CN117054259A - Impact-resistant testing system for strength of transformer shell - Google Patents
Impact-resistant testing system for strength of transformer shell Download PDFInfo
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- CN117054259A CN117054259A CN202311262798.2A CN202311262798A CN117054259A CN 117054259 A CN117054259 A CN 117054259A CN 202311262798 A CN202311262798 A CN 202311262798A CN 117054259 A CN117054259 A CN 117054259A
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000009863 impact test Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 3
- 238000010030 laminating Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000032258 transport Effects 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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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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
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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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
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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
- G01N2203/026—Specifications of the specimen
- G01N2203/0296—Welds
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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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to the technical field of strength test of transformer shells, in particular to a strength impact-resistant test system of a transformer shell. The device comprises a supporting frame, a hydraulic lifting device, a testing platform device, a sealing detection device and a strength testing device. The existing method for testing the strength of the transformer shell is low in testing efficiency and not comprehensive enough, whether the impact strength is qualified or not is judged by observing whether the shell is damaged by naked eyes or not after testing, and meanwhile the transformer shell and the radiating fins are easily damaged in the testing process. The testing platform device, the strength testing device and the sealing detection device adopted by the transformer shell strength impact-resistant testing system provided by the application are matched, so that the influence of unstable clamping on the testing result can be avoided, the impact-resistant detection can be carried out on the transformer shell and the radiating fin, whether the impact-resistant strength is qualified or not is judged by detecting whether the welding seam and the joint are leaked or not, and the detection result is more accurate.
Description
Technical Field
The application relates to the technical field of strength test of transformer shells, in particular to a strength impact-resistant test system of a transformer shell.
Background
The transformer is one of the main electrical equipment of the transformer substation, the power transformer in China is mostly an oil immersed transformer, oil seepage is a common fault of the oil immersed transformer, oil seepage of the transformer occurs for many years, the service life of the transformer is shortened due to severe seepage, the safe and stable operation of a system is affected, and the social and user economic benefits are also seriously affected.
The radiating fin adopted by the existing oil immersed transformer is a fragile link in the transformer structure, and is easy to damage the radiating fin of the transformer in the process of carrying or installing, so that leakage occurs. However, the existing impact resistance test method for the strength of the transformer shell is low in conventional test efficiency due to the fact that the transformer shell is large and the specifications of the radiating fins are not uniform, impact resistance test cannot be conducted on the transformer shell, the welding seams of the radiating fins and the connecting positions of the radiating fins, the transformer shell and the radiating fins are easy to damage in the test process, whether the impact resistance is qualified or not is judged by observing whether the transformer shell is damaged or not through naked eyes, and the detection precision is low.
Disclosure of Invention
The technical problems to be solved are as follows: the application provides a system for testing the strength and impact resistance of a transformer shell, which can solve the problems.
The technical scheme is as follows: in order to achieve the above purpose, the application adopts the following technical scheme that the system for testing the strength and the impact resistance of the transformer shell is completed through the cooperation of the equipment for testing the strength and the impact resistance of the transformer shell, the equipment for testing the strength and the impact resistance of the transformer shell comprises a supporting frame, the upper end of the supporting frame is provided with a hydraulic lifting device, the lower end in the supporting frame is provided with a testing platform device, the upper end of the testing platform device is provided with the transformer shell, the lower end of the hydraulic lifting device is provided with a sealing detection device, and the periphery of the transformer shell is provided with strength testing devices which are in one-to-one correspondence with cooling fins.
The strength testing device comprises four first rectangular supporting plates which are positioned on the outer sides of the radiating fins and connected with the hydraulic lifting device, one sides of the first rectangular supporting plates, which are far away from the radiating fins, are provided with shell impact mechanisms, and the two sides of the first rectangular supporting plates, which are provided with the radiating fin impact mechanisms, are provided with the shell impact mechanisms.
As a preferred technical scheme of the application, the shell striking mechanism comprises a first rectangular chute arranged on four rectangular upright posts of a supporting frame, a first rectangular connecting plate is arranged on the front and rear opposite first rectangular chute in a sliding way, a second rectangular connecting plate which is connected with the rectangular upright posts in a sliding way is arranged on the front and rear sides of the two first rectangular connecting plates in a sliding way, a second rectangular supporting plate which is wider than the first rectangular supporting plate is arranged at the upper ends of the first rectangular connecting plate and the second rectangular connecting plate, a first motor is arranged at one ends, close to the radiating fins, of the first rectangular connecting plate and the second rectangular connecting plate through a motor base, a first cam which is fixedly connected with an output shaft of the first motor is arranged between the first rectangular supporting plate and the second rectangular supporting plate, a first rectangular through hole which is enough for the first cam to rotate is arranged between the second rectangular supporting plate and the second rectangular supporting plate, the first rectangular supporting plate and the second rectangular supporting plate are connected through a plurality of first compression springs, and a plurality of rectangular rubber jacking blocks are uniformly arranged in correspondence to the cavity of the radiating fins.
As a preferable technical scheme of the application, the radiating fin impact mechanism comprises a first rectangular sliding plate which penetrates through the middle parts of a plurality of rectangular rubber ejector blocks on the same side in a sliding way, a second motor which is connected with the first rectangular supporting plate through a motor base is arranged on two sides of the first rectangular supporting plate, a second cam which is connected with an output shaft of the second motor is arranged on two sides of the first rectangular sliding plate in a rolling way, a rectangular groove is formed in the rectangular rubber ejector block, a rectangular pushing plate which is fixedly connected with the first rectangular sliding plate is arranged in the rectangular groove in a sliding way, a second rectangular sliding plate which is connected with the rectangular pushing plate through a second compression spring is arranged on two sides of the rectangular rubber ejector block in a sliding way corresponding to the rectangular groove, and a plurality of rubber semicircular ejector blocks are uniformly arranged on one end, far away from the rectangular groove, of the second rectangular sliding plate.
As a preferable technical scheme of the application, the hydraulic lifting device comprises a first round through hole formed in the middle of the upper end of a supporting frame, a plurality of runway-shaped sliding grooves are uniformly formed in the upper end of the supporting frame corresponding to a first rectangular supporting plate, four hydraulic cylinders are arranged in the upper end of the supporting frame corresponding to a transformer shell, rectangular connecting blocks are jointly mounted at the lower ends of telescopic ends of two opposite hydraulic cylinders, two rectangular telescopic rods and two rectangular connecting rods are respectively mounted on the first rectangular supporting plate and the second rectangular supporting plate corresponding to the left side and the right side of the two rectangular connecting blocks, one rectangular telescopic rod and one rectangular connecting rod are respectively mounted on the first rectangular supporting plate and the second rectangular supporting plate corresponding to the front side and the rear side of the two rectangular connecting blocks, a plurality of sliding rods which are connected with the runway-shaped sliding grooves in a sliding mode are uniformly mounted on the upper end of the first rectangular supporting plate, a synchronous sliding plate is jointly sleeved on the upper end of the sliding rods, a rectangular sleeve plate fixedly connected with the telescopic ends of the rectangular telescopic rods is jointly sleeved on the lower ends of the sliding rods located on the same side, and two sides of the rectangular sleeve plate are slidingly connected with the second rectangular sliding grooves formed in the rectangular sliding grooves and arranged on the rectangular connecting rods.
As a preferable technical scheme of the application, the test platform device comprises a rectangular supporting seat arranged at the inner lower end of a supporting frame, a rectangular base is arranged at the upper end of the rectangular supporting seat, a roller mechanism is arranged in the rectangular base, and clamping mechanisms are arranged at the left end and the right end of the rectangular base.
As a preferable technical scheme of the application, the roller mechanism comprises a second rectangular through hole formed in the front side of the rectangular base, a plurality of third rectangular through holes are symmetrically and uniformly formed in the middle of the rectangular base, a plurality of transmission shafts corresponding to the third rectangular through holes in one-to-one mode are rotatably mounted in the second rectangular through holes, rollers sleeved on the transmission shafts are rotatably mounted in the third rectangular through holes, the transmission shafts in the second rectangular through holes are connected with a chain in a matched mode through gears, and the front end of the transmission shaft at the leftmost side penetrates through the rectangular base and is connected with an output shaft of a third motor mounted at the front end of the rectangular base through a motor base.
As a preferable technical scheme of the application, the clamping mechanism comprises a double-shaft motor, wherein the middle parts of the left end and the right end of a rectangular base are connected to the rectangular base through motor bases, two output shafts of the double-shaft motor are fixedly connected with lead screws, the lead screws are connected with movable sliding blocks which are connected to the rectangular base in a sliding manner through threads, the upper ends of the movable sliding blocks are provided with clamping blocks which are connected to the rectangular base in a sliding manner and can clamp a transformer shell, a plurality of hook-shaped clamping plates which can be attached to a radiating fin connecting pipe are uniformly arranged on the front side and the rear side of the upper end of the rectangular base, the plurality of hook-shaped clamping plates on the same side are connected through a first rotating shaft, the left side and the right side of the first rotating shaft are arranged on the rectangular base through bearing seats, annular sleeves are sleeved on the left side and the right side of the first rotating shaft corresponding to the clamping blocks, the annular sleeves are connected with adjacent bearing seats in a rotating manner through torsion springs, and the annular sleeves are connected with a second rectangular sliding block, and the clamping blocks are provided with rectangular top plates attached to the second rectangular sliding blocks.
As a preferable technical scheme of the application, the sealing detection device comprises a heavy pressing plate which is commonly installed at the lower ends of two rectangular connecting blocks, an air pump is arranged at the upper end of the heavy pressing plate and corresponds to a first circular through hole, a rectangular cavity which is communicated with the air pump is arranged in the heavy pressing plate, a second circular through hole which penetrates through the heavy pressing plate and corresponds to a circular hole of a mounting sleeve at the upper end of a transformer shell is arranged at the lower end of the rectangular cavity, and a rectangular sealing plate which can be attached to the transformer shell is installed at the lower end of the heavy pressing plate.
In summary, the present application includes at least one of the following beneficial technical effects: 1. the roller mechanism adopted by the application can assist in adjusting the alignment strength testing device of the radiating fins of the transformer shell, can save time and labor and improve the working efficiency when the transformer shell is manually assembled and disassembled, and the clamping mechanism can assist in clamping the radiating fins through the hook-shaped clamping plates arranged on the side edges while clamping the transformer shell, so that the influence on the testing result caused by unstable clamping of the transformer shell and the radiating fins is avoided.
2. The strength testing device can perform impact strength testing on the transformer shell and the radiating fins, can perform self-adaptive adjustment according to the radiating fins with different thicknesses, can avoid damaging the radiating fins and the transformer shell during impact strength testing, and improves testing efficiency.
3. The sealing detection device adopted by the application can detect whether the welding seam and the connecting part of the transformer shell and the radiating fin after the impact strength test are leaked or not, so as to judge whether the impact strength is qualified or not, and simultaneously can be matched with the strength test device to perform certain weight test on the upper end of the transformer shell, thereby ensuring the comprehensiveness of the test.
Drawings
The application will be further described with reference to the drawings and examples.
Fig. 1 is a schematic perspective view of the present application.
Fig. 2 is a front view of the present application.
Fig. 3 is an enlarged view of the present application at B in fig. 2.
Fig. 4 is a left side view of the present application.
Fig. 5 is a front cross-sectional view of the present application.
Fig. 6 is a left cross-sectional view of the present application.
Fig. 7 is an enlarged view of the present application at X in fig. 6.
Fig. 8 is an enlarged view of the application at N in fig. 6.
Fig. 9 is a top cross-sectional view of the present application.
Fig. 10 is a schematic perspective view of a transformer housing according to the present application.
FIG. 11 is a schematic perspective view of a test platform device according to the present application.
Fig. 12 is a schematic perspective view of a seal detecting device according to the present application.
Fig. 13 is a schematic perspective view of a hydraulic lifting device according to the present application.
Fig. 14 is a schematic perspective view of the strength testing apparatus of the present application.
Fig. 15 is a cross-sectional view of a heat sink and heat sink impingement mechanism of the present application.
In the figure: 1. a support frame; 2. a hydraulic lifting device; 3. a test platform device; 4. a transformer housing; 5. a seal detection device; 6. a heat sink; 7. a strength testing device; 21. a first round through hole; 22. a racetrack-shaped chute; 23. a hydraulic cylinder; 24. a rectangular connecting block; 25. a rectangular telescopic rod; 26. a rectangular connecting rod; 27. a slide bar; 28. a synchronous sliding plate; 29. rectangular sleeve plate; 30. a first rectangular sliding block; 31. a second rectangular chute; 32. a rectangular supporting seat; 33. a rectangular base; 34. a roller mechanism; 35. a clamping mechanism; 51. a heavy pressing plate; 52. an air pump; 53. a rectangular cavity; 54. a circular hole; 55. a second round through hole; 56. a rectangular sealing plate; 71. a first rectangular supporting plate; 72. a housing strike mechanism; 73. a fin strike mechanism; 341. rectangular through holes II; 342. a third rectangular through hole; 343. a transmission shaft; 344. a roller; 345. a gear; 346. a chain; 347. a third motor; 351. a biaxial motor; 352. a screw rod; 353. moving the slide block; 354. a clamping block; 355. a fin connection tube; 356. a hook-shaped clamping plate; 357. a first rotating shaft; 359. an annular sleeve; 361. a second rectangular sliding block; 362. a rectangular top plate; 721. a first rectangular chute; 722. a first rectangular connecting plate; 723. a second rectangular connecting plate; 724. a second rectangular support plate; 725. a motor I; 726. a cam number one; 727. a first rectangular through hole; 728. a first compression spring; 729. rectangular rubber top blocks; 731. a first rectangular slide plate; 732. a motor II; 733. a cam number two; 734. rectangular grooves; 735. a compression spring II; 736. a second rectangular sliding plate; 737. a rubber semicircular ejector block; 738. rectangular push plate.
Detailed Description
Embodiments of the application are described in detail below with reference to the attached drawings, but the application can be implemented in a number of different ways, which are defined and covered by the claims.
Referring to fig. 1 and 10, a transformer housing strength impact-resistant testing system is completed through the cooperation of a transformer housing strength impact-resistant testing device, the transformer housing strength impact-resistant testing device comprises a supporting frame 1, a hydraulic lifting device 2 is installed at the upper end of the supporting frame 1, a testing platform device 3 is installed at the inner lower end of the supporting frame 1, a transformer housing 4 is placed at the upper end of the testing platform device 3, a sealing detection device 5 is installed at the lower end of the hydraulic lifting device 2, and strength testing devices 7 with cooling fins 6 are installed around the transformer housing 4.
Referring to fig. 1 and 14, the strength testing device 7 includes four rectangular support plates 71 located outside the heat sink 6 and connected to the hydraulic lifting device 2, a housing striking mechanism 72 is installed on a side of the rectangular support plates 71 away from the heat sink 6, and heat sink striking mechanisms 73 are installed on two sides of the heat sink 6 on the rectangular support plates 71.
Referring to fig. 2-6, 9, 13 and 14, the shell striking mechanism 72 includes a first rectangular chute 721 formed on four rectangular posts of the support frame 1, a first rectangular connecting plate 722 is slidably mounted on the first rectangular chute 721, a second rectangular connecting plate 723 slidably connected to the rectangular posts is mounted on the front and rear sides of the first rectangular connecting plate 722, a second rectangular supporting plate 724 wider than the first rectangular supporting plate 71 is mounted at the upper ends of the first rectangular connecting plate 722 and the second rectangular connecting plate 723, a first motor 725 is mounted at one end of the first rectangular connecting plate 722 and the second rectangular connecting plate 723, which is close to the heat sink 6, through a motor base, a first cam 726 fixedly connected to an output shaft of the first motor 725 is disposed between the first rectangular supporting plate 71 and the second rectangular supporting plate 724, a first rectangular through hole 727 sufficient for the first cam 726 to rotate is formed between the first rectangular supporting plate 71 and the second rectangular supporting plate 724, and the first rectangular supporting plate 724 is connected through a plurality of first compression springs 728, and a plurality of uniform top blocks 729 are mounted on the first rectangular supporting plate 71 and the second rectangular supporting plate 724 corresponding to the heat sink 6.
Referring to fig. 5, 6, 9 and 13, the hydraulic lifting device 2 includes a first circular through hole 21 formed in the middle of the upper end of the supporting frame 1, a plurality of racetrack-shaped sliding grooves 22 are uniformly formed in the upper end of the supporting frame 1 corresponding to the first rectangular supporting plate 71, four hydraulic cylinders 23 are disposed in the upper end of the supporting frame 1 corresponding to the transformer housing 4, rectangular connecting blocks 24 are jointly mounted at the lower ends of the telescopic ends of the two opposite hydraulic cylinders 23, two rectangular connecting blocks 24 corresponding to the first rectangular supporting plate 71 and the second rectangular supporting plate 724 on the left side and the right side are respectively provided with two rectangular telescopic rods 25 and two rectangular connecting rods 26, one rectangular telescopic rod 25 and one rectangular connecting rod 26 are respectively mounted on the first rectangular supporting plate 71 and the second rectangular supporting plate 724 on the front side and the rear side, a plurality of sliding rods 27 connected to the racetrack-shaped sliding grooves 22 in a sliding manner are uniformly mounted on the upper end of the first rectangular supporting plate 71, synchronous sliding plates 28 are sleeved at the upper ends of the sliding rods 27, rectangular sleeve plates 29 fixedly connected to the rectangular telescopic rectangular sleeve plates 25 at the lower ends of the rectangular telescopic rods 25 are jointly sleeved at the lower ends of the plurality of the rectangular supporting plates 27 on the same side, and rectangular sleeve plates 29 are fixedly connected to the rectangular sleeve plates 29 connected to the rectangular sleeve plates 31 on the rectangular sleeve plates 31 through the rectangular sliding rods 31 on the two sides.
The first motor 725 drives the first cam 726 to rotate into the first rectangular through hole 727, the first compression spring 728 drives the first rectangular supporting plate 71 to move towards the second rectangular supporting plate 724, the first rectangular supporting plate 71 drives the rectangular rubber jacking block 729 to move, meanwhile, the sliding rod 27 drives the rectangular sleeve plate 29 to slide towards the second rectangular supporting plate 724 along the second rectangular sliding groove 31, when the rectangular rubber jacking block 729 is located outside the cooling fin 6, the hydraulic cylinder 23 drives the rectangular connecting block 24 to move upwards, the rectangular connecting block 24 drives the second rectangular supporting plate 724 and the rectangular sleeve plate 29 to move upwards through the rectangular connecting rod 26, the second rectangular supporting plate 724 drives the first rectangular connecting plate 722 and the second rectangular connecting plate 723 to move upwards, meanwhile, the rectangular sleeve plate 29 drives the first rectangular supporting plate 71 and the rectangular rubber jacking block 729 to move upwards through the sliding rod 27, and at the moment, the hydraulic lifting device 2 drives the strength testing device 7 to move to the uppermost end so as to leave enough space to place the transformer housing 4 to be tested.
Referring to fig. 11, the test platform device 3 includes a rectangular support base 32 mounted at the inner lower end of the support frame 1, a rectangular base 33 is disposed at the upper end of the rectangular support base 32, a roller mechanism 34 is mounted in the rectangular base 33, and clamping mechanisms 35 are mounted at the left and right ends of the rectangular base 33.
Referring to fig. 5-8 and 11, the roller mechanism 34 includes a second rectangular through hole 341 formed in the front side of the rectangular base 33, a plurality of third rectangular through holes 342 are symmetrically and uniformly formed in the middle of the rectangular base 33, a plurality of transmission shafts 343 corresponding to the third rectangular through holes 342 in a one-to-one manner are rotatably mounted in the second rectangular through holes 341, rollers 344 sleeved on the transmission shafts 343 are rotatably mounted in the third rectangular through holes 342, the transmission shafts 343 located in the second rectangular through holes 341 are connected with the chains 346 in a matching manner through gears 345, and the front end of the transmission shaft 343 located at the leftmost side penetrates through the rectangular base 33 and is connected with an output shaft of a third motor 347 mounted at the front end of the rectangular base 33 through a motor base.
Referring to fig. 5-7, fig. 10 and fig. 11, the clamping mechanism 35 includes a dual-shaft motor 351 connected to the rectangular base 33 through a motor base at the middle of the left and right ends of the rectangular base 33, two output shafts of the dual-shaft motor 351 are fixedly connected with screw rods 352, the screw rods 352 are connected with moving sliders 353 slidably connected to the rectangular base 33 through threads, clamping blocks 354 slidably connected to the rectangular base 33 and capable of clamping the transformer housing 4 are mounted at the upper ends of the moving sliders 353, a plurality of hook-shaped clamping plates 356 capable of being attached to the cooling fin connecting pipes 355 are uniformly arranged at the front and rear sides of the upper end of the rectangular base 33, the plurality of hook-shaped clamping plates 356 located at the same side are connected through a first rotating shaft 357, the left and right sides of the first rotating shaft 357 are mounted on the rectangular base 33 through bearing blocks, annular sleeves 359 are sleeved corresponding to the clamping blocks 354, the annular sleeves 359 are connected with adjacent bearing blocks through torsion springs, a second rectangular slider 361 is connected to the annular sleeves 359, and the clamping blocks 354 are provided with rectangular top plates 362 attached to the second rectangular slider 361.
The transmission shaft 343 is driven to rotate by the motor 347, the transmission shaft 343 drives the idler wheel 344 to rotate through the cooperation of the gear 345 and the chain 346, the position of the transformer housing 4 can be adjusted manually, the lead screw 352 is driven to rotate by the double-shaft motor 351, the lead screw 352 drives the clamping block 354 to move towards the transformer housing 4 to clamp the transformer housing 4 through the moving slide block 353, meanwhile, the clamping block 354 drives the rectangular top plate 362 to be far away from the second rectangular slide block 361, the annular sleeve 359 drives the first rotating shaft 357 to rotate under the elastic force of the torsion spring, the first rotating shaft 357 drives the hook-shaped clamping plate 356 to rotate towards the radiating fin connecting pipe 355, the idler wheel mechanism 34 can assist in adjusting the strength testing device 7 of the transformer housing 4 and the radiating fin 6, time and labor can be saved during manual assembly and disassembly, the clamping mechanism 35 can assist in clamping the radiating fin 6 through the hook-shaped clamping plate 356 arranged on the side, and the influence on testing results caused by unstable clamping of the transformer housing 4 and the radiating fin 6 during testing is avoided. When the torsion spring is in a natural extension state, the hook-shaped clamp 356 is positioned as shown in fig. 7, and when the clamping block 354 is in the original position, that is, the transformer housing 4 is not clamped, the rectangular top plate 362 generates a pushing force on the second rectangular slider 361 in a direction away from the transformer housing 4, and the hook-shaped clamp 356 is positioned horizontally between the first rotating shaft 357 and the clamping block 354.
Referring to fig. 2-6, 14 and 15, the fin striking mechanism 73 includes a first rectangular sliding plate 731 slidably penetrating through the middle of the plurality of rectangular rubber top blocks 729 on the same side, a second motor 732 connected to the first rectangular supporting plate 71 through a motor base is installed on two sides of the first rectangular supporting plate 71, a second cam 733 connected to an output shaft of the second motor 732 is provided on two sides of the first rectangular sliding plate 731 in a rolling manner, a rectangular groove 734 is provided inside the rectangular rubber top block 729, a rectangular pushing plate 738 fixedly connected to the first rectangular sliding plate 731 is provided in the rectangular groove 734 in a sliding manner, a second rectangular sliding plate 736 connected to the rectangular pushing plate 738 through a second compression spring 735 is slidably installed on two sides of the rectangular rubber top block 729, and a plurality of rubber semicircular top blocks 737 are uniformly provided on one end of the second rectangular sliding plate 736 far from the rectangular groove 734.
The hydraulic cylinder 23 drives the rectangular connecting block 24 to move downwards, the rectangular connecting block 24 drives the second rectangular supporting plate 724 and the rectangular sleeve plate 29 to move downwards through the rectangular connecting rod 26, the second rectangular supporting plate 724 drives the first rectangular connecting plate 722 and the second rectangular connecting plate 723 to move downwards, meanwhile, the rectangular sleeve plate 29 drives the first rectangular supporting plate 71 and the rectangular rubber top block 729 to move downwards through the sliding rod 27, after the first rectangular supporting plate 71 and the rectangular rubber top block 729 move to the positions corresponding to the radiating fins 6, the first rectangular supporting plate 71 drives the first cam 726 to continuously rotate, the first rectangular supporting plate 71 drives the rectangular rubber top block 729 to repeatedly strike the radiating fins 6 through the first motor 725, after the strength test of the rectangular rubber top block 729 on the transformer housing 4 is finished, the second cam 733 is driven to rotate through the second motor 732, the second cam 733 jointly drives the first rectangular sliding plate 731 to reciprocate in the first rectangular supporting plate 71, the first rectangular sliding plate 731 is driven by the first rectangular sliding plate to reciprocate towards the radiating fins 6, the strength test device 7 can carry out the impact test on the transformer housing 4 and the radiating fins 6 in different directions, the impact resistance of the radiating fins 6 can also be tested on the radiating fins 6, and the impact resistance of the radiator housing 6 can be tested on the different thickness and the impact resistance of the radiator housing 6 can also be suitable for the impact resistance situation 6.
Referring to fig. 5, 6 and 12, the seal detecting device 5 includes a heavy pressing plate 51 mounted at the lower ends of the two rectangular connecting blocks 24, an air pump 52 is disposed at the upper end of the heavy pressing plate 51 corresponding to the first circular through hole 21, a rectangular cavity 53 communicating with the air pump 52 is disposed in the heavy pressing plate 51, a second circular through hole 55 penetrating through the heavy pressing plate 51 is disposed at the lower end of the rectangular cavity 53 corresponding to the circular hole 54 of the mounting sleeve at the upper end of the transformer housing 4, and a rectangular sealing plate 56 capable of adhering to the transformer housing 4 is mounted at the lower end of the heavy pressing plate 51.
When the strength test is carried out, the hydraulic cylinder 23 drives the heavy pressing plate 51 to move to the upper end of the transformer housing 4 through the rectangular connecting block 24, compressed air is transported to the rectangular cavity 53 through the air pump 52, the rectangular cavity 53 transports the compressed air into the circular hole 54 of the mounting sleeve at the upper end of the transformer housing 4 through the second circular through hole 55, after pressure maintaining is carried out for a period of time, whether the pressure inside the transformer housing 4 changes is detected through the external pressure gauge, so that whether the micro cracks exist on the transformer housing 4 and the radiating fins 6 is judged, meanwhile, whether cracks and deformation exist or not is combined with naked eyes, whether the impact strength of the transformer housing 4 is qualified is judged, after the sealing detection is finished, the operation is repeated, the strength detection device is moved to a position where the transformer housing 4 is transported enough, whether the next transformer housing 4 to be tested is replaced manually, the sealing detection device 5 can detect whether the welding seam and the connecting position of the transformer housing 4 and the radiating fins 6 after the strength test are leaked, and meanwhile, the auxiliary strength test can be carried out on the upper end of the transformer housing 4 by the aid strength test device 7 in cooperation with the strength test device, and the problem that the strength test is incomplete is avoided.
In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc., are based on those shown in the drawings, are merely for convenience of describing the embodiments of the present application and for simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The embodiments of the present application are all preferred embodiments of the present application, and are not limited in scope by the present application, so that all equivalent changes according to the structure, shape and principle of the present application are covered in the scope of the present application.
Claims (8)
1. The utility model provides a transformer shell intensity shock-resistant test system, accomplishes through the cooperation of transformer shell intensity shock-resistant test equipment, its characterized in that, transformer shell intensity shock-resistant test equipment include braced frame (1), hydraulic lifting device (2) are installed to braced frame (1) upper end, test platform device (3) are installed to braced frame (1) inner lower extreme, transformer shell (4) have been placed to test platform device (3) upper end, seal detection device (5) are installed to hydraulic lifting device (2) lower extreme, install intensity testing arrangement (7) with fin (6) one-to-one around transformer shell (4); wherein:
the strength testing device (7) comprises four rectangular support plates (71) which are arranged on the outer sides of the radiating fins (6) and connected with the hydraulic lifting device (2), a shell impact mechanism (72) is arranged on one side, far away from the radiating fins (6), of each rectangular support plate (71), and radiating fin impact mechanisms (73) are arranged on two sides of the radiating fins (6) of each rectangular support plate (71).
2. The transformer enclosure strength impact test system of claim 1, wherein: the shell striking mechanism (72) comprises a first rectangular chute (721) formed in four rectangular upright posts of a supporting frame (1), a first rectangular connecting plate (722) is mounted on the first rectangular chute (721) in a sliding mode, a second rectangular connecting plate (723) which is connected with the rectangular upright posts in a sliding mode is mounted on the front side and the rear side of the first rectangular connecting plate (722), a second rectangular supporting plate (724) which is wider than the first rectangular supporting plate (71) is mounted at the upper end of the first rectangular connecting plate (722) and the upper end of the second rectangular connecting plate (723), a first motor (725) is mounted on one end, close to a radiating fin (6), of the second rectangular connecting plate (723) through a motor base, a first cam (726) fixedly connected to an output shaft of the first motor (725) is arranged between the first rectangular supporting plate (71) and the second rectangular supporting plate (724), a first rectangular through hole (727) which is formed by the first cam (726) and is capable of rotating is formed in the second rectangular supporting plate (724), and a plurality of rectangular supporting plates (724) are connected with a plurality of rectangular supporting plates (729) through a plurality of compression springs, and a plurality of cavities (729) are mounted on the second rectangular supporting plate (724) through the first rectangular supporting plate (724).
3. The transformer enclosure strength impact test system of claim 1, wherein: the radiator impact mechanism (73) comprises a first rectangular sliding plate (731) which penetrates through the middle of a plurality of same-side rectangular rubber ejector blocks (729) in a sliding mode, a second motor (732) which is connected to the first rectangular sliding plate (71) through a motor base is arranged on two sides of the first rectangular sliding plate (71), a second cam (733) which is connected to an output shaft of the second motor (732) is arranged on two sides of the first rectangular sliding plate (731) in a rolling mode, rectangular grooves (734) are formed in the rectangular rubber ejector blocks (729) in an inner sliding mode, rectangular pushing plates (738) which are fixedly connected to the first rectangular sliding plate (731) are arranged on two sides of the rectangular rubber ejector blocks (729) in a sliding mode, a second rectangular sliding plate (736) which is connected to the rectangular pushing plates (738) through a second compression spring (735) is arranged on two sides of the rectangular sliding plate (736), and a plurality of rubber semicircular ejector blocks (737) are uniformly arranged at one end, far away from the rectangular grooves (734).
4. A transformer enclosure strength impact test system according to claim 3, wherein: the hydraulic lifting device (2) comprises a first round through hole (21) formed in the middle of the upper end of a supporting frame (1), a plurality of runway-shaped sliding grooves (22) are uniformly formed in the upper end of the supporting frame (1) corresponding to a first rectangular supporting plate (71), four hydraulic cylinders (23) are arranged in the upper end of the supporting frame (1) corresponding to a transformer shell (4), rectangular connecting blocks (24) are jointly mounted at the lower ends of the telescopic ends of the two hydraulic cylinders (23) which are opposite front and back, two rectangular connecting blocks (24) corresponding to a first rectangular supporting plate (71) and a second rectangular supporting plate (724) on the left side and the right side are respectively provided with two rectangular telescopic rods (25) and two rectangular connecting rods (26), one rectangular telescopic rod (25) and one rectangular connecting rod (26) are respectively mounted on the first rectangular supporting plate (71) on the front side and the rear side, a plurality of sliding rods (27) which are connected with the runway-shaped sliding grooves (22) are uniformly mounted at the upper end of the first rectangular supporting plate (71), a synchronous plate (28) is sleeved at the upper end of the sliding rods (27) together, a plurality of rectangular telescopic plates (29) are fixedly sleeved at the lower ends of the same rectangular supporting plates (29), and two sides of the rectangular sleeve plate (29) are connected in a second rectangular chute (31) formed by the rectangular connecting rod (26) in a sliding way through a first rectangular sliding block (30).
5. The transformer enclosure strength impact test system of claim 4, wherein: the testing platform device (3) comprises a rectangular supporting seat (32) arranged at the inner lower end of the supporting frame (1), a rectangular base (33) is arranged at the upper end of the rectangular supporting seat (32), a roller mechanism (34) is arranged in the rectangular base (33), and clamping mechanisms (35) are arranged at the left end and the right end of the rectangular base (33).
6. The transformer enclosure strength impact test system of claim 5, wherein: the roller mechanism (34) comprises a second rectangular through hole (341) formed in the front side of the rectangular base (33), a plurality of third rectangular through holes (342) are symmetrically and evenly formed in the middle of the rectangular base (33), a plurality of transmission shafts (343) corresponding to the third rectangular through holes (342) in one-to-one mode are rotatably mounted in the second rectangular through holes (341), rollers (344) sleeved on the transmission shafts (343) are rotatably mounted in the third rectangular through holes (342), the transmission shafts (343) located in the second rectangular through holes (341) are connected with a chain (346) in a matched mode through gears (345), and the front end of the transmission shaft (343) located on the leftmost side penetrates through the rectangular base (33) and is connected with an output shaft of a third motor (347) mounted at the front end of the rectangular base (33) through a motor base.
7. The transformer enclosure strength impact test system of claim 6, wherein: clamping mechanism (35) are including rectangular base (33) left and right sides both ends middle part through motor cabinet connection in biax motor (351) of rectangular base (33), two output shaft fixedly connected with lead screw (352) of biax motor (351), lead screw (352) have sliding connection in removal slider (353) of rectangular base (33) through threaded connection, remove slider (353) upper end and install sliding connection in rectangular base (33) and clamping block (354) that can centre gripping transformer shell (4), both sides evenly are provided with crotch form splint (356) of a plurality of laminating fin connecting pipes (355) around rectangular base (33) upper end, a plurality of crotch form splint (356) that are located same side are connected through axis of rotation (357), axis of rotation (357) left and right sides is installed on rectangular base (33) through the bearing frame, annular sleeve (359) are equipped with corresponding clamping block (354) cover in both sides about axis of rotation (357), annular sleeve (359) are connected through torsional spring rotation with adjacent bearing frame, connect right rectangle slider (361) on annular sleeve (359), rectangular slider (361) are provided with rectangle slider (361) in two laminating.
8. A transformer enclosure strength impact test system according to claim 3, wherein: the sealing detection device (5) comprises a heavy pressing plate (51) which is jointly installed at the lower ends of two rectangular connecting blocks (24), an air pump (52) is arranged at the upper end of the heavy pressing plate (51) corresponding to a first circular through hole (21), a rectangular cavity (53) which is communicated with the air pump (52) is formed in the heavy pressing plate (51), a second circular through hole (55) which penetrates through the heavy pressing plate (51) is formed in a circular hole (54) which is arranged at the lower end of the rectangular cavity (53) corresponding to the upper end of the transformer housing (4), and a rectangular sealing plate (56) which can be attached to the transformer housing (4) is installed at the lower end of the heavy pressing plate (51).
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| CN202311262798.2A CN117054259B (en) | 2023-09-27 | 2023-09-27 | Impact-resistant testing system for strength of transformer shell |
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| CN202311262798.2A CN117054259B (en) | 2023-09-27 | 2023-09-27 | Impact-resistant testing system for strength of transformer shell |
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| CN117054259B CN117054259B (en) | 2024-03-22 |
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Cited By (1)
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| CN117367990A (en) * | 2023-12-08 | 2024-01-09 | 泰鸣电气设备(天津)有限公司 | Explosion-proof block terminal intensity performance detection device |
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| CN117054259B (en) | 2024-03-22 |
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