1、 二 一 三 届毕业设计 外 文 翻 译 学 院： 工程机械学院 专 业： 机械设计制造及其自动化 姓 名： 牛鹏 学 号： 2504090819 指导教师： 陈蝶 完成时间： 年 月 日 Introduction to YZ12 Vibration roller Literature The first section Major technique characteristic Z Vibration, and turned to the three major systems for hydraulic transmission, hydraulic pumps and three sy
2、stems into one, directly by the engine crankshaft output through elastic coupling-driven pump, and then by the various control components control the system of the motor or cylinder, so that all systems running. Z Has four walking speed, realize stepless speed in every document, a document for 06.5k
3、m/h, second gear for 08.6km/h, third gear for 010.2km/h, four 012.5km/h, can guarantee the speed of the rollers in a variety of conditions to make the best compaction jobs, and can travel at faster speeds. Vibration bearing life and z in order to improve reliability, this machine uses a unique desig
4、n: high-precision, forced lubrication of vibrating wheel. Z Vibration system with dual-frequency, dual-site functionality, can be effective compaction of different types and thickness of paving material. Z This vibration reduction of a four-level structure, making the vibration mode in real time, ad
5、verse effects on the crew reduced to a minimum. Coupled with the comfortable and bright cabs equipped with air conditioning, creating an ideal working environment for drivers. Z Has a maintenance-free Central hinged device that does not require lubrication. Z This machine is used in diesel engines,
6、hydraulic pumps, motors and axle components are internationally famous excellent products, so as to ensure that the roller technology advancement and reliability. Z This machine belongs to super heavy in Chinas standard of vibratory road roller, for high-grade Highway, railway, airport, dam, termina
7、ls, a high standard of subgrade engineering compaction operations. Compaction of z has a unique ability, max power 56800kg, good compaction effect. Z The overall opening of panels, all readily available and maintenance points. Z Centralized, external hydraulic pressure points, making hydraulic syste
8、ms testing, maintenance more convenient. Z Complete safety protection device, so that operators are fully guaranteed. The second section The overall structure YZ12 type vibration on the roller make use of the wheel of the vibration on the road is compacted, and it has sufficient ability to carry, an
9、d reduces through water.YZ12-vibration road roller hydraulic control, two-wheeled, single steel wheel, self-propelled structure. This machine vibration wheel parts and vehicle parts including two units, articulated through the Center articulated frame between them together. This machine adopts artic
10、ulated steering, to improve its performance and mobility. Part including drum vibratory wheel Assembly, front frame Assembly (including scraper) and other parts. Vibration round of the eccentric shaft via elastic coupling and vibration of motor shaft is connected to, supplied by a hydraulic pump vib
11、ration in pump high pressure oil to the vibration motor drives eccentric shaft rotate and generate powerful centrifugal force. Frequency and amplitude of vibration can be adjusted by hydraulic system control, to meet the requirements of different operating modes. In addition, the drum also has walki
12、ng function. By the hydraulic pump high pressure oil pump output-driven vibration in hydraulic motor rotation of the wheel on the left, thus driving vibration wheel driving. To reduce and even eliminate the adverse effects of vibration on driving car and driver, in the first frame after frame and vi
13、bration between wheel and cab and are equipped with a vibration reduction between buffer damping blocks. Driving car parts are rollers and pressure oil supply three system power source. Engine, drive and vibration and steering system, control device, the control room, electrical system, security pro
14、tection devices are installed in the car. The third section Hydraulic system Road roller hydraulic system in hydraulic system contains three main subsystems, the vibration of hydraulic system, hydraulic system and steering hydraulic system. Three pumps, vibration, steering the triple combination pum
15、ping. Walking pump with a gear pump in back tax and penalties as a hydraulic system pump, at the same time, also provide pressure to the brake cylinder oil. II. driving hydraulic system with a dual-motor pumps consisting of parallel closed-circuit. System operating pressures up to 40MPa. Driving pum
16、p for the variable displacement piston pump, piston driving motor for variable before, it constitutes the best combination and planetary reducer. Drive motor is also variable piston after, enter the end connected to the gearbox and rear axle assemblies. Pump to control the angle of oblique to change
17、 high pressure oil flow and direction, so as to change the direction of travel of the machine and speed； variable piston by electromagnetic valve with two oblique angle, so that the machine has four speeds, to meet the needs of different operating conditions. III. vibration of hydraulic system of vi
18、bratory hydraulic system is made up of single pump Dan Mada closed hydraulic circuit, maximum working pressure of the system is 38MPa. Vibration pump for variable inclined plate piston pump, vibration motor for quantitative inclined axis piston. By manipulating electromagnetic valve, you can make th
19、e vibration of pumps swashplate with opposite two variable oblique angle, so that different direction and flow of high pressure oil pump output, vibration motor with resulting different steering and speed to vibrations at different frequencies and amplitudes vibration. Four steering steering hydraulic system using open-circuit hydraulic system, the
