Bridge information acquisition device

Abstract

The utility model provides a bridge information acquisition device, comprising a first mounting seat, a detection plate, a second mounting seat, a contact arm assembly and a detection assembly, the first mounting seat and the second mounting seat are respectively connected with beam plates at two sides of an expansion joint, the detection plate is arranged on the first mounting seat, the contact arm assembly is arranged on the second mounting seat, and the detection assembly is arranged on the second mounting seat. A contact rod of the contact arm assembly abuts against the resistor strip, the contact rod and the resistor strip are both made of metal conductive materials and can form a closed detection loop with a power source, when the contact arm assembly moves in the length direction of the contact arm assembly, the contact position of the contact rod and the resistor strip changes, and the resistance value of the detection loop is increased or decreased. Through the current or resistance value detected by the detection unit, the horizontal position of the contact rod can be indirectly deduced, and then the specific width value of the expansion joint is obtained, so that the bridge information monitoring result is more accurate, and convenience is provided for bridge maintenance and management work.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge condition monitoring, and particularly relates to a bridge information acquisition device. Background Technique

[0002] In order to meet the requirements of the thermal expansion and contraction deformation of the bridge deck, expansion joints are left between two beam slabs during the construction of the bridge to release the stress of the bridge. The expansion joint is a weak position of the bridge and is mostly exposed to the natural environment. Affected by factors such as the bridge deck load and its own stress, it is extremely easy to produce displacement changes of different degrees. The displacement of the expansion joint is one of the important detection indicators of the bridge safety state. Excessive or uneven expansion joints will affect the comfort and safety of vehicle passing, and seriously affect the safe service life of the bridge. Therefore, after the construction of highway bridges is completed, it is necessary to continuously inspect the expansion joints to ensure the safety of the bridge structure and traffic.

[0003] In order to help managers understand the safety of the bridge structure in real time, detect abnormal changes of the bridge early, and improve the maintenance efficiency, the industry usually installs expansion joint monitoring devices on the bridge to continuously collect bridge information. The principle of the existing bridge expansion joint monitoring device is that the displacement of the expansion joint makes some components inside the device contact to achieve alarm monitoring. However, this method can only alarm after the displacement of the expansion joint exceeds the preset displacement, and cannot feedback the specific value of the deformation of the bridge expansion joint in real time. Summary of the Utility Model

[0004] The utility model provides a bridge information acquisition device, aiming to solve the problem that the existing bridge expansion joint monitoring device cannot feedback the specific value of the deformation of the bridge expansion joint in real time.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a bridge information acquisition device for being arranged on both sides of a bridge expansion joint, including:

[0006] A first mounting seat for being arranged on the beam slab on one side of the bridge expansion joint;

[0007] A detection plate is arranged on the first mounting seat. The detection plate is arranged along the vertical plane, and a resistance strip is arranged on the detection plate along the horizontal direction;

[0008] A second mounting seat for being arranged on the beam slab on the other side of the bridge expansion joint;

[0009] A touch arm assembly is arranged on the second mounting seat. The touch arm assembly includes a contact rod that abuts against the resistance strip; and

[0010] The detection component is arranged on one of the beam plates. The detection component includes a power supply and a detection unit. A conductive detection circuit is formed among the resistance strip, the power supply, and the contact rod. The detection unit is used to detect one of the current or resistance value of the detection circuit.

[0011] In a possible implementation manner, the bridge information acquisition device further includes a protective cover. The protective cover is arranged on the corresponding beam plate. The protective cover forms a protective space. The detection board, the power supply, and the detection unit are respectively accommodated in the protective space. One end of the contact arm assembly provided with the contact rod is accommodated in the protective space.

[0012] In a possible implementation manner, an avoidance opening penetrating through the wall thickness of itself is formed on one side of the protective cover adjacent to the second mounting seat. The contact arm assembly penetrates through the avoidance opening.

[0013] In a possible implementation manner, a plurality of the resistance strips are arranged on the detection board at intervals in the vertical direction.

[0014] In a possible implementation manner, connection screws are provided on both the first mounting seat and the second mounting seat.

[0015] In a possible implementation manner, the contact arm assembly further includes a connecting rod. One end of the connecting rod is connected to the second mounting seat, and the other end extends in the horizontal direction. The contact rod is arranged at the other end of the connecting rod.

[0016] In a possible implementation manner, a chute is formed at the other end of the connecting rod. The opening direction of the chute is perpendicular to the plate surface direction of the detection board. The contact rod is slidably matched with the chute;

[0017] The contact arm assembly further includes a spring. The spring is arranged between the bottom of the chute and the contact rod. An insulating sheet is arranged between the spring and the contact rod. The spring is configured with a pre-tightening force to make the contact rod abut against the detection board.

[0018] In a possible implementation manner, the bridge information acquisition device further includes a pressure sensor arranged at the bottom of the chute. The spring abuts against the pressure detection end of the pressure sensor.

[0019] In a possible implementation manner, the detection component further includes a solar panel. The solar panel is used to supplement electric energy to the power supply.

[0020] In a possible implementation manner, the bridge information acquisition device further includes a wireless transmission module. The wireless transmission module is used to wirelessly transmit the detection result of the detection unit to the corresponding processing device.

[0021] Compared with the prior art, the beneficial effects of the bridge information acquisition device provided by the present utility model are as follows:

[0022] The bridge information acquisition device provided by the present utility model includes a first mounting seat, a detection plate, a second mounting seat, a touch arm assembly, and a detection assembly. The first mounting seat and the second mounting seat are respectively connected to the beam slabs on both sides of the expansion joint. The detection plate is arranged on the first mounting seat, and the touch arm assembly is arranged on the second mounting seat. The contact rod of the touch arm assembly abuts against the resistance strip to form a closed detection circuit with the detection assembly. When the touch arm assembly moves along its own length direction, the contact position between the contact rod and the resistance strip changes, and the resistance value of the detection circuit increases or decreases accordingly. By detecting the current or resistance value detected by the detection unit, the horizontal position of the contact rod can be indirectly inferred, and then the specific width value of the expansion joint can be obtained, which is more accurate and helps to provide accurate bridge information for bridge maintenance management personnel, so that bridge management personnel can timely discover problems and handle them early, facilitating the bridge maintenance management work. Description of the Drawings

[0023] Figure 1 Installation schematic diagram of the bridge information acquisition device provided by the embodiment of the present utility model;

[0024] Figure 2 Exploded view of the installation of the bridge information acquisition device provided by the embodiment of the present utility model;

[0025] Figure 3 Structural schematic diagram of the bridge information acquisition device provided by the embodiment of the present utility model after hiding the protective cover;

[0026] Figure 4 Front view of the bridge information acquisition device provided by the embodiment of the present utility model;

[0027] Figure 5 is Figure 4 Cross-sectional view in the A-A direction of

[0028] Figure 6 is Figure 5 Partial enlarged view of part C in

[0029] Figure 7 is Figure 4 Cross-sectional view in the B-B direction of

[0030] Figure 8 Circuit schematic diagram of the detection circuit in the embodiment of the present utility model.

[0031] Explanation of the reference numerals:

[0032] 1. Bridge information acquisition device; 2. Beam slab; 10. First mounting seat; 11. Connecting screw;

[0033] 20. Detection board; 21. Resistance strip; 30. Second mounting seat; 40. Contact arm assembly; 41. Contact rod; 42. Connecting rod; 421. Chute; 43. Spring; 44. Insulating sheet; 50. Protective cover; 51. Avoidance opening;

[0034] 60. Pressure sensor; 70. Solar panel; 80. Wireless transmission module; 90. Detection component. Detailed implementation manner

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] It should be noted that when an element is referred to as being "fixed to", "fixed", "fixedly provided on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to", "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is referred to as being "provided on", "provided on" another element, it can be directly on the other element or there can also be an intermediate element. "Multiple" refers to two or more quantities. "At least one" refers to one or more quantities. "Several" refers to one or more quantities.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs.

[0038] Please refer to Figures 1 to 8 together, and the bridge information acquisition device 1 provided by the embodiment of the present utility model will be described below.

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8, an embodiment of the present utility model provides a bridge information acquisition device 1, which is used to be arranged on both sides of a bridge expansion joint, and includes a first mounting seat 10, a detection plate 20, a second mounting seat 30, a touch arm assembly 40 and a detection assembly 90. The first mounting seat 10 is used to be arranged on a beam slab 2 on one side of the bridge expansion joint; the detection plate 20 is arranged on the first mounting seat 10, the detection plate 20 is arranged along a vertical plane, and a resistance strip 21 is arranged on the detection plate 20 in the horizontal direction; the second mounting seat 30 is used to be arranged on a beam slab 2 on the other side of the bridge expansion joint; the touch arm assembly 40 is arranged on the second mounting seat 30, and the touch arm assembly 40 includes a contact rod 41 that abuts against the resistance strip 21; the detection assembly 90 is arranged on one of the beam slabs 2, and the detection assembly 90 includes a power supply and a detection unit. A conductive detection circuit is formed among the resistance strip 21, the power supply and the contact rod 41, and the detection unit is used to detect one of the current or resistance value of the detection circuit.

[0040] Compared with the prior art, the beneficial effect of the bridge information acquisition device 1 provided by the embodiment of the present utility model is:

[0041] The bridge information acquisition device 1 provided by the embodiment of the present utility model can detect the width of the expansion joint. Specifically, it includes a first mounting seat 10, a detection plate 20, a second mounting seat 30, a touch arm assembly 40 and a detection assembly 90. The first mounting seat 10 and the second mounting seat 30 are respectively connected to the beam slabs 2 on both sides of the expansion joint. The detection plate 20 is arranged on the first mounting seat 10, the touch arm assembly 40 is arranged on the second mounting seat 30, the contact rod 41 of the touch arm assembly 40 abuts against the resistance strip 21. Both the contact rod 41 and the resistance strip 21 are made of metal conductive materials and can form a closed detection circuit with the power supply. When the touch arm assembly 40 moves along its own length direction, the contact position between the contact rod 41 and the resistance strip 21 changes, and the resistance value of the detection circuit increases or decreases accordingly. By the current or resistance value detected by the detection unit, the horizontal position where the contact rod 41 is located can be indirectly inferred, and then the specific width value of the expansion joint can be known, making the bridge information monitoring result more accurate, which helps to provide accurate bridge information for bridge maintenance management personnel, so that bridge management personnel can discover problems in time and handle them early, providing convenience for bridge maintenance management work.

[0042] In the embodiment of the present utility model, the first mounting seat 10 and the second mounting seat 30 are used to be connected to the beam slab 2, and the installation methods are as Figure 1 and Figure 2 shown. Optionally, the first mounting seat 10 and the second mounting seat 30 can be fixed by fasteners, or can be embedded in the beam slab 2 when the beam slab 2 is poured.

[0043] In the embodiment of the present utility model, a resistance strip 21 is provided on the detection board 20. The resistance strip 21 is a metal strip with a certain resistance value. Using the principle of a sliding rheostat, when the width of the expansion joint increases or decreases, the contact rod 41 slides relative to the resistance strip 21, causing the resistance value of the detection circuit to change accordingly. The power supply can be a lithium battery, and the detection unit can be an ammeter or a resistance meter. After correctly connecting it to the detection circuit, the width value of the expansion joint can be inferred from the detected current or resistance value.

[0044] The detection board 20 can be made of ceramic or other insulating materials. The resistance strip 21 can be a conductive metal strip. The resistance strip 21 is fixed on the detection board 20 by bonding or other means. The contact rod 41 can be made of materials such as aluminum or copper to ensure good electrical conductivity of the contact rod 41. The contact rod 41 is connected with a wire, and a circuit is formed by connecting with the wire and the power supply, etc.

[0045] Please refer to Figure 1 and Figure 2 In some possible embodiments, the bridge information acquisition device 1 further includes a protective cover 50. The protective cover 50 covers the corresponding beam slab 2. The protective cover 50 forms a protective space. The detection board 20, the power supply, and the detection unit are respectively accommodated in the protective space. One end of the touch arm assembly 40 provided with the contact rod 41 is accommodated in the protective space. The protective cover 50 is used to protect the internal components such as the detection board 20, the power supply, and the detection unit from being affected by wind, sun, and rain. The protective cover 50 can be made of metal or other materials.

[0046] Please refer to Figure 2 In some possible embodiments, an avoidance opening 51 penetrating the wall thickness of itself is formed on one side of the protective cover 50 adjacent to the second mounting seat 30. The touch arm assembly 40 penetrates through the avoidance opening 51. A flexible protective sheet can be provided at the avoidance opening 51. The protective sheet is made of rubber or other waterproof fabrics. While not affecting the normal movement of the touch arm assembly 40, it can also play a role in waterproofing and sun protection, protecting the normal operation of each component in the protective space.

[0047] Please refer to Figure 3 In some possible embodiments, a plurality of resistance strips 21 are arranged at intervals in the vertical direction on the detection board 20. Each resistance strip 21 can form a detection circuit. By arranging a plurality of resistance strips 21, when there is a height difference between the beam slabs 2 on both sides of the expansion joint, the contact rod 41 moves upward or downward and contacts and conducts with the corresponding resistance strip 21. According to the specific position of the resistance strip 21 that conducts with the contact rod 41, the relative height change situation between the two beam slabs 2 can be known. Such as Figure 8As shown, multiple resistor bars 21 can be arranged in parallel and share a power supply and a detection unit. Alternatively, multiple resistor bars 21 can also be arranged independently, and there are multiple power supplies and detection units corresponding to the resistor bars 21 one by one, thereby forming multiple independent detection circuits that do not affect each other.

[0048] It can be understood that Figure 8 the detection circuit shown is only the most basic circuit structure. According to needs, other functional modules can also be added on the basis of the detection circuit, such as adding a wireless transmission module for signal reception and transmission, an intelligent identification module for judging whether the deformation amount of the bridge expansion joint is within the normal range, and an alarm module for sending an alarm when an abnormality in the expansion joint is found, etc.

[0049] Please refer to Figure 1 and Figure 2 In some possible embodiments, connecting screws 11 are provided on both the first mounting seat 10 and the second mounting seat 30 for connecting to the corresponding beam slab 2.

[0050] Please refer to Figure 3 、 Figure 4 and Figure 5 In some possible embodiments, the contact arm assembly 40 further includes a connecting rod 42. One end of the connecting rod 42 is connected to the second mounting seat 30, and the other end extends in the horizontal direction. The contact rod 41 is provided at the other end of the connecting rod 42. The part of the connecting rod 42 in contact with the contact rod 41 is made of an insulating material.

[0051] To ensure that the contact rod 41 and the resistor sheet can make contact smoothly, please refer to Figure 5 、 Figure 6 and Figure 7 In some possible embodiments, a sliding groove 421 is formed at the other end of the connecting rod 42. The opening direction of the sliding groove 421 is perpendicular to the plate surface direction of the detection plate 20. The contact rod 41 is slidably fitted in the sliding groove 421; the contact arm assembly 40 further includes a spring 43. The spring 43 is provided between the bottom of the sliding groove 421 and the contact rod 41. An insulating sheet 44 is provided between the spring 43 and the contact rod 41. The spring 43 is configured with a pre-tightening force to make the contact rod 41 abut against the detection plate 20, preventing poor contact between the contact rod 41 and the resistor sheet.

[0052] Please refer to Figure 6 and Figure 7 In some possible embodiments, the bridge information acquisition device 1 further includes a pressure sensor 60 provided at the bottom of the sliding groove 421. The spring 43 abuts against the pressure detection end of the pressure sensor 60.

[0053] In this embodiment, the pressure sensor 60 is used to detect the pressure transmitted by the contact rod 41 through the spring 43. When the two beam plates 2 have a relative displacement along the axial direction of the spring 43, the pressure exerted by the spring 43 on the pressure sensor 60 will increase or decrease. By monitoring the pressure value of the pressure sensor 60, it can be known whether the two beam plates 2 have a relative displacement in the axial direction of the contact rod 41. On the premise of knowing the elastic modulus of the spring 43, the relative displacement amount of the two beam plates 2 in the axial direction of the spring 43 can be calculated according to the change of the pressure value.

[0054] Please refer to Figure 2 and Figure 4 , in some possible embodiments, the detection component 90 further includes a solar panel 70. The solar panel 70 can be installed on the protective cover 50 or other positions as long as it can receive sunlight. The solar panel 70 is used to supplement electric energy to the power supply so that the detection component 90 can operate for a long time.

[0055] Please refer to Figure 1 and Figure 2 , in some possible embodiments, the bridge information acquisition device 1 further includes a wireless transmission module 80. The wireless transmission module 80 can use a wireless network (which can be 4G or 5G) to transmit and receive signals. The wireless transmission module 80 is used to wirelessly transmit the detection results of the detection unit to the corresponding processing device. After receiving the detection results, the processing device can calculate the width and height changes of the expansion joint. By installing the bridge information acquisition device 1 at the positions of each expansion joint of the bridge, the changes of the entire bridge can be monitored in real time for daily maintenance.

[0056] It can be understood that the various parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be elaborated here. After this explanation, it can be considered that the specification of the present invention has recorded each combined embodiment and can support different combined embodiments.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge information collection device, used to be arranged on both sides of a bridge expansion joint, characterized in that: include: A first mounting seat is used to be arranged on a beam plate on one side of the bridge expansion joint; A detection plate is arranged on the first mounting seat, the detection plate is arranged along a vertical plane, and a resistance strip is arranged along the upper side of the detection plate in a horizontal direction; A second mounting seat is used to be arranged on the beam plate on the other side of the bridge expansion joint; A contact arm assembly, disposed on the second mounting seat, the contact arm assembly comprising a contact rod abutting against the resistor bar; as well as A detection component is arranged on one of the beam plates, and the detection component includes a power supply and a detection unit. A conductive detection circuit is formed between the resistor bar, the power supply, and the contact rod. The detection unit is used to detect one of the current or resistance value of the detection circuit.

2. The bridge information collection device according to claim 1, characterized in that: The bridge information collection device also includes a protective cover, which is arranged on the corresponding beam plate, and the protective cover forms a protective space. The detection plate, the power supply and the detection unit are respectively accommodated in the protective space, and the contact arm assembly is provided with one end of the contact rod accommodated in the protective space.

3. The bridge information collection device according to claim 2, characterized in that: A relief opening penetrating through the wall thickness of the protective cover is provided on one side of the protective cover adjacent to the second mounting seat, and the contact arm assembly passes through the relief opening.

4. The bridge information collection device according to claim 1, characterized in that: A plurality of the resistor bars are arranged on the detection board at intervals along the vertical direction.

5. The bridge information collection device according to claim 1, characterized in that: The first mounting seat and the second mounting seat are both provided with connecting screws.

6. The bridge information collection device according to claim 1, characterized in that: The contact arm assembly also includes a connecting rod, one end of which is connected to the second mounting seat, and the other end of which extends in a horizontal direction, and the contact rod is arranged at the other end of the connecting rod.

7. The bridge information collection device according to claim 6, characterized in that: The other end of the connecting rod is provided with a slide groove, the opening direction of the slide groove is perpendicular to the plate surface direction of the detection plate, and the contact rod is slidably matched with the slide groove; The contact arm assembly also includes a spring, which is arranged between the bottom of the slide slot and the contact rod, an insulating sheet is arranged between the spring and the contact rod, and the spring is configured with a preload force that causes the contact rod to abut against the detection plate.

8. The bridge information collection device according to claim 7, characterized in that: The bridge information collection device also includes a pressure sensor arranged at the bottom of the chute, and the spring abuts against the pressure detection end of the pressure sensor.

9. The bridge information collection device according to claim 1, characterized in that: The detection component also includes a solar panel, and the solar panel is used to supplement electrical energy to the power supply.

10. The bridge information collection device according to claim 1, characterized in that: The bridge information collection device further includes a wireless transmission module, and the wireless transmission module is used to wirelessly send the detection result of the detection unit to a corresponding processing device.

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