CN103193146A - Power supply system of escalator - Google Patents
Power supply system of escalator Download PDFInfo
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- CN103193146A CN103193146A CN2012100016710A CN201210001671A CN103193146A CN 103193146 A CN103193146 A CN 103193146A CN 2012100016710 A CN2012100016710 A CN 2012100016710A CN 201210001671 A CN201210001671 A CN 201210001671A CN 103193146 A CN103193146 A CN 103193146A
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- escalator
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Abstract
The invention discloses a power supply system of an escalator, which comprises a power supply control module and a frequency conversion module, wherein the frequency conversion module is electrically connected with the power supply control module, the power supply control module comprises two sets of transformers with secondary ends connected in parallel, and a change-over switch used for switching between the two sets of transformers, the two sets of transformers are a transformer for supplying power to an external power supply and a transformer for supplying power to an uninterrupted power supply respectively. After the adoption of the technical scheme, the power supply system of the escalator has the benefits as follows: the escalator can not be stopped under the condition of power supply flashing, the work of the escalator is guaranteed to be smooth, meanwhile, the safety of personnel riding the escalator can be ensured, and safety accidents can be effectively avoided.
Description
Technical field
The present invention relates to a kind of escalator power-supply system, be specifically related to a kind of escalator and dodge the power-supply system of not stopping ladder under the disconnected situation at power supply.
Background technology
In the prior art, the control system of escalator disposes one group of voltage transformer, and external power supply is AC380V, and external power supply is input to primary, transformer secondary output output AC220V, AC24V and DC24V.Under the situation of uncertain factor, external power supply can drop into about AC260V moment, produces power supply and dodges disconnected phenomenon, and the voltage transformer in the control system of escalator causes breakdown of equipment because of the reduction of input voltage at this moment, and equipment can't normal operation.If personnel are arranged when taking escalator, power supply takes place suddenly dodge disconnected phenomenon, can personnel's personal safety be impacted, even fatal accident may take place.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of the sudden strain of a muscle under the disconnected situation at power supply not stop ladder, guarantee the escalator stable working, guarantee to take escalator personnel's personal safety simultaneously, effectively avoid the escalator power-supply system of safety misadventure.
For achieving the above object, technical scheme of the present invention is as follows: a kind of escalator power-supply system, comprise energy supply control module and frequency-variable module, and described frequency-variable module is electrically connected with described energy supply control module; The change-over swith that described energy supply control module comprises two groups of voltage transformers that out secondary is connected in parallel and is used for switching between two groups of voltage transformers, described two groups of voltage transformers are respectively the voltage transformer of external power source and the voltage transformer of uninterrupted power supply (UPS) power supply.
Preferably, the control loop of described two groups of voltage transformers is the PLC control loop, is respectively equipped with start button, contactless switch and startup indicator lamp, and described start button is connected electrically in the input end of described PLC, described contactless switch and startup indicator lamp are connected electrically in the mouth of described PLC respectively
Preferably, the control loop of described two groups of voltage transformers interlocking connection each other mutually.
Preferably, the control loop of described two groups of voltage transformers also is provided with stop button and stop indicator lamp, and described stop button is connected electrically in the input end of described PLC, describedly stops the mouth that indicator lamp is connected electrically in described PLC.
Adopt the beneficial effect of the technical program to be: because energy supply control module is provided with two groups of voltage transformers, and two groups of voltage transformers are respectively external power source and uninterrupted power supply (UPS) power supply, easy switching, and the voltage transformer of uninterrupted power supply (UPS) power supply, even when its input voltage reduces, after the uninterrupted power supply (UPS) effect, keep the required output of normal operation, thereby guarantee that when input voltage reduces escalator can also normal operation; By frequency-variable module is set; when input voltage reduces; system's output frequency was descended according to the time of setting; by motor deceleration generating; feedback energy is supplied with bus voltage; bus voltage raises to overcome the reduction of input voltage, thereby guarantees that staircase can normal operation, and plays the under-voltage protection effect.Thereby under the disconnected situation of power supply sudden strain of a muscle, do not stop ladder, guarantee the escalator stable working, guarantee to take escalator personnel's personal safety simultaneously, effectively avoid safety misadventure.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention technology, to do to introduce simply to the accompanying drawing of required use in the embodiment technical description below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 always schemes for energy supply control module of the present invention.
Fig. 2 always schemes for voltage transformer control loop of the present invention.
Fig. 3 is frequency converter principle schematic of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A kind of escalator power-supply system of the present invention comprises energy supply control module and frequency-variable module, and described frequency-variable module is electrically connected with described energy supply control module.As shown in Figure 1, power control system is provided with two groups of voltage transformers, one group of voltage transformer TRF2 that voltage transformer is external power source, and external power source is AC380V; Another group voltage transformer is the voltage transformer TRF1 of uninterrupted power supply (UPS) UPS power supply, uninterrupted power supply (UPS) UPS power supply is AC220V, uninterrupted power supply (UPS) UPS input end is provided with air switch CPB, uninterrupted power supply (UPS) UPS mouth is provided with air switch F1C, the secondary input end that is connected in the escalator power supply in parallel of two groups of voltage transformers.Under the normal circumstances, use the voltage transformer TRF2 power supply of external power supply AC380V, TRF2 level output AC220V, AC24V of voltage transformer and the escalator of DC24V are powered, when outer power voltage reduces, powered by the voltage transformer TRF1 of uninterrupted power supply (UPS) UPS output AC220V, keep normal secondary output AC220V, AC24V and the escalator of DC24V and power.
Because energy supply control module is provided with two groups of voltage transformers, and two groups of voltage transformers are respectively external power source and uninterrupted power supply (UPS) power supply, easy switching, and the voltage transformer of uninterrupted power supply (UPS) power supply, even when its input voltage reduces, after the uninterrupted power supply (UPS) effect, keep the required output of normal operation, thereby guarantee that escalator can also normal operation when input voltage reduces.
As shown in Figure 3; converter plant detects the input voltage of control module; when input voltage reduces; system's output frequency was descended according to the time of setting; by motor deceleration generating; feedback energy is offered the reduction that the bus voltage bus voltage raises to overcome input voltage, thereby guarantee that staircase can normal operation, and play the under-voltage protection effect.
As shown in Figure 2, the voltage transformer TRF2 of external power source, its control loop is respectively equipped with start button XA, contactless switch SA and starts indicator lamp LA and Programmable Logic Controller PLC, start button XA is connected with contactless switch SA by Programmable Logic Controller PLC, starts indicator lamp LA and is controlled by Programmable Logic Controller PLC.The voltage transformer TRF1 of uninterrupted power supply (UPS) UPS power supply, its control loop is respectively equipped with start button XB, contactless switch SB and starts indicator lamp LB and Programmable Logic Controller PLC, start button XB is connected with contactless switch SB by Programmable Logic Controller PLC, starts indicator lamp LB and is controlled by Programmable Logic Controller PLC.The normally closed contact SA2 of contactless switch SA is arranged in the control loop of voltage transformer TRF1 of uninterrupted power supply (UPS) UPS power supply, the normally closed contact SB2 of contactless switch SB is arranged in the control loop of voltage transformer TRF2 of external power source, and contactless switch SA and its normally closed contact SA2 and contactless switch SB and its normally closed contact SB2 form interlocking structure.Two voltage transformer control loops are connected in parallel, and power control system also is provided with stop button XT and stop indicator lamp LT, and are provided with the PLC control setup.Effectively switch two groups of voltage transformers by PLC control setup and start button XA, start button XB, stop button XT, during normal the use, the voltage transformer TRF1 that switches to uninterrupted power supply (UPS) UPS power supply carries out work, when phenomenon was broken in the sudden strain of a muscle of generation power supply, escalator was by the voltage transformer work of uninterrupted power supply (UPS) UPS power supply.When uninterrupted power supply (UPS) UPS damaged, the voltage transformer TRF2 that switches to external power source carried out work.
Principle of work: when button XB presses, contactless switch SB coil gets electric adhesive, switch to the voltage transformer TRF2 work of external power source this moment, indicator lamp LB lights, the normally closed contact SB of contactless switch SB disconnects simultaneously, control loop to the voltage transformer TRF1 of uninterrupted power supply (UPS) power supply interlocks, and guarantees that this control loop disconnects, and avoids causing two loops to work simultaneously.Press stop button XT, contactless switch SB discharges, and quits work, and its normally closed contact SB gets back to normally off, and indicator lamp LT lights simultaneously.
When button XA presses, contactless switch SA coil gets electric adhesive, switch to the voltage transformer TRF1 work of uninterrupted power supply (UPS) power supply this moment, indicator lamp LA lights, the normally closed contact SA of contactless switch SA disconnects simultaneously, control loop to the voltage transformer TRF2 of external power source interlocks, and guarantees that this control loop disconnects, and avoids causing two loops to work simultaneously.Press stop button XT, contactless switch SA discharges, and quits work, and its normally closed contact SA gets back to normally off, and indicator lamp LT lights simultaneously.
Frequency-variable module is when detecting input voltage less than setting value, think the input voltage instant power-down, to the current output frequency of system, descend according to the time of setting, supply with bus voltage by motor deceleration electrification feedback energy, bus voltage can raise to overcome input voltage and reduce.During the input power down, the energy of motor feedback be if can guarantee the frequency-variable module DC bus-bar voltage greater than the under-voltage protection value, input recover normal after, frequency-variable module will accelerate to the frequency before the power down automatically; If during the input power down; the energy shortage of motor feedback so that the frequency-variable module dc bus greater than the under-voltage protection value; frequency-variable module will carry out under-voltage protection; after input recovers normally; power failure restart facility and the sub-state of external input terminals that frequency-variable module will arrange according to system; start frequency-variable module, when selecting the power failure restart facility, frequency-variable module will move according to the rotating-speed tracking mode.
Adopt the beneficial effect of the technical program to be: because energy supply control module is provided with two groups of voltage transformers, and two groups of voltage transformers are respectively external power source and uninterrupted power supply (UPS) power supply, easy switching, and the voltage transformer of uninterrupted power supply (UPS) power supply, even when its input voltage reduces, after the uninterrupted power supply (UPS) effect, keep the required output of normal operation, thereby guarantee that when input voltage reduces escalator can also normal operation; By frequency-variable module is set; when input voltage reduces; system's output frequency was descended according to the time of setting; by motor deceleration generating; feedback energy is supplied with bus voltage; bus voltage raises to overcome the reduction of input voltage, thereby guarantees that staircase can normal operation, and plays the under-voltage protection effect.Thereby under the disconnected situation of power supply sudden strain of a muscle, do not stop ladder, guarantee the escalator stable working, guarantee to take escalator personnel's personal safety simultaneously, effectively avoid safety misadventure.Thereby under the disconnected situation of power supply sudden strain of a muscle, do not stop ladder, guarantee the escalator stable working, guarantee to take escalator personnel's personal safety simultaneously, effectively avoid safety misadventure.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. an escalator power-supply system is characterized in that, comprises energy supply control module and frequency-variable module, and described frequency-variable module is electrically connected with described energy supply control module; The change-over swith that described energy supply control module comprises two groups of voltage transformers that out secondary is connected in parallel and is used for switching between two groups of voltage transformers, described two groups of voltage transformers are respectively the voltage transformer of external power source and the voltage transformer of uninterrupted power supply (UPS) power supply.
2. a kind of escalator power-supply system according to claim 1, it is characterized in that, the control loop of described two groups of voltage transformers is the PLC control loop, be respectively equipped with start button, contactless switch and startup indicator lamp, described start button is connected electrically in the input end of described PLC, and described contactless switch and startup indicator lamp are connected electrically in the mouth of described PLC respectively.
3. according to claim 1 or 2 described a kind of escalator power-supply systems, it is characterized in that the control loop of described two groups of voltage transformers interlocking each other mutually connects.
4. a kind of escalator power-supply system according to claim 1 and 2, it is characterized in that, the control loop of described two groups of voltage transformers also is provided with stop button and stops indicator lamp, described stop button is connected electrically in the input end of described PLC, describedly stops the mouth that indicator lamp is connected electrically in described PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001671.0A CN103193146B (en) | 2012-01-05 | 2012-01-05 | Power supply system of escalator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001671.0A CN103193146B (en) | 2012-01-05 | 2012-01-05 | Power supply system of escalator |
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| CN103193146A true CN103193146A (en) | 2013-07-10 |
| CN103193146B CN103193146B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210001671.0A Active CN103193146B (en) | 2012-01-05 | 2012-01-05 | Power supply system of escalator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151972A (en) * | 2015-08-24 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | Intelligent escalator for public place |
| CN105800440A (en) * | 2016-04-15 | 2016-07-27 | 日立电梯（广州）自动扶梯有限公司 | Escalator running control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05201680A (en) * | 1992-01-28 | 1993-08-10 | Mitsubishi Electric Corp | Controller for passenger conveyor |
| JPH08208170A (en) * | 1995-01-31 | 1996-08-13 | Hitachi Building Syst Eng & Service Co Ltd | Escalator low-speed operation device |
| CN2895365Y (en) * | 2006-04-27 | 2007-05-02 | 药海亮 | Automatic escalator energy-saving device |
| CN201190075Y (en) * | 2007-10-31 | 2009-02-04 | 苏州新达电扶梯部件有限公司 | Drive control system of escalator or moving sidewalk |
| CN101687605A (en) * | 2007-05-02 | 2010-03-31 | 通力股份公司 | Power supply appliance of a transport system |
-
2012
- 2012-01-05 CN CN201210001671.0A patent/CN103193146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05201680A (en) * | 1992-01-28 | 1993-08-10 | Mitsubishi Electric Corp | Controller for passenger conveyor |
| JPH08208170A (en) * | 1995-01-31 | 1996-08-13 | Hitachi Building Syst Eng & Service Co Ltd | Escalator low-speed operation device |
| CN2895365Y (en) * | 2006-04-27 | 2007-05-02 | 药海亮 | Automatic escalator energy-saving device |
| CN101687605A (en) * | 2007-05-02 | 2010-03-31 | 通力股份公司 | Power supply appliance of a transport system |
| CN201190075Y (en) * | 2007-10-31 | 2009-02-04 | 苏州新达电扶梯部件有限公司 | Drive control system of escalator or moving sidewalk |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151972A (en) * | 2015-08-24 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | Intelligent escalator for public place |
| CN105800440A (en) * | 2016-04-15 | 2016-07-27 | 日立电梯（广州）自动扶梯有限公司 | Escalator running control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103193146B (en) | 2015-02-18 |
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