TRAVELING DRIVE DEVICE FOR DUMP TRUCK

摘要

A traveling drive device for a dump truck is provided with an axle housing mounted to a vehicle body, a wheel mounting tube rotatably provided on the outer periphery side of the axle housing, a disk holding cylinder provided on the axial outside of the wheel mounting tube, a brake disk mounted to the disk holding cylinder, and a brake device for applying braking to the brake disk. The disk holding cylinder is configured by a cylindrical body to be mounted to the wheel mounting tube and a plurality of disk mounting legs provided on the cylindrical body. A plurality of U-shaped projections are provided on the outer periphery side of the brake disk at positions corresponding to the respective disk mounting legs. A recessed groove which fits on the disk mounting leg so as to hold a distal end thereof is provided in each of the U-shaped projections.

主权项

1. A traveling drive device for dump truck comprising:
a tubular axle housing (12) which is mounted to a vehicle body (2) of a dump truck (1) in a non-rotational state and in which a drive source (17) is provided; a rotational shaft (17A) which is provided so as to axially extend in said axle housing (12) and is rotationally driven by said drive source (17); a wheel mounting tube (18) which is rotatably provided on the axial outside of said axle housing (12) and on the outer periphery side thereof via wheel support bearings (20, 21) and to which a wheel (7) is mounted; a reduction mechanism (22) which is provided between said wheel mounting tube (18) and said axle housing (12) to decelerate rotation of said rotational shaft (17A) for transmission to said wheel mounting tube (18); a tubular disk holding cylinder (49, 61) which is provided to be located on the axial outside of said wheel mounting tube (18); an annular brake disk (56) which is mounted to said disk holding cylinder (49, 61) to rotate together with said wheel mounting tube (18); and a brake device (44) which applies braking to said wheel mounting tube (18) by pressing a friction pad (48) against said brake disk (56), characterized in that: said disk holding cylinder (49, 61) is configured by a cylindrical body (50, 62) which is mounted to said wheel mounting tube (18) and a plurality of disk mounting legs (51, 52, 53, 54, 63, 64, 65, 66) which are provided on said cylindrical body (50, 62) at intervals in a circumferential direction thereof and axially project outward from said cylindrical body (50, 62), U-shaped projections (58) which are respectively disposed at positions corresponding to said respective disk mounting legs (51 to 54, 63 to 66) are provided on the outer periphery side of said brake disk (56), and said U-shaped projections (58) each are configured to have a recessed groove (58B) to be fitted on each of said disk mounting legs (51 to 54, 63 to 66) so as to hold a distal end of each of said disk mounting legs (51 to 54, 63 to 66) therein in the circumferential direction.