Disc-type pin insulator impact test device
By designing an impact test device suitable for disc-type pin insulators and using a hydraulic system and an impact device to provide adjustable impact energy, the difficulties of standard expansion and test item integrity verification in the existing technology are solved, and rapid testing of insulators of multiple specifications and models is achieved.
Patent Information
- Application Number
- CN202510230557.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-09-05
AI Technical Summary
Existing technologies are unable to meet the requirements of the IEC60383-1:2023 standard for the impact test of disc-type pin insulators, especially the need to provide adjustable impact energy and tensile load, which makes it difficult to expand the standard items of laboratory equipment and verify the integrity of test items.
An impact test device for disc-type pin insulators was designed. It uses a hydraulic system to provide tensile load and an impact device to provide adjustable impact energy. Combined with a locking assembly and a pendulum adjustment release device, it simulates the rated impact environment of the insulator in the working state and adapts to the test requirements of various specifications and models.
It realizes the rapid detection of multiple specifications and multiple models of disc-type pin insulators, meets the standard requirements, has a simple structure and intensive functions, adapts to the detection needs of large quantities and multiple models, and solves the problems of standard expansion and test item integrity verification of laboratory equipment.
Smart Images
Figure CN120594009A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of testing and detection, in particular to a testing device for a disc-type pin insulator subjected to rated impact in a normal stress-bearing working state. Background Art
[0002] Due to the revision of the IEC60383-1:2023 standard, an impact test for disc-type pin insulators has been added. This test stipulates that the disc-type pin insulator should be installed on the specified test equipment, with its metal accessories connected to the test equipment connector. The specified tensile load is applied, and the impact energy strikes the outer edge of the shell in a direction parallel to the insulator axis. The test result is considered to meet the requirements if the insulator does not crack. To expand the standard and verify the integrity of the test items, laboratories and manufacturers need to purchase or develop disc-type pin insulator impact test equipment, and the test equipment must meet the requirements of the standard. Summary of the Invention
[0003] The present invention aims to address the testing requirements set forth in the standard by developing a complete testing device that provides a mounting structure for disc-type pin insulators. This device utilizes a hydraulic system to apply a true tensile load to the disc-type pin insulators, and incorporates an impact device to provide adjustable impact energy. This device simulates the test environment in which a disc-type pin insulator specimen is subjected to rated impact energy in operation, allowing for impact testing of the disc-type pin insulator. Furthermore, the device can provide tensile loads of 10 kN or less and impact energies of 10 Nm or less, meeting the requirements for impact testing of disc-type pin insulators of various specifications and models.
[0004] To achieve the above-mentioned purpose, the present invention has developed a test device for effectively completing the impact test of disc-type pin insulators, and adopts the following technical solutions; A disc-type pin insulator impact test device is characterized in that the test device mainly includes the following main contents: The test device includes a mounting bracket, a hydraulic tension system is provided at the bottom of the mounting bracket, the hydraulic tension system is provided with a valve control assembly for controlling the oil hydraulic cylinder, the oil hydraulic cylinder and the disc-type pin insulator are connected through a digital dynamometer, a safety net is provided between the valve control assembly and the disc-type pin insulator, an impact device is provided in the middle of the mounting bracket, the impact device is fixed on the support plate, a locking assembly for adjusting the height is provided at the connection between the support plate and the mounting bracket, the impact device is provided with a pendulum that can indicate the rotation angle, a pendulum adjustment and release device is provided at the top of the mounting bracket, the pendulum adjustment and release device is provided with an electromagnet, and the electromagnet is connected to a hand-cranked winch by a cotton rope.
[0005] The hydraulic tension system includes a hydraulic pump station arranged at the lower part of the mounting bracket, a valve control component is fixedly connected to the hydraulic pump station, a nut fixes an anchor bolt on one side of the mounting bracket, the other side of the anchor bolt is connected to the disc-type pin insulator, the other side of the disc-type pin insulator is connected to the first connecting piece, the other side of the first connecting piece is connected to the digital display tension gauge, the other side of the digital display tension gauge is connected to the second connecting piece, the other side of the second connecting piece is connected to the oil hydraulic cylinder, and the oil hydraulic cylinder is fixed to the other side of the mounting bracket.
[0006] The impact device includes two sleeves fixed on the support plate, a sleeve arc surface fixes a 90° dial, a knurled nut clamps the sleeve and fixes it in the support plate slot, the two sleeves clamp the rotating shaft, a rotating rod is installed in the center hole of the rotating shaft, a pointer is fixed on the rotating rod body, and a pendulum is fixed on the other end of the rotating rod.
[0007] The locking assembly includes a clamping plate for clamping the support plate, two bolts pass through the holes of the clamping plate, the bolts are fixed in the I-shaped holes of the mounting bracket, and the other side of the bolts is connected to a hand-tightening nut.
[0008] The pendulum adjustment and release device includes a hand-cranked winch fixed on the mounting bracket column, the hand-cranked winch fixes a cotton rope, the cotton rope passes through two fixed pulleys and a guide cylinder, and the other end of the cotton rope is fixed with an electromagnet, which is magnetically attracted to the pendulum.
[0009] The present invention can produce the following beneficial effects: This experimental device utilizes a hydraulic system to provide the required tensile load for disc-type pin insulator specimens and an impact device to provide adjustable impact energy, simulating the test environment where disc-type pin insulator specimens are subjected to rated impact energy while in operation. This device can accommodate impact tests on a wide range of disc-type pin insulator specifications and models, addressing the equipment requirements for expanding laboratory standards and verifying the integrity of test items. In actual use, its simple structure, integrated functionality, and adjustable parameters have met the testing needs of large numbers of disc-type pin insulator specimens with rapid turnaround. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front schematic diagram of the present invention; Figure 3 This is a structural diagram of the hydraulic tension system of the present invention; Figure 4 This is a schematic structural diagram of the impact device of the present invention; Figure 5 This is a schematic diagram of the installation of the knurled nut and sleeve, and the sleeve and rotating shaft of the impact device of the present invention; Figure 6 This is a schematic structural diagram of the locking assembly of the present invention; Figure 7 This is a schematic diagram of the installation of the locking assembly support plate of the present invention; Figure 8 This is a schematic structural diagram of the pendulum regulating and releasing device of the present invention; Explanation of the numbers in the figure: 11. Mounting bracket, 12. Safety net, 13. Tightening nut, 14. Support plate, 15. Clamp, 16. Bolt, 21. Hydraulic pump station, 22. Valve control assembly, 23. Nut, 24. Anchor bolt, 25. Disc-type pin insulator, 26. First connecting piece, 27. Digital dynamometer, 28. Second connecting piece, 29. Hydraulic cylinder, 31. Knurled nut, 32. Bushing, 33. Rotating shaft, 34. Rotating rod, 35. Pendulum, 36. Pointer, 37. 90° dial, 41. Electromagnet, 42. Guide cylinder, 43. Cotton rope, 44. Fixed pulley, 45. Hand-cranked capstan. DETAILED DESCRIPTION
[0011] The present invention is further described in detail below with reference to specific embodiments and accompanying drawings. This description is intended to explain, not to limit, the present invention. Those skilled in the art will readily understand the functions and advantages of the present invention from the disclosure herein. The present invention may also be implemented or applied to other different disc-type pin insulators.
[0012] The object of this embodiment is a disc pin insulator (SFL=160kN), the tensile load required for the test is 9000N, and the impact energy required for the test is 10Nm. Figures 1-8 As shown, a disc-type pin insulator impact test device includes a mounting bracket 11, a hydraulic tension system is provided at the bottom of the mounting bracket 11, the hydraulic tension system is provided with a valve control component 22 for controlling an oil hydraulic cylinder 29, the oil hydraulic cylinder 29 is connected to the disc-type pin insulator 25 through a digital dynamometer 27, a safety net 12 is provided between the valve control component 22 and the disc-type pin insulator 25, an impact device is provided in the middle of the mounting bracket 11, the impact device is fixed on a support plate 14, a locking component for adjusting the height is provided at the connection between the support plate 14 and the mounting bracket 11, the impact device is provided with a pendulum 35 that can indicate the rotation angle, a pendulum 35 adjustment and release device is provided at the top of the mounting bracket 11, the pendulum 35 adjustment and release device is provided with an electromagnet 41, and the electromagnet 41 is connected to a hand-cranked winch 45 by a cotton rope 43. During the test, the hydraulic cylinder 29 is stretched through the hydraulic tension system to provide a tensile load for the disc-type pin insulator 25, the angle α between the impact device rotating rod 34 and the vertical state is adjusted to provide impact energy to the disc-type pin insulator 25, the height of the locking assembly hand tightening nut 13 is adjusted to fix the rotating shaft 33, and the release device electromagnet 41 is adjusted by controlling the pendulum 35 to control the angle of the impact device and the release of the pendulum 35.
[0013] The hydraulic tensioning system includes a hydraulic pump station 21 disposed below the mounting bracket 11. A valve control assembly 22 is fixedly connected to the hydraulic pump station 21. A nut 23 secures an anchor bolt 24 to one side of the mounting bracket 11. The other side of the anchor bolt 24 is connected to a disc-type pin insulator 25, which is connected to a first connector 26. The other side of the first connector 26 is connected to a digital force gauge 27, which is connected to a second connector 28. The other side of the second connector 28 is connected to a hydraulic cylinder 29, which is fixed to the other side of the mounting bracket 11. During testing, the length of the anchor bolt 24 thread is adjusted using the nut 23 so that the pendulum 35 hammerhead is flush with the outer edge of the disc-type pin insulator 25 when the outer edge is perpendicular to the rotating rod 34. Start the hydraulic pump station 21, set the parameters of the valve control component 22, and slowly pull the disc-type pin insulator 25 with the hydraulic cylinder 29 until 9000N is displayed on the digital dynamometer 27, then stop pulling and maintain the pulling force.
[0014] The impact device comprises two sleeves 32 fixed to the support plate 14. A 90° scale 37 is fixed to the arc surface of one sleeve 32. A knurled nut 31 clamps the sleeve 32 and secures it within a slot on the support plate 14. The two sleeves 32 clamp around a rotating shaft 33. A rotating rod 34 is mounted in the center hole of the rotating shaft 33. A pointer 36 is fixed to the shaft of the rotating rod 34, and a pendulum 35 is fixed to the other end of the rotating rod 34. During the test, the required impact energy for the disc-type pin insulator 25 was 10 Nm. The calculated angle α between the rotating rod 34 and the vertical position was 90°.
[0015] The locking assembly includes a clamping plate 15 for clamping the support plate 14. Two bolts 16 extend through the holes in the clamping plate 15. Bolts 16 are secured within the I-shaped holes in the mounting bracket 11. The other side of bolts 16 is connected to a hand-tightening nut 13. During testing, the mounting height of the support plate 14 is adjusted so that the height between the rotating shaft 33 and the edge of the disc-type pin insulator 25 test piece's housing is 1 meter. Bolts 16 are tightened with hand-tightening nuts 13 to secure the clamping plate 15 and the support plate 14 to the mounting bracket 11.
[0016] The pendulum 35 adjustment and release mechanism includes a hand-cranked capstan 45 fixed to the column of the mounting bracket 11. Hand-cranked capstan 45 secures a cotton rope 43, which passes through two fixed pulleys 44 and a guide cylinder 42. The other end of cotton rope 43 is secured to an electromagnet 41, which magnetically attracts the pendulum 35. During testing, electromagnet 41 is energized to attract the pendulum 35. Hand-cranked capstan 45 is cranked to tighten the cotton rope 43. When pointer 36 points to the 90° dial 37 at a 90° angle, the cranking is stopped, hand-cranked capstan 45 is locked, and electromagnet 41 is de-energized, releasing the pendulum 35 to strike the outer edge of the disc-type pin insulator 25.
[0017] Finally, the tensile load on the disc-type pin insulator 25 is released, and the disc-type pin insulator 25 is checked to see whether the insulator is broken, so as to determine whether the disc-type pin insulator 25 meets the standard requirements.
[0018] The above embodiments are merely illustrative of the principles and functions of the present invention and are not intended to limit the present invention. Any person skilled in the art may make reasonable modifications and variations to the above embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of all rights of the present invention shall be based on the scope of the claims.
Claims
1. A disc-type pin insulator impact test device, comprising a mounting bracket (11), a hydraulic tension system is provided at the bottom of the mounting bracket (11), the hydraulic tension system is provided with a valve control assembly (22) for controlling an oil hydraulic cylinder (29), the oil hydraulic cylinder (29) and the disc-type pin insulator (25) are connected via a digital display tension gauge (27), a safety net (12) is provided between the valve control assembly (22) and the disc-type pin insulator (25), an impact device is provided in the middle of the mounting bracket (11), the impact device is fixed on a support plate (14), a locking assembly for adjusting the height is provided at the connection between the support plate (14) and the mounting bracket (11), the impact device is provided with a pendulum (35) that can indicate the rotation angle, a pendulum (35) adjustment and release device is provided at the top of the mounting bracket (11), the pendulum (35) adjustment and release device is provided with an electromagnet (41), and the electromagnet (41) is connected to a hand-cranked winch (45) by a cotton rope (43).
2. The disc-type pin insulator impact test device according to claim 1, characterized in that: The hydraulic tension system includes a hydraulic pump station (21) arranged at the bottom of the mounting bracket (11), a valve control component (22) is fixedly connected to the hydraulic pump station (21), a nut (23) fixes an anchor bolt (24) on one side of the mounting bracket (11), the other side of the anchor bolt (24) is connected to a disc-shaped pin insulator (25), the other side of the disc-shaped pin insulator (25) is connected to a first connecting member (26), the other side of the first connecting member (26) is connected to a digital display tension gauge (27), the other side of the digital display tension gauge (27) is connected to a second connecting member (28), the other side of the second connecting member (28) is connected to a hydraulic cylinder (29), and the hydraulic cylinder (29) is fixed to the other side of the mounting bracket (11).
3. The disc-type pin insulator impact test device according to claim 1, characterized in that: The impact device comprises two shaft sleeves (32) fixed on the support plate (14), a 90° scale plate (37) is fixed on the arc surface of one shaft sleeve (32), a knurled nut (31) clamps the shaft sleeve (32) and is fixed in a slot of the support plate (14), the two shaft sleeves (32) clamp a rotating shaft (33), a rotating rod (34) is installed in the center hole of the rotating shaft (33), a pointer (36) is fixed on the shaft of the rotating rod (34), and a pendulum (35) is fixed on the other end of the rotating rod (34).
4. The disc-type pin insulator impact test device according to claim 1, characterized in that: The locking assembly includes a clamping plate (15) for clamping the support plate (14), two bolts (16) pass through the hole of the clamping plate (15), the bolts (16) are fixed in the I-shaped holes of the mounting bracket (11), and the other side of the bolts (16) is connected to the hand-tightening nut (13).
5. The disc-type pin insulator impact test device according to claim 1, characterized in that: The pendulum (35) regulating and releasing device comprises a hand-cranked winch (45) fixed on a column of the mounting bracket (11), a cotton rope (43) fixed to the hand-cranked winch (45), the cotton rope (43) passing through two fixed pulleys (44) and a guide cylinder (42), and an electromagnet (41) fixed to the other end of the cotton rope (43), and the electromagnet (41) is magnetically attracted to the pendulum (35).