CN118050262A - Tensile strength detection device for electric nonmetal grounding body - Google Patents
Tensile strength detection device for electric nonmetal grounding body Download PDFInfo
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- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000013519 translation Methods 0.000 claims abstract description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 4
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- 229910003460 diamond Inorganic materials 0.000 claims 2
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- 238000000034 method Methods 0.000 description 7
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- 229910002804 graphite Inorganic materials 0.000 description 4
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- 229910000975 Carbon steel Inorganic materials 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
- 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
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N2203/0003—Steady
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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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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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
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0452—Cushioning layer between test piece and grip
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of grounding material mechanics detection, in particular to a tensile strength detection device of an electric nonmetal grounding body, which comprises: the device comprises a workbench, a first sliding rail, two second sliding rails, a connecting rod driving assembly, a locking unit and a monitoring unit; the locking unit comprises locking devices used for fixing two ends of a detection piece and adjusting mechanisms arranged on each second sliding rail, each locking device comprises a base fixedly arranged on a connecting rod driving assembly, a limiting sleeve fixedly arranged on the base and a plurality of pressing plates arranged along the axis of the limiting sleeve, each adjusting mechanism is used for enabling the pressing plates to gradually clamp the detection piece when the detection piece detects, each pressing plate is connected with the corresponding adjusting mechanism in a transmission mode, each monitoring unit comprises a crack sensor and a translation output end capable of moving along the length direction of the detection piece, the crack sensors are arranged on the translation output ends of the monitoring units, the two ends of the detection piece can be continuously clamped when the detection device stretches, and deformation of the detection piece after stretching is prevented from being separated from the clamp.
Description
Technical Field
The invention relates to the technical field of mechanical detection, in particular to a tensile strength detection device for an electric nonmetal grounding body.
Background
The transformer substation grounding grid is a basic overvoltage protection device of high-voltage primary equipment. The potential of the high-voltage end of the primary equipment of the electric power is ensured to be limited within a safety range, and the smaller grounding resistance is an important guarantee for avoiding the occurrence of the impact discharge breakdown fault of the high-voltage end of the primary equipment. The traditional transformer substation grounding grid generally adopts galvanized flat steel or copper-clad steel, when a plating material is damaged or corroded, a carbon steel material of an inner core can be continuously corroded, the grounding body is corroded to reduce the section of the grounding body and even break, the grounding performance of the grounding grid is poor, the thermal stability cannot meet the requirement, a short-circuit current can burn out the grounding grid, a high potential difference occurs in the transformer substation, damage accidents of other main equipment are caused, and personal safety can be endangered. Therefore, in recent years, the transformer substation grounding net starts to adopt electric nonmetallic grounding bodies, such as graphite composite grounding cable bodies, "graphite-copper wire" composite braided stranded wires, "graphite-carbon fiber" composite braided grounding bodies and the like, and the electric nonmetallic grounding bodies play a good role in corrosion prevention in the operation of the transformer substation grounding net.
Compared with the traditional metal grounding material, the transformer substation adopts the electric nonmetal grounding body and has the following advantages: good corrosion resistance, conductivity and mechanical strength, and long service life; the contact effective area with soil is large, the moisture absorption and retention capacity is strong, the current can be better dispersed under the power frequency and lightning stroke high-frequency impact, and the grounding resistance is stable; the high-requirement power grounding device is suitable for high-requirement power grounding of various terrains, is widely applied to the fields of transformer substations, power transmission and transformation lines, power equipment ground grids, high-rise buildings, lightning protection and the like, and is convenient to install. The high-voltage power supply has the functions of reducing resistance, preventing electric field interference and leakage and the like, and can be widely applied to the fields of power, electronics, communication, aviation and the like.
Because the electric nonmetal grounding body is mainly formed by braiding graphite wires, carbon fiber wires, glass fibers and the like, but is not integrally cast or cast, the braided electric nonmetal grounding body comprises: the grounding construction flows of dragging, pulling, bending and the like require the detection of the tensile property of the electric nonmetallic grounding body, and the tensile property of the electric nonmetallic grounding body is limited in the related electric industry standard, so that the electric nonmetallic grounding body is a type which is required to be detected when the substation grounding grid is used for selecting the electric nonmetallic grounding material.
Traditional tensile detection only carries out once to the line body (be the detecting member in this paper) both ends and fixes, because in tensile detection, the line body can take place to deform by tensile line body, and then line body both ends diameter can diminish relatively, if the line body takes place not hard up this moment, will influence the detection effect, still can cause the problem that treats that the line body breaks away from anchor clamps, therefore how can press from both sides tight fixed the line body after deformation when detecting is the problem that needs to solve urgently.
Disclosure of Invention
In order to solve the problems in the prior art, the invention adopts the following technical scheme: an electrical nonmetallic grounding body tensile strength detection device, comprising: the device comprises a workbench, a first sliding rail, two second sliding rails, a connecting rod driving assembly, a locking unit and a monitoring unit; the first sliding rail is fixedly arranged on the workbench, the two second sliding rails are symmetrically fixedly arranged on two sides of the first sliding rail, the connecting rod driving assembly is arranged on the first sliding rail and each second sliding rail in a sliding manner, the locking unit is arranged on the first sliding rail, and the monitoring unit is arranged on the workbench; the locking unit comprises locking devices used for fixing two ends of a detection piece and adjusting mechanisms arranged on each second sliding rail, the locking devices comprise bases fixedly arranged on the connecting rod driving assembly, limiting sleeves fixedly arranged on the bases and a plurality of pressing plates arranged along the axes of the limiting sleeves, the adjusting mechanisms are used for enabling the pressing plates to gradually clamp the detection piece when the detection piece detects, each pressing plate is connected with the corresponding adjusting mechanism in a transmission mode, the monitoring unit comprises a crack sensor and a translation output end capable of moving along the length direction of the detection piece, and the crack sensor is arranged on the translation output end of the monitoring unit.
Further, the connecting rod driving assembly comprises a limiting seat, a bidirectional screw rod, a rotary driver, two first moving parts, two second moving parts and four connecting rods; the two-way screw rod is hinged and connected with the intersection point of the diamond-shaped frame, and the two-way screw rod is connected with the two first moving pieces.
Further, each locker further comprises a propping sleeve and an elastic limiting pipe, the outer pipe wall of the propping sleeve is connected with the inner pipe wall of the limiting sleeve, the elastic limiting pipe is fixedly connected with the limiting sleeve, a plurality of elastic sheets are annularly arranged on the elastic limiting pipe along the axis of the elastic limiting pipe, a propping inclined plane is formed on the inner pipe wall of the propping sleeve, and each pressing plate is elastically connected with a corresponding elastic sheet.
Further, each elastic sheet is elastically connected with a propping strip plate, the propping strip plates are connected with the elastic sheet through tension springs, each propping strip plate is elastically connected with a pressing plate, the pressing plates are connected with the propping strip plates through pressure springs, the rigidity coefficient of the tension springs is larger than that of the pressure springs, and the adjusting mechanism is connected with the propping strip plates in a transmission mode.
Further, the two ends of each propping strip plate are fixedly provided with a propping block, and the propping blocks are used for providing hard propping force for the pressing plate after the compression of the pressure spring is limited.
Further, each pressing plate is fixedly provided with a clamping rubber cushion, and each clamping rubber cushion is provided with an arc-shaped groove.
Further, each adjusting mechanism comprises two positioning brackets, a positioning sliding rod, two limiting brackets, a transmission screw, a movable bracket, a mounting bracket, a fixed pipe, a movable pipe, a limiting touch plate and an elastic rod; the two positioning brackets are fixedly arranged on one side of the second sliding rail, the positioning sliding rod is fixedly arranged between the two positioning brackets, the two limiting brackets are fixedly arranged on the other side of the second sliding rail, the transmission screw is rotationally arranged between the two limiting brackets, the movable frame is arranged above the second sliding rail, the mounting bracket is fixedly arranged at one end of the second sliding rail, the fixed pipe is fixedly connected with the mounting bracket, the movable pipe is slidably arranged on the fixed pipe, the limiting touch plate is fixedly arranged on the movable pipe, and the elastic rods are annularly and equally arranged on the limiting touch plate; one end of each elastic rod is fixedly provided with a touch rod, one end of the movable frame is connected with the positioning slide rod in a sliding manner, the other end of the movable frame is connected with the transmission screw rod, each propping-up slat is fixedly provided with an inclined block, each inclined block corresponds to one touch rod, and the fixed pipe is connected with the movable pipe through a propping-up spring.
Further, each adjusting mechanism further comprises a worm wheel fixedly connected to one end of the transmission screw, a rotating support fixedly arranged on one limiting support, a worm arranged on the rotating support in a rotating mode, a rotating handle fixedly arranged on the worm, and the stiffness coefficient of the abutting spring is larger than that of all the elastic rods.
Further, the monitoring unit comprises two sliding rods, a sliding lantern ring, two mounting seats, a lower transverse plate and a crack sensor; wherein, two slide bars are the symmetry state and set up in second slide rail both sides and link firmly with the workstation, and the slip lantern ring slides and sets up on every slide bar, and the mount pad is fixed to be set up on every slip lantern ring, and the fixed setting of lower diaphragm is in two mount pad below, and crack sensor is fixed to be set up in lower diaphragm middle part position, and lower diaphragm is the translation output of monitoring unit.
Further, the monitoring unit comprises a transmission rod, two rolling wheels, an upper transverse plate and a driving motor; wherein, the transfer line rotates to set up on two mount pads, and two rolls the wheel and link firmly in the transfer line both ends, and every rolls the wheel and is inconsistent with a slide bar, goes up the diaphragm and fixedly sets up in two mount pads top, and driving motor is fixed to set up in last diaphragm middle part position, and driving motor links to each other with the transfer line transmission.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the following steps: the detection device can continuously clamp the two ends of the wire body during the stretching detection, prevent the wire body from being separated from the clamp due to stretching deformation, and ensure the safe performance of the stretching detection;
And two,: the detection device can monitor the wire body in real time by using the crack sensor, and because the outer side of the wire body is formed by tightly weaving a plurality of single graphite single wires around a plurality of inner graphite wires through special weaving equipment, when in tension monitoring, tension data can be obtained by monitoring deformation of the weaving wires, and the detection data is more accurate by matching with a special tension sensor;
And thirdly,: the detection device realizes stretching detection through simple mechanical transmission, saves production cost and has durable equipment.
Drawings
FIG. 1 is a schematic perspective view of an embodiment;
FIG. 2 is a top view of an embodiment;
FIG. 3 is a schematic perspective view of a movable tube of an embodiment;
FIG. 4 is a schematic perspective view of an adjusting mechanism of an embodiment;
FIG. 5 is an enlarged schematic view of the structure at B in FIG. 4;
FIG. 6 is a perspective cross-sectional view of an adjustment mechanism of an embodiment;
FIG. 7 is a schematic perspective view of a limit touch panel according to an embodiment;
FIG. 8 is a top view of the structure at the movable tube and the stationary tube of the embodiment;
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;
FIG. 10 is an enlarged schematic view at C in FIG. 9;
FIG. 11 is an exploded perspective view of the stop collar, the abutment collar and the resilient stop tube of the embodiment;
fig. 12 is a schematic perspective view of a monitoring unit according to an embodiment.
The reference numerals in the figures are: 1. a work table; 2. a detecting member; 3. a first slide rail; 4. a limit seat; 5. a bidirectional screw; 6. a first moving member; 7. a rotary driver; 8. a connecting rod; 9. a second slide rail; 10. a second moving member; 11. a locker; 12. a base; 13. a limit sleeve; 14. abutting the sleeve; 15. tightly supporting the inclined plane; 16. an elastic limit tube; 17. an elastic sheet; 18. a tension spring; 19. abutting the batten; 20. a collision block; 21. a sloping block; 22. a pressure spring; 23. a pressing plate; 24. clamping the rubber cushion; 26. a positioning bracket; 27. positioning a slide bar; 28. a limit bracket; 29. a drive screw; 30. a movable frame; 31. a worm wheel; 32. rotating the bracket; 33. a worm; 34. rotating the handle; 35. a mounting bracket; 36. a fixed tube; 37. a spring is abutted tightly; 38. a movable tube; 39. limiting the touch plate; 40. an elastic rod; 41. a touch rod; 42. a slide bar; 44. a mounting base; 45. a transmission rod; 46. a rolling wheel; 47. an upper cross plate; 48. a drive motor; 49. a lower cross plate; 50. a crack sensor.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1 to 12:
An electrical nonmetallic grounding body tensile strength detection device, comprising: the workbench 1, the first sliding rail 3 fixedly arranged on the workbench 1, the second sliding rail 9 fixedly arranged on two sides of the first sliding rail 3 in a symmetrical state, the limit seat 4 fixedly arranged on one end of the first sliding rail 3, the bidirectional screw 5 rotatably arranged on the limit seat 4, the rotary driver 7 fixedly arranged on one end of the bidirectional screw 5 (the rotary driver 7 can be a servo motor or any other executive component capable of supporting rotation), the two first moving parts 6 arranged on the first sliding rail 3 in a symmetrical state in a sliding way, the second moving part 10 arranged on each second sliding rail 9 in a sliding way, the four connecting rods 8 which are sequentially connected end to end and combined into a diamond-shaped frame, the locking unit arranged on the first sliding rail 3 and the monitoring unit arranged on the workbench 1, each first moving part 6 and each second moving part 10 are hinged with the intersection point of the diamond-shaped frame, the power output end of the rotary driver 7 is fixedly connected with the bidirectional screw 5 coaxially, the bidirectional screw 5 is connected with the two first moving parts 6 in a threaded mode, the locking unit comprises locking devices 11 used for fixing two ends of the detecting part 2 and adjusting mechanisms arranged on each second sliding rail 9, each locking device 11 comprises a base 12 fixedly arranged on each second moving part 10, a limiting sleeve 13 fixedly arranged on the base 12 and a plurality of pressing plates 23 arranged along the axis of the limiting sleeve 13, each adjusting mechanism is used for enabling the pressing plates 23 to gradually clamp the detecting part 2 when detection is conducted, each pressing plate 23 is connected with a corresponding adjusting mechanism in a transmission mode, each monitoring unit comprises a crack sensor 50 and a translation output end capable of moving along the length direction of the detecting part 2, and the crack sensor 50 is arranged on the translation output end of the monitoring unit.
When tensile strength is detected, the locking device 11 is firstly used for fixing two ends of the detecting piece 2, a plurality of pressing plates 23 are ensured to clamp the detecting piece 2, after that, the rotary driver 7 is started, the rotary driver 7 drives the bidirectional screw 5 to rotate, the bidirectional screw 5 rotates to enable the two first moving pieces 6 to be close to each other, the connecting rod 8 is pushed to be subjected to offset deformation, the two second moving pieces 10 are relatively far away from and stretch the detecting piece 2, when stretching is carried out, the translation output end of the monitoring unit starts to move along the length direction of the detecting piece 2, the crack sensor 50 is ensured to monitor the surface of the detecting piece 2 in real time, data are recorded in real time, and the tensile strength born by the detecting piece 2 is judged according to cracks on the surface of the detecting piece 2. And when stretching, the regulating mechanism drives the pressing plate 23 to continuously press down to clamp and fix the detection piece 2, so that the pressing plate 23 can be pulled more and more tightly, the detection piece 2 is prevented from being separated from the pressing plate 23 due to the fact that the stretching diameter is reduced, and normal detection is ensured.
In order to ensure that the pressure plate 23 can clamp and fix the detecting member 2 when the detecting device is in operation, the following features are specifically provided:
Each locker 11 further comprises a tightening sleeve 14 and an elastic limiting tube 16, the outer tube wall of the tightening sleeve 14 is connected with the inner tube wall of the limiting sleeve 13 through threads, the elastic limiting tube 16 is fixedly connected with the limiting sleeve 13 coaxially, a plurality of elastic sheets 17 are annularly arranged on the elastic limiting tube 16 along the axis of the elastic limiting tube, a tightening inclined plane 15 is formed on the inner tube wall of the tightening sleeve 14, and each pressing plate 23 is elastically connected with a corresponding elastic sheet 17.
When the detecting piece 2 is fixed, the abutting sleeve 14 is twisted, so that the abutting sleeve 14 moves along the axis of the limiting sleeve 13, and the abutting inclined plane 15 presses the elastic pieces 17 at the moment, so that the elastic pieces 17 are mutually close, and the pressing plates 23 are driven to fixedly clamp the two ends of the detecting piece 2.
In order to exhibit the connection relationship of the pressing plate 23 and the elastic sheet 17, the following features are specifically provided:
Each elastic sheet 17 is elastically connected with a propping slat 19, the propping slats 19 are connected with the elastic sheets 17 through tension springs 18, each propping slat 19 is elastically connected with a pressing plate 23, the pressing plates 23 are connected with the propping slats 19 through pressure springs 22, the rigidity coefficient of the tension springs 18 is larger than that of the pressure springs 22, and the adjusting mechanism is in transmission connection with the propping slats 19.
When the elastic sheet 17 is pressed down, the elastic sheet 17 drives the abutting strip plate 19 to approach towards the detecting piece 2, the pressing plate 23 contacts with the detecting piece 2 to clamp the detecting piece 2, and the pressing plate continues to twist the abutting sleeve 14 until the two ends of the detecting piece 2 are firmly fixed, and in the process, the pressure spring 22 is compressed under the stress. When the stretching detection is carried out, the two ends of the detection piece 2 are stretched, at the moment, the adjusting mechanism drives the abutting ribbon board 19 to carry out secondary movement, so that the abutting ribbon board 19 is simultaneously closed, the abutting ribbon board 19 drives the pressing boards 23 to be mutually closed, so that encircling clamping force is carried out on the two ends of the detection piece 2 again when stretching is carried out, the two ends of the detection piece 2 can still be firmly clamped when stretching is carried out, and at the moment, the tension spring 18 is stressed to carry out self-adaptive stretching.
In order to ensure that the abutting strips 19 provide a hard interference force to the pressing plate 23 when the compression of the pressure spring 22 is limited, the following features are provided:
Each abutting slat 19 is fixedly provided with an abutting block 20 at both ends, and the abutting blocks 20 are used for providing a rigid abutting force to the pressing plate 23 when the pressure spring 22 is compressed to the limit.
When the abutting ribbon 19 is driven by the adjusting mechanism to draw close again and move, at this time, because the compression of the pressure spring 22 occurs, the hard abutting force provided by the compressed pressure spring 22 is not very stable, and the setting of the abutting block 20 can ensure that the abutting ribbon 19 can generate hard abutting with the pressing plate 23 when the abutting ribbon 19 is pressed down for the second time, so that the pressing plate 23 can stably clamp and fix the two ends of the detecting piece 2 after the stretching deformation when stretching.
In order to ensure a better grip when all the pressing plates 23 are held against the detecting member 2, the following features are provided:
each pressing plate 23 is fixedly provided with a clamping rubber pad 24, and the clamping rubber pad 24 is provided with an arc-shaped groove.
When the detection is carried out, the pressing plate 23 clamps the detection piece 2 with the clamping rubber cushion 24, the arc-shaped groove of the clamping rubber cushion 24 can enable the detection piece 2 to be firmly held tightly, when all the pressing plates 23 are held tightly, the clamping rubber cushion 24 can relatively deform to be tightly attached to the detection piece 2, friction force is increased, and the detection piece 2 is prevented from being separated from the detection piece, so that the normal operation of the detection device is ensured.
In order to show the detailed structure of the adjusting mechanism, the following features are specifically provided:
Each adjusting mechanism comprises two positioning brackets 26 fixedly arranged on one side of the second sliding rail 9, two positioning sliding rods 27 fixedly arranged between the two positioning brackets 26, two limiting brackets 28 fixedly arranged on the other side of the second sliding rail 9, a transmission screw 29 rotatably arranged between the two limiting brackets 28, a movable frame 30 arranged above the second sliding rail 9, a worm wheel 31 coaxially fixedly connected with one end of the transmission screw 29, a rotating bracket 32 fixedly arranged on one limiting bracket 28, a worm 33 rotatably arranged on the rotating bracket 32, a rotating handle 34 fixedly arranged on the worm 33, a mounting bracket 35 fixedly arranged on one end of the second sliding rail 9, a fixed pipe 36 fixedly connected with the mounting bracket 35, a movable pipe 38 coaxially and slidably arranged on the fixed pipe 36, a limiting touch plate 39 fixedly arranged on the movable pipe 38 and a plurality of elastic rods 40 which are annular and equally spaced, wherein one end of each elastic rod 40 is fixedly provided with a touch rod 41 (as shown in fig. 10), one end of each movable frame 30 is slidably connected with the positioning bracket 27, the other end of each touch rod 29 is fixedly connected with the corresponding spring plate 21 by the corresponding to the corresponding mounting bracket 37, and each touch rod 37 is tightly connected with the corresponding spring plate 41.
Before the detection device operates, the worm 33 is driven to rotate by the rotating handle 34, the worm 33 rotates to drive the worm wheel 31 to rotate, the worm wheel 31 rotates to drive the driving screw 29 to rotate, the driving screw 29 rotates to enable the movable frame 30 to move along the axis direction of the positioning slide rod 27, the movable frame 30 moves to drive the limiting touch plate 39 to move, the limiting touch plate 39 drives the movable tube 38 to move along the axis of the fixed tube 36 and press the abutting spring 37, the telescopic length of the movable tube 38 is adjusted in advance according to the detection experiment, and therefore the elastic rod 40 on the movable tube 38 is ensured to drive the abutting rod 41 to contact the inclined block 21 (the limiting touch plate 39 always abuts against the movable frame 30 under the action of the abutting spring 37). When the stretching detection is performed, as the detecting piece 2 is stretched, the inclined block 21 slowly moves towards the touch rod 41 until the elastic rod 40 is compressed to the limit, then the inclined block 21 is abutted against the touch rod 41, the touch rod 41 drives the elastic rod 40 extruded to the limit to move, so that the limit touch plate 39 drives the fixed tube 36 to operate and extrudes the abutting spring 37, in the process, the touch rod 41 is contacted with the inclined block 21, the abutting strip plate 19 is continuously closed in the stretching process of the detecting piece 2, and the two ends of the detecting piece 2 are clamped and fixed for the second time, so that the normal detection experiment is ensured.
In order to ensure that the elastic rod 40 can be compressed first and the abutting spring 37 can be compressed after the elastic rod 40 is compressed to the limit when the detection device operates, the following characteristics are specifically provided:
the stiffness coefficient of the abutting springs 37 is larger than that of all the elastic rods 40.
When the detection device operates, the elastic rod 40 is firstly contracted, after the elastic rod 40 is firstly contracted, the abutting spring 37 is extruded, the contraction distance of the elastic rod 40 is set in advance before detection is performed, the elastic rod 40 has the function of enabling the contact rod 41 to be always in contact with the inclined block 21, namely, when detection is performed, the inclined block 21 is in contact with the contact rod 41, so that a plurality of abutting strips 19 have the trend of mutually approaching to each other to tightly hold the detection piece 2 during detection, normal operation of detection is ensured, and the pressing plate 23 can continuously clamp the detection piece 2.
In order to show the detailed structure of the monitoring unit, the following features are specifically provided:
The monitoring unit comprises two sliding rods 42 which are symmetrically arranged on two sides of the second sliding rail 9 and fixedly connected with the workbench 1, sliding lantern rings which are arranged on each sliding rod 42 in a sliding manner, mounting seats 44 which are fixedly arranged on each sliding lantern ring, transmission rods 45 which are rotatably arranged on the two mounting seats 44, rolling wheels 46 which are coaxially and fixedly connected with two ends of the transmission rods 45, an upper transverse plate 47 which is fixedly arranged above the two mounting seats 44, a lower transverse plate 49 which is fixedly arranged below the two mounting seats 44, a driving motor 48 which is fixedly arranged at the middle position of the upper transverse plate 47, and a crack sensor 50 which is fixedly arranged at the middle position of the lower transverse plate 49, wherein the driving motor 48 is connected with the transmission rods 45 in a transmission manner, each rolling wheel 46 is in contact with one sliding rod 42, and the lower transverse plate 49 is the translational output end of the monitoring unit.
When the detection device operates, the driving motor 48 drives the transmission rod 45 to rotate, the transmission rod 45 rotates to drive the rolling wheel 46 to rotate, the rolling wheel 46 rotates to abut against the sliding rod 42, the mounting seat 44 can move along the sliding rod 42, the lower transverse plate 49 further moves along the axis direction of the sliding rod 42, and finally the crack sensor 50 is driven to move along the length direction of the detection piece 2, so that real-time monitoring can be performed on the detection piece 2 when detection is ensured, and experimental data can be recorded conveniently.
Working principle: when the device is used, the two ends of the detecting piece 2 are respectively inserted into the corresponding lockers 11, the abutting sleeve 14 is twisted to enable the abutting sleeve 14 to move along the axis of the limiting sleeve 13, the abutting inclined surfaces 15 press the elastic pieces 17 at the moment to enable the elastic pieces 17 to be close to each other, the elastic pieces 17 drive the abutting strip plates 19 to approach the detecting piece 2, the pressing plates 23 are driven by the abutting strip plates 19 to approach the detecting piece 2 until the detecting piece 2 is contacted and clamped, and the abutting sleeve 14 is twisted continuously until the two ends of the detecting piece 2 are firmly fixed, so that the pressure spring 22 is compressed under the force in the process. Then, the rotary driver 7 is started, the rotary driver 7 drives the bidirectional screw 5 to rotate, the bidirectional screw 5 rotates to enable the two first moving parts 6 to be close to each other, the connecting rod 8 is pushed to deflect and deform, the two second moving parts 10 are relatively far away from each other and stretch the detecting part 2, the inclined block 21 slowly moves towards the touch rod 41 along with stretching of the detecting part 2 until the elastic rod 40 is compressed to the limit, then the inclined block 21 is abutted against the touch rod 41, the touch rod 41 drives the elastic rod 40 which is extruded to the limit to move, the limiting touch plate 39 drives the movable tube 38 to operate and extrudes the abutting spring 37, in the process, the touch rod 41 is contacted with the inclined block 21, the abutting plate 19 is kept close in the stretching process of the detecting part 2, and the pressing plate 23 is driven to clamp and fix two ends of the detecting part 2 in a secondary clamping mode with the clamping rubber pad 24, and normal detection experiment is guaranteed. And when the detecting piece 2 starts to be stretched, the driving motor 48 drives the driving rod 45 to rotate, the driving rod 45 rotates to drive the rolling wheel 46 to rotate, and the rolling wheel 46 rotates to abut against the sliding rod 42, so that the mounting seat 44 can move along the sliding rod 42, and further the lower transverse plate 49 can move along the axis direction of the sliding rod 42, and finally the crack sensor 50 is driven to move along the length direction of the detecting piece 2, thereby ensuring that the detecting piece 2 can be monitored in real time when the detecting is performed, and being convenient for recording experimental data.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a nonmetal ground connection body tensile strength detection device of electric power which characterized in that includes: the device comprises a workbench (1), a first sliding rail (3), two second sliding rails (9), a connecting rod driving assembly, a locking unit and a monitoring unit; wherein,
The first sliding rail (3) is fixedly arranged on the workbench (1), the two second sliding rails (9) are symmetrically fixedly arranged on two sides of the first sliding rail (3), the connecting rod driving assembly is slidably arranged on the first sliding rail (3) and each second sliding rail (9), the locking unit is arranged on the first sliding rail (3), and the monitoring unit is arranged on the workbench (1);
The locking unit comprises two locking devices (11) used for fixing two ends of the detection piece (2) and an adjusting mechanism arranged on each second sliding rail (9), each locking device (11) comprises a base (12) fixedly arranged on a connecting rod driving assembly, a limiting sleeve (13) fixedly arranged on the base (12) and a plurality of pressing plates (23) arranged along the axis of the limiting sleeve (13), the adjusting mechanism is used for enabling the pressing plates (23) to gradually clamp the detection piece (2) when the detection piece (2) is detected, each pressing plate (23) is connected with a corresponding adjusting mechanism in a transmission mode, the monitoring unit comprises a crack sensor (50) and a translation output end capable of moving along the length direction of the detection piece (2), and the crack sensor (50) is arranged on the translation output end of the monitoring unit.
2. The device for detecting the tensile strength of the electric nonmetallic grounding body according to claim 1, wherein the connecting rod driving assembly comprises a limiting seat (4), a bidirectional screw rod (5), a rotary driver (7), two first moving parts (6), two second moving parts (10) and four connecting rods (8); wherein,
The limiting seat (4) is fixedly arranged at one end of the first sliding rail (3), the bidirectional screw (5) is rotationally arranged on the limiting seat (4), the rotary driver (7) is fixedly arranged at one end of the bidirectional screw (5), the two first moving parts (6) are arranged on the first sliding rail (3) in a sliding mode, the second moving parts (10) are arranged on each second sliding rail (9) in a sliding mode, the four connecting rods (8) are sequentially connected in an end-to-end mode to form a diamond frame, each first moving part (6) and each second moving part (10) are hinged to the intersection point of the diamond frame, and the bidirectional screw (5) is connected with the two first moving parts (6).
3. The electric nonmetallic grounding body tensile strength detection device according to claim 1, characterized in that each locker (11) further comprises a supporting sleeve (14) and an elastic limiting pipe (16), the outer pipe wall of the supporting sleeve (14) is connected with the inner pipe wall of the limiting sleeve (13), the elastic limiting pipe (16) is fixedly connected with the limiting sleeve (13), a plurality of elastic sheets (17) are annularly arranged on the elastic limiting pipe (16) along the axis of the elastic limiting pipe, supporting inclined planes (15) are formed on the inner pipe wall of the supporting sleeve (14), and each pressing plate (23) is elastically connected with a corresponding elastic sheet (17).
4. A device for detecting the tensile strength of an electric nonmetal grounding body according to claim 3, characterized in that each elastic sheet (17) is elastically connected with a supporting strip plate (19), the supporting strip plates (19) are connected with the elastic sheet (17) through tension springs (18), each supporting strip plate (19) is elastically connected with a pressing plate (23), the pressing plates (23) are connected with the supporting strip plates (19) through pressure springs (22), the rigidity coefficient of the tension springs (18) is larger than that of the pressure springs (22), and the adjusting mechanism is in transmission connection with the supporting strip plates (19).
5. The device for detecting the tensile strength of the electric nonmetallic grounding body according to claim 4, wherein the two ends of each abutting slat (19) are fixedly provided with abutting blocks (20), and the abutting blocks (20) are used for providing a rigid abutting force for the pressing plate (23) after the compression spring (22) is compressed to the limit.
6. The device for detecting the tensile strength of the electric nonmetal grounding body according to claim 5, wherein each pressing plate (23) is fixedly provided with a clamping rubber pad (24), and the clamping rubber pad (24) is provided with an arc-shaped groove.
7. The device for detecting the tensile strength of the electric nonmetallic grounding body according to claim 6, wherein each adjusting mechanism comprises two positioning brackets (26), a positioning slide bar (27), two limiting brackets (28), a transmission screw (29), a movable bracket (30), a mounting bracket (35), a fixed pipe (36), a movable pipe (38), a limiting touch plate (39) and an elastic rod (40); wherein,
The two positioning brackets (26) are fixedly arranged on one side of the second sliding rail (9), the positioning sliding rod (27) is fixedly arranged between the two positioning brackets (26), the two limiting brackets (28) are fixedly arranged on the other side of the second sliding rail (9), the transmission screw (29) is rotatably arranged between the two limiting brackets (28), the movable bracket (30) is arranged above the second sliding rail (9), the mounting bracket (35) is fixedly arranged at one end of the second sliding rail (9), the fixed pipe (36) is fixedly connected with the mounting bracket (35), the movable pipe (38) is slidably arranged on the fixed pipe (36), the limiting contact plate (39) is fixedly arranged on the movable pipe (38), and the plurality of elastic rods (40) are annularly arranged on the limiting contact plate (39) at equal intervals;
One end of each elastic rod (40) is fixedly provided with a touch rod (41), one end of the movable frame (30) is connected with the positioning slide rod (27) in a sliding mode, the other end of the movable frame is connected with the transmission screw rod (29), each abutting slat (19) is fixedly provided with an inclined block (21), each inclined block (21) corresponds to one touch rod (41), and the fixed pipe (36) is connected with the movable pipe (38) through the abutting spring (37).
8. The device for detecting the tensile strength of the electric nonmetallic grounding body according to claim 7, wherein each adjusting mechanism further comprises a worm wheel (31) fixedly connected to one end of a transmission screw (29), a rotating bracket (32) fixedly arranged on one limiting bracket (28), a worm (33) rotatably arranged on the rotating bracket (32), a rotating handle (34) fixedly arranged on the worm (33), and the stiffness coefficient of a pressing spring (37) is larger than that of all elastic rods (40).
9. The device for detecting the tensile strength of the electric nonmetallic grounding body according to claim 1, wherein the monitoring unit comprises two sliding rods (42), a sliding collar, two mounting seats (44), a lower transverse plate (49) and a crack sensor (50); wherein,
The two sliding rods (42) are symmetrically arranged on two sides of the second sliding rail (9) and fixedly connected with the workbench (1), the sliding lantern rings are slidably arranged on each sliding rod (42), the mounting seats (44) are fixedly arranged on each sliding lantern ring, the lower transverse plates (49) are fixedly arranged below the two mounting seats (44), the crack sensors (50) are fixedly arranged in the middle positions of the lower transverse plates (49), and the lower transverse plates (49) are translational output ends of the monitoring units.
10. The device for detecting the tensile strength of the electric nonmetallic earthing body according to claim 9, wherein the monitoring unit comprises a transmission rod (45), two rolling wheels (46), an upper transverse plate (47) and a driving motor (48); wherein,
The transmission rod (45) rotates and sets up on two mount pads (44), and two rolls round (46) link firmly in transmission rod (45) both ends, and every rolls round (46) and a slide pole (42) are inconsistent, and go up diaphragm (47) fixed setting in two mount pads (44) top, and driving motor (48) are fixed to be set up in last diaphragm (47) middle part position, and driving motor (48) link to each other with transmission rod (45) transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410388829.7A CN118050262A (en) | 2024-04-01 | 2024-04-01 | Tensile strength detection device for electric nonmetal grounding body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410388829.7A CN118050262A (en) | 2024-04-01 | 2024-04-01 | Tensile strength detection device for electric nonmetal grounding body |
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| CN202410388829.7A Pending CN118050262A (en) | 2024-04-01 | 2024-04-01 | Tensile strength detection device for electric nonmetal grounding body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119394781A (en) * | 2025-01-02 | 2025-02-07 | 常州市丰国电器有限公司 | A tensile testing device for cable production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119394781A (en) * | 2025-01-02 | 2025-02-07 | 常州市丰国电器有限公司 | A tensile testing device for cable production |
| CN119394781B (en) * | 2025-01-02 | 2025-04-29 | 常州市丰国电器有限公司 | A tensile testing device for cable production |
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