Existing line integral dropper

Abstract

The utility model discloses an existing line integral dropper which comprises a carrier cable dropper clamp, a contact line dropper clamp and a dropper line, one end of the dropper line is connected with the carrier cable dropper clamp, the other end of the dropper line is connected with the contact line dropper clamp, the contact line dropper clamp is connected with a contact line retaining ring, and the dropper line is arranged in the contact line retaining ring in a penetrating mode. The dropper wire is provided with a contact wire crimping pipe used for locking one end, close to the contact wire retaining ring, of the dropper wire. The integral dropper further comprises a compression joint fixing part, the carrier cable dropper wire clamp is connected with a carrier cable retaining ring, the dropper wire is arranged in the carrier cable retaining ring in a penetrating mode, the two ends of the dropper wire penetrate out of the compression joint fixing part, the compression joint fixing part is arranged close to the carrier cable retaining ring, and an adjusting part used for adjusting the length of the dropper wire is arranged on the dropper wire. The crimping fixing part is positioned between the carrier cable retaining ring and the adjusting part; wherein the crimping fixing piece is used for adjusting the length of the dropper line and then locking the dropper line. The problem of dropper waste can be effectively solved, and the construction cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of overhead contact network construction, and in particular to an integral suspension string for an existing line. Background Art

[0002] Existing lines refer to lines that have already been built. Usually when the line is to be modified, it is called an existing line.

[0003] The dropper is one of the important components of the contact network in railway electrical engineering. The contact wire is hung on the load-bearing cable through the dropper. Adjusting the length of the dropper can ensure the structural height of the contact suspension and the working height of the contact wire from the rail surface, increase the suspension points of the contact wire, and meet the current collection quality of the pantograph of the electric locomotive.

[0004] At present, integral non-adjustable suspension strings are widely used in the expansion and reconstruction projects of existing high-speed railways and conventional railways, which improve the operating stability of the contact network and greatly reduce the frequency of equipment maintenance.

[0005] There are two conventional methods for arranging the existing line's integral non-adjustable suspension strings:

[0006] One method is to use the overall adjustable droppers for layout and adjust the droppers to the required length. However, because the adjustable droppers are too expensive, the overall non-adjustable droppers need to be replaced after the line is stable. Although this method can ensure the accuracy of the overhead line height data, it requires a large number of replacements and adjustments of the droppers, resulting in a lot of waste and increased engineering costs.

[0007] Another method is to directly arrange integral non-adjustable suspension strings, replace the suspension strings of inappropriate length during the line connection and tamping process, and replace the inappropriate suspension strings again after the line is completely stable. Compared with the first method, this method reduces the amount of adjustment and replacement of the suspension strings, but there is still a large waste of time and materials in replacing the suspension strings. This method is currently a common method in the construction of existing lines.

[0008] Due to the tight construction schedule and the long pre-laid line section, the above two conventional methods of arranging the suspension strings require a large number of replacements of the suspension strings after the elevation and line position of the line are stable or the line is unplugged and rammed, which leads to increased costs and extended construction period. Utility Model Content

[0009] In order to reduce the construction cost of hanging strings for existing lines and shorten the construction period, the present application provides an integral hanging string for existing lines.

[0010] The present application provides an existing line integral suspension string adopting the following technical solution:

[0011] An existing line integral suspension string, comprising a load-bearing cable suspension string clamp, a contact line suspension string clamp and a suspension string, one end of the suspension string is connected to the load-bearing cable suspension string clamp, and the other end is connected to the contact line suspension string clamp, the contact line suspension string clamp is connected to a contact line guard ring, the suspension string is inserted into the contact line guard ring, and a contact line crimping tube for locking one end of the suspension string close to the contact line guard ring is arranged on the suspension string;

[0012] The integral suspension string also includes a crimping fixture, the load-bearing cable suspension string line clamp is connected to a load-bearing cable retaining ring, the suspension string is inserted into the load-bearing cable retaining ring, both ends of the suspension string are inserted from the crimping fixture, the crimping fixture is arranged close to the load-bearing cable retaining ring, an adjusting piece for adjusting the length of the suspension string is arranged on the suspension string, and the crimping fixture is located between the load-bearing cable retaining ring and the adjusting piece;

[0013] Wherein, the crimping fixture is used to lock the suspension string after adjusting its length.

[0014] By adopting the above technical solution, before installing the suspension string, the length of the suspension string at the end of the contact line is still fixed according to the traditional method; then the calculated length of the suspension string is initially fixed by using the adjusting piece, and after installing the suspension string, after the line is dialed and tamped, the adjusting piece is loosened, and the length of the suspension string between the load-bearing cable and the contact line is adjusted so that the height of the conductor reaches the design requirements. After the adjustment is completed, the crimping fixing piece is crimped, and after the crimping is completed, the adjusting piece is removed. Compared with the two conventional suspension string arrangement methods, the present application does not need to replace the suspension string again, which solves the problem of suspension string waste during the adjustment process of the suspension string, can fully guarantee the strength of the suspension string fixation, and is simple to operate. During the adjustment process of the suspension string, only one more crimping step is required than the conventional step, and the construction efficiency is high. Compared with the previous construction method, the problem of suspension string waste can be effectively solved without making major changes, and the construction cost can also be effectively reduced.

[0015] Optionally, the crimping fixture is a load-bearing cable crimping tube.

[0016] By adopting the above technical solution, the load-bearing cable compression pipe is basically used as a standard part for the installation of the suspension string. It is easy to purchase, cheap, has a good fixing effect, and can effectively meet the locking requirements of the suspension string.

[0017] Optionally, the adjusting member is an adjustable bolt or a nylon buckle.

[0018] By adopting the above technical solution, the adjustable bolts are basically used as standard parts for installing the suspension strings, which can meet the needs of pre-tightening and adjustment of the suspension strings. The construction personnel can complete the operation without additional teaching, and the installation efficiency is high and the installation cost is low. During the construction of new lines, since the construction of new lines is not affected by the power supply, the adjustable bolts can be replaced with nylon buckles, which further saves material costs.

[0019] Optionally, the outer wall of the suspension string is provided with a locking tooth, the crimping fixture comprises a tube body, and the inner wall of the tube body is provided with a serration engaged with the locking tooth.

[0020] By adopting the above technical solution, after the tube body is crimped, the latch teeth and the serrations are engaged with each other, and at the same time, the outer walls of the two suspension strings are engaged with each other through the latch teeth. Under the action of the tube body clamping the suspension strings, even if the entire suspension string is exposed to wind and rain for a long time, the suspension string basically cannot be offset, and the length of the suspension string can be further locked, thereby reducing the number of times the suspension string is replaced and extending the service life of the suspension string.

[0021] Optionally, both the latch teeth and the saw teeth are elastic.

[0022] By adopting the above technical solution, before the tube body is crimped, the tube body can have a certain locking force relative to the suspension string, preventing the tube body from sliding directly relative to the suspension string. Only when sufficient external force is applied can the tube body move relative to the suspension string. Therefore, through such a design, it can be fully guaranteed that the position of the tube body before crimping does not change, thereby reducing the need to readjust the position of the tube body and improving the convenience of subsequent adjustment of the length of the suspension string.

[0023] Optionally, two mutually parallel string-hanging limiting holes are formed on the inner wall of the tube body, and the string-hanging wire passes through the string-hanging limiting holes.

[0024] By adopting the above technical solution, the two suspension strings are made parallel to each other through the suspension string limit holes. When the two suspension strings are parallel, they can evenly share the load. At the same time, the suspension strings are usually installed in a relatively small space. If the suspension strings are not parallel, it may cause space conflicts, making installation difficult or even impossible. At the same time, parallel suspension strings help provide better strength and stability.

[0025] Optionally, the two suspension string limiting holes are interconnected.

[0026] By adopting the above technical solution, after the pipe body is crimped, the outer walls of two adjacent suspension strings can also be clamped together, further improving the locking effect of the suspension strings.

[0027] Optionally, the saw teeth extend along the length direction of the tube body, and a plurality of the saw teeth are arranged along the circumference of the tube body.

[0028] By adopting the above technical solution, before the tube body is crimped, there is a certain locking force between the serrations and the block, which reduces the displacement of the tube body relative to the suspension string. The tube body can move relative to the suspension string only when sufficient external force is applied. Therefore, after the position of the tube body is initially fixed, the tube body is not easy to shift, which reduces the need for subsequent adjustment of the tube body and improves installation accuracy.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Compared with the two conventional methods of arranging suspension strings, the present application does not need to replace the suspension strings again, thus solving the problem of suspension string waste during the suspension string adjustment process. It can fully guarantee the strength of the suspension string fixation and is simple to operate. During the suspension string adjustment process, only one more crimping step is required than the conventional steps, thus achieving high construction efficiency. Moreover, compared with the previous construction method, the suspension string waste problem can be effectively solved without major changes, and the construction cost can also be effectively reduced.

[0031] 2. The load-bearing cable compression pipe is basically used as a standard part for the installation of suspension strings. It is easy to purchase, cheap, has a good fixing effect, and can effectively meet the locking requirements of the suspension strings.

[0032] 3. After the tube body is crimped, the clamping teeth and the serrations are engaged with each other, and at the same time, the outer walls of the two suspension strings are engaged with each other through the clamping teeth. Under the action of the tube body clamping the suspension strings, even if the entire suspension string is exposed to wind and rain for a long time, the suspension string basically cannot be shifted, which can further lock the length of the suspension string, reduce the number of string replacements, and extend the service life of the suspension string. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0034] Figure 2 It is a schematic diagram of the final state after the string is safely suspended in Example 1 of the present application.

[0035] Figure 3 This is a longitudinal section view of Example 2 of the present application, which mainly shows the connection between the tube body and the suspension string.

[0036] Figure 4 This is a cross-sectional view of Example 2 of the present application, which mainly shows the connection between the tube body and the suspension string.

[0037] Description of reference numerals:

[0038] 100, load-bearing cable string clamp; 110, load-bearing cable retaining ring; 120, second current-carrying ring; 200, contact wire string clamp; 210, contact wire retaining ring; 220, contact wire crimping tube; 230, first current-carrying ring; 300, suspension string; 310, wire nose; 320, latch; 400, crimping fixture; 410, load-bearing cable crimping tube; 420, tube body; 421, suspension string limit hole; 422, serration; 500, adjustment piece; 510, adjustable bolt. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-4 This application is described in further detail.

[0040] Example 1

[0041] The present application embodiment discloses an existing wire integral suspension string. Figure 1 and Figure 2 The overall suspension string includes a load-bearing cable suspension string clamp 100, a contact line suspension string clamp 200 and a suspension string 300. Wire noses 310 are installed at both ends of the suspension string 300. The wire noses 310 and the load-bearing cable suspension string clamp 100 or the wire noses 310 and the contact line suspension string clamp 200 are fixed by bolts.

[0042] Among them, the contact wire suspension string clamp 200 is connected with a contact wire guard ring 210, which is a heart-shaped guard ring in this embodiment, with openings at both ends of the heart-shaped guard ring, and the suspension string 300 is inserted from one end of the heart-shaped guard ring and passes out from the other end of the heart-shaped guard ring. The suspension string 300 is placed on the outer periphery of both ends of the heart-shaped guard ring and is provided with a contact wire crimping tube 220, and the suspension string 300 passes through the contact wire crimping tube 220. The line segment of the suspension string 300 from the contact wire crimping tube 220 to the contact wire end line nose 310 is the first current-carrying ring 230. In the field of integral suspension strings, the length of the first current-carrying ring 230 is generally determined. After adjusting the length of the first current-carrying ring 230, the construction personnel crimp the contact wire crimping tube 220 to lock the length of the first current-carrying ring 230. The operation of crimping the contact wire crimping tube 220 can be performed in the process of prefabricating the integral suspension string on the ground, which is convenient for personnel to operate.

[0043] Among them, the integral suspension string also includes a crimping fixture 400, the load-bearing cable suspension string line clamp 100 is connected to the load-bearing cable guard ring 110, the load-bearing cable guard ring 110 has the same structure as the contact line guard ring 210, the suspension string 300 passes through the load-bearing cable guard ring 110, and both ends of the suspension string 300 placed outside the load-bearing cable guard ring 110 pass through the crimping fixture 400, the crimping fixture 400 is arranged close to the load-bearing cable guard ring 110, and an adjustment piece 500 for adjusting the length of the suspension string 300 is arranged on the suspension string 300, and the crimping fixture 400 is located between the load-bearing cable guard ring 110 and the adjustment piece 500.

[0044] In one embodiment, the adjusting member 500 is an adjustable bolt 510. When the suspension string is prefabricated, the suspension string line 300 is adjusted so that the length of the suspension string line 300 from the contact line crimping tube 220 to the crimping fixing member 400 meets the calculation requirements, and then the adjustable bolt 510 is installed to lock the length of the suspension string line 300. In other embodiments, the adjusting member 500 may also be a nylon buckle to further save costs.

[0045] At the same time, in this embodiment, the crimping fixture 400 is a load-bearing cable crimping tube 410, which is a clamping tube commonly used in the field of suspension strings. When the length of the suspension string is determined, the load-bearing cable crimping tube 410 is crimped using a tool to lock the length of the suspension string.

[0046] Before using the crimping fixture 400 to lock the length of the suspension string, it is necessary to use the adjustable bolt 510 to adjust the length of the suspension string 300, that is, after the line is dialed and rammed, in order to meet the requirements, the length of the suspension string 300 needs to be fine-tuned. At this time, it is necessary to loosen the adjusting piece 500 and adjust the length of the suspension string 300 between the load-bearing cable and the contact line so that the conductor height meets the design requirements; after the adjustment is completed, the load-bearing cable crimping tube 410 is crimped, and after the crimping is completed, the adjusting piece 500 is removed.

[0047] In addition, the line segment of the suspension string 300 from the load-bearing cable compression tube 410 to the line end of the suspension string 300 is the second current-carrying ring 120. After the length of the previous suspension string 300 is adjusted, the length of the second current-carrying ring 120 needs to meet the design requirements. The length of the second current-carrying ring 120 is generally designed to be 200 mm. When prefabricating the suspension string, the line segment of the suspension string 300 from the load-bearing cable compression tube 410 to the line end of the suspension string 300 is generally longer. At this time, the second current-carrying ring 120 needs to be cut, the wire nose 310 is reinstalled, and then the wire nose 310 is fixed to the load-bearing cable suspension string clamp 100 to finally complete the installation and adjustment of the suspension string.

[0048] The implementation principle of the integral suspension string of an existing line in Example 1 of the present application is: compared with the two conventional suspension string arrangement methods, the present application does not need to replace the suspension string line 300 again, which solves the problem of waste of the suspension string line 300 during the suspension string adjustment process, can fully ensure the fixing strength of the suspension string line 300, and is simple to operate. During the suspension string adjustment process, only one more crimping step is required than the conventional steps, and the construction efficiency is high. Compared with the previous construction method, the suspension string waste problem can be effectively solved without making major changes, and the construction cost can also be effectively reduced.

[0049] Example 2

[0050] The difference between this embodiment and the first embodiment is that the structure of the crimping fixture 400 is different.

[0051] Reference Figure 3 and Figure 4 In this embodiment, the crimping fixture 400 includes a tube body 420, and two mutually parallel string limiting holes 421 are opened on the inner wall of the tube body 420. The string 300 passes through the string limiting holes 421. The string limiting holes 421 make the two string 300 passing through parallel. After the two string 300 are parallel, the tube body 420 is crimped, and the string 300 is locked by the tube body 420. Crimping after making the string 300 parallel can help improve the installation convenience of the string 300 and the tube body 420, and can make the two string 300 evenly share the load, and improve the locking strength and stability of the string 300.

[0052] At the same time, the inner wall of the tube body 420 is provided with saw teeth 422, which extend along the length direction of the tube body 420. A plurality of saw teeth 422 are provided along the circumference of the tube body 420, and the plurality of saw teeth 422 are evenly distributed. At the same time, the outer wall of the suspension string 300 is provided with a clamping tooth 320, and both the clamping tooth 320 and the saw tooth 422 are elastic, and the clamping tooth 320 and the saw tooth 422 are clamped together. Since the latch teeth 320 and the serrations 422 are elastic, before the tube body 420 is crimped, the tube body 420 can have a certain locking force relative to the suspension string 300, thereby preventing the tube body 420 from directly sliding relative to the suspension string 300, thereby ensuring the accuracy of the position of the tube body 420. After the tube body 420 is crimped, the tube body 420 locks the suspension string 300. On the one hand, the latch teeth 320 are engaged with the serrations 422, thereby reducing the possibility of relative movement between the tube body 420 and the suspension string 300. On the other hand, the latch teeth 320 are engaged with each other between the suspension strings 300, thereby reducing the possibility of relative displacement between the suspension strings 300, thereby further locking the suspension string.

[0053] Compared with Example 1, the advantage of this embodiment is that the locking ability of the suspension string 300 is stronger. After the suspension string 300 is locked, it is less likely to loosen, which helps to reduce the phenomenon that the suspension string 300 needs to be replaced due to changes in length, thereby extending the service life of the suspension string 300.

Claims

1. An existing wire integral suspension string, comprising a load-bearing cable suspension string clamp (100), a contact line suspension string clamp (200), and a suspension string (300), wherein one end of the suspension string (300) is connected to the load-bearing cable suspension string clamp (100), and the other end is connected to the contact line suspension string clamp (200), the contact line suspension string clamp (200) is connected to a contact line guard ring (210), the suspension string (300) is inserted into the contact line guard ring (210), and a contact line crimping tube (220) is provided on the suspension string (300) for locking one end of the suspension string (300) close to the contact line guard ring (210); It is characterized in that The integral suspension string also includes a crimping fixture (400), the load-bearing cable suspension string line clamp (100) is connected to a load-bearing cable retaining ring (110), the suspension string (300) is inserted into the load-bearing cable retaining ring (110), both ends of the suspension string (300) are inserted into the crimping fixture (400), the crimping fixture (400) is arranged close to the load-bearing cable retaining ring (110), an adjustment piece (500) for adjusting the length of the suspension string (300) is arranged on the suspension string (300), and the crimping fixture (400) is located between the load-bearing cable retaining ring (110) and the adjustment piece (500); The crimping fixture (400) is used to lock the suspension string (300) after adjusting the length of the suspension string (300).

2. The existing wire integral suspension string according to claim 1, characterized in that: The crimping fixing member (400) is a load-bearing cable crimping tube (410).

3. The existing wire integral suspension string according to claim 1 or 2, characterized in that: The adjusting member (500) is an adjustable bolt (510) or a nylon buckle.

4. The existing wire integral suspension string according to claim 1, characterized in that: The outer wall of the suspension string (300) is provided with a latching tooth (320), the crimping fixture (400) comprises a tube body (420), and the inner wall of the tube body (420) is provided with a saw tooth (422) that is latched with the latching tooth (320).

5. The existing wire integral suspension string according to claim 4, characterized in that: The latch teeth (320) and the saw teeth (422) are both elastic.

6. The existing wire integral suspension string according to claim 4, characterized in that: The inner wall of the tube body (420) is provided with two mutually parallel string-hanging position-limiting holes (421), and the string-hanging wire (300) passes through the string-hanging position-limiting holes (421).

7. The existing wire integral suspension string according to claim 6, characterized in that: The two suspension string limiting holes (421) are communicated with each other.

8. The existing wire integral suspension string according to claim 4, characterized in that: The saw teeth (422) extend along the length direction of the tube body (420), and a plurality of the saw teeth (422) are arranged along the circumference of the tube body (420).

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