Manitowoc Crane Companies, Inc.

William J O'Neil

Alan E Pleuss

Dirk Albert Stamhuis

Brandon D Resch

Lambert Drent

David J Pech

Robert J Walker

Joel David Zick

Joseph R Rucinski

Timothy James Albinger

Derrick L Geiser

Brian Nicholas Nysse

John William Taylor

Jonathan Michael Borlee

Trevor D Mentink

Ingo Noeske

David A Robertson

James M Gauthier

Robert J Philbert

Gary N Chaloupka

A lift crane includes a carbody and movable ground engaging members mounted on the carbody. A rotating bed is rotatably connected to the carbody and includes a counterweight support frame including a rack coupled directly to a lower surface of the rotating bed. A boom is pivotally mounted to the rotating bed. A counterweight unit movement device is configured to move the counterweight unit toward and away from the boom. At least one auxiliary member includes a counterweight pad that is configured to not touch the ground during a pick, move, and set operation. A linear actuator is configured to adjust a distance that the counterweight pad is above the ground.

Height adjustment mechanism for an auxiliary member on a crane

A cab support assembly supports and moves an operator's cab relative to a frame of a construction machine. The cab support assembly includes a cab support coupled to the frame of the construction machine. The operator's cab is mounted to a cab support mounting frame, which in turn is pivotably coupled to the cab support. An actuation device is coupled to the cab support and to the cab support mounting frame. The actuation device includes a first actuation device position in which the cab support frame is in a first position in which the cab support mounting frame defines a first plane, and at least a second actuation device position in which the cab support mounting frame is in a second position such that the cab support mounting frame defines a second plane that intersects the first plane at a negative angle.

Tilting cab mechanism for a crane

A method of connecting sections of a crane suspension assembly together includes attaching a frame to a member of a first section; connecting a tension member between the frame and a connector used in the assembly; moving the tension member so that the connector pivots about a pin to a position where a second hole in the connector is in alignment with a hole in a second section member; putting a second pin through the hole in the connector and the hole through the second section member; and disconnecting the tension member from the connector. The method may also include attaching a frame with a winch to a section of the crane suspension assembly; connecting a line from the winch to the connector; activating the winch to move the connector so that it pivots about a pivot axis; and securing the connector in its second position.

Method of connecting crane suspension assembly sections together and frame mounted assembly used therefore

A counterweight block apparatus includes a pair of interconnecting counterweight blocks having top and bottom surfaces, the counterweight blocks forming a plane of interconnection along adjacent sides thereof; and a shear bar releasably secured between the adjacent sides of the interconnecting counterweight blocks, generally perpendicular to the plane of interconnection, to provide resistance to relative vertical movement of the interconnecting counterweight blocks along the plane of interconnection. In another aspect, each counterweight block includes in at least one side thereof an indentation from a top of the counterweight block to a depth more shallow than the thickness of the counterweight block, the indentation defining a lip for hand grabbing. An aperture may be formed through the rest of the thickness of the counterweigh block at each indentation, wherein a securing strap can be run through each aperture of a stacked plurality of counterweight blocks to secure them to each other.

Counterweight block and assemblies for cranes

A method of assembling a hook block for a crane includes: providing a sheave housing containing a plurality of sheaves with a pivotal connection link secured to the top of the sheave housing, the sheave housing including extended portions each with a hole therethrough and a housing frame positioned below the plurality of sheaves, the housing frame having a locking surface; placing a cross beam on its side, the cross beam having stabilizing feet resting on the ground; positioning the extended portions of the sheave housing within a plurality of brackets of the cross beam, each bracket with a hole therethrough; aligning the holes of the extended portions of the sheave housing with the holes of the brackets; inserting a shaft through the aligned holes; securing a cap to an end of the shaft to resist lateral movement relative to the holes; and inserting a locking bar between the locking surface of the housing frame and a surface of a bracket of the cross beam, to resist relative movement between the sheave housing and the cross beam during further assembly.

Crane hook block

A hook block for a crane includes a sheave housing containing sheaves, extended portions with a hole through each, and a housing frame with a locking surface; a cross beam has multiple brackets each with a hole; a bracket has a plurality of surfaces corresponding to a plurality of angles of relative position between the sheave housing and the first cross beam, wherein the plurality of surfaces correspond to the locking surface and form a gap therebetween at each of the plurality of angles; a shaft rotatably captured within the holes of the extended portions of the housing and of the multiple brackets; and a locking bar sized to be placed in the gap between the locking surface and any of the plurality of surfaces to immobilize movement of the sheave housing relative to the cross beam.

Growing community of inventors

Green Bay, WI, United States of America

William J O'Neil