CN102923544A - Device and method for detecting broken strands of hoisting steel wire rope - Google Patents
Device and method for detecting broken strands of hoisting steel wire rope Download PDFInfo
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- CN102923544A CN102923544A CN2012104621933A CN201210462193A CN102923544A CN 102923544 A CN102923544 A CN 102923544A CN 2012104621933 A CN2012104621933 A CN 2012104621933A CN 201210462193 A CN201210462193 A CN 201210462193A CN 102923544 A CN102923544 A CN 102923544A
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Abstract
The invention discloses a device for detecting broken strands of a hoisting steel wire rope. The detection device comprises a tension detection element and a control unit; the tension detection element is used for detecting the tension of the steel wire rope; the tension detection element feeds the detected steel wire rope tension signals back to the control unit for processing; and for the same steel wire rope, when the subtraction value of the tension detected in the first time and the tension detected in the second time is larger than or equal to 50%, the strands of the steel wire rope is judged to be broken. The invention further discloses a method for detecting the broken strands of the hoisting steel wire rope. The device and the method provided by the invention have the advantages that a conventional pressure sensor or a steel wire rope tension gauge and a lift control cabinet microcomputer circuit board are adopted, so that the manufacture process is mature and the cost is low; and a failure can be judged accurately, the reaction speed is high, and passenger safety can be better protected.
Description
[technical field]
The present invention relates to the elevator field, specifically can satisfy arbitrarily traction class elevator to the demand of broken strand of steel cable emergency operation, guarantee the disconnected strand detecting device of traction steel-cable and the method for safety.
[background technology]
If elevator continued operation after traction class elevator wire rope occured disconnected strand, might cause following consequence:
(1) this wire rope breaking;
(2) after disconnected thigh scatters and the knotting that is intertwined of adjacent wires rope, cause steel rope to skid at rope sheave, the non-flat bed of car stops terraced oppressive, and owing to wirerope-winding, can not rescue the people by jiggering;
(3) disconnected strand is continued the wearing and tearing that operation also can be accelerated grooving at rope sheave, makes rope sheave shortening in service life.
At present, as shown in Figure 3, there is a kind of optoelectronic induction instrument that uses to detect disconnected strand device, its principle is: at elevator traction machine 5 and 12 of track adjusting wheels optoelectronic induction instrument 13 is installed, is continued steel rope 10 emission infrared signals, and collect the infrared signal that reflects, output electrical signals feeds back to elevator control cabinet microcomputer circuit card 4, output control command after the abnormal electrical signal analysis is selected nearest floor leveling opening to towing machine 5, and stop the elevator operation; The abnormal electrical signal sets is that disconnected burst of rear surface state change (wire rope core partly exposes) occurs steel rope, produces with the reflection strength difference of original Steel Wire Surface to infrared signal.But; there are two open defects in said apparatus: 1) if a disconnected burst position does not occur between optoelectronic induction instrument detection zone; occuring disconnected strand can not shut down immediately; after occuring disconnected strand, traction steel-cable can continue operation; until a disconnected burst position enters between optoelectronic induction instrument detection zone, towing machine is just shut down behind the output abnormality electric signal.Occur disconnected strand to the process of shutting down steel rope moved LAP, after disconnected thigh scatters may with the knotting that is intertwined of adjacent wires rope, cause the non-flat bed of car to stop terraced oppressive; 2) if steel rope lubricating oil in operational process is separated out more serious; after adhering to the impurity such as dust of hoistway, machine room, the steel rope local surfaces can form overplate, creates a difference with the reflection strength of steel rope normal surface to infrared signal; the output abnormality electric signal causes wrong report to shut down.
Owing to not having a kind of actv. device, so most of traction class elevator is not all monitored broken strand of steel cable.
When elevator normally moves, the fluctuation of every steel wire rope tension general when static tension force ± 10%, and in long-time running between each steel rope Tension Distribution to change also be the process of a gradual change.And disconnected strand of traction steel-cable usually occurs in a flash, occur disconnected strand after because this steel rope is elongated lax, tension force can sharply diminish, more than 50% of moment before the amplitude that diminishes may reach disconnected strand, load diminished process less than 0.1 second.By the generation that the monitoring steel wire rope tension changes, can reach the purpose to disconnected burst of monitoring.
[summary of the invention]
The object of the invention is to the deficiency that exists for the above prior art, a kind of accuracy of judgement, speed of response is fast, cost the is low disconnected strand detecting device of traction steel-cable are provided.
Another object of the present invention provide disconnected strand of detecting device of a kind of above-mentioned traction steel-cable method of inspection.
To achieve these goals, the present invention is achieved in that the disconnected strand detecting device of traction steel-cable, comprise tension force detecting element and control unit, described tension force detecting element is for detection of steel wire rope tension, described tension force detecting element is processed the steel wire rope tension signal feedback that detects to control unit, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
Described steel rope is fixed on the fag end cover of wedge assembly, and described fag end cover of wedge assembly is connected with the fag end spring, and described fag end spring is fixed on the adapter plate.
Described tension force detecting element is pressure sensor, and described pressure sensor is arranged between fag end spring and the adapter plate, for detection of steel wire rope tension.
Described tension force detecting element is tension gauge, and described tension gauge is arranged on the steel rope, for detection of steel wire rope tension.
Described control unit is the microcomputer circuit card that tension data is carried out processing module that has that is installed in the elevator control cabinet.
Described microcomputer circuit card is connected with towing machine, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, when being judged as this steel rope for disconnected burst, microcomputer circuit card output control command is to towing machine, select nearest floor leveling opening, and stop the elevator operation.
The method of inspection of the disconnected strand detecting device of traction steel-cable, described tension force detecting element is processed the steel wire rope tension signal feedback that detects to control unit, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
Described microcomputer circuit card output control command is selected nearest floor leveling opening to towing machine, and stops the elevator operation.
Also comprise Tension Distribution homogeneity detecting step, in with each the root steel rope power value that once gathers, minimum value than maxim less than 50%, be judged as each root steel wire rope tension skewness, described microcomputer circuit card output abnormality signal reminds each root steel wire rope tension of repair and maintenance personnel adjustment to distribute to elevator control cabinet.
Wherein, the microcomputer circuit card is every the power value of 1 pressure sensor of collection in 1 second or tension gauge.
Compared with prior art, the present invention has the following advantages: the invention has the beneficial effects as follows, utilize existing pressure sensor or steel wire rope tension meter, elevator control cabinet microcomputer circuit card, its manufacture craft is ripe, and cost is low.And the present invention is fast to fault accuracy of judgement, speed of response, can better protect passenger safety.
[description of drawings]
Fig. 1 is the mounting structure schematic diagram of disconnected gang of detecting device embodiment 1 of traction steel-cable of the present invention;
Fig. 2 is the mounting structure schematic diagram of disconnected gang of detecting device embodiment 2 of traction steel-cable of the present invention;
Fig. 3 is the broken strand of steel cable detecting device scheme of installation of using the optoelectronic induction instrument in the prior art.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments the present invention is described in detail explanation.
Embodiment 1
As shown in Figure 1, disconnected strand of detecting device of traction steel-cable comprises the elevator control cabinet 3 that is fixed on machine room, is installed on elevator control cabinet 3 interior microcomputer circuit cards 4, is fixed on towing machine 5 on the frame machine beam, is fixed on fag end spring 6, pressure sensor 7, fag end cover of wedge assembly 9 on the adapter plate 8, is fixed on the steel rope 10 on the fag end cover of wedge assembly 9.Described pressure sensor 7 is arranged between fag end spring 6 and the adapter plate 8, for detection of steel wire rope tension, pressure sensor 7 is connected with described microcomputer circuit card 4 by control path 1, the steel wire rope tension signal feedback that detects is processed to microcomputer circuit card 4, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
Concrete operation is as follows: be fixed on the adapter plate 8 pressure sensor 7 by with the communication of microcomputer circuit card 4, continue the microcomputer circuit card 4 of the tension feedback of every steel rope 10 to elevator control cabinet 3, microcomputer circuit card 4 gathered the power value of 1 pressure sensor 7 every 1 second, then microcomputer circuit card 4 carries out computing.Operational formula: same steel rope 10 rear survey warp tension ratio before measurement tension force reduce numerical value greater than 50%, are judged as 10 disconnected strands of steel ropes, and output control command 2 is selected nearest floor leveling opening to towing machine 5, and stop the elevator operation.
As shown in Figure 2, disconnected strand of detecting device of traction steel-cable comprises the elevator control cabinet 3 that is fixed on machine room, is installed on elevator control cabinet 3 interior microcomputer circuit cards 4, is fixed on towing machine 5 on the frame machine beam, is fixed on fag end spring 6, tension gauge 11, fag end cover of wedge assembly 9 on the adapter plate 8, is fixed on the steel rope 10 on the fag end cover of wedge assembly 9.Described tension gauge 11 is fixed on the steel rope 10, for detection of steel wire rope tension.Described tension gauge 11 is connected with described microcomputer circuit card 4 by control path 1, the steel wire rope tension signal feedback that detects is processed to microcomputer circuit card 4, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
Concrete operation is as follows: be fixed on the steel rope 10 steel wire rope tension meter 11 by with the communication of microcomputer circuit card 4, continue the microcomputer circuit card 4 of the tension feedback of every steel rope 10 to elevator control cabinet 3, microcomputer circuit card 4 gathered the power value of 1 pressure sensor 7 every 1 second, then microcomputer circuit card 4 carries out computing.Operational formula: same steel rope 10 rear survey warp tension ratio before measurement tension force reduce more than 50%, are judged as 10 disconnected strands of steel ropes, and output control command 2 is selected nearest floor leveling opening to towing machine 5, and stop the elevator operation.
The method of inspection of the disconnected strand detecting device of traction steel-cable, described tension force detecting element is processed the steel wire rope tension signal feedback that detects to control unit, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand; Described microcomputer circuit card output control command is selected nearest floor leveling opening to towing machine, and stops the elevator operation.
The elevator operation need guarantee as far as possible that each root steel wire rope tension is evenly distributed.The traction steel-cable quantity of general elevator is the 5-7 root, and at first the Tension Distribution of each root steel rope can affect the comfort of elevator operation, and the tension force that next skewness causes too conference reduces rope service-life.Bb the present invention can comprise Tension Distribution homogeneity detecting step by the disconnected strand detecting device of traction steel-cable, in with each the root steel rope 10 power value that once gathers, minimum value than maxim less than 50%, be judged as each root steel rope 10 Tension Distribution inhomogeneous, described microcomputer circuit card output abnormality signal is reminded each root steel rope 10 Tension Distribution of repair and maintenance personnel adjustment to elevator control cabinet 3.
Wherein microcomputer circuit card 4 is every the power value of 1 pressure sensor 7 of collection in 1 second or tension gauge 11.
Although the present invention describes with reference to specific embodiment, this description and not meaning that is construed as limiting the present invention.With reference to description of the invention, other of the disclosed embodiments change, and all can expect for those skilled in the art, and this variation should belong in the affiliated claim limited range.
Claims (10)
1. disconnected strand of detecting device of traction steel-cable, it is characterized in that, comprise tension force detecting element and control unit, described tension force detecting element is for detection of steel wire rope tension, described tension force detecting element is processed the steel wire rope tension signal feedback that detects to control unit, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
2. according to the disconnected strand detecting device of traction steel-cable claimed in claim 1, it is characterized in that, described steel rope is fixed on the fag end cover of wedge assembly, and described fag end cover of wedge assembly is connected with the fag end spring, and described fag end spring is fixed on the adapter plate.
3. according to the disconnected strand detecting device of traction steel-cable claimed in claim 2, it is characterized in that, described tension force detecting element is pressure sensor, and described pressure sensor is arranged between fag end spring and the adapter plate, for detection of steel wire rope tension.
4. according to the disconnected strand detecting device of traction steel-cable claimed in claim 2, it is characterized in that, described tension force detecting element is tension gauge, and described tension gauge is arranged on the steel rope, for detection of steel wire rope tension.
5. according to the disconnected strand detecting device of traction steel-cable claimed in claim 2, it is characterized in that, described control unit is the microcomputer circuit card that is installed in the elevator control cabinet.
6. according to the disconnected strand detecting device of traction steel-cable claimed in claim 5, it is characterized in that, described microcomputer circuit card is connected with towing machine, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, when being judged as this steel rope for disconnected burst, microcomputer circuit card output control command is selected nearest floor leveling opening to towing machine, and stops the elevator operation.
7. according to the method for inspection of disconnected strand of detecting device of the arbitrary described traction steel-cable of claim 1-6, it is characterized in that, described tension force detecting element is processed the steel wire rope tension signal feedback that detects to control unit, behind same steel rope, survey the numerical value of warp tension ratio before measurement tension force minimizing more than or equal to 50%, be judged as this steel rope and be disconnected strand.
8. according to the method for inspection of the disconnected strand detecting device of traction steel-cable claimed in claim 7, it is characterized in that, described microcomputer circuit card output control command is selected nearest floor leveling opening to towing machine, and stops the elevator operation.
9. according to the method for inspection of disconnected strand of detecting device of traction steel-cable claimed in claim 7, it is characterized in that, also comprise Tension Distribution homogeneity detecting step: in each the root steel rope power value that once gathers, minimum value than maxim less than 50%, be judged as each root steel wire rope tension skewness, described microcomputer circuit card output abnormality signal reminds each root steel wire rope tension of repair and maintenance personnel adjustment to distribute to elevator control cabinet.
10. according to the method for inspection of the disconnected strand detecting device of traction steel-cable claimed in claim 9, it is characterized in that, the microcomputer circuit card is every the power value of 1 pressure sensor of collection in 1 second or tension gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210462193.3A CN102923544B (en) | 2012-11-15 | 2012-11-15 | Device and method for detecting broken strands of hoisting steel wire rope |
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| CN201210462193.3A CN102923544B (en) | 2012-11-15 | 2012-11-15 | Device and method for detecting broken strands of hoisting steel wire rope |
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| CN102923544A true CN102923544A (en) | 2013-02-13 |
| CN102923544B CN102923544B (en) | 2015-03-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879852A (en) * | 2013-06-27 | 2014-06-25 | 洛阳威尔若普检测技术有限公司 | Elevator wire rope breakage monitoring device based on deformation principle |
| CN104512779A (en) * | 2013-09-30 | 2015-04-15 | 上海三菱电梯有限公司 | Detecting device and method for suspension element of elevator |
| CN106256739A (en) * | 2016-08-30 | 2016-12-28 | 江苏兴华胶带股份有限公司 | A kind of knotting automatic stop arrangement of compensated chain automatic coiling equipment |
| CN106629330A (en) * | 2017-01-21 | 2017-05-10 | 上海峰景移动科技有限公司 | On-line detection system for tension of steel wire rope for elevator |
| CN108196473A (en) * | 2018-01-17 | 2018-06-22 | 宋彦震 | Automatic heating disconnects dog band and improves device and its control method |
| CN109406275A (en) * | 2018-11-04 | 2019-03-01 | 江苏兴达钢帘线股份有限公司 | The surface quality detection device and method of twisting steel wire |
| CN110482364A (en) * | 2019-08-29 | 2019-11-22 | 快意电梯股份有限公司 | Rope end is tensioned testing agency and safety protection apparatus for elevator |
| CN117105039A (en) * | 2023-10-23 | 2023-11-24 | 菱王电梯有限公司 | Method, system, elevator, equipment and medium for detecting elevator wire rope |
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| JPH10338434A (en) * | 1997-06-04 | 1998-12-22 | Hitachi Ltd | Hydraulic elevator |
| RU2142902C1 (en) * | 1994-05-06 | 1999-12-20 | Артур Ефимович Гольберт | Wire rope instrumental fault finding method |
| CN201268536Y (en) * | 2008-08-08 | 2009-07-08 | 宁波宏大电梯有限公司 | Belt type towline head combination |
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Patent Citations (5)
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| RU2142902C1 (en) * | 1994-05-06 | 1999-12-20 | Артур Ефимович Гольберт | Wire rope instrumental fault finding method |
| JPH09145504A (en) * | 1995-11-17 | 1997-06-06 | Mitsubishi Electric Corp | Rope tension measuring apparatus for elevator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879852A (en) * | 2013-06-27 | 2014-06-25 | 洛阳威尔若普检测技术有限公司 | Elevator wire rope breakage monitoring device based on deformation principle |
| CN104512779A (en) * | 2013-09-30 | 2015-04-15 | 上海三菱电梯有限公司 | Detecting device and method for suspension element of elevator |
| CN106256739A (en) * | 2016-08-30 | 2016-12-28 | 江苏兴华胶带股份有限公司 | A kind of knotting automatic stop arrangement of compensated chain automatic coiling equipment |
| CN106629330A (en) * | 2017-01-21 | 2017-05-10 | 上海峰景移动科技有限公司 | On-line detection system for tension of steel wire rope for elevator |
| CN108196473A (en) * | 2018-01-17 | 2018-06-22 | 宋彦震 | Automatic heating disconnects dog band and improves device and its control method |
| CN109406275A (en) * | 2018-11-04 | 2019-03-01 | 江苏兴达钢帘线股份有限公司 | The surface quality detection device and method of twisting steel wire |
| CN109406275B (en) * | 2018-11-04 | 2024-02-27 | 江苏兴达钢帘线股份有限公司 | Device and method for detecting surface quality of steel wire for twisting |
| CN110482364A (en) * | 2019-08-29 | 2019-11-22 | 快意电梯股份有限公司 | Rope end is tensioned testing agency and safety protection apparatus for elevator |
| CN117105039A (en) * | 2023-10-23 | 2023-11-24 | 菱王电梯有限公司 | Method, system, elevator, equipment and medium for detecting elevator wire rope |
| CN117105039B (en) * | 2023-10-23 | 2024-01-23 | 菱王电梯有限公司 | Method, system, elevator, equipment and medium for detecting elevator wire rope |
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