A protection device for preventing fiber grating breakage of a fiber grating static level gauge

Abstract

This utility model discloses a protective device for preventing fiber optic grating breakage in a fiber optic static level, relating to the field of leveling technology. It includes a leveling device, fiber optic ferrules, and an internal ferrule. One end of the fiber optic ferrule is inserted into both sides of the interior of the leveling device, and is fixedly connected to the internal ferrule. The fiber optic ferrule includes a ferrule body mounted on one side of the interior, with movable blocks fixedly mounted on both sides above and below the midpoint of the ferrule body. Limiting grooves are formed on both sides of the movable blocks inside the ferrule body. In this utility model, when the fiber optic static level is subjected to tensile stress during transportation, the fiber optic ferrules are connected to the grooves via the ferrule body. The movement of the ferrule body within the limiting grooves via the limiting blocks allows the fiber optic ferrules to separate, preventing breakage during tension. The pop-out markings also allow personnel to easily observe the separation between the fiber and the equipment, thus protecting the fiber.

Description

Technical Field

[0001] This utility model relates to the field of leveling instrument technology, specifically a protective device for preventing fiber grating breakage in a fiber grating hydrostatic level. Background Technology

[0002] Fiber Bragg grating hydrostatic levels are used to monitor the vertical displacement and settlement of objects. Through fiber Bragg grating sensing technology, it converts changes in liquid level at various measuring points into wavelength signals, which are then transmitted via optical fiber and analyzed. It can monitor the settlement of bridges, dams, building foundations, etc., in real time with high precision. It has advantages such as resistance to electromagnetic interference, a wide measurement range, and good long-term stability, providing reliable data support for engineering safety monitoring.

[0003] The existing Chinese utility model patent with publication number CN221259867U discloses a fiber optic grating static level. This fiber optic grating static level includes a base with protective cylinders fixedly connected to both ends of its upper surface. A level housing is inserted inside the protective cylinders. A displacement indicator is connected to one end of the level housing, and a measuring rod is connected to one end of the displacement indicator. Hinges are provided on both sides of the base, and pull rods are hinged to the surfaces of the hinges. The pull rods are located on one side of the protective cylinders, and a handle is provided at one end of the pull rod. A combined structure is provided on one side of the pull rod and connected to one side of the level housing. The handle structure includes a crossbar and a rotating shaft, with the rotating shaft connected to both ends of the crossbar. This allows for combined installation and positioning, facilitating testing and use. Furthermore, the pull rod on the side connects the handle structure and the combined structure, aiding in positioning and facilitating lifting. Alternatively, they can be positioned separately to avoid interference, ensuring stability and ease of adjustment.

[0004] Currently, the protective devices used to prevent fiber grating breakage in fiber grating hydrostatic levels still have the following problems:

[0005] A fiber Bragg grating hydrostatic level is an instrument that utilizes fiber Bragg grating sensor technology. It measures elevation differences through the principle of communicating vessels and the wavelength-sensitive characteristics of fiber Bragg gratings, offering advantages such as resistance to electromagnetic interference and high precision. However, the inherent characteristics of fiber Bragg gratings make them highly susceptible to breakage under stress, necessitating corresponding tensile and compressive strength structures to protect them. Utility Model Content

[0006] The purpose of this invention is to provide a protective device for preventing fiber grating breakage in a fiber grating hydrostatic level, thereby solving the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a protective device for preventing fiber grating breakage in a fiber grating hydrostatic level, comprising a level device, a fiber optic ferrule, and an internal ferrule. One end of the fiber optic ferrule is inserted through both sides of the interior of the level device, and one end of the fiber optic ferrule is fixedly connected to the internal ferrule. The fiber optic ferrule includes a ferrule body installed on one side of the interior, and movable blocks are fixedly installed on both sides of the midpoint of the ferrule body. Limiting grooves located inside the ferrule body are opened on both sides of the movable blocks. Limiting blocks are installed inside the limiting grooves, and the two ends of the limiting blocks are elastically connected to a spring body above them.

[0009] The internal ferrule includes a fixed post installed in the middle, and a winding optical fiber device extends inside the internal ferrule. A locator is fixedly installed near the top of the fixed post, and the bottom of the fixed post is fixedly connected to the center of gravity cone.

[0010] Preferably, the other end of the optical fiber ferrule is connected to the optical fiber body, and the surface of the leveling device is provided with scale lines, and a fixing screw is installed at the front bottom of the leveling device.

[0011] Preferably, the surface of the optical fiber ferrule is provided with a marking surface, and the surface of the marking surface is coated with color, and one side of the marking surface is located inside the leveling instrument device, and one end of the spring body is connected to the fixing block.

[0012] Preferably, the fiber optic ferrule has a groove inside, and the ferrule body is located inside the groove. A fixing block is fixedly installed on one side of the groove inside the fiber optic ferrule, and the limiting block is movably located on the upper and lower sides of the groove.

[0013] Preferably, the fiber winding device is wound around the outside of the fixed column, and a circular hole is opened in the middle of the top of the leveling device, and the locator is fixedly installed in the circular hole inside the leveling device.

[0014] Preferably, the center of gravity cone is located above the inner midpoint of the leveling instrument, and the fixing column is located below the inner part of the leveling instrument.

[0015] Preferably, the surface of the leveling device is made of transparent glass, and the leveling device is connected to the optical fiber body via an optical fiber ferrule.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] 1. When the fiber optic grating static level is subjected to tension during transportation, the fiber optic ferrule is connected to the ferrule body and the groove. The ferrule body can be separated from the fiber optic ferrule by the setting of the limiting block moving in the limiting groove. This can prevent the fiber from breaking during tension. At the same time, the pop-out marking surface makes it easy for the staff to see the separation between the fiber and the equipment, thus protecting the fiber.

[0018] 2. When the fiber optic static level is subjected to tension during transportation, the internal ferrule reserves a certain length of fiber optic cable through a fiber winding device to facilitate breakage of the fiber optic cable when it is pulled. At the same time, a center of gravity cone is installed in the middle of the level device. The center of gravity cone is set with a low center of gravity to prevent the level device from tipping over when the fiber optic cable is pulled, thus providing balance protection for the entire level device. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the internal insert of this utility model;

[0023] Figure 3 This is an enlarged structural diagram of the limiting block of this utility model;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the waterproof roof panel of this utility model;

[0025] In the picture:

[0026] 1. Leveling device; 2. Fiber optic ferrule; 21. Marking surface; 22. Ferrule body; 23. Moving block; 24. Limiting groove; 25. Limiting block; 26. Spring body; 27. Fixing block; 3. Fiber optic body; 4. Scale line; 5. Fixing screw; 6. Internal ferrule; 61. Fiber optic winding device; 62. Fixing post; 63. Positioner; 64. Center of gravity cone. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] Please see Figures 1-4 A protective device for preventing fiber grating breakage in a fiber grating hydrostatic level includes a level device 1, a fiber optic ferrule 2, and an internal ferrule 6. One end of the fiber optic ferrule 2 is inserted into both sides of the interior of the level device 1. The fiber optic ferrule 2 includes a ferrule body 22 installed on one side of the interior, and movable blocks 23 are fixedly installed on both sides of the midpoint of the ferrule body 22. Limiting grooves 24 located inside the ferrule body 22 are opened on both sides of the movable blocks 23. Limiting blocks 25 are installed inside the limiting grooves 24, and the two ends of the limiting blocks 25 are elastically connected to the upper spring body 26.

[0029] In this embodiment, the surface of the fiber optic ferrule 2 is provided with a marking surface 21, and the surface of the marking surface 21 is coated with color. One side of the marking surface 21 is located inside the leveling device 1. One end of the spring body 26 is connected to the fixing block 27. The inside of the fiber optic ferrule 2 is provided with a groove, and the ferrule body 22 is located inside the groove. The fixing block 27 is fixedly installed on one side of the groove inside the fiber optic ferrule 2. The limiting block 25 is movably located on the upper and lower sides of the groove.

[0030] This utility model relates to a protective device for preventing fiber optic grating breakage in a fiber optic static level. The fiber optic ferrule 2 is spliced ​​and installed by inserting the ferrule body 22 into the groove. When the fiber optic body 3 is pulled out, one side of the ferrule body 22 is subjected to tension, which drives the moving block 23 to move. The two ends of the moving block 23 are inclined, which makes it easy for the limiting block 25 to move from one end of the moving block 23 to the other end, exposing the colored marking surface 21, so that the staff can see the marking and know that the fiber optic body 3 has been loosened.

[0031] For details, please refer to the following: Figure 1 As shown, the other end of the fiber optic ferrule 2 is connected to the fiber optic body 3, and the surface of the leveling device 1 is provided with scale lines 4, and a fixing screw 5 is installed at the front bottom of the leveling device 1. The surface of the leveling device 1 is made of transparent glass, and the leveling device 1 is connected to the fiber optic body 3 through the fiber optic ferrule 2.

[0032] For details, please refer to the following: Figure 2As shown, one end of the fiber optic ferrule 2 is fixedly connected to the inner ferrule 6. The inner ferrule 6 includes a fixing post 62 installed in the middle, and a winding fiber optic device 61 extends inside the inner ferrule 6. A locator 63 is fixedly installed near the top of the fixing post 62, and the bottom of the fixing post 62 is fixedly connected to the center of gravity cone 64.

[0033] In this embodiment, the fiber winding device 61 is wound around the outside of the fixed column 62, and a circular hole is opened in the middle of the top of the level device 1. The locator 63 is fixedly installed in the circular hole inside the level device 1. The center of gravity cone 64 is located above the midpoint inside the level device 1, and the fixed column 62 is located below the inside of the level device 1.

[0034] This invention relates to a protective device for preventing fiber optic grating breakage in a fiber optic static level. The fiber optic body 3 is inserted into the fiber optic ferrule 2 and connected to a fixing post 62 at the midpoint of the inner ferrule 6. The fixing post 62 extends the extended winding fiber device 61, increasing the tensile length of the fiber optic body 3 and preventing it from breaking under tension. The fiber optic body 3 is connected to one end of the winding fiber device 61 via a snap fastener, facilitating its detachment after being pulled. Simultaneously, a center of gravity cone 64 is provided below the midpoint of the fixing post 62. The center of gravity cone 64 adopts the principle of a self-righting toy with a heavier bottom to maintain the balance of the entire level device 1 and prevent the level device 1 from tipping over when subjected to force and pulling.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A protection device for preventing the breakage of a fiber grating of a fiber grating static level, comprising a level device (1), a fiber ferrule (2) and an internal ferrule (6), characterized in that: One end of the fiber optic ferrule (2) is inserted through both sides of the inside of the leveling device (1), and one end of the fiber optic ferrule (2) is fixedly connected to the internal ferrule (6). The fiber optic ferrule (2) includes a ferrule body (22) installed on one side inside, and a moving block (23) is fixedly installed on both sides of the midpoint of the ferrule body (22). The moving block (23) has a limiting groove (24) located inside the ferrule body (22) on both sides. A limiting block (25) is installed inside the limiting groove (24), and the two ends of the limiting block (25) are elastically connected to the spring body (26) above. The internal ferrule (6) includes a fixed post (62) installed in the middle, and a winding fiber device (61) extends inside the internal ferrule (6). A locator (63) is fixedly installed near the top of the fixed post (62), and the bottom of the fixed post (62) is fixedly connected to the center cone (64).

2. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 1, characterized in that: The other end of the fiber optic ferrule (2) is connected to the fiber optic body (3), and the surface of the leveling device (1) is provided with scale lines (4), and a fixing screw (5) is installed at the bottom front of the leveling device (1).

3. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 1, characterized in that: The surface of the fiber optic ferrule (2) is provided with a marking surface (21), and the surface of the marking surface (21) is painted with color. One side of the marking surface (21) is located inside the leveling device (1). One end of the spring body (26) is connected to the fixing block (27).

4. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 3, characterized in that: The fiber optic ferrule (2) has a groove inside, and the ferrule body (22) is located inside the groove. The fixing block (27) is fixedly installed on one side of the groove inside the fiber optic ferrule (2), and the limiting block (25) is movably located on the upper and lower sides of the groove.

5. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 1, characterized in that: The fiber winding device (61) is wound around the outside of the fixed column (62), and a round hole is opened in the middle of the top of the level device (1), and the locator (63) is fixedly installed in the round hole inside the level device (1).

6. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 5, characterized in that: The centroid cone (64) is located above the midpoint inside the leveling device (1), and the fixed column (62) is located below the inside of the leveling device (1).

7. The protection device for preventing the fiber grating from being broken in the fiber grating static level gauge according to claim 2, characterized in that: The surface of the leveling device (1) is made of transparent glass, and the leveling device (1) is connected to the optical fiber body (3) through the optical fiber ferrule (2).

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