Protective fastening device for laying optical cable on track board

Abstract

The utility model discloses a protective fastening device used for track board optical cable laying, which comprises protective covers, a connector and a steering connecting cover, the protective covers are sequentially arranged in a linear laying section of a cable, the steering connecting cover is arranged in a steering laying section of the cable, the protective covers are inserted into the steering protective cover, and the connector is connected with the steering protective cover. The connector is used for connecting two adjacent protective covers; meanwhile, an optical cable fixing assembly is further arranged in the connector, and optical cables and electric cables of various specifications are fixed in the cover through the optical cable fixing assembly; according to the utility model, the protective cover and the steering connecting cover form a protective device which continuously extends along the cable laying direction, so that the cable is isolated from the external environment, the influence of the external environment on the cable is reduced, and the service life of the cable is prolonged; and meanwhile, the cables can be fastened, the situation that the cables are loosened due to vibration when a train passes through the cables is avoided, and therefore stable clamping and fastening of the various cables are achieved, and safe operation of the train is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of optical cable fixing equipment, specifically to a protective fastening device for laying optical cables on track slabs. Background Technology

[0002] When laying cables or other wires on ballastless or ballasted tracks (also known as trackbeds or track slabs) in the railway or rail transit sector, to prevent cables from lifting or detaching from the ground and causing damage or affecting train safety when trains pass, simple saddle clamps are generally fixed on the track slab to limit the position of the cables. Although these clamps can limit the swing distance of the cables to a certain extent, there is always a certain amount of slack between them and the cables. The vibration of trains passing by will cause the cables to vibrate or slip due to this slack. This will not only cause the saddle clamps to loosen, but also cause the cables to wear out quickly, which is detrimental to improving train operation safety. Utility Model Content

[0003] In view of the shortcomings of existing technologies in terms of poor protection and fixation of cables, this utility model discloses a protective fastening device for laying optical cables on track slabs. This utility model can not only provide effective protection for cables and extend their service life, but also maximize the fastening and clamping of cables to ensure their stability, avoid cable wear caused by loosening, and reduce safety hazards in train operation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A protective fastening device for laying optical cables on track slabs includes several protective covers that cover the cables.

[0006] Connector, the connector being used to connect any two adjacent protective covers;

[0007] The optical cable fixing assembly is disposed inside the connector and is compatible with cables and optical fibers of different specifications, and clamps and fixes the optical fibers and optical fibers inside the protective cover;

[0008] Fastening components are provided on both the connector and the steering connection cover, and are used to fix them to the installation position.

[0009] Optionally, the protective fastening device also includes a turning connection cover installed at the cable turning section; the protective covers located on both sides of the cable turning section are respectively inserted into both ends of the turning connection cover, and the connection with the turning connection cover is achieved by the outer wall of the protective cover fitting against the inner wall of the turning connection cover.

[0010] Optionally, along the cable laying direction, both sides of the connector are provided with limiting grooves for inserting protective covers, and the connection between the connector and the protective cover is achieved by the inner wall of the limiting grooves fitting together with the outer wall of the protective cover.

[0011] Optionally, the connector is provided with an optical cable mounting slot and at least one cable mounting slot; the optical cable fixing assembly includes an optical cable fixing clip and at least one cable fixing clip, the optical cable fixing clip is disposed in the optical cable mounting slot, and each of the cable fixing clips is respectively disposed in each of the cable mounting slots; the optical cable fixing clip is provided with an optical cable buffer clamping assembly for adapting to different cable diameters, and the cable fixing clip is provided with a cable buffer clamping assembly for adapting to different cable diameters.

[0012] Optionally, the cable buffer clamping assembly includes a top buffer pad and a set of side wall buffer pads. The top buffer pad is disposed on the top inner wall of the cable fixing clip, and the side wall buffer pads are symmetrically disposed on the inner walls of the two sides of the cable fixing clip. The top buffer pad and the side wall buffer pads together form a cable clamping groove for fixing the cable.

[0013] Optionally, the sidewall buffer pad includes a first connecting piece and a second connecting piece. One end of the first connecting piece and the second connecting piece are smoothly connected to form a U-shaped structure by an arc-shaped buffer piece. The other end of the first connecting piece and the second connecting piece are integrally connected to the sidewall of the connecting housing. The first connecting piece and the second connecting piece are parallel to each other and inclined towards the top buffer pad side.

[0014] Optionally, the optical cable buffer clamping assembly includes a second top buffer pad and a set of second sidewall buffer pads. The second top buffer pad is disposed on the top inner wall of the optical cable fixing card, and the second sidewall buffer pads are symmetrically disposed on the inner walls of the two sides of the optical cable fixing card.

[0015] The second top buffer pad and the second side wall buffer pad together form a cable clamping groove for fixing the cable.

[0016] Optionally, the optical cable fixing clips and optical cable mounting slots, the cable fixing clips and cable mounting slots, and adjacent cable fixing clips are all connected by interlocking components.

[0017] Optionally, the locking assembly includes a locking groove and a locking strip that interlock with each other. The locking strip slides into the locking groove in the vertical direction and abuts against each other in the cable laying direction to limit movement. The cross-section of the locking groove and the locking strip is T-shaped or dovetail-shaped.

[0018] Optionally, along the direction perpendicular to the cable laying, both sides of the connector and the turning connection cover are provided with connecting ear plates adapted to the fastening assembly, and the connecting ear plates are provided with mounting holes; the fastening assembly includes a chemical anchor bolt with one end pre-embedded and fixed to the track plate, the other end of the chemical anchor bolt passing through the mounting hole, and a flat washer, a spring washer, an anti-theft nut and an anti-loosening nut are also fitted on this end.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This utility model includes a protective cover, a connector, and a turning connector. The protective cover is arranged sequentially along the straight section of the cable, and the turning connector is arranged in the turning section of the cable. The protective cover is inserted into the turning protective cover. The connector is used to connect two adjacent protective covers. At the same time, an optical cable fixing assembly is also provided in the connector, and various specifications of optical cables and electrical cables are fixed in the cover through the optical cable assembly.

[0021] Compared with the prior art, this utility model constitutes a protective device that extends continuously along the cable laying direction through a protective cover and a turning connection cover. Its cross-section is U-shaped. When in use, it is upside down and covers the cable directly above it, thereby isolating the cable from the external space. At the same time, adjacent protective covers are stably connected by connectors, and optical cable fixing components are also provided on the connectors. The optical cable fixing components apply force from the vertical direction, thereby firmly locking the optical cable and the electrical cable in the installation position.

[0022] This invention isolates the optical cable from the external environment through a protective cover, preventing damage to the cable's insulation from harsh conditions such as sunlight and rain, thus effectively extending its service life. Furthermore, the protective cover stably covers the cable surface, preventing drastic airflow changes inside when a train passes. This fundamentally reduces cable vibration caused by airflow, lowers the working pressure on the limiting device, and enhances its limiting effect on the cable.

[0023] Meanwhile, the fastening assembly locks the connector vertically, and then applies a locking force to the optical cable fixing clip and the cable fixing clip vertically through the connector. Therefore, from the perspective of the force direction, there is no component force along the cable axis, which ensures that the maximum force can be applied to the cable, improves the limiting effect on the cable and optical cable, and prevents them from loosening due to vibration when the train passes. This achieves stable clamping and fastening of various cables and reduces cable wear. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a protective fastening device for laying optical cables on track slabs according to the present invention.

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a schematic diagram of the steering connection cover structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the cable fixing clip structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the optical cable fixing clip structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the connector structure of this utility model;

[0031] Figure 7 This is an exploded view of the fastening component of this utility model;

[0032] Reference numerals: 1-Protective cover, 2-Connector, 3-Swivel connection cover, 4-Fastening assembly, 5-Limiting groove, 6-Optical cable installation groove, 7-Cable installation groove, 8-Optical cable fixing clip, 9-Cable fixing clip, 10-Optical cable buffer clamping assembly, 11-Cable buffer clamping assembly, 111-Top buffer pad, 112-Side wall buffer pad, 113-First connecting piece, 114-Second connecting piece, 115-Buffer piece, 101-Second top buffer pad, 102-Second side wall buffer pad, 12-Limiting slide groove, 13-Limiting slide bar, 14-Connecting ear plate, 15-Mounting hole, 41-Chemical anchor bolt, 42-Flat washer, 43-Spring washer, 44-Anti-theft nut, 45-Anti-loosening nut. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] Implementation Method 1

[0038] This embodiment, as a basic implementation of the present invention, discloses a protective fastening device for laying optical cables on track slabs, the specific structure of which is as follows: Figures 1 to 4As shown, the system includes several protective covers 1 and several turning connecting covers 3. The protective covers 1 have a U-shaped cross-section, appearing as a straight line when viewed from above. The turning protective covers 1 also have a U-shaped cross-section, appearing as a fan-shaped structure when viewed from above, with the central angle of the fan determined according to actual needs. During installation, all protective covers 1 are placed along the straight cable laying section, while the turning protective covers 1 are placed along the cable turning section. The protective fastening device also includes connectors 2, which are... Placed in the straight cable laying section, limit grooves 5 are provided on both sides of the connector 2 along the cable laying direction. During installation, the protective covers 1 on both sides of the connector 2 are inserted into the limit grooves 5. The end face of the protective cover 1 abuts against the end face of the limit groove 5 to achieve axial limitation. At the same time, the outer wall of the protective cover 1 and the inner wall of the limit groove 5 fit together and are fixed by friction, which improves the stability of the whole structure. Moreover, the above-mentioned structure is simple, and the operator can achieve stable connection of each protective cover 1 by simple plug-in. The operation is simple.

[0039] The inner wall size of the steering guard 1 is slightly larger than the outer size of the guard 1, so as to ensure that one end of the guard 1 can be smoothly inserted into the steering guard 1 during installation. At the same time, the outer wall of the guard 1 will fit against the inner wall of the steering guard 1 after insertion, thereby achieving a stable connection between the steering guard 1 and the guard 1, and improving the stability and reliability of the connection of the whole device.

[0040] Along the direction perpendicular to the cable laying, connecting lugs 14 are provided on both sides of the connector 2 and the steering guard 1. The connecting lugs 14 are provided with mounting holes 15. The protective fastening device also includes a fastening component 4, which includes a chemical anchor 41. During installation, one end of the chemical anchor 41 is pre-embedded in the track plate where the installation position is located, and the other end passes through the mounting hole 15. A flat washer 42, a spring washer 43, an anti-theft nut 44, and an anti-loosening nut are also fitted on this end. The anti-loosening nut can effectively improve the stability of the connection and prevent the connection from loosening due to vibration when the train passes. At the same time, the anti-theft nut 44 requires a special bolt to open, which can not only further improve the stability of the connection, but also effectively improve the anti-theft function and improve the security of the cable.

[0041] The connector 2 has an inverted U-shaped structure and a mounting groove. A support block is integrally connected to the middle of the mounting groove, thereby dividing the mounting groove into two symmetrical cable mounting grooves 7. The optical cable mounting groove 6 is located at the bottom of the support block. At the same time, multiple cable mounting grooves 7 can be divided into the mounting groove as needed. The support block forms an effective structural support in the middle of the limiting groove 5, preventing the structural strength of the middle part of the limiting groove 5 from decreasing due to excessive span, and improving the stability and reliability of the fixing plate.

[0042] The optical cable mounting groove 6 is provided with an optical cable fixing clip 8. An engaging assembly is provided between the optical cable mounting groove 6 and the optical cable fixing clip 8. The engaging assembly includes a limiting slide groove 12 and a limiting slide bar 13. Both the limiting slide groove 12 and the limiting slide bar 13 are arranged in the vertical direction. If the limiting slide bars 13 are provided on both sides of the optical cable fixing clip 8, then the limiting slide groove 12 is provided on both inner walls of the optical cable mounting groove 6. During installation, the limiting slide bar 13 on the optical cable fixing clip 8 is inserted into the limiting slide groove 12 from the vertical opening end of the fixing plate. At this time, the optical cable fixing clip 8 is simultaneously inserted into the optical cable mounting groove 6. The assembly of the two is completed by pushing the optical cable fixing clip 8 completely into the optical cable mounting groove 6. The cross-section of the limiting slide groove 12 and the limiting slide bar 13 can be T-shaped or dovetail-shaped.

[0043] In the axial direction of the cable laying, the limiting groove 12 and the limiting strip 13 abut against each other, thereby achieving limiting in the axial direction, preventing the optical cable fixing clip 8 from sliding when the cable slides axially, and improving the structural stability of the whole set of equipment.

[0044] Meanwhile, this utility model can quickly install and remove the optical cable fixing clip 8 by insertion. After installation, the open end of the fixing plate is sealed by the track plate, thereby realizing the 6-degree-of-freedom limitation of the optical cable fixing clip 8 and greatly improving the stability of the optical cable fixing clip 8.

[0045] The optical cable fixing clip 8 is also provided with an optical cable buffer clamping assembly 10. The optical cable buffer clamping assembly 10 includes a second top buffer pad 101 and a set of two second side wall buffer pads 102. The first top buffer pad 101 is disposed on the top inner wall of the optical cable fixing clip 8, and the second side wall buffer pads 102 are symmetrically disposed on the inner walls of the two sides of the optical cable fixing clip 8. Thus, the second top buffer pad 101 and the second side wall buffer pads 102 form an optical cable clamping groove for fixing the optical cable. When optical cables of different diameters are inserted into the optical cable clamping groove, they will cause different degrees of compression to the second top buffer pad 101 and the second side wall buffer pad 102. The above-mentioned buffer components will produce corresponding elastic relief, thereby maintaining a stable compression fixing force while adapting to different optical cables, and realizing the fixing of the optical cable.

[0046] One cable fixing clip 9 or multiple cable fixing clips 9 can be installed in the cable installation groove 7. When one cable fixing clip 9 is installed, the connection and assembly method between the cable fixing clip 9 and the cable installation groove 7 is the same as the connection and assembly method between the optical cable fixing clip 8 and the optical cable installation groove 6.

[0047] If multiple cable fixing clips 9 are provided, limit grooves 12 and limit strips 13 are respectively provided on both sides of the cable fixing clip 9. Limit grooves 12 and limit strips 13 are respectively provided on the two inner side walls of the cable mounting groove 7. Adjacent cable fixing clips 9 are connected by limit grooves 12 and limit strips 13. Cable fixing clips 9 and cable mounting groove 7 are connected by limit grooves 12 and limit strips 13. At the same time, the assembly method of the cable fixing clips 9 is the same as the assembly method of the optical cable fixing clips 8. As needed, the cross-section of the limit grooves 12 and limit strips 13 is T-shaped or dovetail-shaped.

[0048] The inner wall of the cable fixing clip 9 is also provided with a cable buffer clamping assembly 11. The cable buffer clamping assembly 11 includes a top buffer pad 111 and a set of two side wall buffer pads 112. The top buffer pad 111 is disposed on the top inner wall of the cable fixing clip 9, and the side wall buffer pads 112 are symmetrically disposed on the inner walls of the two sides of the cable fixing clip 9. The top buffer pad 111 and the side wall buffer pads 112 together form a cable clamping groove for fixing the cable.

[0049] The sidewall buffer pad 112 includes a first connecting piece 113 and a second connecting piece 114. One end of the first connecting piece 113 and the second connecting piece 114 are smoothly connected to each other in a U-shape by an arc-shaped buffer piece 115. The other ends of the first connecting piece 113 and the second connecting piece 114 are integrally connected to the sidewall of the connecting housing. At the same time, in order to optimize the stress structure of the sidewall buffer pad 112, the first connecting piece 113 and the second connecting piece 114 are parallel to each other and inclined towards the top buffer pad 111.

[0050] The biggest difference between the above structure and the traditional buffer pad is that the entire buffer pad box is set at an angle, so its highest point will be in a free state. Since it is not constrained, this type of buffer pad has a greater rebound. On the one hand, it can further adapt to cables with larger diameters and expand the application range of the equipment. On the other hand, the cable extrusion force it receives will also be an inclined force, so it will be decomposed into vertical and horizontal separation, realizing the decomposition of the force and helping to improve the equipment's adaptability to extrusion force.

[0051] Meanwhile, in order to improve the corrosion resistance of the entire equipment and the cable fastening ability, the connector 2 is made of SMC composite material, and the cable fixing clip 9 and the optical cable fixing clip 8 are both made of nylon material. Specifically, the nylon material can be PA6, PA66 or PA12.

Claims

1. A protective fastening device for laying optical cables on track slabs, characterized in that: Includes several protective covers (1) arranged sequentially along the cable laying direction; Connector (2), the connector (2) is used to connect any two adjacent protective covers (1) within a straight cable laying section; Optical cable fixing assembly, wherein the optical cable fixing assembly is disposed in the connector (2), and the optical cable fixing assembly is adapted to cables and optical cables of different specifications, and clamps and fixes the optical cables and cables in the protective cover (1); A turning connection cover (3) is provided at the cable turning laying section, and protective covers (1) located on both sides of the cable turning laying section are respectively inserted into the two ends of the turning connection cover (3). Fastening components (4) are provided on both the connector (2) and the steering connection cover (3), and are used to fix them to the installation position.

2. The protective fastening device for laying optical cables on track slabs according to claim 1, characterized in that: Along the cable laying direction, both sides of the connector (2) are provided with limiting grooves (5) for inserting the protective cover (1).

3. The protective fastening device for laying optical cables on track slabs according to claim 1, characterized in that: The connector (2) is provided with an optical cable mounting groove (6) and at least one cable mounting groove (7); the optical cable fixing assembly includes an optical cable fixing clip (8) and at least one cable fixing clip (9), the optical cable fixing clip (8) is disposed in the optical cable mounting groove (6), and each of the cable fixing clips (9) is respectively disposed in each of the cable mounting grooves (7); the optical cable fixing clip (8) is provided with an optical cable buffer clamping assembly (10) for adapting to different cable diameters, and the cable fixing clip (9) is provided with a cable buffer clamping assembly (11) for adapting to different cable diameters.

4. A protective fastening device for laying optical cables on track slabs according to claim 3, characterized in that: The cable buffer clamping assembly (11) includes a top buffer pad (111) and a set of side wall buffer pads (112). The top buffer pad (111) is disposed on the top inner wall of the cable fixing clip (9), and the side wall buffer pads (112) are symmetrically disposed on the inner walls of the two sides of the cable fixing clip (9). The top buffer pad (111) and the side wall buffer pads (112) together form a cable clamping groove for fixing the cable.

5. A protective fastening device for laying optical cables on track slabs according to claim 4, characterized in that: The sidewall buffer pad (112) includes a first connecting piece (113) and a second connecting piece (114). One end of the first connecting piece (113) and the second connecting piece (114) are smoothly connected to form a U-shaped structure by an arc-shaped buffer piece (115). The other ends of the first connecting piece (113) and the second connecting piece (114) are integrally connected to the sidewall of the connecting housing.

6. A protective fastening device for laying optical cables on track slabs according to claim 5, characterized in that: The first connecting piece (113) and the second connecting piece (114) are parallel to each other and tilted toward the top buffer pad (111).

7. A protective fastening device for laying optical cables on track slabs according to claim 3, characterized in that: The optical cable buffer clamping assembly (10) includes a second top buffer pad (101) and a set of second side wall buffer pads (102). The second top buffer pad (101) is disposed on the top inner wall of the optical cable fixing card (8), and the second side wall buffer pads (102) are symmetrically disposed on the inner walls of the two sides of the optical cable fixing card (8). The second top buffer pad (101) and the second side wall buffer pad (102) enclose and form an optical cable clamping groove for fixing the optical cable.

8. A protective fastening device for laying optical cables on track slabs according to claim 3, characterized in that: The optical cable fixing clip (8) and the optical cable mounting groove (6), the cable fixing clip (9) and the cable mounting groove (7), and adjacent cable fixing clips (9) are all connected by a locking assembly.

9. A protective fastening device for laying optical cables on track slabs according to claim 8, characterized in that: The locking assembly includes a locking groove (12) and a locking strip (13) that interlock with each other. The locking strip (13) slides and engages with the locking groove (12) in the vertical direction and abuts against the locking groove (12) in the cable laying direction. The cross-section of the locking groove (12) and the locking strip (13) is T-shaped or dovetail-shaped.

10. A protective fastening device for laying optical cables on track slabs according to claim 1, characterized in that: Along the direction perpendicular to the cable laying direction, both sides of the connector (2) and the turning connection cover (3) are provided with connecting ear plates (14) adapted to the fastening assembly (4), and the connecting ear plates (14) are provided with mounting holes (15); the fastening assembly (4) includes a chemical anchor bolt (41) with one end pre-embedded and fixed on the track plate, the other end of the chemical anchor bolt (41) passes through the mounting hole (15), and a flat washer (42), a spring washer (43), an anti-theft nut (44) and an anti-loosening nut (45) are also sleeved at this end.

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