Bridge detection support

Abstract

The invention relates to the technical field of bridge detection, in particular to a bridge detection support which comprises a fixing frame, a detection supporting frame is arranged on the fixing frame, a clamping assembly is further arranged on the fixing frame, the fixing frame is clamped on a bridge guardrail through the clamping assembly, a weight box is further arranged on the fixing frame, and the weight box is filled with liquid. The weight of the weight box can be changed and can be changed according to the elongation of the detection supporting frame, so that the fixing frame is prevented from being subjected to large bending moment, clamping of the fixing frame on the bridge guardrail is more balanced, and the influence on the bridge guardrail is reduced; the clamping assembly comprises a fixed clamping frame and a movable clamping frame, a connecting disc is hinged to the fixed clamping frame and the movable clamping frame, the connecting disc is rotationally provided with a clamping disc, and the clamping disc is provided with a first set of rolling wheels and a second set of rolling wheels so that stress points on the surface of the bridge guardrail can change continuously, and therefore deformation of the surface of the bridge guardrail is avoided.

Description

Technical Field

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

[0002] Bridge inspection brackets are usually used to support and stabilize inspection equipment to ensure the safety of equipment and personnel during the inspection process when performing structural inspection, maintenance or repair of bridges.

[0003] For example, Chinese patent CN221029606U discloses a bridge detection device, which facilitates adjusting the distance between the L-shaped support frame and the side of the guardrail by rotating the threaded rod, limits the fixed frame above the guardrail, and facilitates adjusting the distance between the cross bar and the bottom surface of the bridge deck through the action of the electric push rod. The auxiliary cross bar is conveniently moved under the bridge deck through the action of the universal wheel, and the position of the camera under the bridge deck is conveniently adjusted by the action of the camera sliding on the cross bar.

[0004] However, the fixing frame in the above solution will be subjected to a large bending moment, especially the clamping part, which may be subjected to an unbalanced bending moment, resulting in fatigue cracks or deformation. Summary of the invention

[0005] Based on this, it is necessary to provide a bracket for bridge inspection to address the problem that the current fixing frame is subjected to a large bending moment, which may cause fatigue cracks or deformation of the bridge guardrail.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A bracket for bridge inspection, comprising:

[0008] A fixed frame, wherein a detection support frame is arranged on the fixed frame, and the length of the detection support frame is positively correlated with the width of the bridge;

[0009] A clamping assembly, wherein the clamping assembly is capable of clamping the fixing frame on the bridge guardrail;

[0010] A counterweight box is fixedly arranged on the fixing frame, the counterweight box is filled with liquid, and the amount of liquid in the counterweight box is positively correlated with the length of the detection support frame.

[0011] Furthermore, the clamping assembly includes a movable clamping frame and a fixed clamping frame, the movable clamping frame and the fixed clamping frame are slidably connected, the movable clamping frame can move away from or approach the fixed clamping frame, and the end surfaces of the movable clamping frame and the fixed clamping frame that are close to each other are respectively hingedly provided with connecting plates, the connecting plates can rotate left and right around the hinge position, and a clamping plate is rotatably provided on the connecting plate, and the clamping plate can clamp the bridge guardrail.

[0012] Furthermore, a first group of rollers and a second group of rollers are arranged on an end surface of the clamping plate close to the bridge guardrail, the first group of rollers includes two first rollers whose axes coincide with each other, the second group of rollers includes two second rollers whose axes coincide with each other, the axes of the two first rollers and the axes of the two second rollers are perpendicular to each other and both pass through the center of the clamping plate, and the two first rollers and the two second rollers are both in rolling contact with the surface of the bridge guardrail;

[0013] The two clamping discs can rotate around their own axes and the rotation directions of the two clamping discs are opposite.

[0014] Furthermore, the two first rollers of the first group of rollers can be deflected 90° so that the axes of the two first rollers are parallel to the axes of the two second rollers. When the axes of the two first rollers are parallel to the axes of the two second rollers, the two clamping plates can move horizontally on the bridge guardrail.

[0015] Furthermore, an adjustment component is provided on an end surface of the clamping plate away from the bridge guardrail, and the adjustment component can adjust the deflection of the two first rollers of the first roller group.

[0016] Furthermore, the adjustment component includes a rotating knob, a first limit block and a second limit block, the rotating knob is connected to the first roller, and rotation of the rotating knob can drive the first roller to deflect, the first limit block and the second limit block are both fixedly arranged on the clamping disk, and the first limit block and the second limit block are respectively located on the upper and lower end surfaces of the rotating knob and away from the center position of the knob.

[0017] Furthermore, a driving assembly is provided on the connecting disk, and the driving assembly can drive the clamping disk to rotate.

[0018] Furthermore, the driving assembly includes a driving motor and a ring gear, the ring gear is coaxially and fixedly arranged on an end of the clamping plate away from the bridge guardrail, the driving motor is fixedly arranged on the connecting plate, the rotating shaft of the driving motor is engaged with the ring gear, the driving motor drives the ring gear to rotate, and the ring gear drives the clamping plate to rotate.

[0019] Furthermore, the detection support frame includes a detection frame and a plurality of support rods, the plurality of support rods are movably connected to connect the detection frame and the fixed frame, and the plurality of support rods cooperate with each other to send the detection frame to the bottom surface of the bridge.

[0020] Furthermore, the detection frame is provided with a distance detector and a camera.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges a counterweight box on the fixing frame, and the weight of the counterweight box can be changed according to the elongation of the detection support frame, thereby preventing the fixing frame from being subjected to a large bending moment, thereby making the fixing frame clamp the bridge guardrail more balanced and reducing the impact on the bridge guardrail.

[0023] The present invention hinges the connection plate on the fixed clamping frame and the movable clamping frame, so that the clamping plate on the connection plate can clamp bridge guardrails with different inclination angles, thereby improving the scope of application.

[0024] The present invention arranges a first group of rollers and a second group of rollers on the clamping plate, so that the points where the bridge guardrail is subjected to force can be changed, thereby avoiding constant force points on the bridge surface, thereby further avoiding structural deformation of the bridge guardrail surface.

[0025] The present invention can enable the fixing frame to switch back and forth between the initial state and the moving state by arranging the first group of rollers capable of deflecting 90 degrees, thereby avoiding frequent installation and disassembly of the fixing frame and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a bracket for bridge inspection provided by one embodiment of the present invention;

[0027] Figure 2 A structural schematic diagram of the working state of a bridge inspection bracket provided by an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A partial enlarged view of part A of the working state of the bridge inspection bracket provided in one embodiment;

[0029] Figure 4 for Figure 2 A partial enlarged view of part B of the working state of the bridge inspection bracket provided in one embodiment;

[0030] Figure 5 for Figure 2 A partial enlarged view of part C of the working state of the bridge inspection bracket provided in one embodiment;

[0031] Figure 6 for Figure 2 A partial enlarged view of part D of the working state of the bridge inspection bracket provided in the first embodiment;

[0032] Figure 7 for Figure 2 A left side view of the working state of the bridge inspection bracket provided in one embodiment;

[0033] Figure 8 for Figure 7A partial enlarged view of part E of the working state of the bridge inspection bracket provided in one embodiment;

[0034] Fig. 9 A schematic structural diagram of a non-working state of a bridge inspection bracket provided by an embodiment of the present invention;

[0035] Fig.10 A schematic structural diagram of a clamping plate of a bridge inspection bracket provided in one embodiment of the present invention;

[0036] Fig.11 for Fig.10 A right side view of a clamping plate of a bridge inspection bracket provided in one embodiment;

[0037] Fig.12 for Fig.11 A cross-sectional view of a clamping plate of a bridge inspection bracket provided in an embodiment along XX;

[0038] Fig.13 for Fig.10 A right side view of the clamping plate of the bridge inspection bracket provided in one embodiment when in a moving state.

[0039] in:

[0040] 100, fixed frame; 110, counterweight box; 120, fixed clamping frame; 121, rotating rod; 122, adjusting plate; 123, guide rod; 130, movable clamping frame; 140, hinged protrusion; 150, connecting plate; 151, hinged rod; 152, driving motor; 160, clamping plate; 161, gear ring; 162, first roller; 163, second roller; 170, rotating knob; 180, first limit block; 190, second limit block;

[0041] 200, detection frame; 210, distance detector; 220, camera; 230, first support rod; 231, first hinged plate; 232, first hydraulic cylinder; 240, second support rod; 241, second hinged plate; 242, first sliding plate; 243, second hydraulic cylinder; 250, third support rod; 251, third hinged plate; 252, third hydraulic cylinder; 253, second sliding plate; 260, rotating disk;

[0042] 300. Bridge bottom surface; 310. Bridge guardrail. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Refer to the following Figure 1-Figure 13 To describe a bridge inspection bracket provided by the present invention.

[0047] A bracket for bridge inspection is suitable for bridge inspection, comprising a fixing frame 100 and an inspection support frame. The fixing frame 100 is provided with a clamping assembly so that the fixing frame 100 can be clamped on the bridge guardrail 310. The inspection support frame is connected to the fixing frame 100. The inspection support frame can be unfolded and extended. After the inspection support frame is unfolded and extended, it will enter the bottom surface 300 of the bridge to detect the condition of the bottom surface 300 of the bridge. The unfolded and extended length of the inspection support frame is positively correlated with the width of the bridge. That is to say, the wider the bridge, the longer the unfolded and extended length of the inspection support frame, and the narrower the bridge, the shorter the unfolded and extended length of the inspection support frame, thereby adapting to bridges of different widths.

[0048] When the length of the detection support frame in the prior art is extended too long, the fixing frame 100 will be subjected to a large bending moment, especially the bridge guardrail 310 clamped by the clamping assembly. The bridge guardrail 310 may be subjected to an unbalanced bending moment, resulting in fatigue cracks or deformation. Therefore, the present invention is provided with a counterweight box 110 on one side of the fixing frame 100. The position of the counterweight box 110 is arranged opposite to the detection support frame, that is, the counterweight box 110 is arranged on an end face of the fixing frame 100 away from the detection support frame, and a liquid infusion pipeline is connected to the side wall of the counterweight box 110 (not shown in the figure). ), the infusion pipeline can transport liquid to the counterweight box 110. It should be noted that the transported liquid can be water or other liquids, and the amount of transported liquid is positively correlated with the length of the extension of the detection support frame. That is to say, when the length of the extension of the detection support frame is longer, the amount of liquid in the counterweight box 110 is increased to balance the bending moment of the fixed frame 100. The balanced bending moment of the fixed frame 100 indicates that the bending moment of the bridge guardrail 310 is also close to balanced, thereby balancing the center of gravity of the fixed frame 100 to reduce the unbalanced bending moment of the bridge guardrail 310.

[0049] Specifically, the clamping assembly in this embodiment includes a movable clamping frame 130 and a fixed clamping frame 120, and the fixed clamping frame 120 and the movable clamping frame 130 are slidably connected. Figure 7 and Figure 8 As shown, the movable clamping frame 130 can move away from or closer to the fixed clamping frame 120. In order to facilitate the sliding connection between the two, a rotating rod 121 is spirally connected to one end of the fixed clamping frame 120 close to the movable clamping frame 130, and the other end of the rotating rod 121 passes through the movable clamping frame 130 and is coaxially fixedly connected to an adjusting disk 122. When the adjusting disk 122 is pushed to rotate, the movable clamping frame 130 can be driven to move closer to or away from the fixed clamping frame 120. At the same time, in order to ensure the relative horizontal movement of the movable clamping frame 130 and the fixed clamping frame 120, as shown in FIG. Figure 2 As shown, two guide rods 123 are slidably provided on both sides of the rotating rod 121, one end of the two guide rods 123 is fixed on the movable clamping frame 130, and the other end of the two guide rods 123 is slidably inserted on the fixed clamping frame 120 so that the movable clamping frame 130 can move horizontally.

[0050] like Figure 8 and Fig.10As shown, a connecting plate 150 is hingedly arranged on the end surfaces of the fixed clamping frame 120 and the movable clamping frame 130 that are close to each other, and the connecting plate 150 can rotate left and right around the hinge position. In order to facilitate the hinge connection between the connecting plate 150 and the fixed clamping frame 120 and the movable clamping frame 130, a hinge rod 151 is fixedly arranged at the center position of the connecting plate 150, and the hinge rod 151 is arranged horizontally. At the same time, a hinge protrusion 140 is arranged on the end surfaces of the fixed clamping frame 120 and the movable clamping frame 130 that are close to each other, and the hinge rod 151 is rotatably connected to the hinge protrusion 140 to realize the hinge connection of the connecting plate 150, and a clamping plate 160 is coaxially and rotatably arranged on the connecting plate 150.

[0051] It should be noted that if Figure 8 As shown, since the two connecting plates 150 can rotate left and right around the hinge position, the two clamping plates 160 on the two connecting plates 150 can adapt to the inclined surface of the bridge guardrail 310 when clamping the bridge guardrail 310, so that the clamping plates 160 can clamp the inclined surfaces of different bridge guardrails 310, thereby increasing the scope of application of the bridge inspection bracket.

[0052] In a further embodiment, to ensure that the force on the surface of the bridge guardrail 310 is uniform, as Fig.10 and Fig.11 As shown, a first group of rollers and a second group of rollers are arranged on the end surfaces of the clamping plate 160 that are close to each other, the first group of rollers includes two first rollers 162 with overlapping axes, the second group of rollers includes two second rollers 163 with overlapping axes, the axes of the two first rollers 162 and the axes of the two second rollers 163 are perpendicular to each other and both pass through the center of the clamping plate 160, the two first rollers 162 and the two second rollers 163 are in rolling contact with the surface of the bridge guardrail 310, and the moving trajectory of the first roller 162 and the second roller 163 is circular, specifically, it moves in a circular trajectory with the clamping plate 160 as the center and the distance from the first roller 162 to the center as the radius, so that the force point on the surface of the bridge guardrail 310 moves with the movement of the two first rollers 162 and the two second rollers 163, so as to avoid the force point on the surface of the bridge guardrail 310 being constant, thereby further avoiding the structural deformation of the surface of the bridge guardrail 310. In order to ensure that the fixing frame 100 is stationary relative to the bridge guardrail 310, the two clamping plates 160 can rotate in opposite directions around their own axes, that is, the two clamping plates 160 rotate in opposite directions. If the two clamping plates 160 rotate in the same direction, the fixing frame 100 will be offset as a whole, while setting the two clamping plates 160 to rotate in opposite directions can make the forces generated by the two offset each other, so that the fixing frame 100 will not deflect, so that it is firmly clamped on the bridge guardrail 310.

[0053] In a further embodiment, the two first rollers 162 of the first group of rollers of the present invention can be deflected 90° so that the axes of the two first rollers 162 and the axes of the two second rollers 163 are parallel to each other. Specifically, when the fixing frame 100 is clamped on the bridge guardrail 310 by the two clamping plates 160 and the length of the detection support frame is extended to start the detection, the axes of the two first rollers 162 and the two second rollers 163 are perpendicular to each other and pass through the center of the clamping plate 160. The state at this time is the initial state, and when the detection support frame is completed after the detection, it needs to be moved. position, the first roller 162 is deflected 90° to change the rolling direction of the first roller 162, that is, the axes of the two first rollers 162 and the two second rollers 163 are parallel to each other, and the axes are perpendicular to the horizontal plane. The state at this time is a moving state. The two clamping plates 160 can be moved along the horizontal direction of the bridge guardrail 310 under the action of external force to change the position of the fixing frame 100, and then the position of the detection support frame is changed, so that the detection support frame can detect other areas of the bottom surface 300 of the bridge.

[0054] It should be noted that, through the above-mentioned structural setting, the fixing frame 100 can be switched back and forth between the initial state and the moving state, thereby avoiding frequent installation and removal of the fixing frame 100 and improving the detection efficiency.

[0055] Specifically, in order to realize the function of adjusting the deflection of the first roller 162, an adjustment component is provided on one end surface of the two clamping plates 160 away from the bridge guardrail 310, and the adjustment component can adjust the deflection of the first roller 162, such as Fig.10 As shown, the adjustment assembly includes a rotating knob 170, a first limit block 180 and a second limit block 190. The rotating knob 170 is rotatably arranged on the clamping plate 160, and one end of the rotating knob 170 is connected to the first roller 162. When the rotating knob 170 is rotated, it can drive the first roller 162 to deflect. When the rotating knob 170 is rotated 90°, the first roller 162 deflects 90°, and the first limit block 180 and the second limit block 190 are both fixedly arranged on the clamping plate 160. The first limit The positioning block 180 and the second limiting block 190 are respectively located at the upper and lower ends of the rotating knob 170 and away from the center position of the rotating knob 170, so that when the rotating knob 170 is rotated 90°, it is restricted by the first limiting block 180 and the second limiting block 190 to prevent the rotating knob 170 from rotating excessively. The setting of the first limiting block 180 and the second limiting block 190 makes the rotation limit of the rotating knob 170 90°, so that the maximum deflection angle of the axes of the two first rollers 162 is 90°.

[0056] Specifically, in order to realize the rotation of the clamping disk 160 around its own axis on the connecting disk 150, a driving assembly is provided on the connecting disk 150, and the driving assembly can drive the clamping disk 160 to rotate. The driving assembly includes a gear ring 161 and a driving motor 152. The gear ring 161 is coaxially and fixedly connected to an end surface of the clamping disk 160 away from the bridge guardrail 310, such as Fig.10 As shown, the drive motor 152 is arranged on an end face of the connecting disk 150 away from the bridge guardrail 310, and the rotating shaft of the drive motor 152 is meshed with the ring gear 161. When the drive motor 152 drives the rotating shaft to rotate, the clamping disk 160 is driven to rotate through the ring gear 161. The two connecting disks 150 are both provided with drive motors 152, but the rotation directions of the drive motors 152 on the two are opposite, so the rotation directions of the two clamping disks 160 driven by the two drive motors 152 are opposite, and the rotation speeds of the two drive motors 152 are the same and the rotation speed is slower.

[0057] In a further embodiment, the detection support frame of the present invention includes a detection frame 200 and multiple support rods. The multiple support rods are movably connected to connect the detection frame 200 and the fixed frame 100. The multiple support rods cooperate with each other to send the detection frame 200 to the bottom surface 300 of the bridge. The detection frame 200 is provided with a distance detector 210 and a camera 220. The detection frame 200 takes pictures and records on the bottom surface 300 of the bridge and moves to a designated position through the distance detector 210.

[0058] Specifically, for the convenience of describing the plurality of support rods in this embodiment, they are named as the first support rod 230, the second support rod 240 and the third support rod 250 respectively. The first support rod 230 is hinged to the fixing frame 100, specifically, hinged by two first hinge plates 231, such as Figure 2 and Figure 3 As shown, a first hydraulic cylinder 232 is provided at the hinged position of the first support rod 230 and the fixing frame 100, and the two ends of the first hydraulic cylinder 232 are respectively connected to the fixing frame 100 and the first support rod 230. When the first hydraulic cylinder 232 is extended or retracted, it can drive the first support rod 230 to start rotating at the upper end of the fixing frame 100 with the hinged position as the center, thereby adjusting the angle of the first support rod 230. The second support rod 240 slides and is hinged on the first support rod 230, specifically through two first sliding plates 242, as shown in FIG. Figure 2 and Figure 4As shown, the two first sliding plates 242 are slidably arranged on the first support rod 230 and the second support rod 240 respectively, and the two first sliding plates 242 move along the axial direction of the first support rod 230 and the second support rod 240 respectively, so as to adjust the position of the second support rod 240 and the first support rod 230, the first sliding plate 242 on the first support rod 230 is slidably connected to the first support rod 230, the first support rod 230 is provided with a rack distributed along its axial direction (not shown in the figure), the first sliding plate 242 on the first support rod 230 is fixedly connected with a motor (not shown in the figure), the motor shaft is meshed with the rack, and the motor rotates so that the first sliding plate 242 on the first support rod 230 moves along the axial direction of the first support rod 230;

[0059] Similarly, the first sliding plate 242 on the second support rod 240 is connected to the second support rod 240, and the second support rod 240 is also provided with a rack distributed along its axial direction. The first sliding plate 242 on the second support rod 240 is also fixedly connected with a motor (not shown in the figure), and the motor shaft is meshed with the rack. The motor rotates so that the first sliding plate 242 on the second support rod 240 moves along the axial direction of the second support rod 240. Through the two sliding first sliding plates 242, the hinge position of the first support rod 230 and the second support rod 240 can be adjusted, and the two first sliding plates 242 are hinged, and the second hydraulic cylinder 243 is provided at the hinge position. The two ends of the second hydraulic cylinder 243 are respectively hinged on the two first sliding plates 242. When the second hydraulic cylinder 243 is extended and retracted, the angle between the second support rod 240 and the first support rod 230 can be adjusted, thereby making the first support rod 230 and the second support rod 240 more flexible.

[0060] More specifically, Figure 2 and Figure 5 As shown, the third support rod 250 is hinged and slidably connected to the second support rod 240, and a second hinged plate 241 is fixedly connected to the end of the second support rod 240, and a second sliding plate 253 is slidably arranged on the third support rod 250, and the second sliding plate 253 can slide along the axial direction of the third support rod 250, and a rack distributed along its axial direction is arranged on the third support rod 250, and a motor (not shown in the figure) is arranged on the second sliding plate 253, and the rotating shaft of the motor is engaged with the rack, and the rotation of the motor drives the second sliding plate 253 to slide on the third support rod 250, so that the end of the second support rod 240 slides on the third support rod 250, and the second sliding plate 253 and the second hinged plate 241 are hinged to each other and the hinge position is also connected to the third hydraulic cylinder 252, and the third hydraulic cylinder 252 can adjust the angle between the second support rod 240 and the third support rod 250 when it is extended and retracted.

[0061] like Figure 2 and Figure 6As shown, one end of the third support rod 250 is rotatably connected to the middle position of the length of the detection frame 200, so that the detection frame 200 can rotate on the third support rod 250. Specifically, a rotating disk 260 is rotatably connected to the middle position of the length of the detection frame 200, and a third hinged plate 251 is fixed to the end of the third support rod 250. The third hinged plate 251 is hinged to the rotating disk 260, and a fourth hydraulic cylinder (not shown in the figure) is arranged at the hinge position. The angle of the detection frame 200 can be adjusted when the fourth hydraulic cylinder is extended or retracted.

[0062] More specifically, the camera 220 and the distance detector 210 are respectively disposed at two ends of the detection frame 200 , and when the detection frame 200 extends into the bottom surface 300 of the bridge, the situation of the bottom surface 300 of the bridge can be recorded.

[0063] The specific working process of a bridge inspection bracket provided by the present invention is described in combination with the above embodiments:

[0064] Status when not working:

[0065] The state of the bridge inspection bracket when not in use is as follows Fig. 9 As shown, the first support rod 230 and the fixed frame 100 are coaxial, the second support rod 240 moves to the upper end of the first support rod 230, and the first sliding plate 242 on the second support rod 240 slides to the end of the second support rod 240, the angle between the two first sliding plates 242 on the first support rod 230 and the second support rod 240 is 90°, so that the first support rod 230 and the second support rod 240 are perpendicular, and the second sliding plate 253 on the third support rod 250 slides to the end, at this time the second support rod 240 and the third support rod 250 are perpendicular, the first support rod 230 and the third support rod 250 are parallel to each other, and the third hinged plate 251 on the other end of the third support rod 250 is perpendicular to the rotating disk 260 on the detection frame 200, so that the third support rod 250 and the detection frame 200 are parallel.

[0066] Working status:

[0067] The adjusting disk 122 on the fixed clamping frame 120 is turned to drive the rotating rod 121 to rotate and thereby adjust the distance between the movable clamping frame 130 and the fixed clamping frame 120. The two clamping disks 160 are clamped on the surface of the bridge guardrail 310. The axes of the two first rollers 162 and the two second rollers 163 on the two clamping disks 160 are perpendicular to each other and pass through the center of the clamping disk 160. The two first rollers 162 and the two second rollers 163 are in rolling contact with the surface of the bridge guardrail 310. At this time, the driving motors 152 on the two connecting disks 150 drive the two clamping disks 160 to rotate in opposite directions at a relatively slow speed, thereby continuously changing the force points on the surface of the bridge guardrail 310 to avoid deformation of the surface structure of the bridge guardrail.

[0068] First, the fourth hydraulic cylinder (not shown in the figure) is driven to adjust the detection frame 200 and the third support rod 250 to a state perpendicular to each other, and then the first hydraulic cylinder 232 is driven to extend, so that the first support rod 230 is rotated 90° on the fixed frame 100, and then the position of the first sliding plate 242 on the first support rod 230 and the second support rod 240 is adjusted, and the position of the second sliding plate 253 on the third support rod 250 is adjusted at the same time, and then the position of the third support rod 250 is adjusted, so that the third support rod 250 gradually extends into the bottom surface 300 of the bridge.

[0069] At this time, the positions of the first support rod 230, the second support rod 240 and the third support rod 250 are as follows: Figure 2 In the state shown, the first support rod 230 is perpendicular to the fixing frame 100, and the second support rod 240 is perpendicular to the first support rod 230 and parallel to the fixing frame 100. The second support rod 240 moves horizontally on the first support rod 230, and liquid is transported into the counterweight box 110 while the second support rod 240 moves. The amount of liquid transported is proportional to the amount of movement of the second support rod 240 on the first support rod 230. That is, the farther the second support rod 240 is from the fixing frame 100, the more liquid needs to be transported. The more liquid is transported in the counterweight box 110, the third support rod 250 is perpendicular to the second support rod 240 and the third support rod 250 is parallel to the first support rod 230, the detection frame 200 is perpendicular to the third support rod 250, and the distance detector 210 and the camera 220 on the detection frame 200 can record the data of the bottom surface 300 of the bridge. Specifically, the third support rod 250 slides horizontally on the end of the second support rod 240, so that the detection frame 200 can gradually extend from one side of the bridge to the bottom surface 300 of the bridge, forming a bridge structure as shown in FIG. Figure 1 In the state shown, during the movement, the distance detector 210 and the camera 220 on the detection frame 200 can record the data of the bottom surface 300 of the bridge.

[0070] When you need to move the positioning frame:

[0071] When the two first rollers 162 and the two second rollers 163 on the clamping plate 160 form a Fig.13 After the state shown, the driving motor 152 is stopped first, and then the rotating knob 170 is driven to rotate, and the rotating knob 170 drives the two first rollers 162 to deflect 90° to form the following Fig.13 In the state shown, applying a horizontal moving force to the fixing frame 100 can make the two clamping plates 160 move horizontally on the surface of the bridge guardrail 310, thereby adjusting the position of the fixing frame 100. After the position adjustment of the fixing frame 100 is completed, the knob 170 is reset to restore to the state shown in FIG. Fig.11 In the state shown, the driving motor 152 is started again and the aforementioned steps are repeated to detect a new area.

[0072] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A bracket for bridge inspection, characterized in that: include: A fixed frame, wherein a detection support frame is arranged on the fixed frame, and the length of the detection support frame is positively correlated with the width of the bridge; A clamping assembly, wherein the clamping assembly is capable of clamping the fixing frame on the bridge guardrail; A counterweight box is fixedly arranged on the fixing frame, the counterweight box is filled with liquid, and the amount of liquid in the counterweight box is positively correlated with the length of the detection support frame.

2. The bridge inspection bracket according to claim 1, characterized in that: The clamping assembly includes a movable clamping frame and a fixed clamping frame, the movable clamping frame and the fixed clamping frame are slidably connected, the movable clamping frame can move away from or approach the fixed clamping frame, the end surfaces of the movable clamping frame and the fixed clamping frame close to each other are respectively hingedly provided with connecting plates, the connecting plates can rotate left and right around the hinge position, and a clamping plate is rotatably provided on the connecting plate, and the clamping plate can clamp the bridge guardrail.

3. The bridge inspection bracket according to claim 2, characterized in that: A first group of rollers and a second group of rollers are arranged on an end surface of the clamping plate close to the bridge guardrail, the first group of rollers includes two first rollers with coincident axes, the second group of rollers includes two second rollers with coincident axes, the axes of the two first rollers and the axes of the two second rollers are perpendicular to each other and both pass through the center of the clamping plate, and the two first rollers and the two second rollers are in rolling contact with the surface of the bridge guardrail; The two clamping discs can rotate around their own axes and the rotation directions of the two clamping discs are opposite.

4. The bridge inspection bracket according to claim 3, characterized in that: The two first rollers of the first group of rollers can be deflected 90° so that the axes of the two first rollers are parallel to the axes of the two second rollers. When the axes of the two first rollers are parallel to the axes of the two second rollers, the two clamping plates can move horizontally on the bridge guardrail.

5. The bridge inspection bracket according to claim 4, characterized in that: An adjustment component is arranged on an end surface of the clamping plate away from the bridge guardrail, and the adjustment component can adjust the deflection of two first rollers of the first roller group.

6. The bridge inspection bracket according to claim 5, characterized in that: The adjustment component includes a rotating knob, a first limit block and a second limit block. The rotating knob is connected to the first roller. Rotating the rotating knob can drive the first roller to deflect. The first limit block and the second limit block are both fixedly arranged on the clamping disk. The first limit block and the second limit block are respectively located on the upper and lower end surfaces of the rotating knob and away from the center position of the knob.

7. The bridge inspection bracket according to claim 3, characterized in that: The connecting disk is provided with a driving assembly, and the driving assembly can drive the clamping disk to rotate.

8. The bridge inspection bracket according to claim 7, characterized in that: The driving assembly includes a driving motor and a gear ring. The gear ring is coaxial and fixedly arranged on an end of the clamping plate away from the bridge guardrail. The driving motor is fixedly arranged on the connecting plate. The rotating shaft of the driving motor is meshed with the gear ring. The driving motor drives the gear ring to rotate, and the gear ring drives the clamping plate to rotate.

9. The bridge inspection bracket according to claim 1, characterized in that: The detection support frame includes a detection frame and a plurality of support rods, the plurality of support rods are movably connected to connect the detection frame and the fixed frame, and the plurality of support rods cooperate with each other to send the detection frame to the bottom surface of the bridge.

10. The bridge inspection bracket according to claim 9, characterized in that: The detection frame is provided with a distance detector and a camera.

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