CN109132813A - Elevator gate circuit and its short circuit detection method - Google Patents
Elevator gate circuit and its short circuit detection method Download PDFInfo
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- CN109132813A CN109132813A CN201811050774.XA CN201811050774A CN109132813A CN 109132813 A CN109132813 A CN 109132813A CN 201811050774 A CN201811050774 A CN 201811050774A CN 109132813 A CN109132813 A CN 109132813A
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- 238000012360 testing method Methods 0.000 claims abstract description 202
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The present invention discloses a kind of elevator gate circuit, including safety switch circuit, one end of safety switch circuit is equipped with safety switch test side, it further includes at least one layer of door lock circuit and at least one gate lock circuit, layer door lock circuit, car door lock circuit in parallel is between safety switch test side and DC power supply, and a layer door lock test side is equipped on each layer door lock circuit, car door lock test side is equipped on each gate lock circuit, it can be shorted between safety switch test side and at least one layer of door lock test side or/and between safety switch test side and an at least car door lock test side, when layer door lock test side, when at least one of car door lock test side is shorted, elevator can be made to stop transport, there is no erroneous judgements, guarantee the accuracy of the testing result of elevator gate circuit, and then guarantee the safety of elevator operation, circuit design is simpler simultaneously.Invention additionally discloses a kind of short circuit detection methods of elevator gate circuit.
Description
Technical field
The present invention relates to elevator technology field more particularly to a kind of elevator gate circuit and its it is shorted detection method.
Background technique
In elevator maintenance, field service personnel is usually shorting out car door lock or layer door lock to ensure to repair safety, but
Often there is the case where shorting stub is not dismantled after maintenance, this is quite serious security risk.For this purpose, existing way is
Elevator gate circuit is set, and elevator gate circuit is detected, after opening the door in the case where elevator operates normally, is able to detect
Whether the signal that elevator is closed the door out disconnects, and otherwise elevator stops ladder and reports failure.
Existing elevator gate circuit is by car door lock and layer door lock series design, and as shown in Figure 1 and Figure 2, Fig. 1 is shown only
For the elevator gate circuit of a gate, Fig. 2 show the elevator gate circuit for two gates.By taking Fig. 1 as an example, when elevator exists
When running under normal condition, after elevator executes door open command and opens the door, layer door lock test side 24 and car door lock test side 22 are all
Not electric, elevator control system detects that both of the aforesaid test side all without electricity, then determines that elevator is carrying out door opening process,
And having short circuit without discovery, elevator is normal.And when carrying out maintenance to elevator, there are following several short circuit sides for elevator gate circuit
Formula:
One, it is shorted safety switch test side 03 and layer door lock test side 24, at this point, elevator is in normal state, elevator is held
After row door open command and enabling, there is electricity in layer door lock test side 24, and elevator control system detects that a layer door lock test side 24 has
Electricity, it was demonstrated that layer gate circuit is shorted, elevator device report failure, and is unable to run elevator；
Two, it is shorted safety switch test side 03 and car door lock test side 22, at this point, elevator is in normal state, elevator is held
After row door open command and enabling, there is electricity in car door lock test side 22, and elevator control system detects that car door lock test side 22 has
Electricity, it was demonstrated that gate circuit is shorted, elevator device report failure, and is unable to run elevator；
Three, it is shorted layer door lock test side 24 and car door lock test side 22, at this point, elevator is in normal state, elevator is executed
After door open command and enabling, 24 end of layer door lock test side is not electric, but because end 24,22 is shorted, then car door lock test side
22 also without electricity, therefore elevator device is determined as that elevator is not shorted, and elevator is normal, therefore controls elevator operation, just goes out at this time
Existing system misjudgment run elevator still can when open, and there are biggish security risks.And this erroneous judgement is such as
It is shown in Fig. 2 be directed to two gates and other for multiple gates setting gate circuits in it is particularly evident, because in this gate circuit
All car door lock, layer door lock are connected, when being shorted between any layer door lock test side 24 and car door lock test side 22, all
The case where will appear above-mentioned erroneous judgement.
Therefore, it is necessary to provide, one kind can be avoided erroneous judgement and the simple elevator gate circuit of circuit structure and its short circuit detect
Method, to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide one kind can be avoided erroneous judgement and the simple elevator gate circuit of circuit structure.
Another object of the present invention is to provide a kind of elevator door short circuit detection methods that can be avoided erroneous judgement.
To achieve the above object, the technical solution of the present invention is as follows: providing a kind of elevator gate circuit, including safety open is powered-down
Road, one end of the safety switch circuit are equipped with safety switch test side, further include at least one layer of door lock circuit and at least
One gate lock circuit, the layer door lock circuit, the car door lock circuit in parallel are in the safety switch test side and direct current
Between source, and it is equipped with a layer door lock test side on each layer door lock circuit, is equipped with car door lock on each gate lock circuit
Test side, wherein between the safety switch test side and at least one described layer of door lock test side or/and the safety switch is examined
Surveying between end and at least one car door lock test side can be shorted, when layer door lock test side, the car door lock test side
At least one of when being shorted, elevator can be made to stop transport.
Preferably, the layer door lock circuit includes at least one layer of door lock being connected in series and a first contactor, described
Layer door lock test side is equipped between one end of one contactor and the layer door lock, the other end of the first contactor connects
The DC power supply and ground terminal, when being shorted between the safety switch test side and layer door lock test side, the layer
There is electricity in door lock test side when elevator executes door open command.
Preferably, the layer door lock circuit further includes the first arc extinguishing electricity being parallel between the both ends of the first contactor
Road.
Preferably, first arc-suppression circuit is RC circuit.
Preferably, the gate lock circuit includes at least one car door lock and a second contactor being connected in series, described
The car door lock test side is equipped between one end of two contactors and the car door lock, the other end of the second contactor connects
The DC power supply and ground terminal, when being shorted between the safety switch test side and the car door lock test side, the sedan-chair
There is electricity in door lock test side when elevator executes door open command.
Preferably, the gate lock circuit further includes the second arc extinguishing electricity being parallel between the both ends of the second contactor
Road.
Preferably, second arc-suppression circuit is RC circuit.
Accordingly, the present invention also provides a kind of short circuit detection methods of elevator gate circuit as described above comprising following step
It is rapid:
Elevator execute close the door instruction when, detect layer door lock test side, the car door lock test side whether at least one
There is electricity；
If there are electricity at least one of layer door lock test side, the car door lock test side, control elevator and stop transport simultaneously
Report elevator faults；
If layer door lock test side, the car door lock test side without electricity, control elevator normal operation.
Preferably, if there are electricity, layer door lock test side and the safety switch test side in layer door lock test side
Between be shorted, if there is electricity in the car door lock test side, between the car door lock test side and the safety switch test side
It is shorted.
Compared with prior art, due to elevator gate circuit of the invention, there is multiple be arranged in parallel to detect in safety switch
Layer door lock circuit and gate lock circuit between end and DC power supply, and a layer door lock detection is equipped on each layer of door lock circuit
End, is equipped with car door lock test side on each gate lock circuit, safety switch test side and at least one layer of door lock test side it
Between or/and safety switch test side and at least one car door lock test side between can be shorted, when layer door lock test side,
When at least one of car door lock test side is shorted, elevator device can control elevator to stop transport, and in car door lock test side, layer door
Lock test side is when being accidentally shorted, and elevator executes door open command, layer door lock test side, car door lock test side be it is out of power, to sedan-chair
Door lock test side, layer door lock test side detect that result and actual conditions without electricity are consistent, therefore there is no erroneous judgement, institutes
To be either arranged for gate or multiple gates since layer door lock circuit, gate lock circuit to be arranged in parallel
Elevator gate circuit can guarantee the accuracy of the testing result of elevator gate circuit, and then guarantee the safety that elevator is run, and this
The layer door lock circuit of invention elevator gate circuit, the setting of car door lock circuit in parallel, compared to existing serial configuration, circuit design
It is simpler.
Accordingly, whether the short circuit detection method of elevator gate circuit of the present invention it is quasi- can be shorted progress to elevator gate circuit
True detection guarantees elevator stoppage in transit when elevator gate circuit is shorted, and then guarantee the peace of elevator operation there is no the possibility of erroneous judgement
Quan Xing.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of existing elevator gate circuit.
Fig. 2 is the structural schematic diagram of existing another elevator gate circuit.
Fig. 3 is the structural schematic diagram of one embodiment of elevator gate circuit of the present invention.
Fig. 4 is the structural schematic diagram of another embodiment of elevator gate circuit of the present invention.
Fig. 5 is the flow chart of elevator door short circuit detection method of the present invention.
Specific embodiment
The embodiment of the present invention described referring now to the drawings, similar element numbers represent similar element in attached drawing.
It is combined shown in Fig. 3, Fig. 4 first, elevator gate circuit 100 provided by the present invention, including a safety switch circuit
110, at least one layer of door lock circuit 120 and at least one gate lock circuit 130.Wherein, one end of safety switch circuit 110 connects
One end 01 of DC power supply is connect, the other end of safety switch circuit 110 is equipped with safety switch test side 03, and the safety open is powered-down
The structure and set-up mode on road 110 are the conventional arrangement of this field, therefore repeat no more.The layer door lock circuit 120, gate
Lock circuit 130 is parallel between safety switch test side 03 and the other end N25 of DC power supply, and each layer of door lock circuit 120
On be equipped with a layer door lock test side 24, be equipped with car door lock test side 22 on each gate lock circuit 130.Also, elevator door electricity
Road 100 can will be between the safety switch test side 03 and at least one layer of door lock test side 24 or/and the safety switch detects
It is shorted between end 03 and at least one car door lock test side 22, therefore, when layer door lock test side 24, car door lock test side
At least one of 22 when being shorted, and elevator control system will stop transport according to the short circuit signal control elevator detected and report elevator
Failure.
Referring now to shown in attached drawing 3-4, the different embodiments of elevator gate circuit 100 of the present invention are illustrated respectively.
Referring initially to shown in Fig. 3, in an embodiment of elevator gate circuit 100 of the present invention, it is suitable for only one gate
Elevator.Specifically, which includes a layer door lock circuit 120 and a gate lock circuit 130, the layer
Door lock circuit 120, gate lock circuit 130 are parallel between safety switch test side 03 and DC power supply terminal N25, and layer door lock electricity
Road 120 is equipped with floor door lock test side 24, and gate lock circuit 130 is equipped with car door lock test side 22, in use, can be by safety open
Test side 03 is closed to be shorted with layer door lock test side 24, it, can also be by safety the case where with simulant elevator layer door normal switching-off
Switch test side 03 is shorted with car door lock test side 22, can also will be upper the case where with simulant elevator gate normal switching-off
Two ways is stated to be shorted.Under normal circumstances, maintenance staff will not be by layer door lock test side 24 and car door lock test side 22
It is shorted, because in the case where layer door lock test side 24, car door lock test side 22 are shorted, as long as elevator door, sedan-chair
One of door is opened, that is, one of layer door lock test side 24, car door lock test side 22 without electricity, then two test sides because
It is in parallel and be all that aforementioned analog effect is not achieved without electricity.Further, it is even examined in layer door lock test side 24, car door lock
In the case that survey end 22 is accidentally shorted, the possibility of elevator device erroneous judgement is also not present, as mentioned previously, because layer door lock circuit 120,
Gate lock circuit 130 is arranged in parallel, therefore, after test side 24,22 is shorted, when elevator executes door open command, as long as layer door lock is examined
End 24, one of car door lock test side 22 are surveyed without electricity, then layer door lock test side 24, car door lock test side 22 be both without electricity,
Elevator device can't detect electric signal, and (layer door lock test side 24, car door lock are examined when elevator normal door with actual conditions for this
It is all out of power for surveying end 22) it is consistent, therefore there is no erroneous judgements.
With continued reference to shown in Fig. 3, the layer door lock circuit 120 includes that at least one layer of door lock being connected in series and one first connect
Tentaculum JMS1.In the present embodiment, multiple concatenated layer door lock KMT1, KMT2 ... KMTn are equipped with, but not limited to this.Wherein,
Layer door lock KMT1 is connected to the safety switch test side 03, and layer door lock KMTn is connect with one end of first contactor JMS1, and
Tie point between the two forms layer door lock test side 24, and the other end of first contactor JMS1 connects DC power supply terminal
N25 and ground terminal.When elevator normally executes door open command, after door-opened elevator, layer door lock test side 24 be without electricity, but when peace
After being shorted between full switch test side 03 and layer door lock test side 24, layer door lock test side 24 executes to open the door in elevator to be referred to
It enables and has electricity after opening the door, judge that layer door lock KMT1, KMT2 ... KMTn is shorted accordingly.
More specifically, the layer door lock circuit 120 further includes being parallel to the both ends of the first contactor JMS1 and rising to go out
First arc-suppression circuit 12 of arc effect.First arc-suppression circuit 121 is RC circuit, and one end is connected to a layer door lock test side
24, the other end is connected to DC power supply terminal N25 and ground terminal.
Referring again to shown in Fig. 3, the gate lock circuit 130 includes that at least one car door lock being connected in series and one second connect
Tentaculum JMS2 in the present embodiment, is equipped with a car door lock KMJ, but not limited to this.One end of car door lock KMJ is connected to safety
Test side 03 is switched, the other end of car door lock KMJ is connected to one end of second contactor JMS2 and tie point between the two
For the car door lock test side 22, the other end connection DC power supply terminal N25 and ground terminal of the second contactor JMS2, in electricity
Terraced normal when executing door open command, after door-opened elevator, car door lock test side 22 is but to work as the safety switch test side without electricity
When being shorted between 03 and car door lock test side 22, there is electricity in the car door lock test side 22 when elevator executes door open command, according to
This judges that car door lock KMJ is shorted.
Preferably, the gate lock circuit 130 further includes being parallel to the both ends of the second contactor JMS2 and playing arc extinguishing
Second arc-suppression circuit 131 of effect.Preferably, which is RC circuit, one end of the second arc-suppression circuit 131
It is connected to car door lock test side 22, the other end of the second arc-suppression circuit 131 is connected to DC power supply terminal N25 and ground terminal.
Referring now to shown in Fig. 4, in another embodiment of elevator gate circuit 100 of the present invention, suitable for setting, there are two gates
Elevator.Specifically, the safety switch circuit 110 include two layer door lock circuits 120 and two gate lock circuits 130, two
Layer 120, two gate lock circuit 130 of door lock circuit are parallel between safety switch test side 03 and DC power supply terminal N25, and every
It is equipped with a layer door lock test side 24 on a layer of door lock circuit 120, is equipped with car door lock test side on each gate lock circuit 130
22, layer door lock circuit 120, the structure of gate lock circuit 130 and set-up mode are identical as in above-described embodiment, are not repeated
Description.In use, safety switch test side 03 and at least one layer of door lock test side 24 can be shorted, it can also be by safety open
It closes test side 03 to be shorted with an at least car door lock test side 22, above two short circuit mode can also be taken simultaneously, therefore,
As long as detecting that at least one of a layer door lock test side 24, car door lock test side 22 are shorted, elevator control system is controlled
Elevator stops transport and reports elevator faults.
It is to be appreciated that for there are three tools, the elevator of four gates, the layer door lock circuit 120 of elevator gate circuit 100,
The quantity of gate lock circuit 130 is increase accordingly, and set-up mode mode as described in above-mentioned Fig. 3-4 can deduce, certainly, elevator
The quantity of gate not being limited with aforementioned list.
Below by taking elevator gate circuit 100 shown in Fig. 3 as an example, to the short circuit mode and inspection of elevator gate circuit 100 of the present invention
Principle is surveyed to be illustrated.
As shown in figure 3, elevator executes door open command under elevator normal operating condition, after enabling, layer door lock KMT1,
KMT2 ... KMTn and car door lock KMJ are disconnected, and layer door lock test side 24, car door lock test side 22 are without electricity, elevator
Control system detects that a layer door lock test side 24, car door lock test side 22 without electricity, that is, are judged to not being shorted, and controls elevator
It operates normally.
In elevator maintenance, safety switch test side 03 and layer door lock test side 24 can be shorted, can also will be pacified
Full switch test side 03 and car door lock test side 22 are shorted, and can also carry out simultaneously above two short circuit mode.
When safety switch test side 03 and layer door lock test side 24 are shorted, elevator in normal state, open by elevator execution
Door instructs, and after door-opened elevator, there is electricity in layer door lock test side 24, and first contactor JMS1 is attracted, and elevator device judges layer
Door lock KMT1, KMT2 ... KMTn are shorted, therefore it is out of service to control elevator, and reports elevator faults.
When safety switch test side 03 and car door lock test side 22 are shorted, elevator in normal state, open by elevator execution
Door instructs, and after door-opened elevator, there is electricity in car door lock test side 22, and second contactor JMS2 is attracted, and elevator device judges sedan-chair
Door lock KMJ is shorted, therefore it is out of service to control elevator, and reports elevator faults.
When layer door lock test side 24 and car door lock test side 22 are accidentally shorted, layer door lock test side 24, car door lock detection
End 22 is without electricity, and there is no the possibility of erroneous judgement, reason is: in normal state, elevator executes door open command, elevator to elevator
After enabling, layer door lock KMT1, KMT2 ... KMTn and car door lock KMJ are disconnected, layer door lock test side 24, car door lock detection
End 22 is not electric；And in the case where layer door lock test side 24, car door lock test side 22 are shorted, due to layer door lock electricity
Road 120 is arranged in parallel with gate lock circuit 130, therefore, layer door lock test side 24, car door lock test side 22 be still it is out of power,
No electricity is remained as to the testing result of two test side 24,22；This is consistent with the testing result of elevator normally at closing time,
That is, the testing result of elevator device is that correctly, there is no erroneous judgement, elevator device assert that elevator is not shorted and continues control electricity
Ladder operation.
To sum up, due to elevator gate circuit 100 of the invention, there is multiple be arranged in parallel in safety switch test side 03 and straight
Layer door lock circuit 120 and gate lock circuit 130 between galvanic electricity source, and a layer door lock inspection is equipped on each layer of door lock circuit 120
End 24 is surveyed, car door lock test side 22, safety switch test side 03 and at least one layer of door are equipped on each gate lock circuit 130
It can be shorted between lock test side 24 or/and between safety switch test side 03 and at least one car door lock test side 22, work as institute
When stating at least one of a layer door lock test side 24, car door lock test side 22 and being shorted, elevator device can be short according to what is detected
Binding fruit controls elevator and stops transport, and when car door lock test side 22, layer door lock test side 24 are accidentally shorted, elevator, which executes to open the door, to be referred to
Enable, layer door lock test side 24, car door lock test side 22 be it is out of power, to car door lock test side 22, layer door lock test side 24 examine
It measures the result without electricity to be consistent with actual conditions, therefore there is no judging by accident, so, due to by layer door lock circuit 120, gate
Lock circuit 130 is arranged in parallel, the elevator gate circuit 100, Dou Nengbao being either arranged for a gate or multiple gates
The accuracy of the testing result of elevator gate circuit 100 is demonstrate,proved, and then guarantees the safety of elevator operation, and elevator gate circuit of the present invention
100 layer door lock circuit 120, gate lock circuit 130 are arranged in parallel, and compared to existing serial configuration, circuit design is simpler
It is single.
Referring now to shown in Fig. 5, the present invention also provides a kind of short circuit detection methods of elevator gate circuit, including walk as follows
It is rapid:
Step S01: elevator execute close the door instruction when, detect layer door lock test side, the car door lock test side whether
At least one has electricity；
Step S02: if there are electricity at least one of layer door lock test side, the car door lock test side, electricity is controlled
Ladder stops transport and reports elevator faults；
Step S03: if layer door lock test side, the car door lock test side control elevator normal operation without electricity.
Preferably, if there are electricity, layer door lock test side and the safety switch test side in layer door lock test side
Between be shorted, if there is electricity in the car door lock test side, between the car door lock test side and the safety switch test side
It is shorted.
Accordingly, whether the short circuit detection method of elevator gate circuit of the present invention it is quasi- can be shorted progress to elevator gate circuit
True detection guarantees elevator stoppage in transit when elevator gate circuit is shorted, and then guarantee the peace of elevator operation there is no the possibility of erroneous judgement
Quan Xing.
The structure and principle of the other parts of elevator gate circuit according to the present invention are those of ordinary skill in the art
Known technology, is no longer described in detail herein.
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (9)
1. one end of a kind of elevator gate circuit, including safety switch circuit, the safety switch circuit is detected equipped with safety switch
End, which is characterized in that further include at least one layer of door lock circuit and at least one gate lock circuit, the layer door lock circuit, institute
Car door lock circuit in parallel is stated between the safety switch test side and DC power supply, and is equipped on each layer door lock circuit
Layer door lock test side is equipped with car door lock test side on each gate lock circuit, wherein the safety switch test side with extremely
Or/and it can between the safety switch test side and at least one car door lock test side between few one described layer of door lock test side
It is shorted, when at least one of layer door lock test side, the car door lock test side are shorted, elevator can be made to stop transport.
2. elevator gate circuit as described in claim 1, which is characterized in that the layer door lock circuit includes at least one to be connected in series
A layer of door lock and a first contactor are equipped with the layer door lock and detect between one end of the first contactor and the layer door lock
The other end at end, the first contactor connects the DC power supply and ground terminal, the safety switch test side and the layer
When being shorted between door lock test side, there is electricity in layer door lock test side when elevator executes door open command.
3. elevator gate circuit as claimed in claim 2, which is characterized in that the layer door lock circuit further includes being parallel to described
The first arc-suppression circuit between the both ends of one contactor.
4. elevator gate circuit as claimed in claim 3, which is characterized in that first arc-suppression circuit is RC circuit.
5. elevator gate circuit as described in claim 1, which is characterized in that the gate lock circuit includes at least one to be connected in series
A car door lock and a second contactor are equipped with the car door lock and detect between one end of the second contactor and the car door lock
The other end at end, the second contactor connects the DC power supply and ground terminal, the safety switch test side and the sedan-chair
When being shorted between door lock test side, there is electricity in the car door lock test side when elevator executes door open command.
6. elevator gate circuit as claimed in claim 5, which is characterized in that the gate lock circuit further includes being parallel to described
The second arc-suppression circuit between the both ends of two contactors.
7. elevator gate circuit as claimed in claim 6, which is characterized in that second arc-suppression circuit is RC circuit.
8. a kind of short circuit detection method of the described in any item elevator gate circuits of claim 1-7, which is characterized in that including as follows
Step:
When elevator executes shutdown instruction, detect layer door lock test side, whether at least one has electricity for the car door lock test side；
If there are electricity at least one of layer door lock test side, the car door lock test side, control elevator and stop transport and report electricity
Terraced failure；
If layer door lock test side, the car door lock test side without electricity, control elevator normal operation.
9. being shorted detection method as claimed in claim 8, which is characterized in that described if there is electricity in layer door lock test side
It is shorted between layer door lock test side and the safety switch test side, if there are electricity, the gate in the car door lock test side
It is shorted between lock test side and the safety switch test side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050774.XA CN109132813B (en) | 2018-09-10 | 2018-09-10 | Elevator door circuit and short circuit detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050774.XA CN109132813B (en) | 2018-09-10 | 2018-09-10 | Elevator door circuit and short circuit detection method thereof |
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| Publication Number | Publication Date |
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| CN109132813A true CN109132813A (en) | 2019-01-04 |
| CN109132813B CN109132813B (en) | 2023-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054063A (en) * | 2019-04-16 | 2019-07-26 | 快意电梯股份有限公司 | Elevator cage door door-closing in-place verifies device and method |
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| CN202186817U (en) * | 2011-06-02 | 2012-04-11 | 恒达富士电梯有限公司 | Elevator door lock safety return circuit |
| CN106786351A (en) * | 2016-12-27 | 2017-05-31 | 东莞市三星电梯有限公司 | Elevator safety loop ground protection circuit |
| CN206407772U (en) * | 2016-12-27 | 2017-08-15 | 快意电梯股份有限公司 | The detection circuit of elevator door lock loop short circuit |
| CN209065244U (en) * | 2018-09-10 | 2019-07-05 | 快意电梯股份有限公司 | Elevator gate circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054063A (en) * | 2019-04-16 | 2019-07-26 | 快意电梯股份有限公司 | Elevator cage door door-closing in-place verifies device and method |
| CN110054063B (en) * | 2019-04-16 | 2023-11-07 | 快意电梯股份有限公司 | Device and method for verifying in-place closing of elevator car door |
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