CN204517271U - A kind of for the special bearing tool of power transmission line steel pipe rod replacing insulator under electrified - Google Patents

Abstract

The utility model belongs to the technical field of power grids, in particular to a load-bearing tool for live replacement insulators of steel pipe poles for power transmission lines. The beam, and the cable-stayed beam connecting the load-bearing upper beam and the load-bearing lower beam, the load-bearing lower beam is placed horizontally on the upper layer of the steel pipe rod cross-arm head, and equidistant adjustable long holes are provided on both sides for adjusting the fastening bolts The position to be installed and the width of the cross-arm head of the steel pipe pole should be adapted. Set a fastening lower beam parallel to the load-bearing lower beam, place it horizontally on the lower layer of the steel pipe pole cross-arm head, and equidistantly adjust long holes on both sides. In order to adapt to the width of the cross-arm head of the steel pipe rod, the fastening lower cross beam and the load-bearing lower cross beam are fixed as a whole through the adjustable long hole through fastening bolts. The utility model changes the work items that can be completed only after power failure in the past, and can be carried out on live lines, thereby improving the reliability of power supply.

Description

A special load-bearing tool for live replacement of insulators on steel pipe poles for power transmission lines

technical field

The utility model belongs to the technical field of power grids, in particular to a special load-bearing tool for replacing insulators with steel pipe rods of power transmission lines.

Background technique

The line of steel pipe pole has the advantages of beautiful appearance, small footprint, and not easy to lose the tower material, but it also has disadvantages such as high cost, inconvenient maintenance, and inconvenient transportation. It has been used in transmission lines in recent years, but not very widely. Such transmission lines are only erected in a few areas or when there are special needs. The insulation tools and operating methods used in the installation and maintenance of traditional live work have not been updated to the new standard in time. Especially when it is necessary to hang the lifting point at the head of the steel pipe rod cross arm, because the steel pipe rod is similar to a cuboid component, the head of the cross arm is smooth and there is no installation hole, so it is difficult to launch the live operation. The load-bearing upper beam of the tower head jig used for the live work of the traditional steel pipe tower for live work and replacement of insulators is designed horizontally and cannot withstand the gravity of large spans and heavy loads.

Utility model content

The technical problem to be solved by the utility model is to provide a special load-bearing tool for live replacement of insulators on steel pipe poles of power transmission lines that can bear the gravity of large spans and heavy loads.

The utility model is realized in the following way. A special load-bearing tool for replacing insulators on steel pipe poles for power transmission lines. The cable-stayed beam connecting the load-bearing upper beam and the load-bearing lower beam, the load-bearing lower beam is placed horizontally on the upper layer of the steel pipe rod cross-arm head, and equidistant adjustable long holes are provided on both sides for adjusting the installation of fastening bolts. position and adapt to the width of the cross-arm head of the steel pipe pole, set a fastening lower beam parallel to the load-bearing lower beam, place it horizontally on the lower layer of the steel pipe pole cross-arm head, and equidistantly adjust long holes on both sides to adapt to the steel pipe The width of the pole cross-arm head is fixed as a whole through the adjustable long hole through the fastening bolt between the fastening lower cross beam and the load-bearing lower cross beam.

Further, tool suspension points are provided at both ends of the load-bearing lower beam for hanging insulating tools, and the bolts of the suspension points can be unscrewed to facilitate connection of various insulating tools.

Further, two reinforcing inclined beams are arranged in the frame of the trapezoidal load-bearing beam.

Compared with the prior art, the utility model has the beneficial effects that:

1. The utility model has changed the work items that need to be completed only after power failure in the past, and can be carried out on the live line, which improves the reliability of power supply;

2. The utility model can be adapted to the installation of steel pipe pole cross-arm heads of all 220 kV and 66 kV transmission lines in the region, and is suitable for all steel pipe-type pole tower transmission lines with large spans, large loads, single conductors and multiple conductors, and improves universality;

3. When the utility model is installed on the head of the cross-arm of the steel pipe pole, it also effectively increases the distance between the live wire and the ground, the air gap, enhances the insulation coefficient and insulation level of the insulating tool, and improves the safety;

4. When the utility model is used on a power outage line, it can improve the difficulty in installing insulators, fastening and unfastening caused by the low lifting point of the tackle, and improves the range of operability.

Description of drawings

Fig. 1 is a schematic diagram of the tool structure provided by the embodiment of the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1, a load-bearing tool for live replacement of insulators on steel pipe poles for power transmission lines. The cable-stayed beam 3 of the force upper beam 2 and the load-bearing lower beam 7, and the two ends of the load-bearing lower beam 7 are provided with tool suspension points 3, which are used to hang insulating tools. The bolts of the suspension points can be unscrewed to facilitate the connection of various insulating tools . Two reinforcing inclined beams 8 are arranged in the frame of the trapezoidal load-bearing beam. The load-bearing lower beam 7 is placed horizontally on the upper layer of the steel pipe pole cross-arm head, and equidistant adjustable long holes 5 are provided on both sides, which are used to adjust the installation position of the fastening bolts and adapt to the width of the steel pipe pole cross-arm head. A fastening lower beam 4 is parallel to the load-bearing lower beam 7, placed horizontally on the lower layer of the steel pipe rod cross-arm head, equidistant adjustable long holes are provided on both sides to adapt to the width of the steel pipe rod cross-arm head, and the fastening lower beam 4 and the load-bearing lower beam 7 are fixed as a whole through the adjustable long hole through the fastening bolt 6 .

Trapezoidal load-bearing beam: The trapezoidal load-bearing beam is the most stressed component in this set of tools, and is used to bear all the vertical loads from the wires. The trapezoidal load-bearing beam consists of a load-bearing upper beam 2 and a load-bearing lower beam 7 , 2 inclined beams 1 and two reinforced inclined beams 8 are formed.

The load-bearing upper beam 2 is placed horizontally on the upper layer of the load-bearing lower beam 7 , and is reasonably connected with the load-bearing lower beam 7 by using the cable-stayed beam 1 and the reinforced inclined beam 8 . The load-bearing lower beam 7 is horizontally placed on the upper layer of the steel pipe pole cross-arm head, and equidistant adjustable long holes are provided on both sides, which are used to adjust the installation position of the fastening bolts and adapt to the width of the steel pipe pole cross-arm head. Tool suspension points 3 are provided at both ends thereof for hanging insulating tools, and the bolts of the suspension points can be unscrewed to facilitate connection of various insulating tools. Fasten the lower crossbeam 4: place it horizontally on the lower layer of the cross-arm head of the steel pipe pole, and equidistant adjustable long holes are provided on both sides to adapt to the width of the cross-arm head of the steel pipe pole. Utilize the fastening bolt 6 to connect the upper and lower beams, so that the utility model is firmly seated on the head of the steel pipe bar cross-arm. Adjustable long holes are designed at appropriate positions on both sides of the load-bearing lower beam and the fastening lower beam, so that the width of the clamp can be adjusted, and vertically penetrate the fastening bolts to connect the upper and lower beams. Fastening bolts: use high-strength manganese steel materials Developed to connect the load-bearing lower beam and the fastening lower beam, and vertically penetrate the adjustable long holes of the load-bearing lower beam and the fastening lower beam, so that the set of clamps can be kept in balance and used to bear the unevenness generated during operation. Balanced pull. Tool hanging point: used for hanging insulated tools, the bolts are made of high-strength manganese steel, which can be unscrewed to connect various insulated tools.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. one kind supplies the special bearing tool of power transmission line steel pipe rod replacing insulator under electrified, it is characterized in that, this instrument comprises trapezoidal load crossbeam, this trapezoidal load crossbeam comprises parallel load entablature and load sill, and connect the oblique pull beam of load entablature and load sill, load sill lies in a horizontal plane in steel pipe pole cross-arm head upper strata, both sides are provided with equidistant adjustable elongated hole, for adjusting the position of installing needed for fastening bolt and the width adapting to steel pipe pole cross-arm head, it is parallel with load sill that one fastening sill is set, lie in a horizontal plane in steel pipe pole cross-arm head lower floor, both sides are provided with equidistant adjustable elongated hole to adapt to the width of steel pipe pole cross-arm head simultaneously, be fixed as one through adjustable elongated hole by fastening bolt between fastening sill and load sill.

2. as claimed in claim 1 for the special bearing tool of power transmission line steel pipe rod replacing insulator under electrified, it is characterized in that, the two ends of load sill are provided with instrument hitch point, for hanging insulating tool, can turn on all kinds of insulating tool of convenient connection by hitch point bolt.

3. as claimed in claim 1 for the special bearing tool of power transmission line steel pipe rod replacing insulator under electrified, it is characterized in that, in the framework of trapezoidal load crossbeam, arrange two reinforce cant beams.