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CN-121763635-B - Straight barrel camera

CN121763635BCN 121763635 BCN121763635 BCN 121763635BCN-121763635-B

Abstract

The invention relates to the technical field of straight barrel cameras and discloses a straight barrel camera which comprises a rear cover, wherein a barrel body is connected to the surface of the rear cover in a threaded manner, a front cover is connected to one end of the barrel body, which is far away from the rear cover, a first lens and a second lens are arranged in the front cover, an image pickup main body is arranged in the rear cover, a lens mounting component is arranged in the front cover, the rear cover, the barrel body and the front cover are all made of radiation-resistant materials, the lens mounting component comprises a retainer, the end part of the retainer is in contact with the end part of the rear cover, and the retainer is in threaded connection with the end part of the rear cover through a screw rod. According to the invention, the triangular block pushes the inclined extrusion ring to move by using the inclined plane when moving, and the inclined extrusion ring pushes the rubber ring to extrude the inner wall of the sealing groove when moving, so that the sealing effect of the barrel body and the front cover is improved, the inclined extrusion ring can extrude the rubber ring to expand when moving, and the rubber ring can extrude the inner wall of the front cover and the barrel body when expanding, so that the sealing performance of the barrel body and the front cover after being installed is improved, and the sealing effect of the camera after being installed is improved.

Inventors

  • CHEN JINCAO
  • WU LINGHUA
  • WANG HAIFENG

Assignees

  • 中科核泰技术(杭州)有限公司

Dates

Publication Date
20260508
Application Date
20260302

Claims (7)

  1. 1. The utility model provides a straight barrel camera, includes back lid (1), the surface threaded connection of back lid (1) has stack shell (2), the one end threaded connection that back lid (1) was kept away from to stack shell (2) has protecgulum (3), the inside of protecgulum (3) is provided with lens one (5) and lens two (4), the inside of back lid (1) is provided with shooting main part (6), characterized in that, the inside of protecgulum (3) is provided with lens installation component (7); The lens mounting component (7) comprises a retainer (20), the end part of the retainer (20) is in contact with the end part of the rear cover (1), the retainer (20) is in threaded connection with the end part of the rear cover (1) through a first screw rod (25), one end of the retainer (20), far away from the rear cover (1), is fixedly connected with a mounting plate (21), the inner wall of the mounting plate (21) is in threaded connection with a second screw rod (23), one end of the mounting plate (21), far away from the retainer (20), is provided with a screw hole frame (26), the inner wall of the screw hole frame (26) is in threaded connection with a lens (28), the inner wall of the front cover (3) is in threaded connection with a threaded frame (22), the inner wall of the threaded frame (22) is in threaded connection with a third screw rod (30), the surface of the threaded frame (22) is provided with a lamp ring (27), the surface of the rear cover (1) and the surface of the barrel (2) are both provided with a sealing groove (24), the inner wall of the threaded frame (22) is fixedly connected with a protective frame (29), the inner wall of the mounting plate (21) is provided with a sealing groove (8), and the inner part (9) is provided with a protective part. The protection component (9) comprises a limiting ring (50), the surface of the limiting ring (50) is fixedly connected with the inner ring wall of the threaded frame (22), the inner wall of the limiting ring (50) is fixedly connected with a telescopic plate (52), one end of the telescopic plate (52) away from the limiting ring (50) is fixedly connected with a squeezing plate (55), one end of the squeezing plate (55) away from the telescopic plate (52) is fixedly connected with a contact pad (57), the surface of the telescopic plate (52) is fixedly connected with an elastic sheet (59), one end of the elastic sheet (59) away from the telescopic plate (52) is fixedly connected with the surface of the squeezing plate (55), one end of the squeezing plate (55) away from the contact pad (57) is fixedly connected with a sloping plate (56), a round hole (53) is formed in the inner wall of the threaded frame (22), the inner wall of the round hole (53) is fixedly connected with an elastic rod (51), the telescopic end of the elastic rod (51) is fixedly connected with a bending plate (60), one end of the bending plate (60) away from the elastic rod (51) is fixedly connected with the squeezing ring (54), and the surface of the bending plate (60) is fixedly connected with a mandrel (58). One end of the ejector rod (58) far away from the bent plate (60) is in contact with the surface of the screw hole frame (26), the inner wall of the extrusion ring (54) is in contact with the inclined surface of the inclined plate (56), and one end of the contact pad (57) far away from the extrusion plate (55) is in contact with the surface of the lens (28).
  2. 2. The straight barrel camera as set forth in claim 1, wherein the holder (20) is disposed symmetrically with respect to the camera body (6), one end of the holder (20) away from the rear cover (1) extends into the front cover (3), the mounting plate (21) is screwed with the screw hole frame (26) through the screw rod (23), the screw hole frame (26) is disposed in the front cover (3), the surface of the first lens (5) is fixedly connected with the inner wall of the front cover (3), and the inner wall of the first lens (5) is fixedly connected with the surface of the protective frame (29).
  3. 3. The straight barrel camera as set forth in claim 2, wherein the surface of the second lens (4) is fixedly connected with the inner wall of the protective frame (29), the lamp ring (27) is in threaded connection with the threaded frame (22) through a third screw rod (30), one end of the lens (28) away from the screw hole frame (26) is in contact with the inner wall of the protective frame (29), the lamp ring (27) is positioned at one end, close to the threaded frame (22) and the first lens (5), of the rear cover (1), the sealing groove (24) is formed in the surface of the rear cover (1) and is positioned in the barrel (2), and the sealing groove (24) is formed in the surface of the barrel (2) and is positioned in the front cover (3).
  4. 4. A straight barrel camera according to claim 3, wherein the sealing component (8) comprises a rubber ring (41), the inner ring wall of the rubber ring (41) is in contact with the inner wall of the sealing groove (24), a groove ring (45) is fixedly connected to the inner wall of the sealing groove (24), a triangular block (44) is slidably connected to the inner wall of the groove ring (45), an inclined extrusion ring (43) is arranged at one end, close to the rubber ring (41), of the groove ring (45), and a sealing gasket (42) is fixedly connected to one end, far away from the rubber ring (41), of the inclined extrusion ring (43).
  5. 5. A straight barrel camera as set forth in claim 4, wherein two groove rings (45) are provided, two groove rings (45) are respectively located in two sealing grooves (24), and a plurality of triangular blocks (44) are provided in the groove rings (45).
  6. 6. A straight barrel camera according to claim 5, wherein one end of the triangular block (44) far away from the groove ring (45) is in contact with the surface of the inclined extrusion ring (43), the inner ring wall of the sealing gasket (42) is in contact with the inner wall of the sealing groove (24), and the inclined surface of the inclined extrusion ring (43) is in contact with the inner ring wall of the rubber ring (41).
  7. 7. A straight barrel camera as set forth in claim 6, wherein a plurality of expansion plates (52) are provided, the expansion plates (52) are circumferentially arranged with a limiting ring (50) as a center, two elastic rods (51) are provided, and the two elastic rods (51) are symmetrically arranged with a screw frame (22) as a center.

Description

Straight barrel camera Technical Field The invention relates to the technical field of nuclear industry monitoring, in particular to a straight barrel camera for a nuclear power station. Background The straight barrel camera for monitoring the nuclear power station is a radiation-resistant camera designed for a high radiation environment, can stably work under the strong radiation condition of the nuclear power station, monitors the safety condition of key equipment or areas in real time, is generally of a straight barrel type design, has a compact structure, is convenient to flexibly install and operate in a narrow space, can resist radiation damage by using radiation-resistant materials such as stainless steel or special alloy, and simultaneously performs reinforcement treatment on a sensor and a circuit, so that long-term reliable operation under the radiation environment is ensured; The straight barrel camera is assembled in a threaded connection mode, the sealing between the barrel body and the front cover and the rear cover is sealed at the joint in a threaded contact mode, the threads between the barrel body and the front cover and the rear cover are worn out under long-term use, and water vapor is easy to invade the inside of the machine body after the wear occurs, so that the stability of the work of the internal parts of the machine body is affected. Disclosure of Invention The present invention is directed to a straight barrel camera for solving the above-mentioned problems. In order to solve the technical problems, the invention is realized by the following technical scheme: the invention relates to a straight barrel camera, which comprises a rear cover, wherein the surface of the rear cover is in threaded connection with a barrel body, one end of the barrel body far away from the rear cover is in threaded connection with a front cover, a first lens and a second lens are arranged in the front cover, a shooting main body is arranged in the rear cover, a lens mounting part is arranged in the front cover, and the rear cover, the barrel body and the front cover are all made of radiation-resistant materials; The lens mounting component comprises a retainer, the end of the retainer contacts with the end of the rear cover, the retainer is in threaded connection with the end of the rear cover through a screw, one end of the retainer, which is far away from the rear cover, is fixedly connected with a mounting plate, the inner wall of the mounting plate is in threaded connection with a screw II, one end of the mounting plate, which is far away from the retainer, is provided with a screw hole frame, the inner wall of the screw hole frame is in threaded connection with a lens, the inner wall of the front cover is in threaded connection with a screw rack, the inner wall of the screw rack is in threaded connection with a screw III, the surface of the screw rack is provided with a lamp ring, the surfaces of the rear cover and the surface of the barrel are both provided with sealing grooves, the inner wall of the screw rack is fixedly connected with a protection frame, the inside of the sealing grooves is provided with a sealing component, and the inside of the screw rack is provided with a protection component. Further, the holder uses the main part of making a video recording as central symmetry setting, the one end that the back lid was kept away from to the holder extends to the inside of protecgulum, mounting panel and screw frame pass through screw rod two threaded connection, the screw frame is located the inside of protecgulum, the surface of lens one and the inner wall fixed connection of protecgulum, the inner circle wall of lens one and the fixed surface connection of protection frame. Further, the surface of lens two and the inner wall fixed connection of protection frame, the lamp circle passes through three threaded connection of screw rod with the screw frame, the one end that screw frame was kept away from to the camera lens and the inner wall contact of protection frame, the lamp circle is located the one end that screw frame and lens one are close to each other, the seal groove that the back lid surface set up is located the inside of stack shell, the seal groove on stack shell surface is located the inside of protecgulum. Further, sealing component includes the rubber ring, the inner circle wall of rubber ring and the inner wall contact of seal groove, the inner wall fixedly connected with recess ring of seal groove, the inner wall sliding connection of recess ring has the triangle piece, the recess ring is provided with the inclined plane extrusion ring with the one end that the rubber ring is close to each other, the one end fixedly connected with sealed pad that the rubber ring was kept away from to the inclined plane extrusion ring. Further, the number of the groove rings is two, the two groove rings are respectively located in the two sealing grooves, and a plurality of triangular blocks