Large space truss structure suitable for on-orbit assembly

Abstract

The invention relates to the field of large space truss structures, in particular to a large space truss structure suitable for on-orbit assembly, which comprises a plurality of horizontal truss rods, vertical truss rods and inclined truss rods, and horizontal connecting assemblies for connecting the horizontal truss rods are arranged between the adjacent horizontal truss rods; vertical connecting assemblies used for connecting the vertical truss rods are arranged between the adjacent vertical truss rods, and inclined connecting assemblies used for connecting inclined truss rods are arranged at the two ends of each inclined truss rod. The horizontal truss rods, the vertical truss rods and the inclined truss rods are spliced and combined into trusses of different structures at any angle through the horizontal connecting assemblies, the vertical connecting assemblies and the inclined connecting assemblies. The truss connecting rod is perfect in structure, through the design of various connecting assemblies, quick connection and disassembly of different truss connecting rods are achieved, trusses of different structures can be assembled conveniently, and meanwhile later maintenance of the trusses and on-orbit assembling and in-situ manufacturing of truss structures are facilitated.

Description

Technical Field

[0001] The invention relates to the field of large-scale space truss structures, and in particular to a large-scale space truss structure suitable for on-track assembly. Background Art

[0002] As space exploration missions become more in-depth and complex, the demand for large space structures is increasing. These structures not only need to have sufficient strength and rigidity to withstand various loads in the space environment, but also need to be highly modular and scalable to adapt to different mission requirements and on-orbit environments.

[0003] Large-scale space truss structures in the existing technology can effectively meet these requirements through high-strength and high-rigidity structural systems, and become an important component of space exploration missions. However, the truss structures in the existing technology are often connected by welding, which is not convenient for rapid installation, disassembly and subsequent maintenance. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a large-scale spatial truss structure suitable for on-track assembly. Through the design of the connecting components and the rapid connection and disassembly of different truss links, it is convenient to assemble trusses of different structures and maintain the trusses in the later stage. At the same time, the truss structure is manufactured by composite material additive manufacturing technology, which facilitates the on-track assembly and in-situ manufacturing of the truss structure.

[0005] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: a large-scale space truss structure suitable for on-track assembly, comprising a plurality of horizontal trusses, vertical trusses and inclined trusses, horizontal connection assemblies for connecting the horizontal trusses are provided between adjacent horizontal trusses, vertical connection assemblies for connecting the vertical trusses are provided between adjacent vertical trusses, and inclined connection assemblies for connecting the inclined trusses are provided at both ends of the inclined trusses;

[0006] A plurality of horizontal trusses, vertical trusses and inclined trusses are assembled by horizontal connection components, vertical connection components and inclined connection components to realize horizontal connection, vertical connection and inclined connection, so as to be combined into trusses of different structures.

[0007] The technical principle of the above scheme is as follows: a number of horizontal trusses in the horizontal direction are connected and fixed to each other through a horizontal connecting assembly, thereby forming a horizontal truss frame body of the required length of the truss; a number of vertical trusses in the vertical direction are connected and fixed to each other through a vertical connecting assembly, thereby forming a vertical truss frame body of the required length of the truss; the vertical trusses and horizontal trusses, the vertical trusses and the inclined trusses, and the horizontal trusses and the inclined trusses are connected and fixed through the inclined connecting assembly, and the horizontal trusses, vertical trusses and inclined trusses in the vertical and inclined directions are staggered and spliced ​​with each other according to the truss requirements to form a complete truss structure.

[0008] Furthermore, the horizontal connection assembly includes a fixed seat, the outer wall of the fixed seat is fixedly connected to the inner wall of one end of the horizontal truss, the side wall of the fixed seat is fixedly connected with a conical expansion seat, and the expansion seat is fixedly connected with a threaded rod at one end away from the fixed seat; the inner wall of one end of the adjacent horizontal truss is fixedly connected with a threaded seat, the threaded seat is threadedly matched with the threaded rod, and the end of the threaded seat close to the threaded rod is circumferentially fixedly connected with a plurality of expansion rods, and the expansion rods are all slidably matched with the expansion seat and the threaded rod.

[0009] The working principle is: when two horizontal trusses are connected to each other, the threaded rod at one end of one of the horizontal trusses is rotated forward and inserted into the threaded seat at one end of the other horizontal truss. At this time, the expansion seat extends toward the inside of the expansion rod. Since the expansion seat is conical, when the expansion seat extends toward the inside of the expansion rod, the expansion rod will be squeezed by the side wall of the expansion seat and deformed. The expansion rod bends and expands in all directions, so that the outer wall of the expansion rod is close to the inner wall of the horizontal truss on which the expansion rod is arranged. The longer the distance that the threaded rod is rotated and inserted into the threaded seat, the longer the extension distance of the expansion seat, the greater the deformation of the expansion rod, the tighter the outer wall of the expansion rod fits with the inner wall of the horizontal truss, and the better the fixing effect.

[0010] When disassembly is required, the two horizontal trusses are rotated in opposite directions, the threaded rod withdraws from the threaded seat, the expansion seat leaves the expansion rod, the expansion rod recovers its shape after losing the squeezing of the expansion seat, the squeezing of the expansion rod on the inner wall of the horizontal truss disappears, and the two horizontal trusses can be easily disassembled.

[0011] In this way, the horizontal trusses can be assembled only by relative rotation, and can be quickly disassembled only by reverse rotation.

[0012] Furthermore, the vertical connection assembly includes a fixing nail with a thread, a threaded hole is opened on the side wall at the lower end of the vertical truss, the fixing nail and the threaded hole are threadedly matched, and a convex seat is slidably matched inside the lower end of the vertical truss, and a conical groove is opened on the side wall near the fixing nail on the upper part of the convex seat, and the fixing nail is slidably matched with the conical groove; a convex groove is opened below the convex seat, and a convex block is slidably matched inside the convex groove, and a plurality of tension springs are fixedly connected to the bottom of the convex seat at the horizontal position of the middle of the convex block; a limiting groove is opened on the upper part of the convex block, and a horizontal limiting rod is vertically slidably matched in the limiting groove, and both ends of the limiting rod extend to the inside of the convex seat and are fixedly connected to the convex seat; a clamping block is hingedly connected to the side wall of the convex block along its circumference, and the clamping block is fixedly connected to a spring on one side close to the convex block, and the spring is fixedly connected to the convex block at one end away from the clamping block; a T-shaped seat is fixedly connected to the top end of the adjacent vertical truss, the clamping block is detachably connected to the side wall of the T-shaped seat, and the clamping block also slides with the bottom of the convex seat.

[0013] The working principle is: when two vertical trusses are connected to each other, the bottom of the upper vertical truss is aligned with the top of the lower vertical truss for splicing; at this time, the upper convex block begins to move upward due to the squeezing of the lower T-shaped seat, and the convex block moves upward in the convex groove and drives the clamping block to move upward. At this time, the inner side of the top of the clamping block is squeezed by the outer side of the bottom of the convex seat and rotates toward the outside of the convex seat. Since the clamping block is hinged to the convex block, when the top of the clamping block rotates toward the outside of the convex seat, the bottom of the clamping block will rotate inward and clamp the T-shaped seat at the same time. At this time, the fixing nail is rotated through the threaded hole and inserted into the tapered groove, so that the convex seat cannot slide, thereby locking the upper and lower vertical trusses.

[0014] When the two vertical trusses need to be disassembled, remove the fixing nails, move the upper vertical truss upward and remove it. At this time, the convex seat loses the limiting effect of the fixing nails and the vertical truss, the clamping block loses the squeezing of the convex seat, and the bottom of the clamping block opens under the action of the spring, and the clamping block is separated from the T-shaped seat, so that the lower vertical truss can be easily disassembled.

[0015] This method allows the vertical trusses to be assembled simply by splicing them together, and can be quickly disassembled by simply removing the fixing nails.

[0016] Furthermore, the inclined connection assembly includes a clamp and an extrusion nail with a thread. An extrusion groove that cooperates with the thread of the extrusion nail is vertically opened in the clamp, and an extrusion gap is horizontally opened in the clamp. The extrusion gap divides the clamp into an upper clamp and a lower clamp. The upper clamp has a placement groove for placing horizontal trusses and vertical trusses. The placement groove is located above the extrusion groove and is connected. An inclined groove for placing the inclined trusses is commonly opened between the upper clamp and the lower clamp.

[0017] The working principle is as follows: this scheme takes the horizontal truss as an example, puts the horizontal truss into the placement slot, rotates the clamp on the horizontal truss according to the truss requirements, so as to adjust the angle of the inclined slot in the clamp; after the adjustment is completed, insert the inclined truss into the inclined slot; after the insertion is completed, rotate the extrusion nail into the extrusion slot, the extrusion slot and the extrusion nail thread cooperate, due to the existence of the extrusion gap, the extrusion gap is reduced, the extrusion nail will pull the upper clamp and the lower clamp together, the diameter of the inclined slot is reduced, and the side wall of the inclined slot squeezes and fixes the inclined truss. At the same time, because the placement slot is located above the extrusion slot and is connected, the top of the extrusion nail will squeeze the horizontal truss in the placement slot, so that the horizontal truss is also fixed. When the horizontal truss and the inclined truss need to be disassembled, the extrusion nail can be removed.

[0018] In this way, the inclined truss can be quickly connected or disassembled with other horizontal trusses, vertical trusses and inclined trusses by simply rotating the extrusion nails, which greatly improves the assembly efficiency of the truss.

[0019] Furthermore, the inner wall edge of one end of the expansion rod close to the expansion seat is inclined.

[0020] The working principle is: this design allows the inner wall of the expansion rod to better match the tapered expansion seat, allowing the expansion seat to enter the expansion rod more smoothly, reducing resistance during assembly and avoiding jamming. This improves the assembly efficiency of the truss and reduces the risk of connection failure due to improper assembly.

[0021] Furthermore, an arc groove is formed on the inner side wall of the expansion rod near one end of the threaded seat.

[0022] Beneficial effect: This design enables the expansion rod to deform better when the expansion seat enters the expansion rod, thereby achieving a better fixing effect on the horizontal truss. Since the expansion rod needs to be deformed by force, the part of the expansion rod with the arc groove is relatively more flexible than other parts. This design can transfer most of the force on the expansion rod to the part with better flexibility, reducing the damage of the expansion rod due to force, thereby better performing the connection and fixing work.

[0023] Furthermore, the edge of the outer side wall of the bottom of the convex seat is inclined.

[0024] The working principle is that the inclined outer wall of the convex seat can disperse the contact stress more evenly when squeezing the clamping block, so that the clamping block can rotate more smoothly. At the same time, this design also reduces the wear between the clamping block and the convex seat when they move relative to each other; this helps to extend the service life of the clamping block and the convex seat, and reduce the risk of performance degradation due to wear.

[0025] Furthermore, the T-shaped seat side wall sleeve is fixedly connected with a flexible layer.

[0026] The working principle is: when the clamping block clamps the side wall of the T-seat, the presence of the flexible layer can greatly reduce the scratches on the side wall of the T-seat caused by the sharp part of the clamping block and the wear on the clamping block. At the same time, the flexible layer will produce corresponding deformation when the clamping block is clamped, filling the gap between the clamping block and the side wall of the T-seat, so that the clamping block can better clamp the T-seat.

[0027] Furthermore, a telescopic slot is opened at the bottom of the T-shaped seat, and a double-headed electric control cylinder is fixedly connected in the telescopic slot, and the output shaft of the double-headed electric control cylinder slides with the telescopic slot. The clamping and loosening rely on the output shaft of the double-headed electric control cylinder, and the telescopic slot only provides movement space for the output shaft; the output shaft distance is adjusted to adapt to different pipe diameters, thereby achieving tensioning and loosening.

[0028] The working principle is: this design enables the T-seat to be installed in pipes of different diameters. The T-seat can be fixed inside pipes of different diameters by simply adjusting the output distance of the double-headed electric control cylinder output shaft, thereby achieving splicing of pipes of different diameters. When the T-seat needs to be disassembled, it is only necessary to retract the output shaft of the double-headed electric control cylinder to complete the disassembly, and the T-seat can then be recycled, thereby improving the splicing efficiency and reducing the cost of consumables.

[0029] Furthermore, one end of the double-headed electric control cylinder output shaft close to the inner wall of the vertical truss is fixedly connected with an anti-slip sleeve.

[0030] The working principle is: the design of the anti-slip sleeve enables the output shaft of the double-headed electric control cylinder to be more stably fixed on the inner wall of the vertical truss, thereby achieving a better connection effect.

[0031] Beneficial effects of the present invention:

[0032] 1. Through the design of horizontal connection components, vertical connection components and inclined connection components, the present invention allows horizontal trusses, vertical trusses and inclined trusses in different directions to be flexibly spliced ​​and combined at any angle to form space trusses with different structures and shapes. This design greatly improves the flexibility and reconfigurability of the truss structure and can meet the changes in various space tasks and needs.

[0033] 2. The design of the connection components of the present invention makes the assembly process of the truss quick and easy, reducing the complexity and cost of on-track operations. At the same time, it is also convenient for later maintenance and replacement. When a part is damaged or needs to be upgraded, it can be easily and quickly disassembled and the corresponding components can be replaced, extending the service life of the overall structure.

[0034] 3. The present invention makes the height, width and angle of the truss structure adjustable through the design of horizontal connection components, vertical connection components and inclined connection components, so that the truss can adapt to the needs of various space missions, such as space station construction, space telescope support structure, solar panel support or assisting astronauts in extravehicular missions, etc., providing support points for astronauts and various equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the splicing of a truss embodiment of the present invention.

[0036] Figure 2 It is a front cross-sectional view of an embodiment of a horizontal connection assembly of the present invention.

[0037] Figure 3 It is a front cross-sectional view of an embodiment of a vertical connection assembly of the present invention.

[0038] Figure 4 It is a front cross-sectional view of an embodiment of an inclined connection assembly of the present invention.

[0039] Figure 5 It is a side cross-sectional view of an embodiment of an inclined connection assembly of the present invention.

[0040] List of reference numerals:

[0041] Among them, 1. horizontal truss; 2. vertical truss; 3. inclined truss; 4. fixed seat; 5. expansion seat; 6. threaded rod; 7. expansion rod; 8. threaded seat; 9. fixing nail; 10. convex seat; 11. limit rod; 12. convex block; 13. tension spring; 14. clamping block; 15. spring; 16. T-type seat; 17. double-headed electric cylinder; 18. anti-slip sleeve; 19. upper splint; 20. lower splint; 21. extrusion nail. DETAILED DESCRIPTION

[0042] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0043] Embodiment 1:

[0044] As attached Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown: a large-scale spatial truss structure suitable for on-track assembly, including a plurality of horizontal trusses 1, vertical trusses 2 and inclined trusses 3, horizontal connection components for connecting the horizontal trusses 1 are provided between adjacent horizontal trusses 1, vertical connection components for connecting the vertical trusses 2 are provided between adjacent vertical trusses 2, and inclined connection components for connecting the inclined trusses 3 are provided at both ends of the inclined trusses 3.

[0045] A plurality of horizontal trusses 1, vertical trusses 2 and inclined trusses 3 are assembled into trusses of different structures by horizontal connection components, vertical connection components and inclined connection components, and are connected horizontally, vertically and obliquely.

[0046] The horizontal connection assembly includes a fixed seat 4, the outer side wall of the fixed seat 4 is integrally formed with the inner wall of one end of the horizontal truss 1, the side wall of the fixed seat 4 is integrally formed with a conical expansion seat 5, and the expansion seat 5 is integrally formed with a threaded rod 6 at one end away from the fixed seat 4; the inner wall of the adjacent horizontal truss 1 is integrally formed with a threaded seat 8, and the threaded seat 8 is threadedly matched with the threaded rod 6; the end of the threaded seat 8 close to the threaded rod 6 is integrally formed with a plurality of circumferentially arranged expansion rods 7, and the expansion rods 7 are all slidably matched with the expansion seat 5 and the threaded rod 6.

[0047] The vertical connection assembly includes a fixing nail 9 with a thread, a threaded hole is opened on the side wall of the lower end of the vertical truss 2, the fixing nail 9 and the threaded hole are threadedly matched, a convex seat 10 is slidably matched inside the lower end of the vertical truss 2, a conical groove is opened on the side wall of the upper part of the convex seat 10 near the fixing nail 9, and the fixing nail 9 is slidably matched with the conical groove; a convex groove is opened below the convex seat 10, a convex block 12 is slidably matched inside the convex groove, and a number of tension springs 13 are fixedly bonded to the bottom of the convex seat 10 at a horizontal position in the middle part.

[0048] A limiting groove is provided on the upper part of the convex block 12, and a horizontal limiting rod 11 is vertically slidably fitted in the limiting groove. Both ends of the limiting rod 11 extend into the interior of the convex seat 10 and are fixedly bonded to the convex seat 10; a clamping block 14 is hingedly connected to the side wall of the lower part of the convex block 12 along its circumference, and a spring 15 is fixedly bonded to the side of the clamping block 14 close to the convex block 12, and the end of the spring 15 away from the clamping block 14 is fixedly bonded to the convex block 12; a T-shaped seat 16 is fixedly connected to the top end of the adjacent vertical trusses 2 with internal bolts, and the clamping block 14 and the T-shaped seat 16 are detachably engaged, and the clamping block 14 also slides with the bottom of the convex seat 10.

[0049] The inclined connection assembly includes a clamp and an extrusion nail 21 with a thread. An extrusion groove that matches the thread of the extrusion nail 21 is vertically opened in the clamp; an extrusion gap is horizontally opened in the clamp, and the extrusion gap divides the clamp into an upper clamp 19 and a lower clamp 20. The upper clamp 19 has a placement groove for placing the horizontal truss 1 and the vertical truss 2. The placement groove is located above the extrusion groove and is connected. An inclined groove for placing the inclined truss 3 is jointly opened between the upper clamp 19 and the lower clamp 20.

[0050] The specific implementation process is as follows:

[0051] When two horizontal trusses 1 are connected to each other, the threaded rod 6 at one end of one of the horizontal trusses 1 is rotated forward and inserted into the threaded seat 8 at one end of the other horizontal truss 1. At this time, the expansion seat 5 extends toward the inside of the expansion rod 7. Since the expansion seat 5 is conical, when the expansion seat 5 extends toward the inside of the expansion rod 7, the expansion rod 7 will be squeezed by the side wall of the expansion seat 5 and deformed. The expansion rod 7 bends and expands in all directions, so that the outer wall of the expansion rod 7 is close to the inner wall of the horizontal truss 2 on which the expansion rod 7 is arranged. The longer the distance that the threaded rod 6 is rotated and inserted into the threaded seat 8, the longer the extension distance of the expansion seat 5 is, the greater the deformation of the expansion rod 7 is, the tighter the outer wall of the expansion rod 7 fits with the inner wall of the horizontal truss 1, and the better the fixing effect will be.

[0052] When disassembly is required, the two horizontal trusses 1 are rotated in opposite directions relative to each other, the threaded rod 6 withdraws from the threaded seat 8, the expansion seat 5 leaves the expansion rod 7, and the expansion rod 7 recovers its shape after losing the squeezing of the expansion seat 5. The squeezing of the expansion rod 7 on the inner wall of the horizontal truss 1 disappears, and the two horizontal trusses 1 can be easily disassembled.

[0053] In this way, the horizontal trusses 1 can be assembled only by relative rotation, and can be quickly disassembled only by reverse rotation.

[0054] When the two vertical trusses 2 are connected to each other, the bottom of the upper vertical truss 2 is aligned with the top of the lower vertical truss 2 for splicing; at this time, the upper convex block 12 is squeezed by the lower T-shaped seat 16 and begins to move upward, the convex block 12 moves upward in the convex groove and drives the clamping block 14 to move upward, at this time, the inner side of the top of the clamping block 14 is squeezed by the outer side of the bottom of the convex seat 10 and rotates toward the outside of the convex seat 10. Since the clamping block 14 is hinged to the convex block 12, when the top of the clamping block 14 rotates toward the outside of the convex seat 10, the bottom of the clamping block 14 will rotate inward and clamp the T-shaped seat 16 at the same time. At this time, the fixing nail 9 is rotated and inserted into the tapered groove through the threaded hole, and the fixing nail 9 locks the convex seat 10, so that the convex seat 10 cannot slide, and the upper and lower vertical trusses 2 can be locked.

[0055] When the two vertical trusses 2 need to be disassembled, remove the fixing nails 9, move the upper vertical truss 2 upward and remove it, at this time, the convex seat 10 loses the limiting effect of the fixing nails 9 and the vertical truss 2, the clamping block 14 loses the squeezing of the convex seat 10, and the bottom of the clamping block 14 opens under the action of the spring 15, and the clamping block 14 is separated from the T-shaped seat 16, so that the lower vertical truss 2 can be easily disassembled.

[0056] In this way, the vertical trusses 2 can be assembled by simply splicing, and can be quickly disassembled by simply removing the fixing nails 9.

[0057] The tilting assembly can connect and fix the vertical truss 2 and the horizontal truss 1, the vertical truss 2 and the tilting truss 3, and the horizontal truss 1 and the tilting truss 3. Figure 4 As shown, this scheme takes the horizontal truss 1 and the inclined truss 3 as an example, the horizontal truss 1 is placed in the placement groove, and the clamp is rotated on the horizontal truss 1 according to the truss requirements to adjust the angle of the inclined groove in the clamp; after the adjustment is completed, the inclined truss 3 is inserted into the inclined groove; after the insertion is completed, the extrusion nail 21 is rotated into the extrusion groove, and the extrusion nail 21 is matched with the extrusion groove thread. Due to the existence of the extrusion gap, the extrusion gap is reduced, and the extrusion nail 21 will pull the upper clamp 19 and the lower clamp 20 together, and the diameter of the inclined groove is reduced. The side wall of the inclined groove thereby squeezes and fixes the inclined truss 3. At the same time, since the placement groove is located above the extrusion groove and is connected, the top of the extrusion nail 21 will squeeze the horizontal truss 1 in the placement groove, so that the horizontal truss 1 is also fixed.

[0058] When it is necessary to disassemble the horizontal truss 1 and the inclined truss 3, the squeezing nail 21 is rotated in the opposite direction to remove it, and the squeezing and fixing effect of the squeezing nail 21 on the horizontal truss 1 disappears. At the same time, the squeezing gap is restored, and the squeezing and fixing effect of the upper clamping plate 19 and the lower clamping plate 20 on the inclined truss 3 disappears. At this time, the horizontal truss 1 and the inclined truss 3 can be easily disassembled.

[0059] In this way, the inclined truss 3 can be quickly connected or disassembled with other horizontal trusses 1, vertical trusses 2 and inclined trusses 3 only by rotating the extrusion nails 21, which greatly improves the assembly efficiency of the truss.

[0060] In this solution, the horizontal truss 1, the vertical truss 2, the inclined truss 3, the horizontal connection assembly, the vertical connection assembly and the inclined connection assembly are all manufactured using composite material additive manufacturing.

[0061] The present invention, through the design of horizontal connection components, vertical connection components and inclined connection components, enables horizontal trusses 1, vertical trusses 2 and inclined trusses 3 in different directions to be flexibly spliced ​​and combined at any angle to form space trusses of different structures and shapes. This design greatly improves the flexibility and reconfigurability of the truss structure, and can meet the changes in various space tasks and needs.

[0062] The present invention makes the height, width and angle of the truss structure adjustable through the design of horizontal connection components, vertical connection components and inclined connection components, so that the truss can adapt to the needs of various space missions, such as space station construction, space telescope support structure, solar panel support or assisting astronauts in extravehicular missions, etc., providing support points for astronauts and various equipment.

[0063] The invention makes the assembly process of the truss quick and easy through the design of the horizontal connection assembly, the vertical connection assembly and the inclined connection assembly, reducing the complexity and cost of the on-track operation. At the same time, it is also convenient for later maintenance and replacement. When a part of the truss is damaged or needs to be upgraded, it can be easily and quickly disassembled and the corresponding components can be replaced, extending the service life of the overall structure.

[0064] The invention makes the assembly process of the truss quick and easy through the design of the horizontal connection assembly, the vertical connection assembly and the inclined connection assembly, reducing the complexity and cost of the on-track operation. At the same time, it is also convenient for later maintenance and replacement. When a part of the truss is damaged or needs to be upgraded, it can be easily and quickly disassembled and the corresponding components can be replaced, extending the service life of the overall structure.

[0065] Embodiment 2:

[0066] As attached Figure 2 As shown, the difference from the above embodiment is that the inner wall edge of the expansion rod 7 close to the expansion seat 5 is inclined.

[0067] The specific implementation process is as follows:

[0068] When the expansion seat 5 enters the expansion rod 7, the inclined inner wall of the expansion rod 7 can better match the tapered expansion seat 5, so that the expansion seat 5 enters the expansion rod 7 more smoothly, reducing the resistance during the assembly process and avoiding the jamming phenomenon. This improves the assembly efficiency of the truss and reduces the risk of connection failure due to improper assembly.

[0069] Embodiment 3:

[0070] As attached Figure 2 As shown, the difference from the above embodiment is that an arc groove is formed on the inner side wall of the expansion rod 7 near the end of the threaded seat 8.

[0071] The specific implementation process is as follows:

[0072] When the expansion rod 7 enters the expansion seat 5, the portion of the expansion rod 7 with the arc groove is relatively more flexible than other portions. This design can transfer most of the force exerted on the expansion rod 7 to the portion of the expansion rod 7 with better flexibility, thereby reducing the possibility of damage to the expansion rod 7 due to the force, thereby better deforming the expansion rod 7 and achieving a better fixing effect on the horizontal truss 1.

[0073] Embodiment 4:

[0074] As attached Figure 3 As shown, the difference from the above-mentioned embodiment is that the edge of the outer side wall of the bottom of the convex seat 10 is inclined.

[0075] The specific implementation process is as follows:

[0076] The inclined outer wall of the convex seat 10 can disperse the contact stress more evenly when squeezing the clamping block 14, so that the clamping block 14 can rotate more smoothly. At the same time, such a design also reduces the wear between the clamping block 14 and the convex seat 10 when the two move relative to each other; this helps to extend the service life of the clamping block 14 and the convex seat 10, and reduce the risk of performance degradation due to wear.

[0077] Embodiment 5:

[0078] As attached Figure 3 As shown, the difference from the above embodiment is that the side wall sleeve of the T-shaped seat 16 is fixedly bonded with a flexible layer.

[0079] The specific implementation process is as follows:

[0080] When the clamping block 14 clamps the side wall of the T-shaped seat 16, the presence of the flexible layer can greatly reduce the scratches on the side wall of the T-shaped seat 16 by the sharp part of the clamping block 14 and the wear on the clamping block 14. At the same time, since the flexible layer will produce corresponding deformation when the clamping block 14 is clamped, the gap between the clamping block 14 and the side wall of the T-shaped seat 16 is filled, so that the clamping block 14 can better clamp the T-shaped seat 16.

[0081] Embodiment 6:

[0082] As attached Figure 3 As shown, the difference from the above embodiment is that a telescopic groove is opened at the bottom of the T-shaped seat 16, and a double-headed electric control cylinder 17 is embedded and installed in the telescopic groove. The output shaft of the double-headed electric control cylinder 17 slides in the telescopic groove, and an anti-slip sleeve 18 is fixedly bonded to one end of the output shaft of the double-headed electric control cylinder 17 close to the inner wall of the vertical truss 2.

[0083] The specific implementation process is as follows:

[0084] When the T-seat 16 is installed inside the vertical truss 2, it is only necessary to adjust the output distance of the output shaft of the double-headed electric control cylinder 17, and the T-seat 16 can be fixed inside the vertical trusses 2 of different diameters, thereby realizing the splicing of vertical trusses 2 with different diameters. When the T-seat 16 needs to be disassembled, it is only necessary to retract the output shaft of the double-headed electric control cylinder 17 to complete the disassembly, and then the T-seat 16 can be recycled, thereby improving the splicing efficiency and reducing the cost of consumables.

[0085] The design of the anti-slip sleeve 18 enables the output shaft of the double-headed electric control cylinder 17 to be more stably fixed on the inner wall of the vertical truss 2, thereby achieving a better connection effect.

[0086] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A large-scale spatial truss structure suitable for on-track assembly, characterized in that: The invention comprises a plurality of horizontal trusses (1), vertical trusses (2) and inclined trusses (3); a horizontal connection assembly for connecting the horizontal trusses (1) is provided between adjacent horizontal trusses (1); a vertical connection assembly for connecting the vertical trusses (2) is provided between adjacent vertical trusses (2); and inclined connection assemblies for connecting the inclined trusses (3) are provided at both ends of the inclined trusses (3); the plurality of horizontal trusses (1), vertical trusses (2) and inclined trusses (3) are assembled and combined into trusses of different structures by horizontal connection, vertical connection and inclined connection via the horizontal connection assemblies, vertical connection assemblies and inclined connection assemblies.

2. The large-scale space truss structure suitable for on-track assembly according to claim 1, characterized in that: The horizontal connection assembly comprises a fixing seat (4), the outer wall of the fixing seat (4) is fixedly connected to the inner wall of one end of the horizontal truss (1), the side wall of the fixing seat (4) is fixedly connected to a conical expansion seat (5), and the end of the expansion seat (5) away from the fixing seat (4) is fixedly connected to a threaded rod (6); the inner wall of one end of the adjacent horizontal truss (1) is fixedly connected to a threaded seat (8), and the threaded seat (8) is threadedly matched with the threaded rod (6); the end of the threaded seat (8) close to the threaded rod (6) is circumferentially fixedly connected to a plurality of expansion rods (7), and the expansion rods (7) are all slidably matched with the expansion seat (5) and the threaded rod (6).

3. The large-scale space truss structure suitable for on-track assembly according to claim 1, characterized in that: The vertical connection assembly comprises a fixing nail (9) with a thread, a threaded hole is formed on the side wall of the lower end of the vertical truss (2), the fixing nail (9) and the threaded hole are threadedly matched, a convex seat (10) is slidably matched inside the lower end of the vertical truss (2), a conical groove is formed on the side wall of the upper part of the convex seat (10) close to the fixing nail (9), the fixing nail (9) and the conical groove are slidably matched, a convex groove is formed below the convex seat (10), a convex block (12) is slidably matched in the convex groove, and a plurality of tension springs (13) are fixedly connected to the bottom of the convex seat (10) at a horizontal position in the middle part; a limiting groove is formed on the upper part of the convex block (12), and the limiting groove is vertically slidable in the limiting groove. The movable joint has a horizontal limit rod (11), both ends of which extend into the interior of the convex seat (10) and are fixedly connected to the convex seat (10); a clamping block (14) is hingedly connected to the lower side wall of the convex block (12) along its circumference, and a spring (15) is fixedly connected to the side of the clamping block (14) close to the convex block (12), and the end of the spring (15) away from the clamping block (14) is fixedly connected to the convex block (12); a T-shaped seat (16) is fixedly connected to the top of the adjacent vertical truss (2), and the clamping block (14) is detachably connected to the T-shaped seat (16), and the clamping block (14) is also slidably matched with the bottom of the convex seat (10).

4. The large-scale space truss structure suitable for on-track assembly according to claim 1, characterized in that: The inclined connection assembly comprises a clamping plate and an extrusion nail (21) with a thread, wherein an extrusion groove is vertically formed in the clamping plate and matches with the thread of the extrusion nail (21), and an extrusion gap is horizontally formed in the clamping plate, wherein the extrusion gap divides the clamping plate into an upper clamping plate (19) and a lower clamping plate (20), wherein the upper clamping plate (19) has a placement groove for placing a horizontal truss (1) and a vertical truss (2), wherein the placement groove is located above the extrusion groove and is connected, and an inclined groove for placing an inclined truss (3) is formed between the upper clamping plate (19) and the lower clamping plate (20).

5. The large-scale space truss structure suitable for on-track assembly according to claim 2, characterized in that: The inner wall edge of the expansion rod (7) close to one end of the expansion seat (5) is arranged inclined.

6. The large-scale space truss structure suitable for on-track assembly according to claim 2, characterized in that: The inner side wall of the expansion rod (7) close to one end of the threaded seat (8) is provided with an arc groove.

7. The large-scale space truss structure suitable for on-track assembly according to claim 3, characterized in that: The edge of the outer side wall of the bottom of the convex seat (10) is inclined.

8. The large-scale space truss structure suitable for on-track assembly according to claim 3, characterized in that: The side wall sleeve of the T-shaped seat (16) is fixedly connected with a flexible layer.

9. The large-scale space truss structure suitable for on-track assembly according to claim 3 or 8, characterized in that: A telescopic groove is formed at the bottom of the T-shaped seat (16), a double-headed electric control cylinder (17) is fixedly connected in the telescopic groove, and an output shaft of the double-headed electric control cylinder (17) is slidably matched with the telescopic groove.

10. The large-scale space truss structure suitable for on-track assembly according to claim 9, characterized in that: An anti-slip sleeve (18) is fixedly connected to one end of the output shaft of the double-headed electric control cylinder (17) close to the inner wall of the vertical truss (2).

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