【精品液壓培訓(xùn)資料】派克：液壓系統(tǒng)基礎(chǔ)知識(shí)(參考版)
2025-08-04 16:18本頁面
【正文】 CHAP TER 1AN INTR OD UC TIO N T O HYD RA ULIC S1. Th e b ottl e i s f ill edwi th l iqu id , w hic h i sno t co mp re ssi ble2. A 10 lb. forc e i s ap pl ied to th e sto pp er w ith a su rfa ce a re a o f on e s qua re in ch3. Th is res ul t s i n 10 l b o f for ce on ev ery sq ua re i nc h of sur fac e ar ea i n th e c on t ai ne r4. If the bo ttom ha s an are a of 20 sq . in . an d ea ch sq ua re in ch is pu sh ed on by 10 lb s. of for ce , the ent ire bo ttom of the co nt ai ner re cei ve s 20 0 lb s pus hF igu re 11 P re ssu re (f orc e p er u ni t ar ea) is tran sm itte d th ro ugh ou t a c on fin ed flui dCO PY RI GH T (2022) EA T ON CO R POR A TIO NC10 lb s1. An i nput force o f 10 lbs on a one square inch a rea2. Develop s a pressure of 10 pounds per square inch ( p si) thr oughout t he cont ainer3. This pressure w il l supporta 100 lb weight if th is is a 10 sq in p iston4. The force s are p roport ional to th e piston ar eas10 lbs1 sq in100 lbs10 sq in=A. SIM PLE HYD R AU LIC PRESSFigure 12 ( A) Pascal 抯 pr incipl e applie d to t he hydraulic pressC OPYRIGH T (2 001) EA T ON C ORPORA TIONC1 . A n i n p u t f o r c e o f 1 0 l b s h e r e3. if this arm is10 times as long as4. this arm2. will balance 100 l bs h ereB. SIMP LE MECHANICA L LE VER10 0 lbsFigure 12 (B) Similarity betwe en simple press and me cha nical leve rCO PYR IGHT ( 200 1) EA T ON COR POR A TIO NC10 lbs1. M ovin g t he sma ll p isto n 10 indisplaces 10 cu in of liquid(1 sq in x 1 0 i n = 10 cu in)2. 10 cu in of liqu id will m ovethe l arge r p isto n o nly on e i nch(1 0 in sq x 1 i n = 10 cu in)10 in1 in3. Th e e nerg y tra nsf er he re eq ual s10 lbs x 10 in or 10 0 in l bs4. Th e e nerg y tra nsf er he re a lso 10 0 in lbs(1 in x 1 00 lbs = 10 0 in lbs )is 100 lbsF i g u r e ( 1 3 ) E n e r g y c a n n e i t h e r b e c r e a t e d n o r d e s t r o y e dCOP YRIG HT (2 0 01) EA T ON CO RPO RA TI ONCLoadPum pElectricMotor1 The p ump pushes the hydrauli c fluid into the lines.2. Lines carry the fluid to actuators which are pushed internally to produce a mechanica l output which moves the loadPiston amp。 RodT o Reservoir3. S ome actuators operate in a strai ght line (linear actuat ors). They are called rams o r cylinders. They are used to lif t weight, exert for ce, clamp, ect.A. Linear Actuato rFig 14 (A ) Linear and rot ary actuatorC OPYR I GHT (2022 ) E A T ON CO R P ORA TIONCFig 14 (B ) Linear and ro t ary act uatorCOP YRIG H T (200 1) EA T ON C ORP OR A TI ONCPUM PElectricMotorPum p4. Rot ary act uators or m otors give the s ystem rot ating output. The y c an be conn ected to pull eys, gears, rack and pinion s, c onveyors, ect .Rot aryDriveShaf tMotorB. R o t ary Ac tua torL oadPu m pElectricMotorA. Ma x imu m S pe ed1. If the pump
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