Optical fiber pickup and optical fiber pickup system

Abstract

The utility model provides an optical fiber pickup and an optical fiber pickup system, the optical fiber pickup comprises a shell, a fiber coiling wheel and an optical fiber coil, and the shell is internally provided with an accommodating cavity; the fiber coiling wheel is fixedly arranged in the accommodating cavity; the optical fiber coil is wound on the circumferential outer side of the fiber coiling wheel; wherein a limiting piece is arranged on the fiber coiling wheel so as to limit a winding area of the optical fiber coil on the fiber coiling wheel. The fiber coiling wheel is arranged in the accommodating cavity of the shell, the optical fiber coil is wound on the circumferential outer side of the fiber coiling wheel, and the limiting piece is arranged on the fiber coiling wheel to limit the winding area of the optical fiber coil on the fiber coiling wheel, so that when the sizes of the optical fibers wound on the fiber coiling wheel are different, the limiting piece can limit the optical fibers wound on the fiber coiling wheel, and the optical fibers can be conveniently wound on the fiber coiling wheel. Therefore, the optical fiber on the fiber coiling wheel is prevented from loosening, knotting or breakage of the optical fiber in the pickup is avoided, the optical fiber is protected, and the service life of the optical fiber is prolonged.

Description

Technical Field

[0001] The present application relates to the field of sound pickup technology, and in particular to a fiber optic pickup and a fiber optic pickup system. Background Art

[0002] The working principle of the fiber optic pickup is based on the tiny phase changes that occur when the optical fiber is affected by sound waves. When the sound wave propagates near the optical fiber, it causes tiny mechanical deformation in the optical fiber, resulting in a change in the refractive index in the optical fiber, which in turn causes a slight shift in the phase of the optical signal. These phase changes are detected by an optical detector (such as a photodiode or fiber grating sensor) and converted into a corresponding electrical signal. The electrical signal is then sent to the signal processing system for processing, including steps such as amplification, filtering, and digitization to improve signal quality and adapt to specific application requirements. Ultimately, by decoding and reconstructing the processed electrical signal, the original sound signal can be obtained, realizing the pickup and transmission of sound.

[0003] The fiber reel of the fiber optic pickup is used to provide a winding position for the fiber optic coil. For the same size of fiber reel, different lengths of optical fiber may need to be wound under different pickup working conditions. The tightness of optical fibers of different lengths wound on the fiber reel is different. When winding a shorter optical fiber, the optical fiber cannot be wrapped around the entire fiber reel, which may cause the optical fiber on the reel to loosen, or even cause the optical fiber in the pickup to become knotted or broken. Utility Model Content

[0004] In view of this, the present application provides a fiber optic pickup to solve the problem of loose fibers, or even fiber knots and breakages, caused by the fiber reel winding different lengths in the fiber optic pickup. The present application also provides a fiber optic pickup system including the above-mentioned fiber optic pickup.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An optical fiber pickup, comprising:

[0007] A housing is provided with a receiving cavity;

[0008] A fiber disc wheel is fixedly disposed in the accommodating cavity;

[0009] An optical fiber coil is wound around the circumferential outer side of the fiber disc;

[0010] Wherein, a limiting member is provided on the fiber winding wheel to limit the winding area of the optical fiber coil on the fiber winding wheel.

[0011] Optionally, the limiting member is movably connected to the fiber disc wheel, and the limiting member is positioned by a locking member to fix the position of the limiting member on the fiber disc wheel after the limiting member moves.

[0012] Optionally, the limiting member is a limiting ring provided on the circumferential outer side of the fiber coiling wheel, the limiting ring has a notch, and the optical fiber coil can be guided out from the notch.

[0013] Optionally, a sound receiving component is provided on the shell.

[0014] Optionally, the sound receiving component is a sound receiving hole opened on the shell, and the sound receiving hole is blocked by a sound insulation board, and the sound insulation board is detachably connected to the shell.

[0015] Optionally, the housing includes:

[0016] Cover body;

[0017] a base, detachably connected to the cover;

[0018] a sealing member, disposed between the cover and the base;

[0019] A first connecting piece is protruding from the base, a second connecting piece is provided on the fiber disc wheel, a shock-absorbing block is provided between the first connecting piece and the second connecting piece, and the setting direction of the shock-absorbing block is perpendicular to the protruding direction of the first connecting piece and the second connecting piece.

[0020] Optionally, the shock-absorbing block is connected to the first connecting plate and the second connecting plate by bolts, and a first threaded hole for connecting to the first connecting plate and a second threaded hole for connecting to the second connecting plate are provided on the shock-absorbing block, and the setting directions of the threads in the first threaded hole and the second threaded hole are opposite.

[0021] A fiber optic pickup system comprises a protective tube and any one of the above-mentioned fiber optic pickups, wherein the optical fiber of the fiber optic coil led out from the fiber optic pickup system is passed through the protective tube.

[0022] Optionally, the end region of the protective tube close to the pickup is a bellows, and the shell is provided with a third threaded hole threadedly connected to the bellows.

[0023] Optionally, the optical fiber pickup includes an abutment member connected to the housing, and the abutment member abuts against the corrugated tube to limit the installation position of the corrugated tube.

[0024] The fiber optic pickup provided by the present application sets a fiber reel in the accommodating cavity of the shell, and the optical fiber coil is wound on the circumferential outer side of the fiber reel. A limiter is set on the fiber reel to limit the winding area of the optical fiber coil on the fiber reel. In this way, when the sizes of the optical fibers wound on the fiber reel are different, the limiter can limit the optical fiber wound on the fiber reel to prevent the optical fiber on the fiber reel from loosening, avoid the optical fiber in the pickup from being knotted or broken, thereby protecting the optical fiber and improving the service life of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0026] Figure 1 A schematic diagram of the structure of the optical fiber pickup provided in this embodiment;

[0027] Figure 2 for Figure 1 Sectional view at AA;

[0028] Figure 3 for Figure 1 Cross-section at BB;

[0029] Figure 4 Schematic diagram of the structure of the fiber disc wheel;

[0030] Figure 5 is a structural diagram of the base;

[0031] Figure 6 This is a schematic diagram of the structure of the optical fiber pickup installed on the device to be tested;

[0032] Figure 7 This is a schematic diagram of the structure of the lower shell at one angle;

[0033] Figure 8 This is a schematic structural diagram of a housing with a sound insulation board provided at another angle;

[0034] Figure 9 A schematic diagram of the structure of the housing without a sound insulation board at another angle;

[0035] Figure 10 This is a schematic diagram of the structure of the protective tube in a straight state;

[0036] Figure 11 It is a structural diagram of the protective tube in a bent state;

[0037] Figure 12This is a schematic diagram of the structure of the hidden cover of the optical fiber pickup;

[0038] Figure 13 It is a structural diagram of the shock-absorbing block;

[0039] Figure 14 This is a schematic diagram of the structure of the cascaded fiber optic pickup in the fiber optic pickup system.

[0040] Figures 1-14 middle:

[0041] 1-housing, 2-fiber reel, 3-fiber coil, 4-limiting member, 5-sound receiving member, 6-sound insulation board, 7-first connecting piece, 8-second connecting piece, 9-shock absorber, 10-protective tube, 11-abutting member, 12-fiber margin area, 13-third threaded hole, 14-fiber;

[0042] 101 - cover, 102 - base, 103 - sealing member, 401 - notch, 901 - first threaded hole, 902 - second threaded hole, 1001 - bellows. DETAILED DESCRIPTION

[0043] The present application provides a fiber optic pickup and a fiber optic pickup system including the fiber optic pickup.

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] like Figures 1 to 14 As shown, an embodiment of the present application provides a fiber optic pickup that can be installed on equipment to be inspected for testing. For example, in conveying environments such as coal, thermal power plants, and ports, belt conveyors are often affected by material impact and component anomalies, resulting in failures that can seriously impact the entire production process and lead to safety accidents. The fiber optic pickup can effectively detect belt deviation, wear, roller anomalies, and other issues in advance, improving the safety of equipment in these scenarios. The fiber optic pickup primarily comprises a housing 1, a fiber reel 2, and a fiber coil 3. The housing 1 includes a cavity for mounting the fiber reel 2 and the optical fiber. The fiber reel 2 is fixedly mounted within the cavity and can be either detachably fixed to the housing 1 or integrally formed with the housing 1. The fiber coil 3 is wound around the outer circumference of the fiber reel 2, forming a ring-shaped integral body, thereby enhancing the ability to identify sound information transmitted by the optical fiber.

[0046] Specifically, a limiter 4 is provided on the disc 2 to limit the winding area of the optical fiber coil 3 on the disc 2. Exemplarily, the limiter 4 can be an annular protrusion provided on the disc 2, located on the circumferential outer side of the disc 2. When the required winding area of the optical fiber coil 3 on the disc 2 is large, the optical fiber coil 3 is wound around the entire circumferential outer side of the disc 2. When the required winding area of the optical fiber coil 3 on the disc 2 is small, the optical fiber coil 3 is wound from one side of the disc 2 to the position of the limiter 4, thereby limiting the winding area of the optical fiber coil 3 on the disc 2. Furthermore, the limiter 4 can be a fixing sleeve that secures the optical fiber coil 3 to the disc 2. When the required optical fiber coil 3 does not need to wrap around the entire disc 2, after the optical fiber coil 3 is wound around the disc 2 to a desired area, the fixing sleeve is placed outside the end area of the optical fiber coil 3 to limit the winding area of the optical fiber coil 3 on the disc 2.

[0047] It should be noted that the connection method between the position limiting member 4 and the fiber disc 2 is not limited herein. The position limiting member 4 can be fixedly connected to the fiber disc 2 or detachably connected to the fiber disc 2. When the position limiting member 4 is detachably connected to the fiber disc 2, the fiber disc 2 can be fixed at various positions along the circumference of the fiber disc 2. This improves the convenience of adjusting the position of the position limiting member 4 on the fiber disc 2 and facilitates adjustment of the winding area of the optical fiber coil 3 on the fiber disc 2. Exemplarily, the detachable connection method between the position limiting member 4 and the fiber disc 2 can be bolt connection, clamping connection, adhesive connection, magnetic connection, etc.

[0048] It should be noted that the axial direction of the fiber disc wheel 2 refers to Figure 4 The direction indicated by the double-headed arrow Z.

[0049] The fiber optic pickup of the above structure is constructed by arranging the fiber reel 2 in the accommodating cavity of the shell 1, and the optical fiber coil 3 is wound on the circumferential outer side of the fiber reel 2. A limiter 4 is provided on the fiber reel 2 to limit the winding area of the optical fiber coil 3 on the fiber reel 2. In this way, when the sizes of the optical fibers wound on the fiber reel 2 are different, the limiter 4 can limit the optical fiber wound on the fiber reel 2 to prevent the optical fiber on the fiber reel 2 from loosening, avoid the optical fiber in the pickup from being knotted or broken, thereby protecting the optical fiber and improving the service life of the optical fiber.

[0050] On the basis of the above embodiment, the limiting member 4 is further movably connected to the fiber winding wheel 2, and is positioned by a locking member (not shown in the figure) to fix the position of the limiting member 4 on the fiber winding wheel 2 after the movement. Specifically, when the area on the fiber winding wheel 2 where the optical fiber coil 3 needs to be wound changes, the limiting member 4 is moved along the fiber winding wheel 2 to the target position, and then the limiting member 4 is positioned by the locking member, and finally the limiting member 4 is fixed to the target position of the fiber winding wheel 2. This arrangement can conveniently adjust the position of the limiting member 4, thereby improving the convenience of adjusting the winding area of the optical fiber coil 3 on the fiber winding wheel 2.

[0051] In this embodiment, an optional implementation is provided, in which the locking member can be a pin, a limiting groove is provided on the fiber disc 2, and a limiting hole is provided on the limiting member 4. The pin is adapted to the limiting hole and the limiting groove, and the pin can pass through the limiting hole and be inserted into the limiting groove to achieve positioning of the limiting member 4. Of course, in order to increase the adjustable range of the limiting member 4, multiple limiting grooves are provided in the axial direction of the fiber disc 2; in order to improve the stability of the positioning of the limiting member 4 by the pin, multiple limiting holes are provided in the circumferential direction of the limiting member 4, and multiple limiting grooves are provided in the circumferential direction of the fiber disc 2.

[0052] In this embodiment, an alternative embodiment is provided in which the locking member can be a bolt. A threaded groove is provided on the fiber disc 2, and a threaded hole is provided on the stopper 4. The bolt is adapted to fit within the threaded groove and the threaded hole, and can be inserted through the threaded hole into the threaded groove to position the stopper 4. The arrangement of the threaded groove, threaded hole, and bolt is similar to that of the pin, stopper groove, and stopper hole in the aforementioned embodiment and will not be further described here. This arrangement further enhances the stability of the position of the stopper 4.

[0053] In this embodiment, another optional implementation is provided, in which an elastic protrusion is provided on the side of the limiting member 4 close to the fiber disc 2, and a groove is provided on the outer side of the fiber disc 2. The groove and the elastic protrusion are adapted to each other, and the elastic protrusion springs into the groove to limit the position of the limiting member 4 and the fiber disc 2. A button for releasing the elastic protrusion from the groove is provided on the side of the limiting member 4 away from the fiber disc 2. In this way, the positioning and release between the limiting member 4 and the fiber disc 2 can be conveniently achieved.

[0054] It should be noted that, here, the movement of the limiting member 4 relative to the fiber disc 2 is not limited, and the limiting member 4 and the fiber disc 2 can be connected in a sliding and / or rotational manner.

[0055] In some embodiments, as Figure 4As shown, the limiting member 4 is a limiting ring provided on the circumferential outer side of the fiber reel 2. This improves the limiting effect of the limiting member 4 on the optical fiber coil 3 and improves the smoothness of the winding of the optical fiber coil 3 on the fiber reel 2. Furthermore, the limiting ring has a notch 401, through which the optical fiber coil 3 can be guided. Here, by providing the notch 401, the optical fiber of the optical fiber coil 3 can be easily guided through the notch 401, thereby facilitating the winding of optical fibers of different winding methods on the fiber reel 2. Preferably, the notch 401 is a planar notch 401, which facilitates the guidance of the optical fiber and ensures the smoothness of the winding of the optical fiber on the fiber reel 2.

[0056] In some embodiments, as Figure 6 As shown, under normal circumstances, the fiber optic pickup is installed on the equipment to be installed. By providing a sound receiving component 5 on the housing 1, the fiber optic pickup can receive sound information through the air medium. In this case, the fiber optic pickup can not only detect the component to be detected through the optical fiber, but also detect whether the equipment to be installed is in a fault state through the air medium. For example, taking the application of the fiber optic pickup in a mine working environment as an example, the fiber optic pickup is usually installed on a belt conveyor.

[0057] It should be noted that the sound receiving component 5 may be a sound receiving hole opened on the housing 1 , or the sound receiving component 5 may be a microphone installed on the housing 1 .

[0058] Furthermore, when the sound receiving component 5 is a sound receiving hole formed in the housing 1, the sound receiving hole can be blocked by a sound insulation board 6, and the sound insulation board 6 is detachably connected to the housing 1. As can be seen from the above, when the fiber optic pickup is mounted on the mounting device and the sound receiving hole is blocked by the sound insulation board 6, the fiber optic pickup can detect the operating status of the mounting device through the vibration of the mounting device. In other words, when the sound receiving hole is not needed, the sound insulation board 6 can be used to block the sound receiving hole; when the sound receiving hole is needed, the sound insulation board 6 can be released from the blockage of the sound receiving hole.

[0059] It should be noted that there is no limitation on the detachable connection method between the sound insulation board 6 and the shell 1. The detachable connection method can be at least one of interference fit, bolt connection, magnetic connection, snap connection, etc., or a combination thereof.

[0060] Of course, when the sound receiving component 5 is a microphone, when the microphone is not needed to receive sound through the air medium, the microphone can also be turned off by turning off the switch of the microphone.

[0061] In some embodiments, the housing 1 includes a cover 101, a base 102, and a seal 103. The base 102 is detachably connected to the cover 101. Typically, to enhance the stability of the connection between the base 102 and the cover 101, the base 102 and the cover 101 are connected by bolts. Specifically, the seal 103 is disposed between the cover 101 and the base 102. This not only provides a waterproof seal, but also, since the seal 103 is typically made of a shock-absorbing material such as rubber or polytetrafluoroethylene, it also provides a shock-absorbing effect, reducing the impact of vibration on the sound received by the fiber optic pickup, thereby improving the accuracy of the sound detection by the fiber optic pickup.

[0062] Among them, such as Figure 2 As shown, a first connecting piece 7 is protruding from the base 102, a second connecting piece 8 is provided on the fiber disc 2, and a shock-absorbing block 9 is provided between the first connecting piece 7 and the second connecting piece 8. The arrangement direction of the shock-absorbing block 9 is perpendicular to the protruding direction of the first connecting piece 7 and the second connecting piece 8. This arrangement can improve the stability of the connection between the fiber disc 2 and the base 102, and the shock-absorbing block 9 can better achieve a shock-absorbing effect.

[0063] It should be noted that the first connecting piece 7 can be detachably connected to the base 102 or can be integrally formed with the base 102 ; correspondingly, the second connecting piece 8 can be detachably connected to the fiber disc 2 or can be integrally formed with the fiber disc 2 .

[0064] For example, the setting direction of the shock absorbing block 9 is Figure 2 In the direction indicated by the double-headed arrow X, the protruding direction of the first connecting piece 7 and the second connecting piece 8 is Figure 2 The direction indicated by the double-headed arrow Y.

[0065] In addition, there may be other relationships between the setting direction of the shock-absorbing block 9 and the protruding direction of the first connecting piece 7 and the second connecting piece 8. For example, the setting direction of the shock-absorbing block 9 and the protruding direction of the first connecting piece 7 and the second connecting piece 8 may be an acute angle or an obtuse angle, as long as the outer side surface of the shock-absorbing block 9 is in contact with the wall surface of the first connecting piece 7 and the second connecting piece 8 to improve the stability of the above connection.

[0066] like Figure 13As shown, it should be noted that since the shock absorber 9 is positioned between the first connecting piece 7 of the base 102 and the second connecting piece 8 of the fiber reel 2, the parallelism between the first and second connecting pieces 7 and 8 directly affects the levelness of the fiber reel 2. If the fiber reel 2 is not installed flush, the gaps between the fiber reel 2, the base 102, and the cover 101 will be uneven. Under strong vibration conditions, the fiber reel 2 may collide with the housing 1, significantly affecting the accuracy and precision of sound collected by the fiber pickup. Therefore, the shock absorber 9 is connected to the first and second connecting pieces 7 and 8 via bolts. The shock absorber 9 defines a first threaded hole 901 for connecting to the first connecting piece 7 and a second threaded hole 902 for connecting to the second connecting piece 8. The threads in the first and second threaded holes 901 and 902 are arranged in opposite directions. This design, with its reverse thread design, effectively prevents distortion of the silicone rubber caused by rotating the screws during installation, thereby improving the levelness of the fiber reel 2.

[0067] A fiber optic pickup system includes a fiber optic pickup. Since the fiber optic pickup system includes the fiber optic pickup, the beneficial effects of the fiber optic pickup system brought by the fiber optic pickup are described above and will not be repeated here.

[0068] Among them, such as Figure 14 As shown, the fiber optic pickup system includes a protective tube 10 and a fiber optic pickup. The optical fiber 14 led from the fiber optic coil 3 of the fiber optic pickup system is passed through the protective tube 10. The fiber optic pickup system includes multiple fiber optic pickups and multiple protective tubes 10, wherein the fiber optic pickups and protective tubes 10 are arranged in a cyclic alternating pattern. The optical fiber 14 led from the fiber optic coil 3 of the fiber optic pickup is passed through the protective tube 10 to achieve cascading of the fiber optic pickups.

[0069] In some embodiments, the end area of the protective tube 10 near the optical fiber pickup is a corrugated tube 1001. Specifically, the corrugated tube 1001 has good bending performance and can be bent as needed, making it convenient to use in complex environments. Figure 5 As shown, the shell 1 opens a third threaded hole 13 which is threadedly connected to the bellows 1001. Such a setting can improve the stability of the connection between the bellows 1001 and the shell 1, and can improve the convenience of the connection between the bellows 1001 and the shell 1, and improve the installation efficiency of the bellows 1001 and the shell 1.

[0070] The location of the third threaded hole 13 on the housing 1 is not limited. The third threaded hole 13 can be provided on the base 102 or on the cover 101 , or partially on the base 102 and partially on the cover 101 .

[0071] It should be noted that the setting area of the bellows 1001 in the protective tube 10 is not limited here. The bellows 1001 can be set in any part of the protective tube 10. Of course, in order to improve the bending performance of the protective tube 10, the entire protective tube 10 can be set as the bellows 1001 structure.

[0072] See Figure 10 and Figure 11 When the fiber optic pickup system is arranged in the aforementioned cascade configuration, the optical fiber 14 within the protective tube 10 will bend to some extent. To ensure that the optical fiber coil 3 fixed on the fiber reel 2 within the fiber optic pickup is not pulled and thus loses power, a fiber surplus area 12 is provided within the housing 1 of the fiber optic pickup. This fiber surplus area 12 is used to accommodate excess optical fiber 14. When the optical fiber 14 is twisted by the bending of the protective tube 10, it will pull on the optical fiber 14 within the fiber surplus area 12 within the housing 1, thereby preventing the optical fiber coil 3 on the fiber reel 2 from being pulled, thereby protecting the optical fiber coil 3 on the fiber reel 2.

[0073] In some embodiments, the fiber optic pickup includes an abutment member 11 connected to the housing 1. The abutment member 11 abuts against the bellows 1001 to limit the installation position of the bellows 1001. The abutment member 11 can be detachably connected to the housing 1 or can be integrally formed with the housing 1. Exemplarily, the abutment member 11 is a shock-absorbing structure that has an interference fit with the housing 1. Such abutment member 11 not only limits the installation position of the bellows 1001 but also enhances the vibration resistance of the housing 1, thereby improving the stability of the fiber optic pickup.

[0074] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0075] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0076] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0077] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0078] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly illustrate the technical solutions and cannot be used to limit the scope of protection of the present application.

[0079] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A fiber optic pickup, characterized in that: include: A housing is provided with a receiving cavity; A fiber disc wheel is fixedly disposed in the accommodating cavity; An optical fiber coil is wound around the circumferential outer side of the fiber disc; Wherein, a limiting member is provided on the fiber winding wheel to limit the winding area of the optical fiber coil on the fiber winding wheel.

2. The optical fiber pickup according to claim 1, wherein: The limiting member is movably connected to the fiber disc wheel, and the limiting member is positioned by a locking member to fix the position of the limiting member after the limiting member moves on the fiber disc wheel.

3. The optical fiber pickup according to claim 1 or 2, characterized in that: The limiting member is a limiting ring arranged on the circumferential outer side of the fiber coiling wheel. The limiting ring has a notch, and the optical fiber coil can be led out from the notch.

4. The optical fiber pickup according to claim 1, wherein A sound receiving component is provided on the shell.

5. The optical fiber pickup according to claim 4, characterized in that The sound receiving component is a sound receiving hole provided on the shell, and the sound receiving hole is blocked by a sound insulating board, and the sound insulating board is detachably connected to the shell.

6. The optical fiber pickup according to claim 1, wherein: The housing comprises: Cover body; a base, detachably connected to the cover; a sealing member, disposed between the cover and the base; A first connecting piece is protruding from the base, a second connecting piece is provided on the fiber disc wheel, a shock-absorbing block is provided between the first connecting piece and the second connecting piece, and the setting direction of the shock-absorbing block is perpendicular to the protruding direction of the first connecting piece and the second connecting piece.

7. The optical fiber pickup according to claim 6, characterized in that The shock-absorbing block is connected to the first connecting piece and the second connecting piece by bolts. The shock-absorbing block is provided with a first threaded hole for connecting to the first connecting piece and a second threaded hole for connecting to the second connecting piece, and the setting directions of the threads in the first threaded hole and the second threaded hole are opposite.

8. A fiber optic pickup system, characterized in that: It comprises a protective tube and the optical fiber pickup according to any one of claims 1 to 7, wherein the optical fiber coil and the optical fiber led out from the optical fiber pickup system are passed through the protective tube.

9. The optical fiber pickup system according to claim 8, characterized in that: The end area of the protective tube close to the pickup is a bellows, and the shell is provided with a third threaded hole threadedly connected to the bellows.

10. The optical fiber pickup system according to claim 9, characterized in that: The optical fiber pickup includes an abutment member connected to the housing, and the abutment member abuts against the corrugated tube to limit the installation position of the corrugated tube.

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