Search

CN-122015698-A - Optical fiber curvature sensor with conical cantilever structure

CN122015698ACN 122015698 ACN122015698 ACN 122015698ACN-122015698-A

Abstract

The utility model provides a fiber curvature sensor of toper cantilever beam structure, belongs to fiber curvature sensor field, including first barrel and second barrel, set up the fiber fixation pole between first barrel and the second barrel, first fiber groove and second fiber groove are seted up to fiber fixation pole periphery, and the one end of fiber fixation pole passes the first through-hole of first barrel and the first buffer gear who sets up in the first barrel and connects the other end of fiber fixation pole and pass the first through-hole of second barrel and be connected with the second buffer gear who sets up in the second barrel. According to the invention, the first buffer mechanism and the second buffer mechanism are respectively arranged at the two ends of the optical fiber fixing rod, the optical fiber storage cavity is arranged, and the optical fiber with a certain allowance length is stored in the optical fiber storage cavity in a coiling, folding and stacking mode, so that the probability of damage or breakage of the optical fiber curvature sensor caused by deformation of a conveying belt or influence of external force in the use process is effectively reduced, and the long-term stable use of the optical fiber curvature sensor is ensured.

Inventors

  • HAN HUIFENG
  • CHEN MINGCHAO
  • WANG ZHAN

Assignees

  • 山东道宽激光科技有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (7)

  1. 1. The optical fiber curvature sensor with the conical cantilever structure is characterized by comprising a first cylinder body (1) and a second cylinder body (2), wherein an optical fiber fixing rod (3) is arranged between the first cylinder body (1) and the second cylinder body (2), a first optical fiber groove (4) and a second optical fiber groove (5) are formed in the periphery of the optical fiber fixing rod (3), an included angle between the first optical fiber groove (4) and the second optical fiber groove (5) in the forming direction is 90 degrees, the first optical fiber groove (4) and the second optical fiber groove (5) can fix the middle part of an optical fiber (6), a first through hole (7) is formed in the corresponding position of the first cylinder body (1) and the second cylinder body (2) and the optical fiber fixing rod (3), one end of the optical fiber fixing rod (3) penetrates through the first through hole (7) of the first cylinder body (1) and is connected with a first buffer mechanism arranged in the first cylinder body (1), the first buffer mechanism can slide in the first cylinder body (1) and rotate, the other end of the optical fiber fixing rod (3) penetrates through the second through hole (7) of the second cylinder body (2) and is connected with the second buffer mechanism (2), one end of the first cylinder (1) and one end of the second cylinder (2) far away from the optical fiber fixing rod (3) are respectively provided with an optical fiber connector (9), and two ends of the optical fiber (6) are respectively electrically connected with the optical fiber connectors (9) at the corresponding sides.
  2. 2. The optical fiber curvature sensor with the conical cantilever structure according to claim 1, wherein the first buffer mechanism comprises a first ball column (10), one end of the first ball column (10) close to the optical fiber fixing rod (3) is fixedly connected with the end part of the optical fiber fixing rod (3), a plurality of first ball grooves (11) are uniformly formed in the periphery of the first ball column (10), first balls (12) are arranged in the first ball grooves (11), the opening width of the first ball grooves (11) is smaller than the diameter of the first balls (12), and the first balls (12) can be contacted with the inner wall of the first cylinder (1).
  3. 3. The optical fiber curvature sensor with the conical cantilever structure according to claim 2, wherein one end of the first ball column (10) far away from the optical fiber fixing rod (3) is provided with a bearing seat (13) capable of rotating relative to the first ball column (10), one end of the bearing seat (13) is fixedly connected with one end of a first spring (14), the other end of the first spring (14) is fixedly connected with one end of the first cylinder (1) far away from the optical fiber fixing rod (3), the first ball column (10) and the bearing seat (13) are arranged in a central hollow mode, and the optical fiber (6) can sequentially penetrate through the first ball column (10), the bearing seat (13) and the inside of the first spring (14).
  4. 4. The optical fiber curvature sensor with the conical cantilever structure according to claim 1, wherein the second buffer mechanism comprises a second ball column (15), one end, close to the optical fiber fixing rod (3), of the second ball column (15) is fixedly connected with the end part of the optical fiber fixing rod (3), a plurality of second ball grooves (16) are uniformly formed in the periphery of the first ball column (10), second balls (17) are arranged in the second ball grooves (16), sliding grooves (18) are formed in positions, corresponding to the second balls (17), on the inner wall of the second cylinder (2), of the second ball column, one side, close to the sliding grooves (18), of the second balls (17) is located in the sliding grooves (18), and the second balls (17) can slide along the directions of the sliding grooves (18).
  5. 5. The optical fiber curvature sensor with the conical cantilever structure according to claim 4, wherein one end of the second ball column (15) far away from the optical fiber fixing rod (3) is fixedly connected with one end of the second spring (19), the other end of the second spring (19) is fixedly connected with one end of the second cylinder (2) far away from the optical fiber fixing rod (3), the center of the second ball column (15) is hollow, and the optical fiber (6) can sequentially pass through the second ball column (15) and the inside of the second spring (19).
  6. 6. The optical fiber curvature sensor with the conical cantilever structure according to claim 1, wherein the optical fiber fixing rod (3) is made of spring steel.
  7. 7. The optical fiber curvature sensor with the conical cantilever structure according to claim 1, wherein the first cylinder (1) and the second cylinder (2) are provided with an optical fiber storage cavity (20) at one end far away from the optical fiber fixing rod (3), an optical fiber connector (9) is arranged at one end far away from the first cylinder (1) or the second cylinder (2) of the optical fiber storage cavity (20), a second through hole (8) is formed in one side, close to the first cylinder (1) or the second cylinder (2), of the optical fiber storage cavity (20), the optical fiber (6) penetrates through the second through hole (8) and is electrically connected with the optical fiber connector (9), the optical fiber (6) is arranged in the optical fiber storage cavity (20), and the length of the part, located in the optical fiber storage cavity (20), of the optical fiber (6) is 2-3 times the length of the optical fiber storage cavity (20).

Description

Optical fiber curvature sensor with conical cantilever structure Technical Field The invention belongs to the field of optical fiber curvature sensors, and particularly relates to an optical fiber curvature sensor with a conical cantilever structure. Background The optical fiber curvature sensor is widely used in the field of mineral product collection, in the mineral product collection process, the integral transportation state of underground transportation equipment is important for transportation safety and transportation efficiency, if the transportation belt of the integral transportation equipment is not in a straight line state but is displaced or bent, the transported mineral products can be scattered, even faults such as deflection and clamping stagnation of the transportation belt are caused, the safety and continuity of mineral product transportation are seriously affected, and therefore the use state of the transportation belt of the underground transportation equipment needs to be monitored in real time by adopting the optical fiber curvature sensor, and the transportation belt is timely adjusted when the transportation belt is displaced or bent, so that the stable operation of transportation is ensured. However, the optical fiber fixing end of the existing optical fiber curvature sensor is generally fixed by forming two optical fiber grooves on a rubber rod, and then the optical fiber fixing end is fixed on a conveyer belt of underground conveyer equipment according to a certain setting distance, and the position state of the conveyer belt is judged by acquiring the optical wavelength change in real time, but the optical fiber fixing end is damaged or even broken frequently in the use process due to poor elasticity of the optical fiber when the optical fiber fixing end is deformed by the conveyer belt and is caused to bend or other external force states, and normal use is affected. Disclosure of Invention The invention provides an optical fiber curvature sensor with a conical cantilever structure, which is used for solving the defects in the prior art. The invention is realized by the following technical scheme: The utility model provides a fiber curvature sensor of toper cantilever beam structure, includes first barrel and second barrel, first barrel and second barrel between set up the fiber fixation pole, fiber fixation pole periphery set up first fiber groove and second fiber groove, first fiber groove and second fiber groove set up the contained angle of orientation and be 90, first fiber groove and second fiber groove can fix the optic fibre middle part, first barrel and second barrel and the corresponding position of fiber fixation pole set up first through-hole, the one end of fiber fixation pole pass the first through-hole of first barrel and be connected with the first buffer gear that sets up in the first barrel, first buffer gear can slide and rotate in first barrel, the other end of fiber fixation pole pass the first through-hole of second barrel and be connected with the second buffer gear that sets up in the second barrel, second buffer gear can slide in the second barrel, first barrel and second barrel keep away from the one end of fiber fixation pole and set up a through-hole respectively, the optic fibre of the opposite ends of optic fibre fixation pole and the optic fibre of corresponding side respectively connect. The optical fiber curvature sensor with the conical cantilever structure comprises the first ball column, one end, close to the optical fiber fixing rod, of the first ball column is fixedly connected with the end part of the optical fiber fixing rod, a plurality of first ball grooves are uniformly formed in the periphery of the first ball column, first balls are arranged in the first ball grooves, the opening width of the first ball grooves is smaller than the diameter of the first balls, and the first balls can be contacted with the inner wall of the first cylinder. The optical fiber curvature sensor with the conical cantilever structure is characterized in that one end of the first ball column, far away from the optical fiber fixing rod, is provided with the bearing seat capable of rotating relative to the first ball column, one end of the bearing seat is fixedly connected with one end of the first spring, the other end of the first spring is fixedly connected with one end, far away from the optical fiber fixing rod, of the first barrel, the first ball column and the bearing seat are arranged in a hollow mode, and the optical fiber can sequentially penetrate through the first ball column, the bearing seat and the inside of the first spring. The optical fiber curvature sensor with the conical cantilever structure comprises the second ball column, one end, close to the optical fiber fixing rod, of the second ball column is fixedly connected with the end part of the optical fiber fixing rod, a plurality of second ball grooves are uniformly formed in the periphery o