A component for detecting the width of structural cracks in concrete components

Abstract

This invention provides a component for detecting the width of structural cracks in concrete components, solving problems related to concrete crack width detection. It includes a detection probe with a handle and a camera. A gimbal stabilization component is installed between the camera and the detection probe. A fixed base is connected to the end of the handle, and a rotating component is provided between the fixed base and the handle. This invention has advantages such as good detection effect and structural stability.

Description

Technical Field

[0001] This utility model belongs to the field of concrete testing technology, specifically relating to a component for detecting the width of structural cracks in concrete components. Background Technology

[0002] Cracks are a common defect in concrete structures of buildings and transportation engineering, especially in critical infrastructure such as bridges, tunnels, and road retaining walls. The presence of cracks affects the integrity, durability, and seismic performance of these structures, significantly reducing their quality. On the one hand, cracks have a negative impact on the aesthetics and psychology of residents and users; on the other hand, if left unattended, they can potentially cause unnecessary accidents, with particularly serious consequences for transportation infrastructure, potentially endangering public safety. Currently, common crack detection methods mainly involve professionals using specialized instruments or traditional tools such as crack microscopes and steel rulers to measure crack width. However, manual detection methods are slow, difficult, require expensive equipment, and have a limited number of qualified personnel, thus failing to meet the monitoring requirements of a large number of buildings and transportation infrastructure cracks. While computer vision detection methods are available, existing systems lack the necessary image acquisition components to achieve long-term crack tracking, which is particularly critical for transportation engineering structures that require long-term service.

[0003] To address the shortcomings of existing technologies, researchers have conducted long-term research and proposed various solutions. For example, Chinese patent literature discloses a crack width detector [201710299241.4], which includes a detector body, a transmission lever, a crack width probe, and a scale display assembly. The fulcrum of the transmission lever is fixed inside the detector body, and the length of the driving section of the transmission lever is less than the length of the driven section. One end of the crack width probe is hinged to the driving section, and the other end of the crack width probe extends out of the detector body to penetrate into the interior of the surface crack from the crack opening and is held on both sides of the crack opening. The crack width probe has a probe head, and the distance from the center of any cross-section of the crack width probe to the probe head corresponds to the area of ​​the cross-section.

[0004] The above solution has solved the problem of crack width detection to some extent, but it still has many shortcomings, such as the inability to visually track cracks. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed structural crack width detection component for concrete components that facilitates crack image acquisition.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a structural crack width detection component for concrete components, including a detection probe, the detection probe having a handle and a camera, a gimbal stabilization component installed between the camera and the detection probe, a fixed base connected to the end of the handle, and a rotating component provided between the fixed base and the handle.

[0007] In the above-mentioned concrete structural crack width detection component, the detection probe has a built-in MCU module, and the detection probe is equipped with a display screen and touch panel connected to the MCU module. The detection probe has a built-in data communication module, power supply module and storage module connected to the MCU module. The MCU module is connected to the gimbal stabilization component and rotation component through the motion control module.

[0008] In the above-mentioned concrete structural crack width detection component, the gimbal stabilization component includes a movable groove set on the top of the detection probe, a movable cylinder rotatably installed in the movable groove and driven to rotate by a movable motor; a movable hole is opened in the middle of the movable cylinder, a movable block that can swing within the axial plane range of the movable cylinder is movably installed in the movable hole, a camera is installed on the movable block, and a swing component is installed between the movable block and the movable cylinder.

[0009] In the above-mentioned concrete structural crack width detection component, the swing component includes an electric push rod installed in the movable cylinder. The telescopic end of the electric push rod is connected to a swing connecting rod parallel to the central axis of the movable cylinder. A swing rack is provided on the swing connecting rod. The swing rack is driven by a speed-changing gear set meshing with a swing toothed disc fixed at the end of the movable block.

[0010] In the above-mentioned concrete structural crack width detection component, a fixed base is rotatably mounted with several flip-up support legs. The support legs are arranged symmetrically with respect to the fixed base. The handle has a receiving groove for the support legs to be inserted. A damping element is installed between the support legs and the fixed base.

[0011] In the aforementioned concrete structural crack width detection component, the support legs and the outer side of the handle are provided with an anti-slip layer.

[0012] In the above-mentioned concrete structural crack width detection component, the rotating component includes a rotating motor installed in a fixed base, the output end of the rotating motor is connected to a handle, and the fixed base is equipped with a conductive slip ring connected to the rotating motor.

[0013] In the aforementioned concrete structural crack width detection component, the camera is equipped with a supplementary light, which moves synchronously with the camera along with the gimbal stabilization component.

[0014] In the aforementioned concrete structural crack width detection assembly, the outer side of the detection probe is covered with a waterproof layer.

[0015] In the aforementioned concrete structural crack width detection component, the detection probe is equipped with charging and communication ports.

[0016] Compared with existing technologies, the advantages of this invention are: the camera can be flexibly adjusted in orientation to achieve continuous tracking of cracks, thereby ensuring the accuracy of visual image detection of crack width; the detection probe can be handheld or fixed in place, making it convenient to apply to different concrete components; and it has a built-in independent power supply module and data communication module, facilitating remote monitoring of concrete components. Attached Figure Description

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

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the present invention;

[0020] Figure 4 This is another partial cross-sectional view of the present invention;

[0021] Figure 5 This is the control principle diagram of this utility model;

[0022] In the diagram, the components are: 1. Detection probe; 11. MCU module; 12. Display screen; 13. Touch panel; 14. Data communication module; 15. Power module; 16. Storage module; 17. Motion control module; 2. Handle; 3. Camera; 4. Gimbal stabilization assembly; 41. Movable slot; 42. Movable cylinder; 43. Movable motor; 44. Movable hole; 45. Movable block; 46. Electric push rod; 47. Swinging linkage; 48. Swinging rack; 49. Swinging gear plate; 5. Fixed base; 51. Support leg; 52. Receiving slot; 53. Damping element; 6. Rotating assembly; 61. Rotating motor; 62. Conductive slip ring; 7. Charging and communication port. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1-5 As shown, a structural crack width detection component for concrete members includes a detection probe 1. The detection probe 1 has an ergonomically designed handle 2 and a high-resolution camera 3 with macro capabilities. A gimbal stabilization component 4 is installed between the camera 3 and the detection probe 1 to actively counteract handheld shaking and ensure clear and stable images. A fixed base 5 is connected to the end of the handle 2, and a rotating component 6 is provided between the fixed base 5 and the handle 2, allowing the handle 2 and the probe body to rotate continuously 360° relative to the fixed base 5 for convenient multi-angle detection.

[0025] Specifically, the detection probe 1 has a built-in MCU module 11, which serves as the core controller responsible for image processing, command parsing, and equipment control. Externally mounted on the detection probe 1 is a high-brightness, anti-glare display screen 12 connected to the MCU module 11, and a touch panel 13 supporting multi-touch and glove operation modes, used to display crack images, measurement results, and provide an operating interface in real time. The detection probe 1 also has a built-in data communication module 14 supporting Wi-Fi, Bluetooth, and wired communication, a power module 15 with a high-capacity lithium battery and intelligent power management circuitry, and a large-capacity, high-speed read / write storage module 16, connected to the MCU module 11, used to store raw images, measurement data, and operation logs. The MCU module 11 is connected to the gimbal stabilization component 4 and the rotation component 6 via a high-precision, low-latency motion control module 17, precisely driving the relevant motors to perform stabilization and rotation actions.

[0026] Specifically, the gimbal stabilization component 4 includes a precision-machined movable groove 41 located on top of the detection probe 1. A movable cylinder 42 is rotatably mounted in the movable groove 41 via a high-precision crossed roller bearing. The movable cylinder 42 is driven to rotate by a movable motor 43 with feedback from an integrated encoder, thereby achieving stable rotation control of the camera 3 around the vertical Z-axis. A movable hole 44 is opened in the middle of the movable cylinder 42. A movable block 45 that can swing within the axial plane range of the movable cylinder 42 is movably mounted in the movable hole 44. The camera 3 is firmly mounted on the movable block 45. A swinging component for controlling the swinging of the movable block 45 in the pitch direction is installed between the movable block 45 and the movable cylinder 42.

[0027] Furthermore, the swing assembly includes a high-precision, low-noise electric push rod 46 installed inside the movable cylinder 42. The telescopic end of the electric push rod 46 is connected to a rigid swing link 47 parallel to the central axis of the movable cylinder 42. The swing link 47 is provided with a swing rack 48 with precision teeth. The swing rack 48 is driven by a gear set with a specific reduction ratio and meshes with a fan-shaped swing gear 49 coaxially fixed at the end of the movable block 45, so as to accurately convert the linear motion of the electric push rod 46 into the pitch swing of the movable block 45.

[0028] Furthermore, the fixed base 5 is rotatably mounted with several independent or linked rotating support legs 51 via a hinge structure. The support legs 51 are arranged in a typical triangular or quadrangular central symmetrical arrangement relative to the fixed base 5, providing a stable support platform. The handle 2 has receiving slots 52 that match the shape of the support legs 51 for them to be inserted, facilitating storage and carrying. An adjustable hydraulic or rotary damping element 53 is installed between the support legs 51 and the fixed base 5 to ensure that the support legs 51 are stable in position after being extended, preventing accidental retraction, while allowing the user to apply appropriate force for opening and closing operations.

[0029] In addition, the support leg 51 and the outer side of the handle 2 are provided with a TPU or silicone anti-slip layer with a high coefficient of friction to enhance the stability and operating comfort when holding and supporting the hand.

[0030] Meanwhile, the rotating assembly 6 includes a rotating motor 61 with high-precision position feedback, such as a photoelectric encoder, mounted within the fixed base 5. The output of the rotating motor 61 is connected to the bottom of the handle 2 via a coupling or reduction mechanism, providing precise rotational driving force. The fixed base 5 is equipped with a multi-channel, low-contact-resistance conductive slip ring 62 connected to the rotating motor 61, ensuring continuous and reliable transmission of power and control signals from the motion control module 17 during the infinite rotation of the handle 2.

[0031] As can be seen, the camera 3 is equipped with an LED fill light 31 with adjustable brightness and selectable color temperature. The fill light 31 moves synchronously with the camera 3 along with the gimbal stabilization component 4 through a rigid connector, always providing sufficient and consistent lighting for the camera area, which is especially suitable for detection environments with insufficient light or special detection needs.

[0032] It is evident that the outer side of the detection probe 1 is covered with a silicone sealing ring and a waterproof coating that meet the IP67 or higher protection standards, effectively preventing dust intrusion and water splashes, and adapting to the harsh environment of the construction site.

[0033] Preferably, the detection probe 1 is equipped with a charging and communication port 7 using a Type-C or dedicated waterproof aviation plug, which supports fast charging and high-speed data transmission.

[0034] The principle of this embodiment is as follows: the gimbal stabilization component 4 ensures measurement accuracy, the dual-axis structure combined with motor feedback control enables the camera 3 to track crack changes, the rotating component 6 drives the detection probe 1 to rotate as a whole, thereby obtaining a larger image acquisition range, and with the fixed base 5 that can be placed and fixed, the concrete component can be monitored at a fixed point.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as detection probe 1, MCU module 11, display screen 12, touch panel 13, data communication module 14, power module 15, storage module 16, motion control module 17, grip 2, camera 3, gimbal stabilization assembly 4, movable slot 41, movable cylinder 42, movable motor 43, movable hole 44, movable block 45, electric push rod 46, swing linkage 47, swing rack 48, swing gear plate 49, fixed base 5, support leg 51, receiving groove 52, damping element 53, rotating assembly 6, rotating motor 61, conductive slip ring 62, charging and communication port 7, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A structural crack width detection assembly for concrete members comprising a detection probe (1) having a handle (2) and a camera head (3), characterized in that, A gimbal stabilization assembly (4) is installed between the camera (3) and the detection probe (1), a fixed base (5) is connected to the end of the handle (2), and a rotating assembly (6) is provided between the fixed base (5) and the handle (2).

2. A structural crack width detection assembly for a concrete member according to claim 1, wherein The detection probe (1) has a built-in MCU module (11). The detection probe (1) is externally equipped with a display screen (12) and a touch panel (13) connected to the MCU module (11). The detection probe (1) has a built-in data communication module (14), a power module (15) and a storage module (16) connected to the MCU module (11). The MCU module (11) is connected to the gimbal stabilization component (4) and the rotation component (6) through the motion control module (17).

3. A structural crack width detection assembly for a concrete member as claimed in claim 1, wherein, The gimbal stabilization component (4) includes a movable groove (41) set on the top of the detection probe (1), a movable cylinder (42) is rotatably installed in the movable groove (41), and the movable cylinder (42) is driven to rotate by a movable motor (43); a movable hole (44) is opened in the middle of the movable cylinder (42), and a movable block (45) that can swing within the axial plane range of the movable cylinder (42) is movably installed in the movable hole (44); the camera (3) is mounted on the movable block (45), and a swinging component is installed between the movable block (45) and the movable cylinder (42).

4. A structural crack width detection assembly for a concrete member according to claim 3, wherein The swing assembly includes an electric push rod (46) installed inside the movable cylinder (42). The telescopic end of the electric push rod (46) is connected to a swing connecting rod (47) parallel to the central axis of the movable cylinder (42). A swing rack (48) is provided on the swing connecting rod (47). The swing rack (48) meshes with a swing toothed disc (49) fixed at the end of the movable block (45) through a speed-changing gear set.

5. The structural crack width detection assembly for concrete members of claim 1, wherein, The fixed base (5) is rotatably mounted with several rotatable support legs (51). The support legs (51) are arranged symmetrically with respect to the fixed base (5). The handle (2) has a receiving groove (52) for the support legs (51) to be inserted. A damping element (53) is installed between the support legs (51) and the fixed base (5).

6. The structural crack width detection component for concrete members according to claim 5, characterized in that, The support leg (51) and the handle (2) are provided with an anti-slip layer on the outside.

7. The structural crack width detection component for concrete members according to claim 5, characterized in that, The rotating assembly (6) includes a rotating motor (61) installed in a fixed base (5), the output end of the rotating motor (61) is connected to the handle (2), and the fixed base (5) is equipped with a conductive slip ring (62) connected to the rotating motor (61).

8. The structural crack width detection component for concrete members according to claim 1, characterized in that, The camera (3) is equipped with a fill light (31), which moves synchronously with the camera (3) along with the gimbal stabilization component (4).

9. The structural crack width detection component for concrete members according to claim 1, characterized in that, The detection probe (1) is covered with a waterproof layer on the outside.

10. A structural crack width detection component for concrete members according to claim 1, characterized in that, The detection probe (1) is equipped with a charging and communication port (7).

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