JPS6141681Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a rack in which the load is stored along the entire length of the gravity conveyor, with the upper end of the inclined gravity conveyor serving as the load entrance and the lower end of the slope serving as the load exit. To provide a rack inventory detection device that can detect the loaded state from a warehousing crane running in a passage adjacent to the loading entrance of the rack.

Hereinafter, one embodiment of the present invention will be explained based on the attached illustrative drawings. In Fig. 1, 1 is easy, 2 is
3 is a crane for warehousing, 3 is a crane for warehousing, 4 is a conveyor for warehousing, and 5 is a conveyor for warehousing. The rack 1 has a large number of gravity conveyors 6 in the vertical and horizontal directions, the loading entrance 7 at the sloping upper end is adjacent to the traveling path 8 of the storage crane 2, and the loading exit 9 at the sloping lower end is adjacent to the traveling path 8 of the storage crane 2. It is installed adjacent to the travel path 10 of the crane 3 for unloading. The warehousing crane 2 and the warehousing crane 3 are conventionally well-known cranes having a liftable carriage 12, 13 equipped with a load transfer drive conveyor 11, as shown in FIG. Each gravity conveyor 6 has a pair of left and right roller rails 14.
are arranged side by side in an inclined state, and a stopper (not shown) that can be freely moved in and out is provided at the loading outlet 9.
It is equipped with

2 and 3, reference numeral 15 denotes a vertically movable body, which is placed at an intermediate position between a pair of left and right roller rails 14 at the loading entrance 7 of the gravity conveyor 6, around a horizontal horizontal axis 16. It consists of a lever 17 that is pivotally supported so as to be able to swing up and down, a roller 18 that is pivotally supported on the outer end of this lever 17, and a counterweight 19 that is attached to the inner end of the lever 17. . Reference numeral 20 denotes a reflective plate for detection, which is provided protruding from the side surface of the outer end of the lever 17 in the vertically movable body 15, and whose mounting angle can be adjusted around the spindle 18a of the roller 18. I can do it. The vertically movable body 15 is maintained in the protruding position shown by the imaginary line in FIG. 2 by the side of the lever 17 on which the counterweight 19 is attached comes into contact with the bracket 21 that supports the lever 17.

22 is a reflective photoelectric detector attached to the elevating carriage 12 of the warehouse crane 2, and when the vertically movable body 15 is in the protruding position shown by the imaginary line in FIG. The light beam projected from the light section passed below the detection target reflecting plate 20, and the reflected light beam was not detected, but was placed on the roller rail 14 as shown by the solid line in Figure 2. When the vertically movable body 15 is depressed by the load 23 via the roller 18, the light beam projected from the light projecting section of the detector 22 is reflected by the detection object reflecting plate 20, The reflected light beam is configured to be detected by a light receiving section of the detector 22.

According to the above configuration, in order to carry the load 23 into the rack 1, the load 23 is transferred from the warehousing conveyor 4 to the load transfer drive conveyor 11 of the elevating carriage 12.
The warehousing crane 2 received above is moved to a position corresponding to the target gravity conveyor 6, and the elevating carriage 12 is raised and lowered to be located at the warehousing level with respect to the target gravity conveyor 6. , the detector 22 is located at the loading entrance 7 of the gravity conveyor 6 for the purpose.
This corresponds to the detection target reflection plate 20 disposed in .

At this time, the load 23 is placed at the loading entrance 7 of the gravity conveyor 6, that is, at the rearmost load supporting position.
If it is not supported, the detector 22 cannot detect the detection reflector 20 when the vertically movable body 15 is in the protruding position shown by the imaginary line in FIG. In such a state that the elevating carriage 12 corresponds to the gravity conveyor 6 to be warehoused, the detector 22 detects the reflective plate 2 to be detected.
When no detection signal of 0 is output, the drive conveyor 11 on the elevating carriage 12 is driven and controlled so that the cargo 23 can be delivered onto the gravity conveyor 6 to be stored.

If the gravity conveyor 6 to be warehoused is stocked (full) up to the rearmost load supporting position, the vertically movable body 15 is moved by the rearmost load 23 as shown by the solid line in FIG. Since the lever is in the depressed state, the detector 22 detects the reflective plate 20 to be detected which has moved to the lower limit position.
In this manner, when the elevating carriage 12 corresponds to the gravity conveyor 6 to be stocked, when the detection signal of the detection target reflector 20 is output from the detector 22, the drive conveyor 11 on the elevating carriage 12 In addition to controlling the motor so that it cannot be driven,
Activate the alarm means to notify of double loading.

The cargo presence detection device of the present invention can be implemented and used as in the above embodiment, and the cargo is pushed down by the cargo carried into the cargo entrance of the gravity conveyor 6, and the cargo is tilted downward. A vertically movable body is provided, which returns to the upward movement by sliding to the top, and a detected portion (detection target reflective plate 20 of the embodiment) is provided on this vertically movable body, and a portion adjacent to the loading entrance of the rack is provided. A warehousing crane that travels in a passageway is equipped with a detection means (reflective photoelectric detector 22 of the embodiment) that detects the detected part when the vertically movable body is pressed down by a load. ), when the gravity conveyor to be warehoused is full up to the last section, or when the load transferred to the loading entrance of the gravity conveyor is tilted downward for some reason. When the cargo is stuck at the loading entrance without sliding to the
The detection means can automatically detect when the warehousing crane has stopped at a position corresponding to the gravity conveyor to be warehousing, thereby preventing accidents such as the cargo being carried in falling into the crane path. It can be controlled to prevent it.

Although the reflective photoelectric detector 22 is used in the embodiment, other detection means (preferably a non-contact type) may also be used. Of course, the detected part may be selected according to the detection type of the detection means.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the entire device, FIG. 2 is a longitudinal sectional side view of the main part showing an embodiment of the present invention, and FIG. 3 is a plan view thereof. 1... Rack, 2... Warehousing crane, 3...
Unloading crane, 6...Gravity conveyor,
7... Loading entrance, 9... Loading exit, 11... Load transfer drive conveyor, 12... Lifting carriage, 1
5...Vertically movable body, 17...Lever, 18...Roller, 19...Counterweight, 20...
Reflection plate for detection (detection part), 22... Reflective photoelectric detector (detection means), 23... Load.

Claims (1)

[Scope of utility model registration request] In a rack in which the sloped upper end of the inclined gravity conveyor is used as a loading entrance and the sloped lower end is set as a loading exit, the load carried into the loading entrance is stepped down by the load, and the load is tilted. A warehousing crane is provided with a vertically movable body that returns to the upward movement by sliding in the direction, a detected part is provided on this vertically movable body, and the warehousing crane runs in a passage adjacent to the side where the loading entrance of the rack is located. . A rack cargo presence detection device comprising a detection means for detecting the detected portion when the vertically movable body remains pressed down by a load.