BUCKET WHEEL EXCAVATOR KWK-910 - SKW

GENERAL CHARACTERISTIC
While designing an excavator meant especially for limited to 1.1.
deposit conditions of Turów opencast mine the configuration An exceptional advantage of the excavator is the
of the machine, working ranges, manoeuvrability and other solution of the right choice of the bucket wheel drive gearbox
technological parameters were assumed as well as the and durable joints for the gearbox and the bucket wheel shaft.
digging forces and the resistance of elements, systems and the The excavator of max. digging force 47 T with specific cutting
bearing structure of the machine to the expected dynamic forces of k L up to 200 kN/m is adapted to digging hard
loads. The vast experience of the mining exploitation and diggable fractions (interlayers) or selecting non-diggable
maintenance services, acquired during the exploitation of the layers. The excavator is equipped with a gearbox designed
existing machines was also taken into account. especially for the exploitation requirements of the lowest
Considering the requirements as for the technical parameters operational levels of “Turow” mine.
and the need to ensure a high exploitation reliability of the The most important mechanisms of the excavator
excavator the main machine systems were designed as a (gearboxes, bearing nodes) are equipped with built-in
special construction, i.e.: temperature and vibro-acoustic sensors in order to be able to
A detailed analysis and the selection of digging apply online diagnostics. This enables the exploitation of the
parameters was carried out, which resulted in obtaining their machine according to the technical conditions strategy, which
high values as well as considerable digging process largely facilitates early emergency threat detection and
smoothness (owing to the 1000 kW drive, with 16 buckets at proper planning of maintenance and its scope, at the same
the wheel of 10 m diameter). time eliminating the early preventive exchange of costly
In order to improve the durability of the machine elements.
elements, mainly in the digging system, the traditional The bearing structure of the excavator is
methods of their dimensioning in relation to nominal values characterized with high rigidity of all systems with flexible
and then allowing high overloads with coefficients of values of suspension of the digging extension arm (in order to rapidly
1.3 – 1.6 were abandoned. In the offered excavator high cut out dynamic and impact loads), which ensures high
nominal values are assumed and the overload coefficient is reliability and longevity as for the fatigue durability.