Crane and cable drum unit for same

Patent metadata

Field	Value
Publication number	US-11970371-B2
Application number	US-202117447139-A
Country	US
Kind code	B2
Filing date	Sep 8, 2021
Priority date	Mar 8, 2019
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

A crane (2), more particularly a mobile fast-erecting crane, having at least one supply connection to which a supply line (16), more particularly a power cable, can be connected, wherein the supply line can be wound on a cable drum (15), which can be mounted on a drum mount (10) on the crane, with the cable drum being mounted to rotate on a drum support frame (18), which has running gear (18) for moving the cable drum over the ground and which has releasable mounting means, shaped to match the drum mount of the crane, for separably mounting the drum support frame on the drum mount of the crane. The invention further relates to a cable drum unit for winding a supply line (16) of a crane (2).

First claim

We claim:

1. A crane having at least one supply connection to which a supply line is connectable, wherein the supply line is windable onto a cable drum that is fastenable to a drum mount of the crane, wherein the cable drum is rotatably supported at a drum bearing frame that has a chassis for moving the cable drum on the ground, and wherein the drum bearing frame is releasably attachable to the drum mount with a shape-matched connection,
wherein the drum mount has a reception compartment that has a compartment opening through which the cable drum is pushable into the reception compartment together with the drum bearing frame and the chassis,
wherein a cable drum unit is receivable by the reception compartment when the cable drum unit is in a horizontal stowing orientation that is tilted by approximately 90° with respect to a travel orientation standing on the ground, wherein the cable drum unit comprises the supply line, the cable drum, and the drum bearing frame, and wherein the reception compartment has a height that is smaller than a longitudinal extent of the reception compartment or less than 75° of the longitudinal extent of the reception compartment.

2. The crane of claim 1 , wherein the drum bearing frame is insertable into the drum mount with an exact fit.

3. The crane of claim 2 , wherein the chassis and the drum bearing frame are spreadable or tensionable by a weight force of the cable drum at the drum mount.

4. The crane of claim 1 , wherein the drum bearing frame has a support section comprising two support arms that are spaced apart from one another, the support section forming a ground contact surface or mutually spaced apart ground contact points together with the chassis and extending on a side of the cable drum together with the chassis, the support section and an axis of rotation of the cable drum forming a triangle when viewing the cable drum in the direction of the axis of rotation, and wherein the axis of rotation extends above the chassis and the support section in a state supported on the ground between the chassis and the support section.

5. The crane of claim 1 , wherein the drum bearing frame has a handlebar that extends on an oppositely disposed side of the cable drum relative to the chassis.

6. The crane of claim 5 , wherein the handlebar and the chassis are offset toward the same side of the cable drum relative to an axis of rotation of the cable drum such that a connection line between the handlebar and the chassis forms a tangent at the cable drum.

7. The crane of claim 5 , wherein the drum bearing frame has a central bearing section at which the cable drum is rotatably supported and at which the chassis, support arms, and the handlebar are rigidly supported.

8. The crane of claim 1 , wherein the cable drum is rotatable with respect to the drum bearing frame via a drum drive.

9. The crane of claim 8 , wherein the drum drive has a crank handle.

10. The crane of claim 1 , wherein the supply line has a respective plug-in coupling at its two ends for coupling to the at least one supply connection of the crane, on the one hand, and for coupling to a mains supply connection, on the other hand.

11. The crane of claim 1 , wherein an undercarriage comprising a crane chassis bears a slewing platform that is rotatable about an upright axis and at which a tower and/or a boom is arranged, and wherein a hoist rope runs off the boom.

12. The crane of claim 11 , wherein the drum mount is provided at the undercarriage.

13. The crane of claim 1 , wherein the crane comprises a mobile fast-erecting crane.

14. The crane of claim 1 , wherein the supply line comprises a power cable.

15. The crane of claim 1 , wherein the reception compartment is parallelepiped-shaped, with the compartment opening extending flush up to a compartment bottom and forming an upright side opening of the reception compartment.

16. A crane comprising:
a reception compartment; and
at least one supply connection to which a supply line is connectable,
wherein the supply line is windable onto a cable drum that is fastenable to a drum mount of the crane, wherein the cable drum is rotatably supported at a drum bearing frame that has a chassis for moving the cable drum on the ground, and wherein the drum bearing frame is releasably attachable to the drum mount with a shape-matched connection,
wherein the drum bearing frame has a support section comprising two support arms that are spaced apart from one another, the support section forming a ground contact surface or mutually spaced apart ground contact points together with the chassis and extending on a side of the cable drum together with the chassis, the support section and an axis of rotation of the cable drum forming a triangle when viewing the cable drum in the direction of the axis of rotation, and wherein the axis of rotation extends above the chassis and the support section in a state supported on the ground between the chassis and the support section,
wherein the reception compartment has a height, and wherein the support section and a wheel or wheels of the chassis define a spread that is larger than the height of the reception compartment and that fits with an exact fit between a compartment bottom and a top of the reception compartment in a position of the spread tilted at an acute angle with respect to the vertical.

17. The crane of claim 16 , wherein the reception compartment has a compartment opening through which the cable drum is pushable into the reception compartment together with the drum bearing frame and the chassis.

18. The crane of claim 17 , wherein the reception compartment is parallelepiped-shaped, with the compartment opening extending flush up to a compartment bottom and forming an upright side opening of the reception compartment.

19. The crane of claim 17 , wherein a cable drum unit is receivable by the reception compartment when the cable drum unit is in a horizontal stowing orientation that is tilted by approximately 90° with respect to a travel orientation standing on the ground, wherein the cable drum unit comprises the supply line, the cable drum, and the drum bearing frame, and wherein the height of the reception compartment is smaller than a longitudinal extent of the reception compartment or less than 75° of the longitudinal extent of the reception compartment.

Assignees

• Liebherr Werk Biberach Gmbh

Inventors

• Assfalg Martin
• Altmann Michael
• Eggert Michael

Classifications

• B66C13/12 Primary

  Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices · CPC title

• B65H75/403

  Carriage with wheels · CPC title

• B65H75/4497

  driving by the wheels of the carriage or vehicle · 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

• B66C23/365

  dismantable into smaller units for transport purposes · CPC title