JPH068743B2 - Mobile weighing and conveying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a transfer for measuring while transporting powdered materials such as limestone, coal, ore stored in a storage tank, granular materials, lumps and mixtures thereof. A mold weighing and conveying device.

b. Conventional Technology Conventionally, when a stored material stored in a storage tank is transported to a predetermined place, as a method for measuring the amount of stored material taken out, for example, there is a method shown in FIG. 5 or FIG.

That is, in the storage tank 50, a plurality of hoppers 51 are arranged in a state of being aligned vertically and horizontally, and the outlets 52 of the plurality of hoppers 51 arranged in the horizontal direction are directly arranged.
Correspondingly, a conveyor belt 53 is installed below each of the series of outlets 52 arranged in the lateral direction. As shown in FIG. 5, a weighing machine 54 is attached to the tip of each conveyor belt 53. Installed or, as shown in FIG. 6, a weighing machine is attached to the tip of the transfer belt 55 in which the transfer belt 53 is further concentrated.
54 is installed and weighs.

Further, when the stored material 61 in the storage tank 60 is transported by using the plow type discharging device as shown in FIGS. 7 and 8, the weighing is performed by the following method. That is, the storage tank 61 scraped by the plow-type feeder 63 attached to the traveling movable carriage 62 is discharged via the hopper 65 onto the conveyor belt 64 arranged below the carriage 62, and then, It is adapted to be transported to a predetermined place by the transport belt 64. Further, a weighing machine (not shown) is provided at the tip of the conveyor belt 64, the storage tank 60, and the like, and the weighing machine measures the discharge amount and the level of the stored material 61 in the storage tank 60. .

c. Problems to be Solved by the Invention However, the following problems are pointed out in the method of measuring the stored material in the storage tank, which is the transported object, by the weighing machine installed in the transportation device as described above. There is. That is, in the conventional example shown in FIG. 5 and FIG. 6, since the taken-out amount is measured collectively in a series of transportation systems, the taken-out amount from the take-out port 52 of each hopper 51 is detected. Can not do it. Therefore, there is a problem in that it is not possible to grasp the inventory amount of the hoppers 51 associated with the respective outlets 52, and consequently the inventory amount of the storage tank 50 and the fluctuation state.

Further, since the outlet 52 of the storage tank 50 and the weighing machine are installed at different locations, it may be difficult to adjust the variation of the amount taken out, which may cause problems such as excess or deficiency of the amount taken out. Therefore, in order to perform a fixed amount supply or a ratio mixing to a dryer, a powder machine, etc., it is necessary to install another storage hopper and a constant amount supply device on the side of the machine used, which is a disadvantage of increasing the equipment cost. .

Although it is possible to provide a weighing machine at each outlet 52 in order to grasp the amount taken out from each individual outlet 52, the inconvenience that the facility cost increases as in the above case occurs.

On the other hand, even in the conventional example shown in FIGS. 7 and 8, there is a considerable time difference between the discharge of the plow-type feeder 63 and the weighing by the weighing machine. Therefore, if there is a large fluctuation in the discharge amount of the feeder 63, the moving speed of the carriage 62 and the feeder 63
The adjustment of the number of revolutions of the conveyor belt 64 or the traveling speed of the conveyor belt 64 is remarkably delayed, and as a result, problems such as occurrence of troubles in the transportation system of the conveyor belt 64 and excess and deficiency of the discharge amount occur.

Further, the level of the stored material 61 in the storage tank 60 changes depending on the state of loading and the case of loading during discharging work, etc., and it is difficult to accurately detect the level, so the discharge amount should be adjusted to a constant level. Was impossible.

The present invention has been made in view of the above situation, and an object thereof is to provide a mobile weighing and conveying apparatus capable of solving the various problems described above.

d. Means for Solving the Problems In order to solve the problems of the above-mentioned conventional technology, in the present invention, a conveyor belt is installed corresponding to a plurality of outlets for taking out the stored items in the storage tank. In the moving type metering and conveying device, the carriage is arranged so as to be movable along the conveyor belt, and a plurality of rollers provided on the carriage arranges the upper traveling portion of the conveyor belt located below the outlet. A part of the measuring device and the quantitative adjusting device are provided on the trolley side while the part is lifted to the intake port side, and the quantitative adjusting device is arranged so as to be interposed between the extracting port and the measuring means. It is configured such that the stored items from the above are transported by being dropped onto the lifted transport belt via the quantitative adjustment device, and the stored items on the transport belt can be weighed during the transport by the weighing means. There is.

e. Examples Hereinafter, the present invention will be described in detail based on illustrated examples.

FIG. 1 shows a first embodiment of the present invention. In FIG. 1, reference numeral 1 is a storage tank similar to the conventional one, and a plurality of hoppers 2 are arranged in this storage tank 1 in a state of being aligned vertically and horizontally. In the lower part of the hopper 2, a plurality of outlets 4 for taking out the stored items 3 in the storage tank 1 are provided, respectively. Correspondingly, a conveyor belt 6 is installed below the outlets 4 arranged in a straight line in the lateral direction, one end of which is connected to another conveyor belt or the like not shown. It continues to the use site of the stored material 3 as the transported object.

On the other hand, rails 7 are laid along both sides of the conveyor belt 6, and a carriage 8 that is capable of traveling is mounted on the pair of rails 7. The dolly 8 is adapted to be driven by a dolly driving device (not shown) arranged on the dolly.

The carriage 8 is provided with a mounting table 9, on which a plurality of rollers 10 are rotatably arranged at regular intervals in the longitudinal direction. A part of the running portion 6a is adapted to be lifted to the four outlets of the storage tank 1.

In addition, a measuring means 11 is provided between the rollers 10 at substantially the center of the mounting table 9, and the conveyor belt 6 is lifted.
The amount of the stored goods 3 conveyed above is measured and detected by the measuring means 11. This weighing means 11
Consists of a sensor device 12 and a weighing device 13.
12 is a sensor for detecting the weight of the stored article 3 and the conveyor belt 6
And a sensor for detecting the traveling speed of the vehicle.
The detection signal from the sensor device 12 is input to the weighing device 13.

Further, at one end of the mounting table 9 of the carriage 8, a moving device 16 as a quantitative adjusting device in which a screw conveyor 15 is rotatably housed is arranged. The transfer device 16 is arranged so as to be interposed between the take-out port 4 and the measuring means 11, and is not limited to a screw conveyor, and may be a rotary feeder, a belt conveyor or the like as long as the rotation can be controlled.
The transfer device 16 is provided with a receiving chute 17 at one upper end and a discharging chute 18 at the other lower end so that the lifted conveyor belt 6 is located below the discharging chute 18. It is configured.

Further, a speed control device 19 is fixedly installed at an appropriate position of the mounting table 9, for example, one end lower part thereof, and the rotation speed of the screw conveyor 15 in the transfer device 16 is controlled by this control device 19. .

The operation of the mobile weighing and conveying device having the above-mentioned configuration is as follows.

First, the carriage 8 is moved along the rail 7 to connect the receiving chute 17 to an arbitrary take-out port 4. Next, when the outlet 4 is opened by an appropriate means, the stored matter 3 in the storage tank 1 is discharged to the outside and taken out. The removed storage 3 is
It is loaded into the transfer device 16 via the receiving chute 17 and transferred to the discharging chute 18 by the screw conveyor 15. The transferred stored material 3 falls through the discharging chute 18 onto one end of the conveyor belt 6 lifted by the roller 10, and is conveyed rightward in the figure by the conveyor belt 6. Then, the transported stored material 3 is weighed by the weighing means 11 and then directly transported to the next transportation system by the transportation belt 6.

At this time, in the weighing means 11, the weight detection signal of the stored material 3 and the traveling speed detection signal of the conveyor belt 6 detected by the sensor device 12 are sent to the weighing device 13 and are calculated to calculate the transportation amount. It Then, based on the calculation result, the amount of the stored material 3 taken out at each time is grasped. Further, the calculation result in the weighing device 13 is fed back to the control device 19 as a weighing signal, and the control device 19 automatically increases or decreases the speed of the screw conveyor 15 of the transfer device 16 to a preset take-out amount. Quantitative control of the stock 3 is performed. In some cases, the traveling speed of the conveyor belt 6 is also automatically controlled.

According to this embodiment, since it is possible to convey a fixed amount of the stored material 3, it is possible to omit a storage hopper and a fixed amount supply device that are installed along with a dryer, a crusher, etc. The amount can be reduced, and the ratio mixture control can be easily performed.

2 to 4 show a second embodiment of the present invention, in which 20 is a storage tank similar to the conventional one, and this storage tank 20 is extended in the direction perpendicular to the paper surface in FIG. . At the center of the bottom of the storage tank 20, an inclined bottom wall 21 having a substantially inverted V-shaped cross section is provided along the longitudinal direction of the storage tank 20, and the inclined bottom wall 21 is provided.
A pair of discharge ports 22 that are continuous are formed on both sides of the.

A bottom plate 23 is disposed below the discharge port 22, and the holdings 24 in the storage tank 20 normally form an angle of repose between the lower end of the inclined bottom wall 21 and the bottom plate 23.

On the other hand, below the bottom plate 23, a pair of support frames 25 are erected,
Rails 26 are laid on the upper ends of the pair of support frames 25, respectively. A carriage 27 is placed on the rail 26, and the carriage 27 is driven by a carriage drive motor 28 arranged on the carriage 27 as shown in FIG.

A pedestal 29 is erected on the carriage 27, and an upper end portion of the pedestal 29 projects inside the inclined bottom wall 21 through a long hole 30 formed along the center line of the bottom plate 23. A plow-type feeder 31 of a quantitative adjustment device that rotates along the upper surface of the bottom plate 23 is attached to the gantry 29, and the stored material scraped by the feeder 31 is stored.
The 24 is continuously loaded into the hopper 32 attached to the carriage 27.

A frame 33 is integrally attached to the lower surface of the carriage 27 as shown in FIGS. 2 and 3. This frame
A plurality of rollers 34 are rotatably arranged at a constant interval in the longitudinal direction on the 33, and a part of the upper traveling portion 35a of the conveyor belt 35 is lifted to the discharge port 22 side of the storage tank 20 by these rollers 34. It is supposed to be.

One end of the conveyor belt 35 that has been lifted is attached to the hopper 32.
A measuring means 36 is located below the roller 34, near the other end and between the rollers 34, and the conveying amount of the stored goods 24 conveyed on the belt 35 is measured and detected by the measuring means 36. It has become so.

The weighing means 36 includes a sensor device 37 and a weighing device 38,
The sensor device 37 includes a sensor that detects the weight of the stored material 24 and a sensor that detects the traveling speed of the transport belt 35. The detection signal from the sensor device 37 is input to the weighing device 38.

A control device 39 is attached to the weighing device 38, and a weighing signal of the weighing device 38 is input to the control device 39. Then, based on the weighing signal, the feeder 31
The rotation speed of the feeder 31 is controlled by the control device 39 so that the discharge amount of the feeder 31 is constant, and the traveling speed of the conveyor belt 35 is also automatically controlled so as to correspond to the discharge amount of the feeder 31. ing. Therefore, feeder 31
Are arranged to be interposed between the outlet 22 and the measuring means 36.

The operation of the mobile weighing and conveying device having the above-mentioned configuration is as follows.

When the carriage 27 is moved along the rails 26 while rotating the feeder 31, the stored items 24 in the storage tank 20 are continuously discharged to the outside. That is, when the feeder 31 is rotated, the stored material 24 forming an angle of repose on the bottom plate 23 is scraped off by the feeder 31, and the scraped stored material 24 is stored in the hopper 32.
It is dropped into one end of the conveyor belt 35 that has been thrown in and is lifted by the roller 34.

The dropped storage 24 is conveyed to the right in FIG. 2 by the lifted conveyor belt 35, weighed by the weighing means 36, and then transferred to the unlifted portion of the conveyor belt 35 and conveyed as it is. It is conveyed to the next transportation system by the belt 35.

At this time, in the weighing means 36, the weight detection signal of the storage tank 24 and the traveling speed detection signal of the transport belt 35 detected by the sensor device 37 are sent to the weighing device 38 and calculated to calculate the transport amount. It Then, based on this calculation result, the discharge amount of the stored material 24 at each time is grasped.

Further, if necessary, the above calculation result is fed back to the control device 39 as a weighing signal, and the control device 39 automatically adjusts the amount of rotation of the feeder 31 to a preset discharge amount for quantitative control. Is done. In some cases, the traveling speed of the conveyor belt 35 is also automatically controlled.

According to this embodiment, the same effect as that of the above embodiment can be obtained even when applied to the plow discharge device.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications and changes can be made based on the technical idea of the present invention.

e. Effects of the Invention As described above, the movable weighing and conveying apparatus according to the present invention lifts a part of the upper traveling portion of the conveyor belt by means of the rollers provided on the carriage that is capable of traveling and measures the weight toward the carriage side. Means and a quantitative adjustment device are provided, the quantitative adjustment device is arranged to intervene between the outlet of the storage tank and the measuring means, and the storage from the outlet on the storage tank side is lifted via the quantitative adjustment device. Since it is configured such that it can be dropped onto the transport belt and transported, and the storage material on the transport belt can be weighed during the transportation by the weighing means, it is necessary to provide a fixed amount feeder at each outlet of the storage tank. The removal amount of the storage tank from the storage tank can be immediately detected, the removal amount can be adjusted quickly, accurately and easily, and the inventory management of the storage can be properly performed.
It is possible to reduce the equipment cost and control the ratio mixture of stored materials. Further, according to the present invention, since the stored material is conveyed to the measuring means by using a part of the conveyor belt, it is not necessary to separately provide a measuring conveyor, and the height of the storage tank, basement, etc. is low. Therefore, the facility cost can be significantly reduced.

[Brief description of drawings]

1 to 4 show a first embodiment and a second embodiment of the movable weighing and conveying apparatus according to the present invention, and FIGS. 1 and 2 are conceptual side views of the respective embodiments. , Fig. 3 is the second
FIG. 4 is a vertical sectional view of the drawing, and FIG. 4 is a plan view of FIG. FIGS. 5 to 8 show a conventional weighing means. FIGS. 5 and 6 are conceptual plan views of respective conventional examples, and FIG. 7 is a conceptual side view of other conventional examples. , FIG. 8 is a longitudinal sectional view of FIG. 7. 1, 20 ... Storage tank, 3, 24 ... Stored goods, 4 ... Take-out port, 6, 35 ... Conveying belt, 7, 26 ... Rail, 8, 27 ... Cart, 10, 34 ... Roller, 11, 36 ... Measuring means , 16 ... Transfer device, 18 ... Discharge chute, 22 ... Discharge port, 29 ... Stand, 31 ... Feeder, 32 ... Hopper.

Claims (1)

[Claims] 1. A mobile metering and conveying apparatus in which a conveyor belt is installed in correspondence with a plurality of outlets for taking out the stored items in a storage tank, and a trolley capable of traveling along the conveyor belt. And a part of the upper traveling portion of the conveyor belt located below the outlet is lifted to the outlet by a plurality of rollers provided on the carriage,
The trolley side is provided with a weighing means and a quantitative adjustment device, the quantitative adjustment device is arranged so as to be interposed between the outlet and the weighing means, and the stored matter from the outlet is passed through the quantitative adjustment device to A moving type weighing and conveying device characterized in that it is configured so as to be dropped onto a raised conveying belt and conveyed, and the stored items on the conveying belt can be weighed during the conveyance by the measuring means.