Mobile crane having adjustable ballast mounting apparatus

Patent metadata

Field	Value
Publication number	US-10450170-B2
Application number	US-201715651921-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Jul 19, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

The present disclosure relates to a mobile crane having an undercarriage and a superstructure rotatable about an axis of rotation with respect to the undercarriage and having a ballast mounting apparatus couplable to the superstructure. The present disclosure is furthermore directed to a corresponding ballast mounting apparatus.

First claim

The invention claimed is:

1. A mobile crane comprising:
an undercarriage;
a superstructure, wherein the superstructure is rotatable about an axis of rotation with respect to the undercarriage;
a ballast mounting apparatus that is couplable to the superstructure;
wherein at least one connection element is provided at the superstructure and at least two mating connection elements are provided at the ballast mounting apparatus;
wherein the ballast mounting apparatus is couplable to the superstructure by the at least two mating connection elements in positions of different distance from the axis of rotation of the superstructure;
wherein the ballast mounting apparatus comprises a ballast frame that is curved in a horizontal plane of the ballast frame and/or is U-shaped; and
wherein the ballast mounting apparatus is couplable to the superstructure in two positions mutually rotated about a vertical axis.

2. The mobile crane in accordance with claim 1 , wherein the at least two mating connection elements are not simultaneously couplable to the at least one connection element.

3. The mobile crane in accordance with claim 1 , wherein the ballast mounting apparatus is couplable to the superstructure in two positions mutually rotated about the vertical axis by 180°.

4. The mobile crane in accordance with claim 1 , wherein the at least two mating connection elements are provided at mutually oppositely disposed sides of the ballast mounting apparatus.

5. The mobile crane in accordance with claim 1 , wherein the at least two mating connection elements extend by different distances from the center of mass of the ballast mounting apparatus.

6. The mobile crane in accordance with claim 1 , wherein at least one winch connection element is provided at the ballast mounting apparatus for coupling a winch to the ballast mounting apparatus, with the winch connection element configured as a part of the mating connection elements.

7. The mobile crane in accordance with claim 1 , wherein at least one ballasting cylinder is provided at the ballast mounting apparatus for moving the ballast mounting apparatus relative to the superstructure and/or to a base plate.

Assignees

• Liebherr Werk Ehingen

Inventors

• Koenig Heinz
• Oelberger Franz
• Willim Hans-Dieter
• Eberhardt Lars
• Keppler Jan

Classifications

• B66C23/84

  Slewing gear (anti-friction bearings F16C) · CPC title

• B66C23/36

  mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes (with pneumatic or hydraulic motors B66C23/54; vehicle or ship aspects B60 - B63) · CPC title

• B66C23/76 Primary

  and movable to take account of variations of load or of variations of length of jib · CPC title