Integral suspension string anti-wear crimping device and method

Abstract

The present invention relates to the technical field of integral suspension strings, and discloses an anti-wear crimping device and method for integral suspension strings, comprising a crimping copper tube, wherein a nest is embedded in the crimping copper tube; a plurality of channels for the stranded wires to pass through are opened at the end of the nest; an isolation structure is provided in the nest for isolating the plurality of channels to avoid contact between the stranded wires. The present invention embeds a nest made of nylon material in the crimping copper tube, so that during the vibration of the integral suspension string, under the structural action of the inner wall, direct contact between the wires is avoided, causing friction between the nest and the stranded wire. The nest is made of nylon material, has good self-lubrication, and is soft in texture, which can effectively avoid failure of the suspension string caused by wire wear. At the same time, the use of an arc surface structure can avoid direct contact between the stranded wire and the crimping copper tube to prevent wear. This solves the problem that the contact points between the two wires and the contact points between the wire and the crimping tube are very prone to wear during vibration, causing the stranded wire to break and fail.

Description

Technical Field

[0001] The present invention relates to the technical field of integral hanger strings, and in particular to an anti-wear crimping device and method for integral hanger strings. Background Art

[0002] The high-speed railway contact network is a device that ensures the safety of railway transportation. The integral dropper is one of the important components of the contact network system. It is installed between the load-bearing cable and the contact wire, and is used to maintain the contact suspension point, improve the sag and elastic uniformity of the contact wire, adjust the structural height of the contact suspension, and play a certain role in bearing capacity and current carrying. When the pantograph passes, the contact wire continues to rise and vibrate, and the integral dropper is also raised and bent accordingly. In a long-term outdoor environment, the integral dropper used for electrified railways will break at the crimping due to the vibration of running vehicles, and the dropper will wear and break wires and strands. The main wear point of the traditional integral dropper is the connection between the crimping tube and the stranded wire. The traditional crimping tube is directly crimped and contacted with the copper stranded wire. The wear points at this connection are: the contact point between the two wires, the contact point between the wire and the crimping tube, (such as Figure 1 and Figure 2 (As shown) is very easy to wear out during the vibration process, causing the stranded wire to break and fail. Therefore, an integral anti-wear crimping device for the suspension string is urgently needed to solve the above-mentioned problem of easy damage. Summary of the Invention

[0003] The present invention aims to provide a wear-resistant crimping device and method for integral dropper strings, in order to address the aforementioned background art issues, such as the tendency of integral dropper strings for electrified railways to break at the crimping joints and suffer wear and tear of the string wires, resulting in broken wires and strands, due to vibrations from long periods of operation in outdoor environments. Conventional integral dropper strings primarily wear out at the connection between the crimping tube and the stranded wire. Conventional crimping tubes directly crimp and contact the copper stranded wires, with the damaged points at these connections being the contact points between the two wires and the contact point between the wire and the crimping tube. These points are susceptible to wear and tear during vibration, leading to stranded wire breakage and failure.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an integral anti-wear crimping device for a suspension string, comprising a crimping copper tube, wherein a nesting is embedded in the crimping copper tube;

[0005] The end of the nest is provided with a plurality of channels for the stranded wires to pass through; an isolation structure is provided inside the nest for isolating the plurality of channels to avoid contact between the stranded wires.

[0006] Preferably, the side of the channel is provided with a contraction structure that enables the aperture thereof to be deformed and contracted;

[0007] Both ends of the channel are provided with arc surface structures for avoiding damage to the stranded wires through smooth transition;

[0008] The outer side of the nest is provided with an anti-fall-out structure for preventing the nest from falling out from the lower part of the crimped copper tube;

[0009] The outer side of the nest is provided with an anti-slip structure for increasing the friction between the outer wall of the nest and the inner wall of the crimped copper tube.

[0010] Preferably, the nest comprises a casing;

[0011] There are two channels, each of which includes a first pipe opening and a second pipe opening;

[0012] The first pipe opening and the second pipe opening are both opened at the ends of the sleeve;

[0013] The shrinkage structure includes a shrinkage opening. The sides of the first through-pipe opening and the second through-pipe opening are both provided with a shrinkage opening, and the two shrinkage openings are located on the same side of the sleeve.

[0014] Preferably, the arc surface structure includes a first arc surface and a second arc surface, the first and second pipe openings are both provided with a first arc surface at one side of the pipe opening, and the first and second pipe openings are both provided with a second arc surface at the other side of the pipe opening.

[0015] Preferably, the anti-escape structure includes an external boss, which is fixed at one side end of the sleeve; the shape of the external boss is the same as the shape of the end of the crimped copper tube, but the corresponding dimensions of the outer edges of the external boss are larger than the dimensions of the corresponding positions of the end of the crimped copper tube, which can prevent the external boss from being inserted into the nested tube mouth.

[0016] Preferably, the anti-slip structure includes a raised component.

[0017] Preferably, the raised component includes a convex ring, which is provided in a plurality and evenly distributed on the outside of the sleeve; the isolation structure includes an inner wall, which is provided between the first through-pipe opening and the second through-pipe opening.

[0018] Preferably, the end of the crimped copper tube is provided with a nesting tube opening for nesting and insertion; the sleeve is made of a material with good self-lubrication and a soft texture, which can effectively prevent the stranded wire from being worn; the sleeve is embedded in the nesting tube opening.

[0019] Preferably, the sleeve is made of nylon material.

[0020] In addition, the present invention also provides a method for using the integral suspension string anti-wear crimping device, comprising the following steps:

[0021] S1. Check whether the crimped copper tube, nesting and stranded wire are damaged. If damaged, replace them with new undamaged parts.

[0022] S2, passing the stranded wire through the first through-pipe opening and the second through-pipe opening in sequence, and then passing the stranded wire through the nested pipe opening;

[0023] S3. Put the crimped copper tube on the outside of the nest.

[0024] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0025] By embedding a nylon nesting material within the crimped copper tube, the present invention prevents direct contact between the wires during the vibration of the entire suspension string due to the structural action of the inner wall, resulting in friction between the nesting material and the stranded wire. The nesting material is made of nylon, which has good self-lubrication and a relatively soft texture, effectively preventing suspension string failure caused by wire wear. At the same time, the use of a curved surface structure can prevent direct contact between the stranded wire and the crimped copper tube, preventing wear. This solves the problem of the stranded wire breaking and failure due to wear and tear at the contact points between the two wires and the contact points between the wire and the crimped tube during vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a schematic diagram of the traditional crimping tube and stranded wire connection structure;

[0028] Figure 2 Schematic diagram of the wear points at the connection between the traditional crimped tube and the stranded wire;

[0029] Figure 3 It is a structural schematic diagram of the present invention;

[0030] Figure 4 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the nested and twisted wire connection structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the nested and twisted wire connection state of the present invention;

[0033] Figure 7 This is a schematic diagram of the crimped copper tube and nested connection structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the crimped copper tube and the nested connection state of the present invention;

[0035] Figure 9 This is a schematic diagram of the nested front structure of the present invention;

[0036] Figure 10This is a schematic diagram of the nested back structure of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of the crimped copper tube of the present invention;

[0038] Figure 12 It is a schematic diagram of the top view of the structure of the crimped copper tube and the nested connection state of the present invention;

[0039] Figure 13 This is a schematic diagram of the structure of the crimped copper tube and the nested connection state of the present invention when viewed from above;

[0040] Figure 14 This is a schematic diagram of the front view structure of the convex ring of the present invention, which adopts a convex shape with an arc-shaped surface;

[0041] Figure 15 This is a schematic structural diagram from a back perspective of the convex ring of the present invention, in which the convex ring has an arc-shaped surface and a convex shape.

[0042] Explanation of the accompanying drawings: 1. Crimped copper tube; 2. Nesting; 3. Twisted wire; 4. Heart-shaped embedded ring; 5. Traditional crimped tube; 101. Nested tube opening; 201. Sleeve; 202. First through-tube opening; 203. Second through-tube opening; 204. External boss; 205. convex ring; 206. Contraction opening; 207. First arc surface; 208. Second arc surface; 209. Inner wall. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0048] In outdoor environments for extended periods, the integral dropper strings used in electrified railways can experience fractures at the crimped joints and wear and tear of the string wires, resulting in broken wires and strands due to vibration from running vehicles. The main wear point for conventional integral dropper strings is the connection between the crimping tube and the stranded wire. Conventional crimping tubes are directly crimped and contacted with the copper stranded wire. The damaged points at this connection are: the contact point between the two wires and the contact point between the wire and the crimping tube. During vibration, wear and tear can easily occur, causing the stranded wire to break and fail. To address the issue of easily damaged points in integral dropper strings, this embodiment employs the following technical solutions:

[0049] Example 1

[0050] See also Figure 3-13 , the present invention provides a technical solution: an integral anti-wear crimping device for hanging strings, comprising a crimping copper tube 1, in which a nesting 2 is embedded;

[0051] The end of the nest 2 is provided with a plurality of channels for the stranded wires 3 to pass through; the stranded wires 3 are soft copper stranded wires, and the channels are used to pass through the soft copper stranded wires.

[0052] The side of the channel is provided with a shrinkage structure that enables its aperture to deform and shrink; when the crimped copper tube 1 is squeezed and deformed, it shrinks under the squeezing of the copper tube so that the nesting tightly embraces the stranded wire 3.

[0053] Both ends of the channel are provided with arc structures to avoid damage to the stranded wire 3 through smooth transition;

[0054] An anti-fallout structure is provided on the outside of the nest 2 to prevent the nest 2 from falling out from the bottom of the crimped copper tube 1; it can be supported on the crimped copper tube 1 to prevent the nest 2 from falling out from the bottom.

[0055] The outer side of the nest 2 is provided with an anti-slip structure to increase the friction between the outer wall of the nest 2 and the inner wall of the crimped copper tube 1; after the crimped copper tube 1 shrinks, the contact area between the inside of the crimped copper tube 1 and the nest 2 is reduced to increase the friction and prevent it from falling off;

[0056] An isolation structure is provided in the nest 2 to isolate the plurality of channels and prevent contact between the strands 3. It is best if the nest 2 and the isolation structure are integrally formed to enhance structural stability.

[0057] After the stranded wire 3 passes through the channel, it is embedded in the heart-shaped ring 4, and then the crimped copper tube 1 is put on the nest 2 and checked to see if it is installed in place.

[0058] Example 2

[0059] See also Figure 3-13 The differences between Example 2 and Example 1 are as follows: a nesting opening 101 for inserting a nesting element 2 is formed at the end of the crimped copper tube 1; the nesting element 2 includes a sleeve 201; two channels are provided, including a first opening 202 and a second opening 203; the first opening 202 and the second opening 203 are circular in shape and are both located at the ends of the sleeve 201. The contraction structure includes a contraction opening 206, which is formed on the sides of the first opening 202 and the second opening 203, and is located on the same side of the sleeve 201.

[0060] The arc surface structure includes a first arc surface 207 and a second arc surface 208. The first arc surface 207 and the second arc surface 208 are arc-shaped smooth surfaces. The first arc surface 207 is provided at the pipe opening on one side of the first pipe opening 202 and the second pipe opening 203, and the second arc surface 208 is provided at the pipe opening on the other side of the first pipe opening 202 and the second pipe opening 203.

[0061] The anti-slip structure includes an external boss 204, which is fixed to one end of the sleeve 201. The shape of the external boss 204 is the same as the shape of the end of the crimped copper tube 1, but the corresponding dimensions of the outer edges of the external boss 204 are larger than the corresponding dimensions of the end of the crimped copper tube 1, which can prevent the external boss 204 from being inserted into the nested tube opening 101.

[0062] The anti-slip structure includes a raised part; the purpose of the raised part is to increase the friction between the nest 2, and the shape can be a combination of one or more shapes.

[0063] The raised part includes a raised ring 205, which is provided in a plurality and evenly distributed on the outer side of the sleeve 201. The friction between the crimped copper tube 1 and the nest 2 can be increased.

[0064] The structure of the convex ring 205 can adopt various shapes;

[0065] For example:

[0066] refer to Figure 9 and Figure 10 , the structure of the convex ring 205 adopts a square strip convex shape;

[0067] refer to Figure 14 and Figure 15 , the structure of the convex ring 205 adopts a convex shape with an arc-shaped surface;

[0068] For another example, the convex ring 205 can adopt wave-shaped protrusions and columnar protrusions, etc., which can increase the friction between the convex ring 2 and the nest 2.

[0069] The isolation structure includes an inner wall 209, which is disposed between the first through-pipe opening 202 and the second through-pipe opening 203. The inner wall 209 separates and isolates the first through-pipe opening 202 from the second through-pipe opening 203.

[0070] The sleeve 201 is made of a material with good self-lubrication and a soft texture, which can effectively prevent the stranded wire 3 from being worn; the sleeve 201 is embedded in the nested pipe mouth 101. The preferred material is that the sleeve 201 is made of nylon material.

[0071] After the stranded wire 3 is inserted through the first through-tube opening 202 and the second through-tube opening 203, the stranded wire 3 is passed through the crimped copper tube 1, and then the heart-shaped embedded ring 4 is embedded in the stranded wire 3, and then the crimped copper tube 1 is put on the outside of the nest 2. Due to the existence of the shrinkage opening 206, the nest 2 is squeezed by the crimped copper tube 1, so that the apertures of the first through-tube opening 202 and the second through-tube opening 203 are contracted, thereby holding the stranded wire 3 tightly; under the action of the convex ring 205, the friction between the crimped copper tube 1 and the nest 2 is increased, and the anti-slip ability is improved; under the smooth transition of the first arc surface 207 and the second arc surface 208, the stranded wire 3 can be prevented from contacting and being worn by the crimped copper tube 1; in addition, the stranded wires 3 are isolated by the inner wall 209, which can avoid direct contact between the wires and avoid wear; the nest 2 is made of nylon material, and the nest 2 made of nylon material has good self-lubrication and a soft texture, which can effectively avoid failure of the suspension string caused by wire wear.

[0072] In addition, the present invention also provides a method for using the integral suspension string anti-wear crimping device, comprising the following steps:

[0073] S1. Check whether the crimped copper tube 1, nesting 2 and stranded wire 3 are damaged. If damaged, replace them with new undamaged parts.

[0074] S2, after the stranded wire 3 passes through the first through-pipe opening 202 and the second through-pipe opening 203 in sequence, the stranded wire 3 passes through the nested pipe opening 101;

[0075] S3. Put the crimped copper tube 1 on the outside of the nest 2.

[0076] In summary, the present invention embeds a nylon nesting 2 in the crimped copper tube 1, so that during the vibration of the entire suspension string, the structure of the inner wall 209 avoids direct contact between the wires, causing the nesting 2 to rub against the stranded wire 3. The nesting 2 is made of nylon, which has good self-lubrication and a soft texture, which can effectively avoid failure of the suspension string caused by wire wear. At the same time, the use of an arc surface structure can avoid direct contact between the stranded wire 3 and the crimped copper tube 1 to prevent wear. This solves the problem that the contact points between the two wires and the contact points between the wires and the crimped tube are very prone to wear during vibration, causing the stranded wire to break and fail.

[0077] The embodiments of the present invention have been described in detail with reference to the accompanying drawings. It should be noted that any implementations not depicted or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods described in the embodiments; those skilled in the art may easily modify or replace them.

[0078] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of the present invention may be made, without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

[0079] The above specific embodiments further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integral anti-wear crimping device for hanging strings, comprising a crimping copper tube (1), characterized in that: The crimped copper tube (1) is embedded with a nest (2); The end of the nest (2) is provided with a plurality of channels for the strands (3) to pass through; an isolation structure is provided inside the nest (2) for isolating the plurality of channels to prevent contact between the strands (3); The side of the channel is provided with a contraction structure that enables the aperture thereof to be deformed and contracted; Both ends of the channel are provided with arc surface structures for avoiding damage to the stranded wire (3) through smooth transition; An anti-fall-out structure is provided on the outer side of the nest (2) to prevent the nest (2) from falling out from the lower part of the crimped copper tube (1); The outer side of the nest (2) is provided with an anti-slip structure for increasing the friction between the outer wall of the nest (2) and the inner wall of the crimped copper tube (1); The nest (2) includes a casing (201); The channels are provided in two forms, each channel comprising a first pipe opening (202) and a second pipe opening (203); The first pipe opening (202) and the second pipe opening (203) are both opened at the end of the sleeve (201); The shrinkage structure comprises a shrinkage opening (206), and the sides of the first through-pipe opening (202) and the second through-pipe opening (203) are both provided with a shrinkage opening (206), and the two shrinkage openings (206) are located on the same side of the sleeve (201); The anti-slip structure includes an external boss (204), which is fixed to one end of the sleeve (201); the shape of the external boss (204) is the same as the shape of the end of the crimped copper tube (1), but the corresponding dimensions of the outer edges of the external boss (204) are larger than the dimensions of the corresponding positions of the end of the crimped copper tube (1), thereby preventing the external boss (204) from being inserted into the nested tube opening (101).

2. The integral anti-wear crimping device for suspension strings according to claim 1, characterized in that: The arc surface structure comprises a first arc surface (207) and a second arc surface (208); the first arc surface (207) is provided at one side of the first pipe opening (202) and the second pipe opening (203); and the second arc surface (208) is provided at the other side of the first pipe opening (202) and the second pipe opening (203).

3. The integral anti-wear crimping device for suspension strings according to claim 2, characterized in that: The anti-slip structure includes a protruding part.

4. The integral anti-wear crimping device for suspension strings according to claim 3, characterized in that: The raised component comprises a raised ring (205), which is provided in a plurality and evenly distributed on the outside of the sleeve (201); the isolation structure comprises an inner wall (209), which is provided between the first through-pipe opening (202) and the second through-pipe opening (203).

5. The integral anti-wear crimping device for suspension strings according to claim 4, characterized in that: The end of the crimped copper tube (1) is provided with a nesting tube opening (101) for inserting the nest (2); the sleeve (201) is made of a material with good self-lubrication and a relatively soft texture, which can effectively prevent the stranded wire (3) from being worn; the sleeve (201) is embedded in the nesting tube opening (101).

6. The integral anti-wear crimping device for suspension strings according to claim 5, characterized in that: The sleeve (201) is made of nylon material.

7. A method for using the integral anti-wear crimping device for suspension strings according to claim 6, characterized in that: The following steps are involved: S1. Check whether the crimped copper tube (1), nesting (2) and stranded wire (3) are damaged. If damaged, replace them with new undamaged parts. S2, after the stranded wire (3) passes through the first through-pipe opening (202) and the second through-pipe opening (203) in sequence, the stranded wire (3) is then passed through the nested pipe opening (101); S3. Put the crimped copper tube (1) on the outside of the nest (2).

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