Technical performance and quantities:

Details as the following:

  Device name               Mining dump truck

    Model                    SGA3722

 Drive type                  4×2

Length×Width×Height     8260×4100×3310upper edge of                                  the body

    Max. payload               42,000 kg

    Max. GMW                30,000 kg

    Max. speeds                56 km/h

    Max. brake distance          18 m(V_o=30km/h)

Minimum turning diameter      20 m

General ratio                 22.362

    Max. grade ability             28%

Oil consumption per 100 Kms   118 L

    Towing force                185.6kN

Body volumes(SAE)          Struck(1:1)   21m³

Heaped(2:1)  26m³

Engine

Model                   Cummins KTA19C525

Rated power              392 kWBritish/2100rpm

Max. Torque              2136 N.m/1500rpm

Displacement             19 L

Cylinder arrangement       6 cylinders in line

Cylinder diameter×travel    159×159 mm

Equipped with 4 cycle, after cooled/turbocharged engine, integrative adiator-sheath cycle system

Electrical system Two 12V battery connected in series with minus earth, the working voltage is 24V.

Hydraulic mechanical transmission :

The truck is equipped with 5 speeds imported hydraulic mechanical transmission

Max. of torque ratio  K_max=3

All ratios

 1st   2nd   3rd    4th    5th   reverse1    reverse2

    3.84   2.27   1.5   1.06   0.625   6.07      1.67

Drive axle

Differential                   i₁=3.727

Planetary gear                  i₂=6

Total reduction, rear axle         i=22.362

Suspention system

This system is front/rear nitrogen suspention system with A-frame linkage and lateral stabilizer bar. as follows:

Suspention cylinderfront/rear            308/265 mm

Inflation pressure                         1.85 MPa

Single-cylinder oil content(front/rear)         4/9.5 L   

Hydraulic steering system

The steering gear pump provides pressurized oil for steering

cylinders.Through steering wheel, oil-absorbing of the steering cylinder

is controlled in order to reach wheel turning. Moreover, supplementary steering provided by accumulator is manually controlled when power source or hydraulic pipes fail to work.

Max steering angle 35°

Air-operated drum brake system

This air-operated drum brake system includes four brake functions like service brakes, parking brake, danger brake and so on. Especially the brake pumps with accummulation energy compound braking cylinders operate on all four wheels, and make service brakes and parking brake to one device.

When the system pressure is below  0.45   MPa,the alarm lamp will lights while the closing and locking mechnism resets. The torque retarded helps brake goes into operation when trucks falling long gradient.