Wear sleeve-transducer combination for aircraft landing gear
阅读：518发布：2024-01-20
专利汇可以提供Wear sleeve-transducer combination for aircraft landing gear专利检索，专利查询，专利分析的服务。并且A brake sleeve protecting an aircraft landing gear axle from brake collar wear is prevented from adversely affecting distributions of forces sensed by an inside-axle strain gage transducer by being split into a pair of end-to-end, substantially tubular sleeve parts fitted on the axle with certain clearance and having a semi-annular gap formed therebetween above the neutral axis of the axle, whereby pivotal movements of the sleeve parts relative to one other are accommodated about a transverse horizontal axis at or below the neutral axis and measurement-disturbing mechanical interferences between the sleeve and the axis are minimized.，下面是Wear sleeve-transducer combination for aircraft landing gear专利的具体信息内容。
1. A sleeve arrangement for protecting an aircraft landing gear axle assembly from damage and from deflection-characteristic instability along an axle length where strain gage means responds to axle deflections to measure weight supported by the axle, comprising at least a pair of substantially tubular sleeve parts disposed about said axle in substantially end-to-end abutting relation with one another, said parts being substantially fixed in relation to said axle at axially-spaced positions therealong, at least one of said sleeve parts including pivot means at one end thereof in engagement with the other of said parts to produce said abutting relation therebetween at positions on opposite sides of said axle which are not above the neutral axis of the axle assembly, the ends of said sleeve parts being axially spaced apart above said positions, whereby upon upward deflection of said axle assembly due to loading said sleeve parts pivot relative to one another about said pivot means.
2. A sleeve arrangement as set forth in claim 1 wherein at least one of said parts is substantially fixed in relation to said axle at a position axially spaced from the other of said parts and is of larger diameter than and radially spaced from said axle at other positions.
3. A sleeve arrangement as set forth in claim 2 wherein said sleeve parts are shrink-fitted into said substantially fixed relation to said axle, and wherein said axially-spaced positions at which said parts are fixed in relation to said axle span the axle length where the strain gage means responds to the axle deflections.
4. A sleeve arrangement as set forth in claim 1 wherein said pivot means are in said abutting relation in substantially the same horizontal plane, and wherein said pivot means are formed integrally with an end of said one of said sleeve parts.
5. A sleeve arrangement as set forth in claim 4 wherein said pivot means extend axially from said end of one of said sleeve parts into said abutting relation with the other of said sleevE parts, and wherein said neutral axis lies substantially in said horizontal plane.
6. A brake sleeve arrangement for protecting a hollow aircraft landing gear axle from brake collar wear and from deflection-characteristic instability along an axle length where an inside-axle strain gage transducer is mounted to respond to axle deflections to measure weight supported by the axle, comprising a pair of tubular wear sleeve parts surrounding said axle in substantially end-to-end abutting relation with one another, said parts being tightly fitted in relation to said axle at axially spaced-apart positions spanning said length of said axle and between inside surfaces of said brake collar and outside surfaces of said axle, at least one of the abutting ends of one of said sleeve parts being in the form of a semi-annular extension of said one of said sleeve parts disposed below the neutral axis of said axle, whereby a semi-annular gap normally exists between the abutting ends of said sleeve parts and, upon upward deflection of said axle due to loading, said sleeve parts are free to pivot relative to one another.
7. A brake sleeve arrangement as set forth in claim 6 wherein said tubular wear sleeve parts are substantially of right cylindrical form, and wherein said semi-annular extension is formed by providing said semi-annular gap at said one of the abutting ends of said one of said sleeve parts.
8. A brake sleeve arrangement as set forth in claim 7 wherein at least one of said sleeve parts is of larger inside diameter than and normally radially spaced from the outside of said axle at positions axially displaced from that at which it is tightly fitted in relation to said axle.
9. A brake sleeve arrangement as set forth in claim 8 wherein one of said sleeve parts is axially longer than the other, wherein the arcuate ends of said semi-annular extension are disposed in substantially the same horizontal plane, and wherein said neutral axis lies substantially in said horizontal plane.
10. In an aircraft landing gear assembly having an axle supported within a truck beam and secured at one end to a wheel, and a brake collar disposed about said axle between said truck beam and said wheel, the improvement comprising a first tubular wear sleeve part tightly fitted on said axle between said brake collar and said axle, a second substantially tubular wear sleeve part tightly fitted on said axle between said brake collar and said axle, said second tubular sleeve part having a semi-annular extension on one end thereof providing a semi-annular end face in abutting relation to the end face of said first tubular sleeve part, said extension curving below the neutral axis of said axle and thereby leaving a relatively narrow gap between said first and second tubular sleeve parts above said neutral axis, the arcuate end portions of said semi-annular extension serving as fulcrums for pivotal movement of said sleeve parts relative to one another about a substantially horizontal line transverse to the neutral axis of said axle.
11. In an aircraft landing gear assembly as set forth in claim 10, the improvement wherein said second tubular sleeve part is longer than said first sleeve part and has an inside diameter at one end thereof which is substantially the same as the outside diameter of said axle for being tightly engaged therewith, and which at the other end thereof having said extension thereon is of a greater diameter affording a radial spacing from said axle.
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