|
1. Summary
TYHI
is the largest excavator manufacturing enterprise in
China
. From 1961 it researched and developed the first
4 m3
electric rope shovel successfully, the standard dipper
capacity developed from
4 m3
to
75 m3 formed the whole series mining use
excavator such as WK
-4C
, WK-8, WK-10B, WK-12, WK-20, WK-27, WK-35, WK-55 and
WK-75, which adopting gear-rack crowding and AC VVVF,
etc. advanced international technology. The WK-75 mining
excavator is now biggest mining excavator in the word.
Up to now, more than 1300 excavators has been supplied
in China; the products take up more than 95% of market
share in China, which widely used in coal mine,
metallurgy mine and ferro-metal mine, etc. More than 20
excavators exported to abroad, such as
India
,
Pakistan
,
Myanmar
,
Peru
,
Russia
and
Kazakhstan
, etc.
Recently,
TYHI researched and designed the semi-continuous
complete set of equipment consists of mobile crusher,
stationary or semi-stationary crusher, mobile or
stationary belt wagon, hopper car, cable reel car, belt
conveyor, waste disposal machines, unloading cars, etc.
which is able to meet the requirement of hard rock
crushing and transportation in open pit mines with
annual output of 10 million tons and more.
2.
WK
Series Mining Use Excavator
WK series excavator is
the large excavating equipment for open-pit mine
developed by TZ. It combines the successful experience
accumulated for years from manufacturing of mining
shovels, at the meanwhile absorbs lots of advanced
technology for design, processing, manufacturing and
control from home and abroad. It is suitable both for
stripping and excavating on open-pit coal mine, iron
mine and ferro-metal mine.
WK series excavator has
adopted state-of-art technology, like three-dimension
imitation and definite circle analysis. It is of
reasonable performance, working dimensions and exerts
its efficiency to fully play to enhance the matching
ability with all sorts of haul trucks and crush station
to better satisfy the users’ requirements of higher
loading and lowest producing cost.
Electric system adopts
Rectifier/Regeneration to common DC Bus-bar and variable
frequency speed adjustment. The electric control, taking
PLC as the core, is a 3-stage system of up-position
monitoring, field bus and frequency variable speed
control. It is of futures of no disturbance to power
grid allowing wider range of power voltage fluctuation
and high power factor. The system is loaded with
software to optimize the dig/cut curve and automatically
optimization of hoist and dig power distribution. The
system can realize self troubleshooting and running
status display, electric power calculating and so on.
This system has the advantages of state-of-art
technology, reliable operation, high transmission
efficiency and low power consumption.
|