A pole-mounted transformer platform complete set

Abstract

The application relates to the technical field of pole-mounted transformers, and discloses a pole-mounted transformer platform complete equipment which comprises a transformer body and a support frame, the transformer body is arranged on the support frame, mounting bolts are arranged on the support frame, the mounting bolts are used for realizing the relative fixation of the support frame and a mounting frame, the mounting bolts comprise mounting heads and mounting strips, the mounting heads are integrally formed at the mounting strips, annular grooves are arranged on the mounting strips, disc springs are arranged in the annular grooves, moving grooves are arranged on the surfaces of the mounting heads, the moving grooves are communicated with the annular grooves, display strips are arranged in the moving grooves, the display strips are used for protruding from the mounting heads, and the disc springs are used for limiting the movement of the display strips in the moving grooves; when the mounting bolts are loose, the disc springs can protrude from the annular grooves, and the display strips can protrude from the moving grooves; when the bolts are loose and the pre-tightening force decreases, the disc springs pressed tightly protrude from the annular grooves, and then the display strips are ejected from the surfaces of the mounting heads. The loosening state of the bolts can be quickly judged by observing whether the display strips protrude or not on the ground.

Description

Technical Field

[0001] This application relates to the technical field of pole-mounted transformers, and in particular to a complete set of pole-mounted transformer equipment. Background Technology

[0002] A pole-mounted transformer set is a complete set of power distribution equipment installed on an outdoor utility pole (usually between two poles). It takes the distribution transformer as the core equipment and integrates low-voltage integrated distribution box (JP cabinet), drop-out fuse, surge arrester, hardware, iron accessories, high and low voltage wires and cables, etc., into a whole.

[0003] In the relevant technology, the pole-mounted transformer includes a transformer body and a support frame. The transformer body is installed on the support frame by bolts. Two mounting brackets are fixedly connected between the two poles, and the support frame is fixedly connected to the mounting brackets by bolts.

[0004] Because the entire equipment is located at a high altitude, the limited working space and difficulty in applying force during installation often make it difficult to reliably tighten all bolts to the rated torque, resulting in insufficient initial preload. During long-term outdoor operation, repeated exposure to wind-induced vibrations, electromagnetic vibrations caused by load changes, and thermal expansion and contraction due to day-night and seasonal temperature differences easily causes bolts to loosen or even fall off. To ensure equipment safety, current methods primarily rely on maintenance personnel periodically climbing to manually inspect and retighten a large number of bolts. This inspection method is not only extremely inefficient and labor-intensive, but also carries a high risk of falls due to working at height. Summary of the Invention

[0005] To address the issue of inconvenient bolt inspection for looseness, this application provides a complete set of equipment for a pole-mounted transformer platform.

[0006] This application provides a complete set of pole-mounted transformer equipment, which adopts the following technical solution: A complete set of pole-mounted transformer platform equipment includes a transformer body and a support frame. The transformer body is mounted on the support frame, and the support frame is provided with mounting bolts for fixing the support frame and the mounting frame. Each mounting bolt includes a mounting head and a mounting strip. The mounting head is integrally formed at the mounting strip, and the mounting strip has an annular groove. A disc spring is provided in the annular groove. A movable groove is provided on the surface of the mounting head, and the movable groove communicates with the annular groove. A display strip is provided in the movable groove, and the display strip is used to protrude from the mounting head. The disc spring is used to restrict the movement of the display strip within the movable groove. When the mounting bolt is loosened, the disc spring can protrude from the annular groove, and the display strip can protrude from the movable groove.

[0007] By adopting the above technical solution, when bolts loosen due to wind-induced vibration, thermal expansion and contraction, or other factors, and the preload decreases, the compressed disc spring automatically springs up and protrudes from the annular groove, causing the indicator bar to emerge from the mounting head surface. Maintenance personnel can quickly and intuitively determine the bolt's looseness by observing whether the indicator bar protrudes from the ground, eliminating the need for manual inspection and retightening of numerous bolts at height. This fundamentally solves the technical problems of low efficiency, high labor intensity, and fall risk associated with high-altitude inspections in existing technologies, significantly improving the safety and efficiency of maintenance of pole-mounted transformer substation equipment.

[0008] Optionally, a mounting sleeve is fitted onto the mounting bolt, and the mounting sleeve is fitted onto the outside of the disc spring; when the mounting bolt is threaded into the threaded groove, the mounting sleeve is located between the mounting head and the mounting bracket.

[0009] By adopting the above technical solution, by adding an installation sleeve to the outside of the disc spring and clamping the installation sleeve between the mounting head and the mounting bracket when the bolts are tightened, on the one hand, the installation sleeve provides circumferential shielding and protection for the disc spring, preventing external dust, rainwater, foreign objects and other objects from entering the ring groove, avoiding the disc spring from failing due to jamming, and ensuring the long-term reliability of the loosening indicator; on the other hand, the installation sleeve can also pre-compress and limit the disc spring during the installation process, which helps to assemble it in place.

[0010] Optionally, the mounting sleeve is provided with a fixing gasket, which is used to abut against the mounting head and the mounting bracket. The outer diameter of the mounting sleeve gradually decreases along the direction from the mounting head to the mounting strip, and the inner diameter of the fixing gasket is smaller than the outer diameter of the mounting sleeve facing the mounting head.

[0011] By adopting the above technical solution, the fixing shim can unidirectionally lock the mounting sleeve, effectively preventing the mounting sleeve from coming off or shifting outward in a long-term vibration environment, and further improving the assembly stability and vibration resistance of the loosening indicator mechanism.

[0012] Optionally, an anode sleeve is provided on the inner wall of the mounting sleeve, and the anode sleeve abuts against the outer diameter of the mounting strip.

[0013] By adopting the above technical solution, an anode sleeve that abuts against the outer diameter of the mounting strip is set on the inner wall of the mounting sleeve. Utilizing the cathodic protection principle of sacrificial anodes, the corrosive medium preferentially consumes the anode sleeve, thereby effectively delaying the corrosion of the mounting strip (screw) and surrounding metal parts, and significantly improving the weather resistance and service life of the mounting bolts in harsh outdoor environments.

[0014] Optionally, the anode sleeve covers the outer surface of the annular groove; when the anode sleeve is consumed, the disc spring can protrude from the annular groove.

[0015] By adopting the above technical solution, the anode sleeve initially blocks the outer surface of the annular groove, limiting the ejection path of the disc spring. This design achieves a dual indication function: in the initial stage of equipment commissioning, even if the bolt preload decreases slightly, the indicator bar will not pop out falsely, avoiding false alarms during installation; only after long-term outdoor operation, when the anode sleeve is corroded to a certain extent and disappears, will the disc spring be ready to eject. Thus, it not only uses anode wear to indicate that the equipment has reached a state requiring close monitoring, but also accurately indicates bolt loosening thereafter, achieving proactive early warning based on corrosion life.

[0016] Optionally, the mounting head has a mounting groove on its surface facing the mounting strip, and one end of the mounting sleeve is inserted into the mounting groove.

[0017] By adopting the above technical solution, the mounting groove on the mounting head provides accurate insertion and positioning for the mounting sleeve. During assembly, one end of the mounting sleeve can be directly inserted into the mounting groove, ensuring the coaxiality and axial positional accuracy of the mounting sleeve and the bolt. This allows the anode sleeve to accurately cover the annular groove and reliably abut against the mounting strip, improving the convenience and accuracy of component assembly.

[0018] Optionally, the display strip includes a display section and a deformable section. The deformable section is disposed on one end of the display section and has elastic deformation capability. The deformable section is located in the moving groove and the annular groove. The outer diameter of the deformable section away from the annular groove is smaller than the outer diameter of the deformable section near the annular groove. When the disc spring protrudes from the annular groove, the deformable section resets to allow the display section to protrude from the mounting head.

[0019] By adopting the above technical solution, the display bar is designed as a separate structure with a deformable part and a display part that have elastic deformation capabilities, and the outer diameter of the deformable part is larger on the annular groove side. After assembly, the deformable part is elastically compressed between the moving groove and the annular groove, forming a reliable anti-detachment buckling structure. When the disc spring protrudes, the deformable part returns to its original position due to its own elasticity, causing the display part to pop out stably and forcefully from the mounting head surface, which not only ensures reliable indication of looseness but also prevents the display bar from accidentally falling off during vibration.

[0020] Optionally, the outer wall of the display unit is provided with reflective patterns; when the display unit protrudes from the mounting head, the reflective patterns are exposed.

[0021] By adopting the above technical solution, reflective patterns are set on the outer wall of the display unit. When the display unit protrudes from the mounting head due to loose bolts, the reflective patterns are exposed. Inspection personnel can obtain a conspicuous reflective indication by using flashlights, searchlights, or even sunlight, which greatly improves the visibility under adverse visual conditions such as long distance, low light, or nighttime, and further enhances the convenience and accuracy of ground inspections.

[0022] In summary, this application includes at least one of the following beneficial technical effects: When bolts loosen due to wind-induced vibration, thermal expansion and contraction, or other factors, and the preload decreases, the compressed disc spring automatically springs up and protrudes from the annular groove, causing the indicator bar to emerge from the mounting head surface. Maintenance personnel can quickly and intuitively determine the bolt's looseness from the ground by observing whether the indicator bar protrudes, eliminating the need for manual inspection and retightening of numerous bolts at height. This fundamentally solves the technical problems of low efficiency, high labor intensity, and fall risk associated with high-altitude inspections in existing technologies, significantly improving the safety and efficiency of maintenance for pole-mounted transformer substations.

[0023] In its initial state, the anode sleeve covers the outer surface of the annular groove, restricting the ejection path of the disc spring. This design achieves a dual indication function: in the early stages of equipment commissioning, even if there is a slight decrease in bolt preload, the indicator bar will not pop out falsely, avoiding false alarms during installation; only after long-term outdoor operation, when the anode sleeve is corroded to a certain extent and disappears, will the disc spring be ready to eject. Thus, it uses anode wear to indicate that the equipment has reached a state requiring close monitoring, and can also accurately indicate bolt loosening thereafter, achieving proactive early warning based on corrosion life. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 It is along Figure 1 Sectional view of line AA in the middle; Figure 3 yes Figure 2 Enlarged schematic diagram of part B; Figure 4 This is an exploded view of the disc spring in an embodiment of this application; Figure 5 This is an exploded view of the mounting sleeve in an embodiment of this application.

[0025] Reference numerals in the attached drawings: 1. Transformer body; 11. Support frame; 2. Mounting bolt; 21. Mounting head; 211. Mounting groove; 22. Mounting strip; 23. Ring groove; 231. Moving groove; 24. Disc spring; 25. Display strip; 251. Display section; 252. Deformation section; 253. Reflective pattern; 26. Mounting sleeve; 261. Anode sleeve; 262. Mounting bevel; 27. Fixing shim. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0027] This embodiment discloses a complete set of equipment for a pole-mounted transformer platform. (Refer to...) Figure 1 and Figure 2 A complete set of pole-mounted transformer platform equipment includes a transformer body 1 and a support frame 11, wherein the transformer body 1 is mounted on the support frame 11. The support frame 11 is mounted on a mounting frame between two poles.

[0028] Reference Figure 3 The support frame 11 is provided with mounting bolts 2, and the support frame 11 is fixed to the mounting frame by the mounting bolts 2. The mounting bolt 2 includes a mounting head 21 and a mounting strip 22. The mounting strip 22 is integrally formed on the mounting head 21, and the outer surface of the mounting strip 22 is threaded.

[0029] Reference Figure 3 and Figure 4 An annular groove 23 is formed on the outer surface of the mounting strip 22, and the annular groove 23 extends circumferentially along the mounting strip 22. A movable groove 231 is formed on the end face of the mounting head 21 away from the mounting strip 22, and the movable groove 231 extends to the mounting strip 22 and communicates with the annular groove 23.

[0030] Reference Figure 4 A disc spring 24 is provided within the annular groove 23, and the disc spring 24 can deform to protrude from the annular groove 23. A display strip 25 is provided within the movable groove 231, and the display strip 25 can be inserted into the annular groove 23. The display strip 25 includes a display part 251 and a deformable part 252, which has elastic deformation capability and is fixedly connected to the end face of the display part 251. A plurality of reflective patterns 253 are fixedly connected to the outer surface of the display part 251, and the reflective patterns 253 extend along the length direction of the display part 251, and the plurality of reflective patterns 253 are distributed in a circumferential array along the display part 251. The outer diameter of the deformable part 252 near the display part 251 is smaller than the outer diameter of the deformable part 252 away from the display part 251, and the outer diameter of the deformable part 252 away from the display part 251 is larger than the inner diameter of the movable groove 231.

[0031] Reference Figure 4 The operator inserts the deformable part 252 from the moving groove 231 into the annular groove 23. At this time, part of the deformable part 252 is located in the moving groove 231, and the other part is located in the annular groove 23. The disc spring 24 abuts against the deformable part 252. When the bolt loosens, the annular groove 23 is not blocked, allowing the disc spring 24 to protrude from the annular groove 23. The disc spring 24 will not continue to abut against the deformable part 252, and the deformable part 252 can return to its original position, allowing it to move towards the opening of the moving groove 231. This allows the display part 251 to protrude from the mounting head 21, making it easier for maintenance personnel to observe the display part 251.

[0032] Reference Figure 3 and Figure 5A mounting sleeve 26 is fitted onto the mounting bolt 2, and the mounting sleeve 26 is fitted onto the outside of the disc spring 24. An anode sleeve 261 is fixedly connected to the inner wall of the mounting sleeve 26, and the anode sleeve 261 can abut against the disc spring 24. When the mounting sleeve 26 is fitted onto the mounting bolt 2, the anode sleeve 261 can abut against the mounting bolt 2, and the anode sleeve 261 can restrict the movement of the disc spring 24, so that the operator can tighten the mounting bolt 2.

[0033] Reference Figure 4 and Figure 5 When the mounting bolt 2 is corroded, the anode sleeve 261 can be consumed before the mounting bolt 2 through the sacrificial anode protection method. At this time, the disc spring 24 can protrude from the annular groove 23, so that the disc spring 24 will not restrict the deformation of the deformation part 252, and the display bar 25 can protrude from the mounting head 21, so that maintenance personnel can observe it in time.

[0034] Reference Figure 5 The outer surface of the mounting sleeve 26 has a mounting bevel 262, meaning the outer diameter of the mounting sleeve 26 gradually decreases from the mounting head 21 to the mounting strip 22. The end face of the mounting head 21 near the mounting strip 22 has a mounting groove 211 for inserting the mounting sleeve 26, extending circumferentially along the mounting strip 22. When the mounting sleeve 26 is inserted into the mounting groove 211, the anode sleeve 261 abuts against the disc spring 24.

[0035] Reference Figure 3 and Figure 5 The mounting sleeve 26 is provided with a fixing washer 27, which is fitted over the mounting sleeve 26 and has an arc-shaped cross-section. One end of the fixing washer 27 abuts against the end of the mounting head 21 near the mounting strip 22, and the other end of the fixing washer 27 abuts against the mounting bracket. The inner diameter of the fixing washer 27 is smaller than the outer diameter of the mounting sleeve 26 near the mounting head 21, meaning that the fixing washer 27 will not detach directly from the mounting sleeve 26.

[0036] The implementation principle of a complete set of pole-mounted transformer equipment in this application embodiment is as follows: when the mounting bolt 2 becomes loose, the mounting bolt 2 moves away from the mounting frame, the anode sleeve 261 will no longer abut against the disc spring 24, allowing the disc spring 24 to protrude from the annular groove 23, so that the deformed part 252 can be reset, and the display part 251 can protrude from the mounting head 21, so that maintenance personnel can observe it in a timely manner.

[0037] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A complete set of pole-mounted transformer platform equipment, comprising a transformer body (1) and a support frame (11), wherein the transformer body (1) is mounted on the support frame (11), characterized in that: The support frame (11) is provided with mounting bolts (2), which are used to fix the support frame (11) and the mounting frame relatively. The mounting bolts (2) include mounting heads (21) and mounting strips (22). The mounting heads (21) are integrally formed on the mounting strips (22). The mounting strips (22) have annular grooves (23) and disc springs (24) in the annular grooves (23). The surface of the mounting heads (21) has a moving groove (231) that communicates with the annular grooves (23). The moving grooves (231) have display strips (25) in the moving grooves (231). The display strips (25) are used to protrude from the mounting heads (21). The disc springs (24) are used to restrict the movement of the display strips (25) in the moving grooves (231). When the mounting bolts (2) are loose, the disc springs (24) can protrude from the annular grooves (23), and the display strips (25) can protrude from the moving grooves (231).

2. The complete set of equipment for a pole-mounted transformer platform according to claim 1, characterized in that: The mounting bolt (2) is fitted with a mounting sleeve (26), which is fitted on the outside of the disc spring (24); when the mounting bolt (2) is threaded into the thread groove, the mounting sleeve (26) is located between the mounting head (21) and the mounting bracket.

3. The complete set of equipment for a pole-mounted transformer platform according to claim 2, characterized in that: The mounting sleeve (26) is provided with a fixing gasket (27), which is used to abut against the mounting head (21) and the mounting bracket. The outer diameter of the mounting sleeve (26) gradually decreases along the direction from the mounting head (21) to the mounting strip (22), and the inner diameter of the fixing gasket (27) is smaller than the outer diameter of the mounting sleeve (26) facing the mounting head (21).

4. The complete set of equipment for a pole-mounted transformer platform according to claim 2, characterized in that: An anode sleeve (261) is provided on the inner wall of the mounting sleeve (26), and the anode sleeve (261) abuts against the outer diameter of the mounting strip (22).

5. A complete set of equipment for a pole-mounted transformer platform according to claim 4, characterized in that: The anode sleeve (261) covers the outer surface of the annular groove (23); when the anode sleeve (261) is consumed, the disc spring (24) can protrude from the annular groove (23).

6. A complete set of equipment for a pole-mounted transformer platform according to claim 2, characterized in that: The mounting head (21) has a mounting groove (211) on its surface facing the mounting strip (22), and one end of the mounting sleeve (26) is inserted into the mounting groove (211).

7. A complete set of equipment for a pole-mounted transformer platform according to claim 1, characterized in that: The display bar (25) includes a display section (251) and a deformable section (252). The deformable section (252) is disposed on one end of the display section (251). The deformable section (252) has elastic deformation capability. The deformable section (252) is located in the moving groove (231) and the annular groove (23). The outer diameter of the deformable section (252) away from the annular groove (23) is smaller than the outer diameter of the deformable section (252) close to the annular groove (23). When the disc spring (24) protrudes from the annular groove (23), the deformable section (252) resets to allow the display section (251) to protrude from the mounting head (21).

8. A complete set of equipment for a pole-mounted transformer platform according to claim 7, characterized in that: The outer wall of the display unit (251) is provided with reflective patterns (253); when the display unit (251) protrudes from the mounting head (21), the reflective patterns (253) are exposed.

Images