Pin type insulator

Abstract

The invention discloses a pin insulator, and relates to the technical field of pin insulators. At present, the problem that excessive bending exists between an electric wire and an insulator when the electric wire is obliquely arranged is solved, the wire fixing device comprises a string body and a wire fixing mechanism, the wire fixing mechanism comprises a carrying frame installed at the top of the string body, a supporting rod is fixed to the carrying frame, and a wire conveying disc is rotationally installed at one end of the carrying frame through a bearing; a guide cover rotationally matched with the wire conveying disc is arranged on the carrying frame, and one-way transmission between the wire conveying disc and the guide cover is achieved; the electric wire is limited by the clamping piece elastically connected to the guide cover to achieve one-way tightening and paying off, and the inclination angle between the two ends of the guide cover and the carrying frame is controlled through rotating fit of the guide cover. The electric wire penetrates through the cavity between the guide cover and the wire conveying disc, the guide cover rotates around the wire conveying disc to form the cavity with the changeable position to adjust the heights of the two ends of the electric wire, a traditional mode that a wire groove is horizontally formed is replaced, the electric wire cannot be excessively bent in the inclined wire arranging process, and the electric wire is protected.

Description

Technical Field

[0001] The invention relates to the technical field of pin-type insulators, and in particular to a pin-type insulator. Background Art

[0002] Pin insulators are components used to support or suspend conductors and form electrical insulation between towers and conductors. Pin insulators are an indispensable and important component in power systems, with excellent electrical insulation performance, high mechanical strength, and good weather resistance. During the operation and maintenance of power systems, it is necessary to pay attention to the role of pin insulators to ensure their normal operation and safety.

[0003] However, when fixing the wires with the existing pin insulators, the wires are first placed in the wire trough and then tied to the insulators with a binding strap. This method of fixing the wires has the following defects during actual use: (1) When the wires are pulled from the bottom of the mountain to the top of the mountain, the arrangement of the wires is inclined relative to the ground, so the wires cannot be completely placed in the insulator trough on the horizontally placed pin insulator. If the wires are forcibly tied in the insulator trough, the wires will be excessively bent and damaged. (2) The method of fixing the wires with binding cannot adjust the tightness of the wire arrangement, which brings inconvenience to the construction process. Summary of the invention

[0004] The purpose of the present invention is to provide a pin-type insulator to solve the problem of excessive bending between electric wires and insulators when the electric wires are arranged obliquely.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a pin insulator: it includes a string body and a wire fixing mechanism, the wire fixing mechanism includes a carrier installed on the top of the string body, a support rod is fixed on the carrier, and a wire transmission disk is rotatably installed on one end of the carrier through a bearing; a guide cover that is rotatably connected to the carrier and cooperates with the wire transmission disk in a self-locking manner, and the wire transmission disk and the guide cover realize one-way transmission; the wire is elastically connected to the clip limit on the guide cover to realize one-way tightening and releasing, and the guide cover is rotated to control the inclination angle between its two ends and the carrier.

[0006] As a further description of a pin insulator of the above technology: It also includes a wire prying assembly mounted on the support rod, and cooperates with the rotation of the wire transmission tray to realize the disassembly and assembly between the wire and the wire fixing mechanism. The guide cover is composed of a cover body and an arc plate, and the arc plate surrounds the outside of the wire transmission tray to form a semicircular wire threading cavity with it.

[0007] As a further description of a pin insulator of the above technology: A ratchet is elastically rotatably connected to the guide cover, a ratchet wheel cooperating with the ratchet is fixedly installed at one end of the line conveying drum, a rotating column rotatably connected to the carrier via a bearing is fixedly installed on one side of the guide cover, and a positioning bolt abutting against the rotating column is threadedly connected to the carrier.

[0008] As a further description of a pin insulator of the above technology: The prying wire assembly includes a sleeve threadedly connected to the support rod, and a V-shaped prying wire plate is fixedly installed on the sleeve. The outside of the support rod is rotatably connected to a limit plate through a bearing, and a protrusion block is integrally formed on the edge of the limit plate and is slidably connected to the prying wire plate. A plurality of arc-shaped racks are arranged in a ring on the wire conveying disk, and the racks are arranged obliquely. The cross-sectional diameter surrounded by the plurality of racks is the same as the cross-sectional diameter of the limit plate.

[0009] In summary, due to the use of the above-mentioned technology, the pin-type insulator of the present invention has the following beneficial effects: By passing the wires through the cavity between the guide cover and the wire transmission drum, the guide cover is rotated around the wire transmission drum to form a cavity with a changeable position to adjust the height of both ends of the wire, instead of the traditional method of opening a wire trough horizontally, so that the wires will not be excessively bent during the inclined wiring process, thereby protecting the wires; using the one-way transmission between the wire transmission drum and the guide cover, and using the clamp to limit the wires, the wires cannot return after moving in the cavity, thereby achieving one-way tightening of the wires, and adjusting the tightness during the wiring process to a certain extent, making it convenient for the wiring of the wires and bringing convenience to the construction; in addition, when the wire prying assembly is rotated to a high point, the wires on the wire transmission drum can be limited to prevent the wires from detaching from the wire transmission drum when moving, and when the wire prying assembly is rotated to a low point, the wire limit is released, thereby facilitating the removal of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an overall schematic diagram of the present invention.

[0011] Figure 2 It is a schematic diagram of the state where the carrier of the present invention is located at a high point.

[0012] Figure 3 It is a schematic diagram of the state where the carrier of the present invention is located at a low point.

[0013] Figure 4 It is a front view of the guide cover structure of the present invention.

[0014] Figure 5 It is a schematic diagram of the structure of the transmission tray of the present invention.

[0015] Figure 6 It is a side view of the limiting plate structure of the present invention.

[0016] Figure 7 It is a schematic diagram of the rotating column structure of the present invention.

[0017] Legend: 10. String body; 20. Line fixing mechanism; 21. Carrier; 22. Support rod; 23. Guide cover; 24. Rack; 25. Ratchet; 26. Line delivery tray; 27. Positioning bolt; 28. Rotating column; 29. ​​Clamp; 29a. Ratchet; 30. Pry wire assembly; 31. Pry wire plate; 32. Limit plate; 33. Sleeve; 34. Raised block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the pin-type insulator in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 7 As shown, a pin insulator provided by the present invention comprises a string body 10 and a wire fixing mechanism 20, wherein the wire fixing mechanism 20 comprises a carrier 21 mounted on the top of the string body 10, a support rod 22 is fixed on the carrier 21, and a wire transmission disc 26 is rotatably mounted on one end of the carrier 21 through a bearing; a guide cover 23 rotatably matched with the wire transmission disc 26 is connected to the carrier 21 in a self-locking manner, and the wire transmission disc 26 and the guide cover 23 realize one-way transmission; wherein the guide cover 23 is composed of a cover body and an arc plate, and the arc plate surrounds the outside of the wire transmission disc 26 to form a semicircular threading cavity with it, and the cavity provides a movable space for the movement of the wire, and the semicircular threading cavity allows the wire to form an arc shape in the cavity, so that there is no excessive bending between the wire and the pin insulator, thereby protecting the wire; A pawl 29a is elastically rotatably connected to the guide cover 23, and a ratchet 25 cooperating with the pawl 29a is fixedly installed at one end of the wire transmission drum 26; when the wire moves in the cavity, the friction between the wire and the wire transmission drum 26 can drive the wire transmission drum 26 to rotate, so that the wire transmission drum 26 can rotate forward relative to the guide cover 23. Due to the cooperation between the ratchet 25 and the pawl 29a, the wire transmission drum 26 will not rotate reversely relative to the guide cover 23. The friction force of the wire transmission drum 26 on the wire is used to provide a certain supporting force to provide support to prevent the wire from retracting.

[0020] In further detail, the wire is elastically connected to the clamp 29 on the guide cover 23 to limit the position to achieve unidirectional tightening and releasing of the wire, and the guide cover 23 is rotated to control the tilt angle between its two ends and the carrier 21; The clamp 29 is of an arc-shaped structure, and an arc-shaped groove matching the clamp 29 is provided on the inner wall of the guide cover 23 to support the clamp 29. Preferably, the clamp 29 and the guide cover 23 are rotatably connected via a torsion spring, and the elastic force provided by the torsion spring can keep the clamp 29 in contact with the wire, thereby further preventing the wire from retracting; making it impossible for the wire to return after moving in the cavity, thereby achieving one-way tightening of the wire, adjusting the tightness during the wiring process to a certain extent, facilitating the wiring of the wires, and bringing convenience to the construction.

[0021] like Figure 1 , Figure 3-Figure 5 As shown, a rotating column 28 rotatably connected to the carrier 21 via a bearing is fixedly installed on one side of the guide cover 23, and a positioning bolt 27 abutting against the rotating column 28 is threadedly connected to the carrier 21. The rotation of the rotating column 28 can drive the rotation of the guide cover 23 to adjust the position of the guide cover 23. The rotating 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. The wires are passed through the cavity between the guide cover 23 and the wire conveying drum 26, and the guide cover 23 is rotated around the wire conveying drum 26 to form a cavity with a changeable position to adjust the height of the two ends of the wire, replacing the traditional method of opening a wire trough horizontally, so that the wires will not be excessively bent during the inclined wiring process, thereby protecting the wires.

[0022] like Figure 1-Figure 6 As shown, it also includes a wire prying assembly 30 assembled on the support rod 22, and cooperates with the wire feeding disc 26 to rotate to realize the disassembly and assembly between the wire and the wire fixing mechanism 20. The wire prying assembly 30 includes a sleeve 33 threadedly connected to the support rod 22, and 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 installed on the sleeve 33. When the sleeve 33 rotates, the sleeve 33 can drive the wire prying plate 31 to rotate; The outside of the support rod 22 is rotatably connected to the limit plate 32 through a bearing, and the edge of the limit plate 32 is integrally formed with a protrusion block 34 that is slidably connected to the wire prying plate 31. Therefore, when the wire prying plate 31 rotates, the wire prying plate 31 will slide between the protrusion blocks 34 and can drive the limit plate 32 to rotate together. When the protrusion block 34 rotates to the high point, it can limit the wires on the wire transmission tray 26 to prevent the wires from detaching from the wire transmission tray 26 when moving; In addition, a plurality of arc-shaped racks 24 are arranged in a ring on the wire tray 26, and the racks 24 are arranged obliquely. The cross-sectional diameter formed by the plurality of racks 24 is the same as the cross-sectional diameter of the limit plate 32. On the one hand, the racks 24 can increase the degree of friction between the wire tray 26 and the wire, so that when the wire is pulled, it can drive the wire tray 26 to rotate together. On the other hand, the arc-shaped racks 24 can rely on their own shape to generate a force for the wire to move along the axis of the racks 24 during the rotation process, so that the wire can be easily detached from the wire tray 26; therefore, when the protruding block 34 rotates to the low point, the protruding block 34 is separated from the limit of the wire, and at this time, the forward rotation of the wire tray 26 can easily detach the wire from the cavity; In further detail, when the laid wire is installed on the pin insulator, it is only necessary to put the wire into the side opening of the limit plate 32 and the guide cover 23 (such as Figure 3 As shown in the state), when the rotating prying plate 31 is rotated from the low point to the high point, the V-shaped characteristics can be used to push the wire into the cavity, thereby installing the wire.

[0023] Working principle: When using the pin insulator to fix the wires, there are two ways to fix the wires. The first is to insert one end of the wire from the wire inlet end of the pin insulator and directly insert it into the semicircular threading cavity surrounded by the wire transmission disc 26 and the guide cover 23, so that the wire forms an arc shape in the cavity. When the wire moves in the cavity, the friction between the wire and the wire transmission disc 26 can drive the wire transmission disc 26 to rotate, so that the wire transmission disc 26 can rotate forward relative to the guide cover 23. The cooperation causes the wire delivery disk 26 to not rotate reversely relative to the guide cover 23, and the friction force of the wire delivery disk 26 on the wire is used to provide a certain supporting force to provide support to prevent the wire from retracting; and the elastic connection between the clamp 29 and the guide cover 23 is cooperated to keep the clamp 29 in contact with the wire, thereby further preventing the wire from retracting; the wire cannot return after moving in the cavity, thereby realizing one-way tightening of the wire, adjusting the tightness during the wiring process to a certain extent, facilitating the wiring of the wire, and bringing convenience to the construction.

[0024] In addition, the guide cover 23 is rotated around the wire conveying plate 26 to form a cavity with a changeable position to adjust the height of the two ends of the wire, replacing the traditional method of opening a horizontal wire trough, so that the wire will not be excessively bent during the inclined wiring process, thereby protecting the wire.

[0025] The second method is to manually bend the wire into an arc. When installing it on the pin insulator, you only need to put the wire into the side openings of the limit plate 32 and the guide cover 23. At this time, the rotating wire prying plate 31 is rotated 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.

[0026] Finally, the arc-shaped rack 24 can rely on its own shape to generate a force on the wire to move along the axis of the rack 24 during the rotation process, so that the wire can be easily detached from the wire conveying disk 26; therefore, when the protrusion block 34 rotates to the low point, the protrusion block 34 is separated from the limit of the wire, and at this time, the forward rotation of the wire conveying disk 26 can easily detach the wire from the cavity.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacement or changes to a pin-type insulator and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pin insulator, comprising a string body (10) and a wire fixing mechanism (20), characterized in that: The wire fixing mechanism (20) comprises a carrier (21) mounted on the top of the string body (10), a support rod (22) being fixed on the carrier (21), and a wire conveying disc (26) being rotatably mounted on one end of the carrier (21) via a bearing; The carrier (21) is rotatably connected to a guide cover (23) that is rotatably matched with the wire conveyor disk (26) in a self-locking manner, and the wire conveyor disk (26) and the guide cover (23) realize one-way transmission; The electric wire is elastically connected to the clamping piece (29) on the guide cover (23) to limit the position so as to achieve unidirectional tightening and releasing of the wire, and the guide cover (23) is rotated to cooperate so as to control the tilt angle between the two ends thereof and the carrier (21); It also includes a wire prying assembly (30) mounted on the support rod (22) and cooperating with the wire conveying disk (26) to rotate to realize assembly and disassembly of the wires and the wire fixing mechanism (20).

2. A pin insulator according to claim 1, characterized in that: The guide cover (23) is composed of a cover body and an arc-shaped plate, and the arc-shaped plate surrounds the outside of the wire conveying disk (26) to form a semicircular wire threading cavity therewith.

3. A pin insulator according to claim 2, characterized in that: A ratchet (29a) is elastically rotatably connected to the guide cover (23), and a ratchet wheel (25) cooperating with the ratchet (29a) is fixedly mounted on one end of the wire conveying drum (26).

4. A pin insulator according to any one of claims 1 to 3, characterized in that: A rotating column (28) rotatably connected to the carrier (21) via a bearing is fixedly mounted on one side of the guide cover (23); the carrier (21) is threadedly connected to a positioning bolt (27) abutting against the rotating column (28).

5. The pin insulator according to claim 1, characterized in that: The pry wire assembly (30) comprises a sleeve (33) threadedly connected to the support rod (22), and a V-shaped pry wire plate (31) is fixedly mounted on the sleeve (33).

6. The pin insulator according to claim 5, characterized in that: The outside of the support rod (22) is rotatably connected to a limit plate (32) via a bearing, and a protruding block (34) slidably connected to the prying plate (31) is integrally formed on the edge of the limit plate (32).

7. The pin insulator according to claim 6, characterized in that: A plurality of arc-shaped racks (24) are arranged in a ring on the wire conveyor drum (26), and the racks (24) are arranged in an inclined manner.

8. The pin insulator according to claim 7, characterized in that: The cross-sectional diameter formed by the plurality of racks (24) is the same as the cross-sectional diameter of the limiting plate (32).

Images