INDUSTRIAL TRUCK, ESPECIALLY FORK LIFT

• US 20090020368A1
• Filed: 07/07/2008
• Published: 01/22/2009
• Est. Priority Date: 07/05/2007
• Status: Active Grant

• Current Assignee: Jungheinrich AG
• Original Assignee: Jungheinrich AG
• Inventors: Hatzl, Franz, Werner, Ralf, Bogelein, Rolf, Plastinin, Oleg, Zeidler, Christoph
• Granted Patent: US 8,191,688 B2
• Time in Patent Office: Days
• US Class Current: 187/222
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60K 2001/0455 Removal or replacement of the energy storages
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 2200/44 Industrial trucks or floor conveyors
• 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: B60Y 2200/15 Fork lift trucks, Industrial trucks
• CPC Class Codes: B66F 9/0754 Battery removal arrangements
• 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

Industrial truck, in particular fork lift, having an exchangeable battery block (13) and a battery case (3) which accommodates the battery block (13), with the battery case (3) having a lateral access opening (7) to slide the battery block (13) with a first end first into the battery case (3) and pull the battery block (13) with its first end last out of the battery case (3), with the battery block (13) accommodated in the battery case (3) being supported near its first end with at least one independent roller (25) on the battery case bottom (5), characterized in that that on the battery block (13) accommodated in the battery case (3), a projection (21) at the first end opposite the second end of said battery block, which projects over a front edge section (29) of the battery case bottom (5) near the access opening (7) and over the underside of the battery case bottom (5) downward, is provided as lifting abutment for a battery transport device (33), in particular a fork lift device to lift the battery block (13) and pull said battery block out of the battery case (3).

Claims

1. Industrial truck, in particular fork lift, having an exchangeable battery block (13) and a battery case (3) which accommodates the battery block (13), with the battery case (3) having at least one lateral access opening (7) to slide the battery block (13) with a first end first into the battery case (3) and pull the battery block (13) with its first end last out of the battery case (3), with the battery block (13) accommodated in the battery case (3) being supported near its first end with at least one independent roller (25) or, if applicable, sliding member on the battery case bottom (5), characterized in that on the battery block (13) accommodated in the battery case (3), a projection (21) at the first end opposite the second end of said battery block, which projects over a front edge section (29) of the battery case bottom (5) near the access opening (7) and over the underside of the battery case bottom (5) downward, is provided as lifting abutment for a battery transport device (33), in particular a fork lift device to lift the battery block (13) and pull said battery block out of the battery case (3).

2. Industrial truck in accordance with claim 1, characterized by a push frame (19) that carries the battery block (13) and can be removed together with the battery block (13) from the battery case (3) and/or slide into the battery case together with the battery block (13) and features the roller (25) and the lifting abutment (21).

3. Industrial truck in accordance with claim 2, characterized in that the battery block (13) can be removed from the push frame (19) outside of the battery case (3), if necessary.

4. Industrial truck in accordance with claim 1, characterized in that the roller and the lifting abutment are arranged directly at the battery block housing.

5. Industrial truck in accordance with claim 1, characterized in that the lifting abutment (21) is a slat that runs below the battery block (13) and extends transversally to the direction of sliding in the battery when the battery block (13) is being inserted into the battery case (3).

6. Industrial truck in accordance with claim 1, characterized in that near the access opening (7), the battery case bottom (5) has a recess (9) which features the front edge section (29) of the battery case bottom (5) so that the projection that forms the lifting abutment (21) for the battery transport device (33) projects through the recess (9) downward past the underside of the battery case bottom (5) when the battery block (13) is in the battery case (3).

7. Industrial truck in accordance with claim 1, characterized in that the roller bodies (25) are provided as at least two rollers for the battery block (13) on its first end with lateral distance relative to one another, with the battery case bottom (5) having guide tracks (11) for the rollers (25) which run in the direction in which the battery is inserted.

8. Industrial truck in accordance with claim 7, characterized in that the guide tracks (11) have guide profiles that are raised relative to the battery case bottom (5) and that the rollers (25) have circumferential concave guide grooves into which the guide profiles of the guide tracks (11) engage when the battery block (13) is slid into the battery case (3) and when the battery block (13) is pulled out of the battery case (3).

9. Industrial truck in accordance with claim 1, characterized in that the battery case (3) has lateral guide elements (17) for the battery block (13).

10. Industrial truck in accordance with claim 9, characterized in that the lateral guide elements (17) comprise stationary (3) rotatably mounted rollers.

11. Industrial truck in accordance with claim 1, characterized in that the battery case (3) has abutment means (35) which stop the battery block (13) when it is pulled out of the battery case (3) before the roller(s) (25), of which there is at least one, leave(s) the battery case bottom (5) when rolling out, and the abutment means (35) can be overcome by further lifting and pulling the battery block (13) out of the battery case (3).

12. Industrial truck in accordance with claim 1, characterized by an on-board mobile auxiliary device (39;

39a) to lift the battery block (13) in the battery case, pull the battery block (13) out of the battery case (3) and slide the battery block (13) into the battery case (3).