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Airplane APU rear bearing cavity maintaining tool

A rear bearing and aircraft technology, applied in aircraft maintenance and other directions, can solve problems affecting the work efficiency of maintenance workshops, and achieve the effects of invention promotion and social benefits, reducing the number of repairs, and improving efficiency

Pending Publication Date: 2019-02-22
中国南方航空股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Seriously affect the efficiency of the maintenance workshop

Method used

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  • Airplane APU rear bearing cavity maintaining tool
  • Airplane APU rear bearing cavity maintaining tool
  • Airplane APU rear bearing cavity maintaining tool

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Embodiment Construction

[0020] An aircraft APU rear bearing cavity maintenance tool, which is suitable for the maintenance of the rear bearing cavity on the 131-9 type APU applicable to Boeing 737 series and Airbus A320 series aircraft, such as figure 1 -3 shown. The front end face of the rear bearing chamber 7 on the APU of this series of aircraft has a flange flange 8, and the flange flange 8 is evenly provided with bolt holes distributed along the ring, and the rear end face of the rear bearing chamber 7 is provided with bolt holes along the ring. Distributed bolt holes, the bolt holes are self-locking threaded sleeve installation holes 9, and self-locking threaded sleeves with latches are installed in the bolt holes. The maintenance tooling includes a base that can be fixedly connected with the bench drill, and one plane of the base is used for detachable connection with the end face of the flange flange 8 of the rear bearing cavity 7 . The flange flange 8 is also the non-maintenance end.

[00...

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Abstract

The invention discloses an airplane APU rear bearing cavity maintaining tool for airplanes of the Boeing 737 series, the Airbus A320 series and the like. A flange protruding edge is arranged on the front end face of a rear bearing cavity in an APU of the series of airplane and evenly provided with bolt holes distributed along the circular ring. The rear end face of the rear bearing cavity is provided with bolt holes distributed along the circular ring. The bolt holes in the rear end face are internally provided with self-locking threaded sleeves with bolts. The maintaining tool comprises a base capable of being fixedly connected with a bench drill. One plane of the base is used for being detachably connected with the not-to-be-maintained end of the rear bearing cavity, namely the end faceof the flange protruding edge. According to the provided maintaining tool, the rear bearing cavity can be subjected to drilling machining after the rear bearing cavity is fixed to the bench drill, andthe maintaining efficiency is improved.

Description

technical field [0001] The invention relates to a maintenance tool, in particular to an aircraft APU rear bearing cavity maintenance tool. Background technique [0002] The auxiliary power unit is a power unit on the aircraft other than the main engine. The English name is Auxiliary Power Unit, referred to as APU. Its function is to independently provide power and air source for the aircraft, and it is also used to provide additional thrust. Both Boeing 737 series aircraft and Airbus A320 series aircraft are equipped with a type 131-9 auxiliary power unit. One of the important components of this device is called the rear bearing chamber, which serves as the rear cover of the APU to support the rear bearing. It is used for lubrication and cooling of lubricating oil at the same time, and provides a closed space. The structure of the rear bearing cavity is as follows figure 1 As shown in -2, it is conical as a whole, the front end is a circular flange surface, the flange surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/40
CPCB64F5/40
Inventor 李海峰董仲伸徐长青宋巍
Owner 中国南方航空股份有限公司
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