Conveying platform for internal parts of compact fusion reactor and use method of conveying platform

Abstract

The invention provides a conveying platform for internal parts of a compact fusion reactor and a using method of the conveying platform, and belongs to the field of transportation of the internal parts of the fusion reactor. Vacuum outdoor transportation parts of the conveying platform comprise a supporting steel frame assembly, a transportation track assembly, a transportation trolley assembly and a mobile crane assembly, and the supporting steel frame assembly comprises a cage-shaped steel frame; one section of the transportation track assembly is straightly installed in the building channel, the other sections of the transportation track assembly are straightly located in the cage-shaped steel frame and extend to a window in the vacuum chamber, and the movable crane assembly and the transportation trolley are sequentially located on the transportation track assembly. The cable-stayed hanger rail component comprises cable-stayed rods, a bearing steel beam and an annular hanger rail, the cable-stayed rods are installed at the upper end of the regular polygon-shaped frame in an annular array mode, one end of each cable-stayed rod is connected with the upper window collar of the vacuum chamber, and the other end of each cable-stayed rod is connected with the bearing steel beam of the frame. According to the invention, after internal parts on the equatorial plane of the vacuum chamber are quickly conveyed, the internal parts can be conveyed through simple adjustment.

Description

Technical Field

[0001] The present invention belongs to the technical field of transportation of internal components of fusion reactors, and more specifically, is a transportation platform for compact internal components of fusion reactors and a method for using the same. Background Art

[0002] Controlled nuclear fusion uses a fusion device called tokamak to magnetically confine high-temperature plasma, so that the plasma undergoes fusion reaction in a vacuum chamber, releasing huge energy, which is then converted into energy for human use. Fusion reactors are composed of thousands of parts, among which a large number of internal parts including divertors, blankets, fast control coils, passive feedback plates, etc. are installed in the vacuum chamber. There are many types and quantities of internal parts. The smooth assembly of internal parts is an important part of the construction of the fusion reactor host. One of the prerequisites for the assembly of internal parts is that the internal parts are first transported into the vacuum chamber. Since the vacuum chamber of the compact fusion reactor is an annular closed structure with a hollow interior, multiple oblique windows are provided at the top and bottom of the vacuum chamber, and multiple horizontal windows are provided in the middle of the vacuum chamber in an annular distribution. Each window of the vacuum chamber is connected to the building outside the fusion reactor host through a window neck tube. In order to meet the functional design requirements of the vacuum chamber, the cross-sectional size of all vacuum chamber windows is limited. Therefore, after the vacuum chamber is welded into a ring, the transportation methods available for its internal parts are more restricted.

[0003] During the overall assembly of the compact fusion reactor host, when the internal components of the vacuum chamber begin to be assembled, the vacuum chamber segments have been closed, but the middle window neck tube of the vacuum chamber has not been welded and installed. The space between the middle window of the vacuum chamber and the building passage is vacant and there is no fulcrum. If the tooling is directly built on the dewar skirt at the bottom of the compact fusion reactor host, it is necessary to reserve an installation position above the dewar skirt. Due to the complex and compact structure of the compact fusion reactor host, the oblique vacuum chamber lower window neck tube has been installed above the dewar skirt to support the entire vacuum chamber, and there is not enough space to build the support tooling for the vacuum chamber window transport track. Some fusion reactors choose to directly carry out vertical lifting of internal components through the upper window of the vacuum chamber. This method only requires the use of a common crane lifting structure to complete the transfer of internal components, but this method requires relaxing the size limit of the upper window of the vacuum chamber and designing the opening direction of the upper window of the vacuum chamber to be vertically upward to meet the construction conditions for vertical lifting of internal components of the vacuum chamber. In this way, the difficulty of achieving an ultra-high vacuum environment in the vacuum chamber will increase. Therefore, this method is not universal enough and can only be used for large fusion reactors with large upper windows and vertically upward openings.

[0004] At present, some fusion reactors also choose to use multi-degree-of-freedom robotic arms to assemble internal components. The robotic arms in the vacuum chamber are used to pass through the windows in the vacuum chamber to grab the components outside the vacuum chamber to achieve the transportation and assembly of the internal components. Although this method of realizing the transportation function is highly efficient, it requires a large construction space. When the fusion reactor is compact and the internal components weigh several tons, the size of the robotic arm that meets the load requirements has exceeded the allowable operating space of the compact fusion reactor vacuum chamber, and the robotic arm cannot even move. In addition, due to the complex structure of the robotic arm, the design difficulty and production cost are large, and the design cycle is too long, it is not suitable for the assembly of large-mass internal components of compact fusion reactors. The internal components of the compact fusion reactor are installed on the shell inside the vacuum chamber of the fusion reactor host. The vacuum chamber is an annular closed structure with a hollow interior. There are multiple windows on the top and bottom of the vacuum chamber, and multiple horizontal windows distributed in an annular direction are provided on the equatorial plane in the middle of the vacuum chamber. When installing internal components, it is necessary to first transport the internal components into the vacuum chamber. At this time, the vacuum chamber has completed the ring welding, and its internal space can only be connected to the outside of the vacuum chamber through the window of the vacuum chamber. According to the design size of the internal components and the design size of each window of the vacuum chamber, only the window in the vacuum chamber with the largest cross-sectional size (1.5m×1m) can be selected as the transportation path for the internal components, and the window in the vacuum chamber can only transport one internal component at a time. For these internal components, according to the installation position of the internal components, the internal components are divided into upper and lower parts with the equatorial plane of the vacuum chamber as a reference. Since there are certain requirements for the assembly order of the internal components, the internal components above the equatorial plane of the vacuum chamber must be installed first, and then the internal components below the equatorial plane of the vacuum chamber must be installed. When installing the internal components below the equatorial plane of the vacuum chamber, the available installation points above the equatorial plane in the inner shell structure of the vacuum chamber have been covered by the installed upper internal components. The internal components themselves cannot be used as fulcrums for tooling. The installation points below the equatorial plane are about to be covered by the lower internal components. As a result, there is a situation in the vacuum chamber where there are no fulcrums for transport tooling, resulting in a large number of internal components being unable to be transported into the vacuum chamber. Therefore, a transport platform that does not rely on the internal installation points of the vacuum chamber is urgently needed. After the internal components above the equatorial plane of the vacuum chamber are transported, the internal components below the equatorial plane of the vacuum chamber can also be transported into the vacuum chamber. Summary of the invention

[0005] In view of the technical status mentioned in the background technology, in order to overcome the corresponding defects in the prior art, the present invention particularly discloses a transportation platform for internal components of a compact fusion reactor and a method of using the same, which can better solve the problems raised in the background technology.

[0006] In order to overcome the defects of the prior art, those skilled in the art provide the following technical solutions: a transport platform for the internal components of a compact fusion reactor, the main structure of which includes an outer vacuum chamber transport component and an inclined suspension rail component for transporting the internal components on the upper and lower sides of the equatorial plane of the vacuum chamber, respectively, wherein the outer vacuum chamber transport component includes a supporting steel frame assembly, a transport track assembly, a transport trolley assembly, and a mobile crane assembly, the supporting steel frame assembly includes a cage-shaped steel frame, one end of the cage-shaped steel frame is located in the building passage, and the other end extends out of the building passage to the window in the vacuum chamber, one section of the transport track assembly is flatly installed in the building passage, and the remaining sections are flatly located in the cage-shaped steel frame and extend to the window in the vacuum chamber; the mobile crane assembly and the transport trolley are successively located on the transport track assembly and can move linearly along the transport track assembly. The inclined suspension rail components include inclined rods, load-bearing steel beams, and annular suspension rails. The inclined rods are installed in a circular array on the upper end of a regular polygonal frame. The frame is composed of a number of load-bearing steel beams connected end to end. One end of each inclined rod is connected to the upper window collar of the vacuum chamber through a hinge support, and the other end is connected to the load-bearing steel beam.

[0007] Furthermore, the channel steels on both sides of the transport track of the transport track assembly are provided with horizontal guide rails, and the horizontal guide rails are used for the movement and guidance of the mobile crane assembly, and the transport track is provided with long linear guide rails for the movement of the transport trolley component. The transport trolley component includes an XY displacement adjustment component and a transport chassis connected by bolts and arranged up and down, and the transport chassis can reciprocate and position brake on the long linear guide rails, and the XY displacement adjustment component includes an upper plate and a lower plate arranged in parallel up and down, and a pair of linear guide rails are provided between the two plates, and the lower plate is located above the bottom plate fixed on the transport chassis, and the lower plate and the bottom plate are also slidably connected by a pair of linear guide rails, and the two pairs of linear guide rails are perpendicular to each other, and a screw mechanism is also provided between each pair of linear guide rails, and the screw mechanism is used to drive the plate to move linearly along the linear guide rails.

[0008] Specifically, on the first lead screw located at the upper part, a first worm wheel and a second worm wheel that do not contact each other are coaxially fixed by an elastic pin, and on the second lead screw located at the lower part, a first worm and a second worm that do not contact each other are coaxially fixed, and the rotation directions of the two worm wheels and the two worms are opposite to each other; it also includes a third worm located below the first lead screw and parallel to the second lead screw, one section of the third worm is meshed with the second worm wheel, and the other section is driven by the second worm through a transmission worm wheel, and the first worm is meshed with the first worm wheel.

[0009] In practice, both ends of the first worm gear and the second worm gear are respectively in sliding contact with corresponding positioning rings coaxially fixed on the first lead screw, the inner walls of the first worm gear and the second worm gear have a blind hole, the surface of the first lead screw is connected to the elastic pin along its radial direction through a push spring, and under normal conditions, the push spring completely confines the elastic pin within the first lead screw; a driving element is respectively provided in the first worm gear and the second worm gear, and the driving element can drive one end of the elastic pin to be inserted into the blind hole, so that the first worm gear and the second worm gear are fixedly mounted on the first lead screw.

[0010] During manufacturing, the driving element is a hydraulic rod, an electric push rod, or an electromagnet. When the driving element is a hydraulic rod or an electric push rod, the free end of the hydraulic rod or the electric push rod can extend into the push spring to push the elastic pin into the blind hole. When the driving element is an electromagnet, a magnet is also fixed in the elastic pin. When the electromagnet is energized, it can repel the magnet, thereby pushing the elastic pin into the blind hole.

[0011] Furthermore, the mobile crane assembly includes a load-bearing chassis, rollers, a rotary drive motor, and a crane. The load-bearing chassis is used to support the crane. Two opposite sides of the load-bearing chassis are each symmetrically provided with a plurality of pairs of rollers. The upper and lower rollers in each pair of rollers can be clamped on the horizontal guide rail, so that the crane moves along the horizontal guide rail and remains stable. The rotary drive motor drives the gear plate at the bottom of the crane through gears, so that the crane rotates.

[0012] Furthermore, the load-bearing steel beam structure includes an I-beam and a connecting wing plate, and the connecting wing plate is provided with a plurality of bolt holes for connecting with the annular hanging rail; the annular hanging rail includes two semi-annular hanging rails and square steel connecting pieces, each semi-annular hanging rail includes straight rails at both ends and an arcuate rail in the middle, and the straight rails pass through windows in different vacuum chambers, and the inner and outer edges of the arcuate rails are provided with a plurality of connecting plates for connecting with the load-bearing steel beam above by bolts; the square steel connecting piece is connected and fixed to the embedded plate of the ceiling of the building passage outside the fusion reactor main unit by bolts.

[0013] Based on the above transport platform, the present invention also proposes a method for using the transport platform for internal components of a compact fusion reactor. The operation is carried out according to the following steps. First, after the vacuum chamber is welded into a ring, the vacuum chamber outer transport component is built in the building channel outside the vacuum chamber. After the construction is completed, the installation of the internal components begins. The internal components to be installed are placed on the transport trolley assembly using the mobile crane assembly. Then the transport trolley assembly moves along the transport track assembly in the supporting steel frame assembly toward the window in the vacuum chamber. In this way, the internal components above the equatorial plane of the vacuum chamber are transported to the designated positions one by one until the internal components above the equatorial plane of the vacuum chamber are installed. Then, the transport track assembly, the transport trolley assembly, and the mobile crane assembly in the vacuum chamber outer transport component are removed, and the inclined suspension rail assembly is erected using the supporting steel frame assembly to start transporting the internal components below the equatorial plane of the vacuum chamber until the internal components of the vacuum chamber are installed.

[0014] More preferably, during construction, the annular hanging rail in the present invention includes a first hanging rail and a second hanging rail which are curved in a semicircular shape in the middle and straight at both ends; during construction, an internal component starts from one end of the first hanging rail, passes through the window in the vacuum chamber along a straight track to enter the vacuum chamber, and when it reaches above the corresponding position, the internal component is lowered and unloaded, and the empty-loaded sling is retracted and continues to move to the other end of the first hanging rail, or returns to one end of the first hanging rail depending on the construction status of the second hanging rail, and then proceeds to the next transportation; at the same time, another internal component starts from the other end of the second hanging rail, passes through the window in the vacuum chamber along a straight track to enter the other half of the vacuum chamber, and the internal component is lowered and unloaded, and the empty-loaded sling is retracted and continues to move to one end of the second hanging rail, or returns to the other end of the second hanging rail depending on the construction status of the first hanging rail, and then proceeds to the next transportation.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the transportation platform for the internal components of the compact fusion reactor provided by the present invention and the method of using the same can transport the internal components to be installed from the building outside the fusion reactor to the inside of the vacuum chamber of the fusion reactor, providing a construction basis for the assembly of the internal components of the vacuum chamber of the fusion reactor, with a wide range of applications, high transportation efficiency, and large platform load, without the need for excessive design changes and concessions to the vacuum chamber structure, while providing a certain degree of displacement adjustment capability for the assembly of the internal components, and solving the problem that the internal components below the equatorial plane in the vacuum chamber cannot be delivered into the vacuum chamber after the internal components above the equatorial plane in the vacuum chamber are installed, thereby achieving smooth transportation of the internal components. Moreover, under the restriction that the window in the vacuum chamber can only pass one internal component at a time, the structural form of the double hanging rail components in the present invention can perform two sets of construction operations at the same time, greatly improving the overall transportation efficiency of the internal components, and effectively accelerating the overall installation progress of the internal components of the compact fusion reactor.

[0016] Other functions and features of the present invention will be specifically introduced in the subsequent embodiments to provide a full understanding of the concept of the present invention and thus to apply it to production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1-Figure 2 All of them are installation and use structure diagrams of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the transport components outside the vacuum chamber;

[0019] Figure 4 This is a structural diagram of a cage-shaped steel frame;

[0020] Figure 5 A structural diagram of the transport track assembly;

[0021] Figure 6 It is a partial structural diagram of the transport track;

[0022] Figure 7 It is a three-dimensional structural diagram of the XY displacement adjustment component;

[0023] Figure 8 A front view of the transmission structure of the first lead screw and the second lead screw;

[0024] Fig. 9 for Figure 8 a top view of the structure shown;

[0025] Fig.10 Structural diagram of the mobile crane assembly.

[0026] Fig.11 A schematic diagram of the construction of a mobile crane assembly;

[0027] Fig.12 It is a three-dimensional diagram of the inclined suspension rail component;

[0028] Fig.13 It is a partial structural diagram of the inclined suspension rail component;

[0029] Fig.14 This is the installation structure diagram for connecting the wing plate and the I-beam;

[0030] Fig.15 A structural diagram of a hanging rail for a tilted hanging rail assembly;

[0031] Fig.16 A structural diagram of the end face of the hanging rail;

[0032] Fig.17 This is a schematic diagram of a lifting construction.

[0033] As shown in the figure, building passage 1, vacuum chamber outer transport component 2, vacuum chamber 3, inclined suspension rail component 4, vacuum chamber internal component above the equatorial plane 5, mobile crane component 6, support steel frame component 7, vacuum chamber middle window 8, transport track component 9, transport trolley component 10, cage steel frame 11, cantilever support beam 12, I-shaped support leg 13, track support 14, long linear guide rail 15, channel steel 16, horizontal guide rail 17, reinforcement rib 18, connecting grid 19, bottom plate 20, lower plate 21, upper plate 22, first lead screw 23, linear slider 24, linear guide rail 25, connecting block 2 6. second lead screw 27, transport chassis 28, first worm gear 29, positioning ring 30, second worm gear 31, blind hole 32, elastic pin 33, thrust spring 34, third worm 35, transmission worm gear 36, first worm 37, second worm 38, bearing chassis 39, rotary drive motor 40, crane 41, gear plate 42, roller 43, inclined rod 44, load-bearing steel beam 45, annular hanging rail 46, lower articulated support 47, upper articulated support 48, connecting wing plate 49, I-beam 50, square steel connector 51, connecting plate 52, semi-annular hanging rail 53, first hanging rail 54, second hanging rail 55. DETAILED DESCRIPTION

[0034] Based on the several drawings in the embodiments of the present invention and referring to the following text description, a relatively clear and complete introduction of the technical scheme in the embodiments of the present invention can be made. However, it should be understood that the embodiments mentioned in this article are only one or several specific methods of the present invention, and not all implementation structures or method steps.

[0035] As a specific embodiment of the present invention, the transport platform for the internal components of the compact fusion reactor mainly comprises two sets of sub-components, namely, the vacuum chamber transport component 2 and the inclined suspension rail component 4. The layout and use environment of these two sets of sub-components in the main pit of the compact fusion reactor are as follows: Figure 1 , Figure 2 Specifically, for the vacuum chamber outer transport component 2, two are symmetrically arranged on the left and right, that is, they are mirror-imaged with the vacuum chamber 3 as the center, and each component includes four main components, namely, the supporting steel frame component 7, the transport track component 9, the transport trolley component 10, and the mobile crane component 6. The interconnection relationship between these four components is shown in FIG. Figure 3As shown, the support steel frame assembly 7 is located between the building passage 1 and the window 8 in the vacuum chamber, one end of the support steel frame assembly 7 is connected to the inner wall of the building passage 1, and the other end extends out of the building passage 1 and is connected to the building wall through the lower oblique support. The starting section of the transport track assembly 9 is connected to the ground of the building passage 1 through the support legs, the middle section is connected to the support steel frame assembly 7 through the support legs, and the terminal section extends into the vacuum chamber 3 through the window 8 in the vacuum chamber. The transport trolley assembly 10 and the mobile crane assembly 6 move linearly on the transport track assembly 9 through the bottom rollers 43. In addition, in this embodiment, the support steel frame assembly 7 of the outer vacuum chamber transport component 2 is as shown in FIG. Figure 4 As shown, it is composed of a welded cage-shaped steel frame 11 and a cantilevered support beam 12 below. The cage-shaped steel frame 11 located in the building passage 1 is directly fixedly connected to the wall of the building passage 1. The cage-shaped steel frame 11 located between the building and the window 8 in the vacuum chamber is in a cantilever-like state. The steel frame is supported and fixed by the cantilevered support beam 12 arranged on the wall of the building. At the same time, the cage-shaped steel frame 11 also provides a certain degree of protection for construction equipment and workers.

[0036] As a specific implementation structure, the transport track assembly 9 of the vacuum chamber transport component 2 is modularly designed to facilitate the construction of the transport tooling structure. Its main structure is as follows: Figure 5 As shown, it is composed of a long linear guide rail 15, a track support 14, and an I-shaped support leg 13. Multiple I-shaped support legs 13 connect the track supports 14 in pairs and provide support and leveling functions for them. The track support 14 provides support and fixation for the long linear guide rail 15. The terminal section of the transport track is located at the lower edge of the window 8 in the vacuum chamber, and extends into the vacuum chamber 3, and is supported by the tooling structure inside the vacuum chamber. When making it specifically, the structure of each track support 14 module is as follows Figure 6 As shown, it includes channel steel 16, connecting grid 19, horizontal guide rail 17, long linear guide rail 15, and reinforcing rib 18. The connecting grid 19 is located between two channel steels 16, and reinforcing ribs 18 are provided on both sides of the channel steel 16 to improve the structural strength. A horizontal guide rail 17 is provided above the channel steel 16 to support the mobile crane to perform reciprocating motion.

[0037] As for the structure of the transport trolley assembly 10 outside the vacuum chamber transport component 2, please refer to Figure 7As shown, it mainly includes two parts: an XY displacement adjustment component and a transport chassis 28: the XY displacement adjustment component is a double-layer stacking structure, the upper layer of which includes two upper and lower plates, two linear guides 25, four linear sliders 24 and a lead screw, the upper plate 22 is used to support the internal components to be transported, the upper plate 22 is connected to the two linear guides 25 on the lower plate 21 through four linear sliders 24, a lead screw is arranged in parallel between the two linear guides 25, a lead screw support is installed on the lead screw and connected to the upper plate 22, driving the upper plate 22 to move along the guide rails, and fixed bearings are provided at both ends of the lead screw. The lower layer includes a bottom plate 20, two linear guide rails 25, four linear sliders 24 and a lead screw. The bottom plate 20 is used to connect the XY displacement adjustment assembly with the transport chassis 28. The bottom plate 20 has connecting bolt holes on both sides. The bottom plate 20 is connected to the linear slider 24 through the linear guide rail 25. A lead screw is arranged parallel between the two linear guide rails 25. The lead screw is equipped with a lead screw support and connected to the upper structure. Fixed bearings are provided at both ends of the lead screw. The upper and lower layers of the transport trolley assembly 10 have similar structures. The guide rails are perpendicular to each other, and the coordinated movement realizes the high-precision displacement of the internal components on the horizontal plane.

[0038] In more detail, the transport chassis 28 in this embodiment is a rail-guided transport vehicle with driving, positioning and braking functions, and can reciprocate on the long linear guide rail 15 on the transport track. The transport chassis 28 is provided with raised connection blocks 26 and connection bolt holes on both sides, and is connected to the XY displacement adjustment assembly through four connection bolts. After the transport vehicle enters the vacuum chamber, the four connection bolts are removed, and the XY displacement adjustment assembly and the internal components on the equatorial plane of the vacuum chamber are separated from the transport chassis 28 by using other tooling in the vacuum chamber 3, and then transported to the installation position for assembly. During the assembly process, the XY displacement adjustment assembly is used to enable the internal components to be adjusted in the XY direction with high precision.

[0039] As an optimization design, Figure 7-Figure 9 As shown, in this design, it is necessary to coaxially fix a first worm wheel 29 and a second worm wheel 31 that do not contact each other on the first lead screw 23 located at the top through an elastic pin 33, and coaxially fix a first worm 37 and a second worm 38 that do not contact each other on the second lead screw 27 located at the bottom, or directly process two sections of worms with different rotation directions on one shaft, and the rotation directions between the two worm wheels and between the two worms are opposite to each other. The main purpose is to be able to perform two different directions of transmission when one transmission is selected, so that when the lower plate 21 moves in one direction, the upper plate 22 can choose to move to one side or the opposite side, thereby improving the flexibility of movement, synthesizing different trajectories, and improving the efficiency of moving to the specified position. At the same time, in this embodiment, it also includes a third worm 35 that is located below the first lead screw 23 and is parallel to the second lead screw 27, as shown in FIG. Fig. 9, one section of the third worm 35 is meshed with the second worm wheel 31, and the other section is driven by the second worm 38 through a transmission worm wheel 36, and the first worm 37 is meshed with the first worm wheel 29. In addition, both ends of the first worm wheel 29 and the second worm wheel 31 are in sliding contact with the corresponding positioning ring 30 coaxially fixed on the first lead screw 23, that is, the sliding ring limits the installation position of the worm wheel, and only allows it to rotate but not move axially. During manufacturing, a blind hole 32 needs to be processed on the inner wall of the first worm wheel 29 and the second worm wheel 31. During installation, the surface of the first lead screw 23 is connected to an elastic pin 33 along its radial direction through a push spring 34, and under normal conditions, this push spring 34 completely confines the elastic pin 33 within the first lead screw 23, that is, the surface of the first lead screw 23 is not exposed. In addition, a driving element is provided in each of the first worm gear 29 and the second worm gear 31 . When the driving element is turned on, one end of the elastic pin 33 can be driven to insert into the blind hole 32 , so that the first worm gear 29 and the second worm gear 31 are fixedly installed with the first screw 23 . When in use, for example, the elastic pin 33 corresponding to the first worm gear 29 is ejected into the blind hole 32 inside the first worm gear 29, then the first worm gear 29 forms a transmission connection with the first lead screw 23, while the second worm gear 31 has no transmission connection with the first lead screw 23. At this time, the first lead screw 23 rotates, and the first worm 37 rotates through the first worm gear 29, and then the second lead screw 27 rotates coaxially; when the first worm gear 29 is disconnected from the first lead screw 23, that is, the corresponding elastic pin 33 is retracted, and the second worm gear 31 is transmission-connected with the first lead screw 23 through the corresponding elastic pin 33, the rotation of the first lead screw 23 will be transmitted through the second worm gear 31 and the third worm 35, the transmission worm gear 36 and the second worm 38. Since the rotation direction of the second worm gear 31 is opposite to that of the first worm gear 29, the second worm gear 38 at this time rotates with the second lead screw 27 in the opposite direction, so that the relative movement direction of the corresponding plate changes. Regardless of which worm gear is in transmission connection with the first lead screw 23, because the other worm gear is out of transmission connection with the first lead screw 23, a movable sleeve is formed, so it will not get stuck because two sets of worm gear mechanisms with opposite rotation directions are installed on the same lead screw, which not only achieves the purpose of enabling the linked second lead screw 27 to make two steering choices when the first lead screw 23 rotates, but also ensures that it will not get stuck. Specifically in practice, the driving element can be a hydraulic rod, an electric push rod, or an electromagnet. When the driving element is a hydraulic rod or an electric push rod, the free end of the hydraulic rod or the electric push rod can extend into the push spring 34, thereby pushing the elastic pin 33 into the blind hole 32. When the hydraulic rod or the electric push rod retreats, the push spring 34 pulls back the elastic pin 33. When the driving element is an electromagnet, a magnet is also fixed in the elastic pin 33, and the installation direction makes the two repel each other. When the electromagnet is energized, it can immediately repel the magnet, and then the elastic pin 33 is pushed into the blind hole 32, thereby realizing the transmission connection between the corresponding worm gear and the first screw 23.In the above embodiments, the first worm gear 29 and the second worm gear 31 may be installed on the second lead screw 27, and the other corresponding structures may be installed on the first lead screw 23, so that the second lead screw 27 becomes an active component.

[0040] During the specific production, the structure of the mobile crane assembly 6 is as follows Fig.10 As shown, it includes components such as a chassis, rollers 43, a rotary drive motor 40, and a crane 41, wherein the chassis is a square frame with a total of 8 rollers 43 symmetrically arranged on both sides, and the upper and lower rollers 43 can be clamped on the horizontal guide rail 17 of the transport track to enable the crane 41 to move along the horizontal guide rail 17 and remain stable; the crane 41 is connected to the chassis through a gear plate 42 at the bottom, and the rotary drive motor 40 is used to drive the crane 41 to rotate along the axis of the column.

[0041] When the vacuum chamber outer transport component 2 in the above embodiment is erected, the construction process is shown as follows Fig.11 As shown, first, the transport track is constructed in the building passage 1. First, two track support 14 modules are fixed, and then the mobile crane is installed on the horizontal guide rail 17 to start constructing the remaining track support 14 modules. The next section of the track support 14 module is hoisted to the corresponding support leg by the mobile crane and installed and welded. The transfer hoisting and installation welding operations are repeated to gradually complete the construction of the transport track. After the installation of the transport tooling structure is completed, the mobile crane can continue to assist in the transportation of the internal components, so that the internal components to be installed in the building passage 1 are hoisted to the transport trolley.

[0042] As a specific implementation, the inclined suspension rail assembly 4 includes three components, namely, inclined suspension rods 44, load-bearing steel beams 45, and annular suspension rails 46. The conditions of each component in the compact fusion reactor vacuum chamber 3 are as follows: Figure 2 As shown, the interconnection relationship between the components is as follows Fig.12 As shown, there are 8 inclined tie rods 44 in total. One end of each inclined tie rod 44 is welded to the upper window collar of the vacuum chamber through an upper hinge support, and the other end of the inclined tie rod 44 is connected to the corresponding load-bearing steel beam 45 through a lower hinge support. The load-bearing steel beams 45 are distributed in a ring to form an equilateral octagonal structure and are welded to each other. Each load-bearing steel beam 45 is provided with a bolt hole, which is connected to the lower annular hanging rail 46 through bolts. The annular hanging rail 46 is composed of two semi-annular hanging rails 53 distributed symmetrically. The inner and outer circles of the hanging rails are provided with connecting plates 52 that are bolted to the upper load-bearing steel beam 45. A plurality of square steel connectors 51 are provided above both ends of each hanging rail, and the steel plates above the square steel connectors 51 are connected and fixed to the embedded plates of the ceiling of the building passage 1 outside the fusion reactor main unit through bolts. During specific production, the structure of the inclined tie rod 44 of the inclined hanging rail component 4 is as follows Fig.13As shown, it mainly includes an inclined rod 44 and two supports. The inclined rod 44 is connected to the hinge support by bolts. The upper hinge support is welded to the neck tube of the upper window of the vacuum chamber, and the bottom of the lower hinge support is welded to the load-bearing steel beam 45. The structure of the load-bearing steel beam 45 of the inclined suspension rail component 4 is as shown in FIG. Fig.14 As shown, it includes an I-beam 50 and a connecting wing plate 49, which are provided with multiple bolt holes for connecting with the annular hanging rail 46. The two ends of the load-bearing steel beam 45 have a certain bevel angle for mutual docking and finally welded into an octagonal structure.

[0043] For the structure of the annular hanging rail 46 of the inclined hanging rail component 4, please refer to Fig.15 As shown, it includes 2 semi-circular hanging rails 53 and 6 groups of square steel connectors 51, each semi-circular hanging rail 53 includes straight rails at both ends and an arc rail in the middle section, and the inner and outer edges of the arc rail are provided with a plurality of connecting plates 52 of different structural forms, which are connected to the upper load-bearing steel beam 45 by bolts; the square steel connector 51 is connected and fixed to the embedded plate on the ceiling of the building passage 1 outside the fusion reactor main unit by bolts, providing tension and fixation for the straight rail; the straight rail is installed in the building passage 1 through the square steel connector 51, and the transition section connected to the arc rail is located at the window 8 in the vacuum chamber of the fusion reactor, and the circular rail is located in the vacuum chamber. In addition, in the inclined hanging rail component 4, since the circular hanging rail 46 is composed of two semi-circular hanging rails 53 symmetrically built, the straight rails at both ends of each semi-circular hanging rail 53 pass through different windows 8 in the vacuum chamber, so the circular hanging rail 46 structure can simultaneously transport the internal components of the two half areas of the vacuum chamber without affecting each other. That is, during construction, the two internal components start from one end of the two semi-circular hanging rails 53 and move towards each other to transport the internal components until they are in their respective half areas in the vacuum chamber. After the hanging operation, the empty hoist leaves the vacuum chamber and continues to move into the building passage 1.

[0044] The method of using the transport platform is as follows: it mainly includes two stages. Stage 1: after the vacuum chamber is welded into a ring, a vacuum chamber transport component 2 is built in a building channel 1 outside the vacuum chamber. The construction process is as follows: Fig.11 As shown, after the construction is completed, the internal components are installed until the internal components above the equatorial plane of the vacuum chamber are installed. Phase 2: After completing Phase 1, the transport track assembly 9, the transport trolley assembly 10, and the mobile crane assembly 6 in the vacuum chamber outer transport component 2 are removed, and the inclined suspension rail assembly 4 is erected using the supporting steel frame assembly 7, and the internal components below the equatorial plane of the vacuum chamber are transported. The specific usage method is as follows Fig.16 until the internal parts of the vacuum chamber are installed.

[0045] When in use, the inclined suspension rail component 4 is specifically constructed as follows: Fig.16As shown, the two semi-annular hanging rails 53 in the annular hanging rail 46 are named the first hanging rail 54 and the second hanging rail 55, and the two ends of each hanging rail are respectively named A end and B end, that is, one end is A end and the other end is B end. During construction, an internal component to be transported starts from the A end of the first hanging rail 54, passes through the window 8 in the vacuum chamber along a straight track and enters the vacuum chamber, and when it reaches above the corresponding position, the internal component is lowered and unloaded, and the empty load sling is retracted and continues to move to the B end of the first hanging rail 54, or returns to the A end of the first hanging rail 54 depending on the construction status of the second hanging rail 55, and then carries out the next transportation; at the same time, another internal component starts from the B end of the second hanging rail 55, passes through the window 8 in the vacuum chamber along a straight track and enters the other half area in the vacuum chamber, and the internal component is lowered and unloaded, and the empty load sling is retracted and continues to move to the A end of the second hanging rail 55, or returns to the B end of the second hanging rail 55 depending on the construction status of the first hanging rail 54, and then carries out the next transportation. During the whole process, the transportation and construction of the first hanging rail 54 and the second hanging rail 55 are coordinated and coordinated. Under the restriction that the window 8 in the vacuum chamber can only pass through one internal component at a time, it is ensured that the tooling hangers on the two semi-annular hanging rails 53 do not interfere with each other during movement.

[0046] The present invention is not limited to the field involved in this implementation case, and some well-known structures or principles are not further described. However, ordinary technicians in the relevant field can theoretically know all the well-known technologies in this technical field before the application date or priority date, can fully master all the existing technologies in this technical field, and have the means and ability to apply these existing technologies for actual design and application. Under the technical enlightenment given by this application, technicians can improve and implement the present invention more comprehensively in combination with their own abilities. In addition, it should be pointed out that although the text and graphics of the above embodiments have shown the specific implementation occasions of the present invention, for ordinary technicians in this field, it is entirely possible to carry out a variety of obvious expansions and extensions on these embodiments without departing from the design concept of the present invention to form different embodiments, but this does not affect the scope of protection of the present invention, which is covered and embodied by the technical features of the claims and equivalent technical features.

Claims

1. A transport platform for compact fusion reactor internal components, characterized in that: It comprises a vacuum chamber outer transport component (2) and an inclined suspension rail component (4) respectively used for transporting internal components on both sides of the upper and lower equatorial plane of the vacuum chamber, wherein: The vacuum chamber external transport component (2) comprises a supporting steel frame assembly (7), a transport track assembly (9), a transport trolley assembly (10), and a mobile crane assembly (6); the supporting steel frame assembly (7) comprises a cage-shaped steel frame (11); one end of the cage-shaped steel frame (11) is located in the building passage (1), and the other end extends out of the building passage (1) to the window (8) in the vacuum chamber; one section of the transport track assembly (9) is installed flatly in the building passage (1), and the remaining section is located flatly in the cage-shaped steel frame (11) and extends to the window (8) in the vacuum chamber; the mobile crane assembly (6) and the transport trolley are located on the transport track assembly (9) in sequence, and can move linearly along the transport track assembly (9); The inclined suspension rail component (4) comprises an inclined rod (44), a load-bearing steel beam (45), and an annular suspension rail (46). The inclined rod (44) is installed in an annular array at the upper end of a frame in the shape of a regular polygon. The frame is formed by connecting a plurality of load-bearing steel beams (45) end to end in sequence. One end of each inclined rod (44) is connected to the collar of the upper window of the vacuum chamber, and the other end is connected to the load-bearing steel beam (45).

2. The transport platform for compact fusion reactor internal components according to claim 1, characterized in that: Horizontal guide rails (17) are provided on the channel steels (16) on both sides of the transport track of the transport track assembly (9). The horizontal guide rails (17) are used for moving and guiding the mobile crane assembly (6). The transport track is provided with long linear guide rails (15) for moving the transport trolley component.

3. The transport platform for compact fusion reactor internal components according to claim 2, characterized in that: The transport trolley component comprises an XY displacement adjustment component and a transport chassis (28) which are arranged vertically and connected by bolts. The transport chassis (28) can reciprocate and position brake on the long linear guide rail (15). The XY displacement adjustment component comprises an upper plate (22) and a lower plate (21) which are arranged vertically and parallelly. A pair of linear guide rails are arranged between the two plates. The lower plate (21) is located above a bottom plate (20) fixed on the transport chassis (28). The lower plate (21) and the bottom plate (20) are also slidably connected by a pair of linear guide rails. The two pairs of linear guide rails are perpendicular to each other. A screw mechanism is also arranged between each pair of linear guide rails. The screw mechanism is used to drive the plate to move linearly along the linear guide rail.

4. The transport platform for compact fusion reactor internal components according to claim 2, characterized in that: A first worm wheel (29) and a second worm wheel (31) which do not contact each other are coaxially fixed on a first lead screw (23) located at the upper part through an elastic pin (33); a first worm (37) and a second worm (38) which do not contact each other are coaxially fixed on a second lead screw (27) located at the lower part, and the rotation directions of the two worm wheels and the two worms are opposite to each other; and a third worm (35) which is located below the first lead screw (23) and is parallel to the second lead screw (27); one section of the third worm (35) is meshed with the second worm wheel (31), and the other section of the third worm (35) is driven by the second worm (38) through a driving worm wheel (36); and the first worm (37) is driven and meshed with the first worm wheel (29).

5. The transport platform for compact fusion reactor internal components according to claim 4, characterized in that: Both ends of the first worm gear (29) and the second worm gear (31) are in sliding contact with corresponding positioning rings (30) coaxially fixed on the first lead screw (23); the inner walls of the first worm gear (29) and the second worm gear (31) are provided with a blind hole (32); the surface of the first lead screw (23) is connected to the elastic pin (33) along its radial direction through a push spring (34); and under normal conditions, the push spring (34) completely restricts the elastic pin (33) in the first lead screw (23); a driving element is respectively provided in the first worm gear (29) and the second worm gear (31); the driving element can drive one end of the elastic pin (33) to be inserted into the blind hole (32), so that the first worm gear (29) and the second worm gear (31) are fixedly installed with the first lead screw (23).

6. The transport platform for compact fusion reactor internal components according to claim 5, characterized in that: The driving element is a hydraulic rod, an electric push rod, or an electromagnet. When the driving element is a hydraulic rod or an electric push rod, the free end of the hydraulic rod or the electric push rod can extend into the push spring (34) to push the elastic pin (33) into the blind hole (32). When the driving element is an electromagnet, a magnet is also fixed in the elastic pin (33). When the electromagnet is energized, it can repel the magnet, thereby pushing the elastic pin (33) into the blind hole (32).

7. The transport platform for compact fusion reactor internal components according to claim 2, characterized in that: The mobile crane assembly (6) comprises a load-bearing chassis (39), rollers (43), a rotary drive motor (40), and a crane (41). The load-bearing chassis (39) is used to support the crane (41). Two opposite sides of the load-bearing chassis (39) are symmetrically provided with a plurality of pairs of rollers (43). The upper and lower rollers (43) in each pair of rollers (43) can be clamped on the horizontal guide rail (17), so that the crane (41) moves along the horizontal guide rail (17) and remains stable. The rotary drive motor (40) drives a gear plate (42) at the bottom of the crane (41) through gears, so that the crane (41) rotates.

8. The transport platform for compact fusion reactor internal components according to claim 1, characterized in that: The load-bearing steel beam (45) structure includes an I-beam (50) and a connecting wing plate (49), and the connecting wing plate (49) is provided with a plurality of bolt holes for connecting with the annular hanging rail (46); the annular hanging rail (46) includes two semi-annular hanging rails (46) and a square steel connecting piece (51), each semi-annular hanging rail (46) includes straight rails at both ends and an arc rail in the middle, and the straight rails pass through windows (8) in different vacuum chambers, and the inner and outer edges of the arc rails are provided with a plurality of connecting plates (52) for connecting with the load-bearing steel beam (45) above by bolts; the square steel connecting piece (51) is connected and fixed to the embedded plate of the ceiling of the building passage (1) outside the fusion reactor main unit by bolts.

9. A method for using a transport platform for compact fusion reactor internal components, characterized in that: Follow the steps below, S1. After the vacuum chamber (3) is welded into a ring, the vacuum chamber outer transport component (2) is built in the building passage (1) outside the vacuum chamber. After the construction is completed, the installation of the internal components begins. The internal components to be installed are placed on the transport trolley component (10) using the mobile crane component (6). The transport trolley component (10) then moves along the transport track component (9) in the support steel frame component (7) toward the window (8) in the vacuum chamber. In this way, the internal components above the equatorial plane of the vacuum chamber are transported to the designated positions one by one until the internal components above the equatorial plane of the vacuum chamber are installed. S2. Remove the transport track assembly (9), the transport trolley assembly (10), and the mobile crane assembly (6) from the vacuum chamber outer transport assembly (2), use the supporting steel frame assembly (7) to erect the inclined suspension rail assembly (4), and start transporting the internal components below the equatorial plane of the vacuum chamber until the internal components of the vacuum chamber are installed.

10. The method for using the transport platform for compact fusion reactor internal components according to claim 9, characterized in that: The annular hanging rail (46) comprises a first hanging rail (54) and a second hanging rail (55) which are bent in a semicircular shape in the middle and straight at both ends. During construction, an internal component is started from one end of the first hanging rail (54), passed through the window (8) in the vacuum chamber along the straight track and entered the vacuum chamber (3). When it reaches the top of the corresponding position, the internal component is lowered and unloaded. After the unloaded hanging device is retracted, it continues to move to the other end of the first hanging rail (54), or returns to one end of the first hanging rail (54) for the next transportation. At the same time, another internal component starts from the other end of the second hanging rail (55), passes through the window (8) in the vacuum chamber along the straight track and enters the other half area in the vacuum chamber. The internal component is lowered and unloaded. After the empty sling is retracted, it continues to move to one end of the second hanging rail (55), or returns to the other end of the second hanging rail (55) for the next transportation.

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