Vibration reduction four-in four-out optical cable connector box for railway

Abstract

The utility model discloses a railway vibration damping four-in four-out optical cable joint box, which comprises a shell assembly, a main frame body, a fiber splice tray and a buffer vibration damping gasket, first accommodating grooves are formed in two axial ends of an inner cavity of the shell assembly, a second accommodating groove is formed between the two first accommodating grooves, the main frame body is arranged in the shell assembly, and the buffer vibration damping gasket is arranged in the shell assembly. The shell assembly comprises a first accommodating groove and a second accommodating groove, two ends of the first accommodating groove are bent to form a bracket plug for penetrating an optical cable, the bracket plug is embedded in the first accommodating groove, the fiber melting disc is arranged on the main frame body and is accommodated in the second accommodating groove, and the buffer anti-vibration pad is arranged on the frame body between the bracket plug and the fiber melting disc to completely isolate the main frame body from the shell assembly. Through the above mode, the vibration-damping four-in four-out optical cable joint box for the railway can realize'four-in four-out 'multichannel transmission, meets the requirements of railway and subway optical cable transmission, isolates the main frame body from the shell through the vibration-damping gasket, reduces vibration, avoids frequent replacement, improves reliability, prolongs the service life, and reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of communication junction box technology, and in particular to a vibration-damping four-in-four-out optical cable junction box for railway use. Background Technology

[0002] In railway and subway communication systems, junction boxes are widely used for the connection and protection of fiber optic communication lines. These scenarios have extremely high requirements for the stability and reliability of communication, because communication interruption may lead to serious consequences such as train operation failure and signal errors.

[0003] Traditional junction boxes have the following drawbacks:

[0004] Limited number of access points: The number of optical cable inlets and outlets is relatively small, which can usually only meet the access needs of a small number of optical cables, limiting the scalability and flexibility of the communication system and failing to meet the needs of multi-channel transmission.

[0005] Insufficient vibration resistance: The lack of a vibration structure makes it impossible to effectively isolate external vibrations, which can cause internal components of the junction box to become loose, broken, or have poor contact due to vibration, thus affecting signal transmission.

[0006] High cost: The junction boxes are of poor quality and require frequent replacement, resulting in high manufacturing and maintenance costs. Utility Model Content

[0007] The main technical problem solved by this utility model is to provide a vibration-damping four-in-four-out optical cable junction box for railways, which can realize "four-in-four-out" multi-channel transmission, meet the optical cable transmission needs of railways and subways, and reduce vibration by isolating the main frame and the shell through vibration-damping pads, avoiding frequent replacement, improving reliability and service life, and reducing costs.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a vibration-damping four-in-four-out optical cable junction box for railways, comprising:

[0009] The housing assembly has a first receiving groove formed at both ends along the axial direction of its inner cavity, and a second receiving groove formed between the two first receiving grooves;

[0010] The main frame is located inside the housing assembly, and its two ends are bent to form bracket plugs for threading optical cables. The bracket plugs are embedded in the first receiving groove.

[0011] The fiber melting tray is located on the main frame and housed in the second receiving slot;

[0012] The buffer and vibration damping pads are located on the frame between the support end and the fiber optic tray, completely isolating the main frame from the housing assembly.

[0013] In a preferred embodiment of this utility model, the housing assembly includes an upper housing and a lower housing, with corresponding housing fixing holes around the perimeter of the upper and lower housings, and the upper and lower housings are connected by fastening bolts.

[0014] In a preferred embodiment of this utility model, a PVC waterproof sealing strip is provided at the joint surface of the upper shell and the lower shell.

[0015] In a preferred embodiment of the present invention, the first receiving groove and the second receiving groove are separated by a stepped transition.

[0016] In a preferred embodiment of the present invention, each bracket plug includes four sets of optical cable perforations arranged in a matrix, and each optical cable perforation is provided with a reinforcing core fixing post.

[0017] In a preferred embodiment of the present invention, an optical cable locking hose clamp is also provided at the optical cable through-hole of the bracket plug.

[0018] In a preferred embodiment of this utility model, the buffer and vibration damping pad is a nitrile fluororubber pad.

[0019] The beneficial effects of this utility model are:

[0020] Adopting a four-in-four-out multi-channel structure, it can accommodate multiple optical cables simultaneously. Vibration damping pads completely isolate the main frame from the shell, effectively reducing vibration transmission. It can meet the high-density optical cable transmission requirements of railways, subways, and other environments with strict vibration resistance requirements. While ensuring product reliability and service life, it reduces manufacturing and maintenance costs, resulting in significant economic benefits and market promotion value. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of the vibration-damping four-in-four-out optical cable junction box for railways according to this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the railway vibration-damping four-in-four-out optical cable junction box housing with the present invention opened;

[0024] Figure 3 This is a schematic diagram of the structure of the railway vibration-damping four-in-four-out optical cable junction box of this utility model, with the upper shell removed;

[0025] Figure 4 This is a schematic diagram of the internal cavity structure of the vibration-damping four-in-four-out optical cable junction box for railways according to this utility model.

[0026] Figure 5 This is an exploded view of the internal structure of the railway vibration-damping four-in-four-out optical cable junction box of this utility model;

[0027] The components in the attached diagram are labeled as follows:

[0028] 1. Upper housing, 2. Lower housing, 3. Housing fixing holes, 4. PVC waterproof sealing strip, 5. First receiving groove, 6. Second receiving groove.

[0029] 7. Main frame, 8. Fiber optic cable tray, 9. Support plug, 10. Optical cable perforation, 11. Reinforcing core fixing post, 12. Buffer and vibration damping pad, 13. Waterproof sealing ring, 14. Optical cable locking hose clamp. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 5 This utility model relates to a preferred embodiment of a vibration-damping four-in-four-out optical cable junction box for railways.

[0033] The railway vibration-damping four-in-four-out optical cable junction box includes a housing assembly, a main frame and a fiber optic cable tray located inside the housing assembly.

[0034] Specifically, the first part is the housing assembly, which includes an upper housing 1 and a lower housing 2. The upper housing 1 and the lower housing 2 are provided with corresponding housing fixing holes 3 around their perimeters. The upper housing 1 and the lower housing 2 are connected by fastening bolts to ensure the stability and reliability of the housing.

[0035] Furthermore, a PVC waterproof sealing strip 4 is provided at the joint surface of the upper shell 1 and the lower shell 2 for sealing. This sealing strip is reusable. The PVC waterproof sealing strip 4 has good elasticity. When the upper shell and the lower shell are connected by fastening bolts, the sealing strip is squeezed and undergoes elastic deformation, filling the tiny gap between the joint surfaces of the upper shell and the lower shell, preventing moisture, dust, etc. from entering the interior of the shell from the joint surface, thus achieving a good sealing effect.

[0036] Furthermore, a waterproof sealing ring 13 is used to seal the space between the housing and the internal optical cable. The sealing ring fits tightly against the contact surface of the housing and the optical cable to form a sealing barrier and prevent moisture from seeping in through the gap between the optical cable and the housing.

[0037] The inner cavity of the housing assembly forms a first receiving groove 5 at both ends along the axial direction, and a second receiving groove 6 is formed between the two first receiving grooves 5. The first receiving groove 5 and the second receiving groove 6 are separated by a stepped transition. The first receiving groove 5 and the second receiving groove 6 are respectively used to accommodate the optical cable sealing and fixing part and the optical cable splicing part.

[0038] Secondly, there are the main frame 7 and the fiber fusion tray 8, which are located inside the housing assembly. The two ends of the main frame 7 are bent to form support plugs 9 for threading optical cables. The support plugs 9 are embedded in the first receiving groove 5, and the fiber fusion tray 8 is located on the main frame 7 and is received in the second receiving groove 6.

[0039] Furthermore, each bracket plug 9 includes four sets of optical cable perforations 10 arranged in a matrix for orderly threading of optical cables, avoiding tangling and interference between the optical cables. Each optical cable perforation 10 is provided with a reinforcing core fixing post 11, which can fix the reinforcing core in the optical cable and enhance the tensile strength and stability of the optical cable.

[0040] Furthermore, the optical cable clamp 14 is also provided at the optical cable perforation 10 of the bracket plug 9, which can apply a certain pressure to the optical cable, so that the optical cable and the perforation form a tight contact, thereby achieving a firm fixation of the optical cable.

[0041] Finally, there is the buffer damping pad 12, which is located on the frame between the support plug 9 and the fiber fusion tray 8. It completely isolates the main frame 7 from the shell assembly, plays a damping and vibration reduction role, prevents the shell from transmitting vibration to the support, and protects the internal components from vibration.

[0042] Preferably, the buffer damping pad 12 is a nitrile fluororubber pad, which has excellent elasticity and damping properties, and can effectively absorb and dissipate some energy, reducing vibration transmission.

[0043] The beneficial effects of this utility model of a vibration-damping four-in-four-out optical cable junction box for railways are:

[0044] The "four-in, four-out" multi-path design can accommodate multiple optical cables at the same time, meeting the needs of multi-path optical cable transmission in scenarios such as railways and subways.

[0045] By completely isolating the main frame from the shell assembly using vibration damping pads, vibration can be effectively reduced and avoided, meeting the stringent vibration requirements of railways, subways, and other scenarios, and avoiding frequent replacement of junction boxes due to poor vibration resistance.

[0046] It improves the reliability and service life of junction boxes, reduces manufacturing and subsequent maintenance costs while ensuring product quality and performance, and is easy to operate, making it highly valuable for market promotion.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A railway vibration-reducing quad-to-quad fiber cable splice closure, characterized by, The application relates to a cable storage device. The shell assembly comprises a first accommodating groove formed at each axial end of the inner cavity, and a second accommodating groove formed between the two first accommodating grooves. The main frame body is arranged in the shell assembly, and the two ends of the main frame body are bent to form a support plug for penetrating the optical cable, and the support plug is embedded in the first accommodating groove. The fiber fusion disc is arranged on the main frame body and accommodated in the second accommodating groove. The buffer damping gasket is arranged on the frame body between the support plug and the fiber fusion disc, and the main frame body is completely isolated from the shell assembly.

2. The railway damping 4-fiber 4-fiber cable joint box according to claim 1, characterized by, The shell assembly comprises an upper shell and a lower shell, and shell fixing holes are arranged around the upper shell and the lower shell.

3. The railway damping 4-fiber 4-fiber cable joint box according to claim 2, characterized by, A PVC waterproof sealing strip is arranged on the joint surface of the upper shell and the lower shell.

4. The railway damping quad-lam cable splice closure of claim 1, wherein, The first accommodating groove and the second accommodating groove are separated by a stepped transition.

5. The railway vibration-reducing quad-lam cable splice closure of claim 1, wherein, Each support plug comprises four groups of optical cable through holes arranged in a matrix, and a reinforcing core fixing column is arranged on each optical cable through hole.

6. The railway vibration damping quad-to-quad cable splice closure of claim 5, wherein, An optical cable locking band is arranged on the optical cable through hole of the support plug.

7. The railway vibration-reducing quad-lam cable splice closure of claim 1, wherein, The buffer damping gasket is a butyl rubber fluorine gasket.

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