Bridge expansion joint detection device

Abstract

The utility model relates to the technical field of bridge expansion joint detection, and discloses a bridge expansion joint detection device which comprises a movable support, a lifting mechanism, a mounting frame, a fixed long ruler, a horizontal displacement mechanism, a movable long ruler and a ruler. By the adoption of the structure, driven displacement of all the components can be achieved through the movable support; the fixed long ruler and the movable long ruler can be driven to descend to the expansion joint through the lifting mechanism, so that the fixed long ruler and the movable long ruler can be well attached to the inner wall of the expansion joint, and accurate detection is carried out; the horizontal displacement mechanism can drive the movable long ruler to move so as to adapt to detection of expansion joints with different widths; the movable long ruler is rotationally connected to the horizontal displacement mechanism, the angle of the movable long ruler can be adjusted, the expansion joint with the inner walls of the two sides not parallel can be detected, multi-point detection is carried out in cooperation with the ruler slidably connected to the fixed long ruler, the number of times of position adjustment of the whole component is reduced, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge expansion joint detection technology, specifically a bridge expansion joint detection device. Background Technology

[0002] Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at hinged joints of the bridge to accommodate bridge deck deformation. Due to temperature changes, concrete expands and contracts with temperature fluctuations, causing the width of these expansion joints to increase. Therefore, it is necessary to inspect these expansion joints to identify those that do not meet safety requirements. When inspecting bridge expansion joints, a ruler can be used. First, the worker aligns the ruler with the expansion joint, then marks the measured value with a marker, and finally checks the recorded value to determine if the safety requirements of the expansion joint are met. This process completes the inspection of bridge expansion joints. However, during the alignment process, the ruler is prone to tilting and shifting, which takes time and reduces the efficiency of the inspection.

[0003] To address the aforementioned technical issues, patent document CN 219607907 U discloses a bridge expansion joint detection device, which includes a guide rail, push rod, moving wheel, scale, and graduated groove. By moving the scale on the right side to a suitable position so that it contacts the bridge expansion joint, the width of the bridge expansion joint can be detected, achieving a rapid detection effect.

[0004] However, existing devices have the following drawbacks: they lack a lifting structure, and due to the setting of the rotating screw and the fixed rod, they must be perpendicular to the ground. This makes it difficult for the two scales to descend into the expansion joint, thus preventing the outer sides of the two scales from contacting the inner wall of the expansion joint, which leads to inaccurate test results. Utility Model Content

[0005] This utility model mainly provides a bridge expansion joint detection device, which solves the problem that the existing technology does not have a lifting structure, and because the rotating screw and the fixed rod are set to be perpendicular to the ground, it is difficult for the two scales to descend into the expansion joint, so that the outer side of the two scales cannot contact the inner wall of the expansion joint, which leads to inaccurate detection results.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A bridge expansion joint inspection device includes a movable support with a lifting mechanism on its lower side. A mounting frame is located below the lifting mechanism, and the mounting frame moves vertically via the lifting mechanism. A fixed long ruler is positioned on the left side of the mounting frame, and a horizontal displacement mechanism is positioned on the right side of the mounting frame. A movable long ruler is horizontally rotatably connected to the horizontal displacement mechanism, and the movable long ruler moves closer to or away from the fixed long ruler via the horizontal displacement mechanism. A scale is slidably connected to the upper surface of the fixed long ruler, and the scale is perpendicular to the fixed long ruler. The scale can employ any sliding connection method from existing technologies, as long as it allows sliding on the fixed long ruler, and the zero mark of the scale is located in the same vertical plane as the outer wall of the fixed long ruler. The movable support can utilize existing technology. In use, the operator moves the corresponding components using the movable bracket to the location of the expansion joint to be inspected. Then, the lifting mechanism lowers the mounting frame, bringing the fixed and movable rulers down to the expansion joint. The fixed ruler contacts one side of the inner wall of the expansion joint, and the horizontal displacement mechanism moves the movable ruler away from the fixed ruler until it contacts the other side of the inner wall. The movable ruler is rotatably connected to the horizontal displacement mechanism, allowing the angle of the movable ruler to be adjusted around the connection point to match the other side of the inner wall of the expansion joint. Then, the scale on the movable ruler, which is slidably connected to the fixed ruler, is used to perform multi-point inspection of the expansion joint using the scale on the movable ruler. Conversely, the horizontal displacement mechanism and the lifting mechanism are used to reset the movable ruler. The structure of this application allows for the displacement of each component via a movable support; the lifting mechanism lowers both the fixed and movable rulers to the expansion joint, ensuring they fit snugly against the inner wall for accurate inspection; the horizontal displacement mechanism moves the movable ruler to accommodate expansion joints of varying widths; the movable ruler, rotatably connected to the horizontal displacement mechanism, allows for angle adjustment, enabling inspection of expansion joints with non-parallel inner walls. Furthermore, the sliding scale connected to the fixed ruler facilitates multi-point inspection, reducing the number of position adjustments required and improving inspection efficiency and accuracy.

[0008] Furthermore, the lifting mechanism includes a lifting cylinder mounted on the movable support and a lifting guide rod mounted on the mounting frame. The output end of the lifting cylinder is fixedly connected to the mounting frame, and the lifting guide rod is slidably connected to the movable support. With this structure, the mounting frame can be moved up and down via the lifting cylinder and the lifting guide rod, and the lifting guide rod can provide limiting and enhance the stability of the structure.

[0009] Furthermore, the horizontal displacement mechanism includes an adjusting screw rotatably connected to the mounting bracket and an adjusting guide rod fixedly connected to the mounting bracket, as well as a motor mounted on the mounting bracket for driving the adjusting screw to rotate; a mounting seat is threadedly connected to the adjusting screw, and the mounting seat is slidably connected to the adjusting guide rod; the upper end of the movable ruler is horizontally rotatably connected to the lower end of the mounting seat. With this structure, the adjusting screw can be driven to rotate by the motor, thereby coordinating with the adjusting guide rod to move the mounting seat, thus achieving the displacement of the movable ruler.

[0010] Furthermore, the mounting base includes a main seat threadedly connected to the adjusting rod, a horizontally mounted mounting guide rod on the main seat, a slidably connected sub-seat on the mounting guide rod, and an elastic element between the sub-seat and the main seat. The main seat is slidably connected to the adjusting guide rod. The upper end of the movable ruler is horizontally rotatably connected to the lower end of the sub-seat. With this structure, the mounting base consists of a main seat and a sub-seat, and an elastic element is provided between them. This prevents excessive displacement that could damage the equipment and reduce its service life when the movable ruler moves outward to contact the inner wall of the expansion joint on the other side.

[0011] Furthermore, a rotating rod is provided at the bottom of the sub-base, and a rotating hole is provided on the movable ruler to cooperate with the rotating rod. A bearing for cooperating with the rotating rod is provided in the rotating hole. With this structure, the movable ruler can rotate well.

[0012] Beneficial effects: The structure of this application enables the displacement of each component via a movable bracket; the lifting mechanism lowers the fixed and movable rulers to the expansion joint, allowing them to better fit against the inner wall of the expansion joint for more accurate detection; the horizontal displacement mechanism allows the movable ruler to move, adapting to expansion joints of different widths for detection; the movable ruler is rotatably connected to the horizontal displacement mechanism, allowing for angle adjustment to detect expansion joints with non-parallel inner walls on both sides, and, in conjunction with the scale slidably connected to the fixed ruler, enables multi-point detection, reducing the number of position adjustments required for the entire component and improving detection efficiency and accuracy. Attached Figure Description

[0013] Figure 1 This is a front view of the movable support in this embodiment;

[0014] Figure 2 This is a cross-sectional view of the mounting bracket in this embodiment;

[0015] Figure 3 This is an example. Figure 1 Enlarged diagram of A in the middle.

[0016] Reference numerals in the attached drawings: 1. Movable bracket; 2. Mounting bracket; 3. Fixed long ruler; 4. Movable long ruler; 5. Scale; 6. Lifting cylinder; 7. Lifting guide rod; 8. Adjusting screw; 9. Adjusting guide rod; 10. Motor; 11. Main seat; 12. Mounting guide rod; 13. Subsidiary seat; 14. Elastic element; 15. Rotating rod. Detailed Implementation

[0017] The following will provide a more detailed description of the technical solution of a bridge expansion joint detection device according to the present invention, in conjunction with the embodiments.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 , Figure 2 , Figure 3As shown, a bridge expansion joint detection device according to this embodiment includes a movable support 1, with a lifting mechanism disposed on the lower side of the movable support 1; a mounting frame 2 is disposed on the lower side of the lifting mechanism, and the mounting frame 2 is moved up and down by the lifting mechanism; a fixed long ruler 3 is disposed on the left side of the mounting frame 2, and a horizontal displacement mechanism is disposed on the right side of the mounting frame 2, with a movable long ruler 4 horizontally rotatably connected to the horizontal displacement mechanism, and the movable long ruler 4 is moved closer to or away from the fixed long ruler 3 by the horizontal displacement mechanism; a scale 5 is slidably connected to the upper end face of the fixed long ruler 3, and the scale 5 is perpendicular to the fixed long ruler 3. The lifting mechanism includes a lifting cylinder 6 disposed on the movable support 1 and a lifting guide rod 7 disposed on the mounting frame 2, the output end of the lifting cylinder 6 is fixedly connected to the mounting frame 2, and the lifting guide rod 7 is slidably connected to the movable support 1. The horizontal displacement mechanism includes an adjusting screw 8 rotatably connected to the mounting frame 2 and an adjusting guide rod 9 fixedly connected to the mounting frame 2, as well as a motor 10 mounted on the mounting frame 2 for driving the adjusting screw 8 to rotate. A mounting seat is threaded onto the adjusting screw 8, and the mounting seat is slidably connected to the adjusting guide rod 9. The upper end of the movable ruler 4 is horizontally rotatably connected to the lower end of the mounting seat. The mounting seat includes a main seat 11 threadedly connected to the adjusting rod, a horizontally mounted mounting guide rod 12 on the main seat 11, a slidably connected secondary seat 13 on the mounting guide rod 12, an elastic element 14 between the secondary seat 13 and the main seat 11, and the main seat 11 is slidably connected to the adjusting guide rod 9. The upper end of the movable ruler 4 is horizontally rotatably connected to the lower end of the secondary seat 13. A rotating rod 15 is provided at the bottom of the secondary seat 13, and a rotating hole for engaging the rotating rod 15 is provided on the movable ruler 4, with a bearing for engaging the rotating rod 15 disposed within the rotating hole. In use, the operator moves the corresponding components using the movable bracket 1 to the location of the expansion joint to be inspected. Then, the lifting mechanism lowers the mounting frame 2, causing the fixed ruler 3 and the movable ruler 4 to descend to the expansion joint. The fixed ruler 3 contacts one side of the inner wall of the expansion joint. The horizontal displacement mechanism then moves the movable ruler 4 away from the fixed ruler 3 until it contacts the other side of the inner wall of the expansion joint. The movable ruler 4 is rotatably connected to the horizontal displacement mechanism, allowing the angle of the movable ruler 4 to be adjusted around the connection point to match the other side of the inner wall of the expansion joint. The scale 5, which is slidably connected to the fixed ruler 3, is then moved, and the scale on the scale 5 is used in conjunction with the movable ruler 4 to perform multi-point inspection of the expansion joint. Conversely, the horizontal displacement mechanism and the lifting mechanism are used to reset the components.The structure of this application enables the displacement of each component via the movable bracket 1; the lifting mechanism lowers the fixed ruler 3 and the movable ruler 4 to the expansion joint, allowing them to better fit against the inner wall of the expansion joint for more accurate detection; the horizontal displacement mechanism allows the movable ruler 4 to move, adapting to expansion joints of different widths for detection; the movable ruler 4 is rotatably connected to the horizontal displacement mechanism, allowing for angle adjustment to detect expansion joints with non-parallel inner walls on both sides, and, in conjunction with the scale 5 slidably connected to the fixed ruler 3, enables multi-point detection, reducing the number of position adjustments for the entire component and improving detection efficiency and accuracy.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge expansion joint detection device, characterized in that: The device includes a movable support, with a lifting mechanism on its lower side; a mounting frame is located below the lifting mechanism, and the mounting frame moves up and down via the lifting mechanism; a fixed long ruler is located on the left side of the mounting frame, and a horizontal displacement mechanism is located on the right side of the mounting frame, with a movable long ruler rotatably connected to the horizontal displacement mechanism, and the movable long ruler moves closer to or away from the fixed long ruler via the horizontal displacement mechanism; a scale is slidably connected to the upper end face of the fixed long ruler, and the scale is perpendicular to the fixed long ruler.

2. The bridge expansion joint detection device according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder mounted on the movable support and a lifting guide rod mounted on the mounting frame. The output end of the lifting cylinder is fixedly connected to the mounting frame, and the lifting guide rod is slidably connected to the movable support.

3. The bridge expansion joint detection device according to claim 2, characterized in that: The horizontal displacement mechanism includes an adjusting screw rotatably connected to the mounting frame and an adjusting guide rod fixedly connected to the mounting frame, as well as a motor mounted on the mounting frame for driving the adjusting screw to rotate; a mounting base is threadedly connected to the adjusting screw, and the mounting base is slidably connected to the adjusting guide rod; the upper end of the movable ruler is horizontally rotatably connected to the lower end of the mounting base.

4. The bridge expansion joint detection device according to claim 3, characterized in that: The mounting base includes a main seat that is threadedly connected to the adjusting rod, a horizontally mounted mounting guide rod on the main seat, a slidably connected sub-seat on the mounting guide rod, an elastic element between the sub-seat and the main seat, and the main seat and the adjusting guide rod being slidably connected; the upper end of the movable ruler is horizontally rotatably connected to the lower end of the sub-seat.

5. A bridge expansion joint detection device according to claim 4, characterized in that: The bottom of the sub-base is provided with a rotating rod, and the movable ruler is provided with a rotating hole that matches the rotating rod, and a bearing that matches the rotating rod is provided in the rotating hole.

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