< CylinderÀÇ Èû(Power)°è»ê°ú °ø±â ¼Ò¸ð·® >
1) Piston½Ä Cylinder PowerÀÇ °è»ê
ÀÌ·ÐÀûÀÎ Èû (Fth : N) = À¯È¿ ÇǽºÅæ ¸éÀû (A : m©÷) x ÀÛµ¿¾Ð·Â (P : kPa.10ÀÇ5½Â N/m©÷)
½ÇÁ¦ÀÇ Èû (¸¶ÂûÁ¶°Ç°ú ¾Ð·Â¹üÀ§, ÀÛ¾÷Á¶°ÇÀ» °í·ÁÇÑ) - ´Üµ¿½Ã¸°´õ Fn = A x P - ( Fr + Ff ) - º¹µ¿½Ã¸°´õ (ÀüÁø¿îµ¿) Fn = A x P - Fr - º¹µ¿½Ã¸°´õ (ÈÄÁø¿îµ¿) Fn = A' x P - Fr ¿©±â¼ Fn : À¯È¿ÇǽºÅæ Èû (N) A : À¯È¿ÇǽºÅæ ¸éÀû (m©÷) = D2/4 A' : À¯È¿ÇǽºÅæ ¸µÀÇ ¸éÀû (m©÷) = 3.14/4 (D©÷ - d©÷) P : ÀÛµ¿¾Ð·Â ( kPa.10ÀÇ5½Â N/m©÷) Fr : ¸¶Âû·Â (3 ~ 20%) (N) Ff : ³»ÀåµÈ ½ºÇÁ¸µÀÇ Èû (N) D : ½Ã¸°´õ Á÷°æ (mm) d : ÇǽºÅæ ·Îµå Á÷°æ (mm) (¿¹Á¦) D = 50 mm, d = 12 mm, A = 19.625 cm©÷, A'= 18/5 cm©÷, Fr = 10 % ÀÏ ¶§¿¡ ½Ã¸°´õÀÇ Èû "Fn"À» ±¸Ç϶ó?. (Ç®ÀÌ) - ÇǽºÅæ ¸éÀû A = 3.14/4 x D©÷ = 3.14/4 x 5 cm x 5 cm = 19.625 cm©÷ - ÇǽºÅæ ¸µ ¸éÀû A = 3.14/4 x (D©÷ - d©÷) = 3.14/4 x (25cm©÷ x 1.44cm©÷ )= 18.5 cm©÷ - ÀüÁø¿îµ¿½ÃÀÇ ÀÌ·ÐÀûÀÎ Èû Fth = A x P = 19.625 x 10ÀÇ -4½Â m©÷ x 6 x 10ÀÇ 5½Â N/m©÷ = 1177.5 N (Áï : ¸¶Âû·Â 10%ÀÓÀ¸·Î Fr = 117.75 N ÀÌ µÈ´Ù. - ÀüÁø¿îµ¿½ÃÀÇ À¯È¿ ÇǽºÅæÀÇ Èû Fn = A x P - Fr = 1177.5 - 117.75 ¡Ö 1060 N - ÈÄÁø¿îµ¿½ÃÀÇ ÀÌ·ÐÀûÀÎ Èû Fth = A' x P = 18.5 x 10ÀÇ -4½Â m©÷ x 6 x 10ÀÇ 5½Â N/m©÷ ¡Ö 1110 N (Áï : ¸¶Âû·Â 10%ÀÓÀ¸·Î 111N ÀÌ µÈ´Ù) - ÈÄÁø¿îµ¿½ÃÀÇ À¯È¿ ÇǽºÅæÀÇ Èû Fn = A' x P - Fr = 999 N
2) Piston½Ä CylinderÀÇ °ø±â ¼Ò¸ð·® °è»ê
- ´Üµ¿ ½Ã¸°´õ °ø±â ¼Ò¸ð·® °è»ê½Ä : V = s x n x d/4 x ¾ÐÃàºñ ( §¤ /min ) - º¹µ¿ ½Ã¸°´õ °ø±â ¼Ò¸ð·® °è»ê½Ä : V =£û(S x D2/4) + (S x D2- d2/4) £ýx n x ¾ÐÃàºñ ( §¤ /min ) ¿©±â¼ V : °ø±â·® ( §¤ /min) S : ÇàÁ¤°Å¸® (cm) n : 1ºÐ´çÀÇ ÇàÁ¤¼ö (¿¹Á¦) ½Ç¸°´õ ³»°æ : 50 mm¥Õ, ÇàÁ¤°Å¸® 100 mm, º¹µ¿½Ç¸°´õ, ·ÎµåÁ÷°æ 12 mm¥Õ, ºÐ´çÇàÁ¤¼ö 10, ÀÛµ¿¾Ð·Â 600 kPaÀÌ´Ù. À̽ø°´õÀÇ °ø±â¼Ò¸ð·®Àº ¾ó¸¶Àΰ¡? (Ç®ÀÌ) - ¾ÐÃàºñ : (101.3 kPa + 600 kPa) / 101.3 kPa = 6.9 - °ø±â ¼Ò¸ð·® : V =£û S x D2/4 + S x (D2 -d2/4) £ýx n x ¾ÐÃàºñ V =£û 10 mm x (25 cm x 2 ) /4 £ý+ £û10 cm x (25 cm - 1.44 cm©÷ x 2) /4 x 3.14£ýx 10 minÀÇ -1½Â x 6.9 (¾ÐÃàºñ) = 196.25 cm©ø + 184.94 cm©ø x 69 = 26302.8 cm©ø/ min = V = 26.3 ( §¤ /min)
3) CylinderÀÇ ÇàÁ¤°Å¸®¿¡ ´ëÇÑ »ó½Ä
- °ø¾Ð½Ç¸°´õÀÇ ÇàÁ¤°Å¸®´Â 2000mm¸¦ ³Ñ¾î¼´Â ¾ÈµÈ´Ù. ½Ç¸°´õ Á÷°æÀÌ Å©°í ÇàÁ¤°Å¸®°¡ Å©°Ô µÇ¸é ³Ê¹« ¸¹Àº °ø±â¸¦ ¼ÒºñÇÏ°Ô µÇ¾î ºñ°æÁ¦ÀûÀÌ´Ù. ÇàÁ¤°Å¸®°¡ Å©°ÔµÇ¸é ÇǽºÅæ ·Îµå¿Í ÆÄÀÏ·ÎÆ® º£¾Æ¸µ¿¡ Å« ÀÀ·ÂÀÌ ÀÛ¿ëÇÏ°Ô µÇÀ¸·Î Á±¼(bucking)ÀÇ À§ÇèÀ» ÇÇÇϱâ À§ÇÏ¿© ÇǽºÅæ ·ÎµåÀÇ Á÷°æÀ» ´õ Å©°ÔÇØ¾ß ÇÏ´Â ¹®Á¦°¡ µû¸¥´Ù.. ¶ÇÇÑ Çà°Å¸®°¡ Ä¿Áö¸é º£¾Æ¸µ »çÀÌÀÇ °£°ÝÀÌ Ä¿Áö°Ô µÇ¹Ç·Î ÇǽºÅæ ·ÎµåÀÇ ¾È³»ÀåÄ¡(guidance)¸¦ ¼³Ä¡ÇØ¾ß ÇÏ´Â ¹®Á¦µµ º´ÇØÇØ¾ß ÇÑ´Ù.
4) CylinderÀÇ ¼Óµµ¿¡ ´ëÇÑ »ó½Ä
- °ø¾Ð½Ç¸°´õÀÇ ÇǽºÅæ ¼Óµµ´Â ¹Ý·Â°ú °ø±â¾Ð·Â, ÆÄÀÌÇÁÀÇ ±æÀÌ, ¸¶Áö¸· Á¦¾î ¿ä¼Ò¿Í ÀÛ¾÷¿ä¼Ò »çÀÌÀÇ ´Ü¸éÀû ¹× ¸¶Áö¸· Á¦¾î¿ä¼Ò¸¦ Åë°úÇÏ´Â À¯·®¿¡ Á¿ìµÇ¸ç Äí¼Ç(cushion)µµ ¼Óµµ¿¡ ¿µÇâÀ» ¹ÌÄ¡°Ô µÈ´Ù. Ç¥ÁØ ½Ç¸°´õÀÇ °æ¿ì Æò±Õ¼Óµµ´Â 0.1 ~ 0.5 m/sec Á¤µµÀ̸ç Ư¼öÇÑ ½Ç¸°´õ(Ãæ°Ý ½Ç¸°´õ)ÀÇ °æ¿ì¿¡´Â 10 m/secÁ¤µµÀÇ ¼Óµµ±îÁö ¾òÀ» ¼ö ÀÖ´Ù. ¶ÇÇÑ ÇǽºÅæÀÇ ¼Óµµ´Â À¯·®Á¶Àý¹ëºê¿Í ±Þ¼Ó ¹è±â¹ëºê·Î Á¶ÀýÇÒ ¼ö ÀÖ´Ù.
¢À ½Ã¸°´õ( Clinder)ÀÇ °ø±â ¼Ò¿ä·® (n§¤ / min)
ÁÖ) 1) ¾Æ·¡ÀÇ °ø±â À¯·®Àº ½Ã¸°´õ ½ºÆ®·Î±× 1cm, 1ºÐ°£, 1ȸ µ¿ÀÛ½ÃÀÇ °ø±â¼Ò¿ä·®ÀÓ |
¤·¤¤ 2) ¿Õº¹¿îµ¿ ½Ã¸°´õÀÇ °æ¿ì´Â ¾Æ·¡ À¯·® x 2¹è ÀÓ |
³» °æ (¥Õmm) |
¾Ð·Â °ÔÀÌÁö (Kg / cm2) |
2.0 |
4.0 |
5.0 |
6.0 |
7.0 |
8.0 |
40 |
0.0370 |
0.0613 |
0.0735 |
0.0855 |
0.0980 |
0.1101 |
50 |
0.0578 |
0.0957 |
0.1148 |
0.1337 |
0.1530 |
0.1720 |
60 |
0.0832 |
0.1378 |
0.1652 |
0.1925 |
0.2200 |
0.2480 |
70 |
0.1132 |
0.1875 |
0.2250 |
0.2620 |
0.3000 |
0.3370 |
80 |
0.1480 |
0.2450 |
0.2940 |
0.3420 |
0.3920 |
0.4410 |
90 |
0.1872 |
0.3100 |
0.3720 |
0.4330 |
0.4960 |
0.5570 |
100 |
0.2310 |
0.3830 |
0.4590 |
0.5350 |
0.6120 |
0.6890 |
110 |
0.2800 |
0.4640 |
0.5560 |
0.6470 |
0.7400 |
0.8330 |
120 |
0.3330 |
0.5510 |
0.6610 |
0.7700 |
0.8820 |
0.9910 |
130 |
0.3910 |
0.6470 |
0.7760 |
0.9040 |
1.0330 |
1.1630 |
140 |
0.4530 |
0.7500 |
0.9000 |
1.0840 |
1.2000 |
1.3500 |
150 |
0.5200 |
0.8610 |
1.0330 |
1.2030 |
1.3780 |
1.5500 |
160 |
0.5920 |
0.9800 |
1.1740 |
1.3700 |
1.5660 |
1.7620 |
170 |
0.6680 |
1.1070 |
1.3270 |
1.5450 |
1.7700 |
1.9900 |
180 |
0.7490 |
1.2400 |
1.4870 |
1.7320 |
1.9800 |
2.2300 |
190 |
0.8350 |
1.3800 |
1.6570 |
1.9300 |
2.2100 |
2.4850 |
200 |
0.9250 |
1.5300 |
1.8350 |
2.1400 |
2.4500 |
2.7500 |
230 |
1.2220 |
2.0300 |
2.4300 |
2.8300 |
3.2400 |
3.6500 |
250 |
1.4400 |
2.3900 |
2.8700 |
3.3400 |
3.8200 |
4.3000 |
300 |
2.0800 |
3.4500 |
4.1300 |
4.8100 |
5.5000 |
6.2000 |
350 |
2.8300 |
4.6900 |
5.6300 |
6.5500 |
7.5000 |
8.4400 | |