CN202542295U - Variable-frequency protection system of automatic container - Google Patents
Variable-frequency protection system of automatic container Download PDFInfo
- Publication number
- CN202542295U CN202542295U CN2012200549119U CN201220054911U CN202542295U CN 202542295 U CN202542295 U CN 202542295U CN 2012200549119 U CN2012200549119 U CN 2012200549119U CN 201220054911 U CN201220054911 U CN 201220054911U CN 202542295 U CN202542295 U CN 202542295U
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- plc
- frequency
- motor
- protection system
- automatic container
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Abstract
The utility model discloses a variable-frequency protection system of an automatic container. The automatic container comprises a PLC (programmable logic controller), the PLC respectively controls a lifter motor and a hook motor through two frequency changers, a drop limit switch of a lifter and a phototube detector switch of a hook are connected with the PLC, the PLC respectively sends signals to the two frequency changers according to working states input by the drop limit switch and the phototube detector switch, and simultaneously the two frequency changers respectively feed signals back to the PLC. By the variable-frequency protection system, when the frequency changers have faults, motor brake can act in time to brake the lifter so as to protect the motors and the frequency changers against overload, reduce damages to equipment components caused by overload, decrease potential safety hazards in maintenance, and improve safety of the whole automatic container and delivery efficiency of spare parts.
Description
Technical field
The utility model relates to a kind of electric automatization control system, especially refers to a kind of automatic counter.
Background technology
Existing automatic counter mainly contains container main body, pallet, transport trolley, frequency converter, motor, PLC, checking system and weight-measuring device and forms.When the needs spare part, only need find the goods item of spare part, the corresponding tray number of input on read-out, transport trolley are then got the tray that needs through up-down and fore and aft motion to corresponding goods lattice and are delivered to platform.Transport trolley is to assign to signal of frequency converter through PLC, and frequency converter feeds back signal to dipping and heaving and the fore and aft motion that PLC realizes controlling motor.Problem is a frequency converter when reporting to the police, and lifting motor and the brake gear that colludes the pawl motor not outage can not in time be checked, and cause the elevator fast speed to drop, and equipment is caused badly damaged, the chain fracture also may occur, and maintenance difficulty is big, influences the workshop spare parts demand.
The utility model content
To the problem that prior art exists, the utility model provides a kind of frequency conversion protection system of automatic counter.The motor brake can in time be moved when this frequency conversion protection system let frequency converter failure; The braking elevator; Reach protection motor overload and frequency converter overload; Reduce the former components from being damaged of the equipment that causes because of overload and reduced the maintenance potential safety hazard, improved the safety of whole automatic counter and the outbound efficient of spare part.
For realizing above-mentioned purpose, the utility model technical scheme is:
The frequency conversion protection system of automatic counter, this automatic counter comprises a PLC, this PLC controls a lifting motor and respectively through two frequency converters and colludes the pawl motor; The falling-threshold switch of elevator is connected this PLC with the photocell detection switch that colludes pawl; PLC sends signal for respectively two frequency converters according to the mode of operation of falling-threshold switch and the input of photocell detection switch, and two frequency converters are given the PLC feedback signal respectively simultaneously.
The usefulness of the utility model is:
Elevator brake locking in time when reporting to the police to frequency converter in the prior art; The problem that causes device damage; The frequency conversion protection system of the automatic counter of the utility model is incorporated into the falling-threshold switch of elevator in the program of PLC with the alerting signal of colluding the photocell detection switch of pawl; Control the break-make of motor power and the adhesive of motor brake through PLC; Thereby reach protection motor overload and frequency converter overload, reduced the former components from being damaged of the equipment that causes because of overload and reduced the maintenance potential safety hazard.
Description of drawings
Fig. 1 is the workflow scheme drawing of lifting motor in the frequency conversion protection system of the automatic counter of the utility model;
Fig. 2 is the workflow scheme drawing that colludes the pawl motor in the frequency conversion protection system of the automatic counter of the utility model;
Fig. 3 is the scheme drawing that in the PLC program, increases the interlock protection program segment of automatic counter frequency converter warning and up-down.
The specific embodiment
Combine accompanying drawing and embodiment that the utility model is described at present.
Like the frequency conversion protection system of Fig. 1, the automatic counter shown in 2, this automatic counter comprises a PLC, and this PLC is through a Frequency Converter Control one lifting motor, and this PLC colludes the pawl motor through another Frequency Converter Control one.The falling-threshold switch of elevator is connected this PLC with the photocell detection switch that colludes pawl; As shown in Figure 3, the utility model is made amendment to the PCL program of prior art, and PLC sends signal for respectively two frequency converters according to the mode of operation of falling-threshold switch and the input of photocell detection switch, and two frequency converters are given the PLC feedback signal respectively simultaneously.
During normal condition work; When at goods reel number of touch-screen input, start elevator; PLC sends DO signal enabling lifting motor and colludes the pawl motor to frequency converter; DI signal of frequency converter feedback is used to inform PLC lifting motor and the starting state that colludes the pawl motor and starts rotating speed, lifting motor with collude the pawl motor and drive chain respectively and collude the real cash take of pawl and put goods.
As shown in Figure 1, when elevator touches the falling-threshold switch, according to amended PLC program, the falling-threshold switch will touch signal feedback and give PLC, and PLC sends lifting motor and emergency brake signal that colludes the pawl motor and warning to frequency converter.Treat that the operation process do not have that elevator normally moved when any fault took place.
As shown in Figure 2, be arranged at the electro-optical tubes in the counter, in picking and placeing the process of goods, block electro-optical tubes or goods superelevation if any the people; According to amended PLC program; The photocell detection switch can feed back to PLC with detection signal, and PLC sends lifting motor and emergency brake signal that colludes the pawl motor and warning to frequency converter, and elevator stops; The motor brake locking is output as OV.After restarting, could normally carry.
Follow the tracks of the work of the frequency conversion protection system of the automatic counter of the utility model in this special casehistory test: some months is after outage a period of time before the frequency conversion protection system of automatic counter not being transformed; As open automatic counter transport trolley again and can directly drop; Report to the police 3 times, wherein comparatively serious once is: wherein hook fracture.After adopting the frequency conversion protection system of the automatic counter of the utility model, not only this type of fault does not occur again, and has protected the damage of equipment greatly; Improved the safety performance of automatic counter self; When frequency converter is reported to the police, break off the power supply of motor brake, in time brake elevator; Prevent that the elevator freedom from down dropping; Also guaranteed under the situation of motor overload, can break off timely the power supply of motor, prevent motor burn out and avoid collude that pawl ruptures and tray is hit distortion when motor overload, improved the service life of motor and other Device elements.
Claims (1)
1. the automatic frequency conversion protection system of counter, it is characterized in that: this automatic counter comprises a PLC, this PLC controls a lifting motor and respectively through two frequency converters and colludes the pawl motor; The falling-threshold switch of elevator is connected this PLC with the photocell detection switch that colludes pawl; PLC sends signal for respectively two frequency converters according to the mode of operation of falling-threshold switch and the input of photocell detection switch, and two frequency converters are given the PLC feedback signal respectively simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200549119U CN202542295U (en) | 2012-02-17 | 2012-02-17 | Variable-frequency protection system of automatic container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200549119U CN202542295U (en) | 2012-02-17 | 2012-02-17 | Variable-frequency protection system of automatic container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202542295U true CN202542295U (en) | 2012-11-21 |
Family
ID=47162963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200549119U Expired - Fee Related CN202542295U (en) | 2012-02-17 | 2012-02-17 | Variable-frequency protection system of automatic container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202542295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676771A (en) * | 2016-03-08 | 2016-06-15 | 昆山华恒焊接股份有限公司 | Three-dimensional container control method and system |
-
2012
- 2012-02-17 CN CN2012200549119U patent/CN202542295U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676771A (en) * | 2016-03-08 | 2016-06-15 | 昆山华恒焊接股份有限公司 | Three-dimensional container control method and system |
| CN105676771B (en) * | 2016-03-08 | 2018-06-05 | 昆山华恒焊接股份有限公司 | The control method and system of three-dimensional container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20180217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |