CN109374249A - Analog conducting wire carries out the wire clamp test platform of arbitrary curve swing under wind excitation - Google Patents
Analog conducting wire carries out the wire clamp test platform of arbitrary curve swing under wind excitation Download PDFInfo
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- CN109374249A CN109374249A CN201811326425.6A CN201811326425A CN109374249A CN 109374249 A CN109374249 A CN 109374249A CN 201811326425 A CN201811326425 A CN 201811326425A CN 109374249 A CN109374249 A CN 109374249A
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 230000005284 excitation Effects 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 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 abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000004088 simulation Methods 0.000 claims abstract description 24
- 230000009471 action Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 17
- 238000007667 floating Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
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- 239000007787 solid Substances 0.000 claims 1
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- 239000000463 material Substances 0.000 description 6
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- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 239000004411 aluminium Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- G01M7/06—Multidirectional test stands
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Abstract
The invention discloses a kind of wire clamp test platforms of analog conducting wire progress arbitrary curve swing under wind excitation.Wire clamp test platform of the invention includes pedestal, and the pedestal is equipped with the swinging end positioned at left side, positioned at the fixing end on right side and positioned at simulation arbitrary curve device between the two；The swinging end is for driving transmission pressure to swing, to simulate the vibration of transmission pressure under wind incentive action, fixing end then is used to fix the other end of transmission pressure；The simulation arbitrary curve device includes support frame, sliding block pedestal, pinching screw, sliding block capping, several strip sliding blocks, axle sleeve, self-aligning roller bearing, guide wheel and curvilinear mold；The axle sleeve covers on transmission pressure, and the self-aligning roller bearing covers on axle sleeve, and the guide wheel covers on self aligning roller bearing outer ring.The simulation wind incentive action of a variety of excited frequencies, amplitude and curve can be achieved in the present invention, easy to use, provides conveniently for the failure Mechanism of wire clamp.
Description
Technical field
The present invention relates to wire clamp experimental rig, specifically a kind of simulation transmission pressure carries out any song under wind excitation
The dynamic wire clamp test platform of string pendulum.
Technical background
Wire clamp is one of key element in network system.The fracture of wire clamp will lead to the interruption electrically conveyed, seriously
When may cause the power failure of large area.It replaces artificial and material cost involved in a wire clamp and is as high as tens of thousands of members, and have a power failure
Caused by national economy loss it is even more inestimable.
From the daily checking maintenance of Zhejiang electric power saving system, discovery largely may cause the potential risk of wire clamp fracture, i.e.,
There is different degrees of cracking in many wire clamps, such as:
In October, (1) 2015 Electric Power Transmission & transformation Company of province be responsible for implement the main transformer of 1000 kilovolts of Anjis station 2 and thirdly side apparatus C inspection
During upkeep operation, find with the presence of part wire clamp cracking phenomena.
In March, (2) 2016, overhauling company of Zhejiang Province found grey 5817 line of wild goose and grey wild goose 5807 in the grey 5817 line maintenance of wild goose
There is the problems such as cracking, deformation in the multiple strain clamp drainage plates of line.
In May, (3) 2016, completely totally 888 strain clamps carried out for 36 base anchor supports and 2 side door type frame to three Pus, 5805 line
It checks, there are crackles for discovery 18 base anchor support, 24 drainage plates.
(4) 500 kilovolts of June it is wonderful west become it is wonderful contain 5822 line interruption maintenance of 5821 lines and wonderful mountain during, find part outlet
There are cracking phenomenas etc. for door frame cross-line strain clamp welding position.
It is reported from Related domestic documents, also there is wire clamp cracking phenomena in the provinces such as Xinjiang, Qinghai, Sichuan and Jiangxi,
This phenomenon has certain generality.However, checking the Specification of domestic wire clamp, the size of product is usually specified only
Form lacks from material, design, manufacture, inspection, installation and uses in inspection alllife range compared with system regulation.
Currently, the phenomenon more than wire clamp cracking is related to wire clamp failure mechanism understanding deficiency with people, with lacking for relevant criterion
It is weary related, lack to relevant safeguard technology also related.Such as in some documents, think that wire clamp cracking is to use to contain
The more casting aluminium of defect has direct relation, but with deep analysis is lacked, fails the explanation of quantitative.In fact,
China casts aluminum wire clamp and uses or wide, is will appear tight within the scope of all use occasions and service life
The cracking phenomena of weight.As it can be seen that they will also be with environmental factor, especially ambient wind size is directly related.But due to people couple
Wire clamp failure mechanism understanding is insufficient, does not provide specific wire clamp material, design, manufacture, inspection, installation and using the side such as checking
The specification in face and relevant detection means carry out type selecting usually in accordance with empirical method at present, this is that current wire clamp is caused to crack
The more reason for it of phenomenon.
Due to the complexity of wind excited vibration, simulating lab test is the important research means for studying wire clamp failure mechanism.
However, the test about the wire clamp simulation test of transmission pressure wind excited vibration to wire clamp failure mechanism domestic at present
The case of research is less, and the oscillating curve of existing analogue test platform simulation is relatively simple, cannot meet reality well
The conductor vibration situation on border, so that experimental result and true situation have relatively large deviation.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the problems of the above-mentioned prior art, a kind of structure letter is provided
Simulation transmission pressure single, easy to use and strong applicability carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
It is provided conveniently for the failure Mechanism of wire clamp.
For this purpose, the present invention adopts the following technical scheme that: analog conducting wire carries out the line of arbitrary curve swing under wind excitation
Press from both sides test platform comprising pedestal, the pedestal are equipped with the swinging end positioned at left side, the fixing end positioned at right side and are located at
Simulation arbitrary curve device between the two；
The swinging end is for driving transmission pressure to swing, so that the vibration of transmission pressure under wind incentive action is simulated, it is fixed
End is then for fixing the other end of transmission pressure；
The simulation arbitrary curve device includes support frame, sliding block pedestal, pinching screw, sliding block covers, several strips are slided
Block, axle sleeve, self-aligning roller bearing, guide wheel and curvilinear mold；
On the base, on the support frame, sliding block pedestal and sliding block cover for the sliding block pedestal installation for the support frame installation
A rectangular space is formed, several strip sliding blocks upper in the rectangular space of sliding block pedestal and sliding block capping composition can glide
It is dynamic, curvilinear mold is fixedly connected at the top of rectangular space, the top of several strip sliding blocks is withstood in curvilinear mold, makes several strips
The bottom end of sliding block forms the curved surface as curvilinear mold bottom end, and the side wall of sliding block pedestal is equipped with pinching screw, tightens pinching screw
It is clamped several strip sliding blocks, strip sliding block no longer slides under the action of frictional force；Guide wheel is used for along strip
It is rolled on the curved surface that sliding block bottom end is formed；
The axle sleeve covers on transmission pressure, and the self-aligning roller bearing covers on axle sleeve, and the guide wheel is covered in aligning
On roller bearing outer ring.
Supplement as above-mentioned technical proposal, the fixing end include sensor support riser, load cell, sensing
Device baffle, spring stop, die springs, spring floating plate, fixed end terminal fixed plate, wire clamp, fixing end slide plate, straight line are sliding
Rail assembly, fixing end bottom plate, cylinder guide rod, linear bearing, cylinder guide rod fixing support rack；
The fixing end bottom plate, which is bolted, to be fixed on the base, and fixing end bottom plate is machined with groove milling, passes to install
Sensor supports riser and line slide rail component；
The sensor support riser, which is bolted, to be fixed on the base, and through-hole is equipped on sensor support riser, is used
Installation load cell is bolted, then benefit is fixed by bolts in sensor bezel for the other side of load cell,
Cylinder guide rod fixing support rack, the company of being bolted between sensor bezel and spring stop are further fixed in sensor bezel
It connects；
The die springs two sides are separately fixed in the cylindrical deep gouge on spring stop and spring floating plate, spring floating
Plate, which is bolted, to be fixed in fixing end slide plate；
The cylinder guide rod side is fastened by cylinder guide rod fixing support rack, and passes through through-hole, mold on spring stop
Through-hole on spring bores, spring floating plate, the other side are mounted on spring floating plate by linear bearing support；
The fixing end slide plate is equipped with counterbore, is bolted and is connected with line slide rail component, relatively fixed end bottom plate
It horizontally slips, fixed end terminal fixed plate is also equipped in fixing end slide plate；
The wire clamp, which is bolted, to be fixed in fixed end terminal fixed plate, to fasten transmission pressure.
Supplement as above-mentioned technical proposal, the fixing end further include radial force sensor supporting vertical plate, radial force
Sensor support bottom plate, radial force sensor rotating bar, rotation handwheel and radial force sensor；Radial force sensor and wire clamp
Outer wall is used cooperatively；
The radial force sensor supporting vertical plate is bolted on radial force sensor support baseboard, radial force sensing
Device rotating bar is mounted in radial force sensor supporting vertical plate, and radial force sensor rotating bar is screw rod, and radial force sensor turns
The inner end of lever is installed by radial force sensor, outer end installation rotation handwheel.
Supplement as above-mentioned technical proposal, the radial force sensor support baseboard installation is on the base.
Supplement as above-mentioned technical proposal also posts foil gauge on the wire clamp.
Supplement as above-mentioned technical proposal, the axle sleeve and transmission pressure clearance fit, the aligning roller axis
It holds and is interference fitted with axle sleeve, the guide wheel and self-aligning roller bearing are interference fitted.
Supplement as above-mentioned technical proposal, the end rounded corner of the strip sliding block, the face in addition to fillet are thick
It is rough.
Supplement as above-mentioned technical proposal, the swinging end include swinging end bottom plate, servo motor, for the company of fastening
Connect the parallel groove clamp component and wire clamp fixed plate of transmission pressure side；The output shaft of servo motor is equipped with flexible sheet shaft coupling,
It is equipped between flexible sheet shaft coupling and wire clamp fixed plate to core type slider-crank mechanism, passes through the rotation realization pair of servo motor
The movement of core type slider-crank mechanism.
Supplement as above-mentioned technical proposal, it is described to core type slider-crank mechanism include rotating disk, rod slide seat,
Connecting rod, square bearing of usheing to seat, flange sliding block axis, swinging end slide plate and line slide rail component；
The rotating disk is connect in stepped shaft end with flexible sheet shaft coupling, the disk side of rotating disk be provided with groove milling and multiple groups by
The symmetrical threaded hole of set distance uses bolt by groove milling and one group of threaded hole and rod slide seat side in disk side
Connection, the two sides of connecting rod are connected with rod slide seat and flange sliding block axis respectively by square bearing of usheing to seat, and flange sliding block axis is logical
Bolt is crossed to be fixedly connected in swinging end slide plate；Swinging end slide plate is fixedly connected with line slide rail component, and it is above-mentioned right to be formed
" sliding block " in core type slider-crank mechanism；
Equipped with thick vertical plate is supported on the swinging end bottom plate, a guide-track groove is formed at the top of the support thickness vertical plate side, this is led
Track slot is used to install the line slide rail component.
Supplement as above-mentioned technical proposal, the swinging end further include supporting thick vertical plate block and with cap long bolt,
It supports thick vertical plate block to be bolted to fix on the base；The screw thread supported on thick vertical plate block is passed through with cap long bolt
Hole, side are held out against on supporting thick vertical plate.
The device have the advantages that as follows:
1, compact-sized, it can be achieved that a variety of excited frequencies, amplitude and curve simulation wind incentive action, it is easy to use, be line
The failure Mechanism of folder provides convenient.
2, strong applicability, can be used for wire clamp material, design, manufacture, inspection, installation and using check etc. specification and
Relevant detection.
Detailed description of the invention
Fig. 1 is the entirety for the wire clamp test platform that present invention simulation transmission pressure carries out arbitrary curve swing under wind excitation
Schematic diagram；
Fig. 2 is the front view for the wire clamp test platform that present invention simulation transmission pressure carries out arbitrary curve swing under wind excitation；
Fig. 3 is the top view for the wire clamp test platform that present invention simulation transmission pressure carries out arbitrary curve swing under wind excitation；
Fig. 4 is that present invention simulation transmission pressure carries out the wire clamp test platform of arbitrary curve swing along the direction B-B under wind excitation
Cross-sectional view；
Fig. 5 is that present invention simulation transmission pressure carries out the wire clamp test platform of arbitrary curve swing along the direction A-A under wind excitation
Cross-sectional view；
Fig. 6 is the schematic diagram of present invention simulation arbitrary curve device；
Fig. 7 is the main view of present invention simulation arbitrary curve device；
Fig. 8 is the top view of present invention simulation arbitrary curve device；
Fig. 9 is the present invention to core type crank slide mechanism motion feature schematic diagram；
Figure 10 is schematic diagram of the present invention to core type slider-crank mechanism.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figure 1, 2, 3, the wire clamp test that a kind of simulation transmission pressure carries out arbitrary curve swing under wind excitation is put down
Platform, by pedestal, the swinging end being located on the left of pedestal, the fixing end being located on the right side of pedestal and between swinging end and fixing end
Arbitrary curve device composition is simulated, the pedestal is made of cast iron platform 1 and connecting bottom board 23.Swinging end and fixing end are all pacified
On cast iron platform 1, simulation arbitrary curve device is mounted on connecting bottom board 23.Swinging end is driven with certain frequency and amplitude
Transmission pressure 22 is swung, to simulate the vibration of overhead power transmission conducting wire under wind incentive action, fixing end is then used for fixed transmission of electricity and leads
The other end of line 22.Swinging end includes swinging end bottom plate 2, motor mounting plate 3, reinforcing rib 4, servo motor 5, flexible sheet shaft coupling
Device 6, end cap 7 support thick vertical plate 8, end cap 9, rotating disk 10, rod slide seat 11, square bearing 12 of usheing to seat, connecting rod 13, flange
Sliding block axis 14, swinging end slide plate 16, parallel groove clamp component 17, swings end terminal fixed plate 18, reinforces line slide rail component 15
Gusset 19 supports thick vertical plate block 20 and with cap long bolt 21.
Such as Fig. 4, it is machined with kidney slot on swinging end bottom plate 2, is connected to swinging end bottom plate 2 using bolt across kidney slot
On cast iron platform 1.It is also machined with counter sink on swinging end bottom plate 2, to install motor mounting plate 3, fixed stiffener plate 4, branch
Support thick vertical plate 8.
Stiffener plate 4 improves structural stability to fixed motor mounting plate 3, the thick vertical plate 8 of support etc..
Servo motor 5 is mounted on motor mounting plate 3.
Flexible sheet shaft coupling 6 is to connect servo motor 5 and rotating disk 10.
It supports thick vertical plate 8 to be fixedly mounted on swinging end bottom plate 2 by sunk screw, and structure is improved with stiffener plate 4
Stability.Supporting on thick vertical plate 8 has through-hole, and rotating disk 10 and installation end cap 7, end cap 9 are supported by bearing.Support is thick vertical
A side milling guide-track groove on plate 8, to install line slide rail component 15.
Rotating disk 10, rod slide seat 11, square bearing 12 of usheing to seat, connecting rod 13, flange sliding block axis 14, line slide rail component
15, swinging end slide plate 16 is collectively constituted to core type slider-crank mechanism.
The structure of rotating disk 10 has rectangle groove milling and symmetrical at a certain distance as shown in Fig. 4,10, in disk side
Threaded hole.Rotating disk 10 is connected in stepped shaft end with flexible sheet shaft coupling 6, disk side by rectangle groove milling and threaded hole with
11 side of rod slide seat forms and is bolted.Selecting different threaded hole groups to install can get different size of rod slide seat
11 and 10 center of rotating disk away from being the above-mentioned length to crank in core type slider-crank mechanism.
13 two sides of connecting rod are connected with rod slide seat 11, flange sliding block axis 14 respectively by square bearing 12 of usheing to seat.
Flange sliding block axis 14, which is bolted, to be fixed in swinging end slide plate 16.14 centre-height of flange sliding block axis with
10 centre-height of rotating disk is identical.
Swinging end slide plate 16 is connected with line slide rail component 15, that is, is formed above-mentioned in core type slider-crank mechanism
" sliding block " element.
It swings end terminal fixed plate 18 to be fixedly mounted in swinging end slide plate 16 by sunk screw, and with stiffener plate
19 improve structural stability.
Parallel groove clamp component 17 is bolted to be fixed on and swing in end terminal fixed plate 18, to fasten transmission pressure
22。
It supports thick vertical plate block 20 to be bolted to be fixed on cast iron platform 1.It is thick that band cap long bolt 21 passes through support
Threaded hole on vertical plate block 20, side are held out against on supporting thick vertical plate 8.
As shown in figure 5, fixing end includes sensor support riser 24, load cell 25, sensor bezel 26, spring catch
Plate 27, die springs 28, spring floating plate 29, fixed end terminal fixed plate 30, wire clamp 31, fixing end slide plate 32, straight line are sliding
Rail assembly 33, fixing end bottom plate 34, radial force sensor supporting vertical plate 35, radial force sensor support baseboard 36, rotation handwheel
37, the fixed branch of radial force sensor rotating bar 38, radial force sensor 39, cylinder guide rod 40, linear bearing 41 and cylinder guide rod
Support 42.
Fixing end bottom plate 34, which is bolted, to be fixed on cast iron platform 1.Fixing end bottom plate 34 is machined with groove milling, to
Sensor support riser 24, line slide rail component 33 are installed.
Sensor support riser 24, which is bolted, to be fixed on cast iron platform 1, and is improved and stablized with stiffener plate 4
Property.It is equipped with through-hole on sensor support riser 24, installation load cell 25 is bolted.Load cell 25 is another
Then benefit is fixed by bolts in sensor bezel 26 for side, and load cell 25 is arranged symmetrically makes each sensor dynamometry approximation phase
Deng.Cylinder guide rod fixing support rack 42 is further fixed in sensor bezel 26.Lead between sensor bezel 26 and spring stop 27
Bolt is crossed to be fixedly connected.
28 two sides of die springs are separately fixed in the cylindrical deep gouge on spring stop 27 and spring floating plate 29.
Spring floating plate 29, which is bolted, to be fixed in fixing end slide plate 32, and is improved and stablized with stiffener plate 19
Property.
40 side of cylinder guide rod by cylinder guide rod fixing support rack 42 fasten, and pass through spring stop 27 on through-hole,
Through-hole on 28 inner hole of die springs, spring floating plate 29, the other side are mounted on spring floating plate by the support of linear bearing 41
On 29.
Fixing end slide plate 32 is equipped with counterbore and is bolted to be connected with line slide rail component 33, can fix end bottom relatively
Plate 34 horizontally slips.Fixed end terminal fixed plate 30 is also equipped in fixing end slide plate 32.
Wire clamp 31, which is bolted, to be fixed in fixed end terminal fixed plate 30, to fasten transmission pressure 22.
Radial force sensor supporting vertical plate 35 is bolted on radial force sensor support baseboard 36, and radial force passes
Sensor rotating bar 38 is mounted in radial force sensor supporting vertical plate 35, and radial force sensor rotating bar 38 is screw rod, radial force
The inner end of sensor rotation bar 38 is installed by radial force sensor 39, outer end installation rotation handwheel 37.Rotation handwheel can make bar
Advance or retreat, the size of radial force can be measured by being installed with radial force sensor 39 on rotation handwheel 37.
Foil gauge 311 is also posted on wire clamp 31, foil gauge 311 is demarcated before use, and scaling method is to survey
Examination forward start wheel 37 promotion radial force sensors 39 slowly move forward and backward, record the corresponding strain of each power of force snesor
The voltage swing of piece 311 obtains power-voltage curve of accurate foil gauge 311 with this.
As shown in Fig. 6,7,8, simulation arbitrary curve device is by strip sliding block 43, sliding block pedestal 44, pinching screw 45, cunning
Block covers 46, axle sleeve 47, self-aligning roller bearing 48, guide wheel 49,50,120 ° of support frame 51,90 ° of connector connector 52 and curve
Mould 53 forms, and support frame 50 is attached and is fixed by 120 ° of connector 53 and 90 ° connecting lines 52.
Support frame 50 is fixed on connecting bottom board 23,47 sets of axle sleeve on transmission pressure 22, clearance fit, aligning roller axis
It holds 48 sets to be interference fitted on axle sleeve 47,49 sets of guide wheel on 48 outer ring of self-aligning roller bearing, are interference fitted, sliding block 43 is that have
Made of high-intensitive material, end rounded corner, face in addition to fillet is coarse to have very big frictional force.
46 one rectangular space of composition of sliding block pedestal 44 and sliding block capping, strip sliding block 43 can be along sliding block pedestal 44
It is slided up and down with the rectangular space of 46 composition of sliding block capping, several strip sliding blocks 43 are withstood in curvilinear mold 53, and curvilinear mold 53 can
It is made of foam or other materials for being easy cutting, so that strip sliding block bottom end forms the curve as curvilinear mold 53,
Strip sliding block 43 under the action of pinching screw 45 makes strip sliding block 43 be clamped in frictional force is tightened later no longer to slide.It leads
It is rolled on the curve that wheel 49 can be formed along strip sliding block bottom end.
Since the curve that strip sliding block 43 forms is the curve being made of many circular arcs, in guide wheel 49 along curve
Tiny vibration is had during movement, and the high-frequency vibration of lower transmission pressure 22 is motivated for simulating wind, is come so that simulating
Vibration be more in line with reality.
The course of work of the invention is as follows:
Firstly, as shown in figure 4, selecting a threaded hole group installing connecting rods sliding seat 11 in rotating disk 10, that is, obtaining centainly big
Small rod slide seat 11 and 10 center of rotating disk is away from being the length to crank in core type slider-crank mechanism.And according to right
The architectural characteristic of core type slider-crank mechanism, as shown in figure 9, the displacement of sliding block is begun when a length of a of crank, a length of b of connecting rod and a≤b
Eventually between (b-a), (b+a), the middle position of slide block movement is always b.Therefore, different screw thread group, that is, different is being selected
When crank length is installed, swinging end slide plate 16 will be sliding along line slide rail component 15 or so centered on a certain fixed point always
It is dynamic, and swinging end slide plate 16 horizontally slips stroke as 2a, the movement of swinging end slide plate 16 is nearly sinusoidal motion.
Later, it is connected between swinging end bottom plate 2 and cast iron platform 1 but not exclusively tightens, enable swinging end bottom plate 2
It horizontally slips on cast iron platform 1.
Later, rotation band cap long bolt 21 makes that thick vertical plate 8 is supported to move to left, then swinging end bottom plate 2 and on swinging end bottom plate 2
All components of installation will be moved to the left therewith, so that 22 tension of transmission pressure between swinging end and fixing end generates centainly
Pretightning force, transmission pressure 22 drive the fixing end slide plate 32 in the fixing end of right side to slide to the left along line slide rail component 33,
To make die springs 28 compress, the size of current 22 pretightning force of transmission pressure would know that using load cell 25.
After current 22 pretightning force of transmission pressure reaches requirement of experiment numerical value, that is, tighten for connecting swinging end bottom plate 2 and casting
The bolt of iron platform 1 prevents swinging end bottom plate 2 from horizontally slipping relative to cast iron platform 1.
Finally, the starting of servo motor 5 drives flexible sheet shaft coupling 6 and rotating disk 10 to rotate, it is sliding by rotating disk 10, connecting rod
Dynamic seat 11, square bearing 12 of usheing to seat, connecting rod 13, flange sliding block axis 14, line slide rail component 15,16 common groups of swinging end slide plate
At core type slider-crank mechanism is moved therewith.It is defeated under the action of guide wheel 49 to drive 22 1 side oscillation of transmission pressure
It is moved on the curve that electric lead 22 is formed along strip sliding block 43, that is, simulates overhead power transmission conducting wire in wind incentive action lower edge
A certain curve vibration.And fixing end slide plate 32 is sliding along line slide rail component 15 or so under the action of transmission pressure 22
It is dynamic, while compression or drawing die spring 28, while when side-to-side vibrations, wire clamp 31 generates deformation and drives answering for its surface
Becoming piece 311, deformation occurs, and the size of power suffered by wire clamp 31 can be found out according to the power-voltage curve demarcated in advance.
Using the platform, by adjusting the revolving speed of servo motor 5, can get frequency that different transmission pressures 22 is swung and
Curve；Adjust rod slide seat 11 and 10 center of rotating disk away from when, i.e., changeable swinging end slide plate 16 horizontally slips stroke, also
That is the amplitude of the swing of transmission pressure 22；The oscillating curve of transmission pressure 22 may be implemented by replacing different curvilinear molds 53.
Therefore, which, which can realize, realizes the excitation vibration of arbitrary curve wire clamp wind under the wind incentive action of different frequency and amplitude
Dynamic simulation, for carrying out experimental study of the wire clamp wind excited vibration simulation test to wire clamp failure mechanism.
Claims (10)
1. analog conducting wire carries out the wire clamp test platform of arbitrary curve swing, including pedestal under wind excitation, which is characterized in that institute
The pedestal stated is equipped with the swinging end positioned at left side, the fixing end positioned at right side and positioned at simulation arbitrary curve dress between the two
It sets；
The swinging end is for driving transmission pressure (22) to swing, so that the vibration of transmission pressure under wind incentive action is simulated,
Fixing end is then used to fix the other end of transmission pressure (22)；
The simulation arbitrary curve device includes support frame (50), sliding block pedestal (44), pinching screw (45), sliding block capping
(46), several strip sliding blocks (43), axle sleeve (47), self-aligning roller bearing (48), guide wheel (49) and curvilinear mold (53)；
On the base, the sliding block pedestal (44) is mounted on support frame (50), sliding block pedestal for the support frame installation
(44) and sliding block capping (46) forms a rectangular space, and several strip sliding blocks (43) can seal in sliding block pedestal (44) and sliding block
It slides up and down, is fixedly connected at the top of rectangular space curvilinear mold (53) in the rectangular space of lid (46) composition, several strips are sliding
The top of block (43) is withstood on curvilinear mold (53), forms the bottom end of several strip sliding blocks as curvilinear mold (53) bottom end
The side wall of curved surface, sliding block pedestal (44) is equipped with pinching screw (45), and tightening pinching screw (45) makes several strip sliding blocks (43)
It is clamped, strip sliding block (43) no longer slides under the action of frictional force；Guide wheel (49) is used for along strip sliding block bottom end
It is rolled on the curved surface of formation；
The axle sleeve (47) covers on transmission pressure (22), and the self-aligning roller bearing (48) covers on axle sleeve (47), institute
The guide wheel (49) stated covers on self-aligning roller bearing (48) outer ring.
2. analog conducting wire according to claim 1 carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
It is characterized in that,
The fixing end includes sensor support riser (24), load cell (25), sensor bezel (26), spring stop
(27), die springs (28), spring floating plate (29), fixed end terminal fixed plate (30), wire clamp (31), fixing end slide plate
(32), the fixed branch of line slide rail component (33), fixing end bottom plate (34), cylinder guide rod (40), linear bearing (41), cylinder guide rod
Support (42)；
The fixing end bottom plate (34), which is bolted, to be fixed on the base, and fixing end bottom plate (34) is machined with groove milling, uses
To install sensor support riser (24) and line slide rail component (33)；
The sensor support riser (24), which is bolted, to be fixed on the base, and sensor support riser is equipped on (24)
Through-hole, installation load cell (25) is bolted, the other side of load cell (25) is then fixed using bolt
On sensor bezel (26), cylinder guide rod fixing support rack (42), sensor bezel are further fixed in sensor bezel (26)
(26) it is bolted to connection between spring stop (27)；
It is heavy that described die springs (28) two sides are separately fixed at the cylinder on spring stop (27) and spring floating plate (29)
In slot, spring floating plate (29), which is bolted, to be fixed on fixing end slide plate (32)；
Cylinder guide rod (40) side is fastened by cylinder guide rod fixing support rack (42), and is passed through on spring stop (27)
Through-hole, die springs (28) inner hole, the through-hole on spring floating plate (29), the other side passes through linear bearing (41) support installation
On spring floating plate (29)；
The fixing end slide plate (32) is equipped with counterbore, is bolted and is connected with line slide rail component (33), relatively solid
Fixed end bottom plate (34) horizontally slips, and fixed end terminal fixed plate (30) is also equipped in fixing end slide plate (32)；
The wire clamp (31), which is bolted, to be fixed on fixed end terminal fixed plate (30), to fasten transmission pressure
(22)。
3. analog conducting wire according to claim 2 carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
Be characterized in that, the fixing end further include radial force sensor supporting vertical plate (35), radial force sensor support baseboard (36),
Radial force sensor rotating bar (38), rotation handwheel (37) and radial force sensor (39)；Radial force sensor (39) and wire clamp
(31) outer wall is used cooperatively；
The radial force sensor supporting vertical plate (35) is bolted on radial force sensor support baseboard (36), diameter
It is mounted on radial force sensor supporting vertical plate (35) to force snesor rotating bar (38), radial force sensor rotating bar (38) is
Radial force sensor (39) are installed in the inner end of screw rod, radial force sensor rotating bar (38), outer end installation rotation handwheel (37).
4. analog conducting wire according to claim 3 carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
It is characterized in that, radial force sensor support baseboard (36) installation is on the base.
5. analog conducting wire according to claim 2 or 3 carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
It is characterized in that, also posting foil gauge (311) on the wire clamp (31).
6. the wire clamp test that analog conducting wire according to claim 1-4 carries out arbitrary curve swing under wind excitation
Platform, which is characterized in that the axle sleeve (47) and transmission pressure (22) clearance fit, the self-aligning roller bearing (48) with
Axle sleeve (47) interference fit, the guide wheel (49) and self-aligning roller bearing (48) are interference fitted.
7. the wire clamp test that analog conducting wire according to claim 1-4 carries out arbitrary curve swing under wind excitation
Platform, which is characterized in that the end rounded corner of the strip sliding block (43), the face in addition to fillet are coarse.
8. the wire clamp test that analog conducting wire according to claim 1-4 carries out arbitrary curve swing under wind excitation
Platform, which is characterized in that the swinging end includes swinging end bottom plate (2), servo motor (5), leads for being fastenedly connected transmission of electricity
The parallel groove clamp component (17) and wire clamp fixed plate (18) of line side；The output shaft of servo motor (5) is equipped with flexible sheet shaft coupling
Device (6) is equipped with to core type slider-crank mechanism between flexible sheet shaft coupling (6) and wire clamp fixed plate (18), passes through servo electricity
The movement to core type slider-crank mechanism is realized in the rotation of machine (5).
9. analog conducting wire according to claim 8 carries out the wire clamp test platform of arbitrary curve swing under wind excitation,
Be characterized in that, it is described include rotating disk (10) to core type slider-crank mechanism, rod slide seat (11), connecting rod (13), usher to seat
Square bearing (12), flange sliding block axis (14), swinging end slide plate (16) and line slide rail component (15)；
The rotating disk (10) is connect in stepped shaft end with flexible sheet shaft coupling (6), and the disk side of rotating disk (10) is provided with
Groove milling and multiple groups press the symmetrical threaded hole of set distance, pass through groove milling and one group of threaded hole and rod slide seat in disk side
Side is connected by screw bolts, the two sides of connecting rod (12) by square bearing of usheing to seat (13) respectively with rod slide seat (11) and flange
Sliding block axis (14) is connected, and flange sliding block axis (14) is bolted to connection on swinging end slide plate (16)；Swinging end sliding rail
Plate (16) is fixedly connected with line slide rail component (15), forms above-mentioned " sliding block " in core type slider-crank mechanism；
Equipped with thick vertical plate (8) is supported on the swinging end bottom plate (2), the top of support thickness vertical plate (8) side forms one and leads
Track slot, the guide-track groove are used to install the line slide rail component (15).
10. the wire clamp examination that analog conducting wire according to claim 1-4 carries out arbitrary curve swing under wind excitation
Test platform, which is characterized in that the swinging end further includes supporting thick vertical plate block (20) and with cap long bolt (21), support thickness
Vertical plate block (20), which is bolted, to be fixed on the base；It passes through and is supported on thick vertical plate block (20) with cap long bolt (21)
Threaded hole, side are held out against on supporting thick vertical plate (8).
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|---|---|---|---|
| CN201811326425.6A CN109374249B (en) | 2018-11-08 | 2018-11-08 | Wire clamp test platform for simulating random curve swing of wire under wind excitation |
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|---|---|---|---|
| CN201811326425.6A CN109374249B (en) | 2018-11-08 | 2018-11-08 | Wire clamp test platform for simulating random curve swing of wire under wind excitation |
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| CN109374249B CN109374249B (en) | 2023-12-26 |
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Cited By (2)
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| CN114910243A (en) * | 2022-07-19 | 2022-08-16 | 国网山东省电力公司单县供电公司 | Wind power vibration simulation test device for power transmission line |
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