CN202353094U - Closed fixture for replacing insulator - Google Patents

Abstract

The utility model relates to a closed fixture for replacing insulators, which at least includes a clamp that can be placed on the steel cap of the insulator, and two telescopic pull rods hinged at both ends of the clamp; a bracket, one end of which has a slot, The bracket can be stuck on the right-angle hanging plate by the back side of the right-angle hanging plate fixing the insulator string through the card slot, and the outer end of the card slot can be hinged with a mounting hole on the right-angle hanging plate through a bolt; the two pieces are respectively hinged on two telescopic The connecting plate on the pull rod, the other end of one connecting plate is hinged with the opposite end of the bracket draw-in groove, and the other end of the connecting plate can be hinged with the right-angled hanging plate through a mounting hole on the right-angled hanging plate. The two mounting holes on the right-angle hanging plate can be used to replace a clip with a bracket to realize a closed connection and replace the end insulator.

Description

Closed fixture for replacing insulators

technical field

The utility model relates to a jig for replacing insulators on a high-voltage transmission line, in particular to a closed jig for replacing insulators. the

Background technique

At present, the insulators used in 220kV transmission lines are mainly composite insulators, but a large part of them still use glass insulators, especially glass insulators are more common for strain towers. The insulation level and tensile strength of glass insulators are relatively high, but they are prone to self-explosion during use. The usual method for replacing a single strain glass insulator is to use a closed line clamp to clamp and tighten the two adjacent insulators of the self-explosive insulator, so that the residual part of the self-explosive insulator is loosened, and then replaced with a new insulator. Chinese patent CN201946908U discloses just such a closed clamp, but using this method, the clamp must be fixed by the steel caps of the insulators at both ends, so the insulators at both ends of the insulator string cannot be replaced. Another method for replacing the terminal insulators is to use a big knife clamp to hold up and replace the whole string of insulators. However, due to the use of a heavy big knife clamp at high altitude, the operation is inconvenient and the work risk is increased. the

Contents of the invention

The purpose of the utility model is to provide a closed fixture for replacing insulators, which can be used to replace the insulators at both ends of the insulator string. the

The utility model is realized in the following way: at least one clip that can be placed on the steel cap of the insulator, and two telescopic pull rods hinged at both ends of the clip; a bracket, one end of the bracket is provided with a slot through which the bracket can be fixed The back side of the right-angle hanging plate of the insulator string is stuck on the right-angle hanging plate, and the outer end of the card slot can be hinged with a mounting hole on the right-angle hanging plate through a bolt; two connecting plates are respectively hinged on two telescopic pull rods, The other end of one connecting plate is hinged with the opposite end of the bracket draw-in slot, and the other end of the other connecting plate can be hinged with the right-angled hanging plate through a mounting hole on the right-angled hanging plate. the

In order to facilitate distance adjustment, each connecting plate is provided with a plurality of mounting holes for matching with bolts along the length direction. the

It can be seen from the above technical scheme that the utility model fully utilizes the two mounting holes on the existing right-angle hanging plate to fix the connecting plate and the bracket respectively. Form a rigid connection with another connecting plate, thereby replacing the clip, the insulator at the end of the insulator string can be replaced. Another clip is used instead of the bracket to be hinged on the two connecting plates, which can be used as a common closed clip to replace other insulators. Not only the structure is simple, but also safe and convenient to use. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Fig. 2 is a schematic structural view of the bracket in Fig. 1 in direction A. the

Detailed ways

As shown in FIG. 1 , the utility model includes a clip 6 , two telescopic pull rods, two connecting plates 21 , 22 , and a bracket 1 . The structure of the clip 6 can be found in Chinese patent CN201946908U. The two telescopic pull rods are respectively composed of two-way screw rods 41, 42 and sleeve pipes 31, 51, 32, 52 threaded at both ends thereof. The two connecting plates 21, 22 are hinged, and the handles 411, 421 are fixed in the middle of the two two-way screw rods 41, 42 respectively; one end of the support 1 has a slot 14, see Fig. 2, the width of the slot 14 is larger than that of the fixed insulator string 8 The thickness of the right-angle hanging boards 9 and 7, the depth of the card slot 14 is not greater than the distance from the mounting hole 71 or 72 at the lower end of the right-angle hanging board 7 to the corner end where the suspension point of any insulator string 8 is located, and the outer side wall of the card slot 14 is provided with a The mounting hole 13 that the right-angle hanging plate mounting hole 71 or 72 cooperates, the support 1 has the mounting hole 11 hinged with the connecting plate 21 at the opposite end of the draw-in groove 14 . the

Each connecting plate 21, 22 is provided with a plurality of mounting holes 211 for matching with bolts along the length direction, which can be interchanged, and the bracket 1 can select different positions of the mounting holes 211 for connection. the

During use, as shown in Figure 1, the clip 6 is set on an insulator steel cap on the outside of the end insulator 81 to be replaced, and then one end of the connecting plate 22 is fixed on the On the right-angle hanging plate 9, the support 1 is set on the back side 91 of the right-angle hanging plate by the draw-in groove 14, and the mounting hole 13 at the front end and another mounting hole on the right-angle hanging plate 9 are passed through the bolt 11 to fix the support 1 on the right-angle hanging plate 9. On the right-angle hanging plate 9, the two-way screw mandrels 41, 42 are driven to rotate through the rotating handles 411, 421 respectively, so that the clip 6 and the support 1 are tightened toward the middle, and the insulator 81 at the end can be replaced. the

Replace the bracket 1 with another clip and use it as a common closed clip, which can be hinged on the two connecting plates 21, 22, or directly hinged on the two sleeve pipes 31, 32 to get final product. the

Claims (2)

1. The closed clamp for replacing the insulator, at least includes a clamp (6) that can be placed on the steel cap of the insulator, and two telescopic pull rods hinged at both ends of the clamp (6); it is characterized in that it also supports (1), one end of the support (1) has a draw-in slot (14), and the support (1) can be stuck on the right-angle hanger (9) by the right-angle hanger backside (91) of the fixed insulator string (8) through the draw-in slot (14) ), and the outer end of the card slot (14) can be hinged with a mounting hole on the right-angled hanging plate (9) through a bolt (11); ), the other end of a connecting plate (21) is hinged with the opposite end of the bracket draw-in groove (14), and the other end of the connecting plate (22) can pass through a mounting hole on the right-angled hanging plate and the right-angled hanging plate (9) Hinged. 2. The closed fixture for replacing insulators according to claim 1, characterized in that: each connecting plate (21, 22) is provided with a plurality of mounting holes (211) for matching with bolts along the length direction.

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