CN214689121U - Backup wire clamp for elastic sling - Google Patents
Backup wire clamp for elastic sling Download PDFInfo
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- CN214689121U CN214689121U CN202120509573.2U CN202120509573U CN214689121U CN 214689121 U CN214689121 U CN 214689121U CN 202120509573 U CN202120509573 U CN 202120509573U CN 214689121 U CN214689121 U CN 214689121U
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- elastic sling
- twisted
- spiral section
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Abstract
The utility model provides a backup cable clamp for an elastic sling, which relates to the field of an electrified railway contact net and comprises a first pre-twisted spiral section, a middle transition pre-twisted spiral section and a second pre-twisted spiral section which are connected in sequence; the middle transition pre-twisted spiral section is arc-shaped, and the outer diameter of the first pre-twisted spiral section is larger than that of the second pre-twisted spiral section. The utility model provides a backup fastener for elastic sling can reduce the elastic sling in the vibration degree of wear of fastener department, increase elastic sling's life-span to and effectively support and hang the contact wire after elastic sling fracture or elastic sling fastener became invalid, guarantee that the train normally passes through, strive for the time for the circuit maintenance, guarantee that the circuit smoothly moves.
Description
Technical Field
The utility model belongs to the technical field of the technique of electronic railway connecting net and specifically relates to a backup cable clamp for elastic sling.
Background
An electrified railway contact net is a power transmission line which is erected over a railway line and supplies power to an electric locomotive, and the electrified railway contact net is divided into two types of simple suspension and elastic chain-shaped suspension according to contact types. Simple suspension is a form of suspension that is directly fixed to the post support by a contact wire. In the elastic chain-shaped suspension, a contact wire is suspended on a carrier cable through an elastic sling, a hanger and an elastic sling wire clamp, the carrier cable is suspended on a supporting device, so that suspension points are added to the contact wire under the condition that a support is not added, and the distance between the contact wire and a rail surface in the whole span is kept consistent by adjusting the length of the hanger in order to ensure that a locomotive pantograph and the contact wire smoothly pass through.
Compared with simple suspension, the elastic chain-shaped suspension is applied, so that the sag of the contact wire in the middle of the span is reduced, the elasticity of the contact wire at a suspension point of a carrier cable is improved, the stability is improved, and the requirement of high-speed operation current taking of an electric locomotive can be met. However, although the spring chain suspension provides better performance than a simple suspension, it also presents many problems such as maintenance, for example: due to long-term operation of the railway line, the abrasion of the fixed part of the elastic sling and the elastic sling wire clamp at the suspension part is accelerated, and the elastic sling is broken; or the elastic suspension cable clamp causes the suspension string to loose due to long-term vibration failure, and the contact line conductivity is influenced; these will directly influence the normal operation of the train, even the network collapse accident will happen in severe cases, and the normal operation of the whole line will be influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a backup fastener for elastic sling, this backup fastener for elastic sling can reduce the vibration degree of wear of elastic sling in fastener department, increase elastic sling's life-span to and effectively support the suspension contact line after elastic sling fracture or elastic sling fastener became invalid, guarantee that the train normally passes through, strive for the time for the circuit maintenance, guarantee that the circuit smoothly moves.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
the embodiment of the utility model provides a backup wire clamp for an elastic sling, which comprises a first pre-twisted spiral section, a middle transition pre-twisted spiral section and a second pre-twisted spiral section which are connected in sequence; the middle transition pre-twisted spiral section is arc-shaped, and the outer diameter of the first pre-twisted spiral section is larger than that of the second pre-twisted spiral section.
In an alternative embodiment, the second pretwisted spiral segment is configured to cover the elastic sling at the installation site at a rate of not less than 55% of the surface area of the elastic sling at the installation site.
In an alternative embodiment, the outer diameter of the first pre-twisted spiral section and the outer diameter of the second pre-twisted spiral section are both larger than the outer diameter of the middle transition pre-twisted spiral section.
In an alternative embodiment, an end of the second pre-twisted spiral section far from the middle transition pre-twisted spiral section is provided with an end portion tilt.
In an optional embodiment, conductive sand is paved on the inner side surface of the first pre-twisted spiral section and the inner side surface of the second pre-twisted spiral section.
In an alternative embodiment, the angle between the extension line of the first pre-twisted spiral section and the extension line of the second pre-twisted spiral section is 14 to 16 degrees.
In an alternative embodiment, the backup wire clamp for the elastic sling is integrally formed by gluing and then twisting a plurality of spiral metal wires side by side on the outer layer.
In an alternative embodiment, the backup clip for the elastic sling is integrally made of copper-magnesium alloy wires.
In an alternative embodiment, the backup cable clamp for the elastic sling is integrally made of copper-clad steel wires.
The embodiment of the utility model provides a can realize following beneficial effect:
the embodiment of the utility model provides a backup wire clamp for an elastic sling, which comprises a first pre-twisted spiral section, a middle transition pre-twisted spiral section and a second pre-twisted spiral section which are connected in sequence; the middle transition pre-twisted spiral section is arc-shaped, and the outer diameter of the first pre-twisted spiral section is larger than that of the second pre-twisted spiral section.
Will the embodiment of the utility model provides a backup fastener for elastic sling installs behind the mounted position, elastic sling is on fixing the basis at the carrier cable through the elastic sling fastener, strengthen fixedly through its inboard backup fastener for elastic sling, in the actual operation of circuit, the vibration degree of wear of elastic sling in elastic sling fastener department has been reduced effectively, the frequent phenomenon of buckling of elastic sling has been reduced, elastic sling broken strand in elastic sling fastener exit has been reduced, the frequency of occurrence of fracture problem, the life-span of elastic sling has been increased, electrical connectivity has been increased, and simultaneously, still can effectively support the suspension contact line in the short-term after elastic sling fracture, avoid the davit to sink, guarantee that the train normally passes through, strive for the time for the circuit maintenance, guarantee that the circuit smoothly moves.
The embodiment of the utility model provides a backup wire clamp for elastic sling can accomplish direct mount on current circuit, simple to operate, and beneficial effect is obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a backup cable clamp for an elastic sling according to an embodiment of the present invention;
fig. 2 is a schematic view of an installation structure of a backup cable clamp for an elastic sling according to an embodiment of the present invention.
Icon: 100-backup wire clamps for elastic slings; 110-a first pre-twisted helical section; 120-middle transition pre-twisted spiral section; 130-a second pre-twisted helical section; 131-tilting the end part; 200-elastic sling wire clips; 300-catenary cable; 400-elastic slings; 500-a dropper; 600-contact line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, the backup clip 100 for the elastic sling includes a first pre-twisted spiral section 110, a middle transition pre-twisted spiral section 120, and a second pre-twisted spiral section 130, which are sequentially connected; the middle transition pre-twisted spiral section 120 is arc-shaped, and the outer diameter of the first pre-twisted spiral section 110 is larger than that of the second pre-twisted spiral section 130.
As shown in fig. 2, during installation, firstly sand paper is used for polishing oxide layers on the surfaces of the carrier cable 300 and the elastic sling 400 at the installation position, then the first pre-twisted spiral segment 110 is wound and installed on the carrier cable 300, and then the second pre-twisted spiral segment 130 is wound and installed on the elastic sling 400, so that the installation of the backup cable clamp 100 for the elastic sling at one side of the elastic chain-shaped suspension is completed, and the mode is repeated to install the backup cable clamp 100 for the elastic sling at the other side of the elastic chain-shaped suspension.
After installation, the elastic sling 400 is fixed on the basis of the carrier cable 300 through the elastic sling wire clamp 200, and is reinforced and fixed by the backup wire clamp 100 through the elastic sling at the inner side of the elastic sling, so that in the actual operation of a line, the vibration abrasion degree of the elastic sling 400 at the elastic sling wire clamp 200 is effectively reduced, the frequent bending phenomenon of the elastic sling 400 is reduced, the occurrence frequency of the problems of strand breakage and breakage of the elastic sling 400 at the outlet of the elastic sling wire clamp 200 is reduced, the service life of the elastic sling 400 is prolonged, the electric connectivity is increased, meanwhile, the suspended contact line 600 can be still effectively supported in a short period after the elastic sling 400 is broken, the collapse of the sling 500 is avoided, the normal passing of a train is ensured, the time is won for line maintenance, and the smooth operation of the line is ensured.
The backup wire clamp 100 for the elastic sling provided by the embodiment can be directly installed on the existing line, is convenient to install, and has obvious beneficial effects.
In order to increase the installation stability of the backup clip 100 for an elastic sling, in an alternative embodiment of the present embodiment, the second pre-twisted spiral segment 130 is preferably configured to cover the installation site of the elastic sling 400 with a coverage rate not less than 55% of the surface area of the installation site of the elastic sling 400, so as to increase the contact area between the second pre-twisted spiral segment 130 and the elastic sling 400 during installation and increase the friction force.
In order to increase the overall structural strength of the backup cable clamp 100 for the elastic sling, in an optional embodiment of the present embodiment, it is preferable that the outer diameter of the first pre-twisted spiral segment 110 and the outer diameter of the second pre-twisted spiral segment 130 are both greater than the outer diameter of the middle transitional pre-twisted spiral segment 120, and the middle transitional pre-twisted spiral segment 120 is formed as a spirally dense twisted segment, so as to have stronger supporting force and make the backup cable clamp for the elastic sling not easy to deform.
To avoid scratching the elastic sling 400 during installation, in an alternative embodiment of this embodiment, the end of the second pre-twisted spiral segment 130 distal from the middle transitional pre-twisted spiral segment 120 is preferably provided with an end turn-up 131 as shown in fig. 1.
In an optional implementation manner of this embodiment, it is preferable that conductive sand is laid on both the inner side surface of the first pre-twisted spiral section 110 and the inner side surface of the second pre-twisted spiral section 130, so as to further increase the gripping force of the spiral sections.
In addition, in order to further increase the structural strength of the backup clip 100 for the elastic sling, in an optional embodiment of the present embodiment, the backup clip 100 for the elastic sling is preferably formed by twisting a plurality of spiral wires side by side and then gluing the outer layer of the spiral wires. When making the backup clip 100 for the elastic sling, the metal wire can be made into a spiral shape with a consistent diameter on a forming machine, then combining a plurality of metal wires in a sheet structure in a mode of outer layer viscose after being arranged side by side, then keeping one end of the metal wires unchanged as a first pre-twisted spiral section 110, twisting the middle section of the metal wires based on the original spiral direction to form a middle transition pre-twisted spiral section 120, twisting the other end of the metal wires based on the original spiral direction to form a second pre-twisted spiral section 130 with the coating rate of the elastic sling 400 not less than 55%, and further manufacturing fine structures such as an end tip 131 and the like according to the optional embodiments, of course, in some alternative embodiments, after the plurality of wires are combined side-by-side and in the form of an outer layer of adhesive into a sheet-like structure, and laying conductive sand on the inner layer, and then pre-twisting to form a middle transition pre-twisted spiral section 120 and a second pre-twisted spiral section 130.
In this embodiment, optionally, the backup cable clamp 100 for the elastic sling is integrally made of a copper-magnesium alloy wire or a copper-clad steel wire, and is preferably made of the same material as the carrier cable 300 and the elastic sling 400, so that the backup cable clamp has no electrochemical corrosion, is uniformly stressed, and has no stress concentration.
In addition, in this embodiment, the arc-shaped angle of the middle transition pre-twisted spiral section 120 can be bent by using a special tool according to the measured included angle between the carrier cable 300 and the elastic sling 400 at the installation position, so that the bending angle is the same as the measured included angle, and for facilitating the bending, preferably, an arbitrary included angle within a range of 14 degrees, 15 degrees or 14-16 degrees is prefabricated between the extension line of the first pre-twisted spiral section 110 and the extension line of the second pre-twisted spiral section 130, or the arc-shaped angle can be directly installed at the installation position without further bending according to the prefabricated included angle, and the prefabricated included angle range is suitable for the included angles between most carrier cables 300 and elastic slings 400 at present.
Finally, it should be noted that: the embodiments in the present description are all described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments can be referred to each other; the above embodiments in the present specification are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A backup wire clamp (100) for an elastic sling is characterized by comprising a first pre-twisted spiral section (110), a middle transition pre-twisted spiral section (120) and a second pre-twisted spiral section (130) which are sequentially connected; the middle transition pre-twisted spiral section (120) is arc-shaped, and the outer diameter of the first pre-twisted spiral section (110) is larger than that of the second pre-twisted spiral section (130).
2. The backup clip (100) for an elastic sling according to claim 1, wherein the second pre-twisted helical section (130) is configured to cover the surface area of the installed elastic sling (400) at a rate of not less than 55% of the surface area of the installed elastic sling (400).
3. The backup clip (100) for an elastic sling according to claim 1, wherein the first pre-twisted helix segment (110) and the second pre-twisted helix segment (130) each have an outer diameter greater than the outer diameter of the middle transition pre-twisted helix segment (120).
4. The backup clip (100) for an elastic sling according to claim 1, wherein the second pre-twisted helical segment (130) is provided with an end turn-up (131) at the end remote from the middle transition pre-twisted helical segment (120).
5. The backup clip (100) for an elastic sling according to claim 1, wherein conductive sand is laid on both the inner side of the first pre-twisted spiral section (110) and the inner side of the second pre-twisted spiral section (130).
6. The backup clip (100) for a resilient sling according to claim 1, wherein the angle between the extension of the first pre-twisted helical segment (110) and the extension of the second pre-twisted helical segment (130) is 14-16 degrees.
7. The backup clip (100) for an elastic sling according to claim 1, wherein the backup clip (100) for an elastic sling is integrally formed by gluing and back-twisting a plurality of spiral wires side by side and an outer layer.
8. The backup clip (100) for an elastic sling according to any one of claims 1 to 7, wherein the backup clip (100) for an elastic sling is made entirely of copper-magnesium alloy wire.
9. The backup clip (100) for an elastic sling according to any one of claims 1 to 7, wherein the backup clip (100) for an elastic sling is made entirely of copper-clad steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120509573.2U CN214689121U (en) | 2021-03-09 | 2021-03-09 | Backup wire clamp for elastic sling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120509573.2U CN214689121U (en) | 2021-03-09 | 2021-03-09 | Backup wire clamp for elastic sling |
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| CN214689121U true CN214689121U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120509573.2U Active CN214689121U (en) | 2021-03-09 | 2021-03-09 | Backup wire clamp for elastic sling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114475368A (en) * | 2022-02-23 | 2022-05-13 | 北京帕尔普线路器材有限公司 | Pre-twisted wiring system of railway contact net |
-
2021
- 2021-03-09 CN CN202120509573.2U patent/CN214689121U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114475368A (en) * | 2022-02-23 | 2022-05-13 | 北京帕尔普线路器材有限公司 | Pre-twisted wiring system of railway contact net |
| CN114475368B (en) * | 2022-02-23 | 2023-11-14 | 北京帕尔普线路器材有限公司 | Preformed wiring system of railway contact net |
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