Bridge displacement detection device

Abstract

The application 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, a displacement detection component is arranged on the fixed base, a displacement amplification component is arranged between the detection rod and the displacement detection component, and a buffer switching component is arranged on the fixed base. The bridge displacement detection device can realize automatic switching of the buffer assembly through the buffer switching component according to the working condition of the buffer assembly, greatly reduces the work load and work intensity of workers, and guarantees the accuracy of bridge displacement detection through the cooperation of the displacement detection component, the displacement amplification component 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.

[0004] 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.

[0005] To this end, we propose a bridge displacement detection device. Summary of the Invention

[0006] A technical problem to be solved by this application is: how to design a bridge displacement detection device with automatic switching buffer components.

[0007] 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.

[0008] 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.

[0009] In some embodiments, the detection member comprises a photoelectric emitter and a photoelectric receiver arranged on the inner wall of the detection box, and a displacement rod is arranged on the detection box in a sliding manner, and the displacement rod is provided with a detection plate at one end in the detection box.

[0010] In some embodiments, the displacement amplification component comprises a deflection rod arranged in rotation on a guide limiting seat, 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 limiting seat is smaller than the distance between the fixed groove two and the guide limiting seat, the detection rod is provided with a bent rod, the end of the bent rod is movably arranged in the fixed groove one, and the detection member is connected with the fixed groove two.

[0011] In some embodiments, the buffer switching component comprises a rotating member arranged on a fixed base, a plurality of fixing members are arranged on the rotating member, and a double-sided supporting member is arranged between the rotating member and the plurality of fixing members.

[0012] In some embodiments, the rotating member comprises a driving motor arranged in the middle of the fixed base, a driving shaft connected with the output end of the driving motor is arranged at the center of the fixed base in rotation, and a mounting seat is arranged on the driving shaft.

[0013] In some embodiments, the fixing member comprises a connecting frame arranged on the fixed base, a lifting top plate is arranged on the connecting frame in a sliding manner, and the buffer assembly is arranged between the connecting frame and the lifting top plate.

[0014] In some embodiments, the double-sided supporting member comprises a double-sided supporting guide rod arranged on the mounting seat, a sliding frame is arranged on both sides of the fixing member, and the double-sided supporting guide rod is arranged in the sliding frame at both ends, respectively.

[0015] In some embodiments, a guide protrusion is arranged on the top of the lifting top plate, and the detection rod is chamfered on the side close to the lifting top plate.

[0016] In some embodiments, the detection box is arranged on the side support in a sliding manner, and an electric push rod is arranged on the detection box and the side support.

[0017] The present application has at least the following advantages:

[0018] 1. The automatic switching function of the buffer assembly can be realized by the buffer switching component according to the working condition of the buffer assembly, so as to greatly reduce the workload and working strength of the workers, and the accuracy of the bridge displacement detection is ensured by the cooperation of the displacement detection component, the displacement amplification component and the replacement of the buffer assembly.

[0019] 2, displacement amplification component can directly amplify the displacement of the detection rod (i.e. 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 DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the present application;

[0021] Figure 2 It is the overall structure schematic diagram of the present application;

[0022] Figure 3 The present application Figure 2 Partial structure schematic diagram;

[0023] Figure 4 It is the overall structure schematic diagram of the present application; Figure 3 Partial structure schematic diagram;

[0024] Figure 5 It is the overall structure schematic diagram of the present application; Figure 4 The A area amplification structure schematic diagram of the present application;

[0025] Figure 6 It is the overall structure schematic diagram of the present application;

[0026] Figure 7 It is the overall structure schematic diagram of the present application;

[0027] Figure 8 It is the overall structure schematic diagram of the present application;

[0028] Figure 9 The present application Figure 8 Partial structure explosion schematic diagram.

[0029] In the figure: 1, fixed base; 2, detection rod; 3, buffer assembly; 41, side support; 42, detection box; 43, guide limiting seat; 44, clamping rod; 51, photoelectric emitter; 52, photoelectric receiver; 53, displacement rod; 54, detection plate; 6, displacement amplification component; 61, deflection rod; 62, fixed groove one; 63, fixed groove two; 64, bent rod; 7, buffer switching component; 8, rotating part; 81, driving motor; 82, driving shaft; 83, mounting seat; 9, fixed part; 91, connecting frame body; 92, lifting top plate; 10, double-side supporting part; 101, double-side supporting guide rod; 102, sliding frame; 11, guide protrusion; 12, electric push rod. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] See also Figures 1-9 , the present invention provides a technical solution:

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The detection piece includes a photoelectric emitter 51 and a photoelectric receiver 52 arranged on the inner wall of the detection box 42, and a displacement rod 53 is arranged on the detection box 42 in a sliding manner, and the displacement rod 53 is arranged with a detection plate 54 at one end in the detection box 42.

[0040] The photoelectric emitter 51 and the photoelectric receiver 52 are used in cooperation, and the two form a set of stable detection components. Specifically, the emission 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. The receiving end captures the subtle fluctuations of light intensity and restores it to electrical signal changes. The detection plate 54 replaces the displacement of the bridge. By blocking the light beam through the detection plate 54, it can be measured that the bridge has displacement. According to the shaking requirement of the bridge, a certain distance exists between the detection plate 54 and the photoelectric emitter 51 and the photoelectric receiver 52.

[0041] When the bridge is displaced, the driving detection rod 2 moves downward, and its kinetic energy is first buffered by the shock-absorbing spring. The spring absorbs the impact by elastic deformation and filters the high-frequency vibration caused by the vehicle passing. Then, the detection rod 2 transmits linear displacement to the displacement rod 53. The detection plate 54 at the end of the displacement rod 53 moves in the detection box 42, like a "light gate" cutting the light path of the photoelectric emitter 51 to the photoelectric receiver 52. The proportion of the blocked light beam is converted into the change of the electrical signal strength in real time, which is amplified and captured in a non-contact manner.

[0042] Embodiment 2

[0043] Please refer to Figures 4-8 The present application provides a technical solution:

[0044] A bridge displacement detection device, the displacement amplification component 6 includes a deflection rod 61 rotatably arranged on the guide limiting seat 43, the deflection rod 61 is provided with a fixed groove one 62 and a fixed groove two 63, the distance between the fixed groove one 62 and the guide limiting seat 43 is less than the distance between the fixed groove two 63 and the guide limiting 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 one 62, and the detection piece is connected with the fixed groove two 63.

[0045] The bent rod 64 is located on the detection rod 2 and moves in real time with the detection rod 2. The displacement rod 53 on the detection piece is connected with the fixed groove two 63. Because the distance between the fixed groove one 62 and the guide limiting seat 43 is less than the distance between the fixed groove two 63 and the guide limiting seat 43, when the deflection rod 61 rotates, the bent rod 64 and the displacement rod 53 will be displaced, and the displacement distance of the bent rod 64 is less than the displacement distance of the displacement rod 53.

[0046] 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.

[0047] 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.

[0048] Example 3

[0049] See also Figures 2-5 、 Figure 9 , the present invention provides a technical solution:

[0050] 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.

[0051] 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.

[0052] The driving motor 81 drives the driving shaft 82 to rotate, and the mounting seat 83 on the driving shaft 82 also rotates accordingly.

[0053] 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 .

[0054] 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.

[0055] 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 .

[0056] The double-side support guide rod 101 is a multi-bent rod structure, the slide frame 102 is arranged on the two sides of the connecting frame body 91, and the double-side support guide rod 101 and the slide frame 102 are in sliding connection, so that when the detection rod 2 extrudes the lifting top plate 92, the connecting base directly contacts the fixed base 1, the force on the mounting seat 83 and the driving shaft 82 is avoided to be too large, and the condition of unilateral force is also avoided.

[0057] When the driving motor 81 rotates, the driving shaft 82 and the mounting seat 83 are driven to rotate, the mounting seat 83 drives the plurality of double-side support guide rods 101 to synchronously rotate, when the lifting top plate 92 contacts the detection rod 2, the detection rod 2 contacts and extrudes the bridge, and at the same time, the bridge provides a reaction force to the lifting top plate 92, so that the lifting top plate 92 moves downward and compresses the buffer assembly 3, at this time, the connecting frame body 91 is attached to the fixed base 1, and the detection work continues.

[0058] Embodiment 4

[0059] Please refer to Figure 2 , Figure 4 and Figure 8 , the present application provides a technical solution:

[0060] A bridge displacement detection device, the lifting top plate 92 is provided with a guide protrusion 11 on the top, the detection rod 2 is chamfered on one side close to the lifting top plate 92, and the chamfering of the detection rod 2 is rounded, so that when the lifting top plate 92 rotates, the guide protrusion 11 is matched to be arranged, the lifting top plate 92 can be quickly attached and extruded downward, and the clamping condition is avoided.

[0061] Embodiment 5

[0062] Please refer to Figure 4 , Figure 5 and Figure 7 , the present application provides a technical solution:

[0063] A bridge displacement detection device, the detection box 42 is slidably arranged on the side support 41, and the detection box 42 and the side support 41 are provided with an electric push rod 12, when the bridge moves downward, the detection rod 2 and the displacement rod 53 will also move downward, so that the detection box 42 needs to be moved downward together with the detection parts inside, so as to ensure that the subsequent detection can be continued, and through the arrangement of the electric push rod 12, the sliding downward of the detection box 42 on the side support 41 can be controlled, and the adjustment efficiency is improved.

[0064] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present application will be limited to the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be apparent to one of ordinary skill in the art that many embodiments of the application can be made without departing from the spirit or scope of the application. Numerous specific details are described in order to provide a thorough understanding of the embodiments of the application. However, it will be apparent to one of ordinary skill in the art that embodiments of the present application can be practiced without many of these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to unnecessarily obscure aspects of the embodiments of the application. In general, well-known methods, procedures and components have been described in detail so as not to unnecessarily obscure aspects of the embodiments of the present application.

[0065] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the spirit and scope of the present application.

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); 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); 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); The fixing member (9) includes a connecting frame (91) arranged on a fixed base (1), a lifting top plate (92) is slidably arranged on the connecting frame (91), and the buffer assembly (3) is arranged between the connecting frame (91) and the lifting top plate (92); the double-sided support member (10) includes a double-sided support guide rod (101) arranged on a 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).

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: 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.

6. 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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