CN205257697U - Elevator safety loop fault location system based on electric charge detects - Google Patents
Elevator safety loop fault location system based on electric charge detects Download PDFInfo
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- CN205257697U CN205257697U CN201521065404.5U CN201521065404U CN205257697U CN 205257697 U CN205257697 U CN 205257697U CN 201521065404 U CN201521065404 U CN 201521065404U CN 205257697 U CN205257697 U CN 205257697U
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Abstract
The utility model provides an elevator safety loop fault location system based on electric charge detects, elevator safety loop includes the safety switch group that comprises the safety switch of a plurality of series connections, fault location system includes electric charge detection circuitry, change over switch, discharge cell and a plurality of electric capacity, wherein: electric charge detection circuitry includes high level terminal and low level terminal, and formation detection loop is connected with safety switch group to discharge cell, change over switch between high level terminal and low level terminal, safety switch group switches between safety loop and detection loop through change over switch, electric charge detection circuitry carries out the secondary charging to electric capacity after the safety switch montage is gone into detection loop and is accomplished for capacitor discharge through the discharge cell to charge the electric charge through the detection and confirm the safety switch's of trouble position. Through the utility model discloses, it gets into positions such as well, the hole end, sedan -chair top and investigates and to fix a position labour saving and time saving to the fault point to need not the maintainer.
Description
Technical field
The utility model relates to elevator safety field, more particularly, relates to a kind of electricity based on charge detectionLadder safety return circuit fault location system.
Background technology
Elevator is the large special equipment that integrates machinery, electrical equipment, and its structure is comparatively special. Because it belongs toIn manned vertical transportation means of transport, safe operation must be put in the first place. Transport for ensureing elevator safetyOK, many safety components (being safety switch) are housed respectively, example at each position of elevator Operation and controlAs peaces such as limiter of speed, safety tongs, emergency stop push button, emergency exit switch, pit switch, limit switchesTotal event. And the contact of above-mentioned safety component and relay in series elevator safety loop. Above-mentioned elevatorIn safety return circuit, on the one hand because the safety switch quantity of series connection is more, each peace spatially on the other handThe distribution of full switch comparatively disperses, for example, be distributed in respectively machine room, hoistway, sedan-chair top etc., once safety switchBreak down, need to spend a large amount of man power and materials and investigate.
As shown in Figure 1, be existingly to carry out elevator safety switch fault location by safety switch short-circuit methodSchematic diagram. This scheme utilizes the thought of the dichotomy of mathematics to carry out short circuit to safety switch, and in each safetyThe scope of constantly dwindling trouble point in the short circuit process of switch, first short circuit A1,2 of An detect,If have fault respectively short circuit A1,2 of Am and Am+1,2 of An detect, until find faultPoint. Safety switch short circuit method has that cost is little, simple to operate, positioning precision advantages of higher, uses at present ratioMore extensive. But this scheme also exists, detecting step is loaded down with trivial details is subject to the position of trouble point different and not with short circuit number of timesWith, and if short-circuited terminal does not remove in time, will relate to the normal operation of elevator device, even shadowRing personal safety.
As shown in Figure 2, be the existing schematic diagram that carries out elevator safety switch fault location by shunt-wound capacitance.This scheme increases shunt-wound capacitance C at each safety switch, due to the position difference of fault generation, thereby makes electricityLadder safety return circuit presents different capacitances, is detected different capacitances and confirmed the peace of fault by oscillating circuitThe position of full switch. But in the method, due to the existence of the parasitic parameter of cable, by the inspection to resonance circuitSurvey precision exerts an influence.
As shown in Figure 3, be existing by and connect LED lamp and carry out the signal of elevator safety switch fault locationFigure. In the time that fault occurs, the state that presents different on and off according to LED lamp comes the position that failure judgement is locatedPut. But this scheme needs maintainer to enter the positions such as hoistway, the end, hole, sedan-chair top to be investigated, and wastes time and energy.
Utility model content
The technical problems to be solved in the utility model is, loaded down with trivial details for above-mentioned elevator safety loop fault locationProblem, a kind of new elevator safety loop fault location system is provided.
The technical scheme that the utility model solves the problems of the technologies described above is that a kind of electricity based on charge detection is providedLadder safety return circuit fault location system, described elevator safety loop comprises the safety switch being connected in series by multipleThe safety switch group forming, described fault location system comprises charge detection circuit, change-over switch, electric discharge listFirst and multiple electric capacity, wherein: described charge detection circuit comprises high level terminal and low level terminal, and instituteState discharge cell, change-over switch and safety switch group is connected to form between high level terminal and low level terminalDetect loop; Described in each, one end of electric capacity is connected respectively to front end, the other end connection of a safety switchThe low level terminal of charge detection circuit; Described safety switch group by change-over switch in safety return circuit and detectionBetween loop, switch; Described charge detection circuit detects loop and passes through discharge cell in the access of safety switch groupFor capacitor discharge carries out recharging to electric capacity after completing, and determine the safety of fault by detecting charging chargeThe position of switch.
In the elevator safety loop fault location system based on charge detection described in the utility model, described inDischarge cell comprises by-pass switch; Described by-pass switch in the time being capacitor discharge by charge detection circuit from detectIn loop, bypass is opened, and after capacitor discharge completes, charge detection circuit is connected with safety switch group.
In the elevator safety loop fault location system based on charge detection described in the utility model, described inDischarge cell also comprises current-limiting resistance.
In the elevator safety loop fault location system based on charge detection described in the utility model, described inChange-over switch adopts single-pole double throw relay.
In the elevator safety loop fault location system based on charge detection described in the utility model, described inSafety switch be computer room safety switch, landing door safety switch, limiter of speed, safety tongs, emergency stop push button,Emergency exit switch, pit switch or limit switch.
In the elevator safety loop fault location system based on charge detection described in the utility model, described inThe capacitance of multiple electric capacity is identical.
Elevator safety loop fault location system of the present utility model has following beneficial effect: by multiple pointsBe not connected to each safety switch electric capacity, and complete automatic on-line by charge detection voltage detecting charging chargeDetect. By the utility model, enter the positions such as hoistway, the end, hole, sedan-chair top without maintainer and investigateCan position trouble point, not only time saving and energy saving, but also can not affect the functional safety of elevator device.
Brief description of the drawings
Fig. 1 is the schematic diagram that existing safety switch short-circuit method carries out elevator safety switch fault location.
Fig. 2 is the existing schematic diagram that carries out elevator safety switch fault location by shunt-wound capacitance.
Fig. 3 be existing by and connect LED lamp and carry out the schematic diagram of elevator safety switch fault location.
Fig. 4 is the elevator safety loop fault location system embodiment of the utility model based on charge detectionSchematic diagram.
Fig. 5 is that in Fig. 4, the elevator safety loop fault location system based on charge detection carries out fault locationSchematic diagram.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawingAnd embodiment, the utility model is further elaborated. Should be appreciated that described herein concreteEmbodiment is only in order to explain the utility model, and is not used in restriction the utility model.
As shown in Figure 4, be that the elevator safety loop fault location system of the utility model based on charge detection is realExecute routine schematic diagram, above-mentioned elevator safety loop comprises the safety being made up of multiple safety switches that are connected in seriesSwitches set 44. Particularly, above-mentioned safety switch can be computer room safety switch, landing door safety switch, speed limitDevice, safety tongs, emergency stop push button, emergency exit switch, pit switch or limit switch. The present embodimentIn fault location system comprise charge detection circuit 41, change-over switch 42, discharge cell 43 and multiple electric capacityC. For ease of calculating, the capacitance of the plurality of capacitor C can be identical.
Above-mentioned charge detection circuit 41 comprises high level terminal and low level terminal, and discharge cell 43, switchSwitch 42 and safety switch group 44 are connected to form and detect loop between high level terminal and low level terminal; OftenFront end, the other end that one end of one capacitor C is connected respectively to a safety switch connect charge detection circuit 41Low level terminal.
Change-over switch 42 specifically can adopt single-pole double throw relay k1, by changing single-pole double throw relay k1State, safety switch group 44 can be connected to elevator safety loop power supply and (now arrive single-pole double throw relayK1 is connected to c contact), or the access of safety switch group is detected to loop and (now arrive single-pole double throw relayK1 is connected to d contact). Charge detection circuit 41 detects loop and passes through electric discharge in 44 accesses of safety switch groupUnit 43 has discharged and rear capacitor C has been carried out to recharging for capacitor C, and determines by detecting charging chargeThe position of the safety switch of fault.
Discharge cell 43 comprises by-pass switch k2 (specifically can adopt relay) and current-limiting resistance Rs, this bypassSwitch k1 leaves (by-pass switch by charge detection circuit 41 bypass from detect loop in the time discharging for capacitor CK2 is switched to contact b), and after capacitor C has been discharged by charge detection circuit 41 and safety switch group 44Connect (being that by-pass switch k2 is switched to contact a)).
The elevator safety loop fault location system of stating in the use based on charge detection carries out safety return circuit eventWhen location barrier, first by change-over switch 42 by safety switch group by safety return circuit power switching to detection loop(being that the c contact change-over of single-pole double throw relay k1 from figure is to d contact); And by discharge cell 43 toSafety switch the capacitor C connecing discharge (being that by-pass switch k2 is switched to the b contact in figure). Capacitor CAfter electric discharge finishes, the b contact change-over of by-pass switch k2 from figure is to a contact, by charge detection circuit 41Output voltage U multiple capacitor C are carried out to recharging, (wherein C is charge Q=nCU=∫ idt of chargingThe capacitance of single electric capacity, U is the output voltage values of charge detection circuit 41, is known quantity), finally logicalCross the position that charge value derivation obtains breakdown switch.
As shown in Figure 5, even if there is parasitic parameter in cable, QAlways＝n·C·U+m·Cs·U＝Q+Qs=∫ idt, rootThe capacitance C of the electric capacity of finding according to said system, output voltage values U and the charge detection of charge detection circuit 41Circuit parameter, can solve the impact of cable parasitic parameter on fault location precision.
The above, be only preferably detailed description of the invention of the utility model, but protection model of the present utility modelEnclose and be not limited to this, any be familiar with those skilled in the art the utility model disclose technology modelIn enclosing, the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model. CauseThis, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (6)
1. the elevator safety loop fault location system based on charge detection, described elevator safety loopComprise the safety switch group being formed by multiple safety switches that are connected in series, it is characterized in that: described fault is fixedPosition system comprises charge detection circuit, change-over switch, discharge cell and multiple electric capacity, wherein: described electric chargeTesting circuit comprises high level terminal and low level terminal, and described discharge cell, change-over switch and safety openPass group is connected to form and detects loop between high level terminal and low level terminal; One end of electric capacity described in eachBe connected respectively to the front end of a safety switch, the low level terminal that the other end connects charge detection circuit; InstituteStating safety switch group switches between safety return circuit and detection loop by change-over switch; Described charge detection electricityRoad is detected loop and is after capacitor discharge completes, electric capacity to be carried out by discharge cell in safety switch group accessRecharging, and determine the position of the safety switch of fault by detecting charging charge.
2. the elevator safety loop fault location system based on charge detection according to claim 1, itsBe characterised in that: described discharge cell comprises by-pass switch; Described by-pass switch in the time being capacitor discharge by electric chargeTesting circuit is opened from detecting bypass loop, and after capacitor discharge completes by charge detection circuit and safety openPass group connects.
3. the elevator safety loop fault location system based on charge detection according to claim 1, itsBe characterised in that: described discharge cell also comprises current-limiting resistance.
4. the elevator safety loop fault location system based on charge detection according to claim 1, itsBe characterised in that: described change-over switch adopts single-pole double throw relay.
5. the elevator safety loop fault location system based on charge detection according to claim 1, itsBe characterised in that: described safety switch be computer room safety switch, landing door safety switch, limiter of speed, safety tongs,Emergency stop push button, emergency exit switch, pit switch or limit switch.
6. the elevator safety loop fault location system based on charge detection according to claim 1, itsBe characterised in that: the capacitance of described multiple electric capacity is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065404.5U CN205257697U (en) | 2015-12-18 | 2015-12-18 | Elevator safety loop fault location system based on electric charge detects |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521065404.5U CN205257697U (en) | 2015-12-18 | 2015-12-18 | Elevator safety loop fault location system based on electric charge detects |
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| CN205257697U true CN205257697U (en) | 2016-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203788A (en) * | 2019-07-02 | 2019-09-06 | 戈尔电梯（天津）有限公司 | A kind of hall door locks breaking locating and detecting device and detection method |
| CN109052088B (en) * | 2018-07-27 | 2023-10-24 | 天津市奥瑞克电梯有限公司 | Elevator door lock bypass device and control loop thereof |
-
2015
- 2015-12-18 CN CN201521065404.5U patent/CN205257697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052088B (en) * | 2018-07-27 | 2023-10-24 | 天津市奥瑞克电梯有限公司 | Elevator door lock bypass device and control loop thereof |
| CN110203788A (en) * | 2019-07-02 | 2019-09-06 | 戈尔电梯（天津）有限公司 | A kind of hall door locks breaking locating and detecting device and detection method |
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