The adhesion of the front four rear six flat-bed trucks is simply the state of adhesion between the road surface and the flat truck tires. The large and small adhesion of an entire front four rear six flat-bed trucks is also a product of the road-to-vehicle weight adhesion coefficient. Then just for a wheel, the adhesion of its wheels is the vertical reaction force of the ground on the wheel, which is multiplied by the adhesion coefficient of the driving road. The adhesion coefficient of a car cannot be changed by a person's will to a fixed value, which is related to the degree of wheel and vehicle speed sliding on the road surface.
During the driving process of the front four rear six flat-bed trucks, when the road surface is used to drive the tires of the vehicle to generate thrust and braking, the ground will be in accordance with the ground braking force and steering direction generated by the front four rear six flat-bed trucks. The trajectory is predetermined so that the desired lateral lateral reaction of the steering can be achieved. These are all depended on adhesion.
The adhesion coefficient on different road conditions is not the same on different roads. For example, on asphalt pavements that are dry and have good road conditions, or on a concrete road, four peaks and six flat-bed trucks can reach a maximum peak adhesion coefficient of 0.9. . The next step is the gravel road, dirt road, and finally ice surface. When the current four rear and six flat-bed trucks drive on icy roads, the peak value can reach 0.1, and the wheel can reach 0.07 when sliding. Therefore, the adhesion coefficient is the smallest on an icy road, and it is difficult to advance on it, the brakes are not braked during braking, and the steering becomes difficult. Even when it is severe, tail flicks and side slips occur. Etc. Therefore, in the lower temperature winter, some cinders or sand are laid on the road surface to increase the adhesion coefficient on the road surface, so as to ensure safe driving of various vehicles.
The first four rear six flat-bed trucks have both lateral and longitudinal adhesion, but the current four-to-six flat-bed trucks have more lateral adhesion when braking and driving the wheels, and their lateral adhesion is reduced. The situation. Therefore, in the case that the front four rear six flat-bed truck brakes are locked, the wheel's seat surface is slipping. At this time, the vertical adhesion has reached the limit. The front four rear six flat-bed trucks are attached laterally. The effort will be significantly reduced, so that flat-bed trucks can not be turned, if the steering is already turned to an angle, but the truck will still be driven in the direction of the original straight line.
If during the braking process of the front four rear six flat-bed trucks, the wheels of the trucks are all locked, it will be provided because there is no lateral adhesion force to resist the lateral force received by the flat-bed trucks. For example, in the case of horizontal breakage on the road surface, centrifugal force in the process of turning, lateral wind, etc., it is not possible to maintain the straight driving of the front four rear six flat-bed trucks, and it also appears that the flat-bed truck is out of control and sideways. The situation of slippage and the like are relatively easy to cause the occurrence of traffic accidents. Therefore, it is necessary to be particularly careful when driving flat cars on the road surface with a low adhesion coefficient.
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