High-temperature superconducting Tokamak cold shield assembly assembling system and method

Abstract

The invention discloses a high-temperature superconducting Tokamak cold shield assembly assembling system and method. The high-temperature superconducting Tokamak cold shield assembly assembling system comprises a positioning assembly, a welding assembly, a supporting frame, supporting legs, a locking mechanism and a driving mechanism. The invention relates to the technical field of welding tools. According to the high-temperature superconducting Tokamak cold shield assembly assembling system and method, the supporting frame is arranged to be installed around the lower-layer high-temperature superconducting Tokamak cold shield, the positioning assembly and the welding assembly can be placed on the supporting frame in sequence, and the positioning assembly can abut against the lower-layer high-temperature superconducting Tokamak cold shield by half; the high-temperature superconducting Tokamak cold shield suspended on the upper layer to be put down is positioned and guided, it is guaranteed that the high-temperature superconducting Tokamak cold shield can be accurately in butt joint with the high-temperature superconducting Tokamak cold shield on the lower layer, and then the problem that butt joint dislocation of the heavy high-temperature superconducting Tokamak cold shield is difficult to adjust is solved. And after the positioning assembly is taken down, the welding assembly is replaced, the welding assembly can be driven by the driving mechanism to rotate around the high-temperature superconducting Tokamak cold shield along the supporting frame for welding, and manpower is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding tooling, and in particular to a high-temperature superconducting Tokamak cold shield assembly assembly system and method. Background Art

[0002] High-temperature superconducting tokamak is a major device for magnetic confinement nuclear fusion research in the world. The cold shield assembly is one of the key components of the superconducting tokamak. Since the cold shield assembly is generally large in size, it is usually formed by butt welding of the upper and lower sections, and then welding reinforcement ribs on the periphery. Before welding, the upper and lower sections need to be hoisted when they are butt-jointed. During this process, it is difficult to align them in one go due to the hoisting method. In addition, the cold shield assembly is heavy and difficult to adjust with manual assistance. It takes multiple attempts to align it, which reduces work efficiency. During the welding process, since the height of a single section is also two or three meters, manual welding cannot reach it directly, and it is necessary to build additional steps or use a cart to assist in raising the height. It is more troublesome to weld around a large diameter. Although there are some existing equipment for cylinder welding, such as a cylinder welding device disclosed in publication number CN216758798U, which performs circumferential welding by rotating the cylinder, it is only suitable for small-sized cylinders, and is heavy and difficult to rotate, making it difficult to use such equipment for welding. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a high-temperature superconducting Tokamak cold shield assembly assembly system and method, which solves the problem that the heavy and bulky cold shield assemblies of the nuclear power high-temperature superconducting Tokamak cold shield are difficult to connect before welding and the labor-intensive welding process is wasteful.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A high-temperature superconducting tokamak cold shield assembly system, comprising: A positioning assembly, coaxially positioning the upper high-temperature superconducting tokamak cold shield by abutting against the lower high-temperature superconducting tokamak cold shield; Welding components by moving circumferentially around the joints between the upper and lower sections of the high-temperature superconducting tokamak cold shield, while swinging up and down to weld; A support frame is detachably mounted on the outside of the high-temperature superconducting tokamak cold shield to support welding components or positioning components; A plurality of support legs are evenly installed at the bottom of the support frame, and are used to support the support frame at the periphery of the high-temperature superconducting Tokamak cold shield, and the bottom of the support legs is connected to the surface of the high-temperature superconducting Tokamak cold shield through magnetic force and friction force; The locking mechanism contracts to simultaneously press the bottom of multiple sets of support legs against the surface of the high-temperature superconducting tokamak cold shield to increase friction; The driving mechanism is installed on the periphery of the supporting frame to drive the welding assembly to slide in an annular direction along the track of the supporting frame.

[0005] Preferably, the support frame is composed of two groups of semicircular rings symmetrically arranged, and the cross-section of the semicircular ring is L-shaped, an insertion strip is provided at one end of the outer side of the semicircular ring, and a socket adapted to the insertion strip is provided at the other end of the outer side of the semicircular ring, and the two groups of semicircular rings are connected by plugging the insertion strip and the socket into each other, and fixing ears are provided at both ends of the bottom of the semicircular ring, and the two groups of semicircular rings are fixed by bolts.

[0006] Preferably, the positioning component comprises: A first mounting seat, wherein the bottom of the first mounting seat overlaps the inner bottom surface of the support frame, and the side surface of the first mounting seat is sleeved and overlaps the side edge of the support frame; The cylinders are fixed horizontally on the inner side of the support frame, and multiple groups of cylinders are supplied with gas through the same gas source; A top plate is installed at the output end of the cylinder, wherein the end of the top plate away from the cylinder is a vertical plane and has an oblique angle at the top; Guide wheels, rotatably mounted on the front and rear sides of the top plate and with the tops protruding beyond the bevel surface; The first handle is fixedly connected to the outer side of the first mounting seat and is used for lifting and placing the positioning assembly as a whole.

[0007] Preferably, a plurality of positioning grooves are evenly arranged on the top of the support frame, and positioning blocks corresponding to the positioning grooves are arranged on the inner side of the first mounting seat to position a plurality of positioning components distributed at equal angles along the circumferential direction.

[0008] Preferably, the welding assembly comprises: A second mounting seat, wherein the bottom of the second mounting seat is overlapped with the inner bottom surface of the support frame through a bull's eye bearing, and the side surface of the second mounting seat is sleeved and overlapped with the side edge of the support frame; The welding main machine is fixedly mounted on the top of the second mounting seat, and a mounting frame is provided on the top of the welding main machine; A fixed sleeve is rotatably connected to the inner side of the mounting frame, and a slide rail is installed at the bottom of one side of the fixed sleeve; A welding gun is fixedly inserted into the fixing sleeve, and the welding host is connected to one end of the welding gun through a wiring harness to control the operation of the welding gun; A second handle is arranged through the outside of the second mounting seat, and one end of the second handle is arranged as a threaded section; The driving part is installed on the welding main machine and connected to the fixed sleeve, and drives the fixed sleeve to swing by extending and retracting up and down.

[0009] Preferably, the driving member comprises: A linear motor, the main body of which is installed inside the welding host and the telescopic end of which extends to the outside of the welding host; The bottom end of the T-shaped shaft is rotatably sleeved on the top end of the telescopic end of the linear motor, and both lateral ends of the T-shaped shaft are slidably connected with the slide rails.

[0010] Preferably, the driving mechanism comprises: An annular belt is sleeved on the outer periphery of the supporting frame, a convex tooth is arranged in the middle of the inner side of the annular belt, and an annular groove matching the convex tooth is arranged on the outer side of the supporting frame; The driving machine is detachably mounted on the outside of the supporting frame, the driving machine is equipped with a toothed belt wheel driven by a low-speed motor, and the annular belt passes through the driving machine and meshes with the toothed belt wheel for transmission; The connecting ring penetrates and is fixed on the surface of the endless belt, and can be threadedly connected with the threaded end of the second handle, so that the welding assembly is connected to the endless belt.

[0011] Preferably, the supporting legs include: A telescopic sleeve, wherein two sections of the tube of the telescopic sleeve are locked by fastening bolts, and the top of the telescopic sleeve is rotatably connected to the bottom of the support frame through a hinge seat; The magnetic seat is rotatably connected to the bottom end of the telescopic sleeve, and both sides of the magnetic seat are rotatably connected to side panels. Magnets are embedded in one side of the magnetic seat and the side panel, and an anti-slip rubber ring is also provided on one side of the magnetic seat and outside the magnet.

[0012] Preferably, the locking mechanism comprises: A sliding rope, wherein the bottom end of the telescopic sleeve and the rotating part of the magnetic seat are hollowly arranged, and the sliding rope slides through the hollow hole at the bottom end of the telescopic sleeve; A locker is used to connect the two ends of the sliding rope and pull the two ends towards each other to tighten them; The locking device comprises: A sleeve box, both sides of which are provided with through holes for the sliding rope to pass through; A capstan wheel is rotatably arranged inside the sleeve and connected to the two ends of the winding sliding rope in the same direction, the front side of the capstan wheel is fixedly connected to a ratchet shaft that penetrates to the outside of the sleeve, and the outer end of the ratchet shaft is fixedly connected to a handwheel; A guide seat is arranged on the upper layer of the front side of the sleeve box, a clamping seat is slidably arranged inside the guide seat, and a ratchet tooth matching with the ratchet shaft is arranged at the bottom of the clamping seat, and a pull rod penetrating the guide seat for lifting the clamping seat is arranged on the top of the clamping seat.

[0013] The present invention also discloses a method for assembling a high-temperature superconducting tokamak cold shield assembly, which specifically comprises the following steps: S1. First, clean the surface of the lower high-temperature superconducting Tokamak cold shield, assemble the support frame into a ring and put it on the outside of the lower high-temperature superconducting Tokamak cold shield, then install the positioning assembly on the support frame, start the positioning assembly to press against the lower high-temperature superconducting Tokamak cold shield, and make the support frame coaxial with the high-temperature superconducting Tokamak cold shield; S2, stretching the support legs to be magnetically attracted to the surface of the high-temperature superconducting Tokamak cold shield, then locking the support legs to limit their retraction, and then controlling the locking mechanism to synchronously lock the bottom ends of multiple support legs, so that the bottom ends of the support legs are pressed against the surface of the high-temperature superconducting Tokamak cold shield; S3, hoisting the upper high-temperature superconducting Tokamak cold shield onto the lower high-temperature superconducting Tokamak cold shield, slowly lowering it and aligning it with the lower high-temperature superconducting Tokamak cold shield, and completing the coaxial positioning docking when the bottom of the upper high-temperature superconducting Tokamak cold shield contacts the positioning assembly; S4. Remove the positioning assembly, place the welding assembly on the support frame and start welding; S5. When manually moving the welding assembly, directly push the welding assembly along the support frame in a circumferential direction around the butt joint of the high-temperature superconducting Tokamak cold shield to perform welding; When automatic welding is required, a driving mechanism is put on the outside of the support frame in advance, and the welding assembly is placed and connected to the driving mechanism. The driving mechanism can be started to pull the welding assembly for mobile welding; during the welding process, the swing of the welding assembly is adjusted to adjust the welding angle.

[0014] The present invention provides a high-temperature superconducting tokamak cold shield assembly assembly system and method. Compared with the prior art, it has the following beneficial effects: 1. The high-temperature superconducting tokamak cold screen assembly assembly system and method are provided with a support frame to be installed around the lower high-temperature superconducting tokamak cold screen, on which a positioning assembly and a welding assembly can be placed successively. The positioning assembly can abut the lower high-temperature superconducting tokamak cold screen by half, so as to guide the positioning of the upper suspended high-temperature superconducting tokamak cold screen to be lowered, thereby ensuring that it can accurately dock with the lower high-temperature superconducting tokamak cold screen, thereby avoiding the problem of misalignment and difficulty in adjusting the heavy high-temperature superconducting tokamak cold screen. After the positioning assembly is removed, the welding assembly can be replaced and rotated around the high-temperature superconducting tokamak cold screen along the support frame under the drive of the driving mechanism for welding, which saves manpower. It can also be directly pushed manually without using the driving mechanism, which also saves hand-held manpower.

[0015] 2. The high-temperature superconducting tokamak cold shield assembly assembly system and method can achieve one-level connection of two sets of semicircular rings through the cooperation of the inserts and sleeves on both sides, and then use the docking fixing ears and the bolts thereon to achieve accurate docking and fixation. The use of the inserts and sleeves can save the use of bolts and the installation is also faster.

[0016] 3. The high-temperature superconducting tokamak cold shield assembly assembly system and method adopts a method of directly hanging and placing the positioning assembly on the support frame, which is convenient for direct removal. At the same time, the high-temperature superconducting tokamak cold shield is pneumatically clamped by the cooperation of the cylinder and the top plate, and the support frame can also be fixed synchronously. The cooperation between the top slope of the top plate and the guide wheel is convenient for guiding the suspended and descending high-temperature superconducting tokamak cold shield, facilitating its alignment and easy to use. The cooperation between multiple positioning grooves and positioning blocks can also accurately locate the angle of the assembly, so that the force of multiple positioning assemblies is uniform.

[0017] 4. In the high-temperature superconducting tokamak cold shield assembly assembly system and method, the welding assembly can also be placed directly on the support frame, and the bull's eye bearing at the bottom can increase the smoothness of its sliding. The welding gun can adjust the pitch angle through the drive part to achieve accurate welding, and can also swing up and down evenly to achieve large-area welding, thereby improving the welding quality and being more intelligent.

[0018] 5. The high-temperature superconducting tokamak cold shield assembly assembly system and method, the driving mechanism is driven by the annular belt around the support frame and the driving machine, which can pull the welding assembly to move in a circular direction. The annular belt is elastic and can be directly removed, and the driving machine can also be directly pulled upward, which is convenient for disassembly and assembly. The welding assembly can be conveniently and quickly connected to the annular belt by using the connection ring and the second handle. When the driving mechanism is not in use, the second handle is also convenient for holding and pushing the welding assembly to move, and the functions are diversified.

[0019] 6. The high-temperature superconducting tokamak cold shield assembly assembly system and method utilize the cooperation of multiple sets of support legs to support the support frame that has lost the support of the positioning assembly, and the positioning assembly can position the support of the support legs. The support legs are fixed by magnetic force plus friction force, and the friction force can be strengthened by locking the locking mechanism to ensure the firmness of the connection. The locking mechanism is also relatively simple to operate. One-way locking can be achieved by adopting a ratchet structure, and multiple support legs can be tightened synchronously by tightening the sliding rope. The holder can be pulled up to quickly unlock it, which is quick to operate and does not require the installation of fastening attachment points on the surface of the high-temperature superconducting tokamak cold shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the positioning state of the present invention; Figure 2 It is a schematic diagram of the welding state of the present invention; Figure 3 is a schematic diagram of a support frame of the present invention; Figure 4 is a schematic diagram of a positioning assembly of the present invention; Figure 5 It is a schematic diagram of positioning of the first mounting seat and the semicircular ring of the present invention; Figure 6is a schematic diagram of a welding assembly of the present invention; Figure 7 is a schematic diagram of a driving member of the present invention; Figure 8 is a schematic diagram of the driving mechanism of the present invention; Fig. 9 It is a schematic diagram of the connection between the welding assembly and the endless belt of the present invention; Fig.10 is a schematic diagram of a supporting leg of the present invention; Fig.11 It is an exploded view of the locking device of the present invention.

[0021] In the figure: 1-positioning assembly; 11-first mounting seat; 12-cylinder; 13-top plate; 14-guide wheel; 15-first handle; 16-positioning block; 2-welding assembly; 21-second mounting seat; 22-welding host; 23-mounting frame; 24-fixing sleeve; 25-slide rail; 26-welding gun; 27-second handle; 28-linear motor; 29-T-axis; 3-support frame; 31-semicircle ring; 32-insertion strip; 33-insertion sleeve; 34-fixing ear; 35-positioning groove; 36-ring groove; 37-slot; 4-support leg; 41-telescopic sleeve; 42-magnetic seat; 43-side panel; 44-magnet; 45-anti-slip rubber ring; 5-locking mechanism; 51-sliding rope; 52-locking device; 521-housing box; 522-reel; 523-ratchet shaft; 524-hand wheel; 525-guide seat; 526-card seat; 527-ratchet; 6-driving mechanism; 61-annular belt; 62-convex teeth; 63-driving machine; 64-connecting ring. DETAILED DESCRIPTION

[0022] 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides six technical solutions: Figure 1-Figure 2 A first embodiment is shown: a high temperature superconducting tokamak cold shield assembly assembly system and method, comprising: A positioning assembly 1 is configured to coaxially position an upper high-temperature superconducting tokamak cold shield by abutting against a lower high-temperature superconducting tokamak cold shield; Welding assembly 2, welding by circumferentially moving around the joints of the upper and lower sections of the high-temperature superconducting tokamak cold shield, while swinging up and down to weld; A support frame 3 is detachably mounted on the outside of the high-temperature superconducting tokamak cold shield and is used to support the welding assembly 2 or the positioning assembly 1; A plurality of support legs 4 are evenly installed at the bottom of the support frame 3, and are used to support the support frame 3 at the periphery of the high-temperature superconducting Tokamak cold shield. The bottom of the support legs 4 is connected to the surface of the high-temperature superconducting Tokamak cold shield through magnetic force and friction force; The locking mechanism 5 is configured to simultaneously press the bottoms of the multiple groups of support legs 4 against the surface of the high-temperature superconducting Tokamak cold shield by contraction to increase friction; The driving mechanism 6 is installed on the periphery of the supporting frame 3 to drive the welding assembly 2 to slide in a circular direction along the trajectory of the supporting frame 3 .

[0024] A support frame 3 is provided to be installed around the lower high-temperature superconducting tokamak cold screen, on which a positioning component 1 and a welding component 2 can be placed successively. The positioning component 1 can abut half of the lower high-temperature superconducting tokamak cold screen to guide the positioning of the upper suspended high-temperature superconducting tokamak cold screen to be lowered, thereby ensuring that it can accurately dock with the lower high-temperature superconducting tokamak cold screen, thereby avoiding the problem of misalignment and difficulty in adjusting the heavy high-temperature superconducting tokamak cold screen. After the positioning component 1 is removed, the welding component 2 can be replaced and rotated around the high-temperature superconducting tokamak cold screen along the support frame 3 under the drive of the drive mechanism 6 for welding, saving manpower. It can also be pushed manually without using the drive mechanism 6, which also saves hand-held manpower.

[0025] Figure 3 A second embodiment is shown, which mainly differs from the first embodiment in that: the support frame 3 is composed of two groups of semicircular rings 31 symmetrically arranged, and the cross-section of the semicircular ring 31 is L-shaped, a plug strip 32 is provided at one end of the outer side of the semicircular ring 31, and a socket 33 adapted to the plug strip 32 is provided at the other end of the outer side of the semicircular ring 31, and the two groups of semicircular rings 31 are connected by plugging the plug strip 32 and the socket 33 together, and fixing ears 34 are provided at both ends of the bottom of the semicircular ring 31, and the fixing ears 34 of the two groups of semicircular rings 31 are fixed by bolts.

[0026] The two groups of semicircular rings 31 can be connected once by cooperating with the insert strips 32 and the insert sleeves 33 on both sides, and then the fixed ears 34 and the bolts thereon are used to achieve accurate docking and fixation. The use of the insert strips 32 and the insert sleeves 33 saves the use of bolts and the installation is also faster.

[0027] Figure 4-Figure 5 A third embodiment is shown, which mainly differs from the second embodiment in that the positioning assembly 1 comprises: A first mounting seat 11, the bottom of the first mounting seat 11 overlaps the inner bottom surface of the support frame 3, and the side of the first mounting seat 11 is sleeved and overlapped on the side of the support frame 3; The cylinders 12 are horizontally fixed to the inner side of the support frame 3, and the multiple groups of cylinders 12 are supplied with gas through the same gas source; The top plate 13 is installed at the output end of the cylinder 12, and the end of the top plate 13 away from the cylinder 12 is a vertical plane and has an oblique angle at the top; The guide wheel 14 is rotatably mounted on the front and rear sides of the top plate 13 and the top thereof exceeds the bevel surface; The first handle 15 is fixedly connected to the outer side of the first mounting seat 11 and is used for lifting and placing the positioning assembly 1 as a whole.

[0028] A plurality of positioning grooves 35 are evenly formed on the top of the support frame 3 , and positioning blocks 16 corresponding to and snapping into the positioning grooves 35 are disposed on the inner side of the first mounting seat 11 to position the plurality of positioning components 1 at equal angles along the circumferential direction.

[0029] The positioning component 1 is directly hung and placed on the support frame 3, which is convenient for direct removal. At the same time, the high-temperature superconducting tokamak cold screen is pneumatically clamped by the cooperation of the cylinder 12 and the top plate 13, and the support frame 3 can be fixed synchronously. The cooperation between the top slope of the top plate 13 and the guide wheel 14 is convenient for guiding the suspended and descending high-temperature superconducting tokamak cold screen, facilitating its alignment and easy to use. The cooperation of multiple positioning grooves 35 and the positioning blocks 16 can also accurately locate the angle of the positioning component 1, so that the force of multiple positioning components 1 is uniform.

[0030] Figure 6-Figure 7 A fourth embodiment is shown, which mainly differs from the first embodiment in that the welding assembly 2 comprises: A second mounting seat 21, the bottom of the second mounting seat 21 is overlapped with the inner bottom surface of the support frame 3 through a bull's eye bearing, and the side of the second mounting seat 21 is sleeved and overlapped with the side of the support frame 3; The welding host 22 is fixedly mounted on the top of the second mounting seat 21, and a mounting frame 23 is provided on the top of the welding host 22; A fixed sleeve 24 is rotatably connected to the inner side of the mounting frame 23, and a slide rail 25 is installed at the bottom of one side of the fixed sleeve 24; The welding gun 26 is fixedly inserted into the fixing sleeve 24, and the welding host 22 is connected to one end of the welding gun 26 through a wiring harness to control the operation of the welding gun 26; A second handle 27 is provided through the outside of the second mounting seat 21, and one end of the second handle 27 is provided as a threaded section; The driving member is installed on the welding host 22 and connected to the fixing sleeve 24, and drives the fixing sleeve 24 to swing by extending and retracting up and down.

[0031] The drive components include: A linear motor 28, the main body of which is installed inside the welding host 22 and the telescopic end of which extends to the outside of the welding host 22; The bottom end of the T-shaped shaft 29 is rotatably sleeved on the top end of the telescopic end of the linear motor 28 , and both lateral ends of the T-shaped shaft 29 are slidably connected to the slide rail 25 .

[0032] The welding assembly 2 can also be placed directly on the support frame 3, and the bull's eye bearing at the bottom can be used to increase the smoothness of its sliding. The welding gun 26 can adjust the pitch angle through the drive member for accurate welding, and can also swing up and down evenly to achieve large-area welding, thereby improving the welding quality and being more intelligent.

[0033] Figure 8-Figure 9 A fifth embodiment is shown, which is mainly different from the fourth embodiment in that the drive mechanism 6 comprises: The annular belt 61 is sleeved on the outer periphery of the supporting frame 3. A convex tooth 62 is provided in the middle of the inner side of the annular belt 61, and an annular groove 36 adapted to the convex tooth 62 is provided on the outer side of the supporting frame 3. The annular groove 36 can position the annular belt 61 to prevent it from falling off; The driving machine 63 is longitudinally plugged and installed on the outer side of the supporting frame 3 through a pair of slots 37 fixed to one side of the supporting frame 3. The driving machine 63 has a toothed belt wheel driven by a low-speed motor built in. The endless belt 61 passes through the driving machine 63 and meshes with the toothed belt wheel for transmission; The connecting ring 64 penetrates and is fixed on the surface of the endless belt 61 , and can be threadedly connected to the threaded end of the second handle 64 , so that the welding assembly 2 is connected to the endless belt 61 .

[0034] The driving mechanism 6 is driven by the annular belt 61 around the support frame 3 in cooperation with the driving machine 63, which can pull the welding assembly 2 to move in a circular direction. The annular belt 61 is elastic and can be directly removed, and the driving machine 63 can also be directly pulled out upward, which is convenient for disassembly and assembly. By utilizing the cooperation of the connecting ring 64 and the second handle 64, the welding assembly 2 can be conveniently and quickly connected to the annular belt 61. When the driving mechanism 6 is not in use, the second handle 64 is also convenient for holding and pushing the welding assembly 2 to move, and the functions are diversified.

[0035] Figure 10-11 A sixth embodiment is shown, which is mainly different from the first embodiment in that the support leg 4 comprises: The telescopic sleeve 41, the two sections of the telescopic sleeve 41 are locked by fastening bolts, and the top of the telescopic sleeve 41 is rotatably connected to the bottom of the support frame 3 through a hinge seat; The magnetic seat 42 is rotatably connected to the bottom end of the telescopic sleeve 41. Side panels 43 are rotatably connected to both sides of the magnetic seat 42. Magnets 44 are embedded in one side of the magnetic seat 42 and the side panels 43. Adding side panels 43 with magnets 44 on both sides can increase the magnetic attraction area. An anti-slip rubber ring 45 is also provided on one side of the magnetic seat 42 and located outside the magnet 44.

[0036] The locking mechanism 5 comprises: The sliding rope 51 is hollowly arranged at the bottom end of the telescopic sleeve 41 and the rotating part of the magnetic seat 42, and the sliding rope 51 slides through the hollow hole at the bottom end of the telescopic sleeve 41; The locker 52 is used to connect the two ends of the sliding rope 51 and pull the two ends towards each other to tighten them; The locking device 52 comprises: The sleeve box 521 has through holes on both sides thereof for the sliding rope 51 to pass through; The winch 522 is rotatably disposed inside the sleeve 521 and connected to the two ends of the winding rope 51 in the same direction. The front side of the winch 522 is fixedly connected to a ratchet shaft 523 that penetrates the outside of the sleeve 521, and the outer end of the ratchet shaft 523 is fixedly connected to a hand wheel 524; A guide seat 525 is arranged on the upper front layer of the sleeve box 521, a clamping seat 526 is slidably arranged inside the guide seat 525, and a ratchet 527 adapted to the ratchet shaft 523 is provided at the bottom of the clamping seat 526, and a pull rod penetrating the guide seat 525 for lifting the clamping seat 526 is arranged on the top of the clamping seat 526.

[0037] By utilizing the cooperation of multiple groups of support legs 4, the support frame 3 that has lost the support of the positioning component 1 can be supported, and the positioning component 1 can be used to position the support of the support legs 4. The support legs 4 are fixed by means of magnetic force and friction force, and the friction force can be strengthened by locking the locking mechanism 5, thereby ensuring the firmness of the connection. The locking mechanism 5 is also relatively simple to operate. One-way locking can be achieved by adopting a ratchet structure, and multiple support legs 4 can be tightened synchronously by tightening the sliding rope 51. The holder 526 can be pulled up to quickly unlock it. The operation is quick and there is no need to install fastening attachment points on the surface of the high-temperature superconducting tokamak cold shield.

[0038] The present invention also discloses a method for assembling a high-temperature superconducting tokamak cold shield assembly, which specifically comprises the following steps: S1, first clean the surface of the lower high-temperature superconducting Tokamak cold shield, then plug the two semicircular rings 31 with the insert 32 and the insert sleeve 33 to form a ring, then use bolts to penetrate the fixing ears 34 at the bottom to lock, and then put the support frame 3 as a whole outside the lower high-temperature superconducting Tokamak cold shield; Place multiple positioning assemblies 1 on the support frame 3, so that the positioning block 16 is inserted into the positioning groove 35 to complete the positioning of the positioning assembly 1, start the gas source to control the synchronous extension of multiple cylinders 12, so that the lower half of the top plate 13 is against the lower high-temperature superconducting tokamak cold shield, at this time, the mutual force of the cylinders 12 is offset, so that the support frame 3 and the high-temperature superconducting tokamak cold shield are coaxial; S2, after loosening the fastening bolts of the telescopic sleeve 41, stretch the telescopic sleeve 41 so that the magnetic suction seat 42 is adsorbed on the surface of the high-temperature superconducting tokamak cold shield, and then tighten the fastening bolts to lock the telescopic sleeve 41; Then, hold the sleeve box 521 and rotate the hand wheel 524 to drive the ratchet shaft 523 and the winch 522 to rotate, tighten the sliding rope 51, and then the sliding rope 51 simultaneously tightens the multiple magnetic seats 42, so that the anti-slip rubber ring 45 further presses the surface of the magnetic seat 42, and the support locking of the support leg 4 is completed; S3, hoisting the upper high-temperature superconducting tokamak cold shield onto the lower high-temperature superconducting tokamak cold shield, slowly lowering and aligning with the lower high-temperature superconducting tokamak cold shield, when the bottom of the upper high-temperature superconducting tokamak cold shield contacts the guide wheel 14, it is guided between the multiple top plates 13, and then accurately docks with the lower high-temperature superconducting tokamak cold shield; S4, control the multiple cylinders 12 to contract by the gas source, so that the top plate 13 leaves the high-temperature superconducting tokamak cold shield, and then remove the positioning component 1, and then put the welding component 2 on to start welding; S5, when manually moving the welding assembly 2, directly push the welding assembly 2 along the support frame 3 in a circumferential direction around the joint of the high-temperature superconducting tokamak cold shield through the second handle 27 to perform welding; When automatic welding is required, the driving mechanism 6 can be installed on the high-temperature superconducting tokamak cold shield jacket in advance, the convex teeth 62 of the annular belt 61 are kept stuck in the annular groove 36, and the driving machine 63 is inserted into the slot 37; after the welding assembly 2 is placed, it is moved to the connecting ring 64, and the second handle 27 is screwed into the connecting ring 64, so that the driving machine 63 can be controlled to pull the annular belt 61, and indirectly pull the welding assembly 2 to perform mobile welding; During the welding process, the linear motor 28 can be started to drive the T-shaped shaft 29 to move up and down, and the fixed sleeve 24 can be pushed to swing through the slide rail 25, thereby indirectly driving the welding gun 26 to swing to adjust the welding angle.

[0039] The parameters of the linear motor 28 and the driving machine 63 are both controlled by programs.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature superconducting tokamak cold shield assembly system, characterized in that: include: A positioning assembly, coaxially positioning the upper high-temperature superconducting tokamak cold shield by abutting against the lower high-temperature superconducting tokamak cold shield; Welding components by moving circumferentially around the joints between the upper and lower sections of the high-temperature superconducting tokamak cold shield, while swinging up and down to weld; A support frame is detachably mounted on the outside of the high-temperature superconducting tokamak cold shield to support welding components or positioning components; A plurality of support legs are evenly installed at the bottom of the support frame, and are used to support the support frame at the periphery of the high-temperature superconducting Tokamak cold shield, and the bottom of the support legs is connected to the surface of the high-temperature superconducting Tokamak cold shield through magnetic force and friction force; The locking mechanism contracts to simultaneously press the bottom of multiple sets of support legs against the surface of the high-temperature superconducting tokamak cold shield to increase friction; The driving mechanism is installed on the periphery of the supporting frame to drive the welding assembly to slide in an annular direction along the track of the supporting frame.

2. A high temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The support frame is composed of two groups of semicircular rings arranged axially symmetrically, and the cross-section of the semicircular ring is L-shaped. An insertion strip is arranged at one end of the outer side of the semicircular ring, and a socket adapted to the insertion strip is arranged at the other end of the outer side of the semicircular ring. The two groups of semicircular rings are connected by plugging the insertion strip and the socket together. Both ends of the bottom of the semicircular ring are provided with fixing ears, and the two groups of semicircular rings are fixed by bolts.

3. A high temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The positioning component comprises: A first mounting seat, wherein the bottom of the first mounting seat overlaps the inner bottom surface of the support frame, and the side surface of the first mounting seat is sleeved and overlaps the side edge of the support frame; The cylinders are fixed horizontally on the inner side of the support frame, and multiple groups of cylinders are supplied with gas through the same gas source; A top plate is installed at the output end of the cylinder, wherein the end of the top plate away from the cylinder is a vertical plane and has an oblique angle at the top; Guide wheels, rotatably mounted on the front and rear sides of the top plate and with the tops protruding beyond the bevel surface; The first handle is fixedly connected to the outer side of the first mounting seat and is used for lifting and placing the positioning assembly as a whole.

4. A high temperature superconducting tokamak cold shield assembly system according to claim 3, characterized in that: A plurality of positioning grooves are evenly arranged on the top of the support frame, and positioning blocks corresponding to the positioning grooves are arranged on the inner side of the first mounting seat to position a plurality of positioning components to be distributed at equal angles along the circumferential direction.

5. A high temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The welding assembly comprises: A second mounting seat, wherein the bottom of the second mounting seat is overlapped with the inner bottom surface of the support frame through a bull's eye bearing, and the side surface of the second mounting seat is sleeved and overlapped with the side edge of the support frame; The welding main machine is fixedly mounted on the top of the second mounting seat, and a mounting frame is provided on the top of the welding main machine; A fixed sleeve is rotatably connected to the inner side of the mounting frame, and a slide rail is installed at the bottom of one side of the fixed sleeve; A welding gun is fixedly inserted into the fixing sleeve, and the welding host is connected to one end of the welding gun through a wiring harness to control the operation of the welding gun; A second handle is arranged through the outside of the second mounting seat, and one end of the second handle is arranged as a threaded section; The driving part is installed on the welding main machine and connected to the fixed sleeve, and drives the fixed sleeve to swing by extending and retracting up and down.

6. A high temperature superconducting tokamak cold shield assembly system according to claim 5, characterized in that: The driving member comprises: A linear motor, the main body of which is installed inside the welding host and the telescopic end of which extends to the outside of the welding host; The bottom end of the T-shaped shaft is rotatably sleeved on the top end of the telescopic end of the linear motor, and both lateral ends of the T-shaped shaft are slidably connected with the slide rails.

7. A high temperature superconducting tokamak cold shield assembly system according to claim 5, characterized in that: The driving mechanism comprises: An annular belt is sleeved on the outer periphery of the supporting frame, a convex tooth is arranged in the middle of the inner side of the annular belt, and an annular groove matching the convex tooth is arranged on the outer side of the supporting frame; The driving machine is detachably mounted on the outside of the supporting frame, the driving machine is equipped with a toothed belt wheel driven by a low-speed motor, and the annular belt passes through the driving machine and meshes with the toothed belt wheel for transmission; The connecting ring penetrates and is fixed on the surface of the endless belt, and can be threadedly connected with the threaded end of the second handle, so that the welding assembly is connected to the endless belt.

8. A high temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The supporting legs include: A telescopic sleeve, wherein two sections of the tube of the telescopic sleeve are locked by fastening bolts, and the top of the telescopic sleeve is rotatably connected to the bottom of the support frame through a hinge seat; The magnetic seat is rotatably connected to the bottom end of the telescopic sleeve, and both sides of the magnetic seat are rotatably connected to side panels. Magnets are embedded in one side of the magnetic seat and the side panel, and an anti-slip rubber ring is also provided on one side of the magnetic seat and outside the magnet.

9. A high temperature superconducting tokamak cold shield assembly system according to claim 8, characterized in that: The locking mechanism comprises: A sliding rope, wherein the bottom end of the telescopic sleeve and the rotating part of the magnetic seat are hollowly arranged, and the sliding rope slides through the hollow hole at the bottom end of the telescopic sleeve; A locker is used to connect the two ends of the sliding rope and pull the two ends towards each other to tighten them; The locking device comprises: A sleeve box, both sides of which are provided with through holes for the sliding rope to pass through; A capstan wheel is rotatably arranged inside the sleeve and connected to the two ends of the winding sliding rope in the same direction, the front side of the capstan wheel is fixedly connected to a ratchet shaft that penetrates to the outside of the sleeve, and the outer end of the ratchet shaft is fixedly connected to a handwheel; A guide seat is arranged on the upper layer of the front side of the sleeve box, a clamping seat is slidably arranged inside the guide seat, and a ratchet tooth matching with the ratchet shaft is arranged at the bottom of the clamping seat, and a pull rod penetrating the guide seat for lifting the clamping seat is arranged on the top of the clamping seat.

10. A method for assembling a high-temperature superconducting Tokamak cold shield assembly, implemented based on the high-temperature superconducting Tokamak cold shield assembly assembly system according to any one of claims 1 to 9, characterized in that: The specific steps include: S1. First, clean the surface of the lower high-temperature superconducting Tokamak cold shield, assemble the support frame into a ring and put it on the outside of the lower high-temperature superconducting Tokamak cold shield, then install the positioning assembly on the support frame, start the positioning assembly to press against the lower high-temperature superconducting Tokamak cold shield, and make the support frame coaxial with the high-temperature superconducting Tokamak cold shield; S2, stretching the support legs to be magnetically attracted to the surface of the high-temperature superconducting Tokamak cold shield, then locking the support legs to limit their retraction, and then controlling the locking mechanism to synchronously lock the bottom ends of multiple support legs, so that the bottom ends of the support legs are pressed against the surface of the high-temperature superconducting Tokamak cold shield; S3, hoisting the upper high-temperature superconducting Tokamak cold shield onto the lower high-temperature superconducting Tokamak cold shield, slowly lowering it and aligning it with the lower high-temperature superconducting Tokamak cold shield, and completing the coaxial positioning docking when the bottom of the upper high-temperature superconducting Tokamak cold shield contacts the positioning assembly; S4. Remove the positioning assembly, place the welding assembly on the support frame and start welding; S5. When manually moving the welding assembly, directly push the welding assembly along the support frame in a circumferential direction around the butt joint of the high-temperature superconducting Tokamak cold shield to perform welding; When automatic welding is required, a driving mechanism is put on the outside of the support frame in advance, and the welding assembly is placed and connected to the driving mechanism. The driving mechanism can be started to pull the welding assembly for mobile welding; during the welding process, the swing of the welding assembly is adjusted to adjust the welding angle.

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