Mine rockfall protective video surveillance light transmission device

Abstract

The invention discloses a mine rockfall protective video surveillance light transmission device which comprises a case with an upper opening which is covered with a cover plate. A plurality of wire through holes are formed in the side wall of the case. An inverted-L-shaped sealing part is arranged on the outer side of each wire through hole, a through hole extending is formed in the sealing part and communicated with the corresponding wire through hole, and a downward joint of the sealing part is of stepped holes, namely a big hole and a small hole; the big hole is close to the downward joint of the sealing part, and a pressure plug is in threaded connection in the big hole; an O-shaped ring is arranged between the pressure plug and the small hole; and the pressure plug is provided with a via hole along an extending direction thereof. The mine rockfall protective video surveillance light transmission device has the advantages that due to the L-shaped sealing parts with the downward joints, dust accumulation at the downward joints is avoided, the O-shaped rings are protected against dust accumulation, and the process of cleaning the O-shaped rings to guarantee sealing performance is omitted during mounting of the O-shaped rings after maintenance to save time; meanwhile, the sealing parts covered with the cover plate are prevented from being smashed by rocks and accordingly are protected.

Description

technical field [0001] The invention relates to an optical fiber transmitter, in particular to a mine cave rockfall prevention video monitoring light transmitting device. Background technique [0002] The function of the optical transmitter is to convert the electrical signal sent from the electric terminal into an optical signal, and send it into the optical fiber line for transmission. [0003] In existing mines, the monitoring system generally transmits video signals through optical fibers, and the images are relatively clear and rarely lost. The data detected by the camera is sent to an optical transmitter, and the optical transmitter converts the electrical signal of the camera into an optical signal for transmission. , but the existing optical transmitters used in mines are all explosion-proof, because there is a lot of dust in mines, and if the optical transmitter is not sealed, it is easy to cause an explosion, and the seal set at the outlet on the side wall is horiz...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the current technology, to provide a video monitoring light emitting device for rockfall prevention in mines, and to solve the defect that the sealing parts of the existing light transmitters in mines are easily broken by stones

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