CN101865788B - Testing method for safe performance of power climbing rope - Google Patents
Testing method for safe performance of power climbing rope Download PDFInfo
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- CN101865788B CN101865788B CN2010101880335A CN201010188033A CN101865788B CN 101865788 B CN101865788 B CN 101865788B CN 2010101880335 A CN2010101880335 A CN 2010101880335A CN 201010188033 A CN201010188033 A CN 201010188033A CN 101865788 B CN101865788 B CN 101865788B
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 230000009194 climbing Effects 0.000 title claims abstract description 19
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 238000011056 performance test Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000009954 braiding Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 238000007665 sagging Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000010985 leather Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 6
- 241001503987 Clematis vitalba Species 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005008 domestic process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000001073 sample cooling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention discloses a testing method for safe performance of a power climbing rope, comprising a structure and quality test, a rope leather sliding test, a static force elongation ratio test and a dynamic performance test. The dynamic performance test comprises power elongation ratio, first falling impact force and falling times. Because the testing method is standard and scientific, and the testing data are correct and reliable, the security and the reliability of the power climbing rope are improved.
Description
Technical field
The invention belongs to the netting technical field, especially relate to a kind of method of testing of safe performance of power climbing rope.
Background technology
Power climbing rope is one of ingredient of mountain-climbing safety equipment, is used for stoping the accidental falling of climber in mountain-climbing or climbing process.Dash in the project of weighing down possibility dynamic, must use dynamic ropes, like rock-climbing, mountain-climbing, decline, bungee jumping etc., this moment, the extension by rope absorbed energy.Power climbing rope comprises single rope, to rope and duplex type, single rope is meant a rope that can use separately in the mountain-climbing process, is used to prevent to fall; Rope is meant that the rope center section is fixed on eminence in the mountain-climbing process, and two climbers grip the rope two ends respectively and climb, and are used to prevent to fall; Duplex type is meant that the rope center section is fixed on eminence in the mountain-climbing process, and a climber grips the rope two ends simultaneously and climbs, and is used to prevent to fall.As everyone knows; UIAA authentication DYNAMIC dynamic ropes mainly contains two indexs; Impulsive force and UIAA whereabouts number of times first, but domestic method and the standard that does not have a kind of test safe performance of power climbing rope of standard at present make power climbing rope have very big potential safety hazard.
Summary of the invention
The objective of the invention is: the method for testing that standard, scientific and rational a kind of safe performance of power climbing rope are provided.
Technical scheme of the present invention is: a kind of method of testing of safe performance of power climbing rope; The braiding structure rope that power climbing rope is made up of rope skin and wire rope core; Security performance test comprises slides structure and quality test, rope skin test, static(al) extensibility is tested, dynamic performance testing, dynamic performance testing comprise the power extensibility, first shock of a fall power, number of times falls.
Structure and quality test are carried out according to the following steps: 1. sample one end is grasped, keep nature sagging, 2. load the counterweight of certain mass to sample; Counterweight is apart from gripping some 1200mm at least; 3. when the counterweight suspension time reaches 60 seconds, go out the section of 1000 ± 1mm in the rope marked, mark and grip a little or the distance of counterweight is not less than 50mm; 4. be no more than in time of 3 minutes then; Begin to measure diameter respectively from the rope two ends, every separated 100mm measures once, 5. the specimen marked region is sheared to get off to weigh.
Static(al) extensibility test is carried out according to the following steps: 1. clamped sample, and two length between gripping a little are 1500-1600mm, 2. use the 10-15 time of second; The counterweight that 80kg is heavy is loaded on the sample, keeps this load 3 ± 0.5min, 3. removes load; No-load keeps 100 ± 5min, 4. uses the 10-15 time of second, loads the heavy counterweight of 5kg; Keep this load 60 ± 5s, 5. mark the ran that length is 1000 ± 1mm, 6. use the 10-15 time of second; Continue to increase load to 80kg, keep this load 60 ± 5s, 7. measure the new length of mark ran.
Dynamic performance testing carries out according to the following steps: 1. use the 60-80 time of second, add loads to specimen, adjustment grips a position then; Making apart from the sample length in aperture is 2500 ± 10mm, 2. does a mark at rope by gripping a place, before 3. falling at every turn; Weight is elevated to the height of 2300 ± 5mm apart from the aperture, discharges weight then, 4. fall for the first time record maximum impact force and maximum elongation; 5. after falling, unload loads with 60 ± 5s time, the time interval of falling for twice in front and back is 5 ± 0.5min at every turn; 6. continue to test, up to the specimen fracture, the number of times that falls before the record fracture.
The rope skin slides to test on rope skin slip proving installation and carries out; Rope skin slip proving installation comprises removable plate and fixed head; 3 blocks of removable plates and 4 fixed heads are alternately; Rope is passed by the rope hole that is positioned on removable plate and the fixed head, exerts pressure to the radially different directions of 3 blocks of removable plates.Test according to the following steps: 1. the melted ends of rope is passed rope skin slip proving installation, expose 200 ± 10mm, 2. discharge removable plate; Apply the pressure of 50 ± 0.5N to specimen, 3. sample is pulled out with the speed of 0.5 ± 0.2m/s, pulling out length is 1930 ± 10mm; 4. remove the pressure of removable plate; Specimen is retracted initial position, 5. keep the pressure of removable plate, measuring ropes skin sliding length.
The invention has the beneficial effects as follows: accomplished structure and quality test, rope skin slide test, the test of static(al) extensibility and power extensibility, the dynamic performance testing of shock of a fall power and the number of times that falls first through rational testing procedure; Method of testing standard, science; Test data accurately, reliably; Improve the security and the reliability of power climbing rope, ensured climber's life security.
Description of drawings
Fig. 1 static(al) extensibility test of the present invention synoptic diagram;
Fig. 2 is a dynamic performance testing synoptic diagram of the present invention;
Fig. 3 is a rope skin slip test synoptic diagram of the present invention;
Fig. 4 is the left view of Fig. 2.
Embodiment
According to the method for application of power climbing rope can it be divided into single rope, to rope and duplex type.The braiding structure rope that power climbing rope is made up of rope skin 9 and wire rope core 8, security performance test comprise structure and quality test, restrict skin slip test, the test of static(al) extensibility, dynamic performance testing.
Before the test of specimen security performance, dry 24 hours at least, dry environment: 50 ± 5 ℃ of temperature, relative humidity 10%; Then, with sample cooling 2 hours, cooler environment: 20 ± 2 ℃ of temperature, relative humidity is no more than 65%; Then, preconditioning sample 72 hours, preset environment: 20 ± 2 ℃ of temperature, relative humidity 65%; At last, specimen, 23 ± 5 ℃ of probe temperatures.
Structure and quality test: single rope and be 40 meters to fathom test agent sample length, duplex type specimen sample length is 80 meters.Its step is following:
(1) at first, whether the checkout sample is braiding structure;
(2) then, sample one end is grasped, keep nature sagging;
(3) load counterweight to sample lentamente: single rope loads 10 ± 0.1kg, and rope is loaded 6 ± 0.1kg, and duplex type loads 5 ± 0.1kg, and counterweight is apart from gripping some 1200mm at least;
(4) when the counterweight suspension time reaches 60 seconds, go out the section of 1000 ± 1mm with the time that is no more than 10 seconds in the rope marked again, mark and grip a little or the distance of counterweight is not less than 50mm;
(5) then being no more than in time of 3 minutes, begin to measure diameter respectively from the rope two ends, whenever measure once at a distance from 100mm, measure altogether 6 times, in the test process, the rope xsect does not allow stressed or distortion;
(6) the specimen marked region is sheared to get off to weigh, be accurate to 0.1g.
Arithmetic mean with the diameter that records for 6 times is represented rope diameter, is accurate to 0.1mm, is the weight of unit representation rope unit length with g/m or ktex, is accurate to 1g.Rope performance such as diameter, intensity, label etc. when the rope length direction changes, and submitted test in the sampling of rope diverse location, and the detecting information that provides should comprise the weakest ran of all properties.
Can find out from the left view of rope skin slip test synoptic diagram of the present invention shown in Figure 3 and Fig. 4; The rope skin slides to test on rope skin slip proving installation and carries out; Rope skin slip proving installation comprises removable plate 6 and fixed head 7; Three blocks of removable plates 6 and four fixed heads 7 alternately, rope passes with the rope hole on the fixed head 7 from being positioned at removable plate 6, exerts pressure to the radially different directions of three blocks of removable plates.Before the rope skin slided test, at first the rope skin 9 with the rope head end was fused together with wire rope core 8, then; On clipped position, paste one section adhesive tape, tape width is not less than 12mm, and the stickup radian is θ; 150 °≤θ≤180 °; Next, axially cut perpendicular to rope with sharp blade, the cutting-out sample length is 2250 ± 10mm.
The step of rope skin slip test is following:
A, the melted ends of rope is passed proving installation, expose 200 ± 10mm;
B, discharge removable plate 6, apply the pressure of 50 ± 0.5N to specimen;
C, sample is pulled out with the speed of (0.5 ± 0.2) m/s, pulling out length is 1930 ± 10mm;
The pressure of d, the removable plate 6 of removal retracts initial position with specimen gently;
E, with c and the said operation repetition of d 3 times, and then press a, b, c, d and operate once;
The pressure of F, the removable plate 6 of maintenance, measuring ropes skin sliding length.
Fig. 1 static(al) extensibility test of the present invention synoptic diagram, static(al) extends test and carries out according to the following steps:
1. 1, two of clamped sample grips a little that the length between 2 is 1500-1600mm;
2. use the 10-15 time of second, the counterweight 3 that 80kg is heavy is loaded on the sample, keeps this load 3 ± 0.5min;
3. remove load, no-load keeps 100 ± 5min;
4. use the 10-15 time of second, load the heavy counterweight 3 of 5kg, keep this load 60s;
5. next used for 10 times in second, mark the ran that length is 1000 ± 1mm;
6. use the 10-15 time of second, continue to increase load, keep this load 60 ± 5s to 80kg;
7. measure the new length l of mark ran
1
Static(al) extensibility=(l
1-1000)/10 (% of unit), static(al) extensibility list rope is no more than 10%, and rope is no more than 12%; Duplex type is no more than 10%.
Fig. 2 is a dynamic performance testing synoptic diagram of the present invention, dynamic performance testing comprise the power extensibility, first shock of a fall power, number of times falls.Carry out according to the following steps:
1. 5 is the melted ends fixed position; With the 60-75 time of second, add loads for lightly specimen 1, add loads and be respectively: single rope (80 ± 0.1) kg, rope (55 ± 0.1) kg, duplex type (80 ± 0.1) kg; Adjustment grips a little 2 positions then; Up to 4 sample length is 2500 ± 10mm apart from the aperture, during the duplex type test, guarantee that two pulling force on the rope equate;
2. do a mark at rope by gripping a little 2 places, during the duplex type test, two ropes all will make marks;
3. before falling, it is the height of 2300 ± 5mm that weight is elevated to apart from the aperture 4, discharges weight then at every turn;
4. fall for the first time record maximum impact force and maximum elongation;
5. after falling, unload loads with the 60s time, the time interval of falling for twice in front and back is (5 ± 0.5) min at every turn;
6. continue to experimentize, up to specimen 1 fracture, the number of times that falls before the record fracture;
7. during specimen 1 fracture, sample for reference 1 whether to slide gripping a little 2 places, if sliding distance above 5mm, this test invalidation will adopt new sample, restarts to test.
For each effective specimen, write down the maximum impact force that falls first, be accurate to 0.1kN; Calculate dynamic length growth rate, be accurate to 1%; Write down the preceding number of times that falls of each effective breakage.Dynamic extensibility when each sample falls first can not surpass 40%; The maximum impact force that produces must not surpass falling for the first time: single rope---12kN, to rope---8kN, duplex type---12kN; Each rope sample can be born continuous 5 times at least and fall under the prerequisite that does not rupture, and duplex type can bear at least and falls continuously for 12 times.
Claims (2)
1. the method for testing of a safe performance of power climbing rope; The braiding structure rope that power climbing rope is made up of rope skin and wire rope core; The security performance test comprises that structure and quality test, rope skin slide and test, the static(al) extensibility is tested, dynamic performance testing; Dynamic performance testing comprises power extensibility, shock of a fall power, the number of times that falls first, it is characterized in that:
Said structure and quality test are carried out according to the following steps: 1. sample one end is grasped, keep nature sagging, 2. load the counterweight of certain mass to sample; Counterweight is apart from gripping some 1200mm at least; 3. when the counterweight suspension time reaches 60 seconds, go out the section of 1000 ± 1mm in the rope marked, mark and grip a little or the distance of counterweight is not less than 50mm; 4. be no more than in time of 3 minutes then; Begin to measure diameter respectively from the rope two ends, every separated 100mm measures once, 5. the specimen marked region is sheared to get off to weigh;
The test of said static(al) extensibility is carried out according to the following steps: 1. clamped sample (1), and two length that grip between the point (2) are 1500-1600mm, 2. use the 10-15 time of second; The counterweight (3) that 80kg is heavy is loaded on the sample (1), keeps this load 3 ± 0.5min, 3. removes load; No-load keeps 100 ± 5min, 4. uses the 10-15 time of second, loads the heavy counterweight (3) of 5kg; Keep this load 60 ± 5s, 5. mark the ran that length is 1000 ± 1mm, 6. use the 10-15 time of second; Continue to increase load to 80kg, keep this load 60 ± 5s, 7. measure the new length of mark ran;
Said dynamic performance testing carries out according to the following steps: 1. use the 60-80 time of second, add loads for specimen (1), adjustment grips a position then; The sample length that makes apart from the aperture (4) is 2500 ± 10mm, 2. locates to do a mark at rope by gripping point (2), before 3. falling at every turn; Weight is elevated to the height of (4) 2300 ± 5mm apart from the aperture, discharges weight then, 4. fall for the first time record maximum impact force and maximum elongation; 5. after falling, unload loads with 60 ± 5s time, the time interval of falling for twice in front and back is 5 ± 0.5min at every turn; 6. continue to test, up to the specimen fracture, the number of times that falls before the record fracture;
Said rope skin slides to test on rope skin slip proving installation and carries out, and rope skin slip proving installation comprises removable plate (6) and fixed head (7), and 3 blocks of removable plates (6) and 4 fixed heads (7) are alternately; Rope is passed by the rope hole that is positioned on removable plate (6) and the fixed head (7), exerts pressure the following steps test to the radially different directions of 3 blocks of removable plates (6): 1. the melted ends of rope is passed rope skin slip proving installation; Expose 200 ± 10mm, 2. discharge removable plate (6), apply the pressure of 50 ± 0.5N to specimen; 3. sample is pulled out with the speed of 0.5 ± 0.2m/s; Pulling out length is 1930 ± 10mm, 4. removes the pressure of removable plate (6), and specimen is retracted initial position; 5. the pressure that keeps removable plate (6), measuring ropes skin (9) sliding length.
2. the method for testing of safe performance of power climbing rope according to claim 1 is characterized in that: before the said security performance test, sample will carry out drying and cooling processing under certain temperature and humidity.
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| CN2010101880335A CN101865788B (en) | 2010-05-21 | 2010-05-21 | Testing method for safe performance of power climbing rope |
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| CN2010101880335A CN101865788B (en) | 2010-05-21 | 2010-05-21 | Testing method for safe performance of power climbing rope |
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| CN101865788B true CN101865788B (en) | 2012-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102706747B (en) * | 2012-05-25 | 2013-11-13 | 中国特种设备检测研究院 | Bungee elastic rope test apparatus |
| CN104215529A (en) * | 2013-05-30 | 2014-12-17 | 深圳市海洋王照明工程有限公司 | Electric torch lanyard strength detection method |
| CN106404541B (en) * | 2016-11-30 | 2023-09-22 | 中钢集团郑州金属制品研究院股份有限公司 | Device for measuring dynamic deflection performance of rope core of steel wire rope |
| CN109946034A (en) * | 2019-03-21 | 2019-06-28 | 鲁普耐特集团有限公司 | A kind of dynamic ropes impact resistance tester and its detection method |
| CN110487523A (en) * | 2019-07-31 | 2019-11-22 | 山东三同新材料股份有限公司 | A kind of test equipment that climbing is slipped with traction rope epitheca |
| CN111965025A (en) * | 2020-08-10 | 2020-11-20 | 泰安科鼎特工贸有限公司 | Method for testing safety performance of rope |
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| US4631955A (en) * | 1985-07-22 | 1986-12-30 | Fmc Corporation | Rope and sheave testing device and method |
| DD243916A1 (en) * | 1985-12-06 | 1987-03-18 | Autobahnbaukombinat Magdeburg | DEVICE FOR EXAMINING OBSERVENT DAMAGES AND IRREGULARITIES IN NON MOVABLE WIRE COMPONENTS |
| US5554807A (en) * | 1995-04-06 | 1996-09-10 | Tranquilla; Michael N. | Belt damping |
| DE202006001874U1 (en) * | 2006-02-03 | 2006-07-06 | Riedner, Wolfgang, Dipl.-Ing. | Warning system for preventing danger to person in hall e.g. sports hall, has rope/wire attached to hall roof base by roller and kept at constant tension and at constant height by load that is independent of temperature fluctuations |
| CN201352217Y (en) * | 2009-02-10 | 2009-11-25 | 贵州钢绳股份有限公司 | Distributed automatic detection device of mechanical property of steel wire and steel wire rope |
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