CN215869988U

CN215869988U - Water-blocking cable for rail transit

Info

Publication number: CN215869988U
Application number: CN202122184973.3U
Authority: CN
Inventors: 丁丽萍; 张春友
Original assignee: Quantong Cable Ltd By Share Ltd
Current assignee: Quantong Cable Ltd By Share Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-18
Anticipated expiration: 2031-09-10

Abstract

The application relates to a water-blocking cable for rail transit, which comprises a first cable, a second cable and a connecting piece, wherein the connecting piece comprises a first connecting part and a second connecting part, the first connecting part comprises a first fixing barrel and a first connecting barrel, and the outer wall of the end part of the first cable is provided with a first thread; the second connecting part comprises a second fixed cylinder and a second connecting cylinder, and second threads are arranged on the outer wall of the end part of the second cable; the inner wall of the first connecting cylinder is in threaded connection with the outer wall of the second connecting cylinder to form sealing; the junction of the first cable and the second cable is located within the first connector barrel and the second connector barrel. The first connecting part and the second connecting part seal the circumferential direction of the connecting part of the first cable and the second cable, so that the water resistance of the cable is improved, and the use safety of the cable is improved; the positioning ring and the fixing ring are arranged, so that the connection stability of the first connecting part and the second connecting part is improved; through setting up first stereoplasm cover, make the leakproofness of the junction of first screw thread and first fixed cover outer wall keep good.

Description

Water-blocking cable for rail transit

Technical Field

The application relates to the technical field of cables, in particular to a water blocking cable for rail transit.

Background

Rail transit refers to a type of vehicle or transportation system in which operating vehicles need to travel on a particular rail. The most typical rail transit is a railway system consisting of conventional trains and standard railways. With the diversified development of train and railway technologies, rail transit is more and more types, and is not only distributed in long-distance land transportation, but also widely applied to medium-short distance urban public transportation.

The rail transit is an important component of a traffic junction, a large number of cables are required to be used for guaranteeing normal operation of the rail transit in the rail transit, the types of the cables of the rail transit are various, the rail transit is suitable for different working scenes, and different cables are selected according to different use requirements.

The existing track traffic cable is fixedly connected by the aid of the insulating adhesive tape when being connected, but the insulating adhesive tape is poor in connection firmness and is exposed to the sun in a natural environment, so that the bonding strength of the insulating adhesive tape is reduced, the insulating adhesive tape is difficult to completely seal the joint of the two cables, the cables are poor in water resistance, the joint is easy to leak electricity after being soaked, and potential safety hazards exist for people, equipment and vehicles around.

SUMMERY OF THE UTILITY MODEL

In order to improve the poor problem of the water blocking performance of cable, this application provides a water blocking cable for track traffic.

The application provides a cable that blocks water for track traffic adopts following technical scheme:

a water blocking cable for track traffic comprises a first cable, a second cable and a connecting piece for connecting the end parts of the first cable and the second cable, wherein the connecting piece comprises a first connecting part and a second connecting part, the first connecting part comprises a first fixing cylinder and a first connecting cylinder which are coaxially fixed, and the outer wall of the end part of the first cable is provided with a first thread which is used for being in threaded connection with the inner wall of the first fixing cylinder to form sealing;

the second connecting part comprises a second fixed cylinder and a second connecting cylinder, and second threads used for being in threaded connection with the second fixed cylinder to form sealing are arranged on the outer wall of the end part of the second cable; the inner wall of the first connecting cylinder is in threaded connection with the outer wall of the second connecting cylinder to form sealing; the junction of the first cable and the second cable is located within the first connector barrel and the second connector barrel.

Through adopting above-mentioned technical scheme, the junction of first cable and second cable is located first connecting cylinder and second connecting cylinder, first solid fixed cylinder forms sealedly with first cable threaded connection, the solid fixed cylinder of second and second cable threaded connection form sealedly, and first connecting cylinder and second connecting cylinder threaded connection form sealedly, make the circumference of the junction of first cable and second cable form sealedly, improve the water-blocking nature of cable, make the cable soak the water after, water is difficult for getting into in the second connecting cylinder, thereby prevent that the cable from meeting water electric leakage.

The end parts of the first cable and the second cable are fixed in a threaded connection mode instead of an insulating tape bonding mode, so that the joint of the first cable and the second cable is good in sealing performance, and the problem that the joint of the first cable and the second cable is exposed due to the fact that colloid melts at high temperature is avoided.

Optionally, a first sealing ring is arranged on the inner wall of the first connecting cylinder, the first sealing ring is arranged at the end close to the first fixing cylinder, and the end, far away from the second fixing cylinder, of the second connecting cylinder abuts against the first sealing ring.

Through adopting above-mentioned technical scheme, support the tip that the second fixed cylinder was kept away from to the second connecting cylinder through setting up first sealing washer, further improve the sealing performance between first connecting cylinder and the second connecting cylinder, prevent that water from getting into the inner chamber of second connecting cylinder to prevent the tip contact water of first cable and second cable and electric leakage, improve the safety in utilization performance of cable.

Optionally, the second connecting cylinder comprises a threaded section and a fastening section, and the thickness from the inner ring to the outer ring of the fastening section gradually decreases towards the direction away from the second fixing cylinder; the outer diameter of the end part, far away from the threaded section, of the abutting section is smaller than the inner diameter of the first sealing ring, the outer diameter of the end part, close to the threaded section, of the abutting section is larger than the inner diameter of the first sealing ring, and the outer wall of the abutting section abuts against the inner annular wall of the first sealing ring.

Through adopting above-mentioned technical scheme, through the interior rampart that supports tight first sealing washer of outer wall that will support tight section, when making first connecting cylinder and second connect with threaded connection, the tip of second connecting cylinder can get into in the first sealing washer inner ring, and adopt and screw up first connecting cylinder and second connecting cylinder, make the inner ring mouth of first sealing washer support the outer wall of tight section tightly, adopt the mode of line tight face promptly, improve the tight power of supporting, thereby improve the tight effect of supporting, further improve the leakproofness of first connecting cylinder and second connecting cylinder junction.

Optionally, a positioning ring is fixed to the outer wall of the first cable, the positioning ring is fixed to one side, away from the second cable, of the first thread, and the positioning ring is used for abutting against the end, away from the first connecting ring, of the first fixing barrel.

Through adopting above-mentioned technical scheme, through setting up the holding ring, when making first fixed cylinder threaded connection on the second screw thread, the tip that first connecting cylinder was kept away from to first fixed cylinder supports tight holding ring and fixes a position, conveniently confirms the position of first fixed cylinder at first cable tip, and when first connecting portion and second connecting portion threaded connection, the holding ring can also restrict first connecting portion and slide on first cable outer wall.

Optionally, a second sealing ring is fixed to one side of the positioning ring, which faces the first thread, and the second sealing ring is used for sealing and connecting the positioning ring and the first fixing cylinder.

Through adopting above-mentioned technical scheme, the second sealing washer makes first fixed cylinder and holding ring support tight terminal surface and form sealedly, makes water be difficult for soaking from the threaded connection department of first fixed cylinder and first screw thread, improves the waterproof performance of cable.

Optionally, threaded connection has a fixed ring on the second screw thread, fixed ring is located the one side that the second connecting cylinder was kept away from to the fixed section of thick bamboo of second.

Through adopting above-mentioned technical scheme, after first connecting portion and second connecting portion threaded connection screw up, the tip that the second connecting cylinder was kept away from to solid fixed ring and the fixed section of thick bamboo of second is screwed up, prevents that not hard up from appearing in the fixed section of thick bamboo of second for first connecting portion and second connecting portion are connected stably.

Optionally, the fixed ring comprises a coaxially fixed inserting ring and a movable ring, the movable ring is in threaded connection with the second thread, and an annular groove for inserting the inserting ring into is formed in the end face, far away from the second connecting cylinder, of the second fixed cylinder.

Through adopting above-mentioned technical scheme, the grafting ring is pegged graft in interior annular groove, increases the creepage distance that water got into in the second fixed cylinder from solid fixed ring and the tight department of the fixed cylinder support of second, makes in water is difficult for getting into the second connecting cylinder, further improves the waterproof performance of cable.

Optionally, the first cable includes a first main body cable and a first hard sleeve coaxially fixed to an outer wall of an end portion of the first main body cable, the first hard sleeve is a hard plastic sleeve, a hard rubber sleeve or a hard metal sleeve, and the first thread is disposed on an outer wall of the first hard sleeve.

Through adopting above-mentioned technical scheme, the cable is for simple to operate, and the cable leads to producing to set up to have certain bending property. Through setting up first stereoplasm cover, and set up first screw thread on the outer wall of first stereoplasm cover for the cable is at the in-process of buckling, and first stereoplasm cover can not buckle, makes the leakproofness of the junction of first screw thread and first fixed cover outer wall keep good.

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

1. the first connecting part and the second connecting part seal the circumferential direction of the connecting part of the first cable and the second cable, so that the water resistance of the cable is improved, and the use safety of the cable is improved;

2. the positioning ring and the fixing ring are arranged, so that the connection stability of the first connecting part and the second connecting part is improved;

3. through setting up first stereoplasm cover, make the leakproofness of the junction of first screw thread and first fixed cover outer wall keep good.

Drawings

Fig. 1 is an overall schematic view of a water-blocking cable according to an embodiment of the present application.

Fig. 2 is a partial cross-sectional view of fig. 1 taken along line a-a (first and second cables not cut).

Description of reference numerals: 1. a first cable; 11. a first main cable; 12. a first hard cover; 121. a first thread; 2. a second cable; 21. a second main cable; 22. a second hard cover; 221. a second thread; 3. a connecting member; 31. a first connection portion; 311. a first fixed cylinder; 312. a first connecting cylinder; 313. a first through hole; 32. a second connecting portion; 321. a second fixed cylinder; 322. a second connecting cylinder; 3221. a threaded segment; 3222. a resisting section; 323. a second through hole; 4. a first seal ring; 5. a positioning ring; 6. a second seal ring; 7. a fixing ring; 71. a plug-in ring; 72. a movable ring; 73. and a ring groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses track traffic is with cable that blocks water. Referring to fig. 1, the water blocking cable for rail transit includes a first cable 1, a second cable 2, and a connecting member 3 connecting ends of the first and second cables 1 and 2.

Referring to fig. 2, the first cable 1 and the second cable 2 have the same structure, and the first cable 1 includes a first main cable 11 and a first hard cover 12 fixed to an outer wall near an end of the first main cable 11. The second cable 2 includes a second main body cable 21 and a second hard cover 22 fixed to an outer wall near an end of the second main body cable 21. The first hard sleeve 12 and the second hard sleeve 22 are made of the same material, and the first hard sleeve 12 and the second hard sleeve 22 are made of hard plastic, hard rubber or hard metal, so that the first hard sleeve 12 and the second hard sleeve 22 are rigid sleeves and are not easy to deform.

Referring to fig. 2, the connecting member 3 includes a first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 includes a first fixing cylinder 311 and a first connecting cylinder 312, the ends of which are coaxially fixed, and a first through hole 313 for accommodating the first cable 1 is formed through the first fixing cylinder 311 and the first connecting cylinder 312. The outer wall of the first hard sleeve 12 is provided with a first thread 121, the inner wall of the first fixed cylinder 311 is in threaded connection with the first hard sleeve 12 through the first thread 121, and the first fixed cylinder 311 and the first hard sleeve 12 are in sealed connection and fixed during threaded connection.

Referring to fig. 2, the second connecting portion 32 includes a second fixed cylinder 321 and a second connecting cylinder 322 having coaxially fixed ends, and the second fixed cylinder 321 and the second connecting cylinder 322 are provided with a second through hole 323 for accommodating the second cable 2. The outer wall of the second hard sleeve 22 is provided with a second thread 221, and the inner wall of the second fixed cylinder 321 is in threaded connection with the second hard sleeve 22 through the second thread 221, so that the second fixed cylinder 321 and the second hard sleeve 22 are fixedly connected in a sealing manner.

Referring to fig. 2, the inner wall of the first connecting cylinder 312 and the outer wall of the second connecting cylinder 322 are screwed, and the joint of the first cable 1 and the second cable 2 is located in the first connecting cylinder 312 and the second connecting cylinder 322, so that the cables have better water resistance.

Referring to fig. 2, the first seal ring 4 is fixed to the inner wall of the first connecting cylinder 312, and the outer annular wall of the first seal ring 4 is fixed to the end of the first connecting cylinder 312 near the first fixed cylinder 311. The second connecting cylinder 322 includes a threaded section 3221 and an abutting section 3222 for abutting against the first sealing ring 4. The fastening section 3222 and the threaded section 3221 are both annular, the outer wall of the threaded section 3221 is in threaded connection with the inner wall of the first connecting cylinder 312, one end of the threaded section 3221 is fixed to the second fixing cylinder 321, and the other end of the threaded section 3221 is fixed to the fastening section 3222.

Referring to fig. 2, the thickness from the inner ring to the outer ring of the fastening section 3222 gradually decreases toward the direction away from the second fixing cylinder 321, the outer diameter of the end portion of the fastening section 3222 away from the threaded section 3221 is smaller than the outer diameter of the end portion of the fastening section 3222 close to the threaded section 3221 and smaller than the inner diameter of the first sealing ring 4, and the outer diameter of the end portion of the fastening section 3222 close to the threaded section 3221 is larger than the inner diameter of the first sealing ring 4. When the first connecting cylinder 312 and the second connecting cylinder 322 are screwed and fixed, the outer wall of the abutting section 3222 abuts against the inner annular wall of the first sealing ring 4.

Referring to fig. 2, a positioning ring 5 is integrally formed on the outer wall of the first cable 1, and the positioning ring 5 is coaxially fixed on the side of the first hard sleeve 12 away from the second cable 2. A second sealing ring 6 is coaxially fixed on one side of the positioning ring 5 facing the first hard sleeve 12, and when the first fixing cylinder 311 is screwed on the first hard sleeve 12, the second sealing ring 6 abuts against the end part of the first fixing cylinder 311 far away from the first connecting cylinder 312 to form sealing.

Referring to fig. 2, the outer wall of the second hard sleeve 22 is connected with a fixing ring 7 in a threaded manner, the fixing ring 7 includes an inserting ring 71 and a movable ring 72, the movable ring 72 is connected with the outer wall of the second hard sleeve 22 in a threaded manner, the inserting ring 71 is coaxially fixed on one side of the movable ring 72 facing the second fixed cylinder 321, and one side of the second fixed cylinder 321 facing the movable ring 72 is provided with a ring groove 73 for the inserting ring 71 to insert. The movable ring 72 is used for screwing towards the second fixed cylinder 321 to limit the second fixed cylinder 321, and at the moment, the insertion ring 71 is inserted into the ring groove 73 to form sealing.

The fixed ring 7 and the holding ring 5 act together to limit the two ends of the first connecting part 31 and the second connecting part 32 deviating from each other, so that the first connecting part 31 and the second connecting part 32 are connected more stably, the second sealing ring 6 and the plug-in ring 71 are arranged, the sealing performance of the two ends of the first connecting part 31 and the second connecting part 32 deviating from each other is further improved, and the water resistance of the cable is improved.

The implementation principle of the water blocking cable for rail transit in the embodiment of the application is as follows: when the first cable 1 and the second cable 2 are connected and fixed, the first connecting piece 3 is connected to the first hard sleeve 12 in a threaded manner, and the positioning ring 5 abuts against the end face of the second fixing cylinder 321 to form sealing; the fixing ring 7 is screwed on the second hard sleeve 22, the second fixing ring 7 is screwed on the second hard sleeve 22, the first connecting cylinder 312 and the second connecting cylinder 322 are screwed and fixed, the fixing ring 7 is screwed in the direction of the second fixing cylinder 321, the positioning ring 5 and the fixing ring 7 clamp the first connecting portion 31 and the second connecting portion 32, and at this time, the outer wall of the abutting section 3222 abuts against the inner wall of the first sealing ring 4 to form sealing.

The junction of first cable 1 and second cable 2 is by first connecting portion 31 and second connecting portion 32 circumference seal, makes the cable have better water blocking performance, and the junction of first cable 1 and second cable 2 is difficult for leaking electricity after soaking, ensures the safety in utilization of cable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a track traffic is with cable that blocks water, includes first cable (1) and second cable (2) and with connecting piece (3) of first cable (1) and second cable (2) end connection, its characterized in that: the connecting piece (3) comprises a first connecting part (31) and a second connecting part (32), the first connecting part (31) comprises a first fixing barrel (311) and a first connecting barrel (312) which are coaxially fixed, and a first thread (121) which is used for being in threaded connection with the inner wall of the first fixing barrel (311) to form sealing is arranged on the outer wall of the end part of the first cable (1);

the second connecting part (32) comprises a second fixed cylinder (321) and a second connecting cylinder (322), and a second thread (221) for forming sealing with the second fixed cylinder (321) in a threaded connection mode is arranged on the outer wall of the end part of the second cable (2); the inner wall of the first connecting cylinder (312) is in threaded connection with the outer wall of the second connecting cylinder (322) to form a seal; the junction of the first cable (1) and the second cable (2) is located within a first connector barrel (312) and a second connector barrel (322).

2. A water-blocking cable for rail transit according to claim 1, wherein: the inner wall of the first connecting cylinder (312) is provided with a first sealing ring (4), the first sealing ring (4) is arranged at the end part close to the first fixed cylinder (311), and the end part, far away from the second fixed cylinder (321), of the second connecting cylinder (322) abuts against the first sealing ring (4).

3. A water-blocking cable for rail transit according to claim 2, wherein: the second connecting cylinder (322) comprises a threaded section (3221) and an abutting section (3222), and the thickness from the inner ring to the outer ring of the abutting section (3222) is gradually reduced towards the direction away from the second fixed cylinder (321); the outer diameter of the end part, far away from the threaded section (3221), of the abutting section (3222) is smaller than the inner diameter of the first sealing ring (4), the outer diameter of the end part, close to the threaded section (3221), of the abutting section (3222) is larger than the inner diameter of the first sealing ring (4), and the outer wall of the abutting section (3222) abuts against the inner annular wall of the first sealing ring (4).

4. A water-blocking cable for rail transit according to claim 1, wherein: first cable (1) outer wall is fixed with holding ring (5), holding ring (5) are fixed in first screw thread (121) and keep away from one side of second cable (2), holding ring (5) are used for supporting the tip that first fixed cylinder (311) kept away from first connecting ring tightly.

5. A water-blocking cable for rail transit according to claim 4, wherein: and a second sealing ring (6) is fixed on one side of the positioning ring (5) facing the first thread (121), and the second sealing ring (6) is used for sealing and connecting the positioning ring (5) and the first fixed cylinder (311).

6. A water-blocking cable for rail transit according to claim 1, wherein: threaded connection has solid fixed ring (7) on second screw thread (221), gu fixed ring (7) are located the one side that second connecting cylinder (322) were kept away from to second fixed cylinder (321).

7. A water-blocking cable for rail transit according to claim 6, wherein: fixed ring (7) including coaxial fixed grafting ring (71) and activity ring (72), activity ring (72) threaded connection is on second screw thread (221), the terminal surface that second connecting cylinder (322) was kept away from in the fixed section of thick bamboo of second (321) is offered and is supplied ring (73) that grafting ring (71) was pegged graft and is got into.

8. A water-blocking cable for rail transit according to claim 1, wherein: the first cable (1) comprises a first main body cable (11) and a first hard sleeve (12) coaxially fixed on the outer wall of the end portion of the first main body cable (11), the first hard sleeve (12) is a hard plastic sleeve, a hard rubber sleeve or a hard metal sleeve, and first threads (121) are arranged on the outer wall of the first hard sleeve (12).