CN112173142B - Helicopter cable-proof device - Google Patents
Helicopter cable-proof device Download PDFInfo
- Publication number
- CN112173142B CN112173142B CN202011020420.8A CN202011020420A CN112173142B CN 112173142 B CN112173142 B CN 112173142B CN 202011020420 A CN202011020420 A CN 202011020420A CN 112173142 B CN112173142 B CN 112173142B
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- helicopter
- side end
- cable
- end plates
- ball
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- 239000004519 grease Substances 0.000 claims description 12
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 206010047531 Visual acuity reduced Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electric Cable Arrangement Between Relatively Moving Parts (AREA)
Abstract
The invention belongs to the technical field of structural design of helicopters, and discloses a cable-preventing device of a helicopter, which comprises: the device comprises a plurality of ball bearings, a plurality of fixed shafts, two side end plates and a triangle fixed mounting frame; the triangular fixed mounting rack is arranged on the helicopter front body; each ball bearing is fixed on the inner sides of the two side end plates through corresponding fixed shafts; and one ends of the two side end plates are respectively fixed on the triangular fixed mounting frame. When the helicopter touches the high-voltage cable, the cable avoidance device firstly touches the high-voltage cable, a plurality of ball bearings are arranged on the device, the bearings are smooth and roll freely, and the high-voltage cable can slide quickly along the upper part or the lower part of the device because the helicopter and the high-voltage cable have relative speeds, so that the helicopter is separated from the helicopter and is prevented from being wound.
Description
Technical Field
The invention belongs to the technical field of structural design of helicopters, and particularly relates to a cable-preventing device of a helicopter.
Background
The helicopter is when low-altitude flight, under the bad good environmental conditions in field of vision such as night sky or rain and fog, and the flight personnel in time do not observe external environment situation, can touch the high tension cable of ground installation occasionally, when the helicopter touched the high tension cable, because modern helicopter has done electrically conductive overlap joint and has handled, the high tension electricity can not cause the injury to air personnel, but the high tension cable can twine the helicopter, lead to the fact the influence to helicopter flight control, can cause helicopter out-of-control seriously, lead to the emergence of helicopter accident. At present, many helicopter overtaking collision accidents of high-voltage wires caused by helicopter overtaking crash accidents occur at home and abroad.
At present, the internal device for preventing the cable of the helicopter is mainly characterized in that a plurality of cable cutters are arranged on the helicopter and generally arranged on a cockpit ceiling and an undercarriage buffer strut, the cable cutters are arranged into a scissor type, when the helicopter scrapes a high-voltage cable, the high-voltage cable is cut by the helicopter by force according to the inertia flying in front when the helicopter just reasonably blocks the knife edge position of the cable cutters, and therefore the helicopter is not wound by the high-voltage cable, the high-voltage cable can be avoided, and the safety accident is avoided.
The cable cutter installed on the existing helicopter cuts the high-voltage cable forcibly through the flight inertia performance of the helicopter, and the device actually has the following problems:
when the helicopter flies actually, the helicopter touches the high-voltage cable, because the installation position of the cable cutter is fixed, the high-voltage cable can not be just clamped to the knife edge of the cable cutter, and if the high-voltage cable is clamped to other parts of the helicopter, the cable cutter can not play a role.
And the current high-voltage cable is thick (the diameter is about 50mm-160 mm), even if the cable cutter blocks the high-voltage cable to the knife edge position, the high-voltage cable is difficult to cut off in a short time when the helicopter flies ahead, and the effect of immediately cutting off the high-voltage cable cannot be achieved.
The number of high-voltage wires installed on an outdoor high-voltage wire tower is generally 3-6, the number of the high-voltage wires is large, the number of cable cutters capable of being installed on a helicopter is limited, and the existing helicopter is generally provided with 3 high-voltage wires (the upper part is 1, and the left part and the right part are 1 respectively) and cannot meet the requirement of simultaneously cutting off the large number of high-voltage cables.
The cable cutter is through cutting off the high-voltage cable and exchanging the flight safety of helicopter, can cause the outage phenomenon to the electric wire netting system, falls on the ground after the high-voltage cable cuts off, causes secondary damage easily, causes certain safety threat to ground building and past personnel to the repair work in the future that has increased electric power workman has caused certain economic loss.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a helicopter prevents cable device, increases a cable and avoids the device in helicopter anterior position, and its principle is when the helicopter touches the high-voltage cable, prevents that cable and avoids the device at first can touch the high-voltage cable, installs a plurality of ball bearing on the device, and the bearing is smooth, and the roll is free, because the helicopter has relative speed with the high-voltage cable, the high-voltage cable can slide along the device top or below is quick to break away from the helicopter, has avoided the helicopter to be twined.
The technical scheme of the invention is as follows:
a helicopter anti-cabling apparatus, said apparatus comprising: the device comprises a plurality of ball bearings 1, a plurality of fixed shafts 3, two side end plates 2 and a triangular fixed mounting frame 4;
the triangular fixed mounting rack 4 is arranged on a body in front of the helicopter;
each ball bearing 1 is fixed on the inner sides of the two side end plates 2 through corresponding fixed shafts 3;
and one ends of the two side end plates 2 are respectively fixed on the triangular fixed mounting frame 4.
The technical scheme of the invention has the characteristics and further improvements that:
(1) The ball bearing 1 is a ball bearing, a ball bearing or a cylindrical bearing.
(2) And rounding the windward side of the side end plate, and spraying an antioxidant and a paint layer on the surface of the side end plate.
(3) And spraying an antioxidant and a paint layer on the surface of the ball bearing 1 to smooth the surface.
(4) And uniform lubricating grease is coated between every two ball bearings, so that the friction resistance of the ball bearings is reduced.
(5) A surrounding type ball is provided between the ball bearing 1 and the fixed shaft, grease is applied to the inside of the ball, and a grease film is formed between the surfaces of the ball.
(6) The two side end plates 2 are foldable or rotatable structures.
(7) After the two side end plates 2 are unfolded, the bottom of each side end plate is flush with the bottom of the undercarriage, and the top of each side end plate is flush with the center of the hub.
(8) The diameters of the ball bearings are different, and the ball bearings are arranged on the inner sides of the two side end plates according to the shape that the middle is large and the two sides are small.
The invention has the beneficial effects that:
the invention relates to a cable avoiding device which is additionally arranged at the front part of a helicopter, and the principle of the cable avoiding device is that when the helicopter touches a high-voltage cable, the cable avoiding device firstly touches the high-voltage cable, a plurality of ball bearings are arranged on the device, the bearings are smooth and roll freely, and the high-voltage cable can slide quickly along the upper part or the lower part of the device due to the relative speed of the helicopter and the high-voltage cable, so that the helicopter is separated from the helicopter, and the helicopter is prevented from being wound. The normal cruising speed of the helicopter is about 100-200 km/h, the high-voltage cable is thermal expansion and cold prevention and convenient to maintain, the normal state is arc-shaped, and the high-voltage cable has longer stretching allowance, so that the helicopter has more time for the helicopter to touch the high-voltage cable and separate the high-voltage cable from the helicopter better and more safely.
Drawings
FIG. 1 is an isometric view of a ball-bearing anti-cabling apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is an isometric view of a ball bearing type cable guard provided by an embodiment of the present invention;
FIG. 5 is a front view of FIG. 4;
fig. 6 is a cross-sectional view of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a helicopter cable-prevention device, as shown in fig. 1, the device includes: the device comprises a plurality of ball bearings 1, a plurality of fixed shafts 3, two side end plates 2 and a triangle fixed mounting frame 4.
For ease of understanding, fig. 2 and 3 are given, with fig. 2 being a front view of fig. 1; fig. 3 is a cross-sectional view of fig. 1.
The triangular fixed mounting frame 4 is arranged on a helicopter front body;
each ball bearing 1 is fixed on the inner sides of the two side end plates 2 through corresponding fixed shafts 3;
and one ends of the two side end plates 2 are respectively fixed on the triangle fixed mounting frame 4.
Further:
(1) The ball bearing 1 is a ball bearing, a ball bearing or a cylindrical bearing.
(2) And rounding the windward side of the side end plate, and spraying an antioxidant and a paint layer on the surface of the side end plate.
(3) And spraying an antioxidant and a paint layer on the surface of the ball bearing 1 to smooth the surface.
(4) And uniform lubricating grease is coated between every two ball bearings, so that the friction resistance of the ball bearings is reduced.
(5) A surrounding type ball is provided between the ball bearing 1 and the fixed shaft, grease is applied to the inside of the ball, and a grease film is formed between the surfaces of the ball.
(6) The two side end plates 2 are of a foldable or rotatable structure.
(7) After the two side end plates 2 are unfolded, the bottom of the two side end plates is flush with the bottom of the undercarriage, and the top of the two side end plates is flush with the center of the hub.
(8) The diameters of the ball bearings are different, and the ball bearings are arranged on the inner sides of the two side end plates according to the shape that the middle is large and the two sides are small.
The invention is generally arranged at the foremost end of a helicopter body (5), and the side end plate (2) and the body structure can be fixedly connected by bolts, rivets or hinges through a triangular fixed mounting frame (4), and the fixing forms are various. Rounding the front parts of the side end plates, spraying an antioxidant and a paint layer on the surfaces of the side end plates to enable the surfaces of the side end plates to be smooth, installing a fixed shaft (3) between the side end plates on two sides, installing a ball bearing (1) on the outer ring of the fixed shaft, enabling the surfaces of the roller bearing to be smooth by spraying the antioxidant and the paint layer on the surfaces of the roller bearing, and smearing uniform lubricating grease between every two cylinders to reduce the friction resistance; surrounding spherical balls are arranged between the thin cylinder and the fixed shaft, a certain amount of lubricating grease is coated inside the surrounding spherical balls, and a grease film is formed on the surfaces of the balls. When the helicopter touches the high-voltage cable at a certain speed, the high-voltage cable can quickly slide along the surface of the ball bearing along a track by the rotating inertia of the ball bearing so as to separate the high-voltage cable from the device. According to the technical requirements of different helicopters on size, weight and the like, a ball bearing type cable-preventing device shown in figure 4 can be arranged, and the device is light in structure, simple in process and convenient to install and maintain. Fig. 5 and 6 are given for convenience of understanding, and fig. 5 is a front view of fig. 4; fig. 6 is a cross-sectional view of fig. 4.
The embodiment of the invention provides a main key point that a cable-preventing device is vertically arranged at the forefront of a helicopter cockpit, a smooth rolling device which can freely roll is arranged in the device, and the rolling device can be set to be diversified, such as a ball bearing, a cylindrical bearing and the like; and the cable avoiding device can also be arranged into a telescopic folding type, a free rotation type and the like.
Through preventing that the cable device touches the high-voltage cable at first, high-voltage cable and helicopter have relative speed, let the high-voltage cable slide along preventing the top or below of cable device fast to break away from the helicopter, with the high-voltage cable separation.
Compared with the traditional cable-proof device (cable cutter), the invention has the following advantages:
(1) traditional cable cutter installs at cockpit ceiling and nose landing gear, but this kind of state has the design requirement to the cockpit ceiling (the cockpit ceiling needs streamlined smooth, and does not have unnecessary obstacle), also has the design requirement to the landing gear (the landing gear generally need be designed into the bracing formula, vertical landing gear can't block the high-voltage cable to the edge of a knife position), and helicopter appearance structure is complicated, when touching the high-voltage cable, does not necessarily can accurately block the high-voltage cable to the edge of a knife position. The helicopter body structure can be matched with the helicopter body structure of any structure for installation, basically has no special requirements on the front appearance structure of the helicopter, and can be selectively set into a reversible folding type and a telescopic type, and the device can be folded or telescopically unfolded at night or under the condition of poor vision conditions.
(2) The invention can solve the problem that the helicopter has a large number of high-voltage cables, and the principle is that the high-voltage cables are separated from the helicopter one by using the device, so that the high-voltage cables are prevented from being wound, the flight accidents of the helicopter are reduced, and the survival capacity is improved.
(3) The invention can not cause the cut-off damage to the high-voltage cable, can not cause the power failure phenomenon to the power grid system, and can not cause economic loss.
Compared with the traditional mode of cutting off the high-voltage cable by the cable cutting device, the high-voltage cable cutting device is stable, reliable, simple and convenient, and has no special flight requirement.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. The scope of the present invention is not limited thereto, and any modifications or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A helicopter anti-cabling apparatus, said apparatus comprising: the device comprises a plurality of ball bearings (1), a plurality of fixed shafts (3), two side end plates (2) and a triangular fixed mounting frame (4);
the triangular fixed mounting rack (4) is arranged on a helicopter front body;
each ball bearing (1) is fixed on the inner sides of the two side end plates (2) through corresponding fixed shafts (3);
and one ends of the two side end plates (2) are respectively fixed on the triangular fixed mounting frame (4).
2. A helicopter anti-cabling apparatus according to claim 1,
the ball bearing (1) is a ball bearing, a ball bearing or a cylindrical bearing.
3. A helicopter cable guard according to claim 1,
and rounding the windward side of the side end plate, and spraying an antioxidant and a paint layer on the surface of the side end plate.
4. A helicopter cable guard according to claim 1,
and spraying an antioxidant and a paint layer on the surface of the ball bearing (1) to smooth the surface.
5. A helicopter anti-cabling apparatus according to claim 4,
and uniform lubricating grease is coated between every two ball bearings, so that the friction resistance is reduced.
6. A helicopter cable guard according to claim 4,
and a surrounding spherical ball is arranged between the ball bearing (1) and the fixed shaft, lubricating grease is coated inside the surrounding spherical ball, and a grease film is formed between the surfaces of the ball.
7. Helicopter cable-guard device according to claim 1, characterized in that said two side end plates (2) are of a foldable or rotatable structure.
8. A helicopter anti-cabling device according to claim 1, wherein said two side end plates (2) are deployed with the bottom flush with the undercarriage bottom and the top flush with the hub centre.
9. A helicopter cable guard according to claim 1 wherein the plurality of ball bearings are of different diameters and are arranged with a larger center and smaller sides inboard of the two side end plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020420.8A CN112173142B (en) | 2020-09-25 | 2020-09-25 | Helicopter cable-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020420.8A CN112173142B (en) | 2020-09-25 | 2020-09-25 | Helicopter cable-proof device |
Publications (2)
| Publication Number | Publication Date |
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| CN112173142A CN112173142A (en) | 2021-01-05 |
| CN112173142B true CN112173142B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011020420.8A Active CN112173142B (en) | 2020-09-25 | 2020-09-25 | Helicopter cable-proof device |
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| CN (1) | CN112173142B (en) |
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| US6942177B1 (en) * | 2004-10-27 | 2005-09-13 | Aerial Machine & Tool Corporation | Static discharge cable for aircraft and method of using same |
| WO2006069997A1 (en) * | 2004-12-30 | 2006-07-06 | Airbus España, S.L. | Device for electrical bonding of electrical cables shielding on composite structures |
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2020
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