CN103253588B - Additional brake power failure time-delay operation device - Google Patents
Additional brake power failure time-delay operation device Download PDFInfo
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- CN103253588B CN103253588B CN201310170703.4A CN201310170703A CN103253588B CN 103253588 B CN103253588 B CN 103253588B CN 201310170703 A CN201310170703 A CN 201310170703A CN 103253588 B CN103253588 B CN 103253588B
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Abstract
The invention discloses an additional brake power failure time-delay operation device which comprises a power source connected with a circuit, a work brake (9), an additional brake (8), a first safety return circuit switch (6), a second safety return circuit switch (7), a main controller (10), a first power source detecting relay (1) and a capacitance stored energy return circuit (11), wherein the first power source detecting relay (1) is used for detecting the power source. When the power source works normally, the capacitance stored energy return circuit (11) and the additional brake (8) are disconnected. When the power source is cut off, the capacitance stored energy return circuit (11) provides short-time energy for the additional brake (8) to achieve time-delay operation of the additional brake. The additional brake power failure time-delay operation device enables the additional brake to operate in a time delay mode relative to the work brake under the circumstance that an escalator and an automatic pavement do not require the additional brake to operate when power is cut off suddenly, requirements for the braking and stopping distance can be met, serious impact is not generated, the additional brake operates instantly, and safety is ensured. The time-delay operation device has the advantages of being high in charging speed and low in cost.
Description
Technical field
The present invention relates to a kind of additional brake control device for escalator and Travelator system.
Background technology
When up-to-date " manufacture and the installation safety standard of escalator and moving sidewalk " GB16899-2011 5.4.2.2.2 defines additional brake action, need not ensure the braking distance (see 5.4.2.1.3) required by service brake.Therefore producer is when designing additional brake, for can stop escalator or moving sidewalk effectively, seldom can consider the requirement of additional brake to escalator or moving sidewalk braking distance.But at 5.4.2.2.5 clause regulation: if power failure or safety return circuit dead electricity, allow additional brake and service brake action simultaneously, now stop condition should meet the regulation of escalator or moving sidewalk braking distance.Otherwise, synchronization action additional brake and service brake only allow when hypervelocity 1.4 times or reverse.
For security consideration, the additional brake of most of producers design is dead electricity braking, i.e. brake action during power-off, on the other hand, also specify in standard additional brake when hypervelocity 1.4 times or reverse must action immediately, deliberate time delay can not be had.Therefore actual situation is additional brake does not consider braking distance requirement when designing, in staircase running time power failure (as power cut-off), additional brake inevitable action, just must meet the 5.4.2.2.5 clause in standard: power failure or safety return circuit dead electricity, service brake and additional brake action simultaneously, now stop condition should meet the regulation of braking distance.
For solving above-mentioned contradiction, the requirement of braking distance is not met when additional brake designs, action immediately then it only allows when hypervelocity 1.4 times or reverses, and in other situations such as power cut-off, all do not allow service brake and additional brake action simultaneously.
So when dead electricity, service brake is action immediately, makes additional brake action by technological means time delay, makes the braking distance of escalator or moving sidewalk meet regulation.A kind of conventional method is powered to additional brake by UPS uninterrupted power source, when UPS after staircase power-off still gives additional brake short-duration power, reach the first action stop escalator of service brake or moving sidewalk, and the object of additional brake deferred action.But the cost of the method one side UPS is higher, on the other hand, the time that UPS charging needs one section are longer, UPS battery electricity is caused to give out light if escalator or moving sidewalk are stopped transport for a long time, put into operation in first time and namely run into power failure soon, the object of additional brake deferred action just can not reach.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, make the device of additional brake deferred action after providing a kind of power failure of low cost, this device should meet the requirement of escalator and moving sidewalk action immediately when generation hypervelocity 1.4 times or reverse when normal work simultaneously.
The present invention solves the problems of the technologies described above by the following technical solutions:
A kind of Additional brake power failure time-delay operation device, comprise connection power supply in circuit, service brake, additional brake, the first safety chain switches, the second safety chain switches, master controller, described first safety chain switches is for cutting off additional brake and service brake, and described second safety chain switches is for cutting off service brake; The action of described main controller controls service brake and additional brake, also comprise the first power detecting relay for detecting power supply and electric capacity energy storage loop, when power supply is normal, electric capacity energy storage loop and additional brake disconnect, when power cut-off, electric capacity energy storage loop provides short-time energy to additional brake, realizes the deferred action of additional brake.
As a preferred technical solution of the present invention: also comprise second source and detect relay, is connected with the first safety chain switches after the normally opened contact series connection of described first and second power detecting relays, the normally-closed contact of the first and second power detecting relays is connected into additional brake after series capacitance energy storage loop respectively.
As a preferred technical solution of the present invention: described electric capacity energy storage loop comprises the diode, charging current limiter resistance and the charging capacitor that connect successively.
As a preferred technical solution of the present invention: when described diode is used for preventing power cut-off, energy storage loop is to the first and second relay feeds.
As a preferred technical solution of the present invention: the capacitance of described charging capacitor can maintain additional brake continuous firing 0.5 to 3 second.
As a preferred technical solution of the present invention: the dead electricity of described first and second power detecting relays is less than the dead electricity release time of additional brake release time respectively.
As a preferred technical solution of the present invention: also comprise the feedback contact for additional brake, electric capacity energy storage loop is made to determine whether to need access delay accumulation of energy function according to the operating state of additional brake before power-off.
As a preferred technical solution of the present invention: also comprise the time delay break contact for the first power detecting relay, described time delay break contact and the first power detecting relay are only connected within the short time of power cut-off.
As a preferred technical solution of the present invention: one end of described feedback contact is connected with the normally-closed contact of the first power detecting relay, and the other end of feedback contact is connected with one end of additional brake.
As a preferred technical solution of the present invention: one end of described time delay break contact is connected with the normally-closed contact of the first power detecting relay, and the other end of time delay break contact is connected with one end of additional brake.
The present invention enable escalator and moving sidewalk when suddenly to have a power failure etc. do not require additional brake action, make additional brake relative to service brake deferred action, meet the requirement of braking distance, emergent stopping can not produce too large impact to escalator or moving sidewalk; Under the condition simultaneously normally worked at escalator or moving sidewalk, once the situation that discovery system has hypervelocity 1.4 times or reverses, additional brake action immediately can be made, thus do not reduce the performance of additional brake, ensure security.Device of the present invention is compared with other technology, have the advantages that charging rate is fast, with low cost, only increase by two power detecting relays and electric capacity energy storage loop, the power cut off delay break function of additional brake can be realized, do not affect again performance when additional brake normally works simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of Additional brake power failure time-delay operation device of the present invention.
Fig. 2 is the structure chart of increase additional brake feedback contact of the present invention.
Fig. 3 is the structure chart that the time delay break contact of series connection first relay of the present invention enters electric capacity energy storage loop.
Wherein Symbol explanation: 1-first power detecting relay, the normally-closed contact of 1A-first power detecting, the normally opened contact of 1B-first power detecting, 1C-time delay break contact, 2-second source detects relay, 2A-second source detects the normally-closed contact of relay, 2B-second source detects the normally opened contact of relay, 3-diode, 4-charging current limiter resistance, 5-charging capacitor, 6-first safety chain switches, 7-second safety chain switches, 8-additional brake, 9-service brake, 10-master controller, 10A-first control relay, 10B-second control relay, 11-electric capacity energy storage loop, 12-feedback contact.
Detailed description of the invention
The present invention devises a kind of Additional brake power failure time-delay operation device, comprise connection power supply in circuit, service brake 9, additional brake 8, first safety chain switches 6, second safety chain switches 7, master controller 10, wherein master controller 10 comprises the first control relay 10A and the second control relay 10B; Described first safety chain switches 6 is for cutting off additional brake 8 and service brake 9, second safety chain switches 7 is for cutting off service brake 9, master controller 10 controls the action of service brake 9 and additional brake 8, also comprise the first power detecting relay for detecting power supply and electric capacity energy storage loop 11, when power supply is normal, electric capacity energy storage loop 11 and additional brake disconnect, when power cut-off, electric capacity energy storage loop 11 provides short-time energy to additional brake, realizes the deferred action of additional brake.
As shown in Figure 1, a kind of specific embodiment of deferred action device of the present invention, comprise connection power supply in circuit, service brake 9, additional brake 8, first safety chain switches 6, second safety chain switches 7, master controller 10, wherein master controller 10 comprises the first control relay 10A and the second control relay 10B; One end of power supply is connected with the first safety chain switches 6; Described first safety chain switches 6 is connected with the second safety chain switches 7, additional brake 8 respectively; Described first control relay 10A is connected with additional brake 8, and described second control relay 10B is connected with service brake 9; Described first control relay 10A is connected with the other end of power supply respectively with the second control relay 10B, also comprises the first power detecting relay 1 for detecting power supply and for providing the electric capacity energy storage loop 11 of short-time energy; Described first power detecting relay 1 connect with electric capacity energy storage loop 11 after the normally opened contact 1B of the first power detecting relay 1 be connected with the first safety chain switches 6, the normally-closed contact 1A of the first power detecting relay 1 is connected with additional brake 8.
When being connected into second source and detecting relay 2, normally opened contact 1B, 2B of first and second power detecting relays are connected into additional brake 8 after connecting and entering normally-closed contact 1A, 2A series capacitance energy storage loop 11 of the first safety chain switches 6, first and second power detecting relay.Namely the first power detecting relay 1 normally opened contact 1B detects the normally opened contact 2B of relay 2 with second source, one end of the first safety chain switches 6 is connected successively; When dump and the first power detecting relay 1, second source detect relay 2 when all disconnecting, described electric capacity energy storage loop 11 is connected with additional brake 8 deferred action realizing additional brake by normally-closed contact 1A, the normally opened contact 1B of the first power detecting relay 1.
Make to enter for the first power detecting relay 1 of power detecting, normally opened contact 1B, 2B series connection of second source detection relay 2 left side that first safety chain switches 6 accesses additional brake 8; Also access the left side of additional brake 8 after the normally-closed contact 1A of the first power detecting relay 1 is in parallel with the first safety chain switches 6, second source detects the normally-closed contact 2A of relay 2 and the first control relay 10A other end accessing additional brake 8 afterwards in parallel of additional brake 8 on staircase master controller 10.One end of second safety chain switches 7 is connected with the first safety chain switches 6, and the other end is connected with the left side of service brake 9, and on staircase master controller 10, the second control relay 10B of service brake is connected with the right side of service brake 9.
The safety switch that the first above-mentioned safety chain switches 6 directly cuts off additional brake by a series of need on escalator and moving sidewalk is in series, as drive chain chain rupture switch, hypervelocity 1.4 times of safety switches, reversal protection switches etc.; Second safety chain switches 7 only needs the safety switches cutting off service brake to be in series by a series of on escalator and moving sidewalk, as skirt panel safety switch, step sink protection switch, emergency stop switch etc.
As seen from Figure 1, the present invention is provided with two power detecting relays, and its normally opened contact 1B, 2B and normally-closed contact 1A, 2A is connected respectively and enter in escalator safety chain switches 6,7 and electric capacity energy storage loop 11, produces the function of redundancy protecting.
Electric capacity energy storage loop 11 comprises diode 3, charging current limiter resistance 4 and charging capacitor 5.Diode 3 in electric capacity energy storage loop 11 can prevent the energy of charging capacitor 5 first relay 1 to power detecting when power-off, second relay 2 feed, when power supply just drops into, the voltage of charging capacitor 5 is very low, internal resistance is very little, can be limited the maximum current charged to charging capacitor 5 by current-limiting resistance 4.
Specific works process of the present invention is as follows: when escalator and moving sidewalk normally work, electric capacity energy storage loop 11 and additional brake 8 disconnect, if now all safety switches are all normal, the all conductings of first safety return circuit 6, second safety return circuit 7, the left side of additional brake 8 and service brake 9 obtains electric, the duty of brake can be controlled respectively by the first control relay 10A of staircase master controller 10, the second control relay 10B, and now electric capacity energy storage loop 11 does not affect any function of staircase safety return circuit and staircase main controller circuit.When escalator and moving sidewalk power supply cut off suddenly, first power detecting relay 1 of power detecting, second source detect relay 2 and all disconnect, electric capacity energy storage loop 11 is directly connected with additional brake 8 by the normally-closed contact 1A of the first power detecting relay 1 of power detecting, the normally-closed contact 2A of second source detection relay 2, for it provides short-time energy, realize the deferred action of additional brake, ensure braking distance during power supply power-off suddenly.
The normally opened contact 1B of power detecting first power detecting relay, the normally opened contact 2B series connection that second source detects relay enters in safety return circuit, additional brake safety return circuit is made to comprise the first safety chain switches 6, the normally opened contact 1B of the first power detecting relay, second source detects the normally opened contact 2B of relay 2, service brake safety return circuit comprises the first safety chain switches 6, second safety chain switches 7, the normally opened contact 1B of the first power detecting relay 1, second source detects the normally opened contact 2B of relay, additional brake 8 and service brake 9 can be controlled respectively.When power detecting relay fault (non-adhesive), on master controller 10, the first control relay 10A of additional brake may by normally-closed contact 1A, 2A short circuit of first, second power detecting relay of power detecting, the normally opened contact 1B in safety return circuit is series at by this, 2B, cut off the power supply of additional brake 8 and service brake 9, ensure the safety of escalator and moving sidewalk.
From above-mentioned operation principle, the power supply of additional brake 8 is, powered by the first safety chain switches 6 when power supply is normal, when power cut-off by the normally-closed contact 1A of power detecting two power detecting relays, 2A is provided by charging capacitor 5 and maintains electric energy in short-term, the power-off handoff procedure of an additional brake 8 is had in centre, the time of this process is two power detecting relays 1 of power detecting, the dead electricity release time of 2, ensure that this time is less than the dead electricity release time of additional brake 8, then additional brake can not be cut off in the process switched.
In the power-off stage of accumulation of energy in short-term, electric capacity energy storage loop 11 forms RC discharge loop together with additional brake 8, according to additional brake coil resistance, select suitable charging capacitor C and charging current limiter resistance R, make the time range of additional brake deferred action be between 0.5 ~ 3 second.
As shown in Figure 2, the structure chart of electric capacity energy storage loop 11 with additional brake feedback contact 12, to connect in electric capacity energy storage loop the feedback contact 12 of additional brake, when additional brake before power cut-off 8 is in release conditions, its feedback contact 12 closes, during power-off, electric capacity energy storage loop 11 and additional brake 8 are connected, and additional brake time delay can be made to disconnect; When additional brake before power cut-off 8 is in operating state, its feedback contact 12 disconnects, and during power-off, electric capacity energy storage loop 11 and additional brake 8 disconnect, and additional brake is in operating state all the time.Therefore electric capacity energy storage loop 11 can determine whether to need access delay accumulation of energy function according to the operating state of additional brake 8 before power-off.
But, when the first power detecting relay 1 not adhesive (the first power detecting relay 1 fault or its wire loop short-term) of power detecting, in staircase normal work period, first power detecting relay 1 normally-closed contact 1A possibility short circuit first safety chain switches 6, this situation is unsafe.A kind of method of improvement is, connect at normally-closed contact 1A loop place a time delay break contact 1C for the first power detecting relay 1, as shown in Figure 3, this loop in parallel with the first safety chain switches 6 is only connected, to prevent the generation of unsafe conditions within several seconds times of power cut-off.
Above by embodiment to invention has been detailed description, but these are not construed as limiting the invention.Those skilled in the art also can make some distortion and improvement without departing from the principles of the present invention, and these also should be considered as belonging to protection scope of the present invention.
Claims (9)
1. an Additional brake power failure time-delay operation device, comprise connection power supply in circuit, service brake (9), additional brake (8), the first safety chain switches (6), the second safety chain switches (7), master controller (10), described first safety chain switches (6) is for cutting off additional brake (8) and service brake (9), and described second safety chain switches (7) is for cutting off service brake (9); Described master controller (10) controls the action of service brake (9) and additional brake (8), it is characterized in that: also comprise the first power detecting relay (1) for detecting power supply and electric capacity energy storage loop (11), when power supply is normal, electric capacity energy storage loop (11) and additional brake (8) disconnect, when power cut-off, electric capacity energy storage loop (11) provides short-time energy to additional brake (8), realizes the deferred action of additional brake
;also comprise second source and detect relay (2), normally opened contact (the 1B of described first and second power detecting relays, 2B) be connected with the first safety chain switches (6) after series connection, additional brake (8) is connected into after the normally-closed contact (1A, 2A) difference series capacitance energy storage loop (11) of the first and second power detecting relays.
2. a kind of Additional brake power failure time-delay operation device according to claim 1, is characterized in that: described electric capacity energy storage loop (11) comprises the diode (3), charging current limiter resistance (4) and the charging capacitor (5) that connect successively.
3. a kind of Additional brake power failure time-delay operation device according to claim 2, is characterized in that: when described diode (3) is for preventing power cut-off, energy storage loop is to the first and second relay feeds.
4. a kind of Additional brake power failure time-delay operation device according to claim 3, is characterized in that: the capacitance of described charging capacitor (5) can maintain additional brake (8) continuous firing 0.5 to 3 second.
5. a kind of Additional brake power failure time-delay operation device according to claim 1, is characterized in that: the dead electricity of described first and second power detecting relays is less than the dead electricity release time of additional brake (8) release time respectively.
6. a kind of Additional brake power failure time-delay operation device according to claim 1, it is characterized in that: also comprise the feedback contact (12) for additional brake, make electric capacity energy storage loop (11) determine whether to need access delay accumulation of energy function according to the operating state of additional brake (8) before power-off.
7. a kind of Additional brake power failure time-delay operation device according to claim 1, it is characterized in that: also comprise the time delay break contact (1C) for the first power detecting relay, described time delay break contact (1C) and the first power detecting relay are only connected within the short time of power cut-off.
8. a kind of Additional brake power failure time-delay operation device according to claim 6, it is characterized in that: one end of described feedback contact (12) is connected with the normally-closed contact (1A) of the first power detecting relay, the other end of feedback contact (12) is connected with one end of additional brake (8).
9. a kind of Additional brake power failure time-delay operation device according to claim 7, it is characterized in that: one end of described time delay break contact (1C) is connected with the normally-closed contact (1A) of the first power detecting relay, the other end of time delay break contact (1C) is connected with one end of additional brake (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170703.4A CN103253588B (en) | 2013-05-10 | 2013-05-10 | Additional brake power failure time-delay operation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170703.4A CN103253588B (en) | 2013-05-10 | 2013-05-10 | Additional brake power failure time-delay operation device |
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| Publication Number | Publication Date |
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| CN103253588A CN103253588A (en) | 2013-08-21 |
| CN103253588B true CN103253588B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310170703.4A Active CN103253588B (en) | 2013-05-10 | 2013-05-10 | Additional brake power failure time-delay operation device |
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| CN (1) | CN103253588B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5679611B1 (en) * | 2014-02-10 | 2015-03-04 | 東芝エレベータ株式会社 | Passenger conveyor |
| CN104692226B (en) * | 2015-01-14 | 2016-09-07 | 浙江西子重工机械有限公司 | A kind of delayed shutdown system and method for escalator or moving sidewalk |
| CN109279485A (en) * | 2018-10-24 | 2019-01-29 | 苏州威倍科动力科技有限公司 | Control method for the braking of the power loss of escalator and moving sidewalk |
| CN111606166A (en) * | 2020-06-30 | 2020-09-01 | 迅达（中国）电梯有限公司 | Elevator brake control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005041657A (en) * | 2003-07-23 | 2005-02-17 | Mitsubishi Electric Corp | Control device for man conveyor |
| JP5028039B2 (en) * | 2006-07-07 | 2012-09-19 | 東芝エレベータ株式会社 | Auxiliary brake control device for passenger conveyor |
| CN202766071U (en) * | 2012-09-18 | 2013-03-06 | 苏州默纳克控制技术有限公司 | Escalator and moving walk security system |
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Effective date of registration: 20190829 Address after: 610400 Chengdu, Jintang, Chengdu ABA Industrial Development Zone, Sichuan Patentee after: Chengdu Kangli Elevator Co., Ltd. Address before: 215213 Linhu Economic Development Zone, Luxu Town, Wujiang City, Suzhou City, Jiangsu Province, No. 88 Patentee before: Canny Elevator Co., Ltd. |
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