CN2649202Y

CN2649202Y - Steel pipe perforating background ejector-pin escape preventing device

Info

Publication number: CN2649202Y
Application number: CN 03270447
Authority: CN
Inventors: 袁兴杰
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2003-09-26
Filing date: 2003-09-26
Publication date: 2004-10-20
Anticipated expiration: 2013-09-26

Abstract

The utility model relates to an ejector rod escape prevention device of steel pipe perforation backstage which includes a first sensor unit arranged at a capturing device of a perforation backstage, a second sensor unit arranged at a roller at rear of a swinging baffler and in front of an air reducing mill, a hot metal detector. The first sensor unit, the second sensor unit and the hot metal detector is connected with a programmable controller via circuit. The utility model can effectively prevent the situation that the red pipe still on the rod run towards the direction of the air reducing mill together with the rod because the capturing device is not able to catch the ejector rod, which avoids causing the accident of the explosion of the air reducing mill in order to reduce the cost.

Description

The push rod release apparatus is prevented on the perforating steel pipe backstage

Technical field

The utility model relates to the anti-push rod release apparatus in a kind of perforating steel pipe backstage.

Background technology

Steel pipe is when rolling groove, and the solid pipe of steel pipe is rolled by two rolls about the perforation after heating through the stove that goes in ring.As shown in Figure 1, after the rolling end, on the perforation backstage, red pipe 12 ' is wrapped in push rod 11 ' and runs to when taking off on the bar roller-way 13 ', trap setting 14 ' rises, and embraces the head of push rod 11 ', takes off bar roller-way 13 ' and subtracts the direction operation that front roller-way 16 ' and sky subtract machine 17 ' with 50 hertz of speed to sky.Red pipe 12 ' is broken away from after the push rod 11 ' and operation backward, and swing gate 15 ' descends, and the push rod 11 ' that stays can be got back to roll line once more and be rolled.

In the working site, if trap setting 14 ' (for example wear and tear etc.) in case go wrong, cause that trap setting 14 ' catches incessantly push rod 11 ', can cause push rod 11 ' to follow red pipe 12 ' to subtract the operation of machine 18 ' direction toward sky together, subtract machine 17 ' if enter sky together, will cause that sky subtracts the accident of the whole explosions of frame of machine 17 ', the steel pipe hot-zone will face stopping production a few hours and will keep in repair when the time comes, and loss and maintenance cost are all bigger.

Summary of the invention

The purpose of this utility model is to provide a kind of perforating steel pipe backstage to prevent the push rod release apparatus, it can effectively prevent because trap setting is not caught push rod, do not take off the red pipe of bar and push rod subtracts the operation of machine direction together toward sky situation, avoid causing sky to subtract the accident that frame blows off, thereby save cost.

For achieving the above object, the push rod release apparatus is prevented on a kind of perforating steel pipe backstage that the utility model provides, its comprise one be arranged at the perforation trap setting place, backstage the first sensor unit; Be arranged at swing plate washer back, sky subtracts one second sensor unit, a hot metal detector at front roller-way place; Described first sensor unit, second sensor unit, hot metal detector circuit connect a Programmable Logic Controller.

Described first sensor unit comprises and is arranged at first grating and first reflective mirror that takes off bar roller-way both sides respectively;

Described second sensor unit comprises and is arranged at second grating and second reflective mirror that sky subtracts the front roller-way both sides respectively;

Wherein, hot metal detector can detect red pipe, but can not detect push rod.And for the first sensor unit and second sensor unit, as long as object is arranged through between grating and the reflective mirror, grating just has the detection signal generation and sends Programmable Logic Controller to, sends control signal by Programmable Logic Controller.When normal red pipe took off bar, trap setting rose, and caught the head of push rod, push rod is stayed taken off on the bar roller-way, and the swing plate washer rises, and moves forward with certain speed and take off the bar roller-way, made red pipe subtract the machine direction toward sky and carried, and advanced sky and subtracted machine and be rolled.But this moment as generation:

Trap setting in time rises, and causes trap setting not catch push rod, takes off the bar roller-way and moves forward, causes red pipe to be wrapped in push rod and enters sky together and subtract machine, can damage sky and subtract frame.This moment, second sensor unit worked, because of push rod has also brought out, and hot metal detector detects less than signal the grey black push rod, so the second grid ratio hot metal detector in second sensor unit detects signal earlier, and signal is conveyed into carries out logic all over range controller and judge, make and take off the bar roller-way and stop to turn round forward, sky subtracts the front roller-way counter-rotating, the swing plate washer descends, and can prevent that like this push rod from entering sky and subtracting machine, avoids sky to subtract the accident of frame explosion.

Push rod by the situation of taking off half under, trap setting place push rod breaks off relations.Because when just beginning, red pipe is normally to take off, and hot metal detector detects this red pipe earlier than second grating, and second sensor unit does not detect abnormal conditions yet.But break off relations because of push rod this moment, first grating in the first sensor unit detects less than there being push rod will produce warning message, and by the judgement of programmable controller program logic, make and take off the bar roller-way and stop to turn round forward, sky subtracts the front roller-way counter-rotating, the swing plate washer descends, and can prevent that so also push rod from entering sky and subtracting machine, avoids sky to subtract the accident of frame explosion.

Comprehensive the above, the utility model can guarantee that push rod does not enter sky and subtracts machine, avoids causing sky to subtract the accident that frame blows off.

Description of drawings

Fig. 1 is the on-the-spot schematic diagram on perforating steel pipe backstage;

Fig. 2 is for increasing the on-the-spot schematic diagram on perforating steel pipe of the present utility model backstage;

Fig. 3 does not in time catch the on-the-spot schematic diagram on the perforating steel pipe backstage of push rod for trap setting;

Fig. 4 is for to take off a half at push rod, and trap setting place push rod takes off the on-the-spot schematic diagram on the perforating steel pipe backstage of bar.

The specific embodiment

Following according to Fig. 2～Fig. 4, a better embodiment of the present utility model is described.

As shown in Figure 2, for increasing the on-the-spot schematic diagram on perforating steel pipe of the present utility model backstage.The push rod release apparatus is prevented on the perforating steel pipe backstage that the utility model provides, and comprises the first sensor unit 18 that is arranged at perforation trap setting place, backstage; Be arranged at swing plate washer 15 back, sky subtracts second sensor unit 19, the hot metal detector 20 at front roller-way 16 places; First sensor unit 18, second sensor unit 19, hot metal detector 20 circuit connect a Programmable Logic Controller (not illustrating in the drawings).

First sensor unit 18 comprises and is arranged at first grating 181 and first reflective mirror 182 that takes off bar roller-way 13 both sides respectively;

Second sensor unit 19 comprises and is arranged at second grating 191 and second reflective mirror 192 that sky subtracts front roller-way 16 both sides respectively;

Wherein, hot metal detector 20 can only detect red pipe 12, but can not detect push rod 11.And for the first sensor unit 18 and second sensor unit 19, as long as object is arranged through between grating 181 and the reflective mirror 182, in the time of between grating 191 and the reflective mirror 192, grating 181,191 just has the detection signal generation and sends Programmable Logic Controller to, sends control signal by Programmable Logic Controller.When normal red pipe 12 took off bar, trap setting 14 rose, and catches the head of push rod 11, push rod 11 is stayed taken off on the bar roller-way 13, swing plate washer 15 rises, and moves forward with certain speed and take off bar roller-way 13, make red pipe 12 subtract machine 17 directions and carry, advance sky and subtract machine 17 and be rolled toward skies.

As shown in Figure 3, in time rise, cause trap setting 14 not catch push rod 11, take off bar roller-way 13 and move forward, cause red pipe 12 to be wrapped in push rod 11 and enter sky together and subtract machine 17, can damage sky and subtract frame as trap setting 14.This moment, second sensor unit 19 worked, because of push rod 11 has also brought out, and 20 pairs of grey black push rods of hot metal detector 11 detect less than signal, so second grating, the 191 specific heat metal detectors 20 in second sensor unit 19 detect signal earlier, and signal is conveyed into carries out logic all over range controller and judge, make and take off bar roller-way 13 and stop to turn round forward, sky subtracts front roller-way 16 counter-rotatings, swing plate washer 15 descends, can prevent that like this push rod 11 from entering sky and subtracting machine 17, avoid sky to subtract the accident of frame explosion.

As shown in Figure 4, taken off under the situation of half at push rod 11, trap setting 14 place's push rods 11 break off relations.Because when just beginning, red pipe 12 is normally to take off, and hot metal detector 20 to the second gratings 191 detect these red pipe 12, the second sensor units 19 earlier and also do not detect abnormal conditions.But break off relations because of push rod 11 this moment, first grating 181 in the first sensor unit 18 detects less than there being push rod 11 will produce warning message, and by the judgement of programmable controller program logic, make and take off bar roller-way 13 and stop to turn round forward, sky subtracts front roller-way 16 counter-rotatings, swing plate washer 15 descends, and can prevent that so also push rod 11 from entering sky and subtracting machine 17, avoids sky to subtract the accident of frame explosion.

When above-mentioned unusual generation is arranged, Programmable Logic Controller also can trigger an alarm, send warning message, after producers hear warning message, the automatic operation on backstage immediately can stop to bore a hole, and in time be converted to manual operation, red pipe 12 is fallen back to swing plate washer 15 or with driving, hang away, and then enter normal operating condition.

Therefore, the utility model can guarantee that push rod does not enter sky and subtracts machine, avoids causing sky to subtract the accident that frame blows off.

Claims

1. the anti-push rod release apparatus in a perforating steel pipe backstage is characterised in that, it comprises a first sensor unit that is arranged at perforation trap setting place, backstage; Be arranged at swing plate washer back, sky subtracts one second sensor unit, a hot metal detector at front roller-way place; Described first sensor unit, second sensor unit, hot metal detector circuit connect a Programmable Logic Controller.

2. the push rod release apparatus is prevented on perforating steel pipe as claimed in claim 1 backstage, it is characterized in that, described first sensor unit comprises and is arranged at first grating and first reflective mirror that takes off bar roller-way both sides respectively.

3. the push rod release apparatus is prevented on perforating steel pipe as claimed in claim 1 backstage, it is characterized in that, described second sensor unit comprises and is arranged at second grating and second reflective mirror that sky subtracts the front roller-way both sides respectively.