Rack-mounted high-density optical fiber distribution box

Abstract

The invention discloses a rack-mounted high-density optical fiber distribution box which comprises a box body, a drawer, a cover plate assembly and a plurality of module boxes, the drawer and the cover plate assembly are both installed on the box body, and the rack-mounted high-density optical fiber distribution box is characterized in that a sliding rail assembly used for multi-section sliding of the drawer is arranged in the box body; the drawer is provided with a rack assembly used for installing the module boxes in a high-density arrangement mode and installed in a sliding mode, the drawer is further provided with a wire arrangement frame used for high-density wire arrangement and wiring, the module boxes can be installed in a high-density arrangement mode, the wire arrangement frame and the cover plate assembly are arranged, wire arrangement, overhauling and other work can be rapidly carried out, and the working efficiency is improved. The space utilization rate in the box body is improved, and certain use value and popularization value are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber distribution boxes, and in particular to a rack-type high-density optical fiber distribution box. Background Art

[0002] Fiber optic distribution box, also known as fiber optic terminal box or fiber optic splicing box, is a device used to protect fiber optic connection points and facilitate the management and distribution of fiber optic lines. It is usually installed in indoor or outdoor environments, such as inside buildings, data centers, telecommunications rooms, etc., to provide a safe and tidy space to store and manage optical cables and their connectors.

[0003] In recent years, with the continuous development of digital transformation, industrial Internet, Internet of Things, etc., the demand for bandwidth has grown exponentially, and data center construction has been continuously expanded and upgraded. Conventional fiber optic distribution boxes have 24 cores, 48 ​​cores, and 96 cores in 1U. The density of fiber optic wiring is low, and the space utilization rate is relatively low. It cannot meet the smooth upgrade of 10G / 40G / 100G / 200G / 400G bandwidth. In addition, the cable management structure design of common conventional fiber optic distribution boxes cannot be disassembled and assembled, and the effect of back-end cable management inspection cannot be taken into account.

[0004] Therefore, a rack-mounted high-density optical fiber distribution box is needed to solve the deficiencies in the prior art. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a rack-mounted high-density optical fiber distribution box, aiming to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rack-mounted high-density optical fiber distribution box, comprising a box body, a drawer, a cover assembly and a plurality of module boxes, wherein the drawer and the cover assembly are both mounted on the box body, and characterized in that a slide rail assembly for multi-stage sliding of the drawer is provided in the box body, a rack assembly for slidingly mounting high-density arrayed module boxes is mounted on the drawer, and a wire management rack for high-density wire management and wiring is also mounted on the drawer. The module boxes can be mounted in a high-density array through the rack assembly, and wire management and maintenance can be performed quickly with the wire management rack and the cover assembly, thereby improving the space utilization rate in the box body.

[0007] Further, the drawer includes a bottom plate, a positioning plate and a wing plate, the positioning plate is arranged at the front end of the bottom plate, the wing plates are arranged at the left and right sides of the bottom plate, the bottom plate is used to install and fix the rack assembly, the positioning plate is used to install and fix the cable management rack, the wing plate is used to connect the slide rail assembly, and the top of the wing plate is provided with a folded edge; The positioning plate comprises a vertical plate and a horizontal plate, the vertical plate and the horizontal plate are an integrated L-shaped structure, quick-insertion holes are provided on both the vertical plate and the horizontal plate, and a U-shaped opening is also provided on the vertical plate.

[0008] Further, the slide rail assembly includes a fixed rail, a straight movable rail and a bent movable rail, the fixed rail is connected to the box body, the straight movable rail and the bent movable rail are both connected to the wing plate, and the straight movable rail is located directly below the bent movable rail; The fixed rail is provided with a first slideway, a second slideway and a third slideway, the first slideway is used to adapt to the top folded edge of the wing plate for horizontal displacement, the second slideway is provided with a first side protrusion for adapting to the bent movable rail, the third slideway is provided with a recess for adapting to the straight movable rail, the middle of the recess is provided with a second side protrusion, and side grooves are symmetrically provided at the left and right ends of the side recess; One end of the straight movable rail is provided with a first side clamping block for adapting to the second side protrusion; A protruding limiting groove for adapting to the first side protrusion is provided on one side of the bent movable rail close to the fixed rail.

[0009] Further, the rack assembly includes a first rack, a second rack and multiple third racks, the first rack and the second rack are respectively installed on the left and right ends of the base plate, the multiple third racks are equidistantly arranged and installed on the base plate and located between the first rack and the second rack, and the third rack includes a limiting mounting surface and a sliding mounting surface, and the limiting mounting surfaces and the sliding mounting surfaces of the first rack, the second rack and the third rack are all provided with sliding grooves.

[0010] Furthermore, a plurality of open slide grooves are longitudinally arranged on the limiting mounting surfaces and the sliding mounting surfaces of the first frame, the second frame and the third frame.

[0011] Furthermore, a limiting column is provided in the tail end of the slide slot provided on the second frame and the limiting installation surface, and the limiting installation surface and the sliding installation surface are respectively provided on the left and right sides of the third frame.

[0012] Furthermore, the cable management rack includes a cable management ring and a clamping plate, an opening is provided between the cable management ring and the clamping plate, a clamping block for adapting to the U-shaped opening is fixedly provided at the top of the opening, and protrusions for adapting to the quick-connect jack are provided on the cable management ring and the clamping plate.

[0013] Further, the cover plate assembly includes a front cover plate, a rear cover plate, a cable tray and a cable upper cover plate, the front cover plate and the rear cover plate are installed on the top of the box body, the cable tray is installed on the rear end of the box body, and the cable upper cover plate is located directly above the cable tray; The rear cover plate is provided with a side strip for limiting and supporting the upper cover plate for wiring arrangement; The cable management support plate is provided with a plurality of cable management openings, and a bracket is provided at the rear end of the cable management support plate, and the bracket is used for supporting the bottom and connecting and fixing the cable management upper cover plate; The cable management upper cover plate is symmetrically provided with buckles on the left and right sides of one end close to the rear cover plate, and the cable management upper cover plate is provided with an ear plate on one side close to the bracket. The ear plate and the bracket have corresponding openings with lock holes, and lock buckles are installed in the lock holes.

[0014] Furthermore, the cable management upper cover plate and the bracket are both L-shaped structures, and the bracket is provided with a protruding handle for abutting against the cable management upper cover plate.

[0015] Furthermore, the drawer is connected to the module box through a frame assembly, a first slider and a second slider are respectively provided on the left and right sides of the module box, and a buckle for adapting to a limiting column is also provided on one side of the module box close to the second slider.

[0016] Substantial effects of the present invention: 1. In the present invention, the module boxes can be installed in a high-density arrangement through the provided rack assembly, and the wiring rack and cover assembly can be used to quickly carry out wiring and maintenance work, thereby improving the space utilization rate in the box; 2. In the present invention, a rack assembly consisting of a first rack, a second rack and a plurality of third racks is provided, and the plurality of third racks are arranged at equal intervals and installed on the bottom plate and are located between the first rack and the second rack. The racks are directly matched with each other, and the module boxes are arranged and installed by relative limiting mounting surfaces and sliding mounting surfaces. The overall layout arrangement density of the module boxes is high, and the space inside the box is effectively utilized. At the same time, the disassembly and assembly of a single module box is also relatively convenient and quick, and the flexibility and practicality are relatively strong. 3. In the present invention, the wire management frame composed of the wire management ring, the clamping plate, the opening, the card block and the protrusions can be quickly adapted to the positioning plate of the drawer. The wire management structure is very convenient to disassemble and assemble, which is convenient for high-density wire management and wiring. In addition, through the structural design of the wire management support plate and the wire management upper cover plate at the rear end of the cover plate assembly, it is more convenient to manage the wires at the rear end of the wiring box when the drawer moves to the rear end in cooperation with the slide rail assembly. After the wire management upper cover plate is removed, the rear side of the wiring box can be quickly checked. The structural design is simple and reasonable, and the practicality is relatively strong. It has certain use value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic structural perspective view of Example 1.

[0019] Figure 2 This is a schematic diagram of the structural explosion of Example 1.

[0020] Figure 3 This is a three-dimensional schematic diagram of the drawer structure of Example 1.

[0021] Figure 4 For Example 1 Figure 3 A schematic diagram of the enlarged structure of part A in the middle.

[0022] Figure 5 It is a schematic structural stereogram of the slide rail assembly of Example 1.

[0023] Figure 6 It is a schematic diagram of the exploded structure of the slide rail assembly of Example 1.

[0024] Figure 7 It is an enlarged schematic diagram of the structure of the straight movable rail and the curved movable rail of Example 1.

[0025] Figure 8 It is a three-dimensional schematic diagram of the rack assembly structure of Example 1.

[0026] Fig. 9 It is a three-dimensional enlarged schematic diagram of the sliding mounting surface structure of the third frame of Example 1.

[0027] Fig.10 It is a three-dimensional enlarged schematic diagram of the limiting mounting surface structure of the third rack of Example 1.

[0028] Fig.11 It is a three-dimensional enlarged schematic diagram of the cable management frame structure of Example 1.

[0029] Fig.12 This is a schematic diagram of the structural installation of the cable management rack and the positioning plate of Example 1.

[0030] Fig.13 It is a three-dimensional schematic diagram of the cover plate assembly structure of Example 1.

[0031] Fig.14 It is a three-dimensional enlarged schematic diagram of the structure of the module box of Example 1.

[0032] Fig.15This is a schematic diagram of the structure in which the drawer is pulled forward after the box body of Example 1 is opened.

[0033] Fig.16 This is a schematic diagram of the structure of Example 1 where the drawer is pushed backward after the box body and the front cover are opened.

[0034] Fig.17 For Example 1 Fig.16 Enlarged schematic diagram of the structure of part B in the middle.

[0035] Fig.18 This is a schematic three-dimensional diagram of the structure of Example 2 after the box is opened.

[0036] Fig.19 Example 2 Fig.18 Enlarged schematic diagram of the structure of section C in the middle.

[0037] Fig. 20 This is a schematic diagram of the partial arrangement and installation structure of the optical cable entry sleeve of Example 2.

[0038] Fig.21 This is a three-dimensional schematic diagram of the structure of Example 3 after the box is opened.

[0039] In the figure: 1-box, 11-front baffle, 111-transparent visual window, 112-finger buckle slot, 2-drawer, 21-bottom plate, 22-positioning plate, 221-vertical plate, 222-horizontal plate, 223-quick plug hole, 224-U-shaped mouth, 23-wing plate; 3-cover plate assembly, 31-cover plate, 32-rear cover plate, 321-side bar, 33-cable support plate, 331-cable management port, 332-bracket, 3321-protruding handle; 34-cable management cover plate, 341-press buckle, 342-ear plate; 4-slide rail assembly, 41-fixed rail, 411-first slideway, 412-second slideway, 413-third Slide, 4131-recess, 41311-second side protrusion, 41312-side groove; 42-straight movable rail, 421-side clamp; 43-bent movable rail, 431-convex limiting groove, 423-hanging buckle; 5-rack assembly, 51-first rack, 52-second rack, 53-third rack, 531-limiting mounting surface, 532-sliding mounting surface, 500-slide, 501-limiting column; 6-cable management rack, 61-cable management ring, 62-plywood, 63-opening, 64-card, 65-convex point; 7-module box, 71-first slider, 72-second slider, 73-clip. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items. Embodiment 1:

[0042] like Figure 1 , 2 As shown, a rack-mounted high-density optical fiber distribution box includes a box body 1, a drawer 2, a cover assembly 3 and a plurality of module boxes 7. The drawer 2 and the cover assembly 3 are both installed on the box body 1. It is characterized in that a slide rail assembly 4 for multi-stage sliding of the drawer 2 is provided in the box body 1, a rack assembly 5 for slidingly installing a high-density arrayed installation module box 7 is installed on the drawer 2, and a cable management rack 6 for high-density cable management and wiring is also installed on the drawer 2.

[0043] As an implementation method, Figure 3 As shown, the drawer 2 includes a bottom plate 21, a positioning plate 22 and a wing plate 23. The positioning plate 22 is arranged at the front end of the bottom plate 21, and the wing plates 23 are arranged on the left and right sides of the bottom plate 21. The bottom plate 21 is used to install and fix the rack assembly 5, the positioning plate 22 is used to install and fix the cable management rack 6, and the wing plate 23 is used to connect the slide rail assembly 4. The top of the wing plate 23 is provided with a folded edge; like Figure 4 As shown, the positioning plate 22 includes a vertical plate 221 and a horizontal plate 222 , and the vertical plate 221 and the horizontal plate 222 are an integrated L-shaped structure. The positioning plate 22 has quick-insertion holes 223 on both the vertical plate 221 and the horizontal plate 222 , and the positioning plate 22 also has a U-shaped opening 224 on the vertical plate 221 .

[0044] As an implementation method, Figure 5 , 6As shown in FIGS. 7 and 8 , the slide rail assembly 4 includes a fixed rail 41, a straight movable rail 42 and a bent movable rail 43. The fixed rail 41 is connected to the box body 1, and the straight movable rail 42 and the bent movable rail 43 are both connected to the wing plate 23. The straight movable rail 42 is located directly below the bent movable rail 43. The fixed rail 41 is provided with a first slideway 411, a second slideway 412 and a third slideway 413. The first slideway 411 is used to adapt to the top folded edge of the wing plate 23 for horizontal displacement. The second slideway 412 is provided with a first side protrusion 4121 for adapting to the bent movable rail 43. The third slideway 413 is provided with a notch 4131 for adapting to the straight movable rail 42. The middle of the notch 4131 is provided with a second side protrusion 41311. Side grooves 41312 are symmetrically provided at the left and right ends of the side notch 4131. One end of the straight movable rail 42 is provided with a first side clamping block 421 for adapting to the second side protrusion 41311; A protruding limiting groove 431 for adapting to the first side protrusion 4121 is provided on one side of the bent movable rail 43 close to the fixed rail 41 , and a hook 423 for clamping the fixed wing plate 23 is provided on both the straight movable rail 42 and the bent movable rail 43 .

[0045] As an embodiment, the first side clamping block 421, the first side protrusion 4121 and the second side protrusion 41311 are all symmetrical beveled chamfered structures on both sides for easy sliding clamping and limiting. The limiting groove 431 is a middle concave structure with inclined chamfers on both sides. The side grooves 41312 are symmetrically arranged on the left and right sides of the second side protrusion 41311, and the side grooves 41312 close to the second side protrusion 41311 are an inclined chamfered structure.

[0046] As an implementation mode, a plurality of hanging holes with sizes matching the hanging buckles 423 are provided on the wing plate 23 , and the drawer 2 is fixed on the straight movable rail 42 and the bent movable rail 43 through the hanging holes provided on the wing plate 23 .

[0047] As an implementation method, Figure 8 , 9 As shown in FIGS. 10 and 10 , the rack assembly 5 includes a first rack 51, a second rack 52 and seven third racks 53. The first rack 51 and the second rack 52 are respectively mounted on the left and right ends of the bottom plate 21. The plurality of third racks 53 are equidistantly arranged and mounted on the bottom plate 21 and are located between the first rack 51 and the second rack 52. The third rack 53 includes a limiting mounting surface 531 and a sliding mounting surface 532. The limiting mounting surfaces 531 and the sliding mounting surfaces 532 of the first rack 51, the second rack 52 and the third rack 53 are all provided with slide grooves 500.

[0048] As an implementation mode, a module box installation area with eight longitudinal spaces is formed between the first frame 51, the second frame 52 and the third frame 53, and three open slide grooves 500 are arranged longitudinally on the limiting installation surface 531 and the sliding installation surface 532 of the first frame 51, the second frame 52 and the third frame 53. Each module box installation area can be slidably limited to install three module boxes 7, and the frame assembly 5 can install twenty-four module boxes 7 at the same time.

[0049] As an implementation mode, a limiting column 501 is further provided in the tail end of the slide slot 500 provided on the second frame 52 and the limiting mounting surface 531 , and the limiting mounting surface 531 and the sliding mounting surface 532 are respectively provided on the left and right sides of the third frame 53 .

[0050] As an implementation method, Fig.11 , 12 As shown, the cable management frame 6 includes a cable management ring 61 and a clamping plate 62, an opening 63 is provided between the cable management ring 61 and the clamping plate 62, a clamping block 64 for adapting and snapping into the U-shaped opening 224 is fixedly provided at the top of the opening 63, and a protrusion 65 for adapting and snapping into the quick-connect hole 223 is provided on the cable management ring 61 and the clamping plate 62.

[0051] As an implementation method, Fig.13 As shown, the cover plate assembly 3 includes a front cover plate 31, a rear cover plate 32, a cable tray 33 and a cable upper cover plate 34. The front cover plate 31 and the rear cover plate 32 are installed on the top of the box body 1, the cable tray 33 is installed at the rear end of the box body 1, and the cable upper cover plate 34 is located directly above the cable tray 33; The rear cover plate 32 is provided with a side strip 321 for limiting and supporting the upper cover plate 34 for wiring; The cable management support plate 33 is provided with a plurality of cable management openings 331. A bracket 332 is provided at the rear end of the cable management support plate 33. The bracket 332 is used for supporting and connecting the cable management upper cover plate 34 at the bottom. The cable management upper cover 34 is symmetrically provided with buckles 341 on the left and right sides of one end near the rear cover 32, and an ear plate 342 is provided on one side of the cable management upper cover 34 near the bracket 332. The ear plate 342 and the bracket 332 have corresponding openings with lock holes, and lock buckles are installed in the lock holes. The cable management upper cover 34 can be fixed to the cable management support plate 33 through the lock buckles, and can be quickly opened when maintenance or cable management is required.

[0052] As an implementation manner, both the cable arrangement upper cover plate 34 and the bracket 332 are L-shaped structures, and the bracket 332 is provided with a protruding handle 3321 for abutting against the cable arrangement upper cover plate 34 .

[0053] As an implementation method, Fig.14As shown, the drawer 2 is connected to the module box 7 through the frame assembly 5. The left and right sides of the module box 7 are respectively provided with a first slider 71 and a second slider 72. The side of the module box 7 close to the second slider 72 is also provided with a buckle 73 for adapting to the limit column 501.

[0054] As an implementation mode, the module box 7 is an eight-core module box, and the front of the module box 7 is designed with a DLC micro fiber optic adapter with a slot structure, and the rear is designed with a hidden MPO adapter.

[0055] As an implementation manner, a semicircular notch matching the size of the limiting column 501 is provided on the buckle 73, and the buckle 73 is a limiting component made of elastic material.

[0056] As an implementation method, Fig.16 , 17 As shown, the front end of the box body 1 is also provided with a flip-up front cover 11, a transparent visual window 111 is provided in the middle of the front cover 11, finger buckle grooves 112 are symmetrically opened at the left and right ends of the front cover 11, and the finger buckle grooves 112 protrude outwards for the convenience of staff use.

[0057] The present invention arranges 24 module boxes (eight cores) in a high-density arrangement in a 1U space to form a high-density optical fiber distribution box with 192 cores as a whole, which can meet the demand for future bandwidth upgrades. At the same time, the assembly and disassembly of each module box 7 does not affect each other, and the drawer 2 cooperates with the slide rail assembly 4 to drive the module box 7 to slide forward and backward (refer to Fig.15 , 16 ), the limiting structure of the slide rail assembly 4 can slide in sections, so as to facilitate the wiring work at the front and rear ends respectively. Specifically, the wiring work of the module box 7 arranged in a high-density arrangement is carried out through the quick-detachable wire management frame 6. Embodiment 2:

[0058] like Fig.18 , 19 As shown in 20, a rack-mounted high-density optical fiber distribution box includes a box body 1, a drawer 2, a cover assembly 3 and a plurality of module boxes 7. The drawer 2 and the cover assembly 3 are both installed on the box body 1, and is characterized in that a slide rail assembly 4 for multi-stage sliding of the drawer 2 is provided in the box body 1, a rack assembly 5 for slidingly installing a high-density arrayed installation module box 7 is installed on the drawer 2, and a cable management rack 6 for high-density cable management and wiring is also installed on the drawer 2.

[0059] As an implementation manner, the rack assembly 5 includes a first rack 51 , a second rack 52 and three third racks 53 .

[0060] As an implementation mode, the module box 7 is composed of four groups of module boxes (sixteen cores) installed in an arranged manner, one group of three layers of twelve module boxes installed in an up-and-down manner, which together constitute a high-density fiber optic distribution box with 192 cores. The front of the module box 7 is designed with a DLC micro fiber optic adapter with a connecting groove structure, and the rear is designed with a hidden MPO adapter.

[0061] As an embodiment, the cover plate assembly 3 includes a front cover plate, a rear cover plate, and a wire management tray 33, on which a stackable and fixed optical cable entry sleeve 331 is installed, and the optical cable entry sleeve 331 includes an inner sleeve 3311 and an outer sleeve 3312, and the bottom and top of the outer sleeve 3312 are respectively provided with snap-on structures for stacking and adapting the snap-on installation. Embodiment 3:

[0062] like Fig.21 As shown, a rack-mounted high-density optical fiber distribution box includes a box body 1, a drawer 2, a cover assembly 3 and a plurality of module boxes 7. The drawer 2 and the cover assembly 3 are both installed on the box body 1. It is characterized in that a slide rail assembly 4 for multi-stage sliding of the drawer 2 is provided in the box body 1, a rack assembly 5 for slidingly installing a high-density arrayed installation module box 7 is installed on the drawer 2, and a cable management rack 6 for high-density cable management and wiring is also installed on the drawer 2.

[0063] As an implementation manner, the frame assembly 5 includes a first frame 51, a second frame 52 and a third frame 53. The first frame 51 and the second frame 52 are respectively installed at the left and right ends of the drawer 2, and the third frame 53 is installed in the middle of the drawer 2.

[0064] As an implementation mode, the module box 7 is composed of two groups of module boxes (96 cores) installed in an arranged manner, one group of three layers of six module boxes installed in an upper and lower arrangement, which together constitute a high-density fiber optic distribution box with 576 cores. The front of the module box 7 is designed with a DLC micro fiber optic adapter with a connecting groove structure, and the rear is designed with a hidden MPO adapter.

[0065] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to be additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present invention.

Claims

1. A rack-mounted high-density optical fiber distribution box, comprising a box body (1), a drawer (2), a cover assembly (3) and a plurality of module boxes (7), wherein the drawer (2) and the cover assembly (3) are both mounted on the box body (1), characterized in that: The box body (1) is provided with a slide rail assembly (4) for multi-stage sliding of the drawer (2), the drawer (2) is provided with a rack assembly (5) for slidingly installing a high-density arrayed installation module box (7), and the drawer (2) is also provided with a cable management rack (6) for high-density cable management and wiring.

2. According to claim 1, a rack-mounted high-density optical fiber distribution box is characterized in that: The drawer (2) comprises a bottom plate (21), a positioning plate (22) and a wing plate (23), wherein the positioning plate (22) is arranged at the front end of the bottom plate (21), and the wing plate (23) is arranged at the left and right sides of the bottom plate (21); the bottom plate (21) is used to install and fix the rack assembly (5), the positioning plate (22) is used to install and fix the cable management rack (6), and the wing plate (23) is used to connect the slide rail assembly (4), and the top of the wing plate (23) is provided with a folded edge; The positioning plate (22) comprises a vertical plate (221) and a horizontal plate (222), the vertical plate (221) and the horizontal plate (222) being an integrated L-shaped structure, the positioning plate (22) being provided with quick-insertion holes (223) on both the vertical plate (221) and the horizontal plate (222), and the positioning plate (22) being provided with a U-shaped opening (224) on the vertical plate (221).

3. A rack-mounted high-density optical fiber distribution box according to claim 2, characterized in that: The slide rail assembly (4) comprises a fixed rail (41), a straight movable rail (42) and a bent movable rail (43), wherein the fixed rail (41) is connected to the box body (1), the straight movable rail (42) and the bent movable rail (43) are both connected to the wing plate (23), and the straight movable rail (42) is located directly below the bent movable rail (43); The fixed rail (41) is provided with a first slideway (411), a second slideway (412) and a third slideway (413); the first slideway (411) is used to adapt to the top folded edge of the wing plate (23) for horizontal displacement; the second slideway (412) is provided with a first side protrusion (4121) for adapting to the bent movable rail (43); the third slideway (413) is provided with a recess (4131) for adapting to the straight movable rail (42); a second side protrusion (41311) is provided in the middle of the recess (4131); and side grooves (41312) are symmetrically provided at the left and right ends of the side recess (4131); One end of the straight movable rail (42) is provided with a first side clamping block (421) for adapting to the second side protrusion (41311); A protruding limiting groove (431) for adapting to the first side protrusion (4121) is provided on one side of the bent movable rail (43) close to the fixed rail (41).

4. A rack-mounted high-density optical fiber distribution box according to claim 3, characterized in that: The frame assembly (5) comprises a first frame (51), a second frame (52) and a plurality of third frames (53); the first frame (51) and the second frame (52) are respectively mounted on the left and right ends of a bottom plate (21); the plurality of third frames (53) are equidistantly arranged and mounted on the bottom plate (21) and are located between the first frame (51) and the second frame (52); the third frames (53) comprise a position-limiting mounting surface (531) and a sliding mounting surface (532); and the position-limiting mounting surfaces (531) and the sliding mounting surfaces (532) of the first frame (51), the second frame (52) and the third frame (53) are all provided with sliding grooves (500).

5. A rack-mounted high-density optical fiber distribution box according to claim 4, characterized in that: A plurality of open slide grooves (500) are longitudinally arranged on the limiting mounting surfaces (531) and the sliding mounting surfaces (532) of the first frame (51), the second frame (52) and the third frame (53).

6. A rack-mounted high-density optical fiber distribution box according to claim 5, characterized in that: A limiting column (501) is further provided in the tail end of the slide groove (500) provided on the second frame (52) and the limiting installation surface (531), and the limiting installation surface (531) and the sliding installation surface (532) are respectively provided on the left and right sides of the third frame (53).

7. A rack-mounted high-density optical fiber distribution box according to claim 6, characterized in that: The cable management frame (6) comprises a cable management ring (61) and a clamping plate (62), an opening (63) is provided between the cable management ring (61) and the clamping plate (62), a clamping block (64) for adapting to the clamping U-shaped opening (224) is fixedly provided at the top end inside the opening (63), and a protrusion (65) for adapting to the clamping quick socket (223) is provided on both the cable management ring (61) and the clamping plate (62).

8. A rack-mounted high-density optical fiber distribution box according to claim 7, characterized in that: The cover plate assembly (3) comprises a front cover plate (31), a rear cover plate (32), a cable management support plate (33) and a cable management upper cover plate (34); the front cover plate (31) and the rear cover plate (32) are mounted on the top of the box body (1); the cable management support plate (33) is mounted on the rear end of the box body (1); and the cable management upper cover plate (34) is located directly above the cable management support plate (33); The rear cover plate (32) is provided with a side strip (321) for limiting and supporting the upper cover plate (34) for wiring; The cable management support plate (33) is provided with a plurality of cable management openings (331), and a bracket (332) is provided at the rear end of the cable management support plate (33), wherein the bracket (332) is used for supporting the bottom and connecting and fixing the cable management upper cover plate (34); The cable management upper cover plate (34) is symmetrically provided with press buckles (341) on the left and right sides of one end close to the rear cover plate (32), and the cable management upper cover plate (34) is provided with an ear plate (342) on one side close to the bracket (332), and the ear plate (342) and the bracket (332) have corresponding openings with lock holes, and lock buckles are installed in the lock holes.

9. The rack-mounted high-density optical fiber distribution box according to claim 8, characterized in that: The cable management upper cover plate (34) and the bracket (332) are both L-shaped structures, and the bracket (332) is provided with a protruding handle (3321) for abutting against the cable management upper cover plate (34).

10. The rack-mounted high-density optical fiber distribution box according to claim 9, characterized in that: The drawer (2) is connected to the module box (7) via a frame assembly (5); a first slider (71) and a second slider (72) are respectively provided on the left and right sides of the module box (7); and a buckle (73) for adapting to a limit column (501) is further provided on a side of the module box (7) close to the second slider (72).

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