【正文】 .......................................................................... 28 本章小結(jié) ................................................................................................. 28 第 4章 病理床液壓站的設(shè)計 .......................................................................... 29 油箱 的設(shè)計 ............................................................................................. 29 液壓油箱容積的確定 ...................................................................... 29 油箱的結(jié)構(gòu)設(shè)計 .............................................................................. 30 液壓泵組的結(jié)構(gòu)設(shè)計 ............................................................................. 31 布置方式 .......................................................................................... 31 連接和安裝方式 .............................................................................. 31 V 防振降噪措施 .................................................................................. 32 本章小結(jié) ................................................................................................. 32 結(jié) 論 ................................................................................................................ 33 致 謝 ................................................................................................................ 34 參考文獻(xiàn) ............................................................................................................ 35 附錄 A ................................................................................................................ 36 VI CONTENTS Abstract ...............................................................................................................II Chapter 1 Introduction ...................................................................................... 1 Summary of the Hydrauliic System ........................................................... 1 The Research of Pathological Bed ........................................................... 2 The Meaning and Purpose of the Research ................................................ 2 Chapter 2 The Design of Pathological Bed Hydraulic Servo System ............ 4 Design Requirements ................................................................................. 4 Pathological Bed Hydraulic Actuator Load Force Calculation .................. 4 Analysis of the Work ........................................................................... 4 Load of the Head Movement............................................................... 5 Load of the Knees Bent ....................................................................... 6 Load of the Trunk Movement.............................................................. 7 System Programming ................................................................................. 8 The Choice of Implementing Ageny ................................................... 8 The Choice of Speed Control Loop..................................................... 8 The Choice of Trading to the Looop ................................................... 8 The Choice of Hydraulic Source ......................................................... 8 Sequence of Movement .............................................................................. 8 The Main Calculation of Pathological Bed Hydraulic System ................ 10 Load Force of the Hydraulic Cylinder Calculation ........................... 10 Hydraulic Cylinder Pressure and Back Presssure of Hydraulic Cylinder Back to the Oil Chamber ............................................................. 11 The Main Parameters of Hydraulic Cylinder .................................... 11 The Determination of Hydraulic Cylinder of the Actual Working.... 15 Hydraulic Cylinder of the Actual Traffic .......................................... 15 The Output Power of the Hydraulic Cylinder ................................... 15 Choice of Hydraulic Components ............................................................ 16 The Choice of Hydraulic Pump......................................................... 16 VII The Determination of the Motor Power ............................................ 17 The Choice of Hydraulic Valves ....................................................... 18 The Determination of Pipe Sizes....................................................... 19 The Determination of the Effective Tank Volume............................. 19 The Selection of the Hydraulic Oil ................................................... 20 Pathological Bed Hydraulic System Performance Calculation................ 20 Hydraulic System Pressure Loss ....................................................... 20 System Temperature Rise Checking.................................................. 22 Chapter Summary..................................................................................... 23 Chapter 3 Design of Pathological Bed with the Basic Dimensions of Hydraulic Cylinders..................................................................... 24 The Determine of Hydraulic Cylinder Size.............................................. 24 Hydraulic Cylinder Bores and Piston Rod Diameter ........................ 24 Cylinder Wall Thickness Calculation ................................................ 24 Cylinder Outer Diameter of the Calculation ..................................... 24 The Determination of Hydraulic Cylinder Stroke ............................. 24 The Determination of Minimumoriented Length .............................. 25 The Determination of Cylinder Length ............................................. 26 Design of the Structural of Hydraulic Cylinder ....................................... 27 Conn