Maintenance Method of Oil Tanker Semi-trailer

Oil transport semi-trailer is mainly used for large oil transport, the tonnage is generally around 40~60 cubic meters.

There are usually two-bridge semi-trailer and three-bridge semi-trailer. The material of the square tank body is made of Q235A steel plate, and the tank body is built with multiple reinforced wave-proof partition plates, and there are through-holes at the lower end of the partition plates to reduce the impact of oil in the tank body and improve the strength of the tank body when the car is driving. The combined tank mouth is located at the top of the tank, there is a self-locking small cover above the big cover, and a breathing valve is installed on the upper side of the big cover to ensure the same atmospheric pressure inside and outside the tank; with electrostatic grounding wire. Installed pumping oil system, through the extractor from the side of the gearbox, can self-priming and self-exhaust; with two pumping oil pipes, with quick-fit joints, suction range of 6 meters. Two fire extinguishers and special tools. The semi-trailer is divided into two parts, the oil tank body and the skeleton or bracket supporting the tank body.

Failure and overhaul method:

1, the brake does not work, slow braking cause: brake shoes friction piece and brake drum gap is too large, adjust the gap brake shoes friction piece excessive wear, replace the brake shoes friction piece gas chamber is broken, replace the gas chamber gas brake system leakage so that the pressure drops, check the leaky parts, repair or replace parts emergency relay valve is not working well, replace

2, can not lift the brake, the brake is released slowly because: the system pressure is too low, the air brake system pressure to the specified value brake return spring damage, replace the spring pipe blockage, check and clear the emergency relay valve or quick release valve is not working well, check, replace the brake air chamber push rod stroke is not correct, readjust

3, tire swing causes: loose wheel nuts, tighten the axle bearing sintering, damage, replace the bearing axle bending, correction, replacement axle bearing clearance is too large, correctly tighten the bearing lock nut, replace the bearing lubricating grease on time, replace the axle bearing: tire excessive bias grinding, axle axis and frame centerline perpendicularity exceeds the standard serious, adjust the distance between the ends of the axle and traction pin as consistent as possible

4, the shaking handle shaking resistance is too large reason: poor lubrication, supplemental lubricating grease bearing damage, replace the bearing gear eccentric or wear serious, decomposition check and replace parts by rod thread damage, replace the screw.