All proximity switches in the cargo door with a separate electronic system have a target and a sensor.
The proximity switch 28WV monitors the position of the locking handle. The sensor is attached at FR27 and the target is installed in the end of the locking handle.
The proximity switch 30WV monitors the position of the cargo door. The sensor is installed in the door sill area near FR25 and the target is attached on the target lever (part of the switch mechanism).
These two proximity switches sends information to the ECAM system when the cargo door is closed or opened (Ref. 52-71-00).
1EFF : ALL 1 52-31-00Page 17 1 1 Aug 01/05 1 1 1CES 1 The proximity switch 5MJ is included in the door control system (Ref. 52-35-00). The sensor is installed on the beam 4 of the door structure and the target is installed on the control lever. This switch prevents the hydraulic operation of the cargo door if both the parts are not in line.
**ON A/C ALL
E. Door Seal
The door seal made of silicone rubber integrated with fabric is a round hose-type seal with inflation holes. The door seal is installed in the retainers so that the inflation holes show to the inner side of the cargo compartment. When the cargo door is in the closed position, the door seal comes into contact with the fuselage profile. Due to the higher internal pressure of the cargo compartment during the flight, the door seal is inflated via the inflation holes so that the cargo compartment is sealed air-tight.
R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
F. Cargo Door Mechanism
**ON A/C 001-049, 053-099, 101-105, 151-199, 201-220,
(Ref. Fig. 004)
R **ON A/C 106-149, 221-299, 301-399, 401-499,
(Ref. Fig. 004B, 005A)
**ON A/C 001-049, 053-099, 101-105, 151-199, 201-220,
(Ref. Fig. 006)
R **ON A/C 106-149, 221-299, 301-399, 401-499,
(Ref. Fig. 006B)
1EFF : ALL 1 52-31-00Page 18 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
The cargo door mechanism includes the subsequent components:
-
the door handle mechanism with the handle flap
-
the latching mechanism with the interlock mechanism,
-
the locking mechanism with the vent door and related mechanism,
-
the drift pin mechanism,
-
the switch mechanism.
**ON A/C 051-052,
F. Cargo Door Mechanism
(Ref. Fig. 004A, 005, 006A)
The cargo door mechanism includes the subsequent components:
-
the locking handle with flap mechanism,
-
the locking mechanism with interlock mechanism,
-
the safety mechanism with vent door and related mechanism,
-
the drift pin mechanism,
-
the switch mechanism.
R **ON A/C 001-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
(1) Door Handle Mechanism
The door handle mechanism is installed between FR27 and FR27A to latch/unlatch and lock/unlock the cargo door. Parts of the door handle mechanism are the door handle, the Maltese-cross assembly, the linkage mechanism and the handle spring. The door handle mechanism operates the locking mechanism when the the door handle is pulled up to the 65 degree position. When the door handle is lifted to the 128 degree position, the door handle mechanism operates the latching mechanism. The Maltese-cross assembly transmit the different movement sequence steps of the door handle as follows:
-
the Maltese-cross lock operates the locking shaft via the linkage mechanism,
-
the Maltese-cross latch operates the lachting shaft via the connection rod.
The gas spring assembly makes sure that the linkage mechanism stays in a overcenter position when the door handle is in the 65 degree position. The handle spring keeps the door handle in its fully lifted position and vice versa when the door handle is moved into its recess.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM DOORS 舱门4(21)
