CN107271156B - Performance test method for ascending board for distribution line cement pole - Google Patents
Performance test method for ascending board for distribution line cement pole Download PDFInfo
- Publication number
- CN107271156B CN107271156B CN201710347336.9A CN201710347336A CN107271156B CN 107271156 B CN107271156 B CN 107271156B CN 201710347336 A CN201710347336 A CN 201710347336A CN 107271156 B CN107271156 B CN 107271156B
- Authority
- CN
- China
- Prior art keywords
- test
- pedal
- climbing
- rope
- mark
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000011056 performance test Methods 0.000 title claims abstract description 11
- 239000004568 cement Substances 0.000 title claims abstract description 10
- 238000009826 distribution Methods 0.000 title claims abstract description 10
- 230000001174 ascending effect Effects 0.000 title claims description 29
- 238000012360 testing method Methods 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 33
- 230000009194 climbing Effects 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 238000005336 cracking Methods 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 230000033001 locomotion Effects 0.000 claims 1
- 241001503987 Clematis vitalba Species 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000036319 strand breaking Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Environmental Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a performance test method of a climbing board for a distribution line cement pole, which comprises a pedal, a pole surrounding rope and a metal hook, wherein the pedal is provided with a mark, and the invention has the advantages that: through applying the load to the pedal at the speed of 95-105 mm/min to can be fast and effectively measure the slippage of climbing board through first mark and second mark, the measuring rate of accuracy is high, slippage is got conveniently, and need guarantee to climb the slippage of board and be not more than 150mm, when slippage is greater than 150mm, need return step one and carry out the secondary test, confirm climbing board's performance through the contrast of secondary detection, the rate of accuracy of test has been improved, and observe climbing board's change under the pressurization of load, whether the discovery is enclosed pole rope has broken strand and pedal has the fracture phenomenon, the potential safety hazard that the climbers probably exist can be fast timely.
Description
Technical Field
The invention relates to a performance test method of a climbing board for a distribution line cement pole.
Background
The climbing board is wound on the pole by enclosing pole rope, footboard and metal hook and constitutes, supplies the operator to engage in the specialized tool of pole climbing operation, in order to discover the hidden danger of climbing board in the use, the prevention accident takes place, current periodic test is carried out to the climbing board, current climbing board test all observes or carries out the self-checking through climbing pole operation through operating personnel naked eye, the detection effect is poor, can not timely discovery climbing board's hidden danger and inform operating personnel in advance, security performance when making the operation is low.
Disclosure of Invention
The invention aims to solve the technical problem that potential safety hazards cannot be found in time in the conventional ascending board test.
In order to solve the technical problems, the invention is realized by the following technical scheme: the method for testing the performance of the ascending board for the distribution line cement pole comprises a pedal, a surrounding rod rope and a metal hook, wherein a mark is arranged on the pedal, and the method sequentially comprises the following steps of:
step one: marking a measuring point A on a metal hook 1 And A 2 And measure A 1 And A 2 Distance a between them;
step two: the pedal is arranged on the test rod by the rod surrounding rope, and a first mark is marked between the rod surrounding rope and the test rod;
step three: applying a load to 3500N at a speed of 95-105 mm/min, maintaining for 5min, marking a second mark between the rod surrounding rope and the test rod before unloading, measuring the distance between the first mark and the second mark to obtain the maximum slippage of the ascending plate, entering a test in the fourth step when the maximum slippage is not more than 150mm, and returning to the first step when the maximum slippage is more than 150 mm;
step four: load is removed, the ascending plate is taken down, and A after test is measured 1 And A 2 Distance a between 1 And pass through a and a 1 To obtain the permanent deformation rate delta a of the metal hook, delta a = { (a-a) 1 ) (a) }. Times.100%, when the permanent deformation rate Deltaa of the metal hook is not more than 2%, entering a step five test, and when the permanent deformation rate Deltaa of the metal hook is more than 2%, returning to the step one;
step five: two testers weighing 60-75 kg respectively use the same pair of ascending boards to simulate rod ascending operation, the test distance is not less than 5m, the upper and lower circulation is carried out for 3 times, and the testers make upward and jumping actions in the rod ascending process.
Preferably, in the third step, a load is applied to the pedal through the pressing plate, the width of the pressing plate is 98-102 mm, the vertical axis of the pressing plate is coincident with the vertical axis of the pedal, the stability of the load applied to the pedal can be ensured, the stress uniformity of the pedal is ensured, and the accuracy of the test is improved.
Preferably, the pedal is provided with a rubber pad for preventing the pedal from being damaged when the pressing plate applies load, the thickness of the rubber pad is 3-5 mm, the load applied by the pressing plate can be uniformly distributed, and stress concentration is prevented, so that the damage of the pedal is reduced, the accuracy of testing is improved, when the thickness of the rubber pad is less than 3mm, the rubber pad is easy to damage, and when the thickness of the rubber pad is greater than 5mm, the stress of the pedal is uneven, and the stress effect of the pedal is easy to influence.
Preferably, the step one is preceded to the appearance inspection to the board of ascending a height to obtain the size of footboard, enclosing pole rope and metal hook, can inspect the whole outward appearance of board of ascending a height, guarantee the security performance of test, and guarantee footboard, enclosing pole rope and metal hook in safe size range.
Preferably, the mark durability test is carried out by wiping the mark for 1min respectively through the soaking cloth and the soaking absolute ethyl alcohol cloth before the first step, the mark after the test has no blurring or losing phenomenon, and the whole mark has clear, complete and firm effect.
In summary, the invention has the advantages that: 1. the method has the advantages that the load is applied to the pedal at the speed of 95-105 mm/min, the slippage of the climbing plate can be measured rapidly and effectively through the first mark and the second mark, the measurement accuracy is high, the slippage is convenient to measure, the slippage of the climbing plate is required to be ensured to be not more than 150mm, the first test is required to be carried out when the slippage is more than 150mm, the performance of the climbing plate is confirmed through the comparison of the second test, the test accuracy is improved, the change of the climbing plate is observed under the pressurization of the load, whether the surrounding rod rope has broken strands or not and whether the pedal has cracking or not can be rapidly found out in time, and potential safety hazards possibly existing in the climbers can be rapidly found;
2. through a and a 1 The permanent deformation rate delta a of the metal hook is obtained, the permanent deformation rate delta a of the metal hook is not more than 2%, when the permanent deformation rate delta a of the metal hook is more than 2%, the second test is carried out by returning to the first step, the performance of the ascending plate is confirmed through the comparison of the second test, and the accuracy of the test is further improved;
3. the two testers wear the same pair of climbing plates to simulate climbing operation, so that whether the climbing plates suddenly slide down or not during climbing can be rapidly checked, the metal hooks have no obvious visible deformation, whether the rope of the surrounding rod has broken strands or not and whether the pedal has cracking or not, and the accuracy of the test is improved.
Detailed Description
The method for testing the performance of the ascending board for the distribution line cement pole comprises a pedal, a surrounding rod rope and a metal hook, wherein a mark is arranged on the pedal, and the method sequentially comprises the following steps of:
step one: marking a measuring point A on a metal hook 1 And A 2 And measure A 1 And A 2 Distance a between them;
step two: the pedal is arranged on the test rod by the rod surrounding rope, and a first mark is marked between the rod surrounding rope and the test rod;
step three: applying a load to 3500N at a speed of 95-105 mm/min, maintaining for 5min, marking a second mark between the rod surrounding rope and the test rod before unloading, measuring the distance between the first mark and the second mark to obtain the maximum slippage of the ascending plate, entering a test in the fourth step when the maximum slippage is not more than 150mm, and returning to the first step when the maximum slippage is more than 150 mm;
step four: load is removed, the ascending plate is taken down, and A after test is measured 1 And A 2 Distance a between 1 And pass through a and a 1 To obtain the permanent deformation rate delta a of the metal hook, delta a = { (a-a) 1 ) (a) }. Times.100%, when the permanent deformation rate Deltaa of the metal hook is not more than 2%, entering a step five test, and when the permanent deformation rate Deltaa of the metal hook is more than 2%, returning to the step one;
step five: two testers weighing 60-75 kg respectively use the same pair of ascending boards to simulate rod ascending operation, the test distance is not less than 5m, the upper and lower circulation is carried out for 3 times, and the testers make upward and jumping actions in the rod ascending process.
In the third step, load is applied to the pedal through the pressing plate, the width of the pressing plate is 98-102 mm, the vertical axis of the pressing plate is coincident with the vertical axis of the pedal, stability of the load applied to the pedal can be guaranteed, the pedal is uniformly stressed, the accuracy of testing is improved, a rubber pad for preventing the pedal from being damaged when the pressing plate applies the load is arranged on the pedal, the thickness of the rubber pad is 3-5 mm, the load applied by the pressing plate is uniformly distributed, stress concentration is prevented, the damage of the pedal is reduced, the accuracy of testing is improved, when the thickness of the rubber pad is less than 3mm, the rubber pad is easy to damage, and when the thickness of the rubber pad is greater than 5mm, the stress of the pedal is uneven, and the stress effect of the pedal is easy to influence.
The step one is preceded to the board of ascending a height and carries out the visual inspection to obtain the footboard, enclose the size of pole rope and metal hook, can carry out the inspection to the whole outward appearance of board of ascending a height, guarantee the security performance of test, and guarantee footboard, enclose pole rope and metal hook in safe size range, the step one is preceded to clean the sign respectively 1min through soaking cloth and soaking absolute ethyl alcohol cloth and carries out the sign durability test, the sign after the test should not have fuzzy or lose the phenomenon, and whole sign should be clear, complete and firm effect.
The appearance inspection comprises the inspection of a metal hook, a surrounding rod rope and a pedal, wherein the metal hook is free from cracks, deformation, serious abrasion and corrosion, the ring eye support is intact, the surrounding rod rope is free from burning, strand breaking, strand scattering, mildew or serious abrasion, the crack length on the pedal is not more than 150mm, and the depth is not more than 10mm; the pedal is free from serious abrasion, has anti-skid patterns, the surrounding rod rope is tightly connected with the pedal, the metal hook is made of metal materials, and the surface layer is smooth, uniform and firm after being subjected to anti-corrosion treatment, so that the phenomena of skinning and falling off are avoided; the whole rope is required to be used, no joint is required, the length error of the rope is not more than 10mm, the length of the rope is not less than 640mm, the width of the rope is not less than 80mm, and the thickness of the rope is not less than 25mm.
According to practical application occasions, the metal hook can be subjected to corrosion resistance test, the metal hook is placed into a box body filled with NaCl solution, the temperature in the box body is 33-37 ℃, the concentration of the NaCl solution is 5%, the test period is 48 hours, and whether red rust or other obvious visible corrosion marks exist on the surface of the metal hook is observed.
The ascending plate can be subjected to a water immersion performance test or a high-temperature performance test or a low-temperature performance test before the first step, the ascending plate is immersed in water with the temperature of 10-30 ℃ for 2 hours, the test is completed within 90 seconds after the ascending plate is taken out, the high-temperature performance test is performed by placing the product in an environment with the temperature of 48-52 ℃ and the relative humidity of 80-90%, the test time is 2 hours, the test is completed within 90 seconds after the ascending plate is taken out, the low-temperature performance test is performed by placing the product in an environment with the temperature of-32 to-28 ℃, the test time is 2 hours, the test is completed within 90 seconds after the ascending plate is taken out, the test of the ascending plate under different use environments can be realized, and the safety performance is high.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.
Claims (4)
1. The utility model provides a distribution lines cement pole is with board performance test method that ascends a height, includes footboard, encloses pole rope and metal hook, is equipped with sign, its characterized in that on the footboard: the method sequentially comprises the following steps of:
step one: marking a measuring point A on a metal hook 1 And A 2 And measure A 1 And A 2 Distance a between them;
step two: the pedal is arranged on the test rod by the rod surrounding rope, and a first mark is marked between the rod surrounding rope and the test rod;
step three: applying a load to 3500N at a speed of 95-105 mm/min, maintaining for 5min, marking a second mark between the rod surrounding rope and the test rod before unloading, measuring the distance between the first mark and the second mark to obtain the maximum slippage of the ascending plate, entering a test in the fourth step when the maximum slippage is not more than 150mm, and returning to the first step when the maximum slippage is more than 150 mm;
step four: load is removed, the ascending plate is taken down, and A after test is measured 1 And A 2 Distance a between 1 And pass through a and a 1 To obtain the permanent deformation rate delta a of the metal hook, delta a = { (a-a) 1 ) (a) }. Times.100%, when the permanent deformation rate Deltaa of the metal hook is not more than 2%, entering a step five test, and when the permanent deformation rate Deltaa of the metal hook is more than 2%, returning to the step one;
step five: the method comprises the steps that two testers with the weight of 60-75 kg respectively use the same pair of climbing plates to perform simulation climbing operation, the test distance is not less than 5m, the testers circulate up and down for 3 times, the testers make upward and jumping motions in the climbing process, whether the climbing plates suddenly slide down or not is checked by simulation climbing operation, whether a metal hook has obvious visible deformation or not, whether a surrounding rod rope has broken strands or not and whether a pedal has cracking or not is checked by simulation climbing operation, and accordingly corresponding performance test results are obtained;
in the third step, a load is applied to the pedal through the pressing plate, the width of the pressing plate is 98-102 mm, and the vertical axis of the pressing plate is coincident with the vertical axis of the pedal.
2. The method for testing the performance of a climbing board for a power distribution line cement pole according to claim 1, wherein the method comprises the following steps: the pedal is provided with a rubber pad for preventing the pedal from being damaged when the pressing plate applies load, and the thickness of the rubber pad is 3-5 mm.
3. The method for testing the performance of a climbing board for a power distribution line cement pole according to claim 1, wherein the method comprises the following steps: and step one, performing appearance inspection on the ascending plate before the step one, and obtaining the sizes of the pedal, the surrounding rod rope and the metal hook.
4. A method for testing performance of a climbing board for a cement pole of a power distribution line according to claim 1 or 3, wherein: and step one, wiping the marks for 1min respectively by sequentially passing through a water-immersed cloth and an absolute ethyl alcohol-immersed cloth before performing a mark durability test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347336.9A CN107271156B (en) | 2017-05-17 | 2017-05-17 | Performance test method for ascending board for distribution line cement pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347336.9A CN107271156B (en) | 2017-05-17 | 2017-05-17 | Performance test method for ascending board for distribution line cement pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107271156A CN107271156A (en) | 2017-10-20 |
| CN107271156B true CN107271156B (en) | 2023-11-07 |
Family
ID=60064433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710347336.9A Active CN107271156B (en) | 2017-05-17 | 2017-05-17 | Performance test method for ascending board for distribution line cement pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107271156B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200987866Y (en) * | 2006-08-08 | 2007-12-12 | 安徽阜南县安盈电力工程有限公司 | Rope plate pole-climbing device |
| CN201204406Y (en) * | 2008-05-23 | 2009-03-04 | 应国珍 | Multilevel uphill board |
| CN201656343U (en) * | 2010-04-15 | 2010-11-24 | 内江电业局 | Climbing board with standby safety rope |
| CN201684364U (en) * | 2010-03-16 | 2010-12-29 | 四川省自贡市安全电器厂 | Anti-falling climbing plate |
| CN205246331U (en) * | 2015-12-09 | 2016-05-18 | 广东泓量检测技术有限公司 | Multi -functional multiplexer utensil check out test set |
| CN205826282U (en) * | 2016-06-23 | 2016-12-21 | 广州市恒力安全检测技术有限公司 | A kind of Portable safety Work tool static load test device |
| CN206152132U (en) * | 2016-11-08 | 2017-05-10 | 国网山东省电力公司龙口市供电公司 | Electric test ascends a height and uses anti -falling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040200666A1 (en) * | 2003-04-08 | 2004-10-14 | Diggle Frederick J. | Safety restraint apparatus and method |
| US6959784B2 (en) * | 2003-08-18 | 2005-11-01 | Bellsouth Intellect Pty Corp | Torso harness |
| US6981571B2 (en) * | 2003-08-30 | 2006-01-03 | Bellsouth Intellect Pty Corp | Climber catcher |
-
2017
- 2017-05-17 CN CN201710347336.9A patent/CN107271156B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200987866Y (en) * | 2006-08-08 | 2007-12-12 | 安徽阜南县安盈电力工程有限公司 | Rope plate pole-climbing device |
| CN201204406Y (en) * | 2008-05-23 | 2009-03-04 | 应国珍 | Multilevel uphill board |
| CN201684364U (en) * | 2010-03-16 | 2010-12-29 | 四川省自贡市安全电器厂 | Anti-falling climbing plate |
| CN201656343U (en) * | 2010-04-15 | 2010-11-24 | 内江电业局 | Climbing board with standby safety rope |
| CN205246331U (en) * | 2015-12-09 | 2016-05-18 | 广东泓量检测技术有限公司 | Multi -functional multiplexer utensil check out test set |
| CN205826282U (en) * | 2016-06-23 | 2016-12-21 | 广州市恒力安全检测技术有限公司 | A kind of Portable safety Work tool static load test device |
| CN206152132U (en) * | 2016-11-08 | 2017-05-10 | 国网山东省电力公司龙口市供电公司 | Electric test ascends a height and uses anti -falling device |
Non-Patent Citations (2)
| Title |
|---|
| 戴克铭 ; .电力安全工器具的预防性试验.电力安全技术.2009,(12),正文. * |
| 牛霞 ; .浅析安全登高用具的检测与使用.科技信息.2009,(27),正文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107271156A (en) | 2017-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Research on corrosion and fatigue performance of weathering steel and High-Performance steel for bridges | |
| CN103235243B (en) | Insulating tool testing stand | |
| CN107271156B (en) | Performance test method for ascending board for distribution line cement pole | |
| CN108398320A (en) | A kind of measurement method of wrought aluminium alloy tensile stress etching | |
| CN105090171A (en) | Cushion testing device of hydraulic cylinder and the testing method | |
| CN105716944A (en) | Device and method for bending crossbeam stress corrosion test | |
| CN202974416U (en) | Electronic balance etalon device of mass-method liquid flow standard apparatus | |
| CN101865788B (en) | Testing method for safe performance of power climbing rope | |
| CN203376218U (en) | Bending fatigue test device of steel wire rope | |
| CN107356474B (en) | Method for testing grappler performance of annular concrete pole | |
| CN106018092B (en) | A kind of blast furnace mud multi-functional pressure tester | |
| CN205940443U (en) | Cover to reinforcement thickness tester improves device | |
| CN210375975U (en) | Dumbbell pin factory strength test device | |
| CN106847055B (en) | Stress-strain test demonstration device for metal structure of hoisting machinery | |
| CN205382416U (en) | Transparent cable convenient to durability disease detection | |
| CN108398178A (en) | A kind of quick method of calibration of wide range running scale | |
| CN107576577A (en) | Safety belt test mechanism, testing machine | |
| Lassen et al. | Crack growth in high strength chain steel subjected to fatigue loading in a corrosive environment | |
| CN115901041A (en) | Method for measuring vertical residual stress at joint of head and waist of steel rail section | |
| CN207502312U (en) | Safety belt test mechanism, testing machine | |
| CN111926330A (en) | Corrosive agent and corrosion method suitable for CoCrMo high-temperature alloy of artificial joint | |
| CN206893187U (en) | A kind of lifting machinery metal structure stress-strain test apparatus for demonstrating | |
| Yu et al. | Comprehensive investigation and modeling of pitting corrosion effects on mechanical properties and fatigue performance of steel wires | |
| CN205910143U (en) | Glass insulator elasticity testing arrangement | |
| CN109490092A (en) | A kind of sxemiquantitative unconfined compressive strength tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 310015 Taizhou Road, Zhejiang, China, No. 217, No. Applicant after: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTE Co.,Ltd. Address before: 310015 Taizhou Road, Zhejiang, China, No. 217, No. Applicant before: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUE |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.217 Taizhou Road, gongchenqiao, Hangzhou, Zhejiang, 310015 Applicant after: Zhejiang Huadian Equipment Testing Research Institute Co.,Ltd. Address before: No.217 Taizhou Road, Hangzhou, Zhejiang, 310015 Applicant before: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTE Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |