A special vehicle type 1. underground with special vehicles: tire loader, multi-functional stent carriers, stent forklift, WC-3A trackless rubber wheel transporter, WC-3E tools with the crane, WC-3D two-way down the channel transporter, etc. 2. ground with special Vehicles: tire loaders, tracked bulldozers, tire cranes, forklifts, sweepers, sprinklers and so on.
Special vehicles refers to the outside dimensions, weight and other aspects of more than the design of the vehicle limits and special-purpose vehicles, specially designed or specially modified, equipped with fixed devices and equipment, the main function is not for the carriage of people or cargo motor vehicles.
Three, special vehicles generally have special signs or special models. Refers to undertake special duties and special vehicle license plate, installation and use of alarms and sign lamps and lanterns of the vehicle. Such as ambulances, fire engines, police cars, engineering rescue vehicles, military supervision vehicles. All kinds of special vehicles in the use of vehicles, often also appear oil leakage failure, oil leakage failure will directly affect the use of the car and productivity, resulting in the waste of lubricants and fuel, consuming the power and efficiency of the special vehicle. Sanitation vehicles, engineering vehicles, vans; oil leakage once the phenomenon occurs, the special vehicle internal lubricant is reduced, resulting in poor lubrication of the machine parts, parts of the cooling is poor, resulting in damage to the parts, affecting the vehicle is the service life, and even leave the accident hidden trouble.
Four, preventive measures 1. Attention to the role of the liner. Automotive static parts (such as the joints end face, end caps, shell, cover gasket, flat enamel cover, etc.) between the parts of the liner plays a leak-proof sealing role. If the material, production quality and installation does not meet the technical specifications, it can not play a role in sealing leakage, and even accidents. 2. car all kinds of fastening nuts need to be tightened according to the specified torque. Too loose pressure will not tighten the liner leakage; too tight and will make the screw hole around the metal bulge or will be screwed slippery buckle and cause oil leakage. In addition, the oil sump oil drain screw plug if not tightened or back to loose off, easy to cause the loss of oil, and then occurred "burned holding the shaft" of the machine damage accident.
3. Timely replacement of failed oil seals. A lot of moving parts on the car (such as oil seals, O-rings) will be improperly installed, the journal and oil seal edge is not centered, eccentric and dumping oil. Some oil seals will lose elasticity due to aging of rubber. Rubber oil seal oil leakage phenomenon, mostly for its wear and tear, aging or with its work with the rotary shaft journal grinding grooves.
4. Avoid one-way valve, ventilation valve blocked. This causes a rise in temperature inside the case, oil and gas filled with the entire space, the discharge does not go out, so that the pressure inside the case to increase lubricant consumption and shorten the replacement cycle. Engine ventilation system blocked, increasing the piston's resistance to movement, so that oil consumption increases. Due to the role of the case inside and outside the case of air pressure difference, often caused by sealing the weak point of oil leakage. Therefore, the vehicle needs to be regularly inspected, dredged and cleaned.