JP2603855Y2 - Stacker crane load height, load width and load collapse detector - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention is intended to detect that the height and width of a load are larger than specified when transferring a load to a stacker crane in an automatic warehouse, and to detect the height and width of the load when the stacker crane travels. The present invention relates to a load height, a load width, and a load collapse detection device for a stacker crane that detects that the load has collapsed.

[0002]

2. Description of the Related Art As an automatic warehouse, racks are respectively arranged on both sides of a traveling path of a stacker crane, a stacker crane is run, and a loading platform is raised and lowered to face a predetermined storage shelf, and a load on the loading platform is stored. , Or placed on a storage shelf to place a load on a loading platform.

[0003] In such an automatic warehouse, when the load is moved in the rack, the size of the load is determined, so that the load can be stored in the storage shelf. When loading and storing the load on the storage shelf, the load height and load width of the load become a problem.

That is, since the maximum load height and the maximum load width of a load to be stored are determined by the size of the storage shelf, the load height of the load placed on the bed by the aforementioned forklift or the like,
If the load width is larger than the above-mentioned maximum load height and maximum load width, it cannot be stored in the storage shelf.

[0005] In addition, when the stacker crane travels, the load on the carrier collapses, and if the stacker crane continues traveling in that state, the load may fall, which is dangerous.

As described above, the conventional loading platform is provided with a sensor for detecting the height of the load, a sensor for detecting the width of the load, and a sensor for detecting the collapse of the load.

[0007]

The provision of the three sensors as described above not only complicates the sensor mounting structure, but also complicates the control circuit for stopping the operation of the stacker crane based on the detection signals of the sensors. Will be.

Accordingly, an object of the present invention is to provide a stacker crane load height, load width and load collapse detection device which can solve the above-mentioned problems.

[0009]

In a stacker crane for moving a load onto the carrier 3 from a direction perpendicular to the traveling direction, the carrier 3 is provided on a traveling vehicle 1 traveling in a predetermined direction so as to be able to move up and down. A pair of load width detecting members 16 having a predetermined height are mounted on both sides in the traveling direction so as to swing about the vertical axis when an external force is applied. The height detecting horizontal rods 17 are mounted facing each other in the traveling direction, and a sensor is mounted on the carrier 3 so as to be activated by the swing displacement of the load width detecting member 16. Stacker crane load height, load width and load collapse detector.

[0010]

[Operation] When loading a load onto the loading platform 3, if the load height of the load is greater than the distance from the loading platform 3 to the load height detection horizontal bar 17, the load is loaded. , The load width detecting member 16 swings, and the sensor operates. A pair of load width detecting members 16, 16 whose load widths are opposed to each other in the traveling direction of the stacker crane on the load carrier 3.
If the load is larger than the distance between the load width detecting members 16
, The load width detecting member 16 is displaced by swinging, and the sensor operates in the same manner as described above. If the load collapses when the load is placed on the loading platform 3 and the stacker crane 4 travels, the load interferes with the load width detecting member 16 and the load width detecting member 16
Swings and the sensor operates in the same manner as described above. Accordingly, the load height, the load width and the collapse of the load can be detected by one sensor, and not only the mounting structure of the sensor is simplified, but also the control circuit for stopping the operation of the stacker crane by the detection signal of the sensor is simplified. .

[0011]

[Embodiment] As shown in FIG. 1, a pair of guides 2 and 2 are attached to a traveling carriage 1, and a stacker crane 4 is constructed so that a carrier 3 can be moved up and down along the pair of guides 2 and 2. I have. The cargo is transferred to the carrier 3 in a direction indicated by an arrow A in FIG. 2 (front-back direction) and travels in a direction indicated by an arrow B (left-right direction).
Detectors 5 are attached to the left and right, respectively.

The detecting section 5 includes a front vertical rod 10 and an intermediate vertical rod 1.
1 and a rear vertical rod 12 and an upper horizontal rod 13 laid between the upper parts of the vertical rods.
And a width detecting member 16 composed of an intermediate horizontal member 14 and a lower horizontal member 15 laid between the upper and lower intermediate portions and the lower portion of each vertical rod.
And a load height detecting horizontal rod 17 attached to the upper horizontal rod 13.
A first arm 18 supported on the intermediate cross member 14 so as to be swingable in the horizontal plane direction, a second arm 19 supported on the lower cross member 15 so as to be swingable in the horizontal plane direction, and first and second arms 18. 1
9, a first spring 21 mounted across the intermediate cross member 14 and the first arm 18.
A second spring 22 attached to the lower cross member 15 and the second arm 19; and a lever 23 rotatably supported by the lower end of the attachment vertical rod 20 and provided on the second arm 19. The mounting vertical rod 20 is mounted on the carrier 3. As shown in FIG. 3, a cam 24 is provided on the lever 23, and a cam follower 27 provided on a movable piece 26 of a limit switch 25 is in contact with the cam 24.

When a load is loaded on the loading platform 3, if the loading height of the loading is greater than the specified height, that is, the distance from the loading platform 3 to the load-height detecting horizontal rod 17, the loading is detected. It pushes in the direction of arrow a while interfering with the horizontal lever 17. As a result, the load width detecting member 16 is displaced in the direction of arrow b, and the first and second
The arms 18 and 19 swing around the mounting longitudinal axis 20 in the direction of arrow c, and the lever 23 swings together with the second arm 19 in the same direction to operate the movable piece 26 via the cam follower 27 by the cam 24. To turn on the limit switch 25.

If the load width of the load is larger than the specified load width, that is, the distance between the pair of load width detecting members 16 opposed to the traveling direction of the stacker crane on the loading platform 3, the load is detected. 16 and is displaced in the direction of arrow b, the limit switch 25 is turned on in the same manner as described above.

When a load collapse occurs when the load is placed on the loading platform 3 and the stacker crane 4 travels, a load width detecting member 16 is provided.
Is displaced and the first and second arms 18 and 19 swing, so that the limit switch 25 is turned on as described above.

As described above, the limit switch 25 is turned on.
Then, the power source of the stacker crane is stopped by the ON signal to stop traveling and stop lifting and lowering the loading platform 3.
Prevent the next disaster.

[0017]

[Effect of the Invention] When a load is loaded on the loading platform 3, if the loading height of the loading is greater than the distance from the loading platform 3 to the loading height detection horizontal rod 17, the loading is performed. 17, the load width detecting member 16 swings and displaces, and the sensor operates. A pair of load width detecting members 16 and 1 whose load widths are opposed to each other in the traveling direction of the stacker crane on the loading platform 3.
If the distance is larger than the distance between the six, the load is the load width detecting member 1.
6, the load width detecting member 16 swings and displaces.
The sensor operates as before. If a load collapse occurs when the load is placed on the loading platform 3 and the stacker crane 4 travels, the load interferes with the load width detecting member 16 and the load width detecting member 1
6 oscillates and the sensor operates as described above. Therefore, the height, width, and collapse of the load can be detected by one sensor, which not only simplifies the mounting structure of the sensor,
The control circuit for stopping the operation of the stacker crane by the detection signal of the sensor is simplified.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a stacker crane.

FIG. 2 is a perspective view of a carrier.

FIG. 3 is a perspective view of a limit switch operating unit.

[Explanation of symbols]

Reference numeral 3 indicates a loading platform, 4 indicates a stacker crane, 16 indicates a member for detecting a load width, 17 indicates a horizontal rod for detecting a height of a load, and 25 indicates a limit switch.

Claims (1)

(57) [Scope of request for utility model registration] 1. A luggage carrier on a traveling vehicle 1 traveling in a predetermined direction.
3 is provided to be able to move up and down freely, and
In a stacker crane for transferring a load to a vehicle, a pair of load widths of a predetermined height
The detection member 16 swings around the vertical axis when an external force is applied.
Each of the load width detecting members 16 is attached so as to be displaced.
7 are mounted facing each other in the running direction, and a sensor is mounted on the loading platform 3 and the load width detecting member 16 is swung.
Characterized by being mounted to operate by displacement
Stacker crane load height, load width and load collapse detector.