Component stress deformation monitoring assembly and method for truss hoisting and turning-over stage

Abstract

The invention provides a component stress deformation monitoring assembly and method for a truss hoisting and turning-over stage. The detection assembly comprises a control mechanism, a plurality of stress monitoring mechanisms and data acquisition mechanisms, wherein the number of the data acquisition mechanisms is consistent with that of the stress monitoring mechanisms; the plurality of stress monitoring mechanisms are attached to the to-be-measured positions of the truss member; the data acquisition mechanism is detachably arranged on the truss and located on one side of the stress monitoring mechanism. The data acquisition mechanism comprises a shell, and a data acquisition module and a wireless transmission module which are arranged in the shell; the data acquisition module is in communication connection with a vibration pickup of the stress monitoring mechanism, and the data acquisition module is in communication connection with the control mechanism through the wireless transmission module; the two sides of the machine shell are rotationally connected with clamping plates correspondingly, clamping parts are formed at the ends, away from the machine shell, of the clamping plates, the clamping parts are rotationally connected with magnetic attraction mechanisms, and the magnetic attraction mechanisms are attracted to the truss component. According to the invention, wiring can be reduced, construction difficulty can be reduced, construction efficiency can be improved, and monitoring data can be transmitted stably in real time.

Description

Technical Field

[0001] The invention relates to the technical field of truss construction, and in particular to a component stress and deformation monitoring assembly and method for a truss during a lifting and turning stage. Background Art

[0002] At present, steel truss structures are widely used in modern bridge engineering. Due to their excellent mechanical properties, high strength and good seismic resistance, they have become an important component of long-span bridge structures. The lightweight and high-strength characteristics of steel truss structures make them more and more common in bridge construction, especially in long-span bridges and viaducts. However, with the increase in the scale of bridges, the size and weight of steel truss structures have also increased accordingly, which has brought great challenges to operations such as lifting and turning over during construction. During the lifting and turning over of the steel truss, due to the complex external forces, the steel truss components are very prone to stress deformation. If the stress deformation exceeds the allowable range, it may cause damage to the truss structure and even cause serious safety accidents. Therefore, it is very important to monitor the stress deformation of the components during the lifting and turning over stage of the truss.

[0003] However, the technical solutions for monitoring the stress and deformation of components during the lifting and turning over stage of the steel truss in the prior art usually adopt traditional wired monitoring technology to monitor the lifting and turning over process of the steel truss. The monitoring process requires a large number of acquisition lines to transmit signals. Not only is the wiring cumbersome and the construction difficult, but also because high-altitude lifting requires longer acquisition lines, during the lifting and turning over process, data transmission is easily interrupted due to factors such as line pulling and damage, and the monitoring data cannot be transmitted in real time and stably. Summary of the invention

[0004] The purpose of the present invention is to provide a component stress and deformation monitoring component and method for the lifting and turning stage of a truss, which effectively solves the technical problems in the prior art of monitoring the stress and deformation of components in the lifting and turning stage of a steel truss, such as complicated wiring, great construction difficulty, and inability to transmit monitoring data in real time and stably.

[0005] To solve the above technical problems, in the first aspect, the present invention provides a component stress and deformation monitoring assembly for use in the lifting and turning over stage of a truss, comprising a control mechanism, a plurality of stress monitoring mechanisms and data acquisition mechanisms whose number is the same as that of the stress monitoring mechanisms; the plurality of stress monitoring mechanisms are attached to the positions to be tested of the truss member; the data acquisition mechanism is detachably arranged on the truss and is located on one side of the stress monitoring mechanism; the data acquisition mechanism comprises a casing and a data acquisition module and a wireless transmission module arranged inside the casing; the data acquisition module is communicatively connected to the vibration pickup of the stress monitoring mechanism, and the data acquisition module is communicatively connected to the control mechanism via the wireless transmission module; a clamping plate is rotatably connected to each of the two sides of the casing, a clamping portion is formed at one end of the clamping plate away from the casing, the clamping portion is rotatably connected to a magnetic attraction mechanism, and the magnetic attraction mechanism is adsorbed on the truss member.

[0006] Preferably, the magnetic attraction mechanism includes a magnetic attraction seat, a first connecting member, a second connecting member and an electromagnetic plate; a first concave cavity is opened at one end of the magnetic attraction seat away from the truss member; a second concave cavity is opened at one end of the clamping portion away from the clamping plate; a first oblique guide groove and a second oblique guide groove are respectively opened on the side walls of the first concave cavity and the second concave cavity; the first connecting member is cross-rotatably connected to the second connecting member, and one end of the first connecting member is rotatably connected to the opening end of the first concave cavity, and the other end extends into the second concave cavity and is slidably connected to the second oblique guide groove; one end of the second connecting member is rotatably connected to the opening end of the second concave cavity, and the other end extends into the first concave cavity and is slidably connected to the first oblique guide groove; the electromagnetic plate is assembled at the end of the magnetic attraction seat away from the first concave cavity.

[0007] Preferably, the first connecting member includes a connecting arm and a first rotating part and a first sliding part respectively connected to the two ends of the connecting arm; the second connecting member includes a hollow cavity and a second rotating part and a second sliding part respectively connected to the two ends of the hollow cavity, and the caliber width of the hollow cavity is adapted to the width of the connecting arm; the connecting arm and the hollow cavity are both bent, and the cross-sectional shape and size of the two are consistent; a first rotating shaft is provided at the bending part of the connecting arm, and a first axial hole adapted to the first rotating shaft is provided at the bending part of the hollow cavity, and the connecting arm is rotatably connected to the first axial hole through the first rotating shaft, so that the first connecting member and the second connecting member are cross-symmetrically arranged.

[0008] Preferably, a mounting groove is provided at one end of the magnetic seat away from the first cavity, and threaded holes penetrating the magnetic seat are provided on both sides of the mounting groove, and the first locking piece is threadedly connected in the threaded hole; the electromagnetic plate is assembled in the mounting groove.

[0009] Preferably, the stress monitoring mechanism includes two mounting seats, a steel string, a sleeve and a vibration pickup; the two mounting seats are respectively connected to the two ends of the steel string and are respectively attached to the positions to be measured of the truss; the sleeve is sleeved outside the steel string, and the two ends of the sleeve extend into the two mounting seats respectively; the vibration pickup is sleeved on the outer wall of the sleeve and is communicatively connected to the data acquisition module.

[0010] Preferably, the mounting seat includes an upper clamping block and a lower clamping block; a second rotating shaft is provided on one side edge of the bottom of the upper clamping block, and a clamping interface is provided on one side edge of the upper clamping block facing away from the second rotating shaft; the lower clamping block is provided with a second axial hole adapted to the second rotating shaft, and the second rotating shaft is assembled in the second axial hole; a rotating rod is provided on the side of the lower clamping block close to the card interface, a second locking piece is connected to the rotating rod, and an end of the second locking piece away from the rotating rod is clamped in the card interface.

[0011] Preferably, a limit block is provided at each end of the steel string, a limit opening is provided at the bottom of the upper clamping block and the top of the lower clamping block respectively, the two limit openings are combined to form a limit groove matched with the limit block, and the limit block is clamped in the limit groove.

[0012] Preferably, the mounting seat also includes a bonding plate, a connecting block is provided on the top of the bonding plate, and a plug-in hole is provided on each side of the connecting block; a connecting groove adapted to the connecting block is provided at the bottom of the lower clamping block, and the lower clamping block is connected to the connecting block through the connecting groove; through holes corresponding to the plug-in holes are provided on the side walls of both sides of the lower clamping block, and a limiting cylinder is provided on the outer wall of the lower clamping block located at the through hole, and a pull rod is provided in the limiting cylinder, one end of the pull rod is located on the outer side of the limiting cylinder, and the other end passes through the limiting cylinder and the through hole and extends into the plug-in hole; a limiting ring is fixed on the outer peripheral wall of the pull rod located in the limiting cylinder, and the limiting ring can slide in the limiting cylinder with the pull rod; a set of springs arranged outside the pull rod is provided in the limiting cylinder, one end of the spring is fixedly connected to the surface of the limiting ring, and the other end is connected to the inner wall of the end of the limiting cylinder away from the lower clamping block.

[0013] Preferably, the data acquisition mechanism also includes a battery installed inside the casing, and the data acquisition module and the wireless transmission module are electrically connected to the battery respectively; a solar power generation panel is arranged on the top of the casing, and the solar power generation panel is electrically connected to the battery.

[0014] In a second aspect, the present invention provides a method for monitoring stress and deformation of components during the lifting and turning stage of a truss, which is applied to the component stress and deformation monitoring assembly for the lifting and turning stage of a truss described in the first aspect, and comprises the following steps:

[0015] A plurality of stress monitoring mechanisms are attached to positions of the truss member where stress and deformation need to be measured;

[0016] Place the data acquisition mechanism on one side of the stress monitoring mechanism, rotate the clamping plates on both sides of the housing so that the clamping parts of the two clamping plates are clamped on the two side edges of the truss member respectively, and rotate the magnetic attraction mechanism toward the inside of the truss member and adsorb it on the bottom of the top plate of the truss member;

[0017] Connecting the data line of the vibration pickup of the stress monitoring mechanism to the data line interface of the housing, so that the vibration pickup of the monitoring mechanism establishes a communication connection with the data acquisition module inside the housing;

[0018] The data acquisition module is used to collect the monitoring data transmitted by the stress monitoring mechanism in real time, and the monitoring data is sent to the control mechanism through the wireless transmission module, and the control mechanism is used to analyze and process the monitoring data.

[0019] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0020] (1) The present invention provides a component stress and deformation monitoring assembly for use in the lifting and turning stage of a truss. The component comprises a control mechanism, a stress monitoring mechanism and a data acquisition mechanism, and the data acquisition mechanism comprises a housing, a data acquisition module and a wireless transmission module. The housing comprises a clamping plate, a clamping portion is provided on the clamping plate, and a magnetic attraction mechanism is connected to the clamping portion. Through the coordinated use of the above components, not only can the stress and deformation of key parts of the steel truss during the lifting and turning process be monitored, but also wiring can be reduced, construction difficulty can be reduced, construction efficiency can be improved, and complicated wiring processes on the steel truss can be avoided. The monitoring data can be transmitted in real time and stably, and the risk of data transmission interruption due to factors such as line pulling and damage during the lifting and turning process can be reduced.

[0021] (2) The present invention provides a component stress and deformation monitoring assembly for use in the truss lifting and turning stage. The component comprises a magnetic seat, a first connecting member, a second connecting member and an electromagnetic plate. The magnetic seat comprises a first concave cavity, the clamping portion comprises a second concave cavity, and the side walls of the first concave cavity and the second concave cavity are respectively provided with a first inclined guide groove and a second inclined guide groove. Through the coordinated use of the above components, not only can the data acquisition mechanism be firmly fixed on the steel truss component to ensure the stability of data acquisition and transmission, but also the disassembly and assembly of the data acquisition mechanism can be facilitated to improve construction efficiency.

[0022] (3) The present invention provides a component stress and deformation monitoring assembly for use in the truss lifting and turning stage. The component comprises a mounting seat provided with a bonding plate, and the bonding plate is provided with a connecting block. The connecting block is provided with a plug-in hole, and the lower clamping block is provided with a connecting groove and a limiting cylinder. The limiting cylinder is provided with a pull rod, a limiting ring and a spring. Through the coordinated use of the above components, not only can the stress monitoring mechanism be easily bonded to the steel truss component, but the stress monitoring mechanism can also be quickly dismantled after the monitoring is completed, thereby improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the prior art and the embodiments of the present application, the drawings required for use in the description of the prior art and the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a cross-sectional view of the use status of the data acquisition mechanism and the magnetic attraction mechanism in the component stress and deformation monitoring assembly used in the truss lifting and turning stage of the present invention.

[0025] Figure 2 for Figure 1 A schematic diagram of the enlarged structure in the middle.

[0026] Figure 3 It is a schematic diagram of the assembly structure of the data acquisition mechanism and the magnetic attraction mechanism in the component stress and deformation monitoring assembly used in the truss lifting and turning stage in the present invention.

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0028] Figure 5 It is a partial structural schematic diagram of the data acquisition mechanism in the component stress and deformation monitoring assembly used in the truss lifting and turning stage in the present invention.

[0029] Figure 6 It is an assembly exploded view of the first connecting member and the second connecting member in the component stress and deformation monitoring assembly used in the truss lifting and turning stage of the present invention.

[0030] Figure 7 It is a structural schematic diagram of the stress monitoring mechanism in the component stress and deformation monitoring assembly used in the truss lifting and turning stage in the present invention.

[0031] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at C in the middle.

[0032] Fig. 9 for Figure 7 Top view of the .

[0033] Fig.10 for Fig. 9 Cross-sectional view at point D in the middle.

[0034] Fig.11 for Fig.10 Enlarged schematic diagram of the structure at E in the middle.

[0035] Fig.12It is a partial structural exploded view of the stress monitoring mechanism in the component stress and deformation monitoring assembly used in the truss lifting and turning stage in the present invention.

[0036] Fig.13 The figure is an overall structural block diagram of the component stress and deformation monitoring assembly used in the truss lifting and turning stage in the present invention.

[0037] Description of the accompanying drawings: control mechanism 100, stress monitoring mechanism 200, mounting seat 210, upper clamping block 211, second rotating shaft 211A, clamping interface 211B, lower clamping block 212, second shaft hole 212A, rotating rod 212B, locking member 212C, connecting groove 212D, limiting opening 213, fitting plate 214, connecting block 214A, plug hole 214B, limiting cylinder 215, pull rod 215A, limiting ring 215B, spring 215C, steel string 220, limiting block 221, sleeve 230, vibration pickup 240, data acquisition mechanism 300, housing 310, clamping plate 311, clamping part 312, second cavity 312A, second inclined guide groove 312B, solar panel 313, data acquisition module 320, wireless transmission module 330, battery 340, magnetic mechanism 400, magnetic seat 410, first cavity 411, first inclined guide groove 412, first connecting member 420, connecting arm 421, first rotating shaft 421A, first rotating part 422, first sliding part 423, second connecting member 430, hollow body 431, first axial hole 431A, second rotating part 432, second sliding part 433, electromagnetic plate 440, steel truss member 500. DETAILED DESCRIPTION

[0038] In order to better understand the purpose, structure and function of the present invention, the component stress and deformation monitoring assembly and method for the truss lifting and turning stage provided by the present invention are further described in detail below in conjunction with the accompanying drawings, so that technical personnel in the field can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0039] See also Figures 1 to 13As shown, in the first aspect, an embodiment of the present invention provides a component stress deformation monitoring assembly for a truss lifting and turning stage, comprising a control mechanism 100, a plurality of stress monitoring mechanisms 200, and data acquisition mechanisms 300 having the same number as the stress monitoring mechanisms 200; the plurality of stress monitoring mechanisms 200 are attached to the positions to be tested of the truss component; the data acquisition mechanism 300 is detachably arranged on the truss and is located on one side of the stress monitoring mechanism 200; the data acquisition mechanism 300 comprises a housing 310 and a housing 310 disposed on the housing 310; 0; the data acquisition module 320 is connected to the vibration pickup 240 of the stress monitoring mechanism 200 for communication, and the data acquisition module 320 is connected to the control mechanism 100 for communication via the wireless transmission module 330; a clamping plate 311 is rotatably connected to both sides of the housing 310, a clamping portion 312 is formed at one end of the clamping plate 311 away from the housing 310, and the clamping portion 312 is rotatably connected to a magnetic attraction mechanism 400, which is adsorbed on the truss member.

[0040] Since a control mechanism 100, a stress monitoring mechanism 200 and a data acquisition mechanism 300 are provided, and the data acquisition mechanism 300 is provided with a housing 310, a data acquisition module 320 and a wireless transmission module 330, the housing 310 is provided with a clamping plate 311, the clamping plate 311 is provided with a clamping portion 312, and the clamping portion 312 is connected with a magnetic attraction mechanism 400. Through the coordinated use of the above components, not only can the stress and deformation of key parts of the steel truss during the lifting and turning process be monitored, but also the wiring can be reduced, the construction difficulty can be reduced, the construction efficiency can be improved, the complicated wiring process on the steel truss can be avoided, the monitoring data can be transmitted in real time and stably, and the risk of data transmission interruption due to factors such as line pulling and damage during the lifting and turning process can be reduced.

[0041] Specifically, by setting up a stress monitoring mechanism 200, it is used to monitor the stress and deformation of the position to be tested of the steel truss, and obtain the stress information of the key position of the steel truss member 500 in real time, so that the construction personnel can understand the stress state of each key part of the truss during the lifting and turning process, and provide data support for the subsequent structural analysis and safety assessment of the steel truss. A data acquisition mechanism 300 is set on one side of each stress monitoring mechanism 200 to collect the stress information transmitted by each stress monitoring mechanism 200. The data acquisition module 320 of the data acquisition mechanism 300 collects the stress information transmitted by the vibration pickup 240 of the stress monitoring mechanism 200, and converts the stress information into a digital signal, and performs preliminary processing on the data signal, for example, amplifying and filtering the digital signal, so as to improve the quality and accuracy of the digital signal, so as to make the subsequent data analysis and judgment more accurate. The wireless transmission module 330 (such as wireless network transmission, Bluetooth transmission, etc.) of the data acquisition mechanism 300 establishes a communication link with the control mechanism 100, and transmits the preliminarily processed data signal to the control mechanism 100 wirelessly, so as to realize fast remote data transmission, without cumbersome wiring, avoid the complicated wiring process on the steel truss, and reduce the risk of data transmission interruption caused by factors such as line pulling and damage during the lifting and turning process. At the same time, the wireless transmission method is more flexible, which is convenient for construction personnel to adjust the position of the data acquisition mechanism 300 and the control mechanism 100 according to the on-site conditions. By setting the housing 310, it is not only used to firmly install the entire data acquisition mechanism 300 on the steel truss, but also used to protect the internal electronic components (such as the data acquisition module 320, the wireless transmission module 330, the battery 340, etc.) from interference and damage by external environmental factors (such as dust, moisture, collision, etc.), so as to ensure the stability of data acquisition and transmission. By using the clamping plate 311 and the magnetic mechanism 400 in coordination, the casing 310 can be fixed on the steel truss. This not only ensures that the data acquisition mechanism 300 will not fall off easily during the lifting and turning over of the steel truss, thus ensuring the stability of data collection and transmission, but also makes it convenient for construction workers to install and disassemble the data acquisition mechanism 300, greatly improving construction efficiency.

[0042] Furthermore, the stress monitoring mechanism 200 includes two mounting seats 210, a steel string 220, a sleeve 230 and a vibration pickup 240; the two mounting seats 210 are respectively connected to the two ends of the steel string 220 and are respectively fitted on the positions to be tested of the truss; the sleeve 230 is sleeved outside the steel string 220, and the two ends of the sleeve 230 extend into the two mounting seats 210 respectively; the vibration pickup 240 is sleeved on the outer wall of the sleeve 230 and is connected to the data acquisition module 320 for communication. Specifically, the two mounting seats 210 are used to clamp the steel string 220 and fit and fix it on the surface of the steel truss member 500. The sleeve 230 is used to seal and protect the steel string 220 in the tube from external interference and damage, and to support and tension the two mounting seats 210 at both ends, so that the steel string 220 clamped on the two end seats is fully tensioned to achieve the purpose of vibration. The two mounting seats 210 are pasted on the corresponding positions of the surface to be tested of the steel truss member 500. After consolidation, when the steel truss member 500 is deformed during the lifting and turning process, the two mounting seats 210 of the stress monitoring mechanism 200 are respectively attached to the positions to be tested of the steel truss member 500. The deformation of the steel truss member 500 will cause the distance between the two mounting seats 210 to change. The change in the distance between the mounting seats 210 will cause the steel string 220 to be stretched or contracted. The change in the length of the steel string 220 reflects the strain of the steel truss member 500 at this position. The vibration pickup 240 is sleeved on the outer wall of the sleeve 230 to sense the vibration of the steel string 220 and convert the mechanical vibration into an electrical signal to achieve the monitoring purpose. That is, when the steel string 220 vibrates due to strain, due to the change in the surrounding magnetic field, an induced electromotive force is generated in the coil of the vibration pickup 240, thereby realizing the conversion of mechanical vibration into an electrical signal, and the electrical signal is transmitted to the data acquisition module 320 through the data line.

[0043] In a preferred embodiment, the magnetic attraction mechanism 400 includes a magnetic attraction seat 410, a first connecting member 420, a second connecting member 430 and an electromagnetic plate 440; a first concave cavity 411 is formed at one end of the magnetic attraction seat 410 away from the truss member; a second concave cavity 312A is formed at one end of the clamping portion 312 away from the clamping plate 311; first oblique guide grooves 412 and second oblique guide grooves 312B are formed on the side walls of the first concave cavity 411 and the second concave cavity 312A, respectively; the first connecting member 420 and the second connecting member 430 are connected to each other by a first connecting member 420 and a second connecting member 430; The connecting piece 430 is cross-rotatably connected, and one end of the first connecting piece 420 is rotationally connected to the opening end of the first cavity 411, and the other end extends into the second cavity 312A and is slidably connected to the second inclined guide groove 312B; one end of the second connecting piece 430 is rotationally connected to the opening end of the second cavity 312A, and the other end extends into the first cavity 411 and is slidably connected to the first inclined guide groove 412; the electromagnetic plate 440 is assembled at the end of the magnetic suction seat 410 away from the first cavity 411.

[0044] Since a magnetic seat 410, a first connecting member 420, a second connecting member 430 and an electromagnetic plate 440 are provided, and the magnetic seat 410 is provided with a first concave cavity 411, the clamping portion 312 is provided with a second concave cavity 312A, and the side walls of the first concave cavity 411 and the second concave cavity 312A are respectively provided with a first oblique guide groove 412 and a second oblique guide groove 312B, through the coordinated use of the above components, not only can the data acquisition mechanism 300 be firmly fixed on the steel truss member 500 to ensure the stability of data acquisition and transmission, but also the disassembly and assembly of the data acquisition mechanism 300 can be facilitated to improve the construction efficiency. Specifically, by providing the first connecting member 420 and the second connecting member 430, it is used to realize the connection between the clamping portion 312 and the magnetic seat 410, and the magnetic seat 410 can be rotated in the direction close to or away from the bottom of the steel truss member 500. When the data acquisition mechanism 300 needs to be fixed on the steel truss member 500, the magnetic seat 410 is rotated toward the bottom side of the steel truss member 500. When the magnetic seat 410 approaches the truss member, the first connecting member 420 rotates at the opening of the first cavity 411, and the other end slides from the inside to the outside in the second cavity 312A along the second inclined guide groove 312B. At the same time, the second connecting member 430 rotates at the opening of the second cavity 312A, and the other end slides in the first cavity 412A. 1 slides from inside to outside along the first inclined guide groove 412 to change the relative position and angle between the magnetic seat 410 and the clamping portion 312 until the electromagnetic plate 440 abuts against the bottom of the steel truss member 500, and then the electromagnetic plate 440 is energized by the battery 340 in the housing 310, so that the electromagnetic plate 440 generates a magnetic force to tightly adsorb the magnetic mechanism 400 on the steel truss member 500, thereby fixing the data acquisition mechanism 300 on the steel truss member 500. On the contrary, when it is necessary to remove the data acquisition mechanism 300 from the steel truss member 500, the circuit of the electromagnetic plate 440 is disconnected to eliminate the magnetic force of the electromagnetic plate 440, and the magnetic base 410 is rotated to the side away from the bottom of the steel truss member 500. In the process of the magnetic base 410 moving away from the truss member, the first connecting member 420 rotates at the opening of the first cavity 411, and the other end slides from the outside to the inside in the second cavity 312A along the second inclined guide groove 312B. At the same time, the second connecting member 430 rotates at the opening of the second cavity 312A, and the other end slides from the outside to the inside in the first cavity 411 along the first inclined guide groove 412, so that the data acquisition mechanism 300 can be removed from the steel truss member 500.

[0045] Furthermore, the first connecting member 420 includes a connecting arm 421 and a first rotating portion 422 and a first sliding portion 423 respectively connected to the two ends of the connecting arm 421; the second connecting member 430 includes a hollow cavity 431 and a second rotating portion 432 and a second sliding portion 433 respectively connected to the two ends of the hollow cavity 431, and the caliber width of the hollow cavity 431 is adapted to the width of the connecting arm 421; the connecting arm 421 and the hollow cavity 431 are both bent, and the cross-sectional shape and size of the two are consistent; a first rotating shaft 421A is provided at the bending portion of the connecting arm 421, and a first axial hole 431A adapted to the first rotating shaft 421A is provided at the bending portion of the hollow cavity 431, and the connecting arm 421 is rotatably connected to the first axial hole 431A through the first rotating shaft 421A, so that the first connecting member 420 and the second connecting member 430 are cross-symmetrically arranged. The first rotating part 422 and the second rotating part 432 are respectively provided with a rotating shaft, so that the first connecting member 420 and the second connecting member 430 rotate around the opening end of the first cavity 411 and the second cavity 312A respectively. When the magnetic seat 410 is close to the bottom of the steel truss member 500, the first sliding part 423 of the first connecting member 420 slides in the second inclined guide groove 312B of the second cavity 312A, and the second sliding part 433 of the second connecting member 430 slides in the first inclined guide groove 412 of the first cavity 411. During the sliding process, the connecting arm 421 and the hollow cavity 431 rotate relative to each other around the first rotating shaft 421A, and according to the guidance of the inclined guide groove, the relative position between the magnetic seat 410 and the clamping part 312 is changed to adapt to the surface morphology of the truss member and achieve a close fit.

[0046] In a preferred embodiment, the mounting base 210 includes an upper clamping block 211 and a lower clamping block 212; a second rotating shaft 211A is provided on a bottom side edge of the upper clamping block 211, and a clamping interface 211B is provided on a side edge of the upper clamping block 211 away from the second rotating shaft 211A; the lower clamping block 212 is provided with a second axial hole 212A adapted to the second rotating shaft 211A, and the second rotating shaft 211A is assembled in the second axial hole 212A; a rotating rod 212B is provided on a side of the lower clamping block 212 close to the clamping interface 211B, and a second locking member 212C is connected to the rotating rod 212B, and the end of the second locking member 212C away from the rotating rod 212B is clamped in the clamping interface 211B. Since the mounting seat 210 is provided with an upper clamping block 211 and a lower clamping block 212, and the upper clamping block 211 is provided with a second rotating shaft 211A and a clamping interface 211B, and the lower clamping block 212 is provided with a second axial hole 212A and a rotating rod 212B, and the rotating rod 212B is connected with a second locking member 212C, through the cooperation between the above components, not only can the steel string 220 and the sleeve 230 be fixed, but also the difficulty of disassembly and assembly can be reduced, which is conducive to the replacement and maintenance of subsequent accessories. Specifically, through the cooperation of the second rotating shaft 211A and the second axial hole 212A, the upper clamping block 211 is rotated relative to the lower clamping block 212 to open or close the upper clamping block 211, so that the steel string 220 and the sleeve 230 can be fixed on the mounting seat 210 or taken out from the mounting seat 210. By using the card interface 211B, the rotating rod 212B and the second locking piece 212C in coordination, the upper card block 211 and the lower card block 212 can be locked or released. When the upper card block 211 and the lower card block 212 need to be locked, the second locking piece 212C is rotated by the rotating rod 212B and the end of the second locking piece 212C away from the rotating rod 212B is clamped into the card interface 211B, and the nut of the second locking piece 212C is tightened to lock and fix.

[0047] Furthermore, a limit block 221 is provided at each end of the steel string 220, and a limit opening 213 is provided at the bottom of the upper clamping block 211 and the top of the lower clamping block 212, respectively. The two limit openings 213 are enclosed to form a limit groove that matches the limit block 221, and the limit block 221 is clamped in the limit groove. Since the steel string 220 is provided with a limit block 221, and the upper clamping block 211 and the lower clamping block 212 are respectively provided with the limit openings 213, the installation and removal of the steel string 220 are more convenient. During installation, the steel string 220 can be initially positioned by simply placing the limit block 221 into the limit opening 213; when the upper clamping block 211 and the lower clamping block 212 of the mounting seat 210 are closed and fixed, the two limit openings 213 are also enclosed to form a complete limit groove, so that the limit block 221 is clamped in the limit groove, thereby firmly fixing the two ends of the steel string 220 on the mounting seat 210 at both ends. When maintaining or replacing the steel string 220, the steel string 220 can also be quickly taken out of the limit groove, which greatly improves work efficiency.

[0048] In a preferred embodiment, the mounting base 210 further includes a bonding plate 214, a connection block 214A is provided on the top of the bonding plate 214, and a plug hole 214B is respectively provided on both sides of the connection block 214A; a connection groove 212D adapted to the connection block 214A is provided at the bottom of the lower clamping block 212, and the lower clamping block 212 is connected to the connection block 214A through the connection groove 212D; through holes corresponding to the plug holes 214B are provided on the side walls of both sides of the lower clamping block 212, and a limiting cylinder 215 is provided on the outer wall of the lower clamping block 212 at the through hole, and a Pull rod 215A, one end of the pull rod 215A is located on the outside of the limit cylinder 215, and the other end passes through the limit cylinder 215 and the through hole and extends to the plug-in hole 214B; the pull rod 215A is located in the limit cylinder 215. A limit ring 215B is fixed on the outer peripheral wall of the limit cylinder 215, and the limit ring 215B can slide in the limit cylinder 215 along with the pull rod 215A; a set of springs 215C is arranged outside the pull rod 215A in the limit cylinder 215, one end of the spring 215C is fixedly connected to the surface of the limit ring 215B, and the other end is connected to the inner wall of the limit cylinder 215 away from the lower block 212.

[0049] Since the mounting seat 210 is provided with a bonding plate 214, and the bonding plate 214 is provided with a connecting block 214A, the connecting block 214A is provided with a plug hole 214B, the lower clamping block 212 is provided with a connecting groove 212D and a limit tube 215, and the limit tube 215 is provided with a pull rod 215A, a limit ring 215B and a spring 215C, through the coordinated use of the above components, not only can the stress monitoring mechanism 200 be easily bonded to the steel truss member 500, but also the stress monitoring mechanism 200 can be quickly dismantled after the monitoring is completed, thereby improving the construction efficiency. Among them, in the embodiment of the present application, the bonding plate 214 is made of ordinary iron plate. When installing the bonding plate 214, pull the rod 215A to make the limit ring 215B drive the spring 215C to compress. After the connection groove 212D at the bottom of the lower clamping block 212 is plugged into the bonding plate 214, the plug holes 214B on both sides of the connection block 214A correspond to the through holes on the side walls of the lower clamping block 212. Release the rod 215A to make the spring 215C rebound, thereby driving the end of the rod 215A to pass through the through hole and insert into the plug hole 214B, so that the bonding plate 214 is firmly connected to the lower clamping block 212. When installing the stress monitoring mechanism 200, first glue is adhered to the bonding plate 214 at the bottom of the lower clamping block 212, and then the stress monitoring mechanism 200 is adhered to the surface of the steel truss member 500 through the glue on the bonding plate 214. When the stress monitoring mechanism 200 needs to be dismantled after the inspection is completed, the pull rod 215A is pulled to make the limit ring 215B drive the spring 215C to compress, and at the same time, the end of the pull rod 215A located in the plug hole 214B is withdrawn from the plug hole 214B. At this time, the connecting block 214A of the bonding plate 214 can be pulled out from the connecting groove 212D of the lower clamping block 212 to complete the disassembly. Since the cost of the bonding plate 214 is relatively low, and there will be no impact even if it adheres to the surface of the steel truss member 500, the bonding plate 214 can be directly cleaned and removed with a spatula. At the same time, there is no need to clean the glue of the bonding plate 214 in the later stage, which greatly improves the construction efficiency while reducing time and manpower and material resources.

[0050] In a preferred embodiment, the data acquisition mechanism 300 also includes a battery 340 installed inside the casing 310, and the data acquisition module 320 and the wireless transmission module 330 are electrically connected to the battery 340 respectively; a solar power generation panel 313 is arranged on the top of the casing 310, and the solar power generation panel 313 is electrically connected to the battery 340.

[0051] Since the storage battery 340 and the solar panel 313 are provided, stable power support can be provided for electronic components such as the data acquisition module 320, the wireless transmission module 330 and the electromagnetic panel 440. The solar panel 313 is provided to absorb sunlight energy and convert it into electrical energy, and the generated electrical energy is transmitted to the storage battery 340 through electrical connection to charge the storage battery 340, thereby replenishing the electrical energy consumed by the storage battery 340 during operation.

[0052] In a second aspect, an embodiment of the present invention further provides a component stress and deformation monitoring method for a truss during a hoisting and turning stage, which is applied to the component stress and deformation monitoring assembly for a truss during a hoisting and turning stage described in the first aspect, and comprises the following steps:

[0053] Step S1 : attaching a plurality of stress monitoring mechanisms 200 to positions of a truss member where stress and deformation need to be measured.

[0054] Specifically, the surface of the steel truss member 500 at the position to be detected is first cleaned to remove dust, rust and other impurities to ensure that the stress monitoring mechanism 200 can fit tightly with the steel truss member 500 and ensure the accuracy of the monitoring data. Then glue is adhered to the bonding plate 214 at the bottom of the lower clamping block 212, and the stress monitoring mechanism 200 is adhered to the surface of the steel truss member 500 through the glue on the bonding plate 214.

[0055] Step S2, place the data acquisition mechanism 300 on one side of the stress monitoring mechanism 200, rotate the clamping plates 311 on both sides of the housing 310, so that the clamping parts 312 of the two clamping plates 311 are clamped on the two side edges of the truss member respectively, and rotate the magnetic attraction mechanism 400 toward the inner side of the truss member and adsorb it on the bottom of the top plate of the truss member.

[0056] Specifically, the data acquisition mechanism 300 is first placed on one side of the stress monitoring mechanism 200, and the clamping plates 311 on both sides of the housing 310 are rotated so that the clamping parts 312 of the two clamping plates 311 are respectively clamped on the two side edges of the truss member, and the magnetic attraction mechanism 400 is rotated toward the inner side of the steel truss member 500 so that the electromagnetic plate 440 of the magnetic attraction mechanism 400 is aligned with the bottom of the top plate of the steel truss member 500, and the power of the electromagnetic plate 440 is turned on. After the electromagnetic plate 440 generates magnetic force, it slowly approaches the bottom of the top plate of the steel truss member 500 until the electromagnetic plate 440 is firmly adsorbed on the bottom of the top plate of the truss member, and then the first locking member 212C is tightened to reinforce the magnetic seat 410 to enhance the connection stability between the magnetic seat 410 and the steel truss member 500, further improve the connection stability between the data acquisition mechanism 300 and the steel truss member 500, and ensure the stability of data acquisition and transmission.

[0057] Step S3 , connecting the data line of the vibration pickup 240 of the stress monitoring mechanism 200 to the data line interface of the housing 310 , so that the vibration pickup 240 of the monitoring mechanism establishes a communication connection with the data acquisition module 320 inside the housing 310 .

[0058] Specifically, when the steel string 220 vibrates due to strain, the surrounding magnetic field changes, thereby generating an induced electromotive force in the coil of the vibration pickup 240, thereby converting the mechanical vibration into an electrical signal, and transmitting the electrical signal to the data acquisition module 320 through the data line.

[0059] Step S4: Use the data acquisition module 320 to collect the monitoring data transmitted by the stress monitoring mechanism 200 in real time, and send the monitoring data to the control mechanism 100 through the wireless transmission module 330, and use the control mechanism 100 to analyze and process the monitoring data.

[0060] Specifically, the data acquisition module 320 of the data acquisition mechanism 300 collects the stress information transmitted by the vibration pickup 240 of the stress monitoring mechanism 200, and converts the stress information into a digital signal, and performs preliminary processing on the data signal, for example, amplifying and filtering the digital signal to improve the quality and accuracy of the digital signal, so that the subsequent data analysis and judgment are more accurate. The wireless transmission module 330 of the data acquisition mechanism 300 (such as wireless network transmission, Bluetooth transmission, etc.) establishes a communication link with the control mechanism 100, and wirelessly transmits the preliminarily processed data signal to the control mechanism 100, so as to realize the rapid remote transmission of data without cumbersome wiring, avoid the complicated wiring process on the steel truss, and reduce the risk of data transmission interruption caused by factors such as line pulling and damage during the lifting and turning process. After receiving the monitoring data sent by the wireless transmission module 330, the control mechanism 100 performs in-depth analysis and processing on the monitoring data. For example, the stress magnitude and deformation degree of the steel truss member 500 at different positions are calculated, whether the stress exceeds the safety threshold, and the stability of the steel truss during the lifting and turning process is predicted. Based on the analysis results, a monitoring report is generated in a timely manner, and an alarm signal is issued when necessary to remind construction personnel to take corresponding measures.

[0061] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A component stress and deformation monitoring component for truss lifting and turning stage, characterized in that: The invention comprises a control mechanism (100), a plurality of stress monitoring mechanisms (200) and data acquisition mechanisms (300) the same number as the stress monitoring mechanisms (200); the plurality of stress monitoring mechanisms (200) are attached to positions to be tested on a truss member; the data acquisition mechanism (300) is detachably arranged on the truss and is located on one side of the stress monitoring mechanism (200); the data acquisition mechanism (300) comprises a housing (310) and a data acquisition module (320) and a wireless transmission module (330) arranged inside the housing (310); the data acquisition module (320) and the wireless transmission module (330) are ... The collection module (320) is communicatively connected with the vibration pickup (240) of the stress monitoring mechanism (200), and the data acquisition module (320) is communicatively connected with the control mechanism (100) via the wireless transmission module (330); a clamping plate (311) is rotatably connected to both sides of the housing (310), a clamping portion (312) is formed at one end of the clamping plate (311) away from the housing (310), and the clamping portion (312) is rotatably connected with a magnetic attraction mechanism (400), and the magnetic attraction mechanism (400) is adsorbed on the truss member.

2. The component stress and deformation monitoring assembly for truss lifting and turning stage according to claim 1 is characterized in that: The magnetic attraction mechanism (400) comprises a magnetic attraction seat (410), a first connecting member (420), a second connecting member (430) and an electromagnetic plate (440); a first concave cavity (411) is provided at one end of the magnetic attraction seat (410) away from the truss member; a second concave cavity (312A) is provided at one end of the clamping portion (312) away from the clamping plate (311); a first oblique guide groove (412) and a second oblique guide groove (312B) are respectively provided on the side walls of the first concave cavity (411) and the second concave cavity (312A); the first connecting member (420) and the second connecting member (430) are connected to each other by a plurality of means. 30) are cross-rotatably connected, and one end of the first connecting member (420) is rotatably connected to the open end of the first concave cavity (411), and the other end extends into the second concave cavity (312A) and is slidably connected to the second inclined guide groove (312B); one end of the second connecting member (430) is rotatably connected to the open end of the second concave cavity (312A), and the other end extends into the first concave cavity (411) and is slidably connected to the first inclined guide groove (412); the electromagnetic plate (440) is assembled on the end of the magnetic suction seat (410) away from the first concave cavity (411).

3. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to claim 2 is characterized in that: The first connecting member (420) comprises a connecting arm (421) and a first rotating portion (422) and a first sliding portion (423) respectively connected to two ends of the connecting arm (421); the second connecting member (430) comprises a hollow cavity (431) and a second rotating portion (432) and a second sliding portion (433) respectively connected to two ends of the hollow cavity (431); the caliber width of the hollow cavity (431) is adapted to the width of the connecting arm (421); the connecting arm (421) and the hollow cavity ( 431) are both bent, and the cross-sectional shapes and sizes of the two are consistent; a first rotating shaft (421A) is provided at the bending part of the connecting arm (421), and a first axial hole (431A) adapted to the first rotating shaft (421A) is provided at the bending part of the hollow cavity (431); the connecting arm (421) is rotatably connected to the first axial hole (431A) through the first rotating shaft (421A), so that the first connecting member (420) and the second connecting member (430) are cross-symmetrically arranged.

4. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to any one of claims 1 to 3, characterized in that: The stress monitoring mechanism (200) comprises two mounting seats (210), a steel string (220), a sleeve (230) and a vibration pickup (240); the two mounting seats (210) are respectively connected to the two ends of the steel string (220) and are respectively fitted to the positions to be measured of the truss; the sleeve (230) is sleeved outside the steel string (220), and the two ends of the sleeve (230) respectively extend into the two mounting seats (210); the vibration pickup (240) is sleeved on the outer side wall of the sleeve (230) and is communicatively connected to the data acquisition module (320).

5. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to claim 4 is characterized in that: The mounting seat (210) comprises an upper clamping block (211) and a lower clamping block (212); a second rotating shaft (211A) is arranged on a side edge of the bottom of the upper clamping block (211); a clamping interface (211B) is arranged on a side edge of the upper clamping block (211) away from the second rotating shaft (211A); a second shaft hole (212A) adapted to the second rotating shaft (211A) is arranged on the lower clamping block (212); a rotating rod (212B) is arranged on a side of the lower clamping block (212) close to the clamping interface (211B); a second locking member (212C) is connected to the rotating rod (212B), and an end of the second locking member (212C) away from the rotating rod (212B) is clamped in the clamping interface (211B).

6. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to claim 5 is characterized in that: A limit block (221) is respectively arranged at both ends of the steel string (220); a limit opening (213) is respectively provided at the bottom of the upper clamping block (211) and the top of the lower clamping block (212); the two limit openings (213) are enclosed to form a limit groove matched with the limit block (221); the limit block (221) is clamped in the limit groove.

7. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to claim 5 is characterized in that: The mounting seat (210) further comprises a bonding plate (214), the top of which is provided with a connecting block (214A), and two sides of the connecting block (214A) are respectively provided with a plug-in hole (214B); a connecting groove (212D) adapted to the connecting block (214A) is provided at the bottom of the lower clamping block (212), and the lower clamping block (212) is connected to the connecting block (214A) via the connecting groove (212D); through holes corresponding to the plug-in holes (214B) are provided on the side walls on both sides of the lower clamping block (212), and a limiting cylinder (215) is provided on the outer wall of the lower clamping block (212) at the through hole, and a pull rod (215) is provided in the limiting cylinder (215). A), one end of the pull rod (215A) is located on the outside of the limiting cylinder (215), and the other end passes through the limiting cylinder (215) and the through hole and extends into the plug hole (214B); a limiting ring (215B) is fixed on the outer peripheral wall of the pull rod (215A) located in the limiting cylinder (215), and the limiting ring (215B) can slide in the limiting cylinder (215) along with the pull rod (215A); a spring (215C) is arranged outside the pull rod (215A) in the limiting cylinder (215), one end of the spring (215C) is fixedly connected to the surface of the limiting ring (215B), and the other end is connected to the inner wall of one end of the limiting cylinder (215) away from the lower clamping block (212).

8. The component stress and deformation monitoring assembly for the truss lifting and turning stage according to claim 4 is characterized in that: The data acquisition mechanism (300) further comprises a storage battery (340) installed inside the housing (310), and the data acquisition module (320) and the wireless transmission module (330) are respectively electrically connected to the storage battery (340); a solar power generation panel (313) is arranged on the top of the housing (310), and the solar power generation panel (313) is electrically connected to the storage battery (340).

9. A component stress and deformation monitoring method for a truss during hoisting and turning over, applied to a component stress and deformation monitoring assembly for a truss during hoisting and turning over as claimed in any one of claims 1 to 8, characterized in that: The steps include: A plurality of stress monitoring mechanisms (200) are attached to positions of the truss member to be tested where stress and deformation need to be measured; The data acquisition mechanism (300) is placed on one side of the stress monitoring mechanism (200), the clamping plates (311) on both sides of the housing (310) are rotated so that the clamping parts (312) of the two clamping plates (311) are respectively clamped on the two side edges of the truss member, and the magnetic attraction mechanism (400) is rotated toward the inside of the truss member and adsorbed on the bottom of the top plate of the truss member; Connecting a data line of a vibration pickup (240) of the stress monitoring mechanism (200) to a data line interface of a housing (310) so that a communication connection is established between the vibration pickup (240) of the monitoring mechanism and a data acquisition module (320) inside the housing (310); The data acquisition module (320) is used to acquire monitoring data transmitted by the stress monitoring mechanism (200) in real time, and the monitoring data is sent to the control mechanism (100) via the wireless transmission module (330), and the control mechanism (100) is used to analyze and process the monitoring data.

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