液压升降平台液压升降车毕业课程设计外文文献翻译中英文翻译.docx

1、液压升降平台液压升降车毕业课程设计外文文献翻译中英文翻译1 英文文献翻译1.1Design Of A LiftHydraulic lifting platform is a versatile crane lifting equipment, widely used in factories, docks, construction, transportation, sports, equipment maintenance and other high-altitude operations and maintenance. Existing hydraulic lifting platfo

2、rm there are many, can be roughly divided into: four-wheel mobile lifting platform, push-type lift platform, car load lifting platform, fixed platform lift, scissor lift platform, four-post lift The two column lift and so on.In recent years, with the rapid increase in the use of cars, Chinas booming

3、 auto industry, especially the car industry. This makes the auto repair industry has grown, demand for automotive maintenance equipment rapid expansion, but also the maintenance requirements in the automotive tools and equipment requirements on the increasingly high lift vehicle repair workshop is e

4、ssential and most important maintenance machinery and equipment. The role of auto lift car is in need of repair, a smooth upgrade to the appropriate height, so that maintenance workers at the bottom of the car chassis maintenance and inspection. Generally divided into high column car lift and scisso

5、rs. Either way, are required to meet the synchronous lifting the car, cornering can not happen, and asked for the empty chassis bottom for easy maintenance workers for maintenance work which requires lifting platform synchronous lifting, running smoothly. Therefore, maintenance of the car lifting pl

6、atform equipment is generally driven by hydraulic system.With the expanding service sector, as well as the further development of automation, the maintenance staff to reduce labor intensity, making the easy maintenance, and can better improve the efficiency of vehicle maintenance, and car maintenanc

7、e service quality, so the hydraulic lift Platform automation requirements are also rising. Vehicle maintenance is currently required to meet the synchronization control, lifting the platform lift system depends mainly on the hydraulic system and electrical control and drive systems, but the lift pla

8、tform is currently owned by the widespread leakage, internal leakage, short life, the operation not flexible, synchronous operation and low defects. To avoid these disadvantages, require more precise synchronization to ensure that the hydraulic lifting platform lift precision, and now most of the hy

9、draulic lifting platform simultaneously phasing out all traditional hydraulic valves, the use of more precise control of the new electro-hydraulic servo valve, electro-hydraulic proportional digital electro-hydraulic valve and valve to control the hydraulic system, to achieve synchronization and hig

10、h precision. As a form of electro-hydraulic proportional valve type of diverse, easy to use composition of a variety of electrical and computer-controlled hydraulic system, control of high precision, installation flexibility and strong anti-pollution and many other advantages.Currently used in the a

11、utomotive repair Hydraulic synchronous lift platform vehicle maintenance plays an important role in synchronous lifting platform on a variety of hydraulic valves, hydraulic cylinders, hydraulic pump station innovation and improvement, making a hydraulic lifting platform synchronization smooth runnin

12、g, low noise, fast response, high precision synchronization of the repair and maintenance in the car played a crucial role.With the hydraulic lift platform in the automotive repair industry, application and further improvement and innovation in the maintenance of hydraulic lifting platform has the c

13、ar can achieve more complex functions, the structure of the platform, drive on, and a variety of control systems, has been greatly improved. The current lift platform lift system is mainly driven by the hydraulic system, of course, do not rely on hydraulic pressure, as well as dual-use diesel electr

14、ic rotary lift platform, now appeared battery driven lift platform, continuously variable transmission can be achieved with safer, more convenient and low noise advantages. Lifting platform is currently widespread leakage, internal leakage, short life, the operation is not flexible, synchronous oper

15、ation and low defects. To avoid these disadvantages, require more precise synchronization to ensure that the hydraulic lifting platform lift precision, and now most of the hydraulic lifting platform simultaneously phasing out all traditional hydraulic valves, the use of more precise control of the n

16、ew electro-hydraulic servo valve, electro-hydraulic proportional digital electro-hydraulic valve and valve to control the hydraulic system, to achieve synchronization and high precision. As a form of electro-hydraulic proportional valve type of diverse, easy to use composition of a variety of electr

17、ical and computer-controlled hydraulic system, control of high precision, installation flexibility and strong anti-pollution and many other advantages, applications become increasingly broadened.In China, although synchronous hydraulic lifting platform for such development, production started late,

18、but with Chinas rapid economic development, in order to adapt to China in various fields used by the synchronous hydraulic lifting platform development needs and take the large-scale, standardized , intensive, product support services, achieving mechanical, electrical, fluid integration platform in

19、the application of synchronous movements. The use of synchronous hydraulic lifting platform surface, the service has been expanding, is now in rapid development stage, and now hydraulic lifting platform reliability, security, easy operation and simple directness, and other aspects greatly improved,

20、and with the the popularity and development of computer and mechanical, electrical, fluid integration progress of the study, major domestic and foreign companies have to compete with the computer (electronic) control system to improve overall performance and reduce the use of hydraulic components, m

21、achine, reducing the whole size and weight, improve the sensitivity of control and synchronization accuracy. In particular, the manufacturers actively introducing and digesting foreign advanced technology, development of new varieties, improving product technology and quality level, has been part of

22、 the hydraulic lifting platform synchronized at or close to the international level of similar products.Currently used in the automotive repair Hydraulic synchronous lift platform vehicle maintenance plays an important role in synchronous lifting platform ona variety of hydraulic valves, hydraulic c

23、ylinders, hydraulic pump station innovation and improvement, making a hydraulic lifting platform synchronization Smooth running, low noise, fast response, high precision synchronization, for the repair and maintenance of the car plays an irreplaceable role in a wide range prospects. Therefore, the l

24、ifting platform for further research and improvement, optimize system performance and structure to further improve to make up for the shortcomings of existing technology has important significance.The subject of the design of the hydraulic lifting platform main use of theoreticalresearch and design,

25、 through the understanding and study of the hydraulic system,as well as existingcontrol technologies and more in-depth research and development,in the hydraulicsystem components and further understanding and learning ,Combined with the modernization of hydraulic components and automation and control

26、 components within the hydraulic control through traditional high-tech components and control elements of existing comparative and comprehensive application of the traditional hydraulic system, based on the research and design more innovative set of machines , Electricity, liquid in one of the hydra

27、ulic control system, makes the system more stable and faster to achieve the advantages.Hydraulic lift platform system, requires the ability to achieve four-wheeled vehicles in a controlled synchronous lifting height lifting range, to achieve safe and reliable control of the two front, two rear, two

28、revolvers, two rounds of synchronous lifting the right and to ensure synchronous movements accuracy. The hydraulic lift system also must have a fast response speed, hydraulic power units, small size, compact structure, large power weight ratio, ease of manipulation and control, labor-saving convenie

29、nce and easy to implement automated, with overload protection for high reliability requirements system, excellent technical performance, while ensuring synchronous hydraulic lifting platform can be anywhere in the vertical direction on a longer time (60 min or longer) within a reliable locking, the

30、system can work continuously and reliably, the system energy efficient, easy to maintain low cost. Hydraulic lift platform to meet system design requirements, synchronous movements smooth, and the design to achieve the functional requirements, develop the system closed-loop control of hydraulic syst

31、ems, hydraulic systems used to satisfy the synchronization requirements of precision and control to achieve the four-wheeled vehicles in a controlled synchronous lifting height lifting range, to achieve safe and reliable control of the two front, two rear, two revolvers, two rounds of synchronous li

32、fting the right and to ensure the accuracy of synchronous movements.To meet the synchronous lifting hydraulic system, the system needs to have synchronization control device to achieve synchronization. Synchronization of hydraulic system is currently running multiple control methods, mainly mechanic

33、al synchronization method, pump or motor parallel method, double rod cylinder in series, control valve, synchronizer, synchronization control valve circuit, servo and so on.According to the design of machinery and equipment requirements for the realization of a better two-car front-wheel, two rear, two revolvers, two synchronous lifting the right wheel