CN102417129A - 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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- CN102417129A CN102417129A CN2011102798826A CN201110279882A CN102417129A CN 102417129 A CN102417129 A CN 102417129A CN 2011102798826 A CN2011102798826 A CN 2011102798826A CN 201110279882 A CN201110279882 A CN 201110279882A CN 102417129 A CN102417129 A CN 102417129A
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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 the lock torque on-site real-time monitoring technology of all kinds of hoisting cranes and building hoist drive system drg, particularly a kind of drg dynamic security monitoring device and method thereof.
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, existing many of relevant with the safety inefficacy at present safety misadventure.Crane hoisting system drg is according to the different regulations of crane type with the workplace, and safety factor is not less than 1.5 ~ 2.5, and the safety factor of 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 release and the brake application time etc. of stability, the lock torque of lock torque.It is not enough at the safety rate on kinetic force that static brake power when only relying on the maintenance adjustment 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; Through 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 following:
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;
Said cpu motherboard, load transducer, coder and drive control module connect capture card respectively;
Said capture card is gathered the signal of load transducer and coder in real time through the analog input interface, and said cpu motherboard reads the data of related channel program in the capture card and calculates current load value, retro-speed, braking displacement information;
Said 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.
Said load transducer comprises crane rope, fixed pulley and adjustable pulley.
Said load transducer comprises reel, bearing cap shim and sensor.
Said 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) the aforementioned calculation value is stored to reference library;
(5) be masked as not execution in step (1);
(6) the aforementioned calculation 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 break off 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 breaks off 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).
Said 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.
Said method has through the statistics to lock torque average error and dispersion degree, analyzes the stability of drg and the function of reliability.
Said method can be calculated the residual life of brake bush from the rule that braking potential is changed in quality, and for formulating maintenance schedule foundation is provided.
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 through 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 not enough prompting of lock torque; 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 and calculate the average dynamic lock torque of drg in each work operating mode in real time; And compare with close operating mode; The average error of nearest N1 the lock torque of statistical analysis and RM.S error, the 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 through 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 through 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 a Crane Load sensor scheme drawing of the present invention.
Fig. 3 is a Crane Load sensor scheme of installation of the present invention.
Fig. 4 is a load of elevator sensor scheme drawing of the present invention.
Fig. 5 is for pressing left view shown in Figure 4.
Fig. 6 is an 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, and 5 is LCD display; 6 is load transducer, and 7 is coder, and 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, and 14 is bearing cap shim, and 15 is sensor; 16 is the actuating device drawbar frame, and 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 accompanying drawing and embodiment 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 through 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) the aforementioned calculation value is stored to reference library.
(5) be masked as not execution in step (1).
(6) the aforementioned calculation 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 breaks off 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 breaks off 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).
Said 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 following:
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 through 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 through cable with coder 7.
Capture card 2 is gathered the signal of load transducer 6 and coder 7 in real time through 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 a 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 get into which part through operation keyboard 3.
(1) if select the initial parameter setting, read-out shows corresponding interface, and can be equivalent through 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.
(2) if select reference library to set up and modify feature; Read-out shows that corresponding reference library sets up the interface; This moment corresponding different working load and braking displacement; Respectively by load transducer and displacement encoder through 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 many more, and the device operating accuracy is high more.
(3) the above selection just can get into normal drg security monitoring state after the completion; After capture card 2 detects the drg speed-slackening signal through 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 the parameters such as braking displacement, braking average acceleration and braking peak acceleration under current load, retro-speed, the current retro-speed 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, deposit these parameters in holder simultaneously and be used for the judgement of drg working stability and the prediction of work life.
Find out from reference library according to current braking information and to calculate reference point with the immediate data of this operating mode utilization method of interpolation and compare with Mk:
If (Mi-Mk)/and Mk≤E2%, through LCD display 5 output lock torque failure messages, continue to report to the police through buzzer phone, drive control module 8 automatic cutout driving circuits just can be reworked through keyboard 3 resetting systems after needing examine and maintenance to finish.
If (Mi-Mk)/and Mk≤E1%, through LCD display 5 output lock torques information less than normal, carry out intermittence through 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 is compared, if mean square error>during E3%; Through the unstable information of LCD display 5 output lock torques; Buzzer phone continues to report to the police, and drive control module 8 breaks off driving circuit simultaneously, should carry out inspection and maintenance.Must just can work on through 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 the method that adopts curve fitting is judged the 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, reach the prediction purpose in service life according to statistics reckoning service interval to the drg frequency of utilization.
In sum, the present invention is through 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,, advance the industry level to have bigger help promoting the safe reliability of lifting and lifting machinery.
Certainly; Those skilled in the art in the present technique field will be appreciated that; The foregoing description only is to be used for explaining the present invention; And be not with opposing qualification of the present 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 the foregoing description, 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;
Said cpu motherboard, load transducer, coder and drive control module connect capture card respectively;
Said capture card is gathered the signal of load transducer and coder in real time through the analog input interface, and said cpu motherboard reads the data of related channel program in the capture card and calculates current load value, retro-speed, braking displacement information;
Said 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 is characterized in that: said 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: said load transducer comprises reel, bearing cap shim and sensor.
4. drg dynamic security monitoring device as claimed in claim 1 is characterized in that: said 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) the aforementioned calculation value is stored to reference library;
(5) be masked as not execution in step (1);
(6) the aforementioned calculation 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 break off 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 breaks off 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).
6. drg dynamic security monitoring method as claimed in claim 5 is characterized in that, said 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.
7. drg dynamic security monitoring method as claimed in claim 5 is characterized in that said method has through 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, said method can be calculated the residual life of brake bush from the rule that braking potential is changed in quality, and for formulating maintenance schedule foundation is provided.
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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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| CN102417129B CN102417129B (en) | 2013-08-07 |
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