A bridge detection device with a counterweight mechanism

Abstract

The present invention relates to the field of bridge detection, and in particular to a bridge detection device with a counterweight mechanism. It comprises a moving component, a limit component is installed at one end of the moving component, a counterweight component is installed on one side wall of the moving component, a detection component is installed on the side wall of the moving component away from the counterweight component, and the detection component comprises a second connecting plate and an elastic plate; the present invention performs distance detection through a distance sensor, and when convex or concave conditions appear on the bridge surface, the elastic plate is preliminarily adjusted according to the value transmitted by the distance sensor, and then the elastic plate is driven to adjust the bending angle, thereby improving the accuracy of the value; when damage occurs on the bridge surface, the installation plate is driven to move to the top of the damaged opening, and then the inflatable bag structure is activated to perform filling and limit detection on the damaged opening, thereby improving the detection effect of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge detection, and in particular relates to a bridge detection device with a counterweight mechanism. Background Art

[0002] A bridge generally refers to a structure built across rivers, lakes, and seas to enable vehicles, pedestrians, etc. to pass smoothly.

[0003] After searching, in the prior art, Chinese Patent Publication No.: CN217231968U, Publication Date: 2022-08-19, discloses an underwater foundation detection device for bridge piers and abutments, including a water pump, a turbine connected to a water outlet of the water pump, and a transmission shaft that passes through the turbine and is coaxially connected to the turbine. A propeller is coaxially provided at one end of the transmission shaft, and a cleaning brush is coaxially provided at the other end of the transmission shaft. A collecting ring for absorbing mud is provided between the cleaning brush and the turbine. The above embodiment solves the problem that in the daily foundation detection process of traditional bridge piers and abutments, the detection results are easily misjudged due to silt adsorption.

[0004] However, the device still has the following defects:

[0005] The inability to detect and locate bumps, depressions and damage on the bridge surface in a timely manner makes the detection limited, thereby reducing the accuracy of the device's detection and the device's working effect. Summary of the invention

[0006] In view of the above problems, the present invention provides a bridge detection device with a counterweight mechanism, comprising a moving component, a limit component is installed at one end of the moving component, a counterweight component is installed on one side wall of the moving component, and a detection component is installed on a side wall of the moving component away from the counterweight component;

[0007] The detection assembly includes a second connecting plate and an elastic plate, a distance sensor is arranged directly below the second connecting plate, and a fourth electric push rod is installed at the bottom edge of the second connecting plate;

[0008] A mounting plate is installed on the output end of the fourth electric push rod, a mounting rod is installed at the bottom of the mounting plate, and an inflatable bag structure is sleeved on the outer wall of the mounting rod;

[0009] The distance is detected by the distance sensor. When there are bumps or depressions on the bridge surface, the elastic plate is preliminarily adjusted according to the value transmitted by the distance sensor.

[0010] Furthermore, the moving component includes a support plate, a first electric push rod is installed on the top of the support plate, a support block is installed on the output end of the first electric push rod, two groups of first connecting rods are symmetrically installed on one side wall of the support block, and a seventh electric push rod is installed on one side wall of the support plate.

[0011] Furthermore, a first connecting plate is installed on the output end of the seventh electric push rod, two sets of universal wheel structures are symmetrically installed at the bottom edge of the first connecting plate, and a fixing plate is installed at the top center of the first connecting plate.

[0012] Furthermore, the counterweight assembly includes a first mounting plate, one end of which is mounted on a side wall of the fixed plate, and a first electric slide is mounted on a side wall of the first mounting plate away from the fixed plate.

[0013] Furthermore, a second electric push rod is transmission-connected to the output end of the first electric slide, a first motor is installed on the output end of the second electric push rod, and a fixed disk is transmission-connected to the output end of the first motor.

[0014] Furthermore, a slide groove is provided at the bottom of the fixed plate, and two groups of mounting blocks are symmetrically installed on the inner wall of the fixed plate. A group of second connecting rods are installed on one side wall of each group of mounting blocks, and a group of stop blocks are installed on one end of each group of second connecting rods away from the mounting blocks.

[0015] Furthermore, a group of compression springs are movably sleeved on the outer wall of each group of the second connecting rods, one end of each group of the compression springs is installed on a side wall of the mounting block, and the other end of each group of the compression springs is installed with a group of sliding rectangular plates, each group of the sliding rectangular plates is slidably connected to the outer wall of the second connecting rod, a connecting block is connected between the bottoms of the two groups of sliding rectangular plates, and a counterweight structure is installed at the bottom of the connecting block.

[0016] Furthermore, the detection component also includes a second mounting plate, one end of the second mounting plate is mounted on a side wall of the fixed plate, a second electric slide is mounted on one side wall of the second mounting plate, a third electric push rod is transmission-connected to the output end of the second electric slide, a second motor is mounted on the output end of the third electric push rod, the top of the second connecting plate is transmission-connected to the output end of the second motor, an image collecting structure is mounted at the bottom center of the second connecting plate, two groups of fixed rods are symmetrically mounted on the bottom of the image collecting structure, and the distance sensor is mounted on the bottom of the fixed rod.

[0017] Furthermore, an anti-wear pad layer is installed on the outer wall of the inflatable bag structure, an air pump is installed on the outer wall of the mounting rod, and the output end of the air pump is connected to the input end of the inflatable bag structure.

[0018] Furthermore, a third connecting plate is installed on the bottom of a side wall of the second connecting plate away from the fourth electric push rod, a fifth electric push rod is installed on the bottom of the third connecting plate, a fourth connecting plate is installed on the output end of the fifth electric push rod, a third mounting plate is installed on a side wall of the fourth connecting plate, a sixth electric push rod is installed on the bottom of the third mounting plate, a fourth mounting plate is installed on the output end of the sixth electric push rod, and the elastic plate is installed on a side wall of the fourth mounting plate.

[0019] The beneficial effects of the present invention are:

[0020] 1. Distance detection is performed through distance sensors. When convexities or concavities appear on the bridge surface, the elastic plate is preliminarily adjusted according to the value transmitted by the distance sensor, and then the elastic plate is driven to adjust the bending angle, thereby improving the accuracy of the value. When damage appears on the bridge surface, the installation plate is driven to move to the top of the damaged opening, and then the inflatable bag structure is started to perform filling limit detection on the damaged opening, thereby improving the detection effect of the device.

[0021] 2. When the bridge surface is tilted, the counterweight structure will be tilted. When the counterweight structure is tilted, it drives the two sets of sliding rectangular plates to slide in the slide groove, and plays the role of compressing and stretching the compression springs respectively during the sliding process. Therefore, when the compression springs feel the pressure of stretching and compression respectively, they start to rebound and reset. During the tilting process, the tilting state of the bridge surface is judged according to the sliding area of ​​the counterweight structure in the slide groove and the compression degree of the compression spring, thereby improving the horizontal detection effect of the bridge surface.

[0022] 3. In order to prevent the device from collapsing during subsequent work, the first electric slide can be started to drive the counterweight structure to move horizontally away from the fixed plate when the counterweight structure tilts, so as to balance the angle and force of the tilt and expand the controllable range of the counterweight structure. Subsequently, in order to increase the counterweight force of the counterweight structure, the second electric push rod is started to drive the counterweight structure to move up and down, thereby increasing the counterweight range of the device and improving the stability of the device.

[0023] 4. The working state of the clamping block can be freely selected according to the work location. When there is a fixable building, the two groups of clamping blocks are located at both ends of the fixable building. Then the third motor is started to drive the threaded rod to rotate, and the threaded rod drives the sliding block to slide in the sliding cavity, thereby driving the two groups of clamping blocks to fix and limit the fixable building, thereby improving the stability of the subsequent detection device.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It shows a schematic structural diagram of a bridge detection device according to an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the structure of a mobile component according to an embodiment of the present invention is shown;

[0028] Figure 3 A top cross-sectional view of a position limiting assembly according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic structural diagram of a counterweight assembly according to an embodiment of the present invention is shown;

[0030] Figure 5 A schematic cross-sectional view of a fixing plate according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the structure of a detection component according to an embodiment of the present invention is shown;

[0032] Figure 7 A schematic diagram of the structure of the installation disk according to an embodiment of the present invention is shown;

[0033] Figure 8 A schematic structural diagram of a third connecting plate according to an embodiment of the present invention is shown.

[0034] In the figure: 1. moving assembly; 101. support plate; 102. first electric push rod; 103. support block; 104. first connecting rod; 105. first connecting plate; 106. universal wheel structure; 107. fixed plate; 108. seventh electric push rod; 2. limit assembly; 201. rectangular plate; 202. threaded rod; 203. sliding cavity; 204. sliding block; 205. clamping block; 206. third motor; 3. counterweight assembly; 301. first mounting plate; 302. first electric slide; 303. second electric push rod; 304. first motor; 305. fixed plate; 306. slide groove; 307. mounting block; 308. second connecting rod; 309. stopper; 310. compression spring; 311. sliding rectangular plate; 312. 2. Connecting block; 313. Counterweight structure; 4. Detection assembly; 401. Second mounting plate; 402. Second electric slide; 403. Third electric push rod; 404. Second motor; 405. Second connecting plate; 406. Image collection structure; 407. Fixing rod; 408. Distance sensor; 409. Fourth electric push rod; 410. Mounting plate; 411. Mounting rod; 412. Inflatable bag structure; 413. Anti-wear pad; 414. Air pump; 415. Third connecting plate; 416. Fifth electric push rod; 417. Fourth connecting plate; 418. Socket; 419. Sliding rod; 420. Scale structure; 421. Elastic plate; 422. Third mounting plate; 423. Sixth electric push rod; 424. Fourth mounting plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The embodiment of the present invention provides a bridge detection device with a counterweight mechanism. It includes a moving component 1, exemplarily, such as Figure 1 As shown, a limit assembly 2 is installed at one end of the moving assembly 1, a counterweight assembly 3 is installed on one side wall of the moving assembly 1, and a detection assembly 4 is installed on a side wall of the moving assembly 1 away from the counterweight assembly 3.

[0037] For example, Figure 2As shown, the moving component 1 includes a support plate 101, a first electric push rod 102 is installed on the top of the support plate 101, a support block 103 is installed on the output end of the first electric push rod 102, two groups of first connecting rods 104 are symmetrically installed on one side wall of the support block 103, a seventh electric push rod 108 is installed on one side wall of the support plate 101, a first connecting plate 105 is installed on the output end of the seventh electric push rod 108, two groups of universal wheel structures 106 are symmetrically installed at the bottom edge of the first connecting plate 105, and a fixing plate 107 is installed at the top center of the first connecting plate 105.

[0038] For example, Figure 3 As shown, the limit assembly 2 includes a rectangular plate 201, one end of the rectangular plate 201 is mounted on one end of the first connecting rod 104, a sliding cavity 203 is opened on a side wall of the rectangular plate 201 away from the first connecting rod 104, two groups of threaded rods 202 are rotatably connected in the sliding cavity 203, a partition block is connected between the two groups of the threaded rods 202, the thread directions of the two groups of the threaded rods 202 are opposite, and the central axes are located on the same straight line, one end of one group of the threaded rods 202 is rotatably connected to an inner wall of one side of the rectangular plate 201, a third motor 206 is installed on an inner wall of one side of the rectangular plate 201, the output end of the third motor 206 is transmission-connected to one group of the threaded rods 202, each group of the threaded rods 202 is threadedly connected to a group of sliding blocks 204, each group of the sliding blocks 204 is slidably connected in the sliding cavity 203, and a group of clamping blocks 205 are installed on one side wall of each group of the sliding blocks 204.

[0039] Before the bridge detection device starts working, the support plate 101 is first moved to the specified position, and then the first electric push rod 102 is started to push the support block 103 to the specified height, and the working state of the clamping block 205 can be freely selected according to the work location. When there is a fixable building, the two groups of clamping blocks 205 are located at both ends of the fixable building, and then the third motor 206 is started to drive the threaded rod 202 to rotate, and the threaded rod 202 drives the sliding block 204 to slide in the sliding cavity 203, and then drives the two groups of clamping blocks 205 to fix and limit the fixable building, so as to improve the stability of the subsequent detection device, and then start to detect the bridge surface.

[0040] For example, Figure 4 and Figure 5As shown, the counterweight assembly 3 includes a first mounting plate 301, one end of which is mounted on a side wall of a fixed plate 107, a first electric slide 302 is mounted on a side wall of the first mounting plate 301 away from the fixed plate 107, a second electric push rod 303 is transmission-connected to the output end of the first electric slide 302, a first motor 304 is mounted on the output end of the second electric push rod 303, a fixed disk 305 is transmission-connected to the output end of the first motor 304, a slide groove 306 is provided at the bottom of the fixed disk 305, two groups of mounting blocks 307 are symmetrically mounted on the inner wall of the fixed disk 305, and each group of the mounting blocks 307 has a A group of second connecting rods 308 are installed on one side wall, and a group of blocking blocks 309 are installed on the end of each group of second connecting rods 308 away from the mounting block 307. A group of compression springs 310 are movably sleeved on the outer wall of each group of second connecting rods 308, and one end of each group of compression springs 310 is installed on one side wall of the mounting block 307. A group of sliding rectangular plates 311 are installed on the other end of each group of compression springs 310. Each group of sliding rectangular plates 311 is slidably connected to the outer wall of the second connecting rod 308. A connecting block 312 is connected between the bottoms of the two groups of sliding rectangular plates 311, and a counterweight structure 313 is installed at the bottom of the connecting block 312.

[0041] Start the seventh electric push rod 108 to push the first connecting plate 105 forward. During the pushing process, the counterweight structure 313 is used to perform a horizontal detection. When the bridge surface is tilted, the first connecting plate 105 will be offset, and the counterweight structure 313 will be driven to tilt. When tilted, the counterweight structure 313 drives the two sets of sliding rectangular plates 311 to slide in the slide groove 306, and plays the role of compressing and stretching the compression spring 310 respectively during the sliding process. Therefore, when the compression spring 310 feels the tension and compression pressure respectively, it starts to rebound and reset. During the tilting process, the tilt state of the bridge surface is judged according to the sliding area of ​​the counterweight structure 313 in the slide groove 306 and the compression degree of the compression spring 310.

[0042] To prevent the device from collapsing during subsequent work, the first electric slide 302 can be started when the counterweight structure 313 tilts to drive the counterweight structure 313 to move horizontally away from the fixed plate 107, so as to balance the angle and force of the tilt and expand the controllable range of the counterweight structure 313. Subsequently, in order to increase the counterweight force of the counterweight structure 313, the second electric push rod 303 is started to drive the counterweight structure 313 to move up and down, thereby increasing the counterweight range of the device and improving the stability of the device.

[0043] For example, Figure 6 , Figure 7 and Figure 8As shown, the detection component 4 includes a second mounting plate 401, one end of the second mounting plate 401 is mounted on a side wall of the fixed plate 107, a second electric slide 402 is mounted on one side wall of the second mounting plate 401, a third electric push rod 403 is transmission-connected to the output end of the second electric slide 402, a second motor 404 is mounted on the output end of the third electric push rod 403, a second connecting plate 405 is transmission-connected to the output end of the second motor 404, an image collection structure 406 is mounted at the bottom center of the second connecting plate 405, Two sets of fixing rods 407 are symmetrically installed at the bottom of the image collection structure 406, and a distance sensor 408 is installed at the bottom of the fixing rod 407. The distance sensor 408 is electrically connected to the image collection structure 406. A fourth electric push rod 409 is installed at the bottom edge of the second connecting plate 405. A mounting plate 410 is installed on the output end of the fourth electric push rod 409. A mounting rod 411 is installed at the bottom of the mounting plate 410. An inflatable bag structure 412 is sleeved on the outer wall of the mounting rod 411. The inflatable bag structure 412 is installed on the outer wall of the inflatable bag structure 412. The anti-wear pad layer 413, an air pump 414 is installed on the outer wall of the mounting rod 411, and the output end of the air pump 414 is connected to the input end of the inflatable bag structure 412. A third connecting plate 415 is installed on the bottom of a side wall of the second connecting plate 405 away from the fourth electric push rod 409, and a fifth electric push rod 416 is installed at the bottom of the third connecting plate 415. A fourth connecting plate 417 is installed on the output end of the fifth electric push rod 416, and a third mounting plate 422 is installed on a side wall of the fourth connecting plate 417. The bottom of the third mounting plate 422 is installed There is a sixth electric push rod 423, a fourth mounting plate 424 is installed on the output end of the sixth electric push rod 423, an elastic plate 421 is installed on one side wall of the fourth mounting plate 424, two groups of sleeve tubes 418 are symmetrically installed at the bottom edge of the third connecting plate 415, and a group of sliding rods 419 are slidably connected to the inner wall of each group of the sleeve tubes 418, and the other end of each group of the sliding rods 419 passes through the fourth connecting plate 417 and is installed on the top edge of the elastic plate 421, and a group of scale structures 420 are installed on the outer wall of each group of the sliding rods 419.

[0044] While the seventh electric push rod 108 pushes the first connecting plate 105 forward, the distance sensor 408 is used to detect the distance to observe whether the bridge surface has protrusions, depressions and damage. The distance sensor 408 transmits infrared rays and receives reflected infrared signals to determine the distance between the object and the sensor. When protrusions or depressions occur, the elastic plate 421 is preliminarily adjusted according to the value transmitted by the distance sensor 408. After the value is determined, the sixth electric push rod 423 is started to drive the elastic plate 421 away from or close to the fourth connecting plate 417. The fifth electric push rod 416 is then started to push the elastic plate 421 down to collect data on the raised and recessed parts, and during the collection process, the sixth electric push rod 423 drives the elastic plate 421 to adjust the bending angle to collect the most accurate values. Moreover, since the two sets of sliding rods 419 are connected to the elastic plate 421, the sliding rod 419 is driven to slide in the sleeve 418 while data is collected. After sliding to the specified value, the determination of the value can be assisted by observing the scale structure 420, thereby improving the accuracy of the value.

[0045] When damage occurs on the surface of the bridge, the installation plate 410 is driven to move to the top of the damaged opening, and then the fourth electric push rod 409 is started to push the installation rod 411 into the damaged opening, thereby causing the installation plate 410 to seal the damaged opening, and then the air pump 414 is started to fill the inflatable bag structure 412, so that the inflatable bag structure 412 fills and limits the damaged opening, and the damaged opening is filled and tested, and the inflatable bag structure 412 is protected by the anti-wear pad layer 413, thereby improving the detection effect of the device.

[0046] The distance sensor 408 is used for distance detection. When bumps or depressions appear on the bridge surface, the elastic plate 421 is preliminarily adjusted according to the value transmitted by the distance sensor 408, and then the elastic plate 421 is driven to adjust the bending angle, thereby improving the accuracy of the value. When damage appears on the bridge surface, the mounting plate 410 is driven to move to the top of the damaged opening, and then the inflatable bag structure 412 is started to perform filling limit detection on the damaged opening, thereby improving the detection effect of the device.

[0047] When the bridge surface is tilted, the counterweight structure 313 will be tilted. When tilted, the counterweight structure 313 drives the two sets of sliding rectangular plates 311 to slide in the slide groove 306, and plays the role of compressing and stretching the compression spring 310 during the sliding process. Therefore, when the compression spring 310 feels the pressure of stretching and compression respectively, it starts to rebound and reset. During the tilting process, the tilting state of the bridge surface is judged according to the sliding area of ​​the counterweight structure 313 in the slide groove 306 and the compression degree of the compression spring 310, thereby improving the horizontal detection effect of the bridge surface.

[0048] To prevent the device from collapsing during subsequent work, the first electric slide 302 can be started when the counterweight structure 313 tilts to drive the counterweight structure 313 to move horizontally away from the fixed plate 107, so as to balance the angle and force of the tilt and expand the controllable range of the counterweight structure 313. Subsequently, in order to increase the counterweight force of the counterweight structure 313, the second electric push rod 303 is started to drive the counterweight structure 313 to move up and down, thereby increasing the counterweight range of the device and improving the stability of the device.

[0049] The working state of the clamping block 205 can be freely selected according to the work location. When there is a fixable building, the two groups of clamping blocks 205 are located at both ends of the fixable building, and then the third motor 206 is started to drive the threaded rod 202 to rotate, and the threaded rod 202 drives the sliding block 204 to slide in the sliding cavity 203, and then drives the two groups of clamping blocks 205 to fix and limit the fixable building, thereby improving the stability of the subsequent detection device.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bridge inspection device with a counterweight mechanism, comprising a moving assembly (1), characterized in that: A limit assembly (2) is installed at one end of the moving assembly (1), a counterweight assembly (3) is installed on one side wall of the moving assembly (1), and a detection assembly (4) is installed on a side wall of the moving assembly (1) away from the counterweight assembly (3); The detection assembly (4) comprises a second connecting plate (405) and an elastic plate (421); a distance sensor (408) is arranged directly below the second connecting plate (405); and a fourth electric push rod (409) is installed at the bottom edge of the second connecting plate (405); A mounting plate (410) is mounted on the output end of the fourth electric push rod (409), a mounting rod (411) is mounted on the bottom of the mounting plate (410), and an inflatable bag structure (412) is sleeved on the outer wall of the mounting rod (411); The distance sensor (408) is used to detect the distance, and when the bridge surface is convex or concave, the elastic plate (421) is preliminarily adjusted according to the value transmitted by the distance sensor (408); A third connecting plate (415) is installed on the bottom of a side wall of the second connecting plate (405) away from the fourth electric push rod (409); a fifth electric push rod (416) is installed on the bottom of the third connecting plate (415); a fourth connecting plate (417) is installed on the output end of the fifth electric push rod (416); a third mounting plate (422) is installed on a side wall of the fourth connecting plate (417); a sixth electric push rod (423) is installed on the bottom of the third mounting plate (422); a fourth mounting plate (424) is installed on the output end of the sixth electric push rod (423); and the elastic plate (421) is installed on a side wall of the fourth mounting plate (424).

2. A bridge inspection device with a counterweight mechanism according to claim 1, characterized in that: The moving assembly (1) comprises a support plate (101), a first electric push rod (102) being mounted on the top of the support plate (101), a support block (103) being mounted on the output end of the first electric push rod (102), two groups of first connecting rods (104) being symmetrically mounted on a side wall of the support block (103), and a seventh electric push rod (108) being mounted on a side wall of the support plate (101).

3. A bridge inspection device with a counterweight mechanism according to claim 2, characterized in that: A first connecting plate (105) is mounted on the output end of the seventh electric push rod (108), two sets of universal wheel structures (106) are symmetrically mounted at the bottom edge of the first connecting plate (105), and a fixing plate (107) is mounted at the top center of the first connecting plate (105).

4. A bridge inspection device with a counterweight mechanism according to claim 3, characterized in that: The counterweight assembly (3) comprises a first mounting plate (301), one end of the first mounting plate (301) being mounted on a side wall of a fixed plate (107), and a first electric slide (302) being mounted on a side wall of the first mounting plate (301) away from the fixed plate (107).

5. A bridge inspection device with a counterweight mechanism according to claim 4, characterized in that: The output end of the first electric slide (302) is connected to a second electric push rod (303) in a transmission manner, the output end of the second electric push rod (303) is installed with a first motor (304), and the output end of the first motor (304) is connected to a fixed disk (305) in a transmission manner.

6. A bridge inspection device with a counterweight mechanism according to claim 5, characterized in that: A slide groove (306) is provided at the bottom of the fixed plate (305), and two groups of mounting blocks (307) are symmetrically mounted on the inner wall of the fixed plate (305). A group of second connecting rods (308) is mounted on one side wall of each group of mounting blocks (307), and a group of stoppers (309) are mounted on one end of each group of second connecting rods (308) away from the mounting blocks (307).

7. A bridge inspection device with a counterweight mechanism according to claim 6, characterized in that: A group of compression springs (310) is movably sleeved on the outer wall of each group of the second connecting rods (308); one end of each group of the compression springs (310) is mounted on a side wall of the mounting block (307); the other end of each group of the compression springs (310) is mounted on a group of sliding rectangular plates (311); each group of the sliding rectangular plates (311) is slidably connected to the outer wall of the second connecting rods (308); a connecting block (312) is connected between the bottoms of the two groups of the sliding rectangular plates (311); a counterweight structure (313) is mounted on the bottom of the connecting block (312).

8. The bridge inspection device with a counterweight mechanism according to claim 3, characterized in that: The detection component (4) also includes a second mounting plate (401), one end of the second mounting plate (401) is mounted on a side wall of the fixed plate (107), a second electric slide (402) is mounted on a side wall of the second mounting plate (401), the output end of the second electric slide (402) is transmission-connected to a third electric push rod (403), the output end of the third electric push rod (403) is mounted with a second motor (404), the top of the second connecting plate (405) is transmission-connected to the output end of the second motor (404), an image collection structure (406) is mounted at the bottom center of the second connecting plate (405), two groups of fixed rods (407) are symmetrically mounted at the bottom of the image collection structure (406), and the distance sensor (408) is mounted on the bottom of the fixed rod (407).

9. The bridge inspection device with a counterweight mechanism according to claim 1, characterized in that: An anti-wear pad layer (413) is installed on the outer wall of the inflatable bag structure (412), an air pump (414) is installed on the outer wall of the mounting rod (411), and the output end of the air pump (414) is connected to the input end of the inflatable bag structure (412).

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