CN110752548A - Device and method of use for replacing wire spacers of ±800kV transmission lines - Google Patents

Abstract

The invention discloses a device and a using method for replacing wire spacers of ±800kV transmission lines. The device comprises an upper horizontal axis, a middle vertical axis, a lower horizontal axis, a grab hook, an elastic member and a connecting rod structure; the upper horizontal axis and the The lower horizontal shaft is connected by the middle vertical shaft, the upper horizontal shaft, the middle vertical shaft and the lower horizontal shaft are all lead screws; the two ends of the upper horizontal shaft and the lower horizontal shaft are connected by a connecting rod structure, and the connecting rod The structure includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with the second connecting rod, the other end is hinged with the end of the upper horizontal shaft, one end of the second connecting rod is hinged with the first connecting rod, and the other end is hinged with the first connecting rod. One end is hinged with the end of the lower horizontal shaft; the two ends of the upper horizontal shaft, the two ends of the lower horizontal shaft, and the hinged places of the first link and the second link are provided with hooks and elastic pieces. To solve the problem of time-consuming and labor-intensive maintenance of the spacer rod by two operators when the fault of the wire spacer bar of the ±800kV transmission line needs to be carried out.

Description

Device and method of use for replacing wire spacers of ±800kV transmission lines

technical field

The invention relates to the technical field of transmission line maintenance, in particular to a device and a use method for replacing wire spacers of ±800kV transmission lines.

Background technique

UHV transmission lines have the characteristics of large transmission capacity, large line span, and large tonnage of insulators. For ±800kV transmission lines, six split conductors are generally used, and spacers are generally used to fix and control the spacing between the split conductors to prevent the sub-conductors from whipping each other and suppress breeze vibration and secondary spacing vibration.

The spacer bar should generally have sufficient grip strength, and it is not allowed to loosen during long-term operation. The overall strength must withstand the centripetal force of the split wire when the line is short-circuited and the fatigue under long-term vibration. The spacer bar is in the coupling field of the electric field and the force field for a long time, and is prone to slip or damage. The slip or damage of the spacer bar will have a certain impact on the safe operation of the line.

At present, there is no special tool for replacing the wire spacer bar of ±800kV transmission line in the power maintenance industry. If it is necessary to replace and repair the wire spacer bar of ±800kV transmission line, two operators need to cooperate with each other and spend about 40 minutes to carry out the replacement work. The entire maintenance process is time-consuming and labor-intensive, and the physical strength of the operators is huge, which seriously reduces the safety and operation efficiency of power maintenance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device for replacing the wire spacer bars of the ±800kV transmission line, so as to solve the problem of the failure of the wire spacer bars of the ±800kV transmission line and need to carry out power maintenance work, it takes two operators to perform the time-consuming and laborious maintenance work of the spacer bars. , the laborious problem.

In addition, the present invention also provides a method of using the above device.

The present invention is achieved through the following technical solutions:

The device and method of use for replacing the wire spacers of ±800kV transmission lines, including the upper horizontal axis, the middle vertical axis, the lower horizontal axis, the grab hook, the elastic piece and the connecting rod structure;

The upper horizontal shaft and the lower horizontal shaft are arranged in parallel, the upper horizontal shaft and the lower horizontal shaft are connected by a middle vertical shaft, and the upper horizontal shaft, the middle vertical shaft and the lower horizontal shaft are all lead screws;

The two ends of the upper horizontal shaft and the lower horizontal shaft are connected by a connecting rod structure, and the connecting rod structure includes a first connecting rod and a second connecting rod, and one end of the first connecting rod is connected with the second connecting rod. The rod is hinged, the other end is hinged with the end of the upper horizontal shaft, one end of the second connecting rod is hinged with the first connecting rod, and the other end is hinged with the end of the lower horizontal shaft;

The two ends of the upper horizontal shaft, the two ends of the lower horizontal shaft, and the hinge of the first connecting rod and the second connecting rod are all provided with grappling hooks and elastic pieces; The split wires are matched, and the ends of the 6 elastic pieces are connected with the vertical axis.

In addition to the six-split wire, the special tool of the present invention can also be used for similar hexagonal linear objects or devices that need to be fixed in the regular hexagonal shape for maintenance or installation.

The lead screw of the present invention is in the prior art, and the length adjustment of the upper horizontal axis, the middle vertical axis and the lower horizontal axis can be realized by adjusting the lead screw. The angle of the hexagon formed by the upper horizontal axis, the connecting rod structure and the lower horizontal axis can be adjusted.

The upper horizontal axis, the connecting rod structure, the lower horizontal axis, and the six elastic members of the present invention together form a six-axis spring balance system, which is responsible for maintaining the balance of the internal system of the tool, so that the hexagon formed by the wire is always a regular hexagon. Adjust the lengths of the upper horizontal axis, the middle vertical axis and the lower horizontal axis, and use the geometric principle of the regular hexagon to realize the automatic alignment of the two hooks in the middle. The six grappling hooks grab six split wires respectively, so the six grappling hooks are also evenly distributed on the circle. The upper horizontal axis, the middle vertical axis and the lower horizontal axis convert the rotary motion to the mechanical principle of linear motion, and convert the torque into The repeated axial force transfers the load in the vertical direction of the wire through the lead screw to complete the maintenance work of the spacer bar.

The invention mainly solves the time-consuming and labor-intensive situation that two operators are required to carry out the time-consuming and laborious maintenance of the spacer bar when the fault of the wire spacer bar of the ±800kV transmission line is required. At the same time, it also has the following advantages:

1. The present invention uses the mechanical principle of ingeniously moving the screw to convert the rotary motion into linear motion, and converts the torque into the repeated axial force. At the same time, it has the characteristics of reversibility and high efficiency, and can effectively control the distance between the wires. .

2. The present invention adopts the six-axis balance system, cleverly uses the balance principle in mechanics, and realizes the unbalanced situation of the tool when tightening or stretching Guo Zhongcheng through the six-axis spring system, so as to ensure that the six grappling hooks are always in the same position. The center is the center of the circle, the spring axis is the center of the radius, and the six grapple hooks are evenly distributed, and the central angle of the arc between each grapple hook is 60°, which further ensures the balance of the present invention.

Further, the lead screw is an electric motor lead screw.

The moving motor lead screw is in the prior art.

Further, the electric motor lead screw includes a lead lever body and a lead screw adjuster arranged on the lead lever body, the lead screw adjuster is used to realize the length adjustment of the upper horizontal axis, the middle vertical axis and the lower horizontal axis, the middle Two ends of the vertical shaft are respectively connected with the screw adjusters of the upper horizontal shaft and the lower horizontal shaft, and the ends of the six elastic parts are connected with the screw adjusters.

Further, a lithium battery and an electric motor are arranged in the lead screw regulator, and a control circuit is also arranged in the lead screw regulator. The output end of the lithium battery is electrically connected to the control circuit through an electrical filter, and the control circuit has the function of Control of electric motors.

The electric motor can rotate forward and reverse, and the length of the lead screw can be adjusted by the rotation of the electric motor, and the lithium battery provides power for the electric motor.

By adopting measures such as electrical filters to ensure that the lithium battery and the motor can operate normally in various environments, the reliability of the device is further improved.

Further, a display screen and operation buttons are arranged on the outer wall of the lead screw adjuster.

The display screen is used to display the relevant data of the tool, including data related to the motor of the tool, the temperature and humidity of the environment, the real-time length and time of the lead screw, etc. The operation button realizes the control of the forward and reverse rotation of the electric motor, and start-stop.

By setting up a digital electronic display screen, this tool conducts real-time monitoring of the tool battery power, internal circuit, environmental conditions, shaft length, etc., and the user controls the tools in real time through the digital display screen, so that the tools are always in the best condition. state to ensure the performance of the tools.

Further, the connection manner of the grab hook with the two ends of the upper horizontal shaft, the two ends of the lower horizontal shaft, and the hinged joints of the first link and the second link are all hinged.

Further, the outer wall of the grapple is provided with an insulating layer.

Further, the insulating layer is made of epoxy resin.

The epoxy resin is in the prior art and can be insulated.

Further, the elastic member is a spring.

A method for using a device for replacing a wire spacer bar of a ±800kV transmission line, comprising the following steps:

Step 1), check the device before use;

Step 2), adjust the lead screw to adjust the length of the upper horizontal axis, the middle vertical axis and the lower horizontal axis to the appropriate position;

Step 3), install the device to a suitable position near the original spacer bar of the six-split wire, and hang the six hooks on the six split wires respectively. If the lengths of the upper horizontal axis, the middle vertical axis and the lower horizontal axis are not suitable, Repeat step 2);

Step 4), after the installation is completed, pre-tighten the lead screw, check after pre-tightening, and continue after confirming that it is correct;

Step 5), continue to tighten the lead screw to the appropriate position, and install the new spacer rod at the required position;

Step 6), install the spacer rod in place by adjusting the lead screw;

Step 7), after confirming that the spacer rod is installed in place and the force is normal, loosen the lead screw to a suitable position, and take out the device.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The present invention solves the time-consuming and labor-intensive situation that 2 operators are required to perform the time-consuming and laborious maintenance of the spacer bar when the wire spacer bar of the ±800kV transmission line fails and needs to be carried out for power maintenance work.

2. The present invention uses the mechanical principle of ingeniously moving the screw to convert rotary motion into linear motion, and converts torque into repeated axial force. At the same time, it has the characteristics of reversibility and high efficiency, and can effectively control the spacing between wires. .

3. The present invention adopts the six-axis balance system, cleverly uses the balance principle in mechanics, and realizes the unbalanced situation of the tool when tightening or stretching Guo Zhongcheng through the six-axis spring system, so as to ensure that the six grappling hooks are always in the same position. The center is the center of the circle, the spring axis is the center of the radius, and the six grapple hooks are evenly distributed, and the central angle of the arc between each grapple hook is 60°, which further ensures the balance of the present invention.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present invention. In the attached image:

Fig. 1 is the structural representation of the special tool of the present invention;

Figure 2 is a diagram of the internal structure of the motor;

Fig. 3 is the forward and reverse control circuit diagram of the DC motor;

FIG. 4 is a schematic diagram of a bandpass filter diagram;

Figure 5 is a block diagram of the sensor and display work.

The marks in the attached drawings and the corresponding parts names:

1-Upper horizontal axis, 2-Middle vertical axis, 3-Lower horizontal axis, 4-Grab hook, 5-Elastic piece, 6-First link, 7-Second link, 8-Screw adjuster, 9 -Display.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present invention.

Example:

As shown in Figure 1, the device for replacing the wire spacers of the ±800kV transmission line includes an upper horizontal axis 1, a middle vertical axis 2, a lower horizontal axis 3, a grab hook 4, an elastic member 5 and a connecting rod structure;

The upper horizontal axis 1 and the lower horizontal axis 3 are arranged in parallel, the upper horizontal axis 1 and the lower horizontal axis 3 are connected by the middle vertical axis 2, the upper horizontal axis 1, the middle vertical axis 2 and the lower horizontal axis 3 are all lead screws;

The two ends of the upper horizontal shaft 1 and the lower horizontal shaft 3 are connected by a connecting rod structure. The connecting rod structure includes a first connecting rod 6 and a second connecting rod 7. The first connecting rod 6 One end is hinged with the second connecting rod 7, the other end is hinged with the end of the upper horizontal shaft 1, one end of the second connecting rod 7 is hinged with the first connecting rod 6, and the other end is hinged with the end of the lower horizontal shaft 3;

The two ends of the upper horizontal shaft 1, the two ends of the lower horizontal shaft 3, and the hinges of the first link 6 and the second link 7 are hinged with a grab hook 4 and an elastic member 5; 6 The gripping hooks 4 are respectively matched with six split wires, and the ends of the six elastic members 5 are connected to the vertical shaft 2, and the elastic members 5 are springs;

Specifically, the lead screw is an electric motor lead screw, and the electric motor lead screw includes a lead screw body and a lead screw adjuster 8 arranged on the lead screw body, and the lead screw adjuster 8 is used to realize the upper horizontal axis 1. The length adjustment of the middle vertical shaft 2 and the lower horizontal shaft 3, the two ends of the middle vertical shaft 2 are respectively connected with the screw adjusters 8 of the upper horizontal shaft 1 and the lower horizontal shaft 3, and the ends of the 6 elastic members 5 are respectively connected. The lead screw adjuster 8 is connected with the lead screw regulator 8. The lead screw adjuster 8 is provided with a lithium battery and an electric motor. The lead screw regulator 8 is also provided with a control circuit. The output end of the lithium battery passes through an electrical filter and a control circuit. Electrical connection, the control circuit has control of the electric motor, the outer wall of the screw adjuster 8 is provided with a display screen 9 and an operation button; the outer wall of the grapple 4 is provided with an insulating layer; the insulating layer adopts Made of epoxy resin.

In this embodiment, the lithium battery is used to supply power to the motor, so that the rotation of the motor provides rotary motion (including forward rotation and reverse rotation) to the lead screw. The motor can operate normally in various environments, further improving the reliability of the device.

This embodiment adopts 775 motor, high torque, 24V safety voltage, no-load current is about 0.4A, stall current is about 4A, no-load power is about 9.6W, motor steering supports forward and reverse rotation, motor diameter is 50mm, step height 5mm, the diameter of the step is 18mm, the length of the motor shaft is 20mm, and the weight of the motor is about 200g. The structure is shown in Figure 2; the forward and reverse control circuit of the DC motor is shown in Figure 3, and the band-pass filter diagram is shown in Figure 4. This embodiment is also equipped with a length sensor, a temperature sensor, a humidity sensor and a power sensor. The power sensor is used to sense the power of the lithium battery in real time, the length sensor is used to sense the length of the lead screw, the temperature sensor and the humidity sensor are respectively used to sense the temperature and humidity of the working environment, and the working block diagram of the sensor and the display screen is shown in the figure. As shown in 5, the display screen adopts a liquid crystal display screen, and the liquid crystal display screen is the existing technology.

The working process of this embodiment is as follows:

Step 1. Before use, check whether the power of the tool, the connection of various parts, and the surface condition are in good condition, and confirm that they are correct;

Step 2, adjust the length of the lead screw to an appropriate position by starting the electric motors respectively;

Step 3: Install the tool to a suitable position near the original spacer bar of the six-split wire, generally at a distance of about 20cm, and hang the six grappling hooks 4 on the six split wires respectively. The remaining grappling hooks 4 are downward, if the length is not suitable, repeat step 2;

Step 4. After the installation is completed, pre-tighten the electric motor lead screw, check after pre-tightening, and continue after confirming that it is correct;

Step 5, continue to tighten the lead screw of the electric motor to the appropriate position, and install the new spacer bar at the required position;

Step 6, install the spacer bar in place by adjusting the electric motor lead screw;

Step 7: After confirming that the spacer bar is installed in place and the force is normal, loosen the lead screw of the electric motor to a suitable position, and take out the tool.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A device for replacing the wire spacers of ±800kV transmission lines, characterized in that it includes an upper horizontal axis (1), a middle vertical axis (2), a lower horizontal axis (3), a grapple (4), an elastic member ( 5) and connecting rod structure; The upper horizontal axis (1) and the lower horizontal axis (3) are arranged in parallel, the upper horizontal axis (1) and the lower horizontal axis (3) are connected by a middle vertical axis (2), and the upper horizontal axis ( 1) The middle vertical axis (2) and the lower horizontal axis (3) are all lead screws; Both ends of the upper horizontal shaft (1) and the lower horizontal shaft (3) are connected by a connecting rod structure, and the connecting rod structure includes a first connecting rod (6) and a second connecting rod (7) One end of the first connecting rod (6) is hinged with the second connecting rod (7), the other end is hinged with the end of the upper horizontal shaft (1), and one end of the second connecting rod (7) is hinged with the first connecting rod (6) hinged, and the other end is hinged with the end of the lower horizontal shaft (3); Grab hooks are provided on the two ends of the upper horizontal shaft (1), the two ends of the lower horizontal shaft (3), and the hinged joints of the first connecting rod (6) and the second connecting rod (7) (4) and an elastic piece (5); the six gripping hooks (4) are matched with the six split wires respectively, and the ends of the six elastic pieces (5) are connected with the vertical shaft (2). 2 . The device for replacing the spacer bars of ±800kV transmission line wires according to claim 1 , wherein the lead screw is an electric motor lead screw. 3 . 3. The device for replacing the wire spacers of ±800kV transmission lines according to claim 2, wherein the electric motor lead screw comprises a lead lever body and a lead screw adjuster (8 ), the screw adjuster (8) is used to realize the length adjustment of the upper horizontal shaft (1), the middle vertical shaft (2) and the lower horizontal shaft (3), and the two ends of the middle vertical shaft (2) are respectively It is connected with the screw adjusters (8) of the upper horizontal shaft (1) and the lower horizontal shaft (3), and the ends of the six elastic pieces (5) are connected with the screw adjusters (8). 4. The device for replacing the wire spacers of ±800kV transmission lines according to claim 3, wherein a lithium battery and an electric motor are arranged in the screw regulator (8), and the screw regulator (8) is provided with a lithium battery and an electric motor. 8) There is also a control circuit inside, and the output end of the lithium battery is electrically connected to the control circuit through an electrical filter, and the control circuit has the control of the electric motor. 5 . The device for replacing the wire spacers of ±800kV transmission lines according to claim 3 , wherein a display screen ( 9 ) and operation buttons are arranged on the outer wall of the lead screw adjuster ( 8 ). 6 . 6 . The device for replacing the wire spacers of ±800kV transmission lines according to claim 1 , wherein the grab hook ( 4 ) is connected to two ends of the upper horizontal shaft ( 1 ) and the lower horizontal shaft ( 6 . 7 . The two ends of 3) and the hinged connection of the first connecting rod (6) and the second connecting rod (7) are all hinged. 7 . The device for replacing the spacer rods of ±800kV transmission line wires according to claim 1 , wherein the outer wall of the grapple ( 4 ) is provided with an insulating layer. 8 . 8 . The device for replacing the spacer bars of ±800kV transmission line wires according to claim 7 , wherein the insulating layer is made of epoxy resin. 9 . 9 . The device for replacing the spacer bars of ±800kV transmission line wires according to any one of claims 1 to 8 , wherein the elastic member ( 5 ) is a spring. 10 . 10. A method of using the device for replacing the wire spacer bar of ±800kV transmission line as described in any one of claims 1-9, characterized in that, comprising the following steps: Step 1), check the device before use; Step 2), adjust the lead screw to adjust the lengths of the upper horizontal shaft (1), the middle vertical shaft (2) and the lower horizontal shaft (3) to appropriate positions; Step 3), install the device to a suitable position near the original spacer bar of the six-split wire, and hang the six hooks (4) on the six split wires respectively, as shown in the horizontal axis (1), the vertical axis (2) and the If the length of the lower horizontal axis (3) is not suitable, repeat step 2); Step 4), pre-tighten the lead screw after the installation is completed, check after pre-tightening, and continue after confirming that it is correct; Step 5), continue to tighten the lead screw to the appropriate position, and install the new spacer at the required position; Step 6), install the spacer rod in place by adjusting the lead screw; Step 7), after confirming that the spacer rod is installed in place and the force is normal, loosen the lead screw to a suitable position, and take out the device.

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