FASTENING STRUCTURE OF CLAMP FOR SUPPORTING POWER LINE AND INSULATOR

Abstract

Provided is a fastening structure of a clamp for supporting a power line and an insulator, which includes a fastening means for preventing an end of the insulator from being separated from the clamp in a state in which the end of the insulator is disposed between an arm part and an auxiliary arm part of the clamp. The fastening means includes a cotter pin fitted to pass through through-holes of the arm part and the auxiliary arm part of the clamp and the end of the insulator and an elastic latching rod mounted on the cotter pin and elastically curved to pass through each of the through-holes and to be restored in its original shape, thereby preventing the cotter pin from being separated. The elastic latching rod is mounted on the cotter pin and has the form of a coil spring where both ends of the elastic latching rod protrude from the cotter pin. A dent groove corresponding to each of both the protruding ends of the elastic latching rod is formed in each of side surfaces of the cotter pin facing each other. The elastic latching rod is mounted on the cotter pin in a manner in which the elastic latching rod is fittably coupled to a fitting hole formed in a lower end of the cotter pin. According to the fastening structure of the clamp for supporting the power line and the insulator, the clamp and the insulator may be safely and quickly fastened and separated by using the cotter pin provided with the elastic latching rod to improve the efficiency and the stability of the work due to the maintenance and repair of the power line.

Claims

1. A fastening structure of a clamp for supporting a power line and an insulator, the fastening structure comprising: a fastening means for preventing an end of the insulator from being separated from the clamp in a state in which the end of the insulator is disposed between an arm part and an auxiliary arm part of the clamp, wherein the fastening means comprises: a cotter pin fitted to pass through through-holes of the arm part and the auxiliary arm part of the clamp and the end of the insulator; and an elastic latching rod mounted on the cotter pin and configured to be elastically bent to pass through each of the through-holes and to be restored in its original shape, thereby preventing the cotter pin from being separated.

2. The fastening structure of claim 1, wherein the elastic latching rod is mounted on the cotter pin and has a form of a coil spring, both ends of the elastic latching rod protruding from the cotter pin.

3. The fastening structure of claim 2, wherein the elastic catching rod has the form of the coil spring in which gaps between spirals are dense to improve structural strength.

4. The fastening structure of claim 1, wherein a dent groove corresponding to each of both the protruding ends of the elastic latching rod is formed in each of side surfaces of the cotter pin facing each other to prevent the elastic latching rod, which is elastically bendable, from interfering with the side surfaces of the cotter pin.

5. The fastening structure of claim 1, wherein the elastic latching rod is adapted to be fittably coupled to a fitting hole formed in a lower end of the cotter pin.

6. The fastening structure of claim 5, wherein, in a state in which the elastic latching rod is mounted into the fitting hole of the cotter pin, the elastic latching rod is fixed to the cotter pin by a protrusion of an inside of the fitting hole, the protrusion being formed by striking a bottom of the cotter pin.

Description

DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a view illustrating a general fastening structure of a clamp for supporting a power line and an insulator.

[0024] FIG. 2 is a perspective view illustrating the fastening structure of the clamp for supporting the power line and the insulator according to conventional technology.

[0025] FIG. 3 is a perspective view illustrating a coupled state between a cotter pin and an elastic latching rod according to the present invention.

[0026] FIG. 4 is a view illustrating an example of a process of fitting the cotter pin into a clamp and an insulator according to the present invention.

[0027] FIG. 5 is a view illustrating a state in which the clamp and the insulator are fastened by the cotter pin according to the present invention.

[0028] FIG. 6 is a view illustrating an example of a method for fixing the elastic latching rod to the cotter pin according to the present invention.

BEST MODE

[0029] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0030] First, a fastening structure of a clamp for supporting a power line and an insulator according to the present invention includes a fastening means for preventing an end of the insulator 8 from being separated from the clamp 10 in a state in which the end of the insulator 8 is disposed between an arm part 103 and an auxiliary arm part 104 of the clamp 10.

[0031] As illustrated in FIG. 3, the fastening means includes a cotter pin 20 fitted to pass through through-holes 10a, 10b, and 8a of the arm part 103, the auxiliary arm part 104 of the clamp 10, and the insulator 8, respectively, and an elastic latching rod 22 mounted on the cotter pin 20.

[0032] The elastic latching rod 22 is mounted on the cotter pin 20 and has the form of a coil spring having a length greater than a diameter of each of the through-holes 10a, 10b, and 8a as the form of a rod where both ends of the elastic latching rod 22 protrude from the cotter pin 20.

[0033] The elastic latching rod 22 may have a shape in which gaps between spirals are dense to improve structural strength.

[0034] Also, a dent groove 20a is formed in each of side surfaces facing each other at a position corresponding to each of both the protruding ends of the elastic latching rod 22.

[0035] Also, the elastic latching rod 22 is mounted on the cotter pin 20 in a manner in which the elastic latching rod 22 is fittably coupled to the fitting hole 20b formed in a lower end of the cotter pin 20.

[0036] A function of the fastening structure of the clamp for supporting the power line and the insulator, which is configured as described above, according to the present invention will be described below.

[0037] First, when the clamp 10 and the insulator are fastened, as illustrated in FIG. 4, an end of the insulator 8 is disposed between the arm part 103 and the auxiliary arm part 104 of the clamp 10 to push the cotter pin 20 on which the elastic latching rod 22 is mounted so that the cotter pin 20 passes through each of the through-holes 10a, 10b, and 8a in such a way that the through-holes 10a and 10b of the arm part 103 and the auxiliary arm part 104 and the through-hole 8a of the insulator 8 are aligned with each other.

[0038] Here, the elastic latching rod 22 is elastically bent upward so that the gaps between the both ends of the elastic latching rod 22 protruded from the cotter pin 20 and the cotter pin 20 are narrowed while passing through the through-holes 10a, 10b, and 8a.

[0039] After the elastic latching rod 22 passes through each of the through-holes 10a, 10b, and 8a, both the bent ends are elastically restored to be spread in its original shape.

[0040] Since the elastic latching rod 22 has the length greater than the diameter of the through-hole 10a as illustrated in FIG. 5 after the bent shape of the elastic latching rod 22 is restored, the elastic latching rod 22 is latched on the arm part 103 of the clamp 10 to prevent the cotter pin 20 from being separated from its position without artificial manipulation.

[0041] Also, when the cotter pin 20 inserted into the through-holes 10a, 10b, and 8a is withdrawn to release the fastened state between the clamp 10 and the insulator 8, the worker may grip the cotter pin 20 and pull the cotter pin 20 in the withdrawal direction to withdraw the cotter pin 20 through the process in which the elastic latching rod 22 is elastically bent to pass through each of the through-holes 10a, 10b, and 8a.

[0042] That is, according to the present invention, the clamp 10 and the insulator 8 may be stably fastened through the simple manipulation. On the other hand, the clamp 10 and the insulator 8 may be easily separated from each other through the simple manipulation.

[0043] Furthermore, as illustrated in FIG. 6, fixing of the elastic latching rod 22 is realized in a manner in which a tool T and the like may strike a bottom surface of the cotter pin 20 to allow the inside of the fitting hole 20b to protrude and deform so that the elastic latching rod 22 is fitted into the fitting hole 20b through the physical pressure to the elastic latching rod 22 by the protrusion.

[0044] As described above, when fixing the elastic latching rod 22, material characteristics of the cotter pin 20 made of a metal material are generally used. When compared to a method for fixing the elastic latching rod 22 to the cotter pin 20 by using an adhesive or the like, the above-described fixing method may have features that a work speed is faster, and the fixed state is firmly maintained.

[0045] The fastening structure of the clamp for supporting the power line and the insulator may be applied to all components having a separable connection configuration used for supporting the power line as well as the above-described fasting structure between the clamp 10 and the insulator 8.

REFERENCE SIGNS LIST

[0046] 8: insulator [0047] 10: clamp [0048] 103: arm part [0049] 104: auxiliary arm part [0050] 20: cotter pin [0051] 20a: dent groove [0052] 20b: fitting hole [0053] 22: elastic latching rod