Tractors and agricultural vehicles should reduce the throttle of the engine before stopping, reduce the speed of the vehicle to the predetermined parking position, and allow the engine to idle at low speed for a few minutes after the brakes are removed, then close the throttle and turn off the brakes. If the parking time is longer, the engine is a single-cylinder machine. Turn off the flywheel (or crank the crankshaft) after turning off the engine, so that the piston is in the top dead center of the compression stroke. At this time, the intake and exhaust valves close the cylinder to prevent dust and moisture from entering. cylinder. At the same time, the valve spring can be in a relatively free state to prolong the service life of the valve spring. When the locomotive is parked in the cold season at night, it can be extinguished when the temperature of the cooling water drops below 55° C., and then the cooling water is released to avoid freezing and deformation of the cylinder block and the cylinder head caused by the sudden cooling of the engine. When placing cooling water, do not allow cooling water to flow around the tires to prevent the tires from freezing with the ground. Before the engine is not cool, release the oil in the oil pan. The discharged oil should be placed in a clean, airtight container. When parking uphill, select a location and step on the clutch pedal first. When the car is about to stop, stop the car by pressing the brake pedal. When the car is parked on a slope in a neutral position, the driver should not leave the cab, especially if the engine is still running idly, to prevent the brakes from fluttering and causing the vehicle to slip. On the slopes, parking should be avoided as much as possible. If you want to stop, you must do three things. Hang up the low gear or reverse gear; tighten the hand and brake; If you want to park on the ice and snow road, you must open it to the sun shelter. If the parking time is too long, and you should not put cooling water, start the engine at a proper time to maintain a certain temperature, prevent the cooling water from freezing, and cause damage to the machine parts. When parking on ice or snow for a long time, sand, grass, etc. should be placed under the tire to prevent the tire from freezing on the ground. After closing the shutter, close the shutter and let go of the tank curtain. When stopping, you should first drain the cooling water and then enter the parking position to prevent the tire from being frozen on the ground by the water. Traction trailer brake parking. Traction trailers have a long stopping distance and poor synchronism, and the connecting parts of traction devices are prone to impact. At the same time, the acceleration after braking is poor. Therefore, the towing trailer should use predictive braking as much as possible, use deceleration by taxiing and engine pulling, and then use the foot to brake if necessary. Continuous and intermittent braking methods must not be used to prevent the trailer from generating snaking phenomenon, which may occur with the tractor. Crash. When parking is needed, it is necessary to select parking lots as early as possible, reduce the speed of the vehicle, and allow the car to slide over and park, so as to keep the tractor and the trailer in a straight line. Do not rush to stop in case the trailer parks in the middle of the road. After parking, besides tightening the handbrake of the tractor and engaging in a block or reverse gear, the hand brake of the trailer should also be tightened. Braking and parking of soft-connected locomotives. In a soft-connected traction driving vehicle, the front vehicle should be prevented from using brake braking as much as possible without special circumstances, and it is also not possible to apply an emergency brake. If braking is required to stop, the method of coast braking can be used to reduce the vehicle speed, and the method of coast braking can also be used to reduce the speed. Speed. If a brake is used, an intermittent brake method is also applied and the vehicle is honking a horn. Parking should be a wide flat section, the front of the car should be used to predict the rear of the vehicle with a hand gesture, and then slow down to drive, it is estimated that the rear car has entered the roadside, and then use the brake to stop smoothly, to prevent the front and rear car collision or stop the car after the road In the middle, traffic is hindered. The driver of the rear vehicle should watch the action of the front vehicle closely while he is on the road, and he will pedal on the brake pedal. Once the front brake is found, he immediately steps on the pedal. If the front vehicle is suddenly braked, the rear car At the same time as braking, turn the steering wheel so that the front of the car is deflected to one side of the rear tailgate to avoid collision. When a locomotive is driving on a sandy road, the parking time may not be too long to prevent the wheels from gradually falling into the sand under the weight of the vehicle body. It should stop for a period of time and then start another place. When a locomotive encounters a particularly heavy sandstorm during driving, the vehicle should be parked on the windward side of the road. The front of the locomotive should face away from the wind and the shutters should be closed. When the locomotive is driving, it encounters an extremely heavy rainstorm. Do not risk driving. Choose a safe location to park the car and turn on the small light to cause the attention of passing vehicles. The places where vehicles cannot be parked are as follows: 1. On the road sections with sidewalk barriers (hedges), crosswalks, construction areas (except vehicles involved in construction), and obstacles. 2. Crossroads, railway crossings, curved roads, narrow roads, bridges, steep slopes, tunnels, and roads within 20m from the above locations. 3. The bus stop, tram stop, first aid station, gas station, fire hydrants, fire station front door, hospital doorway and road section within 30m from the above location (except for vehicles using the above facilities). 4. When the vehicle is stopped for some reason during driving, it is not allowed to park in the crosswalk. In addition, on rivers and streams, under the cliffs, beside the valleys, beaches and riverbanks, on sandy soil, roads and lanes that are less than 8 meters wide, no parking, no one-way roads that are less than 6 meters wide, no parking, and hidden roads with short sight distances. There should be oil and corrosive chemicals on the road surface, and parking should also be avoided. Author unit: Agricultural Bureau of Longjiang County, Heilongjiang Province
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