Lifting apparatus

A transportation vehicle comprising:

• a body portion;
• and
• a lifting device disposed on the body portion, the lifting device including:
• an actuator configured to move a contact member between a lowered position and a raised position, and
• an engagement member including a shaft connected at a first end to a nut portion of the actuator and having a bearing rotatably mounted on a second end of the shaft, the second end of the shaft being away from the first end and being disposed in a first channel that permits in a first mode of operation of the lifting device, a movement of the shaft along a length of the first channel and restricts movement of the shaft in a direction that is perpendicular to the length of the first channel,
• wherein in the first mode of operation of the lifting device, the actuator moves the contact member from the lowered position to the raised position without rotating the contact member about a reference axis, and
• wherein in a second mode of operation of the lifting device,
• the actuator permits rotational motion of the contact member about the reference axis from the raised position to a modified raised position, and
• the actuator restricts linear movement of the contact member in a direction that is parallel to the reference axis.