A device and method for assisting in the assembly of a cylinder segment and flange pair

Abstract

This invention discloses an auxiliary device and method for assembling wind turbine sections and flanges, belonging to the field of wind turbine section technology. It includes an installation platform, a section support assembly on the upper part of the platform, a ring-shaped assembly frame on one side of the upper part of the platform, a circumferential moving assembly on the ring-shaped assembly frame, a circumferential limiting assembly on the ring-shaped assembly frame, a flange hole positioning assembly on one side of the upper part of the circumferential limiting assembly, and an end-face leveling assembly on the upper part of the ring-shaped assembly frame. This invention reduces the need for repeated manual hoisting, measurement, and adjustment, improves the assembly efficiency and accuracy of the wind turbine sections and flanges, and provides a stable assembly state for subsequent positioning and welding.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine cylinder technology, specifically an auxiliary device and method for assembling cylinders and flanges. Background Technology

[0002] Cylindrical sections are crucial components of pressure vessels, piping systems, storage tanks, and various cylindrical mechanical equipment. Flanges are typically located at the ends of cylindrical sections, enabling detachable connections between adjacent sections, pipelines, or other equipment components. To ensure structural strength, sealing performance, and installation accuracy after the cylindrical section and flange connection, the flange and cylindrical section ends must first be accurately aligned. This ensures good coaxiality between the flange and the cylindrical section, and that the flange end face maintains a predetermined perpendicular relationship with the cylindrical section axis. Simultaneously, the circumferential position of the flange bolt holes must meet subsequent installation requirements. After aligning and correcting the position of the cylindrical section and flange, they are then welded together to form a stable cylindrical section-flange connection structure. Therefore, the alignment accuracy before welding the cylindrical section and flange directly affects the accuracy of the flange connection position, the efficiency of subsequent equipment assembly, and the quality of the weld joint.

[0003] Currently, when assembling cylinder sections and flanges, hoisting equipment is typically used to transport the cylinder sections and flanges to the assembly station. The flange position is then adjusted manually using support blocks and auxiliary tooling. During assembly, operators need to repeatedly hoist and move the flange, using measuring tapes, levels, squares, or other measuring tools to repeatedly measure the coaxiality, end face parallelism, assembly gap, and flange hole positions between the cylinder section and flange. The flange position is then repeatedly adjusted based on the measurement results. Due to the significant weight of the cylinder sections and flanges, and the ease with which the flanges can shift radially, rotate circumferentially, or tilt during adjustment, the manual alignment process is cumbersome, inconvenient, and inefficient. Furthermore, manual adjustment is susceptible to the influence of operator experience and measurement errors, making it difficult to ensure the synchronous and accurate positioning of the flange's outer circle, bolt hole positions, and end face, thus affecting the assembly accuracy of the cylinder section and flange and the subsequent welding quality. Therefore… Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary device and method for assembling cylinder sections and flanges, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0005] An auxiliary device and method for assembling a cylindrical section and a flange are provided, including an installation platform. A cylindrical section support assembly is provided on the upper part of the installation platform. A ring-shaped assembly frame is provided on one side of the upper part of the installation platform. A circumferential moving assembly is provided on the ring-shaped assembly frame. A circumferential limiting assembly is provided on the ring-shaped assembly frame. A flange hole positioning assembly is provided on one side of the upper part of the circumferential limiting assembly. An end face leveling assembly is provided on the upper part of the ring-shaped assembly frame.

[0006] Furthermore, the cylindrical section support assembly includes a support mounting base, which is fixedly installed on the upper part of the mounting platform. The support mounting base is provided with a support frame, and each support frame is provided with a roller adjustment assembly.

[0007] Furthermore, the roller adjustment assembly includes two adjustment slides, both of which are slidably connected to the support frame. Each of the two adjustment slides is provided with a support roller, and an adjustment screw is connected to one side of the upper part of each of the two adjustment slides. The adjustment screw is rotatably connected to the support frame.

[0008] Furthermore, the circumferential moving assembly includes two moving guide rails, which are arranged parallel to each other along the axial direction of the cylindrical section on the upper part of the mounting platform. Moving slides are slidably connected to the two moving guide rails, and a ring-shaped assembly frame is fixedly connected between the two moving slides. A drive cylinder is provided on one side of the upper part of the mounting platform, and the extension end of the piston rod of the drive cylinder is fixedly connected to the moving slide. Moving guide wheels are also provided between the moving slide and the moving guide rails.

[0009] Furthermore, the circumferential limiting component includes a limiting mounting ring, and a plurality of limiting mounting seats are provided on one side of the upper part of the limiting mounting ring. Each limiting mounting seat is provided with a radial adjusting block, and each radial adjusting block is rotatably connected to a limiting roller.

[0010] Furthermore, each of the limiting mounting bases is provided with a limiting adjustment mechanism, which includes an adjusting gear rotatably connected to the limiting mounting base. A movable rack is provided on one side of the radial adjusting block, and an adjusting handle is fixedly connected to the upper side of the adjusting gear.

[0011] Furthermore, the flange hole positioning assembly includes a positioning mounting ring, which is mounted on the ring-shaped assembly frame. Several positioning cylinders are provided on one side of the upper part of the positioning mounting ring. The telescopic end of the positioning cylinder is fixedly connected to a positioning moving seat, which is slidably connected to the positioning mounting ring. A floating positioning mechanism is provided on the positioning moving seat.

[0012] Furthermore, the floating positioning mechanism includes a floating groove, which is disposed on one side of the positioning moving seat. A floating positioning block is movably disposed in the floating groove. A positioning pin is fixedly disposed on one side of the floating positioning block. A tapered guide portion is disposed at the front end of the positioning pin. Several return springs are disposed between the floating positioning block and the floating groove.

[0013] Furthermore, the horizontal and vertical dimensions of the floating groove are both larger than the corresponding dimensions of the floating positioning block. The maximum horizontal and vertical floating amounts of the floating positioning block are both 3mm to 5mm. Four return springs are provided, and the four return springs are respectively provided on both sides of the floating positioning block. The positioning pin also includes a cylindrical positioning part provided on the rear side of the tapered guide part. The outer diameter of the cylindrical positioning part is smaller than the inner diameter of the flange bolt hole.

[0014] Furthermore, the end face leveling assembly includes a leveling mounting ring, which is disposed on the ring-shaped assembly frame. The leveling mounting ring is provided with a plurality of leveling mounting seats, and each leveling mounting seat is rotatably connected with a leveling adjusting rod. The leveling adjusting rod is provided with a leveling top block, and the leveling top block is also threadedly connected with a locking nut.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: During operation, the circumferential limiting assembly engages with the outer circumferential surface of the flange to radially limit its movement, preventing radial displacement during assembly. The flange hole positioning assembly, through the engagement of positioning pins with the flange bolt holes, positions the flange circumferentially and automatically compensates for minor positional deviations in the bolt holes using a floating positioning structure, improving the accuracy of the positioning pins entering the bolt holes. The end face leveling assembly abuts against the flange end face, adjusting different positions to maintain a predetermined planar state relative to the cylinder section end face, thereby correcting any tilt or local height deviations of the flange end face. Through the coordinated operation of the cylinder section support assembly, circumferential movement assembly, circumferential limiting assembly, flange hole positioning assembly, and end face leveling assembly, cylinder section support, flange axial assembly, flange radial limiting, bolt hole circumferential positioning, and flange end face leveling can be completed sequentially. This reduces repeated manual lifting, measurement, and adjustment processes, improves the assembly efficiency and accuracy of the cylinder section and flange, and provides a stable assembly state for subsequent positioning and welding. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device and method for assembling a cylindrical section and a flange; Figure 2 A schematic diagram of the cylindrical support assembly provided by the present invention; Figure 3 This is a schematic diagram of the circumferential limiting component provided by the present invention; Figure 4 A schematic diagram of the flange hole positioning assembly provided by the present invention; Figure 5 This is a schematic diagram of the floating positioning mechanism provided by the present invention; Figure 6 A schematic diagram of the end face leveling component provided by the present invention.

[0018] In the diagram: 1. Installation platform; 2. Cylindrical section support assembly; 21. Support mounting base; 22. Support frame; 23. Roller adjustment assembly; 231. Adjusting slide; 232. Support roller; 233. Adjusting screw; 3. Ring-shaped assembly frame; 4. Circumferential moving assembly; 41. Moving guide rail; 42. Moving slide; 43. Drive cylinder; 44. Moving guide wheel; 5. Circumferential limiting assembly; 51. Limiting mounting ring; 52. Limiting mounting base; 53. Radial adjusting block; 54. Limiting roller; 55. Limiting adjustment mechanism; 551 552. Adjusting gear; 553. Moving rack; 6. Adjusting handle; 6. Flange hole positioning assembly; 61. Positioning mounting ring; 62. Positioning cylinder; 63. Positioning moving seat; 64. Floating positioning mechanism; 641. Floating groove; 642. Floating positioning block; 643. Positioning pin; 6431. Conical guide; 6432. Cylindrical positioning part; 644. Return spring; 7. End face leveling assembly; 71. Leveling mounting ring; 72. Leveling mounting seat; 73. Leveling adjusting rod; 74. Leveling top block; 75. Locking nut. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] Please see Figure 1-6 As shown in the embodiment of the present invention, an auxiliary device and method for assembling a cylinder section and a flange includes an installation platform 1, a cylinder section support assembly 2 is provided on the upper part of the installation platform 1, an annular assembly frame 3 is provided on one side of the upper part of the installation platform 1, a circumferential moving assembly 4 is provided on the annular assembly frame 3, a circumferential limiting assembly 5 is provided on the annular assembly frame 3, a flange hole positioning assembly 6 is provided on one side of the upper part of the circumferential limiting assembly 5, and an end face leveling assembly 7 is provided on the upper part of the annular assembly frame 3. The above structure uses the cylindrical section support assembly 2 to provide stable support for the cylindrical sections to be assembled, and adjusts the support position to keep the cylindrical sections of different diameters at a predetermined axial height; the ring-shaped assembly frame 3 is set on one side of the upper part of the installation platform 1, and moves relative to the installation platform 1 along the cylindrical section axial direction through the circumferential moving assembly 4, so that the ring-shaped assembly frame 3 can drive the circumferential limiting assembly 5, the flange hole positioning assembly 6 and the end face leveling assembly 7 to move closer to or away from the flange simultaneously. During assembly, the cylindrical section is first placed on the cylindrical section support assembly 2, and the flange to be assembled is installed in the corresponding position on the ring assembly frame 3. Then, the ring assembly frame 3 is moved towards the end of the cylindrical section by the circumferential moving assembly 4, so that the flange gradually approaches the end face of the cylindrical section. The circumferential limiting assembly 5 cooperates with the outer circumferential surface of the flange to radially limit the flange and prevent the flange from radially shifting during the assembly process. The flange hole positioning assembly 6, through the positioning pin 643 cooperating with the flange bolt hole, positions the flange circumferentially and uses a floating positioning structure to automatically compensate for the slight positional deviation of the flange bolt hole, improving the accuracy of the positioning pin 643 entering the bolt hole. The end face leveling assembly 7 abuts against the flange end face and adjusts the different positions of the flange end face to keep the flange end face in a predetermined planar state relative to the end face of the cylindrical section, thereby correcting the tilt and local height deviation of the flange end face. Through the cooperation of the cylindrical section support assembly 2, the circumferential moving assembly 4, the circumferential limiting assembly 5, the flange hole positioning assembly 6, and the end face leveling assembly 7, the cylindrical section support, flange axial assembly, flange radial limiting, bolt hole circumferential positioning, and flange end face leveling can be completed in sequence. This reduces the process of repeated manual hoisting, measurement, and adjustment, improves the assembly efficiency and accuracy of the cylindrical section and flange, and provides a stable assembly state for subsequent positioning and welding.

[0026] In one embodiment, see Figure 1 and Figure 2 As shown, the cylindrical support assembly 2 includes a support mounting base 21, which is fixedly installed on the upper part of the installation platform 1. A support frame 22 is provided on the support mounting base 21, and each support frame 22 is provided with a roller adjustment assembly 23. The support mounting base 21 serves as the connection foundation between the cylindrical section support assembly 2 and the installation platform 1. It is used to stably install the support frame 22 and transfer the weight generated by the cylindrical section to the installation platform 1, thereby improving the overall load-bearing stability of the cylindrical section support assembly 2. The support frame 22 is set on the upper part of the support mounting base 21 and is used to install and support the roller adjustment assembly 23. The roller adjustment assembly 23 can adjust its position according to the outer diameter of the cylindrical section to be assembled, so that the roller adjustment assembly 23 is adapted to the outer circumferential surface of the cylindrical section, thereby providing stable support for cylindrical sections of different diameter specifications. In practice, two or more support mounting seats 21 can be set at intervals along the axial direction of the cylindrical section on the installation platform 1. Each support mounting seat 21 is fixedly equipped with a support frame 22, and a roller adjustment assembly 23 is set on each support frame 22. After the cylindrical section to be assembled is hoisted onto each support frame 22, the position of the roller adjustment assembly 23 is adjusted so that each roller adjustment assembly 23 rolls against the outer circumferential surface of the cylindrical section. The cylindrical section is stably supported on each roller adjustment assembly 23 under its own weight, and the axis of the cylindrical section is kept in line with the assembly direction of the ring-shaped assembly frame 3. When the flange moves towards the end of the cylindrical section and is assembled, the roller adjustment assembly 23 can stably support the cylindrical section and allow the cylindrical section to rotate within a small range according to the assembly needs, thereby facilitating the adjustment of the circumferential position between the cylindrical section and the flange. By cooperating with the support mounting base 21, support frame 22 and roller adjustment assembly 23, the stability and adaptability of the cylinder section support process can be improved, the friction between the outer surface of the cylinder section and the fixed support structure can be reduced, and the quick clamping and assembly of cylinder sections of different diameters can be facilitated.

[0027] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the roller adjustment assembly 23 includes two adjusting slides 231, both of which are slidably connected to the support frame 22. Two support rollers 232 are rotatably connected to their respective adjusting slides 231. Adjusting screws 233 are connected to one side of the upper part of each of the two adjusting slides 231 and are rotatably connected to the support frame 22. The support frame 22 has two parallel sliding guides, and the two adjusting slides 231 are slidably disposed on their respective sliding guides. The two adjusting screws 233 pass through the support frame 22 and are connected to their respective adjusting slides 231. After the cylindrical section is placed on the two support rollers 232, the two adjusting screws 233 are rotated according to the outer diameter of the cylindrical section, causing the two adjusting slides 231 to move along the support frame 22, thereby adjusting the distance between the two support rollers 232 and ensuring that the two support rollers 232 are stably in contact with different positions on the outer circumference of the cylindrical section. When supporting a larger diameter cylinder section, the two adjusting slides 231 are moved further apart, increasing the distance between the two supporting rollers 232; when supporting a smaller diameter cylinder section, the two adjusting slides 231 are moved closer together, decreasing the distance between the two supporting rollers 232. After adjustment, the threaded engagement between the adjusting screw 233 and the adjusting slide 231 forms a self-locking mechanism, keeping the adjusting slide 231 in the adjusted position and preventing the supporting rollers 232 from changing position under the weight of the cylinder section. During the assembly of the cylinder section and flange, two support rollers 232 support the cylinder section from both sides of its lower part, keeping the cylinder section stable. At the same time, the cylinder section can rotate within a small range around its own axis to cooperate with the flange hole positioning assembly 6 for circumferential position adjustment. Through the cooperation of two adjusting slides 231, two support rollers 232 and adjusting screws 233, the support height and support spacing of the cylinder section can be adaptively adjusted with a relatively simple structure, improving the applicability of the device to cylinder sections of different specifications.

[0028] In one embodiment, see Figure 1 , Figure 2 and Figure 3As shown, the circumferential moving assembly 4 includes two moving guide rails 41, which are arranged parallel to each other along the axial direction of the cylindrical section on the upper part of the mounting platform 1. Moving slide blocks 42 are slidably connected to the two moving guide rails 41, and a ring-shaped assembly frame 3 is fixedly connected between the two moving slide blocks 42. A drive cylinder 43 is provided on one side of the upper part of the mounting platform 1, and the extension end of the piston rod of the drive cylinder 43 is fixedly connected to the moving slide block 42. A moving guide wheel 44 is also provided between the moving slide block 42 and the moving guide rails 41. The two moving guide rails 41 serve as the ring-shaped assembly frame. 3. The guide base that moves along the axial direction of the cylinder section is used to restrict the movement direction of the movable slide 42, so that the two movable slides 42 can move synchronously in a straight line along the axial direction of the cylinder section, avoiding lateral offset or tilting of the ring-shaped assembly frame 3 during movement; the two movable slides 42 are respectively slidably set on the corresponding movable guide rails 41 and are fixedly connected to the ring-shaped assembly frame 3, so that the two movable slides 42 and the ring-shaped assembly frame 3 form an integral moving structure, thereby improving the support stability of the ring-shaped assembly frame 3 during axial movement. The drive cylinder 43 provides the driving force for the ring assembly frame 3 to move axially along the cylindrical section. When the piston rod of the drive cylinder 43 extends, the drive cylinder 43 pushes the corresponding movable slide 42 to move along the movable guide rail 41 toward the end of the cylindrical section. The two movable slides 42 drive the ring assembly frame 3 to move closer to the end of the cylindrical section simultaneously, so that the circumferential limiting component 5, flange hole positioning component 6 and end face leveling component 7 set on the ring assembly frame 3 move closer to the flange to be assembled, so as to complete the assembly, positioning and end face correction of the flange. When the piston rod of the drive cylinder 43 retracts, the drive cylinder 43 drives the movable slide 42 to move away from the end of the cylindrical section along the movable guide rail 41, and makes the ring assembly frame 3 reset synchronously, providing operating space for the subsequent loading and unloading of cylindrical sections or flanges.

[0029] In one embodiment, see Figure 1 and Figure 2As shown, the circumferential limiting assembly 5 includes a limiting mounting ring 51. Several limiting mounting seats 52 are provided on one side of the upper part of the limiting mounting ring 51. Each limiting mounting seat 52 is equipped with a radial adjusting block 53, and each radial adjusting block 53 is rotatably connected to a limiting roller 54. The several limiting mounting seats 52 can be evenly arranged along the circumference of the limiting mounting ring 51, preferably three or four. After the flange to be assembled is hoisted to the assembly position of the ring-shaped assembly frame 3, each radial adjusting block 53 is adjusted according to the outer diameter of the flange, causing each limiting roller 54 to move radially towards the outer circumferential surface of the flange until each limiting roller 54 slightly abuts against the outer circumferential surface of the flange. The multiple limiting rollers 54 form a multi-point circumferential limiting, keeping the outer circle of the flange located in the central area of ​​the limiting mounting ring 51. When the ring-shaped assembly frame 3 moves axially toward the end of the cylinder section under the drive of the circumferential moving component 4, each limiting roller 54 can move synchronously with the flange and continuously provide radial constraint on the outer circumferential surface of the flange to prevent the flange from shifting laterally during the movement. At the same time, since the limiting roller 54 and the outer circumferential surface of the flange are in rolling contact, when it is necessary to make a small-range circumferential adjustment of the flange so that the flange bolt holes correspond to the positioning pins 643, the flange can rotate smoothly relative to each limiting roller 54, thereby reducing the frictional resistance between the outer circumferential surface of the flange and the limiting structure.

[0030] Through the cooperation of the limiting mounting ring 51, the limiting mounting seat 52, the radial adjusting block 53 and the limiting roller 54, the flange can be radially adjusted according to different outer diameter specifications, and the flange can be stably circumferentially limited at multiple points. While ensuring the stability of the flange's radial position, it does not affect the flange's small-range circumferential rotation, thereby improving the positioning stability and assembly accuracy during the flange and cylinder assembly process.

[0031] In one embodiment, see Figure 1 , Figure 2 and Figure 4As shown, each of the limit mounting bases 52 is provided with a limit adjustment mechanism 55. The limit adjustment mechanism 55 includes an adjustment gear 551, which is rotatably connected to the limit mounting base 52. A movable rack 552 is provided on one side of the radial adjustment block 53. An adjustment handle 553 is fixedly connected to the upper side of the adjustment gear 551. The movable rack 552 is fixedly set on the side of the radial adjustment block 53 facing the adjustment gear 551. The arc-shaped extension direction of the movable rack 552 corresponds to the adjustment movement trajectory of the radial adjustment block 53. When it is necessary to limit the movement of flanges with different outer diameters, the operator rotates the adjusting handle 553. The adjusting handle 553 drives the adjusting gear 551 to rotate, which in turn drives the moving rack 552 to move in a predetermined direction. This causes the radial adjusting block 53 to move synchronously towards or away from the outer circumference of the flange, gradually bringing the limiting roller 54 into contact with the outer circumference of the flange. Once all the limiting rollers 54 are in slight contact with the outer circumference of the flange, the operator stops rotating the adjusting handle 553, thus completing the radial limiting of the flange. By adjusting the corresponding radial adjusting blocks 53 through multiple limiting adjusting mechanisms 55, multiple limiting rollers 54 can form multiple points of uniform contact with the outer circumference of the flange, keeping the flange in the center position of the limiting mounting ring 51 and reducing the possibility of radial displacement of the flange during assembly.

[0032] In one embodiment, see Figure 1 , Figure 4 and Figure 5As shown, the flange hole positioning assembly 6 includes a positioning mounting ring 61, which is mounted on the annular assembly frame 3. Several positioning cylinders 62 are mounted on one side of the upper part of the positioning mounting ring 61. The telescopic end of the positioning cylinder 62 is fixedly connected to a positioning moving seat 63, which is slidably connected to the positioning mounting ring 61. A floating positioning mechanism 64 is mounted on the positioning moving seat 63. After the assembled flange is initially limited in outer circle by the circumferential limiting assembly 5, the positioning cylinder 62 is activated. The telescopic end of the positioning cylinder 62 pushes the positioning moving seat 63 to move along the annular assembly frame 3 toward the flange. The positioning moving seat 63 drives the floating positioning mechanism 64 to move closer to the flange bolt hole simultaneously. When the floating positioning mechanism 64 corresponds to the flange bolt hole, the positioning pin 643 on the floating positioning mechanism 64 enters the flange bolt hole, thereby positioning the flange circumferentially. When there is a slight lateral or vertical positional deviation between the positioning pin 643 and the flange bolt hole, the floating positioning mechanism 64 can perform a slight positional compensation under the guidance of the flange bolt hole opening, so that the positioning pin 643 automatically adjusts to the position corresponding to the flange bolt hole and enters the flange bolt hole, thereby reducing the frequency of manual repeated adjustment of the flange circumferential position. After the flange hole positioning and the end face alignment of the cylinder section and the flange are completed, positioning welding can be performed. After the positioning welding is completed, the positioning cylinder 62 is controlled to retract, and the positioning cylinder 62 drives the positioning moving seat 63 and the floating positioning mechanism 64 to move away from the flange, so that the positioning pin 643 exits the flange bolt hole and the flange hole positioning assembly 6 returns to the initial position. Through the cooperation of the positioning installation ring 61, positioning cylinder 62, positioning moving seat 63 and floating positioning mechanism 64, the positioning mechanism can automatically move forward and backward along the axial direction of the cylinder section. The floating positioning mechanism 64 can automatically compensate for the slight positional deviation of the flange bolt holes. Based on the radial limit of the flange outer circle by the circumferential limit component 5, the positioning accuracy and assembly efficiency of the flange circumferential installation position are further improved, while reducing the manual hole finding and repeated adjustment process.

[0033] In one embodiment, see Figure 1 , Figure 4 and Figure 5As shown, the floating positioning mechanism 64 includes a floating groove 641, which is disposed on one side of the positioning moving seat 63. A floating positioning block 642 is movably disposed in the floating groove 641. A positioning pin 643 is fixedly disposed on one side of the floating positioning block 642. A tapered guide part 6431 is provided at the front end of the positioning pin 643. A plurality of return springs 644 are disposed between the floating positioning block 642 and the floating groove 641. The floating groove 641 is opened on the side of the positioning moving seat 63 facing the flange. The horizontal and vertical dimensions of the floating groove 641 are larger than the corresponding dimensions of the floating positioning block 642, so that the floating positioning block 642 can generate a predetermined range of horizontal and vertical micro-displacement within the floating groove 641. A floating positioning block 642 is disposed within a floating groove 641 and is elastically connected to the inner wall of the floating groove 641 via several return springs 644. These return springs 644 can be respectively disposed on the upper side, lower side, and opposite sides of the floating positioning block 642, ensuring that the floating positioning block 642 experiences a relatively balanced elastic force in all directions. A positioning pin 643 is fixedly disposed on the side of the floating positioning block 642 facing the flange. The front end of the positioning pin 643 is machined into a tapered guide portion 6431, and the rear side of the positioning pin 643 is provided with a cylindrical positioning section adapted to the flange bolt holes. After the flange completes the initial outer circle limitation by the circumferential limiting component 5, the positioning cylinder 62 pushes the positioning moving seat 63 to move towards the flange. The positioning moving seat 63 drives the floating positioning block 642 and the positioning pin 643 to move towards the flange bolt hole simultaneously. When there is no positional deviation between the positioning pin 643 and the flange bolt hole, the tapered guide part 6431 directly enters the flange bolt hole, and the cylindrical positioning section behind the positioning pin 643 then enters the flange bolt hole to complete the flange hole positioning. When there is a slight lateral or vertical positional deviation between the locating pin 643 and the flange bolt hole, the tapered guide 6431 first contacts the edge of the flange bolt hole opening. As the locating moving seat 63 continues to move towards the flange, the edge of the flange bolt hole opening generates a lateral guiding force on the tapered guide 6431. This lateral guiding force drives the floating locating block 642 to overcome the elastic force of the corresponding return spring 644 and move slightly towards the center of the flange bolt hole within the floating groove 641, so that the locating pin 643 automatically adjusts to the position corresponding to the flange bolt hole. Subsequently, the tapered guide 6431 enters the flange bolt hole, and the cylindrical locating section behind the locating pin 643 continues to enter the flange bolt hole, thereby completing the automatic compensation of the flange hole position and the circumferential positioning of the flange. After the assembly and positioning welding of the cylinder section and flange are completed, the positioning cylinder 62 drives the positioning moving seat 63 to retract, causing the positioning pin 643 to exit the flange bolt hole. Under the combined action of several return springs 644, the floating positioning block 642 automatically returns to the initial position of the floating groove 641, so as to carry out the assembly operation of the next set of cylinder sections and flanges.

[0034] In one embodiment, see Figure 1 and Figure 6 As shown, four return springs 644 are provided, each positioned on one side of the floating positioning block 642. The positioning pin 643 also includes a cylindrical positioning part 6432 located behind the tapered guide part 6431. The outer diameter of the cylindrical positioning part 6432 is smaller than the inner diameter of the flange bolt hole. The four return springs 644 are respectively positioned on opposite sides of the floating positioning block 642. For example, two return springs 644 can be provided on the upper and lower sides of the floating positioning block 642, or two return springs 644 can be provided on the left and right sides of the floating positioning block 642. One end of each return spring 644 is connected to the floating positioning block 642, and the other end is connected to the inner wall of the floating groove 641. The four return springs 644 elastically limit the floating positioning block 642, keeping it in the middle position of the floating groove 641 under normal conditions.

[0035] During flange assembly, the positioning cylinder 62 pushes the positioning moving seat 63 towards the flange, and the positioning pin 643 approaches the flange bolt hole. When there is a certain deviation between the center of the positioning pin 643 and the center of the flange bolt hole, the tapered guide 6431 first contacts the edge of the flange bolt hole. Due to the gradually increasing outer diameter of the tapered guide 6431, as the positioning pin 643 continues to move forward, the edge of the hole exerts a lateral squeezing force on the tapered guide 6431, causing the floating positioning block 642 to overcome the elastic force of the corresponding position return spring 644 and generate a slight lateral or vertical displacement in the floating groove 641. This causes the positioning pin 643 to automatically shift towards the center of the flange bolt hole, achieving automatic compensation for the hole position deviation.

[0036] In one embodiment, see Figure 1 and Figure 6 As shown, the end face leveling assembly 7 includes a leveling mounting ring 71, which is mounted on the ring-shaped assembly frame 3. The leveling mounting ring 71 is provided with a plurality of leveling mounting seats 72, and each leveling mounting seat 72 is rotatably connected to a leveling adjusting rod 73. The leveling adjusting rod 73 is provided with a leveling top block 74, and the leveling top block 74 is also threadedly connected to a locking nut 75.

[0037] The leveling mounting ring 71 is used to install multiple leveling mounting seats 72, and the leveling mounting seats 72 are distributed along the circumference of the flange end face; the leveling mounting seats 72 are used to support and guide the leveling adjusting rod 73; the leveling adjusting rod 73 is used to apply axial adjustment force to the flange end face, and by rotating the leveling adjusting rod 73, it causes displacement along its own axis, thereby driving the leveling top block 74 to move closer to or away from the flange end face; the leveling top block 74 is used to abut against the flange end face, and by independently pressing different positions on the flange end face, it corrects the inclination, local height difference and uneven assembly gap of the flange end face; the locking nut 75 is used to lock the position of the leveling adjusting rod 73 after leveling is completed, so as to prevent the leveling adjusting rod 73 from loosening during subsequent welding.

[0038] A leveling mounting ring 71 is fixedly installed on the side of the ring-shaped assembly frame 3 facing the flange. Three or four leveling mounting seats 72 are evenly arranged on the leveling mounting ring 71 along the circumferential direction, with each leveling mounting seat 72 corresponding to a different position on the flange end face. A leveling adjusting rod 73 passes through and is threadedly connected to the corresponding leveling mounting seat 72. A leveling top block 74 is fixedly installed at the end of the leveling adjusting rod 73 facing the flange. After the cylinder section and the flange are initially assembled, each leveling top block 74 is kept at a certain distance from the flange end face. Then, the leveling adjusting rod 73 is adjusted according to the actual gap at different positions on the flange end face. When the flange end face at a certain position deviates outward, rotate the corresponding leveling adjustment rod 73 to move the leveling top block 74 towards the flange end face and apply pressure. By adjusting the leveling adjustment rods 73 at different positions, the flange end face gradually approaches the predetermined leveling position, thereby making the flange end face flatter and the assembly gap between the flange and the cylinder section more uniform. After the flange end face is adjusted to meet the assembly requirements, tighten the lock nut 75 so that it abuts against the leveling mounting base 72, axially locking the leveling adjustment rod 73. This maintains the pressure of the leveling top block 74 on the flange end face, preventing changes in the leveling position due to vibration or welding heat deformation during the positioning welding process. After completing the positioning welding, loosen the lock nut 75 and rotate the leveling adjustment rod 73 in the opposite direction to separate the leveling top block 74 from the flange end face, allowing the ring assembly frame 3 to be removed.

[0039] Specifically, a method for assembling an auxiliary device for assembling a cylinder section and a flange includes the following steps: S1. Cylindrical section support and position adjustment: Hoist the cylindrical section to be assembled onto the cylindrical section support assembly 2 on the upper part of the installation platform 1, so that the outer circumferential surface of the cylindrical section is supported by the roller adjustment assembly 23 on the support frame 22. Adjust the position of the roller adjustment assembly 23 according to the outer diameter of the cylindrical section, so that each roller adjustment assembly 23 is in stable contact with the outer circumferential surface of the cylindrical section, and the axis of the cylindrical section corresponds to the moving direction of the ring assembly frame 3, thereby completing the support and initial position adjustment of the cylindrical section. S2. Flange loading and circumferential limiting: The flange to be assembled is hoisted to the assembly position of the ring assembly frame 3, and the position of each radial adjusting block 53 is adjusted by the limiting adjustment mechanism 55 set on the limiting installation ring 51, so that each limiting roller 54 rolls and abuts against the outer circumferential surface of the flange. The flange outer circle is limited at multiple points by multiple limiting rollers 54, so that the flange is kept in the predetermined assembly position of the ring assembly frame 3, while retaining the activity space for small-range circumferential adjustment of the flange. S3. Flange axial movement and preliminary assembly: Start the drive cylinder 43. The piston rod of the drive cylinder 43 extends and pushes the moving slide 42 to move along the two moving guide rails 41 toward the end of the cylinder section. The two moving slides 42 drive the ring assembly frame 3 and the flange to move synchronously along the cylinder section axially, so that the flange end face gradually approaches the cylinder section end face until the flange end face and the cylinder section end face reach the predetermined assembly gap, completing the preliminary assembly of the cylinder section and the flange. S4. Automatic Flange Hole Positioning: The positioning cylinder 62 is activated, pushing the positioning moving seat 63 towards the flange. This causes the positioning moving seat 63 to drive the floating positioning mechanism 64 and the positioning pin 643 to move synchronously towards the flange bolt hole. When there is a slight lateral or vertical positional deviation between the positioning pin 643 and the flange bolt hole, the tapered guide part 6431 at the front end of the positioning pin 643 contacts the edge of the flange bolt hole opening. The edge of the flange bolt hole opening guides the tapered guide part 6431, causing the floating positioning block 642 to overcome the elastic force of the return spring 644 and generate a slight displacement within the floating groove 641. This causes the positioning pin 643 to automatically move towards the center of the flange bolt hole. Once the positioning pin 643 is aligned with the flange bolt hole, it enters the flange bolt hole, completing the circumferential positioning of the flange. S5. Flange end face leveling: After the flange hole positioning is completed, rotate the leveling adjustment rods 73 set on each leveling mounting ring 71 respectively, so that each leveling adjustment rod 73 drives the corresponding leveling top block 74 to move along the cylinder section axially and abut against different positions of the flange end face; according to the assembly gap between the flange end face and the cylinder section end face, make slight adjustments to the leveling adjustment rods 73 at different positions, so that each position of the flange end face is gradually adjusted to the predetermined plane state, eliminating the tilt and local height deviation of the flange end face, and maintaining the predetermined parallelism and assembly gap between the flange end face and the cylinder section end face; after leveling is completed, tighten the locking nut 75, so that the locking nut 75 abuts against the leveling mounting ring 71, locks the leveling adjustment rod 73, and maintains the leveled state of the flange end face; S6. Assembly Inspection and Positioning Welding: Check the coaxiality between the cylinder section and the flange, the parallelism of the flange end face, the assembly gap and the position of the flange bolt holes. After confirming that all assembly parameters meet the process requirements, perform positioning welding at the connection position of the cylinder section and the flange to keep the cylinder section and the flange in a stable assembly state. S7. Positioning Mechanism Reset and Workpiece Removal: After the positioning welding is completed, control the positioning cylinder 62 to retract, so that the positioning moving seat 63 drives the floating positioning mechanism 64 and the positioning pin 643 to exit the flange bolt hole. The floating positioning block 642 returns to the initial position in the floating groove 641 under the action of the return spring 644. Then, control the drive cylinder 43 to retract, so that the moving slide 42 drives the ring assembly frame 3 to move away from the end of the cylinder section along the moving guide rail 41, and release the limit rollers 54 from the outer circumference of the flange. Finally, the cylinder section and flange assembly that has completed the assembly and positioning welding are lifted off the installation platform 1, completing one cylinder section and flange assembly operation.

[0040] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An auxiliary device for assembling a cylinder section and a flange, comprising an installation platform (1), characterized in that, The installation platform (1) is provided with a cylindrical support assembly (2) on the upper part, and a ring-shaped assembly frame (3) is provided on one side of the upper part of the installation platform (1). A circumferential moving assembly (4) is provided on the ring-shaped assembly frame (3). A circumferential limiting assembly (5) is provided on the ring-shaped assembly frame (3). A flange hole positioning assembly (6) is provided on one side of the upper part of the circumferential limiting assembly (5). An end face leveling assembly (7) is provided on the upper part of the ring-shaped assembly frame (3).

2. The auxiliary device for assembling a cylinder section and a flange according to claim 1, characterized in that, The cylindrical support assembly (2) includes a support mounting base (21), which is fixedly installed on the upper part of the installation platform (1). A support frame (22) is provided on the support mounting base (21), and a roller adjustment assembly (23) is provided on each support frame (22).

3. The auxiliary device for assembling a cylinder section and a flange according to claim 2, characterized in that, The roller adjustment assembly (23) includes two adjustment slides (231), both of which are slidably connected to the support frame (22). Each of the two adjustment slides (231) is provided with a support roller (232). An adjustment screw (233) is connected to one side of the upper part of the two adjustment slides (231), and the adjustment screw (233) is rotatably connected to the support frame (22).

4. The auxiliary device for assembling a cylinder section and a flange according to claim 1, characterized in that, The circumferential moving assembly (4) includes two moving guide rails (41). The two moving guide rails (41) are arranged parallel to each other along the axial direction of the cylinder section on the upper part of the mounting platform (1). Moving slides (42) are slidably connected on the two moving guide rails (41). A ring-shaped assembly frame (3) is fixedly connected between the two moving slides (42). A drive cylinder (43) is provided on one side of the upper part of the mounting platform (1). The extension end of the piston rod of the drive cylinder (43) is fixedly connected to the moving slide (42). Moving guide wheels (44) are also provided between the moving slide (42) and the moving guide rails (41).

5. The auxiliary device for assembling a cylinder section and a flange according to claim 4, characterized in that, The circumferential limiting component (5) includes a limiting mounting ring (51). A plurality of limiting mounting seats (52) are provided on one side of the upper part of the limiting mounting ring (51). A radial adjusting block (53) is slidably connected to each limiting mounting seat (52). A limiting roller (54) is rotatably connected to each radial adjusting block (53).

6. The auxiliary device for assembling a cylinder section and a flange according to claim 5, characterized in that, Each of the limiting mounting bases (52) is provided with a limiting adjustment mechanism (55). The limiting adjustment mechanism (55) includes an adjustment gear (551), which is rotatably connected to the limiting mounting base (52). A movable rack (552) is provided on one side of the radial adjustment block (53), and an adjustment handle (553) is fixedly connected to the upper side of the adjustment gear (551).

7. The auxiliary device for assembling a cylinder section and a flange according to claim 1, characterized in that, The flange hole positioning assembly (6) includes a positioning mounting ring (61), which is set on the ring-shaped assembly frame (3). A plurality of positioning cylinders (62) are provided on one side of the upper part of the positioning mounting ring (61). The telescopic end of the positioning cylinder (62) is fixedly connected to a positioning moving seat (63). The positioning moving seat (63) is slidably connected to the positioning mounting ring (61). A floating positioning mechanism (64) is provided on the positioning moving seat (63).

8. The auxiliary device for assembling a cylinder section and a flange according to claim 7, characterized in that, The floating positioning mechanism (64) includes a floating groove (641), which is located on one side of the positioning moving seat (63). A floating positioning block (642) is movably arranged in the floating groove (641). A positioning pin (643) is fixedly arranged on one side of the floating positioning block (642). A tapered guide part (6431) is provided at the front end of the positioning pin (643). A plurality of return springs (644) are arranged between the floating positioning block (642) and the floating groove (641).

9. The auxiliary device for assembling a cylinder section and a flange according to claim 8, characterized in that, Four reset springs (644) are provided, and the four reset springs (644) are respectively provided on both sides of the floating positioning block (642). The positioning pin (643) also includes a cylindrical positioning part (6432) provided on the rear side of the tapered guide part (6431). The outer diameter of the cylindrical positioning part (6432) is smaller than the inner diameter of the flange bolt hole.

10. The auxiliary device for assembling a cylinder section and a flange according to claim 1, characterized in that, The end face leveling assembly (7) includes a leveling mounting ring (71), which is set on the ring-shaped assembly frame (3). The leveling mounting ring (71) is provided with a plurality of leveling mounting seats (72), and each leveling mounting seat (72) is rotatably connected with a leveling adjusting rod (73). The leveling adjusting rod (73) is provided with a leveling top block (74), and the leveling top block (74) is also threadedly connected with a locking nut (75).

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