Fence device

Abstract

This protective fence device is installed so as to surround a manufacturing facility comprising: a first device movable along a first movement path between a first position and a second position; and a second device movable along a second movement path between a third position and a fourth position. The protective fence device is provided with a movable fence part which is configured to surround, when the first device is in motion, the first device and a first region including the first movement path. The protective fence device is configured to surround, when the second device is in motion, the second device and a second region including the second movement path.

Description

Technical Field

[0001] The present disclosure relates to a protective fence device. This application claims priority based on Japanese Patent Application No. 2023-110520 filed in Japan on July 5, 2023, and incorporates its content herein by reference.

Background Art

[0002] Patent Document 1 discloses a protective fence for a melting furnace installed around the melting furnace. The protective fence includes a front protective fence that can be opened and closed and is installed in front of the melting furnace, movable movable protective fences installed on both sides of the front side of the melting furnace, a foldable folding protective fence installed on one side of the melting furnace, a fixed protective fence installed outside the other side of the melting furnace, and a double-structured protective fence including a protective fence with a rotation shaft at one end and controlled to open and close installed inside the other side.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure describes a protective fence device that can ensure the safety and workability of workers even when the restricted access range for workers changes as a plurality of devices move in manufacturing equipment equipped with a plurality of movable devices.

Means for Solving the Problems

[0005] An example of a protective fence device is a protective fence device installed to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position. An example of the protective fence device is configured to surround a first area including the first movement path together with the first device when the first device moves, and See, the second device does not enclose configured to surround a second area including the second movement path together with the second device when the second device moves. See, the second device does not enclose The protective fence device includes a movable fence part.

Advantages of the Invention

[0006] According to the protective fence device of the present disclosure, in a manufacturing facility including a plurality of movable devices, even when the restricted access range for operators changes as the plurality of devices move, it is possible to ensure the safety and workability of the operators.

Brief Description of the Drawings

[0007]

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MODE FOR CARRYING OUT THE INVENTION

[0008] In the following description, the same reference numerals are used for the same elements or elements having the same function, and redundant descriptions are omitted. In this specification, when referring to up, down, right, and left in the drawings, the directions of the reference numerals in the drawings are used as the reference.

[0009] [Continuous Casting Equipment] First, with reference to FIGS. 1 to 3, the configuration of the continuous casting equipment 100 (manufacturing equipment) will be described. The continuous casting equipment 100 includes a ladle 101, two tundishes 102A and 102B, a mold 103, a slab support roll 104, and two tundish cars 105A and 105B.

[0010] The ladle 101 is a container for storing molten steel (molten metal). The two tundishes 102A and 102B are each configured to store the molten steel flowing out from the nozzle 101a provided on the bottom wall of the ladle 101 while being located below the ladle 101.

[0011] The mold 103 is disposed on the floor surface FL. The mold 103 is configured to form the molten metal flowing out from the nozzles 102a provided on the bottom walls of the tundishes 102A and 102B into a predetermined shape while cooling it in a state where the tundishes 102A and 102B are located above the mold 103. The strand support rolls 104 are configured to convey the slab S drawn out from the mold 103 while cooling it. Note that the continuous casting facility 100 may be a multi-strand continuous casting facility 100 in which a plurality of nozzles 102a are provided on the bottom walls of the tundishes 102A and 102B. In this case, each nozzle 102a is disposed in the corresponding opening 103a of the mold 103.

[0012] The tundish cars 105A and 105B are each configured to hold the tundishes 102A and 102B. The tundish cars 105A and 105B each include a plurality of wheels 105a configured to be able to travel on the rails RW1 and RW2 provided on the floor surface FL. As illustrated in FIGS. 2 and 3, the rails RW1 and RW2 may each linearly extend along a predetermined direction (the left-right direction in FIGS. 2 and 3) such that one end is located near the mold 103 and the other end is located away from the mold 103.

[0013] As illustrated in FIG. 2, the tundish car 105A (the first device, the first traveling carriage) is capable of traveling between the casting position P1 (the first position) directly above the mold 103 and the maintenance position P2 (the second position) away from the mold 103 while holding the tundish 102A (the first device, the first tundish). That is, the tundish car 105A is configured to be movable with the rail RW1 extending between the casting position P1 and the maintenance position P2 as a movement path MP1 (the first movement path).

[0014] As illustrated in FIG. 3, the tundish car 105B (second device, second carriage) can travel between a casting position P1 (third position) directly above the mold 103 while holding the tundish 102B (second device, second tundish), and a maintenance position P3 (fourth position) away from the mold 103. That is, the tundish car 105B is configured to be movable along a rail RW2 extending between the casting position P1 and the maintenance position P3 as a movement path MP2 (second movement path).

[0015] In the continuous casting facility 100 illustrated in FIGS. 1 to 3, the casting position P1 of the tundish car 105A and the casting position P1 of the tundish car 105B are both directly above the mold 103, so they are at substantially the same position. On the other hand, as illustrated in FIGS. 2 and 3, the maintenance position P2 of the tundish car 105A is located to the left of the mold 103, and the maintenance position P3 of the tundish car 105B is located to the right of the mold 103. That is, in the continuous casting facility 100 illustrated in FIGS. 1 to 3, the maintenance position P2 of the tundish car 105A and the maintenance position P3 of the tundish car 105B are at different positions.

[0016] [Fence device] As illustrated in FIGS. 1 to 3, the continuous casting facility 100 is substantially entirely surrounded by a fence device 10. Thereby, during casting by the continuous casting facility 100, the operator OP cannot approach the continuous casting facility 100, so the safety of the operator OP is ensured.

[0017] As illustrated in FIGS. 2 and 3, the protective fence device 10 includes a fixed fence 11, movable fences 12A and 12B, and detection units 13Aa, 13Ab, 13Ba, and 13Bb. The fixed fence 11 entirely surrounds the continuous casting facility 100 except for the areas in front of the maintenance positions P2 and P3, and is fixed to the floor surface FL. In other words, the fixed fence 11 includes the entrance / exit E1 (the first entrance / exit) at the position in front of the maintenance position P2. The fixed fence 11 includes the entrance / exit E2 (the second entrance / exit) at the position in front of the maintenance position P3.

[0018] The movable fences 12A and 12B (movable fence parts) are configured to change the prohibited entry range and the allowable entry range within the fixed fence 11 as they move. Specifically, as illustrated in FIG. 3, the movable fence 12A (the first movable fence) is configured to be movable between a position closing the entrance / exit E1 allowing access to the tundish 102A and the tundish car 105A and a position closing the movement path MP1. The movable fence 12B (the second movable fence) is configured to be movable between a position closing the entrance / exit E2 allowing access to the tundish 102B and the tundish car 105B and a position closing the movement path MP2 as illustrated in FIG. 2.

[0019] The movable fence 12A may be attached to the fixed fence 11 in the vicinity of the entrance / exit E1 so as to be capable of swivel movement. The movable fence 12B may be attached to the fixed fence 11 in the vicinity of the entrance / exit E2 so as to be capable of swivel movement. The movable fences 12A and 12B may be configured to be stretchable in their longitudinal directions. In this case, since the movable fences 12A and 12B can be stretched or contracted as needed, it is possible to enhance the mobility of the movable fences 12A and 12B during movement (swiveling).

[0020] The detection units 13Aa and 13Ab are configured to detect the locked state (open / closed state) of the movable gate 12A. For example, the detection units 13Aa and 13Ab may be configured to be able to lock and unlock the movable gate 12A electromagnetically. As illustrated in FIG. 3, the detection unit 13Aa may be arranged on the fixed gate 11 so as to face the tip of the movable gate 12A in a state where the space between the casting position P1 and the maintenance position P2 is closed. As illustrated in FIG. 2, the detection unit 13Ab may be arranged on the fixed gate 11 so as to face the tip of the movable gate 12A in a state where the entrance / exit E1 is closed.

[0021] The detection units 13Ba and 13Bb are configured to detect the locked state (open / closed state) of the movable gate 12B. For example, the detection units 13Ba and 13Bb may be configured to be able to lock and unlock the movable gate 12B electromagnetically. As illustrated in FIG. 2, the detection unit 13Ba may be arranged on the fixed gate 11 so as to face the tip of the movable gate 12B in a state where the space between the casting position P1 and the maintenance position P3 is closed. As illustrated in FIG. 3, the detection unit 13Bb may be arranged on the fixed gate 11 so as to face the tip of the movable gate 12B in a state where the entrance / exit E2 is closed.

[0022] When the detection units 13Aa, 13Ab, 13Ba, and 13Bb detect that the movable gates 12A and 12B are in a predetermined position (for example, the open / closed states of the entrances / exits E1 and E2 or the open / closed states of the movement paths MP1 and MP2), a control unit (controller) (not shown) may, based on the detection signal, cause a warning message to be displayed on a display or the like, cause a warning sound to be notified from a speaker or the like, or automatically execute locking and unlocking of the movable gates 12A and 12B.

[0023] [Operation of Movable Gate] The tundish car 105B is stopped at the maintenance position P3. When the tundish car 105A moves between the maintenance position P2 and the casting position P1, as illustrated in FIG. 2, the movable gate 12A closes the entrance / exit E1, and the movable gate 12B closes the movement path MP2 between the casting position P1 and the maintenance position P3. Thereby, the fixed gate 11 and the movable gates 12A and 12B surround the tundish car 105A together with the movement path MP1. In other words, when the tundish car 105A moves, the area R1 (the first area) including the movement path MP1 is surrounded by the fixed gate 11 and the movable gates 12A and 12B together with the tundish car 105A. Therefore, the area R1 is set as a restricted access area where the operator OP cannot enter. On the other hand, since the movable gate 12B extends so as to turn approximately 90° from the entrance / exit E2 and cross the rail RW2, the entrance / exit E2 is open. Therefore, the periphery of the tundish car 105B is set as an accessible area where the operator OP can enter. At this time, maintenance of the tundish 102B and the tundish car 105B may be performed.

[0024] The tundish car 105A is stopped at the maintenance position P2. When the tundish car 105B moves between the maintenance position P3 and the casting position P1, as illustrated in FIG. 3, the movable gate 12B closes the entrance / exit E2, and the movable gate 12A closes the movement path MP1 between the casting position P1 and the maintenance position P2. Thereby, the fixed gate 11 and the movable gates 12A, 12B surround the tundish car 105B together with the movement path MP2. In other words, when the tundish car 105B moves, the area R2 (the second area) including the movement path MP2 is surrounded by the fixed gate 11 and the movable gates 12A, 12B together with the tundish car 105B. Therefore, the area R2 is set as a restricted access area where the operator OP cannot enter. On the other hand, since the movable gate 12A extends so as to turn approximately 90° from the entrance / exit E1 and cross the rail RW1, the entrance / exit E1 is open. Therefore, the area around the tundish car 105A is set as an accessible area where the operator OP can enter. At this time, maintenance of the tundish 102A and the tundish car 105A may be performed.

[0025] [Function] According to the above example, when the tundish car 105A moves, since the area R1 becomes the restricted access area, the movable fence 12B surrounds the area R1 including the movement path MP1 together with the tundish car 105A. Therefore, the operator OP is prevented from approaching the vicinity of the tundish car 105A. On the other hand, when the tundish car 105B moves, since the area R2 becomes the restricted access area, the movable fence 12A surrounds the area R2 including the movement path MP2 together with the tundish car 105B. Therefore, the operator OP is prevented from approaching the vicinity of the tundish car 105B. In this way, since the movable fences 12A and 12B move according to the change in the restricted access area of the operator OP accompanying the movement of the tundish cars 105A and 105B, the restriction on entry into the restricted access area and the opening of the accessible area are flexibly set. Therefore, in the continuous casting facility 100 equipped with the movable tundish cars 105A and 105B, even when the restricted access area of the operator OP changes with the movement of a plurality of devices, it is possible to ensure the safety and workability of the operator OP.

[0026] According to the above example, by the swivel movement of the movable fences 12A and 12B, the opening and closing of the movable fences 12A and 12B can be performed at different positions. Therefore, it is possible to realize the opening and closing at a plurality of positions with a small number of movable fences 12A and 12B.

[0027] According to the above example, according to the locked states of the movable fences 12A and 12B detected by the detection units 13Aa, 13Ab, 13Ba, and 13Bb, the surrounding situations of the areas R1 and R2 by the movable fences 12A and 12B are grasped. In other words, when the detection unit 13Ab detects the closed state of the entrance / exit E1 by the movable fence 12A and the detection unit 13Ba detects the closed state of the movement path MP2 by the movable fence 12B, it can be determined that the area R1 is the restricted access area. When the detection unit 13Aa detects the closed state of the movement path MP1 by the movable fence 12A and the detection unit 13Bb detects the closed state of the entrance / exit E2 by the movable fence 12B, it can be determined that the area R2 is the restricted access area. Therefore, it is possible to determine whether the tundish cars 105A and 105B can move in the areas R1 and R2.

[0028] [Modification Example] The disclosure in this specification should be considered illustrative in all respects and not restrictive. Various omissions, substitutions, changes, etc. may be made to the above examples without departing from the scope and gist of the claims.

[0029] (1) The protective fence device 10 according to the present disclosure may also be applied to the continuous casting facility 100 illustrated in FIGS. 4 to 6. The continuous casting facility 100 according to the examples of FIGS. 4 to 6 (hereinafter sometimes referred to as the "second example") is different from the continuous casting facility 100 according to the examples of FIGS. 1 to 3 (hereinafter sometimes referred to as the "first example") in that it does not include the tundish 102B and the tundish car 105B, but includes a dummy bar insertion device 200. Hereinafter, among the continuous casting facilities 100 according to the second example, the points mainly different from the first example will be described.

[0030] The dummy bar insertion device 200 includes a dummy bar car 201 (second device, second traveling carriage) and at least one dummy bar 202.

[0031] The dummy bar car 201 is configured to hold at least one dummy bar 202. In the second example, the dummy bar car 201 holds two dummy bars 202 according to the number of openings 103a of the mold 103. The dummy bar car 201 includes a plurality of wheels 201a configured to be able to travel on a rail RW3 provided on the floor surface FL. As illustrated in FIGS. 5 and 6, the rail RW3 may extend linearly along a predetermined direction (the vertical direction in FIGS. 5 and 6) such that one end is located near the mold 103 and the other end is located away from the mold 103. The rail RW3 may extend so as to intersect the rail RW1.

[0032] As illustrated in FIGS. 5 and 6, the dummy bar carrier 201 is capable of traveling between the insertion position P1 (the third position) of the dummy bar 202, which is in the vicinity of the mold 103 while holding the dummy bar 202, and the mounting position P4 (the fourth position) of the dummy bar 202, which is away from the mold 103. That is, the dummy bar carrier 201 is configured to be movable along a rail RW3 extending between the insertion position P1 and the mounting position P4 as a movement path MP3 (the second movement path).

[0033] As illustrated in FIGS. 5 and 6, the casting position P1 of the tundish car 105A and the insertion position P1 of the dummy bar 202 are substantially the same position. On the other hand, the maintenance position P2 of the tundish car 105A is located to the left of the mold 103, and the mounting position P4 of the dummy bar 202 is in a location different from the mold 103. That is, in the continuous casting facility 100 according to the second example, the maintenance position P2 of the tundish car 105A and the mounting position P4 of the dummy bar 202 are in different positions.

[0034] The dummy bar 202 held by the dummy bar carrier 201 is inserted into the mold 103 from above the dummy bar carrier 201 before the start of casting in the continuous casting facility 100. Thereby, when the molten steel is poured into the mold 103, the outflow of the molten steel from the mold 103 is prevented. After the start of casting in the continuous casting facility 100, the dummy bar 202 is pulled downward from the mold 103 by a pulling device (not shown) and moves downstream together with the slab S formed in the mold 103 by the slab support roll 104. When the dummy bar 202 reaches a predetermined position on the downstream side, it is conveyed by a conveying device (not shown) to the dummy bar carrier 201 located at the mounting position P4.

[0035] In this way, when casting in the continuous casting facility 100, the dummy bar 202 moves so as to circulate the dummy bar car 201, the mold 103, the slab support roll 104, etc. in one direction. When the dummy bar 202 moves, it needs to bend or flex along the movement path. Therefore, the dummy bar 202 is composed of a plurality of segments connected in a row. Adjacent segments are rotatably connected to each other.

[0036] Similar to the first example, the continuous casting facility 100 according to the second example is also almost entirely surrounded by the protective fence device 10. In the second example, the protective fence device 10 includes a fixed fence 11, movable fences 12A and 12C, and detection units 13Aa, 13Ca, and 13Cb. Hereinafter, the points mainly different from the first example in the protective fence device 10 according to the second example will be described.

[0037] The fixed fence 11 entirely surrounds the continuous casting facility 100 except for the front of the maintenance position P2 and the front of the mold 103, and is fixed to the floor surface FL. In other words, the fixed fence 11 includes the entrance / exit E1 (entrance / exit) at the position in front of the maintenance position P2. The fixed fence 11 includes the opening E3 at the position in front of the mold 103.

[0038] The movable fence 12A (movable fence part, first movable fence) is configured to be movable between a position closing the entrance / exit E1 (see FIG. 5) and a position opening the entrance / exit E1 (see FIG. 6). In the second example, the movable fence 12A is configured to slide in its longitudinal direction (the left-right direction in FIGS. 5 and 6), but it may be configured to be expandable and contractible in the longitudinal direction.

[0039] The movable fence 12C (movable fence part, second movable fence) is configured to be movable between a position closing the movement path MP1 (see FIG. 6) and a position closing the movement path MP3 and closing the opening E3 (see FIG. 5). The movable fence 12C may be attached to the fixed fence 11 in the vicinity of the opening E3 so as to be capable of turning. The movable fence 12C may be configured to be expandable and contractible in its longitudinal direction.

[0040] As illustrated in FIG. 5, the detection unit 13Aa may be disposed on the fixed fence 11 so as to face the tip (the right end in FIG. 5) of the movable fence 12A in a state where the entrance / exit E1 is closed.

[0041] The detection units 13Ca and 13Cb are configured to detect the locked state of the movable fence 12C. For example, the detection units 13Ca and 13Cb may be configured to be able to lock and unlock the movable fence 12C electromagnetically. As illustrated in FIG. 5, the detection unit 13Ca may be disposed on the fixed fence 11 so as to face the tip of the movable fence 12C in a state where the space between the casting position P1 and the mounting position P4 is closed. As illustrated in FIG. 6, the detection unit 13Cb may be disposed on the fixed fence 11 so as to face the tip of the movable fence 12C in a state where the space between the casting position P1 and the maintenance position P2 is closed.

[0042] When the dummy bar car 201 stops at the mounting position P4 and the tundish car 105A moves between the maintenance position P2 and the casting position P1, as illustrated in FIG. 5, the movable fence 12A closes the entrance / exit E1 and the movable fence 12C closes the movement path MP3 between the casting position P1 and the mounting position P4. Thereby, the fixed fence 11 and the movable fences 12A and 12C surround the tundish car 105A together with the movement path MP1, and the fixed fence 11 and the movable fence 12C surround the dummy bar car 201. In other words, when the tundish car 105A moves, the area R1 (the first area) including the movement path MP1 is surrounded by the fixed fence 11 and the movable fences 12A and 12C together with the tundish car 105A. Further, when the dummy bar car 201 stops, the area R3 on the mounting position P4 side from the middle between the casting position P1 and the mounting position P4 is surrounded by the fixed fence 11 and the movable fence 12C together with the dummy bar car 201. Therefore, the areas R1 and R3 are set as restricted areas where the operator OP cannot enter.

[0043] The tundish car 105A is stopped at the maintenance position P2. When the dummy bar car 201 moves between the mounting position P4 and the casting position P1, as illustrated in FIG. 6, the movable gate 12A opens the entrance / exit E1, and the movable gate 12C closes the movement path MP1 between the casting position P1 and the maintenance position P2. As a result, the fixed gate 11 and the movable gates 12A and 12C surround the dummy bar car 201 together with the movement path MP3. In other words, when the dummy bar car 201 moves, the area R4 (the second area) including the movement path MP3 is surrounded by the fixed gate 11 and the movable gates 12A and 12C together with the dummy bar car 201. Therefore, the area R4 is set as a restricted access area where the operator OP cannot enter. On the other hand, since the entrance / exit E1 is open, the surrounding of the tundish car 105A is set as an accessible area where the operator OP can enter. At this time, as illustrated in FIG. 6, the ladle 101 may move to a position away from the mold 103, and the dummy bar 202 may be inserted from the dummy bar car 201 into the opening 103a of the mold 103. Further, maintenance of the tundish 102A and the tundish car 105A may be performed.

[0044] As described above, in the continuous casting facility 100 including the movable tundish car 105A and the dummy bar car 201, even when the restricted access area for the operator OP changes with the movement of a plurality of devices, it is possible to ensure the safety and workability of the operator OP.

[0045] (2) The protective fence device 10 according to the present disclosure may also be applied to the continuous casting facility 100 illustrated in FIGS. 7 to 9. The continuous casting facility 100 according to the example of FIGS. 7 to 9 (hereinafter sometimes referred to as the "third example") is different from the continuous casting facility 100 according to the first example in that it further includes a dummy bar insertion device 200. Since the configuration of the dummy bar insertion device 200 is the same as that of the continuous casting facility 100 according to the second example, the description thereof is omitted.

[0046] Similar to the first example, the continuous casting facility 100 according to the third example is also almost entirely surrounded by the protective fence device 10. In the third example, the protective fence device 10 includes a fixed fence 11, movable fences 12A to 12D, and detection units 13Aa, 13Ba, 13Ca, 13Cb, 13Da, and 13Db. Hereinafter, the points that are mainly different from the first example among the protective fence devices 10 according to the third example will be described.

[0047] The fixed fence 11 entirely surrounds the continuous casting facility 100 except for the front of the maintenance positions P2 and P3 and the front of the mold 103, and is fixed to the floor surface FL. In other words, the fixed fence 11 includes the entrance / exit E1 (entrance / exit) at the position in front of the maintenance position P2. The fixed fence 11 includes the entrance / exit E2 (second entrance / exit) at the position in front of the maintenance position P3. The fixed fence 11 includes the opening E3 at the position in front of the mold 103.

[0048] The movable fence 12A (movable fence part) is configured to be movable between a position closing the entrance / exit E1 (see FIGS. 7 and 8) and a position opening the entrance / exit E1 (see FIG. 9). In the third example, the movable fence 12A is configured to slide in its longitudinal direction (the left-right direction in FIGS. 7 to 9), but it may be configured to be expandable and contractible in the longitudinal direction.

[0049] The movable fence 12B (movable fence part) is configured to be movable between a position closing the entrance / exit E2 (see FIGS. 7 and 9) and a position opening the entrance / exit E2 (see FIG. 8). In the third example, the movable fence 12B is configured to slide in its longitudinal direction (the left-right direction in FIGS. 7 to 9), but it may be configured to be expandable and contractible in the longitudinal direction.

[0050] The movable shutter 12C (movable shutter section) is configured to be movable between a position closing the movement path MP1 (see FIG. 9) and a position closing the movement path MP3 together with the movable shutter 12D and closing the opening E3 (see FIGS. 7 and 8). The movable shutter 12C may be attached to the fixed shutter 11 in the vicinity of the opening E3 so as to be capable of turning movement. The movable shutter 12C may be configured to be stretchable in its longitudinal direction.

[0051] The movable shutter 12D (movable shutter section) is configured to be movable between a position closing the movement path MP2 (see FIG. 9) and a position closing the movement path MP3 together with the movable shutter 12C and closing the opening E3 (see FIGS. 7 and 8). The movable shutter 12D may be attached to the fixed shutter 11 in the vicinity of the opening E3 so as to be capable of turning movement. The movable shutter 12D may be configured to be stretchable in its longitudinal direction.

[0052] As illustrated in FIG. 7, the detection unit 13Aa may be disposed on the fixed shutter 11 so as to face the tip (the right end in FIG. 7) of the movable shutter 12A in a state where the entrance / exit E1 is closed. As illustrated in FIG. 7, the detection unit 13Ba may be disposed on the fixed shutter 11 so as to face the tip (the left end in FIG. 7) of the movable shutter 12B in a state where the entrance / exit E2 is closed.

[0053] The detection units 13Ca and 13Cb are configured to detect the locked state of the movable shutter 12C. For example, the detection units 13Ca and 13Cb may be configured to be able to lock and unlock the movable shutter 12C electromagnetically. As illustrated in FIGS. 7 to 9, the detection unit 13Ca may be disposed at the tip of the movable shutter 12C. As illustrated in FIGS. 7 and 8, when the tips of the movable shutters 12C and 12D closing between the casting position P1 and the mounting position P4 face each other, the detection unit 13Ca may be configured to cooperate with the detection unit 13Da to lock these movable shutters 12C and 12D. As illustrated in FIG. 9, the detection unit 13Cb may be disposed on the fixed shutter 11 so as to face the tip of the movable shutter 12C in a state where the space between the casting position P1 and the maintenance position P2 is closed.

[0054] The detection units 13Da and 13Db are configured to detect the locked state of the movable gate 12D. For example, the detection units 13Da and 13Db may be configured to be able to lock and unlock the movable gate 12D electromagnetically. The detection unit 13Da may be disposed at the tip of the movable gate 12D as illustrated in FIGS. 7 to 9. As illustrated in FIGS. 7 and 8, the detection unit 13Da may be configured to cooperate with the detection unit 13Ca to lock the movable gates 12C and 12D when the tips of the movable gates 12C and 12D in the closed state between the casting position P1 and the mounting position P4 face each other. The detection unit 13Db may be disposed on the fixed gate 11 so as to face the tip of the movable gate 12D in the closed state between the casting position P1 and the maintenance position P3 as illustrated in FIG. 9.

[0055] When the tundish car 105B stops at the maintenance position P3 and the dummy bar car 201 stops at the mounting position P4, when the tundish car 105A moves between the maintenance position P2 and the casting position P1, as illustrated in FIG. 7, the movable gates 12A and 12B close the entrances and exits E1 and E2 respectively, and the movable gates 12C and 12D close the movement path MP3 between the casting position P1 and the mounting position P4. Thereby, the fixed gate 11 and the movable gates 12A to 12D surround the tundish car 105A together with the movement path MP1. In other words, when the tundish car 105A moves, the region R1 including the movement path MP1 is surrounded by the tundish car 105A together with the fixed gate 11 and the movable gates 12A to 12D. Further, when the dummy bar car 201 stops, the region R3 on the mounting position P4 side from the middle between the casting position P1 and the mounting position P4 is surrounded by the dummy bar car 201 together with the fixed gate 11 and the movable gates 12C and 12D. Therefore, the regions R1 and R3 are set to restricted areas where the operator OP cannot enter.

[0056] The tundish car 105A stops at the maintenance position P2, and the dummy bar car 201 stops at the loading position P4. Even when the tundish car 105B moves between the maintenance position P3 and the casting position P1, the movable gates 12A and 12B close the entrances and exits E1 and E2 respectively, and the movable gates 12C and 12D may close the movement path MP3 between the casting position P1 and the loading position P4, as described above. Thereby, the fixed gate 11 and the movable gates 12A to 12D surround the tundish car 105B together with the movement path MP2. In other words, when the tundish car 105B moves, the area R1 including the movement path MP2 is surrounded by the fixed gate 11 and the movable gates 12A to 12D together with the tundish car 105B.

[0057] When the tundish cars 105A and 105B are stopped, as illustrated in FIG. 8, the movable gates 12A and 12B may open the entrances and exits E1 and E2 respectively. Therefore, the area around the tundish cars 105A and 105B is set to an accessible range where the operator OP can enter. Also, when the dummy bar car 201 stops, the area R3 is surrounded by the fixed gate 11 and the movable gates 12C and 12D together with the dummy bar car 201. Therefore, the area R3 is set to a restricted access range where the operator OP cannot enter. At this time, maintenance of the tundish 102A and the tundish car 105A may be performed, or maintenance of the tundish 102B and the tundish car 105B may be performed. Although not shown, at least one of the movable gates 12A and 12B may close the entrances and exits E1 and E2.

[0058] The tundish cars 105A and 105B are each stopped at the maintenance positions P2 and P3. When the dummy bar car 201 moves between the loading position P4 and the casting position P1, as illustrated in FIG. 9, the movable gates 12A and 12B each open the entrances and exits E1 and E2, and the movable gate 12C closes the movement path MP1 between the casting position P1 and the maintenance position P2, while the movable gate 12D closes the movement path MP2 between the casting position P1 and the maintenance position P3. Thereby, the fixed gate 11 and the movable gates 12C and 12D surround the dummy bar car 201 together with the movement path MP3. In other words, when the dummy bar car 201 moves, the area R4 including the movement path MP3 is surrounded by the fixed gate 11 and the movable gates 12C and 12D together with the dummy bar car 201. Therefore, the area R4 is set as a restricted access area where the operator OP cannot enter. On the other hand, since the entrances and exits E1 and E2 are open, the surroundings of the tundish cars 105A and 105B are set as an accessible area where the operator OP can enter. At this time, as illustrated in FIG. 9, the ladle 101 may move to a position away from the mold 103, and the dummy bar 202 may be inserted from the dummy bar car 201 into the opening 103a of the mold 103. Also, at this time, maintenance of the tundish 102A and the tundish car 105A may be performed, or maintenance of the tundish 102B and the tundish car 105B may be performed. Although not shown, at least one of the movable gates 12A and 12B may close the entrances and exits E1 and E2.

[0059] As described above, in the continuous casting facility 100 including the movable tundish cars 105A and 105B and the dummy bar car 201, even when the restricted access area for the operator OP changes with the movement of the plurality of devices, it is possible to ensure the safety and workability of the operator OP.

[0060] (3) The protective fence device 10 according to the present disclosure may also be applied to the continuous casting facility 100 illustrated in FIGS. 10 to 12. Since the continuous casting facility 100 according to the example of FIGS. 10 to 12 (hereinafter, may be referred to as the "fourth example") is the same as the continuous casting facility 100 according to the third example, the description thereof will be omitted.

[0061] Similar to the third example, the continuous casting facility 100 according to the fourth example is also substantially entirely surrounded by the protective fence device 10. In the fourth example, the protective fence device 10 is different from the third example in that the configurations of the movable fences 12A and 12B are the same as those in the first example. That is, the movable fence 12A is configured to be movable between a position closing the access opening E1 allowing access to the tundish 102A and the tundish car 105A (see FIG. 10) and a position closing the movement path MP1 (see FIG. 11). The movable fence 12B is configured to be movable between a position closing the access opening E2 allowing access to the tundish 102B and the tundish car 105B (see FIG. 11) and a position closing the movement path MP2 (see FIG. 10).

[0062] Also, in the fourth example, the protective fence device 10 includes detection units 13Aa, 13Ab, 13Ba, 13Bb, 13Ca, 13Cb, 13Da, and 13Db. Since the configurations of the detection units 13Aa, 13Ab, 13Ba, and 13Bb are the same as those in the first example, the description thereof will be omitted. Since the configurations of the detection units 13Ca, 13Cb, 13Da, and 13Db are the same as those in the third example, the description thereof will be omitted.

[0063] The dummy bar car 201 is stopped at the mounting position P4. When the tundish car 105A moves between the maintenance position P2 and the casting position P1, as illustrated in FIG. 10, the movable gate 12A closes the entrance / exit E1, the movable gate 12B closes the movement path MP2 between the casting position P1 and the maintenance position P3, and the movable gates 12C and 12D close the movement path MP3 between the casting position P1 and the mounting position P4. Thereby, the fixed gate 11 and the movable gates 12A to 12D surround the tundish car 105A together with the movement path MP1, and the fixed gate 11 and the movable gates 12C and 12D surround the dummy bar car 201. In other words, when the tundish car 105A moves, the area R1 including the movement path MP1 is surrounded by the fixed gate 11 and the movable gates 12A to 12D together with the tundish car 105A. Further, when the dummy bar car 201 is stopped, the area R3 on the mounting position P4 side from the middle between the casting position P1 and the mounting position P4 is surrounded by the fixed gate 11 and the movable gates 12C and 12D together with the dummy bar car 201. Therefore, the areas R1 and R3 are set as restricted areas where the operator OP cannot enter. On the other hand, since the movable gate 12B extends so as to turn approximately 90° from the entrance / exit E2 and cross the rail RW2, the entrance / exit E2 is open. Therefore, the area around the tundish car 105B is set as an accessible area where the operator OP can enter. At this time, maintenance of the tundish 102B and the tundish car 105B may be performed.

[0064] The dummy bar car 201 is stopped at the mounting position P4. When the tundish car 105B moves between the maintenance position P2 and the casting position P1, as illustrated in FIG. 11, the movable gate 12B closes the entrance / exit E2, the movable gate 12A closes the movement path MP1 between the casting position P1 and the maintenance position P2, and the movable gates 12C and 12D close the movement path MP3 between the casting position P1 and the mounting position P4. Thereby, the fixed gate 11 and the movable gates 12A to 12D surround the tundish car 105b together with the movement path MP2, and the fixed gate 11 and the movable gates 12C and 12D surround the dummy bar car 201. In other words, when the tundish car 105B moves, the area R2 including the movement path MP2 is surrounded by the fixed gate 11 and the movable gates 12A to 12D together with the tundish car 105B. Also, when the dummy bar car 201 is stopped, the area R3 on the mounting position P4 side from the middle between the casting position P1 and the mounting position P4 is surrounded by the fixed gate 11 and the movable gates 12C and 12D together with the dummy bar car 201. Therefore, the areas R2 and R3 are set as restricted areas where the operator OP cannot enter. On the other hand, since the movable gate 12A extends so as to turn approximately 90° from the entrance / exit E1 and cross the rail RW2, the entrance / exit E1 is open. Therefore, the area around the tundish car 105A is set as an accessible area where the operator OP can enter. At this time, maintenance of the tundish 102A and the tundish car 105A may be performed.

[0065] The tundish cars 105A and 105B are each stopped at the maintenance positions P2 and P3. When the dummy bar car 201 moves between the mounting position P4 and the casting position P1, as illustrated in FIG. 12, the movable gates 12A and 12B each open the entrances and exits E1 and E2, and the movable gate 12C closes the movement path MP1 between the casting position P1 and the maintenance position P2, and the movable gate 12D closes the movement path MP2 between the casting position P1 and the maintenance position P3. Thereby, the fixed gate 11 and the movable gates 12C and 12D surround the dummy bar car 201 together with the movement path MP3. In other words, when the dummy bar car 201 moves, the area R4 including the movement path MP3 is surrounded by the fixed gate 11 and the movable gates 12C and 12D together with the dummy bar car 201. Therefore, the area R4 is set as a restricted access area where the operator OP cannot enter. On the other hand, since the entrances and exits E1 and E2 are open, the surroundings of the tundish cars 105A and 105B are set as an accessible area where the operator OP can enter. At this time, as illustrated in FIG. 12, the ladle 101 may move to a position away from the mold 103, and the dummy bar 202 may be inserted from the dummy bar car 201 into the opening 103a of the mold 103. Also, at this time, maintenance of the tundish 102A and the tundish car 105A may be performed, or maintenance of the tundish 102B and the tundish car 105B may be performed. Although not shown, at least one of the movable gates 12A and 12B may close the entrances and exits E1 and E2.

[0066] As described above, in the continuous casting facility 100 including the movable tundish cars 105A and the dummy bar car 201, even when the restricted access area for the operator OP changes with the movement of a plurality of devices, it is possible to ensure the safety and workability of the operator OP.

[0067] (4) The protective fence device 10 according to the present disclosure may also be applied to the blast furnace facility 300 illustrated in FIGS. 13 to 15. The blast furnace facility 300 according to the example of FIGS. 13 to 15 (hereinafter sometimes referred to as the "fifth example") includes a blast furnace 301, four tapping troughs 302A to 302D, four working device units U1 to U4, and two cover moving devices 310A and 310B (first device).

[0068] The blast furnace 301 is a device that reduces iron ore to produce hot metal (molten pig iron). In the fifth example, four tapping ports (not shown) are provided at the lower part of the blast furnace 301 according to the number of the tapping troughs 302 and the working device units U.

[0069] The tapping troughs 302A to 302D are configured to allow the hot metal to flow downstream while separating the mixture of hot metal and slag discharged from the tapping ports of the blast furnace 301. Therefore, the upstream portions of the tapping troughs 302A to 302D are located near the respective tapping ports of the blast furnace 301, and the downstream portions of the tapping troughs 302A to 302D are located away from the blast furnace 301. In the fifth example, as illustrated in FIGS. 14 and 15, the four tapping troughs 302A to 302D extend radially from the blast furnace 301.

[0070] The upstream portions of the tapping troughs 302A to 302D include an opening 302a (see FIGS. 13 and 15) with an open upper portion, and are exposed outward from the floor surface FL at the opening 202a. The downstream portions of the tapping troughs 302A to 302D extend below the floor surface FL.

[0071] The working device units U1 to U4 are arranged around the blast furnace 301 so as to generally form a substantially circular shape as a whole. In the examples of FIGS. 14 and 15, the working device units U1 to U4 are arranged in this order clockwise when viewed from above. Specifically, the working device units U1 and U2 are arranged adjacent to each other on the right side of the blast furnace 301. The working device units U3 and U4 are arranged adjacent to each other on the left side of the blast furnace 301. That is, in the examples of FIGS. 14 and 15, the working device unit U1 is located in the upper right of the drawing of the blast furnace 301, the working device unit U2 is located in the lower right of the drawing of the blast furnace 301, the working device unit U3 is located in the lower left of the drawing of the blast furnace 301, and the working device unit U1 is located in the upper left of the drawing of the blast furnace 301.

[0072] The working device units U1 to U4 are respectively arranged in the vicinity of the corresponding casting troughs 302A to 302D. The working device units U1 to U4 each include a tapping hole opening device 320 (second device) and a tapping hole closing device 330 (second device).

[0073] The tapping hole opening device 320 is configured to pierce the refractory that closes the tapping hole of the blast furnace 301 to open the tapping hole at the start of tapping from the blast furnace 301. The tapping hole opening device 320 includes a base portion 321 and a piercing portion 322. The base portion 321 is configured to hold the piercing portion 322 and pivotally move the piercing portion 322 between a position retracted from the tapping hole of the blast furnace 301 (see FIG. 14) and a position facing the tapping hole of the blast furnace 301 (see the working device unit U3 in FIG. 15). The piercing portion 322 is configured to pierce the refractory by driving a rod into the refractory of the tapping hole in a state of facing the tapping hole of the blast furnace 301.

[0074] The taphole closing device 330 is configured to close the taphole of the blast furnace 301 with a mud material when the tapping from the blast furnace 301 is completed. The taphole closing device 330 includes a base portion 331 and a mud gun 332. The base portion 331 is configured to hold the mud gun 332 and pivotally move the mud gun 332 between a position where it retreats from the taphole of the blast furnace 301 (see FIG. 14) and a position facing the taphole of the blast furnace 301 (see the working device unit U1 in FIG. 15). The mud gun 332 is configured to close the taphole by discharging the mud material from the discharge port to the taphole while facing the taphole of the blast furnace 301.

[0075] The cover moving devices 310A and 310B are each configured to cover the openings 202a of the tapholes 302A to 302D through which the molten iron flows from above during tapping from the blast furnace 301. The cover moving device 310A is disposed between the working device unit U1 and the working device unit U2 (between the tapholes 302A and 302B) as illustrated in FIGS. 14 and 15. The cover moving device 310B is disposed between the working device unit U3 and the working device unit U4 (between the tapholes 302C and 302D) as illustrated in FIGS. 14 and 15.

[0076] The cover moving devices 310A and 310B each include a base portion 311 and a taphole cover 312. The base portion 311 is configured to hold the taphole cover 312 and pivotally move the taphole cover 312 between a position where it retreats from the tapholes 302A to 302D (see FIG. 15) and an upper position of the openings 202a of the tapholes 302A to 302D (see the working device units U1 and U3 in FIG. 14). The taphole cover 312 is configured to prevent the molten iron from scattering outward from the opening 202a during tapping from the blast furnace 301.

[0077] Similar to the first example, the blast furnace facility 300 according to the fifth example is also substantially entirely surrounded by the protective fence device 10. In the fifth example, the protective fence device 10 includes a fixed fence 11, movable fences 12A to 12F, and detection units 13A to 13F.

[0078] The fixed fence 11 includes a central fence 11A and side fences 11B, 11C. As illustrated in FIGS. 14 and 15, the central fence 11A extends between the working device units U1, U2 and the working device units U3, U4 and separates them. The side fence 11B is connected to the outer end of the central fence 11A, covers the sides of the working device units U1, U2, and extends to the right of the drawing of the blast furnace 301 so as to expand as it moves away from the blast furnace 301. The side fence 11C is connected to the outer end of the central fence 11A, covers the sides of the working device units U3, U4, and extends to the left of the drawing of the blast furnace 301 so as to expand as it moves away from the blast furnace 301.

[0079] The movable fence 12A is configured to be movable between a position (see FIG. 15) that closes the space between the working device units U1 and U2 and a position (see FIG. 14) that opens the space therebetween. In the fifth example, the movable fence 12A is configured to be expandable and contractible in its longitudinal direction (the left-right direction in FIGS. 14 and 15) between these positions.

[0080] The movable fence 12B is configured to be movable between a position (see FIG. 15) that closes the space between the tip of the side fence 11B located on the side of the working device unit U1 and the outer end of the movable fence 12A and a position (not shown) that opens the space therebetween. In the fifth example, the movable fence 12B is configured to be expandable and contractible in its longitudinal direction (the direction intersecting the tapping trough 302A) between these positions.

[0081] The movable fence 12C is configured to be movable between a position (see FIG. 14) that closes the space between the tip of the side fence 11B located on the side of the working device unit U2 and the outer end of the movable fence 12A and a position (see FIG. 15) that opens the space therebetween. In the fifth example, the movable fence 12C is configured to be expandable and contractible in its longitudinal direction (the direction intersecting the tapping trough 302B) between these positions.

[0082] The movable fence 12D is configured to be movable between a position (see FIG. 15) that closes the space between the working device unit U3 and the working device unit U4 and a position (see FIG. 14) that opens the space therebetween. In the fifth example, the movable fence 12D is configured to be stretchable in its longitudinal direction (the left-right direction in FIGS. 14 and 15) between these positions.

[0083] The movable fence 12E is configured to be movable between a position (see FIG. 15) that closes the space between the tip of the side fence 11B located on the side of the working device unit U3 and the outer end of the movable fence 12D and a position (not shown) that opens the space therebetween. In the fifth example, the movable fence 12E is configured to be stretchable in its longitudinal direction (the direction intersecting the milling trough 302C) between these positions.

[0084] The movable fence 12F is configured to be movable between a position (see FIG. 14) that closes the space between the tip of the side fence 11B located on the side of the working device unit U4 and the outer end of the movable fence 12D and a position (see FIG. 15) that opens the space therebetween. In the fifth example, the movable fence 12F is configured to be stretchable in its longitudinal direction (the direction intersecting the milling trough 302D) between these positions.

[0085] The detection units 13A to 13F are each configured to detect the locked state (open / closed state) of the movable fences 12A to 12F. For example, the detection units 13A to 13F may each be configured to be able to magnetically lock and unlock the movable fences 12A to 12F. As illustrated in FIGS. 2 and 3, the detection units 13A to 13F may each be arranged at the tip of the movable fences 12A to 12F.

[0086] The tapping hole opening device 320 and the tapping hole closing device 330 of the working device units U1 and U2 have retreated from the tapping hole of the blast furnace 301. When the tapping trough cover 312 of the cover moving device 310A moves between the tapping trough 302A and the tapping trough 302B, as illustrated in FIG. 14, the movable fence 12A is in an open state, and the movable fences 12B and 12C are in a closed state. Thereby, the fixed fence 11 and the movable fences 12A to 12C surround the cover moving device 310A together with the moving path of the tapping trough cover 312 of the cover moving device 310A. In other words, when the tapping trough cover 312 of the cover moving device 310A moves, the region R5 including the moving path is surrounded by the fixed fence 11 and the movable fences 12A to 12C together with the cover moving device 310A. Therefore, the region R5 is set as a restricted access area where the operator OP cannot enter. As illustrated in FIG. 14, when the tapping hole opening device 320 and the tapping hole closing device 330 of the working device units U3 and U4 have retreated from the tapping hole of the blast furnace 301 and the tapping trough cover 312 of the cover moving device 310B moves between the tapping trough 302C and the tapping trough 302D, similarly to the above, the fixed fence 11 and the movable fences 12D to 12F may surround the cover moving device 310B together with the moving path of the tapping trough cover 312 of the cover moving device 310B.

[0087] The tapping hole opening device 320 of the working device unit U1 has retreated from the tapping hole of the blast furnace 301, and the tapping trough cover 312 of the cover moving device 310A has retreated from the tapping trough 302A. When the mud gun 332 of the tapping hole closing device 330 of the working device unit U1 moves between the retracted position and the facing position of the tapping hole of the blast furnace 301, as illustrated in FIG. 15, the movable fences 12A and 12B are in the closed state. Thereby, the fixed fence 11 and the movable fences 12A and 12B surround the tapping hole closing device 330 together with the moving path of the mud gun 332 of the tapping hole closing device 330 of the working device unit U1. In other words, when the mud gun 332 moves, the area R6 including the moving path is surrounded by the fixed fence 11 and the movable fences 12A and 12B together with the tapping hole closing device 330. Therefore, the area R6 is set as a restricted access area where the operator OP cannot enter. At this time, the movable fence 12C may be in the open state, and the surroundings of the working device unit U2 and the tapping trough 302B may be set as an accessible area where the operator OP can enter. Note that when the mud guns 332 of the tapping hole closing devices 330 of the working device units U2 to U4 move between the retracted position and the facing position of the tapping hole of the blast furnace 301, similarly to the above, the area including the moving path of the mud gun 332 may be surrounded by the fixed fence 11 and the movable fences 12A, 12C to 12F.

[0088] The tapping hole closing device 330 of the working device unit U3 has retreated from the tapping hole of the blast furnace 301, the tapping trough cover 312 of the cover moving device 310B has retreated from the tapping trough 302C, and when the drilling part 322 of the tapping hole opening device 320 of the working device unit U3 moves between the retracted position and the facing position of the tapping hole of the blast furnace 301, as illustrated in FIG. 15, the movable fences 12D and 12E are in the closed state. Thereby, the fixed fence 11 and the movable fences 12D and 12E surround the tapping hole opening device 320 of the working device unit U3 together with the moving path of the drilling part 322 of the tapping hole opening device 320. In other words, when the drilling part 322 moves, the area R7 including the moving path is surrounded by the fixed fence 11 and the movable fences 12D and 12E together with the tapping hole opening device 320. Therefore, the area R7 is set as a restricted access area where the operator OP cannot enter. At this time, the movable fence 12F is in the open state, and the surroundings of the working device unit U4 and the tapping trough 302D may be set as an accessible area where the operator OP can enter. Note that when the drilling part 322 of the tapping hole opening devices 320 of the working device units U1, U2, and U4 moves between the retracted position and the facing position of the tapping hole of the blast furnace 301, similarly to the above, the area including the moving path of the drilling part 322 may be surrounded by the fixed fence 11 and the movable fences 12A to 12D and 12F.

[0089] As described above, in the blast furnace facility 300 including the movable working device units U1 to U4 and the cover moving devices 310A and 310B, even when the restricted access area for the operator OP changes with the movement of the plurality of devices, it is possible to ensure the safety and workability of the operator OP.

[0090] (5) In the above, an example of applying the protective fence device 10 according to the present disclosure to the continuous casting facility 100 and the blast furnace facility 300 has been described. However, the protective fence device 10 according to the present disclosure may be applied to a manufacturing facility in which a plurality of devices are movable. Also in this case, when each device moves, the area including the movement path of each device is surrounded by the protective fence device 10 by the movement of the movable fence corresponding to each area. Therefore, even when the prohibited entry range for the operator varies with the movement of the plurality of devices, it is possible to ensure the safety and workability of the operator. In particular, since the prohibited entry range corresponding to the device in motion is preset by the protective fence device 10 according to the present disclosure, in the case of heavy objects for which it is difficult for a plurality of movable devices to stop instantaneously, it is possible to more effectively prevent contact between the operator OP and the device.

[0091] [Other examples] Example 1. An example of a protective fence device is a protective fence device installed to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position. An example of the protective fence device includes a movable fence configured to surround a first area including the first movement path together with the first device when the first device moves, and to surround a second area including the second movement path together with the second device when the second device moves. In this case, when the first device moves, since the first area becomes a restricted access area, the movable fence surrounds the first area including the first movement path together with the first device. Therefore, an operator is prevented from approaching the vicinity of the first device. On the other hand, when the second device moves, since the second area becomes a restricted access area, the movable fence surrounds the second area including the second movement path together with the second device. Therefore, an operator is prevented from approaching the vicinity of the second device. In this way, since the movable fence moves according to changes in the restricted access area for the operator accompanying the movement of a plurality of devices, the restriction on entry into the restricted access area and the opening of the accessible area can be set flexibly. Therefore, in a manufacturing facility including a plurality of movable devices, even when the restricted access area for the operator changes as the plurality of devices move, it is possible to ensure the safety and workability of the operator.

[0092] Example 2. In the apparatus of Example 1, the manufacturing facility is a continuous casting facility, and includes a first and a second tundish configured to store molten metal, and a mold configured to form a molten metal supplied from each of the first and second tundishes into a predetermined shape while cooling it. The first apparatus is a first traveling carriage configured to hold the first tundish and be capable of traveling along a first movement path between a position above the mold (P1), which is the first position, and a position away from the mold (P2), which is the second position. The second apparatus may be a second traveling carriage configured to hold the second tundish and be capable of traveling along a second movement path between a position above the mold (P3), which is the third position, and a position away from the mold (P4), which is the fourth position. In this case, even when the restricted access range for the operator varies with the traveling of the plurality of traveling carriages in the continuous casting facility, it is possible to ensure the safety and workability of the operator.

[0093] Example 3. In the apparatus of Example 2, the movable gate portion may include a first movable gate configured to be pivotally movable between a position closing the first movement path and a position closing a first entrance / exit enabling access to the first apparatus, and a second movable gate configured to be pivotally movable between a position closing the second movement path and a position closing a second entrance / exit enabling access to the second apparatus. In this case, by the pivotal movement of the first and second movable gates, the first and second movable gate portions can be opened and closed at different positions. Therefore, it is possible to realize the opening and closing at a plurality of positions with a smaller number of movable gate portions.

[0094] Example 4. In the apparatus of Example 1, the manufacturing facility is a continuous casting facility, and includes a tundish configured to store molten metal, and a mold configured to form the molten metal supplied from the tundish into a predetermined shape while cooling it. The first apparatus is a first traveling carriage configured to hold the tundish and be capable of traveling along a first movement path between above the mold at a first position (P1) and a position away from the mold at a second position (P2). The second apparatus may be a second traveling carriage configured to hold a dummy bar capable of closing the opening of the mold and be capable of traveling along a second movement path between above the mold at a third position (P3) and a position away from the mold at a fourth position (P4). In this case, in the continuous casting facility, even when the restricted access range for the operator varies with the traveling of the plurality of traveling carriages, it is possible to ensure the safety and workability of the operator.

[0095] Example 5. In the apparatus of Example 4, the movable fence portion may include a first movable fence configured to open and close an entrance / exit enabling access to the first apparatus, and a second movable fence configured to be capable of swinging between a position closing the first movement path and a position closing the second movement path. In this case, by the swinging movement of the second movable fence, it is possible to open and close the movement paths at different positions with one movable fence. Therefore, it is possible to realize the opening and closing at a plurality of positions with a small number of movable fences.

[0096] Example 6. In the apparatus of Example 1, the manufacturing facility is a blast furnace facility, and includes a blast furnace, and first and second tapping troughs extending horizontally from the blast furnace. The first apparatus is a cover moving device including a tapping trough cover movable along a first movement path between above the first tapping trough at a first position and above the second tapping trough at a second position. The second apparatus may be a tapping hole closing device or a tapping hole opening device movable along a second movement path between near the tapping hole of the blast furnace at a third position and a position away from the tapping hole of the blast furnace at a fourth position. In this case, in the blast furnace facility, even when the restricted access range for the operator varies with the traveling of the plurality of traveling carriages, it is possible to ensure the safety and workability of the operator.

[0097] Example 7. In the device of Example 6, the movable gate portion may include a first movable gate configured to be able to open and close an entrance / exit enabling access to the first device, and a second movable gate configured to be able to open and close the first movement path.

[0098] Example 8. Any of the devices of Examples 1 to 7 may further include a detection unit configured to detect the locked state of the movable gate portion. In this case, according to the locked state detected by the detection unit, the surrounding situation of the first area or the second area by the movable gate portion can be grasped. Therefore, it becomes possible to determine whether the first device or the second device can move.

[0099] Example 9. In any of the devices of Examples 1 to 8, the movable gate portion may be configured to be telescopic. In this case, since the movable gate portion can be telescoped as needed, it becomes possible to enhance the mobility of the movable gate portion during movement.

Industrial Applicability

[0100] According to the protective fence device according to the present disclosure, even when the prohibited entry range for workers changes as the plurality of devices move in a manufacturing facility including a plurality of movable devices, it is possible to ensure the safety and workability of the workers.

Explanation of Signs

[0101] 10... Protection fence device, 12A... Movable fence (movable fence part, first movable fence), 12B... Movable fence (movable fence part, second movable fence), 12C... Movable fence (movable fence part, second movable fence), 13A~13F, 13Aa, 13Ab, 13Ba, 13Bb, 13Ca, 13Cb, 13Da, 13Db... Detection part, 100... Continuous casting equipment (manufacturing equipment), 102A... Tundish (first device, first tundish), 102B... Tundish (second device, second tundish), 103... Mold, 103a... Opening, 105A... Tundish car (first device, first traveling carriage), 105B... Tundish car (second device, second traveling carriage), 200... Dummy bar insertion device, 201... Dummy bar car (second device, second traveling carriage), 202... Dummy bar, 300... Blast furnace equipment, 301... Blast furnace, 302A... Tapping trough (first tapping trough), 302B... Tapping trough (second tapping trough), 310A, 310B... Cover moving device (first device), 312... Tapping trough cover, 320... Tapping hole opening device (second device), 330... Tapping hole closing device (second device), E1... Entrance / exit (entrance / exit, first entrance / exit), E2... Entrance / exit (second entrance / exit), MP1... Movement path (first movement path), MP2... Movement path (second movement path), OP... Operator, P1... Casting position (first position, third position), P2... Maintenance position (second position), P3... Maintenance position (fourth position), R1... Area (first area), R2... Area (second area).

Claims

1. A protective fence device installed so as to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position, wherein when the first device moves, a first area including the first movement path is configured to be surrounded together with the first device and the second device is not surrounded, and when the second device moves, a second area including the second movement path is configured to be surrounded together with the second device and the first device is not surrounded, the protective fence device including a movable fence part.

2. A protective fence device installed so as to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position, wherein when the first device moves, it is configured to surround a first area including the first movement path together with the first device, and when the second device moves, it is configured to surround a second area including the second movement path together with the second device, and includes a movable fence part, wherein the manufacturing facility is a continuous casting facility and includes first and second tundishes configured to store molten metal, and a mold configured to form a predetermined shape while cooling the molten metal supplied from each of the first and second tundishes, wherein the first device is a first traveling carriage configured to hold the first tundish and travel along the first movement path between above the mold at the first position and a position away from the mold at the second position, and the second device is a second traveling carriage configured to hold the second tundish and travel along the second movement path between above the mold at the third position and a position away from the mold at the fourth position.

3. The movable fence part includes a first movable fence configured to be pivotally movable between a position closing the first movement path and a position closing a first access opening enabling access to the first device, and a second movable fence configured to be pivotally movable between a position closing the second movement path and a position closing a second access opening enabling access to the second device, the device according to Claim 2. A protective fence device installed so as to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position, comprising a movable fence part configured to surround a first area including the first movement path together with the first device when the first device moves, and configured to surround a second area including the second movement path together with the second device when the second device moves, wherein the manufacturing facility is a continuous casting facility, and includes a tundish configured to store molten metal, and a mold configured to form a predetermined shape while cooling the molten metal supplied from the tundish, wherein the first device is a first traveling carriage configured to hold the tundish and travel along the first movement path between above the mold at the first position and a position away from the mold at the second position, and the second device is a second traveling carriage configured to hold a dummy bar configured to close an opening of the mold and travel along the second movement path between above the mold at the third position and a position away from the mold at the fourth position. **Claim 5** The movable fence part includes a first movable fence configured to be able to open and close an entrance / exit enabling access to the first device, and a second movable fence configured to be able to pivot between a position closing the first movement path and a position closing the second movement path. The device according to claim 4. A protective fence device installed so as to surround a manufacturing facility including a first device movable along a first movement path between a first position and a second position and a second device movable along a second movement path between a third position and a fourth position, comprising a movable fence part configured to surround a first area including the first movement path together with the first device when the first device moves, and configured to surround a second area including the second movement path together with the second device when the second device moves, wherein the manufacturing facility is a blast furnace facility, and includes a blast furnace, and first and second tapholes extending horizontally from the blast furnace. The first device is a cover moving device including a milling trough cover movable along a first movement path between above the first milling trough at the first position and above the second milling trough at the second position. The second device is a device that is a tapping hole closing device or a tapping hole opening device movable along a second movement path between the vicinity of the tapping hole of the blast furnace at the third position and a position away from the tapping hole of the blast furnace at the fourth position.

7. The movable grating part includes a first movable grating configured to be able to open and close an entrance / exit enabling access to the first device, and a second movable grating configured to be able to open and close the first movement path, for the device according to claim 6.

8. The device according to any one of claims 1 to 7, further comprising a detection unit configured to detect the locked state of the movable grating part.

9. The device according to any one of claims 1 to 7, wherein the movable grating part is configured to be expandable and contractible.

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