Supporting structure for an operator cabin on construction equip

Details Supporting structure for an operator cabin on construction equip Supporting structure for an operator cabin on construction equip

1994-02-17

1996-05-28

Tyson, Karin L.

Motor vehicles

Bodies

Tractor and similar vehicle cabs

180 8915, B62D 3310

Patent

active

055202594

ABSTRACT:
An operator cabin on construction equipment is provided with a supporting structure which improves the riding quality by absorbing and damping vibrations and large impacts transmitted to the operator cabin. The right and left side portions of a front portion of the operator cabin (1) are secured to a frame (3) of the body of the construction equipment through damper plate shock absorbers (10R, 10L) or rotatable mounts (30R, 30L), while the right and left side portions of a rear portion of the operator cabin (1) are secured to the frame (3) through spring biased hydraulic shock absorbers (20L, 20R). Each of the shock absorbers has a vibration damping function. In particular, the stroke of the spring biased hydraulic shock absorber is large enough to absorb a large impact energy. This makes it possible to absorb vibration of small amplitude. For a strong shock, the impact energy can be absorbed by oscillating the operator cabin (1) about a pivot axis through the front mounts, allowing damping of the vibration. Lateral oscillation can be minimized by a four-bar parallel linkage which includes upper and lower lateral bars (40a, 40b), one cabin side (1R), and a vertical bracket (4R) positioned adjacent to that cabin side (1R).

REFERENCES:
patent: 1303950 (1919-05-01), O'Connor
patent: 3147966 (1964-09-01), Axthammer et al.
patent: 4921049 (1990-05-01), Kaiser
patent: 4989684 (1991-02-01), Conaway
patent: 4998592 (1991-03-01), Londt
patent: 5209460 (1993-05-01), Bouhours et al.

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