CN215850569U - Tool for preventing main wheel dustproof cap of dismounting Boeing 737NG airplane from accidentally dropping - Google Patents
Tool for preventing main wheel dustproof cap of dismounting Boeing 737NG airplane from accidentally dropping Download PDFInfo
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- CN215850569U CN215850569U CN202120468212.8U CN202120468212U CN215850569U CN 215850569 U CN215850569 U CN 215850569U CN 202120468212 U CN202120468212 U CN 202120468212U CN 215850569 U CN215850569 U CN 215850569U
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- leakage
- reinforcing ring
- main wheel
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Abstract
The utility model discloses a tool for preventing a main wheel dustproof cap of a dismounted Boeing 737NG airplane from accidentally falling, which comprises a leakage-proof sheet, a reinforcing ring and a warning belt, wherein the reinforcing ring is positioned at the geometric center of the leakage-proof sheet, the reinforcing ring is hollow, the inner diameter of the reinforcing ring is matched with an inflating nozzle, and the warning belt is connected with the leakage-proof sheet. The anti-leakage device is simple in structure and convenient to operate, and when in operation, a crew member only needs to align the reinforcing ring with the hollow part of the main wheel hub, and the reinforcing ring is matched with the inflating nozzle, the anti-leakage sheet forms a protective cover around the inflating nozzle, so that when the crew member twists the anti-leakage cap, even if the anti-leakage cap falls off due to improper operation, the anti-leakage cap is supported by the anti-leakage sheet and cannot fall into the main wheel hub, wherein the reinforcing ring is made of a material with higher hardness than the anti-leakage sheet, and the crew member can conveniently sleeve the anti-leakage sheet on the inflating nozzle; in addition, the warning tape is red, and characters are printed on the warning tape before takeoff, so that tools are prevented from being left on an airplane.
Description
Technical Field
The utility model relates to a disassembling tool, in particular to a tool for preventing a main wheel dust cap of a disassembling boeing 737NG airplane from accidentally falling.
Background
The boeing 737NG aircraft is equipped with two main undercarriages and a nose undercarriage, each undercarriage being equipped with two tires, the undercarriages and tires being used for ground taxiing of the aircraft. Wherein, the wheel hub of every main undercarriage is fretwork and gapped, and charging connector and dust cap just are in the wheel hub clearance.
In order to meet the overall streamline design of the airplane, the inflating nozzle and the dustproof cap of the airplane wheel of the main landing gear are arranged in the hub. The dust cap at the inflating nozzle needs to be screwed off during the process of measuring the tire pressure and inflating the wheel. Because the dustproof cap is arranged in the hub, the dustproof cap can be grabbed by a thumb and an index finger only in the process of screwing the dustproof cap. The tire pressure test and inflation are carried out on the tire of the airplane every day when the airplane is maintained by the crew, so that the situation that the dustproof cap falls into the hub of the airplane wheel due to misoperation when the crew screws the dustproof cap is very easy to occur. When the above condition takes place, need dismantle the wheel with the aircraft jacking, not only consume the manpower, change and lead to the aircraft to delay, influence the passenger trip.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a tool for preventing a main wheel dustproof cap of a dismounted Boeing 737NG aircraft from accidentally falling, the tool is simple in structure and convenient to operate, and the defect that the wheel dustproof cap of a wheel of a spinning undercarriage of the existing 737NG aircraft is easy to fall into a wheel hub can be overcome.
The purpose of the utility model is realized by adopting the following technical scheme:
the tool for preventing the main wheel dustproof cap of the dismounting Boeing 737NG airplane from accidentally dropping is characterized by comprising a leak-proof sheet and a reinforcing ring, wherein the reinforcing ring is positioned at the geometric center of the leak-proof sheet, is hollow and has the inner diameter matched with an inflating nozzle.
Preferably, the anti-leakage sheet is made of flexible materials and is circular or oval in shape.
Preferably, the material hardness of the reinforcing ring is larger than that of the leakage-proof sheet, and the inner diameter of the reinforcing ring is 1.1 cm.
Further, still include warning area, warning area with the leak protection piece is connected.
Preferably, the warning tape is made of a flexible material.
Compared with the prior art, the utility model has the following advantages:
(1) the anti-leakage device is simple in structure and convenient to operate, when in operation, a crew member only needs to align the reinforcing ring with the hollow part of the main wheel hub, the inflating nozzle is plugged with the reinforcing ring, the inner diameter of the reinforcing ring is matched with the inflating nozzle, the anti-leakage sheet forms a protective cover around the inflating nozzle, and even if the crew member rotates the anti-leakage cap improperly, the anti-leakage cap is supported by the anti-leakage sheet and cannot fall into the main wheel hub, wherein the reinforcing ring is made of a material with higher hardness than the anti-leakage sheet, so that the crew member can conveniently sleeve the anti-leakage sheet on the inflating nozzle.
(2) The utility model is also provided with a warning belt, wherein the warning belt can be set to be red, and characters are printed on the warning belt before taking off, so that tools are prevented from being left on the airplane, and a warning effect is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a main wheel fairing and an inflation nozzle on the outer side of a main landing gear of a Boeing 737NG aircraft.
In the figure, 1-a leakage-proof sheet, 2-a reinforcing ring, 3-a warning belt, 4-an inflation nozzle, 5-a main wheel hub, 6-a hub cover and 7-a hub fairing.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the tool for preventing the dust cap of the main wheel of the dismounting Boeing 737NG airplane from accidentally falling comprises a leak-proof sheet 1, a reinforcing ring 2 and a warning tape 3. The reinforcing ring 2 is positioned at the geometric center of the leakage-proof sheet 1, the reinforcing ring 2 is hollow, the inner diameter of the reinforcing ring is matched with the charging connector 4, and the warning belt 3 is connected with the leakage-proof sheet 1. The leakproof sheet 1 is made of flexible material (such as polyester cotton cloth) and is circular or elliptical. The material hardness of the reinforcing ring 2 is larger than that of the leakage-proof sheet 1, and the inner diameter of the reinforcing ring is 1.1 cm. The warning belt 3 is made of flexible materials, the warning belt 3 can be red, and characters of 'taking off before taking off' are printed on the warning belt 3.
The anti-dropping dustproof cap is simple in structure and convenient to operate, a crew can only need to align the reinforcing ring 2 with the inflating nozzle 4 and plug the reinforcing ring into the hollow part of the main wheel hub 5 during operation, the anti-dropping plate 1 forms a protective cover around the inflating nozzle 4 due to the fact that the inner diameter of the reinforcing ring 2 is matched with the inflating nozzle 4, the anti-dropping plate 1 is supported by the anti-dropping plate 1 and cannot fall into the main wheel hub 5 even if the crew rotates the dustproof cap improperly, the material hardness of the reinforcing ring 2 is larger than that of the anti-dropping plate 1, and the crew can conveniently sleeve the anti-dropping plate 1 on the inflating nozzle 4.
Claims (5)
1. The utility model provides a instrument for preventing unexpected dropping of dismouting boeing 737NG aircraft main wheel dust cap which characterized in that, includes leak protection piece (1) and reinforcing ring (2), reinforcing ring (2) are located the geometric centre position of leak protection piece (1), reinforcing ring (2) cavity, its internal diameter and charging connector (4) adaptation.
2. The tool for preventing the dust cap of the main wheel of the demountable Boeing 737NG aircraft according to claim 1, wherein the leak-proof sheet (1) is made of flexible material and has a circular or oval shape.
3. The tool for preventing the dust cap of the main wheel of the demountable Boeing 737NG aircraft from accidentally falling off according to claim 2, wherein the material hardness of the reinforcing ring (2) is greater than that of the leak-proof sheet (1), and the inner diameter of the reinforcing ring is 1.1 cm.
4. The tool for preventing the dust cap of the main wheel of the dismounting Boeing 737NG aircraft from accidentally falling off according to claim 1, 2 or 3, further comprising a warning tape (3), wherein the warning tape (3) is connected with the leakage-proof sheet (1).
5. The tool for preventing the accidental falling of the dust cap of the main wheel of the demountable Boeing 737NG aircraft according to claim 4, wherein the warning band (3) is made of a flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468212.8U CN215850569U (en) | 2021-03-04 | 2021-03-04 | Tool for preventing main wheel dustproof cap of dismounting Boeing 737NG airplane from accidentally dropping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468212.8U CN215850569U (en) | 2021-03-04 | 2021-03-04 | Tool for preventing main wheel dustproof cap of dismounting Boeing 737NG airplane from accidentally dropping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215850569U true CN215850569U (en) | 2022-02-18 |
Family
ID=80317459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120468212.8U Active CN215850569U (en) | 2021-03-04 | 2021-03-04 | Tool for preventing main wheel dustproof cap of dismounting Boeing 737NG airplane from accidentally dropping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215850569U (en) |
-
2021
- 2021-03-04 CN CN202120468212.8U patent/CN215850569U/en active Active
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