JP2000313518A - Belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt conveyor device capable of easily and surely correcting the deflection of a belt using a falling direction adjusting plate, and realizing a labor saving. SOLUTION: The belt conveyor device in which an object P to be conveyed which falls down from an upstream conveyor 1 onto a conveying belt 12 of a downstream conveyor 2 is allowed to abut against a falling direction adjusting plate 16 to adjust the falling direction of the object P to be conveyed, is structured to be provided with a detecting means 4 for detecting the one-sidedness of the conveying belt 12, and a driving means 17 for changing the inclination of the falling direction adjusting plate 16 based on the detection results of the detecting means 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor device for adjusting a falling direction of a conveyed object by bringing the object falling from an upstream conveyor onto a conveyor belt of a downstream conveyor into contact with a drop direction adjusting plate.

[0002]

2. Description of the Related Art In a belt conveyor device for transporting a load such as coal on a transfer belt, the load may be dropped from an upstream conveyor and transferred to a downstream conveyor. At this time, if the dropped article is mounted near the end of the conveyor belt in the width direction, the weight of the article acts in one of the width directions as the conveyor belt moves, and the conveyor belt is shifted. Cheap. For this reason, in the conventional belt conveyor device, a drop direction adjusting plate for adjusting the drop direction of the conveyed article is provided, and care is taken so that the conveyed article is mounted at the center of the downstream conveyor. By changing the inclination of the drop direction adjusting plate, the falling direction of the conveyed object that is in contact with it can be changed.To adjust the inclination of the drop direction adjusting plate, the operator can visually check the conveyed object on the downstream conveyor. While doing.

[0003]

However, in the above-described conventional belt conveyor device, since the operator adjusts the inclination of the drop direction adjusting plate visually and judges it, if the operator is not proficient in the operation, one of the conveyor belts is not used. Difficult to correct leaning. Also, since the deviation of the conveyor belt gradually progresses,
It is difficult to determine a stable state without deviation in a short time. That is, it is difficult to stably maintain the transport belt in a state where there is no deviation, and a great deal of labor is required for adjustment. If the inclination of the drop direction adjustment plate is not sufficiently adjusted, the transport belt may become more skewed and the load may fall out, or the side edges of the transport belt may rub against other members. Problems such as damage will occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and a belt conveyor device capable of easily and reliably correcting the deviation of a belt by using a drop direction adjusting plate and saving power. The purpose is to provide.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a method in which a conveyed object falling from an upstream conveyor onto a conveyor belt of a downstream conveyor is brought into contact with a drop direction adjusting plate. A belt conveyor device for adjusting the falling direction of the conveyor belt, comprising a detecting unit for detecting a deviation in the width direction of the conveyor belt, and a driving unit for changing the inclination of the falling direction adjusting plate based on the detection result of the detecting unit. Technology is adopted. Since this belt conveyor device includes a detecting means for detecting the deviation of the conveyor belt and a driving means for changing the inclination of the drop direction adjusting plate, the falling direction of the conveyed object changes based on the detection result, and The transported goods will be mounted in the appropriate places.

According to a second aspect of the present invention, in the belt conveyer apparatus of the first aspect, a technique is employed in which the detecting means detects a deviation of the conveyor belt at a location distant from the place where the conveyed article falls. In this belt conveyor device, since the shift of the conveyor belt is detected at a place distant from the place where the load is dropped, the detection is performed at a place where the shift is large.

[0007] The invention according to claim 3 is the invention according to claim 1 or 2.
In this belt conveyor device, a technique is employed in which a drop direction adjusting plate is rotatably supported at an upper end, and a driving unit presses a back surface of the drop direction adjusting plate to change the inclination of the drop direction adjusting plate. In this belt conveyor device, the falling direction adjusting plate is rotatably supported at the upper end, and the driving means presses the back surface of the falling direction adjusting plate to change the inclination of the falling direction adjusting plate. It is possible to change the falling direction of the transported object.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a belt conveyor device according to the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing an outline of the present embodiment, wherein reference numeral 1 denotes an upstream conveyor, 2 denotes a downstream conveyor, 3 denotes a chute, 4 denotes a detection means, and 5 denotes a control means. The belt conveyor device is configured such that a conveyed material P such as coal conveyed from the upstream conveyor 1 falls in the chute 3 and is mounted on the downstream conveyor 2.

The upstream conveyor 1 and the downstream conveyor 2
Pulleys 10 are rotatably provided at both ends in the transport direction, and transport belts 11 and 12 are wound around the pulley 10. When the pulley 10 rotates, the transport belts 11 and 12 rotate, and the conveyed articles P mounted on the transport belts 11 and 12 move in the horizontal direction. As shown in the plan view of FIG. 2, these conveyors 1 and 2 intersect at a predetermined angle in the conveying direction, and are located immediately below the end of the upstream conveyor 1 and near the starting end of the downstream conveyor 2. Are arranged to be located.

Returning to FIG. 1, the conveyor belts 11 and 12 have their lower surfaces supported by the upper end surface of a roller 13. A plurality of rollers 13 are arranged in a row, and a large number of the rows are arranged at predetermined intervals in the transport direction. The transport belts 11 and 12 follow the rollers 13 according to their own weight and the weight of the transported object P, whereby the surface on which the transported object P is mounted is formed in a state where the center is depressed.

The chute 3 covers the end of the upstream conveyor 1 to prevent the conveyed material P and dust from scattering to the outside, and surrounds the lower portion of the cover 14 to guide the conveyed material P downward. Skirt 15 and upstream conveyor 1
The apparatus mainly includes a drop direction adjusting plate 16 that adjusts a drop direction by bringing a conveyed object P falling from the contact surface 16a into contact with the contact surface 16a, and a driving unit 17 that changes the inclination of the drop direction adjusting plate 16.

The drop direction adjusting plate 16 is a plate-like member whose upper end is rotatably supported, and is formed so that the width of the contact surface 16a is longer than the width of the upstream conveyor 1 in the width direction. I have. Further, the contact surface 16a is disposed so as to oppose the traveling direction of the upstream conveyor 1, and the center of the contact surface 16a in the width direction substantially coincides with that of the upstream conveyor 1.

As shown in FIGS. 1 and 3, the driving means 17 includes a pressing portion 18 formed to be curved so as to press the rear surface 16b of the drop direction adjusting plate 16 on the convex surface side, and a pressing portion 1.
A drive shaft portion 19 having one end connected to the concave surface side of 8 and reciprocating the pressing portion 18 in the horizontal direction, and a drive shaft portion 19 having one end connected to the pressing portion 18 for guiding the horizontal movement of the pressing portion 18. A guide portion 20 provided in parallel on both sides of the drive shaft portion 19, a gear box 21 for converting a rotary motion into a linear motion for reciprocating the drive shaft portion 19, and a gear box 21 connected to the gear box 21 and not shown. It mainly comprises an electric motor 22 for rotating the output shaft in the forward and reverse directions. The driving means 17 has a motor 22 connected to the control means 5, whereby the pressing portion 18 reciprocates in the horizontal direction based on a signal from the control means 5.

As shown in FIG. 2, the detecting means 4 is attached to a frame 23 which is installed at a location separated from the chute 3 by a predetermined distance in the transport direction. An approach is detected.
That is, as shown in FIG. 1, two detection units 4 are mounted side by side on the ceiling portion of the frame 23, and the detection units 24 that move like a pendulum are arranged outside both ends in the width direction of the transport belt 12. The detection means 4 is configured to conduct electricity when the detection unit 24 moves by a predetermined amount or more, and is, for example, a limit switch. Also, detecting means 4
Are connected to the control unit 5 so that the control unit 5 checks the energization state of the detection unit 24.
Note that the distance from the chute 3 to the detection means 4 is determined so that the detection by the detection means 4 is performed in a place where the deviation of the conveyor belt 12 becomes large.

The control means 5 controls the driving means 17 based on the detection result of the detection means 4. Here, as shown in FIG. 3, the driving unit 17 is controlled to move the pressing unit 18 and move the pressing unit 18 to the positions (a) to (b).
(C) Stop at any position. That is, the control unit 5 does not operate the pressing unit 18 when neither of the two detection units 4 has detected the transport belt 12, and when the detection unit 4 detects the transport belt 12, (A)-(b) or position (a)-
The pressing portion 18 is moved to one of (c). Also, 2
When a detection signal is received from one of the detection means 4, an error warning is issued.

Next, the operation of the belt conveyor device configured as described above will be described. Here, “left and right” is defined as the left and right direction in FIGS. 1 and 4, that is, the width direction left and right when viewing the downstream side from the upstream side.

As shown in FIG. 1, the upstream conveyor 1 drops a conveyed object P such as coal into the chute 3 at the terminal end. At this time, the falling direction of the falling load P is adjusted by contacting the drop direction adjusting plate 16 during the drop. When the back surface 16b is pressed by the pressing portion 18 of the driving means 17, the inclination of the contact surface 16a is changed, and the falling direction adjusting plate 16 is moved from the side closer to the upstream conveyor 1 according to the stop position of the pressing portion 18. (C)-(a)
(B) is freely positioned.

Subsequently, the conveyed object P is dropped on the drop direction adjusting plate 16.
After the falling direction is adjusted, it is mounted on the conveyor belt 12 of the downstream conveyor 2. The conveyed article P falls in various ways depending on its physical characteristics, and when the material lot and the environmental condition are different, the mounting location on the conveyor belt 12 is often different. That is, there is a case where the transfer belt 12 is not located near the center of the transfer belt 12 shown in FIG.

When the transported object P is mounted on one side of the transport belt 12 while being shifted to the left or right, the transport belt 12 gradually shifts to the left or right as the transported object P is transported. That is, when the load P is offset and mounted on the transport belt 12, a force due to the weight of the load P acts so that the center of gravity of the load P returns to the center of the downstream conveyor 2. Since the conveyor belt 12 is supported by the upper end surface of the roller 13, the lower surface of the conveyor belt 12 and the upper end surface of the roller 13 slide in the left-right direction, and the conveyor belt 12 gradually shifts in the above-described direction of the force. Become like

When the deviation of the conveyor belt 12 exceeds a predetermined amount, the detecting means 4 detects the deviation. At this time, since the detecting unit 4 is arranged away from the drop location of the conveyed article P so as to detect at a place where the deviation of the transport belt 12 is large, it is possible to reliably detect the deviation of the transport belt 12. It is possible.

When the detection unit 4 detects the deviation of the conveyor belt 12, the control unit 5 determines the deviation based on the detection result.
The electric motor 22 shown in FIG. 3 is driven to move the pressing portion 18 in the horizontal direction to change the inclination of the drop direction adjusting plate 16.
Hereinafter, mainly with reference to FIG. 4, a relationship between the direction in which the conveyor belt 12 is biased and the movement of the drop direction adjusting plate 16 will be described.

First, as shown in FIG. 4 (a), when the transported object P is mounted substantially at the center of the transport belt 12, the transport belt 12 transports the transported object P relatively stably without displacement. I do. The two detecting means 4 do not detect the transport belt 12, and the drop direction adjusting plate 16 is stopped in the same state immediately after the start of operation.

However, as shown in FIG. 4 (b), when the goods P are mounted on the left side, the conveyor belt 12 is shifted on the right side, and the right detecting means 4 is operated.
The control means 5 receives this detection result and
7 to tilt the drop direction adjusting plate 16 in a direction away from the upstream conveyor 1. Thereby, the upstream conveyor 1
Transported material P falls from the center of the downstream conveyor 2 or slightly to the right. Then, the transported object P is mounted near the center, so that the unevenly mounted state of the transported object P, which has caused the offset, is improved.
Is gradually corrected. Also, at this time, if the transported object P is mounted slightly to the right, a force due to the weight of the transported object P acts in a direction opposite to the direction in which the transported object P is currently offset, that is, to the left. The right side is corrected.

Conversely, as shown in FIG. 4 (c), when the conveyed article P is mounted on the right side, the conveyor belt 12 leans on the left side, and the left detecting means 4 operates.
Therefore, the control unit 5 drives the driving unit 17 to tilt the drop direction adjustment plate 16 in a direction approaching the upstream conveyor 1. As a result, the conveyed articles P from the upstream conveyor 1 fall to the center or slightly to the left, the mounting state to the right is improved, and the displacement of the transport belt 12 is corrected.

As described above, in this belt conveyor device, the falling direction of the transported object P changes based on the detection result of the deviation of the transport belt 12, and the transported object P is mounted at an appropriate place on the transport belt 12. Therefore, the biasing of the transport belt 12 that causes the transport belt 12 to be offset is improved, or the gravity of the transport belt P acts in the width direction to automatically correct the offset of the transport belt 12. can do. Moreover, since the control means 5 automatically moves the drop direction adjusting plate 16 in response to the detection result of the detection means 4,
Less effort is required. Further, since the correction is performed continuously, it is unlikely that the transport belt 12 is largely shifted.

The relationship between the direction in which the conveyor belt 12 is offset and the inclination of the drop direction adjusting plate 16 is not limited to the above. That is, this relationship may change depending on the arrangement position of the detection means 4, the method of supporting the transport belt 12, and the like. Such a case is dealt with by changing the control method of the driving means 17 by the control means 5.

Further, in this embodiment, the detecting means 4 uses a means such as a limit switch for detecting the movement of a predetermined amount or more. May be measured. Further, the inclination of the drop direction adjusting plate 16 may be finely controlled by the drive unit 17 based on the amount of deviation measured by the detection unit. With such a configuration, the deviation of the conveyor belt 12 can be corrected with high accuracy, and the problem due to the deviation of the conveyor belt 12 can be more reliably prevented.

[0028]

As described above, according to the present invention, the following effects can be obtained. In the belt conveyor device according to the first aspect, the direction of drop of the conveyed object changes based on the detection result of the deviation of the conveyor belt, and the conveyed object is mounted at an appropriate location on the conveyor belt. To improve the biased loading of conveyed objects,
Alternatively, the deviation of the conveyor belt can be automatically corrected by applying the gravity of the conveyed object in the width direction. Therefore, the deviation of the conveyor belt can be easily corrected, and labor can be saved. Then, by correcting the offset of the transport belt, it is possible to suppress the falling of the transported object and the damage to the side edge of the transport belt.

[0029] In the belt conveyor device according to the second aspect,
Since the shift of the conveyor belt is detected at a place away from the drop location of the load, detection is performed at a place with a large shift,
The deviation of the conveyor belt can be detected more reliably.

[0030] In the belt conveyor device according to claim 3,
The drop direction adjustment plate is rotatably supported at the upper end, and the driving means presses the back of the drop direction adjustment plate to change the inclination, so that the drop direction of the load can be easily changed with a simple configuration,
The deviation of the conveyor belt can be corrected.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of a belt conveyor device according to the present invention.

FIG. 2 is a schematic plan view of the belt conveyor device shown in FIG.

FIG. 3 is a sectional view taken along the line AA shown in FIG.

FIG. 4 is an operation explanatory view showing the operation of a detecting means and a drop direction adjusting plate.

[Explanation of symbols]

 P Conveyed object 1 Upstream conveyor 2 Downstream conveyor 3 Chute section 4 Detecting means 5 Control means 11, 12 Conveying belt 16 Drop direction adjusting plate 16a Contact surface 16b Back surface 17 Driving unit 18 Pressing unit

Claims (3)

[Claims] 1. A belt conveyor device that adjusts a falling direction of a conveyed object by bringing a conveyed object that falls from an upstream conveyor onto a conveyer belt of a downstream conveyor into contact with a drop direction adjusting plate, wherein the width of the conveyer belt is adjusted. A belt conveyor device comprising: detecting means for detecting a deviation in a direction; and driving means for changing a tilt of the drop direction adjusting plate based on a detection result of the detecting means. 2. The belt conveyor device according to claim 1, wherein said detecting means detects a deviation of said conveyor belt at a location distant from a drop location of said conveyed article. 3. The drop direction adjusting plate has an upper end rotatably supported, and the drive means presses the back surface of the drop direction adjusting plate to change the inclination of the drop direction adjusting plate. The belt conveyor device according to claim 1 or 2, wherein