Zoomlion RT75, Руководство оператора

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09 - 10
RT75 Rough Terrain Crane
SPECIFICATIONS, UPPERSTRUCTURE
A. Main boom and extend / retract mechanism
(1) The main boom has 4 polygonal boom sections (1 basic boom and 3 telescopic
sections).
(2) The main boom head has 5
“
sheaves
”
. You do not have to remove
“
wedges
”
when you change line parts. A rooster sheave is mounted at the boom head.
(3) The boom sections extend / retract by a hydraulic cylinder and two sets of boom
extension / retraction ropes. The cylinder has a balance valve.
Min. main boom length (with sections fully retracted):
4
92ft. (12500 mm)
Max. main boom length (with sections fully extended): 1516ft. (38500 mm)
Min. extend time: 120 s
B. Jib
(1) It consists of two jib sections. Jib section I is lattice structure (10 m long) and jib
section II is box-shaped structure (17 m long). The jib section II is secured into jib
section I, and the whole jib is secured onto the right side of main boom via
moveable pins during traveling.
(2) A sheave is assembled at the jib head.
Offset: 0
°
, 20
°
and 40
°
Jib length:
32.8 ft
–
55.8 ft (10 m
–
17 m)
C. Derricking mechanism
(1) Front-mounted single derricking cylinder with two-way balance valve
Derrick angle: -3
°
- 78
°
Derrick speed (-3
°
- 78
°
): 70 sec.
D. Winch mechanism
(1) Main and auxiliary winches
(a) Main and auxiliary winches have the same parts, which include:
l Variable Axial Plunger Hydraulic Motor
l
Planetary Reducer
(b) The hydraulic motor drives the winch with a planetary reducer. When the
winch turns (rotates), the wire-rope
“
reels off
”
or
“
spools on
”
to the winch.
(2) Wire-rope
(a) Torsion resistant hoist rope
Max. hoist rope strength: 20233 lbf (90 kN)