CN108879255B - Quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection - Google Patents
Quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection Download PDFInfo
- Publication number
- CN108879255B CN108879255B CN201811061183.2A CN201811061183A CN108879255B CN 108879255 B CN108879255 B CN 108879255B CN 201811061183 A CN201811061183 A CN 201811061183A CN 108879255 B CN108879255 B CN 108879255B
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- China
- Prior art keywords
- optical fiber
- connector
- cable
- fiber channel
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 115
- 238000005065 mining Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3817—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres containing optical and electrical conductors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
- G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a quick-plug type mining flameproof high-voltage cable connector with optical fiber connection, which comprises a connecting end and a middle connector body, wherein the connecting end is arranged on a cable, the middle connector body is arranged at the connecting end, a connector corresponding to a cable core of the cable is arranged on the connecting end, an optical fiber leading-out hole is formed in the side face of the connecting end, the optical fiber leading-out hole is connected with the middle connector body through a detachable optical fiber channel, mounting heads matched with the connector of the corresponding cable core are arranged at two ends of the middle connector body, an integrally formed middle cavity body is arranged on the side face of the middle connector body, an optical fiber channel mounting hole is formed at two ends of the middle cavity body, and the optical fiber channel and the middle cavity body are of a quick-plug type structure. The invention relates to a quick-plug type mining flameproof high-voltage cable connector with optical fiber connection, which has the advantages of simple structure, convenient use, reliable connection between optical fibers and convenient disassembly, and can meet the requirement of the whole flameproof performance of the connector on the premise of meeting the test of the optical fiber cable.
Description
Technical Field
The invention relates to the field of cable application, in particular to a quick-plug type mining flameproof high-voltage cable connector with optical fiber connection.
Background
In the product structure of the current mining cable industry, the cable core mainly comprises a control wire, a power wire and a ground wire, so that the basic use requirement can be met. In the use process, the mining flameproof high-voltage cable connector matched with the common mining cable can meet the plugging connection of a power line, a control line and a ground line.
However, with the current automatic update and upgrade of production equipment, data information communication is increasingly widely applied to the control of the equipment. Photoelectric composite cables are also increasingly used in the coal industry, where not only are simple power, control and ground lines but also optical fibers for communication are added. Conventional connectors can only meet the common cable connection, including power lines, control lines, ground lines, and the like. Because of the limited interior space and the fiber optic connection that requires manual installation of the two ends of the optical fiber together by fusion or fiber optic connectors, the use of ribbon fiber cables is not possible. Conventional mining cable connectors are no longer satisfactory for use. Moreover, there is no quick-connect connector currently available on the market for mining cables with optical fibers.
Disclosure of Invention
The invention aims to: the invention aims to solve the defects in the prior art, and provides a quick-plug type mining flameproof high-voltage cable connector with optical fiber connection, wherein an optical fiber is led out of the connector, and an optical fiber special channel and an optical fiber mounting cavity are arranged outside the connector, so that the position of an optical fiber connector is ensured to be far away from a live conductor. Meanwhile, the optical fibers are convenient to disassemble and connect, and the fiber connector with the middle part is quickly disassembled and assembled. In addition, because the optical fiber access holes are sealed, the connector body can still meet the requirement of explosion-proof performance.
The technical scheme is as follows: the invention discloses a quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection, which comprises a connecting end and a middle connector body, wherein the connecting end is arranged on a cable, the middle connector body is arranged at the connecting end, a connector corresponding to a cable core is arranged on the connecting end, an optical fiber leading-out hole is formed in the side face of the connecting end, the optical fiber leading-out hole is connected with the middle connector body through a detachable optical fiber channel, mounting heads matched with the connector of the corresponding cable core are arranged at two ends of the middle connector body, an integrally formed middle cavity body is arranged on the side face of the middle connector body, an optical fiber channel mounting hole is formed in two ends of the middle cavity body, and the optical fiber channel and the middle cavity body are of detachable structures.
Further, the optical fiber leading-out hole on the cable connecting end is a threaded column protruding out of the side surface of the connecting end, a through hole is formed in the center of the threaded column, and a hole groove corresponding to the threaded rotation is formed in the connection position of the optical fiber channel and the optical fiber leading-out hole.
Further, the optical fiber channel is arranged in the handle, the handle is of an L-shaped structure, the vertical part of the handle is arranged on the optical fiber leading-out hole, so that the optical fiber channel is communicated with the optical fiber leading-out hole, the horizontal part of the handle is of a disassembly structure, the optical fiber channel on the horizontal part is provided with a sealing cover, and a connecting agent or a sealing ring is arranged at the connecting position between the sealing cover and the optical fiber channel; the optical fiber channel is a horizontal optical fiber groove at the horizontal part of the handle, the optical fiber channel is a through hole at the vertical part of the handle, and the optical fiber channel is inserted into the optical fiber channel mounting hole on the middle cavity through the horizontal part of the handle.
Further, an optical fiber sealing ring is arranged in the optical fiber channel mounting hole.
Further, the middle cavity is sealed through a cavity end cover, the cavity end cover is connected through a detachable connecting mechanism, and a connecting agent or a sealing ring is arranged at the connecting position of the cavity end cover and the middle cavity.
Preferably, the detachable connection mechanism is a bolt.
Further, the connector corresponding to the cable core and the matched mounting head are of a plug structure, and the plug structure consists of a plug wiring terminal and a slot wiring terminal.
Furthermore, a sealing layer is arranged at the connection position of the cable connection end and the cable, and the sealing layer is formed by pouring epoxy resin.
Further, the tail end of the optical fiber channel arranged on the middle cavity is provided with a taper.
The beneficial effects are that: according to the mining explosion-proof high-voltage cable connector with the optical fiber connection, through setting of the optical fiber channel and the middle cavity, the optical fiber connector position connector is far away from the electrified conductor, the anti-interference capability of the optical fiber connector is improved, the optical fiber data transmission speed is guaranteed, meanwhile, the optical fibers are convenient to disassemble, the cable connector with the optical fiber in the middle is convenient to insert and pull out quickly, the optical fiber channel is prevented from being damaged in the installation process by the sealing cover arranged on the optical fiber channel, the optical fiber construction, the installation and the disassembly are more convenient through setting of the middle cavity, the tail end of the optical fiber channel is provided with the taper, the installation is convenient in the middle cavity, the whole cable connector is positioned in a closed cavity, the optical fiber extraction position is also positioned in the sealing position, and the explosion-proof requirement of the connector is met; simple structure, convenient to use makes the connection between the optic fibre reliable, convenient to detach improves the interference killing feature of optic fibre joint position, improves the transmission of data.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of the connection of the fiber optic exit aperture of FIG. 1 to a handle;
FIG. 3 is an enlarged view of a portion of the connection of the handle of FIG. 1 with a fibre channel mounting hole;
1. the optical fiber connector comprises a connecting end 2, a slot wiring terminal 3, an intermediate connecting body 4, a plug wiring terminal 5, an optical fiber leading-out hole 6, an optical fiber channel 7, a handle 71, a sealing cover 8, an intermediate cavity 9, an optical fiber channel mounting hole 10, an optical fiber sealing ring 11, a cavity end cover 12 and a sealing layer.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to specific embodiments.
The utility model provides a quick-plugging type mining flameproof high-voltage cable connector with optical fiber connection as shown in fig. 1 to 3, the connector is including installing link 1 on the cable to and the intermediate junction body 3 of link 1, be equipped with the corresponding joint of cable core on the link 1, link 1 side is equipped with optic fibre and draws forth hole 5, optic fibre draws forth hole 5 and links to each other with intermediate junction body 3 through detachable optical fiber channel 6, intermediate junction body 3 both ends are equipped with the supporting installation head of connecting with corresponding cable core, and intermediate junction body's side is equipped with integrated into one piece's intermediate cavity 8, intermediate cavity 8 both ends are equipped with optical fiber channel mounting hole 9, optical fiber channel 6 and intermediate cavity 8 are detachable construction.
Further optimization as an example:
in this example, the fiber lead-out hole 5 on the cable connection end 1 is a threaded column protruding out of the side surface of the connection end 1, a through hole is arranged in the center of the threaded column, and a hole groove corresponding to the threaded rotation is arranged at the connection position of the fiber channel 6 and the fiber lead-out hole 5.
In this example, the optical fiber channel 6 is disposed in the handle 7, the handle 7 has an L-shaped structure, a vertical portion of the handle 7 is mounted on the optical fiber extraction hole 5, so that the optical fiber channel 6 is communicated with the optical fiber extraction hole 5, a horizontal portion of the handle 7 has a disassembly structure, a sealing cover 71 is disposed on the optical fiber channel 6 at the horizontal portion, and a connecting agent or a sealing ring is disposed at a connecting position between the sealing cover 71 and the optical fiber channel 6; the optical fiber channel 6 is a horizontal optical fiber groove at the horizontal part of the handle 7, the optical fiber channel 6 is a through hole at the vertical part of the handle 7, and the optical fiber channel 6 is inserted into the optical fiber channel mounting hole 9 on the middle cavity 8 through the horizontal part of the handle 7.
In this example, an optical fiber sealing ring 10 is disposed in the optical fiber passage mounting hole 9.
In this example, the middle cavity 8 is sealed by a cavity end cover 11, the cavity end cover 11 is connected by a detachable connection mechanism, and a connection agent or a sealing ring is arranged at the connection position of the cavity end cover 11 and the middle cavity 8.
In this example, the detachable connection mechanism is a bolt.
In this example, the connector corresponding to the cable core and the matched mounting head are in a plug structure, and the plug structure is composed of a plug wiring terminal 4 and a slot wiring terminal 2.
In this example, a sealing layer 12 is disposed at the connection position between the cable connection end 1 and the cable, and the sealing layer 12 is formed by pouring epoxy resin.
In this example, the end of the fiber channel 6 mounted on the middle cavity 8 is provided with a taper, so that the fiber channel 6 is conveniently inserted into the cavity hole in the middle.
In addition, the cable connection end 1 is inserted into the intermediate connector 3, the cable connection end 1 is provided with a slot connecting terminal 2 corresponding to a cable core, and the intermediate connector 3 is provided with a plug connecting terminal 4 corresponding to the slot connecting terminal 2.
When the cable connector is used, the cable connecting end 1 is firstly arranged on a cable, a cable core is connected with a corresponding slot binding post 2, optical fibers are led out from an optical fiber leading-out hole 5, a sealing layer 12 is formed by pouring epoxy resin to the position of the cable connecting end 1, which is provided with the binding post and the optical fiber leading-out hole 5, the cable and the connecting end 1 are sealed, the optical fibers pass through a through hole in the vertical part of the handle 7, the handle 7 is arranged on the optical fiber leading-out hole 5, the optical fibers are fixed on a horizontal optical fiber groove of the handle 7 through the sealing cover 71, the sealing layer 12 is fixed, an optical fiber channel 6 is used as a limit, the cable with the connecting end 1 is inserted into an intermediate connector 3, the plug binding post 4 in the intermediate connector is in one-to-one correspondence with the slot binding post 2, the communication of the cable core is realized, the optical fibers pass through the optical fiber channel mounting hole 9, the horizontal end of the handle 7 is inserted into the optical fiber channel mounting hole 9 on the intermediate cavity 8, the optical fibers are arranged in the intermediate cavity 8, the optical fibers are welded or the optical fibers are arranged together through the sealing layer, the optical fiber connecting end is arranged in the intermediate cavity 8, the optical fiber connecting position and the intermediate cavity 11 are sealed, and the optical fiber connector is connected; when the connector needs to be disassembled, the optical fiber connector is only required to be disassembled at present, and then the two-point cable connecting end 1 is separated from the middle connector 3, so that quick insertion is realized, and the use is convenient.
In summary, through the setting of fibre channel and middle cavity, make fibre splice position connector keep away from electrified conductor, improve fibre splice's interference killing feature, guarantee optical fiber data transmission speed, simultaneously, be convenient for tear open between the optic fibre, realize the cable connector quick plug that the centre has optic fibre, be equipped with sealed lid on through fibre channel, prevent that fibre channel from causing the damage of optic fibre in the installation, it is more convenient to make the optic fibre construction through the setting of middle cavity, install and dismantle, fibre channel end is equipped with the tapering, be convenient for install in middle cavity, whole cable connector all is in a confined cavity, the optic fibre draws the position and also is in sealed position, satisfy the explosion-proof requirement of connector.
The present invention is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalents and modifications can be made to the above-mentioned embodiments without departing from the scope of the invention.
Claims (1)
1. The utility model provides a quick plug type takes mining flame proof formula high tension cable connector of fiber connection which characterized in that: the connector comprises a connecting end and a middle connecting body, wherein the connecting end is arranged on a cable, a connector corresponding to a cable core of the cable is arranged on the connecting end, an optical fiber leading-out hole is formed in the side face of the connecting end, the optical fiber leading-out hole is connected with the middle connecting body through a detachable optical fiber channel, mounting heads matched with the connector of the corresponding cable core of the cable are arranged at two ends of the middle connecting body, an integrally formed middle cavity is formed in the side face of the middle connecting body, an optical fiber channel mounting hole is formed at two ends of the middle cavity, and the optical fiber channel and the middle cavity are of a quick-plug structure;
the optical fiber channel is arranged in the handle, the handle is of an L-shaped structure, the vertical part of the handle is arranged on the optical fiber leading-out hole, so that the optical fiber channel is communicated with the optical fiber leading-out hole, the horizontal part of the handle is of a disassembly structure, the optical fiber channel on the horizontal part is provided with a sealing cover, and a connecting agent or a sealing ring is arranged at the connecting position between the sealing cover and the optical fiber channel; the optical fiber channel is a horizontal optical fiber groove at the horizontal part of the handle, the optical fiber channel is a through hole at the vertical part of the handle, and the optical fiber channel is inserted into an optical fiber channel mounting hole on the middle cavity through the horizontal part of the handle;
the middle cavity is sealed by a cavity end cover, the cavity end cover is connected by a detachable connecting mechanism, and a connecting agent or a sealing ring is arranged at the connecting position of the cavity end cover and the middle cavity;
the connector corresponding to the cable core and the matched mounting head are of a plug structure, and the plug structure consists of a plug wiring terminal and a slot wiring terminal;
a sealing layer is arranged at the connection position of the connection end and the cable, and the sealing layer is formed by pouring epoxy resin;
the tail end of the optical fiber channel arranged on the middle cavity is provided with a taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061183.2A CN108879255B (en) | 2018-09-12 | 2018-09-12 | Quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061183.2A CN108879255B (en) | 2018-09-12 | 2018-09-12 | Quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108879255A CN108879255A (en) | 2018-11-23 |
| CN108879255B true CN108879255B (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061183.2A Active CN108879255B (en) | 2018-09-12 | 2018-09-12 | Quick-plug type mining flame-proof type high-voltage cable connector with optical fiber connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108879255B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378618B (en) * | 2018-11-29 | 2024-07-12 | 天津华宁电子有限公司 | Quick-plug type mining flame-proof type optical fiber cable connector |
| CN111092312A (en) * | 2019-12-16 | 2020-05-01 | 国网山东省电力公司阳谷县供电公司 | Quick line connector for electric power line connection |
| CN111146624B (en) * | 2020-01-15 | 2024-07-09 | 上海翔洲电气科技有限公司 | Mining flameproof optical fiber composite high-low voltage cable connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772081A (en) * | 1986-09-15 | 1988-09-20 | Tsi Incorporated | Fiber optic connector assembly |
| CN201134525Y (en) * | 2007-12-21 | 2008-10-15 | 上海波汇通信科技有限公司 | High-voltage power cable terminal |
| CN102810837A (en) * | 2012-03-16 | 2012-12-05 | 远东电缆有限公司 | Intermediate splicing closure and splicing method for optical fiber composite power cable |
| CN103208770A (en) * | 2013-04-28 | 2013-07-17 | 深圳市沃尔核材股份有限公司 | 110kV cable intermediate head accessory and connection method thereof |
| CN103268990A (en) * | 2013-04-22 | 2013-08-28 | 深圳市沃尔核材股份有限公司 | Cable built-in optical fiber intermediate connecting device and connecting method thereof |
| CN103500904A (en) * | 2013-09-24 | 2014-01-08 | 镇江科创电气工程有限公司 | Optical fiber communication type high voltage shore power connector |
| CN105830177A (en) * | 2014-06-16 | 2016-08-03 | 奇点新源国际技术开发(北京)有限公司 | Integrated umbilical delivery system for gas, data, communications acquisition / documentation, accessory power and safety |
| CN208738555U (en) * | 2018-09-12 | 2019-04-12 | 上海蓝昊电气江苏有限公司 | A kind of push-in mine flameproof high-voltage cable connector with optical fiber connection |
-
2018
- 2018-09-12 CN CN201811061183.2A patent/CN108879255B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772081A (en) * | 1986-09-15 | 1988-09-20 | Tsi Incorporated | Fiber optic connector assembly |
| CN201134525Y (en) * | 2007-12-21 | 2008-10-15 | 上海波汇通信科技有限公司 | High-voltage power cable terminal |
| CN102810837A (en) * | 2012-03-16 | 2012-12-05 | 远东电缆有限公司 | Intermediate splicing closure and splicing method for optical fiber composite power cable |
| CN103268990A (en) * | 2013-04-22 | 2013-08-28 | 深圳市沃尔核材股份有限公司 | Cable built-in optical fiber intermediate connecting device and connecting method thereof |
| CN103208770A (en) * | 2013-04-28 | 2013-07-17 | 深圳市沃尔核材股份有限公司 | 110kV cable intermediate head accessory and connection method thereof |
| CN103500904A (en) * | 2013-09-24 | 2014-01-08 | 镇江科创电气工程有限公司 | Optical fiber communication type high voltage shore power connector |
| CN105830177A (en) * | 2014-06-16 | 2016-08-03 | 奇点新源国际技术开发(北京)有限公司 | Integrated umbilical delivery system for gas, data, communications acquisition / documentation, accessory power and safety |
| CN208738555U (en) * | 2018-09-12 | 2019-04-12 | 上海蓝昊电气江苏有限公司 | A kind of push-in mine flameproof high-voltage cable connector with optical fiber connection |
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| Publication number | Publication date |
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| CN108879255A (en) | 2018-11-23 |
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