自卸汽车外文翻译-汽车设计(编辑修改稿)

自卸汽车外文翻译-汽车设计(编辑修改稿)内容摘要：

on the vehicles are more stringent. Dump Truck load of goods sealing requirements increasing. Automotive engine technology represents a country39。 s industrial level. Developed countries in Europe to Euro V vehicle emissions standards, and requirements of the domestic truck is currently the country Ⅲ standard, domestic and foreign well as very large gap, and reduce vehicle emissions of key technologies are only few the hands of countries, China still has great technical follow up and development process. Further enhance the environmental protection requirements, sealing requirements of the Dump Truck also mentioned the agenda, both at home and abroad using a variety of methods to prevent the Dump Truck39。 s cargo spilled. Dump Truck in the professional classification abroad also help protect the environment, such as pollution category of fluid transport development and use of Dump Truck, but most major blessing Oh partment sealed by a Dump Truck39。 s way. Dump Truck of the closures are mainly two: one for soft tarpaulin cover and a metal hard cover. Therefore, foreign vehicles generally do not overload, the basic goods does not exceed the car along. The Dump Truck is the domestic have both, the majority of urban environmental requirements of the high metal cover, seal better, but the cost is high。 environmental requirements of the majority of the lower soft cover, seal less, but the cost is low. Second, the main structure and function Dump Truck chassis and coat by the two major ponents, two types of chassis they use a stereotypical car chassis. Dump Truck as a shorter wheelbase than the average, the prices require higher strength and stiffness, so characteristic for the Dump Truck, Dump Truck chassis are often designed to be specific. Tipper tops, including cars, subframe, hydraulic lift dump bodies, electrical are systems. Dump Truck lifting mechanism is the core of the Dump Truck judge the merits of the primary indicators. Lifting mechanism of the type currently mon are: Ftype lifting mechanism to enlarge tripod, Tstyle tripod zoom lifting mechanism, lift cylinder, front roof lift and double roll. Dump Truck engine, chassis and cab of the truck are the same structure and general. 4 Points after Dump Truck of the car to rollover and side tipping two, by manipulating the system control rod movement, the more mon after the tipping, tipping push rod to make car, a small number of twoway is tipping. Distribution of highpressure oil through the valve, tubing into the lift cylinder, frontend with the cab car is safety board. The engine through the transmission, PTO driven hydraulic pump unit, hydraulic tipping body partments from the fuel tank, hydraulic pumps, distribution valves, lifting hydraulic cylinders, control valves and tubing and other ponents. Hydraulic tipping body is partments from the fuel tank, hydraulic pumps, distribution valves, lifting hydraulic cylinders, control valves and tubing and other ponents. The engine through the transmission, PTO driven hydraulic pump unit, distribution valves for high pressure oil through the tubing into the lifting cylinder, push rod to make car rollover. More mon after the rollover, by manipulating the system control rod movement, can stop the train tilted in any desired position. Compartments use of their owner gravity and hydraulic control reset. Tripod enlarge Lifting Mechanism is currently the most widely used way of lifting for 8 to 40 tons of load partment length of to 6 meters. Structural advantages of mature, stable lifting and low cost。 drawback to the main frame on the floor inside is the closed height of the larger plane. Most of lift cylinder form of Dump Truck used in the 6X4 on the bridge in front of each side of the second installation of a multicylinder (generally 3 to 4), the hydraulic cylinder directly on the pivot point on the partment floor. Twin advantages of lifting the main frame for the partment floor and a high degree of closure on the smaller plane。 disadvantage is that the hydraulic system is difficult to ensure synchronization of two hydraulic cylinders and held steady and poor students, the overall stiffness of the cars require a higher floor. Way before the top lift of simple structure, with the main frame on the floor inside the closed surface height can be very small, vehicle stability, low pressure hydraulic system, but the first big trip at the mostcylinder, high cost. Double roll force cylinders good, travel less, achieve double roll。 but more plex hydraulic piping, give students a higher incidence of rollover accidents. 5 Dump Truck with the development and improvement of domestic purchasing power, Dump Truck is not in the traditional sense of what life can be dry universal truck, from the design point of view but also according to different goods, different conditions, different is regions developed different products. This requires the user to purchase vehicles to the manufacturer for specific use. 1. Chassis In the choice of chassis, generally is based on economic benefits to consider, such as: the price of the chassis, loading quality, overload capacity, fuel consumption per hundred kilometers, road maintenance and so on. In addition, the user must also consider the chassis of the following parameters: ① Height of the chassis frame on the plane. General 6x4 chassis frame height of the upper surface of 1050 to 1200. The higher the number the greater the vehicle center of gravity, the more easily cause an overturn. The main factors affecting the value of the tire diameter, suspension layout and the main frame is crosssection height. ② Chassis rear overhang. The number of Dump Trucks moves through the General Assembly, growth stability, gives students a rollover accident caused. This value is generally betwee。