CN102417129B - Dynamic safety monitoring device of brake and monitoring method - Google Patents
Dynamic safety monitoring device of brake and monitoring method Download PDFInfo
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- CN102417129B CN102417129B CN 201110279882 CN201110279882A CN102417129B CN 102417129 B CN102417129 B CN 102417129B CN 201110279882 CN201110279882 CN 201110279882 CN 201110279882 A CN201110279882 A CN 201110279882A CN 102417129 B CN102417129 B CN 102417129B
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Abstract
The invention relates to a dynamic safety monitoring device of a brake and a monitoring method; a central processing unit (CPU) main board, a load sensor, an encoder and a driving control module are respectively connected with an acquisition card; the acquisition card acquires the signals of the load sensor and the encoder in real time through an analog input interface; the CPU main board reads the data in relevant channels in the acquisition card and calculates to obtain the information of a current load value, brake speed and brake displacement; a keyboard, a memory and a display are respectively connected with the CPU main board; and the data of the self-weight W0 of a sling or a cage, a brake torque alarm coefficient E1, a brake torque fault coefficient E2 and a brake torque average stable coefficient E3 are input to the CPU main board through the keyboard. The method measures the actual working load, the brake speed and the corresponding brake distance of a crane or a lifter through a sensor, and calculates the brake torque and analyzes the safety performance of the brake. The invention can detect the braking performance of the brake in real time, and provides great help for improving the safety and the reliability of hoisting and lifting machinery and promoting the industrial level.
Description
Technical field
The present invention relates to lock torque on-the-spot real time monitoring, particularly a kind of drg dynamic security monitoring device and the method thereof of all kinds of hoisting cranes and building hoist drive system drg.
Background technology
Drg in the building hoist drive system is the important mechanism of elevator, the size of lock torque and the stable safe handling that is related to elevator, and relevant with the safety inefficacy at present safety misadventure has many.Crane hoisting system drg is according to the different regulations of crane type with the workplace, and the safety factor that safety factor is not less than 1.5 ~ 2.5, GB10054 " building hoist " predetermined brake device is not less than 1.75.In fact drg in use, the actual braking force square is constantly to change, and safety factor has only reflected the braking potential of drg, and the key factor relevant with crane safety with the drg working ability also comprises the release of stability, lock torque of lock torque and brake application time etc.It is not enough at the safety rate on kinetic force that static brake power when only relying on maintenance to adjust or brake safe coefficient rise mechanism from tomorrow.
At present the moment of lifting and lifting machinery lifting mechanism drg is generally only carried out Static Detection when the maintaining, because the difference of sound attitude friction coefficient, the observed reading of this method of inspection and actual condition are discrepant.Simultaneously, the safety that relies on only lock torque to carry out drg judges it also is inadequate.
In view of this, seek a kind of drg dynamic security monitoring device and method thereof and become pursuing one's goal of these those skilled in the art, it should be able to detect the drg deceleration and stopping performance in real time, to promoting the safe reliability of lifting and lifting machinery, advances the industry level to have bigger help.
Summary of the invention
Task of the present invention provides a kind of drg dynamic security monitoring device and method thereof, it has overcome the difficulty of prior art, by real work load, retro-speed and the corresponding stopping distance of sensor measurement hoisting crane or elevator, calculate lock torque and analyze the safety performance of drg.
Technical solution of the present invention is as follows:
A kind of drg dynamic security monitoring device, it comprises cpu motherboard, capture card, load transducer, coder, drive control module and keyboard, memory device and LCD display;
Described cpu motherboard, load transducer, coder and drive control module connect capture card respectively;
Described capture card is gathered the signal of load transducer and coder in real time by the analog input interface, and described cpu motherboard reads the data of related channel program in the capture card and calculates current load value, retro-speed, braking displacement information;
Described keyboard, memory device and telltale connect cpu motherboard respectively, and keyboard input suspender or cage deadweight W0, lock torque warning coefficient E1, lock torque fault coefficient E2 and the average margin of stability E3 of lock torque data are to cpu motherboard.
Described load transducer comprises crane rope, fixed pulley and adjustable pulley.
Described load transducer comprises reel, bearing cap shim and sensor.
Described load transducer comprises actuating device drawbar frame, elevator craning cage connecting panel, is installed on sensor and sensor locating plate between actuating device drawbar frame and the cage connecting panel.
A kind of drg dynamic security monitoring method may further comprise the steps:
(1) setup parameter is demarcated and braking;
(2) calculate current load value, current retro-speed, current stopping distance Li;
Whether (3) judge to demarcate sign is true, if, execution in step (4) then; If not, execution in step (6) then;
(4) above-mentioned computing value is stored to reference library;
(5) be masked as not execution in step (1);
(6) above-mentioned computing value is stored to the use storehouse, and according to current braking information interpolation calculation reference value Mk in reference library;
(7) whether judge (Mi-Mk)/Mk smaller or equal to E2%, if, execution in step (8) then; If not, execution in step (10) then;
(8) show lock torque failure message, buzzer warning and disconnect control circuit;
(9) repair and reset execution in step (1);
(10) whether judge (Mi-Mk)/Mk smaller or equal to E1%, if, execution in step (11) then; If not, execution in step (12) then;
(11) show lock torque information less than normal, buzzer warning;
(12) calculate nearest N1 Brake Mean Power square sum of errors standard deviation and be stored to data bank;
(13) whether error in judgement greater than E3%, if, execution in step (14) then; If not, execution in step (16) then;
(14) show the unstable information of lock torque, buzzer warning also disconnects control circuit, execution in step (1);
(15) repair and reset;
(16) nearest N2 lock torque analyzed drg life-span and demonstration, be stored to data bank, execution in step (1).
Described step (1) comprising:
(11) judge whether to revise parameter, if, execution in step (12) then; If not, execution in step (13) then;
(12) re-enter parameter;
(13) judge whether to demarcate, if, execution in step (14) then; If not, execution in step (15) then;
(14) be masked as very;
(15) judge whether to begin braking, if, execution in step (2) then; If not, execution in step (15) then.
Described method has by the statistics to lock torque average error and dispersion degree, analyzes the stability of drg and the function of reliability.
Described method can be calculated the residual life of brake bush from the rule that braking potential is changed in quality, and provides foundation for formulating maintenance schedule.
The present invention makes it compared with prior art owing to adopted above technical scheme, and drg dynamic security monitoring device of the present invention and method thereof have the following advantages:
1, the present invention can be under initial condition, to different hoisting capacities or load carrying ability, the hoisting crane of under friction speed, braking or elevator, obtain brake load value, retro-speed and braking displacement and deposit these data in data bank by load transducer, rotary encoder, as the right foundation of later lock torque monitoring rate.
2, the average braking that can calculate under this operating mode of the present invention adds/deceleration/decel, thereby obtain the average dynamic lock torque under this operating mode, this lock torque and the lock torque that is stored under the initial condition of drg in the chip are compared, and show the ratio of current lock torque value and initial value, show the relative loss value of lock torque.If brake monitoring moment is less than the E1% of normal value, monitoring system is sent the prompting of lock torque deficiency; If brake monitoring moment is less than the E2% of normal value, system will limit weight or upwards operation of cage, keep in repair again and will adjust until drg.
3, the present invention can monitor in real time and calculate the average dynamic lock torque of drg in each work operating mode, and compare with close operating mode, the average error of nearest N1 the lock torque of statistical analysis and root-mean-square error (RMS error), stability and the reliability of the work of analysis drg.When the repetition lock torque of system discovery drg was unstable, the prompting drg need overhaul signal.
4, the present invention is by monitoring and statistics to nearest N2 time similar operating mode deceleration and stopping performance, and the rule of changing in quality from braking potential is calculated the residual life of brake bush, for the formulation maintenance schedule provides foundation.
5, the present invention has by the statistics to lock torque average error and dispersion degree, analyzes the stability of drg and the function of reliability.
Description of drawings
Fig. 1 is that system of the present invention forms schematic diagram.
Fig. 2 is Crane Load sensor scheme drawing of the present invention.
Fig. 3 is Crane Load sensor scheme of installation of the present invention.
Fig. 4 is load of elevator sensor scheme drawing of the present invention.
Fig. 5 is for pressing left view shown in Figure 4.
Fig. 6 is operational flow diagram of the present invention.
Reference numeral:
1 is cpu motherboard, and 2 is capture card, and 3 is keyboard, and 4 is memory device, 5 is LCD display, and 6 is load transducer, and 7 is coder, 8 is drive control module, and 9 is crane rope, and 10 is fixed pulley, 11 is adjustable pulley, and 12 is reductor, and 13 is reel, 14 is bearing cap shim, and 15 is sensor, and 16 is the actuating device drawbar frame, 17 is the elevator craning cage connecting panel, and 18 is sensor, and 19 is the sensor locating plate.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is elaborated.
Referring to Fig. 1, the invention provides a kind of drg dynamic security monitoring device, it mainly is made up of cpu motherboard 1, capture card 2, load transducer 6, coder 7, drive control module 8 and keyboard 3, memory device 4 and LCD display 5.
Cpu motherboard 1, load transducer 6, coder 7 and drive control module 8 connect capture card 2 respectively.Capture card 2 is gathered the signal of load transducer 6 and coder 7 in real time by the analog input interface, and cpu motherboard 1 reads the data of related channel program in the capture card 2 and calculates information such as current load value, retro-speed, braking displacement.
Keyboard 3, memory device 4 and LCD display 5 connect cpu motherboard 1 respectively, and keyboard 3 input suspenders or cage deadweight W0, lock torque warning coefficient E1, lock torque fault coefficient E2 and the average margin of stability E3 of lock torque data are to cpu motherboard 1.
Referring to Fig. 2, load transducer 6 comprises crane rope 9, fixed pulley 10 and adjustable pulley 11.
Referring to Fig. 3, load transducer 6 comprises reductor 12, reel 13, bearing cap shim 14 and sensor 15.
Referring to Fig. 4 and Fig. 5, load transducer 6 comprises actuating device drawbar frame 16, elevator craning cage connecting panel 17, is installed on sensor 18 and sensor locating plate 19 between actuating device drawbar frame 16 and the cage connecting panel 17.
Referring to Fig. 6, the present invention also provides a kind of drg dynamic security monitoring method, and it may further comprise the steps:
(1) setup parameter is demarcated and braking.
(2) calculate current load value, current retro-speed, current stopping distance Li.
Whether (3) judge to demarcate sign is true, if, execution in step (4) then; If not, execution in step (6) then.
(4) above-mentioned computing value is stored to reference library.
(5) be masked as not execution in step (1).
(6) above-mentioned computing value is stored to the use storehouse, and according to current braking information interpolation calculation reference value Mk in reference library.
(7) whether judge (Mi-Mk)/Mk smaller or equal to E2%, if, execution in step (8) then; If not, execution in step (10) then.
(8) show the lock torque failure message, buzzer warning also disconnects control circuit.
(9) repair and reset execution in step (1).
(10) whether judge (Mi-Mk)/Mk smaller or equal to E1%, if, execution in step (11) then; If not, execution in step (12) then.
(11) show lock torque information less than normal, buzzer warning.
(12) calculate nearest N1 Brake Mean Power square sum of errors standard deviation and be stored to data bank.
(13) whether error in judgement greater than E3%, if, execution in step (14) then; If not, execution in step (16) then.
(14) show the unstable information of lock torque, buzzer warning also disconnects control circuit, execution in step (1).
(15) repair and reset.
(16) nearest N2 lock torque analyzed drg life-span and demonstration, be stored to data bank, execution in step (1).
Described step (1) comprising:
(11) judge whether to revise parameter, if, execution in step (12) then; If not, execution in step (13) then.
(12) re-enter parameter.
(13) judge whether to demarcate, if, execution in step (14) then; If not, execution in step (15) then.
(14) be masked as very.
(15) judge whether to begin braking, if, execution in step (2) then; If not, execution in step (15) then.
The actual occupation mode of drg dynamic security monitoring device of the present invention and method thereof is as follows:
As shown in Figure 1, this drg dynamic security monitoring device can be made up of cpu motherboard 1, capture card 2, keyboard 3, memory device 4, LCD display 5, load transducer 6, coder 7 and drive control module 8 etc.Coder is connected with the drive system turning cylinder, can be installed in the appropriate location of turning cylinder end.Lifted load is measured by load transducer and is realized, load transducer can adopt the other compression and tension sensor of steel rope, also can adopt axial pin type sensor or reel bearing sensor, and Fig. 3 is seen in the installation signal of load transducer.Cpu motherboard 1, capture card 2, keyboard 3, memory device 4, LCD display 5 can be integrated into one and be installed in the operator's compartment, and load transducer 6 is connected with capture card 2 by cable with coder 7.
Capture card 2 is gathered the signal of load transducer 6 and coder 7 in real time by the analog input interface, and cpu motherboard 1 reads the data of related channel program in the capture card 2 and calculates information such as current load value, retro-speed, braking displacement.
Fig. 2 is hoist rope side-compression load transducer, is made up of crane rope 9, fixed pulley 10 and adjustable pulley 11.
Fig. 3 is a kind of reel abutment pressure sensing crane load transducer scheme of installation, is made up of reductor 12, reel 13, bearing cap shim 14, sensor 15 etc.
Fig. 4, Fig. 5 have shown a kind of axial pin type elevator craning cage load transducer, are made up of actuating device drawbar frame 16, elevator craning cage connecting panel 17, the sensor 18, the sensor locating plate 19 that are installed between actuating device drawbar frame 16 and the cage connecting panel 17.
Operation sheet of the present invention is seen Fig. 6.System is divided into initial parameter setting, reference library foundation and modification, three parts of drg safety monitoring, and display panel is corresponding with above three interfaces.After system's operation, can selective system enter which part by operation keyboard 3.
(1) if select the initial parameter setting, read-out shows corresponding interface, and can be by keyboard 3 input suspenders or cage deadweight W0, lock torque warning coefficient E1, lock torque fault coefficient E2 and the average margin of stability E3 of lock torque equivalence.
(2) if select reference library to set up and modify feature, read-out shows that corresponding reference library sets up the interface, working load and braking displacement that this moment is corresponding different, respectively by load transducer and displacement encoder by calculate with format conversion after data are saved in the memory device 4 automatically, as the comparison data.The data of reference library comprise zero load and full-loading condition value at least in principle, look and can set a certain amount of middle operating mode to the needs of this device operating accuracy, and set point is more many, and the device operating accuracy is more high.
(3) just can enter normal drg security monitoring state after above selection is finished, after capture card 2 detects the drg speed-slackening signal by drive control module 8, cpu motherboard 1 recording clock signal, the counting machine passage in the capture card 2 always the signal of record coding device 7 until end of braking.Cpu motherboard 1 reads the data of counting machine related channel program in the capture card 2 and calculates parameters such as braking displacement under current load, retro-speed, the current retro-speed, braking average acceleration and braking peak acceleration after the end of braking, thereby calculate judging characteristic parameter such as Brake Mean Power square Mi and maximum braking moment Mmax under the current load, simultaneously these parameters are deposited in holder and be used for the judgement of drg working stability and the prediction of work life.
From reference library, find out with the immediate data of this operating mode according to current braking information and to use method of interpolation to calculate reference point and compare with Mk:
If (Mi-Mk)/and Mk≤E2%, by LCD display 5 output lock torque failure messages, continue to report to the police by buzzer phone, drive control module 8 automatic cutout driving circuits just can be reworked by keyboard 3 resetting systems after needing examine and maintenance to finish.
If (Mi-Mk)/and Mk≤E1%, by LCD display 5 output lock torques information less than normal, carry out intermittence by buzzer phone and report to the police.
Each braking information is all preserved automatically, so that former use library information is upgraded.Cpu motherboard 1 reads nearest N1 lock torque information from the use storehouse of memory device 4, calculating is with respect to the aviation value of reference value error and be stored to memory device 4, above-mentioned nearest N1 Brake Mean Power square mean square error and setting value E3 are compared, if mean square error〉during E3%, by the unstable information of LCD display 5 output lock torques, buzzer phone continues to report to the police, and drive control module 8 disconnects driving circuit simultaneously, should carry out inspection and maintenance.Must just can work on by keyboard 3 resetting systems after finishing in inspection, maintenance.
The present invention has the forecast function to drg work life or service interval.Nearest N2 lock torque analyzed in 1 pair of use of cpu motherboard library information, and adopt the curve fitting method to judge downswing and the descending speed of lock torque, the estimation matched curve reaches the worked number of times of lock torque low extreme value, and according to the statistics reckoning service interval to the drg frequency of utilization, reach the prediction purpose in service life.
In sum, the present invention is by real work load, retro-speed and the corresponding stopping distance of sensor measurement hoisting crane or elevator, calculates lock torque and analyzes the safety performance of drg.Adopt drg dynamic security monitoring device of the present invention and method thereof, can detect the drg deceleration and stopping performance in real time, to promoting the safe reliability of lifting and lifting machinery, advance the industry level to have bigger help.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment only is that the present invention is described, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of above-described embodiment, modification etc.
Claims (8)
1. drg dynamic security monitoring device, it is characterized in that: it comprises cpu motherboard, capture card, load transducer, coder, drive control module and keyboard, memory device and LCD display;
Described cpu motherboard, load transducer, coder and drive control module connect capture card respectively;
Described capture card is gathered the signal of load transducer and coder in real time by the analog input interface, and described cpu motherboard reads the data of related channel program in the capture card and calculates current load value, retro-speed, braking displacement information;
Described keyboard, memory device and telltale connect cpu motherboard respectively, and keyboard input suspender or cage deadweight W0, lock torque warning coefficient E1, lock torque fault coefficient E2 and the average margin of stability E3 of lock torque data are to cpu motherboard.
2. drg dynamic security monitoring device as claimed in claim 1, it is characterized in that: described load transducer comprises crane rope, fixed pulley and adjustable pulley.
3. drg dynamic security monitoring device as claimed in claim 1, it is characterized in that: described load transducer comprises reel, bearing cap shim and sensor.
4. drg dynamic security monitoring device as claimed in claim 1, it is characterized in that: described load transducer comprises actuating device drawbar frame, elevator craning cage connecting panel, is installed on sensor and sensor locating plate between actuating device drawbar frame and the cage connecting panel.
5. a drg dynamic security monitoring method is characterized in that, may further comprise the steps:
(1) setup parameter is demarcated and braking;
(2) calculate current load value, current retro-speed, current stopping distance Li;
Whether (3) judge to demarcate sign is true, if, execution in step (4) then; If not, execution in step (6) then;
(4) above-mentioned computing value is stored to reference library;
(5) be masked as not execution in step (1);
(6) above-mentioned computing value is stored to the use storehouse, and according to current braking information interpolation calculation reference value Mk in reference library;
(7) whether judge (Mi-Mk)/Mk smaller or equal to E2%, if, execution in step (8) then; If not, execution in step (10) then;
(8) show lock torque failure message, buzzer warning and disconnect control circuit;
(9) repair and reset execution in step (1);
(10) whether judge (Mi-Mk)/Mk smaller or equal to E1%, if, execution in step (11) then; If not, execution in step (12) then;
(11) show lock torque information less than normal, buzzer warning;
(12) calculate nearest N1 Brake Mean Power square sum of errors standard deviation and be stored to data bank;
(13) whether error in judgement greater than E3%, if, execution in step (14) then; If not, execution in step (16) then;
(14) show the unstable information of lock torque, buzzer warning also disconnects control circuit, execution in step (1);
(15) repair and reset;
(16) nearest N2 lock torque analyzed drg life-span and demonstration, be stored to data bank, execution in step (1);
Wherein: Mi is Brake Mean Power square under the current load, and Mk is reference value, and E1 is lock torque warning coefficient, E2 is lock torque fault coefficient, E3 is the average margin of stability of lock torque, and N1 is the lock torque average error, and N2 is that lock torque is analyzed the drg life-span.
6. drg dynamic security monitoring method as claimed in claim 5 is characterized in that, described step (1) comprising:
(1.1) judge whether to revise parameter, if, execution in step (1.2) then; If not, execution in step (1.3) then;
(1.2) re-enter parameter;
(1.3) judge whether to demarcate, if, execution in step (1.4) then; If not, execution in step (1.5) then;
(1.4) be masked as very;
(1.5) judge whether to begin braking, if, execution in step (2) then; If not, execution in step (1.5) then.
7. drg dynamic security monitoring method as claimed in claim 5 is characterized in that, described method has by the statistics to lock torque average error and dispersion degree, analyzes the stability of drg and the function of reliability.
8. drg dynamic security monitoring method as claimed in claim 5 is characterized in that, described method can be calculated the residual life of brake bush from the rule that braking potential is changed in quality, and provides foundation for formulating maintenance schedule.
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| CN 201110279882 CN102417129B (en) | 2011-09-21 | 2011-09-21 | Dynamic safety monitoring device of brake and monitoring method |
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| CN 201110279882 CN102417129B (en) | 2011-09-21 | 2011-09-21 | Dynamic safety monitoring device of brake and monitoring method |
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| CN102417129A CN102417129A (en) | 2012-04-18 |
| CN102417129B true CN102417129B (en) | 2013-08-07 |
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Cited By (1)
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| RU2771521C1 (en) * | 2021-10-11 | 2022-05-05 | Валентин Алексеевич Потапов | Cargo load limiter |
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| CN103939507B (en) * | 2014-04-03 | 2017-01-04 | 中联重科股份有限公司 | A kind of method and apparatus that the stopping power of brake is detected |
| CN104192662B (en) * | 2014-07-25 | 2016-12-07 | 杭州优迈科技有限公司 | A kind of detection method of elevator brake braking moment |
| CN105438909A (en) * | 2014-08-14 | 2016-03-30 | 苏州乐途电梯有限公司 | Self-testing method for braking force of brake |
| CN104340801B (en) * | 2014-09-29 | 2017-09-12 | 北京市特种设备检测中心 | It is a kind of with elevator braking system faults method for early warning |
| CN105270956B (en) * | 2015-11-30 | 2017-06-23 | 中联重科股份有限公司 | The monitoring system and monitoring method of elevator brake slippage and traction sheave slippage |
| CN105384030B (en) * | 2015-12-23 | 2018-07-20 | 日立楼宇技术（广州）有限公司 | The detection method and system of brake sticking brake torque |
| CN108045366A (en) * | 2017-12-07 | 2018-05-18 | 北京经纬恒润科技有限公司 | A kind of method and system for monitoring brake strip remaining life |
| WO2019207647A1 (en) * | 2018-04-24 | 2019-10-31 | 三菱電機株式会社 | Brake deterioration assessment device and brake deterioration assessment system |
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| CN112478969B (en) * | 2020-11-20 | 2022-02-11 | 浙江理工大学 | Elevator failure prediction method based on brake torque analysis |
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| RU2771521C1 (en) * | 2021-10-11 | 2022-05-05 | Валентин Алексеевич Потапов | Cargo load limiter |
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