A fiber optic macrobend detection device

Abstract

The application relates to the technical field of optical fibers, in particular to an optical fiber macro-bending detection device which comprises a rack, a mounting plate arranged at the upper end of the rack, a limiting piece mounted at the upper end of the mounting plate, a first mounting piece arranged at the upper end of the mounting plate, a light source generator mounted at the upper end of the first mounting piece, a second mounting piece arranged at the upper end of the mounting plate, a detection instrument mounted at the upper end of the second mounting piece, an arc-shaped through groove formed by concave downward at the upper end face of the mounting plate, the second mounting piece penetrating through the arc-shaped through groove, a driving piece arranged at the front end of the second mounting piece and extending into the arc-shaped groove, a functional piece arranged at the bottom end inside the rack and extending to the lower end of the rack, the design can realize the rapid bending of the optical fiber to be detected, effectively reduces the detection time and the labor intensity, can mechanically adjust the bending degree, and effectively guarantees the macro-bending detection accuracy and effect of the optical fiber.

Description

Technical Field

[0001] The invention relates to an optical fiber macrobend detection device, belonging to the technical field of optical fibers. Background Art

[0002] Optical fiber, short for optical fiber, is a thin medium made of glass or plastic. Its primary function is to transmit light through the principle of total internal reflection. However, when an optical fiber is bent after installation, if the propagation angle of the light beam at the boundary of these bends exceeds a critical value, the conditions required for total internal reflection cannot be met, causing some light to escape from the fiber core, resulting in a loss of transmission power. To ensure that the optical fiber is functioning properly and maintaining its performance, it is usually necessary to perform macrobend testing on it.

[0003] Currently, optical fiber macrobend detection devices generally consist of an infrared emitter, a high-precision detector PK2200, and a special ring wheel. The specific operating steps are as follows: first, wind the optical fiber to be tested on the ring wheel to simulate the bending conditions in actual use; then, connect the two ends of the optical fiber to the infrared emitter and the detection instrument PK2200 respectively; finally, start the system for detection. Although this process seems simple and straightforward, there are many challenges in the actual operation process - since the entire bending process relies entirely on manual labor, it is not only time-consuming and labor-intensive, but it is also more likely to cause problems such as loosening of the optical fiber due to human factors, thereby affecting the accuracy and reliability of the final test results. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides an optical fiber macrobend detection device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an optical fiber macrobend detection device, comprising a frame, a mounting plate provided at the upper end of the frame, a limiter mounted on the upper end of the mounting plate, a first mounting member provided at the upper end of the mounting plate, a light source generator mounted on the upper end of the first mounting member, and the light source generator is located to the right of the limiter, a second mounting member provided at the upper end of the mounting plate, a detection instrument mounted on the upper end of the second mounting member, and the detection instrument is located to the left of the limiter;

[0006] The upper end surface of the mounting plate is recessed downward to form an arcuate through groove, and the arcuate through groove passes through the mounting plate. The arcuate through groove is located outside the limit member. The second mounting member passes through the arcuate through groove. A driving member is provided at the front end of the second mounting member, and the driving member extends into the arcuate groove. A functional member is provided at the bottom end of the interior of the frame, and the functional member extends to the lower end of the frame.

[0007] Furthermore, the functional part includes a functional box, which is installed on the bottom end of the frame and extends to the lower end of the frame. A movable plate is slidably connected to the functional box, and movable components are provided at the four corners of the lower end of the movable plate.

[0008] A lifting device is installed on the upper end of the movable plate, and the fixed part of the lifting device is arranged on the top end of the function box. First telescopic rods are installed at the four corner positions of the upper end of the movable plate, and the other ends of the four first telescopic rods are connected to the top end of the function box. A power supply is provided on the upper end of the function box, and the power supply is electrically connected to the lifting device, the light source generator and the detection instrument respectively.

[0009] Furthermore, the first mounting member includes a second box body, the second box body is attached to the upper end of the mounting plate, a first cylinder is provided at the lower end of the second box body, and the first cylinder is located in the arc-shaped through groove, a first stud is provided in the middle of the lower end of the first cylinder, the outer end of the first stud is sleeved with a first pressing plate, and the first pressing plate is attached to the lower end of the mounting plate, the outer end of the first stud is threadedly connected to a first nut, and the first nut is located on the lower end of the first pressing plate;

[0010] The second screw is rotatably connected to the second box body, and the second screw is arranged along the length direction of the second box body. The outer end of the second screw is threadedly connected to the first nut seat, the upper end of the first nut seat is connected to the lower end of the light source generator, and the light source generator is attached to the upper end of the second box body.

[0011] Furthermore, the second mounting member includes a first box body, the interior of the first box body is rotatably connected to a third screw, and the first box body is located on the upper side of the mounting plate, the outer end of the third screw is threadedly connected to a second nut seat, the upper end of the second nut seat is connected to the lower end of the detection instrument, and the detection instrument is attached to the upper end of the first box body, a second cylinder is provided at the lower end of the first box body, and the second cylinder passes through the arc-shaped through groove, a second stud is installed in the middle of the lower end of the second cylinder, the outer end of the second stud is fitted with a second pressing plate, and the second pressing plate is located on the lower side of the mounting plate, the outer end of the second stud is threadedly connected to a second nut, and the second nut is located on the lower end of the second pressing plate;

[0012] The upper end surface of the mounting plate is recessed downward to form two first grooves, and the two first grooves are located on the front and rear sides of the arc-shaped through groove. Two first rolling members are symmetrically arranged at the lower end of the first box body, and the rolling parts of the two first rolling members are respectively rollingly connected to the two first grooves. The lower end surface of the mounting plate is recessed upward to form two second grooves, and the two second grooves are located on the front and rear sides of the arc-shaped through groove. Two second rolling members are symmetrically installed on the upper end of the second pressure plate, and the rolling parts of the two second rolling members are respectively rollingly connected to the two second grooves.

[0013] Furthermore, the driving member includes a fixed plate, which is installed on the front end of the first box body. The lower end of the fixed plate is rotatably connected to the rotating gear, and the rotating gear extends into the arc-shaped through groove. The upper end of the fixed plate is installed with a driving device, and the output shaft of the driving device is connected to the rotating gear. An arc-shaped rack is provided on the front wall inside the arc-shaped through groove, and the arc-shaped rack and the rotating gear are engaged with each other.

[0014] Furthermore, the limiting member includes a mounting cylinder, the mounting cylinder is mounted on the upper end of the mounting plate, and the mounting cylinder has a T-shaped cross section, a fixed cylinder is provided in the middle of the bottom end of the mounting cylinder, and the fixed cylinder extends out of the upper side of the mounting cylinder, a top plate is installed on the upper end of the fixed cylinder, the lower end of the top plate is rotatably connected to the rotating shaft, and the rotating shaft is located in the fixed cylinder, a large bevel gear is provided at the outer end of the rotating shaft, the outer end of the large bevel gear is equidistantly meshed with a plurality of small bevel gears, and the small bevel gears are located in the fixed cylinder, and a first screw is provided toward the middle of the outer end of the plurality of small bevel gears, the first screw passes through the fixed cylinder and the mounting cylinder, and the first screw is rotatably connected to the fixed cylinder and the mounting cylinder;

[0015] The outer ends of the multiple first screws are all threadedly connected to the trapezoidal blocks, and the trapezoidal blocks are located outside the fixed cylinder. The trapezoidal blocks are arranged to be wide inside and narrow outside. Multiple support plates are equidistantly arranged between the inner wall of the mounting cylinder and the outer end of the fixed cylinder, and the support plates and the trapezoidal blocks are arranged alternately. Multiple functional cylinders are equidistantly installed in the mounting cylinder, and the functional cylinders are located outside the fixed cylinder. The functional cylinders are on the upper side of the support plates. Multiple elastic members are equidistantly arranged at the lower ends of the multiple functional cylinders, and the other ends of the multiple elastic members are respectively connected to the upper ends of multiple support plates.

[0016] Furthermore, a plurality of second telescopic rods are equidistantly installed at the lower end of the functional cylinder, and the second telescopic rods are located on the inner side of the elastic member, and the other ends of the plurality of second telescopic rods are respectively connected to the upper ends of a plurality of support plates, and a plurality of guide rods are equidistantly installed on the inner wall of the mounting cylinder, and the guide rods are located on the lower side of the first screw rod, and the other ends of the plurality of guide rods are all connected to the outer end of the fixed cylinder, and the plurality of guide rods respectively pass through a plurality of trapezoidal blocks, and the trapezoidal blocks are slidably connected to the guide rods.

[0017] Beneficial effects of the present invention:

[0018] 1. Through the servo motor, rotating gear and arc-shaped rack, the fixed plate, driving device and first box body and other components move along the arc-shaped groove, thereby moving the detection instrument to the appropriate position and bending the optical fiber to be detected under the restriction of the outer end of the fixed tube, so as to achieve rapid bending of the optical fiber to be detected, effectively reducing the detection time and labor intensity, and the curvature can be mechanically adjusted to effectively ensure the accuracy and effect of optical fiber macrobend detection.

[0019] 2. The detection instrument and the light source generator are moved outward by the second screw, the third screw, the first nut seat and the second nut seat, so that the optical fiber to be detected is in a straight state after being tightened and installed, thereby achieving straightening of the optical fiber to be detected, effectively reducing the probability of excessive bending due to factors such as the falling of the optical fiber, effectively ensuring the accuracy and effect of optical fiber macrobend detection, and effectively facilitating the installation of the optical fiber to be detected.

[0020] 3. The electric push rod, movable plate and four universal wheels are used to realize convenient movement of the frame and other components, making it easy to use.

[0021] 4. Utilize the rotating shaft, large bevel gear, multiple small bevel gears, multiple small bevel gears, multiple first screws and multiple trapezoidal blocks to move the functional cylinder upward and fit it with the lower end of the top plate, and utilize the restriction of the upward-moving functional cylinder to bend the optical fiber to be detected, so as to adjust the bending diameter of the optical fiber to be detected, and effectively ensure the accuracy and effect of optical fiber macro-bend detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 This is a schematic structural diagram of an optical fiber macrobend detection device according to the present invention;

[0024] Figure 2 is a cross-sectional view of an optical fiber macrobend detection device according to the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0026] Figure 4 for Figure 2 Enlarged view of middle part B;

[0027] Figure 5 This is a cross-sectional view of a mounting plate in an optical fiber macrobend detection device according to the present invention;

[0028] Figure 6 This is a three-dimensional diagram of a first box body in an optical fiber macrobend detection device of the present invention;

[0029] Figure 7 This is a cross-sectional view of a mounting tube in an optical fiber macrobend detection device according to the present invention;

[0030] Figure 8 This is a three-dimensional diagram of a movable plate in an optical fiber macrobend detection device of the present invention.

[0031] In the figure: 1. Mounting plate, 2. Mounting cylinder, 3. Detection instrument, 4. Rack, 5. Function box, 6. Power supply, 7. Light source generator, 11. First groove, 12. Arc rack, 13. Arc through groove, 21. Top plate, 22. Rotating shaft, 23. Fixed cylinder, 24. Function cylinder, 25. Elastic member, 26. Support plate, 27. First screw, 28. Trapezoidal block, 31. First box body, 32. Servo motor, 33. Fixed Plate, 34, rotating gear, 51, electric push rod, 52, movable plate, 53, first telescopic rod, 54, universal wheel, 71, second box body, 72, first nut seat, 73, second screw, 74, first pressure plate, 75, first cylinder, 221, large bevel gear, 271, small bevel gear, 281, guide rod, 311, second nut seat, 312, third screw, 313, second cylinder, 314, second pressure plate. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Example 1: Figures 1-7 As shown, a fiber macrobend detection device is provided, including a frame 4, a mounting plate 1 is set on the upper end of the frame 4, and a mounting carrier is provided for components such as a mounting tube 2 through the mounting plate 1. An arcuate through-groove 13 is formed downwardly on the upper end surface of the mounting plate 1, penetrating the mounting plate 1 and located outside the mounting tube 2. The arcuate through-groove 13 provides a mounting carrier for components such as a first cylinder 75. The second box body 71 is attached to the upper end of the mounting plate 1, and a mounting carrier is provided for components such as the first cylinder 75 through the second box body 71. The first cylinder 75 located in the arcuate through-groove 13 is set on the lower end of the second box body 71, and a mounting carrier is provided for the first stud through the first cylinder 75.

[0034] The first stud is set on the middle part of the lower end of the first cylinder 75, and the first stud provides a mounting carrier for the first nut. The first pressing plate 74 attached to the lower end of the mounting plate 1 is mounted on the outer end of the first stud. The first pressing plate 74 restricts the installation of the first cylinder 75. The first nut located at the lower end of the first pressing plate 74 is then threaded onto the outer end of the first stud. The first pressing plate 74 restricts the installation.

[0035] The second screw rod 73 arranged along the length direction of the second box body 71 is rotated and connected to the second box body 71. The first nut is moved left and right along the second box body 71 through the second screw rod 73. The upper end of the first nut seat 72 threadedly connected to the outer end of the second screw rod 73 is connected to the lower end of the light source generator 7 attached to the upper end of the second box body 71 and located on the right side of the mounting tube 2. The first nut seat 72 provides a mounting support for the light source generator 7.

[0036] The upper end surface of the mounting plate 1 is recessed downward to form two first grooves 11 located on the front and rear sides of the arc-shaped through groove 13. The first grooves 11 are used to guide the movement of the first rolling member. The lower end surface of the mounting plate 1 is recessed upward to form two second grooves located on the front and rear sides of the arc-shaped through groove 13. The second grooves are used to guide the movement of the second rolling member. The fixing cylinder 23 extending from the upper side of the mounting cylinder 2 is set on the middle part of the bottom end inside the mounting cylinder 2. The optical fiber to be detected is restricted by the fixing cylinder 23, and the mounting cylinder 2 with a T-shaped cross section is mounted on the upper end of the mounting plate 1. The top plate 21 is then mounted on the upper end of the fixing cylinder 23. The top plate 21 and the fixing cylinder 23 are used in conjunction to limit the optical fiber to be detected.

[0037] The third screw 312 is rotatably connected to the inside of the first box body 31 located on the upper side of the mounting plate 1. The second nut seat 311 is moved left and right through the third screw 312. The upper end of the second nut seat 311 threadedly connected to the outer end of the third screw 312 is connected to the lower end of the detection instrument 3 that is attached to the upper end of the first box body 31 and located on the left side of the mounting cylinder 2. The second nut seat 311 provides a mounting carrier for the detection instrument 3. The fixed parts of the two first rolling members whose rolling parts are respectively connected to the two first grooves 11 are symmetrically arranged on the lower end of the first box body 31. The two first rolling members are used in conjunction to assist the movement of the first box body 31. The first rolling member can adopt a bull's eye universal ball.

[0038] The second cylinder 313 passing through the arc groove 13 is set on the lower end of the first box body 31, and the second cylinder 313 is used to provide a mounting carrier for the second stud, and the second stud is installed on the middle part of the lower end of the second cylinder 313. The second stud is used to provide a mounting carrier for components such as the second nut. Then, the second pressing plate 314 located on the lower side of the mounting plate 1 is sleeved on the outer end of the second stud, and a mounting carrier is provided for the second rolling member through the second pressing plate 314. The second nut located at the lower end of the second pressing plate 314 is threadedly connected to the outer end of the second stud, and the second pressing plate 314 is restricted in installation by the second nut. Then, two second rolling members whose rolling parts are respectively rollingly connected with the two second grooves are symmetrically mounted on the upper end of the second pressing plate 314. The two second rolling members are used in combination to assist the movement of the second pressing plate 314. The second rolling member can adopt a bull's eye universal ball.

[0039] The fixed plate 33 is installed on the front end of the first box body 31, the fixed plate 33 provides a mounting carrier for the driving device and other components, the fixed part of the driving device connected with the output shaft and the rotating gear 34 is installed on the upper end of the fixed plate 33, the driving device can be a servo motor 32, the rotating gear 34 extending into the arc-shaped through slot 13 is rotatably connected to the lower end of the fixed plate 33, and the arc-shaped rack 12 meshing with the rotating gear 34 is arranged on the inner front wall of the arc-shaped through slot 13. The arc-shaped rack 12 cooperates with the rotating gear 34 to move the fixed plate 33 and other components.

[0040] In use, one end of the optical fiber to be detected is first tightly mounted with the port of the light source generator 7, and the other end of the optical fiber to be detected is then tightly mounted with the port of the detection instrument 3. Then the servo motor 32 is started to drive the rotating gear 34 to rotate. Since the rotating gear 34 meshes with the arc-shaped rack 12, the rotating gear 34 rotates while moving along the arc-shaped rack. Thus, the fixed plate 33, the driving device, and the first box body 31 and other components move along the arc-shaped through slot 13, so that the detection instrument 3 moves to the appropriate position and the optical fiber to be detected is bent under the limitation of the outer end of the fixed cylinder 23. The optical fiber to be detected is quickly bent, the detection time and labor intensity are effectively reduced, the bending degree can be mechanically adjusted, and the accuracy and effect of the macro-bending detection of the optical fiber are effectively ensured.

[0041] Then the second screw rod 73 and the third screw rod 312 rotate. Since the second screw rod 73 is threadedly connected with the first nut seat 72 and the third screw rod 312 is threadedly connected with the second nut seat 311, the first nut seat 72 and the second nut seat 311 move outward when the second screw rod 73 and the third screw rod 312 rotate. Thus, the detection instrument 3 and the light source generator 7 move outward, and the optical fiber to be detected in the tightened state is located between the mounting cylinder 2 and the top plate 21. The optical fiber to be detected is straightened, the probability of excessive bending due to the downward falling of the optical fiber is effectively reduced, the accuracy and effect of the macro-bending detection of the optical fiber are effectively ensured, and the installation of the optical fiber to be detected is effectively facilitated.

[0042] Then the detection instrument 3 and the light source generator 7 are started. The light source generator 7 works to deliver light sources to the optical fiber to be detected. The light sources are delivered along the bent optical fiber to the detection instrument 3. The detection instrument 3 works to detect the input light sources and compares and calculates the light sources emitted by the light source generator 7 and received by the detection instrument 3. The bending loss of the optical fiber is detected.

[0043] Embodiment two: as Figure 1 , Figure 2 and Figure 8As shown, the function box 5 extending to the lower end of the frame 4 is installed on the bottom end of the frame 4. The function box 5 provides installation space for components such as the movable plate 52, and the movable plate 52 is slidably connected to the function box 5. The movable plate 52 provides an installation carrier for components such as the mobile member. The fixed parts of the four mobile members are respectively set at the four corner positions of the lower end of the movable plate 52. The four mobile members are used in conjunction with each other for movement. The mobile members can use universal wheels 54.

[0044] The fixed part of the lifting device connecting the movable part and the upper end of the movable plate 52 is set on the top inside the function box 5. The movable plate 52 is driven to move up and down through the lifting device. The lifting device can adopt an electric push rod 51, and the four first telescopic rods 53 connected to the top inside the function box 5 at the other ends are respectively installed at the four corner positions of the upper end of the movable plate 52. The four first telescopic rods 53 are used together to guide the movement of the movable plate 52, and then the power supply 6 electrically connected to the lifting device, the light source generator 7 and the detection instrument 3 respectively is set on the upper end of the function box 5. The power supply 6 is used to provide power to the lifting device, the light source generator 7, the detection instrument 3 and other equipment.

[0045] When in use, first start the electric push rod 51, and then drive the movable plate 52 to move downward along the function box 5, so that the four universal wheels 54 move downward, and then the four universal wheels 54 contact the ground and lift the function box 5 and the frame 4 and other components, then use the four universal wheels 54 to move the function box 5 and the frame 4 and other components to the required position, and then use the electric push rod 51 to move the movable plate 52 upward and return to its original position, at this time the lower end of the frame 4 contacts the ground, realizing convenient movement of the frame 4 and other components, which is easy to use.

[0046] Example 3: Figure 1 、 Figure 2 and Figure 7 As shown, the rotating shaft 22 located in the fixed cylinder 23 is rotatably connected to the lower end of the top plate 21, and the large bevel gear 221 is rotated through the rotating shaft 22. The large bevel gear 221 is set on the outer end of the rotating shaft 22. The large bevel gear 221 causes multiple small bevel gears 271 to rotate synchronously. Then, multiple small bevel gears 271 located in the fixed cylinder 23 are equidistantly meshed with the outer end of the large bevel gear 221. The small bevel gears 271 cause the first screw 27 to rotate.

[0047] A plurality of first screws 27 penetrating the fixed cylinder 23 and the mounting cylinder 2 and rotatably connected thereto are disposed on the middle portions of the outer ends of the plurality of small bevel gears 271. The first screws 27 cause the trapezoidal blocks 28 to move. Furthermore, a plurality of trapezoidal blocks 28 located outside the fixed cylinder 23 and arranged to be wide inside and narrow outside are threadedly connected to the outer ends of the plurality of first screws 27. The trapezoidal blocks 28 cause the functional cylinder 24 to move upward.

[0048] A plurality of support plates 26 alternately arranged with the trapezoidal blocks 28 are equidistantly arranged between the inner wall of the mounting tube 2 and the outer end of the fixed tube 23. The support plates 26 provide a mounting carrier for the elastic member 25. A plurality of functional tubes 24 located outside the fixed tube 23 and on the upper side of the support plates 26 are equidistantly installed in the mounting tube 2. The plurality of functional tubes 24 are used in conjunction with each other to adjust the bending diameter of the optical fiber. A plurality of elastic members 25, each connected at the other end to the upper end of the plurality of support plates 26, are equidistantly arranged on the lower end of the functional tube 24. The functional tube 24 is returned to its original position by the elastic member 25. The elastic member 25 can be a spring.

[0049] A plurality of second telescopic rods located on the inner side of the elastic member 25 and connected at the other ends to the upper ends of the plurality of support plates 26 are equidistantly installed on the lower end of the functional cylinder 24. The plurality of second telescopic rods are used in combination to guide the movement of the functional cylinder 24. A plurality of guide rods 281 located on the lower side of the first screw rod 27 and connected at the other ends to the outer end of the fixed cylinder 23 and passing through the trapezoidal block 28 and slidingly connected to the trapezoidal block 28 are equidistantly installed on the inner wall of the mounting cylinder 2. The movement of the trapezoidal block 28 is guided by the guide rods 281.

[0050] When in use, the rotating shaft 22 is first rotated, thereby rotating the large bevel gear 221. Since the large bevel gear 221 is meshed with the plurality of small bevel gears 271, the rotation of the large bevel gear 221 causes the plurality of small bevel gears 271 to rotate synchronously, thereby causing the plurality of first screws 27 to rotate synchronously. Since the first screw 27 is threadedly connected to the trapezoidal block 28, the rotation of the first screw 27 simultaneously causes the trapezoidal block 28 to move outward, thereby causing the outward inclined surface of the trapezoidal block 28 to contact the inner wall of a functional cylinder 24, thereby causing the functional cylinder 24 to move upward and stretching the plurality of elastic members 25, causing the elastic members 25 to generate elastic force and causing the upper end of the functional cylinder 24 to fit the lower end of the top plate 21.

[0051] Then, the servo motor 32, the rotating gear 34 and the arc-shaped rack 12 are used to move the fixed plate 33, the driving device and the first box body 31 and other components along the arc-shaped groove 13, so that the detection instrument 3 is moved to the appropriate position, and the optical fiber to be detected is bent under the outer end restriction of the upward functional cylinder 24, and the optical fiber to be detected is straightened by the second screw 73 and the third screw 312, and then the detection operation is carried out. With the same steps as above, the functional cylinders 24 of different diameters are successively fitted with the lower end of the top plate 21, so that the optical fiber is subjected to multiple detection operations to adjust the bending diameter of the optical fiber to be detected, effectively ensuring the accuracy and effect of optical fiber macrobend detection.

[0052] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An optical fiber macrobend detection device, characterized by: The invention comprises a frame (4), a mounting plate (1) is provided on the upper end of the frame (4), a limiting member is installed on the upper end of the mounting plate (1), a first mounting member is provided on the upper end of the mounting plate (1), a light source generator (7) is installed on the upper end of the first mounting member, and the light source generator (7) is located on the right side of the limiting member, a second mounting member is provided on the upper end of the mounting plate (1), a detection instrument (3) is installed on the upper end of the second mounting member, and the detection instrument (3) is located on the left side of the limiting member; The upper end surface of the mounting plate (1) is recessed downward to form an arcuate through groove (13), and the arcuate through groove (13) passes through the mounting plate (1), and the arcuate through groove (13) is located outside the limiting member, and the second mounting member passes through the arcuate through groove (13), and a driving member is provided at the front end of the second mounting member, and the driving member extends into the arcuate groove, and a functional member is provided at the bottom end of the interior of the frame (4), and the functional member extends to the lower end of the frame (4); The limiting member comprises a mounting cylinder (2), the mounting cylinder (2) being mounted on the upper end of the mounting plate (1), and the mounting cylinder (2) having a T-shaped cross section, a fixing cylinder (23) being provided in the middle of the bottom end of the mounting cylinder (2), and the fixing cylinder (23) extending out of the upper side of the mounting cylinder (2), a top plate (21) being mounted on the upper end of the fixing cylinder (23), a rotating shaft (22) being rotatably connected to the lower end of the top plate (21), and the rotating shaft (22) being located in the fixing cylinder (23), and the rotating shaft (2 2) A large bevel gear (221) is provided at the outer end, and the outer end of the large bevel gear (221) is equidistantly meshed with multiple small bevel gears (271), and the small bevel gears (271) are located in the fixed cylinder (23), and the multiple small bevel gears (271) are all provided with a first screw (27) toward the middle of the outer end, and the first screw (27) passes through the fixed cylinder (23) and the mounting cylinder (2), and the first screw (27) is rotatably connected to the fixed cylinder (23) and the mounting cylinder (2); The outer ends of the plurality of first screw rods (27) are all threadedly connected to the trapezoidal blocks (28), and the trapezoidal blocks (28) are located outside the fixed cylinder (23). The trapezoidal blocks (28) are arranged to be wide inside and narrow outside. A plurality of support plates (26) are equidistantly arranged between the inner wall of the installation cylinder (2) and the outer end of the fixed cylinder (23), and the support plates (26) and the trapezoidal blocks (28) are alternately arranged. A plurality of functional cylinders (24) are equidistantly installed in the installation cylinder (2), and the functional cylinders (24) are located outside the fixed cylinder (23). The functional cylinders (24) are located on the upper side of the support plates (26). A plurality of elastic members (25) are equidistantly arranged at the lower ends of the plurality of functional cylinders (24), and the other ends of the plurality of elastic members (25) are respectively connected to the upper ends of the plurality of support plates (26). Functional cylinders (24) of different diameters are sequentially fitted to the lower end of the top plate (21), thereby performing multiple detection operations on the optical fiber and adjusting the bending diameter of the optical fiber to be detected.

2. The optical fiber macrobend detection device according to claim 1, wherein: The functional part includes a functional box (5), the functional box (5) is installed on the bottom end of the frame (4), and the functional box (5) extends to the lower end of the frame (4), the functional box (5) is slidably connected to the movable plate (52), and the four corner positions of the lower end of the movable plate (52) are all provided with movable components; A lifting device is installed on the upper end of the movable plate (52), and the fixed part of the lifting device is arranged on the top end of the function box (5). First telescopic rods (53) are installed at four corner positions on the upper end of the movable plate (52), and the other ends of the four first telescopic rods (53) are connected to the top end of the function box (5). A power supply (6) is provided on the upper end of the function box (5), and the power supply (6) is electrically connected to the lifting device, the light source generator (7) and the detection instrument (3) respectively.

3. The optical fiber macrobend detection device according to claim 1, wherein: The first mounting member includes a second box body (71), the second box body (71) is attached to the upper end of the mounting plate (1), a first cylinder (75) is provided at the lower end of the second box body (71), and the first cylinder (75) is located in the arc-shaped through groove (13), a first stud is provided at the middle of the lower end of the first cylinder (75), a first pressure plate (74) is sleeved on the outer end of the first stud, and the first pressure plate (74) is attached to the lower end of the mounting plate (1), the outer end of the first stud is threadedly connected to a first nut, and the first nut is located on the lower end of the first pressure plate (74); The second box body (71) is rotatably connected to the second screw rod (73), and the second screw rod (73) is arranged along the length direction of the second box body (71). The outer end of the second screw rod (73) is threadedly connected to the first nut seat (72), the upper end of the first nut seat (72) is connected to the lower end of the light source generator (7), and the light source generator (7) is attached to the upper end of the second box body (71).

4. The optical fiber macrobend detection device according to claim 1, wherein: The second mounting member comprises a first box body (31), the first box body (31) is internally rotatably connected to a third screw rod (312), and the first box body (31) is located on the upper side of the mounting plate (1), the outer end of the third screw rod (312) is threadedly connected to a second nut seat (311), the upper end of the second nut seat (311) is connected to the lower end of the detection instrument (3), and the detection instrument (3) is attached to the upper end of the first box body (31), a second cylinder (313) is provided at the lower end of the first box body (31), and the second cylinder (313) passes through the arc-shaped through groove (13), a second stud is installed in the middle of the lower end of the second cylinder (313), the outer end of the second stud is fitted with a second pressure plate (314), and the second pressure plate (314) is located on the lower side of the mounting plate (1), the outer end of the second stud is threadedly connected to a second nut, and the second nut is located on the lower end of the second pressure plate (314); The upper end surface of the mounting plate (1) is recessed downward to form two first grooves (11), and the two first grooves (11) are located on the front and rear sides of the arc-shaped through groove (13); the lower end of the first box body (31) is symmetrically provided with two first rolling members, and the rolling parts of the two first rolling members are respectively connected in a rolling manner with the two first grooves (11); the lower end surface of the mounting plate (1) is recessed upward to form two second grooves, and the two second grooves are located on the front and rear sides of the arc-shaped through groove (13); the upper end of the second pressing plate (314) is symmetrically provided with two second rolling members, and the rolling parts of the two second rolling members are respectively connected in a rolling manner with the two second grooves.

5. The optical fiber macrobend detection device according to claim 4, characterized in that: The driving member includes a fixed plate (33), which is mounted on the front end of the first box body (31). The lower end of the fixed plate (33) is rotatably connected to a rotating gear (34), and the rotating gear (34) extends into the arc-shaped through groove (13). A driving device is mounted on the upper end of the fixed plate (33), and the output shaft of the driving device is connected to the rotating gear (34). An arc-shaped rack (12) is provided on the front wall of the inner portion of the arc-shaped through groove (13), and the arc-shaped rack (12) and the rotating gear (34) are meshed with each other.

6. The optical fiber macrobend detection device according to claim 1, wherein: A plurality of second telescopic rods are equidistantly mounted on the lower end of the functional cylinder (24), and the second telescopic rods are located inside the elastic member (25). The other ends of the plurality of second telescopic rods are respectively connected to the upper ends of the plurality of support plates (26). A plurality of guide rods (281) are equidistantly mounted on the inner wall of the mounting cylinder (2), and the guide rods (281) are located below the first screw rod (27). The other ends of the plurality of guide rods (281) are all connected to the outer end of the fixed cylinder (23). The plurality of guide rods (281) respectively penetrate the plurality of trapezoidal blocks (28), and the trapezoidal blocks (28) are slidably connected to the guide rods (281).

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