Bridge monitoring optical fiber sensor with protection function

Abstract

The utility model discloses a bridge monitoring optical fiber sensor with a protection function, and relates to the technical field of bridge detection. The bridge protection device comprises a bridge body and two hanging frames, a sensor body is arranged between the two hanging frames, locking grooves are formed in the side faces of the two hanging frames, a main protection piece and an auxiliary protection piece are arranged at the bottom of the bridge body, a fixing plate is arranged at the bottom of the auxiliary protection piece, a rotating rod is rotationally matched with the fixing plate, and a bottom plate is arranged on the rotating rod. A cleaning assembly is arranged on the bottom plate, a drainage hole is formed in the top of the bottom plate, a limiting groove is formed in the side face of the bottom plate, and a limiting assembly is arranged in the main protection piece and matched with the limiting groove. According to the utility model, the main locking structure and the auxiliary locking structure are arranged, and the auxiliary locking structure is in transmission with the bottom plate, so that the limiting of the hanging rack is preliminarily relieved while the bottom plate is opened, the hanging rack is convenient to mount and dismount, and the hanging rack is more convenient and quicker to maintain and mount.

Description

Technical Field

[0001] The utility model belongs to the field of bridge detection, and in particular relates to a bridge monitoring optical fiber sensor with a protective function. Background Art

[0002] A fiber optic sensor is a sensor that converts the state of a measured object into a measurable optical signal. The working principle of a fiber optic sensor is to send the incident light beam from a light source into a modulator via an optical fiber. The interaction with the external measured parameters in the modulator causes the optical properties of the light, such as light intensity, wavelength, frequency, phase, polarization state, to change, becoming a modulated optical signal. The light signal is then sent to an optoelectronic device via an optical fiber and the measured parameters are obtained after passing through a demodulator. As a nondestructive testing technology, fiber optic sensing technology effectively avoids the defects of traditional bridge detection technology. Currently, fiber optic sensors are needed to detect bridge stress and displacement.

[0003] The Chinese patent with the publication number CN220104165U discloses a bridge detection device, including an optical cable, an optical fiber sensor and an installation mechanism. The optical fiber sensor is provided with a plurality of optical fiber sensors and connected in series to the optical cable. The installation mechanism includes a protective member fixed to the bridge body, and the protective member has a wire groove for the optical cable to be routed inside. The inner wall of the wire groove is connected to a hanger, and the optical fiber sensor is clipped into the hanger. The optical cable and the optical fiber sensor are fixed to the bridge through the hanger and the protective member. Multiple optical fiber sensors can be directly connected in series to an optical cable, and installation and maintenance are convenient and fast. The optical fiber sensor has a large transmission distance and is also resistant to radiation, strong magnetic interference, strong electricity, corrosion and moisture, and can detect bridge damage in a timely and accurate manner.

[0004] A bridge detection device in the above-mentioned comparative document fixes the bracket to the protective frame by bolts, which is not convenient for disassembly and assembly, making it inconvenient to repair the optical fiber sensor and cleaning the bottom plate.

[0005] In view of this, the present utility model is proposed. Summary of the invention

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a bridge monitoring optical fiber sensor with a protective function.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A bridge monitoring optical fiber sensor with a protective function comprises a bridge body and two hangers, a sensor body is arranged between the two hangers, locking grooves are provided on the sides of the two hangers, a main protective member and a secondary protective member are installed at the bottom of the bridge body, a fixing plate is installed at the bottom of the secondary protective member, a rotating rod is rotatably matched on the fixing plate, a bottom plate is installed on the rotating rod, a cleaning component is arranged on the bottom plate, a drainage hole is provided on the top of the bottom plate, a limiting groove is provided on the side of the bottom plate, a limiting component is arranged in the main protective member, and the limiting component cooperates with the limiting groove;

[0009] A main locking structure is arranged in the main protective member, a secondary locking structure is arranged in the secondary protective member, the secondary locking structure cooperates with the rotating rod, and the main locking structure and the secondary locking structure cooperate with the locking groove.

[0010] Optionally, the limit assembly includes an installation groove opened on the side of the main protective part, a limit block slidingly fitted in the installation groove, a limit spring installed between the limit block and the installation groove, a mounting hole opened on the side of the installation groove, a pull rod installed on one side of the limit block, the pull rod is slidably connected to the mounting hole, and the limit block cooperates with the limit groove; the limit block is provided with an inclined surface.

[0011] Optionally, the cleaning component includes a fixed block mounted on the bottom plate, a sliding rod is mounted on the fixed block, a scraper is slidably connected to the sliding rod, and the scraper cooperates with the bottom plate; an inclined surface is arranged on the top of the bottom plate.

[0012] Optionally, the main locking structure includes a first cavity arranged in the main protective member, a sliding block is slidably engaged with the top of the inner cavity of the first cavity, a main locking member is installed on the side of the sliding block, the main locking member cooperates with the locking groove, a first gear is rotatably engaged in the first cavity, an extrusion block is slidably engaged with the bottom of the inner cavity of the first cavity, a return spring is installed between the extrusion block and the first cavity, teeth are arranged on the extrusion block and the sliding block, the teeth are meshed with the first gear; the extrusion block cooperates with the two brackets.

[0013] Optionally, the secondary locking structure includes a second cavity arranged in the secondary protective member, sliding grooves are opened on both sides of the inner wall of the second cavity, a slider is slidably fitted in the sliding groove, a secondary locking member is installed on the side of the slider, the secondary locking member cooperates with the locking groove, a main sprocket is installed on the rotating rod, a second gear is rotatably fitted in the second cavity, a rotating rod is rotatably fitted in the second cavity, a third gear and a secondary sprocket are installed on the rotating rod, a chain is sleeved between the main sprocket and the secondary sprocket, the second gear and the third gear are meshed with each other, a rack is installed at the bottom of the slider, and the rack is meshed with the second gear.

[0014] Wherein, the main locking member and the auxiliary locking member both include a rod and an arc-shaped elastic member installed at one end of the rod.

[0015] Optionally, an optical cable is provided on the sensor body, and wire grooves are provided on the two hangers, and the wire grooves cooperate with the optical cable; the wire grooves are used for routing the optical cable.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0017] 1. The utility model provides a main locking structure and a secondary locking structure, which are transmitted through the secondary locking structure and the bottom plate, so that it is convenient to initially release the limit of the hanger when the bottom plate is opened, thereby facilitating the installation and removal of the hanger, which is conducive to more convenient and quick maintenance and installation of the hanger.

[0018] The utility model provides a cleaning component, and by opening the bottom plate, the cleaning component cleans the bottom plate under the action of gravity and the inclined surface of the bottom plate, thereby facilitating the cleaning of the bottom plate.

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

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

[0022] Figure 2 This is a schematic diagram of the structure of a limit assembly according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the locking structure of an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the chain structure of an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a rack according to an embodiment of the utility model;

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Bridge body; 2. Main protective part; 3. Secondary protective part; 4. Fixed plate; 5. Rotating rod; 6. Bottom plate; 7. Fixed block; 8. Sliding rod; 9. Scraper; 10. Limiting groove; 11. Mounting groove; 12. Limiting block; 13. Limiting spring; 14. Pull rod; 15. First cavity; 16. Sliding block; 17. Main locking part; 18. First gear; 19. Extrusion block; 20. Reset spring; 21. Secondary cavity; 22. Sliding groove; 23. Sliding block; 24. Secondary locking part; 25. Secondary gear; 26. Main sprocket; 27. Rotating rod; 28. Secondary sprocket; 29. ​​Third gear; 30. Chain; 31. Hanger; 32. Locking groove; 33. Wire trough; 34. Optical cable; 35. Sensor body; 36. Drain hole.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] The utility model will now be described in further detail with reference to the accompanying drawings.

[0030] See also Figure 1-5 As shown, in this embodiment, a bridge monitoring optical fiber sensor with a protective function is provided, including a bridge body 1 and two hangers 31, a sensor body 35 is arranged between the two hangers 31, locking grooves 32 are provided on the sides of the two hangers 31, a main protective member 2 and a secondary protective member 3 are installed at the bottom of the bridge body 1, a fixing plate 4 is installed at the bottom of the secondary protective member 3, a rotating rod 5 is rotatably matched on the fixing plate 4, a bottom plate 6 is installed on the rotating rod 5, a cleaning component is arranged on the bottom plate 6, a drainage hole 36 is arranged on the top of the bottom plate 6, a limiting groove 10 is arranged on the side of the bottom plate 6, a limiting component is arranged in the main protective member 2, and the limiting component cooperates with the limiting groove 10;

[0031] A main locking structure is provided in the main protective member 2 , and a secondary locking structure is provided in the secondary protective member 3 . The secondary locking structure cooperates with the rotating rod 5 , and the main locking structure and the secondary locking structure cooperate with the locking groove 32 .

[0032] The application of one aspect of this embodiment is as follows: during installation, the sensor body 35 is first placed between the two hangers 31, and then the two hangers 31 are installed on the main locking structure and the auxiliary locking structure. By closing the bottom plate 6, the bottom plate 6 is limited and fixed by the limit assembly. When the bottom plate 6 is closed, the rotation of the bottom plate 6 drives the rotation rod 5 to rotate, and the rotation of the rotation rod 5 drives the auxiliary locking structure to lock the two hangers 31. While locking, the auxiliary locking structure drives the two hangers 31 to squeeze toward the main locking structure, so that the main locking structure and the auxiliary locking structure lock the two hangers 31. The hanger 31 is locked. When disassembling, the limit of the bottom plate 6 is released by the limit assembly, and then the bottom plate 6 is rotated to open the bottom plate 6. When the bottom plate 6 rotates, the secondary locking structure will gradually release the squeezing of the two hangers 31, so that the two hangers 31 can move between the main locking structure and the secondary locking structure, and then the two hangers 31 are pulled downward for removal, so that installation and maintenance are more convenient and faster. When the bottom plate 6 rotates, the cleaning assembly cleans the bottom plate 6 under the action of gravity, thereby facilitating the cleaning of the bottom plate 6.

[0033] See also Figure 1-2 As shown, the limit assembly of this embodiment includes a mounting groove 11 opened on the side of the main protective part 2, a limit block 12 slidingly fitted in the mounting groove 11, a limit spring 13 is installed between the limit block 12 and the mounting groove 11, a mounting hole is opened on the side of the mounting groove 11, a pull rod 14 is installed on one side of the limit block 12, the pull rod 14 is slidably connected to the mounting hole, the limit block 12 cooperates with the limit groove 10; the limit block 12 is provided with an inclined surface.

[0034] By means of the set limit assembly, when the bottom plate 6 is closed, the bottom plate 6 is rotated, and the bottom plate 6 squeezes the inclined surface on the limit block 12, so that the limit block 12 squeezes the limit spring 13 and moves into the installation groove 11, and then when the limit groove 10 is flush with the installation groove 11, under the action of the limit spring 13, the limit block 12 is inserted into the limit groove 10 to achieve the effect of fixed limit, and when the bottom plate 6 is opened, by pulling the pull rod 14, the pull rod 14 drives the limit block 12 to move from the limit groove 10 to the installation groove 11, thereby facilitating the release of the limit on the bottom plate 6.

[0035] See also Figure 1-2 As shown, the cleaning assembly of this embodiment includes a fixed block 7 mounted on a bottom plate 6, a slide bar 8 is mounted on the fixed block 7, a scraper 9 is slidably connected to the slide bar 8, and the scraper 9 cooperates with the bottom plate 6; an inclined surface is provided on the top of the bottom plate 6.

[0036] Through the cleaning assembly, when the bottom plate 6 is opened, the bottom plate 6 rotates, and under the action of gravity, the scraper 9 slides on the slide rod 18. When the bottom plate 6 is closed, the scraper 9 slides on the slide rod 18 under the action of the inclined surface of the bottom plate 6, so that the scraper 9 cleans the bottom plate 6.

[0037] See also Figure 1-5 As shown, the main locking structure of this embodiment includes a first cavity 15 arranged in the main protective member 2, a sliding block 16 is slidably fitted at the top of the inner cavity of the first cavity 15, a main locking member 17 is installed on the side of the sliding block 16, the main locking member 17 cooperates with the locking groove 32, a first gear 18 is rotatably fitted in the first cavity 15, an extrusion block 19 is slidably fitted at the bottom of the inner cavity of the first cavity 15, a return spring 20 is installed between the extrusion block 19 and the first cavity 15, teeth are provided on the extrusion block 19 and the sliding block 16, and the teeth are meshed with the first gear 18; the extrusion block 19 cooperates with two hangers 31.

[0038] See also Figure 1-5 As shown, the secondary locking structure of this embodiment includes a second cavity 21 arranged in the secondary protective member 3, and slide grooves 22 are opened on both sides of the inner wall of the second cavity 21. A slider 23 is slidably matched in the slide groove 22, and a secondary locking member 24 is installed on the side of the slider 23. The secondary locking member 24 cooperates with the locking groove 32. A main sprocket 26 is installed on the rotating rod 5, and a second gear 25 is rotatably matched in the second cavity 21. A rotating rod 27 is rotatably matched in the second cavity 21, and a third gear 29 and a secondary sprocket 28 are installed on the rotating rod 27. A chain 30 is sleeved between the main sprocket 26 and the secondary sprocket 28, the second gear 25 and the third gear 29 are meshed with each other, and a rack is installed at the bottom of the slider 23, and the rack and the second gear 25 are meshed with each other.

[0039] The main locking member 17 and the auxiliary locking member 24 each include a rod and an arc-shaped elastic member mounted on one end of the rod.

[0040] By means of the secondary locking structure, when the two hangers 31 are installed, the two hangers 31 are hung on the arc surfaces of the main locking member 17 and the secondary locking member 24, and the bottom plate 6 is closed. The bottom plate 6 rotates to drive the rotating rod 5 to rotate, and the rotating rod 5 rotates to drive the main sprocket 26 to rotate. The main sprocket 26 rotates through the chain 30 to drive the secondary sprocket 28 to rotate. The secondary sprocket 28 rotates through the installation rod 27 to drive the third gear 29 to rotate. The third gear 29 rotates to drive the second gear 25 to rotate. The second gear 25 rotates through the rack to drive the slider 23 to move toward the hanger 31, so that the secondary locking member 24 is inserted into the locking groove 32 and squeezes the hanger 31, so that the hanger 31 squeezes the squeezing block 19, and the teeth on the squeezing block 19 drive the first gear 18 to rotate. The rotation of the first gear 18 drives the sliding block 16 to move, and the movement of the sliding block 16 drives the main The locking members 17 are all inserted into the locking grooves 32, thereby facilitating the locking and fixing of the two hangers 31. When disassembling, by opening the bottom plate 6, the bottom plate 6 rotates to drive the rod portion of the secondary locking member 24 to disengage from the locking grooves 32, and only the arc-shaped elastic member of the secondary locking member 24 supports the hanger 31. At the same time, under the action of the return spring 20, the extrusion block 19 is driven to be squeezed toward the hanger 31, so that the rod portion of the main locking member 17 is disengaged from the locking grooves 32, and only the arc-shaped elastic member of the main locking member 17 supports the hanger 31. Then the hanger 31 is pulled downward, and the locking grooves 32 of the hanger 31 respectively squeeze the corresponding arc-shaped elastic members of the secondary locking member 24 and the arc-shaped elastic members of the main locking member 17, so that the arc-shaped elastic members of the secondary locking member 24 and the arc-shaped elastic members of the main locking member 17 are deformed, thereby facilitating the removal of the hanger 31.

[0041] See also Figure 1-5 As shown, in this embodiment, an optical cable 34 is disposed on the sensor body 35 , and wire grooves 33 are provided on the two hangers 31 . The wire grooves 33 match the optical cable 34 ; the wire grooves 33 are used for routing the optical cable 34 .

[0042] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A bridge monitoring optical fiber sensor with protection function, characterized in that: include: A bridge body (1) and two hangers (31), a sensor body (35) is arranged between the two hangers (31), locking grooves (32) are provided on the sides of the two hangers (31), a main protective member (2) and a secondary protective member (3) are installed at the bottom of the bridge body (1), a fixing plate (4) is installed at the bottom of the secondary protective member (3), a rotating rod (5) is rotatably matched on the fixing plate (4), a bottom plate (6) is installed on the rotating rod (5), a cleaning component is arranged on the bottom plate (6), a drainage hole (36) is provided on the top of the bottom plate (6), a limiting groove (10) is provided on the side of the bottom plate (6), a limiting component is arranged in the main protective member (2), and the limiting component cooperates with the limiting groove (10); A main locking structure is provided in the main protection piece (2), a secondary locking structure is provided in the secondary protection piece (3), the secondary locking structure cooperates with the rotating rod (5), and the main locking structure and the secondary locking structure cooperate with the locking groove (32).

2. The optical fiber sensor for bridge monitoring with protection function according to claim 1, characterized in that: The limit assembly comprises a mounting groove (11) provided on the side of the main protective member (2), a limit block (12) slidably fitted in the mounting groove (11), a limit spring (13) arranged between the limit block (12) and the mounting groove (11), a mounting hole provided on the side of the mounting groove (11), a pull rod (14) arranged on one side of the limit block (12), the pull rod (14) being slidably connected to the mounting hole, and the limit block (12) being fitted with the limit groove (10).

3. The optical fiber sensor for bridge monitoring with protection function according to claim 1, characterized in that: The cleaning assembly comprises a fixed block (7) mounted on the bottom plate (6), a sliding rod (8) being mounted on the fixed block (7), a scraper (9) being slidably connected to the sliding rod (8), and the scraper (9) being matched with the bottom plate (6).

4. The optical fiber sensor for bridge monitoring with protection function according to claim 1, characterized in that: The main locking structure comprises a first cavity (15) arranged in the main protective member (2); a sliding block (16) is slidably engaged at the top of the inner cavity of the first cavity (15); a main locking member (17) is arranged on the side of the sliding block (16); the main locking member (17) is engaged with the locking groove (32); a first gear (18) is rotatably engaged in the first cavity (15); an extrusion block (19) is slidably engaged at the bottom of the inner cavity of the first cavity (15); a return spring (20) is arranged between the extrusion block (19) and the first cavity (15); teeth are arranged on the extrusion block (19) and the sliding block (16); the teeth are meshed with the first gear (18).

5. The optical fiber sensor for bridge monitoring with protection function according to claim 1, characterized in that: The secondary locking structure comprises a second cavity (21) arranged in the secondary protective member (3), the inner wall of the second cavity (21) is provided with a slide groove (22) on both sides, a slider (23) is slidably matched in the slide groove (22), a secondary locking member (24) is installed on the side of the slider (23), the secondary locking member (24) cooperates with the locking groove (32), a main sprocket (26) is installed on the rotating rod (5), a second gear (25) is rotatably matched in the second cavity (21), a rotating rod (27) is rotatably matched in the second cavity (21), a third gear (29) and a secondary sprocket (28) are installed on the rotating rod (27), a chain (30) is sleeved between the main sprocket (26) and the secondary sprocket (28), the second gear (25) and the third gear (29) are meshed with each other, a rack is installed at the bottom of the slider (23), and the rack is meshed with the second gear (25).

6. The optical fiber sensor for bridge monitoring with protection function according to claim 1, characterized in that: An optical cable (34) is provided on the sensor body (35), and wire grooves (33) are provided on the two hanging brackets (31), and the wire grooves (33) are matched with the optical cable (34).

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