Adjustable flange assembly with torsion retention function and torsion retention method

Abstract

The present invention discloses an adjustable flange assembly with a torsion retention function and a torsion retention method, which belongs to the technical field of horizontal riveting jigs, and comprises: a fixed flange assembly, a movable flange assembly, a rotating power assembly, a brake, and a docking mechanism; the fixed flange assembly and the movable flange assembly have the same structure and are arranged axially opposite to each other, and both comprise a rotating shaft and a flange sleeved on the rotating shaft; the rotating shaft is connected to a brake, and the rotating shaft of the fixed flange assembly is also connected to a rotating power assembly; the docking mechanism comprises a first telescopic shaft assembly and a second telescopic shaft assembly arranged axially opposite to each other; the first telescopic shaft assembly and the second telescopic shaft assembly are respectively slidably arranged in the rotating shafts of the fixed flange assembly and the movable flange assembly. The two flanges in the flange assembly of the present invention can rotate synchronously, thereby adjusting the position of the large-diameter cylindrical rivet and maintaining the torsion of the two flanges within an acceptable range after rotation.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal riveting jigs, and in particular to an adjustable flange assembly with a torsion maintaining function and a torsion maintaining method. Background Art

[0002] Large-diameter, circular-shaped riveted parts are used in the aerospace field. They require horizontal riveting jigs for assembly. Figure 1 As shown, the foundation is cast from reinforced concrete, and then the ground rails are laid. To ensure the stability of the ground rails, another layer of reinforced concrete is cast to bury the lower half of the ground rails. The ground rails are connected to fixed flanges and movable flanges via a base. The fixed flange is fixed to the foundation via the base, and the movable flange can slide on the ground rails along with the base. When assembling a large-diameter cylindrical riveted part, first place four 1 / 4 riveted parts between two flanges. Then, on a horizontal riveting jig, rivet the fixed beams at the edge of each 1 / 4 riveted part together to assemble the large-diameter cylindrical riveted part.

[0003] However, the flange of the traditional horizontal riveting frame cannot be rotated. When assembling the large-diameter cylindrical riveted parts, due to the large diameter of the large-diameter cylindrical riveted parts, it is inconvenient for operators to assemble the top of the large-diameter cylindrical riveted parts. Therefore, they can only assemble four 1 / 4 riveted parts first, and then rivet the edge fixing beams of the four 1 / 4 riveted parts to each other to assemble the large-diameter cylindrical riveted parts. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable flange assembly with a torsion retention function and a torsion retention method to solve the problem that the flange of the existing horizontal riveting frame cannot be rotated, which is inconvenient for directly assembling large-diameter cylindrical riveted parts.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] An adjustable flange assembly with a torsion retention function, comprising: a fixed flange assembly, a movable flange assembly, a rotating power assembly, a brake, and a docking mechanism;

[0007] The fixed flange assembly and the movable flange assembly have the same structure and are arranged opposite to each other in the axial direction. Both include a rotating shaft and a flange sleeved on the rotating shaft. The rotating shaft is connected to a brake, and the rotating shaft of the fixed flange assembly is also connected to a rotating power assembly.

[0008] The docking mechanism includes a first telescopic shaft assembly and a second telescopic shaft assembly which are axially opposite to each other; the first telescopic shaft assembly and the second telescopic shaft assembly are respectively slidably arranged in the rotating shafts of the fixed flange assembly and the movable flange assembly;

[0009] The first telescopic shaft assembly and the second telescopic shaft assembly extend from the corresponding rotating shafts respectively and then dock together, so that the flanges of the fixed flange assembly and the movable flange assembly are linked to maintain the torsion between the flanges.

[0010] The two flanges in the flange set of the present invention are connected to corresponding rotating shafts, so that the two flanges can be rotated, thereby adjusting the position of the large-diameter cylindrical rivet. When assembling the large-diameter cylindrical rivet, the top side of the large-diameter cylindrical rivet can be rotated to a position convenient for riveting, so that the large-diameter cylindrical rivet can be directly assembled, shortening the assembly process. At the same time, the rotating shafts of the two flanges can be connected together through a docking mechanism to achieve linkage between the two flanges, so that the torsion degree of the two flanges after rotation (the offset angle between the line connecting the two corresponding points of the two flanges and the center axis of the flange is the torsion degree) can be kept within an acceptable range.

[0011] Furthermore, the first telescopic shaft assembly and the second telescopic shaft assembly each include a cylinder, a support sleeve, a telescopic shaft, and a connecting sleeve; the telescopic shaft includes a connecting end and a free end; one end of the cylinder is fixedly connected to the corresponding rotating shaft, the other end of the cylinder extends from the free end into the telescopic shaft and is connected to the connecting end, the support sleeve is fixedly connected to the corresponding rotating shaft; the telescopic shaft passes through the support sleeve and slidably cooperates with the support sleeve, and the connecting end is connected to the connecting sleeve; the connecting sleeves of the first telescopic shaft assembly and the second telescopic shaft assembly are arranged relative to each other and match each other;

[0012] The connecting sleeves of the first telescopic shaft assembly and the second telescopic shaft assembly move closer to or farther away from each other under the action of the corresponding cylinders, thereby achieving docking or separation between the connecting sleeves.

[0013] The first telescopic shaft assembly and the second telescopic shaft assembly of the present invention are respectively connected to the rotating shafts of the two flanges of the horizontal riveted frame. After the first telescopic shaft assembly and the second telescopic shaft assembly are docked, the two flanges are connected together to achieve the linkage of the two flanges, so as to ensure the coaxiality of the two flanges and ensure that the torsional deviation is within the qualified range.

[0014] At the same time, the first telescopic shaft assembly and the second telescopic shaft assembly can be accommodated in the rotating shafts of the two flanges. When not docked, the first telescopic shaft assembly and the second telescopic shaft assembly are respectively hidden in the rotating shafts of the two flanges, and will not hinder the assembly of large-diameter cylindrical rivets. When docking is required, the first telescopic assembly and the second telescopic assembly are respectively extended from the rotating shafts of the two flanges and connected to achieve linkage adjustment.

[0015] Furthermore, the above-mentioned cylinder includes a cylinder body and a push rod; one end of the cylinder body is provided with a tailstock connected to the corresponding rotating shaft, and the push rod extends from the other end of the cylinder body and is connected to the connecting end.

[0016] Furthermore, the outer side of the telescopic shaft is provided with a sliding groove with sealed ends, the end of the sliding groove close to the free end is connected to a limiting block, and is sealed by the limiting block, and the inner side of the support sleeve is provided with a slider that cooperates with the sliding groove.

[0017] Furthermore, both ends of the support sleeve are provided with centering rings for connecting with corresponding rotating shafts, and the centering rings are sleeved on the outside of the telescopic shaft and slidably cooperate with the telescopic shaft.

[0018] Furthermore, the above-mentioned rotating power assembly includes a bracket, a power motor arranged on the bracket, a driving sprocket connected to the power motor, and a driven sprocket connected to the driving sprocket through a chain; the driven sprocket is sleeved on the corresponding rotating shaft.

[0019] Furthermore, the above-mentioned rotating power assembly also includes a vertical shaft arranged on the bracket, a tensioning adjustment block threadedly connected to the vertical shaft, a tensioning rocker arm sleeved on the vertical shaft and located on the bottom side of the tensioning adjustment block, and a tensioning wheel connected to the tensioning rocker arm and in contact with the inner side of the chain; a tensioning spring is also sleeved on the vertical shaft, and the tensioning spring is located between the bracket and the tensioning rocker arm.

[0020] Furthermore, the above also includes a circumferential positioning pointer; a flange circumferential positioning ring is provided on the back side of the flange, and the flange circumferential positioning ring is provided with a scale matching the circumferential positioning pointer.

[0021] The axial positioning pointer of the present invention is installed on other components of the horizontal riveting frame to indicate the scale on the circumferential positioning pointer, ensuring that the positions of the two flanges correspond to each other before the large-diameter cylindrical riveted part is assembled.

[0022] A method for maintaining the torsion of the adjustable flange assembly with the torsion maintaining function is provided, characterized in that it comprises the following steps:

[0023] S1: Use a laser locator to adjust the line connecting the corresponding positions of the two flanges to be parallel to the base surface;

[0024] S2: releasing all brakes on the rotating shafts, and then extending the first telescopic shaft assembly and the second telescopic shaft assembly from the corresponding rotating shafts until they touch and connect together, and then resuming all brakes on the rotating shafts;

[0025] S3: When assembling large-diameter cylindrical rivets, release all brakes on the rotating shaft, and rotate the fixed flange assembly under the drive of the rotating power assembly, thereby driving the movable flange assembly to operate in conjunction, so that the torsion between the fixed flange assembly and the movable flange assembly remains within the qualified range.

[0026] Furthermore, in the above step S1, the circumferential positioning pointers corresponding to the two flanges are also pointed to the same scale of the corresponding flange circumferential positioning ring;

[0027] In step S3, during the assembly of the large-diameter cylindrical rivet, if the circumferential positioning pointers corresponding to the two flanges do not point to the same scale of the corresponding flange circumferential positioning ring, all brakes on the rotating shaft are released, and the flange of the flange assembly is manually rotated to make the circumferential positioning pointers corresponding to the two flanges point to the same scale of the corresponding flange circumferential positioning ring. Then, all brakes on the rotating shaft are restored and the large-diameter cylindrical rivet is assembled.

[0028] The two flanges of the flange assembly of the present invention can be linked to each other. During the entire operation process, it is only necessary to align the two flanges through a laser locator and connect them through the first telescopic shaft assembly and the second telescopic shaft assembly to ensure that the torsion of the two flanges after rotation is maintained within a qualified range. In addition, during the assembly process of large-diameter cylindrical rivet parts, the flanges of the flange assembly can be manually fine-tuned to eliminate errors caused by mechanical rotation and reduce the torsion between the two flanges.

[0029] The present invention has the following beneficial effects:

[0030] (1) The two flanges in the flange assembly of the present invention can be rotated, thereby adjusting the position of the large-diameter cylindrical rivet, facilitating the direct assembly of the large-diameter cylindrical rivet, and reducing the assembly process. At the same time, the rotating shafts of the two flanges can be connected together through a docking mechanism to achieve linkage between the two flanges, so that the torsion of the two flanges after rotation can be kept within an acceptable range.

[0031] (2) The first telescopic shaft assembly and the second telescopic shaft assembly of the present invention are respectively connected to the rotating shafts of the two flanges of the horizontal riveted frame. After the first telescopic shaft assembly and the second telescopic shaft assembly are docked, the two flanges are connected together to realize the linkage of the two flanges, so as to ensure the coaxiality of the two flanges and ensure that the torsional deviation is within the qualified range.

[0032] (3) The first telescopic shaft assembly and the second telescopic shaft assembly of the present invention can be accommodated in the rotating shafts of the two flanges. When not docked, the first telescopic shaft assembly and the second telescopic shaft assembly are respectively hidden in the rotating shafts of the two flanges, and will not hinder the assembly of the large-diameter cylindrical rivet. When docking is required, the first telescopic assembly and the second telescopic assembly are respectively extended from the rotating shafts of the two flanges and connected, thereby realizing linkage adjustment.

[0033] (4) The two flanges of the flange assembly of the present invention can be linked to each other. During the entire operation, it is only necessary to align the two flanges through a laser locator and connect them through the first telescopic shaft assembly and the second telescopic shaft assembly to keep the torsion of the two flanges within the qualified range after rotation. In addition, during the assembly process of large-diameter cylindrical rivets, the flanges of the flange assembly can be manually fine-tuned to eliminate the error caused by mechanical rotation and reduce the torsion between the two flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural diagram of a traditional horizontal riveting jig;

[0035] Figure 2 A schematic structural diagram of the adjustable flange assembly with a torsion retention function according to the present invention;

[0036] Figure 3 It is a structural schematic diagram of the flange of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the docking structure of the present invention;

[0038] Figure 5 It is a structural schematic diagram of the first telescopic shaft assembly of the present invention;

[0039] Figure 6 Schematic diagram of the exploded structure of the first telescopic shaft assembly of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the telescopic shaft of the present invention;

[0041] Figure 8 It is a structural schematic diagram of the rotary power assembly of the present invention.

[0042] In the figure: 21-rotating shaft; 23-flange; 24-docking mechanism; 26-rotating power assembly; 29-brake; 201-fixed flange assembly; 202-movable flange assembly; 203-circumferential positioning pointer; 204-chain; 234-flange circumferential positioning ring; 241-first telescopic shaft assembly; 242-second telescopic shaft assembly; 243-cylinder; 244-support sleeve; 245-telescopic shaft; 246-connecting sleeve; 247-pair Middle ring; 248-cylinder push block; 2431-cylinder body; 2432-push rod; 2433-tailstock; 2441-slider; 2451-connecting end; 2452-free end; 2453-slide; 2454-limiting block; 261-bracket; 262-power motor; 263-driving sprocket; 264-driven sprocket; 265-vertical shaft; 266-tensioning adjustment block; 267-tensioning rocker arm; 268-tensioning pulley; 269-tensioning spring. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] Example 1

[0045] Please refer to Figure 2 This embodiment provides an adjustable flange assembly with a torsion retention function, including: a fixed flange assembly 201, a movable flange assembly 202, a circumferential positioning pointer 203, a rotating power assembly 26, a brake 29, and a docking mechanism 24. The fixed flange assembly 201 and the movable flange assembly 202 can be connected through the docking mechanism 24. The fixed flange assembly 201 and the movable flange assembly 202 are respectively connected to the brake 29, and the fixed flange assembly 201 is also connected to the rotating power assembly 26. After the fixed flange assembly 201 and the movable flange assembly 202 are connected through the docking mechanism 24, they are linked by the rotating power assembly 26. Therefore, when assembling a large-diameter cylindrical rivet, the position of the large-diameter cylindrical rivet can be adjusted, which facilitates the assembly of the large-diameter cylindrical rivet. In addition, the linkage between the fixed flange assembly 201 and the movable flange assembly 202 can keep the torsion of the flanges 23 of the fixed flange assembly 201 and the movable flange assembly 202 within an acceptable range after rotation.

[0046] Please refer to Figure 2 and Figure 3 The fixed flange assembly 201 and the movable flange assembly 202 have the same structure and are arranged axially opposite to each other. They both include a rotating shaft 21 and a flange 23 mounted on the rotating shaft 21. The rotating shaft 21 is connected to a brake 29. The rotating shaft 21 of the fixed flange assembly 201 is connected to a rotating power assembly 26. In this embodiment, the rotating shafts 21 of the fixed flange assembly 201 and the movable flange assembly 202 are arranged opposite to each other and their axes coincide. The front faces of the flanges 23 of the fixed flange assembly 201 and the movable flange assembly 202 are opposite to each other, and the back faces are both provided with flange circumferential positioning rings 234. The flange circumferential positioning rings 234 are provided with scales, and each flange circumferential positioning ring 234 corresponds to at least one circumferential positioning pointer 203. The circumferential positioning pointer 203 is fixedly mounted on other structures of the horizontal riveting jig and points to the corresponding scale. When the flange 23 rotates, the circumferential positioning pointer 203 indicates the rotation position of the flange 23 so that the corresponding positions of the two flanges 23 can be relative to each other, ensuring that the large-diameter cylindrical rivet can be accurately installed on the two flanges 23.

[0047] In this embodiment, the brake 29 is an enveloping electromagnetic brake, and its structure and working principle are prior art and will not be described in detail here.

[0048] Please refer to Figure 4 The docking mechanism 24 includes a first telescopic shaft assembly 241 and a second telescopic shaft assembly 242 that are axially opposed to each other, i.e., the axes of the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 coincide with each other. The first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 are respectively installed in the rotating shafts 21 of the fixed flange assembly 201 and the movable flange assembly 202. When not extended, the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 are stored in the corresponding rotating shafts 21. When extended, they extend from the corresponding rotating shafts 21 and dock together, allowing the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 to work in conjunction with each other to ensure that the torsion degree of the flange 23 is within the acceptable range when it rotates.

[0049] Please refer to Figures 5 to 7 The structures of the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 are consistent. In this embodiment, only the structure of the first telescopic shaft assembly 241 is described.

[0050] The first telescopic shaft assembly 241 includes a cylinder 243, a support sleeve 244, a telescopic shaft 245, and a connecting sleeve 246. The cylinder 243 comprises a cylinder body 2431 and a push rod 2432. The push rod 2432 extends from the cylinder body 2431. Under the action of air pressure, the push rod 2432 can slide with the cylinder body 2431, thereby extending or retracting the push rod 2432. The end of the cylinder body 2431 away from the push rod 2432 is bolted to a tailstock 2433. The tailstock 2433 is bolted to the corresponding rotating shaft 21, securing the cylinder 2433 within the corresponding rotating shaft 21.

[0051] A connecting ring is provided at each end of the support sleeve 244. The connecting ring is cold-installed into the interior of the rotating shaft 21 corresponding to the flange 23. In this embodiment, the support sleeve 244 and the tailstock 2433 are respectively mounted on the respective ends of the rotating shaft 21. A centering ring 247 is connected to each end of the support sleeve 244. Specifically, the centering ring 247 is bolted to the corresponding connecting ring. A slider 2441 is provided on the inner side of the support sleeve 244, extending in the axial direction.

[0052] The telescopic shaft 245 includes a connecting end 2451 and a free end 2452. A sliding groove 2453 is provided on the outer side of the telescopic shaft 245. When the telescopic shaft 245 passes through the support sleeve 244, the sliding groove 2453 of the telescopic shaft 245 engages with the slider 2441, limiting the circumferential rotation between the telescopic shaft 245 and the support sleeve 244. Furthermore, the telescopic shaft 245 slides with the centering ring 247, which ensures that the axis of the telescopic shaft 245 coincides with the axis of the support sleeve 244, thereby ensuring that the axis of the telescopic shaft 245 coincides with the axis of the rotating shaft 21 of the corresponding flange 23. The connecting end 2451 is connected to the connecting sleeve 246 via a cylinder push block 248. Specifically, the cylinder push block 248 is mounted on the connecting sleeve 246, and the telescopic shaft 245 is mounted on the cylinder push block 248. The three components are fixedly connected by bolts. The push rod 2432 extends from the cylinder body 2431 and is fixedly connected to the cylinder push block 248. The push rod 2432 drives the cylinder push block 248, the telescopic shaft 245 and the connecting sleeve 246 to move.

[0053] In this embodiment, both ends of the chute 2453 are sealed, and one end is sealed by a stopper 2454, which is fixed to the chute 2453 by bolts. By sealing both ends of the chute 2453, the slider 2441 can be restrained in the chute 2453, ensuring that the telescopic shaft 245 does not separate from the support sleeve 244. The provision of the stopper 2454 facilitates the installation of the telescopic shaft 245 and the support sleeve 244.

[0054] In this embodiment, the connecting sleeve 246 is provided with a plurality of through holes, and the connecting sleeves 246 of the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 are connected to each other through bolts, pins, etc. located in the through holes.

[0055] When docking is not required, the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 of this embodiment are respectively housed in the rotating shaft 21 of the corresponding flange 23. When docking is required, the cylinder 243 extends the telescopic shaft 245 to make the connecting sleeves 246 of the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 contact each other, and fix them by bolts or pins to achieve docking of the two connecting sleeves 246, thereby connecting the two flanges 23 together and realizing the linkage of the two flanges 23 to ensure that the torsion degree of the flange 23 is within the qualified range when rotating.

[0056] Please refer to Figure 8The rotating power assembly 26 includes a bracket 261 fixed to other components of the horizontal riveting jig, a power motor 262 fixedly mounted on the bracket 261, a drive sprocket 263 connected to the power motor 262, and a driven sprocket 264 connected to the drive sprocket 263 via a chain 204. The driven sprocket 264 is mounted on the rotating shaft 21 of the fixed flange assembly 201. The drive sprocket 263 is fixed to the bracket 261 via a rotating bearing. In this embodiment, the diameter of the drive sprocket 263 is smaller than that of the driven sprocket 264.

[0057] To ensure that the chain 204 can effectively transmit power, in this embodiment, the rotary power assembly 26 further includes a vertical shaft 265 fixed to the bracket 261, a tensioning adjustment block 266 threadedly connected to the vertical shaft 265, a tensioning rocker arm 267 sleeved on the vertical shaft 265 and located on the bottom side of the tensioning adjustment block 266, and a tensioning pulley 268 connected to the tensioning rocker arm 267 and in contact with the bottom inner side of the chain 204. A tensioning spring 269 is also sleeved on the vertical shaft 265 and located between the bracket 261 and the tensioning rocker arm 267. When the chain 204 becomes loose, the tensioning adjustment block 266 is rotated to cause the tensioning rocker arm 267 to slide downward on the vertical shaft 265, compressing the tensioning spring 269. The tensioning rocker arm 267 then drives the tensioning pulley 268 downward, thereby tightening the chain 204.

[0058] Example 2

[0059] This embodiment provides a method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function based on Embodiment 1, comprising the following steps:

[0060] S1: Use a laser locator to adjust the line connecting the corresponding positions of the two flanges 23 to be parallel to the base surface of the base on which the horizontal riveting jig is installed, and point the circumferential positioning pointers 203 corresponding to the two flanges 23 to the same scale of the corresponding flange circumferential positioning rings 234 (this can be achieved by releasing the brakes 29 on the rotating shaft 21 and manually rotating the flanges 23);

[0061] S2: Release the braking of the rotating shaft 21 by all brakes 29, then extend the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 from the corresponding rotating shaft 21 until they touch and connect together, and then restore the braking of the rotating shaft 21 by all brakes 29;

[0062] S3: When assembling the large-diameter cylindrical riveted parts, release all brakes 29 on the rotating shaft 21, and rotate the fixed flange assembly 201 under the drive of the rotating power assembly 26, thereby driving the movable flange assembly 202 to work in conjunction, thereby adjusting the position of the large-diameter cylindrical riveted parts for easy assembly. During the rotation of the weapon, the torsion between the fixed flange assembly 201 and the movable flange assembly 202 can be kept within the qualified range, thereby reducing the riveting error of the large-diameter cylindrical riveted parts.

[0063] During the assembly of large-diameter cylindrical rivets: if the circumferential positioning pointers 203 corresponding to the two flanges 23 point to the same scale of the corresponding flange circumferential positioning rings 234, continue to assemble; if the circumferential positioning pointers 203 corresponding to the two flanges 23 do not point to the same scale of the corresponding flange circumferential positioning rings 234, release the braking of the rotating shaft 21 by all brakes 29, manually rotate the flange 23 of the flange assembly 202, so that the circumferential positioning pointers 203 corresponding to the two flanges 23 point to the same scale of the corresponding flange circumferential positioning rings 234, then restore the braking of the rotating shaft 21 by all brakes 29 and assemble the large-diameter cylindrical rivets.

[0064] The two flanges 23 of the flange assembly of this embodiment can be linked to each other. During the entire operation, it is only necessary to align the two flanges 23 through a laser locator and connect them through the first telescopic shaft assembly 241 and the second telescopic shaft assembly 242 to keep the torsion of the two flanges 21 after rotation within a qualified range. In addition, during the assembly process of large-diameter cylindrical rivet parts, the flange 23 of the flange assembly 202 can be manually fine-tuned to eliminate the error caused by mechanical rotation and reduce the torsion between the two flanges 23.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function, characterized in that: The adjustable flange assembly with a torsion retention function comprises: a fixed flange assembly (201), a movable flange assembly (202), a rotary power assembly (26), a brake (29), a docking mechanism (24), and a circumferential positioning pointer (203); The fixed flange assembly (201) and the movable flange assembly (202) have the same structure and are arranged opposite to each other in the axial direction, and both include a rotating shaft (21) and a flange (23) sleeved on the rotating shaft (21); the rotating shaft (21) is connected to the brake (29), and the rotating shaft (21) of the fixed flange assembly (201) is also connected to the rotating power assembly (26); The docking mechanism (24) comprises a first telescopic shaft assembly (241) and a second telescopic shaft assembly (242) which are axially arranged opposite to each other; the first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) are respectively slidably arranged in the rotating shaft (21) of the fixed flange assembly (201) and the movable flange assembly (202); The first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) are respectively extended from the corresponding rotating shaft (21) and then docked together, so that the flanges (23) of the fixed flange assembly (201) and the movable flange assembly (202) are linked to maintain the torsion between the flanges (23); The first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) both include a cylinder (243), a support sleeve (244), a telescopic shaft (245), and a connecting sleeve (246); the telescopic shaft (245) includes a connecting end (2451) and a free end (2452); one end of the cylinder (243) is fixedly connected to the corresponding rotating shaft (21), the other end of the cylinder (243) extends from the free end (2452) into the telescopic shaft (245) and is connected to the connecting end (2451), and the support sleeve (244) is fixedly connected to the corresponding rotating shaft (21); the telescopic shaft (245) passes through the support sleeve (244) and is slidably matched with the support sleeve (244), and the connecting end (2451) is connected to the connecting sleeve (246); the connecting sleeves (246) of the first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) are arranged relative to each other and match each other; The connecting sleeves (246) of the first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) are moved closer to or farther away from each other under the action of the corresponding cylinders (243), thereby achieving docking or separation between the connecting sleeves (246); A flange circumferential positioning ring (234) is provided on the back side of the flange (23), and the flange circumferential positioning ring (234) is provided with a scale matching the circumferential positioning pointer (203); The torsion maintaining method comprises the following steps: S1: Using a laser locator, adjust the line connecting the corresponding positions of the two flanges (23) to be parallel to the base surface; S2: releasing the braking of the rotating shaft (21) by all brakes (29), and then extending the first telescopic shaft assembly (241) and the second telescopic shaft assembly (242) from the corresponding rotating shaft (21) until they are in contact and connected together, and then restoring the braking of the rotating shaft (21) by all brakes (29); S3: When assembling the large-diameter cylindrical riveted part, release all brakes (29) on the rotating shaft (21), and drive the fixed flange assembly (201) to rotate under the drive of the rotating power assembly (26), thereby driving the movable flange assembly (202) to be linked, so that the torsion between the fixed flange assembly (201) and the movable flange assembly (202) is kept within the qualified range; In step S3, during the assembly of the large-diameter cylindrical riveted component, if the circumferential positioning pointers (203) corresponding to the two flanges (23) do not point to the same scale of the corresponding flange circumferential positioning rings (234), the braking of the rotating shaft (21) by all brakes (29) is released, and the flange (23) of the flange assembly (202) is manually rotated so that the circumferential positioning pointers (203) corresponding to the two flanges (23) point to the same scale of the corresponding flange circumferential positioning rings (234), and then the braking of the rotating shaft (21) by all brakes (29) is restored and the large-diameter cylindrical riveted component is assembled.

2. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 1, characterized in that: The cylinder (243) comprises a cylinder body (2431) and a push rod (2432); one end of the cylinder body (2431) is provided with a tailstock (2433) connected to the corresponding rotating shaft (21); the push rod (2432) extends from the other end of the cylinder body (2431) and is connected to the connecting end (2451).

3. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 1, characterized in that: The outer side of the telescopic shaft (245) is provided with a sliding groove (2453) with sealed ends. The end of the sliding groove (2453) close to the free end (2452) is connected to a limiting block (2454) and is sealed by the limiting block (2454). The inner side of the support sleeve (244) is provided with a sliding block (2441) that cooperates with the sliding groove (2453).

4. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 3, characterized in that: Both ends of the support sleeve (244) are respectively provided with a centering ring (247) for connecting to the corresponding rotating shaft (21); the centering ring (247) is sleeved on the outside of the telescopic shaft (245) and slidably engaged with the telescopic shaft (245).

5. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 1, characterized in that: The rotating power assembly (26) comprises a bracket (261), a power motor (262) arranged on the bracket (261), a driving sprocket (263) connected to the power motor (262), and a driven sprocket (264) connected to the driving sprocket (263) via a chain (204); the driven sprocket (264) is sleeved on the corresponding rotating shaft (21).

6. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 5, characterized in that: The rotary power assembly (26) further comprises a vertical shaft (265) provided on the bracket (261), a tensioning adjustment block (266) threadedly connected to the vertical shaft (265), a tensioning rocker arm (267) sleeved on the vertical shaft (265) and located at the bottom side of the tensioning adjustment block (266), and a tensioning wheel (268) connected to the tensioning rocker arm (267) and in contact with the inner side of the chain (204); a tensioning spring (269) is sleeved on the vertical shaft (265), and the tensioning spring (269) is located between the bracket (261) and the tensioning rocker arm (267).

7. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to any one of claims 1 to 6, characterized in that: It also includes a circumferential positioning pointer (203); a flange circumferential positioning ring (234) is provided on the back side of the flange (23), and the flange circumferential positioning ring (234) is provided with a scale matching the circumferential positioning pointer (203).

8. The method for maintaining the torsion of an adjustable flange assembly with a torsion maintaining function according to claim 1, characterized in that: In step S1, the circumferential positioning pointers (203) corresponding to the two flanges (23) are also pointed to the same scale of the corresponding flange circumferential positioning rings (234).

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