Apparatus and method for assembling/disassembling a mobile crane boom

Patent metadata

Field	Value
Publication number	US-12091291-B2
Application number	US-202217592685-A
Country	US
Kind code	B2
Filing date	Feb 4, 2022
Priority date	Feb 9, 2021
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

The invention relates to an apparatus for assembling and disassembling a mobile crane boom, in particular a telescopic boom, that comprises a support device that is attached or attachable to the mobile crane and/or to a transport vehicle on which the boom can be placed and fixed or locked, a roller cart on which the boom can be placed and that is movably stored or storable on the transport vehicle, and a guide mechanism that is attached or attachable to the transport vehicle and by means of which the roller cart is actively movable in parallel with the longitudinal axis of the boom. The invention further relates to a mobile crane having an apparatus in accordance with the invention and to a method of assembling a boom stored on a transport vehicle to a mobile crane using the apparatus in accordance with the invention.

First claim

The invention claimed is:

1. An apparatus for assembling/disassembling a mobile crane boom ( 10 ) comprising
a support device attachable to a mobile crane ( 1 ) and/or a transport vehicle ( 2 ) and on which the boom ( 10 ) can be placed and fixed;
a roller cart ( 16 ) on which the boom ( 10 ) can be placed and movably stored on the transport vehicle ( 2 ); and
a guide mechanism attachable to the transport vehicle ( 2 ) and by which the roller cart ( 16 ) is actively movable in parallel with the longitudinal axis of the boom ( 10 ) and the boom is thereby displaceable, wherein
the guide mechanism comprises a drive unit ( 18 ) movable along a guide device for moving the boom ( 10 ) along the longitudinal axis of the boom ( 10 ), with the drive unit ( 18 ) being arranged on the roller cart ( 16 ).

2. An apparatus in accordance with claim 1 , wherein the support device comprises a roller block ( 12 ) attachable to the mobile crane ( 1 ) or transport vehicle ( 2 ) and having a roller bearing assembly ( 13 ) for mounting and guiding the boom ( 10 ), the roller bearing assembly ( 13 ) being vertically adjustable in the vertical direction.

3. An apparatus in accordance with claim 1 , wherein the support device comprises a support block ( 14 ) attachable to the transport vehicle ( 2 ) and moved from a fixing position in which the boom ( 10 ) can be placed on and/or fixed to the support block ( 14 ), into a release position in which the support block ( 14 ) does not block a horizontal movement of the boom ( 10 ) and vice versa.

4. An apparatus in accordance with claim 1 , wherein the guide device comprises pulling means ( 20 ) attachable along a load surface ( 3 ) of the transport vehicle ( 2 ) and guided via one or more rollers ( 22 , 24 ) of the drive unit ( 18 ), with at least one of the rollers ( 22 , 24 ) being actively drivable.

5. An apparatus in accordance with claim 4 , wherein the pulling means ( 20 ) is releasably mountable on the load surface ( 3 ) of the transport vehicle ( 2 ), via fastening means ( 4 ) arranged at a front end and a rear end of the load surface ( 3 ).

6. An apparatus in accordance with claim 4 , wherein the pulling means ( 20 ) comprise a hoisting gear chain, guided via one or more sprocket wheels ( 22 , 24 ) of the drive unit ( 18 ), with the chain ( 20 ) comprising tensioning means by which the chain ( 20 ) can be tensioned.

7. An apparatus in accordance with claim 1 , wherein the drive unit ( 18 ) is hydraulically drivable, with a hydraulic line being provided that can be laid from the drive unit ( 18 ) to a hydraulic connector of the mobile crane ( 1 ) and comprises a hydraulic hose ( 30 ) stored on a hose drum ( 32 ) in a windable and unwindable manner.

8. An apparatus in accordance with claim 1 , wherein the guide mechanism is drivable via a hydraulic system of the mobile crane ( 1 ).

9. A mobile crane ( 1 ) comprising an apparatus in accordance with claim 1 .

10. A method of assembling said boom ( 10 ) stored on said transport vehicle ( 2 ) on said mobile crane ( 1 ) using the apparatus in accordance with claim 1 , comprising the steps of:
positioning the transport vehicle ( 2 ) relative to the mobile crane ( 1 );
releasing the fixing of the boom ( 10 ) at the transport vehicle ( 2 ) at the support device;
displacing the boom ( 10 ) along its longitudinal axis in the direction of the mobile crane ( 1 ) by an active movement of the roller cart ( 16 ), with the boom ( 10 ) being roller supported on the support device and the roller cart ( 16 );
connecting the boom ( 10 ) to the mobile crane ( 1 ); and
luffing up the boom ( 10 ) so that it rises from the support device and the roller cart ( 16 ).

11. A method in accordance with claim 10 , wherein the support device comprises a support block ( 14 ) attached to the transport vehicle ( 2 ), with the support block ( 14 ) being moved prior to the displacement of the boom ( 10 ) from a fixing position into a release position in which the support block ( 14 ) does not block a displacement of the boom ( 10 ).

12. A method in accordance with claim 11 , wherein the support device comprises a roller block ( 12 ) attached to the mobile crane ( 1 ), vertically adjustable, and having a roller bearing assembly ( 13 ) for mounting and receiving the boom ( 10 ), with the roller block ( 12 ) being extended upwardly after the release of the fixing of the boom ( 10 ) so that the boom ( 10 ) rises from the support block ( 14 ), with the boom ( 10 ) at the mobile crane ( 1 ) being movable by adjustment of the roller block ( 12 ) after the displacement into an assembly position in which a connection can be established between the boom ( 10 ) and the mobile crane ( 1 ).

13. A method in accordance with claim 10 , wherein the guide mechanism comprises a drive unit ( 18 ) arranged at the roller cart ( 16 ) and connected to a chain ( 20 ), attached along a load surface ( 3 ) of the transport vehicle ( 2 ), with the roller cart ( 16 ) being moved together with the boom ( 10 ) in the direction of the mobile crane ( 1 ) by driving the drive unit ( 18 ).

14. A method in accordance with claim 13 , wherein the drive unit ( 18 ) is hydraulically driven by a hydraulic system of the mobile crane ( 1 ), with a hydraulic connection being established between the drive unit ( 18 ) and the hydraulic system of the mobile crane ( 1 ), via a hydraulic hose ( 30 ) stored in a windable and unwindable manner on a hose drum ( 32 ) after the positioning of the transport vehicle ( 2 ) relative to the mobile crane ( 1 ).

Assignees

• Liebherr Werk Ehingen

Inventors

• Boos Bernd

Classifications

• B60P1/00

  Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading (vehicles for carrying harvested crops with means for self-loading or self-unloading A01D90/00; peculiar to refuse collecting-vehicles B65F; loading or unloading vehicles by means not incorporated therein B65G) · CPC title

• B66C23/365 Primary

  dismantable into smaller units for transport purposes · CPC title