阅读说明：本技术 金属结构停机坪 (Metal structure parking apron ) 是由 张永健 刘卫东 侯博 薛雷 王凤谦 付伟杰 苏矿源 于 2020-07-28 设计创作，主要内容包括：本申请涉及一种金属结构停机坪,包括用于支撑的支撑座、用于停放直升机的甲板、设置于甲板周围的防护网和登台装置,建筑屋顶层设置有凸起建筑,金属结构停机坪利用建筑物顶层的凸起建筑作为支撑,支撑座设置于凸起建筑的周围,甲板设置于凸起建筑和支撑座上面。本申请利用建筑物顶层的凸起建筑作为支撑,甲板中部得到面支撑,减少了甲板受到的支撑力的压强,还减少了支撑座的点支撑,既减少了成本,又提高了停机坪的稳定性。本申请具有强度高、自重轻、抗变形能力强、工期短、成本较低和满足全天候飞行作业的效果。(The utility model relates to a metal structure air park, including the supporting seat that is used for supporting, the deck that is used for parking the helicopter, set up protection network and the device of stepping on a platform around the deck, the building roof layer is provided with protruding building, and metal structure air park utilizes the protruding building on building roof layer as supporting, and the supporting seat sets up around protruding building, and the deck sets up above protruding building and supporting seat. This application utilizes the protruding building on building top layer as supporting, and the deck middle part obtains the face to support, has reduced the pressure of the holding power that the deck received, has still reduced the point of supporting seat and has supported, has both reduced the cost, has improved the stability of air park again. The method has the advantages of high strength, light dead weight, strong deformation resistance, short construction period, lower cost and capability of meeting all-weather flight operation.)

1. The utility model provides a metal structure air park, is including supporting seat (1) that are used for supporting, aluminum alloy deck (2) that are used for parking the helicopter, sets up protection network (3) and the device of stepping on a platform around deck (2), and wherein deck (2) set up above supporting seat (1), its characterized in that: the building roof layer is provided with a raised building (10), the metal structure parking apron utilizes the raised building (10) on the building roof layer as a support, the supporting seat (1) is arranged around the raised building (10), and the deck (2) is arranged on the raised building (10) and the supporting seat (1).

2. The metal structure tarmac of claim 1 wherein: and a damping layer (14) is arranged between the raised building (10) and the deck (2).

3. The metal structure tarmac of claim 1 wherein: the deck (2) is provided with a flow guide through hole.

4. The metal structure tarmac of claim 1 wherein: deck (2) are two-layer, and deck (2) include upper deck (21) and lower deck (22), and upper deck (21) support in lower deck (22) upper end, and upper deck (21) are individual layer aluminum alloy plate, and upper deck (21) lower extreme is provided with support rib (211), and lower deck (22) are double-deck aluminum alloy plate, and are provided with floor (221) in lower deck (22).

5. The metal structure tarmac of claim 4 wherein: deck (2) are the mosaic structure of split, just but upper deck (21) and lower deck (22) are detachable structure, and upper deck (21) are provided with upper joint seat (212) and upper joint head (213) of mutually supporting joint, and adjacent upper deck (21) are connected through upper joint seat (212) and upper joint head (213) joint each other, and lower deck 21 is provided with lower floor joint seat (222) and lower floor joint head (223) of mutually supporting joint, and adjacent lower deck (22) are connected through lower floor joint seat (222) and lower floor joint head (223) joint each other.

6. The metal structure tarmac of claim 5 wherein: the upper-layer clamping seat (212) consists of an upper-layer limiting plate (2121) and an upper-layer arc seat (2122), wherein the aluminum alloy plate is bent downwards, the upper-layer arc seat (2122) is bent downwards to a lower-layer deck (22) to support the clamping position of the upper-layer deck (21), the lower end of the upper-layer clamping joint (213) is an arc-shaped surface matched with the arc seat of the upper-layer clamping seat (212), and the upper end of the upper-layer clamping joint (213) protrudes upwards to form a hook-shaped structure to be clamped in a cavity formed by the upper-layer limiting plate (2121) and the upper-layer arc seat (2122) of the upper-layer clamping seat (212); the lower clamping seat (222) is similar to the upper clamping seat (212) in shape, the lower clamping seat (222) is composed of a lower limiting plate (2221) with an aluminum alloy plate bent downwards and a lower arc-shaped seat (2222) below, the lower clamping joint (223) is consistent with the upper clamping joint (213) in shape and clamped in a cavity formed by the limiting plate and the arc-shaped seat of the lower clamping seat (222).

7. The metal structure tarmac of claim 1 wherein: the protective net (3) is of a liftable structure.

8. The metal structure tarmac of claim 7 wherein: the climbing device is a stair (4), the stair (4) comprises handrails (41) and liftable handrails (42), when the liftable handrails (42) rise, the upper ends of the liftable handrails are flush with the upper ends of the protective nets (3), and the heights of the upper ends of the liftable handrails (42) are lower than the heights of the decks (2).

9. The metal structure tarmac of claim 1 wherein: the deck (2) further comprises a snow melting system for melting snow accumulated on the deck.

10. The metal structure tarmac of claim 1 wherein: the deck (2) is further embedded with an airplane fixing device (25), the airplane fixing device (25) comprises an opening and closing cover (251) and a rope (252) matched with a turnbuckle (253), and the fixed end of the rope (252) penetrates through the deck (2) to be fixedly connected with the top surface of the raised building (10).

Technical Field

The application relates to the field of helicopter parking aprons, in particular to a metal structure parking apron.

Background

The application of the helicopter is more and more extensive and popular at present, and the helicopter has penetrated into various fields of human life, and the application of the helicopter covers various fields of application, including general use, police use, marine oil, public affairs, medical service, passenger transport, VIP market and the like.

With the wider application of helicopters, the position of helicopters in national economy and national defense construction is increasing day by day. In order to exert the maneuverability of a helicopter, a standard helicopter landing pad needs to be installed, the helicopter landing pad is mostly installed in residential districts, business buildings, central hospitals, fire buildings and other places in densely populated cities, and when wheels or skids touch the surface body of the helicopter landing, the roof-type landing pad generates impact force and gravitational acceleration far larger than the self weight of the helicopter body and the bearing weight at the moment, and the impact of the force has high requirements on the structural design of the landing pad.

The helicopter apron at the present stage is mainly constructed by reinforced concrete and steel-aluminum alloy profiles, wherein the reinforced concrete has excellent fireproof, safe and corrosion-resistant properties in use performance, the reinforced concrete helicopter apron has lower engineering cost and the defects of poor shock resistance and easy cracking after long use time; the steel-aluminum alloy section structure has the advantages of good ductility, light weight, good earthquake-resistant grade characteristic, short foundation construction period, weak corrosion resistance, high cost and more than twice of the cost of reinforced concrete.

Disclosure of Invention

In order to make construction convenience, reduce construction cost, this application provides a metallic structure air park.

The application provides a metallic structure air park adopts following technical scheme:

the utility model provides a metal structure air park, is including the supporting seat that is used for supporting, the deck that is used for parking the helicopter, sets up protection network and the device of stepping on a stage around the deck, and building roof layer is provided with protruding building, and metal structure air park utilizes the protruding building on building roof layer as supporting, and the supporting seat sets up around protruding building, and the deck sets up above protruding building and supporting seat.

By adopting the technical scheme, the building roof layer is generally provided with the raised buildings used as staircases or storage rooms, the raised buildings do not need to be newly built, the raised buildings on the top layer of the building are used as supports, the middle part of the deck is supported by a surface, the pressure of supporting force borne by the deck is reduced, point support of the supporting seat is also reduced, the cost is reduced, and the stability of the parking apron is improved; the deck is made of aluminum alloy materials, has light dead weight and high load capacity, and can resist high temperature and corrosion.

Preferably, a shock absorbing layer is arranged between the raised building and the deck.

By adopting the technical scheme, the shock-absorbing layer can reduce the vibration generated by the deck when the helicopter rises and falls, reduce the metal fatigue of the deck, prolong the service life of the apron, reduce the influence of the vibration of the apron on a building and enable the apron to be more stable.

Preferably, the deck is provided with a flow guide through hole.

Through adopting above-mentioned technical scheme, the water conservancy diversion through-hole both can reduce the ponding on the deck more fast, and the impact air current that produces the deck when can also effectively absorbing the helicopter and descending reduces the hindrance of deck rebound air current to the helicopter, makes the helicopter can descend safely steadily fast more, can also inhale the sound shock attenuation, reduces the noise of helicopter.

Preferably, the deck is two-layer, and the deck includes upper deck and lower deck, and the upper deck supports in lower deck upper end, and the upper deck is individual layer aluminum alloy plate, and upper deck lower extreme is provided with the support rib, and the lower deck is double-deck aluminum alloy plate, and is provided with the floor in the lower deck.

Through adopting above-mentioned technical scheme, the deck is double-deck setting, can disperse the impact force more evenly, and the upper deck can be through single-deck aluminum alloy version and support rib with the impact force along the horizontal direction dispersion, and the lower deck can be through the floor with the impact force along the vertical direction dispersion, and the setting up of support rib and floor makes the deck support more effectively.

Preferably, the deck sets up to the mosaic structure of removable branch, and upper deck and lower deck be removable branch structure, and the upper deck is provided with upper joint seat and the upper joint head of mutually supporting the joint, and adjacent upper deck passes through upper joint seat and upper joint head mutual joint, and the lower deck is provided with the lower floor joint seat and the lower floor joint head of mutually supporting the joint, and adjacent lower deck passes through lower floor joint seat and lower floor joint head mutual joint.

By adopting the technical scheme, the upper deck and the lower deck can be quickly assembled through the splicing structure, so that the installation speed of the decks is improved, and the installation period of the parking apron is shortened.

Preferably, the upper clamping seat consists of an upper limiting plate and an upper arc-shaped seat, the aluminum alloy plate bends downwards, the upper arc-shaped seat is bent downwards to the lower deck to support the clamping part of the upper deck, the lower end of the upper clamping head is an arc-shaped surface matched with the arc-shaped seat of the upper clamping seat, and the upper end of the upper clamping head protrudes upwards to form a hook-shaped structure to be clamped in a cavity formed by the upper limiting plate of the upper clamping seat and the upper arc-shaped seat; the shape of the lower clamping seat is similar to that of the upper clamping seat, the lower clamping seat consists of a lower limiting plate and a lower arc-shaped seat, the lower limiting plate is downwards bent by an aluminum alloy plate, the lower clamping joint is consistent with the upper clamping joint in shape, and the lower clamping joint is clamped in a cavity formed by the limiting plate and the arc-shaped seat of the lower clamping seat.

By adopting the technical scheme, after the unit decks are clamped, a small gap is reserved between the unit upper deck and the unit upper deck, so that the buffer effect is achieved in the horizontal direction; when the airplane takes off and lands, impact force is generated on the deck, the upper deck can disperse the impact force to the periphery along the horizontal direction through the single-layer aluminum alloy plates and the supporting ribs, the lower deck can disperse the impact force along the vertical direction through the rib plates after receiving the force transmitted by the upper deck, and the deck is supported more effectively by the multi-layer uniform impact force.

Preferably, the protective net is a liftable structure.

By adopting the technical scheme, the protective net falls when the helicopter lands, the helicopter is prevented from colliding with the protective net, the safety of the helicopter when the helicopter lands is improved, the protective net rises after the helicopter lands, and the safety of personnel on the parking apron is improved.

Preferably, the landing device is a stair, the stair comprises handrails and liftable handrails, when the liftable handrails are lifted, the upper ends of the liftable handrails are flush with the upper ends of the protective nets, and when the liftable handrails are lowered, the upper ends of the liftable handrails are lower than the deck.

By adopting the technical scheme, the liftable handrails fall when the helicopter lands, and are highly lower than the deck, so that the helicopter is prevented from colliding with the liftable handrails, the safety of the helicopter during landing is improved, the liftable handrails rise after the helicopter lands, the upper end of the liftable handrails is flush with the protective net, the liftable handrails and the protective net surround the whole apron, and the safety of users is improved.

Preferably, the deck further comprises a snow melting system for melting snow deposited on the deck.

Through adopting above-mentioned technical scheme, when snowing weather greatly, snow melt system can melt the snow on the deck, prevents that snow from covering sign and navigation aid lamp on the air park, prevents that snow from skidding when making the helicopter take off and land, keeps the air park deck to be in operating condition all the time, guarantees the take off and land of helicopter when ice and snow weather.

Preferably, an airplane fixing device is further embedded in the deck and comprises an opening and closing cover and a rope matched with a turnbuckle, and the fixed end of the rope penetrates through the deck and is fixedly connected with the top surface of the protruding building.

Through adopting above-mentioned technical scheme, aircraft fixing device can be more effectively with the helicopter fixed parking apron on, the turnbuckle makes aircraft fixing device can adjust the length of rope, can adjust according to the change of helicopter landing position, can also be applicable to the helicopter of different models, the stiff end of rope passes deck and protruding building top surface fixed connection, the reliability of rope has been improved, reduce the influence of rope pulling force to the deck simultaneously, safety and stability when having improved the helicopter and berth.

Drawings

FIG. 1 is a schematic perspective view of a metallic structure apron without a helicopter parked;

FIG. 2 is a schematic perspective view of a metallic structure apron after helicopter landing;

FIG. 3 is a schematic perspective view showing the metal structure of the apron with stairs removed from the bottom;

FIG. 4 is a schematic deck splice of a metal structure tarmac;

FIG. 5 is a schematic perspective view of the upper deck and the lower deck of two adjacent unit decks of the metal-structure apron;

FIG. 6 is a side view of an upper deck and a lower deck of two adjacent unit decks of the metal structure tarmac;

FIG. 7 is a schematic perspective view of a unit protection net of a metal structure apron;

fig. 8 is a side view of the raised unit protection net of the metal structure apron;

fig. 9 is a side view of the unit protection net of the metal structure apron after being lowered;

FIG. 10 is a schematic view of the raised handrail of the metal-structured apron after it has been lowered;

FIG. 11 is a schematic view of a raised armrest of a metal-structured apron;

fig. 12 is a schematic perspective view of the aircraft fastening device of the metal structure apron in use.

Description of reference numerals: 1. a supporting seat; 10. building a bulge; 11. a steel column; 12. a steel beam; 13. a keel; 14. a shock-absorbing layer; 2. a deck; 21. an upper deck; 211. a support rib; 212. an upper clamping seat; 2121. an upper limiting plate; 2122. an upper arc seat; 213. an upper layer clamp joint; 22. a lower deck; 221. a rib plate; 222. a lower layer clamping seat; 2221. a lower limiting plate; 2222. a lower arc-shaped seat; 223. a lower layer clamp connector; 23. a drainage ditch; 24. a navigation aid light; 25. an aircraft securing device; 251. opening and closing the cover; 252. a rope; 253. a turn buckle; 26. a heat tracing band; 3. a protective net; 31. a support bar; 32. a hydraulic lever; 4. a staircase; 41. a handrail; 42. the handrail can be lifted; 421. and a hydraulic cylinder.

Detailed Description

The present application is described in further detail below with reference to figures 1-12.

The embodiment of the application discloses a metal structure parking apron. Referring to fig. 1 and 2, the metal structure apron comprises a supporting seat 1 for supporting, a deck 2 for parking a helicopter, a protective net 3 arranged around the deck 2, and a landing device; the metal structure parking apron utilizes a raised building 10 on the top layer of the building as a support, a support seat 1 is arranged around the raised building 10, a deck 2 is arranged on the raised building 10 and the support seat 1, an anti-skid layer, an H word yard mark and an annular positioning mark are coated on the deck 2, a drainage ditch 23 is fixedly connected to the edge of the deck 2, the drainage ditch 23 is of an annular groove structure with an upper opening, the drainage ditch 23 is matched with a drainage pipe, a navigation aid lamp 24 and an airplane fixing device 25 are further embedded on the deck 2, the navigation aid lamp 24 is arranged annularly, the airplane fixing device 25 is arranged around an airport mark, a snow melting system for melting snow is arranged on the deck 2, and the snow melting system comprises a heat tracing band 26 and a control switch for controlling the heat tracing band 26; the protective net 3 is hinged with the edge of the deck 2, a support rod 31 for supporting the protective net 3 is arranged below the protective net 3, and the support rod 31 is fixed around the deck 2 through bolts; the landing device is generally a stair 4 or a lifting elevator, the stair 4 is communicated with the deck 2 and the top layer of the building, handrails 41 and lifting handrails 42 are fixed on two sides of the stair 4, and the lifting handrails 42 are arranged at one end close to the deck 2. Referring to fig. 3, the supporting seat 1 includes a steel column 11, a steel beam 12, a keel 13 and a shock-absorbing layer 14, the steel column 11 and the steel beam 12 are generally H-shaped steel, and may be steel of other structures, the keel 13 is ring-shaped steel, and horizontally arranged at the upper ends of the steel columns 11 and the steel beams 12, the steel columns 11 are vertically and fixedly connected with the periphery of the protruding building 10, the steel foot bottom plates of the steel columns 11 are fixed with the building roof through foundation bolts, the steel column 11 is fixedly connected with the keel 13 through a high-strength bolt, one end of the steel beam 12 is fixedly connected with the steel column 11 through the high-strength bolt, the other end of the steel beam is fixedly connected with the keel 13 through the high-strength bolt, the deck 2 is welded with the keel 13 or connected with the keel through the high-strength bolt, a damping layer 14 is arranged between the deck 2 and the protruding building 10, in order to reduce the influence of the vibration generated when the helicopter rises and falls on the building, the top surface of the shock absorption layer 14 is flush with the upper end of the keel 13, so that the deck 2 can be kept and the gravity can be uniformly distributed on the raised building 10 and the supporting seat 1. Referring to fig. 5 and 6, the deck 2 includes an upper deck 21 and a lower deck 22, the upper deck 21 includes an aluminum alloy plate having a single-layer structure and support ribs 211, the aluminum alloy plate is provided with flow guide through holes, the flow guide through holes are arranged to effectively absorb impact airflow generated by helicopter landing, sound absorption, shock absorption and water accumulation prevention, and the cross section of the support ribs 211 is V-shaped with a flat angle at the lower end, so that the upper deck 21 can be more stable under the premise that the pressure of the upper deck 21 on the lower deck 22 is small; the lower deck 22 is a double-layer aluminum alloy plate, rib plates 221 are fixedly connected between the two layers of aluminum alloy plates, and the adjacent rib plates 221 are symmetrically inclined, so that the double-layer aluminum alloy plates and the rib plates 221 form an alternate trapezoidal structure; referring to fig. 4, the deck 2 is a detachable splicing structure, the deck 2 can be formed by splicing a plurality of aluminum alloy plates along a longitudinal and transverse vertical dividing line, so that the installation is more convenient, and the installation period of the parking apron is shortened, referring to fig. 5 and 6, the upper deck 21 and the lower deck 22 are both detachable structures, the upper deck 21 is provided with an upper clamping seat 212 and an upper clamping head 213 which are matched and clamped with each other, and the lower deck 21 is provided with a lower clamping seat 222 and a lower clamping head 223 which are matched and clamped with each other; the upper clamping seat 212 consists of an upper limiting plate 2121 and an upper arc seat 2122, wherein the aluminum alloy plate is bent downwards, the upper arc seat 2122 is bent downwards to the lower deck 21 to support the clamping part of the upper deck 21, the lower end of the upper clamping joint 213 is an arc surface matched with the arc seat of the upper clamping seat 212, and the upper end of the upper clamping joint 213 protrudes upwards to form a hook-shaped structure to be clamped in a cavity formed by the upper limiting plate 2121 and the upper arc seat 2122 of the upper clamping seat 212; the lower clamping seat 222 is similar to the upper clamping seat 212 in shape, the lower clamping seat 222 is composed of a lower limiting plate 2221 and a lower arc-shaped seat 2222, the aluminum alloy plate bends downwards, the lower clamping joint 223 is consistent with the upper clamping joint 213 in shape and clamped in a cavity formed by the limiting plate and the arc-shaped seat of the lower clamping seat 222, and after the unit deck 2 is clamped, a small gap is reserved between the unit upper decks 21 to play a role in buffering in the horizontal direction; as shown by the direction of the arrow in fig. 6, when the aircraft takes off and lands, impact force is generated on the deck 2, the upper deck 21 can disperse the impact force to the periphery in the horizontal direction through the single-layer aluminum alloy plate and the support ribs 211, the lower deck 22 can disperse the impact force in the vertical direction through the rib plates 221 after receiving the force transmitted from the upper deck 21, and the deck 2 can be supported more effectively by the multi-layer uniform impact force dispersion; a heat tracing band 26 is fixed to the underside of the upper deck 21.

Referring to fig. 7, annular steel for fixedly connecting the protection net 3 is fixed outside the drainage ditch 23 of the deck 2, support rods 31 of the protection net 3 are horizontally and fixedly connected to the circumferential surface of the annular steel in a radial shape, the support rods 31 are fixedly connected with the annular steel through fastening bolts, and the support rods 31 are generally H-shaped steel and can also be steel with other structures; the protection net 3 comprises a rectangular frame and a wire netting fixed in the rectangular frame, the lower end of the protection net 3 is hinged to one side, close to the deck 2, of the support rod 31, the protection net 3 further comprises a hydraulic rod 32 used for lifting, a cylinder body of the hydraulic rod 32 is hinged to the support rod 31, an output end of the hydraulic rod is hinged to the protection net 3, referring to fig. 8 and 9, the protection net 3 rises when the hydraulic rod 32 extends to surround the deck 2, the protection net 3 falls when the hydraulic rod 32 shortens, and collision between the helicopter and the protection net 3 when the helicopter rises and falls is prevented.

Referring to fig. 10 and 11, the liftable handrail 42 is connected with the stairs 4 and the adjacent handrail 41 in a sliding manner through the sliding grooves, the liftable handrail 42 further comprises a hydraulic cylinder 421, the hydraulic cylinder 421 is arranged in parallel with the stairs 4, the cylinder body of the hydraulic cylinder 421 is fixed on the outer side of the handrail 41, the output end of the hydraulic cylinder is fixed on the outer side of the liftable handrail 42, so that the liftable handrail 42 is lifted up when the hydraulic cylinder 421 is extended to surround the two sides of the stairs 4, and the liftable handrail 42 is lowered when the hydraulic cylinder 421 is shortened to prevent the helicopter from colliding with the liftable handrail 42; can set up gravity sensor in the deck 2, but the control switch of the hydraulic cylinder 421 of liftable handrail 42 and the hydraulic stem 32 of protection network 3 can go up and down with gravity sensor cooperation is automatic, the helicopter has not received pressure with the preceding gravity sensor of landing after the departure, control switch control hydraulic cylinder 421 and hydraulic stem 32 shorten, make liftable handrail 42 and protection network 3 drop, gravity sensor receives gravity after the helicopter falls, control switch control hydraulic cylinder 421 and hydraulic stem 32 extension, make liftable handrail 42 and protection network 3 rise, protect on deck 2 and the personnel through stair 4.

Referring to fig. 2 and 12, the airplane fixing device 25 is embedded in the deck 2, the lower end of the airplane fixing device 25 is communicated to the top of the protruding building 10 through a through hole formed in the deck 2 and the shock absorption layer 14, the airplane fixing device 25 comprises an opening and closing cover 251 and a rope 252 matched with a basket bolt 253, the rope 252 is generally a steel cable or can be made of other materials with better toughness such as a nylon rope, two ends of the basket bolt 253 are fixedly connected with the rope 252, one end of the rope 252 is fixedly connected with the top of the protruding building 10, the other end of the rope is used for being connected with the helicopter to fix the helicopter, the rope 252 can be fixed on a wheel or a skid of the helicopter through a spring hook, and when the airplane fixing device 25 is not used, the rope 252 can be retracted into the through hole and the opening and closing cover.

The implementation principle of the metal structure parking apron in the embodiment of the application is as follows: when the building is installed, a steel column 11 is fixed around a raised building 10 on the top layer of the building through foundation bolts, a steel beam 12 is fixed on the steel column 11 through high-strength bolts, the top ends of the steel column 11 and the steel beam 12 are kept flush in the horizontal plane direction, a keel 13 is fixed on the top ends of the steel column 11 and the steel beam 12 through high-strength bolts, a damping layer 14 is laid on the raised building 10, the top surface of the damping layer 14 is flush with the top end of the keel 13 in the horizontal plane direction, a deck 2 is assembled on the keel 13 and the damping layer 14, a heat tracing band 26 and a gravity sensor are embedded in the deck 2, the deck 2 is fixedly connected with the keel 13 through the high-strength bolts, an anti-skid layer, an H-word yard mark and an annular positioning mark are coated on the upper surface of the upper deck 21, a navigation aid lamp 24 and an airplane fixing device 25 are installed on the deck 2, a drainage ditch 23 is fixed, install protection network 3 on annular steel outer wall, protection network 3 leaves the breach unanimous with stair 4 width, is fixed in annular steel gapped one side with stair 4.

When the helicopter is not stopped, the gravity sensor is free from gravity, the hydraulic rod 32 and the hydraulic cylinder 421 are controlled to enable the protective net 3 and the liftable handrail 42 to keep descending, after the helicopter descends, the gravity sensor receives the gravity, the hydraulic rod 32 and the hydraulic cylinder 421 are controlled to enable the protective net 3 and the liftable handrail 42 to ascend, the opening and closing cover 251 is opened, the rope 252 is taken out and fixed on a wheel or a skid of the helicopter, and the basket bolt 253 is adjusted to enable the length of the rope 252 to be proper; when the airplane needs to take off, the rope 252 is untied and retracted, the opening and closing cover 251 is closed, and after the helicopter leaves the deck 2, the gravity sensor controls the hydraulic rod 32 and the hydraulic cylinder 421 to enable the protective net 3 and the liftable handrails 42 to descend. When the aircraft takes off and lands when the visibility is low or the environmental brightness is low, the navigation aid lamp 24 is turned on to ensure that the helicopter takes off and lands smoothly at night and under complicated weather conditions, and positioning guide information is effectively provided through color, shape and light intensity; during ice and snow climate, open the snow melting system and melt snow, keep the parking apron deck in operating condition all the time, guarantee that the helicopter can take off and land in all weather.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.