CN114538237A - Elevator steel wire rope online monitoring alarm system, method and device - Google Patents
Elevator steel wire rope online monitoring alarm system, method and device Download PDFInfo
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- B66—HOISTING; LIFTING; HAULING
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- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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Abstract
The application provides an on-line monitoring and alarming system, method and device for an elevator steel wire rope, wherein the system comprises a plurality of terminating devices, a plurality of annular pressure sensors, a data acquisition device, a data transmission device, a cloud platform server and a mobile terminal; each termination device is fixed in respectively on each wire rope, and termination device includes: the annular pressure sensors are sleeved on the screw rods and fixed on the elastic elements corresponding to the screw rods; the data acquisition device is connected with the plurality of annular pressure sensors and is used for acquiring tension data of each steel wire rope; the data transmission device is respectively connected with the data acquisition device and the cloud platform server; the cloud platform server receives tension data of each steel wire rope, and analyzes whether the safety performance parameters of the elevator steel wire ropes are in a normal range or not; the mobile terminal is connected with the cloud platform server and used for receiving the safety performance parameters of the elevator steel wire rope in real time.
Description
Technical Field
The application relates to the technical field of elevators, in particular to an online monitoring and alarming system, method and device for elevator steel wire ropes.
Background
With the continuous development of economy and the continuous expansion of urban scale, the heights and floors of buildings such as houses, hotels and office buildings are continuously increased, and the installation and use number of elevators is also increased. The use of elevator is giving people to come in and go out high-rise building and is convenient simultaneously, because the negative effect that elevator trouble caused is comparatively serious, so also receive more and more attention. Therefore, how to effectively monitor the safe operation of the elevator and eliminate various elevator fault hidden dangers in time becomes an important issue to be solved urgently by safety monitoring departments of various elevator production units, use units and special equipment at all levels.
At present, devices for measuring the tension of elevator steel wires in the market are offline detection or need to be installed on site, and generally only measure a single steel wire rope, so that the stress condition of each steel wire rope cannot be accurately reflected, and if each steel wire rope is measured, a large amount of labor and time are consumed; the load of the elevator car is detected by an overload switch at the bottom of the car, a pressure sensor mode of a rope hitch plate of a steel wire rope or the tension of the steel wire rope, so that the situations of low measurement precision or time and labor consumption in the measurement process exist; the mode of detecting the elevator balance coefficient is generally a weight loading method or an unloaded measurement method, the measurement result of the mode has certain timeliness, and if the self weight of the car or some reasons of the counter weight are changed after measurement, maintenance personnel cannot check in time, namely the actual state after measurement is changed with the state at the time of measurement, and no matter the balance coefficient is reduced or increased, the elevator safety operation is affected. That is to say, the technical scheme in the prior art can only reflect the data when the maintenance personnel check, and cannot judge and process the changed data in time, and the real-time performance of the data is low.
Disclosure of Invention
The embodiment of the application provides an on-line monitoring and alarming system, method and device for an elevator steel wire rope, and the technical problems mentioned in the background technology can be effectively solved.
In order to achieve the purpose, the technical scheme is as follows:
the first aspect provides an online monitoring and alarming system for a steel wire rope of an elevator, which comprises a plurality of terminating devices, a plurality of annular pressure sensors, a data acquisition device, a data transmission device, a cloud platform server and a mobile terminal; each termination device is fixed on each wire rope respectively, termination device includes: the annular pressure sensors are sleeved on the screw rods and fixed on the elastic elements corresponding to the screw rods; the data acquisition device is connected with the plurality of annular pressure sensors and is used for acquiring tension data of each steel wire rope; the data transmission device is respectively connected with the data acquisition device and the cloud platform server and is used for transmitting the tension data of each steel wire rope to the cloud platform server; the cloud platform server receives tension data of each steel wire rope, and analyzes whether the safety performance parameters of the elevator steel wire ropes are in a normal range or not; and the mobile terminal is connected with the cloud platform server and is used for receiving the safety performance parameters of the elevator steel wire rope in real time.
According to the system of the first aspect, the tension of all steel wire ropes is detected in real time, when the tension exceeds a threshold value, an alarm is given in time, the elevator stops running, and maintenance personnel are urged to adjust or repair, so that potential safety hazards are eliminated, the life and property safety of elevator passengers is guaranteed, meanwhile, the service life of elevator equipment is prolonged, the economic cost is reduced, and the maintenance efficiency of the equipment is improved.
With reference to the first aspect, in a first possible implementation manner, the termination apparatus further includes: the annular pressure sensor is characterized in that the nut, the gasket and the rubber pads are sequentially sleeved on the screw rod and are respectively located at two ends of the elastic element, one end of the annular pressure sensor is connected with the nut through the gasket, and the other end of the annular pressure sensor is connected with the elastic element through the rubber pads.
With reference to the first aspect, in a second possible implementation manner, the terminating device further includes an elastic inner sleeve, and the elastic inner sleeve is sleeved on the screw rod and is disposed inside the elastic element.
With reference to the first aspect, in a third possible implementation manner, the system further includes: the suspension device is any one of a steel wire rope, a coated belt, a chain or a steel belt.
With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the termination device further includes: the taper sleeve is arranged at one end of the screw rod, the compression direction of the screw rod is consistent with that of the elastic element, the wedge is connected with the taper sleeve, a through hole is formed between the taper sleeve and the wedge, and the through hole is connected with the suspension device.
With reference to the first aspect, in a fifth possible implementation manner, a wireless communication module connected to the data transmission device is disposed in the data acquisition device.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, when an elevator operation and maintenance worker performs construction work, the output module of the annular pressure sensor is connected with the mobile terminal, and is used for implementing reference of detection data through the mobile terminal.
With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the cloud platform server is disposed in the elevator monitoring center or is connected to the monitoring display screen of the elevator monitoring center through a network.
In a second aspect, an embodiment of the present application provides an elevator steel wire rope online monitoring and alarming method, which is applied to the elevator steel wire rope online monitoring and alarming system in the first aspect and any possible implementation manner in combination with the first aspect, and the method includes:
measuring the tension of each steel wire rope based on a termination device and an annular pressure sensor on each steel wire rope;
the real-time data of each measured steel wire rope is transmitted to a cloud platform server through a data transmission device, and the cloud platform server compares the current measurement value with a preset threshold value to judge whether the current elevator runs safely.
In a third aspect, an embodiment of the present application provides an elevator wire rope on-line monitoring alarm device, and the device includes:
the measuring module is used for measuring the tension of each steel wire rope based on the terminating device and the annular pressure sensor on each steel wire rope;
and the processing module is used for transmitting the measured real-time data of each steel wire rope to the cloud platform server through the data transmission device, and the cloud platform server compares the current measurement value with a preset threshold value and judges whether the current elevator runs safely or not.
Compared with the prior art, the invention has the beneficial effects that:
the tension of all the steel wire ropes, the load state of the lift car and the balance coefficient are detected in real time at the same time, when the tension exceeds a threshold value, an alarm is given in time, the operation of the lift is stopped, and maintenance personnel are supervised to adjust or repair, so that potential safety hazards are eliminated, the life and property safety of lift passengers is ensured, the service life of lift equipment is prolonged, the economic cost is reduced, and the maintenance efficiency of the equipment is improved; the device can realize real-time online monitoring of a plurality of safety performances of the elevator, immediately transmits a safety signal to a control device of the elevator after a set threshold value is exceeded, so that an elevator car cannot start to run, and simultaneously sends a field actual value and an alarm signal to a monitoring platform and elevator maintenance personnel in real time through a physical network data transmission module; the tension of the steel wire rope, the load state of the lift car and the balance coefficient are monitored simultaneously, so that the safety performance of the lift is monitored in real time, potential safety hazards are checked in time, the operation reliability of the lift is improved, and the risk of accidents is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an elevator steel wire rope on-line monitoring alarm system provided by the embodiment of the application;
FIG. 2 is a schematic structural diagram of a termination device according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of an elevator steel wire rope on-line monitoring alarm method provided by the embodiment of the application;
fig. 4 is a schematic structural diagram of an elevator steel wire rope on-line monitoring alarm device provided in the application embodiment.
Reference numerals: 10-elevator steel wire rope online monitoring alarm system, 110-terminal device, 111-screw rod, 112-rubber pad, 113-elastic inner sleeve, 114-elastic element, 115-gasket, 116-nut, 120-annular pressure sensor, 130-data acquisition device, 140-data transmission device, 150-cloud platform server, 160-mobile terminal, 20-elevator steel wire rope online monitoring alarm device, 210-measurement module and 220-processing module.
Detailed Description
The technical solution in the present application is described below with reference to the accompanying drawings.
In the existing running elevators, elevator maintenance personnel check and maintain the elevators according to fixed periods and fixed items. According to the existing maintenance rules, the tension of the elevator steel wire rope is generally checked every quarter, and the condition that the tension is not checked, missed to check or mistakenly checked frequently occurs due to the difference of the technical level of elevator maintenance personnel to the state check of the on-site actual equipment.
The service life of the elevator steel wire rope is in direct relation with the stress, because the elevator steel wire rope is not stressed uniformly, the abrasion degree of the steel wire rope is inconsistent no matter the stress is small or the stress is large, and when the deviation of a single or a plurality of steel wire ropes and the average value is overlarge, the abrasion of the traction sheave is inconsistent, and finally the steel wire rope and the traction sheave are scrapped. If any one steel wire rope is scrapped, all the steel wire ropes should be replaced at the same time, so that great economic loss is caused. If the elevator is not replaced in time, certain accident potential can be buried in the safe operation of the elevator.
Therefore, the embodiment of the application provides an online monitoring and alarming system 10 for elevator steel wire ropes, which can realize real-time monitoring of tension of each steel wire rope, load state of a car and balance coefficient. Referring to fig. 1 and 2, in particular, an online monitoring and alarming system 10 for an elevator steel wire rope in an embodiment of the present application includes: the system comprises a plurality of termination devices 110, a plurality of annular pressure sensors 120, a data acquisition device 130, a data transmission device 140, a cloud platform server 150 and a mobile terminal 160; each termination device 110 is secured to a respective wire rope, the termination device 110 comprising: the pressure sensor comprises a screw 111 and an elastic element 114 sleeved on the screw 111, wherein each annular pressure sensor 120 is sleeved on each screw 111 and fixed on the elastic element 114 corresponding to each screw 111; the data acquisition device 130 is connected with the plurality of annular pressure sensors 120 and is used for acquiring tension data of each steel wire rope; the data transmission device 140 is respectively connected to the data acquisition device 130 and the cloud platform server 150, and is configured to transmit tension data of each steel wire rope to the cloud platform server 150; the cloud platform server 150 receives tension data of each steel wire rope, and analyzes whether the safety performance parameters of the elevator steel wire rope are in a normal range or not; the mobile terminal 160 is connected with the cloud platform server 150 and is used for receiving the safety performance parameters of the elevator steel wire rope in real time.
Specifically, the termination device 110 includes: the pressure sensor comprises a screw 111, an elastic element 114 sleeved on the screw 111, a nut 116 and a gasket 115 sequentially sleeved on the screw 111, and rubber pads 112 respectively positioned at two ends of the elastic element 114, wherein one end of the annular pressure sensor 120 is connected with the nut 116 through the gasket 115, and the other end of the annular pressure sensor 120 is connected with the elastic element 114 through the rubber pads 112.
The annular pressure sensor 120 is directly fixed on the termination device 110 of the steel wire rope, namely the elastic element 114, through the rubber pad 112, so that the tension of the steel wire rope can be directly reflected through the pressure of the spring, the larger the tension of the steel wire rope is, the larger the compression stroke of the spring is, and the smaller the tension of the steel wire rope is, and the measurement mode is simpler, more convenient and more intuitive.
As a possible embodiment, the terminating device 110 further includes an elastic inner sleeve 113, and the elastic inner sleeve 113 is sleeved on the screw 111 and disposed inside the elastic element 114.
In detail, in the present embodiment, the elastic member 114 is a spring. The dead weight of the elevator car, the dead weight of the counterweight, the dead weight of the steel wire rope and other fixed weights, and the load (the real-time variable weight) in the car are all transmitted to the spring of the termination device 110 through the steel wire rope, and the stress of the steel wire rope, namely the tension of the steel wire rope, can be reflected by measuring the stress value of the spring. The stress condition of the whole part of the elevator can be directly reflected by measuring the tension of the steel wire rope, and the larger the load in the elevator car is, the larger the tension of the steel wire rope is.
As a possible implementation, the system further comprises: the suspension device is any one of a steel wire rope, a coated belt, a chain or a steel belt.
As a possible implementation, the termination device 110 further comprises: the taper sleeve is arranged at one end of the screw 111, the compression direction of the screw is consistent with that of the elastic element 114, the taper sleeve is connected with the wedge, a through hole is formed between the taper sleeve and the wedge, and the through hole is connected with the suspension device.
One end of the screw 111 along the compression direction of the elastic element 114 is connected with a suspension device of the elevator, the elastic element 114 is sleeved on the screw 111, and two ends of the elastic element 114 are respectively connected with an upper rubber pad 112 and a lower rubber pad 112, wherein the upper rubber pad 112 is sleeved on the screw 111 and is connected with one end of the annular pressure sensor 120, and the other end of the annular pressure sensor 120 is connected with a nut 116 sleeved on the screw 111 through a gasket 115. In the present embodiment, the nut 116 includes a lock nut 116 and an adjustment nut 116, wherein the nut 116 near the end of the screw 111 is the adjustment nut 116.
In the embodiment of the present application, the advantages of the pressure sensor using the annular pressure sensor 120 include several points: (1) a special sensor for the elevator steel wire rope is not needed, so that the cost is lower, and the application range is wider; the installation is convenient, and the spring is directly sleeved between the spring and the locking nut 116; each steel wire rope is provided with a sensor, so that the actual and real-time tension data of the steel wire ropes can be directly measured and can be compared at the same time; (2) designed as an annular pressure sensor 120, may be independent of the form of the elevator termination device 110 product. The termination device 110 device of the elevator comprises a plurality of forms such as casting type, self-locking type, heart-shaped ring sleeve type, combined type, integrated type and the like, and the invention is characterized in that a sensor is sleeved around a screw rod of the termination device 110 and is fixed between a compression spring of the termination device 110 and a locking nut 116 without being limited by the product form of any termination device 110 device; (3) designed as an annular pressure sensor 120, can be independent of elevator suspension product form. Because the elevator suspension comprises various forms of wire ropes, coated belts or chains. The present invention is measured by the compression spring of the termination 110 because the force applied to the suspension is ultimately fed back by the length of the spring's compression stroke regardless of the suspension type; (4) the design is the annular pressure sensor 120, and a plurality of data such as wire rope tension, car load state and balance coefficient can be measured and fed back in real time simultaneously to the combination software algorithm, need not to install the detection device of a plurality of independent functions, more has high economic price/performance ratio.
As a possible implementation, a wireless communication module connected to the data transmission device 140 is disposed in the data acquisition device 130. The data acquisition device 130 is provided with a wireless communication module, so that the acquired measurement data such as the tension of the steel wire rope, the load of the car, the balance coefficient and the like can be transmitted based on a communication channel between the wireless communication module and the data transmission device 140. Optionally, the wireless communication module may be any one of a bluetooth wireless communication module, a WIFI wireless communication module, a GPRS wireless communication module, or a ZigBee wireless communication module.
As a possible implementation manner, during the construction work of the elevator operation and maintenance personnel, the output module of the annular pressure sensor 120 is connected with the mobile terminal 160, so as to realize the reference of the detection data through the mobile terminal 160.
Specifically, when the elevator steel wire rope online monitoring alarm system 10 is used for detection, a detection position needs to be selected and determined so as to install a detection device, and the method comprises the following specific steps: (1) the detection position is selected, and in general, the car side terminating device 110 is detected, and the number of the terminating device 110 is determined, namely, the number is determined according to the sequence of the terminating device 110; (2) removing each cotter pin of the termination 110, typically after ensuring that the car and counterweight are reliably supported or suspended, removing the two nuts 116 of the rope end combination; (3) mounting the annular pressure sensor 120 on the spring and washer 115; (4) two fixing nuts 116 are installed and locked to each other, and finally, cotter pins on the screw rods 111 are installed.
According to the description of the above detection process, the annular pressure sensor 120 can be installed in real time when measurement is needed, and can also be fixed for long-term use, the annular pressure sensor 120 is convenient to install and disassemble, the tensile force, the car load, the balance coefficient and the like of a plurality of steel wire ropes can be detected simultaneously, and the accuracy and the efficiency of detection are improved.
As a possible implementation manner, the cloud platform server 150 is disposed in the elevator monitoring center or connected to the monitoring display screen of the elevator monitoring center through a network.
The cloud platform server 150 has a large-scale operation and analysis capability, a plurality of calculation formulas of elevator operation safety parameters and normal preset threshold values corresponding to the calculation formulas are preset in the cloud platform server 150, and when the cloud platform server 150 receives tension detection data corresponding to each steel wire rope transmitted by the data transmission device 140, whether the safety parameters corresponding to each steel wire rope are located in a normal range at present is calculated and analyzed based on a prestored calculation formula. In order to visualize the results, an information monitoring system is designed based on the cloud platform server 150, and the calculation results of various parameters are visually displayed.
Optionally, the cloud platform server 150 is connected with the mobile terminal 160, so that the mobile terminal 160 can receive the elevator monitoring result in real time, and the mobile terminal 160 is held by an elevator operation and maintenance person or a manager or fixed in a certain place of the elevator, so that the elevator operation and maintenance person or the manager can check and monitor whether the running state of the elevator is safe in real time on line, and the running safety and the response fault speed of the elevator are improved. The mobile terminal 160 may be a Personal Computer (PC), a tablet PC, a smart phone, a Personal Digital Assistant (PDA), and the like, which are not limited herein.
Through the elevator steel wire rope on-line monitoring alarm system 10 provided by the embodiment of the application, the tension of the steel wire rope, the load of a car and the balance coefficient can be measured simultaneously.
Through the elevator steel wire rope on-line monitoring and alarming system 10 provided by the embodiment of the application, the tension change of each steel wire rope and the tension difference between each steel wire rope can be monitored in real time through the measurement of the tension of the steel wire rope, and when the deviation of the average tension value of each steel wire rope and all steel wire ropes exceeds 5%, an alarming signal is sent out immediately before the next operation, so that the elevator can not be started to operate.
According to the elevator steel wire rope online monitoring and alarming system 10 provided by the embodiment of the application, the actual load in the elevator car can be monitored in real time through the measurement of the tension of the steel wire rope, and once the actual load reaches 95% -100% of the rated load, a full load signal is sent to remind passengers of full load; when the rated load reaches 105-110% or more, an overload signal is sent out, and meanwhile, an alarm signal is sent out to the system and the mobile terminal 160, so that the elevator can not be closed and can not be started to run.
Through the elevator wire rope on-line monitoring alarm system 10 provided by the embodiment of the application, the change of the elevator balance coefficient can be monitored in real time through the measurement of the tension of the wire rope, and once the tension is less than 40% or more than 50%, an alarm signal is sent out immediately before the next operation, so that the elevator cannot be started to operate.
Referring to fig. 3, an embodiment of the present application provides an elevator steel wire rope online monitoring and alarming method, and the method is applied to the elevator steel wire rope online monitoring and alarming system, and the method includes: step S11 and step S12.
Step S11: measuring the tension of each steel wire rope based on a termination device and an annular pressure sensor on each steel wire rope;
step S12: the real-time data of each measured steel wire rope is transmitted to a cloud platform server through a data transmission device, and the cloud platform server compares the current measurement value with a preset threshold value to judge whether the current elevator runs safely.
The following is a detailed description of a specific execution flow of the elevator steel wire rope on-line monitoring and alarming method.
Step S11: the tension of each wire rope is measured based on the termination device and the annular pressure sensor on each wire rope.
In the embodiment of the application, the real-time tension change condition of each steel wire rope can be obtained in real time by installing a termination device and an annular pressure sensor on each steel wire rope. Based on the real-time change condition of the tension of each steel wire rope, whether the elevator steel wire rope has a fault can be judged.
The termination device comprises an elastic element, and the tension change of the steel wire rope is reflected by the change condition of the elastic element. The tension of each suspension device and the pressure of a compression spring in the opposite end device are measured to obtain the value of the corresponding pressure sensor.
Step S12: the real-time data of each measured steel wire rope is transmitted to a cloud platform server through a data transmission device, and the cloud platform server compares the current measured value with a preset threshold value to judge whether the current elevator runs safely.
Processing and converting the tension data into corresponding tension numerical values Fn based on real-time tension data on the steel wire ropes acquired by a cloud platform server in real time, wherein n is 1 and 2; analyzing and judging the tension value, wherein safety parameters related to the safe operation of the elevator comprise: deviation of a tension value of a steel wire rope, actual load of an elevator and an elevator balance coefficient.
In detail, the calculation process of calculating the tension deviation value of the steel wire rope comprises the following steps:
firstly, calculating a tension average value Fi, wherein the calculation formula is as follows:
the deviation Fp of the maximum and minimum stressed values in the suspension device and the average tension value Fi is calculated according to the formula:
if real-time measurement's numerical value is more than 5% the time, then send alarm signal to the system backstage through thing networking data transmission module immediately, remind elevator maintenance personnel to arrive at on-the-spot adjustment wire rope tension as early as possible through APP simultaneously, until every tension is close to the average value as far as possible, and when the deviation of every linkage tension average value is all not more than 5%, remove the warning.
For example, company's office building has the elevator of computer lab to measure, and when the car entablature was located same horizontal position with heavy entablature, 6 wire rope pulling force values are as follows through annular sensor measurement:
| wire rope order number | 1# steel wire rope | 2# steel wire rope | 3# steel wire rope | 4# steel wire rope | 5# Steel wire rope | 6# steel wire rope |
| Pulling force value (indicator) | 83.5Kg | 82.5Kg | 77.5Kg | 75Kg | 82.5Kg | 78Kg |
The steel wire rope is measured from left to right:
average number: (83.5+82.5+77.5+75+82.5+ 78)/6-79.83 Kg;
average value: (83.5-75)/79.83-0.1-10%; the deviation of the tension of the steel wire rope exceeds the standard due to the fact that the tension is more than 10% and 5%. The tension of the steel wire rope needs to be adjusted.
Based on real-time tension data on each steel wire rope acquired by a cloud platform server in real time, the calculation process for calculating the load state of the elevator is as follows:
setting the numerical value of the rated load Q of the car in the system, such as 800kg, 1000kg, 3000kg and the like;
when the actual load of the measured elevator car is 0-9% Q, the elevator car is judged to be in an unloaded state;
when the actual load of the car is measured to be 10-39% Q, the car is judged to be in a light load state;
when the actual load of the measured elevator car is 40-60% Q, the elevator car is judged to be in a half-load state;
when the actual load of the car is measured to be 61-89% Q, the car is judged to be in a heavy load state;
when the actual load of the measured elevator car is 90-100% Q, the elevator car is judged to be in a full-load state;
when the actual load of the car is measured to be 105-110% Q, the car is judged to be in an overload state;
when the load of the elevator car is full load, a full load or straight-driving state signal of an elevator control system is switched on, so that the elevator car enters a straight-driving running state, only a main command signal in the elevator car is executed, a landing calling signal is not responded any more, and the running efficiency of the elevator is improved.
When the load of the elevator car is in an overload state, an overload signal of an elevator control system is immediately switched on, so that the elevator car cannot be started to run, the car door is not closed or opened reversely, and meanwhile, an audible and visual alarm signal is sent out to remind passengers to quit until the normal load is recovered.
Based on real-time tension data on each steel wire rope acquired by a cloud platform server in real time, the calculation process for calculating the elevator balance coefficient is as follows:
according to the definition of the balance coefficient of the elevator, the calculation formula is as follows:
G＝(P+Q)k
in the formula, G is the weight of the counterweight, P is the self weight of the car, Q is the rated load of the car, k is the balance coefficient, no matter the traction ratio is 1:1 or 2:1, the self weight of the car, the rated load and the self weight of the counterweight can be fed back to the compression force of the spring of the termination device through the stress of the suspension device, all the stress F1i of the suspension device on the counterweight side and the stress F2i of the suspension device on the car side can be directly measured through an annular pressure sensor, and the weight difference between the car side and the counterweight side is adopted.
According to the foregoing description about the tension measurement, the average value F1i of the counterweight side suspension and the average value F2i of the car side suspension can be measured, that is, the difference in tension between the two side suspensions can be calculated as a balance coefficient, and the equivalent calculation formula is:
in the formula: k is a balance coefficient, n is a traction ratio, F1i is an average value of tension of a suspension device on the counterweight side, F2i is an average value of tension of a suspension device on the car side, Q is a rated load of the car, and gn is a gravitational acceleration of 9.8m/s2。
Referring to fig. 4, an embodiment of the present application provides an elevator steel wire rope online monitoring alarm device 20, where the device 20 includes:
a measuring module 210 for measuring the tension of each wire rope based on the termination device and the annular pressure sensor on each wire rope;
and the processing module 220 is used for transmitting the measured real-time data of each steel wire rope to the cloud platform server through the data transmission device, and the cloud platform server compares the current measured value with a preset threshold value to judge whether the current elevator runs safely.
In summary, the embodiment of the application provides an online monitoring and alarming system, method and device for an elevator steel wire rope, wherein the system comprises a plurality of terminating devices, a plurality of annular pressure sensors, a data acquisition device, a data transmission device, a cloud platform server and a mobile terminal; each termination device is fixed on each wire rope respectively, termination device includes: the annular pressure sensors are sleeved on the screw rods and fixed on the elastic elements corresponding to the screw rods; the data acquisition device is connected with the plurality of annular pressure sensors and is used for acquiring tension data of each steel wire rope; the data transmission device is respectively connected with the data acquisition device and the cloud platform server and is used for transmitting the tension data of each steel wire rope to the cloud platform server; the cloud platform server receives tension data of each steel wire rope, and analyzes whether the safety performance parameters of the elevator steel wire ropes are in a normal range or not; and the mobile terminal is connected with the cloud platform server and is used for receiving the safety performance parameters of the elevator steel wire rope in real time.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In addition, the "/" in this document generally indicates that the former and latter associated objects are in an "or" relationship, but may also indicate an "and/or" relationship, which may be understood with particular reference to the former and latter text.
In the present application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An elevator steel wire rope on-line monitoring alarm system is characterized by comprising a plurality of terminating devices, a plurality of annular pressure sensors, a data acquisition device, a data transmission device, a cloud platform server and a mobile terminal;
each termination device is fixed on each wire rope respectively, termination device includes: the annular pressure sensors are sleeved on the screw rods and fixed on the elastic elements corresponding to the screw rods;
the data acquisition device is connected with the plurality of annular pressure sensors and is used for acquiring tension data of each steel wire rope;
the data transmission device is respectively connected with the data acquisition device and the cloud platform server and is used for transmitting the tension data of each steel wire rope to the cloud platform server;
the cloud platform server receives tension data of each steel wire rope, and analyzes whether the safety performance parameters of the elevator steel wire ropes are in a normal range or not;
the mobile terminal is connected with the cloud platform server and used for receiving safety performance parameters of the elevator steel wire rope in real time.
2. The elevator steel wire rope on-line monitoring alarm system according to claim 1, wherein the termination device further comprises: the annular pressure sensor is characterized in that the nut, the gasket and the rubber pads are sequentially sleeved on the screw rod and are respectively located at two ends of the elastic element, one end of the annular pressure sensor is connected with the nut through the gasket, and the other end of the annular pressure sensor is connected with the elastic element through the rubber pads.
3. The elevator steel wire rope on-line monitoring alarm system according to claim 1, wherein the termination device further comprises an elastic inner sleeve, the elastic inner sleeve is sleeved on the screw rod and is arranged in the elastic element.
4. The elevator steel wire rope on-line monitoring alarm system according to claim 1, characterized in that the system further comprises: the suspension device is any one of a steel wire rope, a coated belt, a chain or a steel belt.
5. The elevator steel wire rope on-line monitoring alarm system according to claim 4, wherein the termination device further comprises: the taper sleeve is arranged at one end of the screw rod, the compression direction of the screw rod is consistent with that of the elastic element, the wedge is connected with the taper sleeve, a through hole is formed between the taper sleeve and the wedge, and the through hole is connected with the suspension device.
6. The elevator steel wire rope online monitoring and alarming system according to claim 1, wherein a wireless communication module connected with the data transmission device is arranged in the data acquisition device.
7. The elevator steel wire rope on-line monitoring and alarming system of claim 6, wherein when an elevator operation and maintenance worker works, the output module of the annular pressure sensor is connected with the mobile terminal, and is used for realizing that detection data is consulted through the mobile terminal.
8. The elevator steel wire rope online monitoring and alarming system according to claim 7, wherein the cloud platform server is arranged in an elevator monitoring center or is connected with a monitoring display screen of the elevator monitoring center through a network.
9. An on-line monitoring and alarming method for an elevator steel wire rope, which is applied to the on-line monitoring and alarming system for the elevator steel wire rope of any one of claims 1-8, and comprises the following steps:
measuring the tension of each steel wire rope based on a termination device and an annular pressure sensor on each steel wire rope;
the real-time data of each measured steel wire rope is transmitted to a cloud platform server through a data transmission device, and the cloud platform server compares the current measured value with a preset threshold value to judge whether the current elevator runs safely.
10. An on-line monitoring and alarming device for an elevator steel wire rope, which is characterized by comprising a module for executing the on-line monitoring and alarming method for the elevator steel wire rope according to claim 9.
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| CN202210305315.1A CN114538237A (en) | 2022-03-25 | 2022-03-25 | Elevator steel wire rope online monitoring alarm system, method and device |
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