CN216235464U - Elevator car safety inspection device - Google Patents
Elevator car safety inspection device Download PDFInfo
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- CN216235464U CN216235464U CN202122933431.1U CN202122933431U CN216235464U CN 216235464 U CN216235464 U CN 216235464U CN 202122933431 U CN202122933431 U CN 202122933431U CN 216235464 U CN216235464 U CN 216235464U
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Abstract
The utility model discloses a safety detection device for an elevator car, which comprises an alarm trigger circuit and an alarm mechanism, wherein the alarm trigger circuit is used for triggering and controlling the alarm mechanism; alarm trigger circuit includes the time relay of normally open type and installs the infrared inductive switch who is used for carrying out human sensing in the car, infrared inductive switch's response detects the power supply end and connects power supply, time relay's coil power supply end and car close the door state switch, car maintenance state switch and infrared inductive switch's switch contact end are established ties the back and are connected power supply, and time relay's switch contact end connects in parallel at alarm mechanism's warning trigger end. The utility model can automatically trigger the alarm mechanism of the elevator to alarm when some safety risks possibly exist under the condition that the alarm button is manually triggered by no person, thereby enhancing the safety early warning capability; and the circuit arrangement is simple, the cost is low, the installation is convenient, the original structure and function of the elevator can not be changed, and the popularization is convenient.
Description
Technical Field
The utility model relates to the technical field of elevator cars, in particular to an elevator car safety detection device.
Background
The elevator is an indispensable transportation vehicle in people's life, and it is the symbol of human civilization, also is the sign of modern building grade more and more that present society gets into high intelligent age, and general elevator has button distress function, operates alarm button on the control panel through the car and starts alarm mechanism, and the passenger can ask for help to building person on duty.
However, due to the fact that corresponding alarm measures are lacked inside, the old people and children hardly know how to send out distress signals when the elevator goes wrong, certain damage is caused to people taking the elevator, the old people and children cannot give an alarm in time, meanwhile, the old people and children can also be rescued in time correspondingly, rescue time of people in the elevator is prolonged, and the elevator cannot run.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned disadvantages of the prior art, the present invention provides an elevator car safety detection device that can comprehensively monitor the situation inside an elevator car in real time and send out a distress signal in time.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a safety detection device for an elevator car comprises an alarm trigger circuit and an alarm mechanism which is triggered and controlled by the alarm trigger circuit; alarm trigger circuit includes the time relay of normally open type and installs the infrared inductive switch who is used for carrying out human sensing in the car, infrared inductive switch's response detects the power supply end and connects power supply, time relay's coil power supply end and car close the door state switch, car maintenance state switch and infrared inductive switch's switch contact end are established ties the back and are connected power supply, and time relay's switch contact end connects in parallel at alarm mechanism's warning trigger end.
According to the scheme, the alarm trigger circuit is added in the elevator car, and the alarm mechanism can be started by adopting the existing alarm button and can be triggered and controlled by the alarm trigger circuit; the alarm trigger circuit comprises a normally open time relay and an infrared inductive switch arranged in the car and used for sensing human bodies, wherein the induction detection power supply end of the infrared inductive switch is connected with a power supply, the coil power supply end of the time relay is connected with the car door closing state switch in series, and the car maintenance state switch and the switch contact end of the infrared inductive switch are connected with the power supply in series.
Therefore, if the elevator is not in the maintenance state, the car maintenance state switch is closed and conducted, the car door closing state switch is closed and conducted after the car door is closed, if personnel exist in the car at the moment, the infrared inductive switch senses a human body signal and triggers the switch contact end of the infrared inductive switch to be closed, at the moment, the coil power supply end of the time relay is electrified to start timing set time, as long as the set time of the time relay is reasonably set, for example, the set time of the time relay can be set to exceed the maximum single time operation time of 3-5 minutes from one time operation to the next door opening after the elevator door is closed, if the elevator door is continuously closed and the duration time of the personnel in the car exceeds the set time of the time relay, the problem of the elevator operation is probably explained, and the set time of the time relay is delayed, the switch contact end is triggered to be closed, so that the alarm mechanism executes alarm.
Furthermore, the car door closing state switch is an electric control switch triggered and controlled by an elevator operation controller, and is in an open state when the elevator car door is opened and is in a closed state when the elevator car door is closed.
Furthermore, the car maintenance state switch is an electric control switch triggered and controlled by an elevator operation controller, and is in a closed state when the elevator is in a normal operation state and is in an open state when the elevator enters the car maintenance state.
Furthermore, the alarm trigger circuit also comprises a car lighting state switch which is connected in parallel at two ends of the car door closing state switch.
The design is that under the normal operation state of the elevator, the illuminating lamp in the elevator car is kept in the on-illumination state in the time period before and after the elevator car door is opened and the door opening device, and only when no person exists in the elevator car and the elevator car stops operating for a period of time, the elevator operation controller can control the illuminating lamp to turn off illumination in order to save electricity; the car lighting state switch is connected in parallel at two ends of the car door closing state switch, so that if the lighting lamp in the elevator car is abnormally closed under the condition that the elevator car door is opened (the car door closing state switch is disconnected), the elevator operation controller can switch the car lighting state switch to a closed state; meanwhile, if the elevator is not in the maintenance state, the car maintenance state switch is switched on, and a person in the car triggers the switch contact end of the infrared induction switch to be switched on, the coil power supply end of the time relay is electrified to start timing of set time, if the duration time of the person in the car exceeds the set time of the time relay at the moment, the situation that the person cannot leave the car even though the elevator door is opened due to some reason is shown, the possibility of encountering abnormal conditions exists, and the switch contact end of the time relay is triggered to be switched on when the set time of the time relay is delayed, so that the alarm mechanism executes alarm.
Furthermore, the car illumination state switch is an electric control switch triggered and controlled by the elevator operation controller, and is in an off state when the illumination lamp in the elevator car is turned on for illumination, and is in an on state when the illumination lamp in the elevator car is turned off for illumination.
Further, infrared inductive switch installs the position department that is located the middle part on the car roof in the car, and infrared inductive switch's infrared induction head is downward towards car inner space direction. Design like this for infrared inductive switch covers the scope of elevator car bottom greatly, can better acquire human inductive signal.
Furthermore, the infrared induction switches are distributed and installed on a car top plate or a car side wall plate in the car, and the infrared induction heads of the infrared induction switches face the space direction in the car;
after the switch contact ends of the infrared induction switches are connected in parallel, the switch contact ends are connected in series with the coil power supply end of the time relay, the switch contact end of the car door closing state switch and the switch contact end of the car maintenance state switch.
Design like this, install a plurality of infrared inductive switches on the car roof in the car or on the car lateral wall board separately, and each infrared inductive switch's infrared induction head all towards car inner space direction, more comprehensive covering elevator car space can better acquire human response signal.
Further, still including installing the emergency auxiliary lighting lamp that is used for carrying out auxiliary lighting in the car, the coil power supply end both ends of emergency auxiliary lighting lamp's power supply end time relay.
Design like this, when car illumination status switch normal close, if the light in the car is closed unusually, very dark in the elevator car, therefore, the installation is used for carrying out the emergency auxiliary lighting lamp of auxiliary lighting in the car, and the coil supply end both ends of the supply terminal time relay of emergency auxiliary lighting lamp 5, as long as alarm trigger circuit switches on so that time relay's coil supply end is electrified, time relay gets into and sets for timely preliminary alarm state, emergency auxiliary lighting lamp also can be electrified in the lump and light, for providing auxiliary lighting in the car, avoid too dark in the car, help stabilizing the mood of personnel in the car.
Further, the position department that is located the middle part on the car roof in the car is installed to emergent auxiliary lighting lamp, and the illumination side of emergent auxiliary lighting lamp is down towards car inner space direction.
Design like this for the light in the car is sufficient, avoids stranded in the elevator people in disorder.
Furthermore, a plurality of emergency auxiliary illuminating lamps are arranged on a car top plate or a car side wall plate in the car in a distributed mode, and the illuminating side of each emergency auxiliary illuminating lamp faces the space direction in the car;
and after the power supply ends of the plurality of emergency auxiliary illuminating lamps are connected in parallel, the two ends of the coil power supply end of the time relay are connected in parallel.
Design like this for a plurality of emergent auxiliary lighting lamp connect in parallel the back each other, one can let the light in the car sufficient, and two come to damage as certain emergent auxiliary lighting lamp, do not influence other emergent auxiliary lighting lamp's use.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, under the condition that an alarm button is manually triggered by no person, an alarm trigger circuit senses the actual situation in the elevator car according to the elevator maintenance state situation, the elevator car door closing situation and the infrared inductive switch, and when some safety risks possibly exist, an alarm mechanism of the elevator is automatically triggered to alarm, so that the safety early warning capability is enhanced; the elevator safety early warning system is simple in circuit arrangement, low in cost and convenient to install, the original structure and functions of the elevator cannot be changed, the elevator safety early warning system is convenient to modify and popularize in the existing elevator control system, and the safety early warning performance of the elevator is improved.
Drawings
Fig. 1 is a circuit diagram of an alarm triggering circuit side in one embodiment of an elevator car safety detecting apparatus of the present invention.
Fig. 2 is a circuit diagram of an alarm mechanism side in one embodiment of the elevator car safety detecting apparatus of the present invention.
Fig. 3 is a circuit diagram of a side of an alarm triggering circuit in another embodiment of the elevator car safety detecting apparatus of the present invention.
Fig. 4 is a circuit diagram of a side of an alarm triggering circuit in still another embodiment of the elevator car safety detecting apparatus of the present invention.
In the figure: the emergency car door closing device comprises an infrared induction switch 1, a coil power supply end 21, a switch contact end 22, a car door closing state switch 3, a car lighting state switch 4, an emergency auxiliary illuminating lamp 5, an alarm button 6, an alarm mechanism 7 and a car maintenance state switch 8.
Detailed Description
The utility model will be further explained with reference to the drawings and the embodiments.
Referring to fig. 1 and 2, the elevator car safety detection device comprises an alarm trigger circuit and an alarm mechanism 7 which is triggered and controlled by the alarm trigger circuit; the alarm trigger circuit comprises a normally open time relay and an infrared inductive switch 1 arranged in the car and used for sensing human bodies, wherein the induction detection power supply end of the infrared inductive switch 1 is connected with a power supply, the coil power supply end 21 of the time relay is connected with the car door closing state switch 3, the car maintenance state switch 8 and the switch contact end 22 of the infrared inductive switch 1 in series and then connected with the power supply, and the switch contact end 22 of the time relay is connected with the alarm trigger end of the alarm mechanism 7 in parallel.
According to the scheme, the alarm trigger circuit is additionally arranged in the elevator car, and the alarm mechanism 7 can be started by adopting the existing alarm button and can be triggered and controlled by the alarm trigger circuit; the alarm trigger circuit comprises a normally open time relay and an infrared induction switch 1 installed in the car and used for sensing human bodies, wherein the induction detection power supply end of the infrared induction switch 1 is connected with a power supply, the coil power supply end 21 of the time relay is connected with the car door closing state switch 3 in series, the car maintenance state switch 8 is connected with the switch contact end of the infrared induction switch 1 in series and then connected with the power supply, therefore, when the car door closing state switch 3, the car maintenance state switch 8 and the switch contact of the infrared induction switch 1 are closed and conducted, the coil power supply end 21 of the time relay is electrified, the switch contact end 22 is triggered and closed after the set timing time delay, the switch contact end 22 is connected in parallel with the alarm trigger end of the alarm mechanism 7, and then the alarm trigger end of the alarm mechanism 7 is closed and conducted to execute alarm.
Specifically, the car door closing state switch 3 is an electric control switch triggered and controlled by an elevator operation controller, and the electric control switch can be a relay and is in an open state when an elevator car door is opened and is in a closed state when the elevator car door is closed; the car maintenance state switch 8 is an electric control switch triggered and controlled by an elevator operation controller, and the electric control switch can be a relay, is in a closed state when the elevator is in a normal operation state, and is in an open state when the elevator enters a car maintenance state; these are existing switch components in the existing elevator control circuit.
Therefore, if the elevator is not in the maintenance state, the car maintenance state switch 8 is closed and conducted, the car door closing state switch 3 is closed and conducted after the car door is closed, if personnel exist in the car at the moment, the infrared induction switch 1 can sense a human body signal to trigger the switch contact end of the infrared induction switch 1 to be closed, at the moment, the coil power supply end 21 of the time relay is electrified to start timing of set time, as long as the set time of the time relay is reasonably set, for example, the set time of the time relay can be set to exceed the maximum single operation time from one operation to the next door opening after the car door is closed for 3-5 minutes, so that if the elevator door is continuously closed and the duration time of the personnel in the car exceeds the set time of the time relay, the problem of the elevator operation is probably explained, and the set time of the time relay is delayed, it triggers the closing of its switch contact terminal 22 so that the alarm mechanism 7 performs an alarm.
Preferably, as shown in fig. 3, a car lighting state switch 4 connected in parallel to both ends of the car door closing state switch 3 may be provided in the alarm triggering circuit. Specifically, the car lighting state switch 4 is an electrically controlled switch that is triggered and controlled by the elevator operation controller, and is turned off when the lighting lamp in the elevator car is on for lighting, and is turned on when the lighting lamp in the elevator car is off for lighting.
The design is that under the normal operation state of the elevator, the illuminating lamp in the elevator car is kept in the on-illumination state in the time period before and after the elevator car door is opened and the door opening device, and only when no person exists in the elevator car and the elevator car stops operating for a period of time, the elevator operation controller can control the illuminating lamp to turn off illumination in order to save electricity; the car lighting state switch 4 is connected in parallel at two ends of the car door closing state switch 3, so that if the lighting lamp in the elevator car is abnormally closed under the condition that the elevator car door is opened (the car door closing state switch 3 is disconnected), the elevator operation controller can switch the car lighting state switch 4 to a closed state; meanwhile, if the elevator is not in the maintenance state, the car maintenance state switch 8 is switched on, and someone in the car triggers the switch contact end of the infrared induction switch 1 to be switched on, the coil power supply end 21 of the time relay is powered on to start timing of set time, if the duration time of someone in the car exceeds the set time of the time relay at the moment, the situation shows that the possibility that the person cannot leave the car even though the elevator door is opened due to some reason exists, and the abnormal situation is met, so that the switch contact end 22 is triggered to be switched on when the set time of the time relay is delayed, and the alarm mechanism 7 is enabled to alarm.
In order to make the personnel in the car of sensing that infrared inductive switch 1 can be better, as preferred, infrared inductive switch 1 installs the position department that is located the middle part on the car roof in the car, and infrared inductive switch 1's infrared inductive head is downward towards the space direction in the car. Design like this for infrared induction switch 1 covers the scope of elevator car bottom greatly, can better acquire human response signal.
Or, as another preferred design scheme, a plurality of infrared inductive switches 1 may be arranged on a car roof or a car side wall plate in the car in a distributed manner, and the infrared inductive head of each infrared inductive switch 1 faces the space direction in the car; after the switch contact terminals 22 of the infrared inductive switches 1 are connected in parallel, the infrared inductive switches are connected in series with the coil power supply terminal 21 of the time relay, the switch contact terminal 22 of the car door closing state switch 3 and the switch contact terminal 22 of the car maintenance state switch 8. Design like this, install a plurality of infrared inductive switch 1 on the car roof in the car or on the car lateral wall board separately, and each infrared inductive switch 1's infrared induction head all towards the space direction in the car, more comprehensive covering elevator car space can better acquire human response signal.
Preferably, as shown in fig. 4, an emergency auxiliary illuminating lamp 5 installed in the car for auxiliary illumination may be further designed, and the power supply terminal of the emergency auxiliary illuminating lamp 5 is designed to be connected to both ends of the coil power supply terminal 21 of the time relay, so that the emergency illumination can be provided at the same time of alarming.
Design like this, when 4 normal closings of car illumination status switch, if the light in the car is closed unusually, very dark in the elevator car, therefore, the installation is used for carrying out auxiliary lighting's emergency auxiliary lighting lamp 5 in the car, and the coil supply end 21 both ends of the supply end time relay of emergency auxiliary lighting lamp 5, as long as alarm trigger circuit switches on so that time relay's coil supply end gets electric, time relay gets into and sets for timely preliminary alarm state, emergency auxiliary lighting lamp 5 also can get electric in the lump and light, for providing auxiliary lighting in the car, avoid the interior too dark of car, help stabilizing the mood of personnel in the car.
Preferably, the emergency auxiliary illuminating lamp 5 is installed at a position in the middle on the car roof in the car, and the illuminating side of the emergency auxiliary illuminating lamp 5 faces downward toward the space direction in the car. Design like this for the light in the car is sufficient, avoids stranded in the elevator people in disorder.
Or, as another preferred design, the number of the emergency auxiliary illuminating lamps 5 may be multiple, and the emergency auxiliary illuminating lamps are distributed and installed on a car roof plate or a car side wall plate in the car, and the illuminating side of each emergency auxiliary illuminating lamp 5 faces the space direction in the car; after the power supply ends of the emergency auxiliary illuminating lamps 5 are connected in parallel, the two ends of the coil power supply end 21 of the time relay are connected. Design like this for a plurality of emergent auxiliary lighting lamp 5 connect in parallel each other the back, one can let the light in the car sufficient, two come to damage as certain emergent auxiliary lighting lamp 5, do not influence other emergent auxiliary lighting lamp 5's use.
In conclusion, the utility model can be seen that under the condition that the alarm button is manually triggered by no person, the alarm trigger circuit senses the actual condition in the elevator car according to the maintenance state condition of the elevator, the closing condition of the elevator car door and the combination of the infrared inductive switch, and when some safety risks possibly exist, the alarm mechanism of the elevator is automatically triggered to alarm, so that the safety early warning capability is enhanced; the elevator safety early warning system is simple in circuit arrangement, low in cost and convenient to install, the original structure and functions of the elevator cannot be changed, the elevator safety early warning system is convenient to modify and popularize in the existing elevator control system, and the safety early warning performance of the elevator is improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. The safety detection device for the elevator car is characterized by comprising an alarm trigger circuit and an alarm mechanism (7) which is triggered and controlled by the alarm trigger circuit; alarm trigger circuit includes the time relay of normally open type and installs infrared inductive switch (1) that is used for carrying out human sensing in the car, the power supply is connected to the response detection power supply end of infrared inductive switch (1), power supply is connected after coil power supply end (21) and car door closing state switch (3), car maintenance state switch (8) and the switch contact end of infrared inductive switch (1) are established ties, and time relay's switch contact end (22) connect in parallel at the warning trigger end of alarm mechanism (7).
2. The elevator car safety detecting device according to claim 1, wherein the car door-closing state switch (3) is an electrically controlled switch triggered and controlled by an elevator operation controller, and is in an open state when the elevator car door is opened and in a closed state when the elevator car door is closed.
3. The elevator car safety detecting device according to claim 1, characterized in that the car maintenance state switch (8) is an electrically controlled switch triggered and controlled by an elevator operation controller, and is in a closed state when the elevator is in a normal operation state and is in an open state when the elevator enters the car maintenance state.
4. The elevator car safety detection device according to claim 1, characterized in that the alarm trigger circuit further comprises a car lighting state switch (4) connected in parallel at two ends of the car door closing state switch (3).
5. The elevator car safety detecting device according to claim 4, wherein the car illumination state switch (4) is an electrically controlled switch which is triggered and controlled by the elevator operation controller, and is turned off when the illumination lamp in the elevator car is turned on and is turned on when the illumination lamp in the elevator car is turned off.
6. The elevator car safety detecting device according to claim 1, wherein the infrared inductive switch (1) is installed at a position at the middle on a car ceiling in the car, and an infrared inductive head of the infrared inductive switch (1) faces downward toward a space in the car.
7. The elevator car safety detection device according to claim 1, wherein the infrared induction switches (1) are multiple and are distributed and installed on a car top plate or a car side wall plate in the car, and an infrared induction head of each infrared induction switch (1) faces to the space direction in the car;
after the switch contact ends of the infrared induction switches (1) are connected in parallel, the switch contact ends are connected in series with the coil power supply end of the time relay, the switch contact end of the car door closing state switch (3) and the switch contact end of the car maintenance state switch (8).
8. The elevator car safety detecting device according to claim 1, further comprising an emergency auxiliary illuminating lamp (5) installed in the car for auxiliary illumination, wherein the power supply terminal of the emergency auxiliary illuminating lamp (5) is connected to both ends of the coil power supply terminal (21) of the time relay.
9. The elevator car safety detecting device according to claim 8, wherein the emergency auxiliary illuminating lamp (5) is installed at a position at the middle on a car ceiling in the car, and an illuminating side of the emergency auxiliary illuminating lamp (5) is directed downward toward the space inside the car.
10. The elevator car safety detecting device according to claim 8, wherein the emergency auxiliary illuminating lamps (5) are distributed and installed on a car roof or a car side wall plate in the car, and an illuminating side of each emergency auxiliary illuminating lamp (5) faces a space in the car;
after the power supply ends of the emergency auxiliary illuminating lamps (5) are connected in parallel, the two ends of the coil power supply end (21) of the time relay are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122933431.1U CN216235464U (en) | 2021-11-26 | 2021-11-26 | Elevator car safety inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122933431.1U CN216235464U (en) | 2021-11-26 | 2021-11-26 | Elevator car safety inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216235464U true CN216235464U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122933431.1U Active CN216235464U (en) | 2021-11-26 | 2021-11-26 | Elevator car safety inspection device |
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|---|---|
| CN (1) | CN216235464U (en) |
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2021
- 2021-11-26 CN CN202122933431.1U patent/CN216235464U/en active Active
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