Apparatus for assembling or dismantling a crane

Patent metadata

Field	Value
Publication number	US-9327944-B2
Application number	US-201214361595-A
Country	US
Kind code	B2
Filing date	Nov 22, 2012
Priority date	Nov 30, 2011
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

An apparatus ( 1 ) for assembling or dismantling a crane has a coupling unit ( 11 ) for coupling with a tower part ( 3 ). The coupling unit ( 11 ) can be moved into a latching position or into an unlatching position. The coupling unit ( 11 ) furthermore has counterweights ( 110 ) for setting a center of gravity of the crane.

First claim

The invention claimed is:

1. An apparatus ( 1 ) for installing or dismantling a crane, and having a coupling unit ( 11 ) configured for coupling the apparatus ( 1 ) with a carrier ( 2 ) of a tower part ( 3 ) of the crane, wherein
the coupling unit ( 11 ) is configured to be movable into a latching position for avoiding a release of the coupling between the coupling unit ( 11 ) and the carrier of the tower part ( 3 ) or into an unlatching position for coupling or decoupling the coupling unit ( 11 ) with the carrier of the tower part ( 3 ) of the crane,
the coupling unit has a rotatable hook ( 112 ) which is coupled with a clamping unit, with the clamping unit holding the hook ( 112 ) in the latching position,
the coupling unit ( 11 ) comprises,
a counterweight ( 110 ),
the hook ( 112 ) being pivotally mounted underneath the counterweight ( 110 ),
a fastening section ( 111 ) pivotally coupling the hook ( 112 ) with the counterweight ( 110 ),
a guide section ( 114 ) fixedly connected to the fastening section ( 111 ) and having a reception groove ( 113 ) at an end of a run-in slope thereof,
the clamping unit having a spring device ( 117 ) interconnecting the coupling unit ( 11 ) and hook ( 112 ) to maintain the hook ( 112 ) in latching position,
transmission means ( 116 ) rotatably mounted upon the fastening section ( 111 ) and coupled to the spring device ( 117 ) at a pivotal connection point ( 115 ) and having a first limb ( 116 ′), and
the hook ( 112 ) having first coupling means ( 118 ) to which the first limb ( 116 ′) of the transmission means ( 116 ) is coupled.

2. An apparatus in accordance with claim 1 , wherein the transmission means ( 116 ) has a connection means ( 119 ) which are couplable to an actuation bar ( 4 ) to bring the coupling unit ( 11 ) into the unlatching position.

3. An apparatus in accordance with claim 1 , wherein the counterweight ( 110 ) is movable into a balance position.

4. An apparatus ( 1 ) in accordance with claim 1 , wherein the coupling unit ( 11 ) is configured to automatically latch the carrier ( 2 ) with the coupling unit ( 11 ), and avoid release of the coupling between the coupling unit ( 11 ) and the carrier ( 2 ) of the tower part ( 3 ), and be movable from the latching position into an unlatching position, and allowing the carrier ( 2 ) of the tower ( 3 ) to be decoupled from the coupling unit ( 11 ).

5. An apparatus ( 1 ) in accordance with claim 4 , wherein the coupling unit ( 11 ) is configured to receive and latch cross-pins ( 21 ) of the carrier ( 2 ).

6. An apparatus ( 1 ) in accordance with claim 5 , wherein the carrier ( 2 ) comprises
a longitudinal frame ( 24 ) having first projections ( 26 ) extending from opposite ends thereof and each defining a reception space ( 23 ) for part of the tower ( 3 ),
each said reception space ( 23 ) being bounded by a pin ( 22 ), and
a second projection ( 20 ) extending from the longitudinal frame ( 24 ) in an opposite direction from the first projections ( 26 ), and with a latch cross-pin ( 21 ) provided on an end of the second projection ( 20 ) remote from the longitudinal frame ( 24 ).

7. An apparatus ( 1 ) in accordance with claim 1 , wherein the transmission means ( 116 ) comprises a second limb ( 116 ″) and connection means ( 119 ) arranged at the end of the second limb ( 116 ″).

8. An apparatus ( 1 ) in accordance with claim 1 , wherein the counterweight ( 110 ) is positioned on top of the coupling unit ( 11 ).

Assignees

• Liebherr Werk Biberach Gmbh

Inventors

• Strahle Alexander
• Herse Thomas

Classifications

• B66C1/36 Primary

  with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads · CPC title

• B66C23/286

  with locking devices · CPC title

• E04H12/342

  Arrangements for stacking tower sections on top of each other (E04H12/344 takes precedence) · CPC title

• B66C13/08

  for depositing loads in desired attitudes or positions · CPC title

• B66C23/26

  for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail (with supporting couples provided by walls or buildings B66C23/20; mounted on vehicles B66C23/36; jib constructions B66C23/64) · CPC title