JPH0627717U - Stacker crane load height, load width and load collapse detection device - Google Patents

Abstract

(57) [Summary] [Purpose] A single sensor enables detection of load height, load width, and load collapse. [Structure] The load width detecting members 16 are provided on both sides of the loading platform 3 in the traveling direction.
Respectively, and a load height detecting horizontal rod 17 is attached to the upper portion of each load width detecting member 16, and the attachment vertical rod 20 and the load width detecting member 16 supported on the load platform 3 are first and second. The second arm 18 and 19 are connected to each other, and the limit switch 25 is turned on by the lever 23 provided on the second arm 19. [Effect] When the load interferes with the load height detecting horizontal rod 17 and the load width detecting member 16 or the load collapses, the load width detecting member 16
Is displaced and the first and second arms 18 and 19 swing, thereby turning on the limit switch 25.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention detects that the load height and load width are above the specified values when transferring the load to the stacker crane bed in an automated warehouse, and the load on the bed collapsed when the stacker crane was running. The present invention relates to a stacker crane load height, load width, and load collapse detection device.

[0002]

[Prior art]

 As an automatic warehouse, racks are installed on both sides of the stacker crane's travel path, the stacker crane is run, and the loading platform is moved up and down to face a predetermined storage shelf, and the load on the loading platform is stored in the storage shelf. It is stored in a storage shelf and the load is placed on the bed.

In such an automated warehouse, since the size of the load is determined when the load is moved in the rack, it can be stored in the storage rack, but a stacker crane is moved outside the rack and a new load is loaded on the load platform by a forklift or the like. When placing and storing the cargo in the storage rack, the cargo height and cargo width become a problem.

That is, since the maximum load height and the maximum load width of the load to be stored are determined depending on the size of the storage rack, the load height and the load width of the load placed on the platform by the aforementioned forklift or the like are described above. If it is larger than the maximum load height and maximum load width, it cannot be stored in the storage rack.

Further, when the stacker crane travels, the load on the bed collapses, and if the stacker crane continues to travel in that state, the load may drop, which is dangerous.

From the above, the conventional cargo bed is provided with a sensor for detecting the height of the cargo, a sensor for detecting the width of the cargo, and a sensor for detecting the collapse of the cargo.

[0007]

[Problems to be solved by the device]

 If the three sensors are provided as described above, not only the sensor mounting structure becomes complicated, but also the control circuit that stops the operation of the stacker crane by the detection signal of the sensor becomes complicated.

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

[0009]

[Means for Solving the Problems]

 On both sides of the stacker crane 4 in the traveling direction of the load platform 3, load width detecting members 16 provided with horizontal rods 17 for detecting the load height are attached so as to be displaceable in arbitrary directions. A stacker crane load height, load width and load collapse detection device with a sensor that operates by displacement.

[0010]

[Work]

 When loading a load larger than the specified load height on the platform 3, the load width detection member 16 is displaced due to interference with the load height detection horizontal rod 17, the sensor operates, and a load larger than the specified load width is loaded. When the cargo is loaded on the loading platform 3, the sensor operates by interfering with the loading width detecting member 16 and the load is displaced when the load placed on the loading platform 3 collapses. Sensor operates.

[0011]

【Example】

 As shown in FIG. 1, a pair of guide bodies 2 and 2 are attached to a traveling carriage 1, and a stacker crane 4 is configured so that a loading platform 3 can be raised and lowered along the pair of guide bodies 2 and 2. 2, the cargo is transferred in the direction indicated by the arrow A (front-rear direction) in FIG. 2 and travels in the direction indicated by the arrow B (left-right direction). Are installed respectively.

The detection unit 5 includes a front vertical rod 10, an intermediate vertical rod 11, a rear vertical rod 12, an upper horizontal rod 13 which is horizontally mounted between the upper portions of the vertical rods, and between upper and lower intermediate portions of the vertical rods and between lower portions thereof. A load width detecting member 16 composed of an intermediate cross member 14 and a lower cross member 15, which are respectively laid horizontally, a load height detecting cross rod 17 attached to the upper horizontal rod 13, and a horizontal width direction on the intermediate cross member 14. A first arm 18 that is swingably supported, a second arm 19 that is swingably supported by the lower horizontal member 15 in the horizontal plane direction, and a mounting vertical rod 20 that is mounted between the first and second arms 18 and 19. A first spring 21 attached to the intermediate transverse member 14 and the first arm 18, a second spring 22 attached to the lower transverse member 15 and a second arm 19, and the attachment vertical member. The lever 20 is rotatably supported on the lower end of the rod 20 and includes a lever 23 provided on the second arm 19. The attachment vertical rod 20 is attached to the luggage carrier 3. As shown in FIG. 3, a cam 24 is provided on the lever 23, and a cam follower 27 provided on the movable piece 26 of the limit switch 25 is in contact with the cam 24.

When loading a load on the loading platform 3, if the loading height of the loading is larger than a specified height, that is, the distance from the loading platform 3 to the loading height detecting horizontal rod 17 is larger, the loading level is detected. It interferes with the side rail 17 and pushes it in the direction of arrow a. As a result, the load width detecting member 16 is displaced in the direction of arrow b, the first and second arms 18, 19 swing around the mounting vertical axis 20 in the direction of arrow c, and the lever 23 moves together with the second arm 19. By swinging in the same direction, the movable piece 26 is actuated by the cam 24 via the cam follower 27 to turn on the limit switch 25.

When the load width of the load is larger than the specified load width, that is, the distance between the pair of load width detection members 16 and 16 facing each other in the traveling direction of the stacker crane on the load platform 3, the load is the load width detection member. Since it interferes with 16 and is displaced in the direction of the arrow b, the limit switch 25 is turned on similarly to the above.

If a load collapse occurs when a load is placed on the loading platform 3 and the stacker crane 4 travels, the load width detection member 16 is displaced and the first and second arms 18 and 19 swing. The limit switch 25 is turned on as in the above.

As described above, when the limit switch 25 is turned on, the power source of the stacker crane is stopped by the ON signal to stop the traveling and the lifting and lowering of the loading platform 3 to prevent the secondary damage.

[0017]

[Effect of device]

 When loading a load larger than the specified load height on the platform 3, the load width detection member 16 is displaced due to interference with the load height detection horizontal rod 17, the sensor operates, and a load larger than the specified load width is loaded. When the cargo is loaded on the loading platform 3, the sensor operates by interfering with the loading width detecting member 16 and the load is displaced when the load placed on the loading platform 3 collapses. Sensor operates. Therefore, the load height, load width, and load collapse can be detected by one sensor, and not only the sensor mounting structure is simple, but also the control circuit that stops the operation of the stacker crane by the detection signal of the sensor is simple. Become.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a luggage carrier.

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

[Explanation of symbols]

3 ... loading platform, 4 ... stacker crane, 16 ... loading width detecting member, 17 ... loading height detecting horizontal rod, 25 ... limit switch.

Claims (1)

[Scope of utility model registration request] 1. A load width detecting member 16 provided with horizontal rods 17 for detecting a load height is attached to both sides of the stacker crane 4 in the traveling direction on the loading platform 3 so as to be displaceable in an arbitrary direction, and the loading width on the loading platform 3 is set. A stacker crane load height, load width, and load collapse detection device, which is equipped with a sensor that operates according to the displacement of the detection member 16.