Helicopter tail reducer fuel filler plug

Abstract

The invention relates to a plug for oil fillers of tail gearboxes in helicopters. The plug comprises a plug body, a filter and a blind plug. The blind plug is disposed on in the hollow of the top of the plug body. The plug body is provided with an air hole communicated with the outside. The plug body is provided with the filter corresponding to the air hole. The plug body is provided with an outer step. A waterproof cover covering the air hole is arranged outside the plug body and effectively prevents sea water from entering a tail gearbox from the air hole. The large-diameter portion of the plug body axially extends, so that the axial size of the inner hollow of the plug body is enlarged and the larger-thickness blind plug can be disposed. A permeation path is extended, so that the sea water is effectively prevented from permeating to the tail gearbox from an oil filler cap. A lock screw effectively prevents rotation and falling of the waterproof cover. Therefore, the plug well prevents the sea water from entering the tail gearbox and prevents lubricating oil from being polluted.

Description

technical field [0001] The invention relates to a fuel filler plug for a reducer, in particular to a fuel filler plug for a helicopter tail reducer. Background technique [0002] At present, most of the helicopter tail reducers in our country are land-use, including the helicopter tail reducers imported from abroad are also land-use. Among them, the plug originally installed on the fuel port of the tail reducer is exposed, and at the same time, in order to prevent the air pressure inside and outside the tail reducer from being consistent, a vent hole is set on the plug of the fuel port. With the expansion of the application field of helicopters, various new requirements are put forward for the various components of the helicopter tail reducer. When the tail reducer is used on a carrier-based aircraft, seawater will enter the tail reducer through the vent hole in the marine environment, causing oil pollution. The top of the fuel filler plug accumulates seawater, which infil...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of helicopter tail reducer fuel filler plug with better seawater protection function, this kind of filler filler plug can effectively solve the problem of seawater pollution lubricating oil when the helicopter tail reducer works in the marine environment. Prevent seawater from entering the tail reducer and avoid contamination of lubricating oil

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