Deformation monitoring device for small-radius steel box girder bridge pushing construction

Abstract

The application relates to the field of bridge construction technology, in particular to a small-radius steel box girder bridge incremental launching construction deformation monitoring device, which comprises a box body, a placing hole for fixing a camera lens is arranged on the box body, a replaceable shielding belt is arranged on the placing hole, a hollow area matched with the placing hole is arranged on the shielding belt, an upper groove and a lower groove are arranged on the box body, the upper groove and the lower groove are symmetrically arranged about the placing hole, an upper box body is arranged in the upper groove, a lower box body is arranged in the lower groove, a winding disc for winding and storing the shielding belt is arranged in the upper box body, a storage disc for winding and storing the shielding belt is arranged in the lower box body, a placing disc is further rotationally connected in the lower box, a stabilizing belt connected with the storage disc is wound on the placing disc, the stabilizing belt comprises a bottom belt, and a filling pad matched with the hollow area is arranged on the bottom belt. The application can prolong the service life of the monitoring device in the small-radius steel box girder bridge incremental launching construction.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a deformation monitoring device for the jacking construction of a small-radius steel box girder bridge. Background Technology

[0002] During the incremental launching construction of small-radius steel box girder bridges, real-time monitoring of bridge deformation is necessary to ensure construction safety and bridge construction quality. Currently, video equipment is commonly used to collect and monitor bridge deformation data. However, in the actual construction environment, when not in use, the lenses of these cameras are easily contaminated and corroded by dust, gravel, rainwater, and other debris generated during construction, affecting the accuracy and precision of subsequent monitoring, and may even damage the lenses, increasing equipment maintenance costs.

[0003] Meanwhile, most existing structures used to cover lenses are relatively simple. During storage, the structure may have hollow designs, which can lead to uneven stress and cause the structure to tilt. This affects normal storage and future use, reduces the reliability and lifespan of the device, and causes inconvenience to monitoring work. Utility Model Content

[0004] In order to improve the service life of monitoring devices during the jacking construction of small-radius steel box girder bridges, this application provides a deformation monitoring device for the jacking construction of small-radius steel box girder bridges.

[0005] The deformation monitoring device for the incremental launching construction of small-radius steel box girder bridge provided in this application adopts the following technical solution: It includes a box body with a mounting hole for fixing a camera lens. A replaceable shielding strip is provided on the mounting hole. The shielding strip has a hollowed-out area that cooperates with the mounting hole. The box body has an upper groove and a lower groove, which are symmetrically arranged about the mounting hole. An upper box body is provided in the upper groove, and a lower box body is provided in the lower groove. The shielding strip extends from the upper box body to the lower box body. A winding reel for winding and storing the shielding strip is provided in the upper box body, and a storage tray for winding and storing the shielding strip is provided in the lower box body. A placement tray is rotatably connected to the lower box body. A stabilizing strip connected to the storage tray is wound on the placement tray. The stabilizing strip includes a bottom strip, and a filling pad that cooperates with the hollowed-out area is provided on the bottom strip. This forms a structure where, when the stabilizing strip is wound around the winding reel after use, the filling pad on the stabilizing strip fills the hollowed-out area.

[0006] Optionally, the shielding strip includes a shielding area and a hollow area, which are arranged sequentially, and the hollow area is provided with a hollow groove of the same size as the placement hole.

[0007] Optionally, the take-up reel is provided with an upper shaft that is rotatably connected to the upper box body, and a torsion spring is provided at the end of the upper shaft; the storage tray is provided with a lower shaft that is rotatably connected to the lower box body; and the placement tray is provided with a rotating shaft that is rotatably connected to the lower box body, and a torsion spring is provided at the end of the rotating shaft.

[0008] Optionally, the upper and lower boxes are provided with openings for the shielding strip to pass through, and both the upper and lower boxes are provided with rotating rollers for changing the direction of the shielding strip. The lower box is provided with a partition, and the storage tray and the placement tray are symmetrically arranged about the partition.

[0009] Optionally, a crossbar is rotatably connected inside the lower box. The crossbar is connected to a lower shaft bevel gear. A handle for rotating the crossbar is provided at one end of the crossbar located outside the lower box. A positioning rod is provided on the handle. A positioning groove is provided on the lower box to cooperate with the positioning rod.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. A replaceable shielding strip is provided, which includes a shielding area and a cutout area. Under normal circumstances, the shielding area is used to shield the placement hole, which can effectively prevent dust, debris and other objects from contaminating the lens of the camera equipment. When the monitoring device is in use, the cutout area is moved to the placement hole, and the cutout groove matches the placement hole to ensure that the camera equipment can perform monitoring work normally and improve the accuracy of monitoring.

[0012] 2. The stabilizing belt is designed with padding pads on its bottom to fill the hollow areas when the stabilizing belt is wound around the take-up reel after use. This prevents the shielding belt from tilting during storage due to uneven force distribution during the rotation of the reel caused by the presence of hollow grooves in the hollow areas.

[0013] 3. The torsion spring at the end of the upper shaft inside the winding reel and the torsion spring at the end of the rotating shaft inside the reel can provide rebound force during the winding and unwinding of the shielding belt and the stabilizing belt, so that the shielding belt and the stabilizing belt are always kept taut, which facilitates their winding and unwinding.

[0014] 4. The openings on the upper and lower boxes facilitate the passage of the shielding strip. The rotating roller inside the box can reverse the direction of the shielding strip. The partition inside the lower box separates the storage tray and the placement tray.

[0015] 5. The cooperation of the crossbar, handle, positioning rod and positioning groove on the lower box body can fix its position after the shielding strip is replaced, preventing the shielding strip from shifting during use. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the deformation monitoring device for the incremental launching construction of the small-radius steel box girder bridge in this application;

[0017] Figure 2This is an enlarged view of section A of the cross-sectional view of the deformation monitoring device for the jacking construction of the small-radius steel box girder bridge in this application;

[0018] Figure 3 This is the front view of the deformation monitoring device for the incremental launching construction of the small-radius steel box girder bridge in this application;

[0019] Figure 4 This is a front view of the shielding and stabilizing zone of the deformation monitoring device for the jacking construction of a small-radius steel box girder bridge, as described in this application.

[0020] Attached reference numerals: 1. Box body, 2. Placement hole, 3. Barrier strip, 4. Hollowed-out area, 5. Upper groove, 6. Lower groove, 7. Upper box body, 8. Lower box body, 9. Rewind reel, 10. Storage tray, 11. Placement tray, 12. Stabilizing strip, 13. Bottom strip, 14. Filling pad, 15. Barrier area, 16. Upper shaft, 17. Lower shaft, 18. Rotating shaft, 19. Opening, 20. Rotating roller, 21. Partition, 22. Crossbar, 23. Handle, 24. Positioning rod, 25. Positioning groove, 26. Hollowed-out groove. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a deformation monitoring device for the jacking construction of a small-radius steel box girder bridge. For example... Figure 1 , 2As shown in Figure 4, the device includes a housing 1. The housing 1 has a mounting hole 2 for fixing a camera lens. A replaceable shielding strip 3 is provided on the mounting hole 2. The shielding strip 3 is made of transparent material and is existing technology. The shielding strip 3 includes a shielding area 15 and a hollow area 4. Multiple shielding areas 15 and hollow areas 4 are arranged sequentially. The hollow area 4 includes a hollow groove 26 of the same size as the mounting hole 2. The housing 1 has an upper groove 5 and a lower groove 6 extending through its thickness direction, symmetrically arranged about the mounting hole 2. An upper housing 7 is fixed to the upper groove 5 with screws, and a lower housing 8 is fixed to the lower groove 6 with screws. The shielding strip 3 extends from the upper housing 7 to the lower housing 8. The upper box 7 contains a winding reel 9 for winding and storing the shielding tape 3. The winding reel 9 is prior art. An upper shaft 16, rotatably connected to the upper box 7, is engaged within the winding reel 9. Support plates are provided on two opposite inner walls of the upper box 7, and bearings with interference fit to the upper shaft 16 are fixed on the support plates. A torsion spring, also prior art, is provided at the end of the upper shaft 16. The lower box contains a storage tray 10 for winding and storing the shielding tape 3. A lower shaft 17, rotatably connected to the lower box 8, is provided within the storage tray 10. Bearings with interference fit to the lower shaft 17 are provided on two opposite inner walls of the lower box 8. A placement tray 11 is also rotatably connected within the lower box. A rotating shaft 18, rotatably connected to the lower box 8, is provided within the placement tray 11. Placement plates, L-shaped in structure, are fixed on two opposite inner walls of the lower box 8. Bearings with interference fit to the rotating shaft 18 are fixed on the placement plates, and a torsion spring is provided at the end of the rotating shaft 18. A stabilizing band 12 connected to a storage tray 10 is wound around a placement tray 11. The stabilizing band 12 includes a bottom band 13, and a filling pad 14 is provided on the bottom band 13 to cooperate with the hollow area 4. This forms a structure in which the filling pad 14 on the stabilizing band 12 fills the hollow area 4 when the stabilizing band 12 is wound around the winding tray 9 after use with the shielding band 3.

[0023] In one embodiment, according to the appendix Figure 2 and 3 As shown, the upper box 7 and the lower box 8 are provided with openings 19 for the shielding strip 3 to pass through. Both the upper box 7 and the lower box 8 are provided with rotating rollers 20 for changing the direction of the shielding strip 3, and there are multiple rotating rollers 20. A partition 21 is fixed with screws inside the lower box 8, and the storage tray 10 and the placement tray 11 are symmetrically arranged about the partition 21.

[0024] In one embodiment, according to the appendix Figure 2 As shown, a crossbar 22 is rotatably connected inside the lower housing 8. A bearing with an interference fit to the crossbar 22 is installed inside the lower housing 8. The crossbar 22 is connected to the lower shaft 17 via a bevel gear. A handle 23 for rotating the crossbar 22 is located at one end of the crossbar 22 outside the lower housing 8. A positioning rod 24 is rotatably connected to the handle 23. The positioning rod 24 has an "L"-shaped structure. Multiple positioning grooves 25 are provided on the lower housing 8 to cooperate with the positioning rod 24, and these grooves are arranged symmetrically about the crossbar 22.

[0025] The implementation principle of the deformation monitoring device for the incremental launching construction of a small-radius steel box girder bridge in this embodiment is as follows: Under normal conditions, the shielding area 15 of the shielding strip 3 is located at the placement hole 2, which shields and protects the lens of the camera equipment. At this time, the torsion springs in the winding reel 9 and the placement plate 11 are in a certain state of stored force, so that the shielding strip 3 and the stabilizing strip 12 remain taut.

[0026] When the monitoring device is needed, turn handle 23. This drives the lower shaft 17 to rotate via the crossbar 22 and bevel gear, causing the storage tray 10 to rotate and store the shielding strip 3. During the movement of the shielding strip 3, the rotating roller 20 reverses its direction, ensuring smooth movement. When the perforated area 4 moves to the placement hole 2, stop turning handle 23 and insert the positioning rod 24 into the positioning groove 25 to fix the position of the shielding strip 3. At this time, the camera device performs monitoring through the perforated groove 26.

[0027] After the monitoring is completed, pull out the positioning rod 24 and turn the handle 23 in the opposite direction. Under the action of the torsion spring inside the take-up reel 9, the shielding tape 3 is wound back onto the take-up reel 9. At the same time, the shielding area 15 moves again to the placement hole 2 to shield the lens. During the rewinding process of the shielding tape 3, the stabilizing belt 12 follows the shielding tape 3 and wraps around the take-up reel 9. The filling pad 14 on the stabilizing belt 12 fills the hollow area 4 of the shielding tape 3 to prevent the shielding tape 3 from tilting due to uneven force during the winding process.

[0028] When the masking strip 3 needs to be replaced, simply rotate the handle 23 to set the angle and completely store the old masking strip 3 onto the storage tray 10.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A deformation monitoring device for the jacking construction of a small-radius steel box girder bridge, comprising a box body (1), wherein the box body (1) is provided with a mounting hole (2) for fixing the lens of a camera device, characterized in that: A replaceable shielding strip (3) is provided on the placement hole (2). The shielding strip (3) has a hollow area (4) that works in conjunction with the placement hole (2). The box body (1) is provided with an upper groove (5) and a lower groove (6). The upper groove (5) and the lower groove (6) are symmetrically arranged about the placement hole (2). An upper box body (7) is provided in the upper groove (5), and a lower box body (8) is provided in the lower groove (6). The shielding strip (3) extends from the upper box body (7) to the lower box body (8). A winding reel for winding and storing the shielding strip (3) is provided in the upper box body (7). 9) The lower box is provided with a storage tray (10) for winding and storing the shielding tape (3). The lower box is also rotatably connected with a placement tray (11). The placement tray (11) is wound with a stabilizing tape (12) connected to the storage tray (10). The stabilizing tape (12) includes a bottom tape (13). The bottom tape (13) is provided with a filling pad (14) for use with the hollow area (4). When the stabilizing tape (12) winds around the winding tray (9) after the shielding tape (3) is used, the filling pad (14) on the stabilizing tape (12) fills the hollow area (4).

2. The deformation monitoring device for the incremental launching construction of a small-radius steel box girder bridge according to claim 1, characterized in that: The shielding strip (3) includes a shielding area (15) and a hollow area (4), which are arranged in sequence. The hollow area (4) has a hollow groove (26) with the same size as the placement hole (2).

3. The deformation monitoring device for the incremental launching construction of a small-radius steel box girder bridge according to claim 1, characterized in that: The winding reel (9) is provided with an upper shaft (16) that is rotatably connected to the upper box body (7), and a torsion spring is provided at the end of the upper shaft (16). The storage tray (10) is provided with a lower shaft (17) that is rotatably connected to the lower box body (8). The placement tray (11) is provided with a rotating shaft (18) that is rotatably connected to the lower box body (8), and a torsion spring is provided at the end of the rotating shaft (18).

4. The deformation monitoring device for the incremental launching construction of a small-radius steel box girder bridge according to claim 1, characterized in that: The upper box (7) and the lower box (8) are provided with openings (19) for the shielding strip (3) to pass through. The upper box (7) and the lower box (8) are each provided with a rotating roller (20) for the shielding strip (3) to change direction. The lower box (8) is provided with a partition (21). The storage tray (10) and the placement tray (11) are symmetrically arranged about the partition (21).

5. The deformation monitoring device for the incremental launching construction of a small-radius steel box girder bridge according to claim 1, characterized in that: A crossbar (22) is rotatably connected inside the lower box (8). The crossbar (22) is connected to the lower shaft (17) via a bevel gear. A handle (23) for rotating the crossbar (22) is provided at one end of the crossbar (22) located outside the lower box (8). A positioning rod (24) is provided on the handle (23). A positioning groove (25) is provided on the lower box (8) to cooperate with the positioning rod (24).

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