Optical cable splice box

Abstract

The invention discloses an optical cable joint box, comprising a box body, a fastening device arranged inside the box body, the fastening device comprising an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are combined to form a through hole adapted to a non-metallic reinforcement core, and the inner surface of the through hole is a friction surface. The fastening device fixes the non-metallic reinforcement core mechanically, does not cause the non-metallic reinforcement core to break, and is firmly fixed, so that the optical cable will not be pulled off.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable joint closures, and more particularly to optical cable joint closures. Background Art

[0002] The following background art is used to help readers understand the present invention and is not to be regarded as prior art.

[0003] Optical cable splice box is a popular name for optical cable splice box, also known as optical cable splice package, optical cable splice package and barrel. It belongs to the mechanical pressure sealing joint system. It is a splicing protection device that provides optical, sealing and mechanical strength continuity between adjacent optical cables. It is mainly suitable for direct and branch connections of various structural optical cables in overhead, pipeline, direct buried and other laying methods.

[0004] The reinforcement core in ordinary optical cables is a metal reinforcement core, such as steel. Steel is conductive. When lightning strikes outdoors, it causes electricity inside the optical cable junction box, and the entire machine room and the entire optical cable will be scrapped. Therefore, non-metallic reinforcement core optical cables are now mostly used, which are safe and reliable. Traditional optical cable junction boxes are only used to fix ordinary optical cables, and cannot fix non-metallic reinforcement core optical cables or the fixation does not meet industry standards. Using traditional optical cable junction boxes to fix non-metallic reinforcement core optical cables will cause the non-metallic reinforcement core to break, resulting in insufficient tension in the optical cable. Summary of the invention

[0005] The object of the present invention is to provide an optical cable joint box, in which a fastening device uses a mechanical method to fix a non-metallic reinforcement core, which will not cause the non-metallic reinforcement core to break and is firmly fixed, so that the optical cable will not be pulled off.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an optical cable joint box includes a box body, a fastening device is arranged inside the box body, the fastening device includes an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are combined to form a through hole adapted to the non-metallic reinforcement core, and the inner surface of the through hole is a friction surface. Preferably, the upper pressing plate and the lower pressing plate have the same shape and size.

[0007] As a preferred solution, the upper pressing plate is provided with a first bolt hole, and the lower pressing plate is correspondingly provided with a second bolt hole, and the upper pressing plate is fixed to the lower pressing plate by bolts. Preferably, the first bolt holes are symmetrically arranged on both sides of the upper pressing plate, and the second bolt holes are symmetrically arranged on both sides of the lower pressing plate, and the through hole is located at the center of the two first bolt holes. Preferably, the first bolt hole is a countersunk hole. Preferably, spring washers and flat washers are sequentially arranged between the bolts and the first bolt holes. Preferably, a nut hole adapted to the nut is opened on the bottom end face of the lower pressing plate, and the nut hole is connected with the second bolt hole. Preferably, the lower pressing plate is provided with a nut, and the nut is embedded in the nut hole. Preferably, the nut is partially embedded in the nut hole and partially exposed at the bottom of the lower pressing plate.

[0008] As a preferred solution, the upper pressing plate has an upper groove, the lower pressing plate has a lower groove, and the upper groove and the lower groove form a through hole. Preferably, the upper pressing plate has a through hole, and the lower pressing plate is a plane, or the upper pressing plate is a plane, and the lower pressing plate has a through hole. Preferably, the through hole is formed by closing the upper groove and the lower groove, and the upper groove and the lower groove have the same shape and size, both of which are semicircular arcs.

[0009] As a preferred solution, the lower pressing plate is provided with a positioning piece, and the upper pressing plate is provided with a positioning hole that cooperates with the positioning piece, or the upper pressing plate is provided with a positioning piece, and the lower pressing plate is provided with a positioning hole that cooperates with the positioning piece. Preferably, the positioning piece is a square, and the positioning hole is a through hole or the positioning hole is a blind hole, and the blind hole has an entrance end, and the entrance end is located at the bottom end surface of the upper pressing plate or the top end surface of the lower pressing plate. Further, the positioning pieces are symmetrically arranged on both sides of the upper pressing plate or the lower pressing plate, and the through hole is located at the center position between the two positioning pieces. Preferably, the line connecting the first bolt hole and the second bolt hole is taken as the center line, and positioning pieces are provided on both sides of the center line. Preferably, the upper pressing plate or the lower pressing plate is provided with 4 positioning pieces.

[0010] As a preferred solution, the reinforcing core fixing device includes a base, a reinforcing core column and a pressing piece, the base is fixed to the bottom of the box body, the base diameter is larger than the reinforcing core column diameter, the reinforcing core column is fixed to the center of the base; the reinforcing core column has a mounting hole and a through hole, and the mounting hole and the through hole intersect vertically. Preferably, the reinforcing core column is a hexagonal prism.

[0011] As a preferred solution, the upper pressing plate is provided with an upper notch, and the lower pressing plate is provided with a lower notch correspondingly, the upper notch and the lower notch are of the same shape, and the through hole passes through the upper notch and the lower notch. Preferably, the upper notch and the lower notch both have a plane and an inclined surface, and the inclined surfaces are symmetrically arranged on both sides of the plane, and the upper notch and the lower notch are both trapezoidal, and the upper notch and the lower notch fit and embrace half of the reinforcing core column. Setting the upper notch and the lower notch into a trapezoidal shape that matches half of the reinforcing core column can improve the fixing effect between the fastening device and the reinforcing core fixing device. Preferably, the clamping member has an exposed portion and an inserted portion, and the diameter of the exposed portion is larger than the diameter of the inserted portion. Preferably, the clamping member is a bolt, the exposed portion is a nut, and the inserted portion is a stud.

[0012] As a preferred solution, the upper pressing plate and the lower pressing plate are made of aluminum material.

[0013] The advantages of the present invention are:

[0014] 1. By setting a fastening device, the non-metallic reinforcement core passes through the through hole of the fastening device, and generates friction by contacting with the inner surface of the through hole. At the same time, the upper pressure plate and the lower pressure plate apply a certain extrusion force to the non-metallic reinforcement core, thereby fixing the non-metallic reinforcement core and ensuring that the non-metallic reinforcement core will not break, so that the optical cable has sufficient tension.

[0015] 2. Bolt fixing, the upper and lower pressure plates can be easily disassembled or installed, and the non-metallic reinforcement core can be easily passed through the through hole.

[0016] 3. Embed the nut into the second bolt hole. First, there is no gap between the nut and the bolt, which enhances the tightness between the upper and lower pressure plates. Secondly, it is difficult to completely tighten the nut and the bolt. External force applied to the non-metallic reinforcement core or the upper and lower pressure plates will cause the nut to fall off. Embedding the nut into the second bolt hole will prevent the nut from falling off. Third, since the second bolt hole is close to the bottom of the box body, it is inconvenient to tighten the nut. By embedding the nut into the second bolt hole, the bolt can be directly tightened, which is easy to operate.

[0017] 4. The positioning piece is conducive to the accurate fitting of the upper pressing plate and the lower pressing plate, the upper groove is aligned with the lower groove, and the first bolt is aligned with the second bolt hole, so that the upper pressing plate and the lower pressing plate can be accurately fitted.

[0018] 5. The existing reinforcing core fixing device in the box body is utilized, which not only has the positioning function, but also can fix the fastening device on the positioning device to limit the movement of the fastening device.

[0019] 6. The fastening device is used as an accessory to make the optical cable joint box have dual functions. When using a metal reinforcement core, there is no need for a fastening device, and the reinforcement core fixing device is directly used to fasten the metal reinforcement core; when using a non-metal reinforcement core, the fastening device holds the reinforcement core column to fix the non-metal reinforcement core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an optical cable junction box with a fastening device.

[0021] Figure 2 It is a structural schematic diagram of the fastening device holding the reinforcing core fixing device.

[0022] Figure 3 It is a schematic diagram of the structure of the fastening device.

[0023] Figure 4 It is a schematic diagram of the structure of the upper pressing plate and the lower pressing plate, Figure a is the lower pressing plate, and Figure b is the upper pressing plate.

[0024] Figure 5 It is a schematic diagram of the structure of the upper pressing plate and the lower pressing plate, Figure a is the upper pressing plate, and Figure b is the lower pressing plate.

[0025] Figure 6 It is a schematic diagram of the structure of the upper pressing plate and the lower pressing plate, Figure a is the upper pressing plate, and Figure b is the lower pressing plate.

[0026] Figure 7 It is a schematic diagram of the structure of the upper pressing plate and the lower pressing plate, Figure a is the upper pressing plate, and Figure b is the lower pressing plate.

[0027] Figure 8 It is a schematic diagram of the structure of the upper pressing plate and the lower pressing plate, Figure a is the upper pressing plate, and Figure b is the lower pressing plate.

[0028] Fig. 9 It is a schematic diagram of the structure of the reinforcing core fixing device.

[0029] Fig.10 It is a structural schematic diagram of the fastening device.

[0030] Markings in the figure: box body 1, fastening device 2, upper pressing plate 201, lower pressing plate 202, nut hole 2021, through hole 203, first bolt hole 204, second bolt hole 205, upper groove 206, lower groove 207, positioning member 208, positioning hole 209, upper notch 210, lower notch 211, first positioning member 2081, second positioning member 2082, third positioning member 2083, fourth positioning member 2084, first positioning hole 2091, second positioning hole 2092, third positioning hole 2093, fourth positioning hole 2094, reinforcing core fixing device 3, base 301, reinforcing core column 302, pressing member 303, mounting hole 304, through hole 305, plane 2101, inclined surface 2102, exposed portion 3031, inserted portion 3032, non-metallic reinforcing core 4, optical cable 5. DETAILED DESCRIPTION

[0031] The following further describes the structures involved in the present invention or the technical terms used in these descriptions. These descriptions are only used as examples to illustrate how the methods of the present invention are implemented, and cannot constitute any limitation to the present invention.

[0032] like Figure 1 and 2 As shown, the optical cable joint box includes a box body 1, and a fastening device 2 is arranged inside the box body 1. The fastening device 2 includes an upper pressing plate 201 and a lower pressing plate 202. The upper pressing plate 201 and the lower pressing plate 202 cover and form a through hole 203 adapted to the non-metallic reinforcing core 4, and the inner surface of the through hole is a friction surface. The non-metallic reinforcing core 4 passes through the through hole, and generates friction by contacting with the inner surface of the through hole. At the same time, the upper pressing plate 201 and the lower pressing plate 202 apply a certain extrusion force to the non-metallic reinforcing core 4, thereby fixing the non-metallic reinforcing core 4 and ensuring that the non-metallic reinforcing core 4 will not break, so that the optical cable has sufficient tension.

[0033] It should be noted that the inner surface of the through hole has a certain degree of roughness, so that friction can be generated to hinder the relative movement or relative movement trend of the object, that is, the non-metallic reinforcing core 4. The through hole 203 is adapted to the non-metallic reinforcing core 4, which not only satisfies the inner surface of the through hole to provide friction to the non-metallic reinforcing core 4, but also the upper pressing plate 201 and the lower pressing plate 202 can exert a certain extrusion force on the non-metallic reinforcing core 4. If the size of the through hole is much larger than the size of the non-metallic reinforcing core 4, the activity space of the non-metallic reinforcing core inside the through hole 203 increases, the contact probability between the non-metallic reinforcing core and the inner surface of the through hole decreases, and the inner surface of the through hole cannot provide friction fixing to the non-metallic reinforcing core; if the size of the through hole is smaller than the size of the non-metallic reinforcing core 4, the non-metallic reinforcing core is in an extrusion state, and the fixing effect is too obvious, which will cause the non-metallic reinforcing core 4 to break due to excessive tension, and the non-metallic reinforcing core 4 will also wear or even break due to excessive friction between the non-metallic reinforcing core 4 and the inner surface of the through hole.

[0034] As a specific example, Figure 3 As shown, the upper pressing plate 201 and the lower pressing plate 202 have the same shape and size, and the two are completely fitted. In order to ensure continuous friction, the upper pressing plate 201 and the lower pressing plate 202 have a certain length, and because the through hole is adapted to the non-metallic reinforcing core 4, the non-metallic reinforcing core is not easy to pass through the through hole. By setting the upper pressing plate 201 and the lower pressing plate 202 in a covering manner, the non-metallic reinforcing core 4 can pass through the through hole 203 conveniently and quickly.

[0035] As a specific example, Figure 4 and Figure 5As shown, the upper pressing plate is provided with a first bolt hole 204, and the lower pressing plate is correspondingly provided with a second bolt hole 205, and the upper pressing plate 201 is fixed to the lower pressing plate 202 by bolts. Bolt fixing can conveniently disassemble or install the upper pressing plate 201 and the lower pressing plate 202. Further, in order to enhance the fixity and stability between the upper pressing plate 201 and the lower pressing plate 202, the first bolt holes 204 are symmetrically arranged on both sides of the upper pressing plate 201, and the second bolt holes 205 are symmetrically arranged on both sides of the lower pressing plate 202, and the through hole 203 is located at the center of the two first bolt holes 204. The non-metallic reinforcing core passes through the through hole 203, and the bolts on both sides of the non-metallic reinforcing core 4 fasten the upper pressing plate 201 and the lower pressing plate 202, and at the same time fix the non-metallic reinforcing core 4 in the through hole 203 to prevent the external force from causing the upper pressing plate 201 and the lower pressing plate 202 to deviate. Further, the first bolt hole 204 is a countersunk hole. The bolt includes a nut, and the countersunk hole can accommodate the nut. The bolts pass through the first bolt hole 204 and the second bolt hole 205 in sequence, and the nuts are located inside the countersunk holes to avoid interference from the protrusions of the nuts and ensure the flatness of the installation plane. In order to ensure the tightness between the upper pressing plate 201 and the lower pressing plate 202, spring washers and flat washers are sequentially sleeved between the bolts and the first bolt holes, that is, the spring washers are located between the flat washers and the nuts of the bolts. The function of the spring washers is that after tightening the bolts, the spring washers give the bolts an elastic force to prevent them from falling off easily. The flat washers can increase the contact area between the bolts and the upper pressing plate 201, and at the same time can eliminate the damage to the surface of the upper pressing plate 201 caused by the spring washers when the bolts are removed. When fixing the upper pressing plate 201 and the lower pressing plate 202 with bolts, the bolts are sequentially sleeved with spring washers and flat washers, and then passed through the lower pressing plate 202 from the upper pressing plate 201 to fix the upper pressing plate 201 and the lower pressing plate 202 together.

[0036] As a specific embodiment, a nut hole 2021 adapted to the nut is opened on the bottom end surface of the lower pressing plate 202, and the nut hole is connected with the second bolt hole 205. Figure 5 As shown. Preferably, the lower pressing plate 202 is provided with a nut, and the nut is embedded in the nut hole 2021. First, if the nut is separated from the nut hole 2021, when tightening the nut, there is still an inevitable gap between the nut and the bolt, and the upper pressing plate 201 and the lower pressing plate 202 cannot achieve the tightening effect. The nut is embedded in the nut hole 2021, and there is no gap between the nut and the bolt, which enhances the tightness between the upper pressing plate 201 and the lower pressing plate 202. Secondly, it is difficult to completely tighten the nut and the bolt, and the external force applied to the non-metallic reinforcing core 4 or the upper and lower pressing plates will cause the nut to fall off. The nut is embedded in the nut hole 2021, and the problem of the nut falling off will not occur. Third, since the nut hole 2021 is close to the bottom of the box body, it is inconvenient to tighten the nut. By embedding the nut in the nut hole 2021, the bolt can be directly tightened, which is convenient to operate. Among them, due to the relatively small thickness of the lower pressing plate 202, the nut is partially embedded in the nut hole 2021, and partially exposed at the bottom of the lower pressing plate 202.

[0037] As a specific example, Figure 3-8 As shown, the upper pressing plate 201 is provided with an upper groove 206, and the lower pressing plate 202 is provided with a lower groove 207, and the upper groove 206 and the lower groove 207 form a through hole 203. The shape and size of the upper groove 206 and the lower groove 207 are not limited, as long as the upper groove 206 and the lower groove 207 can form a through hole through which the non-metallic reinforcing core 4 passes and is compatible with the non-metallic reinforcing core 4. For example, the through hole is circular, and the cross section of the upper groove 206 is less than or equal to half of the circle, and the cross section of the lower groove 207 is correspondingly greater than or equal to half of the circle. As another specific embodiment, the upper pressing plate 201 is provided with a through hole 203, and the lower pressing plate 202 is a plane, or the upper pressing plate 201 is a plane, and the lower pressing plate 202 is provided with a through hole 203. In this way, one of the upper pressing plate 201 or the lower pressing plate 202 is provided with a through hole, and the other is a plane, so that only one of the pressing plates needs to be opened, and the manufacturing process is omitted. Of course, the preferred way is that the through hole 203 is formed by closing the upper groove 206 and the lower groove 207. The upper groove 206 and the lower groove 207 have the same shape and size, both of which are semicircular arcs. In this way, they can be reversely displaced and interact with each other to increase the tensile force of the non-metallic reinforcement core 4 and improve the fastening force of the non-metallic reinforcement core 4.

[0038] As a specific example, Figure 6As shown, the lower pressing plate 202 is provided with a positioning member 208, and the upper pressing plate 201 is provided with a positioning hole 209 that cooperates with the positioning member 208, or the upper pressing plate 201 is provided with a positioning member 208, and the lower pressing plate 202 is provided with a positioning hole 209 that cooperates with the positioning member 208. Here, the positioning member 208 is conducive to the accurate fit of the upper pressing plate 201 and the lower pressing plate 202, the upper groove 206 is aligned with the lower groove 207, and the first bolt hole 204 is aligned with the second bolt hole 205. During installation, the positioning member 208 is inserted into the positioning hole 209, so that the upper pressing plate 201 and the lower pressing plate 202 can be accurately fitted. Preferably, the positioning member 208 is a square, the positioning hole 209 is a through hole or the positioning hole 209 is a blind hole, and the blind hole has an inlet end, and the inlet end is located at the bottom end surface of the upper pressing plate 201 or the top end surface of the lower pressing plate 202. Further, the positioning members 208 are symmetrically arranged on both sides of the upper pressing plate 201 or the lower pressing plate 202, and the through hole 203 passes through the center position between the two positioning members 208, and the positioning members 208 are symmetrically arranged on both sides of the lower pressing plate 202. The two positioning members 208 are symmetrically arranged, which can ensure more accurate positioning and make the upper pressing plate 201 and the lower pressing plate 202 fit quickly and accurately. Preferably, the line connecting the first bolt hole 204 and the second bolt hole 205 is taken as the center line, and positioning members 208 are arranged on both sides of the center line. In this embodiment, there are 4 positioning members 208, and the 4 positioning members 208 are evenly arranged on the upper pressing plate 201 or the lower pressing plate 202, and the upper pressing plate 201 or the lower pressing plate 202 is correspondingly provided with positioning holes 209 that cooperate with the positioning members 208. The provision of multiple positioning members 208 not only makes positioning more accurate, but also makes the fit between the upper pressing plate 201 and the lower pressing plate 202 more firm. Further, the positioning members 208 are staggeredly arranged on the upper pressing plate 201 and the lower pressing plate 202. For example, the fastening device is provided with 4 positioning members, namely the first positioning member 2081, the second positioning member 2082, the third positioning member 2083 and the fourth positioning member 2084, and the corresponding positioning holes are respectively the first positioning hole 2091, the second positioning hole 2092, the third positioning hole 2093 and the fourth positioning hole 2094. The first positioning member 2081 and the second positioning member 2082 are located on the upper pressing plate 201, and the third positioning member 2083 and the fourth positioning member 2084 are located on the lower pressing plate 202. Correspondingly, the first positioning hole 2091 and the second positioning hole 2092 are located on the lower pressing plate 202, and the third positioning hole 2093 and the fourth positioning hole 2094 are located on the upper pressing plate 201, see Figure 7 Alternatively, the first positioning member 2081 and the third positioning member 2083 are located on the upper pressing plate 201, and the second positioning member 2082 and the fourth positioning member 2084 are located on the lower pressing plate 202. Correspondingly, the first positioning hole 2091 and the third positioning hole 2093 are located on the lower pressing plate 202, and the second positioning hole 2092 and the fourth positioning hole 2094 are located on the upper pressing plate 201. Figure 8 .

[0039] As a specific embodiment, a reinforcing core fixing device 3 is provided inside the box body 1, such as Figure 2 As shown, the fastening device 2 is fixed to the reinforcing core fixing device 3. The reinforcing core fixing device 3 is a device for fixing the metal reinforcing core in the common optical cable in the existing optical cable joint box. Fig. 9 As shown, the reinforcing core fixing device 3 includes a base 301, a reinforcing core column 302 and a pressing piece 303. The base 301 is fixed to the bottom of the box body 1. The diameter of the base 301 is larger than the diameter of the reinforcing core column 302. The reinforcing core column 302 is fixed to the center of the base 301. The reinforcing core column 302 has a mounting hole 304 and a through hole 305. The mounting hole 304 and the through hole 305 intersect vertically. The method for fixing the metal reinforcing core by the reinforcing core fixing device 3 is: the metal reinforcing core passes through the through hole 305 of the reinforcing core column 302, the pressing piece 303 is inserted into the mounting hole 304, and the pressing piece 303 is tightened to press the metal reinforcing core for fastening. One way to fix the fastening device 2 to the reinforcing core fixing device 3 is: as Fig.10As shown, the upper pressing plate 201 is provided with an upper notch 210, and the lower pressing plate 202 is provided with a lower notch 211 correspondingly. The upper notch 210 and the lower notch 211 are of the same shape, and both are provided on the side close to the positioning member 208. Preferably, the upper notch 210 and the lower notch 211 both have a plane 2101 and an inclined surface 2102, and the inclined surfaces 2102 are symmetrically arranged on both sides of the plane 2101. The upper notch 210 and the lower notch 211 are both trapezoidal, and the reinforcing core column 302 is a hexagonal prism. The upper notch 210 and the lower notch 211 fit and embrace half of the reinforcing core column 302. The upper notch 210 and the lower notch 211 are arranged in a trapezoidal shape that matches the half reinforcing core column, which can improve the fixing effect between the fastening device and the reinforcing core fixing device. The clamping member 303 has an exposed portion 3031 and an inserted portion 3032, the diameter of the exposed portion 3031 is larger than the diameter of the inserted portion 3032, and the clamping member 303 is screwed into the mounting hole 304, and the exposed portion 3031 can prevent the fastening device 2 from falling off. Preferably, the clamping member is a bolt, the exposed portion is a nut, and the inserted portion is a stud. It should be noted here that when the clamping member 303 is screwed into the mounting hole 304, it is not necessary to screw it to the tightest state, because screwing it to the tightest state will cause the non-metallic reinforcing core 4 to break. The clamping member is screwed until it does not contact the non-metallic reinforcing core 4 or the non-metallic reinforcing core 4 contacts, but it does not need to be tightened. The lower pressing plate is located on the base, and the upper and lower pressing plates hold the reinforcing core column 302 through the upper notch 210 and the lower notch 211. The non-metallic reinforcing core 4 passes through the perforation and the through hole in turn, and then the upper pressing plate and the lower pressing plate are fixed by bolts, and the fastening device 2 can be fixed on the reinforcing core fixing device 3. The reinforcing core fixing device 3 not only has the function of positioning, but also can fix the fastening device 2 on the reinforcing core fixing device 3 to limit the movement of the fastening device 2. The fastening device 2 is used as an accessory to make the optical cable joint box have dual functions. When a metal reinforcing core is used, the fastening device is not required, and the reinforcing core fixing device is directly used to fasten the metal reinforcing core; when a non-metallic reinforcing core 4 is used, the fastening device embraces the reinforcing core column to fix the non-metallic reinforcing core 4.

[0040] As a specific embodiment, the upper pressing plate 201 and the lower pressing plate 202 are made of aluminum material. Aluminum material is light in weight and easy to process.

[0041] The invention shown and described herein can be implemented in the absence of any element, limitation specifically disclosed herein. The terms and expressions used are used as illustrative terms rather than limiting, and it is not intended to exclude any equivalents of the features shown and described or parts thereof in the use of these terms and expressions, and it should be recognized that various modifications are feasible within the scope of the present invention. It should therefore be understood that, although the present invention is specifically disclosed through various embodiments and optional features, modifications and variations of the concepts described herein can be adopted by those of ordinary skill in the art, and it is believed that these modifications and variations fall within the scope of the present invention as defined in the appended claims.

[0042] The contents of the articles, patents, patent applications, and all other documents and electronically available information described or recorded herein are incorporated by reference in their entirety to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate into this application any and all materials and information from any such article, patent, patent application, or other document.

Claims

1. Optical cable splice box, characterized in that: It includes a box body, and a fastening device is arranged inside the box body. The fastening device includes an upper pressing plate and a lower pressing plate. The upper pressing plate and the lower pressing plate are covered to form a through hole adapted to the non-metallic reinforcing core, and the inner surface of the through hole is a friction surface; the upper pressing plate is provided with a first bolt hole, and the lower pressing plate is correspondingly provided with a second bolt hole, and the upper pressing plate is fixed to the lower pressing plate by bolts; the first bolt holes are symmetrically arranged on both sides of the upper pressing plate, and the second bolt holes are symmetrically arranged on both sides of the lower pressing plate, and the through hole is located at the center position of the two first bolt holes, and the first bolt hole is a countersunk hole; a nut hole adapted to a nut is opened on the bottom end face of the lower pressing plate, and the nut hole is connected with the second bolt hole, and the lower pressing plate is provided with a nut, and the nut is embedded in the nut hole; the upper pressing plate is provided with an upper groove, and the lower pressing plate is provided with a lower groove, and the upper groove and the lower groove form a through hole; the upper pressing plate is provided with a through hole, and the lower pressing plate is a plane, or The upper pressing plate is a plane, and the lower pressing plate is provided with a through hole. The upper groove and the lower groove have the same shape and size, both are semicircular; the lower pressing plate is provided with a positioning piece, and the upper pressing plate is provided with a positioning hole that cooperates with the positioning piece, or the upper pressing plate is provided with a positioning piece, and the lower pressing plate is provided with a positioning hole that cooperates with the positioning piece; the reinforcing core fixing device includes a base, a reinforcing core column and a clamping piece, the base is fixed to the bottom of the box body, the base diameter is larger than the reinforcing core column diameter, and the reinforcing core column is fixed at the center position of the base; the reinforcing core column has a mounting hole and a through hole, the mounting hole and the through hole intersect vertically, and the reinforcing core column is a hexagonal column; the upper pressing plate is provided with an upper notch, and the lower pressing plate is correspondingly provided with a lower notch, the upper notch and the lower notch have the same shape, the through hole passes through the upper notch and the lower notch, the upper notch and the lower notch are both trapezoidal, and the upper notch and the lower notch fit and embrace half of the reinforcing core column.

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