MAN16MG0
5
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
10
2.1.4 Trolley parts (fig. 6)
fig. 6
drhmon6
drhrib6
DRHCARRBITR
1
A
C
D
2
drhmonrot6
B
3
1
1
1
11
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
MAN16MG0
5
A/B/C - Electric trolleys with single girder , types dST/N - S - r
(Normal - Articulated- Lowered)
• They are usually made up of an idler group and a drive wheel assembly, each one fitted with two press-
forged steel wheels produced mechanically and installed on permanently lubricated ball bearings. The
wheels of the drive wheel assembly face each other, fitted with toothed crown and connected together,
in the normal version (N), by a transmission bar. The articulated version (S), is fitted with a double motoredu-
cer, each of which gives movement directly to the wheel. The carrying plates are made of steel and fitted with
antiderailment and antitilting systems (RES. 4.1.2.2 - Attachment I Machine Directive) and with rubber buffers.
The traverse is ensured by one or two self-braking motors with conical induction with progressive
starting and braking at one or two speeds and by one or two offset reducers with helical-toothed gears and
permanent oil-bath lubrication.
A - Electric trolley, normal single girder, type dST/N
• In the normal version the trolley is fitted with circular-section carrying bars that support the hoist by hinge
and pivot suspensions. The driving and idler plates are sliding and adjustable on the bars, in relation to the
width of the sliding girders, by means of brackets fitted with bolted couplings. The two assemblies, driving
and idler, are connected together with stiffening plates.
B - Electric trolleys, articulated single girder, type dST/S
• In the articulated version the trolley is fitted with circular section carrying bars which support the hoist
using a bracket fitted with an articulated joint. The driving and idler plates are sliding and adjustable on the
bars, in relation to the width of the sliding girders, by means of brackets fitted with bolted couplings. The
two driving groups face each other on the same bar and are independent from the idler groups.
C - Electric trolley, single girder, dST/r
• In the reduced dimension version the trolley is fitted with circular section carrying bars which support the hoist
in set down execution. The driving and idler plates are sliding and adjustable on the bars, in relation to the
width of the sliding girders, by means of brackets fitted with bolted couplings. The trolley is fitted with a
balance weight, laid on circular section carrying bars, to balance the eccentric mass of the hoist.
d - Electric trolley, double girder, type drT
• It is formed by a steel frame which supports the wheels, two of which are driving and two are idler. The wheels
are made of press-forged carbon steel and rotate on permanently lubricated ball bearings. The double girder
trolley is fitted with devices which prevent derailment and tilting [RES. 4.1.2.2 – Attachment I Machine Directive]
and with rubber buffers. The travelling movement is ensured by a self-braking motor, with conical induction
with progressive starting and braking at one or two speeds and by a pendular reducer, with helical-toothed
gears permanently lubricated by oil-bath, which power the movement of the driving wheels by means of the
transmission bar. The hoist can either be assembled in suspended or set down execution.
1 - Electric travelling limit switches
• All travelling trolleys are fitted with limit switches on the girder or girders [RES.4.1.2.6 a) - Attachment I Machine
Directive.
2 - Towing arm
• For all types of trolley a towing arm is available on request, adjustable in every direction, to connect the
trolley/hoist to the power line and avoid the tearing of the conductors.
3 - Oscillating bracket for hoists installed on dST/N trolley
• Available on request to allow the oscillation of the hoist on the vertical axis of the sliding girder.
KMAN16MG05
Summary of Contents for DRH 1 Series
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