CN204156423U - 500kV jumper string wire clamp thread-lifting hook - Google Patents

Abstract

The 500kV jumper line hook, including a mountain-shaped pointed-top portal frame force-bearing part (1) formed by bending a metal rod, and a horizontal support rod (2) set at the bottom of the mountain-shaped frame in the force-bearing part , U-shaped hook (6) formed by bending 360° outward at the bottom of the side bar on both sides of the portal frame of the force-bearing part (6), safety pin (3) set on the U-shaped hook (6), installed on the U-shaped hook ( 6) The free end stops against the nut (4) on the safety pin (3). The utility model has the advantages of simple structure, light weight and small size. When operating and using, it is easy to cooperate with the tightening screw rod and the insulator fixture. It does not need steel sleeves, pulleys, lifting ropes and other tools to cooperate, and only two people can carry the required tools. tower and complete the insulator replacement work, which can save a lot of tools and 3 operators.

Description

500kV jumper string clip hook

technical field

The utility model relates to the technical field of tools for replacing jumper insulators in power transmission lines, in particular to a tool for replacing the first insulator on the side of a 500kV jumper string conductor.

Background technique

In the prior art, when replacing the first insulator on the wire side of a 500kV jumper string, a chain hoist is usually used to lift the jumper string, the weight and the wire as a whole, and replace it when the jumper string is loose. Special tool for replacing the first insulator on the conductor side of a jumper string. Due to the use of chain hoists in the prior art, tools such as upper and lower steel sleeves, upper and lower cars, and lifting ropes (tower head to ground height) are required. There are many tools, weighing about 28kg, which is not convenient for mountain road transportation and replacement work, and will also consume Workers have a lot of physical strength; due to the large number of tools, the layout of each force point, steering block, and rope is complicated, and the work preparation time is long; because the chain hoist needs to string jumpers (500kV jumper strings are generally 34 pieces of insulators, about 5 meter), the weight and the wire are lifted as a whole, and the chain has a long stroke. Whether it is tightening or loosening, it takes a lot of time; the lifting rope needs to be controlled by 3 people on the ground, plus 2 people in the sky, so this operation requires at least 5 people. people. In short, due to the large number of heavy tools, long preparation and operation time, time-consuming and labor-consuming, and many personnel required, it is very troublesome to replace the first insulator on the wire side of the jumper string, which is not conducive to replacement work and high-altitude operation. Operation.

Contents of the invention

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art and provide a light, small, fast and efficient tool for replacing the first insulator on the side of the 500kV jumper string wire, specifically a 500kV jumper wire string clip lifting hook .

The purpose of this utility model is achieved through the following technical solutions.

The 500kV jumper line clamp hook includes a mountain-shaped pointed-top portal frame force-bearing part formed by bending a metal rod, a horizontal support rod set at the bottom of the mountain-shaped frame in the force-bearing portal frame, and a force-bearing portal frame. A section of the bottom of the side bars on both sides of the frame is a U-shaped hook formed by bending 360° outward, a safety pin set on the U-shaped hook, and a nut installed on the free end of the U-shaped hook to stop on the safety pin.

The included angle α of the mountain-shaped spire of the force-bearing part of the utility model is 120°, and the inner angle β between the slope section of the mountain-shaped spire and the side bar of the portal frame is 120°.

The utility model has the advantages of simple structure, light weight and small size. When operating and using, it is easy to cooperate with the tightening screw rod and the insulator fixture. It does not need steel sleeves, pulleys, lifting ropes and other tools to cooperate, and only two people can carry the required tools. tower and complete the insulator replacement work, which can save a lot of tools and 3 operators.

The utility model will be further elaborated below in conjunction with the accompanying drawings and embodiments.

Description of drawings

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

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the top view of safety pin in the utility model;

Fig. 4 is the schematic diagram that the utility model is assembled on the tightening screw rod;

Fig. 5 is a schematic diagram when the utility model is used to replace the first insulator on the wire side of the 500kV jumper string.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model includes a mountain-shaped pointed-top portal frame stress member 1 formed by bending a metal rod, and a lateral support arranged at the bottom of the mountain-shaped frame in the stress-carrying member portal frame. Rod 2, the U-shaped hook 6 formed by bending the bottom section of the side rod on both sides of the portal frame of the force-bearing part 360° outward, the safety pin 3 set on the U-shaped hook 6, and the free end stopper installed on the U-shaped hook 6 Nut 4 on safety pin 3. The included angle α of the mountain-shaped spire of the stress member is 120°, and the inner angle β between the slope section of the mountain-shaped spire and the side bar of the portal frame is 120°.

The utility model can be made in the following manner. First, bend the high-strength round steel with a diameter of 16mm and a length of 120cm to ∠120° in the middle to form the angle α of the mountain-shaped spire, and then bend the middle to 12cm from both sides to ∠120°, which is the angle β. Bend inward at 13cm to form a U-shaped hook 6 with a diameter of 10cm as the main stress member 1, and then weld a high-strength round steel with a diameter of 16mm in the portal frame of the main stress member 1 as the support rod 2. Cut a 4mm steel plate into two safety pins and punch two Ф17.5mm eyelets 5 on them, insert the safety pin 3 into the main stress member 1, and finally tighten the nut 4.

When the utility model is used to replace the first insulator on the wire side of the 500kV jumper string, as shown in Figure 4 and Figure 5, the two U-shaped hooks of the utility model are respectively fixed on the clamps 7 of the two upper sub-wires, And fasten the safety pin, then install the insulator clamp 8 and the tightening screw rod 9 in place, then connect the mountain-shaped top of the utility model with the tightening screw rod, tighten the tightening screw rod after each part is connected, Until there is a movable gap between the first sheet insulation 10 of the wire side and the connecting bowl head 11, the old insulator can be taken off this moment. In the same way, when the new insulator is carried, operate in the same way.

By adopting the utility model, only 2 people can carry the required tools to the tower and complete the insulator replacement work, which can reduce a large number of tools and 3 operators. Since only 4 pieces of insulators need to be lifted to tighten the wire rod, compared with the original hoist lifting 34 pieces, the working range is greatly reduced and the working time can be greatly shortened. The most important thing is that the working range of this method is small, only 4 pieces of insulators, thus effectively ensuring the safety electrical clearance, which can be used for live work, and fills the gap that there is currently no special tool for replacing the first piece of insulator on the wire side of the jumper string .

Claims (2)

1.500kV jumper string wire clamp thread-lifting hook, it is characterized in that, to include bottom chevron pinnacle portal frame stressed member (1) be bent to form by a Metallic rod, the side lever being arranged at transverse support bar (2) in stressed member portal frame bottom chevron, stressed member portal frame both sides one section and be bent outwardly 360 ° of U-shaped hooks (6) formed, the safety plug (3) be sleeved on U-shaped hook (6), be installed on the nut (4) of U-shaped hook (6) free end backstop on safety plug (3).

2. 500kV jumper string wire clamp thread-lifting hook according to claim 1, is characterized in that, the angle α on stressed member chevron pinnacle is 120 °, and the interior angle β between the slope section on chevron pinnacle and the side lever of portal frame is 120 °.