Field mobile and quickly built parking apron

Abstract

This invention discloses a mobile, rapidly deployable helipad for field use, relating to the field of helipad technology. It includes a central rigid chain support device and folding side platforms mounted on both sides of the central rigid chain support device, with zipper structures extending from the edges of adjacent folding side platforms. The central rigid chain support device includes a rectangular storage frame and symmetrically arranged loop storage structures within the rectangular storage frame. Each of the two loop storage structures contains a movable first chain and a second chain. This invention, through the interlocking rigid chains forming a central structure, combined with equally spaced support columns at the bottom, can quickly construct a high-rigidity, high-stability load-bearing system. Simultaneously, while connecting the two folding side platforms, the zipper structures receive vertical support from the central rigid chain support device at their bottom, ensuring the flatness and firmness of the connection points.

Description

Technical Field

[0001] This invention relates to the field of helipad technology, specifically to a mobile helipad that can be quickly erected in the field. Background Technology

[0002] In field environments (such as emergency rescue, military operations, and natural disaster sites), helicopters or drones often need to take off and land temporarily to complete resupply or reconnaissance missions. However, field sites usually lack pre-built hardened helipads, and the ground is mostly soft soil, gravel, grass, or uneven terrain, which poses safety hazards for direct take-off and landing. Therefore, a temporary helipad that can be quickly deployed, is easy to move, and has sufficient load-bearing capacity is needed. In existing technologies, the following solutions are mainly used for temporary airstrips in the field: First, aluminum alloy plates or composite material splicing plates are laid out, and multiple plates are spliced ​​together by manual labor or small machinery to form the take-off and landing area. Although this method has a high degree of modularity, the splicing process relies on a lot of manpower and takes a long time. In addition, there is a lack of reliable locking and vertical support between the plates. Under the dynamic load of helicopter take-off and landing, misalignment or tilting is likely to occur, affecting the flatness and safety of the platform. Second: an inflatable helipad is used, which is quickly inflated by an air pump. However, the inflatable structure is sensitive to sharp objects and is easily punctured by gravel or foreign objects. Moreover, its flexible surface deforms greatly under heavy load, making it difficult to ensure the stable support of the helicopter landing gear. Thirdly, precast concrete or steel structure modules are used for hoisting and assembly using heavy equipment such as cranes. This method places high demands on transportation vehicles and hoisting equipment, and cannot be quickly implemented in field conditions where roads are impassable or equipment is limited. In addition, most existing foldable helipads use a side-wing hinged deployment method, but the connection between the side wings and the central platform usually relies on independent bolts, pins or locks, which need to be tightened manually one by one, which is not only cumbersome and inefficient. Therefore, there is an urgent need for a mobile helipad that can be quickly erected and has a certain load-bearing capacity. Summary of the Invention

[0003] The purpose of this invention is to provide a mobile helipad that can be quickly assembled in the field. The central structure formed by the interlocking rigid chains, together with the support columns set at equal intervals at the bottom, can quickly build a high-rigidity and high-stability load-bearing system. At the same time, while the zipper structure connects the two folding side platforms, its bottom receives vertical support from the central rigid chain support device, ensuring that the connection part is flat and firm.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a mobile, rapidly deployable helipad for field use, comprising: a central rigid chain support device, and folding side wing platforms mounted on both sides of the central rigid chain support device, with zipper structures extending from the edges of adjacent folding side wing platforms; the central rigid chain support device includes a rectangular storage frame, symmetrically arranged loop storage structures within the rectangular storage frame, and movable first and second chains respectively within the two loop storage structures; the bottom of each of the first and second chains is connected to several equally spaced support column structures, and a sprocket drive mechanism is mounted on the rectangular storage frame, the sprocket drive mechanism being respectively connected to the first and second chains. In the meshing transmission, when the sprocket drive mechanism is running, it drives the first chain and the second chain to converge and mesh with each other at the axial position of the rectangular storage frame to form a rigid chain. Several support column structures follow the movement of the first chain and the second chain and are distributed sequentially to support the bottom of the rigid chain, which is used to quickly build a central support structure. A pin structure is also provided between the zipper structure and the central rigid chain support device, so that the zipper structure follows the central rigid chain support device. When the central rigid chain support device is running, the zipper structure can be sewn to connect the folding side wing platforms on both sides. The central rigid chain support device is placed at the bottom of the zipper structure to provide vertical support for the connection part of the zipper structure and to provide power for the operation of the zipper structure.

[0005] Preferably, the rectangular storage frame includes an outer frame, and a transparent material panel is provided on the top of the outer frame. The two loop storage structures are fixed inside the top of the panel and are arranged symmetrically. Each loop storage structure includes several limiting rings fixedly assembled with the panel. The loop channel formed between the several limiting rings can be used to form a loop storage groove to accommodate the first chain and the second chain.

[0006] Preferably, the first chain and the second chain are formed by hinged metal links with the same structure. Each metal link includes upper and lower chain plates, with chain posts vertically connected to the ends of the two chain plates, and chain grooves opened on both sides of the chain plates.

[0007] Preferably, the sprocket drive mechanism includes two sets of rotatable sprocket bodies, each set of sprocket bodies can be placed in a circular groove opened on the corner of the limiting ring and mesh with the first chain and the second chain at the corresponding position for transmission, and a drive box set on the panel, wherein the drive box is provided with a gear meshing drive assembly, and the two output shaft ends of the gear meshing drive assembly are respectively connected to the two drive boxes at the bottom.

[0008] Preferably, each set of the support column structure includes a support vertical rod fixed to the chain plate, an elastic support rod connected to the bottom of the support vertical rod, and a first omnidirectional wheel located at the bottom of the elastic support rod.

[0009] Preferably, the folding side wing platform includes a central frame and two sets of side frames. The two sets of side frames are respectively placed on both sides of the central frame and connected to the folding platform. Each set of folding platforms includes two support frames. Each support frame is equipped with a support plate. The bottom of the adjacent sides of the two support frames is provided with a plate hinge for opening and closing. The opposite ends of the two support frames are provided with mounting parts that are respectively assembled with the side frames and the central frame. One of the side frames can be assembled with the side wall of the rectangular storage frame.

[0010] Preferably, the zipper structure includes two sets of connecting support parts, the opposite sides of which are connected to the edge of the folding side wing platform, and a first zipper part and a second zipper part disposed on the opposite sides of the two sets of connecting support parts. The first zipper part can engage with the second zipper part. The ends of the first zipper part and the second zipper part are respectively provided with a first end and a second end. The first end and the second end can be adapted to be inserted into each other. The first end and the second end are provided with positioning holes that penetrate the first end and the second end, and locking pins are inserted into the positioning holes. Furthermore, the first zipper part and the second zipper part are also equipped with zipper heads. The pin structure is located at the end of the zipper head and is adapted to the insertion hole opened on the chain plate near the head of the central rigid chain support device.

[0011] Preferably, the supporting vertical rod has a supporting member extending outward from the outer wall near the top of the chain plate, and a locking hole opened on the supporting member. When the supporting column structure is supported below the zipper structure so that the supporting member is placed at the bottom of the connecting support part, the locking hole can be assembled with the connecting support part by bolts.

[0012] Preferably, the lower parts of the central frame and the two sets of side frames are respectively equipped with movable support legs and leveling supports; the movable support legs are in two sets, each set of movable support legs includes a hydraulic telescopic rod, a fixing block is fixed on the hydraulic telescopic rod, and a second universal wheel is connected to the bottom of the fixing block; the leveling supports are in two sets, each set of leveling supports includes a mounting base, an interconnected arc-shaped transmission groove arranged in a "U" shape opened in the mounting base, two long straight grooves, a number of transmission rollers are arranged in the arc-shaped transmission groove, and a telescopically movable support column is respectively arranged in the two long straight grooves. The inner end of the support column can abut against the transmission roller, and its outer end extends to the outside of the mounting base and is provided with a base, and a limiting step groove is opened on the support column and placed in the area of ​​the long straight groove. The mounting base is provided with two limiting bolts, and the two limiting bolts extend into the long straight groove and are used to limit the step groove.

[0013] Preferably, the central rigid chain support device extends a certain distance towards the end relative to the zipper structure, and can be used to assemble the upper and lower escalators.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a central structure formed by interlocking rigid chains, combined with equally spaced support columns at the bottom, to quickly construct a high-rigidity, high-stability load-bearing system. Simultaneously, the zipper structure, while connecting the two folding side platforms, receives vertical support from the central rigid chain support device at its bottom, ensuring a flat and secure connection. The central rigid chain support device employs a rectangular storage frame and a loop-type storage structure design. When not in use, the first chain, second chain, and support columns can be stored within the storage frame, forming a compact storage configuration with the folding side platforms, facilitating portable relocation in the field. This invention achieves significant improvements in setup speed, ease of operation, portability, and environmental adaptability, making it particularly suitable for scenarios such as temporary take-off and landing in the field, emergency rescue, and frontline resupply. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of the central rigid chain support device and the two folding side wing platforms of the present invention; Figure 2 for Figure 1 A second-view 3D structural diagram; Figure 3 for Figure 1 A schematic diagram of the third-person perspective stereoscopic structure; Figure 4 This is a three-dimensional structural diagram of the central rigid chain support device of the present invention; Figure 5 This is a partially enlarged structural schematic diagram of the central rigid chain support device of the present invention; Figure 6 for Figure 4 A magnified structural diagram at point A; Figure 7 for Figure 4 A magnified structural diagram at point B; Figure 8 for Figure 5 A magnified structural diagram at point C; Figure 9 This is a schematic diagram of the disassembly and assembly structure of the central rigid chain support device and the two folding side wing platforms of the present invention. Figure 10 This is a schematic diagram of the folding side wing platform structure of the present invention; Figure 11 for Figure 10 A second-view 3D structural diagram; Figure 12 This is a top view of the assembly of the multiple folding side wing platforms of the present invention; Figure 13 This is a partially enlarged structural diagram of the movable support leg and leveling support of the present invention; Figure 14 for Figure 13A schematic diagram of a partial cross-sectional structure of the leveling support; Figure 15 This is a partially enlarged schematic diagram of the support column structure of the present invention; Figure 16 This is a schematic diagram of the assembly relationship between the first end and the second end of the present invention; Figure 17 This is a partially enlarged structural diagram of the central rigid chain support device of the present invention, showing its assembly position on the escalator.

[0016] In the diagram: 111, outer frame; 11, panel; 113, limiting ring; 1131, loop storage groove; 1132, circular groove; 114, elastic support rod; 115, support rod; 1151, support component; 1152, locking hole; 117, first universal wheel; 118, first chain; 119, second chain; 120, drive box; 121, sprocket body; 130, zipper head; 131, pin structure; 1111, chain plate; 1112, chain post; 1113, chain groove; 211. Connecting support part; 212. First zipper part; 213. Second zipper part; 214. First end; 215. Second end; 216. Locking pin; 311. Side frame; 312. Support frame; 313. Mounting component; 314. Support platform; 315. Center frame; 316. Plate hinge; 411. Fixing block; 412. Hydraulic telescopic rod; 413. Second swivel wheel; 511. Mounting base; 512. Arc-shaped transmission groove; 5121. Long straight groove; 513. Transmission roller; 514. Support column; 515. Base; 516. Limiting step groove; 517. Limiting bolt. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0018] Example 1 Please see Figures 1 to 17The present invention preferably provides a technical solution: a mobile, rapidly deployable helipad for field use, comprising: a central rigid chain support device, and folding side wing platforms mounted on both sides of the central rigid chain support device, with zipper structures extending from the edges of adjacent folding side wing platforms; the central rigid chain support device includes a rectangular storage frame, symmetrically arranged loop storage structures within the rectangular storage frame, and movable first chains 118 and second chains 119 respectively within the two loop storage structures; the bottoms of the first chains 118 and second chains 119 are each connected to several equally spaced support column structures, and a sprocket drive mechanism mounted on the rectangular storage frame, the sprocket drive mechanism being capable of engaging with the first chains 118 and second chains 119 respectively. In the transmission system, when the sprocket drive mechanism is running, it drives the first chain 118 and the second chain 119 to converge and mesh with each other at the axial position of the rectangular storage frame to form a rigid chain. Several support column structures follow the movement of the first chain 118 and the second chain 119 and are distributed and supported at the bottom of the rigid chain to quickly build a central support structure. A pin structure 131 is also provided between the zipper structure and the central rigid chain support device to allow the zipper structure to follow the central rigid chain support device. When the central rigid chain support device is running, the zipper structure can stitch together the folding side wing platforms on both sides. The central rigid chain support device, located at the bottom of the zipper structure, can provide vertical support for the connection part of the zipper structure and provide power for the operation of the zipper structure.

[0019] In this application, such as Figure 4 As shown, through the meshing transmission between the sprocket drive mechanism in the central rigid chain support device and the first chain 118 and the second chain 119, the rigid chains on both sides can be quickly driven to converge towards the central axis and intersect to form a rigid support structure. Simultaneously, the support column structures are distributed sequentially and provide stable support, enabling the rapid construction of the central support structure for the helipad. Compared to traditional construction methods, this significantly shortens deployment time and meets the urgent needs for temporary take-off and landing sites in emergency, rescue, and military scenarios. The central structure formed by the interlocking rigid chains, combined with the support columns set at equal intervals at the bottom, can quickly build a high-rigidity and high-stability load-bearing system. While the zipper structure connects the two folding side platforms, its bottom receives vertical support from the central rigid chain support device, ensuring the flatness and firmness of the connection parts and improving the overall platform's impact resistance and deformation resistance. Furthermore, the zipper structure and the central rigid chain support device are linked through the pin structure 131. When the central device is running, the zipper structure automatically stitches and connects the two folding side wing platforms without the need for additional manual intervention or independent power source. Secondly, the central rigid chain support device adopts a rectangular storage frame and loop storage structure design. The first chain 118, the second chain 119 and the support column can be stored in the storage frame when not in use. Together with the folding side wing platform, the whole structure forms a compact storage form, which is convenient for portable transfer in the field. In summary, this invention has made significant progress in terms of setup speed, ease of operation, portability and mobility, and environmental adaptability, and is particularly suitable for scenarios such as temporary take-off and landing in the field, emergency rescue, and frontline supply.

[0020] Furthermore, the rectangular storage frame includes an outer frame 111, and a transparent material panel 11 is provided on the top of the outer frame 111. Two loop storage structures are fixed inside the top of the panel 11 and are arranged symmetrically. Each loop storage structure includes several limiting rings 113 fixedly assembled with the panel 11. The loop channel formed between the several limiting rings 113 can be used to form a loop storage groove 1131 for accommodating the first chain 118 and the second chain 119.

[0021] The provided rectangular storage box structure, such as Figure 4 , 5 As shown in Figure 12, the top of the rectangular storage frame is made of a transparent material panel 11. Operators can directly observe the movement status of the first chain 118 and the second chain 119 in the loop storage structure, the chain link meshing status and the distribution of the support columns from the outside. Without disassembling the equipment, it is possible to quickly determine whether the rigid chain is properly deployed or retracted, which reduces the difficulty of troubleshooting in the field and facilitates daily maintenance and emergency troubleshooting. Secondly, such as Figure 5 As shown, a dedicated loop storage groove 1131 is constructed by symmetrically fixing several limiting rings 113 at the top of the panel 11, allowing the first chain 118 and the second chain 119 to be folded and stored along a fixed path. This design ensures that the chains are arranged in an orderly manner and do not get tangled when stored, and also provides precise guidance when unfolding, avoiding chain deviation and jamming, thus improving the reliability of unfolding and retrieval.

[0022] Furthermore, the first chain 118 and the second chain 119 are formed by hinged metal links with the same structure. Each metal link includes two sets of chain plates 1111, with chain posts 1112 vertically connected to the ends of the two sets of chain plates 1111, and chain grooves 1113 opened on both sides of the chain plates 1111.

[0023] like Figure 5 , 6As shown in Figures 7 and 8, the first chain 118 and the second chain 119 are hinged together by multiple metal links. Each link includes two sets of chain plates 1111 at the top and bottom, a chain post 1112 vertically connected at the end, and chain grooves 1113 on both sides. The double-layer structure significantly improves the bending section modulus of the chain links, giving the rigid chain higher bending stiffness after interlocking to form support. The vertically connected chain post 1112 enhances the hinge strength between the chain links. The chain grooves 1113 on both sides facilitate stable engagement with the sprocket body 121 of the sprocket drive mechanism, preventing tooth slippage or derailment, and ensuring that the rigid chain remains stable under heavy-load take-off and landing conditions.

[0024] Furthermore, the sprocket drive mechanism includes two sets of rotatable sprocket bodies 121. Each set of sprocket bodies 121 can be placed in a circular groove 1132 opened on the corner of the limiting ring 113 and mesh with the first chain 118 and the second chain 119 at the corresponding positions for transmission. It also includes a drive box 120 set on the panel 11. The drive box 120 is provided with a gear meshing drive assembly. The two output shaft ends of the gear meshing drive assembly are respectively connected to the two drive boxes 120 at the bottom.

[0025] The sprocket drive mechanism installs two sets of rotatable sprocket bodies 121 in the circular grooves 1132 at the corners of the limiting ring 113, so that the sprocket bodies 121 can maintain precise engagement with the first chain 118 and the second chain 119 at the corners of the loop channel. This corner arrangement saves internal space of the storage frame and utilizes the corner area to achieve a natural change in the transmission direction, reducing the frictional resistance of the chain at the bend, improving transmission efficiency and reducing wear. Secondly, the drive box 120 on the panel 11 has a built-in gear meshing drive assembly. The gear meshing drive assembly is a mature existing technology and can be composed of a drive motor and two meshing gear sets. Its two output shaft ends are respectively connected to the two drive boxes 120 at the bottom, thereby driving the two sets of sprocket bodies 121 to rotate synchronously. This ensures that the first chain 118 and the second chain 119, which are symmetrically arranged on the left and right, have the same speed and consistent stroke when unfolding or retracting, so that the rigid chains are accurately interlocked at the central axis.

[0026] Furthermore, each set of support column structures includes a support vertical rod 115 fixed to the chain plate 1111, an elastic support rod 114 connected to the bottom of the support vertical rod 115, and a first universal wheel 117 located at the bottom of the elastic support rod 114.

[0027] like Figure 4 , 9 As shown, each set of support column structures is fixedly connected to the chain plate 1111 of the metal chain link via the support vertical rod 115, so that the vertical load on the rigid chain is directly transmitted to the elastic support rod 114 via the support vertical rod 115, and then acts on the ground through the first universal wheel 117. The first universal wheel 117 set at the bottom of the support column facilitates the rapid deployment of the first chain 118 and the second chain 119. At the same time, the elastic support rod 114, as an intermediate connecting column, allows for a certain degree of minor adjustment or buffering, so that each support column can maintain a good grounding state on uneven ground, ensuring the levelness and stability of the apron platform, and can also reduce the impact load generated by the take-off and landing of the aircraft to a certain extent. Preferably, the support column structure and the chain link are detachably connected through the support vertical rod 115. When a support column is worn or deformed due to long-term use, the support column group can be replaced individually without disassembling the entire rigid chain. Furthermore, the split design of the support vertical rod 115, the elastic support rod 114, and the first universal wheel 117 also makes it easy to select different specifications of support vertical rod 115 according to different field ground conditions.

[0028] In summary, as Figure 4 As shown, when the first chain 118 and the second chain 119 move within the loop storage structure, the support columns can move along the loop path with the chain links, and automatically distribute themselves to the bottom of the chain links to form support when the rigid chain unfolds and extends, and automatically rise and enter the storage frame when retracted.

[0029] Example 2 In another embodiment of the present invention, the folding side wing platform includes a central frame 315 and two sets of side frames 311. The two sets of side frames 311 are respectively placed on both sides of the central frame 315 and connected to the folding platform. Each set of folding platforms includes two support frames 312. Each of the two support frames 312 is equipped with a support plate 314. The bottom of the adjacent sides of the two support frames 312 is provided with a plate hinge 316 for opening and closing. The opposite ends of the two support frames 312 are provided with mounting parts 313 that are respectively assembled with the side frames 311 and the central frame 315. The end of one set of side frames 311 can be assembled with the side wall of the rectangular storage frame.

[0030] Based on Example 1, a folding side wing platform was further provided, such as... Figure 10 , 11 As shown, it is centered on the central frame 315, with side frames 311 set on both sides and connected to a folding platform composed of two support frames 312. The support frames 312 can be opened and closed in opposite directions through the bottom plate hinge 316, so that the platform plates on both sides can be folded upward and towards the middle when not in use, significantly reducing the overall width and space occupied. like Figure 1 , 2As shown in Figure 3, the central frame 315, side frame 311, support frame 312, and mounting components 313 constitute an independent folding platform module, which can be configured on one or both sides of the rectangular storage frame as needed. After the folding side wing platform is unfolded, its bottom can be supported by the support column structure extending from the central rigid chain support device and its own bottom support leg. At the same time, the aforementioned zipper structure is sewn to connect the two folding platforms under the drive of the central rigid chain support device. After assembly, the end of the side frame 311 where the folding platform is located can be further fixed and locked to the side wall of the rectangular storage frame by bolts.

[0031] Example 3 In another embodiment of the present invention, the zipper structure includes two sets of connecting support portions 211, the opposite sides of which are connected to the edge of the folding side wing platform, and a first zipper portion 212 and a second zipper portion 213 disposed on opposite sides of the two sets of connecting support portions 211. The first zipper portion 212 can engage with the second zipper portion 213. The ends of the first zipper portion 212 and the second zipper portion 213 are respectively provided with a first end 214 and a second end 215. The first end 214 can be adapted to be inserted into the second end 215, and a positioning hole is provided through the first end 214 and the second end 215, and a locking pin 216 is inserted into the positioning hole. Furthermore, a zipper head 130 is also engaged on the first zipper portion 212 and the second zipper portion 213. The pin structure 131 is placed at the end of the zipper head 130 and is adapted to the insertion hole opened on the chain plate 1111 near the head of the central rigid chain support device.

[0032] In this embodiment, a zipper structure is further provided, such as... Figure 1 , 4 As shown in Figures 6, 7, and 16, two sets of connecting support parts 211 are respectively connected to the edge of the folding side wing platform. The first zipper part 212 and the second zipper part 213 are set on the opposite surface to form an engagement structure. When the central rigid chain support device drives the zipper head 130 to move, it drives the first zipper part 212 and the second zipper part 213 to gradually engage and sew along the length direction. Compared with the traditional bolt or pin connection method, the splicing and disassembly time of the two side platforms is greatly shortened, which meets the needs of rapid construction and evacuation in the field. like Figure 7 , 16 As shown, a first end 214 and a second end 215 are respectively provided at the ends of the first zipper section 212 and the second zipper section 213. The two can be fitted together to achieve precise alignment of the starting end of the engagement. After the two are fitted together, a locking pin 216 is inserted through the positioning hole through both to lock them, effectively preventing the ends of the zipper from coming off or becoming misaligned during the stress process. Secondly, such as Figure 6As shown, the zipper head 130 on the zipper structure is fitted with an insertion hole on the chain plate 1111 near the head of the central rigid chain support device via a pin structure 131 at the end. When the central rigid chain extends, the chain plate 1111 drives the zipper head 130 to move synchronously via the pin structure 131, thereby driving the first zipper part 212 and the second zipper part 213 to automatically complete the meshing and sewing. The central rigid chain support device is located directly below it. When the rigid chain is fully extended, the top of the rigid chain can directly support the meshing part of the zipper structure, providing continuous and uniform vertical support force to the connection area, reducing local deflection or deformation caused by insufficient rigidity at the joint, and ensuring the overall flatness and impact resistance of the helipad.

[0033] Example 4 In another embodiment of the present invention, the outer wall of the support rod 115 near the top of the chain plate 1111 extends outward to form a support member 1151, and a locking hole 1152 is formed on the support member 1151. When the support column structure is supported below the zipper structure such that the support member 1151 is placed at the bottom of the connecting support part 211, the locking hole 1152 can be assembled with the connecting support part 211 by bolts.

[0034] Based on the support column structure of Example 1, such as Figure 15 , 17 As shown, a support member 1151 is formed by extending outward from the outer wall of the support column 115 near the top of the chain plate 1111, and a locking hole 1152 is opened on the support member 1151. When the support column is located below the zipper structure, the support member 1151 is exactly placed at the bottom of the connecting support part 211. The locking hole 1152 can be fastened to the connecting support part 211 by bolts. This allows the support column to provide vertical support force while forming a mechanical fixed connection with the zipper structure, connecting the rigid chain, the support column structure and the zipper component at the edge of the folding side wing platform into one unit, which significantly improves the overall resistance to lateral displacement and structural rigidity of the helipad. Specifically, by fixing the support member 1151 to the connecting support part 211 with bolts, the vertical and horizontal displacement of the zipper structure relative to the support column can be effectively constrained, ensuring that the zipper always maintains close contact with the support column, avoiding unevenness or partial suspension of the platform due to gaps, and ensuring safe take-off and landing. Secondly, the support member 1151 extends from the outer wall of the support vertical rod 115, and its position naturally corresponds to the bottom of the connecting support part 211 of the zipper structure. When the support column extends to the predetermined position with the rigid chain, the support member 1151 automatically enters under the connecting support part 211. The operator can easily align the hole and tighten the bolt through the locking hole 1152, reducing manual adjustment time and further improving the efficiency of rapid field construction. In summary, by using the extension structure on the support column and the bottom of the zipper structure to achieve bolt fastening, the vertical support and horizontal connection functions are organically combined, which enhances the overall rigidity and anti-disturbance capability of the helipad and provides a more reliable technical guarantee for safe and rapid take-off and landing in complex field environments.

[0035] Example 5 In another embodiment of the present invention, the lower parts of the central frame 315 and the two sets of side frames 311 are respectively equipped with movable support legs and leveling supports; there are two sets of movable support legs, each set of movable support legs includes a hydraulic telescopic rod 412, a fixing block 411 is fixed on the hydraulic telescopic rod 412, and a second universal wheel 413 is connected to the bottom of the fixing block 411; there are two sets of leveling supports, each set of leveling supports includes a mounting base 511, an interconnected arc-shaped transmission groove 512 arranged in a "U" shape and two long straight grooves 5121, the arc-shaped transmission groove 512 is opened in the mounting base 511, and the arc-shaped transmission groove 512 is connected in a "U" shape. The moving groove 512 is provided with a number of transmission rollers 513 and a telescopically movable support column 514 respectively provided in two long straight grooves 5121. The inner end of the support column 514 can abut against the transmission rollers 513, and its outer end extends to the outside of the mounting base 511 and is provided with a base 515. A limiting step groove 516 is opened on the support column 514 and placed in the area of ​​the long straight groove 5121. Two limiting bolts 517 are provided on the mounting base 511. The two limiting bolts 517 extend into the long straight groove 5121 and are used to limit the step groove 516.

[0036] By further installing movable outriggers and leveling supports under the folding side wing platform, firstly, before assembly, the movable outriggers are in contact with the ground and the leveling supports are suspended in the air. When the helipad is in a retracted or semi-expanded state, the support platform 314 can be quickly unfolded by pushing or dragging the entire movable outriggers. Secondly, the zipper structure is used to sew together the adjacent two sets of folding side wing platforms. The slight movement of the movable outriggers makes the connection between the two more tight. After the assembly is completed, all the fixed blocks 411 are driven to retract synchronously, so that the leveling supports touch the ground. like Figure 13 and 14 As shown, the leveling support is also set at the lower part of the center frame 315 and the side frame 311. Each set includes a mounting base 511, which has a U-shaped arc transmission groove 512 and two long straight grooves 5121 inside. The arc transmission groove 512 is equipped with several transmission rollers 513, and the two long straight grooves 5121 are equipped with telescopic and movable support columns 514. Under the action of the transmission rollers 513, the extension length is changed by the transmission support columns 514, thereby quickly compensating for the ground elevation difference and ensuring that the entire helipad remains level on complex terrain in the field, meeting the requirements of platform flatness for helicopter take-off and landing. In summary, the introduction of mobile outriggers and leveling supports enables the rapid construction of helipads in the field, providing both short-distance mobility and terrain adaptability. This significantly reduces manpower requirements and site preparation time, offering a more practical and safer technical solution for emergency rescue, field support, and other scenarios.

[0037] Example 6 In another embodiment of the present invention, the central rigid chain support device extends a distance toward the end relative to the zipper structure, and can be used to assemble upper and lower escalators.

[0038] like Figure 1 , 12 As shown in Figure 17, the structural section extending from the end of the central rigid chain support device, the support member 1151 on the support rod 115, and the locking hole 1152 can be directly assembled with the upper and lower escalators. After the helipad is built, the escalator and the central rigid chain support device share the same foundation load-bearing structure, without the need to set up an independent escalator foundation or occupy the open space around the helipad, making the overall layout more compact, reasonable and convenient.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can also refer to a mechanical connection. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolted connections, etc.

[0040] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A mobile, rapidly deployable helipad for field use, characterized in that: include: A central rigid chain support device, and folding side wing platforms mounted on both sides of the central rigid chain support device, with zipper structures extending from the edges of two adjacent folding side wing platforms. The central rigid chain support device includes a rectangular storage frame, a loop storage structure arranged symmetrically within the rectangular storage frame, and two movable first chains (118) and second chains (119) respectively within the two loop storage structures. The bottom of the first chain (118) and the second chain (119) is connected to several equally spaced support column structures, and a sprocket drive mechanism is provided on the rectangular storage frame. The sprocket drive mechanism can mesh and drive the first chain (118) and the second chain (119) respectively. When the sprocket drive mechanism is running, it drives the first chain (118) and the second chain (119) to converge and mesh and interlock to form a rigid chain at the axial position of the rectangular storage frame. Several support column structures follow the movement of the first chain (118) and the second chain (119) and are distributed sequentially and supported at the bottom of the rigid chain for quick assembly to form a central support structure. A pin structure (131) is also provided between the zipper structure and the central rigid chain support device for the zipper structure to follow the central rigid chain support device. When the central rigid chain support device is running, the zipper structure can be sewn to connect the folding side wing platforms on both sides. The central rigid chain support device is placed at the bottom of the zipper structure to provide vertical support for the connection part of the zipper structure and to provide power for the operation of the zipper structure. The zipper structure includes two sets of connecting support parts (211), the opposite sides of the two sets of connecting support parts (211) are respectively connected to the edge of the folding side wing platform, and a first zipper part (212) and a second zipper part (213) are provided on the opposite sides of the two sets of connecting support parts (211). The first zipper part (212) can be engaged with the second zipper part (213). The ends of the first zipper part (212) and the second zipper part (213) are respectively provided with a first end (214) and a second end (215). The first end (214) can be adapted to be inserted into the second end (215), and a positioning hole is passed through the first end (214) and the second end (215), and a locking pin (216) is inserted into the positioning hole. Furthermore, the first zipper section (212) and the second zipper section (213) are also fitted with zipper heads (130), and the pin structure (131) is placed at the end of the zipper head (130) and is adapted to the insertion hole opened on the chain plate (1111) near the head of the central rigid chain support device.

2. The mobile, rapidly deployable helipad for field use as described in claim 1, characterized in that: The rectangular storage frame includes an outer frame (111), and a transparent material panel (11) is provided on the top of the outer frame (111). Two loop storage structures are fixed inside the top of the panel (11) and are arranged symmetrically. Each loop storage structure includes several limiting rings (113) fixedly assembled with the panel (11). The loop channel formed between the several limiting rings (113) can be used to form a loop storage groove (1131) for accommodating the first chain (118) and the second chain (119).

3. The mobile, rapidly deployable helipad for field use as described in claim 1, characterized in that: The first chain (118) and the second chain (119) are made of several metal chain links with the same structure and are hinged together. Each metal chain link includes two sets of chain plates (1111) at the top and bottom. The ends of the two sets of chain plates (1111) are vertically connected with chain posts (1112) and chain grooves (1113) on both sides of the chain plates (1111).

4. The mobile, rapidly deployable helipad for field use as described in claim 1, characterized in that: The sprocket drive mechanism includes two sets of rotatable sprocket bodies (121). Each set of sprocket bodies (121) can be placed in a circular groove (1132) opened on the corner of the limiting ring (113) and mesh with the first chain (118) and the second chain (119) at the corresponding position for transmission. It also includes a drive box (120) set on the panel (11). The drive box (120) is provided with a gear meshing drive assembly. The two output shaft ends of the gear meshing drive assembly are respectively connected to the two drive boxes (120) at the bottom.

5. The mobile, rapidly deployable helipad for field use as described in claim 1, characterized in that: Each set of the support column structure includes a support vertical rod (115) fixed to the chain plate (1111), the bottom of the support vertical rod (115) is connected to an elastic support rod (114), and a first universal wheel (117) is provided at the bottom of the elastic support rod (114).

6. The mobile, rapidly deployable helipad for field use as described in claim 1, characterized in that: The folding side platform includes a central frame (315) and two sets of side frames (311). The two sets of side frames (311) are respectively placed on both sides of the central frame (315) and connected to the folding platform. Each set of folding platforms includes two support frames (312). Support plates (314) are mounted on both support frames (312). The bottom of the adjacent sides of the two support frames (312) is provided with plate hinges (316) for opening and closing. The opposite ends of the two support frames (312) are provided with mounting parts (313) that are respectively assembled with the side frames (311) and the central frame (315). The end of one set of side frames (311) can be assembled with the side wall of the rectangular storage frame.

7. The mobile, rapidly deployable helipad for field use as described in claim 5, characterized in that: The support column (115) extends outward from the outer wall near the top of the chain plate (1111) with a support member (1151) and a locking hole (1152) opened on the support member (1151). When the support column structure is supported under the zipper structure so that the support member (1151) is placed at the bottom of the connecting support part (211), the locking hole (1152) is assembled with the connecting support part (211) by bolts.

8. The mobile, rapidly deployable helipad for field use according to claim 6, characterized in that: The lower parts of the central frame (315) and the two sets of side frames (311) are respectively equipped with movable support legs and leveling supports; The movable outriggers are in two sets, each set of movable outriggers includes a hydraulic telescopic rod (412), a fixing block (411) is fixed on the hydraulic telescopic rod (412), and a second universal wheel (413) is connected to the bottom of the fixing block (411). The leveling support consists of two sets. Each set of leveling supports includes a mounting base (511), an interconnected arc-shaped transmission groove (512) and two long straight grooves (5121) formed in the mounting base (511), a plurality of transmission rollers (513) provided in the arc-shaped transmission groove (512), and a telescopically movable support column (514) respectively provided in the two long straight grooves (5121). The inner end of the support column (514) can abut against the transmission rollers (513), and its outer end extends to the outside of the mounting base (511) and is provided with a base (515). A limiting step groove (516) is formed on the support column (514) and placed in the area of ​​the long straight groove (5121). Two limiting bolts (517) are provided on the mounting base (511). The two limiting bolts (517) extend into the long straight groove (5121) respectively and are used to limit the step groove (516).

9. The mobile, rapidly deployable helipad for field use according to claim 1, characterized in that: The central rigid chain support device extends a certain distance towards the end relative to the zipper structure for assembling the upper and lower escalators.

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