Porcelain insulators that prevent cables from loosening

Abstract

The utility model discloses an electric porcelain insulator capable of preventing a cable from loosening, comprising an insulator, a lower casing, an upper casing and a connecting and fixing frame, both sides of the lower casing and the upper casing are welded with connecting plates, a lower insulating layer is arranged at the center of the upper end surface of the lower casing, an upper insulating layer is arranged at the center of the lower end surface of the upper casing, a fixing block is arranged on the outer surface of the upper end of the insulator, and the connecting and fixing frames are arranged at both ends of the fixing block. The electric porcelain insulator capable of preventing a cable from loosening increases the length of the connection between the insulator and the cable by extending the upper casing and the lower casing, thereby reducing the influence of vibration forces such as wind force on the electric porcelain insulator, thus reducing the shaking and vibration of the insulator, preventing the insulator from loosening or displacement due to external force, and supporting and connecting the two ends of the lower casing by two sets of connecting and fixing frames, thereby forming a flat-shaped supporting structure, preventing the swing amplitude of the insulator from increasing, effectively fixing the insulator, and avoiding shaking and swinging.

Description

Technical Field

[0001] The utility model relates to the technical field of insulators, in particular to an electric porcelain insulator which can prevent a cable from loosening. Background Art

[0002] An insulator is a device installed between conductors at different potentials or between a conductor and a ground potential component. It can withstand voltage and mechanical stress. It is a special insulating element that can play an important role in overhead transmission lines. In the early years, insulators were mostly used on electric poles, and gradually developed into high-type high-voltage electric wire connection towers with many disc-shaped insulators hung on one end. It is to increase the creepage distance and is usually made of glass or ceramics, which is called an insulator.

[0003] For example, the patent document of application number 202310702621.3 discloses an electric porcelain insulator that can prevent the loosening of a cable line. The electric porcelain insulator that can prevent the loosening of a cable line includes an insulator, a fixing column is fixed on the top of the insulator, the top of the fixing column is rotatably mounted on a placement seat, a fixing rod is fixed on the top of the placement seat, a pressing seat is slidably mounted on the outer wall of the fixing rod, and two groups of fixing rods are provided. When the electric porcelain insulator that can prevent the loosening of a cable line needs to be clamped and pressed to fix the cable, the pressing seat is moved downward by pressing downward, and then the cable can be clamped and pressed by the pressing plate. When the cable is clamped and fixed, the pressing seat can be fixed on the fixing rod through the cooperation of the connecting column, the connecting block, the movable rod, the moving block, the limiting rod and the limiting groove, so that the pressing seat cannot move downward, and the pressing plate is prevented from continuing to clamp and fix the cable, which is easy to cause damage to the cable.

[0004] For similar porcelain insulators, when the connection between the insulator and the cable line is subjected to strong wind, external vibration or stress, the severe weather such as strong wind will exert a greater force on the insulator and the cable line, causing the insulator to shake and produce stress concentration when affected by external forces, which can easily lead to loose connection between the insulator and the cable line over time.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a porcelain insulator that can prevent the cable from loosening is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a porcelain insulator which can prevent the loosening of a cable line. When the connection between the insulator and the cable line is subjected to strong wind, external vibration or stress, the insulator and the cable line will be subjected to greater force in severe weather such as strong wind, which will cause the insulator to shake and generate stress concentration under the influence of external forces, which will easily lead to the loosening of the connection between the insulator and the cable line over time.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric porcelain insulator capable of preventing a cable from loosening, comprising an insulator, a lower shell, an upper shell and a connecting and fixing frame, wherein the lower shell is arranged on the upper end surface of the insulator, the upper shell is arranged on the upper end surface of the lower shell, connecting plates are welded on both sides of the lower shell and the upper shell, and threaded holes are provided at both ends of the bottom of the lower shell, a fixing hole is provided on the plate body of the connecting plate, eight groups of the fixing holes are provided, the inner cavities of the eight groups of the fixing holes are provided with first bolts, nuts are provided on the outer surface of the first bolt bolt body, a lower insulating layer is provided at the center of the upper end surface of the lower shell, an upper insulating layer is provided at the center of the lower end surface of the upper shell, a fixing block is provided on the outer surface of the upper end of the insulator, the connecting and fixing frames are respectively provided at both ends of the fixing blocks, a mounting seat is provided at one end of the connecting and fixing frame away from the insulator, and a second bolt is provided on the outer side of the mounting seat.

[0008] Furthermore, the lower shell and the upper shell are combined into a shell structure, and the upper insulating layer and the lower insulating layer are combined into an insulating layer structure.

[0009] Furthermore, four groups of fixing holes are provided on the plate body of each group of connecting plates, and the first bolts are engaged with the nuts by passing through the fixing holes.

[0010] Furthermore, the upper end surface of the mounting seat abuts against the lower end surface of the lower shell, the second bolt and the threaded hole have the same diameter, and the second bolt passes through the mounting seat and engages with the threaded hole.

[0011] Furthermore, the two groups of connecting and fixing frames have an inclination angle of 45 degrees upwards, and the two groups of connecting and fixing frames are mirror images of each other.

[0012] Furthermore, one end of the two groups of connecting and fixing frames away from the second bolt is welded to the fixing block, and the upper insulating layer and the lower insulating layer are both made of silicone rubber.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by extending the upper and lower casings, the length of the connection between the insulator and the electric cable is increased, thereby reducing the influence of vibration forces such as wind on the insulator, thus reducing the shaking and vibration of the insulator, preventing it from loosening or displacement due to external forces, and supporting and connecting the two ends of the lower casing through two sets of connecting and fixing frames, thereby forming a flat support structure, preventing the insulator from increasing its swing amplitude, effectively fixing the insulator, and avoiding shaking and swinging. The specific contents are as follows:

[0014] An insulator, an upper casing, a lower casing, an upper insulating layer, a lower insulating layer, a first bolt, a connecting plate, a fixing hole and a nut are provided. The upper casing cooperates with the lower casing to form an extended casing at the connection between the cable line and the insulator. The length of the connection between the insulator and the cable is increased by extending the upper casing and the lower casing. The upper insulating layer and the lower insulating layer can be combined and inserted into the surface of the cable during installation to form a more stable connection. This can reduce the influence of vibration forces such as wind on the insulator, reduce the shaking and vibration of the insulator, avoid loosening or displacement of the insulator due to external force, provide a larger supporting area and stability, effectively fix, prevent shaking and swinging at the connection between the cable and the insulator, keep the insulator in a stable position, thereby avoiding the influence of external forces on the insulator, shaking at the connection with the cable to cause the line to loosen, and ensure the normal operation of the cable line.

[0015] A fixing block, a threaded hole, a connecting fixing frame, a mounting seat and a second bolt are provided. The fixing block is connected to the two sets of connecting fixing frames, and after the two sets of connecting fixing frames are tilted outward by 45 degrees, the end away from the fixing block is connected to the mounting seat, and the mounting seat is fixed in the threaded holes at both ends of the lower casing by bolts, so that the two ends of the lower casing are supported and connected by the two sets of connecting fixing frames to form a flat support structure, which prevents the insulator from shaking and swinging under the casing, can further enhance the stability of its connection, and avoid causing loosening of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side structural schematic diagram of the utility model of the electric porcelain insulator which can prevent the cable from loosening;

[0017] Figure 2 This is a front view structural schematic diagram of the utility model of the electric porcelain insulator which can prevent the cable from loosening;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of an upper casing of a tray frame of an electric porcelain insulator capable of preventing a cable from loosening according to the utility model;

[0019] Figure 4 The utility model is a porcelain insulator which can prevent the cable from loosening. Figure 1 Schematic diagram of the local enlarged structure at A in the figure.

[0020] In the figure: 1, insulator; 2, lower casing; 3, upper casing; 4, first bolt; 5, connecting plate; 51, fixing hole; 6, nut; 7, upper insulating layer; 8, lower insulating layer; 9, fixing block; 10, threaded hole; 11, connecting fixing frame; 12, mounting seat; 13, second bolt. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figures 1 to 4 As shown, the electric porcelain insulator which can prevent the cable from loosening comprises an insulator 1, a lower casing 2, an upper casing 3 and a connecting fixing frame 11, wherein the lower casing 2 is arranged on the upper end surface of the insulator 1, and the function of the insulator 1 is to support the connecting cable and maintain the insulating state, and the upper casing 3 is arranged on the upper end surface of the lower casing 2, and the lower casing 2 and the upper casing 3 are combined into a set of casing structures, and the lower casing 2 and the upper casing 3 cooperate to form an extended casing structure at the connection between the cable and the insulator 1, and both sides of the lower casing 2 and the upper casing 3 are welded with connecting plates 5, and the connecting plates 5 provide a connecting medium between the lower casing 2 and the upper casing 3, and the plate body of the connecting plate 5 is provided with fixing holes 51, and the fixing holes 51 are fixed. There are eight groups of holes 51, and the eight groups of fixing holes 51 are used for the first bolts 4 to pass through and fix. Four groups of fixing holes 51 are provided on the plate body of each group of connecting plates 5. The plate bodies of the connecting plates 5 on both sides of the lower shell 2 and the upper shell 3 are provided with fixing holes 51 to provide uniform connection. The inner cavities of the eight groups of fixing holes 51 are all provided with first bolts 4, and the outer surface of the bolt body of the first bolt 4 is provided with nuts 6. The first bolts 4 are meshed with the nuts 6 by passing through the fixing holes 51. The first bolts 4 pass through the fixing holes 51 of the lower shell 2 and the upper shell 3 in turn and are fixed by rotating and meshing with the nuts 6, so that the lower shell 2 and the upper shell 3 are completely connected and fixed into a whole.

[0023] A lower insulating layer 8 is provided at the center of the upper end surface of the lower casing 2. The lower insulating layer 8 provides insulation protection for the cable line. The material of the lower insulating layer 8 is silicone rubber, which has good insulation performance and can effectively prevent current leakage and external interference of the cable line. An upper insulating layer 7 is provided at the center of the lower end surface of the upper casing 3. The upper insulating layer 7 and the lower insulating layer 8 are combined into a group of insulating layer structures, and the upper insulating layer 7 and the lower insulating layer 8 are combined into a group of insulating layer structures to jointly protect the cable line. The materials of the upper insulating layer 7 and the lower insulating layer 8 are both silicone rubber, which increases the friction between the cable line and the lower casing 2 and the upper casing 3 to provide a buffering effect;

[0024] A fixing block 9 is provided on the outer surface of the upper end of the insulator 1, and the fixing block 9 is fixed on the outer surface of the upper end of the insulator 1 to provide a supporting and fixing function. The connecting fixing frames 11 are respectively provided at both ends of the fixing blocks 9, and the ends of the two sets of connecting fixing frames 11 away from the second bolt 13 are welded to the fixing blocks 9, and the fixing blocks 9 are welded to the connecting fixing frames 11, and the insulator 1 is connected to the lower casing 2 through the connecting fixing frames 11. A mounting seat 12 is provided at the end of the connecting fixing frame 11 away from the insulator 1, and the upper end surface of the mounting seat 12 abuts against the lower end surface of the lower casing 2. The mounting seat 12 is connected to the connecting fixing frame 11, and the contact area with the lower casing 2 is increased, and the outer surface is fitted. The two ends at the bottom of the lower casing 2 A threaded hole 10 is opened at both ends, and a second bolt 13 is arranged on the outer side of the mounting seat 12. The second bolt 13 is equal to the aperture size of the threaded hole 10. The second bolt 13 passes through the mounting seat 12 and engages with the threaded hole 10. The second bolt 13 passes through the mounting seat 12 and engages with the threaded hole 10 of the lower shell 2, thereby connecting the other end of the connecting frame 11 to its lower shell 2. The inclination angle of the two groups of connecting frames 11 is 45 degrees upward, and the two groups of connecting frames 11 are mirror-imaged. The two groups of connecting frames 11 are mirror-imaged by tilting 45 degrees, thereby forming a flat support structure with the lower shell 2, forming a stable overall structure, and further providing a connection support effect.

[0025] In summary, if Figures 1 to 4 As shown, the electric porcelain insulator which can prevent the cable from loosening, the lower insulating layer 7 arranged on the surface of the lower casing 2 abuts against the outer surface of the cable, after the upper insulating layer 7 is installed on the upper end face of the cable, the upper casing 3 is installed on the upper end face of the upper insulating layer 8, and a complete extended sleeve structure is formed by stacking and installing in sequence, and the connecting plates 5 on both sides of the lower casing 2 and the upper casing 3 are used to provide an installation medium, and the fixing holes 51 on the surface thereof are penetrated by installing the first bolt 4 and meshed with the nut 6, so that the upper casing 3 and the lower casing 2 are sleeved and installed on the outer surface of the cable, and the two groups of connecting and fixing frames 11 are inclined at 45 degrees and correspond to each other in a mirror image, so that when the fixing block 9 at the upper end of the insulator 1 is welded with the connecting and fixing frame 11, one end thereof connected with the mounting seat 12 abuts against the lower casing 2, and is meshed with the threaded hole 10 of the lower casing 2 by the second bolt 13, so as to fix it, forming a flat-shaped support structure to firmly connect the extended sleeve composed of the lower casing 2 and the upper casing 3 with the insulator.

Claims

1. A porcelain insulator capable of preventing a cable from loosening, comprising an insulator (1), a lower casing (2), an upper casing (3) and a connecting and fixing frame (11), characterized in that: The lower casing (2) is arranged on the upper end surface of the insulator (1), and the upper casing (3) is arranged on the upper end surface of the lower casing (2). Connecting plates (5) are welded on both sides of the lower casing (2) and the upper casing (3), and threaded holes (10) are provided at both ends of the bottom of the lower casing (2). The plate body of the connecting plate (5) is provided with fixing holes (51). There are eight groups of fixing holes (51). The inner cavities of the eight groups of fixing holes (51) are all provided with first bolts (4). The first bolts (4) are bolted A nut (6) is provided on the outer surface of the body, a lower insulating layer (8) is provided at the center of the upper end surface of the lower casing (2), an upper insulating layer (7) is provided at the center of the lower end surface of the upper casing (3), a fixing block (9) is provided on the outer surface of the upper end of the insulator (1), the connecting fixing frame (11) is respectively provided at both ends of the fixing block (9), a mounting seat (12) is provided at one end of the connecting fixing frame (11) away from the insulator (1), and a second bolt (13) is provided on the outer side of the mounting seat (12).

2. The electric porcelain insulator capable of preventing the cable from loosening according to claim 1 is characterized in that: The lower casing (2) and the upper casing (3) are combined into a casing structure, and the upper insulating layer (7) and the lower insulating layer (8) are combined into an insulating layer structure.

3. The electric porcelain insulator capable of preventing the cable from loosening according to claim 1 is characterized in that: Four groups of fixing holes (51) are provided on the plate body of each group of connecting plates (5), and the first bolts (4) are meshed with the nuts (6) by passing through the fixing holes (51).

4. The electric porcelain insulator capable of preventing the cable from loosening according to claim 1 is characterized in that: The upper end surface of the mounting seat (12) abuts against the lower end surface of the lower casing (2); the second bolt (13) and the threaded hole (10) have the same diameter; the second bolt (13) passes through the mounting seat (12) and meshes with the threaded hole (10).

5. The electric porcelain insulator capable of preventing the cable from loosening according to claim 2 is characterized in that: The two groups of connecting and fixing frames (11) have an inclination angle of 45 degrees upwards, and the two groups of connecting and fixing frames (11) are mirror images of each other.

6. The electric porcelain insulator capable of preventing the cable from loosening according to claim 5 is characterized in that: The ends of the two groups of connecting and fixing frames (11) away from the second bolt (13) are welded to the fixing block (9), and the upper insulating layer (7) and the lower insulating layer (8) are both made of silicone rubber.

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