Mechanism of dump-truck lifter
Lifting mechanism (tipping mechanism) - hydraulic, single cylinder with electro pneumatic
distant control, with direct influence in the platform.
Mechanism provides independent separate control of platform lifting of a dump-truck with the
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angle, lowing, stop in interposition, automatic restriction of angle of lifting, shaking of laden
platform in the end of lifting for complete cargo fall.
Besides, automatic fall and closing of back header are provided. Schemes of dump-trucks
platform lifting with back dumping are depicted in drawings 33 and 34
To the driver’s attention!
Switching of power take-off should be made at air pressure in pneumatic system not less than
500 kPa.
Hoisting mechanism control of truck platform with rear unloading
Hoisting mechanism control of truck platform is implemented on the flat surface of the driver
cab with a help of switch (Figure 35), located on devices dashboard (see Figure6, 23). Before
platform lifting is necessary at working engine to be proved that air pressure in pneumatic system is
lower than 500 kPa (if monometer shows less than 500 kPa, it is necessary to pump air
preliminary).
Platform lifting should be made in next order:
-To disconnect the clutch
-To turn off the switch 22 (see Figure 6)
-To turn the switch handle (Figure 35) in right position: Lifting
-To low clutch pedal slowly increasing engine over speeding simultaneously.
To tachometer it is necessary to support engine over speeding up to 1200–1500 rpm
Monitoring in the mirror of rear view or rear window, to regulate the speed of platform lifting
slowly changing engine over speeding, gradually changing engine over speeding.
To disconnect the clutch approximately on 2/3 of its switch length at moving-out of last pipe of
hydraulic cylinder and to turn the switch control of platform in neutral position. Meanwhile the
platform should be stopped. Platform shaking is possible at the end of lifting.
For lowering of empty platform:
To turn the handle of switch in outside left position –”lowering”
-To move the handle switch in neutral position
To turn off the switch 22 (see Figure 6) meanwhile locks of side should be closed
At the necessity of platform stop in interposition during the process of lifting or lowering it is
enough to depress the pedal of clutch and move the handle of switch in neutral position.
Moving of the truck with lifted platform is forbidden to avoid bracket breakage and working
surfaces of pipe of hydraulic cylinder damages.
It is forbidden to lower the platform unladed.
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