13
2. Transmission device
2.1 Introduction
The transmission device is imported from ZF Company of Germany. It consists
of hydraulic torque converter, dynamic shifting gearbox, hydraulic system and
electrical system and has the following advantages:
a) Compact structure design and built-in oil circuit;
b) High-tooth and high-coefficient helical tooth engagement, both reducing noise
and improving bearing capacity;
c) Proportional electromagnetic valve facilitating automatic manipulation and
control unit integrating diversified control programs, i.e. EST-37A are adopted.
d) The inching of electronic controlled program is used and the function is
realized by EST -37A control element, so that the micro control accuracy of the
driving and heavy load of the forklift can be realized more easily.
e) The hydraulic clutch is furnished with specially treated paper friction lining
and steel sheet to improve its abrasion; the oil circuit of hydraulic torque converter is
fixed with a good filter to improve the purity of oil and elongate the service time of
the torque converter.
2.2 Base Structure and Performance of Forklift Truck
(1) Structure and Parameter of Transmission
Item Unit
CPCD140
～160-Cu
Type
Circular Diameter mm 300
Stall Torque Ratio 2.066
Torque
Convertor
Setting pressure MPa
Flow of Charging Pump L/min
Type
1 5.088
2 2.263
Automatic
Gearbox
Gear Ratio
3 0.994
Net Weight kg 300
Oil capacity l 13
Oil Type SG/CF-4 15W-40
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