CN109720966B - Elevator maintenance process - Google Patents
Elevator maintenance process Download PDFInfo
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- CN109720966B CN109720966B CN201910138761.6A CN201910138761A CN109720966B CN 109720966 B CN109720966 B CN 109720966B CN 201910138761 A CN201910138761 A CN 201910138761A CN 109720966 B CN109720966 B CN 109720966B
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Abstract
The invention discloses an elevator maintenance process, which belongs to the technical field of elevators, and comprises the steps of taking a wire breaking point as a center, respectively extending upwards for at least 1cm and extending downwards for at least 1cm to form a detection interval, winding at least one circle on the detection interval through a heat-shrinkable rubber sheet, fixing, then performing heat shrinkage, taking down, measuring the perimeter of the wire breaking point, performing rechecking cycle, measuring at least one circle on the detection interval through the heat-shrinkable rubber sheet, fixing, performing heat shrinkage again, measuring the perimeter of the wire breaking point, comparing, determining whether to replace according to the perimeter change condition, and accurately judging the condition of the wire breaking point of a hoisting rope during maintenance.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator overhauling process.
Background
The lifting elevator as a modern mechanical carrier has become one of the essential devices in daily life, and is widely applied to malls, high-rise office buildings and high-rise residential buildings. However, since the elevator as a vehicle travels between a high floor and the ground, it is dangerous to periodically perform maintenance, thereby ensuring the normal operation of the elevator and the safety of the passengers and the carried articles. The traction type elevator drives the lift car through the traction rope, the fixed pulley and the movable pulley. Generally, a plurality of hoisting ropes are in a group, the hoisting ropes can generate abrasion or broken wire after working for a period of time, and in order to ensure the running safety of the elevator, the elevator needs to be overhauled more frequently.
At present, after the broken wires are found in the process of maintenance, if the broken wire phenomenon is not serious, direct replacement cannot be carried out, the checking times are increased until replacement, and basically, people only check the broken wire number according to experience, and the elevator shaft is dark, so that the broken wire book cannot accurately run through, and after the broken wire phenomenon occurs, the broken wire phenomenon which is inconvenient to observe may exist inside the hoisting rope, so that the potential safety hazard exists in the hoisting rope.
Disclosure of Invention
The invention aims to provide an elevator maintenance process which has the advantage of accurately judging the condition of a broken wire point of a hoisting rope during maintenance.
The technical purpose of the invention is realized by the following technical scheme: an elevator maintenance process comprises the following steps:
the method comprises the following steps: detecting a broken wire breakpoint;
step two: primary treatment: running the hauling rope to enable the hauling rope at the position of the broken wire point to be in a vertical state, and cleaning sundries at the position of the broken wire point;
step three: first circumference determination:
step three, step one: and (3) interval determination: taking the broken filament point as a center, respectively extending upwards for at least 1cm and extending downwards for at least 1cm to form a detection interval;
step three, step two: first pressing and shaping: pressing the hoisting rope at the position of the detection section by using a pressing tool to ensure that the surface of the detection section is smooth;
step three, step three: first thermal shrinkage fixing: winding the heat-shrinkable rubber sheet on the detection interval for at least one circle, and fixing;
step three, step four: primary thermal shrinkage shaping: heating the heat-shrinkable rubber sheet by using a heat source to naturally shrink the heat-shrinkable rubber sheet and completely attach the heat-shrinkable rubber sheet to the surface of the detection interval;
step three, step five: first thermal shrinkage stripping: cutting off redundant heat-shrinkable rubber sheets, and only reserving the heat-shrinkable rubber sheets of which the innermost layers surround the surface of the detection area for one circle;
taking down the heat-shrinkable rubber sheet of which the complete innermost layer surrounds the surface of the detection area for a circle;
step three, step six: first thermal shrinkage measurement: spreading and spreading the heat-shrinkable rubber sheet, and measuring the length of the cut thread point corresponding to the position of the heat-shrinkable rubber sheet;
step four: and (4) rechecking: a rechecking period is carried out;
step four, step one: and (3) compacting and shaping again: pressing the hoisting rope at the position of the detection section by using a pressing tool to ensure that the surface of the detection section is smooth;
step four, step two: and (3) thermal shrinkage fixing again: winding the heat-shrinkable rubber sheet on the detection interval for at least one circle, and fixing;
step four, step three: and (3) performing thermal shrinkage setting again: heating the heat-shrinkable rubber sheet by using a heat source to naturally shrink the heat-shrinkable rubber sheet and completely attach the heat-shrinkable rubber sheet to the surface of the detection interval;
step four, step four: and (3) thermal shrinkage stripping again: cutting off redundant heat-shrinkable rubber sheets, and only reserving the heat-shrinkable rubber sheets of which the innermost layers surround the surface of the detection area for one circle;
taking down the heat-shrinkable rubber sheet of which the complete innermost layer surrounds the surface of the detection area for a circle;
step four, step five: measurement of thermal shrinkage again: spreading and spreading the heat-shrinkable rubber sheet, and measuring the length of the cut thread point corresponding to the position of the heat-shrinkable rubber sheet;
step five: maintenance and replacement: and (4) comparing the measured inner diameters according to the two times of thermal shrinkage to determine whether the hoisting rope is replaced, and if the replacement requirement is not met, repeating the fourth step until the hoisting rope is replaced.
By adopting the technical scheme, after the filament breaking point is found for the first time, carefully checking whether the filament breaking condition of the filament breaking point is suitable for continuous use, when the conventional judgment standard determines that the filament breaking number of the filament breaking point exceeds 2 percent of the total number of steel wires of the hauling rope, replacing the hauling rope in time, when the conventional judgment standard determines that the filament breaking number of the filament breaking point does not exceed 2 percent of the total number of the steel wires of the hauling rope, the thermal shrinkage function of the thermal shrinkage rubber sheet can be well attached to the hauling rope, so that the perimeter of the current hauling rope can be determined by measuring the express of the thermal shrinkage rubber sheet, after a rechecking period, the perimeter of the current thermal shrinkage hauling rope can be well attached to the hauling rope by measuring the thermal shrinkage function of the thermal shrinkage rubber sheet, the perimeter of the current thermal shrinkage rope can be determined by measuring the express of the thermal shrinkage rubber sheet, the change condition of the hauling rope can be known by comparing data twice, and whether the hauling rope is suitable for continuous work can be determined, if there is great potential safety hazard, should in time change, get rid of the potential safety hazard, obviously promote the detection accuracy to the towline, and also the maintainer of being convenient for carries out audio-visual observation towline's overall state, promotes the security that the elevator used.
Further, the third step: and (3) interval determination: the filament breaking point is taken as the center, and the filament breaking point extends upwards by 2cm and extends downwards by 2cm respectively.
Through adopting above-mentioned technical scheme, the tensile strength weakens relatively in the small range of disconnected silk point, promotes detection area, and effectual promotion detects the precision, reduces the potential safety hazard.
Further, step four: and (4) rechecking: one recheck period was 15 days.
By adopting the technical scheme, the safety of the elevator is effectively ensured in a frequent rechecking period.
Further, step three: first thermal shrinkage fixing: and winding the heat-shrinkable rubber sheet on the detection interval for three weeks, and fixing.
Through adopting above-mentioned technical scheme, promote the cladding effect to the towline through many circles of winding, promote the precision degree after the pyrocondensation to promote later stage measurement accuracy.
Further, step four, step two: and (3) thermal shrinkage fixing again: and winding the heat-shrinkable rubber sheet on the detection interval for three weeks, and fixing.
Through adopting above-mentioned technical scheme, promote the cladding effect to the towline through many circles of winding, promote the precision degree after the pyrocondensation to promote later stage measurement accuracy.
Further, the third step and the sixth step: first thermal shrinkage measurement: spreading and spreading the heat-shrinkable rubber sheet, and measuring the length of the cut thread point corresponding to the position of the heat-shrinkable rubber sheet; measuring the length of two heat-shrinkable rubber sheets 1cm away from the filament breaking point;
step four, step five: measurement of thermal shrinkage again: spreading and spreading the heat-shrinkable rubber sheet, and measuring the length of the cut thread point corresponding to the position of the heat-shrinkable rubber sheet; and measuring the length of the two positions of the heat-shrinkable rubber sheet which are 1cm away from the filament breaking point.
Through adopting above-mentioned technical scheme, the length of intercepting multistage position is compared, promotes the accuracy of contrast.
Further, the first step: and (3) detecting a broken wire breakpoint: the cotton yarn is fixed outside, the cotton yarn is wound on the dragging rope again, the elevator is operated, if part of the cotton yarn is hung on the dragging rope, the cotton yarn is taken down to observe whether a yarn breaking point exists or not.
Through adopting above-mentioned technical scheme, after the towline produced disconnected silk, partial steel wire head can effectually collude the cotton yarn to the quick emergence disconnected silk point of people of being convenient for promotes maintenance efficiency.
Further, the heat source is a hot air gun.
By adopting the technical scheme, the hot air gun is convenient for people to operate, the hot air is uniformly discharged, and the heat-shrinkable rubber sheet is convenient to shrink.
In conclusion, the invention has the following beneficial effects:
1. the circumference of the position of the broken thread point is accurately measured through the heat shrinkage effect of the heat-shrinkable rubber sheet, so that the judgment can be more accurate, and the potential safety hazard is reduced;
2. the pyrocondensation rubber piece can detect the condition that the broken filament point is close to the position simultaneously, promotes the accuracy that detects, reduces the potential safety hazard.
Drawings
FIG. 1 is a view showing a state where a heat-shrinkable rubber sheet of the present embodiment is fixed.
In the figure, 1, a hoist rope; 2. a heat-shrinkable rubber sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An elevator maintenance process comprises the following steps:
the method comprises the following steps: detecting a broken wire breakpoint; the hauling rope 1 is composed of a plurality of steel wires, the phenomenon of the broken wire of the hauling rope 1 is that partial steel wires are broken, the broken steel wires completely lose the tensile action at the broken wire point, after the steel wires are broken, the broken wire point forms two steel wire ends, because the whole length of the hauling rope 1 is long, when the broken wire point is detected, people use cotton yarn to form a ring shape and fix the ring-shaped cotton yarn outside the hauling rope 1, people can directly hold the ring-shaped cotton yarn and can also fix the ring-shaped cotton yarn through a fixing tool to operate the elevator, so that the hauling rope 1 and the ring-shaped cotton yarn carry out relative movement, in the movement process, when the cotton yarn meets the broken wire point of the hauling rope 1, the cotton yarn can be hooked by the steel wire ends, so that partial cotton yarn can be hung on the hauling rope 1, when the hauling rope 1 completely passes through the cotton yarn, people only need to observe that the cotton yarn is hung there, and then take off the cotton yarn to observe whether there is the broken wire point, thereby be convenient for people quick emergence disconnected silk point, promote maintenance efficiency.
And after the wire breaking point is found for the first time, carefully checking whether the wire breaking condition of the wire breaking point is suitable for continuous use, timely replacing the hauling rope 1 when the wire breaking number of the wire breaking point is determined to exceed 2% of the total number of the steel wires of the hauling rope 1 through a conventional judgment standard, and performing the second step when the wire breaking number of the wire breaking point is determined not to exceed 2% of the total number of the steel wires of the hauling rope 1 through the conventional judgment standard.
Step two: primary treatment: the dragging rope 1 is operated, so that the dragging rope 1 at the position of the broken wire point is in a vertical state, the situation that the observation is influenced due to the fact that the broken wire point is located in the dragging machine is avoided, the situation that the judgment is influenced due to the fact that the position of the broken wire point is arc-shaped is prevented, then solid sundries at the position of the broken wire point are cleaned through the hairbrush, lubricating oil at the position of the broken wire point is erased through the cleaning cloth, and the subsequent reinspection operation.
Step three: first circumference determination.
Step three, step one: and (3) interval determination: use disconnected silk point as the center, upwards extend 2cm respectively, downwardly extending 2cm forms the detection interval, suitably promotes measuring range, the multiple spot of being convenient for is surveyed, promotes and detects the precision, reduces the potential safety hazard, and disconnected silk point reduces gradually to the change of the position girth that both sides extended, consequently does not extend the sense of detection more than 3cm, when extending 2cm and can promoting the precision, has avoided the extension process and has promoted work load to people's work efficiency has been guaranteed.
Step three, step two: first pressing and shaping: the hoisting rope 1 at the position of the detection interval is compressed by using a compression tool, so that the surface of the detection interval is smooth, the shrinkage of the heat-shrinkable rubber sheet 2 is prevented from being influenced by the structures such as the protrusions caused by the broken wire of the hoisting rope 1, and the detection precision is prevented from being influenced by more gaps in the inner part.
Step three, step three: first thermal shrinkage fixing: winding pyrocondensation sheet rubber 2 three weeks on detecting the interval to fix, promote the cladding effect to towline 1 through winding many circles, avoid winding a week after, hookup location produces the fracture and influences the detection when the pyrocondensation, thereby promote the precision after the pyrocondensation, thereby promote later stage measurement accuracy.
Step three, step four: primary thermal shrinkage shaping: use hot-blast rifle heating pyrocondensation rubber sheet 2, the hot-blast rifle is convenient for people to operate, and goes out the hot-blast even, and the pyrocondensation rubber sheet 2 pyrocondensation of being convenient for makes pyrocondensation rubber sheet 2 shrink naturally and pastes and cover at detection interval surface completely.
Step three, step five: first thermal shrinkage stripping: unnecessary pyrocondensation sheet rubber 2 of excision only remains the inlayer and encircles the pyrocondensation sheet rubber 2 that detects interval surface a week, takes off complete inlayer again and encircles the pyrocondensation sheet rubber 2 that detects interval surface a week, ensures that pyrocondensation sheet rubber 2 only has the length of inlayer round, avoids the later stage to produce the measuring error, promotes the measuring degree of accuracy.
Step three, step six: first thermal shrinkage measurement: expand the tiling with pyrocondensation sheet rubber 2, measure the length that corresponds pyrocondensation sheet rubber 2 positions of disconnected silk point to and measure the length apart from two pyrocondensation sheet rubber 2 positions of disconnected silk point 1cm, the length of intercepting multistage position is contrasted, promotes the accuracy of contrast.
Step four: and (4) rechecking: the method is carried out after one rechecking period, wherein the rechecking period is 15 days, the frequent rechecking period effectively ensures the safety of the elevator, and the rechecking interval time is properly shortened along with the increase of the rechecking times, so that the safety is effectively improved.
Step four, step one: and (3) compacting and shaping again: the hoisting rope 1 at the position of the detection interval is compressed by using a compression tool, so that the surface of the detection interval is smooth, the phenomenon that the shrinkage of the heat-shrinkable rubber sheet 2 is influenced by the structures such as the bulge caused by the broken wire of the hoisting rope 1 is avoided, and the influence on the detection precision caused by more gaps in the inner part is avoided
Step four, step two: and (3) thermal shrinkage fixing again: winding pyrocondensation sheet rubber 2 three weeks on detecting the interval to fix, promote the cladding effect to towline 1 through winding many circles, avoid winding a week after, hookup location produces the fracture and influences the detection when the pyrocondensation, thereby promote the precision after the pyrocondensation, thereby promote later stage measurement accuracy.
Step four, step three: and (3) performing thermal shrinkage setting again: use hot-blast rifle heating pyrocondensation rubber sheet 2, the hot-blast rifle is convenient for people to operate, and goes out the hot-blast even, and the pyrocondensation rubber sheet 2 pyrocondensation of being convenient for makes pyrocondensation rubber sheet 2 shrink naturally and pastes and cover at detection interval surface completely.
Step four, step four: and (3) thermal shrinkage stripping again: unnecessary pyrocondensation sheet rubber 2 of excision only remains the inlayer and encircles the pyrocondensation sheet rubber 2 that detects interval surface a week, takes off complete inlayer again and encircles the pyrocondensation sheet rubber 2 that detects interval surface a week, ensures that pyrocondensation sheet rubber 2 only has the length of inlayer round, avoids the later stage to produce the measuring error, promotes the measuring degree of accuracy.
Step four, step five: measurement of thermal shrinkage again: expand the tiling with pyrocondensation sheet rubber 2, measure the length that corresponds pyrocondensation sheet rubber 2 positions of disconnected silk point to and measure the length apart from two pyrocondensation sheet rubber 2 positions of disconnected silk point 1cm, the length of intercepting multistage position is contrasted, promotes the accuracy of contrast.
Step five: maintenance and replacement: the internal diameter is measured according to twice pyrocondensation and is compared, it is big to reduce when the disconnected filament point position girth of volume, it increases seriously to show that the disconnected filament point of towline 1 is broken, if the external observation disconnected filament number is less, both inside disconnected filament number obviously increases, this towline 1 is unsuitable to continue work, there is great potential safety hazard, should in time change, get rid of the potential safety hazard, obviously promote the detection accuracy to towline 1, and also the maintainer of being convenient for carries out audio-visual observation towline 1's overall state, promote the security that the elevator used, if not reach the change demand, then repeat step four until towline 1 changes.
The better laminating of pyrocondensation effect through pyrocondensation rubber piece 2 can be on towline 1, thereby can confirm present towline 1's girth through the express delivery of getting pyrocondensation rubber piece 2, and after a reinspection cycle, the better laminating of pyrocondensation effect ability of rethread pyrocondensation rubber piece 2 is on towline 1, thereby can confirm present towline 1's girth through the express delivery of getting pyrocondensation rubber piece 2, can know the change condition of towline 1 through the contrast of twice data, thereby can confirm towline 1 and whether be fit for continuing to work, if there is great potential safety hazard, should change in time, get rid of the potential safety hazard, obviously promote the detection accuracy to towline 1, and also be convenient for maintainer to carry out audio-visual observation towline 1's overall state, promote the security that the elevator used.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. An elevator maintenance process is characterized in that: the method comprises the following steps:
the method comprises the following steps: detecting a broken wire breakpoint;
step two: primary treatment: running the hoisting rope (1) to enable the hoisting rope (1) at the position of the broken wire point to be in a vertical state, and cleaning sundries at the position of the broken wire point;
step three: first circumference determination:
step three (one): and (3) interval determination: taking the broken filament point as a center, respectively extending upwards for at least 1cm and extending downwards for at least 1cm to form a detection interval;
step three (two): first pressing and shaping: pressing the hoisting rope (1) at the position of the detection area by using a pressing tool to ensure that the surface of the detection area is smooth;
step three: first thermal shrinkage fixing: winding the heat-shrinkable rubber sheet (2) on the detection interval for three weeks, and fixing;
step three (four): primary thermal shrinkage shaping: heating the heat-shrinkable rubber sheet (2) by using a heat source to naturally shrink the heat-shrinkable rubber sheet (2) and completely attach the heat-shrinkable rubber sheet to the surface of the detection area;
step three (five): first thermal shrinkage stripping: cutting off redundant heat-shrinkable rubber sheets (2), and only reserving the heat-shrinkable rubber sheets (2) of which the innermost layer surrounds the surface of the detection area for a circle;
then taking down the heat-shrinkable rubber sheet (2) of which the complete innermost layer surrounds the surface of the detection area for a circle;
step three (six): first thermal shrinkage measurement: spreading the heat-shrinkable rubber sheet (2) flatly, and measuring the length of the broken thread point corresponding to the position of the heat-shrinkable rubber sheet (2);
step four: and (4) rechecking: a rechecking period is carried out;
step four (one): and (3) compacting and shaping again: pressing the hoisting rope (1) at the position of the detection area by using a pressing tool to ensure that the surface of the detection area is smooth;
step four (two): and (3) thermal shrinkage fixing again: winding the heat-shrinkable rubber sheet (2) on the detection interval for three weeks, and fixing;
step four (three): and (3) performing thermal shrinkage setting again: heating the heat-shrinkable rubber sheet (2) by using a heat source to naturally shrink the heat-shrinkable rubber sheet (2) and completely attach the heat-shrinkable rubber sheet to the surface of the detection area;
step four (four): and (3) thermal shrinkage stripping again: cutting off redundant heat-shrinkable rubber sheets (2), and only reserving the heat-shrinkable rubber sheets (2) of which the innermost layer surrounds the surface of the detection area for a circle;
then taking down the heat-shrinkable rubber sheet (2) of which the complete innermost layer surrounds the surface of the detection area for a circle;
step four (five): measurement of thermal shrinkage again: spreading the heat-shrinkable rubber sheet (2) flatly, and measuring the length of the broken thread point corresponding to the position of the heat-shrinkable rubber sheet (2);
step five: maintenance and replacement: and comparing the measured inner diameters according to the two times of thermal shrinkage to determine whether to replace, and if the replacement requirement is not met, repeating the fourth step until the hoisting rope (1) is replaced.
2. An elevator service process according to claim 1, wherein: step three (one): and (3) interval determination: the filament breaking point is taken as the center, and the filament breaking point extends upwards by 2cm and extends downwards by 2cm respectively.
3. An elevator service process according to claim 1, wherein: step four: and (4) rechecking: one recheck period was 15 days.
4. An elevator service process according to claim 2, wherein: step three (six): first thermal shrinkage measurement: spreading the heat-shrinkable rubber sheet (2) flatly, and measuring the length of the broken thread point corresponding to the position of the heat-shrinkable rubber sheet (2); measuring the length of two positions of the heat-shrinkable rubber sheet (2) which are 1cm away from the filament breaking point;
step four (five): measurement of thermal shrinkage again: spreading the heat-shrinkable rubber sheet (2) flatly, and measuring the length of the broken thread point corresponding to the position of the heat-shrinkable rubber sheet (2); and measuring the length of the two positions of the heat-shrinkable rubber sheet (2) which are 1cm away from the filament breaking point.
5. An elevator service process according to claim 1, wherein: the heat source is a hot air gun.
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| CN201910138761.6A CN109720966B (en) | 2019-02-25 | 2019-02-25 | Elevator maintenance process |
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| JPH03149713A (en) * | 1989-11-02 | 1991-06-26 | Hitachi Cable Ltd | Manufacture of insulated wire |
| JP2002333431A (en) * | 2001-05-10 | 2002-11-22 | Hitachi Building Systems Co Ltd | Wire rope diagnostic measuring device |
| CN102297805A (en) * | 2010-06-25 | 2011-12-28 | 上海宝钢工业检测公司 | Nondestructive test method of wire rope |
| DE112011105317B4 (en) * | 2011-06-07 | 2020-06-18 | Mitsubishi Electric Corporation | Wire rope defect detector |
| CN102494827B (en) * | 2011-11-24 | 2013-07-17 | 中国矿业大学 | Horizontal inductive tension detecting device for steel wire rope and horizontal inductive tension detecting method for same |
| CN103508285B (en) * | 2012-06-20 | 2017-06-06 | 昆山通祐电梯有限公司 | Elevator wire rope wire and strand breaking detection means |
| CN102788730B (en) * | 2012-07-23 | 2014-03-12 | 蒂森克虏伯电梯（上海）有限公司 | Device for testing bending fatigue of wire rope for elevator, and testing method thereof |
| KR20160048150A (en) * | 2013-08-29 | 2016-05-03 | 미쓰비시덴키 가부시키가이샤 | Elevator rope lifespan diagnostic device |
| CN104019782A (en) * | 2013-12-03 | 2014-09-03 | 中钢集团武汉安全环保研究院有限公司 | Crane steel wire rope diameter on-line measuring device and abnormal form forecasting method |
| CN104613884B (en) * | 2015-01-08 | 2017-06-13 | 济宁康华机电科技有限公司 | Laser high magnetic steel cord line flaw detection system and method |
| CN204538587U (en) * | 2015-04-29 | 2015-08-05 | 张学东 | Flexible cable fast-wiring head |
| CN105043236A (en) * | 2015-08-17 | 2015-11-11 | 莫嘉林 | Steel wire rope monitoring sensor |
| CN107764839B (en) * | 2017-10-12 | 2020-05-05 | 中南大学 | Machine vision-based steel wire rope surface defect online detection method and device |
| CN108657896A (en) * | 2018-06-12 | 2018-10-16 | 牛东阳 | The safety monitoring assembly of elevator rope |
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