Bridge crack detection device
By designing a bridge detection device with a rotating frame, the problem of frequent retraction of cameras in the prior art when encountering street lights is solved, and efficient bridge bottom detection is achieved, ensuring the accuracy of the detection data.
Patent Information
- Application Number
- CN202510149744.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-05-02
AI Technical Summary
Existing bridge detection devices need to frequently retract the camera when encountering street lights, resulting in a reduced detection efficiency.
A bridge crack detection device is designed to support the fixing frame through multiple rotating frames and rotate the rotating frame when encountering street lights, so as to achieve avoidance without retracting the camera.
It realizes that street lights can be avoided without retracting the camera when detecting the bottom of the bridge, improves detection efficiency and ensures the accuracy of detection data.
Smart Images
Figure CN119914812A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of bridge detection, and in particular to a bridge crack detection device. Background Art
[0002] With the rapid development of infrastructure construction in my country, various types of bridges have been built all over the country. In the long-term use process, bridges will inevitably be affected by both human factors (such as vehicle overloading, ship collision, etc.) and natural environmental factors (such as climate change, material corrosion), which may cause cracks at the bottom of the bridge. In order to ensure the structural safety of the bridge and extend its service life, it is very important to regularly check whether there are cracks at the bottom of the bridge, accurately measure the characteristics of the cracks (including depth, length and width), and reasonably evaluate the impact of the cracks on the bridge structure, so as to choose the appropriate repair plan and timing.
[0003] However, in actual inspection work, bridges are usually equipped with lighting facilities such as street lamps, and existing inspection equipment must avoid these obstacles when inspecting the bottom of the bridge. This requires the inspection device to be frequently extended and retracted, which not only destroys the continuity of the inspection work, but also reduces the stability of the inspection process, ultimately resulting in a significant reduction in the overall inspection efficiency. Summary of the invention
[0004] The present invention provides a bridge crack detection device to overcome the disadvantage that the existing detection device needs to be continuously retracted and extended when encountering a street lamp, resulting in reduced detection efficiency.
[0005] The technical implementation scheme of the present invention is: a bridge crack detection device, including: a mobile vehicle, the mobile vehicle is equipped with an adjustment platform, the adjustment platform is fixedly connected to a support frame, the support frame is provided with an adjustment frame, the adjustment frame is fixedly connected to a plurality of connecting frames, the connecting frame is provided with a fixed frame, the connecting frame is rotatably connected to a rotating frame, the fixed frame is provided with a curved slide groove, the rotating frame is provided with circumferentially distributed convex columns, the curved slide groove of the fixed frame is used to limit adjacent convex columns on the rotating frame, the rotating frame is used to support adjacent fixed frames, a plurality of the fixed frames are jointly installed with a first electric telescopic frame through a mounting seat, the telescopic end of the first electric telescopic frame is fixedly connected to a second electric telescopic frame, the telescopic end of the second electric telescopic frame is fixedly connected to a camera, the fixed frame is provided with a positioning component for fixing the positions of the rotating frame and the fixed frame, and the connecting frame is provided with an extrusion component for limiting the rotation direction of the rotating frame.
[0006] As an improvement of the above scheme, the positioning assembly includes: a fixed sleeve, slidably connected to the adjacent fixed frame, the fixed sleeve is used to fix the rotating frame; an extrusion block, fixed to the fixed sleeve, and a first spring is fixed between the fixed sleeve and the mounting seat on the fixed frame.
[0007] As an improvement of the above-mentioned scheme, the extrusion assembly includes: a sliding plate, which is slidably connected to the adjacent connecting frame; a limiting rod, which is fixed to the sliding plate, and the limiting rod is slidably connected to the adjacent connecting frame, and the rotating frame is provided with circumferentially distributed limiting grooves, and the limiting rod limits the rotating frame through the limiting grooves, and a first tension spring is provided between the sliding plate and the connecting frame; a directional assembly, which is provided on the adjacent connecting frame and is used to limit the rotation of the adjacent rotating frame.
[0008] As an improvement of the above solution, the limiting groove is an arc-shaped groove, and the depth of one end of the limiting groove is smaller than the depth of the other end thereof.
[0009] As an improvement of the above scheme, the orienting assembly includes: a limit frame, which is slidably connected to the adjacent connecting frame, and a second spring is fixedly connected between the limit frame and the connecting frame; a rectangular block, which is fixed to the adjacent rotating frame, and the rectangular block is rotatably connected to the connecting frame, and the limit frame fixes the rotating frame through the rectangular block.
[0010] As an improvement of the above scheme, it also includes: an adjustment component, which is arranged on the adjustment frame and is used to limit the position of the adjustment frame, and the adjustment component includes: positioning wheels, which are distributed at intervals and are rotatably connected to the adjustment frame, and the two positioning wheels are used to position the position of the adjustment frame; a sliding block, which is arranged on the adjustment frame, the sliding block is slidably connected to the support frame, an elastic member is fixed between the sliding block and the support frame, and the adjustment frame is slidably connected to the support frame.
[0011] As an improvement of the above scheme, it also includes: a limit assembly, which is arranged on the sliding block and is used to connect the adjusting frame and the sliding block, and the limit assembly includes: a positioning rod, which is slidably connected to the sliding block, the positioning rod is in contact with the support frame, and a third spring is fixedly connected between the positioning rod and the sliding block, a positioning hole is provided on the adjusting frame, and the positioning rod drives the adjusting frame to move through the positioning hole, and a guide groove is provided in the support frame, and the guide groove is used to limit the positioning rod, and a circular hole connected to the guide groove is opened on the side of the support frame away from the adjustment platform, and the diameter of the circular hole is larger than the diameter of the positioning rod; a plurality of support assemblies are arranged on the adjusting frame and are used to fix the adjusting frame after the support frame and the adjusting frame are separated.
[0012] As an improvement of the above scheme, the supporting assembly includes: two fixed rods, both of which are slidably connected to the adjusting frame; a lifting frame, which is slidably connected to the adjusting frame, the two fixed rods are slidably connected to the lifting frame, the fixed rods are fixedly connected to a plurality of guide rods, the adjusting frame is provided with inclined grooves with the same number as the guide rods, the inclined grooves are used to limit adjacent guide rods, and a second tension spring is fixedly connected between the lifting frame and the adjusting frame.
[0013] As an improvement of the above solution, the distance between the two inclined slots decreases as the distance between the two inclined slots and the lifting frame increases, so as to make the two fixing rods approach each other.
[0014] As an improvement of the above solution, the support assembly further includes: an L-shaped rod fixedly connected to the lifting frame, and the support frame limits the height of the lifting frame through the L-shaped rod.
[0015] The beneficial effects are as follows: 1. In the process of detecting the bottom of the bridge, the present invention supports the fixed frame through multiple rotating frames, and when encountering street lamps, the rotating frames are rotated in turn, so that the street lamps can be avoided without retracting the camera, thereby ensuring the efficiency of the detection of the bottom of the bridge; 2. In the process of avoiding street lamps, the present invention fixes the rotating frame that is not in contact with the street lamps through the limit frame and the fixing sleeve to prevent the rotating frame from rotating during the avoidance process, causing the position of the camera to change and affecting the accuracy of the device detection data; 3. When the displacement distance of the mobile vehicle is too large, the present invention disconnects the connection between the support frame and the adjustment frame and fixes the adjustment frame with a fixing rod to prevent the mobile vehicle from rigidly pulling the adjustment frame after the support frame and the adjustment frame are unable to buffer the displacement distance of the mobile vehicle, causing the device to be damaged and unusable. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the mobile vehicle, the adjustment platform and the support frame of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting frame, the fixing frame and the rotating frame of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the fixing sleeve, the extrusion block and the sliding plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the first spring, the limiting frame and the second spring of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the limiting rod, the first tension spring and the limiting frame of the present invention; Figure 7It is an exploded view of the three-dimensional structure of the sliding plate, the limiting rod and the limiting groove of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the rotating frame and the limiting groove of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the lifting frame, the second tension spring and the L-shaped rod of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the sliding block, the elastic member and the positioning rod of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the positioning rod and the third spring of the present invention.
[0017] Figure numerals: 1-mobile vehicle, 2-adjusting platform, 3-support frame, 4-adjusting frame, 5-connecting frame, 6-fixed frame, 7-rotating frame, 8-first electric telescopic frame, 9-second electric telescopic frame, 10-camera, 11-fixed sleeve, 12-extrusion block, 13-first spring, 14-sliding plate, 15-limiting rod, 16-limiting groove, 17-first tension spring, 18-limiting frame, 19-second spring, 20-rectangular block, 21-positioning wheel, 22-sliding block, 23-elastic member, 24-positioning rod, 25-third spring, 26-guide groove, 27-fixed rod, 28-lifting frame, 29-guide rod, 30-oblique groove, 31-second tension spring, 32-L-shaped rod. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, and back that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.
[0019] A bridge crack detection device, such as Figure 1-Figure 7 As shown, it includes: a mobile vehicle 1, the mobile vehicle 1 is equipped with an adjustment platform 2, the adjustment platform 2 is fixedly connected to a support frame 3, the support frame 3 is provided with an adjustment frame 4, the adjustment frame 4 is fixedly connected to a plurality of connecting frames 5, the connecting frame 5 is provided with a fixed frame 6, the connecting frame 5 is rotatably connected to a rotating frame 7, the fixed frame 6 is provided with a curved slide groove, the rotating frame 7 is provided with circumferentially distributed convex columns, the curved slide groove of the fixed frame 6 is used to limit the adjacent convex columns on the rotating frame 7, the rotating frame 7 is used to support adjacent fixed frames 6, and a plurality of fixed frames 6 are jointly equipped with a first electric telescopic frame 8 through a mounting seat, the telescopic end of the first electric telescopic frame 8 is fixedly connected to a second electric telescopic frame 9, the telescopic end of the second electric telescopic frame 9 is fixedly connected to a camera 10, the fixed frame 6 is provided with a positioning component for fixing the positions of the rotating frame 7 and the fixed frame 6, and the connecting frame 5 is provided with an extrusion component for limiting the rotation direction of the rotating frame 7.
[0020] The above scheme provides a method of avoiding the street lamp by driving the rotating frame 7 to rotate and switch the fixed position when encountering a street lamp, and there is no need to collect the camera 10; the adjustment platform 2 is an existing device for adjusting the direction and height of the support frame 3. In this embodiment, the support frame 3 and the adjustment frame 4 can be regarded as fixedly connected. In this embodiment, there are two connecting frames 5 on the adjustment frame 4, which are used to ensure that there is always a rotating frame 7 in contact with the fixed frame 6. The rotating frame 7 is composed of straight rods of the same length, and the angle between two adjacent straight rods in the rotating frame 7 is 90°. The length of the straight rod on the rotating frame 7 is greater than the diameter of the street lamp, ensuring that the street lamp can normally pass through the gap between the connecting frame 5 and the fixed frame 6. The gap is greater than the diameter of the street lamp. The distance between the two connecting frames 5 is greater than the diameter of the street lamp, ensuring that the two rotating frames 7 cannot be in contact with the street lamp at the same time. The convex column of the rotating frame 7 is located on its straight rod, and the width of the curved slide groove on the fixed frame 6 is the same as the diameter of the convex column, which is used to prevent the fixed frame 6 from shaking relative to the rotating frame 7 during use. The center of the circle where the curved slide groove on the fixed frame 6 is located coincides with the rotation axis of the rotating frame 7. An electric rotating shaft is arranged between the first electric telescopic frame 8 and the mounting seat on the fixed frame 6 (for the convenience of expression, the mounting seat and the first electric telescopic frame 8 are regarded as one body), and an electric rotating shaft is also arranged between the first electric telescopic frame 8 and the second electric telescopic frame 9. The electric rotating shaft is used to adjust the direction of the first electric telescopic frame 8 and the second electric telescopic frame 9. The first electric telescopic frame 8 and the second electric telescopic frame 9 are both used to drive the camera 10 to move and adjust its position for detecting the bottom of the bridge, and both are existing devices. The specific structure and work flow will not be described in detail.
[0021] Further, such as Figure 4 , Figure 5 and Figure 7 As shown, the positioning assembly includes: a fixed sleeve 11, which is slidably connected to the adjacent fixed frame 6, and the fixed sleeve 11 is used to fix the rotating frame 7; an extrusion block 12, which is fixed to the fixed sleeve 11, and a first spring 13 is fixed between the fixed sleeve 11 and the mounting seat on the fixed frame 6.
[0022] The above solution provides a method for fixing the positions of the fixed frame 6 and the rotating frame 7 during normal movement; the width of the fixed frame 6 ( Figure 5 , the length in the front-to-back direction) is the same as the width of the straight rod on the rotating frame 7, so that the straight rod of the rotating frame 7 is aligned with the fixed frame 6, and the fixing sleeve 11 fixes the fixed frame 6 and the rotating frame 7 to prevent the fixed frame 6 and the rotating frame 7 from shaking; the extrusion block 12 is provided with an inclined surface, and after the inclined surface of the extrusion block 12 is squeezed by the street lamp, the extrusion block 12 moves forward.
[0023] Further, such as Figure 4-Figure 8As shown, the extrusion assembly includes: a sliding plate 14, which is slidably connected to the adjacent connecting frame 5; a limiting rod 15, which is fixed to the sliding plate 14, and the limiting rod 15 is slidably connected to the adjacent connecting frame 5. The rotating frame 7 is provided with circumferentially distributed limiting grooves 16, and the limiting rod 15 limits the rotating frame 7 through the limiting grooves 16. A first tension spring 17 is provided between the sliding plate 14 and the connecting frame 5; a directional assembly, which is arranged on the adjacent connecting frame 5 and is used to limit the rotation of the adjacent rotating frame 7.
[0024] Further, such as Figure 7 and Figure 8 As shown, the limiting groove 16 is an arc-shaped groove, and the depth of one end of the limiting groove 16 is smaller than the depth of the other end thereof, so that the limiting rod 15 can pass through the limiting groove 16 to push the rotating frame 7 to rotate.
[0025] The above scheme provides a method for squeezing the rotating frame 7 so that it rotates 90° each time, ensuring that the rotating frame 7 is aligned with the fixed frame 6 after rotation; in this embodiment, the sliding plate 14 has four limit rods 15, and the rotating frame 7 also has four limit grooves 16. Initially, the limit rods 15 are located in adjacent limit grooves 16, and the lower end of the limit rods 15 is a hemispherical head, which is used to facilitate its entry into the adjacent limit grooves 16. Initially, the first tension spring 17 is in a stretched state, which is used to provide the limit rod 15 with an extrusion force on the limit groove 16; in this embodiment, the depth of the arc groove on the limit groove 16 increases in the counterclockwise direction ( Figure 8 , looking from top to bottom).
[0026] Further, such as Figure 4-Figure 7 As shown, the orienting assembly includes: a limit frame 18, which is slidably connected to the adjacent connecting frame 5, and a second spring 19 is fixedly connected between the limit frame 18 and the connecting frame 5; a rectangular block 20, which is fixedly connected to the adjacent rotating frame 7, and the rectangular block 20 is rotatably connected to the connecting frame 5, and the limit frame 18 fixes the rotating frame 7 through the rectangular block 20.
[0027] The above scheme provides a way to limit the rotation angle of the rotating frame 7; after the limit frame 18 contacts the street lamp, the street lamp pushes the limit frame 18 to move backward, the limit frame 18 is composed of a round rod and a convex frame, the convex frame is used to fix the rectangular block 20, and the width of the convex frame on the limit frame 18 away from the adjustment frame 4 is greater than the width of the other side, so that after the limit frame 18 moves to the side close to the adjustment frame 4, the limit frame 18 releases the fixation of the rectangular block 20, and the second spring 19 is always in a compressed state, so that the second spring 19 squeezes the limit frame 18; the cross-section of the rectangular block 20 is square, so that the rectangular block 20 can fit with the adjacent surface of the limit frame 18 after rotation.
[0028] Workflow: When the bottom of the bridge needs to be inspected, the staff starts the mobile vehicle 1 and moves the device to the vicinity of the bridge area to be tested, and then starts the adjustment platform 2, which drives the support frame 3 and the parts on it to rotate. When the support frame 3 swings 90° counterclockwise, the adjustment platform 2 is closed ( Figure 1 , looking from top to bottom), at this time, the adjustment frame 4 and the parts thereon are moved to the outside of the bridge. After the angle of the support frame 3 is adjusted, the staff starts the first electric telescopic frame 8, the second electric telescopic frame 9 and the electric rotating shaft thereon to adjust the position of the camera 10, so that the camera 10 is close to the bridge to be inspected area. After the position of the camera 10 is adjusted, the staff closes the first electric telescopic frame 8, the second electric telescopic frame 9 and the electric rotating shaft thereon, and then starts the camera 10 to shoot the status of the bottom of the bridge.
[0029] After the above-mentioned camera 10 is started, the staff starts the mobile vehicle 1 to move to the right, the support frame 3 drives the connecting frame 5 to move to the right through the adjusting frame 4, the connecting frame 5 drives the rotating frame 7 and the parts thereon to move to the right, and the rotating frame 7 moves to the right through the fixed frame 6 and the parts thereon, so that the first electric telescopic frame 8 drives the camera 10 to move to the right through the second electric telescopic frame 9 and gradually shoots the bottom of the bridge.
[0030] As the moving vehicle 1 moves to the right, when it approaches the street lamp, taking the right rotating frame 7 and its parts as an example, as the moving vehicle 1 drives the parts thereon to continue to move, when the extrusion block 12 contacts the street lamp, the street lamp pushes the extrusion block 12 to move forward, so that the extrusion block 12 drives the fixed sleeve 11 to move and compress the adjacent first spring 13 and gradually releases the limit on the rotating frame 7.
[0031] In the process of the street lamp pushing the extrusion block 12, when the street lamp contacts the limit frame 18, the street lamp presses the limit frame 18 backward, so that the limit frame 18 moves and compresses the second spring 19. In this process, the narrower area at the rear of the limit frame 18 gradually separates from the rectangular block 20, thereby gradually releasing the fixation of the rectangular block 20. When the street lamp contacts the rotating frame 7, the limit frame 18 releases the fixation of the rectangular block 20, and the fixing sleeve 11 releases the fixation of the rotating frame 7. The street lamp squeezes the front of the rotating frame 7, so that the rotating frame 7 has a tendency to rotate clockwise ( Figure 1 , looking from top to bottom), the rotating frame 7 squeezes the limiting rod 15 through the limiting groove 16 thereon, so that the limiting rod 15 drives the sliding plate 14 to move upward and stretch the first tension spring 17, until the limiting groove 16 is separated from the limiting rod 15, and the limiting rod 15 releases the limit on the rotating frame 7, and the street lamp continues to squeeze the rotating frame 7 and makes it rotate clockwise, and the rotating frame 7 drives the rectangular block 20 to rotate synchronously. In this process, the limiting frame 18 and the squeezing block 12 are still squeezed by the street lamp and move away from each other.
[0032] As the mobile vehicle 1 continues to move to the right, the rotating frame 7 continues to rotate under the pressure of the street lamp. When the limit rod 15 is aligned with the next limit groove 16 on the rotating frame 7, the first tension spring 17 drives the limit rod 15 to move downward and enter the limit groove 16 through the sliding plate 14. During the separation of the rotating frame 7 on the right side from the adjacent fixed frame 6, the rotating frame 7 on the left side is always in contact with the adjacent fixed frame 6. When the rotating frame 7 on the left side contacts the street lamp and rotates, the rotating frame 7 on the right side contacts the adjacent fixed frame 6 again and completes the connection, thereby ensuring the continuity of detection of the device.
[0033] During the rotation of the rotating frame 7, when the squeezing force between the squeezing block 12 and the street lamp is reduced (i.e., the squeezing block 12 passes through the maximum diameter of the street lamp), the first spring 13 gradually drives the fixing sleeve 11 to move backward and reset (at this time, the rotating frame 7 is not separated from the street lamp). When the squeezing force between the limiting frame 18 and the street lamp is reduced, the second spring 19 pushes the limiting frame 18 to move forward and reset. As the rotating frame 7 continues to rotate, when the lower straight rod ( Figure 1 , looking from top to bottom) after contacting with the extrusion block 12, the rotating frame 7 pushes the extrusion block 12 to move forward, so that the lower straight rod on the rotating frame 7 enters the curved sliding groove of the fixed frame 6, and the limiting rod 15 assists the rotating frame 7 to rotate by squeezing the limiting groove 16. After the rotating frame 7 is separated from the street lamp, the rotating frame 7 completes the avoidance of the street lamp, and the limiting rod 15 squeezes the limiting groove 16 to adjust the angle of the rotating frame 7 so that the rotating frame 7 is aligned with the fixed frame 6.
[0034] In the process of the limit rod 15 squeezing the limit groove 16, when the limit rod 15 moves to the bottom of the adjacent limit groove 16, the sliding plate 14 stops moving and completes the reset, the rotating frame 7 and the rectangular block 20 both rotate 90° and stop moving, the fixed frame 6 is aligned with the adjacent straight rods on the rotating frame 7 again, and the first spring 13 pushes the fixed sleeve 11 to move backward again, so that the fixed sleeve 11 completes the fixation of the fixed frame 6 and the rotating frame 7, and the limit frame 18 is reset and fixes the rectangular block 20 again under the push of the second spring 19, and then other rotating frames 7 repeat the above process to avoid the street lamps, so that the device does not need to retract the detector to avoid the street lamps during the detection process, thereby saving the time used for avoidance and ensuring the detection efficiency of the device.
[0035] Further, such as Figure 3 , Figure 4 and Fig.10As shown, it also includes: an adjustment component, which is arranged on the adjustment frame 4 and is used to limit the position of the adjustment frame 4. The adjustment component includes: positioning wheels 21, which are distributed at intervals and are rotatably connected to the adjustment frame 4. The two positioning wheels 21 are used to position the position of the adjustment frame 4; a sliding block 22, which is arranged on the adjustment frame 4, the sliding block 22 is slidably connected to the support frame 3, an elastic member 23 is fixed between the sliding block 22 and the support frame 3, and the adjustment frame 4 is slidably connected to the support frame 3.
[0036] The above scheme provides a solution to the problem that the camera 10 is constantly shaking due to the deviation of the mobile vehicle 1, which affects the detection stability of the camera 10; when in use, the two positioning wheels 21 are respectively located on both sides of the bridge retaining wall, and are used to fix the position of the adjustment frame 4 so that the position of the adjustment frame 4 remains stable; in this embodiment, the sliding block 22 and the adjustment frame 4 are fixedly connected, and the adjustment frame 4 and the support frame 3 are slidably connected. The elastic member 23 is a spring, which is used to provide tension and thrust for the sliding block 22, so that the adjustment frame 4 can slide left and right relative to the support frame 3, and the elastic member 23 is used to keep the positions of the adjustment frame 4 and the support frame 3 stable, thereby reducing the probability of damage to the device.
[0037] Working process: In the above process of adjusting the position of the camera 10, the adjustment platform 2 drives the parts thereon to move upward first, so that the adjustment frame 4 drives the positioning wheel 21 to move to the top of the bridge retaining wall, and then repeats the above process to drive the support frame 3 to rotate 90°, so that the two positioning wheels 21 move to the front and rear sides of the bridge retaining wall respectively, and the adjustment platform 2 drives the parts thereon to move downward, so that the positioning wheel 21 moves downward and contacts the retaining wall, thereby fixing the position of the adjustment frame 4, and then repeats the above process to adjust the position of the camera 10.
[0038] As the mobile vehicle 1 moves to the right, when the mobile vehicle 1 shakes and deflects, taking the mobile vehicle 1 deflecting backward as an example, the mobile vehicle 1 drives the supporting frame 3 to move backward through the adjusting platform 2. At this time, the two positioning wheels 21 are in contact with the bridge retaining wall, so that the adjusting frame 4 does not move, thereby keeping the position of the adjusting frame 4 and the parts thereon stable, thereby improving the accuracy of the detection data of the camera 10.
[0039] Further, such as Fig.10 and Fig.11As shown, it also includes: a limiting component, which is arranged on the sliding block 22 and is used to connect the adjusting frame 4 and the sliding block 22. The limiting component includes: a positioning rod 24, which is slidably connected to the sliding block 22, the positioning rod 24 is in contact with the supporting frame 3, and a third spring 25 is fixedly connected between the positioning rod 24 and the sliding block 22. A positioning hole is provided on the adjusting frame 4, and the positioning rod 24 drives the adjusting frame 4 to move through the positioning hole. A guide groove 26 is provided in the supporting frame 3, and the guide groove 26 is used to limit the positioning rod 24. A circular hole connected to the guide groove 26 is opened on the side of the supporting frame 3 away from the adjusting platform 2, and the diameter of the circular hole is larger than the diameter of the positioning rod 24; a supporting component, which has multiple components, is arranged on the adjusting frame 4, and is used to fix the adjusting frame 4 after the supporting frame 3 and the adjusting frame 4 are separated.
[0040] The above scheme provides a way to release the connection between the sliding block 22 and the adjusting frame 4 when the mobile vehicle 1 deflects backwards too far and the support frame 3 and the adjusting frame 4 cannot buffer the deflection distance; the end of the positioning rod 24 close to the adjusting frame 4 is a hemispherical head, which is used to facilitate the positioning rod 24 to enter the positioning hole of the adjusting frame 4. Initially, the third spring 25 is in a compressed state, so that the third spring 25 always provides thrust for the positioning rod 24, and the circular hole on the guide groove 26 is used to release the squeezing of the positioning rod 24 by the support frame 3, so that the positioning rod 24 can move relative to the adjusting frame 4 and release and fix the adjusting frame 4.
[0041] Further, such as Figure 3 , Fig. 9 and Fig.10 As shown, the support assembly includes: a fixed rod 27, which has two, both of which are slidably connected to the adjustment frame 4; a lifting frame 28, which is slidably connected to the adjustment frame 4, and the two fixed rods 27 are slidably connected to the lifting frame 28. The fixed rod 27 is fixedly connected to a plurality of guide rods 29, and the adjusting frame 4 is provided with inclined grooves 30 with the same number as the guide rods 29. The inclined grooves 30 are used to limit adjacent guide rods 29, and a second tension spring 31 is fixedly connected between the lifting frame 28 and the adjustment frame 4.
[0042] Further, such as Fig.10 As shown, the distance between the two inclined slots 30 decreases as the distance between the two inclined slots 30 and the lifting frame 28 increases, so as to make the two fixing rods 27 approach each other.
[0043] Further, such as Figure 3 , Fig. 9 and Fig.10 As shown, the support assembly further includes: an L-shaped rod 32 fixedly connected to the lifting frame 28 , and the support frame 3 limits the height of the lifting frame 28 through the L-shaped rod 32 .
[0044] The above scheme provides a way to fix the position of the adjusting frame 4 and prevent it from falling after the adjusting frame 4 is separated from the supporting frame 3; a rubber block is arranged on the lower side of the fixing rod 27, and the rubber block is used to increase the contact area between the fixing rod 27 and the bridge retaining wall, and increase the stability between the fixing rod 27 and the bridge retaining wall. Initially, the fixing rod 27 is higher than the upper side of the bridge retaining wall, and the gap between the two fixing rods 27 is greater than the thickness of the bridge retaining wall, so that the two fixing rods 27 can move downward to clamp the bridge retaining wall in the middle; the lifting frame 28 is used to drive the two fixing rods 27 to move downward; the inclined groove 30 is used to make the fixing rods 27 gradually approach the bridge retaining wall during the downward movement; the second tension spring 31 is always in a stretched state, and is used to provide power for the lifting frame 28 to move downward; the L-shaped rod 32 is used to limit the position of the lifting frame 28, so that the lifting frame 28 cannot move downward when the adjusting frame 4 and the sliding block 22 are not separated. Initially, the lower side of the L-shaped rod 32 is in contact with the upper side of the supporting frame 3.
[0045] Working process: In the process of the above-mentioned mobile vehicle 1 deflecting backward, if the deflection distance of the mobile vehicle 1 is too large, as the support frame 3 moves backward relative to the adjustment frame 4 and stretches the elastic member 23, when the front side of the sliding block 22 contacts the support frame 3, the support frame 3 and the adjustment frame 4 cannot continue to move relative to each other, and the positioning rod 24 is aligned with the circular hole of the support frame 3. At this time, the support frame 3 loses the limit of the positioning rod 24. The positioning rod 24 moves upward under the action of the adjacent third spring 25 and enters the circular hole of the guide groove 26. As the positioning rod 24 moves upward, Movement, when the positioning rod 24 is separated from the positioning hole of the adjusting frame 4, the positioning rod 24 releases the fixation of the adjusting frame 4, so that the support frame 3 and the adjusting frame 4 can move relative to each other again. At this time, the positioning rod 24 is located in the circular hole of the guide groove 26 to limit the sliding block 22, and the elastic member 23 cannot be reset. The moving vehicle 1 continues to drive the support frame 3 to move backward relative to the adjusting frame 4 (in this process, the support frame 3 and the adjusting frame 4 and the parts thereon move to the right), until the support frame 3 is separated from the adjusting frame 4, and the adjusting frame 4 stops moving to the right.
[0046] After the above-mentioned support frame 3 and adjusting frame 4 are separated, the L-shaped rod 32 is separated from the support frame 3 and the limit on the lifting frame 28 is released, so that the second tension spring 31 drives the lifting frame 28 to move downward, and the lifting frame 28 drives the two fixing rods 27 and the parts thereon to move synchronously. In the process of the fixing rod 27 moving downward, the guide rod 29 moves along the adjacent inclined groove 30, so that the two fixing rods 27 approach each other and gradually approach the bridge retaining wall. When the rubber block on the fixing rod 27 contacts the bridge retaining wall, the fixing rod 27 drives the rubber block to continue to move and deform it, thereby increasing the contact area between the fixing rod 27 and the bridge retaining wall. Until the second tension spring 31 no longer contracts, the lifting frame 28 and the parts thereon stop moving, so that the two fixing rods 27 complete the fixation of the adjusting frame 4, preventing the moving vehicle 1 from deviating too much, the supporting frame 3 and the adjusting frame 4 cannot buffer the deviation of the moving vehicle 1, resulting in the device being rigidly pulled and deformed, causing the device to be damaged and unable to continue to be used.
[0047] After discovering that the supporting frame 3 and the adjusting frame 4 are separated, the staff controls the mobile vehicle 1 to move to the vicinity of the adjusting frame 4, and then pushes the lifting frame 28 upward to reset the fixing rod 27 and release the fixing of the adjusting frame 4. The staff removes the adjusting frame 4 and the parts thereon from the bridge retaining wall, and then moves the adjusting frame 4 and aligns the positioning hole thereon with the positioning rod 24. The staff presses the positioning rod 24 downward to make the positioning rod 24 compress the third spring 25 and enter the fixing hole of the adjusting frame 4 to complete the fixation again. When the positioning rod 24 is separated from the circular hole of the guide groove 26, the positioning rod 24 releases the limit on the sliding block 22, the elastic member 23 contracts and drives the sliding block 22 to reset. After the adjusting frame 4 is reset, the staff repeats the above process to place the adjusting frame 4 on the bridge retaining wall and continue to inspect the bottom of the bridge again.
[0048] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.
Claims
1. A bridge crack detection device, characterized in that: Included are: A mobile vehicle (1), wherein the mobile vehicle (1) is provided with an adjustment platform (2), the adjustment platform (2) is fixedly connected to a support frame (3), the support frame (3) is provided with an adjustment frame (4), the adjustment frame (4) is fixedly connected to a plurality of connecting frames (5), the connecting frame (5) is provided with a fixed frame (6), the connecting frame (5) is rotatably connected to a rotating frame (7), the fixed frame (6) is provided with a curved slide groove, the rotating frame (7) is provided with circumferentially distributed protruding columns, the curved slide groove of the fixed frame (6) is used to limit the adjacent protruding columns on the rotating frame (7), The rotating frame (7) is used to support the adjacent fixed frame (6); a plurality of the fixed frames (6) are commonly mounted with a first electric telescopic frame (8) via a mounting seat; a telescopic end of the first electric telescopic frame (8) is fixedly connected to a second electric telescopic frame (9); a telescopic end of the second electric telescopic frame (9) is fixedly connected to a camera (10); a positioning component for fixing the positions of the rotating frame (7) and the fixed frame (6) is provided on the fixed frame (6); and a squeezing component for limiting the rotation direction of the rotating frame (7) is provided on the connecting frame (5).
2. A bridge crack detection device according to claim 1, characterized in that: The positioning component includes: A fixing sleeve (11) is slidably connected to the adjacent fixing frame (6), and the fixing sleeve (11) is used to fix the rotating frame (7); The extrusion block (12) is fixedly connected to the fixing sleeve (11), and a first spring (13) is fixedly connected between the fixing sleeve (11) and a mounting seat on the fixing frame (6).
3. A bridge crack detection device according to claim 2, characterized in that: The extrusion assembly comprises: A sliding plate (14) slidably connected to an adjacent connecting frame (5); A limiting rod (15) is fixedly connected to the sliding plate (14); the limiting rod (15) is slidably connected to the adjacent connecting frame (5); the rotating frame (7) is provided with circumferentially distributed limiting grooves (16); the limiting rod (15) limits the rotating frame (7) through the limiting grooves (16); and a first tension spring (17) is provided between the sliding plate (14) and the connecting frame (5); A directional assembly is arranged on the adjacent connecting frame (5) and is used to limit the rotation of the adjacent rotating frame (7).
4. A bridge crack detection device according to claim 3, characterized in that: The limiting groove (16) is an arc-shaped groove, and the depth of one end of the limiting groove (16) is smaller than the depth of the other end thereof.
5. A bridge crack detection device according to claim 3, characterized in that: The directional component includes: A limiting frame (18) is slidably connected to the adjacent connecting frame (5), and a second spring (19) is fixedly connected between the limiting frame (18) and the connecting frame (5); The rectangular block (20) is fixedly connected to the adjacent rotating frame (7); the rectangular block (20) is rotatably connected to the connecting frame (5); and the limiting frame (18) fixes the rotating frame (7) via the rectangular block (20).
6. A bridge crack detection device according to claim 1, characterized in that: Also included are: An adjustment component is arranged on the adjustment frame (4) and is used to limit the position of the adjustment frame (4), the adjustment component comprising: Positioning wheels (21) are distributed at intervals and are rotatably connected to the adjustment frame (4); the two positioning wheels (21) are used to position the adjustment frame (4); A sliding block (22) is arranged on the adjustment frame (4), the sliding block (22) is slidably connected to the support frame (3), an elastic member (23) is fixedly connected between the sliding block (22) and the support frame (3), and the adjustment frame (4) is slidably connected to the support frame (3).
7. A bridge crack detection device according to claim 6, characterized in that: Also included are: A limit assembly is arranged on the sliding block (22) and is used to connect the adjustment frame (4) and the sliding block (22), wherein the limit assembly comprises: a positioning rod (24) slidably connected to the sliding block (22), the positioning rod (24) being in contact with the support frame (3), a third spring (25) being fixedly connected between the positioning rod (24) and the sliding block (22), a positioning hole being provided on the adjustment frame (4), the positioning rod (24) driving the adjustment frame (4) to move through the positioning hole, a guide groove (26) being provided in the support frame (3), the guide groove (26) being used to limit the positioning rod (24), a circular hole communicating with the guide groove (26) being provided on a side of the support frame (3) away from the adjustment platform (2), the diameter of the circular hole being larger than the diameter of the positioning rod (24); A plurality of support components are provided on the adjustment frame (4) and are used to fix the adjustment frame (4) after the support frame (3) and the adjustment frame (4) are separated.
8. A bridge crack detection device according to claim 7, characterized in that: The support assembly comprises: There are two fixing rods (27), both of which are slidably connected to the adjustment frame (4); A lifting frame (28) is slidably connected to the adjusting frame (4); the two fixing rods (27) are both slidably connected to the lifting frame (28); the fixing rods (27) are fixedly connected to a plurality of guide rods (29); the adjusting frame (4) is provided with inclined grooves (30) the same number as the guide rods (29); the inclined grooves (30) are used to limit the positions of adjacent guide rods (29); and a second tension spring (31) is fixedly connected between the lifting frame (28) and the adjusting frame (4).
9. A bridge crack detection device according to claim 8, characterized in that: The distance between the two inclined slots (30) decreases as the distance between the inclined slots (30) and the lifting frame (28) increases, so as to allow the two fixing rods (27) to approach each other.
10. A bridge crack detection device according to claim 8, characterized in that: The support assembly also includes: An L-shaped rod (32) is fixedly connected to the lifting frame (28), and the support frame (3) limits the height of the lifting frame (28) through the L-shaped rod (32).