CN211360069U

CN211360069U - Control device for preventing hot rolling roll changing trolley cable from being broken

Info

Publication number: CN211360069U
Application number: CN201921858756.4U
Authority: CN
Inventors: 夏焕梅; 王薄冰; 田普; 王海峰; 宋丽娟
Original assignee: Handan Iron and Steel Group Co Ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Current assignee: Handan Iron and Steel Group Co Ltd; Hangang Group Hanbao Iron and Steel Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-28
Anticipated expiration: 2029-10-31

Abstract

A control device for preventing a hot rolling roll changing trolley cable from being broken belongs to the technical field of hot rolling mill equipment and methods, and is used for preventing a roll changing trolley power cable from being broken. The technical scheme is as follows: the utility model discloses a proximity switch installation cable reel both sides, proximity switch can monitor the change roller dolly operation in-process cable reel rotation condition, and proximity switch prevents to cause the phenomenon emergence that dolly power cable was broken because of the mechanical card of reel hinders in carrying programmable controller with monitoring signal. The utility model discloses simple structure, the preparation is easy, and simple to operate has stopped roll change dolly cable snap accident completely, has improved production efficiency greatly, has higher spreading value in the production line of the same type.

Description

Control device for preventing hot rolling roll changing trolley cable from being broken

Technical Field

The utility model relates to a prevent control device that roll change dolly power cable broke in hot rolling finishing mill and roughing mill roll change operation belongs to hot rolling mill equipment technical field.

Background

The working rolls of the rolling mill of the hot rolling production line are abraded greatly in the high-speed rolling process, the working rolls need to be replaced after each rolling plan is finished, the working rolls are replaced more than 5 times every day, and the high-load and fast-rhythm production of the hot rolling line requires that the roll replacement process is finished efficiently, quickly and automatically, so that the reduction of the fault rate of the roll replacement trolley has great significance for the smooth production of the hot rolling production line. The faults of a roll changing system are mainly concentrated on a cable drum of a roll changing trolley since the hot rolling is put into production, the cable drum stops due to mechanical blocking in the roll changing process for many times, the roll changing trolley continues to move forwards to cause a cable breaking accident, and the cable of the roll changing trolley needs to be changed for 2 hours, so that the normal production of the hot rolling is seriously influenced, and meanwhile, the larger economic loss is caused. At present, a control technology for preventing the roll changing trolley from being broken by tension is lacked in a domestic and foreign hot rolling automatic control system, so that the broken power cable becomes a high accident commonly existing in the roll changing process of a hot rolling production line, and a control device for preventing the hot rolling roll changing trolley from being broken by tension is urgently required to be developed so as to ensure the normal operation of production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a prevent that hot rolling roll change dolly cable from breaking controlling means is provided, this kind of device can prevent to pull up the accident because of the cable that cable drum machinery card hinders and causes at the roll change dolly in-process of marcing, can solve the hot rolling production line effectively and trade the technological problem that the accident height was sent out of system cable and pull up, fills the hot rolling production line and prevents the technical blank in the control field that the cable was pulled up in roll change system.

The technical scheme for solving the technical problems is as follows:

the utility model provides a prevent control device that hot rolling roll-changing dolly cable broke, it includes proximity switch, programmable controller (PLC), and two proximity switches are installed respectively in roll-changing dolly cable drum both sides, and proximity switch is connected with programmable controller (PLC)'s counter module, and programmable controller (PLC)'s signal output part is connected respectively with roll-changing dolly drive arrangement's control end and alarm.

According to the control device for preventing the hot rolling roll changing trolley cable from being broken, the installation positions of the two proximity switches are opposite to each other on the two sides of the circle center of the roll changing trolley cable drum, and the distances between the two proximity switches and the circle center of the roll changing trolley cable drum are respectively 350 mm.

The utility model has the advantages that:

the utility model discloses a proximity switch installation cable reel both sides, proximity switch can carry out effectual control to the change roller dolly operation in-process cable reel rotation condition, and proximity switch prevents to cause the phenomenon emergence of dolly power cable broken because of the mechanical jamming of reel to carry programmable controller (PLC) with monitoring signal.

The utility model discloses simple structure, the preparation is easy, and simple to operate has stopped roll change dolly cable snap accident completely, has improved production efficiency greatly, has higher spreading value in the production line of the same type.

Drawings

Fig. 1 is a schematic structural view of the control device for preventing the cable of the hot rolling roll changing trolley from being broken.

The figures are labeled as follows: roll changing roller way 1, roller way gear 2, rotating pulley 3, reel rotating shaft 4, proximity switch 5, cable reel 6 and trolley power cable 7.

Detailed Description

The utility model discloses a prevent that hot rolling roll-changing dolly cable from breaking controlling means includes proximity switch 5, programmable controller (PLC).

Fig. 1 shows that two proximity switches 5 are respectively installed on two sides of a cable drum 6 of the roll changing trolley, the proximity switches 5 are connected with a counter module of a Programmable Logic Controller (PLC), and a signal output end of the PLC is respectively connected with a control end of a driving device of the roll changing trolley and an alarm.

Fig. 1 shows that the two proximity switches 5 are installed at two opposite sides of the center of circle of the cable drum 6 of the roll changing trolley, and the distance between the two proximity switches 5 and the center of circle of the cable drum 6 of the roll changing trolley is 350mm respectively.

The utility model discloses install proximity switch 5 on the 6 baffles of cable drum of roll change dolly, one is respectively installed to 6 both sides of cable drum, the cable drum 6 rotation condition to the roll change dolly detects, it calculates to add up to proximity switch 5 detects 6 pivots 4 times of cable drum in every scanning period of programmable controller (PLC), when accumulator CTU output result is equal before certain scanning period and the specific time, proximity switch 5 continuously detects pivot 4 promptly, programmable controller (PLC) judge that cable drum 6 takes place the mechanical card and hinder the trouble, automatically, roll change control system sends roll change dolly fault signal, roll change dolly stall, prevent to hinder and cause the phenomenon of dolly power cable 7 to be pulled apart to take place because of the mechanical card of reel.

The utility model discloses a proximity switch 5 of an embodiment is installed on locating the baffle apart from 6 centre of a circle 350mm of cable drum, has 12 pivots 4 on the cable drum 6, angle 30 degrees between two pivots 4, and proximity switch 5 detects 12 pivots 4 in dolly operation in-process, and proximity switch 5 detects pivot 4 once, and counter output adds 1, and Programmable Logic Controller (PLC) scans the output result in every scanning cycle.

The utility model effectively avoids the accident that the cable drum 6 does not rotate to cause the trolley power cable 7 to be broken, obtains better application effect through the practice of more than two years in a hot rolling plant, has stable control, obviously reduces the fault rate of the roller changing trolley, improves the daily operation rate of a production line, and further reduces the cost of spare parts such as cables; the method fills the technical blank of the roll changing trolley in the field of preventing the power cable from being pulled apart, and has higher popularization value in the same type of production line.

Claims

1. The utility model provides a prevent that hot rolling roll change dolly cable from breaking controlling means which characterized in that: the roll changing trolley comprises two proximity switches (5) and a Programmable Logic Controller (PLC), wherein the two proximity switches (5) are respectively installed on two sides of a roll changing trolley cable drum (6), the proximity switches (5) are connected with a counter module of the Programmable Logic Controller (PLC), and a signal output end of the Programmable Logic Controller (PLC) is respectively connected with a control end of a roll changing trolley driving device and an alarm.

2. The control device for preventing the cable of the hot rolling roll changing trolley from being broken as claimed in claim 1, wherein: the two proximity switches (5) are arranged at two opposite sides of the circle center of the roll changing trolley cable drum (6), and the distance between the two proximity switches (5) and the circle center of the roll changing trolley cable drum (6) is 350mm respectively.