CN100485334C - Tester for analyzing stress uniformity for elevator towing steel rope - Google Patents
Tester for analyzing stress uniformity for elevator towing steel rope Download PDFInfo
- Publication number
- CN100485334C CN100485334C CNB2006100687438A CN200610068743A CN100485334C CN 100485334 C CN100485334 C CN 100485334C CN B2006100687438 A CNB2006100687438 A CN B2006100687438A CN 200610068743 A CN200610068743 A CN 200610068743A CN 100485334 C CN100485334 C CN 100485334C
- Authority
- CN
- China
- Prior art keywords
- pin
- chip microcomputer
- resistance
- capacitor
- wire rope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to a tension uniformity analyzer of lifter drawing steel line, wherein said tester uses photoelectric detector to collect the vibration period of each steel line, and transforms the period into vibration frequency to be stored into the memory of single chip; based on the function relation between said frequency and tension, calculating out the tension percentage of each steel line; displaying the result on the LED. The invention can avoid force tester and steel rule, with simple operation. And it uses the vibration period to obtain the tension information, with high repeatability. And the single chip can display the result quickly, to improve the testing result.
Description
Technical field
The present invention relates to a kind of instrument of analyzing its even tension degree by the vibration period of measuring elevator traction wire rope (hereinafter to be referred as wire rope), be fit to the even tension situation of each root wire rope of tracking-driven elevator is analyzed, and demonstrate the deviation of tension force and all steel wire rope tension mean values of each root wire rope with the form of number percent.
Background technology
The degree of uniformity of elevator traction steel wire rope tension directly influences serviceable life of elevator wire rope and traction sheave.Domestic measuring method mainly is to carry out conjunction measuring by tautness meter and straight steel ruler at present, at first with last 2/3rds positions of elevator cage operation to stroke, the testing staff is on elevator sedan-chair top, the tension value when measuring each root wire rope respectively and be pulled same distance with tautness meter.This method is because of operating difficulties, so measuring accuracy is difficult to guarantee.And after detection finishes, also to utilize counter to calculate the number percent of each root steel wire rope tension deviation average, and can judge whether the tension force of each root wire rope meets the demands, efficient is difficult to improve.
Summary of the invention
Task of the present invention is on the basis that guarantees measuring accuracy, provides a kind of easy to operate, and can calculate a kind of measurement and analysis instrument of each root steel wire rope tension deviation percent automatically.
Task of the present invention is finished as follows: the vibration period of gathering each root wire rope by the photoelectric probe on the instrument, and be stored in the internal memory of single-chip microcomputer after each cycle is converted to vibration frequency, calculate the percent strain value of each root wire rope again by the funtcional relationship of this frequency and tension force, demonstrate the result by the LED on the instrument at last.Because this analysis instrument has been completely free of tautness meter and straight steel ruler, and is easy to operate during measurement.Again because obtain the tension information of each root wire rope by the vibration period of measuring steel wire rope, so measurement result has the reappearance of height, is not subjected to the influence of survey crew subjective factor.After measurement was finished, the single-chip microcomputer of instrument internal can provide net result rapidly, and therefore, detection efficiency improves greatly.
It detects principle: drive elevator when stationary state owing to drag, each root wire rope is equivalent to vibratory string one by one, and its tension force T and vibration frequency f are following funtcional relationship:
f＝1/(21)√T/ρ
Wherein 1 is the length of vibratory string, and ρ is the line density of vibratory string.
Following formula is done a conversion to be got:
T＝41
2?ρ?f
2
If a=41
2ρ, then following formula is converted to:
T＝af
2
Because when elevator remains static, 1, ρ is all constant, so a also is a constant.
Establish the total n root wire rope of elevator again, then its tension force mean value T is flat is:
T
Flat=a (f
1 2+ f
2 2+ f
3 2+ ... + f
n 2)/n
The tension force T of single wire rope
iDepart from tension force mean value T
FlatNumber percent P
iFor:
P
i=(T
i-T
Flat)/T
Flat* 100%
=(T
i/ T
Flat-1) * 100%
＝{f
i 2/[(f
1 2+f
2 2+f
3 2+…+f
n 2)/n]-1}×100％
This shows, want to ask for the tension force deviation percent P of single wire rope
i, only need measure vibration frequency (or cycle) value of each root wire rope, and know that the radical n of wire rope gets final product.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of tester for analyzing stress uniformity when elevator dragging steel rope;
Fig. 2 is the tester for analyzing stress uniformity when elevator dragging steel rope circuit theory diagrams.
Embodiment
Be described in further detail below in conjunction with the tester for analyzing stress uniformity when elevator dragging steel rope of accompanying drawing invention.
The vibration period of adopting photoelectric probe to gather each root wire rope respectively, to be converted to the vibration period in the internal memory that vibration frequency is stored in single-chip microcomputer, calculate the percent strain value of each root wire rope by the funtcional relationship of vibration frequency and tension force, demonstrate the result by light-emitting diode display at last, the structure of instrument is by housing 2, detection probe and testing circuit are formed, the limit portion of housing 2 is provided with two detection probe of being made by metal side tube 1, the detection probe opposed inside is respectively arranged with infrared-emitting diode and infrared receiving diode, and the meter panel on the housing 1 is provided with power switch K, photodetection power light D, nixie display LED and control button AN1-AN5;
Testing circuit is made up of single-chip microcomputer IC1, photoelectric signal processing circuit IC2, resistance R 1-R5, capacitor C 1-C4, K switch, triode Q1-Q5, charactron LED, crystal T, infrared receiving diode D2 and infrared electro emitting diode D1, wherein 1-8 pin of 1-8 pin of single-chip microcomputer IC1 and charactron LED join, 21 pin also connect the emitter of triode Q1-Q5,31 pin connect positive source, and 36-40 pin of single-chip microcomputer IC1 are gone here and there the base stage that meets triode Q1-Q5 after the current-limiting resistance R6-R10 series connection respectively; The collector of triode Q1-Q5 connects 9-12 pin of charactron LED respectively, the 9 pin crosstalks of single-chip microcomputer IC1 are held C1 and are connect positive source, K switch and capacitor C 1 also connect, 12-16 pin of single-chip microcomputer IC1 are gone here and there pushbutton switch AN1-AN5 ground connection respectively, crystal T is attempted by between 18-19 pin of integrated circuit (IC) 1, capacitor C 3, C4 is serially connected in the two ends of crystal T, capacitor C 3, the intermediate contact of C4 and ground connection, 4 of photoelectric signal processing circuit IC2,6 pin connect 18 pin of IC1,3 of IC2,7 pin also connect back crosstalk resistance R5 ground connection, C2 ground connection is held in the 8 pin crosstalks of IC2, resistance R 4, R3 is serially connected between 2 pin and 5 pin of IC2, resistance R 4, the intermediate contact string infrared receiving diode D2 ground connection of R3, infrared electro emitting diode D1 crosstalk resistance R2 meets power supply VCC, integrated circuit (IC) 1,4 pin of IC2,5 pin also meet power supply VCC, and capacitor C 1 resistance R 1 is serially connected between 9 pin and ground wire of IC1, and the intermediate contact of capacitor C 1 resistance R 1 meets power supply VCC.
It is in foursquare hollow metal pipe 1 chamber that infrared-emitting diode D1 and infrared receiving diode D2 are oppositely arranged on two shape of cross sections respectively, hollow metal pipe 1 links together with Instrument shell 2, circuit board and battery are arranged among the Instrument shell 2, and charactron LED, K switch and pushbutton switch AN1-AN5 are set on the panel of Instrument shell 2.
One chip microcomputer adopts the singlechip microprocessor of AT8951 or AT8952 model.
5 LED charactrons are adopted in the demonstration of data.
Embodiment
In the design of instrument, adopting two shape of cross sections is that the Electro-Optical Sensor Set that foursquare hollow metal pipe is formed is moulded the top of casting at insulation crust.For guaranteeing the constant intensity of two metal tubes, make this Electro-Optical Sensor Set not only play the effect of surveying the wire rope vibration period, and can also get rid of of the interference of next door wire rope to tested wire rope, before moulding casting preferably with two metal tubes mould casting part with metal solder or be riveted together, the exposed parts length suggestion of two metal tubes reaches 200mm.At opening place, the centre position of two metal tube exposed parts, be equiped with infrared electro emitting diode and infrared receiving diode respectively.Be provided with 5 LED charactrons in the middle and upper part of insulation crust, in order to the various information of display analysis instrument.Wherein left several first, in order to show the sequence number of tested wire rope; A left side several second duty (detected state exclusive disjunction state) in order to the display analysis instrument; Last three periodic quantity (when detected state) or percent value (when compute mode) that show tested wire rope.Below charactron, be the keyboard of analyser, its concrete function is referring to the associated description among Fig. 1.
Circuit adopts direct current 3V-6V power supply power supply (No. 7 alkaline batteries of 4 joints are adopted in suggestion), after total power switch K1 connects, infrared-emitting diode D1 with start working after current-limiting resistance R2 connects.Meanwhile, infrared receiving diode D2 and biasing resistor R3 send the supply voltage dividing potential drop into 555 photoelectric signal processing circuit IC2 after the filtering of resistance R 5 and ceramic disc capacitor C2.When infrared receiving diode D2 can receive the irradiation of infrared-emitting diode D1, its resistance will diminish, and make the output terminal 3 of 555 time base circuit IC2 be high level; Otherwise when infrared receiving tube D2 can not receive the irradiation of infrared-emitting diode D1, its resistance will become greatly, make the output terminal 3 of 555 photoelectric signal processing circuit IC2 be low level.This high-low level pulse signal behind the current-limiting resistance R5 that can also flow through is lighted luminotron D or is extinguished when being admitted to 17 pin of microprocessor 89C51.
For the collection of the pulse signal of 17 pin that are connected to microprocessor 89C51, control by its inner program fully.
Total power switch K and pushbutton switch AN1, electrochemical capacitor C1 and resistance R 1 have been formed electrify restoration circuit and the manual reset circuit of 89C51.Ceramic disc capacitor C3, C4 and quartz crystal oscillator T have formed the oscillating circuit of microprocessor.The keyboard control circuit of forming by 4 normally open push button switch AN2, AN3, AN4, AN5, inserted the 12-16 pin of 89C51 respectively, its common port links to each other with the negative pole of power supply, as long as arbitrary button is pressed, the 89C51 of this button inserts pin all will be changed to low level, thereby realize the judgement to each button state of keyboard.
The display circuit of instrument has adopted 5 anode LED charactrons altogether, it shows the display mode that adopts turntable driving, a, b, c, d, e, f, g and radix point ". " pin with every LED charactron is connected in parallel one to one respectively, inserts the 1-8 pin of single-chip microcomputer 89C51 successively.The power amplification of signal through 5 NPN type triode Q1, Q2, Q3, Q4, Q5 selected in position from 36-40 pin of single-chip microcomputer 89C51, its emitter is connected with the anode (position choosing end) of 5 LED charactrons respectively, has realized the timesharing of LED charactron is selected to drive.
The model of photoelectric signal processing circuit IC2 is selected 555 integrated circuit for use.
The housing of instrument adopts injection moulding to be processed into, and other electronic devices and components are the commercially available prod.
When using this instrument to measure, elevator should be stopped at the correct position place, in the sedan-chair top heavy side is opened instrument, wire rope usefulness to be measured is pulled in the Electro-Optical Sensor Set of instrument, press test button and keep instrument stabilizer, unclamp the wire rope that is drawn into then, make its Electro-Optical Sensor Set internal vibration at instrument, after finishing a complete vibration period, the LED charactron of instrument will demonstrate the vibration period of this root wire rope immediately.Press the sequence number of instrument then and regulate button, the vibration period of measuring other each root wire rope respectively.After all wire rope detect and finish, press the state exchange button on the instrument, make it to be converted to compute mode, the LED charactron of instrument will demonstrate the tension force deviation percent of first wire rope immediately at this moment, regulate button by the sequence number of pressing instrument, the LED charactron will demonstrate the tension force deviation percent value of other each root wire rope.
Claims (3)
1, tester for analyzing stress uniformity when elevator dragging steel rope, it is characterized in that tester is made up of housing, infrared receiving diode D2, infrared electro emitting diode D1 and testing circuit, the infrared photodiode that employing is made up of infrared receiving diode D2 and infrared electro emitting diode D1, gather the vibration period of each root wire rope respectively, to be converted to the vibration period in the internal memory that vibration frequency is stored in single-chip microcomputer, by the funtcional relationship of vibration frequency and tension force
Calculate the percent value of tension force and all steel wire rope tension mean deviations of each root wire rope, demonstrate test result by charactron LED at last; Symbol T in the funtcional relationship represents tension force; F represents vibration frequency; L represents the length of vibratory string; ρ represents the line density of vibratory string;
Testing circuit is made up of single-chip microcomputer IC1,555 photoelectricity processor IC2, resistance R 1-R5, capacitor C 1-C4, K switch, triode Q1-Q5, charactron LED, crystal T, wherein 1-8 pin of 1-8 pin of single-chip microcomputer IC1 and charactron LED join, 21 pin also connect the emitter of triode Q1-Q5,31 pin connect positive source, and 36-40 pin of single-chip microcomputer IC1 are gone here and there the base stage that meets triode Q1-Q5 after the current-limiting resistance R6-R10 series connection respectively; The collector of triode Q1-Q5 connects 9-12 pin of charactron LED respectively, the 9 pin crosstalks of single-chip microcomputer IC1 are held C1 and are connect positive source, K switch and capacitor C 1 also connect, 12-16 pin of single-chip microcomputer IC1 are gone here and there pushbutton switch AN1-AN5 ground connection respectively, crystal T is attempted by between 18-19 pin of single-chip microcomputer IC1, capacitor C 3, C4 is serially connected in the two ends of crystal T, capacitor C 3, the intermediate contact of C4 and ground connection, 4 of 555 photoelectricity processor IC2,6 pin connect 18 pin of single-chip microcomputer IC1,3 of 555 photoelectricity processor IC2,7 pin also connect back crosstalk resistance R5 ground connection, C2 ground connection is held in the 8 pin crosstalks of 555 photoelectricity processor IC2, resistance R 4, R3 is serially connected between 2 pin and 5 pin of IC2, resistance R 4, the intermediate contact string infrared receiving diode D2 ground connection of R3, infrared electro emitting diode D1 crosstalk resistance R2 meets power supply VCC, single-chip microcomputer IC1,4 pin of 555 photoelectricity processor IC2,5 pin also meet power supply VCC, and capacitor C 1 resistance R 1 is serially connected between 9 pin and ground wire of single-chip microcomputer IC1, and the intermediate contact of capacitor C 1 resistance R 1 meets power supply VCC.
2. analysis tester according to claim 1, it is characterized in that it is in the foursquare hollow metal tube chamber that infrared receiving diode D2, infrared electro emitting diode D1 are oppositely arranged on two shape of cross sections respectively, hollow metal pipe and Instrument shell link together, circuit board and battery are arranged among the housing of instrument, and charactron LED, power switch K and pushbutton switch AN1-AN5 are set on the panel of Instrument shell.
3. analysis tester according to claim 2 is characterized in that 5 charactron LED are adopted in the demonstration of data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100687438A CN100485334C (en) | 2006-09-04 | 2006-09-04 | Tester for analyzing stress uniformity for elevator towing steel rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100687438A CN100485334C (en) | 2006-09-04 | 2006-09-04 | Tester for analyzing stress uniformity for elevator towing steel rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1920506A CN1920506A (en) | 2007-02-28 |
| CN100485334C true CN100485334C (en) | 2009-05-06 |
Family
ID=37778276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100687438A Expired - Fee Related CN100485334C (en) | 2006-09-04 | 2006-09-04 | Tester for analyzing stress uniformity for elevator towing steel rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100485334C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710031B (en) * | 2009-12-11 | 2011-03-09 | 江苏省电力公司镇江供电公司 | Ladder detection device |
| CN102101618B (en) * | 2009-12-22 | 2015-05-13 | 中国建筑科学研究院建筑机械化研究分院 | Method and system for detecting wire ropes of elevator |
| CN103123287A (en) * | 2011-11-18 | 2013-05-29 | 广西玉柴机器股份有限公司 | Tension detection device of engine belt and detection method utilizing same |
| CN102494828B (en) * | 2011-11-24 | 2013-08-21 | 中国矿业大学 | Longitudinal capacitive steel wire rope tension detection method and apparatus thereof |
| CN103359565B (en) * | 2012-04-06 | 2016-04-06 | 富士达株式会社 | The cable strain measuring method of elevator and device |
| EP2893330B1 (en) * | 2012-09-04 | 2022-11-16 | Teijin Aramid B.V. | Method for non-destructive testing of synthetic ropes and rope suitable for use therein |
| CN105698997B (en) * | 2014-11-28 | 2018-04-17 | 巨大机械工业股份有限公司 | The strain measuring method and its system of wheel steel wire |
| CN107973195A (en) * | 2017-12-12 | 2018-05-01 | 中国矿业大学 | A kind of method that lifting system load-carrying is confirmed based on image recognition |
-
2006
- 2006-09-04 CN CNB2006100687438A patent/CN100485334C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 一种基于单片机的多位LED显示系统的设计. 夏立斌，谭青.电脑开发与应用，第18卷第7期. 2005 |
| 一种基于单片机的多位LED显示系统的设计. 夏立斌，谭青.电脑开发与应用，第18卷第7期. 2005 * |
| 钢索张力在线检测仪的基本原理. 黄文.工业计量，第3期. 1999 |
| 钢索张力在线检测仪的基本原理. 黄文.工业计量，第3期. 1999 * |
| 钢索张力智能检测仪的设计. 李鸣华，吕振洪，余水宝.仪器仪表学报增刊，第22卷第4期. 2001 |
| 钢索张力智能检测仪的设计. 李鸣华，吕振洪，余水宝.仪器仪表学报增刊，第22卷第4期. 2001 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1920506A (en) | 2007-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100485334C (en) | Tester for analyzing stress uniformity for elevator towing steel rope | |
| CN2795848Y (en) | Integrated pesticide residue detector for vegetable and fruit | |
| CN107797074A (en) | A kind of cell batteries internal resistance measurement circuit and measuring method | |
| CN203011836U (en) | Dissolved oxygen concentration detecting device | |
| CN104092251B (en) | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer | |
| CN207649856U (en) | A kind of fuel cell bipolar plate tightness detection device | |
| CN101556245B (en) | Chlorophyll measurement method based on RGB digital signal | |
| CN205860889U (en) | A kind of portable fuse photoelectric properties tester | |
| CN208969954U (en) | Volt-ampere of characteristic diode measures apparatus for demonstrating | |
| CN201261666Y (en) | Elevator efficiency detector | |
| CN201449284U (en) | High-precision solar bathroom scale | |
| CN207528887U (en) | A kind of cell batteries internal resistance measurement circuit | |
| CN106017238A (en) | Portable type fuze photoelectric property tester | |
| CN201091015Y (en) | Intelligent test step prompting instrument | |
| CN203310763U (en) | Rapid grading instrument for silkworm fresh cocoons | |
| CN208902267U (en) | A kind of identification of color and decision-making system | |
| CN106249122A (en) | Controllable injects high frequency light conductance life-span tester and the method for testing thereof of ratio | |
| CN212966502U (en) | Quantitative detection device for point-type smoke fire detector | |
| CN109061525A (en) | L ED driving power supply performance test system | |
| CN205478257U (en) | Pump efficiency, flow and lift detecting system | |
| CN221039230U (en) | Automatic power consumption testing device for glucometer | |
| CN201344967Y (en) | Test device of high-current micro switch used for lifting automobile glass | |
| CN209198583U (en) | A kind of insurance pipe detector circuit | |
| CN203642997U (en) | Ultrasonic liquid level measurement device for liquefied gas steel cylinder | |
| CN217332746U (en) | Two-in-one urine component detector and reagent strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20100904 |