CN106680083B - A test device for strain insulator composite insulator tramples tiredly - Google Patents
A test device for strain insulator composite insulator tramples tiredly Download PDFInfo
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- CN106680083B CN106680083B CN201611219237.4A CN201611219237A CN106680083B CN 106680083 B CN106680083 B CN 106680083B CN 201611219237 A CN201611219237 A CN 201611219237A CN 106680083 B CN106680083 B CN 106680083B
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- 239000002131 composite material Substances 0.000 title claims abstract description 125
- 239000012212 insulator Substances 0.000 title claims abstract description 124
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 239000012211 strain insulator Substances 0.000 title claims description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000006073 displacement reaction Methods 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000004088 simulation Methods 0.000 claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims 5
- 230000035882 stress Effects 0.000 abstract description 26
- 230000032683 aging Effects 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
Abstract
The invention provides a testing device for treading fatigue of a strain composite insulator. The device includes: the device comprises a treading system, a treading force acquisition device, a displacement acquisition device, a strain detection device, a supporting mechanism and a control system; the supporting mechanism is used for bearing and tensioning the composite insulator to be tested; the treading system is arranged above the supporting mechanism and is used for applying treading force to the composite insulator to be tested; the treading force acquisition device is used for detecting treading force applied by the treading system; the displacement acquisition device is used for detecting the displacement of the treading system after the treading force is applied; the strain detection device is used for detecting the stress born by the composite insulator under the action of the treading force and the strain generated by the composite insulator; the control system is used for receiving the treading force, the displacement, the stress and the strain and determining the variation relation of the stress and the strain along with the treading force and the displacement. The testing device improves the efficiency of the trampling simulation test of the composite insulator and provides data support for the evaluation of the fatigue aging characteristic of the composite insulator.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a test device for treading fatigue of a strain composite insulator.
Background
The composite insulator is a special insulating control, generally comprises a glass fiber epoxy resin core rod, a silicon rubber umbrella skirt and a hardware fitting, and can play an important role in an overhead transmission line.
The application of the tension string composite insulator in 110kV and 220kV transmission lines in China is quite common, the longest service life is close to 20 years, and the tension string composite insulator also has trial experience in extra-high voltage alternating current and direct current engineering. For an operation department, since the insulator is damaged by trampling the tension string composite insulator during the outgoing operation of an operator, and the line is inevitably failed, the trampling of the tension string composite insulator is forbidden by the current live working regulations, which brings great inconvenience to the outgoing operation of the operator. In order to solve the trample problem existing in the operation of the tension composite insulator, a trample test device needs to be designed, so that the operation performance of the tension composite insulator is effectively evaluated, and the safe operation of a power transmission line is ensured.
In the prior art, the trampling simulation test of the tension composite insulator is generally simulated in a manual trampling mode, the manual trampling simulation test is time-consuming, labor-consuming and low in efficiency, and the result and the actual deviation of evaluating the fatigue aging characteristics of the folding core rod and the umbrella skirt of the composite insulator are large.
Disclosure of Invention
In view of the above, the invention provides a testing device for treading fatigue of a strain composite insulator, and aims to solve the problems that the existing composite insulator treading test simulation device is low in efficiency and inaccurate in result of evaluating the fatigue aging characteristic of the composite insulator.
In one aspect, the present invention provides a testing apparatus for tread fatigue of a strain composite insulator, the apparatus comprising: the device comprises a treading system, a treading force acquisition device, a displacement acquisition device, a strain detection device, a supporting mechanism and a control system; the supporting mechanism is used for bearing and tensioning the composite insulator to be tested; the treading system is arranged above the supporting mechanism and is used for applying treading force to the composite insulator to be tested; the treading force acquisition device is connected with the treading system and used for detecting the treading force applied by the treading system; the displacement acquisition device is connected with the treading system and is used for detecting the displacement of the treading system after treading force is applied; the strain detection device is connected with the composite insulator to be detected and is used for detecting the stress borne by the composite insulator to be detected under the action of the treading force and the strain generated by the composite insulator to be detected; the control system is electrically connected with the treading force acquisition device, the displacement acquisition device and the strain detection device and is used for receiving the treading force, the displacement, the stress and the strain and determining the change relation of the stress and the strain along with the treading force and the displacement.
Further, in the above test apparatus for fatigue of trampling of strain insulator composite, the trampling system includes: the device comprises a support frame, a driving mechanism and a human foot simulation device; the driving mechanism is connected with the supporting frame; the driving mechanism is connected with the human foot simulation device and is used for driving the human foot simulation device to apply treading force to the composite insulator to be tested; the control system is connected with the driving mechanism and used for controlling the driving mechanism to drive the human foot simulation device to apply treading force to the composite insulator to be tested.
Further, in the testing device for the treading fatigue of the tension composite insulator, the human foot simulation device is a prosthetic limb.
Further, in the above-mentioned a test device for strain composite insulator tramples fatigue, people's foot analogue means with actuating mechanism can dismantle the connection.
Further, in the above-mentioned testing arrangement that is used for strain insulator composite insulator to trample fatigue, the support frame includes: the device comprises two upright posts and a cross beam connected between the two upright posts; wherein the driving mechanism is connected with the cross beam.
Furthermore, in the test device for the treading fatigue of the tension composite insulator, the driving mechanism is an electric servo cylinder.
Further, in the above test apparatus for fatigue is trampled to strain insulator composite, trample the system and set up in to be examined composite center department directly over.
Further, in the above-mentioned testing apparatus for strain insulator composite insulator trample fatigue, the supporting mechanism includes: the clamping device comprises a base, a first clamping body, a second clamping body, a first fastening piece and a second fastening piece; the first clamping body and the second clamping body are slidably connected to the base, and two ends of the composite insulator to be tested are respectively clamped with the first clamping body and the second clamping body; the first clamping body is fastened to a first preset position of the base through the first fastening piece; the second clamping body is fastened to a second preset position of the base through the second fastening piece.
Furthermore, in the testing device for the treading fatigue of the strain composite insulator, a plurality of first connecting holes are formed in the base along the sliding direction; the bottom of the first clamping body is provided with a second connecting hole, and the second connecting hole is connected with any one of the first connecting holes through the first fastener; and a third connecting hole is formed in the bottom of the second clamping body and is connected with any one of the first connecting holes through the second fastener.
Furthermore, in the test device for the treading fatigue of the tension composite insulator, a plurality of strain detection devices are provided; and each strain detection device is respectively connected with each part to be detected of the composite insulator to be detected and is used for detecting the stress and the strain of each part to be detected of the composite insulator to be detected.
According to the testing device provided by the invention, the treading force acquisition device and the displacement acquisition device are controlled by the control system to adjust the treading force and the displacement after the treading force is applied by the treading system, and the stress and the strain of the composite insulator to be tested are detected by the strain detection device, so that the change relation of the stress and the strain of the composite insulator to be tested along with the treading force and the displacement can be obtained, the efficiency of the treading simulation test of the composite insulator to be tested is improved, and data support is provided for the evaluation of the fatigue aging characteristic of the composite insulator to be tested.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a front view of a testing apparatus for tread fatigue of a strain composite insulator according to an embodiment of the present invention;
fig. 2 is a side view of a testing apparatus for tread fatigue of a strain composite insulator according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a preferred structure of a testing apparatus for treading fatigue of a tension composite insulator according to an embodiment of the present invention is shown. As shown, the test device comprises: a stepping system 1, a stepping force acquisition device (not shown in the figure), a displacement acquisition device (not shown in the figure), a strain detection device (not shown in the figure), a support mechanism 2, and a control system (not shown in the figure).
The supporting mechanism 2 is used for bearing and tensioning the composite insulator 3 to be tested. Specifically, the composite insulator 3 to be tested is an insulating control comprising a core rod and an umbrella skirt, two ends of the core rod of the composite insulator 3 to be tested are respectively connected to the supporting mechanism 2, and the supporting mechanism 2 can tension the composite insulator 3 to be tested through the clamping device.
The treading system 1 is arranged above the supporting mechanism 2 and is used for applying treading force to the composite insulator 3 to be tested. Specifically, the stepping system 1 may be disposed above the supporting mechanism 2 at a predetermined angle, for example, the stepping system 1 may be disposed vertically above the supporting mechanism 2 and applies a stepping force, which may be not less than 750N, to the composite insulator 3 to be tested connected to the supporting mechanism 2.
The treading force acquisition device is connected with the treading system 1 and used for detecting the treading force applied by the treading system 1 to the composite insulator 3 to be detected. Specifically, the treading force acquisition device may be a mechanical sensor that can detect a treading force of not less than ± 750N, and the indication error of the mechanical sensor may be not more than ± 1%.
The displacement acquisition device is connected with the treading system 1 and is used for detecting the displacement of the treading system 1 after treading force is applied to the composite insulator 3 to be detected. Specifically, the displacement of the trampling system 1 after the trampling force is applied to the composite insulator 3 to be tested, that is, the displacement of the trampling system 1 moving to the composite insulator 3 to be tested after the trampling system 1 starts to apply the trampling force to the composite insulator 3 to be tested, may be determined according to an actual situation, for example, the displacement of the trampling system 1 after the trampling force is applied to the composite insulator 3 to be tested may be not less than 50 mm; the displacement acquisition device can be a displacement sensor which can detect the displacement of not less than +/-50 mm, and the indication error of the displacement sensor is not more than +/-1%.
The strain detection device is connected with the composite insulator 3 to be detected and is used for detecting the stress borne by the composite insulator 3 to be detected under the action of the treading force and the strain generated by the composite insulator to be detected. Specifically, the strain detection device may be a strain gauge connected to the composite insulator 3 to be detected, so as to detect the stress borne by the composite insulator 3 to be detected under the pedal force and the strain generated thereby. Preferably, there may be a plurality of strain detection devices, and each strain detection device is connected to each part to be detected of the composite insulator 3 to be detected, and is configured to detect stress and strain of each part to be detected of the composite insulator 3 to be detected. In specific implementation, a plurality of points to be tested can be arranged at different positions of the core rod and the umbrella skirt of the composite insulator 3 to be tested, and correspondingly, a plurality of strain gauges are respectively connected to the points to be tested so as to respectively detect the stress and the strain of the points to be tested.
The control system is electrically connected with the treading force acquisition device, the displacement acquisition device and the strain detection device and is used for receiving treading force, displacement, stress and strain and determining the change relation of the stress and the strain along with the treading force and the displacement. Specifically, the control system may include: hardware data acquisition card and human-computer interface software. The data acquisition card is electrically connected with the treading force acquisition device, the displacement acquisition device and the strain detection device and is used for acquiring treading force, displacement, stress and strain. The software part can analyze the change relation of stress and strain along with the treading force and the displacement according to the data acquired by the hardware data acquisition card. In specific implementation, the treading force and the displacement of the treading force after the treading force acts on the composite insulator 3 to be tested can change along with time, so that the change relation between the stress borne by the composite insulator 3 to be tested and the change relation between the generated strain and the time can be further obtained.
In this embodiment, the design requirement of the control system may be: the commercial PC bus computer is used as a hardware platform, the design of the hardware system is matched with a software system, the system has the functions of sensor signal amplification, data acquisition, data display, curve drawing, data processing and the like, and the complex test functions of various stresses, displacement control and the like required by the test device are integrated. The software system is developed based on a Win7 platform, a built-in signal generator of the software can adjust mechanical output waveforms, undisturbed switching between any control mode and test waveforms can be performed, a plurality of test steps can be set at one time, and various complex combined waveform tests can be completed.
During testing, different treading forces are applied to the composite insulator 3 to be tested through the treading system 1 in different time periods, the displacement of the treading system after the corresponding treading force is applied is set, the stress borne by each part to be tested of the composite insulator 3 to be tested under different treading forces and the set displacement and the generated strain are detected through the strain detection device, the change relation of the stress and the strain of the composite insulator 3 to be tested along with the treading force and the displacement is determined, and the change relation of the stress borne by the composite insulator 3 to be tested and the generated strain along with time is analyzed.
In this embodiment, the treading force acquisition device and the displacement acquisition device are controlled by the control system to adjust the treading force and the displacement after the treading force is applied by the treading system 1, and the stress borne by the composite insulator 3 to be tested and the strain generated by the composite insulator to be tested are detected by the strain detection device, so that the change relationship between the stress borne by the composite insulator 3 to be tested and the strain generated along with the treading force and the displacement can be obtained, the treading simulation test efficiency of the composite insulator 3 to be tested is improved, data support is provided for the fatigue aging characteristic evaluation of the composite insulator 3 to be tested, and the problems that the efficiency of the existing composite insulator treading test simulation device is low and the fatigue aging characteristic of the composite insulator is inaccurate in evaluation result are solved.
Referring to fig. 2, in the above embodiment, the tread system 1 may include: a support frame 11, a driving mechanism 12 and a human foot simulator 13. Wherein the driving mechanism 12 is connected with the supporting frame 11. Specifically, the support frame 11 may include: two upright posts 111 and a cross beam 112 connected between the two upright posts 111. Wherein the drive mechanism 12 is connected to the cross beam 112. Two upright posts 111 may be disposed opposite to each other with a predetermined distance between two upright posts 111, for example, the distance between two upright posts 111 is not less than 300 mm. In specific implementation, the bottoms of the two upright posts 111 can be fixed on the ground through the supporting mechanism 2, and two ends of the cross beam 113 can be detachably connected with the two upright posts 111 respectively.
The driving mechanism 12 may be any driving device known to those skilled in the art, and the embodiment is not limited thereto. In specific implementation, the driving mechanism 12 and the supporting frame 11 can be detachably connected. The driving mechanism 12 is connected with the human foot simulator 13 and is used for driving the human foot simulator 13 to apply treading force to the composite insulator 3 to be tested. In particular, the human foot simulator 13 may be a prosthesis, which may be removably coupled to the drive mechanism 12. In particular, the drive mechanism 12 may transmit the pedaling force to the prosthesis via the coupling 4.
The control system is connected with the driving mechanism 12 and is used for controlling the driving mechanism 12 to drive the human foot simulation device 13 to apply treading force to the composite insulator 3 to be tested. Specifically, the control system may control the driving mechanism 12 to adjust the magnitude of the pedaling force and control the driving mechanism 12 to stop applying the pedaling force to the composite insulator 3 to be tested.
It can be seen that the driving mechanism 12 drives the artificial limb to apply the treading force to the composite insulator 3 to be tested, so that the treading simulation test on the composite insulator 3 to be tested is closer to the actual environment, the test result is more accurate, meanwhile, the artificial limb of different specifications can be replaced by the test device, and the applicability is stronger.
In the above embodiment, the driving mechanism 12 may preferably be an electric servo cylinder. Specifically, the electric servo cylinder may include: servo motor and ball.
In specific implementation, the servo motor 121 may be disposed through the cross beam 112 and disposed above the cross beam 112, a first end (an upper end shown in fig. 2) of the ball screw 122 may be disposed through the cross beam 112 and disposed below the cross beam 112, a second end (a lower end shown in fig. 2) of the ball screw 122 is connected to one end of the connecting member 4, and the other end of the connecting member 4 is connected to the prosthesis.
During operation, the ball screw 122 converts the rotary motion of the servo motor 121 into linear motion, drives the connecting member 4 to transmit the treading force to the artificial limb, and finally applies the treading force to the composite insulator 3 to be tested by the artificial limb.
It can be seen that the servo motor 121 can perform displacement control, such as constant rate displacement, constant displacement; force control, e.g., constant rate force, constant force; deformation control, such as constant rate deformation, constant deformation, may also be performed. The treading force and the displacement of the composite insulator 3 to be tested after the treading force is applied can be accurately controlled, so that the controllability of the test is improved, and the test result is more accurate; meanwhile, the servo motor 121 has the characteristics of no need of a hydraulic source, no need of cooling equipment, energy conservation and the like.
In the above embodiment, the stepping system 1 may be disposed right above the center of the composite insulator 3 to be tested. Specifically, the driving mechanism 12 in the treading system 1 may be disposed right opposite to the central portion of the composite insulator 3 to be tested, so as to vertically apply the treading force to the central portion of the composite insulator 3 to be tested.
It can be seen that, when the trampling system 1 applies the trampling force to the center of the composite insulator 3 to be tested, the stress borne by the composite insulator 3 to be tested and the strain generated by the composite insulator to be tested are the largest, and by detecting whether the stress and the strain of each part to be tested of the composite insulator 3 to be tested under the action of the trampling force are within the normal working range of the composite insulator 3 to be tested, a mechanical basis is provided for an operator whether to trample the composite insulator 3 to be tested in practice.
In the above embodiment, the support mechanism 2 may include: a base 21, a first clamping body 22, a second clamping body 23, a first fastener 24 and a second fastener 25.
The first clamping body 22 and the second clamping body 23 can be slidably connected to the base 21, and two ends of the composite insulator 3 to be tested can be respectively clamped with the first clamping body 22 and the second clamping body 23. Specifically, the first clamping body 22 and the second clamping body 23 are provided with connecting portions for fixing the clamps, and bolts or the like fasten the clamps to the first clamping body 22 and the second clamping body 23 through the connecting portions, and clamp the composite insulator 3 to be tested by the clamps. It is also possible to provide rollers, such as rubber wheels, at the bottom of the first clamping body 22 and the second clamping body 23, and a rail for rolling the rubber wheels may be provided on the base 21 along the sliding direction of the first clamping body 22 and the second clamping body 23. In addition, support legs, a damper, anchor bolts, or the like may be installed between the base 21 and the ground.
The first clamping body 22 may be fastened to the base 21 at a first predetermined position by a first fastening member 24, and the second clamping body 23 may be fastened to the base 21 at a second predetermined position by a second fastening member 25. Specifically, the first fastener 24 and the second fastener 25 may be bolts, pins, etc., and the embodiment is not limited thereto. A plurality of first connection holes (not shown) may be formed in the base 21 along the sliding direction, a second connection hole (not shown) may be formed in the bottom of the first clamping body 22, and the second connection hole may be connected to any one of the first connection holes through the first fastening member 24. The bottom of the second clamping body 23 may be opened with a third connection hole (not shown in the figure), and the third connection hole may be connected to any one of the first connection holes through the second fastening member 25. In specific implementation, when the first clamping body 22 slides to a first predetermined position on the base 21, the first fastening member 24 may be disposed through the second connection hole and the first connection hole at the first predetermined position, so as to fasten the first clamping body 22 at the first predetermined position on the base 21. When the second clamping body 23 slides to the second preset position on the base 21, the second fastening member 25 can be inserted through the third connecting hole and the first connecting hole at the second preset position to fasten the second clamping body 23 at the second preset position on the base 21.
It should be noted that, in specific implementation, the first preset position and the second preset position may be determined according to the size of the composite insulator 3 to be tested, and this embodiment does not limit the size.
It can be seen that the positions of the first clamping body 22 and the second clamping body 23 can be adjusted according to the length of the composite insulator 3 to be measured and the position of the point to be measured on the composite insulator 3 to be measured, and the operation is simple and convenient.
In conclusion, the testing device for the trample fatigue of the tension composite insulator in the embodiment improves the efficiency of the trample simulation test of the composite insulator 3 to be tested, and provides data support for the evaluation work of the fatigue aging characteristic of the composite insulator 3 to be tested.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a test device that is used for strain insulator composite insulator to trample tired which characterized in that includes: the device comprises a treading system (1), a treading force acquisition device, a displacement acquisition device, a strain detection device, a supporting mechanism (2) and a control system; wherein the content of the first and second substances,
the supporting mechanism (2) is used for bearing and tensioning the composite insulator (3) to be tested;
the trampling system (1) is arranged above the supporting mechanism (2) and is used for applying the composite insulator (3) to be tested
Treading force;
the treading force acquisition device is connected with the treading system (1) and is used for detecting the treading force applied by the treading system (1)
Pedaling force;
the pedaling system (1) comprises: a support frame (11), a driving mechanism (12) and a human foot simulation device (13); wherein the content of the first and second substances,
the driving mechanism (12) is connected with the support frame (11);
the driving mechanism (12) is connected with the human foot simulation device (13) and is used for driving the human foot simulation device (13)
Applying a treading force to the composite insulator (3) to be tested;
the control system is connected with the driving mechanism (12) and is used for controlling the driving mechanism (12) to drive the human foot
The simulation device (13) applies treading force to the composite insulator (3) to be tested;
the displacement acquisition device is connected with the treading system (1) and is used for detecting that the treading system (1) is treading
Displacement after the force;
the strain detection device is connected with the composite insulator (3) to be detected and used for detecting the composite insulator to be detected
(3) Stress and strain produced under the action of the treading force;
the control system is electrically connected with the treading force acquisition device, the displacement acquisition device and the strain detection device
And the device is used for receiving the treading force, the displacement, the stress and the strain and determining the variation relation of the stress and the strain along with the treading force and the displacement.
2. The apparatus for testing treading fatigue of strain composite insulator according to claim 1, wherein the apparatus is characterized in that
The human foot simulator (13) is a prosthesis.
3. The apparatus for testing treading fatigue of strain composite insulator according to claim 2, wherein the apparatus is characterized in that
The human foot simulation device (13) is detachably connected with the driving mechanism (12).
4. The apparatus for testing treading fatigue of strain composite insulator according to claim 3, wherein the apparatus is characterized in that
The support frame (11) comprises: the device comprises two upright columns (111) and a cross beam (112) connected between the two upright columns (111); wherein the content of the first and second substances,
the driving mechanism (12) is connected with the cross beam (112).
5. The apparatus for testing treading fatigue of strain composite insulator according to claim 4, wherein the apparatus is characterized in that
The driving mechanism (12) is an electric servo cylinder.
6. The testing device for the trampling fatigue of the tension resistant composite insulator according to any one of claims 1 to 5, wherein the trampling system (1) is arranged right above the center of the composite insulator (3) to be tested.
7. The apparatus for testing treading fatigue of strain composite insulator according to any one of claims 1 to 5, characterized in that
Characterized in that said support means (2) comprise: base (21), first clamping body (22), second clamping body (23), first fastener
(24) And a second fastener (25); wherein the content of the first and second substances,
the first clamping body (22) and the second clamping body (23) are both slidably connected to the base (21), the object to be clamped
Two ends of the composite insulator (3) are respectively clamped with the first clamping body (22) and the second clamping body (23);
the first clamping body (22) is fastened to a first preset position of the base (21) through the first fastening piece (24);
the second clamping body (23) is fastened to a second preset position of the base (21) by the second fastening member (25).
8. The apparatus for testing treading fatigue of a tension resistant composite insulator according to claim 7,
a plurality of first connecting holes are formed in the base (21) along the sliding direction;
a second connecting hole is formed at the bottom of the first clamping body (22), and the second connecting hole passes through the first fastener
(24) Is connected with any one of the first connecting holes;
a third connecting hole is formed in the bottom of the second clamping body (23), and the third connecting hole passes through the second fastener
(25) Is connected with any one of the first connecting holes.
9. The testing device for the tread fatigue of the strain composite insulator according to any one of claims 1 to 5, which
Characterized in that the strain detection device is provided with a plurality of strain detection devices; wherein the content of the first and second substances,
each strain detection device is respectively connected with each part to be detected of the composite insulator (3) to be detected and used for detecting
The stress and the strain of each part to be tested of the composite insulator (3) to be tested.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611219237.4A CN106680083B (en) | 2016-12-26 | 2016-12-26 | A test device for strain insulator composite insulator tramples tiredly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219237.4A CN106680083B (en) | 2016-12-26 | 2016-12-26 | A test device for strain insulator composite insulator tramples tiredly |
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| CN106680083B true CN106680083B (en) | 2021-03-02 |
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| CN109050973A (en) * | 2018-09-12 | 2018-12-21 | 西安飞机工业（集团）有限责任公司 | A kind of ladder tramples test method and testing stand |
| CN109307627B (en) * | 2018-10-25 | 2022-12-09 | 中国电力科学研究院有限公司 | Bending test device |
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