Steel structure hoisting deformation monitoring device and method

Abstract

The invention relates to the technical field of engineering monitoring, and particularly provides a steel structure hoisting deformation monitoring device and method. The steel structure hoisting deformation monitoring device comprises a plurality of levels, an instrument liquid tank and a collector, each level gauge comprises; a shell, a pressure sensor and a rotating sleeve; a liquid passing cavity and a gas passing cavity are formed in the shell; the pressure sensor is placed in the shell and located between the liquid passing cavity and the ventilation cavity, and the liquid passing cavity and the ventilation cavity are isolated. The rotating sleeve is rotatably arranged in the liquid passing cavity, a plurality of baffles evenly distributed in the circumferential direction are fixedly arranged on the outer side wall of the rotating sleeve, and the plate face of each baffle is arranged in the radial direction of the rotating sleeve; when liquid is injected into the liquid passing cavity, the baffle rotates along with impact of the liquid and drives the rotating sleeve to rotate. According to the scheme, liquid flow generated when liquid is injected into the liquid passing cavity is used for pushing the baffle to rotate, so that kinetic energy of the liquid is consumed, turbulent flow is reduced, the bubble content is reduced, and the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of engineering monitoring technology, and in particular to a device and method for monitoring deformation during steel structure hoisting. Background Technology

[0002] In the steel structure hoisting construction phase, monitoring is crucial to ensure that the steel structure does not experience excessive deformation or excessive local stress concentration during hoisting. Levels, mechanical sensors, and distance sensors are commonly used monitoring devices, and their stability and accuracy directly affect the safety and quality of the hoisting operation. Mechanical sensors can detect changes in structural stress in real time, while distance sensors can accurately capture the displacement and deformation of hoisted components. These sensors complement the elevation monitoring data from the level, jointly ensuring construction safety. However, in actual use, levels face several interference factors. First, due to the storage environment, dust, deteriorated residual liquid, etc., easily adhere to the liquid passage chamber of the level, forming a microscopic gas film on the inner wall. This requires a long period of settling after liquid filling, allowing the microscopic gas film to accumulate into visible bubbles and rise to the surface and dissipate; otherwise, monitoring accuracy will be affected. Second, when filling the liquid passage chamber, because the volume of the liquid passage chamber is larger than the cross-sectional area of ​​the pipe, the liquid entering generates turbulent impacts, easily introducing a large number of new bubbles that are difficult to expel. In addition, after installation, the level instrument is also affected by environmental vibration and hydraulic pulses, causing pressure fluctuations that interfere with the results. Furthermore, changes in liquid volume caused by temperature variations can also lead to data errors. The mechanical sensor and distance sensor are also susceptible to electromagnetic, temperature, and vibration interference in the field. Anti-interference measures must be taken simultaneously with the level instrument to ensure the stability and reliability of the overall monitoring system. Summary of the Invention

[0003] The purpose of this invention is to reduce the bubble content in a level instrument, thereby improving the detection accuracy of the level instrument.

[0004] Specifically, this invention provides a steel structure hoisting deformation monitoring device, comprising: multiple levels, a liquid tank, and a data acquisition unit; the multiple levels are respectively installed at multiple detection points on the hoisted steel structure, and the multiple detection points are on the same horizontal plane before the hoisting begins; the liquid tank stores liquid and is connected in series with the multiple levels through multiple vent pipes and multiple liquid inlet pipes; the data acquisition unit is connected to the multiple levels and is used to receive and output the detection information of the multiple levels; each level includes: a housing, a pressure sensor, and a rotating sleeve; a liquid inlet cavity is formed inside the housing. The system includes a venting chamber and a liquid-flowing chamber, each with a liquid-flowing hole on one side and a venting hole on the other. The liquid-flowing chamber also has a venting hole at its top. A pressure sensor is placed inside the housing, positioned between the liquid-flowing chamber and the venting chamber, isolating them. A rotating sleeve is rotatably mounted inside the liquid-flowing chamber. Multiple baffles, evenly distributed circumferentially, are fixedly mounted on the outer wall of the rotating sleeve, with each baffle's surface arranged radially along the rotating sleeve. When liquid enters the liquid-flowing chamber, the baffles rotate due to the impact of the liquid, causing the rotating sleeve to rotate as well.

[0005] Furthermore, the liquid passage chamber is cylindrical with its axis set horizontally; the axis of the rotating sleeve is collinear with the axis of the liquid passage chamber, and the axis of the liquid passage hole is perpendicular to the axis of the liquid passage chamber; a scraper is provided at one end of the baffle facing the curved wall of the liquid passage chamber, and the scraper abuts against the curved wall of the liquid passage chamber; when the baffle rotates, it drives the scraper to scrape the curved wall of the liquid passage chamber.

[0006] Furthermore, the end of the scraper that abuts against the curved wall of the liquid passage cavity is made of a flexible material, and the end of the scraper, under the pressure of the curved wall of the liquid passage cavity, is in the shape of a hook opposite to its rotation direction.

[0007] Furthermore, a fixed sleeve is provided on the housing, with a pressure sensor fixed at one end and the other end sleeved around the outer circumference of the rotating sleeve; the rotating sleeve can rotate relative to the fixed sleeve and can move axially relative to the fixed sleeve; a scraper is provided at the end of the rotating sleeve near the fixed sleeve; multiple inclined plates evenly distributed circumferentially are also fixedly provided on the outer wall of the rotating sleeve, the inclined plates are inclined from the end away from the fixed sleeve to the other end in the direction of rotation; during the process of liquid injection into the liquid passage chamber, after the inclined plates begin to absorb water, the rotation of the inclined plates pushes against the liquid in the liquid passage chamber; under the reaction force of the liquid in the liquid passage chamber, the inclined plates drive the rotating sleeve to approach the pressure sensor along the axis, so that the scraper comes into contact with the pressure sensor and rotates, scraping the area of ​​the pressure sensor exposed in the liquid passage chamber.

[0008] Furthermore, a limiting ring that protrudes radially outward is provided at the end of the rotating sleeve away from the fixed sleeve, and both the baffle and the inclined plate are fixed on the side wall of the limiting ring; a first compression spring is provided on the outer sleeve of the rotating sleeve, one end of the first compression spring abuts against the end face of the fixed sleeve, and the other end abuts against the end face of the limiting ring; corresponding retaining rings and protrusions are provided at the ends where the fixed sleeve and the rotating sleeve are connected, respectively, to prevent the rotating sleeve from completely disengaging from the fixed sleeve.

[0009] Furthermore, the scraper is telescopically mounted on the baffle, and the extension length of the scraper is negatively correlated with the volume change of the liquid in the liquid passage chamber due to temperature changes.

[0010] Furthermore, a rotating ring is provided at the end of the rotating sleeve away from the fixed sleeve, and the rotating ring is rotatably disposed inside the rotating sleeve; a groove is provided on the baffle for the scraper to extend and retract, and a second compression spring is provided in the groove, one end of the second compression spring abutting against the bottom of the groove, and the other end abutting against the bottom end of the scraper; a pull rope is connected to the bottom end of the baffle, and the pull rope passes through the baffle, the rotating sleeve and the rotating ring are fixedly connected; an adjustment groove is provided on the inner side of the rotating sleeve opposite to the rotating ring, and a telescopic mechanism is provided on the outer side of the rotating ring, the telescopic mechanism is located in the adjustment groove and abuts against the groove wall; the telescopic mechanism extends and retracts according to the temperature change, pushing the rotating ring to rotate relative to the rotating sleeve, thereby pulling the pull rope, so that the scraper extends and retracts.

[0011] Furthermore, the walls of the rotating sleeve, the fixed sleeve, and the inclined plate are all densely covered with micropores.

[0012] The level also includes a circuit board; the circuit board is set in the ventilation cavity and connected to the pressure sensor and the data acquisition unit. It is used to convert the electrical signal collected by the pressure sensor into a digital signal, calculate the settlement value through a built-in algorithm, and transmit the settlement value to the data acquisition unit.

[0013] This invention also provides a method for monitoring deformation during steel structure hoisting, employing any of the aforementioned steel structure hoisting deformation monitoring devices, comprising the following steps: fixing a liquid tank to the steel structure to be hoisted; installing multiple levels at multiple detection points on the steel structure to be hoisted; controlling the injection of liquid from the liquid tank into the multiple levels and calibrating them; controlling the multiple levels to monitor the settlement value of each detection point in real time during the hoisting process, and transmitting the settlement value of each detection point to the data acquisition unit in real time; calculating the settlement difference between each detection point based on the settlement value of each detection point, and issuing an alarm when the settlement difference between any two detection points exceeds a preset safety range.

[0014] The beneficial effects of this invention are: The steel structure hoisting deformation monitoring device of this invention monitors the settlement values ​​at multiple detection points of the steel structure during hoisting by setting up multiple levels, thereby monitoring the synchronicity of the steel structure during hoisting. When the synchronicity of the steel structure is poor, the operator can make timely adjustments, thereby reducing the risk of deformation and stress concentration of the steel structure, and reducing safety hazards during construction. By setting a rotatable sleeve in the liquid passage chamber of the level and setting a baffle on the outer wall of the rotating sleeve, the liquid flow when the liquid passage chamber is injected pushes the baffle to drive the rotating sleeve to rotate, thereby consuming the kinetic energy of the liquid, reducing the generation of turbulence, reducing the bubble content in the liquid passage chamber, and thus improving the detection accuracy of the pressure sensor.

[0015] Furthermore, the steel structure hoisting deformation monitoring device of the present invention, by setting a scraper at the end of the baffle, so that when the baffle rotates, the scraper presses against the curved wall of the liquid passage chamber and scrapes the curved wall of the liquid passage chamber, thereby removing impurities and microscopic gas films on the curved wall of the liquid passage chamber. On the one hand, it reduces the bubble content and the possibility of bubble generation, and improves the detection accuracy of the pressure sensor; on the other hand, it reduces the time for bubbles to be discharged from the liquid, and improves work efficiency.

[0016] Furthermore, the steel structure hoisting deformation monitoring device of the present invention is equipped with a scraper that can extend and retract relative to the baffle, thereby using the extension and retraction of the scraper to finely adjust the size of the liquid storage space in the liquid passage chamber. The extension length of the scraper is set to be negatively correlated with the volume change of the liquid in the liquid passage chamber caused by temperature changes (i.e., when the liquid volume increases, the extension length of the scraper decreases; when the liquid volume decreases, the extension length of the scraper increases), thereby compensating for the volume change of the liquid in the liquid passage chamber caused by temperature changes, reducing the interference of temperature changes on the pressure sensor, and thus improving the detection accuracy of the level.

[0017] The steel structure hoisting deformation monitoring method of the present invention, since it is applied to the aforementioned steel structure hoisting deformation monitoring device, also possesses the beneficial technical effects of the aforementioned steel structure hoisting deformation monitoring device. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the invention in a detailed manner, by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. In the drawings: Figure 1 This is a structural schematic diagram of a steel structure hoisting deformation monitoring device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a level instrument according to an embodiment of the present invention; Figure 3This is an exploded view of a level instrument according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the housing of a level instrument according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the rotating sleeve of a level instrument according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the rotating ring of a level instrument according to an embodiment of the present invention; Figure 7 This is an assembly diagram of the rotating sleeve and rotating ring of a level instrument according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the level instrument from another angle according to an embodiment of the present invention; Figure 9 It is along Figure 8 A schematic cross-sectional view taken by the cutting line AA in the diagram; Figure 10 yes Figure 9 A schematic enlarged view of region B in the middle; Figure 11 This is a structural schematic diagram of a level instrument from another angle according to an embodiment of the present invention; Figure 12 It is along Figure 11 A schematic cross-sectional view cut off by the section line CC; Figure 13 yes Figure 12 A schematic enlarged view of region D in the middle; Figure 14 This is a flowchart illustrating a method for monitoring deformation during steel structure hoisting according to an embodiment of the present invention.

[0019] in: 100. Level; 110. Housing; 111. Front cover; 1111. Observation window; 112. Rear cover; 113. Signal connection port; 120. Liquid passage chamber; 121. Liquid passage hole; 122. Vent hole; 130. Air passage chamber; 131. Air passage hole; 140. Pressure sensor; 150. Rotating sleeve; 151. Baffle; 1511. Groove; 1512. Second compression spring; 1513. Pull rope; 152. Scraper; 153. Scraper plate; 154. Inclined plate; 155. Limiting ring; 156. First compression spring; 157. Protrusion; 158. Adjustment groove; 159. Micro-hole; 160. Rotating ring; 161. Telescopic mechanism; 162. Limiting block; 170. Fixed sleeve; 171. Snap ring; 180. Circuit board; 200. Liquid tank; 210. Vent pipe; 220. Liquid inlet pipe; 300. Data acquisition unit; 310. Signal connection cable. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0021] The terms "first" and "second" used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may be further included.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The following reference Figures 1 to 14 This invention describes a steel structure hoisting deformation monitoring device and method provided by the present invention.

[0024] This embodiment first provides a steel structure hoisting deformation monitoring device. The steel structure hoisting deformation monitoring device generally includes: multiple levels 100, a liquid tank 200, and a data acquisition unit 300.

[0025] Multiple levels 100 are installed at multiple detection points on the hoisted steel structure, and these detection points are on the same horizontal plane before hoisting begins. A liquid tank 200 stores liquid and is connected in series with the multiple levels 100 via multiple vent pipes 210 and multiple liquid inlet pipes 220. A data acquisition unit 300 is connected to the multiple levels 100 to receive and output the detection information from them.

[0026] Each level 100 generally includes: a housing 110, a pressure sensor 140, and a rotating sleeve 150. The housing 110 has a liquid passage chamber 120 and a venting chamber 130. Liquid passage holes 121 are provided on both sides of the liquid passage chamber 120, and venting holes 131 are provided on both sides of the venting chamber 130. A venting hole 122 is also provided at the top of the liquid passage chamber 120. The pressure sensor 140 is placed inside the housing 110 and located between the liquid passage chamber 120 and the venting chamber 130, isolating them. The rotating sleeve 150 is rotatably disposed within the liquid passage chamber 120. Multiple baffles 151 are fixedly disposed on the outer wall of the rotating sleeve 150, evenly distributed circumferentially, and the surface of each baffle 151 is arranged radially along the rotating sleeve 150. When liquid enters the liquid passage chamber 120, the baffle 151 rotates due to the impact of the liquid on the baffle 151, and drives the rotating sleeve 150 to rotate.

[0027] The liquid tank 200 is installed in the middle area of ​​the steel structure to be hoisted. Multiple detection points are set around the liquid tank 200 on the steel structure. Each level 100 is installed at one of these detection points. The liquid tank 200 is vertically higher than the level 100.

[0028] like Figure 1 As shown, multiple liquid inlet pipes 220 connect the liquid tank 200 and multiple levels 100 in series. Liquid from the liquid tank 200 is sequentially injected into the multiple levels 100 through the multiple liquid inlet pipes 220. The liquid inlet pipe 220 at the end of the last level 100 is sealed. Multiple vent pipes 210 connect the liquid tank 200 and the multiple levels 100 in series, thereby maintaining stable air pressure in the gas portion of the liquid tank 200 and the vent chambers 130 of the multiple levels 100, thus preventing air pressure changes from affecting the detection accuracy of the pressure sensor 140. The vent pipe 210 at the end of the last level 100 is connected to the outside air, ensuring that the air pressure in the gas portion of the liquid tank 200 and the vent chambers 130 of the multiple levels 100 are consistent with the outside atmospheric pressure. The data acquisition unit 300 is connected in series with the multiple levels 100 through multiple signal connection lines 310, used to receive and output the detection information of the multiple levels 100 in real time. The data collector 300 can be installed on the steel structure to be hoisted and transmits the detection information to the receiver held by the operator via wireless signal. A control valve (not shown in the figure) is provided at each vent 122 to close the vent 122 after the gas in the liquid passage chamber 120 is discharged, so that the liquid passage chamber 120 forms a sealed space.

[0029] like Figure 2 , Figure 9As shown, the housing 110 has a front cover 111 and a rear cover 112 at its front and rear ends, respectively. The front cover 111 closes the liquid passage chamber 120, and a transparent observation window 1111 is provided on the part of the front cover 111 opposite to the liquid passage chamber 120, so that the operator can observe the liquid state and the expulsion of air bubbles in the liquid passage chamber 120 at any time. The rear cover 112 closes the venting chamber 130 to prevent external dust from entering the venting chamber 130 and affecting the detection accuracy of the pressure sensor 140.

[0030] In this embodiment, multiple levels 100 are used to monitor the settlement values ​​at multiple detection points of the steel structure during hoisting, thereby monitoring the synchronicity of the steel structure during the hoisting process. When the synchronicity of the steel structure is poor (i.e., when the steel structure tilts or bends), the operators make timely adjustments, thereby reducing the risk of deformation and stress concentration in the steel structure, and reducing safety hazards during construction.

[0031] In some embodiments, a detection point can be set at each suspension point of the steel structure. In other embodiments, a ring of detection points can be set around the outermost perimeter of the steel structure to monitor the overall tilt of the steel structure. At least one ring of detection points can also be set between the outermost perimeter of the steel structure and the liquid tank to monitor the deflection deformation of the steel structure.

[0032] like Figures 2-7 As shown, a rotatable rotating sleeve 150 is installed inside the liquid passage cavity 120 of the level instrument 100, and a baffle 151 is installed on the outer wall of the rotating sleeve 150. When liquid is injected into the liquid passage cavity 120 (i.e., when liquid flows into the liquid passage cavity 120 from the liquid passage hole 121), the liquid will not directly impact the inner wall of the liquid passage cavity 120, but will impact the baffle 151, causing the baffle 151 to drive the rotating sleeve 150 to rotate. First, the baffle 151 rotates under the push of the liquid, which can consume the kinetic energy of the liquid, reduce the velocity gradient, and reduce the generation of turbulence. After the turbulence is weakened, the pressure fluctuation amplitude inside the liquid is reduced, and the probability of cavitation effect (vaporization caused by the local pressure of the liquid being lower than the saturated vapor pressure) and interface instability (such as air entrainment) is significantly reduced, thereby suppressing bubble generation. Second, the rotating baffle 151 can disperse the high-speed liquid flow into multiple small-flow streams, avoiding the liquid flow from directly impacting the wall surface, and reducing the amount of bubbles generated by violent liquid turbulence and air entrainment caused by the concentrated release of kinetic energy. In addition, the rotation of the baffle 151 can generate micro-vortices, which accelerate the rising and bursting of formed bubbles.

[0033] In this embodiment, a rotatable rotating sleeve 150 is provided in the liquid passage cavity 120 of the level instrument 100, and a baffle 151 is provided on the outer wall of the rotating sleeve 150. When liquid is injected into the liquid passage cavity 120, the liquid flow pushes the baffle 151 to drive the rotating sleeve 150 to rotate, thereby reducing the bubble content in the liquid passage cavity 120 and improving the detection accuracy of the pressure sensor 140.

[0034] like Figure 9 As shown, the liquid passage 121 is located in the lower half of the liquid passage cavity 120 to reduce the potential energy of liquid flowing into the liquid passage cavity 120 from the liquid passage 121, thereby reducing the possibility of bubble generation.

[0035] like Figures 3-6 As shown, the liquid passage cavity 120 is cylindrical, with its axis arranged horizontally. The axis of the rotating sleeve 150 is collinear with the axis of the liquid passage cavity 120, and the axis of the liquid passage hole 121 is perpendicular to the axis of the liquid passage cavity 120. A scraper 152 is provided at one end of the baffle 151 facing the curved wall of the liquid passage cavity 120, and the scraper 152 abuts against the curved wall of the liquid passage cavity 120. When the baffle 151 rotates, it drives the scraper 152 to scrape the curved wall of the liquid passage cavity 120.

[0036] Due to the storage environment, dust, residual liquid from the previous use, and other impurities easily accumulate on the walls of the liquid passage chamber 120 of the level instrument 100. These impurities readily attract gas, becoming nucleation points for bubbles and making it difficult for small bubbles to detach, thus affecting the detection accuracy of the pressure sensor 140. Furthermore, a microscopic gas film exists on the walls of the liquid passage chamber 120. After the liquid is filled, sufficient settling time (e.g., several hours or even overnight) is required for the microscopic gas film to accumulate into visible bubbles and rise to the surface, severely impacting work efficiency.

[0037] In this embodiment, a scraper 152 is provided at the end of the baffle 151. When the baffle 151 rotates, the scraper 152 presses against the curved wall of the liquid passage cavity 120 and scrapes the curved wall of the liquid passage cavity 120, thereby removing impurities and microscopic gas films on the curved wall of the liquid passage cavity 120. On the one hand, this reduces the bubble content and the possibility of bubble generation, improving the detection accuracy of the pressure sensor 140; on the other hand, it reduces the time for bubbles to be discharged from the liquid, improving work efficiency.

[0038] The end of the scraper 152 that abuts against the curved wall of the liquid passage cavity 120 is made of a flexible material, and the end of the scraper 152 is bent into a hook shape opposite to its rotation direction under the pressure of the curved wall of the liquid passage cavity 120.

[0039] In this embodiment, the end of the scraper 152 is made of a flexible material, so that the end of the scraper 152 is bent into a hook shape away from its rotation direction under the pressure of the curved wall of the liquid passage cavity 120. This makes the contact between the end of the scraper 152 and the curved wall of the liquid passage cavity 120 more tight, which not only improves the scraping effect, but also reduces the risk of wear on the curved wall of the liquid passage cavity 120.

[0040] In some preferred embodiments, the end of the scraper 152 is made of polytetrafluoroethylene (PTFE), which has low surface energy, good chemical stability, temperature resistance, flexibility, and abrasion resistance. PTFE has the lowest surface tension among solid materials and does not adhere to any substance. This characteristic effectively reduces liquid adhesion to the surface of the scraper 152 when scraping the curved wall of the liquid passage cavity 120, thereby reducing the possibility of microscopic gas film formation due to liquid residue. Good chemical stability and temperature resistance prevent damage to the scraper 152 due to chemical reactions and temperature changes, ensuring long-term reliability. Good flexibility adapts to the complex curved surface of the liquid passage cavity 120, ensuring close contact with the wall during scraping. Excellent abrasion resistance makes it resistant to wear even after long-term use, extending the service life of the scraper 152.

[0041] A fixed sleeve 170 is provided on the housing 110. One end of the fixed sleeve 170 is connected to the pressure sensor 140, and the other end is sleeved on the outer circumference of the rotating sleeve 150. The rotating sleeve 150 can rotate relative to the fixed sleeve 170 and can move axially relative to the fixed sleeve 170. A scraper 153 is provided at the end of the rotating sleeve 150 near the fixed sleeve 170. A plurality of inclined plates 154 evenly distributed circumferentially are also fixedly provided on the outer wall of the rotating sleeve 150. The inclined plates 154 are inclined in the direction of rotation from the end away from the fixed sleeve 170 to the other end. During the process of injecting liquid into the liquid passage chamber 120, after the inclined plates 154 begin to absorb water, the rotation of the inclined plates 154 pushes against the liquid in the liquid passage chamber 120. Under the reaction force of the liquid in the liquid passage chamber 120, the inclined plate 154 drives the rotating sleeve 150 to approach the pressure sensor 140 along the axis, so that the scraper plate 153 abuts against the pressure sensor 140 and rotates, scraping the area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120.

[0042] When liquid begins to be injected into the liquid passage chamber 120, the liquid pushes the baffle 151, causing the rotating sleeve 150 and the inclined plate 154 to rotate synchronously. As the liquid level in the liquid passage chamber 120 gradually increases, the rotating inclined plate 154 gradually begins to absorb water. When the inclined plate 154 rotates from the air section into the liquid section, it pushes the liquid axially towards the observation window 1111. Under the reaction force of the liquid, the inclined plate 154 drives the rotating sleeve 150 to move axially towards the pressure sensor 140 until the scraper 153 comes into contact with the pressure sensor 140. The rotation of the rotating sleeve 150 drives the scraper 153 to rotate synchronously, thereby scraping the area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120 to remove any impurities and microscopic gas films that may be attached to its surface. The scraper 153 is made of a flexible material (e.g., polytetrafluoroethylene) to avoid wear on the pressure sensor 140 during the scraping process.

[0043] The baffle 151 has a larger surface area than the inclined plate 154 to ensure that the impact force applied to the baffle 151 is greater than the impact force applied to the inclined plate 154 when the liquid flows radially through the liquid passage 120. The rotating sleeve 150 rotates at a higher speed under the influence of the baffle 151. The rotating sleeve 150 drives the inclined plate 154 to rotate synchronously. When the inclined plate 154 enters the liquid section from the air section, due to its higher rotational speed, the axial reaction force from the liquid on the inclined plate 154, moving closer to the pressure sensor 140, is greater than the axial impact force applied to the inclined plate 154 by the liquid flow moving away from the pressure sensor 140. This ensures that the inclined plate 154 drives the rotating sleeve 150 to move closer to the pressure sensor 140 as a whole.

[0044] Furthermore, as the liquid in the liquid passage chamber 120 is about to fill it, the force exerted by the liquid flow on the baffle 151 gradually decreases. Due to inertia, the rotating sleeve 150 continues to rotate. Because of the inclined plate 154, as the rotating sleeve 150 continues to rotate due to inertia, the inclined plate 154 pushes the liquid away from the pressure sensor 140 along the axial direction of the liquid passage chamber 120. Under the reaction force of the liquid, the inclined plate 154 drives the rotating sleeve 150 to rotate while simultaneously approaching the pressure sensor 140 along the axial direction. This allows the scraper plate 153 to scrape the area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120, eliminating any impurities and microscopic gas films that may be attached to its surface.

[0045] In this embodiment, by setting an inclined plate 154 and a scraper 153 on the rotating sleeve 150, the inclined plate 154 pushes against the liquid, bringing the rotating sleeve 150 closer to the pressure sensor 140. The scraper 153 then scrapes the area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120, removing surface impurities and microscopic gas films, further reducing the bubble content in the liquid passage chamber 120 and improving the detection accuracy of the pressure sensor 140.

[0046] Preferably, the shape of the scraper 153 is adapted to the shape of the pressure sensor 140 exposed in the fluid passage cavity 120, resulting in better scraping performance. For example... Figure 4 As shown, the wall surface of the pressure sensor 140 exposed in the liquid passage chamber 120 can be presented as a series of coaxially arranged protrusions, and the scraper plate 153 can be provided with corresponding matching grooves 1511. The scraper plate 153 can be cross-shaped, thereby reducing the liquid resistance when the rotating sleeve 150 moves axially and improving the scraping efficiency.

[0047] In some preferred embodiments, the baffle 151, the inclined plate 154, and the scraper plate 153 can be integrally formed with the rotating sleeve 150. The fixed sleeve 170 and the housing 110 can be integrally formed.

[0048] A radially outwardly protruding limiting ring 155 is provided at the end of the rotating sleeve 150 away from the fixed sleeve 170. Both the baffle 151 and the inclined plate 154 are fixed to the side wall of the limiting ring 155. A first compression spring 156 is fitted over the rotating sleeve 150. One end of the first compression spring 156 abuts against the end face of the fixed sleeve 170, and the other end abuts against the end face of the limiting ring 155. Corresponding retaining rings 171 and protrusions 157 are respectively provided at the ends where the fixed sleeve 170 and the rotating sleeve 150 connect, to prevent the rotating sleeve 150 from completely disengaging from the fixed sleeve 170.

[0049] In this embodiment, by installing a first compression spring 156 around the rotating sleeve 150, the rotating sleeve 150, after coming to a stop, can move away from the pressure sensor 140 under the elastic force of the first compression spring 156. The scraper 153 disengages from the pressure sensor 140, thereby avoiding interference from the scraper 153 to the detection of the pressure sensor 140 and ensuring the detection accuracy of the pressure sensor 140.

[0050] By providing a retaining ring 171 and a protrusion 157 at the ends where the fixed sleeve 170 and the rotating sleeve 150 connect, respectively, when the rotating sleeve 150 extends a certain distance relative to the fixed sleeve 170, the retaining ring 171 and the protrusion 157 engage with each other, thereby preventing the rotating sleeve 150 from completely detaching from the fixed sleeve 170 and ensuring the normal operation of the rotating sleeve 150 in subsequent uses. Furthermore, by limiting the maximum distance the rotating sleeve 150 can extend beyond the fixed sleeve 170, it is also possible to prevent the rotating sleeve 150 from contacting the observation window 1111, thus avoiding collision and wear between the rotating sleeve 150 and the observation window 1111.

[0051] The scraper 152 is telescopically mounted on the baffle 151, and the extension length of the scraper 152 is negatively correlated with the volume change of the liquid in the liquid passage chamber 120 due to temperature changes.

[0052] In this embodiment, the scraper 152 is designed to extend and retract relative to the baffle 151, thereby fine-tuning the size of the liquid storage space within the liquid passage chamber 120 by utilizing the extension and retraction of the scraper 152. The extension length of the scraper 152 is set to be negatively correlated with the volume change of the liquid within the liquid passage chamber 120 due to temperature variations (i.e., when the liquid volume increases, the extension length of the scraper 152 decreases; when the liquid volume decreases, the extension length of the scraper 152 increases). This compensates for the volume change of the liquid in the liquid passage chamber 120 caused by temperature variations, reducing the interference of temperature changes on the pressure sensor 140, and thus improving the detection accuracy of the level 100.

[0053] A rotating ring 160 is provided at the end of the rotating sleeve 150 away from the fixed sleeve 170, and the rotating ring 160 is rotatably disposed inside the rotating sleeve 150. A groove 1511 is provided on the baffle 151 for the extension and retraction of the scraper 152. A second compression spring 1512 is disposed within the groove 1511, with one end abutting against the bottom of the groove 1511 and the other end abutting against the bottom end of the scraper 152. A pull rope 1513 is connected to the bottom end of the baffle 151, and the pull rope 1513 passes through the baffle 151, the rotating sleeve 150, and is fixedly connected to the rotating ring 160. An adjustment groove 158 is provided on the inner side of the rotating sleeve 150 opposite to the rotating ring 160, and a telescopic mechanism 161 is provided on the outer side of the rotating ring 160. The telescopic mechanism 161 is located in the adjustment groove 158 and abuts against the groove wall of the adjustment groove 158. The telescopic mechanism 161 extends and retracts according to temperature changes. The push ring 160 rotates relative to the rotating sleeve 150, thereby pulling the pull rope 1513 and causing the scraper 152 to extend and retract.

[0054] like Figure 10As shown, the baffle 151 includes a plate body and a connecting rod. Both ends of the connecting rod are fixedly connected to the plate body and the limiting ring 155, respectively. One end of the inclined plate 154 is fixedly connected to the connecting rod and is offset from the plate body in the radial direction of the rotating sleeve 150. A groove 1511 is provided on the plate body, and a through hole communicating with the bottom of the groove 1511 is formed inside the connecting rod. An installation groove is provided on the outer wall of the rotating ring 160. The pull rope 1513 passes through the through hole to reach the installation groove and is fixed to the groove wall. An annular groove is formed on the inner wall of the rotating sleeve 150 in the area opposite to the limiting ring 155. The rotating ring 160 is rotatably disposed in the annular groove, and an adjusting groove 158 is disposed at the bottom of the annular groove. A limiting block 162 is provided on the rotating ring 160, and the limiting block 162 extends into the adjusting groove 158. One end of the telescopic mechanism 161 abuts against the groove wall of the adjusting groove 158, and the other end abuts against the limiting block 162.

[0055] In this embodiment, a telescopic mechanism 161 that expands and contracts according to temperature changes is provided on the rotating ring 160. The telescopic mechanism 161 expands and contracts to drive the rotating ring 160 to rotate relative to the rotating sleeve 150, thereby pulling the pull rope 1513 and causing the scraper 152 to move relative to the groove 1511, thereby changing the distance by which the scraper 152 extends out of the baffle 151. This design is not only simple and ingenious in structure, but also stable in operation.

[0056] In some preferred embodiments, the telescopic mechanism 161 may include two telescopic cylinders sleeved together, forming a sealed hydraulic chamber between the two cylinders. The liquid stored in the hydraulic chamber is the same as the liquid in the liquid tank 200, thereby making the volume change rate of the liquid in the hydraulic chamber and the volume change rate of the liquid in the fluid passage chamber 120 tend to be the same. The volume change of the liquid in the hydraulic chamber causes the telescopic cylinders to extend and retract, pushing the rotating ring 160 to rotate relative to the rotating sleeve 150, and ultimately causing the scraper 152 to extend and retract. By setting the size and number of scrapers 152, the magnitude of the volume change of the fluid passage chamber 120 caused by the extension and retraction of the scraper 152 is made close to or even the same as the magnitude of the volume change of the liquid in the fluid passage chamber 120 due to temperature, thereby improving the compensation effect and thus improving the detection accuracy of the level 100.

[0057] The walls of the rotating sleeve 150, the fixed sleeve 170, and the inclined plate 154 are all densely covered with micropores 159.

[0058] In this embodiment, microholes 159 are provided on the walls of the rotating sleeve 150, the fixed sleeve 170, and the inclined plate 154. When the liquid in the liquid passage chamber 120 is disturbed by external vibrations and sloshes, the liquid is affected by the damping effect of the microholes 159 as it passes through the walls of the rotating sleeve 150, the fixed sleeve 170, and the inclined plate 154. Under the damping effect of the microholes 159, the flow velocity of the liquid decreases, thereby reducing the sloshing amplitude of the liquid in the liquid passage chamber 120, thus reducing the interference to the pressure sensor 140 and improving the detection accuracy of the level 100.

[0059] The level instrument 100 may also generally include a circuit board 180. The circuit board 180 is disposed in the ventilation cavity 130 and connected to the pressure sensor 140 and the data acquisition unit 300. It is used to convert the electrical signal acquired by the pressure sensor 140 into a digital signal, calculate the settlement value through a built-in algorithm, and transmit the settlement value to the data acquisition unit 300.

[0060] like Figure 2 As shown, the housing 110 of the level instrument 100 is provided with a signal connection port 113. The signal connection port 113 is connected to the circuit board 180 and to the external data acquisition unit 300 via a signal connection cable 310. Before the hoisting begins, the circuit board 180 receives and records the initial pressure value detected by the pressure sensor 140. During the hoisting process, the circuit board 180 receives the real-time pressure value transmitted by the pressure sensor 140 in real time, subtracts the initial pressure value from the real-time pressure value, calculates the real-time settlement value of the detection point according to the liquid pressure formula, and then transmits the real-time settlement value to the data acquisition unit 300 in real time.

[0061] In this embodiment, the circuit board 180 is placed in the ventilation cavity 130, and the circuit board 180 is directly connected to the pressure sensor 140. This not only reduces electromagnetic interference in the signal transmission path and ensures the original accuracy of the pressure signal, but also reduces the number of external devices, making the overall device smaller and lighter, and reducing the difficulty and cost of installation and maintenance.

[0062] The specific working process of the steel structure hoisting deformation monitoring device provided by the present invention will be described in conjunction with the above embodiments: First, the liquid tank 200 is fixedly installed onto the steel structure to be hoisted, and multiple levels 100 are fixedly installed onto the steel structure at predetermined detection points. Then, the liquid tank 200, the multiple levels 100, and the data acquisition unit 300 are connected. After the liquid from the liquid tank 200 is sequentially injected into the multiple levels 100, the liquid inlet pipe 220 at the end of the last level 100 is sealed. Each liquid inlet chamber 120 is filled with liquid, and after the air in each liquid inlet chamber 120 is discharged through the vent hole 122, the vent hole 122 is sealed. Then, the steel structure is hoisted slowly. During the hoisting process, the data acquisition unit 300 receives the settlement values ​​detected by the multiple levels 100 in real time and calculates the settlement difference between each detection point. If the settlement difference between any two detection points exceeds the preset safety range, the data acquisition unit 300 will issue an alarm, prompting the operator to make timely adjustments.

[0063] During the process of liquid injection into the liquid passage chamber 120, as the liquid flows into the liquid passage chamber 120 from the liquid passage hole 121, the liquid impacts and pushes the baffle 151 to rotate, thereby causing the rotating sleeve 150 to rotate. When the baffle 151 rotates, the scraper 152 on the baffle 151 scrapes the curved wall of the liquid passage chamber 120 to remove impurities and microscopic gas films. When the liquid passage chamber 120 is about to be full, the kinetic energy of the liquid decreases, and the rotating sleeve 150 continues to rotate under inertia. As the rotating sleeve 150 continues to rotate, the inclined plate 154 pushes against the liquid, causing the rotating sleeve 150 to approach the pressure sensor 140 during rotation, so that the scraper 153 comes into contact with the area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120. The scraper 153 rotates synchronously with the rotating sleeve 150, thereby scraping the designated area of ​​the pressure sensor 140 exposed in the liquid passage chamber 120 to remove surface impurities and microscopic gas films. After the rotating sleeve 150 stops rotating, under the action of the first compression spring 156, the rotating sleeve 150 moves away from the pressure sensor 140.

[0064] Furthermore, when the temperature changes, the telescopic mechanism 161 extends and retracts with the temperature change, causing the rotating ring 160 to rotate relative to the rotating sleeve 150. This causes the baffle 151 to extend and retract via the pull rope 1513, thereby finely adjusting the size of the space inside the liquid passage chamber 120 to compensate for the volume change of the liquid in the liquid passage chamber 120 caused by the temperature change.

[0065] This embodiment also provides a method for monitoring deformation during steel structure hoisting, using any of the steel structure hoisting deformation monitoring devices described above, including the following steps: Step S100: Fix the liquid tank 200 to the steel structure to be hoisted, and install multiple levels 100 at multiple detection points on the steel structure to be hoisted.

[0066] In step S200, the liquid in the liquid tank 200 is injected into multiple levels 100 and calibrated.

[0067] In step S300, multiple level instruments 100 are controlled to monitor the settlement value of each detection point in real time during the hoisting process, and the settlement value of each detection point is transmitted to the data acquisition unit 300 in real time.

[0068] Step S400: Calculate the settlement difference between each detection point based on the settlement value of each detection point, and issue an alarm when the settlement difference between any two detection points exceeds a preset safety range. In some embodiments, the safety range can be preset to [-10mm, +10mm].

[0069] In this embodiment, multiple level instruments 100 are used to monitor multiple detection points in real time. When the settlement difference between any two detection points exceeds the preset safety range, an alarm is issued to remind the operators to make timely adjustments. This reduces the risk of deformation and stress concentration of the steel structure during hoisting, thereby reducing safety hazards.

[0070] In other embodiments, the steel structure hoisting deformation monitoring device can also be used for long-term health monitoring after the steel structure hoisting is completed. After the steel structure hoisting is completed (i.e., after the steel structure reaches the designated position and is installed), a liquid tank is installed on the reference surface, and then multiple levels are installed horizontally on the steel structure. After the levels are installed on the steel structure, the initial settlement value of the levels is obtained after the air bubbles in the levels are expelled and the liquid level stabilizes. If the steel structure experiences local deformation or overall tilting during long-term use, the detection data of the levels near the problem area will change accordingly. When the change in the settlement value received by the data acquisition device exceeds the preset installation range (e.g., the difference between the newly monitored settlement value and the initial settlement value is greater than 10 mm), the data acquisition device will issue an alarm to provide a risk warning.

[0071] Using a level instrument for long-term health monitoring of steel structures not only offers high accuracy and reliable data, but also enables the timely detection of subtle safety hazards, reducing safety risks. Furthermore, it boasts advantages such as strong adaptability and low testing costs.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A steel structure hoisting deformation monitoring device, characterized in that, include: Multiple levels are installed at multiple detection points on the hoisted steel structure, and the multiple detection points are on the same horizontal plane before the hoisting begins; A liquid tank containing liquid is connected in series with multiple levels via multiple vent pipes and multiple liquid inlet pipes. The data acquisition unit is connected to multiple levels and is used to receive and output the detection information of the multiple levels. Each of the aforementioned levels includes; The shell has a liquid passage chamber and a venting chamber inside. Liquid passage holes are provided on both sides of the liquid passage chamber, and venting holes are provided on both sides of the venting chamber. The top of the liquid passage chamber is also provided with an exhaust hole. A pressure sensor is placed inside the housing and located between the liquid passage chamber and the vent chamber, thus isolating the liquid passage chamber and the vent chamber. A rotating sleeve is rotatably disposed within the liquid passage cavity. Multiple baffles are fixedly disposed on the outer wall of the rotating sleeve and evenly distributed along the circumference. The surface of each baffle is disposed along the radial direction of the rotating sleeve. When liquid enters the liquid passage cavity, the baffles rotate with the impact of the liquid and drive the rotating sleeve to rotate.

2. The steel structure hoisting deformation monitoring device according to claim 1, characterized in that, The fluid passage cavity is cylindrical, with its axis arranged horizontally; the axis of the rotating sleeve is collinear with the axis of the fluid passage cavity, and the axis of the fluid passage hole is perpendicular to the axis of the fluid passage cavity. A scraper is provided at one end of the baffle facing the curved wall of the liquid passage cavity, and the scraper abuts against the curved wall of the liquid passage cavity; when the baffle rotates, it drives the scraper to scrape the curved wall of the liquid passage cavity.

3. The steel structure hoisting deformation monitoring device according to claim 2, characterized in that, The end of the scraper that abuts against the curved wall of the liquid passage cavity is made of a flexible material, and the end of the scraper, under the pressure of the curved wall of the liquid passage cavity, is in the shape of a hook opposite to its rotation direction.

4. The steel structure hoisting deformation monitoring device according to claim 2, characterized in that, A fixed sleeve is provided on the housing. The pressure sensor is fixed to one end of the fixed sleeve, and the other end is sleeved on the outer circumference of the rotating sleeve. The rotating sleeve can rotate relative to the fixed sleeve and can move axially relative to the fixed sleeve. A scraper is provided at the end of the rotating sleeve near the fixed sleeve; a plurality of inclined plates are also fixedly provided on the outer wall of the rotating sleeve, which are evenly distributed in the circumferential direction and are inclined from one end away from the fixed sleeve to the other end in the direction of rotation. During the process of injecting liquid into the liquid passage chamber, after the inclined plate begins to absorb water, the rotation of the inclined plate pushes against the liquid in the liquid passage chamber; under the reaction force of the liquid in the liquid passage chamber, the inclined plate drives the rotating sleeve to approach the pressure sensor along the axis, so that the scraper plate abuts against the pressure sensor and rotates, scraping the area of ​​the pressure sensor exposed in the liquid passage chamber.

5. The steel structure hoisting deformation monitoring device according to claim 4, characterized in that, The rotating sleeve is provided with a limiting ring that protrudes radially outward at one end away from the fixed sleeve. The baffle and the inclined plate are both fixed on the side wall of the limiting ring. A first compression spring is provided on the outer sleeve of the rotating sleeve. One end of the first compression spring abuts against the end face of the fixed sleeve, and the other end abuts against the end face of the limiting ring. The ends where the fixed sleeve and the rotating sleeve are connected are respectively provided with corresponding retaining rings and protrusions to prevent the rotating sleeve from completely disengaging from the fixed sleeve.

6. The steel structure hoisting deformation monitoring device according to claim 4, characterized in that, The scraper is retractably mounted on the baffle, and the extension length of the scraper is negatively correlated with the volume change of the liquid in the liquid passage chamber caused by temperature changes.

7. The steel structure hoisting deformation monitoring device according to claim 6, characterized in that, A rotating ring is provided at one end of the rotating sleeve away from the fixed sleeve, and the rotating ring is rotatably disposed inside the rotating sleeve; The baffle is provided with a groove for the scraper to extend and retract. A second compression spring is provided in the groove. One end of the second compression spring abuts against the bottom of the groove, and the other end abuts against the bottom end of the scraper. A pull rope is connected to the bottom end of the baffle. The pull rope passes through the baffle, the rotating sleeve, and is fixedly connected to the rotating ring. An adjustment groove is provided on the inner side of the rotating sleeve, opposite to the rotating ring. A telescopic mechanism is provided on the outer side of the rotating ring. The telescopic mechanism is located in the adjustment groove and abuts against the groove wall. The telescopic mechanism extends and retracts according to temperature changes, pushing the rotating ring to rotate relative to the rotating sleeve, thereby pulling the pull rope and causing the scraper to extend and retract.

8. The steel structure hoisting deformation monitoring device according to claim 4, characterized in that, The walls of the rotating sleeve, the fixed sleeve, and the inclined plate are all densely covered with micropores.

9. The steel structure hoisting deformation monitoring device according to claim 1, characterized in that, The level also includes: A circuit board, disposed in the ventilation cavity, is connected to the pressure sensor and the data acquisition unit. It is used to convert the electrical signal collected by the pressure sensor into a digital signal, calculate the settlement value through a built-in algorithm, and transmit the settlement value to the data acquisition unit.

10. A method for monitoring deformation during steel structure hoisting, characterized in that, The steel structure hoisting deformation monitoring device according to any one of claims 1 to 9 includes the following steps: Secure the liquid tank to the steel structure to be hoisted, and install multiple levels at multiple detection points on the steel structure to be hoisted. The liquid in the liquid tank is controlled to be injected into multiple levels, and then calibrated. Multiple levels are controlled to monitor the settlement value of each detection point in real time during the hoisting process, and the settlement value of each detection point is transmitted to the data acquisition unit in real time. The settlement difference between each detection point is calculated based on the settlement value of each detection point, and an alarm is issued when the settlement difference between any two detection points exceeds a preset safety range.

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