A folding space truss closure device and method of assembly thereof

Abstract

This invention discloses a foldable space truss sealing device and its assembly method. The device includes a base structure, with a first folding frame vertically mounted at each end of the base structure. A second folding frame is installed between the front and rear ends of the two first folding frames, forming a rectangular truss. The base structure supports the rectangular truss. Both second folding frames are movably connected to the base structure. Multiple plug-in structures are installed between each second folding frame and the two first folding frames. Splicing structures are installed on the outer sides of the first folding frames and the outer sides of the base structure. This invention enables folding and collapsing, thus solving the technical problem that existing truss structures occupy a large volume during transportation, have a limited number of modules that can be transported at one time, and are difficult to meet the demand for rapid transportation of a large number of truss modules in flood control and disaster relief.

Description

Technical Field

[0001] This invention relates to flood control and disaster reduction devices, specifically to a foldable space truss plugging device and its assembly method. Background Technology

[0002] In the field of flood control and disaster reduction, dike breaches are characterized by their suddenness, destructive power, and short response window. After a breach occurs, it is necessary to quickly construct a dam to contain the water flow and control the disaster. Traditional damming methods mainly involve dumping earth and rocks, sinking ships, and constructing steel-timber-earth-rock composite dams. While these methods can be effective to some extent, they suffer from problems such as high material consumption, low construction efficiency, and poor structural stability.

[0003] In recent years, spatial truss structures have been increasingly used in dike breach sealing projects due to their advantages such as light weight, high strength, and good overall integrity. By deploying truss structures at the breach and fixing them with steel pipe piles, a stable sealing framework can be quickly formed. Combined with filling materials such as soil bags and stones, the breach can be sealed rapidly.

[0004] However, existing truss structures used in disaster relief still have the following technical shortcomings: Traditional trusses are mostly fixed in form, with rigid connections between members using welding or bolts, and cannot be folded or collapsed. They occupy a large volume during transportation, limiting the number that can be transported at one time, making it difficult to meet the demand for rapid transportation of large numbers of truss modules in breach rescue operations. Furthermore, the on-site installation of fixed trusses requires connecting each member individually, which is cumbersome and time-consuming, significantly falling short of the core requirements of "rapid response and flexible deployment" in breach rescue operations. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a foldable space truss plugging device and its assembly method. This device can be folded and retracted, thereby solving the technical problem that existing truss structures occupy a large volume during transportation and have a limited number of modules that can be transported at one time, making it difficult to meet the demand for rapid transportation of a large number of truss modules in flood control and disaster relief.

[0006] Technical Solution: The present invention provides a folding space truss blocking device, comprising a base structure, wherein a first folding frame is vertically installed at each end of the base structure, and a second folding frame is installed between the front and rear ends of the two first folding frames, the two first folding frames and the two second folding frames enclosing a rectangular truss, and the base structure is used to support the rectangular truss; both second folding frames are movably connected to the base structure; multiple plug-in structures are installed between each second folding frame and the two first folding frames, and splicing structures are installed on the outer side of the first folding frames and the outer side of the base structure.

[0007] Furthermore, the base structure includes a left-side support and a right-side support arranged at intervals. The inner cavities of the left-side support and the right-side support are fixedly connected to longitudinal supports. Two transverse supports are fixedly connected between the two longitudinal supports. The two longitudinal supports and the two transverse supports enclose a rectangular frame. A connecting frame is provided above each longitudinal support, and a first folding frame is installed above the connecting frame.

[0008] Furthermore, the first folding frame includes two parallel vertical frames, and a plurality of transverse connecting columns are fixedly connected between the two vertical frames.

[0009] Furthermore, sliders are fixedly installed on the bottom of the two vertical frames on opposite sides. A slide rail is vertically opened on the front and back of the base structure, and each slider slides in the corresponding slide rail. The slider is slidably connected to the inner cavity of the corresponding slide rail. A locking block is fixedly connected to the vertical frame above each slider. A locking groove is opened on the top of the front and back of the base structure. When the locking block is movably engaged in the inner cavity of the corresponding locking groove, the slider cannot continue to slide down along the slide rail, and the first folding frame no longer moves down, thus achieving the locking and fixing of the first folding frame and the base structure.

[0010] Furthermore, the top of the vertical frame is provided with a groove, and the bottom surface of the base structure is fixedly connected with a protrusion, the outer diameter of the protrusion matching the inner diameter of the groove; when two folding space truss blocking devices are stacked, the protrusion and groove are used to achieve vertical splicing and fixing of the upper and lower folding space truss blocking devices in the vertical direction.

[0011] Furthermore, the second folding frame includes a lower frame and an upper frame, the upper frame is attached to the top of the lower frame, and multiple hinged joints are installed between the upper frame and the lower frame; multiple longitudinal connecting columns are fixedly installed in the inner cavities of both the upper frame and the lower frame; a hinge is fixedly installed at the bottom of the lower frame, and the hinge is hingedly installed on the base structure.

[0012] Furthermore, the plug-in structure includes a fixing block, on which a pin sleeve is fixedly installed. A limit card is fixedly installed on the outer wall of the first folding frame, and a pin is movably engaged on the outer wall of the first folding frame. One end of the pin passes through the limit card and is inserted into the pin sleeve. The pin is engaged on the first folding frame, thereby achieving a rigid connection and fixation between the first folding frame and the second folding frame.

[0013] Furthermore, the splicing structure includes an upper splicing block and a limiting post, with the limiting post fixedly connected to the bottom of the upper splicing block; or the splicing structure includes a lower splicing block and a limiting hole, with the limiting hole provided on the lower splicing block.

[0014] Furthermore, there are three upper splicing blocks and three lower splicing blocks, with the three upper splicing blocks arranged in a triangular pattern and the three lower splicing blocks also arranged in a triangular pattern; the inner diameter of the limiting hole matches the outer diameter of the limiting post.

[0015] Based on the same inventive concept, the present invention provides an assembly method for a foldable space truss blocking device, applied to the aforementioned foldable space truss blocking device, the assembly method comprising:

[0016] S1. Place the folded base structure, the first folding frame, and the second folding frame on a flat surface. With manual or mechanical assistance, lift the vertical frame in the first folding frame upwards, so that the slider on the vertical frame slides along the slide rail. At the same time, unfold the second folding frame to complete the unfolding operation of a single blocking module.

[0017] S2. Continue to lift the vertical frame in the unfolded first folding frame to a vertical state, and at the same time, the locking block on the outer wall of the vertical frame is inserted into the inner cavity of the locking groove at the top of the left or right bracket to achieve locking and fixing of the first folding frame and the base structure.

[0018] S3. Flip the unfolded second folding frame upwards to a vertical position, aligning the second folding frame with the vertical frame in the first folding frame. Insert the pins in the plug-in structure into the pin sleeves in sequence to achieve a rigid connection and fixation between the second folding frame and the first folding frame, thus completing the assembly of a single plug module.

[0019] S4. When it is necessary to increase the height of the blocking device, take another folding space truss blocking device, insert the protrusion in the base structure of the other folding space truss blocking device into the groove cavity at the top of the vertical frame of the current folding space truss blocking device, so as to realize the vertical splicing and fixing of the upper and lower folding space truss blocking devices in the vertical direction.

[0020] S5. When it is necessary to increase the width of the blocking device, take another folding space truss blocking device, align the upper splicing block on the side of the other folding space truss blocking device with the lower splicing block on the side of the current folding space truss blocking device, so that the limiting post at the bottom of the upper splicing block is inserted into the limiting hole on the lower splicing block, thereby achieving the horizontal splicing and fixing of the two folding space truss blocking devices in the horizontal direction, forming a large-sized blocking truss structure.

[0021] Beneficial effects: Compared with the prior art, the significant technical effects of the present invention are as follows:

[0022] (1) By setting up a first folding frame and a second folding frame, the vertical frame in the first folding frame can slide and unfold along the slide rail, and the upper frame in the second folding frame can flip and unfold upward around the hinge joint, so that the whole device can quickly change from the folded state to the unfolded state, which greatly reduces the transportation and storage volume; at the same time, the groove at the top of the vertical frame and the protrusion at the bottom of the longitudinal support engage and position each other, the locking block is locked into the inner cavity of the slot to achieve locking and fixing, and the pin is inserted into the pin sleeve to achieve rigid connection between the second folding frame and the first folding frame. The rapid assembly of a single module can be completed without the aid of additional tools, which significantly improves the efficiency of on-site deployment and meets the core requirement of rapid response in dike breach rescue.

[0023] (2) This invention features a splicing structure on the base structure and the vertical frame. An upper splicing block with a limiting post is fixed to the right support and the right vertical frame, while a lower splicing block with a limiting hole is fixed to the left support and the left vertical frame. When the height of the plugging device needs to be increased, the protrusion of the upper module can be inserted into the groove of the lower module to achieve vertical splicing; when the width of the plugging device needs to be increased, the limiting post of the adjacent module can be inserted into the limiting hole to achieve horizontal splicing. This design adopts a "building block" assembly method, enabling multiple plugging modules to be quickly combined in both the vertical and horizontal directions to form a large-size truss structure, adaptable to dike breaches of different scales and shapes, and possessing good versatility and expandability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the flipped structure;

[0026] Figure 3 for Figure 2 A structural diagram from another angle;

[0027] Figure 4 This is an assembly diagram of the first folding frame and the second folding frame in this invention;

[0028] Figure 5 This is an assembly diagram of the second folding frame and the plug-in structure in this invention;

[0029] Figure 6 This is a schematic diagram of the base structure in this invention;

[0030] Figure 7 This is a schematic diagram of the structure of the first folding frame in this invention;

[0031] Figure 8 This is a schematic diagram of the structure of the second folding frame in this invention;

[0032] Figure 9This is a schematic diagram of two foldable space truss sealing devices joined laterally.

[0033] Figure 10 This is a schematic diagram of two foldable space truss blocking devices vertically spliced ​​together. Detailed Implementation

[0034] The technical solution of the present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0035] Example 1

[0036] like Figure 1-8 As shown, this invention discloses a foldable space truss plugging device, suitable for flood control and disaster reduction. It features foldability and portability, and specifically includes the following components: base structure 1, left side support 11, right side support 12, transverse support 13, longitudinal support 14, protrusion 15, connecting frame 16, slide rail 17, slot 18, first folding frame 2, vertical frame 21, transverse connecting column 22, groove 23, slider 24, locking block 25, second folding frame 3, lower frame 31, upper frame 32, hinge joint 33, longitudinal connecting column 34, hinge 35, plug-in structure 4, fixing block 41, pin sleeve 42, pin 43, limiting card 44, splicing structure 5, upper splicing block 51, limiting column 52, lower splicing block 53, and limiting hole 54. The specific installation method between each component is as follows:

[0037] like Figure 1 As shown, a first folding frame 2 is vertically installed at each end of the base structure 1, and a second folding frame 3 is installed between the front and rear ends of the two first folding frames 2. The two first folding frames 2 and the two second folding frames 3 enclose a rectangular truss, and the base structure 1 is used to support the rectangular truss.

[0038] Both second folding frames 3 are movably connected to the base structure 1.

[0039] Multiple plug-in structures 4 are installed between each second folding frame 3 and the two first folding frames 2. Splicing structures 5 are installed on the outer side of the first folding frame 2 and the outer side of the base structure 1.

[0040] like Figure 1-2 and Figure 6 As shown, the base structure 1 includes a left support 11 and a right support 12 arranged at intervals. A longitudinal support 14 is fixedly connected to the inner cavity of both the left support 11 and the right support 12. Two transverse supports 13 are fixedly connected between the two longitudinal supports 14. The two longitudinal supports 14 and the two transverse supports 13 enclose a rectangular frame. A connecting frame 16 is provided above each longitudinal support 14, and a first folding frame 2 is installed above the connecting frame 16.

[0041] like Figure 1 , Figure 4 and Figure 7 As shown, the first folding frame 2 includes two parallel vertical frames 21, and a plurality of transverse connecting columns 22 are fixedly connected between the two vertical frames 21. The arrangement of the transverse connecting columns 22 enhances the connection strength between the two vertical frames 21, making the first folding frame 2 form a stable frame structure.

[0042] like Figure 1-2 and Figure 4 As shown, sliders 24 are fixedly installed on the bottom of the two vertical supports 21 on their opposite sides. A slide rail 17 is vertically formed on both the front and back of the base structure 1, and each slider 24 slides within its corresponding slide rail 17. Specifically, two slide rails 17 are formed on the front and back of the left support 11 and the right support 12, for a total of four slide rails 17. The sliders 24 are slidably connected to the inner cavity of their respective slide rails 17. The sliding engagement between the sliders 24 and the slide rails 17 guides the unfolding movement of the vertical supports 21, ensuring that the vertical supports 21 move along a preset trajectory during unfolding, preventing skewness, and guaranteeing the positional accuracy after unfolding.

[0043] Each slider 24 has a locking block 25 fixedly connected to the vertical frame 21 above it, and the base structure 1 has a locking slot 18 on the top of both the front and back sides. Specifically, the left bracket 11 and the right bracket 12 have locking slots 18 on the top of both the front and back sides, for a total of four locking slots 18.

[0044] like Figure 1 As shown, when the locking block 25 is engaged in the corresponding slot 18, the slider 24 cannot slide further down along the slide rail 17, and the first folding frame 2 stops moving down, thus locking the first folding frame 2 to the base structure 1. When the vertical frame 21 is raised to a vertical position, the locking block 25 automatically engages in the slot 18, locking the first folding frame 2 to the base structure 1. This locking structure can achieve locking without the need for additional tools, improving on-site assembly efficiency.

[0045] like Figure 2 and Figure 4 As shown, the top of the vertical frame 21 has a groove 23, and the bottom surface of the longitudinal support 14 of the base structure 1 is fixedly connected to a protrusion 15, the outer diameter of the protrusion 15 matching the inner diameter of the groove 23. Figure 7 As shown, when two folding space truss blocking devices are stacked, the upper and lower folding space truss blocking devices are vertically spliced ​​and fixed in the vertical direction by the protrusion 15 and the groove 23. When it is necessary to increase the height of the blocking device, the protrusion 15 of the upper folding space truss blocking device is inserted into the inner cavity of the groove 23 at the top of the vertical frame 21 of the lower folding space truss blocking device, so as to achieve vertical splicing and fixation of the upper and lower folding space truss blocking devices in the height direction.

[0046] like Figure 1 , Figure 5 and Figure 8 As shown, the second folding frame 3 includes a lower frame 31 and an upper frame 32. The upper frame 32 is attached to the top of the lower frame 31, and multiple hinged joints 33 are installed between the upper frame 32 and the lower frame 31. Multiple longitudinal connecting posts 34 are fixedly installed within the cavities of both the upper frame 32 and the lower frame 31. Figure 3 As shown, a hinge 35 is fixedly installed at the bottom of the lower frame 31, and the hinge 35 is hinged to the two connecting frames 16 of the base structure 1. In the folded state, the upper frame 32 is fitted against the outside of the lower frame 31 in a stacked state, which greatly reduces the transportation volume. When unfolded, the upper frame 32 flips upward around the hinge 33 to a vertical state, forming a complete frame together with the lower frame 31. The longitudinal connecting column 34 enhances the overall rigidity of the folding frame 3.

[0047] like Figure 1 and Figure 5 As shown, the plug-in structure 4 includes a fixing block 41, on which a pin sleeve 42 is fixedly installed. A limit clip 44 is fixedly installed on the outer wall of the first folding frame 2, and a pin 43 is movably engaged on the outer wall of the first folding frame 2. Specifically, the fixing block 41 is fixedly connected to the lower frame 31 or the upper frame 32, and a pin sleeve 42 is fixedly installed on each fixing block 41. A limit clip 44 is fixedly installed on the outer wall of the vertical frame 21, and a pin 43 is movably engaged on the outer wall of the vertical frame 21. One end of the pin 43 passes through the limit clip 44 and inserts into the pin sleeve 42. The pin 43 is engaged on the first folding frame 2, achieving a rigid connection between the first folding frame 2 and the second folding frame 3. When the second folding frame 3 is flipped to the vertical position, the pins 43 are sequentially inserted into the inner cavity of the pin sleeve 42 on the fixing block 41, firmly connecting the second folding frame 3 to the vertical frame 21.

[0048] like Figure 2 and Figure 3 As shown, the splicing structure 5 includes an upper splicing block 51 and a limiting post 52, with the limiting post 52 fixedly connected to the bottom of the upper splicing block 51; or the splicing structure 5 includes a lower splicing block 53 and a limiting hole 54, with the limiting hole 54 provided on the lower splicing block 53. In this embodiment, the splicing structure 5 includes multiple upper splicing blocks 51, which are respectively fixedly connected to the outer wall of the right support 12 and the outer wall of the corresponding vertical frame 21, and the bottom of each of the multiple upper splicing blocks 51 is fixedly connected to a limiting post 52. Lower splicing blocks 53 are fixedly connected to the outer wall of the left support 11 and the outer wall of the corresponding vertical frame 21, and the multiple lower splicing blocks 53 are each provided with a limiting hole 54.

[0049] When it is necessary to increase the width of the plugging device, align the upper splicing block 51 and the lower splicing block 53 of adjacent plugging devices, and insert the limit post 52 into the inner cavity of the limit hole 54, so as to realize the transverse splicing and fixing of the two left and right plugging devices in the horizontal direction. The cooperation between the limit post 52 and the limit hole 54 plays a role in rapid positioning and connection.

[0050] The number of the upper splicing blocks 51 and the number of the lower splicing blocks 53 are both three, the three upper splicing blocks 51 are arranged in a "pin" shape, and the three lower splicing blocks 53 are also arranged in a "pin" shape. The inner diameter of the limit hole 54 matches the outer diameter of the limit post 52. The three splicing points distributed in a pin shape form a stable triangular stress system, which ensures the connection strength and torsion resistance between the modules after transverse splicing. The limit hole 54 and the limit post 52 adopt tight fit, which reduces the shaking after splicing.

[0051] The present invention adopts a "building block" type assembling method, which enables a plurality of plugging devices to be rapidly combined in the height direction and the horizontal direction to form a large-size truss structure, adapts to embankment breaches of different scales and shapes, and has good versatility and expandability.

[0052] Example 2

[0053] The present invention further comprises an assembling method of a foldable space truss plugging device, which is applied to the foldable space truss plugging device described in Embodiment 1, and the assembling method comprises:

[0054] S1: Unload the base structure 1, the first folding frame 2 and the second folding frame 3 in a folded state from a transport vehicle, place them on a flat ground near the embankment breach, lift the vertical frame 21 in the first folding frame 2 upward manually or with mechanical assistance, so that the sliding block 24 on the vertical frame 21 slides along the sliding rail 17, and at the same time, turn the upper frame 32 in the second folding frame 3 upward around the hinged hinge 33 to unfold, so that the lower frame 31 and the upper frame 32 are unfolded from the overlapping state to a planar state, and the unfolding operation of a single plugging module is completed;

[0055] S2: Continue to lift the vertical frame 21 in the unfolded first folding frame 2 upward to a vertical state, and at the same time, the clamping block 25 on the outer wall of the vertical frame 21 is clamped into the inner cavity of the clamping groove 18 at the top of the left side support 11 or the right side support 12, so as to realize the locking and fixing of the first folding frame 2 and the base structure 1, and form a stable space truss frame;

[0056] S3: Turn the lower frame 31 in the unfolded second folding frame 3 upward to a vertical state through the hinge 35, align the lower frame 31 and the upper frame 32 of the second folding frame 3 with the vertical frame 21 in the first folding frame 2, insert the plug pin 43 in the plug-in structure 4 into the inner cavity of the pin sleeve 42 on the fixed block 41 sequentially, realize the rigid connection and fixation of the second folding frame 3 and the first folding frame 2, and complete the assembly of a single plugging module;

[0057] S4, such as Figure 10 As shown, when it is necessary to increase the height of the blocking device, another folding space truss blocking device is taken, and the protrusion 15 in the base structure 1 of the other folding space truss blocking device is inserted into the groove 23 cavity at the top of the vertical frame 21 in the current folding space truss blocking device, so as to realize the vertical splicing and fixing of the upper and lower folding space truss blocking devices in the vertical direction.

[0058] S5, such as Figure 9 As shown, when it is necessary to increase the width of the blocking device, another foldable space truss blocking device is taken, and the upper splicing block 51 on the side of the other foldable space truss blocking device is aligned with the lower splicing block 53 on the side of the current foldable space truss blocking device. The limiting post 52 at the bottom of the upper splicing block 51 is inserted into the inner cavity of the limiting hole 54 on the lower splicing block 53, so that the two foldable space truss blocking devices on the left and right are horizontally spliced ​​and fixed in the horizontal direction, forming a large-sized blocking truss structure. It is easy to operate and can be disassembled and folded after use for easy transportation.

Claims

1. A foldable space truss closure device, characterized by: The base structure (1) includes a base structure (1), with a first folding frame (2) vertically installed at each end of the base structure (1), and a second folding frame (3) installed between the front and rear ends of the two first folding frames (2). The two first folding frames (2) and the two second folding frames (3) enclose a rectangular truss, and the base structure (1) is used to support the rectangular truss. Both of the second folding frames (3) are movably connected to the base structure (1); Multiple plug-in structures (4) are installed between each of the second folding frames (3) and the two first folding frames (2), and splicing structures (5) are installed on the outer side (2) of the first folding frame and the outer side of the base structure (1).

2. The folding space truss closure device of claim 1, wherein: The base structure (1) includes a left side support (11) and a right side support (12) arranged at intervals. The inner cavity of the left side support (11) and the right side support (12) is fixedly connected with a longitudinal support (14). Two transverse supports (13) are fixedly connected between the two longitudinal supports (14). The two longitudinal supports (14) and the two transverse supports (13) enclose a rectangular frame. A connecting frame (16) is provided above each of the longitudinal supports (14), and a first folding frame (2) is installed above the connecting frame (16).

3. The folding space truss blocking device according to claim 1, characterized in that: The first folding frame (2) includes two parallel vertical frames (21), and a plurality of transverse connecting columns (22) are fixedly connected between the two vertical frames (21).

4. The folding space truss blocking device according to claim 3, characterized in that: The bottom of each of the two vertical frames (21) is fixedly installed with a slider (24) on the side away from each other. The base structure (1) has a slide rail (17) vertically opened on the front and back respectively. Each slider (24) slides in the corresponding slide rail (17). The slider (24) is slidably connected to the inner cavity of the corresponding slide rail (17). Each slider (24) has a locking block (25) fixedly connected to the vertical frame (21) above it, and the base structure (1) has a slot (18) on the top of both the front and back sides. When the card block (25) is engaged in the inner cavity of the corresponding card slot (18), the slider (24) cannot continue to slide down along the slide rail (17), and the first folding frame (2) no longer moves down, thus achieving the locking and fixing of the first folding frame (2) and the base structure (1).

5. The folding space truss blocking device according to claim 3, characterized in that: The top of the vertical frame (21) is provided with a groove (23), and the bottom surface of the base structure (1) is fixedly connected with a protrusion (15), the outer diameter of the protrusion (15) matches the inner diameter of the groove (23); When two foldable space truss plugging devices are stacked, the upper and lower foldable space truss plugging devices are vertically spliced ​​and fixed in the vertical direction by means of the protrusion (15) and the groove (23).

6. The folding space truss blocking device according to claim 1, characterized in that: The second folding frame (3) includes a lower frame (31) and an upper frame (32), the upper frame (32) is attached to the top of the lower frame (31), and a plurality of hinged joints (33) are installed between the upper frame (32) and the lower frame (31). Multiple longitudinal connecting columns (34) are fixedly installed in the inner cavities of the upper frame (32) and the lower frame (31); a hinge (35) is fixedly installed at the bottom of the lower frame (31), and the hinge (35) is hingedly installed on the base structure (1).

7. The folding space truss blocking device according to claim 1, characterized in that: The plug-in structure (4) includes a fixing block (41), a pin sleeve (42) is fixedly installed on the fixing block (41), a limit card (44) is fixedly installed on the outer wall of the first folding frame (2), and a plug (43) is movably connected to the outer wall of the first folding frame (2). One end of the pin (43) passes through the limiting card (44) and is inserted into the pin sleeve (42). The pin (43) is locked on the first folding frame (2) to achieve a rigid connection and fixation between the first folding frame (2) and the second folding frame (3).

8. The folding space truss blocking device according to claim 1, characterized in that: The splicing structure (5) includes an upper splicing block (51) and a limiting post (52), with the limiting post (52) fixedly connected to the bottom of the upper splicing block (51); or the splicing structure (5) includes a lower splicing block (53) and a limiting hole (54), with the limiting hole (54) opened on the lower splicing block (53).

9. The folding space truss blocking device according to claim 1, characterized in that: The number of upper splicing blocks (51) and lower splicing blocks (53) are both three. The three upper splicing blocks (51) are arranged in a triangular shape, and the three lower splicing blocks (53) are also arranged in a triangular shape. The inner diameter of the limiting hole (54) matches the outer diameter of the limiting post (52).

10. A method for assembling a foldable space truss sealing device, characterized in that, The assembly method for the folding space truss plugging device described in claim 1 includes: S1. Place the folded base structure (1), the first folding frame (2) and the second folding frame (3) on a flat ground. With human or mechanical assistance, lift the vertical frame (21) in the first folding frame (2) upwards, so that the slider (24) on the vertical frame (21) slides along the slide rail (17). At the same time, unfold the second folding frame (3) to complete the unfolding operation of a single plug module. S2. Continue to lift the vertical frame (21) in the unfolded first folding frame (2) to a vertical state. At the same time, the locking block (25) on the outer wall of the vertical frame (21) is inserted into the inner cavity of the slot (18) at the top of the left support (11) or the right support (12) to achieve the locking and fixing of the first folding frame (2) and the base structure (1). S3. Flip the unfolded second folding frame (3) upward to a vertical position, align the second folding frame (3) with the vertical frame (21) in the first folding frame (2), insert the pins (43) in the plug-in structure (4) into the pin sleeves (42) in sequence, realize the rigid connection and fixation between the second folding frame (3) and the first folding frame (2), and complete the assembly of a single plug module. S4. When it is necessary to increase the height of the plugging device, take another folding space truss plugging device and insert the protrusion (15) in the base structure (1) of the other folding space truss plugging device into the groove (23) at the top of the vertical frame (21) of the current folding space truss plugging device to achieve vertical splicing and fixing of the upper and lower folding space truss plugging devices in the vertical direction. S5. When it is necessary to increase the width of the blocking device, take another folding space truss blocking device, align the upper splicing block (51) on the side of the other folding space truss blocking device with the lower splicing block (53) on the side of the current folding space truss blocking device, so that the limiting post (52) at the bottom of the upper splicing block (51) is inserted into the limiting hole (54) on the lower splicing block (53), so as to realize the horizontal splicing and fixing of the two folding space truss blocking devices in the horizontal direction, forming a large-size blocking truss structure.

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