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Surface Miner 3700 SM

Surface Miner 3700 SM


 

Technical specification

 

  Surface Miner 3700 SM
Cutting width max. mm 3,700
Cutting depth*1 mm 0 – 600
Cutting drum 1,400
Number of tools Depending on machine application
Engine  
Manufacturer Cummins
Type KTA 50
Cooling Water
Number of cylinders 16
Output kW/HP/PS 1,194/1,600/1,623
Fuel consumption, 1/1 load l/h 284
Fuel consumption, 2/3 load l/h 189
Speed/gradeability  
Travel speed m/min (km/h) 0 – 20
Theoretical gradeability 20
Ground clearance 370
Weights*2  
Front axle load, full tanks daN (kg) 59,000
Rear axle load, full tanks daN (kg) 98,000
Own weight daN (kg) 157,000
Operating weight, CE*3 daN (kg) 176,000
Tracks  
Front tracks (L x W x H) 3,880 x 500 x 1,200
Rear tracks (L x W x H) 3,880 x 500 x 1,200
Tank capacities  
Fuel tank 2,900
Hydraulic fluid tank 800
Water tank 800
Electrical system 24
Lighting V 220
Spotlights 10 x 400 W each
Conveyor system  
Width of primary belt mm 1,800
Length of primary belt mm 7,000
Width of discharge belt mm 1,800
Length of discharge belt mm 12,000
Length of discharge belt mm 12,000
Theoretical discharge belt capacity m3/h 2,400

*1 = All weights refer to basic machine without any additional equipment.

 

 

Technical description

 

Basic design


Surface Miner for cutting rock (< 120 MPa) with mechanically driven cutting drum and two-part loading conveyor. Can also cut material> 120 MPa in exceptional cases.


Frame


Rigid, welded honeycomb design with integrated tanks for diesel and water.


Crawler unit suspension


The four crawler tracks are free-floating and connected to supporting arms which are linked to the frame via a moving parallelogram made up to two strut constructions in each case. The tracks are fitted with double grouser track shoes.


Cutting depth control


The height is adjusted via hydraulic cylinders. The rear crawler suspensions are controlled via an automatic cutting depth control unit.


Travel drive


Each crawler unit is driven by a planetary gearing with hydraulic motor. Each of the front and rear travel drive motors is fed by a hydraulic variable displacement pump. The advance
speed can be infinitely adjusted from zero to maximum in both travel gear and operating gear.


Brake system


Operating brake via a closed-loop hydrostatic system. Parking brake for each crawler unit with spring-loaded multiple disc brakes.


Scraper blade


The drum chamber is sealed by a hydraulically actuated scraper blade behind the cutting drum, thus ensuring a clean cutting surface.


Cutting drum


The cutting drum rotates in an up-cutting direction. The cutting tools are mounted in toolholders welded onto the body of the drum. The tools used depend on the machine's momentary use and on the properties of the material being cut.


Cutting drum drive


The cutting drum is driven via a mechanical clutch on the flywheel side of the diesel engine, as well as transmission belts and a planetary gearing installed in the cutting drum. The cutting speed can be adjusted in line with the momentary application by replacing the pulleys for the transmission belts.


Steering


The machine is steered via two hydraulic cylinders on each of the front crawler tracks.


Water spraying system


The water spraying system largely prevents the generation of dust while cutting material and reduces the degree of wear on the cutting tools. The spray nozzles can easily be removed for cleaning. Spray nozzles are additionally installed for the loading conveyors.


Soundproofing


The engine, cooling unit and hydraulic system are soundproofed to reduce the noise level and protect both the operator and the environment.


Operator's cab


Enclosed cab, soundproofed and mounted on vibration-damping elements. Rotating driver's seat with armrests into which all the most important controls have been integrated. The
cab is equipped with air-conditioning and heating.


Conveyor system


The conveyor system comprises a wide primary belt which picks up the cut and comminuted material at the cutting drum, as well as a discharge conveyor to discharge the material onto trucks. The discharge conveyor can be adjusted in height and slewed to both sides. The conveyor speed can be varied.


Lighting system


Complete lighting system with generator and halogen spotlights for nighttime operations.


Safety equipment


Comprehensive safety equipment with five Emergency OFF switches.


Pneumatic system


Compressor and accumulators for starting the diesel engine, as well as auxiliary functions.


Tool kit


Complete tool kit for maintenance and repairs.


Central lubrication system


  The Surface Miner is equipped with a central lubrication system which supplies all the most important bearing points with grease.

   


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