Water conservancy project crack change quantitative monitoring device

Abstract

The invention relates to a hydraulic engineering crack change quantitative monitoring device, which comprises a rack arranged at the position of a hydraulic engineering crack; the measuring mechanism is used for measuring the crack; the rubbing mechanism is used for rubbing the crack and is convenient for the measuring mechanism to measure; the rubbing mechanism comprises a support arranged on the rack in a lifting mode; the box body is arranged in the bracket and is variable in size; the phase change assembly is arranged in the box body and is used for rubbing cracks through deformation change; and the pull-out assembly is used for pulling out the phase change assembly after rubbing of the phase change assembly is completed. According to the method, the maximum deformation of the crack is measured by rubbing the crack, and monitoring and supervision of the crack deformation of the water conservancy project are improved.

Description

Technical Field

[0001] This application relates to the technical field of crack monitoring, and in particular to a quantitative monitoring device for crack changes in hydraulic engineering. Background Technology

[0002] Currently, water conservancy projects (such as dams, canals, and sluice chambers) inevitably develop cracks during long-term operation due to factors such as temperature stress, uneven settlement, water pressure load, and material aging. The expansion of these cracks not only affects the appearance of the structure but can also lead to steel corrosion, leakage, and even endanger the overall structural safety. Therefore, accurate and real-time quantitative monitoring of crack opening (width), displacement, and depth is crucial.

[0003] The relevant technologies mainly use vernier calipers, feeler gauges, or simple crack observation markers. Their working principle relies on regular manual inspections to directly read values ​​or observe whether the markers are broken. Of course, some technologies also use vibrating wire crack gauges, potentiometer displacement gauges, etc., to monitor cracks through sensors.

[0004] The aforementioned technologies have the following drawbacks: regardless of the monitoring method used, there may be a failure to measure the maximum value of the crack, resulting in errors in the measurement of crack changes. Therefore, it is necessary to solve how to monitor the location of the maximum crack. Summary of the Invention

[0005] To address the aforementioned technical issues, this application provides a quantitative monitoring device for crack changes in hydraulic engineering projects.

[0006] The quantitative monitoring device for crack changes in hydraulic engineering provided in this application adopts the following technical solution:

[0007] A quantitative monitoring device for crack changes in hydraulic engineering projects, comprising:

[0008] The frame is installed at the location of cracks in the hydraulic engineering project;

[0009] Measuring apparatus for measuring cracks; and

[0010] The rubbing mechanism makes a rubbing of the crack, which also facilitates measurement by the measuring mechanism;

[0011] The imprinting mechanism includes:

[0012] The support frame is mounted on the machine frame with a lifting mechanism.

[0013] The enclosure is housed within a support frame and its size is variable.

[0014] Phase change assembly, housed within a housing and used to imprint cracks through deformation; and

[0015] Remove the component; after the phase change component has been printed, remove the phase change component.

[0016] Furthermore, the enclosure includes:

[0017] The outer casing is mounted on a bracket and has an opening at the bottom; and

[0018] The inner frame is flexibly set within the outer box.

[0019] Both ends of the inner frame are open. The upper part of the phase change component is located inside the outer box, and the lower part is located inside the inner frame.

[0020] Furthermore, the phase change component includes:

[0021] The magnetic coil is located in the outer casing;

[0022] The capsule body is fixedly installed inside the outer casing and suspended within the inner frame; and

[0023] The compression section is used to compress the capsule.

[0024] The capsule is filled with magnetorheological fluid. When the magnetorheological fluid is in a fluid state, it fills the cracks. When the magnetorheological fluid is in a solid state, it completes the imprinting of the cracks.

[0025] Furthermore, the extrusion section includes:

[0026] Rack 1 is fixedly connected to the inner frame and slidably installed inside the outer box;

[0027] The gear is rotatably mounted inside the outer casing;

[0028] Rack two, meshing with the gear and slidably disposed within the outer casing; and

[0029] The extrusion block is fixedly connected to the rack and pinion.

[0030] The extrusion block moves downwards as the inner frame moves upwards, extruding pressure on the bladder.

[0031] Furthermore, the pull-out components are configured as multiple and are respectively located on both sides of the inner frame;

[0032] The pull-out component includes:

[0033] A padding cloth, one end of which is fixed to the bottom of the capsule and initially folded; and

[0034] The power unit is used to pull the matting cloth;

[0035] The other end of the padding cloth is connected to the power unit. In the initial state, part of the padding cloth is located at the bottom of the bladder and part is located on the side wall of the bladder.

[0036] Furthermore, the power unit includes:

[0037] Phase transition units provide power through phase transitions;

[0038] Lever, rotating setting inside the outer casing; and

[0039] One end of the pull rope is fixed to the end of the lever, and the other end is connected to the padding cloth;

[0040] The phase change assembly provides power to the lever through phase change, and the lever rotates at a position away from the pull rope.

[0041] Furthermore, the phase transition group includes:

[0042] Shape memory alloy wires begin to shrink and recover when the phase transition temperature is exceeded;

[0043] The power block is fixedly connected to one end of the shape memory alloy wire, and

[0044] An electric heating element heats the shape memory alloy wire until it exceeds the phase transition temperature;

[0045] When the shape memory alloy wire contracts, the lever drives the pull rope to pull the padding cloth upwards.

[0046] Furthermore, the pull-out assembly also includes a lubrication part for lubricating the padding cloth;

[0047] The lubrication section includes:

[0048] Flexible paste, used to fill lubricant; and

[0049] The lubricant is fixed to one end of the lever near the pull rope;

[0050] The flexible paste is fixed on the lubricating block, with the opening of the flexible paste facing the padding cloth, and the flexible paste moves along the path of the padding section as the lever moves.

[0051] In summary, the beneficial technical effects of this application are as follows:

[0052] 1. The rubbing mechanism is used to rub the crack in this part. After the rubbing is completed, it is easy to determine the part with the maximum distance of the crack. Therefore, it is possible to measure the location of the maximum deformation of the crack. This solves the technical problem that the maximum deformation of the crack cannot be determined during the crack measurement process, and greatly improves the accuracy of crack monitoring.

[0053] 2. By lowering the support to the position corresponding to the crack, the inner frame abuts against the crack. Continuing to push the support downwards, the inner frame begins to move towards the outer box, and the spring is compressed and deformed. The capsule is also squeezed into the crack, and during this process, the compression part begins to compress the capsule, ensuring that the capsule fills every corner of the crack. Simultaneously, as the inner frame moves upwards, rack one moves upwards, and under the transmission of the gears, rack two moves downwards. Rack two drives the compression block to compress the capsule, and the flowing magnetorheological fluid inside the capsule fills the crack, thus achieving the effect of the compression block filling the crack with the capsule.

[0054] 3. The shape memory alloy wire undergoes a phase change. The lever is used to increase the phase change of the shape memory alloy wire. The other end of the lever is pulled upwards, and the pull rope pulls the padding cloth upwards. In this embodiment, after the padding cloth is pulled, there is a gap between the solid state of the magnetorheological fluid in the capsule and the crack, which makes it easier to pull the capsule out. The lever and the outer box are connected by a torsion spring, which makes it easy for the lever to return to the initial position. In the initial state, although the capsule is also in a natural hanging state, the padding cloth is long enough and will not be pulled. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0056] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1. Rack;

[0059] 2. Bracket;

[0060] 3. Box body; 30. Outer box; 31. Inner frame; 32. Slider; 33. Slide rail; 34. Spring;

[0061] 40. Magnetic coil; 41. Encapsulation body; 42. Rack one; 43. Gear; 44. Rack two; 45. Compression block;

[0062] 50. Padding cloth; 51. Lever; 52. Pull rope; 53. Shape memory alloy wire; 54. Power block; 55. Flexible paste; 56. Lubricant block. Detailed Implementation

[0063] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] This application discloses a quantitative monitoring device for crack changes in hydraulic engineering. (Refer to...) Figures 1-2 The device includes: a frame 1, installed at the location of a crack in a hydraulic engineering project; a measuring mechanism for measuring the crack; and a rubbing mechanism for rubbing the crack and facilitating measurement by the measuring mechanism. The frame 1 can be fixed to the ground or locked in place near the crack to be measured. The measuring mechanism can use existing measuring equipment, such as measuring with a ruler or infrared measurement. The rubbing mechanism is used to rub the crack, and the rubbed part is easy to determine the maximum distance of the crack. Therefore, the location of the maximum deformation of the crack can be measured, thus solving the technical problem of not being able to determine the maximum deformation of the crack during the crack measurement process, and greatly improving the accuracy of crack monitoring.

[0065] The rubbing mechanism includes: a support 2, which is lifted and mounted on a frame 1; a housing 3, which is housed within the support 2 and has a variable size; a phase change component, which is housed within the housing 3 and is used to rub cracks through deformation; and a pull-out component. After the phase change component has been rubbed, it is pulled out. The support 2 slides vertically on the frame 1 under the control of an electric push rod or a cylinder. The size of the housing 3 can be adjusted according to different monitoring environments. For example, when rubbing larger cracks, a larger housing 3 is needed, while for smaller cracks, a housing 3 of the corresponding size is sufficient, improving the convenience of rubbing. When the phase change component is in a fluid state, it can fill the crack. After the phase change component fills the corresponding crack, it can solidify and completely rub the crack. After the pull-out component removes the phase change component, the rubbed phase change component is observed, and the maximum size of the crack after rubbing is measured by a measuring mechanism, thereby achieving the effect of monitoring the maximum deformation of the crack.

[0066] The housing 3 includes: an outer housing 30, which is mounted on the support 2 and has an open bottom; and an inner frame 31, which is elastically mounted on the outer housing 30. Both ends of the inner frame 31 are open. The upper part of the phase change component is located inside the outer housing 30, and the lower part is located inside the inner frame 31. Multiple sliders 32 are fixedly connected to both sides of the inner frame 31. Multiple sliding grooves 33 are provided on the corresponding side walls of the outer housing 30. The sliders 32 slide and adapt to the sliding grooves 33. The bottom end of the sliding groove 33 is closed to prevent the sliders 32 from falling out of the sliding groove 33. A spring 34 is fixedly connected between the top of the slider 32 and the inner wall of the corresponding end of the sliding groove 33. Thus, the outer housing 30 and the inner frame 31 are elastically mounted. In the initial state, the spring 34 is in a free deformation state, and the inner frame 31 hangs down naturally.

[0067] The phase change component includes: a magnetic coil 40, disposed in the outer casing 30; a capsule 41, fixedly disposed inside the outer casing 30 and suspended inside the inner frame 31; and a squeezing part for squeezing the capsule 41; the capsule 41 is filled with magnetorheological fluid, and when the magnetorheological fluid in the capsule 41 is in a flowing state, it fills the crack, and when the magnetorheological fluid is in a solid state, it completes the imprinting of the crack. The capsule 41 is made of wear-resistant and damage-resistant materials. When the magnetic coil 40 starts to generate a strong magnetic field, the magnetorheological fluid in the capsule 41 begins to undergo a phase change. The specific working principle adopts the working principle of the prior art, which will not be described in detail in this embodiment. By lowering the support 2 to the position corresponding to the crack, the inner frame 31 abuts against the position of the crack. The support 2 is pushed downward, and the inner frame 31 begins to move towards the outer casing 30, and the spring 34 is squeezed and deformed. The capsule 41 is also squeezed into the crack. During this process, the squeezing part begins to squeeze the capsule 41 to ensure that the capsule 41 fills all corners of the crack.

[0068] The extrusion unit includes: a rack 42, fixedly connected to the inner frame 31 and slidably disposed within the outer casing 30; a gear 43, rotatably disposed within the outer casing 30; a rack 44, meshing with the gear 43 and slidably disposed within the outer casing 30; and an extrusion block 45, fixedly connected to the rack 44. The extrusion block 45 moves downwards when the inner frame 31 moves upwards, extruding pressure on the bladder 41. The rack is fixedly connected to the top of the inner frame 31. The gear 43's rotation axis is horizontal. Rack 2 44 and rack 1 42 are located on both sides of gear 43. The bottom end of rack 2 44 is fixedly connected to extrusion block 45. Extrusion block 45 is set as a disc. When inner frame 31 moves upward, rack 1 42 moves upward. Under the transmission action of gear 43, rack 2 44 moves downward. Rack 2 44 drives extrusion block 45 to extrude the capsule 41. The flowing magnetorheological fluid in the capsule 41 fills the cracks, thereby achieving the effect of extrusion block 45 filling the capsule 41 with cracks.

[0069] Multiple pull-out components are provided and located on opposite sides of the inner frame 31. Two or four pull-out components are provided, symmetrically arranged with respect to the central axis of the inner frame 31. In this embodiment, two components are preferred. Each pull-out component includes: a padding cloth 50, one end of which is fixed to the bottom of the bladder body 41 and is initially folded; and a power unit for pulling the padding cloth 50. The other end of the padding cloth 50 is connected to the power unit. In the initial state, part of the padding cloth 50 is located at the bottom of the bladder body 41, and part... Located on the side wall of the capsule 41, the padding cloth 50 is made of a fabric with low friction and high toughness. Part of the padding cloth 50 is folded at the bottom of the capsule 41. Therefore, when the capsule 41 fills the crack, part of the padding cloth 50 is located at the bottom of the capsule 41, part is located on the side wall of the capsule 41, and part is located on the top of the capsule 41. When the magnetorheological fluid inside the capsule 41 is solid, pulling the padding cloth 50 creates a gap between the capsule 41 and the side wall of the crack, making it easier to pull the solid capsule 41 out of the crack.

[0070] The power unit includes: a phase change assembly that provides power through phase change; a lever 51 that is rotatably mounted inside the outer casing 30; and a pull rope 52, one end of which is fixed to the end of the lever 51 and the other end of which is connected to the padding cloth 50. Of course, a guide roller is provided on the outer casing 30 to facilitate the guidance of the pull rope 52. The phase change assembly provides power to the lever 51 through phase change. The lever 51 is rotatably connected to a position away from the pull rope 52. In this embodiment, the phase change assembly is chosen to provide power instead of an electric actuator or cylinder because, firstly, the space inside the outer casing 30 is limited and not convenient for installation, and secondly, the phase change assembly has a large instantaneous force, which facilitates the rapid pulling of the padding cloth 50 without damaging the solid magnetorheological fluid inside the capsule 41. In contrast, an electric actuator or cylinder continuously pulls the magnetorheological fluid inside the capsule 41, which can damage the magnetorheological fluid.

[0071] The phase change assembly includes: a shape memory alloy wire 53, which begins to shrink and recover when its phase change temperature is exceeded; a power block 54, fixedly connected to one end of the shape memory alloy wire 53; and an energizing component, which heats the shape memory alloy wire 53 until its phase change temperature is exceeded. When the shape memory alloy wire 53 shrinks, the lever 51 drives the pull rope 52 to pull the padding cloth 50 upwards. The shape memory alloy wire 53 uses an iron-nickel alloy as described in existing technology. It undergoes a phase change when its phase change temperature is exceeded. Initially, it is in a stretched and soft state, but after exceeding the phase change temperature, it begins to shrink. The shape memory alloy wire 53 drives the power block 54 to move. The energizing component utilizes the shape memory... When the alloy wire 53 is energized, it undergoes a phase change. The lever 51 is used to increase the phase change of the shape memory alloy wire 53. The other end of the lever 51 is pulled upwards, and the pull rope 52 pulls the padding cloth 50 upwards. In this embodiment, it is only necessary to pull the padding cloth 50 to create a gap between the solid state of the magnetorheological fluid in the capsule 41 and the crack, which facilitates the pulling out of the capsule 41. The lever 51 is connected to the outer box 30 by a torsion spring, which facilitates the lever 51 to return to its initial position. In the initial state, although the capsule 41 is also in a naturally drooping state, the padding cloth 50 is long enough and will not be pulled.

[0072] The pull-out assembly also includes a lubrication section for lubricating the padding cloth 50. The lubrication section includes a flexible paste 55 for filling with lubricant and a lubricating block 56 fixed to one end of the lever 51 near the pull rope 52. The lubrication section is used to increase the lubricity of the padding cloth 50. In this embodiment, the flexible paste 55 is filled with a highly fluid lubricating liquid, such as lubricating oil or water. The padding cloth 50 has strong adsorption properties. When the lever 51 starts to swing, the lever 51 drives the flexible paste 55 to swing toward the padding cloth 50. The lubricating liquid in the flexible paste 55 comes into contact with the padding cloth 50. The opening of the flexible paste 55 swings toward the padding cloth 50, and the padding cloth 50 begins to absorb the lubricating liquid in the flexible paste 55. The lubricating liquid on the padding cloth 50 begins to spread until the entire padding cloth 50 absorbs the lubricating liquid, thereby reducing the friction between the padding cloth 50 and the bladder 41, making it easier to pull out the bladder 41.

[0073] The implementation principle of the quantitative monitoring device for crack changes in water conservancy projects in this application embodiment is as follows: the rubbing mechanism is used to rub the crack in this part. After the rubbing is completed, it is easy to judge the part with the maximum distance of the crack. Therefore, the location of the maximum deformation of the crack can be measured. Thus, the technical problem of not being able to judge the measurement effect of the maximum deformation of the crack during the crack measurement process is solved, and the accuracy of crack monitoring is greatly improved.

[0074] By lowering the bracket 2 to the position corresponding to the crack, the inner frame 31 abuts against the crack. As the bracket 2 is pushed downward, the inner frame 31 begins to move towards the outer box 30, and the spring 34 is compressed and deformed. The bladder 41 is also squeezed into the crack. During this process, the squeezing part begins to squeeze the bladder 41 to ensure that the bladder 41 fills every corner of the crack. At the same time, when the inner frame 31 moves upward, the rack 1 42 moves upward. Under the transmission action of the gear 43, the rack 2 44 moves downward. The rack 2 44 drives the squeezing block 45 to squeeze the bladder 41. The flowing magnetorheological fluid inside the bladder 41 fills the crack, thereby achieving the effect of the squeezing block 45 filling the bladder 41 with the crack.

[0075] The shape memory alloy wire 53 undergoes a phase change, and the lever 51 is used to increase the phase change of the shape memory alloy wire 53. The other end of the lever 51 is pulled upwards, and the pull rope 52 pulls the padding cloth 50 upwards. In this embodiment, it is only necessary to pull the padding cloth 50 to create a gap between the magnetorheological fluid solid and the crack in the capsule 41, which makes it easier to pull the capsule 41 out. The lever 51 is connected to the outer box 30 by a torsion spring, which makes it easy for the lever 51 to return to its initial position. In the initial state, although the capsule 41 is also in a naturally drooping state, the padding cloth 50 will not be pulled because it is long enough.

[0076] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "an," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar terms mean that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0077] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quantitative monitoring device for crack changes in hydraulic engineering, characterized in that, include: The frame is installed at the location of cracks in the hydraulic engineering project; A measuring device used to measure cracks; as well as The rubbing mechanism makes a rubbing of the crack, which also facilitates measurement by the measuring mechanism; The imprinting mechanism includes: The support frame is mounted on the machine frame with a lifting mechanism. The enclosure is housed within a support frame and its size is variable. Phase change assembly, housed within a housing and used to imprint cracks through deformation; and Remove the component; after the phase change component has been printed, remove the phase change component.

2. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 1, characterized in that, The enclosure includes: The outer casing is mounted on a bracket and has an opening at the bottom; and The inner frame is flexibly set within the outer box. Both ends of the inner frame are open. The upper part of the phase change component is located inside the outer box, and the lower part is located inside the inner frame.

3. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 2, characterized in that, The phase change component includes: The magnetic coil is located in the outer casing; The capsule body is fixedly installed inside the outer casing and suspended within the inner frame; and The compression section is used to compress the capsule. The capsule is filled with magnetorheological fluid. When the magnetorheological fluid is in a fluid state, it fills the cracks. When the magnetorheological fluid is in a solid state, it completes the imprinting of the cracks.

4. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 3, characterized in that, The extrusion section includes: Rack 1 is fixedly connected to the inner frame and slidably installed inside the outer box; The gear is rotatably mounted inside the outer casing; Rack two, meshing with the gear and slidably disposed within the outer casing; and The extrusion block is fixedly connected to the rack and pinion. The extrusion block moves downwards as the inner frame moves upwards, extruding pressure on the bladder.

5. A quantitative monitoring device for crack changes in hydraulic engineering according to claim 4, characterized in that, The pull-out components are configured in multiple ways and are located on both sides of the inner frame; The pull-out component includes: A padding cloth, one end of which is fixed to the bottom of the capsule and initially folded; and The power unit is used to pull the matting cloth; The other end of the padding cloth is connected to the power unit. In the initial state, part of the padding cloth is located at the bottom of the bladder and part is located on the side wall of the bladder.

6. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 5, characterized in that, The power unit includes: Phase transition units provide power through phase transitions; Lever, rotating setting inside the outer casing; and One end of the pull rope is fixed to the end of the lever, and the other end is connected to the padding cloth; The phase change assembly provides power to the lever through phase change, and the lever rotates at a position away from the pull rope.

7. A quantitative monitoring device for crack changes in hydraulic engineering according to claim 6, characterized in that, The phase transition group includes: Shape memory alloy wires begin to shrink and recover when the phase transition temperature is exceeded; The power block is fixedly connected to one end of the shape memory alloy wire, and An electric heating element heats the shape memory alloy wire until it exceeds the phase transition temperature; When the shape memory alloy wire contracts, the lever drives the pull rope to pull the padding cloth upwards.

8. A quantitative monitoring device for crack changes in hydraulic engineering according to claim 7, characterized in that, The pull-out assembly also includes a lubrication section for lubricating the padding cloth; The lubrication section includes: Flexible paste, used to fill lubricant; and The lubricant is fixed to one end of the lever near the pull rope; The flexible paste is fixed on the lubricating block, with the opening of the flexible paste facing the padding cloth, and the flexible paste moves along the path of the padding section as the lever moves.

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