Rail transit cable with high tensile strength

Abstract

The utility model discloses a rail transit cable with strong tensile capability, which comprises a cable body, the cable body comprises a tensile rope, the outer surface of the tensile rope is uniformly provided with three cable conductors, the outer surface of each cable conductor is sequentially provided with a filling layer, an insulating layer, a flame-retardant layer, a tensile layer, a liquid drainage layer, a waterproof layer and an outer protection layer, and the outer surface of each cable conductor is provided with an insulating layer, a flame-retardant layer, a tensile layer, a liquid drainage layer, a waterproof layer and an outer protection layer. A liquid storage cavity is formed in the liquid drainage layer, the liquid storage cavity is connected with the waterproof layer through a plurality of liquid guide grooves, a liquid drainage opening is formed in the lower end face of the cable body, a plug-in mechanism is installed at one end of the cable body, and a connecting mechanism is installed at the other end of the cable body. Compared with the prior art, the cable has the advantages that the waterproof and tensile effects are good, water vapor in the cable body can be discharged, the service life of the cable body is prolonged, the two cable bodies can be conveniently spliced, and the laying progress is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a rail transit cable with strong tensile strength. Background Art

[0002] Rail transit refers to a type of transportation vehicle or transportation system in which operating vehicles need to travel on specific tracks. The most typical rail transit is a railway system consisting of traditional trains and standard railways. Common rail transit includes traditional railway subways, light rails and trams. New rail transit includes magnetic levitation rail systems, monorail systems and automatic passenger rapid transit systems. In China's national standards, urban rail transit is defined as "a general term for fast and large-volume public transportation that usually uses electricity as power and adopts wheel-rail operation. Therefore, cables are needed in rail transit to ensure the stable operation of the circuit.

[0003] In the prior art, the utility model patent with publication number CN212084713U discloses a rail transit cable, which includes a cable and an insulating layer, the insulating layer covers the cable, and also includes a protective layer, the protective layer includes a wear-resistant layer, a glass fiber rat-proof layer and a main protective layer, the wear-resistant layer covers the insulating layer, the glass fiber rat-proof layer covers the wear-resistant layer, and the main protective layer covers the glass fiber rat-proof layer. The application has the effect of increasing the service life of the cable.

[0004] However, during the construction of the above-mentioned cables, it is inevitable that part of the cable surface will be damaged, resulting in water ingress. Although there are multiple layers of structure inside the cable, the moisture cannot be discharged for a long time inside the cable, causing corrosion of these structures, and then damaging the cable, which can easily cause the cable to bend and crack, seriously affecting the service life of the cable. At present, most of them are spliced ​​by wrapping insulating tape, and the splicing process is cumbersome, which affects the progress of cable laying. Therefore, it does not meet the existing needs. In this regard, we propose a rail transit cable with strong tensile strength. Utility Model Content

[0005] The purpose of the utility model is to provide a rail transit cable with strong tensile strength, so as to solve the problem proposed in the above-mentioned background technology that the above-mentioned cable will inevitably cause partial skin damage during construction, resulting in water ingress. Although there are multi-layer structures inside the cable, the moisture cannot be discharged for a long time inside the cable, resulting in corrosion of these structures, and then damaging the cable, which is easy to cause the cable to bend and crack, seriously affecting the service life of the cable. At present, most of them are spliced ​​by winding insulating tape, and the splicing process is cumbersome, affecting the progress of cable laying, etc.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rail transit cable with strong tensile strength, comprising a cable body, the cable body comprising a tensile rope, the outer surface of the tensile rope is evenly arranged with three cable wires, the cable wire, the outer surface of the cable wire is sequentially provided with a filling layer, an insulating layer, a flame retardant layer, a tensile layer, a drainage layer, a waterproof layer and an outer protective layer, the interior of the drainage layer is provided with a liquid storage cavity, the liquid storage cavity is connected to the waterproof layer through a plurality of liquid guide grooves, the lower end surface of the cable body is provided with a drainage port, one end of the cable body is installed with a plug-in mechanism, the other end of the cable body is installed with a connecting mechanism, and every two cable bodies are spliced ​​and connected by the plug-in mechanism and the connecting mechanism.

[0007] Preferably, the plug-in mechanism comprises a socket, a rear surface of the socket is fixedly connected to the front end surface of the cable body, slots are provided on both sides of the outer surface of the socket, and a fixing ring is sleeved on the outer surface of the socket, and the fixing ring is made of rubber.

[0008] Preferably, the connecting mechanism includes a fixing seat, the front end face of the fixing seat is fixedly connected to the rear end face of the cable body, the rear end face of the fixing seat is provided with a slot, the rear of the inner wall of the slot is provided with an annular groove, and the annular groove is adapted to the fixing ring.

[0009] Preferably, threaded holes are provided on both sides of the outer surface of the fixing seat, the inner sides of the threaded holes are connected with screw rods through threads, and clamping blocks are provided on the opposite sides of the two screw rods, and the clamping blocks are rotatably connected to the screw rods through bearings.

[0010] Preferably, the slot is connected to the threaded hole via a receiving groove, the card block is adapted to the card groove, and the size of the card block is smaller than the size of the receiving groove.

[0011] Preferably, the anti-tension rope is made of aramid composite fiber material, the anti-tension layer is made of steel wire material, and the anti-tension layer is laid on the outside of the flame retardant layer.

[0012] Preferably, the upper end of the liquid discharge port extends to the interior of the liquid storage cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a tensile-resistant rope and a tensile-resistant layer. The tensile-resistant layer is made of a steel wire material, which has excellent tensile resistance. The tensile-resistant rope is made of an aramid composite material with great mechanical strength, which can avoid the cable body from being broken due to excessive tensile force. In addition, the utility model is provided with a waterproof layer, a drainage layer, a liquid storage cavity, a liquid guide groove, and a liquid drainage port. The waterproof layer can prevent water vapor from corroding the inside of the cable body. The water vapor can discharge the moisture outside the waterproof layer through the liquid guide groove, and the liquid in the liquid storage cavity can be discharged through the liquid drainage port to prevent the cable body from cracking and water ingress, thereby doubly ensuring the tensile resistance of the cable body. The utility model has good waterproof and tensile-resistant effects, can discharge water vapor in the cable body, and improves the service life of the cable body.

[0015] 2. The utility model is provided with a plug-in mechanism and a connecting mechanism. The socket on the rear end face of one cable body is inserted into the slot of the fixing seat on the front end face of the other cable body. The fixing ring is squeezed until the fixing ring is stuck in the inner side of the annular groove. The fixing ring returns to its original state, so that the socket can be firmly stuck in the inner side of the slot. Then, by rotating the screw rod, the screw rod moves on the inner side of the threaded hole, driving the clamping block to move and be stuck in the inner side of the clamping groove, so as to perform secondary position limiting on the socket. The utility model facilitates the splicing of two cable bodies and improves the laying progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a top sectional view of the utility model as a whole;

[0018] Figure 3 It is a partial structural schematic diagram of the connection mechanism of the utility model;

[0019] Figure 4 It is a cross-sectional view of the cable body of the utility model;

[0020] Figure 5 It is a schematic diagram of the local structure of the liquid drainage layer of the utility model.

[0021] In the figure: 1. cable body; 101. tensile rope; 102. filling layer; 103. cable line; 104. insulating layer; 105. flame retardant layer; 106. tensile layer; 107. drainage layer; 108. waterproof layer; 109. outer sheath; 110. liquid storage cavity; 111. liquid guide groove; 112. drainage port; 2. plug-in mechanism; 201. socket; 202. card slot; 203. fixing ring; 3. connecting mechanism; 301. fixing seat; 302. screw; 303. threaded hole; 304. storage groove; 305. annular groove; 306. card block; 307. slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] like Figure 1 and Figure 4 As shown, an embodiment of the utility model is provided: a rail transit cable with strong tensile strength, including a cable body 1, the cable body 1 includes a tensile rope 101, and three cable lines 103 are evenly arranged on the outer surface of the tensile rope 101. The cable line 103, the outer surface of the cable line 103 is sequentially provided with a filling layer 102, an insulating layer 104, a flame retardant layer 105, a tensile layer 106, a drainage layer 107, a waterproof layer 108 and an outer protective layer 109, the drainage layer 107 is provided with a liquid storage cavity 110 inside, the liquid storage cavity 110 is connected to the waterproof layer 108 by a plurality of liquid guide grooves 111, and a drainage port 112 is provided on the lower end surface of the cable body 1, a plug-in mechanism 2 is installed at one end of the cable body 1, and a connecting mechanism 3 is installed at the other end of the cable body 1, and every two cable bodies 1 are spliced ​​and connected by the plug-in mechanism 2 and the connecting mechanism 3.

[0024] like Figure 2 and Figure 3 As shown, the plug-in mechanism 2 includes a socket 201, the rear surface of the socket 201 is fixedly connected to the front end surface of the cable body 1, and the two sides of the outer surface of the socket 201 are provided with card slots 202. The outer surface of the socket 201 is sleeved with a fixing ring 203, and the fixing ring 203 is made of rubber;

[0025] The connecting mechanism 3 includes a fixing seat 301, the front end face of the fixing seat 301 is fixedly connected to the rear end face of the cable body 1, the rear end face of the fixing seat 301 is provided with a slot 307, the rear of the inner wall of the slot 307 is provided with an annular groove 305, the annular groove 305 is adapted to the fixing ring 203, the socket 201 on the rear end face of one cable body 1 is inserted into the slot 307 of the fixing seat 301 on the front end face of the other cable body 1, the fixing ring 203 is squeezed until the fixing ring 203 is stuck in the inner side of the annular groove 305, and the fixing ring 203 returns to its original state, so that the socket 201 can be firmly stuck in the inner side of the slot 307;

[0026] Threaded holes 303 are provided on both sides of the outer surface of the fixing seat 301, and the inner sides of the threaded holes 303 are connected with screw rods 302 through threads, and blocks 306 are provided on the opposite sides of the two screw rods 302, and the blocks 306 are rotatably connected to the screw rods 302 through bearings; the slot 307 is connected to the threaded hole 303 through the receiving groove 304, and the blocks 306 are adapted to the groove 202, and the size of the blocks 306 is smaller than the size of the receiving groove 304. The screw rod 302 can be rotated to move the screw rod 302 on the inner side of the threaded hole 303, drive the blocks 306 to move, and be stuck in the inner side of the groove 202, so as to perform secondary limit on the socket 201, or drive the blocks 306 to leave the inner side of the groove 202 and retract to the inner side of the receiving groove 304, so as to release the limit on the socket 201.

[0027] like Figure 5 As shown, the tensile rope 101 is made of aramid composite fiber material, the tensile layer 106 is made of steel wire material, and the tensile layer 106 is laid on the outside of the flame retardant layer 105; the upper end of the drain port 112 extends to the inside of the liquid storage cavity 110, the tensile layer 106 is made of steel wire material, and the steel wire material has excellent tensile resistance, and the tensile rope 101 is made of aramid composite material with great mechanical strength, which can further avoid excessive tensile force causing the cable body 1 to break, and the liquid in the liquid storage cavity 110 can be discharged through the drain port 112.

[0028] Working principle: When the rail transit cable with strong tensile strength is in use, it is provided with a tensile rope 101 and a tensile layer 106. The tensile layer 106 is made of steel wire material, which has excellent tensile resistance. The tensile rope 101 is made of an aramid composite material with great mechanical strength, which can avoid excessive tensile force from causing the cable body 1 to break. In addition, it is provided with a waterproof layer 108, a drainage layer 107, a liquid storage cavity 110, a liquid guide groove 111, and a liquid drainage port 112. The waterproof layer 108 can prevent water vapor from corroding the inside of the cable body 1. Water vapor can discharge moisture on the outside of the waterproof layer 108 through the liquid guide groove 111, and the liquid in the liquid storage cavity 110 can be discharged through the liquid drainage port 112, so as to prevent the cable body 1 from cracking and water ingress, thereby doubly ensuring the tensile strength of the cable body 1. , and by providing a plug-in mechanism 2 and a connecting mechanism 3, the socket 201 on the rear end face of one cable body 1 is inserted into the slot 307 of the fixing seat 301 on the front end face of the other cable body 1, and the fixing ring 203 is squeezed until the fixing ring 203 is stuck in the inner side of the annular groove 305, and the fixing ring 203 is restored to its original state, so that the socket 201 can be firmly stuck in the inner side of the slot 307, and then by rotating the screw rod 302, the screw rod 302 moves on the inner side of the threaded hole 303, driving the clamping block 306 to move and be stuck in the inner side of the clamping groove 202, and the socket 201 is limited for the second time. The utility model has good waterproof and tensile resistance effects, can discharge water vapor in the cable body 1, and improves the service life of the cable body 1, and is convenient for splicing two cable bodies 1, thereby improving the laying progress.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A rail transit cable with strong tensile strength, comprising a cable body (1), characterized in that: The cable body (1) comprises a tensile rope (101), three cables (103) are evenly arranged on the outer surface of the tensile rope (101), the outer surface of the cables (103) is sequentially provided with a filling layer (102), an insulating layer (104), a flame retardant layer (105), a tensile layer (106), a drainage layer (107), a waterproof layer (108) and an outer protective layer (109), the drainage layer (107) is provided with a liquid storage cavity (110) inside, the liquid storage cavity (110) and the waterproof layer (108) are connected via a plurality of liquid guide grooves (111), the lower end surface of the cable body (1) is provided with a drainage port (112), one end of the cable body (1) is provided with a plug-in mechanism (2), the other end of the cable body (1) is provided with a connecting mechanism (3), and every two cable bodies (1) are spliced ​​and connected via the plug-in mechanism (2) and the connecting mechanism (3).

2. A rail transit cable with strong tensile strength according to claim 1, characterized in that: The plug-in mechanism (2) comprises a socket (201), the rear surface of the socket (201) is fixedly connected to the front end surface of the cable body (1), the outer surface of the socket (201) is provided with card slots (202) on both sides, the outer surface of the socket (201) is sleeved with a fixing ring (203), and the fixing ring (203) is made of rubber.

3. A rail transit cable with strong tensile strength according to claim 2, characterized in that: The connecting mechanism (3) comprises a fixing seat (301), the front end face of the fixing seat (301) is fixedly connected to the rear end face of the cable body (1), the rear end face of the fixing seat (301) is provided with a slot (307), the rear of the inner wall of the slot (307) is provided with an annular groove (305), and the annular groove (305) is adapted to the fixing ring (203).

4. A rail transit cable with strong tensile strength according to claim 3, characterized in that: Threaded holes (303) are provided on both sides of the outer surface of the fixing seat (301), the inner sides of the threaded holes (303) are connected to screw rods (302) via threads, and clamping blocks (306) are provided on opposite sides of the two screw rods (302), and the clamping blocks (306) are rotatably connected to the screw rods (302) via bearings.

5. A rail transit cable with strong tensile strength according to claim 4, characterized in that: The slot (307) is connected to the threaded hole (303) via a receiving groove (304), the clamping block (306) is adapted to the clamping groove (202), and the size of the clamping block (306) is smaller than the size of the receiving groove (304).

6. A rail transit cable with strong tensile strength according to claim 1, characterized in that: The anti-tension rope (101) is made of aramid composite fiber material, the anti-tension layer (106) is made of steel wire material, and the anti-tension layer (106) is laid outside the flame retardant layer (105).

7. A rail transit cable with strong tensile strength according to claim 1, characterized in that: The upper end of the liquid discharge port (112) extends to the interior of the liquid storage chamber (110).

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