A needle type insulator

Abstract

The application discloses a needle type insulator and relates to the technical field of needle type insulators. At present, there is the problem of excessive bending between the electric wire and the insulator when the electric wire is arranged in an inclined manner. The needle type insulator comprises a string body and a wire fixing mechanism. The wire fixing mechanism comprises a carrier installed on the top of the string body, a supporting rod fixed on the carrier, and a wire conveying disc rotatably installed on one end of the carrier through a bearing. A guide cover is arranged on the carrier and is in rotary cooperation with the wire conveying disc. The wire conveying disc and the guide cover are in one-way transmission. The electric wire is elastically connected to a clamping piece on the guide cover to realize one-way tightening and pay-off of the electric wire. The electric wire is in rotary cooperation with the guide cover to control the inclination angle between the electric wire and the carrier. The electric wire passes through the cavity between the guide cover and the wire conveying disc. The rotation of the guide cover around the wire conveying disc forms a cavity with changeable position to adjust the height of the two ends of the electric wire. The traditional horizontal wire slot is replaced, so that the electric wire is not excessively bent during the inclined arrangement of the electric wire, and the electric wire is protected.

Description

Technical Field

[0001] This invention relates to the field of pin insulator technology, and more particularly to a pin insulator. Background Technology

[0002] Pin insulators are components used to support or suspend conductors and form electrical insulation between the tower and the conductor. They are indispensable components in power systems, characterized by excellent electrical insulation performance, high mechanical strength, and good weather resistance. The role of pin insulators must be emphasized during the operation and maintenance of power systems to ensure their normal operation and safety.

[0003] However, when fixing wires with existing pin insulators, the wires are first placed in the groove and then tied to the insulator with a strap. This method of fixing wires has the following defects in actual use: (1) When the wires are laid out from the bottom of the mountain to the top, the wires are laid out at an angle relative to the ground. Therefore, the wires cannot be completely placed in the groove of the horizontally placed pin insulator. If the wires are forcibly tied in the groove of the insulator, the wires will be excessively bent and damaged. (2) The tightness of the wires cannot be adjusted by using the binding method, which brings inconvenience to the construction process. Summary of the Invention

[0004] The purpose of this invention is to provide a pin-type insulator to solve the problem of excessive bending between the wire and the insulator when the wire is laid at an angle.

[0005] To achieve the above objectives, the present invention employs the following technology: a pin-type insulator comprising a string body and a wire-fixing mechanism, wherein the wire-fixing mechanism includes a carrier frame mounted on the top of the string body, a support rod fixed on the carrier frame, and a wire feed reel rotatably mounted at one end of the carrier frame via a bearing; a guide cover rotatably connected to the carrier frame and cooperating with the wire feed reel, and the wire feed reel and the guide cover achieve unidirectional transmission; the wire is unidirectionally tightened and released by a clamp elastically connected to the guide cover, and the tilt angle between its two ends and the carrier frame is controlled by the rotational cooperation of the guide cover.

[0006] As a further description of a pin-type insulator of the above-mentioned technology:

[0007] It also includes a wire prying assembly mounted on the support rod, which, in conjunction with the rotation of the wire feed reel, enables the assembly and disassembly of the wire and the wire fixing mechanism. The guide cover is composed of a cover and an arc-shaped plate, with the arc-shaped plate surrounding the outside of the wire feed reel to form a semi-circular wire-passing cavity.

[0008] As a further description of a pin-type insulator of the above-mentioned technology:

[0009] A pawl is rotatably and elastically connected to the guide cover, and a ratchet that engages with the pawl is fixedly installed at one end of the cable tray. A rotating column that is rotatably connected to the carrier frame via a bearing is fixedly installed on one side of the guide cover, and a positioning bolt that abuts against the rotating column is threaded onto the carrier frame.

[0010] As a further description of a pin-type insulator of the above-mentioned technology:

[0011] The cable-pulling assembly includes a sleeve threaded onto a support rod, on which a V-shaped cable-pulling plate is fixedly mounted. A limiting disc is rotatably connected to the outside of the support rod via a bearing. The edge of the limiting disc has an integrally formed protrusion that slides with the cable-pulling plate. Several arc-shaped racks are arranged in a ring on the cable feed reel, and these racks are inclined. The cross-sectional diameter formed by the racks is the same as the cross-sectional diameter of the limiting disc.

[0012] In summary, due to the adoption of the above-mentioned technology in the pin-type insulator, the beneficial effects of this invention are:

[0013] By passing the wire through the cavity between the guide cover and the cable tray, and utilizing the rotation of the guide cover around the cable tray to create a cavity with adjustable position, the height of both ends of the wire can be adjusted. This replaces the traditional method of horizontally opening cable channels, preventing excessive bending of the wire during inclined cable laying and protecting the wire. The unidirectional transmission between the cable tray and the guide cover, along with the clamping mechanism to limit the wire's movement within the cavity, prevents the wire from returning, achieving unidirectional tightening of the wire. This allows for adjustment of the tightness during cable laying, facilitating cable laying and simplifying construction. Furthermore, when the prying assembly rotates to a high position, it limits the wire on the cable tray, preventing it from detaching during movement. When the prying assembly rotates to a low position, it releases the wire from the limit, facilitating wire removal. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the carrier frame of the present invention in a high position.

[0016] Figure 3 This is a schematic diagram of the carrier frame of the present invention in a low position.

[0017] Figure 4 This is a front view of the guide cover structure of the present invention.

[0018] Figure 5 This is a schematic diagram of the cable tray structure of the present invention.

[0019] Figure 6 This is a side view of the limiting disk structure of the present invention.

[0020] Figure 7 This is a schematic diagram of the rotating column structure of the present invention.

[0021] Legend:

[0022] 10. String body;

[0023] 20. Cable securing mechanism; 21. Carrier frame; 22. Support rod; 23. Guide cover; 24. Rack; 25. Ratchet; 26. Cable feed reel; 27. Positioning bolt; 28. Rotating column; 29. ​​Clamping device; 29a. Pawl;

[0024] 30. Pry wire assembly; 31. Pry wire plate; 32. Limiting plate; 33. Sleeve; 34. Protrusion block. Detailed Implementation

[0025] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a pin-type insulator according to the present invention in a clear and complete manner. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1-7 As shown, the present invention provides a pin-type insulator comprising a string body 10 and a wire fixing mechanism 20. The wire fixing mechanism 20 includes a carrier frame 21 mounted on the top of the string body 10, a support rod 22 fixed on the carrier frame 21, and a wire feed reel 26 rotatably mounted on one end of the carrier frame 21 via a bearing. A guide cover 23 is rotatably connected to the carrier frame 21 and rotates with the wire feed reel 26, and the wire feed reel 26 and the guide cover 23 achieve unidirectional transmission. The guide cover 23 is composed of a cover and an arc-shaped plate. The arc-shaped plate surrounds the outside of the wire feed reel 26 to form a semi-circular wire-passing cavity. The cavity provides space for the movement of the wire. The semi-circular wire-passing cavity causes the wire to form an arc shape within the cavity, preventing excessive bending between the wire and the pin-type insulator, thus protecting the wire.

[0027] A pawl 29a is rotatably connected to the guide cover 23, and a ratchet 25 that engages with the pawl 29a is fixedly installed at one end of the wire feed reel 26. When the wire moves in the cavity, the friction between the wire and the wire feed reel 26 can drive the wire feed reel 26 to rotate, so that the wire feed reel 26 can rotate in the forward direction relative to the guide cover 23. Due to the engagement of the ratchet 25 and the pawl 29a, the wire feed reel 26 will not rotate in the reverse direction relative to the guide cover 23. The friction of the wire feed reel 26 on the wire provides a certain support force to prevent the wire from retracting.

[0028] In more detail, the wire is elastically connected to the guide cover 23 by the clip 29 to achieve unidirectional tightening and unwinding, and the tilt angle between its two ends and the carrier 21 is controlled by the rotation of the guide cover 23.

[0029] The clip 29 has an arc-shaped structure, and the inner wall of the guide cover 23 has an arc-shaped groove that matches the clip 29 to support the clip 29. Preferably, the clip 29 and the guide cover 23 are rotatably connected by a torsion spring. The elastic force provided by the torsion spring can keep the clip 29 in contact with the wire, thereby further preventing the wire from retracting. This prevents the wire from returning after moving in the cavity, achieving unidirectional tightening of the wire. It also helps to adjust the tightness during the wiring process, making wire wiring easier and bringing convenience to the construction.

[0030] like Figure 1 , Figures 3-5 As shown, a rotating column 28 is fixedly installed on one side of the guide cover 23 and rotatably connected to the carrier 21 via a bearing. The carrier 21 is threadedly connected to a positioning bolt 27 that abuts against the rotating column 28. The rotation of the rotating column 28 can drive the rotation of the guide cover 23, thereby adjusting the position of the guide cover 23. Rotating the positioning bolt 27 abuts against the rotating column 28, so that the guide cover 23 can be firmly fixed after rotating to an appropriate angle. By passing the wire through the cavity between the guide cover 23 and the cable tray 26, the rotation of the guide cover 23 around the cable tray 26 forms a cavity with a changeable position to adjust the height of both ends of the wire, replacing the traditional method of opening a horizontal cable trough. This prevents the wire from bending excessively during the inclined cable laying process, thus protecting the wire.

[0031] like Figures 1-6 As shown, it also includes a wire prying assembly 30 mounted on the support rod 22, which, in conjunction with the rotation of the wire feed reel 26, enables the assembly and disassembly of the wire from the wire fixing mechanism 20. The wire prying assembly 30 includes a sleeve 33 threadedly connected to the support rod 22. The sleeve 33 can be rotated on the support rod 22 manually or with a wrench. A V-shaped wire prying plate 31 is fixedly mounted on the sleeve 33. When the sleeve 33 rotates, it can drive the wire prying plate 31 to rotate as well.

[0032] Among them, the support rod 22 is rotatably connected to the limiting plate 32 through the bearing. The edge of the limiting plate 32 is integrally formed with a protrusion 34 that is slidably connected to the pry plate 31. Therefore, when the pry plate 31 rotates, the pry plate 31 will slide between the protrusions 34, and at the same time, it can drive the limiting plate 32 to rotate together. When the protrusion 34 rotates to the high point, it can limit the wire on the wire feed tray 26 to prevent the wire from falling off the wire feed tray 26 when it moves.

[0033] In addition, several arc-shaped racks 24 are arranged in a ring on the cable reel 26, and the racks 24 are arranged at an angle. The diameter of the cross-section formed by the racks 24 is the same as the diameter of the limiting plate 32. The racks 24 can increase the friction between the cable reel 26 and the wire, so that when the wire is pulled, it can drive the cable reel 26 to rotate together. On the other hand, the arc-shaped racks 24 can exert a force on the wire along the axis of the rack 24 during rotation, so that the wire can easily detach from the cable reel 26. Therefore, when the protrusion 34 rotates to the lowest position, the protrusion 34 is released from the limiting position on the wire, and at this time, the forward rotation of the cable reel 26 can easily detach the wire from the cavity.

[0034] In more detail, when installing an already laid wire onto a pin insulator, simply insert the wire through the side openings of the limiting plate 32 and the guide cover 23 (e.g., Figure 3 (As shown in the diagram), at this time, the rotating pry bar 31 rotates from the low point to the high point, and the V-shaped characteristics can be used to push the wire into the cavity, thereby installing the wire.

[0035] Working principle: When using pin insulators to fix wires during wiring, the wires can be fixed in two ways. The first is to insert one end of the wire into the inlet of the pin insulator, directly passing it through the semi-circular threading cavity formed by the wire reel 26 and the guide cover 23. This causes the wire to form an arc shape within the cavity. As the wire moves within the cavity, the friction between the wire and the wire reel 26 drives the wire reel 26 to rotate, allowing it to rotate forward relative to the guide cover 23. Due to the ratchet 25 and pawl 29a... The combination of the cable tray 26 and the guide cover 23 prevents the cable reel 26 from rotating in the opposite direction. The friction between the cable tray 26 and the cable provides a certain support force to prevent the cable from retracting. In addition, the elastic connection between the clip 29 and the guide cover 23 keeps the clip 29 in contact with the cable, thereby further preventing the cable from retracting. This prevents the cable from returning after moving in the cavity, achieving unidirectional tightening of the cable. It also helps to adjust the tightness during the cable laying process, making the cable laying more convenient and bringing convenience to the construction.

[0036] In addition, by using the rotation of the guide cover 23 around the cable tray 26, a cavity with a changeable position is formed to adjust the height of both ends of the cable, replacing the traditional method of opening the cable groove horizontally. This prevents the cable from bending excessively during the inclined cable laying process, thus protecting the cable.

[0037] The second method involves manually bending the wire into an arc and installing it on the pin insulator. Simply insert the wire through the side opening of the limiting plate 32 and the guide cover 23, and then rotate the wire prying plate 31 from the low point to the high point. This utilizes the V-shaped characteristics to push the wire into the cavity, thus installing the wire.

[0038] Finally, during rotation, the arc-shaped rack 24 can exert a force on the wire along the axis of the rack 24 by its own shape, making it easy for the wire to detach from the feed reel 26; therefore, when the protrusion 34 rotates to the low position, the protrusion 34 is released from the limit on the wire, and at this time, the forward rotating feed reel 26 can easily detach the wire from the cavity.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technology of the pin insulator and the inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pin-type insulator comprising a string body (10) and a line fixing mechanism (20), characterized in that, The fixed line mechanism (20) comprises a carrier (21) installed on the top of the string body (10), a supporting rod (22) fixed on the carrier (21), and a wire feeding disc (26) rotatably installed on one end of the carrier (21) through a bearing; The carrier (21) is self-lockingly rotatably connected with a guide cover (23) rotatably matched with the wire feeding disc (26), the guide cover (23) is composed of a cover body and an arc-shaped plate, the arc-shaped plate is wrapped outside the wire feeding disc (26) to form a semicircular threading cavity, and the wire feeding disc (26) and the guide cover (23) realize one-way transmission; The elastic connection of the wire on the clamping piece (29) on the guide cover (23) limits the one-way tightening and releasing of the wire, and the wire is rotatably matched with the guide cover (23) to control the inclination angle between the wire and the carrier (21); The pry assembly (30) assembled on the supporting rod (22) is matched with the rotation of the wire feeding disc (26) to realize the disassembly and assembly of the wire and the fixed line mechanism (20), the pry assembly (30) comprises a sleeve (33) threadedly connected on the supporting rod (22), a V-shaped pry plate (31) fixedly installed on the sleeve (33), a limiting disc (32) rotatably connected on the outside of the supporting rod (22), a convex block (34) integrally formed on the edge of the limiting disc (32) and slidably connected with the pry plate (31), and a plurality of arc-shaped gear racks (24) annularly arranged on the wire feeding disc (26).

2. A pin-type insulator according to claim 1, wherein The guide cover (23) is elastically rotatably connected with a pawl (29a), and one end of the wire feeding disc (26) is fixedly installed with a ratchet wheel (25) matched with the pawl (29a).

3. A pin insulator according to any one of claims 2, wherein One side of the guide cover (23) is fixedly installed with a rotating column (28) rotatably connected with the carrier (21) through a bearing, and the carrier (21) is threadedly connected with a positioning bolt (27) abutting against the rotating column (28).

4. A pin-type insulator according to claim 1, wherein The diameters of the cross sections surrounded by the plurality of gear racks (24) are the same as the cross section diameter of the limiting disc (32).

Images