CN109406298A - A kind of composite material electric pole mechanical test method and its experimental rig - Google Patents
A kind of composite material electric pole mechanical test method and its experimental rig Download PDFInfo
- Publication number
- CN109406298A CN109406298A CN201711348847.9A CN201711348847A CN109406298A CN 109406298 A CN109406298 A CN 109406298A CN 201711348847 A CN201711348847 A CN 201711348847A CN 109406298 A CN109406298 A CN 109406298A
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- Prior art keywords
- electric pole
- movable pulley
- load
- rope
- top end
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- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 230000036316 preload Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0264—Beam
Abstract
The present invention relates to experimental techniques used when a kind of composite material electric pole mechanical property test, especially a kind of composite material electric pole mechanical test method and its experimental rig, it is characterized by, it further include having two-way movable pulley, turning to fixed rope and two places anchored site, two-way movable pulley includes track movable pulley and load movable pulley, two movable pulleys are fixed by the bracket connection, two places anchored site is separately mounted to outer space and the lower section of electric pole top end, the both ends for turning to fixed rope are separately connected two places anchored site, and centre string is around track movable pulley；One end of load rope connects hoist engine, and other end string connects sensor after load movable pulley, and is finally fixedly connected with electric pole top end.It when operation, is first preloaded, the position of two movable pulleys is adjusted, it is ensured that sliding is smoothly tested again.The invention has the advantages that: load rope direction change can be reduced, Load Simulation accuracy is improved, load rope is avoided to fall off.
Description
Technical field
The present invention relates to experimental technique used when a kind of composite material electric pole mechanical property test, especially a kind of composite woods
Expect electric pole mechanical test method and its experimental rig.
Background technique
It in recent years, is the safety for improving power network line, the composite material high using high tenacity and specific strength in engineering
Electric pole.Composite material electric pole can reduce collapsing for line pole, can also improve the corrosion resistance of electric pole, can substantially reduce and apply
Work difficulty improves construction efficiency, so be widely used.
When carrying out Mechanics Performance Testing to composite material electric pole in the prior art, using the mechanical property of current concurrent
Can test method, referring to attached drawing 1, device specifically include hoist engine 1, load rope 2, sensor 5, positioning device 3 and with positioning
Device connection fixed pulley 4, in use, load rope 2 one end connect hoist engine 1, the other end around fixed pulley 4 via with sensing
Device 5 connects, and finally connect with the top end of composite material electric pole.With the test data of 15 meters of concurrents and composite material electric pole
Comparison, the amount of deflection at corresponding tip diameter end respectively may be about 1250mm and 4000mm when failing load acts on, it is seen that composite material electric pole
Electric pole bending is obvious under peak load effect.But since the fixed pulley position for turning to load rope is positioned and fixed, with
Further drawing of the hoist engine to load rope, electric pole be bent to fixed pulley direction, the top end of electric pole is gradually inclined in bending process
From the bit line 6 where former top end, therefore loads rope and also changed correspondingly in the direction of top end side, the bit line where electric pole original top end
The 6 angle a(load rope angle changings restricted with load) it changes greatly, so that Load Simulation is inaccurate.In addition top end lanyard point with
Electric pole is bent after curve movement, and load rope becomes larger with shaft angle, and as electric pole bending is increasing, load is restricted easily from top end
Lanyard point is fallen off.
Summary of the invention
One kind is provided it is an object of the invention to shortcoming according to prior art can reduce the direction change of load rope
Change, improve Load Simulation accuracy, the composite material electric pole mechanical test method for avoiding load rope from falling off and its test dress
It sets.
Composite material electric pole mechanical property test device of the present invention is realized by following approach:
A kind of composite material electric pole mechanical property test device includes that hoist engine, load rope and sensor, structural feature exist
In, further include having two-way movable pulley, turning to fixed rope and two places anchored site, two-way movable pulley include track movable pulley and plus
Carry movable pulley, two movable pulleys are fixed by the bracket connection, two places anchored site be separately mounted to the outer space of electric pole top end with
Lower section, the both ends for turning to fixed rope are separately connected two places anchored site, and centre string is around track movable pulley；One end connection of load rope
Hoist engine, other end string connects sensor after load movable pulley, and is finally fixedly connected with electric pole top end.
The test method of above-mentioned experimental rig, is characterized by, and includes the following steps:
1) a kind of experimental rig as described above is provided, electric pole is fixed using fixture, is fixed on testing bed, testing stand, in the middle part of electric pole
Pad coaster；Hoist engine is arranged in electric pole fixed point direction,
2) load movable pulley of the load rope in two-way movable pulley on hoist engine, and connect with sensor, it is subsequently attached to
On the lanyard point of electric pole top end,
3) start hoist engine, draw and tighten load rope preloaded, at this time electric pole top end be original state, do not restricted by load
Tractive force,
4) under preload condition, the position of adjustment load movable pulley and track movable pulley, so that connection hoist engine side adds
It carries rope and is parallel to the electric pole body of rod, and connect the other side load rope of electric pole top end perpendicular to the electric pole body of rod；
5) position of adjustment load movable pulley and track movable pulley, observes whether two-way movable pulley can smoothly slide, if
It cannot smoothly slide, need to carry out pulley surface processing or replacement pulley；
6) start hoist engine, traction load rope, electric pole top end is gradually downward, to the movement of testing bed, testing stand direction so that electric pole produces at this time
Raw bending, and two-way movable pulley by respectively and the sliding on load rope and steering fixed rope with electric pole top end to test
Pedestal direction is mobile,
7) after electric pole reaches the amount of deflection of setting, stop hoist engine, log.
Due to two-way movable pulley by respectively load rope and turn to fixed rope on sliding and with electric pole top end to
Testing bed, testing stand direction is mobile, therefore the load rope for connecting electric pole top end side is almost the change for being moved in translation, therefore loading rope
It is extremely small to change angle, by taking 15 nano composite material electric poles as an example, electric pole top end conventional methods and test method of the present invention
It tests respectively, it is assumed that when amount of deflection all reaches 1500mm, load rope is measured using conventional methods and test method of the present invention and is become
Changing angle is respectively 20 degree and 3 degree, it is seen that it is obvious that test method of the present invention reduces load rope direction change angle.This hair as a result,
The direction of the bright self-regulating function adjustment load rope by movable pulley, solves loading in electric pole mechanical property test loading procedure
The big problem of direction change of restricting guarantees that the simulation of electric pole finder charge is more acurrate；In addition, since the angle changing of load rope is small, it is several
Holding is vertical with electric pole, therefore less easy to fall off, it is ensured that the reliable and stable progress of test.
The present invention can be further specifically:
Line between the anchored site of two places and be 45 degree perpendicular to angle between the load rope direction of electric pole, in two-way movable pulley
In moving process, deviation is ± 20 degree.
In order to obtain very fast and more accurately adjust, the company between the anchored site of two places in the actual operation process
Line is with vertical load rope clamp angle preferably at 45 degree.And further limit its distance are as follows:
The distance between described two places anchored site is 3-5m.
In conclusion being adopted the present invention provides a kind of composite material electric pole mechanical test method and its experimental rig
The steering point of load wirerope is voluntarily adjusted according to the variation at composite material electric pole top end with slidable two-way movable pulley
It sets, to reduce the angle of load rope direction change in loading procedure, solves electric pole top end loading rope with top end direction of displacement
The problem of variation, loading electric pole top end, rope direction remains constant or direction change is little, guarantees electric pole finder charge mould
Intend it is more acurrate, in addition, due to load rope angle changing it is small, almost keep it is vertical with electric pole therefore less easy to fall off, it is ensured that try
The reliable and stable progress tested.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of composite material electric pole mechanical property test process described in background of invention.
Fig. 2 is structural representation of the composite material electric pole mechanical property test device of the present invention in electric pole original state
Figure.
Fig. 3 is structural schematic diagram of the composite material electric pole mechanical property test device of the present invention in the process of test.
The present invention is described further below with reference to embodiment.
Specific embodiment
Most preferred embodiment:
Referring to attached drawing 2, a kind of composite material electric pole mechanical property test device, include hoist engine 1, load rope 2, sensor 5,
Two-way movable pulley turns to fixed rope 8 and two places anchored site 9, and two-way movable pulley includes track movable pulley 71 and the dynamic cunning of load
Wheel 72, two movable pulleys are fixedly connected by bracket 73, and two places anchored site 9 is separately mounted to the outer space and cross of electric pole top end
To load rope lower section, distance is 3-5m between the anchored site of two places, the line between them and the load rope side perpendicular to electric pole
Angle is 45 degree between, and in two-way movable pulley moving process, deviation is ± 20 degree.
The both ends for turning to fixed rope 8 are separately connected two places anchored site 9, turn to and go here and there among fixed rope 8 around track movable pulley
71；One end of load rope 2 connects hoist engine 1, other end string around load movable pulley 72 turned to after connect sensor 5, and most
It is fixedly connected afterwards with electric pole top end.
Referring to attached drawing 2 and attached drawing 3, the test method of above-mentioned experimental rig includes the following steps:
1) a kind of experimental rig as described above is provided, electric pole is fixed using fixture, is fixed on testing bed, testing stand, in the middle part of electric pole
Pad coaster；Hoist engine is arranged in electric pole fixed point direction,
2) load movable pulley of the load rope in two-way movable pulley on hoist engine, connect with sensor after steering, then connects
It is connected on the lanyard point of electric pole top end,
3) start hoist engine, draw and tighten load rope preloaded, at this time electric pole top end be original state, do not restricted by load
Tractive force,
4) under preload condition, the position of adjustment load movable pulley and track movable pulley, so that connection hoist engine side adds
It carries rope and is parallel to the electric pole body of rod, and connect the other side load rope of electric pole top end perpendicular to the electric pole body of rod；
5) position of adjustment load movable pulley and track movable pulley, observes whether two-way movable pulley can smoothly slide, if
It cannot smoothly slide, need to carry out pulley surface processing or replacement pulley；
6) start hoist engine, traction load rope, electric pole top end is gradually downward, to the movement of testing bed, testing stand direction so that electric pole produces at this time
Raw bending, and two-way movable pulley by respectively and the sliding on load rope and steering fixed rope with electric pole top end to test
Pedestal direction is mobile,
7) after electric pole reaches the amount of deflection of setting, stop hoist engine, log.The angle changing for loading rope at this time is B,
It is about 3-5 degree.
Composite material electric pole mechanical test method of the invention and experimental rig solve electric pole mechanical property test and add
The big problem of loading rope direction change during load can make the load rope direction at electric pole top end remain that constant or direction becomes
Change less, guarantees that the simulation of electric pole finder charge is more acurrate.
The not described part of the present invention is same as the prior art.
Claims (4)
1. a kind of composite material electric pole mechanical property test device includes that hoist engine, load rope and sensor, feature exist
In, further include having two-way movable pulley, turning to fixed rope and two places anchored site, two-way movable pulley include track movable pulley and plus
Carry movable pulley, two movable pulleys are fixed by the bracket connection, two places anchored site be separately mounted to the outer space of electric pole top end with
Lower section, the both ends for turning to fixed rope are separately connected two places anchored site, and centre string is around track movable pulley；One end connection of load rope
Hoist engine, other end string connects sensor after load movable pulley, and is finally fixedly connected with electric pole top end.
2. a kind of composite material electric pole mechanical test method, which comprises the steps of:
1) a kind of composite material electric pole mechanical property test device as described in claim 1 is provided, electric pole is consolidated using fixture
It is fixed, it is fixed on testing bed, testing stand, coaster is padded in the middle part of electric pole；Hoist engine is arranged in electric pole fixed point direction,
2) load movable pulley of the load rope in two-way movable pulley on hoist engine, and connect with sensor, it is subsequently attached to
On the lanyard point of electric pole top end,
3) start hoist engine, draw and tighten load rope preloaded, at this time electric pole top end be original state, do not restricted by load
Tractive force,
4) under preload condition, the position of adjustment load movable pulley and track movable pulley, so that connection hoist engine side adds
It carries rope and is parallel to the electric pole body of rod, and connect the other side load rope of electric pole top end perpendicular to the electric pole body of rod；
5) position of adjustment load movable pulley and track movable pulley, observes whether two-way movable pulley can smoothly slide, if
It cannot smoothly slide, need to carry out pulley surface processing or replacement pulley；
6) start hoist engine, traction load rope, electric pole top end is gradually downward, to the movement of testing bed, testing stand direction so that electric pole produces at this time
Raw bending, and two-way movable pulley by respectively and the sliding on load rope and steering fixed rope with electric pole top end to test
Pedestal direction is mobile,
7) after electric pole reaches the amount of deflection of setting, stop hoist engine, log.
3. a kind of composite material electric pole mechanical property test device according to claim 1, which is characterized in that two places anchoring
Line between site and be 45 degree perpendicular to angle between the load rope direction of electric pole, in two-way movable pulley moving process,
Deviation is ± 20 degree.
4. a kind of composite material electric pole mechanical property test device according to claim 1, which is characterized in that the two places
The distance between anchored site is 3-5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348847.9A CN109406298B (en) | 2017-12-15 | 2017-12-15 | Composite material pole mechanical property test method and test device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348847.9A CN109406298B (en) | 2017-12-15 | 2017-12-15 | Composite material pole mechanical property test method and test device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109406298A true CN109406298A (en) | 2019-03-01 |
| CN109406298B CN109406298B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711348847.9A Active CN109406298B (en) | 2017-12-15 | 2017-12-15 | Composite material pole mechanical property test method and test device thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044385A (en) * | 2019-12-24 | 2020-04-21 | 国际竹藤中心 | Bamboo load resistance measuring device and bamboo load resistance measuring method |
| CN112798266A (en) * | 2021-03-10 | 2021-05-14 | 安徽送变电工程有限公司 | Axial pressure detection method applied to hoisting of bearing part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044385A (en) * | 2019-12-24 | 2020-04-21 | 国际竹藤中心 | Bamboo load resistance measuring device and bamboo load resistance measuring method |
| CN112798266A (en) * | 2021-03-10 | 2021-05-14 | 安徽送变电工程有限公司 | Axial pressure detection method applied to hoisting of bearing part |
| CN112798266B (en) * | 2021-03-10 | 2022-07-01 | 安徽送变电工程有限公司 | Axial pressure detection method applied to hoisting of bearing part |
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| CN109406298B (en) | 2023-11-10 |
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