A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A travel unit travels in a curved section in an orientation in which a target wheel comes into contact with a target rail, a guide wheel comes into contact with a guide rail, and a non-target wheel does not come into contact with a non-target rail. The control unit changes the rotational speed of a first wheel and a second wheel in the curved section relative to the rotational speed of the first wheel and the second wheel in a straight section in accordance with the ratio of a second length, which is the length of the target rail along a travel path, to a first length, which is the length of the curved section along the travel path at a center portion in a widthwise direction of the travel path.

A travel unit travels in a curved section in an orientation in which a target wheel comes into contact with a target rail, a guide wheel comes into contact with a guide rail, and a non-target wheel does not come into contact with a non-target rail. The control unit changes the rotational speed of a first wheel and a second wheel in the curved section relative to the rotational speed of the first wheel and the second wheel in a straight section in accordance with the ratio of a second length, which is the length of the target rail along a travel path, to a first length, which is the length of the curved section along the travel path at a center portion in a widthwise direction of the travel path.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

Disclosed is a guide module and a driving device having the guide module. The driving device includes a moving unit mounted on a pinion interacting with a rack and moving with the pinion along a trajectory of the rack, and a guide module arranged at at least any one side of the rack, connected to the moving unit, and guiding a movement of the moving unit that moves with the pinion along the trajectory of the rack.

The present invention relates to a bogie structure for a mountain railway car. The bogie structure is configured as follows: a traction motor for driving an axle of mountain railway car is installed on a car body to simplify the bogie structure and to minimized interference between the traction motor and other components constituting the bogie, and a first and a second bearing are respectively inserted and installed between a first and a second axle and a first and a second wheel, so that a first and a second wheel located in one side close to a turning center are rotated less than a first and a second wheel located in the other side opposite thereof and a traveling distance of the wheels located in the turning-centered side is generated corresponding to a length of a turning-centered side railway, whereby the mountain railway car is improved in traveling stability.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a track that guides the delivery vehicles to/from the destination areas, which are positioned along the track. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.