2.300M系列鋼廠級鼓式剎車300M Mill Duty Brakes                                          下載down load

     2-3.說明INTRODUCTION
     2-4.訂購資料 ORDERING INFORMATION
     2-5.訂購資料 ORDERING INFORMATION
     2-6.MBE 型直流磁鐵操作剎車
　　    TYPE MBE DC MAGNET OPERATED BRAKES
     2-9.MBT 3相AC油壓致動剎車
          TYPE MBT 3-PHASE AC HY-THRUST OPERATED BRAKES
     2-10.MBT和MBTE 3相AC油壓致動剎車
　       TYPE MBT & MBTE 3-PHASE AC HY-THRUST OPERATED BRAKES
　  2-11.MBT和MBTE尺寸和額定能力 MBT & MBTE DIMENSIONS AND RATING
     2-12.BM型.油壓(踏板式)剎車Type BM HYDRAULIC (PEDAL) OPERATED BRAKES
     2-13.BM型油壓(踏板式)剎車選用和使用 Type BM Selection and Application
     2-14.BEM型DC電磁-油壓鼓式剎車
　         Type BEM DC MAGNETIC-HYDRAULIC OPERATED SHOE BRAKES
     2-15.BEM型DC電磁-油壓鼓式剎車
　         Type BEM DC MAGNETIC-HYDRAULIC OPERATED SHOE BRAKES
      2-16.BEM型DC電磁-油壓鼓式剎車尺寸表和額定能力
　          The Dimensions and Rating of Type BEM SHOE BRAKES
      2-17.BTM和BTME油壓-3相AC油壓致動剎車
             MTM & BTME HYDRAULIC-3PHASE AC HY-THRUST OPERATED BRAKES
      2-18.BTM和BTME油壓-3相AC油壓致動剎車
             MTM & BTME HYDRAULIC-3PHASE AC HY-THRUST OPERATED BRAKES
      2-19.BTM和BTME油壓致動剎車尺寸表和額定能力
              DIMENSIONS & RATING FOR TYPE MTM & BTME AC HY-THRUST BRAKES
      2-20.手動油壓剎車系統-BM , BEM , BTM,BTME 型
             MANUAL HYDRAULIC BRAKE SYSTEM-TYPE BM , BEM , BTM & MTME BRAKES
      2-21.手動油壓剎車系統 MANUAL HYDRAULIC BRAKE SYSTEM    
      2-22.剎車鼓-ABW型BRAKE WHEELS-TYPE ABW
      2-23.聯軸器BRAKE WHEELS COUPLINGS
      2-24.聯軸器尺寸表, DIMENSIONS Of BRAKE WHEELS COUPLINGS
      2-25.DC電磁剎車整流器和控制器-BE和BEM型
             DC MAGNET BRAKE RECTIFIERS/CONTROLLERS
      2-26.剎車蓋和保護箱BRAKES COVERS/ENCLOSURES

The complele master cylinder assembly. as shown in Fig. 2 consÎsts of: the master cylinde，r  a foolpeda，l  a mounting base

and Ihe operating línkage.

The master cylinder is a two-stage unit. containing one large diameter piston and one smaller diameter piston (Reference Fìg. 2).Thelarge diameter piston displaces a substantial volume of fluid wlth a relailvely small amount of 100t pedal

lravel. ThÎs volume of 11uid is forced oulthrough  the passage

in Ihe  fixed pislon rod loIhe wheel cyllnder and quickly moves

Ihe brake shoes Inlo conlaclwilh the brake wheel. Resislance

10 fu付ler  movement of the shoe causes pressure 10 bulld in lhe sys em.This pressure Is sensed 1n the metered relief

valve. At a predelermined pressure level. the relief valve Iffts

off ils lower sea，l venilng the lower pressure chamber lnto the

reservolr chamber. High pressure exlsls 1n the high pressure

cylinder chamber and the low pressure cup flares out and seals against Ihe walls of the high pressure cylinder chamber.

The small pislon ls now up against Ihe end of the tixed pislon rod. and conljnued movemenlof the large píston effectively shortens  he length in height of the high-pressure  cylinder

chamber. The pressure in Ihis chamber increases as  he

chamber volume decreases and is Iransmitled through lhe fixed piston rod passage and out to the brake wheel cylínder.

Due 10 the smaller area on Ihe piston，pressure  developed

wilh a glven amounlof fOOIpedal forceis much grealer than pressure developed by the large pislon，In summary，Ihe large

diameter piston serves 10 move Ihe brake  shoes rapidly into con旬Clwilh Ihe brake wheel whiie using up little of the lolal pedal travel. The small piston serves 10 develop high pressure for positive braking.