气动马达工作原理.docVIP

气动马达工作原理 气动马达是一种作连续旋转运动的气动执行元件， 是一种把压缩空气的压力能转换成回转机械能的能量转换装置， 其作用相当于电动机或液压马达， 它输出转矩， 驱动执行机构作旋转运动。 在气压传动中使用广泛的是叶片式、 活塞式和齿轮式气动马达。 ※活塞式气动马达的工作原理 主要由：马达壳体、连杆、曲轴、活塞、气缸、配气阀等组成。压缩空气进入配气阀芯使其转动，同时借配气阀芯转动，将压缩空气依次分别送入周围各气缸中，由于气缸内压缩空气的膨胀，从而推动活塞连杆和曲轴转动，当活塞被推至“下死点”时，配气阀芯同进也转至第一排气位置。经膨胀后的气体即自行从气缸经过阀的排气孔道直接排出。同时活塞缸内的剩余气体全部自配气阀芯分配阀的排气孔道排出，经过这样往复循环作用，就能使曲轴不断旋转。其功主要来自于气体膨胀功。 Piston pneumatic motor principle of work Mainly consists of: motor shell, connecting rod, crankshaft, piston and cylinder, valve, etc. Compressed air into the air with its core, with rotation by air, will be the core of compressed air into the surrounding air cylinder respectively, due to the expansion of compressed air in cylinder, so as to promote the piston and crankshaft connecting, when the piston is pushed down dead spots , with the core with air exhaust to first place. The expansion of the gas automatically from the exhaust duct cylinder valve directly after discharge. While the residual gas piston cylinder valve core with all the vent duct, corundum, through such reciprocating cycle can make the crankshaft constantly rotating. Its function mainly comes from the gas expanding power. ※叶片式气动马达的工作原理 如图所示是双向叶片式气动马达的工作原理。 压缩空气由A孔输入，小部分经定子两端的密封盖的槽进入叶片底部(图中未表示)，将叶片推出，使叶片贴紧在定子内壁上，大部分压缩空气进入相应的密封空间而作用在两个叶片上。由于两叶片伸出长度不等，因此，就产生了转矩差，使叶片与转子按逆时针方向旋转，作功后的气体由定子上的孔B排出。 ? 若改变压缩空气的输入方向（即压缩空气由B孔进入， 从孔A孔排出） 则可改变转子的转向。 图-1双向旋转的叶片式马达 (a) 结构； (b) 职能符号 Vane pneumatic motor principle of work As shown is two-way vane pneumatic motor principle of work. Compressed air from A small hole, the input of the stator slots on both ends of the hermetic seal (FIG leaf base into not), will adhere to leaf blade on the wall of the stator, compressed air into the corresponding seal space and function in two blades. Because the two blades, therefore, stretch produced the torque, according to the rotor blades and reactive counter-clockwise after gas holes in the stator by B. If the change of compressed ai