Bridge crack measuring device

Abstract

The invention provides a bridge crack measuring device, which solves the problem that an existing measuring device cannot clean cracks and a lens of a camera, and comprises an outer sleeve; the image acquisition mechanism is located in the outer sleeve, and the image acquisition mechanism can extend out of the open end of the outer sleeve; the blowing mechanism comprises an elastic air bag, a plurality of communicating assemblies and a plurality of shielding frames, a plurality of exhaust holes are formed in each shielding frame in a penetrating mode, the elastic air bag communicates with the communicating assemblies, and each communicating assembly correspondingly communicates with the corresponding shielding frame; when the plurality of shielding frames are in the first state, adjacent edges of two adjacent shielding frames are in contact so as to form shielding on one side of the image acquisition mechanism; in the second state, each shielding frame can rotate in the axis direction of the outer sleeve, and the adjacent edges of every two adjacent shielding frames are separated from each other and used for the image acquisition mechanism to stretch out; the measuring device can effectively clean impurities in the crack and dust on the lens of the image acquisition mechanism, and the measuring accuracy and the measuring precision are improved.

Description

Technical Field

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

[0002] As an important transportation infrastructure, the safety and stability of bridges are crucial. Bridge cracks are one of the important factors affecting their structural safety. Traditional bridge crack measurement methods usually rely on manual visual inspection or simple measuring tools, which are not only inefficient but also difficult to guarantee measurement accuracy.

[0003] With the development of technology, using camera equipment for crack measurement has become a new trend. However, there are still some problems in the actual application of camera measurement devices in related technologies. For example, impurities in the cracks cannot be effectively cleaned, resulting in measurement errors; dust adheres to the lens of the camera equipment, affecting the accuracy of measurement results, etc. Summary of the Invention

[0004] In view of the above defects or deficiencies in the prior art, it is desirable 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, and at the same time can effectively protect the image acquisition mechanism, improve measurement accuracy and precision, and extend the service life of the entire device.

[0005] In a first aspect, the present invention provides a bridge crack measuring device, including: An outer sleeve, the outer sleeve has a closed end and an open end along the axial direction; An image acquisition mechanism, located inside the outer sleeve, and the image acquisition mechanism can extend out of the open end of the outer sleeve for acquiring bridge crack images; A purging mechanism, located inside the outer sleeve, the purging mechanism includes: an elastic airbag, a plurality of communication components and a plurality of shielding frames. Each shielding frame is provided with a plurality of exhaust holes penetrating therethrough. The elastic airbag is communicated with the plurality of communication components, and each communication component is correspondingly communicated with each shielding frame for gas to flow to the shielding frame and discharge from the exhaust holes; The plurality of shielding frames are located on the lens side 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, the adjacent edges of adjacent two shielding frames are in contact to form a shielding area on the lens side of the image acquisition mechanism; in the second state, each shielding frame can rotate in the axial direction of the outer sleeve, and the adjacent edges of adjacent two shielding frames are separated from each other to form an avoidance space for the image acquisition mechanism to extend out; A driving member, the driving member is respectively drivingly connected with the image acquisition mechanism and the purging mechanism.

[0006] As an optional solution, each communication component includes: A ring frame is arranged along the inner circumference of the outer sleeve. The ring frame includes a gas accommodation chamber, and the gas accommodation chamber is communicated with the elastic airbag; A folding tube, the folding tube includes a first section and a second section that form a predetermined angle and are communicated with each other. The first section is communicated with the gas accommodation chamber, and the second section is located on the side of the ring frame close to the shielding frame; A rotating sleeve is rotatably connected to the outside of the second section and is communicated with the inside of the second section; A connecting pipe, one end of the connecting pipe is connected to the rotating sleeve and is communicated with the inside of the rotating sleeve, and the other end of the connecting pipe is connected to each shielding frame and is communicated with the exhaust hole; As an optional solution, the communication component further includes a reset member, and the reset member is used to drive the shielding frame to rotate by the connecting pipe and reset to the first state after rotation.

[0007] As an optional solution, one end of the ring frame is open, and the communication component further includes: An air outlet pipe, which is communicated with the elastic airbag; The ring frame includes a rotating ring plate, the rotating ring plate is rotatably connected to the open end of the ring frame, and defines a gas accommodation chamber with the inner wall of the ring frame. The gas accommodation chamber is communicated with the air outlet pipe, and the first section of the folding tube penetrates through the rotating ring plate and is fixedly connected to the rotating ring plate.

[0008] As an optional solution, the measuring device further includes a rotating mechanism, and the rotating mechanism includes: 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; A gear is installed on the rotating rod; A toothed ring is rotatably connected to the outer sleeve and meshes with the gear; A rotating ring is rotatably connected to the outer sleeve, and the rotating ring is connected to the rotating ring plate and is used to drive the rotating ring plate to rotate; An extrusion rod, one end of the extrusion rod is installed on the outer wall of the toothed ring, and the other end of the extrusion rod is installed on the outer wall of the rotating ring and is used to extrude the elastic airbag during rotation.

[0009] As an optional solution, the measuring device further includes a lifting mechanism, and the lifting mechanism includes: A limiting rod is installed inside the outer sleeve and extends along the axial direction of the outer sleeve; A mounting plate is slidably connected to the limiting rod, and the image acquisition mechanism is installed on the mounting plate; A jacking component is located on one side of the mounting plate, and the jacking component is drivingly connected to the driving member and is used to move the jacking component towards or away from the mounting plate under the drive of the driving member. When the jacking component moves to a state of abutting against the mounting plate, the jacking component drives the mounting plate to move along the extension direction of the limiting rod.

[0010] As an alternative solution, there are at least two limiting rods, and the at least two limiting rods are evenly spaced along the circumferential direction of the outer sleeve; the lifting mechanism further includes an elastic member, one end of the elastic member in the direction of elastic deformation is connected to the mounting plate, and the other end is fixed to the inner wall of the outer sleeve.

[0011] As an alternative solution, the ejection assembly includes: A threaded rod, which is drivingly connected to the driving member; A threaded block, which is in threaded engagement with the threaded rod and can move along the axial direction of the threaded rod; A ejector rod, one end of the ejector rod is fixed to the threaded block, the other end extends towards the mounting plate and has a predetermined distance from the mounting plate; A guiding member, which extends along the extending direction of the threaded rod, and one end of the guiding member is fixed inside the outer sleeve, and the other end of the guiding member is connected to the ejector rod.

[0012] As an alternative solution, the guiding member includes a telescopic rod, and the extending direction of the telescopic rod is parallel to the extending direction of the threaded rod.

[0013] As an alternative solution, the measuring device further includes a disengaging assembly, and the disengaging assembly includes: A separable connection structure, the rotating rod and the gear are connected through the separable connection structure; A rotating cylinder, the rotating cylinder is rotatably connected to the gear; A folding rod, one end of the folding rod is inserted into the rotating cylinder and can move along the length direction of the rotating cylinder, and the other end of the folding rod is connected to the ejection assembly; A limiting block, the limiting block is arranged 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 limiting block and the inner end face 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 separable connection structure is separated, and the gear is separated from the rotating rod.

[0014] As an alternative solution, the separable structure includes a magnetic attraction assembly, and the magnetic attraction assembly includes a first magnetic member and a second magnetic member. The first magnetic member is connected to the rotating rod, and the second magnetic member is connected to the gear.

[0015] The bridge crack measurement device provided by the present invention is provided with a purging mechanism. The purging mechanism includes an elastic airbag, a connecting component and a shielding frame. Exhaust holes are formed in the shielding frame; the image acquisition mechanism can extend out of the open end of the outer sleeve and is used for acquiring bridge crack patterns; 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. The gas in the elastic airbag can flow to the exhaust holes and be discharged, realizing purging of the lens of the image acquisition mechanism and the crack, thereby effectively purging the debris in the crack and purging 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 improving the measurement accuracy and precision; when the shielding frame is in the second state, the shielding frame rotates so that the adjacent edges of two adjacent shielding frames are separated from each other to form an avoidance space, which is beneficial for the image acquisition mechanism to extend out of the open end of the outer sleeve and reliably capture the crack image. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 Schematic structural diagram of a bridge crack measurement device in an embodiment of the present invention; Figure 2 Cross-sectional view of a bridge crack measurement device in an embodiment of the present invention; Figure 3 Schematic structural diagram of the outer sleeve of a bridge crack measurement device in an embodiment of the present invention; Figure 4 Schematic structural diagram of the interior of the outer sleeve of a bridge crack measurement device in an embodiment of the present invention; Figure 5 Schematic structural diagram of the purging mechanism of a bridge crack measurement device in an embodiment of the present invention; Figure 6 Schematic structural diagram of the lifting mechanism of a bridge crack measurement device in an embodiment of the present invention; Figure 7 Cross-sectional view of the lifting mechanism of a bridge crack measurement device in an embodiment of the present invention; Figure 8 For Figure 7 Schematic enlarged view of the structure at A in Figure 9 Schematic structural diagram of the purging mechanism of a bridge crack measurement device in an embodiment of the present invention; Figure 10 For Figure 9 Schematic enlarged view of the structure at B in

[0017] In the figure, 1. Outer sleeve; 2. Boss; 3. Measuring camera; 4. Motor; 5. Lifting mechanism; 51. Limit rod; 52. Mounting plate; 53. Elastic member; 54. Ejecting assembly; 541. Threaded rod; 542. Threaded block; 543. Ejecting rod; 544. Telescopic rod; 6. Purging mechanism; 61. Elastic airbag; 62. Intake 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 pipe; 644. Rotating sleeve; 645. Connecting pipe; 646. Volute spring; 661. Transmission assembly; 662. Rotating rod; 663. Magnetic attraction assembly; 664. Gear; 665. Tooth ring; 666. Rotating ring; 667. Detaching assembly; 6631. First magnet; 6632. Second magnet; 6671. Rotating cylinder; 6672. Folding rod; 6673. Protrusion. Detailed implementation manners

[0018] The present application will be further described in detail below in conjunction with embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the embodiments.

[0019] Based on the above problems, an embodiment of the present application provides a bridge crack measurement device, as Figure 1-10 shown, including: An outer sleeve 1, the outer sleeve 1 has a closed end and an open end along the axial direction; An image acquisition mechanism, located inside the outer sleeve 1, and the image acquisition mechanism can extend out of the open end of the outer sleeve 1 for acquiring bridge crack images; A purging mechanism 6, located inside the outer sleeve 1, the purging mechanism 6 includes: an elastic airbag 61, a plurality of connecting assemblies 64 and a plurality of shielding frames 65. Each shielding frame 65 is provided with a plurality of exhaust holes penetrating therethrough. The elastic airbag 61 is communicated with the plurality of connecting assemblies 64, and each connecting assembly 64 is correspondingly communicated with each shielding frame 65 for gas to flow to the shielding frame 65 and discharge from the exhaust holes; The plurality of shielding frames 65 are located on the lens side 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 are in contact to form a shielding area on the lens side of the image acquisition mechanism; in the second state, each shielding frame 65 can rotate 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 image acquisition mechanism to extend out; A driving member, the driving member is respectively drivingly connected to the image acquisition mechanism and the purging mechanism 6.

[0020] It should be noted that the outer sleeve 1 serves as the support body of the entire bridge crack measurement device and can be used to support and install the image acquisition mechanism, the purging mechanism 6, the driving member, etc. Among them, the outer sleeve 1 can be, but is not limited to, cylindrical in shape.

[0021] Among them, the image acquisition mechanism can 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 can be, but is not limited to, various types of motors.

[0022] It can be understood that the purging mechanism 6 is used to purge the image acquisition mechanism and the crack to remove dust on the lens of the image acquisition mechanism and debris in the crack. Among them, 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. On the one hand, the shielding frame 65 can be used to shield the image acquisition mechanism, and on the other hand, it can allow the gas to be discharged to purge the lens of the image acquisition mechanism and the crack.

[0023] 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 the gas can flow to each shielding frame 65; in the first state of the shielding frame 65, each shielding frame 65 is spliced along the circumferential direction of the outer sleeve 1 to form a shielding area, which is beneficial for the gas to be discharged from the exhaust hole to purge the lens of the image acquisition mechanism and the crack; in the second state of the shielding frame 65, the shielding frame 65 rotates in the axial direction of the outer sleeve 1 (i.e., the direction from the inside to the outside of the outer sleeve 1), so that the adjacent edges of the shielding frames 65 are separated from each other to form an avoidance space, enabling the image acquisition mechanism to extend from the avoidance space to the open end of the outer sleeve 1 to capture the crack.

[0024] The bridge crack measurement device according to the embodiments of the present application solves the problems that the existing measurement devices cannot clean the cracks and the lenses of the image acquisition mechanism. The bridge crack measurement device according to the embodiments of the present application is provided with a purging mechanism 6, and the purging mechanism 6 includes an elastic airbag 61, a connecting component 64 and a shielding frame 65. An exhaust hole is formed in the shielding frame 65; the image acquisition mechanism can extend out of the open end of the outer sleeve 1 for acquiring bridge crack patterns; wherein, when the shielding frame 65 is in the first state, the adjacent edges of two adjacent shielding frames 65 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. The gas in the elastic airbag 61 can flow to the exhaust hole and be discharged, realizing purging of the lens of the image acquisition mechanism and purging of the cracks, thereby effectively purging the sundries in the cracks and purging 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 cracks, and improving the measurement accuracy and precision; when the shielding frame 65 is in the second state, the shielding frame 65 rotates so that the adjacent edges of two adjacent shielding frames 65 are separated from each other to form an avoidance space, which is beneficial for the image acquisition mechanism to extend out of the open end of the outer sleeve 1 and reliably capture the crack image.

[0025] As an implementable manner, as shown in Figure 5 , 9 and 10, each connecting component 64 includes: a ring frame 641, which is arranged along the inner circumference of the outer sleeve 1. The ring frame 641 includes a gas accommodation cavity, and the gas accommodation cavity is communicated with the elastic airbag 61; a folding pipe 643, which includes a first section and a second section that are at a predetermined angle and communicate with each other. The first section is communicated with the gas accommodation cavity, and the second section is located on the side of the ring frame 641 close to the shielding frame 65; a rotating sleeve 644, which is rotatably connected to the outside of the second section and communicates with the inside of the second section; a connecting pipe 645, one end of which is connected to the rotating sleeve 644 and communicates with the inside of the rotating sleeve 644, and the other end of the connecting pipe 645 is connected to each shielding frame 65 and communicates with the exhaust hole.

[0026] Among them, the ring frame 641 includes a gas accommodation chamber for the gas flow inside the elastic airbag 61; the corrugated pipe 643 is used to connect the ring frame 641 and the shielding frame 65, and the corrugated pipe 643, the rotating sleeve 644 and the connecting pipe 645 are used to communicate the ring frame 641 and the shielding frame 65, and the first section and the second section of the corrugated pipe 643 can be perpendicular to each other. The rotating sleeve 644 is rotationally matched with the second section of the corrugated pipe 643, and the connecting pipe 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 corrugated pipe 643 (the second section of the corrugated pipe 643 can be perpendicular to the axial direction of the outer sleeve 1), thereby realizing the axial rotation of the shielding frame 65 on the outer sleeve 1 to blow the lens and cracks of the image acquisition mechanism, and facilitating the image acquisition mechanism to extend out of the open end of the outer sleeve 1.

[0027] In a preferred embodiment, the communication component 64 further includes a reset member for driving the shielding frame 65 to rotate by the connecting pipe 645 and resetting to the first state after rotation.

[0028] Among them, the reset member can be but is not limited to a torsion spring, a scroll spring 646, etc. One end of the scroll spring 646 is connected to the second section of the corrugated pipe 643, and the other end is connected to the rotating sleeve 644.

[0029] It can be understood that the gas enters the interior of the shielding frame 65 through the ring frame 641, the corrugated pipe 643, the rotating sleeve 644 and the connecting pipe 645. During the process of the image acquisition mechanism extending out of the open end of the outer sleeve 1, it pushes the shielding frame 65, so that the shielding frame 65, the connecting pipe 645 and the rotating sleeve 644 rotate around the second section of the corrugated pipe 643. Under the action of the reset member, during the process of the image acquisition mechanism returning to the interior of the outer sleeve 1, the shielding frame 65 can return to the original position.

[0030] In this embodiment, the reset member can ensure the reliable rotation of the shielding frame 65, and at the same time enable the shielding frame 65 to reset to the first state after rotation, realizing the shielding of the image acquisition mechanism and the blowing of the image acquisition mechanism and the cracks.

[0031] As an implementable way, one end of the ring frame 641 is open, and the communication component 64 further includes: An air outlet pipe 63, which is communicated with the elastic airbag 61; 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 accommodation chamber with the inner wall of the ring frame 641. The gas accommodation chamber is communicated with the air outlet pipe 63, and the first section of the corrugated pipe 643 penetrates through the rotating ring plate 642 and is fixedly connected to the rotating ring plate 642.

[0032] In this embodiment, the rotating ring plate 642 can drive the shielding frame 65 to rotate, which is beneficial to realizing the omnidirectional blowing of the image acquisition mechanism and the cracks.

[0033] As an implementable manner, such as Figure 5 , Figure 7 , Figure 8 and Figure 9 shown, the measuring device further includes a rotating mechanism 66, and the rotating mechanism 66 includes: A rotating rod 662, one end in the length direction of the rotating rod 662 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 a driving member for rotating under the drive of the driving member; A gear 664, the gear 664 is installed on the rotating rod 662; A toothed ring 665, the toothed ring 665 is rotatably connected to the outer sleeve 1 and meshes with the gear 664; A rotating ring 666, the rotating ring 666 is rotatably connected to the outer sleeve 1, and the rotating ring 666 is connected to the rotating ring plate 642 for driving the rotating ring plate 642 to rotate; An extrusion rod 67, one end of the extrusion rod 67 is installed on the outer wall of the toothed ring 665, and the other end of the extrusion rod 67 is installed on the outer wall of the rotating ring 666 for extruding the elastic airbag 61 during rotation.

[0034] Among them, the rotating rod 662 is drivingly connected to the driving member through a 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 key connection, etc. The rotation of the rotating rod 662 drives the gear 664 to rotate. The gear 664 meshes with the toothed ring 665 to drive the toothed ring 665 to rotate. An extrusion rod 67 is connected between the toothed ring 665 and the rotating ring 666, so as to drive the extrusion rod 67 and the rotating ring 666 to rotate. The extrusion rod 67 extrudes the elastic airbag 61 during rotation, and the gas flows to the ring frame 641 through the air 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 folding pipe 643, and the gas enters the shielding frame 65 through the folding pipe 643 and is discharged from the exhaust hole to realize the purging of the crack and the lens of the image acquisition mechanism.

[0035] As an implementable manner, such as Figure 2 , Figure 4 , Figure 6 and Figure 7 shown, the measuring device further includes a lifting mechanism 5, and the lifting mechanism 5 includes: A limiting rod 51, installed inside the outer sleeve 1 and extending along the axial direction of the outer sleeve 1; A mounting plate 52, slidably connected to the limiting rod 51, and the image acquisition mechanism is installed on the mounting plate 52; The ejection assembly 54 is located on one side of the mounting plate 52, and the ejection assembly 54 is drivingly connected to the driving member. The ejection assembly 54 is used to move towards or away from the mounting plate 52 under the drive of the driving member. When the ejection assembly 54 moves to a state of abutting against the mounting plate 52, the ejection assembly 54 drives the mounting plate 52 to move along the extending direction of the limiting rod 51.

[0036] 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 cracks.

[0037] Among them, the limiting rod 51 has a good guiding function. The mounting plate 52 is used to carry and mount the image acquisition mechanism. The mounting plate 52 is slidably connected to the limiting rod 51, which is beneficial for the mounting plate 52 to drive the image acquisition mechanism to move along the extending 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 towards the mounting plate 52 until the ejection assembly 54 moves to a state of abutting against the mounting plate 52. Then, the driving member drives the ejection assembly 54 to continue moving, and the ejection assembly 54 drives the mounting plate 52 to move along the extending direction of the limiting rod 51, so that the image acquisition mechanism can extend out of the open end of the outer sleeve 1.

[0038] In a preferred embodiment, the limiting rod 51 includes at least two, and the at least two limiting rods 51 are evenly spaced along the circumferential direction of the outer sleeve 1. The lifting mechanism 5 further includes an elastic member 53. One end of the elastic member 53 in the direction of elastic deformation is connected to the mounting plate 52, and the other end is fixed to the inner wall of the outer sleeve 1.

[0039] Among them, the limiting rod 51 can be two, three or more than three. The at least two limiting rods 51 are evenly spaced along the circumferential direction of the outer sleeve 1, which is beneficial for stable guiding and ensuring the stable movement of the image acquisition mechanism. It can be understood that the elastic member 53 can be, but is not limited to, a spring or rubber, etc. 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. The spring is sleeved on the limiting rod 51. One end of the spring in the direction of deformation is connected to the outer sleeve 1, and the other end of the spring in the direction of deformation is connected to the mounting plate 52.

[0040] As a feasible way, as Figure 7 shown, the ejection assembly 54 includes: A threaded rod 541, and the threaded rod 541 is drivingly connected to the driving member; A threaded block 542, and the threaded block 542 is in threaded engagement with the threaded rod 541 and can move along the axial direction of the threaded rod 541; The ejector rod 543 has one end fixed to the threaded block 542, and the other end extends towards the mounting plate 52 and has a predetermined distance from the mounting plate 52. The guiding member extends along the extending direction of the threaded rod 541, and one end of the guiding member is fixed inside the outer sleeve 1, and the other end of the guiding member is connected to the ejector rod 543.

[0041] Among them, the guiding member can be but is not limited to a slide rail or a telescopic rod 544, etc.

[0042] In this embodiment, the driving member drives the threaded rod 541 to rotate. Under the action of the guiding member, the ejector rod 543 can move along the extending direction of the threaded rod 541 driven by the threaded block 542. The ejector rod 543 moves until it abuts against the mounting plate 52, driving the image acquisition mechanism to move.

[0043] In a preferred embodiment, the guiding 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.

[0044] In this embodiment, the guiding member is a telescopic rod 544, which has a simple structure and can reliably limit the degree of freedom of the threaded block 542, so that the threaded block 542 drives the ejector rod 543 to move along the extending direction of the threaded rod 541.

[0045] As an implementable manner, as Figure 7 shown, the measuring device further includes a disengaging assembly 667, and the disengaging assembly 667 includes: A separable connection structure, the rotating rod 662 and the gear 664 are connected through the separable connection structure; A rotating cylinder 6671, the rotating cylinder 6671 is rotatably connected to the gear 664; A folding rod 6672, one end of the folding rod 6672 is inserted into the rotating cylinder 6671 and can move along the length direction of the rotating cylinder 6671, and the other end of the folding rod 6672 is connected to the ejecting assembly 54; A limiting block 6673, the limiting block 6673 is arranged 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 limiting block 6673 and the inner end face of the rotating cylinder 6671 are mutually limited, and the ejecting assembly 54 abuts against the mounting plate 52; The driving member drives the ejecting assembly 54 to move, and the ejecting assembly 54 drives the folding rod 6672 to move, so that the separable connection structure is separated, and the gear 664 is separated from the rotating rod 662.

[0046] It can be understood that the ejection assembly 54 and the rotating mechanism 66 are driven by the same driving member. Therefore, with the setting of the separable connection structure, in the initial state, the separable 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, and the gear 664 rotates, so that the toothed 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, so as to perform all-round purging on the area around the crack and the image acquisition mechanism. During this process, the threaded rod 541 rotates, and under the action of the guiding member, the threaded block 542 drives the ejector rod 543 to move along the extension direction of the threaded rod 541. At the same time, the ejector rod 543 drives the folding rod 6672 and the limiting block 6673 to move. When the ejector rod 543 moves to abut against the mounting plate 52, the limiting block 6673 moves to abut against the end face of the rotating cylinder 6671. At this time, when the ejector rod 543 continues to move, the separable connection structure separates, so that the rotating rod 662 and the gear 664 are separated from each other. The gear 664 moves under the drive of the folding rod 6672 and disengages from the toothed ring 665. The toothed ring 665, the extrusion rod 67 and the shielding frame 65 stop rotating and enter the measurement state. The ejector rod 543 drives the image acquisition mechanism to move along the limiting 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 and avoid affecting the measurement accuracy due to vibration. Measure the movement of the image acquisition mechanism, push open the shielding frame 65. A flexible sealing pad is arranged on the edge of the shielding frame 65, which can protect the surface of the crack from damage, and the flexible sealing pad has a certain flexibility and will deform during the rotation of the shielding frame 65 to avoid collision and interference when two adjacent shielding frames 65 rotate. Measure the image acquisition mechanism to extend, and take a picture of the crack through its lens to obtain the image information of the crack. The image information captured by the image acquisition mechanism is transmitted to the measurement equipment host through electrical connection, and the host analyzes and processes the image to calculate parameters such as the width of the crack, so as to realize the accurate measurement of the bridge crack.

[0047] In a preferred embodiment, the separable connection structure includes a magnetic attraction assembly 663. The magnetic attraction assembly 663 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.

[0048] In this embodiment, one of the first magnetic member and the second magnetic member can be, but is not limited to, a magnet or a ferromagnetic member, as long as the first magnetic member and the second magnetic member can generate magnetic attraction force. Its structure is simple and can reliably realize the separable cooperation between the gear 664 and the rotating rod 662.

[0049] The following describes the bridge crack measurement device of the present invention through a specific embodiment.

[0050] The bridge crack measurement device, such asFigure 1-Figure 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; A boss 2 is provided on the end face of the open end of the outer sleeve 1. There are several groups of bosses 2, which are arranged in a circular pattern to increase the contact stability between the device and the bridge surface and prevent the device from sliding during the measurement process. A motor is provided inside the outer sleeve 1, and the motor is fixed to the closed end of the outer sleeve 1; A lifting mechanism 5 and a purging mechanism 6 are also provided inside the outer sleeve 1. The purging mechanism 6 includes: an elastic airbag 61, which is connected to the outer wall of the outer sleeve 1. There are several groups of elastic airbags 61, which are arranged in a circular pattern; an air inlet pipe 62, which is communicated with the inside of the elastic airbag 61, and a one-way valve I is provided in the air inlet pipe 62; an air outlet pipe 63, one end of which is communicated with the inside of the elastic airbag 61, and a one-way valve II is provided in the air outlet pipe 63; A connecting component 64, the connecting component 64 includes: a ring frame 641, which is connected to the inner wall of the outer sleeve 1 and is communicated with the inside of the air outlet pipe 63; a rotating ring plate 642, which is rotatably connected to the ring frame 641; a folding pipe 643, which penetrates through the rotating ring plate 642 and is connected to it, and the folding pipe 643 is communicated with the inside of the ring frame 641; a rotating sleeve 644, which is communicated with the inside of the folding pipe 643 and is rotatably connected to it; a connecting pipe 645, which is connected to the rotating sleeve 644 and is communicated with its inside, and the connecting pipe 645 penetrates through one side of the shielding frame 65 and is communicated with its inside; a scroll spring 646, one end of which is connected to the folding pipe 643 and the other end is connected to the rotating sleeve 644. In the connecting component 64, gas sequentially passes through the ring frame 641, the folding pipe 643, the rotating sleeve 644 and the connecting pipe 645 and enters the inside of the shielding frame 65. During the process of the measuring camera 3 extending out, the shielding frame 65 is pushed, so that the shielding frame 65, the connecting pipe 645 and the rotating sleeve 644 rotate around the folding pipe 643. The scroll spring 646 ensures that the shielding frame 65 can return to its original position during the process of the measuring camera 3 returning to the inside of the outer sleeve 1; The rotating mechanism 66 includes: a transmission component 661, one end of which is connected to the output end of the motor 4; a rotating rod 662, which is connected to the other end of the transmission component 661 and one end of which is rotatably connected to the closed end of the outer sleeve 1; a magnetic attraction component 663, one end of which is connected to the other end of the rotating rod 662; a gear 664, which is connected to the other end of the magnetic attraction component 663; a toothed ring 665, which is rotatably connected to the outer sleeve 1 and meshes with the gear 664, and the outer wall of the toothed 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 is connected to the other end of the extrusion rod 67, and the rotating ring 666 is connected to the rotating ring plate 642; The lifting mechanism 5 includes: a limit rod 51 connected to the closed end of the outer sleeve 1; a mounting plate 52 slidably connected to the limit rod 51 and connected to the measuring camera 3; an elastic member 53 with one end connected to the closed end of the outer sleeve 1 and the other end connected to the mounting plate 52; and an ejecting assembly 54 with one end connected to the output end of the motor 4 and the other end connected to the closed end of the outer sleeve 1.

[0051] The motor 4 drives the ejecting assembly 54 to move. When the ejecting assembly 54 moves to abut against the mounting plate 52, it drives the mounting plate 52 to move, and then drives the measuring camera 3 to move along the limit rod 51. The elastic member 53 can provide a certain elastic buffer to ensure that the measuring camera 3 remains stable during the lifting process and avoid affecting the measurement accuracy due to vibration. The elastic member 53 can be a spring, a spring sheet, etc.

[0052] The ejecting assembly 54 includes: 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 top rod 543 connected to the threaded block 542; and a telescopic rod 544 with one end connected to the top rod 543 and the other end connected to the closed end of the outer sleeve 1. The motor 4 drives the threaded rod 541 to rotate. Under the limitation 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, so that the top rod 543 moves to abut against the mounting plate 52 and drives the measuring camera 3 to move.

[0053] The bridge crack measuring device further includes: a detachment assembly 667. The detachment assembly 667 includes: a rotating cylinder 6671 rotatably connected to the gear 664; a folding rod 6672 slidably connected to the rotating cylinder 6671 and with one end 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; The magnetic attraction assembly 663 includes: a first magnet 6631 connected to the rotating rod 662; a second magnet 6632 connected to the gear 664, and the second magnet 6632 and the first magnet 6631 have opposite magnetic polarities; 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 adsorbed to the first magnet 6631, the gear 664 is stably connected to the rotating rod 662, the gear 664 and the toothed ring 665 maintain a stable meshing state, and the limit block 6673 is close to the gear 664; Place this device near the bridge crack, with the open end of the outer sleeve 1 close to the crack. The design of the boss 2 can increase the contact stability between the device and the bridge surface, preventing the device from sliding during measurement. 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 ejector rod 543 to move longitudinally. Initially for a period of time, the ejector rod 543 does not abut against the mounting plate 52. During this process, the motor 4 drives the transmission component 661 to rotate, the transmission component 661 drives the rotating rod 662 to rotate, the rotating rod 662 drives the gear 664 to rotate, the gear 664 drives the toothed ring 665 to rotate, the toothed ring 665 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 to squeeze the elastic airbag 61, so that the gas inside the elastic airbag 61 enters the shielding frame 65 through the air outlet pipe 63, the ring frame 641, the folding pipe 643, the rotating sleeve 644 and the connecting pipe 645, and is discharged through the exhaust holes at the top and bottom of the shielding frame 65 to form an air flow, purging 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, 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, purging the area around the crack and the measuring camera 3 in all directions; With the movement of the ejector rod 543, the ejector rod 543 drives the folding rod 6672 and the limit block 6673 to move synchronously. When the ejector 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. The ejector 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 to disengage from the toothed ring 665. The toothed ring 665, the extrusion rod 67 and the shielding frame 65 stop rotating and enter the measurement state. The ejector rod 543 drives the measuring camera 3 to move along the limit rod 51. The elastic member 53 can provide a certain elastic buffer to ensure that the measuring camera 3 remains stable during the lifting process and avoid affecting the measurement accuracy due to vibration. The measuring camera 3 moves and pushes open the shielding frame 65. The flexible gasket can protect the crack surface from damage, and the flexible gasket has a certain flexibility and will deform during the rotation of the shielding frame 65 to avoid collision and interference when adjacent two groups of shielding frames 65 rotate. The measuring camera 3 extends out and takes pictures of the crack through its lens to obtain the image information of the crack. The image information captured by the measuring camera 3 is transmitted to the measuring device host through electrical connection, and the host analyzes and processes the image to calculate parameters such as the width of the crack, realizing the precise measurement of the bridge crack.

[0054] The above description is only a preferred embodiment of the present application and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. Bridge crack measurement device, characterized in that, Comprising: An outer sleeve, which has a closed end and an open end along the axial direction; An image acquisition mechanism, located inside the outer sleeve, and the image acquisition mechanism can extend out of the open end of the outer sleeve for acquiring bridge crack images; A purging mechanism, located inside the outer sleeve, the purging mechanism includes: an elastic airbag, a plurality of communication components and a plurality of shielding frames, each of the shielding frames is penetrated with a plurality of exhaust holes, the elastic airbag is communicated with the plurality of communication components, and each communication component is correspondingly communicated with each shielding frame for gas to flow to the shielding frame and discharge from the exhaust holes; A plurality of the shielding frames are located on the lens side 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, the adjacent edges of two adjacent shielding frames are in contact to form a shielding area on the lens side of the image acquisition mechanism; in the second state, each shielding frame can rotate in the axial direction of the outer sleeve, and the adjacent edges of two adjacent shielding frames are separated from each other to form an avoidance space for the image acquisition mechanism to extend out; A driving member, which is respectively drivingly connected to the image acquisition mechanism and the purging mechanism.

2. The bridge crack measurement device according to claim 1, characterized in that, Each of the communication components includes: A ring frame, which is arranged around the inner circumference of the outer sleeve, and the ring frame includes a gas accommodation cavity, and the gas accommodation cavity is communicated with the elastic airbag; A folding pipe, which includes a first section and a second section that are at a predetermined angle and are communicated with each other. The first section is communicated with the gas accommodation cavity, and the second section is located on the side of the ring frame close to the shielding frame; A rotating sleeve, which is rotatably connected to the outside of the second section and is communicated with the inside of the second section; A connecting pipe, one end of which is connected to the rotating sleeve and is communicated with the inside of the rotating sleeve, and the other end of the connecting pipe is connected to each shielding frame and is communicated with the exhaust holes.

3. The bridge crack measurement device according to claim 2, characterized in that, The communication component 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 rotation.

4. The bridge crack measurement device according to claim 2, characterized in that, One end of the ring frame is open, and the communication component further includes: An air outlet pipe, which is communicated with the elastic airbag; The ring frame includes a rotating ring plate, which is rotatably connected to the open part of the ring frame and defines a gas accommodation cavity with the inner wall of the ring frame. The gas accommodation cavity is communicated with the air outlet pipe, and the first section of the folding pipe penetrates through the rotating ring plate and is fixedly connected to the rotating ring plate.

5. The bridge crack measurement device according to claim 4, wherein The measuring device further includes a rotating mechanism, and the rotating mechanism includes: A rotating rod, one end in the length direction of which 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 for rotating under the drive of the driving member; A gear, which is installed on the rotating rod; A toothed ring, which is rotatably connected to the outer sleeve and meshes with the gear; A rotating ring, which is rotatably connected to the outer sleeve, and the rotating ring is connected to the rotating ring plate for driving the rotating ring plate to rotate; The extrusion rod, one end of the extrusion rod is installed on the outer wall of the toothed ring, and the other end of the extrusion rod is installed on the outer wall of the rotating ring, and is used to extrude the elastic airbag during rotation.

6. The bridge crack measurement device according to claim 5, wherein, The measuring device further includes a lifting mechanism, and the lifting mechanism includes: The limiting rod is installed inside the outer sleeve and extends along the axial direction of the outer sleeve; The mounting plate is slidably connected to the limiting rod, and the image acquisition mechanism is installed on the mounting plate; The ejecting component is located on one side of the mounting plate, and the ejecting component is drivingly connected to the driving member, and is used to move the ejecting component toward or away from the mounting plate under the drive of the driving member. When the ejecting component moves to a state of abutting against the mounting plate, the ejecting component drives the mounting plate to move along the extending direction of the limiting rod.

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

8. The bridge crack measurement device according to claim 6, characterized in that, The ejecting component includes: The threaded rod is drivingly connected to the driving member; The threaded block is in threaded cooperation with the threaded rod and can move along the axial direction of the threaded rod; The ejecting rod, one end of the ejecting rod is fixed on the threaded block, and the other end extends in the direction of the mounting plate and has a predetermined distance from the mounting plate; The guiding member extends along the extending direction of the threaded rod, and one end of the guiding member is fixed inside the outer sleeve, and the other end of the guiding member is connected to the ejecting rod; Preferably, the guiding member includes a telescopic rod, and the extending direction of the telescopic rod is parallel to the extending direction of the threaded rod.

9. The bridge crack measurement device according to claim 6, characterized in that The measuring device further includes a separating component, and the separating component includes: The separable connection structure, the rotating rod and the gear are connected through the separable connection structure; The rotating cylinder, the rotating cylinder is rotatably connected to the gear; The folding rod, one end of the folding rod is inserted into the rotating cylinder and can move along the length direction of the rotating cylinder, and the other end of the folding rod is connected to the ejecting component; The limiting block is arranged 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 limiting block and the inner end face of the rotating cylinder are mutually limited, and the ejecting component abuts against the mounting plate; The driving member drives the ejecting component to move, and the ejecting component drives the folding rod to move, so that the separable connection structure is separated, and the gear is separated from the rotating rod.

10. The bridge crack measurement device according to claim 9, characterized in that, The separable connection structure includes a magnetic attraction component, and the magnetic attraction component includes a first magnetic member and a second magnetic member. The first magnetic member is connected to the rotating rod, and the second magnetic member is connected to the gear.

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