plate with a height of 1400mm and a thickness of 20mm and three arc - shaped transverse plates welded horizontally, that is, the first clamping member (a total of three groups of the first clamping members). By rotating the steel pipe, the first lead screw is extended to tighten against the vertical plate. After the entire tooling fixture is made, precision control needs to be completed by machining. Weld lifting lugs at the vertical plate, and then use a lifting tool to transfer the tooling platform to a vertical lathe for machining. After machining, the flatness of the upper and lower ends of the first clamping component fixture does not exceed 1mm, and the perpendicularity at the outer surface of the transverse plate does not exceed 0.5mm. After the inner circular plate is rolled into a circle, use a lifting tool to move it to the tooling platform and close to the outer surface of the transverse plate to prepare for the roundness correction of the inner circular plate.

[0078] During the roundness correction process of the inner circular plate, extend the end of the first lead screw and tighten it against the vertical plate. Use a chain hoist to align the upper end of the inner circular plate with the transverse plate, and use a jack to support and align the lower end of the inner circular plate with the transverse plate. Slowly increase the pressure of the oil cylinder and the tension of the chain hoist. Measure the perpendicularity and roundness of the rolled plate every 20° along the circumferential direction, and continuously adjust the pressure of the jack and the tension of the chain hoist. When the perpendicularity of the inner circular plate does not exceed 2mm and the roundness does not exceed 3mm, the quality of the roundness correction of the inner circular plate is qualified.

[0079] The correction process of the outer circular plate is as follows:

[0080] After the inner circular plate is corrected and qualified, draw a line on the inner circular plate and spot weld the connecting plate. Use a sling to transfer the outer circular plate to the tooling platform and align it with the connecting plate. Use a rectangular tube with a specification of 500mm*300mm*8mm to make a tripod bracket, and drill holes on the outer surface of the rectangular tube. Align the second threaded connector (for example, a nut) with the rectangular tube with a hole and weld it, and then rotate and install the third screw. Screw the third threaded connector (for example, a square nut) into the end of the third screw and spot weld it on the third screw. Weld a set of second tightening members composed of arc plates at both ends of the square nut to tighten the outer circular plate in preparation for the correction of the outer circular plate. Remove the sling and rotate the third screw and the second tightening member structure at the tripod to hold the outer circular plate. The upper end of the outer circular plate is tightened with a guide chain, and the middle is tightened with a tripod, and the tension of the guide chain and the pressure of the tripod push rod are continuously increased. After a period of time, measure the roundness and verticality of the outer circular plate every 20° along the arc. If the roundness of the outer circular plate does not exceed 3mm and the verticality does not exceed 2mm, then the outer circular plate calibration is qualified.

[0081] At this point, the inner and outer circular plates have been calibrated. Finally, the connecting plate and the inner surface of the outer circular plate are spot welded, and the guide chain and jack are removed to prepare for the next step.

[0082] The present invention provides a positioning and forming device and method for annular steel components of super-large diameter, which has the following beneficial effects compared with the prior art: the present invention arranges a retractable first tightening assembly and a second tightening assembly to tighten the inner circular plate and the outer circular plate of the annular steel component, and calibrates the inner circular plate and the outer circular plate in turn, so that the deformation of the super-large diameter (not less than 4500mm) curling is small and can be controlled within the error range, thereby ensuring product quality, saving workers' labor, improving production efficiency, and shortening construction period.

[0083] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A positioning and forming method for a positioning and forming device of an extra-large diameter ring-shaped steel member, characterized in that, the positioning and forming device of the extra-large diameter ring-shaped steel member includes: a tooling platform; a plurality of first tightening components, the first tightening components are telescopically arranged on the tooling platform and are located inside the inner circular plate of the ring-shaped steel member to be processed. When the first tightening components are in the extended state, they tighten the inner side wall of the inner circular plate and round the inner circular plate; wherein, the first tightening components include a first telescopic member and a first tightening member; wherein, when the first telescopic member is in the extended state, one end of the first telescopic member abuts against one side of the first tightening member, and the other side of the first tightening member abuts against the inner side wall of the inner circular plate; a support member is further arranged in the central area of the tooling platform, and the other end of the first telescopic member is connected to the support member; the first telescopic member includes a first threaded connector, a first lead screw and a second lead screw; wherein, the first end of the first lead screw is threadedly connected to one end of the first threaded connector, and the second end of the first lead screw abuts against the first tightening member, the first end of the second lead screw is threadedly connected to the other end of the first threaded connector, and the second end of the second lead screw is connected to the support member; a rotatable driving member is also penetrated through the side wall of the first threaded connector. When the driving member rotates, the first lead screw and the second lead screw move in opposite directions; the first tightening member includes a vertical plate and a plurality of transverse plates; wherein, the vertical plate is arranged opposite to the inner circular plate, and one side of the vertical plate abuts against the first lead screw; the plurality of transverse plates are clamped between the vertical plate and the inner circular plate; a plurality of second tightening components, the second tightening components are telescopically arranged on the tooling platform and are located outside the outer circular plate of the ring-shaped steel member to be processed. When the second tightening components are in the extended state, they tighten the outer side wall of the outer circular plate and round the outer circular plate; wherein, the second tightening components include at least one second tightening member and at least one second telescopic member. Each second tightening member is connected to one second telescopic member. When the second telescopic member is in the extended state, the second tightening member abuts against the outer side wall of the outer circular plate; the second tightening components further include at least one bracket arranged on the tooling platform, and each second telescopic member penetrates through the corresponding bracket; and, the second tightening member includes two arc plates arranged oppositely, and the two arc plates are respectively arranged at the top and bottom of the second telescopic member facing the outer circular plate; the positioning and forming method includes: arranging the telescopic first tightening components and the telescopic second tightening components on the tooling platform; hoisting the inner circular plate of the extra-large diameter ring-shaped steel member onto the tooling platform; tightening the first tightening components against the inner side wall of the inner circular plate and rounding the inner circular plate; after the inner circular plate is corrected and qualified, a plurality of rectangular connecting plates are spot-welded at equal intervals along the outer peripheral wall of the inner circular plate, and the outer circular plate is transported to the platform by a hoist and aligned with the connecting plates; Tighten the second tightening component against the outer side wall of the outer circular plate and round the outer circular plate.

2. The method according to claim 1, wherein, Three of the transverse plates are arranged parallel to the direction perpendicular to the inner circular plate and the vertical plate.

3. The method according to claim 1 or 2, wherein, The inner circular plate includes three inner arc plates, and the device includes three first tightening components, each of the first tightening components corresponding to one of the inner arc plates; and / or, The outer circular plate includes three outer arc plates, and the device includes three second tightening components, each of the second tightening components corresponding to one of the outer arc plates.

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