Safe operation elevator and power monitoring system thereof

Abstract

The invention belongs to the technical field of elevators, and particularly relates to a safe operation elevator and a power monitoring system thereof, the safe operation elevator comprises an elevator assembly, a control cabinet, a main machine, an upper rope gripper, a lower rope gripper and a guide wheel are fixedly mounted on the elevator assembly, and a controller is arranged at the upper end of the control cabinet. Two ends of a traction steel wire rope on a host traction wheel in the elevator assembly are connected with a counterweight and a car, one end of the steel wire rope is fixedly connected with the counterweight through upper and lower rope grippers and a guide wheel, and the other end of the steel wire rope is fixedly connected with the car. An intelligent torque sensor is arranged in the host, a brake is provided with a pressure sensor, related data or information monitored (or verified) is analyzed through the intelligent torque sensor and the pressure sensor which are arranged in the host and compared with original data in big data of the virtual host, and when it is judged that an elevator breaks down or has a problem, the brake is started. If yes, an operating system in the control cabinet enables the elevator to be leveled nearby or open a door to put people, or the elevator is stopped to be repaired to display faults, and meanwhile relevant digital safety information is sent to an elevator remote monitoring equipment terminal.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and in particular relates to a safe-running elevator and a power monitoring system thereof. Background Art

[0002] As the use of elevators in my country increases, people are more and more eager for safe and convenient operation of elevators, as well as comfortable riding. As far as the safety of elevator equipment is concerned, the number of accidental safety accidents or incidents of elevators is increasing year by year, and the accidents caused by failures or human factors during the operation of elevators are unbearable to watch. For our technicians in the elevator industry, we have the responsibility and obligation to systematically and comprehensively analyze and solve such related safety issues and social concerns. Summary of the invention

[0003] The purpose of the present invention is to provide a safe operation elevator and a power monitoring system thereof to solve the problems in the prior art. The specific technical solutions are as follows:

[0004] A safe-running elevator comprises an elevator assembly, on which a control cabinet, a main machine and upper and lower rope clamps are fixedly mounted, a controller is arranged on the upper end of the control cabinet, a counterweight and a car are connected at both ends of a traction wire rope on a traction wheel of the main machine in the elevator assembly, one end of the traction wire rope is fixedly connected to the counterweight through upper and lower rope clamps and a guide wheel, and the other end is fixedly connected to the car, and an intelligent torque sensor is arranged in the main machine.

[0005] Further, the host comprises a host body, a stator is arranged in the host body, a brake wheel is rotatably connected in the host body, a magnet is arranged on the brake wheel, the stator is magnetically connected to the magnet, the brake wheel is fixedly connected to the piezoelectric crystal in the intelligent torque sensor, and the ratchet in the intelligent torque sensor is fixedly connected to the host traction wheel, the piezoelectric crystal is rotatably connected to the motor shaft through the brake wheel, the host traction wheel is rotatably connected to the motor shaft through the ratchet in the intelligent torque sensor, the host traction wheel is connected to the traction wire rope transmission, an end cover and a pressure cover are arranged at the end of the host body, a wiring device of the intelligent torque sensor is arranged in the host body, the wiring device and the ball friction electrical slip ring are electrically connected to the controller, and the intelligent torque sensor is electrically connected to the controller;

[0006] The intelligent torque sensor comprises a piezoelectric crystal, the brake wheel is fixedly connected to the piezoelectric crystal, the piezoelectric crystal is clamped with the traction wheel ratchet, the traction wheel ratchet is fixedly connected to the main engine traction wheel, and the piezoelectric crystal is rotationally connected to the motor shaft through a ball friction electrical slip ring.

[0007] Furthermore, the two sides of the main engine base body are provided with brakes and brake state detection devices, the brake includes a brake static plate and a brake dynamic plate, the brake state detection device is installed on the upper side of the brake, the brake state detection device includes a mechanical adjustment mechanism, the mechanical adjustment mechanism is connected to the brake dynamic plate, the front end of the mechanical adjustment mechanism is connected to the amplification mechanism in the pressure sensor switch box, the pressure sensor switch box is provided with an electrical device, and the pressure sensor switch box is connected to the brake static plate;

[0008] The brake state detection device is provided with a pressure sensor, which includes an elastic insulator between the amplification mechanism and the positive contact, an elastic insulator between the positive contact and the negative contact, the positive contact is connected to one end of the light-emitting diode, and the other end of the light-emitting diode is connected to the negative contact.

[0009] Furthermore, the bidirectional speed limiter on the elevator assembly is rotatably connected to the speed limiter main shaft, a secondary encoder is provided on the speed limiter main shaft, the bidirectional speed limiter is transmitted to one end of the speed limiter wire rope, and is connected to the car lifting device, and the other end of the speed limiter wire rope is fixedly connected to the car lifting device through the speed limiter tensioning wheel in the speed limiter tensioning device.

[0010] Two buffers are arranged at the bottom of the elevator assembly shaft, and the two buffers are respectively located directly below the counterweight and the car.

[0011] The elevator assembly well is provided with a landing door outside, the landing door is installed on the ground outside the door opening of the elevator assembly well, and an intelligent door lock is provided on the landing door.

[0012] A power monitoring system, the power monitoring system is used to monitor any of the above-mentioned safe operation elevators, including: a monitoring acquisition module, a monitoring center module and a monitoring feedback module;

[0013] The monitoring collection module, the monitoring center module and the monitoring feedback module are all arranged in the safe operation elevator described in any one of the above items;

[0014] The monitoring and acquisition module is used to collect data information for safe operation of the elevator to obtain monitoring and acquisition data information;

[0015] The monitoring center module is used to monitor and analyze the brake and traction capacity according to the monitoring and collected data information to obtain the monitoring and analysis results;

[0016] The monitoring feedback module is used to perform control adjustment and fault reminder for the elevator according to the monitoring feedback module.

[0017] Furthermore, the monitoring center module performs brake monitoring and analysis based on the monitoring and collected data information, including: judging whether the host is operating normally based on the monitoring and collected data information; when the host is operating normally, using a virtual host to perform edge computing and comparison on the brake, analyzing whether the brake is released or braked normally, and obtaining a first analysis and judgment result; when the first analysis and judgment result is that the brake is not released or braked normally, determining the control information of the brake, and simultaneously providing a fault maintenance reminder; when the first analysis and judgment result is that the brake is released or braked normally, analyzing whether the switch pressure of the pressure sensor switch box meets the requirements of the switch pressure threshold based on the first analysis and judgment result, and obtaining a second analysis and judgment result; and analyzing whether the sensor working torque of the intelligent torque sensor meets the torque value control range, and obtaining a third analysis and judgment result; determining whether the brake is normal according to the second and third analysis and judgment results, and obtaining a fourth analysis and judgment result; determining the control information of the brake according to the fourth judgment result, and simultaneously providing a fault maintenance reminder.

[0018] Furthermore, the monitoring center module performs traction capacity monitoring and analysis based on the monitoring and collected data information, including: determining the load of the car based on the car monitoring and collected data, obtaining the current load of the car, and judging whether the car is overloaded based on the current load of the car; when the car is not overloaded, edge computing and comparison are performed on the brake using a virtual host, and the running state and speed of the car are analyzed based on the monitoring and collected data to obtain the car state and car speed, and judging whether the car continues to run after reaching the upper and lower terminal stations based on the car state to obtain the fifth analysis and judgment result, and judging whether the car is overspeeding based on the car speed to obtain To the sixth analysis and judgment result, then determine whether the brake is normal according to the fifth and sixth analysis and judgment results, obtain the seventh analysis and judgment result, and determine the control information of the brake according to the seventh analysis and judgment result, and at the same time make a fault maintenance reminder; when the car is overloaded, use the virtual host to perform edge calculation and comparison on the brake, analyze whether the elevator has a slide phenomenon, obtain the eighth analysis and judgment result, determine whether the brake is normal according to the eighth analysis and judgment result, obtain the ninth analysis and judgment result, and determine the control information of the brake according to the ninth analysis and judgment result, and at the same time make a fault maintenance reminder.

[0019] Further, the monitoring feedback module includes: an instruction feedback unit and a reminder feedback unit;

[0020] The command feedback unit is used to determine the brake control command according to the brake control information combined with the type of safe operation elevator, and send the brake control command to the elevator host;

[0021] The reminder feedback unit is used to generate information for fault repair reminder, and feed back the generated fault repair information to the safe operation elevator to perform fault repair reminder.

[0022] The advantages of the present invention are:

[0023] 1. Through the host's built-in intelligent torque sensor and brake pressure sensor, the relevant data monitored are analyzed and compared with the original data in the virtual host big data. If it is determined that there is an elevator fault or problem, the operating system in the control cabinet will make the elevator level or open the door to let people in, or stop the elevator for repair to display the fault, and at the same time send relevant digital safety information to the elevator remote monitoring device terminal.

[0024] 2. The controller includes a microcomputer processor, a virtual host and other electrical connections, which process power control information and data quickly and efficiently through 5G communication to ensure the safe and reliable operation of its power components. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the layout of the elevator host safe operation monitoring system of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall appearance of the host of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the host of the present invention;

[0028] Figure 4 for Figure 3 A cross-sectional view of the intelligent torque sensor along section AA;

[0029] Figure 5 The figure is a schematic diagram of the overall appearance of the brake state monitoring device of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the brake monitoring pressure sensor of the present invention;

[0031] Figure 7 A schematic diagram of the power monitoring system of the present invention.

[0032] Description of the markings in the figure:

[0033] Elevator assembly 1; controller 2; control cabinet 3; main machine 4; upper and lower rope clamps 5; guide wheel 6; traction wire rope 7; counterweight 8; car 9; bidirectional speed limiter 10; speed limiter main shaft 11; speed limiter wire rope 12; speed limiter tensioning wheel 13; tensioning device 14; buffer 15; floor door 16; intelligent door lock 17; brake state detection device 19; brake wheel 20; main machine traction wheel 21; piezoelectric crystal 22; traction wheel pawl 23; ball friction electrical slip ring 24; motor shaft 25; encoder 26; wiring device 27; main machine base 28; stator 29; magnet 30; bearing 31; end cover 32; pressure cover 33; mechanical adjustment mechanism 34; electrical device 35; pressure sensor switch box 36; brake static plate 37; brake dynamic plate 38; amplification mechanism 39; positive contact 40; negative contact 41; light emitting diode 42; elastic insulator 43. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] Embodiment 1

[0037] like Figure 1-6 As shown, an elevator traction machine safety monitoring operation device includes an elevator assembly 1, on which a control cabinet 3, a main machine 4 and upper and lower rope clamps 5 are fixedly installed, a controller 2 is provided at the upper end of the control cabinet 3, and a counterweight 8 and a car 9 are connected to both ends of a traction wire rope 7 on a main machine traction wheel 21 in the elevator assembly 1, one end of the traction wire rope 7 is fixedly connected to the counterweight 8 through the upper and lower rope clamps 5 and the guide wheel 6, and the other end is fixedly connected to the car 9, and an intelligent torque sensor is provided in the main machine 4;

[0038] The working principle of the above technical solution is: the upper and lower rope clamps 5 are fixed on the load-bearing beam of the main machine 4, and are used in conjunction with the two-way speed limiter 4 to provide an additional braking device for the elevator. A backup power supply is configured in the control cabinet 3, which has an ARD function;

[0039] Controller 2 includes a microcomputer processor, a virtual host and other electrical connections, and processes power control information and data quickly and efficiently through 5G communication to ensure safe and reliable operation of its power components;

[0040] Microcomputer processor: used for related information in the power system control loop and monitoring system, as well as feedback signals from the sensors and other devices to determine whether there is a fault in the power system during operation, and to make dynamic identification and disposal;

[0041] Virtual host: It is constructed in the cloud after the sensors and their devices are connected to the Internet. The virtual host is used to determine whether the power system has failed after receiving the feedback signal from the smart sensors and their devices. The electrical connection between the 5G communication system and the sensors and their devices, as well as the monitoring system, constitute the 5G cloud network architecture;

[0042] The host 4 has a built-in intelligent torque sensor to analyze the relevant data monitored and compare it with the original data in the virtual host big data. When it is determined that there is an elevator fault or problem, the operating system in the control cabinet 3 will make the elevator level the nearest floor or open the door to let people in, or stop the elevator for repair to display the fault, and at the same time send relevant digital safety information to the elevator remote monitoring device terminal.

[0043] Embodiment 2

[0044] like Figure 1-6 As shown, the bidirectional speed limiter 10 on the elevator assembly 1 is rotatably connected to the speed limiter main shaft 11, and a secondary encoder is provided on the speed limiter main shaft 11. The bidirectional speed limiter 10 is transmitted to one end of the speed limiter wire rope 12 and is connected to the car lifting device. The other end of the speed limiter wire rope 12 is fixedly connected to the car lifting device through the speed limiter tensioning wheel 13 in the speed limiter tensioning device 14.

[0045] Two buffers 15 are provided at the bottom of the hoistway of the elevator assembly 1 , and the two buffers 15 are respectively located directly below the counterweight 8 and the car 9 .

[0046] The elevator assembly 1 has a landing door 16 outside the hoistway, which is installed on the ground outside the door opening of the hoistway of the elevator assembly 1, and has an intelligent door lock 17;

[0047] The working principle of the above technical solution is as follows: the buffer 15 plays a buffering role to prevent the counterweight 8 and the car 9 from falling and causing a strong impact, and the smart door lock 17 can control the opening and closing of the floor door 16.

[0048] Embodiment 3

[0049] like Figure 1-6As shown, the host 4 includes a host body 28, a stator 29 is arranged in the host body 28, a brake wheel 20 is rotatably connected in the host body 28, a magnetic steel 30 is arranged on the brake wheel 20, the stator 29 is magnetically connected to the magnetic steel 30, the brake wheel 20 is fixedly connected to the piezoelectric crystal 22 in the intelligent torque sensor, and the ratchet 23 in the intelligent torque sensor is fixedly connected to the host traction wheel 21, the piezoelectric crystal 22 is rotatably connected to the motor shaft 25 through the brake wheel 20, the host traction wheel 21 is rotatably connected to the motor shaft 25 through the ratchet 23 in the intelligent torque sensor, the host traction wheel 21 is transmission-connected to the traction wire rope 7, an end cover 32 and a pressure cover 33 are arranged at the end of the host body 28, an intelligent torque sensor wiring device 27 is arranged in the host body 28, the wiring device 27 and the ball friction electrical slip ring 24 are both electrically connected to the controller 2, and the intelligent torque sensor is electrically connected to the controller 2;

[0050] The intelligent torque sensor includes a piezoelectric crystal 22, the brake wheel 20 is fixedly connected to the piezoelectric crystal 22, the piezoelectric crystal 22 is clamped with the traction wheel pawl 23, the traction wheel pawl 23 is fixedly connected to the main engine traction wheel 21, and the piezoelectric crystal 22 is rotatably connected to the motor shaft 25 through a ball friction electrical slip ring 24;

[0051] The working principle of the above technical solution is as follows: an intelligent sensor is added to the host 4, and the characteristics of the sensor are used to extract the relevant torque information (or data) between the host traction wheel 21 and the brake during operation, and send it to the controller 2 for processing. When the motor starts to rotate, the brake moving plate 38 is actuated (the brake is opened), and the brake wheel 20 rotates, and the meshing torque [M(Fi)] between the piezoelectric crystal 22 fixed thereon and the traction wheel ratchet 23 drives the host traction wheel 21 to rotate on the motor shaft 25, relying on the traction steel The wire rope 7 enables the car 9 to move up and down. When the car 9 reaches the station and is level, the motor is powered off and the brake is engaged for emergency braking, then the brake wheel 20 stops rotating, causing the main engine traction wheel 21 to also stop rotating. Under the traction force between the main engine traction wheel 21 and the traction wire rope 7, the car 9 is ensured to reach the station at the level. On the other hand, the moving coil of the ball friction electrical slip ring 24 connected to the piezoelectric crystal 22 also rotates together with the motor shaft 25, and the wiring device 27 is combined with the stationary coil of the ball friction electrical slip ring 24 and is electrically connected to the controller 2.

[0052] Embodiment 4

[0053] like Figure 1-6As shown, the two sides of the main engine base body 28 are provided with brakes and brake state detection devices 19, the brake includes a brake static plate 37 and a brake dynamic plate 38, the brake state detection device 19 is installed on the upper side of the brake, the brake state detection device 19 includes a mechanical adjustment mechanism 34, the mechanical adjustment mechanism 34 is connected to the brake dynamic plate 38, the front end of the mechanical adjustment mechanism 34 is connected to the amplification mechanism 39 in the pressure sensor switch box 36, the pressure sensor switch box 36 is provided with an electrical device 35, and the pressure sensor switch box 36 is connected to the brake static plate 37;

[0054] The brake state detection device 19 is provided with a pressure sensor, the pressure sensor includes an elastic insulator 43 between the amplification mechanism 39 and the positive contact 40, an elastic insulator 43 between the positive contact 40 and the negative contact 41, the positive contact 40 is connected to one end of a light emitting diode 42, and the other end of the light emitting diode 42 is connected to the negative contact 41;

[0055] The working principle of the brake state detection device 19 is as follows: when the motor is powered off, the brake moving plate 38 moves under its spring force (brake closed), and through the mechanical adjustment mechanism 34, the pressure sensor switch box 36 is pressed to its critical value, and an electrical signal is generated, and the electrical device 35 sends its signal to the controller 2. When the motor receives the command to start, the brake moving plate 38 compresses the spring under the action of electromagnetic force (brake open), so that the electrical switch of the pressure sensor switch box 36 is disconnected, and its switch separation signal is sent to the controller 2. Therefore, by turning the brake on and off, it can ensure that the brake state monitoring function is in an effective supervision state. At the same time, the instantaneous value of M(Fi) at this time (i.e., the current value) can be detected.

[0056] Working principle of the pressure sensor: before the brake is powered off and the brake is applied, a clearance between the brake wheel and the brake is retained between the brake moving plate 38 and the brake static plate 37, which is a value of δ (usually ≤0.7mm). When the motor is started, the brake is opened, and the internal spring force is compressed to separate from the brake wheel 20, and the brake clearance is a brake adjustment value (less than the value of δ). At this time, the positive contact 40 is disconnected from the negative contact 41 under the action of the elastic insulator 43. At the same time, the light-emitting diode 42 is lit, which verifies that the sensor electrical switch is disconnected normally. When the motor is powered off, the brake moving plate 38 (brake) brakes the brake wheel 20 under the action of its spring force to prevent the brake wheel 20 from continuing to rotate, and the friction between the main traction wheel 21 and the traction wire rope 7 prevents the car 9 (including the load) from moving. Its characteristics are that in order to ensure that the brake wheel 20 and the two sets of brakes have a uniform clearance, the mechanical adjustment mechanism 34 and the elastic insulator 43 are used for adjustment; secondly, the electrical contacts of the pressure sensor are ensured to operate normally under the brake adjustment value (less than the δ value). In addition, the two sets of brakes are controlled separately by electrical components in the control cabinet 3, and the brake wheel 20 can be braked by a single set to obtain the relevant M(Fi) instantaneous value (i.e., the current value).

[0057] Brake static plate 22: A negative contact 41 is preset, and when a certain pre-pressure is applied to the negative contact 41, an electric interlock signal is generated; a positive contact 40 is preset, and the whole is a safety electrical switch. When receiving an electrical command to open / close the brake, the positive contact 40 on the box body moves, and applies / releases pre-pressure to the negative contact 41;

[0058] Pressure sensor: used to send electrical instructions to the controller 2, and after the instructions are sent, calculate the action distance δ value between the brake static plate 37 and the brake dynamic plate 38 according to the pre-pressure, and determine whether the brake is closed / opened in place. At the same time, it can detect the instantaneous value of M(Fi) (i.e., the current value) of the intelligent torque sensor.

[0059] According to the relevant inspection and testing regulations in the national professional technical standards and elevator inspection regulations, the configuration of the main engine power monitoring system and the design of the brake safety operation detection device are implemented as follows for the main engine power monitoring system and operation mechanism:

[0060] 1. When the AC permanent magnet traction machine is in normal operation, the configuration of the host 4 power monitoring system and the brake safety operation detection device are under 24-hour monitoring. First, when each set of mechanical components is correctly operated (released or braked) each time the main brake is actuated, ensure that the electrical switch of the pressure sensor is open and closed normally (that is, the switch pressure threshold meets the requirements). Second, when the main brake is in the braking action, it detects that the instantaneous value (dynamic torque) of M (Fi) at this time meets the torque value control range. Otherwise, the relevant data is entered into the virtual host through the controller 2 operating system for storage and comparison. When the identification system is displayed as abnormal, the operating system issues a base station command to stop the elevator; and sends maintenance instructions and information to the elevator; or displays that the elevator has stopped running and is waiting for repair.

[0061] 2. Brake status monitoring function

[0062] When the host power monitoring system detects that each set of brake force or each set of mechanical components is operating correctly (releasing or braking) at each action, and when failure is detected, the relevant data enters the virtual host through the controller 2 operating system for storage and comparison. When the identification system shows that it is abnormal, the operating system issues a command to stop the elevator base station; and sends maintenance instructions and information to the elevator; or displays that the elevator stops running due to failure and is waiting for repair.

[0063] 3. No-load traction capacity monitoring function

[0064] When the car is empty or has one or two passengers (children), the main engine is driven to pass the top station, or the elevator continues to run upward or overspeeds despite the weight on the buffer, the controller 2, auxiliary encoder and intelligent door lock 17 in the main engine power safety monitoring system will monitor the failure of the main engine electrical control or brake, and the relevant information will enter the virtual host through the controller 2 for edge computing and comparison. When the identification system is displayed as abnormal, the operating system issues an emergency elevator stop command to the main engine. The additional braking device also starts the emergency stop of the elevator. At this time, maintenance instructions and information are sent to the elevator remote safety monitoring equipment terminal. And the system displays that the elevator has stopped running due to failure and is waiting for repair.

[0065] 4. Loaded traction capacity monitoring function

[0066] When the elevator is not overloaded or fully loaded with passengers and is going down, problems such as brakes or overload devices occur, causing the elevator to "slide". The controller 2, auxiliary encoder and intelligent door lock 17 in the host power monitoring system monitor the failure of the host electrical control or overload device. The relevant monitoring information enters the virtual host through the controller 2 for edge computing and comparison. When the identification system is displayed as abnormal, the operating system issues an instruction for the host to stop at the adjacent floor station. At the same time, the additional braking device is activated to stop the elevator at the nearest level; or a maintenance instruction and information are issued to the elevator remote monitoring device terminal; and the elevator stops running due to failure and is waiting for repair.

[0067] 5. To ensure the effectiveness of the elevator host power monitoring system and its devices, and to ensure that its 24-hour uninterrupted operation and monitoring are normal, it is imperative to complete the relevant contents and regulations of the following elevator inspection regulations:

[0068] 1) A1.2.3.6 Brake status monitoring function

[0069] Check whether it can monitor the braking force of each set of brakes or the correct action (releasing or braking) of each set of mechanical parts during each action, and whether it can prevent the normal operation of the elevator when failure is detected.

[0070] 2) A1.3.11 Traction capacity test

[0071] a.A1.3.11.1 No-load traction capacity test

[0072] (1) When the car is unloaded and the counterweight is pressing on the buffer and the main drive unit is rotating in the upward direction of the elevator, observe whether the suspension device slips relative to the traction sheave or the main drive unit stops running;

[0073] (2) When the car is unloaded, move upward at rated speed to the upper part of the travel range, cut off the power supply to the motor and brake, and observe whether the car (carrier) comes to a complete stop.

[0074] b.A1.3.11.2 Loaded traction capacity test

[0075] Load the car with a load of 125% of the rated load capacity, descend to the lower part of the travel at the rated speed, cut off the power supply to the motor and the brake, and observe whether the car (carrying device) stops completely.

[0076] 3) A1.3.12 Braking performance test

[0077] a.A1.3.12.1 Group braking test

[0078] The car is loaded with a load of rated load and descends at a rated speed. If one set of brake components driving the main engine electromechanical brake fails, observe whether the remaining brake components can decelerate, stop and keep the car stopped.

[0079] b.A1.3.12.2125% rated load braking test

[0080] Load the car with a load of 125% of the rated load, and descend to the lower part of the travel at the rated speed. Cut off the power supply to the motor and the brake, and observe whether the brake can stop the main drive unit and whether there is no obvious deformation or damage to the car and its attached parts and guide rails.

[0081] After completing, checking and confirming the relevant test requirements and data, first, the data model and corresponding sample data are stored in the microcomputer processor and virtual host as the comparison interval value or threshold value for future elevator operation. Secondly, using the elevator remote safety monitoring platform, the test data is input into the equipment terminal of the third-party elevator inspection agency through the port protocol as the evaluation value of whether the elevator is qualified.

[0082] 6. The above-mentioned elevator power monitoring system and its devices are all electrically connected to the 5G communication and elevator remote safety monitoring system in the Internet of Things. It also includes software programs that run during the operation, detection and supervision of elevators and other equipment. In addition, the operating procedures of the present invention mainly utilize current artificial intelligence technology, 5G (or ground-based enhanced Beidou system) network communication technology, so that elevators and other equipment can interact and enter the remote ecological safety monitoring and management platform.

[0083] Embodiment 5

[0084] like Figure 7 As shown, an embodiment of the present invention provides a power monitoring system for monitoring the safe operation of any elevator described in any one of embodiments 1 to 4, including: a monitoring acquisition module, a monitoring center module and a monitoring feedback module;

[0085] The monitoring and acquisition module is used to collect data information for safe operation of the elevator to obtain monitoring and acquisition data information;

[0086] The monitoring center module is used to monitor and analyze the brake and traction capacity according to the monitoring and collected data information to obtain the monitoring and analysis results;

[0087] The monitoring feedback module is used to perform control adjustment and fault reminder for the elevator according to the monitoring feedback module.

[0088] In the above technical solution, the monitoring and acquisition module is deployed in the device for safe operation of the elevator, and real-time data information is collected on the status of the elevator through electrical connection to obtain monitoring and acquisition data information. The monitoring and acquisition data information includes: host status, brake status, switch box status, car status, car speed, controller status, etc. Among them, the car status refers to the floor where the car is located.

[0089] In the above technical solution, the monitoring and acquisition module transmits the monitoring and acquisition data information to the monitoring center module after obtaining the monitoring and acquisition data information.

[0090] In the above technical solution, the monitoring center module uses a microcomputer processing device to monitor and analyze the brake and traction capacity based on the monitoring and collected data information.

[0091] The above technical solution realizes monitoring of safe-running elevators through the power monitoring system, so that the abnormal operation of safe-running elevators can be discovered, and control adjustment and fault repair can be carried out in time, reducing the occurrence of safety accidents, ensuring the safety of safe-running elevators, and improving the reliability of safe-running elevators. The relationship between the operation of safe-running elevators and monitoring and acquisition modules is established, so that the safe-running elevators can make control adjustments and fault reminders according to the monitoring and analysis results of the power monitoring system, and the monitoring center module realizes the analysis of monitoring and acquisition data information, which will not only not affect the normal operation of the elevator, but also can timely discover the abnormal operation of safe-running elevators through the analysis of monitoring and acquisition data information, and timely control adjustment and fault repair for safe-running elevators, reducing the occurrence of safety accidents, ensuring the safety of safe-running elevators, and improving the reliability of safe-running elevators. The monitoring feedback module can directly control and adjust the safe-running elevators, so that when the safe-running elevators are running, emergency measures can be taken in a short time to reduce the hazards of safety hazards. At the same time, the fault reminder can enable relevant personnel to repair the safe-running elevators in time, so that the safe-running elevators can resume operation in time.

[0092] Embodiment 6

[0093] Based on Example 5, the monitoring center module performs brake monitoring and analysis based on the monitoring and collected data information, including: judging whether the host is operating normally based on the monitoring and collected data information; when the host is operating normally, using a virtual host to perform edge computing and comparison on the brake, analyzing whether the brake is released or braked normally, and obtaining a first analysis and judgment result; when the first analysis and judgment result is that the brake is not released or braked normally, determining the control information of the brake, and simultaneously performing a fault maintenance reminder; when the first analysis and judgment result is that the brake is released or braked normally, analyzing whether the switch pressure of the pressure sensor switch box meets the requirements of the switch pressure threshold based on the first analysis and judgment result, and obtaining a second analysis and judgment result; and analyzing whether the sensor working torque of the intelligent torque sensor meets the torque value control range, and obtaining a third analysis and judgment result; determining whether the brake is normal according to the second analysis and judgment result and the third analysis and judgment result, and obtaining a fourth analysis and judgment result; determining the control information of the brake according to the fourth judgment result, and simultaneously performing a fault maintenance reminder.

[0094] In the above technical solution, the switch pressure threshold is pre-set according to the limit state of the elevator brake.

[0095] In the above technical scheme, the torque value control range is obtained based on the operating conditions for the safe operation of the elevator brake monitoring test, traction capacity test and braking performance test, wherein the traction capacity test is divided into a traction capacity test under no-load conditions and a traction capacity test under load, and the braking performance test is divided into a group braking test and a 125% rated load braking test. When conducting the test, M(Fi) is estimated based on the theoretical estimated value of the motor power and brake static torque of the test product and the relevant product specifications to obtain the M(Fi) estimated value; the safe operation elevator test is carried out according to the operating conditions combined with different speeds and different loads to obtain the safe operation elevator test data and obtain the M(Fi) detection value; the safe operation elevator test data is sorted and analyzed according to the operating conditions to obtain the adjustment deviation ±4σ under the normal distribution, thereby determining the torque value control range, and the statistical data information shown in the following table can be obtained:

[0096]

[0097] Furthermore, when the virtual host is used to perform edge computing and comparison on the brake, the monitoring and collected data information of the brake status is received, and the current torque monitoring data of the brake is obtained based on the monitoring and collected data information of the brake status; the torque value control range of the safe operation elevator under the current operating condition is determined according to the current operating condition of the safe operation elevator, and the torque value control range is used to perform edge computing and comparison on the current torque monitoring data of the brake.

[0098] Among them, the sensor working torque M(Fi) is calculated by M(Fi)=k FignR, k is the forward and reverse torque coefficient of the sensor load, and k∈(+1~+2), (-1~-2), Fi(i∈1, 2, 3…n) is the dynamic critical value of the intelligent torque sensor under the i-th operating condition, gn is the gravitational acceleration value; R is the resistance radius value of the torque sensor.

[0099] In the test process, the torque M output by the motor in the elevator power system is estimated and analyzed by M=Md+Mj. Mj is the static torque of the elevator load, and Md is the dynamic torque of the elevator transmission system. Its magnitude is related to the total mass G of the elevator system, the equivalent diameter D of the elevator transmission system, and the flywheel inertia GD2 of the elevator system. It can be calculated by Md=(GD2 / 375)(dn / dt).

[0100] The maximum torque required to act on the brake wheel is calculated by Mb=Mbj+Mbd, where Mbj is the static torque converted to the brake. The calculation formula is: Mbj=[(1.25-K)Q+T]g n η1Dt / (2i1i2) Where K is the balance coefficient, Q is the rated load, T is the weight of the wire rope on the car side (if there is a compensation device, it is the weight difference between the wire rope and the compensation device), g n is the acceleration of gravity, η1 is the mechanical efficiency related to braking, Dt is the traction wheel diameter, i1 is the reduction ratio of the reduction box, and i2 is the traction ratio; Mbd is the dynamic torque, and its calculation formula is: Mbd = (GD2 / 4)(dω1 / dt), among which GD2 is the flywheel inertia, and dω1 / dt is the speed variable of the brake wheel.

[0101] In the above technical scheme, the control information of the brake is determined according to the fourth judgment result, and a fault maintenance reminder is made at the same time. When the fourth judgment result is that the brake is normal, there is no need to determine the control information of the brake and make a fault maintenance reminder. When the fourth judgment result is that the brake is incorrect, the cause of the abnormal brake is determined, and the control information of the brake is determined according to the cause of the abnormal brake, and a fault maintenance reminder is made at the same time.

[0102] The above technical solution realizes the monitoring and analysis of the brake, so that the abnormality of the brake can be discovered in time, and the safety hazards caused by the abnormal operation of the elevator due to the abnormal brake can be avoided, thereby ensuring the safety of the safe operation of the elevator. In the process of brake monitoring and analysis, the switch pressure and working torque are combined for specific consideration, so that whether the brake is normal can be analyzed from multiple factors, thereby improving the monitoring accuracy of the brake, making it more accurate to determine whether the brake is normal, and then more accurately obtaining the brake control information and fault maintenance reminders.

[0103] Embodiment 7

[0104] Based on the sixth embodiment, the monitoring center module performs traction capacity monitoring and analysis based on the monitoring and collected data information, including: determining the load of the car based on the car monitoring and collected data, obtaining the current load of the car, and judging whether the car is overloaded based on the current load of the car. When the car is not overloaded, the virtual host is used to perform edge calculation and comparison on the brake, and the running state and speed of the car are analyzed based on the monitoring and collected data to obtain the car state and car speed, and whether the car continues to run after reaching the upper and lower terminal stations is judged based on the car state, and the fifth analysis and judgment result is obtained, and at the same time, it is judged whether the car is speeding based on the car speed. , obtain the sixth analysis and judgment result, and then determine whether the brake is normal according to the fifth analysis and judgment result and the sixth analysis and judgment result, obtain the seventh analysis and judgment result, and determine the control information of the brake according to the seventh analysis and judgment result, and at the same time make a fault maintenance reminder; when the car is overloaded, use the virtual host to perform edge calculation and comparison on the brake, analyze whether the elevator has a slide phenomenon, obtain the eighth analysis and judgment result, determine whether the brake is normal according to the eighth analysis and judgment result, obtain the ninth analysis and judgment result, and determine the control information of the brake according to the ninth analysis and judgment result, and at the same time make a fault maintenance reminder.

[0105] In the above technical scheme, the brake control instruction is determined according to the seventh analysis and judgment result, and a fault maintenance reminder is made at the same time. When the seventh analysis and judgment result is that the brake is normal, there is no need to determine the brake control instruction and make a fault maintenance reminder. When the seventh analysis and judgment result is that the brake is abnormal, the brake control instruction is determined and a fault maintenance reminder is made at the same time.

[0106] The above technical solution determines the current load of the car based on the data collected by the car monitoring, so that different analyses can be performed according to whether the car is overloaded during the traction capacity monitoring and analysis, so that the traction capacity can be monitored and analyzed more comprehensively, and the accuracy of the traction capacity monitoring and analysis is improved. In addition, when the brake is abnormal, the brake control command is determined, and a fault maintenance reminder is performed at the same time, which can not only stop the abnormal operation of the elevator in time and reduce the risk factor, but also notify the relevant personnel in time, so that the relevant personnel can perform fault maintenance in time.

[0107] Embodiment 8

[0108] Based on the seventh embodiment, the monitoring feedback module includes: an instruction feedback unit and a reminder feedback unit;

[0109] The command feedback unit is used to determine the brake control command according to the brake control information combined with the type of safe operation elevator, and send the brake control command to the elevator host;

[0110] The reminder feedback unit is used to generate information for fault maintenance reminder, and feed back the generated fault maintenance information to the safe operation elevator to perform fault maintenance reminder.

[0111] In the above technical solution, when the instruction feedback unit determines the brake control instruction according to the brake control information combined with the type of safe-running elevator, the type of safe-running elevator is determined, thereby obtaining the elevator control characteristics according to the type of safe-running elevator, and then the brake control instruction is determined according to the brake control information combined with the elevator control characteristics, thereby obtaining the brake control instruction.

[0112] In the above technical solution, the control information of the brake includes: emergency stop, stop at adjacent floor, etc.

[0113] In the above technical solution, when the reminder feedback unit generates information for the fault maintenance reminder, it retrieves the cause of the abnormal brake according to the brake control information, obtains the cause of the fault, matches the solution according to the cause of the fault, and then generates fault maintenance information according to the cause of the fault and the solution, so as to feed back the fault maintenance information to the safely operating elevator for fault repair reminder.

[0114] The above technical solution can obtain the brake control instructions that match the safe operation elevator through the instruction feedback unit, so that the operation intervention of the safe operation elevator can be directly implemented through the brake control instructions, so that the operation of the safe operation elevator can be directly controlled and adjusted, thereby improving the control efficiency of the elevator, and effectively reducing the response time of the safe operation elevator to the monitoring and analysis results, thereby reducing the hidden dangers of the safe operation elevator; through the reminder feedback unit, the monitoring and analysis results of the safe operation elevator can be fed back to the relevant personnel in a more intuitive way, and the attention of the relevant personnel can be improved in the form of reminders, so that the relevant personnel can understand the cause of the elevator failure, thereby providing guidance for the maintenance of the safe operation elevator.

[0115] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A safe-running elevator, characterized in that: The invention comprises an elevator assembly (1), wherein a control cabinet (3), a main machine (4) and upper and lower rope clamps (5) are fixedly mounted on the elevator assembly (1), a controller (2) is arranged on the upper end of the control cabinet (3), a traction steel wire rope (7) on a main machine traction wheel (21) in the elevator assembly (1) is connected to a counterweight (8) and a car (9) at both ends, one end of the traction steel wire rope (7) is fixedly connected to the counterweight (8) through the upper and lower rope clamps (5) and a guide wheel (6), and the other end is fixedly connected to the car (9), and an intelligent torque sensor is arranged in the main machine (4).

2. A safe operation elevator according to claim 1, characterized in that: The host (4) comprises a host body (28), a stator (29) is arranged in the host body (28), a brake wheel (20) is rotatably connected in the host body (28), a magnetic steel (30) is arranged on the brake wheel (20), the stator (29) and the magnetic steel (30) are magnetically connected, the brake wheel (20) is fixedly connected to a piezoelectric crystal (22) in the intelligent torque sensor, and a ratchet (23) in the intelligent torque sensor is fixedly connected to the host traction wheel (21), and the piezoelectric crystal (22) is connected to the motor shaft (21) through the brake wheel (20). 25), the main engine traction wheel (21) is rotatably connected to the motor shaft (25) through a ratchet (23) in the intelligent torque sensor, the main engine traction wheel (21) is transmission-connected to the traction wire rope (7), an end cover (32) and a pressure cover (33) are provided at the end of the main engine base body (28), an intelligent torque sensor wiring device (27) is provided in the main engine base body (28), the wiring device (27) and the ball friction electrical slip ring (24) are both electrically connected to the controller (2), and the intelligent torque sensor is electrically connected to the controller (2); The intelligent torque sensor comprises a piezoelectric crystal (22), a brake wheel (20) and the piezoelectric crystal (22) are fixedly connected, the piezoelectric crystal (22) and the traction wheel ratchet (23) are clamped, the traction wheel ratchet (23) and the main engine traction wheel (21) are fixedly connected, and the piezoelectric crystal (22) is rotationally connected to the motor shaft (25) via a ball friction electrical slip ring (24).

3. A safe operation elevator according to claim 2, characterized in that: The main engine base (28) is provided with a brake and a brake state detection device (19) on both sides, the brake comprises a brake static plate (37) and a brake dynamic plate (38), the brake state detection device (19) is installed on the upper side of the brake, the brake state detection device (19) comprises a mechanical adjustment mechanism (34), the mechanical adjustment mechanism (34) is connected to the brake dynamic plate (38), the front end of the mechanical adjustment mechanism (34) is connected to an amplification mechanism (39) in a pressure sensor switch box (36), an electrical device (35) is provided on the pressure sensor switch box (36), and the pressure sensor switch box (36) is connected to the brake static plate (37); The brake state detection device (19) is provided with a pressure sensor, the pressure sensor comprising an elastic insulator (43) between the amplification mechanism (39) and the positive contact (40), an elastic insulator (43) between the positive contact (40) and the negative contact (41), the positive contact (40) being connected to one end of a light-emitting diode (42), and the other end of the light-emitting diode (42) being connected to the negative contact (41).

4. A safe operation elevator according to claim 1, characterized in that: The bidirectional speed limiter (10) on the elevator assembly (1) is rotatably connected to the speed limiter main shaft (11), a secondary encoder is provided on the speed limiter main shaft (11), the bidirectional speed limiter (10) is transmitted to one end of the speed limiter wire rope (12), and is connected to the car lifting device, and the other end of the speed limiter wire rope (12) passes through the speed limiter tensioning wheel (13) in the speed limiter tensioning device (14), and is fixedly connected to the car lifting device; The elevator assembly (1) is provided with two buffers (15) at the bottom of the hoistway, and the two buffers (15) are respectively located directly below the counterweight (8) and the car (9); The elevator assembly (1) is provided with a landing door (16) outside the hoistway. The landing door (16) is installed on the ground outside the door opening of the hoistway of the elevator assembly (1). The landing door (16) is provided with an intelligent door lock (17).

5. A power monitoring system, the power monitoring system is used to monitor the safe operation of the elevator according to any one of claims 1 to 4, characterized in that: The power monitoring system includes: a monitoring acquisition module, a monitoring center module and a monitoring feedback module; The monitoring and acquisition module is used to collect data information for safe operation of the elevator to obtain monitoring and acquisition data information; The monitoring center module is used to monitor and analyze the brake and traction capacity according to the monitoring and collected data information to obtain the monitoring and analysis results; The monitoring feedback module is used to perform control adjustment and fault reminder for the elevator according to the monitoring feedback module.

6. The power monitoring system according to claim 5, characterized in that: The monitoring center module performs brake monitoring and analysis based on the monitoring and collected data information, including: judging whether the host is operating normally based on the monitoring and collected data information; when the host is operating normally, using a virtual host to perform edge computing and comparison on the brake, analyzing whether the brake is released or braked normally, and obtaining a first analysis and judgment result; when the first analysis and judgment result is that the brake is not released or braked normally, determining the control information of the brake, and simultaneously providing a fault maintenance reminder; when the first analysis and judgment result is that the brake is released or braked normally, analyzing whether the switch pressure of the pressure sensor switch box meets the requirements of the switch pressure threshold based on the first analysis and judgment result, and obtaining a second analysis and judgment result; and analyzing whether the sensor working torque of the intelligent torque sensor meets the torque value control range, and obtaining a third analysis and judgment result; determining whether the brake is normal according to the second and third analysis and judgment results, and obtaining a fourth analysis and judgment result, and determining the control information of the brake according to the fourth judgment result, and simultaneously providing a fault maintenance reminder.

7. The power monitoring system according to claim 6, characterized in that: The monitoring center module performs traction capacity monitoring and analysis based on the monitoring and collected data information, including: determining the load of the car based on the car monitoring and collected data, obtaining the current load of the car, and judging whether the car is overloaded based on the current load of the car. When the car is not overloaded, the virtual host is used to perform edge calculation and comparison on the brake, and the running state and speed of the car are analyzed based on the monitoring and collected data to obtain the car state and car speed, and judging whether the car continues to run after reaching the upper and lower terminal stations based on the car state to obtain the fifth analysis and judgment result, and judging whether the car is overspeeding based on the car speed to obtain the sixth Analyze and judge the results, and then determine whether the brake is normal according to the fifth and sixth analysis and judgment results, and obtain the seventh analysis and judgment result, and determine the control information of the brake according to the seventh analysis and judgment result, and at the same time, give a fault maintenance reminder; when the car is overloaded, use the virtual host to perform edge calculation and comparison on the brake, analyze whether the elevator has a sliding phenomenon, and obtain the eighth analysis and judgment result, and determine whether the brake is normal according to the eighth analysis and judgment result, and obtain the ninth analysis and judgment result, and determine the control information of the brake according to the ninth analysis and judgment result, and at the same time, give a fault maintenance reminder.

8. The power monitoring system according to claim 7, characterized in that: The monitoring feedback module includes: an instruction feedback unit and a reminder feedback unit; The command feedback unit is used to determine the brake control command according to the brake control information combined with the type of safe operation elevator, and send the brake control command to the elevator host; The reminder feedback unit is used to generate information for fault repair reminder, and feed back the generated fault repair information to the safe operation elevator to perform fault repair reminder.

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