JPH0211468A - Hand truck with turn table - Google Patents

Abstract

PURPOSE:To perform a container picking work and a re-warehousing work with high efficiency by providing a means to respectively lock a truck and a turn table and a restraining means to release the truck from locking only during locking of the turn table. CONSTITUTION:When a container 17 is transferred to a hand truck 1, an elevating lever 12 of a truck lock means 6 is lowered to lock the hand truck 1. Further, an elevating lever 20 of a turn table lock means 9 is engaged with a lock tool 18a of a turn table 8 to lock the turn table 8. Meanwhile, during a picking work in which a necessary cargo is taken out from the container 17, a foot pedal 23 of the turn table lock means 9 is pedaled down to disengage the elevating lever 20 from the lock tool 18a, and the container 17 is rotated around a vertical pivot 16 togetherwith the turn table 8. Only during working of the turn table means 9, a restraining means 10 is actuated, and release of the truck lock means 6 is practicable.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a hand cart with a turntable installed in a cargo handling area of an automated warehouse.

(Prior art) A hand truck that can be moved on guide rails between a loading/unloading crane and a loading/unloading position is installed in a cargo handling area of an automated warehouse. It is known to provide turntables with load supports.

According to such a handcart with a turntable, the handcart transports the container taken out from the crane onto the turntable of the handcart at the cargo delivery position to the loading/unloading position. When performing pinking work to take out the necessary cargo from a container, the container can be rotated using the turntable, making the picking work easier and more efficient than when the orientation of the container is fixed. However, there were the following problems.

(Problem to be Solved by the Invention) In other words, since this type of container has a rectangular planar shape rather than a square, it is necessary to rotate the container using a turntable for the pinking operation and then re-stock the container. In this case, it is necessary to return the container to the predetermined orientation for loading and unloading, but if you forget to do this and return the hand truck to the loading/unloading position, the running fork of the loading/unloading crane will move the hand truck You may not be able to scoop up the container on top, or even if you are able to scoop up the container with a running fork, you will not be able to transfer the container to the shelf.
A very dangerous situation arises.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a system in which a load supported by a load support provided on the turntable is transferred at least by a running fork of the crane. a turntable locking means for locking the turntable in a first orientation, and a trolley locking means for locking the handcart at the cargo delivery position and the cargo loading/unloading position, and the turntable locking means This invention proposes a handcart with a turntable, which is provided with a restraining means that enables the locking means to be unlocked only when the turntable is locked in the first direction. (Operation) When unloading a load, such as a container, using a crane for unloading people, a hand truck whose turntable is locked by the turntable locking means in the first direction is, of course, kept waiting at the load transfer position. At this time, the handcart can be locked at the cargo delivery position by the cart locking means.

Once the running fork of the crane has unloaded the container onto the load support provided on the turntable of the hand truck, the truck locking means is unlocked and the hand truck is moved to the loading/unloading position. After locking the handcart again using the cart locking means, the pinking operation is performed to take out the necessary cargo from the container. At this time, the turntable locking means is unlocked and the container is removed together with the turntable to facilitate the picking operation. It can be rotated in any direction.

After the picking operation is completed, when returning the handcart from the loading/unloading position to the loading/unloading position, first unlock the turntable locking means and turn the turntable until the container returns to its original first orientation. While rotating, the turntable is locked by the turntable locking means, and then the handcart is unlocked by the cart locking means and the handcart is moved from the loading/unloading position to the loading/unloading position.

If an attempt is made to unlock the trolley locking means in order to move the handcart to the cargo delivery position without the container being rotated back to its original first orientation using the turntable, the restraining means Since unlocking of the cart is prevented, there is no fear that the hand cart cannot be moved to the cargo delivery position, that is, the hand cart is returned to the cargo delivery position with the container not in the first orientation.

(Effects of the Invention) As described above, according to the handcart with a turntable of the present invention, picking work from a container on the handcart that has been carried out to the loading/unloading position is performed by locking the handcart at the loading/unloading position. By being able to hold the container and rotating the container on the handcart, it can be easily and efficiently carried out even if the container is large. In addition, it is possible to reliably prevent containers from being returned to the cargo delivery position using a push cart without remembering to rotate the container back to the predetermined loading/unloading position. Work can be done safely and reliably.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, reference numeral 1 denotes a handcart, which can move on guide rails 3 between a loading/unloading position A for loading/unloading cargo and a loading/unloading crane 2, and a loading/unloading position B. Second
As shown in the figure, the handcart 1 has a guide rail 3
It is equipped with wheels 4 that roll on it, a push handle 5, a trolley locking means 6, a turntable 8 having a load support 7, a turntable locking means 9, and a restraining means 10.

As shown in FIG. 3, the trolley locking means 6 includes a lifting rod 12 that is movably supported by a lifting guide 11 fixed to the handcart 1 directly below the hand handle 5, and an upper end portion of the lifting rod 12. A lever 13 is connected to the lever 13, and a lever 13 is provided on the floor side so that the lower end of the lifting rod 12 can be fitted between the cargo transfer position A and the cargo loading/unloading position B shown in FIG. It is composed of a stop hole 14.

The turntable 8 is mounted on a vertical support shaft 1 on the handcart 1.
5, and supported by a plurality of supporting rollers 16 in the circumferential direction, and on the upper side, a pair of left and right rollers supporting both long sides of the container 17, which has a rectangular planar shape. A load support 7 is provided in a protruding manner.

The turntable locking means 9 includes locked tools 18a18b and 19a attached to the bottom surface of the four corners of the turntable 8.
, 19b, a lifting rod 20 provided on the handcart 1 as shown in FIG. 23 and the lifting rod 2 by means of an interlocking pin 24.
0 and a foot lever 25 that is interlocked with the lower end of the lever. The locked tools 18a to 19b are provided on both sides of the recess 26 (both sides in the rotational direction of the turntable 8) into which the upper end of the elevating rod 20 fits.
It is provided with an inclined guide surface 27 for guiding.

The restraining means 10 is a lifting rod 1 of the bogie locking means 6.
Rondo 28 protrudes from 2 toward the turntable 8, and check plates 29 protrude from both sides of the turntable 8.
a, 29b.

The container 17 has its long side direction 17 as shown in FIG.
a is the running fork 3 in the loading/unloading crane 2
0 and is parallel to the moving direction 30a of moving in and out, and the short side direction 17
When b is supported on the turntable a of the handcart 1 in a first direction parallel to the moving direction of the handcart 1, the running fork 30 moves the handcart 1
and crane 2. However, when the hand truck 1 receives the container 17 taken out by the crane 2, the hand truck 1 is moved to the cargo delivery position A shown by the imaginary line in FIG.
2 is a locking hole 14 provided on the floor side of the cargo delivery position A.
to lock the handcart 1. On the other hand, in the turntable 8, the pair of left and right load supports 7 are oriented parallel to the moving direction 30a of the running fork 30 (orthogonal to the moving direction of the hand truck 1), and the lifting rod of the turntable locking means 9 is 20 is fitted into the locked tool 18a (or 18b) on the turntable 8 side and locked.
At this time, the pair of check plates 29ia and 29b of the check means 10
are located on both sides parallel to the moving direction of the handcart 1 and are away from the ronds 28 protruding from the lifting rod 12 of the cart locking means 6.

In this state, the running fork 30 of the crane 2 stopped at a predetermined position places the container 17 on the turntable 8 of the hand truck 1, and the pair of left and right load supports 7 support both long sides of the container 17. Transfer. After the transfer is completed, lift the lifting rod 12 of the trolley locking means 6 using the lever 13 to release it from the locking hole 14, unlock the handcart 1, and then pull the handcart 1 toward you to the loading/unloading position. Move on the guide rail 3 to B.

When the hand truck 1 reached the loading/unloading position B, the lifting rod 12 of the truck locking means 6 was lowered and fitted into the locking hole 14 at the loading/unloading position B, thereby locking the hand truck 1. In this state, a pinking operation is performed to take out the necessary cargo from the container 17. At this time, the container 17
is an orientation in which the short side direction 17b is parallel to the moving direction of the handcart 1. If the load is in a position where it is difficult to pink the load in such an orientation, step down on the foot lever 25 of the turntable locking means 9 to lock the lifting rod 20.
is lowered against the spring 21, whereby the locked tool 18
By removing the lifting rod 20 from the recess 26 of a (or 18b), the container 17 is removed together with the turntable 8.
can be rotated around a vertical support shaft 150. At this time, if you take your foot off the foot lever 25 and return the lifting rod 20 to the upper limit position by the urging force of the spring 21, when the turntable 8 rotates 90 degrees, the locked tool 1
The elevating rod 20 automatically fits into the recess 26 of 9a or 19b, and the turntable 8 is locked.

As mentioned above, during the picking operation at the loading/unloading position B, the container 17 should be oriented so that the short side direction 17b is parallel to the moving direction of the hand truck 1, and the long side direction 17a is parallel to the moving direction of the hand truck 1. The locking operation can be performed easily and efficiently by locking in any one of the parallel directions. After the pinking work is completed, the handcart 1 is unlocked by the cart locking means 6, and the handcart 1 is moved from the loading/unloading position B to the loading/unloading position A.
However, when lifting the lifting rod 12 with the lever 13 to release the lock of the handcart 70, the restraining means 1
Since the rod 28 of 0 also rises together, if the turntable 8 moves in the long side direction 17a of the container 17 supported
is in the direction parallel to the moving direction of the handcart 1, that is, when the lifting rod 2 is in the recess 26 of the locked tool 19a or 19b.
0 is fitted to lock the turntable 8, the check plate 29a or 29 is fitted as shown by the phantom line in FIG.
Since b is located directly above the rod 28,
The restraining plate 29a or 29b prevents the rod 28 from rising, and by extension the lifting rod 12 from rising, making it impossible to unlock the handcart 1.

In such a case, step down on the foot lever 25 of the turntable locking means 9 to move the lifting rod 20 to the spring 2.
1 and lower the locked tool 19a (or 19
By removing the lifting rod 20 from the recess 26 in b), the container 17 is moved together with the turntable 8 onto the vertical support shaft 15.
The container 17 is returned to the first direction in which the short side direction 17b is parallel to the moving direction of the handcart 1, and in this state, the lifting rod 20 is inserted into the recess of the locked tool 18a or 18b. 26 to lock the turntable 8. In this state, both of the restraining plates 29a and 29b are separated from the position directly above the rod 28 of the restraining means 10, so that the lifting rod 12 of the bogie locking means 6 can be raised.

Therefore, by raising the lifting rod 12 using the lever 13 and disengaging it from the locking hole 14, the hand truck 1 is unlocked, and the hand truck 1 is manually moved from the loading/unloading position B to the loading/unloading position A. I can do it. At the cargo delivery position A, once the lifting rod 12 is fitted into the locking hole 14 and the hand truck 1 is locked, the container 17 on the hand truck 1 is scooped up by the running fork 30 of the loading/unloading crane 2. You can take it and restock it.

Of course, at this time, since the long side direction 17a of the container 17 is in the first direction parallel to the moving direction 30a of the running fork 30, the container 17 can be re-entered without any problem.

The lever 13 is rotated laterally with the lifting rod 12 of the trolley locking means 6 raised and is locked to a locking step 11a (see FIG. 3) provided on the lifting guide 11. It's okay. In this case, in order to prevent the rod 28 of the restraining means 10 from rotating together via the lifting rod 12, it is preferable to support either the lever 13 or the rod 28 so that it can only rotate with respect to the lifting rod 12. I can do it.

Further, the turntable lock means 9 locks the turntable 8.
The turntable 8 may be locked only when the container 17 supported above is in a first direction in which its long side direction 17a is parallel to the moving direction 50a of the running fork 3o. , that is, in the above embodiment,
It is also possible to omit the locked tools 19a and 19b.

Although we have explained an example in which the hand truck 1 with a turntable is used for picking work from the container 17 that has been delivered, it is also possible to move the cargo (container 17, etc.) to be carried onto the hand truck 1 at the loading/unloading position B using a forklift or the like. The hand truck 1 with a turntable can also be used for carrying the load to the load delivery position A using the hand truck 1 and warehousing it using the loading/unloading crane 2, or for the reverse unloading operation.

[Brief Description of the Drawings] Fig. 1 is a plan view, Fig. 2 is a side view showing only the push cart, Fig. 3 is a longitudinal side view showing the cart locking means, and Fig. 4 is a side view showing the turntable locking means. It is a diagram. 1... Hand truck, 2... Crane for loading and unloading, 3...
...Guide rail, 6...Dolly locking means, 7...
Load supporter, 8... Turntable, 9... Turntable locking means, 10... Checking means, 12.20.
... Lifting rod, 13... Lever, 14... Locking hole, 1
7...Container, 18a-19b...Locked tool, 2
1...Spring, 25...Foot lever, 28.
...Rondo, 29a. 29b... Check plate, 30... Running fork.

Claims (1)

[Claims] A turntable is installed on a hand truck that can be moved on guide rails between the loading/unloading crane and loading/unloading position. a turntable locking means for locking the turntable in a state where the load is at least in a first direction to be transferred by a running fork of the crane; and locking the handcart at the load transfer position and the load loading/unloading position. a hand push with a turntable, comprising: a dolly locking means; and a restraining means that enables unlocking of the dolly locking means only when the turntable locking means locks the turntable in the first direction. Dolly.