Dynamic component deformation monitoring device
By combining a rope displacement sensor and a traction rope, the problems of accuracy and cost of existing component deformation monitoring devices are solved, achieving high-precision, low-cost component deformation monitoring, adapting to complex environments, and providing detailed deformation data.
Patent Information
- Application Number
- CN202423187426.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing component deformation monitoring devices suffer from either high accuracy but high cost or low cost but low accuracy. Furthermore, existing methods are susceptible to environmental factors, resulting in inaccurate measurements.
The system employs a combination structure of a pull-rope displacement sensor, a traction rope, and a measuring base. It achieves dynamic monitoring of component deformation through a limiting slide and a steering device, and calculates the deformation using the Pythagorean theorem, thus avoiding the influence of environmental factors.
It achieves high-precision, low-cost component deformation monitoring, maintains high accuracy in complex environments, adapts to different working conditions, and provides detailed deformation data support.
Smart Images
Figure CN223636845U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the engineering structure monitoring technical field, especially relate to a component deformation dynamic monitoring device. BACKGROUND
[0002] In many fields such as building engineering and mechanical engineering, accurately monitoring the deformation of components is of great significance for ensuring the safety of structures, evaluating the performance of structures and guiding engineering maintenance.
[0003] The commonly used component deformation monitoring methods at present mainly include the following:
[0004] Strain gauge measurement method: strain gauges are pasted on the surface of components, and the deformation is calculated by measuring the strain. However, strain gauges are easily affected by changes in environmental temperature and humidity, resulting in measurement errors. Moreover, the measurement accuracy is limited, and the capture of small deformations is not accurate enough. In addition, the pasting process of strain gauges requires high quality, and the pasting quality directly affects the measurement results. In the long-term monitoring process, the pasting glue may age and fail, affecting the measurement reliability.
[0005] Optical measurement method: such as laser range finder, total station, etc. Although this method can realize non-contact measurement and has relatively high accuracy, the device is expensive, and the measurement environment is harsh, requiring good visibility and stable measurement environment. In the complex environment of the construction site, dust, fog and other factors may interfere with the propagation of laser, affecting the measurement accuracy. Moreover, the operation and maintenance of optical equipment require professional technical personnel, and the operation is complex and the cost is high.
[0006] Traditional contact type displacement sensor measurement: it needs to be in close contact with the component and fixed. In the deformation process of the component, the installation structure of the sensor itself may constrain the deformation of the component, change the stress state of the component, and thus affect the authenticity of the measurement. At the same time, in the long-term use process, the contact part may appear wear, corrosion and other problems, leading to increased measurement error, which requires frequent calibration and maintenance, increasing the maintenance cost and workload.
[0007] Therefore, a component deformation dynamic monitoring device with high precision, high sensitivity and low cost is urgently needed. UTILITY MODEL CONTENT
[0008] The utility model provides a component deformation dynamic monitoring device to solve the technical problem of high precision and high cost or low cost and low precision of the component deformation monitoring device in the prior art.
[0009] The utility model discloses a component deformation dynamic monitoring device, including pull rope displacement sensor, traction rope and measurement seat, the measurement seat is fixed on the measured point of component, be equipped with the limit sliding slot on the measurement seat, the pull rope displacement sensor is fixed in one end of component, one end of traction rope is connected with the pull rope of pull rope displacement sensor, the other end of traction rope is fixed in the other end of component after passing the limit sliding slot.
[0010] In order to better realize the utility model, further optimization is made in the above structure, the limit sliding slot is arc slot, and the limit sliding slot is arranged on the top of the measurement seat.
[0011] In order to better realize the utility model, further optimization is made in the above structure, and the two end slots of the limit sliding slot are provided with rounded surfaces.
[0012] In order to better realize the utility model, further optimization is made in the above structure, and the limit sliding slot is an arc-shaped hole.
[0013] In order to better realize the utility model, further optimization is made in the above structure, and the limit sliding slot is an arc-shaped hole.
[0014] In order to better realize the utility model, further optimization is made in the above structure, and the limit sliding slot is an arc-shaped hole.
[0015] In order to better realize the utility model, further optimization is made in the above structure, and the limit sliding slot is an arc-shaped hole.
[0016] In order to better realize the utility model, further optimization is made in the above structure, and the limit sliding slot is an arc-shaped hole.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] The component deformation dynamic monitoring device provided by the utility model comprises a pull rope displacement sensor, a traction rope and a measuring seat, the measuring seat is fixed on a to-be-measured point of a component, a limiting sliding groove is arranged on the measuring seat, the pull rope displacement sensor is fixed on one end of the component, one end of the traction rope is connected with a pull rope of the pull rope displacement sensor, the other end of the traction rope is fixed on the other end of the component after passing through the limiting sliding groove, when the component is elastically deformed due to external force, the measuring seat drives the traction rope to vertically displace together with the component, the traction rope draws out the pull rope in the pull rope displacement sensor and deforms together with the component, the pull rope displacement sensor monitors and records the length of the drawn-out pull rope, the vertical deformation amount of the component at the to-be-measured point can be obtained based on the Pythagorean theorem and geometric relationship, the measurement precision is high, the structure is simple and the cost is low, and the practicability of the utility model is stronger. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0020] Figure 1 It is the front view of the component deformation dynamic monitoring device in the utility model;
[0021] Figure 2 It is the structural schematic view of the measuring seat in the utility model;
[0022] Figure 3 It is the plan view of the component deformation dynamic monitoring device with a steering device in the utility model;
[0023] Figure 4 It is the structural schematic view of the steering device in the utility model.
[0024] In the drawing:
[0025] 1-pull rope displacement sensor;2-traction rope;3-measuring seat;4-limiting sliding groove;5-steering device;6-vertical shaft;7-pulley;8-component. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0027] In the description of the utility model, it needs to be explained that, unless otherwise stated, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0028] In the description of the utility model, it also needs to be explained that, unless otherwise stated and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; It can be mechanical connection, or electrical connection; It can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0029] Embodiment 1:
[0030] In this embodiment, a component deformation dynamic monitoring device, as shown in Figure 1 and Figure 2 , comprising a pull rope displacement sensor 1, a traction rope 2 and a measuring seat 3, specifically, the above-mentioned measuring seat 3 is fixed on the measured point of the component 8 by welding or bolt, the above-mentioned measuring seat 3 is provided with a limiting sliding groove 4, the above-mentioned pull rope displacement sensor 1 is fixed at one end of the above-mentioned component 8, one end of the above-mentioned traction rope 2 is connected with the pull rope of the above-mentioned pull rope displacement sensor 1, the above-mentioned traction rope 2 is preferably a steel wire rope, the other end of the above-mentioned traction rope 2 is fixed at the other end of the above-mentioned component 8 after passing through the above-mentioned limiting sliding groove 4, the above-mentioned pull rope displacement sensor 1 is provided with a return coil spring, the above-mentioned traction rope 2 is straightened under the action of the return coil spring, and forms an obtuse angle triangle structure under the support of the above-mentioned measuring seat 3.
[0031] With the structure, when the above-mentioned component 8 is elastically deformed due to external force, the above-mentioned measuring seat 3 drives the above-mentioned traction rope 2 to vertically displace with the above-mentioned component 8, so that the above-mentioned traction rope 2 draws out the pull rope in the above-mentioned pull rope displacement sensor 1 and deforms with the above-mentioned component 8, the above-mentioned pull rope displacement sensor 1 monitors and records the length of the drawn pull rope, and the vertical deformation amount of the above-mentioned component 8 at the measured point can be obtained based on the Pythagorean theorem and geometric relationship, the measurement precision is high, the structure is simple and the cost is low, so that the utility model has stronger practicability.
[0032] In this embodiment, according to the theoretical formula:
[0033]
[0034] Definition: the total amount of the extension of the pull rope measured by the pull rope displacement sensor 1 is a;
[0035] The total length of the component 8 is L;
[0036] The position of the measurement point is λ;
[0037] The fixed point height of the traction rope 2 of the measurement seat 3 is h 0；
[0038] The change value of the height of the measurement point is Δ h;
[0039] Wherein, the value range of λ is between 0 and 1, such as λ = 1 / 2, that is, the horizontal length of the measurement point from the pull rope displacement sensor 1 is half of the total length of the component 8, and the vertical deformation amount of the component 8 at the measurement point can be obtained by substituting the measured vertical into the formula.
[0040] The fixed point height h0 of the traction rope 2 of the measurement seat 3 is positively correlated with the sensitivity of the device. In a scene with large environmental interference, h0 is appropriately reduced, thereby reducing the sensitivity, which can reduce the measurement fluctuation caused by small interference, such as high-frequency vibration, small thermal expansion and contraction caused by local temperature gradient, and improve the stability of the system and the reliability of the measurement data. In the case where the structural deformation precision requirement is extremely high and the interference is relatively small, increasing h0 can accurately obtain the deformation information of the component 8 on the basis of excluding interference, and ensure that the monitoring system can operate with the best performance under different working conditions, thereby guaranteeing the robustness and adaptability of the monitoring system.
[0041] In the embodiment, the limiting sliding groove 4 is an arc-shaped groove, the limiting sliding groove 4 is arranged at the top of the measurement seat 3, and the two end slots of the limiting sliding groove 4 are provided with rounded surfaces, so that the traction rope 2 can relatively slide in the limiting sliding groove 4, thereby reducing the friction coefficient and the sliding resistance of the traction rope 2 in the deformation process, and ensuring the accuracy of the measurement. The limiting sliding groove 4 can also be provided as an arc-shaped hole.
[0042] As a specific embodiment of the present embodiment, as Figure 3 and Figure 4As shown, the device further comprises a plurality of turning devices 5, which guide the traction rope 2 to turn multiple times, so as to monitor the deformation of the member 8 at different positions simultaneously. Specifically, the plurality of turning devices 5 are arranged on the member 8, and one end of the traction rope 2 is sequentially wound around all the turning devices 5 and then fixed to the other end of the member 8, so that the plurality of turning devices 5 divide the traction rope 2 into a plurality of detection sections, each of which is provided with a measuring seat 3, so as to collect the total elongation of the traction rope at all monitoring points and accurately measure the cumulative deformation of the member 8, and more comprehensively and carefully master the deformation characteristics of the member 8 under different working conditions, thereby providing more detailed data support for the safety evaluation of engineering structures.
[0043] In the embodiment, as shown in the figure, Figure 4 The turning device 5 comprises a vertical shaft 6 and a rotating wheel 7. The vertical shaft 6 is welded and fixed on the member 8, and the rotating wheel 7 is horizontally rotatably sleeved on the vertical shaft 6. The rotatable rotating wheel 7 enables the traction rope 2 to smoothly slide when deformed, thereby ensuring the accuracy of measurement.
[0044] As an optimization, the outer wall of the rotating wheel 7 is provided with an annular groove matched with the traction rope 2. The straightened traction rope 2 can be stably matched in the annular groove, thereby avoiding the traction rope 2 from falling off the rotating wheel 7.
[0045] In the embodiment, the rotating shaft is provided with a chassis, and the top of the chassis is provided with a face bearing. The face bearing reduces the contact area and friction coefficient between the rotating wheel 7, thereby avoiding the traction rope 2 from being measured inaccurately due to the jamming of the rotating wheel 7 when deformed.
[0046] The utility model discloses a high-precision, high-sensitivity pull rope displacement sensor 1, compared with strain gauge measurement method, is not influenced by environmental temperature, humidity and other factors, can directly accurately measure the pull rope extraction amount, and then through the accurate geometric relation calculation component 8 deformation, avoided the error accumulation and precision decline problem of strain gauge because of environmental factors, compared with optical measurement method, is not influenced by construction site dust, fog and other environmental interference, still can keep high-precision measurement under complex environment, can accurately measure to millimeter even smaller deformation of quantity, provides more reliable data support for structure safety evaluation, can also set up multiple component deformation dynamic monitoring devices at different positions of the above-mentioned component 8 simultaneously, realizes the vertical deformation of the component 8 on any position section monitoring, or sets up multiple steering devices 5 and measuring seat 3 on the traction rope 2 of a component deformation dynamic monitoring device, realizes the overall cumulative deformation measurement of multiple detection points of component 8, can comprehensively, carefully grasp the deformation distribution of component 8 whole, has remarkable advantage to the deformation monitoring of complex stress component 8 and large structure, is applicable to concrete component 8, steel component 8, beam component 8, column component 8, board spare and different material and different type component 8, whether it is various load-bearing components 8 in building structure, or structure parts in mechanical engineering, can effectively carry out deformation monitoring, has more extensive application prospect.
[0047] The above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of the change or replacement within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited to the protection scope of the claims.
Claims
1. A device for dynamic monitoring of deformation of a structure, characterized by: Including pull rope displacement sensor (1), traction rope (2) and measuring seat (3), the measuring seat (3) is fixed on the point to be measured of component (8), the measuring seat (3) is equipped with limit sliding slot (4), the pull rope displacement sensor (1) is fixed at one end of component (8), one end of the traction rope (2) is connected with the pull rope of the pull rope displacement sensor (1), the other end of the traction rope (2) is fixed at the other end of the component (8) after passing through the limit sliding slot (4).
2. The device according to claim 1, wherein: The limit sliding slot (4) is an arc-shaped slot, and the limit sliding slot (4) is arranged on the top of the measuring seat (3).
3. The device of claim 2, wherein: The two end slots of the limit sliding slot (4) are provided with rounded surfaces.
4. The device of claim 1, wherein: The limit sliding slot (4) is an arc-shaped hole.
5. The device of claim 1, wherein: Further comprising steering device (5), the number of the steering device (5) is multiple, multiple steering devices (5) are dispersedly arranged on the component (8), one end of the traction rope (2) is fixed at the other end of the component (8) after passing through all the steering devices (5) in turn, multiple steering devices (5) separate the traction rope (2) into multiple detection sections, and each detection section is provided with one measuring seat (3).
6. The device of claim 5, wherein: The steering device (5) comprises a vertical shaft (6) and a rotating wheel (7), the vertical shaft (6) is fixed on the component (8), and the rotating wheel (7) is rotatably sleeved on the vertical shaft (6).
7. The device of claim 6, wherein: The outer wall of the rotating wheel (7) is provided with an annular groove matched with the traction rope (2).
8. The device of claim 7, wherein: The bottom of the vertical shaft (6) is provided with a bottom plate, and the top of the bottom plate is provided with an end face bearing.