CN203319490U - Power-failure time-delay operation device of additional brake - Google Patents
Power-failure time-delay operation device of additional brake Download PDFInfo
- Publication number
- CN203319490U CN203319490U CN2013202513084U CN201320251308U CN203319490U CN 203319490 U CN203319490 U CN 203319490U CN 2013202513084 U CN2013202513084 U CN 2013202513084U CN 201320251308 U CN201320251308 U CN 201320251308U CN 203319490 U CN203319490 U CN 203319490U
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- additional brake
- power supply
- relay
- brake
- return circuit
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Abstract
The utility model discloses a power-failure time-delay operation device of an additional brake. The device comprises a power source connected in a circuit, a working brake (9), the additional brake (8), a first safety circuit switch (6), a second safety circuit switch (7) and a main controller (10) and further comprises a first power source detection relay (1) used for detecting the power source and a capacitance energy storage circuit (11). When the power source is normal, the capacitance energy storage circuit (11) is disconnected with the additional brake (8); when the power source is in power failure, the capacitance energy storage circuit (11) provides short-time energy for the additional brake (8), and time-delay operation of the additional brake is achieved. According to the power-failure time-delay operation device of the additional brake, an escalator and a moving sidewalk can make the additional brake perform time-delay operation relative to the working brake under the condition that the power failure suddenly happens and the additional brake is not required to operate, the requirement for braking distance is met, too large impact will not be generated so that the additional brake can not operate immediately, and safety is ensured; besides, the power-failure time-delay operation device of the additional brake has the advantages of being high in charging speed and low in cost.
Description
Technical field
The utility model relates to a kind of control setup of the additional brake for escalator and Travelator system.
Background technology
When up-to-date " manufacture of escalator and moving sidewalk and installation safety standard " GB16899-2011 5.4.2.2.2 have stipulated the additional brake action, needn't guarantee the desired braking distance of service brake (seeing 5.4.2.1.3).Therefore producer is when the design additional brake, is stop escalator or moving sidewalk effectively, seldom can consider the requirement of additional brake to escalator or moving sidewalk braking distance.Yet at the 5.4.2.2.5 clause regulation: if power supply et out of order or safety return circuit dead electricity allow additional brake and service brake to move simultaneously, now the stop condition should meet the regulation of escalator or moving sidewalk braking distance.Otherwise additional brake and service brake only allow in the situation that exceed the speed limit 1.4 times or reverse synchronization action.
For security consideration, the additional brake of most of producers design is the dead electricity braking, and drg action while cutting off the power supply on the other hand, has also been stipulated additional brake in standard in the situation that 1.4 times of hypervelocities or reverse must be moved immediately, and deliberate time delay can not be arranged.Therefore actual situation is that additional brake is not considered the requirement of braking distance when design, in the staircase operational process during power supply et out of order (as power cut-off), the additional brake inevitable action, just must meet the 5.4.2.2.5 clause in standard: power supply et out of order or safety return circuit dead electricity, service brake and additional brake move simultaneously, and now the stop condition should meet the regulation of braking distance.
For solving above-mentioned contradiction, when designing, additional brake do not meet the requirement of braking distance, it only allows in the situation that exceed the speed limit 1.4 times or reverse action immediately, and does not all allow service brake and additional brake to move in other situations such as power cut-off simultaneously.
In the situation that dead electricity, service brake moves immediately so, by the technological means time delay, makes the additional brake action, makes the braking distance of escalator or moving sidewalk meet regulation.A kind of method commonly used is to power to additional brake by the UPS uninterrupted power supply (UPS), after the staircase outage, UPS powers still to additional brake in short-term, reach service brake and first move stop escalator or moving sidewalk, and the purpose of additional brake deferred action.Yet the cost of the method one side UPS is higher, on the other hand, the UPS charging needs one longer period, if long-term stoppage in transit of escalator or moving sidewalk causes the UPS battery electric weight to give out light, putting into operation and running into soon power failure for the first time, the purpose of additional brake deferred action just can not reach.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, a kind of device that makes additional brake deferred action after having a power failure cheaply is provided, and this device should meet escalator and moving sidewalk in the situation that 1.4 times of hypervelocities occur or reverse the requirement of action immediately during normal operation simultaneously.
The utility model solves the problems of the technologies described above by the following technical solutions:
A kind of additional brake power failure deferred action device, comprise the power supply, service brake, additional brake, the first safety return circuit switch, the second safety return circuit switch, the master controller that are connected in circuit, wherein master controller comprises the first control relay and the second control relay; One end of power supply is connected with the first safety return circuit switch; Described the first safety return circuit switch is connected with the second safety return circuit switch, additional brake respectively; Described the first control relay is connected with additional brake, and described the second control relay is connected with service brake; Described the first control relay is connected with the other end of power supply respectively with the second control relay, it is characterized in that: also comprise for detection of the first power supply detection relay of power supply with for the electric capacity energy storage loop of short-time energy is provided; Described the first power supply detects relay and is connected with the first safety return circuit switch with the open contact that the first power supply after the series connection of electric capacity energy storage loop detects relay, and the normally closed contact that the first power supply detects relay is connected with additional brake.
As a kind of optimal technical scheme of the present utility model: also comprise that the second source of connecting with the electric capacity energy storage loop detects relay; After the open contact series connection of described the first and second power supplys detection relays, with the first safety return circuit switch, be connected, the normally closed contact that second source detects relay is connected with additional brake.
As a kind of optimal technical scheme of the present utility model: described electric capacity energy storage loop comprises diode, charging current limiter resistance and the charging capacitor connected successively.
As a kind of optimal technical scheme of the present utility model: an end of described feedback contact is connected with the normally closed contact that the first power supply detects relay, and the other end of feedback contact is connected with an end of additional brake.
As a kind of optimal technical scheme of the present utility model: an end of described time delay break contact is connected with the normally closed contact that the first power supply detects relay, and the other end of time delay break contact is connected with an end of additional brake.
When the diode in the present invention is used for preventing power cut-off, energy storage loop is to the first and second relay feeds; The capacitance of charging capacitor can maintain the additional brake continuous firing 0.5 to 3 second.The dead electricity of the first and second power supplys detection relays is less than the dead electricity drop away time of additional brake drop away time.Also comprise the feedback contact for additional brake, the operating state before outage determines whether to need access delay accumulation of energy function according to additional brake to make the electric capacity energy storage loop, also comprise the time delay break contact that detects relay for the first power supply, time delay break contact and the first power supply detect relay and only connect within the short time of power cut-off.
The utility model makes escalator and the moving sidewalk can be in the situation that suddenly have a power failure to wait and do not require that additional brake moves, make additional brake with respect 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 of escalator or moving sidewalk normal operation, once the situation that the discovery system has 1.4 times of hypervelocities or reverses can make additional brake move immediately, thereby not reduce the performance of additional brake, guarantee safety simultaneously.Device of the present utility model is compared with other technology, there are charging rate characteristics fast, with low cost, only increase by two power supplys and detect relay and electric capacity energy storage loop, can realize the power cut off delay break function of additional brake, the performance while not affecting again the additional brake normal operation simultaneously.
The accompanying drawing explanation
Fig. 1 is the constructional drawing of a kind of additional brake power failure deferred action device of the present utility model.
Fig. 2 is the constructional drawing of increase additional brake feedback contact of the present utility model.
Fig. 3 is the constructional drawing that the time delay break contact of series connection the first relay of the present utility model enters the electric capacity energy storage loop.
Wherein label is explained: 1-the first power supply detects relay, the normally closed contact that 1A-the first power supply detects, the open contact that 1B-the first power supply detects, 1C-time delay break contact, the 2-second source detects relay, the 2A-second source detects the normally closed contact of relay, the 2B-second source detects the open contact of relay, the 3-diode, 4-charging current limiter resistance, the 5-charging capacitor, 6-the first safety return circuit switch, 7-the second safety return circuit switch, the 8-additional brake, the 9-service brake, the 10-master controller, 10A-the first control relay, 10B-the second control relay, 11-electric capacity energy storage loop, the 12-feedback contact.
The specific embodiment
The utility model has designed a kind of additional brake power failure deferred action device, comprise the power supply, service brake 9, additional brake 8, the first safety return circuit switch 6, the second safety return circuit switch 7, the master controller 10 that are connected in circuit, wherein master controller 10 comprises the first control relay 10A and the second control relay 10B; Described the first safety return circuit switch 6 is for cutting off additional brake 8 and service brake 9, the second safety return circuit switch 7 is for cutting off service brake 9, master controller 10 is controlled the action of service brake 9 and additional brake 8, also comprise that the first power supply for detection of power supply detects relay and electric capacity energy storage loop 11, when power supply is normal, electric capacity energy storage loop 11 disconnects with additional brake, 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 the utility model deferred action device, comprise the power supply, service brake 9, additional brake 8, the first safety return circuit switch 6, the second safety return circuit switch 7, the master controller 10 that are connected in circuit, 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 return circuit switch 6; Described the first safety return circuit switch 6 is connected with the second safety return circuit switch 7, additional brake 8 respectively; Described the first control relay 10A is connected with additional brake 8, and described the second control relay 10B is connected with service brake 9; Described the first control relay 10A is connected with the other end of power supply respectively with the second control relay 10B, also comprises for detection of the first power supply detection relay 1 of power supply with for the electric capacity energy storage loop 11 of short-time energy is provided; Described the first power supply detects relay 1 and is connected with the first safety return circuit switch 6 with the open contact 1B that the first power supply after 11 series connection of electric capacity energy storage loop detects relay 1, and the normally closed contact 1A that the first power supply detects relay 1 is connected with additional brake 8.
When being connected into second source detection relay 2, open contact 1B, the 2B series connection that the first and second power supplys detect relays is connected into additional brake 8 after entering normally closed contact 1A that the first safety return circuit switch 6, the first and second power supplys detect relays, 2A series capacity energy storage loop 11.The open contact 1B of the first power supply detection relay 1 detects the open contact 2B of relay 2 with second source, an end of the first safety return circuit switch 6 is connected successively; When supply disconnecton and the first power supply detect relay 1, second source and detect relay 2 and all disconnect, normally closed contact 1A, open contact 1B that described electric capacity energy storage loop 11 detects relay 1 by the first power supply are connected with additional brake 8 deferred action that realizes additional brake.
Open contact 1B, the 2B series connection that makes the first power supply detected for power supply detect relay 1, second source detection relay 2 enters the left side of the first safety return circuit switch 6 access additional brakes 8; The normally closed contact 1A that the first power supply detects relay 1 and the left side of also accessing additional brake 8 after the first safety return circuit switch 6 is in parallel, the normally closed contact 2A of second source detection relay 2 and the first control relay 10A other end that accesses afterwards additional brake 8 in parallel of additional brake 8 on staircase master controller 10.One end of the second safety return circuit switch 7 is connected with the first safety return circuit switch 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 return circuit switch 6 directly cuts off additional brake by a series of need on escalator and moving sidewalk is in series, as driving chain chain rupture switch, 1.4 times of safety switchs, reversal protection switch etc. exceed the speed limit; The second safety return circuit switch 7 is in series by a series of safety switchs that cut off service brake that only need on escalator and moving sidewalk, as skirt panel safety switch, the sagging protection switch of step, emergency stop switch etc.
As seen from Figure 1, the utility model is provided with two power supplys and detects relay, and by its open contact 1B, 2B and normally closed contact 1A, 2A connects respectively and enters in escalator safety return circuit switch 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 first relay 1 that the energy of charging capacitor 5 detects to power supply when outage, the second relay 2 feeds, when power supply just drops into, the voltage of charging capacitor 5 is very low, internal resistance is very little, by current-limiting resistance 4, can limit to the maximum current of charging capacitor 5 chargings.
Specific works process of the present utility model is as follows: when escalator and moving sidewalk normal operation, electric capacity energy storage loop 11 disconnects with additional brake 8, if now all safety switchs are all normal, the first safety return circuit 6, the equal conducting of the second safety return circuit 7, the left side of additional brake 8 and service brake 9 obtains electric, the mode of operation of drg can be controlled respectively by the first control relay 10A, the second control relay 10B of staircase master controller 10, 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, the first power supply that power supply detects detects relay 1, second source detects relay 2 and all disconnects, the first power supply that electric capacity energy storage loop 11 detects by power supply detects the normally closed contact 1A of relay 1, the normally closed contact 2A that second source detects relay 2 and directly is connected with additional brake 8, for it provides short-time energy, realize the deferred action of additional brake, guarantee braking distance when power supply cuts off the power supply suddenly.
Power supply detects the open contact 1B that the first power supply detects relay, the open contact 2B series connection that second source detects relay enters in safety return circuit, make the additional brake safety return circuit comprise the first safety return circuit switch 6, the first power supply detects the open contact 1B of relay, second source detects the open contact 2B of relay 2, the service brake safety return circuit comprises the first safety return circuit switch 6, the second safety return circuit switch 7, the first power supply detects the open contact 1B of relay 1, second source detects the open contact 2B of relay, can control respectively additional brake 8 and service brake 9.When power supply detects the relay fault (not adhesive), on master controller 10, the first control relay 10A of additional brake may be detected normally closed contact 1A, the 2A short circuit that first, second power supply detects relay by power supply, be series at the open contact 1B in safety return circuit by this, 2B, cut off the power supply of additional brake 8 and service brake 9, guarantee the safety of escalator and moving sidewalk.
From above-mentioned principle of work, the power supply of additional brake 8 is, when power supply is normal, by the first safety return circuit switch 6, power, detect by power supply the normally closed contact 1A that two power supplys detect relay when power cut-off, 2A is provided and is maintained in short-term electric energy by charging capacitor 5, the outage handoff procedure that one additional brake 8 is arranged in centre, the time of this process is that two power supplys that power supply detects detect relay 1,2 dead electricity drop away time, guarantee that this time is less than the dead electricity drop away time of additional brake 8, additional brake can not be cut off in the process of switching.
Cut off the power supply the stage of accumulation of energy in short-term, electric capacity energy storage loop 11 forms the RC discharge loop together with additional brake 8, according to the additional brake coil resistance, select suitable charging capacitor C and charging current limiter resistance R, the time range that makes additional brake deferred action is between 0.5 ~ 3 second.
As shown in Figure 2, the constructional drawing of electric capacity energy storage loop 11 with additional brake feedback contact 12, the feedback contact 12 of series connection additional brake in the electric capacity energy storage loop, before power cut-off, additional brake 8 is in release position, its feedback contact 12 closures, during outage, electric capacity energy storage loop 11 is connected with additional brake 8, can make the additional brake time delay disconnect; Before power cut-off, additional brake 8 is in operating state, and its feedback contact 12 disconnects, and during outage, electric capacity energy storage loop 11 disconnects with additional brake 8, and additional brake is all the time in operating state.Therefore electric capacity energy storage loop 11 can determine whether to need access delay accumulation of energy function by the operating state before outage according to additional brake 8.
But, the first power supply detected when power supply detects relay 1 not adhesive (the first power supply detects relay 1 fault or its wire loop short-term), in the staircase normal work period, the first power supply detects relay 1 normally closed contact 1A possibility short circuit the first safety return circuit switch 6, and this situation is unsafe.A kind of improved method is, at time delay break contact 1C who detects relay 1 for the first power supply of place, normally closed contact 1A loop series connection, as shown in Figure 3, make this loop in parallel with the first safety return circuit switch 6 only connect within several seconds times of power cut-off, to prevent the generation of unsafe condition.
Abovely by embodiment, the utility model is had been described in detail, but these not form restriction of the present utility model.Also can make some distortion and improvement in the situation that do not break away from the utility model principle those skilled in the art, these also should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. an additional brake power failure deferred action device, comprise the power supply, service brake (9), additional brake (8), the first safety return circuit switch (6), the second safety return circuit switch (7), the master controller (10) that are connected in circuit, 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 return circuit switch (6); Described the first safety return circuit switch (6) is connected with the second safety return circuit switch (7), additional brake (8) respectively; Described the first control relay (10A) is connected with additional brake (8), and described the second control relay (10B) is connected with service brake (9); Described the first control relay (10A) is connected with the other end of power supply respectively with the second control relay (10B), it is characterized in that: also comprise for detection of the first power supply detection relay (1) of power supply with for the electric capacity energy storage loop (11) of short-time energy is provided; Described the first power supply detects relay (1) and is connected with the first safety return circuit switch (6) with the open contact (1B) that the first power supply after electric capacity energy storage loop (11) series connection detects relay (1), and the normally closed contact (1A) that the first power supply detects relay (1) is connected with additional brake (8).
2. a kind of additional brake power failure deferred action device according to claim 1, is characterized in that: also comprise that the second source of connecting with electric capacity energy storage loop (11) detects relay (2); After open contact (1B, the 2B) series connection of described the first and second power supplys detection relays, with the first safety return circuit switch (6), be connected, the normally closed contact (2A) that second source detects relay is connected with additional brake (8).
3. a kind of additional brake power failure deferred action device according to claim 1 and 2 is characterized in that: described electric capacity energy storage loop (11) comprises diode (3), charging current limiter resistance (4) and the charging capacitor (5) connected successively.
4. a kind of additional brake power failure deferred action device according to claim 1 and 2, it is characterized in that: also comprise feedback contact (12), one end of described feedback contact (12) is connected with the normally closed contact (1A) that the first power supply detects relay, and the other end of feedback contact (12) is connected with an end of additional brake (8).
5. a kind of additional brake power failure deferred action device according to claim 1 and 2, it is characterized in that: also comprise time delay break contact (1C), one end of described time delay break contact (1C) is connected with the normally closed contact (1A) that the first power supply detects relay, and the other end of time delay break contact (1C) is connected with an end of additional brake (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202513084U CN203319490U (en) | 2013-05-10 | 2013-05-10 | Power-failure time-delay operation device of additional brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202513084U CN203319490U (en) | 2013-05-10 | 2013-05-10 | Power-failure time-delay operation device of additional brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203319490U true CN203319490U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202513084U Expired - Lifetime CN203319490U (en) | 2013-05-10 | 2013-05-10 | Power-failure time-delay operation device of additional brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203319490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836585A (en) * | 2016-05-17 | 2016-08-10 | 上海新时达电气股份有限公司 | Accidental car movement protection circuit and method |
| CN107215740A (en) * | 2017-07-24 | 2017-09-29 | 苏州通润驱动设备股份有限公司 | The control circuit and its method of a kind of safety protection apparatus for elevator |
-
2013
- 2013-05-10 CN CN2013202513084U patent/CN203319490U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836585A (en) * | 2016-05-17 | 2016-08-10 | 上海新时达电气股份有限公司 | Accidental car movement protection circuit and method |
| CN107215740A (en) * | 2017-07-24 | 2017-09-29 | 苏州通润驱动设备股份有限公司 | The control circuit and its method of a kind of safety protection apparatus for elevator |
| CN107215740B (en) * | 2017-07-24 | 2023-12-08 | 苏州通润驱动设备股份有限公司 | Control circuit and method for elevator safety protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
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| CX01 | Expiry of patent term |