HAUL TRUCKS
KGHM ZANAM load haul dump loaders are self-propelled mining machines designed for the haulage of run-of-mine material from production faces to section transfer points. Their low-profile design, articulated structure, and additive drive system allow them to operate even in workings with restricted height and on extended haulage routes.
What is a load haul dump loader and what is it used for?
The haulage of extracted run-of-mine material from mining faces to dumping points and its subsequent conveyor transport is a crucial element of the technological process in an underground non-ferrous metal ore mine. To facilitate this task for customers, KGHM ZANAM offers self-propelled load haul dump loaders that excel on longer haulage distances.
The machines feature dimensions tailored to low-profile mine workings; their design provides the operator with freedom of action and adapts to the conditions prevailing in the workings. Thanks to the proper balancing of individual components, the load haul dump loaders are characterised by excellent stability. High-traction tyres perform well in both dry conditions and mine areas with permanently damp roadways, and in combination with a powerful combustion engine, they allow the vehicles to rapidly traverse minor surface obstacles.
Design and structure of KGHM ZANAM load haul dump loaders
Articulated frame and manoeuvrability
The articulated structure of the load haul dump loader enables high manoeuvrability and unrestricted steering; the machine loaded with run-of-mine material performs exceptionally well in narrow, perpendicularly arranged gallery networks.
Push-plate run-of-mine discharge system
The load haul dump loaders feature a large run-of-mine box capacity. The box is additionally equipped with a full-discharge system that allows all of the extracted material to be removed. Thanks to the push-plate system, the transported load is pushed out at the dumping site by means of a sliding wall and a movable box.
4×4 additive drive system
Selected HT20 and HT24 haul trucks feature an additive drive system. In addition to the standard combustion engine, they are equipped with supplementary hydraulic drive systems built into the wheel hubs, which the operator can engage upon losing traction. These systems allow a greater torque to be transmitted to the wheels, making it easier to escape challenging terrain and negotiate inclines.
Technical data of the HT20 and HT24 haul trucks
|
Parameter |
HT20 |
HT24 |
|
Length |
10,300 mm |
10,550 mm |
|
Width |
3,350 mm |
3,650 mm |
|
Height |
1,850–2,050 mm |
1,900–2,100 mm |
|
Total weight |
27,100 kg |
28,500 kg |
|
Box capacity |
11.1 m³ |
13.5 m³ |
|
Payload |
20 Mg |
24 Mg |
|
Engine power |
168 kW |
168 kW |
|
Emission standard |
Stage V |
Stage V |
Full specifications and technical drawings for each model can be found on the HT20 haul truck and HT24 haul truck pages.
Load haul dump loader vs mine car: key differences
A load haul dump loader differs from a mine car primarily in its mode of movement: a mine car is a rail vehicle guided on tracks laid in the workings, whereas a KGHM ZANAM load haul dump loader is a self-propelled machine on pneumatic tyres that does not require track infrastructure.
Historically, various types of mine cars operated in mines: ore cars (for transporting run-of-mine material), self-discharging cars, ambulance cars (for transporting injured personnel), man-riding cars, and specialised units adapted for specific transport tasks. Their main drawback is the necessity to build and maintain a trackway, which limits the flexibility of haulage routes and increases infrastructure costs.
Self-propelled haul trucks eliminate this barrier; they can navigate any road in the working, easily adapt their route to the changing operational front, and their operation requires no expansion of the track network. This is why they are increasingly replacing traditional rail solutions in modern non-ferrous metal ore mines.
Application of haul trucks in non-ferrous metal ore mines
The machines available in the KGHM ZANAM portfolio are adapted primarily for operations related to the haulage of run-of-mine material from production faces and its discharge at transfer points in underground mineral ore mines free from methane explosion hazards.
FAQ: Frequently asked questions about haul trucks
How does a haul truck differ from a transport truck?
A load haul dump loader is used to transport run-of-mine material from mining faces to transfer points, while KGHM ZANAM self-propelled transport trucks carry personnel, materials, and equipment underground.
What is the payload capacity of KGHM ZANAM haul trucks?
Depending on the model, the payload ranges from 20 Mg (HT20) to 24 Mg (HT24), with a box capacity of 11.1 m³ and 13.5 m³, respectively.
Are load haul dump loaders suitable for operations in low-profile workings?
Yes; this is one of the main design features of these machines. Their low-profile structure and compact dimensions allow them to operate in workings with restricted height where standard transport machines would not fit.
What are the wheels and drive components of haul trucks made of?
KGHM ZANAM also produces its own road wheel and drive component castings for heavy machinery, including load haul dump loaders, which ensures full quality control over spare parts.
