Split type unconstrained heat exchange tube bundle jig

Abstract

The invention provides a split type unconstrained heat exchange tube bundle jig. Comprising a main hub and an auxiliary hub. One end of the flute pipe is inserted into the main hub shaft sleeve to form a supporting action point of the heat exchange pipe bundle main body; an outer ring pipe supporting plate and an inner ring pipe supporting plate are assembled on a main radial plate arranged on the inner side of a main rim, the outer end of the outer ring pipe supporting plate and the outer end of the inner ring pipe supporting plate are detachably connected with the main radial plate, the inner end of the outer ring pipe supporting plate and the inner end of the inner ring pipe supporting plate are detachably connected to a main hub shaft sleeve, and an outer ring pipe and an inner ring pipe are limited and fixed respectively. One end of the flute pipe is inserted into the auxiliary hub shaft sleeve to form another supporting action point of the heat exchange pipe bundle main body; an auxiliary radial plate is arranged on the inner side of the auxiliary hub, heat exchange pipe limiting holes are formed in the auxiliary radial plate in an array mode, and outer ring pipes and inner ring pipes in the heat exchange pipes penetrate through the heat exchange pipe limiting holes. An auxiliary hub shaft sleeve is welded in the center of the auxiliary radial plate; the main hub and the auxiliary hub are located on the carrier rollers respectively, the position of the heat exchange pipe is adjusted through synchronous rotation of the main hub and the auxiliary hub, and copper sheet welding operation is carried out.

Description

Technical Field

[0001] The invention relates to a heat exchange tube in the field of pipelines, and in particular to a split unconstrained heat exchange tube bundle fixture. Background Art

[0002] At present, when unconstrained heat exchange tube bundles are welded with copper sheets to form fins, the space structure formed by the copper sheets on the heat exchange tubes cannot be guaranteed because the heat exchange tubes are staggered and the two ends are fixed indefinitely. In order to build a consistent copper sheet structure on the heat exchange tubes, a solution is usually adopted, which is to use multiple people to assemble, with each person responsible for welding a part of the copper sheets, and assembling by manpower. Another solution is to use some metal materials as tooling, assemble the unconstrained heat exchange tube bundles by welding, and then weld them. After welding, cut off the tooling and grind the welded joints.

[0003] However, the inventors of this application found that the above technology has at least the following technical problems in the process of implementing the technical solution of the invention in the embodiment of this application: In the first solution, since there are no constraints on both ends of the heat exchange tubes, the disordered heat exchange tubes cannot be fixed to form a stable spatial structure, so the accuracy of the assembly welding cannot be guaranteed and there is no repeatability. In the second solution, since welding and disassembly tools are required, the heat exchange tubes are easily damaged when the tools are cut. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a split unconstrained heat exchange tube bundle fixture. The split unconstrained heat exchange tube bundle fixture is arranged on the main hub and the secondary hub through a flute tube and the heat exchange tube bundle. The main hub and the secondary hub rotate synchronously, and the heat exchange tube bundle adjusts its position with the rotation to meet the needs of welding copper sheets, thereby solving the technical problem of welding copper fins to unconstrained heat exchange tubes.

[0005] The solution adopted by the present invention to solve the technical problem is: The split unconstrained heat exchange tube bundle fixture includes a main hub and a secondary hub; The main wheel hub is a split disc-shaped structure, which is arranged at the staggered connecting end of the heat exchange tube, and the outer ring tube and the inner ring tube in the heat exchange tube are arranged in order with the flute tube as the center, and the flute tube and the heat exchange tube are detachably combined and limited; the main wheel hub has a main wheel rim, a main spoke plate and a main wheel hub sleeve, one end of the flute tube is inserted into the main wheel hub sleeve to form a supporting point for the main body of the heat exchange tube bundle, and the outer contour of the main wheel rim is an arc shape, which is used to rotate the main wheel hub; a main spoke plate is arranged on the inner side of the main wheel rim, and an outer ring tube support plate and an inner ring tube support plate are assembled on the main spoke plate, and the outer ends of the outer ring tube support plate and the inner ring tube support plate are detachably connected to the main spoke plate, and the inner ends of the outer ring tube support plate and the inner ring tube support plate are detachably connected to the main wheel hub sleeve, respectively limiting and fixing the outer ring tube and the inner ring tube; the main wheel rim is a quarter arc structure, and mutually adapted main spoke plates are welded on the inner side of the main wheel rim, and wheel rim ear plates are arranged at both ends of the main wheel rim; The secondary wheel hub is an integral disc-shaped structure, which is arranged at the independent end of the heat exchange tube. The outer ring tube and the inner ring tube in the heat exchange tube are inserted and fixed in the upper limit of the secondary wheel hub with the flute tube as the center; the secondary wheel hub has a secondary wheel rim, a secondary spoke plate and a secondary wheel hub sleeve, and one end of the flute tube is inserted in the secondary wheel hub sleeve to form another supporting point of the heat exchange tube bundle body; the outer contour of the secondary wheel rim is an arc shape, which is used to rotate the secondary wheel hub; a secondary spoke plate is arranged on the inner side of the secondary wheel hub, and the secondary spoke plate is arrayed with heat exchange tube limiting holes, and the outer ring tube and the inner ring tube in the heat exchange tube pass through the heat exchange tube limiting holes; the secondary wheel rim is an arc structure, the secondary spoke plate is welded on the inner side of the secondary wheel rim, and the secondary wheel hub sleeve is welded in the center of the secondary spoke plate; Among them, the main hub and the auxiliary hub are respectively located on the rollers. Through the synchronous rotation of the main hub and the auxiliary hub, the heat exchange tubes assembled thereon are driven to rotate, the position of the heat exchange tubes is adjusted, and the copper sheet welding operation is performed.

[0006] In order to further solve the technical problem to be solved by the present invention, the method of applying the split unconstrained heat exchange tube bundle fixture in the split unconstrained heat exchange tube bundle fixture provided by the present invention comprises the following steps: Step 1. Determine the distance between the two rollers according to the length of the flute tube; Step 2. Place the secondary wheel hub on a roller, insert one end of the flute tube into the secondary wheel hub sleeve, and connect and fix one end of the flute tube with the flute tube flange through a bolt assembly; Step 3. Assemble the main hub sleeve on the other end of the flute tube and tighten it with screws; Step 4. Install the main wheel ring and the main and auxiliary plates on the main wheel hub sleeve, and assemble the inner ring tube support plate to limit the inner ring tube in the heat exchange tube; Step 5. Assemble the outer tube support plate to limit the outer tube in the heat exchange tube; Step 6. Assemble the main rims together through the rim lugs at both ends of the main rims, place the main hub on another roller, keep the main hub concentric with the secondary hub, and keep the heat exchange tube in a balanced state; Step 7. Synchronously rotate the main hub and the auxiliary hub to perform copper sheet welding; Step 8. When the welded copper sheet is close to the main wheel hub, leave a gap of 80 to 100 mm; install the rotating seat, insert the lever into the staggered gap between the connecting ends of the outer ring tube and the inner ring tube, and replace the main wheel hub and the secondary wheel hub to rotate synchronously; first remove the main wheel rim and the main spoke plate, then remove the outer ring tube support plate, remove the inner ring tube support plate, and finally remove the main wheel hub sleeve; continue welding the copper sheet until the spatial structure of the copper sheet is completed.

[0007] Positive effects: One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. Since the embodiment of the present application adopts a technical means in which one end of the heat exchange tube is inserted into the secondary hub and the other end is detachably assembled on the main hub, the outer contours of the main hub and the secondary hub are in an arc shape and are located on rollers, the main hub and the secondary hub can rotate synchronously on the rollers, and the heat exchange tube rotates with the main hub and the secondary hub, which effectively solves the technical problems in the prior art. The main hub and the secondary hub can rotate synchronously on the rollers, and the heat exchange tube rotates with the main hub and the secondary hub, and the position of the heat exchange tube is adjusted, thereby achieving the technical effect of precise positioning of the welded copper sheet.

[0008] 2. Since the embodiment of the present application adopts the technical means of assembling a flute tube between the main hub shaft sleeve of the main hub and the secondary hub shaft sleeve of the secondary hub, the main hub and the secondary hub have good connection strength, which effectively solves the technical problem in the prior art that the main hub and the secondary hub can keep synchronized when the heat exchange tube rotates, thereby achieving the technical effect of ensuring stable support of the welded copper sheet.

[0009] 3. Since the embodiment of the present application adopts the technical means of detachably assembling the heat exchange tube on the main hub, the main hub occupies the space for welding the copper sheet on the heat exchange tube. The copper sheet at the connecting end of the heat exchange tube cannot be welded, and the main hub needs to be removed. This effectively solves the technical problem of welding the copper sheet at the obstruction of the main hub in the prior art. The lever on the rotating seat overlaps the heat exchange tube to form an alternative support point, and the lever rotates on the base along with the turntable, thereby achieving the technical effect of a complete frame of the copper sheet.

[0010] 4. Since the embodiment of the present application adopts a technical means that an outer ring tube outer ear plate and an inner ring tube outer ear plate are arranged on the main spoke plate, and a hub ear plate is arranged on the main hub shaft sleeve; at the same time, an outer ring tube connecting ear plate and an outer ring tube inner ear plate are arranged on the outer ring tube support plate, and an inner ring tube connecting ear plate and an inner ring tube inner ear plate are arranged on the inner ring tube support plate, the outer ring tube connecting ear plate at one end of the outer ring tube support plate is connected to the hub ear plate, and the outer ring tube inner ear plate at the other end of the outer ring tube support plate is connected to the outer ring tube outer ear plate, between the main spoke plate and the main hub shaft sleeve. The outer ring tube support plate is detachably connected to the wheel hub by the inner ring tube connecting ear plate at one end of the inner ring tube support plate, and the inner ring tube inner ear plate is connected to the inner ring tube outer ear plate at the other end of the inner ring tube support plate, so that a detachable connection of the inner ring tube support plate is formed between the main spoke plate and the main hub sleeve; the technical problem that the outer ring tube support plate and the inner ring tube support plate can be detachably connected in the prior art is effectively solved, thereby realizing the technical effect of assembling the heat exchange tube on the main hub, clamping and fixing it, and welding the copper sheet.

[0011] 5. Since the embodiment of the present application adopts the technical means of providing outer semicircular through holes of the outer ring tube and outer semicircular through holes of the inner ring tube on the main spoke plate, providing outer semicircular through holes of the outer ring tube support plate, and providing inner semicircular through holes of the inner ring tube on the inner ring tube support plate, when the inner semicircular through holes of the outer ring tube on the outer ring tube support plate are closed with the outer semicircular through holes of the outer ring tube on the main spoke plate, the outer ring tube in the heat exchange tube is clamped and fixed, and when the inner semicircular through holes of the inner ring tube on the inner ring tube support plate are closed with the outer semicircular through holes of the inner ring tube on the main spoke plate, the inner ring tube in the heat exchange tube is also clamped and fixed, which effectively solves the technical problem of welding copper sheets in the prior art, and further realizes the technical effect that the main hub can drive the heat exchange tube bundle to rotate and adjust the position to weld the copper sheets.

[0012] Suitable for use as a split-type unconstrained heat exchange tube bundle fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is the southeast isometric view of this embodiment; Figure 2 This is the southwest isometric view of this embodiment; Figure 3 This is a front cross-sectional view of this embodiment; Figure 4 It is a top view of this embodiment; Figure 5Isometric view of the southeast of the main hub; Figure 6 Isometric drawing of the southwest of the main hub; Figure 7 Northeast isometric view of the main hub; Figure 8 It is a northwest isometric view of the main hub; Fig. 9 This is the main hub main view cross-section; Fig.10 This is the left view of the main hub; Fig.11 This is the right side view of the main wheel hub; Fig.12 It is the northeast isometric view of the main wheel rim and main spoke; Fig.13 It is the northwest isometric view of the main wheel rim and main spoke; Fig.14 This is the southeast isometric view of the inner ring pipe support plate; Fig.15 This is the southeast isometric view of the outer ring tube support plate; Fig.16 Southeast isometric view of the main wheel bushing; Fig.17 For the main wheel bushing southwest isometric; Fig.18 This is the southeast isometric view of the secondary hub; Fig.19 It is the southwest isometric view of the secondary hub; Fig. 20 This is the main view of the secondary hub; Fig.21 A large picture of the part of secondary hub A is posted; Fig. 22 This is the southeast isometric view of the rotating support seat; Fig.23 This is the southwest isometric view of the rotating support seat; Fig.24 It is a front view cross-sectional view of the rotating support seat; Fig.25 It is a top view of the rotating support seat; Fig.26 This is the southeast isometric view of the copper plate.

[0015] In the figure: 1. Main hub, 11. Main wheel rim, 111. Wheel rim lugs, 12. Main spokes, 121. Outer ring tube support groove, 1211. The outer semicircular through hole of the outer ring tube, 122. Inner ring tube support groove, 1221. The semicircular through hole outside the inner ring tube, 123. Outer ear plate of outer ring tube, 124. Inner ring tube outer ear plate, 13. Main hub sleeve, 131. Center plate, 132. Bushing, 133. Wheel hub lug, 134. Screws, 14. Outer ring tube support plate, 141. Outer ring pipe connection ear plate, 142. Semicircular through hole in the outer ring tube, 143. Outer ring tube inner ear plate, 15. Inner ring tube support plate, 151. Inner ring pipe connecting ear plate, 152. Semicircular through hole in inner ring tube, 153. Inner ear plate of inner ring tube; 2. Secondary hub, 21. Secondary wheel rim, 22. Secondary spokes, 221. Heat exchange tube limiting hole, 23. Secondary wheel hub sleeve, 231. Baffle, 232. Cone mouth, 233. Sawtooth, 24. Ribs, 25.Flute flange, 26. Bolt assembly; 3.Swivel seat, 31. Base, 311. Support frame, 312. Axle seat, 32. Turntable, 321. Bushing, 322. Abdomen, 3221. lever through hole, 323. Lever, 324. Feet, 33. Circlip for shaft; 4. Flute; 5. Heat exchange tube; 6. Copper sheet.

[0016] Fig.12 Northeast isometric view of the main wheel rim and main spokes Fig.13 In the northwest isometric drawing of the main wheel rim and the main spoke plate, the outer ring tube outer ear plate 123 and the inner ring tube outer ear plate 124 are not drawn. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0018] The embodiment of the present application solves the problems of low assembly accuracy and damage to the heat exchange tube bundle that are easily caused by the application of copper sheets for welding heat exchange tube bundles in the prior art by providing a split unconstrained heat exchange tube bundle jig. The split unconstrained heat exchange tube bundle jig is used in the welding of copper sheets for unconstrained heat exchange tube bundles to achieve precise positioning and stable support, which makes it easy to detect the welding quality, ensure the quality of assembly and welding, and improve the production efficiency of heat exchange tube bundle manufacturing.

[0019] As shown in the figure, the split unconstrained heat exchange tube bundle fixture includes a main hub 1 and a secondary hub 2; The main hub 1 is a split disc-shaped structure, which is arranged at the staggered connecting end of the heat exchange tube 5. The outer ring tube and the inner ring tube in the heat exchange tube 5 are arranged in order with the flute tube 4 as the center. The detachable combined limiting flute tube 4 and the heat exchange tube 5 are used to weld the copper sheet 6 to form a stable copper sheet 6 space structure to meet the needs of precise positioning and stable support. Among them, the flute tube 4 is the center of the heat exchange tube bundle and forms the main body of the structure; the main hub 1 has a main wheel rim 11, a main spoke plate 12 and a main hub shaft sleeve 13. One end of the flute tube 4 is inserted into the main hub shaft sleeve 13 to form a supporting point for the main body of the heat exchange tube bundle. The outer contour of the main wheel rim 11 is an arc shape, which is used to rotate the main hub 1, so that when welding the copper sheet 6, the heat exchange tube bundle can be rotated, and the position can be adjusted to weld the copper sheet 6 in sequence to ensure the space structure of the copper sheet 6 Stability; a main spoke plate 12 is arranged on the inner side of the main wheel rim 11, and an outer ring tube support plate 14 and an inner ring tube support plate 15 are assembled on the main spoke plate 12. The outer ends of the outer ring tube support plate 14 and the inner ring tube support plate 15 are detachably connected to the main spoke plate 12, and the inner ends of the outer ring tube support plate 14 and the inner ring tube support plate 15 are detachably connected to the main wheel hub sleeve 13, respectively limiting and fixing the outer ring tube and the inner ring tube; in this embodiment, the main wheel rim 11 is a quarter arc structure, and main spoke plates 12 that adapt to each other are welded on the inner side of the main wheel rim 11. Wheel rim ear plates 111 are arranged at both ends of the main wheel rim 11, and bolt through holes are arranged on the wheel rim ear plates 111. The main wheel rim 11 is assembled together by locking bolts to form an overall arc structure, which is convenient for rotating the heat exchange tube 5 when welding the copper sheet 6; The secondary wheel hub 2 is an integral disc-shaped structure, which is arranged at the independent end of the heat exchange tube 5. The outer ring tube and the inner ring tube in the heat exchange tube 5 are inserted and fixed on the secondary wheel hub 2 with the flute tube 4 as the center; the secondary wheel hub 2 has a secondary wheel rim 21, a secondary spoke plate 22 and a secondary wheel hub sleeve 23. One end of the flute tube 4 is inserted on the secondary wheel hub sleeve 23 to form another supporting point of the heat exchange tube bundle body, so that the heat exchange tube bundle is fixed in the axial direction; the outer contour of the secondary wheel rim 21 is an arc shape, which is used to rotate the secondary wheel hub 2, so that when the copper sheet 6 is welded, the secondary wheel hub 2 and the main wheel hub 1 rotate synchronously, and the heat exchange tube 5 is welded in sequence. The copper sheet 6 on it is welded; a secondary spoke plate 22 is arranged on the inner side of the secondary hub 2, and a heat exchange tube limiting hole 221 is arrayed on the secondary spoke plate 22. The outer ring tube and the inner ring tube in the heat exchange tube 5 pass through the heat exchange tube limiting hole 221, so that the heat exchange tube bundle is fixed in the radial direction; in this embodiment, the secondary wheel rim 21 is an arc structure, the secondary spoke plate 22 is welded on the inner side of the secondary wheel rim 21, and a secondary hub sleeve 23 is welded at the center of the secondary spoke plate 22 to form an integral structure, so that the secondary hub 2 has a higher strength, ensuring that the heat exchange tube bundle is not deformed during rotation, and ensuring the precise positioning and stable support of the copper sheet 6.

[0020] The main hub 1 and the auxiliary hub 2 are respectively seated on rollers, and the heat exchange tube 5 mounted thereon is driven to rotate by the synchronous rotation of the main hub 1 and the auxiliary hub 2, so that the position of the heat exchange tube 5 can be adjusted and the copper sheet 6 welding operation can be performed.

[0021] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Since one end of the heat exchange tube 5 is inserted into the secondary hub 2 and the other end is detachably mounted on the main hub 1, the outer contours of the main hub 1 and the secondary hub 2 are arc-shaped and are seated on rollers. Therefore, the main hub 1 and the secondary hub 2 can rotate synchronously on the rollers, and the heat exchange tube 5 rotates with the main hub 1 and the secondary hub 2. The position of the heat exchange tube 5 is adjusted to ensure the precise positioning of the welding copper sheet 6.

[0022] Since the flute tube 4 is installed between the main hub shaft sleeve 13 of the main hub 1 and the secondary hub shaft sleeve 23 of the secondary hub 2, the main hub 1 and the secondary hub 2 have good connection strength. When the heat exchange tube 5 rotates, the main hub 1 and the secondary hub 2 can keep in sync to ensure stable support of the welded copper sheet 6.

[0023] In order to ensure the integrity of the implementation of this embodiment, the split unconstrained heat exchange tube bundle fixture also includes a rotating seat 3, which is used to support the welding of the copper sheet 6 at the shielding part of the main hub 1 after the main hub 1 is disassembled; the rotating seat 3 includes a base 31, a rotating disk 32 and a shaft elastic retaining ring 33; The base 31 is used to support the rotating base 3 and fix it on the working platform, and an axle seat 312 is arranged on the base 31; A shaft sleeve 321 is provided at the outer end of the turntable 32, and the shaft sleeve 321 is rotatably connected to the shaft seat 312, so that the turntable 32 rotates on the base 31; a lever 323 is provided at the inner end of the turntable 32, which is used to overlap the heat exchange tube 5 for rotation support, replacing the force application point after the main hub 1 is disassembled; The shaft elastic retaining ring 33 is used for assembling the turntable 32 and the base 31 to lock the shaft sleeve 321 on the shaft seat 312 .

[0024] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Since the heat exchange tube 5 is detachably assembled on the main hub 1, the main hub 1 occupies the space for welding the copper sheet 6 on the heat exchange tube 5. The copper sheet 6 at the connecting end of the heat exchange tube 5 cannot be welded, and the main hub 1 needs to be removed. Therefore, the lever 323 on the rotating seat 3 overlaps the heat exchange tube 5 to form an alternative support point. The lever 323 rotates on the base 31 along with the turntable 32, thereby realizing synchronous rotation with the secondary hub 2, so that the heat exchange tube bundle can continue to rotate, and the copper sheet 6 welding operation can be performed at the shielding position of the main hub 1 to realize the complete frame of the copper sheet 6.

[0025] In order to ensure the stability of the structure of this embodiment, the main spoke plate 12 is a plate-like structure, and an outer ring tube support groove 121 is provided on the main spoke plate 12 for assembling the outer ring tube support plate 14, and an outer ring tube outer semicircular through hole 1211 is provided at the edge of the outer ring tube support groove 121, and outer ring tube outer ear plates 123 are provided on both sides of the outer ring tube outer semicircular through hole 1211 for connecting the outer ring tube support plate 14 to form a detachable structure; an inner ring tube support groove 122 is surrounded by the extended intersection between the outer ring tube support grooves 121, and the inner ring tube support grooves 122 and the outer ring tube support grooves 121 are staggered in an array for assembling the inner ring tube support plate 15, and an inner ring tube outer semicircular through hole 1221 is provided at the edge of the inner ring tube support plate 15, and inner ring tube outer ear plates 124 are provided on both sides of the inner ring tube outer semicircular through hole 1221 for connecting the inner ring tube support plate 15 to form a detachable structure.

[0026] In order to further ensure the stability of the structure of this embodiment, the main hub sleeve 13 includes a center disk 131, a bushing 132, a hub ear plate 133 and a screw 134; The center disk 131 is in the shape of a circular plate. A bushing 132 is provided in the middle of one side of the center disk 131 for assembling the flute tube 4. A screw 134 is provided in the radial direction of the bushing 132 to lock the flute tube 4 on the bushing 132 and realize radial positioning. A hub ear plate 133 is provided on the outer circle of the other side of the center disk 131. The hub ear plates 133 are evenly arrayed and are respectively used to connect the outer ring tube support plate 14 and the inner ring tube support plate 15 to form a detachable structure.

[0027] In order to optimize the structure of this embodiment, the outer ring tube support plate 14 is a fan-shaped plate embedded in the outer ring tube support groove 121, and an outer ring tube inner semicircular through hole 142 is arranged on the top of the outer ring tube support plate 14. The outer ring tube inner semicircular through hole 142 and the outer ring tube outer semicircular through hole 1211 on the main spoke plate 12 are combined to form a circular hole, which clamps and fixes the outer ring tube of the heat exchange tube 5; outer ring tube inner ear plates 143 are arranged on both sides of the outer ring tube outer semicircular through hole 1211 on one side of the outer ring tube support plate 14, which are connected to the outer ring tube outer ear plates 123 on the main spoke plate 12 to form a detachable structure; an outer ring tube connecting ear plate 141 is arranged at the bottom of the other side of the outer ring tube support plate 14, which is connected to the hub ear plate 133 on the main hub shaft sleeve 13 to form a detachable structure.

[0028] In order to further optimize the structure of this embodiment, the inner tube support plate 15 is a fan-shaped plate embedded between the two outer tube support plates 14. An inner tube inner semicircular through hole 152 is arranged on the top of the inner tube support plate 15. The inner tube inner semicircular through hole 152 and the inner tube outer semicircular through hole 1221 on the main spoke plate 12 are combined to form a circular hole, which clamps and fixes the inner tube of the heat exchange tube 5; inner tube inner ear plates 153 are arranged on both sides of the inner tube inner semicircular through hole 152 on one side of the inner tube support plate 15, which are connected to the inner tube outer ear plates 124 on the main spoke plate 12 to form a detachable structure; an inner tube connecting ear plate 151 is arranged at the bottom of one side of the inner tube support plate 15, which is also connected to the hub ear plate 133 on the main hub sleeve 13 to form a detachable structure.

[0029] In order to further optimize the structure of this embodiment, the secondary hub sleeve 23 is a blind hole sleeve 321 arranged at the center of the secondary spoke plate 22, which is used to assemble the flute pipe 4; a baffle 231 is arranged at one end of the secondary hub sleeve 23, and a mounting hole is arranged in the middle of the baffle 231 for assembling the bolt assembly 26; a tapered opening 232 is arranged at the blind hole at the other end of the secondary hub sleeve 23 to facilitate the insertion of the flute pipe 4, and a serration 233 is arranged on the outer side of the tapered opening 232 for rotating the secondary hub 2 when assembling the flute pipe 4, and a flute pipe flange 25 for connecting the flute pipe 4 is arranged at the tapered opening 232, and the bolt assembly 26 passes through the baffle 231 and is screwed to the flute pipe flange 25 to fix the flute pipe 4 axially; a rib plate 24 is arranged between the secondary hub sleeve 23 and the secondary spoke plate 22 to support the secondary hub sleeve 23 and enhance the connection strength.

[0030] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: Since the outer ring tube outer ear plate 123 and the inner ring tube outer ear plate 124 are arranged on the main spoke plate 12, and the hub ear plate 133 is arranged on the main hub sleeve 13; at the same time, the outer ring tube connecting ear plate 141 and the outer ring tube inner ear plate 143 are arranged on the outer ring tube support plate 14, and the inner ring tube connecting ear plate 151 and the inner ring tube inner ear plate 153 are arranged on the inner ring tube support plate 15; therefore, the outer ring tube connecting ear plate 141 at one end of the outer ring tube support plate 14 is connected to the hub ear plate 133, and the outer ring tube inner ear plate 143 at the other end of the outer ring tube support plate 14 is connected to the outer ring tube outer ear plate 123. An outer ring tube support plate 14 is detachably connected between the plate 12 and the main hub shaft sleeve 13; similarly, an inner ring tube connecting ear plate 151 at one end of the inner ring tube support plate 15 is connected to the hub ear plate 133, and an inner ring tube inner ear plate 153 at the other end of the inner ring tube support plate 15 is connected to the inner ring tube outer ear plate 124, so that a detachable connection of the inner ring tube support plate 15 is formed between the main spoke plate 12 and the main hub shaft sleeve 13; the outer ring tube support plate 14 and the inner ring tube support plate 15 can be detachably connected, so that the heat exchange tube 5 can be assembled on the main hub 1 and clamped and fixed, and the copper sheet 6 can be welded.

[0031] Since the main spoke 12 is provided with an outer semicircular through hole 1211 of the outer ring tube and an inner semicircular through hole 1221 of the inner ring tube, the outer ring tube support plate 14 is provided with an outer ring tube inner semicircular through hole 142, and the inner ring tube support plate 15 is provided with an inner ring tube inner semicircular through hole 152, when the outer ring tube inner semicircular through hole 142 on the outer ring tube support plate 14 is closed with the outer semicircular through hole 1211 of the outer ring tube on the main spoke 12, the outer ring tube in the heat exchange tube 5 is clamped and fixed, and when the inner semicircular through hole 152 on the inner ring tube support plate 15 is closed with the inner ring tube outer semicircular through hole 1221 on the main spoke 12, the inner ring tube in the heat exchange tube 5 is also clamped and fixed, so that the main hub 1 can drive the heat exchange tube bundle to rotate and adjust the position to perform the welding operation of the copper sheet 6.

[0032] As a conventional technical choice, the base 31 includes a support frame 311 and an axle seat 312 ; the axle seat 312 is a double-hanging ear structure, and is located on the top of the support frame 311 .

[0033] Preferably, the turntable 32 is a rotating claw, including a sleeve 321, a web 322, a lever 323 and a foot plate 324; the web 322 is a circular plate, and a sleeve 321 is provided at the center of one side of the web 322, and the sleeve 321 is rotatably mounted on the shaft seat 312 of the base 31 and is locked and fixed by an elastic retaining ring 33 for the shaft; a lever through hole 3221 is arrayed on the other side of the web 322, and a lever 323 is mounted on the lever through hole 3221, and a lever 323 is mounted on the web A foot plate 324 is provided between 322 and the lever 323 to enhance the rigidity of the lever 323. The lever 323 is an L-shaped tube, which is overlapped on the heat exchange tube bundle and inserted into the interlaced gap between the connecting ends of the outer ring tube and the inner ring tube in the heat exchange tube 5, forming a cantilever rotation support point of the heat exchange tube bundle, and then the rotating seat 3 replaces the main hub 1 and rotates synchronously with the auxiliary hub 2, so as to perform the welding operation of the copper sheet 6 on the space blocked by the main hub 1, and complete the overall spatial structure welding of the copper sheet 6 on the heat exchange tube bundle.

[0034] The working process of this embodiment: The steps include: Step 1. Determine the distance between the two rollers according to the length of the flute tube 4; Step 2. Place the secondary hub 2 on a roller, insert one end of the flute tube 4 into the secondary hub sleeve 23, and connect and fix one end of the flute tube 4 with the flute tube flange 25 through the bolt assembly 26; Step 3. Assemble the main hub sleeve 13 at the other end of the flute tube 4 and tighten it with screws 134; Step 4. Set the main wheel rim 11 and the main and auxiliary plates on the main hub sleeve 13, and assemble the inner tube support plate 15 to limit the inner tube of the heat exchange tube 5; Sequentially assemble the connecting end of the inner ring tube in the heat exchange tube 5 to the outer semicircular through hole 1221 of the inner ring tube on the main spoke plate 12, close the inner semicircular through hole 152 of the inner ring tube with the outer semicircular through hole 1221 of the inner ring tube through the inner ring tube support plate 15, and clamp the inner ring tube to fix it, and sequentially insert the other end of the inner ring tube in the heat exchange tube 5 into the corresponding heat exchange tube limiting hole 221 on the secondary hub 2 to extend out; the inner ring tube inner ear plate 153 at one end of the inner ring tube support plate 15 is correspondingly connected to the inner ring tube outer ear plate 124 on the main spoke plate 12, and the inner ring tube connecting ear plate 151 at the other end of the inner ring tube support plate 15 is correspondingly connected to the hub ear plate 133 on the main hub shaft sleeve 13, and the inner ring tube support plate 15 is detachably assembled between the main hub shaft sleeve 13 and the main spoke plate 12; Step 5. Assemble the outer tube support plate 14 to limit the outer tube in the heat exchange tube 5; Sequentially assemble the connecting end of the outer ring tube in the heat exchange tube 5 to the outer semicircular through hole 1211 of the outer ring tube on the main spoke plate 12, close the inner semicircular through hole 142 of the outer ring tube with the outer semicircular through hole 1211 of the outer ring tube through the outer ring tube support plate 14, and clamp the outer ring tube to fix it, and sequentially insert the other end of the outer ring tube in the heat exchange tube 5 into the corresponding heat exchange tube limiting hole 221 on the secondary hub 2 to extend out; the outer ring tube inner ear plate 143 at one end of the outer ring tube support plate 14 is correspondingly connected to the outer ring tube outer ear plate 123 on the main spoke plate 12, and the outer ring tube connecting ear plate 141 at the other end of the outer ring tube support plate 14 is correspondingly connected to the hub ear plate 133 on the main hub shaft sleeve 13, so that the outer ring tube support plate 14 can be detachably assembled between the main hub shaft sleeve 13 and the main spoke plate 12; Step 6. Assemble the main wheel rim 11 together through the wheel rim lugs 111 at both ends of the main wheel rim 11, place the main wheel hub 1 on another roller, keep the main wheel hub 1 concentric with the auxiliary wheel hub 2, and keep the heat exchange tube 5 in a balanced state; Step 7. Synchronously rotate the main hub 1 and the secondary hub 2 to perform welding of the copper sheet 6; First, use a level ruler to stick to a heat exchange tube 5 to confirm that the heat exchange tube 5 is flush, and start welding the copper sheet 6 on one side of the secondary hub 2; Secondly, after the main hub 1 and the auxiliary hub 2 rotate one circle, the level ruler is withdrawn and the copper sheet 6 is welded in sequence; Finally, after welding three groups of copper sheets 6, use a level to check the level of the heat exchange tube 5 and check the concentricity of the heat exchange tube bundle; Step 8. When the welded copper sheet 6 is close to the main wheel hub 1, leave a gap of 80 to 100 mm; install the rotating seat 3, insert the lever 323 into the interlaced gap between the connecting ends of the outer ring tube and the inner ring tube, and replace the main wheel hub 1 and the secondary wheel hub 2 to rotate synchronously; first remove the main wheel rim 11 and the main spoke plate 12, then remove the outer ring tube support plate 14, remove the inner ring tube support plate 15, and finally remove the main wheel hub sleeve 13; continue welding the copper sheet 6 until the spatial structure of the copper sheet 6 is completed.

[0035] It is worth noting that the contents not described in detail in the specification belong to the existing technology known to the technical personnel in this field, and the model parameters of the rim ear plate, the outer ear plate of the outer ring tube, the outer ear plate of the inner ring tube, the hub ear plate, the outer ring tube connecting ear plate, the outer ring tube inner ear plate, the inner ring tube connecting ear plate, the inner ring tube inner ear plate, the screw and bolt assembly are not specifically limited, and the conventional parameters can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the existing technology and will not be described here.

[0036] Finally, it should be noted that: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. The split unconstrained heat exchange tube bundle fixture is characterized by: It comprises a main wheel hub (1) and a secondary wheel hub (2); The main hub (1) is a split disc-shaped structure, which is arranged at the staggered connecting end of the heat exchange tube (5), and the outer ring tube and the inner ring tube in the heat exchange tube (5) are arranged in order with the flute tube (4) as the center, and the flute tube (4) and the heat exchange tube (5) are detachably combined and limited, wherein the flute tube (4) is the center of the heat exchange tube bundle and forms the main body of the structure; The main hub (1) comprises a main wheel rim (11), a main spoke plate (12) and a main hub sleeve (13); one end of the flute tube (4) is inserted into the main hub sleeve (13) to form a supporting point for the heat exchange tube bundle body; the outer contour of the main wheel rim (11) is in the shape of an arc and is used to rotate the main wheel hub (1); a main spoke plate (12) is arranged on the inner side of the main wheel rim (11); an outer tube support plate (14) and an inner tube support plate (15) are mounted on the main spoke plate (12); the outer ends of the outer tube support plate (14) and the inner tube support plate (15) are detachably connected to the main spoke plate (12); the inner ends of the outer tube support plate (14) and the inner tube support plate (15) are detachably connected to the main hub sleeve (13) to respectively limit and fix the outer tube and the inner tube; The main wheel rim (11) is a quarter arc structure, main spoke plates (12) adapted to each other are welded on the inner side of the main wheel rim (11), wheel rim lugs (111) are provided at both ends of the main wheel rim (11), bolt through holes are provided on the wheel rim lugs (111), and the main wheel rims (11) are assembled together by means of locking bolts to form an overall arc structure; The secondary wheel hub (2) is an integral disc-shaped structure, which is arranged at an independent end of the heat exchange tube (5); the outer ring tube and the inner ring tube in the heat exchange tube (5) are inserted and fixed on the upper limit position of the secondary wheel hub (2) with the flute tube (4) as the center; the secondary wheel hub (2) comprises a secondary wheel rim (21), a secondary spoke plate (22) and a secondary wheel hub sleeve (23); one end of the flute tube (4) is inserted on the secondary wheel hub sleeve (23) to form another supporting action point of the heat exchange tube bundle body; the outer wheel of the secondary wheel rim (21) is The profile is in the shape of an arc and is used to rotate the secondary hub (2), so that when welding the copper sheet (6), the secondary hub (2) rotates synchronously with the main hub (1), and the copper sheet (6) on the heat exchange tube (5) is welded in sequence; a secondary spoke plate (22) is provided on the inner side of the secondary hub (2), and heat exchange tube limiting holes (221) are arranged in an array on the secondary spoke plate (22); the outer ring tube and the inner ring tube of the heat exchange tube (5) penetrate the heat exchange tube limiting holes (221), so that the heat exchange tube bundle is fixed in the radial direction; The secondary wheel rim (21) is an arc structure, the secondary spoke plate (22) is welded to the inner side of the secondary wheel rim (21), and a secondary wheel hub sleeve (23) is welded at the center of the secondary spoke plate (22) to form an integral structure; The main wheel hub (1) and the auxiliary wheel hub (2) are respectively seated on rollers, and the position of the heat exchange tube (5) is adjusted through the synchronous rotation of the main wheel hub (1) and the auxiliary wheel hub (2), so as to perform the welding operation of the copper sheet (6).

2. The split unconstrained heat exchange tube bundle fixture according to claim 1 is characterized in that: The split unconstrained heat exchange tube bundle fixture further comprises a rotating seat (3) used to support the welding of the copper sheet (6) at the shielding part of the main hub (1) after the main hub (1) is disassembled; the rotating seat (3) comprises a base (31), a rotating disk (32) and a shaft elastic retaining ring (33); The base (31) is used to support the rotating base (3) and fix it on the working platform, and an axle seat (312) is arranged on the base (31); The outer end of the rotating disk (32) is provided with a shaft sleeve (321), and the shaft sleeve (321) is rotatably connected to the shaft seat (312), so that the rotating disk (32) rotates on the base (31); a lever (323) is provided at the inner end of the rotating disk (32) for overlapping the heat exchange tube (5) for rotational support, and replacing the force application point after the main hub (1) is disassembled; The shaft elastic retaining ring (33) is used for assembling the rotating disk (32) and the base (31) to lock the shaft sleeve (321) on the shaft seat (312).

3. The split unconstrained heat exchange tube bundle fixture according to claim 2 is characterized in that: The main spoke plate (12) is a plate-shaped structure. An outer ring tube support groove (121) is provided on the main spoke plate (12) for assembling the outer ring tube support plate (14). An outer ring tube outer semicircular through hole (1211) is provided at the edge of the outer ring tube support groove (121). Outer ring tube outer ear plates (123) are provided on both sides of the outer ring tube outer semicircular through hole (1211) for connecting the outer ring tube support plate (14) to form a detachable structure. ) are surrounded by an inner tube support groove (122) at the extended intersection between the inner tube support grooves (122) and the outer tube support grooves (121) are arranged in a staggered array for assembling the inner tube support plate (15); an inner tube outer semicircular through hole (1221) is provided at the edge of the inner tube support plate (15); inner tube outer ear plates (124) are provided on both sides of the inner tube outer semicircular through hole (1221) for connecting the inner tube support plate (15) to form a detachable structure.

4. The split unconstrained heat exchange tube bundle fixture according to claim 3 is characterized by: The main wheel hub sleeve (13) comprises a center disk (131), a bushing (132), a wheel hub ear plate (133) and a screw (134); The center disk (131) is in the shape of a circular plate. A bushing (132) is provided in the middle of one side of the center disk (131) for assembling the flute tube (4). Screws (134) are provided in the radial direction of the bushing (132) for locking the flute tube (4) on the bushing (132) and achieving radial positioning. A hub ear plate (133) is provided on the outer circle of the other side of the center disk (131). The hub ear plates (133) are arranged in a uniform array and are respectively used to connect the outer ring tube support plate (14) and the inner ring tube support plate (15) to form a detachable structure.

5. The split unconstrained heat exchange tube bundle fixture according to claim 4 is characterized in that: The outer tube support plate (14) is a fan-shaped plate embedded in the outer tube support groove (121); an outer tube inner semicircular through hole (142) is provided at the top of the outer tube support plate (14); the outer tube inner semicircular through hole (142) and the outer tube outer semicircular through hole (1211) on the main spoke plate (12) are combined to form a circular hole, which clamps and fixes the outer tube of the heat exchange tube (5); outer tube inner ear plates (143) are provided on both sides of the outer tube outer semicircular through hole (1211) on one side of the outer tube support plate (14), which are connected to the outer tube outer ear plates (123) on the main spoke plate (12) to form a detachable structure; and an outer tube connecting ear plate (141) is provided at the bottom of the other side of the outer tube support plate (14), which is connected to the hub ear plate (133) on the main hub shaft sleeve (13) to form a detachable structure.

6. The split unconstrained heat exchange tube bundle fixture according to claim 5 is characterized by: The inner tube support plate (15) is a fan-shaped plate embedded between the two outer tube support plates (14); an inner tube inner semicircular through hole (152) is provided at the top of the inner tube support plate (15); the inner tube inner semicircular through hole (152) and the inner tube outer semicircular through hole (1221) on the main spoke plate (12) are combined to form a circular hole, thereby clamping and fixing the inner tube of the heat exchange tube (5); inner tube inner ear plates (153) are provided on both sides of the inner tube inner semicircular through hole (152) on one side of the inner tube support plate (15), and are connected to the inner tube outer ear plates (124) on the main spoke plate (12) to form a detachable structure; and an inner tube connecting ear plate (151) is provided at the bottom of one side of the inner tube support plate (15), and is also connected to the hub ear plate (133) on the main hub shaft sleeve (13), to form a detachable structure.

7. The split unconstrained heat exchange tube bundle fixture according to claim 6 is characterized by: The secondary wheel hub shaft sleeve (23) is a blind hole shaft sleeve (321) arranged at the center of the secondary spoke plate (22) and is used to assemble the flute tube (4); a baffle plate (231) is arranged at one end of the secondary wheel hub shaft sleeve (23), and a mounting hole is arranged in the middle of the baffle plate (231) for assembling the bolt assembly (26); a cone mouth (232) is arranged at the blind hole at the other end of the secondary wheel hub shaft sleeve (23) to facilitate the insertion of the flute tube (4); a sawtooth (233) is arranged on the outer side of the cone mouth (232) for rotating the secondary wheel hub (2) when assembling the flute tube (4); a flute tube flange (25) for connecting the flute tube (4) is arranged at the cone mouth (232); the bolt assembly (26) passes through the baffle plate (231) and is screwed to the flute tube flange (25) to fix the flute tube (4) axially; and a rib plate (24) is arranged between the secondary wheel hub shaft sleeve (23) and the secondary spoke plate (22).

8. The split unconstrained heat exchange tube bundle fixture according to claim 7 is characterized in that: The base (31) comprises a support frame (311) and an axle seat (312); The shaft seat (312) is a double-hanging ear structure and is located on the top of the support frame (311).

9. The split unconstrained heat exchange tube bundle fixture according to claim 8 is characterized in that: The rotating disk (32) is a rotating claw, comprising a shaft sleeve (321), a web (322), a lever (323) and a foot plate (324); The web (322) is a circular plate. A shaft sleeve (321) is provided at the center of one side of the web (322). The shaft sleeve (321) is rotatably mounted on the shaft seat (312) of the base (31) and is locked and fixed by means of a shaft elastic retaining ring (33). A lever through hole (3221) is arrayed on the other side of the web (322). A lever (323) is mounted on the lever through hole (3221). A foot plate (324) is provided between the web (322) and the lever (323). The lever (323) is an L-shaped tube, overlapped with the heat exchange tube bundle, and inserted into the interlaced gap between the connecting ends of the outer ring tube and the inner ring tube in the heat exchange tube (5), forming a cantilevered rotation support point of the heat exchange tube bundle, so that the rotating seat (3) replaces the main hub (1) and the auxiliary hub (2) to rotate synchronously.

10. The method of using the split unconstrained heat exchange tube bundle fixture according to claim 9 is characterized by: The steps include: Step 1. Determine the distance between the two rollers according to the length of the flute tube (4); Step 2. Place the secondary wheel hub (2) on a roller, insert one end of the flute tube (4) into the secondary wheel hub sleeve (23), and connect and fix one end of the flute tube (4) to the flute tube flange (25) through the bolt assembly (26); Step 3. Assemble the main hub sleeve (13) at the other end of the flute tube (4) and secure it with screws (134); Step 4. Mount the main wheel rim (11) and the main and auxiliary plates on the main hub sleeve (13), and assemble the inner tube support plate (15) to limit the inner tube of the heat exchange tube (5); The connecting ends of the inner ring tubes in the heat exchange tubes (5) are sequentially assembled on the outer semicircular through holes (1221) of the inner ring tubes on the main spoke plate (12), the inner semicircular through holes (152) of the inner ring tubes are closed with the outer semicircular through holes (1221) of the inner ring tubes through the inner ring tube support plate (15), and the inner ring tubes are clamped and fixed, and the other ends of the inner ring tubes in the heat exchange tubes (5) are sequentially inserted into the corresponding heat exchange tube limiting holes (221) on the secondary hub (2) to extend out. The inner tube inner ear plate (153) at one end of the inner tube support plate (15) is connected to the inner tube outer ear plate (124) on the main spoke plate (12) correspondingly, and the inner tube connecting ear plate (151) at the other end of the inner tube support plate (15) is connected to the hub ear plate (133) on the main hub sleeve (13) correspondingly, and the inner tube support plate (15) is detachably assembled between the main hub sleeve (13) and the main spoke plate (12); Step 5. Assemble the outer tube support plate (14) to limit the outer tube in the heat exchange tube (5); The connecting ends of the outer ring tubes in the heat exchange tubes (5) are sequentially assembled on the outer semicircular through holes (1211) of the outer ring tubes on the main spoke plate (12), the inner semicircular through holes (142) of the outer ring tubes are closed with the outer semicircular through holes (1211) of the outer ring tubes through the outer ring tube support plate (14), and the outer ring tubes are clamped and fixed, and the other ends of the outer ring tubes in the heat exchange tubes (5) are sequentially inserted into the corresponding heat exchange tube limiting holes (221) on the secondary hub (2) to extend out. The outer ring tube inner ear plate (143) at one end of the outer ring tube support plate (14) is connected to the outer ring tube outer ear plate (123) on the main spoke plate (12) correspondingly, and the outer ring tube connecting ear plate (141) at the other end of the outer ring tube support plate (14) is connected to the hub ear plate (133) on the main hub shaft sleeve (13) correspondingly, so that the outer ring tube support plate (14) is detachably assembled between the main hub shaft sleeve (13) and the main spoke plate (12); Step 6. Assemble the main wheel rim (11) together through the wheel rim lugs (111) at both ends of the main wheel rim (11), place the main wheel hub (1) on another roller, keep the main wheel hub (1) and the secondary wheel hub (2) concentric, and keep the heat exchange tube (5) in a balanced state; Step 7. Synchronously rotate the main wheel hub (1) and the secondary wheel hub (2) to perform welding of the copper sheet (6); First, a level ruler is used to stick to a heat exchange tube (5) to confirm that the heat exchange tube (5) is flush, and then the copper sheet (6) is welded on one side of the secondary hub (2); Secondly, after the main wheel hub (1) and the auxiliary wheel hub (2) rotate one circle, the level ruler is withdrawn and the copper sheets (6) are welded in sequence; Finally, after welding three groups of copper sheets (6), a level ruler is used to check the level of the heat exchange tube (5) and the concentricity of the heat exchange tube bundle; Step 8. When the welded copper sheet (6) is close to the main wheel hub (1), a gap of 80 to 100 mm is reserved; the rotating seat (3) is installed, and the lever (323) is inserted into the interlaced gap between the connecting ends of the outer ring tube and the inner ring tube, replacing the main wheel hub (1) and the secondary wheel hub (2) to rotate synchronously; first remove the main wheel rim (11) and the main spoke plate (12), then remove the outer ring tube support plate (14), remove the inner ring tube support plate (15), and finally remove the main wheel hub sleeve (13); continue to weld the copper sheet (6) until the spatial structure of the copper sheet (6) is completed.

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