A jumper device for an overhead line

Abstract

An aerial line jumper device, comprising insulators installed on both sides of a cross arm, and conductor fixing clamp plate assemblies connected to the insulators, the conductor fixing clamp plate assemblies comprising conductor fixing clamp plate pieces and jumper installation pieces; the conductor fixing clamp plate pieces are used for fixing conductors, and the jumper installation pieces are used for fixing jumpers, two jumper installation pieces are simultaneously connected with a jumper protective sleeve, and the jumper protective sleeve is sleeved outside the jumper and is used for preventing the jumper from swinging; through the jumper protective sleeve designed in a C-shaped structure, the scheme can be adapted to single or split conductors, and the problem that single conductors cannot be installed and positioned with a positioning block is solved; the scheme changes the method of installing multiple positioning blocks in the prior art, adopts a lightweight ultrahigh molecular weight polyethylene protective sleeve, and avoids increasing the weight of the jumper due to the installation of multiple positioning blocks, so that the connection strength of the end of the jumper does not need to be improved.

Description

Technical Field

[0001] This utility model belongs to the field of overhead line installation technology, and specifically relates to a jumper device for overhead lines. Background Technology

[0002] Generally, the jumpers of overhead lines are bare conductors. To prevent the jumpers from swaying, the existing technology (patent publication number CN210517723 U) is to install positioning blocks on the jumpers. The positioning blocks can ensure that the two jumpers will not interfere with each other, and one of the positioning blocks is connected to the insulator, which can prevent the jumpers from shaking.

[0003] However, the above technology has the following shortcomings: First, its application is only suitable for split conductors; single conductors are not suitable for installing positioning blocks. Second, installing multiple positioning blocks on the jumper increases its weight, requiring improved connection strength at the jumper ends. Third, in addition to adding multiple positioning blocks, the jumper structure also requires additional insulators, resulting in a relatively high manufacturing cost for a single jumper device. Since there are many jumper devices on overhead lines, this significantly increases the overall investment cost. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a jumper device for overhead lines. Unlike the existing technology which is only applicable to split conductors, this solution uses a C-shaped jumper protective sleeve design to be compatible with single or split conductors, solving the problem that single conductors cannot be fitted with positioning blocks. It also changes the existing technology of installing multiple positioning blocks by using a lightweight ultra-high molecular weight polyethylene protective sleeve, avoiding the increase in jumper weight due to the installation of multiple positioning blocks, and eliminating the need to improve the connection strength at the jumper ends.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A jumper device for an overhead line includes insulators installed on both sides of a crossarm, with conductor fixing clamp assemblies connected to the insulators. The conductor fixing clamp assembly includes conductor fixing clamps and jumper mounting components. The conductor fixing clamps are used to fix conductors, and the jumper mounting components are used to fix jumpers. Both jumper mounting components are connected to jumper protective sleeves, which are placed over the jumpers to prevent them from swinging.

[0006] Preferably, the jumper cable protective sleeve includes an arc-shaped sleeve with sleeve fixing components at both ends; the arc-shaped sleeve has a C-shaped cross-section, and the inner wall of the arc-shaped sleeve fits against the jumper cable.

[0007] Preferably, the sleeve fixing component includes a nut sleeve with a threaded through hole, and the nut sleeve is connected to the arc-shaped sleeve.

[0008] Preferably, the nut sleeve is provided with a positioning protrusion, which is adapted to fit the positioning hole, and the positioning hole is provided on the wire fixing clamp assembly.

[0009] Preferably, the jumper cable protective sleeve is made of ultra-high molecular weight polyethylene in one piece.

[0010] Preferably, the conductor fixing clamp assembly includes a base plate connected to the insulator, on which conductor fixing clamps and jumper mounting components are mounted.

[0011] Preferably, the wire fixing clamp includes a first clamp, a second clamp, and a winding post. The wire is wound half a turn around the winding post and then fixed by the first clamp and the second clamp.

[0012] Preferably, after the conductor is wound half a turn on the winding post, the double-layer conductor is fixed by the first clamp, and the second clamp is used to fix the end of the conductor separately.

[0013] Preferably, the jumper mounting component is a jumper mounting bolt, which is used to fix the jumper to the substrate.

[0014] Preferably, the substrate is provided with positioning holes, which are arranged near the jumper mounting bolts.

[0015] The present invention can achieve the following beneficial effects: 1. Unlike existing technologies that are only applicable to split wires, this solution uses a C-shaped jumper sleeve design to accommodate both single and split wires, solving the problem that single wires cannot be fitted with positioning clips.

[0016] 2. Instead of installing multiple positioning blocks as in existing technology, a lightweight ultra-high molecular weight polyethylene protective sleeve is used, which avoids increasing the weight of the jumper wire due to the installation of multiple positioning blocks and eliminates the need to improve the connection strength at the end of the jumper wire.

[0017] 3. Unlike existing technologies, it does not require additional insulators and multiple positioning blocks. By optimizing the structural design, the number of components is reduced, the manufacturing cost of a single jumper device is lowered, and thus the overall investment cost of overhead lines is reduced.

[0018] 4. The jumper cable protective sleeve covers the outside of the jumper cable, which can effectively prevent the jumper cable from swinging, and solves the limitation of the existing technology that uses positioning blocks to prevent the jumper cable from shaking.

[0019] 5. The C-shaped protective sleeve is easy to install from the side. Compared with the existing technology of using positioning blocks for installation, it is simpler to operate and improves installation efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a diagram showing the location of the positioning holes in this utility model. Figure 3 This is a three-dimensional structural diagram of the jumper cable protective sleeve of this utility model; Figure 4 This is the main view of the jumper cable protective sleeve of this utility model; Figure 5 This is a structural diagram of the arc-shaped sleeve of this utility model; Figure 6 This is a schematic diagram illustrating the installation effect of this utility model.

[0021] In the figure: crossarm 1, insulator 2, conductor fixing clamp assembly 3, first clamp 301, second clamp 302, winding post 303, jumper protective sleeve 4, arc sleeve 401, sleeve fixing piece 402, nut sleeve 402.1, screw through hole 402.2, positioning protrusion 402.3, positioning hole 5. Detailed Implementation

[0022] Preferred solutions include Figures 1 to 6 As shown, a jumper device for an overhead line includes insulators 2 installed on both sides of a crossarm 1. A conductor fixing clamp assembly 3 is connected to the insulator 2. The conductor fixing clamp assembly 3 includes a conductor fixing clamp and a jumper mounting component. The conductor fixing clamp is used to fix the conductor, and the jumper mounting component is used to fix the jumper. Both jumper mounting components are connected to a jumper protective sleeve 4. The jumper protective sleeve 4 is fitted over the jumper to prevent the jumper from swinging.

[0023] Insulator 2 is connected to crossarm 1 via a U-shaped hanging ring, ensuring both electrical insulation and providing mechanical support. The conductor fixing clamp assembly 3 is fixed to the steel cap of insulator 2 by bolts.

[0024] Furthermore, the jumper protective sleeve 4 includes an arc-shaped sleeve 401, with sleeve fixing parts 402 at both ends of the arc-shaped sleeve 401; the arc-shaped sleeve 401 has a C-shaped cross-section, and the inner wall of the arc-shaped sleeve 401 is in contact with the jumper.

[0025] During installation, the C-shaped opening faces the sag direction of the jumper wire and is connected to the wire fixing clamp assembly 3 via the sleeve fixing component 402. The C-shaped structure design facilitates the insertion of the jumper wire into the protective sleeve from the side, avoiding the cumbersome operation of traditional positioning blocks or sleeves that need to be inserted from the end. The inner wall fits against the jumper wire to form a rigid constraint. When the jumper wire swings due to wind force, the protective sleeve converts the swing displacement into radial support force of the sleeve through the fixing components on both sides, thereby suppressing the swaying of the jumper wire.

[0026] Furthermore, the sleeve fixing component 402 includes a nut sleeve 402.1, which has a screw through hole 402.2. The nut sleeve 402.1 is connected to the arc-shaped sleeve 401. After the screw of the jumper mounting bolt passes through the screw through hole 402.2, a nut is added to fix the nut sleeve 402.1.

[0027] Furthermore, the nut sleeve 402.1 is provided with a positioning protrusion 402.3, which is adapted to fit with the positioning hole 5, which is set on the wire fixing clamp assembly 3. The positioning hole 5 adopts a countersunk hole design with a depth of 3.5mm to ensure that the positioning protrusion 402.3 does not wobble after being inserted.

[0028] Furthermore, the jumper cable protective sleeve 4 is made of ultra-high molecular weight polyethylene in one piece, with a tensile strength ≥300MPa.

[0029] Nut sleeve 402.1 is integrally molded with curved sleeve 401 using an injection molding process. The screw through hole 402.2 is used to insert an M8 bolt, connecting to the mounting hole on the wire fixing clamp assembly 3. The nut sleeve 402.1 and curved sleeve 401 are integrally molded using ultra-high molecular weight polyethylene, which helps reduce the overall weight of the component. The diameter of the screw through hole 402.2 is 1mm larger than the bolt diameter, allowing for fine-tuning of the angle during installation to accommodate different jumper wire sag configurations.

[0030] Furthermore, the conductor fixing clamp assembly 3 includes a base plate connected to the insulator 2, on which conductor fixing clamps and jumper mounting components are mounted.

[0031] Specifically, the wire fixing clamp includes a first clamp 301, a second clamp 302, and a winding post 303. The wire is wound half a turn on the winding post 303 and then fixed by the first clamp 301 and the second clamp 302.

[0032] like Figure 1 As shown, the wire is first wound around the winding post 303 for about half a turn, and then the first clamping plate 301 and the second clamping plate 302 are fixed to the base plate by M10 bolts. The winding post 303 has a diameter of 12mm and a knurled surface to increase friction.

[0033] Furthermore, after the conductor is wound half a turn around the winding post 303, the double-layer conductor is fixed by the first clamp 301, and the second clamp 302 is used to fix the end of the conductor separately. Compared with traditional clamps, this installation structure can effectively improve tensile strength and prevent the conductor from falling off.

[0034] Furthermore, the jumper mounting component is a jumper mounting bolt, which is used to fix the jumper to the substrate.

[0035] Furthermore, the substrate is provided with positioning holes 5, which are arranged near the jumper mounting bolts. The spacing between the positioning holes 5 is consistent with the spacing between the positioning protrusions 402.3 of the sleeve fixing member 402.

[0036] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A jumper device for an overhead line, comprising insulators (2) installed on both sides of a crossarm (1), characterized in that: The insulator (2) is connected to a conductor fixing clamp assembly (3), which includes a conductor fixing clamp and a jumper mounting component. The conductor fixing clamp is used to fix the conductor, and the jumper mounting component is used to fix the jumper. Both jumper mounting components are connected to the jumper protective sleeve (4) at the same time. The jumper protective sleeve (4) is placed on the outside of the jumper to prevent the jumper from swinging.

2. The jumper device for an overhead line according to claim 1, characterized in that: The jumper protective sleeve (4) includes an arc-shaped sleeve (401), and sleeve fixing parts (402) are provided at both ends of the arc-shaped sleeve (401); the cross section of the arc-shaped sleeve (401) is a C-shaped structure, and the inner wall of the arc-shaped sleeve (401) is in contact with the jumper.

3. The jumper device for an overhead line according to claim 2, characterized in that: The sleeve fastener (402) includes a nut sleeve (402.1), which has a screw through hole (402.2) and is connected to the arc-shaped sleeve (401).

4. The jumper device for an overhead line according to claim 3, characterized in that: The nut sleeve (402.1) is provided with a positioning protrusion (402.3), which is used to match the positioning hole (5). The positioning hole (5) is provided on the wire fixing clamp assembly (3).

5. A jumper device for an overhead line according to claim 1 or 2, characterized in that: The jumper cable protective sleeve (4) is made of ultra-high molecular weight polyethylene in one piece.

6. The jumper device for an overhead line according to claim 1, characterized in that: The conductor fixing clamp assembly (3) includes a base plate connected to the insulator (2), on which the conductor fixing clamp and jumper mounting are mounted.

7. A jumper device for an overhead line according to claim 6, characterized in that: The wire fixing clamp includes a first clamp (301), a second clamp (302), and a winding post (303). The wire is wound half a turn on the winding post (303) and then fixed by the first clamp (301) and the second clamp (302).

8. A jumper device for an overhead line according to claim 7, characterized in that: After the conductor is wound half a turn on the winding post (303), the double-layer conductor is fixed by the first clamp (301), and the second clamp (302) is used to fix the end of the conductor separately.

9. A jumper device for an overhead line according to claim 6, characterized in that: The jumper mounting component is a jumper mounting bolt, which is used to fix the jumper to the board.

10. A jumper device for an overhead line according to claim 9, characterized in that: The substrate is provided with positioning holes (5), which are arranged near the jumper mounting bolts.

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