Road bridge detection device

Abstract

The invention discloses a road bridge detection device, which relates to the field of road bridge detection, and comprises a support frame, an ultrasonic probe and a climbing robot. The support frame is installed on the climbing robot, and also comprises a covering cover, wherein the covering cover has an opening on one side close to the bridge column, a first driving mechanism, one side of which is connected to the covering cover, and the first driving mechanism is used to drive the covering cover to move close to or away from one side of the bridge column, and a second driving mechanism, one side of which is connected to the ultrasonic probe, and the second driving mechanism is used to drive the ultrasonic probe to move and make the detection surface of the ultrasonic probe contact with the surface of the bridge column. The road bridge detection device covers the contact point between the ultrasonic probe and the bridge column by the covering cover, and conveys coupling liquid into the inside of the covering cover, so that the coupling liquid can completely fill the gap between the contact point between the ultrasonic probe and the bridge column, thereby improving the precision and accuracy of flaw detection on the bridge column.

Description

Technical Field

[0001] The invention relates to road bridge detection technology, and in particular to a road bridge detection device. Background Art

[0002] There are three types of road bridge inspections: regular inspections, periodic inspections, and special inspections. Regular inspections refer to the observation of bridges by road section inspectors or bridge maintenance personnel under various weather conditions. The purpose is to ensure that the bridge structure functions normally, so that the structure can be maintained and dealt with in an emergency in a timely manner, and to report on some major problems. Regular inspections rely on experienced full-time bridge inspection engineers, mainly visual observations, supplemented by necessary tools, conventional measuring instruments, cameras and other equipment to determine the cause of the disease on the spot, make quality status scores, and estimate the scope and methods of maintenance, or propose traffic restrictions. It is a comprehensive inspection of the quality status of the bridge structure that is regularly tracked. Special inspections are comprehensive inspections, strength measurements, and defect measurements of bridges by experts based on certain physical and chemical non-destructive inspection methods due to various special reasons. The purpose is to find out the clear cause, degree, and scope of the damage, analyze the consequences of the damage, and the dangers that potential defects may bring to the structure.

[0003] When performing ultrasonic nondestructive testing on bridge columns, there are inclined connecting columns and vertical columns on the bridge columns. When performing ultrasonic nondestructive testing on the columns, it is necessary to coat the surface of the columns with coupling liquid. When the surface of the inclined connecting columns of the bridge is damaged, such as the paint on the surface of the columns peeling off and breaking, the coupling liquid cannot remain well on the surface of the columns, resulting in ensuring good contact between the ultrasonic sensor and the surface of the object being tested, resulting in low precision and accuracy during detection. Summary of the invention

[0004] The purpose of the present invention is to provide a road bridge detection device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a road bridge detection device, comprising a support frame, an ultrasonic probe and a climbing robot, wherein the support frame is installed on the climbing robot, and further comprising:

[0006] A covering cover, wherein an opening is formed on a side of the covering cover close to the bridge column;

[0007] A first driving mechanism, one side of which is connected to the covering cover, and the first driving mechanism is used to drive the covering cover to move closer to or away from one side of the bridge column;

[0008] a second driving mechanism, one side of which is connected to the ultrasonic probe, the second driving mechanism is used to drive the ultrasonic probe to move and make the detection surface of the ultrasonic probe contact with the surface of the bridge column; after the second driving mechanism drives the detection surface of the ultrasonic probe to contact with the surface of the bridge column, the first driving mechanism drives the covering cover to move until the outer edge of its opening is in close contact with the surface of the bridge column, with the surface perpendicular to the direction in which the ultrasonic probe moves toward one side of the bridge column as the projection surface, and the projection of the surface enclosed by the outer edge of the opening on the covering cover on the projection surface covers the projection of the contact surface between the ultrasonic probe and the bridge column on the projection surface;

[0009] A coupling liquid delivery mechanism, the coupling liquid delivery mechanism is used to deliver coupling liquid to the inside of the cover;

[0010] A first eliminating mechanism for eliminating bubbles on the surface of the bridge column that is to be in contact with the ultrasonic probe;

[0011] The second eliminating mechanism is used to eliminate bubbles on the detection surface of the ultrasonic probe.

[0012] Furthermore, the first driving mechanism includes a rotating driving member, an arc-shaped rack, a mounting frame, an A telescopic driving member, a guide rod, an A arc-shaped bracket and a gear. The A arc-shaped bracket is rotatably mounted on the supporting frame, one side of the arc-shaped rack is fixedly connected to the A arc-shaped bracket, one side of the arc-shaped rack is meshed with the gear, the gear sleeve is arranged on the outside of the output shaft of the rotating driving member, the rotating driving member is fixedly mounted on the supporting frame, the mounting frame is fixedly mounted on the A arc-shaped bracket, one end of the guide rod is fixedly connected to the covering cover, the outside of the guide rod is slidably connected to the mounting frame, the moving end of the A telescopic driving member is fixedly connected to the covering cover, and the A telescopic driving member is fixedly mounted on the mounting frame.

[0013] Furthermore, the second driving mechanism includes a B telescopic driving member, an elastic member, a fixed sleeve and a slider. The outside of the fixed sleeve is slidably connected to the covering cover, the inside of one end of the fixed sleeve is fixedly connected to the elastic member, the end of the elastic member is fixedly connected to the slider, the outside of the slider is slidably connected to the inner wall of the fixed sleeve, one side of the slider is fixedly connected to the moving end of the B telescopic driving member, the B telescopic driving member is fixedly installed on the outside of the covering cover, and one side of the ultrasonic probe is inserted into the inside of the fixed sleeve and fixedly connected to the inner wall of the fixed sleeve.

[0014] Furthermore, the coupling liquid delivery mechanism includes a liquid storage tank, a small pump body, an A catheter and a B catheter. The coupling liquid is stored in the liquid storage tank. One end of the A catheter is inserted into the inner cavity of the liquid storage tank and extends to the bottom of the inner cavity of the liquid storage tank. The other end of the A catheter is connected to the inlet end of the small pump body. The small pump body is fixedly installed on the support frame. The outlet end of the small pump body is connected to one end of the B catheter. The other end of the B catheter is inserted into the inside of the covering cover.

[0015] Furthermore, the first elimination mechanism includes a moving component, a wiping piece A and a containing chamber, the containing chamber is fixedly installed inside the covering cover, an opening is opened on one side of the containing chamber, the wiping piece A is arranged inside the containing chamber, one side of the wiping piece A is connected to the moving component, and the moving component is used to drive the wiping piece A to move out from the containing chamber and move the surface of the bridge column on one side of the wiping piece A that is about to contact the ultrasonic probe.

[0016] Furthermore, the moving component includes a C telescopic drive member, two A torsion springs, two A swing arms and a mounting plate. The C telescopic drive member is fixedly installed on the outside of the covering cover. The moving end of the C telescopic drive member extends to the inside of the accommodating cabin and is fixedly connected to the mounting plate. One end of the two A swing arms is rotatably connected to the mounting plate through the A rotating shaft, one end of the two A swing arms is fixedly connected to the A wiping member, the two A torsion springs are respectively mounted on the outside of the two A rotating shafts, and one end of the two A torsion springs is fixedly connected to the mounting plate, and the other ends of the two A torsion springs are respectively fixedly connected to their adjacent A swing arms.

[0017] Furthermore, the second elimination mechanism includes two B torsion springs, two B swing arms, a B wiping piece and a limit plate. One end of the two B swing arms is connected to the mounting plate through the B rotating shaft, and the ends of the two B swing arms are fixedly connected to the B wiping piece. The two B torsion springs are respectively mounted on the outside of the two B rotating shafts, and one end of the two B torsion springs is fixedly connected to the mounting plate, and the other ends of the two B torsion springs are respectively fixedly connected to the adjacent B swing arms.

[0018] Furthermore, one end of the limiting plate is fixedly connected to the outside of the accommodating chamber, and the side surface of the end of the limiting plate is close to the detection surface of the ultrasonic probe.

[0019] Compared with the prior art, the road bridge detection device provided by the present invention covers the contact point between the ultrasonic probe and the bridge column by a covering cover, and delivers coupling liquid into the covering cover so that the coupling liquid can completely fill the gap between the contact point between the ultrasonic probe and the bridge column, thereby improving the precision and accuracy of flaw detection on the bridge column;

[0020] By sticking wiping piece A to the surface of the bridge column that will contact the ultrasonic probe and moving it, and sticking wiping piece B to the detection surface of the ultrasonic probe and moving it, bubbles on the surface of the bridge column that will contact the ultrasonic probe and bubbles on the detection surface of the ultrasonic probe are eliminated, thereby further improving the precision and accuracy of flaw detection of the bridge column. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall external structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a first partial three-dimensional structure provided by an embodiment of the present invention;

[0024] Figure 3 The embodiment of the present invention provides Figure 1 A is an enlarged schematic diagram;

[0025] Figure 4 A second partial cross-sectional structural schematic diagram provided by an embodiment of the present invention;

[0026] Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the structure of B;

[0027] Figure 6 A third partial cross-sectional structural schematic diagram provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the coordination of the moving assembly, A wiping member, B torsion spring, B swing arm and B wiping member provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Support frame; 2. Ultrasonic probe; 3. Climbing robot; 4. Cover; 5. First driving mechanism; 51. Rotating driving member; 52. Arc rack; 53. Mounting frame; 54. A telescopic driving member; 55. Guide rod; 56. A arc bracket; 57. Gear; 6. Second driving mechanism; 61. B telescopic driving member; 62. Elastic member; 63. Fixed sleeve; 64. Slider; 7. Coupling liquid delivery mechanism; 71. Liquid storage tank; 72. Small pump body; 73. A catheter; 74. B catheter; 8. First elimination mechanism; 81. Moving component; 811. C telescopic driving member; 812. Mounting plate; 813. A torsion spring; 814. A swing arm; 82. A wiping member; 83. Accommodating cabin; 9. Second elimination mechanism; 91. B torsion spring; 92. B swing arm; 93. B wiping member; 94. Limiting plate. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figures 1 to 7 A road bridge detection device includes a support frame 1, an ultrasonic probe 2 and a climbing robot 3, wherein the support frame 1 is installed on the climbing robot 3, and further includes:

[0033] A covering cover 4, wherein an opening is formed on a side of the covering cover 4 close to the bridge column;

[0034] A first driving mechanism 5, one side of which is connected to the cover 4, and the first driving mechanism 5 is used to drive the cover 4 to move closer to or away from one side of the bridge column;

[0035] A second driving mechanism 6, one side of which is connected to the ultrasonic probe 2, the second driving mechanism 6 is used to drive the ultrasonic probe 2 to move and make the detection surface of the ultrasonic probe 2 contact with the surface of the bridge column. After the second driving mechanism 6 drives the detection surface of the ultrasonic probe 2 to contact with the surface of the bridge column, the first driving mechanism 5 drives the covering cover 4 to move until the outer edge of its opening is in close contact with the surface of the bridge column, with the surface perpendicular to the direction in which the ultrasonic probe 2 moves toward one side of the bridge column as the projection surface, and the surface enclosed by the outer edge of the opening on the covering cover 4 is located on the projection surface, and the projection of the contact surface between the ultrasonic probe 2 and the bridge column on the projection surface covers the projection of the contact surface between the ultrasonic probe 2 and the bridge column on the projection surface;

[0036] A coupling liquid delivery mechanism 7, the coupling liquid delivery mechanism 7 is used to deliver coupling liquid to the inside of the cover 4;

[0037] A first eliminating mechanism 8, which is used to eliminate bubbles on the surface of the bridge column that will contact the ultrasonic probe 2;

[0038] The second eliminating mechanism 9 is used to eliminate bubbles on the detection surface of the ultrasonic probe 2 .

[0039] When performing ultrasonic nondestructive testing on bridge columns, due to the different shapes of bridge columns, there are inclined connecting columns and vertical columns. When performing ultrasonic nondestructive testing on the columns, coupling liquid needs to be coated on the surface of the columns. However, when there is damage on the surface of the inclined connecting columns of the bridge, such as the paint surface on the column surface peeling off and breaking, the coupling liquid cannot be well retained on the surface of the column, resulting in ensuring good contact between the ultrasonic sensor and the surface of the object to be tested, resulting in low precision and accuracy during the detection. For this reason, the present invention covers the contact between the ultrasonic probe 2 and the bridge column by a covering cover 4, and transports coupling liquid into the covering cover 4, so that the coupling liquid can completely fill the gap between the ultrasonic probe 2 and the bridge column, thereby improving the precision and accuracy of flaw detection of the bridge column;

[0040] However, after the coupling liquid is input into the cover 4, bubbles are easily generated at the contact surface between the coupling liquid and the column and the contact surface between the coupling liquid and the ultrasonic probe 2, and the bubbles are likely to interfere with the flaw detection of the ultrasonic probe 2. Therefore, the present invention eliminates the bubbles on the surface of the bridge column that will contact the ultrasonic probe 2 and the bubbles on the detection surface of the ultrasonic probe 2 through the first elimination mechanism 8 and the second elimination mechanism 9, so as to further improve the precision and accuracy of the flaw detection of the bridge column.

[0041] In one embodiment of the present invention, the climbing robot 3 includes a frame and two sets of clamps, the clamps are used to clamp the bridge columns, one side of the clamp is fixedly connected to a B arc bracket for supporting it, one side of the B arc bracket is connected to a guide member for limiting its movement along the length direction of the frame, and one side of the B arc bracket is connected to a moving driving member for driving its movement. The climbing robot 3 enables the device to move to various detection locations of the bridge columns, thereby improving the detection efficiency;

[0042] In one embodiment of the present invention, a sealing strip is provided at the opening edge of the cover 4;

[0043] In one embodiment of the present invention, an exhaust port is provided on the top of the cover 4, and the exhaust port is used to discharge the air inside the cover 4 when the coupling liquid is input into the cover 4;

[0044] In one embodiment of the present invention, the first driving mechanism 5 includes a rotating driving member 51, an arc-shaped rack 52, a mounting frame 53, an A telescopic driving member 54, a guide rod 55, an A arc-shaped bracket 56 and a gear 57. The A arc-shaped bracket 56 is rotatably mounted on the support frame 1, one side of the arc-shaped rack 52 is fixedly connected to the A arc-shaped bracket 56, one side of the arc-shaped rack 52 is meshed with the gear 57, the gear 57 is sleeved on the outside of the output shaft of the rotating driving member 51, the rotating driving member 51 is fixedly mounted on the support frame 1, the mounting frame 53 is fixedly mounted on the A arc-shaped bracket 56, one end of the guide rod 55 is fixedly connected to the cover 4, the outside of the guide rod 55 is slidably connected to the mounting frame 53, the moving end of the A telescopic driving member 54 is fixedly connected to the cover 4, and the A telescopic driving member 54 is fixedly mounted on the mounting frame 53;

[0045] During operation, the gear 57 is driven to rotate by the rotating driving member 51, and the gear 57 drives the A arc-shaped bracket 56 to rotate through the arc-shaped rack 52, so that the A arc-shaped bracket 56 drives the cover 4 to rotate through the mounting frame 53, the guide rod 55, and the A telescopic driving member 54, so that the cover 4 can be moved to various places where the bridge column is at the same height, and the A telescopic driving member 54 is extended to drive the cover 4 to move, so that the opening of the cover 4 can be attached to the surface of the bridge column;

[0046] In one embodiment of the present invention, the second driving mechanism 6 includes a B telescopic driving member 61, an elastic member 62, a fixed sleeve 63 and a slider 64, the outside of the fixed sleeve 63 is slidably connected to the covering cover 4, the inside of one end of the fixed sleeve 63 is fixedly connected to the elastic member 62, the end of the elastic member 62 is fixedly connected to the slider 64, the outside of the slider 64 is slidably connected to the inner wall of the fixed sleeve 63, one side of the slider 64 is fixedly connected to the moving end of the B telescopic driving member 61, the B telescopic driving member 61 is fixedly installed on the outside of the covering cover 4, and one side of the ultrasonic probe 2 is inserted into the inside of the fixed sleeve 63 and fixedly connected to the inner wall of the fixed sleeve 63;

[0047] During operation, the slider 64 is moved by the extension and retraction of the B telescopic driving member 61, and the slider 64 drives the fixing sleeve 63 to move through the elastic member 62, thereby driving the ultrasonic probe 2 to move, so that the detection surface of the ultrasonic probe 2 can be attached to the surface of the bridge column.

[0048] In one embodiment of the present invention, the coupling liquid delivery mechanism 7 includes a liquid storage tank 71, a small pump body 72, an A conduit 73 and a B conduit 74. The liquid storage tank 71 stores coupling liquid inside. One end of the A conduit 73 is inserted into the inner cavity of the liquid storage tank 71 and extends to the bottom of the inner cavity of the liquid storage tank 71. The other end of the A conduit 73 is connected to the inlet end of the small pump body 72. The small pump body 72 is fixedly mounted on the support frame 1. The outlet end of the small pump body 72 is connected to one end of the B conduit 74. The other end of the B conduit 74 is inserted into the inside of the cover 4.

[0049] When working, the small pump body 72 draws out the coupling liquid in the liquid storage tank 71 through the A conduit 73 and transports it to the inside of the covering cover 4 through the B conduit 74.

[0050] In one embodiment of the present invention, the first elimination mechanism 8 includes a moving assembly 81, a wiper A 82 and a receiving chamber 83. The receiving chamber 83 is fixedly installed inside the cover 4. An opening is provided on one side of the receiving chamber 83. The wiper A 82 is arranged inside the receiving chamber 83. One side of the wiper A 82 is connected to the moving assembly 81. The moving assembly 81 is used to drive the wiper A 82 to move out of the receiving chamber 83 and move one side of the wiper A 82 to the surface of the bridge column that is about to contact the ultrasonic probe 2.

[0051] During operation, the A wiper 82 is moved from the accommodating chamber 83 by the moving assembly 81, and one side of the A wiper 82 is moved to the detection surface of the ultrasonic probe 2. When the A wiper 82 contacts the detection surface of the ultrasonic probe 2, the A wiper 82 scrapes off the bubbles on the surface of the bridge column that is about to contact the ultrasonic probe 2.

[0052] In one embodiment of the present invention, the moving assembly 81 includes a C telescopic driving member 811, two A torsion springs 813, two A swing arms 814 and a mounting plate 812, the C telescopic driving member 811 is fixedly installed on the outside of the covering cover 4, the moving end of the C telescopic driving member 811 extends to the inside of the accommodating cabin 83 and is fixedly connected to the mounting plate 812, one end of the two A swing arms 814 are rotatably connected to the mounting plate 812 through the A rotating shaft, one end of the two A swing arms 814 are fixedly connected to the A wiping member 82, the two A torsion springs 813 are respectively sleeved on the outside of the two A rotating shafts, and one end of the two A torsion springs 813 are fixedly connected to the mounting plate 812, and the other ends of the two A torsion springs 813 are respectively fixedly connected to the adjacent A swing arms 814;

[0053] During operation, the mounting plate 812 is driven to move by the C telescopic driving member 811, and the mounting plate 812 drives the A wiping member 82 to move through the A swing arm 814. After the A wiping member 82 is moved out of the accommodating chamber 83, under the action of the A torsion spring 813, the A wiping member 82 sticks to the surface of the bridge column that will contact the ultrasonic probe 2.

[0054] In one embodiment of the present invention, the second elimination mechanism 9 includes two B torsion springs 91, two B swing arms 92, a B wiper 93 and a limit plate 94. One end of the two B swing arms 92 is connected to the mounting plate 812 through the B rotating shaft, and the ends of the two B swing arms 92 are fixedly connected to the B wiper 93. The two B torsion springs 91 are respectively sleeved outside the two B rotating shafts, and one end of the two B torsion springs 91 is fixedly connected to the mounting plate 812, and the other ends of the two B torsion springs 91 are respectively fixedly connected to the adjacent B swing arms 92;

[0055] One end of the limit plate 94 is fixedly connected to the outside of the accommodating chamber 83, and the side surface of the end of the limit plate 94 is close to the detection surface of the ultrasonic probe 2;

[0056] During operation, when the mounting plate 812 moves, the B wiper 93 is driven to move through the B swing arm 92. After the B wiper 93 moves, one side thereof sticks to the side of the limiting plate 94. The limiting plate 94 limits the moving path of the B wiper 93, so that the B wiper 93 can stick to the detection surface of the ultrasonic probe 2 and move. The B wiper 93 scrapes off the bubbles on the detection surface of the ultrasonic probe 2.

[0057] In one embodiment of the present invention, a robotic arm is also installed on the support frame 1, and an air nozzle is installed at the moving end of the robotic arm. The air nozzle is connected to an air pump through a pipeline. The air pump is installed on the support frame 1, and the air nozzle is driven to move by the robotic arm. The air pump provides gas to be ejected from the air nozzle to blow away dust and other interferences on the inspection surface of the bridge column to be inspected.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A road bridge detection device, comprising a support frame (1), an ultrasonic probe (2) and a climbing robot (3), wherein the support frame (1) is mounted on the climbing robot (3), and is characterized in that: Also includes: A covering cover (4), wherein the covering cover (4) is provided with an opening on a side close to the bridge column; A first driving mechanism (5) is connected to the cover (4) at one side. The first driving mechanism (5) is used to drive the cover (4) to move closer to or farther from one side of the bridge column. The first driving mechanism (5) comprises a rotating driving member (51), an arc-shaped rack (52), a mounting frame (53), an A telescopic driving member (54), a guide rod (55), an A arc-shaped bracket (56) and a gear (57). The A arc-shaped bracket (56) is rotatably mounted on the support frame (1). One side of the arc-shaped rack (52) is fixedly connected to the A arc-shaped bracket (56). The arc-shaped rack (52) is fixedly connected to the A arc-shaped bracket (56). One side of the bar (52) is meshed with a gear (57), the gear (57) is sleeved on the outside of the output shaft of the rotary drive member (51), the rotary drive member (51) is fixedly mounted on the support frame (1), the mounting frame (53) is fixedly mounted on the A arc-shaped bracket (56), one end of the guide rod (55) is fixedly connected to the cover (4), the outside of the guide rod (55) is slidably connected to the mounting frame (53), the moving end of the A telescopic drive member (54) is fixedly connected to the cover (4), and the A telescopic drive member (54) is fixedly mounted on the mounting frame (53); A second driving mechanism (6) is connected to the ultrasonic probe (2) on one side. The second driving mechanism (6) is used to drive the ultrasonic probe (2) to move and make the detection surface of the ultrasonic probe (2) contact the surface of the bridge column. After the second driving mechanism (6) drives the detection surface of the ultrasonic probe (2) to contact the surface of the bridge column, the first driving mechanism (5) drives the covering cover (4) to move until the outer edge of its opening is in close contact with the surface of the bridge column, with the surface perpendicular to the direction in which the ultrasonic probe (2) moves toward one side of the bridge column as the projection surface. The surface enclosed by the outer edge of the opening on the covering cover (4) is located on the projection surface. The contact surface between the projection covering ultrasonic probe (2) and the bridge column is on the projection surface. The second driving mechanism (6) comprises a telescopic driving member B (61), an elastic member (62), a fixing sleeve (63) and a sliding block (64); the fixing sleeve (63) is externally connected to the covering cover (4) in a sliding manner; the fixing sleeve (63) is internally fixedly connected to the elastic member (62) at one end; the elastic member (62) is fixedly connected to the sliding block (64); the sliding block (64) is externally connected to the inner wall of the fixing sleeve (63); one side of the sliding block (64) is fixedly connected to the movable end of the telescopic driving member B (61); the telescopic driving member B (61) is fixedly mounted on the outside of the covering cover (4); one side of the ultrasonic probe (2) is inserted into the fixing sleeve (63) and is fixedly connected to the inner wall of the fixing sleeve (63); A coupling liquid delivery mechanism (7), the coupling liquid delivery mechanism (7) being used to deliver coupling liquid to the interior of the covering cover (4); A first eliminating mechanism (8) for eliminating bubbles on the surface of the bridge column that is about to come into contact with the ultrasonic probe (2); The second elimination mechanism (9) is used to eliminate bubbles on the detection surface of the ultrasonic probe (2).

2. A road bridge detection device according to claim 1, characterized in that: The coupling liquid delivery mechanism (7) comprises a liquid storage tank (71), a small pump body (72), an A conduit (73) and a B conduit (74); the liquid storage tank (71) stores coupling liquid; one end of the A conduit (73) is inserted into the inner cavity of the liquid storage tank (71) and extends to the bottom of the inner cavity of the liquid storage tank (71); the other end of the A conduit (73) is connected to the inlet end of the small pump body (72); the small pump body (72) is fixedly mounted on the support frame (1); the outlet end of the small pump body (72) is connected to one end of the B conduit (74); the other end of the B conduit (74) is inserted into the interior of the cover (4).

3. A road bridge detection device according to claim 1, characterized in that: The first elimination mechanism (8) comprises a moving assembly (81), a wiper A (82) and a receiving chamber (83); the receiving chamber (83) is fixedly mounted inside the cover (4); an opening is provided on one side of the receiving chamber (83); the wiper A (82) is arranged inside the receiving chamber (83); one side of the wiper A (82) is connected to the moving assembly (81); the moving assembly (81) is used to drive the wiper A (82) to move out of the receiving chamber (83) and to move the wiper A (82) so that one side of the wiper A (82) is attached to the surface of the bridge column that is about to contact the ultrasonic probe (2).

4. A road bridge detection device according to claim 3, characterized in that: The moving assembly (81) comprises a C telescopic driving member (811), two A torsion springs (813), two A swing arms (814) and a mounting plate (812); the C telescopic driving member (811) is fixedly mounted on the outside of the covering cover (4); the moving end of the C telescopic driving member (811) extends into the interior of the accommodating cabin (83) and is fixedly connected to the mounting plate (812); one end of each of the two A swing arms (814) is rotationally connected to the mounting plate (812) via an A rotating shaft; one end of each of the two A swing arms (814) is fixedly connected to the A wiping member (82); the two A torsion springs (813) are respectively sleeved on the outside of the two A rotating shafts; one end of each of the two A torsion springs (813) is fixedly connected to the mounting plate (812); and the other ends of each of the two A torsion springs (813) are respectively fixedly connected to the adjacent A swing arms (814).

5. A road bridge detection device according to claim 4, characterized in that: The second elimination mechanism (9) comprises two B torsion springs (91), two B swing arms (92), a B wiping member (93) and a limit plate (94); one end of the two B swing arms (92) is connected to the mounting plate (812) via a B rotating shaft; the ends of the two B swing arms (92) are fixedly connected to the B wiping member (93); the two B torsion springs (91) are respectively sleeved outside the two B rotating shafts; one end of the two B torsion springs (91) is fixedly connected to the mounting plate (812); and the other ends of the two B torsion springs (91) are respectively fixedly connected to the adjacent B swing arms (92).

6. A road bridge detection device according to claim 5, characterized in that: One end of the limiting plate (94) is fixedly connected to the outside of the accommodating chamber (83), and the side surface of the end of the limiting plate (94) is close to the detection surface of the ultrasonic probe (2).

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