CN104793073A - Variable frequency escalator (shaft) reversion protection detection jigger test method and device - Google Patents
Variable frequency escalator (shaft) reversion protection detection jigger test method and device Download PDFInfo
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Abstract
The invention discloses a variable frequency escalator (shaft) reversion protection detection jigger test method and device and relates to a device and a method detecting non-manipulation reversion protection system functions of a variable frequency driving automatic escalator (shaft) through a jigger driving mode. According to the detection method, a detected automatic escalator (shaft) is driven in a manual jigger mode through an operating manual jigger device to generate a reversion work condition and accordingly the function of non-operation reversion protection is verified to be valid or not. The detection device comprises a casing, a circuit breaker, a single-phase switch, an alternating current contactor and an equivalent electric motor loading circuit. During detection, the detection device is connected, the problem that a transducer is difficult to start protection when power supply form the driving electric motor is disconnected during the detection process of the variable frequency driven automatic escalator (shaft). The variable frequency escalator (shaft) reversion protection detection jigger test method and device is not limited to modes of the non-operation reversion protection devices and setting modes of detection equipment and is applicable to the variable frequency driven automatic escalator (shaft) in various types.
Description
Technical field
The invention belongs to escalator (road) non-operating reversed defencive function Check and Inspection technical field; be specifically related to one and utilize jiggering mode, the detection method that frequency conversion drive escalator (road) non-operating reversed defencive function is detected and device.
Background technology
Escalator (road) is due to reasons such as non-operating reversed protective device inefficacy and passenger's overload; very easily there is up escalator (road) and reverse suddenly the phenomenon glided; result cause passenger to cause because evacuating in time a large amount of personnel are crowded, the injury accident such as to trample generation, the safety of serious threat passenger.Particularly the reverse accident of Shenzhen Metro stations in 2010 and Beijing Metro station escalator appearance in 2011, was once causing people to the fear taking advantage of (holding up) ladder, and was creating larger public opinion and impact.
So specify that in TSG technical specification of security regularly tackling escalator (road) non-operating reversed defencive function every year detects, and checks its accordance, validity, to guarantee the security of operation in escalator (road).
Jiggering mode is utilized to be carry out in several detection methods of Check and Inspection to non-operating reversed protective device at present, one of form more generally adopted.
When carrying out jiggering mode and detecting; first escalator (road) is started up; then the power supply of drive motor is cut off; stop the running of drive motor; operation hand-barring; drive detected escalator (road) to produce in hand turning mode and reverse operating mode, thus verify the function whether effective method of its non-operating reversed protection.
Above-mentioned jiggering detection method is no problem for the escalator (road) of star-Δ Starting mode, but for the escalator (road) of frequency conversion drive when cutting off the power supply of drive motor, just be equivalent to the output open circuit of frequency converter, frequency converter will because of the output open circuit of itself starting protection, block the power supply to drive motor; Simultaneously also by this signal feedback to the control system in escalator (road), so control system has just cut off control, safety return circuit, forces complete machine out of service, and therefore, then the detection proceeding next step is impossible.In the prior art of current application jiggering mode, Check and Inspection is carried out to frequency conversion drive escalator (road) non-operating reversed defencive function and seems more difficult.
Summary of the invention
For limitation and the deficiency of prior art, one is the object of the present invention is to provide to utilize jiggering mode to detect the apparatus and method of frequency conversion drive escalator (road) non-operating reversed defencive function.
One of the present invention utilizes jiggering mode to detect the device of frequency conversion drive escalator (road) non-operating reversed defencive function, it comprises housing, is provided with isolating switch 1, single-phase switch 2, A.C. contactor 3, equivalent motor load circuit 4 in described housing; The outer panels of described housing is provided with input terminal U1, V1, W1 interface be connected with the inverter output terminal of detected escalator (road), lead-out terminal U2, V2, W2 interface be connected with the drive motor input end of detected escalator (road), and input terminal L1, L3 of being connected with interchange 380V electrical source of power two phase line of detected escalator (road).
In described housing, A.C. contactor 3 is special envelope star contactor or CJ Series AC Contactor, by one group of three-phase moving together contact terminal (11 and 12,13 and 14,15 and 16) and one group of three-phase break contact terminal (21 and 22,23 and 24,25 and 26) form.
The resistor that the coil of described A.C. contactor 3 is connected by two ends and capacitor series connection are protected.
The three-phase equivalent electrical circuit that in described housing, equivalent motor load circuit 4 is made up of the electron device close with detected escalator (road) drive motor correlation parameter.
In described housing, control coil (A1, A2) one end A2 of A.C. contactor 3 is connected with isolating switch 1 one end by single-phase switch 2, and other end A1 is connected with isolating switch 1 other end; Isolating switch 1 one end is connected with input terminal L1, and the other end is connected with input terminal L3, forms the control loop of A.C. contactor 3; Terminal L1, L3 of the control loop of A.C. contactor 3 are connected with two phase lines exchanging 380V electrical source of power before the total power switch of detected escalator (road); One group of three-phase moving together contact 11,13,15 connection corresponding to input terminal U1, V1, W1 respectively of A.C. contactor 3, one group of three-phase moving together contact 12,14,16 connection corresponding to lead-out terminal U2, V2, W2 respectively; One side terminal 22,24,26 connection corresponding to equivalent motor load circuit 4 respectively of one group of three-phase break contact of A.C. contactor 3; Opposite side terminal 21,23,25 connection corresponding to input terminal U1, V1, W1 respectively of one group of three-phase break contact of A.C. contactor 3.
The Cleaning Principle of device of the present invention is:
First between frequency converter and drive motor, this device is accessed according to the corresponding order of connection detected frequency conversion drive escalator (road); Start detected frequency conversion drive escalator (road) up; disconnect the single-phase switch in this device again; operation hand-barring; in hand turning mode first to up direction; and then drive detected escalator (road) to down direction; make it produce reverse operating mode, check with this, judge that whether non-operating reversed defencive function is effective.
Utilize above-mentioned principle when detecting frequency conversion drive escalator (road); in order to solve at drives interrupts motor; frequency converter is not allowed to start autoprotection system because of output open circuit; and not this signal feedback to the control system in escalator (road); just need to allow frequency converter be in normal duty, or under the state making frequency converter be operated in dry run.
Carrying out in above-mentioned testing process, by accessing device of the present invention between the frequency converter and drive motor of detected frequency conversion drive escalator (road), under the state that frequency converter can be made to be operated in dry run, near and, when detecting, protection would not be produced, under complete machine control system can be made to be in normal duty, to ensure proceeding of testing; Thus solve frequency conversion drive escalator (road) in testing process, and when disconnection drive motor is powered, a difficult problem for the own starting protection of frequency converter.
The method utilizing jiggering mode to detect frequency conversion drive escalator (road) non-operating reversed defencive function of the present invention; described trace routine is: start → access this pick-up unit → startup escalator (road) up → operate this pick-up unit → operation hand-barring → detect → remove this pick-up unit → end, specifically comprise:
(1) power supply of detected frequency conversion drive escalator (road) drive motor is cut off;
(2) traffic direction (such as up) of detected frequency conversion drive escalator (road) is selected;
(3) people is for freeing another detent (such as additional brake) of detected frequency conversion drive escalator (road), it is made not play braking action, carry out this detent (such as service brake), and the detection of whole non-operating reversed Protection control system;
(4) direction selectively starts detected frequency conversion drive escalator (road) and runs;
(5) operate hand-barring in the direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes it cross detected frequency conversion drive escalator (road) non-operating reversed pick-up unit trigger action position;
(6) along the reverse direction operation hand-barring of choice direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes the non-operating reversed pick-up unit of detected frequency conversion drive escalator (road) cross along reverse direction trigger action position;
(7) hand-reset fault locking (if there is);
(8) braking action of another detent (such as additional brake) of detected frequency conversion drive escalator (road) is recovered;
(9) people is for freeing detected this detent of frequency conversion drive escalator (road) (such as service brake), make it not play braking action, carry out the detection of another detent (such as service brake) and whole non-operating reversed Protection control system;
(10) carry out once again by the method for step 4 to step 7;
(11) braking action of detected frequency conversion drive escalator (road) this detent (such as service brake) is recovered;
(12) select another traffic direction (such as descending) of detected frequency conversion drive escalator (road), detect by above step;
(13) recover the power supply of detected frequency conversion drive escalator (road) drive motor, starting escalator (road) can normally run.
Wherein, the connection of described pick-up unit and detected frequency conversion drive escalator (road) is:
Disconnect detected frequency conversion drive escalator (road) total power switch, disconnect the three-phase power power-line of input queued switches motor, between the output terminal and the three-phase electrical source of power input end of drive motor of detected escalator (road) frequency converter, access described pick-up unit.
The corresponding connection of output terminal of input terminal U1, V1, W1 of described pick-up unit and frequency converter in the switch board of detected frequency conversion drive escalator (road); Lead-out terminal U2, V2, W2 of described pick-up unit and the corresponding connection of drive motor three-phase electrical source of power input end of detected frequency conversion drive escalator (road); Power input terminal L1, L3 are connected with two phase lines before the total power switch of the electrical source of power of detected frequency conversion drive escalator (road).
Described pick-up unit is just connected to the wiring of power supply and drive motor, does not connect any control signal wire of detected frequency conversion drive escalator (road) system.
Pick-up unit of the present invention, after being connected with detected escalator (road), the principle of work of this device circuit is:
Close circuit breaker 1, because single-phase switch 2 is in closed, contactor 3 obtains electric adhesive, moving together contact (11 and 12,13 and 14, the 15 and 16) conducting of its contactor 3.At this moment the frequency converter active force circuit in detected escalator (road) switch board and drive motor conducting.
If now escalator (road) can startup optimization, so the output current of this escalator (road) frequency converter just can be input in drive motor load winding by the moving together contact of contactor 3, drive motor rotates, and escalator (road) just can normal operation input.
The break contact (21 and 22,23 and 24,25 and 26) of contactor 3 disconnects simultaneously, and equivalent motor load circuit 4 disconnects with the active force power circuit of the frequency converter of detected escalator (road).
During detection, after disconnection single-phase switch 2, A.C. contactor 3 control loop dead electricity, break contact (21 and 22,23 and 24, the 25 and 26) conducting of A.C. contactor 3.At this moment frequency converter active force power circuit and equivalent motor load circuit 4 conducting of escalator (road) is detected, that is to say that frequency converter output circuit is connected to equivalent motor load circuit 4, under at this moment frequency converter is in the duty of dry run.
Meanwhile, the break contact (11 and 12,13 and 14,15 and 16) of A.C. contactor 3 disconnects, and has cut off detected escalator (road) power supply between frequency converter and drive motor, has made drive motor dead electricity, shut down.
Compared with prior art, the present invention has following characteristics and advantages:
(1) carrying out in the process detected, the equivalent motor load exported as frequency converter due to the equivalent motor load circuit accessing apparatus of the present invention is treated, solve when disconnecting drive motor winding, the phenomenon of the frequency converter module damage caused because of inverter output terminal open circuit; Meanwhile, the emergency protection problem that frequency converter causes because of output open circuit is also solved.
(2) realization of the present invention is not by any non-operating reversed protective device form of detected equipment, and the restriction of set-up mode.
(3) applicability of the present invention is wide, is applicable to detect the frequency conversion drive escalator (road) of various model.
(4) the present invention is to the actuating unit of frequency conversion drive escalator (road) non-operating reversed protection system---the feasible scheme that service brake and additional brake detect respectively, compensate in prior art the deficiency not distinguishing detection.
Accompanying drawing explanation
Fig. 1 is trace routine block diagram of the present invention.
Fig. 2 is the electrical schematic diagram of pick-up unit of the present invention.
In figure, it is as follows that the numbering of each several part and label symbol represent meaning: 1-three-phase breaker, the single-phase normally closed switch of 2-, 3-A.C. contactor, 4-equivalent motor load circuit, U1, V1, W1-input terminal, this device connects the output terminal of detected frequency conversion drive escalator (road) frequency converter, U2, V2, W2-lead-out terminal, this device connects the input end of detected escalator (road) drive motor, and L1, L3-exchange 380V two-phase electrical source of power input end.
Embodiment
Embodiment:
One utilizes jiggering mode to detect the device of frequency conversion drive escalator (road) non-operating reversed defencive function, comprises housing, is provided with isolating switch 1, single-phase switch 2, A.C. contactor 3, equivalent motor load circuit 4 in housing; The outer panels of described housing is provided with input terminal U1, V1, W1 interface be connected with the inverter output terminal of detected escalator (road); Lead-out terminal U2, V2, W2 interface be connected with the drive motor input end of detected escalator (road); And input terminal L1, the L3 to be connected with interchange 380V electrical source of power two phase line of detected escalator (road).
In described housing, A.C. contactor 3 is special envelope star contactor or CJ Series AC Contactor, there are one group of three-phase moving together contact terminal (11,12,13,14,15,16) and one group of three-phase break contact terminal (21,22,23,24,25,26) form.The resistor that the coil of A.C. contactor 3 is connected by two ends and capacitor series connection are protected.
The three-phase equivalent electrical circuit that in described housing, equivalent motor load circuit 4 is made up of the electron device close with detected escalator (road) drive motor correlation parameter.
The circuit of the device each several part element provided connects, and comprising:
In described housing, control coil (A1, A2) one end A2 of A.C. contactor 3 is connected with isolating switch 1 one end by single-phase switch 2; Other end A1 is connected with isolating switch 1 other end; Isolating switch 1 one end is connected with input terminal L1, and the other end is connected with input terminal L3, forms the control loop of A.C. contactor 3.
Terminal L1, L3 of the control loop of described A.C. contactor 3 are connected with two phase lines exchanging 380V electrical source of power before the total power switch of detected escalator (road).
One group of three-phase moving together contact 11,13,15 connection corresponding to input terminal U1, V1, W1 respectively of described A.C. contactor 3, one group of three-phase moving together contact 12,14,16 connection corresponding to lead-out terminal U2, V2, W2 respectively.
One side terminal 22,24,26 connection corresponding to equivalent motor load circuit 4 respectively of one group of three-phase break contact of described A.C. contactor 3; Opposite side terminal 21,23,25 connection corresponding to input terminal U1, V1, W1 respectively of one group of three-phase break contact of A.C. contactor 3.
The connection of pick-up unit and detected escalator (road):
Disconnect detected escalator (road) total power switch, disconnect the three-phase power power-line of input queued switches motor, between the output terminal and the three-phase electrical source of power input end of drive motor of detected escalator (road) frequency converter, access this device.
The corresponding connection of output terminal of input terminal U1, V1, W1 of this device and frequency converter in the switch board of detected frequency conversion drive escalator (road); Lead-out terminal U2, V2, W2 of this device and the corresponding connection of drive motor three-phase electrical source of power input end of detected frequency conversion drive escalator (road); Power input terminal L1, L3 are connected with two phase lines before the total power switch of the electrical source of power of detected frequency conversion drive escalator (road).
This device is just connected to the active force power supply wiring of power supply and drive motor, is disconnected the power supply of drive motor during detection; Do not connect any control signal wire of detected frequency conversion drive escalator (road) control system, can not change any control signal of the control system of detected frequency conversion drive escalator (road) itself yet.
Jiggering mode is utilized to detect the method for frequency conversion drive escalator (road) non-operating reversed defencive function; described trace routine is: start → access this pick-up unit → startup escalator (road) up → operate this pick-up unit → operation hand-barring → detect → remove this pick-up unit → end, specifically comprise:
(1) power supply of detected frequency conversion drive escalator (road) drive motor is cut off;
(2) traffic direction (such as up) of detected frequency conversion drive escalator (road) is selected;
(3) people is for freeing another detent (such as additional brake) of detected frequency conversion drive escalator (road), it is made not play braking action, carry out this detent (such as service brake), and the detection of whole non-operating reversed Protection control system;
(4) direction selectively starts detected frequency conversion drive escalator (road) and runs;
(5) operate hand-barring in the direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes it cross detected frequency conversion drive escalator (road) non-operating reversed pick-up unit trigger action position;
(6) along the reverse direction operation hand-barring of choice direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes the non-operating reversed pick-up unit of detected frequency conversion drive escalator (road) cross along reverse direction trigger action position;
(7) hand-reset fault locking (if there is);
(8) braking action of another detent (such as additional brake) of detected frequency conversion drive escalator (road) is recovered;
(9) people is for freeing detected this detent of frequency conversion drive escalator (road) (such as service brake), make it not play braking action, carry out the detection of another detent (such as service brake) and whole non-operating reversed Protection control system;
(10) carry out once again by the method for step 4 to step 7;
(11) braking action of detected frequency conversion drive escalator (road) this detent (such as service brake) is recovered;
(12) select another traffic direction (such as descending) of detected frequency conversion drive escalator (road), detect by above step;
(13) recover the power supply of detected frequency conversion drive escalator (road) drive motor, starting escalator (road) can normally run.
The above embodiment just conveniently understands the present invention; be not intended to limit the present invention; for a person skilled in the art, every done without departing from the spirit and concept in the present invention any amendment, replacement, improvement etc., all within protection scope of the present invention.
Claims (6)
1. the device utilizing jiggering mode to detect frequency conversion drive escalator (road) non-operating reversed defencive function, it is characterized in that, described device comprises housing, is provided with isolating switch 1, single-phase switch 2, A.C. contactor 3, equivalent motor load circuit 4 in described housing; The outer panels of described housing is provided with input terminal U1, V1, W1 interface be connected with the inverter output terminal of detected escalator (road), lead-out terminal U2, V2, W2 interface be connected with the drive motor input end of detected escalator (road), and input terminal L1, L3 of being connected with interchange 380V electrical source of power two phase line of detected escalator (road).
2. a kind of pick-up unit according to claim 1, it is characterized in that, in described housing, A.C. contactor 3 is special envelope star contactor or CJ Series AC Contactor, by one group of three-phase moving together contact terminal (11 and 12,13 and 14,15 and 16) and one group of three-phase break contact terminal (21 and 22,23 and 24,25 and 26) composition.
3. a kind of pick-up unit according to claim 1, is characterized in that, the resistor that the coil of A.C. contactor 3 is connected by two ends and capacitor series connection are protected.
4. a kind of pick-up unit according to claim 1, is characterized in that, the three-phase equivalent electrical circuit that in described housing, equivalent motor load circuit 4 is made up of the electron device close with detected escalator (road) drive motor correlation parameter.
5. a kind of test unit according to claim 1, is characterized in that, in described housing, control coil (A1, A2) one end A2 of A.C. contactor 3 is connected with isolating switch 1 one end by single-phase switch 2, and other end A1 is connected with isolating switch 1 other end; Isolating switch 1 one end is connected with input terminal L1, and the other end is connected with input terminal L3, forms the control loop of A.C. contactor 3; Terminal L1, L3 of the control loop of A.C. contactor 3 are connected with two phase lines exchanging 380V electrical source of power before the total power switch of detected escalator (road); One group of three-phase moving together contact 11,13,15 connection corresponding to input terminal U1, V1, W1 respectively of A.C. contactor 3, one group of three-phase moving together contact 12,14,16 connection corresponding to lead-out terminal U2, V2, W2 respectively; One side terminal 22,24,26 connection corresponding to equivalent motor load circuit 4 respectively of one group of three-phase break contact of A.C. contactor 3; Opposite side terminal 21,23,25 connection corresponding to input terminal U1, V1, W1 respectively of one group of three-phase break contact of A.C. contactor 3.
6. utilize jiggering mode to detect a method for frequency conversion drive escalator (road) non-operating reversed defencive function, it is characterized in that, described method comprises:
(1) power supply of detected frequency conversion drive escalator (road) drive motor is cut off;
(2) traffic direction (such as up) of detected frequency conversion drive escalator (road) is selected;
(3) people is for freeing another detent (such as additional brake) of detected frequency conversion drive escalator (road), it is made not play braking action, carry out this detent (such as service brake), and the detection of whole non-operating reversed Protection control system;
(4) direction selectively starts detected frequency conversion drive escalator (road) and runs;
(5) operate hand-barring in the direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes it cross detected frequency conversion drive escalator (road) non-operating reversed pick-up unit trigger action position;
(6) along the reverse direction operation hand-barring of choice direction, the dynamic detected frequency conversion drive escalator (road) of dish, makes the non-operating reversed pick-up unit of detected frequency conversion drive escalator (road) cross along reverse direction trigger action position;
(7) hand-reset fault locking (if there is);
(8) braking action of another detent (such as additional brake) of detected frequency conversion drive escalator (road) is recovered;
(9) people is for freeing detected this detent of frequency conversion drive escalator (road) (such as service brake), make it not play braking action, carry out the detection of another detent (such as service brake) and whole non-operating reversed Protection control system;
(10) carry out once again by the method for step 4 to step 7;
(11) braking action of detected frequency conversion drive escalator (road) this detent (such as service brake) is recovered;
(12) select another traffic direction (such as descending) of detected frequency conversion drive escalator (road), detect by above step;
(13) recover the power supply of detected frequency conversion drive escalator (road) drive motor, starting escalator (road) can normally run.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140663.8A CN104793073A (en) | 2015-03-26 | 2015-03-26 | Variable frequency escalator (shaft) reversion protection detection jigger test method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510140663.8A CN104793073A (en) | 2015-03-26 | 2015-03-26 | Variable frequency escalator (shaft) reversion protection detection jigger test method and device |
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| CN104793073A true CN104793073A (en) | 2015-07-22 |
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| CN201510140663.8A Pending CN104793073A (en) | 2015-03-26 | 2015-03-26 | Variable frequency escalator (shaft) reversion protection detection jigger test method and device |
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| CN (1) | CN104793073A (en) |
Cited By (1)
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| CN108957189A (en) * | 2018-07-19 | 2018-12-07 | 河南省特种设备安全检测研究院 | The detection experimental rig and method of the non-operating reversed defencive function of escalator |
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| CN102680822A (en) * | 2012-05-10 | 2012-09-19 | 广东省珠海市特种设备检验所 | Method and device for detecting overspeed and nonmanipulated reversal protection function of automatic stair/way |
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| CN102680822A (en) * | 2012-05-10 | 2012-09-19 | 广东省珠海市特种设备检验所 | Method and device for detecting overspeed and nonmanipulated reversal protection function of automatic stair/way |
| CN103395680A (en) * | 2013-08-13 | 2013-11-20 | 深圳市特种设备安全检验研究院 | Method for testing braking capacity of escalator and/or moving pavement |
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| CN108957189A (en) * | 2018-07-19 | 2018-12-07 | 河南省特种设备安全检测研究院 | The detection experimental rig and method of the non-operating reversed defencive function of escalator |
| CN108957189B (en) * | 2018-07-19 | 2020-06-23 | 河南省特种设备安全检测研究院 | Detection test device and method for non-operation reverse rotation protection function of escalator |
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