CN109866934B - Helicopter fire control nacelle for forest fire prevention - Google Patents
Helicopter fire control nacelle for forest fire prevention Download PDFInfo
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- CN109866934B CN109866934B CN201910115225.4A CN201910115225A CN109866934B CN 109866934 B CN109866934 B CN 109866934B CN 201910115225 A CN201910115225 A CN 201910115225A CN 109866934 B CN109866934 B CN 109866934B
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Abstract
The invention belongs to the field of forest fire prevention equipment, and particularly relates to a helicopter fire control nacelle for forest fire prevention, which comprises a lifting mechanism and a nacelle, wherein the nacelle is connected with the lifting mechanism through a lifting rope, the nacelle structurally comprises a square groove, two side turning plates, a floating plate, an upper cover and a soft lining, the square groove is of a rectangular structure, the heights of four vertical edges of the square groove are the same, the two side turning plates are respectively hinged to two shorter vertical edges of the square groove, the floating plate is made of a light material with the density smaller than that of a fire extinguishing agent, the upper side edge of each side turning plate is provided with a bending part bent inwards, and the bending part hooks the upper cover so as to prevent the upper cover from falling out of the space between the two side turning plates. The floating plate is arranged in the nacelle, so that the flow of the fire extinguishing agent can be effectively restrained in the transportation process of the helicopter, and the change of the gravity center of the nacelle caused by the flow of the fire extinguishing agent is avoided, thereby eliminating the potential safety hazard in flight and reducing the technical requirements on pilots.
Description
Technical Field
The invention belongs to the field of forest fire prevention equipment, and particularly relates to a helicopter fire control pod for forest fire prevention.
Background
Forest fire prevention is an important work content in forestry management work, and helicopter extinguishment is an important extinguishment means. Among the prior art, helicopter mode of putting out a fire mainly has two kinds, but all has the drawback: one is to adopt a special fire-fighting helicopter, and the defects of the special fire-fighting helicopter are that the purchase cost is very high, the utilization rate is low, and therefore, the comprehensive use cost is very high; the other method is to adopt a common helicopter to hoist and spray a fire extinguishing agent, when the fire is extinguished by adopting the method, the nacelle is freely suspended below the helicopter through a steel wire rope, the transportation mode can seriously affect the flying stability of the helicopter and slow the flying speed of the helicopter, and meanwhile, when the helicopter accelerates or decelerates, the liquid fire extinguishing agent can flow uncontrollably in the nacelle under the action of inertia, the flow can suddenly change the gravity center of the nacelle, the gravity center layout when the helicopter flies is seriously affected, huge hidden dangers are caused to the flying safety of the airplane, and extremely high requirements are provided for the driving technology of pilots.
Disclosure of Invention
The invention provides a helicopter fire control pod for forest fire prevention, which aims to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme: the invention provides a helicopter fire control nacelle for forest fire prevention, which comprises a lifting mechanism and a nacelle, wherein the nacelle is connected with the lifting mechanism through a lifting rope,
the lifting mechanism structurally comprises an upper plate, two lower plates and a winch, wherein the upper plate is lapped on two bottom supports on the helicopter, the two lower plates are of a long strip-shaped structure and are respectively positioned below the two bottom supports, the two lower plates are respectively connected to the upper plate through bolts, the two bottom supports are clamped between the upper plate and the lower plates so as to fix the upper plate on the helicopter, the winch is fixedly arranged on the upper side of the upper plate, and the lifting rope is a winding rope of the winch;
the pod structurally comprises a square groove, two side turning plates, a floating plate, an upper cover and a soft lining, wherein the square groove is of a rectangular structure, the heights of four vertical edges of the square groove are the same, the two side turning plates are respectively hinged on two narrower vertical edges of the square groove, the soft lining is of a cuboid structure with an open top end, the bottom of the soft lining is fixedly connected to the inner wall of the square groove, two smaller vertical surfaces of the soft lining respectively lean against the two side turning plates, the floating plate is made of light materials with the density smaller than that of a fire extinguishing agent, the floating plate is of a rectangular plate structure, four edges of the floating plate are matched with the four vertical surfaces of the soft lining, the floating plate is parallel to the bottom of the square groove, the upper cover is also of a rectangular plate structure, four sides of the upper cover are also matched with the four vertical surfaces of the soft lining, the upper side of each side turning plate is provided with a bending part bent inwards, and the bending parts hook the upper cover so as to prevent the upper cover from being pulled out of the two side turning plates, a lifting lug is fixed on the upper side of the upper cover, and the lower end of the lifting rope is connected to the lifting lug;
a torsion spring is arranged at the hinged position of the side turning plate and the square groove, and the two side turning plates keep the movement trend of turning towards the inner side of the square groove under the action of the torsion spring;
the lower side of the square groove is provided with a roller;
the lower side of the floating plate is provided with a grid structure.
The hoisting device comprises three winches, wherein one of the three winches is used for providing power for lifting of a nacelle and is called as a main winch, the remaining two winches are used for preventing the nacelle from shaking and are called as auxiliary winches, a lifting rope on the main winch is connected to a main lifting lug in the center of an upper cover, two lifting ropes which move synchronously are led out from each auxiliary winch, and four lifting ropes led out from the two auxiliary winches are respectively connected with auxiliary lifting lugs distributed around the main lifting lug.
As a further technical scheme, a pressure sensor is arranged at the top of the side turning plate.
As a further technical scheme, the floating plate is made of rigid foam plastics.
As a further technical scheme, the floating plate is made of a wood plate.
As a further technical scheme, the soft inner lining is made of rubberized canvas, and the rubberized thickness of the canvas is not less than 2 mm.
The beneficial effects of the invention are as follows:
1. different from the barrel-shaped nacelle in the prior art, the rectangular nacelle with the length direction along the horizontal direction is adopted, and when the helicopter is transported, the nacelle is lifted and is pressed on the bottom support of the helicopter, so that the nacelle can be prevented from shaking in the transportation process, and the flight stability of the helicopter is effectively improved.
2. The floating plate is arranged in the nacelle, so that the flow of the fire extinguishing agent can be effectively restrained in the transportation process of the helicopter, and the change of the gravity center of the nacelle caused by the flow of the fire extinguishing agent is avoided, thereby eliminating the potential safety hazard in flight and reducing the technical requirements on pilots.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the nacelle of FIG. 1;
FIG. 3 is a schematic view of the structure after the pod has fallen to the ground and is folded;
FIG. 4 is a schematic diagram of the distribution structure of the main lifting lug and the auxiliary lifting lug on the upper cover;
fig. 5 is a layout view of the sub-winch on the upper plate.
In the figure: 1-roller, 2-square groove, 3-side turning plate, 4-floating plate, 5-upper cover, 6-bottom bracket, 7-auxiliary winch, 8-main winch, 9-upper plate, 10-lower plate, 11-bending part, 12-soft lining, 13-fire extinguishing agent, 14-lifting rope, 15-main lifting lug and 16-auxiliary lifting lug.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
this embodiment comprises a hoisting mechanism and a nacelle connected to the hoisting mechanism by means of hoisting ropes 14. The above is a common structure in the prior art, and is not described herein again.
The innovation of the invention is that the hoisting mechanism and the nacelle structure are improved.
In the prior art, the hoisting mechanism of a common helicopter is low in strength and difficult to bear the lifting task of a nacelle with a large load, and a special fire-fighting helicopter with a built-in large-scale hoisting machine is expensive. In the invention, the lifting mechanism comprises an upper plate 9, two lower plates 10 and a winch, wherein the upper plate 9 is lapped on two bottom supports 6 on the helicopter, the lower plates 10 are in a long strip structure, the number of the lower plates 10 is two, the two lower plates 10 are respectively positioned below the two bottom supports 6, the two lower plates 10 are respectively connected to the upper plate 9 through bolts, the two bottom supports 6 are clamped between the upper plate 9 and the lower plates 10 so as to fix the upper plate 9 on the helicopter, the winch is fixedly arranged on the upper side of the upper plate 9, and the lifting rope 14 is a hoisting rope of the winch. The upper plate 9 is used for installing a winch, and the lower plate is used for keeping the shape of the landing part of the helicopter basically unchanged, so that the lifting of the helicopter is not influenced.
The nacelle structurally comprises a square groove 2, two side turning plates 3, a floating plate 4, an upper cover 5 and a soft lining 12. The square groove 2, the two side flaps 3 and the upper cover 5 together form a rigid frame of the nacelle, and the soft lining 12 forms a containing chamber for preventing the fire extinguishing agent 13 from leaking out.
The square groove 2 is of a rectangular structure, four vertical edges of the square groove 2 are the same in height, the two side turning plates 3 are respectively hinged on two narrower vertical edges of the square groove 2, the soft lining 12 is of a cuboid structure with an open top end, the bottom of the soft lining 12 is fixedly connected to the inner wall of the square groove 2, two smaller vertical surfaces of the soft lining 12 respectively lean against the two side turning plates 3, the floating plate 4 is made of a light material with the density smaller than that of the fire extinguishing agent 13, the floating plate 4 is of a rectangular plate structure, four edges of the floating plate 4 are matched with four vertical surfaces of the soft lining 12, the floating plate 4 is parallel to the bottom of the square groove 2, the upper cover 5 is also of a rectangular plate structure, four edges of the upper cover 5 are also matched with four vertical surfaces of the soft lining 12, an inward-bent part 11 is arranged on the upper side edge of the side turning plate 3, and the upper cover 5 is hooked by the bent part 11 so as to prevent the upper cover 5 from being separated from the two side turning plates 3, a lifting lug is fixed on the upper side of the upper cover 5, and the lower end of the lifting rope 14 is connected to the lifting lug.
Before use, the nacelle is in a folded state as shown in fig. 3 so as to be stored and transported, when the nacelle needs to be used, the upper cover 5 is lifted upwards by a lifting device (comprising a helicopter), the side turning plates 3 are outwards turned to a vertical position (the vertical position is the limit position of the side turning plates 3) as shown in fig. 1 and 2 under the contact action of the upper cover 5 in the lifting process of the upper cover 5, at the moment, fire extinguishing agents 13 are injected through fire extinguishing agent injection ports (which are in a conventional arrangement and not shown) arranged on the side surfaces of the square groove 2, and the floating plates float under the action of the fire extinguishing agents 13.
Different from the barrel-shaped nacelle in the prior art, the rectangular nacelle with the length direction along the horizontal direction is adopted, and when the helicopter is transported, the nacelle is lifted and is pressed on the bottom support 6 of the helicopter, so that the nacelle can be prevented from shaking in the transportation process, and the flight stability of the helicopter is effectively improved. In addition, the floating plate 4 is arranged in the nacelle, so that the flow of the fire extinguishing agent can be effectively restrained in the transportation process of the helicopter, and the change of the gravity center of the nacelle caused by the flow of the fire extinguishing agent is avoided, thereby eliminating the potential safety hazard in flight and reducing the technical requirements on pilots. In order to further impede the flow of fire suppressant,
torsion springs are arranged at the hinged parts of the side turning plates 3 and the square grooves 2, the two side turning plates 3 keep the movement trend of turning towards the inner sides of the square grooves 2 under the action of the torsion springs, after the use, the upper cover 5 descends into the square grooves 2, and the side turning plates 3 automatically turn to the position states shown in the figure 3 under the action of the torsion springs.
The lower side of the square groove 2 is provided with a roller 1, so that the pod can move on the ground conveniently.
The hoisting device comprises three winches, wherein one of the three winches is used for providing power for lifting of a nacelle and is called as a main winch 8, the remaining two winches are used for preventing the nacelle from shaking and are called as auxiliary winches 7, a lifting rope 14 on the main winch 8 is connected to a main lifting lug 15 in the center of an upper cover 5, two lifting ropes 14 which move synchronously are led out from each auxiliary winch 7 (each auxiliary winch 7 is provided with two coaxial reels, the two lifting ropes 14 connected to the same auxiliary winch 7 are wound on the two reels respectively), and four lifting ropes led out from the two auxiliary winches 7 are connected with auxiliary lifting lugs 16 distributed around the main lifting lug 15 respectively.
The top of the side turning plate 3 is provided with a pressure sensor, when the upper edge of the side turning plate 3 is abutted against the lower plate 10, the pressure sensor senses the pressure, at the moment, the nacelle is regarded as reaching the upper limit position, and the lifting actions of the three winches are all stopped and locked.
The floating plate 4 is made of rigid foam plastic or wood board, and other light composite materials can be adopted, as long as the floating plate can float on the surface of the fire extinguishing agent 13 and has certain strength.
The soft inner lining 12 is made of rubberized canvas, the rubberized thickness of the canvas is not less than 2mm, and the sufficient rubberized thickness is favorable for guaranteeing the smoothness of the inner wall of the soft inner lining 12, so that the floating plate 4 can float more smoothly in the pod, and gaps between the floating plate and the inner wall of the soft inner lining 12 are reduced as much as possible.
Claims (5)
1. A helicopter fire control nacelle for forest fire protection, comprising a hoisting mechanism and a nacelle, the nacelle being connected to the hoisting mechanism by a hoisting rope (14), characterized in that:
the lifting mechanism structurally comprises an upper plate (9), two lower plates (10) and a winch, wherein the upper plate (9) is lapped on two bottom supports (6) on the helicopter, the two lower plates (10) are of long strip structures, the number of the lower plates (10) is two, the two lower plates (10) are respectively positioned below the two bottom supports (6), the two lower plates (10) are respectively connected to the upper plate (9) through bolts, the two bottom supports (6) are clamped between the upper plate (9) and the lower plates (10) so that the upper plate (9) is fixed on the helicopter, the winch is fixedly installed on the upper side of the upper plate (9), and a lifting rope (14) is a hoisting rope of the winch;
the nacelle is of a cuboid structure, the length direction of the cuboid is along the horizontal direction, and when the helicopter is transported, the nacelle is lifted and is abutted against the bottom support of the helicopter, so that the nacelle can be prevented from shaking in the transportation process, and the flight stability of the helicopter is effectively improved;
the pod structurally comprises a square groove (2), two side turning plates (3), a floating plate (4), an upper cover (5) and a soft lining (12), wherein the square groove (2) is of a rectangular structure, the heights of four vertical sides of the square groove (2) are the same, the two side turning plates (3) are respectively hinged on two narrower vertical sides of the square groove (2), the soft lining (12) is of a cuboid structure with an open top end, the bottom of the soft lining (12) is fixedly connected to the inner wall of the square groove (2), two smaller vertical sides of the soft lining (12) respectively lean against the two side turning plates (3), the floating plate (4) is made of a light material with the density smaller than that of a fire extinguishing agent (13), the floating plate (4) is of a rectangular plate material, the four sides of the floating plate (4) are matched with the four vertical sides of the soft lining (12), and the floating plate (4) is parallel to the bottom of the square groove (2), the upper cover (5) is also of a rectangular plate structure, four sides of the upper cover (5) are also matched with four vertical surfaces of the soft lining (12), bent parts (11) which are bent inwards are arranged on the upper side edges of the side turning plates (3), the bent parts (11) hook the upper cover (5) so as to prevent the upper cover (5) from being separated from the space between the two side turning plates (3), lifting lugs are fixed on the upper side of the upper cover (5), and the lower ends of the lifting ropes (14) are connected to the lifting lugs;
torsion springs are arranged at the hinged positions of the side turning plates (3) and the square groove (2), and the two side turning plates (3) keep the trend of turning towards the inner side of the square groove (2) under the action of the torsion springs;
the lower side of the square groove (2) is provided with a roller (1);
the lower side of the floating plate is provided with a grid structure;
the lifting mechanism comprises three winches, wherein one of the three winches is used for providing power for lifting of a nacelle and is called as a main winch (8), the remaining two winches are used for preventing the nacelle from shaking and are called as auxiliary winches (7), a lifting rope (14) on the main winch (8) is connected to a main lifting lug (15) in the center of an upper cover (5), two lifting ropes (14) which move synchronously are led out from each auxiliary winch (7), and four lifting ropes led out from the two auxiliary winches (7) are respectively connected with auxiliary lifting lugs (16) distributed around the main lifting lug (15).
2. A helicopter fire pod for forest fire protection as defined in claim 1 wherein: and a pressure sensor is arranged at the top of the side turning plate (3).
3. A helicopter fire pod for forest fire protection as defined in claim 1 wherein: the floating plate (4) is made of rigid foam plastics.
4. A helicopter fire pod for forest fire protection as claimed in claim 1, wherein: the floating plate (4) is made of wood plates.
5. A helicopter fire pod for forest fire protection as defined in claim 1 wherein: the soft inner lining (12) is made of rubberized canvas, and the rubberized thickness of the canvas is not less than 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910115225.4A CN109866934B (en) | 2019-02-15 | 2019-02-15 | Helicopter fire control nacelle for forest fire prevention |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910115225.4A CN109866934B (en) | 2019-02-15 | 2019-02-15 | Helicopter fire control nacelle for forest fire prevention |
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| Publication Number | Publication Date |
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| CN109866934A CN109866934A (en) | 2019-06-11 |
| CN109866934B true CN109866934B (en) | 2022-07-26 |
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| CN201910115225.4A Active CN109866934B (en) | 2019-02-15 | 2019-02-15 | Helicopter fire control nacelle for forest fire prevention |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112630819B (en) * | 2020-12-23 | 2022-08-26 | 徐志雄 | Airborne pod radiation environment monitoring device |
| CN114348271B (en) * | 2022-01-13 | 2023-08-04 | 中国人民解放军陆军特色医学中心 | Stable lifting device for helicopter rescue |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3735644B2 (en) * | 1996-02-05 | 2006-01-18 | 正典 藤崎 | Helicopter fire extinguishing system |
| PT2247515E (en) * | 2008-02-25 | 2012-08-02 | Agc Glass Europe | Container |
| CN201793021U (en) * | 2010-06-07 | 2011-04-13 | 帅金定 | Pod-type helicopter |
| CN202557796U (en) * | 2012-03-26 | 2012-11-28 | 陈仁多 | Multifunctional water-jet helicopter for forest fire prevention |
| CN204527645U (en) * | 2015-02-06 | 2015-08-05 | 浙江大学 | A kind of liquid that alleviates inclines the agricultural plant protection unmanned plane medicine-chest swung |
| CN106114865A (en) * | 2016-08-08 | 2016-11-16 | 国网湖南省电力公司 | Transmission line forest fire based on unmanned plane fire extinguishing platform |
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