CN109406083B - Suspension string hardware wind excitation vibration abrasion simulation test platform - Google Patents
Suspension string hardware wind excitation vibration abrasion simulation test platform Download PDFInfo
- Publication number
- CN109406083B CN109406083B CN201811327424.3A CN201811327424A CN109406083B CN 109406083 B CN109406083 B CN 109406083B CN 201811327424 A CN201811327424 A CN 201811327424A CN 109406083 B CN109406083 B CN 109406083B
- Authority
- CN
- China
- Prior art keywords
- plate
- fixed end
- platform
- axis motion
- sliding rail
- 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
- 230000005284 excitation Effects 0.000 title claims abstract description 73
- 239000000725 suspension Substances 0.000 title claims abstract description 73
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000004088 simulation Methods 0.000 title claims abstract description 24
- 238000005299 abrasion Methods 0.000 title claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims description 14
- 229910001018 Cast iron Inorganic materials 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000003801 milling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 239000013589 supplement Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010959 steel Substances 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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
-
- 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
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a suspension string hardware wind excitation vibration abrasion simulation test platform. The technical scheme adopted by the invention comprises a base, wherein the base is provided with a swinging end positioned at the left side, a fixed end positioned at the right side and a suspension string hardware fitting positioned between the swinging end and the fixed end; a support frame is arranged between the swing end and the fixed end, and the left side surface and the right side surface of the upper part of the support frame are respectively provided with an XY axis motion excitation platform; the trunnion hanging plate of the suspension serial hardware fitting is arranged in the support frame, two ends of a shaft positioned at the upper part of the trunnion hanging plate are respectively connected to XY-axis motion excitation platforms on the left side surface and the right side surface of the support frame, and the XY-axis motion excitation platform drives the suspension serial hardware fitting to move in the X-axis direction and the Y-axis direction; the XY axis motion excitation platform is provided with a vibration measuring sensor; the vibration measuring sensor is connected with a measuring and controlling system of an XY axis motion excitation platform. The invention can realize the simulation of the large-amplitude swing and breeze vibration of the power transmission wire at the same time, and can realize the simulation of various vibration frequencies and amplitudes.
Description
Technical Field
The invention relates to a suspension string hardware fitting test device, in particular to a suspension string hardware fitting wind excitation vibration abrasion simulation test platform.
Technical Field
The suspension string hardware fitting is widely used in overhead power lines and is generally used for connecting a power transmission tower with a wire. The single-connection double-wire-clamp suspension string hardware fitting consists of a trunnion hanging plate, a right-angle hanging plate, a yoke plate and a pre-twisted double-suspension wire clamp, wherein all adjacent parts are connected through bolts and nuts, the other end of the trunnion hanging plate is arranged on a hanging point tower angle steel on a power transmission tower, and the pre-twisted double-suspension wire clamp is connected with a wire. In the actual installation and operation process, the distance between the suspension clamp and the tower material of the iron tower in the suspension string hardware fitting is generally smaller.
Under the wind excitation effect, wires, hardware fittings and the like in the power transmission line can generate certain vibration response, such as low-frequency and large-amplitude swing of the wires. When wind excitation is continuously and stably applied to the transmission line element, different forms of vibration are generated and wind disasters are formed when the vibrations reach a certain level. Wind induced vibrations of a power transmission line can be roughly classified into three types according to the frequency and amplitude: high-frequency micro-amplitude breeze vibration, intermediate-frequency intermediate-amplitude subspan vibration and low-frequency large-amplitude dance. The three types of vibration can damage the power transmission line components, wherein breeze vibration is most frequent and the damage is the greatest, and fatigue strand breakage or wire breakage of a power transmission wire or a ground wire and damage of hardware fittings and tower components can be caused. The breeze vibration frequency is relatively high, typically 5-120Hz.
Therefore, under the wind excitation effect, the suspension string hardware fitting and the wires can swing to different degrees, so that the hanging plate and the suspension wire clamp in the suspension string hardware fitting are possibly contacted with the tower material of the iron tower, and the hanging plate, the suspension wire clamp and the tower material of the iron tower are worn, thereby threatening the safe and stable operation of the power transmission line. Particularly, with implementation of western electric east delivery strategy in China, more and more power transmission lines are routed in areas with large natural wind power and long duration such as inner mongolia, xinjiang, gansu and Ningxia, wind-driven vibration phenomena of wires and hanging strings of hardware fittings are more serious and frequent, abrasion problems of the hardware fittings strings and tower materials are more serious, and once the hardware fittings are worn, breakage and damage can cause huge economic loss and adverse social influence.
In order to solve the problems, although some improvements are made on the hanging string hardware structure and the tower material structure in engineering, the problems of abrasion and damage are not fundamentally researched and solved. Therefore, it is necessary to analyze the wear characteristics of the overhanging string hardware and study the control technology according to the wind load characteristics of the crossing region of the transmission line, improve the structure of the overhanging string hardware, develop a novel wear-resistant hardware, and reduce or eliminate the wear problem of the overhanging string hardware, thereby improving the running reliability of the line.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the wind-excited vibration abrasion simulation test platform for the suspension string hardware, which has a simple structure and is convenient to use, and can simulate low-frequency large-amplitude swing and high-frequency low-amplitude breeze vibration of a transmission wire in a transmission line, so that convenience is provided for research on wind-excited vibration abrasion characteristics of the suspension string hardware.
Therefore, the invention adopts the following technical scheme: the wind-excited vibration abrasion simulation test platform for the suspension string hardware comprises a base, wherein the base is provided with a swing end positioned at the left side, a fixed end positioned at the right side and the suspension string hardware positioned between the swing end and the fixed end;
the swing end is used for driving the transmission wire to swing, so that the vibration of the transmission wire under the action of wind excitation is simulated, and the fixed end is used for fixing the other end of the transmission wire;
the suspension serial hardware fitting comprises a trunnion hanging plate, a right-angle hanging plate, a yoke plate and a preformed double suspension wire clamp which are arranged from top to bottom, wherein the trunnion hanging plate is in shaft connection with the right-angle hanging plate, the right-angle hanging plate is in shaft connection with the yoke plate, the yoke plate is in shaft connection with the preformed double suspension wire clamp, and the preformed double suspension wire clamp is used for being clamped on a transmission wire;
a support frame is arranged between the swing end and the fixed end, and the left side surface and the right side surface of the upper part of the support frame are respectively provided with an XY axis motion excitation platform; the trunnion hanging plate is arranged in the support frame, two ends of a shaft positioned at the upper part of the trunnion hanging plate are respectively connected to XY-axis motion excitation platforms on the left side surface and the right side surface of the support frame, and the XY-axis motion excitation platform drives the suspension hardware fitting to move in the X-axis direction and the Y-axis direction;
the XY axis motion excitation platform is provided with a vibration measuring sensor which is used for detecting displacement vibration quantity output in the X axis direction and the Y axis direction; the vibration measuring sensors are connected with a measuring and controlling system of an XY axis motion excitation platform.
As the supplement of the technical proposal, the XY axis motion excitation platform comprises an XY axis motion excitation platform base plate fixed on the side surface of the supporting frame and an XY axis motion excitation platform workbench fixed on the XY axis motion excitation platform base plate;
the XY axis motion excitation platform workbench comprises a periphery, an inner ring and a middle block positioned between the periphery and the inner ring, and a gap exists between the periphery and the middle block so as to ensure that the middle block can do small displacement motion relative to the periphery; a gap exists between the middle block and the inner ring so as to ensure that the inner ring can do small displacement motion relative to the middle block; the periphery is fixed on the XY axis motion excitation platform base plate, and the end part of the axis at the upper part of the trunnion hanging plate is connected with the inner ring;
at least one X-axis piezoelectric driver is arranged between the periphery and the middle block and used for pushing the middle block to move in the X-axis direction and indirectly driving the inner ring to move in the X-axis direction; at least one Y-axis piezoelectric driver is arranged between the middle block and the inner ring and used for pushing the inner ring to move in the Y-axis direction.
As a supplement to the technical proposal, 4 flexible connecting pieces are arranged between the middle block and the inner ring and are respectively arranged at four corners; the middle block is provided with a groove for placing the Y-axis piezoelectric driver, and the groove is positioned between the two flexible connecting pieces.
As a supplement to the above technical scheme, there are 4 flexible connectors between the periphery and the middle block, which are arranged at four corners respectively; the periphery is provided with a groove for placing the X-axis piezoelectric driver, and the groove is positioned between the two flexible connecting pieces.
As a supplement to the above technical solution, the flexible connecting piece is a flexible hinge.
As the supplement of the technical proposal, the swinging end comprises a swinging end bottom plate, a servo motor, a swinging end parallel groove clamp assembly and a swinging end wire clamp fixing plate, wherein the swinging end parallel groove clamp assembly is used for being fixedly connected with one side of a transmission wire; an output shaft of the servo motor is provided with an elastic diaphragm coupler, a centering crank block mechanism is arranged between the elastic diaphragm coupler and the swinging end wire clamp fixing plate, and the action of the centering crank block mechanism is realized through the rotation of the servo motor.
As the supplement of the technical proposal, the centering crank slide block mechanism comprises a rotary disk, a connecting rod slide seat, a connecting rod, a square bearing with a seat, a flange slide block shaft, a swing end slide rail plate and a linear slide rail component;
the rotating disc is connected with the elastic diaphragm coupler at the end of the stepped shaft, milling grooves and a plurality of groups of threaded holes symmetrically distributed according to set distances are formed in the disc side of the rotating disc, the disc side is connected with one side of the connecting rod sliding seat through the milling grooves and one group of threaded holes by bolts, two sides of the connecting rod are respectively connected with the connecting rod sliding seat and the flange sliding block shaft through square bearings with seats, and the flange sliding block shaft is fixedly connected to the sliding rail plate at the swinging end through bolts; the swing end sliding rail plate is fixedly connected with the linear sliding rail assembly to form a sliding block in the centering crank sliding block mechanism;
the swing end bottom plate is provided with a thick supporting vertical plate, and a guide rail groove is formed in the upper portion of one side of the thick supporting vertical plate and is used for installing the linear sliding rail assembly.
As a supplement to the technical scheme, the swinging end further comprises a screw rod seat and a screw rod, and the screw rod seat is fixedly connected to the base through a bolt; the screw rod passes through the threaded hole on the screw rod seat, and one side of the screw rod is tightly propped against the thick vertical support plate.
The technical scheme is supplemented that the fixed end comprises a sensor supporting vertical plate, a force transducer, a sensor baffle, a spring baffle, a die spring, a spring floating plate, a fixed end wire clamp fixing plate, a fixed end parallel groove wire clamp assembly, a fixed end sliding rail plate, a fixed end linear sliding rail assembly, a fixed end bottom plate, a cylindrical guide rod, a linear bearing and a cylindrical guide rod fixing piece;
the fixed end bottom plate is fixedly connected to the base through a bolt, and a milling groove is formed in the fixed end bottom plate and used for installing the sensor supporting vertical plate and the fixed end linear sliding rail assembly;
the sensor support vertical plate is fixedly arranged on the base through bolt connection, a through hole is formed in the sensor support vertical plate and used for installing a force transducer through bolt connection, the other side of the force transducer is fixedly arranged on the sensor baffle plate through bolts, a cylindrical guide rod fixing piece is fixedly arranged on the sensor baffle plate, and the sensor baffle plate is fixedly connected with the spring baffle plate through bolts;
the two sides of the die spring are respectively fixed in the cylindrical sinking grooves on the spring baffle plate and the spring floating plate, and the spring floating plate is fixedly connected to the fixed end sliding rail plate through bolts;
one side of the cylindrical guide rod is fastened through the cylindrical guide rod fixing piece and penetrates through the through hole on the spring baffle plate, the inner hole of the die spring and the through hole on the spring floating plate, and the other side of the cylindrical guide rod is supported and installed on the spring floating plate through a linear bearing;
the fixed end sliding rail plate is provided with a counter bore and connected with the fixed end linear sliding rail assembly through bolt connection, and slides left and right relative to the fixed end bottom plate, and the fixed end sliding rail plate is also provided with a fixed end wire clamp fixing plate;
the fixed end parallel groove clamp assembly is fixedly arranged on the fixed end clamp fixing plate through bolt connection and used for fastening a power transmission wire.
As a supplement to the technical scheme, the base consists of a platform bottom plate and two cast iron platforms respectively positioned at two ends of the platform bottom plate, the swinging end and the fixed end are respectively arranged on the corresponding cast iron platforms, and the supporting frame is arranged on the platform bottom plate; the supporting frame is a supporting frame with adjustable height.
The invention has the following beneficial effects:
1. the device has compact structure, can realize the simulation of large-amplitude swing and breeze vibration of the power transmission wire, can realize the simulation of various vibration frequencies and amplitudes, and is convenient to use.
2. The XY axis motion excitation platform and the measurement and control system can ensure higher-precision displacement output and realize more accurate breeze vibration simulation;
3. the wear-resisting performance testing device has strong adaptability, and can be used for testing and evaluating wear-resisting performance of suspension string hardware fittings with different models and sizes by adjusting the height of the supporting frame.
Drawings
Fig. 1 is a schematic structural diagram of a single-wire double-wire suspension string hardware fitting according to an embodiment of the present invention (fig. 1b is a side view of fig. 1 a);
FIG. 2 is a schematic diagram of the overall structure of a suspension string hardware wind-excited vibration abrasion simulation test platform in an embodiment of the invention;
FIG. 3 is a front view of a simulated test platform for wind-excited vibratory wear of a suspension string hardware in an embodiment of the invention;
FIG. 4 is a left side view of a suspension string hardware wind-excited vibration wear simulation test platform taken along the A-A plane in an embodiment of the invention;
FIG. 5 is a partial cross-sectional view of a support frame for a suspension string hardware wind-excited vibration wear simulation test platform in accordance with an embodiment of the present invention;
FIG. 6 is a view of an XY axis motion excitation platform structure in an exemplary embodiment of the present invention (FIG. 6b is a left side view of FIG. 6a, and FIG. 6c is a rear side view of FIG. 6 a);
FIG. 7 is a schematic diagram of a specific structure of an XY axis motion excitation platform backing plate in an suspension string hardware wind excitation vibration wear simulation test platform in a specific embodiment of the invention;
FIG. 8 is a schematic diagram of a specific structure of an XY axis motion excitation platform workbench in an suspension string hardware wind excitation vibration wear simulation test platform in a specific embodiment of the invention;
FIG. 9 is a schematic diagram of the working principle of an XY axis motion excitation platform workbench measurement and control system in an suspension string hardware wind excitation vibration abrasion simulation test platform in a specific embodiment of the invention;
fig. 10 is a schematic structural view of a swing end according to an embodiment of the present invention.
In the figure, a platform bottom plate, a 2-screw rod, a 3-screw rod seat, a 4-cast iron platform, a 5-swinging end bottom plate, a 6-motor mounting plate, a 7-servo motor, an 8-elastic diaphragm coupler, a 9-supporting thick vertical plate, a 10-rotating disk, a 11-connecting rod sliding seat, a 12-connecting rod, a 13-linear sliding component, a 14-swinging end sliding rail plate, a 15-swinging end wire clamp fixing plate, a 16-swinging end parallel groove clamp component, a 17-transmission wire, a 18-supporting frame, a 19-XY axis motion excitation platform base plate, a 20-axis motion excitation platform workbench, a 21-suspension serial hardware fitting, a 22-fixed end parallel groove clamp component, a 23-fixed end clamp fixing plate, a 24-fixed end sliding rail plate, a 25-fixed end linear sliding rail component, a 26-fixed end bottom plate, a 27-spring baffle, a 28-cylindrical guide rod, a 29-spring floating plate, a 30-load cell, a 31-sensor supporting vertical plate, a 32-sensor baffle, a 33-die spring, a 34-linear bearing, a 35-cylindrical guide rod fixing piece, a 36-belt seat bearing, a 37-flange, a 202-suspension flange, a 203-peripheral sliding plate, a 203-fixed end parallel groove clamp, a Y-type electric wire clamp, a flexible intermediate plate, a 203-suspension clamp, a flexible wire clamp, a Y-shaped electric drive shaft, a flexible shaft, a 206-suspension clamp, a Y-type electric drive shaft, a flexible intermediate shaft, a pair of the front-suspension clamp, a 203-type, a Y-type electric drive shaft, a Y-type electric coupler, a flexible cable, a Y-type suspension, a Y-type electric coupler, a flexible drive shaft, a Y-type, a vertical shaft, and a front-type electric drive shaft 212.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 2, the suspension string hardware wind excitation vibration abrasion simulation test platform consists of a swinging end positioned at the left side of a base, a supporting frame positioned in the middle of the base and a fixed end positioned at the right side of the base, wherein the base consists of a platform bottom plate and two cast iron platforms respectively positioned at two ends of the platform bottom plate, the swinging end and the fixed end are respectively arranged on the platform bottom plate 1 through one cast iron platform 4, and the supporting frame is directly connected with the platform bottom plate 1. The fixed end is fixed on one side of the power transmission wire 17, the swing end drives one side of the power transmission wire 17 and the suspension string hardware fitting 21 to swing greatly at a certain frequency and amplitude, and certain high-frequency small-amplitude excitation is applied to the suspension string hardware fitting 21 through an XY axis motion excitation platform on the support frame, so that the large-amplitude swing of the overhead power transmission wire and the suspension string hardware fitting under the action of wind excitation and breeze vibration superimposed on the overhead power transmission wire and the suspension string hardware fitting are simulated.
As shown in fig. 2 and 3, the swinging end comprises a swinging end bottom plate 5, a servo motor 7, a swinging end parallel groove clamp assembly 16 used for being fixedly connected with one side of a transmission wire, a swinging end wire clamp fixing plate 15, a screw rod seat 3 and a screw rod 2; an output shaft of the servo motor 7 is provided with an elastic diaphragm coupler 8, a centering crank block mechanism is arranged between the elastic diaphragm coupler 8 and a swinging end wire clamp fixing plate 15, and the servo motor 7 drives the centering crank block mechanism to move through the elastic diaphragm coupler 8, so that swinging of the power transmission wire 17 in the X-axis direction is realized.
As shown in fig. 10, the centering crank slider mechanism comprises a rotary disk 10, a connecting rod sliding seat 11, a connecting rod 12, a square bearing 36 with a seat, a flange slider shaft 37, a swing end sliding rail plate 14 and a linear sliding rail assembly 13;
the rotating disc 10 is connected with the elastic diaphragm coupler 8 at the end of a stepped shaft, milling grooves and a plurality of groups of threaded holes symmetrically distributed according to set distances are formed in the disc side of the rotating disc 10, the disc side is connected with one side of the connecting rod sliding seat 11 through the milling grooves and one group of threaded holes by bolts, two sides of the connecting rod 12 are respectively connected with the connecting rod sliding seat 11 and the flange sliding block shaft 37 through square bearings 36 with seats, and the flange sliding block shaft 37 is fixedly connected to the swinging end sliding rail plate 14 through bolts; the swing end sliding rail plate 14 is fixedly connected with the linear sliding rail assembly 13 to form a 'sliding block' in the centering crank sliding block mechanism.
The swing end bottom plate 5 is provided with a thick supporting vertical plate 9, and a guide rail groove is formed at the upper part of one side of the thick supporting vertical plate 9 and is used for installing the linear sliding rail component 13. The waist slot formed on the swinging end bottom plate 5 enables the waist slot to change the position on the cast iron platform 4.
The screw rod adjusting mechanism consisting of a screw rod 2 and a screw rod seat 3 is arranged on the cast iron platform 4, and the wire rod seat 3 is fixedly connected to the base through a bolt; the screw rod 2 passes through a threaded hole on the screw rod seat 3, and one side of the screw rod is tightly propped against the thick vertical supporting plate 9. The tension of the transmission line 17 can be adjusted by adjusting the screw 2 to change the position of the swing end plate 5 and other components mounted thereon relative to the cast iron platform 4.
As shown in fig. 2, 3 and 4, the fixed end comprises a sensor supporting vertical plate 31, a force transducer 30, a sensor baffle 32, a spring baffle 27, a die spring 33, a spring floating plate 29, a fixed end wire clamp fixing plate 23, a fixed end parallel groove wire clamp assembly 22, a fixed end sliding rail plate 24, a fixed end linear sliding rail assembly 25, a fixed end bottom plate 26, a cylindrical guide rod 28, a linear bearing 34 and a cylindrical guide rod fixing piece 35;
the fixed end bottom plate 26 is fixedly connected to the base through bolts, and milling grooves are processed on the fixed end bottom plate 26 and are used for installing the sensor supporting vertical plate 31 and the fixed end linear sliding rail assembly 25;
the sensor support vertical plate 31 is fixed on the base through bolt connection, a through hole is drilled on the sensor support vertical plate 31 and used for installing the force transducer 30 through bolt connection, the other side of the force transducer 30 is fixed on the sensor baffle plate 32 through bolts, a cylindrical guide rod fixing piece 35 is also fixed on the sensor baffle plate 32, and the sensor baffle plate 32 is fixedly connected with the spring baffle plate 27 through bolts;
the two sides of the die spring 33 are respectively fixed in cylindrical sinking grooves on the spring baffle 27 and the spring floating plate 29, and the spring floating plate 29 is fixedly connected to the fixed end sliding rail plate 24 through bolts;
one side of the cylindrical guide rod 28 is fastened through a cylindrical guide rod fixing piece 35 and passes through a through hole on the spring baffle 27, an inner hole of a die spring 33 and a through hole on the spring floating plate 29, and the other side is supported and installed on the spring floating plate 29 through a linear bearing 34;
the fixed end sliding rail plate 24 is provided with a counter bore and is connected with the fixed end linear sliding rail assembly 25 through bolt connection, and slides left and right relative to the fixed end bottom plate 26, and the fixed end sliding rail plate 24 is also provided with a fixed end wire clamp fixing plate 23;
the fixed end parallel groove clamp assembly 22 is fixed on the fixed end clamp fixing plate 23 through bolt connection and is used for fastening the transmission wire 17.
The fixed end sliding rail plate 24 is connected with the fixed end bottom plate 26 through the fixed end linear sliding rail assembly 25, so that the fixed end sliding rail plate can move in the Z-axis direction, and the movement range of the fixed end sliding rail plate in the Z-axis direction is limited through the cylindrical guide rod 28, so that the transmission wire 17 and the fixed end are not completely rigidly connected.
As shown in fig. 2, 3 and 4, a supporting frame 18 is arranged between the swinging end and the fixed end, and an XY axis motion excitation platform is respectively arranged on the left side surface and the right side surface of the upper part of the supporting frame 18; the trunnion hanging plate 211 is arranged in the supporting frame 18, two ends of a shaft 215 positioned at the upper part of the trunnion hanging plate are respectively connected to XY axis motion excitation platforms on the left side surface and the right side surface of the supporting frame 18, and the XY axis motion excitation platform drives the suspension hardware fitting to move in the X axis direction and the Y axis direction.
The XY axis motion excitation platform is provided with a vibration measuring sensor which is used for detecting displacement vibration quantity output in the X axis direction and the Y axis direction; the vibration measuring sensor is connected with a measuring and controlling system of the XY axis motion excitation platform.
As shown in fig. 6-8, the XY-axis motion exciting stage comprises an XY-axis motion exciting stage base plate 19 fixed on the side of the supporting frame and an XY-axis motion exciting stage table 20 fixed on the XY-axis motion exciting stage base plate; the XY axis motion excitation platform workbench 20 comprises a periphery 202, an inner ring 203 and a middle block 204 positioned between the periphery 202 and the inner ring 203, a gap capable of enabling the middle block 204 to do small displacement motion relative to the periphery is arranged between the periphery 202 and the middle block 204, a gap capable of enabling the inner ring 203 to do small displacement motion relative to the middle block is arranged between the middle block 204 and the inner ring 203, flexible connecting pieces 205 are adopted between the periphery 202 and the middle block 204 and between the middle block 204 and the inner ring 203, the inner ring 203 is linked with the middle block 204, and the flexible connecting pieces 205 are flexible hinges. The flexible hinge can elastically deform to a certain extent under the action of force to generate displacement, which is equivalent to a guide rail with the function of displacement transmission, and has the advantages of no clearance, no friction, no lubrication and the like.
The outer periphery 202 is fixed on the XY axis motion excitation platform pad 19, and the end of the shaft 215 at the upper part of the trunnion hanging plate is connected with the inner ring 203.
At least one X-axis piezoelectric driver 206 is disposed between the periphery 202 and the middle block 204, and is configured to push the middle block 204 to move in the X-axis direction, and indirectly drive the inner ring 203 to move in the X-axis direction; at least one Y-axis piezoelectric driver 207 is disposed between the middle block 204 and the inner ring 203, for pushing the inner ring 203 to move in the Y-axis direction.
4 flexible connecting pieces 205 are arranged between the middle block 204 and the inner ring 203 and are respectively arranged at four corners; the middle block 204 is provided with a groove for placing the Y-axis piezoelectric actuator 207, and the groove is located between two flexible connectors.
The flexible connecting pieces 205 between the periphery 202 and the middle block 204 are 4 and are arranged at four corners respectively; the periphery 202 is provided with a groove for placing the X-axis piezoelectric actuator 206, which is located between the two flexible connectors.
As shown in fig. 1, the suspension link fitting 21 includes a trunnion hanging plate 211, a right angle hanging plate 212, a yoke plate 213 and a preformed double suspension clamp 214, which are arranged from top to bottom, the trunnion hanging plate 211 is axially connected with the right angle hanging plate 212, the right angle hanging plate 212 is axially connected with the yoke plate 213, the yoke plate 213 is axially connected with the preformed double suspension clamp 214, and the preformed double suspension clamp 214 is used for clamping on the power transmission wire 17.
As shown in fig. 5, the trunnion hanging plate 211 of the suspension link 21 is fixedly connected with the XY-axis motion excitation stage through a through hole. The preformed double suspension clamp 214 of the suspension string hardware fitting 21 is connected to the power transmission conductor 17.
The working process of the invention is as follows:
after the power transmission wire 17 is mounted on the fixed-end parallel groove clamp assembly 22, the power transmission wire 17 can only move in the axial direction.
The thick vertical supporting plate 9 is moved leftwards by the adjusting screw rod 2, so that the swing end base plate 5 and parts thereon move leftwards, and a certain pretightening force is generated in the power transmission wire 17. Under the action of the power transmission wire 17, the fixed end sliding rail plate 24 on the fixed end moves along the fixed end linear sliding rail assembly 25 and compresses the die spring 33 in the cylindrical guide rod 28, and the magnitude of the pretightening force in the current power transmission wire 17 can be known by using the load cell 30. And (3) adjusting the pretightening force of the current power transmission wire 17 until the pretightening force reaches the test requirement value, and screwing up bolts for connecting the swinging end bottom plate 5 and the cast iron platform 4.
The servo motor 7 is started to drive the elastic diaphragm coupler 8 and the rotary disk 10 to rotate, and a centering crank-slider mechanism consisting of the rotary disk 10, the connecting rod sliding seat 11, the connecting rod 12, the linear sliding rail component 13 and the swinging end sliding rail plate 14 moves along with the rotary disk. Thereby driving the transmission conductor 17 and the suspension string hardware fitting 21 to swing, namely simulating the low-frequency large-amplitude swing of the overhead transmission conductor and the suspension string hardware fitting under the wind excitation effect. The frequency and amplitude of the oscillation can be varied by adjusting the speed of the servomotor 7 and the position of the link slider 11 on the rotary disk 10. In addition, the output frequency obtained by adjusting the rotating speed of the servo motor 7 is generally 0-25Hz, and the output frequency is not too high in order to ensure the operation reliability and stability of the test platform, so that the swinging frequency of the lead generated by the swinging end of the test platform is generally 0-15Hz, and the frequency requirement for simulating the low-frequency large-amplitude swinging of the transmission lead is met.
In order to simulate the influence of high-frequency low-amplitude breeze vibration on the power transmission line element, the XY axis motion excitation platform is utilized to generate high-frequency low-amplitude vibration to act on the suspension string hardware fitting 21 and the power transmission wire 17. As shown in fig. 9, the XY axis motion excitation stage 20 is connected to a measurement and control system. When the system starts to work, the vibration measuring sensor detects the vibration quantity output by the workbench in the X-axis direction and the Y-axis direction, the vibration quantity is sampled through secondary instrument and A/D analog-to-digital conversion, the vibration quantity is compared with a set value required by a test on a computer through a corresponding control algorithm, and then an adjusting signal is transmitted to the piezoelectric drivers on the workbench of the XY-axis motion excitation platform through D/A conversion and a driving power supply, so that the four piezoelectric drivers respectively output actions to position the XY-axis motion excitation platform, and vibration with set frequency values and vibration amplitude values in the X, Y axis direction is obtained. The piezoelectric driver can generally generate excitation frequencies up to thousands of Hz, so that the XY axis motion excitation platform can generate excitation frequencies of 0 to thousands of Hz, and the frequency requirement for simulating breeze vibration of the transmission conductor is met.
By utilizing the simulation test platform, different frequencies and amplitudes can be obtained by adjusting the rotating speed of the servo motor 7 and the position of the connecting rod sliding seat 11 relative to the rotating disk 10, and the large-amplitude swing vibration simulation of the power transmission wire and the suspension wire fitting under the wind excitation action of the different frequencies and amplitudes is realized; through the feedback control adjustment of the XY axis motion excitation platform and the measurement and control system, the suspension string hardware fitting can vibrate at a certain frequency and amplitude in the X axis and Y axis directions, namely breeze vibration of the electric transmission line and the suspension string hardware fitting under the wind excitation effect is simulated.
In conclusion, the test platform can realize large-amplitude swing vibration and high-frequency low-amplitude breeze vibration of the power transmission wire and the suspension string hardware under the simulated wind excitation action of various excitation frequencies and amplitudes. By utilizing the platform, the vibration and abrasion characteristics of the transmission wire and the suspension string hardware fitting under different wind excitation actions can be studied so as to know the vibration characteristics and abrasion resistance of the suspension string hardware fitting, and the convenience is provided for the structural improvement of the suspension string hardware fitting; the method can also be used for sampling and testing the produced suspension string hardware fitting by manufacturers or purchasing units to evaluate whether the wear resistance of the suspension string hardware fitting meets the standard, thereby providing an effective means for the quality supervision and inspection work of the power grid hardware fitting and ensuring the safe operation of the power grid system.
Claims (4)
1. The wind-excited vibration abrasion simulation test platform for the suspension string hardware comprises a base, wherein the base is provided with a swing end positioned at the left side, a fixed end positioned at the right side and a suspension string hardware (21) positioned between the swing end and the fixed end; it is characterized in that the method comprises the steps of,
the swing end is used for driving the power transmission wire (17) to swing, so that the vibration of the power transmission wire (17) under the action of wind excitation is simulated, and the fixed end is used for fixing the other end of the power transmission wire (17);
the hanging string hardware fitting (21) comprises a trunnion hanging plate (211), a right-angle hanging plate (212), a yoke plate (213) and a pre-twisted double-hanging wire clamp (214) which are arranged from top to bottom, wherein the trunnion hanging plate (211) is in shaft connection with the right-angle hanging plate (212), the right-angle hanging plate (212) is in shaft connection with the yoke plate (213), the yoke plate (213) is in shaft connection with the pre-twisted double-hanging wire clamp (214), and the pre-twisted double-hanging wire clamp (214) is used for being clamped on a power transmission wire (17);
a supporting frame (18) is arranged between the swing end and the fixed end, and an XY axis motion excitation platform is respectively arranged on the left side surface and the right side surface of the upper part of the supporting frame (18); the trunnion hanging plate (211) is arranged in the supporting frame (18), two ends of a shaft (215) arranged at the upper part of the trunnion hanging plate are respectively connected to XY-axis motion excitation platforms on the left side surface and the right side surface of the supporting frame (18), and the XY-axis motion excitation platform drives the suspension hardware fitting to move in the X-axis direction and the Y-axis direction;
the XY axis motion excitation platform is provided with a vibration measuring sensor which is used for detecting displacement vibration quantity output in the X axis direction and the Y axis direction; the vibration measuring sensor is connected with a measuring and controlling system of an XY axis motion excitation platform;
the XY axis motion excitation platform comprises an XY axis motion excitation platform base plate (19) fixed on the side surface of the support frame and an XY axis motion excitation platform workbench (20) fixed on the XY axis motion excitation platform base plate;
the XY axis motion excitation platform workbench (20) comprises a periphery (202), an inner ring (203) and a middle block (204) arranged between the periphery (202) and the middle block (204), a gap capable of enabling the middle block (204) to move relative to the periphery is arranged between the periphery (202) and the middle block (204), a gap capable of enabling the inner ring (203) to move relative to the middle block is arranged between the middle block (204) and the inner ring (203), flexible connecting pieces (205) are adopted between the periphery (202) and the middle block (204) and between the middle block (204) and the inner ring (203), the inner ring (203) is linked with the middle block (204), the periphery (202) is fixed on the XY axis motion excitation platform base plate (19), and the end part of a shaft (215) at the upper part of the trunnion hanging plate is connected to the inner ring (203);
at least one X-axis piezoelectric driver (206) is arranged between the periphery (202) and the middle block (204) and is used for pushing the middle block (204) to move in the X-axis direction and indirectly driving the inner ring (203) to move in the X-axis direction; at least one Y-axis piezoelectric driver (207) is arranged between the middle block (204) and the inner ring (203) and is used for pushing the inner ring (203) to move in the Y-axis direction;
4 flexible connecting pieces (205) are arranged between the middle block (204) and the inner ring (203) and are respectively arranged at four corners; the middle block (204) is provided with a groove for placing the Y-axis piezoelectric driver (207), and the groove is positioned between the two flexible connecting pieces;
4 flexible connecting pieces (205) are arranged between the periphery (202) and the middle block (204) and are respectively arranged at four corners; the periphery (202) is provided with a groove for placing an X-axis piezoelectric driver (206), and the groove is positioned between two flexible connecting pieces;
the swinging end comprises a swinging end bottom plate (5), a servo motor (7), a swinging end parallel groove clamp assembly (16) and a swinging end wire clamp fixing plate (15) which are used for being fixedly connected with one side of a power transmission wire; an output shaft of the servo motor (7) is provided with an elastic diaphragm coupler (8), a centering crank block mechanism is arranged between the elastic diaphragm coupler (8) and a swinging end wire clamp fixing plate (15), and the action of the centering crank block mechanism is realized through the rotation of the servo motor (7);
the centering type crank sliding block mechanism comprises a rotary disc (10), a connecting rod sliding seat (11), a connecting rod (12), a square bearing with a seat (36), a flange sliding block shaft (37), a swinging end sliding rail plate (14) and a linear sliding rail assembly (13);
the rotating disc (10) is connected with the elastic membrane coupling (8) at the end of a stepped shaft, milling grooves and a plurality of groups of threaded holes symmetrically distributed according to set distances are formed in the disc side of the rotating disc (10), the disc side is connected with one side of the connecting rod sliding seat (11) through the milling grooves and one group of threaded holes by bolts, two sides of the connecting rod (12) are respectively connected with the connecting rod sliding seat (11) and the flange sliding block shaft (37) through square bearings (36) with seats, and the flange sliding block shaft (37) is fixedly connected to the swinging end sliding rail plate (14) through bolts; the swing end sliding rail plate (14) is fixedly connected with the linear sliding rail assembly (13) to form a sliding block in the centering crank sliding block mechanism;
the swing end bottom plate (5) is provided with a thick supporting vertical plate (9), and a guide rail groove is formed at the upper part of one side of the thick supporting vertical plate (9) and is used for installing the linear slide rail assembly (13);
the swinging end also comprises a screw rod seat (3) and a screw rod (2), and the screw rod seat (3) is fixedly connected to the base through a bolt; the screw rod (2) passes through a threaded hole on the screw rod seat (3), and one side of the screw rod is tightly propped against the thick vertical supporting plate (9).
2. The suspension string hardware wind-excited vibration wear simulation test platform according to claim 1, wherein the flexible connection piece (205) is a flexible hinge.
3. The suspension string hardware wind-excited vibration wear simulation test platform according to claim 1, wherein the fixed end comprises a sensor support vertical plate (31), a force transducer (30), a sensor baffle plate (32), a spring baffle plate (27), a die spring (33), a spring floating plate (29), a fixed end wire clamp fixing plate (23), a fixed end parallel groove wire clamp assembly (22), a fixed end sliding rail plate (24), a fixed end linear sliding rail assembly (25), a fixed end bottom plate (26), a cylindrical guide rod (28), a linear bearing (34) and a cylindrical guide rod fixing piece (35);
the fixed end bottom plate (26) is fixedly connected to the base through bolts, and milling grooves are formed in the fixed end bottom plate (26) and used for installing the sensor supporting vertical plate (31) and the fixed end linear sliding rail assembly (25);
the sensor support vertical plate (31) is fixed on the base through bolt connection, a through hole is drilled on the sensor support vertical plate (31) and used for installing the force transducer (30) through bolt connection, the other side of the force transducer (30) is fixed on the sensor baffle plate (32) through bolts, a cylindrical guide rod fixing piece (35) is further fixed on the sensor baffle plate (32), and the sensor baffle plate (32) is fixedly connected with the spring baffle plate (27) through bolts;
the two sides of the die spring (33) are respectively fixed in cylindrical sinking grooves on the spring baffle plate (27) and the spring floating plate (29), and the spring floating plate (29) is fixedly connected to the fixed end sliding rail plate (24) through bolts;
one side of the cylindrical guide rod (28) is fastened through a cylindrical guide rod fixing piece (35) and penetrates through a through hole in the spring baffle plate (27), an inner hole of the die spring (33) and a through hole in the spring floating plate (29), and the other side of the cylindrical guide rod is supported and installed on the spring floating plate (29) through a linear bearing (34);
the fixed end sliding rail plate (24) is provided with a counter bore and is connected with the fixed end linear sliding rail assembly (25) through bolt connection, and the fixed end sliding rail plate (24) is provided with a fixed end wire clamp fixing plate (23) in a sliding way relative to the fixed end bottom plate (26);
the fixed end parallel groove clamp assembly (22) is fixedly connected to the fixed end clamp fixing plate (23) through bolts and used for fastening the transmission wire (17).
4. The suspension serial hardware wind excitation vibration wear simulation test platform according to claim 1, wherein the base consists of a platform bottom plate (1) and two cast iron platforms (4) respectively positioned at two ends of the platform bottom plate, the swinging end and the fixed end are respectively arranged on the corresponding cast iron platforms, and the supporting frame is arranged on the platform bottom plate; the supporting frame is a supporting frame with adjustable height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327424.3A CN109406083B (en) | 2018-11-08 | 2018-11-08 | Suspension string hardware wind excitation vibration abrasion simulation test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327424.3A CN109406083B (en) | 2018-11-08 | 2018-11-08 | Suspension string hardware wind excitation vibration abrasion simulation test platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109406083A CN109406083A (en) | 2019-03-01 |
| CN109406083B true CN109406083B (en) | 2023-12-05 |
Family
ID=65472348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811327424.3A Active CN109406083B (en) | 2018-11-08 | 2018-11-08 | Suspension string hardware wind excitation vibration abrasion simulation test platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109406083B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235617B (en) * | 2022-02-24 | 2022-05-03 | 徐州拓发电力器材有限公司 | Electric power fitting wear resistance detection equipment and wear resistance detection method |
| CN114910243B (en) * | 2022-07-19 | 2022-10-04 | 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 |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05311355A (en) * | 1991-08-31 | 1993-11-22 | Nippon Piston Ring Co Ltd | Sintered alloy for sliding member excellent in scuffing resistance and wear resistance |
| JPH10153521A (en) * | 1996-11-21 | 1998-06-09 | Chinkaku Higashijima | Method and apparatus for measurement of unsteady air force |
| JP2003194666A (en) * | 2001-12-27 | 2003-07-09 | Akira Kanda | Vibration simulation method of body in fluid and device therefor |
| CN102306921A (en) * | 2011-09-19 | 2012-01-04 | 江西省电力科学研究院 | Break-proof method of insulator chain fracture caused by wind blowing |
| WO2012080817A2 (en) * | 2010-12-14 | 2012-06-21 | Universidad De Santiago De Chile | Real-time monitoring system to determine wearing in grate ribs in semi-autogeonous mills, to detect the conditions of jamming grates during the operation, and to detect working conditions under direct impact of the balls on the grates technical field of the invention |
| CN102564717A (en) * | 2012-01-13 | 2012-07-11 | 华北电力大学（保定） | Overhead conductor galloping testing device and testing method on basis of gear-end displacement excitation |
| CN102661839A (en) * | 2012-04-28 | 2012-09-12 | 三峡大学 | Overhead conductor micro vibration simulation experiment |
| CN103439208A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Test device for electric power fitting abrasion test machine |
| CN103439209A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Electric power fitting abrasion test machine |
| CN203502315U (en) * | 2013-08-21 | 2014-03-26 | 国家电网公司 | Electric power fitting abrasion testing machine |
| CN104359671A (en) * | 2014-12-10 | 2015-02-18 | 国家电网公司 | Testing device for ball eye flexural vibration fatigue characteristic in power transmission line |
| CN104913995A (en) * | 2015-05-18 | 2015-09-16 | 浙江华电器材检测研究所 | Power transmission line hardware wear test method |
| CN106353211A (en) * | 2016-08-12 | 2017-01-25 | 国网新疆电力公司电力科学研究院 | Wear tester for electric power fittings |
| CN106501075A (en) * | 2016-10-20 | 2017-03-15 | 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 |
| CN206074417U (en) * | 2016-10-20 | 2017-04-05 | 云南电网有限责任公司电力科学研究院 | A kind of ultrahigh voltage transmission lines hardware corrosive wear platform |
| CN106596015A (en) * | 2016-11-25 | 2017-04-26 | 广东电网有限责任公司东莞供电局 | Testing device and testing method for testing hardware vibration fatigue of power transmission line |
| CN106680122A (en) * | 2016-11-22 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Hardware wear test method and system |
| CN106786290A (en) * | 2016-12-28 | 2017-05-31 | 国网山东省电力公司烟台供电公司 | A kind of pendulous device for preventing ground wire to fall and break |
| CN106802182A (en) * | 2015-11-26 | 2017-06-06 | 中国电力科学研究院 | A kind of calibration method of transmission line of electricity aeolian vibration on-Line Monitor Device |
| CN106950138A (en) * | 2017-04-06 | 2017-07-14 | 国网浙江省电力公司舟山供电公司 | Optical fiber composite submarine cable wear test system and its method of work |
| CN108318202A (en) * | 2018-01-30 | 2018-07-24 | 国网浙江省电力有限公司电力科学研究院 | Damper wind excited vibration analogue test platform |
| CN207703430U (en) * | 2018-01-30 | 2018-08-07 | 国网浙江省电力有限公司电力科学研究院 | Damper wind excited vibration analogue test platform |
| 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 |
| CN209264232U (en) * | 2018-11-08 | 2019-08-16 | 国网新疆电力有限公司电力科学研究院 | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform |
-
2018
- 2018-11-08 CN CN201811327424.3A patent/CN109406083B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05311355A (en) * | 1991-08-31 | 1993-11-22 | Nippon Piston Ring Co Ltd | Sintered alloy for sliding member excellent in scuffing resistance and wear resistance |
| JPH10153521A (en) * | 1996-11-21 | 1998-06-09 | Chinkaku Higashijima | Method and apparatus for measurement of unsteady air force |
| JP2003194666A (en) * | 2001-12-27 | 2003-07-09 | Akira Kanda | Vibration simulation method of body in fluid and device therefor |
| WO2012080817A2 (en) * | 2010-12-14 | 2012-06-21 | Universidad De Santiago De Chile | Real-time monitoring system to determine wearing in grate ribs in semi-autogeonous mills, to detect the conditions of jamming grates during the operation, and to detect working conditions under direct impact of the balls on the grates technical field of the invention |
| CN102306921A (en) * | 2011-09-19 | 2012-01-04 | 江西省电力科学研究院 | Break-proof method of insulator chain fracture caused by wind blowing |
| CN102564717A (en) * | 2012-01-13 | 2012-07-11 | 华北电力大学（保定） | Overhead conductor galloping testing device and testing method on basis of gear-end displacement excitation |
| CN102661839A (en) * | 2012-04-28 | 2012-09-12 | 三峡大学 | Overhead conductor micro vibration simulation experiment |
| CN103439208A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Test device for electric power fitting abrasion test machine |
| CN103439209A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Electric power fitting abrasion test machine |
| CN203502315U (en) * | 2013-08-21 | 2014-03-26 | 国家电网公司 | Electric power fitting abrasion testing machine |
| CN104359671A (en) * | 2014-12-10 | 2015-02-18 | 国家电网公司 | Testing device for ball eye flexural vibration fatigue characteristic in power transmission line |
| CN104913995A (en) * | 2015-05-18 | 2015-09-16 | 浙江华电器材检测研究所 | Power transmission line hardware wear test method |
| CN106802182A (en) * | 2015-11-26 | 2017-06-06 | 中国电力科学研究院 | A kind of calibration method of transmission line of electricity aeolian vibration on-Line Monitor Device |
| CN106353211A (en) * | 2016-08-12 | 2017-01-25 | 国网新疆电力公司电力科学研究院 | Wear tester for electric power fittings |
| CN106501075A (en) * | 2016-10-20 | 2017-03-15 | 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 |
| CN206074417U (en) * | 2016-10-20 | 2017-04-05 | 云南电网有限责任公司电力科学研究院 | A kind of ultrahigh voltage transmission lines hardware corrosive wear platform |
| CN106680122A (en) * | 2016-11-22 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Hardware wear test method and system |
| CN106596015A (en) * | 2016-11-25 | 2017-04-26 | 广东电网有限责任公司东莞供电局 | Testing device and testing method for testing hardware vibration fatigue of power transmission line |
| CN106786290A (en) * | 2016-12-28 | 2017-05-31 | 国网山东省电力公司烟台供电公司 | A kind of pendulous device for preventing ground wire to fall and break |
| CN106950138A (en) * | 2017-04-06 | 2017-07-14 | 国网浙江省电力公司舟山供电公司 | Optical fiber composite submarine cable wear test system and its method of work |
| CN108318202A (en) * | 2018-01-30 | 2018-07-24 | 国网浙江省电力有限公司电力科学研究院 | Damper wind excited vibration analogue test platform |
| CN207703430U (en) * | 2018-01-30 | 2018-08-07 | 国网浙江省电力有限公司电力科学研究院 | Damper wind excited vibration analogue test platform |
| 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 |
| CN209264232U (en) * | 2018-11-08 | 2019-08-16 | 国网新疆电力有限公司电力科学研究院 | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform |
Non-Patent Citations (2)
| Title |
|---|
| 架空输电线路大跨越导线微风振动试验;汪峰;王宇;周蕊;陈池;;重庆大学学报(第01期);全文 * |
| 架空输电线路绝缘子串机械振动疲劳性能研究;张锐;吴光亚;袁田;张勤;姚涛;;电瓷避雷器(第01期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109406083A (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105891036B (en) | A kind of sliding compound friction abrasion test device of punching and its method | |
| CN109406083B (en) | Suspension string hardware wind excitation vibration abrasion simulation test platform | |
| CN103217287B (en) | Rolling support linear feeding system static and dynamic performance proving installation and method of testing | |
| CN108318202B (en) | Wind excitation vibration simulation test platform of damper | |
| CN202735181U (en) | Tangential and radial recombination fretting wear test device | |
| CN106895972A (en) | A kind of stick-slip experimental rig | |
| CN112284668A (en) | Device and method for testing bolt loosening caused by multi-axis vibration load | |
| CN106840932B (en) | Experiment table for measuring fretting wear of lead | |
| CN103454053A (en) | Vibration test simulator for levitation sensor of high-speed maglev train | |
| CN209485644U (en) | A kind of bolt group connection vibration reliability experimental provision | |
| CN110702549A (en) | Fretting wear test device based on ultrasonic technology | |
| CN209264232U (en) | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform | |
| CN207703430U (en) | Damper wind excited vibration analogue test platform | |
| CN110186700A (en) | A kind of high-speed EMUs pivoted arm node device for testing dynamic stiffness and test method | |
| KR100417527B1 (en) | Bench for static structure/fatigue tests of helicopter rotor blade and hub system | |
| CN112129478B (en) | Flexible riser dynamic response experimental device under simulated dynamic boundary condition | |
| CN204044263U (en) | Pantograph contact line relation testing table | |
| CN209961882U (en) | Special electric dynamometer of new energy automobile and control system | |
| CN204758273U (en) | Rubber vibration isolator dynamic and static performance testing arrangement | |
| CN109374249B (en) | Wire clamp test platform for simulating random curve swing of wire under wind excitation | |
| CN205642836U (en) | Rail vehicle axle box bearing comprehensive properties and axle head earthing device wear test platform | |
| CN109596297B (en) | Vertical vibration testing arrangement | |
| CN105115707A (en) | Testing device and testing method for dynamic characteristic of joint curved surface faying surface | |
| CN201926593U (en) | Rotary bending fatigue test machine for aviation conduit component | |
| CN217738652U (en) | Sliding bearing clearance fault simulation experiment device of reciprocating mechanism |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |