Battery-electrically operated industrial truck, particularly counterweighted fork-lift truck

• US 6,736,587 B2
• Filed: 03/22/2002
• Issued: 05/18/2004
• Est. Priority Date: 03/24/2001
• Status: Expired due to Fees

• Current Assignee: Jungheinrich AG
• Original Assignee: Jungheinrich AG
• Inventors: Verch, Jonni, Magens, Ernst-Peter
• Primary Examiner(s): Lillis, Eileen D.
• Assistant Examiner(s): Fox, Charles A.
• Application Number:
  US10/104,168
• Publication Number:
  US 20020134599A1
• Time in Patent Office: 788 Days
• Field of Search: 414/673, 414/662, 180/89.13, 180/89.15, 180/89.16, 180/89.18, 296/68
• US Class Current: 414/673
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/80 Exchanging energy storage elements, e.g. removable batteries
• CPC Class Codes: B66F 9/07545 Overhead guards
• CPC Class Codes: B66F 9/20 Means for actuating or controlling masts, platforms, or forks power take-off from vehicle transmissions, combined with vehicle propulsion systems B60K
• CPC Class Codes: Y02P 90/60 Electric or hybrid propulsion means for production processes
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A battery-electrically operated industrial truck, particularly a counterweighted lifting truck, having a basic body with a front load-bearing axle and a rear steering axle, a lift frame mounted on the basic body for a load-carrying means adjustable in height on the lift frame, and a driver'"'"'s seat assembly on the basic body including a driver'"'"'s seat, steering means, and control elements, characterized in that the basic body has a space open to the top to receive the battery and the driver'"'"'s seat assembly is arranged on a lid-like cover which is displaceably guided in an approximately horizontally displaceable fashion at the upper side of the basic body to selectively unblock the reception space.

Claims

1. A battery-electrically operated industrial truck, particularly a counterweighted lifting truck, having a basic body with a front load-bearing axle and a rear steering axle, a lift frame mounted on the basic body for a load-carrying means adjustable in height on the lift frame, and a driver'"'"'s scat assembly on the basic body including a driver'"'"'s seat, steering means, and control elements, characterized in that the basic body (10) has a space open to the top to receive the battery (38) and the driver'"'"'s seat assembly (24) is arranged on a lid-like cover (34) which is displaceably guided in an approximately horizontally displaceable fashion at the upper side of the basic body (10) to selectively unblock the reception space.

2. The industrial truck according to claim 1, characterized in that the cover (34) is laterally provided with rollers or rails which interact with rails or rollers of the basic body (10).

3. The industrial truck according to claim 1, characterized in that unlockable locking means act between the cover (34) and the basic body (10) which lock the cover in a final position.

4. The industrial truck according to claim 1, characterized in that a driving mechanism is provided for the cover (34).

5. The industrial truck according to claim 4, characterized in that sensors are provided for the weight of the load and/or the position of the load centre of gravity and/or the inclination of the lift frame and/or the lifting level of the load-bearing means (18, 20), and that a control device for the driving mechanism controls the position of the cover (34) in response to at least one of the sensor signals.

6. The industrial truck according to claim 1, characterized in that the cover (34) has associated therewith a position sensor which detects the position of the cover, and that the signal of the position sensor is provided to a control device for driving the industrial truck.

7. The industrial truck according to claim 5, characterized in that the cover (34) contains at least some part of a counterweight at the rear end.

8. The industrial truck according to claim 5, characterized in that at least one sensor (40) is arranged at the back of the cover (34) which provides a signal to the control device for driving the cover in order to automatically interrupt the motion of the cover (34) in case of an obstacle detected by the sensor (40).

9. The industrial truck according to claim 1, characterized in that the driver'"'"'s seat assembly has a driver'"'"'s cab (24) and the driver'"'"'s cab (24) is rotatably arranged on the cover (34).

10. The industrial truck according to claim 6, wherein the truck is prevented from being driven when the cover is partially or completely open.