JP2017145068A - Deviation preventing device of conveyor belt in belt conveyor and deviation preventing method of conveyor belt using the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which prevents a deviation of a conveyor belt due to non-uniform placement of transported articles for a long period of time, increases an operation rate of a belt conveyor, and achieves stable operation, and a method.SOLUTION: A deviation preventing device of a conveyor belt comprises a connection chute 3 for forming a passage to make a transported article discharged from an outlet side of an upstream side belt conveyor 1 fall and to introduce to a downstream side belt conveyor. A flow regulating plate 4 for changing a falling trajectory by hitting the transported article immediately after the discharge is provided above the connection chute 3, and a pair of guiding plates 5a, 5b which are arranged in a width direction of a conveyor belt of the downstream side belt conveyor 2 and guide the transported article whose falling trajectory has been changed onto the conveyor belt of the downstream side belt conveyor 2 through an opening 6 formed between the guiding plates are provided below the connection chute.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a belt conveyor used for conveying iron-making raw materials such as ore, coal, sintered raw material, coke, lime, etc., and a deviation prevention device for the conveyor belt and a deviation of the conveyor belt using the device. It relates to a prevention method.

  Ironmaking raw materials (granular lump) such as ore and coal used in the steelmaking field are usually transported by ship. Then, the landing is performed by equipment such as an unloader, and the landed steelmaking raw material is conveyed to the raw material yard by connecting a plurality of belt conveyors.

  As a method of conveying the steelmaking raw material by the belt conveyor, the conveying direction of the belt conveyor arranged on the upstream side is matched with the conveying direction of the belt conveyor arranged on the downstream side, and from the exit side of the belt conveyor arranged on the upstream side The method of dropping the discharged conveyed product onto the belt conveyor arranged on the downstream side intersects the conveyance direction of the belt conveyor arranged on the upstream side with the conveyance direction of the belt conveyor arranged on the downstream side, and on the upstream side There is a system in which a conveyed product discharged from the outlet side of the arranged belt conveyor is dropped and conveyed to a belt conveyor arranged on the downstream side.

  In particular, the method of crossing the conveying direction of the belt conveyor can be used by arranging a plurality of belt conveyors arranged on the downstream side in parallel, and the exit position of the belt conveyor arranged on the upstream side can be used, By appropriately adjusting to any one of the belt conveyors arranged on the downstream side, it is possible to efficiently transport different types of transported objects, which is an extremely useful transport method.

  By the way, in a belt conveyor to which this type of conveyance system is applied, there is a problem that a deviation that causes meandering of the conveyor belt occurs because the conveyance objects are likely to be unevenly distributed in the width direction of the belt conveyor arranged on the downstream side. doing.

  As a prior art regarding this point, for example, Patent Document 1 discloses, as an automatic meandering adjustment system for a belt conveyor, a means for detecting a positional deviation in the width direction of the belt of the belt conveyor, and a stacking position of a conveyed product in the width direction of the belt. There is proposed a rectifying plate that adjusts the angle, a rectifying plate driving device, and a control device that corrects the positional deviation of the belt. Further, in Patent Document 2, only the meandering detection of the downstream belt conveyor is performed when the dropped conveyance object from the upstream belt conveyor is received by the drop position adjusting plate and guided to a predetermined dropping position on the downstream belt conveyor. Not only that, but also the deviation angle is detected and the attitude of the drop position adjusting plate is controlled based on the detected signals. Position adjustment plate provided, rotation angle detector for detecting the rotation angle of the riding position adjustment plate, rotation means for the riding position adjustment plate, and offset for detecting the left and right offset of the downstream conveyor belt There has been proposed a belt conveyor offset correcting device including a detector and a controller that drives a rotating means by a detection signal from the offset detector and a detection signal from the rotation angle detector.

JP 2002-128252 A JP-A-8-143135 Japanese Utility Model Publication No. 3-66915

  The technologies proposed in the above documents change the fall trajectory by colliding the transported material released from the upstream side of the belt conveyor with the flow straightening plate, drop position adjustment plate or riding position adjustment plate, etc. According to this, it was said that the meandering and deviation of the conveyor belt can be adjusted. However, in the long-term use of the belt conveyor, it is inevitable that the transported object adheres to and accumulates on the current plate, drop position adjustment plate, riding position adjustment plate, etc., and it is difficult to adjust the deviation of the conveyor belt and meandering. As a result, there is still room for improvement.

  An object of the present invention is to propose a conveyor belt shift prevention device and a conveyor belt shift prevention method using the device, which can prevent the conveyor belt shift due to the uneven accumulation of conveyed objects over a long period of time. .

  The present invention is derived from the uneven accumulation of the transported material disposed between the upstream belt conveyor and the downstream belt conveyor positioned below the upstream belt conveyor and discharged from the outlet side of the upstream belt conveyor. An apparatus for preventing the deviation of the conveyor belt of the downstream belt conveyor, wherein the conveyed product discharged from the outlet side of the upstream belt conveyor is transferred onto the conveyor belt of the downstream belt conveyor. It has a connecting chute for forming a route for dropping and guiding, and the connecting chute has a rectifying plate at its upper part for changing the trajectory of the dropped object by colliding with a transported object immediately after discharge, and at its lower part. Is arranged along the width direction of the conveyor belt of the downstream belt conveyor, and the transported object whose fall trajectory is changed through the opening formed between the downstream belt conveyors A prevention device deviation of the conveyor belt in the belt conveyor, characterized in that it comprises a pair of guide plates for guiding the conveyor of the conveyor belt.

In the deviation prevention device for the conveyor belt in the belt conveyor of the present invention,
1) The rectifying plate includes a main body part that is pivotably held via a pivot, a drive mechanism that enables the pivot angle to be changed by turning the main body part about the pivot, The main body part has a drive mechanism and a moving mechanism that can move forward and backward in the direction of approaching and separating from the upstream belt conveyor, and the pair of guide plates can change the guide angle, respectively, and the conveyor of the downstream belt conveyor Having a drive mechanism capable of moving forward and backward along the width direction of the belt;
2) The connecting chute includes an upper chute on which a baffle plate is arranged, a lower chute on which the guide plate is arranged, and an intermediate chute that is detachably connected to the upper chute and the lower chute, The plate includes a ceramic liner on at least an outer surface on which the conveyed object collides, and the guide plate includes a ceramic liner on at least the guide surface of the conveyed object;
3) The downstream belt conveyor has a camera for monitoring a deviation state of the conveyor belt of the downstream belt conveyor on each of the upstream side and the downstream side across the connecting chute,
4) The flow straightening plate and the guide plate have a washing nozzle for washing the outer surface thereof,
Is preferable as a specific means for solving the problems of the present invention.

  Furthermore, in the present invention, in order to prevent the deviation of the conveyor belt of the downstream belt conveyor using the conveyor belt deviation prevention device having the above-described configuration, the conveyor belt is discharged and fed from the outlet side of the upstream belt conveyor. Immediately after discharge, the transported object collides with the current plate to change the fall trajectory of the transported object, while the transported object whose fall trajectory is changed passes through the front opening formed between the pair of guide plates. This is a method for preventing the deviation of the conveyor belt in the belt conveyor, wherein the deviation of the conveyor belt is prevented by guiding it onto the conveyor belt.

  According to the present invention, by appropriately adjusting the position and size of the frontage formed by the guide plate, the conveyed product can be loaded in a substantially uniform state along the width direction of the conveyor belt (conveyor belt). As a result, the movable rate of the belt conveyor is improved and stable operation can be performed.

  Moreover, it becomes possible to prevent the conveyed product from falling from the conveyor belt, which can improve the environment and contribute to a reduction in cleaning costs.

It is the figure which showed typically Embodiment of the deviation prevention apparatus according to this invention. It is the figure which showed the side surface of the apparatus shown in FIG. 1 in the cross section.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 and 2 are diagrams schematically showing a configuration of a conveyor belt offset preventing device according to the present invention, FIG. 1 is a diagram showing a front view of the conveyor belt in section, and FIG. It is the figure shown in the cross section.

  1 and 2, reference numeral 1 denotes a belt conveyor disposed on the upstream side (hereinafter referred to as an upstream belt conveyor), and 2 denotes a belt disposed on the downstream side in a direction orthogonal to the conveying direction of the upstream belt conveyor 1. It is a conveyor (hereinafter referred to as a downstream belt conveyor).

  Reference numeral 3 denotes a connecting chute for forming a route for dropping and guiding the conveyed product discharged from the outlet side of the upstream belt conveyor 1 to the downstream belt conveyor 2.

  For example, the connecting chute 3 includes an upper chute 3a disposed on the outlet side of the upstream belt conveyor 1, a lower chute 3b disposed immediately above the downstream belt conveyor 2, an upper chute 3a and a lower chute 3b, respectively. It consists of an intermediate chute 3c that is detachably connected. As the intermediate chute 3c, in order to avoid wear and damage due to contact with the conveyed product, a liner made of, for example, high chromium steel is used for the inner wall.

  Reference numeral 4 denotes a rectifying plate which is disposed on the upper chute 3a of the connecting chute 3 and changes the fall trajectory by colliding the conveyed product discharged from the outlet side of the upstream belt conveyor 1 immediately after the discharge.

  The rectifying plate 4 has a main body part 4b that is suspended and supported via a pivot 4a, and a pivot angle θ (an angle formed with the horizontal reference L) by pivoting the main body part 4b around the pivot 4a. And a drive mechanism 4c that can be changed, and a moving mechanism 4d that allows the main body portion 4b to move toward and away from the upstream belt conveyor 1 together with the drive mechanism 4c. As the drive mechanism 4c, a mechanism for moving the rod 4c1 connected to the main body portion 4b forward or backward by hydraulic pressure or an electric motor may be used, and the structure is not particularly limited. As the moving mechanism 4d, a slide mechanism that slides a frame on which the current plate 4 is placed together with the drive mechanism 4c along a guide can be applied.

  Reference numerals 5 a and 5 b denote a pair of guide plates disposed on the lower chute 3 b of the connecting chute 3. The guide plates 5 a and 5 b are arranged along the width direction of the downstream belt conveyor 2, and the transported belt whose downstream trajectory is changed through the opening 6 formed between the guide plates 5 a and 5 b is conveyed to the conveyor belt of the downstream belt conveyor 2. Has the function of guiding up. The guide plates 5a and 5b can change the guide angle θ1 (angle formed with the horizontal reference L1), and can be moved forward and backward along the width direction of the downstream belt conveyor 2 (width direction of the conveyor belt). Drive mechanisms 5a1 and 5b1 are provided.

  The drive mechanisms 5a1 and 5b1 of the guide plates 5a and 5b have a structure that can change the guide angle θ1 and the position along the width direction of the conveyor belt as needed by moving a rod or the like by hydraulic pressure or an electric motor (not shown). Applies.

  7 is a ceramic liner (silicon nitride or the like) provided on the outer surface of the rectifying plate 4, 8 is a ceramic liner (silicon nitride or the like) provided on the guide surfaces of the guide plates 5a and 5b, Reference numerals 10 denote cameras arranged on the upstream side and the downstream side of the connecting chute 3 (upstream side and downstream side of the downstream belt conveyor). The cameras 9 and 10 monitor the deviation of the conveyor belt of the downstream belt conveyor 2. For example, an operator of the unloader monitors images captured by the cameras 9 and 10 in the cab with a monitor. The rotation angle θ of the rectifying plate 4 and the position adjustment in the front-rear direction, and the guide angle θ1 of the guide plates 5a and 5b and the position adjustment in the width direction of the conveyor belt are appropriately adjusted by remote control according to the deviation of the conveyor belt. To stabilize the loaded state.

  The rotation angle θ of the rectifying plate 4 and the position adjustment in the front-rear direction, the guide angle θ1 of the guide plates 5a and 5b, and the position adjustment in the width direction of the conveyor belt are detected. It is also possible to apply a combination of a sensor that performs this operation and a control device that automatically operates the drive mechanism 4c of the rectifying plate 4 and the drive mechanisms 5a1 and 5b1 of the guide plates 5a and 5b based on the output signal of the sensor. This is not a limitation.

  Reference numeral 11 denotes a cleaning nozzle that sprays water or the like on the outer surfaces of the rectifying plate 4 and the guide plates 5a and 5b. As the cleaning nozzle 11, a nozzle that can change the injection angle is used, so that the rotation angle θ of the rectifying plate 4 and the guide angle θ1 of the guide plates 5 a and 5 b are maintained at any angle. , The entire outer surface can be cleaned. The cleaning nozzle 11 can also be provided individually in the immediate vicinity of the rectifying plate 4 and the guide plates 5a and 5b.

  In order to prevent the deviation of the conveyor belt using the apparatus having the above-described configuration, the conveyed product discharged from the upstream belt conveyor 1 and collided with the rectifying plate 4 immediately after being discharged is conveyed. What is necessary is just to change the fall locus | trajectory of an object, and to guide the conveyance thing in which the fall locus | trajectory was changed on the conveyor belt of the downstream belt conveyor 2 through the front opening 6 formed between a pair of guide plates 5a and 5b. .

  The rotation angle θ of the rectifying plate 4 and the position adjustment in the front-rear direction, the guide angle θ1 of the guide plates 5a and 5b, and the position adjustment in the width direction of the conveyor belt are adjusted before starting the conveyance of the conveyed product (offline). However, it can also be performed while the conveyed product is being conveyed (online).

  When the rotation angle θ of the rectifying plate 4 is less than 60 ° with respect to the horizontal reference L, the conveyed product tends to adhere to and accumulate on the outer surface of the rectifying plate 4 and it becomes difficult to adjust the loading, so that it is 60 to 90 °. It is better to adjust the range. Further, the moving amount (stroke) of the rectifying plate 4 by the moving mechanism 4d is preferably about 300 mm, and the load can be adjusted by moving the rectifying plate 4 within this range.

  When the guide angle θ1 of the guide plates 5a and 5b is less than 60 ° with respect to the horizontal reference L1, the transported material tends to adhere to and accumulate on the outer surfaces of the guide plates 5a and 5b, making it difficult to adjust the load. If the angle exceeds 60 °, the conveyed product that has fallen on the downstream belt conveyor 2 spreads toward the end of the conveyor belt in the width direction, making it difficult to adjust the deviation, so the guide angle θ1 is adjusted in the range of 60 to 70 °. Is preferred. Further, the amount of movement of the guide plates 5a and 5b by the drive mechanisms 5a1 and 5b1 can be adjusted to about 100 mm with respect to the width of the conveyor belt of the downstream belt conveyor 2 being about 100 mm, so that the loading can be adjusted.

  With regard to the connecting chute 3, in the present invention, an example of a three-part structure comprising an upper chute 3a, a lower chute 3b, and an intermediate chute 3c has been shown as an example. When transporting different types of transported goods to different yards by the respective downstream belt conveyors 2 by means of transport equipment provided with a plurality of bases (see FIG. 1), the intermediate chute 3c is horizontally fried and the other downstream side It is possible to configure a conveying line simply by matching with the lower chute 3b of the belt conveyor 2 (in this case, the upstream belt conveyor 1 and the upper chute 3a of the connecting chute 3 are also slid), and the conveyed product is efficiently Not only can it be transported, but also the cost of the equipment can be reduced by using the intermediate chute 3c.

  ADVANTAGE OF THE INVENTION According to this invention, the shift | offset | difference of the conveyor belt derived from the uneven accumulation of a conveyed product can be prevented over a long period of time, and the apparatus and method which can implement the stable conveyance operation can be provided.

Reference Signs List 1 upstream belt conveyor 2 downstream belt conveyor 3 transit chute 3a upper chute 3b lower chute 3c intermediate chute 4 current plate 4a pivot 4b body portion 4c drive mechanism 4d moving mechanism 5a, 5b guide plate 5a1, 5b1 drive mechanism 6 frontage 7 , 8 Ceramic liner 9, 10 Camera 11 Cleaning nozzle

Claims (7)

It is located between the upstream belt conveyor and the downstream belt conveyor located below the upstream belt conveyor, and is derived from the uneven accumulation of the conveyed materials discharged and fed from the outlet side of the upstream belt conveyor. A conveyor belt offset prevention device for preventing a conveyor belt offset of a downstream belt conveyor,
A transit chute for forming a path for dropping and guiding the transported material discharged from the outlet side of the upstream belt conveyor to the downstream belt conveyor;
The connecting chute has a rectifying plate at the upper part to change the fall trajectory by colliding with the transported material immediately after discharge, and at the lower part along the width direction of the conveyor belt of the downstream belt conveyor. A conveyor belt in a belt conveyor, characterized by having a pair of guide plates that are arranged and guide a conveyed product whose fall trajectory has been changed through a frontage formed between them onto the conveyor belt of the downstream belt conveyor. Misalignment prevention device. The rectifying plate includes a main body portion that is suspended and held via a pivot, a drive mechanism that allows the pivot angle to be changed by rotating the main body around the pivot, and the main body. With a drive mechanism and a moving mechanism capable of moving back and forth in the direction of approaching and separating from the upstream belt conveyor,
2. The belt conveyor according to claim 1, wherein the pair of guide plates have a drive mechanism that can change a guide angle and can move forward and backward along the width direction of the conveyor belt of the downstream belt conveyor. Device for preventing the conveyor belt from shifting.   The connecting chute includes an upper chute on which a current plate is disposed, a lower chute on which the guide plate is disposed, and an intermediate chute that is detachably connected to the upper chute and the lower chute, respectively. Item 3. A conveyor belt misalignment prevention device in the belt conveyor according to Item 1 or 2.   The said baffle plate is equipped with the ceramic type liner at least on the outer surface where a conveyed product collides, and the said guide plate is equipped with the ceramic type liner at least on the guide surface of a conveyed product. A device for preventing a shift of a conveyor belt in the belt conveyor according to item 1.   2. The downstream belt conveyor includes a camera for monitoring a shift state of a conveyor belt of the downstream belt conveyor on each of an upstream side and a downstream side across the connecting chute. The apparatus for preventing the deviation of the conveyor belt in the belt conveyor according to any one of -4.   The said rectifying plate and the said guide plate have the washing nozzle which wash | cleans the outer surface, The shift | offset | difference prevention device of the conveyor belt in the belt conveyor of any one of Claims 1-5 characterized by the above-mentioned. In preventing the deviation of the conveyor belt of the downstream belt conveyor using the deviation prevention device according to any one of claims 1 to 6,
Immediately after discharge, the transported material discharged and fed from the outlet side of the upstream belt conveyor is collided with the baffle plate to change the fall trajectory of the transported material, while the transported material having the changed fall trajectory is paired with a guide. A method of preventing a deviation of a conveyor belt in a belt conveyor, wherein the deviation of the conveyor belt is prevented by guiding the belt on a conveyor belt of a downstream belt conveyor through an opening formed between the plates.

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