德國（REXROTH）雙活塞氣缸%道窖BOSCH塑料軟管

德國（REXROTH）雙活塞氣缸活塞桿端部的拉鉤間有一空行程s1，實現空程快速趨近，然后再帶動液壓缸活塞，通過節流阻尼，實現慢進。返程時也是先走空行程s1，再與液壓活塞一起運動，通過單向閥，實現快退。
表42.2-3氣-液阻尼缸調速特性及應用 調速方式 結構示意圖 特性曲線 作用原理 應用
雙向節流調速在氣-液阻尼缸的回油管路裝設可調式節流閥，使活塞往復運動的速度可調并相同適用于空行程及工作行程都較短的場合（s＜20mm）
單向節流調速將一單向閥和一節流閥并聯在調速油路中?；钊蛴疫\動時，單向閥關閉，節流慢進；活塞向左運動時，單向閥打開，不經節流快退。適用于空行程較短而工作行程較長的場合
快速趨近單
向節流調速將液壓缸的?點與α點用管路相通，活塞開始向右運動時，右腔油經由fgea回路直接流入α端實現快速趨近，當活塞移過?點，油只能經節流閥流入α端，實現慢進，活塞向左運動時，單向閥打開，實現快退。由于快速趨近，節省了空程時間，提高了勞動生產率。

德國（REXROTH）雙活塞氣缸分普通型和快排型兩種。
1）普通型沖擊氣缸普通型沖擊氣缸的結構見圖42.2-10。與普通氣缸相比，此種沖擊氣缸增設了蓄氣缸1和帶流線型噴氣口4及具有排氣孔3的中蓋2。其工作原理及工作過程可簡述為如下五個階段（見圖42.2-11）：
*階段：復位段。見圖42.2-10和圖42.2-11a，接通氣源，換向閥處復位狀態，孔A進氣，孔B排氣，活塞5在壓差的作用下，克服密封阻力及運動部件重量而上移，借助活塞上的密封膠墊封住中蓋上的噴氣口4。中蓋和活塞之間的環形空間C經過排氣小孔3與大氣相通。zui后，活塞有桿腔壓力升高至氣源壓力，蓄氣缸內壓力降至大氣壓力。
第二階段：儲能段。見圖42.2-10和圖42.2-11b，換向閥換向，B孔進氣充入蓄氣缸腔內，A孔排氣。由于蓄氣缸腔內壓力作用在活塞上的面積只是噴氣口4的面積，它比有桿腔壓力作用在活塞上的面積要小得多，故只有待蓄氣缸內壓力上升，有桿腔壓力下降，直到下列力平衡方程成立時，活塞才開始移動。
式中 d??中蓋噴氣口直徑（m）；

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R900888541 REPARATURSATZ PGF2-2X/011...
R900888540 REPARATURSATZ PGF2-2X/008...
R900888539 REPARATURSATZ PGF2-2X/006...
R900888538 REPARATURSATZ PGF1-2X/5,0...
R900888537 REPARATURSATZ PGF1-2X/4,1...
R900888536 REPARATURSATZ PGF1-2X/3,2...
R900888535 REPARATURSATZ PGF1-2X/2,8...
R900888534 REPARATURSATZ PGF1-2X/2,2...
R900888529 REPARATURSATZ PGF1-2X/1,7...
R900887490 DICHTUNGSSATZ PGF1-2X/..V