It is designed to perform various earthworks on a larger scale:
- when securing movement,
- in the protection of technology and manpower,
- for engineering construction works.
Can do the following jobs:
- adaptation and construction of roads, including the removal of obstacles and non-explosive barriers, the removal of forest floods and snow,
- trenching work, including planting of objects and excavation of trenches by means of a trench plow (by towing),
- mining and loading of material (sand, stone, soil),
- material handling, including lifting and transfer of loads,
- emergency towing of low loaders and trailers for construction machinery,
- surface leveling,
- removal of masonry debris and landslides,
- creation of fire protection strips,
- for the treatment of fords and wading in a limited depth of water.
KN-251 is a two-axle vehicle with an articulated frame, on the front of which there are brackets for attaching work equipment with a universal bucket UL 3.
The work equipment with a shovel consists of:
- from a boom attached to the front frame,
- two hydraulic lifting cylinders controlling the lifting of the boom,
- a tilting mechanism that controls the position of the bucket.
The UL-3 shovel consists of:
- rear fixed part (blade),
- front pivoting part (jaws).
The cabin is all-metal, two-door, dustproof, mounted on the rear of the frame and is closed, equipped with heating and ventilation. The upper part of the cab is removable.
The axles are rigid, unsprung, equipped with huge tires. The rear axle is pivotable.
The frame is welded, two-part, equipped with a towing hitch at the rear.
Main technical data:
Engine: ŠKODA M 637 6 V - upright, four-stroke, in-line, liquid-cooled, with direct fuel injection OHV distribution
Cylinder capacity: 11940 cm³
Max. power: 230 hp (169 kW) at 2000 rpm./min.
Weight: 890 kg.
Gearbox: ALLISON TRT 482A1 with hydrodynamic converter
Dimensions of KN-251 in mm:
Length: 9040 ± 250 (with bucket in transport position)
Height: 3880 (in transport position)
Bucket width: 3150
Max. reach height: 5650
Max. discharge height: 4090
Max. recess: 850
Weight: 24930 kg ((with implement and shovel)
Shovel:
Content: 2.3/3 m³
Weight: 2405 kg
Load capacity: 7000 kg
Wheelbase: 2330
Wheelbase: 3530
Clear height: 480 ± 20
Approach angle: 30 °
Wading capacity: 700 mm (with a fixed bottom of 1000 mm).
Smallest turning radius: 7000 mm
Brake system:
- service disc brakes,
- mechanical brake.
Steering: hydraulic with feedback. The hydraulic pump delivers fluid to the double-acting cylinders, which rotate the front to the rear.
Tires: 26.50-29
Max. permitted transport speed: 40 km/h.
Fuel consumption: 26 l/Mh NM 30/105 l/100 km.
Fuel tank: 300 l NM 30
Crew: 1 engineer
Transportation:
- on its own axis on roads,
- by rail on Pav wagons,
- on low loader load capacity min. 32 t.
Source: Women-21-16 - Wheel carrier KN-25 1, regulation ČSĽA - Prague 1978
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Rozmerový náčrt.
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Popis stroja.
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Motor ŠKODA M 637 - popis.