JP2637190B2 - Shuttle conveyor travel control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shuttle conveyor traveling control device for uniformly controlling the storage level of a fluid object such as powder and granules in a bin.

[Conventional technology]

FIG. 2 is a diagram showing a conventional shuttle conveyor control device. In the figure, reference numeral 1 denotes an upstream conveyor which transports a fluid object 17 such as powder or granules from an upstream, and 2 denotes a control object in the present case. Shuttle conveyor, 3 is a shuttle conveyor traveling carriage, 4 is a bin for temporarily storing a fluid object 17,
5 is a conveyor drive motor for driving the shuttle conveyor 2, 6 is a traveling motor for driving the shuttle conveyor traveling vehicle 3, 7 and 8 are limit switches for detecting the stop position of the shuttle conveyor traveling vehicle 3, and 9 is a bin in the bin 4. Fluid object
17 is a level detector for detecting the level, 10 is a power breaker, 11 is a forward / reverse contactor, and 12 is a protection thermal relay.

Next, the operation will be described. Fluid objects 17 such as powders and granules transported by the upstream conveyor 1 are received by the shuttle conveyor 2 whose belt is rotating in the direction of the bin 4 by the conveyor drive motor 5 and temporarily transferred to the bin 4. To save. The stored fluid object 17 is discharged from the lower part of the bin 4 by another device at the request of the downstream equipment. The shuttle conveyor traveling carriage 3 can travel at a constant speed in both forward and reverse directions by the traveling motor 6, and the stop position detection limit switch 7 or 8 operates while the upstream conveyor 1 is operating. Repeat forward and reverse until The traveling motor 6 includes a forward / reverse contactor 11.
Is automatically controlled by the operation signal of the stop position detecting limit switch 7 or 8.

[Problems to be solved by the invention]

Since the conventional shuttle conveyor travel control device is configured as described above, since the amount of the fluid object from the upstream is not constant, the level of the fluid object in the bin is not uniform, and therefore, There was a problem that bins were not effectively used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is intended to effectively use the storage capacity of a bottle by storing the level of a fluid object in the bottle while keeping the level uniform. It is an object of the present invention to obtain a travel control device for a shuttle conveyor capable of performing the following.

[Means for solving the problem]

A shuttle conveyor traveling control device according to the present invention includes a traveling position signal from a traveling position detecting device that detects a traveling position of a shuttle conveyor traveling vehicle, and a level from a level detecting device that detects a storage level of a fluid object in a bin. The signal is input to the arithmetic unit, and the running speed of the shuttle conveyor is calculated so that the storage level in the bin becomes uniform, and the calculated output is given to the variable speed control device to control the running speed of the shuttle conveyor running cart. It is something to do.

[Action]

The shuttle conveyor travel control device according to the present invention includes:
The running position of the shuttle conveyor and the storage level near the drop position in the bin are grasped, the running speed of the shuttle conveyor is calculated based on these values, and control is performed so as to keep the storage level of the fluid objects in the bin uniform. .

(Example of the invention)

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 1 to 8, 10 and 11 are the same as or equivalent to those in FIG. Reference numeral 13 denotes a level detection device attached to, for example, the tip of the shuttle conveyor traveling cart 3 and continuously detecting the storage level near the drop position of the fluid object 17 into the bin 4 that changes with the movement of the shuttle conveyor 2. ,
14 is a traveling position detecting device such as a pulse encoder for continuously detecting the traveling position of the shuttle conveyor traveling carriage 3;
Is a computing device which receives the level signal from the level detecting device 13 and the traveling position signal from the traveling position detecting device 14 and computes the traveling speed of the shuttle conveyor 2 so that the storage level in the bin 4 becomes uniform. It is a variable speed control device such as an inverter device that continuously controls the traveling motor 6 of the shuttle conveyor traveling vehicle 3 based on the computation result of the computation device 15.

Next, the operation will be described. Fluid object in bottle 4
In order to keep the 17 levels uniform, it is desirable to move at a low speed when the level of the current position is low, and at a high speed when the level of the current position is high. The present invention focuses on this point, and converts a bin level into a level signal which is an electric signal (4 to 20 mA or 1 to 5 V) by a level detecting device 13 and a shuttle conveyor traveling vehicle by a traveling position detecting device 14. 3 is converted into a travel position signal which is an electric signal (pulse), and the arithmetic unit 15 uses these signals to convert the bin 4
The traveling speed of the shuttle conveyor traveling vehicle 3 at each position is calculated so that the storage level in the vehicle becomes uniform. The traveling speed is measured in v (m / sec), and the target value of the bin level is measured in hp (m) (the target value is automatically set higher each time the shuttle conveyor traveling truck travels) with the level detector 13. If the bin level is hd (m), for example,
By providing a relation of v = k (hd-hp), the speed of movement of the shuttle conveyor 2 is increased in a place where the bin level is high, and the supply rate of the fluid object 17 to the drop position is reduced. In places where the bin level is low, the moving speed of the shuttle conveyor 2 is reduced to increase the supply rate of the fluid object 17 to the drop position. Where k
Is a constant determined by the transport capacity and the bin capacity. By controlling the speed of the traveling motor 6 of the shuttle conveyor traveling vehicle 3 by the variable speed control device 16 based on the traveling speed v computed by the computing device 15, the vehicle can be operated while keeping the bin level uniform.

In the above embodiment, an inverter device for an AC motor is used as the variable speed control device 16 and a pulse encoder is used as the traveling position detection device 14, but other devices may be used.

In addition, a combination other than the shuttle conveyor and the bin may be used as long as the facility discharges the fluid object while moving and stores it.

〔The invention's effect〕

As described above, according to the present invention, by measuring the storage level in the bin and the traveling position of the shuttle conveyor and inputting them to the arithmetic unit, the traveling speed of the shuttle conveyor is such that the storage level in the bin becomes uniform. , And the running speed of the shuttle conveyor is controlled based on the calculation result.Therefore, when the fluid object is dispersedly supplied into the bin by the reciprocating motion of the shuttle conveyor, the vicinity of the actual drop position in the bin is It is possible to achieve a uniform storage level in the bin by controlling the local supply amount according to the storage level while monitoring the storage level one by one, and to effectively use the bin.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a shuttle conveyor travel control device according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional shuttle conveyor travel control device. 1 is an upstream conveyor, 2 is a shuttle conveyor, 3 is a shuttle conveyor traveling carriage, 4 is a bin, 5 is a conveyor drive motor, 6 is a traveling motor, 7, 8 is a stop position detection limit switch, 13 is a level detection device, 14 is a traveling position detecting device, 15 is a computing device, 16 is a variable speed control device, and 17 is a fluid object. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A shuttle conveyor travel control device for controlling a shuttle conveyor for storing fluid objects such as powders, granules and the like in a bin to reciprocate on a shuttle conveyor travel vehicle, wherein the shuttle conveyor travel vehicle travels. A traveling position detecting device for detecting a position, a level detecting device for continuously detecting a storage level near a drop position of the flowable object into the bin, which changes with movement of the shuttle conveyor, and the traveling position detection An arithmetic unit for calculating the traveling speed of the shuttle conveyor so that the storage level in the bin becomes uniform by inputting the travel position signal from the device and the level signal from the level detection device, and the arithmetic output of the arithmetic device And a variable speed control device for controlling the traveling speed of the shuttle conveyor traveling carriage by means of Torukonbeya travel control device.