WJE-7 underground electric scraper

Machine technical parameters

● Rated load capacity：                               7 t

● Bucket capacity (stacked)：                          3 m³

● Travel speed                                    0~ 20 km/h

● Working hours：                                  18 s

● maximum gradeability (heavy load)：                 25%

● Maximum traction：                             100 kN

● Turning Radius：   inside                       3100 mm

                      outside                   6100 mm

● Maximum machine height when unloaded：         1800 mm

● Maximum dump angle：                            40°

● Steering angle：                                  ±40°

● Minimum ground clearance：                       280 mm

● Overall dimensions (L × W × H)： 9100 mm×2200 mm×2260 mm

● Machine operating weight：                         21 t

2.2. Battery Motor System

● Power battery：Lithium battery

● Rated energy：282 kWh

● Rated voltage：614 V

● Rated capacity：460 Ah

● Protection level：IP67

● Drive motor：Switch reluctance 100 kW

● Protection level：IP67

● Maximum speed of revolution：3500 rpm

● Maximum Torque：2500 N.m

● Type of cooling：Liquid Cooling

● Oil pump motor：Switch reluctance 140 kW

● Protection level：IP67

● Maximum speed of revolution：3000 rpm

● Type of cooling：Liquid Cooling

2.3. Drive system

● Gearbox：     made in China

● Drive axle model： Kessler D91/ Dana 16D

Front/rear axle   Spring brake hydraulic release

● Tyre：        17.5-25 pneumatic tires

2.4. Braking system

● Brake pump：   PERMCO

● Service brake： Wet multi-disc spring brake

● Parking brake： Spring brake on drive axle  

Spring brake, Hydraulic brake release

2.5. Steering system

● Type： Central articulation, Hydraulic steering

● Steering pump： PERMCO

● Steering system maximum pressure： 14 MPa

● Steering cylinder diameter/rod diameter×number of cylinders：

φ100/φ55 mm×2

2.6. Working system

● Working pump：PERMCO

● Lifting cylinder diameter/rod diameter×number of cylinders：

φ150/φ90 mm×2

● Tipping cylinder diameter/rod diameter×number of cylinders：

 φ200/φ110 mm×1

● Maximum pressure of working system： 21MPa

2.7. Electrical System

● System voltage： 24V DC

● Starting motor voltage/power： 24V/7.5kW

● Illumination： Headlight 3 pcs， 2×27W， 24V

            Rear headlight 2 pcs， 2×27W， 24V

Cab ceiling light 1 pc，1×27W， 24 V

2.8. Fuel tank capacity

● Hydraulic oil tank： 300 L

● Gearbox： 28 L

● Drive axle main drive section： 17L×2

● Drive axle wheelside reduction section： 3.5 L×4