Liebherr R 984 C Manual do Utilizador descarregar pdf (Página 3)

R 984 C Conch China.indd 3R 984 C Conch China.indd 3 16.01.2009 13:27:27 Uhr16.01.2009 13:27:27 Uhr

Conch Cement previously used other large hydraulic exca-

vators for loading and mining. For its new investment, the

company compared the world’s four leading manufacturers of

construction equipment. After the comparison, Conch made

its purchase decision based on the Liebherr machine’s higher

efﬁ ciency, reliability, stable quality and positive performance at

other sites.

According to the contract, these ﬁ ve R 984 C will be delivered

to ﬁ ve different sites belonging to Conch Cement. Of these

ﬁ ve machines, three of them have been dispatched to Anhui

Digang, Chizhou and Guangxi Fusui since the end of February

2008. Another R 984 C for the Guangxi Xinan production line of

Conch Cement arrived at the limestone mining site in early May

2008. The last one was delivered to the Hunan Shuangfeng site

at the end of May 2008.

So far, the machine at Anhui Digang has been working for more

than 730 hours, and the R 984 C in Anhui Chizhou has been

working for approximately 330 hours. The other one in Guangxi

Fusui has also been working for almost 500 hours.

In addition, the cab of the machine has been raised by 600 mm

to improve the driver’s view.

At present, there are three R 984 C machines in operation at

the Conch sites. Conch uses double shifts with 16 working

hours per day. The Liebherr R 984 C loads up to 6,000 t of

limestone per day, for up to 4,000 t of clinker per day.

The machine has an operating weight of 123 t and is equipped

with a turbocharged Cummins diesel engine characterized by

outstanding power and reduced emissions which conform to

current and future emissions requirements in both China and

Europe. The sturdy engine develops its rated output of 504 kW

(685 hp) at the low engine speed of 1,800 rpm. The powerful

rated output of the engine provides high crowd and breakout

force, which ensure maximum efﬁ ciency and fulﬁ llment of long-

term heavy-duty work.

The R 984 C bucket excavator is equipped with a 5.80 m buck-

et boom, a 4.35 m stick and a bottom dump bucket with a ca-

pacity of 7.7 m³. The maximum crowd and breakout force are

750 kN and 550 kN respectively. These attachments provide a

high bucket ﬁ lling ratio.

The hydraulic pump has a pressure compensation function and

can automatically optimize oil ﬂ ow. In addition, the machine is

also equipped with a Lincoln “Centromatic” automatic lubrica-

tion system for attachment and a swing ring, which is more

convenient for lubrication and especially easy for maintenance.

An important feature of the R 984 C excavator is the spacious

Liebherr driver’s cab, which provides signiﬁ cantly greater

freedom of movement. With the raised cab, the driver always

has a perfect view of the work area when digging, loading and

unloading material. The ergonomically designed seat in the cab

can be adjusted to match the driver’s weight. Shock-absorbing

suspension and a 6-way adjustable operator’s seat with mount-

able headrest further optimize the working environment.

In order to support the project, Liebherr France provided direct

manufacturer assistance in the installation, debugging and

maintenance of the equipment. Technical and service engineers

from the factory in Colmar, France, that produces the R 984 C

helped local Chinese engineers on site.

In addition, based on feedbacks from Conch, they are satisﬁ ed

with the reliability and operating efﬁ ciency of the machines.

Furthermore, timely and efﬁ cient equipment service is espe-

cially impressive.

Solution

Performance

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