GM-4 internal combustion rail grinding, internal combustion rail grinding machines, electric rail grinding 
 Rail grinding machine simple structure, small size, light weight, easy to use, fast up and down the Road, walk the line round insulated, safe and reliable to adapt to the grinding of flat rail, side, $ arc, and a variety of angles. Also adapt to the rail welded joints and a variety of switch rail turnout grinding. The machine (motor) engine as the power, suitable for power field operations. 
 The main technical parameters 

 A motor: 1.5kw of power, revolution 3000r/min 
 (2) Dimensions: 1000 × 535 × 500 (mm) 
 (3) Wheel size: Φ200 × Φ32 × 25 (mm) 
 Vertical stroke 0-150mm, 0-50mm horizontal stroke 
 (5) Total weight: ≤ 42kg 
 (6) applies to a variety of rail type (18-43-75) 
 The main structure and working principle 
 GM-4 grinding machine (motor) GX160 gasoline engine powered, Type A (within a circumference of 889 mm) V-belt drive wheel through the transmission system for rail grinding operations. It mainly consists of the rack, powertrain, grinding wheel, grinding circular wheel, of walking the line devices, the main components. The rack Department of welded thin steel plate angle. Rely on the lead screw nut wheel spiral feed, running gear and rack bolted go to line round rim higher, under the Road could also be implemented on the ground. Shape as shown in Figure below. 
 Grind the rail at the top, side available insulated wheel (or wheel); grinding the rail top arc grinding wheel to rail fillet parts. 
 Use and Maintenance Notes 
 (A) the use of 
 A rail grinding machine installed GX160 small gasoline engine (motor), under normal circumstances, the general rope 3 to 5 times to start. Fails to start, not to endlessly pull the starter rope, according to the gasoline engine failure item by item examination to exclude before starting. 
 2 gasoline confidential no-load starting, the throttle on the minimum amount of new gasoline engines have a run-in period. When the gasoline engine speed above 1500 ~ 2000r/min, the clutch before bonding. 
 Gasoline fuel must be in strict accordance with the petrol and oil volume ratio 20:1 preparation. 15h new gasoline use, the fuel volume ratio of 15:1 preparation. 
 (4) As the field operations of sand dust, is strictly prohibited operating under the air filter is not installed. 
 Five. The wheel of the machine every time the feed rate should be moderate, generally 0.05 to 0.2mm, and to walk the line speed to match, feed a large quantity, walk the line speed is adjusted accordingly slow. 
 (B) maintenance of 
 A gasoline engine speed at the factory tuned to the speed limit the location of the piece and the spring can not be arbitrarily altered. Overhaul changes in position, you must re-calibration. 
 Two gasoline engine speed control room to fly cheap lubrication, every use of 50h must be inspected governor chamber oil height (should be machine lying, so that the cylinder in an upright position for 15 minutes, to be completely flow back into the lube oil the bottom of speed control room shell, and then spin out the dipstick to check. 
 Long-term use (3) gasoline engine output shaft end oil seal by lubricant leakage due to poor sealing can make speed control room, it should be replaced after use 500h. 
 4 grinding machine vertical and horizontal screw to raise the oil lubrication.