Self-propelled trolley

Patent metadata

Field	Value
Publication number	US-9708166-B2
Application number	US-201214125609-A
Country	US
Kind code	B2
Filing date	Jun 12, 2012
Priority date	Jun 15, 2011
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

The invention describes a self-propelled trolley for handling a wind-turbine blade, which trolley comprises a driving device for propelling the trolley between locations; and a lifting device, which lifting device is realised to raise and lower the wind-turbine blade. The invention also describes a method of handling a wind-turbine blade, which method comprises the steps of positioning a self-propelled trolley according to any of the preceding claims at a point underneath the wind-turbine blade; actuating a lifting device of the self-propelled trolley to raise or lower the wind-turbine blade; and controlling a driving device of the self-propelled trolley to propel the trolley between locations.

First claim

The invention claimed is:

1. A self-propelled trolley for handling a wind-turbine blade of a wind-turbine, the trolley comprises:
a driving device for propelling the trolley between locations;
a lifting device, the lifting device configured to raise and lower the wind-turbine blade, wherein a maximum height of the trolley is less than or equal to the height of a wheel of the trolley when the lifting device is in a non-lifted position; and
a holding device, wherein the holding device is arranged for holding the wind-turbine blade at a point along its length, wherein the holding device and lifting device are connected by a universal joint to allow the blade free movement, between the lifting device and the holding device, during transport of the wind-turbine blade.

2. The self-propelled trolley according to claim 1 , comprising a remote control interface, the remote-control interface configured to control the driving device.

3. The self-propelled trolley according to claim 1 , wherein the driving device comprises a motor and a drive train for transferring power to two or more wheels of the trolley.

4. The self-propelled trolley according to claim 1 , wherein the lifting device is configured to support a load, such that a point at which the load is supported by the lifting device is arranged over the trolley for any position of the lifting device.

5. The self-propelled trolley according to claim 1 , wherein the lifting device comprises a hydraulic lifting arrangement.

6. The self-propelled trolley according to claim 1 , wherein the lifting device is rotatable relative to the driving device.

7. The self-propelled trolley according to claim 1 , wherein the holding device comprises a cradle the cradle being shaped to accommodate a curved surface of the wind-turbine blade.

8. The self-propelled trolley according to claim 1 , wherein the holding device is configured to accommodate a securing element for securing the wind-turbine blade to the holding device.

9. The self-propelled trolley according to claim 1 , wherein a maximum height (H max ) of the trolley comprises at most 1.5 m when the lifting device is in a non-extended position.

10. The self-propelled trolley according to claim 1 , comprising a communications interface for communicating with a communications interface of a further transport device.

11. The self-propelled trolley according to claim 1 , comprising at least one sensor for sensing a relative position of the trolley.

12. The self-propelled trolley according to claim 1 , wherein a maximum height (H max ) of the trolley comprises at most 1.25 m when the lifting device is in a non-extended position.

13. A method of handling a wind-turbine blade, the method comprises the steps of:
positioning a self-propelled trolley at a point underneath the wind-turbine blade;
providing a holding device for the wind-turbine blade;
actuating a lifting device of the self-propelled trolley to raise or lower the wind-turbine blade on the holding device;
providing a universal joint between the lifting device and the holding device;
transporting the wind-turbine blade while allowing the holding device to freely rotate with respect to the lifting device; and
controlling a driving device of the self-propelled trolley to propel the trolley between locations.

14. The method according to claim 13 , comprising the steps of
deploying a self-propelled trolley to transfer a tip end of the wind-turbine blade to a target destination; and
deploying a self-propelled trolley to move a root end of the wind-turbine blade to a corresponding target destination.

15. A self-propelled trolley for handling a wind-turbine blade, the trolley comprises:
a driving device for propelling the trolley between locations;
a holding device configured for holding the wind-turbine blade; and
a lifting device, connected to the holding device by a universal joint, the lifting device configured to raise and lower the wind-turbine blade, wherein the holding device is connected to the lifting device with the universal joint such that the holding device may freely rotate with respect to the lifting device during transport of the wind-turbine blade.

Assignees

• Messmann Soeren
• Westergaard Jan Emil
• Blue Water Shipping As
• Siemens Ag

Inventors

• Messmann Soeren
• Westergaard Jan Emil

Classifications

• F05B2260/02

  Transport, e.g. specific adaptations or devices for conveyance · CPC title

• B66F9/065 Primary

  non-masted (mobile jacks of the garage type mounted on wheels or rollers B66F5/00) · CPC title

• B60P3/40

  for carrying long loads, e.g. with separate wheeled load supporting elements ({E04G21/14 takes precedence}; signal devices to be attached to overhanging load B60Q7/02) · CPC title

• F03D13/40

  Arrangements or methods specially adapted for transporting wind motor components · CPC title

• B60P7/12

  the load being tree-trunks, beams, drums, tubes, or the like · CPC title