Search

CN-224203753-U - Simulation teaching aid for braking fan of main wheel of airplane

CN224203753UCN 224203753 UCN224203753 UCN 224203753UCN-224203753-U

Abstract

The utility model discloses an airplane main wheel braking fan simulation teaching aid which comprises a fan motor simulation piece, a spline shaft, a fan impeller, a protection cover mounting bracket, a fan protection cover and a dust cover, wherein a motor rotating shaft is rotatably arranged at the front end of the fan motor simulation piece, an axle center hole is formed in the motor rotating shaft, the spline shaft is rotatably arranged in the fan motor simulation piece and penetrates out of the axle center hole of the motor rotating shaft, a spline part is arranged at the front end of the spline shaft, the fan impeller is coaxially fixed at the front end of the motor rotating shaft, the fan protection cover is covered outside the fan impeller and is fixed on the protection cover mounting bracket, a spline sleeve is arranged at the rear side of the center of the fan protection cover, the spline part at the front end of the spline shaft is spliced and matched in the spline sleeve, and the dust cover is arranged outside the protection cover mounting bracket and is fixed on the protection cover mounting bracket. The utility model solves the problems of incomplete disassembly and assembly exercise process and huge cost of using available aviation materials as teaching aids caused by the lack of a brake fan on a main wheel aircraft teaching aid.

Inventors

  • SHEN YUAN
  • KONG XUELI
  • JIANG JINGTAO

Assignees

  • 春秋航空技术发展江苏有限公司

Dates

Publication Date
20260505
Application Date
20250513

Claims (10)

  1. 1. Aircraft main wheel brake fan simulation teaching aid, its characterized in that includes: The fan motor simulation piece is used for being fixed on a wheel shaft of the main wheel, the front end of the fan motor simulation piece is rotatably provided with a motor rotating shaft, and an axle center hole is formed in the motor rotating shaft; The spline shaft is rotatably arranged in the fan motor simulation piece and penetrates out of the shaft center hole of the motor rotating shaft, and the front end of the spline shaft is provided with a spline part; The fan impeller is coaxially fixed at the front end of the motor rotating shaft; The protective cover mounting bracket is used for being fixed on the hub of the main wheel; The fan protection cover is covered outside the fan impeller and fixed on the protection cover mounting bracket, a spline sleeve is arranged at the rear side of the center of the fan protection cover, and a spline part at the front end of the spline shaft is inserted and matched in the spline sleeve; The dustproof cover is arranged outside the protective cover mounting bracket and is fixed on the protective cover mounting bracket.
  2. 2. The aircraft main wheel brake fan simulation teaching aid according to claim 1, The front end of the fan motor simulation piece is provided with a rotating shaft mounting groove, the rear end of the motor rotating shaft is mounted in the rotating shaft mounting groove through a first bearing, a first limiting part which is positioned at the front side of the first bearing and is adapted to the rotating shaft mounting groove is arranged outside the motor rotating shaft, and a limiting ring which is sleeved outside the motor rotating shaft and is limited at the front side of the first limiting part is arranged at the front end of the fan motor simulation piece through a screw.
  3. 3. The aircraft main wheel brake fan simulation teaching aid according to claim 1, The fan motor simulation piece is internally provided with an axially penetrating spline shaft hole, the rear end of the spline shaft hole is provided with a limit groove, the spline shaft is matched in the spline shaft hole and is installed in the limit groove through a second bearing, the rear end of the spline shaft is provided with a second limit part matched in the limit groove, and the rear end of the fan motor simulation piece is provided with a rear cover which is blocked outside the limit groove through screw fixation.
  4. 4. The aircraft main wheel brake fan simulation teaching aid according to claim 3, The spline shaft comprises a rear shaft rod which is fit in the spline shaft hole and a front shaft rod which extends out of the front end of the fan motor simulation piece, and the rear shaft rod and the front shaft rod are in threaded butt joint.
  5. 5. The aircraft main wheel brake fan simulation teaching aid according to claim 1, The front end of the motor rotating shaft is provided with a connecting part, the rear end of the connecting part forms an annular step surface, the front end of the connecting part is provided with a threaded connecting part, the fan impeller is sleeved outside the connecting part and props against the front side of the annular step surface, an impeller fixing nut is screwed on the threaded connecting part, and an impeller gasket is arranged between the impeller fixing nut and the fan impeller.
  6. 6. The aircraft main wheel brake fan simulation teaching aid according to claim 1, The front end of spline housing is equipped with first connection piece, the front side of fan safety cover is equipped with the second connection piece, pass through rivet fixation between first connection piece, fan safety cover and the second connection piece.
  7. 7. The aircraft main wheel brake fan simulation teaching aid according to claim 1, The protection cover mounting bracket comprises an inner ring part, an outer ring part and a plurality of spokes connected between the inner ring part and the outer ring part, wherein the inner ring part is used for being fixed on a hub of a main wheel through a clamp, and the outer ring part, the fan protection cover and the dust cover are fixedly connected through bolts.
  8. 8. The aircraft main wheel brake fan simulation teaching aid according to claim 7, The thickness of the spoke is 2mm.
  9. 9. The aircraft main wheel brake fan simulation teaching aid according to claim 7, The inner ring part is of an integrated structure.
  10. 10. The aircraft main wheel brake fan simulation teaching aid according to any of claims 1-9, The fan motor simulation piece and the fan impeller are made of aluminum alloy, and the motor rotating shaft, the spline shaft, the protective cover mounting bracket, the fan protective cover and the dust cover are made of stainless steel.

Description

Simulation teaching aid for braking fan of main wheel of airplane Technical Field The utility model relates to the technical field of aerospace training, in particular to an airplane main wheel braking fan simulation teaching aid. Background The aircraft maintenance training relies on a matched teaching aid, and the maintenance teaching aid generally adopts scrapped aircraft parts detached from the aircraft. A320 aircraft main wheel replacement is one of the most common projects for aircraft maintenance, and is also a project which maintenance personnel must be skilled in grasping, and the disassembly and assembly of the brake fan is a main procedure for main wheel replacement. However, although the brake fan belongs to an accessory part on the main wheel, the damaged part can be reused after being returned to a factory for maintenance, and the scrapping is very small. The aircraft parts generally adopt light aluminum alloy, and along with a large amount of dismouting of scholars, the part structure is very easy to damage, and teaching aid belongs to the consumable. If the available aviation materials are directly purchased to be used as teaching aids, the cost is huge. Therefore, most of the aircraft maintenance training institutions and unit main wheel teaching aids in civil aviation are not provided with brake fans at present. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides an airplane main wheel braking fan simulation teaching aid to solve the problems of incomplete disassembly and assembly exercise process caused by the lack of a braking fan on a main wheel airplane teaching aid and huge cost of using available aviation materials as the teaching aid. The utility model provides an aircraft main wheel braking fan simulation teaching aid, which comprises: The fan motor simulation piece is used for being fixed on a wheel shaft of the main wheel, the front end of the fan motor simulation piece is rotatably provided with a motor rotating shaft, and an axle center hole is formed in the motor rotating shaft; The spline shaft is rotatably arranged in the fan motor simulation piece and penetrates out of the shaft center hole of the motor rotating shaft, and the front end of the spline shaft is provided with a spline part; The fan impeller is coaxially fixed at the front end of the motor rotating shaft; The protective cover mounting bracket is used for being fixed on the hub of the main wheel; The fan protection cover is covered outside the fan impeller and fixed on the protection cover mounting bracket, a spline sleeve is arranged at the rear side of the center of the fan protection cover, and a spline part at the front end of the spline shaft is inserted and matched in the spline sleeve; The dustproof cover is arranged outside the protective cover mounting bracket and is fixed on the protective cover mounting bracket. Further, the front end of the fan motor simulation piece is provided with a rotating shaft mounting groove, the rear end of the motor rotating shaft is mounted in the rotating shaft mounting groove through a first bearing, a first limiting part which is positioned at the front side of the first bearing and is adapted in the rotating shaft mounting groove is arranged outside the motor rotating shaft, and a limiting ring which is sleeved outside the motor rotating shaft and is limited at the front side of the first limiting part is arranged at the front end of the fan motor simulation piece through a screw. Further, be equipped with the axial spline shaft hole that runs through in the fan motor simulation spare, the rear end in spline shaft hole is equipped with the spacing groove, the integral key shaft adaptation is in the spline shaft hole and install through the second bearing in the spacing groove, the rear end of integral key shaft be equipped with the adaptation in the second spacing portion in the spacing groove, the rear end of fan motor simulation spare is equipped with the back lid that has the shutoff outside the spacing groove through the screw fixation. Further, the spline shaft comprises a rear shaft rod which is fit in the spline shaft hole and a front shaft rod which extends out of the front end of the fan motor simulation piece, and the rear shaft rod and the front shaft rod are in threaded butt joint. Further, the front end of the motor rotating shaft is provided with a connecting part, the rear end of the connecting part forms an annular step surface, the front end of the connecting part is provided with a threaded connecting part, the fan impeller is sleeved outside the connecting part and abuts against the front side of the annular step surface, an impeller fixing nut is screwed on the threaded connecting part, and an impeller gasket is arranged between the impeller fixing nut and the fan impeller. Further, the front end of the spline housing is provided with a first connecting sheet, the front side of the fan protecting cover is p