SF
37
3) Nykiminen:
Myös tämä ongelma johtuu huonosta voitelusta.
TIRFOR-laite pitäävoidella kunnolla.
4) Jumittuminen:
Jos vaijeri jää kiinni laitteeseen, se johtuu yleensä
siitä, että vioittunut vaijerinkohta on tarttunut leukoihin.
Laitteen käyttäminen tulee keskeyttää välittömästi. Toisen
laitteen pitää ottaa taakka kannettavaksi eri vaijerin avulla
tai tulee käyttää jotain muuta keinoa pitäen samalla
mielessä kaikki turvallisuustoimenpiteet. Kun jumittunut
laite ei enää kannata taakkaa, vaurioitunut vaijeri täytyy
irrottaa ja poistaa. Jos se ei ole mahdollista, palauta laite
ja vaijeri valmistajalle tai valtuutetulle korjaajalle.
14. TERVEYS JA TYÖTURVALLISUUS
Kaikki nostotyövälineet tulee varustaa, huoltaa ja testata voimassa olevien terveys- ja
työturvallisuusmääräysten mukaisesti, ja sama periaate koskee niiden käyttöä.
Jokainen yritys on velvollinen pitämään huolen siitä, että sen työntekijät on koulutettu
perusteellisesti laitteiden turvallisen käytön varmistamiseksi.
1. DESCRIPTION OF EQUIPMENT
The TIRFOR machine is a hand-operated lifting and
pulling machine. It is versatile, portable and multi-
purpose, not only for pulling and lifting but also for
lowering, tensioning and guying.
The originality of the TIRFOR machine is the
principle of operation directly on the wire rope which
passes through the mechanism rather than being reeled
onto a drum of a hoist or conventional winch. The pull
is applied by means of two pairs of self-energised jaws
which exert a grip on the wire rope in proportion to the
load being lifted or pulled. A telescopic operating lever
fitted to either the forward or the reverse lever transmits
the effort to the jaw mechanism to give forward or
reverse movement of the wire rope.
The machine is fitted with a hook or anchor pin,
depending on the model, so that it can be secured
quickly to any suitable anchor point.
TIRFOR machines, intended for lifting and pulling
materials, are available in two ranges each with three
models of different capacities:
– T-500D range for light duty applications (with safety
release catch)
– TU range for heavy duty applications (with safety
release catch).
Each machine is supplied with a telescopic operating
handle, and usually with a 20 m standard length of
special TIRFOR wire rope fitted with a safety hook and
wound onto a metal reeler. Longer or shorter lengths of
wire rope are available on request.
This manual together with a guarantee card are
supplied with each machine, as well as the CE
declaration of conformity.
IMPORTANT: TIRFOR wire rope has been specially
designed to meet the particular requirements of the
TIRFOR machine. The manufacturer does not
guarantee the safe operation of machines used with
wire rope other than TIRFOR wire rope.
2. RIGGING ARRANGEMENTS
Various ways of rigging are shown in Figs. 2.1, 2.2,
2.3 and 2.4 p. 38. Figs. 4 and 5 p. 38 show particular
arrangements (one forbidden and the other
recommended).
The machine may be anchored to a fixed point with
the wire rope travelling towards the machine (Figs. 2.1,
2.2, 2.3 p. 38), or travel along the wire rope, with the
load, the wire rope itself anchored to a fixed point
(Fig. 2.4 p. 38).
In example 2.2 p. 38, the maximum working load of
the pulley and the anchor point should be equal to or
greater than twice the load.
N.B. Whatever the rigging arrangement, and if the
machine is anchored directly to a fixed point, ensure that
there are no obstructions around the machine which
could prevent the wire rope, the machine and anchor
from operating in a straight line. It is therefore
recommended to use a sling of an appropriate capacity
between the anchor point and the machine (Fig. 3 p. 38).
WARNING: Any rigging arrangement which
requires the calculation of the forces applied should be
checked by a competent engineer, with special attention
to the appropriate strength of fixed point used.
For work such as guiding the trunk in tree felling, the
operator should ensure that he is outside the danger
area by passing the wire rope around one or more
return pulleys.
The capacity of the machine may be increased
considerably for the same effort by the operator by
using multiple sheave blocks. (See the examples set out
in Figs. 6.1 and 6.2 p. 38).
The increase in the capacity shown is reduced
depending on the efficiency of the pulleys.
The diameter of the pulleys used should be equal to
at least 18 times the diameter of the wire rope. (Refer to
the applicable regulations).
For any rigging arrangement other than those
described in this manual, please consult TRACTEL. or
a competent specialist engineer before operating the
machine .
3. INSTALLATING THE WIRE ROPE
N.B. When handling the wire rope it is recommended
to protect the hands by using work gloves.
If the wire rope is to be anchored to a high anchor point,
the wire rope should be anchored before fitting the
wire rope in the machine.
1. Uncoil the wire rope in a straight line to prevent
loops or kinks.
2. Release the internal mechanism (See section 4:
«Releasing and engaging the jaws»).
3. Insert the wire rope through the rope guide at the
end opposite to the anchor point (hook or anchor pin).
4. Push the wire rope through the machine, and if
necessary, helping it by operating the forward operating
lever.
5. When the wire rope appears through the anchor
point, pull the slack wire rope through the machine, to
the point required.
6.
Engage the jaws by operating the rope release
mechanism (See section 4: «Releasing and engaging the
jaws»).
