Stress relief for walking dragline frames

Details Stress relief for walking dragline frames Stress relief for walking dragline frames

1990-10-29

1991-08-20

Taylor, Dennis L.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

37115, E02F 346

Patent

active

050403141

ABSTRACT:
A new and improved walking dragline excavator frame has an annular rail pad and a rail girder web for structurally backing up the rail pad, with a generally annularly arranged oblique reinforcing plate structure attached to and between the rail pad and the rail girder web for controlled transfer and distribution to the rail girder web of cyclically varying roller loads imposed on the rail pad. The arrangement provides facility for economical repair in the field of single web rail girder frames in which there has been failure of the welded joint between the rail girder and the rail pad.

REFERENCES:
patent: 3608865 (1971-09-01), Kirk
patent: 4035936 (1977-07-01), Avara
patent: 4329795 (1982-05-01), Kalve
patent: 4611440 (1986-09-01), Kalve
patent: 4718729 (1988-01-01), Gilmore et al.
patent: 4769932 (1988-09-01), Kalve
patent: 4864747 (1989-09-01), Martin et al.

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