CN218231431U - Elevator door lock bypass system - Google Patents

Abstract

The utility model relates to an elevator technical field discloses an elevator lock bypass system. In the elevator door lock bypass system, a car door bypass device and a landing door bypass device are respectively connected with a machine room safety plate; the door lock safety plates receive state signals of all door lock contacts, and each door lock safety plate sends the state signals to the machine room safety plate through the safety bus; under the condition that the car door bypass device is switched on, the machine room safety plate controls the braking device to brake the elevator when the door lock contact of any layer of door is switched off; under the condition that the landing door bypass device is switched on, the machine room safety plate controls the braking device to brake the elevator when the door lock contact of any car door is switched off; and under the condition that the car door bypass device and the landing door bypass device are both disconnected, the machine room safety plate controls the braking device to brake the elevator when any door lock contact is disconnected. Compare traditional lock return circuit and bypass device and can effectively simplify the structure, can make the maintainer convenient and switch the elevator to the bypass operation safely.

Description

Elevator door lock bypass system

Technical Field

The utility model belongs to the technical field of the elevator technique and specifically relates to an elevator lock bypass system is related to.

Background

In modern life developing at a high speed, the use of elevators has become more and more popular, and the elevators have become indispensable tools for people. With the wide application of elevators, more and more people are invested in the research of elevator related technologies.

In elevators there are a large number of door lock contacts (also called "door lock switches") which refer in particular to the door lock contacts of the elevator landing doors at each landing and to the door lock contacts of the elevator car. In an elevator, a door lock loop is provided which connects door lock contacts distributed at various positions of the elevator in series, and is used for ensuring that the elevator can normally run under the condition that all the door lock contacts are closed (namely all landing doors and car doors are closed). The on-off of the door lock loop directly controls whether the elevator runs or not. In addition, there is a bypass device in the elevator, which bypass device is generally used to be activated when the door lock cannot be closed and the elevator still has to be run to a safe position, so that the elevator can be in a bypass run state and run to a safe position.

However, the lock loop and bypass device is complicated in structure, and the complexity of debugging and installation is high for technicians. In addition, safety issues may still occur when an elevator door lock is abnormal.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an elevator door lock bypass system for retrench the structure of lock return circuit and bypass arrangement in the elevator, make the maintainer switch the elevator to the bypass operation conveniently and safely.

In order to solve the above problem, an embodiment of the utility model provides an elevator lock bypass system, include: the system comprises a braking device, a car door bypass device, a landing door bypass device, at least one door lock safety board and a machine room safety board which are connected through a safety bus; the car door bypass device and the landing door bypass device are respectively connected with the machine room safety plate; the door lock safety boards receive state signals of all door lock contacts, and each door lock safety board sends the state signals to the machine room safety boards through the safety buses; under the condition that the car door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any layer of door is switched off; under the condition that the landing door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any car door is switched off; and under the condition that the car door bypass device and the landing door bypass device are disconnected, the machine room safety board controls the braking device to brake the elevator when any door lock contact is disconnected.

The utility model provides an elevator lock bypass system includes: the safety device comprises a braking device, a car door bypass device, a landing door bypass device, at least one door lock safety board and a machine room safety board which are connected through a safety bus. The door lock safety plates receive state signals of all door lock contacts, and each door lock safety plate sends the state signals to the machine room safety plates through the safety buses. Under the condition that the car door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any layer of door is switched off; and under the condition that the landing door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when the door lock contact of any car door is switched off. And under the condition that the car door bypass device and the landing door bypass device are both disconnected, the machine room safety board controls the braking device to brake the elevator when any one door lock contact is disconnected. Utilize elevator lock bypass device to make elevator maintenance personal can be convenient and switch the elevator to the bypass operation safely, and then can conveniently carry out the maintenance of elevator. Furthermore, the utility model provides an elevator lock bypass system compares traditional lock return circuit and bypass device, has effectively retrencied the structure to can reduce the complexity that technical staff debugged the installation.

In addition, the machine room control board comprises a control chip, a first safety relay and a second safety relay; when the car door bypass device is detected to be switched on, the control chip controls the first safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the car door bypass device is switched on, the control chip controls the first safety relay to be closed; when the landing door bypass device is detected to be switched on, the control chip controls the second safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the landing door bypass device is switched on, the control chip controls the second safety relay to be closed. In this embodiment, the door bypass device is turned on when the door is open, and the first safety relay is closed when the elevator is instructed to operate, thereby enabling the elevator to perform bypass operation.

In addition, the elevator door lock bypass system also comprises an indicator light and a buzzer; the indicator light and the buzzer operate when the car door bypass device or the landing door bypass device is connected. The indicating lamp and the buzzer are used for reminding the elevator to be in a bypass running state at present, and safety accidents can be avoided.

In addition, the door lock safety plate comprises a car roof safety plate for receiving a state signal of a door lock contact of the car door and a landing door safety plate for receiving a state signal of a door lock contact of the landing door; the car top safety plate is arranged on the car top and comprises two first interfaces; each first interface respectively receives a state signal of a door lock contact of a front car door and a state signal of a door lock contact of a rear car door; each landing door safety plate is arranged at different landings, each landing door safety plate is arranged at each landing, and each landing door safety plate comprises two second interfaces; and each second interface respectively receives a state signal of a door lock contact of a front layer door of a landing where the landing door safety plate is located and a state signal of a door lock contact of a rear layer door of the landing where the landing door safety plate is located.

In addition, each door lock safety board sends the state signal to the machine room safety board through the same safety bus; or the safety bus comprises the first safety bus and the second safety bus, the car top safety plate sends a state signal of a door lock contact of the car door to the machine room safety plate through the first safety bus, and the landing door safety plate sends a state signal of the door lock contact of the landing door to the machine room safety plate through the second safety bus. And each door lock safety board sends the state signal to the machine room safety board through the same safety bus, so that cables required by the safety bus can be saved, and the cost required by an elevator door lock detection system is reduced.

In addition, the door lock safety plate comprises a control chip and an interface; the interface receives a state signal of the door lock contact, and comprises a state detection module which converts the voltage of the door lock contact corresponding to the interface into a state signal of the door lock contact and outputs the state signal; and when detecting that any state signal output by the corresponding interface is abnormal or the state signals are different, the control chip sends a signal representing the abnormal state of the door lock contact to the machine room safety board through the safety bus. Utilize the state detection module can conveniently convert the voltage signal of the lock contact that the interface received into the state signal of lock contact, conveniently acquire the signal of being convenient for transmit more at the safety bus.

In addition, the machine room safety plate is connected with a safety circuit of the elevator, and the machine room safety plate controls the braking device to brake the elevator when the safety circuit is disconnected. In an embodiment, conventional safety circuits in elevators can also be connected to the machine room safety plate.

In addition, the status signal of the door lock contact includes identification information of the door lock contact. Because the status signal of the door lock contact comprises the identification information of the door lock contact, the machine room safety plate can be directly positioned to the abnormal door lock contact when receiving the abnormal status signal.

In addition, the door-lock safety plate and the machine room safety plate are both based on the application PESSRAL of the elevator safety-related programmable electronic system.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic configuration diagram of a conventional door lock circuit and bypass device in an elevator according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an elevator door lock bypass system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a machine room safety plate according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an elevator door lock bypass system according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following describes each embodiment of the present invention in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

An embodiment of the utility model relates to an elevator lock bypass system.

In this embodiment, the elevator door lock bypass system includes: the system comprises a braking device, a car door bypass device, a landing door bypass device, at least one door lock safety board and a machine room safety board which are connected through a safety bus; the car door bypass device and the landing door bypass device are respectively connected with the machine room safety plate; the door lock safety plates receive state signals of all door lock contacts, and each door lock safety plate sends the state signals to the machine room safety plates through the safety buses; under the condition that the car door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any layer of door is switched off; under the condition that the landing door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any car door is switched off; and under the condition that the car door bypass device and the landing door bypass device are disconnected, the machine room safety board controls the braking device to brake the elevator when any door lock contact is disconnected.

A conventional door lock circuit and bypass device in an elevator may refer to a schematic structure of the door lock circuit and bypass device as shown in fig. 1. As can be seen from fig. 1, in the door lock circuit, the door lock switches (i.e. the door lock contacts) are connected in series and, after being connected in series with the safety circuit in the elevator, jointly control the braking device of the elevator. It will be understood that in the figures all switches are shown in a normal state, i.e. when all switches are closed, the elevator is in a normal operating state. If any door lock contact in the loop is disconnected, namely the door lock contact is in an abnormal state, the braking device receives the abnormal signal and then brakes the elevator.

Door bypass devices in elevators are typically activated when the doors in the elevator are unable to close. With continued reference to fig. 1, after the car door bypass device is enabled, the door lock contacts of the car door are shorted and the door lock loop is closed. It will be appreciated that at this point the doors cannot be closed and the elevator is not in braking mode, but rather in bypass mode. The car door bypass device is started, so that the elevator can continuously run under the condition that the car door cannot be closed, and the car can run to a certain landing so as to enable the elevator to enter a safe state.

Landing door bypass devices in elevators are typically activated when the landing doors in the elevator cannot be closed. The operation principle of the elevator after the landing door bypass device is started is the same as the technical details, and the description is omitted for reducing the repetition.

In the installation and maintenance process of an elevator, a situation that one or more door locks of the elevator are short-circuited may exist, and if the situation is not detected in time, the elevator is in fault operation, so that serious safety accidents can be caused. The traditional door lock loop is difficult to locate a specific door lock when the door lock is short-circuited, and a maintenance worker needs to check faults one by one, and the fault locating mode also has certain dangerousness. In addition, traditional lock return circuit and bypass arrangement structure are comparatively complicated, and the technical staff is debugged the installation degree of difficulty and is great.

The details of the implementation of the elevator door lock bypass system in this embodiment will be described in detail below, and the following description is only for the convenience of understanding the details of the implementation of this embodiment and is not necessary to implement this embodiment. The specific structure of the elevator door lock bypass system is shown in fig. 2, and can comprise the following components: the system comprises a braking device 201, a car door bypass device 202, a landing door bypass device 203, at least one door lock safety board 205 and a machine room safety board 206 which are connected through a safety bus 204;

as can be seen from fig. 2, the car door bypass device 202 and the landing door bypass device 203 are respectively connected to the machine room security board 206; the door lock safety boards 205 receive status signals of all door lock contacts, and each door lock safety board 205 sends the status signal to the machine room safety board 206 through the safety bus 204;

when the car door bypass device 202 is turned on, the machine room safety board 206 controls the braking device 201 to brake the elevator when the door lock contact of any floor door is turned off. It should be noted that the car door bypass device is generally turned on manually when the car door cannot be closed, and at this time, the status signal of the door lock contact of the car door is abnormal, but is shielded by the machine room security panel that receives the abnormal status signal. The machine room safety board controls the braking device only according to the state signal of the door lock contact of the landing door.

When the landing door bypass device 203 is turned on, the machine room safety board 206 controls the braking device 201 to brake the elevator when the door lock contact of any one of the car doors is turned off.

When the car door bypass device 202 and the landing door bypass device 203 are both disconnected, the machine room safety board 206 controls the braking device 201 to brake the elevator when any door lock contact is disconnected. The elevator can be guaranteed to stop running when any landing door or car door is opened, and the running safety of the elevator is guaranteed.

The machine room control board comprises a control chip, a first safety relay and a second safety relay; when the car door bypass device is detected to be switched on, the control chip controls the first safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the car door bypass device is switched on, the control chip controls the first safety relay to be closed. The car door bypass device is generally switched on artificially when the car door cannot be closed, and the control chip detects that the switching on of the car door bypass device indicates that the state of the car door is abnormal, so that the control chip controls the first safety relay reflecting the state information of the car door to be switched off. At the moment, if an operator presses an operation button to try to enable the elevator to go upwards or downwards, and the control chip detects that the elevator is instructed to operate, the first safety relay is controlled to be closed, so that the elevator can shield the abnormal state of the car door, and bypass operation is performed according to the instruction of the operator.

When the landing door bypass device is detected to be switched on, the control chip controls the second safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the landing door bypass device is switched on, the control chip controls the second safety relay to be closed. The landing door bypass device is generally manually switched on when the landing door cannot be closed, and the control chip detects that the landing door bypass device is switched on to indicate that the landing door is abnormal in state, so that the control chip controls the second safety relay reflecting the landing door state information to be switched off. At the moment, if an operator presses an operation button to try to enable the elevator to go upwards or downwards, and the control chip detects that the elevator is instructed to operate, the second safety relay is controlled to be closed, so that the elevator can shield the abnormal state of the landing door, and bypass operation is performed according to the instruction of the operator. The machine room safety board including the first safety relay and the second safety relay referred to herein may refer to fig. 3. It should be noted that the car door bypass device and the landing door bypass device may be switches or safety relays as shown in fig. 3, and the embodiment is not particularly limited.

It is worth mentioning that the status signal of the door lock contact comprises identification information of said door lock contact. In one example, for a landing door on the first floor in an elevator, the status signal of the corresponding door lock contact includes identification information of the landing door, which may be specifically HD1. The state signal of lock contact includes the identification information of lock contact can make the computer lab safety plate directly fix a position unusual lock when receiving unusual state information, and the maintenance personal of being convenient for in time makes the lock reply normal condition to avoid the lock by the short circuit and the incident that causes.

It is worth mentioning that the door lock safety plate may include a control chip and an interface; the interface receives a state signal of the door lock contact, the interface comprises a state detection module, and the state detection module converts the voltage of the door lock contact corresponding to the interface into a state signal of the door lock contact and outputs the state signal; and when detecting that any state signal output by the corresponding interface is abnormal or the state signals are different, the control chip sends a signal representing the abnormal state of the door lock contact to the machine room safety board through the safety bus. Utilize the state detection module can conveniently convert the voltage signal of the lock contact that the interface received into the state signal of lock contact, conveniently acquire the signal of being convenient for transmit more at the safety bus.

In one example, the door lock safety plate may include a ceiling safety plate receiving a status signal of a door lock contact of the car door, and a landing door safety plate receiving a status signal of a door lock contact of the landing door; the car top safety plate is arranged on the car top and comprises two first interfaces; each first interface respectively receives a state signal of a door lock contact of a front car door (refer to a CD shown in figure 2) and a state signal of a door lock contact of a rear car door (refer to an RCD shown in figure 2); each landing door safety plate is arranged at different landings, each landing door safety plate is arranged at each landing, and each landing door safety plate comprises two second interfaces; each second interface respectively receives a state signal of a door lock contact of a front layer door (can refer to HD shown in figure 2) of a landing where the landing door safety plate is located and a state signal of a door lock contact of a rear layer door (can refer to RHD shown in figure 2) of the landing where the landing door safety plate is located.

It should be noted that, in the present embodiment, as can be seen from fig. 2, each door lock safety board sends the status signal to the machine room safety board through the same safety bus. And the door lock safety boards send the state signals to the machine room safety board through the same safety bus, so that cables required by the safety bus can be saved, and the cost required by an elevator door lock bypass system is reduced.

It should be noted that, in another example, the safety bus may include the first safety bus and the second safety bus, the car roof safety board sends a status signal of the door lock contact of the car door to the machine room safety board through the first safety bus, and the landing door safety board sends a status signal of the door lock contact of the landing door to the machine room safety board through the second safety bus. Fig. 4 can be referred to for a schematic structural diagram of the car roof safety plate and the landing door safety plate sending status signals to the machine room safety plate through different safety buses.

It is worth mentioning that in order to further improve the safety of the elevator in the bypass operation state and remind the elevator maintenance personnel that the elevator is in the bypass operation state, the elevator door lock bypass system can also comprise an indicator light and a buzzer; the indicator light and the buzzer run when the car door bypass device or the landing door bypass device is switched on.

It is worth mentioning that the machine room safety plate can also be connected to the safety circuit of the elevator (see fig. 4), which machine room safety plate controls the braking device to brake the elevator when the safety circuit is disconnected. It will be understood that the door lock contacts and the bypass device are only part of the factors controlling whether the elevator is operating, and that other safety factors, including safety circuits and other system errors, can also be connected to the machine room safety board for controlling the operation or braking of the elevator.

It is furthermore worth mentioning that in this embodiment the door lock safety plate and the machine room safety plate may both be based on the application PESSRAL of the programmable electronic system related to elevator safety. Specifically, the door lock safety plate and the machine room safety plate may be respectively constituted by a printed circuit board and an electronic component integrated to the printed circuit board.

The elevator door lock bypass system provided by the embodiment comprises: the safety device comprises a braking device, a car door bypass device, a landing door bypass device, at least one door lock safety plate and a machine room safety plate which are connected through a safety bus. The door lock safety plates receive state signals of all door lock contacts, and each door lock safety plate sends the state signals to the machine room safety plates through the safety buses. Under the condition that the car door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any layer of door is switched off; and under the condition that the landing door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when the door lock contact of any car door is switched off. And under the condition that the car door bypass device and the landing door bypass device are disconnected, the machine room safety board controls the braking device to brake the elevator when any door lock contact is disconnected. Utilize elevator lock bypass device to make elevator maintenance personal can be convenient and switch the elevator to the bypass operation safely, and then can conveniently carry out the maintenance of elevator. Furthermore, the utility model provides an elevator lock bypass system compares traditional lock return circuit and bypass device, has effectively retrencied the structure to can reduce the complexity that technical staff debugged the installation.

It should be noted that, the modules involved in the above embodiments of the present invention are logic modules, and in practical applications, one logic unit may be one physical unit, may also be a part of one physical unit, and may also be implemented by a combination of a plurality of physical units. In addition, in order to highlight the innovative part of the present invention, the elements that are not so closely related to the solution of the technical problem proposed by the present invention are not introduced in the present embodiment, but this does not indicate that there are no other elements in the present embodiment.

The above-described embodiments are provided to enable persons skilled in the art to make and use the invention, and many modifications and variations may be made to the above-described embodiments by persons skilled in the art without departing from the inventive concept of the present application, so that the scope of the invention is not limited by the above-described embodiments, but should be accorded the widest scope of the inventive features set forth in the claims.

Claims (9)

1. An elevator door lock bypass system, comprising: the system comprises a braking device, a car door bypass device, a landing door bypass device, at least one door lock safety board and a machine room safety board which are connected through a safety bus;

the car door bypass device and the landing door bypass device are respectively connected with the machine room safety plate; the door lock safety plates receive state signals of all door lock contacts, and each door lock safety plate sends the state signals to the machine room safety plates through the safety buses;

under the condition that the car door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any layer of door is switched off; under the condition that the landing door bypass device is switched on, the machine room safety board controls the braking device to brake the elevator when a door lock contact of any car door is switched off; and under the condition that the car door bypass device and the landing door bypass device are disconnected, the machine room safety board controls the braking device to brake the elevator when any door lock contact is disconnected.

2. The elevator door lock bypass system according to claim 1, wherein the machine room safety board includes a control chip, a first safety relay and a second safety relay;

when the car door bypass device is detected to be switched on, the control chip controls the first safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the car door bypass device is switched on, the control chip controls the first safety relay to be closed;

when the landing door bypass device is detected to be switched on, the control chip controls the second safety relay to be switched off; when the elevator is detected to be instructed to operate under the condition that the landing door bypass device is switched on, the control chip controls the second safety relay to be closed.

3. The elevator door lock bypass system according to claim 1, further comprising an indicator light and a buzzer; the indicator light and the buzzer operate when the car door bypass device or the landing door bypass device is connected.

4. The elevator door lock bypass system according to claim 1, wherein the door lock safety plate comprises a ceiling safety plate that receives a status signal of a door lock contact of the car door, and a landing door safety plate that receives a status signal of a door lock contact of the landing door;

the car top safety plate is arranged on the car top and comprises two first interfaces; each first interface respectively receives a state signal of a door lock contact of a front car door and a state signal of a door lock contact of a rear car door;

each landing door safety plate is arranged at different landings, each landing door safety plate is arranged at each landing, and each landing door safety plate comprises two second interfaces; and each second interface respectively receives a state signal of a door lock contact of a front layer door of a landing where the landing door safety plate is located and a state signal of a door lock contact of a rear layer door of the landing where the landing door safety plate is located.

5. The elevator door lock bypass system of claim 4, wherein each of the door lock safety boards sends the status signal to the machine room safety board over the same safety bus;

or the safety bus comprises a first safety bus and a second safety bus, the car top safety plate sends a state signal of a door lock contact of the car door to the machine room safety plate through the first safety bus, and the landing door safety plate sends a state signal of the door lock contact of the landing door to the machine room safety plate through the second safety bus.

6. The elevator door lock bypass system of claim 1, wherein the door lock security plate comprises a control chip and an interface;

the interface receives a state signal of the door lock contact, the interface comprises a state detection module, and the state detection module converts the voltage of the door lock contact corresponding to the interface into a state signal of the door lock contact and outputs the state signal;

and when detecting that any state signal output by the corresponding interface is abnormal or the state signals are different, the control chip sends a signal representing the abnormal state of the door lock contact to the machine room safety board through the safety bus.

7. The elevator door lock bypass system according to claim 1, characterized in that the machine room safety board is connected with the safety circuit of the elevator, the machine room safety board controlling the braking device to brake the elevator when the safety circuit is disconnected.

8. The elevator door lock bypass system according to any of claims 1 to 7, wherein the status signal of the door lock contact includes identification information of the door lock contact.

9. The elevator door lock bypass system according to any of claims 1 to 7, characterized in that the door lock safety plate and the machine room safety plate are each based on the application of a programmable electronic system related to elevator safety, PESSRAL.

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