Splicing type civil air defense project anti-collapse shed frame

Abstract

The invention discloses a spliced anti-collapse shed frame for civil air defense engineering. The spliced anti-collapse shed frame comprises stand columns arranged on the two sides of a ramp, cross beams connected with the stand columns and longitudinal beams connected with the cross beams. The longitudinal beams and the cross beams are perpendicularly distributed, fixing sleeves are arranged on the longitudinal beams, the cross beams are arranged in the fixing sleeves in a penetrating mode, the cross beams can move and be locked in the fixing sleeves, the cross beams are distributed in a staggered mode in the length direction of the cross beams, clamping sleeves are further connected to the two sides of each cross beam, and the clamping sleeves are connected with the longitudinal beams and the cross beams. The clamping sleeve is connected with the stand column. According to the anti-collapse shed frame, the cross beams and the longitudinal beams are arranged in a vertically crossed mode, and rapid modular assembly is achieved through adjustable connecting structures such as the fixing sleeves and the clamping sleeves. The cross beams are distributed in a staggered manner, so that the cross beams can flexibly adapt to complex ramp trends such as arc-shaped and spiral ramps, and the problem that a traditional linear shed frame cannot be matched with a curve lane is solved.

Description

Technical Field

[0001] The present invention relates to the field of civil air defense projects, and in particular, to a spliced anti-collapse shed frame for civil air defense projects. Background Art

[0002] The anti-collapse shed frame is an important protective facility in civil air defense projects, mainly used to prevent the entrance and exit from being blocked due to explosion shock waves or building collapses during wartime, ensuring the safe evacuation of personnel and vehicles. Traditional shed frames mostly adopt a straight steel frame structure (such as a welded frame of rectangular steel pipes), which has the characteristics of simple structure and low cost, and is suitable for standard straight entrances and exits. However, with the complication of modern civil air defense project designs, especially in places such as underground garages and subway tunnels, spiral ramps, curved lanes or turning channels are often provided. The traditional straight shed frames have obvious deficiencies in adaptability and installation efficiency, which are mainly reflected in the following aspects: 1. Geometric adaptability problem: It is difficult for a straight shed frame to match the radius of curvature of a curved lane. Forced installation will result in protection blind spots (such as insufficient coverage at the turning point) or structural interference (such as collision between the shed frame and walls, pipelines). Some projects attempt to adjust the shape by on-site cutting and welding, but this will damage the original structural strength and is time-consuming and laborious. 2. Material management chaos: If an arc-shaped adapted shed frame is used, its components (such as curved beams, connectors) need to be prefabricated and stored. However, under the long-term combat readiness state (it may not be used for several years or even decades), on-site personnel may not be able to quickly locate and match parts due to missing labels, lost drawings or warehouse changes, resulting in installation delays. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a spliced anti-collapse shed frame for civil air defense projects.

[0004] A spliced anti-collapse shed frame for civil air defense projects provided by the present invention adopts the following technical solutions: A spliced anti-collapse shed frame for civil air defense projects includes columns arranged on both sides of the ramp, cross beams connected to the columns, and longitudinal beams connected to the cross beams; the longitudinal beams and the cross beams are vertically distributed. A fixed sleeve is provided on the longitudinal beam, the cross beam is inserted into the fixed sleeve, and the cross beam can move and be locked in the fixed sleeve. The positions of the cross beams in the length direction of the cross beam are staggered, and clamping sleeves are further connected to both sides of the cross beam, and the clamping sleeves are connected to the columns.

[0005] Through the above technical solution, the rapid modular assembly of the scaffolding structure is achieved through the vertical cross design of the crossbeam and the longitudinal beam and the adjustable connection of the fixing sleeve. The staggered distribution in the length direction of the crossbeam enables the overall structure to adapt to the direction of the curved ramp, solving the problem of the mismatch between the traditional straight scaffolding and the curved lane. The matching connection method of the ferrule and the column simplifies the on-site installation process, and the positioning adjustment can be completed without professional tools, which significantly improves the efficiency of emergency construction in the combat readiness state, while ensuring the uniform force distribution of the structure.

[0006] As a preferred embodiment of the present invention, the ferrule and the crossbeam are rotatably connected, and the ferrule and the crossbeam can be locked.

[0007] The above technical solution adopts the rotatable sleeve design to give the beam and column connection angle dynamic adjustment capability, effectively compensating for the installation position deviation of the column during construction. After the rotation angle is fixed by the locking mechanism, it can ensure the tight fit of the scaffold at the turning point of the arc ramp, eliminating the stress concentration problem caused by traditional rigid connection. This design is particularly suitable for complex scenes such as spiral ramps in underground garages, making non-standard angle splicing possible, and the rotating parts are locked with standardized bolts, which is convenient for maintenance and replacement.

[0008] As a preferred embodiment of the present invention, connecting parts are provided on both sides of the crossbeam, the connecting parts are connected to the closed end of the ferrule by bolts and locking nuts, the open end of the ferrule is sleeved on the column, and a locking structure is also provided between the ferrule and the column.

[0009] Through the above technical solution, a double fixing mechanism is formed through the bolt-nut locking structure of the connection part and the ferrule: the closed end provides the main load-bearing connection, and the open end is connected to the column and reinforced by the locking structure. This design disperses the lateral impact force to the entire column, greatly improving the anti-collapse performance.

[0010] As a preferred embodiment of the present invention, the column is a liftable structure.

[0011] Through the above technical solution, the lifting column structure breaks through the traditional fixed height limit and adapts to the needs of ramps with different slopes by adjusting the height of the lifting column. This design enables the same scaffolding to be applied to the stepped entrances and exits in underground projects, achieving "one frame for multiple uses". The lifting function can also compensate for the elevation difference caused by foundation settlement, ensuring that the top surface of the protection is always horizontal, avoiding blind spots or structural instability caused by inconsistent height.

[0012] As a preferred embodiment of the present invention, the column includes a base and a lifting column sleeved on the base, the base is fixedly connected to the embedded bottom plates embedded on both sides of the ramp, and the lifting column can be raised and lowered and locked on the base.

[0013] Through the above technical solution, the socket structure between the base and the lifting column, in cooperation with the embedded base plate, forms a three-level force transmission system: the impact load is first transmitted from the lifting column to the base and then dispersed to the embedded base plate. Multiple groups of fixed hole positions provide a quantitative standard for height adjustment, with an adjustment accuracy of up to 5 - 10 cm per gear, which can not only meet the passing height requirements of different vehicle types but also facilitate the rapid positioning of on-site personnel. This modular lifting solution is more adaptable to the long-term combat readiness storage environment compared to hydraulic adjustment, avoiding the aging and failure of precision components.

[0014] As a preference of the present invention, multiple groups of first fixing holes are provided in the height direction of the base, second fixing holes are provided on the lifting column, and the lifting column and the base are tightly connected by a locking bolt passing through the first fixing hole and the second fixing hole.

[0015] Through the above technical solution, the plug-in locking mechanism of the first fixing hole and the second fixing hole realizes the safety principle of "stepless adjustment and stepped fixation". Redundant constraints are formed by bolts passing through multiple groups of hole positions, and even if a single-point connection fails, the structure can still remain intact. This design particularly considers the shear resistance requirements under explosion shock, and the reinforcing rib plates around the hole positions can prevent stress tearing, ensuring that the lifting column does not undergo accidental settlement under dynamic loads, meeting the seismic requirements of the civil air defense project GB50038.

[0016] As a preference of the present invention, the longitudinal beam is a splicing structure. In the length direction of the ramp, adjacent two longitudinal beams are fixedly connected through a connecting device. The connecting device includes a first sleeve and a second sleeve, and the first sleeve and the second sleeve are hinged, and a locking and limiting mechanism for restricting their relative rotation is provided between the first sleeve and the second sleeve.

[0017] Through the above technical solution, the articulated longitudinal beam splicing device breaks through the length limitation of a single beam body and adapts to the curvature change of the ramp through the rotation of the first and second sleeves. The locking and limiting mechanism forms a rigid node after being unfolded, enabling the bearing capacity at the splicing position to reach more than 90% of the overall beam. This design realizes the construction concept of "linear units, curved combination". During storage, all longitudinal beams can have a unified specification, and during wartime, they can be quickly assembled into any arc through angle adjustment, solving the covering problem of large-curvature ramps.

[0018] As a preference of the present invention, the ends of the first sleeve and the second sleeve close to each other are provided with connecting hinges, and connecting shafts are respectively provided on the first sleeve and the second sleeve. Adjacent two connecting shafts are fixed by a connecting plate. One end of the connecting plate is provided with a positioning hole, and the other side of the connecting plate is provided with a kidney-shaped hole. One side of the connecting plate is sleeved on the connecting shaft of the first sleeve through the positioning hole, and the other end is sleeved on the connecting shaft of the second sleeve through the kidney-shaped hole. Threads are provided on the outer periphery of the connecting shaft, and the connecting plate is fixedly locked with the first sleeve and the second sleeve by a nut tightened with the threads on the connecting shaft, restricting the rotation of the first sleeve and the second sleeve.

[0019] Through the above technical solution, the kidney-shaped hole of the connecting plate provides the key degrees of freedom for dynamic adjustment: during installation, first determine the reference axis through the positioning hole, then slide along the kidney-shaped hole to finely adjust the angle of the second sleeve, and finally lock it with a nut. This process of "positioning first and then fixing" significantly reduces the construction difficulty of arc splicing, and even non-professionals can complete the precise docking of a 10m arc section within 30 minutes. The anti-loosening design of the threaded connecting shaft ensures that the joints do not loosen under long-term vibration environments.

[0020] As a preference of the present invention, the fixing sleeve and the cross beam are locked through bolts and nuts.

[0021] Through the above technical solution, the fixing sleeve locked by bolts and nuts forms a detachable sliding joint, allowing the cross beam to freely adjust the spacing during the installation stage and forming a rigid connection after locking. This design realizes the structural characteristic of "flexible first and then rigid": the flexible movement during the debugging stage is convenient for deviation correction, and the rigid fixation during the use stage ensures protection. Compared with traditional welded connections, this solution greatly improves the maintenance efficiency.

[0022] As a preference of the present invention, each cross beam is connected to at least two fixing sleeves in the length direction of the cross beam.

[0023] Through the above technical solution, the design of at least two fixing points for each cross beam creates a distributed support system: when a single fixing sleeve fails, the adjacent fixing sleeves can still form a load redistribution path through the longitudinal beam. The double fixing points restrain the torsional tendency of the cross beam, especially for the complex stress state generated by explosion shock waves.

[0024] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The anti-collapse shed of the present invention adopts a vertical cross layout of cross beams and longitudinal beams, and through adjustable connection structures such as fixing sleeves and clamping sleeves, realizes rapid modular assembly. The cross beams adopt a staggered distribution design, enabling them to flexibly adapt to complex ramp orientations such as arcs and spirals, solving the problem that traditional straight shed frames cannot match curved lanes. In addition, the longitudinal beams adopt a hinged splicing structure, and the angle is adjusted through a connecting device, enabling the shed to cover ramps with large curvatures while maintaining the stability of the overall structure. This modular design not only improves the installation efficiency but also reduces the storage and transportation costs, and is particularly suitable for rapid deployment during wartime.

[0025] 2. The columns of the shed frame adopt a liftable structure. Through the socket connection of the base and the lift column with multiple fixed hole positions, precise height adjustment can be achieved to meet the ramp requirements of different slopes. The ferrule and the cross beam are rotatably connected, allowing on-site fine-tuning of the installation angle, effectively compensating for construction errors or installation difficulties caused by the irregular shape of the ramp. This dual adjustment ability of height and angle enables the shed frame to adapt to complex environments such as underground garages and tunnels, ensuring that the protective top surface always remains horizontal or meets specific slope requirements, and improving the stability and protection effect of the overall structure.

[0026] 3. The shed frame adopts a multi-stage locking structure, including bolt locking of the cross beam and the fixed sleeve, the locking structure of the ferrule and the column, and the articulated limit mechanism at the splicing joint of the longitudinal beam, ensuring that each connection node can still remain stable during explosion shock or building collapse. The cross beam is connected to at least two fixed sleeves to form a distributed support system. Even if a single connection point fails, the load can still be transmitted through other nodes, preventing the overall structure from collapsing. In addition, the pin-type locking mechanism between the lift column and the base provides redundant constraints, enhancing the shear resistance and meeting the seismic and anti-explosion standards of civil air defense projects. These designs significantly improve the protection performance of the shed frame under extreme conditions, ensuring the safe evacuation of personnel and vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the three-dimensional structure diagram of the spliced anti-collapse shed frame for civil air defense projects of the present invention.

[0028] Figure 2 is Figure 1 the enlarged view of part A of

[0029] Figure 3 is the sectional view of the spliced anti-collapse shed frame for civil air defense projects of the present invention.

[0030] Figure 4 is the structure diagram of the spliced anti-collapse shed frame for civil air defense projects of the present invention showing the splicing of the longitudinal beam.

[0031] Figure 5 is the structure schematic diagram of the connecting device of the present invention.

[0032] DESCRIPTION OF THE REFERENCE NUMERALS: 1, ramp; 2, column; 3, cross beam; 4, longitudinal beam; 5, fixed sleeve; 6, ferrule; 7, connecting part; 8, connecting device; 9, ferrule bolt; 201, base; 202, lift column; 203, embedded base plate; 204, first fixed hole; 205, second fixed hole; 81, first sleeve; 82, second sleeve; 83, link hinge; 84, connecting shaft; 85, connecting plate; 86, positioning hole; 87, kidney-shaped hole. DETAILED DESCRIPTION OF THE INVENTION

[0033] The following further describes the present invention in detail Figures 1-5 with reference to the accompanying drawings.

[0034] Embodiment 1: Refer to the attached Figure 1 To the attached Figure 3 The present embodiment discloses a spliced ​​anti-collapse scaffold for civil air defense engineering, comprising columns 2 arranged on both sides of a ramp 1, beams 3 connected to the columns 2, and longitudinal beams 4 connected to the beams 3. In the present embodiment, the ramp 1 is an arc-shaped structure, and the columns 2 are evenly distributed on both sides of the ramp 1.

[0035] In this embodiment, the column 2 is a liftable structure, and the column 2 includes a base 201 and a lifting column 202 mounted on the base 201. The base 201 is fixedly connected to the embedded bottom plate 203 embedded on both sides of the ramp 1. The lifting column 202 can be lifted and lowered on the base 201. The cross section of the lifting column 202 can be a rectangular or circular structure. In this embodiment, the figure shows a circular cross-section structure, that is, the lifting column 202 adopts a cylindrical steel structure. In this embodiment, the base 201 also includes a section of cylindrical steel structure, the diameter of which is slightly smaller than the diameter of the lifting column 202, to ensure that the lifting column 202 can be mounted on the cylindrical steel structure of the base 201.

[0036] The cylindrical steel structure section of the base 201 is provided with a plurality of first fixing holes 204 in the height direction, and the lifting column 202 is provided with a second fixing hole 205. The lifting column 202 and the base 201 are locked and connected by locking bolts passing through the first fixing holes 204 and the second fixing holes 205. By setting the column 2 as a lifting structure, when the height of the ramp 1 is different, the height of the column 2 can be adjusted to ensure that the height of each beam 3 is consistent, so that the top of the scaffold is horizontal. Of course, the top of the scaffold can also be set to different slopes according to actual needs.

[0037] The longitudinal beam 4 and the cross beam 3 are vertically distributed, and a fixing sleeve 5 is arranged on the longitudinal beam 4, and the fixing sleeve 5 and the longitudinal beam 4 are welded or fixedly connected by bolts and nuts. The cross beam 3 is inserted into the fixing sleeve 5, and the cross beam 3 can move in the fixing sleeve 5 and can be locked by locking bolts. A clamping sleeve 6 is also connected on both sides of the cross beam 3, and the clamping sleeve 6 is used to connect with the column 2. In this embodiment, a connecting part 7 is arranged on both sides of the cross beam 3, and the connecting part 7 adopts a mounting sleeve, which is sleeved on both sides of the cross beam 3 and locked by locking bolts or screws, so that the connecting part 7 and the cross beam 3 are fixed. A clamping sleeve 6 is installed on the connecting part 7. One end (open end) of the clamping sleeve 6 is connected to the connecting part 7, and the other end is sleeved on the lifting column 202 of the column 2, and the clamping sleeve 6 is locked with the lifting column 202 by the locking bolt, thereby completing the fixation between the cross beam 3 and the column 2.

[0038] Each cross beam 3 is distributed in a staggered manner in its length direction. In this way, from a top-down perspective, one end of each cross beam 3 in the length direction will form an arc-shaped structure. The radian of this arc-shaped structure is set according to the radian of the ramp 1. In this way, the ferrule 6 connected to the end of each cross beam 3 can correspond to the position of the corresponding column 2 on the ramp 1, so that the pergola can adapt to the arc-shaped ramp structure. Moreover, the structure of each cross beam 3 is the same. When splicing and installing, there is no need to consider the numbering of each cross beam 3. Only need to stagger the positions of the cross beams 3 on-site and finally lock them with locking bolts. This structure only needs to determine the length of the cross beam 3 according to the width of the ramp 1, greatly improving the efficiency of on-site construction splicing. At the same time, because the structures of the cross beams 3 are all the same, even when splicing after many years, there is no need for material numbering, etc., making the installation fast and convenient.

[0039] Embodiment 2 The rest of this embodiment is the same as that of Embodiment 1. The difference is that in this embodiment, the cross-sections of the lifting column 202 and the base 201 are both rectangular structures (not shown in the figure). In this way, when the ferrule 6 is sleeved on the lifting column 202 of the column 2, due to the angle problem, the cross-section of the ferrule 6 and the cross-section of the lifting column 202 may not match, and it is not easy to sleeve the ferrule 6 on the lifting column 202 (when installing the column, it is impossible to make it reach the standard position completely). Therefore, in this embodiment, the connection part 7 between the ferrule 6 and the cross beam 3 is rotatably connected, and the connection part 7 between the ferrule 6 and the cross beam 3 can be locked. Specifically: in this embodiment, the ferrule 6 is connected to the connection part 7 through a ferrule bolt 9 and a locking nut. In this way, by loosening the locking nut, the angle of the ferrule 6 can be adjusted. Thus, by adjusting the angle of the ferrule 6, the ferrule 6 can be easily sleeved on the lifting column 202.

[0040] Embodiment 3: Refer to Figure 4 and Figure 5 In this embodiment, the rest is the same as that of Embodiment 2. The difference is that in this embodiment, when the radian of the arc-shaped ramp 1 is relatively large or the arc-shaped ramp 1 is relatively long, it is impossible to install with a straight longitudinal beam 4. Therefore, in this embodiment, the longitudinal beam 4 is a splicing structure. In the length direction of the ramp, adjacent two longitudinal beams 4 are fixedly connected through a connecting device 8. The connecting device 8 includes a first sleeve 81 and a second sleeve 82. The first sleeve 81 and the second sleeve 82 are hinged, and a locking and limiting mechanism for restricting their relative rotation is provided between the first sleeve 81 and the second sleeve 82.

[0041] Specifically, a connecting hinge 83 is provided at one end where the first sleeve 81 and the second sleeve 82 are close to each other, and connecting shafts 84 are respectively provided on the first sleeve 81 and the second sleeve 82. Adjacent two connecting shafts 84 are fixed through a connecting plate 85. A positioning hole 86 is provided at one end of the connecting plate 85, and a kidney-shaped hole 87 is provided on the other side of the connecting plate 85. One side of the connecting plate 85 is sleeved on the connecting shaft 84 of the first sleeve 81 through the positioning hole, and the other end is sleeved on the connecting shaft 84 of the second sleeve 82 through the kidney-shaped hole 87. Threads are provided on the outer periphery of the connecting shaft 84, and the connecting plate 85 is fixedly locked with the first sleeve 81 and the second sleeve 82 by tightening with nuts on the threads of the connecting shaft 84, restricting the rotation of the first sleeve 81 and the second sleeve 82. In order to ensure the connection strength between the first sleeve 81 and the second sleeve 82, in this embodiment, 2 groups of connecting plates 85 are provided.

[0042] By splicing the longitudinal beam 4, it can adapt to ramp structures with different lengths and different arcs.

[0043] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A spliced anti-collapse shed frame for civil air defense projects, characterized in that: It includes columns (2) arranged on both sides of a ramp (1), cross beams (3) connected to the columns (2), and longitudinal beams (4) connected to the cross beams (3); the longitudinal beams (4) and the cross beams (3) are vertically distributed. A fixed sleeve (5) is provided on the longitudinal beams (4), the cross beams (3) pass through the fixed sleeves (5), and the cross beams (3) can move and be locked within the fixed sleeves (5). The positions of the cross beams (3) in the length direction of the cross beams (3) are staggered. Clamping sleeves (6) are also connected to both sides of the cross beams (3), and the clamping sleeves (6) are connected to the columns (2).

2. The spliced anti-collapse shed frame for civil air defense project according to claim 1, characterized in that: The clamping sleeve (6) and the cross beam (3) are rotatably connected, and the clamping sleeve (6) and the cross beam (3) can be locked.

3. The spliced anti-collapse shed frame for civil air defense project according to claim 2, characterized in that: Connection parts (7) are provided on both sides of the cross beam (3). The connection parts (7) and the closed ends of the clamping sleeves (6) are connected by bolts and lock nuts. The open ends of the clamping sleeves (6) are sleeved on the columns (2), and a locking structure is also provided between the clamping sleeves (6) and the columns (2).

4. A spliced anti-collapse shed frame for civil air defense works according to claim 1, characterized in that: The column (2) is a liftable structure.

5. The spliced anti-collapse shed frame for civil air defense project according to claim 4, characterized in that: The column (2) includes a base (201) and a lifting column (202) sleeved on the base (201). The base (201) is fixedly connected to pre-buried base plates (203) pre-buried on both sides of the ramp (1), and the lifting column (202) can move up and down and be locked on the base (201).

6. The spliced anti-collapse shed frame for civil air defense project according to claim 5, characterized in that: Multiple groups of first fixing holes (204) are provided in the height direction of the base (201), and second fixing holes (205) are provided on the lifting column (202). The lifting column (202) and the base (201) are locked and connected by a locking bolt passing through the first fixing holes (204) and the second fixing holes (205).

7. A spliced anti-collapse shed frame for civil air defense projects according to claim 1, characterized in that: The longitudinal beam (4) is a splicing structure. In the length direction of the ramp (1), adjacent longitudinal beams (4) are fixedly connected by a connecting device (8). The connecting device (8) includes a first sleeve (81) and a second sleeve (82). The first sleeve (81) and the second sleeve (82) are hinged, and a locking and limiting mechanism for restricting their relative rotation is provided between the first sleeve (81) and the second sleeve (82).

8. The spliced anti-collapse shed frame for civil air defense project according to claim 6, characterized in that: One end of the first sleeve (81) and the second sleeve (82) close to each other is provided with a connecting hinge (83), and connecting shafts (84) are respectively arranged on the first sleeve (81) and the second sleeve (82). Adjacent two connecting shafts (84) are fixed by a connecting plate (85). One end of the connecting plate (85) is provided with a positioning hole (86), and an oblong hole (87) is arranged on the other side of the connecting plate (85). One side of the connecting plate (85) is sleeved on the connecting shaft (84) of the first sleeve (81) through the positioning hole, and the other end is sleeved on the connecting shaft (84) of the second sleeve (82) through the oblong hole (87). Threads are arranged on the outer periphery of the connecting shaft (84), and the connecting plate (85) is fixedly locked with the first sleeve (81) and the second sleeve (82) by tightening with nuts on the threads of the connecting shaft (84), so as to restrict the rotation of the first sleeve (81) and the second sleeve (82).

9. The spliced anti-collapse shed frame for civil air defense project according to claim 1, characterized in that: The fixing sleeve (5) and the cross beam (3) are locked tightly by bolts and nuts.

10. A spliced anti-collapse shed frame for civil air defense projects according to claim 1, characterized in that: Each cross beam (3) is connected to at least two fixing sleeves (5) in the length direction of the cross beam (3).

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