CN110407039A - Elevator safety loop detection device - Google Patents
Elevator safety loop detection device Download PDFInfo
- Publication number
- CN110407039A CN110407039A CN201910682124.5A CN201910682124A CN110407039A CN 110407039 A CN110407039 A CN 110407039A CN 201910682124 A CN201910682124 A CN 201910682124A CN 110407039 A CN110407039 A CN 110407039A
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- Prior art keywords
- safety
- switch
- normally
- elevator
- combination
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a kind of elevator safety loop detection devices, including elevator safety loop can detect the short circuit situation of switch by the variation of the series sequence of elevator safety loop respectively.For the present apparatus in the detection process without bypassing any electric switch, safety return circuit is always maintained at effective status.Any electric switch is not cut off out safety return circuit in the detection process by the present apparatus, in the detection process, if electric switch can normal reset, safety return circuit being capable of normally.
Description
Technical field
The present invention relates to elevators fields, and in particular to a kind of elevator safety loop detection device.
Background technique
In the safety return circuit of elevator or escalator, safety return circuit is often used as using the series connection of multiple electric switches,
For protecting the personal safety of passenger and service personnel.For the electric switch of single movement, electrical system can be relatively simple
Detected by the end of safety return circuit, can judge whether the safety switch is shorted.But for two or two
A above electric switch moved at the same time, is individually shorted, system is can not to pass through peace in case of one of electric switch
The end point detection of full loop goes out to have switch to be shorted.For example, identical two hydraulic bjuffers of (1) operating position are pressed simultaneously
Under, the electric switch of safety switch on each hydraulic bjuffer simultaneously operation (2) elevator cage door and layer door, when door-opened elevator,
When two safety switch simultaneously operation (3) cage side limiter of speeds and counterweight-side limiter of speed reach movement speed, on each limiter of speed
Safety switch simultaneously operation.
The electric switch of elevator cage door and layer door is detected respectively at present, existing partial monopoly has involved.Such as
Shown in attached drawing 1, utility model patent 201520459465.3, a kind of detection circuit of door lock of elevator, the patent circuit is mainly former
Reason is when Elevator landing opens the door, is attracted 130 relays, bypass layer door and car gate contact in the short time, and direction is by safety return circuit
Voltage is applied to the rear end of car gate contact front door gate lock-switch, and front door gate lock-switch is judged by X26 test point with this
Whether contact is shorted.
This method realizes layer door, the function that car gate contact detects respectively by relatively simple method.But the party
Method disadvantage is also clearly.Elevator bypasses gate and layer door contact in enabling leveling, and the safety of directly conducting rear side is returned
Road, there is huge risk hidden danger.
For another example 201810297039.2 elevator door loop detector of patent of invention, as shown in Fig. 2, the patent is detecting
When, layer door, car gate contact are cut out from safety return circuit by relay, then be sent into electricity from the junction of layer door and car gate contact
Pressure, then whether detection layers door, car gate contact are shorted respectively.The patent effectively avoids utility model:
201520459465.3 bypassing safety circuit in the detection process, the shortcomings that causing safety return circuit to be surprisingly connected.
But the patented method will lead to safety return circuit and be constantly in pressure and cut when detecting the contact relay SRD and being adhered
Except state, elevator is caused to be unable to operate normally.The patented method introduces a new event in the original safety return circuit of elevator
Hinder possibility.Lead to the reliability decrease of elevator.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of elevator safety loop detection devices, before guaranteeing safety
It puts, continues to guarantee that tested safety switch is connected in original safety return circuit, do not influence the regular event of safety return circuit.
In order to solve the above technical problems, the present invention provides a kind of elevator safety loop detection device, including elevator safety returns
Road, the elevator safety loop include the first safety detection circuit, and the first safety detection circuit includes the first safety switch
Component, including the combination of the first safety switch and the combination of the second safety switch；The first safety switch combination and second peace
Full switch combination is connected in series；First relay circuit, first relay circuit include the first normally opened contact, the second normally opened touching
Point, the first normally-closed contact, the second normally-closed contact are with the first relay coil, first normally opened contact and first safety open
It connects again with second normally opened contact after closing component series connection；First normally-closed contact and the first safety switch assembly string
It connects again with first normally-closed contact after connection；First control signal, the first control signal pass through the first relay of control
The disconnection of coil is attracted to control the folding of first and second normally opened contact and the first and second normally-closed contact.
Preferably, the first safety detection circuit further include: the first safety detection circuit input end and the first safety inspection
The first end of slowdown monitoring circuit output end, the first end of first normally opened contact and first normally-closed contact is respectively with described
One safety detection circuit input end is connected；The second of the second end of second normally opened contact and second normally-closed contact
End is connected with the first safety detection circuit output end respectively.
Preferably, the first safety detection circuit further include: the first test point is arranged in the first safety switch group
It closes between the combination of the second safety switch；First test point is for detecting voltage.
Preferably, further includes: the second safety detection circuit, the second safety detection circuit include the second safety switch group
Part comprising the combination of third safety switch and the combination of the 4th safety switch, the third safety switch combination and the 4th peace
Full switch combination is connected in series；The second safety detection circuit further includes the second relay circuit, second relay circuit
Including third normally opened contact, the 4th normally opened contact, third normally-closed contact, the 4th normally-closed contact and the first relay coil, institute
It states after third normally opened contact is connected with second safety switch assembly and connects again with the 4th normally opened contact, the third is normal
Closed contact is connected with the 4th normally-closed contact again after connecting with second safety switch assembly；The second safety detection electricity
Road further includes first control signal, and the first control signal is by the disconnection or actuation of the first relay coil of control to control
The folding of described third and fourth normally opened contact and third and fourth normally-closed contact；The second safety detection circuit and first safety
Detection circuit is connected in series to form safety detection electrical combination；Third safety detection circuit, the third safety detection circuit packet
It includes, the 5th normally opened contact, the 6th normally opened contact, the 5th normally-closed contact, the 6th normally-closed contact and the second relay coil are described
5th normally opened contact is connected with the 6th normally opened contact again after connecting with the safety detection electrical combination, and the described 5th is normally closed
It connects again with the 6th normally-closed contact after connecting with the safety detection electrical combination contact；Second control signal, described
Two control signals by control the second relay coil disconnection or be attracted with control the five, the six normally opened contact and the 5th,
The folding of six normally-closed contacts.
Preferably, further include the input terminal and output end of elevator safety loop, the first end of the 5th normally opened contact with
And the first end of the 5th normally-closed contact is connected with the input terminal of the elevator safety loop respectively；The 6th normally opened touching
The second end of point and the second end of the 6th normally-closed contact are connected with the output end of elevator safety loop respectively.
Preferably, the third safety detection circuit further include: the second test point is arranged in the third safety switch group
It closes between the combination of the 4th safety switch；Second test point is for detecting voltage.
Preferably, the first safety switch group is combined into elevator cage door lock switch.
Preferably, the second safety switch group is combined at least one elevator door lock-switch.
Preferably, the first safety switch group is combined into elevator front door gate lock-switch, the second safety switch combination
For elevator back door gate lock-switch.
Preferably, the third safety switch group is combined into gate layer door interlock switch before elevator, the 4th safety switch combination
For gate layer door interlock switch after elevator.
Detailed description of the invention
Fig. 1 is a kind of detection circuit figure of door lock of elevator of the prior art.
Fig. 2 is the detection circuit figure of another door lock of elevator of the prior art.
Fig. 3 is the safety return circuit detection device circuit diagram of the embodiment of the present invention one.
Fig. 4-5 is current direction of the safety return circuit detection device of the embodiment of the present invention one in the case where switching different action situations
Schematic diagram.
Fig. 6 is the safety return circuit detection device circuit diagram of the embodiment of the present invention two.
Fig. 7-8 is current direction of the safety return circuit detection device of the embodiment of the present invention two in the case where switching different action situations
Schematic diagram.
Fig. 9 is the safety return circuit detection device circuit diagram of the embodiment of the present invention three.
Figure 10-12 is electric current stream of the safety return circuit detection device of the embodiment of the present invention three in the case where switching different action situations
To schematic diagram.
Figure 13 is the safety return circuit detection device circuit diagram of the embodiment of the present invention four.
Figure 14-17 is electric current stream of the safety return circuit detection device of the embodiment of the present invention four in the case where switching different action situations
To schematic diagram.
Figure 18 is the safety return circuit detection device circuit diagram of the embodiment of the present invention five.
Figure 19-22 is electric current stream of the safety return circuit detection device of the embodiment of the present invention five in the case where switching different action situations
To schematic diagram.
Description of symbols
10 first safety detection circuit, 11 first safety switch assembly
11.1 first safety switches combine the combination of 11.2 second safety switches
12 first test point, 13 first relay circuit
13.1 first normally opened contact, 13.2 second normally opened contact
13.3 first normally-closed contact, 13.4 second normally-closed contact
13.5 the first relay coil
20 second safety detection circuit, 21 second safety switch assembly
21.1 third safety switches combine the combination of 21.2 the 4th safety switches
22 second test point, 23 second relay circuit
The 4th normally opened contact of 23.1 third normally opened contact 23.2
The 4th normally-closed contact of 23.3 third normally-closed contact 23.4
The 5th normally opened contact of 30 third safety detection circuit 33.1
The 5th normally-closed contact of 33.2 the 6th normally opened contact 33.3
33.4 the 6th normally-closed contact, 33.5 second relay coil
50 safety detection electrical combinations
Specific embodiment
Below in conjunction with attached drawing, clear, complete description is carried out to the technical solution in the present invention, it is clear that described
Embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment one
As shown in figure 3, present embodiment discloses a kind of elevator safety loop detection device, including elevator safety loop, institute
Stating elevator safety loop includes the first safety detection circuit 10, and the first safety detection circuit 10 includes the first safety switch group
Part 11, the first relay circuit 13 and first control signal.
First safety switch assembly 11 includes the combination 11.1 of the first safety switch and the second safety switch combination 11.2；It is described
First safety switch combination 11.1 combines 11.2 with second safety switch and is connected in series.
First relay circuit 13 includes the first normally opened contact 13.1, the second normally opened contact 13.2, the first normally-closed contact
13.3, the second normally-closed contact 13.4 is with the first relay coil 13.5, the first normally opened contact 13.1 and first safety switch
Component 11 is connected with second normally opened contact 13.2 again after connecting；First normally-closed contact 13.3 and first safety open
It closes after component 11 is connected and connects again with first normally-closed contact 13.3.
First control signal obtains electric or power loss by the first relay coil 13.5 of control to control described first and second often
Open the folding of contact and the first and second normally-closed contact.
The first safety detection circuit 10 further include: 10 input terminal of the first safety detection circuit and the first safety detection electricity
The first end of 10 output end of road, the first end of first normally opened contact 13.1 and first normally-closed contact 13.3 respectively with
First safety detection circuit, 10 input terminal is connected；The second end of second normally opened contact 13.2 and described second is often
The second end of closed contact 13.4 is connected with 10 output end of the first safety detection circuit respectively.
The first safety detection circuit 10 further include: the first test point 12, setting are combined in first safety switch
11.1 and second safety switch combination 11.2 between, for detecting voltage.
When 11.2 switch simultaneously operation of the combination 11.1 of concatenated first safety switch and the combination of the second safety switch, safety
Circuit rear class loses voltage, can not judge the first safety switch combination 11.1 and second by step voltage after safety return circuit at this time
The case where safety switch combination 11.2 is shorted with the presence or absence of single switch.
At this point, can judge the first safety switch group respectively by the first test point 12 and the first relay circuit added
Whether conjunction 11.1 and 11.2 switch of the second safety switch combination normally disconnect.
When first control signal, which controls the first relay coil 13.5, to be disconnected, current direction is as shown in figure 4, the first detection
Point detects voltage, then the first safety switch combination 11.1 is shorted, and the second safety switch combination 11.2 is not shorted.
If voltage is not detected in the first test point, then the first safety switch combination 11.1 is not shorted, the second safety switch group
Closing 11.2 can not judge whether to be shorted.
At this point, first control signal control the first relay coil 13.5 be attracted, the current direction of safety return circuit become as
Shown in Fig. 5.If the first test point 12 detects voltage, then 11.2 switch of the second safety switch combination is shorted, entire detection process
It completes.If voltage is not detected in the first test point 12, then 11.2 switch of the second safety switch combination is not shorted, entire detection process
It completes.
The present apparatus does not bypass any safety switch, and safety is higher.The present apparatus is the electric current for changing safety return circuit
Direction can detect the short-circuit conditions of single switch, and in the detection process, safety switch is still connected in safety return circuit
Guarantee original security function.Meanwhile the present apparatus under the premise of guaranteeing safety, continues to guarantee quilt when detecting safety return circuit
The safety switch of survey is connected in original safety return circuit.Even if relay contact is adhered or can not be attracted failure, also not
It will affect the regular event of safety return circuit.
Embodiment two
On the basis of example 1, the first safety switch combination 11.1 is gate lock-switch, second safety
Switch combination 11.2 is layer door interlock switch.Further, the layer door interlock switch can be multiple.
As shown in fig. 6, concatenated gate lock-switch and layer door interlock switch simultaneously switch off when elevator reaches stop and opens the door,
Safety return circuit rear class loses voltage.At this point, can not judge that gate lock-switch and layer door lock are opened by step voltage after safety return circuit
It closes with the presence or absence of the case where being shorted respectively.
At this point, can judge whether gate lock-switch and layer door interlock switch are normal respectively by the first test point and relay
It disconnects.
When first control signal, which controls the first relay coil 13.5, to be disconnected, current direction is as shown in fig. 7, such as the first inspection
Measuring point detects voltage, then gate lock-switch is shorted, and layer door interlock switch is not shorted.If voltage is not detected in the first test point, then
Gate lock-switch is not shorted, and layer door interlock switch can not judge whether to be shorted.
At this point, first control signal control the first relay coil 13.5 be attracted, the current direction of safety return circuit become as
Shown in Fig. 8.If the first test point detects voltage, then layer door interlock switch is shorted, and entire detection process is completed.Such as the first test point
Voltage is not detected, then layer door interlock switch is not shorted, and entire detection process is completed.
Embodiment three
On the basis of example 1, the first safety switch combination 11.1 is front door gate lock-switch and back door gate
Lock-switch is connected in series, and the second safety switch combination 11.2 is connected in series for preceding gate layer door interlock switch and rear gate layer door interlock switch.
Further, the layer door interlock switch can be multiple.
As shown in figure 9, if this layer is that front door is opened the door, passing through the side of embodiment one when elevator reaches stop and opens the door
Method can detect front door gate lock-switch respectively and whether preceding gate layer door interlock switch is shorted.If this layer is that back door is opened the door, lead to
The method for crossing embodiment one can detect back door gate lock-switch respectively and whether rear gate layer door interlock switch is shorted.
But if the floor that elevator reaches is front/rear door simultaneously when opening the door, by embodiment once method can not examine
The case where survey front door gate lock-switch and back door gate lock-switch are shorted any one.Equally, gate layer door before can not also detecting
The case where lock-switch and rear gate layer door lock are shorted any one group.Therefore, it need to be detected using method control as follows.Work as elevator
Stop is reached, and the passenger of this layer instructs when opening the door for two sides, elevator first sends front door door open command, and back door remains turned-off shape
State.
Safety return circuit flow direction at this time is as shown in Figure 10.When detecting the first test point is low level, back door car door lock
Switch is closed state, therefore, it is possible to judge that front door has already turned on, front door gate lock-switch is normally disconnected, and is not shorted.When always
When detecting that the first test point is high level, judge that front door gate lock-switch is shorted.
At this point, the first relay coil 13.5 of control is attracted, safety return circuit current direction is as shown in figure 11.When detecting
When one test point is low level, rear gate layer door interlock switch is closed state, and therefore, the preceding gate layer door interlock switch normal off that is positive is opened, not
It is shorted.
When detecting the first test point is high level, preceding gate layer door interlock switch is shorted.First relay coil 13.5 is protected
Hold attracting state.The detection of front door gate lock-switch and layer door interlock switch relies on the attracting state of relay to control.Relay
The actuation rate of release of device is millisecond rank.Therefore, front door gate lock-switch and layer door interlock switch testing process only need 1 second left side
The right side, tens of milliseconds is only opened at front door at this time, and elevator issues back door door open command.Front/rear door is staggered tens of milliseconds enabling for passenger
For there is no influence in any experience.
It is finished when front/rear door opens the door, passenger, which passes in and out carriage, to terminate, and when stop is left in carriage preparation shutdown, elevator is sent out first
Front door, which is closed the door, out instructs.After 2 seconds, elevator issues back door shutdown instruction.
After elevator receives the monitoring signal of front door closing, when back door is also not turned off, into back door car door lock and layer door lock
Testing process.
When detecting the first test point is low level, preceding gate layer door interlock switch is closed state, therefore rear door lock is opened
Normal disconnection is closed, is not shorted.
When detecting the first test point is high level, preceding gate layer door interlock switch is closed state, therefore rear door lock is opened
It closes and is shorted.
At this point, control relay release, safety return circuit current direction is as shown in figure 12: when detecting that the first test point is low
When level, front door gate lock-switch is closed state, therefore back door door interlock switch normally disconnects, and is not shorted.When detecting first
When test point is high level, front door gate lock-switch is closed state, therefore back door door interlock switch is shorted.Back door gate lock-switch
And the detection of layer door interlock switch only needs 1 second or so.Front/rear door is differed one second and is closed the door, and is not had in any experience for passenger
It influences.
Example IV
On the basis of example 1, the elevator safety loop detection device of the present embodiment further includes the second safety detection electricity
Road 20, third safety detection circuit 30, second control signal, the second test point 22.
The second safety detection circuit 20 includes the second safety switch assembly 21 comprising the combination of third safety switch
21.1 and the 4th safety switch combination 21.2, third safety switch combination 21.1 combine 21.2 with the 4th safety switch
It is connected in series；The second safety detection circuit 20 further includes the second relay circuit 23, and second relay circuit 23 includes
Third normally opened contact 23.1, the 4th normally opened contact 23.2, third normally-closed contact 23.3, the 4th normally-closed contact 23.4 and first after
Electric apparatus coil 13.5, the third normally opened contact 23.1 are normal with the described 4th again after connecting with second safety switch assembly 21
Open the series connection of contact 23.2, the third normally-closed contact 23.3 connect with second safety switch assembly 21 after again with the described 4th
Normally-closed contact 23.4 is connected；The second safety detection circuit 20 further includes first control signal, and the first control signal is logical
It crosses the disconnection of the first relay coil 13.5 of control or is attracted to control third and fourth described normally opened contact and third and fourth normally closed touching
The folding of point；The second safety detection circuit 20 is connected in series to form safety detection electricity with the first safety detection circuit 10
Road combination 50.
The third safety detection circuit 30 includes that the 5th normally opened contact 33.1, the 6th normally opened contact the 33.2, the 5th are normally closed
Contact 33.3, the 6th normally-closed contact 33.4 and the second relay coil 33.5, the 5th normally opened contact 33.1 and the peace
Full inspection slowdown monitoring circuit combination 50 series connection after connect again with the 6th normally opened contact 33.2, the 5th normally-closed contact 33.3 with it is described
Safety detection electrical combination 50 is connected with the 6th normally-closed contact 33.4 again after connecting；
The second control signal by the disconnection of the second relay coil 33.5 of control or be attracted to control the described 5th,
The folding of six normally opened contacts and the five, the six normally-closed contacts.
The setting of second test point 22 is in third safety switch combination 21.1 and the 4th safety switch combination 21.2
Between；Second test point 22 is for detecting voltage.
Further, the elevator safety loop detection device further includes the input terminal and output end of elevator safety loop,
The first end of 5th normally opened contact 33.1 and the first end of the 5th normally-closed contact 33.3 are pacified with the elevator respectively
The input terminal of full loop is connected；The of the second end of 6th normally opened contact 33.2 and the 6th normally-closed contact 33.4
Two ends are connected with the output end of elevator safety loop respectively.
As shown in figure 13, when concatenated first to fourth safety switch, which combines, to be moved at the same time, safety return circuit rear class is lost
Voltage can not judge the combination of first to fourth safety switch with the presence or absence of single switch by step voltage after safety return circuit at this time
The case where short circuit.At this point, can judge first to fourth safety switch respectively by the first and second test point and relay added
Whether normally disconnect.
When the first relay coil 13.5 and the second relay coil 33.5 are not attracted, safety return circuit current direction is such as
Shown in Figure 14.If the first test point 12 detects voltage, then the first safety switch combination 11.1 is shorted.Meanwhile second test point
22 such as detect voltage, then the second safety switch combination 11.2, third safety switch combination 21.1 are shorted, and the second test point is such as
Voltage is not detected, then the second safety switch combination 11.2, third safety switch combination 21.1 are not shorted all.Such as the first detection
Voltage is not detected in point 12, then the first safety switch combination 11.1 is not shorted.Meanwhile second test point 22 such as detect voltage,
Voltage is such as not detected in then system exception, the second test point 22, can not judge that the second safety switch combines 11.2, third safety open
It closes combination 21.1 and is shorted situation.
At this point, control signal controls, the first relay coil 13.5 is attracted, the second relay coil 33.5 is not attracted, safety
The current direction in circuit becomes as shown in figure 15.If the second test point measures voltage, then the 4th safety switch combination 21.2 switchs
It is shorted.Meanwhile first test point detect voltage, then third safety switch combines the combination of the 21.1, second safety switch and 11.2 opens
Guan Jun is shorted, and voltage is such as not detected in the second test point, then third safety switch combines the 21.1, second safety switch combination 11.2
It is not shorted all.If voltage is not detected in the second test point, then 21.2 switch of the 4th safety switch combination is not shorted.Meanwhile the
One test point such as detects voltage, then system exception, and voltage is such as not detected in the first test point, can not judge third safety switch
It combines the 21.1, second safety switch combination 11.2 and is shorted situation.
At this point, control signal controls, the first relay coil 13.5 is attracted, the second relay coil 33.5 is attracted, and safety is returned
The current direction on road becomes as shown in figure 16.If the second test point measures voltage, then 21.1 switch of third safety switch combination is short
It connects.Meanwhile first test point detect voltage, then the 4th safety switch combine the 21.2, first safety switch combination 11.1 switch
It is shorted, voltage is such as not detected in the second test point, then the 4th safety switch combines the 21.2, first safety switch combination 11.1 not
All it is shorted.If voltage is not detected in the second test point, then 21.1 switch of third safety switch combination is not shorted.Meanwhile first
Test point such as detects voltage, then system exception, and voltage is such as not detected in the first test point, can not judge the 4th safety switch group
It closes the 21.2, first safety switch combination 11.1 and is shorted situation.
At this point, control the first relay coil of signal control relay 13.5 is not attracted, the second relay coil 33.5 is inhaled
It closes, the current direction of safety return circuit becomes as shown in figure 17.If the first test point detects voltage, then the second safety switch combines
11.2 switch is shorted.Meanwhile second test point such as detect voltage, then the first safety switch combine the 11.1, the 4th safety switch
21.2 switch of combination is shorted, and voltage is such as not detected in the second test point, then the first safety switch combines the 11.1, the 4th safety open
Combination 21.2 is closed not to be shorted all.If voltage is not detected in the first test point, then 11.2 switch of the second safety switch combination is not short
It connects.Meanwhile second test point such as detect voltage, then voltage is such as not detected in system exception, the second test point, can not judge
One safety switch combines the 11.1, the 4th safety switch combination 21.2 and is shorted situation.
By the variation of the series sequence of above-mentioned four kinds of safety return circuits, it can detect that the first safety switch combines respectively
The short circuit situation of 11.1 to the 4th safety switches combination, 21.2 switch.
For the present apparatus in the detection process without bypassing any electric switch, safety return circuit is always maintained at effective status.This
Any electric switch is not cut off out safety return circuit in the detection process by device, in the detection process, if electric switch
Can normal reset, safety return circuit being capable of normally.
Embodiment five
On the basis of example IV, first safety switch combination 11.1 is front door gate lock-switch, described second
Safety switch combination 11.2 is back door gate lock-switch, and the third safety switch combination 21.1 is preceding gate layer door interlock switch, institute
Stating the 4th safety switch combination 21.2 is rear gate layer door interlock switch, and further, the layer door interlock switch can be multiple.
As shown in figure 18, when elevator reach leveling zone after, front/rear door opens simultaneously, concatenated front door gate lock-switch, after
Door gate lock-switch, preceding gate layer door interlock switch, rear gate layer door interlock switch simultaneously operation, safety return circuit rear class lose voltage, at this time
Can not be judged by step voltage after safety return circuit front door gate lock-switch, back door gate lock-switch, preceding gate layer door interlock switch, after
The case where gate layer door interlock switch is shorted with the presence or absence of single switch.At this point, passing through the first test point of test point added, the second inspection
Measuring point and the first relay coil 13.5, the second relay coil 33.5 can judge front door gate lock-switch, back door sedan-chair respectively
Whether door interlock switch, preceding gate layer door interlock switch, rear gate layer door interlock switch normally disconnect.
When the first relay coil 13.5, the second relay coil 33.5 are not attracted, safety return circuit current direction is such as
Shown in Figure 19.If the first test point detects voltage, then gate lock-switch in front door is shorted.Meanwhile second test point such as detect
Voltage, then back door gate lock-switch, preceding gate layer door interlock switch are shorted, and voltage is such as not detected in the second test point, then back door sedan-chair
Door interlock switch, preceding gate layer door interlock switch are not shorted all.Voltage is not detected such as the first test point, then front door gate lock-switch is not
It is shorted.Meanwhile second test point such as detect voltage, then voltage is such as not detected in system exception, the second test point, can not judge
Back door gate lock-switch, preceding gate layer door interlock switch are shorted situation.
At this point, control signal controls, the first relay coil 13.5 is attracted, the second relay coil 33.5 is not attracted, safety
The current direction in circuit becomes shown in Figure 20.If the second test point measures voltage, then rear gate layer door interlock switch is shorted.Meanwhile the
One test point detects voltage, then preceding gate layer door interlock switch, back door gate lock-switch are shorted, and the second test point is such as not detected
Voltage, then preceding gate layer door interlock switch, back door gate lock-switch are not shorted all.Voltage is not detected such as the second test point, then after
Gate layer door interlock switch is not shorted.Meanwhile first test point such as detect voltage, then system exception, the first test point is not as detected
To voltage, gate layer door interlock switch, back door gate lock-switch are shorted situation before can not judging.
At this point, control the first relay coil of signal control relay 13.5 is attracted, the second relay coil 33.5 is attracted,
The current direction of safety return circuit becomes shown in Figure 21.If the second test point measures voltage, then preceding gate layer door interlock switch is shorted.Together
When, the first test point detects voltage, then rear gate layer door interlock switch, front door gate lock-switch are shorted, and the second test point is not as
Detect voltage, then rear gate layer door interlock switch, front door gate lock-switch are not shorted all.As electricity is not detected in the second test point
Pressure, then preceding gate layer door interlock switch is not shorted.Meanwhile first test point such as detect voltage, then system exception, the first test point is such as
Voltage is not detected, gate layer door interlock switch, front door gate lock-switch are shorted situation after can not judging.
At this point, control signal controls, the first relay coil 13.5 is not attracted, the second relay coil 33.5 is attracted, safety
The current direction in circuit becomes as shown in figure 22.If the first test point detects voltage, then gate lock-switch in back door is shorted.Together
When, the second test point such as detects voltage, then front door gate lock-switch, rear gate layer door interlock switch are shorted, and the second test point is such as
Voltage is not detected, then front door gate lock-switch, rear gate layer door interlock switch are not shorted all.As electricity is not detected in the first test point
Pressure, then gate lock-switch in back door is not shorted.Meanwhile second test point such as detect voltage, then system exception, the second test point is such as
Voltage is not detected, can not judge that front door gate lock-switch, rear gate layer door interlock switch are shorted situation.
The present invention has been described in detail through specific embodiments, which is only of the invention preferable
Embodiment, the present invention is not limited to embodiments discussed above.The obvious transformation or substitution enlightened based on the present invention
It should also be as being considered in technology scope of the invention.Above specific embodiment is used to disclose best implementation of the invention
Method, so that those skilled in the art can come using numerous embodiments of the invention and a variety of alternatives
Reach the purpose of the present invention.
Claims (10)
1. a kind of elevator safety loop detection device, which is characterized in that including elevator safety loop, the elevator safety loop packet
The first safety detection circuit (10) is included, the first safety detection circuit (10) includes:
First safety switch assembly (11), including the first safety switch combination (11.1) and the second safety switch combination (11.2)；
The first safety switch combination (11.1) combines (11.2) with second safety switch and is connected in series；
First relay circuit (13), first relay circuit (13) includes the first normally opened contact (13.1), second normally opened
Contact (13.2), the first normally-closed contact (13.3), the second normally-closed contact (13.4) are with the first relay coil (13.5), and described
One normally opened contact (13.1) is gone here and there with second normally opened contact (13.2) again after connecting with first safety switch assembly (11)
Connection；First normally-closed contact (13.3) connect with first safety switch assembly (11) after again with first normally-closed contact
(13.3) it connects；
First control signal, the first control signal is by the disconnection or actuation of control the first relay coil (13.5) to control
Make the folding of first and second normally opened contact and the first and second normally-closed contact.
2. elevator safety loop detection device as described in claim 1, which is characterized in that the first safety detection circuit
(10) further include: the first safety detection circuit (10) input terminal and first safety detection circuit (10) output end, described first often
The first end of the first end and first normally-closed contact (13.3) of opening contact (13.1) respectively with first safety detection
Circuit (10) input terminal is connected；The second end and second normally-closed contact (13.4) of second normally opened contact (13.2)
Second end be connected respectively with first safety detection circuit (10) output end.
3. elevator safety loop detection device as described in claim 1, which is characterized in that the first safety detection circuit
(10) further include:
First test point (12), setting first safety switch combination (11.1) and the second safety switch combine (11.2) it
Between；First test point (12) is for detecting voltage.
4. elevator safety loop detection device as described in claim 1, which is characterized in that further include:
Second safety detection circuit (20), the second safety detection circuit (20) include the second safety switch assembly (21),
Including third safety switch combination (21.1) and the 4th safety switch combination (21.2), the third safety switch combines (21.1)
(21.2) are combined with the 4th safety switch to be connected in series；The second safety detection circuit (20) further includes the second relay electricity
Road (23), second relay circuit (23) include that third normally opened contact (23.1), the 4th normally opened contact (23.2), third are normal
Closed contact (23.3), the 4th normally-closed contact (23.4) and the first relay coil (13.5), the third normally opened contact
(23.1) it connects again with the 4th normally opened contact (23.2) after connecting with second safety switch assembly (21), the third
Normally-closed contact (23.3) is connected with the 4th normally-closed contact (23.4) again after connecting with second safety switch assembly (21)；
The second safety detection circuit (20) further includes first control signal, and the first control signal passes through the first relay of control
The disconnection of coil (13.5) is attracted to control the folding of described third and fourth normally opened contact and third and fourth normally-closed contact；Described
Two safety detection circuits (20) and the first safety detection circuit (10) are connected in series to form safety detection electrical combination (50)；
Third safety detection circuit (30), the third safety detection circuit (30) include the 5th normally opened contact (33.1), the 6th
Normally opened contact (33.2), the 5th normally-closed contact (33.3), the 6th normally-closed contact (33.4) and the second relay coil (33.5),
5th normally opened contact (33.1) connect with the safety detection electrical combination (50) after again with the 6th normally opened contact
(33.2) connect, the 5th normally-closed contact (33.3) connect with the safety detection electrical combination (50) after again with the described 6th
Normally-closed contact (33.4) series connection；
Second control signal, the second control signal is by the disconnection or actuation of control the second relay coil (33.5) to control
Make the folding of the five, the six normally opened contact and the five, the six normally-closed contacts.
5. elevator safety loop detection device as claimed in claim 4, which is characterized in that further include the defeated of elevator safety loop
Enter end and output end, the first end of the 5th normally opened contact (33.1) and the first end of the 5th normally-closed contact (33.3)
It is connected respectively with the input terminal of the elevator safety loop；The second end of 6th normally opened contact (33.2) and described
The second end of six normally-closed contacts (33.4) is connected with the output end of elevator safety loop respectively.
6. elevator safety loop detection device as claimed in claim 5, which is characterized in that the third safety detection circuit
(30) further include:
Second test point (22), setting the third safety switch combination (21.1) and the 4th safety switch combine (21.2) it
Between；Second test point (22) is for detecting voltage.
7. the elevator safety loop detection device as described in one of claim 1-6, which is characterized in that first safety open
Closing combination (11.1) is elevator cage door lock-switch.
8. the elevator safety loop detection device as described in one of claim 1-6, which is characterized in that second safety open
Closing combination (11.2) is at least one elevator door lock-switch.
9. the elevator safety loop detection device as described in one of claim 4-6, which is characterized in that first safety open
Closing combination (11.1) is elevator front door gate lock-switch, and the second safety switch combination (11.2) is that elevator back door car door lock is opened
It closes.
10. the elevator safety loop detection device as described in one of claim 4-6, which is characterized in that the third safety
Switch combination (21.1) is gate layer door interlock switch before elevator, and the 4th safety switch combination (21.2) is gate layer door lock after elevator
Switch.
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| CN201910682124.5A CN110407039B (en) | 2019-07-26 | 2019-07-26 | Elevator safety loop detection device |
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| CN201910682124.5A CN110407039B (en) | 2019-07-26 | 2019-07-26 | Elevator safety loop detection device |
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| CN113247727A (en) * | 2021-04-15 | 2021-08-13 | 上海新时达电气股份有限公司 | Elevator door loop fault detection device and detection method thereof |
| CN113942908A (en) * | 2020-07-16 | 2022-01-18 | 奥的斯电梯公司 | Fault location of landing door safety circuit |
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