UK-4 Underground Mining Trucks
Overall Machine Features
Equipped with a Yuchai China III electronic fuel injection engine, this model delivers powerful performance, low fuel consumption, low emissions, and low noise levels, while complying with national emission standards. It features a "combined travel and parking" full hydraulic wet braking system, ensuring safe and reliable operation during both travel and parking phases, along with an integrated emergency braking system. This configuration has been granted the National "Mining Product Safety Mark Certificate." The front and rear frames employ a hinged design with a central swing mechanism, resulting in a reduced turning radius. The full hydraulic steering system ensures agility and lightweight operation. The entire machine exhibits excellent trackability. It is equipped with four-wheel drive and a four-speed power transmission gearbox, providing substantial driving force and a wide speed range—making it ideal for long-distance operations on rugged, uneven terrain with steep gradients, as well as for use in poorly ventilated mine aisles, with a maximum climbing capability of 16°. The overall dimensions of the machine are 5400 × 1400 × 1800 mm, representing the smallest overall footprint currently available in the domestic market, making it particularly suitable for operations in ultra-low and ultra-narrow aisles. The machine is fitted with low-pressure, wide-base, puncture-resistant, and wear-resistant tires, which increase the ground contact area and enhance shock absorption. Additionally, the operator's seat incorporates oil-gas springs for dual shock absorption, significantly improving driving comfort and reducing operational fatigue. The design also integrates dual exhaust purification systems—a three-way catalytic converter and a water filter—ensuring safety and environmental compliance. These measures effectively mitigate the environmental impact of engine exhaust emissions on the surrounding working environment, contributing to the well-being of operators.
General Specifications of the Entire Unit | project | parameter |
Dou Rong | 2.3 m³ | |
nominal load capacity | 4000 kg | |
Traction | ≥48 KN | |
External dimensions (transportation condition, dry bridge type, length × width × height (including protective cover)) | 4700 × 1400 × 1800 mm | |
External dimensions (transportation condition, wet bridge, length × width × height (including protective cover)) | 4780 × 1720 × 2040 mm | |
Cargo container dimensions (Length × Width × Height) | 2790 × 1700 × 620 mm | |
Maximum height during unloading | 3400 mm | |
Minimum ground clearance | 265 mm | |
Maximum grade capability | 16 ° | |
Minimum turning radius (outer side) | ≤4800 mm | |
Minimum turning radius (inner side) | ≤2700 mm | |
Overall Equipment Quality | 4600 kg | |
wheel base | 2270 mm | |
tread | 1410 mm | |
Drive configuration | four wheel drive | |
brake assembly | Service brake | Hydraulic braking, spring release |
parking braking | Hydraulic braking, spring release | |
engine | model | Yuchai YC4DK90-T304 (Stage III) |
type | In-line, water-cooled, four-stroke, direct injection | |
Rated Power / Speed | 66kw / 2400rpm | |
fuel oil | diesel oil | |
drive system
| torque-converter | |
gear-box | Fixed-shaft power-shifting straight-tooth constant-engagement gear | |
Gear shift | Four advances and four retreats | |
Forward 1st Gear | 8±1 km/h | |
Shift to second gear | 25±3 km/h | |
Reverse 1st gear | 9±1 km/h | |
Shift to reverse gear II | 20±3 km/h | |
Drive type of the axle main transmission | Spiral bevel gear drive | |
Tire model | 33×12−20 (solid core tire) |
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