Falling object recovery device

Abstract

To provide a falling object recovery device that can reduce the maintenance work load even when the height of the space below the belt conveyor is low. 【Solution means】The falling object recovery device 10 includes a receiving plate 21 for receiving the falling object 20, an actuator 23 that reciprocates in a predetermined direction and operates the falling object 20 in that direction, and a swing board 24 that can block the falling object 20 on the receiving plate 21. When the actuator 23 operates in a predetermined direction, the swing board 24 rotates so that the falling object 20 can pass through. When the actuator 23 operates in a direction opposite to the predetermined direction, the swing board 24 stops so that the falling object 20 can be blocked. With this configuration, the height of the falling object recovery device 10 can be kept low, and the falling object recovery device 10 can be installed even when the space height is low, reducing the load of the maintenance work of the belt conveyor 11.

Description

Technical Field

[0001] The present invention relates to a falling object recovery device. More specifically, the present invention relates to a falling object recovery device that recovers falling objects such as loose materials that fall from a belt conveyor.

Background Art

[0002] In a steel mill that handles a large amount of minerals, for example, ore falls accumulate around or at the joints of conveying means such as a belt conveyor in the raw material yard, or deposits on the belt surface peel off and fall during the reverse operation of the belt conveyor, causing problems that hinder the conveyance of ore. Patent Document 1 discloses a device for recovering this fallen ore.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The fallen ore recovery device of Patent Document 1 is described as recovering the fallen ore deposited in the low-ceiling space below the belt conveyor. And the height of the low-ceiling space is high enough for the bucket of the fallen ore recovery device to be inserted. However, when the height of the low-ceiling space is insufficient, manual recovery work has to be carried out, resulting in a problem that the load of the maintenance work of the belt conveyor increases.

[0005] In view of the above circumstances, an object of the present invention is to provide a falling object recovery device that can reduce the load of the maintenance work of the belt conveyor even when the height of the space below the belt conveyor is low.

Means for Solving the Problems

[0006] The falling object recovery device of the first invention includes a receiving plate for receiving falling objects from a belt conveyor, an actuator that reciprocates in the longitudinal direction of the belt conveyor to move the falling objects in the longitudinal direction of the belt conveyor, and a swing board installed between the receiving plate and the belt conveyor and capable of blocking the falling objects on the receiving plate. The swing center of the swing board is provided parallel to the receiving plate. When the actuator operates in a predetermined direction, the swing board rotates so that the falling objects can pass through. When the actuator operates in a direction opposite to the predetermined direction, the swing board stops so that the falling objects are blocked by the swing board. The receiving plate and the actuator are connected, and the receiving plate reciprocates due to the reciprocating motion of the actuator. It is characterized by this. No. 2 The falling object recovery device of the invention, in the first invention, the actuator is composed of a cylinder and a piston, and the actuator is provided with an operating medium injection port to the cylinder.

Effect of the Invention

[0007] According to the first invention, it includes a receiving plate, an actuator, and a swing board. When the actuator operates in a predetermined direction, the swing board rotates so that the falling objects can pass through. When the actuator operates in a direction opposite to the predetermined direction, the swing board stops so that the falling objects are blocked. Different from the belt conveyor method, the structure of the belt return can be omitted, so the height of the falling object recovery device in the vertical direction can be kept low. Thereby, even when the space height under the belt conveyor is low, the falling object recovery device can be installed, and the load of the maintenance work of the belt conveyor can be reduced. Also, The receiving plate and the actuator are connected, and the receiving plate reciprocates due to the reciprocating operation of the actuator, so that the receiving plate for receiving the falling objects can be directly operated. Therefore, the number of parts of the falling object recovery device can be suppressed, and the manufacturing cost of the falling object recovery device can be suppressed. No. 2According to the invention, the actuator is composed of a cylinder and a piston, and an operating medium inlet is provided in the actuator. Therefore, it is not necessary to provide accessory parts such as a tank for supplying cylinder oil or air to all cylinders, and the operating medium can be injected from the operating medium inlet as needed, so that the installation cost of the dropped object recovery device can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0009] Next, embodiments of the present invention will be described with reference to the drawings. However, the embodiments shown below illustrate a falling object recovery device for embodying the technical idea of the present invention, and the present invention is not limited to the following falling object recovery device. Note that the sizes or positional relationships of the members shown in each drawing may be exaggerated for clarity of explanation. Also, the words "vertical", "horizontal", "perpendicular", and "parallel" are not to be interpreted strictly in those terms, but rather "substantially vertical", "substantially horizontal", "substantially perpendicular", and "substantially parallel" to the extent that the members produce the effects associated with those terms.

[0010] (First Embodiment) FIG. 2 is an explanatory view from the side direction of the usage state of the falling object recovery device 10 according to the first embodiment of the present invention, and FIG. 3 is an explanatory view from the front direction thereof. Hereinafter, a system using a belt conveyor 11 in which the falling object recovery device 10 of the present embodiment may be applied will be described.

[0011] In a steelworks or the like, a plurality of belt conveyors 11 are installed in series so as to continuously convey a conveyed object 19 such as scrap serving as a raw material. In FIG. 2, as indicated by the white arrow, the conveyed object 19 is conveyed from the left side to the right side on the paper surface. That is, the conveyed object 19 is supplied from the supply device 13 of the conveyed object 19 onto the belt conveyor 11 located most to the left, and the conveyed object 19 moves horizontally on the belt conveyor 11. Then, the conveyed object 19 is conveyed to a position higher than the left belt conveyor 11 by the next belt conveyor 11, passes through the supply device 13 again, and the conveyed object 19 is supplied to the belt conveyor 11 located at the right end on the paper surface. The belt conveyor 11 located at the right end conveys the conveyed object 19 from the back side to the front side in the paper surface of FIG. 2.

[0012] The belt 12 used in the belt conveyor 11 is endless. When conveying the object to be conveyed 19, it moves in the direction of the white arrow. However, after the object to be conveyed 19 has moved to the next belt conveyor 11, it moves in the direction opposite to the white arrow with the surface that was in contact with the object to be conveyed 19 facing downward. Here, at the joint between the belt conveyors 11, the object to be conveyed 19 may fall, or the adherents on the belt 12 may fall during the return operation. The falling object recovery device 10 according to the present embodiment is installed below the belt 12 during the return operation, as shown in FIGS. 2 and 3.

[0013] FIG. 1 shows an explanatory view of the falling object recovery device 10 according to the present embodiment as viewed from the perspective direction. The falling object recovery device 10 includes a receiving plate 21 for receiving the falling object 20 from the belt conveyor 11. This receiving plate 21 is a strip steel plate of a long flat plate. However, it is not limited to this, and the material and form can be appropriately selected according to the form of the falling object 20. The longitudinal direction of the receiving plate 21 is parallel to the longitudinal direction of the belt conveyor 11. The size of the receiving plate 21 is not particularly limited. However, it is necessary to be a size that can be installed below the belt conveyor 11. For example, the length in the longitudinal direction of the receiving plate 21 is preferably 100 m or less, and the length in the short side direction is preferably 2 m or less.

[0014] The falling object recovery device 10 includes a receiving rail 22 that supports the long side of the receiving plate 21. This receiving rail 22 is a so-called angle steel, and is configured in such a form that one side of the angle steel is positioned vertically and the other side is positioned horizontally in the direction where the receiving plate 21 is present so as to be able to receive the receiving plate 21. With this configuration, the receiving plate 21 can operate in the longitudinal direction with respect to the receiving rail 22.

[0015] In the falling object recovery device 10 according to this embodiment, an actuator 23 is provided on each of the two receiving rails 22. In this embodiment, these actuators 23 are hydraulic cylinders. However, it is not limited to this, and it may be an air cylinder, a ball screw, or an electric power cylinder using a trapezoidal screw without any problem. Further, the actuator 23 may be provided on any one of the receiving rails 22. A receiving plate 21 is connected to the piston constituting the actuator 23. By connecting the piston of the actuator 23 to the receiving plate 21, the receiving plate 21 can reciprocate in the longitudinal direction of the belt conveyor 11. And when the receiving plate 21 reciprocates, the actuator 23 can reciprocate the falling object 20 that has fallen on the receiving plate 21 in the longitudinal direction of the belt conveyor 11. The stroke of the reciprocating motion of the actuator 23 is determined by the interval between adjacent swing boards 24. Specifically, the stroke is preferably 1 m or less.

[0016] In this embodiment, the hydraulic cylinder that is the actuator 23 is provided with an injection port (not shown) for the hydraulic oil that is the operating medium. That is, the hydraulic cylinder is not constantly connected to the hydraulic pump, but is connected to the hydraulic pump for each recovery operation.

[0017] Since the actuator 23 is configured to include a cylinder and a piston, and an operating medium injection port is provided in the actuator 23, it is not necessary to provide accessory parts such as a tank for supplying cylinder oil or air to all the cylinders, and the operating medium can be injected from the operating medium injection port as needed. Therefore, the installation cost of the falling object recovery device 10 can be suppressed.

[0018] The falling object recovery device 10 according to this embodiment has a plurality of swing boards 24. These swing boards 24 are installed between the receiving plate 21 and the belt conveyor 11. In this embodiment, the swing board 24 is provided with a rotating shaft 25 extending across two receiving rails 22, and this rotating shaft 25 is configured to be parallel to the receiving plate 21. The swing board 24 can rotate about the rotating shaft 25. Also, the swing board 24 is prevented from rotating in a predetermined direction by a rotation stopper 26 provided on the receiving rail 22. In this embodiment, the swing board 24 is made of steel. However, it is not limited to this, and the material can be appropriately selected according to the form of the falling object 20. The interval between the swing boards 24 is determined by the form of the falling object 20. For example, this interval is preferably 1 m or less.

[0019] FIG. 4 shows an operation explanatory diagram of the falling object recovery device 10 of this embodiment. FIG. 4 is a view of the falling object recovery device 10 as seen from its short side direction. FIG. 4(A) is a view before the receiving plate 21 starts operating, FIG. 4(B) is a view while the receiving plate 21 is operating in the direction of the first arrow 27, and FIG. 4(C) is a view while the receiving plate 21 is operating in the direction of the second arrow 28. The falling object recovery device 10 operates in the order of FIGS. 4(A), 4(B), and 4(C), and moves the falling object 20 from left to right on the plane of FIG. 4.

[0020] In FIG. 4(A), the falling object 20 is falling onto the receiving plate 21. When the falling object 20 falls, the swing board 24 maintains a posture in which its thickness direction is horizontal so that the falling object 20 can appropriately fall onto the receiving plate 21.

[0021] Next, as shown in FIG. 4(B), the receiving plate 21 is moved in the direction of the first arrow 27 by the actuator 23. At this time, the falling object 20 contacts the lower side of the swing board 24. Due to this contact, the swing board 24 rotates counterclockwise in the plane of FIG. 4 about the rotation axis 25. The actuator 23 operates in the direction of the first arrow 27 by a predetermined distance. This operating distance is preferably slightly longer than the distance between adjacent swing boards 24. After the actuator 23 operates in the direction of the first arrow 27 by a predetermined distance, the swing board 24 returns to a posture in which its thickness direction is horizontal due to its own weight.

[0022] Next, as shown in FIG. 4(C), the receiving plate 21 is moved in the direction of the second arrow 28 by the actuator 23. At this time, the swing board 24 is stopped by the rotation stopper 26 while maintaining a posture in which its thickness direction is horizontal, that is, the posture shown in FIG. 4(C). By maintaining this posture, the falling object 20 is blocked by the swing board 24. When the actuator 23 is reciprocated in this way, in FIG. 4, the falling object 20 moves from left to right.

[0023] The falling object recovery device 10 includes a receiving plate 21, an actuator 23, and a swing board 24. When the actuator 23 operates in a predetermined direction, the swing board 24 rotates so that the falling object 20 can pass through. When the actuator 23 operates in the direction opposite to the predetermined direction, the swing board 24 stops so that the falling object 20 is blocked. Different from the belt conveyor method, the return configuration of the belt 12 can be omitted, so the vertical height of the falling object recovery device 10 can be kept low. As a result, the falling object recovery device 10 can be installed even when the space height under the belt conveyor 11 is low, and the load of the maintenance work of the belt conveyor 11 can be reduced.

[0024] The receiving plate 21 and the actuator 23 are connected, and the receiving plate 21 reciprocates due to the reciprocating motion of the actuator 23, so that the receiving plate 21 that receives the falling object 20 can be directly operated. Therefore, the number of parts of the falling object recovery device 10 can be suppressed, and the manufacturing cost of the falling object recovery device 10 can be suppressed.

[0025] (Second Embodiment) FIG. 5 shows an explanatory view of the falling object recovery device 10 according to the second embodiment of the present invention as viewed from a perspective direction, and FIG. 6 shows a cross-sectional view of a retaining member 31a of the slide body 31 constituting the falling object recovery device 10 as viewed from its longitudinal direction.

[0026] The falling object recovery device 10 according to the present embodiment includes a receiving plate 21 that receives the falling object 20 from the belt conveyor 11. This receiving plate 21 is joined to the receiving rail 22 by welding, unlike the receiving plate 21 of the first embodiment. Since the configurations of the receiving plate 21 and the receiving rail 22 are the same as those of the first embodiment in other respects, the description thereof is omitted. Note that the joining method is not limited to welding. It may be joined by screwing in some cases.

[0027] The falling object recovery device 10 according to the present embodiment is provided above the receiving plate 21 and includes a slide body 31 that operates along the longitudinal direction of the receiving plate 21. This slide body 31 has a so-called ladder shape and is configured to include two long bars and a plurality of retaining members 31a provided between these long bars. These retaining members 31a are provided at predetermined intervals from each other. The slide body 31 reciprocates along the longitudinal direction of the long bar constituting the slide body 31.

[0028] The retaining member 31a that constitutes the slide body 31 has a shape that becomes longer in a direction predetermined for the actuator 23 in a cross-section perpendicular to the longitudinal direction of the retaining member 31a, that is, in the cross-section shown in FIG. 6. In FIG. 6, the slide body 31 operates in the direction of the first arrow 27, and moves the falling object 20 to the right in the plane of the drawing of FIG. 6. The retaining member 31a is triangular in the plane of the drawing of FIG. 6, and in this shape, the second height H2 is longer than the first height H1. Note that in the present embodiment, the cross-section of the retaining member 31a is triangular, but the shape is not limited to this.

[0029] The slide body 31 is coupled to the piston that constitutes the actuator 23, and performs a reciprocating motion by the reciprocating motion of the actuator 23. Since the configuration of the actuator 23 is the same as that of the first embodiment, the description thereof is omitted.

[0030] The falling object recovery device 10 according to the present embodiment has a plurality of swing boards 24. Since the configuration of these swing boards 24 is the same as that of the first embodiment, the description thereof is omitted.

[0031] FIG. 7 shows an operation explanatory diagram of the falling object recovery device 10 of the present embodiment. FIG. 7 is a view of the falling object recovery device 10 as seen from its short side direction. FIG. 7(A) is a view before the slide body 31 starts operating, FIG. 7(B) is a view while the slide body 31 is operating in the direction of the first arrow 27, and FIG. 7(C) is a view while the slide body 31 is operating in the direction of the second arrow 28. The falling object recovery device 10 operates in the order of FIGS. 7(A), 7(B), and 7(C), and moves the falling object 20 from left to right in the plane of the drawing of FIG. 5.

[0032] In FIG. 7(A), the falling object 20 is falling onto the receiving plate 21. When the falling object 20 falls, the swing board 24 maintains a posture in which its thickness direction is horizontal so that the falling object 20 appropriately falls onto the receiving plate 21.

[0033] Next, as shown in FIG. 7(B), the slide body 31 is moved in the direction of the first arrow 27 by the actuator 23. At this time, the falling object 20 comes into contact with the lower side of the swing board 24. Due to this contact, the swing board 24 rotates counterclockwise in the plane of FIG. 5 about the rotation axis 25. The actuator 23 operates in the direction of the first arrow 27 by a predetermined distance. It is preferable that this operating distance is slightly longer than the distance between adjacent swing boards 24. After the actuator 23 operates in the direction of the first arrow 27 by a predetermined distance, the swing board 24 returns to a posture in which its thickness direction is horizontal due to its own weight.

[0034] In addition, in the present embodiment, as shown in FIG. 6, the form of the stopper member 31a constituting the slide body 31 is such that the cross section in the direction perpendicular to the longitudinal direction of the stopper member 31a is long in the predetermined direction of the actuator 23, that is, in the right direction in FIG. 6.

[0035] Since the cross section of the stopper member 31a is long in a predetermined direction, the falling object 20 can be conveyed more reliably.

[0036] Next, as shown in FIG. 7(C), the slide body 31 is moved in the direction of the second arrow 28 by the actuator 23. At this time, the swing board 24 is stopped while maintaining a posture in which its thickness direction is horizontal, that is, the posture shown in FIG. 7(C), by a rotation stopper 26 (not shown). By maintaining this posture, the falling object 20 is blocked by the swing board 24. Thus, by the reciprocating operation of the actuator 23, in FIG. 5, the falling object 20 moves from left to right.

[0037] Since the actuator 23 and the slide body 31 having a predetermined structure are connected, and the slide body 31 reciprocates by the reciprocating operation of the actuator 23, the form of the slide body 31 can be changed according to the form of the falling object 20, so that the falling object 20 can be conveyed reliably.

Industrial Applicability

[0038] In the background art, as an example of the technical field where the belt conveyor 11 is used, an example of a steelworks that handles a large amount of minerals was taken. However, the falling object recovery device 10 according to the present invention is not limited to being used for the belt conveyor 11 in this field. It can also be used for a belt conveyor 11 for transporting biomass fuel or a belt conveyor 11 for transporting coal.

Explanation of Reference Numerals

[0039] 10 Falling object recovery device 11 Belt conveyor 20 Falling object 21 Receiving plate 23 Actuator 24 Swing board 31 Slide body 31a Blocking member

Claims

1. A receiving plate for receiving falling objects from a belt conveyor, an actuator that reciprocates in the longitudinal direction of the belt conveyor and operates the falling objects in the longitudinal direction of the belt conveyor, a swing board installed between the receiving plate and the belt conveyor and capable of blocking the falling objects on the receiving plate, and the swing center of the swing board is provided parallel to the receiving plate, when the actuator operates in a predetermined direction, the swing board rotates so that the falling objects pass through, when the actuator operates in a direction opposite to the predetermined direction, the swing board stops so that the falling objects are blocked by the swing board, the receiving plate and the actuator are connected, the receiving plate reciprocates by the reciprocating operation of the actuator, A falling object recovery device characterized by the above.

2. The actuator is configured to include a cylinder and a piston, the actuator is provided with an operating medium injection port to the cylinder, The falling object recovery device according to claim 1, characterized by the above.

Images