CN107069508B - Auxiliary tool for replacing post insulator of isolating switch under 110kV - Google Patents

Abstract

The auxiliary tool for replacing the post insulator of the isolating switch of 110kV and below comprises a base, a suspension arm, a vertical rod and a rope, wherein the bottom of the vertical rod is connected with the base, and the top of the vertical rod is connected with the suspension arm; the vertical rod at the lower part of the suspension arm is provided with a locating pin, two ends of the suspension arm are respectively provided with a fixed pulley, one fixed pulley is connected with a movable pulley lifting hook through a rope, one end of the rope bypasses the two fixed pulleys and the movable pulley and is fixed on a U-shaped ring at the upper end of the suspension arm, and the other end of the rope is controlled by manpower. The invention has the advantages that: the device has the advantages of small volume, light weight, convenient carrying and strong applicability, and can be suitable for compact sites and various power failure modes; the knife switch can be firmly fixed on a knife switch framework with any size; the rotatable suspension arm is combined with the positioning pin, so that the suspension point selection is more reasonable; the pulley block is applied, the actual pulling force theoretical value is only 1/4 of the weight of the hung object, and the station of the manual pull rope is more random; the operation is simple and convenient, and the product can be used without training.

Description

Auxiliary tool for replacing post insulators of 110kV and below disconnectors

technical field

The invention relates to an auxiliary tool for replacing post insulators of 110kV and below isolating switches, which belongs to the field of electric power applications.

Background technique

At present, the replacement of post insulators of 66kV and 110kV disconnectors mostly depends on building maintenance platforms or using poles. It is time-consuming and labor-intensive to build the maintenance platform, and it is extremely inconvenient and inefficient when changing the job site. When using the holding pole, it is easy to fall over and hurt people or equipment, and there is a danger of touching live equipment. Miniature cranes are often used at home and abroad, but they are expensive and complicated to operate, and personnel need to be certified to work, and they cannot meet the needs of existing power outage methods and compact sites.

Contents of the invention

In view of the above problems, the present invention provides an auxiliary tool for replacing post insulators of 110kV and below isolating switches, which solves the problems of unsafety and low efficiency caused by using poles or building maintenance platforms in current field operations.

Auxiliary tools for replacing post insulators of 110kV and below isolating switches, including bases, booms, poles and ropes, the bottom of the pole is connected to the base, the top of the pole is connected to the boom; There are positioning pins, fixed pulleys are installed at both ends of the boom, one of the fixed pulleys is connected to the movable pulley hook through a rope, and one end of the rope is passed around two fixed pulleys and a movable pulley and fixed on the U-shaped ring at the upper end of the boom , the other end of the rope is controlled by manpower.

Wherein, the base includes a cross bar, a vertical bar and a U-shaped structure composed of connecting plates, the cross bar is a threaded cross bar passing through the U-shaped structure, and the base is fixed on the channel steel by rotation, and plays a supporting role Function; the vertical bar is used to adjust the rotation of the horizontal bar in and out.

Wherein, the boom is detachably connected to the vertical rod, the vertical rod is a hollow cylinder structure, the lower end of the boom is a solid rod smaller than the inner diameter of the vertical rod, and a bearing is installed at the connecting part of the solid rod and the vertical rod. The solid rod has an interference fit, and the outer diameter of the bearing is the same as the outer diameter of the vertical rod.

Wherein, the locating pin is a threaded rod, the locating pin is connected to the vertical rod through a nut, and the positioning pins on both sides of the vertical rod are rotated to push against it, so as to realize the fixing of the boom.

Wherein, the movable pulley is arranged inside the movable pulley hook, the movable pulley is connected with the fixed pulley through a rope, and the movable pulley hook is connected with the post insulator.

Compared with the prior art, the advantages and effects of the present invention are as follows: small size, light weight, easy to carry, strong applicability, applicable to compact sites and various power failure methods; can be firmly fixed on the knife gate frame of any size ; The rotatable boom combined with the positioning pin makes the selection of the lifting point more reasonable; the application of the pulley block, the actual theoretical value of the pulling force is only 1/4 of the weight of the object to be lifted, and the position of the human pull rope is more random; the operation is simple and no training is required use.

Description of drawings

Fig. 1 is an overall structural diagram of the auxiliary tool for replacing post insulators of disconnectors of 110kV and below according to the present invention.

Fig. 2 is a structural diagram of the boom of the auxiliary tool for replacing post insulators of 110kV and below isolating switches of the present invention.

Fig. 3 is a structural diagram of the base of the auxiliary tool for replacing post insulators of 110kV and below isolating switches of the present invention.

In the figure: 1, base; 2, boom; 3, fixed pulley; 4, movable pulley hook; 5, positioning pin; 6, vertical rod; 7, rope; 8, solid rod; Rod; 11, connecting plate; 12, bearing.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1-3, the auxiliary tool for replacing the pillar insulators of 110kV and below disconnectors includes a base 1, a boom 2, a pole 6 and a rope 7. The bottom of the pole 6 is connected to the base 1, and the top of the pole 6 is connected to the base 1. The boom 2 is connected; the vertical rod 1 at the bottom of the boom 2 is provided with a positioning pin 5, the positioning pin 5 is a threaded rod, the positioning pin 5 is connected with the vertical rod 6 through a nut, and the positioning pin 5 on both sides of the vertical rod 6 is rotated to push it up The boom 2 is used to fix the boom 2; both ends of the boom 2 are equipped with fixed pulleys 3, and one of the fixed pulleys 3 is connected with the movable pulley hook 4 through a rope 7, and one end of the rope 7 bypasses the two fixed pulleys 3 and a movable pulley are fixed on the U-shaped ring at the upper end of the boom 2, the movable pulley is arranged inside the movable pulley hook 4, the movable pulley is connected with the fixed pulley 3 through the rope 7, and the movable pulley hook 4 is connected with the pillar insulator; the other end of the rope 7 controlled by humans.

The base 1 includes a cross bar 9, a vertical bar 10 and a U-shaped structure composed of a connecting plate 11. The cross bar 9 is a threaded cross bar passing through the U-shaped structure. The base 1 is fixed on the channel steel by rotation, and plays a role Support function; the vertical bar 10 is used to adjust the rotation of the cross bar 9 in and out. The boom 2 is detachably connected with the vertical rod 6, the vertical rod 6 is a hollow cylinder structure, the lower end of the boom 2 is a solid rod 8 smaller than the inner diameter of the vertical rod 6, the solid rod 8 can be inserted into the vertical rod 6, and the solid rod 8 and the The connecting part of the vertical rod 6 is equipped with a bearing 12, the inside of the bearing 12 is interference fit with the solid rod 8, the outer diameter of the bearing 12 is the same as that of the vertical rod 6, when the solid rod 8 is inserted into the vertical rod 6, the bearing 12 is placed on the The top of the vertical rod 6; only need to manually rotate the boom 2 during use, and the adjustment of the angle can be realized.

The auxiliary tool has a total length of 1.6m and a weight of 13kg. It mainly includes a base 1, a rotatable boom 2, a fixed pulley 3, a movable pulley hook 4, a positioning pin 5, a pole 6 and a rope 7. The base 1 consists of 5 pieces with a width of 140mm and a thickness of The connecting plate 11 of 6mm can be firmly fixed on the knife gate frame of any size. When in use, first insert the rotatable boom 2 into the upper part of the pole 6, then fix the auxiliary tool base 1 on the knife gate frame, then hang the post insulator on the auxiliary tool movable pulley hook 4 with a rope, and pass the rotatable The boom 2 confirms the best lifting point, then rotates the positioning pin 5 to fix the boom 2, and uses the rope 7 and the pulley block to expand the working surface and reduce manpower, thereby completing the replacement work safely and efficiently.

The invention was completed in August 2016. During the autumn inspection operation of Fushun Power Supply Company, 11 groups of 66kVGW5-72.5 type disconnectors were replaced in total. Before using this tool, it takes 4 people and 3 man-hours to complete a set of knife switch replacement of this type, but it only takes 3 people and 1 man-hour to complete it with this tool. A single group replacement saves 2 man-hours of time, the labor cost is reduced from 300 yuan to 75 yuan, the efficiency is increased by 400%, and the labor cost is reduced to 25%. In the future, Fushun Power Supply Company will continue to replace the post insulators of this type of isolating switch, which will greatly save time and labor costs.

Claims (1)

1.110kV and below isolator pillar insulator change appurtenance, its characterized in that: the lifting device comprises a base, a lifting arm, a vertical rod and a rope, wherein the bottom of the vertical rod is connected with the base, and the top of the vertical rod is connected with the lifting arm; the vertical rod at the lower part of the suspension arm is provided with a positioning pin, two ends of the suspension arm are provided with fixed pulleys, one fixed pulley is connected with a movable pulley lifting hook through a rope, one end of the rope bypasses the two fixed pulleys and the movable pulley and is fixed on a U-shaped ring at the upper end of the suspension arm, and the other end of the rope is controlled by manpower;

the base comprises a cross rod, a vertical rod and a U-shaped structure formed by connecting plates, wherein the cross rod is a threaded cross rod penetrating through the U-shaped structure, and the base is fixed on the channel steel in a rotating mode and plays a supporting role; the vertical rod is used for adjusting the rotation of the cross rod to enter and exit;

the suspension arm is detachably connected with the vertical rod, the vertical rod is of a hollow cylinder structure, the lower end of the suspension arm is a solid rod smaller than the inner diameter of the vertical rod, a bearing is arranged at the joint part of the solid rod and the vertical rod, the inside of the bearing is in interference fit with the solid rod, and the outer diameter of the bearing is the same as the outer diameter of the vertical rod;

the positioning pin is a threaded rod, is connected with the vertical rod through a nut, and is rotated and jacked through the positioning pins at the two sides of the vertical rod, so that the fixing of the suspension arm is realized;

the movable pulley is arranged in the movable pulley lifting hook, the movable pulley is connected with the fixed pulley through a rope, and the movable pulley lifting hook is connected with the post insulator;

the base consists of 5 connecting plates.