Monitoring method and monitoring device of mine hoist and monitoring system of mine hoist

Abstract

The invention provides a monitoring method and device for a mine hoist and a monitoring system for the mine hoist. The monitoring method comprises the steps that operation condition data of the mine hoist are obtained; according to the operation condition data, multi-angle analysis is carried out, corresponding analysis results are obtained, and the analysis results at least comprise one of the following results: the mine hoist is in a normal state, motor temperature rise of the mine hoist is abnormal, a brake shoe of the mine hoist is excessively worn, and the mine hoist has an aging risk; and executing corresponding countermeasures on the mine hoist according to the analysis results. The problem of low monitoring and early warning efficiency of the mine hoist due to lack of comprehensive monitoring of motor analysis, brake shoe clearance analysis, key point monitoring of an electric control system and environment monitoring in the mine hoist in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of mine hoists, and in particular to a monitoring method, a monitoring device, a computer-readable storage medium and a mine hoist monitoring system for a mine hoist. Background Art

[0002] Intelligent monitoring of mine hoists is an effective means of monitoring the entire mine shaft hoisting system, including electrical and hydraulic parts. The two mainstream types of hoists are: winding hoists and friction hoists, with friction hoists being the main type at present. There are two types of hoist electronic control: DC electric control system and AC electric control system (AC is specifically divided into: AC-AC frequency conversion and AC-DC-AC frequency conversion, etc.). Early intelligent monitoring of hoists was basically a DC (or AC) electric control system + backup protection system mode, with a single form. Whether it is the electric control system itself or the backup protection system, the intelligent monitoring of the hoist (such as: system networking, diagnostic trend analysis, early prediction of faults, and intelligent analysis) is almost zero. This model can only meet the basic needs of the shaft hoisting conditions at that time.

[0003] Later, with the development of power electronics technology, automation technology and Internet technology, especially the development of large-scale integrated circuits and computer control technology, there are more and more means of intelligent monitoring of hoists, especially the hoisting machine electronic control system itself integrates the function of the backup protection system, and the function of the hoisting machine electronic control system has been improved, and this form of application has been applied to this day. However, the existing hoisting machine monitoring lacks motor intelligent analysis (temperature rise and vibration), gate gap depth analysis, key points of the electronic control system (such as wireless temperature measurement at the power cable joint) monitoring and environmental monitoring, and there is no data analysis of the above types and the operation stage of the hoisting electronic control system, the data analysis of the real-time parameters of the inverter (such as current, voltage and power factor), such as cause and effect, trend judgment, etc. Summary of the invention

[0004] The main purpose of the present application is to provide a monitoring method, a monitoring device, a computer-readable storage medium and a mine hoist monitoring system for a mine hoist, so as to at least solve the problem in the prior art of lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the mine hoist, resulting in low monitoring and early warning efficiency of the mine hoist.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a monitoring method for a mine hoist is provided, comprising: obtaining operating condition data of the mine hoist, the operating condition data at least including motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least including motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; performing multi-angle analysis according to the operating condition data to obtain corresponding analysis results, the multi-angle analysis comprising at least one of the following: motor analysis, brake shoe clearance depth analysis, environmental monitoring analysis and temperature rise monitoring analysis of key points of the electric control system, the motor analysis is The operating status of the motor of the mine hoist is analyzed according to the motor data, the brake shoe gap depth analysis is to analyze the brake shoe wear status of the mine hoist according to the brake shoe gap, the environmental monitoring analysis is to analyze the equipment status of the mine hoist according to the operating environment data, and the key point temperature rise monitoring analysis of the electric control system is to perform a temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis results include at least one of the following: the mine hoist is in a normal state, the temperature rise of the motor of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; corresponding countermeasures are executed on the mine hoist according to each of the analysis results.

[0006] Optionally, the multi-angle analysis includes the motor analysis, and a multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, which at least include: generating an armature current curve diagram according to the current data in the motor data, and generating a speed curve diagram according to the speed data; when the operating state of the mine hoist is a no-load state, the current operating current of the mine hoist is compared with a first set operating current upper limit value, and the operating state at least includes a heavy object lifting state, a heavy object lowering state and the no-load state, and the no-load state includes an empty car lifting state and an empty car lowering state; when the current operating current is greater than the set operating current upper limit value In the case where the current operating current is less than or equal to the set operating current upper limit value, it is determined that the analysis result of the motor analysis is that the operating current of the mine hoist is normal; when the operating state of the mine hoist is the heavy object lifting state, the armature current curve diagram is compared with the historical armature current curve diagram, and the speed curve diagram is compared with the historical speed curve diagram, and the historical armature current curve diagram is the an armature current curve graph generated by the mine hoist when it was in the weight lifting state last time, and the historical speed curve graph is a speed curve graph generated by the mine hoist when it was in the weight lifting state last time; when the difference between the armature current curve graph and the historical armature current curve graph is greater than a first difference threshold and / or the difference between the speed curve graph and the historical speed curve graph is greater than a second difference threshold, it is determined that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal; when the difference between the armature current curve graph and the historical armature current curve graph is less than or equal to the first difference threshold and / or the speed When the difference between the curve graph and the historical speed curve graph is less than or equal to the second difference threshold, the analysis result of the motor analysis is determined to be that the motor temperature rise of the mine hoist is normal; when the operating state of the mine hoist is the heavy object lifting state, the thermal imaging data is compared with the set temperature rise threshold; when the thermal imaging data is greater than the set temperature rise threshold, the analysis result of the motor analysis is determined to be that the motor temperature rise of the mine hoist is abnormal; when the thermal imaging data is less than or equal to the set temperature rise threshold, the analysis result of the motor analysis is determined to be that the motor temperature rise of the mine hoist is normal.

[0007] Optionally, the multi-angle analysis includes the motor analysis, and the multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, and also includes: comparing the vibration data with the vibration setting value, the vibration setting value including an upper limit vibration setting value and a lower limit vibration setting value; when the vibration data is greater than the upper limit vibration setting value and / or the vibration data is less than the lower limit vibration setting value, judging that the analysis result of the motor analysis is that the motor vibration amplitude is abnormal; when the vibration data is less than or equal to the upper limit vibration setting value and / or the vibration data is greater than or equal to the lower limit vibration setting value, judging that the analysis result of the motor analysis is that the motor vibration amplitude is normal.

[0008] Optionally, the multi-angle analysis includes the brake shoe gap depth analysis, and a multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: comparing the brake shoe gap with a brake shoe gap curve graph, the brake shoe gap curve graph is a curve graph generated according to historical brake shoe gap data, and an upper interval envelope and a lower interval envelope are set in the brake shoe gap curve graph; when the brake shoe gap is greater than or equal to the upper interval envelope or the brake shoe gap is less than or equal to the lower interval envelope, it is determined that the analysis result corresponding to the brake shoe gap depth analysis is that the brake shoe of the mine hoist is excessively worn; when the brake shoe gap is less than the upper interval envelope and the brake shoe gap is greater than the lower interval envelope, it is determined that the analysis result corresponding to the brake shoe gap depth analysis is that the brake shoe of the mine hoist is not excessively worn.

[0009] Optionally, the operating environment data includes humidity, temperature, smoke concentration and noise data, and the multi-angle analysis includes the environmental monitoring analysis. The multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: comparing the humidity, temperature, smoke concentration and noise data in the operating environment data with corresponding set thresholds; when any one of the operating environment data is greater than or equal to the set threshold, judging that the analysis result of the environmental monitoring analysis is that the mine hoist is subject to environmental impact or the mine hoist is subject to aging risk; when the operating environment data are all less than the set threshold, judging that the analysis result of the environmental monitoring analysis is that the mine hoist is not currently subject to environmental impact and the mine hoist is not subject to the aging risk.

[0010] Optionally, the multi-angle analysis includes temperature rise monitoring and analysis of key points of the electric control system, and multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: comparing the temperature rise data with the set maximum temperature rise limit; when the temperature rise data is greater than the set maximum temperature rise limit, determining that the analysis result of the temperature rise monitoring and analysis of key points of the electric control system is that the temperature rise of the key part of the electric control system of the mine hoist is in an abnormal state, and the key part of the electric control system at least includes the power cable joint of the electric control system; when the temperature rise data is less than or equal to the set maximum temperature rise limit, determining that the analysis result of the temperature rise monitoring and analysis of key points of the electric control system is that the temperature rise of the key part of the electric control system is in a normal state.

[0011] Optionally, before executing corresponding countermeasures on the mine hoist according to each of the analysis results, the method also includes: generating a thermal imaging display image based on the temperature rise data of each equipment in the mine hoist; determining the location of the heat-generating equipment based on the thermal imaging display image, so as to repair or replace the heat-generating equipment.

[0012] According to another aspect of the present application, a monitoring device for a mine hoist is provided, the device comprising: an acquisition unit, for acquiring operating condition data of the mine hoist, the operating condition data comprising at least motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data comprising at least motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance being a distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; an analysis unit, for performing multi-angle analysis according to the operating condition data to obtain corresponding analysis results, the multi-angle analysis comprising at least one of the following: motor analysis, brake shoe clearance depth analysis, environmental monitoring analysis and temperature rise monitoring analysis of key points of the electric control system, the motor analysis The analysis is to analyze the operating status of the motor of the mine hoist according to the motor data, the brake shoe gap depth analysis is to analyze the brake shoe wear status of the mine hoist according to the brake shoe gap, the environmental monitoring analysis is to analyze the equipment status of the mine hoist according to the operating environment data, and the key point temperature rise monitoring analysis of the electric control system is to perform a temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis result includes at least one of the following: the mine hoist is in a normal state, the temperature rise of the motor of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; an execution unit is used to execute corresponding countermeasures for the mine hoist according to each of the analysis results.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described.

[0014] According to another aspect of the present application, a mine hoist monitoring system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the described methods.

[0015] Applying the technical solution of the present application, in a monitoring method for a mine hoist, the method includes: first, obtaining the operating condition data of the mine hoist, the operating condition data at least including motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least including motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; then, performing multi-angle analysis based on the operating condition data to obtain corresponding analysis results, the multi-angle analysis including at least one of the following: motor analysis, brake shoe clearance depth analysis, environmental monitoring analysis and temperature rise monitoring analysis of key points of the electric control system, the motor analysis is based on the above The motor data is used to analyze the operating status of the motor of the above-mentioned mine hoist, the above-mentioned brake shoe gap depth analysis is used to analyze the brake shoe wear status of the above-mentioned mine hoist according to the above-mentioned brake shoe gap, the above-mentioned environmental monitoring analysis is used to analyze the equipment status of the above-mentioned mine hoist according to the above-mentioned operating environment data, and the above-mentioned temperature rise monitoring analysis of key points of the electric control system is used to perform a temperature rise analysis on the electric control system of the above-mentioned mine hoist according to the above-mentioned temperature rise data. The above-mentioned analysis results include at least one of the following: the above-mentioned mine hoist is in a normal state, the temperature rise of the motor of the above-mentioned mine hoist is abnormal, the brake shoe of the above-mentioned mine hoist is excessively worn, and the above-mentioned mine hoist is at risk of aging; finally, corresponding countermeasures are implemented for the above-mentioned mine hoist according to each of the above-mentioned analysis results. This application considers the intelligent analysis of the motor in the hoisting system (temperature rise and vibration), the depth analysis of the brake shoe gap, the key point monitoring of the electric control system (such as wireless temperature measurement of power cable overlap) and environmental monitoring, and combines the speed closed-loop control, power factor control, vector control of frequency conversion, current closed-loop control, fault diagnosis, etc. of the electric control itself into a whole, performs trend judgment, early prediction of faults, intelligent analysis, and executes corresponding treatment measures when abnormal problems are found in the mine hoist. This application solves the problem of low monitoring and early warning efficiency of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for executing a method for monitoring a mine hoist provided in an embodiment of the present application is shown;

[0017] Figure 2 A schematic flow chart of a method for monitoring a mine hoist provided according to an embodiment of the present application is shown;

[0018] Figure 3 A schematic structural diagram of a mine hoist monitoring system provided according to an embodiment of the present application is shown;

[0019] Figure 4 A speed diagram of a mine hoist provided according to an embodiment of the present application is shown;

[0020] Figure 5 A schematic diagram showing a four-quadrant operating state of a mine hoist provided according to an embodiment of the present application is shown;

[0021] Figure 6 A thermal imaging display diagram of a mine hoist provided according to an embodiment of the present application is shown;

[0022] Figure 7 A structural block diagram of a monitoring device for a mine hoist provided according to an embodiment of the present application is shown.

[0023] The above drawings include the following reference numerals:

[0024] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] As introduced in the background technology, the existing hoist monitoring in the prior art lacks motor intelligent analysis (temperature rise and vibration), gate gap depth analysis, key point monitoring of the electric control system (such as wireless temperature measurement at the power cable joint) and environmental monitoring, and there is no data analysis of the above types of data and the operating stage of the hoisting electric control system, and data analysis of the real-time parameters of the inverter (such as current, voltage and power factor), such as cause and effect, trend judgment, etc. In order to solve the problem of low monitoring and early warning efficiency of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art, the embodiments of the present application provide a monitoring method, a monitoring device, a computer-readable storage medium and a mine hoist monitoring system for a mine hoist.

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 FIG. 1 is a hardware structure block diagram of a mobile terminal of a method for monitoring a mine hoist according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0031] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the monitoring method of the mine hoist in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The specific example of the above-mentioned network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0032] In this embodiment, a method for monitoring a mine hoist running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0033] Figure 2 1 is a flow chart of a method for monitoring a mine hoist according to an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0034] Step S201, obtaining the operating condition data of the mine hoist, the operating condition data at least including motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least including motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range;

[0035] Specifically, the intelligent monitoring system of mine hoist is as follows: Figure 3As shown, a thermal imaging AI camera is installed on the motor side, and the motor current, torque, speed, vibration, cooling fan exhaust volume and other data are collected through the inverter (the inverter is installed in the winch hoisting electric control room. Note: The winch room has a special electric control room, which is generally near the main drum). The collected data are displayed on the host computer.

[0036] Step S202, performing multi-angle analysis according to the above-mentioned operating condition data to obtain corresponding analysis results, the above-mentioned multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis and electric control system key point temperature rise monitoring analysis, the above-mentioned motor analysis is to analyze the operating state of the motor of the above-mentioned mine hoist according to the above-mentioned motor data, the above-mentioned brake shoe gap depth analysis is to analyze the brake shoe wear state of the above-mentioned mine hoist according to the above-mentioned brake shoe gap, the above-mentioned environmental monitoring analysis is to analyze the equipment state of the above-mentioned mine hoist according to the above-mentioned operating environment data, the above-mentioned electric control system key point temperature rise monitoring analysis is to perform temperature rise analysis on the electric control system of the above-mentioned mine hoist according to the above-mentioned temperature rise data, and the above-mentioned analysis results include at least one of the following: the above-mentioned mine hoist is in a normal state, the temperature rise of the motor of the above-mentioned mine hoist is abnormal, the brake shoe of the above-mentioned mine hoist is excessively worn, and the above-mentioned mine hoist is at risk of aging;

[0037] Specifically, the above motor analysis is based on Figure 3 The motor analysis system in the above can be used to analyze the motor's operating status based on the above motor data. It is necessary to observe the motor's operating current and check whether it is overloaded or underloaded. In addition, attention should be paid to the motor's operating temperature. If the temperature is abnormally high, it may indicate that the motor has heat dissipation problems or insulation aging. Figure 3 The brake subsystem in the brake shoe is realized. According to the above brake shoe gap data, the wear state of the brake shoe can be analyzed. It is necessary to measure the actual gap depth of the brake shoe and compare it with the standard gap depth to determine whether the brake shoe is excessively worn. If the brake shoe gap is too large, it may cause the hoist to brake insensitively or reduce the braking effect, posing a safety hazard. Environmental monitoring analysis is performed by Figure 3 The intelligent environmental monitoring module in the control system can be used to analyze whether the working environment of the equipment meets the requirements based on the above operating environment data. It is necessary to check whether the temperature, humidity, dust and other environmental factors around the equipment are within the allowable range to ensure the normal operation of the equipment. If the environmental conditions are poor, the performance and life of the equipment may be affected. The temperature rise monitoring and analysis of the key points of the electric control system is carried out by Figure 3The wireless temperature measurement subsystem in the system can be used to analyze the temperature rise of the electric control system based on the above temperature rise data. It is necessary to monitor the temperature changes of each component of the electric control system to determine whether there is overheating. If the temperature rise of the electric control system is abnormal, it may cause problems such as circuit short circuit and equipment damage, and timely maintenance measures need to be taken. Based on the above analysis results, a comprehensive evaluation of the mine hoist can be obtained. If the mine hoist is in normal condition, it can continue to monitor and maintain the normal operation of the equipment; if there is an abnormal situation, timely inspection and maintenance are required to ensure the safe and reliable operation of the equipment.

[0038] It should also be noted that the mine hoist intelligent monitoring system also includes an intelligent transformation module, a video intelligent monitoring module, a spare parts management subsystem and a personnel management subsystem.

[0039] The intelligent transformation includes the electric transformation of the tank curtain door, the decoration inside the tank (stainless steel plate decoration inside the tank, lighting, music), the installation of the operation and display device, the installation of the camera, the installation of the wireless charging system, and the laying of wireless communication in the tank channel. The tank curtain door of the cage is transformed into an electric control mode to meet the function of automatic opening of the electric tank curtain door when the cradle falls and automatic closing of the electric tank curtain door when the cradle rises; the electric tank curtain door control system has a hardware connection interface for docking with the hoist electronic control system or the vehicle operation system. At the same time, the tank curtain door is equipped with an emergency opening device to facilitate manual emergency opening and closing under fault conditions. An operation and display device is set in the tank, which can display the current running depth, speed, dot signal and other information of the cage in real time. At the same time, the operation and display device is equipped with function buttons such as destination layer selection, emergency stop, opening and closing of the tank curtain door (locked with the hoist arrival signal), which is convenient for the tank passengers to operate independently. The main equipment of the wireless charging system includes: rechargeable batteries, wireless charging host, slave, communication host, wireless charging electromagnetic induction board, etc.

[0040] The main equipment of the video intelligent monitoring module: camera, hard disk recorder; install a thermal imaging hemispherical camera at the motor to monitor the temperature of the motor excitation and armature winding in real time online; install an intelligent capture camera + coal pile sensor at the unloading point grate to support cross-border detection, regional intrusion detection, entry / exit area detection, and rapid motion detection for detection, tracking, and capture. Install a high-definition camera at the hoist sheave (guide wheel) platform to illuminate the working conditions on both sides of the sheave. Use a camera with fault tracking function. According to the alarm area of ​​the system, the camera will automatically track and locate, and display a separate video of the fault area. Set up a high-definition AI function camera in the cage, connect to the ground recorder and monitor through the tank channel wireless network, and observe the impact in the cage at any time and record it. At the same time, the AI ​​camera identifies the personnel in the tank, counts the personnel in the tank, and sets the automatic alarm linkage function. The monitor is installed in the electric control room in a wall-mounted manner. When the operator operates the lifting system, he can monitor the working condition video of the site in real time through video images.

[0041] The spare parts management subsystem uses ultra-high radio frequency technology to monitor the management of equipment in real time, including the number, model, replacement records of spare parts and maintenance of key components. It can realize long-distance rapid inventory of spare parts, synchronize data with the background in real time, and improve the efficiency of inventory and warehousing. Bind hardware information with asset information (asset number, asset name, model, department, asset type, etc.) and enter them into the system database, and manage the controlled assets in terms of query, use, movement, maintenance, inventory, return, and scrapping.

[0042] The personnel management subsystem installs a video intercom device in the garage to remotely identify and control personnel entering and leaving the garage. The 10-inch face recognition door machine is designed with a metal frame, tempered glass panel, and touch screen buttons; it uses a 200W high-definition surveillance-level camera with a 120-degree ultra-wide-angle lens, which can be used as a security monitoring point for 7*24 all-weather preview and recording; the device uses a deep learning algorithm, supports a 10,000 face library, recognition distance: 0.3-2m, face comparison time ≤0.5s / person, face verification accuracy ≥99%, supports mobile phone photo and video anti-counterfeiting, fast recognition speed, and high accuracy; intercom function, supports two-way intercom with the indoor unit or central management machine; supports configuration of one-button call indoor unit function; access control function, can directly control the electric lock to realize access control management; supports face recognition with masks and detection of no masks (voice, text reminders).

[0043] Step S203: executing corresponding countermeasures on the mine hoist according to the above analysis results.

[0044] Specifically, when the above analysis result shows that the mine hoist is in a normal state, it means that there is no problem with the mine hoist at this time, and no measures need to be taken to operate normally; when the above analysis result shows that the motor temperature rise of the mine hoist is abnormal, the above countermeasure is to immediately issue a stop command to stop the operation of the mine hoist, and it may be necessary to shut down for inspection or replace motor parts; when the above analysis result shows that the brake shoe of the mine hoist is excessively worn, the above countermeasure is to replace the brake shoe or maintain the brake shoe; when the above analysis result shows that the mine hoist has an aging risk, the above countermeasure is to update the equipment of the mine hoist or increase the maintenance frequency of the mine hoist. Take appropriate measures in a timely manner after discovering the problem to ensure the safe operation and equipment maintenance of the mine hoist.

[0045] In this embodiment, first, the operating condition data of the mine hoist is obtained, and the above-mentioned operating condition data at least includes motor data, brake shoe clearance, operating environment data and temperature rise data. The above-mentioned motor data at least includes motor current data, torque data, speed data, vibration data and thermal imaging data. The above-mentioned brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the above-mentioned mine hoist within a set time range; then, multi-angle analysis is performed based on the above-mentioned operating condition data to obtain corresponding analysis results, and the above-mentioned multi-angle analysis includes at least one of the following: motor analysis, brake shoe clearance depth analysis, environmental monitoring analysis and temperature rise monitoring analysis of key points of the electric control system. The above-mentioned motor analysis is to monitor the above-mentioned mine hoist according to the above-mentioned motor data. The operating status of the motor of the mine hoist is analyzed, the brake shoe clearance depth analysis is to analyze the brake shoe wear status of the mine hoist according to the brake shoe clearance, the environmental monitoring analysis is to analyze the equipment status of the mine hoist according to the operating environment data, the key point temperature rise monitoring analysis of the electric control system is to perform a temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis results include at least one of the following: the mine hoist is in a normal state, the motor temperature rise of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; finally, corresponding countermeasures are executed on the mine hoist according to the above analysis results. This application considers the intelligent analysis of the motor in the hoisting system (temperature rise and vibration), the depth analysis of the brake shoe gap, the key point monitoring of the electric control system (such as wireless temperature measurement of power cable overlap) and environmental monitoring, and combines the speed closed-loop control, power factor control, vector control of frequency conversion, current closed-loop control, fault diagnosis, etc. of the electric control itself into a whole, performs trend judgment, early prediction of faults, intelligent analysis, and executes corresponding treatment measures when abnormal problems are found in the mine hoist. This application solves the problem of low monitoring and early warning efficiency of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art.

[0046] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the method for monitoring a mine hoist of the present application will be described in detail below in conjunction with specific embodiments.

[0047] In order to comprehensively analyze the motor of the mine hoist to improve the operation safety, in an optional implementation manner, the multi-angle analysis includes the motor analysis, and the step S202 at least includes:

[0048] Step S300, generating an armature current curve graph according to the current data in the motor data, and generating a speed curve graph according to the speed data;

[0049] Step S301, when the operating state of the mine hoist is an empty state, the current operating current of the mine hoist is compared with a first set operating current upper limit value, the operating state at least includes a heavy object lifting state, a heavy object lowering state and the empty state, and the empty state includes an empty car lifting state and an empty car lowering state;

[0050] Step S302, when the current operating current is greater than the set operating current upper limit, determining that the analysis result of the motor analysis is that the operating current of the mine hoist is abnormal, and the first set operating current upper limit is the operating current upper limit set for the mine hoist in a no-load state;

[0051] Step S303, when the current operating current is less than or equal to the set operating current upper limit, determining that the analysis result of the motor analysis is that the operating current of the mine hoist is normal;

[0052] Step S304, when the operation state of the mine hoist is the weight lifting state, the armature current curve diagram is compared with the historical armature current curve diagram, and the speed curve diagram is compared with the historical speed curve diagram, the historical armature current curve diagram is the armature current curve diagram generated when the mine hoist was in the weight lifting state last time, and the historical speed curve diagram is the speed curve diagram generated when the mine hoist was in the weight lifting state last time;

[0053] Step S305, when the difference between the armature current curve graph and the historical armature current curve graph is greater than a first difference threshold and / or the difference between the speed curve graph and the historical speed curve graph is greater than a second difference threshold, determining that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal;

[0054] Step S306, when the difference between the armature current curve graph and the historical armature current curve graph is less than or equal to the first difference threshold and / or the difference between the speed curve graph and the historical speed curve graph is less than or equal to the second difference threshold, determining that the analysis result of the motor analysis is that the motor temperature rise of the mine hoist is normal;

[0055] Step S307, when the operating state of the mine hoist is the heavy object lifting state, comparing the thermal imaging data with a set temperature rise threshold;

[0056] Step S308, when the temperature of the thermal imaging data is greater than the set temperature rise threshold, determining that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal;

[0057] Step S309, when the temperature rise of the motor is less than or equal to the set temperature rise threshold value according to the thermal imaging data, determining that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is normal.

[0058] In the above embodiment, in the first case, the operating state of the above mine hoist is the no-load state. The lifting direction is displayed on the upper computer screen, and there are two states: empty car lifting and empty car lowering (the empty car lifting and empty car lowering of the hoist are basically small loads, and the running current of the motor is relatively small. It can be determined by the armature current diagram. It can be seen that the approximate value of the running current of the hoist is generally about tens of amperes under no-load conditions. Therefore, when the load is heavy, the armature current will be relatively large (usually about 3000A), and when the load is light, the armature current will be very small. The magnetic field current is generally constant. Value is not considered as an indicator of load size. The value of the armature current is obtained by adding a transformer to the output end of the inverter, that is, if the armature current value exceeds the set upper limit of the operating current in the no-load state, it means that the operating current is abnormal at this time, but the specific reason needs to be investigated later, so a prompt message can be issued first to prompt; if the armature current value does not exceed the set upper limit of the operating current in the no-load state, the operating current is small, and the corresponding temperature rise fluctuation is small, and only the temperature rise record comparison is required. The second case is that the operating state of the above-mentioned mine hoist is the above-mentioned heavy object lifting state: compare through the current curve ( Figure 4 From the speed diagram, we can calculate that the time required for the hoist to lift one hook is about 140.9 seconds. Figure 4 It can be seen that within this 140.9 seconds, the real-time speed of the hoist per second. The current graph can reflect the real-time current of the hoist per second within 140.9 seconds of hoisting. The speed graph and current Figure 1Generally, it will be saved for 15 days. If the maximum load of the designed mine hoist is 20 tons, and according to the monitoring, the maximum operating current of the mine hoist is 3000A, then it can be concluded that the armature current diagram of the mine hoist cannot exceed 3000A during normal operation, because the relationship between current and load weight depends not only on the working state of the circuit, but also on the design of the circuit and the electrical characteristics of the load. When the load weight increases, the power of the circuit will also increase, resulting in changes in current. If the inverter fails, or the motor fails, at a certain moment, it is found that there is a large difference between the armature current diagram or speed diagram of the front and rear hooks. At this time, it is necessary to stop the car for inspection. In this case, the speed diagram and current diagram are the most intuitive form of judging whether the mine hoist has failed. Once an abnormality is detected, a stop command is immediately issued to the electronic control system. The third situation is when the operating state of the above-mentioned mine hoist is the above-mentioned heavy object lifting state: This situation is opposite to the working condition of the second situation. The inverter or inverter needs to produce a reaction force, which belongs to the four-quadrant operating state, that is, the hoist reverses, the hoist produces a negative force, and the motor belongs to the power generation braking state. (For a motor, quadrants I and III are easy to understand, that is, forward and reverse rotation. Quadrant II is braking during forward rotation, and quadrant IV is braking during reverse rotation. When a motor performs reciprocating motion, it will perform in these four quadrants in turn, such as Figure 5 As shown, when both N and M are positive, it is the I quadrant, and the motor is running in the forward direction; when M is positive and N is negative, it is the II quadrant, in the generator state, and outputs positive current; when both N and M are negative, it is the III quadrant, and the motor is running in the reverse direction; when N is negative and M is positive, it is the IV quadrant, in the generator state, and outputs negative current. Due to load reasons, the output current of the inverter (or rectifier) ​​is also relatively large, and the running current of the motor (the output current of the inverter is the running current of the motor, and the two are consistent) is relatively high, and the corresponding temperature rise is very fast. Long-term operation at high temperatures affects the insulation of the motor, thereby affecting the life of the motor. Large temperature rise fluctuations are also key monitoring conditions. It is necessary to monitor the temperature rise of the motor in real time through an AI camera, draw the motor temperature rise curve in real time, and retain the historical temperature rise data of the motor. Figure 3 The AI ​​thermal imaging data in the motor analysis system sets the maximum temperature limit, and the actual value is used to determine whether the motor temperature rise is normal.

[0059] It should be noted that the hoist system is currently divided into three stages according to the operating phase: starting and acceleration stage, uniform speed stage, and deceleration stage (all lifting methods have these three stages). For example, according to the load, there are four states: heavy lifting, heavy lifting; empty car lifting, empty car lifting (Note: starting and acceleration stage, uniform speed stage, deceleration stage, these three speed stages of hoist operation are generally designed by first designing a given speed diagram, and strictly according to the designed speed diagram, the mine hoist (mainly controlled by the controller in the mine hoist electronic control system, and the frequency converter in the electronic control system completes the drive of the mine hoist main motor) completes the operation of each hook, such as Figure 4 As shown, Figure 4 This is the speed curve of the mine hoist. There are three speed lines, namely the envelope line (Line 1), the given speed line (Line 2) and the measured speed line (Line 3). Among them, the given speed line (Line 2) is the designed speed line (given through PLC program writing, and the speed line, that is, the dynamically changing speed value, is given to the frequency converter to drive the motor to obtain a speed corresponding to this line). The measured speed line (Line 3) is the speed line of the drive motor measured by the encoder, which is basically consistent with the given speed line (Line 2). The envelope line (Line 1) has an upper and lower error of ±15% of the measured speed line, which is a protection line. The measured speed cannot exceed the envelope line. Note: Exceeding the envelope line means that the motor is out of control. Figure 4 According to the analysis, Vbn=7.28m / s represents the maximum speed limit specified by the envelope line, and the measured speed must not be greater than this speed. Vm=6.5m / s represents the actual maximum speed of the above-mentioned mine hoist. V1=0.3m / s represents the starting speed of the above-mentioned mine hoist in the above-mentioned starting and acceleration sections. V2=1.5m / s represents the final speed of the above-mentioned mine hoist in the starting and acceleration sections. Vp1=1.0m / s represents the final speed in the first deceleration section. Vp2=0.5m / s represents the final speed in the second deceleration section. Vp3=0.22m / s represents the final speed in the third deceleration section. The above-mentioned deceleration section includes multiple deceleration processes, namely the first deceleration section, the second deceleration section and the third deceleration section. The first deceleration section is the stage of deceleration from Vm=6.5m / s to Vp1=1.0m / s. a(m / s 2 ) represents acceleration, the unit is m / s 2 , S(m) represents the lifting distance of the mine hoist, the unit is m, t(s) represents the time, the unit is s.

[0060] In order to monitor the operating state of the electric control system from the perspective of motor vibration monitoring to improve the operating safety of the mine hoist, in an optional implementation, the multi-angle analysis includes the motor analysis, and the step S202 further includes:

[0061] Step S401, comparing the vibration data with a vibration setting value, wherein the vibration setting value includes an upper limit vibration setting value and a lower limit vibration setting value;

[0062] Step S402, when the vibration data is greater than the upper limit vibration setting value and / or the vibration data is less than the lower limit vibration setting value, determining that the analysis result of the motor analysis is that the motor vibration amplitude is abnormal;

[0063] Step S403, when the vibration data is less than or equal to the upper limit vibration setting value and / or the vibration data is greater than or equal to the lower limit vibration setting value, determining that the analysis result of the motor analysis is that the vibration amplitude of the motor is normal.

[0064] In the above embodiment, the magnitude of the motor vibration amplitude is generally related to the motor current and the harmonic content of the electric control, so the vibration monitoring of the motor also directly reflects the operating state of the electric control system (i.e., the equipment performance and aging degree of the electric control system), and the motor vibration data is also part of the system monitoring. Two vibration sensors are installed on the motor, one horizontal and one vertical, and the vibration value is collected through the PLC. The PLC control system sets the upper and lower alarm limits. When the collected signal is greater than the upper alarm limit setting value set by the host computer or less than the lower alarm limit setting value set by the host computer, the motor vibration amplitude is judged to be abnormal. The subsequent response measures are that the electric control system will issue a voice alarm and automatically choose whether to lock and protect the hoist system according to the specific alarm content. When the collected signal is less than or equal to the upper alarm limit setting value set by the host computer or greater than or equal to the lower alarm limit setting value set by the host computer, the motor vibration amplitude is judged to be normal.

[0065] In order to avoid brake accidents, in an optional implementation manner, the multi-angle analysis includes the brake shoe gap depth analysis, and the step S202 includes:

[0066] Step S501, comparing the brake shoe clearance with a brake shoe clearance curve graph, wherein the brake shoe clearance curve graph is a curve graph generated according to historical brake shoe clearance data, and an upper interval envelope and a lower interval envelope are set in the brake shoe clearance curve graph;

[0067] Step S502, when the brake shoe clearance is greater than or equal to the upper interval envelope or the brake shoe clearance is less than or equal to the lower interval envelope, determining that the analysis result corresponding to the brake shoe clearance depth analysis is that the brake shoe of the mine hoist has excessive wear;

[0068] Step S503, when the brake shoe clearance is smaller than the upper interval envelope and the brake shoe clearance is larger than the lower interval envelope, it is determined that the analysis result corresponding to the brake shoe clearance depth analysis is that the brake shoe of the mine hoist does not have excessive wear.

[0069] In the above embodiment, if Figure 3 As shown by Figure 3 The brake subsystem in the system performs a deep analysis of the brake shoe clearance. The system monitors the brake shoe clearance in real time and evaluates the brake shoe wear status through the change of the brake shoe clearance, specifically the change in the distance of the brake shoe clearance within a certain time range. At the same time, the comparison with the brake shoe wear history record is increased. Specifically, the brake shoe clearance curve is designed, and the curve generated by the brake shoe clearance data of the previous cycle is compared in real time (the hoist continuously completes a lifting operation and a lowering operation as a cycle), and the upper and lower interval envelopes are set. If the upper or lower interval envelopes are exceeded, an alarm or stop is performed according to the requirements to prevent the special working conditions of the lifting system from excessive wear of the brake shoe and avoid brake accidents.

[0070] In order to reduce the aging of the equipment itself and further ensure the safe operation of the mine hoist, in an optional implementation manner, the operating environment data includes humidity, temperature, smoke concentration and noise data, the multi-angle analysis includes the environmental monitoring analysis, and the step S202 includes:

[0071] Step S601, comparing the humidity, temperature, smoke concentration and noise data in the operating environment data with corresponding set thresholds;

[0072] Step S602, when any of the operating environment data is greater than or equal to the set threshold, determining that the analysis result of the environmental monitoring analysis is that the mine hoist has environmental impact or the mine hoist has aging risk;

[0073] Step S603, when the above operating environment data are all less than the above set threshold value, it is determined that the above analysis result of the above environmental monitoring analysis is that the above mine hoist currently has no environmental impact and the above mine hoist currently does not have the above aging risk.

[0074] In the above embodiment, environmental monitoring is also used as a supplementary means for the intelligent monitoring method of mine hoists. It collects monitoring data on the ambient temperature and humidity of the electronic control equipment, and in combination with the operating characteristics of the electronic control equipment, reminds maintenance personnel to control the temperature and humidity, thereby further ensuring the safety of the hoist operation. Since the electronic control system of the mine hoist operates under high load and high current conditions for a long time, the aging and insulation of the equipment itself are highly tested, so environmental monitoring of temperature and humidity is also indispensable. The temperature and humidity of environmental monitoring directly affect the condition of equipment use to a certain extent. At the same time, corresponding countermeasures should be taken in extreme temperature and humidity conditions. Humidity sensors, temperature sensors, smoke sensors, and noise sensors should be installed in key locations such as the transformer room, electronic control room, operating room, garage, and frequency conversion system. Figure 3 As shown by Figure 3 The environmental intelligent monitoring module in the system monitors the environmental parameters of key points in real time online. The sensor is wall-mounted and connected to the hoist detection PLC controller through hard wiring. The hoist intelligent monitoring system has voice, sound and light alarm functions and hoist system locking functions for all detection data. When a fault occurs on site, the host computer monitoring system (i.e., the hoist intelligent monitoring system) can broadcast the specific fault information of the system in real time. All alarm parameter values ​​(i.e., the above-mentioned set thresholds) can be set by the host computer without changing the underlying PLC control program. When the sensor measurement value is greater than ±10% (settable), a voice alarm is issued, and when the measurement value is greater than ±20% (settable), an sound and light alarm is issued to lock the mine hoist operation. The hoist intelligent monitoring system reserves 4 DO relay output channels to lock the hoisting electronic control system.

[0075] In order to perform temperature rise monitoring on key parts of the electric control system and further improve the status data of the electric control system, in an optional implementation manner, the multi-angle analysis includes the temperature rise monitoring analysis of key points of the electric control system, and the step S202 includes:

[0076] Step S70 1, comparing the above temperature rise data with the set maximum temperature rise limit;

[0077] Step S702, when the temperature rise data is greater than the set maximum temperature rise limit, determining that the analysis result of the temperature rise monitoring and analysis of the key points of the electric control system is that the temperature rise of the key part of the electric control system of the mine hoist is in an abnormal state, and the key part of the electric control system at least includes the power cable connection of the electric control system;

[0078] Step S703, when the temperature rise data is less than or equal to the set maximum temperature rise limit, determine that the analysis result of the temperature rise monitoring and analysis of the key points of the electric control system is that the temperature rise of the key part of the electric control system is in a normal state.

[0079] In the above embodiment, the temperature rise monitoring of the key parts of the electric control system uses wireless temperature measurement to monitor the temperature rise of the joints of the power cables of the electric control system, and incorporates the data into the intelligent monitoring platform to further improve the status data of the system. Figure 3 The wireless temperature measurement subsystem in the mine is used for monitoring). The hoist itself is a major equipment in the mine. The electric control system is generally under heavy load, with high operating voltage, large current and long operating time, which puts a high test on the insulation degree of each link in the system. Therefore, the temperature rise of the power cable joints must be monitored. The system sets a maximum temperature rise limit. Once the maximum value is exceeded, an alarm will be issued or the system will stop to prevent a fire. That is, if the maximum value is not exceeded, the temperature rise of the key part of the electric control system of the mine hoist is considered normal, and if the maximum value is exceeded, the temperature rise of the key part of the electric control system of the mine hoist is considered abnormal.

[0080] In order to monitor and analyze the temperature rise of the motor in real time to ensure the safe operation of the motor, in an optional implementation manner, before the above step S203, the method further includes:

[0081] Step S801, generating a thermal imaging display diagram according to the temperature rise data of each device in the mine hoist;

[0082] Step S802: determining the location of the heat generating device according to the thermal imaging display image, so as to repair or replace the heat generating device.

[0083] In the above embodiment, thermal imaging is recorded by a thermal imaging AI camera and transmitted to a host computer for display. The specific location of the heating device can be confirmed through the thermal imaging display so that the heating device can be repaired or replaced to ensure the safe operation of the motor. A thermal imaging AI camera is installed on the motor side, and the thermal imaging image is as follows: Figure 6 shown.

[0084] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0085] The embodiment of the present application also provides a monitoring device for a mine hoist. It should be noted that the monitoring device for a mine hoist in the embodiment of the present application can be used to execute the monitoring method for a mine hoist provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and those that have been described will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0086] The following is an introduction to the monitoring device for a mine hoist provided in an embodiment of the present application.

[0087] Figure 7 1 is a structural block diagram of a monitoring device for a mine hoist according to an embodiment of the present application. Figure 7 As shown, the device comprises:

[0088] The acquisition unit 10 is used to acquire the operating condition data of the mine hoist, wherein the operating condition data at least includes motor data, brake shoe clearance, operating environment data and temperature rise data, wherein the motor data at least includes motor current data, torque data, speed data, vibration data and thermal imaging data, and the brake shoe clearance is a distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range;

[0089] Specifically, the intelligent monitoring system of mine hoist is as follows: Figure 3 As shown, a thermal imaging AI camera is installed on the motor side, and the motor current, torque, speed, vibration, cooling fan exhaust volume and other data are collected through the inverter (the inverter is installed in the winch hoisting electric control room. Note: The winch room has a special electric control room, which is generally near the main drum). The collected data are displayed on the host computer.

[0090] The analysis unit 20 is used to perform multi-angle analysis according to the above-mentioned operating condition data to obtain corresponding analysis results, and the above-mentioned multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis and electric control system key point temperature rise monitoring analysis, the above-mentioned motor analysis is to analyze the operating state of the motor of the above-mentioned mine hoist according to the above-mentioned motor data, the above-mentioned brake shoe gap depth analysis is to analyze the brake shoe wear state of the above-mentioned mine hoist according to the above-mentioned brake shoe gap, the above-mentioned environmental monitoring analysis is to analyze the equipment state of the above-mentioned mine hoist according to the above-mentioned operating environment data, and the above-mentioned electric control system key point temperature rise monitoring analysis is to perform temperature rise analysis on the electric control system of the above-mentioned mine hoist according to the above-mentioned temperature rise data, and the above-mentioned analysis results include at least one of the following: the above-mentioned mine hoist is in a normal state, the temperature rise of the motor of the above-mentioned mine hoist is abnormal, the brake shoe of the above-mentioned mine hoist is excessively worn, and the above-mentioned mine hoist is at risk of aging;

[0091] Specifically, the above motor analysis is based on Figure 3 The motor analysis system in the above can be used to analyze the motor's operating status based on the above motor data. It is necessary to observe the motor's operating current and check whether it is overloaded or underloaded. In addition, attention should be paid to the motor's operating temperature. If the temperature is abnormally high, it may indicate that the motor has heat dissipation problems or insulation aging. Figure 3The brake subsystem in the brake shoe is realized. According to the above brake shoe gap data, the wear state of the brake shoe can be analyzed. It is necessary to measure the actual gap depth of the brake shoe and compare it with the standard gap depth to determine whether the brake shoe is excessively worn. If the brake shoe gap is too large, it may cause the hoist to brake insensitively or reduce the braking effect, posing a safety hazard. Environmental monitoring analysis is performed by Figure 3 The intelligent environmental monitoring module in the control system can be used to analyze whether the working environment of the equipment meets the requirements based on the above operating environment data. It is necessary to check whether the temperature, humidity, dust and other environmental factors around the equipment are within the allowable range to ensure the normal operation of the equipment. If the environmental conditions are poor, the performance and life of the equipment may be affected. The temperature rise monitoring and analysis of the key points of the electric control system is carried out by Figure 3 The wireless temperature measurement subsystem in the system can be used to analyze the temperature rise of the electric control system based on the above temperature rise data. It is necessary to monitor the temperature changes of each component of the electric control system to determine whether there is overheating. If the temperature rise of the electric control system is abnormal, it may cause problems such as circuit short circuit and equipment damage, and timely maintenance measures need to be taken. Based on the above analysis results, a comprehensive evaluation of the mine hoist can be obtained. If the mine hoist is in normal condition, it can continue to monitor and maintain the normal operation of the equipment; if there is an abnormal situation, timely inspection and maintenance are required to ensure the safe and reliable operation of the equipment.

[0092] The execution unit 30 is used to execute corresponding countermeasures on the above-mentioned mine hoist according to each of the above-mentioned analysis results.

[0093] Specifically, when the above analysis result shows that the mine hoist is in a normal state, it means that there is no problem with the mine hoist at this time, and no measures need to be taken to operate normally; when the above analysis result shows that the motor temperature rise of the mine hoist is abnormal, the above countermeasure is to immediately issue a stop command to stop the operation of the mine hoist, and it may be necessary to shut down for inspection or replace motor parts; when the above analysis result shows that the brake shoe of the mine hoist is excessively worn, the above countermeasure is to replace the brake shoe or maintain the brake shoe; when the above analysis result shows that the mine hoist has an aging risk, the above countermeasure is to update the equipment of the mine hoist or increase the maintenance frequency of the mine hoist. Take appropriate measures in a timely manner after discovering the problem to ensure the safe operation and equipment maintenance of the mine hoist.

[0094] In this embodiment, the acquisition unit is used to acquire the operating condition data of the mine hoist, the operating condition data at least includes motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least includes motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; the analysis unit is used to perform multi-angle analysis according to the operating condition data to obtain corresponding analysis results, the multi-angle analysis includes at least one of the following: motor analysis, brake shoe clearance depth analysis, environmental monitoring analysis and temperature rise monitoring analysis of key points of the electric control system, the motor analysis is to analyze the mine according to the motor data The operating status of the motor of the mine hoist is analyzed, the brake shoe gap depth analysis is to analyze the brake shoe wear status of the mine hoist according to the brake shoe gap, the environmental monitoring analysis is to analyze the equipment status of the mine hoist according to the operating environment data, the key point temperature rise monitoring analysis of the electric control system is to perform a temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis results include at least one of the following: the mine hoist is in a normal state, the motor temperature rise of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; an execution unit is used to execute corresponding countermeasures for the mine hoist according to each of the above analysis results. This application considers the intelligent analysis of the motor in the hoisting system (temperature rise and vibration), the depth analysis of the brake shoe gap, the key point monitoring of the electric control system (such as wireless temperature measurement of power cable overlap) and environmental monitoring, and combines the speed closed-loop control, power factor control, vector control of frequency conversion, current closed-loop control, fault diagnosis, etc. of the electric control itself into a whole, performs trend judgment, early prediction of faults, intelligent analysis, and executes corresponding treatment measures when abnormal problems are found in the mine hoist. This application solves the problem of low monitoring and early warning efficiency of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art.

[0095] In order to comprehensively analyze the motor of the mine hoist to improve the operational safety, in an optional implementation manner, the above-mentioned analysis unit at least includes:

[0096] A generating module, generating an armature current curve graph according to the current data in the motor data, and generating a speed curve graph according to the speed data;

[0097] A first comparison module, when the operating state of the mine hoist is an empty state, the current operating current of the mine hoist is compared with a first set operating current upper limit value, the operating state at least includes a heavy object lifting state, a heavy object lowering state and the empty state, and the empty state includes an empty car lifting state and an empty car lowering state;

[0098] A first determination module determines that the analysis result of the motor analysis is that the operating current of the mine hoist is abnormal when the current operating current is greater than the set operating current upper limit value, and the first set operating current upper limit value is the operating current upper limit value set for the mine hoist in a no-load state;

[0099] A second determination module determines that the analysis result of the motor analysis is that the operating current of the mine hoist is normal when the current operating current is less than or equal to the set operating current upper limit value;

[0100] a second comparison module, when the operation state of the mine hoist is the weight lifting state, comparing the armature current curve diagram with the historical armature current curve diagram, and comparing the speed curve diagram with the historical speed curve diagram, wherein the historical armature current curve diagram is the armature current curve diagram generated when the mine hoist was in the weight lifting state the last time, and the historical speed curve diagram is the speed curve diagram generated when the mine hoist was in the weight lifting state the last time;

[0101] A third determination module, when the difference between the armature current curve diagram and the historical armature current curve diagram is greater than a first difference threshold and / or the difference between the speed curve diagram and the historical speed curve diagram is greater than a second difference threshold, determines that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal;

[0102] A fourth determination module, when the difference between the armature current curve diagram and the historical armature current curve diagram is less than or equal to the first difference threshold and / or the difference between the speed curve diagram and the historical speed curve diagram is less than or equal to the second difference threshold, determines that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is normal;

[0103] A third comparison module compares the thermal imaging data with a set temperature rise threshold when the operating state of the mine hoist is the heavy object lifting state;

[0104] A fifth determination module, when the temperature of the thermal imaging data is greater than the set temperature rise threshold, determines that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal;

[0105] The sixth determination module determines that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is normal when the temperature of the thermal imaging data is less than or equal to the set temperature rise threshold.

[0106] In the above embodiment, the above multi-angle analysis includes the above motor analysis. In the first case, the operating state of the above mine hoist is the no-load state. The lifting direction is displayed on the upper computer screen. There are two states: empty car lifting and empty car lowering (the empty car lifting and empty car lowering of the hoist are basically small loads. The running current of the motor is relatively small. It can be determined by the armature current diagram. It can be seen that the approximate value of the running current of the hoist is generally about tens of amperes under no-load conditions. Therefore, when the load is heavy, the armature current will be relatively large (usually about 3000A). When the load is light, the armature current will be very small. Magnetic The field current is generally a constant value and is not considered as an indicator of load size. The value of the armature current is obtained by adding a transformer to the output end of the inverter. That is, if the armature current value exceeds the set upper limit of the operating current in the no-load state, it means that the operating current is abnormal at this time, but the specific cause needs to be investigated later, so a prompt message can be issued first to prompt; if the armature current value does not exceed the set upper limit of the operating current in the no-load state, the operating current is small, and the corresponding temperature rise fluctuation is small, and only the temperature rise record comparison is required. The second case is that the operating state of the above-mentioned mine hoist is the above-mentioned heavy object lifting state: compare through the current curve ( Figure 4 From the speed diagram, we can calculate that the time required for the hoist to lift one hook is about 140.9 seconds. Figure 4 It can be seen that within this 140.9 seconds, the real-time speed of the hoist per second. The current graph can reflect the real-time current of the hoist per second within 140.9 seconds of hoisting. The speed graph and current Figure 1Generally, it will be saved for 15 days. If the maximum load of the designed mine hoist is 20 tons, and according to the monitoring, the maximum operating current of the mine hoist is 3000A, then it can be concluded that the armature current diagram of the mine hoist cannot exceed 3000A during normal operation, because the relationship between current and load weight depends not only on the working state of the circuit, but also on the design of the circuit and the electrical characteristics of the load. When the load weight increases, the power of the circuit will also increase, resulting in changes in current. If the inverter fails, or the motor fails, at a certain moment, it is found that there is a large difference between the armature current diagram or speed diagram of the front and rear hooks. At this time, it is necessary to stop the car for inspection. In this case, the speed diagram and current diagram are the most intuitive form of judging whether the mine hoist has failed. Once an abnormality is detected, a stop command is immediately issued to the electronic control system. The third situation is when the operating state of the above-mentioned mine hoist is the above-mentioned heavy object lifting state: This situation is opposite to the working condition of the second situation. The inverter or inverter needs to produce a reaction force, which belongs to the four-quadrant operating state, that is, the hoist reverses, the hoist produces a negative force, and the motor belongs to the power generation braking state. (For a motor, quadrants I and III are easy to understand, that is, forward and reverse rotation. Quadrant II is braking during forward rotation, and quadrant IV is braking during reverse rotation. When a motor performs reciprocating motion, it will perform in these four quadrants in turn, such as Figure 5 As shown, when both N and M are positive, it is the I quadrant, and the motor is running in the forward direction; when M is positive and N is negative, it is the II quadrant, in the generator state, and outputs positive current; when both N and M are negative, it is the III quadrant, and the motor is running in the reverse direction; when N is negative and M is positive, it is the IV quadrant, in the generator state, and outputs negative current. Due to load reasons, the output current of the inverter (or rectifier) ​​is also relatively large, and the running current of the motor (the output current of the inverter is the running current of the motor, and the two are consistent) is relatively high, and the corresponding temperature rise is very fast. Long-term operation at high temperatures affects the insulation of the motor, thereby affecting the life of the motor. Large temperature rise fluctuations are also key monitoring conditions. It is necessary to monitor the temperature rise of the motor in real time through an AI camera, draw the motor temperature rise curve in real time, and retain the historical temperature rise data of the motor. Figure 3 The AI ​​thermal imaging data in the motor analysis system sets the maximum temperature limit, and the actual value is used to determine whether the motor temperature rise is normal.

[0107] In order to monitor the operating state of the electric control system from the perspective of motor vibration monitoring to improve the operating safety of the mine hoist, in an optional implementation, the multi-angle analysis includes the motor analysis, and the analysis unit further includes:

[0108] A fourth comparison module compares the vibration data with a vibration setting value, wherein the vibration setting value includes an upper limit vibration setting value and a lower limit vibration setting value;

[0109] A seventh determination module, when the vibration data is greater than the upper limit vibration setting value and / or the vibration data is less than the lower limit vibration setting value, determines that the analysis result of the motor analysis is that the motor vibration amplitude is abnormal;

[0110] The eighth determination module determines that the analysis result of the motor analysis is that the vibration amplitude of the motor is normal when the vibration data is less than or equal to the upper limit vibration setting value and / or the vibration data is greater than or equal to the lower limit vibration setting value.

[0111] In the above embodiment, the magnitude of the motor vibration amplitude is generally related to the motor current and the harmonic content of the electric control, so the vibration monitoring of the motor also directly reflects the operating state of the electric control system (i.e., the equipment performance and aging degree of the electric control system), and the motor vibration data is also part of the system monitoring. Two vibration sensors are installed on the motor, one horizontal and one vertical, and the vibration value is collected through the PLC. The PLC control system sets the upper and lower alarm limits. When the collected signal is greater than the upper alarm limit setting value set by the host computer or less than the lower alarm limit setting value set by the host computer, the motor vibration amplitude is judged to be abnormal. The subsequent response measures are that the electric control system will issue a voice alarm and automatically choose whether to lock and protect the hoist system according to the specific alarm content. When the collected signal is less than or equal to the upper alarm limit setting value set by the host computer or greater than or equal to the lower alarm limit setting value set by the host computer, the motor vibration amplitude is judged to be normal.

[0112] In order to avoid a brake accident, in an optional implementation manner, the analysis unit includes:

[0113] a fifth comparison module, comparing the brake shoe clearance with a brake shoe clearance curve graph, wherein the brake shoe clearance curve graph is a curve graph generated according to historical brake shoe clearance data, and an upper interval envelope and a lower interval envelope are set in the brake shoe clearance curve graph;

[0114] A ninth determination module, when the brake shoe clearance is greater than or equal to the upper interval envelope or the brake shoe clearance is less than or equal to the lower interval envelope, determines that the analysis result corresponding to the brake shoe clearance depth analysis is that the brake shoe of the mine hoist has excessive wear;

[0115] The tenth determination module determines that the analysis result corresponding to the brake shoe gap depth analysis is that the brake shoe of the mine hoist does not have excessive wear when the brake shoe gap is smaller than the upper interval envelope and greater than the lower interval envelope.

[0116] In the above embodiment, the above multi-angle analysis includes the above brake shoe gap depth analysis, such as Figure 3 As shown by Figure 3The brake subsystem in the system performs a deep analysis of the brake shoe clearance. The system monitors the brake shoe clearance in real time and evaluates the brake shoe wear status through the change of the brake shoe clearance, specifically the change in the distance of the brake shoe clearance within a certain time range. At the same time, the comparison with the brake shoe wear history record is increased. Specifically, the brake shoe clearance curve is designed, and the curve generated by the brake shoe clearance data of the previous cycle is compared in real time (the hoist continuously completes a lifting operation and a lowering operation as a cycle), and the upper and lower interval envelopes are set. If the upper or lower interval envelopes are exceeded, an alarm or stop is performed according to the requirements to prevent the special working conditions of the lifting system from excessive wear of the brake shoe and avoid brake accidents.

[0117] In order to reduce the aging of the equipment itself and further ensure the safe operation of the mine hoist, in an optional implementation, the above-mentioned analysis unit includes:

[0118] a sixth comparison module, comparing the humidity, the temperature, the smoke concentration and the noise data in the operating environment data with corresponding set thresholds;

[0119] an eleventh judgment module, which judges that the analysis result of the environmental monitoring analysis is that the mine hoist has environmental impact or the mine hoist has aging risk when any of the operating environment data is greater than or equal to the set threshold;

[0120] The twelfth determination module determines, when the above-mentioned operating environment data are all less than the above-mentioned set threshold value, that the above-mentioned analysis result of the above-mentioned environmental monitoring analysis is that the above-mentioned mine hoist currently has no environmental impact and the above-mentioned mine hoist currently does not have the above-mentioned aging risk.

[0121] In the above embodiment, the above operating environment data includes humidity, temperature, smoke concentration and noise data. The above multi-angle analysis includes the above environmental monitoring analysis. Environmental monitoring is also a supplementary means for the intelligent monitoring method of mine hoists. The monitoring data of the temperature and humidity of the environment of the electric control equipment is collected. In combination with the operating characteristics of the electric control equipment, maintenance personnel are reminded to control the temperature and humidity to further ensure the safety of the hoist operation. Since the electric control system of the mine hoist operates under high load and high current conditions for a long time, the aging and insulation of the equipment itself are highly tested, so the temperature and humidity monitoring of the environment is also indispensable. The temperature and humidity of the environment monitoring directly affect the use of the equipment to a certain extent. At the same time, corresponding countermeasures should be taken in extreme temperature and humidity conditions. Humidity sensors, temperature sensors, smoke sensors, and noise sensors are installed in key locations such as the transformer room, electric control room, operating room, garage, and frequency conversion system. Figure 3 As shown by Figure 3The environmental intelligent monitoring module in the system monitors the environmental parameters of key points in real time online. The sensor is wall-mounted and connected to the hoist detection PLC controller through hard wiring. The hoist intelligent monitoring system has voice, sound and light alarm functions and hoist system locking functions for all detection data. When a fault occurs on site, the host computer monitoring system (i.e., the hoist intelligent monitoring system) can broadcast the specific fault information of the system in real time. All alarm parameter values ​​(i.e., the above-mentioned set thresholds) can be set by the host computer without changing the underlying PLC control program. When the sensor measurement value is greater than ±10% (settable), a voice alarm is issued, and when the measurement value is greater than ±20% (settable), an sound and light alarm is issued to lock the mine hoist operation. The hoist intelligent monitoring system reserves 4 DO relay output channels to lock the hoisting electronic control system.

[0122] In order to monitor the temperature rise of key parts of the electric control system and further improve the status data of the electric control system, in an optional implementation manner, the multi-angle analysis includes the temperature rise monitoring analysis of key points of the electric control system, and the comparison unit includes:

[0123] The seventh comparison module compares the above temperature rise data with the set maximum temperature rise limit;

[0124] A thirteenth determination module determines that the analysis result of the temperature rise monitoring and analysis of the key points of the electric control system is that the temperature rise of the key part of the electric control system of the mine hoist is in an abnormal state when the temperature rise data is greater than the set maximum limit of the temperature rise, and the key part of the electric control system at least includes the power cable lap joint of the electric control system;

[0125] The fourteenth determination module determines that the analysis result of the temperature rise monitoring and analysis of the key points of the electronic control system is that the temperature rise of the key part of the electronic control system is in a normal state when the temperature rise data is less than or equal to the set maximum temperature rise limit.

[0126] In the above embodiment, the temperature rise monitoring of the key parts of the electric control system uses wireless temperature measurement to monitor the temperature rise of the joints of the power cables of the electric control system, and incorporates the data into the intelligent monitoring platform to further improve the status data of the system. Figure 3The wireless temperature measurement subsystem in the mine is used for monitoring). The hoist itself is a major equipment in the mine. The electric control system is generally under heavy load, with high operating voltage, large current and long operating time, which puts a high test on the insulation degree of each link in the system. Therefore, the temperature rise of the power cable joints must be monitored. The system sets a maximum temperature rise limit. Once the maximum value is exceeded, an alarm will be issued or the system will stop to prevent a fire. That is, if the maximum value is not exceeded, the temperature rise of the key part of the electric control system of the mine hoist is considered normal, and if the maximum value is exceeded, the temperature rise of the key part of the electric control system of the mine hoist is considered abnormal.

[0127] In order to monitor and analyze the temperature rise of the motor in real time to ensure the safe operation of the motor, in an optional implementation manner, the device further includes:

[0128] A generating unit, used for generating a thermal imaging display diagram according to the temperature rise data of each device in the mine hoist before executing corresponding countermeasures on the mine hoist according to each of the above analysis results;

[0129] The determination unit is used to determine the location of the heat generating device according to the above-mentioned thermal imaging display image, so as to repair or replace the above-mentioned heat generating device.

[0130] In the above embodiment, thermal imaging is recorded by a thermal imaging AI camera and transmitted to a host computer for display. The specific location of the heating device can be confirmed through the thermal imaging display so that the heating device can be repaired or replaced to ensure the safe operation of the motor. A thermal imaging AI camera is installed on the motor side, and the thermal imaging image is as follows: Figure 6 As shown. The above-mentioned monitoring device for a mine hoist includes a processor and a memory. The above-mentioned acquisition unit, analysis unit and execution unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions. The above-mentioned modules are all located in the same processor; or, the above-mentioned modules are located in different processors in any combination.

[0131] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the kernel parameters can be adjusted to solve the problem of low efficiency of monitoring and early warning of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art.

[0132] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0133] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the monitoring method for the mine hoist.

[0134] An embodiment of the present invention provides a processor, and the processor is used to run a program, wherein the program executes the monitoring method of the mine hoist when it is running.

[0135] An embodiment of the present invention provides a mine hoist monitoring system, the mine hoist monitoring system includes a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, at least the following steps are implemented:

[0136] Step S201, obtaining the operating condition data of the mine hoist, the operating condition data at least including motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least including motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range;

[0137] Step S202, performing multi-angle analysis according to the above-mentioned operating condition data to obtain corresponding analysis results, the above-mentioned multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis and electric control system key point temperature rise monitoring analysis, the above-mentioned motor analysis is to analyze the operating state of the motor of the above-mentioned mine hoist according to the above-mentioned motor data, the above-mentioned brake shoe gap depth analysis is to analyze the brake shoe wear state of the above-mentioned mine hoist according to the above-mentioned brake shoe gap, the above-mentioned environmental monitoring analysis is to analyze the equipment state of the above-mentioned mine hoist according to the above-mentioned operating environment data, the above-mentioned electric control system key point temperature rise monitoring analysis is to perform temperature rise analysis on the electric control system of the above-mentioned mine hoist according to the above-mentioned temperature rise data, and the above-mentioned analysis results include at least one of the following: the above-mentioned mine hoist is in a normal state, the temperature rise of the motor of the above-mentioned mine hoist is abnormal, the brake shoe of the above-mentioned mine hoist is excessively worn, and the above-mentioned mine hoist is at risk of aging;

[0138] Step S203: executing corresponding countermeasures on the mine hoist according to the above analysis results.

[0139] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program for initializing at least the following method steps:

[0140] Step S201, obtaining the operating condition data of the mine hoist, the operating condition data at least including motor data, brake shoe clearance, operating environment data and temperature rise data, the motor data at least including motor current data, torque data, speed data, vibration data and thermal imaging data, the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range;

[0141] Step S202, performing multi-angle analysis according to the above-mentioned operating condition data to obtain corresponding analysis results, the above-mentioned multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis and electric control system key point temperature rise monitoring analysis, the above-mentioned motor analysis is to analyze the operating state of the motor of the above-mentioned mine hoist according to the above-mentioned motor data, the above-mentioned brake shoe gap depth analysis is to analyze the brake shoe wear state of the above-mentioned mine hoist according to the above-mentioned brake shoe gap, the above-mentioned environmental monitoring analysis is to analyze the equipment state of the above-mentioned mine hoist according to the above-mentioned operating environment data, the above-mentioned electric control system key point temperature rise monitoring analysis is to perform temperature rise analysis on the electric control system of the above-mentioned mine hoist according to the above-mentioned temperature rise data, and the above-mentioned analysis results include at least one of the following: the above-mentioned mine hoist is in a normal state, the temperature rise of the motor of the above-mentioned mine hoist is abnormal, the brake shoe of the above-mentioned mine hoist is excessively worn, and the above-mentioned mine hoist is at risk of aging;

[0142] Step S203: executing corresponding countermeasures on the mine hoist according to the above analysis results.

[0143] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0144] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0145] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0146] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0147] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0148] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0149] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0150] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0151] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0152] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0153] 1) The monitoring method of the mine hoist of the present application is to integrate the intelligent analysis of the motor in the hoisting system (temperature rise and vibration), the brake shoe gap depth analysis, the key point monitoring of the electric control system (such as wireless temperature measurement of power cable lap connection) and environmental monitoring, and the speed closed-loop control, power factor control, vector control of frequency conversion, current closed-loop control, fault diagnosis, etc. of the electric control itself into a whole for consideration, to make trend judgments, predict faults in advance, and perform intelligent analysis, and to execute corresponding treatment measures when abnormal problems are found in the mine hoist. The present application solves the problem of low efficiency of monitoring and early warning of mine hoists due to the lack of comprehensive monitoring of motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art.

[0154] 2) The monitoring device of the mine hoist of the present application integrates the intelligent analysis of the motor in the hoisting system (temperature rise and vibration), brake shoe gap depth analysis, key point monitoring of the electric control system (such as wireless temperature measurement of power cable lap connection) and environmental monitoring, and combines the speed closed-loop control, power factor control, vector control of frequency conversion, current closed-loop control, fault diagnosis, etc. of the electric control itself into an overall consideration, and performs trend judgment, early prediction of faults, intelligent analysis, and executes corresponding treatment measures when abnormal problems are found in the mine hoist. The present application solves the problem of low monitoring and early warning efficiency of the mine hoist due to the lack of comprehensive monitoring of the motor analysis, brake shoe gap analysis, key point monitoring of the electric control system and environmental monitoring in the prior art.

[0155] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for monitoring a mine hoist, characterized in that: include: Acquire the operating condition data of the mine hoist, wherein the operating condition data at least includes motor data, brake shoe clearance, operating environment data and temperature rise data, wherein the motor data at least includes motor current data, torque data, speed data, vibration data and thermal imaging data, and the brake shoe clearance is the distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; Perform multi-angle analysis according to the operating condition data to obtain corresponding analysis results, the multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis and electric control system key point temperature rise monitoring analysis, the motor analysis is to analyze the operating state of the motor of the mine hoist according to the motor data, the brake shoe gap depth analysis is to analyze the brake shoe wear state of the mine hoist according to the brake shoe gap, the environmental monitoring analysis is to analyze the equipment state of the mine hoist according to the operating environment data, the electric control system key point temperature rise monitoring analysis is to perform temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis results include at least one of the following: the mine hoist is in a normal state, the motor temperature rise of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; Corresponding countermeasures are implemented on the mine hoist according to each of the analysis results.

2. The method according to claim 1, characterized in that The multi-angle analysis includes the motor analysis, Perform multi-angle analysis based on the operating condition data to obtain corresponding analysis results, including at least: generating an armature current curve graph according to the current data in the motor data, and generating a speed curve graph according to the speed data; When the operation state of the mine hoist is an empty-carriage state, the current operation current of the mine hoist is compared with a first set operation current upper limit value, wherein the operation state at least includes a heavy object lifting state, a heavy object lowering state and the empty-carriage state, and the empty-carriage state includes an empty-carriage lifting state and an empty-carriage lowering state; In the case where the current operating current is greater than the set operating current upper limit value, it is determined that the analysis result of the motor analysis is that the operating current of the mine hoist is abnormal, and the first set operating current upper limit value is the operating current upper limit value set for the mine hoist in a no-load state; In the case where the current operating current is less than or equal to the set operating current upper limit value, determining that the analysis result of the motor analysis is that the operating current of the mine hoist is normal; When the operation state of the mine hoist is the weight lifting state, the armature current curve graph is compared with a historical armature current curve graph, and the speed curve graph is compared with a historical speed curve graph, wherein the historical armature current curve graph is an armature current curve graph generated when the mine hoist was in the weight lifting state last time, and the historical speed curve graph is a speed curve graph generated when the mine hoist was in the weight lifting state last time; In the case where the difference between the armature current curve graph and the historical armature current curve graph is greater than a first difference threshold and / or the difference between the speed curve graph and the historical speed curve graph is greater than a second difference threshold, determining that the analysis result of the motor analysis is that the motor temperature rise of the mine hoist is abnormal; In the case where the difference between the armature current curve graph and the historical armature current curve graph is less than or equal to the first difference threshold and / or the difference between the speed curve graph and the historical speed curve graph is less than or equal to the second difference threshold, determining that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is normal; When the operating state of the mine hoist is the heavy object lifting state, comparing the thermal imaging data with a set temperature rise threshold; In a case where the temperature of the thermal imaging data is greater than the set temperature rise threshold, determining that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is abnormal; In a case where the temperature of the thermal imaging data is less than or equal to the set temperature rise threshold, it is determined that the analysis result of the motor analysis is that the temperature rise of the motor of the mine hoist is normal.

3. The method according to claim 1, characterized in that The multi-angle analysis includes the motor analysis, Performing multi-angle analysis based on the operating condition data to obtain corresponding analysis results also includes: Comparing the vibration data with a vibration setting value, wherein the vibration setting value includes an upper limit vibration setting value and a lower limit vibration setting value; In a case where the vibration data is greater than the upper limit vibration setting value and / or the vibration data is less than the lower limit vibration setting value, determining that the analysis result of the motor analysis is that the motor vibration amplitude is abnormal; When the vibration data is less than or equal to the upper limit vibration setting value and / or the vibration data is greater than or equal to the lower limit vibration setting value, it is determined that the analysis result of the motor analysis is that the motor vibration amplitude is normal.

4. The method according to claim 1, characterized in that The multi-angle analysis includes the brake shoe gap depth analysis, and the multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: Comparing the brake shoe clearance with a brake shoe clearance curve graph, wherein the brake shoe clearance curve graph is a curve graph generated according to historical brake shoe clearance data, and an upper interval envelope and a lower interval envelope are set in the brake shoe clearance curve graph; When the brake shoe clearance is greater than or equal to the upper interval envelope or the brake shoe clearance is less than or equal to the lower interval envelope, it is determined that the analysis result corresponding to the brake shoe clearance depth analysis is that the brake shoe of the mine hoist has excessive wear; When the brake shoe clearance is smaller than the upper interval envelope and the brake shoe clearance is larger than the lower interval envelope, it is determined that the analysis result corresponding to the brake shoe clearance depth analysis is that there is no excessive wear on the brake shoe of the mine hoist.

5. The method according to claim 1, characterized in that The operating environment data includes humidity, temperature, smoke concentration and noise data, and the multi-angle analysis includes the environmental monitoring analysis. The multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: Comparing the humidity, the temperature, the smoke concentration and the noise data in the operating environment data with corresponding set thresholds; In the case where any one of the operating environment data is greater than or equal to the set threshold, judging that the analysis result of the environmental monitoring analysis is that the mine hoist has environmental impact or the mine hoist has aging risk; When the operating environment data are all less than the set threshold value, it is determined that the analysis result of the environmental monitoring analysis is that the mine hoist currently has no environmental impact and the mine hoist currently has no aging risk.

6. The method according to claim 1, characterized in that The multi-angle analysis includes temperature rise monitoring and analysis of key points of the electric control system, and multi-angle analysis is performed according to the operating condition data to obtain corresponding analysis results, including: Comparing the temperature rise data with the set maximum temperature rise limit; In the case where the temperature rise data is greater than the set maximum temperature rise limit, the analysis result of the temperature rise monitoring and analysis of the key points of the electric control system is determined to be that the temperature rise of the key part of the electric control system of the mine hoist is in an abnormal state, and the key part of the electric control system at least includes the power cable overlap of the electric control system; When the temperature rise data is less than or equal to the set maximum temperature rise limit, the analysis result of the temperature rise monitoring and analysis of the key points of the electronic control system is determined to be that the temperature rise of the key part of the electronic control system is in a normal state.

7. The method according to claim 1, characterized in that Before executing corresponding countermeasures on the mine hoist according to each of the analysis results, the method further includes: Generate a thermal imaging display diagram based on the temperature rise data of each device in the mine hoist; The location of the heat generating device is determined according to the thermal imaging display image so as to repair or replace the heat generating device.

8. A monitoring device for a mine hoist, characterized in that: The device comprises: an acquisition unit, for acquiring operating condition data of a mine hoist, wherein the operating condition data at least includes motor data, brake shoe clearance, operating environment data and temperature rise data, wherein the motor data at least includes motor current data, torque data, speed data, vibration data and thermal imaging data, and the brake shoe clearance is a distance change value of the brake shoe clearance of the brake of the mine hoist within a set time range; an analysis unit, for performing multi-angle analysis according to the operating condition data to obtain corresponding analysis results, wherein the multi-angle analysis includes at least one of the following: motor analysis, brake shoe gap depth analysis, environmental monitoring analysis, and temperature rise monitoring analysis of key points of the electric control system, wherein the motor analysis is to analyze the operating state of the motor of the mine hoist according to the motor data, the brake shoe gap depth analysis is to analyze the brake shoe wear state of the mine hoist according to the brake shoe gap, the environmental monitoring analysis is to analyze the equipment state of the mine hoist according to the operating environment data, and the temperature rise monitoring analysis of key points of the electric control system is to perform a temperature rise analysis on the electric control system of the mine hoist according to the temperature rise data, and the analysis results include at least one of the following: the mine hoist is in a normal state, the temperature rise of the motor of the mine hoist is abnormal, the brake shoe of the mine hoist is excessively worn, and the mine hoist is at risk of aging; An execution unit is used to execute corresponding countermeasures on the mine hoist according to each of the analysis results.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A mine hoist monitoring system, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 7.

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