Connection structure and nuclear fusion device

Abstract

The invention discloses a connecting structure and a nuclear fusion device, and belongs to the technical field of fastening connection. The connecting structure comprises a pin shaft, the pin shaft comprises a convex shoulder and a rod part which are connected, and the rod part is used for penetrating through mounting holes of a plurality of connecting objects and is provided with a first convex part and a second convex part which are suitable for being separated from the convex shoulder; the limiting component is locked with the pin shaft so as to fasten and mount a plurality of connected objects, is provided with a first matching part and a second matching part, and forms a through hole; the elastic piece is sleeved outside the rod part; the first protruding part and the second protruding part are configured to penetrate through the through hole in the direction away from the protruding shoulder and then rotate by a set angle in the axial direction so that the first protruding part and the first matching part can be oppositely arranged in the axial direction, the second protruding part and the second matching part can be oppositely arranged in the axial direction, and the elastic piece is configured to drive the rod part to move towards the protruding shoulder. The first convex part and the first matching part are in limiting fit in the axial direction of the pin shaft, and the second convex part and the second matching part are in limiting fit in the circumferential direction of the pin shaft. By using the structure, quick assembly and quick disassembly of a connected object are realized.

Description

Technical Field

[0001] The present application belongs to the field of fastening connection technology, and in particular relates to a connection structure and a nuclear fusion device. Background Art

[0002] In nuclear fusion projects, a large number of connection structures are required to install and fix pipes and lines. Common connection forms include welding and threaded connections. However, welded connections cannot be easily disassembled, which is not conducive to subsequent maintenance. Threaded connections have relatively low installation efficiency and a short subsequent maintenance life. In addition, neither welded connections nor threaded connections have shockproof functions, resulting in a high risk of loosening and falling off of pipelines and lines after long-term use. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a connection structure and a nuclear fusion device that enable rapid installation and removal of connected objects, increase the sustainability and maintainability of the connection structure, and reduce the risk of loosening and falling off of pipeline lines.

[0004] In a first aspect, the present application provides a connection structure for connecting a plurality of connection objects having mounting holes, comprising: A pin shaft, comprising a boss and a rod portion connected to each other, wherein the rod portion is used to pass through the mounting holes of the plurality of connection objects and is provided with a first convex portion and a second convex portion adapted to be spaced apart from the boss; a limiting member, locked with the pin shaft to fasten and install the plurality of connection objects, provided with a first matching portion and a second matching portion, and forming a through hole; An elastic member is sleeved on the outside of the rod; wherein, the first protrusion and the second protrusion are configured to pass through the through hole in a direction away from the boss and then rotate axially at a set angle so that the first protrusion and the first matching portion are axially arranged relative to each other, and the second protrusion and the second matching portion are axially arranged relative to each other, and the elastic member is configured to drive the rod toward the boss so that the first protrusion and the first matching portion are axially limited and matched with each other along the pin shaft, and the second protrusion and the second matching portion are circumferentially limited and matched with each other along the pin shaft.

[0005] According to the connection structure of the present application, through the coordinated design of the above-mentioned pin, limiting member and elastic member, combined with the collaborative locking design of axial limit and circumferential limit, rapid installation and disassembly of the connection object is achieved. On the one hand, compared with welding, the sustainability and maintainability of the connection structure are increased. During the maintenance of the nuclear fusion device, the faulty pipeline or line can be quickly disassembled for repair or replacement, thereby greatly shortening the maintenance time; on the other hand, compared with threaded connection, the tedious process of multiple rotations and tightening is eliminated, thereby greatly improving the installation efficiency. In large-scale pipeline installation projects, the construction period can be significantly shortened, and at the same time, problems such as thread wear and stripping under long-term use are avoided, thereby reducing the maintenance frequency and extending the service life of the connection structure; on the other hand, the elastic member can absorb part of the energy during vibration, reducing the impact of vibration on the connection interface, thereby significantly reducing the risk of loosening and falling off of the pipeline line; on the other hand, the structure is simple, the components are standardized, the manufacturing cost is low, and it can adapt to a variety of connection objects of different sizes and different scenarios, thereby increasing the usability and compatibility of the connection structure, which is conducive to large-scale promotion and use.

[0006] According to one embodiment of the present application, the second protrusion is connected to one end of the first protrusion close to the boss, and the second protrusion does not protrude outward from the first protrusion, the first matching portion includes a first limiting surface formed by the end surface of the limiting member facing away from the boss, the first protrusion abuts against the first limiting surface, the second matching portion includes a groove opened in the hole wall of the through hole, the first limiting surface is adjacent to the groove, and the second protrusion is locked with the groove.

[0007] According to one embodiment of the present application, the outer contour of the through hole is contoured to the outer contour of the first convex portion, and the outer side wall of the first convex portion includes a first plane, a first arc surface, a second plane and a second arc surface connected end to end, the centers of curvature of the first arc surface and the second arc surface are both located within the first convex portion, and the second convex portion is distributed on the end face of the first convex portion close to the edge of the first arc surface and / or the second arc surface.

[0008] According to one embodiment of the present application, the second protrusion is provided with a guiding inclined surface for cooperating with the groove.

[0009] According to one embodiment of the present application, the pin shaft, the first protrusion and the second protrusion are an integrated structure.

[0010] According to an embodiment of the present application, the plurality of connection objects are divided into a first part and a second part; wherein, A first clamping space is formed between the boss and the elastic member, and the first clamping space is used to accommodate the stacked first part and the second part.

[0011] According to an embodiment of the present application, the plurality of connection objects are divided into a first part and a second part; wherein, A second clamping space is formed between the elastic member and the limiting component, and the second clamping space is used to accommodate the stacked first part and the second part.

[0012] According to an embodiment of the present application, the plurality of connection objects are divided into a first part and a second part; wherein, A third clamping space is formed between the boss and the elastic member, and the third clamping space is used to accommodate the first part. A fourth clamping space is formed between the elastic member and the limiting member, and the fourth clamping space is used to accommodate the second part.

[0013] According to an embodiment of the present application, the plurality of connection objects are divided into a first part and a second part; wherein, A fifth clamping space is formed between the boss and the elastic member, and the fifth clamping space is used to accommodate the first part. The end of the limiting member facing away from the elastic member is used to fix the second part.

[0014] According to an embodiment of the present application, the plurality of connection objects are divided into a first part and a second part; wherein, A sixth clamping space is formed between the elastic member and the limiting member, and the sixth clamping space is used to accommodate the first part. An end of the limiting member facing away from the elastic member is used to fix the second part.

[0015] In a second aspect, the present application provides a nuclear fusion device, comprising: The connection structure as described in any of the above solutions; A bracket and a support arm, wherein the plurality of connection objects include the bracket and the support arm, and the bracket and the support arm are connected via the connection structure to form a channel; Cables are laid in the channel.

[0016] According to the nuclear fusion device of the present application, the rapid installation and disassembly of the connection objects are achieved through the setting of the above-mentioned connection structure. On the one hand, compared with welding, the sustainability and maintainability of the connection structure are increased. During the maintenance of the nuclear fusion device, the faulty pipeline or line can be quickly disassembled for repair or replacement, thereby greatly shortening the maintenance time; on the other hand, compared with threaded connection, the tedious process of multiple rotations and tightening is eliminated, thereby greatly improving the installation efficiency. In large-scale pipeline installation projects, the construction period can be significantly shortened, and at the same time, problems such as thread wear and stripping under long-term use are avoided, thereby reducing the frequency of maintenance and extending the service life of the connection structure; on the other hand, the elastic part can absorb part of the energy during vibration, reducing the impact of vibration on the connection interface, thereby significantly reducing the risk of loosening and falling off of the pipeline line; on the other hand, the structure is simple, the components are standardized, the manufacturing cost is low, and it can adapt to a variety of connection objects of different sizes and different scenarios, thereby increasing the usability and compatibility of the connection structure, which is conducive to large-scale promotion and use.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 This is one of the schematic diagrams of the assembly process of the connection structure provided in the embodiment of the present application; Figure 2 This is the second schematic diagram of the assembly process of the connection structure provided in the embodiment of the present application; Figure 3 This is the third schematic diagram of the assembly process of the connection structure provided in the embodiment of the present application; Figure 4 This is the fourth schematic diagram of the assembly process of the connection structure provided in the embodiment of the present application; Figure 5 This is a schematic exploded view of the connection structure provided in an embodiment of the present application; Figure 6 is a cross-sectional view of a connection structure provided in an embodiment of the present application; Figure 7 This is one of the structural diagrams of the connection structure and multiple connection objects provided in the embodiments of the present application; Figure 8 This is the second structural diagram of the connection structure and multiple connection objects provided in the embodiment of the present application; Figure 9 This is the third structural diagram of the connection structure and multiple connection objects provided in the embodiment of the present application; Figure 10This is the fourth structural diagram of the connection structure and multiple connection objects provided in the embodiment of the present application; Figure 11 This is the fifth structural diagram of the connection structure and multiple connection objects provided in the embodiment of the present application.

[0019] Reference numerals: Connecting structure 10; Pin 11, shoulder 111, rod 112; The limiting member 12, the through hole 121, the first matching portion 122, and the second matching portion 123; Elastic member 13, first convex portion 14, first flat surface 141, first arc surface 142, second flat surface 143, second arc surface 144, second convex portion 15, guiding inclined surface 151; A first clamping space 101, a second clamping space 102, a third clamping space 103, a fourth clamping space 104, a fifth clamping space 105, and a sixth clamping space 106; First part 20a, second part 20b. DETAILED DESCRIPTION

[0020] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0021] The present application discloses a connection structure 10 for connecting a plurality of connection objects having mounting holes.

[0022] Reference below Figures 1-11 A connection structure 10 according to an embodiment of the present application is described.

[0023] In some embodiments, as Figure 1-Figure 5 As shown, the connection structure 10 includes: a pin shaft 11, a limiting member 12 and an elastic member 13.

[0024] The pin shaft 11 includes a connected boss 111 and a rod 112. The rod 112 is used to pass through the mounting holes of multiple connection objects, and the rod 112 is provided with a first protrusion 14 and a second protrusion 15 suitable for being spaced apart from the boss 111; the limiting member 12 is locked with the pin shaft 11 to fasten and install multiple connection objects, and the limiting member 12 is provided with a first matching portion 122 and a second matching portion 123, and the limiting member 12 forms a through hole 121; the elastic member 13 is sleeved on the outside of the rod 112; wherein, the first protrusion 14 and the second protrusion 15 is configured to pass through the through hole 121 in a direction away from the boss 111 and then rotate axially at a set angle so that the first protrusion 14 and the first matching portion 122 are axially arranged relative to each other, and the second protrusion 15 and the second matching portion 123 are axially arranged relative to each other, and the elastic member 13 is configured to drive the rod portion 112 to move toward the boss 111 so that the first protrusion 14 and the first matching portion 122 are axially limited and matched along the pin shaft 11, and the second protrusion 15 and the second matching portion 123 are circumferentially limited and matched along the pin shaft 11.

[0025] The boss 111 may be disc-shaped, square-shaped, or in other shapes, and is used to directly abut against the elastic member 13 or abut against a connection object, which is not limited in this embodiment of the present application.

[0026] like Figure 1-Figure 5 As shown, the rod portion 112 may be a cylindrical rod, and the diameter of the rod portion 112 is adapted to the mounting holes of two or more connection objects to ensure smooth penetration.

[0027] The through hole 121, the first matching portion 122, and the second matching portion 123 of the limiting member 12 can be molded or machined into a specific shape. The size of the through hole 121 allows the first protrusion 14 and the second protrusion 15 to pass through smoothly, while leaving a certain margin for the rod 112 to flexibly rotate and move freely in the axial direction.

[0028] The first protrusion 14 may be a projection, an ear, or a key, and the first matching portion 122 may be a groove, a limiting plane, or a keyway, etc., which is not limited in this embodiment of the present application.

[0029] The second protrusion 15 can be a projection, a gear, or a key, etc., and the second matching portion 123 can be a groove, a gear, or a keyway, etc., and the embodiment of the present application does not limit this.

[0030] The elastic member 13 may include but is not limited to a spring, an elastic sleeve, an elastic bar or a spring sheet, etc., and the embodiment of the present application does not limit this.

[0031] The elastic member 13 with a suitable elastic coefficient and size is selected according to the fastening force required by the multiple connection objects.

[0032] In actual implementation, Figures 1-4As shown, during the assembly process of the connection structure 10: the rod portion 112 of the pin shaft 11 is sequentially passed through the mounting holes of multiple connection objects. The multiple connection objects can have at least two connection objects stacked and distributed at the same position on the pin shaft 11, or at least two connection objects can be spaced and distributed at different positions on the pin shaft 11. This is not limited in the embodiment of the present application. The first protrusion 14 and the second protrusion 15 are passed through the through hole 121 of the limiting member 12 along the axial direction of the pin shaft 11, so that the rod portion 112 of the pin shaft 11 is inserted into the through hole 121, and the boss 111 of the pin shaft 11 is located on one side of the limiting member 12, and the first boss 14 and the second protrusion 15 are located on the opposite side of the limiting member 12. During the entire axial movement process, the boss 111 continuously approaches the limiting member 12, and the elastic member 13 sleeved outside the rod portion 112 is continuously compressed, that is, the operator needs to overcome the continuously increasing elastic force of the spring. The pin 11 can be rotated axially to a set angle, or if the limiting member 12 is not fixed, the pin 11 can also be rotated axially to a set angle. In other words, the pin 11 and the limiting member 12 can be rotated relative to each other by a set angle. After the set angle is rotated, the first protrusion 14 and the first matching portion 122 are aligned axially, and the second protrusion 15 and the second matching portion 123 are aligned axially. Angle scales can be marked on the pin 11 and the limiting member 12 in advance to facilitate operation. The operator can stop applying external force to the elastic member 13. In this way, the elastic force of the elastic member 13, which has lost its resistance, drives the rod 112 back along its original path, that is, toward the boss 111, until the first protrusion 14 moves to the axial limit engagement with the first mating portion 122. The axial limit resists the pull-off force, ensuring that multiple connection objects are clamped axially and will not separate. At the same time, the second protrusion 15 moves to the circumferential limit engagement with the second mating portion 123. The circumferential limit resists torque, preventing the pin 11 from rotating during use, maintaining a stable connection, and reducing wear points. At this time, the elastic member 13 is still in a compressed state, continuously providing a tightening force, and during use, the elastic member 13 can compensate for thermal expansion, vibration, or wear, maintain constant pressure, and prevent shock. The entire assembly process only requires insertion, rotation, and release, without the need for complex tools.

[0033] During the disassembly process of the connecting structure 10: the operator can push the pin shaft 11 in the direction of the first protrusion 14 / second protrusion 15, so that the first protrusion 14 is separated from the first matching portion 122, and the second protrusion 15 is separated from the second matching portion 123, and then the pin shaft 11 is rotated axially to a set angle, or when the limiting member 12 is not fixed, the pin shaft 11 can also be rotated axially to a set angle. In other words, the pin shaft 11 and the limiting member 12 can be rotated relative to each other by a set angle. The rotation direction during the disassembly process is opposite to that during the installation process. After rotating the set angle, the first protrusion 14 and the first matching portion 122 are axially misaligned, and the second protrusion 15 and the second matching portion 123 are axially misaligned. At this time, the axial projection of the through hole 121 covers the axial projection of the first protrusion 14 and the second protrusion 15. The operator can stop applying external force to the elastic member 13. In this way, the elastic force of the elastic member 13, which has lost the counterforce, drives the rod 112 to withdraw from the through hole 121 of the limiting member 12, that is, to move toward the direction of the boss 111. During this period, the operator can also always hold the pin shaft 11 to control the stability of its movement direction until the pin shaft 11, the first protrusion 14 and the second protrusion 15 are completely withdrawn from the through hole 121 of the limiting member 12.

[0034] The connection structure 10 provided in the embodiment of the present application achieves rapid installation and removal of the connection objects through the coordinated design of the pin 11, the limiting member 12, and the elastic member 13, combined with the coordinated locking design of the axial limit and the circumferential limit. On the one hand, compared with welding, the sustainability and maintainability of the connection structure 10 are increased. During the maintenance of the nuclear fusion device, the faulty pipeline or line can be quickly disassembled for repair or replacement, thereby greatly shortening the maintenance time. On the other hand, compared with threaded connections, the tedious process of multiple rotations and tightening is eliminated, thereby greatly improving the installation efficiency. In large-scale pipeline installation projects, the construction period can be significantly shortened, and the problems of thread wear and stripping caused by long-term use are avoided, thereby reducing the frequency of maintenance and extending the service life of the connection structure 10. On the other hand, the elastic member 13 can absorb part of the energy during vibration, reducing the impact of vibration on the connection interface, thereby significantly reducing the risk of loosening and falling off of the pipeline line. On the other hand, the structure is simple, the components are standardized, the manufacturing cost is low, and it can adapt to a variety of connection objects of different sizes and scenarios, thereby increasing the usability and compatibility of the connection structure 10, which is conducive to large-scale promotion and use.

[0035] The set angle may be 30°, 45°, 60°, 90° or 120°, etc., and this embodiment of the present application does not limit this.

[0036] For example, Figure 1-Figure 5 As shown, the setting angle is 90°.

[0037] In some embodiments, as Figure 1-Figure 5 As shown, the second protrusion 15 is connected to one end of the first protrusion 14 close to the boss 111, and the second protrusion 15 does not protrude outward from the first protrusion 14. The first matching portion 122 includes a first limiting surface formed by the end surface of the limiting member 12 facing away from the boss 111. The first protrusion 14 abuts against the first limiting surface. The second matching portion 123 includes a groove opened in the hole wall of the through hole 121. The first limiting surface is adjacent to the groove, and the second protrusion 15 is locked with the groove.

[0038] In fact, the second protrusion 15 is located near the end of the first protrusion 14, that is, close to the side of the boss 111. The outer contour of the second protrusion 15 does not exceed the outer contour of the first protrusion 14, avoiding interference with the through hole 121 of the limiting member 12 during installation. In this case, the axial projection of the through hole 121 only needs to cover the axial projection of the first protrusion 14. The through hole 121 does not need to be processed in a complex manner, which reduces the processing difficulty. The end face of the limiting member 12 away from the boss 111 directly serves as the reference surface for axial limitation. When the elastic member 13 drives the pin 11 to retract, the first protrusion 14 abuts against the first limiting surface on the end face, preventing the pin 11 from further axial movement. The design of the limiting surface directly formed by the end face of the limiting member 12 does not require additional processing, and can provide a larger contact area, thereby enhancing the stability of the axial limitation. The groove opened on the inner wall of the through hole 121 is connected with the position of the first limiting surface, that is, the first limiting surface is distributed on the outer peripheral edge of the notch of the groove. When the pin shaft 11 rotates the set angle, the second protrusion 15 just falls into the groove, realizing circumferential locking, preventing the pin shaft 11 from rotating relative to the limiting member 12. When the second protrusion 15 is snapped into place, the first protrusion 14 also presses against the first limiting surface at the same time. In other words, the circumferential limiting fit can be regarded as the positioning reference of the axial limiting fit, and there is no need to perform positioning twice, which reduces the difficulty of assembly and further improves the assembly efficiency.

[0039] In addition, the first matching portion 122 is formed by the end face of the limiting member 12, and the second matching portion 123 is directly opened on the wall of the through hole 121. These structures are relatively simple. Compared with some complex matching structures, the requirements for processing technology and equipment during the processing and manufacturing process are lower, and no special processing methods and high-precision processing equipment are required, thereby reducing production and processing costs.

[0040] It should be noted that in other embodiments, the second protrusion 15 may also protrude outward and be connected to the side wall of the first protrusion 14. In this case, the through hole 121 on the limiting member 12 needs to be designed to have a shape that matches the outer contour of the combination of the first protrusion 14 and the second protrusion 15.

[0041] In some embodiments, as Figure 1 、 Figure 2 and Figure 5As shown, the outer contour of the through hole 121 is configured to imitate the outer contour of the first convex portion 14, and the outer side wall of the first convex portion 14 includes a first plane 141, a first arc surface 142, a second plane 143 and a second arc surface 144 connected in sequence end to end, the centers of curvature of the first arc surface 142 and the second arc surface 144 are both located within the first convex portion 14, and the second convex portion 15 is distributed on the end face of the first convex portion 14 close to the edge of the first arc surface 142 and / or the second arc surface 144.

[0042] In this embodiment, the shape and size of the through hole 121 are consistent with the cross-sectional shape and size of the first protrusion 14, and are non-circular. Specifically, the outer wall of the first protrusion 14 is composed of four continuous boundaries, namely the first plane 141, the first curved surface 142, the second plane 143 and the second curved surface 144. Since the centers of curvature of the first curved surface 142 and the second curved surface 144 are both inside the protrusion, the first curved surface 142 and the second curved surface 144 are both outward convex surfaces, rather than inward convex surfaces. In this way, the outer wall of the first protrusion 14 can be approximately elliptical, waist-shaped or oval, for example, Figure 1 、 Figure 2 and Figure 5 As shown, the cross-sectional shape of the first protrusion 14 is approximately waist-shaped. During processing, a portion of each of the two opposite sides of the cylindrical structure can be directly cut off. The two cut surfaces formed after cutting are the first plane 141 and the second plane 143. The uncut areas left are the first arc surface 142 and the second arc surface 144. The curvatures of the first arc surface 142 and the second arc surface 144 are equal.

[0043] The second protrusion 15 is staggered with the first plane 141 and the second plane 143. One or more second protrusions 15 can be provided, and "more" means two or more. The multiple second protrusions 15 are respectively distributed on the end face of the first protrusion 14 near the edge of the first arc surface 142 and / or the second arc surface 144.

[0044] For example, Figure 5 and Figure 6 As shown, two second protrusions 15 can be symmetrically arranged, and the outer side walls of the two second protrusions 15 smoothly transition with the first arc surface 142 and the second arc surface 144 respectively. In other words, no step structure is formed between the second protrusion 15 and the corresponding first arc surface 142 or second arc surface 144.

[0045] The shape of the second protrusion 15 may include but is not limited to a cube, a cylinder, a semi-cylinder or a prism, etc., and the embodiment of the present application does not limit this.

[0046] In other embodiments, the cross-sectional shape of the first protrusion 14 may also be designed to be polygonal.

[0047] The connection structure 10 provided in the embodiment of the present application, through the shape design of the above-mentioned first protrusion 14 and the through hole 121, combined with the layout arrangement of the second protrusion 15, enables the pin shaft 11 to be inserted into the through hole 121 at only a unique angle. If the angle is not aligned, it cannot pass through, thereby achieving anti-misassembly and unique positioning, and reducing the risk of locking failure caused by installation at the wrong angle. At the same time, the first arc surface 142 and the second arc surface 144 are designed as outward convex arc surfaces, so that the first arc surface 142 and the second arc surface 144 form rolling contact with the wall of the through hole 121 during rotation, reducing friction resistance and alleviating local stress spikes, thereby further improving assembly efficiency and reducing the risk of jamming.

[0048] In some embodiments, as Figure 6 As shown, the second protrusion 15 is provided with a guiding inclined surface 151 for cooperating with the groove.

[0049] In this embodiment, if Figure 6 As shown, the guide slope 151 can be set at a position near the edge of the second protrusion 15 and form a certain angle with the end face and side face of the second protrusion 15 to achieve the best guiding effect. The guide slope 151 is set to be inclined outward from one end close to the elastic member 13 to the end away from the elastic member 13.

[0050] The connection structure 10 provided in the embodiment of the present application, through the setting of the above-mentioned guide bevel 151, automatically corrects the position deviation through the bevel sliding effect when the guide bevel 151 contacts the edge of the groove during rotation, and the axial driving force of the elastic member 13 assists the bevel to slide along the edge of the groove, allowing the second protrusion 15 to be locked smoothly even when there is a certain position deviation between the second protrusion 15 and the groove, reducing the jamming caused by hard collision, thereby greatly improving the assembly fault tolerance. Especially in the scenario where the operating field of view is limited, the addition of the guide bevel 151 just compensates for the centering difficulty caused by visual obstruction, further improving the assembly efficiency.

[0051] In some embodiments, as Figure 5 As shown, the pin 11, the first protrusion 14 and the second protrusion 15 are an integrated structure.

[0052] Specifically, the pin shaft 11 and the first protrusion 14 and the second protrusion 15 are integrally formed by the same material, without any separate connection methods such as welding and bolts. The pin shaft 11 and the first protrusion 14 and the second protrusion 15 can be integrally formed by forging, casting or CNC cutting processes, and the embodiments of the present application do not limit this.

[0053] It is understandable that, on the one hand, the integrated structure avoids the stress concentration problem caused by splicing components. In nuclear fusion projects, the connection structure 10 is subject to complex working conditions such as high temperature, vibration, and pressure. The connection of traditional spliced structures is prone to cracks, loosening, and other faults. However, the integrated structure can transmit loads more evenly when subjected to force, reducing the risk of structural damage, significantly improving the overall strength and reliability of the connection structure 10, ensuring the stability of the pipeline and line connections in the nuclear fusion device, and reducing safety hazards caused by failure of the connection structure 10. On the other hand, there is no need to process and assemble multiple independent components, which reduces the production process. Compared with separately processing the pin 11, the first protrusion 14, and the second protrusion 15 and then connecting them by welding or other means, the integrated manufacturing process shortens the production cycle and reduces the difficulty of production management. During assembly, there is no need to spend a lot of manpower to adjust the relative position and matching accuracy between the components. The integrated pin 11 can be directly inserted through the connection object and the limiting member 12, simplifying the assembly process, improving production and installation efficiency, and thus reducing production costs. On the other hand, the absence of splicing gaps makes the connection structure 10 more stable when facing changes in the external environment. In the vacuum environment of the nuclear fusion device, the integrated structure can better prevent gas leakage, improve the sealing of the device, and maintain the stability of the internal environment. At the same time, it also reduces the possibility of dust and impurities entering the interior of the connection structure 10 due to gaps, reduces the risk of component wear and failure caused by impurities, and extends the service life of the connection structure 10.

[0054] The following describes the embodiments of the present application in detail from two different implementation perspectives.

[0055] 1. In some embodiments, Figure 7 As shown, the plurality of connection objects are divided into a first part 20a and a second part 20b; wherein a first clamping space 101 is formed between the boss 111 and the elastic member 13, and the first clamping space 101 is used to accommodate the stacked first part 20a and the second part 20b.

[0056] In this embodiment, if Figure 7 As shown, the first part 20a and the second part 20b are stacked in the first clamping space 101, the first part 20a abuts the boss 111, the second part 20b abuts the end of the elastic member 13, and the rod 112 of the pin 11 passes through the mounting holes of the first part 20a and the second part 20b. The shape and size of the mounting hole can be designed to match the shape and size of the rod 112. Through the cooperation between the limiting member 12 and the pin 11, and the elastic force provided by the elastic member 13, the boss 111 and the limiting member 12 apply pressure to the stacked first part 20a and the second part 20b from both sides, thereby tightly clamping and fixing the first part 20a and the second part 20b in the first clamping space 101.

[0057] Using the first connection layout design mentioned above, the first clamping space 101 tightly fixes the stacked first part 20a and the second part 20b through the rigid support of the boss 111 and the dynamic pre-tightening force of the elastic part 13. The compression characteristics of the elastic part 13 can absorb vibration energy and reduce the displacement or delamination of the stacked parts caused by vibration. It is particularly suitable for connection scenarios where multiple panels are fastened together.

[0058] 2. In some embodiments, Figure 8 As shown, the plurality of connection objects are divided into a first part 20a and a second part 20b; wherein a second clamping space 102 is formed between the elastic member 13 and the limiting member 12, and the second clamping space 102 is used to accommodate the stacked first part 20a and the second part 20b.

[0059] In this embodiment, if Figure 8 As shown, the first part 20a and the second part 20b are stacked in the second clamping space 102, the first part 20a abuts against the end of the elastic member 13, and the second part 20b abuts against the limiting member 12. The rod portion 112 of the pin shaft 11 passes through the mounting holes of the first part 20a and the second part 20b. The shape and size of the mounting hole can be designed to match the shape and size of the rod portion 112. Through the cooperation between the limiting member 12 and the pin shaft 11, and the elastic force provided by the elastic member 13, the boss 111 and the limiting member 12 apply pressure to the stacked first part 20a and the second part 20b from both sides, thereby tightly clamping and fixing the first part 20a and the second part 20b in the second clamping space 102.

[0060] Using the above-mentioned second connection layout design, the second clamping space 102 tightly fixes the stacked first part 20a and the second part 20b through the rigid support of the limiting member 12 and the dynamic pre-tightening force of the elastic member 13. The compression characteristics of the elastic member 13 can absorb vibration energy and reduce the displacement or delamination of the stacked parts caused by vibration. It is particularly suitable for connection scenarios where multiple panels are fastened together.

[0061] 3. In some embodiments, Figure 9 As shown, multiple connection objects are divided into a first part 20a and a second part 20b; wherein, a third clamping space 103 is formed between the boss 111 and the elastic member 13, and the third clamping space 103 is used to accommodate the first part 20a, and a fourth clamping space 104 is formed between the elastic member 13 and the limiting member 12, and the fourth clamping space 104 is used to accommodate the second part 20b.

[0062] In this embodiment, if Figure 9As shown, both ends of the elastic member 13 are respectively spaced apart from the boss 111 and the limiting member 12 to form a third clamping space 103 and a fourth clamping space 104. The first part 20a and the second part 20b are installed separately. The rod 112 of the pin 11 passes through the mounting holes of the first part 20a and the second part 20b. The shape and size of the mounting hole can be designed to match the shape and size of the rod 112. The boss 111 and the elastic member 13 apply pressure to the first part 20a from both sides, thereby tightly clamping and fixing the first part 20a in the third clamping space 103. The limiting member 12 and the elastic member 13 apply pressure to the second part 20b from both sides, thereby tightly clamping and fixing the second part 20b in the fourth clamping space 104.

[0063] Using the above-mentioned third connection layout design, the third clamping space 103 tightly fixes the first part 20a through the rigid support of the boss 111 and the dynamic pre-tightening force of the elastic part 13, and the fourth clamping space 104 tightly fixes the second part 20b through the rigid support of the limiting member 12 and the dynamic pre-tightening force of the elastic part 13. It is particularly suitable for connection scenarios where there are large differences in thermal expansion coefficients and / or natural frequencies of multiple connection objects. The elastic part 13 serves as a thermal deformation absorption medium. When the expansion amount of the first part 20a and the second part 20b differs, the elastic part 13 compresses / releases the adjustment space volume. When the natural frequencies of the first part 20a and the second part 20b are different, the high-frequency vibration of the first part 20a is damped and isolated by the elastic part 13, and is less transmitted to the second part 20b to cause resonance.

[0064] 4. In some embodiments, Figure 10 As shown, multiple connection objects are divided into a first part 20a and a second part 20b; wherein, a fifth clamping space 105 is formed between the boss 111 and the elastic member 13, the fifth clamping space 105 is used to accommodate the first part 20a, and the end of the limiting member 12 away from the elastic member 13 is used to fix the second part 20b.

[0065] In this embodiment, if Figure 10 As shown, the first part 20a and the second part 20b are installed separately, and the rod portion 112 of the pin shaft 11 passes through the mounting hole of the first part 20a. The shape and size of the mounting hole of the first part 20a can be designed to match the shape and size of the rod portion 112. The first protrusion 14 passes through the mounting hole of the second part 20b. The mounting hole of the second part 20b only plays a avoidance role for the first protrusion 14 and the second protrusion 15 during assembly. The limiting member 12 can be pre-fixed to the second part 20b by clamping, welding, integral molding, etc. The boss 111 and the elastic member 13 apply pressure to the first part 20a from both sides, thereby tightly clamping the first part 20a and fixing it in the fifth clamping space 105.

[0066] Using the above-mentioned fourth connection layout design, the fifth clamping space 105 tightly fixes the first part 20a through the rigid support of the boss 111 and the dynamic pre-tightening force of the elastic part 13, and the limiting member 12 can be pre-installed to the second part 20b during the production and processing stage as a unified connection interface, reducing on-site assembly time and further improving assembly efficiency. Especially in nuclear fusion devices that require a large number of connection structures 10, the pre-installed interface can standardize the process and reduce errors.

[0067] 5. In some embodiments, Figure 11 As shown, multiple connection objects are divided into a first part 20a and a second part 20b; wherein, a sixth clamping space 106 is formed between the elastic member 13 and the limiting member 12, the sixth clamping space 106 is used to accommodate the first part 20a, and the end of the limiting member 12 away from the elastic member 13 is used to fix the second part 20b.

[0068] In this embodiment, if Figure 11 As shown, the first part 20a and the second part 20b are installed separately, and the rod portion 112 of the pin shaft 11 passes through the mounting hole of the first part 20a. The shape and size of the mounting hole of the first part 20a can be designed to match the shape and size of the rod portion 112. The first protrusion 14 passes through the mounting hole of the second part 20b. The mounting hole of the second part 20b only plays a avoidance role for the first protrusion 14 and the second protrusion 15 during assembly. The limiting member 12 can be pre-fixed to the second part 20b by clamping, welding, integral molding, etc. The limiting member 12 and the elastic member 13 apply pressure to the first part 20a from both sides, thereby tightly clamping and fixing the first part 20a in the sixth clamping space 106.

[0069] Using the fifth connection layout design mentioned above, the sixth clamping space 106 tightly fixes the first part 20a through the rigid support of the limiting member 12 and the dynamic pre-tightening force of the elastic member 13. The limiting member 12 can be pre-installed to the second part 20b during the production and processing stage as a unified connection interface, reducing on-site assembly time and further improving assembly efficiency. Especially in nuclear fusion devices that require a large number of connection structures 10, the pre-installed interface can standardize the process and reduce errors.

[0070] The application also discloses a nuclear fusion device.

[0071] In some embodiments, the nuclear fusion device includes: a bracket, a support arm, a cable, and a connecting structure 10 as described in any of the above solutions.

[0072] The multiple connection objects include brackets and supporting arms, which are connected through a connection structure 10 to form a channel; cables are laid in the channel.

[0073] It should be noted that in a nuclear fusion device, various cryopumps, molecular pumps, valves and other equipment all require related power cables, instrumentation cables and communication cables to ensure the normal operation of the equipment. All cables need to be laid along the relevant bridge, which is composed of the above-mentioned brackets, support arms and connecting structure 10. Therefore, during the laying of various cables, it is necessary to fix the cables in the channel of the bridge. Due to the limited space of the bridge and the large number of cables to be laid, the connecting structure 10 provided in the embodiment of the present application can quickly fix the cables without the need for other tools, and has less restriction on the operating space.

[0074] In other embodiments, the multiple connection objects may also include supports and clamps, and the nuclear fusion device may also include a pipeline. The supports and clamps may be connected through a connection structure 10 to clamp the pipeline.

[0075] The nuclear fusion device provided in the embodiment of the present application realizes the rapid installation and disassembly of the connection objects through the setting of the above-mentioned connection structure 10. On the one hand, compared with welding, the sustainability and maintainability of the connection structure 10 are increased. During the maintenance of the nuclear fusion device, the faulty pipeline or line can be quickly disassembled for repair or replacement, thereby greatly shortening the maintenance time; on the other hand, compared with threaded connection, the tedious process of multiple rotations and tightening is eliminated, thereby greatly improving the installation efficiency. In large-scale pipeline installation projects, the construction period can be significantly shortened, and at the same time, problems such as thread wear and stripping under long-term use are avoided, thereby reducing the maintenance frequency and extending the service life of the connection structure 10; on the other hand, the elastic member 13 can absorb part of the energy during vibration, reducing the impact of vibration on the connection interface, thereby significantly reducing the risk of loosening and falling off of the pipeline line; on the other hand, the structure is simple, the components are standardized, the manufacturing cost is low, and it can adapt to a variety of connection objects of different sizes and different scenarios, thereby increasing the usability and compatibility of the connection structure 10, which is conducive to large-scale promotion and use.

[0076] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0079] In the description of this application, “plurality” means two or more.

[0080] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0081] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0082] Other structures of ... according to the embodiments of the present application, such as ... and ..., and operations are known to ordinary technicians in this field and will not be described in detail here.

[0083] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A connection structure for connecting a plurality of connection objects having mounting holes, characterized in that: include: A pin shaft, comprising a boss and a rod portion connected to each other, wherein the rod portion is used to pass through the mounting holes of the plurality of connection objects and is provided with a first convex portion and a second convex portion adapted to be spaced apart from the boss; a limiting member, locked with the pin shaft to fasten and install the plurality of connection objects, provided with a first matching portion and a second matching portion, and forming a through hole; An elastic member is sleeved on the outside of the rod; wherein, the first protrusion and the second protrusion are configured to pass through the through hole in a direction away from the boss and then rotate axially at a set angle so that the first protrusion and the first matching portion are axially arranged relative to each other, and the second protrusion and the second matching portion are axially arranged relative to each other, and the elastic member is configured to drive the rod toward the boss so that the first protrusion and the first matching portion are axially limited and matched with each other along the pin shaft, and the second protrusion and the second matching portion are circumferentially limited and matched with each other along the pin shaft.

2. The connection structure according to claim 1, characterized in that: The second protrusion is connected to one end of the first protrusion close to the boss, and the second protrusion does not protrude outward from the first protrusion. The first matching portion includes a first limiting surface formed by the end surface of the limiting member facing away from the boss, the first protrusion abuts against the first limiting surface, and the second matching portion includes a groove opened in the hole wall of the through hole, the first limiting surface is adjacent to the groove, and the second protrusion is locked with the groove.

3. The connection structure according to claim 2, characterized in that: The outer contour of the through hole is contoured to the outer contour of the first convex portion, and the outer side wall of the first convex portion includes a first plane, a first arc surface, a second plane and a second arc surface connected end to end, the centers of curvature of the first arc surface and the second arc surface are both located within the first convex portion, and the second convex portion is distributed on the end face of the first convex portion close to the edge of the first arc surface and / or the second arc surface.

4. The connection structure according to claim 2, characterized in that: The second protrusion is provided with a guiding inclined surface for cooperating with the groove.

5. The connection structure according to claim 1, characterized in that: The pin shaft, the first convex portion and the second convex portion are integrated into one structure.

6. The connection structure according to any one of claims 1 to 5, characterized in that: The plurality of connection objects are divided into a first part and a second part; wherein, A first clamping space is formed between the boss and the elastic member, and the first clamping space is used to accommodate the stacked first part and the second part.

7. The connection structure according to any one of claims 1 to 5, characterized in that: The plurality of connection objects are divided into a first part and a second part; wherein, A second clamping space is formed between the elastic member and the limiting component, and the second clamping space is used to accommodate the stacked first part and the second part.

8. The connection structure according to any one of claims 1 to 5, characterized in that: The plurality of connection objects are divided into a first part and a second part; wherein, A third clamping space is formed between the boss and the elastic member, and the third clamping space is used to accommodate the first part. A fourth clamping space is formed between the elastic member and the limiting member, and the fourth clamping space is used to accommodate the second part.

9. The connection structure according to any one of claims 1 to 5, characterized in that: The plurality of connection objects are divided into a first part and a second part; wherein, A fifth clamping space is formed between the boss and the elastic member, the fifth clamping space is used to accommodate the first part, and the end of the limiting member away from the elastic member is used to fix the second part; or, A sixth clamping space is formed between the elastic member and the limiting member, and the sixth clamping space is used to accommodate the first part. An end of the limiting member facing away from the elastic member is used to fix the second part.

10. A nuclear fusion device, characterized in that: include: The connection structure according to any one of claims 1 to 9; A bracket and a support arm, wherein the plurality of connection objects include the bracket and the support arm, and the bracket and the support arm are connected via the connection structure to form a channel; Cables are laid in the channel.

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