CN204138062U - A kind of variable frequency lifting device - Google Patents
A kind of variable frequency lifting device Download PDFInfo
- Publication number
- CN204138062U CN204138062U CN201420595408.3U CN201420595408U CN204138062U CN 204138062 U CN204138062 U CN 204138062U CN 201420595408 U CN201420595408 U CN 201420595408U CN 204138062 U CN204138062 U CN 204138062U
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- control unit
- motor
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- power supply
- motors
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Abstract
The utility model provides a kind of variable frequency lifting device, comprises power supply, frequency converter, lifting and security control unit, group of motors, motor braking unit and the iron moving cell of motor electromagnetic, and described power supply powers to respectively frequency converter, voltage transformer and rectifier bridge; Control power supply after voltage transformer transformation is powered to lifting and security control unit through magnetic control switch again; Motor braking power supply after rectifier bridge rectification is powered to the iron moving cell of motor electromagnetic after frequency converter and lifting send safety control instruction with security control unit; Open group of motors lift control switch, lifting and security control unit send to frequency converter and rise and fall instruction, the electrical source of power run to the drive motor that group of motors exports different frequency by frequency converter; Converting electric energy is that mechanical energy drives jacking system to run by group of motors.The utility model, by the improvement to jacking system Control system architecture, arranges anti-relay contact adhesion control unit, enhances the safety and reliability of jacking system.
Description
Technical field
The utility model relates to a kind of jacking system, particularly a kind of variable frequency lifting device.
Background technology
Along with the development of society; skyscraper is more and more universal; jacking system is also more universal; the jacking equipment of prior art adopts contact relay control mode usually; realize the direct startup under the full voltage of group of motors, full load state, operation and shutdown; cause jacking system impact serious, significantly weightless sense, starting current cause greatly that line drop is large, running velocity slow and efficiency is low, energy consumption is high; also cause system out of control because often coming in contact the adhesion of formula relay contact, and then cause the damage of personnel or property.
Utility model content
In order to solve the problem, the utility model provides a kind of variable frequency lifting device, comprise power supply, frequency conversion control unit, lifting and security control unit, group of motors, motor braking unit and the iron moving cell of motor electromagnetic, described power supply powers to respectively frequency conversion control unit, voltage transformer and rectifier bridge; Control power supply after voltage transformer transformation is powered to lifting and security control unit through magnetic control switch again; Motor braking power supply after rectifier bridge rectification is powered to the iron moving cell of motor electromagnetic after frequency conversion control unit and lifting send safety control instruction with security control unit; Open group of motors lift control switch, lifting and security control unit send to frequency conversion control unit and rise and fall instruction, the electrical source of power run to the drive motor that group of motors exports different frequency by frequency conversion control unit; Converting electric energy is that mechanical energy drives jacking system to run by group of motors.
Described security control unit comprises anti-relay contact adhesion unit, wrong open-phase protection element, overload protector, velocity limiter, emergency stop switch and zero voltage protection element.
Described group of motors comprises motor M 1 in parallel, motor M 2 and motor M 3.
Described frequency conversion control unit comprises frequency converter, master cock 3SA, contact relay group; Described contact relay group comprises contact relay 3KA, contact relay 4KA and contact relay 5KA.
Described magnetic control switch realizes by magnetic control key the power supply control controlling power supply.
Described motor braking unit comprises motor braking electromagnet, and described motor braking electromagnet comprises motor M 1 brake electromagnet, motor M 2 brake electromagnet and motor M 3 brake electromagnet.
Described anti-relay contact adhesion unit comprises contact relay 6KA, contact relay group with time delay break contact; Described contact relay group comprises contact relay 2KA and contact relay 7KA.
The beneficial effects of the utility model are: 1, the utility model is by the improvement to lifting device structure, the technology upgrading of jacking system is achieved by the fusion of frequency converter and upgrading control system, achieve elevator start to drop to zero-speed from specified running velocity shut down again from linear the rising to when specified running velocity runs or shuts down of zero-speed, eliminate elevator start with when shutting down because impacting the weightless sense brought to passenger; 2, by arranging anti-relay contact adhesion unit and security control unit, make lifting and security control unit realize contact relay contact in system stick together after self-protection, enhance the safety and reliability of elevator.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is frequency converter of the present utility model, group of motors and motor braking element circuit figure;
Fig. 3 is lifting of the present utility model and security control unit circuit diagram;
Fig. 4 is wrong open-phase protection element schematic of the present utility model;
Fig. 5 is illumination of the present utility model and warning circuit schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described.
As shown in Figure 1, a kind of variable frequency lifting device of the present utility model, comprise power supply, frequency conversion control unit, lifting and security control unit, group of motors, motor braking unit and the iron moving cell of motor electromagnetic, power supply powers to respectively frequency conversion control unit, voltage transformer and rectifier bridge; Control power supply after voltage transformer transformation is powered to lifting and security control unit through magnetic control switch again; Motor braking power supply after rectifier bridge rectification is powered to the iron moving cell of motor electromagnetic after frequency conversion control unit and lifting send safety control instruction with security control unit; Open group of motors lift control switch, lifting and security control unit send to frequency conversion control unit and rise and fall instruction, the electrical source of power run to the drive motor that group of motors exports different frequency by frequency conversion control unit; Converting electric energy is that mechanical energy drives jacking system to run by group of motors.
Safety control comprises anti-relay contact adhesion unit, wrong open-phase protection element, overload protector, velocity limiter, emergency stop switch and zero voltage protection element.
Group of motors comprises motor M 1 in parallel, motor M 2 and motor M 3.
Frequency conversion control unit comprises frequency converter, master cock 3SA, contact relay group; Contact relay group comprises contact relay 3KA, contact relay 4KA and contact relay 5KA.
Magnetic control switch realizes by magnetic control key the power supply control controlling power supply.
Motor braking unit comprises motor braking electromagnet, and motor braking electromagnet comprises motor M 1 brake electromagnet, motor M 2 brake electromagnet and motor M 3 brake electromagnet.
Anti-relay contact adhesion unit comprises contact relay 6KA, contact relay group with time delay break contact; Described contact relay group comprises contact relay 2KA and contact relay 7KA.
As shown in Fig. 2 ~ 5, in figure, QS1 is leakage circuit device, SQ is that the limit is spacing, YB1, YB2, YB3 is motor brake coil, BQ is frequency converter, 1QF ~ 5QF is small air circuit breaker, 1KA and 1KM is AC contactor, 2KA ~ 7KA is contact relay, EKA is wrong open phase protector, ZSQ is overload protector, JSN is that cage dismounting is fallen button box, 1SB is scram button, 4SB is toggle switch, F is motor fan, 4SB is lighting switch, 1SA is that operating mode is selected, 2SA, 4SA is for starting, bell push, 3SA is operation control, XC is three-phase Three-hole socket, 11SQ is spacing for slowing down, 10SQ is that low layer keeps power supply spacing, R is braking resistor, CK is magnetic switch, TC is voltage transformer, R1 is current-limiting resistance, V is rectifier diode, D is rectifier bridge (by four 2CZ57M 5A/1000V diodes), 4HL is for controlling power light, 3HL is total power light, 1HL, 2HL is power supply indicator lamp, 8SQ, 9SQ is that cage guard grating is spacing, 6SQ, 7SQ is on cage, lower limit, 4SQ is that roof door is spacing, 3SQ is duplicate rows door limiting, 2SQ is single file door limiting, 1SQ is limiting device micro-switch, ZD is illuminating lamp, DL is buzzer phone, 3SA is master controller, 2SA, 4SA is button switch, 1SA is key switch, SQ is manual reset switch.
As shown in Fig. 3 circuit diagram, the control power supply of variable frequency lifting device is controlled by magnetic switch CK, and master controller 3SA divides four speed levels, is respectively the low speed 1 of rising, high speed 2 and the low speed 3 declined, at a high speed 4,0 expression elevator and stops.Button switch 2SA and AC contactor 1KA realizes zero voltage protection; 11SQ is deceleration limit switch, sends instruction realize height speed control system, the rise and fall of elevator and stop controlling by deceleration limit switch 11SQ, upper limit position switch 6SQ, lower position switch 7SQ and contact relay 3KA, 4KA, 5KA to frequency converter.In safety control, realize emergency engine kill by arranging scram button 1SB, by arranging key switch 1SA.Anti-relay contact adhesion unit is made up of the relevant contacts with the relay of time delay break contact and 3SA control switch, relay 2KA, 7KA; when 2KA, 3KA, 4KA, 5KA, 7KA arbitrary element generation contact adhesion; variable frequency lifting device, all by hard stop, cannot start when stopped status.
As shown in Figure 4, phase shortage is exactly the wherein a certain phase open circuit of normal three phase mains, and make original three-phase equipment cisco unity malfunction, or cause the accident, therefore lifter apparatus needs to arrange phase-lacking protective device.The utility model phase-lacking protective device is connected to the input end of power supply.The utility model is also provided with illumination and warning circuit, as shown in Figure 5, realizes illumination and warning by ZD illuminating lamp and DL buzzer phone.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (7)
1. a variable frequency lifting device, comprise power supply, frequency conversion control unit, lifting and security control unit, group of motors, motor braking unit and the iron moving cell of motor electromagnetic, it is characterized in that: described power supply is powered to frequency conversion control unit, voltage transformer and rectifier bridge respectively; Control power supply after described voltage transformer transformation is powered to lifting and security control unit through magnetic control switch again; Motor braking power supply after rectifier bridge rectification is powered to the iron moving cell of motor electromagnetic after frequency conversion control unit and lifting send safety control instruction with security control unit; Open group of motors lift control switch, lifting and security control unit send to frequency conversion control unit and rise and fall instruction, the electrical source of power run to the drive motor that group of motors exports different frequency by frequency conversion control unit; Converting electric energy is that mechanical energy drives jacking system to run by group of motors.
2. variable frequency lifting device according to claim 1, is characterized in that: described security control unit comprises anti-relay contact adhesion unit, wrong open-phase protection element, overload protector, velocity limiter, emergency stop switch and zero voltage protection element.
3. variable frequency lifting device according to claim 1, is characterized in that: described group of motors comprises motor M 1 in parallel, motor M 2 and motor M 3.
4. variable frequency lifting device according to claim 1, is characterized in that: described frequency conversion control unit comprises frequency converter, master cock 3SA, contact relay group; Described contact relay group comprises contact relay 3KA, contact relay 4KA and contact relay 5KA.
5. variable frequency lifting device according to claim 1, is characterized in that: described magnetic control switch realizes by magnetic control key the power supply control controlling power supply.
6. variable frequency lifting device according to claim 1, it is characterized in that: described motor braking unit comprises motor braking electromagnet, described motor braking electromagnet comprises motor M 1 brake electromagnet, motor M 2 brake electromagnet and motor M 3 brake electromagnet.
7. variable frequency lifting device according to claim 2, is characterized in that: described anti-relay contact adhesion unit comprises contact relay 6KA, contact relay group with time delay break contact; Described contact relay group comprises contact relay 2KA and contact relay 7KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595408.3U CN204138062U (en) | 2014-10-15 | 2014-10-15 | A kind of variable frequency lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595408.3U CN204138062U (en) | 2014-10-15 | 2014-10-15 | A kind of variable frequency lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204138062U true CN204138062U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420595408.3U Expired - Fee Related CN204138062U (en) | 2014-10-15 | 2014-10-15 | A kind of variable frequency lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204138062U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753403A (en) * | 2015-03-31 | 2015-07-01 | 深圳市英威腾电气股份有限公司 | Motor braking control system of construction hoist |
| CN104935150A (en) * | 2015-06-15 | 2015-09-23 | 成都广迈科技有限公司 | Frequency converter |
| CN105155831A (en) * | 2015-10-15 | 2015-12-16 | 江苏京龙工程机械有限公司 | Variable-frequency construction ascending and descending platform |
| CN106516918A (en) * | 2016-04-20 | 2017-03-22 | 福建省力霸机械科技有限公司 | Elevator energy saving device |
-
2014
- 2014-10-15 CN CN201420595408.3U patent/CN204138062U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753403A (en) * | 2015-03-31 | 2015-07-01 | 深圳市英威腾电气股份有限公司 | Motor braking control system of construction hoist |
| CN104753403B (en) * | 2015-03-31 | 2018-05-22 | 深圳市英威腾电气股份有限公司 | A kind of motor internal contracting brake control system of building hoist |
| CN104935150A (en) * | 2015-06-15 | 2015-09-23 | 成都广迈科技有限公司 | Frequency converter |
| CN105155831A (en) * | 2015-10-15 | 2015-12-16 | 江苏京龙工程机械有限公司 | Variable-frequency construction ascending and descending platform |
| CN106516918A (en) * | 2016-04-20 | 2017-03-22 | 福建省力霸机械科技有限公司 | Elevator energy saving device |
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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: 20150204 Termination date: 20181015 |
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| CF01 | Termination of patent right due to non-payment of annual fee |