CN205070300U - Power transmission line insulator changes and uses fixture - Google Patents

Abstract

The utility model discloses a power transmission line insulator changes and uses fixture relates to electronic component change instrument technical field, preceding card (1) and the back card (4) connected including two rhizoid pole (2) both ends, two lead screw (2) middle part is equipped with handle (3) that rotatory this lead screw was used, the inside of preceding card (1) is equipped with inside callipers (5). Compared with the prior art, the utility model, the method that can solve the current transmission line of change monolithic insulator wastes time and energy, and the replacement cost is high, problem that the wasting of resources is big.

Description

Fixtures for replacing insulators on transmission lines

technical field

The utility model relates to the technical field of electronic component replacement tools, in particular to a tool for replacing damaged insulators in 220 kV to 500 kV transmission lines.

Background technique

The insulator is an electronic component used to support the wire and make the wire and the earth, the pole tower have a sufficient safety distance and insulation, and has a certain electrical insulation strength and mechanical strength. In the operation of transmission lines, insulators are exposed to the wild and work under long-term strong electric fields and tension, and zero values are prone to occur. Due to the characteristics of the glass insulator, it will self-explode when the zero value occurs. The occurrence of zero value in the same string of insulators will affect the voltage distribution of the entire string of insulators, and promote the deterioration and zero value of other insulators. When the number of good insulator strings does not meet the safety regulations, it will threaten the safe operation of the transmission line, so it must be replaced regularly Line self-explosive insulators.

Existing maintenance work for replacing self-explosive insulators generally uses special closed fixtures and sub-mother fixtures for replacement. Since there is no size standard for insulators of the same tonnage, the shapes and diameters of the steel caps of insulators produced by different manufacturers are different. The diameters are also different, which means that if you want to replace this batch of insulators, you must take a piece of insulator to the fixture manufacturer to make the inner clamps of the closed fixture and the mother and child fixture according to the shape and diameter. A lot of work is added, and the production of these internal cards increases costs and wastes resources. In addition, the transmission line has been in operation for a long time, and after many batches of insulators have been replaced, it is prone to the problem that the closed clamps used and the sub-mother clamps do not fit. When the tool does not fit, the time-consuming and labor-intensive method can only be used to replace the damaged insulator, which is very troublesome.

Utility model content

The problem to be solved by the utility model is to provide a jig for replacing insulators of transmission lines to solve the problems of time-consuming and labor-intensive replacement methods of insulators of transmission lines, high replacement costs and large waste of resources.

In order to solve the above problems, the technical solution of the utility model is: the jig for replacing insulators of transmission lines includes a front clamp and a rear clamp connected at both ends of two screw rods, and the middle part of the two screw rods is provided with a screw rod for rotating the screw rod. The handle, the inside of the front card is provided with an inner card.

Among the above technical solutions, a more specific solution is: the inner card is connected to the front card through four positioning pins.

Further: the inner wall of the inner card is perpendicular to the upper surface of the inner card.

Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

This jig for transmission line insulator replacement adopts the way of the card inner card core before replacement to adapt to insulator steel caps of different shapes and diameters. The inner card is divided into standard specifications according to the shape characteristics and diameters of the insulator steel caps. All tonnage insulators can be replaced with this jig, and there is no need to prepare multiple sets of jigs for backup according to the size and caliber of the porcelain bottle head, which saves time and material resources, and is very convenient to use.

Description of drawings

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is a top view of the combination of the front card and the inner card of the utility model embodiment;

Fig. 3 is a sectional view along line A-A of Fig. 1 .

detailed description

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:

As shown in Fig. 1, Fig. 2 and Fig. 3, the clamp for replacing insulators of transmission lines includes a front clamp 1 and a rear clamp 4 connected at both ends of two screw rods 2, and the middle part of the two screw rods 2 is provided with a rotating clamp. The handle 3 that the screw mandrel is used, the inside of the front card 1 is provided with an inner card 5, and the insulator steel cap 7 can be clamped in the inner card 5. The inner card is connected with the front card 1 through four positioning pins 6 . The inner wall of the inner card 5 is perpendicular to the upper end surface of the inner card 5. This shape can be applied to more insulator steel caps of different shapes, and is not affected by the shape of the insulating steel cap.

Scale and vernier on the bayonet part of the inner card 5, the scale is divided into +6mm, +4.5mm, +3mm, +1.5mm, standard, -1.5mm, -3mm, -4.5mm, - according to the standard inner card 5 specification 6 mm. On the basis of the standard, the negative specification of the inner card can continue to increase to the insulator used below the diameter of the insulator of the applicable standard card, and the positive specification can be increased to the limit of the inner card specification used by the front card within an appropriate range according to the size of the front card.

There is a movement gap of 3 mm between the front card 1 and the inner card 5, which is fixed by pushing the positioning pin 6, and the wall of the inner card 5 is set vertically. , according to the collected data to select the inner card core. As long as insulators of the same voltage level and tonnage can be replaced with this fixture, there is no need to prepare multiple sets of fixtures for backup according to the size and caliber of the porcelain bottle head, which saves time and material resources, and is very easy to use. convenient.

Claims (3)

1. an electric transmission line isolator replacing jig, it is characterized in that: the front card (1) and the rear card (4) that comprise two rhizoid bar (2) two ends connections, two described screw mandrel (2) middle parts are provided with the handle (3) rotating this screw mandrel, and before described, the inside of card (1) is provided with interior card (5).

2. electric transmission line isolator replacing jig according to claim 1, is characterized in that: described interior cartoon cross four alignment pins (6) with described before block (1) and be connected.

3. electric transmission line isolator replacing jig according to claim 1, is characterized in that: the inwall of described interior card (5) is perpendicular to the upper surface of described interior card (5).