During travel of the electric vehicle, the charging arm is extended in the vehicle width direction, a positive electrode overhead line of the power supply device and a positive electrode power reception unit of the charging arm are brought into contact at the same time that a negative electrode overhead line of the power supply device and a negative electrode power reception unit of the charging arm are brought into contact, and a power storage device for driving the electric vehicle is charged. A charging head that is the tip section of the charging arm is held within a V-shaped groove to which the positive electrode overhead line and the negative electrode overhead line are attached, thereby minimizing the loss of contact even if the charging arm shakes in the vertical direction as a result of the condition of the road surface, brake operation, or the like.

During travel of the electric vehicle, the charging arm is extended in the vehicle width direction, a positive electrode overhead line of the power supply device and a positive electrode power reception unit of the charging arm are brought into contact at the same time that a negative electrode overhead line of the power supply device and a negative electrode power reception unit of the charging arm are brought into contact, and a power storage device for driving the electric vehicle is charged. A charging head that is the tip section of the charging arm is held within a V-shaped groove to which the positive electrode overhead line and the negative electrode overhead line are attached, thereby minimizing the loss of contact even if the charging arm shakes in the vertical direction as a result of the condition of the road surface, brake operation, or the like.

A multi-level storage structure includes a plurality of vertical supports, a plurality of row spacing members connecting vertical posts positioned laterally relative to each other, a plurality of row rails connecting vertical posts positioned longitudinally relative to each other and configured to support at least one row cart, a plurality of aisle rails extending perpendicular to the plurality of row rails and configured to support at least one aisle cart, and a plurality of pre-formed holes formed in at least one of the vertical supports, row spacing members, row rails, and aisle rails to mount at least one of a lighting system, a fire suppression system, a mobile safety tie off carriage, and at least one support brace to the storage structure. The plurality of pre-formed holes are formed prior to assembly of the storage structure.

A multi-level storage structure includes a plurality of vertical supports, a plurality of row spacing members connecting vertical posts positioned laterally relative to each other, a plurality of row rails connecting vertical posts positioned longitudinally relative to each other and configured to support at least one row cart, a plurality of aisle rails extending perpendicular to the plurality of row rails and configured to support at least one aisle cart, and a plurality of pre-formed holes formed in at least one of the vertical supports, row spacing members, row rails, and aisle rails to mount at least one of a lighting system, a fire suppression system, a mobile safety tie off carriage, and at least one support brace to the storage structure. The plurality of pre-formed holes are formed prior to assembly of the storage structure.

Provided are a contact charging system, a power feeding device, a power receiving device, and a contact charging method that prevent damage to a power feeding terminal and a power receiving terminal, even when the charging power is high power. When charging a high-voltage battery, a power feeding-side motor or a power receiving-side motor is rotated in a state with a power feeding terminal and a power receiving terminal pressed against each other, and power is thereby transmitted from one of the power feeding terminal and the power receiving terminal to the other. In a state with both the power feeding terminal and the power receiving terminal rotated in this manner, electric power is supplied from the power feeding terminal to the power receiving terminal.

Provided are a contact charging system, a power feeding device, a power receiving device, and a contact charging method that prevent damage to a power feeding terminal and a power receiving terminal, even when the charging power is high power. When charging a high-voltage battery, a power feeding-side motor or a power receiving-side motor is rotated in a state with a power feeding terminal and a power receiving terminal pressed against each other, and power is thereby transmitted from one of the power feeding terminal and the power receiving terminal to the other. In a state with both the power feeding terminal and the power receiving terminal rotated in this manner, electric power is supplied from the power feeding terminal to the power receiving terminal.

A conveying car comprises at least one support frame in which at least one driven conveying element is arranged, and a current collector for energizing drive means for driving the at least one conveying element and driving the conveying car; said conveying car is characterized in that same has its own power supply that is independent of the central power supply used for normal operation of the conveying car.

A particle removing arrangement is adapted to remove particles from the upper contact surface of an electric rail in an electric highway by the use of an airflow, where the particle removing arrangement is arranged in front of a current collector of a vehicle, where the particle removing arrangement includes an inlet opening for inlet of air and an outlet opening for outlet of air, where the inlet opening is directed in a forward direction and the outlet opening is directed in a sideway to rearward direction in relation to the driving direction of the vehicle, and where the particle removing arrangement creates a particle removing airflow from a forward movement of the vehicle. Particles can be removed from an electric rail without the use of an external power source. The particles can also be removed in a contact-less manner, such that there is no friction or abrasion between the particle removing arrangement and the electric rail.

A particle removing arrangement is adapted to remove particles from the upper contact surface of an electric rail in an electric highway by the use of an airflow, where the particle removing arrangement is arranged in front of a current collector of a vehicle, where the particle removing arrangement includes an inlet opening for inlet of air and an outlet opening for outlet of air, where the inlet opening is directed in a forward direction and the outlet opening is directed in a sideway to rearward direction in relation to the driving direction of the vehicle, and where the particle removing arrangement creates a particle removing airflow from a forward movement of the vehicle. Particles can be removed from an electric rail without the use of an external power source. The particles can also be removed in a contact-less manner, such that there is no friction or abrasion between the particle removing arrangement and the electric rail.

A conductor line for supplying at least one electric load which can be moved on the conductor line in the longitudinal direction of the conductor line includes at least one conductor strand which runs in the longitudinal direction and which has an electrically conductive profiled conductor section for contacting a sliding contact of the load, and at least one signal transmission device which runs in the longitudinal direction. A current collector for the load has at least one sliding contact for contacting the profiled conductor section of the conductor strand of the conductor line and at least one antenna for transmitting data to a conductor line signal transmission device, which moves in the longitudinal direction. A conductor line system includes such a conductor line and current collector. An aim is to allow a compact and material-saving design as well as a good fault-tolerant transmission. This is achieved by a conductor line in which the signal transmission device and the profiled conductor section are designed as one component, by a current collector in which the sliding contact and the antenna are designed as one component, and by a conductor line system including such a conductor line and such a current collector.