JP5980749B2 - Anomaly detection device - Google Patents

Description

  The present invention relates to an abnormality detection device that reliably detects a trouble that occurs when a wound wire rod is transported in a loading portion of a strip steel wire rod rolling.

Conventionally, in the hot rolling equipment that continuously rolls steel such as billets to produce a strip wire, a heating furnace, a roughing mill, a finish rolling mill, a pinch roll, and a winder are arranged in order from the upstream side. Has been. The steel material is heated in a heating furnace and continuously rolled, and then becomes a bar wire, and the bar wire is wound into a coil shape or a ring shape by a winder.
A strip steel wire wound in a coil shape (hereinafter referred to as a coil wire) is wound around an axial center (vertical direction) facing the up-down direction and placed on a loading carriage. Then, after reaching a predetermined winding amount, the coil wire is turned over on the loading carriage in a direction in which the axis is oriented in the horizontal direction (sideways). Inverted coil wire is carried to the side of the coil carrier by a loading cart.

  This coil conveying device includes a traveling rail laid on the ceiling and a carrier suspended on the traveling rail and movable along the traveling rail, and the carrier has a rod-like shape extending in the horizontal direction. A hook is provided. Then, the coil transporting device transfers the coil wire from the loading cart to the coil transporting device by lowering the loading cart after inserting the horizontally oriented hook into the center of the inverted coil wire rod. Is possible.

The coil wire transferred to the coil carrier is transported to a lower process line such as an inspection line.
By the way, when transferring the coil wire to the coil conveying device, troubles in the production process may occur because the hook of the carrier is not hooked well on the coil wire.

  For example, FIG. 4A shows a portion of the coil wire material loaded on the upper surface of the loading cart that has been laid down before the winding end portion is inserted into the hook, and has been laid down and dropped downward. This shows the situation where the hook was not hooked. Under such circumstances, even if the hook of the carrier is inserted into the center of the coil wire, the winding end portion is not hooked by the hook, and the coil wire is transferred to the carrier with only the winding end portion hanging down. Become.

  FIG. 4B shows a situation in which the hook of the carrier cannot be inserted to the farthest side of the coil wire due to a setting defect or the like. Under this circumstance, when trying to transfer the coil wire to the coil carrier device, it is impossible to transfer only the winding start portion of the coil wire that is not hooked, and the coil wire is coiled with only the winding start portion hanging down. It will be transferred to a transport device.

As shown in FIGS. 4A and 4B, when the coil wire is transferred under the condition that a part of the coil wire is not hooked on the hook of the carrier, the end of the wire not hooked on the hook The part is unwound and hangs down from the coil conveying device, and the end of the wire rod is caught on another facility or foundation part (floor part) on the floor surface, which may cause trouble.
In addition, when the carrier is driven to the lower process line while the end of the wire is caught, the coil wire is gradually detached from the hook of the carrier, and in the worst case, the coil wire removed from the hook extends over a wide area in the production area. There is a possibility that it will be pulled and cause serious troubles.

For example, a technique disclosed in Patent Document 1 is known as a technique for detecting the trouble of the coil wire hanging down.
The detection device of Patent Document 1 is a device that detects a wire rod that has fallen off from a coil hook, in other words, a catch of the coil wire material on the hook. Specifically, this detection device includes a coil carriage in which a coil wire material is loaded at the bottom of a pit formed substantially vertically downward. Further, a lift for lowering and raising the coil wire is provided inside the pit, and a hook for hooking the coil wire is provided on the lift. Further, the coil wire hung on the hook is raised to the upper part of the pit by a lift and is transported horizontally along the guide rail.

  And this detection device has a metal bar at the opening of the pit, and when a coil wire touches the metal bar, a current is conducted from the power source to the bar, and a buzzer or the like sounds. It has become.

Japanese Utility Model Publication No. 63-138909

  By using the wire hook detection device disclosed in Patent Document 1, it may be possible to detect to some extent the wire that has fallen off from the coil carrier device (coil hook). However, when the hook detection device is used for a long period of time, for example, the metal bar gets stuck or deteriorated due to the wire rod being caught several times on the metal bar, and the reaction of the metal bar becomes worse. In some cases, the catch detection device itself may not operate.

  Therefore, in view of the above-described problems, the present invention stably and reliably detects an abnormal suspension state in which a part of the bar wire is suspended from the coil transport device over a long period of time. An object of the present invention is to provide an anomaly detection device capable of performing the above.

In order to achieve the above object, the following technical means were taken in the abnormality detection apparatus of the present invention.
That is, in the abnormality detection device of the present invention, when the rolled steel wire wound in a coil shape after being rolled is conveyed in a suspended state by the coil conveying device, a part of the above-mentioned steel bar wire hangs down from the coil conveying device. An abnormality detection device for detecting an abnormal suspension state suspended in a state, wherein the detection sensor includes a suspended conductor that is hung downward and to which a voltage is applied, and the coil conveying device on the suspended conductor An abnormality detection unit that detects that a wire rod hanging from the wire contacts and a current caused by the voltage flows and determines that the wire rod is in an abnormally suspended state based on the detected current. To do.

Preferably, the coil conveying device is capable of traveling in a suspended state on a traveling rail disposed above, and the detection sensor hangs downward from a position adjacent to the traveling rail. It is good to be deployed.
Preferably, a weight member that holds the drooping conductor in a state of being stretched in the vertical direction is preferably provided at a lower end portion of the drooping conductor of the detection sensor.

  Preferably, the abnormality detection unit includes a notification unit that notifies the operator of an abnormality when the current is detected.

  According to the abnormality detection device of the present invention, it is possible to stably and reliably detect an abnormal suspension state in which a part of the bar wire is suspended from the coil transport device over a long period of time. it can.

It is a schematic diagram of the rolling line of a strip steel wire. It is an enlarged view of the part from a winding machine to a coil conveyance apparatus. It is the figure which showed the procedure at the time of transferring a wire from a loading cart with respect to a coil conveyance apparatus. (A) has shown the abnormal suspension state when the winding end part falls down, (b) has shown the abnormal suspension state when the winding start part falls down. It is the figure which showed the state at the time of arrangement | positioning of an abnormality detection apparatus, and abnormality detection. It is the figure which showed the electricity supply state at the time of the abnormality detection in an abnormality detection apparatus. It is the figure which showed the arrangement position of the abnormality detection apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the rolling production line 2 provided with the abnormality detection device 1 of the present embodiment will be described.
FIG. 1 shows an outline of a rolling production line 2 for rolling a wire. The rolling production line 2 includes, in order from the upstream side to the downstream side in the material conveying direction, a heating furnace 3 for heating a steel material such as a billet, a rough rolling mill 4, a middle row rolling mill 5, a finishing rolling mill 6, a winding roll The taker 7 (laying head) is arranged in order. Further, a plurality of cooling means 8 for cooling the strip wire W are provided between the intermediate row rolling mill 5 and the winder 7, and wound further downstream on the outlet side of the winder 7. A conveyor 9 for conveying the strip steel wire W is provided.

In the rolling production line 2, the steel material heated in the heating furnace 3 is roughly rolled by passing through the rough rolling mill 4 and the intermediate row rolling mill 5, and then passed through the finish rolling mill 6 to obtain a predetermined cross-sectional shape and diameter. Is rolled into a wire rod having After being rolled by the cooling means 8, the roll-formed wire is wound up in a ring shape by a winder 7 and conveyed downstream by a conveyor 9.
As shown in FIG. 2, a loading cart 10 is arranged on the terminal side of the conveyor 9, and the wire material that has flowed through the conveyor 9 is stacked on the placement surface of the loading cart 10. The loaded wire is wound into a coil shape, and its axis is oriented in the vertical direction. That is, the wire rod conveyed by the conveyor 9 is loaded on the loading carriage 10 as a longitudinal coil wire rod W (hereinafter, the strip wire W wound by a predetermined amount is referred to as a coil wire rod W). The

In the loading cart 10, after the wire rod is wound by a predetermined amount, in other words, after the coil wire rod W reaches a predetermined height, the coil wire rod W is transposed by 90 ° and turned sideways. That is, the axis of the loading cart 10 faces in the horizontal direction.
The coil wire W placed horizontally on the loading carriage 10 is loaded into the coil carrier 11 and conveyed to a lower process line (finishing line) for inspection and shipment.

  As shown in FIG. 2, FIG. 3, and the like, the coil transport device 11 includes a carrier 13 having a hook 12 for hooking the coil wire W on the loading carriage 10, a traveling rail 14 for guiding the carrier 13, have. The carrier 13 is provided with a traveling unit 15 that travels on the traveling rail 14, and the traveling unit 15 enables the carrier 13 to travel along the traveling rail 14.

  The carrier 13 is formed by bending a bar material into a U-shaped or C-shaped shape, and is arranged so that both bent ends are arranged vertically and protrude in the horizontal direction. Further, of the bent ends provided on the carrier 13, the lower end portion is attached so as to face the horizontal direction and is formed as a hook 12, which can be inserted into the central portion of the coil wire W. At the tip of the hook 12, a retaining protrusion 16 for preventing the coil wire W from falling off is provided so as to project upward.

  The traveling rail 14 is a rail member provided so as to cross each strand of the rolling production line 2, and is provided above the floor surface on which the rolling production line 2 is provided, and the carrier 13 described above is suspended. It can be supported. In the present embodiment, the running rail 14 is laid on the ceiling of a building where the rolling production line 2 is provided, and the carrier 13 is deployed in a state of being suspended from the ceiling.

The traveling unit 15 is a member attached to the upper portion of the carrier 13, and can move the carrier 13 along the traveling rail 14. The traveling unit 15 is provided with wheels and gears that can travel on the traveling rail 14, and can travel on the traveling rail 14 by rotationally driving these wheels and gears.
When the coil wire W on the loading carriage 10 described above is transported using the coil transport device 11, the following operation is performed.

That is, as shown to Fig.3 (a), the loading cart 10 in which the coil wire W was mounted in a horizontal state is moved toward the loading position side of the coil conveyance apparatus 11. FIG. At this time, the carrier 13 of the coil transport device 11 is adjusted to a height that can be inserted into the central portion of the coil wire W.
Therefore, when the loading cart 10 is brought close to the coil carrier device 11, the hook 12 of the carrier 13 is inserted to the back of the central portion of the coil wire W as shown in FIG. When the loading carriage 10 is moved downward using the hydraulic pressure, the electric motor or the like with the hook 12 inserted into the coil wire W in this way, the coil wire W is transferred to the carrier 13.

And as shown in FIG.3 (c), the loading carriage 10 which became empty is moved to the direction away from the coil conveyance apparatus 11, and the carrier 13 with which the coil wire W was loaded is moved along the traveling rail 14. FIG. . If it does so, the coil wire W will move and will be conveyed to a lower process line (finishing line).
By the way, in the above-described coil transport device 11, as described in detail in “Background Art”, when the coil wire W is lifted by the coil transport device 11, a part of the coil wire W is caught by the hook 12 of the carrier 13. Trouble may occur due to the absence.

  For example, as shown in FIG. 4A and FIG. 4B, when trying to carry the coil wire W in which either the winding start portion or the winding end portion is not caught by the hook 12 with the coil carrying device 11, the coil The wire W hangs down from the carrier 13, and the hung coil wire W is caught on another facility or a base portion (floor portion), causing trouble. Further, when the carrier 13 is moved along the traveling rail 14 or is started to be transported with the coil wire W while being caught by another facility or foundation part, the coil wire loaded on the carrier 13 in a wound state is used. As W is gradually unwound, the unwound coil wire W is stretched over a wide range of the transfer area, and there is a high possibility of causing a serious trouble such as damage to other equipment.

Therefore, in order to reliably detect that a part of the coil wire W is suspended from the coil carrying device 11, the present inventors have intensively studied and used the abnormality detection device 1 of the present invention. It came to develop.
Hereinafter, details of the abnormality detection apparatus 1 of the present invention will be described.
5 and 6 are diagrams showing the abnormality detection apparatus 1 of the present embodiment.

As shown in FIGS. 5 and 6, the abnormality detection device 1 is configured such that the coil wire W hanging from the coil transport device 11 contacts the detection sensor 17, and a current flows between the coil wire W and the detection sensor 17. The presence of the coil wire W hanging from the carrier 13 is detected (is in an abnormally suspended state).
In this abnormality detection device 1, a detection sensor 17 having a suspended conductor 18 that is suspended and is applied with a voltage is in contact with the suspended conductor 18 and a wire that is suspended from the coil carrier 11, and a current due to the voltage flows. And an abnormality detection unit 19 that determines that the wire is in an abnormally suspended state based on the detected current.

Next, the detection sensor 17 and the abnormality detection part 19 which comprise the abnormality detection apparatus 1 of this invention are demonstrated.
As shown in FIG. 5, the detection sensor 17 supports the drooping conductor 18, the upper end of the drooping conductor 18, an attachment member 20 formed of an insulator, and the drooping conductor 18 provided at the lower end of the drooping conductor 18. And a weight member 21 for holding 18 in a state of being stretched along the vertical direction.

  The drooping conductor 18 is made of a conductive metal wire of several millimeters or the like, and can be freely bent when it contacts the coil wire W. The drooping conductor 18 is provided along the vertical direction so as to hang downward from a ceiling or the like. The above-described mounting member 20 is provided at the upper end of the drooping conductor 18 and the weight member 21 is provided at the lower end. . Therefore, when the coil wire W comes into contact with the drooping conductor 18, the coil wire W can freely swing, and an excessive force can be prevented from acting on the drooping conductor 18. In addition, as shown in FIG. 6, a power source 22 is connected to the upper end side of the drooping conductor 18 slightly below the mounting member 20 via a wiring, and a DC or AC voltage is connected via the power source 22. Has been added.

The mounting member 20 is made of an insulating member such as a ceramic insulator having no electrical conductivity, and can support the upper end of the above-described drooping conductor 18. Specifically, the attachment member 20 is attached to the ceiling of a building where the rolling production line 2 is provided, and the detection sensor 17 is downward from substantially the same height position as the traveling rail 14 attached to the ceiling. It has a structure that hangs down. Further, the mounting member 20 includes a foundation (floor surface), a traveling rail 14,
It is assumed that it does not come into contact with a pillar or the like that supports the traveling rail 14, and current does not flow through the hanging conductor 18 via the attachment member 20.

The weight member 21 is provided at the lower end portion of the drooping conductor 18, and the drooping conductor 18 is pulled downward using the gravity applied to the weight member 21, thereby holding the drooping conductor 18 in a vertically stretched state. It can be done.
Now, as shown in FIG. 6, a voltage of about 12 V is applied to the drooping conductor 18 of the detection sensor 17 by the power source 22 without fear of electric shock. One end side of the power source 22 is connected to the base end side (the side opposite to the weight member 21) of the drooping conductor 18, and the other end side of the power source 22 is connected to the foundation after passing through the abnormality detection unit 19. It is grounded to the part, the running rail 14 and the like. The abnormality detection unit 19 can detect a current resulting from the voltage applied to the drooping conductor 18.

On the other hand, the traveling rail 14 on which the above-described coil transport device 11 travels is also grounded to the base portion or the like.
With the above configuration, when the end portion of the coil wire W that is not hooked on the hook 12 of the carrier 13 hangs down from the coil transport device 11 and comes into contact with the drooping conductor 18 of the detection sensor 17, the power source 22 → the drooping conductor 18 ( Current flows in the order of detection sensor 17) → coiled wire W W → coil carrying device → ground → abnormality detection unit 19 → power supply 22, and this current is detected by the abnormality detection unit 19.

In the abnormality detection unit 19, when a current is detected, the suspended coil wire W is in contact with the suspended conductor 18, in other words, “abnormally suspended state in which a part of the steel wire W is suspended from the coil conveying device. Is determined.
If the notification unit 24 is provided in a control room or the like where the operator is present, when the abnormal detection state is detected by the abnormality detection unit 19, the notification unit 24 is operated to cause troubles with light or sound. It is possible to quickly notify the operator of the occurrence.

  By the way, the detection accuracy of the abnormality detection device 1 described above varies greatly depending on the place where it is installed. Specifically, depending on where the detection sensor 17 is installed in the rolling production line 2, the contact state of the coil wire W with respect to the drooping conductor 18 changes greatly, and the detection accuracy is greatly affected. Hereinafter, the optimum installation position of the detection sensor 17 in the rolling production line 2 will be described.

FIG. 7 shows the moving range of the carrier 13 from the rolling production line 2 to the finishing line.
As shown in FIG. 7, the traveling rail 14 for traveling the carrier 13 extends from the finishing line side, then bends, and is installed so as to pass through a position close to the rolling production line 2, that is, the loading cart 10. It is. The traveling rail 14 near the loading carriage 10 is substantially perpendicular to the conveying direction of the conveyor 9 that conveys the wire taken up by the winder 7. Thereafter, the traveling rail 14 is bent again and extends so as to extend toward the lower process line side. A pillar member 25 that supports the traveling rail 14 and a pillar member 25 that supports the ceiling are provided on the side surface of the traveling rail 14.

  When the arrangement of the traveling rails 14 as shown in FIG. 7 is adopted, the carrier 13 moves from the finishing line side to the “transfer position” located at A in FIG. 7, and the coil wire W is moved at this “transfer position”. Is caught by the carrier 13. Therefore, along the moving direction of the carrier 13, on the upstream side (the upper side in FIG. 7) from the “transfer position”, the wire rod does not hang down, and it is not necessary to install the detection sensor 17 in such a region. Further, it is often difficult to detect the hanging of the wire immediately after the coil wire W is lifted by the hook 12 of the carrier 13.

Therefore, in the arrangement of the traveling rail 14 in FIG. 7, the carrier 13 moves along the traveling rail 14, and the coil wire W that has been unwound from the carrier 13 hangs down to a certain length, and the coiled wire W that hangs down the traveling rail 14. For example, when it is wound around the supporting column member 25, the hanging of the wire is detected. That is, when the coil wire W hanging down to a certain length is wound around the column member 25 described above, the coil wire W is stretched in the vicinity of the column member 25. If the sensor 17 is deployed,
The coil wire W can be reliably brought into contact with the detection sensor 17.

That is, by installing the detection sensor 17 in the vicinity of the column member 25 provided between the above-mentioned “transfer position” and the coil transport device 11, it is possible to reliably detect the sag of the coil wire W. . In the case of this embodiment, the detection sensor 17 is installed at a position about 200 mm away from the column member 25 in the direction of the traveling rail 14.
In summary, the aforementioned “transfer position (A in FIG. 7)”, “column member 25”, and “position of the coil transport device 11 moved to the finishing line (B in FIG. 7)” are connected. By installing the detection sensor 17 on the straight line or in the vicinity of the straight line, it is possible to reliably detect the sag of the coil wire W. When the column member 25 does not exist, the detection sensor 17 is on or near the straight line connecting the “transfer position” and the “coil transporting device 11 moved to the finishing line (B in FIG. 7)”. It is desirable to install.

  By arranging the abnormality detection device 1 at such a position, it is possible to reliably detect an abnormal suspension state in which a part of the bar wire W is suspended from the coil transport device 11. Further, in the abnormality detection device 1 of the present invention, even if the wire hanging from the coil wire W being conveyed contacts the drooping lead 18 with a strong force, the drooping lead 18 receives the strong force, and the abnormality detection device 1 It is possible to prevent the detection sensor 17 from being damaged. Therefore, it is possible to detect the dropping of the wire stably over a long period of time.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. In particular, in the embodiment disclosed this time, matters that are not explicitly disclosed, for example, operating conditions and operating conditions, various parameters, dimensions, weights, volumes, and the like of a component deviate from a range that a person skilled in the art normally performs. Instead, values that can be easily assumed by those skilled in the art are employed.

DESCRIPTION OF SYMBOLS 1 Abnormality detection apparatus 2 Rolling production line 3 Heating furnace 4 Rough rolling mill 5 Intermediate row rolling mill 6 Finishing rolling mill 7 Winding machine (laying head)
DESCRIPTION OF SYMBOLS 8 Cooling means 9 Conveyor 10 Loading cart 11 Coil carrier 12 Hook 13 Carrier 14 Traveling rail 15 Traveling part 16 Retaining protrusion 17 Detection sensor 18 Drooping conductor 19 Abnormality detection part 20 Mounting member 21 Weight member 22 Power supply 24 Notification part 25 Column Member W Strip steel wire (coil wire)

Claims (4)

Abnormal suspension in which a part of the wire rod is suspended in a state where it is hung from the coil conveying device when the rolled wire wound in a coil shape after being rolled is conveyed by the coil conveying device in a suspended state. An anomaly detection device that detects that a state is present,
A detection sensor having a hanging conductor wire that hangs downward and has a voltage applied thereto;
An abnormality detecting unit that detects that a wire rod hanging from the coil conveying device is in contact with the hanging lead wire and a current caused by the voltage flows and determines that the wire is in an abnormally suspended state based on the detected current. When,
An abnormality detection apparatus comprising: The coil conveying device is capable of traveling in a suspended state on a traveling rail disposed above,
The abnormality detection device according to claim 1, wherein the detection sensor is disposed so as to hang downward from a position adjacent to the traveling rail.   3. The abnormality detection according to claim 1, wherein a weight member is provided at a lower end portion of the drooping conductor of the detection sensor to hold the drooping conductor in a stretched state in the vertical direction. apparatus.   The abnormality detection device according to claim 1, wherein the abnormality detection unit includes a notification unit that notifies an operator of an abnormality when the current is detected.