77
Mtrac endless winch
2.7 Information on remaining risks
Remaining risks exist which cannot be covered by the
design of Yale endless winches:
• Since the optional overload switch-off is normally set to the maximum
load capacity of the winch in the factory, the operating company must
check, if the useful load of the lifting tackle also corresponds to the
value of the overload switch-off and/or to the useful load of the winch.
If this check shows that a lower value is required, the overload switch-off
must be adjusted accordingly, either ex-works or by a trained person
or the specified useful load of the winch must be reduced.
• If no Yale safety lock is fitted on an additional safety rope, a failure of
the winch or a broken rope may result in dropping of the load.
3. Putting the winch into service
3.1 Basic principles
The operating company is responsible for ensuring that the suspension
structure for the winch and the lifting tackle comply with all relevant
regulations.
3.2 Necessary components
• Yale endless winch(es) with appropriate useful load;
• Original Yale rope(s) with an appropriate length
• Connection cable with an appropriate length
• If necessary, rope sheave(s) with an appropriate useful load for return-
ing/reeving the rope (not included in the scope of supply).
3.3 Fixing of the Yale endless winch
A) Mounting material
Yale endless winches of the YMT-M series can either be fixed with two
M10 bolts (for the double-shear connection use two of the four boreholes
dia. D that are not diagonally arranged!), with four M10 bolts (for the
single-shear connection use all four boreholes dia. D) or with one M16
bolt (use borehole dia. C!) and by applying self-locking nuts.
Bolts must be long enough so that they only carry by the barrel and
never by the thread (use spacers if necessary).
The strength class must be at least 8.8. Higher strength classes (10.9
and in particular 12.9) should not be used since these bolts, especially
the galvanized version, tend to become brittle.
Instead of the M10 bolts, studs or similar with at least the same strength
may also be used.
A load bolt with a dia. of 16 mm is included in the scope of supply of
every winch.
B) Fixing of the Yale endless winch
Fix Yale endless winches in such a way that the loaded
suspension rope always enters the winch vertically from
all directions!
We recommend that Yale Industrial Products be contacted for planning the
fastening arrangement of the winch, as required.
In any case the structure for suspending the suspension rope as well as the
component on which the winch is fixed must have
at least 2.5 times the
load capacity
(lasting deformation not permissible) compared with the useful
load of the winch in order to meet the requirements of standard EN14492-1.
Содержание Mtrac YMT-M Series
Страница 18: ...18 18 Mtrac endless winch ...
Страница 19: ...19 19 Mtrac endless winch ...