Fixed protection devices for overhead line pull-up cables

Abstract

A fixed protection device is provided for application to the overhead cable of an overhead line. [Solution] The fixing protection device includes a pole tower 100 and a cable fixing jig 200. The pole tower includes support legs 101, keel brackets 102, and beam plates 103. The keel brackets are attached to the top of the support legs, and two sets of beam plates are connected to the center of the keel brackets. The cable fixing jig includes a clamp assembly and stainless steel bolts, and the stainless steel bolts are connected to both sides of the clamp assembly. By using it as a retrofit cable fixing protection device, it is possible to change the cable fixing method of existing lifting pole towers, and by attaching the cable fixing jig directly to the cable body above the cable tube, the lifting cable can be fixed to the beam plates of the lifting pole tower.

Description

[Technical Field]

[0001] The present invention relates to the field of cable protection technology, and more particularly to a fixed protection device applied to the uplink cable of an overhead line. [Background technology]

[0002] Due to the geographical location and equipment installation method of mountain wind power plants, the 35kV collector lines are often overhead lines. The wind power generation units output a voltage of 690V, which is boosted to 35kV through a box-type transformer. The high-voltage side of the box-type transformer is connected to the 35kV overhead line via an underground cable transmission system, with the cable pulled up through a truss pole tower.

[0003] Currently, the main cable fixing method for pulling up cables in box-type transformers is to attach a holder to the cable tube. However, because the holder is attached to the cable tube, the cable and cable tube are not connected, and the holder does not apply any tightening force to the cable. The cable is in a slack state due to its own weight, and because the mass of the cable itself is heavy, the tensile force caused by the slack of the cable for a long time acts on the cable base. This causes a gap to form due to the separation of the cable termination connector structure, leading to discharge and heat generation, which greatly affects the safety and stable operation of the line and makes the cable termination connector prone to breakage. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in consideration of the above-mentioned conventional problems, and aims to provide a fixed protection device that can be applied to the pull-up cable of an overhead line, which can ensure the safety and stable operation of the line. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides a fixed protection device applied to a pull cable of an overhead line, Includes pole tower and cable fixing jig, The pole tower includes a support leg, a keel bracket, and a beam plate, the keel bracket is attached to the upper part of the support leg, and two sets of beam plates are connected to the center part of the keel bracket; The cable fixing jig includes a clamp assembly and a stainless steel bolt, and the stainless steel bolt is connected to both sides of the clamp assembly.

[0006] Based on the above technical features, a retrofit cable fixing protection device can be designed to change the cable fixing method of existing haulage pole towers. By attaching the cable fixing jig directly to the cable body above the cable tube, the haulage cable can be fixed to the beam plate of the haulage pole tower. The haulage cable directly bears the force of the cable fixing jig, gasket, and beam plate fixing parts, preventing the cable terminal connector from being damaged or cut due to the cable's own weight over a long period of time and ensuring the safe and stable operation of the line.

[0007] In one preferred embodiment of the fixed protection device applied to the overhead cable of an overhead line according to the present invention, the stainless steel bolt includes an adjusting nut, a gasket is provided on the side of the adjusting nut closer to the clamp assembly, a clamp spring is connected to the side of the gasket farther from the adjusting nut, and an elastic sheet is attached between the gasket and the stainless steel bolt.

[0008] Based on the above technical features, the corrosion resistance of the cable fixing jig is improved by applying zinc plating to the material surfaces of the stainless steel bolts, adjusting nuts, gaskets, clamp springs and elastic sheets.

[0009] In one preferred embodiment of the fixed protection device for the overhead line pull-up cable of the present invention, the clamp assembly includes a profiled block, with spring grooves on both sides of the profiled block, and an arc-shaped groove further provided at the bottom of the spring groove away from the profiled block.

[0010] Based on the above technical features, the profiled block is supported by a non-magnetic material and has an anti-slip texture engraved on its surface, which improves the wear resistance of the cable fixing jig.

[0011] In one preferred embodiment of the fixed protection device applied to the overhead line pull-up cable of the present invention, a first insulating layer is provided on the outside of the spring groove, and a connecting through hole is provided in the center of the spring groove.

[0012] Based on the above technical features, the first insulating layer and the connecting through-hole structure allow the stainless steel bolt to easily penetrate both sides of the two sets of deformed blocks and connect them. Clamp springs can be accommodated on both sides of the deformed blocks, and wear on the clamp spring surfaces caused by the deformed blocks can be reduced.

[0013] In a preferred embodiment of the fixed protection device applied to the overhead cable of the present invention, the connecting through-hole is adapted to the structure of the stainless steel bolt.

[0014] Based on the above technical features, by passing a stainless steel bolt through the connecting through-hole and connecting them, it becomes easy to elastically connect two sets of irregularly shaped blocks together.

[0015] In a preferred embodiment of the fixed protection device for the overhead cable of the present invention, the spring groove is adapted to the structure of the clamp spring.

[0016] Based on the above technical features, by inserting the clamp spring into the spring groove, the clamp spring can be stored on both sides of the profiled block, and the wear caused by the profiled block on the surface of the clamp spring can also be reduced.

[0017] In one preferred embodiment of the fixed protection device applied to the overhead line pull-up cable of the present invention, the arc-shaped groove includes an arc plate, a second insulating layer is connected to the inside of the arc plate, and multiple sets of elastic parts are attached to the outside of the arc plate.

[0018] Based on the above technical features, the arc plate and second insulating layer structure can clamp and fix the cable while protecting the outer surface of the cable from wear, effectively preventing cable wear and leakage. Combined with the elastic part structure, the clamping force of the arc plate on the cable can be effectively increased, effectively preventing the cable from loosening inside the cable fixing jig.

[0019] In a preferred embodiment of the fixed protection device applied to the overhead cable of the present invention, the second insulating layer and the first insulating layer are made of the same material, that is, insulating rubber mat.

[0020] Based on the above technical features, the structure of the second insulating layer and the first insulating layer can improve the wear prevention ability of the cable clamping and fixing by the cable fixing jig, and can effectively avoid leakage current caused by cable wear.

[0021] In a preferred embodiment of the fixed protection device for the overhead cable of the present invention, the elastic element includes an adjustment groove, a limiting post is connected inside the adjustment groove, and a buffer spring is also connected between the limiting post and the adjustment groove.

[0022] Based on the above technical features, the adjusting groove, limiting post and buffer spring structure can effectively increase the clamping force of the arc plate on the cable, and effectively prevent the cable from loosening inside the cable fixing jig.

[0023] In a preferred embodiment of the fixed protection device applied to the overhead line pull-up cable of the present invention, the gasket includes a fixing through-hole, a connecting plate is attached to the side of the gasket far from the fixing through-hole, and an arc-shaped connecting groove is provided through the connecting plate on the side far from the fixing through-hole.

[0024] Based on the above technical features, the structure of the fixing through-holes allows gaskets to be easily fastened and fixed to both ends of the stainless steel bolts, and by matching with the connecting plate and the arc-shaped connecting groove structure, the entire cable fixing jig can be easily fixed to the beam plate of the lifting pole tower with bolts. [Effects of the Invention]

[0025] The beneficial effect of this invention is that by designing a retrofit cable fixing protection device, it can change the cable fixing method of existing haulage pole towers. By attaching the cable fixing jig directly to the cable body above the cable tube, the haulage cable can be fixed to the beam plate of the haulage pole tower. The haulage cable directly bears the force of the cable fixing jig, gasket, and beam plate fixing components, preventing the cable terminal connector from being damaged or cut due to the cable's own weight over time and ensuring the safe and stable operation of the line. [Brief explanation of the drawings]

[0026] In order to clarify the technical concept of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. However, the drawings in the following description are only a part of the embodiments of the present invention, and those skilled in the art can derive other drawings from these drawings without exerting creative effort.

[0027] [Figure 1] 1 is an overall configuration diagram of a fixed protection device applied to a pull-up cable of an overhead line in a first embodiment. [Figure 2] FIG. 10 is a schematic diagram illustrating the configuration of a cable fixing jig of a fixed protection device applied to a pull-up cable of an overhead line according to a second embodiment. [Figure 3] 10 is a schematic diagram of a spring groove structure of a fixed protection device applied to a pull-up cable of an overhead line in Example 3. FIG. [Figure 4] 10 is a schematic diagram of the structure of an elastic component of a fixed protection device applied to a pull-up cable of an overhead line in Example 3. FIG. [Figure 5]10 is a schematic diagram of a gasket structure of a fixed protection device applied to a pull-up cable of an overhead line in Example 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] In order to make the above objects, features and advantages of the present invention more clearly comprehensible, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention; however, the present invention may be practiced in ways other than those described herein, and those skilled in the art will be able to make similar advancements without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0030] As used herein, the term "one embodiment" or "embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one embodiment of the present invention. The appearances of "in one embodiment" in different places throughout this specification do not all refer to the same embodiment, nor do they refer to an embodiment that is mutually exclusive with other embodiments, either singly or in the alternative. Safe and stable operation of railway tracks [Example]

[0031] Example 1 Referring to FIGS. 1 and 2, a first embodiment of the present invention provides a fixed protection device for a pull-up cable of an overhead line, The pole tower 100 and the cable fixing jig 200 are included. The pole tower 100 includes a support leg 101, a keel bracket 102, and a beam plate 103. The keel bracket 102 is attached to the top of the support leg 101, and two sets of beam plates 103 are connected to the center of the keel bracket 102. The cable fixing jig 200 includes a clamp assembly 201 and a stainless steel bolt 202, with the stainless steel bolts 202 connected to both sides of the clamp assembly 201. By designing a retrofit cable fixing protection device, it is possible to change the cable fixing method of the existing haulage pole tower 100. By attaching the cable fixing jig 200 directly to the cable body above the cable tube, the haulage cable can be fixed to the beam plate 103 of the haulage pole tower 100. The haulage cable directly receives force from the cable fixing jig 200, the gasket 202b, and the fixed components of the beam plate 103, which prevents the cable terminal connector from being damaged or cut due to the cable's own weight over a long period of time and ensures safe and stable operation of the track.

[0032] The stainless steel bolt 202 includes an adjusting nut 202a, with a gasket 202b provided on the side of the adjusting nut 202a closer to the clamp assembly 201, and a clamp spring 202c connected to the side of the gasket 202b farther from the adjusting nut 202a, with an elastic sheet 202d attached between the gasket 202b and the stainless steel bolt 202. The corrosion resistance of the cable fixing jig 200 is improved by galvanizing the surfaces of the material of the stainless steel bolt 202, adjusting nut 202a, gasket 202b, clamp spring 202c, and elastic sheet 202d. [Example]

[0033] Example 2 2 to 4, the second embodiment of the present invention differs from the first embodiment in that the clamping assembly 201 includes a shaped block 201a, which has spring grooves 201b on both sides, and an arc-shaped groove 201c at the bottom of the spring groove 201b, away from the shaped block 201a. The shaped block 201a is supported by a non-magnetically permeable material, and its surface is textured to prevent slipping, thereby improving the wear resistance of the cable fixture 200.

[0034] A first insulating layer 201b-1 is provided on the outside of the spring groove 201b, and a connecting through-hole 201b-2 is provided in the center of the spring groove 201b. The structure of the first insulating layer 201b-1 and the connecting through-hole 201b-2 makes it easy to connect the stainless steel bolt 202 by passing it through both sides of the two sets of deformed blocks 201a. It also makes it possible to store the clamp spring 202c on both sides of the deformed block 201a, and reduces the wear caused by the deformed block 201a on the surface of the clamp spring 202c.

[0035] The connecting through-holes 201b-2 are adapted to the structure of the stainless steel bolts 202. By connecting the stainless steel bolts 202 through the connecting through-holes 201b-2, it becomes easy to elastically connect the two sets of irregularly shaped blocks 201a together.

[0036] The spring groove 201b is adapted to the structure of the clamp spring 202c. By inserting the clamp spring 202c into the spring groove 201b, the clamp spring 202c can be accommodated on both sides of the profiled block 201a, which also reduces the wear that the profiled block 201a causes on the surface of the clamp spring 202c. [Example]

[0037] Example 3 4, the third embodiment of the present invention differs from the previous two embodiments in that the arc-shaped groove 201c includes an arc plate 201c-1, a second insulating layer 201c-2 is connected to the inside of the arc plate 201c-1, and multiple sets of elastic members 201c-3 are attached to the outside of the arc plate 201c-1. The structure of the arc plate 201c-1 and the second insulating layer 201c-2 not only clamps and fixes the cable, but also protects the outer surface of the cable from wear, effectively preventing cable wear and leakage. Combined with the structure of the elastic members 201c-3, the clamping force of the arc plate 201c-1 on the cable can be effectively increased, effectively preventing the cable from loosening inside the cable fixture 200.

[0038] The second insulating layer 201c-2 and the first insulating layer 201b-1 are made of the same material, an insulating rubber mat. The structure of the second insulating layer 201c-2 and the first insulating layer 201b-1 improves the abrasion resistance of the cable clamped and fixed by the cable fixture 200, and also effectively prevents leakage of electricity due to cable abrasion.

[0039] The elastic element 201c-3 includes an adjustment groove 201c-3a, a limiting post 201c-3b connected inside the adjustment groove 201c-3a, and a buffer spring 201c-3c connected between the limiting post 201c-3b and the adjustment groove 201c-3a. By adjusting the structures of the adjustment groove 201c-3a, the limiting post 201c-3b, and the buffer spring 201c-3c, the clamping force of the arc plate 201c-1 on the cable can be effectively increased, and the cable can be effectively prevented from loosening inside the cable fixture 200.

[0040] Gasket 202b includes a fixing through-hole 202b-1, with connecting plate 202b-2 attached on the side of gasket 202b far from fixing through-hole 202b-1, and arc-shaped connecting groove 202b-3 extending through connecting plate 202b-2 on the side far from fixing through-hole 202b-1. The structure of fixing through-hole 202b-1 allows gasket 202b to be easily fastened and fixed to both ends of stainless steel bolt 202, and in accordance with the structure of connecting plate 202b-2 and arc-shaped connecting groove 202b-3, the entire cable fixing jig 200 can be easily fixed to beam plate 103 of pole tower 100 with bolts.

[0041] It should be noted that the above examples are intended to illustrate the technical idea of ​​the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that the invention falls within the scope of the claims of the present invention without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0042] 100 Pole Tower 101 Support leg 102 Keel bracket 103 Beam Plate 200 Cable Fixing Jig 201 Clamp Assembly 201a Irregular Shape Block 201b Spring groove 201b-1 First insulating layer 201b-2 Connection through hole 201c Arc-shaped groove 201c-1 Arc plate 201c-2 Second insulating layer 201c-3 Elastic parts 201c-3a adjustment groove 201c-3b Restricted Post 201c-3c Buffer spring 202 Stainless steel bolt 202a Adjustment nut 202b Gasket 202b-1 Fixed through hole 202b-2 Connecting plate 202b-3 Arc-shaped connecting groove 202c Clamp spring 202d Elastic sheet

Claims

1. A fixed protection device applied to a pull-up cable of an overhead line, The pole tower (100) and the cable fixing jig (200) are included. The pole tower (100) includes a support leg (101), a keel bracket (102) and a beam plate (103), the keel bracket (102) is attached to the upper part of the support leg (101), and two sets of beam plates (103) are connected to the center of the keel bracket (102); The cable fixing jig (200) includes a clamp assembly (201) and a stainless steel bolt (202), and the stainless steel bolt (202) is connected to both sides of the clamp assembly (201).

2. 2. A fixed protection device for use in a pull-up cable of an overhead line according to claim 1, characterized in that the stainless steel bolt (202) includes an adjusting nut (202a), a gasket (202b) is provided on the side of the adjusting nut (202a) closer to the clamp assembly (201), a clamp spring (202c) is connected to the side of the gasket (202b) farther from the adjusting nut (202a), and an elastic sheet (202d) is attached between the gasket (202b) and the stainless steel bolt (202).

3. The clamp assembly (201) includes a profiled block (201a), with spring grooves (201b) on both sides of the profiled block (201a), and an arc-shaped groove (201c) is further provided at the bottom of the spring groove (201b) away from the profiled block (201a).

4. A fixed protection device to be applied to a pull-up cable of an overhead line as described in claim 3, characterized in that a first insulating layer (201b-1) is provided on the outside of the spring groove (201b), and a connecting through hole (201b-2) is provided through the center of the spring groove (201b).

5. The fixed protection device applied to the overhead cable of claim 4, characterized in that the connecting through-hole (201b-2) is adapted to the structure of the stainless steel bolt (202).

6. 6. A fixed protection device for use on a pull-up cable of an overhead line according to claim 5, characterized in that the spring groove (201b) is adapted to the structure of the clamp spring (202c).

7. The fixed protection device applied to the overhead cable of an overhead line as described in claim 3, characterized in that the arc-shaped groove (201c) includes an arc plate (201c-1), a second insulating layer (201c-2) is connected to the inside of the arc plate (201c-1), and multiple sets of elastic parts (201c-3) are attached to the outside of the arc plate (201c-1).

8. The fixed protection device applied to the overhead line pull-up cable as described in claim 7, characterized in that the second insulating layer (201c-2) and the first insulating layer (201b-1) are made of the same material, both of which are made of insulating rubber mats.

9. The fixed protection device applied to the overhead cable of an overhead line as described in claim 7, characterized in that the elastic element (201c-3) includes an adjustment groove (201c-3a), a limiting post (201c-3b) is connected inside the adjustment groove (201c-3a), and a buffer spring (201c-3c) is also connected between the limiting post (201c-3b) and the adjustment groove (201c-3a).

10. The fixed protection device applied to the overhead line pull-up cable as described in claim 2, characterized in that the gasket (202b) includes a fixing through hole (202b-1), a connecting plate (202b-2) is attached to the side of the gasket (202b) far from the fixing through hole (202b-1), and an arc-shaped connecting groove (202b-3) is provided through the connecting plate (202b-2) on the side far from the fixing through hole (202b-1).

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