CN210062667U

CN210062667U - Embedded flap oil tank

Info

Publication number: CN210062667U
Application number: CN201920317171.5U
Authority: CN
Inventors: 高原; 唐克兵; 赖辉; 庞小强; 刘海; 杜发喜
Original assignee: Chengdu Aircraft Industrial Group Co Ltd
Current assignee: Chengdu Aircraft Industrial Group Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-02-14
Anticipated expiration: 2029-03-13

Abstract

The utility model discloses an embedded flap oil tank, including flap, sealed cushion, covering, A hinge, B hinge and poker. The cover cap, the sealing rubber pad and the skin are connected and compressed through bolts, the hinge A is fixedly installed on the cover cap, the hinge B is fixedly installed on the inner side of the skin, and the hinge A and the hinge B are connected through a poker. After the fuel tank loads fuel, the cover cap is embedded in the fuel tank, the cover cap, the sealing rubber gasket and the skin are attached more closely, and the sealing performance of the fuel tank port cap sealing device is obviously improved.

Description

Embedded flap oil tank

Technical Field

The utility model belongs to the aircraft structure field relates to an oil tank port lid sealing device.

Technical Field

The integral fuel tank of the airplane needs to be provided with a cover cap due to the installation and maintenance requirements. The existing aircraft usually makes subsidence on the outer side of skin, and flap and sealed cushion are installed in the skin subsidence, and the flap exerts the packing force through the connecting bolt, makes the sealed cushion compression deformation to realize the sealed of oil tank. After fuel is loaded in the structural form, the opening cover is subjected to outward oil pressure to drive the bolt to be pulled, the compression amount of the sealing rubber pad is reduced, and a gap is easily formed between the sealing rubber pad and the opening cover, so that oil leakage is caused. And in order to control the compression amount of the sealing rubber gasket, more bolts are generally arranged to improve the sealing reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a whole fuel tank flap sealing device of aircraft that sealing performance is good, maintainability is good, structural style is simple.

In order to achieve the above object, the utility model adopts the following technical scheme:

an embedded type cover oil tank comprises a cover, a sealing rubber pad, a cover, an A hinge, a B hinge and a poker; the hinge A is fixedly arranged on the opening cover, the hinge B is fixedly arranged on the inner side of the skin, and the hinge A and the hinge B are connected through a poker; the cover is positioned on the inner side of the oil tank; the flap and the skin are connected by bolts,

and a sealing rubber gasket is arranged between the cover cap and the skin.

The cover is provided with a sunken part, and the sunken part is connected and compressed through a sealing rubber mat and the cover.

The utility model has the advantages that after the fuel tank is loaded with fuel, the covering cap, the sealing rubber pad and the covering skin are more closely attached, so that the sealing performance is good, the structural form is simple and the weight is light; due to the improvement of the sealing performance, the using amount of bolts can be reduced, and therefore, the maintainability of the airplane is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view from a-a of fig. 1.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the utility model discloses an oil tank port cover sealing device, the device include flap 1, sealed cushion 2, covering 3, a hinge 4, B hinge 5 and poker 6. The flap 1 is made sunken, the sunken part is tightly pressed through bolted connection with the sealing rubber mat 2 and the skin 3, the A hinge 4 is fixedly installed on the flap 1, the B hinge 5 is fixedly installed on the skin, and the A hinge 4 is connected with the B hinge 5 through the poker 6.

After the oil tank loaded the fuel, the flap embedded in with the oil tank, the fuel produced outside pressure to the flap, made flap 1, sealed cushion 2 and covering 3 closely laminate more, increased the compressive capacity of sealed cushion 2 to the sealing performance of oil tank has been improved.

When opening the flap, dismantle the bolt on flap 1, with flap 1 inwards push away, flap 1 is around 6 internal rotations of poker under the drive of hinge 4 promptly, has avoided in the bolt dismantles back flap 1 falls into the oil tank.

Claims

1. An embedded type cover oil tank is characterized by comprising a cover, a sealing rubber pad, a skin, a hinge A, a hinge B and a poker; the hinge A is fixedly arranged on the opening cover, the hinge B is fixedly arranged on the inner side of the skin, and the hinge A and the hinge B are connected through a poker; the cover is positioned on the inner side of the oil tank; the cover cap is connected with the skin through a bolt, and a sealing rubber pad is arranged between the cover cap and the skin.

2. The in-line port cap fuel tank of claim 1, wherein the port cap is provided with a depression that is compressed by the seal cushion and skin connection.