Additional overhead wire suspension device and overhead wire support device

Abstract

The present invention relates to the technical field of railway electrification contact network, and provides a contact network additional wire suspension device and a contact network support device, wherein the contact network additional wire suspension device comprises: an insulator (10), a long suspension ring (20) and a wire clamp device (30) for clamping the additional wire, wherein the insulator (10) is in the shape of a rod, and one end of the insulator (10) has a mounting surface (11), wherein the mounting surface (11) is perpendicular to the axial direction of the insulator (10), and the other end of the insulator (10) is connected to the long suspension ring (20), and the bottom end of the long suspension ring (20) is connected to the wire clamp device (30). The rod-shaped insulator not only plays the role of insulation isolation, but also plays the role of support, so that the insulator can be installed on the column of the contact network through the mounting surface, without the need to set an insulator string, thereby avoiding the swing of the additional wire caused by the insulator string, and relieving the fatigue of the additional wire and the wear of the connecting parts.

Description

Technical Field

[0001] The invention relates to the technical field of railway electrification contact network, and in particular to a contact network additional conductor suspension device and a contact network support device. Background Art

[0002] In order to improve the capacity of railway transportation, comprehensively utilize power resources, reduce environmental pollution, and achieve the goal of low investment and good results, my country has accelerated the construction of electrified railways, especially high-speed railways. The contact network positive feeder, power supply line, and reinforcement line are important components of the electrified railway traction power supply system. The traction substations, switch stations, and substations distributed along the line all have several kilometers of power supply lines. Parallel lines and reinforcement lines are installed on lines with long power supply arms, large slopes, and many curves; AT power supply sections (auto transformer supply system of electric traction) are all equipped with positive feeders. The traditional suspension method of positive feeder, power supply line, and reinforcement line is that the conductor is rigidly fixed with the wire clamp device, and the wire clamp device is connected to the insulator string and then suspended on the steel shoulder frame. The anchor is hard anchored (without compensation anchor).

[0003] At present, the positive feeder, power supply line and reinforcement line are mainly connected to the steel shoulder frame through the insulator string to ensure that there is no flashover between the additional conductor and the pillar of the contact network. However, as the required insulation distance increases, the number of insulation sheets increases, and the length of the insulator string or insulator becomes longer, the safety distance to the cross-line buildings and other additional conductors will inevitably increase, and the wire clamp device is prone to shaking, which has a poor limiting effect on the additional conductor and causes large swings of the additional conductor; under the action of strong winds, the current contact network suspension device swings greatly in the vertical line direction, which can easily lead to insufficient insulation distance between the additional conductors and short circuit tripping. At the same time, the implementation cost of this additional line suspension device is relatively high. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the hanging of additional wires occupies a large installation space, has a high implementation cost, and the distance between the additional wires is unstable.

[0005] To achieve the above object, the present invention provides a contact network additional conductor suspension device, comprising: an insulator, a long suspension ring and a wire clamp device for clamping the additional conductor.

[0006] The insulator is in the shape of a rod, and one end of the insulator has a mounting surface, the mounting surface is perpendicular to the axial direction of the insulator, and the other end of the insulator is connected to the long suspension ring.

[0007] The bottom end of the long lifting ring is connected to the wire clamp device.

[0008] Optionally, the insulator comprises: a rod-shaped insulator body, a first hardware for connecting the long suspension ring, and a second hardware for setting the mounting surface.

[0009] The first hardware fitting and the second hardware fitting are respectively fixed at two ends of the rod-shaped insulator body.

[0010] Optionally, the material forming the rod-shaped insulator body includes glass fiber and epoxy resin material.

[0011] Optionally, the length of the insulator ranges from 800 mm to 900 mm.

[0012] Optionally, the long lifting ring is a metal component with a "V"-shaped structure.

[0013] Optionally, the wire clamp device includes a connecting piece and a wire clamping portion connected to the connecting piece, the connecting piece has an annular structure, the long suspension ring passes through the annular structure, and the wire clamping portion is used to clamp an additional wire.

[0014] Optionally, mounting holes are provided on the mounting surface, and at least part of the mounting holes are waist-shaped holes.

[0015] Another aspect of the present invention provides a contact network pillar device, comprising a pillar and the contact network additional wire suspension device provided by the present invention, wherein the contact network additional wire suspension device is arranged on the pillar.

[0016] Optionally, the insulator is fixedly connected to the support via the mounting surface, and the insulator is perpendicular to the support.

[0017] Optionally, two channel steels are fixedly provided on the pillar, and the mounting surface is fixed on the two channel steels.

[0018] Through the above technical solution, the insulator is set to a rod shape, so that the rod-shaped insulator not only plays the role of insulation isolation, but also plays the role of support, so that the insulator can be installed on the column of the contact network through the installation surface, without the need to set up an insulator string, avoiding the swing of the additional wire caused by the insulator string, reducing the swing of the additional wire, alleviating the fatigue of the additional wire and the wear of the connecting parts, and effectively avoiding the problem of excessive swing of the additional wire and insufficient distance from other equipment, wire insulation live body or grounding body, so that the tripping accident is greatly reduced and the operation and maintenance efficiency is improved. The electrical and mechanical safety reliability is high, and the maintenance workload is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a side schematic diagram of a contact network additional conductor suspension device in one embodiment of the present invention;

[0020] Figure 2is a side view of an insulator in one embodiment of the invention;

[0021] Figure 3 is a schematic diagram of an additional overhead wire suspension device for an overhead wire network in an embodiment of the present invention along the axial direction, wherein the wire clamp device is not fully shown;

[0022] Figure 4 is a schematic diagram of an additional overhead wire suspension device for an overhead wire network along the axial direction in another embodiment of the present invention, wherein the wire clamp device is not fully shown;

[0023] Figure 5 The invention relates to a contact network support device in one embodiment of the present invention.

[0024] Reference numerals:

[0025] 10-insulator; 11-mounting surface; 111-mounting hole; 12-rod-shaped insulator body; 13-first hardware; 14-second hardware;

[0026] 20-Long rings;

[0027] 30-cable clamp device; 31-connector; 32-cable clamping part;

[0028] 40- Pillar. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0030] See also Figure 1, which shows a side schematic diagram of the overhead contact network additional conductor suspension device in this embodiment, the overhead contact network additional conductor suspension device comprises: an insulator 10, a long suspension ring 20 and a wire clamp device 30 for clamping the additional conductor. The insulator 10 is in the shape of a rod, and one end of the insulator 10 has a mounting surface 11, the mounting surface 11 is perpendicular to the axial direction of the insulator 10, and the other end of the insulator 10 is connected to the long suspension ring 20. The bottom end of the long suspension ring 20 is connected to the wire clamp device 30. Through the above technical solution, the insulator 10 is set to be rod-shaped, so that the rod-shaped insulator 10 not only plays the role of insulation isolation, but also plays the role of support. That is to say, the insulator 10 and the long lifting ring 20 constitute a shoulder frame that can play an insulating role, so that the insulator 10 can be installed on the column of the contact network through the installation surface 11, and there is no need to set up an insulator string, thereby avoiding the swing of the additional wire caused by the insulator string, reducing the swing of the additional wire, relieving the fatigue of the additional wire and the wear of the connecting parts, and effectively avoiding the problem of excessive swing of the additional wire and insufficient distance from other equipment, wire insulation live body or grounding body, so that tripping accidents are greatly reduced and the operation and maintenance efficiency is improved. The electrical and mechanical safety reliability is high and the maintenance workload is small.

[0031] Combination Figure 2 The insulator 10 includes: a rod-shaped insulator body 12, a first hardware fitting 13 for connecting the long lifting ring 20, and a second hardware fitting 14 for setting the mounting surface 11, wherein the first hardware fitting 13 and the second hardware fitting 14 are respectively fixed at both ends of the rod-shaped insulator body 12. The first hardware fitting 13 and the second hardware fitting 14 mainly play a connecting role, wherein the structure of the first hardware fitting 13 can be set according to the shape of the long lifting ring 20, for example, it may include a circular sleeve and a rectangular parallelepiped structure connected to the circular sleeve, the circular sleeve is sleeved with the rod-shaped insulator body 12, and the rectangular parallelepiped structure is provided with a strip-shaped long hole for connecting the long lifting ring 20. The second hardware fitting 14 may include a circular sleeve and a flange, and the mounting surface 11 is located on the flange. The mounting surface 11 is provided with a mounting hole 111, which can be referred to Figure 3 In order to facilitate installation, at least part of the mounting holes 111 are waist-shaped holes. Figure 4 , Figure 4 In the embodiment, the two mounting holes 111 above are set to waist-shaped holes, and the two holes below are round holes. When installing, the two round holes below are used as the installation reference. Of course, the four mounting holes 111 can also be set to waist-shaped holes.

[0032] Among them, the materials forming the rod-shaped insulator body 12 include glass fiber and epoxy resin material. The rod-shaped insulator body 12 can be formed by processes such as glass fiber winding, pultrusion and vacuum infusion. The rod-shaped insulator body 12 formed by the above materials is light in weight, high in strength, corrosion-resistant and has good electrical insulation performance, and its production process is simple and the manufacturing cost is low. Among them, the glass fiber is boron-free, fluorine-free, and low-alkali glass fiber. It should be noted that the components of the rod-shaped insulator body 12 in this embodiment are only for illustration, and this embodiment does not limit its specific components. Those skilled in the art can appropriately change the composition of the material according to the actual situation, as long as the corresponding force strength requirements and insulation requirements are met.

[0033] Specifically, the length of the insulator 10 ranges from 800 mm to 900 mm. For example, 830 mm, 850 mm, 880 mm, etc. The length of the insulator 10 can be determined according to the number of additional conductors to be set as needed. The more additional conductors there are, the longer the length of the insulator 10 is. In a specific embodiment, the rod-shaped insulator 10 has a rated voltage of 27.5 kV, a bending failure load of 16 kN, a bending tensile load of 120 kN, a main insulation creepage distance of 1600 mm, a total length of 850 mm, a standard lightning impulse withstand voltage (peak value) of 310 kV, a power frequency dry withstand voltage (peak value) of 190 kV, and a power frequency wet withstand voltage (peak value) of 150 kV.

[0034] See also Figure 1 The long suspension ring 20 is a metal member in a "V"-shaped structure. The upper part of the long suspension ring 20 is fixed to the first hardware 13 by bolts, and the bottom is used to hang the wire clamp device 30.

[0035] Furthermore, the wire clamp device 30 includes a connecting member 31 and a wire clamping portion 32 connected to the connecting member 31, wherein the connecting member 31 has an annular structure, the long suspension ring 20 passes through the annular structure, and the wire clamping portion 32 is used to clamp the additional wire. Figure 3 In the figure, a long lifting ring 20 can be seen passing through the annular structure.

[0036] Another aspect of this embodiment provides a contact network support device, referring to Figure 5 The contact network support device includes a support 40 and a contact network additional wire suspension device provided in this embodiment, and the contact network additional wire suspension device is arranged on the support 40. Figure 5Only the upper structure of the support 40 is shown. The overhead contact network additional conductor suspension device provided in this embodiment can effectively reduce the height of the support 40 and the setting height of the insulator 10 under the premise that the additional conductor is at the minimum distance from the ground, thereby reducing the investment cost; on the other hand, under the premise that the additional conductor meets the minimum distance between the additional conductors in the specification, the installation spacing between the rod insulators 10 can be effectively reduced; the land boundary of the independent power line erection section can be reduced, and the investment can be reduced; further, the above-mentioned overhead contact network support device provided in this embodiment has a simple and compact structural design, which effectively saves installation space and reduces manual installation time, thereby reducing investment, and has high safety and reliability, and is easy to maintain and operate.

[0037] Specifically, the insulator 10 is fixedly connected to the support 40 via the mounting surface 11, and the insulator 10 is perpendicular to the support 40. Since the insulator 10 is perpendicular to the support 40, the distance between the additional wire and the support 40 is maintained to the greatest extent.

[0038] In order to facilitate the installation of the insulator 10, two channel steels may be first fixedly arranged on the support 40, and then the installation surface 11 of the insulator 10 may be fixed on the two channel steels.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A contact network additional conductor suspension device, characterized in that: include: An insulator (10), a long suspension ring (20) and a wire clamp device (30) for clamping an additional wire, The insulator (10) is in the shape of a rod, and one end of the insulator (10) has a mounting surface (11), the mounting surface (11) is perpendicular to the axial direction of the insulator (10), and the other end of the insulator (10) is connected to the long suspension ring (20). The bottom end of the long lifting ring (20) is connected to the wire clamp device (30); The insulator (10) comprises: a rod-shaped insulator body (12), a first hardware (13) for connecting the long suspension ring (20), and a second hardware (14) for setting the mounting surface (11), wherein the first hardware (13) and the second hardware (14) are respectively fixed at two ends of the rod-shaped insulator body (12); The long hanging ring (20) is connected to the first hardware (13) and is located on a side of the rod-shaped insulator body (12) away from the second hardware (14); The long suspension ring (20) is a metal component with a "V"-shaped structure. The two suspension arms of the long suspension ring (20) are arranged along the extension direction of the rod-shaped insulator body (12). The extension direction of the suspension arm in the long suspension ring (20) away from the second hardware (14) is perpendicular to the extension direction of the rod-shaped insulator body (12). In the extension direction of the rod-shaped insulator body (12), the suspension arm in the long suspension ring (20) close to the second hardware (14) extends obliquely toward the suspension arm in the long suspension ring (20) away from the second hardware (14).

2. The overhead contact network additional conductor suspension device according to claim 1, characterized in that: The material forming the rod-shaped insulator body (12) includes glass fiber and epoxy resin material.

3. The overhead contact network additional conductor suspension device according to claim 1, characterized in that: The length of the insulator (10) ranges from 800 mm to 900 mm.

4. The overhead contact network additional conductor suspension device according to claim 1, characterized in that: The wire clamp device (30) comprises a connecting piece (31) and a wire clamping portion (32) connected to the connecting piece (31); the connecting piece (31) has an annular structure, the long suspension ring (20) passes through the annular structure, and the wire clamping portion (32) is used to clamp an additional wire.

5. The overhead contact network additional conductor suspension device according to claim 1, characterized in that: The mounting surface (11) is provided with mounting holes (111), and at least part of the mounting holes (111) are waist-shaped holes.

6. A contact network support device, characterized in that: It comprises a pillar (40) and the additional conductor suspension device for a contact network as claimed in any one of claims 1 to 5, wherein the additional conductor suspension device for a contact network is arranged on the pillar (40).

7. The contact network support device according to claim 6, characterized in that: The insulator (10) is fixedly connected to the support (40) via the mounting surface (11), and the insulator (10) is perpendicular to the support (40).

8. The contact network support device according to claim 7, characterized in that: Two channel steels are fixedly arranged on the pillar (40), and the mounting surface (11) is fixed on the two channel steels.

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