JPS61290326A - Mobile type weighing/conveying apparatus - Google Patents

Abstract

PURPOSE:To detect the level in a storage tank accurately while enabling constant adjustment of discharge, by lifting a conveying belt located below the take-off port with a plurality of rollers provided on a truck to weigh a stock dropping on the belt while being conveyed. CONSTITUTION:A truck 8 is travelled along a rail 7 and a receiving chute 14 is set to a desired withdrawing device 5. Then, as a take-off port 4 is opened by the operation of the with-drawing device 5, a stock 3 in the storage tank 1 is discharged and withdrawn. The stock 3 withdrawn drops at one end of a conveying belt 6 lifted with a roller 10 through the receiving chute 14 to be conveyed to the right with the belt 6. Then, the stock 3 conveyed is weighed by a weighing means 11 and further, conveyed to the next transport system with the belt 6. Thus, the weighing of the take-off during the conveyance enables accurate detection of the level in the storage tank 1.

Description

[Detailed description of the invention] a. Industrial application field The present invention is a limestone 1 coal stored in a storage tank.

This invention relates to a mobile weighing and conveying device that weighs while conveying 8 grains of powder such as ore, lumps, and mixtures thereof.

b. Prior Art Conventionally, when the stored material stored in a storage tank is transported to a predetermined location, there is a method shown in FIG. 6 or 7, for example, for measuring the amount of stored material to be taken out.

That is, a plurality of hoppers 51 are arranged in the storage tank 50 in a state in which they are arranged vertically and horizontally, and the respective outlets 52 of the plurality of hoppers 51 arranged in the horizontal direction are arranged in a straight line. and a series of outlets 52 arranged in the horizontal direction.
Below the transport healds 53 are installed correspondingly, and as shown in FIG. 6, a weighing machine 54 is installed at the tip of each transport heald 53, or as shown in FIG.
A weighing machine 54 is installed at the tip of the conveying belt 55 on which the conveying healds 53 are further concentrated to perform weighing.

Furthermore, when transporting the stored material 61 in the storage tank 60 using a plow-type discharge device as shown in FIGS. 8 and 9,
Weighing is done in the following way.

That is, stored material 61 scraped out by a plow-type feeder 63 attached to a movable trolley 62 is discharged via a hopper 65 onto a conveyor belt 64 disposed below the trolley 62, and then , and is transported to a predetermined location by a transport belt 64. A weighing machine (not shown) is provided at the tip of the conveyor belt 64, the storage tank 60, etc. This weighing machine detects the discharge amount and the level of the stored material 61 in the storage tank 60 and performs measurement.

C1 Problems to be Solved by the Invention However, the following problems have been pointed out in the method of weighing the stored material in the storage tank, which is the material to be transported, using a weighing machine installed in the above-mentioned transport device, etc. There is. In other words, in the conventional example shown in FIGS. 6 and 7, the amount taken out is measured all at once in a series of transportation systems, so the amount taken out from the outlet 52 of each hopper 51 is detected. Can not do it. Therefore, there was a problem that the amount of inventory in the hopper 51 associated with each outlet 52, and furthermore, the amount of inventory in the storage tank 50 and its fluctuation status could not be grasped.

In addition, since the outlet 52 of the storage tank 50 and the weighing machine are installed far apart, the adjustment response to fluctuations in the amount taken out is delayed.
There was a risk of problems such as excess or deficiency in the amount taken out. Therefore, in order to perform quantitative supply or ratio mixing to dryers, powder machines, etc., it is necessary to install an additional storage hopper and quantitative feeder on the machine side, which is inconvenient and increases equipment costs. Ta.

Although it is possible to provide a weighing machine at each outlet 52 in order to determine the amount taken out from each outlet 52, this causes the inconvenience of increased equipment costs as described above.

On the other hand, even in the conventional examples shown in FIGS. 8 and 9, a considerable time difference occurs between the discharge of the plow-type feeder 63 and the weighing by the weighing machine. For this reason, if there is a large change in the discharge amount of the feeder 63, there will be a significant delay in adjusting the moving speed of the trolley 62, the rotation speed of the feeder 63, or the running speed of the conveyor belt 64, and as a result, the conveyor heald will 64 and other transportation systems, and problems such as excess and deficiency of emissions were occurring.

In addition, the level of the stored material 61 in the storage tank 60 changes depending on the state of charging and when charging during discharge work, etc., and it is difficult to accurately detect the level, and it is difficult to adjust the discharge amount to a constant level. was impossible.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a mobile weighing and conveying device that can solve the various problems described above.

d. Means for Solving the Problems In order to solve the problems of the prior art described above, in the present invention, a conveyor belt is installed corresponding to the outlet for taking out stored items in the storage tank, and A cart that can run and move along the conveyor belt is disposed, and a part of the upper running portion of the conveyor belt located below the outlet is moved toward the outlet by a plurality of rollers provided on the truck. It is configured such that the stored items from the outlet, which are lifted and dropped onto the lifted conveyor belt, can be weighed during conveyance by a measuring means disposed on the trolley.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows a first embodiment of the present invention, and in the figure, ``■'' is a storage tank similar to the conventional one, and a plurality of hoppers 2 are arranged in this storage tank 1 in a vertical and horizontal alignment. At the bottom of the hopper 2, there are provided outlet ports 4 for taking out the stored material 3 in the storage tank 1, and these outlet ports 4 are opened and closed by a mounting device 5 attached to the lower end of the outlet port 4. ing. A transport heald 6 is installed below the take-out ports 4 arranged in a straight line in the horizontal direction, and one end of the transport heald 6 is connected to another transport belt, etc. (not shown). It is continuous to the site where the stored material 3, which is the transported material, is used.

On the other hand, rails 7 are laid along both sides of the conveyor belt 6, and a movable cart 8 is mounted on the pair of rails 7.

The truck 8 is driven by a truck driving device (not shown) disposed thereon.

The cart 8 is equipped 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 lifted toward the outlet 4 side of the storage tank 1.

Further, a measuring means 11 is disposed approximately in the center of the mounting table 9 between the rollers 10, and the conveyance amount of the stored articles 3 conveyed on the lifted conveyor belt 6 is determined by the measuring means 11.
It is designed to be measured and detected by The weighing means 11 includes a sensor device 12 and a weighing device 13, and the sensor device 12 includes a sensor for detecting the weight of the stored items 3 and a sensor for detecting the running speed of the transport heald 6, respectively.

A detection signal from the sensor device 12 is input to a measuring device 13.

Furthermore, a chute 14 is provided at one end of the mounting table 9 to receive and take the stored items 3, and the lifted conveyor belt 6 is positioned below the chute 14. It is configured.

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

First, the cart 8 is moved along the rail 7, and the receiver connects the chute 14 to an arbitrary take-out device 5.

Next, when the take-out device 5 is operated to open the take-out port 4, the stored material 3 in the storage tank 1 is discharged to the outside and taken out.

The taken-out stored article 3 falls through the shoe eyelet 4 onto one end of the conveyor belt 6 lifted by the roller 10, and is conveyed by the conveyor belt 6 to the right in the figure. The transported stored items 3 are weighed by the weighing means 11 and then transported as they are to the next transport system by the transport belt 6.

At this time, in the weighing means 11, the stored object 30 weight detection signal detected by the sensor device 12 and the running speed detection signal of the conveyor belt 6 are sent to the weighing device 13, and are calculated to calculate the conveyance amount. . Based on this calculation result, the amount of the stored material 3 to be taken out at any given time is determined.

According to this embodiment, by appropriately operating the take-out device 5 as necessary, fluctuations in the amount of the stored material 3 taken out can be significantly reduced compared to the conventional method.

Further, since there is no need to separately provide a weighing conveyor for conveying the stored items 3 to the weighing means 11, the structure of the apparatus becomes simple.

FIG. 2 shows a second embodiment of the present invention. In the figure, a transfer device 16 in which a screw conveyor 15 is rotatably housed is disposed at one end of a mounting table 9 of a cart 8. . The transfer device 16 is not limited to a screw conveyor, but may be a rotary feeder, a belt conveyor, etc. as long as the rotation can be controlled. A chute 17 is provided at the top of one end of the transfer device 16, and a discharge chute 18 is provided at the bottom of the other end so that the lifted conveyor belt 6 is positioned below the discharge chute 18. It is composed of

Also, the above iI! A speed control device 19 is fixedly installed at an appropriate position of the I2 stand 9, for example, at the top of one end, and this control device 1
9 controls the rotational speed of the screw conveyor 15 within the transfer device 16. The other configurations are the same as in the first embodiment.

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

First, the cart 8 is moved along the rail 7, and the receiver connects the chute 17 to an arbitrary outlet 4. Next, when the outlet 4 is opened by an appropriate means, the stored material 3 in the storage tank 1 is removed.
is discharged to the outside and taken out.

The removed stored material 3 is placed into the transfer device 16 via the chute 17 and transferred to the discharge chute 18 by the screw conveyor 15. Transferred storage 3
falls onto one end of the conveyor belt 6 lifted by the roller 10 via the discharge chute 18, and is conveyed by the conveyor belt 6 to the right in the figure. The subsequent operation is performed in the same manner as in the first embodiment, and the calculation result in the weighing bag W13 is sent to the control device 19 as a weighing signal.
The control device 19 automatically increases or decreases the speed of the screw conveyor 15 of the transfer device 16 to a preset takeout amount, thereby controlling the quantity of stored material 3. Note that, depending on the case, the traveling speed of the conveyor belt 6 is also automatically controlled.

According to this embodiment, it is possible to transport a fixed amount of stored material 3, so the storage hopper and fixed amount feeder installed in conjunction with a dryer, crusher, etc. can be omitted, and the equipment cost can be significantly reduced. In addition to being able to achieve a reduction, ratio mixing control can also be performed easily.

3 to 5 show a third embodiment of the present invention, and in the figures, 20 is a storage tank similar to the conventional one, and this storage tank 20
in FIG. 4 extends in a direction perpendicular to the plane of the paper. Storage tank 2
At the center of the bottom inside 0, there is an inclined bottom wall 21 with a roughly inverted V-shaped cross section.
are arranged along the longitudinal direction of the storage tank 20, and a pair of continuous discharge ports 22 are formed on both sides of the inclined bottom wall 21.

A bottom plate 23 is disposed below the discharge port 22, and the stored material 24 in the storage tank 20 is normally stored between the lower end of the inclined bottom wall 21 and the bottom plate 23.
An angle of repose is formed between the two.

On the other hand, a pair of support frames 25 are erected below the bottom plate 23, and rails 26 are installed at the upper ends of the pair of support frames 25, respectively. And on the rail 26 there is a trolley 2
7 is placed on it, and this trolley 27 is as shown in FIG.
It is driven by a truck drive motor 28 disposed on the truck 27.

A pedestal 29 is erected on the cart 27, and the upper end of the pedestal 29 projects into the inside of the inclined bottom wall 21 through a long hole 30 formed along the center line of the bottom plate 23. A plow type feeder 3 that rotates along the upper surface of the bottom plate 23 is mounted on the pedestal 29.
1 is attached to the feeder 31, and the stored material 24 scraped out by this feeder 31 is continuously thrown into a hopper 32 attached to a cart 27.

Further, a frame 33 is integrally attached to the lower surface of the truck 27, as shown in FIGS. 3 and 4.

A plurality of rollers 34 are rotatably disposed on the frame 33 at regular intervals in the longitudinal direction.
4, a part of the upper running portion 35a of the conveyor belt 35 is lifted toward the discharge port 22 side of the storage tank 20.

One end of the lifted conveyor belt 35 is located below the hopper 32, and a measuring means 36 is disposed near the other end and between the rollers 34, and a measuring means 36 is disposed near the other end to measure the stored items conveyed on the belt 35. The conveyed amount of 24 is measured, detected, and outputted by this measuring means 36.

The weighing means 36 includes a sensor device 37 and a weighing device 38, and the sensor device 37 includes a sensor for detecting the weight of the stored items 24 and a sensor for detecting the running speed of the conveyor belt 35, respectively. A detection signal from the sensor device 37 is input to a measuring device 38.

Further, a control device 39 is attached to the weighing device 38, and a weighing signal from the weighing device 38 is input to the control device 39. Based on the weighing signal, 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 conveying heald 35 is also adjusted to the I output amount of the feeder 31. It is configured to be automatically controlled accordingly.

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

When the cart 27 is moved along the rails 26 while rotating the feeder 31, the stored material 24 in the storage tank 20 is continuously discharged to the outside. That is, when the feeder 31 is rotated, the stored material 2 forming an angle of repose on the bottom plate 23
4 is scraped off by the feeder 31, and this scraped storage material 24 is thrown into a hopper 32 and falls onto one end of a conveyor belt 35 lifted by a roller 34.

The fallen stored items 24 are transported to the lifted conveyor belt 3
5 to the right in FIG.
transported to the next transportation system.

At this time, in the weighing means 36, the weight detection signal of the stored object 24 detected by the sensor device 37 and the running speed detection signal of the conveyor belt 35 are sent to the weighing device 38, and are calculated to calculate the conveyance amount. Ru. Based on this calculation result, the discharge amount of the stored material 24 at any given time is grasped.

In addition, if necessary, the above calculation result is fed back to the control device 39 as a measurement signal, and the control device 39 automatically increases or decreases the rotation speed of the feeder 31 to a preset discharge amount to control the quantitative control. will be held. Note that, depending on the case, the traveling speed of the transport heald 35 is also automatically controlled.

According to this embodiment, even when applied to a plow type discharge device, the same effects as in the above embodiment can be obtained.

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.

e9 Effects of the Invention As described above, the mobile weighing and conveying device according to the present invention lifts a part of the upper running portion of the conveying belt with the rollers provided on the movable cart, and stores the stored material taken out from the storage tank. Since the object is dropped onto the lifted conveyor belt and the amount taken out can be measured on the lifted conveyor belt, the amount of the object taken out from the storage tank can be immediately detected. The amount to be taken out can be adjusted quickly, accurately, and easily, and inventory management of stored items can be performed accurately. Furthermore, since the present invention uses a part of the conveyor belt to convey stored items to the weighing means, there is no need to separately provide a weighing conveyor for this purpose, and storage tanks, basements, etc. can be constructed with low heights. Because it is possible, equipment costs can be significantly reduced.

[Brief explanation of the drawing]

1 to 5 show first to third embodiments of the mobile weighing and conveying device according to the present invention, and FIGS. 1 to 3 are conceptual side views of each embodiment. , FIG. 4 is a longitudinal sectional view of FIG. 3, and FIG. 5 is a plan view of FIG. 3. 6 to 9 show conventional measuring means, FIGS. 6 and 7 are conceptual plan views of each conventional example, and FIG. 8 is a conceptual side view of another conventional example. , FIG. 9 is a longitudinal sectional view of FIG. 8. 1.20... Storage tank, 3.24... Storage,
4...Takeout port, 6.35...Transportation heald, 8.27...Dolly, 10.34...
・Roller, 11, 36...Measuring means, 22...
Vent. Figure 1〆Figure 2〆

Claims (1)

[Claims] A conveyor belt is installed corresponding to the outlet for taking out the stored items in the storage tank, and a cart that can run and move along the conveyor belt is arranged, and a plurality of rollers provided on the truck A part of the upper running part of the conveyor belt located below the outlet is lifted toward the outlet, and the stored items from the outlet, which are dropped onto the lifted conveyor belt, are placed on the trolley. 1. A mobile weighing and conveying device, characterized in that it is configured to be capable of weighing during conveyance using a measuring means provided therein.