Electrically-driven dump truck

1. An electrically-driven dump truck that involves the use of resistors to convert electric power generated during retarder braking operation into heat energy, the dump truck comprising:

a body frame having front and rear wheels attached thereto;

a support base mounted on an upper front section of the body frame;

a cab mounted on an upper left surface of the support base;

a control cabinet mounted on an upper surface of the support base such that the control cabinet is located on the right rear side of the cab;

a base plate mounted on an upper surface of the support base, the upper surface being located to the right of the control cabinet; and

a plurality of resistor boxes mounted on an upper surface of the base plate;

wherein the plurality of resistor boxes are arranged on the upper surface of the base plate in a stacked manner such that the plurality of resistor boxes are located to the right of the control cabinet whereby a front vertical surface of the control cabinet and a front-facing side surface of the front stack of the resistor boxes are in the same plane along a width direction of the body frame in order to secure right side visibility from the cab, and

wherein the plurality of resistor boxes each comprise:

a substantially hexahedron-shaped casing having an inlet port at one end thereof and an outlet port at the other end thereof;

resistors electrically connected in parallel, the resistors being housed in the casing; and

a fan for cooling the resistors, the fan being housed in the casing.

2. The electrically-driven dump truck defined in claim 1 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the direction of an air flow produced by the fans is parallel to an anterior-posterior direction of the body frame.

3. The electrically-driven dump truck defined in claim 2 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the outlet ports of the plurality of resistor boxes face an anterior direction of the body frame.

4. The electrically-driven dump truck defined in claim 2 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the fans of the plurality of resistor boxes face a posterior direction of the body frame.

5. The electrically-driven dump truck defined in claim 1 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the direction of an air flow produced by the fans is parallel to a width direction of the body frame.

6. The electrically-driven dump truck defined in claim 5 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the outlet ports of the plurality of resistor boxes face outward with respect to a width direction of the body frame.

7. The electrically-driven dump truck defined in claim 5 , wherein the plurality of resistor boxes are arranged on the support base in a stacked manner such that the fans of the plurality of resistor boxes face the right side of the control cabinet.

8. The electrically-driven dump truck defined in any one of claims 1 to 7 , wherein the plurality of resistor boxes are joined together by connectors that connect the casings of the plurality of resistor boxes.

9. The electrically-driven dump truck defined in claim 1 , wherein the plurality of resistor boxes are arranged in a stacked manner, joined together by connectors that connect the casings of the plurality of resistor boxes prior to being mounted on the support base.

10. The electrically-driven dump truck defined in claim 1 ,

wherein the support base comprises:

a beam-like support base mounted on an upper front section of the body frame such that a longitudinal direction of the beam-like support base is parallel to a width direction of the body frame; and

a base plate attached to the upper right side of the beam-like support base and

wherein the plurality of resistor boxes are arranged on an upper surface of the base plate in a stacked manner such that the plurality of resistor boxes are located to the right of the control cabinet.

11. The electrically-driven dump truck defined in claim 10 , wherein the plurality of resistor boxes are arranged in a stacked manner, joined together by connectors that connect the casings of the plurality of resistor boxes prior to being mounted on the base plate.