毕业设计（论文）-铁道液压拨道机设计（全图纸三维）.doc

摘要： HYPERLINK /view/679368.htm \t _blank 铁路轨道，简称 HYPERLINK /view/493194.htm \t _blank 路轨、铁轨、 HYPERLINK /view/267409.htm \t _blank 轨道等。用于 HYPERLINK /view/19293.htm \t _blank 铁路上，并与 HYPERLINK /view/723974.htm \t _blank 转辙器合作，令 HYPERLINK /view/7178.htm \t _blank 火车无需转向便能行走。轨道通常由两条平行的 HYPERLINK /view/55487.htm \t _blank 钢轨组成。钢轨固定放在 HYPERLINK /view/259927.htm \t _blank 轨枕上，轨枕之下为路碴。以 HYPERLINK /view/338859.htm \t _blank 钢铁制成的路轨，可以比其它物料承受更大的重量。轨枕亦称 HYPERLINK /view/1719936.htm \t _blank 枕木，或路枕，功用是把钢轨的重量分开散布，和保持路轨固定，维持路轨的轨距。一般而言，轨道的底部为 HYPERLINK /view/3872383.htm \t _blank 石砾铺成的路碴。路碴亦称 HYPERLINK /view/2509167.htm \t _blank 道碴、碎石或 HYPERLINK /view/259939.htm \t _blank 道床，是为轨道提供弹性及排水功能。铁轨也可以铺在 HYPERLINK /view/23579.htm \t _blank 混凝土筑成的基座上 （在桥上就相当常见） ，甚至嵌在混凝土里。铁路轨道必须经常维修以维持良好运作状态。路轨维修是繁重的工作，以往要花费很多人力来完成，现已逐渐以机器取代。铁路轨道的主要保养维修工作包括有:打磨钢轨 ，改善钢轨的平面及纵面。更换部分或全部钢轨。更换轨枕。捣固、清理、更换及补充道碴。在繁忙的线路上因为列车间距很短，因此铁路营运者多数会以自动化的工程列车进行部分的维护工作，以提高工作效率。全套图纸，加153893706Abstract：The railway track,?referred to as rails,?rail,?rail?etc..?For?the railway,?and in cooperation with the?switch,?so the train can?walk without turning.?Track?usually consists of?two?parallel rails.?Rail fixed on the?sleeper,?the sleeper?under the ballast for the road.?Made of iron and steel rails,?than other?materials?to carry greater weight.?Sleeper,?sleeper,?sleeper?or?road,?rail?weight?function is toseparate the distribution,?and keep track?of fixed,?maintain the track gauge.?In general,?Lu?ballasted track?is arranged at the bottom of the?gravel?paved.Road,?also known as ballast ballast,?gravel or?ballast,?is to provide?flexibility for the track and drainage functions.?The rails?can also?spread on the?base?of concrete.?(the bridge is quite common),?or even embedded in concrete.Railway track?must often?repair?in order to maintain the?good operation?state.Rail?repair?is?hard work,?takes a lot of?manpower to complete?the past,?is nowgradually?replaced?by?machine.?The main?maintenance?of railway track?repairwork?includes:Rail grinding,