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Joint assembly

A technology for connecting components and components, applied in the direction of connecting components, thin plate connections, threaded fasteners, etc., can solve problems such as unsatisfactory

Inactive Publication Date: 2012-08-29
ROLLS ROYCE PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional connection assemblies using collars are not ideal

Method used

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Examples

Experimental program
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Embodiment Construction

[0040] Such as figure 1 As shown, the turbofan gas turbine engine 10 includes an inlet 12, a fan section 14, a compressor section 16, a combustion section 18, a turbine section 20, and a discharge section 22 in the sequence of the flow. The turbine section 20 includes one or more turbines arranged to drive one or more compressors in the compressor section 16 through a shaft (not shown). The turbine section 20 also includes a turbine arranged to drive a fan in the fan section 14 through a shaft (not shown). The fan section 14 includes a fan duct 24 partially defined by a fan housing 26. The fan duct 24 has an inlet 12 at its axial upstream end and an outlet 28 at its axial downstream end. The fan housing 26 is fixed to the central engine housing 36 by a plurality of fan outlet guide blades 30 extending radially. The fan housing 26 surrounds the fan rotor 32 which carries a plurality of circumferentially spaced radially extending fan blades 34. The fan rotor 32 and the fan bla...

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PUM

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Abstract

A joint assembly for securing flanges of two casings comprising a plurality of bolts, a plurality of collars and a plurality of nuts. Each bolt extends through an aperture in the first flange and an aperture in the second flange, each collar being arranged around a shank of a respective bolt and each nut being secured on a respective one of the bolts. Each collar being arranged between one of the flanges and a nut or a head of a bolt. Each collar comprises a first member and a second member, the second member being arranged at a first end of the first member. The second member being substantially U-shaped in cross-section, the second member having first and second radially inner ends and a radially outer mid portion and an axial space is defined between the first radially inner end and the second radially inner end of the second member.

Description

Technical field [0001] The present invention relates to a connecting assembly, in particular to a connecting assembly for a gas turbine engine, and more particularly to a connecting assembly for connecting a blade containing shell of a gas turbine engine to another adjacent shell . Background technique [0002] Nuts and bolts are often used to connect the fan housing and fan inlet duct of a turbofan gas turbine engine together, wherein the bolts are arranged to pass axially through holes in an annular radially extending flange that is in the fan housing. Body and the abutting end of the fan inlet duct. [0003] If the flange is designed to withstand heavy dynamic loads, it is customary to have each bolt extend and surround the rod of each bolt and between the head of the corresponding bolt and one of the flange or between the corresponding nut and flange. A cylindrical collar is set between. This increases the effective length of the bolt before the bolt fails and therefore incr...

Claims

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Application Information

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IPC IPC(8): F02C7/32
CPCF05D2260/38F01D21/04F01D21/045F01D25/24F01D25/246F16B5/0241F02C7/05F16B39/24F01D25/243F16B2200/506
Inventor J.M.里德
Owner ROLLS ROYCE PLC