When some newly purchased semi-trailers are just on the road to pull goods, occasionally the rear wheel of the tractor will slip on the soft road or when going uphill. What is causing this? How to solve it effectively?
First of all, the reason why the wheels can run normally is that the friction between the wheels and the ground is greater than the traction on the wheels. So where is the source of friction? It undoubtedly comes from the normal contact between the pressure-bearing tires and the road. The load-bearing pressure comes from the vehicle itself. The sum of the weight and the weight of the cargo
When the carriage is full of goods or the empty car goes uphill, the lever phenomenon will appear. The rear wheel of the trailer bears the main pressure, and the front of the trailer will be slightly tilted, and the driving wheel may slip. The reason why the slipping phenomenon occurs in similar road conditions such as uphill is because the tire grip is weak, which is commonly known as the old driver can't hold the car.
After this problem occurs, you can adjust the position of the cargo in the carriage, put the cargo as far forward as possible, increase the pressure of the driving wheel, and solve the slippage problem in a short time.
If the vehicle is in the same type of vehicle, it is prone to slippage on the same road section or similar road section. After measurement, it is found that the position of the towing pin is relatively forward, which may be caused by the position of the towing pin. If the distance between the towing pin of a semi-trailer and the front of the trailer is too large Small, that is, the front overhang is too small, which may cause insufficient grip of the above tires.
Old drivers know that the tow pin that affects the front suspension is already welded when the vehicle is processed, and basically cannot be changed after leaving the factory, and the front suspension value is still one of the values that must be measured according to the announcement when the user is registered. The position must not be moved at will, so what should I do?
Don’t worry, there is actually another way. The traction seat connected to the traction pin on the main vehicle can be moved back and forth after the fixing bolts are removed. Therefore, without affecting the turning radius, properly adjust the traction seat on the main vehicle. solve this problem.
Of course, if the vehicle configuration is high, or when this kind of thing is frequently encountered, then it can only be prevented by installing other functional equipment, which is the so-called "the poor rely on mutation, the rich rely on technology."
ASR system generally has two modes, engine torque control and transaxle differential control. ASR can make the vehicle more stable when cornering, without side slip;
ASR can replace part of the differential lock. When the driving wheels on both sides slip at the same time on a road where the adhesion coefficients of the left and right wheels are not significantly different, the engine control will be activated.
ASR drive anti-skid system components ASR drive anti-skid system components
On roads where the adhesion coefficients of the left and right wheels differ greatly, the differential braking function of the drive axle first brakes the slipping wheels. At this time, the torque of the engine will be redistributed, and the engine torque control function until the two wheels slip or slip at the same time It starts when the wheel slip rate exceeds the set range.
More and more models are equipped with electronic control airbag suspension. In some cases, the airbag lifting function of ECAS electronic control suspension can be used to transfer axle load to increase driving force and try to get out of trouble.
