Bridge bottom surface crack detection device

Abstract

The utility model discloses a bridge bottom crack detection device, which belongs to the field of bridge crack detection and comprises a rectangular substrate. The upper end face of the base plate is provided with two movable adjusting assemblies in parallel. The two movable adjusting assemblies each comprise a lead screw base arranged on the base plate, a lead screw is rotationally arranged in each lead screw base, and a sliding block base is arranged outside each lead screw in an engaged mode. According to the bridge bottom surface crack detection device disclosed by the utility model, the crack detection instrument body is driven by the mobile adjusting assembly to carry out mobile detection, so that cracks in a relatively large range on the bridge bottom surface can be detected, and a relatively large detection range at the bridge bottom can be covered by accurately controlling the movement of the crack detection instrument body; the requirements of multiple times of movement and adjustment are reduced, and the detection efficiency is improved; meanwhile, more accurate movement control can be provided for the crack detection instrument body, and centimeter-level or even higher-precision movement can be realized, so that the position, the length and the severity of the crack at the bottom of the bridge can be more accurately positioned.

Description

Technical Field

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

[0002] Bridge bottom crack detection refers to the process of detecting cracks on the bottom surface of the bridge structure (usually the lower structure of the bridge). Bridge bottom cracks may be caused by structural aging, load, earthquake and other factors. If not detected and repaired in time, it may cause further damage to the bridge structure and potential safety hazards. The purpose of bridge bottom crack detection is to detect cracks on the bottom surface of the bridge in time by using appropriate sensors and detection methods, and to assess their severity and impact on structural safety, so that appropriate maintenance and reinforcement measures can be taken to ensure the normal operation and safety of the bridge.

[0003] According to a Chinese patent publication numbered CN220082667U, a bridge bottom surface crack detection device is disclosed; the document solves the problem that when detecting cracks on a bridge, the crack detector cannot be rotated at multiple angles due to its fixed position, which makes it inconvenient to conduct a comprehensive inspection of all directions of the entire bridge;

[0004] Although the above cited patent has realized crack detection on the bottom surface of the bridge in actual use, it still has certain limitations in use. That is, the detection device in this document uses the pulley at the bottom to move during detection. For large bridges, the area that needs to be detected may be very large, and the method of using the pulley for advancement requires manual operation. During this period, the pulley needs to be gradually advanced to various positions on the bottom surface of the bridge for inspection. This process is relatively cumbersome and requires a lot of time and human resources. At the same time, in the process of using the pulley for advancement, due to the different operating skills and strength of the operators, the pulley may be offset when moving on the bottom surface; this may affect the accuracy of the detection results, and it is impossible to accurately judge the location, length and severity of the cracks. Therefore, a bridge bottom surface crack detection device is proposed to solve the above problems. Utility Model Content

[0005] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides a bridge bottom surface crack detection device, which has the advantages of accurate detection and can perform large-span detection on the bottom surface of the bridge.

[0006] To achieve the above-mentioned purpose, the utility model provides a bridge bottom surface crack detection device, comprising a rectangular substrate;

[0007] Two sets of movable adjustment components are arranged in parallel on the upper end surface of the base plate; the two sets of movable adjustment components each include a screw seat arranged on the base plate, a screw rod is rotatably arranged inside the screw seat, and a slider seat is meshedly arranged outside the screw rod;

[0008] A bearing seat is slidably mounted between the two movable adjustment components, a protection frame is mounted on the upper end surface of the bearing seat, a guide rod cylinder is mounted on the upper end surface of the protection frame, and a crack detection instrument body is mounted on the output end of the guide rod cylinder.

[0009] As a further improvement of the utility model, the bearing seat is arranged on the upper end surfaces of the two slider seats and is detachably connected to the slider seats by bolts. Two deep groove ball bearings are assembled on the screw seat, and the two ends of the screw rotate between the two deep groove ball bearings.

[0010] As a further improvement of the present invention, one end of the two screw rods passes through the adjacent screw seat and extends to the outside of the screw seat to be connected with a reciprocating motor, and the output end of the reciprocating motor is connected to one end of the screw rod.

[0011] As a further improvement of the utility model, two side rods are also mounted on the two screw seats, and the two side rods are arranged in parallel on both sides of the screw and penetrate the slider seat.

[0012] As a further improvement of the utility model, the protection frame is arranged in a rectangular shape and a groove is provided on the top thereof. The size of the groove is adapted to the crack detection instrument body and allows the crack detection instrument body to slide out.

[0013] As a further improvement of the utility model, a mounting seat is installed at the bottom of the base plate, two sets of pulleys are installed on both sides of the mounting seat, and the four sets of pulleys are arranged in a rectangular shape at the bottom of the base plate.

[0014] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0015] In actual use, when the user needs to detect cracks on the bottom of the bridge, the present invention can be used to lift the present application in parallel using a carrier or a lifting frame, and the substrate can be set in a vertical horizontal position. At this time, the user can connect the guide rod cylinder to an external air source, so that the guide rod cylinder drives the output end to lift the crack detection instrument body until the crack detection instrument body is close to the bottom of the bridge. Then, the user can drive the movable adjustment component to make the crack detection instrument body move in a straight line along the lateral travel range of the substrate, so as to realize the lateral detection of the bottom of the bridge by the crack detection instrument body. The movable adjustment component is used to drive the crack detection instrument body to move for detection, so as to realize the detection of cracks in a larger range on the bottom of the bridge. By accurately controlling the movement of the crack detection instrument body, a larger detection range of the bottom of the bridge can be covered, thereby reducing the need for multiple movements and adjustments and improving the detection efficiency.

[0016] Compared with the detection method in the cited document, the bridge bottom surface crack detection device of the utility model realizes not only a large-scale detection but also precise mobile detection on the basis of the detection method. Compared with the sliding propulsion method, the provided mobile adjustment component can provide more precise mobile control for the crack detection instrument body, and can realize centimeter-level or even higher precision movement. In this way, the position, length and severity of the cracks on the bottom of the bridge can be more accurately located, thereby improving the accuracy of the detection results, realizing an automated crack detection process, and reducing the tediousness of manual operation and detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall installation structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the mounting seat and the pulley at the bottom of the base plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the top view of the installation structure of the crack detection instrument body of the utility model on the bearing seat;

[0020] Figure 4 This is a schematic diagram of the installation structure of the crack detection instrument body and the bearing seat of the utility model.

[0021] In all the drawings, the same figure marks represent the same technical features, specifically: 1. Base plate; 2. Movable adjustment assembly; 21. Screw seat; 22. Deep groove ball bearing; 23. Screw; 24. Slider seat; 25. Reciprocating motor; 26. Side rod; 3. Bearing seat; 4. Protective frame; 5. Crack detection instrument body; 51. Guide rod cylinder; 6. Mounting seat; 7. Pulley. DETAILED DESCRIPTION

[0022] 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.

[0023] Example

[0024] Depend on Figure 1-4 Provided is a bridge bottom surface crack detection device, comprising a rectangular substrate 1;

[0025] Two sets of movable adjustment components 2 are arranged in parallel on the upper end surface of the base plate 1; the two sets of movable adjustment components 2 both include a screw seat 21 arranged on the base plate 1, a screw rod 23 is rotatably arranged inside the screw seat 21, and a slider seat 24 is meshedly arranged outside the screw rod 23;

[0026] A bearing seat 3 is slidably mounted between the two movable adjustment components 2 , a protective frame 4 is mounted on the upper end surface of the bearing seat 3 , a guide rod cylinder 51 is mounted on the upper end surface of the protective frame 4 , and a crack detection instrument body 5 is mounted on the output end of the guide rod cylinder 51 .

[0027] In the present embodiment, in actual use, when the substrate 1 is in a horizontal setting, the user can connect the guide rod cylinder 51 to an external air source, so that the guide rod cylinder 51 drives the output end to lift the crack detection instrument body 5 until the crack detection instrument body 5 is close to the bottom surface of the bridge, and then the user can drive the movable adjustment component 2 to make the crack detection instrument body 5 move in a straight line along the lateral stroke range of the substrate 1, so as to realize the lateral detection of the bottom of the bridge by the crack detection instrument body 5; by driving the crack detection instrument body 5 to move and detect through the movable adjustment component 2, a larger range of cracks on the bottom surface of the bridge can be detected, and by accurately controlling the movement of the crack detection instrument body 5, a larger detection range of the bottom of the bridge can be covered, reducing the need for multiple movements and adjustments, and improving the detection efficiency.

[0028] Furthermore, compared to the detection method in the cited document, the present application not only realizes large-scale detection on its basis, but also realizes precise mobile detection. Compared with the sliding propulsion method, the provided mobile adjustment component 2 can provide the crack detection instrument body 5 with more precise mobile control, and can achieve centimeter-level or even higher precision movement. In this way, the position, length and severity of the cracks at the bottom of the bridge can be more accurately located, thereby improving the accuracy of the detection results, and realizing an automated crack detection process, reducing the tediousness of manual operation and detection errors.

[0029] It should be noted that when inspecting the bottom of a specific bridge, since the height between each bridge and the ground is different, and the height of common bridges is usually higher, in order to better inspect the bottom surface of the bridge, in a preferred embodiment, the lifting method of the set substrate 1 can be lifted by a lift or a ladder. By lifting the application in parallel using a carrier or a lift, and making the set substrate 1 in a vertical horizontal setting, at this time, by making the crack detection instrument body 5 close to the bottom surface of the bridge, crack detection of the bottom surface of the bridge can be achieved. At the same time, in a preferred embodiment, the set guide rod cylinder 51 can further reduce the distance between the crack detection instrument body 5 and the bridge, thereby further enhancing the detection effect and detection accuracy.

[0030] Specifically, refer to Figure 1-3 The bearing seat 3 is arranged on the upper end surfaces of the two slider seats 24 and is detachably connected to the slider seats 24 through bolts. Two deep groove ball bearings 22 are assembled on the screw seat 21, and both ends of the screw rod 23 rotate between the two deep groove ball bearings 22.

[0031] In this embodiment, in actual use, the detachable connection between the supporting seat 3 and the two sliding block seats 24 allows the supporting seat 3 and the protective frame 4 to be quickly assembled, and at the same time, the crack detection instrument body 5 set on the protective frame 4 can be quickly disassembled and assembled. Since the detection device is used in outdoor detection when inspecting a bridge, the detection device of the present application can be better carried out for detection in the outside world through disassembly and assembly.

[0032] Specifically, refer to Figure 1-3 One end of each of the two screw rods 23 passes through the adjacent screw seat 21 and extends to the outside of the screw seat 21 to be connected with a reciprocating motor 25 , and the output end of the reciprocating motor 25 is connected to one end of the screw rod 23 .

[0033] In this embodiment, in actual use, the reciprocating motor 25 can be used to drive and control the screw rod 23. When controlling the moving adjustment component 2, the user connects the two reciprocating motors 25 to the motor controller so that the two reciprocating motors 25 rotate at the same frequency. At this time, the screw rod 23 connected to the output end of the reciprocating motor 25 can rotate accordingly.

[0034] The preferred power connection method between the reciprocating motor 25 and the controller is the prior art, and the control circuit can be implemented by simple programming by technicians in this field. It is common knowledge in this field and is only used without modification, so the control method and circuit connection will not be described in detail.

[0035] Specifically, refer to Figure 1-3Two side rods 26 are also mounted on the two screw seats 21 . The two side rods 26 are arranged in parallel on both sides of the screw 23 and penetrate the slider seat 24 .

[0036] In this embodiment, during use, the side rods 26 are used to laterally limit the slider seat 24. When the screw rod 23 rotates, it is connected to the support seat 3 and the two side rods 26 laterally limit the slider seat 24, so that the slider seat 24 can move in a straight line along the travel range of the screw rod 23; at this time, the slider seat 24 can drive the protective frame 4 and the crack detection instrument body 5 to move in a straight line.

[0037] Specifically, refer to Figure 4 The protection frame 4 is rectangular and has a groove on its top. The size of the groove matches the crack detection instrument body 5 and allows the crack detection instrument body 5 to slide out.

[0038] In this embodiment, in actual use, the protective frame 4 can effectively prevent external objects from directly colliding with and damaging the crack detection instrument body 5; in complex environments such as the field or construction sites, the crack detection instrument body 5 is often easily affected by the external environment, and the use of the protective frame 4 can effectively protect the protective frame 4 from accidental collision or damage;

[0039] Furthermore, in this embodiment, by controlling the movement of the guide rod cylinder 51, the height of the crack detection instrument body 5 can be adjusted; this is very useful for adapting to detection requirements at different heights. For example, when detecting cracks on the bottom surface of a bridge, different bridges may have different span heights, such as flat bridges and arched bridges. Through the lifting function of the guide rod cylinder 51, the height of the crack detection instrument body 5 can be easily adjusted to adapt to different bridge structures. More preferably, by using the guide rod cylinder 51 for lifting, manual operation can be reduced. The contact with the crack detection instrument body 5 reduces the risk of accidental injury. In addition, the guide rod cylinder 51 can provide a stable lifting force to ensure that the crack detection instrument body 5 remains balanced and stable during the lifting process, thereby increasing the safety of operation.

[0040] Specifically, refer to Figure 1-2 A mounting seat 6 is installed at the bottom of the base plate 1 , and two sets of pulleys 7 are installed on both sides of the mounting seat 6 . The four sets of pulleys 7 are arranged at the bottom of the base plate 1 in a rectangular shape.

[0041] In this embodiment, the substrate 1 can be stably moved by sliding the mounting base 6 and the pulley 7. When used outdoors, the mounting base 6 and the pulley 7 enable the crack detection instrument body 5 to be moved in multiple directions, which allows the operator to easily move the instrument to the desired position without turning or adjusting the direction, while improving the flexible use of the crack detection instrument body 5.

[0042] The utility model of the bridge bottom surface crack detection device:

[0043] Step 1: In actual use, when the user needs to detect cracks at the bottom of the bridge, the present application is lifted in parallel by using a carrier or a lifting frame, and the substrate 1 is set in a vertical horizontal position. At this time, the user can connect the guide rod cylinder 51 to an external air source, so that the guide rod cylinder 51 drives the output end to lift the crack detection instrument body 5 until the crack detection instrument body 5 is close to the bottom of the bridge. Then the user can drive the movable adjustment component 2 to make the crack detection instrument body 5 move in a straight line along the lateral travel range of the substrate 1, so as to realize the lateral detection of the bottom of the bridge by the crack detection instrument body 5;

[0044] Step 2: When controlling the movable adjustment component 2, the user connects the two reciprocating motors 25 to the motor controller so that the two reciprocating motors 25 rotate at the same frequency. At this time, the screw rod 23 connected to the output end of the reciprocating motor 25 can rotate accordingly. Due to the connection of the bearing seat 3 and the lateral limitation of the slider seat 24 by the two side rods 26, the set slider seat 24 can move in a straight line along the travel range of the screw rod 23. At this time, the bearing seat 3 installed on the slider seat 24 can drive the protective frame 4 and the crack detection instrument body 5 to move in a straight line as a whole.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge bottom surface crack detection device, characterized in that: It comprises a rectangular substrate (1); Two groups of movable adjustment components (2) are arranged in parallel on the upper end surface of the base plate (1); the two groups of movable adjustment components (2) each comprise a screw seat (21) arranged on the base plate (1), a screw rod (23) is rotatably arranged inside the screw seat (21), and a slider seat (24) is meshedly arranged outside the screw rod (23); A bearing seat (3) is slidably mounted between the two movable adjustment components (2); a protection frame (4) is mounted on the upper end surface of the bearing seat (3); a guide rod cylinder (51) is mounted on the upper end surface of the protection frame (4); and a crack detection instrument body (5) is mounted on the output end of the guide rod cylinder (51).

2. The bridge bottom surface crack detection device according to claim 1, characterized in that: The bearing seat (3) is arranged on the upper end surfaces of the two slider seats (24) and is detachably connected to the slider seats (24) via bolts; two deep groove ball bearings (22) are mounted on the screw seat (21); and the two ends of the screw rod (23) rotate between the two deep groove ball bearings (22).

3. The bridge bottom surface crack detection device according to claim 1, characterized in that: One end of each of the two screw rods (23) passes through the screw seat (21) adjacent thereto and extends to the outside of the screw seat (21) to be connected with a reciprocating motor (25), and the output end of the reciprocating motor (25) is connected to one end of the screw rod (23).

4. The bridge bottom surface crack detection device according to claim 1, characterized in that: The two screw seats (21) are also equipped with two side rods (26), and the two side rods (26) are arranged in parallel on both sides of the screw (23) and penetrate the slider seat (24).

5. The bridge bottom surface crack detection device according to claim 1, characterized in that: The protection frame (4) is arranged in a rectangular shape and has a groove on its top. The size of the groove is adapted to the crack detection instrument body (5) and allows the crack detection instrument body (5) to slide out.

6. The bridge bottom surface crack detection device according to claim 1, characterized in that: A mounting seat (6) is installed at the bottom of the base plate (1), and two sets of pulleys (7) are installed on both sides of the mounting seat (6). The four sets of pulleys (7) are arranged in a rectangular shape at the bottom of the base plate (1).

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