JPS6216913B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a container lift used for transporting containers in buildings such as multi-story warehouses and multi-level distribution centers where freight is relayed, stored, and sorted.

As shown in Fig. 1, conventional container lifts are equipped with a lifting beam a that can be vertically raised and lowered by a lifting rope j via a sheave i, and a spretsher is installed on the lower surface of the lifting beam a. b can be detachably attached by a spreader holding device g.

At the front and back of the spreader b (in the left-right direction in FIG. 1) are wheel projecting portions e having wheels f, and the wheel projecting portions e can move horizontally forward and backward relative to the spreader b in the longitudinal direction. A container c is suspended below the spreader b by means of a vertically expandable twist lock k.

On the other hand, guide rails d are horizontally attached to the walls of floors h of each floor of a building such as a multi-story warehouse or a multi-story distribution center at a position slightly higher than the height of the container c.

In such a conventional device, when a container c is suspended from a lifting beam a via a twist lock k and a spreader b and rises to a height where the lower surface of the container c is slightly higher than the floor h of a predetermined floor, the wheel overhangs When e is extended in the front-rear direction and wheel f is positioned directly above guide rail d, and lifting beam a is lowered, wheel f is supported by guide rail d.

Here, move the spretzer b to the lifting beam a.
The spreader b is moved horizontally by rolling the wheels f on the guide rail d, and when the container c reaches a predetermined position on the floor h, the twist lock k is extended downward and the container c is placed on the floor h. , the twist lock k is separated from the container c, and when the container c is carried out, it is carried out in the reverse order to the above-mentioned order.

In this way, the conventional device requires many operations such as extending the wheel extension part e, separating the spreader b from the lifting beam a, and extending the twist lock k, and the structure of the spreader b etc. becomes complicated, and Also, a guide rail d had to be provided for each floor, making the device as a whole uneconomical and lacking in flexibility.

The present invention eliminates such conventional drawbacks and includes a lifting beam that can be raised and lowered, a rail extending in the longitudinal direction of the lifting beam is attached to the lower surface of the lifting beam, and a brake device is provided on the rail. Two sets of telescopic fork devices are suspended in a movable manner through wheels, and each of the telescopic fork devices is provided with a fork that is perpendicular to the rail and is extendable and retractable to the outside of the lifting beam. The telescopic fork device is equipped with a drive device consisting of a motor and a drum, and a rope with both ends wound around the drum is routed around guide sheaves provided at both ends of the lifting beam, and the required position of the rope is connected to the other telescopic fork. A pick fork device is attached thereto, and the fork is provided with a container gripping device.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 6.

Reference numeral 1 denotes a building such as a warehouse having a multi-layered floor 3 on which loads such as containers 2 are placed, and a lifting beam 7 is moved through a seam 4 and a lifting rope 5 by driving a lifting drum (not shown). It penetrates the floor 3 and is installed so that it can be raised and lowered freely from the bottom floor to the top floor.
A balance weight 6 is attached to reduce the load on the elevating drum. The lifting beam 7 is an elongated rectangular parallelepiped, and is arranged so that two long sides in the longitudinal direction face the floor 3. On the warehouse side, a guide 8 for regulating the vertical posture of the lifting beam 7 is provided vertically facing the short side which is orthogonal to the two long sides, and two sets of upper and lower guide rollers 9 sandwiching the guide 8. Two upper and lower guide rollers 10 rolling on the surface of the guide 8 facing the short side are pivotally attached to each of the short sides. Rails 11 are provided at the bottom of both long sides of the lifting beam 7, and both rails 11
A telescopic fork device 13 is suspended below the lifting beam 7 and perpendicular to the long side via wheels 12 equipped with a brake device. The telescopic fork device 13 includes a fork 14 that extends and retracts in three steps outward on both long sides, and a gripping device 15 such as a twist lock for gripping the container 2 is attached to the tip of the fork 14. The fork 14 can be expanded and contracted by a drive device 19 consisting of a motor 16 provided in the telescopic fork device 13, a pinion 17 fitted to the output shaft of the motor 16, a rack 18 attached to the fork 14, etc. There is. Telescopic fork device 1
3, when the device 13 comes off the lifting beam 7 and grips the container 2, the wheel 12 on the opposite side with the fork 14 extended tends to lift, but in order to prevent this lifting, the rail 11 is placed below the wheel 12. Anti-lifting wheel 20 that comes into contact with the lower surface of
is installed. Two sets of the above-mentioned telescopic fork devices 13 are suspended from the lifting beam 7, and a driving device consisting of a motor 21 and a drum 22 is attached to one of them. The wire rope 23, one end of which is wrapped around the drum 22, extends in the direction of the other telescopic fork device 13', changes direction at a guide sheave 24' provided near the end guide 8 of the lifting beam 7, and then rotates the telescopic fork along the way. The lifting beam 7 is clamped to the fork device 13'.
Guide sheave 2 provided near the other end guide 8
4 and then wound onto a drum 22.

When the container 2 is stored in a predetermined floor of the warehouse 1 by the above-mentioned container lift, the container 2 is carried to the lowest floor of the warehouse by the transport vehicle 25 (FIGS. 2 and 3). Then, the telescopic fork device 13 is contracted and stored directly below the lifting beam 7, and the lifting beam 7 is lowered to just above the container 2, and the container 2 is gripped by the gripping device 15. In this state, the container 2 and the transport vehicle 25 are separated, and the lifting beam 7
rise and stop at a predetermined level. Next, the fork 14 is extended by the drive device 19 and the container 2
It is positioned slightly above the floor 3 on which it is placed. The lifting beam 7 has a guide 8 and a guide roller 9
Since the posture is regulated by the container 2, it will not fall over even if the container 2 is moved to the outside of the lifting beam 7. Also, as mentioned above, since the container 2 is equipped with wheels 20 to prevent lifting, the telescopic fork can be easily moved. The device 13 will not rise or tilt. Next, the lifting beam 7 is lowered a little, the container 2 is grounded on the floor, the gripping device 15 and the container 2 are separated, and the container 2 is placed on the floor 3.

When carrying out the container 2 stored in the warehouse, the above-mentioned order may be reversed.

Here, the operation of the lifting beam 7 to grip the container 2 will be described in more detail.

The container 2 has various sizes such as 20 feet and 40 feet, and the gripping position of the container 2 naturally changes, but this is handled by moving the telescopic fork device 13 in the present invention. That is,
Either telescopic fork device 13
When the brakes of the two wheels 12 are released and the drum 22 is appropriately rotated by the motor 21, the telescopic fork device 13 whose brake has been released moves in accordance with the movement of the wire rope 23. When moving the other telescopic fork device 13', the brakes are applied to the wheels 12 of the telescopic fork device 13 that has been moved, the brakes of the other telescopic fork device 13' are released, and the above-mentioned operation is repeated. Just give it back. Therefore, the telescopic fork devices 13, 13' can be moved and positioned anywhere within the range of movement on the rail 11, and can grip the container 2 regardless of its size. Furthermore, if the brakes of both telescopic fork devices 13 and 13' are released when gripping the container 2, even if the gripping device 15 is gripped by a twist lock or the like, the container 2 can be gripped easily.
can be grasped.

Note that the fork is not limited to three-stage expansion and contraction.

Since the present invention is configured as described above, (i) it is no longer necessary to provide rails for horizontal movement of the spretzer on each floor of buildings such as warehouses, and the telescopic fork device that functions as the spretzer can be lifted; Since there is no need to separate from the beam, containers can be loaded from the transport vehicle at the lowest level, and horizontal alignment can be performed when loading containers onto the transport vehicle. (ii) Containers can be placed on a predetermined level. Since the vertical movement of the container required for unloading is performed by the movement of the lifting beam, the range of vertical movement is larger compared to the conventional method of expanding and contracting the twist lock.
(iii) The telescopic fork device equipped with a gripping device can be moved individually in the longitudinal direction of the lifting beam, so there is no restriction on the length of the container. (iv) By moving and activating the telescopic fork device as appropriate, multiple small containers can be placed on the same floor, making it possible to save space in the warehouse. (v) Depending on the type of container, the container can be handled only on one side of the lifting beam;
It exhibits excellent effects such as safety because there is no need for people to approach the lifting beam and the container moving passageway where containers go up and down.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional device, Fig. 2 is a perspective view of an embodiment of the present invention, Fig. 3 is a vertical sectional view of the main part of a warehouse, and Figs. 4 to 6 are a perspective view of an embodiment of the present invention. Show 4th
The figure is a front view, FIG. 5 is a plan view, and FIG. 6 is a side view. 1 is a warehouse, 2 is a container, 7 is a lifting beam, 8 is a guide, 9 and 10 are guide rollers, 1
1 is a rail, 13 is a telescopic fork device, and 19 is a drive device.

Claims (1)

[Claims] 1 Equipped with a lifting beam that can be raised and lowered, a rail extending in the longitudinal direction of the lifting beam is attached to the lower surface of the lifting beam, and two sets of telescopic fork devices are run through wheels equipped with a brake device on the rail. The telescopic fork device is provided with a fork that is perpendicular to the rail and is extendable and retractable to the outside of the lifting beam, and one of the telescopic fork devices is provided with a drive device comprising a motor and a drum. A rope with both ends wound around the drum is hung around guide sheaves provided at both ends of the lifting beam, and a desired position of the rope is connected to the other telescopic fork device, and a container is attached to the fork. A container lift characterized by being equipped with a gripping device.