CN202206070U - Aerodynamic insulator replacing tool for steel tower side phase cross arms - Google Patents

Abstract

The utility model discloses an aerodynamic insulator replacement tool used for the cross-arm of the side phase of an iron tower. , there is a positioning pin on the lower right side, which is made of aerospace aluminum-manganese alloy material. According to the size of the aerodynamic insulator disk diameter, it is symmetrically installed on both sides of the aerodynamic insulator string on the cross arm. On the current running line , without changing the structure of the tower, the aerodynamic insulator string can be replaced with electricity to ensure the normal power supply of the transmission line.

Description

Aerodynamic Insulator Replacement Tool for Tower Side Arms

technical field

The utility model relates to a transmission line, in particular to a replacement tool for an aerodynamic insulator on the transmission line.

Background technique

Because the hanging strings of insulators installed on the 220KV transmission line in the past are likely to cause line tripping after freezing, so after the ice disaster in the past few years, the hanging strings of insulators on the 220KV transmission line were changed to aerodynamic insulators to ensure the safety of the transmission line. The power supply is normal, but the main body of the original fixture for replacing insulators is an integral structure, and its installation size is not adjustable. However, the diameter of the aerodynamic insulator is large, and the original fixture can no longer be used. At present, the only way to replace the air is to cut off the power. Dynamic insulators have a negative impact on the normal operation and reliability of the line.

Utility model content

The utility model provides a replacement jig with a split structure, which adopts the method of live work to complete the replacement of aerodynamic insulator strings without affecting the normal power supply of the transmission line.

The utility model includes a fixture, which is a split structure, symmetrically installed on both sides of the iron tower side cross-arm, the upper left side of a single fixture is provided with a pin hole, a semi-long round hole and a through hole for installation, and the lower right side is provided with a Locating pin holes.

The material of the fixture is aerospace aluminum-manganese alloy, the rated load is 25kN, the static test load is 62.5kN, and the safety factor is not less than 2.5.

The fixture of the utility model is made of aerospace aluminum-manganese alloy material as a split structure, and is symmetrically installed on both sides of the aerodynamic insulator string on the cross arm according to the size of the aerodynamic insulator disk diameter, on the current operating line , without changing the structure of the tower, the aerodynamic insulator string can be replaced with electricity to ensure the normal power supply of the transmission line.

Description of drawings

Fig. 1 is the assembly diagram of the working state of the utility model.

Fig. 2 is a schematic front view of the fixture of the present invention.

FIG. 3 is a schematic left view of FIG. 2 .

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model is installed on the side arm 1 of the iron tower, including a fixture 2, a screw rod 3, an insulating pull rod 6 and a hook 7, and the lower end of the screw rod 3 is connected to the insulating pull rod 6 , the lower end of the insulating pull rod 6 is connected to the hook 7; when installing, first install the clamp 2 symmetrically on the iron tower side phase cross arm 1 through the pin rod 25 passing through the positioning pin hole 24, and the position is symmetrical with respect to the aerodynamic insulator string 5 , then the assembly parts of the screw mandrel 3, the insulating pull rod 6 and the hook 7 are installed in the installation through hole 23 on the fixture 2, and the pin 26 passing through the pin hole 21 is tightened to clamp the screw mandrel 3, and the screw mandrel 3 is processed There is a bayonet, which is stuck in the semi-oblong hole 22, and is used to limit the circumferential rotation of the screw mandrel 3; rotate the wrench 4 on the screw mandrel 3 to adjust the length of the screw mandrel 3 so that the hook 7 hooks the wire 8.

The upper end of the aerodynamic insulator string 5 is connected and fixed to the crossarm 1 through the ball head 9, the bowl head 10 and the elastic pin 11, and the lower end is connected to the wire 8 through the ball head 9, the bowl head 10 and the elastic pin 11. stable. When replacing the aerodynamic insulator string 5, first pull out the elastic pins 11 at the upper and lower ends of it, and then rotate the wrench 4 on the screw rod 3 to move the screw rod 3 upward, driving the insulating pull rod 6 and the hook 7 to move upward, and the hook 7 hook Hold the wire 8 upward, so that the bowl head 10 installed on the wire clamp 12 is upward, and then the aerodynamic insulator string 5 is pulled out from the side gap of the bowl head 10 to replace the bad aerodynamic insulator string 5, and then the new The aerodynamic type insulator string 5 can be installed in the reverse order of removal.

Claims (2)

1. An aerodynamic insulator replacement tool for the cross arm of the iron tower, including a fixture (2), characterized in that: the fixture (2) is a split structure, symmetrically installed on the side of the tower bear the two ends; the upper left side of a single fixture (2) is provided with a pin hole (21), a semi-long circular hole (22) and a through hole for installation (23), and the lower right side is provided with a positioning pin hole (24). 2. The aerodynamic insulator replacement tool for side phase cross arms of iron towers according to claim 1, characterized in that: the material of the fixture (2) is aerospace aluminum-manganese alloy, the rated load is 25kN, and the static test load 62.5kN, the safety factor is not less than 2.5.

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