Rat-proof and lightning-proof remote optical cable assembly for miniaturized base station

Abstract

The utility model discloses a rat-proof and lightning-proof remote optical cable assembly for a miniaturized base station, which comprises an armored optical cable body, an armored hollow pipe is coated on the outer side of the armored optical cable body, an annular film-coated armored steel belt is coated on the outer side of the armored hollow pipe, an outer sheath is coated on the outer side of the annular film-coated armored steel belt, and an inner sheath is coated on the outer side of the outer sheath. One end of the armored optical cable body is connected with the built-in encapsulation connecting sleeve, the strength of the annular film-covered armored steel band can greatly improve the strength of the armored optical cable body, and the annular film-covered armored steel band is of a closed annular structure and completely protects the interior of the armored optical cable body. The rat-proof and lightning-proof remote optical cable assembly for the miniaturized base station can resist biting of rats and the like in a buried environment and can prevent biting of squirrels in an overhead environment, meanwhile, when the product is used, a connecting line between the BBU and the RRU is connected, one section of the sheath is stripped off, a covering film of the steel belt is removed, and a grounding device is connected, so that the product is convenient to use. The lightning protection device can play a role in lightning protection, prevents optical cables or other devices from being damaged, and prevents fire hazards from being caused.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cables, in particular to a rat-proof and lightning-proof remote optical cable assembly for a miniaturized base station. Background Art

[0002] With the development of China's 4G fiber-to-the-tower and long-term evolution technology, a large number of base stations will inevitably be built. The use of remote optical cables for communication connections between base stations, especially for outdoor coverage, is increasing. Remote technology generally uses a distributed base station architecture, and optical fiber is required to connect the radio frequency remote module and the baseband processing unit. The remote distance is generally 100~300 meters, one end of which is located at the base station and the other end is located in the bureau. Since most of them are outdoors, mice and other rodents will inevitably cause damage to the normal transmission of the optical cable. Therefore, the remote optical cable products need to consider the function of rodent prevention at the same time.

[0003] The most practical method of rodent prevention is to use steel armored tubes, which can prevent most rodents from damaging optical cables. However, the use of steel armored tubes for rodent prevention also introduces a new problem. Since steel armored tubes can conduct electricity, lightning introduced into the transmission tower may be received by the optical cable assembly, and then transmitted along the steel armored tube in the optical cable, eventually damaging the optical cable or other equipment, and may even cause a fire. Therefore, it is urgent to propose a solution to the lightning protection problem of rodent-proof telescopic optical cables.

[0004] Therefore, we propose a miniaturized base station anti-rat and lightning-proof remote optical cable assembly to solve the above-mentioned problems. Utility Model Content

[0005] The utility model provides a rat-proof and lightning-proof remote optical cable assembly for a miniaturized base station, which solves the problem mentioned in the background technology that a relatively practical method for rat-proofing is to use a steel armored tube, which can prevent most rodents from damaging the optical cable. However, the use of steel armored tubes for rat-proofing also introduces a new problem. Since the steel armored tubes can conduct electricity, lightning introduced into the transmission tower may be received by the optical cable assembly, and then transmitted along the steel armored tubes in the optical cable, eventually damaging the optical cable or other equipment, and may even cause a fire in severe cases. Therefore, it is urgent to propose a solution to the lightning protection problem of rat-proof remote optical cables.

[0006] The utility model provides the following technical solution: a rat-proof and lightning-proof remote optical cable assembly for a miniaturized base station, comprising an armored optical cable body, the outer side of the armored optical cable body is coated with an armored hollow tube, the outer side of the armored hollow tube is coated with an annular coated armored steel belt, the outer side of the annular coated armored steel belt is coated with an outer sheath, one end of the armored optical cable body is connected to a built-in potting connection sleeve, and the outside of the built-in potting connection sleeve is coated with a hollow protective sleeve.

[0007] As an optional solution described in the utility model, wherein: the outer sheath is made of polyethylene material.

[0008] As an optional solution described in the utility model, the armored empty tube material is made of low-smoke halogen-free material, a coated steel belt is added between the two layers of sheath and a corrugated process is adopted to effectively enhance the strength of the optical cable and prevent the inner layer of the optical cable from being deformed and damaged.

[0009] As an optional solution described in the utility model, wherein: the armored hollow tube is connected to one end of the hollow protective sleeve, and a label is sleeved on the outer side of the armored hollow tube.

[0010] As an optional solution described in the utility model, one side of the armored empty tube is connected to an A-end branch tensile block, one side of the A-end branch tensile block is connected to a metal tube 1, one side of the metal tube 1 is connected to an LC / UPC connector, and the outer sides of the LC / UPC connector, the metal tube 1 and the A-end branch tensile block are jointly sleeved with a corrugated tube 1.

[0011] As an optional solution described in the utility model, one end of the armored optical cable body is connected to a second metal tube, one end of the second metal tube is connected to a FC / UPC connector, and the outer sides of the second metal tube and the FC / UPC connector are jointly sleeved with a second corrugated tube.

[0012] As an optional solution described in the utility model, wherein: the built-in potting connection sleeve includes a potting connection sleeve body fixedly installed at one end of the armored optical cable body, and a potting connection sleeve cap is slidably connected in the potting connection sleeve body.

[0013] The utility model has the following beneficial effects:

[0014] 1. The strength of the annular coated armored steel belt can greatly improve the strength of the armored optical cable body, and the annular coated armored steel belt is a closed annular structure, which completely protects the inside of the armored optical cable body. The rat-proof and lightning-proof remote optical cable assembly for miniaturized base stations can resist the bites of rats and other animals in an underground environment, and can prevent the bites of squirrels in an overhead environment. At the same time, this product is used as a connecting line between BBU and RRU. Peel off a section of the sheath and remove the coating of the steel belt, connect the grounding device, and it can play the role of lightning protection equipment to prevent damage to optical cables or other equipment and prevent fires.

[0015] 2. Under the coordination between the LC / UPC connector, metal tube 1, A-end branch tensile block, armored hollow tube, label, hollow protective sleeve, armored optical cable body, metal tube 2, FC / UPC connector, potting connection sleeve, potting connection sleeve body, potting connection sleeve cap, corrugated tube 2, corrugated tube 1, annular coated armored steel belt, and outer sheath, the reliability of bonding between the hollow protective sleeve and the potting connection sleeve is ensured, which can effectively improve the mechanical properties such as tension at the joint. The use of armored hollow tubes at the A-end branch cable of the optical cable assembly improves the compressive performance of the RRU end of the product. The outer packaging uses corrugated tubes to protect the connectors and armored tail cables at both ends, and fastening products such as cable ties are used to fix the protective sleeve at the tail to prevent the optical cable and connector from being damaged during transportation or installation, resulting in product defects. 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 schematic diagram of the overall cross-sectional structure of the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the armored optical cable system.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the potting connection sleeve of the utility model.

[0020] Figure 5 This is a schematic diagram of the grounding of the armored optical cable body of the present utility model.

[0021] In the figure: 1. LC / UPC connector; 2. Metal tube 1; 3. A-end branch tensile block; 4. Armored hollow tube; 5. Label; 6. Hollow protective cover; 7. Armored optical cable body; 8. Metal tube 2; 9. FC / UPC connector; 10. Potting connection sleeve; 101. Potting connection sleeve body; 102. Potting connection sleeve cap; 11. Corrugated tube 2; 12. Corrugated tube 1; 13. Annular coated armored steel belt; 14. Outer sheath. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1 - Figure 4 A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station includes an armored optical cable body 7, the outer side of the armored optical cable body 7 is coated with an armored hollow tube 4, the outer side of the armored hollow tube 4 is coated with an annular coated armored steel belt 13, the outer side of the annular coated armored steel belt 13 is coated with an outer sheath 14, one end of the armored optical cable body 7 is connected to a built-in potting connection sleeve 10, and the outside of the built-in potting connection sleeve 10 is coated with a hollow protective sleeve 6.

[0025] The strength of the annular coated armored steel belt 13 can greatly improve the strength of the armored optical cable body 7, and the annular coated armored steel belt 13 is a closed annular structure, which completely protects the inside of the armored optical cable body 7, can resist the biting of rodents and the like in an underground environment, and can prevent the biting of squirrels in an overhead environment. At the same time, this product is used as a connecting line between BBU and RRU. A section of the sheath is peeled off and the coating of the steel belt is removed, and the grounding device is connected. It can play the role of lightning protection equipment, prevent damage to optical cables or other equipment, and prevent fires.

[0026] Example 2

[0027] See also Figure 2 - Figure 5 The outer sheath 14 is made of polyethylene material.

[0028] The armored air tube 4 is made of low-smoke halogen-free material. A coated steel belt is added between the two sheaths and a corrugated process is adopted to effectively enhance the strength of the optical cable and prevent the inner layer of the optical cable from deformation and damage.

[0029] The armored hollow tube 4 is connected to one end of the hollow protective sleeve 6 , and a label 5 is sleeved on the outer side of the armored hollow tube 4 .

[0030] One side of the armored empty pipe 4 is connected to an A-end branch tensile block 3, one side of the A-end branch tensile block 3 is connected to a metal pipe 2, one side of the metal pipe 2 is connected to an LC / UPC connector 1, and the outer sides of the LC / UPC connector 1, the metal pipe 2 and the A-end branch tensile block 3 are jointly sleeved with a corrugated tube 12.

[0031] One end of the armored optical cable body 7 is connected to a metal tube 8 , one end of the metal tube 8 is connected to a FC / UPC connector 9 , and the outer sides of the metal tube 8 and the FC / UPC connector 9 are jointly sleeved with a corrugated tube 11 .

[0032] The built-in potting connection sleeve 10 comprises a potting connection sleeve body 101 fixedly mounted on one end of the armored optical cable body 7 , and a potting connection sleeve cap 102 is slidably connected inside the potting connection sleeve body 101 .

[0033] The connection between the 7mm armored hollow tube 4 and the 10mm armored optical cable body 7 at the RRU end is fixed by potting the connection sleeve 10, and the hollow protective sleeve 6 is fixed by potting the connection sleeve, which protects the connection of the armored optical cable body 7 and meets the IP67 protection level. The hollow protective sleeve 6 is made of TPV material, and the hollow protective sleeve 6 can support the armored hollow tube 4 sheath to be bent repeatedly at ±180° without being affected.

[0034] According to the construction requirements, the φ10mm two-core armored optical cable body 7 is cut into corresponding lengths. Products below 40m are rolled, and products of 40m and above are wound on paper drums;

[0035] At the B end, use a cable stripper to completely strip off the annular coated armored steel belt 13 and the φ7mm outer sheath 14 of the armored optical cable body 7, exposing the two internal filling ropes and two φ2mm sub-cables, remove the filling ropes and put them into the B end tensile fastener.

[0036] At end A, use a cable stripper to strip off the armored cable body 7 and the annular coated armored steel belt 13 to expose the internal φ7mm sheath. Reserve 20mmφ7mm sheath to achieve insulation effect, strip off the remaining φ7mm sheath to expose the two internal filling ropes and 2 φ2mm sub-cables. The reinforcing elements in the filling ropes and sub-cables are imported aramid, which can effectively improve the mechanical properties such as tension at the joint and ensure that the joint tension reaches 70N.

[0037] Pre-treat the φ7mm armored empty tube 4, remove the outer sheath 14 and the armor tube, and retain 10mm of aramid at one end and 20mm of aramid at the other end.

[0038] The A-end filling rope and sub-cable are covered with a φ7mm armored hollow tube 4 to protect the armored optical cable body 7, and then the potting connection sleeve 10 and the hollow protective sleeve 6 are put on the connection between the φ7mm sheath and the φ7mm armored hollow tube 4 for protection. The potting connection sleeve 10 protects the optical fiber at the connection between the armored hollow tube 4 and the optical cable from damage, and connects the 7mm armored hollow tube 4 and the 10mm armored optical cable body 7. Environmentally friendly epoxy AB glue is used, and the A glue and the B glue are melted in a precise proportion and then injected into the potting connection sleeve 10 to ensure the reliability of the potting connection sleeve 10. The hollow protective sleeve 6 is put on the outside of the potting connection sleeve 10, and the hollow protective sleeve 6 can effectively prevent the index of the armored hollow tube 4φ7mm sheath from being affected by the ±180° bending. The A glue and the B glue are melted in a precise proportion and then injected into the potting connection sleeve to ensure the reliability of the bonding between the hollow protective sleeve 6 and the potting connection sleeve 10.

[0039] The A end of the optical cable assembly is the RRU. After the sub-cable is inserted into the 2.0 armored metal tube 1, two LC / UPC connectors 1 can be added. Insert the loose parts and ferrules into the sub-cable in turn, and cure, assemble, grind and inspect the end face.

[0040] The B end of the optical cable assembly is the BBU. The sub-cable is inserted into the 3.0 armored metal tube. Two optical fiber connectors can be added according to the construction requirements. The optical fiber connector type can be LC, FC, or SC. The sub-cable is inserted with loose parts and ferrules in turn, and then cured, assembled, polished, end-face tested, and optical performance tested.

[0041] The use of an armored empty tube 4 for protection at the branch cable at end A of the optical cable assembly improves the compression resistance of the RRU end of the product.

[0042] The A end uses a 7mm branch tensile block for protection and fixation, and the B end uses a 10mm branch tensile block for protection and fixation. The self-developed high-precision wire splitter glue injection device is used to inject glue to the branch after the A glue and B glue are blended in a precise proportion, which can ensure the size of the branch length, effectively control the size error of the product, and improve the accuracy of the optical cable branch length. Accelerate the curing speed of the glue, effectively improve production efficiency, and ensure the reliability of the wire splitter bonding, strengthen the branch tensile strength, and make the tensile strength reach 180N.

[0043] Conduct end face inspection and optical performance inspection on products to ensure that product performance meets standards.

[0044] The outer packaging uses a corrugated tube to protect the connectors and armored pigtail cables at both ends, and fasteners such as cable ties are used to fix the protective sleeve at the tail to prevent the optical cable and connector from being damaged during transportation or installation, which may cause product defects.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station, comprising an armored optical cable body (7), characterized in that: The outer side of the armored optical cable body (7) is coated with an armored hollow tube (4), the outer side of the armored hollow tube (4) is coated with an annular coated armored steel belt (13), the outer side of the annular coated armored steel belt (13) is coated with an outer sheath (14), one end of the armored optical cable body (7) is connected to a built-in potting connection sleeve (10), and the outer side of the built-in potting connection sleeve (10) is coated with a hollow protective sleeve (6).

2. According to claim 1, a rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station is characterized in that: The outer sheath (14) is made of polyethylene material.

3. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station according to claim 2, characterized in that: The armored empty tube (4) is made of low-smoke halogen-free material, and a coated steel strip is added between the two sheaths and a corrugation process is adopted, which effectively enhances the strength of the optical cable and prevents the inner layer of the optical cable from being deformed and damaged.

4. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station according to claim 3, characterized in that: The armored hollow tube (4) is connected to one end of the hollow protective sleeve (6), and a label (5) is sleeved on the outer side of the armored hollow tube (4).

5. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station according to claim 4, characterized in that: One side of the armored hollow tube (4) is connected to an A-end branch tensile block (3), one side of the A-end branch tensile block (3) is connected to a metal tube (2), one side of the metal tube (2) is connected to an LC / UPC connector (1), and the outer sides of the LC / UPC connector (1), the metal tube (2) and the A-end branch tensile block (3) are commonly sleeved with a corrugated tube (12).

6. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station according to claim 5, characterized in that: One end of the armored optical cable body (7) is connected to a second metal tube (8), one end of the second metal tube (8) is connected to a FC / UPC connector (9), and the outer sides of the second metal tube (8) and the FC / UPC connector (9) are jointly sleeved with a second corrugated tube (11).

7. A rodent-proof and lightning-proof remote optical cable assembly for a miniaturized base station according to claim 6, characterized in that: The built-in potting connection sleeve (10) comprises a potting connection sleeve body (101) fixedly mounted on one end of the armored optical cable body (7), and a potting connection sleeve cap (102) is slidably connected inside the potting connection sleeve body (101).

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