Bridge crack measuring device

Abstract

The bridge crack measuring device provided by the present application solves the problem that the existing measuring devices are unable to clean the cracks and the camera lens. The measuring device includes: an outer sleeve; an image acquisition mechanism is located inside the outer sleeve, and the image acquisition mechanism can be extended from the open end of the outer sleeve; the purge mechanism includes: an elastic airbag, a plurality of connecting components and a plurality of shielding frames, each shielding frame is penetrated by a plurality of exhaust holes, the elastic airbag is connected to the plurality of connecting components, and each connecting component is correspondingly connected to each shielding frame; in the first state of the plurality of shielding frames, the adjacent edges of two adjacent shielding frames are in contact to form a shield on one side of the image acquisition mechanism; in the second state, each shielding frame can be rotated in the axial direction of the outer sleeve, and the adjacent edges of the two adjacent shielding frames are separated from each other for the extension of the image acquisition mechanism; the measuring device of the present application can effectively clean impurities in the cracks and dust on the lens of the image acquisition mechanism, thereby improving the measurement accuracy and precision.

Description

Technical Field

[0001] The present invention generally relates to the technical field of bridge construction equipment, and in particular to a bridge crack measuring device. Background Art

[0002] As vital transportation infrastructure, bridge safety and stability are crucial. Bridge cracks are a significant factor affecting their structural safety. Traditional bridge crack measurement methods typically rely on manual visual inspection or simple measuring tools. These methods are not only inefficient but also difficult to ensure accurate measurement.

[0003] With the development of technology, crack measurement using video equipment has become a new trend. However, practical applications of related video measurement devices still face some problems, such as the inability to effectively clean impurities from cracks, leading to measurement errors, and dust clinging to the camera lens, affecting the accuracy of measurement results. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a bridge crack measuring device that can effectively clean impurities in the cracks and dust on the lens of the image acquisition mechanism, while also effectively protecting the image acquisition mechanism, improving measurement accuracy and precision, and extending the service life of the entire equipment.

[0005] In a first aspect, the present invention provides a bridge crack measurement device, comprising:

[0006] an outer sleeve having a closed end and an open end along an axial direction;

[0007] An image acquisition mechanism is located inside the outer sleeve and can extend out of the open end of the outer sleeve to acquire images of bridge cracks;

[0008] A purge mechanism is located inside the outer sleeve, and includes: an elastic airbag, multiple connecting components, and multiple shielding frames, each shielding frame having multiple exhaust holes. The elastic airbag is connected to the multiple connecting components, and each connecting component is connected to each shielding frame, so that gas flows to the shielding frame and is discharged from the exhaust holes.

[0009] A plurality of shielding frames are located on one side of the lens of the image acquisition mechanism and are arranged along the inner circumference of the outer sleeve. The plurality of shielding frames include a first state and a second state. In the first state, adjacent edges of two adjacent shielding frames contact to form a shielding area on the lens side of the image acquisition mechanism. In the second state, each shielding frame is rotatable in the axial direction of the outer sleeve, and adjacent edges of two adjacent shielding frames separate from each other to form an avoidance space for the image acquisition mechanism to extend.

[0010] The driving member is respectively connected to the image acquisition mechanism and the purge mechanism.

[0011] Optionally, each connected component includes:

[0012] A ring frame is disposed around the inner circumference of the outer sleeve, and includes a gas accommodating cavity, which is in communication with the elastic airbag;

[0013] The folded tube includes a first section and a second section that are connected to each other at a predetermined angle, the first section is connected to the gas receiving chamber, and the second section is located on a side of the ring frame close to the shielding frame;

[0014] a rotating sleeve, the rotating sleeve being rotatably connected to the outside of the second section and communicating with the inside of the second section;

[0015] A connecting pipe, one end of which is connected to the rotating sleeve and communicates with the interior of the rotating sleeve, and the other end of which is connected to each shielding frame and communicates with the exhaust hole;

[0016] As an optional solution, the connecting component further includes a reset member, which is used for the connecting tube to drive the shielding frame to rotate and reset to the first state after the rotation.

[0017] As an optional solution, one end of the ring frame is open, and the connecting components further include:

[0018] an air outlet pipe connected to the elastic airbag;

[0019] The ring frame includes a rotating ring plate, which is rotatably connected to the open end of the ring frame and defines a gas accommodating chamber with the inner wall of the ring frame. The gas accommodating chamber is connected to the gas outlet pipe. The first section of the folded tube passes through the rotating ring plate and is fixedly connected to the rotating ring plate.

[0020] As an optional solution, the measuring device further includes a rotating mechanism, which includes:

[0021] A rotating rod, one end of the rotating rod in the length direction is rotatably connected to the inner wall of the closed end of the outer sleeve, and the rotating rod is drivingly connected to the driving member and is used to rotate under the drive of the driving member;

[0022] Gear, the gear is mounted on the rotating rod;

[0023] A gear ring is rotatably connected to the outer sleeve and meshes with the gear;

[0024] A rotating ring is rotatably connected to the outer sleeve and is connected to the rotating ring plate to drive the rotating ring plate to rotate;

[0025] An extrusion rod, one end of which is mounted on the outer wall of the gear ring, and the other end of which is mounted on the outer wall of the rotating ring, is used for extruding the elastic airbag during the rotation process.

[0026] As an optional solution, the measuring device further includes a lifting mechanism, which includes:

[0027] A limiting rod is installed inside the outer sleeve and extends along the axial direction of the outer sleeve;

[0028] A mounting plate is slidably connected to the limit rod, and the image acquisition mechanism is mounted on the mounting plate;

[0029] The ejector assembly is located on one side of the mounting plate and is driven by the driving member to move the ejector assembly toward or away from the mounting plate under the drive of the driving member. When the ejector assembly moves to abut the mounting plate, the ejector assembly drives the mounting plate to move along the extension direction of the limit rod.

[0030] As an optional solution, the limiting rods include at least two, and the at least two limiting rods are evenly spaced along the circumference of the outer sleeve; the lifting mechanism also includes an elastic member, one end of the elastic member in the elastic deformation direction is connected to the mounting plate, and the other end is fixed to the inner wall of the outer sleeve.

[0031] As an optional solution, the ejection assembly includes:

[0032] A threaded rod, the threaded rod being drivingly connected to the driving member;

[0033] A threaded block, the threaded block is threadably engaged with the threaded rod and is movable along the axial direction of the threaded rod;

[0034] A push rod, one end of which is fixed to the threaded block, and the other end of which extends toward the mounting plate and has a predetermined distance from the mounting plate;

[0035] The guide piece is extended along the extension direction of the threaded rod, one end of the guide piece is fixed in the outer sleeve, and the other end of the guide piece is connected to the push rod.

[0036] As an optional solution, the guide member includes a telescopic rod, and the extending direction of the telescopic rod is parallel to the extending direction of the threaded rod.

[0037] As an optional solution, the measuring device further includes a detachable component, which includes:

[0038] A detachable connection structure, wherein the rotating rod and the gear are connected via the detachable connection structure;

[0039] A rotating cylinder, the rotating cylinder is rotatably connected to the gear;

[0040] A folding rod, one end of which is inserted into the rotating cylinder and can move along the length of the rotating cylinder, and the other end of which is connected to the ejection assembly;

[0041] A limit block is provided at the end of the folding rod located inside the rotating cylinder. When the folding rod moves to the end of the rotating cylinder, the limit block and the inner end surface of the rotating cylinder limit each other, and the ejection assembly abuts against the mounting plate.

[0042] The driving member drives the ejection assembly to move, and the ejection assembly drives the folding rod to move, so that the detachable connection structure is separated and the gear is separated from the rotating rod.

[0043] As an optional solution, the detachable structure includes a magnetic attraction component, the magnetic attraction component includes a first magnetic component and a second magnetic component, the first magnetic component is connected to the rotating rod, and the second magnetic component is connected to the gear.

[0044] The bridge crack measuring device provided by the present invention is provided with a purging mechanism, which includes an elastic airbag, a connecting component and a shielding frame, and an exhaust hole is opened on the shielding frame; the image acquisition mechanism can be extended from the open end of the outer sleeve to collect the bridge crack pattern; wherein, when the shielding frame is in the first state, the adjacent edges of two adjacent shielding frames are in contact, so that a shielding area can be reliably formed on the lens of the image acquisition mechanism to protect the image acquisition mechanism, and the gas of the elastic airbag can flow to the exhaust hole for discharge, so as to achieve purging of the lens of the image acquisition mechanism and the crack, thereby effectively purging the debris in the crack and the dust adhering to the lens of the image acquisition mechanism, ensuring that the image acquisition mechanism can clearly capture the internal situation of the crack and improve the measurement accuracy and precision; when the shielding frame is in the second state, the shielding frame rotates so that the adjacent edges of the two adjacent shielding frames are separated from each other to form an avoidance space, which is conducive to the image acquisition mechanism being able to extend from the open end of the outer sleeve and reliably capture the crack image. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0046] Figure 1 This is a schematic structural diagram of a bridge crack measurement device according to an embodiment of the present invention;

[0047] Figure 2 This is a cross-sectional view of a bridge crack measuring device according to an embodiment of the present invention;

[0048] Figure 3 This is a schematic structural diagram of an outer sleeve in a bridge crack measurement device according to an embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the structure inside the outer sleeve of a bridge crack measurement device according to an embodiment of the present invention;

[0050] Figure 5This is a schematic structural diagram of a purge mechanism in a bridge crack measurement device according to an embodiment of the present invention;

[0051] Figure 6 This is a schematic structural diagram of a lifting mechanism in a bridge crack measuring device according to an embodiment of the present invention;

[0052] Figure 7 This is a cross-sectional view of a lifting mechanism in a bridge crack measuring device according to an embodiment of the present invention;

[0053] Figure 8 for Figure 7 A schematic diagram of the structure at center A;

[0054] Figure 9 This is a schematic structural diagram of a purge mechanism in a bridge crack measurement device according to an embodiment of the present invention;

[0055] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B.

[0056] In the figure,

[0057] 1. Outer sleeve; 2. Boss; 3. Measuring camera; 4. Motor; 5. Lifting mechanism; 51. Limit rod; 52. Mounting plate; 53. Elastic member; 54. Ejector assembly; 541. Threaded rod; 542. Threaded block; 543. Ejector rod; 544. Telescopic rod; 6. Purge mechanism; 61. Elastic airbag; 62. Inlet pipe; 63. Outlet pipe; 64. Connecting assembly; 65. Shielding frame; 66. Rotating mechanism; 67. Extrusion rod; 641. Ring frame; 642. Rotating ring plate; 643. Folding tube; 644. Rotating sleeve; 645. Connecting tube; 646. Volute spring; 661. Transmission assembly; 662. Rotating rod; 663. Magnetic assembly; 664. Gear; 665. Gear ring; 666. Rotating ring; 667. Disengagement assembly; 6631. First magnet; 6632. Second magnet; 6671. Rotating cylinder; 6672. Folding rod; 6673. Protrusion. DETAILED DESCRIPTION

[0058] The present application will be further described in detail below with reference to the embodiments. It will be understood that the specific embodiments described herein are intended only to explain the relevant invention and are not intended to limit the invention. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present application will be described in detail below with reference to the embodiments.

[0059] Based on the above problems, the embodiment of the present application provides a bridge crack measurement device, such as Figure 1-10 As shown, including:

[0060] An outer sleeve 1 having a closed end and an open end along an axial direction;

[0061] An image acquisition mechanism is located inside the outer sleeve 1 and can extend from the open end of the outer sleeve 1 to acquire images of bridge cracks;

[0062] The purge mechanism 6 is located inside the outer sleeve 1 and includes: an elastic airbag 61, a plurality of connecting components 64, and a plurality of shielding frames 65. Each shielding frame 65 has a plurality of exhaust holes. The elastic airbag 61 is connected to the plurality of connecting components 64, and each connecting component 64 is correspondingly connected to each shielding frame 65, so that gas flows to the shielding frame 65 and is discharged from the exhaust holes.

[0063] A plurality of shielding frames 65 are located on one side of the lens of the image acquisition mechanism and are arranged along the inner circumference of the outer sleeve 1. The plurality of shielding frames 65 include a first state and a second state. In the first state, the adjacent edges of two adjacent shielding frames 65 touch to form a shielding area on the lens side of the image acquisition mechanism; in the second state, each shielding frame 65 is rotatable in the axial direction of the outer sleeve 1, and the adjacent edges of two adjacent shielding frames 65 are separated from each other to form an avoidance space for the extension of the image acquisition mechanism.

[0064] The driving member is respectively connected to the image acquisition mechanism and the purge mechanism 6 in a driving manner.

[0065] It should be noted that the outer sleeve 1 serves as the supporting body of the entire bridge crack measuring device and can be used to support and install the image acquisition mechanism, the purge mechanism 6 and the driving member, etc. The outer sleeve 1 can be, but is not limited to, cylindrical.

[0066] The image acquisition mechanism may be, but is not limited to, various types of camera instruments, as long as they can be used to capture images of cracks; the driving member may be, but is not limited to, various types of motors.

[0067] It is understood that the purge mechanism 6 is used to purge the image capture mechanism and the crack to remove dust from the image capture mechanism's lens and debris from the crack. The elastic airbag 61 is used to store gas, and the connecting component 64 is used to transport the gas inside the elastic airbag 61 to the shielding frame 65. The shielding frame 65 can be used to shield the image capture mechanism on the one hand, and on the other hand, it can be used to discharge gas to purge the image capture mechanism's lens and the crack.

[0068] Among them, there can be two or more shielding frames 65, and the number of connecting components 64 corresponds to the number of shielding frames 65, so that gas can flow to each shielding frame 65; when the shielding frame 65 is in the first state, each shielding frame 65 is spliced ​​along the circumference of the outer sleeve 1 to form a shielding area, which is conducive to the discharge of gas from the exhaust hole and the cleaning of the lens and cracks of the image acquisition mechanism; when the shielding frame 65 is in the second state, the shielding frame 65 rotates in the axial direction of the outer sleeve 1 (that is, the direction from the inside to the outside of the outer sleeve 1), so that the adjacent edges of each shielding frame 65 are separated from each other to form an avoidance space, so that the image acquisition mechanism can extend from the avoidance space to the open end of the outer sleeve 1 to shoot the cracks.

[0069] The bridge crack measuring device of the embodiment of the present application solves the problem that the existing measuring device cannot clean the cracks and the lens of the image acquisition mechanism. The bridge crack measuring device of the embodiment of the present application is provided with a purge mechanism 6, which includes an elastic airbag 61, a connecting component 64 and a shielding frame 65, and the shielding frame 65 is provided with an exhaust hole. The image acquisition mechanism can be extended from the open end of the outer sleeve 1 to collect the bridge crack pattern. When the shielding frame 65 is in a first state, the adjacent edges of two adjacent shielding frames 65 are in contact, thereby reliably forming a shielding area on the lens of the image acquisition mechanism to protect the image acquisition mechanism. The gas in the elastic airbag 61 can flow to the exhaust hole and be discharged, thereby purging the lens of the image acquisition mechanism and the crack, thereby effectively purging debris in the crack and dust adhering to the lens of the image acquisition mechanism, ensuring that the image acquisition mechanism can clearly capture the internal conditions of the crack and improving the measurement accuracy and precision. When the shielding frame 65 is in a second state, the shielding frame 65 rotates so that the adjacent edges of the two adjacent shielding frames 65 are separated from each other to form an avoidance space, which is conducive to the image acquisition mechanism extending from the open end of the outer sleeve 1 to reliably capture the crack image.

[0070] As an achievable method, Figure 5 、 9 As shown in Figure 10, each communication component 64 includes:

[0071] The ring frame 641 is disposed around the inner circumference of the outer sleeve 1 and includes a gas accommodating chamber that is in communication with the elastic airbag 61;

[0072] The folded tube 643 includes a first section and a second section that are connected to each other at a predetermined angle. The first section is connected to the gas receiving chamber, and the second section is located on a side of the ring frame 641 close to the shielding frame 65.

[0073] A rotating sleeve 644 is rotatably connected to the outside of the second section and communicates with the inside of the second section;

[0074] The connecting pipe 645 has one end connected to the rotating sleeve 644 and communicated with the interior of the rotating sleeve 644 , and the other end connected to each shielding frame 65 and communicated with the exhaust hole.

[0075] Among them, the ring frame 641 includes a gas accommodating chamber, which is used for the gas circulation in the elastic airbag 61; the folded tube 643 is used to connect the ring frame 641 and the shielding frame 65, and the folded tube 643, the rotating sleeve 644 and the connecting tube 645 are used to connect the ring frame 641 and the shielding frame 65, and the first section and the second section of the folded tube 643 can be perpendicular to each other, the rotating sleeve 644 rotates with the second section of the folded tube 643, and the connecting tube 645 connects the rotating sleeve 644 and the shielding frame 65, so that the shielding frame 65 can rotate along the second section of the folded tube 643 (the second section of the folded tube 643 can be perpendicular to the axial direction of the outer sleeve 1), thereby realizing the axial rotation of the shielding frame 65 in the outer sleeve 1, so as to realize the blowing of the lens and cracks of the image acquisition mechanism, and facilitate the image acquisition mechanism to extend out of the open end of the outer sleeve 1.

[0076] In a preferred embodiment, the connecting component 64 further includes a reset member, which is used for the connecting tube 645 to drive the shielding frame 65 to rotate, and reset to the first state after the rotation.

[0077] The reset member may be, but is not limited to, a torsion spring, a spiral spring 646 , etc. One end of the spiral spring 646 is connected to the second section of the folded tube 643 , and the other end is connected to the rotating sleeve 644 .

[0078] It can be understood that the gas enters the interior of the shielding frame 65 through the ring frame 641, the folded tube 643, the rotating sleeve 644 and the connecting tube 645. In the process of the image acquisition mechanism extending out of the open end of the outer sleeve 1, the shielding frame 65 is pushed, so that the shielding frame 65, the connecting tube 645 and the rotating sleeve 644 rotate around the second section of the folded tube 643. Under the action of the reset member, the shielding frame 65 can return to its original position in the process of the image acquisition mechanism returning to the interior of the outer sleeve 1.

[0079] In this embodiment, the reset member can ensure that the shielding frame 65 rotates reliably, and at the same time can enable the shielding frame 65 to reset to the first state after rotation, thereby shielding the image acquisition mechanism and purging the image acquisition mechanism and the cracks.

[0080] As an achievable method, one end of the ring frame 641 is open, and the connecting component 64 further includes:

[0081] An air outlet pipe 63 is connected to the elastic airbag 61;

[0082] The ring frame 641 includes a rotating ring plate 642, which is rotatably connected to the open end of the ring frame 641 and defines a gas accommodating chamber with the inner wall of the ring frame 641. The gas accommodating chamber is connected to the gas outlet pipe 63. The first section of the folded tube 643 passes through the rotating ring plate 642 and is fixedly connected to the rotating ring plate 642.

[0083] In this embodiment, the rotating ring plate 642 can drive the shielding frame 65 to rotate, which is conducive to achieving all-round cleaning of the image acquisition mechanism and the crack.

[0084] As an achievable method, Figure 5 、 Figure 7 、 Figure 8 and Figure 9 As shown, the measuring device further includes a rotating mechanism 66, which includes:

[0085] A rotating rod 662, one end of the rotating rod 662 in the longitudinal direction is rotatably connected to the inner wall of the closed end of the outer sleeve 1, and the rotating rod 662 is drivingly connected to the driving member for rotating under the drive of the driving member;

[0086] Gear 664, gear 664 is mounted on the rotating rod 662;

[0087] Gear ring 665, which is rotatably connected to the outer sleeve 1 and meshes with the gear 664;

[0088] Rotating ring 666, rotating ring 666 is rotatably connected to outer sleeve 1, and rotating ring 666 is connected to rotating ring plate 642, and is used to drive rotating ring plate 642 to rotate;

[0089] The extrusion rod 67 has one end mounted on the outer wall of the gear ring 665 and the other end mounted on the outer wall of the rotating ring 666 for squeezing the elastic airbag 61 during the rotation process.

[0090] The rotating rod 662 is connected to the driving member through the transmission assembly 661. The transmission assembly 661 can be, but is not limited to, a belt, a gear transmission mechanism, etc. The driving member drives the rotating rod 662 to rotate through the transmission assembly 661. The gear 664 and the rotating rod 662 are connected in any way, such as, but not limited to, a key connection. The rotating rod 662 rotates to drive the gear 664 to rotate. The gear 664 engages with the gear ring 665 to drive the gear ring 665 to rotate. The extrusion rod 67 is connected between the gear ring 665 and the rotating ring 666, thereby driving the extrusion rod 67 and the rotating ring 666 to rotate. During the rotation, the extrusion rod 67 squeezes the elastic airbag 61, and the gas flows to the ring frame 641 through the outlet pipe 63. At the same time, the rotating ring 666 rotates, driving the rotating ring plate 642 to rotate. The rotation of the rotating ring plate 642 drives the shielding frame 65 to rotate under the connection of the folded tube 643, and the gas enters the shielding frame 65 through the folded tube 643 and is discharged from the exhaust hole to achieve purging of the crack and the lens of the image acquisition mechanism.

[0091] As an achievable method, Figure 2 、 Figure 4 、 Figure 6 and Figure 7 As shown, the measuring device further includes a lifting mechanism 5, which includes:

[0092] The limiting rod 51 is installed inside the outer sleeve 1 and extends along the axial direction of the outer sleeve 1;

[0093] A mounting plate 52 is slidably connected to the limiting rod 51, and the image acquisition mechanism is mounted on the mounting plate 52;

[0094] The ejector assembly 54 is located on one side of the mounting plate 52 and is connected to the driving member for moving the ejector assembly 54 toward or away from the mounting plate 52 under the drive of the driving member. When the ejector assembly 54 moves to abut against the mounting plate 52, the ejector assembly 54 drives the mounting plate 52 to move along the extension direction of the limit rod 51.

[0095] It can be understood that the lifting mechanism 5 is mainly used to drive the image acquisition mechanism to move, so that the image acquisition mechanism can move between the inside and the outside of the outer sleeve 1, thereby acquiring images of the crack.

[0096] Among them, the limiting rod 51 has a good guiding effect, the mounting plate 52 is used to carry and install the image acquisition mechanism, and the mounting plate 52 and the limiting rod 51 are slidably connected, which is conducive to the mounting plate 52 driving the image acquisition mechanism to move along the extension direction of the limiting rod 51; the ejection assembly 54 is mainly used to transmit power. Under the drive of the driving member, the ejection assembly 54 first moves toward the mounting plate 52 until the ejection assembly 54 moves to abut against the mounting plate 52. The driving member drives the ejection assembly 54 to continue to move, and the ejection assembly 54 drives the mounting plate 52 to move along the extension direction of the limiting rod 51, so that the image acquisition mechanism can extend out of the open end of the outer sleeve 1.

[0097] In a preferred embodiment, the limiting rods 51 include at least two, and the at least two limiting rods 51 are evenly spaced along the circumference of the outer sleeve 1; the lifting mechanism 5 also includes an elastic member 53, one end of the elastic member 53 in the elastic deformation direction is connected to the mounting plate 52, and the other end is fixed to the inner wall of the outer sleeve 1.

[0098] There may be two, three or more limit rods 51, and at least two limit rods 51 are evenly spaced along the circumference of the outer sleeve 1, which is conducive to stable guidance and ensures stable movement of the image acquisition mechanism;

[0099] It can be understood that the elastic member 53 can be but is not limited to a spring or rubber, and the elastic member 53 is mainly used to provide elastic buffering to ensure that the mounting plate 52 drives the image acquisition mechanism to remain stable and not shake during the lifting process, thereby improving the measurement accuracy; specifically, the elastic member 53 is a spring, and the spring is sleeved on the limit rod 51, with one end of the spring in the deformation direction connected to the outer sleeve 1, and the other end of the spring in the deformation direction connected to the mounting plate 52.

[0100] As an achievable method, Figure 7 As shown, the ejection assembly 54 includes:

[0101] A threaded rod 541 is drivingly connected to the driving member;

[0102] The threaded block 542 is threadedly engaged with the threaded rod 541 and can move along the axial direction of the threaded rod 541;

[0103] A push rod 543, one end of which is fixed to the threaded block 542, and the other end of which extends toward the mounting plate 52 and has a predetermined distance from the mounting plate 52;

[0104] The guide member is extended along the extension direction of the threaded rod 541 , and one end of the guide member is fixed in the outer sleeve 1 , and the other end of the guide member is connected to the push rod 543 .

[0105] The guide member may be, but is not limited to, a slide rail or a telescopic rod 544 .

[0106] In this embodiment, the driving member drives the threaded rod 541 to rotate. Under the action of the guide member, the top rod 543 can move along the extension direction of the threaded rod 541 under the drive of the threaded block 542. The top rod 543 moves until it abuts against the mounting plate 52, driving the image acquisition mechanism to move.

[0107] In a preferred embodiment, the guide member includes a telescopic rod 544 , and the extending direction of the telescopic rod 544 is parallel to the extending direction of the threaded rod 541 .

[0108] In this embodiment, the guide member is a telescopic rod 544 , which has a simple structure and can reliably limit the freedom of the threaded block 542 , so that the threaded block 542 drives the push rod 543 to move along the extension direction of the threaded rod 541 .

[0109] As an achievable method, Figure 7 As shown, the measuring device further includes a detachment assembly 667, which includes:

[0110] A detachable connection structure, wherein the rotating rod 662 and the gear 664 are connected via the detachable connection structure;

[0111] Rotating cylinder 6671, rotating cylinder 6671 is rotatably connected to gear 664;

[0112] A folding rod 6672, one end of which is inserted into the rotating cylinder 6671 and can move along the length of the rotating cylinder 6671, and the other end of the folding rod 6672 is connected to the ejection assembly 54;

[0113] The limit block 6673 is provided at the end of the folding rod 6672 located inside the rotating cylinder 6671. When the folding rod 6672 moves to the end of the rotating cylinder 6671, the limit block 6673 and the inner end surface of the rotating cylinder 6671 are mutually limited, and the ejection assembly 54 abuts against the mounting plate 52.

[0114] The driving member drives the ejection assembly 54 to move, and the ejection assembly 54 drives the folding rod 6672 to move, so that the detachable connection structure is separated, and the gear 664 is separated from the rotating rod 662.

[0115] It can be understood that the ejection assembly 54 and the rotating mechanism 66 are driven by the same driving member. Therefore, the detachable connection structure is set. In the initial state, the detachable connection structure is connected together, so that the rotating rod 662 and the gear 664 are connected. The driving member drives the transmission assembly 661 to drive the rotating rod 662 to rotate. The gear 664 rotates so that the gear ring 665 drives the extrusion rod 67 and the rotating ring 666 to rotate. The rotating ring 666 drives the rotating ring plate 642 to rotate, and the rotating ring plate 642 drives the shielding frame 65 to rotate. , the area around the crack and the image acquisition mechanism are purged in all directions; in this process, the threaded rod 541 rotates, and the threaded block 542 drives the push rod 543 to move along the extension direction of the threaded rod 541 under the action of the guide member. At the same time, the push rod 543 drives the folding rod 6672 and the limit block 6673 to move. When the push rod 543 moves to abut against the mounting plate 52, the limit block 6673 moves to abut against the end face of the rotating cylinder 6671. At this time, the push rod 543 continues to move, and the detachable connection structure is separated, so that the rotating rod 662 and gear 664 are separated from each other. Driven by the folding rod 6672, the gear 664 moves and disengages from the gear ring 665. The gear ring 665, the extruding rod 67 and the shielding frame 65 stop rotating and enter the measurement state. The push rod 543 drives the image acquisition mechanism to move along the limit rod 51. The elastic member 53 can provide a certain elastic buffer to ensure that the image acquisition mechanism remains stable during the lifting process to avoid vibration affecting the measurement accuracy. The measurement image acquisition mechanism moves and pushes the shielding frame 65 open. A flexible sealing pad is provided on the edge of the shielding frame 65 to protect the crack surface from damage. The flexible sealing pad has a certain flexibility and will deform during the rotation of the shielding frame 65 to avoid collision and interference between the two adjacent sets of shielding frames 65 when rotating. The measurement image acquisition mechanism extends and shoots the crack through its lens to obtain image information of the crack. The image information shot by the image acquisition mechanism is transmitted to the measuring equipment host through an electrical connection. The host analyzes and processes the image to calculate parameters such as the width of the crack to achieve accurate measurement of the bridge crack.

[0116] In a preferred embodiment, the detachable connection structure includes a magnetic assembly 663 , which includes a first magnetic member and a second magnetic member. The first magnetic member is connected to the rotating rod 662 , and the second magnetic member is connected to the gear 664 .

[0117] In this embodiment, one of the first magnetic part and the second magnetic part can be but is not limited to a magnet or a ferromagnetic part. As long as the first magnetic part and the second magnetic part can generate magnetic attraction, the structure is simple and can reliably achieve the separable matching of the gear 664 and the rotating rod 662.

[0118] The bridge crack measuring device of the present invention is described below through a specific embodiment.

[0119] Bridge crack measurement device, such as Figures 1-10 As shown, it includes an outer sleeve 1 and a measuring camera 3 (image acquisition mechanism). One end of the outer sleeve 1 is a closed end and the other end is an open end. The measuring camera 3 is located inside the outer sleeve 1 and is electrically connected to the measuring device host.

[0120] The end surface of the open end of the outer sleeve 1 is provided with a boss 2. The bosses 2 are provided in several groups and arranged in a circumferential manner to increase the contact stability between the device and the bridge surface and prevent the device from sliding during the measurement process. The outer sleeve 1 is provided with a motor inside and fixed to the closed end of the outer sleeve 1.

[0121] The outer sleeve 1 is further provided with a lifting mechanism 5 and a purge mechanism 6. The purge mechanism 6 includes: an elastic airbag 61 connected to the outer wall of the outer sleeve 1, and the elastic airbag 61 is provided in a plurality of groups and arranged in a circumferential manner; an air inlet pipe 62 connected to the interior of the elastic airbag 61, and a one-way valve 1 is provided in the air inlet pipe 62; an air outlet pipe 63, one end of which is connected to the interior of the elastic airbag 61, and a one-way valve 2 is provided in the air outlet pipe 63;

[0122] The connecting component 64 includes: a ring frame 641, which is connected to the inner wall of the outer sleeve 1 and is connected to the interior of the air outlet pipe 63; a rotating ring plate 642, which is rotatably connected to the ring frame 641; a folded tube 643, which passes through the rotating ring plate 642 and is connected thereto, and the folded tube 643 is connected to the interior of the ring frame 641; a rotating sleeve 644, which is connected to the interior of the folded tube 643 and is rotatably connected thereto; a connecting tube 645, which is connected to the rotating sleeve 644 and is connected to the interior thereof, and the connecting tube 645 passes through one side of the shielding frame 65 and is connected to the interior thereof; a volute spring 646, one end of which is connected to the folded tube 643 and the other end is connected to the rotating sleeve 644. In the connecting assembly 64, the gas passes through the ring frame 641, the folded tube 643, the rotating sleeve 644, and the connecting tube 645 in sequence to enter the interior of the shielding frame 65. When the measuring camera 3 is extended, the shielding frame 65 is pushed up, causing the shielding frame 65, the connecting tube 645, and the rotating sleeve 644 to rotate around the folded tube 643. The spiral spring 646 ensures that the shielding frame 65 can return to its original position when the measuring camera 3 returns to the interior of the outer sleeve 1.

[0123] The rotating mechanism 66 includes: a transmission assembly 661, one end of which is connected to the output end of the motor 4; a rotating rod 662, connected to the other end of the transmission assembly 661, and one end of which is rotatably connected to the closed end of the outer sleeve 1; a magnetic assembly 663, one end of which is connected to the other end of the rotating rod 662; a gear 664, connected to the other end of the magnetic assembly 663; a gear ring 665, which is rotatably connected to the outer sleeve 1 and meshes with the gear 664, and the outer wall of the gear ring 665 is connected to one end of the extrusion rod 67; a rotating ring 666, which is rotatably connected to the outer sleeve 1 and connected to the other end of the extrusion rod 67, and the rotating ring 666 is connected to the rotating ring plate 642;

[0124] The lifting mechanism 5 includes: a limit rod 51, which is connected to the closed end of the outer sleeve 1; a mounting plate 52, which is slidably connected to the limit rod 51 and connected to the measuring camera 3; an elastic member 53, one end of which is connected to the closed end of the outer sleeve 1 and the other end is connected to the mounting plate 52; an ejection assembly 54, one end of which is connected to the output end of the motor 4 and the other end is connected to the closed end of the outer sleeve 1.

[0125] The motor 4 drives the ejector assembly 54 until it contacts the mounting plate 52, which in turn drives the mounting plate 52, thereby moving the measuring camera 3 along the limiting rod 51. The elastic member 53 provides a certain elastic buffer to ensure that the measuring camera 3 remains stable during the lifting process, preventing vibration from affecting measurement accuracy. The elastic member 53 can be a spring, a spring, or the like.

[0126] The ejector assembly 54 comprises a threaded rod 541 connected to the output end of the motor 4; a threaded block 542 threadedly connected to the threaded rod 541; a push rod 543 connected to the threaded block 542; and a telescopic rod 544, one end of which is connected to the push rod 543 and the other end is connected to the closed end of the outer sleeve 1. The motor 4 drives the threaded rod 541 to rotate. Under the limit of the telescopic rod 544, the threaded rod 541 drives the threaded block 542 to move longitudinally, and the threaded block 542 drives the push rod 543 to move longitudinally, so that the push rod 543 moves to abut against the mounting plate 52, driving the measurement camera 3 to move.

[0127] The bridge crack measuring device further includes: a disengagement assembly 667, which includes: a rotating cylinder 6671, rotatably connected to the gear 664; a folding rod 6672, slidably connected to the rotating cylinder 6671, and one end of which is connected to the top rod 543; a limit block 6673, located inside the rotating cylinder 6671 and connected to the other end of the folding rod 6672; a magnetic attraction assembly 663, which includes: a first magnet 6631, connected to the rotating rod 662; a second magnet 6632, connected to the gear 664, and having opposite magnetic properties to the first magnet 6631;

[0128] In the initial state, the measuring camera 3 is located between the shielding frame 65 and the closed end of the outer sleeve 1, the second magnet 6632 is magnetically attracted to the first magnet 6631, the gear 664 is stably connected to the rotating rod 662, the gear 664 and the gear ring 665 are in a stable meshing state, and the limit block 6673 is close to the gear 664;

[0129] The device is placed near a crack in a bridge so that the open end of the outer sleeve 1 is close to the crack. The design of the boss 2 can increase the contact stability between the device and the bridge surface and prevent the device from sliding during the measurement process. When measuring, the motor 4 drives the threaded rod 541 to rotate. Under the limit of the telescopic rod 544, the threaded rod 541 drives the threaded block 542 to move longitudinally, and the threaded block 542 drives the top rod 543 to move longitudinally. During an initial period of time, the top rod 543 does not abut against the mounting plate 52. During this process, the motor 4 drives the transmission assembly 661 to rotate, the transmission assembly 661 drives the rotating rod 662 to rotate, the rotating rod 662 drives the gear 664 to rotate, the gear 664 drives the gear ring 665 to rotate, and the gear ring 666 rotates. 65 drives the extrusion rod 67 to rotate, and the outside air enters the elastic airbag 61 through the air inlet pipe 62. The extrusion rod 67 rotates and squeezes the elastic airbag 61, so that the gas inside the elastic airbag 61 enters the interior of the shielding frame 65 through the air outlet pipe 63, the ring frame 641, the folded tube 643, the rotating sleeve 644 and the connecting tube 645, and the gas is discharged through the exhaust holes at the top and bottom of the shielding frame 65 to form an airflow, which blows away the debris in the crack and a small amount of dust on the measuring camera 3. The extrusion rod 67 drives the rotating ring 666 to rotate, and the rotating ring 666 drives the rotating ring plate 642 to rotate. The rotating ring plate 642 drives the shielding frame 65 to rotate, and the area around the crack and the measuring camera 3 are blown in all directions;

[0130] As the push rod 543 moves, the push rod 543 drives the folding rod 6672 and the limit block 6673 to move synchronously. When the push rod 543 moves to abut against the mounting plate 52, the limit block 6673 moves to abut against the end of the rotating cylinder 6671 away from the gear 664, and the push rod 543 continues to move, overcoming the magnetic attraction between the second magnet 6632 and the first magnet 6631, so that the gear 664 moves longitudinally until it is disengaged from the gear ring 665, the gear ring 665, the extrusion rod 67 and the shielding frame 65 stop rotating and enter the measuring state. The push rod 543 drives the measuring camera 3 to move along the limit rod 51, and the elastic member 53 can provide a certain elastic buffer to ensure that the measuring The measuring camera 3 remains stable during the lifting process to avoid vibration affecting the measurement accuracy. The measuring camera 3 moves and pushes open the shielding frame 65. The flexible sealing pad can protect the crack surface from damage. The flexible sealing pad has a certain flexibility and will deform during the rotation of the shielding frame 65 to avoid collision and interference between the two adjacent groups of shielding frames 65 when they rotate. The measuring camera 3 extends and shoots the crack through its lens to obtain image information of the crack. The image information captured by the measuring camera 3 is transmitted to the measuring equipment host through an electrical connection. The host analyzes and processes the image and calculates parameters such as the width of the crack to achieve accurate measurement of the bridge crack.

[0131] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features having similar functions disclosed in this application.

Claims

1. Bridge crack measuring device, characterized in that: include: an outer sleeve having a closed end and an open end along an axial direction; An image acquisition mechanism is located inside the outer sleeve and can extend from the open end of the outer sleeve to acquire images of bridge cracks; a purge mechanism located inside the outer sleeve, the purge mechanism comprising: an elastic airbag, a plurality of connecting components, and a plurality of shielding frames, each of the shielding frames having a plurality of exhaust holes formed therethrough, the elastic airbag being in communication with the plurality of connecting components, each of the connecting components being in communication with each of the shielding frames, for allowing gas to flow to the shielding frames and be discharged from the exhaust holes; The plurality of shielding frames are located on one side of the lens of the image acquisition mechanism and are arranged along the inner circumference of the outer sleeve. The plurality of shielding frames include a first state and a second state. In the first state, adjacent edges of two adjacent shielding frames contact to form a shielding area on the lens side of the image acquisition mechanism; in the second state, each of the shielding frames is rotatable in the axial direction of the outer sleeve, and adjacent edges of two adjacent shielding frames are separated from each other to form an avoidance space for the image acquisition mechanism to extend. A driving member, the driving member being respectively connected to the image acquisition mechanism and the purge mechanism; Each of the connectivity components comprises: a ring frame, the ring frame being disposed around the inner circumference of the outer sleeve, the ring frame including a gas accommodating cavity, the gas accommodating cavity being in communication with the elastic airbag; a folded tube, the folded tube comprising a first section and a second section that are connected to each other at a predetermined angle, the first section being connected to the gas containing chamber, and the second section being located on a side of the ring frame close to the shielding frame; a rotating sleeve, the rotating sleeve being rotatably connected to the outside of the second section and communicating with the inside of the second section; A connecting pipe, one end of which is connected to the rotating sleeve and communicated with the interior of the rotating sleeve, and the other end of which is connected to each of the shielding frames and communicated with the exhaust hole.

2. The bridge crack measuring device according to claim 1, characterized in that: The connecting assembly further includes a reset member, which is used for the connecting pipe to drive the shielding frame to rotate and reset to the first state after the rotation.

3. The bridge crack measuring device according to claim 1, characterized in that: One end of the ring frame is open, and the connecting component further comprises: an air outlet pipe, connected to the elastic airbag; The ring frame includes a rotating ring plate, which is rotatably connected to the open end of the ring frame and defines a gas accommodating chamber with the inner wall of the ring frame. The gas accommodating chamber is connected to the gas outlet pipe, and the first section of the folded tube passes through the rotating ring plate and is fixedly connected to the rotating ring plate.

4. The bridge crack measuring device according to claim 3, characterized in that: The measuring device further comprises a rotating mechanism, wherein the rotating mechanism comprises: a rotating rod, one end of the rotating rod in the length direction being rotatably connected to the inner wall of the closed end of the outer sleeve, and the rotating rod being drivingly connected to the driving member for rotating under the drive of the driving member; a gear mounted on the rotating rod; a gear ring rotatably connected to the outer sleeve and meshing with the gear; A rotating ring, the rotating ring being rotatably connected to the outer sleeve and connected to the rotating ring plate, and being used to drive the rotating ring plate to rotate; An extrusion rod, one end of which is mounted on the outer wall of the gear ring, and the other end of which is mounted on the outer wall of the rotating ring, is used to squeeze the elastic airbag during the rotation process.

5. The bridge crack measuring device according to claim 4, characterized in that: The measuring device further includes a lifting mechanism, which includes: A limiting rod is installed inside the outer sleeve and extends along the axial direction of the outer sleeve; a mounting plate, slidably connected to the limiting rod, and the image acquisition mechanism is mounted on the mounting plate; An ejection assembly is located on one side of the mounting plate and is drivingly connected to the driving member, and is used to move the ejection assembly toward or away from the mounting plate under the drive of the driving member. When the ejection assembly moves to abut against the mounting plate, the ejection assembly drives the mounting plate to move along the extension direction of the limiting rod.

6. The bridge crack measuring device according to claim 5, characterized in that: The limiting rods include at least two, and the at least two limiting rods are evenly spaced along the circumference of the outer sleeve; the lifting mechanism also includes an elastic member, one end of the elastic member in the elastic deformation direction is connected to the mounting plate, and the other end is fixed to the inner wall of the outer sleeve.

7. The bridge crack measuring device according to claim 5, characterized in that: The ejection assembly comprises: a threaded rod, the threaded rod being drivingly connected to the driving member; a threaded block, the threaded block being threadably engaged with the threaded rod and being movable along the axial direction of the threaded rod; a push rod, one end of which is fixed to the threaded block, and the other end of which extends toward the mounting plate and has a predetermined distance from the mounting plate; A guide member is extended along the extension direction of the threaded rod, with one end of the guide member fixed in the outer sleeve and the other end of the guide member connected to the push rod; Preferably, the guide member comprises a telescopic rod, and an extending direction of the telescopic rod is parallel to an extending direction of the threaded rod.

8. The bridge crack measuring device according to claim 5, characterized in that: The measuring device further comprises a breakaway assembly, the breakaway assembly comprising: a detachable connection structure, wherein the rotating rod and the gear are connected via the detachable connection structure; a rotating cylinder, the rotating cylinder being rotatably connected to the gear; a folding rod, one end of which is inserted into the interior of the rotating cylinder and is movable along the length of the rotating cylinder, and the other end of which is connected to the ejection assembly; a limit block, the limit block being arranged at the end of the folding rod located in the rotating cylinder, and when the folding rod moves to the end of the rotating cylinder, the limit block and the inner end surface of the rotating cylinder are mutually limited, and the ejection assembly abuts against the mounting plate; The driving member drives the ejection assembly to move, and the ejection assembly drives the folding rod to move, so that the detachable connection structure is separated and the gear is separated from the rotating rod.

9. The bridge crack measuring device according to claim 8, characterized in that: The detachable connection structure includes a magnetic attraction component, and the magnetic attraction component includes a first magnetic component and a second magnetic component. The first magnetic component is connected to the rotating rod, and the second magnetic component is connected to the gear.

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