Swinging arm loading refuse collection vehicle arm restraint

Details Swinging arm loading refuse collection vehicle arm restraint Swinging arm loading refuse collection vehicle arm restraint

1998-02-06

1999-12-21

Krizek, Janice L.

Material or article handling

Device for emptying portable receptacle

For emptying contents thereof into portable receiving means

92 15, 92 24, 414555, B65F 3002

Patent

active

060040920

ABSTRACT:
A side loading refuse collection vehicle has a lift arm extendible and rotatable relative to the vehicle, the lift arm carrying grabber apparatus at an end for grasping a refuse container which may be lifted and dumped into the top of the body of the vehicle. The lift arm which is guided to move in a path so as to grasp the container, raise it, dump it and return it to its initial position, is driven toward and away from the vehicle by a first hydraulic drive cylinder and lifted and lowered by a second hydraulic drive cylinder. The first hydraulic drive cylinder has a drive rod on which a locking bolt is secured and may be captured in a receptacle of a keeper when the rod is in the fully retracted position to lock the arm against inadvertent and undesirable extension outwardly away from the vehicle. The keeper is pivotally mounted and moved by the output rod of a pneumatic cylinder to permit the bolt to be released from the receptacle when the hydraulic drive is activated. When the hydraulic drive rod is retracted to its fully retracted position, the keeper returns to the locking position to receive the locking bolt. This ensures that the arm does not inadvertently drift outwardly into traffic while the vehicle is driven should there be a failure of the hydraulic cylinder system.

REFERENCES:
patent: 2813518 (1957-11-01), Driskel et al.
patent: 3576151 (1971-04-01), Sendoykas
patent: 4073345 (1978-02-01), Miller
patent: 4352626 (1982-10-01), Frisbee et al.
patent: 4365539 (1982-12-01), Martin
patent: 4566840 (1986-01-01), Smith
patent: 5755547 (1998-05-01), Flerchinger et al.

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