Assembling and disassembling mechanism of fiber grating sensor

Abstract

The utility model relates to a dismounting mechanism of a fiber grating sensor, and relates to the technical field of fiber grating sensors. The clamping device comprises a telescopic mounting frame and a clamping assembly, the clamping assembly is arranged at the end of the telescopic mounting frame, the clamping assembly comprises two clamping plates movably arranged on the telescopic mounting frame, and the end of a clamping fiber grating sensor is clamped between the two clamping plates. The optical fiber grating sensor dismounting device has the effect of dismounting different types of optical fiber grating sensors.

Description

Technical Field

[0001] This application relates to the technical field of fiber Bragg grating sensors, and particularly to a disassembly and assembly mechanism for fiber Bragg grating sensors. Background Art

[0002] A fiber Bragg grating sensor is actually a special application of an optoelectronic sensor. Due to the advantages of simple structure, high measurement accuracy, easy automation and digitization in grating measurement, it has been widely used. A grating mainly consists of a scale grating and a grating reading head. By making a grating area with a periodic refractive index distribution at a specific position of the optical fiber;

[0003] Fiber Bragg grating sensors on the market are installed by being fixed with brackets or sleeves during use. However, the lengths and end diameters of different models of fiber Bragg grating sensors are different. It is difficult to apply the fixing methods with brackets or sleeves to different models of fiber Bragg grating sensors, resulting in very inconvenient disassembly and assembly of fiber Bragg grating sensors. Summary of the Utility Model

[0004] In order to be able to disassemble and assemble different types of fiber Bragg grating sensors, this application provides a disassembly and assembly mechanism for fiber Bragg grating sensors.

[0005] The disassembly and assembly mechanism for fiber Bragg grating sensors provided by this application adopts the following technical solutions:

[0006] A disassembly and assembly mechanism for fiber Bragg grating sensors includes a telescopic mounting frame and a clamping assembly. The clamping assembly is arranged at the end of the telescopic mounting frame. The clamping assembly includes two clamping plates movably arranged on the telescopic mounting frame, and the end of the fiber Bragg grating sensor to be clamped is clamped between the two clamping plates.

[0007] By adopting the above technical solutions, when it is necessary to install a fiber Bragg grating sensor, the length of the telescopic mounting frame is adjusted according to the model length of the fiber Bragg grating sensor. Then, by adjusting the distance between the two clamping plates, fiber Bragg grating sensors of various models can be fixed on the telescopic mounting frame through the clamping assembly, thereby realizing the disassembly and assembly of different models of fiber Bragg grating sensors.

[0008] Preferably, the telescopic mounting frame includes a frame, a first fixing plate and a second fixing plate. One ends of the first fixing plate and the second fixing plate are respectively slidably connected to opposite sides inside the frame, and the other ends of the first fixing plate and the second fixing plate are used for installing the clamping assembly.

[0009] By adopting the above technical solutions, by adjusting the distance between the first fixing plate and the second fixing plate, the distance between the clamping assemblies can be adjusted, so as to be applicable to the installation of fiber Bragg grating sensors of different lengths.

[0010] Preferably, the telescopic mounting bracket further includes a plug pin. Jacks that are inserted and cooperated with the plug pin are respectively formed at the ends of the frame close to the first fixing plate and the second fixing plate; a plurality of first limiting grooves are formed at one end of the first fixing plate close to the second fixing plate along the sliding direction of the first fixing plate, and a plurality of second limiting grooves are formed at one end of the second fixing plate close to the first fixing plate along the sliding direction of the second fixing plate, and both the first limiting grooves and the second limiting grooves are inserted and cooperated with the plug pin.

[0011] By adopting the above technical solution, after the distance between the first fixing plate and the second fixing plate is adjusted, the two plug pins pass through the through holes from the outside of the frame and are respectively inserted into the corresponding first limiting grooves and second limiting grooves, so that the length of the telescopic mounting bracket can be locked.

[0012] Preferably, a first elastic member is sleeved outside the plug pin, and the first elastic member is located outside the frame. A limiting ring is further provided at the end of the plug pin away from the frame; one end of the first elastic member is fixedly connected to the limiting ring, and the other end of the first elastic member is fixedly connected to the frame.

[0013] By adopting the above technical solution, when the length of the telescopic mounting bracket does not need to be adjusted, the first elastic member is in a normal state. When the length of the telescopic mounting bracket needs to be adjusted, the plug pin is pulled to withdraw the plug pin from the first limiting groove and / or the second limiting groove. At this time, the first elastic member is in a stretched state; then the position of the first fixing plate and / or the second fixing plate is adjusted, and after the adjustment, the plug pin is aligned with the corresponding first limiting groove and / or the second limiting groove, and the plug pin can be automatically inserted into the first limiting groove and / or the second limiting groove under the elastic force of the first elastic member.

[0014] Preferably, limiting blocks are respectively provided at the ends of the first fixing plate and the second fixing plate close to each other, and the limiting blocks are located inside the frame.

[0015] By adopting the above technical solution, by providing the limiting blocks, the first fixing plate and the second fixing plate can be maximally prevented from falling off from inside the frame.

[0016] Preferably, the clamping assembly further includes a mounting plate fixedly connected to the telescopic mounting bracket, and the clamping plate is movably arranged on the mounting plate. A threaded groove is formed in the mounting plate close to the clamping plate, a threaded rod is inserted into the interior of the threaded groove, and the threaded rod is in threaded cooperation with the threaded groove; one end of the threaded rod is rotatably connected to the side of the clamping plate away from the fiber Bragg grating sensor, and the other end of the threaded rod is located outside the mounting plate away from the fiber Bragg grating sensor.

[0017] By adopting the above technical solution, the threaded rod is rotated so that the two clamping plates are moved closer or farther away, thereby being able to adapt to fiber optic Bragg grating sensors of different sizes.

[0018] Preferably, the end of the threaded rod away from the clamping plate is fixedly connected with a knob.

[0019] By adopting the above technical solution, the threaded rod can be easily rotated by setting the knob.

[0020] Preferably, it also includes a limit assembly, which includes two limit plates movably arranged on the mounting plate, the limit plates are arranged on opposite sides of the mounting plate, and the limit plates are arranged on the outer side of the clamping assembly away from the telescopic mounting frame; slots are provided on the mounting plate, and the ends of the limit plates that are away from each other are slidably connected in the corresponding slots, and the ends of the limit plates that are close to each other are connected to each other.

[0021] By adopting the above technical solution, when installing the fiber grating sensor, the fiber grating sensor enters between the two clamping plates by pushing open the two limit plates, and then the two limit plates are moved to abut against each other to play a limiting role, thereby avoiding the fiber grating sensor from falling during the installation process as much as possible.

[0022] Preferably, the limiting assembly also includes two fixed covers arranged on the outside of the mounting plate, the fixed cover is provided with a plug-in groove on the side close to the mounting plate, and the plug-in groove and the ends of the limiting plate away from each other are plug-fitted; the limiting plate is provided with a sliding groove along its own sliding direction at one end close to the fixed cover, a support rod is installed at the bottom of the plug-in groove corresponding to the sliding groove, and the support rod is slidably connected in the sliding groove.

[0023] By adopting the above technical solution, the fixing cover and the support rod can prevent the limiting plate from falling during the movement.

[0024] Preferably, a second elastic member is sleeved on the outer side of the support rod, and one end of the second elastic member is fixedly connected to the bottom of the plug-in slot, and the other end of the second elastic member is fixedly connected to the ends of the limit plate that are away from each other.

[0025] By adopting the above technical solution, under normal circumstances, the second elastic member is in a normal state, and at this time, the ends of the two limit plates that are close to each other are in contact. During the process of disassembling or installing the fiber grating sensor, the fiber grating sensor will be pulled, so that the two limit plates are forced to move into the fixed cover, and the second elastic member is forced to be in a contracted state. When the fiber grating sensor is disassembled or installed, the two limit plates can return to the initial position under the action of the second elastic member restoring the elastic deformation.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By adjusting the distance between the first fixing plate and the second fixing plate, the length of the telescopic mounting bracket can be conveniently adjusted according to the model of the fiber grating sensor body; and by rotating the threaded rod clockwise or counterclockwise, the distance between the two clamping plates can be adjusted to clamp fiber grating sensors of different models, thus greatly improving the applicability of the present application;

[0028] 2. By providing the first elastic member, it is convenient for the pin to be inserted into the corresponding first limiting groove and the second limiting groove under the elastic force of the first elastic member itself after the length of the telescopic mounting bracket is adjusted, improving the convenience of use;

[0029] 3. The elastic force of the second elastic member pushes the limiting plates to merge, thus facilitating the auxiliary support of the fiber grating sensor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the overall structure of another perspective of an embodiment of the present application;

[0032] Figure 3 is an exploded structure diagram of an embodiment of the present application;

[0033] Figure 4 is Figure 3 an enlarged view of part A in

[0034] Figure 5 is a schematic cross-sectional structure diagram of the present application mainly showing the fixed cover and the limiting plate in an embodiment of the present application.

[0035] Reference numerals: 100, fiber grating sensor; 1, telescopic mounting bracket; 11, frame; 111, through hole; 112, jack; 12, first fixing plate; 121, first limiting groove; 13, second fixing plate; 131, second limiting groove; 14, connecting plate; 15, pin; 16, first elastic member; 17, limiting ring; 18, limiting block; 2, clamping assembly; 21, mounting plate; 211, thread groove; 212, slot; 22, clamping plate; 23, threaded rod; 24, knob; 3, limiting assembly; 31, limiting plate; 311, sliding groove; 32, fixed cover; 321, plugging groove; 33, support rod; 34, second elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following will Figures 1-5 further describe the present application in detail with reference to the attached

[0037] An embodiment of the present application discloses a disassembly and assembly mechanism for a fiber Bragg grating sensor.

[0038] Referring to Figure 1 , a disassembly and assembly mechanism for a fiber Bragg grating sensor includes a telescopic mounting frame 1 and a clamping assembly 2. There are two clamping assemblies 2, and the two clamping assemblies 2 are respectively arranged at both ends of the telescopic mounting frame 1. The clamping assembly 2 is used to clamp the end of the fiber Bragg grating sensor 100. When it is necessary to install fiber Bragg grating sensors 100 with different specifications, the telescopic mounting frame 1 can be adjusted to an appropriate length so that both ends of the fiber Bragg grating sensor 100 can be placed between the clamping assemblies 2, and then the clamping assembly 2 is adjusted to achieve stable clamping of the fiber Bragg grating sensor 100.

[0039] Refer to Figure 2 , the telescopic mounting frame 1 includes a frame 11, and a first fixing plate 12 and a second fixing plate 13 that are slidably connected to the frame 11. The frame 11 is integrally in the shape of a rectangular parallelepiped frame plate, and a through hole 111 is opened in the frame 11 along its own length direction. Both the first fixing plate 12 and the first fixing plate 12 are in the shape of an L-shaped plate. One ends of the first fixing plate 12 and the second fixing plate 13 are respectively slidably connected to opposite sides inside the through hole 111, and the length direction of this end is parallel to the length direction of the frame 11. The other ends of the first fixing plate 12 and the second fixing plate 13 are vertically arranged away from the frame 11, and a connecting plate 14 for connecting the clamping assembly 2 is fixedly installed. By adjusting the distance between the first fixing plate 12 and the second fixing plate 13, fiber Bragg grating sensors 100 with different length dimensions can be adapted.

[0040] The telescopic mounting frame 1 further includes two pins 15, and the pins 15 are integrally in the shape of a cylinder. Through holes 112 are symmetrically opened at both ends of the side surface of the frame 11 along its length direction, and the pins 15 are in plug-in fit with the through holes 112. A plurality of first limiting grooves 121 are equidistantly opened at one end of the first fixing plate 12 close to the second fixing plate 13 along its own length direction, and a plurality of second limiting grooves 131 are equidistantly opened at one end of the second fixing plate 13 close to the first fixing plate 12 along its own length direction, and both the first limiting grooves 121 and the second limiting grooves 131 are in plug-in fit with the pins 15. After the distance between the first fixing plate 12 and the second fixing plate 13 is adjusted, the two pins 15 pass through the through hole 111 from the outside of the frame 11 and are respectively plugged into the corresponding first limiting grooves 121 and second limiting grooves 131, so that the length of the telescopic mounting frame 1 can be locked.

[0041] Preferably, limiting blocks 18 are arranged on the opposite two length direction surfaces of the opposite ends of the first fixing plate 12 and the second fixing plate 13 close to each other. The limiting blocks 18 can be used to maximally prevent the first fixing plate 12 and the second fixing plate 13 from falling off the frame 11.

[0042] Reference Figure 2 and Figure 3 As shown in Figure 2 and Figure 3 , a first elastic member 16 is sleeved outside the latch 15, and the first elastic member 16 is located outside the frame 11. A limiting ring 17 is further provided at the end of the latch 15 away from the frame 11. One end of the first elastic member 16 is fixedly connected to the limiting ring 17, and the other end of the first elastic member 16 is fixedly connected to the frame 11. When the length of the telescopic mounting bracket 1 does not need to be adjusted, the first elastic member 16 is in a normal state, and the latch 15 is inserted into the first limiting groove 121 and the second limiting groove 131. When the length of the telescopic mounting bracket 1 needs to be adjusted, the latch 15 is pulled to withdraw the latch 15 from the first limiting groove 121 and / or the second limiting groove 131. At this time, the first elastic member 16 is in a stretched state; then the positions of the first fixing plate 12 and / or the second fixing plate 13 are adjusted, and after adjustment, the latch 15 is inserted into the corresponding first limiting groove 121 and / or the second limiting groove 131. The latch 15 can be automatically inserted into the first limiting groove 121 and / or the second limiting groove 131 under the elastic force of the first elastic member 16.

[0043] Reference Figure 3 and Figure 4 As shown in Figure 3 and Figure 4 , the clamping assembly 2 includes a mounting plate 21 fixedly connected to the connecting plate 14, and two oppositely arranged clamping plates 22 movably arranged on the mounting plate 21. The two clamping plates 22 are both in the shape of an arc plate as a whole, and the fiber Bragg grating sensor 100 is clamped between the two clamping plates 22. The connecting plate 14 is in the shape of a rectangular plate as a whole, and the length direction of the connecting plate 14 is perpendicular to the telescopic direction of the telescopic mounting bracket 1. There are two mounting plates 21, and the mounting plates 21 are in the shape of a rectangular plate as a whole. The two mounting plates 21 are respectively vertically arranged at both ends of the connecting plate 14, and the two mounting plates 21 are located on the side of the connecting plate 14 away from the frame 11. Threaded grooves 211 are opened at the centers of the mounting plates 21, threaded rods 23 are inserted into the interiors of the threaded grooves 211, and the threaded rods 23 are in threaded cooperation with the threaded grooves 211. One end of the threaded rod 23 is rotatably connected to the outside of the clamping plate 22 away from the fiber Bragg grating sensor 100 through a bearing, and the other end of the threaded rod 23 is connected with a knob 24. By rotating the knob 24, the threaded rod 23 can be rotated, so that the two clamping plates 22 approach or move away from each other, and thus fiber Bragg grating sensors 100 of different sizes can be adapted.

[0044] Reference Figure 4 and Figure 5, the embodiment of the present application further includes a limiting component 3. The limiting component 3 includes two oppositely arranged limiting plates 31. The limiting plates 31 are in the shape of a rectangular plate as a whole, and the length direction of the limiting plates 31 is parallel to the length direction of the connecting plate 14. One end of the mounting plate 21 away from the connecting plate 14 is provided with a slot 212, and the mutually remote ends of the two limiting plates 31 are slidably connected in the slot 212. The limiting component 3 further includes two fixing covers 32 arranged outside the mounting plate 21. One side of the fixing cover 32 close to the mounting plate 21 is provided with a plug-in slot 321, and the plug-in slot 321 is in plug-in fit with the mutually remote ends of the limiting plates 31, and the mutually close ends of the limiting plates 31 are butted against each other. One end of the limiting plate 31 close to the fixing cover 32 is provided with two sliding slots 311 along its own length direction. The two sliding slots 311 are respectively started from both sides of the length direction of the limiting plate 31. Two support rods 33 are vertically arranged at the bottom of the plug-in slot 321 corresponding to the sliding slots 311. The support rods 33 are in the shape of a cylinder as a whole, and the length direction of the support rods 33 is parallel to the length direction of the sliding slots 311, and the end of the support rod 33 away from the bottom of the plug-in slot 321 is slidably connected in the sliding slot 311. A second elastic member 34 is also sleeved outside the support rod 33, and one end of the second elastic member 34 is fixedly connected to the bottom of the plug-in slot 321, and the other end of the second elastic member 34 is fixedly connected to the mutually remote ends of the limiting plates 31.

[0045] Under normal circumstances, the second elastic member 34 is in a normal state, and at this time, the mutually close ends of the two limiting plates 31 are in contact with each other. During the process of disassembling or installing the fiber Bragg grating sensor 100, the fiber Bragg grating sensor 100 will be pulled, so that the two limiting plates 31 are forced to move into the fixing cover 32. At this time, the second elastic member 34 is in a contracted state under the force. When the disassembly or installation of the fiber Bragg grating sensor 100 is completed, the two limiting plates 31 can return to the initial position under the action of the second elastic member 34 recovering its elastic deformation, so as to facilitate the limiting effect on the fiber Bragg grating sensor 100.

[0046] Preferably, the two lengthwise surfaces of the mutually close ends of the limiting plates 31 are both inclined guide surfaces, so that the fiber Bragg grating sensor 100 can more easily push the two limiting plates 31.

[0047] The implementation principle of the disassembly and installation mechanism of a fiber Bragg grating sensor in the embodiment of the present application is as follows: When it is necessary to disassemble the fiber Bragg grating sensor 100, the relevant technicians rotate the knob 24 to rotate the threaded rod 23, and the threaded rod 23 drives the clamping plate 22 away from the fiber Bragg grating sensor 100. Then, the fiber Bragg grating sensor 100 is pulled downward, so that the fiber Bragg grating sensor 100 abuts against the surface of the limiting plate 31. The limiting plate 31 is forced to move into the interior of the fixing cover 32. At this time, the rapid disassembly of the fiber Bragg grating sensor 100 can be realized.

[0048] When it is necessary to install the fiber Bragg grating sensor 100, adjust the distance between the first fixing plate 12 and the second fixing plate 13 according to the model length of the fiber Bragg grating sensor 100. Then, bring the fiber Bragg grating sensor 100 close to the limiting plate 31, and push the fiber Bragg grating sensor 100 to contact the surface of the limiting plate 31, so that the two limiting plates 31 are forced to move to both sides, enabling the fiber Bragg grating sensor 100 to enter between the clamping plates 22. At this time, the external force on the limiting plate 31 is removed and it resets under the action of the second elastic member 34. Then, rotate the knob 24 to rotate the threaded rod 23, push the clamping plates 22 to approach each other and clamp the fiber Bragg grating sensor 100, realizing the rapid installation work, and thus being able to disassemble and assemble fiber Bragg grating sensors 100 of different models.

[0049] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A disassembly and assembly mechanism for a fiber Bragg grating sensor, characterized in that: It includes a telescopic mounting bracket (1) and a clamping assembly (2). The clamping assembly (2) is arranged at the end of the telescopic mounting bracket (1). The clamping assembly (2) includes two clamping plates (22) movably arranged on the telescopic mounting bracket (1), and the end of the fiber Bragg grating sensor (100) to be clamped is clamped between the two clamping plates (22).

2. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 1, characterized in that: The telescopic mounting bracket (1) includes a frame (11), a first fixing plate (12) and a second fixing plate (13). One ends of the first fixing plate (12) and the second fixing plate (13) are respectively slidably connected to opposite sides inside the frame (11), and the other ends of the first fixing plate (12) and the second fixing plate (13) are used for mounting the clamping assembly (2).

3. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 2, characterized in that: The telescopic mounting bracket (1) further includes a plug pin (15). Jacks (112) inserted and matched with the plug pin (15) are respectively arranged at the ends of the frame (11) close to the first fixing plate (12) and the second fixing plate (13). A plurality of first limiting grooves (121) are arranged at one end of the first fixing plate (12) close to the second fixing plate (13) along its sliding direction, and a plurality of second limiting grooves (131) are arranged at one end of the second fixing plate (13) close to the first fixing plate (12) along its sliding direction. The first limiting grooves (121) and the second limiting grooves (131) are both inserted and matched with the plug pin (15).

4. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 3, characterized in that: A first elastic member (16) is sleeved outside the plug pin (15), and the first elastic member is located outside the frame (11). A limiting ring (17) is further arranged at the end of the plug pin (15) far from the frame (11). One end of the first elastic member (16) is fixedly connected to the limiting ring (17), and the other end of the first elastic member (16) is fixedly connected to the frame (11).

5. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 2, characterized in that: Limiting blocks (18) are arranged at the ends of the first fixing plate (12) and the second fixing plate (13) close to each other, and the limiting blocks (18) are located inside the frame (11).

6. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 1, characterized in that: The clamping assembly (2) further includes a mounting plate (21) fixedly connected to the telescopic mounting bracket (1). The clamping plates (22) are movably arranged on the mounting plate (21). A threaded groove (211) is arranged on the mounting plate (21) close to the clamping plates (22). A threaded rod (23) is inserted into the threaded groove (211), and the threaded rod (23) is in threaded cooperation with the threaded groove (211). One end of the threaded rod (23) is rotatably connected to the side of the clamping plate (22) far from the fiber Bragg grating sensor (100), and the other end of the threaded rod (23) is located outside the mounting plate (21) far from the fiber Bragg grating sensor (100).

7. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 6, characterized in that: A knob (24) is fixedly connected to the end of the threaded rod (23) far from the clamping plate (22).

8. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 6, characterized in that: It further includes a limiting component (3). The limiting component (3) includes two limiting plates (31) movably arranged on the mounting plate (21). The limiting plates (31) are arranged on opposite sides of the mounting plate (21), and the limiting plates (31) are arranged on the outer side of the clamping component (2) away from the telescopic mounting frame (1). A slot (212) is formed in the mounting plate (21). The mutually remote ends of the limiting plates (31) are slidably connected in the corresponding slots (212), and the mutually adjacent ends of the limiting plates (31) are butted against each other.

9. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 8, characterized in that: The limiting component (3) further includes two fixing covers (32) arranged on the outer side of the mounting plate (21). A plugging slot (321) is formed on the side of the fixing cover (32) close to the mounting plate (21), and the plugging slot (321) is in plugging fit with the mutually remote ends of the limiting plates (31). A sliding slot (311) is formed in the end of the limiting plate (31) close to the fixing cover (32) along its sliding direction. A support rod (33) is installed at the bottom of the plugging slot (321) corresponding to the sliding slot (311), and the support rod (33) is slidably connected in the sliding slot (311).

10. The disassembly and assembly mechanism of an optical fiber grating sensor according to claim 9, characterized in that: A second elastic member (34) is further sleeved on the outer side of the support rod (33). One end of the second elastic member (34) is fixedly connected to the bottom of the plugging slot (321), and the other end of the second elastic member (34) is fixedly connected to the mutually remote ends of the limiting plates (31).

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