CN210806579U - A portable tension-resistant single-string insulator entry and exit device - Google Patents

Abstract

The utility model belongs to the technical field of electric power maintenance auxiliary equipment, and relates to a portable tension-resistant single-string insulator in-out device. The device includes a pass-through device, a front suspension device and a rear suspension device. The pass-through device is a ladder-like structure processed from hard materials. The front suspension device includes a hook and a connecting plate. One end of the connecting plate is movably connected to the front end of the passing device. , the other end is connected with the straight section of the hook, the rear suspension device is composed of a soft ladder, and one end is movably connected with the rear end of the passing device. The device can reduce the maintenance work time of entering and exiting the tension-resistant single-string insulator, improve work efficiency, reduce the number of operators during work, reduce labor intensity, and has good safety and economic benefits.

Description

A portable tension-resistant single-string insulator entry and exit device

technical field

The utility model belongs to the technical field of electric power maintenance auxiliary equipment, and relates to a portable tension-resistant single-string insulator in-out device.

Background technique

The operation, maintenance and maintenance of transmission lines are the main tasks of each power supply company. With the increasingly tense power supply and demand contradiction, improving the safety and efficiency of power outage maintenance work has become the top priority of related work.

Maintenance of single-string insulators in and out of tension is one of the tasks of the power grid system; at present, for single-string insulators under tension, when the line is powered off, there are two ways for maintenance personnel to enter and exit the wires: (1) Climb in and out along the insulators; (2) Enter and exit the wire through the soft ladder.

Both of the above methods have many drawbacks.

(1) Since the composite insulator shed is made of silicone rubber, it is prone to damage; in order to prevent the occurrence of transmission line accidents, during the maintenance and installation process, damage to the shed, sheath and end seal of the composite insulator should be avoided, and work is strictly prohibited. Personnel stepping on the composite insulator can avoid the damage of the silicone rubber shed or the separation of the mandrel caused by stepping on it, which will bring hidden dangers to the safe operation of the line; therefore, for the composite insulator, the staff is not allowed to enter and exit along the composite insulator. (2) The way of entering and exiting the wire through the soft ladder, when climbing the porcelain insulator, the staff is easy to tip over to both sides, and the safety is low. And the defects such as the need for a large number of personnel to cooperate, cause great inconvenience to the maintenance work of the single-string insulator, and in addition, this method will also force the power outage time to be prolonged.

Utility model content

The purpose of the utility model is to provide a portable tension-resistant single-string insulator entry and exit device, which is convenient for entering and exiting the tension-resistant single-string insulator, shortens the working time, improves the working efficiency, and prevents damage to the composite insulator.

The technical solutions of the present invention to solve the above technical problems are as follows.

A portable tension-resistant single-string insulator entry and exit device includes a passing device, a front suspension device and a rear suspension device; the passing device is a ladder-like structure processed from hard materials; the front suspension device includes a hook and a connecting plate, and the connecting plate is One end is movably connected to the front end of the passing device, and the other end is connected to the straight section of the hook; the rear suspension device is composed of a soft ladder, and one end is movably connected to the rear end of the passing device. In the above technical solution, by connecting the suspension devices at both ends of the passing device respectively, so that they are respectively hung on the working points of the hardware at both ends of the insulator during operation, the installation process is simple and convenient; at the same time, the staff can pass the device on the rigid ladder structure On-the-go maintenance, high work efficiency, high safety, and can avoid damage to composite insulators.

Further, the passing device includes two parallel insulating tubes, and a fixing device connecting the two insulating tubes; the fixing device includes a T-shaped sleeve and a connecting rod, and the number of the T-shaped sleeves is two, and they are respectively sheathed and pressed. It is connected to the pipe walls of the two insulating pipes, and the two ends of the connecting rod are respectively fixedly connected with the two T-shaped sleeves. The use of the T-shaped sleeve makes the installation process more convenient, and at the same time, the connection of the insulating pipe is more simple, convenient, firm and reliable.

Further, the passing device also includes a sleeve and a sleeve rod, both of which are made of insulating materials; the inside of the sleeve is provided with a threaded hole, and one end of the sleeve is fixedly connected to one end of the insulating pipe, and the outer wall of the sleeve rod is provided with a sleeve to connect with the sleeve. The thread is matched with the threaded hole, and one end thereof is rotatably connected with the other end of the insulating pipe; the number of passing devices is at least 2, and the adjacent passing devices are threadedly connected through the sleeve and the sleeve rod. Through the threaded connection of the sleeve and the sleeve rod, the number of passing devices can be increased according to requirements and tightly connected, and the use process is more convenient.

Further, the shape of the connecting plate is a triangular structure; the stability of the front suspension device is higher.

Further, the number of fixing devices is at least 2; so that the strength of the passing device is higher.

Further, the insulating tube is made of epoxy resin, which makes the insulating tube lighter in weight, lower in cost, and easier to obtain materials. At the same time, the strength is similar to that of the metal tube, which can meet the requirements of use.

The beneficial effects of the portable tension-resistant single-string insulator entry and exit device of the utility model are:

(1) Effectively reduce the maintenance work time of the insulators in and out of the tension-resistant single-string insulator, thereby improving the work efficiency; at the same time, it can realize early power transmission and shorten the time of line power outage;

(2) The whole device is lighter in weight, more convenient to carry and assemble, and the required staff is also greatly reduced, which effectively reduces the labor intensity; at the same time, the production cost is lower, and it has certain economic benefits;

(3) It is made of insulating material, which can effectively prevent the operator from being affected by the induced electricity of the adjacent live line when working on the double-circuit tower, reducing the operation risk and making the use safer;

(4) Effectively protect the composite insulator from damage during operation, thereby prolonging the service life of the insulator and making the line operation safer.

Description of drawings

Fig. 1 is the structural representation of the portable tension-resistant single-string insulator entry and exit device of the present utility model;

Fig. 2 is a use state diagram of the portable tension-resistant single-string insulator entry and exit device of the present invention.

The codes in the accompanying drawings are respectively: passing device 1, insulating tube 1-1, sleeve 1-2, sleeve rod 1-3, front suspension device 2, hook 2-1, connecting plate 2-2, rear suspension device 3 , Fixing device 4, T-shaped sleeve 4-1, connecting rod 4-2, tensile single string insulator 5.

Detailed ways

As shown in FIG. 1 , a portable tension-resistant single-string insulator entry and exit device includes a passing device 1 , a front suspension device 2 and a rear suspension device 3 .

The passing device 1 is a ladder-like structure made of hard materials; the passing device 1 includes two insulating tubes 1-1 parallel to each other, and a fixing device 4 connecting the two insulating tubes 1-1; the insulating tube 1-1 Made of epoxy resin; the fixing device 4 includes a T-shaped sleeve 4-1 and a connecting rod 4-2, the number of T-shaped sleeves 4-1 is two, and they are respectively sleeved and crimped on two insulating tubes On the pipe wall of 1-1, the two ends of the connecting rod 4-2 are respectively fixedly connected with the two T-shaped sleeves 4-1, and the number of the fixing devices 4 is at least two.

The device 1 occupies about 80% of the weight of the device, so the selection of materials determines the overall weight of the device; in order to highlight the portability of the device, the material weight and reliability can be analyzed with emphasis; When one side of the circuit and the tower erection line are powered off, the other side runs with electricity. In order to prevent the induced electricity from hurting people during operation, the material needs to use insulating materials. By comparison, the strength of the epoxy resin insulating pipe is close to that of the metal pipe, and the weight is lighter and the material is easier to obtain. The most important thing is that the epoxy resin is an insulating material. Therefore, the use of epoxy resin on the main material of the passing device 1 is a Very appropriate. More specifically, the diameter of the epoxy resin insulating pipe is 35mm, and the length is 6 pipes with a length of 1 meter. High enough and light enough.

Passing device 1 is the main working surface of the entire device, which determines the stability of the entire device, so it is necessary to consider firmness, safety and convenience; at the same time, because the double-circuit and tower erection line is powered off on one side, the other side is electrified In order to prevent inductive electricity from hurting people during operation, the material needs to be selected as an insulating material. By using epoxy resin to process the insulating tube 1-1 and fixing it in combination with the T-shaped sleeve 4-1, the passing device 1 can meet the bearing capacity requirements, with high reliability, low cost and good insulation performance; The sleeve 4-1 also has insulating properties and is more convenient to install.

The passing device 1 also includes a bushing 1-2 and a bushing rod 1-3, both of which are made of insulating materials; the bushing 1-2 is internally provided with a threaded hole, and one end of the bushing 1-2 is fixedly connected to one end of the insulating tube 1-1 , the outer wall of the sleeve rod 1-3 is provided with a thread that matches the threaded hole of the sleeve 1-2, and one end thereof is rotatably connected with the other end of the insulating pipe 1-1, so that it can be freely in the insulating pipe 1-1. Rotation; the number of passing devices 1 is at least 2, and between adjacent passing devices 1, the sleeve 1-2 and the sleeve rod 1-3 are threadedly connected.

Since the access device needs to be used on 110kV and 220kV lines, and the lengths required for 110kV and 220kV are different, in order to highlight the advantages of its wide application range, the pass device 1 is designed as a multi-segment way of connecting sections, through assembly and splicing To deal with different maintenance line conditions, make it more widely used, simpler to operate, and more convenient to carry; at the same time, the connecting device of the adjacent passing device 1 should also have sufficient reliability; the way of screw connection is adopted to make the passing device 1 more reliable. The connection and disassembly are very convenient; in addition, the pre-tightening force can be increased to prevent loosening, thereby avoiding the phase change of the material composition at the connection.

The front suspension device 2 includes a hook 2-1 and a connecting plate 2-2. One end of the connecting plate 2-2 is movably connected to the front end of the passing device 1, and the other end is connected to the straight section of the hook 2-1; The shape is a triangular structure.

The rear suspension device 3 is composed of a soft ladder, and one end thereof is movably connected with the rear end of the passing device 1 . The rear suspension device 3 adopts a soft ladder, which can ensure its light weight, generally no more than 5kg, and also has the advantages of easy access to materials, high strength, good wear resistance, corrosion resistance, and good insulation.

As shown in Figure 2, the main structure of the portable tension-resistant single-string insulator entry and exit device of the present invention is an insulating flat ladder, and suspension devices are connected at both ends of the ladder, so that the two ends of the ladder are hung on the hardware at both ends of the insulator. At the working point, a space support device similar to a bridge is formed; specifically, when in use, the front suspension device 2 is connected to the hardware part of the tensile single-string insulator 5 through the hook 2-1, and the rear suspension device 3 is connected to the solid tower member. On, the staff stand on the passing device 1 to perform related operations; in addition, since the front suspension device 2 and the rear suspension device 3 are all active connections with the passing device 1, both suspension devices can be along the passing device 1. Rotate so that the passing device 1 can be kept horizontal.

The suspension type is adopted, so that it can be installed on the double-connected composite insulator series board, and the operator can pass through, thereby further ensuring that the composite insulator is not damaged during the movement of the staff; because the human body is in a standing posture, the center of gravity is relatively stable, and the left and right are not tilted. The balance is good; the staff can hold the escalator legs with both hands, which has a firm support point, and at the same time, the human body and the bracket can form a triangle, and the stability is higher.

Through experimental comparison, it can be seen that the average time of using the soft ladder method to enter and exit the insulator on 110kV and 220kV transmission lines is more than 30 minutes, and the required personnel is 4 to 5 people; and the device of the utility model can realize the entry and exit resistance on 110kV and 220kV lines. The time for a single string of insulators is less than 8 minutes, and the number of staff is reduced to 2 to 3 people, which greatly shortens the working time and improves the working efficiency. In addition, the overall weight of the device is about 10 kilograms, which is very convenient to install and carry.

Claims (6)

1. A portable tension single-string insulator in-and-out device is characterized by comprising a pass device (1), a front suspension device (2) and a rear suspension device (3);

the passing device (1) is of a ladder-shaped structure processed by hard materials;

the front suspension device (2) comprises a hook (2-1) and a connecting plate (2-2), one end of the connecting plate (2-2) is movably connected to the front end of the passing device (1), and the other end of the connecting plate is connected with the straight section of the hook (2-1);

the rear suspension device (3) consists of a rope ladder, and one end of the rear suspension device is movably connected with the rear end of the passing device (1).

2. The portable tension-resistant single-string insulator access device according to claim 1, wherein the pass-through device (1) comprises two insulating tubes (1-1) parallel to each other, and a fixing device (4) connecting the two insulating tubes (1-1);

the fixing device (4) comprises two T-shaped sleeves (4-1) and two connecting rods (4-2), the two T-shaped sleeves (4-1) are respectively sleeved and pressed on the pipe walls of the two insulating pipes (1-1), and two ends of each connecting rod (4-2) are respectively fixedly connected with the two T-shaped sleeves (4-1).

3. The portable tension-resistant single-string insulator access device according to claim 2, wherein the pass-through device (1) further comprises a sleeve (1-2) and a loop bar (1-3) both made of insulating materials;

a threaded hole is formed in the sleeve (1-2), one end of the sleeve is fixedly connected with one end of the insulating tube (1-1), threads matched with the threaded hole of the sleeve (1-2) are arranged on the outer wall of the loop bar (1-3), and one end of the loop bar is rotatably connected with the other end of the insulating tube (1-1);

the number of the passage devices (1) is at least 2, and the adjacent passage devices (1) are in threaded connection with the sleeve rod (1-3) through the sleeve (1-2).

4. The portable tension string insulator access device according to any one of claims 1 to 3, wherein the shape of the connection plate (2-2) is a triangular structure.

5. The portable tension-resistant single-string insulator access device according to claim 2 or 3, wherein the number of the fixing devices (4) is at least 2.

6. The portable tension-resistant single-string insulator access device according to claim 2 or 3, wherein the insulating tube (1-1) is processed by epoxy resin.

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