Bridge displacement detection device

Abstract

The invention relates to the technical field of bridge displacement detection, in particular to a bridge displacement detection device which comprises a fixed base, a detection rod in contact with a bridge is arranged on the fixed base, a buffer assembly is arranged between the fixed base and the detection rod, and a displacement detection part is arranged on the fixed base. A displacement amplification part is arranged between the detection rod and the displacement detection part, a buffer switching part is arranged on the fixed base, and the bridge displacement detection device enables a worker to realize the automatic switching function of the buffer assembly through the buffer switching part according to the working condition of the buffer assembly; the device greatly reduces the workload and work intensity of workers, and guarantees the accuracy of bridge displacement detection through the replacement cooperation of the displacement detection part, the displacement amplification part and the buffer assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge displacement detection, and in particular to a bridge displacement detection device. Background Art

[0002] During bridge displacement detection, the length of the bridge displacement is detected to determine the length of its deformation. Bridge displacement monitoring can then be used to detect the condition of the bridge structure. Once a potential abnormality occurs, maintenance personnel are reminded to repair and maintain the bridge to extend the service life of the bridge.

[0003] However, in actual use, we have found that under the influence of factors such as vehicle traffic and wind, bridge displacement is often accompanied by shaking. For example, a bridge displacement detection device and detection method for bridge construction with the announcement number CN118960513B is designed. The device places the resistance block at a certain distance from the bottom of the bridge (i.e., the safe displacement length). This displacement can offset the displacement of the normal bridge shaking, thereby preventing the shaking under normal bridge displacement from being mistaken for abnormal shaking. Of course, some detection devices rely on buffer components to absorb impact. However, in actual use, the buffering capacity of the buffer component will decrease after long-term use, so the staff needs to replace it frequently, which greatly increases the workload and work intensity of the staff. At the same time, the decrease in buffering capacity will directly affect the accuracy of bridge displacement detection.

[0004] To this end, we propose a bridge displacement detection device. Summary of the Invention

[0005] A technical problem to be solved by this application is: how to design a bridge displacement detection device with automatic switching buffer components.

[0006] In order to solve the above technical problems, an embodiment of the present application provides a bridge displacement detection device, including a fixed base, a detection rod in contact with the bridge is provided on the fixed base, a buffer assembly is provided between the fixed base and the detection rod, a displacement detection component is provided on the fixed base, a displacement amplification component is provided between the detection rod and the displacement detection component, and a buffer switching component is provided on the fixed base.

[0007] In some embodiments, the displacement detection component includes a side bracket arranged on a fixed base, a detection box is arranged on the side bracket, a detection piece is arranged in the detection box, a guide limit seat is arranged on the side bracket, and a clamping rod engaged with the guide limit seat is arranged on the detection rod.

[0008] In some embodiments, the detection component includes a photoelectric emitting device and a photoelectric receiving device arranged on the inner wall of the detection box, a shift rod is slidably provided on the detection box, and a detection plate is provided at one end of the shift rod located in the detection box.

[0009] In some embodiments, the displacement amplification component includes a deflection rod rotatably set on the guide limit seat, and the deflection rod is provided with a fixed groove one and a fixed groove two. The distance between the fixed groove one and the guide limit seat is smaller than the distance between the fixed groove two and the guide limit seat. A bent rod is provided on the detection rod, and the end of the bent rod is movably set in the fixed groove one, and the detection part is connected to the fixed groove two.

[0010] In some embodiments, the buffer switching component includes a rotating member disposed on a fixed base, a plurality of fixed members are disposed on the rotating member, and double-sided support members are disposed between the rotating member and the plurality of fixed members.

[0011] In some embodiments, the rotating member includes a driving motor arranged in the middle of the fixed base, and a driving shaft connected to the output end of the driving motor is rotatably arranged in the center of the fixed base, and a mounting seat is provided on the driving shaft.

[0012] In some embodiments, the fixing member includes a connecting frame body provided on a fixed base, a lifting top plate is slidably provided on the connecting frame body, and the buffer assembly is provided between the connecting frame body and the lifting top plate.

[0013] In some embodiments, the double-sided support member includes a double-sided support guide rod arranged on the mounting seat, a sliding frame is provided on both sides of the fixing member, and both ends of the double-sided support guide rod are respectively arranged inside the sliding frame.

[0014] In some embodiments, a guide protrusion is provided on the top of the lifting top plate, and the side of the detection rod close to the lifting top plate is chamfered.

[0015] In some embodiments, the detection box is slidably arranged on a side bracket, and an electric push rod is provided on the detection box and the side bracket.

[0016] The present invention has at least the following beneficial effects: 1. It enables the staff to realize the automatic switching function of the buffer assembly through the buffer switching component according to the working conditions of the buffer assembly, which greatly reduces the workload and work intensity of the staff. In addition, the accuracy of bridge displacement detection is ensured by the coordination of the displacement detection component, the displacement amplification component and the replacement of the buffer assembly.

[0017] 2. The displacement amplification component can directly amplify the displacement of the detection rod (that is, the displacement of the bridge in the vertical direction), so that the displacement detection component can more intuitively measure the displacement change of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram of the structure of the present invention after the bridge is cut away; Figure 3 The present invention Figure 2 Schematic diagram of the local cross-section structure; Figure 4 For the present invention Figure 3 Schematic diagram of the local cross-section structure; Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of area A; Figure 6 This is a structural diagram of the fixed base and the buffer switching component of the present invention; Figure 7 This is a schematic structural diagram of the displacement detection component and the displacement amplification component of the present invention; Figure 8 This is a partial structural diagram of the buffer switching component of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of partial structural explosion.

[0019] In the figure: 1. Fixed base; 2. Detection rod; 3. Buffer assembly; 41. Side bracket; 42. Detection box; 43. Guide limit seat; 44. Card rod; 51. Photoelectric emitting device; 52. Photoelectric receiving device; 53. Shift rod; 54. Detection plate; 6. Displacement amplification component; 61. Deflection rod; 62. Fixed slot 1; 63. Fixed slot 2; 64. Bending rod; 7. Buffer switching component; 8. Rotating part; 81. Drive motor; 82. Drive shaft; 83. Mounting seat; 9. Fixing part; 91. Connecting frame; 92. Lifting top plate; 10. Double-sided support members; 101. Double-sided support guide rod; 102. Sliding frame; 11. Guide protrusion; 12. Electric push rod. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1 See also Figures 1-9 , the present invention provides a technical solution: A bridge displacement detection device includes a fixed base 1, a detection rod 2 in contact with the bridge is provided on the fixed base 1, a buffer assembly 3 is provided between the fixed base 1 and the detection rod 2, a displacement detection component is provided on the fixed base 1, a displacement amplification component 6 is provided between the detection rod 2 and the displacement detection component, and a buffer switching component 7 is provided on the fixed base 1.

[0022] The fixed base 1 consists of a lower bottom surface, an upper bottom surface and a plurality of support columns located between the upper bottom surface and the lower bottom surface. The fixed base 1 is installed between the temporary bridge pier and the bridge beam, wherein the lower bottom surface is located on the temporary bridge pier.

[0023] The buffer component 3 is a shock-absorbing spring. By squeezing the shock-absorbing spring, when the vehicle load impacts the bridge deck and causes sudden displacement, the spring absorbs the impact kinetic energy through its own elastic deformation, which can reduce the shaking within a certain range. At the same time, under small vibrations, the spring flexibly expands and contracts, isolating the interference of high-frequency vibrations on the displacement data.

[0024] The displacement detection component includes a side bracket 41 arranged on the fixed base 1, a detection box 42 is provided on the side bracket 41, a detection piece is provided in the detection box 42, a guide limit seat 43 is provided on the side bracket 41, and a clamping rod 44 engaged with the guide limit seat 43 is provided on the detection rod 2.

[0025] The inspection box 42 is provided with light-transmitting holes on multiple sides to ensure the normal inspection requirements of the internal inspection parts. At the same time, it can also prevent external impurities from entering the interior of the inspection box 42, thereby ensuring the inspection accuracy of the inspection parts. Of course, in order to ensure the inspection requirements in some special circumstances, a lighting device can be installed in the inspection box 42 to provide lighting needs.

[0026] The detection rod 2 is slidably set in the guide limit seat 43, and is provided with a notch which cooperates with the card rod 44. The notch can prevent the card rod 44 from escaping from the guide limit seat 43. In this solution, the card rod 44 is designed as a cylindrical structure, and the notch is a semicircular structure.

[0027] The detection element includes a photoelectric emitting device 51 and a photoelectric receiving device 52 arranged on the inner wall of the detection box 42. A shift rod 53 is slidably arranged on the detection box 42. A detection plate 54 is arranged at one end of the shift rod 53 located in the detection box 42.

[0028] The photoelectric emitting device 51 and the photoelectric receiving device 52 are used in conjunction with each other to form a set of stable detection components. Specifically, the transmitting end converts the electrical signal into a directional light beam such as infrared or laser, which penetrates the medium in the detection box 42 and reaches the receiving end directly; the receiving end captures the subtle fluctuations in light intensity and restores it to electrical signal changes. It is used in conjunction with the detection board 54 to replace the displacement of the bridge. By blocking the light beam by the detection board 54, the displacement of the bridge can be detected. According to the shaking requirements of the bridge, a certain distance can be set between the detection board 54 and the photoelectric emitting device 51 and the photoelectric receiving device 52.

[0029] When the bridge is displaced, the detection rod 2 is driven to move downward, and its kinetic energy is first buffered by the shock-absorbing spring - the spring absorbs the impact through elastic deformation and filters out the high-frequency vibration caused by the passage of vehicles; then, the detection rod 2 transmits the linear displacement to the shift rod 53; the detection plate 54 at the end of the shift rod 53 moves in the detection box 42, like a "light gate" cutting the light path from the photoelectric emitting device 51 to the photoelectric receiving device 52; the proportion of the light beam blocked is converted into changes in the strength of the electrical signal in real time, amplifying and capturing the millimeter-level displacement in a non-contact manner.

[0030] Example 2 See also Figure 4-Figure 8 , the present invention provides a technical solution: A bridge displacement detection device, the displacement amplification component 6 includes a deflection rod 61 rotatably set on a guide limit seat 43, the deflection rod 61 is provided with a fixed groove 1 62 and a fixed groove 2 63, the distance between the fixed groove 1 62 and the guide limit seat 43 is smaller than the distance between the fixed groove 2 63 and the guide limit seat 43, the detection rod 2 is provided with a bent rod 64, the end of the bent rod 64 is movably set in the fixed groove 1 62, and the detection member is connected to the fixed groove 2 63.

[0031] The bent rod 64 is located on the detection rod 2. As the detection rod 2 moves in real time, the shift rod 53 on the detection member is connected to the fixed slot 2 63. Because the distance between the fixed slot 1 62 and the guide limit seat 43 is smaller than the distance between the fixed slot 2 63 and the guide limit seat 43, when the deflection rod 61 rotates, the bent rod 64 and the shift rod 53 will shift accordingly, and the shift distance of the bent rod 64 is smaller than the shift distance of the shift rod 53.

[0032] When the bridge is displaced, the detection rod 2 is driven to move downward, and its kinetic energy is first buffered by the shock-absorbing spring - the spring absorbs the impact by elastic deformation and filters out the high-frequency vibration caused by the passage of vehicles; then, the detection rod 2 drives the bending rod 64 to shift, and the bending rod 64 drives the deflection rod 61 to shift. Due to the setting of the fixing groove 1 62 and the fixing groove 2 63, the linear displacement of the detection rod 2 is transmitted to the shift rod 53.

[0033] The detection plate 54 at the end of the shift rod 53 moves accordingly in the detection box 42, acting like a "light gate" cutting the light path from the photoelectric emitting device 51 to the photoelectric receiving device 52; the proportion of the light beam blocked is converted into changes in the strength of the electrical signal in real time, amplifying and capturing the millimeter-level displacement in a non-contact manner.

[0034] Example 3 See also Figure 2-Figure 5 、 Figure 9 , the present invention provides a technical solution: A bridge displacement detection device, the buffer switching component 7 includes a rotating member 8 arranged on a fixed base 1, a plurality of fixed members 9 are arranged on the rotating member 8, and double-sided support members 10 are arranged between the rotating member 8 and the plurality of fixed members 9.

[0035] The rotating member 8 includes a driving motor 81 arranged in the middle of the fixed base 1. The fixed base 1 is centrally provided with a driving shaft 82 connected to the output end of the driving motor 81. A mounting seat 83 is provided on the driving shaft 82.

[0036] The driving motor 81 drives the driving shaft 82 to rotate, and the mounting seat 83 on the driving shaft 82 also rotates accordingly.

[0037] The fixing member 9 includes a connecting frame 91 provided on the fixed base 1 , a lifting top plate 92 is slidably provided on the connecting frame 91 , and the buffer assembly 3 is provided between the connecting frame 91 and the lifting top plate 92 .

[0038] There are multiple fixing parts 9, and a buffer component 3 is provided in each fixing part 9. The lifting top plate 92 can contact the detection rod 2, and when the detection rod 2 squeezes the lifting top plate 92, the buffer component 3 is compressed accordingly. In the initial state, the buffer component 3 is in a compressed state.

[0039] The double-sided support member 10 includes a double-sided support guide rod 101 arranged on the mounting seat 83 , and a sliding frame 102 is provided on both sides of the fixing member 9 . Both ends of the double-sided support guide rod 101 are respectively arranged inside the sliding frame 102 .

[0040] The double-sided support guide rod 101 is a rod structure with multiple bends. Sliding frames 102 are provided on both sides of the connecting frame 91. The double-sided support guide rod 101 and the sliding frames 102 are slidably connected. In this way, when the detection rod 2 squeezes the lifting top plate 92, the connecting base directly contacts the fixed base 1, avoiding the situation where the mounting seat 83 and the drive shaft 82 are subjected to excessive force, and at the same time, it can also avoid the situation where unilateral force is applied.

[0041] When the driving motor 81 rotates, it drives the driving shaft 82 and the mounting seat 83 to rotate, and the mounting seat 83 drives multiple double-sided support guide rods 101 to rotate synchronously. When the lifting top plate 92 contacts the detection rod 2, the detection rod 2 contacts and squeezes the bridge. At the same time, the bridge gives the lifting top plate 92 a reaction force, causing the lifting top plate 92 to move downward and compress the buffer assembly 3. At this time, the connecting frame 91 is attached to the fixed base 1, and the detection work continues.

[0042] Example 4 See also Figure 2 、 Figure 4 and Figure 8 , the present invention provides a technical solution: A bridge displacement detection device, wherein a guide protrusion 11 is provided on the top of the lifting top plate 92, and the detection rod 2 is chamfered on the side close to the lifting top plate 92, and the chamfer of the detection rod 2 is rounded, which makes it possible to quickly fit and squeeze the lifting top plate 92 down in conjunction with the setting of the guide protrusion 11 when the lifting top plate 92 rotates, thereby avoiding the occurrence of jamming.

[0043] Example 5 See also Figure 4 、 Figure 5 and Figure 7 , the present invention provides a technical solution: A bridge displacement detection device, wherein the detection box 42 is slidably set on the side bracket 41, and the detection box 42 and the side bracket 41 are provided with an electric push rod 12. When the bridge moves downward, the detection rod 2 and the shift rod 53 will move downward, so it is necessary to move the detection box 42 together with the internal detection parts downward to ensure that subsequent detection can be carried out. Through the setting of the electric push rod 12, the detection box 42 can be controlled to slide and descend on the side bracket 41, thereby improving the adjustment efficiency.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A bridge displacement detection device, comprising a fixed base (1), characterized in that: The fixed base (1) is provided with a detection rod (2) in contact with the bridge, a buffer assembly (3) is provided between the fixed base (1) and the detection rod (2), a displacement detection component is provided on the fixed base (1), a displacement amplification component (6) is provided between the detection rod (2) and the displacement detection component, and a buffer switching component (7) is provided on the fixed base (1).

2. The bridge displacement detection device according to claim 1, characterized in that: The displacement detection component comprises a side bracket (41) arranged on a fixed base (1); a detection box (42) is arranged on the side bracket (41); a detection member is arranged in the detection box (42); a guide limit seat (43) is arranged on the side bracket (41); and a clamping rod (44) engaged with the guide limit seat (43) is arranged on the detection rod (2).

3. The bridge displacement detection device according to claim 2, characterized in that: The detection element comprises a photoelectric emitting device (51) and a photoelectric receiving device (52) arranged on the inner wall of the detection box (42); a shift rod (53) is slidably arranged on the detection box (42); and a detection plate (54) is arranged at one end of the shift rod (53) located in the detection box (42).

4. The bridge displacement detection device according to claim 2, characterized in that: The displacement amplifying component (6) includes a deflection rod (61) rotatably arranged on the guide limit seat (43), the deflection rod (61) is provided with a fixed groove (62) and a fixed groove (63), the distance between the fixed groove (62) and the guide limit seat (43) is smaller than the distance between the fixed groove (63) and the guide limit seat (43), the detection rod (2) is provided with a bent rod (64), the end of the bent rod (64) is movably arranged in the fixed groove (62), and the detection member and the fixed groove (63) are connected.

5. The bridge displacement detection device according to claim 1, characterized in that: The buffer switching component (7) comprises a rotating member (8) arranged on a fixed base (1), a plurality of fixed members (9) being arranged on the rotating member (8), and double-sided supporting members (10) being arranged between the rotating member (8) and the plurality of fixed members (9).

6. The bridge displacement detection device according to claim 5, characterized in that: The rotating member (8) includes a driving motor (81) arranged in the middle of the fixed base (1); a driving shaft (82) connected to the output end of the driving motor (81) is rotatably arranged at the center of the fixed base (1); and a mounting seat (83) is provided on the driving shaft (82).

7. The bridge displacement detection device according to claim 5, characterized in that: The fixing member (9) comprises a connecting frame (91) arranged on a fixed base (1), a lifting top plate (92) being slidably arranged on the connecting frame (91), and the buffer assembly (3) being arranged between the connecting frame (91) and the lifting top plate (92).

8. The bridge displacement detection device according to claim 5, characterized in that: The double-sided support member (10) comprises a double-sided support guide rod (101) arranged on the mounting seat (83), a sliding frame (102) is arranged on both sides of the fixing member (9), and both ends of the double-sided support guide rod (101) are respectively arranged inside the sliding frame (102).

9. The bridge displacement detection device according to claim 7, characterized in that: A guide protrusion (11) is provided on the top of the lifting top plate (92), and a side of the detection rod (2) close to the lifting top plate (92) is chamfered.

10. The bridge displacement detection device according to claim 2, characterized in that: The detection box (42) is slidably arranged on the side bracket (41), and an electric push rod (12) is arranged on the detection box (42) and the side bracket (41).

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