Suspension fitting string connecting device capable of reducing lead icing unbalanced tension

Abstract

The invention relates to a suspension fitting string connecting device for reducing lead icing unbalanced tension. A cross arm connecting assembly is used for connecting a cross arm main material of a tower; the first end of the load buffer assembly is connected with the cross arm connecting assembly, and the second end is connected with the guide rail assembly; the guide rail assembly is provided with an outer arc-shaped guide rail, and the guide rail pulley is slidably arranged on the outer arc-shaped guide rail, so that the guide rail pulley has an outer arc-shaped sliding range along the guide rail assembly. The suspension fitting string connecting assembly is arranged below the guide rail pulley, and the suspension fitting string connecting assembly is used for being connected with a suspension fitting string of the tower. On one hand, a load buffering effect is achieved, the impact of a wire load on the suspension clamp is relieved, unbalanced tension of adjacent gears of a power transmission wire is reduced, the possibility of occurrence of accidents such as line breakage is reduced, and then the operation safety of the line in rainy and snowy weather, especially when the line is seriously iced, is improved; and on the other hand, the device is simple in structure, convenient to install and suitable for large-scale popularization and application.

Description

Technical Field

[0001] The present application relates to the field of overhead power transmission line hardware, and in particular to a suspension hardware string connection device for alleviating unbalanced tension of conductors covered with ice. Background Art

[0002] Connection fittings are used to connect insulators, suspension clamps, tension clamps and protective fittings into suspension or tension strings. For example, line fittings are used to suspend and tighten insulators and conductors on overhead power lines, to connect and prevent shocks on conductors and lightning arresters, and to tighten and adjust cable pulls.

[0003] As the scale of power grid continues to expand, the safe and stable operation of power system has received more and more attention. Suspension clamps are widely used in transmission lines as a kind of connection hardware. The operation time of suspension clamps hanging on the grid is increasing, and its safe operation problem directly affects the safety and reliability of the entire transmission system.

[0004] During the entire long-term operation of the transmission line, it will experience factors such as rain, snow and ice weather, air vortex, line dancing, thermal expansion and contraction of the conductor. When cold raindrops condense on the wires, the ground wire will be covered with ice. If all the wires within a range are covered with ice, the line will be covered with ice. Ice causes thin wires to freeze. For high-voltage wires for long-distance power transmission, the iron towers supporting the high-voltage wires increase the load. Severe ice makes the iron tower unable to support these wires and collapse. When the transmission line is severely iced, there are many disasters such as uneven ice coverage and ice-breaking. Among them, there will be a large load at the wire suspension point, especially when the line is broken due to ice, the line is de-iced and uneven ice coverage, which will cause a large load on the suspension clamp at the wire suspension point. This unbalanced load can easily damage the weak position of the suspension clamp, such as the U-bolt fixing point, causing the suspension clamp to break. Summary of the invention

[0005] Based on this, it is necessary to provide a suspension fitting string connection device that can reduce the unbalanced tension of conductor ice coating.

[0006] In one embodiment, a suspension hardware string connection device for reducing unbalanced tension of conductor ice coating includes a cross arm connection assembly, a load buffer assembly, a guide rail assembly, a suspension hardware string connection assembly and a guide rail pulley;

[0007] The cross arm connection assembly is used to connect the cross arm main material of the tower;

[0008] The first end of the load buffer assembly is connected to the cross arm connection assembly, and the second end is connected to the guide rail assembly;

[0009] The guide rail assembly is provided with an outer arc-shaped guide rail, and the guide rail pulley is slidably arranged on the outer arc-shaped guide rail, so that the guide rail pulley has an outer arc-shaped sliding range along the guide rail assembly;

[0010] The suspension hardware string connection assembly is arranged under the guide rail pulley, and the suspension hardware string connection assembly is used to connect the suspension hardware string of the pole tower.

[0011] The above-mentioned suspension hardware string connection device, through the coordinated design of the crossarm connection assembly, the load buffer assembly, the guide rail assembly, the suspension hardware string connection assembly and the guide rail pulley, on the one hand plays a load buffering role, which is beneficial to reduce the impact of the conductor load on the suspension wire clamp and reduce the unbalanced tension of adjacent gears of the transmission line, thereby reducing the possibility of accidents such as line breakage, and thus increasing the safety of line operation in rainy and snowy weather, especially when the line is severely covered with ice; on the other hand, it has the advantages of simple structure and easy installation, and is suitable for large-scale promotion and application.

[0012] In one embodiment, the guide rail assembly is provided with limiting structures at both ends of the outer arc-shaped guide rail to limit the extreme sliding position of the guide rail pulley; or,

[0013] The guide rail assembly is provided with a deceleration structure at both ends of the outer arc-shaped guide rail to limit the sliding speed of the guide rail pulley at both ends of the outer arc-shaped guide rail.

[0014] Exemplarily, in one of the embodiments, the guide rail assembly is provided with guide rail buffer rubber pads on both sides of the outer arc-shaped guide rail to reduce the deflection angle of the guide rail pulley and the suspension hardware string connection assembly.

[0015] In one embodiment, the guide rail assembly is further provided with a guide rail connecting plate, and the second end of the load buffer assembly is connected to the guide rail connecting plate;

[0016] The outer arc guide rail is arranged under the guide rail connecting plate.

[0017] In one embodiment, the guide rail connecting plate is a plate structure or a frame structure; and / or,

[0018] The guide rail connecting plate has a bottom portion which is adapted to the shape of the outer arc-shaped guide rail.

[0019] In one embodiment, the load buffer assembly is provided with a buffer device, and the buffer device is connected between the cross arm connection assembly and the guide rail assembly.

[0020] In one embodiment, the buffer device includes a disc spring.

[0021] In one of the embodiments, the load buffer assembly is further provided with a U-shaped ring or an O-shaped ring, and the U-shaped ring or the O-shaped ring is connected between the cross arm connection assembly and the buffer device.

[0022] In one embodiment, the cross arm connection assembly includes an I-shaped fixing plate, and the I-shaped fixing plate is used to connect the cross arm main material of the tower;

[0023] The first end of the load buffer assembly is connected to the I-shaped fixing plate.

[0024] In one embodiment, the number of the I-shaped fixing plates is at least two; or,

[0025] The cross arm connection assembly further comprises a cross arm connecting plate, the I-shaped fixing plate is connected to the cross arm connecting plate, and the first end of the load buffer assembly is connected to the I-shaped fixing plate via the cross arm connecting plate.

[0026] In one of the embodiments, the suspension hardware string connection assembly is a hardware connection ring, which is used to connect the suspension hardware string of the tower in a buckle manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a structural schematic diagram of an embodiment of a suspension hardware string connection device for reducing unbalanced tension caused by icing on a conductor as described in the present application.

[0029] Figure 2 for Figure 1 Schematic diagram of the application of the illustrated embodiment.

[0030] Figure 3 This is a schematic structural diagram of a cross-arm connection assembly of another embodiment of a suspension hardware string connection device for alleviating unbalanced tension of conductor icing as described in the present application.

[0031] Reference numerals:

[0032] Suspended hardware string connection device 100, cross arm connection assembly 200, load buffer assembly 300, guide rail assembly 400, suspended hardware string connection assembly 500, guide rail pulley 600, cross arm main material 700;

[0033] I-shaped fixing plate 210 , cross arm connecting plate 220 , U-shaped ring 310 , buffer device 320 , guide rail connecting plate 410 , guide rail 420 . DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0039] The present application discloses a suspension hardware string connection device for reducing the unbalanced tension of conductor ice coating, which includes some or all of the technical features of the following embodiments; that is, the suspension hardware string connection device for reducing the unbalanced tension of conductor ice coating includes some or all of the following structures. In one embodiment of the present application, a suspension hardware string connection device for reducing the unbalanced tension of conductor ice coating includes a crossarm connection assembly, a load buffer assembly, a guide rail assembly, a suspension hardware string connection assembly and a guide rail pulley; the crossarm connection assembly is used to connect the crossarm main material of the pole tower; the first end of the load buffer assembly is connected to the crossarm connection assembly, and the second end is connected to the guide rail assembly; the guide rail assembly is provided with an outer arc guide rail, and the guide rail pulley is slidably arranged on the outer arc guide rail so that the guide rail pulley has an outer arc sliding range along the guide rail assembly; the suspension hardware string connection assembly is arranged under the guide rail pulley, and the suspension hardware string connection assembly is used to connect the suspension hardware string of the pole tower. The above-mentioned suspension hardware string connection device, through the coordinated design of the cross arm connection assembly, load buffer assembly, guide rail assembly, suspension hardware string connection assembly and guide rail pulley, on the one hand, plays a load buffering role, which is conducive to reducing the impact of the conductor load on the suspension wire clamp and reducing the unbalanced tension of adjacent gears of the transmission line, thereby reducing the possibility of accidents such as line disconnection, thereby increasing the safety of line operation in rainy and snowy weather, especially when the line is severely covered with ice; on the other hand, it has the advantages of simple structure and easy installation, and is suitable for large-scale promotion and application. Figures 1 to 3 , the suspension hardware string connection device for reducing the unbalanced tension of conductor ice coating is described in detail.

[0040] In one embodiment, a suspension hardware string connection device 100 for reducing unbalanced tension of conductor ice coating is as follows: Figure 1 As shown, it includes a crossarm connection assembly 200, a load buffer assembly 300, a guide rail assembly 400, a suspension fitting string connection assembly 500 and a guide rail pulley 600; as an example, the crossarm connection assembly 200 is used to be installed to the outside and serves as a load-bearing supporting structure for other components; the load buffer assembly 300 is used to provide a buffering effect; the guide rail assembly 400 provides a sliding environment; the suspension fitting string connection assembly 500 is connected to the suspension fitting string, and slides on the guide rail assembly 400 through the guide rail pulley 600 to achieve force balance, avoid line breakage due to icing, line de-icing and unbalanced loads during uneven icing, thereby improving the stability of the overall structure and the safety of the power transmission system.

[0041] In one embodiment, the cross arm connection assembly 200 is used to connect the cross arm main material 700 of the tower; the cross arm main material 700 is usually a steel frame, for example, the cross arm main material 700 is a tower cross arm angle steel. Figure 2As shown, the cross arm connection assembly 200 includes an I-shaped fixing plate 210, and the I-shaped fixing plate 210 is used to connect the cross arm main material 700 of the pole tower; the first end of the load buffer assembly 300 is connected to the I-shaped fixing plate 210. As an example, the number of the I-shaped fixing plates 210 is at least two. Exemplarily, the I-shaped fixing plate 210 is provided with reinforcing ribs in the extension direction of the cross arm main material 700 and in the lateral direction perpendicular to the extension direction to improve the structural strength. With such a design, the suspension hardware string connection device 100 can be quickly installed on the cross arm main material 700 of the pole tower through the I-shaped fixing plate 210.

[0042] For the embodiment with I-shaped fixing plate 210, in one embodiment, the cross arm connection assembly 200 further includes a cross arm connecting plate 220, the I-shaped fixing plate 210 is connected to the cross arm connecting plate 220, and the first end of the load buffer assembly 300 is connected to the I-shaped fixing plate 210 through the cross arm connecting plate 220. Such a design, using the cross arm connecting plate 220, can combine multiple I-shaped fixing plates 210, so that the cross arm connection assembly 200 is an integral structure, thereby realizing the rapid assembly of the suspension hardware string connection device 100, which is conducive to improving the installation efficiency of front-line construction personnel.

[0043] In one embodiment, the first end of the load buffer assembly 300 is connected to the cross arm connection assembly 200, and the second end is connected to the guide rail assembly 400; in one embodiment, Figure 2 As shown, the load buffer assembly 300 is provided with a buffer device 320, and the buffer device 320 is connected between the cross arm connection assembly 200 and the guide rail assembly 400. As an example, the buffer device 320 includes a disc spring. In other embodiments, the buffer device 320 may also include a cylindrical coil spring or an elastic block. Through the elastic buffering effect of the buffer device 320, a large impact force on the connecting structure is avoided when unbalanced tension occurs due to ice coating on the conductor, thereby playing a load buffering role, which is beneficial to protecting the suspension wire clamp and other connecting structural parts, thereby reducing the possibility of accidents such as line disconnection.

[0044] In order to facilitate the installation of the buffer device 320, the load buffer assembly 300 is exemplarily further provided with a connecting ring, and the connecting ring is connected between the cross arm connecting assembly 200 and the buffer device 320. As an example, Figure 2As shown, the connecting ring is an O-ring or a U-ring 310. In one embodiment, the load buffer assembly 300 is further provided with a U-ring 310, and the U-ring 310 is connected between the cross arm connection assembly 200 and the buffer device 320. In other embodiments, the U-ring 310 can be replaced by an O-ring or a similar connection structure. As an example, the load buffer assembly 300 is further provided with an O-ring, and the O-ring is connected between the cross arm connection assembly 200 and the buffer device 320. Exemplarily, the O-ring is an annular spring member. On the one hand, the annular spring member cooperates with the buffer device 320 to play a dual buffering role. On the other hand, it is beneficial for the load buffer assembly 300 to quickly and firmly connect the cross arm connection assembly 200, so as to facilitate the assembly of the suspension hardware string connection device 100.

[0045] In one embodiment, if Figure 2 As shown, the guide rail assembly 400 is provided with an outer arc-shaped guide rail 420, and the guide rail pulley 600 is slidably arranged on the outer arc-shaped guide rail 420, so that the guide rail pulley 600 has an outer arc-shaped sliding range along the guide rail assembly 400; exemplarily, the outer arc-shaped guide rail 420 has a symmetrical shape. Exemplarily, the track of the outer arc-shaped guide rail 420 is an arc or an elliptical arc, and in the direction of gravity, the middle position of the guide rail pulley 600 in the outer arc-shaped guide rail 420 is lower than the positions of the guide rail pulley 600 at both ends of the outer arc-shaped guide rail 420. The outer arc-shaped guide rail 420 allows the guide rail pulley 600 to have a certain displacement environment when subjected to force, and cooperates with the buffering effect of the buffer device 320, especially the double buffering effect of the annular spring member and the buffer device 320. Compared with guide rails of other shapes, on the one hand, it has a better load buffering effect, effectively reducing the impact of the conductor load on the suspension clamp and reducing the unbalanced tension of adjacent gears of the transmission conductor, thereby reducing the possibility of accidents such as line breakage, thereby increasing the safety of line operation in rainy and snowy weather, especially when the line is severely covered with ice; on the other hand, it is conducive to adapting to harsh outdoor environments. The impact force brought by the suspension hardware string through the suspension hardware string connecting assembly 500 is reduced by the cooperation of the guide rail sliding method and the load buffering method, thereby ensuring the safety and reliability of the overall structure.

[0046] In one embodiment, the guide rail assembly 400 is provided with limiting structures at both ends of the outer arc-shaped guide rail 420 to limit the extreme sliding position of the guide rail pulley 600; this can prevent the guide rail pulley 600 from sliding out of the outer arc-shaped guide rail 420 when the force is too large. As an example, the limiting structure can be implemented by screws, or can be integrally formed with the outer arc-shaped guide rail 420.

[0047] In one embodiment, the guide rail assembly 400 is provided with a deceleration structure at both ends of the outer arc guide rail 420 to limit the sliding rate of the guide rail pulley 600 at both ends of the outer arc guide rail 420; illustratively, the deceleration structure is a wedge-shaped rubber pad, and the number of the wedge-shaped rubber pads is a pair, and the end of the wedge-shaped rubber pad close to the middle position of the outer arc guide rail 420 is thinner, and the end of the wedge-shaped rubber pad close to the end position of the outer arc guide rail 420 is thicker, which plays a deceleration effect of enhancing friction. Such a design enables the guide pulley 600 to have a higher speed in the middle position of the outer arc guide rail 420 and a lower speed at the two end positions of the outer arc guide rail 420. This can prevent the guide pulley 600 from sliding out of the outer arc guide rail 420 when the force is too large, and can also prevent the left and right shaking impact when the force is too large, thereby further reducing the unbalanced tension of adjacent gears of the transmission line and ensuring the safety of the line operation in rainy and snowy weather, especially when the line is severely covered with ice.

[0048] For example, in one embodiment, the guide rail assembly 400 is provided with guide rail buffer rubber pads on both sides of the outer arc-shaped guide rail 420 to reduce the deflection angle of the guide rail pulley 600 and the suspension hardware string connection assembly 500. Compared with the previous embodiment in which a deceleration structure is provided at both ends of the outer arc-shaped guide rail 420, the present embodiment is provided with guide rail buffer rubber pads on both sides of the outer arc-shaped guide rail 420, which plays a role in reducing the deflection angle of the guide rail pulley 600 and the suspension hardware string connection assembly 500, and is also conducive to further reducing the unbalanced tension of adjacent gears of the transmission line, and the cooperation effect of the two is better.

[0049] Exemplarily, the guide pulley 600 rolls and slides on the outer arc guide rail 420 in a roller skating manner. The slideway of the outer arc guide rail 420 has an undulating structure, which is superior to a smooth slideway. It was found in preliminary research that such an undulating structure is beneficial to increasing the kinetic energy hindrance properties of the guide pulley 600 and the guide rail assembly 400, so that the kinetic energy of the deflection angle of the suspension hardware string connection assembly 500 is first eliminated by the guide pulley 600 and the guide rail assembly 400 before being transmitted to the load buffer assembly 300, and then the impact force on the load buffer assembly 300 is greatly reduced. This is different from traditional smooth sliding or rolling, and is also beneficial to reducing the large impact force on the connecting structure when unbalanced tension occurs when the conductor is covered with ice, thereby helping to protect the suspension wire clamp and other connecting structures.

[0050] In order to facilitate the installation of the guide rail assembly 400 or its outer arc guide rail 420, in one embodiment, the guide rail assembly 400 is also provided with a guide rail connecting plate 410, and the second end of the load buffer assembly 300 is connected to the guide rail connecting plate 410; the outer arc guide rail 420 is arranged under the guide rail connecting plate 410. In one embodiment, the guide rail connecting plate 410 is a plate structure or a frame structure. In one embodiment, the guide rail connecting plate 410 has a bottom that is adapted to the shape of the outer arc guide rail 420. In one embodiment, the guide rail connecting plate 410 is a plate structure or a frame structure, and the guide rail connecting plate 410 has a bottom that is adapted to the shape of the outer arc guide rail 420. The rest of the embodiments are similar and will not be described in detail. Exemplarily, the guide rail connecting plate 410 is integrally arranged with the outer arc guide rail 420. Such a structural design ensures a stable connection between the outer arc guide rail 420 and the guide rail connecting plate 410, ensuring that the suspension hardware string connection device 100 has sufficient structural strength while reducing the unbalanced tension caused by icing on the conductor, thereby avoiding an increase in safety risks due to the addition of new accessories.

[0051] In one embodiment, the suspension hardware string connection assembly 500 is arranged under the guide rail pulley 600, and the suspension hardware string connection assembly 500 is used to connect the suspension hardware string of the pole tower. As an example, the suspension hardware string connection assembly 500 is a hardware connection ring, which is used to connect the suspension hardware string of the pole tower in a buckle manner. In other embodiments, the suspension hardware string connection assembly 500 can also adopt a snap-on connector or an interference fit connector, and a snap-on connection method or an interference fit method is used to obtain a simple, convenient, stable, easy to implement and low-cost implementation method, so that the suspension hardware string connection device 100 maintains the advantages of simple structure and easy installation, and is suitable for large-scale promotion and application.

[0052] The following is an example of the suspension hardware string connection device 100. In one embodiment, the suspension hardware string connection device 100 is installed between the suspension hardware string and the conductor crossarm, the upper end is connected to the crossarm angle steel of the tower, and the lower end is connected to the suspension hardware string, which is used to reduce the unbalanced tension of the conductor ice. Specifically, the suspension hardware string connection device 100 includes a crossarm connection assembly 200, a load buffer assembly 300, a guide rail assembly 400, a suspension hardware string connection assembly 500 and a guide rail pulley 600. The crossarm connection assembly 200 is used to connect the tower. The cross arm main material 700; the first end of the load buffer assembly 300 is connected to the cross arm connection assembly 200, and the second end is connected to the guide rail assembly 400; the guide rail assembly 400 is provided with an outer arc guide rail 420, and the guide rail pulley 600 is slidably arranged on the outer arc guide rail 420, so that the guide rail pulley 600 has an outer arc sliding range along the guide rail assembly 400; the suspension hardware string connection assembly 500 is arranged under the guide rail pulley 600, and the suspension hardware string connection assembly 500 is used to connect the suspension hardware string of the pole tower. The suspension hardware string connection assembly 500 can be connected to the suspension hardware string at the lower end through a hanging ring, and a hardware connection ring can also be used as the suspension hardware string connection assembly 500.

[0053] In one embodiment, the cross arm connection assembly 200 is provided with an I-shaped fixing plate 210, that is, the cross arm connection assembly 200 is designed with an I-shaped fixing plate 210, and is connected to the cross arm main material angle steel of the tower, that is, the cross arm main material 700 through the I-shaped fixing plate 210. As an example, the I-shaped fixing plate 210 and the main material angle steel are fixedly connected by bolts, and the I-shaped fixing plate 210 is designed with reinforcing ribs to enhance the structural strength. As an example, the cross arm connection assembly 200 is also provided with a cross arm connecting plate 220 as a conductor connecting plate, or the cross arm connecting plate 220 can also be used as a part of the cross arm main material 700, that is, the cross arm connecting plate 220 belongs to the cross arm main material 700.

[0054] In one embodiment, the load buffer assembly 300 is connected to the upper I-shaped fixing plate 210 through a connecting ring; in other embodiments, the load buffer assembly 300 is connected to the upper cross arm connecting plate 220 or the cross arm main material 700 through a connecting ring. As an example, a buffer device 320 is provided in the middle of the load buffer assembly 300, and a buffer butterfly spring 321 is designed inside to play a role in buffering the load. As an example, the lower end of the load buffer assembly 300 is connected to the guide rail assembly 400 or its guide rail connecting plate 410. In this way, the three buffer designs are coordinated to play a role in buffering the load in the entire cross arm position as much as possible. The fixed connection between the I-shaped fixing plate 210 and the tower cross arm, such as the cross arm main material 700, the sliding connection of the guide rail pulley 600 and the guide rail assembly 400, as well as the buffer design of the load buffer assembly 300, reduce the deflection angle of the suspension hardware and the impact load on the suspension wire clamp, and ensure the safety and reliability of the overall structure.

[0055] In one of the embodiments, the guide pulley 600 is slidably disposed on the guide rail assembly 400 or its outer arc guide rail 420. When the suspension hardware string has unbalanced tension in adjacent gear spans, compared with the traditional suspension hardware string, it needs to deflect significantly. In the present application, the suspension hardware string slides along the guide pulley 600 on the guide rail assembly 400 or its outer arc guide rail 420 when the unbalanced force acts on it. The design of the limiting structure, the deceleration structure and / or the guide rail buffer rubber pad is beneficial to reducing the deflection angle of the suspension hardware string, thereby reducing the pressure on the suspension wire clamp and improving the safety of the suspension hardware string and the overall system. Such a design, through the coordinated design of the cross arm connection assembly 200, the load buffer assembly 300, the guide rail assembly 400, the suspension hardware string connection assembly 500 and the guide rail pulley 600, on the one hand, plays a load buffering role, which is beneficial to reduce the impact of the conductor load on the suspension wire clamp and reduce the unbalanced tension of adjacent gears of the transmission line, thereby reducing the possibility of accidents such as line breakage, and further increasing the safety of line operation in rainy and snowy weather, especially when the line is severely covered with ice, and has a good load balancing effect when the line is de-iced and unevenly covered with ice.

[0056] It should be noted that other embodiments of the present application also include a suspension hardware string connection device that is formed by combining the technical features in the above embodiments and can be implemented to reduce the unbalanced tension of conductor icing.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating, characterized in that: It comprises a cross arm connection assembly (200), a load buffer assembly (300), a guide rail assembly (400), a hanging hardware string connection assembly (500) and a guide rail pulley (600); The cross arm connection assembly (200) is used to connect the cross arm main material (700) of the tower; The first end of the load buffer assembly (300) is connected to the cross arm connection assembly (200), and the second end is connected to the guide rail assembly (400); The guide rail assembly (400) is provided with an outer arc-shaped guide rail (420), and the guide rail pulley (600) is slidably arranged on the outer arc-shaped guide rail (420), so that the guide rail pulley (600) has an outer arc-shaped sliding range along the guide rail assembly (400); The suspension hardware string connection assembly (500) is arranged under the guide rail pulley (600), and the suspension hardware string connection assembly (500) is used to connect the suspension hardware string of the pole tower.

2. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 1, characterized in that: The guide rail assembly (400) is provided with limiting structures at both ends of the outer arc-shaped guide rail (420) to limit the extreme sliding position of the guide rail pulley (600); or, The guide rail assembly (400) is provided with a deceleration structure at both ends of the outer arc-shaped guide rail (420) to limit the sliding speed of the guide rail pulley (600) at both ends of the outer arc-shaped guide rail (420).

3. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 1, characterized in that: The guide rail assembly (400) is further provided with a guide rail connecting plate (410), and the second end of the load buffer assembly (300) is connected to the guide rail connecting plate (410); The outer arc-shaped guide rail (420) is arranged under the guide rail connecting plate (410).

4. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 3, characterized in that: The guide rail connecting plate (410) is a plate structure or a frame structure; and / or, The guide rail connecting plate (410) has a bottom portion that matches the shape of the outer arc-shaped guide rail (420).

5. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 1, characterized in that: The load buffer assembly (300) is provided with a buffer device (320), and the buffer device (320) is connected between the cross arm connection assembly (200) and the guide rail assembly (400).

6. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 5, characterized in that: The buffer device (320) comprises a disc spring.

7. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 5, characterized in that: The load buffer assembly (300) is further provided with a U-shaped ring (310) or an O-shaped ring, and the U-shaped ring (310) or the O-shaped ring is connected between the cross arm connection assembly (200) and the buffer device (320).

8. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 1, characterized in that: The cross arm connection assembly (200) comprises an I-shaped fixing plate (210), and the I-shaped fixing plate (210) is used to connect a cross arm main material (700) of a pole tower; The first end of the load buffer assembly (300) is connected to the I-shaped fixing plate (210).

9. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to claim 8, characterized in that: The number of the I-shaped fixing plates (210) is at least two; or, The cross arm connection assembly (200) further comprises a cross arm connecting plate (220), the I-shaped fixing plate (210) is connected to the cross arm connecting plate (220), and the first end of the load buffer assembly (300) is connected to the I-shaped fixing plate (210) via the cross arm connecting plate (220).

10. The suspension fitting string connection device (100) for reducing unbalanced tension of conductor ice coating according to any one of claims 1 to 9, characterized in that: The suspension hardware string connection assembly (500) is a hardware connection ring, used to connect the suspension hardware string of the pole tower in a buckle manner.

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