Device for reducing non-planned shutdown of bar rolling line

Abstract

The utility model discloses a device for reducing non-planned shutdown of a bar rolling line, which relates to the technical field and comprises a foot switch, a plug, a socket and a PLC (programmable logic controller). An input point of the PLC is connected to the socket, one side hole of the socket is connected with 24V, and the other side hole of the socket is connected to a point I of the PLC; a contact outgoing line of the foot switch is connected to the plug, and the foot switch is connected to the PLC through the plug and the socket. According to the utility model, the problems of energy consumption and production reduction caused by long non-planned shutdown time of the bar rolling line due to long troubleshooting time of fault abnormal points and inconvenience in wire dismounting and replacement when the foot switch is damaged when the foot switch on the existing bar rolling line breaks down can be solved.

Description

Technical Field

[0001] This utility model relates to the field of steel production and manufacturing, and in particular to a control device for controlling the start and stop of small cooling bed steel chains and other chains on a bar rolling line. Background Technology

[0002] Hot-rolled ribbed steel bars, commonly known as rebar, are widely used in construction projects such as houses, bridges, and roads. During the production of rebar on bar rolling lines, several steel chains and other chains (such as the #4 chain) require frequent start-stop control due to process requirements. Therefore, a PLC connected to a foot switch is used for control. The foot switch is a control method where pressing a pedal on the foot switch drives the mechanism to close its normally open contact or open its normally closed contact. Currently, the connection between the PLC and the foot switch involves directly connecting the PLC's 24V power input point and I-point to the foot switch contact lead wires. Figure 1 As shown, due to the frequent start-stop of steel chains and other chains, the foot switch operates at a high frequency, which often leads to problems such as loose wiring, broken wires, poor contact or damage of switch contacts. When a fault occurs on site, it takes a long time to find the fault point, and it is inconvenient to disconnect and replace the foot switch when it is damaged. Therefore, it is very easy to cause long unplanned downtime of bar rolling lines due to long troubleshooting time, resulting in energy consumption and reduced production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for reducing unplanned downtime of bar rolling lines. It can solve the problem of long unplanned downtime of bar rolling lines due to the long time required to troubleshoot the fault point when the foot switch malfunctions and the inconvenience of disassembling and replacing the damaged foot switch. This leads to energy consumption and reduced production.

[0004] To solve the above problems, the technical solution of this utility model is as follows: This device for reducing unplanned downtime in bar rolling lines includes a foot switch, a plug, a socket, and a PLC; the input point of the PLC is connected to the socket, which is mounted on a frame. The right hole of the socket is connected to 24V, and the left hole is connected to the I point of the PLC; the contact lead of the foot switch is connected to the plug, and the foot switch is connected to the PLC through the connection between the plug and the socket; that is, the foot switch is modified to a plug-in wiring method, and the wiring between the PLC and the foot switch is a socket-type wiring method.

[0005] A more specific solution in the above technical solution is that the foot switch has the specification model YBLT-JDK / 11.

[0006] Furthermore: the specification model of the socket is TG1002Z2S / X.

[0007] Furthermore: the plug's specification model is NEA7-301.

[0008] Furthermore: Two sets of foot switches, one in use and one on standby, are connected to the PLC to control the steel chain and other chains respectively; the foot switches, sockets, and plugs are all of the same specification.

[0009] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0010] By adopting this utility model, when the foot switch malfunctions, there is no need to disconnect the wiring. The entire foot switch can be replaced quickly, reducing processing time and unplanned downtime. It can essentially reduce unplanned downtime caused by foot switch malfunctions to near zero and reduce spare parts consumption. This solves the problem of long unplanned downtime in bar rolling lines caused by foot switch malfunctions, which leads to energy consumption and reduced production. Attached Figure Description

[0011] Figure 1 It is a schematic diagram of the existing electrical control principle and layout;

[0012] Figure 2 This is a schematic diagram of the electrical control principle and layout of this utility model. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0014] like Figure 1 As shown, in the production process of rebar on the bar rolling line, the existing connection between the PLC and the foot switch is that the 24V power input point of the PLC and the I point of the PLC are directly connected to the contact lead of the foot switch. Due to the frequent start and stop of the steel chain and other chains, the foot switch operates at a high frequency and is prone to failure. The whole principle and the resulting impact have been explained in the background technology, and will not be repeated here.

[0015] like Figure 2 Devices for reducing unplanned downtime on bar rolling lines include foot switches, plugs, sockets, and PLCs.

[0016] The PLC's input points are connected to the socket, which is mounted on a rack. The right hole of the socket is connected to 24V, and the left hole is connected to the PLC's input point (I). The foot switch's contact lead is connected to the plug, and the foot switch is connected to the PLC via the plug and socket connection. In other words, the foot switch is modified to a plug-in wiring method, while the wiring between the PLC and the foot switch is a socket-type wiring method. The foot switch's specification is YBLT-JDK / 11; the socket's specification is TG1002Z2S / X; and the plug's specification is NEA7-301.

[0017] like Figure 1 and Figure 2 As shown, two sets of foot switches, one in use and one on standby, are connected to the PLC to control the number of steel chains and chain #4 respectively; the specifications of the foot switches, sockets, and plugs are the same.

[0018] With this invention, when the foot switch malfunctions, there is no need to disconnect the wiring; the plug can be directly unplugged, allowing for quick replacement of the entire foot switch and avoiding unplanned downtime.

Claims

1. A device for reducing unplanned downtime in bar rolling lines, characterized in that: The device includes a foot switch, a plug, a socket, and a PLC. The input point of the PLC is connected to the socket, with one side of the socket connected to 24V and the other side connected to the PLC's input point I. The contact lead of the foot switch is connected to the plug, and the foot switch is connected to the PLC through the plug and the socket.

2. The device for reducing unplanned downtime of bar rolling lines according to claim 1, characterized in that: The foot switch has the model number YBLT-JDK / 11.

3. The apparatus for reducing unplanned downtime of bar rolling lines according to claim 1 or 2, characterized in that: The socket's specifications are TG1002Z2S / X.

4. The device for reducing unplanned downtime of bar rolling lines according to claim 3, characterized in that: The plug's specification model is NEA7-301.

5. The device for reducing unplanned downtime of bar rolling lines according to claim 4, characterized in that: Two sets of foot switches, one in use and one on standby, are connected to the PLC to control the steel chain and other chains respectively. All the foot switches in use and those in standby have the same specifications, all the sockets have the same specifications, and all the plugs have the same specifications.

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