CN216486668U - Safety early warning system used before starting of adhesive tape machine - Google Patents
Safety early warning system used before starting of adhesive tape machine Download PDFInfo
- Publication number
- CN216486668U CN216486668U CN202122774848.8U CN202122774848U CN216486668U CN 216486668 U CN216486668 U CN 216486668U CN 202122774848 U CN202122774848 U CN 202122774848U CN 216486668 U CN216486668 U CN 216486668U
- Authority
- CN
- China
- Prior art keywords
- contactor
- switch
- electrically connected
- early warning
- plc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a safety early warning system used before the starting of a rubber belt machine, which comprises an automatic switch, wherein the automatic switch is electrically connected with a control loop, and the control loop comprises a field pull-cord switch, a field operation box, a change-over switch, a time relay time-delay normally-open contact and a contactor which are sequentially connected in series; the field operation box comprises a stop button and a start button, the contactor is respectively connected with the delay time relay, the intermediate relay and the contactor normally closed auxiliary contact in parallel, and the contactor normally closed auxiliary contact is connected with the early warning bell in series; the safety early warning system also comprises a PLC, wherein the input end of the PLC is respectively and electrically connected with the change-over switch, the normally open auxiliary contact of the contactor and the field pull-cord switch, and the output end of the PLC is respectively and electrically connected with the motor starting relay and the electric bell starting relay; the automatic switch is also electrically connected with a main contact of the contactor, and the main contact of the contactor is electrically connected with the motor. The utility model can remind the operator to timely keep away from the adhesive tape machine to be operated, thereby ensuring the safety of the operator.
Description
Technical Field
The utility model belongs to the field of metallurgical equipment, and particularly relates to a safety early warning system used before starting of an adhesive tape machine.
Background
In metallurgical enterprises, belt conveyor conveying is widely applied to feeding operation of various working procedures such as thermoelectricity, ore dressing, sintering, coking, iron making and the like. The adhesive tape machine is used as transportation equipment, regular inspection is needed, and in the inspection process, if the adhesive tape machine suddenly runs, inspection personnel do not keep a certain safety distance from the running adhesive tape machine, so that safety accidents are easily caused, and casualties are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that safety accidents are easy to happen in the inspection process of a tape machine, and provides a safety early warning system used before the tape machine is started.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a safety early warning system used before the starting of an adhesive tape machine comprises an automatic switch, wherein the automatic switch is electrically connected with a control loop, the control loop comprises a field pull-cord switch, and the field pull-cord switch is sequentially connected with a field operation box, a change-over switch, a time relay time-delay normally open contact and a contactor in series; the field operation box comprises a stop button and a start button, the change-over switch comprises 3 pairs of 6 contacts, the contactor is respectively connected with the delay time relay, the intermediate relay and the contactor normally closed auxiliary contact in parallel, and the contactor normally closed auxiliary contact is connected with the early warning bell in series; the safety early warning system also comprises a PLC (programmable logic controller), the PLC is electrically connected with the industrial personal computer, the input end of the PLC is respectively and electrically connected with the change-over switch, the normally open auxiliary contact of the contactor and the field pull switch, and the output end of the PLC is respectively and electrically connected with the motor starting relay and the electric bell starting relay; the automatic switch is also electrically connected with a main contact of the contactor, and the main contact of the contactor is electrically connected with the motor.
Preferably, the on-site pull-cord switch is formed by connecting at least 2 pull-cord switches in series.
Further, the transfer switch also includes a pair 7/8 backup contacts, 7/8 which close upon 1/2 contact failure, thereby enabling a chassis-side manual mode of operation.
Further, the motor is electrically connected with a grounding device.
The utility model adds the early warning bells as voice broadcasting devices at the head part, the tail part and the middle part of the adhesive tape machine, and adds the emergency stopping devices on all the adhesive tape machines. Patrolling and examining the personnel and patrolling and examining the in-process at carrying out the tape machine, if the tape machine starts, the voice broadcast device can send out the police dispatch newspaper and remind patrolling and examining the personnel and keep away from the tape machine to through emergency shutdown device emergency shutdown, thereby the protection personal safety.
Drawings
FIG. 1 is a schematic circuit diagram of a safety pre-warning system before an adhesive tape machine is started according to the present invention;
reference numerals: 1-automatic switch; 2-contactor main contact; 3, a motor; 4-pulling a rope switch on site; 5-stop button; 6-start button; 7-motor start relay; 8-electric bell starting relay; 9-a grounding device; 10-a transfer switch; 11-PLC controller output end; 12-PLC controller input end; 13-normally open contact of intermediate relay; 14-contactor normally closed auxiliary contact; 15-a contactor; 16-time relay; 17-an intermediate relay; 18-an early warning bell; 19-field operation box; 20-time relay time-delay normally open contact; 21-contactor normally open auxiliary contact.
L1, L2, and L3 represent three phases of three-phase alternating current A, B, C, respectively; l11, L21, L31 respectively represent three-phase connection lines which are controlled by the switch of the automatic switch 1 and are connected with the main contact 2 of the contactor; l21, L22, L32 represent three-phase connecting lines connecting the contactor main contacts 2 and the motor 3.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the safety early warning system used before the starting of the adhesive tape machine comprises an automatic switch 1, wherein the automatic switch 1 is electrically connected with a control loop, the control loop comprises a field pull-cord switch 4, and the field pull-cord switch 4 is formed by connecting at least 2 pull-cord switches in series. The field pull switch is sequentially connected with the field operation box 19, the change-over switch 10, the time relay time-delay normally open contact 20 and the contactor 15 in series; the field operation box 19 comprises a stop button 5 and a start button 6, the change-over switch 10 comprises 3 pairs of 6 contacts, the contactor 15 is respectively connected with the delay time relay 16, the intermediate relay 17 and the contactor normally closed auxiliary contact 14 in parallel, and the contactor normally closed auxiliary contact 14 is connected with the early warning bell 18 in series; the safety early warning system also comprises a PLC (programmable logic controller), the PLC is electrically connected with an industrial personal computer (in the prior art, not shown in the figure), the input end 12 of the PLC is electrically connected with the change-over switch 10, the normally-open auxiliary contact 21 of the contactor and the field pull-cord switch 4 respectively, and the output end 11 of the PLC is electrically connected with the motor starting relay 7 and the electric bell starting relay 8 respectively; the automatic switch is also electrically connected with a contactor main contact 12, the contactor main contact 12 is electrically connected with the motor 3, and the motor 3 is electrically connected with the grounding device 9.
The transfer switch also includes a pair 7/8 backup contacts, 7/8 which close when 1/2 contacts fail, thereby enabling a chassis-side manual mode of operation.
In the utility model, the PLC mainly controls the rubber belt machine by controlling the relays 7 and 8 and the contactor 15, and controls the voice broadcast of the early warning bell 18 by the PLC before the rubber belt machine is started, so as to realize the safety early warning before the rubber belt machine is operated.
The intermediate relay 17 mainly functions to convert the signal at the output end 11 of the PLC controller and then control the contactor 15.
The contactor 15 is mainly used for controlling the adhesive tape machine, meanwhile, a pair of normally open auxiliary contacts 21 of the contactor 15 is connected to the PLC, and a pair of normally closed auxiliary contacts 14 of the contactor 15 is connected with the early warning bell 18 in series.
The on-site pull-cord switch 4 is mainly used for emergency stop and is connected to the PLC controller at the same time. After receiving the pull-cord switch signal, the PLC controller sends a stop command, the motor 3 stops working, and the running adhesive tape machine stops.
The field operation box 19 is mainly used for starting and stopping at the machine side, and the field operation box 19 is provided with a starting button 5 and a stopping button 6. And (3) switching the change-over switch 10 to a manual operation mode beside the case, pressing the start button 5 to start the adhesive tape machine, and pressing the stop button 6 to stop the adhesive tape machine.
The change-over switch 10 is mainly used for switching between manual control of a machine-side operation box and remote control of an industrial personal computer.
The early warning bell 18 is mainly used for warning prompt, when the early warning signal sent by the PLC or the signal of the start button 5 of the operation box beside the machine is received, the early warning bell 18 starts voice warning prompt, and the prompt content can be manually set or recorded and played according to the risk level.
In actual operation, when the switch 10 is turned to the right 45 °, the switch 1/2 contact and the switch 7/8 contact are turned on, and the manual start mode of the machine side box is performed. When the start button 6 of the field operation box 19 is pressed, the intermediate relay 17 is switched on, the delay on-time relay 16 is switched on, the normally open contact 13 of the intermediate relay is closed, and the early warning bell 18 starts ringing early warning. After the time delay on-time relay 16 finishes timing, the time delay normally open contact 20 of the time delay relay is closed, the contactor 15 is switched on, the main contact 2 of the contactor is closed, and the motor 3 is started. The contactor 15 is turned on and the contactor normally closed auxiliary contact 14 is opened, and the alarm bell 18 stops ringing. When the operation needs to be stopped, the stop button 5 of the field operation box 19 is pressed, the contactor 15 is powered off, and the motor 3 stops operating. When an emergency occurs, the field pull-cord switch 4 is pulled, the contactor 15 loses power, and the motor 3 stops running.
When the change-over switch 10 is turned to the left 45 degrees, the contact 3/4 and the contact 5/6 are switched on, and the remote control starting mode of the industrial personal computer is adopted. An operator remotely sends a starting instruction through an industrial personal computer operation picture, and after receiving the starting instruction, the PLC controller switches on the electric bell starting relay 8 and the early warning bell 18 gives an alarm. Meanwhile, the PLC starts timing (which can be realized by the prior art) inside, and after the timing is finished, the motor starting relay 7 is switched on to start the motor 3. After the motor 3 is started, the normally open auxiliary contact 21 of the contactor is connected, and the early warning bell 18 stops ringing. When an emergency occurs, the field pull-cord switch 4 is pulled, the contactor 15 loses power, and the motor 3 stops running.
Claims (4)
1. A safety early warning system used before the starting of a tape machine is characterized by comprising an automatic switch, wherein the automatic switch is connected with a control loop, the control loop comprises a field pull-cord switch, and the field pull-cord switch is sequentially connected in series with a field operation box, a change-over switch, a time relay time-delay normally-open contact and a contactor; the field operation box comprises a stop button and a start button, the change-over switch comprises 3 pairs of 6 contacts, the contactor is respectively connected with the delay time relay, the intermediate relay and the contactor normally closed auxiliary contact in parallel, and the contactor normally closed auxiliary contact is connected with the early warning bell in series; the safety early warning system also comprises a PLC (programmable logic controller), the PLC is electrically connected with the industrial personal computer, the input end of the PLC is respectively and electrically connected with the change-over switch, the normally open auxiliary contact of the contactor and the field pull switch, and the output end of the PLC is respectively and electrically connected with the motor starting relay and the electric bell starting relay; the automatic switch is also electrically connected with a main contact of the contactor, and the main contact of the contactor is electrically connected with the motor.
2. The safety precaution system before the belt conveyor is started up as claimed in claim 1, wherein the field pull switch is composed of at least 2 pull switches connected in series.
3. The pre-activation safety precaution system of claim 1, wherein said switch further includes a pair of 7/8 backup contacts for activating a chassis-side manual mode of operation.
4. The safety precaution system before the tape machine is started up of any one of claims 1 to 3, wherein the motor is electrically connected to the grounding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122774848.8U CN216486668U (en) | 2021-11-13 | 2021-11-13 | Safety early warning system used before starting of adhesive tape machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122774848.8U CN216486668U (en) | 2021-11-13 | 2021-11-13 | Safety early warning system used before starting of adhesive tape machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216486668U true CN216486668U (en) | 2022-05-10 |
Family
ID=81451258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122774848.8U Active CN216486668U (en) | 2021-11-13 | 2021-11-13 | Safety early warning system used before starting of adhesive tape machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216486668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303756A (en) * | 2022-09-13 | 2022-11-08 | 福建龙净环保股份有限公司 | Belt conveyor system and method for controlling starting and stopping of belt conveyor |
-
2021
- 2021-11-13 CN CN202122774848.8U patent/CN216486668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303756A (en) * | 2022-09-13 | 2022-11-08 | 福建龙净环保股份有限公司 | Belt conveyor system and method for controlling starting and stopping of belt conveyor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102251980B (en) | Subway tunnel fan control system | |
| CN201378274Y (en) | Automatic emergency lifting device when in PLC breakdown | |
| CN216486668U (en) | Safety early warning system used before starting of adhesive tape machine | |
| CA2225966A1 (en) | Controlled emergency stop apparatus for elevators | |
| CN104555626A (en) | Control system and method for power-off safe lowering of construction elevator | |
| CN103631193B (en) | A kind ofly realize the system and method that equipment control mode concentrates bumpless transfer | |
| CN211826929U (en) | Remote and local control system of vibration ore drawing motor | |
| CN109502260A (en) | A kind of control system of track carrier loader | |
| CN108958075B (en) | Limit control device for emergency band-type brake of mixer furnace | |
| CN202182052U (en) | Fan control system of underground railway tunnel | |
| CN106444615B (en) | Instant start and delay power failure circuit and tape machine comprising same | |
| CN202400743U (en) | Slip-preventing device for crane | |
| CN109455486A (en) | A kind of ring is cold to unload grey trolley automatic dust unloading control system | |
| CN209535055U (en) | A kind of molten iron tractor alternating-current electric control system | |
| CN204068769U (en) | A kind of control loop no-harass switch device of low voltage motor | |
| CN202347045U (en) | Faulted oxygen lance lifting control system | |
| CN109274312A (en) | A kind of sealing-tape machine control circuit with starting indication bell interlocking by machine | |
| CN219708208U (en) | Mining belt feeder prevents from starting circuit | |
| CN214336578U (en) | Remote control start-stop device for drilling machine | |
| CN111309019A (en) | Inspection robot, emergency stop control device thereof and state confirmation method | |
| CN208986860U (en) | A kind of sealing-tape machine control circuit with starting indication bell interlocking by machine | |
| CN207868789U (en) | Belt transmission current overload protection protecting system | |
| CN218003947U (en) | Remote control interlocking system for travelling crane | |
| CN212723724U (en) | Remote control system of mining belt conveyor | |
| CN218609825U (en) | Slow transmission control system of ball mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |