Elevator, emergency safety system and method

Abstract

The present invention provides an elevator, an emergency safety system and a method, belonging to the technical field of elevator equipment. By arranging a guide shoe assembly with energy recovery and an energy storage assembly for storing the recovered energy of the guide shoe assembly, energy recovery can be performed in the daily operation of the elevator and used as an auxiliary power for the operation of the elevator to save energy and improve the economy of the elevator; and the system can also be used as a safety emergency power supply for the elevator when the elevator faces an emergency situation, so as to enable the safety mechanism to operate normally and protect the operation safety of the elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and in particular to an elevator, an emergency safety system and a method. Background Art

[0002] Elevators are important public transport infrastructure in the field of vertical transportation. They are mainly composed of eight systems, including traction system, braking system, guide system, car system, counterweight system, and control system, providing vertical transport services for users. Failure or abnormality in some links of the existing elevator safety system will cause irreparable loss of life and property to users. In particular, elevator-related safety accidents that have occurred in recent years have made the safety, economy, and reliability of its operation the focus of attention in the industry.

[0003] As for economy, traditional elevators need to consume electric energy to generate kinetic energy to overcome the gravity or potential energy of the car during operation, and the potential energy, rotational kinetic energy and other energies of the elevator are not recovered or the recovery efficiency is low. For example, when the counterweight is greater than the car mass, the counterweight rises and the car falls. At this time, the traction motor applies a reverse torque to prevent the counterweight from rising too fast. When the counterweight falls and the car rises, the traction motor applies a positive torque to drive the car. In this process, the traction motor does work to balance the mass difference between the counterweight and the car. Obviously, a lot of electric energy is consumed in this process. For this reason, some people have proposed to use the kinetic energy of the counterweight or car to generate electricity when it moves. For example, Chinese patent CN104787640B provides a roller guide shoe triggered elevator speed limiter, but it only uses the excess power generated when the elevator is overspeeding to drive the safety clamp, and the loss during the normal operation of the elevator cannot be recycled. For another example, Chinese patent CN116040439A provides a car-type elevator with electric energy recovery, but it adds an additional power generation mechanism to the elevator, which increases the complexity of the elevator system.

[0004] As for safety, when an elevator is facing a fault, it is protected by brakes, safety clamps, buffers, etc. However, in the face of certain extreme situations, such as sudden power failure, brake jamming, etc., the safety measures in the existing technology still have the risk of failure.

[0005] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] Based on this, it is necessary to provide an elevator, an emergency safety system and a method to address the problems of poor safety and economy of current elevators.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A first aspect of the present invention provides an elevator, comprising:

[0009] Car;

[0010] guide;

[0011] A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail;

[0012] An energy storage component, the energy storage component is used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail;

[0013] The elevator is operated according to the following elevator emergency safety method, including:

[0014] Obtaining elevator operating parameters, the elevator operating parameters at least including the rated speed of the car, the car running speed, the guide shoe assembly current and the guide shoe assembly voltage, further comprising the following steps:

[0015] Construct the brake control function:

[0016]

[0017] in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t;

[0018] When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car;

[0019] The construction process of the elevator braking neural network model is as follows:

[0020] Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t;

[0021] Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1;

[0022] The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

[0023] In one embodiment, the guide shoe assembly includes a guide shoe frame and a guide shoe pulley, wherein the guide shoe pulley is rotatably disposed on the guide shoe frame, and generates electrical energy when the guide shoe pulley rotates relative to the guide shoe frame, and the guide shoe pulley is guide-connected to the guide rail.

[0024] In one of the embodiments, a permanent magnet is disposed on one of the guide shoe pulley and the guide shoe frame, and a coil is disposed on the other of the guide shoe pulley and the guide shoe frame.

[0025] In one embodiment, it also includes:

[0026] Safety clamps;

[0027] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

[0028] In one embodiment, it also includes:

[0029] Speed ​​limiter;

[0030] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

[0031] In one of the embodiments, a first vibration damper is arranged between the guide shoe pulley and the guide shoe frame.

[0032] In one embodiment, the first shock absorber is a damping spring shock absorber.

[0033] In one of the embodiments, the guide shoe assembly includes a guide shoe frame and a sliding shoe head, the sliding shoe head is connected to the guide shoe frame, and the sliding shoe head can be slidably connected to the guide rail; the guide shoe assembly generates electrical energy when sliding relative to the guide rail.

[0034] A second aspect of the present invention provides an elevator, comprising:

[0035] A guide wheel, which is arranged in the elevator shaft, on the top of the car or at the bottom of the car, and is used to guide the traction wire rope, and generates electric energy when the guide wheel rotates;

[0036] An energy storage component, the energy storage component is used to store the electrical energy generated when the guide wheel rotates;

[0037] The elevator operates according to the elevator emergency safety method in the embodiment of the first aspect of the present invention.

[0038] In one embodiment, it also includes:

[0039] Car;

[0040] guide;

[0041] A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail;

[0042] An energy storage component is also used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail.

[0043] In one embodiment, it also includes:

[0044] Safety clamps;

[0045] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

[0046] In one embodiment, it also includes:

[0047] Speed ​​limiter;

[0048] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

[0049] A third aspect of the present invention provides an elevator, comprising:

[0050] A traction wheel, the traction wheel is connected to the traction motor, the traction wheel is used to guide the traction wire rope, and the traction wheel generates electric energy when it rotates;

[0051] An energy storage component, the energy storage component is used to store the electrical energy generated when the traction wheel rotates;

[0052] The elevator operates according to the elevator emergency safety method in the embodiment of the first aspect of the present invention.

[0053] In one embodiment, it also includes:

[0054] Car;

[0055] guide;

[0056] A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail;

[0057] An energy storage component is also used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail.

[0058] In one embodiment, it also includes:

[0059] Safety clamps;

[0060] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

[0061] In one embodiment, it also includes:

[0062] Speed ​​limiter;

[0063] The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

[0064] A fourth aspect of the present invention provides an emergency safety system, which includes:

[0065] An elevator, comprising:

[0066] Car;

[0067] guide;

[0068] A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail;

[0069] A traction motor, the traction motor is used to pull the car to move along the guide rail;

[0070] An energy storage component is used to store the electric energy generated when the guide shoe component moves relative to the guide rail, and the energy storage component is also used to drive the traction motor to move.

[0071] The fifth aspect of the present invention provides an elevator emergency safety method, which is implemented by the emergency safety system in the fourth aspect of the present invention, and includes:

[0072] S100, obtaining the operation parameters of the elevator;

[0073] S200, when the operating parameters of the elevator are abnormal, the energy storage component drives the traction motor to operate.

[0074] In one embodiment, the abnormal condition in step S200 at least includes instability of the elevator main power supply network, and step S200 further includes:

[0075] S210, the energy storage component drives the traction motor to drive the car to the nearest floor;

[0076] S290, open the elevator door and landing door.

[0077] In one embodiment, step S210 further includes:

[0078] S212, obtaining the counterweight mass and car mass of the elevator, and driving the traction motor to drive the car to the nearest upper floor or the nearest lower floor according to the counterweight mass and the car mass.

[0079] In one embodiment, the abnormal condition in step S200 includes at least abnormal car speed and / or abnormal counterweight speed, and step S200 further includes:

[0080] S202, the energy storage component drives the traction motor to brake until the car stops moving;

[0081] S210, the energy storage component drives the traction motor to drive the car to the nearest floor.

[0082] The sixth aspect of the present invention provides an elevator emergency safety method, which is implemented by the emergency safety system in the fourth aspect of the present invention, and includes: obtaining elevator operation parameters, the elevator operation parameters at least including the rated speed of the car, the car running speed, the guide shoe assembly current and the guide shoe assembly voltage, and also includes the following steps:

[0083] Construct the brake control function:

[0084]

[0085] in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t;

[0086] When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car;

[0087] The construction process of the elevator braking neural network model is as follows:

[0088] Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t;

[0089] Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. It represents the torque error function. Among them, the number of empirical samples n is 100, and the braking adjustable parameter Take the experience value as 1.1;

[0090] The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

[0091] The beneficial effects of the present invention are:

[0092] The elevator, emergency safety system and method provided by the embodiments of the present invention, by providing a guide shoe assembly with energy recovery and an energy storage assembly for storing the energy recovered by the guide shoe assembly, can not only recover energy during the daily operation of the elevator and serve as an auxiliary power for the elevator operation to save energy and improve the economy of the elevator; but can also serve as a safety emergency power supply for the elevator when the elevator faces an emergency situation, so as to enable the safety mechanism to operate normally and protect the safe operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Figure 1 A schematic diagram of the plan structure of an elevator provided in one embodiment of the present invention;

[0094] Figure 2 A schematic diagram of the three-dimensional structure of an elevator provided in one embodiment of the present invention;

[0095] Figure 3 A schematic diagram of the planar structure of a guide shoe assembly in an elevator provided by an embodiment of the present invention;

[0096] Figure 4A schematic diagram of the three-dimensional structure of a guide shoe assembly in an elevator provided in one embodiment of the present invention.

[0097] in:

[0098] 100, car; 200, guide rail; 300, guide shoe assembly; 310, guide shoe frame; 320, guide shoe pulley; 330, first shock absorber. DETAILED DESCRIPTION

[0099] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0100] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0101] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0102] An embodiment of the present invention provides an elevator that is suitable for vertical transportation in civil facilities, vertical transportation in industrial settings, or vertical transportation needs in other scenarios.

[0103] Specifically, Figure 1 and Figure 2 As shown, the elevator provided by the first embodiment of the present invention includes:

[0104] The car 100 is an elevator component for carrying passengers or goods, and can move vertically in an elevator shaft.

[0105] The guide rails 200 are installed on the elevator shaft wall. Generally, the guide rails 200 are arranged in pairs to limit the freedom of movement of the car 100 and the counterweight, so that the car 100 and the counterweight can move up and down along the guide rails 200. Generally, a guide rail frame is arranged between the guide rail 200 and the elevator shaft wall, and the guide rail frame is fixedly installed on the elevator shaft wall, and the guide rail 200 is fixedly installed on the guide rail frame.

[0106] The guide shoe assembly 300 is fixedly connected to the car 100, and the guide shoe assembly 300 is slidably connected to the guide rail 200. The guide shoe assembly 300 is arranged in pairs on opposite sides of the car 100. The guide shoe assembly 300 enables the car 100 to perform reciprocating lifting and lowering motion along the guide rail 200, and generates electrical energy when the guide shoe assembly 300 moves relative to the guide rail 200.

[0107] Generally, when the elevator is running, the masses of the counterweight and the car 100 are often different. When the counterweight is heavier and the counterweight rises, the traction motor generally outputs a positive torque to drive the counterweight to rise and the car 100 to descend; when the counterweight is heavier and the counterweight descends, the traction motor generally outputs a reverse torque to prevent the counterweight from descending too quickly. In this process, the kinetic energy difference caused by the mass imbalance of the counterweight and the car 100 can be collected by the guide shoe assembly 300; and, since the energy recovery of the guide shoe assembly 300 is an energy-consuming process, it can also eliminate the mass difference between the counterweight and the car 100 to a certain extent. In particular, in some cases, the masses of the counterweight and the car 100 are basically the same. At this time, the output of the traction motor is only used to drive the counterweight and the car 100, and there is no need to overcome the mass difference between the two. During the movement of the counterweight and the car 100, the guide shoe assembly 300 can still recover energy, and the recovered energy mainly comes from the output of the traction motor.

[0108] Energy storage assembly (not shown in the figure), the energy storage assembly is used to store the electric energy generated when the guide shoe assembly 300 moves relative to the guide rail 200. The generated electric energy can be used as auxiliary power in daily elevator operation and as an emergency power supply for elevator safety in emergency situations. When used as auxiliary power, it can participate in the traction of the elevator, as an auxiliary power for the traction motor, and can also be used as the main or all power sources for other components, such as the power source for lighting facilities, ventilation facilities, door systems, etc.; when used as an emergency power supply for safety in emergency situations, it mainly serves as a triggering mechanism for some safety mechanisms, so that safety mechanisms including safety clamps, speed limiters, traction motor brakes, etc. can operate normally to protect the safety of elevator operation. The energy storage assembly can be set on the top of the car 100 and move with the car 100, or it can be set in the elevator machine room.

[0109] The elevator provided in the embodiment of the present invention, by providing a guide shoe assembly with energy recovery and an energy storage assembly for storing the energy recovered by the guide shoe assembly, can not only recover energy during the daily operation of the elevator and serve as an auxiliary power for the operation of the elevator to save energy and improve the economy of the elevator; but can also serve as a safety emergency power supply for the elevator when the elevator faces an emergency situation, so as to enable the safety mechanism to operate normally and protect the operation safety of the elevator.

[0110] Furthermore, the elevator in the embodiment of the present invention can operate according to a specific elevator emergency safety method, and the specific operating steps are shown below.

[0111] In one embodiment, the traction motor brake (including the brake) is passively triggered, that is, the traction motor is powered on and works normally under normal conditions, and the brake control circuit is powered on, so that the brake is in a relaxed state. When the traction motor is powered off due to a power outage or other faults, the brake control circuit is powered off, so that the brake is activated and the traction wheel is clamped for braking. However, under extreme conditions, the brake may still have safety hazards. For example, the power circuit of the traction motor fails and the control circuit is normal. At this time, although the traction motor loses traction, the brake does not operate normally to clamp the traction wheel. In this embodiment, an additional control circuit of the traction motor brake is set based on the energy storage component. When the guide shoe component detects that the elevator is running abnormally, the energy storage component can send an active control signal to the traction motor brake, so that the traction motor brake is activated to complete the elevator braking or speed limit. In this embodiment, the traction motor brake is additionally controlled by the guide shoe component and the energy storage component, thereby enhancing the safety of elevator operation.

[0112] In one embodiment, the safety clamp is passively triggered, and it is activated after receiving a signal from a speed limiter or other detector that detects abnormal operation of the car, clamps the guide rail and achieves speed limiting or stopping of the car. In this embodiment, an additional signal control of the safety clamp is set based on the energy storage component. When the guide shoe component detects abnormal operation of the elevator, the energy storage component can send an active control signal to the safety clamp, so that the safety clamp is activated to complete the elevator braking or speed limiting. In this embodiment, the guide shoe component and the energy storage component are used to perform additional safety control on the traction motor brake, thereby enhancing the operating safety of the elevator.

[0113] In one embodiment, the speed limiter is an active trigger, such as a centrifugal speed limiter, that is, when the car is overspeeding, the centrifugal force of the speed limiter pulley increases, thereby driving a series of components such as the speed limiter hook to move, so that the pressure block presses the wire rope and achieves the speed limit or stop of the car. However, under extreme conditions, the speed limiter may still have safety hazards, such as the speed limiter centrifugal mechanism, hook and other action mechanisms cannot move when the car exceeds the safe speed due to rust and other faults. In this embodiment, an active trigger mechanism of the speed limiter is set based on the energy storage component. For example, for a centrifugal speed limiter, an action cylinder is set on the speed limiter pressure block. When the action cylinder is actuated, it can drive the pressure block to approach the speed limiter pulley and press the traction wire rope to complete the elevator braking or speed limit; when the guide shoe assembly detects that the elevator is running abnormally, the speed limiter action cylinder is driven by the energy storage assembly to move, thereby driving the pressure block to move, and then driving the safety clamp to move, so as to complete the elevator braking or speed limit. In this embodiment, additional safety control is performed on the speed limiter through the guide shoe assembly and the energy storage assembly, thereby enhancing the operating safety of the elevator.

[0114] Similarly, in the above-mentioned embodiment of performing additional safety control on the traction motor brake and the safety clamp, an active driving mechanism, such as an actuating cylinder, can also be provided on the traction motor brake and the safety clamp to actively control the traction motor brake and the safety clamp through the energy storage component, thereby further enhancing the operation safety of the elevator.

[0115] In one embodiment, if Figure 1-Figure 4 As shown, the guide shoe assembly 300 is a rolling guide shoe, and the guide shoe assembly 300 includes a guide shoe frame 310 and a guide shoe pulley 320. The guide shoe pulley 320 is rotatably arranged on the guide shoe frame 310, and generates electric energy when the guide shoe pulley 320 rotates relative to the guide shoe frame 310. The guide shoe pulley 320 is guided and connected to the guide rail. For example, a permanent magnet can be arranged on one of the guide shoe pulley 320 and the guide shoe frame 310, and a coil can be arranged on the other of the guide shoe pulley 320 and the guide shoe frame 310. During the operation of the elevator, the guide shoe pulley 320 abuts against the guide rail to rotate, and the guide shoe frame 310 does not rotate, that is, the guide shoe pulley 320 and the guide shoe frame 310 rotate relatively, and the coil cuts the magnetic field generated by the permanent magnet to generate electric energy. It can be understood that the present invention does not limit the power generation structure, and other common rotary power generation structures can be applied to the present invention.

[0116] In one of the embodiments, energy is recovered by the traction motor. Generally, when the elevator is running, the masses of the counterweight and the car are often different. When the counterweight is light and the car is heavy, when the counterweight rises, the traction motor generally outputs a positive torque to drive the counterweight to rise and the car to fall. At this time, the traction motor outputs a driving force to drive the counterweight to rise. When the counterweight is heavy and the car is light, when the counterweight falls, the traction motor generally outputs a reverse torque to prevent the counterweight from falling too fast. At this time, the traction motor outputs a braking force to prevent the counterweight from falling too fast. At this time, the kinetic energy of the rotation of the traction wheel can be recovered, which can not only achieve energy recovery, but also reduce the power output of the traction motor based on energy recovery. Specifically, a permanent magnet can be set on one of the traction wheel and the traction motor mounting frame, and a coil can be set on the other of the traction wheel and the traction motor mounting frame. During the operation of the elevator, due to the rotation of the traction wheel, the traction motor mounting frame does not rotate, that is, the traction wheel and the traction motor mounting frame rotate relative to each other, and the coil cuts the magnetic field generated by the permanent magnet to generate electrical energy. For another example, the traction wheel and the power input shaft of the external generator can be connected together through a coupling, and energy recovery can be performed when the traction motor output force is used as a braking force. It can be understood that the present invention does not limit the power generation structure, and other common rotary power generation structures can be applied to the present invention.

[0117] In one of the embodiments, energy is recovered through the guide wheel. Specifically, a permanent magnet can be set on one of the guide wheel and the guide wheel mounting frame, and a coil can be set on the other of the guide wheel and the guide wheel mounting frame. During the operation of the elevator, the guide wheel rotates, but the guide wheel mounting frame does not rotate, that is, the guide wheel and the guide wheel mounting frame rotate relatively, and the coil cuts the magnetic field generated by the permanent magnet to generate electrical energy. Alternatively, the guide wheel and the power input shaft of the external generator are connected together through a coupling, and energy is recovered when the guide wheel rotates. It can be understood that the present invention does not limit the power generation structure, and other common rotary power generation structures can be applied to the present invention.

[0118] In one of the embodiments, energy is recovered through a compensation chain pulley. Specifically, a permanent magnet can be set on one of the compensation chain pulley and the compensation chain pulley mounting frame, and a coil can be set on the other of the compensation chain pulley and the compensation chain pulley mounting frame. During the operation of the elevator, the compensation chain pulley rotates, but the compensation chain pulley mounting frame does not rotate, that is, the compensation chain pulley and the compensation chain pulley mounting frame rotate relative to each other, and the coil cuts the magnetic field generated by the permanent magnet to generate electrical energy. Alternatively, the compensation chain pulley and the power input shaft of an external generator are connected together through a coupling, and energy is recovered when the guide wheel rotates. It can be understood that the present invention does not limit the power generation structure, and other common rotary power generation structures can be applied to the present invention.

[0119] It is understandable that various wheels and pulleys in the elevator system can be used as kinetic energy recovery mechanisms, such as any one of the guide shoe pulley, traction wheel, guide wheel, and compensation chain pulley, or any combination of multiple of them as an energy recovery mechanism.

[0120] In one embodiment, the elevator is further provided with a first sensor, which is used to detect the amount of electric energy generated by the guide shoe assembly, and to send a corresponding control signal according to the amount of electric energy generated by the guide shoe assembly. For example, for a guide shoe assembly provided with a guide shoe pulley, the rotation speed of the guide shoe pulley is directly proportional to the speed of the traction wire rope. When the car speed is constant, the rotation speed of the guide shoe pulley is also constant. When the rotation speed of the guide shoe pulley is constant, the amount of electric energy generated by the guide shoe pulley is also constant. When the elevator car is overspeeding, the rotation speed of the guide shoe pulley increases, and the electric energy generated by the guide shoe pulley also increases. It is possible to determine whether the elevator car is overspeeding by detecting the amount of electric energy generated by the guide shoe pulley, and to send a corresponding control signal. In one embodiment, the elevator is further provided with a first sensor, which is used to detect the amount of electric energy generated by the traction wheel, and to send a corresponding control signal according to the amount of electric energy generated by the traction wheel. For example, for a traction wheel with an external generator, the rotation speed of the traction wheel is directly proportional to the speed of the traction wire rope. When the car speed is constant, the rotation speed of the traction wheel is also constant. When the rotation speed of the traction wheel is constant, the amount of electric energy generated by the traction wheel is also constant. When the elevator car is overspeeding, the rotation speed of the traction wheel increases, and the amount of electric energy generated by the traction wheel also increases. It is possible to determine whether the elevator car is overspeeding by detecting the amount of electric energy generated by the traction wheel and send a corresponding control signal.

[0121] In one embodiment, the elevator is further provided with a first sensor, which is used to detect the amount of electric energy generated by the guide wheel and send a corresponding control signal according to the amount of electric energy generated by the guide wheel. For example, for the guide wheel of the external generator, the rotation speed of the guide wheel is directly proportional to the speed of the traction wire rope. When the car speed is constant, the rotation speed of the guide wheel is also constant. When the rotation speed of the guide wheel is constant, the amount of electric energy generated by the guide wheel is also constant. When the elevator car is overspeeding, the rotation speed of the guide wheel increases, and the electric energy generated by the guide wheel also increases. It is possible to determine whether the elevator car is overspeeding by detecting the amount of electric energy generated by the guide wheel and send a corresponding control signal.

[0122] In one embodiment, the elevator is also provided with a first sensor, which is used to detect the amount of electric energy generated by the compensation chain pulley and send a corresponding control signal according to the amount of electric energy generated by the compensation chain pulley. For example, for the compensation chain pulley of the external generator, the rotation speed of the compensation chain pulley is directly proportional to the speed of the traction wire rope. When the car speed is constant, the rotation speed of the compensation chain pulley is also constant. When the rotation speed of the compensation chain pulley is constant, the amount of electric energy generated by the compensation chain pulley is also constant. When the elevator car is overspeeding, the rotation speed of the compensation chain pulley increases, and the electric energy generated by the compensation chain pulley also increases. It can be determined whether the elevator car is overspeeding by detecting the amount of electric energy generated by the compensation chain pulley, and a corresponding control signal is sent. In one embodiment, the elevator is also provided with a first control signal generator, which is used to optimize the speed of the elevator car. For example, the first sensor signal is decomposed by empirical mode decomposition (EMD) to obtain a first sensor signal component. The first sensor signal component is regressively predicted to obtain a prediction signal of the first sensor signal component. The prediction signal of the first sensor signal component is reconstructed to obtain the first sensor prediction signal. The incremental signal of the first sensor signal and the first sensor prediction signal is obtained, and the incremental signal is used as the input of the PID controller to obtain the elevator control signal.

[0123] In one embodiment, the first sensor S is used to detect the amount of electric energy generated by the guide shoe assembly, and based on (min{E(x(t),c(t))+μP[x(t-1),t-1]}≤P[x(t),t]≤max{E(x(t),c(t))+μP[x(t+1),t+1]}, wherein P[x(t),t] is the performance function of the guide shoe assembly at time t, x(t) is the state vector of the system at time t, c(t) is the control action, E() is the utility function, μ is the energy dissipation factor, Max and min are the maximum and minimum values ​​of the threshold interval judged by the component, and if it is determined to be an emergency, the safety clamp action is controlled according to the amount of electric energy Et generated by the guide shoe assembly.

[0124] It is understandable that the number of first sensors in the elevator system can be one or more, and multiple first sensors can be set on any one or more of the guide shoe pulley, traction wheel, guide wheel, and compensation chain pulley. In addition, the signal priority of the first sensor set on the guide shoe pulley is higher than the signal priority of the first sensor at other locations. In one embodiment, Figure 3 and Figure 4As shown, the elevator includes a guide shoe assembly, and the guide shoe assembly includes a guide shoe pulley 320 and a guide shoe frame 310, and a first shock absorber 330 is arranged between the guide shoe pulley 320 and the guide shoe frame 310. During the operation of the elevator, the car may move laterally relative to the guide rail due to factors such as the change of the center of mass of the car and the movement of people in the car. If the guide shoe pulley 320 and the guide shoe frame 310 are rigidly connected, the movement of the car relative to the guide rail directly acts on the guide shoe frame 310 through the guide shoe pulley 320 rigidly, which is easy to generate noise and vibration, or reduce the contact force between the guide shoe pulley 320 and the guide rail. In this embodiment, by arranging the first shock absorber 330 between the guide shoe assembly and the guide shoe frame 310, the noise, vibration, etc. generated by the movement of the car relative to the guide rail can be effectively eliminated, and the good contact between the guide shoe pulley 320 and the guide shoe frame 310 can be always maintained.

[0125] In one embodiment, the first shock absorber is a damping spring shock absorber. It is understandable that other common shock absorbers can also be applied to the present invention.

[0126] In one embodiment, the first shock absorber is an active shock absorber, which includes a first spring, an electric hydraulic cylinder and a pressure sensor, and a servo controller. The two ends of the first spring are respectively fixedly connected to the guide shoe pulley and the guide shoe frame. The cylinder body of the electric hydraulic cylinder is connected to the guide shoe frame, and the output end is connected to the guide shoe pulley. The pressure sensor is used to detect the pressure applied to the first spring. The servo controller controls the action of the electric hydraulic cylinder according to the detection result of the pressure sensor, and the electric hydraulic cylinder is driven by the energy storage component.

[0127] In one embodiment, the guide shoe assembly is a sliding guide shoe, and the guide shoe assembly includes a guide shoe frame and a sliding shoe head, the sliding shoe head is connected to the guide shoe frame, and the sliding shoe head can be slidably connected to the guide rail; the guide shoe assembly generates electrical energy when it slides relative to the guide rail. Specifically, a permanent magnet is set on one of the guide shoe assembly and the guide rail, and a coil is set on the other of the guide shoe assembly and the guide rail. When the car reciprocates, the guide shoe assembly and the guide rail move relative to each other, so that the coil cuts the magnetic field generated by the permanent magnet to generate electrical energy. It can be understood that the present invention does not limit the power generation structure, and other common reciprocating power generation structures can be applied to the present invention.

[0128] In one of the embodiments, the power generation structure based on the sliding guide shoe can work simultaneously with the rotary power generation structure on the traction wheel, guide wheel, compensation chain pulley, etc.

[0129] In one embodiment, the elevator is further provided with a first sensor, which is used to detect the amount of electric energy generated by the guide shoe assembly and send a corresponding control signal according to the amount of electric energy generated by the guide shoe assembly. For example, for a sliding guide shoe, the speed of the guide shoe assembly is the same as the speed of the car. When the speed of the car is constant, the speed of the guide shoe assembly is also constant. When the speed of the guide shoe assembly is constant, the amount of electric energy generated by the guide shoe assembly is also constant. When the elevator car is overspeeding, the speed of the guide shoe assembly increases, and the amount of electric energy generated by the guide shoe assembly also increases. It is possible to determine whether the elevator car is overspeeding by detecting the amount of electric energy generated by the guide shoe assembly and send a corresponding control signal.

[0130] It is understandable that the number of the first sensors in the elevator system can be one or more, and the multiple first sensors can be arranged on any one or more of the guide shoe assembly, the traction wheel, the guide wheel, and the compensation chain pulley. In addition, the signal priority of the first sensor arranged on the guide shoe assembly is higher than the signal priority of the first sensor at other positions.

[0131] An embodiment of the present invention further provides an emergency safety system, which includes an elevator, wherein the elevator includes:

[0132] Car;

[0133] guide;

[0134] A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail;

[0135] A traction motor, the traction motor is used to pull the car to move along the guide rail;

[0136] An energy storage component is used to store the electric energy generated when the guide shoe component moves relative to the guide rail, and the energy storage component is also used to drive the traction motor to move.

[0137] Based on the emergency safety system, an embodiment of the present invention further provides an elevator emergency safety method, which includes the following steps:

[0138] S100, obtaining the operation parameters of the elevator;

[0139] S200, when the operating parameters of the elevator are abnormal, the energy storage component drives the traction motor to operate.

[0140] Among them, the operating parameters of the elevator include but are not limited to the power supply status of the elevator, the speed of the elevator car or counterweight, the mass of the elevator car or counterweight, etc., and the driving action of the traction motor includes but is not limited to releasing the traction motor brake, causing the traction motor to rotate or brake.

[0141] In this embodiment, by providing a guide shoe assembly and an energy storage assembly, the guide shoe assembly recovers energy during normal operation of the elevator and stores it in the energy storage assembly. When the elevator operation is abnormal, the energy storage assembly can be used as a safe emergency power supply in an emergency situation, or as a triggering mechanism for some safety mechanisms, so that safety mechanisms including safety clamps, speed limiters, traction motor brakes, etc. can operate normally to protect the safe operation of the elevator.

[0142] In one embodiment, the abnormal condition in step S200 at least includes instability of the elevator main power supply network, and step S200 further includes:

[0143] S210, the energy storage component drives the traction motor to drive the car to the nearest floor;

[0144] S290, open the elevator door and landing door.

[0145] In this embodiment, the abnormal situation is the instability of the elevator main power supply network, which may be caused by regional power outages, problems with the elevator power supply line, problems with the elevator power control system, etc. At this time, the traction motor loses its main power source. After receiving the main power supply network instability signal, the energy storage component provides power to the traction motor, drives the car to move to the nearest floor, and then opens the elevator door and landing door, so that people can leave the car as soon as possible, reduce the difficulty of rescue, and avoid secondary accidents.

[0146] In one embodiment, step S210 further includes:

[0147] S212, obtaining the counterweight mass and car mass of the elevator, and driving the traction motor to drive the car to the nearest upper floor or the nearest lower floor according to the counterweight mass and the car mass.

[0148] Generally, the energy storage component stores less energy and has a smaller output power. In order to ensure that it can smoothly drive the car to the nearest floor, the energy consumption when driving the car should be reduced as much as possible. When the counterweight mass is large and the car mass is small, the car can be driven to move to the upper floor. At this time, the energy storage component can limit the speed of the car by controlling the speed limiter and other mechanisms; when the counterweight mass is small and the car mass is large, the car can be driven to move to the lower floor. At this time, the energy storage component can limit the speed of the car by controlling the speed limiter and other mechanisms.

[0149] In one embodiment, the counterweight mass and car mass of the elevator can be determined based on the working power of the traction motor and the kinetic energy recovery power of the guide shoe assembly before the abnormal situation occurs. When the car moves upward, if the counterweight is heavier, the traction motor and the guide shoe assembly jointly play a braking role, and the working power of the traction motor is reduced compared with the case where no kinetic energy recovery is performed; when the car moves upward, if the car is heavier, the traction motor plays a driving role, and the guide shoe assembly plays a braking role if kinetic energy recovery is performed, and the working power of the traction motor is increased compared with the case where no kinetic energy recovery is performed; when the car moves downward, if the car is heavier, the traction motor and the guide shoe assembly jointly play a braking role, and the working power of the traction motor is reduced compared with the case where no kinetic energy recovery is performed; when the car moves upward, if the counterweight is heavier, the traction motor plays a driving role, and the guide shoe assembly plays a braking role if kinetic energy recovery is performed, and the working power of the traction motor is increased compared with the case where no kinetic energy recovery is performed. In this way, the counterweight mass and car mass of the elevator can be judged, and further judgment can be made based on this.

[0150] It can be understood that the driving action referred to in this embodiment means that the direction of the output force of the traction motor acting on the traction wire rope is the same as the moving direction of the car.

[0151] In one embodiment, the abnormal condition in step S200 includes at least abnormal car speed and / or abnormal counterweight speed, and step S200 further includes:

[0152] S202, the energy storage component drives the traction motor to brake until the car stops moving;

[0153] S210, the energy storage component drives the traction motor to drive the car to the nearest floor.

[0154] In this embodiment, the abnormal situation is that the car is overspeeding. At this time, the energy storage component drives the traction motor and the brake to first decelerate until the car stops, and then moves the car to the nearest floor and opens the elevator door and the floor door.

[0155] When the car is overspeeding, the energy storage component can also slow down the car by driving speed limiting mechanisms such as safety clamps.

[0156] Based on the above emergency safety system, an embodiment of the present invention further provides an elevator emergency safety method, which includes the following steps:

[0157] The elevator operation parameters are obtained, which include at least the rated speed of the elevator car, the running speed of the elevator car, the current of the guide shoe assembly, and the voltage of the guide shoe assembly. The speed limit is obtained based on the rated speed of the elevator car. The speed limit is 115% of the rated speed of the elevator car. The implementer can set it according to the actual situation. When the speed of the elevator car exceeds the speed limit, the elevator is braked.

[0158] The following steps are also included:

[0159] Construct the brake control function:

[0160]

[0161] in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t;

[0162] When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car;

[0163] The construction process of the elevator braking neural network model is as follows:

[0164] Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t;

[0165] Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. It represents the torque error function. Among them, the number of empirical samples n is 100, and the braking adjustable parameter Take the experience value as 1.1;

[0166] The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

[0167] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0168] The above-described embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An elevator, characterized in that: include: Car; guide; A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail; An energy storage component, the energy storage component is used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail; The elevator is operated according to the following elevator emergency safety method, including: Obtaining elevator operating parameters, the elevator operating parameters at least including the rated speed of the car, the car running speed, the guide shoe assembly current and the guide shoe assembly voltage, further comprising the following steps: Construct the brake control function: in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t; When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car; The construction process of the elevator braking neural network model is as follows: Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t; Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1; The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

2. The elevator according to claim 1, characterized in that The guide shoe assembly comprises a guide shoe frame and a guide shoe pulley, wherein the guide shoe pulley is rotatably arranged on the guide shoe frame, generates electric energy when the guide shoe pulley rotates relative to the guide shoe frame, and the guide shoe pulley is guide-connected to the guide rail.

3. The elevator according to claim 2, characterized in that: A permanent magnet is arranged on one of the guide shoe pulley and the guide shoe frame, and a coil is arranged on the other of the guide shoe pulley and the guide shoe frame.

4. The elevator according to claim 2, characterized in that: Also includes: Safety clamps; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

5. The elevator according to claim 2, characterized in that: Also includes: Speed ​​limiter; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

6. The elevator according to claim 2, characterized in that: A first vibration damper is arranged between the guide shoe pulley and the guide shoe frame.

7. The elevator according to claim 6, characterized in that The first shock absorber is a damping spring type shock absorber.

8. The elevator according to claim 1, characterized in that The guide shoe assembly comprises a guide shoe frame and a sliding shoe head, wherein the sliding shoe head is connected to the guide shoe frame and can be slidably connected to the guide rail; the guide shoe assembly generates electrical energy when sliding relative to the guide rail.

9. An elevator, characterized in that: include: A guide wheel, which is arranged in the elevator shaft, on the top of the car or at the bottom of the car, and is used to guide the traction wire rope, and generates electric energy when the guide wheel rotates; An energy storage component, the energy storage component is used to store the electrical energy generated when the guide wheel rotates; The elevator is operated according to the following elevator emergency safety method, including: Acquiring elevator operation parameters, the elevator operation parameters at least including the rated speed of the car, the car running speed, the guide wheel current and the guide wheel component voltage, further comprising the following steps: Construct the brake control function: in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t; When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car; The construction process of the elevator braking neural network model is as follows: Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t; Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1; The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

10. The elevator according to claim 9, characterized in that Also includes: Car; guide; A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail; An energy storage component is also used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail.

11. The elevator according to claim 10, characterized in that: Also includes: Safety clamps; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

12. The elevator according to claim 10, characterized in that Also includes: Speed ​​limiter; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

13. An elevator, characterized in that: include: A traction wheel, the traction wheel is connected to the traction motor, the traction wheel is used to guide the traction wire rope, and the traction wheel generates electric energy when it rotates; An energy storage component, the energy storage component is used to store the electrical energy generated when the traction wheel rotates; The elevator is operated according to the following elevator emergency safety method, including: Acquiring elevator operating parameters, the elevator operating parameters at least including the rated speed of the car, the car running speed, the traction sheave current and the traction sheave voltage, further comprising the following steps: Construct the brake control function: in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t; When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car; The construction process of the elevator braking neural network model is as follows: Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t; Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1; The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

14. The elevator according to claim 13, characterized in that Also includes: Car; guide; A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail; An energy storage component is also used to store the electrical energy generated when the guide shoe assembly moves relative to the guide rail.

15. The elevator according to claim 14, characterized in that Also includes: Safety clamps; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the safety clamp according to the amount of electric energy generated by the guide shoe assembly.

16. The elevator according to claim 14, characterized in that Also includes: Speed ​​limiter; The first sensor is used to detect the amount of electric energy generated by the guide shoe assembly and control the action of the speed limiter according to the amount of electric energy generated by the guide shoe assembly.

17. An emergency safety system, characterized in that: include: An elevator, comprising: Car; guide; A guide shoe assembly, wherein the guide shoe assembly is fixedly connected to the car, the guide shoe assembly is slidably connected to the guide rail, the guide shoe assembly is arranged in pairs on opposite sides of the car, and the guide shoe assembly generates electrical energy when moving relative to the guide rail; A traction motor, the traction motor is used to pull the car to move along the guide rail; An energy storage component, the energy storage component is used to store the electric energy generated when the guide shoe assembly moves relative to the guide rail, and the energy storage component is also used to drive the traction motor to move; The elevator is operated according to the following elevator emergency safety method, including: Obtaining elevator operating parameters, the elevator operating parameters at least including the rated speed of the car, the car running speed, the guide shoe assembly current and the guide shoe assembly voltage, further comprising the following steps: Construct the brake control function: in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t; When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car; The construction process of the elevator braking neural network model is as follows: Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t; Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1; The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

18. An elevator emergency safety method, characterized in that: The elevator emergency safety method is implemented by the emergency safety system in claim 17, and includes: S100, obtaining the operation parameters of the elevator; S200, when the operating parameters of the elevator are abnormal, the energy storage component drives the traction motor to operate.

19. The elevator emergency safety method according to claim 18, characterized in that: The abnormal situation in step S200 at least includes instability of the elevator main power supply network, and step S200 also includes: S210, the energy storage component drives the traction motor to drive the car to the nearest floor; S290, open the elevator door and landing door.

20. The elevator emergency safety method according to claim 19, characterized in that: Step S210 also includes: S212, obtaining the counterweight mass and car mass of the elevator, and driving the traction motor to drive the car to the nearest upper floor or the nearest lower floor according to the counterweight mass and the car mass.

21. The elevator emergency safety method according to claim 18, characterized in that: The abnormal situation in step S200 at least includes abnormal car speed and / or abnormal counterweight speed. Step S200 also includes: S202, the energy storage component drives the traction motor to brake until the car stops moving; S210, the energy storage component drives the traction motor to drive the car to the nearest floor.

22. An elevator emergency safety method, characterized in that: The elevator emergency safety method is implemented by the emergency safety system in claim 17, and includes: Obtaining elevator operating parameters, the elevator operating parameters at least including the rated speed of the car, the car running speed, the guide shoe assembly current and the guide shoe assembly voltage, further comprising the following steps: Construct the brake control function: in, It represents the elevator car speed at time t. Indicates the rated speed of the elevator car. represents the braking torque, It represents the output of the elevator braking neural network model at time state t; When the elevator car speed is greater than the rated speed of the elevator car, use Braking control of the elevator car; The construction process of the elevator braking neural network model is as follows: Constructing the brake constraint vector ,in, It represents the guide shoe current at time t. It represents the guide shoe voltage at time t. It represents the elevator car speed at time t; Constructing the Braking Error Function ,in, represents the adjustable braking parameter, n represents the number of empirical samples, It represents the optimal braking torque at time t. It represents the current braking torque at time t. represents the torque error function; where the number of empirical samples n is 100, and the adjustable braking parameter Take the experience value as 1.1; The braking constraint vector is used as the input of the elevator braking neural network model, and the braking error function is used for training. The elevator braking neural network model is a 5-layer fully connected network.

Images