Bridge crack detection device

Abstract

According to the bridge crack detection device provided by the utility model, the lifting frame and the lifting driver are arranged to control the lifting of the probe of the ultrasonic crack detector, the sweeping plate is rotationally arranged at the bottom of the main mounting frame, and the lifting frame is spirally connected with the rotating shaft of the sweeping plate, so that the sweeping plate can be driven to swing by virtue of the lifting of the lifting frame; before the probe descends to the bridge floor, sundries in a bridge floor detection area can be swept out in advance through the sweeping plate, and the influence of the sundries on the bridge floor on detection is avoided. The bridge crack detection device disclosed by the utility model is simple and effective in structure, can automatically sweep sundries on a bridge floor in a detection area, ensures the detection accuracy, can also reduce the workload of manual sweeping, and improves the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge technical field, especially a bridge crack detection device. BACKGROUND

[0002] Crack is the early sign of bridge structure failure, timely detection can avoid catastrophic accidents and protect public life and property safety. The cost of repairing early small cracks is much lower than that of large-scale reinforcement or reconstruction later, and through crack monitoring and repair, the bridge performance degradation can be delayed and the reconstruction cost can be reduced.

[0003] In the prior art, the bridge crack detection method includes ultrasonic detection, impact echo method, optical fiber sensing, infrared thermal imaging and the like, wherein the ultrasonic crack detection technology occupies an important position in bridge maintenance due to its high precision and adaptability.

[0004] Ultrasonic detection needs the probe to be in close contact with the bridge deck, and the bridge deck often has gravel, garbage and other sundries, which will produce additional reflection signals at the interface between the sundries and the concrete, and will be misjudged as cracks, affecting the accuracy of detection. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a bridge crack detection device to solve the problem that sundries on the bridge deck will affect the accuracy of ultrasonic crack detection.

[0006] The utility model provides a bridge crack detection device, which comprises:

[0007] A main mounting frame composed of a vertical rod and a cross beam, a support leg extending forward is further connected to the vertical rod, and a detector positioning space is formed between the support leg and the vertical rod;

[0008] An ultrasonic crack detector, comprising a probe and a controller, the controller is fixedly arranged on the main mounting frame;

[0009] A lifting frame is horizontally arranged on the vertical rod and is slidingly connected with the vertical rod, a probe mounting frame is connected to the lifting frame, the probe is arranged on the probe mounting frame, and the probe mounting frame extends into the detector positioning space;

[0010] A lifting driver is fixedly arranged on the main mounting frame, and the movable end of the lifting driver is drivingly connected with the lifting frame;

[0011] A cleaning plate is arranged at the bottom of the main mounting frame and is rotatably connected with the main mounting frame through a rotating shaft, the rotating shaft is vertically arranged, a helical groove is arranged on the rotating shaft, a helical hole is arranged on the lifting frame, and the rotating shaft is helically connected with the helical hole.

[0012] Optionally, a sliding groove is arranged in the lifting frame, and the probe mounting frame extends into the sliding groove.

[0013] Optionally, a screw rod is arranged in the sliding groove in rotation, the probe mounting frame is threadedly connected with the screw rod, and a driving motor is further arranged on the lifting frame and is in transmission connection with the screw rod.

[0014] Optionally, a screw rod is arranged in the sliding groove in rotation, the probe mounting frame is threadedly connected with the screw rod, and an end of the screw rod extends out of the lifting frame and is provided with a rotating cap.

[0015] Optionally, the ultrasonic crack detector comprises at least two probes, and the number of the probe mounting frames is consistent with the number of the probes.

[0016] Optionally, the ultrasonic crack detector comprises two probes, the number of the probe mounting frames is consistent with the number of the probes, and the screw rod is matched with the screw rods of the two probe mounting frames in opposite directions.

[0017] Optionally, the bottom of the cleaning plate is provided with at least one of a hard-bristle brush, a steel wire brush and a rubber scraper.

[0018] Optionally, the coupling agent storage tank is arranged on the mounting beam arranged on the supporting leg and is located in front of the probe, and an output end of the coupling agent storage tank is connected to a discharging ring through a pipeline, and the discharging ring is fixedly arranged at the low end of the probe.

[0019] Optionally, the bottom of the main mounting frame is provided with a movable wheel, the upper portion of the main mounting frame is forwardly inclined to form an inclined mounting position, and the controller is arranged in the inclined mounting position.

[0020] Optionally, two groups of the cleaning plates are symmetrically arranged on both sides of the main mounting frame.

[0021] The bridge crack detection device provided by the utility model is provided with a lifting frame and a lifting driver to control the lifting of the probe of the ultrasonic crack detector, a cleaning plate is rotatably arranged at the bottom of the main mounting frame, the lifting frame is screw-connected with the rotating shaft of the cleaning plate, the lifting of the lifting frame can be used to drive the cleaning plate to swing, and the debris in the detection area of the bridge can be swept out by the cleaning plate before the probe is lowered to the bridge, so that the influence of the debris on the bridge on the detection is avoided. The bridge crack detection device has a simple and effective structure, can automatically sweep the debris on the detection area of the bridge, guarantees the detection accuracy, reduces the workload of manual sweeping and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1The utility model discloses a bridge crack detection device's three -dimensional structure schematic diagram for the embodiment of the utility model;

[0023] Figure 2 The utility model discloses a bridge crack detection device's first part three -dimensional structure schematic diagram for the embodiment of the utility model;

[0024] Figure 3 The utility model discloses a bridge crack detection device's second part three -dimensional structure schematic diagram for the embodiment of the utility model;

[0025] Figure 4 The utility model discloses a bridge crack detection device's third part three -dimensional structure schematic diagram for the embodiment of the utility model;

[0026] Figure 5 The utility model discloses a bridge crack detection device's fourth part three -dimensional structure schematic diagram for the embodiment of the utility model;

[0027] The following specific embodiment will be further described in the foregoing drawings of the utility model. Specific embodiment

[0028] In order to facilitate understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] In order to solve the problem that the sundries on the bridge deck can affect the accuracy of ultrasonic crack detection, the utility model provides a bridge crack detection device, through setting up the lifting frame and the lifting driver, the lifting of the probe of the ultrasonic crack detector is controlled, and the cleaning plate is rotatably arranged at the bottom of the main mounting frame, the lifting frame is screw connected with the rotating shaft of the cleaning plate, the lifting of the lifting frame can be used to drive the cleaning plate to swing, the sundries in the bridge deck detection area can be swept out by the cleaning plate before the probe is lowered to the bridge deck, the influence of the sundries on the bridge deck on the detection is avoided, the overall structure is simple and effective, the sundries on the detection area of the bridge deck can be automatically swept, the detection accuracy is ensured, the workload of manual cleaning is reduced, and the work efficiency is improved.

[0032] Specifically, please refer to Figures 1 to 5 , which is a schematic diagram of the structure of each part of the bridge crack detection device of the embodiment.

[0033] The main mounting frame 1 is composed of a vertical rod and a cross beam, and a support leg 4 extending forward is further connected to the vertical rod, so that a detector positioning space is formed between the support leg 4 and the vertical rod; the probe 10 of the ultrasonic crack detector is arranged in the detector positioning space, and the controller 2 thereof is fixedly arranged on the main mounting frame 1.

[0034] A lifting frame 7 is further slidably arranged on the vertical rod of the main mounting frame 1, the lifting frame 7 is horizontally arranged on the vertical rod, a probe mounting frame 9 is connected to the lifting frame 7, the probe 10 is arranged on the probe mounting frame 9, and the probe mounting frame 9 extends into the detector positioning space, so that the center of gravity is positioned in the middle part and the stability is improved.

[0035] A lifting driver 6 is further arranged on the main mounting frame 1, the lifting driver 6 is fixedly arranged on the main mounting frame 1, the movable end of the lifting driver 6 is in transmission connection with the lifting frame 7, so as to drive the lifting of the lifting frame 7 and further control the lifting of the probe 10, the height of the probe 10 can be adjusted according to the requirements of surface crack testing and deep crack testing, and in the storage state or during transfer, the probe 10 is positioned at a high position, so as to avoid the probe 10 from being damaged by knocking against other structures or the ground. The lifting driver 6 is, for example, a pneumatic cylinder, a linear servo motor or the like.

[0036] A cleaning plate 11 is further arranged at the bottom of the main mounting frame 1, as shown in Figure 3 , the cleaning plate 11 is rotatably connected with the main mounting frame 1 through a rotating shaft 12, the rotating shaft 12 is vertically arranged, a spiral groove is arranged on the rotating shaft 12, a spiral hole is arranged on the lifting frame 7, and the rotating shaft 7 is screw connected with the spiral hole. When the lifting frame 12 is lowered, the cleaning plate 11 can be synchronously driven to swing in the horizontal direction through the rotating shaft 12, and then the sundries on the surface of the bridge deck are swept away by the cleaning plate 11.

[0037] The bottom of the cleaning plate 11 can be provided with a bristle brush, a steel wire brush or a rubber scraper, and is in contact with the bottom surface of the bridge crack detection device to effectively remove debris on the detection surface.

[0038] To facilitate the driving of the cleaning plate 11, in the embodiment, two groups of cleaning plates 11 are symmetrically arranged on both sides of the main mounting frame 1, which can reduce the length of a single cleaning plate 11 and reduce the requirement for torque of rotation. The length of the cleaning plate 11 can be determined according to the size of the detection instrument placement space formed between the support leg 4 and the vertical rod. Since the cleaning plate 11 is a fan-shaped movable plate, in order to effectively cover the effective test area in the cleaning area, the two cleaning plates 11 can also partially overlap to increase the length of the cleaning area. Correspondingly, the cleaning plate 11 can also be arranged as an arc-shaped plate to avoid the overlapping area from blocking each other and to ensure the smoothness of the cleaning action.

[0039] The spiral direction of the spiral groove of the rotating shaft 12 can be determined according to the actual cleaning area and the starting position of the cleaning plate 11. To improve the cleaning effect, the cleaning plate 11 can be cleaned repeatedly. Correspondingly, the lifting frame can be lifted repeatedly, or the spiral groove can be continuously arranged in multiple segments, the spiral directions of adjacent segments are opposite, and the angle difference between the beginning and end of a single segment is, for example, 90 degrees, and the activity angle of the cleaning plate is 90 degrees. The activity angle can be set according to the specific situation.

[0040] To facilitate testing of different points, in the embodiment, as shown in Figure 2 The lifting frame 7 is provided with a sliding groove, and the probe mounting frame 9 extends into the sliding groove and is in sliding connection with the sliding groove, so that the probe mounting frame 9 can slide horizontally along the lifting frame 7, which can be used to comprehensively cover each point of the test area. When the bridge surface appears a pit type damage and the detection point needs to be adjusted, the position of the probe 10 can be adjusted by moving the probe mounting frame 9 transversely without adjusting the overall positioning position of the bridge crack detection device.

[0041] To facilitate the activity adjustment of the probe mounting frame 9, in the embodiment, a lead screw 8 is rotatably arranged in the sliding groove of the lifting frame 7, the probe mounting frame 9 is in threaded connection with the lead screw 8, and a driving motor (not shown in the figure) is further arranged on the lifting frame 7. The driving motor is in transmission connection with the lead screw 8, so that the driving motor automatically rotates the lead screw 8, and then the lead screw 8 automatically controls the transverse position of the probe mounting frame 9 and the probe 10 thereon.

[0042] Alternatively, the end of the lead screw 7 extends out of the lifting frame 7 and is provided with a rotating cap, so that the transverse position of the probe mounting frame 9 and the probe 10 thereon can be manually adjusted. The specific setting mode can be set according to the specific requirement.

[0043] In order to improve the detection efficiency, the ultrasonic crack detector can be provided with at least two probes 10, and the number of probe mounting racks 9 is consistent with the number of probes 10.

[0044] In the embodiment, the ultrasonic crack detector includes two probes 10, the screw segments of the lead screws 8 matched with the two probe mounting racks 9 have opposite screw directions, so that the test data of the two probes 10 have symmetrical characteristics, which facilitates mutual verification and improves the reliability of the test results.

[0045] In order to improve the accuracy of ultrasonic testing, it is generally necessary to fill a coupling agent between the probe 10 and the surface of the object to be tested, which can improve the image display and reduce the acoustic resistance. In order to facilitate the arrangement of the coupling agent, as shown in Figure 4 and Figure 5 a mounting beam is arranged on the support leg 4, and a coupling agent storage tank 14 is mounted on the mounting beam. The coupling agent storage tank 14 is located in front of the probe 10, which facilitates the balanced weight distribution. The output end of the coupling agent storage tank 14 is connected to a discharge ring 17 through a pipeline 16, and the discharge ring 17 is fixedly arranged at the lower end of the probe 10.

[0046] The bottom of the discharge ring 17 is provided with a plurality of discharge holes to facilitate uniform discharge. After the coupling agent is extruded through the discharge ring 17, the probe 10 can be driven to move laterally by the lead screw 8, so that the coupling agent can be spread out, or the coupling agent can be applied while moving and testing.

[0047] The pipeline 16 can also be positioned and installed through the space hole on the probe mounting rack 9 to avoid damage caused by dragging the ground.

[0048] In the embodiment, the coupling agent storage tank 14 is a piston type storage tank, and a pressing piston 15 is arranged thereon. The coupling agent in the coupling agent storage tank 14 can be extruded out by driving the pressing piston 15 through pressure. The coupling agent can be added to the coupling agent storage tank 14 by removing the pressing piston 15. The piston type storage tank can also be automatically extruded, for example, the pressing piston 15 is connected to a linear servo motor, which can automatically and quantitatively control the output of the coupling agent. The linear servo motor can be fixedly installed on the support leg 4. The output mode of the coupling agent in the coupling agent storage tank 14 can be selected according to specific needs.

[0049] In order to facilitate the movement of the bridge crack detection device, the bottom of the main mounting rack 1 is provided with a movable wheel 5, and the upper part of the main mounting rack 1 is inclined forward to form an inclined mounting position. The controller 2 is arranged in the inclined mounting position, which facilitates human-computer interaction and the vertical arrangement of the cable 3 between the controller 2 and the probe 10. The top of the main mounting rack 1 is provided with a handle to facilitate manual dragging.

[0050] The inclined mounting position can also be used for the installation of an industrial computer, which can be used for the control of devices such as motors and air cylinders.

[0051] The bridge crack detection device is simple and effective in structure, can automatically clean the sundries on the bridge surface of the detection area, guarantees detection accuracy, can also reduce the workload of manual cleaning, and improves work efficiency.

[0052] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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.

[0053] The above-described embodiments only express several specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A bridge crack detection device characterized by, The utility model relates to a kind of ultrasonic crack detector, including: Main mounting frame consisting of vertical pole and crossbeam, support leg extending to front is further connected on the vertical pole, to form the detector position space between the support leg and the vertical pole; Ultrasonic crack detector, including probe and controller, the controller is fixedly arranged on the main mounting frame; Lifting frame, cross in the vertical pole, and with the vertical pole sliding connection, probe mounting frame is connected on lifting frame, the probe is arranged on the probe mounting frame, the probe mounting frame extends to the detector position space and is arranged; Lifting driver, fixedly arranged on the main mounting frame, the active end of the lifting driver is drivingly connected with the lifting frame; Sweeping plate, arranged at the bottom of the main mounting frame, and rotatingly connected with the main mounting frame by pivot, the pivot is vertically arranged, the pivot is provided with helical groove, the lifting frame is provided with helical hole, the pivot is screw-connected with the helical hole.

2. The bridge crack detection apparatus according to claim 1, characterized by The lifting frame is provided with a sliding groove, and the probe mounting frame extends into the sliding groove.

3. The bridge crack detection apparatus according to claim 2, characterized by A lead screw is rotatably arranged in the sliding groove, the probe mounting frame is threadedly connected with the lead screw, and a driving motor is further arranged on the lifting frame and drivingly connected with the lead screw.

4. The bridge crack detection apparatus according to claim 2, characterized by A lead screw is rotatably arranged in the sliding groove, the probe mounting frame is threadedly connected with the lead screw, and an end of the lead screw extends out of the lifting frame and is provided with a rotating cap.

5. The bridge crack detection apparatus according to claim 2, characterized by The ultrasonic crack detector includes at least two probes, and the number of the probe mounting frames is consistent with the number of the probes.

6. The bridge crack detection apparatus according to claim 3 or 4, characterized by The ultrasonic crack detector includes two probes, the number of the probe mounting frames is consistent with the number of the probes, and the thread directions of the thread segments of the lead screw matched with the two probe mounting frames are opposite.

7. The bridge crack detection apparatus according to claim 1, characterized by The bottom of the sweeping plate is provided with at least one of a bristle brush, a steel wire brush and a rubber scraper.

8. The bridge crack detection apparatus according to claim 1, characterized by Further including: A coupling agent storage tank is arranged on the support leg, and the coupling agent storage tank is arranged on the mounting crossbeam and located in front of the probe, an output end of the coupling agent storage tank is connected to a discharge ring through a pipeline, and the discharge ring is fixedly arranged at the lower end of the probe.

9. The bridge crack detection apparatus according to claim 1, characterized by The bottom of the main mounting frame is provided with a movable wheel, and the upper part of the main mounting frame is forwardly inclined to form an inclined mounting position, and the controller is arranged in the inclined mounting position.

10. The bridge crack detection apparatus according to claim 1, characterized by Two groups of sweeping plates are symmetrically arranged on both sides of the main mounting frame.

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