6-1
6
=
(D)
78.54%
[ P = F/A ][ P = F/A ][ P = F/A ][ P = F/A ][ P = F/A ]
6-2
0.7854
= 2 x 0.7854
= D2
4
( )
(in) (in2) in3
(cm3)
= x
(in3) (in2) (in)
(cm3) (cm2) (cm)
2 in (5.08 cm)
1 in (2.54 cm)
20 in 3
(327.8 cm3)
20 in3 (327.8 cm3)
( )
6-3
= gpm x 231
(in/min) (in2)
= Lpm x 0.1667
(m/sec) (cm2)
lb.in. (Nm)
= x
(lb.in.) (lbs) ( in.)
(Nm) (N) (m)
50 lbs (222 N)
10 in. (0.254
m) 500 in.lbs (56.5 Nm)
50 lbs (222 N) 15 in (0.38
m) 750in.lbs (84.6
Nm)
= psi x (in3)
(in.lbs) 2
= bar x (cm3)
(Nm) 20
= gpm x 231
(rpm) (in3/rev)
= Lpm x 1000
(rpm) (cm3/rev)
6-4
6-5
hp= ft.bls./ J/ =W
3
3
hp W
550 lbs (2442 N)
1 ft (0.30 m)
1 hp (746 W)
(550 ft.lbs /746 J)
2 hp (1490 W)
550 ft.lbs (746 J)
1 hp (746 W)
ft m lbs N
psi bar gpm Lpm
gpm psi ft lbs ( Lpm bar m
N)
hp = gpm x psi x 0.000583
W = hp x 746
W = 5/3 Lpm x bar
1 hp
GPM X PSI
0.000583
6-6
(hp) = rpm x (in.lbs)
63025
(W) = rpm x (Nm)
9543
63,025
6-7
85 100
5000 in.lbs (565 Nm)
/
/
90 180 360 /
52,000,000 in.lbs (5,876,000
Nm)
45,000,000 in.lbs (
5,085,000 Nm)
90
280 200
500,000 in.lbs (Nm)
6-8
90o 180o
270 360 1,000,000 in.lbs
(13,000 Nm)
23,000 in.lbs
(2599 Nm)
1800
gpm (L/min)
gpm(L/min)
gpm (L/min)
psi (bar)
, psi
gpm 0.000583 psi
gpm
rpm 63,025 rpm
GPM
= gpm x 231
( in.min.) (in2)
(m/s) = (Lpm/cm2) x 0.1667
= gpm x 231
(rpm) (in3/rev)
(rpm) = l/min x 1000
ml / rev
PSI
(lbs) = psi x (in2)
(N) = 10 x bar x (cm2)
(in.lbs) = psi x (in3)
2
(Nm) = bar x (cm3)
20
(hp) = gpm x psi x .000583
(Watts) = 5/3 x Lpm x bar
(hp) = rpm x (lb. in.)
63025
(kW) = rpm x (Nm)
9543
6-9
(25 )
1. 3 in 7.62 cm , 16 in (40.64 cm) 18 gpm (68.22 lpm)
2. 13 in3 (213 cm3) 240 psi (16.55 bar)
3. 8 in 20.32 cm 36 in (0.9 m)
4. 800 rpm 200 in.lbs (2.25 Nm)
5. 10 in 25.4 cm 24 in (0.609 m) 78,540 lbs (348717.6 N)
本文档为【06_液压执行机构】，请使用软件OFFICE或WPS软件打开。作品中的文字与图均可以修改和编辑，
图片更改请在作品中右键图片并更换，文字修改请直接点击文字进行修改，也可以新增和删除文档中的内容。
该文档来自用户分享，如有侵权行为请发邮件ishare@vip.sina.com联系网站客服，我们会及时删除。
[版权声明] 本站所有资料为用户分享产生，若发现您的权利被侵害，请联系客服邮件isharekefu@iask.cn，我们尽快处理。
本作品所展示的图片、画像、字体、音乐的版权可能需版权方额外授权，请谨慎使用。
网站提供的党政主题相关内容(国旗、国徽、党徽..)目的在于配合国家政策宣传，仅限个人学习分享使用，禁止用于任何广告和商用目的。
浙公网安备 33021202002483