Installation and fixing device and method for overhead wires

Abstract

The present invention relates to the technical field of wire fixing, and in particular to an installation and fixing device and method for overhead wires. A sleeve is rotatably connected to the inner side of the top of a steel pipe pole, and an upper cross arm and a lower cross arm are fixedly connected to the outer side of the sleeve. The upper cross arm and the lower cross arm are in the same plane. In an initial state, the plane where the upper cross arm and the lower cross arm are located is perpendicular to the installation direction of the wires. An upper connecting piece is fixedly connected to the upper cross arm, and the upper connecting piece is used to connect and fix the wires at a high position. A lower connecting piece is slidably connected to the lower cross arm, and the lower connecting piece is used to connect and fix the wires at a low position. In the initial state of the present invention, the plane where the upper cross arm and the lower cross arm are located is perpendicular to the installation direction of the wires. The upper cross arm and the lower cross arm form a lever mechanism with the sleeve as the rotation center. The lever arm ratio of the upper and lower lever arms is changed by changing the position of the lower connecting piece on the lower cross arm, so that the sleeve is finally in the initial state, so that the forces on both sides of the steel pipe pole are offset, and the balance of the steel pipe pole is maintained.

Description

Technical Field

[0001] The invention relates to the technical field of electric wire fixing, in particular to an installation and fixing device and method for overhead electric wires. Background Art

[0002] For overhead wires within the factory area, such as Figure 1 As shown, there is a situation where the heights of the steel pipe poles used to support the electric wires are inconsistent, such as when power is supplied from a low place to a high place, or from a high place to a low place. In this case, for the steel pipe pole 1 in the middle position used for "connecting the upper and lower parts", the tension of the electric wire 2 on the side connected to the high place will be smaller than the tension of the electric wire 2 connected to the low place, that is, for the steel pipe pole 1 in the middle position used for "connecting the upper and lower parts", it is in a state of uneven force. When encountering strong winds, this uneven force will be aggravated, causing the steel pipe pole 1 in the middle position to tilt and shake, thereby causing losses in production and other aspects.

[0003] Meanwhile, the existing wires are fixed on the steel pipe poles in a rigid manner. When encountering strong winds, the pulling force of the wires is too large and the wires may be torn off.

[0004] Therefore, in order to solve the above problems, an installation and fixing device and method for overhead wires are proposed. Summary of the invention

[0005] The object of the present invention is to provide an installation and fixing device and method for overhead wires to solve the problem raised in the above background technology that "the steel pipe pole in the middle position, which is used to connect the upper and lower parts, is in a state of uneven force. When encountering strong winds, this uneven force will be aggravated, causing the steel pipe pole in the middle position to tilt and shake, and the pulling force of the wires is too large, causing the wires to be torn off."

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an installation and fixing device for overhead wires, comprising a steel pipe pole, a sleeve is rotatably connected to the inner side of the top end of the steel pipe pole, an upper cross arm and a lower cross arm are fixedly connected to the outer side of the sleeve, the upper cross arm and the lower cross arm are in the same plane, in an initial state, the plane where the upper cross arm and the lower cross arm are located is perpendicular to the erection direction of the wire, an upper connecting piece is fixedly connected to the upper cross arm, the upper connecting piece is used to connect and fix the wire at a high position, and a lower connecting piece is slidably connected to the lower cross arm, the lower connecting piece is used to connect and fix the wire at a low position;

[0007] The upper cross arm and the lower cross arm are coaxial, and form a lever mechanism with the sleeve as the rotation center. The lever arm ratio of the upper and lower lever arms is changed by changing the position of the lower connecting piece on the lower cross arm, and finally the sleeve is in the initial state, so that the forces on both sides of the steel pipe rod are offset and the balance of the steel pipe rod is maintained.

[0008] Under the above arrangement, the invention can effectively make the steel pipe rod in the middle position, which is used for "connecting the upper and lower parts", be in a state of uniform force, and at the same time avoid the situation in which the uneven force is aggravated in strong winds, causing the steel pipe rod in the middle position to tilt and shake;

[0009] In the initial state of the present invention, the planes where the upper cross arm and the lower cross arm are located are perpendicular to the installation direction of the electric wires, the upper cross arm is fixedly connected with an upper connecting piece for connecting and fixing the electric wires at a high position, the lower cross arm is slidably connected with a lower connecting piece for connecting and fixing the electric wires at a low position, the upper cross arm and the lower cross arm are coaxial, and the upper cross arm and the lower cross arm form a lever mechanism with the sleeve as the rotation center;

[0010] The ratio of the upper and lower force arms is changed by changing the position of the lower connecting piece on the lower cross arm. The upper force arm is the distance from the upper connecting piece to the sleeve. The lower force arm is changed and adjusted according to the position of the lower connecting piece on the lower cross arm. Finally, the sleeve is in the initial state, and the forces on both sides of the steel pipe rod are offset, thereby maintaining the balance of the steel pipe rod and making the steel pipe rod in the middle position in a uniform force state.

[0011] As a preferred installation and fixing device for overhead wires of the present invention, the inner side of the sleeve is fixedly connected to a central axis, a slider is embedded in the inner side of the outer edge of the central axis, the upper outer edge of the steel pipe rod is fixedly connected to a ring potentiometer, the slider slides on the ring potentiometer, and the deflection angle of the upper crossarm and the lower crossarm is obtained by the position of the slider on the ring potentiometer.

[0012] Under the above setting, the present invention has a central shaft fixedly connected to the inner side of the sleeve. When the sleeve rotates, the central shaft rotates concentrically, and the slider slides on the annular potentiometer. By obtaining the position of the slider on the annular potentiometer, the deflection angles of the upper cross arm and the lower cross arm are obtained, providing data support for the initialization adjustment of the upper cross arm and the lower cross arm.

[0013] As a preferred installation and fixing device for overhead wires of the present invention, one end of the lower crossarm is fixedly connected to a first motor, the end of the main shaft of the first motor is fixedly connected to a first screw, the other end of the first screw is rotatably connected to the inner side of the lower crossarm, a slide groove is provided at the upper end of the lower crossarm, a first slide seat is slidably connected to the inner side of the slide groove, the top end of the first slide seat is fixedly connected to the bottom end of the lower connecting member, the outer side of the first screw rod is spirally connected to the inner side of the first slide seat, and the position of the lower connecting member on the lower crossarm is changed by the forward or reverse rotation of the first motor.

[0014] Under the above setting, the position of the lower connecting member on the lower cross arm is adjusted in that the first motor rotates, and the rotation of the first motor drives the first screw to rotate. Because the first screw is spirally connected to the first slide seat, when the first screw rotates, the position of the lower connecting member on the lower cross arm can be changed;

[0015] As a preferred installation and fixing device for overhead wires of the present invention, the upper connecting member and the lower connecting member are both arranged to slide downward gradually from the upper direction of the connection to the lower direction of the connection.

[0016] As a preferred installation and fixing device for overhead wires of the present invention, the landslide of the upper connecting piece is in a concave transition, and the landslide of the lower connecting piece is in a convex transition.

[0017] This arrangement can effectively increase the support distance of the wire on the upper connector or the lower connector, increase the support arc surface, and reduce the right angle of the support connection, so that the pulling force of the wire can be evenly distributed on the connection surface, avoiding excessive pulling force on the wire, resulting in loose wires and falling off of the protective cover;

[0018] As a preferred installation and fixing device for overhead wires of the present invention, the upper connecting member and the lower connecting member are both provided with wire grooves for the power supply wires to pass through, and the upper connecting member and the lower connecting member are both provided with positioning holes, and the pressing plates are connected to the positioning holes by bolts to fix the wires.

[0019] In the present invention, the wire is fixed on the upper connecting member or the lower connecting member by connecting the pressing sheet to the positioning hole by bolts to fix the wire.

[0020] As a preferred installation and fixing device for overhead wires of the present invention, a connecting plate is fixedly connected to the outer side of the sleeve, a connecting ring is fixedly connected to the upper side of the steel pipe rod, a support rod is fixedly connected to the outer side of the connecting ring, a U-shaped frame is fixedly connected to the top of the support rod, airbags are fixedly connected to both ends of the inner side of the U-shaped frame, the connecting plate is arranged between the two airbags, and the rotational damping force of the connecting plate and the sleeve can be adjusted by adjusting the expansion degree of the airbags.

[0021] As a preferred installation and fixing device for overhead wires of the present invention, an air pump is fixedly connected to the end of the support rod, and the output end of the air pump is connected to the inner side of the two airbags through the built-in pipeline of the U-shaped frame to realize the inflation of the inside of the airbag, and the airbag is provided with a solenoid valve for exhaust.

[0022] Under the above settings, the upper connecting member and the lower connecting member connected to the electric wires in the present invention are fixed on the sleeve in an active state, that is, the original rigid fixation is changed to a flexible fixation. When encountering strong winds, the solenoid valve is opened to reduce the expansion degree of the airbag, so that the connecting plate is in an active state, the rotational damping force of the sleeve is reduced, and the upper crossarm and the lower crossarm are in an active state. The shaking degree and frequency of the electric wires on both sides of the top of the steel pipe pole are difficult to keep consistent. The upper crossarm and the lower crossarm can have a certain buffer space in strong winds, and the sleeve will repeatedly deflect to the side with greater pulling to compensate, so as to prevent the pulling force of the electric wire from being too large in strong winds and causing the electric wire to be torn off. When there is no wind, the airbag is inflated by an air pump to increase the expansion degree of the airbag, so that the connecting plate is in a limited state, the rotational damping force of the sleeve is increased, and the stability of the upper crossarm and the lower crossarm is increased.

[0023] Preferably, as an installation and fixing device for overhead wires of the present invention, one side of the bottom end of the upper connecting member and the lower connecting member is rotatably connected with a base plate, the base plate at the upper connecting member is fixedly connected to the upper cross arm, and the base plate at the lower connecting member is fixedly connected to the top of the first slide seat, the inner side of the base plate is fixedly connected to a second motor, the end of the main shaft of the second motor is fixedly connected to a second screw, the outer side of the second screw is spirally connected to a second slide seat, the second slide seat is slidably connected to the inner side of the base plate, the top end of the second slide seat is rotatably connected to a connecting rod through a hinge, the other end of the connecting rod is rotatably connected to the inner side of the bottom end of the upper connecting member or the lower connecting member through a hinge, and the angle of the upper connecting member or the lower connecting member is adjusted by the rotation of the respective second motors.

[0024] Under the above settings, the present invention can rotate the second motor to drive the second screw rod to rotate, so that the second slide seat can slide left and right. During the sliding of the second slide seat left and right, the inclination angle of the upper connecting member or the lower connecting member can be changed. When the starting end of the wire connected to the upper connecting member is too high, that is, the height of the upper steel pipe rod is high, the inclination degree of the upper connecting member is increased, and the upper connecting member can be further moved along the direction of the wire, reducing the bending of the wire, reducing the right-angle transition at the support connection, and increasing the stability of the connection;

[0025] When the end of the wire connected to the lower connecting piece is too low, that is, the height of the next steel pipe pole is low, the inclination of the lower connecting piece is increased, so that the lower connecting piece can further follow the direction of the wire, reduce the bending of the wire, reduce the right-angle transition of the supporting connection, and increase the stability of the connection.

[0026] The method for installing and fixing overhead wires comprises the following steps:

[0027] Step 1: Fix the upper connector on the upper cross arm to the upper side of the wire, and fix the lower connector on the lower cross arm to the lower side of the wire, and keep the wire connected and of sufficient length between the upper connector and the lower connector;

[0028] Step 2: The position of the lower connecting member on the lower cross arm is changed by the first motor, the lever arm ratio of the upper and lower lever arms is changed, and the position of the slider on the ring potentiometer is referred to, so that the sleeve is finally in the initial state, the forces on both sides of the steel pipe rod are offset, and the balance of the steel pipe rod is maintained;

[0029] Step 3: When encountering strong winds, open the solenoid valve to reduce the expansion of the airbag, make the connecting plate active, reduce the rotational damping force of the sleeve, make the upper and lower crossarms active, and the shaking degree and frequency of the wires on both sides of the top of the steel pipe pole are difficult to keep consistent. The upper and lower crossarms can have a certain buffer space in strong winds, and the sleeve will repeatedly deflect to the side with greater pulling force to compensate, to prevent the wires from being broken due to excessive pulling force in strong winds.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The invention of the installation and fixing device for overhead wires can effectively make the steel pipe pole in the middle position for "connecting the upper and lower parts" in a state of uniform force, and at the same time avoid the situation that the uneven force is aggravated in strong winds, causing the steel pipe pole in the middle position to tilt and shake. In the initial state of the invention, the planes where the upper cross arm and the lower cross arm are located are perpendicular to the erection direction of the wires, the upper cross arm is fixedly connected with an upper connector for connecting and fixing the wires at a high position, and the lower cross arm is slidably connected with a connector for connecting and fixing the wires at a high position. A lower connector for connecting and fixing the electric wires at a low position, an upper cross arm and a lower cross arm are coaxial, and form a lever mechanism with the sleeve as the rotation center. The lever arm ratio of the upper and lower lever arms is changed by changing the position of the lower connector on the lower cross arm. The upper lever arm is the distance from the upper connector to the sleeve, and the lower lever arm is changed and adjusted according to the position of the lower connector on the lower cross arm, so that the sleeve is finally in the initial state, and the forces on both sides of the steel pipe rod are offset, thereby maintaining the balance of the steel pipe rod and making the steel pipe rod in the middle position in a uniformly stressed state.

[0032] 2. The installation and fixing device for overhead wires of the present invention has a central axis fixedly connected to the inner side of the sleeve. When the sleeve rotates, the central axis rotates concentrically, and the slider slides on the annular potentiometer. By obtaining the position of the slider on the annular potentiometer, the deflection angles of the upper crossarm and the lower crossarm are obtained, providing data support for the initialization adjustment of the upper crossarm and the lower crossarm.

[0033] 3. The installation and fixing device for overhead wires has an upper connecting piece and a lower connecting piece that are both arranged to slide gradually downward from the upper direction of the connection to the lower direction of the connection. The slide of the upper connecting piece is a concave transition, and the slide of the lower connecting piece is a convex transition. This arrangement can effectively increase the support distance of the wire on the upper connecting piece or the lower connecting piece, increase the support arc surface, reduce the right angle of the support connection, so that the pulling force of the wire can be evenly distributed on the connection surface, avoiding excessive pulling force on the wire, resulting in loose wires and falling off of the protective cover.

[0034] 4. The installation and fixing device for overhead wires, the upper connecting piece and the lower connecting piece connected to the wires in the present invention are fixed on the sleeve in an active state, that is, the original rigid fixation is changed to a flexible fixation. When encountering strong winds, the solenoid valve is opened to reduce the expansion degree of the airbag, so that the connecting plate is in an active state, the rotational damping force of the sleeve is reduced, and the upper crossarm and the lower crossarm are in an active state. The shaking degree and frequency of the wires on both sides of the top of the steel pipe pole are difficult to be consistent. The upper crossarm and the lower crossarm can have a certain buffer space in strong winds, and the sleeve will repeatedly deflect to the side with greater pulling to compensate, so as to prevent the pulling force of the wire from being too large in strong winds and causing the wire to be broken. When there is no wind, the airbag is inflated by an air pump to increase the expansion degree of the airbag, so that the connecting plate is in a limited state, the rotational damping force of the sleeve is increased, and the stability of the upper crossarm and the lower crossarm is increased.

[0035] 5. The installation and fixing device for overhead wires can rotate the second motor to drive the second screw rod to rotate, so that the second slide seat can slide left and right. During the sliding of the second slide seat left and right, the inclination angle of the upper connecting member or the lower connecting member can be changed. When the starting end of the wire connected to the upper connecting member is too high, that is, the height of the previous steel pipe rod is relatively high, the inclination of the upper connecting member is increased, and the upper connecting member can be further enabled to follow the direction of the wire, reduce the bending of the wire, reduce the right-angle transition at the support connection, and increase the stability of the connection. When the end of the wire connected to the lower connecting member is too low, that is, the height of the next steel pipe rod is relatively low, the inclination of the lower connecting member is increased, and the lower connecting member can be further enabled to follow the direction of the wire, reduce the bending of the wire, reduce the right-angle transition at the support connection, and increase the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of an existing steel pipe rod used for connecting the upper and lower parts;

[0037] Figure 2 It is a schematic diagram of the steel pipe rod used for connecting the upper and lower parts in the present invention;

[0038] Figure 3 It is a schematic diagram of the appearance structure of the sleeve in the present invention;

[0039] Figure 4 It is a schematic diagram of the installation structure of the ring potentiometer in the present invention;

[0040] Figure 5 It is a schematic diagram of the installation structure of the airbag of the present invention from a side view;

[0041] Figure 6 It is a schematic diagram of the internal cross-sectional installation structure of the lower cross arm of the present invention;

[0042] Figure 7 It is a schematic diagram of the appearance structure of the upper connecting piece of the present invention;

[0043] Figure 8 It is a schematic diagram of the appearance structure of the lower connecting piece of the present invention;

[0044] Fig. 9 A schematic diagram of a further installation structure of the upper connecting member or the lower connecting member of the present invention;

[0045] Fig.10 A further schematic cross-sectional view of the upper connecting member or the lower connecting member of the present invention;

[0046] Fig.11 It is a schematic structural diagram of the upper connecting member or the lower connecting member of the present invention when the angle is further adjusted.

[0047] In the figure: 1. steel pipe rod; 2. electric wire; 3. sleeve; 4. upper cross arm; 5. lower cross arm; 6. upper connecting piece; 7. lower connecting piece; 8. pressing piece; 9. wire groove; 10. positioning hole; 11. central axis; 12. slider; 13. ring potentiometer; 14. connecting ring; 15. support rod; 16. air pump; 17. air bag; 18. connecting plate; 19. U-shaped frame; 20. first slide seat; 21. first motor; 22. first screw; 23. connecting rod; 24. second screw; 25. second motor; 26. second slide seat; 27. solenoid valve; 28. bottom plate. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Example 1, please refer to Figure 1-Figure 3 , Figure 5-Figure 8 , the present invention provides a technical solution:

[0050] An installation and fixing device for overhead wires, comprising a steel pipe pole 1, a sleeve 3 is rotatably connected to the inner side of the top of the steel pipe pole 1, an upper cross arm 4 and a lower cross arm 5 are fixedly connected to the outer side of the sleeve 3, the upper cross arm 4 and the lower cross arm 5 are in the same plane, in an initial state, the plane where the upper cross arm 4 and the lower cross arm 5 are located is perpendicular to the erection direction of the wire 2, an upper connecting piece 6 is fixedly connected to the upper cross arm 4, the upper connecting piece 6 is used to connect and fix the wire 2 at a high position, and a lower connecting piece 7 is slidably connected to the lower cross arm 5, the lower connecting piece 7 is used to connect and fix the wire 2 at a low position;

[0051] The upper cross arm 4 and the lower cross arm 5 are coaxial, and form a lever mechanism with the sleeve 3 as the rotation center. The lever arm ratio of the upper and lower lever arms is changed by changing the position of the lower connecting member 7 on the lower cross arm 5, and finally the sleeve 3 is in the initial state, so that the forces on both sides of the steel tube rod 1 are offset and the balance of the steel tube rod 1 is maintained.

[0052] Under the above arrangement, the invention can effectively make the steel pipe rod 1 in the middle position, which is used for "connecting the upper and lower parts", be in a state of uniform force, and at the same time avoid the situation in which the uneven force is aggravated in windy weather, causing the steel pipe rod 1 in the middle position to tilt and shake;

[0053] In the initial state of the present invention, the planes where the upper cross arm 4 and the lower cross arm 5 are located are perpendicular to the installation direction of the electric wire 2, the upper cross arm 4 is fixedly connected with an upper connecting piece 6 for connecting and fixing the electric wire 2 at a high position, the lower cross arm 5 is slidably connected with a lower connecting piece 7 for connecting and fixing the electric wire 2 at a low position, the upper cross arm 4 and the lower cross arm 5 are coaxial, and the upper cross arm 4 and the lower cross arm 5 form a lever mechanism with the sleeve 3 as the rotation center;

[0054] The ratio of the upper and lower force arms is changed by changing the position of the lower connecting member 7 on the lower cross arm 5. The upper force arm is the distance from the upper connecting member 6 to the sleeve 3. The lower force arm is changed and adjusted according to the position of the lower connecting member 7 on the lower cross arm 5. Finally, the sleeve 3 is in the initial state, and the forces on both sides of the steel pipe rod 1 are offset, thereby maintaining the balance of the steel pipe rod 1 and making the steel pipe rod 1 in the middle position in a uniform force state.

[0055] Specifically, the inner side of the sleeve 3 is fixedly connected with a central axis 11, the inner side of the outer edge of the central axis 11 is embedded with a slider 12, the upper outer edge of the steel pipe rod 1 is fixedly connected with an annular potentiometer 13, the slider 12 slides on the annular potentiometer 13, and the deflection angles of the upper crossarm 4 and the lower crossarm 5 are obtained by the position of the slider 12 on the annular potentiometer 13.

[0056] Under the above setting, the present invention has a central shaft 11 fixedly connected to the inner side of the sleeve 3. When the sleeve 3 rotates, the central shaft 11 rotates concentrically, and the slider 12 slides on the annular potentiometer 13. By obtaining the position of the slider 12 on the annular potentiometer 13, the deflection angle of the upper cross arm 4 and the lower cross arm 5 is obtained, providing data support for the initialization adjustment of the upper cross arm 4 and the lower cross arm 5;

[0057] Specifically, one end of the lower cross arm 5 is fixedly connected to the first motor 21, the end of the main shaft of the first motor 21 is fixedly connected to the first screw 22, the other end of the first screw 22 is rotatably connected to the inner side of the lower cross arm 5, a slide groove is provided at the upper end of the lower cross arm 5, the inner side of the slide groove is slidably connected to the first slide seat 20, the top end of the first slide seat 20 is fixedly connected to the bottom end of the lower connecting member 7, the outer side of the first screw 22 is spirally connected to the inner side of the first slide seat 20, and the position of the lower connecting member 7 on the lower cross arm 5 is changed by the forward or reverse rotation of the first motor 21.

[0058] Under the above setting, the position adjustment method of the lower connecting member 7 on the lower cross arm 5 is that the first motor 21 rotates, and the rotation of the first motor 21 drives the first screw 22 to rotate. Because the first screw 22 is spirally connected to the first slide seat 20, when the first screw 22 rotates, the position of the lower connecting member 7 on the lower cross arm 5 can be changed;

[0059] Specifically, the upper connecting member 6 and the lower connecting member 7 are both arranged to slope downward gradually from the upper direction of the connection to the lower direction of the connection.

[0060] Specifically, the landslide of the upper connecting member 6 is in a concave transition, and the landslide of the lower connecting member 7 is in a convex transition.

[0061] This arrangement can effectively increase the support distance of the wire 2 on the upper connector 6 or the lower connector 7, increase the support arc surface, and reduce the right angle of the support connection, so that the pulling force of the wire 2 can be evenly distributed on the connection surface, avoiding excessive pulling force on the wire 2, resulting in loosening of the wire 2 and falling off of the protective cover;

[0062] Specifically, the upper connecting member 6 and the lower connecting member 7 are both provided with a wire groove 9 for the power supply line 2 to pass through, and the upper connecting member 6 and the lower connecting member 7 are both provided with a positioning hole 10, and the pressing plate 8 is connected to the positioning hole 10 by bolts to fix the wire 2.

[0063] In the present invention, the wire 2 is fixed to the upper connecting member 6 or the lower connecting member 7 by connecting the pressing sheet 8 to the positioning hole 10 by means of bolts to fix the wire 2 .

[0064] Example 2: This example is a further improvement of Example 1. Figure 1-8A connecting plate 18 is also fixedly connected to the outside of the sleeve 3, a connecting ring 14 is also fixedly connected to the upper side of the steel pipe rod 1, a support rod 15 is fixedly connected to the outside of the connecting ring 14, a U-shaped frame 19 is fixedly connected to the top of the support rod 15, and airbags 17 are fixedly connected to both ends of the inner side of the U-shaped frame 19. The connecting plate 18 is arranged between the two airbags 17, and the rotational damping force of the connecting plate 18 and the sleeve 3 can be adjusted by adjusting the expansion degree of the airbag 17.

[0065] Specifically, the end of the support rod 15 is fixedly connected to an air pump 16, and the output end of the air pump 16 is connected to the inner side of the two airbags 17 through the built-in pipeline of the U-shaped frame 19, so as to realize the inflation inside the airbag 17, and the airbag 17 is provided with a solenoid valve 27 for exhaust.

[0066] Under the above settings, the upper connecting member 6 and the lower connecting member 7 connected to the electric wire 2 in the present invention are fixed on the sleeve 3 in the active state, that is, the original rigid fixation is changed to flexible fixation. When encountering strong winds, the solenoid valve 27 is opened to reduce the expansion degree of the airbag 17, so that the connecting plate 18 is in an active state, the rotation damping force of the sleeve 3 is reduced, and the upper cross arm 4 and the lower cross arm 5 are in an active state. The shaking degree and frequency of the electric wire 2 on both sides of the top of the steel pipe rod 1 are difficult to keep consistent. The upper cross arm 4 and the lower cross arm 5 can have a certain buffer space in strong winds. The sleeve 3 will repeatedly deflect to the side with greater pulling to compensate, so as to prevent the pulling force of the electric wire 2 from being too large in strong winds and causing the electric wire 2 to be torn off. When there is no wind, the airbag 17 is inflated by the air pump 16, the expansion degree of the airbag 17 is increased, the connecting plate 18 is in a limited state, the rotation damping force of the sleeve 3 is increased, and the stability of the upper cross arm 4 and the lower cross arm 5 is increased.

[0067] Example 3: This example is a further improvement of Example 1. Figure 1-11 The bottom end of the upper connecting member 6 and the lower connecting member 7 is rotatably connected with a bottom plate 28, the bottom plate 28 at the upper connecting member 6 is fixedly connected to the upper cross arm 4, the bottom plate 28 at the lower connecting member 7 is fixedly connected to the top of the first slide 20, the inner side of the bottom plate 28 is fixedly connected to the second motor 25, the spindle end of the second motor 25 is fixedly connected to the second screw 24, the outer side of the second screw 24 is spirally connected to the second slide 26, the second slide 26 is slidably connected to the inner side of the bottom plate 28, the top end of the second slide 26 is rotatably connected with a connecting rod 23 through a hinge, the other end of the connecting rod 23 is rotatably connected to the inner side of the bottom end of the upper connecting member 6 or the lower connecting member 7 through a hinge, and the angle of the upper connecting member 6 or the lower connecting member 7 is adjusted by rotating the respective second motors 25.

[0068] Under the above settings, the present invention can rotate the second motor 25 to drive the second screw rod 24 to rotate, so that the second slide 26 can slide left and right. During the sliding of the second slide 26 left and right, the inclination angle of the upper connecting member 6 or the lower connecting member 7 can be changed. When the starting end of the wire 2 connected by the upper connecting member 6 is too high, that is, the height of the previous steel pipe rod is high, the inclination degree of the upper connecting member 6 is increased, and the upper connecting member 6 can be further made to follow the direction of the wire 2, reduce the bending of the wire 2, reduce the right-angle transition at the support connection, and increase the stability of the connection;

[0069] When the end of the wire 2 connected to the lower connecting piece 7 is too low, that is, the height of the next steel pipe pole is low, the inclination of the lower connecting piece 7 is increased, and the lower connecting piece 7 can further follow the direction of the wire 2, reduce the bending of the wire 2, reduce the right-angle transition at the supporting connection, and increase the stability of the connection.

[0070] The present invention also discloses a method for installing and fixing overhead wires, the steps of which are:

[0071] Step 1: The upper connecting piece 6 on the upper cross arm 4 is fixedly connected to the upper side of the wire 2, and the lower connecting piece 7 on the lower cross arm 5 is fixedly connected to the lower side of the wire 2, and the wire 2 is kept connected and of sufficient length between the upper connecting piece 6 and the lower connecting piece 7;

[0072] Step 2: The position of the lower connecting member 7 on the lower cross arm 5 is changed by the first motor 21, and the ratio of the upper and lower force arms is changed. Referring to the position of the slider 12 on the ring potentiometer 13, the sleeve 3 is finally placed in the initial state, so that the forces on both sides of the steel pipe rod 1 are offset and the balance of the steel pipe rod 1 is maintained;

[0073] Step three: When encountering strong winds, open the solenoid valve 27 to reduce the expansion of the airbag 17, make the connecting plate 18 active, reduce the rotational damping force of the sleeve 3, and make the upper crossarm 4 and the lower crossarm 5 active. The shaking degree and frequency of the wires 2 on both sides of the top of the steel pipe pole 1 are difficult to keep consistent. The upper crossarm 4 and the lower crossarm 5 can have a certain buffer space in strong winds, and the sleeve 3 will repeatedly deflect to the side with greater pulling to compensate, so as to prevent the pulling force of the wire 2 from being too large and causing the wire 2 to be torn off in strong winds.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for fixing an overhead wire, comprising a steel pipe pole (1), characterized in that: The top inner side of the steel pipe rod (1) is rotatably connected to a sleeve (3), and the outer side of the sleeve (3) is fixedly connected to an upper cross arm (4) and a lower cross arm (5), and the upper cross arm (4) and the lower cross arm (5) are located in the same plane. In an initial state, the plane where the upper cross arm (4) and the lower cross arm (5) are located is perpendicular to the installation direction of the electric wire (2), and the upper cross arm (4) is fixedly connected to an upper connecting piece (6), and the upper connecting piece (6) is used to connect and fix the electric wire (2) at a high position, and the lower cross arm (5) is slidably connected to a lower connecting piece (7), and the lower connecting piece (7) is used to connect and fix the electric wire (2) at a low position; The upper cross arm (4) and the lower cross arm (5) are coaxial, and the upper cross arm (4) and the lower cross arm (5) form a lever mechanism with the sleeve (3) as the rotation center. The ratio of the upper and lower force arms is changed by changing the position of the lower connecting member (7) on the lower cross arm (5), and finally the sleeve (3) is in an initial state, so that the forces on both sides of the steel tube rod (1) are offset, thereby maintaining the balance of the steel tube rod (1); The outer side of the sleeve (3) is also fixedly connected to a connecting plate (18); the upper side of the steel tube rod (1) is also fixedly connected to a connecting ring (14); the outer side of the connecting ring (14) is fixedly connected to a supporting rod (15); the top end of the supporting rod (15) is fixedly connected to a U-shaped frame (19); both ends of the inner side of the U-shaped frame (19) are fixedly connected to airbags (17); the connecting plate (18) is arranged between the two airbags (17); and the rotation damping force of the connecting plate (18) and the sleeve (3) is adjusted by adjusting the expansion degree of the airbags (17); The end of the support rod (15) is fixedly connected to an air pump (16); the output end of the air pump (16) is connected to the inner side of the two air bags (17) via a pipeline built into the U-shaped frame (19) for achieving inflation of the air bags (17); and the air bags (17) are provided with a solenoid valve (27) for exhausting air; The bottom ends of the upper connecting member (6) and the lower connecting member (7) are rotatably connected to a bottom plate (28); the bottom plate (28) at the upper connecting member (6) is fixedly connected to the upper cross arm (4); the bottom plate (28) at the lower connecting member (7) is fixedly connected to the top end of the first slide seat (20); the inner side of the bottom plate (28) is fixedly connected to a second motor (25); the end of the main shaft of the second motor (25) is fixedly connected to a second screw rod (24); the outer side of the second screw rod (24) is spirally connected to a second slide seat (26); the second slide seat (26) is slidably connected to the inner side of the bottom plate (28); the top end of the second slide seat (26) is rotatably connected to a connecting rod (23) via a hinge; the other end of the connecting rod (23) is rotatably connected to the inner side of the bottom end of the upper connecting member (6) or the lower connecting member (7) via a hinge; the angle of the upper connecting member (6) or the lower connecting member (7) is adjusted by the rotation of the respective second motors (25).

2. The installation and fixing device for overhead wires according to claim 1, characterized in that: The inner side of the sleeve (3) is fixedly connected to a central axis (11), the inner side of the outer edge of the central axis (11) is embedded with a slider (12), the upper outer edge of the steel tube rod (1) is fixedly connected to an annular potentiometer (13), the slider (12) slides on the annular potentiometer (13), and the deflection angles of the upper cross arm (4) and the lower cross arm (5) are obtained by the position of the slider (12) on the annular potentiometer (13).

3. The installation and fixing device for overhead wires according to claim 2, characterized in that: One end of the lower cross arm (5) is fixedly connected to a first motor (21), a main shaft end of the first motor (21) is fixedly connected to a first screw rod (22), the other end of the first screw rod (22) is rotatably connected to the inner side of the lower cross arm (5), a slide groove is provided at the upper end of the lower cross arm (5), a first slide seat (20) is slidably connected to the inner side of the slide groove, the top end of the first slide seat (20) is fixedly connected to the bottom end of the lower connecting member (7), the outer side of the first screw rod (22) is spirally connected to the inner side of the first slide seat (20), and the position of the lower connecting member (7) on the lower cross arm (5) is changed by the forward or reverse rotation of the first motor (21).

4. The installation and fixing device for overhead wires according to claim 3, characterized in that: The upper connecting member (6) and the lower connecting member (7) are both arranged in a gradually downwardly sloping manner from the upper direction of the connection to the lower direction of the connection.

5. The installation and fixing device for overhead wires according to claim 4, characterized in that: The landslide of the upper connecting member (6) presents a concave transition, and the landslide of the lower connecting member (7) presents a convex transition.

6. The installation and fixing device for overhead wires according to claim 5, characterized in that: The upper connecting member (6) and the lower connecting member (7) are both provided with a wire groove (9) through which the power supply wire (2) passes. The upper connecting member (6) and the lower connecting member (7) are both provided with a positioning hole (10). The pressing plate (8) is connected to the positioning hole (10) by bolts to fix the wire (2).

7. A method for installing and fixing overhead wires, characterized in that: The steps of using the installation and fixing device for overhead wires as claimed in claim 6 are: Step 1: The upper connecting piece (6) on the upper cross arm (4) is fixedly connected to the upper side of the electric wire (2), and the lower connecting piece (7) on the lower cross arm (5) is fixedly connected to the lower side of the electric wire (2), and the electric wire (2) is kept connected and of sufficient length between the upper connecting piece (6) and the lower connecting piece (7); Step 2: The position of the lower connecting member (7) on the lower cross arm (5) is changed by the first motor (21), thereby changing the ratio of the upper and lower force arms, and referring to the position of the slider (12) on the ring potentiometer (13), so that the sleeve (3) is finally in the initial state, so that the forces on both sides of the steel tube rod (1) are offset, thereby maintaining the balance of the steel tube rod (1); Step 3: When encountering strong winds, the solenoid valve (27) is opened to reduce the expansion degree of the airbag (17), so that the connecting plate (18) is in an active state, the rotation damping force of the sleeve (3) is reduced, and the upper cross arm (4) and the lower cross arm (5) are in an active state. The shaking degree and frequency of the wires (2) on both sides of the top of the steel pipe rod (1) are difficult to be consistent. The upper cross arm (4) and the lower cross arm (5) can have a certain buffer space in strong winds, and the sleeve (3) will repeatedly deflect to the side with greater pulling to compensate, so as to prevent the wire (2) from being torn off due to excessive pulling force in strong winds.

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