Справочник Пользователя для Bombardier Transportation JGA29001-6
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Filename: JGA29001-6UserMan.docx
Page 13 of 15
1DOC-1001388
2.5.3 Attachment of transponder to crossties
There are 8 attachment holes in the transponder to be chosen and used depending
of the mounting method. Usually 4 holes are used.
of the mounting method. Usually 4 holes are used.
Dimensions and type of the fastening screws are chosen according to local
requirements. The recommended dimension is between 10 and 14 mm in
diameter. The screws shall as an anti-rust protection at least have a hot zinc-
coating.
requirements. The recommended dimension is between 10 and 14 mm in
diameter. The screws shall as an anti-rust protection at least have a hot zinc-
coating.
The mounting surface on the crosstie must be plane. If it is not plane it is a big
risk for bending the transponder when mounting it. This will sooner or later lead
to a failure in the transponder. If the mounting surface not is plane it is necessary
to smooth it before mounting the transponder, see also chapter 2.5.2.4 about
plane tolerances for the transponder.
risk for bending the transponder when mounting it. This will sooner or later lead
to a failure in the transponder. If the mounting surface not is plane it is necessary
to smooth it before mounting the transponder, see also chapter 2.5.2.4 about
plane tolerances for the transponder.
Between the transponder and the crosstie there must be rubber pads. These
relieve strain when the screws are tightened, and compensate for movements in
the crosstie. The rubber pad should be about 4 mm thick; the degree of hardness
should be about 70° Shore.
relieve strain when the screws are tightened, and compensate for movements in
the crosstie. The rubber pad should be about 4 mm thick; the degree of hardness
should be about 70° Shore.
If it is necessary to adjust the mounting height of the transponder, attach a
compensating spacer between the rubber pad and the crosstie. Such spacers must
be made of non-metallic material.
compensating spacer between the rubber pad and the crosstie. Such spacers must
be made of non-metallic material.
BALISE
RUBBER PAD
SLEEPER
SPACER
CUP WASHER
Max 20 mm
The maximum allowed height above the top surface of the transponder (balise)
for the mounting articles are 20 mm. See figure above (Sleeper = Crosstie).
for the mounting articles are 20 mm. See figure above (Sleeper = Crosstie).
On top of the transponder there must be a washer between the transponder and
the head of the screw. The washer must have a minimum outside diameter of 40
mm. There are two types that may be used:
the head of the screw. The washer must have a minimum outside diameter of 40
mm. There are two types that may be used:
1.
To make it more difficult for unauthorised persons to dismount the
transponder, a cup washer that makes access only for a socket screw wrench to
unscrew the fastening screw can be used. See figure above.
unscrew the fastening screw can be used. See figure above.
2.
A plain washer. See figure below.
PLAIN WASHER