A sliding traction system for a nuclear fusion device window plug-in

Abstract

This invention discloses a sliding traction system for a window insert in a nuclear fusion device, relating to the field of nuclear fusion reactor engineering technology. It includes an insert track frame, an insert traction moving track, an insert traction mechanism, and a control system. Employing a linear sliding traction method, and through the coordinated action of an asymmetrically arranged insert guide slider assembly and insert positioning slider assembly, it ensures the insert moves along a precise trajectory. Millimeter-level attitude compensation can be performed in the final stage when the insert flange approaches the window flange, effectively overcoming manufacturing and installation errors and ensuring precise alignment of the insert flange and the vacuum chamber window flange's holes. This invention features a simple structure and reliable control, and is specifically optimized for the special cantilever installation structure and maintenance requirements of window inserts.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion reactor engineering technology, and in particular to a sliding traction system for window inserts in a nuclear fusion device, which enables linear translation of large-load inserts. Background Technology

[0002] In magnetically confined nuclear fusion devices (such as tokamaks), the vacuum chamber integrates numerous functional modules, including key components such as divertors, cladding, and window inserts. These components are subjected to extreme environments during operation, including high heat loads and intense neutron radiation, requiring regular maintenance or replacement. To achieve efficient and safe remote maintenance, various dedicated maintenance systems have been developed.

[0003] For example, Chinese invention patent CN112489820B discloses a multi-functional maintenance platform for heavy-duty components (such as divertors) inside a tokamak device, which realizes the transfer of components in a vacuum chamber through a circumferential track and a radial drive mechanism; Chinese invention patent CN109326362B proposes a circumferentially separable maintenance and transfer system suitable for cladding modules, which uses a gear and rack drive and an auxiliary lifting mechanism to complete the disassembly and assembly of the modules; Chinese patent application CN105261400A discloses a divertor maintenance device based on the collaborative operation of a track trolley and a robotic arm, emphasizing multi-degree-of-freedom motion capability to adapt to complex spatial layouts.

[0004] However, the aforementioned solutions are primarily designed for large, heavy-duty structural components (such as divertors and cladding) located on the inner wall or bottom of the vacuum chamber. Their core lies in circumferential-radial composite motion and multi-degree-of-freedom grasping / lifting, and are not suitable for specialized components like window inserts. Window inserts are typically cantilevered onto window flanges on the side wall of the vacuum chamber, with one end fixed to an external support structure. The main body extends into the vacuum chamber and integrates functional units such as heating antennas, plasma diagnostic windows, or tritium breeding modules. Their maintenance requires not only high load-bearing capacity but, more importantly, high-precision linear alignment within a confined space to ensure strict alignment of the bolt holes between the insert flange and the vacuum chamber window flange, and to achieve a reliable sealing connection.

[0005] Existing maintenance platforms, relying on circumferential or radial motion paths, struggle to provide stable and controllable linear traction in the window area and lack fine-tuning and attitude compensation mechanisms for cantilever structures, easily leading to docking failures or sealing inefficiencies. Therefore, there is an urgent need for a dedicated sliding traction system for window inserts that is structurally simple, precisely positioned, and reliably operated to address the shortcomings of existing technologies in this specific application scenario. Summary of the Invention

[0006] To address the challenges of high load, limited space, high operational precision requirements, and difficult remote operation faced by window inserts in the vacuum chamber of a tokamak device during maintenance, this invention provides a sliding traction system for window inserts in a nuclear fusion device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A sliding traction system for a nuclear fusion device window insert includes an insert track frame, an insert traction moving track, an insert traction mechanism, and a control system. The insert track frame is fixed to the ground and has a combined flange and segmented guide rails for installing inserts. The insert traction moving track includes an auxiliary base frame, a docking track frame, and a basic track frame. The auxiliary base frame is fixed to the ground, and the basic track frame is fixed to the auxiliary base frame. The basic track frame has rack and roller guide rails. The docking track frame is connected to the auxiliary base frame via linear guide rails and can move along it. The docking track frame has sliding guide rails that dock with the segmented guide rails. Insert traction... The mechanism includes a trolley frame, a drive motor assembly, a drive gear shaft assembly, a double gear shaft assembly, a roller shaft assembly, a traction frame, and a swing motor assembly. The roller shaft assembly engages with the roller guide rails on the base track frame. The drive gear shaft assembly meshes with a rack. The drive motor assembly drives the drive gear shaft assembly through the double gear shaft assembly, thereby driving the trolley frame to move along the base track frame. The traction frame is connected to the trolley frame via a hinge. The swing motor assembly is connected to the traction frame to adjust its posture. The control system is used to control the docking and locking of the plug-in traction mechanism with the plug-in and docking track frame, and to drive the plug-in to move along the docked track to the plug-in track frame for installation.

[0009] Beneficial effects:

[0010] 1. This invention is specifically designed for the window plug-in, a special cantilever installation component. It abandons the complex circumferential-radial composite motion mechanism and adopts a high-precision linear sliding traction method, which can well meet the actual needs of the window plug-in to enter and exit the vacuum chamber in a straight line along the axis. It solves the problem that the existing general maintenance platform cannot effectively adapt to the narrow space of the window area and the requirements of straight docking.

[0011] 2. By setting asymmetrically arranged guide slider and positioning slider, and combining the swing fine adjustment mechanism on the traction frame and the posture adjustment unit composed of hydraulic jack, the present invention can achieve millimeter-level fine adjustment when the plug-in approaches the window flange, effectively compensate for manufacturing and installation errors, ensure that the hole positions of the plug-in flange and the vacuum chamber window flange are accurately aligned, and greatly improve the reliability of vacuum sealing.

[0012] 3. This invention only includes core components such as the plug-in track frame, ground traction track, traction trolley and control system. There are no redundant rotation or lifting mechanisms. The overall structure is compact and the control logic is clear, which significantly reduces the system complexity and failure rate and improves the efficiency and safety of maintenance operations.

[0013] 4. In this invention, the traction trolley is equipped with a high-torque drive device and a low-friction guide rail, which can stably traction a window plug weighing several tons to move smoothly along a straight track, avoiding vibration or skewing, and ensuring the structural integrity of the heavy plug during transportation and docking.

[0014] In summary, this invention, through the innovative use of a combination of linear sliding traction and multi-stage fine-tuning, successfully solves the technical challenge of high-precision and high-reliability installation and disassembly of window plugs in nuclear fusion devices, filling the gap in existing maintenance technologies in this specific field, and possesses outstanding practical value and engineering application prospects. Attached Figure Description

[0015] Figure 1a This is an overall schematic diagram of a sliding traction system for a nuclear fusion device window plug-in according to the present invention;

[0016] Figure 1b yes Figure 1a A diagram illustrating the initial installation state of the plugin;

[0017] Figure 1c yes Figure 1a A diagram showing the installation completion status of the plugin;

[0018] Figure 2a This is a schematic diagram of the plug-in track frame;

[0019] Figure 2b yes Figure 2a AA section view in the middle;

[0020] Figure 2c yes Figure 2b Schematic diagram of the combined flange;

[0021] Figure 2d yes Figure 2c BB section view in the middle;

[0022] Figure 3a This is a top view of the plugin;

[0023] Figure 3b This is the plugin's main view;

[0024] Figure 3c This is the left view of the plugin;

[0025] Figure 3d This is a cross-sectional view of the plugin;

[0026] Figure 3e yes Figure 3d Detailed view at point I;

[0027] Figure 3f yes Figure 3d Detailed view at point II;

[0028] Figure 3g This is the main view of the plug-in guide slider component;

[0029] Figure 3h yes Figure 3g BB section view;

[0030] Figure 4a This is a schematic diagram of the main view of the plug-in traction moving track;

[0031] Figure 4b yes Figure 4a A schematic diagram of the left view;

[0032] Figure 4c yes Figure 4b AA section view in the middle;

[0033] Figure 4d yes Figure 4c Detailed view at point I;

[0034] Figure 4e yes Figure 4c Detailed view at point II;

[0035] Figure 4f yes Figure 4b Detailed view at point III;

[0036] Figure 5a This is the main view of the plug-in traction mechanism;

[0037] Figure 5b yes Figure 5a The left view;

[0038] Figure 5c yes Figure 5a Top view;

[0039] Figure 5d yes Figure 5c Schematic diagram of the preload spring assembly;

[0040] Figure 5e yes Figure 5b Schematic diagram of the middle roller shaft assembly;

[0041] Figure 5f yes Figure 5b Schematic diagram of the central drive gear shaft assembly;

[0042] Figure 5g yes Figure 5b Schematic diagram of a double gear shaft assembly;

[0043] Figure 5h yes Figure 5b A schematic diagram of the drive motor assembly;

[0044] Figure 5iyes Figure 5c Front view of the middle traction frame;

[0045] Figure 5j yes Figure 5c Top view of the central traction frame;

[0046] Figure 5k yes Figure 5c Left view of the central traction frame;

[0047] Figure 5l yes Figure 5c A schematic diagram of the traction rod.

[0048] The attached figures are labeled as follows: Plug-in 1, Plug-in track frame 2, Plug-in traction moving track 3, Plug-in traction mechanism 4, Control system 5, Plug-in flange 1.1, Plug-in radial adjustment washer 1.2, Plug-in housing 1.3, Plug-in counterweight 1.5, Plug-in side stop 1.6, Plug-in posture adjustment mechanism 1.7, Screw 1.8, Plug-in posture adjustment block 1.9, Plug-in frame 2.1, Combined flange 2.2, Segmented guide rail 2.3, Positioning pin 2.4, Plug-in mounting flange 2.2.1, Nut mounting block 2.2.2, Plug-in guide slider assembly 1.4.1, Plug-in positioning slider assembly 1.4.2, First slider seat 1.4.1.1, Guide slider 1.4.1.2, First disc spring 1.4.1.3, First slider adjustment block 1.4. 1.4 Second slider seat; 1.4.2.1 Positioning slider; 1.4.2.2 Second disc spring; 1.4.2.3 Second slider adjusting block; 1.4.2.4 Top stop of plug-in flange; 1.9.1 Third disc spring; 1.9.2 Auxiliary base frame; 3.1 Docking rail frame; 3.2 Base rail frame; 3.3 Docking frame body; 3.2.1 Segmented sliding guide rail; 3.2.2 Connecting plate; 3.2.3 Rail frame body; 3.2.4 Linear guide rail and slider assembly; 3.2.5 Segmented linear guide rail adjusting shim; 3.2.6 Limiting assembly; 3.2.7 First locking pin assembly; 3.2.8 Positioning plate; 3.2.9 First motor; 3.2.8.1 First set; 3.2.8.2 Pin; 3.2.8.3 First bearing; 3 2.8.4, First Bearing Seat; 3.2.8.5, Fourth Shaft; 3.2.8.6, Frame; 3.3.1, Rack; 3.3.2, Roller Guide Rail; 3.3.3, Guide Rail Support Plate; 3.3.4, Rack Mounting Plate; 3.3.5, Support Frame; 3.3.6, Trolley Frame; 4.1, Roller Shaft Assembly; 4.2, Drive Gear Shaft Assembly; 4.3, Double Gear Shaft Assembly; 4.4, Drive Motor Assembly; 4.5, Traction Frame; 4.6, Traction Rod; 4.7, Swing Motor Assembly; 4.8, Lock Seat; 4.9, Preload Spring Assembly; 4.10, Second Locking Pin Assembly; 4.11, Hex Head Bolt; 4.12, T-Lock Tongue; 4.13, Roller; 4.2.1, Second Bearing; 4.2.2, Spacer; 4.2.3, First Shaft; 4.2.4, First Pressure Cover; 4.2.5, 4.3.1 First double gear, 4.3.2 Third bearing, 4.3.3 Second shaft, 4.3.4 Second pressure cap, 4.4.1 Second double gear, 4.4.2 Second set, 4.4.3 Second bearing seat, 4.4.4 Fourth bearing, 4.4.4 Connecting seat, 4.4.5 Third shaft, 4.4.6 First gear, 4.4.7 Third pressure cap, 4.4.8 Second gear, 4.5.1 Bracket, 4.5.2 Gear reduction servo motor, 4.5.3 Nylon sleeve, 4.6.1 Sleeve, 4.6.2 Square tube, 4.6.3 Third set, 4.6.4 Pin force sensor, 4.6.5 Limiting plate, 4.6.6 Fifth shaft, 4.7.1 Fourth gear, 4.7.2 Preload spring, 4.10.1 Fourth set, 4.10.2 Bolt.10.3, Guide sleeve 4.10.4. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0050] like Figure 1a , Figure 1b , Figure 1c As shown, a sliding traction system for a nuclear fusion device window insert according to the present invention includes an insert 1, an insert track frame 2, an insert traction moving track 3, an insert traction mechanism 4, and a control system 5. The insert track frame 2 and the insert traction moving track 3 are installed on the ground. The insert traction mechanism 4 is installed on the insert traction moving track 3. The insert 1 is initially placed on the track of the insert track frame 2 and the insert traction moving track 3. The insert traction mechanism 4 can drive the insert traction moving track 3 to dock and lock with the insert track frame 2, and can dock and lock the insert 1, and transport the insert 1 along the docked track to the flange of the insert track frame 2 for installation. The control system 5 is located on the side of the auxiliary base frame 3.1 of the plug-in traction moving track 3. It is used to control the plug-in traction mechanism 4 to dock and drive the plug-in traction moving track 3 to dock and lock with the track on the plug-in track frame 2. The control system 5 controls the plug-in traction mechanism 4 to dock and lock with the plug-in 1, and pulls the plug-in 1 to move along the track to the flange of the plug-in track frame 2. The installation posture is adjusted by the plug-in position adjustment mechanism 1.7, and the plug-in 1 is cantilevered onto the flange of the plug-in track frame 2.

[0051] like Figures 2a-2d As shown, the insert track frame 2 includes an insert frame 2.1, a combined flange 2.2, a segmented guide rail 2.3, and a positioning pin 2.4. The insert frame 2.1 is fixed to the ground. The combined flange 2.2 is mounted on the insert frame 2.1 with screws. The segmented guide rail 2.3 is designed with a segmented structure to improve accuracy and reduce processing difficulty. The segmented guide rail 2.3 is connected to the guide rail pad with screws. The positioning pin 2.4 is installed below the combined flange 2.2 and used for docking and positioning with the insert traction moving track 3. The combined flange 2.2 consists of an insert mounting flange 2.2.1 and a nut mounting block 2.2.2, which are connected to the insert mounting flange 2.2.1 with bolts.

[0052] like Figures 3a-3hAs shown, plug 1 includes a plug flange 1.1, a plug radial adjustment washer 1.2, a plug housing 1.3, a plug bottom slider, a plug counterweight 1.5, a plug side stop 1.6, a plug posture adjustment mechanism 1.7, a screw 1.8, and a plug posture adjustment block 1.9. The plug 1 has a plug flange 1.1 at its front end; the plug radial adjustment washer 1.2 is installed on the back of the plug flange 1.1; the plug housing 1.3 is divided into upper and lower parts, connected by screws; the plug bottom slider is installed at the bottom of plug 1 by screws; the plug counterweight 1.5 is stacked inside the plug housing 1.3; the plug side stop 1.6 is installed on both sides of plug 1 by screws; the plug posture adjustment mechanism 1.7 is threaded onto the combination flange 2.2 when the plug posture needs to be adjusted during plug installation; plug 1 is fastened to the plug track frame 2 by screws 1.8; the plug posture adjustment block 1.9 is installed on the back of the plug flange 1.1 by screws.

[0053] The plug-in bottom slider is of two types: a plug-in guide slider assembly 1.4.1 and a plug-in positioning slider assembly 1.4.2. Two of each type are installed in the bottom groove of the plug-in 1 and cooperate with the segmented guide rail 2.3. The plug-in guide slider assembly 1.4.1 includes an upper first slider seat 1.4.1.1, a guide slider 1.4.1.2 connected to the first slider seat 1.4.1.1 by bolts, and a first disc spring 1.4.1.3 installed inside the guide slider 1.4.1.2. A slider adjustment block 1.4.1.4 is installed on the lower part of the first disc spring 1.4.1.3 to adjust its height; the plug-in positioning slider assembly 1.4.2 includes an upper second slider seat 1.4.2.1, the positioning slider 1.4.2.2 is connected to the second slider seat 1.4.2.1 by bolts, the second disc spring 1.4.2.3 is installed inside the positioning slider 1.4.2.2, and the second slider adjustment block 1.4.2.4 is installed on the lower part of the second disc spring 1.4.2.3 to adjust its height. The insert guide slider assembly 1.4.1 and insert positioning slider assembly 1.4.2, located near the insert flange 1.1, are adjusted by the first slider adjusting block 1.4.1.4 and the second slider adjusting block 1.4.2.4 to have a thickness greater than that of the insert guide slider assembly 1.4.1 and insert positioning slider assembly 1.4.2, located away from the insert flange 1.1. The groove width of the bottom of the insert positioning slider assembly 1.4.2 mating with the guide rail is smaller than the groove width of the insert guide slider assembly 1.4.1 mating with the guide rail. The insert guide slider assembly 1.4.1 ensures that the insert 1 moves linearly on the guide rail, and the insert positioning slider assembly 1.4.2 ensures the coarse positioning of the insert flange 1.1 and the hole of the combined flange 2.2.

[0054] The plug-in side stop 1.6 is used for the final positioning of plug-in 1 and combined flange 2.2.

[0055] The plug-in position adjustment mechanism 1.7 includes a hydraulic jack and a double-headed stud. There are six sets of plug-in position adjustment mechanisms 1.7. When adjusting the installation position of plug-in 1, the plug-in position adjustment mechanism 1.7 passes through the upper and lower mounting holes of the plug-in flange 1.1 and connects to the nut mounting block 2.2.2. The plug-in position is adjusted by the extension and retraction of the hydraulic jack.

[0056] The screw 1.8 is a double-ended stud. After the plug-in 1 is installed in place, one end of the screw 1.8 is installed through the mounting hole of the plug-in flange 1.1 and onto the nut mounting block 2.2.2 of the combined flange 2.2. The other end of the screw 1.8 is screwed into the nut to secure the plug-in flange 1.1.

[0057] The plug-in pose adjustment block 1.9 is installed on the upper back of the plug-in flange 1.1 and consists of a top stop block 1.9.1 on the plug-in flange and a third disc spring 1.9.2 installed inside it to prevent damage to the flange surface of the plug-in 1 during pose adjustment.

[0058] like Figures 4a-4f As shown, the plug-in traction moving track 3 includes an auxiliary base frame 3.1, a docking track frame 3.2, and a basic track frame 3.3. The auxiliary base frame 3.1 is installed on the ground using expansion bolts. The docking track frame 3.2 is installed on both sides of the upper part of the auxiliary base frame 3.1, and the basic track frame 3.3 is installed in the middle of the upper part of the auxiliary base frame 3.1. The docking track frame 3.2 includes a docking frame body 3.2.1, a segmented sliding guide rail 3.2.2, a connecting plate 3.2.3, a track frame body 3.2.4, a linear guide rail and slider assembly 3.2.5, a segmented linear guide rail adjusting shim 3.2.6, a limiting assembly 3.2.7, a first locking pin assembly 3.2.8, and a positioning plate 3.2.9. The docking frame 3.2.1 is welded to the connecting plate 3.2.3 and connected to the linear guide rail and slider assembly 3.2.5 by screws. The track frame 3.2.4 is welded and fixed to the auxiliary base frame 3.1. The linear guide rail and slider assembly 3.2.5 is connected to the track frame 3.2.4 by screws. The segmented linear guide rail adjusting shim 3.2.6 is welded to the docking frame 3.2.1. The segmented sliding guide rail 3.2.2 is connected to the segmented linear guide rail adjusting shim 3.2.6 by screws. The limiting assembly 3.2.7 is welded to the track frame 3.2.4. The first locking pin assembly 3.2.8 is installed at the tail of the docking frame 3.2.1 by bolts. The positioning plate 3.2.9 is installed at the rear of the docking frame 3.2.1 by welding.

[0059] like Figures 4c-4eAs shown, the first locking pin assembly 3.2.8 includes a first motor 3.2.8.1, a first set 3.2.8.2, a pin 3.2.8.3, a first bearing 3.2.8.4, a first bearing housing 3.2.8.5, and a fourth shaft 3.2.8.6. The first set 3.2.8.2 and the first bearing housing 3.2.8.5 are welded and fixed to the docking frame 3.2.1. The first motor 3.2.8.1 is connected to the first bearing housing 3.2.8.5 by screws. The fourth shaft 3.2.8.6 is connected to the first bearing 3.2.8.4 and fixed to the first bearing housing 3.2.8.5. The pin 3.2.8.3 and the fourth shaft 3.2.8.6 are installed in a nut and screw structure. After the docking frame 3.2.1 moves into place, the first motor 3.2.8.1 drives the fourth shaft 3.2.8.6 to rotate, and the screw drives the pin 3.2.8.3 to rotate and extend into the hole of the limiting component 3.2.7. At this time, the first locking pin component 3.2.8 completes the limiting of the docking frame 3.2.1.

[0060] like Figure 4f As shown, the basic track frame 3.3 includes a frame body 3.3.1, a rack 3.3.2, a roller guide rail 3.3.3, a guide rail support plate 3.3.4, a rack mounting plate 3.3.5, and a support frame 3.3.6. The support frame 3.3.6 and the guide rail support plate 3.3.4 are connected to the frame body 3.3.1 by screws. The roller guide rail 3.3.3 is connected to the guide rail support plate 3.3.4 by screws. The rack mounting plate 3.3.5 is welded to the support frame 3.3.6. The rack 3.3.2 is connected to the rack mounting plate 3.3.5 by screws.

[0061] like Figures 5a-5lAs shown, the plug-in traction mechanism 4 includes a trolley frame 4.1, a roller shaft assembly 4.2, a drive gear shaft assembly 4.3, a double gear shaft assembly 4.4, a drive motor assembly 4.5, a traction frame 4.6, a traction rod 4.7, a swing motor assembly 4.8, a lock seat 4.9, a preload spring assembly 4.10, a second locking pin assembly 4.11, a hexagonal head bolt 4.12, and a T-type locking tongue 4.13. The roller shaft assembly 4.2 consists of six sets and is bolted to both sides of the lower part of the trolley frame 4.1. The drive gear shaft assembly 4.3 is bolted to the rear of the trolley frame 4.1. The drive gear shaft assembly 4.3, the double gear shaft assembly 4.4, and the drive motor assembly 4.5 are bolted and meshed with gears and mounted above the roller shaft assembly 4.2 at the rear of the trolley frame 4.1. The traction rod 4.7 is bolted to both sides of the traction frame 4.6. The swing motor assembly 4.8 is bolted to the top of the traction rod 4.7. The lock seat 4.9 is mounted at the front end of the traction rod 4.7. The preload spring assembly 4.10 is welded to the upper part of the traction frame 4.6. The second locking pin assembly 4.11 is bolted to the rear of the trolley frame 4.1. The hexagonal head bolt 4.12 is an independent mounting part used to install the lock seat 4.9. The traction frame is connected to the traction rod, and a T-type locking tongue 4.13 is provided at the end of the traction rod. The T-type locking tongue 4.13 cooperates with the lock seat. After the T-type locking tongue rotates 90°, it is axially locked with the lock seat. The lock seat is connected to the plug flange of the plug-in by hexagonal head bolts.

[0062] like Figure 5e As shown, the roller shaft assembly 4.2 includes a roller 4.2.1, a second bearing 4.2.2, a spacer 4.2.3, a first shaft 4.2.4, and a first pressure cap 4.2.5. The second bearing 4.2.2 is installed on both sides inside the roller 4.2.1, and then they are installed together on the shoulder of the first shaft 4.2.4. The spacer 4.2.3 holds the inner ring of the second bearing 4.2.2, and the roller shaft assembly 4.2.2 is mounted on the trolley frame 4.1 by bolts and the first pressure cap 4.2.5. The plug-in traction mechanism 4 moves along the roller guide rail 3.3.3 via the roller shaft assembly 4.2.

[0063] like Figure 5f As shown, the drive gear shaft assembly 4.3 includes a first double gear 4.3.1, a third bearing 4.3.2, a second shaft 4.3.3, and a second cover 4.3.4. The third bearing 4.3.2 is mounted on both sides of the first double gear 4.3.1, and then the entire assembly is mounted onto the second shaft 4.3.3. The smaller diameter gear in the first double gear 4.3.1 meshes with the rack 3.3.2. The second shaft 4.3.3 is bolted to the bearing of the trolley frame 4.1 via the second cover 4.3.4.

[0064] like Figure 5gAs shown, the double gear shaft assembly 4.4 includes a second double gear 4.4.1, a second set 4.4.2, a second bearing seat 4.4.3, a fourth bearing 4.4.4, a connecting seat 4.4.5, a third shaft 4.4.6, a first gear 4.4.7, and a third pressure cover 4.4.8. The fourth bearing 4.4.4 is installed inside the second bearing housing 4.4.3, and then installed to the left side of the third shaft 4.4.6. The second set 4.4.2 and the second double gear 4.4.1 are then installed on the left side, and the third pressure cover 4.4.8 is bolted to the left end of the third shaft 4.4.6. The connecting seat 4.4.5, the second bearing housing 4.4.3, and the fourth bearing 4.4.4 are installed on the right side of the third shaft 4.4.6. Finally, the first gear 4.4.7 is installed on the right end of the third shaft 4.4.6, and the third pressure cover 4.4.8 is bolted on. The pinion of the second double gear 4.4.1 and the first gear 4.4.7 mesh with the large gear of the first double gear 4.3.1. The second double gear 4.4.1 and the first gear 4.4.7 are connected to the third shaft 4.4.6 via the fourth bearing 4.4.4. The connecting seat 4.4.5 is welded to the trolley frame 4.1 and is located near one end of the first gear 4.4.7.

[0065] like Figure 5h As shown, the drive motor assembly 4.5 includes a second gear 4.5.1, a bracket 4.5.2, and a geared servo motor 4.5.3. The geared servo motor 4.5.3 is bolted to the bracket 4.5.2, and the second gear 4.5.1 is keyed to the geared servo motor 4.5.3. The bracket 4.5.2 is welded to the trolley frame 4.1 and also supports the second double gear 4.4.1, which meshes with the larger gear of the second double gear 4.4.1.

[0066] When the plug-in traction mechanism 4 moves, it is powered by a reduction servo motor 4.5.3, which drives the second gear 4.5.1 to rotate. At the same time, the power is transmitted to the second double gear 4.4.1, the third shaft 4.4.6, and the first gear 4.4.7, which drives the first double gear 4.3.1 to rotate and move on the rack 3.3.2. Under the action of the gear and rack transmission and the roller shaft group 4.2, the plug-in traction mechanism 4 moves linearly along the rack 3.3.2 on the base track frame 3.3.

[0067] like Figure 5i , Figure 5j , Figure 5kAs shown, the traction frame 4.6 includes a nylon sleeve 4.6.1, a tube 4.6.2, a square tube 4.6.3, a third set 4.6.4, a pin force sensor 4.6.5, and a limiting plate 4.6.6. The nylon sleeve 4.6.1 is fitted and fixed to the tube 4.6.2. The tube 4.6.2, square tube 4.6.3, and third set 4.6.4 are connected by welding. The pin force sensor 4.6.5 is installed in the third set 4.6.4. The limiting plate 4.6.6 can be bolted to the trolley frame 4.1. The traction frame 4.6 can rotate around the pin force sensor 4.6.5, and the limiting plate 4.6.6 limits the rotation angle of the traction frame 4.6.

[0068] like Figure 5l As shown, the traction rod 4.7 includes a fifth shaft 4.7.1 and a fourth gear 4.7.2. The fifth shaft 4.7.1 and the sleeve 4.6.2 can rotate at a small angle. During the docking process of the plug 1, the swing motor assembly 4.8 drives the traction rod 4.7 to rotate to adjust the docking posture of the lock seat 4.9.

[0069] The second locking pin assembly 4.11 has the same structure as the first locking pin assembly 3.2.8.

[0070] The control system 5 controls the pose adjustment of the plug-in 1 and the movement of the plug-in traction mechanism 4. For example... Figure 1a As shown in the plug-in 1 state, the hexagonal head bolt 4.12 is connected to the plug-in flange 1.1, and at the same time, the plug-in traction mechanism 4 is connected to the docking rail frame 3.2 through the second locking pin assembly 4.11. At this time, the second locking pin assembly 4.11 enters the hole on the positioning plate 3.2.9.

[0071] When plug 1 needs to be installed onto plug track frame 2, plug traction mechanism 4 pushes plug 1 along the track towards combined flange 2.2. First, control system 5 issues a command, and reduction servo motor 4.5.3 drives second gear 4.5.1 to rotate. At the same time, power is transmitted to second double gear 4.4.1, third shaft 4.4.6 and first gear 4.4.7, driving first double gear 4.3.1 to rotate and move on rack 3.3.2. Under the action of gear and rack transmission and roller shaft assembly 4.2, plug traction mechanism 4 moves linearly along rack 3.3.2 on base track frame 3.3. Simultaneously, the plug-in traction mechanism 4 drives the docking frame 3.2.1 and plug-in 1 to move together along the linear guide rail and slider assembly 3.2.5 until the positioning pin 2.4 enters the hole at the left end of the segmented sliding guide rail 3.2.2. At this time, the second locking pin assembly 4.11 exits the hole on the positioning plate 3.2.9, the plug-in traction mechanism 4 separates from the docking track frame 3.2, and the first locking pin assembly 3.2.8 connects with the limiting assembly 3.2.7, fixing the docking frame 3.2.1 and the track frame 3.2.4. Subsequently, the reduction servo motor 4.5.3 drives the plug-in traction mechanism 4 to continue moving along the rack 3.3.2, and the bottom slider of the plug-in continues to slide along the segmented sliding guide rail 3.2.2 and segmented guide rail 2.3 until the plug-in flange 1.1 approaches the combined flange 2.2. During the above process, after the plug-in 1 passes through the combined flange 2.2, it continues to move, using the ramp machined on the plug-in side stop 1.6 to adjust the radial position of the plug-in 1 and the combined flange 2.2 to ensure the docking accuracy of the hole. Then, control system 5 controls the plug-in position adjustment mechanism 1.7 to pressurize the hydraulic jack, raising plug-in 1 away from the flange end and bringing it into contact with the combined flange 2.2. Next, screw 1.8 is tightened, passing through holes in plug-in flange 1.1, plug-in mounting flange 2.2.1, and nut mounting block 2.2.2. At this point, control system 5 depressurizes the hydraulic jack, removes it, and installs the remaining screw. The bottom slider of the plug-in away from the flange end separates from the segmented guide rail 2.3, while the bottom slider of the plug-in near the flange end contacts the segmented guide rail 2.3 and bears part of the weight of plug-in 1. Plug-in 1 installation is complete.

[0072] When plug 1 needs to be removed, the locking seat 4.9 is installed onto plug flange 1.1 using hexagonal head bolts 4.12, and then the above process is reversed. In summary, in this invention, the cantilever installation of the plug and window flange requires high-precision docking and installation within a confined space, and must meet long-term stability requirements under heavy loads. A segmented nut mounting block is used, pre-installed in segments into the inner groove of the window flange using countersunk bolts; a disc spring is installed inside the bottom slider of the plug to achieve heavy load bearing; an asymmetrical slider layout is adopted, with the plug guide slider assembly and the plug positioning slider assembly working together to ensure that the sliding trajectory deviation meets the requirements; precise docking of the bolts on the drive traction rod with the flange threaded holes is achieved. Within a limited space, this invention uses a gear transmission system to achieve sliding of the plug on the track, and uses the pin shaft on the traction frame to fine-tune the docking deviation; the long straight distance movement of the plug is achieved through a steel structure support, track, and positioning pin.

[0073] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sliding traction system for a window insert in a nuclear fusion device, characterized in that, The system includes a plug-in track frame, a plug-in traction moving track, a plug-in traction mechanism, and a control system. The plug-in track frame is fixed to the ground and has a combination flange and segmented guide rails for installing plug-ins. The plug-in traction moving track includes an auxiliary base frame, a docking track frame, and a base track frame. The auxiliary base frame is fixed to the ground, and the base track frame is fixed to the auxiliary base frame. The base track frame has a rack and roller guide rails. The docking track frame is connected to the auxiliary base frame via a linear guide rail and can move along it. The docking track frame has a sliding guide rail that docks with the segmented guide rails. The plug-in traction mechanism includes a trolley frame, a drive motor assembly, a drive gear shaft assembly, a double gear shaft assembly, a roller shaft assembly, a traction frame, and a swing motor assembly. The roller shaft assembly cooperates with the roller guide rails on the base track frame. The drive gear shaft assembly meshes with the rack. The drive motor assembly drives the drive gear shaft assembly via the double gear shaft assembly, thereby driving the trolley frame to move along the base track frame. The traction frame is connected to the trolley frame via a hinge. The swing motor assembly is connected to the traction frame to adjust its posture. The control system is used to control the insertion traction mechanism to lock the insertion and docking track frame, and to drive the insertion to move along the docked track to the insertion track frame for installation.

2. The sliding traction system for a nuclear fusion device window insert according to claim 1, characterized in that, The combined flange of the plug-in track frame consists of a plug-in mounting flange and a nut mounting block connected by bolts.

3. The sliding traction system for a nuclear fusion device window insert according to claim 1, characterized in that, A first locking pin assembly is provided between the docking track frame and the auxiliary base frame to lock the docking track frame after it has been moved into place.

4. The sliding traction system for a nuclear fusion device window insert according to claim 1, characterized in that, A second locking pin assembly is provided between the trolley frame of the plug-in traction mechanism and the docking rail frame, which is used to lock the plug-in traction mechanism and the docking rail frame together, so that the plug-in traction mechanism drives the docking rail frame to dock with the plug-in rail frame.

5. The sliding traction system for a nuclear fusion device window insert according to claim 1, characterized in that, The traction frame is connected to the trolley frame via a pin force sensor and is equipped with a limit plate to limit the rotation angle.

6. The sliding traction system for a nuclear fusion device window insert according to claim 1, characterized in that, The traction frame is connected to the traction rod, and a T-shaped locking tongue is provided at the end of the traction rod. The T-shaped locking tongue cooperates with the lock seat. After the T-shaped locking tongue rotates 90°, it locks axially with the lock seat. The lock seat is connected to the plug flange of the plug-in by hexagonal head bolts.

7. A sliding traction system for a window insert in a nuclear fusion device according to claim 1, characterized in that, The bottom of the plug-in is provided with multiple plug-in bottom sliders, which include plug-in guide slider assemblies and plug-in positioning slider assemblies. The plug-in guide slider assembly and plug-in positioning slider assembly near the plug-in flange are adjusted by a first slider adjustment block and a second slider adjustment block to make their thickness greater than that of the plug-in guide slider assembly and plug-in positioning slider assembly away from the plug-in flange. Furthermore, the groove width of the positioning slider in the plug-in positioning slider assembly and the guide rail mating surface is smaller than the groove width of the guide slider in the plug-in guide slider assembly and the guide rail mating surface.

8. A sliding traction system for a nuclear fusion device window insert according to claim 7, characterized in that, Both the plug-in guide slider assembly and the plug-in positioning slider assembly have disc springs inside.

9. A sliding traction system for a window insert in a nuclear fusion device according to claim 1, characterized in that, The plug-in is equipped with a plug-in posture adjustment mechanism, which passes through the plug-in flange hole and connects to the nut mounting block in the plug-in track frame, and adjusts the plug-in posture by hydraulic drive.

10. A sliding traction system for a window insert in a nuclear fusion device according to claim 1, characterized in that, The docking rail frame of the plug-in traction moving rail is provided with holes for engaging with the positioning pins on the plug-in rail frame body.

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