Column insulator

Abstract

The utility model relates to the technical field of insulators, in particular to a column insulator. Comprising an insulator porcelain piece, a metal base is arranged at the lower end of the insulator porcelain piece, a bolt is arranged at the lower end of the metal base, a fixing seat is arranged at the upper end of the insulator porcelain piece, a lower groove and a plurality of studs are arranged on the top surface of the fixing seat, and an upper groove is formed in the bottom surface of a pressing plate. The cross section of the lower groove and the cross section of the upper groove are in a circular arc shape, the extending direction of the lower groove and the extending direction of the upper groove incline downwards in the direction from the middle to the two ends, a plurality of through holes for studs to penetrate through are further formed in the pressing plate, and the pressing plate further comprises a plurality of nuts used for being connected with the studs. According to the utility model, the effect of compressing the electric wires at the two ends of the lower groove is good, so that the abrasion of the electric wires at the two ends is small.

Description

Technical Field

[0001] The utility model relates to the technical field of insulators, in particular to a post insulator. Background Art

[0002] Post insulators are applied in the field of power transmission and play an insulating role. The patent with the application number 201310322933.8 discloses a post porcelain insulator, which includes a porcelain part, a wire pressing plate, a bolt, a first nut matching with the bolt, a hollow fixing rod and a connecting piece; wherein, one end of the porcelain part is provided with a first groove, and a top cap is poured at the end provided with the first groove, and the top cap does not cover the first groove; the fixing rod is fixed on the upper surface of the top cap on one side of the first groove, and the inner surface of the fixing rod has a thread matching with the bolt; a second groove identical to the first groove is arranged on one surface of the wire pressing plate, and a fixing hole matching with the bolt is arranged on the surface of the wire pressing plate on one side of the second groove, which reduces the wear of the aluminum conductor steel-reinforced wire under the action of micro-vibration, thereby reducing the probability of the aluminum conductor steel-reinforced wire being worn and broken and reducing the power outage failure rate. However, its first groove extends in the horizontal direction. In fact, the middle part of the wire between two utility poles sags, resulting in the wire being inclined, causing the middle part of the wire in the first groove to be slightly arched upward. This leads to that when pressing the wire in the first groove, the wire in the middle of the first groove is subjected to greater force while the two ends are subjected to smaller force or even no force, resulting in poor pressing effect on the wire at both ends of the first groove, and the wire at this place is prone to relative movement with the first groove, resulting in wear. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a post insulator aiming at the above-mentioned existing technical deficiencies.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a post insulator, which includes an insulating porcelain part, a metal base is arranged at the lower end of the insulating porcelain part, a bolt is arranged at the lower end of the metal base, a fixing seat is arranged at the upper end of the insulating porcelain part, a lower groove and a plurality of stud bolts are arranged on the top surface of the fixing seat, an upper groove is arranged on the bottom surface of the pressing plate, the cross sections of the lower groove and the upper groove are arc-shaped, the extending directions of the lower groove and the upper groove are inclined downward in the direction from the middle to the two ends, a plurality of through holes for the stud bolts to pass through are further arranged on the pressing plate, and a plurality of nuts for connecting with the stud bolts are further included.

[0005] Further, a yielding groove is arranged in the middle of the bottom surface of the pressing plate.

[0006] Further, the lower part of the fixing seat is in a cylindrical shape, and this cylindrical part is sleeved on the upper part of the insulating porcelain part and a cement adhesive is filled between the two.

[0007] Furthermore, the upper part of the metal base is cylindrical, and this cylindrical part is sleeved on the lower part of the insulator porcelain part, and a cement adhesive is filled between the two.

[0008] Compared with the prior art, the utility model has the following advantages: 1. The extending directions of the lower groove and the upper groove are inclined downward in the direction from the middle to both ends, so the pressing effect on the wires at both ends of the lower groove is better, and it is not easy for the wires to move relatively at the ends of the lower groove, so the wear of the wires at this place is smaller; 2. A yielding groove is arranged in the middle of the bottom surface of the pressing plate, and the wear of the wires is further reduced. Description of the Drawings

[0009] Figure 1 It is a schematic structural view of a post insulator.

[0010] Figure 2 It is a cross-sectional view of a post insulator.

[0011] In the figure: 1. Metal base; 2. Insulator porcelain part; 3. Fixed seat; 31. Lower groove; 32. Stud; 4. Pressing plate; 41. Upper groove; 42. Yielding groove. Detailed Embodiment

[0012] To make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the detailed embodiment and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessarily confusing the concept of the utility model.

[0013] Detailed embodiment: Combine Figure 1-2As shown in the figure, a post insulator includes an insulating porcelain part 2. A metal base 1 is provided at the lower end of the insulating porcelain part 2. A bolt is provided at the lower end of the metal base 1. A metal fixing seat 3 is provided at the upper end of the insulating porcelain part 2. A lower groove 31 and a plurality of studs 32 are provided on the top surface of the fixing seat 3. The lower groove 31 penetrates both sides of the fixing seat 3. An upper groove 41 is provided on the bottom surface of the pressing plate 4. The upper groove 41 penetrates both sides of the pressing plate 4. The cross-sections of the lower groove 31 and the upper groove 41 are arc-shaped. The extending directions of the lower groove 31 and the upper groove 41 are inclined downward in the direction from the middle to both ends, and the inclined angle is preferably about 0.5° (the angle with the horizontal plane). On the cross-section passing through the symmetry plane of the lower groove 31, arc transitions are provided at the intersection of the two side lines at the bottom of the lower groove 31 in the middle of the lower groove 31. A plurality of through holes for the studs 32 to pass through are further provided on the pressing plate 4, and a plurality of nuts for connecting with the studs 32 are also included. When in use, first place the electric wire in the lower groove 31, then align the through holes on the pressing plate 4 with the studs 32 and sleeved on them, and then tighten the nuts so that the electric wire is pressed between the upper groove 41 and the lower groove 31. Since the extending directions of the lower groove 31 and the upper groove 41 are inclined downward in the direction from the middle to both ends, it can offset to a certain extent the influence caused by the upward arching of the electric wire in the middle of the lower groove 31, and has a better pressing effect on the electric wire at both ends of the lower groove 31, and the wear generated between the electric wire at this place and the lower groove 31 is smaller. In order to further reduce wear, the two ends of the upper groove 41 and the lower groove 31 should be aligned.

[0014] Preferably, a yielding groove 42 is provided in the middle of the bottom surface of the pressing plate 4. The top surface of the yielding groove 42 does not contact the electric wire, so that the pressure of the upper groove 41 on the electric wire is concentrated at both ends of the lower groove 31. Therefore, the pressing and fixing effects are better, the electric wire is less likely to move relatively with the end of the lower groove 31, and the wear of the electric wire is further reduced.

[0015] Specifically, the lower part of the fixing seat 3 is cylindrical, and this cylindrical part is sleeved on the upper part of the insulating porcelain part 2 and cement adhesive is filled between the two.

[0016] Specifically, the upper part of the metal base 1 is cylindrical, and this cylindrical part is sleeved on the lower part of the insulating porcelain part 2 and cement adhesive is filled between the two.

[0017] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A column insulator, comprising an insulator porcelain part (2), a metal base (1) being arranged at the lower end of the insulator porcelain part (2), a bolt being arranged at the lower end of the metal base (1), characterized in that: A fixing seat (3) is provided at the upper end of the insulator porcelain part (2), a lower groove (31) and a plurality of studs (32) are provided on the top surface of the fixing seat (3), an upper groove (41) is provided on the bottom surface of the clamping plate (4), the cross-sections of the lower groove (31) and the upper groove (41) are arc-shaped, the extension direction of the lower groove (31) and the upper groove (41) is inclined downward from the middle to the two ends, and the clamping plate (4) is also provided with a plurality of through holes for the studs (32) to pass through, and also includes a plurality of nuts for connecting with the studs (32).

2. A post insulator according to claim 1, characterized in that: A retreat groove (42) is provided in the middle of the bottom surface of the pressing plate (4).

3. A post insulator according to any one of claims 1-2, characterized in that: The lower part of the fixing seat (3) is cylindrical, and the cylindrical part is sleeved on the upper part of the insulator porcelain part (2), and cement adhesive is filled between the two.

4. A post insulator according to any one of claims 1-2, characterized in that: The upper part of the metal base (1) is cylindrical, and the cylindrical part is sleeved on the lower part of the insulator porcelain part (2), and cement adhesive is filled between the two.

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