CN113933190B - Device and method for diagnosing fatigue fault degree of high-voltage circuit breaker spring - Google Patents
Device and method for diagnosing fatigue fault degree of high-voltage circuit breaker spring Download PDFInfo
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- CN113933190B CN113933190B CN202111184816.0A CN202111184816A CN113933190B CN 113933190 B CN113933190 B CN 113933190B CN 202111184816 A CN202111184816 A CN 202111184816A CN 113933190 B CN113933190 B CN 113933190B
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- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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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
- G01N3/02—Details
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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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
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Abstract
The invention discloses a device and a method for diagnosing the fatigue failure degree of a high-voltage breaker spring, comprising a bottom plate and a detection probe arranged on the bottom plate, wherein the upper end surface of the bottom plate is symmetrically provided with a left clamping mechanism and a right clamping mechanism, a clamping positioning assembly loosens a pressurizing assembly, the pressurizing direction of the pressurizing assembly is regulated, the pressurizing direction of the spring to be diagnosed is simulated when the device is used normally, then the clamping positioning assembly locks the pressurizing assembly, the pressurizing direction of the pressurizing assembly is constant, the spring to be diagnosed is pushed by the pressurizing assembly and is continuously compressed, the spring to be diagnosed is repeatedly extruded in a straight line or curve manner through reciprocating motion, the positions of the left clamping mechanism and the right clamping mechanism at two sides are regulated by a driving mechanism, the pressurizing direction of the pressurizing assembly on the right clamping mechanism deviates from one side of a fixed assembly, and meanwhile, the middle position of the spring to be diagnosed is jacked by a bending mechanism, so that the spring to be diagnosed is bent in an arc shape, and the fatigue life of the spring to be diagnosed is simulated under bending is detected.
Description
Technical Field
The invention belongs to the technical field related to spring fatigue diagnosis, and particularly relates to a device and a method for diagnosing the degree of fatigue failure of a high-voltage circuit breaker spring.
Background
The high-voltage breaker spring must pass through fatigue life verification test before delivery certification, and real-time detection is required to be carried out through a high-voltage breaker spring fatigue fault degree diagnosis device in the test process.
The existing high-voltage circuit breaker spring fatigue fault degree diagnosis device technology has the following problems: the traditional high-voltage circuit breaker spring fatigue fault degree diagnosis device has a single testing mode for the spring, is only a linear pressurizing test aiming at the spring fatigue test, and in the practical use process, the spring compression direction is not completely on a straight line, so that the spring can be bent when being pressed, and further, deviation is unavoidable when the traditional linear pressurizing test is adopted, and measurement data is not true and effective enough.
Disclosure of Invention
The invention aims to provide a device and a method for diagnosing the fatigue fault degree of a high-voltage circuit breaker spring, which are used for solving the problem that a single test result has larger deviation in the test mode proposed in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the device comprises a bottom plate and a detection probe arranged on the bottom plate, wherein a left clamping mechanism and a right clamping mechanism are symmetrically arranged on the upper end face of the bottom plate, a spring to be diagnosed is clamped and fixed through the left clamping mechanism and the right clamping mechanism, a fixing component for fixing one end of the spring to be diagnosed is arranged on the left clamping mechanism, and a pressurizing component for applying pressure to the other end of the spring to be diagnosed is arranged on the right clamping mechanism;
a bending mechanism is arranged between the left clamping mechanism and the right clamping mechanism, one side of the bending mechanism is provided with a driving mechanism, the left clamping mechanism and the right clamping mechanism on two sides are driven to open outwards by the driving mechanism, and meanwhile, the bending mechanism is matched to push the middle position of the spring to be diagnosed, so that the spring to be diagnosed is curved in an arc shape;
the right clamping mechanism is provided with a clamping positioning assembly for adjusting the pressurizing direction of the pressurizing assembly and locking the pressurizing assembly.
Preferably, the left clamping mechanism and the right clamping mechanism comprise L-shaped clamping rods, one end of each L-shaped clamping rod is fixedly connected with a shaft lever, one end of each shaft lever is rotationally connected with the bottom plate, and a gear is fixedly connected to the outer wall of each shaft lever.
Preferably, the fixed subassembly includes the baffle, L type clamping lever fixed connection on baffle and the left fixture, fixedly connected with wears the spring pole on the outer wall of baffle.
Preferably, the pressurizing assembly comprises an electric telescopic rod, a movable groove is formed in one end of the L-shaped clamping rod on the right clamping mechanism, the electric telescopic rod is movably arranged in the movable groove, the output end of the electric telescopic rod is fixedly connected with a pressurizing push plate, and a spring groove is formed in the outer wall of the pressurizing push plate.
Preferably, the movable groove comprises a spherical notch, and conical notches are formed in the outer walls of the L-shaped clamping rods on two sides of the spherical notch.
Preferably, the bending mechanism comprises a fixing rod, a sliding block is fixedly connected to the bottom end of the fixing rod, a second limiting sliding groove is formed in the bottom plate, the sliding block is in sliding connection with the second limiting sliding groove, a second spring is arranged in the second limiting sliding groove, one end of the second spring is fixedly connected with the sliding block, the other end of the second spring is fixedly connected with the inner wall of the second limiting sliding groove, and a sleeve is arranged at the outer fixing sleeve of the upper end of the fixing rod.
Preferably, the driving mechanism comprises a sliding seat, a first limiting sliding groove is further formed in the bottom plate, the sliding seat is in sliding connection with the first limiting sliding groove, a fixing plate is fixedly connected to the bottom plate above the first limiting sliding groove, a motor is fixedly mounted on the upper end face of the sliding seat, an output shaft of the motor is in threaded connection with the fixing plate, a double-sided rack is fixedly connected to one end of the output shaft of the motor, the double-sided rack is meshed with gears on two sides, and one end of the double-sided rack is fixedly connected with a semi-ring body matched with the shape of the fixing rod.
Preferably, the enclasping positioning assembly comprises an electromagnetic plate, an arc chute is formed in an L-shaped clamping rod above the spherical notch, the electromagnetic plate is arranged in the arc chute in a sliding manner, the upper surface of the electromagnetic plate is smooth, the lower surface of the electromagnetic plate is rough, a steering chute communicated with the spherical notch is formed in the bottom of the arc chute, an electromagnetic ring which is in sliding fit with the spherical notch is fixedly sleeved on the outer wall of the electric telescopic rod, telescopic slide rods are fixedly connected to the electric telescopic rods on two sides of the electromagnetic ring, one ends of the telescopic slide rods are fixedly connected with the electromagnetic plate, a first spring is sleeved outside the telescopic slide rods, one end of the first spring is fixedly connected with the electromagnetic plate, and the other end of the first spring is fixedly connected with the telescopic slide rods.
The method for diagnosing the fatigue fault degree of the high-voltage circuit breaker spring comprises the following steps of:
step one: the clamping angle is adjusted, and the positions of the left clamping mechanism and the right clamping mechanism at the two sides are adjusted through the driving mechanism, so that the pressurizing direction of the pressurizing assembly on the right clamping mechanism is opposite to the fixing assembly;
step two: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component;
step three: linearly pressurizing, wherein the pressurizing component pushes the spring to be diagnosed and continuously compresses the spring to be diagnosed, and repeatedly linearly extrudes the spring to be diagnosed through reciprocating motion;
step four: and detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under linear pressurization in real time through a detection probe.
The method for diagnosing the fatigue fault degree of the spring of the high-voltage circuit breaker comprises the following steps of:
step one: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component;
step two: the clamping angle is adjusted, and the positions of the left clamping mechanism and the right clamping mechanism on the two sides are adjusted through the driving mechanism, so that the pressurizing direction of the pressurizing assembly on the right clamping mechanism deviates from one side of the fixing assembly;
step three: under the synchronous drive of the driving mechanism, the bending mechanism is pushed to push the middle position of the spring to be diagnosed, so that the spring to be diagnosed is curved in an arc shape;
step four: loosening the pressurizing assembly through the enclasping positioning assembly, adjusting the pressurizing direction of the pressurizing assembly, simulating the pressing direction of the spring to be diagnosed in normal use, and locking the pressurizing assembly through the enclasping positioning assembly to ensure that the pressurizing direction of the pressurizing assembly is constant;
step five: the spring to be diagnosed is pushed by the pressurizing component and is continuously compressed, and the spring to be diagnosed is repeatedly and linearly extruded through reciprocating motion;
step six: and detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under curvilinear compression in real time through a detection probe.
Compared with the technology of the existing high-voltage circuit breaker spring fatigue fault degree diagnosis device, the invention provides the high-voltage circuit breaker spring fatigue fault degree diagnosis device and method, and has the following beneficial effects:
1. the pressurizing assembly is loosened through the enclasping positioning assembly, the pressurizing direction of the pressurizing assembly is adjusted, the pressing direction of the spring to be diagnosed is simulated when the spring to be diagnosed is normally used, then the pressurizing assembly is locked through the enclasping positioning assembly, the pressurizing direction of the pressurizing assembly is constant, the spring to be diagnosed is pushed by the pressurizing assembly and is continuously compressed, and the spring to be diagnosed is repeatedly extruded in a straight line or a curve through reciprocating motion;
2. according to the invention, the positions of the left clamping mechanism and the right clamping mechanism on two sides are adjusted through the driving mechanism, so that the pressurizing direction of the pressurizing assembly on the right clamping mechanism deviates from one side of the fixing assembly, and the bending mechanism is pushed to push the middle position of the spring to be diagnosed under the synchronous driving of the driving mechanism, so that the spring to be diagnosed is curved, and the fatigue life detection of the spring under the bending is simulated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the invention and do not constitute a limitation to the invention, and in which:
FIG. 1 is a schematic diagram of a first state structure of a device for diagnosing the degree of fatigue failure of a high-voltage breaker spring;
FIG. 2 is a schematic diagram showing a second state structure of a device for diagnosing the fatigue failure degree of a high-voltage breaker spring according to the present invention;
FIG. 3 is a schematic diagram illustrating a cross-sectional structure of FIG. 1A according to the present invention;
FIG. 4 is a schematic view of a partial enlarged structure at B in FIG. 2 according to the present invention;
FIG. 5 is a schematic view of a partial enlarged structure of the portion C in FIG. 3 according to the present invention;
in the figure: 1. a bottom plate; 2. a left clamping mechanism; 3. a right clamping mechanism; 4. a driving mechanism; 5. a bending mechanism; 6. a detection probe; 21. an L-shaped clamping rod; 22. a spring rod is penetrated; 23. a baffle; 24. a shaft lever; 25. a gear; 26. a conical notch; 27. a spherical notch; 31. a pressurizing assembly; 32. tightly holding the positioning assembly; 311. an electric telescopic rod; 312. an electromagnetic ring; 313. a pressurized push plate; 314. a spring groove; 321. a telescopic slide bar; 322. a first spring; 323. a steering chute; 324. an electromagnetic plate; 325. an arc chute; 41. a motor; 42. a slide; 43. the first limiting chute; 44. a fixing plate; 45. double-sided racks; 46. a half-ring body; 51. a second spring; 52. a sleeve; 53. a fixed rod; 54. and the second limiting chute.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a high-voltage circuit breaker spring fatigue fault degree diagnostic device, including bottom plate 1 and install the test probe 6 on bottom plate 1, the up end symmetry of bottom plate 1 is provided with left fixture 2 and right fixture 3, through left fixture 2 and the fixed spring of waiting to diagnose of right fixture 3 centre gripping, be provided with the fixed subassembly that is used for fixed waiting to diagnose spring one end on the left fixture 2, fixed subassembly includes baffle 23, baffle 23 and the L type clamping lever 21 fixed connection on the left fixture 2, fixedly connected with wears spring rod 22 on the outer wall of baffle 23, can make waiting to diagnose spring one end and wear spring rod 22 and support on baffle 23, thereby wait to diagnose the spring and carry out initial fixation.
It should be noted that the right clamping mechanism 3 is provided with a pressurizing assembly 31 for applying pressure to the other end of the spring to be diagnosed, the pressurizing assembly 31 comprises an electric telescopic rod 311, one end of the L-shaped clamping rod 21 on the right clamping mechanism 3 is provided with a movable groove, the electric telescopic rod 311 is movably arranged in the movable groove, the movable groove comprises a spherical notch 27, the outer walls of the L-shaped clamping rods 21 on two sides of the spherical notch 27 are provided with conical notches 26, the output end of the electric telescopic rod 311 is fixedly connected with a pressurizing push plate 313, the outer wall of the pressurizing push plate 313 is provided with a spring groove 314, and the other end of the spring to be diagnosed is placed in the spring groove 314 for limiting, so that the fixing operation of the spring to be diagnosed is completed.
It is worth knowing that a bending mechanism 5 is arranged between the left clamping mechanism 2 and the right clamping mechanism 3, the bending mechanism 5 comprises a fixed rod 53, the bottom end of the fixed rod 53 is fixedly connected with a sliding block, a second limiting sliding groove 54 is formed in the bottom plate 1, the sliding block is in sliding connection with the second limiting sliding groove 54, a second spring 51 is arranged in the second limiting sliding groove 54, one end of the second spring 51 is fixedly connected with the sliding block, the other end of the second spring 51 is fixedly connected with the inner wall of the second limiting sliding groove 54, a sleeve 52 is fixedly sleeved outside the upper end of the fixed rod 53, the sleeve 52 is in a concave wheel shape, when the fixed rod 53 is subjected to pushing force, the second spring 51 can be compressed by sliding along the pushing force direction, meanwhile, the sleeve 52 pushes the middle position of the spring to be diagnosed forwards, the two ends of the spring to be diagnosed are bent, and the middle part of the spring is bent forwards.
It should be noted that, one side of the bending mechanism 5 is provided with the driving mechanism 4, the driving mechanism 4 includes the slide 42, still offer first spacing spout 43 on the bottom plate 1, slide 42 and first spacing spout 43 sliding connection, fixedly connected with fixed plate 44 on the bottom plate 1 of first spacing spout 43 top, slide 42 up end fixed mounting has motor 41, the output shaft and the fixed plate 44 threaded connection of motor 41, the output shaft one end fixedly connected with double-sided rack 45 of motor 41, double-sided rack 45 meshes with the gear 25 of both sides, the semi-ring body 46 of double-sided rack 45's one end fixedly connected with and dead lever 53 shape looks adaptation, drive its output shaft through motor 41 during operation and rotate, through the threaded relation of output shaft and fixed plate 44, simultaneously under slide 42 and first spacing spout 43's slip spacing, make output shaft drive motor 41 and double-sided rack 45 synchronous forward motion, left side clamping mechanism 2 and right clamping mechanism 3 all include L type clamping lever 21, the one end fixedly connected with axostylus axostyle 24 of L type clamping lever 21, one end and bottom plate 1 rotation connection of axostylus axostyle, fixedly connected with gear 25 on the outer wall of double-sided rack 45 and double-sided rack 45, make double-sided rack 45 and double-sided rack 45 move forward by the effect of double-sided rack 45 to the fixed ring body 53, make double-sided rack 45 move forward by the both sides of the fixed carrier 53, the double-sided rack 45 moves towards the fixed carrier 45 simultaneously.
It is worth noting that the driving mechanism 4 drives the left clamping mechanism 2 and the right clamping mechanism 3 on two sides to open outwards, and the bending mechanism 5 is matched to push the middle position of the spring to be diagnosed, so that the spring to be diagnosed is bent in an arc shape.
Further, the right clamping mechanism 3 is provided with a holding positioning component 32 for adjusting the pressurizing direction of the pressurizing component 31 and locking the pressurizing component 31, the holding positioning component 32 comprises an electromagnetic plate 324, an arc-shaped chute 325 is formed in the L-shaped clamping rod 21 above the spherical notch 27, the electromagnetic plate 324 is slidably arranged in the arc-shaped chute 325, the upper surface of the electromagnetic plate 324 is smooth and the lower surface is rough, the bottom of the arc-shaped chute 325 is provided with a steering chute 323 communicated with the spherical notch 27, an electromagnetic ring 312 in sliding fit with the spherical notch 27 is fixedly sleeved on the outer wall of the electric telescopic rod 311, telescopic sliding rods 321 are fixedly connected to the electric telescopic rods 311 on two sides of the electromagnetic ring 312, one ends of the two telescopic sliding rods 321 are fixedly connected with the electromagnetic plate 324, a first spring 322 is sleeved outside the telescopic sliding rods 321, one end of the first spring 322 is fixedly connected with the electromagnetic plate 324, the other end of the first spring 322 is fixedly connected with the telescopic sliding rods 321, the magnetic force of the electromagnetic plate 324 is zero under the power-off state, the magnetic force of the first spring 322 does not contact the bottom wall 325 with the chute, and the electromagnetic plate 324 can be adsorbed on the magnetic plate 324 under the action of the elasticity of the first spring 322, and the magnetic force can be freely adsorbed on the bottom wall 325 after the electric telescopic rods 311 are tightly contacted with the arc-shaped chute 311, and the magnetic plate is tightly fixed to the arc-shaped chute 324.
A method for diagnosing the fatigue fault degree of a spring of a high-voltage circuit breaker,
the method comprises the following steps of:
step one: the clamping angle is adjusted, and the positions of the left clamping mechanism 2 and the right clamping mechanism 3 at the two sides are adjusted through the driving mechanism 4, so that the pressurizing direction of the pressurizing assembly 31 on the right clamping mechanism 3 is opposite to the fixed assembly;
step two: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component 31;
step three: the linear pressurization is carried out, the pressurizing assembly 31 pushes the spring to be diagnosed and continuously compresses the spring to be diagnosed, and the spring to be diagnosed is repeatedly and linearly extruded through reciprocating motion;
step four: and (3) detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under linear pressurization in real time through the detection probe 6.
A method for diagnosing the fatigue fault degree of a spring of a high-voltage circuit breaker,
the method comprises the following steps of:
step one: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component 31;
step two: the clamping angle is adjusted, the positions of the left clamping mechanism 2 and the right clamping mechanism 3 on the two sides are adjusted through the driving mechanism 4, and the pressurizing direction of the pressurizing assembly 31 on the right clamping mechanism 3 deviates from one side of the fixed assembly;
step three: under the synchronous drive of the driving mechanism 4, the bending mechanism 5 is pushed to push the middle position of the spring to be diagnosed, so that the spring to be diagnosed is curved;
step four: the pressurizing assembly 31 is loosened through the enclasping positioning assembly 32, the pressurizing direction of the pressurizing assembly 31 is adjusted, the pressing direction of the spring to be diagnosed is simulated in normal use, and then the pressurizing assembly 31 is locked through the enclasping positioning assembly 32, so that the pressurizing direction of the pressurizing assembly 31 is constant;
step five: curvilinear pressurization, the spring to be diagnosed is pushed by the pressurization component 31 and is continuously compressed, and the spring to be diagnosed is repeatedly and linearly extruded through reciprocating motion;
step six: and detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under curvilinear compression in real time through the detection probe 6.
The working principle and the using flow of the invention are as follows: when the device is used for linear compression fatigue damage detection, the device is in a first state shown in fig. 1, after the left clamping mechanism 2 and the right clamping mechanism 3 are fixed left and right, the compression direction of the compression component 31 on the right clamping mechanism 3 is opposite to the fixed component, then the spring to be diagnosed is fixed, one end of the spring to be diagnosed passes through the spring penetrating rod 22 and abuts against the baffle plate 23, so that the spring to be diagnosed is initially fixed, the other end of the spring to be diagnosed is placed in the spring groove 314 for limiting, and the fixing operation of the spring to be diagnosed is completed;
starting an electric telescopic rod 311, pushing the spring to be diagnosed by the electric telescopic rod 311 and continuously compressing, repeatedly linearly extruding the spring to be diagnosed through reciprocating motion, and monitoring the surface fatigue damage degree of the spring to be diagnosed under linear compression in real time through a detection probe 6;
when the device is used for detecting curvilinear compression fatigue damage, the device is in a second state shown in fig. 2, the springs to be diagnosed are installed and fixed according to the method, then the positions of the left clamping mechanism 2 and the right clamping mechanism 3 are adjusted, the left clamping mechanism is driven to rotate by the motor 41, the output shaft is driven to rotate by the threaded relation of the output shaft and the fixed plate 44, simultaneously under the sliding limit of the sliding seat 42 and the first limiting sliding groove 43, the output shaft drives the motor 41 and the double-sided rack 45 to synchronously move forwards, due to the meshing effect of the double-sided rack 45 and the two-sided gears 25, the two L-shaped clamping rods 21 are opened to two sides, the pressurizing direction of the pressurizing assembly 31 on the right clamping mechanism 3 deviates from one side of the fixed assembly, the double-sided rack 45 pushes the half ring body 46 to move towards the fixed rod 53, the fixed rod 53 is pushed forwards by the half ring body 46, the second spring 51 can be compressed by sliding along the pushing direction when the fixed rod 53 is pushed forwards by the pushing force, meanwhile, the two ends of the springs to be diagnosed are bent backwards by the sleeve 52, the middle part of the springs to be bent forwards, the two ends of the springs to be diagnosed are bent, the motor 41 is closed after the middle part is bent forwards to a certain angle, and the springs to be kept in bent postures;
then, the pressurizing direction of the pressurizing assembly 31 is adjusted, the electromagnetic ring 312 is in a power-off state in the initial state, so that the magnetic force of the electromagnetic ring 312 and the magnetic plate 324 is zero, the magnetic plate 324 is not in contact with the bottom wall of the arc-shaped sliding groove 325 under the action of the elastic force of the first spring 322, the angle of the electric telescopic rod 311 can be freely adjusted, the thrust direction of the electric telescopic rod 311 is enabled to be in the detection requirement direction, then the electromagnetic ring 312 is electrified, the electromagnetic plate 324 is enabled to move downwards and be tightly attached to the bottom wall of the arc-shaped sliding groove 325 under the action of the magnetic force of the electromagnetic ring 312 and the magnetic plate 324, and the angle of the electric telescopic rod 311 is positioned, so that the pressurizing assembly 31 is locked, and the pressurizing direction of the pressurizing assembly 31 is enabled to be constant;
then the electric telescopic rod 311 pushes the spring to be diagnosed and continuously compresses, the spring to be diagnosed is repeatedly linearly extruded through reciprocating motion, and the surface fatigue damage degree of the spring to be diagnosed under curvilinear compression is monitored in real time through the detection probe 6.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high voltage circuit breaker spring fatigue fault degree diagnostic device, includes bottom plate (1) and installs test probe (6) on bottom plate (1), its characterized in that: the device comprises a bottom plate (1), wherein the upper end face of the bottom plate (1) is symmetrically provided with a left clamping mechanism (2) and a right clamping mechanism (3), a spring to be diagnosed is clamped and fixed through the left clamping mechanism (2) and the right clamping mechanism (3), a fixing component for fixing one end of the spring to be diagnosed is arranged on the left clamping mechanism (2), and a pressurizing component (31) for applying pressure to the other end of the spring to be diagnosed is arranged on the right clamping mechanism (3);
a bending mechanism (5) is arranged between the left clamping mechanism (2) and the right clamping mechanism (3), one side of the bending mechanism (5) is provided with a driving mechanism (4), the left clamping mechanism (2) and the right clamping mechanism (3) at two sides are driven to be outwards opened by the driving mechanism (4), and meanwhile, the bending mechanism (5) is matched to push the middle position of the spring to be diagnosed, so that the spring to be diagnosed is bent in an arc shape;
the right clamping mechanism (3) is provided with a holding positioning assembly (32) for adjusting the pressurizing direction of the pressurizing assembly (31) and locking the pressurizing assembly (31);
the left clamping mechanism (2) and the right clamping mechanism (3) comprise L-shaped clamping rods (21), one end of each L-shaped clamping rod (21) is fixedly connected with a shaft rod (24), one end of each shaft rod (24) is rotationally connected with the bottom plate (1), and a gear (25) is fixedly connected to the outer wall of each shaft rod (24);
the pressurizing assembly (31) comprises an electric telescopic rod (311), a movable groove is formed in one end of an L-shaped clamping rod (21) on the right clamping mechanism (3), the electric telescopic rod (311) is movably arranged in the movable groove, the output end of the electric telescopic rod (311) is fixedly connected with a pressurizing push plate (313), and a spring groove (314) is formed in the outer wall of the pressurizing push plate (313);
the movable groove comprises a spherical notch (27), and conical notches (26) are formed in the outer walls of the L-shaped clamping rods (21) on the two sides of the spherical notch (27);
the utility model provides a hug tightly locating component (32) including electromagnetic plate (324), arc spout (325) have been seted up to L type clamping lever (21) inside of spherical notch (27) top, electromagnetic plate (324) slip sets up in arc spout (325), the upper surface of electromagnetic plate (324) is smooth and the lower surface is coarse, the bottom of arc spout (325) be equipped with spherical notch (27) communicating turn to spout (323), fixed cover is equipped with on the outer wall of electric telescopic handle (311) with spherical notch (27) sliding fit's electromagnetic ring (312), fixedly connected with flexible slide bar (321) on electric telescopic handle (311) of electromagnetic ring (312) both sides, two the one end of flexible slide bar (321) all is with electromagnetic plate (324) fixed connection, the outside cover of flexible slide bar (321) is equipped with first spring (322), the one end and electromagnetic plate (324) fixed connection of first spring (322), the other end and flexible slide bar (321) fixed connection of first spring (322).
2. The high voltage circuit breaker spring fatigue fault level diagnostic device of claim 1, wherein: the fixing assembly comprises a baffle plate (23), the baffle plate (23) is fixedly connected with an L-shaped clamping rod (21) on the left clamping mechanism (2), and a spring penetrating rod (22) is fixedly connected to the outer wall of the baffle plate (23).
3. The high voltage circuit breaker spring fatigue fault level diagnostic device of claim 1, wherein: the bending mechanism (5) comprises a fixing rod (53), a sliding block is fixedly connected to the bottom end of the fixing rod (53), a second limiting sliding groove (54) is formed in the bottom plate (1), the sliding block is slidably connected with the second limiting sliding groove (54), a second spring (51) is arranged in the second limiting sliding groove (54), one end of the second spring (51) is fixedly connected with the sliding block, the other end of the second spring (51) is fixedly connected with the inner wall of the second limiting sliding groove (54), and a sleeve (52) is fixedly sleeved at the outer portion of the upper end of the fixing rod (53).
4. A high voltage circuit breaker spring fatigue failure degree diagnostic device according to claim 3, wherein: the driving mechanism (4) comprises a sliding seat (42), a first limiting sliding groove (43) is further formed in the bottom plate (1), the sliding seat (42) is in sliding connection with the first limiting sliding groove (43), a fixing plate (44) is fixedly connected onto the bottom plate (1) above the first limiting sliding groove (43), a motor (41) is fixedly mounted on the upper end face of the sliding seat (42), an output shaft of the motor (41) is in threaded connection with the fixing plate (44), a double-sided rack (45) is fixedly connected to one end of the output shaft of the motor (41), the double-sided rack (45) is meshed with gears (25) on two sides, and a half ring body (46) matched with the shape of the fixing rod (53) is fixedly connected to one end of the double-sided rack (45).
5. A method for diagnosing the degree of fatigue failure of a spring of a high-voltage circuit breaker, using the device for diagnosing the degree of fatigue failure of a spring of a high-voltage circuit breaker according to claim 1, characterized by comprising the steps of:
step one: the clamping angle is adjusted, the positions of the left clamping mechanism (2) and the right clamping mechanism (3) at two sides are adjusted through the driving mechanism (4), and the pressurizing direction of the pressurizing component (31) on the right clamping mechanism (3) is opposite to the fixed component;
step two: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component (31);
step three: the linear pressurization is carried out, the pressurizing assembly (31) pushes the spring to be diagnosed and continuously compresses the spring to be diagnosed, and the spring to be diagnosed is repeatedly and linearly extruded through reciprocating motion;
step four: and detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under linear pressurization in real time through a detection probe (6).
6. A method for diagnosing the degree of fatigue failure of a spring of a high-voltage circuit breaker, using the device for diagnosing the degree of fatigue failure of a spring of a high-voltage circuit breaker according to claim 1, characterized by comprising the steps of:
step one: fixing the spring to be diagnosed, wherein one end of the spring to be diagnosed is fixed on the fixing component, and the other end of the spring to be diagnosed is propped against the pressurizing component (31);
step two: the clamping angle is adjusted, the positions of the left clamping mechanism (2) and the right clamping mechanism (3) on two sides are adjusted through the driving mechanism (4), and the pressurizing direction of the pressurizing assembly (31) on the right clamping mechanism (3) deviates from one side of the fixing assembly;
step three: under the synchronous drive of the driving mechanism (4), the bending mechanism (5) is pushed to push against the middle position of the spring to be diagnosed, so that the spring to be diagnosed is curved in an arc shape;
step four: loosening the pressurizing assembly (31) through the enclasping positioning assembly (32), adjusting the pressurizing direction of the pressurizing assembly (31), simulating the pressing direction of the spring to be diagnosed in normal use, and locking the pressurizing assembly (31) through the enclasping positioning assembly (32), so that the pressurizing direction of the pressurizing assembly (31) is constant;
step five: the spring to be diagnosed is pushed by the pressurizing component (31) and continuously compressed, and the spring to be diagnosed is repeatedly and linearly extruded through reciprocating motion;
step six: and detecting fatigue damage, namely monitoring the surface fatigue damage degree of the spring to be diagnosed under curvilinear compression in real time through a detection probe (6).
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| CN117007264B (en) * | 2023-10-07 | 2023-12-12 | 江苏威伦智能电气设备有限公司 | Fatigue testing device for pole-mounted circuit breaker |
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