CN-122000729-A - Photoelectric composite cable connector for coal mine

CN122000729ACN 122000729 ACN122000729 ACN 122000729ACN-122000729-A

Abstract

The invention relates to a photoelectric composite cable connector for a coal mine. The connector comprises a connector body and an optical fiber connecting assembly in the connector body, wherein the optical fiber connecting assembly comprises a ceramic ferrule, a guide sleeve and a floating alignment mechanism, the ceramic ferrule is used for fixing optical fibers of an optoelectronic composite cable, the floating alignment mechanism is configured to allow the ceramic ferrule to float radially to realize automatic alignment of the optical fibers when connected, the electric connecting assembly in the connector body comprises a cable locking structure, a first compression block, a first sealing block, a second compression block and a sealing bin, the first compression block and the second compression block are matched to apply axial extrusion to the first sealing block, the optical fiber connecting assembly further comprises an independent sealing bin, an optical fiber part of the optoelectronic composite cable is independently arranged in the bin, and the second sealing block is filled in the bin and deformed under extrusion so as to be tightly attached to an optical fiber protection tube. According to the invention, the optical fiber butt joint precision is optimized through the floating alignment mechanism, and the environment protection capability is enhanced by adopting the sealing system, so that the transmission stability of the underground photoelectric composite cable of the coal mine is improved.

Inventors

GAO JIAN
LANG JIANPING
JIN XIN
CHEN YU
YIN YUJIE
XU YUAN
YUAN ZHAOYANG
ZHU JUN

Assignees

上海煤科检测技术有限公司

Dates

Publication Date: 20260508
Application Date: 20260303

Claims (10)

1. An optoelectronic composite cable connector for coal mines, comprising: a connector body; The optical fiber connecting assembly is arranged in the connector body and comprises a ceramic ferrule (2), a guide sleeve (3) and a floating alignment mechanism, wherein the ceramic ferrule (2) is used for fixing an optical fiber of the photoelectric composite cable, and the floating alignment mechanism is arranged on the ceramic ferrule (2) and allows the ceramic ferrule (2) to float along the diameter direction during connection so as to realize automatic alignment of the optical fiber; An electrical connection assembly disposed within the connector body, and The optical fiber protection tube comprises a connector body, a sealing assembly, an independent sealing bin and a second sealing block, wherein the connector body is internally sealed, the sealing assembly comprises a cable locking structure, a first compression block, a first sealing block, a second compression block and a sealing bin which are sequentially arranged, the first compression block and the second compression block are matched to apply axial extrusion to the first sealing block, the sealing assembly further comprises the independent sealing bin, an optical fiber part of an optical fiber composite cable is independently arranged in the independent sealing bin, the independent sealing bin is filled with the second sealing block, and the second sealing block is used for being deformed under the action of extrusion force so as to be tightly attached to the optical fiber protection tube.
2. The photoelectric composite cable connector for coal mines according to claim 1, wherein optical fibers in the photoelectric composite cable are adhered to the ceramic ferrule (2), at least two ceramic ferrules (2) are arranged to be inserted into the guide tube, and each ceramic ferrule (2) is provided with an independent floating alignment mechanism.
3. The photoelectric composite cable connector for coal mines according to claim 1, wherein the guide tube is an open ceramic sleeve, and the tolerance and roundness of the outer diameter of the ceramic ferrule (2) are controlled to be in a micron level.
4. The photoelectric composite cable connector for coal mines according to claim 1, wherein the independent floating alignment mechanism comprises a floating spring (1) and a locking nut (5), the floating spring (1) is used for providing axial elastic force for the ferrule (2) and allowing the ferrule (2) to float in the radial direction, and the locking nut (5) is used for adjusting pretightening force of the floating spring (1).
5. The photoelectric composite cable connector for coal mines according to claim 1, wherein the cable locking structure is arranged at the front end of the connector, is used for fixing an armored steel wire (94) of the photoelectric composite cable, and is connected with the connector body through mechanical engagement.
6. The photoelectric composite cable connector for coal mines according to claim 1, wherein the photoelectric composite cable sequentially passes through the cable locking structure, the first compression block, the first sealing block and the second compression block to enter the sealing bin; The first compression block and the second compression block are connected with the inner wall of the cylinder of the connector body through screw threads, and the first compression block and the second compression block are screwed to realize axial extrusion of the first sealing block positioned in the middle of the first compression block and the second compression block.
7. The photoelectric composite cable connector for coal mines according to claim 1, wherein an optical fiber fixing device is arranged in the independent sealing bin, the second sealing block is made of an elastic sealing material, fills a gap part in the independent sealing bin, and is tightly attached to the optical fiber protection tube to form a gapless seal.
8. The photoelectric composite cable connector for coal mines according to claim 1, wherein a sealing cover is arranged at the rear end of the connector body, watertight pins are arranged on the sealing cover, and the electric connection assembly penetrates through the sealing bin through the watertight pins to be connected with a tension rod unit.
9. The photoelectric composite cable connector for coal mines according to claim 1, wherein the connector body is made of copper; the nonmetallic sealing piece in the sealing assembly is made of at least one of chloroprene rubber or polyurethane materials.
10. The photoelectric composite cable connector for coal mines according to claim 1, wherein the seal assembly is designed with a radial seal and an axial seal, the radial seal and the axial seal satisfying: Wherein A represents radial seal compression amount, r represents the section diameter of the photoelectric composite cable, H represents radial seal groove depth, B represents axial seal compression amount, and H represents seal groove height; The radial seal compression is designed to be 8% to 12%, and the axial seal compression is designed to be 45% to 55%.

Description

Photoelectric composite cable connector for coal mine Technical Field The invention relates to the technical field of mining cable connection, in particular to a photoelectric composite cable connector for a coal mine. Background Along with development of underground mining technology and equipment of the coal mine, requirements on underground power supply safety and reliability are higher and higher, underground power supply lines of the coal mine are scattered, the distance of the power supply lines is longer, and in order to facilitate transmission and daily maintenance of underground electric energy of the coal mine, a cable intermediate connection mode is adopted, so that underground power consumption requirements of the coal mine are met. However, the underground environment of the coal mine is moist, and more dust in the air can cause corrosion of the cable connection part, so that short-circuit faults are caused, and normal production and safety of the underground coal mine are affected. Moreover, when the existing connector is connected with an optical cable, the end face of the optical fiber may shift, so that stable transmission of optical signals is damaged, and optical fiber loss is increased. Disclosure of Invention In view of the above, the present invention provides an optoelectronic composite cable connector for coal mines that solves or at least alleviates one or more of the above-identified problems and other problems of the prior art. In order to achieve the foregoing object, the present invention provides an optoelectronic composite cable connector for coal mines, comprising: a connector body; The optical fiber connecting assembly is arranged in the connector body and comprises a ceramic ferrule, a guide sleeve and a floating alignment mechanism, wherein the ceramic ferrule is used for fixing optical fibers of the photoelectric composite cable, and the floating alignment mechanism is arranged on the ceramic ferrule and allows the ceramic ferrule to float along the diameter direction during connection so as to realize automatic alignment of the optical fibers; An electrical connection assembly disposed within the connector body, and The optical fiber protection tube comprises a connector body, a sealing assembly, an independent sealing bin and a second sealing block, wherein the connector body is internally sealed, the sealing assembly comprises a cable locking structure, a first compression block, a first sealing block, a second compression block and a sealing bin which are sequentially arranged, the first compression block and the second compression block are matched to apply axial extrusion to the first sealing block, the sealing assembly further comprises the independent sealing bin, an optical fiber part of an optical fiber composite cable is independently arranged in the independent sealing bin, the independent sealing bin is filled with the second sealing block, and the second sealing block is used for being deformed under the action of extrusion force so as to be tightly attached to the optical fiber protection tube. In the photoelectric composite cable connector for coal mines as described above, optionally, an optical fiber inside the photoelectric composite cable is adhered inside the ferrule, at least two ferrules are inserted into the guide tube, and each ferrule is configured with an independent floating alignment mechanism. In the photoelectric composite cable connector for coal mines as described above, optionally, the guide tube is an open ceramic sleeve, and the tolerance of the outer diameter and the roundness of the ceramic ferrule are controlled to be in a micron level. In the photoelectric composite cable connector for coal mines, the independent floating alignment mechanism optionally comprises a floating spring and a locking nut, wherein the floating spring is used for providing axial elastic force for the ferrule and allowing the ferrule to float in the radial direction, and the locking nut is used for adjusting the pretightening force of the floating spring. In the photoelectric composite cable connector for coal mines as described above, optionally, the cable locking structure is disposed at a front end of the connector, and is used for fixing an armored steel wire of the photoelectric composite cable, and realizing connection of the photoelectric composite cable and the connector body through mechanical engagement. In the photoelectric composite cable connector for coal mines as described above, optionally, the photoelectric composite cable sequentially passes through the cable locking structure, the first compression block, the first sealing block and the second compression block to enter the sealing bin; The first compression block and the second compression block are connected with the inner wall of the cylinder of the connector body through screw threads, and the first compression block and the second compression block are screwed to realize axial extrusio