【机械类文献翻译】液压与气压传动.doc

The Features and Development History and Application of Hydraulic and Pneumatic Transmutation
advantages of hydraulic transmission
1) A hydraulic system can produce higher power than electrical equipment under the same volume . The hydraulic equipment system has smaller volume , light , high power consistency pact configuration at a given power . The volume and weight of a hydraulic motor are about 12% of an electric motor .
2) Hydraulic equipment has a good working stability . It is because of light , less inertia , quick response : the hydraulic equipment can realize celerity start-up , brake and frequent change in motion direction .
3) The hydraulic transmission can reach a wide range of speed regulation (with the range of 1:2000), and the speed can also be regulated during the work processing .
4) The hydraulic transmission can easily realize automation and the pressure , flow rate and the flow direction can be regulated and controlled . If bine it with electric , electron or pneumatic control systems , a plex transmission system with remote control can be realized .
5) The hydraulic system can protect from over-load easily , which cannot be done by electricity or machine equipment .
6) Because of standardization , series , and all-purpose application ; the hydraulic system is easier in design , fabrication and application .
7) The hydraulic system is easier