Insulation jumper device for overhead line system

Abstract

The utility model relates to an insulating jumper device for a contact network. The device comprises two crimping type cantilever insulator hoops, two jumpers and two pre-twisted T-shaped connection wire clamps, a crimping type cantilever insulator hoop is arranged on the cantilever insulator of the flat cantilever and is connected with a jumper wire; the other crimping type cantilever insulator hoop is arranged on the inclined cantilever insulator and is connected with the other jumper wire; and the two jumpers are combined through one pre-twisted T-shaped connecting wire clamp and are connected with the return cable through the other pre-twisted T-shaped connecting wire clamp. Effective connection between the jumper wires and the cantilever insulator is realized through the crimping type cantilever insulator clamp, vertical connection between the two jumper wires or between the jumper wire and the return cable is realized through the pre-twisted T-shaped connection wire clamp, fixation with the pin insulator is realized through the pre-twisted binding wire, the pre-twisted wire clamp has good anti-fatigue and anti-vibration characteristics, and the pre-twisted binding wire has good anti-fatigue and anti-vibration characteristics. And a bolt fastening structure is not arranged, so that the overall wind resistance and fatigue resistance of the jumper loop are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrified railway contact networks, in particular to an insulating jumper device for a contact network. Background Art

[0002] In the electrified railway contact network system, the insulating jumper device is an extremely important safety protection structure. The insulating jumper can realize the leakage and drainage protection function by connecting the arm insulator and the return cable to form a jumper loop.

[0003] Currently, the commonly used insulated jumper device achieves a complete jumper circuit using the following structure: the jumper is bent over the arm insulator and secured with aluminum binding wire. After being secured with aluminum binding wire on a pin insulator, the jumper is led to the return line and connected to the return line using parallel groove clamp bolts. In harsh wind conditions, this structure can suffer from numerous problems caused by wind-induced fatigue, including wire and strand breakage at the binding points and loosening of parallel groove clamp bolts, seriously impacting the safety of the overhead contact network power supply.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned defects. Summary of the Invention

[0005] The utility model aims to provide an insulating jumper device for a contact network, so as to solve the problem that the existing insulating jumper device is prone to wind vibration fatigue in a severe wind environment.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] An insulated jumper device for a contact network, comprising two crimped arm insulator clamps, two jumpers and two pre-twisted T-type connecting wire clamps;

[0008] One of the crimped arm insulator clamps is installed on the flat arm insulator and is connected to one of the jumpers; another crimped arm insulator clamp is installed on the inclined arm insulator and is connected to another of the jumpers;

[0009] The two jumpers are combined through one pre-twisted T-shaped connecting wire clamp and connected to the return cable through another pre-twisted T-shaped connecting wire clamp.

[0010] Furthermore, the two combined jumpers are provided with pre-twisted binding wires, and the middle of the pre-twisted binding wires is connected to a pin insulator.

[0011] Furthermore, the crimped arm insulator clamp comprises an annular clamp and a crimping tube;

[0012] The annular hoop is fastened to the outer periphery of the flat cantilever insulator or the inclined cantilever insulator;

[0013] The compression tube is connected to the outer wall of the annular hoop and is connected to the jumper wire.

[0014] Further, the annular hoop includes a first semicircular metal hoop and a second semicircular metal hoop;

[0015] One end of the first semicircular metal clamp and the second semicircular metal clamp is a rotating end, and the rotating end is provided with a pin hole and connected by a pin shaft;

[0016] The other ends of the first semicircular metal clamp and the second semicircular metal clamp are fastening ends, and the fastening ends are provided with screw holes and are connected by bolts.

[0017] Furthermore, the fastening end of the first semicircular metal clamp or the second semicircular metal clamp is provided with an extension plate, and the end of the crimping tube is fixedly connected to the extension plate.

[0018] Furthermore, the pre-twisted T-shaped splicing clamp includes two L-shaped splicing clamps;

[0019] The L-shaped connecting wire clamp is composed of multiple spiral metal monofilaments and is L-shaped.

[0020] Furthermore, when the two jumpers are combined, the two L-shaped connecting wire clamps are respectively wound around the two jumpers, and one of the folded edges of the two L-shaped connecting wire clamps is combined with the jumper in the folded edge.

[0021] Furthermore, when the two jumpers are connected to the return cable, the two L-shaped connecting clamps are respectively wound onto the return cable, and one of the folded edges of the two L-shaped connecting clamps is wound onto the two jumpers together.

[0022] Furthermore, the pre-twisted binding wire is composed of a plurality of spiral metal monofilaments.

[0023] Furthermore, the pre-twisted binding wire includes two winding sections and a fastening section, the winding sections are wound around the jumper, and the fastening section is wound around the pin insulator.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The utility model provides an insulated jumper device for a contact network, which realizes effective connection between the jumper and the arm insulator through a crimping structure of a crimped arm insulator clamp, realizes vertical connection between two jumpers or a jumper and a return cable through a pre-twisted T-type connecting wire clamp, and realizes fixation with a pin insulator through a pre-twisted binding wire. The pre-twisted wire clamp has good fatigue and vibration resistance characteristics and does not have a bolt fastening structure, thereby greatly improving the overall wind resistance and fatigue resistance of the jumper circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0027] Figure 1 This is a schematic diagram of the installation of the device of the utility model.

[0028] Figure 2 It is a structural diagram of the device of the present utility model.

[0029] Figure 3 This is a structural diagram of the crimped wrist arm insulator clamp in the utility model.

[0030] Figure 4 This is a structural diagram of the pre-twisted T-type splicing clamp in the utility model.

[0031] Figure 5 This is a structural diagram of the pre-twisted binding wire in the utility model.

[0032] The symbols in the figure are:

[0033] 1- crimped wrist insulator clamp, 2- jumper wire, 3- pre-twisted binding wire, 4- pre-twisted T-type connecting wire clamp, 5- return cable, 6- pin insulator, 7- flat wrist insulator, 8- inclined wrist insulator;

[0034] 11-rotating end, 12-first semicircular metal clamp, 13-second semicircular metal clamp, 14-fastening end, 15-pressing tube;

[0035] 31- winding section, 32- fastening section;

[0036] 41-L type splice clamp. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] At the same time, in the description of the present invention, the terms "first", "second", etc. are used only to distinguish descriptions and should not be understood as indicating or implying relative importance. Of course, such terms can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described herein.

[0041] The utility model provides an insulating jumper device for a contact network, which can connect the jumper to the arm insulator and fix it through a pin insulator before connecting it to the return cable, thereby realizing a complete insulating jumper circuit. The overall structure can effectively prevent the hidden danger of jumper fatigue fracture caused by wind action, thereby increasing the product life of the insulating jumper and facilitating maintenance.

[0042] like Figure 1 and Figure 2 The present invention comprises two crimped arm insulator clamps 1, two jumpers 2, and two pre-twisted T-type connecting wire clamps 4, which are used to connect the flat arm arm insulator 7 to the return cable 5, and the inclined arm arm insulator 8 to the return cable 5, respectively. Specifically, one crimped arm insulator clamp 1 is installed on the flat arm arm insulator 7 and connected to one jumper 2; the other crimped arm insulator clamp 1 is installed on the inclined arm arm insulator 8 and connected to another jumper 2. The two jumpers 2 are combined by a pre-twisted T-type connecting wire clamp 4 and connected to the return cable 5 by another pre-twisted T-type connecting wire clamp 4.

[0043] In addition, a pre-twisted binding wire 3 is provided on the two combined jumpers 2 , and a pin insulator 6 is connected to the middle of the pre-twisted binding wire 3 .

[0044] In the above structure, the crimped arm insulator clamp 1 includes an annular hoop and a crimping tube 15. The annular hoop is fastened to the outer periphery of the flat arm arm insulator 7 or the inclined arm arm insulator 8. The crimping tube 15 is connected to the outer wall of the annular hoop and is connected to the jumper 2. Specifically, the crimping tube 15 is connected to the jumper 2 by crimping. The annular hoop includes a first semicircular metal clamp 12 and a second semicircular metal clamp 13, which are connected to form a ring. One end of the first semicircular metal clamp 12 and the second semicircular metal clamp 13 is a rotating end 11, and the rotating end 11 is provided with a pin hole and is connected by a pin shaft; the other end of the first semicircular metal clamp 12 and the second semicircular metal clamp 13 is a fastening end 14, and the fastening end 14 is provided with a screw hole and is connected by a bolt. Before the bolt is installed, the first semicircular metal clamp 12 and the second semicircular metal clamp 13 can rotate around the pin shaft and open. The fastening end 14 of the first semicircular metal clamp 12 or the second semicircular metal clamp 13 is provided with an extension plate, and the end of the crimping tube 15 is fixedly connected to the extension plate. Specifically, the crimping tube 15 and the extension plate are connected by welding.

[0045] The pre-twisted T-type splicing clamp 4 includes two L-shaped splicing clamps 41. The L-shaped splicing clamp 41 is composed of multiple spiral metal monofilaments and is L-shaped. After being bent 90°, it forms two folded edges that are perpendicular to each other. When two jumpers 2 are merged, the two L-shaped splicing clamps 41 are arranged and tightly wound around the two jumpers 2. One of the folded edges of the two L-shaped splicing clamps 41 merges with the jumper 2 in the folded edge, and finally merges vertically. When the two jumpers 2 are connected to the return cable 5, the two L-shaped splicing clamps 41 are arranged and tightly wound around the return cable 5. One of the folded edges of the two L-shaped splicing clamps 41 are arranged and tightly wound around the two jumpers 2, and finally connected vertically.

[0046] The pre-twisted binding wire 3 is composed of a plurality of spiral metal monofilaments. The pre-twisted binding wire 3 includes two winding sections 31 and a fastening section 32 . The winding section 31 is wound around the jumper 2 , and the fastening section 32 is wound around the pin insulator 6 .

[0047] This device effectively connects a jumper wire 2 to the arm insulator through a crimped-type arm insulator clamp 1. A pre-twisted T-shaped splice clamp 4 vertically connects two jumpers 2 or a jumper wire 2 to a return cable 5. Pre-twisted binding wires 3 secure the jumper wire to the pin insulator 6. The pre-twisted clamp offers excellent fatigue and vibration resistance, eliminating the need for bolted fastening, significantly improving the overall wind and fatigue resistance of the jumper circuit.

[0048] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. An insulating jumper device for a contact network, characterized in that: The device comprises two crimped arm insulator clamps (1), two jumpers (2) and two pre-twisted T-type connecting wire clamps (4); One of the crimped arm insulator clamps (1) is installed on a flat arm insulator (7) and connected to one of the jumpers (2); another of the crimped arm insulator clamps (1) is installed on a slanted arm insulator (8) and connected to another of the jumpers (2); The two jumper wires (2) are combined through one pre-twisted T-shaped connecting wire clamp (4), and are connected to the return cable (5) through another pre-twisted T-shaped connecting wire clamp (4).

2. The insulated jumper device for contact network according to claim 1, characterized in that: The two combined jumpers (2) are provided with a pre-twisted binding wire (3), and the middle of the pre-twisted binding wire (3) is connected to a pin-type insulator (6).

3. The insulated jumper device for contact network according to claim 1, characterized in that: The crimping type wrist arm insulator clamp (1) comprises an annular clamp and a crimping tube (15); The annular hoop is fastened to the outer periphery of the flat arm insulator (7) or the inclined arm insulator (8); The crimping tube (15) is connected to the outer wall of the annular hoop and is connected to the jumper wire (2).

4. The insulated jumper device for contact network according to claim 3, characterized in that: The annular hoop comprises a first semicircular metal hoop (12) and a second semicircular metal hoop (13); One end of the first semicircular metal clamp (12) and the second semicircular metal clamp (13) is a rotating end (11), and the rotating end (11) is provided with a pin hole and is connected via a pin shaft; The other ends of the first semicircular metal clamp (12) and the second semicircular metal clamp (13) are fastening ends (14), and the fastening ends (14) are provided with screw holes and are connected by bolts.

5. The insulated jumper device for contact network according to claim 4, characterized in that: The fastening end (14) of the first semicircular metal clamp (12) or the second semicircular metal clamp (13) is provided with an extension plate, and the end of the crimping tube (15) is fixedly connected to the extension plate.

6. The insulated jumper device for contact network according to claim 1, characterized in that: The pre-twisted T-shaped connecting wire clamp (4) comprises two L-shaped connecting wire clamps (41); The L-shaped connecting wire clamp (41) is composed of a plurality of spiral metal monofilaments and is L-shaped.

7. The insulated jumper device for contact network according to claim 6, characterized in that: When the two jumpers (2) are combined, the two L-shaped connecting wire clamps (41) are respectively wound around the two jumpers (2), and one of the folded edges of the two L-shaped connecting wire clamps (41) is combined with the jumper (2) in the folded edge.

8. The insulated jumper device for contact network according to claim 6, characterized in that: When the two jumpers (2) are connected to the return cable (5), the two L-shaped connecting wire clamps (41) are respectively wound onto the return cable (5), and one of the folded edges of the two L-shaped connecting wire clamps (41) is wound onto the two jumpers (2) together.

9. The insulated jumper device for contact network according to claim 2, characterized in that: The pre-twisted binding wire (3) is composed of a plurality of spiral metal monofilaments.

10. The insulated jumper device for contact network according to claim 9, characterized in that: The pre-twisted binding wire (3) comprises two winding sections (31) and a fastening section (32), wherein the winding section (31) is wound around the jumper (2), and the fastening section (32) is wound around the pin insulator (6).

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