Container stacking storage system loading trolley having first and second lift drives

1. A container stacking storage system loading trolley comprising:

a chassis;

a container seat that is height-adjustable relative to the chassis, the container seat comprising a receiving region with a container contact surface,

a lifting device, operable in a lifting direction, being arranged between the chassis and the container seat, the lifting device comprising a first lifting drive and a second lifting drive;

the second lifting drive being configured to act on an unlocking device that is configured to act on holding elements of a container stacking storage system.

2. The loading trolley according to claim 1 , wherein the unlocking device is arranged on the container seat.

3. The loading trolley according to claim 1 , wherein the unlocking device comprises an unlocking element arrangement movable in the lifting direction relative to the container seat.

4. The loading trolley according to claim 3 , wherein the unlocking element arrangement comprises multiple unlocking elements arranged in a region of corners of the container seat, and wherein at least some of the unlocking elements comprise a centering surface arrangement that is directed towards the receiving region.

5. The loading trolley according to claim 1 , wherein the container seat is mounted in a floating manner relative to the chassis.

6. The loading trolley according to claim 3 , wherein the unlocking element arrangement protrudes past the container contact surface in the receiving region in a transport position of the container seat.

7. The loading trolley according to claim 1 , further comprising a sensor arrangement configured to monitor a state of an operating region of the unlocking device.

8. The loading trolley according to claim 7 , wherein the sensor arrangement is arranged outside of the unlocking device.

9. The loading trolley according to claim 1 , further comprising a position sensor configured to determine a position of the loading trolley.

10. The loading trolley according to claim 9 , further comprising a sensor arrangement configured to monitor a state of an operating region of the unlocking device, the sensor arrangement forming at least a part of the position sensor.

11. The loading trolley according to claim 1 , wherein the lifting device comprises a traction chain.

12. The loading trolley according to claim 11 , wherein the traction chain comprises a first strand, which is arranged between the chassis and the container seat, and a second strand, which is directed transversely to the first strand.

13. The loading trolley according to claim 1 , wherein the container seat is movable over a lifting path and is guidable on the chassis over the lifting path.

14. The loading trolley according to claim 1 , wherein the container seat comprises in the container contact surface at least two notches that open to at least one side of the container contact surface.

15. The loading trolley according to claim 1 , wherein the first lifting drive is arranged to adjust a height of the container seat relative to the chassis.

16. The loading trolley according to claim 1 , wherein the first lifting drive comprises a motor and the second lifting device comprises a hydraulic or pneumatic cylinder.

17. The loading trolley according to claim 1 , wherein the holding elements comprise levers pivotably connected to the container storage stacking system,

wherein the unlocking device comprises polygonal pieces connected to at least one frame, the polygonal pieces being arranged at corners of the container seat to be liftable and lowerable relative to the container seat, and

wherein the polygonal pieces have contact surfaces that engage the levers of the holding elements of the container storage stacking system, to pivotably displace the levers to stack a container in or remove a container from the container storage stacking system.

18. The method according to claim 1 , wherein the second lifting drive is arranged on a bottom side of the container seat.

19. A method of moving a container on the loading trolley according to claim 1 , the method comprising:

lifting the container seat, on which the container is supported on the container contact surface, relative to the loading trolley chassis; and

lifting the container relative to the container seat to a position above the container contact surface.

20. The method according to claim 19 , wherein, when lifting the container relative to the container seat, a holding element of a container stacking storage system is unlocked.

21. The method according to claim 20 , further comprising sensing a position of the holding element to determine whether the holding element is locked or unlocked.

22. The method according to claim 20 , wherein, when the holding element is unlocked, the method further comprises lowering the container to pass the unlocked holding element.

23. The method according to claim 20 , wherein, when the holding element is unlocked, the method further comprises lowering unlocking elements of the loading trolley to locate the holding elements to a locking position.

24. The method according to claim 20 , wherein the holding element of the container storage stacking system comprises a lever pivotably connected to the container storage stacking system.

25. A container stacking storage system loading trolley comprising:

a chassis;

a container seat that is height-adjustable relative to the chassis, the container seat comprising a receiving region with a container contact surface,

a lifting device, operable in a lifting direction, being arranged between the chassis and the container seat, the lifting device comprising a first lifting device comprising a motor and a second lifting drive comprising a hydraulic or pneumatic cylinder;

the second lifting drive being configured to act on a polygonal piece that is configured to act on levers of a container stacking storage system.