GMC-48K Rail Grinder
性能及特點
The GMC-48K rail grinder is used for the preventive grounding and repair grinding of railway rails. It can eliminate rust, fatigue cracks, corrugations, spots, and fins on the track surface. The machine can operate in both directions, with an accuracy meeting the technical requirement for 300km/h high-speed lines, and it has an operating efficiency outdoing other similar products in the world.
The vehicle consists of three coupled cars, namely cars A, B, and C. Among them, cars A and B are motor cars and car C is a driven car. Cars A and B are provided with power packs, operating devices, driver's cabs and power bogies. Car C is provided with the meeting room, maintenance room, auxiliary generator room, operating device, tool kit and driven bogie. The three cars are permanently connected with connecting rods, without elastic buffers in the longitudinal direction. The vehicle is provided with a circular aisle for operators to inspect the working condition of the vehicle.
The electrical, hydraulic, pneumatic, braking, power transmission, and water systems of the vehicle are monitored by a main control computer, and operations are performed on the display screen of the executing computer. The grinding wheel driven by motor has excellent fire protection and economical maintenance performance. The vehicle is equipped with fire fighting and water sprinkling systems. Each grinding vehicle is equipped with a collector to collect ground dust. According to the requirement of the client, two vehicles can be coupled into a rail grinder with 96 grinding wheels.
主要技術參數Altitude:2000m
Relative humidity:Not greater than 70%
Ambient temperature:-20℃～+50℃
Applicable track gauge:1435mm
Applicable rail type:50Kg/m, 60kg/m, and 75kg/m
Maximum superelevation of line:180mm
Maximum gradient of line:30‰
Service environment:Adaptive to windy, sandy, frosty and snowy environment
Rolling stock gauge:Conform to Rolling Stock ? Gauge for Standard Gauge Railways (GB146.1-83) and rolling stock gauge ? for HSRs.
Maximum running speed:100 km/h
Maximum coupling speed:120 km/h
Minimum running radius:180 m
Minimum grinding ? radius:180 m
Wheel diameter:?920
Total capacity of water tank:12000 L
Total capacity of diesel tank:8000 L
Power of auxiliary generator set:100KVA
Air compressor of operating system:3000L/min×3
Dust collector:10000m3/h×6
Power of grinding motor:48X18.5kW
Rotating speed of grinding motor:3600rpm
Quantity of grinding stones:48
Grinding speed:3-16 km/h (4-10km/h frequently used)
Angle of grinding motor:-70°/0° contour ? -55°/+15° contour ?-20°/+15° corrugation
Grinding modes:99 modes
Grinding speed:Adjustable between 3Km/h-16km/h. The grinding heads will be ? automatically separated from the rail surface when the speed is lower than ? 2km/h
Operating precision:±0.5Km/h at speed below 10km/h; ±1km/h at speed above 10km/h
Capacity of continuous operation:6h on normal lines; 2h in tunnels (3km)
Grinding capacity:The metal grinding amount of the rail top contour is not less ? than 0.2mm per time at the grinding speed of 7km/h
Grinding precision for vertical rail surface:The maximum amplitudes in the ranges of 300mm and 1000mm are ? 0.02mm and 0.2mm, respectively
Rail surface roughness after grinding:Less than Ra10, without continuous or excessive bluing
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