CN104359671B - Testing device for ball eye flexural vibration fatigue characteristic in power transmission line - Google Patents
Testing device for ball eye flexural vibration fatigue characteristic in power transmission line Download PDFInfo
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- CN104359671B CN104359671B CN201410757076.9A CN201410757076A CN104359671B CN 104359671 B CN104359671 B CN 104359671B CN 201410757076 A CN201410757076 A CN 201410757076A CN 104359671 B CN104359671 B CN 104359671B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 15
- 238000005452 bending Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000009661 fatigue test Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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Abstract
The invention relates to a testing device for a ball eye flexural vibration fatigue characteristic in a power transmission line, belonging to the technical field of detection of power transmission line hardware, wherein a motor output shaft is linked with a bearing, and an eccentric shaft top block is arranged at the end part of the bearing. An upper air cylinder and a lower air cylinder are fixed on a device bracket, an upper sliding block and a lower sliding block are arranged at end parts of a mandril of the upper air cylinder and a mandril of the lower air cylinder, test sample colliding blocks are fixedly arranged on end faces of the upper sliding block and the lower sliding block, and a to-be-tested ball eye is arranged between the two test sample colliding blocks. The eccentric shaft top block at the end part of the bearing is arranged at one side of a test sample chuck. An oil cylinder is arranged at the other side of the test sample chuck, a piston of the oil cylinder is connected with a to-be-tested ball, and the end part of the ball of the to-be-tested ball eye is embedded in a groove of the test sample chuck. The testing device can be used for applying an impaction force and a tensioning force to the ball eye, and simulating a use tension of an actual line and use states under various complicated use conditions; various testing data of service life and fatigue resistance of the ball eye can be theoretically obtained within the shortest time.
Description
Technical field
The present invention relates to a kind of test device of ball-eye bending vibration fatigue properties in transmission line of electricity, belong to power transmission line
Gold utensil detection technique field, road.
Background technology
Ball-eye is the crucial gold utensil in overhead transmission line in order to connecting insulator Yu shaft tower.It practice, wire is hanging
During can produce lasting vibration due to the reason such as wind speed, wind direction.Various mechanicals efforts meetings produced by conductor vibration
The ball-eye of connecting insulator and shaft tower is formed dynamic load.Ball-eye bears not advising of conductor vibration generation for a long time
Alternate load effect then, can cause gold utensil tired, serious in the case of can rupture.And ball-eye is positioned at insulator
With the connecting portion of shaft tower, it occurs fatigue damage more hidden, is difficult to find and eliminate during line inspection.Meanwhile,
Ball-eye once ruptures, and will result in wired earth fault for single insulator string, brings great to overhead transmission line safe operation
Threaten.Therefore ball-eye is curved vibration fatigue test is necessary.
At present in ball-eye fatigue test, conventional assay device is off wheel drive assay device.Its method and principle
Being to be fixedly mounted on specimen mounting sample one end, the other end of sample coordinates with eccentric, drives main shaft by driving means
Rotating, the eccentric that main shaft is installed is also with main axis, and eccentric coordinates with sample so that sample is at the work of alternate stress
Use lower alternating bending, sample is curved fatigue test.
The shortcoming of the method is:
(1) this device is not directed to ball-eye design, is only capable of detecting the performance of material itself, it is impossible to execute sample simultaneously
Adding tightening force, thus can not well simulate ball-eye actual motion condition, the experimental data obtained is inaccurate.
(2) this device is directly contributed the applying of flexural fatigue active force by eccentric and main axis, not through excess pressure control
System processed, it is impossible to quantitatively setting the active force being applied on sample, measurement data is inaccurate.
Summary of the invention
The purpose of the present invention is to propose to a kind of test device of ball-eye bending vibration fatigue properties, mould in transmission line of electricity
Intend the service condition of ball-eye, by certain strength and frequency, ball-eye carried out impact test, thus show that bulb is hung
Ring life-span and the science data of resisting fatigue.
The test device of ball-eye bending vibration fatigue properties in transmission line of electricity that the present invention proposes, including motor, axle
Hold, eccentric shaft jacking block, upper eccentric collision block, lower eccentric collision block, guide rail, upper cylinder, lower cylinder, upper cylinder push rod, lower vapour
Cylinder push rod, top shoe, sliding block, upper sample collision block, lower sample collision block, sample chuck, control dish, steel wire, steel wire are even
Plate and oil cylinder；Described control dish is connected with the power shaft of motor, and the output shaft of motor is connected with bearing by V-belt,
Bearing is placed in bearing block, and bearing block is placed on bearing bracket, and bearing end is provided with eccentric shaft jacking block；Described upper cylinder
Being fixed on appliance stand with described lower cylinder, the casing top half push rod of casing top half and the lower cylinder rams end of lower cylinder are respectively
Being provided with top shoe and sliding block, described guide rail is respectively placed between top shoe, sliding block and support；The lower surface of top shoe
Be respectively fixed with upper sample collision block and lower sample collision block on the upper surface of sliding block, described ball-eye to be measured is placed in examination
Between sample collision block and lower sample collision block；The eccentric shaft jacking block of described bearing end is positioned at the side of sample chuck, and described is upper
Eccentric collision block and lower eccentric collision block are separately fixed on top shoe lower surface and sliding block upper surface, and are positioned at eccentric shaft jacking block
Upper and lower；Described oil cylinder is placed in the opposite side of sample chuck, and oil cylinder piston is by steel wire yoke plate and steel wire and ball to be measured
The end of bulb hanging ring is connected by pin, and the bulb end of ball-eye to be measured embeds in the groove of sample chuck.
The test device of ball-eye bending vibration fatigue properties in transmission line of electricity that the present invention proposes, its advantage is:
(1) the test device of the bending vibration fatigue properties of the present invention, can apply impulsive force, tension to ball-eye simultaneously
Power, the use state under the use tension force of simulation actual track and various complicated service condition, from point of theory in the shortest time
In can obtain the life-span of ball-eye and the various test datas of resisting fatigue.
(2) the test device of the present invention, during test, the impulsive force of output is changed by air pressure, can quantitatively set, therefore
The bending vibration fatigue properties of the ball-eye that test obtains accurately and are stablized.
(3) the test device of the present invention, can by PLD control system, in conjunction with hydraulic pressure, pneumatic, mechanical,
The full Based Intelligent Control of electrical equipment, data setting simplifies, and frequency, impulsive force, tightening force arbitrarily set, test parameters variation,
Make measurement result more accurately and reliably, and work efficiency is high.
Accompanying drawing explanation
Fig. 1 is that the structure of the test device of ball-eye bending vibration fatigue properties in transmission line of electricity that the present invention proposes is shown
It is intended to.
Fig. 2 is the A direction view of Fig. 1.
In Fig. 1 and Fig. 2,1 be motor, 2 be V-belt, 3 be bearing, 4 be appliance stand, 5 be bearing bracket, 6
It is bearing block, 7 is off axle jacking block, 8 be upper eccentric collision block, 9 be lower eccentric collision block, 10 be upper cylinder, 11 be the therapeutic method to keep the adverse QI flowing downwards
Cylinder, 12 be upper cylinder push rod, 13 be lower cylinder rams, 14 be sliding block, 15 be top shoe, 16 be lower sample collision block,
17 it is upper sample collision block, 18 is sample chuck, 19 is ball-eye to be measured, 20 is control dish, 21 is guide rail, 22 is
Pin, 23 be steel wire, 24 be steel wire connecting plate, 25 be oil cylinder piston, 26 be oil cylinder.
Detailed description of the invention
The test device of ball-eye bending vibration fatigue properties in transmission line of electricity that the present invention proposes, its structure such as Fig. 1
Shown in, including: motor 1, bearing 3, eccentric shaft jacking block 7, upper eccentric collision block 8, lower eccentric collision block 9, guide rail 21, on
Cylinder 10, lower cylinder 11, upper cylinder push rod 12, lower cylinder rams 13, top shoe 15, sliding block 14, upper sample collision block
17, lower sample collision block 16, sample chuck 18, control dish 20, steel wire 23, steel wire connecting plate 24 and oil cylinder 26；Described
Control dish 20 is connected with the power shaft of motor 1, and the output shaft of motor is connected with bearing 3 by V-belt 2, bearing 3
Being placed in bearing block 6, bearing block 6 is placed on bearing bracket 5, and bearing end is provided with eccentric shaft jacking block 7.Upper cylinder 10
It is fixed on appliance stand 4 with lower cylinder 11, the casing top half push rod 12 of casing top half 10 and the lower cylinder rams of lower cylinder 11
13 ends are respectively equipped with top shoe 15 and sliding block 14, described guide rail 21 be respectively placed in top shoe 15, sliding block 14 with
Between appliance stand 4；It is respectively fixed with sample collision block 17 on the lower surface of top shoe 15 and the upper surface of sliding block 14
With lower sample collision block 16, described ball-eye to be measured 19 is placed between sample collision block 17 and lower sample collision block 16.Axle
The eccentric shaft jacking block 7 holding 3 ends is positioned at the side of sample chuck 18, described upper eccentric collision block 17 and lower eccentric collision block 16
It is separately fixed on top shoe 15 lower surface and sliding block 14 upper surface, and is positioned at the upper and lower of eccentric shaft jacking block 7.
Oil cylinder 26 is placed in the opposite side of sample chuck 18, and oil cylinder piston 25 is by steel wire yoke plate 24 and steel wire 23 and bulb to be measured
The end of link 19 is connected by pin 22, and the bulb end of ball-eye 19 to be measured embeds in the groove of sample chuck 18.
The work process of this test device be discussed in detail below in conjunction with accompanying drawing:
The test device of ball-eye bending vibration fatigue properties in transmission line of electricity that the present invention proposes, during use, first
The bulb end of ball-eye 19 to be measured is embedded in the groove of sample chuck 18, the link end of ball-eye 19 to be measured
Being connected with steel wire 23 by pin 22, steel wire 23 is connected with the piston 25 of oil cylinder 26 by steel wire yoke plate 24, treats
Surveying ball-eye 19 and apply certain pulling force, the size of pulling force is set by control dish 20, and control dish 20 is by adjusting
The pressure of fuel-economizing cylinder 26 controls to be applied to the size of the pulling force on ball-eye 19 to be measured.Set by control dish 20 and execute
Being added in the bending vibration power on ball-eye 19 to be measured, control dish 20 is by regulation upper cylinder 10 and the pressure of lower cylinder 11
Control to be applied to the size of the bending vibration power on ball-eye 19 to be measured.Set by control dish 20 and be applied to ball to be measured
The frequency of the bending vibration power on bulb hanging ring 19, control dish 20 controls to be applied to treat by the output speed of regulation motor 1
The frequency of the bending vibration power on survey ball-eye 19.Appliance stand 4, bearing bracket 5, bearing block 6 jointly play and prop up
Support, stablize the effect of apparatus of the present invention.
On-test, the enabling signal that motor 1 is sent by control dish 20, the output shaft of motor 1 passes through V-belt 2 and axle
Holding 3 to be connected, band dynamic bearing 3 rotates.The end eccentric shaft jacking block 7 of bearing 3 rotates with bearing 3, stirs partially
Heart collision block 8 and lower eccentric collision block 9, upper eccentric collision block 8 and lower eccentric collision block 9 be separately fixed at top shoe 15 lower surface and under
On slide block 14 upper surface.When eccentric shaft jacking block 7 stirs upper eccentric collision block 8, top shoe 15 moves upward along guide rail 21,
Eccentric shaft jacking block 7 continues to rotate with bearing 3, loses and upper eccentric collision block 8 is stirred power, at the work of upper cylinder 10 pressure
Promoting top shoe 15 to move downward along guide rail 21 with lower casing top half push rod 12, the upper sample collision block 17 on top shoe 15 hits
Hit ball-eye 19 to be measured and apply downward bending vibration power.When eccentric shaft jacking block 7 stirs lower eccentric collision block 9, upper cunning
Block 14 moves downward along guide rail 21, and eccentric shaft jacking block 7 continues to rotate with bearing 3, loses stirring lower eccentric collision block 9
Power, under the effect of lower cylinder 11 pressure, lower cylinder rams 13 promotes sliding block 14 to move upward along guide rail 21, sliding block
Lower sample collision block 16 on 14 clashes into ball-eye 19 to be measured and applies bending vibration power upwards.Move in circles, to ball to be measured
Bulb hanging ring 19 carries out under certain bending vibration impulsive force, certain pulling force effect, the bending vibration fatigue test of certain frequency.
Claims (1)
1. the test device of ball-eye bending vibration fatigue properties in transmission line of electricity, it is characterised in that this test
Device include motor, bearing, eccentric shaft jacking block, upper eccentric collision block, lower eccentric collision block, guide rail, upper cylinder, lower cylinder,
Upper cylinder push rod, lower cylinder rams, top shoe, sliding block, upper sample collision block, lower sample collision block, sample chuck, control
Dish, steel wire, steel wire connecting plate and oil cylinder；Described control dish is connected with the power shaft of motor, and the output shaft of motor passes through triangle
Band is connected with bearing, and bearing is placed in bearing block, and bearing block is placed on bearing bracket, and bearing end is provided with eccentric shaft top
Block；Described upper cylinder and described lower cylinder are fixed on appliance stand, under the casing top half push rod of casing top half and lower cylinder
Cylinder rams end is respectively equipped with top shoe and sliding block, and described guide rail is respectively placed between top shoe, sliding block and support；
Sample collision block and lower sample collision block, ball-eye to be measured it is respectively fixed with on the lower surface of top shoe and the upper surface of sliding block
It is placed between sample collision block and lower sample collision block；The eccentric shaft jacking block of described bearing end is positioned at the side of sample chuck,
Described upper eccentric collision block and lower eccentric collision block are separately fixed on top shoe lower surface and sliding block upper surface, and are positioned at bias
The upper and lower of axle jacking block；Described oil cylinder is placed in the opposite side of sample chuck, and oil cylinder piston passes through steel wire yoke plate and steel wire
Being connected by pin with the end of ball-eye to be measured, the bulb end of ball-eye to be measured embeds in the groove of sample chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757076.9A CN104359671B (en) | 2014-12-10 | 2014-12-10 | Testing device for ball eye flexural vibration fatigue characteristic in power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757076.9A CN104359671B (en) | 2014-12-10 | 2014-12-10 | Testing device for ball eye flexural vibration fatigue characteristic in power transmission line |
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| Publication Number | Publication Date |
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| CN104359671A CN104359671A (en) | 2015-02-18 |
| CN104359671B true CN104359671B (en) | 2017-01-11 |
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| CN201410757076.9A Expired - Fee Related CN104359671B (en) | 2014-12-10 | 2014-12-10 | Testing device for ball eye flexural vibration fatigue characteristic in power transmission line |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105527180B (en) * | 2015-11-30 | 2019-03-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of metal material bending fatigue testing method |
| CN106501075B (en) * | 2016-10-20 | 2018-11-20 | 云南电网有限责任公司电力科学研究院 | A kind of electric armour clamp wear test fixture and electric armour clamp abrasion tester |
| CN108760204A (en) * | 2018-06-13 | 2018-11-06 | 国网新疆电力有限公司电力科学研究院 | For conducting wire and its wind-induced fatigue experimental rig of connection gold utensil |
| CN109374249B (en) * | 2018-11-08 | 2023-12-26 | 国网浙江省电力有限公司电力科学研究院 | Wire clamp test platform for simulating random curve swing of wire under wind excitation |
| CN109406083B (en) * | 2018-11-08 | 2023-12-05 | 国网新疆电力有限公司电力科学研究院 | Suspension string hardware wind excitation vibration abrasion simulation test platform |
| CN113758664B (en) * | 2021-08-10 | 2023-10-31 | 广州大学 | Rope-tied type manual excitation control system and control method thereof |
| CN113565833B (en) * | 2021-09-27 | 2022-01-04 | 莱州兴达液压机械科技有限公司 | Oil cylinder fatigue test machine |
| CN114166667B (en) * | 2021-11-19 | 2023-09-29 | 广东石油化工学院 | Multidirectional physical impact test equipment for testing fatigue degree of metal material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005300524A (en) * | 2004-03-17 | 2005-10-27 | Toyota Motor Corp | Vibration transmission property analyzer for engine block and vibration transmission property analysis method using above analyzer |
| CN201716227U (en) * | 2010-06-24 | 2011-01-19 | 无锡威孚精密机械制造有限责任公司 | Spring fatigue testing machine |
| CN201749018U (en) * | 2010-11-05 | 2011-02-16 | 重庆康明斯发动机有限公司 | Vibration measurement test bed of vibration absorber |
| CN202362199U (en) * | 2011-12-13 | 2012-08-01 | 河海大学 | Component fatigue strength testing device |
| CN104020038B (en) * | 2014-06-17 | 2016-05-25 | 山东大学 | A kind of vibration mechine combined test annex and static fatigue test method |
| CN204389149U (en) * | 2014-12-10 | 2015-06-10 | 国家电网公司 | For the proving installation of ball-eye flexural vibrations fatigue properties in transmission line of electricity |
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Granted publication date: 20170111 Termination date: 20171210 |