CN201258211Y - Elevator door switch detecting contact short circuit guard device - Google Patents
Elevator door switch detecting contact short circuit guard device Download PDFInfo
- Publication number
- CN201258211Y CN201258211Y CNU2008200606524U CN200820060652U CN201258211Y CN 201258211 Y CN201258211 Y CN 201258211Y CN U2008200606524 U CNU2008200606524 U CN U2008200606524U CN 200820060652 U CN200820060652 U CN 200820060652U CN 201258211 Y CN201258211 Y CN 201258211Y
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- door switch
- contact
- elevator
- door
- elevator door
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Abstract
The utility model discloses a protecting device of an elevator door switch for detecting the short circuit of contacts. The protecting device comprises an elevator door switch; the door switch is mounted on an elevator door, each elevator door corresponds to a door switch; the door switch is connected to a power supply; the protecting device further comprises two signal buses and a door switch state detecting and controller device; when a short-circuit occurs in the loop of the elevator door switch, the door switch state detecting and controller device allows the elevator to enter an emergency running state, such as manual operation or sudden stop and the like; and when the disconnection failure occurs in the door switch detecting device, the door switch state detecting and controller device allows the elevator to enter the sudden stop and non-restart state. The utility model can effectively recognize any short-circuit state in the loop of the elevator door switch, and allow the elevator to enter the emergency state, such as manual operation or sudden stop, at the same time, thereby safeguarding elevator passengers and maintenance personnel.
Description
Technical field
The utility model relates to a kind of elevator protection device, is specifically related to a kind of opening or closing of elevator door lock and detects contact short circuit protective device.
Background technology
Modem elevator system provides numerous fender guards, guarantees the safe operation of elevator.But elevator is the equipment that a kind of needs often overhaul the electromechanical of maintenance, when the maintainer carries out checking maintenance to it, often need some fender guards be lost efficacy temporarily with means such as short circuits, and most typical is exactly the door switch loop.
Under normal conditions, the conventional way of checking elevator door closed condition is to have been contacted in Room door and gate loop to be used as a signal and to deliver to controller and detect, one of necessary condition that can start as elevator.But in real work, sometimes must interim short circuit door loop.After checking maintenance work is finished, exist and forget because of carelessness short circuit is removed, thereby cause door switch to detect the potential safety hazard that lost efficacy in the loop.If elevator starts operation under door opening state, casualty accident very easily takes place to shear.So it is very necessary with protection that extra detection protection, particularly short circuit status detection are carried out in the door switch loop.
By the state of short circuit, existing solution has design not need the system of bypass for above-mentioned door switch; Sign and prompting are set to avoid forgetting the dismounting shorting stub; Utilize special switching device bypass etc. to be set to door switch.These methods can not be got rid of maintainer's maloperation fully, more protection passenger's safety under the situation that can not itself stick together in the door switch contact.
The utility model content
The technical problems to be solved in the utility model provides a kind of opening or closing of elevator door lock and detects contact short circuit protective device; it can effectively be discerned the opening or closing of elevator door lock loop and have short circuit state arbitrarily; elevator is entered manually or the anxious emergency state such as stop, protection elevator passenger and maintainer's safety.
For solving the problems of the technologies described above, the technical solution that the utility model opening or closing of elevator door lock detects contact short circuit protective device is:
Comprise opening or closing of elevator door lock, described door switch is installed on the elevator door, the corresponding door switch of each elevator door; Door switch and power connection; Wherein also comprise two paths of signals bus, door switch state-detection and controller;
Described each door switch comprises two output contacts, and one is open contact, and another is a normally closed contact; When elevator door cut out, open contact was connected; When elevator door was opened, normally closed contact was connected;
One road signal bus is connected the open contact of each door switch successively; Another road signal bus is in parallel successively with the normally closed contact of each door switch;
The two paths of signals bus interface is gone into door switch state-detection and controller;
When the short circuit state appears in the opening or closing of elevator door lock loop, door switch state-detection and controller enter manually elevator or suddenly urgent running state such as stop; When disconnection fault appears in the door switch detecting device, door switch state-detection and controller make elevator enter anxious stop and can not restart mode.
The technique effect that the utility model can reach is: can effectively discern the opening or closing of elevator door lock loop and have short circuit state arbitrarily, elevator be entered manually automatically or the anxious emergency state such as stop, protection elevator passenger and maintainer's safety.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation that the utility model opening or closing of elevator door lock detects contact short circuit protective device;
Fig. 2 is the system wiring figure of the utility model first embodiment;
Fig. 3 is the system wiring figure of the utility model second embodiment;
Fig. 4 is door switch state-detection and controller decision logic and protection diagram of circuit.
Among the figure, 1 opening or closing of elevator door lock, 2 signal bus, 3 door switch state-detection and controllers, 4 elevator doors, 10 power supplys.
The specific embodiment
As shown in Figure 1, the utility model opening or closing of elevator door lock detects contact short circuit protective device, comprises opening or closing of elevator door lock 1, two paths of signals bus 2, door switch state-detection and controller 3; Door switch 1 is installed on the elevator door 4 (gate or Room door), the corresponding door switch of each elevator door; Door switch 1 is connected with power supply 10.
As shown in Figure 2, door switch 1 comprises input contact a, output contact b, output contact c; Output contact b is an open contact; Output contact c is a normally closed contact.
Signal bus 2 is divided into two-way, is used to compile the state that the detecting gate lock-switch detects the contact.One road signal bus I is together in series the output contact b of door switch 1 and the input contact a of next door switch 1 successively; Another road signal bus II all is together in parallel output contact c.
When elevator door cut out, input contact a and output contact b connected; When elevator door was opened, input contact a and output contact c connected.
Signal bus I and signal bus II insert door switch state-detection and controller 3.Door switch state-detection and controller 3 are used to judge whether the door switch of elevator is in the short circuit state, if when opening or closing of elevator door lock is in the short circuit state, door switch state-detection and controller 3 make elevator forced entering manually or the anxious emergency state such as stop.But door switch state-detection and controller 3 be the mode of operation of check implement itself also, if when detecting door switch and detecting contact short circuit protective device and have disconnection fault, forcing elevator to enter can not restart mode.
Door switch state-detection and controller 3 can adopt microprocessor.
Another embodiment of the present utility model as shown in Figure 3, door switch 1 comprises the first input contact a, second input contact a ', output contact b, the output contact c; Output contact b is an open contact; Output contact c is a normally closed contact.
Two paths of signals bus 2, one road signal bus I is together in series the output contact b of door switch 1 and the output contact b of next door switch 1 successively.Another road signal bus II all is together in parallel output contact c.
This protective device also is provided with and detects loop independent current source bus, and the second input contact a ' is parallel-connected to and detects loop independent current source bus.Detecting loop independent current source bus can be under the situation that opening circuit appears in signal bus I, to the bonded assembly normally closed contact power supply of signal bus II institute.
When elevator door cut out, the output contact b and the first input contact a connected, and the output contact c and the second input contact a ' disconnect; Be that open contact is connected, normally closed contact disconnects;
When elevator door was opened, the output contact b and the first input contact a disconnected, and the output contact c and the second input contact a ' connect; Be that open contact disconnects, normally closed contact is connected.
Protection logic of the present utility model as shown in Figure 4, signal bus I contacts the output contact b (open contact) of each door switch 1 to get up successively.Under normal circumstances, when elevator door 4 Close Alls, can detect voltage on the signal bus I; As long as there is Yishanmen to open, will there be voltage on the signal bus I, controller 3 is judged the on off state of elevator door 4 according to this.
Signal bus II is together in parallel the output contact c (normally closed contact) of each door switch 1.Under normal circumstances, when elevator door 4 Close Alls, there is not voltage on the signal bus II; As long as there is Yishanmen to open, on the signal bus II voltage will be arranged, controller 3 also can be judged the on off state of elevator door according to this.
When having the short circuit phenomenon on the signal bus I, be that signal bus I also will detect voltage when opening the door, but detect voltage on the signal bus II this moment, and the switch door state that the two paths of signals bus is represented is inconsistent, can determine that there is the short circuit state in the door lock of elevator loop.
When having the short circuit phenomenon on the signal bus II, signal bus II will can detect voltage all the time, the expression door opening state, and elevator can not start under the known state that opens the door, so short circuit is meaningless.
When there was off state in opening or closing of elevator door lock detection loop, signal bus I and signal bus II detected less than voltage, but signal bus I represents door opening state at this moment, and elevator can not start under known door opening state yet.
Door switch state-detection and controller 3 detect the state of above-mentioned signal bus I and signal bus II, if the door opening and closing state unanimity of the two expression then allows elevator operate under the normal mode of operation.If signal bus I represents to close the door, and signal bus II represents to open the door, and the short circuit state appears in decision gate lock-switch loop, can allow elevator enter manually or suddenly urgent running state such as stops.Synchronous signal bus II represents the state of closing the door if signal bus I represents door opening state, and disconnection fault appears in door switch state-detection and controller 3 decision gate lock-switch detecting devices, then can make elevator enter anxious stop and can not restart mode.
If a short circuit on the signal bus I strides across many fan elevator doors, and when situation that signal bus I opens circuit takes place again in the short circuit scope, when the door behind the trip point was opened, the normally closed contact behind the last trip point of signal bus II can't correctly be shown the switch situation of the elevator door behind the trip point owing to can not power.
Second embodiment has solved this problem well, and when the door behind the trip point was opened, detection loop independent current source bus can be powered to the normally closed contact behind the trip point, thereby correctly shows the switch situation of the elevator door behind the trip point.
Claims (5)
1, a kind of opening or closing of elevator door lock detects contact short circuit protective device, comprises opening or closing of elevator door lock, and described door switch is installed on the elevator door, the corresponding door switch of each elevator door; Door switch and power connection; It is characterized in that: also comprise two paths of signals bus, door switch state-detection and controller;
Described each door switch comprises two output contacts, and one is open contact, and another is a normally closed contact; When elevator door cut out, open contact was connected; When elevator door was opened, normally closed contact was connected;
One road signal bus is connected the open contact of each door switch successively; Another road signal bus is in parallel successively with the normally closed contact of each door switch;
The two paths of signals bus interface is gone into door switch state-detection and controller.
2, opening or closing of elevator door lock according to claim 1 detects contact short circuit protective device, it is characterized in that: described door switch also comprises an input contact; The open contact of door switch is connected with the input contact of next door switch by signal bus;
When elevator door cut out, input contact and open contact were connected;
When elevator door was opened, input contact and normally closed contact were connected.
3, opening or closing of elevator door lock according to claim 1 detects contact short circuit protective device, it is characterized in that: described door switch also comprises two input contacts;
When elevator door cuts out, the open contact and the first input contacting; The normally closed contact and the second input contact open;
When elevator door is opened, the normally closed contact and the second input contacting; The open contact and the first input contact open.
4, opening or closing of elevator door lock according to claim 3 detects contact short circuit protective device, it is characterized in that: described protective device also is provided with and detects loop independent current source bus, and the second input contact of described door switch is parallel-connected to detects loop independent current source bus.
5, opening or closing of elevator door lock according to claim 1 detects contact short circuit protective device, and it is characterized in that: described door switch state-detection and controller are microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200606524U CN201258211Y (en) | 2008-07-10 | 2008-07-10 | Elevator door switch detecting contact short circuit guard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200606524U CN201258211Y (en) | 2008-07-10 | 2008-07-10 | Elevator door switch detecting contact short circuit guard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258211Y true CN201258211Y (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200606524U Expired - Lifetime CN201258211Y (en) | 2008-07-10 | 2008-07-10 | Elevator door switch detecting contact short circuit guard device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258211Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997831A (en) * | 2012-12-13 | 2013-03-27 | 广州市特种机电设备检测研究院 | Device and method for measuring engagement lengths of locking elements of elevator doors |
| CN105829232A (en) * | 2013-12-18 | 2016-08-03 | 因温特奥股份公司 | Safety system for an elevator system |
| CN106185570A (en) * | 2016-08-26 | 2016-12-07 | 上海新时达电气股份有限公司 | The detection device of door lock of elevator short circuit |
| CN106744112A (en) * | 2016-12-27 | 2017-05-31 | 快意电梯股份有限公司 | The detection circuit and detection method of elevator door lock loop short circuit |
| CN108675076A (en) * | 2018-07-20 | 2018-10-19 | 上海新时达电气股份有限公司 | Door lock short-circuit detecting device |
| CN110407039A (en) * | 2019-07-26 | 2019-11-05 | 上海三菱电梯有限公司 | Elevator safety loop detection device |
| CN110861985A (en) * | 2018-08-28 | 2020-03-06 | 江苏西德电梯有限公司 | Elevator door lock cable detection method and device |
| CN113371565A (en) * | 2021-06-09 | 2021-09-10 | 杭州优迈科技有限公司 | Landing door detection device and landing door detection method |
-
2008
- 2008-07-10 CN CNU2008200606524U patent/CN201258211Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997831A (en) * | 2012-12-13 | 2013-03-27 | 广州市特种机电设备检测研究院 | Device and method for measuring engagement lengths of locking elements of elevator doors |
| CN105829232A (en) * | 2013-12-18 | 2016-08-03 | 因温特奥股份公司 | Safety system for an elevator system |
| CN105829232B (en) * | 2013-12-18 | 2017-12-08 | 因温特奥股份公司 | Security system for lift facility |
| US10364127B2 (en) | 2013-12-18 | 2019-07-30 | Inventio Ag | Elevator installation safety system and method of checking same |
| CN106185570A (en) * | 2016-08-26 | 2016-12-07 | 上海新时达电气股份有限公司 | The detection device of door lock of elevator short circuit |
| CN106744112A (en) * | 2016-12-27 | 2017-05-31 | 快意电梯股份有限公司 | The detection circuit and detection method of elevator door lock loop short circuit |
| CN106744112B (en) * | 2016-12-27 | 2022-09-09 | 快意电梯股份有限公司 | Detection circuit and detection method for short circuit of elevator door lock loop |
| CN108675076A (en) * | 2018-07-20 | 2018-10-19 | 上海新时达电气股份有限公司 | Door lock short-circuit detecting device |
| CN108675076B (en) * | 2018-07-20 | 2023-08-15 | 上海新时达电气股份有限公司 | Door lock short circuit detection device |
| CN110861985A (en) * | 2018-08-28 | 2020-03-06 | 江苏西德电梯有限公司 | Elevator door lock cable detection method and device |
| CN110407039A (en) * | 2019-07-26 | 2019-11-05 | 上海三菱电梯有限公司 | Elevator safety loop detection device |
| CN113371565A (en) * | 2021-06-09 | 2021-09-10 | 杭州优迈科技有限公司 | Landing door detection device and landing door detection method |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |