Wire clamp rotation spacer

Abstract

The utility model discloses a wire clamp rotation spacer which comprises a spacer frame, a fixed wire clamp, a rotation wire clamp and a balancing weight. The spacer frame is of a linear structure or a regular polygon structure and comprises a first layer body and a second layer body which are spaced. The end point of the side length of the spacer frame is connected with a fixed wire clamp or a rotary wire clamp. The fixed wire clamps and the rotary wire clamps are oppositely arranged relative to the spacer frame, all the fixed wire clamps are arranged on one side of the spacer frame, and all the rotary wire clamps are arranged on the other side of the spacer frame; the balancing weight is clamped between the first layer body and the second layer body and is arranged on one side, connected with the fixed wire clamp, of the spacer frame; and the balancing weight is fixed with the spacer frame through a fastener. According to the utility model, the problem that the spacer loses the anti-galloping effect due to the deflection of a split conductor towards one side of the rotary wire clamp when the wire clamp rotary spacer is used is solved. The operation reliability of a power transmission line is improved, the deflection phenomenon of the spacer is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spacer bars, in particular to a wire clamp rotary spacer bar. Background Art

[0002] Galloping is a low-frequency, large-amplitude self-excited vibration generated by wind when the conductor (ground) wire of a transmission line is unevenly covered with ice. Galloping is one of the main factors threatening the safe operation of transmission lines. In mild cases, it can cause line flashover and tripping. In severe cases, it can cause damage to hardware and insulators, breakage of conductors (ground) wires, loosening of tower bolts, and even collapse of towers, which can seriously endanger the safe operation of the power system.

[0003] The wire clamp rotary spacer (suitable for split conductors) is a new anti-dancing device developed in my country in recent years. Its characteristics are that one-half of the wire clamp of the wire clamp rotary spacer can rotate freely (or within a certain angle range) (called a rotary wire clamp), and one-half of the wire clamp is the same as the ordinary spacer clamp (called a fixed wire clamp) and cannot rotate freely. The wire clamp rotary spacer has the dual functions of a spacer and an anti-dancing device, and will not increase the concentrated load on the transmission line, and has basically no effect on the operating stress of the line. The wire clamp rotary spacer is slightly more expensive than the ordinary spacer. The wire clamp rotary spacer has been widely used in the anti-dancing control projects of overhead transmission lines in my country.

[0004] The swivel clamp of the wire clamp swivel spacer has an additional rotating mechanism compared to the fixed wire clamp, including a supporting part and a clamping part for holding the wire. Therefore, the weight of the swivel clamp is much heavier than that of the fixed wire clamp. This will cause the split wire to deflect to the side of the swivel clamp of the swivel spacer when the wire clamp swivel spacer is installed on the overhead transmission line, so that the swivel spacer may lose its anti-dancing function, which will bring hidden dangers to the safe operation of the overhead transmission line.

[0005] Therefore, a spacer bar is needed that can reduce the deflection of the spacer bar toward one side of the rotary clamp. Utility Model Content

[0006] The utility model aims to provide a spacer bar which can reduce or eliminate the phenomenon that the spacer bar deflects toward one side of a rotary wire clamp.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A wire clamp rotary spacer bar, comprising a spacer bar frame, a fixed wire clamp, a rotary wire clamp, and a counterweight;

[0009] The spacer bar frame is a straight line structure or a regular polygon structure, and the spacer bar frame includes a first layer body and a second layer body arranged at intervals;

[0010] The end points of the side lengths of the spacer bar frame are connected with fixed wire clamps or swivel wire clamps;

[0011] The fixed wire clamps and the swivel wire clamps are arranged relative to the spacer bar frame, all the fixed wire clamps are arranged on one side of the spacer bar frame, and all the swivel wire clamps are arranged on the other side of the spacer bar frame;

[0012] The counterweight block is sandwiched between the first layer body and the second layer body, and is arranged on one side of the spacer bar frame connected to the fixed wire clamp;

[0013] The counterweight block is fixedly connected to the spacer bar frame via a fastener so that one side and the other side of the spacer bar frame are balanced.

[0014] Furthermore, the bottom surface of the first layer body and the top surface of the counterweight block are connected via matching positioning grooves and positioning protrusions; the top surface of the second layer body and the bottom surface of the counterweight block are connected via matching positioning grooves and positioning protrusions.

[0015] Furthermore, the cross-sectional shapes of the first layer body and the second layer body are respectively H-shaped, and the cross-sectional shapes of the counterweight block are matched with the first layer body and the second layer body respectively so that the bottom surface of the first layer body is embedded in the top surface of the counterweight block, and the top surface of the second layer body is embedded in the bottom surface of the counterweight block.

[0016] Furthermore, the fasteners are matching bolts and nuts, and the bolts pass through the first layer body, the counterweight block, and the second layer body.

[0017] Furthermore, the spacer bar frame is a linear structure, and the distance between the counterweight block and the fixed wire clamp is smaller than the distance between the counterweight block and the rotary wire clamp.

[0018] Furthermore, the spacer bar frame is a regular polygonal structure, and the counterweight block is arranged on a symmetry axis on one side of the spacer bar frame.

[0019] Furthermore, the spacer bar frame is a regular polygonal structure, and the two counterweights are symmetrically arranged on one side of the spacer bar frame.

[0020] In the above technical solution, the utility model has the following beneficial effects:

[0021] The utility model solves the problem that when the wire clamp rotary spacer is installed on the overhead transmission line, the split conductor will deflect to the side of the rotary wire clamp, which may cause the wire clamp rotary spacer to lose its anti-dancing function, thus bringing hidden dangers to the safe operation of the overhead transmission line. The reliability of the overall operation of the transmission line is improved, the product has good anti-corona performance, reduces power loss, effectively reduces maintenance costs, and is safer and more environmentally friendly as a whole. It can also be applied to a variety of wire clamp rotary spacers such as two-split, four-split, six-split, eight-split and ten-split. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the top view of the structure of the rotary spacer bar of the wire clamp disclosed in the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at AA;

[0025] Figure 3 It is a schematic diagram of the top view of the counterweight block disclosed in the utility model;

[0026] Figure 4 It is a schematic diagram of the top view of the spacer rod frame of the linear structure disclosed in the utility model;

[0027] Figure 5 This is a schematic diagram of the top view structure of the regular hexagonal spacer rod frame disclosed in the utility model;.

[0028] Reference numerals:

[0029] The first layer body 1, the second layer body 2, the fixed wire clamp 3, the rotating wire clamp 4, and the counterweight block 5. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] It should be noted that the terms "above", "one end", "upper", etc. used in this article indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for the purpose of illustration, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1-5 The wire clamp rotary spacer shown includes a spacer bar frame, a fixed wire clamp 3, a rotary wire clamp 4, and a counterweight block 5.

[0033] The spacer rod frame is a straight line structure or a regular polygon structure, and the spacer rod frame includes a first layer body 1 and a second layer body 2 arranged at intervals. The first layer body 1 and the second layer body 2 provide a mounting base for mounting the counterweight. For example, the Chinese utility model patent with application number CN202222176999.8 and name "Rotary Damping Spacer Rod".

[0034] The end points of the side length of the spacer bar frame are connected with a fixed wire clamp 3 or a rotary wire clamp 4. When the spacer bar frame is a linear structure, the fixed wire clamp 3 and the rotary wire clamp 4 are respectively arranged at the two end points of the linear structure, such as the Chinese utility model patent "A wire clamp rotary damping rotary spacer" with application number CN201420845566.X. When the spacer bar frame is a regular polygon structure, the fixed wire clamp 3 and the rotary wire clamp 4 are respectively arranged at the top corners, such as the Chinese utility model patent "A six-split wire clamp rotary damping spacer" with application number CN200820233784.2.

[0035] The fixed wire clamps 3 and the swivel wire clamps 4 are arranged relative to the spacer frame, that is, the fixed wire clamps 3 and the swivel wire clamps 4 are arranged symmetrically in pairs. All the fixed wire clamps 3 are arranged on one side of the spacer frame, and all the swivel wire clamps 4 are arranged on the other side of the spacer frame; these two sides are arranged symmetrically about the spacer frame.

[0036] The counterweight 5 is strip-shaped, sandwiched between the first layer body 1 and the second layer body 2, and arranged on one side of the spacer frame connected to the fixing wire clamp 3; the counterweight 5 is fixedly connected to the spacer frame by fasteners. The number of fasteners is selected as needed, and can be one or more.

[0037] Preferably, the bottom surface of the first layer body 1 and the top surface of the counterweight 5 are connected by matching positioning grooves and positioning protrusions, that is, the bottom surface of the first layer body 1 is provided with positioning protrusions, and the top surface of the counterweight 5 is provided with positioning grooves, or the bottom surface of the first layer body 1 is provided with positioning grooves, and the top surface of the counterweight 5 is provided with positioning protrusions; similarly, the top surface of the second layer body 2 and the bottom surface of the counterweight 5 are connected by matching positioning grooves and positioning protrusions. The number of positioning grooves or positioning protrusions is not limited, which plays a role in positioning, allowing the counterweight 5 to be quickly and firmly installed on the spacer frame.

[0038] As a preferred embodiment of the positioning groove and the positioning protrusion, the cross-sectional shapes of the first layer body 1 and the second layer body 2 are respectively H-shaped, that is, the first layer body 1 and the second layer body 2 are horizontally placed in an I-shaped shape. In this way, the first layer body 1 and the second layer body 2 both have two positioning protrusions.

[0039] The cross-sectional shapes of the counterweight block 5 match the first layer body 1 and the second layer body 2 respectively so that the bottom surface of the first layer body 1 is embedded in the top surface of the counterweight block 5, and the top surface of the second layer body 2 is embedded in the bottom surface of the counterweight block 5. In this way, the top surface or the bottom surface of the counterweight block 5 has two positioning grooves.

[0040] Preferably, the fasteners are matching bolts and nuts, and the bolts pass through the first layer body 1, the counterweight block 5, and the second layer body 2.

[0041] like Figure 4 As shown, the spacer bar frame is a linear structure, and the distance between the counterweight block 5 and the fixed wire clamp 3 is smaller than the distance between the counterweight block 5 and the rotary wire clamp 4. In this way, the counterweight block 5 is arranged on the side where the spacer bar frame is connected to the fixed wire clamp 3, that is, the counterweight block 5 is closer to the fixed wire clamp 3 on the spacer bar frame.

[0042] like Figure 1 As shown, the spacer bar frame is a regular polygon structure, and the counterweight 5 is arranged on the symmetry axis of one side of the spacer bar frame. The symmetry center line DE of the spacer bar frame as a whole is used to divide the two sides, one side is installed with a fixed wire clamp, and the other side is installed with a swivel wire clamp. The counterweight 5 is installed in the middle position of the spacer bar frame on the side of the fixed wire clamp to keep the spacer bar symmetrically arranged in the length direction of the symmetry center line DE. That is, the symmetry axis BC of one side of the spacer bar frame is perpendicular to the symmetry center line DE of the spacer bar frame as a whole.

[0043] Preferably, the spacer bar frame is a regular polygonal structure, and the two counterweights 5 are symmetrically arranged on one side of the spacer bar frame.

[0044] like Figure 5As shown, the spacer bar frame is a regular hexagonal structure, and two counterweights 5 are symmetrically arranged on one side of the spacer bar frame, and the symmetry axes of the two counterweights coincide with the symmetry axis BC of one side of the spacer bar frame. In addition, a counterweight 5 can also be placed, and the counterweight 5 is placed at the vertex angle on the symmetry axis BC of the spacer bar frame. The counterweight 5 is V-shaped, and the angle of the V is consistent with the angle at the vertex angle of the spacer bar frame.

[0045] Take the spacer bar used for four splits as an example. Figure 1-3 The counterweight block of a wire clamp rotary spacer shown is installed on the spacer frame on the side where the fixed wire clamp is located. The weight of the counterweight block is calculated based on the torque difference generated by the wire clamp rotary wire clamp and the fixed wire clamp on the center of the spacer (the center of the split conductor), so that the weight on one side and the other side of the spacer frame is balanced. After the counterweight block is installed on the wire clamp rotary spacer, the wire clamp rotary spacer will not cause the split conductor to deflect to the side of the rotary wire clamp when it is installed on the overhead transmission line, ensuring that the wire clamp rotary spacer and the split conductor are in a horizontal position.

[0046] The spacer bar frame adopts a double frame structure, the counterweight is installed in the gap in the middle of the double frame structure, and two sets of fastening bolts pass through the long holes on the spacer bar frame and the round holes on the counterweight to fasten them together.

[0047] The counterweight block is in the shape of a long strip and is provided with two round holes. The two sides of the counterweight block are respectively provided with a positioning boss and two positioning grooves to match the shape of the two-layer H-shaped spacer bar frame. The cross section of each layer of the spacer bar frame is a horizontal I-shaped cross section. The positioning boss on one side of the counterweight block is installed in the positioning groove of the cross section of one layer of the spacer bar frame, and the two positioning grooves of the counterweight block are installed in the positioning convex parts on both sides of the I-shaped cross section of the spacer bar frame; the positioning boss on the other side of the counterweight block is installed in the positioning groove of the other layer of the spacer bar frame, and the two positioning grooves on the other side of the counterweight block are installed in the positioning convex parts on both sides of the other layer of the spacer bar frame to ensure the installation position of the counterweight block on the line clamp rotary spacer bar.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wire clamp rotary spacer, characterized in that: It comprises a spacer rod frame, a fixed wire clamp (3), a swivel wire clamp (4), and a counterweight (5); The spacer bar frame is a straight line structure or a regular polygonal structure, and comprises a first layer body (1) and a second layer body (2) arranged at intervals; The end points of the side lengths of the spacer bar frame are connected with fixed wire clamps (3) or swivel wire clamps (4); The fixed wire clamps (3) and the swivel wire clamps (4) are arranged relative to the spacer bar frame, all the fixed wire clamps (3) are arranged on one side of the spacer bar frame, and all the swivel wire clamps (4) are arranged on the other side of the spacer bar frame; The counterweight block (5) is sandwiched between the first layer body (1) and the second layer body (2), and is arranged on one side of the spacer bar frame connected to the fixing wire clamp (3); The counterweight block (5) is fixedly connected to the spacer bar frame via fasteners so that one side and the other side of the spacer bar frame are balanced.

2. A wire clamp rotary spacer according to claim 1, characterized in that: The bottom surface of the first layer body (1) and the top surface of the counterweight block (5) are connected via matching positioning grooves and positioning protrusions; the top surface of the second layer body (2) and the bottom surface of the counterweight block (5) are connected via matching positioning grooves and positioning protrusions.

3. A wire clamp rotary spacer according to claim 2, characterized in that: The cross-sectional shapes of the first layer body (1) and the second layer body (2) are respectively H-shaped, and the cross-sectional shapes of the counterweight block (5) are respectively matched with the first layer body (1) and the second layer body (2) so that the bottom surface of the first layer body (1) is embedded in the top surface of the counterweight block (5), and the top surface of the second layer body (2) is embedded in the bottom surface of the counterweight block (5).

4. A wire clamp rotary spacer according to claim 1, characterized in that: The fasteners are matching bolts and nuts, and the bolts are passed through the first layer body (1), the counterweight block (5), and the second layer body (2).

5. The wire clamp rotary spacer according to claim 1, characterized in that: The spacer bar frame is a linear structure, and the distance between the counterweight block (5) and the fixed wire clamp (3) is smaller than the distance between the counterweight block (5) and the rotary wire clamp (4).

6. A wire clamp rotary spacer according to claim 1, characterized in that: The spacer bar frame is a regular polygonal structure, and the counterweight block (5) is arranged on a symmetry axis on one side of the spacer bar frame.

7. The wire clamp rotary spacer according to claim 1, characterized in that: The spacer bar frame is a regular polygonal structure, and the two counterweight blocks (5) are symmetrically arranged on one side of the spacer bar frame.

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