CN111538123B

CN111538123B - Fusion splicer for communication composite optical fiber cable with explosion-proof access mechanism of optic fibre

Info

Publication number: CN111538123B
Application number: CN202010552674.8A
Authority: CN
Inventors: 李坚涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2022-07-22
Anticipated expiration: 2040-06-17
Also published as: CN111538123A

Abstract

The invention discloses a fusion splicer with an optical fiber explosion-proof access mechanism for a communication composite optical fiber cable, and relates to the technical field of optical fiber fusion splicers; in order to provide an explosion-proof effect and accurately control the penetration length of the end to be welded of the optical fiber; the anti-explosion device comprises a base, a welding chamber, two fixing chambers and an anti-explosion mechanism, wherein the outer wall of the bottom of the welding chamber is fixed on the outer wall of the top of the base through screws, and the two fixing chambers are symmetrically arranged on two sides of the welding chamber; the fixed chamber both ends lateral wall homogeneous body formula is provided with rotates the arch, rotates protruding outer wall equal sliding connection and has the fixed chamber support. The invention can conveniently and accurately control the penetration length of the end of the optical fiber to be welded by arranging the fixing chamber, the extension scale mark and other structures, thereby ensuring the welding quality; through setting up first mounting and the second mounting that the formula is connected is inhaled to magnetism, the dismouting of being convenient for when realizing the fixed function of optic fibre, and the location can be helped to fixed bellied design simultaneously to promote the firmness.

Description

Fusion splicer for communication composite optical fiber cable with explosion-proof access mechanism of optic fibre

Technical Field

The invention relates to the technical field of optical fiber fusion splicers, in particular to a fusion splicer with an optical fiber explosion-proof access mechanism for a communication composite optical fiber cable.

Background

The optical fiber fusion splicer is mainly used for construction and maintenance of optical cables in optical communication, and is called as an optical cable fusion splicer; the general working principle is that a high-voltage electric arc is utilized to melt the sections of two optical fibers, and a high-precision movement mechanism is used for gently pushing the sections to fuse the two optical fibers into one optical fiber so as to realize the coupling of an optical fiber mode field; however, when the optical fiber fusion splicer works in an inflammable and explosive environment, the general optical fiber fusion splicer cannot well guarantee the use safety.

Through retrieval, chinese patent application No. CN201520969300.0 discloses a quick-open type explosion-proof optical fiber fusion splicer, which includes: the multifunctional wiring board comprises a safety upper cover, a spring, a connecting rod, a sliding rail, a magnetic block, a hanging block, a hinge, a cantilever, a support, a work indicator lamp, a mounting hole, a fusion chamber, an optical fiber fusion splicer, a power supply, a stop button, a switch, a wire, an electromagnetic device, a fixing frame and a locking port, wherein the mounting hole is used for mounting the multifunctional wiring board, and the optical fiber fusion splicer, the power supply, the stop button and the switch are mounted in the fusion chamber. The fusion chamber of the above patent suffers from the following disadvantages: when the welding operation is carried out, the penetration length of the end to be welded of the optical fiber can not be accurately controlled, and the welding quality is easily influenced.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a fusion splicer with an optical fiber explosion-proof access mechanism for a communication composite optical fiber cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

a fusion splicer with an optical fiber explosion-proof access mechanism for communication composite optical fiber cables comprises a base, a fusion splicing chamber, two fixing chambers and an explosion-proof mechanism, wherein the outer wall of the bottom of the fusion splicing chamber is fixed on the outer wall of the top of the base through screws, and the two fixing chambers are symmetrically arranged on two sides of the fusion splicing chamber; the side walls at the two ends of the fixed chamber are uniformly provided with rotating bulges, the outer walls of the rotating bulges are connected with a fixed chamber bracket in a sliding manner, and the outer wall at the bottom of the fixed chamber bracket is fixed on the outer wall at the top of the base through screws; a fixing mechanism for fixing the optical fiber is arranged in the fixing chamber, and a linkage mechanism for linking the fixing chamber and the fixing mechanism is also arranged in the fixing chamber; threads are processed in the fixed chamber, and extension scale marks which are distributed circumferentially are arranged on the circumferential outer wall of the fixed chamber and the outer wall of one side of the fixed chamber bracket; the upper part and the lower part of the fixed chamber and the upper part and the lower part of the fixed chamber bracket are connected through a hinge and a buckle.

Preferably: the fixing mechanism comprises a first fixing piece and a second fixing piece, two fixing bulges are arranged on the outer wall of the top of the second fixing piece, the fixing bulges are inserted into the inner wall of the first fixing piece, the first fixing piece is matched with the second fixing piece, and the outer wall of one side, adjacent to the second fixing piece, of the first fixing piece is provided with an optical fiber fixing groove and an optical fiber line matching port; the circumferential outer walls of the first fixing piece and the second fixing piece are integrally provided with linkage protrusions; the first fixing piece is connected with the second fixing piece in a magnetic attraction mode.

Further: the linkage mechanism comprises a pushing ring and a guide rod, the first fixing piece and the second fixing piece are respectively connected to the inner walls of the two pushing rings in a sliding mode through linkage protrusions, and the two pushing rings are spliced to form a circular ring structure and are connected to the inner wall of the fixing chamber through threads; one end of each guide rod is integrally arranged on the outer wall of one side of the pushing ring, and the two guide rods are slidably connected to the inner wall of the upper portion and the inner wall of the lower portion of the fixed chamber support respectively.

Further preferred is: the outer wall of one side of the guide rod is connected with a limiting block through threads.

As a preferable aspect of the present invention: the explosion-proof mechanism comprises a sealing strip and two annular sealing gaskets, the upper part and the lower part of the fusion chamber are hinged, fixing plates are uniformly arranged on the outer walls of the fusion chamber on the same side of the upper part and the lower part, and the inner walls of the two fixing plates are both connected with two fixing screws through threads; the two annular sealing gaskets are respectively clamped on the inner walls of the two ends of the welding chamber; the sealing strip is bonded on the outer wall of the bottom of the upper fixing plate; the sealing strip comprises a first rib and a second rib which are distributed in a staggered manner; the second rib is positioned at the center line of the sealing strip, and the two first ribs positioned on the same horizontal plane are symmetrical about the center line of the sealing strip; and the outer walls of two sides of the sealing strip are also integrally provided with reinforcing strips which are uniformly distributed.

Further preferred according to the invention are: and the outer walls of the two ends of the two fixing plates are respectively bonded with four rotating bulges, and the rotating bulges are matched with the welding chamber and the annular sealing gasket in shape.

As a still further scheme of the invention: first mounting one end and the whole bullet type structure that is of second mounting one end concatenation, and the radius that is close to annular seal pad one end is the shortest, the annular seal pad inner wall is the infundibulate structure, and the annular seal pad material is elastic rubber.

On the basis of the scheme: the outer wall of the bottom of the fixing plate is connected with two limiting columns and two limiting columns through threads, and the outer wall of one side of the fixing plate is provided with the same hanging buckle assembly.

On the basis of the scheme, the following steps are preferred: the outer wall of the top of the base is fixedly provided with a cutting chamber through screws, the outer wall of the top of the cutting chamber is provided with a cutting fixing groove, and the cutting fixing groove is matched with the first fixing piece, the second fixing piece and the linkage protrusion; one side of the cutting chamber is provided with an optical fiber cutter component.

It is further preferable on the basis of the foregoing scheme that: the outer wall of one side of the cutting chamber is fixed with a scale plate through a screw, the outer wall of the scale plate is provided with cutting scale marks, and the optical fiber cutter assembly is connected to the outer wall of the scale plate through a scale sliding block in a sliding manner.

The beneficial effects of the invention are as follows:

1. the invention can conveniently and accurately control the penetration length of one end of the optical fiber to be welded by arranging the fixing chamber, the extension scale mark and other structures, thereby ensuring the welding quality; through setting up first mounting and the second mounting that the formula is connected is inhaled to magnetism, the dismouting of being convenient for when realizing fixed function to optic fibre, and the location can be helped to fixed bellied design simultaneously to promote the firmness.

2. By arranging the fixed chamber bracket, translation can be realized along with rotation of the fixed chamber in a splicing state based on guide of the guide rod, so that the first fixing piece and the second fixing piece are driven to translate, and the purpose of controlling the extension or retraction of the optical fiber is achieved; because the pushing ring is connected to the fixed chamber and the fixed chamber bracket through threads and the guide rod, the relative stability among the fixed chamber, the fixed chamber bracket and the pushing ring is ensured, and the phenomenon of losing parts is avoided; simultaneously, the fixing mechanism is convenient to disassemble and assemble, and the use is improved.

3. By arranging the limiting block, the limiting effect can be achieved on the guide rod, the guide rod is prevented from slipping on the fixed chamber support, the displacement distance of the pushing ring is controlled, the first fixing piece and the second fixing piece are prevented from being excessively extended, and the reliability is further improved; through setting up scale plate, cutting scale mark isotructure, the precision of the control cutting of being convenient for provides convenience for follow-up work.

4. The second ribs and the first ribs which are distributed in a staggered mode are arranged, so that the sealing can be matched and sealed in a deformation mode when the welding chamber is fixed through the fixing plate, enough deformation space is provided due to the staggered distribution, and meanwhile, the regularity and firmness of the deformation of the sealing strip are guaranteed due to the arrangement of the reinforcing strips and the position relation between the first ribs and the center lines of the sealing strip and the second ribs and the center lines of the sealing strip; based on the design of the sealing strip and the annular sealing gasket, a sealed space can be provided for the welding chamber, the contact with external inflammable and explosive gases and the like is avoided, and the use safety is improved; the sealing performance of the side edge of the sealing strip is convenient to strengthen by arranging the rotating protrusion, and the explosion-proof effect is further improved.

5. By the arrangement of the first fixing piece, the second fixing piece and the annular sealing gasket, the sealing performance can be guaranteed, the first fixing piece and the second fixing piece can conveniently penetrate into the annular sealing gasket, and the effect of improving the connection firmness is achieved; through setting up the hanging buckle subassembly, can select to hang the buckle subassembly based on different environmental conditions and fix the butt fusion room, reach quick assembly disassembly's purpose.

Drawings

Fig. 1 is a schematic structural diagram of an integral fusion splicer for a communication composite optical fiber cable with an optical fiber explosion-proof access mechanism, according to the present invention;

FIG. 2 is a schematic structural diagram of a fusion welding chamber of a fusion splicer for a composite optical fiber cable for communication with an optical fiber explosion-proof access mechanism according to the present invention;

fig. 3 is a schematic structural diagram of a fusion welding chamber of a fusion welding machine for a communication composite optical fiber cable with an optical fiber explosion-proof access mechanism, which is partially cut away;

fig. 4 is a schematic structural diagram of a cross-sectional view of a fusion splicer fixing chamber for a communication composite optical fiber cable with an optical fiber explosion-proof access mechanism according to the present invention;

fig. 5 is a schematic structural diagram of a cutting chamber of a fusion splicer for a composite optical fiber cable for communication provided with an optical fiber explosion-proof access mechanism.

In the figure: the base, 2 the welding chamber, 3 the fixed rooms, 4 guide bars, 5 the cutting chambers, 6 the cutting fixed slot, 7 optic fibre sword subassemblies, 8 the fixed plate, 9 spacing posts, 10 string knot subassemblies, 11 set screws, 12 supplementary fender pads, 13 annular sealing pad, 14 sealing strip, 15 first rib, 16 second rib, 17 the stiffener, 18 first mounting, 19 second mounting, 20 optic fibre fixed slots, 21 rotate the arch, 22 extension scale mark, 23 propelling movement ring, 24 linkage arch, 25 fixed room support, 26 fixed arch, 27 the stopper, 28 optic fibre line adaptation mouth, 29 scale plates, 30 cutting scale mark.

Detailed Description

The technical solution of the present patent will be further described in detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by one of ordinary skill in the art as appropriate.

A fusion splicer with an optical fiber explosion-proof access mechanism for communication composite optical fiber cables is shown in figure 1 and comprises a base 1, a fusion splicing chamber 2, two fixing chambers 3 and an explosion-proof mechanism; the outer wall of the bottom of the welding chamber 2 is fixed on the outer wall of the top of the base 1 through screws, and the two fixing chambers 3 are symmetrically arranged on two sides of the welding chamber 2; the side walls of two ends of the fixed chamber 3 are uniformly provided with rotating bulges 21 in a body mode, the outer walls of the rotating bulges 21 are connected with a fixed chamber bracket 25 in a sliding mode, and the outer wall of the bottom of the fixed chamber bracket 25 is fixed on the outer wall of the top of the base 1 through screws; a fixing mechanism for fixing the optical fiber is arranged in the fixing chamber 3, and a linkage mechanism for linking the fixing chamber 3 and the fixing mechanism is also arranged in the fixing chamber 3; threads are processed inside the fixed chamber 3; the fixed chamber 3 can rotate and drive the linkage mechanism to translate through threads, so as to drive the fixed mechanism to translate, and the circumferential outer wall of the fixed chamber 3 and the outer wall of one side of the fixed chamber bracket 25 are provided with circumferentially distributed elongation scale marks 22; the upper part and the lower part of the fixed chamber 3 and the upper part and the lower part of the fixed chamber bracket 25 are connected through hinges and buckles; through setting up fixed chamber 3, elongation scale mark 22 isotructure, can be convenient for the accuracy treat the deep length of butt fusion one end to accuse optic fibre to guarantee the butt fusion quality.

To facilitate securing the optical fiber; as shown in fig. 4, the fixing mechanism includes a first fixing member 18 and a second fixing member 19, two fixing protrusions 26 are disposed on an outer wall of a top of the second fixing member 19, the fixing protrusions 26 are inserted into an inner wall of the first fixing member 18, the first fixing member 18 is adapted to the second fixing member 19, and an optical fiber fixing groove 20 and an optical fiber line adapting opening 28 are formed in an outer wall of one side of the first fixing member 18 adjacent to the second fixing member 19; the circumferential outer walls of the first fixing piece 18 and the second fixing piece 19 are integrally provided with linkage protrusions 24; the connection may be detachable, such as plug-in connection or snap-fit connection, in this embodiment, preferably, the first fixing element 18 is magnetically connected to the second fixing element 19; through setting up first mounting 18 and the second mounting 19 that the formula is connected are inhaled to magnetism, the dismouting of being convenient for when realizing fixed function to optic fibre, and the design of fixed arch 26 can help the location simultaneously to promote the firmness.

In order to facilitate the formation of the linkage effect; as shown in fig. 4, the linkage mechanism includes a pushing ring 23 and a guide rod 4, the first fixing member 18 and the second fixing member 19 are respectively slidably connected to the inner walls of the two pushing rings 23 through a linkage protrusion 24, and the two pushing rings 23 are spliced to form a circular ring structure and are connected to the inner wall of the fixing chamber 3 through threads; one ends of the two guide rods 4 are respectively and integrally arranged on the outer wall of one side of the pushing ring 23, and the two guide rods 4 are respectively and slidably connected to the inner wall of the upper part and the inner wall of the lower part of the fixed chamber bracket 25; by arranging the fixed chamber bracket 25, the optical fiber can be translated based on the guide of the guide rod 4 along with the rotation of the fixed chamber 3 in a splicing state, so that the first fixing piece 18 and the second fixing piece 19 are driven to translate, and the purpose of controlling the extension or retraction of the optical fiber is achieved; because the pushing ring 23 is connected to the fixed chamber 3 and the fixed chamber bracket 25 through the threads and the guide rod 4, the relative stability among the fixed chamber 3, the fixed chamber bracket 25 and the pushing ring 23 is ensured, and the loss of parts is avoided; meanwhile, the fixing mechanism is convenient to disassemble and assemble, and the use is convenient.

In order to improve reliability; as shown in fig. 4, the outer wall of one side of the guide rod 4 is connected with a limit block 27 through threads; through setting up stopper 27, can play spacing effect to guide bar 4, avoid guide bar 4 slippage on fixed room support 25, control the displacement distance that promotes ring 23 simultaneously, avoid first mounting 18 and second mounting 19 overextension, further promote the reliability.

In order to ensure the explosion-proof performance; as shown in fig. 2 and 3, the explosion-proof mechanism comprises a sealing strip 14 and two annular sealing gaskets 13, the upper part and the lower part of the welding chamber 2 are hinged, the outer walls of the welding chamber 2 on the same side of the upper part and the lower part are integrally provided with fixing plates 8, and the inner walls of the two fixing plates 8 are connected with two fixing screws 11 through threads; the two annular sealing gaskets 13 are respectively clamped on the inner walls of the two ends of the welding chamber 2; the sealing strip 14 is adhered to the outer wall of the bottom of the upper fixing plate 8; the sealing strip 14 comprises a first rib 15 and a second rib 16, and the first rib 15 and the second rib 16 are distributed in a staggered way; the second rib 16 is positioned at the central line of the sealing strip 14, and the two first ribs 15 positioned on the same horizontal plane are symmetrical about the central line of the sealing strip 14; the outer walls of the two sides of the sealing strip 14 are also integrally provided with reinforcing strips 17 which are uniformly distributed; by arranging the second ribs 16 and the first ribs 15 which are distributed in a staggered manner, the sealing can be matched and sealed in a deformation manner when the welding chamber 2 is fixed through the fixing plate 8, sufficient deformation space is provided by the staggered distribution, and meanwhile, the regularity and firmness of the deformation of the sealing strip 14 are ensured by the arrangement of the reinforcing strips 17 and the position relation of the first ribs 15 and the second ribs 16 with the central line of the sealing strip 14; based on the design of sealing strip 14 and annular sealing pad 13, can avoid contacting external flammable explosive gas etc. for providing sealed space in the welding chamber 2, promote safe in utilization.

In order to further improve the sealing performance; as shown in fig. 2 and 3, four rotating protrusions 12 are respectively bonded to the outer walls of the two ends of the two fixing plates 8, and the rotating protrusions 12 are matched with the welding chamber 2 and the annular sealing gasket 13 in shape; the sealing performance of the side edge of the sealing strip 14 is enhanced conveniently by arranging the rotating bulge 12, and the explosion-proof effect is further improved.

To facilitate penetration into the interior of the fusion chamber 2; as shown in fig. 3 and 4, one end of the first fixing member 18 and one end of the second fixing member 19 are integrally spliced to form a bullet-shaped structure, the radius of one end close to the annular sealing gasket 13 is the shortest, the inner wall of the annular sealing gasket 13 is in a funnel-shaped structure, and the annular sealing gasket 13 is made of elastic rubber; through the structure that sets up first mounting 18, second mounting 19 and annular gasket 13, can be when guaranteeing sealing performance, in being convenient for first mounting 18 and second mounting 19 penetrate annular gasket 13, also possess the effect that promotes the firm in connection degree simultaneously.

In order to improve the practicability; as shown in fig. 2, the outer wall of the bottom of the upper fixing plate 8 is connected with two limiting posts 9 through threads, the outer wall of one side of each of the two fixing plates 8 is provided with the same hanging and buckling assembly 10, and the limiting posts 9 are arranged to achieve a limiting effect and prevent the welding chamber 2 from being damaged due to over-tightening of the fixing screws 11; through setting up hanging buckle assembly 10, can select to hang buckle assembly 10 and fix butt fusion room 2 based on different environmental conditions, reach quick assembly disassembly's purpose.

To facilitate cutting; as shown in fig. 1 and 5, a cutting chamber 5 is fixed on the outer wall of the top of the base 1 through screws, a cutting fixing groove 6 is formed in the outer wall of the top of the cutting chamber 5, and the cutting fixing groove 6 is matched with a first fixing member 18, a second fixing member 19 and a linkage protrusion 24; one side of the cutting chamber 5 is provided with an optical fiber cutter component 7; through setting up structures such as cutting room 5, optic fibre knife tackle spare 7, be convenient for fix a position the cutting to the optical fiber head, promoted the practicality.

To facilitate control of the cut length; as shown in fig. 1 and 5, a scale plate 29 is fixed on the outer wall of one side of the cutting chamber 5 through screws, cutting scale lines 30 are arranged on the outer wall of the scale plate 29, and the optical fiber cutter assembly 7 is slidably connected to the outer wall of the scale plate 29 through a scale slider; through setting up structures such as scale 29, cutting scale mark 30, the precision of the control cutting of being convenient for provides convenience for follow-up work.

When the optical fiber cutting device is used, a user places an optical fiber in the optical fiber fixing groove 20 and the optical fiber line adapting opening 28, positions the first fixing piece 18 and the second fixing piece 19 based on the fixing protrusion 26 and then connects the first fixing piece 18 and the second fixing piece 19 in a magnetic attraction manner, the user can place the combined first fixing piece 18 and second fixing piece 19 in the cutting fixing groove 6 on the cutting chamber 5, and the position of the optical fiber cutter assembly 7 is adjusted based on the scale plate 29 to cut the optical fiber; a user can install the first fixing piece 18 and the second fixing piece 19 which are provided with optical fibers to be welded in the two pushing rings 23, close the fixing chamber 3 and the fixing chamber bracket 25 through a buckle, drive the pushing rings 23 to translate under the guidance of the guide rod 4 by rotating the fixing chamber 3, and judge the extension amount through the extension amount scale lines 22; in addition, when closing the welding chamber 2, the user selects a fixing mode according to the external environment, such as fixing by the fixing screw 11 or/and the hanging buckle assembly 10; when the fixing screw 11 is screwed, the first rib 15 and the second rib 16 on the sealing strip 14 are matched with the welding chamber 2 in a deformation mode to be closed, and sealing is realized; because first mounting 18 one end and 19 one ends concatenations of second mounting are whole to be bullet type structure, annular sealing gasket 13 inner wall is the infundibulate structure, has not only ensured sealing performance when first mounting 18 and second mounting 19 insert, has reduced the annular sealing gasket 13 of insertion resistance again, also possesses the effect that promotes the firm in connection degree simultaneously.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The fusion splicer with the optical fiber explosion-proof access mechanism for the communication composite optical fiber cable comprises a base (1), a fusion splicing chamber (2), two fixing chambers (3) and an explosion-proof mechanism, and is characterized in that the outer wall of the bottom of the fusion splicing chamber (2) is fixed on the outer wall of the top of the base (1) through screws, and the two fixing chambers (3) are symmetrically arranged on two sides of the fusion splicing chamber (2); the side walls of two ends of the fixed chamber (3) are uniformly provided with rotating bulges (21) in a body mode, the outer walls of the rotating bulges (21) are connected with fixed chamber supports (25) in a sliding mode, and the outer wall of the bottom of each fixed chamber support (25) is fixed to the outer wall of the top of the base (1) through screws; a fixing mechanism for fixing the optical fiber is arranged in the fixing chamber (3), and a linkage mechanism for linking the fixing chamber (3) and the fixing mechanism is also arranged in the fixing chamber (3); threads are processed in the fixed chamber (3), and extension scale marks (22) which are distributed circumferentially are arranged on the circumferential outer wall of the fixed chamber (3) and the outer wall of one side of the fixed chamber bracket (25); the upper part and the lower part of the fixed chamber (3) and the upper part and the lower part of the fixed chamber bracket (25) are connected through a hinge and a buckle, the explosion-proof mechanism comprises a sealing strip (14) and two annular sealing gaskets (13), the upper part and the lower part of the fusion welding chamber (2) are hinged, the outer walls of the upper part and the lower part of the fusion welding chamber (2) on the same side are integrally provided with fixed plates (8), and the inner walls of the two fixed plates (8) are connected with two fixed screws (11) through threads; the two annular sealing gaskets (13) are respectively clamped on the inner walls of the two ends of the welding chamber (2); the sealing strip (14) is adhered to the outer wall of the bottom of the upper fixing plate (8); the sealing strip (14) comprises a first rib (15) and a second rib (16), and the first rib (15) and the second rib (16) are distributed in a staggered manner; the second rib (16) is positioned at the central line position of the sealing strip (14), and the two first ribs (15) positioned on the same horizontal plane are symmetrical about the central line of the sealing strip (14); the outer walls of two sides of the sealing strip (14) are also integrally provided with reinforcing strips (17) which are uniformly distributed, the outer walls of two ends of the two fixing plates (8) are respectively bonded with four rotating protrusions (21), the rotating protrusions (21) are matched with the shapes of the fusion welding chamber (2) and the annular sealing gasket (13), the fixing mechanism comprises a first fixing piece (18) and a second fixing piece (19), the outer wall of the top of the second fixing piece (19) is provided with two fixing protrusions (26), the fixing protrusions (26) are inserted into the inner wall of the first fixing piece (18), the first fixing piece (18) is matched with the second fixing piece (19), and the outer wall of one side, adjacent to the second fixing piece (19), of the first fixing piece (18) is provided with the same optical fiber fixing groove (20) and the same optical fiber line matching port (28); the outer walls of the circumferences of the first fixing piece (18) and the second fixing piece (19) are integrally provided with linkage protrusions (24); first mounting (18) are inhaled the formula with second mounting (19) magnetism and are connected, first mounting (18) one end is the bullet type structure with second mounting (19) one end concatenation is whole, and is close to the radius that annular gasket (13) one end is the shortest, annular gasket (13) inner wall is infundibulate structure, and annular gasket (13) material is elastic rubber, is located the top fixed plate (8) bottom outer wall has two spacing posts (9) through threaded connection, two fixed plate (8) one side outer wall all is provided with same string of knot subassembly (10), link gear includes propelling movement ring (23) and guide bar (4), and first mounting (18) and second mounting (19) are respectively through linkage arch (24) sliding connection in two propelling movement ring (23) inner walls, and two propelling movement ring (23) concatenations constitute the ring structure, and is connected with the inner wall of the fixed chamber (3) through threads; one end of each guide rod (4) is integrally arranged on the outer wall of one side of the pushing ring (23), and the two guide rods (4) are respectively connected to the inner wall of the upper portion and the inner wall of the lower portion of the fixed chamber support (25) in a sliding mode.

2. A fusion splicer with an optical fiber explosion-proof access mechanism for communication composite optical fiber cables and optical cables as claimed in claim 1, characterized in that the outer wall of one side of the guide rod (4) is connected with a limit block (27) through threads.

3. The fusion splicer with the optical fiber explosion-proof access mechanism for the communication composite optical fiber and optical cable according to claim 2, wherein a cutting chamber (5) is fixed on the outer wall of the top of the base (1) through screws, a cutting fixing groove (6) is formed in the outer wall of the top of the cutting chamber (5), and the cutting fixing groove (6) is matched with the first fixing piece (18), the second fixing piece (19) and the linkage protrusion (24); an optical fiber cutter component (7) is arranged on one side of the cutting chamber (5).

4. The fusion splicer with the optical fiber explosion-proof access mechanism for the communication composite optical fiber cable according to claim 3, wherein a scale plate (29) is fixed on the outer wall of one side of the cutting chamber (5) through screws, cutting scale lines (30) are arranged on the outer wall of the scale plate (29), and the optical fiber knife assembly (7) is slidably connected to the outer wall of the scale plate (29) through a scale slider.