| 摘要 |
<p>A pneumatic cylinder structure comprises a pneumatic cylinder (1) and a control valve device (2), wherein the pneumatic cylinder (1) comprises a gas chamber (11) and pistons (12). Actuation tooth rows (121) engaging with a gear shaft (19) are provided on the pistons (12). When the pistons (12) move, the gear shaft (19) is driven by the actuation tooth rows (121) to rotate so as to switch a valve body. The control valve device (2) is integrally composed of a valve structure portion (21), a solenoid valve structure portion (23) and a switching portion (25). The valve structure portion (21) communicates with the pneumatic cylinder (1) and enables a gas flow from a pneumatic source to flow into the gas chamber (11) for gas storage. The valve structure portion (21) can control the rotation direction of the gear shaft (19) by varying the gas flow direction into/out of the pneumatic cylinder (1). The valve structure portion (21) is controlled by the solenoid valve structure portion (23). The pneumatic cylinder (1) has a fail-safe working mode and a double-actuation working mode. The switching portion can rapidly switch the working mode of the pneumatic cylinder (1). The pneumatic cylinder has a simple structure.</p> |
