| 摘要 |
A vertical conveyor that includes a frame, a carriage, and a drive mechanism. The frame includes a vertical support member, and the carriage is coupled to the frame to carry a load. The carriage is mounted for movement along the vertical support member. The drive mechanism includes a first actuator and a second actuator. The first actuator includes a cylinder and a rod that extends from the cylinder to raise the carriage. The second actuator includes a cylinder and a rod each having lengths greater than lengths of the cylinder and rod of the first actuator. The rod of the second actuator extends from the cylinder of the second actuator to raise the carriage and the cylinder of the first actuator.
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