Load handling device for an industrial truck

• US 6,851,915 B2
• Filed: 05/10/2002
• Issued: 02/08/2005
• Est. Priority Date: 05/11/2001
• Status: Expired due to Fees

• Current Assignee: Linde Material Handling GmbH (KION GROUP AG)
• Original Assignee: Linde AG (Linde Plc)
• Inventors: Brown, David John, Warner, Barry Michael
• Primary Examiner(s): Keenan, James W.
• Application Number:
  US10/143,555
• Publication Number:
  US 20030007856A1
• Time in Patent Office: 1,005 Days
• Field of Search: 414/631, 414/659, 414/661, 414/663, 414/664, 414/667, 187/238
• US Class Current: 414/667
• CPC Class Codes: B66F 9/122 longitudinally movable

Abstract

The subject of the invention is a load handling device for an industrial truck having a lift frame, a lift carriage which can be displaced along the lift frame, and a reach carriage guided so as to move on the lift carriage. A load pick-up device is arranged on the reach carriage. According to the invention, the lift carriage is guided on the outer sides of the lift frame by rollers, and the reach carriage is guided on the outer sides of the lift carriage. In order to displace the reach carriage, a hydraulic reach cylinder is provided on each side of the lift frame and is fixed at one end to the lift carriage and at the other end to the reach carriage.

Claims

1. A load handling device for an industrial truck, comprising:

a lift frame;

a lift carriage displaceable along the lift frame;

a reach carriage guided so as to move on the lift carriage; and

a load pick-up device arranged on the reach carriage,

wherein the lift carriage is guided on the outer sides of the lift frame by first rollers, and

wherein the lift carriage includes opposed outer sides and the reach carriage is guided on the outer sides of the lift carriage such that the reach carriage is movable towards and away from the lift carriage.

2. The load handling device according to claim 1, wherein the reach carriage is guided on the lift carriage by second rollers, and the second rollers for guiding the reach carriage on each side of the lift frame are each assigned an upper and a lower guide rail.

3. The load handling device according to claim 2, wherein the second rollers for guiding the reach carriage are fixed to the lift carriage, and the guide rails are fixed to the reach carriage.

4. The load handling device according to claim 3, wherein in order to displace the reach carriage, a hydraulic reach cylinder is provided on each side of the lift frame and is fixed at one end to the lift carriage and at the other end to the reach carriage.

5. The load handling device according to claim 3, wherein the reach carriage is tiltable relative to the lift carriage.

6. The load handling device according to claim 2, wherein in order to displace the reach carriage, a hydraulic reach cylinder is provided on each side of the lift frame and is fixed at one end to the lift carriage and at the other end to the reach carriage.

7. The load handling device according to claim 2, wherein the reach carriage is tiltable relative to the lift carriage.

8. The load handling device according to claim 1, wherein in order to displace the reach carriage, a hydraulic reach cylinder is provided on each side of the lift frame and is fixed at one end to the lift carriage and at the other end to the reach carriage.

9. The load handling device according to claim 4, including means for synchronizing the movements of the reach cylinders.

10. The load handling device according to claim 9, wherein the reach carriage is tiltable relative to the lift carriage.

11. The load handling device according to claim 9, wherein the reach cylinders provided in the area of the lift carriage and at least one further hydraulic load provided in the area of the lift carriage are supplied by a common hydraulic feed line.

12. The load handling device according to claim 8, wherein the reach cylinders provided in the area of the lift carriage and at least one further hydraulic load provided in the area of the lift carriage are supplied by a common hydraulic feed line.

13. The load handling device according to claim 12, wherein in the area of the load handling device there is arranged at least one electrically driveable, hydraulic directional valve with which at least one of the reach cylinders and the at least one further hydraulic load are connectable to the feed line.

14. The load handling device according to claim 12, wherein the further hydraulic load includes at least one of a tilt cylinder and a side shift cylinder.

15. The load handling device according to claim 8, wherein the reach carriage is tiltable relative to the lift carriage.

16. The load handling device according to claim 1, wherein the reach carriage is tiltable relative to the lift carriage.

17. A load handling device for an industrial truck, comprising:

a lift frame;

a lift carriage displaceable along the lift frame;

a reach carriage guided so as to move on the lift carriage; and

a load pick-up device arranged on the reach carriage;

wherein the lift carriage is guided on the outer sides of the lift frame by first rollers,

wherein the reach carriage is guided on the outer sides of the lift carriage,

wherein the reach carriage is tiltable relative to the lift carriage, and

wherein the reach carriage is guided on the lift carriage by second rollers and, in order to adjust the tilt of the reach carriage, on each side of the lift frame at least one of the second rollers guiding the reach carriage is adjustable in the vertical direction.

18. The load handling device according to claim 17, wherein the adjustable second rollers are mounted by a rotatable eccentric.

19. The load handling device according to claim 18, wherein in order to tilt the reach carriage, each adjustable second roller is assigned a hydraulic tilt cylinder.

20. The load handling device according to claim 18, wherein the second rollers are movable along upper and lower guide rails, wherein the second rollers for guiding the reach carriage and the guide rails are arranged in such a way that when the reach carriage is displaced forwards, a rearward adjustment of the tilt of the reach carriage is automatically carried out.

21. The load handling device according to claim 17, wherein in order to tilt the reach carriage, each adjustable second roller is assigned a hydraulic tilt cylinder.

22. The load handling device according to claim 21, wherein the second rollers are movable along upper and lower guide rails, wherein the second rollers for guiding the reach carriage and the guide rails are arranged in such a way that when the reach carriage is displaced forwards, a rearward adjustment of the tilt of the reach carriage is automatically carried out.

23. The load handling device according to claim 17, wherein the second rollers are movable along upper and lower guide rails, wherein the second rollers for guiding the reach carriage and the guide rails are arranged in such a way that when the reach carriage is displaced forwards, a rearward adjustment of the tilt of the reach carriage is automatically carried out.

24. A load handling device for an industrial truck, comprising:

a lift frame;

a lift carriage displaceable along the lift frame;

a reach carriage guided so as to move on the lift carriage; and

a load pick-up device arranged on the reach carriage,

wherein the lift carriage is guided on the outer sides of the lift frame by first rollers,

wherein the reach carriage is guided on the outer sides of the lift carriage,

wherein the reach carriage is tiltable relative to the lift carriage, and

wherein the reach carriage is guided on the lift carriage by second rollers and the second rollers are movable along upper and lower guide rails, wherein the second rollers for guiding the reach carriage and the guide rails are arranged in such a way that when the reach carriage is displaced forwards, a rearward adjustment of the tilt of the reach carriage is automatically carried out.

25. The load handling device according to claim 24, wherein the upper and the lower guide rails are not parallel to each other.

26. The load handling device according to claim 25, wherein the guide rails are inclined with respect to the horizontal in such a way that when the reach carriage is displaced, an end of the load pick-up device remote from the lift frame does not change its vertical position.