Productive, safe and zero emissions
The NRE Dozer is a very low profile remotecontrolled machine with the aim to increase safety and productivity in material handling operations. The NRE Dozer is designed to work in stoping widths from 0.9 m, and has the ability to work in reef inclinations of up to 25°. Main purpose of NRE Dozer is to push ore from a blasted panel into the advanced strike drive (ASD). The NRE Dozer can also be used to perform cleaning backlog ore/sweepings, roadways cleaning and panel entrances (holing) cleaning.
Its robust design, small dimensions, small turning radius, low noise level and nil gaseous emission make this machine the most suitable tool for underground applications.
1. REMOTE CONTROL CAPABILITY
2. DIFFERENT TASKS
3. QUICK TOOL ATTACHMENT
4. STANDARDISATION
5. EASY MAINTENANCE ACCESS
6. HIGH MOBILITY
7. HEIGHT 652 mm
8. ELECTRIC DRIVE
9. INTEGRATED FAST CHARGER
Narrow Reef Mining
Long Hole Drill Mining Set Up
Sweeping and Vamping
Cleaning in Dangerous and Un-supported Areas
Cleaning under Conveyor Belts
Cleaning in Smelters Areas
Accelerated Bridge Construction
Support in Different Construction Applications
Bucket
Purpose: Material loading/unloading and transportation Capacity: 0,65 m³
Blade
Purpose: Pushing, rough cleaning Working capacity: 50 – 120 t/h
Sweeper
Purpose: Fine cleaning, sweeping Coverage: 300 m² / h
| Dimensions | |
|---|---|
| Prime Mover | 3460 x 1558 x 652 mm |
| Prime Mover with Dozer blade | 3650 x 1600 x 652 mm |
| Prime Mover with Sweeper | 4660 x 1620 x 652 mm |
| Blade | |
|---|---|
| Clearance | 130 mm |
| Weight | |
|---|---|
| Prime Mover | 4115 kg |
| Power system | |
|---|---|
| Battery Type | LiFePO4 |
| Nominal Voltage | 308 V DC |
| Battery Capacity | Up to 8 h |
| On board fast charger | |
|---|---|
| Charging time | 3 hours |
| Charging source (voltage) | 380 – 550 VAC 3ph |
| Brakes | |
|---|---|
| Braking System | Spring Applied Hydraulic Release |
| Operating capacity | |
|---|---|
| Sweeper cleaning rate in m2 | 40 m2/h |
| Dozer Cleaning rate | 50 -120 t per hour |
All technical characteristics are provided for informational purposes only and DOK-ING Ltd. reserves the right to make changes without notice.
Industry: Underground mining
Customer: One of the world’s largest mining companies (South African market)
Challenges: Impossibility to fully mechanize the mining cycle (drill, blast, clean & support) in the narrow reef mining equipment which is a very labour intensive, unsafe and inefficient
Customer’s requirements: Development of a fully electrically powered and remotely controlled equipment which will ensure the full mechanization of the mining cycle
Results: Developed electrically powered and remotely controlled NRE Equipment Suite which provides health and environmental benefits of clean power technologies
In 2008, DOK-ING was approached by Anglo American to develop electrically powered equipment which could operate in working heights as low as 900 mm in narrow reef mining environments. Anglo American is one of the largest diversified mining houses in the world.
At the time when DOK-ING was appointed to develop this equipment, it was not possible to fully mechanize the mining cycle (drill, blast, clean & support) in the narrow reef mining environment. Traditionally, mining in narrow reef ore bodies is a very labour intensive, unsafe and inefficient process. In order to improve narrow reef mining safety and efficiency, remotely controlled, mechanized mining equipment was selected by Anglo American to make this possible.
The client required suitably sized <650 mm in height equipment, which was fully electrically (battery) powered and could be operated at a safe distance from the working face. The development commenced with the prototype for battery powered Dozer utilized in the cleaning cycle. Afterwards, prototypes for the drill rig were completed and tested. Finally, a support rig (roof bolter) was developed and tested, ensuring the full mechanization of the mining cycle could be achieved by means of remotely controlled equipment. This suite of equipment can operate in the stoping width of between 0.9 m and 1.7 m at working angles of up to 22°.
By 2019, a 3rd generation of the full suite of NRE equipment had been produced and is now ready to roll out in narrow reef mining operations within Anglo American and other mining houses. The NRE Suite comprises of the following equipment:
Currently, there is no other company in the world which has developed and tested a complete suite of electrically powered, remotely controlled equipment. The main benefits of this equipment are as follows:
