A high-temperature superconducting tokamak cold shield assembly system and method

Abstract

This invention discloses a system and method for assembling a cold shield assembly for a high-temperature superconducting tokamak, comprising: a positioning component, a welding component, a support frame, support legs, a locking mechanism, and a driving mechanism; this invention relates to the field of welding fixture technology. This system and method assembles a cold shield assembly for a high-temperature superconducting tokamak by setting a support frame around a lower high-temperature superconducting tokamak cold shield. A positioning component and a welding component can be placed sequentially on the support frame. The positioning component can be positioned by half abutting against the lower high-temperature superconducting tokamak cold shield, guiding the upper high-temperature superconducting tokamak cold shield to be lowered, ensuring accurate docking with the lower high-temperature superconducting tokamak cold shield. This avoids the problem of misalignment and difficulty in adjusting the heavy high-temperature superconducting tokamak cold shield. After the positioning component is removed, the welding component can be replaced by rotating around the high-temperature superconducting tokamak cold shield along the support frame under the drive mechanism, saving manpower.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, specifically to a high-temperature superconducting tokamak cold shield assembly system and method. Background Technology

[0002] High-temperature superconducting tokamak is currently a major device for magnetic confinement nuclear fusion research worldwide. The cold screen assembly is one of the key components of the superconducting tokamak. Because the cold screen assembly is generally large, it is usually formed by welding two sections together, and then welding reinforcing ribs on the outside. Before welding, the two sections need to be hoisted together. During this process, it is difficult to align them on the first attempt due to the hoisting method. Moreover, the cold screen assembly is heavy and difficult to adjust manually. Multiple attempts are required to align them, which reduces work efficiency.

[0003] During the welding process, since the height of a single section can reach two or three meters, manual welding cannot directly reach it. It is necessary to build additional steps or use trolleys or other support to raise the height and weld around the large diameter, which is quite troublesome.

[0004] Although there are some existing devices that can perform cylindrical welding, such as the cylindrical welding device disclosed in publication number CN216758798U, which performs circumferential welding by rotating the cylinder, it is only suitable for small-sized cylinders. Heavy cylinders are difficult to rotate, making it difficult to use such devices for welding. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an assembly system and method for cold shield components of high-temperature superconducting tokamaks, which solves the problems of difficult docking of cold shield components before welding and the high manpower consumption during welding.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature superconducting tokamak cold shield assembly system, comprising:

[0007] The positioning component is used to coaxially position the upper high-temperature superconducting tokamak cold screen by abutting against the lower high-temperature superconducting tokamak cold screen.

[0008] The welding assembly is welded by moving circumferentially around the upper and lower joints of the cold screen of the high-temperature superconducting tokamak, while simultaneously oscillating up and down for welding.

[0009] The support frame is detachably fitted onto the outside of the cold shield of the high-temperature superconducting tokamak to support welding components or positioning components.

[0010] Multiple sets of support legs are evenly installed at the bottom of the support frame to support the support frame on the periphery of the cold screen of the high-temperature superconducting tokamak. The bottom of the support legs is connected to the surface of the cold screen of the high-temperature superconducting tokamak by magnetic force and friction.

[0011] The locking mechanism, by contraction, simultaneously presses the bottom of multiple sets of support legs against the surface of the cold screen of the high-temperature superconducting tokamak to increase friction.

[0012] The drive mechanism, installed on the periphery of the support frame, drives the welding assembly to slide circumferentially along the trajectory of the support frame.

[0013] Preferably, the support frame is composed of two sets of axially symmetrically arranged semicircular rings, and the cross-section of the semicircular rings is L-shaped. One end of the outer side of the semicircular ring is provided with a strip, and the other end of the outer side of the semicircular ring is provided with a sleeve that matches the strip. The two sets of semicircular rings are connected by inserting the strip and the sleeve into each other. Both ends of the bottom of the semicircular rings are provided with fixing ears, and the fixing ears of the two sets of semicircular rings that are close to each other are fixed by bolts.

[0014] Preferably, the positioning component includes:

[0015] The first mounting base has its bottom surface overlapping the inner bottom surface of the support frame, and its side surface is fitted onto the side edge of the support frame.

[0016] The cylinder is horizontally fixed inside the support frame, and multiple cylinders are supplied with air from the same air source.

[0017] A top plate is installed at the cylinder output end, and the end of the top plate away from the cylinder is a vertical plane with an angled opening at the top.

[0018] Guide wheels are rotatably mounted on the front and rear sides of the top plate, with their tops extending beyond the beveled surface;

[0019] The first handle is fixedly connected to the outside of the first mounting base for lifting and placing the entire positioning assembly.

[0020] Preferably, the top of the support frame is provided with a plurality of positioning slots evenly distributed, and the inner side of the first mounting base is provided with a positioning block that is corresponding to the positioning slot, so as to position multiple sets of positioning components distributed at equal angles along the circumference.

[0021] Preferably, the welding assembly includes:

[0022] The second mounting base has its bottom surface connected to the inner bottom surface of the support frame via a bullseye bearing, and its side surface is fitted onto the side of the support frame.

[0023] The welding host is fixedly installed on the top of the second mounting base, and a mounting bracket is provided on the top of the welding host;

[0024] A fixed sleeve is rotatably connected to the inside of the mounting bracket, and a slide rail is installed on one bottom side of the fixed sleeve;

[0025] The welding torch is fixedly inserted inside the fixed sleeve, and the welding host is connected to one end of the welding torch via a wire harness to control the operation of the welding torch.

[0026] The second handle is disposed through the outside of the second mounting base, and one end of the second handle is a threaded section;

[0027] The driving component is installed on the welding host and connected to the fixed sleeve. It drives the fixed sleeve to swing by extending and retracting up and down.

[0028] Preferably, the driving element includes:

[0029] A linear motor, with its main body installed inside the welding host and its telescopic end extending to the outside of the welding host;

[0030] The bottom end of the T-shaped shaft is rotatably mounted on the top of the telescopic end of the linear motor, and both lateral ends of the T-shaped shaft are slidably connected to the slide rail.

[0031] Preferably, the drive mechanism includes:

[0032] An annular belt is fitted around the periphery of the support frame. The annular belt has a toothed protrusion in the middle of its inner side, and the support frame has an annular groove on its outer side that matches the toothed protrusion.

[0033] The drive unit is detachably mounted on the outside of the support frame. The drive unit has a built-in low-speed motor-driven toothed pulley, and the annular belt passes through the drive unit and meshes with the toothed pulley for transmission.

[0034] The connecting ring is fixed through the surface of the annular belt and can be threaded to the threaded end of the second handle, so that the welding assembly is connected to the annular belt.

[0035] Preferably, the support leg includes:

[0036] The telescopic sleeve is secured between its two sections by fastening bolts, and its top end is rotatably connected to the bottom of the support frame via a hinge seat.

[0037] A magnetic base is rotatably connected to the bottom end of a telescopic sleeve. Side plates are rotatably connected to both sides of the magnetic base. Magnets are embedded in one side of both the magnetic base and the side plates. An anti-slip rubber ring is also provided on one side of the magnetic base and around the magnet.

[0038] Preferably, the locking mechanism includes:

[0039] The sliding rope is hollow at the bottom of the telescopic sleeve where it rotates with the magnetic base, and the sliding rope slides through the hollow hole at the bottom of the telescopic sleeve.

[0040] A locking device is used to connect the two ends of a sliding rope and pull the two ends together to tighten them.

[0041] The locking device includes:

[0042] The sleeve box has through holes on both sides for the sliding rope to pass through;

[0043] A winch is rotatably mounted inside the housing and connected to both ends of the winding rope in the same direction. A ratchet shaft that extends through to the outside of the housing is fixedly connected to the front side of the winch, and a handwheel is fixedly connected to the outer end of the ratchet shaft.

[0044] The upper front of the box is provided with a guide seat, and a card seat is slidably provided on the inner side of the guide seat. The bottom of the card seat is provided with ratchet teeth that are adapted to the ratchet shaft. The top of the card seat is provided with a pull rod that passes through the guide seat to lift the card seat.

[0045] This invention also discloses a method for assembling a cold shield assembly for a high-temperature superconducting tokamak, specifically including the following steps:

[0046] S1. First, clean the surface of the lower high-temperature superconducting tokamak cold screen. Then, assemble the support frame into a ring and place it on the outside of the lower high-temperature superconducting tokamak cold screen. Next, install the positioning component on the support frame, activate the positioning component to hold the lower high-temperature superconducting tokamak cold screen in place, and make the support frame and the high-temperature superconducting tokamak cold screen coaxial.

[0047] S2. Lengthen the support legs and magnetically attach them to the surface of the cold screen of the high-temperature superconducting tokamak. Then lock the support legs to restrict retraction. Then control the locking mechanism to lock the bottom ends of multiple support legs synchronously, so that the bottom ends of the support legs are pressed against the surface of the cold screen of the high-temperature superconducting tokamak.

[0048] S3. Hoist the upper high-temperature superconducting tokamak cold screen onto the lower high-temperature superconducting tokamak cold screen, slowly lower it and align it with the lower high-temperature superconducting tokamak cold screen. When the bottom of the upper high-temperature superconducting tokamak cold screen contacts the positioning component, the coaxial positioning docking is completed.

[0049] S4. Remove the positioning component and place the welding component on the support frame to start welding;

[0050] S5. When manually moving the welding assembly, directly push the welding assembly along the circumference of the support frame around the cold screen joint of the high-temperature superconducting tokamak for welding;

[0051] When automatic welding is required, a drive mechanism is first put on the outside of the support frame, the welding component is placed on it and connected to the drive mechanism, and then the drive mechanism is started to pull the welding component to move and weld; during the welding process, the swing of the welding component is adjusted to adjust the welding angle.

[0052] This invention provides a system and method for assembling a cold shield assembly for a high-temperature superconducting tokamak. Compared with the prior art, it has the following advantages:

[0053] 1. The high-temperature superconducting tokamak cold shield assembly system and method involves setting up a support frame around the lower high-temperature superconducting tokamak cold shield. Positioning components and welding components can be placed on the frame sequentially. The positioning component can be positioned and guided by half of it abutting against the lower high-temperature superconducting tokamak cold shield, ensuring that the upper high-temperature superconducting tokamak cold shield is accurately aligned with the lower high-temperature superconducting tokamak cold shield. This avoids the problem of misalignment and difficulty in adjusting the heavy high-temperature superconducting tokamak cold shield. After the positioning component is removed, the welding component can be replaced by rotating around the high-temperature superconducting tokamak cold shield along the support frame under the drive mechanism, saving manpower. Alternatively, it can be manually pushed without the use of a drive mechanism, which also saves manual labor.

[0054] 2. The high-temperature superconducting tokamak cold shield assembly system and method: two sets of semi-circular rings can be connected by inserts and sleeves on both sides. Then, by using the fixing ears and bolts on them, accurate docking and fixing can be achieved. With the help of inserts and sleeves, the amount of bolts used is reduced, and the installation is relatively fast.

[0055] 3. The high-temperature superconducting tokamak cold shield assembly system and method uses a method of directly hanging and placing the positioning components 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, which can also simultaneously fix the support frame. The cooperation between the inclined surface of the top plate and the guide wheel facilitates the guidance of the suspended and descending high-temperature superconducting tokamak cold shield, making it easy to align and use. The cooperation between multiple positioning slots and positioning blocks can also accurately position the angle of the components, so that the force of multiple positioning components is evenly distributed.

[0056] 4. The high-temperature superconducting tokamak cold shield assembly system and method allows the welding components to be directly placed on the support frame. The bottom bullseye bearing can be used to increase the smoothness of its sliding. The welding torch can be adjusted by the drive component to adjust the pitch angle for accurate welding, or it can be swung up and down evenly to achieve large-area welding, which improves the welding quality and has a higher degree of intelligence.

[0057] 5. The high-temperature superconducting tokamak cold shield assembly system and method have a drive mechanism driven by a drive motor via an annular belt around the support frame, which can pull the welding assembly to move circumferentially. The annular belt is elastic and can be directly removed, and the drive motor can also be directly pulled upwards, making disassembly and assembly convenient. Furthermore, by utilizing the cooperation between the connecting ring and the second handle, the welding assembly can be easily and quickly connected to the annular belt. When the drive mechanism is not in use, the second handle is also convenient for hand-holding and pushing the welding assembly to move, making it multifunctional.

[0058] 6. The high-temperature superconducting tokamak cold screen assembly system and method utilizes the cooperation of multiple sets of support legs to support the support frame that has lost the support of the positioning component. The positioning component can position the support legs. The support legs are fixed by magnetic force and friction, and the friction can be strengthened by locking mechanism to ensure the connection is firm. The locking mechanism is also relatively simple to operate. One-way locking can be achieved by using a ratchet structure, and multiple support legs can be tightened simultaneously by tightening the sliding rope. The card holder can be pulled up to quickly unlock. The operation is quick and there is no need to install fastening attachment points on the surface of the high-temperature superconducting tokamak cold screen. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the positioning state of the present invention;

[0060] Figure 2 This is a schematic diagram of the welding state of the present invention;

[0061] Figure 3 This is a schematic diagram of the support frame of the present invention;

[0062] Figure 4 This is a schematic diagram of the positioning component of the present invention;

[0063] Figure 5 This is a schematic diagram showing the positioning of the first mounting base and the semi-circular ring of the present invention;

[0064] Figure 6 This is a schematic diagram of the welding assembly of the present invention;

[0065] Figure 7 This is a schematic diagram of the driving component of the present invention;

[0066] Figure 8 This is a schematic diagram of the driving mechanism of the present invention;

[0067] Figure 9 This is a schematic diagram showing the connection between the welding assembly and the annular belt of the present invention;

[0068] Figure 10 This is a schematic diagram of the support leg of the present invention;

[0069] Figure 11 This is an exploded view of the locking device of the present invention.

[0070] In the diagram: 1-Positioning component; 11-First mounting base; 12-Cylinder; 13-Top plate; 14-Guide wheel; 15-First handle; 16-Positioning block;

[0071] 2-Welding assembly; 21-Second mounting base; 22-Welding main unit; 23-Mounting bracket; 24-Fixing sleeve; 25-Slide rail; 26-Welding torch; 27-Second handle; 28-Linear motor; 29-T-shaft;

[0072] 3-Support frame; 31-Semi-circular ring; 32-Insertion strip; 33-Insertion sleeve; 34-Fixing ear; 35-Positioning groove; 36-Ring groove; 37-Slot;

[0073] 4-Support leg; 41-Telescopic sleeve; 42-Magnetic base; 43-Side plate; 44-Magnet; 45-Anti-slip rubber ring;

[0074] 5-Locking mechanism; 51-Slide rope; 52-Locking device; 521-Casing; 522-Windshaft; 523-Ratchet shaft; 524-Handwheel; 525-Guide seat; 526-Card holder; 527-Ratchet tooth;

[0075] 6-Drive mechanism; 61-Annular belt; 62-Protruding tooth; 63-Driver; 64-Connecting ring. Detailed Implementation

[0076] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0077] This invention provides six technical solutions:

[0078] Figures 1-2 The first embodiment is shown: a high-temperature superconducting tokamak cold shield assembly system and method, comprising:

[0079] Positioning component 1 is used to coaxially position the upper high-temperature superconducting tokamak cold screen by abutting against the lower high-temperature superconducting tokamak cold screen.

[0080] Welding component 2 is welded by moving circumferentially around the upper and lower joints of the cold screen of the high-temperature superconducting tokamak, while simultaneously oscillating up and down for welding.

[0081] Support frame 3 is detachably fitted onto the outside of the cold shield of the high-temperature superconducting tokamak and is used to support welding assembly 2 or positioning assembly 1.

[0082] Support legs 4 are evenly installed in multiple sets at the bottom of support frame 3, used to support support frame 3 on the periphery of the cold screen of high temperature superconducting tokamak. The bottom of support legs 4 is connected to the surface of cold screen of high temperature superconducting tokamak by magnetic force and friction.

[0083] Locking mechanism 5, by contraction, synchronously presses the bottom of multiple sets of support legs 4 against the surface of the cold screen of the high-temperature superconducting tokamak to increase friction;

[0084] The drive mechanism 6 is installed on the periphery of the support frame 3 to drive the welding assembly 2 to slide circumferentially along the trajectory of the support frame 3.

[0085] By setting up a support frame 3 around the lower high-temperature superconducting tokamak cold screen, positioning component 1 and welding component 2 can be placed on it one after the other. Positioning component 1 can be positioned and guided by half of it abutting against the lower high-temperature superconducting tokamak cold screen, ensuring that the upper high-temperature superconducting tokamak cold screen suspended and waiting to be lowered can be accurately docked with the lower high-temperature superconducting tokamak cold screen. This avoids 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 by rotating around the high-temperature superconducting tokamak cold screen along the support frame 3 under the drive mechanism 6, which saves manpower. Alternatively, it can be pushed manually without the drive mechanism 6, which also saves manpower.

[0086] Figure 3 The second embodiment is shown. The main difference from the first embodiment is that the support frame 3 is composed of two sets of axially symmetrically arranged semicircular rings 31, and the cross-section of the semicircular rings 31 is L-shaped. One end of the outer side of the semicircular rings 31 is provided with a strip 32, and the other end of the outer side of the semicircular rings 31 is provided with a sleeve 33 that is adapted to the strip 32. The two sets of semicircular rings 31 are connected by interlocking the strip 32 and the sleeve 33. Both ends of the bottom of the semicircular rings 31 are provided with fixing ears 34, and the fixing ears 34 of the two sets of semicircular rings 31 that are close to each other are fixed by bolts.

[0087] The two sets of semicircular rings 31 can be connected by the insertion strips 32 and the insert sleeves 33 on both sides. Then, by using the fixing ears 34 and the bolts on them, accurate docking and fixing can be achieved. With the help of the insertion strips 32 and the insert sleeves 33, the amount of bolts used is reduced, and the installation is relatively fast.

[0088] Figures 4-5 A third embodiment is shown, the main difference from the second embodiment being that the positioning component 1 includes:

[0089] The first mounting base 11 has its bottom surface overlapping the inner bottom surface of the support frame 3, and its side surface is fitted onto the side of the support frame 3.

[0090] Cylinder 12 is horizontally fixed inside the support frame 3, and multiple sets of cylinders 12 are supplied with air from the same air source.

[0091] The top plate 13 is installed at the output end of the cylinder 12. The end of the top plate 13 away from the cylinder 12 is a vertical plane and the top is provided with an angle.

[0092] Guide wheels 14 are rotatably mounted on the front and rear sides of the top plate 13 and extend beyond the beveled surface;

[0093] The first handle 15 is fixedly connected to the outside of the first mounting base 11 for lifting and placing the entire positioning component 1.

[0094] The top of the support frame 3 is evenly provided with multiple positioning slots 35, and the inner side of the first mounting base 11 is provided with positioning blocks 16 that are corresponding to the positioning slots 35, so as to position multiple sets of positioning components 1 distributed at equal angles along the circumference.

[0095] The positioning component 1 is directly attached to the support frame 3, making it easy to remove. At the same time, the cylinder 12 and the top plate 13 work together to pneumatically clamp the high-temperature superconducting tokamak cold screen, and simultaneously fix the support frame 3. The top slope of the top plate 13 and the guide wheel 14 work together to guide the suspended and descending high-temperature superconducting tokamak cold screen, making it easy to align and use. The cooperation of multiple positioning slots 35 and positioning blocks 16 can also accurately position the angle of the positioning component 1, so that the force on the multiple positioning components 1 is even.

[0096] Figures 6-7 The fourth embodiment is shown, and its main difference from the first embodiment is that the welding assembly 2 includes:

[0097] The second mounting base 21 is connected to the inner bottom surface of the support frame 3 by a bullseye bearing at its bottom, and the side of the second mounting base 21 is fitted and connected to the side of the support frame 3.

[0098] The welding host 22 is fixedly installed on the top of the second mounting base 21, and the top of the welding host 22 is provided with a mounting bracket 23;

[0099] The fixing sleeve 24 is rotatably connected to the inner side of the mounting bracket 23, and a slide rail 25 is installed on one bottom side of the fixing sleeve 24;

[0100] The welding torch 26 is fixedly inserted inside the fixed sleeve 24. The welding host 22 is connected to one end of the welding torch 26 through a wire harness to control the operation of the welding torch 26.

[0101] The second handle 27 is disposed through the outside of the second mounting base 21, and one end of the second handle 27 is configured as a threaded section;

[0102] The driving component is installed on the welding host 22 and connected to the fixed sleeve 24. It drives the fixed sleeve 24 to swing by extending and retracting up and down.

[0103] The driving components include:

[0104] Linear motor 28, the main body is installed inside the welding host 22 and the telescopic end extends to the outside of the welding host 22;

[0105] 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.

[0106] The welding component 2 can also be placed directly on the support frame 3. The bullseye bearing at the bottom can increase the smoothness of its sliding. The welding torch 26 can be adjusted by the drive component to make accurate welding by adjusting the pitch angle. It can also swing up and down evenly to achieve large-area welding, which improves the welding quality and has a higher degree of intelligence.

[0107] Figures 8-9 The fifth embodiment is shown, and its main difference from the fourth embodiment is that the drive mechanism 6 includes:

[0108] An annular belt 61 is fitted around the support frame 3. A tooth 62 is provided in the middle of the inner side of the annular belt 61, and an annular groove 36 that matches the tooth 62 is provided on the outer side of the support frame 3. The annular groove 36 can be used to position the annular belt 61 to prevent it from falling off.

[0109] The drive unit 63 is longitudinally installed on the outside of the support frame 3 by a pair of slots 37 fixed to one side of the support frame 3. The drive unit 63 has a toothed pulley driven by a low-speed motor, and the annular belt 61 passes through the drive unit 63 and meshes with the toothed pulley for transmission.

[0110] The connecting ring 64 is fixed through the surface of the annular 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 annular belt 61.

[0111] The drive mechanism 6 is driven by the drive motor 63 in conjunction with the annular belt 61 surrounding the support frame 3, which can pull the welding component 2 to move circumferentially. The annular belt 61 is elastic and can be removed directly. The drive motor 63 can also be pulled out directly upwards, making disassembly and assembly convenient. With the cooperation of the connecting ring 64 and the second handle 64, the welding component 2 can be easily and quickly connected to the annular belt 61. When the drive mechanism 6 is not used, the second handle 64 is also easy to hold and push the welding component 2 to move, making it versatile in function.

[0112] Figures 10-11 The sixth embodiment is shown, and its main difference from the first embodiment is that the support leg 4 includes:

[0113] The telescopic sleeve 41 is locked between its two sections by fastening bolts, and the top end of the telescopic sleeve 41 is rotatably connected to the bottom of the support frame 3 by a hinge seat.

[0114] The magnetic base 42 is rotatably connected to the bottom end of the telescopic sleeve 41. Side plates 43 are rotatably connected to both sides of the magnetic base 42. Magnets 44 are embedded in one side of both the magnetic base 42 and the side plates 43. The addition of side plates 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 base 42 and around the magnet 44.

[0115] Locking mechanism 5 includes:

[0116] The sliding rope 51 is hollow at the bottom of the telescopic sleeve 41 where it rotates with the magnetic base 42, and the sliding rope 51 slides through the hollow hole at the bottom of the telescopic sleeve 41.

[0117] Locking device 52 is used to connect the two ends of the sliding rope 51 and pull the two ends together to tighten them;

[0118] Locking device 52 includes:

[0119] The sleeve 521 has through holes on both sides for the sliding rope 51 to pass through.

[0120] The winch 522 is rotatably disposed inside the housing 521 and connected to both ends of the winding rope 51 in the same direction. A ratchet shaft 523 that extends through the housing 521 is fixedly connected to the front side of the winch 522, and a handwheel 524 is fixedly connected to the outer end of the ratchet shaft 523.

[0121] The upper front of the box 521 is provided with a guide seat 525, and a card holder 526 is slidably provided on the inner side of the guide seat 525. The bottom of the card holder 526 is provided with a ratchet tooth 527 that is compatible with the ratchet shaft 523. The top of the card holder 526 is provided with a pull rod that passes through the guide seat 525 to lift the card holder 526.

[0122] By utilizing the cooperation of multiple sets of support legs 4, the support frame 3, which has lost the support of the positioning component 1, can be supported. The positioning component 1 can position the support of the support legs 4. The support legs 4 are fixed by magnetic force and friction, and the friction can be strengthened by locking mechanism 5 to ensure the connection is firm. The locking mechanism 5 is also relatively simple to operate. It can achieve one-way locking by using a ratchet structure, and multiple support legs 4 can be tightened simultaneously by tightening the sliding rope 51. The card holder 526 can be pulled up to unlock quickly. The operation is quick and there is no need to install fastening attachment points on the cold screen surface of the high-temperature superconducting tokamak.

[0123] This invention also discloses a method for assembling a cold shield assembly for a high-temperature superconducting tokamak, specifically including the following steps:

[0124] S1. First, clean the surface of the lower high-temperature superconducting tokamak cold screen. Then, insert the two semi-circular rings 31 with the insert strips 32 and the insert sleeves 33 to form a ring. Then, use bolts to lock the bottom through the fixing ear 34. Finally, put the support frame 3 on the outside of the lower high-temperature superconducting tokamak cold screen.

[0125] Multiple positioning components 1 are placed on the support frame 3, and the positioning block 16 is inserted into the positioning groove 35 to complete the positioning of the positioning component 1. The air source is started to control multiple cylinders 12 to extend synchronously, so that the lower half of the top plate 13 abuts against the lower high-temperature superconducting tokamak cold screen. At this time, the interaction force of the cylinders 12 cancels out, so that the support frame 3 and the high-temperature superconducting tokamak cold screen are coaxial.

[0126] S2. After loosening the fastening bolts of the telescopic sleeve 41, stretch the telescopic sleeve 41 so that the magnetic seat 42 is attracted to the surface of the cold screen of the high-temperature superconducting tokamak, and then tighten the fastening bolts to lock the telescopic sleeve 41.

[0127] Then, hold the box 521 and turn the handwheel 524 to drive the ratchet shaft 523 and the winch 522 to rotate, tightening the slide rope 51. At this time, the slide rope 51 simultaneously pulls multiple magnetic seats 42, causing the anti-slip rubber ring 45 to further press the surface of the magnetic seat 42, thus completing the support and locking of the support leg 4.

[0128] S3. Hoist the upper high-temperature superconducting tokamak cold screen onto the lower high-temperature superconducting tokamak cold screen, slowly lower it and align it with the lower high-temperature superconducting tokamak cold screen. When the bottom of the upper high-temperature superconducting tokamak cold screen contacts the guide wheel 14, it is guided by it to the space between multiple top plates 13, and then accurately docks with the lower high-temperature superconducting tokamak cold screen.

[0129] S4. By controlling the contraction of multiple cylinders 12 through the air source, the top plate 13 is removed from the cold screen of the high-temperature superconducting tokamak, and the positioning component 1 can be removed. Then, the welding component 2 can be placed on top to start welding.

[0130] S5. When manually moving the welding component 2, the welding component 2 is directly pushed along the support frame 3 in a circumferential direction around the cold screen joint of the high-temperature superconducting tokamak by the second handle 27.

[0131] When automatic welding is required, the drive mechanism 6 can be pre-installed on the cold shield jacket of the high-temperature superconducting tokamak to keep the protruding teeth 62 of the annular belt 61 engaged in the annular groove 36, and at the same time, the drive motor 63 is inserted into the slot 37; after the welding component 2 is placed, it is moved to the connecting ring 64, and the second handle 27 is screwed into the connecting ring 64, which can control the drive motor 63 to pull the annular belt 61, thereby indirectly pulling the welding component 2 to move and weld;

[0132] 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, which indirectly drives the welding gun 26 to swing to adjust the welding angle.

[0133] Both the linear motor 28 and the drive motor 63 are controlled by program parameters.

[0134] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0135] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0136] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature superconducting tokamak cold shield assembly system, characterized in that: include: The positioning component is used to coaxially position the upper high-temperature superconducting tokamak cold screen by abutting against the lower high-temperature superconducting tokamak cold screen. The welding assembly is welded by moving circumferentially around the upper and lower joints of the cold screen of the high-temperature superconducting tokamak, while simultaneously oscillating up and down for welding. The support frame is detachably fitted onto the outside of the cold shield of the high-temperature superconducting tokamak to support welding components or positioning components. Multiple sets of support legs are evenly installed at the bottom of the support frame to support the support frame on the periphery of the cold screen of the high-temperature superconducting tokamak. The bottom of the support legs is connected to the surface of the cold screen of the high-temperature superconducting tokamak by magnetic force and friction. The locking mechanism, by contraction, simultaneously presses the bottom of multiple sets of support legs against the surface of the cold screen of the high-temperature superconducting tokamak to increase friction. The drive mechanism, installed on the periphery of the support frame, drives the welding assembly to slide circumferentially along the track of the support frame; The positioning component includes: The first mounting base has its bottom surface overlapping the inner bottom surface of the support frame, and its side surface is fitted onto the side edge of the support frame. The cylinder is horizontally fixed inside the support frame, and multiple cylinders are supplied with air from the same air source. A top plate is installed at the cylinder output end, and the end of the top plate away from the cylinder is a vertical plane with an angled opening at the top. Guide wheels are rotatably mounted on the front and rear sides of the top plate, with their tops extending beyond the beveled surface; The first handle is fixedly connected to the outside of the first mounting base for lifting and placing the entire positioning assembly. The welding assembly includes: The second mounting base has its bottom surface connected to the inner bottom surface of the support frame via a bullseye bearing, and its side surface is fitted onto the side of the support frame. The welding host is fixedly installed on the top of the second mounting base, and a mounting bracket is provided on the top of the welding host; A fixed sleeve is rotatably connected to the inside of the mounting bracket, and a slide rail is installed on one bottom side of the fixed sleeve; The welding torch is fixedly inserted inside the fixed sleeve, and the welding host is connected to one end of the welding torch via a wire harness to control the operation of the welding torch. The second handle is disposed through the outside of the second mounting base, and one end of the second handle is a threaded section; The driving component is installed on the welding host and connected to the fixed sleeve. It drives the fixed sleeve to swing by extending and retracting up and down. The driving component includes: A linear motor, with its main body installed inside the welding host and its telescopic end extending to the outside of the welding host; The bottom end of the T-shaped shaft is rotatably mounted on the top of the telescopic end of the linear motor, and both lateral ends of the T-shaped shaft are slidably connected to the slide rail.

2. The high-temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The support frame consists of two sets of axially symmetrical semicircular rings, each with an L-shaped cross-section. One end of each semicircular ring has an insert, and the other end has a sleeve that fits the insert. The two sets of semicircular rings are connected by inserting the insert and sleeve into each other. Both ends of the bottom of each semicircular ring have fixing ears, and the fixing ears of the two sets of semicircular rings that are close to each other are fixed together by bolts.

3. The high-temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The top of the support frame is evenly provided with multiple positioning slots, and the inner side of the first mounting base is provided with positioning blocks that are corresponding to the positioning slots, so as to position multiple sets of positioning components distributed at equal angles along the circumference.

4. The high-temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The drive mechanism includes: An annular belt is fitted around the periphery of the support frame. The annular belt has a toothed protrusion in the middle of its inner side, and the support frame has an annular groove on its outer side that matches the toothed protrusion. The drive unit is detachably mounted on the outside of the support frame. The drive unit has a built-in low-speed motor-driven toothed pulley, and the annular belt passes through the drive unit and meshes with the toothed pulley for transmission. The connecting ring is fixed through the surface of the annular belt and can be threaded to the threaded end of the second handle, so that the welding assembly is connected to the annular belt.

5. The high-temperature superconducting tokamak cold shield assembly system according to claim 1, characterized in that: The supporting leg includes: The telescopic sleeve is secured between its two sections by fastening bolts, and its top end is rotatably connected to the bottom of the support frame via a hinge seat. A magnetic base is rotatably connected to the bottom end of a telescopic sleeve. Side plates are rotatably connected to both sides of the magnetic base. Magnets are embedded in one side of both the magnetic base and the side plates. An anti-slip rubber ring is also provided on one side of the magnetic base and around the magnet.

6. The high-temperature superconducting tokamak cold shield assembly system according to claim 5, characterized in that: The locking mechanism includes: The sliding rope is hollow at the bottom of the telescopic sleeve where it rotates with the magnetic base, and the sliding rope slides through the hollow hole at the bottom of the telescopic sleeve. A locking device is used to connect the two ends of a sliding rope and pull the two ends together to tighten them. The locking device includes: The sleeve box has through holes on both sides for the sliding rope to pass through; A winch is rotatably mounted inside the housing and connected to both ends of the winding rope in the same direction. A ratchet shaft that extends through to the outside of the housing is fixedly connected to the front side of the winch, and a handwheel is fixedly connected to the outer end of the ratchet shaft. The upper front of the box is provided with a guide seat, and a card seat is slidably provided on the inner side of the guide seat. The bottom of the card seat is provided with ratchet teeth that are adapted to the ratchet shaft. The top of the card seat is provided with a pull rod that passes through the guide seat to lift the card seat.

7. A method for assembling a cold shield assembly for a high-temperature superconducting tokamak, implemented based on the high-temperature superconducting tokamak cold shield assembly system according to any one of claims 1-6, characterized in that: Specifically, the following steps are included: S1. First, clean the surface of the lower high-temperature superconducting tokamak cold screen. Then, assemble the support frame into a ring and place it on the outside of the lower high-temperature superconducting tokamak cold screen. Next, install the positioning component on the support frame, activate the positioning component to hold the lower high-temperature superconducting tokamak cold screen in place, and make the support frame and the high-temperature superconducting tokamak cold screen coaxial. S2. Lengthen the support legs and magnetically attach them to the surface of the cold screen of the high-temperature superconducting tokamak. Then lock the support legs to restrict retraction. Then control the locking mechanism to lock the bottom ends of multiple support legs synchronously, so that the bottom ends of the support legs are pressed against the surface of the cold screen of the high-temperature superconducting tokamak. S3. Hoist the upper high-temperature superconducting tokamak cold screen onto the lower high-temperature superconducting tokamak cold screen, slowly lower it and align it with the lower high-temperature superconducting tokamak cold screen. When the bottom of the upper high-temperature superconducting tokamak cold screen contacts the positioning component, the coaxial positioning docking is completed. S4. Remove the positioning component and place the welding component on the support frame to start welding; S5. When manually moving the welding assembly, directly push the welding assembly along the circumference of the support frame around the cold screen joint of the high-temperature superconducting tokamak for welding; When automatic welding is required, a drive mechanism is first put on the outside of the support frame, the welding component is placed on it and connected to the drive mechanism, and then the drive mechanism is started to pull the welding component to move and weld; during the welding process, the swing of the welding component is adjusted to adjust the welding angle.

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