CN105502121B - Elevator hoisting motor lacks the active detecting device and its detection method of two-phase - Google Patents
Elevator hoisting motor lacks the active detecting device and its detection method of two-phase Download PDFInfo
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- CN105502121B CN105502121B CN201610050956.1A CN201610050956A CN105502121B CN 105502121 B CN105502121 B CN 105502121B CN 201610050956 A CN201610050956 A CN 201610050956A CN 105502121 B CN105502121 B CN 105502121B
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- phase
- elevator
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- normally open
- open contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention provides a kind of active detecting device of the scarce two-phase of elevator hoisting motor, it is characterised in that：Including elevator operation frequency converter P, elevator operation contactor S and current detector A, there are three normally open contacts for elevator operation contactor tool, respectively the first normally open contact S1, the second normally open contact S2 and third normally open contact S3, the U phases that first normally open contact S1, the second normally open contact S2 are separately connected three phase electric machine M with one end of third normally open contact S3 three are held, V phases are held and held with W phases, the other end of three is separately connected the A phases, B phases and C phases of three phase mains, current detector A connects with three phase electric machine M, output end connection operation frequency converter P.It is detected the active detecting that motor can be completed and lack two-phase by controlling elevator operation contactor S break-makes and the disconnected electric currents for flowing through three phase electric machine in the process of current detector A; detection structure is extremely simple; elevator reliability of operation can be improved after use; it reduces elevator to close the probability of people and reduce the action frequency of Machine guarding, the harm that accident occurs is minimized.
Description
Technical field
The invention belongs to elevator technology fields, and in particular to a kind of elevator hoisting motor lack two-phase active detecting device and
Its detection method.
Background technology
Under control of the control system, driving traction machine forward or reverse, when motor lacks a phase, frequency converter detects frequency converter
It reports an error to overcurrent；When motor lacks two-phase, frequency converter cannot detect overcurrent, since frequency converter cannot detect electric current,
Once controller receives instruction, meet entry condition, be immediately performed a series of action, finally operation contactor made to act, embraces
Lock contactor acts, and elevator is by the state in free car slipping under portative effect in place, although existing technology can also lead to
It is inconsistent and judge to cross target velocity that comparison coder detects that speed and elevator are run, but elevator has been started up,
It is final the result is that elevator is out of service in NOT gate area, this safeguard measure is also to allow in existing elevator manufacturer's standard
, but be the passive measure after a kind of break down, still result in two kinds of accidents：First, elevator stops in NOT gate area
Operation, elevator are forbidden opening the door, and cause to close occurrences in human life event；Second is that when the free car slipping speed of elevator is excessively high, lead to mechanical device（For example it limits
Fast device, safety tongs, rope brake etc.）Action.
Invention content
In order to solve the above technical problems, the present invention provides a kind of elevator hoisting motor lack two-phase active detecting device and
It is detected, and active detecting is pinpointed the problems, and elevator reliability of operation can be improved after use, is reduced elevator and is closed the probability of people and subtract
The action frequency of few Machine guarding, the harm that accident occurs is minimized.
In order to achieve the above objectives, technical scheme is as follows：A kind of elevator hoisting motor lacks the active detecting of two-phase
Device, it is characterised in that：Including elevator operation frequency converter P, elevator operation contactor S and current detector A, the elevator operation
Contactor has there are three normally open contact, respectively the first normally open contact S1, the second normally open contact S2 and third normally open contact S3, the
One end of one normally open contact S1, the second normally open contact S2 and third normally open contact S3 three are separately connected the U phases of three phase electric machine M
End, V phases are held and are held with W phases, and the other end of three is separately connected the A phases of three phase mains, B phases and C phases, the current detector A with
Three phase electric machine M series connection, output end connect the operation frequency converter P.
In a preferred embodiment of the present invention, further comprise that the three phase electric machine M is synchronous motor.
In a preferred embodiment of the present invention, further comprise that the three phase electric machine M is asynchronous machine.
In order to achieve the above objectives, technical scheme is as follows：A kind of detection using described in claim 1 or 3 fills
Set the detection method that two-phase is lacked to elevator hoisting motor, which is characterized in that include the following steps：Elevator operation contactor S first
It is closed, the actual current I of motor is detected by current detector A, compare the sky of actual current I and asynchronous three phase electric machine M tunings
Carry electric current I0If I=0 or I are far smaller than I0, illustrate that three phase electric machine M no currents pass through, it can be determined that three phase electric machine M at this time
Lack two-phase（Or more）, at this point, reporting failure by frequency converter P, avoid band-type brake from opening, elevator is now in an area.
In order to achieve the above objectives, technical scheme is as follows：A kind of detection using described in claims 1 or 22 fills
Set the detection method that two-phase is lacked to elevator hoisting motor, which is characterized in that include the following steps：First, elevator operation contactor S
After closure, by the detection voltage of the duration 0.6S of frequency converter P outputs 10%, the three-phase electricity of motor is detected by current detector A
Whether stream is balanced by comparing three-phase current to determine whether lacking two-phase：If three-phase balance, elevator normally starts；Instead
It reports failure at once if three-phase current unbalance, and band-type brake is avoided to open, and elevator is now in an area.
The beneficial effects of the invention are as follows:The elevator hoisting motor of the present invention lacks the active detecting device of two-phase, only by
The electric current that three phase electric machine is flowed through in the break-make and current detector make and break process of control elevator operation contactor is detected
The active detecting that motor lacks two-phase is completed, detection structure is extremely simple, and elevator reliability of operation can be improved after use, reduces
Elevator closes the probability of people and reduces the action frequency of Machine guarding, and the harm that accident occurs is minimized.
Description of the drawings
Technical solution in technology in order to illustrate the embodiments of the present invention more clearly, in being described below to embodiment technology
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the present invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the circuit structure diagram of the preferred embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1, disclosing a kind of active detecting device of the scarce two-phase of elevator hoisting motor, including electricity in the present embodiment
Ladder operation frequency converter P, elevator operation contactor S and current detector A, the elevator operation contactor tool are touched there are three normally opened
Head, respectively the first normally open contact S1, the second normally open contact S2 and third normally open contact S3, the first normally open contact S1, second are often
The U phases that open contact S2 is separately connected three phase electric machine M with one end of third normally open contact S3 three are held, V phases are held and held with W phases, three
The other end be separately connected the A phases, B phases and C phases of three phase mains, the current detector A connects with three phase electric machine M, exports
End connects the operation frequency converter P.
Based on above structure, the method for active detecting is as follows：The present invention is asynchronous as the three phase electric machine M of embodiment one
When three phase electric machine, after elevator operation contactor S is closed, the actual current I of motor is detected by current detector A, it is relatively practical
The no-load current I of electric current I and asynchronous machine tuning0If I=0 or I are far smaller than I0, illustrate that motor no current passes through, it can be with
Judge that three phase electric machine M lacks two-phase at this time（Or more）, at this point, by frequency converter report failure, avoid band-type brake from opening, elevator is located at this time
Yu Menqu, door-opened elevator avoid closing occurrences in human life event.
Embodiment two,
The difference between this embodiment and the first embodiment lies in three phase electric machine M is synchronous motor, the method for active detecting is as follows：
After elevator operation contactor S is closed, by the detection voltage of the duration 0.6S of frequency converter P outputs 10%, pass through current detector A
Whether the three-phase current for detecting motor is balanced by comparing three-phase current to determine whether lacking two-phase：If three-phase balance,
Elevator normally starts；, whereas if three-phase current unbalance, then report failure at once, band-type brake is avoided to open, elevator is now in door
Area, door-opened elevator avoid closing occurrences in human life event.
Therefore, elevator hoisting motor of the invention lacks the active detecting device of two-phase, is connect only by control elevator operation
Tentaculum S break-makes and the disconnected electric currents for flowing through three phase electric machine in the process of current detector A, which are detected, can be completed the scarce two-phase of motor
Active detecting, detection structure is extremely simple, can improve elevator reliability of operation after use, reduce elevator close people probability and
The action frequency for reducing Machine guarding minimizes the harm that accident occurs.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (5)
1. a kind of elevator hoisting motor lacks the active detecting device of two-phase, it is characterised in that：Including elevator operation frequency converter (P),
Elevator operation contactor (S) and current detector (A), elevator operation contactor tool is there are three normally open contact, and respectively the
One normally open contact (S1), the second normally open contact (S2) and third normally open contact (S3), the first normally open contact (S1), second it is normally opened touch
The U phases that head (S2) is separately connected three phase electric machine (M) with one end of third normally open contact (S3) three are held, V phases are held and held with W phases, and three
The other end of person is separately connected the A phases, B phases and C phases of three phase mains, and the current detector (A) is connected with three phase electric machine (M),
Its output end connects the operation frequency converter (P).
2. elevator hoisting motor according to claim 1 lacks the active detecting device of two-phase, it is characterised in that：The three-phase
Motor (M) is synchronous motor.
3. elevator hoisting motor according to claim 1 lacks the active detecting device of two-phase, it is characterised in that：The three-phase
Motor (M) is asynchronous machine.
4. a kind of detection device using described in claim 1 or 3 lacks elevator hoisting motor the detection method of two-phase, feature
It is, includes the following steps：Elevator operation contactor (S) is closed first, and the practical electricity of motor is detected by current detector (A)
I is flowed, compares actual current I and the no-load current I0 of asynchronous three phase electric machine (M) tuning is said if I=0 or I are far smaller than I0
Bright three phase electric machine (M) no current passes through, it can be determined that three phase electric machine (M) lacks two-phase or more at this time, at this point, passing through frequency converter
(P) failure is reported, avoids band-type brake from opening, elevator is now in an area.
5. a kind of detection device using described in claims 1 or 22 lacks elevator hoisting motor the detection method of two-phase, feature
It is, includes the following steps：First, after elevator operation contactor (S) is closed, pass through the duration of frequency converter (P) output 10%
The detection voltage of 0.6S detects the three-phase current of motor by current detector (A), comes by comparing whether three-phase current balances
Judge whether to lack two-phase：If three-phase balance, elevator normally starts；, whereas if three-phase current unbalance, then report at once
Failure avoids band-type brake from opening, and elevator is now in an area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050956.1A CN105502121B (en) | 2016-01-26 | 2016-01-26 | Elevator hoisting motor lacks the active detecting device and its detection method of two-phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050956.1A CN105502121B (en) | 2016-01-26 | 2016-01-26 | Elevator hoisting motor lacks the active detecting device and its detection method of two-phase |
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| Publication Number | Publication Date |
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| CN105502121A CN105502121A (en) | 2016-04-20 |
| CN105502121B true CN105502121B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610050956.1A Active CN105502121B (en) | 2016-01-26 | 2016-01-26 | Elevator hoisting motor lacks the active detecting device and its detection method of two-phase |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205312812U (en) * | 2016-01-26 | 2016-06-15 | 无锡新纺欧迪诺电梯有限公司 | Elevator tows motor and lacks double -phase initiative detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030502A (en) * | 1987-07-08 | 1989-01-18 | 莫家华 | Electromagnetic sensing type protection principle for 3-phase motor |
| CN2387648Y (en) * | 1997-06-18 | 2000-07-12 | 潘阔海 | Phase loss protector for three-phase power source |
| CN101752830A (en) * | 2008-12-06 | 2010-06-23 | 李薇薇 | Open-phase protection contactor |
| CN102004224B (en) * | 2009-08-31 | 2012-12-12 | 比亚迪股份有限公司 | Three-phase motor phase failure detection system and detection method thereof |
| CN102035180A (en) * | 2010-12-07 | 2011-04-27 | 河南省电力公司许昌供电公司 | Comprehensive protection device for three-phase alternating current asynchronous motor |
| JP2015226403A (en) * | 2014-05-29 | 2015-12-14 | 日本高圧電気株式会社 | Phase loss prevention circuit |
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2016
- 2016-01-26 CN CN201610050956.1A patent/CN105502121B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205312812U (en) * | 2016-01-26 | 2016-06-15 | 无锡新纺欧迪诺电梯有限公司 | Elevator tows motor and lacks double -phase initiative detection device |
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| CN105502121A (en) | 2016-04-20 |
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