A kind of anti-twist webbing hardware for insulator connection

Abstract

The utility model relates to the technical field of insulator hardware, disclose a kind of anti-twist web hardware for the connection of insulator, including the insulator main body for electrical insulation, the upper hardware assembly for being used to the fixed installation of insulator main body is set on the upper end, the cable fixing assembly for being used to the fixed clamping of cable is set in the upper hardware assembly, when insulator is subjected to torsional force, anti-migration tooth is engaged with insulator, limit axial displacement and disperse torsional force, positioning ring cooperates preliminary limit, when insulator is twisted, connecting ring rotates synchronously, recess and protruding block generate relative displacement, when torsional force is small, protruding block is formed mechanical locking by being clamped into recess, directly prevent twisting, when torsional force is large, protruding block slides along recess bevel, consume energy and attenuate torsional amplitude, positioning ring and anti-migration tooth continue to limit axial displacement simultaneously, by mechanical limit and engagement locking, prevent insulator from excessive torsion due to wind load, conductor swing etc., avoid insulation performance decline.

Description

Technical Field

[0001] This utility model relates to the field of insulator fittings technology, specifically to an anti-torsion connecting plate fitting for insulator connections. Background Technology

[0002] Insulator connection hardware is a type of electrical hardware, specifically referring to components that connect overhead power lines and have insulation capabilities. The characteristics of insulator connection hardware are that it has good insulation performance, can connect the end of the conductor to the live conductor, and isolate the live conductor from the ground, thereby ensuring the smooth and safe operation of the circuit. Chinese patent CN221766449U discloses an insulator lightning protection connection hardware, including a mounting base, a connecting column fixedly connected to the top of the mounting base, a connecting plate fixedly connected to the outer wall of the connecting column, a fixed groove fixedly connected to the bottom of the connecting plate, a retaining ring fixedly connected to the surface of the mounting base, a current guiding device fixedly connected to the outer wall of the mounting base, and a grounding device fixedly connected to the outer wall of the current guiding device. The current guiding device includes a truncated cone. This insulator lightning protection connection hardware, through the setting of the current guiding device and the setting of multiple current-diverting bars, conducts lightning strikes in multiple directions. The waterproof rubber ring inside the truncated cone ensures waterproof performance and prevents the conductivity of water flow from affecting the effect of the lightning protection device. The setting of the insulating rubber pad further achieves a highly efficient lightning protection effect, provides lightning protection for the connection hardware, and extends the service life of the connection hardware. However, the following shortcomings still exist: When insulators are in use, strong winds (especially gusts, turbulent winds, and other unstable wind directions) will generate lateral forces, causing the insulators to be subjected to alternating torque. In high-voltage power transmission, the conductor current generates a magnetic field, and the electromagnetic interaction between the insulator and the live conductor will also generate additional torque as the current changes. After the insulator is twisted, the connection between it and the anti-torsion connecting plate hardware will be subjected to continuous force and friction, which will accelerate the wear of the hardware and reduce its mechanical strength. At the same time, the insulator body is subjected to torsional force, which can easily cause internal cracks. Brittle insulators such as glass and porcelain are more likely to break after long-term torsion, directly losing their insulation function. Therefore, those skilled in the art provide an anti-torsion connecting plate hardware for insulator connection to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-torsion connecting plate fitting for insulator connections, thereby solving the problems mentioned in the background art above.

[0004] This utility model provides the following technical solution: an anti-torsion connecting plate hardware for insulator connection, comprising an insulator body for electrical insulation, an upper hardware assembly for installing and fixing the insulator body at the upper end of the insulator body, a cable fixing assembly for clamping and fixing cables inside the upper hardware assembly, a lower hardware assembly for installing and fixing the insulator body at the lower end of the insulator body, and an anti-torsion limiting assembly for preventing the insulator body from torturing is assembled between the lower hardware assembly and the upper hardware assembly and the insulator body.

[0005] As a preferred embodiment of the above technical solution, the upper fitting assembly includes an upper connecting seat, which is fixedly connected to the upper end of the insulator body. The upper connecting seat has mounting holes on both sides near the edges. The upper connecting seat has clamping plates fixedly connected to both sides of its upper end. The two clamping plates and the upper connecting seat are integrated into one piece. The upper end of the two clamping plates has a clamping groove.

[0006] As a preferred embodiment of the above technical solution, the cable fixing assembly includes a screw rod that is engaged in a slot. A nut is threadedly connected to the outside of the screw rod near the front of the slot. Nuts are threadedly connected to the outside of the screw rod near the rear of the slot on both sides. Nut 3 is threadedly connected to one side of nut 2. A sleeve plate is movably sleeved between nuts 2 and nut 3 on the outside of the screw rod. Two sets of sleeve plates are provided. Cable fixing clamps are fixedly connected to the inner sides of the two sets of sleeve plates. Several cable slots are opened in the cable fixing clamps.

[0007] As a preferred embodiment of the above technical solution, the lower fitting assembly includes a lower connecting seat, which is fixedly connected to the lower end of the insulator body, and mounting holes are provided on both sides near the edges of the lower connecting seat.

[0008] As a preferred embodiment of the above technical solution, the anti-torsion limiting component is provided in two sets. The two sets of anti-torsion limiting components include limiting plates. The limiting plates and the insulator body are connected to a matching slot. A positioning ring is fixedly connected to the upper end of the inner wall of the limiting plate. The positioning ring has anti-displacement teeth arranged in a ring array on its inner diameter.

[0009] As a preferred embodiment of the above technical solution, a fixing block is fixedly installed at the lower end of the limiting plate, and an anti-blocking rod is rotatably connected to the inner side of the fixing block. The anti-blocking rod has protrusions arranged in a ring array on its outer diameter. A connecting ring is rotatably connected to one side of the anti-blocking rod near the center of the inner wall of the limiting plate. The connecting ring has grooves arranged in a ring array on its outer diameter, and the grooves and protrusions are compatible.

[0010] Compared with the prior art, the beneficial effects of this utility model are: When the insulator body of this invention is subjected to torsional force, the anti-displacement teeth engage with the insulator to limit axial movement and disperse the torsional force. The positioning ring assists in the initial limiting. When the insulator is torsion, the connecting ring rotates synchronously, causing the groove and the protrusion to have relative displacement. When the torsional force is small, the protrusion is locked into the groove to form a mechanical lock, directly preventing torsion. When the torsional force is large, the protrusion slides along the inclined surface of the groove, consuming energy and attenuating the torsional amplitude. At the same time, the positioning ring and the anti-displacement teeth continuously limit the axial displacement. Through mechanical limiting and engagement locking, the insulator is prevented from being excessively torsioned by wind loads, conductor swing, etc., thus avoiding a decrease in insulation performance. Attached Figure Description

[0011] Figure 1 This is a right-side three-dimensional structural schematic diagram of an anti-torsion connecting plate fitting used for insulator connections; Figure 2 This is a left-side three-dimensional structural diagram of an anti-torsion connecting plate fitting used for insulator connections; Figure 3 A three-dimensional structural diagram showing the disassembly of the upper hardware components and cable fixing components; Figure 4 A cross-sectional three-dimensional structural diagram of the anti-torsion limiting component.

[0012] Legend: 1. Insulator body; 2. Upper hardware assembly; 201. Upper connecting seat; 202. Mounting hole one; 203. Clamping plate; 204. Clamping groove; 3. Cable fixing assembly; 301. Screw; 302. Nut one; 303. Nut two; 304. Nut three; 305. Sleeve plate; 306. Cable fixing clamp; 4. Lower hardware assembly; 401. Lower connecting seat; 402. Mounting hole two; 5. Anti-torsion limiting assembly; 501. Limiting plate; 502. Positioning ring; 503. Anti-displacement tooth; 504. Fixing block; 505. Anti-blocking rod; 506. Protrusion; 507. Connecting ring; 508. Groove. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] Please see Figures 1-4 As shown, this utility model provides a technical solution: an anti-torsion connecting plate hardware for insulator connection, including an insulator body 1 for electrical insulation, an upper hardware assembly 2 for installing and fixing the insulator body 1 at the upper end of the insulator body 1, a cable fixing assembly 3 for clamping and fixing the cable inside the upper hardware assembly 2, a lower hardware assembly 4 for installing and fixing the insulator body 1 at the lower end of the insulator body 1, and an anti-torsion limiting assembly 5 for preventing the insulator body 1 from torturing is assembled between the lower hardware assembly 4 and the upper hardware assembly 2 and the insulator body 1.

[0015] As one implementation method in this embodiment, please refer to Figure 3 As shown, the cable fixing assembly 3 includes a screw 301, which is snapped into the slot 204. A nut 302 is threadedly connected to the outside of the screw 301 near the front of the slot 204. Nuts 303 are threadedly connected to the two sides of the outside of the screw 301 near the back of the slot 204. Nuts 304 are threadedly connected to one side of nut 303. A sleeve plate 305 is movably sleeved between nuts 303 and nut 304 on the outside of the screw 301. Two sets of sleeve plates 305 are provided. Cable fixing clamps 306 are fixedly connected to the inner sides of the two sets of sleeve plates 305. Several cable slots are opened in the cable fixing clamps 306. Furthermore, the screw 301 is snapped into the slot 204 of the clamping plate 203. The slot structure of the slot 204 provides lateral rigidity for the screw 301, effectively preventing it from shifting left or right. To further lock the position of the screw 301, the threaded section near the front of the slot 204 is used with a nut 302. Tightening the nut 302 makes it fit tightly against the front side of the slot 204. The contact with the rear side of the slot 204 creates an axial clamping force, firmly fixing the screw 301 in the slot 204, completely eliminating the risk of axial movement. The subsequent cable fixing provides rigid support. When the clamping state needs to be adjusted, the second nut 303 and the third nut 304 are loosened by screwing them. At this time, the two sets of sleeve plates 305 can move closer to each other along the axial direction of the screw 301, driving the cable fixing clamp 306 to tighten synchronously until the cable is tightly clamped. The reverse adjustment of the nut can increase the clamping plate spacing, which is convenient for cable loading and unloading. The clamping plate spacing can be flexibly changed according to the cable diameter. It can both increase the contact area to disperse the clamping force and adapt to different specifications of cables or compensate for minor position deviations during installation, achieving the dual effect of rigid fixing and flexible adaptation.

[0016] As one implementation method in this embodiment, please refer to Figure 4 As shown, the anti-torsion limiting component 5 is provided in two sets. The two sets of anti-torsion limiting components 5 include a limiting plate 501. The limiting plate 501 and the insulator body 1 are connected with a matching slot. The upper end of the inner wall of the limiting plate 501 is fixedly connected to a positioning ring 502. The inner diameter of the positioning ring 502 is arranged in a ring array with anti-shifting teeth 503. The lower end of the limiting plate 501 is fixedly installed with a fixing block 504. The inner side of the fixing block 504 is rotatably connected to an anti-blocking rod 505. The outer diameter of the anti-blocking rod 505 is arranged in a ring array with protrusions 506. One side of the anti-blocking rod 505 is rotatably connected to a connecting ring 507 near the center of the inner wall of the limiting plate 501. The outer diameter of the connecting ring 507 is arranged in a ring array with grooves 508. The grooves 508 and the protrusions 506 are matched. Furthermore, when the insulator body 1 is subjected to torsional force, the anti-displacement tooth 503 engages with the insulator body 1 to restrict axial movement. The torsional force is dispersed by tooth contact to avoid stress concentration. The positioning ring 502 initially limits the displacement. When the insulator body 1 is twisted, the connecting ring 507 rotates synchronously, and the groove 508 and the protrusion 506 are relatively displaced. When the torsional force is small, the protrusion 506 is mechanically locked into the groove 508 to directly resist torsion. When the torsional force is large, the protrusion 506 slides along the inclined surface of the groove 508 to consume energy and attenuate the torsional amplitude. At the same time, the positioning ring 502 and the anti-displacement tooth 503 continuously limit the axial displacement. Through mechanical limiting and meshing locking, the torsional angle of the insulator caused by wind load, conductor swing, etc., and the problem of decreased insulation performance are limited.

[0017] Working principle: The upper connecting seat 201 of the upper hardware assembly 2 is fixedly connected to the upper end of the insulator body 1, and the lower connecting seat 401 of the lower hardware assembly 4 is fixedly connected to the lower end of the insulator body 1, forming a stable structure with upper and lower clamping and overall force bearing. On this basis, the mounting holes 1 202 on both sides of the upper connecting seat 201 are connected to the external load-bearing structure by bolt fasteners, and the mounting holes 2 402 on both sides of the lower connecting seat 401 are rigidly connected to the matching components below, thus completing the installation and fixing of the insulator body 1. After the screw 301 is inserted into the slot 204, the slot 204 restricts its left and right displacement. The nut 302 is tightened to abut against the front side of the slot 204, forming a clamping force with the rear side of the slot 204 to fix the screw 301 and prevent axial movement. The adjustable sleeve 305 is adjusted by turning the nut 303 and nut 304, which drives the cable fixing clamp 306 to tighten or loosen. Different specifications of cables are clamped through the cable slot, taking into account both fixation and compatibility. When the insulator body 1 is subjected to torsional force, the anti-displacement tooth 503 engages with the insulator, limiting axial movement and dispersing the torsional force. The positioning ring 502 cooperates in limiting the movement, and the connecting ring 507 rotates with the insulator, causing the groove 508 and the protrusion 506 to move relative to each other. When the force is small, the protrusion 506 is locked into the groove 508 to prevent torsion. When the force is large, the protrusion 506 slides along the groove to dissipate energy and reduce the amplitude. The positioning ring 502 and the anti-displacement tooth 503 continuously limit the axial displacement. Through mechanical limiting and engagement, excessive torsion is prevented and the insulation performance is maintained.

[0018] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A torsion-resistant connecting plate fitting for insulator connections, comprising an insulator body (1) for electrical insulation, characterized in that: The upper end of the insulator body (1) is provided with an upper fitting assembly (2) for installing and fixing the insulator body (1). The upper fitting assembly (2) is provided with a cable fixing assembly (3) for clamping and fixing the cable. The lower end of the insulator body (1) is provided with a lower fitting assembly (4) for installing and fixing the insulator body (1). The lower fitting assembly (4) and the upper fitting assembly (2) are connected to the insulator body (1) with an anti-torsion limiting assembly (5) for preventing the insulator body (1) from twisting.

2. The anti-torsion connecting plate hardware for insulator connection according to claim 1, characterized in that: The upper fitting assembly (2) includes an upper connecting seat (201), which is fixedly connected to the upper end of the insulator body (1). The upper connecting seat (201) has mounting holes (202) on both sides near the edge. The upper connecting seat (201) has clamping plates (203) fixedly connected to both sides of the upper end. The two clamping plates (203) and the upper connecting seat (201) are integrated. The upper end of the two clamping plates (203) is provided with a slot (204).

3. The anti-torsion connecting plate hardware for insulator connection according to claim 2, characterized in that: The cable fixing assembly (3) includes a screw (301), which is engaged in the slot (204). A nut (302) is threadedly connected to the front of the screw (301) near the slot (204). Nuts (303) are threadedly connected to the two sides of the screw (301) near the back of the slot (204). Nuts (304) are threadedly connected to one side of nut (303). A sleeve plate (305) is movably sleeved between nuts (303) and nuts (304) near the outside of the screw (301). Two sets of sleeve plates (305) are provided. Cable fixing clamps (306) are fixedly connected to the inner sides of the two sets of sleeve plates (305). Several cable slots are opened in the cable fixing clamps (306).

4. The anti-torsion connecting plate hardware for insulator connection according to claim 1, characterized in that: The lower fitting assembly (4) includes a lower connecting seat (401), which is fixedly connected to the lower end of the insulator body (1). The lower connecting seat (401) has two mounting holes (402) on both sides near the edge.

5. The anti-torsion connecting plate hardware for insulator connection according to claim 1, characterized in that: The anti-torsion limiting component (5) is provided in two sets. The two sets of the anti-torsion limiting component (5) include a limiting plate (501). The limiting plate (501) and the insulator body (1) are connected with a matching slot. The upper end of the inner wall of the limiting plate (501) is fixedly connected with a positioning ring (502). The inner diameter of the positioning ring (502) is arranged in a ring array with anti-displacement teeth (503).

6. The anti-torsion connecting plate hardware for insulator connection according to claim 5, characterized in that: A fixing block (504) is fixedly installed at the lower end of the limiting plate (501). An anti-blocking rod (505) is rotatably connected to the inner side of the fixing block (504). The outer diameter of the anti-blocking rod (505) is arranged with protrusions (506) in a ring array. A connecting ring (507) is rotatably connected to one side of the anti-blocking rod (505) near the center of the inner wall of the limiting plate (501). The outer diameter of the connecting ring (507) is provided with grooves (508) in a ring array. The grooves (508) and the protrusions (506) are compatible.

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