| Schaeff-Terex
has developed a versatile, robust tunnel excavator to be used
for demanding and efficient tunnel heading. The responses
from Schaeff's international clientele and sales forecasts
for the new TE 210 are very promising, and the first machines
of this new type have already been shipped.
The new TE 210 tunnel excavator is playing a key role in the
efforts of Schaeff-Terex' Construction & Mining Technology
(CMT) division to expand its position worldwide by launching
specialized machines. The machine, developed for tough operations,
is an exemplary model of modern tunnel technology, which is
designed to speed up heading below ground.
Customer demands and the detailed evaluation of years of
experience gained from worldwide equipment applications were
the decisive criteria for CMT's development and production
team throughout the process of steadily upgrading the well-known
TE 200 Tunnel Excavator. The result is a robust, easy-to-operate
and compact machine. Greater reliability and stability as
well as better excavator characteristics are the key enhancements
of the TE 210 versus its predecessor. The substantially improved
serviceability and maintenance of this new generation of tunnel
excavators is absolutely convincing.
The special boom geometry — in combination with the
swing dipperstick and high breakout and ripping forces (140
kN and 100 kN respectively) — allows for the effective
and accurate excavation of tunnel profiles. Working heights
from 4.80 to 8.50 metres and tunnel cross sections from 30
to 80 square metres in soft to medium-hard rock are ideal
for the TE 210. And when things get really cramped in the
tunnel, the machine demonstrates its manoeuvrability: the
machine's compact superstructure featuring a short-tail slewing
radius and a tiny swing radius of 3,670 millimetre, enable
it to be deployed in tight spaces. For larger or shorter boom
reaches and special jobs, Schaeff-Terex also offers customer-specific
solutions and boom equipment.
The operating weight has been increased to an impressive
28 tonnes, providing perfect stability, and the low-maintenance
crawler-type chassis (3,450 millimetres in length) enlarged
to 2,700 mm. Both measures substantially improve the machine's
stability, even when excavating, pulling and lifting difficult
jobs.
The 142-kW Deutz turbocharged diesel engine, featuring charge-air
cooling, turns the TE 210 into a real powerhouse, allowing
for the assembly of powerful work attachments. On request,
the engine can be fitted with a soot particle filter system
made by Engelhard (Puritech).
The same applies to the zero-emission 132-kW electric motor
– an option which is particularly interesting for construction
companies employing compressed-air tunnel heading or if zero-emission
is a prerequisite. The cable is routed directly on the superstructure
or, alternatively, through a cable drum installed on the superstructure
or chassis.
If the electric motor is installed, the excavator's 360-degree
swing range remains equally excellent: a special slip-ring
assembly with electrical sliding contact ring must be installed.
If the customer decides to install the conventional diesel
engine, the appropriate diesel engine components will be made
available.
With regard to the hydraulic installation, Schaeff-Terex'
engineers trust in the well-proven and reliable load-sensing
systems from Bosch-Rexroth successfully, used in countless
ITC-tunnel heading machines all over the world. The load-independent
flow distribution (LUDV) of the main control valves ensures
continuous, effective, powerful, and high-precision profile
excavation. A dual, flow-controlled axial piston pump ensures
that the conventional ripping buckets, powerful cutting units
(up to a hydraulic drive power of 90 kW), hydraulic hammers
(maximum weight of 1,000 kg), or hydraulic demolition crushers
will "bite their way" through the rock.
In his or her robust full-vision FOPS-cab, the driver enjoys
excellent, panoramic visibility. The significantly improved
serviceability is a great advantage for the tough applications
and conditions below ground and in distant countries. Schaeff-Terex'
engineers have deliberately dispensed with electronic assemblies,
simplified electronics and designed the machine so as to ensure
service-friendliness for tough tunnel operations. The cylinders
on the support and dozer blade and the integrated bucket cylinder
are all protected against stone impact.
Thanks to these convincing innovations, Oriental Engineers,
Schaeff-Terex' Pakistani partner, had well-founded arguments
for their deal. Schaeff-Terex' customers were thoroughly impressed
with the technical solutions, the superior build quality,
and the serviceability of the new TE 210 when it was subjected
to the acceptance test. Several tunnel excavators of the new
generation — complete with bucket, WS90 cutting unit
and heavy-duty hydraulic hammer — have been shipped
to Pakistan these past few weeks. Further deals have already
been announced.
More information:
Terex GmbH
Schaeffstr. 8
74595 Langenburg
Phone: 07905/58-0
Fax.: 07905/58-114
info@TEREX-Schaeff.com
www.Terex.com
|
