CN212991344U - Preformed shunting reinforcing wire clamp - Google Patents
Preformed shunting reinforcing wire clamp Download PDFInfo
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- CN212991344U CN212991344U CN202022075408.9U CN202022075408U CN212991344U CN 212991344 U CN212991344 U CN 212991344U CN 202022075408 U CN202022075408 U CN 202022075408U CN 212991344 U CN212991344 U CN 212991344U
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Abstract
The utility model discloses a pre-twisted shunting reinforcing wire clamp, which comprises a plurality of metal wires arranged in parallel in a contact way, wherein the surfaces of the metal wires are plated with metal layers for avoiding electrochemical corrosion between copper alloy and aluminum; the pre-twisted shunting reinforcing wire clamp rotates spirally, one end of the pre-twisted shunting reinforcing wire clamp is a first twisted section, the other end of the pre-twisted shunting reinforcing wire clamp is a second twisted section, the first twisted section is twisted on the aluminum conductor, and the second twisted section is twisted on the copper alloy conductor. The utility model discloses a preformed helical reposition of redundant personnel reinforcement fastener, first transposition section and second transposition section strand respectively on aluminium wire and copper alloy wire, the wire surface of preformed helical reposition of redundant personnel reinforcement fastener is plated with the metal level of avoiding taking place electrochemical corrosion between copper alloy and the aluminium, that is to say, when realizing that copper alloy wire and aluminium wire are connected, effectively reduces the electronegativity between the metal, avoids the electrochemical corrosion problem that copper alloy wire and aluminium wire are connected; simple structure and convenient installation.
Description
Technical Field
The utility model belongs to the technical field of the electronic railway connecting net technique and specifically relates to play a reposition of redundant personnel reinforcement clamp to copper aluminium transition parallel groove fastener and pre-twisted type reposition of redundant personnel fastener of reposition of redundant personnel reinforcing effect.
Background
With the rapid development of the electrified railways in China, the performance requirements of railway systems on parts of contact networks of the electrified railways are higher and higher. A power supply line fed out by the traction substation is used for providing power for a railway contact network system, and the power supply line is connected to different power supply arms of the contact network system through a suspension device; the power supply line generally adopts an aluminum-clad steel core aluminum stranded wire LBGLJ-185 or LBGLJ-240, and is connected with a soft copper stranded wire RTJ-95 or RTJ-120 of a railway contact net system through a copper-aluminum transition parallel groove clamp so as to supply power to a network point on the contact net.
Because the copper-aluminum transition parallel groove clamp generally adopts a welding process to connect copper and aluminum together, the copper-aluminum transition parallel groove clamp has higher requirements on welding quality, friction welding is generally adopted for welding, and the defects of non-fusion, slag inclusion, misalignment and the like are easily generated at the welding joint part due to the process and the like, and the electrolyte can be possibly retained in the welding gap of the defects, so that the corrosion of the copper-aluminum transition parallel groove clamp is caused, and the copper-aluminum transition can generate heat and even can be burnt; in addition, the coefficient of thermal expansion of copper and aluminium on the copper aluminium transition parallel groove clamp is different, and frequent temperature variation can cause the stress of welding part, finally leads to the fracture of product, and is out of work, and when serious, can burn out connecting wire, causes the railway to have a power failure, and then causes the railway driving accident. In addition, in the operation and maintenance process, the distance between the connecting position of the copper-aluminum transition parallel groove clamp and the maintenance range is far, so that maintenance personnel are not easy to find out at the initial stage of the fault, and the fault is further worsened.
The existing method for improving the operational reliability of the copper-aluminum transition parallel groove clamp generally increases the welding process requirement on friction welding, which greatly increases the process difficulty and the process cost of welding the copper-aluminum transition parallel groove clamp, and has extremely limited effect in improving the operational reliability of the parallel groove clamp by adopting the improved process. After the copper-aluminum transition parallel groove clamp fails and breaks, serious accidents can be caused, and initial faults of the copper-aluminum transition parallel groove clamp are not easy to find by maintenance personnel.
Therefore, how to solve the technical defects of the copper-aluminum transition parallel groove clamp is a problem to be solved urgently by the technical staff in the field.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a preformed helical reposition of redundant personnel reinforcement fastener can play reposition of redundant personnel and reinforced (rfd) effect to copper aluminium transition parallel groove fastener, and the difficult electrochemical corrosion that takes place of fastener itself.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a pre-twisted shunting reinforcing wire clamp comprises a plurality of metal wires which are arranged in parallel in a contact mode, wherein a metal layer for avoiding electrochemical corrosion between copper alloy and aluminum is plated on the surface of each metal wire; the pre-twisted shunting reinforcing wire clamp rotates spirally, one end of the pre-twisted shunting reinforcing wire clamp is a first twisted section, the other end of the pre-twisted shunting reinforcing wire clamp is a second twisted section, the first twisted section is twisted on the aluminum conductor, and the second twisted section is twisted on the copper alloy conductor.
Further, the pre-twisted shunt reinforcing wire clamp is installed adjacent to the copper-aluminum transition parallel groove wire clamp.
Furthermore, the middle part of the pre-twisted shunting reinforcing wire clamp is provided with a bent part, and one side and the other side of the bent part are respectively provided with a first twisted section and a second twisted section.
Furthermore, the first twisting section and the second twisting section are L-shaped.
Furthermore, the pre-twisted shunting reinforcing wire clamp further comprises a reinforcing strip, the surface of the copper alloy conductor is wrapped by the reinforcing strip, and the second twisting section is twisted to the surface of the reinforcing strip.
Further, the bending part is marked by color code points.
Further, the first twisted section is far away from the copper-aluminum transition parallel groove clamp.
The utility model discloses a preformed helical reposition of redundant personnel reinforcement fastener, first transposition section and second transposition section strand respectively on aluminium wire and copper alloy wire, the wire surface of preformed helical reposition of redundant personnel reinforcement fastener is plated with the metal level of avoiding taking place electrochemical corrosion between copper alloy and the aluminium, that is to say, when realizing that copper alloy wire and aluminium wire are connected, effectively reduces the electronegativity between the metal, avoids the electrochemical corrosion problem that copper alloy wire and aluminium wire are connected; simple structure and convenient installation.
Drawings
Fig. 1 is a schematic view of an installation effect of an example of the present invention;
in the figure:
1. a first twisted section; 2. a second twisted section; 3. an aluminum wire; 4. a copper alloy wire; 5. reinforcing the strips; 6. Copper-aluminum transition parallel groove clamp.
Detailed Description
To clearly illustrate the design concept of the present invention, the following description is made with reference to the examples.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are described below clearly and completely with reference to the drawings in the examples of the present invention, and it is obvious that the described examples are only a part of examples of the present invention, but not all examples. Based on the middle examples of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish similar items and are not to be construed as requiring a particular order or sequence, and it is to be understood that such uses are interchangeable under appropriate circumstances.
In the prior art, the connection of a copper alloy wire and an aluminum wire has the following problems:
copper alloy, during aluminium wire lug connection, the contact surface of these two kinds of metals is very easily formed electrolyte under the effect of moisture in the air, carbon dioxide and other impurity, aluminium and copper are compared, aluminium is more active, thereby the aluminium that forms is the negative pole, copper is anodal primary cell, make aluminium produce galvanic corrosion, cause copper, the aluminium junction generates grey-white aluminium oxide, aluminium and copper junction contact resistance increase, time is slightly long, junction contact resistance can increase, generate heat, break very easily arouse the building conflagration when causing the circuit. In addition, the elastic modulus and the thermal expansion coefficient of copper and aluminum are greatly different, so that after multiple cold and hot cycles (power on and power off) in operation, a large gap is generated at a contact point to influence contact, and contact resistance is increased. The increase in contact resistance causes a temperature increase during operation. The corrosion and oxidation are intensified at high temperature, so that vicious circle is generated, the connection quality is further deteriorated, and finally, the contact point temperature is overhigh and even accidents such as smoking, burning and the like can occur.
Therefore, in order to connect the aluminum wire and the copper alloy wire together, a copper-aluminum transition wire clamp or a transition wire pipe is needed, and a copper-aluminum transition parallel groove clamp is generally adopted at present.
The utility model provides a pre-twisted shunting reinforcing wire clamp, which comprises a plurality of metal wires arranged in parallel in a contact way, wherein the surfaces of the metal wires are plated with metal layers for avoiding electrochemical corrosion between copper alloy and aluminum; the pre-twisted shunting reinforcing wire clamp rotates spirally, one end of the pre-twisted shunting reinforcing wire clamp is a first twisted section, the other end of the pre-twisted shunting reinforcing wire clamp is a second twisted section, the first twisted section is twisted on the aluminum conductor, and the second twisted section is twisted on the copper alloy conductor.
The utility model discloses a preformed helical reposition of redundant personnel reinforcement fastener, first transposition section and second transposition section strand respectively on aluminium wire and copper alloy wire, the wire surface of preformed helical reposition of redundant personnel reinforcement fastener is plated with the metal level of avoiding taking place electrochemical corrosion between copper alloy and the aluminium, that is to say, when realizing that copper alloy wire and aluminium wire are connected, effectively reduces the electronegativity between the metal, avoids the electrochemical corrosion problem that copper alloy wire and aluminium wire are connected; simple structure and convenient installation.
It should be noted that the utility model discloses a preformed helical reposition of redundant personnel reinforcement fastener can the exclusive use, and a plurality of preformed helical reposition of redundant personnel reinforcement fasteners of installation department can play reposition of redundant personnel and reinforced (rfd) effect in the different positions of copper conductor, do not use the excessive parallel groove fastener of copper aluminium promptly, also can realize the current conduction, simultaneously, avoided the electrochemical corrosion problem that copper, aluminium conductor are connected.
The following example illustrates the use of a pre-twisted split reinforcing clamp in conjunction with a copper-aluminum transitional parallel groove clamp.
The embodiment shown in fig. 1 provides a preformed stranded shunt reinforcing wire clamp of the present invention, which comprises a plurality of metal wires arranged in side-by-side contact, wherein the metal wires are coated with a metal layer for avoiding electrochemical corrosion between copper alloy and aluminum, and the metal layer can be a tin coating, a silver coating, a tin-silver alloy coating, a zinc coating or other metal coatings with similar properties; the pre-twisted shunting reinforcing wire clamp rotates spirally, one end of the pre-twisted shunting reinforcing wire clamp is a first twisted section 1, the other end of the pre-twisted shunting reinforcing wire clamp is a second twisted section 2, the first twisted section 1 is twisted on an aluminum conductor 3, and the second twisted section is twisted on a copper alloy conductor 4.
The aluminium conductor 3 in this example may be an aluminium clad steel core aluminium stranded wire and the copper alloy conductor 4 may be a soft copper stranded wire of a railway contact net system.
The pre-twisted shunt reinforcement clamp in this example is mounted adjacent to the copper-aluminum transition parallel groove clamp 6. The pre-twisted shunting reinforcing wire clamp and the copper-aluminum transition wire clamp 6 are in a parallel connection mode, so that the mechanical stress of the copper-aluminum transition parallel groove wire clamp 6 is effectively improved, the tensile force borne by the copper-aluminum transition parallel groove wire clamp 6 is reduced, and the damage and fatigue of the aluminum wire 3, the copper alloy wire 4 and the copper-aluminum transition parallel groove wire clamp 6 caused by vibration are relieved; meanwhile, the pre-twisted shunting reinforcing wire clamp can share the flow guiding capacity of the copper-aluminum transition parallel groove wire clamp 6, and the service life of the copper-aluminum transition parallel groove wire clamp 6 is prolonged. The grip force on the aluminum conductor 3 and the copper alloy conductor 4 is uniform, and the reliability of the diversion connection point can be effectively improved. When the copper-aluminum transition parallel groove clamp 6 breaks and fails, the pre-twisted shunt reinforcing clamp can also provide necessary current conduction capability, maintain the normal operation of the circuit, play the function of preventing the drainage wire from falling, provide a time window for the circuit maintainer to find problems, and improve the reliability of the whole operation of the circuit.
In this example, the middle part of the pre-twisted shunting reinforcing wire clamp is provided with a bending part, and one side and the other side of the bending part are respectively a first twisted section 1 and a second twisted section 2. Wherein, the first twisted section 1 and the second twisted section 2 are L-shaped. Preferably, the included angle of the first twisted section 1 and the second twisted section may be 90 °. The bending part is marked by color code points so as to facilitate the installation of the pre-twisted shunting reinforcing wire clamp.
In this example, the pre-twisted shunt reinforcing wire clamp further comprises a reinforcing strip 5, the reinforcing strip 5 is wrapped on the surface of the copper alloy conductor 4, and the second twisted section 2 is twisted on the surface of the reinforcing strip 5. Enabling the second twisted section 2 to be twisted more tightly to the copper alloy wire 4.
As shown in fig. 1, the first strand section 1 is remote from the copper aluminum transition parallel groove clamp 6. The pre-twisted shunting reinforcing wire clamp can be closer to the copper-aluminum transition parallel groove wire clamp 6, and the shunting and reinforcing effects on the copper-aluminum transition parallel groove wire clamp 6 are more remarkable.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.
Claims (7)
1. A pre-twisted shunting reinforcing wire clamp is characterized by comprising a plurality of metal wires which are arranged in parallel in a contact mode, wherein a metal layer for avoiding electrochemical corrosion between copper alloy and aluminum is plated on the surface of each metal wire; the pre-twisted shunting reinforcing wire clamp rotates spirally, one end of the pre-twisted shunting reinforcing wire clamp is a first twisted section, the other end of the pre-twisted shunting reinforcing wire clamp is a second twisted section, the first twisted section is twisted on the aluminum conductor, and the second twisted section is twisted on the copper alloy conductor.
2. The pre-twisted shunt reinforcement clamp of claim 1, wherein the pre-twisted shunt reinforcement clamp is mounted adjacent to a copper-aluminum transition parallel groove clamp.
3. The pre-twisted shunt reinforcing wire clamp according to claim 2, wherein a bend is formed in the middle of the pre-twisted shunt reinforcing wire clamp, and a first twisted section and a second twisted section are respectively formed on one side and the other side of the bend.
4. The pre-twisted shunt reinforcement clip of claim 3, wherein the first twisted section and the second twisted section are L-shaped.
5. The pre-twisted shunt reinforcement wire clamp of claim 4, further comprising a reinforcement strip wrapped around a surface of the copper alloy wire, wherein the second twisted section is twisted to the surface of the reinforcement strip.
6. The pre-twisted shunt reinforcing clamp according to claim 3, wherein the bend is marked with a color code point.
7. The pre-twisted shunt reinforcement clamp according to any one of claims 2 to 6, wherein the first twisted section is distal from the copper-aluminum transition parallel groove clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022075408.9U CN212991344U (en) | 2020-09-21 | 2020-09-21 | Preformed shunting reinforcing wire clamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022075408.9U CN212991344U (en) | 2020-09-21 | 2020-09-21 | Preformed shunting reinforcing wire clamp |
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| Publication Number | Publication Date |
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| CN212991344U true CN212991344U (en) | 2021-04-16 |
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| CN202022075408.9U Active CN212991344U (en) | 2020-09-21 | 2020-09-21 | Preformed shunting reinforcing wire clamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987490A (en) * | 2020-09-21 | 2020-11-24 | 北京帕尔普线路器材有限公司 | Preformed shunting reinforcing wire clamp |
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- 2020-09-21 CN CN202022075408.9U patent/CN212991344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987490A (en) * | 2020-09-21 | 2020-11-24 | 北京帕尔普线路器材有限公司 | Preformed shunting reinforcing wire clamp |
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