Shock absorbing bumper for gantry cranes
AssigneeMi-Jack Products, Inc.
InventorDaniel Brian Zakula SR.
Life of this patent
Estimating the term…
Abstract
In a gantry crane having a vertically movable, horizontal stabilizer beam spaced between upright columns, a shock absorbent bumper assembly is mounted to ends of the stabilizer beam to prevent direct contact against the columns. The bumper assembly includes an elastically deformable bumper body made of resilient material and a wear pad made of wear resistant material, the wear pad being secured to the bumper body so that the wear pad faces the column. The wear pad resists wear due to sliding contact against the column and the resilient bumper body absorbs energy from impacts as the stabilizer beam shifts in a transverse direction.
Claims20
A bumper assembly for use in a gantry crane including a vertically movable stabilizer beam having opposite ends, the stabilizer beam positioned between a pair of upright columns so that each of the ends is spaced from one of the columns by a respective gap, the bumper assembly comprising:
- a bumper body made of an elastically deformable material, the body being mountable to one of the ends of the stabilizer beam;
- and
- a wear pad made of a wear resistant material, the wear pad defining a contact surface, the wear pad being securable to the bumper body such that the contact surface faces a nearby one of the columns to prevent contact in a lateral direction between the stabilizer beam and the column.
A wear pad for use in combination with an elastomeric bumper body of a type that is mountable to an end of a vertically movable stabilizer beam spaced from an upright column, the wear pad comprising:
- a contact portion configured to be securable to the bumper body so that the contact portion is positioned between the bumper body and the column;
- wherein the wear pad is made of a wear resistant material
A gantry crane for lifting and moving a load comprising:
- a pair of upright columns;
- a vertically movable, generally horizontal stabilizer beam, having a pair of oppositely directed ends, the stabilizer beam positioned between the columns so that each of the ends is laterally spaced from a nearby column by a respective gap;
- and
- a bumper assembly including a bumper body made of elastically deformable material and a wear pad made of wear resistant material securable to the bumper body, the bumper assembly positioned in the gap between the end of the stabilizer beam and a nearby one of the columns to prevent contact in the lateral direction between the stabilizer beam and the column.
Dependencies are inferred from the claim text.