Bridge detection equipment and detection method thereof

Abstract

The invention discloses bridge detection equipment and a detection method thereof, and belongs to the field of bridge detection.The bridge detection equipment comprises a shell, first rotating rings are fixedly connected to the front side and the rear side of the shell correspondingly, and second rotating rings are rotationally connected to the opposite faces of the two first rotating rings correspondingly; a plurality of scraping plates which are distributed in an annular array are connected into the second rotating ring in a sliding manner; and a first spring for accommodating the first sliding block to relatively move in the scraping plate is arranged at the position, corresponding to the first sliding block, in the scraping plate, and a first sliding groove which naturally extends is welded in the first spring. By moving a scraper, the scraper is located in a second rotating ring, the scraper can be conveniently attached to a sheath on the surface of the inhaul cable, the scraper can clean attachments on the surface of the inhaul cable when the shell is moved, the scraper is attached to the sheath, the sheath cleaning effect is better, and the attachments are prevented from affecting movement of the shell and the device.

Description

Technical Field

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

[0002] The methods for bridge verification include inspection, calculation, and testing. The verification inspection is to measure the existing dimensions of each part and the cross-section of the bridge structure members and check the diseases and defects of each part. The verification calculation is to calculate the bearing capacity of the structure based on the existing dimensions of the structure, the size of the actual cross-section, and the allowable stress of the material;

[0003] The verification test is generally divided into two parts: static load and dynamic load, including the detection of the stay cables of the bridge. The stay cable detection includes:

[0004] Appearance detection: Detect the appearance of the stay cable, including whether there are damages, corrosion, deformations, etc. on the surface to evaluate the usage status and safety of the stay cable;

[0005] Breaking force test: Test the breaking force of the stay cable through professional test equipment to evaluate the bearing capacity and safety of the stay cable;

[0006] Internal structure detection: Use advanced non-destructive testing techniques to detect the internal structure of the stay cable to discover possible defects, cracks, and other problems.

[0007] Chinese Patent with the authorization announcement number CN118275106B discloses a bridge stay cable tensile resonance detection device. Through on-site cruise detection, in cooperation with the set voice player and the first electromagnetic switch, it can detect possible breakage, looseness, etc. of the stay cable during daily inspection and maintenance or after resonance occurs. The detection is simple and convenient, and is more accurate than simulation environment detection.

[0008] Chinese Patent with the authorization announcement number CN117444997A discloses a bridge stay cable apparent detection robot. By setting an angled adjustable brace inside the supporting ring, using the brace as the supporting component for the rotation of the grooved wheel, and using the driving motor as the rotation power of the grooved wheel, after opening the assembly part connected to the end of the supporting ring, the device can surround the outer sheath of stay cables with different thicknesses and sizes for self-recording inspection, with a wider application range.

[0009] The first method mentioned above, through on-site cruise detection, in cooperation with the set voice player and the first electromagnetic switch, can be used in daily inspection and maintenance. The second method sets an angled adjustable strut inside the supporting ring to enclose the entire device outside the outer sheaths of cables with different thicknesses for self-recording inspection. However, after the cables are used for a long time, attachments appear on the surface of the cable sheaths, which easily cause the device to shake, making the detection inaccurate. Even worse, it may make it difficult for the detection device to move on the cable sheaths, affecting the detection of the cables and the cable sheaths on their surfaces and making the detection difficult to carry out. Summary of the Invention

[0010] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a bridge detection device and its detection method. By moving the scraping plate, the scraping plate is inside the second rotating ring, which facilitates the scraping plate to fit with the outer sheath of the cable. When moving the outer shell, the scraping plate can clean the attachments on the surface of the cable to prevent these attachments from affecting the movement of the outer shell.

[0011] To solve the above problems, the present invention adopts the following technical solutions.

[0012] A bridge detection device includes a housing. Both the front and rear sides of the housing are fixedly connected with first rotating rings. The opposite surfaces of the two first rotating rings are rotatably connected with second rotating rings. A plurality of scraping plates distributed in a circular array are slidably connected inside the second rotating rings.

[0013] Inside the scraping plate, a first spring for accommodating the relative movement of the first slider inside the scraping plate is provided at the position corresponding to the first slider. Inside the first spring, a first sliding groove in a natural extended state is welded.

[0014] Furthermore, an adjusting mechanism is provided inside the first rotating ring. The adjusting mechanism includes an adjusting part. The adjusting part includes a mounting block slidably connected inside the first rotating ring. A second sliding groove is opened on the side of the mounting block close to the housing. An extension plate is formed by extending at a position close to the second sliding groove. The extension plate is slidably connected inside the second sliding groove.

[0015] Furthermore, a driving wheel is rotatably connected inside the mounting block. The bottom of the driving wheel is at the same horizontal plane as the bottom of the scraping plate.

[0016] Furthermore, a plurality of equally spaced second limiting grooves are opened on the surface of the mounting block close to the scraping plate. A second arc-shaped block is formed by extending at a position of the second rotating ring close to the mounting block. A third arc-shaped block is formed by extending from the rear side of the second rotating ring towards the first rotating ring. A second spring is welded inside the first rotating ring at the position corresponding to the third arc-shaped block.

[0017] Further, a driving member is provided inside the mounting block. The driving member includes a first driving rod slidably connected inside the mounting block. A ball is rotatably connected to the bottom of the first driving rod. One side of the first driving rod close to the driving wheel extends towards the housing to form an extension block. A third spring is welded to the top of the extension block. A second driving rod slidably connected inside the mounting block is provided at the top of one side of the first driving rod close to the extension block.

[0018] Further, one side of the second driving rod close to the first driving rod is a right trapezoid, and the contact surface of the first driving rod moving towards the second driving rod is an inclined surface. A third driving rod slidably connected inside the first rotating ring is provided on the side of the second driving rod away from the first driving rod.

[0019] Further, a triggering member is provided inside the housing. The triggering member includes a plurality of arc-shaped plates annularly arrayed and movably connected inside one side of the housing close to the first rotating ring. A plurality of limiting rods are fixedly connected inside the housing.

[0020] Further, a pressing rod is rotatably connected to the middle of the side of the arc-shaped plate away from the third driving rod. A first circular ring slidably connected inside the housing is provided on the side of the pressing rod away from the arc-shaped plate. A cavity is provided inside the housing corresponding to the moving track of the first circular ring.

[0021] Further, one side of the first rotating ring close to the housing extends towards the housing to form a first arc-shaped block. A limiting rod extends from one side of the first circular ring close to the first arc-shaped block. The limiting rod penetrates through the housing and extends into the inside of the first arc-shaped block. A first limiting groove is provided inside the first arc-shaped block corresponding to the position of the limiting rod. A reset spring in a taut state is welded to the right side of the first limiting groove.

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

[0023] S1: Installation. By separating the device, it is convenient to place the cable and the sheath inside the device. Then, the instrument is fixed on the surface of the housing. Rotate the second rotating ring and move the mounting block so that the mounting block drives the driving wheel and the first driving rod to contact the sheath. Release the second rotating ring, and the second arc-shaped block is snapped into the inside of the second limiting groove. Four driving wheels in the front and back clamp the sheath.

[0024] S2: Deblocking. The driving wheel rotates and drives the scraper to move. The scraper scrapes off the attachments on the surface of the sheath. When encountering a bulge, the four driving wheels at the back keep the housing and the sheath fixed, while the first rotating ring at the front drives the second rotating ring and the adjusting mechanism to rotate.

[0025] S3: Measurement. During the movement of the housing, the instrument fixed on the surface of the housing detects the cable and the sheath.

[0026] Advantages of the present invention compared with the prior art:

[0027] 1. In this solution, by moving the scraping plate, the scraping plate is inside the second rotating ring, which facilitates the scraping plate to fit with the sheath on the surface of the cable. When moving the outer shell, the scraping plate can clean the attachments on the surface of the cable, and the scraping plate fits with the sheath, resulting in a better cleaning effect on the sheath, preventing these attachments from affecting the movement of the outer shell and the device.

[0028] 2. In this solution, under the action of the first chute, the scraping plate always fits with the surface of the cable, which facilitates cleaning cables of different sizes. Moreover, when cleaning the attachments on the surface of the cable sheath causes the scraping plate to move, it can return to its original position under the action of the first chute, enabling the scraping plate to always clean the attachments on the surface of the sheath. After cleaning the attachments, on the one hand, it avoids the corrosion damage caused by the attachments to the sheath, which affects the protective ability of the sheath for the cable.

[0029] 3. In this solution, the bottom of the driving wheel and the bottom of the scraping plate are at the same horizontal plane. When the mounting block drives the scraping plate to move, when the driving wheel contacts the sheath, the scraping plate also contacts the sheath, making the cleaning of the attachments on the surface of the sheath by the scraping plate more precise. Moreover, there are multiple driving wheels, and the sheath is clamped by the multiple driving wheels, making the movement of the device more convenient and enabling it to move on the sheaths of cables with different specifications, thus expanding the application range of the device. 316) Under the action of the second spring, it returns to its original position, facilitating the third arc-shaped block to drive the second rotating ring to rotate to its original position. At this time, the second arc-shaped block is inserted into the second limiting groove again, making the limiting of the mounting block more convenient.

[0030] 4. In this solution, by moving the mounting block, the mounting block and the driving wheel move to the surface of the cable sheath together, facilitating the spherical beads to fit with the surface of the sheath. When there is a bulge on the surface of the sheath, at this time, the first driving rod and the driving wheel are on the same travel route. When the second driving rod moves, the second driving rod squeezes the third driving rod, thereby causing the third driving rod to move, making the movement of the third driving rod more convenient. It can trigger the third driving rod to extend into the second rotating ring according to the bulge on the surface of the sheath, facilitating the subsequent driving of the second rotating ring to rotate with the adjusting mechanism, thus making it more convenient to prevent the device from detaching from the surface of the sheath.

[0031] 5. When the first ring moves inside the cavity in this solution, the first ring can drive the limit rod to leave the inside of the first limit groove. At this time, the first arc-shaped block will not be restricted by the housing. At this time, the first rotating ring can drive the second rotating ring and the adjusting mechanism to rotate. A reset spring in a tense state is welded to the right side of the first limit groove. The first rotating ring, the second rotating ring and the adjusting mechanism rotate under the action of the reset spring, so that the driving wheel changes from its original trajectory, preventing the driving wheel from moving from the bulged part of the sheath and avoiding the bulge, so as to prevent the situation that two adjacent driving wheels among the four driving wheels do not contact the sheath, which may cause the device to slip from the surface of the sheath and make the measuring tool on the surface of the device measure inaccurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the present invention;

[0033] Figure 2 is an internal schematic diagram of the present invention;

[0034] Figure 3 is Figure 2 an enlarged view of part A of

[0035] Figure 4 is a schematic internal structure diagram of the second rotating ring of the present invention;

[0036] Figure 5 is a schematic structural diagram of the second rotating ring of the present invention;

[0037] Figure 6 is a schematic structural diagram of the first rotating ring of the present invention;

[0038] Figure 7 is a schematic structural diagram of the arc-shaped plate and the limiting rod of the present invention;

[0039] Figure 8 is a schematic structural diagram of the trigger member of the present invention;

[0040] Figure 9 is a schematic structural diagram of the arc-shaped plate of the present invention.

[0041] Explanation of the reference numerals in the drawings:

[0042] 1. Outer shell; 11. Cavity; 2. First rotating ring; 21. Extension plate; 22. First arc-shaped block; 23. First limiting groove; 24. Return spring; 3. Second rotating ring; 31. Scraper; 312. First slider; 313. First sliding groove; 314. First spring; 315. Second arc-shaped block; 316. Third arc-shaped block; 317. Second spring; 4. Adjusting mechanism; 41. Adjusting part; 411. Driving wheel; 412. Mounting block; 414. Second sliding groove; 415. Second limiting groove; 42. Driving part; 421. First driving rod; 422. Spherical bead; 423. Extension block; 424. Third spring; 425. Second driving rod; 426. Third driving rod; 43. Trigger part; 431. First circular ring; 432. Limiting rod; 433. Arc-shaped plate; 434. Restricting rod; 435. Extrusion rod. Detailed implementation manner

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 to 9, a bridge detection device, including a housing 1, which fixes the detection instrument to the housing 1, facilitating the movement of the housing 1 with the instrument. Since the housing 1 is connected by a hinge, it is convenient to put the housing 1 on the surface of the cable. Both the front and rear sides of the housing 1 are fixedly connected with a first rotating ring 2. The opposite surfaces of the two first rotating rings 2 are rotatably connected with a second rotating ring 3. A plurality of scraping plates 31 distributed in a circular array are slidably connected inside the second rotating ring 3. By moving the scraping plates 31, the scraping plates 31 are inside the second rotating ring 3, facilitating the scraping plates 31 to fit with the sheath on the surface of the cable. When the housing 1 is moved, the scraping plates 31 can clean the attachments on the surface of the cable, preventing these attachments from affecting the movement of the housing 1. At the position corresponding to the scraping plate 31 inside the second rotating ring 3, a first slider 312 extends towards the scraping plate 31, and the first slider 312 extends into the inside of the scraping plate 31. The scraping plate 31 is restricted by the first slider 312, making the movement of the scraping plate 31 more convenient. At the position corresponding to the first slider 312 inside the scraping plate 31, a first spring 314 for accommodating the relative movement of the first slider 312 inside the scraping plate 31 is provided, making the movement of the scraping plate 31 more stable. And the shaking generated during the cleaning of the attachments is transmitted to the scraping plate 31, causing the scraping plate 31 to move inside the second rotating ring 3. A first chute 313 in a natural stretched state is welded inside the first spring 314. Under the action of the first chute 313, the scraping plate 31 always fits with the surface of the cable, facilitating the cleaning of cables of different sizes. And the movement of the scraping plate 31 caused by cleaning the attachments on the surface of the cable sheath can return to the original position under the action of the first chute 313, enabling the scraping plate 31 to always clean the attachments on the surface of the sheath. On the other hand, after cleaning the attachments, it avoids the attachments from causing corrosion damage to the sheath, affecting the protection ability of the sheath for the cable.

[0045] Such as Figures 1 to 9As shown, an adjustment mechanism 4 is provided inside the first rotating ring 2, and the adjustment mechanism 4 includes an adjustment member 41. The adjustment member 41 includes a mounting block 412 slidably connected to the inside of the first rotating ring 2. A second slide groove 414 is provided on the side of the mounting block 412 close to the housing 1. An extension plate 21 is extended to form a position close to the second slide groove 414. The extension plate 21 is slidably connected to the inside of the second slide groove 414, and extends into the inside of the second slide groove 414 through the first rotating ring 2, so that the mounting block 412 can move more conveniently inside the first rotating ring 2. By moving the mounting block 412, the mounting block 412 moves toward the cable, and the side of the mounting block 412 close to the scraper 31 extends in the direction of the scraper 31. , when the mounting block 412 moves toward the cable, it moves with the scraper 31, making the movement of the scraper 31 more convenient, the internal rotation of the mounting block 412 is connected to the driving wheel 411, and the driving wheel 411 is provided with a built-in motor, which is a prior art and will not be elaborated here, so as to facilitate the rotation of the driving wheel 411, and the driving wheel 411 can drive the device to move on the surface of the cable sheath, making the movement of the device more convenient, the bottom of the driving wheel 411 and the bottom of the scraper 31 are in the same horizontal plane, so that when the mounting block 412 moves with the scraper 31, when the driving wheel 411 contacts the sheath, the scraper 31 contacts the sheath, so that the scraper 31 can clean the attachments on the surface of the sheath more accurately, and the drive There are multiple driving wheels 411, and the sheath is clamped by multiple driving wheels 411, which makes the device more convenient to move, and can move on the surfaces of cable sheaths of different specifications, making the device more widely applicable. A side surface of the mounting block 412 close to the scraper 31 is provided with multiple equally spaced second limiting grooves 415, and the second rotating ring 3 extends near the mounting block 412 to form a second arc block 315. By rotating the second rotating ring 3, the second rotating ring 3 rotates with the second arc block 315, so that the second arc block 315 is detached from the inside of the second limiting groove 415. At this time, the mounting block 412 can move inside the first rotating ring 2, which makes the mounting block 412 move more conveniently. The rear side of the second rotating ring 3 extends toward the direction of the first rotating ring 2 to form a third arc block 316. A second spring 317 is welded inside the first rotating ring 2 at a position corresponding to the third arc block 316. When the second rotating ring 3 rotates, the third arc block 316 squeezes the second spring 317 to deform the second spring 317. When the mounting block 412 finishes moving, the second rotating ring 3 is released so that the third arc block 316 returns to its original position under the action of the second spring 317, making it convenient for the third arc block 316 to rotate with the second rotating ring 3 to its original position. At this time, the second arc block 315 is again inserted into the second limiting groove 415, making it more convenient to limit the mounting block 412.

[0046] like Figures 1 to 9As shown, a driving member 42 is provided inside the mounting block 412. The driving member 42 includes a first driving rod 421 slidably connected to the inside of the mounting block 412. A ball 422 is rotatably connected to the bottom of the first driving rod 421, and the bottom of the ball 422 is on the same horizontal plane as the driving wheel 411. By moving the mounting block 412, the mounting block 412 and the driving wheel 411 are moved to the surface of the cable sheath together, facilitating the ball 422 to fit against the sheath surface. When a bulge appears on the sheath surface, at this time, the first driving rod 421 and the driving wheel 411 are on the same travel route. At this time, the first driving rod 421 contacts the bulge first, and the height of the bulge presses against the first driving rod 421, causing the first driving rod 421 to move inside the mounting block 412. The movement of the first driving rod 421 is more convenient. A side of the first driving rod 421 close to the driving wheel 411 extends towards the housing 1 to form an extension block 423. During the movement of the first driving rod 421, the extension block 423 moves inside the mounting block 412. A third spring 424 is welded to the top of the extension block 423. When the extension block 423 moves upward, the extension block 423 facilitates pressing against the third spring 424, causing the third spring 424 to change from its original natural extended state to a taut state, facilitating the subsequent return of the first driving rod 421 to its original position. A second driving rod 425 slidably connected to the inside of the mounting block 412 is provided at the top of a side of the first driving rod 421 close to the extension block 423. At this time, when the first driving rod 421 moves, it can press against the second driving rod 425. A side of the second driving rod 425 close to the first driving rod 421 is a right trapezoid, and the contact surface of the first driving rod 421 moving towards the second driving rod 425 is an inclined surface, facilitating the first driving rod 421 to press against the inclined surface of the second driving rod 425, thereby driving the second driving rod 425 to move inside the mounting block 412. A third driving rod 426 slidably connected to the inside of the first rotating ring 2 is provided on a side of the second driving rod 425 away from the first driving rod 421, facilitating the second driving rod 425 to press against the third driving rod 426 when the second driving rod 425 moves, thereby causing the third driving rod 426 to move and making the movement of the third driving rod 426 more convenient. The third driving rod 426 can be triggered to extend into the inside of the second rotating ring 3 according to the bulge on the sheath surface, facilitating the subsequent driving of the second rotating ring 3 to drive the adjusting mechanism 4 to rotate, thus making it more convenient to prevent the device from detaching from the sheath surface.

[0047] As Figures 1 to 9As shown, a trigger 43 is arranged inside the outer shell 1. The trigger 43 includes a plurality of arc-shaped plates 433 which are annularly arrayed and movably connected to the inner side of the outer shell 1 near the first rotating ring 2. By moving the third driving rod 426, the third driving rod 426 can squeeze one side of the arc-shaped plate 433. A plurality of limiting rods 434 are fixedly connected to the inside of the outer shell 1. The two ends of the arc-shaped plate 433 are penetrated by the limiting rods 434. When the third driving rod 426 squeezes the arc-shaped plate 433, the arc-shaped plate 433 can only be driven to tilt, but cannot move. When bulges appear simultaneously in two adjacent directions of the sheath, the corresponding third driving rods 426 in the two directions squeeze the arc-shaped plate 433, so that both sides of the arc-shaped plate 433 between the two directions are squeezed. At this time, the arc-shaped plate 433 can move inside the outer shell 1, making it more convenient for the arc-shaped plate 433 to move. A squeezing rod 435 is rotatably connected to the middle of the side of the arc-shaped plate 433 away from the third driving rod 426. At this time, when the arc-shaped plate 433 moves, the squeezing rod 435 can be driven to move inside the outer shell 1, making it more convenient for the squeezing rod 435 to move. A first ring 431 which is slidably connected to the inside of the outer shell 1 is arranged on the side of the squeezing rod 435 away from the arc-shaped plate 433. The first ring 431 moves inside the outer shell 1 by being squeezed by the squeezing rod 435, making it more convenient for the first ring 431 to move. A cavity 11 is formed inside the outer shell 1 corresponding to the moving track of the first ring 431, facilitating the movement of the first ring 431 inside the cavity 11. A first arc-shaped block 22 extends from the side of the first rotating ring 2 close to the outer shell 1 towards the outer shell 1. The first arc-shaped block 22 extends into the inside of the outer shell 1 and is provided with a groove for accommodating the movement of the first arc-shaped block 22. A limiting rod 432 extends from the side of the first ring 431 close to the first arc-shaped block 22. The limiting rod 432 penetrates the outer shell 1 and extends into the inside of the first arc-shaped block 22. A first limiting groove 23 is formed inside the first arc-shaped block 22 corresponding to the position of the limiting rod 432. When the first ring 431 moves inside the cavity 11, the first ring 431 can drive the limiting rod 432 to leave the inside of the first limiting groove 23. At this time, the first arc-shaped block 22 is not restricted by the outer shell 1. At this time, the first rotating ring 2 can drive the second rotating ring 3 and the adjusting mechanism 4 to rotate. A reset spring 24 in a taut state is welded to the right side of the first limiting groove 23. The first rotating ring 2, the second rotating ring 3 and the adjusting mechanism 4 rotate under the action of the reset spring 24, so that the driving wheel 411 changes from the original track, preventing the driving wheel 411 from moving from the bulged part of the sheath and avoiding the bulge, so as to prevent the situation that two adjacent driving wheels 411 among the four driving wheels 411 do not contact the sheath, thereby causing the device to slide off the surface of the sheath and making the measuring tool on the surface of the device measure inaccurately.

[0048] A detection method for a bridge detection device includes the following steps:

[0049] S1: Installation, by separating the device, it is convenient to place the cable and the sheath inside the device, then fix the instrument on the surface of the housing 1, rotate the second rotating ring 3, move the mounting block 412, make the mounting block 412 with the driving wheel 411 and the first driving rod 421 contact the sheath, loosen the second rotating ring 3, the second arc block 315 is inserted into the second limiting groove 415, and the four front and rear driving wheels 411 clamp the sheath;

[0050] S2: Remove the obstruction. The driving wheel 411 rotates and moves the scraper 31. The scraper 31 scrapes off the attachments on the surface of the jacket. When encountering bulges, the four driving wheels 411 on the rear side keep the housing 1 and the jacket fixed, while the first rotating ring 2 on the front side rotates with the second rotating ring 3 and the adjusting mechanism 4;

[0051] S3: Measurement: during the movement of the shell 1, instruments fixed on the surface of the shell 1 detect the cable and the sheath.

[0052] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge inspection device, comprising a housing (1), characterized in that: The front and rear sides of the housing (1) are both fixedly connected to a first rotating ring (2), the opposite surfaces of the two first rotating rings (2) are both rotatably connected to a second rotating ring (3), and the interior of the second rotating ring (3) is slidably connected to a plurality of scrapers (31) distributed in a ring array; A first spring (314) for accommodating the relative movement of the first slider (312) in the scraper (31) is provided at a position inside the scraper (31) corresponding to the first slider (312), and a first sliding groove (313) in a naturally extended state is welded inside the first spring (314).

2. A bridge detection device according to claim 1, characterized in that: An adjusting mechanism (4) is arranged inside the first rotating ring (2), and the adjusting mechanism (4) includes an adjusting member (41), and the adjusting member (41) includes a mounting block (412) slidably connected to the inside of the first rotating ring (2), and a second sliding groove (414) is provided on a side of the mounting block (412) close to the housing (1), and an extension plate (21) is extended from a position of the (2) close to the second sliding groove (414), and the extension plate (21) is slidably connected to the inside of the second sliding groove (414).

3. A bridge detection device according to claim 2, characterized in that: The mounting block (412) is rotatably connected to a driving wheel (411) inside, and the bottom of the driving wheel (411) is in the same horizontal plane as the bottom of the scraper (31).

4. A bridge detection device according to claim 3, characterized in that: A plurality of second limiting grooves (415) are provided on a surface of one side of the mounting block (412) close to the scraper (31), and the second rotating ring (3) extends near the mounting block (412) to form a second arc block (315). The rear side of the second rotating ring (3) extends in the direction of the first rotating ring (2) to form a third arc block (316), and a second spring (317) is welded inside the first rotating ring (2) at a position corresponding to the third arc block (316).

5. A bridge detection device according to claim 4, characterized in that: A driving member (42) is arranged inside the mounting block (412), and the driving member (42) comprises a first driving rod (421) slidably connected to the inside of the mounting block (412); a ball (422) is rotatably connected to the bottom of the first driving rod (421); a side of the first driving rod (421) close to the driving wheel (411) extends in the direction of the housing (1) to form an extension block (423); a third spring (424) is welded to the top of the extension block (423); and a second driving rod (425) slidably connected to the inside of the mounting block (412) is arranged on the top of the side of the first driving rod (421) close to the extension block (423).

6. A bridge detection device according to claim 5, characterized in that: The side of the second driving rod (425) close to the first driving rod (421) is a right-angled trapezoid, and the contact surface of the first driving rod (421) moving toward the second driving rod (425) is an inclined surface, and the side of the second driving rod (425) away from the first driving rod (421) is provided with a third driving rod (426) slidably connected to the inside of the first rotating ring (2).

7. A bridge detection device according to claim 6, characterized in that: A trigger member (43) is arranged inside the housing (1), and the trigger member (43) comprises a plurality of arc-shaped plates (433) distributed in a ring array and movably connected inside a side of the housing (1) close to the first rotating ring (2), and a plurality of limiting rods (434) are fixedly connected inside the housing (1).

8. A bridge inspection device according to claim 7, characterized in that: The middle part of the side of the arc plate (433) away from the third driving rod (426) is rotatably connected to an extrusion rod (435), and the side of the extrusion rod (435) away from the arc plate (433) is provided with a first ring (431) slidably connected to the inside of the shell (1), and a cavity (11) is opened inside the shell (1) corresponding to the moving track of the first ring (431).

9. A bridge inspection device according to claim 8, characterized in that: A side of the first rotating ring (2) close to the outer shell (1) extends in the direction of the outer shell (1) to form a first arc block (22); a side of the first circular ring (431) close to the first arc block (22) extends to form a limiting rod (432); the limiting rod (432) penetrates the outer shell (1) and extends to the inside of the first arc block (22); a first limiting groove (23) is provided inside the first arc block (22) at a position corresponding to the limiting rod (432); a return spring (24) in a taut state is welded to the right side of the first limiting groove (23).

10. A detection method for a bridge detection device according to any one of claims 1 to 9, characterized in that: The steps include: S1: Installation, by separating the device, it is convenient to place the cable and the sheath inside the device, then fix the instrument on the surface of the housing (1), rotate the second rotating ring (3), move the mounting block (412), make the mounting block (412) with the driving wheel (411) and the first driving rod (421) contact the sheath, loosen the second rotating ring (3), the second arc block (315) is inserted into the inside of the second limiting groove (415), and the four driving wheels (411) at the front and rear clamp the sheath; S2: Remove the obstruction. The driving wheel (411) rotates and moves the scraper (31). The scraper (31) scrapes off the attached matter on the surface of the jacket. When encountering a bulge, the four driving wheels (411) on the rear side keep the housing (1) and the jacket fixed, while the first rotating ring (2) on the front side rotates with the second rotating ring (3) and the adjustment mechanism (4); S3: Measurement: During the movement of the housing (1), an instrument fixed on the surface of the housing (1) detects the cable and the sheath.

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