Bridge deflection detection device and detection method thereof

Abstract

The invention relates to the field of detection devices, in particular to a bridge deflection detection device and a detection method thereof. The device comprises a mounting table, an auxiliary supporting mechanism, a drilling fixing mechanism and a drill bit, wherein the auxiliary supporting mechanism is arranged at the bottom of the mounting table; the drilling fixing mechanism is arranged at the axis of the mounting table; the drill bit is arranged at the bottom of the drilling fixing mechanism. Through the arrangement of the auxiliary supporting mechanism and the drilling fixing mechanism, the support and the supporting plate support the device according to the measured terrain, the stability of the device during measurement is guaranteed, meanwhile, the motor drives the drill bit to drill into the ground, pedals drive the steering plate to be inserted into the ground to enhance the fixing effect, and therefore the device can adapt to the complex gradient of the terrain where a bridge is located; it is ensured that the measurement datum plane is perpendicular to the gravity direction, installation errors are reduced, datum offset caused by ground subsidence or bridge deformation is compensated, meanwhile, ground vibration caused by strong wind and heavy vehicles can be resisted, and the dynamic deflection measurement precision is ensured.

Description

Technical Field

[0001] The present invention relates to the field of detection devices, and particularly to a bridge deflection detection device and a detection method thereof. Background Art

[0002] A bridge deflection detection device is an instrument for measuring deflection, mainly used for measuring the static and dynamic flexure of bridges, bridge acceptance inspection and appraisal, special bridge inspections such as military floating bridges and suspension bridges, deformation and vibration displacement monitoring of dams and docks, and deformation, vibration displacement, etc. of beams, columns, high-rise buildings, lifting machinery, drilling platforms, etc. with large-span structures.

[0003] Chinese Patent with Publication No. CN213516258U discloses a bridge deflection detection device, including a support base and a detection box. The upper surface of the support base is fixedly connected with a support column, the upper surface of the support column is fixedly connected with a backing plate, one side of the backing plate is movably connected with a turntable, the upper surface of the backing plate is movably connected with a rotating table, both sides of the upper surface of the rotating table are fixedly connected with detection boxes, one side surface of the detection box is fixedly connected with a box cover, the front and rear surfaces of the detection box are fixedly connected with operation boxes, the front surface of the detection box is fixedly connected with an adjustment knob, the inner side of the detection box is movably connected with a detection head, and the upper surface of the detection box is fixedly connected with a handle. The bridge deflection detection device of the present invention can adjust the height of the handle to facilitate the flexible rotation and use of the detection head, and can also manually rotate the detection device, and can change the orientation according to the needs during detection, and can be well controlled during rotation.

[0004] However, the above disclosed solution has the following deficiencies: The existing bridge deflection detection device cannot support the device according to the terrain of the detection location during use, and at the same time, when the device is simply placed on the ground, it cannot keep the device fixed in strong wind weather, thus affecting the deflection detection result of the device. Summary of the Invention

[0005] The object of the present invention is to address the problem in the background art that the device cannot be supported according to the terrain and stably installed, and to propose a bridge deflection detection device and a detection method thereof.

[0006] The technical solution of the present invention: A bridge deflection detection device includes an installation platform; and further includes:

[0007] An auxiliary support mechanism, which is arranged at the bottom of the installation platform and three are arranged around the installation platform in a ring shape, and is used to abut and support the detection device according to the terrain of the detection location;

[0008] A ground drilling and fixing mechanism, which is arranged at the center of the installation platform and is used to pierce the device into the ground of the detection location for fixation;

[0009] And a drill bit, which is arranged at the bottom of the ground drilling and fixing mechanism. A spiral fixing piece is arranged on the outer side of the drill bit. The drill bit drills into the ground driven by the ground drilling and fixing mechanism. At this time, the spiral fixing piece further penetrates into the ground to strengthen the connection between the spiral fixing piece and the ground.

[0010] Preferably, it further includes an adjusting mechanism, which includes a circular ring slide rail, a rotating disc, a fixing column and a lifting platform;

[0011] The circular ring slide rail is arranged on the top of the installation platform. The rotating disc is rotatably arranged on the circular ring slide rail. The fixing column is arranged on the top of the rotating disc. The lifting platform is slidably arranged on the outer side of the fixing column. The rotating disc is provided with positioning holes, and a plurality of positioning holes are arranged annularly around the rotating disc. A plug rod is clamped on the rotating disc. A first spring is arranged on the outer side of the plug rod. A connecting rod is arranged on the top of the first spring. The inner side of the connecting rod is slidably connected with the outer side of the plug rod.

[0012] Preferably, a connecting piece is arranged on the top of the lifting platform. A fixing shaft is rotatably arranged on the inner side of the connecting piece. A detector is arranged at the end of the fixing shaft. A detector is also arranged on the side surface of the connecting piece.

[0013] Preferably, the auxiliary support mechanism includes a support assembly and an installation assembly;

[0014] The installation assembly is arranged at the bottom of the installation platform and is used for installing the support assembly according to the terrain to adjust the angle;

[0015] The support assembly is arranged on the installation assembly and is used for supporting the device.

[0016] Preferably, the installation assembly includes a fixing plate, a second telescopic tube, a second spring and a connecting plate;

[0017] The fixing plate is arranged at the bottom of the installation platform. The second telescopic tube is arranged on the side surface of the fixing plate. The second spring is arranged on the outer side of the second telescopic tube. The connecting plate is arranged at the end of the second telescopic tube away from the fixing plate. A clamping block is arranged on the side of the connecting plate away from the second telescopic tube. An adjusting disc is clamped on the outer side of the clamping block. A rotating rod is rotatably arranged on the side surface of the connecting plate. The end of the rotating rod away from the connecting plate is rotatably arranged with a pressing rod.

[0018] Preferably, the support assembly includes a support plate and a bracket;

[0019] The bracket is arranged at the bottom of the adjusting disc. The support plate is rotatably arranged at the bottom of the bracket.

[0020] Preferably, the ground drilling and fixing mechanism includes a motor, an installation frame, a rotating shaft and a threaded rod;

[0021] The motor is arranged at the bottom of the connecting platform, the rotating shaft is arranged at the output end of the motor, the threaded rod is slidably arranged inside the rotating shaft, a connecting shaft is arranged at the top of the threaded rod, the mounting bracket is threadedly arranged outside the threaded rod, the top of the mounting bracket is connected to the bottom of the connecting platform, a plug tube is arranged at the bottom of the threaded rod, a pedal is slidably arranged on the plug tube, a reinforcing plate is rotatably arranged at the bottom of the pedal, two reinforcing plates are symmetrically arranged with respect to the pedal, a turning block is arranged inside the plug tube, both sides of the turning block are arranged as inclined surfaces, and the bottom of the plug tube is connected to the top of the drill bit.

[0022] A detection method for a bridge deflection detection device includes the following steps:

[0023] S1. Move the device to the detection location, then press the pressing rod. The pressing rod drives the block to disengage from the adjusting disk. Then, turn the adjusting disk to a suitable supporting angle and release the pressing rod. The block is re-locked into the adjusting disk under the action of the second spring for fixation;

[0024] S2. Start the motor. The motor drives the drill bit to drill into the ground. Then, step on the pedal downward with the foot. The pedal drives the reinforcing plate to insert into the ground on both sides;

[0025] S3. After installation, pull the insertion rod to make it disengage from the rotating disk. When it is turned to a suitable detection angle, release the insertion rod to fix the angle. Then, start the lifting platform to adjust the detection height;

[0026] S4. Turn on the detector to measure the deflection of the bridge. The measured deflection is displayed as an image on the display screen, thus completing the measurement;

[0027] S5. After the detection is completed, disassemble the bracket, and then lower the lifting platform to the bottom to bundle up the device.

[0028] Compared with the prior art, the present invention has the following beneficial technical effects:

[0029] 1. Through the setting of the auxiliary support mechanism and the ground drilling and fixing mechanism, the bracket and the support plate support the device according to the measured terrain, ensuring the stability of the device during measurement. At the same time, the motor drives the drill bit to drill into the ground, and stepping on the pedal drives the turning plate to insert into the ground to enhance the fixing effect. In this way, it can adapt to the complex slopes of the terrain where the bridge is located, ensure that the measurement reference plane is perpendicular to the direction of gravity, reduce installation errors, compensate for the reference offset caused by ground settlement or bridge deformation, and at the same time can resist the ground vibration caused by strong winds and the passing of heavy vehicles, ensuring the accuracy of dynamic deflection measurement.

[0030] 2. By setting up the adjustment mechanism, after rotating the rotating disk to any suitable angle for measurement and fixing it, the measurement direction of the device can be freely adjusted, and the measurement points can be accurately positioned in all directions. This is especially suitable for multi-angle deformation monitoring of complex structures such as arched bridges and cable-stayed bridges. Moreover, the three-dimensional point cloud modeling of the bridge can be completed during the lifting process, realizing the visualization of the spatial distribution of deflection deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0032] Figure 2 is Figure 1 a partial structural schematic diagram;

[0033] Figure 3 It is a schematic structural diagram of the adjustment mechanism;

[0034] Figure 4 It is a schematic structural diagram of the auxiliary support mechanism;

[0035] Figure 5 is Figure 4 an enlarged schematic diagram of A in

[0036] Figure 6 It is a schematic structural diagram of the ground drilling and fixing mechanism.

[0037] Reference numerals: 1, mounting table; 201, circular ring slide rail; 202, rotating disk; 203, fixed column; 204, lifting table; 205, insertion rod; 206, spring 1; 207, connecting rod; 301, support plate; 302, support; 303, adjustment disk; 304, clamping block; 305, connecting plate; 306, rotating rod; 307, pressing rod; 308, telescopic tube 2; 309, spring 2; 310, fixing plate; 401, motor; 402, mounting frame; 403, rotating shaft; 404, threaded rod; 404, connecting shaft; 406, insertion tube; 407, pedal; 408, reinforcement plate; 409, steering block; 410, drill bit; 5, connecting piece; 6, fixed shaft; 7, detector; 8, display screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Embodiment 1

[0039] As Figures 1-5 shown, a bridge deflection detection device proposed by the present invention includes a mounting table 1, an auxiliary support mechanism, a ground drilling and fixing mechanism, and a drill bit 410:

[0040] The auxiliary support mechanism is arranged at the bottom of the mounting table 1, and three are arranged annularly around the mounting table 1 for abutting and supporting the detection device according to the terrain of the detection location;

[0041] The ground-drilling fixing mechanism is arranged at the axis center of the mounting platform 1, and is used to drive the device into the ground at the detection location for fixing;

[0042] The drill bit 410 is arranged at the bottom of the ground-drilling fixing mechanism, and a spiral fixing plate is arranged on the outer side of the drill bit 410. The drill bit 410 drills into the ground driven by the ground-drilling fixing mechanism, and at this time, the spiral fixing plate further penetrates into the ground to strengthen the connection between the spiral fixing plate and the ground.

[0043] The adjusting mechanism includes a circular slide rail 201, a rotating disk 202, a fixed column 203 and a lifting platform 204; the circular slide rail 201 is arranged on the top of the mounting platform 1, the rotating disk 202 is rotatably arranged on the circular slide rail 201, the fixed column 203 is arranged on the top of the rotating disk 202, and the lifting platform 204 is slidably arranged on the outside of the fixed column 203, the rotating disk 202 is provided with a positioning hole, and a plurality of positioning holes are arranged in an annular manner around the rotating disk 202, and a plug rod 205 is clamped on the rotating disk 202. A spring 206 is provided on the outer side of the insertion rod 205, and a connecting rod 207 is provided on the top of the spring 206. The inner side of the connecting rod 207 and the outer side of the insertion rod 205 are slidably connected. The insertion rod 205 is pulled to separate it from the rotating disk 202. At this time, the rotating disk 202 can rotate. When it rotates to an angle suitable for detection, the insertion rod 205 is released. The insertion rod 205 is stuck into the positioning hole at this position under the action of the spring 206, thereby fixing the angle, and then the lifting platform 204 is started to adjust the detection height.

[0044] A connecting member 5 is provided on the top of the lifting platform 204, a fixed shaft 6 is rotatably provided on the inner side of the connecting member 5, a detector 7 is provided on the end of the fixed shaft 6, and a detector 7 is provided on the side of the connecting member 5. The fixed shaft 6 drives the detector 7 to rotate so as to adjust the angle of the detector 7 to perform a bridge deflection test, and the display screen 8 can display 8 deflection images.

[0045] The auxiliary support mechanism includes a support component and a mounting component; the mounting component is arranged at the bottom of the mounting table 1 and is used for mounting the support component at an adjustable angle according to the terrain; the support component is arranged on the mounting component and is used for supporting the device. The mounting component includes a fixing plate 310, a second telescopic tube 308, a second spring 309 and a connecting plate 305; the fixing plate 310 is arranged at the bottom of the mounting table 1, the second telescopic tube 308 is arranged on the side of the fixing plate 310, the second spring 309 is arranged outside the second telescopic tube 308, the connecting plate 305 is arranged at one end of the second telescopic tube 308 away from the fixing plate 310, a clamping block 304 is arranged on one side of the connecting plate 305 away from the second telescopic tube 308, an adjusting disc 303 is clamped outside the clamping block 304, a rotating rod 306 is rotatably arranged on the side of the connecting plate 305, a pressing rod 307 is rotatably arranged at one end of the rotating rod 306 away from the connecting plate 305, a jack is arranged on the adjusting disc 303, and a plurality of jacks are symmetrically arranged around the adjusting disc 303. The clamping block 304 and the adjusting disc 303 can be connected in cooperation for installation and fixation. The support component includes a support plate 301 and a bracket 302; the bracket 302 is arranged at the bottom of the adjusting disc 303, the support plate 301 is rotatably arranged at the bottom of the bracket 302. The bracket 302 is installed according to the terrain of the detection location. Press the pressing rod 307 to drive the rotating rod 306 to rotate, and the rotating rod 306 drives the connecting plate 305 to move outward synchronously, so as to drive the clamping block 304 to disengage from the bracket 302. Then, after adjusting to an appropriate angle, release the pressing rod 307, and the pressing rod 307 drives the clamping block 304 to snap into the adjusting disc 303 at this position under the action of the second spring 309, so that the three brackets 302 support the device according to the terrain.

[0046] Embodiment 2

[0047] As Figure 6 shown, a bridge deflection detection device and a detection method proposed by the present invention. Compared with Embodiment 1, the structure of the ground drilling and fixing mechanism is introduced in detail in this embodiment.

[0048] The ground drilling fixing mechanism includes a motor 401, a mounting frame 402, a rotating shaft 403 and a threaded rod 404; the motor 401 is arranged at the bottom of the connecting platform, the rotating shaft 403 is arranged at the output end of the motor 401, the threaded rod 404 is slidably arranged on the inner side of the rotating shaft 403, the top of the threaded rod 404 is provided with a connecting shaft 404, the mounting frame 402 is threadedly arranged on the outer side of the threaded rod 404, the top of the mounting frame 402 is connected to the bottom of the connecting platform, the bottom of the threaded rod 404 is provided with a plug 406, the plug 406 is slidably provided with a pedal 407, the bottom of the pedal 407 is rotatably provided with a reinforcing plate 408, two reinforcing plates 408 are symmetrically arranged about the pedal 407, the inner side of the plug 406 is provided with a steering block 409, and the steering Both sides of block 409 are set as inclined surfaces, and the bottom of the insert 406 is connected to the top of the drill bit 410. The motor 401 is started, and the motor 401 drives the rotating shaft 403 to rotate. The rotating shaft 403 drives the threaded rod 404 to rotate through the connecting shaft 404. When the threaded rod 404 rotates, it moves under the action of the mounting frame 402, thereby driving the drill bit 410 to move downward and drill into the ground. After drilling into the ground, the pedal 407 is pressed downward with the foot, and the pedal 407 drives the reinforcement plate 408 to move downward. When passing through the steering block 409, the reinforcement plate 408 deflects and is inserted into the ground on both sides, thereby further strengthening the fixing effect of the device. When the detection device needs to be moved, the pedal 407 is lifted upward, and the pedal 407 drives the reinforcement plate 408 to leave the ground, thereby canceling the fixing effect.

[0049] Embodiment 3

[0050] The present invention proposes a bridge deflection detection device detection method, the specific steps are:

[0051] S1. Move the device to the testing location, and then press the pressing rod 307, which drives the block 304 to separate from the adjusting disk 303. Then, rotate the adjusting disk 303 to a suitable supporting angle and release the pressing rod 307. The block 304 is re-engaged in the adjusting disk 303 under the action of the spring 2 309 to be fixed.

[0052] S2, start the motor 401, the motor 401 drives the drill bit 410 to drill into the ground, then step on the pedal 407 downwards, the pedal 407 drives the reinforcement plate 408 to be inserted into the ground on both sides;

[0053] S3, after the installation is completed, pull the rod 205 to separate it from the rotating disk 202, and when it is rotated to an angle suitable for detection, release the rod 205 to fix the angle, and then start the lifting platform 204 to adjust the detection height;

[0054] S4, turning on the detector 7 to measure the deflection of the bridge, and displaying the measured deflection on the display screen 8 as an image, thereby completing the measurement;

[0055] After the detection is completed, remove the support 302, and then lower the lifting platform 204 to the bottom to bundle up the device.

[0056] In summary, when the present invention is used, install the support 302 according to the terrain of the detection location, press the pressing rod 307 to drive the rotating rod 306 to rotate, the rotating rod 306 drives the connecting plate 305 to move outward synchronously, so as to drive the clamping block 304 to disengage from the support 302, and then loosen the pressing rod 307 after adjusting to an appropriate angle. The pressing rod 307 drives the clamping block 304 to snap into the adjusting disc 303 at this position under the action of the second spring 309, so that the three supports 302 support the device according to the terrain. Then start the motor 401, the motor 401 drives the rotating shaft 403 to rotate, the rotating shaft 403 drives the threaded rod 404 to rotate through the connecting shaft 404, and the threaded rod 404 moves under the action of the mounting frame 402 when rotating, so as to drive the drill bit 410 to move downward and drill into the ground. After drilling into the ground, step on the pedal 407 with your foot, the pedal 407 drives the reinforcing plate 408 to move downward, and the reinforcing plate 408 deflects and inserts into the ground on both sides when passing through the turning block 409, so as to further strengthen the fixing effect of the device. After the installation is completed, pull the insertion rod 205 to make it disengage from the rotating disc 202, and when it rotates to an appropriate angle for detection, release the insertion rod 205. The insertion rod 205 snaps into the positioning hole at this position under the action of the first spring 206, so as to fix the angle. Then start the lifting platform 204 to adjust the detection height. After the adjustment is completed, measure the bridge deflection. After recording the results, lift the pedal 407 upward, and the pedal 407 drives the reinforcing plate 408 to disengage from the ground to cancel the fixing effect, and control the motor 401 to reverse to loosen the device and then take away the device.

[0057] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art to which the present invention pertains.

Claims

1. A bridge deflection detection device, comprising a mounting table (1); characterized in that, It also includes: An auxiliary support mechanism, which is arranged at the bottom of the installation table (1) and there are three arranged annularly around the installation table (1) for abutting and supporting the detection device according to the terrain of the detection location; A ground drilling and fixing mechanism, which is arranged at the axis center of the installation table (1) for drilling the device into the ground at the detection location for fixing; And a drill bit (410), which is arranged at the bottom of the ground drilling and fixing mechanism. A spiral fixing piece is arranged on the outer side of the drill bit (410). The drill bit (410) drills into the ground driven by the ground drilling and fixing mechanism. At this time, the spiral fixing piece further penetrates into the ground to strengthen the connection between the spiral fixing piece and the ground.

2. The bridge deflection detection device according to claim 1, wherein, It also includes an adjustment mechanism, which includes an annular slide rail (201), a rotating disk (202), a fixed column (203) and a lifting platform (204); The annular slide rail (201) is arranged on the top of the installation table (1). The rotating disk (202) is rotatably arranged on the annular slide rail (201). The fixed column (203) is arranged on the top of the rotating disk (202). The lifting platform (204) is slidably arranged on the outer side of the fixed column (203). There are a plurality of positioning holes arranged annularly around the rotating disk (202) on the rotating disk (202). A plug rod (205) is clamped on the rotating disk (202). A first spring (206) is arranged on the outer side of the plug rod (205). A connecting rod (207) is arranged at the top of the first spring (206). The inner side of the connecting rod (207) is slidably connected to the outer side of the plug rod (205).

3. The bridge deflection detection device according to claim 2, wherein A connecting piece (5) is arranged on the top of the lifting platform (204). A fixed shaft (6) is rotatably arranged on the inner side of the connecting piece (5). A detector (7) is arranged at the end of the fixed shaft (6). A detector (7) is arranged on the side of the connecting piece (5).

4. The bridge deflection detection device according to claim 1, characterized in that, The auxiliary support mechanism includes a support assembly and an installation assembly; The installation assembly is arranged at the bottom of the installation table (1) for installing the support assembly according to the terrain for angle adjustment; The support assembly is arranged on the installation assembly for supporting the device.

5. The bridge deflection detection device according to claim 4, characterized in that, The installation assembly includes a fixing plate (310), a second telescopic tube (308), a second spring (309) and a connecting plate (305); The fixing plate (310) is arranged at the bottom of the installation table (1). The second telescopic tube (308) is arranged on the side of the fixing plate (310). The second spring (309) is arranged on the outer side of the second telescopic tube (308). The connecting plate (305) is arranged at the end of the second telescopic tube (308) away from the fixing plate (310). A clamping block (304) is arranged on the side of the connecting plate (305) away from the second telescopic tube (308). An adjusting disk (303) is clamped on the outer side of the clamping block (304). A rotating rod (306) is rotatably arranged on the side of the connecting plate (305). A pressing rod (307) is rotatably arranged at the end of the rotating rod (306) away from the connecting plate (305).

6. The bridge deflection detection device according to claim 5, characterized in that, The support assembly includes a support plate (301) and a bracket (302); The bracket (302) is arranged at the bottom of the adjusting disk (303). The support plate (301) is rotatably arranged at the bottom of the bracket (302).

7. The bridge deflection detection device according to claim 1, characterized in that The ground-penetrating fixing mechanism includes a motor (401), a mounting bracket (402), a rotating shaft (403) and a threaded rod (404); The motor (401) is arranged at the bottom of the connecting platform. The rotating shaft (403) is arranged at the output end of the motor (401). The threaded rod (404) is slidably arranged inside the rotating shaft (403). A connecting shaft (404) is arranged at the top of the threaded rod (404). The mounting bracket (402) is threadedly arranged outside the threaded rod (404). The top of the mounting bracket (402) is connected to the bottom of the connecting platform. A socket pipe (406) is arranged at the bottom of the threaded rod (404). A pedal (407) is slidably arranged on the socket pipe (406). A reinforcing plate (408) is rotatably arranged at the bottom of the pedal (407). Two reinforcing plates (408) are symmetrically arranged with respect to the pedal (407). A turning block (409) is arranged inside the socket pipe (406). Both sides of the turning block (409) are arranged as inclined surfaces. The bottom of the socket pipe (406) is connected to the top of the drill bit (410).

8. A detection method for the bridge deflection detection device according to any one of claims 1-7, characterized in that, It includes the following steps: S1. Move the device to the detection location, then press the pressing rod (307). The pressing rod (307) drives the block (304) to disengage from the adjusting disk (303). Then rotate the adjusting disk (303) to a suitable supporting angle and release the pressing rod (307). The block (304) is re-carded into the adjusting disk (303) under the action of the second spring (309) for fixation; S2. Start the motor (401). The motor (401) drives the drill bit (410) to drill into the ground. Then step on the pedal (407) with the foot. The pedal (407) drives the reinforcing plate (408) to insert into the ground on both sides; S3. After installation, pull the insertion rod (205) to disengage it from the rotating disk (202). When it is rotated to a suitable detection angle, release the insertion rod (205) to fix the angle. Then start the lifting platform (204) to adjust the detection height; S4. Turn on the detector (7) to measure the deflection of the bridge. The measured deflection is displayed as an image on the display (8) screen, thus completing the measurement; S5. After the detection is completed, disassemble the bracket (302), and then lower the lifting platform (204) to the bottom to bundle up the device.

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