Elevator brake failure protection method, device, equipment and storage medium

Abstract

The application discloses an elevator brake failure protection method, an elevator brake failure protection device, an elevator brake failure protection equipment and a storage medium. The method comprises the following steps: detecting the working state of the brake of the elevator; when the working state is failure, controlling the elevator to run to a leveling position; controlling an early door panel bypass door lock switch, the early door panel feeds back a door closing signal based on the bypass state of the door lock switch; when the door closing signal is a valid door closing signal, controlling the elevator to maintain the leveling and perform a door opening operation. The application aims to realize brake failure protection and improve the elevator riding experience of passengers.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to elevator brake failure protection methods, elevator brake failure protection devices, elevator brake failure protection equipment, and storage media. Background Technology

[0002] With the increasing prevalence of elevators, their safety has become a growing concern. Among the safety features, the elevator brake, which provides braking force to keep the car stationary when the elevator stops, is a crucial device for ensuring safe operation. However, brake failure is a common occurrence during long-term elevator use.

[0003] Currently, when a brake failure is detected in an elevator, the elevator will directly move to a safe area and enter a safe state. This can trap passengers inside and cause panic due to the elevator's abnormal operation. Therefore, the current elevator brake protection method results in a poor passenger experience. Summary of the Invention

[0004] The main objective of this invention is to provide an elevator brake failure protection method, an elevator brake failure protection device, an elevator brake failure protection equipment, and a storage medium, aiming to improve the passenger riding experience while achieving brake failure protection.

[0005] To achieve the above objectives, the present invention provides a method for elevator brake failure protection, the method comprising:

[0006] Check the working status of the elevator's brake;

[0007] When the working state is in failure, control the elevator to run to the level position;

[0008] Control the bypass door lock switch of the early opening panel, and the early opening panel feeds back a door sealing signal based on the bypass status of the door lock switch;

[0009] When the door sealing signal is a valid door sealing signal, the elevator is controlled to maintain leveling and perform door opening operation.

[0010] Optionally, the step of controlling the elevator to move to the floor level includes:

[0011] When the elevator is within the door zone, identify whether the elevator has reached the leveling position;

[0012] When the elevator has reached the level position, the step of controlling the pre-opening door panel bypass door lock switch is executed;

[0013] If the elevator does not reach the leveling position, control the elevator to perform a re-leveling operation and return to the step of identifying whether the elevator has reached the leveling position.

[0014] Optionally, the step of controlling the door panel to bypass the door lock switch in advance includes:

[0015] Send a door-sealing command to the pre-opening door panel, and bypass the door lock switch when the pre-opening door panel receives the door zone signal.

[0016] Optionally, the step of controlling the elevator to maintain leveling and perform door opening operation when the door sealing signal is a valid door sealing signal includes:

[0017] When the door sealing signal is a valid door sealing signal, the control operation contactor closes and controls the elevator drive host to continuously output torque in order to control the elevator to maintain leveling and perform door opening operation.

[0018] Optionally, after the step of controlling the elevator to maintain leveling and perform the door opening operation when the door sealing signal is a valid door sealing signal, the method further includes:

[0019] When the door opening operation meets the preset conditions, the elevator is controlled to perform the door closing operation;

[0020] The elevator is controlled to keep the car door closed and to move to a safe area.

[0021] Optionally, the preset conditions include no input door opening command detected within a preset time period or no obstacle detected at the elevator entrance or exit within a preset time period.

[0022] Optionally, the safe zone includes terminal stations located at both ends of the elevator shaft, and the step of controlling the elevator to run to the safe zone includes:

[0023] When the elevator is currently located at the terminal station, control the elevator to perform a stop operation and output a fault prompt message;

[0024] When the elevator is currently located outside the terminal station, control the elevator to move to the terminal station along the light load direction, and perform the stopping operation when the elevator arrives at the terminal station, and output a fault prompt message.

[0025] Furthermore, to achieve the above objectives, this application also proposes an elevator brake failure protection device, which includes:

[0026] The detection module is used to detect the working status of the elevator's brake.

[0027] The leveling control module is used to control the elevator to run to the leveling position when the working state is in failure.

[0028] The bypass control module is used to control the bypass door lock switch of the early door opening panel, and the early door opening panel feeds back a door sealing signal based on the bypass status of the door lock switch;

[0029] The door opening control module is used to control the elevator to maintain leveling and perform door opening operation when the door closing signal is a valid door closing signal.

[0030] In addition, to achieve the above objectives, this application also proposes an elevator brake failure protection device, the device comprising: a memory, a processor, and an elevator brake failure protection program stored in the memory and executable on the processor, the elevator brake failure protection program being configured to implement the steps of the elevator brake failure protection method as described in any of the preceding claims.

[0031] In addition, to achieve the above objectives, this application also proposes a storage medium storing an elevator brake failure protection program, which, when executed by a processor, implements the steps of the elevator brake failure protection method as described in any of the preceding claims.

[0032] This invention proposes an elevator brake failure protection method. When the elevator brake fails, the method first controls the elevator to the leveling position, then bypasses the door lock switch by opening the door panel in advance and feeds back a door-sealing signal based on the bypass status of the door lock switch. When the door-sealing signal is valid, the elevator is controlled to maintain leveling and perform the door opening operation, allowing passengers inside the elevator to leave during the door opening process. In this way, the elevator's advance door opening panel ensures the normal power supply to the drive unit, which helps to ensure that the opening and closing of the elevator door does not affect the operation of the drive unit. The elevator door can open during the elevator's movement to the leveling position, allowing passengers to leave the elevator. This effectively avoids panic or injury to passengers trapped in the elevator due to abnormal elevator operation, thus effectively achieving brake failure protection while improving the passenger riding experience. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the circuit structure involved in the operation of an embodiment of the elevator brake failure protection device of the present invention;

[0034] Figure 2 This is a schematic diagram of the communication hardware structure involved in the operation of an embodiment of the elevator brake failure protection device of the present invention;

[0035] Figure 3 This is a flowchart illustrating an embodiment of the elevator brake failure protection method of the present invention;

[0036] Figure 4 This is a flowchart illustrating another embodiment of the elevator brake failure protection method of the present invention;

[0037] Figure 5This is a flowchart illustrating another embodiment of the elevator brake failure protection method of the present invention;

[0038] Figure 6 This is a flowchart illustrating another embodiment of the elevator brake failure protection method of the present invention;

[0039] Figure 7 This is a flowchart illustrating another embodiment of the elevator brake failure protection method of the present invention;

[0040] Figure 8 This is a schematic diagram of the functional module structure of an embodiment of the elevator brake failure protection device of the present invention.

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] This invention provides an elevator brake failure protection device.

[0044] In this embodiment of the invention, reference is made to Figure 1 The elevator brake failure protection device includes a safety circuit 2 and an early door opening panel 3.

[0045] Specifically, safety circuit 2 includes a brake 22, an elevator door lock 23, a running contactor 24, a drive unit 25, and a brake contactor 26 connected in series. The drive unit 25, specifically a traction machine, is used to drive the elevator car upwards or downwards. The brake 22 provides braking force to keep the car stationary when the elevator stops.

[0046] The elevator doors specifically include the car door and the landing door. Door lock 23 includes a door lock switch, which in turn includes a car door lock switch and a landing door lock switch. The door lock switch is open when the elevator door is open and closed when the elevator door is closed. The door lock switch acts as a safety switch in the safety circuit. When the door lock switch is open, safety circuit 2 is disconnected, thereby de-energizing the drive unit 25 and the brake 22, ultimately causing the elevator to stop. When the door lock switch is closed, safety circuit 2 is energized, thereby energizing the drive unit 25 and the brake 22, allowing the elevator to operate normally.

[0047] When the equipment issues a door-closing command, the pre-opening door panel 3 executes the door-closing command by short-circuiting the door lock switch. Specifically, when the brake 22 fails, the elevator performs a door-opening operation to release passengers at the leveling position. During this process, the door lock switch is open. The pre-opening door panel receives the door zone signal and short-circuits the door lock switch. The running contactor 24 closes, energizing the drive host 25. The drive host 25 outputs torque to drive the elevator to stably maintain the leveling position and perform the door-opening operation. At this time, the people inside the elevator can leave the elevator. In addition, if the elevator door closes before reaching the leveling position or during operation, the door lock switch closes. If the pre-opening door panel 3 does not receive the door zone signal, it stops short-circuiting the door lock switch. Based on the door-closing command, the pre-opening door panel 3 performs a door-closing operation by short-circuiting the door lock switch when it receives the door zone signal. If the short-circuiting is successful, a valid door-closing signal is fed back; if the short-circuiting is unsuccessful, an invalid door-closing signal is fed back.

[0048] In this embodiment of the invention, reference is made to Figure 2 The elevator brake failure protection device includes: a processor 1001, such as a CPU; a network interface 1004; a user interface 1003; a memory 1005; and a communication bus 1002. The communication bus 1002 is used to establish communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0049] Those skilled in the art will understand that Figure 2 The device structure shown does not constitute a limitation on the device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0050] like Figure 2 As shown, the network interface 1004 is mainly used to connect to the backend server and communicate with the backend server; the user interface 1003 is mainly used to connect to the client (user terminal) and communicate with the client; and the processor 1001 can be used to call the relevant steps of the elevator brake failure protection method in the following embodiments in the memory 1005.

[0051] This invention also provides a method for protecting elevator brakes in case of failure, applicable to elevators.

[0052] Reference Figure 3This application presents an embodiment of an elevator brake failure protection method. In this embodiment, the elevator brake failure protection method includes:

[0053] Step S10: Detect the working status of the elevator's brake;

[0054] The operating status specifically includes failure or normal operation. A brake operating in normal operation means it provides braking force to keep the car stationary when the elevator is stopped. A brake operating in failure means it cannot provide braking force to keep the car stationary when the elevator is stopped.

[0055] Specifically, the operating status of the brake can be monitored in real time during elevator operation. Alternatively, the operating status of the brake can be monitored in real time when the elevator doors are closed. Or, the operating status of the brake can be monitored when the elevator reaches a preset area (such as a door zone within the building or other areas within the building). Or, the operating status of the brake can be monitored when the elevator speed is lower than a set speed. Or, the operating status of the brake can be monitored when the rate of change of the elevator speed exceeds a preset threshold, and so on.

[0056] Step S20: When the working state is in failure, control the elevator to run to the level position;

[0057] When the elevator's brake fails, if the elevator is at the landing level, it can be controlled to maintain its current position; if the elevator is at a position other than the landing level, it can be controlled to move to the landing level.

[0058] When the brake fails, the car is moved or stationary by the torque output by the drive unit.

[0059] Step S30: Control the bypass door lock switch of the early door opening panel, and the early door opening panel feeds back a door sealing signal based on the bypass status of the door lock switch;

[0060] When the bypass door lock switch is opened in advance, the power supply to the drive unit will not be affected regardless of whether the door lock switch is open or closed. The drive unit can maintain power supply to output torque to control the movement or stop of the elevator.

[0061] The door-sealing signal fed back by the pre-opening door panel indicates whether the door lock switch has been bypassed. The door-sealing signal includes a valid door-sealing signal or an invalid door-sealing signal.

[0062] The pre-opening door panel includes a door sealing path, which is connected in parallel with the door lock switch in the safety circuit. When the feedback door sealing signal is a valid door sealing signal, it indicates that the door sealing path is open and the door lock switch is bypassed; when the feedback door sealing signal is an invalid door sealing signal, it indicates that the door sealing path is not open and the door lock switch is not bypassed.

[0063] Step S40: When the door sealing signal is a valid door sealing signal, control the elevator to maintain leveling and perform door opening operation.

[0064] When the door-closing signal is valid, the control drive unit outputs a first holding torque to maintain the elevator at the landing position. During this process, the car door and landing door can be opened to allow passengers to exit the elevator. Specifically, the first holding torque is the torque required to bring the elevator to a standstill.

[0065] This invention proposes an elevator brake failure protection method. When the elevator brake fails, the method first controls the elevator to a level position, then opens the door panel in advance to bypass the door lock switch and feeds back a door-sealing signal based on the bypass status of the door lock switch. When the door-sealing signal is valid, the elevator is controlled to maintain level and perform a door-opening operation, allowing passengers inside the elevator to leave during the door opening process. In this way, the elevator's advance door opening panel ensures the normal power supply to the drive unit, which helps ensure that the opening and closing of the elevator door does not affect the operation of the drive unit. The elevator door can open during the elevator's movement to the level position, allowing passengers to leave the elevator. This effectively avoids panic or injury to passengers trapped in the elevator due to abnormal elevator operation, thus effectively achieving brake failure protection while improving the passenger riding experience.

[0066] Furthermore, based on the above embodiments, another embodiment of the elevator brake failure protection method of this application is proposed. In this embodiment, reference is made to... Figure 4 The step of controlling the elevator to move to the floor level includes:

[0067] Step S21: When the elevator is within the door zone, identify whether the elevator has reached the leveling position;

[0068] Sensors can be installed in the door zone of the floor where the elevator is located and on the elevator car. The system uses sensor signals to determine whether the elevator is within the door zone. Specifically, sensors can be installed at the upper and lower edges of the door zone, and the system uses data from these sensors to determine whether the elevator has reached the floor level.

[0069] Specifically, the elevator is determined to be within the door zone when at least one sensor on the door zone detects a signal corresponding to the car; the elevator is determined to be outside the door zone when none of the sensors on the door zone detect a signal corresponding to the car. The elevator is determined to have reached the leveling position when both the sensors located at the upper and lower edges of the door zone detect a signal corresponding to the car; the elevator is determined to have not reached the leveling position when at least one of the sensors located at the upper and lower edges of the door zone fails to detect a signal corresponding to the car.

[0070] Step S22: When the elevator has reached the level position, execute the step of controlling the bypass door lock switch of the door panel to open in advance;

[0071] Step S23: When the elevator has not reached the leveling position, control the elevator to perform a re-leveling operation and return to the step of identifying whether the elevator has reached the leveling position.

[0072] During the elevator's re-leveling operation, the drive unit outputs a second holding torque, which is specifically the torque that causes the elevator to move at low speed and adjust to the leveling position.

[0073] In this embodiment, the elevator is kept at the level position by means of the above method, and the elevator door will only open when the elevator reaches the level position, which can effectively improve the safety of people in the elevator.

[0074] In other embodiments, when the elevator is not in the door zone, the elevator door can be controlled to remain closed and the drive unit can be controlled to output torque to move the elevator (specifically, it can be moved in the direction of light load) so that when the elevator is in the door zone, the above steps are performed for leveling and opening the door.

[0075] Furthermore, based on any of the above embodiments, another embodiment of the elevator brake failure protection method of this application is proposed. In this embodiment, reference is made to... Figure 5 Step S30 includes:

[0076] Step S31: Send a door-sealing command to the pre-opening door panel, and bypass the door lock switch when the pre-opening door panel receives the door zone signal.

[0077] Sensors can be installed on the door zone of the floor where the elevator is located and on the elevator car. Based on the sensor detection signals, it can be determined whether the elevator is within the door zone. A door zone signal is generated when the elevator is within the door zone; no door zone signal is generated when the elevator is not within the door zone. Therefore, the pre-opening door panel can identify whether it has received a door zone signal after receiving a door closing command, and determine whether the elevator is within the door zone based on whether a door zone signal has been received.

[0078] In this embodiment, the above method ensures that the elevator bypasses the door lock switch only when it is within the door zone, thereby effectively guaranteeing the safety of people inside the elevator.

[0079] Furthermore, in this embodiment, referring to Figure 5 Step S40 includes:

[0080] Step S41: When the door sealing signal is a valid door sealing signal, control the operation contactor to close and control the elevator drive host to continuously output torque in order to control the elevator to maintain leveling and perform door opening operation.

[0081] The running contactor is specifically used to control the power supply to the drive unit. When the running contactor is closed, the drive unit is powered on; when the running contactor is open, the drive unit is powered off.

[0082] When the contactor is closed, the drive unit remains powered on and can operate normally. At this time, the drive unit is controlled to continuously output holding torque so that the elevator can be kept at the level position. During this process, the car door and landing door are controlled to open.

[0083] In this embodiment, when the door lock switch is bypassed, the power supply to the drive host is maintained by closing the operating contactor. The drive host can continuously output torque to enable the elevator to open the door at the level position, thereby ensuring that people inside the elevator can safely leave the elevator when the brake fails.

[0084] Furthermore, based on any of the above embodiments, another embodiment of the elevator brake failure protection method of this application is proposed. In this embodiment, reference is made to... Figure 6 After step S40, the following steps are also included:

[0085] Step S50: When the door opening operation meets the preset conditions, control the elevator to perform the door closing operation; control the elevator to keep the car door closed, and control the elevator to run to a safe area.

[0086] The preset conditions specifically include the elevator's own operating parameters (such as operation time) when the door opening operation stops, or the scene data (such as whether there is a human body) monitored by the elevator inside or at the entrance / exit, which are the target conditions that need to be achieved.

[0087] The safety zone here can specifically be a pre-defined fixed area. In this embodiment, the safety zone is the terminal stations at both ends of the elevator shaft. In other embodiments, the safety zone can also be other floors besides the terminal stations.

[0088] The phrase "keeping the elevator car doors closed" here specifically means that even if an open door command is received, the elevator will stop responding to the open door command.

[0089] When the door opening operation meets the preset conditions, the pre-opening door panel can maintain the bypass door lock switch. During this process, the elevator can be controlled to perform the door closing operation. When the door closing operation is completed, the elevator is controlled to move towards the safe area. However, when the elevator moves outside the door zone, the pre-opening door panel loses the door zone signal, and at this time, the pre-opening door panel stops the bypass door lock switch.

[0090] In this embodiment, the above method can effectively prevent passengers outside the elevator from entering the elevator when the brake fails, thereby effectively reducing the risk of safety problems for personnel when the brake fails.

[0091] Furthermore, in this embodiment, the preset conditions include no input door opening command detected within a preset time period or no obstacle detected at the elevator entrance or exit within a preset time period.

[0092] The preset duration can be a fixed pre-set duration or an actual duration based on the elevator's actual operating conditions. For example, the preset duration can be determined based on the elevator's current height, the maximum torque of the drive unit, and / or the weight of the people inside the elevator. Based on this, the effectiveness of torque maintenance can be ensured when the brake fails, thereby further improving passenger safety.

[0093] The door opening command here specifically refers to a command input based on buttons inside the elevator car or buttons installed in the building where the elevator is located. Detecting an input door opening command indicates that there are still people inside the elevator who need to leave.

[0094] Detection devices can be installed at the elevator entrances and exits to detect the presence of obstacles, such as light detection modules or image detection modules mounted on the elevator doors. In this embodiment, the obstacle refers to a human body. In other embodiments, the obstacle can also refer to anything other than a human body, such as a pet or a handbag. If an obstacle is detected at the entrance or exit, it can be assumed that there are still people inside the elevator who need to open the door and leave.

[0095] If no door opening command is detected within the preset time or no obstacle is detected at the elevator entrance or exit within the preset time, it indicates that all passengers in the elevator have left, and the door opening operation can be completed.

[0096] In this embodiment, the above method helps to ensure that all users have left the elevator before it reaches a safe area, thereby further improving the passenger's elevator experience.

[0097] Furthermore, based on the above embodiments, another embodiment of the elevator brake failure protection method of this application is proposed. In this embodiment, reference is made to... Figure 7 The safe zone includes terminal stations located at both ends of the elevator shaft in the light-load direction of the elevator, and the step of controlling the elevator to run to the safe zone includes:

[0098] Step S51: When the current location of the elevator is the terminal station, control the elevator to perform a stop operation and output a fault prompt message;

[0099] Fault warning messages can be output through a warning module installed in the elevator, or through an external terminal connected to the elevator. Fault warning messages may include text, voice, or light displays.

[0100] During the elevator's parking operation, the elevator gradually decelerates to 0.

[0101] Step S52: When the current location of the elevator is outside the terminal station, control the elevator to move to the terminal station along the light load direction, and perform the stopping operation when the elevator arrives at the terminal station, and output fault prompt information.

[0102] When the car weight is greater than the counterweight, and the light load direction is downward, the elevator is controlled to move downward to the terminal station located at the lower end of the elevator shaft; when the car weight is less than the counterweight, and the light load direction is upward, the elevator is controlled to move upward to the terminal station at the upper end of the elevator shaft.

[0103] In this embodiment, by means of the above method, the elevator can be ensured to run to the terminal station in the light load direction after a failure. Based on this, it can further avoid the elevator itself being damaged or people who have not yet left the elevator in time being injured due to stalling when the brake fails, thereby further improving the safety of people when the elevator brake fails.

[0104] Furthermore, in this embodiment, the step of controlling the elevator to move along the light load direction to the terminal station includes: controlling the elevator to move along the light load direction to the terminal station at a speed lower than a preset threshold.

[0105] The preset threshold here can specifically be less than or equal to 50% of the elevator's maximum operating speed. Moving the elevator at a speed below the preset threshold specifically means that the elevator is running at a low speed.

[0106] The speed here can be a preset speed or determined based on the actual operating conditions of the elevator. For example, the speed can be determined based on the current distance between the elevator and the terminal station, the maximum torque of the drive unit, and / or the weight of the elevator, to further improve the safety of the elevator operation when the brake fails.

[0107] In this embodiment, by having the elevator run at low speed along the light load direction to the terminal station, it is beneficial to ensure that the elevator will not stall and cause damage to the elevator itself or injury to people who have not yet left the elevator in time when the brake fails.

[0108] Furthermore, based on any of the above embodiments, yet another embodiment of the elevator brake failure protection method of this application is proposed. In this embodiment, after the step of controlling the elevator to run to a safe area, the method further includes: controlling the elevator to stop. Here, stopping specifically refers to powering off the entire elevator. In this embodiment, stopping the elevator after it reaches the safe area ensures that an elevator with a failed brake will not be put into operation, thereby improving the safety of elevator users.

[0109] Furthermore, embodiments of the present invention also propose an elevator brake failure protection device, referring to... Figure 8 The elevator brake failure protection device includes:

[0110] The detection module is used to detect the working status of the elevator's brake.

[0111] The leveling control module is used to control the elevator to run to the leveling position when the working state is in failure.

[0112] The bypass control module is used to control the bypass door lock switch of the early door opening panel, and the early door opening panel feeds back a door sealing signal based on the bypass status of the door lock switch;

[0113] The door opening control module is used to control the elevator to maintain leveling and perform door opening operation when the door closing signal is a valid door closing signal.

[0114] In this embodiment, the specific process of each functional module execution step of the elevator brake failure protection device refers to the above embodiment. Since the elevator brake failure protection device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here.

[0115] Furthermore, this invention also proposes a storage medium storing an elevator brake failure protection program. When the elevator brake failure protection program is executed by a processor, it implements the relevant steps of any of the above embodiments of the elevator brake failure protection method.

[0116] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0117] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0118] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, elevator, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0119] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for protecting elevator brakes in case of failure, characterized in that, The elevator brake failure protection method includes: Check the working status of the elevator's brake; When the working state is in failure, the drive host of the elevator is controlled to output a second holding torque so that the elevator runs to the level position; Control the bypass door lock switch of the early opening panel, and the early opening panel feeds back a door sealing signal based on the bypass status of the door lock switch; When the door sealing signal is a valid door sealing signal, the control operation contactor is closed, and the elevator drive host is controlled to continuously output the first holding torque to control the elevator to maintain level and perform door opening operation; The steps for controlling the pre-opening door panel bypass door lock switch include: Send a door-sealing command to the pre-opening door panel, and bypass the door lock switch when the pre-opening door panel receives the door zone signal.

2. The elevator brake failure protection method as described in claim 1, characterized in that, The step of controlling the elevator drive unit to output a second holding torque to bring the elevator to a level position includes: When the elevator is within the door zone, identify whether the elevator has reached the leveling position; When the elevator has reached the level position, the step of controlling the pre-opening door panel bypass door lock switch is executed; When the elevator has not reached the leveling position, the elevator is controlled to perform a re-leveling operation, so that the elevator drive host outputs a second holding torque and returns to the step of identifying whether the elevator has reached the leveling position.

3. The elevator brake failure protection method as described in claim 1, characterized in that, After the step of controlling the elevator to maintain leveling and perform the door opening operation when the door sealing signal is a valid door sealing signal, the method further includes: When the door opening operation meets the preset conditions, the elevator is controlled to perform the door closing operation; The elevator is controlled to keep the car door closed and to move to a safe area.

4. The elevator brake failure protection method as described in claim 3, characterized in that, The preset conditions include no input door opening command detected within a preset time period or no obstacle detected at the elevator entrance or exit within a preset time period.

5. The elevator brake failure protection method as described in claim 3, characterized in that, The safe zone includes terminal stations located at both ends of the elevator shaft, and the step of controlling the elevator to move to the safe zone includes: When the elevator is currently located at the terminal station, control the elevator to perform a stop operation and output a fault prompt message; When the elevator is currently located outside the terminal station, control the elevator to move to the terminal station along the light load direction, and perform the stopping operation when the elevator arrives at the terminal station, and output a fault prompt message.

6. An elevator brake failure protection device, characterized in that, The elevator brake failure protection device includes: The detection module is used to detect the working status of the elevator's brake. The leveling control module is used to control the elevator drive host to output a second holding torque when the working state is in failure, so that the elevator runs to the leveling position; The bypass control module is used to control the bypass door lock switch of the early door opening panel, and the early door opening panel feeds back a door sealing signal based on the bypass status of the door lock switch; The door opening control module is used to control the operation contactor to close and control the elevator drive unit to continuously output a first holding torque when the door sealing signal is a valid door sealing signal, so as to control the elevator to maintain leveling and perform door opening operation; The bypass control module is also used to send a door-sealing command to the pre-opening door panel and bypass the door lock switch when the pre-opening door panel receives the door zone signal.

7. An elevator brake failure protection device, characterized in that, The device includes: a memory, a processor, and an elevator brake failure protection program stored in the memory and executable on the processor, the elevator brake failure protection program being configured to implement the steps of the elevator brake failure protection method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores an elevator brake failure protection program, which, when executed by a processor, implements the steps of the elevator brake failure protection method as described in any one of claims 1 to 5.

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