Heat-resistant composite rail transit cable

Abstract

The utility model relates to the technical field of cables, in particular to a heat-resistant composite rail transit cable, which comprises a cable body and is used for power transmission, a protection mechanism is arranged on the cable body and is used for protecting the cable body, and the protection mechanism comprises a protection assembly and a cable core, the fixing assembly comprises a barrel shell installed at the two ends of the outer portion of the wrapping sleeve in a sleeving mode, a packing head installed in the barrel shell and arranged outside the barrel shell in a sleeving mode, a packing sleeve installed in the barrel shell and arranged on the packing head in a sleeving mode, and a barrel cover installed on the barrel shell in a threaded mode. The cable body comprises a main body assembly which comprises a plurality of cable cores fixed in a sheath; the protection assembly is fixed outside the cable body through the fixing assembly, so that the cable body is protected through the protection assembly; moreover, when the protection assembly is damaged in the use process, the damaged section of the protection assembly can be directly detached and replaced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a heat-resistant composite rail transit cable. Background Technology

[0002] Rail transit cables refer to wires and cables specifically used in rail transit systems. Based on their uses and structural characteristics, they can be divided into various types, such as single-core power cables, multi-core control cables, data cables, sensor cables, and jumper cables.

[0003] According to CN211150118U, a dynamic control composite fire-resistant cable for rail transit is disclosed. This technology discloses "a dynamic control composite fire-resistant cable for rail transit, including a composite cable core and, from the inside out, a wrapping layer, an oxygen barrier layer, a metal tape armor layer, and an outer sheath. The composite cable core includes a DC power line and at least one pair of control signal lines. The DC power line, from the inside out, includes a power line conductor, a power line fire-resistant layer, and a power line insulation layer. The control signal lines, from the inside out, include a control line core, a shielding layer, and a wrapping layer. The control line core, from the inside out, includes a control line conductor, a control line fire-resistant layer, and a control line insulation layer." This technology has the technical effects of "reducing mutual interference between dynamic control cable components while realizing power transmission and signal transmission, effectively improving the fire resistance of the composite cable, and greatly reducing cable laying space, reducing manpower consumption, and improving construction efficiency."

[0004] Conventional cables are covered with a protective sheath made of high-quality materials such as low-smoke halogen-free flame-retardant polyolefins. This protective sheath can effectively isolate the cable from damage caused by the external environment. However, once the outermost sheath of the cable is damaged, it must be replaced in time to ensure the safety and stability of the system. This means that replacing or repairing damaged cables usually requires power outages, which not only interrupts the continuity of power supply but may also interfere with normal operating procedures. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a heat-resistant composite rail transit cable, which features a protective component that is fixed to the outside of the cable body through a fixing component, thereby protecting the cable body through the protective component; furthermore, if the protective component is damaged during use, the damaged section of the protective component can be directly removed and replaced.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat-resistant composite rail transit cable, comprising a cable body for power transmission, wherein a protective mechanism is provided on the cable body for protecting the cable body, the protective mechanism comprising:

[0007] Protective components, including a sheath that wraps around the cable body;

[0008] The fixing assembly includes a cylindrical shell that is sleeved and installed on both ends of the outer side of the cover sleeve, a clamping head installed inside the cylindrical shell and sleeved on the outer side of the cylindrical shell, a clamping sleeve installed inside the cylindrical shell and sleeved on the clamping head, and a cylindrical cover threaded on the cylindrical shell.

[0009] Preferably, the cable body includes:

[0010] The main components include several cable cores fixed inside the sheath;

[0011] The support assembly includes a frame fixed in the center inside the sheath, several positioning clips fixed around the outer circumference of the frame, and the cable core installed inside the positioning clips.

[0012] Preferably, the support assembly further includes several thickened portions fixed to the outer circumference of the skeleton, with each thickened portion located between adjacent positioning clips.

[0013] Preferably, the support component further includes several hollow sections distributed circumferentially inside the skeleton.

[0014] Preferably, the protective component further includes retaining teeth on both the inner wall of one end of the cover and the outer wall of the other end.

[0015] Preferably, the fixing component further includes a plurality of slots circumferentially distributed on the cylindrical shell.

[0016] Preferably, the main component further includes an insulating layer wrapped around the skeleton, a filling layer between the skeleton and the insulating layer, and a shielding layer wrapped around the insulating layer.

[0017] Beneficial effects

[0018] This invention provides a heat-resistant composite rail transit cable. Compared with the prior art, it has the following advantages:

[0019] (1) By wrapping the cable body with a sleeve and putting the fixing components on both ends of the protection component, and then rotating and tightening the cylinder cover, the cylinder cover pushes the clamping sleeve inward and the clamping head is squeezed by the clamping sleeve, so that the clamping head clamps the cable body, thereby fixing the protection component to the outside of the cable body through the fixing components, thereby protecting the cable body through the protection component; and when the protection component is damaged during use, the damaged section of the protection component can be directly removed and replaced.

[0020] (2) The cable core inside the sheath is effectively stabilized by the support components, and the overall strength and compressive strength are significantly improved; the strength between the skeleton and the positioning clip and the positioning clip is strengthened by the thickened part, so as to avoid easy breakage; and, under the premise of ensuring the overall strength of the support components, the material can be reduced and the cost can be reduced by the hollow part. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is an exploded view of the present invention;

[0024] Figure 4 This is a schematic diagram of the support component in this utility model.

[0025] In the diagram: 1. Cable body; 11. Main component; 111. Sheath; 112. Cable core; 113. Filler layer; 114. Insulation layer; 115. Shielding layer; 12. Support component; 121. Skeleton; 122. Positioning clamp; 123. Thickened part; 124. Hollowed-out part; 2. Protective mechanism; 21. Protective component; 211. Covering sleeve; 212. Clamping teeth; 22. Fixing component; 221. Shell; 222. Tightening head; 223. Tightening sleeve; 224. Shell cover; 225. Slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution for a heat-resistant composite rail transit cable: a heat-resistant composite rail transit cable includes a cable body 1 for power transmission, and a protective mechanism 2 is provided on the cable body 1 for protecting the cable body 1. The protective mechanism 2 includes:

[0028] The protective component 21 includes a sheath 211 wrapped around the cable body 1;

[0029] The fixing component 22 includes a cylindrical shell 221 that is sleeved and installed on both ends of the outer side of the covering sleeve 211, a clamping head 222 installed inside the cylindrical shell 221 and sleeved on the outside of the cylindrical shell 221, a clamping sleeve 223 installed inside the cylindrical shell 221 and sleeved on the clamping head 222, and a cylindrical cover 224 threaded on the cylindrical shell 221.

[0030] In this embodiment, after wrapping the cable body 1 with a covering sleeve 211, the fixing components 22 are fitted onto both ends of the protective component 21, and then the cylinder cover 224 is rotated and tightened, so that the cylinder cover 224 pushes the clamping sleeve 223 inward, and the clamping sleeve 223 squeezes the clamping head 222, so that the clamping head 222 clamps the cable body 1, thereby fixing the protective component 21 to the outside of the cable body 1 through the fixing components 22, thus protecting the cable body 1 through the protective component 21; and, if the protective component 21 is damaged during use, the damaged section of the protective component 21 can be directly removed and replaced.

[0031] Specifically, the cable body 1 includes:

[0032] The main component 11 includes several cable cores 112 fixed inside the sheath 111;

[0033] The support assembly 12 includes a frame 121 fixed in the center of the inner side of the sheath 111, a plurality of positioning clips 122 fixedly distributed around the outer circumference of the frame 121, and the cable core 112 is installed inside the positioning clips 122.

[0034] In this embodiment, the support component 12 effectively stabilizes the cable core 112 inside the sheath 111 and significantly improves the overall strength and compressive strength.

[0035] Specifically, the support component 12 also includes a number of thickened portions 123 that are fixed to the outer circumference of the frame 121, and each thickened portion 123 is located between adjacent positioning clips 122.

[0036] In this embodiment, the thickened portion 123 is used to strengthen the frame 121 and the positioning clip 122, as well as the strength between the positioning clip 122, to prevent easy breakage.

[0037] Specifically, the support component 12 also includes several hollowed-out sections 124 that are distributed circumferentially inside the skeleton 121.

[0038] In this embodiment, while ensuring the overall strength of the support component 12, the hollowed-out portion 124 can reduce the amount of material used and lower the cost.

[0039] Specifically, the protective component 21 also includes retaining teeth 212 that are opened on the inner wall of one end and the outer wall of the other end of the cover sleeve 211.

[0040] In this embodiment, after the sheath 211 is wrapped around the cable body 1, the two ends are locked together by the locking teeth 212 to prevent the two ends from easily coming apart.

[0041] Specifically, the fixing component 22 also includes several slots 225 that are circumferentially distributed on the cylindrical shell 221.

[0042] In this embodiment, when the clamping head 222 is squeezed by the clamping sleeve 223, it has a convergent contraction space through the slot 225.

[0043] Specifically, the main component 11 also includes an insulating layer 114 wrapped around the skeleton 121, a filling layer 113 filling the space between the skeleton 121 and the insulating layer 114, and a shielding layer 115 wrapped around the insulating layer 114.

[0044] The working principle and usage process of this utility model are as follows: First, by wrapping the cable body 1 with a sheath 211, and putting the fixing components 22 on both ends of the protective component 21, the cylinder cover 224 is rotated and tightened, causing the cylinder cover 224 to push the clamping sleeve 223 inward, and the clamping sleeve 223 squeezes the clamping head 222, causing the clamping head 222 to clamp the cable body 1, thereby fixing the protective component 21 to the outside of the cable body 1 through the fixing components 22, thus protecting the cable body 1 through the protective component 21; and when the protective component 21 is damaged during use, the damaged section of the protective component 21 can be directly removed and replaced; and the cable core 112 inside the sheath 111 is effectively stabilized by the support component 12, and the overall strength and compressive strength are significantly improved.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-resistant composite rail transit cable, characterized in that: Includes a cable body (1) and is used for power transmission. The cable body (1) is provided with a protective mechanism (2) for protecting the cable body (1). The protective mechanism (2) includes: The protective component (21) includes a sheath (211) wrapped around the cable body (1); The fixing component (22) includes a cylindrical shell (221) sleeved and installed on both ends of the outer side of the covering sleeve (211), a clamping head (222) installed inside the cylindrical shell (221) and sleeved on the outside of the cylindrical shell (221), a clamping sleeve (223) installed inside the cylindrical shell (221) and sleeved on the clamping head (222), and a cylindrical cover (224) threaded on the cylindrical shell (221).

2. The heat-resistant composite rail transit cable according to claim 1, characterized in that: The cable body (1) includes: The main component (11) includes several cable cores (112) fixed inside the sheath (111); The support assembly (12) includes a frame (121) fixed in the center inside the sheath (111), a plurality of positioning clips (122) fixed in a circular distribution outside the frame (121), and the cable core (112) is installed inside the positioning clips (122).

3. The heat-resistant composite rail transit cable according to claim 2, characterized in that: The support component (12) also includes several thickened portions (123) fixed to the outer circumference of the frame (121), and each thickened portion (123) is located between adjacent positioning clips (122).

4. The heat-resistant composite rail transit cable according to claim 2, characterized in that: The support component (12) also includes several hollowed-out sections (124) that are circumferentially distributed inside the skeleton (121).

5. The heat-resistant composite rail transit cable according to claim 1, characterized in that: The protective component (21) also includes retaining teeth (212) on both the inner wall of one end and the outer wall of the other end of the covering sleeve (211).

6. The heat-resistant composite rail transit cable according to claim 1, characterized in that: The fixing component (22) also includes a number of slots (225) that are circumferentially distributed on the cylindrical shell (221).

7. The heat-resistant composite rail transit cable according to claim 2, characterized in that: The main component (11) also includes an insulating layer (114) wrapped around the skeleton (121), a filling layer (113) filling the space between the skeleton (121) and the insulating layer (114), and a shielding layer (115) wrapped around the insulating layer (114).

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