Bridge bottom surface crack detection device

Abstract

The utility model belongs to the technical field of bridge crack detection, and particularly relates to a bridge bottom surface crack detection device which comprises a base, an ultrasonic detector is installed on one side of the top of the base, a lifting mechanism is arranged on the base, a lifting plate is arranged at the upper end of the lifting mechanism, a rotating rod is rotatably installed on the lifting plate, a rotating disc is fixedly connected to the top end of the rotating rod, a fixing frame is fixedly connected to the rotating disc, and a sliding rail is fixedly connected to the top of the fixing frame. A sliding seat is slidably mounted on the sliding rail, a rubber column is fixedly connected to the sliding seat, a fixed circular ring is fixedly connected to the top end of the rubber column, and a detection probe is arranged in the fixed circular ring; during detection, the movement track of the detection probe can be adjusted as required, so that the detection probe can always move along the track of a crack, the crack can be better and comprehensively detected, the detection process is more stable and convenient, and the detection effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge crack detection, in particular to a bridge bottom surface crack detection device. Background Art

[0002] When the bridge foundation settles or shifts horizontally during long-term use, additional stress will be generated in the bridge structure, exceeding the tensile strength of the concrete structure, thereby causing cracks in the bridge structure. In order to ensure the safe operation of the bridge in the event of a collapse accident, the cracks on the bridge surface need to be regularly inspected, maintained and repaired.

[0003] A Chinese patent with publication number CN116837719A discloses a concrete bridge bottom surface crack detection device, which belongs to the field of bridge detection technology, including a crossbeam, a rolling support structure for supporting the crossbeam, a first support beam and a second support beam respectively arranged at both ends of the crossbeam, and the horizontal beams of the first support beam and the second support beam are both equipped with linear detection components, and the inner end of the horizontal beam is equipped with an arc detection component; the arc detection component includes a torsion reset device, a semicircular support frame, a slide seat, a first drive component, and a first crack detector, and the middle part of the semicircular support frame is connected to the horizontal beam through a torsion reset device; the device of the present invention can detect the bottom surface of the bridge while allowing the device to work continuously, thereby improving the detection efficiency.

[0004] The existing bridge bottom surface crack detection device has a certain distance from the bridge bottom surface to the detection operation surface, which causes the probe to be unable to move accurately along the crack trajectory during detection, making the detection process inconvenient and affecting the detection results. Therefore, a bridge bottom surface crack detection device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised by the above-mentioned background technology, the utility model proposes a bridge bottom surface crack detection device.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a bridge bottom surface crack detection device described in the utility model comprises a base; an ultrasonic detector is installed on one side of the top of the base, the base is provided with a lifting mechanism, the upper end of the lifting mechanism is provided with a lifting plate, a rotating rod is rotatably installed on the lifting plate, the top of the rotating rod is fixedly connected to a rotating disk, the rotating disk is fixedly connected to a fixed frame, the top of the fixed frame is fixedly connected to a slide rail, a sliding seat is slidably installed on the slide rail, a rubber column is fixedly connected to the sliding seat, the top of the rubber column is fixedly connected to a fixed ring, a detection probe is arranged in the fixed ring, and the detection probe is installed on the top of the rubber column, four mounting seats are fixedly connected to the fixed ring, each mounting seat is hinged with a guide wheel, a second motor is installed on the inner side wall of the fixed frame, the output end of the second motor is connected to a rotating shaft, A third gear is installed, and a rack is installed on the side wall of the sliding seat, and the rack and the third gear are meshed with each other. When detecting cracks in the bridge, the detection probe and the guide wheel are first moved upward by the action of the lifting mechanism until the guide wheel moves to contact the bridge ground, and then the third gear is rotated by the operation of the second motor. Under the action of the rack, the sliding seat moves along the slide rail, and then the guide wheel drives the detection probe to translate along the crack trajectory. When the direction of the crack trajectory changes, the first motor is operated to make the second gear drive the first gear to rotate, and then the rotating rod drives the rotating disk and the detection probe to rotate accordingly, so that the movement trajectory of the detection probe can be adjusted according to needs, so that the detection probe can always move along the crack trajectory, so that the cracks can be better detected comprehensively, the detection process is more stable and convenient, and the detection effect is greatly improved.

[0007] Preferably, a first gear is mounted on the outer circumferential surface of the rotating rod, a first motor is installed on the lifting plate, a second gear is installed on the output end of the first motor, and the first gear and the second gear are meshed with each other. When the device is used, the movement trajectory of the detection probe can be adjusted as needed through the operation of the first motor, so that the detection probe can always move accurately along the trajectory of the crack, which is convenient for subsequent accurate detection of the crack.

[0008] Preferably, the lifting mechanism comprises a T-shaped track, a sliding sleeve is sleeved on the T-shaped track, a pneumatic cylinder is installed on the base, a pneumatic rod is assembled on the active end of the pneumatic cylinder, the other end of the pneumatic rod is fixedly connected to the sliding sleeve, a second fixed seat is fixedly connected to the sliding sleeve, a first swing rod is hinged in the first fixed seat, a second swing rod is hinged in the second fixed seat, a plurality of groups of first swing rods and second swing rods are staggered and rotatably connected in the vertical direction, wherein the first swing rod and the second swing rod at the same horizontal position are cross-jointed in an X shape, and the middle intersection position of the first swing rod and the second swing rod is connected by a pin. The nails are rotatably connected, and the top end of the first swing rod at the top is rotatably installed in the third fixed seat by a pin, and the top end of the second swing rod at the top is rotatably installed in the fourth fixed seat by a pin, and the third fixed seat and the fourth fixed seat are cooperated and fixedly connected with a lifting plate. When lifting, the pneumatic cylinder is operated to make the pneumatic rod drive the sliding sleeve to move along the T-shaped track. With the cooperation of multiple groups of first swing rods and second swing rods, the lifting plate is moved vertically upward, and then the detection probe is also moved upward until it moves to the bottom surface of the bridge, and the pneumatic cylinder stops working, so that the bridge that cannot be heightened can be inspected.

[0009] The utility model is beneficial in that:

[0010] 1. When the utility model detects cracks on a bridge, the detection probe and the guide wheel are first moved upward by the action of the lifting mechanism until the guide wheel moves to contact the bridge ground, and then the third gear is rotated by the operation of the second motor, and the sliding seat is moved along the slide rail under the action of the rack, so that the guide wheel drives the detection probe to translate along the crack track. When the direction of the crack track changes, the first motor is operated to drive the second gear to rotate the first gear, and then the rotating rod drives the rotating disk and the detection probe to rotate accordingly, so that the motion track of the detection probe can be adjusted according to needs, so that the detection probe can always move along the crack track, so that the crack can be better detected comprehensively, the detection process is more stable and convenient, and the detection effect is greatly improved;

[0011] 2. When the utility model is lifting, the pneumatic cylinder is operated to make the pneumatic rod drive the sliding sleeve to move along the T-shaped track. With the cooperation of multiple sets of first swing arms and second swing arms, the lifting plate is moved vertically upward, and then the detection probe is also moved upward until it moves to the bottom surface of the bridge. The pneumatic cylinder stops working, so that the bridge that cannot be raised can be inspected. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the detection device;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the meshing mechanism;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection probe assembly;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the lifting mechanism.

[0017] In the figure: 1. base; 2. ultrasonic detector; 3. lifting plate; 4. rotating rod; 5. rotating disk; 6. fixed frame; 7. slide rail; 8. sliding seat; 9. rubber column; 10. fixed ring; 11. detection probe; 12. mounting seat; 13. guide wheel; 14. second motor; 15. third gear; 16. rack; 17. first motor; 18. second gear; 19. T-shaped track; 20. sliding sleeve; 21. pneumatic cylinder; 22. pneumatic rod; 23. first fixed seat; 24. second fixed seat; 25. first swing rod; 26. second swing rod; 27. third fixed seat; 28. fourth fixed seat; 29. ​​first gear. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3As shown, a bridge bottom surface crack detection device comprises a base 1; an ultrasonic detector 2 is installed on one side of the top of the base 1; a lifting mechanism is provided on the base 1; a lifting plate 3 is provided on the upper end of the lifting mechanism; a rotating rod 4 is rotatably installed on the lifting plate 3; a rotating disk 5 is fixedly connected to the top of the rotating rod 4; a fixed frame 6 is fixedly connected to the rotating disk 5; a slide rail 7 is fixedly connected to the top of the fixed frame 6; a sliding seat 8 is slidably installed on the slide rail 7; a rubber column 9 is fixedly connected to the sliding seat 8; a fixed ring 10 is fixedly connected to the top of the rubber column 9; A detection probe 11 is arranged in 10, and the detection probe 11 is installed at the top of the rubber column 9, four mounting seats 12 are fixedly connected to the fixed ring 10, and a guide wheel 13 is hinged in each mounting seat 12, a second motor 14 is installed on the inner side wall of the fixed frame 6, and the output end of the second motor 14 is connected to a rotating shaft, and a third gear 15 is installed on the rotating shaft, a rack 16 is installed on the side wall of the sliding seat 8, and the rack 16 and the third gear 15 are meshed with each other, and a first gear 29 is mounted on the outer circumferential surface of the rotating rod 4, and the lifting plate 3 is provided with a first motor 17, and a second gear 18 is provided at an output end of the first motor 17, and the first gear 29 meshes with the second gear 18; when detecting cracks in the bridge, the detection probe 11 and the guide wheel 13 are first moved upward by the action of the lifting mechanism until the guide wheel 13 moves to contact the bridge ground, and then the third gear 15 is rotated by the operation of the second motor 14, and the sliding seat 8 is moved along the slide rail 7 under the action of the rack 16, so that the guide wheel 13 drives the detection probe 11 to translate along the crack track, and when the direction of the crack track changes, the first motor 17 is operated to drive the second gear 18 to drive the first gear 29 to rotate, and then the rotating rod 4 drives the rotating disk 5 and the detection probe 11 to rotate accordingly, so that the motion track of the detection probe 11 can be adjusted according to needs, so that the detection probe 11 can always move along the crack track, so that the crack can be better detected comprehensively, the detection process is more stable and convenient, and the detection effect is greatly improved.

[0020] See also Figure 4As shown, the lifting mechanism includes a T-shaped track 19, a sliding sleeve 20 is sleeved on the T-shaped track 19, a pneumatic cylinder 21 is installed on the base 1, a pneumatic rod 22 is assembled on the active end of the pneumatic cylinder 21, and the other end of the pneumatic rod 22 is fixed to the sliding sleeve 20, a first fixed seat 23 is fixed to the base 1, a second fixed seat 24 is fixed to the sliding sleeve 20, a first swinging rod 25 is hinged in the first fixed seat 23, and a second swinging rod 26 is hinged in the second fixed seat 24, and multiple groups of first swinging rods 25 and second swinging rods 26 are staggered and rotatably connected in the vertical direction, wherein the first swinging rods 25 and the second swinging rods 26 at the same horizontal position are cross-spliced ​​in an X shape, and the middle of the first swinging rods 25 and the second swinging rods 26 The cross position is connected by pin rotation, the top of the first swing rod 25 at the top is installed in the third fixed seat 27 by pin rotation, and the top of the second swing rod 26 at the top is installed in the fourth fixed seat 28 by pin rotation, and the third fixed seat 27 and the fourth fixed seat 28 are cooperated to fix the lifting plate 3; when lifting, the pneumatic cylinder 21 is operated to make the pneumatic rod 22 drive the sliding sleeve 20 to move along the T-shaped track 19, and with the cooperation of multiple groups of first swing rods 25 and second swing rods 26, the lifting plate 3 is moved vertically upward, and then the detection probe 11 is also moved upward until it moves to the bottom surface of the bridge, and the pneumatic cylinder 21 stops working, so that the bridge that cannot be raised can be detected.

[0021] Working principle: In the existing bridge bottom crack detection device, since the bridge bottom is at a certain distance from the detection operation surface, the probe cannot be accurately moved along the crack trajectory during detection, the detection process is inconvenient, and the detection result is affected; therefore, a bridge bottom crack detection device is proposed to address the above problems; when detecting bridge cracks, first, the detection probe 11 and the guide wheel 13 are moved upward by the lifting mechanism until the guide wheel 13 moves to contact the bridge ground, and then the third gear 15 is rotated by the second motor 14, and the sliding seat 8 is moved along the slide rail 7 under the action of the rack 16, so that the guide wheel 13 drives the detection probe 11 to translate along the crack trajectory. When the direction of the crack trajectory changes, the first motor 17 is operated to drive the second gear 18 to drive the first gear 29 to rotate, and then the rotating rod 4 drives the rotating disk 5 and the detection probe 11 to rotate accordingly, so that the motion trajectory of the detection probe 11 can be adjusted as needed, so that the detection probe 11 can always move along the crack trajectory, so that the cracks can be better detected comprehensively, the detection process is more stable and convenient, and the detection effect is greatly improved;

[0022] When lifting, the pneumatic cylinder 21 operates to make the pneumatic rod 22 drive the sleeve 20 to move along the T-shaped track 19. With the cooperation of multiple sets of first swing rods 25 and second swing rods 26, the lifting plate 3 moves vertically upward, and then the detection probe 11 also moves upward until it moves to the bottom surface of the bridge. The pneumatic cylinder 21 stops working, so that the bridge that cannot be raised can be inspected.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A bridge bottom surface crack detection device, characterized in that: The invention comprises a base (1); an ultrasonic detector (2) is installed on one side of the top of the base (1); a lifting mechanism is provided on the base (1); a lifting plate (3) is provided on the upper end of the lifting mechanism; a rotating rod (4) is rotatably installed on the lifting plate (3); a rotating disk (5) is fixedly connected to the top of the rotating rod (4); a fixed frame (6) is fixedly connected to the rotating disk (5); a sliding rail (7) is fixedly connected to the top of the fixed frame (6); a sliding seat (8) is slidably installed on the sliding rail (7); a rubber column (9) is fixedly connected to the sliding seat (8); a fixed ring (9) is fixedly connected to the top of the rubber column (9); 10), a detection probe (11) is arranged in the fixed ring (10), and the detection probe (11) is installed on the top of the rubber column (9), four mounting seats (12) are fixedly connected to the fixed ring (10), and a guide wheel (13) is hinged in each mounting seat (12), a second motor (14) is installed on the inner side wall of the fixed frame (6), the output end of the second motor (14) is connected to a rotating shaft, and a third gear (15) is installed on the rotating shaft, and a rack (16) is installed on the side wall of the sliding seat (8), and the rack (16) and the third gear (15) are meshed with each other.

2. A bridge bottom surface crack detection device according to claim 1, characterized in that: A first gear (29) is mounted on the outer circumferential surface of the rotating rod (4), a first motor (17) is mounted on the lifting plate (3), a second gear (18) is mounted on the output end of the first motor (17), and the first gear (29) and the second gear (18) are meshed with each other.

3. A bridge bottom surface crack detection device according to claim 1, characterized in that: The lifting mechanism comprises a T-shaped track (19), a sliding sleeve (20) is sleeved on the T-shaped track (19), a pneumatic cylinder (21) is installed on the base (1), a pneumatic rod (22) is mounted on the active end of the pneumatic cylinder (21), and the other end of the pneumatic rod (22) is fixedly connected to the sliding sleeve (20).

4. A bridge bottom surface crack detection device according to claim 1, characterized in that: A first fixed seat (23) is fixedly connected to the base (1), a second fixed seat (24) is fixedly connected to the sliding sleeve (20), a first swinging rod (25) is hingedly connected inside the first fixed seat (23), and a second swinging rod (26) is hingedly connected inside the second fixed seat (24).

5. A bridge bottom surface crack detection device according to claim 4, characterized in that: A plurality of groups of first swinging rods (25) and second swinging rods (26) are connected in a staggered rotational manner in a vertical direction, wherein the first swinging rods (25) and second swinging rods (26) at the same horizontal position are cross-jointed in an X shape, and the middle cross position of the first swinging rods (25) and the second swinging rods (26) are connected in rotational manner via a pin.

6. A bridge bottom surface crack detection device according to claim 4, characterized in that: The top end of the first swinging rod (25) at the top is rotatably mounted in the third fixing seat (27) through a pin, and the top end of the second swinging rod (26) at the top is rotatably mounted in the fourth fixing seat (28) through a pin. The third fixing seat (27) and the fourth fixing seat (28) are matched and fixedly connected with a lifting plate (3).

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