Classification of Semi trailers for Oil Transport Semi trailers

Oil semi-trailer is mainly used for large-scale oil transportation, with a tonnage generally around 40-60 cubic meters. There are usually two axle semi trailers and three axle semi trailers for transporting oil. The material of the square tank body of the semi-trailer for transporting oil is made of Q235A steel plate. The tank body is equipped with multiple reinforced anti wave partition plates, and the lower end of the partition plate has a through hole to reduce the impact of oil in the tank body during vehicle driving and improve the strength of the tank body. The combination tank mouth is located at the top of the tank, with a self-locking small cover on top of the large cover. A breathing valve is installed on the upper side of the large cover to ensure consistent atmospheric pressure inside and outside the tank; Equipped with static grounding wire. Install the pump oil system, which takes power from the transmission side through a power take-off and can self suction and self discharge; Equipped with two oil extraction pipes and quick connect fittings, with a suction range of 6 meters. Two fire extinguishers and specialized tools. The semi-trailer for transporting oil is divided into two parts, the oil tank body and the skeleton or bracket supporting the tank body. Malfunction and Maintenance Methods: 1. Brake Failure and Slow Braking Causes: The gap between the brake shoe friction plate and the brake drum is too large, and the brake shoe friction plate is excessively worn when adjusting the gap. The brake shoe friction plate is replaced, and the air chamber is damaged. The air brake system in the air chamber is leaking, causing a pressure drop. Check the leaking part, repair or replace the emergency relay valve, and replace it. 2. The brake cannot be released, and the brake is released slowly. Causes: The system pressure is too low, and the pressure of the air brake system is increased to the specified value. The brake return spring is damaged, and the spring pipe is replaced. Check and remove the emergency relay valve or quick release valve for poor operation. Check and replace the brake air chamber push rod stroke. Adjust it again. 3. Tire Swing Causes: Loose wheel nuts, tightened axle bearings are sintered and damaged. Replace the bearing and correct the bent axle Replace the axle bearings with excessive clearance, tighten the bearing lock nuts correctly, replace the bearing lubricating grease on time, and replace the axle bearings; The tires are excessively worn, and the perpendicularity between the axle axis and the frame centerline exceeds the standard. Adjust the distance between the two ends of the axle and the traction pin as much as possible to be consistent. 4. The reason for the excessive resistance of the rocker arm shaking is poor lubrication. Add lubricating grease to the bearing and replace it. The bearing gear is eccentric or severely worn. Disassemble and inspect the replacement parts. If the screw thread is damaged, replace the screw.