Bridge precast beam end template verticality and deformation monitor

Abstract

The utility model discloses a verticality and deformation monitor for a bridge precast beam end template, an upper ruler body and a lower ruler body are hinged to form a main body structure which can be unfolded and spliced, the upper ruler body is provided with a first notch, and the lower ruler body is provided with a second notch. The fixing assembly comprises a first fixing piece and a second fixing piece which are arranged on the upper ruler body and the lower ruler body respectively, the first sensor and the communication module are integrated in the first notch, the second sensor, the power module and the control unit are integrated in the second notch, and the control unit is electrically connected with all the modules and the sensors. In the unfolded state, the upper ruler body and the lower ruler body are attached to the outer surface of the formwork, the fixing piece faces the formwork, the notch faces outwards, and the deflection is calculated by measuring the inclination angle change difference value of the formwork through the double sensors. In a splicing state, the upper and lower ruler bodies are closed into a whole, and the fixing piece and the notch are overturned inside and outside, thereby being convenient to carry. The device adapts to template monitoring and storage requirements through a double-state structure, and realizes verticality dynamic monitoring, deformation synchronous monitoring and real-time data transmission.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, and in particular to a monitoring instrument for the verticality and deformation of precast bridge beam end formwork. Background Technology

[0002] Currently, in the construction of precast bridge beam end formwork, verticality and deformation monitoring largely rely on manual measurement or fixed testing equipment, which suffers from poor real-time performance and insufficient adaptability. Traditional methods struggle to continuously capture dynamic deformation data of the formwork during concrete pouring, especially when the formwork experiences localized deflection due to lateral pressure. A single inclination angle measurement cannot accurately reflect the overall deformation trend of the end face, resulting in delayed and inaccurate monitoring results. Existing testing devices, due to their fixed structure and complex installation, are difficult to adapt to formwork surfaces of different sizes, and cannot simultaneously acquire inclination angle changes at multiple points, thus limiting the accuracy of deflection calculations and the timeliness of construction quality control. Therefore, there is an urgent need for a device that can adapt to the formwork shape and achieve synchronous monitoring of dynamic deformation. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to propose a bridge precast beam end template verticality and deformation monitoring instrument to solve the problem that the existing technology cannot monitor the template verticality and deformation in real time.

[0004] To achieve the aforementioned technical objectives, the technical solution adopted in this application is as follows: a bridge precast beam end formwork verticality and deformation monitoring instrument, comprising an upper ruler body, a lower ruler body, a fixing component, a first sensor, a second sensor, a communication module, a power module, and a control unit. The upper ruler body is provided with a first slot; the lower ruler body is hinged to the upper ruler body and is provided with a second slot; the fixing component includes a first fixing member and a second fixing member, the first fixing member being disposed on the upper ruler body and the second fixing member being disposed on the lower ruler body; the first sensor is disposed in the first slot; the second sensor is disposed in the second slot; the communication module is disposed in the first slot; the power module is disposed in the second slot; the control unit is disposed in the second slot, and the control unit is electrically connected to the power module, the communication module, the second sensor, and the first sensor.

[0005] The monitoring device can be placed in both an unfolded and a assembled state. When the monitoring device is in the unfolded state, the upper and lower rulers unfold and fit against the outer surface of the precast beam end template, with the first and second fixing members facing the precast beam end template and the first and second slots facing away from the precast beam end template. When the monitoring device is in the assembled state, the upper and lower rulers are assembled into a whole, with the first and second fixing members facing outward and the first and second slots fitting inward.

[0006] In some embodiments, the fixing component further includes a first cover plate and a second cover plate, the first cover plate covering the top of the first slot; the second cover plate covering the top of the second slot.

[0007] In some embodiments, the edge of the first slot is provided with a first annular stepped surface, and the first cover plate is adapted to the first annular stepped surface; the edge of the second slot is provided with a second annular stepped surface, and the second cover plate is adapted to the second annular stepped surface.

[0008] In some embodiments, both the first sensor and the second sensor are acceleration tilt sensors.

[0009] In some embodiments, the first fixing member and the second fixing member are magnets.

[0010] In some embodiments, the monitor further includes a pin, through which the upper and lower scale bodies are hinged.

[0011] In some embodiments, the upper ruler body has a first inclined surface on the side that is hinged to the lower ruler body, and the lower ruler body has a second inclined surface on the side that is hinged to the upper ruler body.

[0012] In some embodiments, there are two first fasteners, which are respectively disposed near both ends of the upper scale body; and there are two second fasteners, which are respectively disposed near both ends of the lower scale body.

[0013] Compared with the prior art, the present invention, employing the above technical solution, has the following advantages: The above technical solution provides a bridge precast beam end template verticality and deformation monitoring instrument. It consists of an upper and lower ruler body connected by hinges, forming a main structure that can be unfolded and assembled. The upper ruler body has a first slot, and the lower ruler body has a second slot. The fixing assembly includes a first fixing member and a second fixing member respectively disposed on the upper and lower ruler bodies. A first sensor and communication module are integrated in the first slot, while a second sensor, power module, and control unit are integrated in the second slot. The control unit is electrically connected to each module and sensor. In the unfolded state, the upper and lower ruler bodies are attached to the outer surface of the template, with the fixing members facing the template and the slots facing outwards. The difference in template tilt angle is measured by dual sensors to calculate deflection. In the assembled state, the upper and lower ruler bodies are closed as a whole, and the fixing members and slots are flipped inside and out for easy carrying. This device adapts to template monitoring and storage needs through its dual-state structure, achieving dynamic verticality monitoring, synchronous deformation monitoring, and real-time data transmission. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of the monitoring instrument described in the specific implementation method;

[0016] Figure 2 This is a schematic diagram showing the electrical module relationships of the monitoring instrument described in the specific implementation method;

[0017] Figure 3 This is a schematic diagram illustrating the usage scenario of the monitoring instrument described in the specific implementation method.

[0018] The attached figures are labeled as follows:

[0019] 1. Upper body;

[0020] 11. First slot;

[0021] 12. Pins;

[0022] 2. Lower scale body;

[0023] 21. Second slot;

[0024] 3. Fixing components;

[0025] 31. First fastener;

[0026] 32. Second fastener;

[0027] 33. First cover plate;

[0028] 34. Second cover plate;

[0029] 4. First sensor;

[0030] 5. Second sensor;

[0031] 6. Communication module;

[0032] 7. Power supply module;

[0033] 8. Control unit;

[0034] 9. Precast beam end formwork. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0036] Please see Figures 1 to 3This embodiment provides a bridge precast beam end template verticality and deformation monitoring instrument, including an upper ruler 1, a lower ruler 2, a fixing component 3, a first sensor 4, a second sensor 5, a communication module 6, a power module 7, and a control unit 8. The upper ruler 1 is provided with a first slot 11; the lower ruler 2 is hinged to the upper ruler 1 and is provided with a second slot 21; the fixing component 3 includes a first fixing member 31 and a second fixing member 32, the first fixing member 31 is disposed on the upper ruler 1, and the second fixing member 32 is disposed on the lower ruler 2; the first sensor 4 is disposed in the first slot 11; the second sensor 5 is disposed in the second slot 21; the communication module 6 is disposed in the first slot 11; the power module 7 is disposed in the second slot 21; the control unit 8 is disposed in the second slot 21, and the control unit 8 is electrically connected to the power module 7, the communication module 6, the second sensor 5, and the first sensor 4.

[0037] The monitoring device can be placed in both an unfolded and a assembled state. When the monitoring device is in the unfolded state, the upper ruler 1 and the lower ruler 2 unfold and fit against the outer surface of the precast beam end template 9. The first fixing member 31 and the second fixing member 32 are set towards the precast beam end template 9, and the first slot 11 and the second slot 21 are set away from the precast beam end template 9. When the monitoring device is in the assembled state, the upper ruler 1 and the lower ruler 2 are assembled into a whole. The first fixing member 31 and the second fixing member 32 face outward, and the first slot 11 and the second slot 21 fit inward.

[0038] In this embodiment, the upper ruler 1 and the lower ruler 2 are symmetrically arranged, and the materials are preferably metal or polymer materials. The upper ruler 1 and the lower ruler 2 are hinged to form a foldable main structure. This structure allows the upper ruler 1 and the lower ruler 2 to undergo relative deformation with the precast beam end template 9 during the monitoring process, and also facilitates movement and carrying after folding. The first sensor 4 and the communication module 6 are installed in the first slot 11 of the upper ruler 1, and the second sensor 5, the control unit 8, and the power module 7 are installed in the second slot 21 of the lower ruler 2.

[0039] The fixing component 3 includes a first fixing member 31 and a second fixing member 32, which are respectively disposed at both ends of the upper scale body 1 and the lower scale body 2. It can employ a magnetic or vacuum adsorption structure to securely attach the monitoring instrument in its unfolded state to the surface of the precast beam end formwork 9. During installation, the monitoring instrument is attached to the outside of the precast beam end formwork 9 using the first fixing member 31 on the upper scale body 1 and the second fixing member 32 on the lower scale body 2, causing the upper scale body 1 and the lower scale body 2 to deform together with the precast beam end formwork 9.

[0040] The first sensor 4 is preferably a high-precision tilt angle detection element, which is built into the first slot 11 and connected to the control unit 8, and is used to collect the tilt angle of the upper scale body 1 relative to the vertical reference line; the second sensor 5 is preferably the same tilt angle detection element, which is set in the second slot 21, and its measuring axis is parallel to the first sensor 4.

[0041] The communication module 6 is integrated inside the first slot 11 and can use a wireless transmission protocol to transmit monitoring data in real time. The power module 7 and the control unit 8 are jointly encapsulated in the second slot 21. The power module 7 is a rechargeable lithium battery pack, and the control unit 8 includes a signal processing circuit and a microprocessor, which is responsible for calculating the difference between the dual sensor data and generating deflection analysis results.

[0042] The monitoring instrument is vertically installed on the outside of the precast beam end formwork 9 that needs to be monitored, ensuring that the upper ruler 1 and lower ruler 2 are in close contact with the precast beam end formwork 9. The inclination angle between the precast beam end formwork 9 and the vertical line can be collected through the first sensor 4, the second sensor 5, and the control unit 8, and real-time monitoring is achieved through the communication module 6. During the monitoring process, when the precast beam end formwork 9 deforms, the upper ruler 1 and lower ruler 2 will generate relative displacement as the curvature of the precast beam end formwork 9 changes. The difference in the inclination angle of the upper ruler 1 and lower ruler 2 measured by the first sensor 4 and the second sensor 5 is calculated by the control unit 8 and reflected by the deflection calculation formula to reflect the local deformation of the precast beam end formwork 9. At the same time, the communication module 6 transmits the result to an external terminal.

[0043] This embodiment utilizes a hinged structure between the upper ruler 1 and the lower ruler 2 to form a foldable main body. This allows the monitor to fit snugly against the outer surface of the precast beam end template 9 when unfolded, and is quickly and securely installed via the first fixing member 31 and the second fixing member 32, ensuring that the upper ruler 1 and lower ruler 2 deform synchronously with the precast beam end template 9 during monitoring. When assembled, the upper ruler 1 and lower ruler 2 close into a compact unit, facilitating carrying and storage. The first sensor 4 and the second sensor 5 can synchronously collect the tilt angle changes of different positions of the precast beam end template 9 relative to the vertical baseline. The difference calculation by the control unit 8 eliminates environmental interference and improves measurement accuracy. The communication module 6 and the power module 7 are respectively placed in the first slot 11 and the second slot 21, achieving physical isolation between signal transmission and power supply, reducing the risk of electromagnetic interference. The control unit 8 converts the tilt angle difference between the first sensor 4 and the second sensor 5 into the local deformation of the precast beam end template 9 using a deflection calculation formula. Combined with real-time data transmission from the communication module 6, this provides dynamic monitoring data for the construction process. The embedded layout of the first slot 11 and the second slot 21 effectively protects the first sensor 4, the second sensor 5, the control unit 8, and the power module 7, enhancing the durability of the device in complex construction environments. The overall structure balances monitoring accuracy and portability, solving the problems of poor installation adaptability and insufficient real-time data of traditional monitoring devices.

[0044] In some embodiments, the fixing component 3 further includes a first cover plate 33 and a second cover plate 34, the first cover plate 33 covering the top of the first slot 11; and the second cover plate 34 covering the top of the second slot 21.

[0045] In this embodiment, the first slot 11 is sealed and protected by the first cover plate 33; the second slot 21 is sealed and protected by the second cover plate 34, effectively preventing dust, moisture, and foreign objects in the construction environment from entering the slot, and avoiding contamination or physical damage to precision components such as the first sensor 4, communication module 6, second sensor 5, control unit 8, and power module 7. The first cover plate 33 is installed flush with the surface of the upper scale body 1, and the second cover plate 34 is seamlessly attached to the surface of the lower scale body 2, maintaining the flatness of the outer contour of the device and not affecting the close-fitting installation with the precast beam end template 9. Furthermore, the first cover plate 33 and the second cover plate 34 are made of the same material as the upper scale body 1 and the lower scale body 2 or have additional waterproof strips to enhance the sealing performance, ensure the long-term stable operation of the internal circuits and sensors of the monitoring instrument under complex working conditions, and improve the overall protection level and service life of the device.

[0046] In some embodiments, the edge of the first slot 11 is provided with a first annular step surface, and the first cover plate 33 is adapted to the first annular step surface; the edge of the second slot 21 is provided with a second annular step surface, and the second cover plate 34 is adapted to the second annular step surface.

[0047] In this embodiment, the first and second annular stepped surfaces allow the first cover plate 33 and the second cover plate 34 to be precisely embedded into the edge of the slot. The adapted stepped structure enhances the tightness of the fit between the cover plate and the slot, preventing the cover plate from accidentally falling off or shifting when the monitor is unfolded or folded. The limiting structure formed by the stepped surfaces effectively fixes the position of the cover plate during construction vibration or movement, preventing dust and moisture from seeping into the slot from the gaps. This further enhances the protection of the first sensor 4, communication module 6, second sensor 5, control unit 8, and power module 7, ensuring the long-term reliability of the monitor in complex environments.

[0048] In some embodiments, both the first sensor 4 and the second sensor 5 are acceleration tilt sensors.

[0049] In this embodiment, the first sensor 4 and the second sensor 5 are tilt sensors based on MEMS accelerometers. These sensors have advantages such as small size, light weight, low power consumption, low cost, high reliability, and high cost-effectiveness. For example, the SCA100t tilt sensor manufactured by VTI in Finland is used, with a measurement range of ±30° and an accuracy of ±1%.

[0050] The first sensor 4 and the second sensor 5 employ tilt sensors based on MEMS accelerometers. Their small size and light weight facilitate integration into the first slot 11 and the second slot 21, avoiding additional space occupation and maintaining the compactness of the overall monitoring device structure. Low power consumption reduces the energy consumption pressure on the power module 7, extending the continuous working time of the monitoring device. The advantages of low cost, high reliability, and high cost-effectiveness ensure the economic efficiency and stability of the device in long-term monitoring applications, while simultaneously meeting the cost control requirements for equipment durability and large-scale deployment in precast beam construction scenarios.

[0051] In some embodiments, the first fixing member 31 and the second fixing member 32 are magnets.

[0052] In this embodiment, the first fixing member 31 and the second fixing member 32 are magnets, which can be quickly attached and installed and disassembled through magnetic attraction. There is no need to open installation holes on the surface of the precast beam or use clamps, thus avoiding damage to the structural integrity of the precast beam and ensuring the stability of the monitoring instrument under construction vibration environment.

[0053] In some embodiments, the monitor further includes a pin 12, through which the upper scale body 1 and the lower scale body 2 are hinged.

[0054] In this embodiment, the monitor is hinged to the upper scale body 1 and the lower scale body 2 by means of pin 12, so that the folding and unfolding action is stable and reliable. After folding, the overall structure is compact and portable. When unfolded, the hinge firmly supports the monitor, adapts to different monitoring angle requirements, reduces mechanical wear, and extends service life.

[0055] In some embodiments, the upper ruler 1 has a first inclined surface on the side that is hinged to the lower ruler 2, and the lower ruler 2 has a second inclined surface on the side that is hinged to the upper ruler 1.

[0056] In this embodiment, the contact between the first inclined surface and the second inclined surface provides self-adjusting space for the deformation of the precast beam end template 9, allowing the monitoring instrument to flexibly fine-tune its angle according to the deformation of the precast beam end template 9, avoiding rigid interference, and ensuring the accuracy of monitoring data and structural reliability.

[0057] In some embodiments, there are two first fasteners 31, which are respectively disposed near both ends of the upper scale body 1; there are two second fasteners 32, which are respectively disposed near both ends of the lower scale body 2.

[0058] In this embodiment, by setting first fixing members 31 at both ends of the upper ruler 1 and second fixing members 32 at both ends of the lower ruler 2, the contact stability between the monitoring instrument and the precast beam end template 9 is enhanced, avoiding displacement or loosening caused by uneven force on a single point of fixation. At the same time, it adapts to the installation requirements of templates of different sizes, ensuring that the monitoring instrument maintains a reliable fixed state in a dynamic construction environment.

[0059] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides a bridge precast beam end template verticality and deformation monitoring instrument, including an upper scale body 1, a lower scale body 2, a fixing component 3, a first sensor 4, a second sensor 5, a communication module 6, a power supply module 7, and a control unit 8. The upper scale body 1 and the lower scale body 2 form a foldable main body, allowing the monitoring instrument to fit tightly against the outer surface of the precast beam end template 9 when unfolded. The first fixing component 31 and the second fixing component 32 enable rapid and stable installation, ensuring that the upper scale body 1 and the lower scale body 2 deform synchronously with the precast beam end template 9 during monitoring. When assembled, the upper scale body 1 and the lower scale body 2 close into a compact whole, facilitating carrying and storage. The first sensor 4 and the second sensor 5 can synchronously collect the inclination angle changes of different positions of the precast beam end template 9 relative to the vertical baseline. The difference calculation by the control unit 8 eliminates environmental interference and improves measurement accuracy. The communication module 6 and power module 7 are respectively placed in the first slot 11 and the second slot 21, achieving physical isolation between signal transmission and power supply, reducing the risk of electromagnetic interference. The control unit 8 converts the tilt angle difference between the first sensor 4 and the second sensor 5 into the local deformation of the precast beam end template 9 through the deflection calculation formula, and combines it with the real-time data transmission of the communication module 6 to provide dynamic monitoring basis for the construction process. The embedded layout of the first slot 11 and the second slot 21 effectively protects the first sensor 4 and the second sensor 5, the control unit 8 and the power module 7, enhancing the durability of the device in complex construction environments. The overall structure balances monitoring accuracy and portability, solving the problems of poor installation adaptability and insufficient real-time data of traditional monitoring devices. The annular stepped surface of the first cover plate 33 and the second cover plate 34 seals the slot, effectively blocking the intrusion of dust and moisture, improving the protection level; the magnetic fixing component 3 avoids damage to the surface of the precast beam, and the four-point distribution enhances the fixing stability; the hinged and inclined design of the pin 12 ensures folding reliability and deformation self-adaptation capability, further ensuring the accuracy of monitoring data and the reliability of the device.

[0060] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the contents of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A monitoring instrument for the verticality and deformation of precast bridge beam end formwork, characterized in that, include: The upper ruler body is provided with a first groove; The lower ruler body is hinged to the upper ruler body, and the lower ruler body is provided with a second groove. The fixing component includes a first fixing member and a second fixing member, wherein the first fixing member is disposed on the upper scale body and the second fixing member is disposed on the lower scale body; The first sensor is disposed inside the first slot. The second sensor is disposed inside the second slot. The communication module is located inside the first slot; The power module is located inside the second slot; A control unit is disposed in the second slot, and the control unit is electrically connected to the power module, the communication module, the second sensor, and the first sensor; The monitoring device can be placed in an unfolded state and an assembled state; When the monitor is in the unfolded state, the upper ruler and the lower ruler unfold and fit against the outer surface of the precast beam end template. The first fixing member and the second fixing member are arranged facing the precast beam end template, and the first slot and the second slot are arranged away from the precast beam end template. When the monitor is in the assembled state, the upper scale body and the lower scale body are assembled to form a whole, with the first fixing member and the second fixing member facing outwards, and the first slot and the second slot fitting inwards.

2. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that, The fixing component also includes: The first cover plate covers the top of the first slot; The second cover plate is placed over the second slot.

3. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 2, characterized in that, The edge of the first slot is provided with a first annular stepped surface, and the first cover plate is adapted to the first annular stepped surface; The edge of the second slot is provided with a second annular stepped surface, and the second cover plate is adapted to the second annular stepped surface.

4. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that, Both the first sensor and the second sensor are acceleration tilt sensors.

5. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that, The first and second fixing components are magnets.

6. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that it also... include: The upper ruler body and the lower ruler body are hinged by the pin.

7. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that, The upper ruler body has a first inclined surface on the side that is hinged to the lower ruler body, and the lower ruler body has a second inclined surface on the side that is hinged to the upper ruler body.

8. The bridge precast beam end formwork verticality and deformation monitoring instrument according to claim 1, characterized in that, There are two first fixing members, which are respectively located near both ends of the upper ruler body; The second fixing member consists of two parts, which are respectively installed near both ends of the lower ruler body.

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