An aperture deformation measurement device

Abstract

The present application provides a kind of aperture deformation measuring device, including inner sleeve, clamping ring assembly, sliding assembly, articulated support assembly, traveling wheel and guide assembly, the inside of inner sleeve is provided with strain measuring device, strain measuring device has a measuring element, inner sleeve has a measurement hole site, measuring element corresponds with measurement hole site;Clamping ring assembly is fixed to the outside of inner sleeve;Sliding assembly is fixed to the outside of inner sleeve;Articulated support assembly is fixed on clamping ring assembly, and is slidably connected with sliding assembly;Traveling wheel is fixed on articulated support assembly;Guide assembly is fixed to the outside of inner sleeve;Wherein, articulated support assembly is on measuring element, traveling wheel is on the hole wall of the hole to be measured, to be driven by hole wall to press traveling wheel and bring the articulated support assembly relative to inner sleeve telescopic sliding, in turn, by telescopic sliding articulated support assembly press measuring element moves in measurement hole site, to measure the aperture deformation data of the hole to be measured.

Description

Technical Field

[0001] This invention belongs to the field of borehole monitoring technology in geotechnical engineering, and specifically relates to a borehole deformation measuring device. Background Technology

[0002] Drilling is a common method in geotechnical engineering for geological exploration, geostress testing, energy storage detection, excavation, and surrounding rock quality inspection. High geostress, excavation disturbance, and complex geological conditions often cause deformation of the surrounding rock near the borehole, leading to changes in the borehole diameter and hindering the smooth progress of engineering activities. Therefore, real-time monitoring of borehole diameter changes and taking targeted measures are essential to ensure the smooth operation of engineering projects. Furthermore, changes in borehole diameter can indirectly reflect the stress state of the surrounding rock mass, allowing for analysis and calculation of the stress state of the surrounding rock.

[0003] Currently, multi-arm borehole caliper is mostly used to measure borehole deformation. This instrument is not only complex in structure, but also has a lot of electronic components. Its measuring arm is prone to sand jamming and wear in the complex geological environment downhole. It has defects in system stability and environmental adaptability, and cannot perform full-length fine inspection of boreholes in poor geological conditions.

[0004] Therefore, how to provide a simple, stable, and miniaturized aperture deformation measurement device to improve the formation adaptability and equipment stability of the device is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a bore deformation measuring device to at least solve one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] This invention provides a hole diameter deformation measuring device, comprising: an inner sleeve, wherein a strain gauge is disposed inside the inner sleeve, the strain gauge having a measuring element, the inner sleeve having a measuring hole, and the measuring element corresponding to the measuring hole; a locking ring assembly fixed to the outside of the inner sleeve; a sliding assembly fixed to the outside of the inner sleeve; a hinged bracket assembly fixed to the locking ring assembly and slidably connected to the sliding assembly; a traveling wheel fixed to the hinged bracket assembly; and a guide assembly fixed to the outside of the inner sleeve; wherein the hinged bracket assembly abuts against the measuring element, and the traveling wheel abuts against the hole wall of the hole to be measured, so that the traveling wheel is pressed against the hole wall to drive the hinged bracket assembly to slide relative to the inner sleeve, thereby pressing the measuring element to move within the measuring hole through the sliding motion of the hinged bracket assembly to measure the hole diameter deformation data of the hole to be measured.

[0008] In the first aspect, the hinged bracket assembly includes: a telescopic body having a rotating end, a sliding end, a traveling end, and a pressing part; wherein the rotating end is fixed to the locking ring assembly; the sliding end is slidably connected to the sliding assembly; the traveling end is fixedly connected to the traveling wheel; the pressing part presses against the measuring element; the traveling end drives the sliding end to telescopically slide relative to the inner sleeve through the telescopic body, thereby pressing the measuring element to move within the measuring hole through the pressing part during telescopic sliding.

[0009] In the first aspect, the hinged bracket assembly further includes a plurality of hinged brackets, each of the hinged brackets including: a swing bracket, one end of which is the rotating end and is hingedly connected to the locking ring assembly through the rotating end, and the other end of which is the traveling end and is hingedly connected to the traveling wheel through the traveling end; and a sliding bracket, one end of which is hingedly connected to the middle part of the swing bracket, and the other end of which is the sliding end and is slidably connected to the sliding assembly through the sliding end, wherein the middle part of the sliding bracket is provided with the pressing part and presses against the measuring element through the pressing part; wherein, the hole wall pressing against the traveling wheel drives the swing bracket to swing about the rotating end as the center towards the inner sleeve, and then the middle part of the swing bracket in swinging drives the sliding bracket to slide towards the inner sleeve, so that the middle part of the sliding bracket presses against the measuring element within the measuring hole through the pressing part.

[0010] In the first aspect, the sliding assembly includes: a sliding body and a sliding component, the sliding body including a first fixed end, a second fixed end and a connecting portion; wherein the first fixed end and the second fixed end are both fixed to the locking ring assembly; the sliding component is located between the first fixed end and the second fixed end and is hingedly connected to the sliding end through the connecting portion; the connecting portion drives the sliding component to slide relative to the surface of the inner sleeve between the first fixed end and the second fixed end through the sliding bracket in the sliding process.

[0011] In the first aspect, the locking ring assembly includes: an upper locking ring, comprising a first ring body and a plurality of first locking portions, the first ring body being fixed to the outside of the inner sleeve, the plurality of first locking portions being evenly spaced along the circumferential direction of the first ring body, and each first locking portion being hinged to the rotating end of a corresponding swing bracket; and a middle locking ring, comprising a second ring body and a plurality of second locking portions, the second ring body being fixed to the outside of the inner sleeve, the plurality of second locking portions being evenly spaced along the circumferential direction of the second ring body, and each second locking portion being hinged to the rotating end of a corresponding swing bracket; and a middle locking ring, comprising a second ring body and a plurality of second locking portions, the second ring body being fixed to the outside of the inner sleeve, the plurality of second locking portions being evenly spaced along the circumferential direction of the second ring body, and each second locking portion being hinged to the rotating end of a corresponding swing bracket; and a middle locking ring, comprising a second ring body and a plurality of second locking portions, the middle locking ring including a first ring body and a second ring body, the middle locking ring including a second ... Each of the connecting parts is fixedly connected to the first fixed end of a corresponding sliding body; the lower locking ring includes a third ring body and a plurality of third locking parts, the third ring body is fixed to the outside of the inner sleeve, and the plurality of third locking parts are evenly spaced along the circumferential direction of the third ring body, and each third locking part is fixedly connected to the second fixed end of a corresponding sliding body; wherein, the first ring body, the second ring body and the third ring body are spaced apart on the outside of the inner sleeve, and the number of the first locking parts, the second locking parts and the third locking parts are the same.

[0012] In the first aspect, the first snap-fit ​​portion is provided with a first protrusion and a second protrusion, the first protrusion having a hinge hole in its middle, the rotating end being located between the first protrusion and the second protrusion, and the rotating end being hingedly connected to the hinge hole; the second snap-fit ​​portion is provided with a third protrusion, the third protrusion having a first through hole in its middle, and the third protrusion being fixedly connected to the first fixed end; the third snap-fit ​​portion is provided with a fourth protrusion, the fourth protrusion having a second through hole in its middle, and the fourth protrusion being fixedly connected to the second fixed end.

[0013] In the first aspect, the sliding component includes: a slide rail, one end of which passes through the first through hole and abuts against the third protrusion via a first slide rail limiting bolt; the other end of which passes through the second through hole and abuts against the fourth protrusion via a second slide rail limiting bolt; and a slider, which is Y-shaped, one side of which is hinged to the sliding end via the connecting portion; the other side of which contacts the slide rail, allowing the slider to slide on the slide rail.

[0014] In the first aspect, the guide assembly includes: a connecting frustum fixed to the end of the inner sleeve; a plurality of guide brackets, each of the guide brackets being fixed at intervals to the connecting frustum; and a plurality of guide wheels, each of the guide wheels being hingedly connected to a corresponding guide bracket via a support rod.

[0015] In the first aspect, the strain gauge further includes: a fixed base, the fixed base being fixed inside the inner sleeve, and the measuring element being fixed on the fixed base.

[0016] In the first aspect, the measuring element includes: deformable spring steel sheets spaced apart along the circumferential direction of the fixed base; strain gauges correspondingly disposed on the deformable spring steel sheets for measuring the deformation data of the deformable spring steel sheets; and a pressure button located within the measuring hole, one end of the pressure button abutting against the middle of the sliding bracket via the pressing part, and the other end of the pressure button contacting the deformable spring steel sheets. The one end of the pressure button moves within the measuring hole via the sliding of the sliding bracket, thereby causing the other end of the pressure button to abut against the deformable spring steel sheets, causing the deformable spring steel sheets to deform. The deformation data is measured by the strain gauges.

[0017] Beneficial effects:

[0018] This invention provides a borehole deformation measuring device, including an inner sleeve, a locking ring assembly, a sliding assembly, a hinged bracket assembly, a traveling wheel, and a guide assembly. By fixing the locking ring assembly, sliding assembly, and guide assembly to the outside of the inner sleeve, the inner sleeve, locking ring assembly, sliding assembly, and guide assembly form an integrated structure, achieving miniaturization and simplification of the overall device structure. Simultaneously, the hinged bracket assembly is fixed to the locking ring assembly and slidably connected to the sliding assembly. The traveling wheel is fixed to the hinged bracket assembly. The borehole wall pressing against the traveling wheel drives the hinged bracket assembly to slide relative to the inner sleeve, and the sliding motion of the hinged bracket assembly further drives the sliding assembly to slide relative to the inner sleeve. The guide assembly also provides support for the integrated structure, assisting the traveling wheel and hinged bracket assembly. The device operates stably during measurement. Furthermore, the inner sleeve has a measurement hole, and a strain gauge is installed inside the inner sleeve. The inner sleeve isolates the strain gauge from the external environment, reducing damage from uncertain environmental factors or hard objects, thus extending its service life and improving the overall measurement stability of the device. Simultaneously, the strain gauge has a measuring element corresponding to the measurement hole. A hinged support assembly abuts against the measuring element, and the hinged support assembly, through telescopic sliding, presses the measuring element to move within the measurement hole, thereby measuring the borehole diameter deformation data in real time. In other words, the borehole diameter deformation measuring device provided by this invention features a simple structure, high stability, and miniaturization, effectively improving the device's geological adaptability and equipment stability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an external view of an aperture deformation measuring device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the upper positioning ring of the positioning ring assembly in this invention;

[0022] Figure 3 This is a schematic diagram of the middle locking ring of the locking ring assembly in this invention;

[0023] Figure 4 This is a schematic diagram of the upper positioning ring of the positioning ring assembly in this invention;

[0024] Figure 5 This is a schematic diagram of the strain gauge in this invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Inner sleeve;

[0027] 21. Upper locking ring; 211. First ring body; 212. First locking part; 22. Middle locking ring; 221. Second ring body; 222. Second locking part; 23. Lower locking ring; 231. Third ring body; 232. Third locking part;

[0028] 3. Sliding assembly; 31. Slide rail; 32. First slide rail limiting bolt; 33. Second slide rail limiting bolt; 34. Slider;

[0029] 4. Hinged bracket assembly; 41. Swing bracket; 42. Sliding bracket;

[0030] 5. Road wheels;

[0031] 6. Guide assembly; 61. Connecting frustum; 62. Guide bracket; 63. Guide wheel;

[0032] 7. Fix the base;

[0033] 8. Measuring element; 81. Deformable spring steel sheet; 82. Press button; 83. Data board; Detailed Implementation

[0034] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this specification are within the scope of protection of this invention.

[0035] Example 1

[0036] Please see Figure 1-5Embodiment 1 of the present invention provides a hole diameter deformation measuring device, including an inner sleeve 1, a locking ring assembly, a sliding assembly 3, a hinged bracket assembly 4, a traveling wheel 5, and a guide assembly 6. A strain gauge is disposed inside the inner sleeve 1, and the strain gauge has a measuring element 8. The inner sleeve 1 has a measuring hole, and the measuring element 8 corresponds to the measuring hole. The locking ring assembly is fixed to the outside of the inner sleeve 1. The sliding assembly 3 is fixed to the outside of the inner sleeve 1. The hinged bracket assembly 4 is fixed to the locking ring assembly and slidably connected to the sliding assembly 3. The traveling wheel 5 is fixed to the hinged bracket assembly 4. The guide assembly 6 is fixed to the outside of the inner sleeve 1. The hinged bracket assembly 4 abuts against the measuring element 8, and the traveling wheel 5 abuts against the hole wall of the hole to be measured. The hole wall presses against the traveling wheel, causing the hinged bracket assembly 4 to slide relative to the inner sleeve 1. Furthermore, the sliding hinged bracket assembly 4 presses against the measuring element 8, causing it to move within the measuring hole to measure the hole diameter deformation data.

[0037] Specifically, this invention provides a hole diameter deformation measuring device, including an inner sleeve 1, a locking ring assembly, a sliding assembly 3, a hinged bracket assembly 4, a traveling wheel 5, and a guide assembly 6. By fixing the locking ring assembly, the sliding assembly 3, and the guide assembly 6 to the outside of the inner sleeve 1, the inner sleeve 1, the locking ring assembly, the sliding assembly 3, and the guide assembly 6 form an integrated structure, achieving miniaturization and simplification of the overall device structure. Simultaneously, the hinged bracket assembly 4 is fixed to the locking ring assembly and slidably connected to the sliding assembly 3. The traveling wheel 5 is fixed to the hinged bracket assembly 4. Thus, the hole wall of the hole to be measured presses against the traveling wheel, causing the hinged bracket assembly 4 to slide relative to the inner sleeve 1. Furthermore, the sliding motion of the hinged bracket assembly 4 causes the sliding assembly 3 to slide relative to the inner sleeve 1. The guide assembly 6 also provides support for the integrated structure, assisting in its movement. The wheel 5 and the hinged bracket assembly 4 operate stably during the measurement process. Furthermore, the inner sleeve 1 has a measurement hole, and a strain gauge is installed inside the inner sleeve. The inner sleeve 1 isolates the strain gauge from the external environment, thereby reducing damage caused by uncertain environmental factors or hard objects, improving the service life of the strain gauge, and achieving the technical effect of improving the overall measurement stability of the device. Simultaneously, the strain gauge has a measuring element 8, which corresponds to the measurement hole. The hinged bracket assembly 4 abuts against the measuring element 8. Through the telescopic sliding of the hinged bracket assembly 4, the measuring element 8 moves within the measurement hole to measure the borehole diameter deformation data in real time. In other words, the borehole diameter deformation measuring device provided by this invention has the characteristics of simple structure, strong stability, and miniaturization, effectively improving the device's geological adaptability and equipment stability.

[0038] In some possible implementations, the hinged bracket assembly 4 includes: a telescopic body having a rotating end, a sliding end, a traveling end, and a pressing part; wherein, the rotating end is fixed to the locking ring assembly; the sliding end is slidably connected to the sliding assembly 3; the traveling end is fixedly connected to the traveling wheel 5; the pressing part presses against the measuring element 8; the traveling end drives the sliding end to telescopically slide relative to the inner sleeve 1 through the telescopic body, and then the pressing part presses against the measuring element 8 to move within the measuring hole during the telescopic sliding.

[0039] Those skilled in the art will understand that the hinged bracket assembly 4 includes a telescopic body, which has a rotating end, a sliding end, a traveling end, and a pressing part. The rotating end is fixed to the locking ring assembly, the sliding end is slidably connected to the sliding assembly 3, the traveling end is fixedly connected to the traveling wheel 5, and the pressing part presses against the measuring element 8. With this configuration, the traveling end can drive the sliding end to slide relative to the inner sleeve 1 through the telescopic body, and then press the measuring element 8 to move within the measuring hole through the pressing part during the telescopic sliding.

[0040] In some possible implementations, the hinged bracket assembly 4 includes a plurality of hinged brackets, each of which includes: a swing bracket 41, one end of which is the rotating end and is hinged to the locking ring assembly, and the other end of which is the traveling end and is hinged to the traveling wheel 5; and a sliding bracket 42, one end of which is hinged to the middle of the swing bracket 41, and the other end of which is the sliding end and is hinged to the traveling wheel 5. The moving end is slidably connected to the sliding assembly 3. The middle part of the sliding bracket 42 is provided with the pressing part, and the pressing part presses against the measuring element 8. The hole wall presses against the traveling wheel 5, which drives the swing bracket 41 to swing towards the inner sleeve 1 with the rotating end as the center. Then, the middle part of the swing bracket 41 drives the sliding bracket 42 to slide towards the inner sleeve 1, so that the middle part of the sliding bracket 42 presses against the measuring element 8 and moves within the measuring hole through the pressing part.

[0041] Those skilled in the art will understand that, in order to improve the flexibility of the hinged bracket assembly, the hinged bracket assembly 4 includes a plurality of hinged brackets, each of which is spaced apart and fixed to the locking ring assembly. Each hinged bracket includes a swing bracket 41 and a sliding bracket 42. The swing bracket 41 is hinged to the locking ring assembly via a rotating end and to the travel wheel 5 via a traveling end. The end of the sliding bracket 42 is hinged to the middle of the swing bracket 41. The sliding bracket 42 is slidably connected to the sliding assembly 3 via a sliding end, and the middle of the sliding bracket 42 presses against the measuring element via a pressing part. In terms of components, this embodiment uses a hinged connection to adjust the angle between the swing bracket 41, the sliding bracket 42, and the locking ring assembly according to actual conditions, thereby adjusting the relative displacement between the hinged bracket and the inner sleeve 1. In addition, this embodiment can also drive the swing bracket 41 to move towards the inner sleeve 1 with the rotating end as the center by pressing against the travel wheel 5 through the hole wall. Then, the middle part of the swing bracket 41 drives the sliding bracket 42 to slide towards the inner sleeve 1, so that the middle part of the sliding bracket 42 presses against the measuring element 8 through the pressing part and moves within the measuring hole to measure the hole diameter deformation data of the hole to be measured.

[0042] In some possible implementations, the sliding assembly 3 includes: a sliding body and a sliding component. The sliding body includes a first fixed end, a second fixed end, and a connecting portion. The first fixed end and the second fixed end are both fixed to the locking ring assembly. The sliding component is located between the first fixed end and the second fixed end and is hinged to the sliding end through the connecting portion. The connecting portion drives the sliding component to slide relative to the surface of the inner sleeve 1 between the first fixed end and the second fixed end through the sliding bracket 42.

[0043] This is because the sliding assembly 3 includes a sliding body and a sliding component. The sliding body includes a first fixed end, a second fixed end, and a connecting part. The first fixed end and the second fixed end are both fixed to the locking ring assembly (which can be understood as forming a sliding area through the first fixed end and the second fixed end). The sliding component is located in the sliding area and is hinged to the sliding end through the connecting part. This arrangement allows the connecting part to drive the sliding component to slide relative to the surface of the inner sleeve 1 in the above-mentioned sliding area through the sliding bracket 42. In order to prevent the sliding component from detaching, this embodiment uses the first fixed end and the second fixed end as the two ends of the sliding area to limit the sliding component. The sliding area formed by the first fixed end and the second fixed end can provide a sufficient distance range for the displacement of the hinge bracket assembly 4 due to the adjustment of the angle in actual situations, which facilitates the normal operation of the aperture deformation measuring device.

[0044] In some possible implementations, the locking ring assembly includes an upper locking ring 21, a middle locking ring 22, and a lower locking ring 23. The upper locking ring 21 includes a first ring body 211 and a plurality of first locking parts 212. The first ring body 211 is fixed to the outside of the inner sleeve 1, and the plurality of first locking parts 212 are evenly spaced along the circumferential direction of the first ring body 211. Each first locking part 212 is hinged to the rotating end of a corresponding swing bracket 41. The middle locking ring 22 includes a second ring body 221 and a plurality of second locking parts 222. The second ring body 221 is fixed to the outside of the inner sleeve 1, and the plurality of second locking parts 222 are evenly spaced along the circumferential direction of the second ring body 221. The second locking part 222 is uniformly spaced and fixedly connected to the first fixed end of the corresponding sliding body; the lower locking ring 23 includes a third ring body 231 and a plurality of third locking parts 232. The third ring body 231 is fixed to the outside of the inner sleeve 1, and the plurality of third locking parts 232 are uniformly spaced along the circumferential direction of the third ring body. Each third locking part 232 is fixedly connected to the second fixed end of the corresponding sliding body; wherein, the first ring body 211, the second ring body 221 and the third ring body 231 are spaced apart on the outside of the inner sleeve 1, and the number of the first locking parts 212, the second locking parts 222 and the third locking parts 232 is the same.

[0045] Those skilled in the art will understand that the locking ring assembly includes an upper locking ring 21, a middle locking ring 22, and a lower locking ring 23. The upper locking ring 21 includes a first ring body 211 and a plurality of first locking parts 212. The first ring body 211 is fixed to the outside of the inner sleeve 1. The plurality of first locking parts 212 are evenly spaced along the circumferential direction of the first ring body 211. Each first locking part 212 is hinged to the rotating end of a corresponding swing bracket 41, so that the upper locking ring 21 passes through the first... One ring 211 can be fixedly connected to the inner sleeve 1 to form a whole, and then the swing bracket 41 is fixed through the first snap-fit ​​part; similarly, in order to make the upper snap-fit ​​ring 21, the middle snap-fit ​​ring 22, the lower snap-fit ​​ring 23 and the inner sleeve 1 fixedly connected to form a whole structure, the middle snap-fit ​​ring 22 and the lower snap-fit ​​ring 23 can be set in the same way as the upper snap-fit ​​ring 21. The ring structure of the middle snap-fit ​​ring 22 and the lower snap-fit ​​ring 23 is similar to the ring structure of the upper snap-fit ​​ring 21, the difference being that The connection method of the snap-fit ​​parts is such that each second snap-fit ​​part 222 is fixedly connected to the first fixed end of a corresponding sliding body, and each third snap-fit ​​part 232 is fixedly connected to the second fixed end of a corresponding sliding body. This makes the middle snap-fit ​​ring 22 fixedly connected to the inner sleeve 1 as a whole through the second ring body 211 and the lower snap-fit ​​ring 23 through the third ring body, thereby fixing the sliding body through the second snap-fit ​​parts 222 and the third snap-fit ​​parts 232. Furthermore, the first ring body 211, the second ring body 221 and the third ring body 231 are spaced apart on the outside of the inner sleeve 1. With this arrangement, the movement distance of the travel wheel in the hole to be measured can be calculated by the spacing distance of the first ring body 211, the second ring body 221 and the third ring body 231 on the outside of the inner sleeve 1 and the length of the swing bracket 41 and the sliding bracket 42. In addition, in order to facilitate the assembly of the hole diameter deformation measuring device and improve the measurement accuracy, the number of the first snap-fit ​​parts 212, the second snap-fit ​​parts 222 and the third snap-fit ​​parts 232 is the same.

[0046] In some possible implementations, the first latching portion 212 is provided with a first protrusion and a second protrusion, the first protrusion having a hinge hole in its center, the rotating end being located between the first protrusion and the second protrusion, and the rotating end being hingedly connected to the groove; the second latching portion 222 is provided with a third protrusion, the third protrusion having a first through hole in its center, and the third protrusion being fixedly connected to the first fixed end; the third latching portion 232 is provided with a fourth protrusion, the fourth protrusion having a second through hole in its center, and the fourth protrusion being fixedly connected to the second fixed end.

[0047] In some possible implementations, the sliding component 3 includes: a slide rail 31, one end of which passes through the first through hole and abuts against the third protrusion via a first slide rail limiting bolt 32; the other end of which passes through the second through hole and abuts against the fourth protrusion via a second slide rail limiting bolt 33; and a slider 34, which is Y-shaped, one side of which is hinged to the sliding end via the connecting portion; the other side of which contacts the slide rail 31, allowing the slider 34 to slide on the slide rail 31.

[0048] To facilitate the adjustment of the hinged bracket assembly and improve the stability of the aperture deformation measuring device, the sliding component in this embodiment includes a slide rail 31, a first slide rail limiting bolt 32, a second slide rail limiting bolt 33, and a slider 34. One end of the slide rail 31 passes through the first through hole and abuts against the third protrusion via the first slide rail limiting bolt 32. The other end of the slide rail 31 passes through the second through hole and abuts against the fourth protrusion via the second slide rail limiting bolt 33. The slider 34 is Y-shaped, and one side of the slider 34 is connected to the sliding bracket 42 via a connecting part. The slider 34 is hinged, with the other side of the slider 34 contacting the slide rail 31, allowing the slider 34 to slide on the slide rail 31. This arrangement ensures that the positional relationship between the slide rail 31, the middle locking ring 22, and the lower locking ring 23 is relatively fixed, and the distance from the inner sleeve 1 is also relatively fixed. At the same time, the slider 34 is driven to slide on the slide rail 31 by the sliding bracket 42, and the sliding distance of the slider 34 is limited by the first slide rail limiting bolt 32 and the second slide rail limiting bolt 33 to prevent the slider 34 from detaching from the slide rail 31 and affecting the measurement results.

[0049] In some possible implementations, the guide assembly 6 includes a connecting frustum 61, a plurality of guide brackets 62 and a plurality of guide wheels 63. The connecting frustum 61 is fixed to the end of the inner sleeve 1. Each of the guide brackets 62 is fixed at intervals on the connecting frustum 61. Each of the guide wheels 63 is hinged to a corresponding guide bracket 62 via a support rod.

[0050] To improve the stability of the aperture deformation measuring device, a guide assembly 6 is provided to support the hinged bracket assembly 4 and assist the hinged bracket assembly 4 and strain gauge in measuring the aperture deformation of the hole to be measured. The guide assembly 6 includes a connecting frustum 61, several guide brackets 62, and several guide wheels 63. The connecting frustum 61 is fixed to the outside of the inner sleeve 1. Each guide bracket 62 is fixed at intervals on the connecting frustum 61. Each guide wheel 63 is hinged to a corresponding guide bracket 62 via a support rod. The guide wheels 63 abut against the hole wall of the hole to be measured, allowing the traveling wheel 5 to move stably forward within the hole. This also reduces frictional wear on the traveling wheel 5 during its movement, extending its service life and thus extending the service life of the aperture deformation measuring device. Preferably, several circular holes are formed at the bottom of the connecting frustum 61, which is then fixedly connected to the tail end of the inner sleeve by bolts.

[0051] In some possible implementations, the strain gauge further includes a fixed base 7, which is fixed inside the inner sleeve 1, and the measuring element 8 is fixed on the fixed base 7.

[0052] Those skilled in the art will understand that a fixed base 7 is fixedly installed inside the inner sleeve 1 to facilitate the fixing of a measuring element 8 inside the inner sleeve 1 for real-time measurement of the hole diameter deformation data to be measured.

[0053] In some possible implementations, the measuring element 8 includes deformable spring steel sheets 81 and a pressure button 82. The deformable spring steel sheets 81 are spaced apart along the circumferential direction of the fixed base 7. Strain gauges are correspondingly provided on the deformable spring steel sheets 81, and the strain gauges are used to measure the deformation data of the deformable spring steel sheets 81. The pressure button 82 is located in the measuring hole. One end of the pressure button 82 abuts against the middle of the sliding bracket 42 through the pressing part, and the other end of the pressure button 82 contacts the deformable spring steel sheet 81. The one end of the pressure button 82 moves within the measuring hole through the sliding of the sliding bracket 42, thereby causing the other end of the pressure button 82 to abut against the deformable spring steel sheet 81, causing the deformable spring steel sheet 81 to deform. The deformation data is measured by the strain gauge.

[0054] To improve measurement accuracy, in this embodiment, deformable spring steel sheets 81 are spaced apart along the circumferential direction of the fixed base 7, and each deformable spring steel sheet 81 is equipped with a strain gauge to measure the deformation data of the deformable spring steel sheet 81. A pressure button 82 is located within the measurement hole. One end of the pressure button 82 abuts against the middle of the sliding bracket 42 via a pressing part, and the other end of the pressure button 82 contacts the deformable spring steel sheet 81. The sliding of the sliding bracket 42 drives the movement of the pressing part, thereby moving the pressure button 82 within the measurement hole. The other end of the pressure button 82 abuts against the deformable spring steel sheet 81, causing the deformable spring steel sheet 81 to deform. The deformation data can be measured by strain gauges and displayed on the data board 83, or the deformation data can be transmitted to the PC via a wireless terminal. Then, the travel distance of the traveling wheel in the test hole is calculated by combining the spacing distance of the first ring body 211, the second ring body 221 and the third ring body 231 outside the inner sleeve 1 and the length of the swing bracket 41 and the sliding bracket 42, and then the hole diameter deformation data of the test hole is calculated.

[0055] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0056] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A device for measuring aperture deformation, characterized in that, include: An inner sleeve is provided with a strain gauge inside the inner sleeve. The strain gauge has a measuring element, and the inner sleeve has a measuring hole. The measuring element corresponds to the measuring hole. A positioning ring assembly, wherein the positioning ring assembly is fixed to the outside of the inner sleeve; A sliding assembly, the sliding assembly being fixed to the outside of the inner sleeve; A hinged bracket assembly, which is fixed to the locking ring assembly and slidably connected to the sliding assembly; The traveling wheel is fixed to the hinged bracket assembly; A guide assembly, which is fixed to the outside of the inner sleeve; The hinged bracket assembly abuts against the measuring element, and the traveling wheel abuts against the wall of the hole to be measured. The traveling wheel is pressed against the hole wall, which drives the hinged bracket assembly to slide relative to the inner sleeve. The hinged bracket assembly, during its sliding motion, presses against the measuring element to move within the measuring hole position, thereby measuring the hole diameter deformation data of the hole to be measured.

2. The aperture deformation measuring device as described in claim 1, characterized in that, The hinged bracket assembly includes: A telescopic body has a rotating end, a sliding end, a traveling end, and a pressing part; wherein, the rotating end is fixed to the locking ring assembly; the sliding end is slidably connected to the sliding assembly; the traveling end is fixedly connected to the traveling wheel; the pressing part presses against the measuring element; the traveling end drives the sliding end to slide relative to the inner sleeve through the telescopic body, and then the pressing part presses against the measuring element to move within the measuring hole during the telescopic sliding.

3. The aperture deformation measuring device as described in claim 2, characterized in that, The hinge bracket assembly further includes a plurality of hinge brackets, each of the hinge brackets comprising: A swing bracket, one end of which is the rotating end and is hinged to the locking ring assembly, and the other end of which is the traveling end and is hinged to the traveling wheel. A sliding bracket, one end of which is hinged to the middle of the swing bracket, and the other end of which is the sliding end, and is slidably connected to the sliding assembly through the sliding end. The middle of the sliding bracket is provided with the pressing part, and the pressing part presses against the measuring element. The hole wall presses against the traveling wheel, causing the swing bracket to swing towards the inner sleeve with the rotating end as the center. Then, the middle part of the swing bracket in the swinging motion drives the sliding bracket to slide towards the inner sleeve, so that the middle part of the sliding bracket presses against the measuring element and moves within the measuring hole through the pressing part.

4. The aperture deformation measuring device as described in claim 3, characterized in that, The sliding component includes: A sliding body and a sliding component are provided. The sliding body includes a first fixed end, a second fixed end, and a connecting part. The first fixed end and the second fixed end are both fixed to the locking ring assembly. The sliding component is located between the first fixed end and the second fixed end and is hinged to the sliding end through the connecting part. The connecting part drives the sliding component to slide between the first fixed end and the second fixed end relative to the surface of the inner sleeve through the sliding bracket.

5. The aperture deformation measuring device as described in claim 4, characterized in that, The positioning ring assembly includes: The upper locking ring includes a first ring body and a plurality of first locking parts. The first ring body is fixed to the outside of the inner sleeve. The plurality of first locking parts are evenly spaced along the circumferential direction of the first ring body. Each first locking part is hinged to the rotating end of a corresponding swing bracket. The middle locking ring includes a second ring body and a plurality of second locking parts. The second ring body is fixed to the outside of the inner sleeve. The plurality of second locking parts are evenly spaced along the circumferential direction of the second ring body. Each second locking part is fixedly connected to the first fixed end of a corresponding sliding body. The lower locking ring includes a third ring body and several third locking parts. The third ring body is fixed to the outside of the inner sleeve. The several third locking parts are evenly spaced along the circumferential direction of the third ring body. Each third locking part is fixedly connected to the second fixed end of a corresponding sliding body. The first ring, the second ring, and the third ring are spaced apart outside the inner sleeve, and the number of the first snap-fit ​​part, the second snap-fit ​​part, and the third snap-fit ​​part is the same.

6. The aperture deformation measuring device as described in claim 5, characterized in that: The first snap-fit ​​portion is provided with a first protrusion and a second protrusion. A hinge hole is provided in the middle of the first protrusion. The rotating end is located between the first protrusion and the second protrusion, and the rotating end is hinged to the hinge hole. The second snap-fit ​​portion is provided with a third protrusion, and a first through hole is provided in the middle of the third protrusion. The third protrusion is fixedly connected to the first fixed end. The third snap-fit ​​portion is provided with a fourth protrusion, and a second through hole is provided in the middle of the fourth protrusion. The fourth protrusion is fixedly connected to the second fixed end.

7. The aperture deformation measuring device as described in claim 6, characterized in that, The sliding component includes: A slide rail, one end of which passes through the first through hole and abuts against the third protrusion via a first slide rail limiting bolt; the other end of which passes through the second through hole and abuts against the fourth protrusion via a second slide rail limiting bolt; The slider is Y-shaped, with one side of the slider hinged to the sliding end via the connecting part; the other side of the slider contacts the slide rail, allowing the slider to slide on the slide rail.

8. The aperture deformation measuring device as described in claim 7, characterized in that, The guiding component includes: A connecting frustum is fixed to the end of the inner sleeve; Several guide brackets, each of which is fixed at intervals to the connecting circular platform; A plurality of guide wheels, each of which is hinged to a corresponding guide bracket via a support rod.

9. The aperture deformation measuring device as described in claim 8, characterized in that, The strain gauge also includes: A fixed base is fixed inside the inner sleeve, and the measuring element is fixed on the fixed base.

10. The aperture deformation measuring device as described in claim 9, characterized in that, The measuring element includes: Deformable spring steel sheets are spaced apart along the circumferential direction of the fixed base; strain gauges are correspondingly provided on the deformable spring steel sheets, and the strain gauges are used to measure the deformation data of the deformable spring steel sheets; A pressure button is located within the measuring hole. One end of the pressure button abuts against the middle of the sliding bracket via the pressing part, and the other end of the pressure button contacts the deformable spring steel sheet. The one end of the pressure button moves within the measuring hole via the sliding bracket, thereby causing the other end of the pressure button to abut against the deformable spring steel sheet, causing the deformable spring steel sheet to deform. The deformation data is measured by the strain gauge.

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