Measuring tower for underwater installation of comb-type slideway cross beam and use method of measuring tower

Abstract

The invention provides a measuring tower for underwater installation of a comb-type slideway cross beam, which is characterized in that a tower main body is arranged along the vertical direction, the lower end of the tower main body is fixed on a steel rail at the seaside end part of the cross beam, the top end of the tower main body is provided with an operation platform, two groups of point measuring mechanisms are symmetrically arranged on the operation platform, and each group of point measuring mechanism comprises a water tank; the omnidirectional prism is fixed at the top end of the buoy, one end of the steel wire rope is connected with the end of the steel rail, the other end of the steel wire rope is connected with the buoy, a total station for reading horizontal coordinates of the omnidirectional prism is arranged on the shore side, and the point measuring mechanism is further provided with a composite anti-damping assembly for reducing stormy waves and tower body vibration. During use, after the steel wire rope is preliminarily positioned through observation, the gyroscope stabilizing module collects data, and deviation is converted and corrected based on the data, and installation coordinates are corrected. The problem that the measurement accuracy and stability of the measurement tower are affected by stormy waves and vibration is solved.

Description

Technical Field

[0001] This invention relates to the field of slideway engineering construction technology, and in particular to a measuring tower for underwater installation of a comb-type slideway grid beam and its usage method. Background Technology

[0002] Comb-type slipways are important facilities in shipbuilding and maintenance. They are widely used in port engineering due to their flexible slipway layout and gentle launching speed. The lattice beam, as the core load-bearing component of the comb-type slipway, directly determines the slipway's operational stability and service life through its installation accuracy. The installation of the lattice beam, especially in deep water, involves coordinated work between above-water erection and underwater operations, making it a critical link and technical challenge in slipway construction.

[0003] In the installation and construction of lattice beams in deep water, the industry currently uses measuring tower devices for installation and measurement. Existing measuring towers are typically connected to the rails at the seaside end of the lattice beam via a fixed base. An operating platform is installed at the top, on which a water tank, buoy, and measuring prism are arranged. The position of the underwater rails is transferred to the buoy using steel cables, and then the coordinates of the prism are measured using a total station on the shore. The actual position of the rails is then deduced, guiding the adjustment and installation of the lattice beams. The core logic of this measurement method is to establish a connection between the underwater rails and the shore-based measuring benchmark through the vertical tension of the steel cables, theoretically enabling precise positioning of underwater components.

[0004] However, the construction environment in deep water is complex, and existing measuring towers have significant accuracy deficiencies in practical applications. Deep water areas are constantly affected by wind and waves, which cause the measuring tower to sway horizontally and torsionally. This vibration is transmitted through the tower structure to the operating platform, affecting the stability of the water tank and pontoon. As the intermediate carrier for coordinate transmission, the pontoon is easily affected by wind and wave disturbances and tower vibrations, resulting in horizontal swaying and vertical bumps. This causes the wire rope to deviate or sway, making it impossible to maintain an ideal vertical position, leading to deviations in the positional transmission relationship between the pontoon and the rail. Summary of the Invention

[0005] The main objective of this invention is to provide a measuring tower for underwater installation using a comb-type slide beam and its method of use, thereby addressing the problem of wind, waves, and vibration affecting the accuracy and stability of the measuring tower.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a measuring tower for underwater installation of a comb-type slide beam, comprising a tower body arranged vertically, the lower end of which is fixed to the rail at the seaside end of the slide beam. An operating platform is provided at the top of the tower body, and two sets of measuring point mechanisms are symmetrically arranged on the operating platform. Each set of measuring point mechanisms includes a water tank fixed on the operating platform, a float inside the water tank, an omnidirectional prism fixed at the top of the float, one end of a steel wire rope connected to the end of the rail, and the other end connected to the float. A total station is provided on the extended line of the slide beam on the shore side for reading the horizontal coordinates of the omnidirectional prism. The measuring point mechanism is also equipped with a composite anti-damping component to reduce the influence of wind, waves and tower vibration on the measurement reference.

[0007] In the preferred embodiment, the main body of the tower includes a main structure formed by sequentially splicing together a bottom fixing part, several intermediate sections and a top section; The bottom fixing part is fixedly connected to the rail at the seaside end of the grid beam, the top section is fixedly connected to the operating platform, the number of intermediate sections is adapted to the installation water depth, and the intermediate sections, the bottom fixing part, and the top section are all detachable splices.

[0008] In the preferred embodiment, the main body of the tower includes vertically arranged columns, which are hollow structures, and steel wire ropes are installed running through the columns longitudinally. The top of the column extends through the water tank and into the inside of the float. An observation port is provided at the top of the column, facing the total station on the shore. A scale is provided along the length of the outer surface of the column below the observation port for the initial adjustment and calibration of the wire rope.

[0009] In the preferred embodiment, a guide sleeve extending downward is provided at the center of the bottom of the water tank, and a sealing sleeve is coaxially embedded inside the guide sleeve. The column is coaxially sleeved inside the sealing sleeve, and the inner diameter of the sealing sleeve is tightly fitted with the outer surface of the column, so as to achieve a sealed and fixed connection between the water tank and the column.

[0010] In the preferred embodiment, the water tank is a cylindrical structure with an open top, and the float is a vertical hollow annular component that fits the inner wall of the water tank. The float is fitted inside the water tank and floats on the surface of the liquid inside the tank; The omnidirectional prism is fixed to the center of the top of the pontoon by a horizontally set crossbar.

[0011] In the preferred embodiment, the buoy is provided with a buoyancy layer, an inner damping layer and an outer damping layer from the inside to the outside; The buoyancy layer is used to provide buoyancy for the entire pontoon; The inner damping layer and the outer damping layer are coaxially sleeved and fixed to the buoyancy layer through the annular connectors at the upper and lower ends, and annular gaps are formed between the inner damping layer and the buoyancy layer, and between the inner damping layer and the outer damping layer. Both the inner and outer damping layers have honeycomb-shaped flow guide holes on their walls.

[0012] In the preferred embodiment, the water tank is filled with a fluid-like damping medium, which fills the annular gaps between the layers of the float, forming a composite anti-damping structure together with the inner damping layer, the outer damping layer, and the flow guide holes.

[0013] In the preferred embodiment, a vibration isolation pad is also installed between the water tank and the operating platform.

[0014] In the preferred embodiment, a vibration damping connecting rod is also provided between the center of the crossbar at the top of the pontoon and the base of the omnidirectional prism; The two ends of the vibration damping connecting rod are connected to the center of the crossbar and the base of the omnidirectional prism through ball joints. The ball joints allow a small rotation angle of ±3° to absorb the vibration of the float. The omnidirectional prism base is equipped with a gyroscope stabilization module, which is used to detect the attitude deviation of the omnidirectional prism in real time.

[0015] A method for using a comb-type slideway grid beam underwater installation measurement tower, the method comprising: S1. Preliminary positioning and calibration: Observe the verticality of the wire rope through the observation port at the top of the column, and adjust the initial position of the wire rope in conjunction with the scale below the observation port to ensure that the wire rope is vertically laid along the central axis of the column, and preliminarily locate the approximate coordinates of the grid beam rail. S2. Reference parameter calibration: After the measurement tower is installed, start the gyroscope stabilization module to collect the initial attitude data of the omnidirectional prism in a stationary state. Use the initial attitude data as the attitude reference value, and at the same time record the initial state parameters of the damping medium in the water tank. S3. Real-time data acquisition: During the installation and measurement of the grid beam, the total station continuously reads the original horizontal coordinates of the omnidirectional prism, and the gyroscope stabilization module synchronously acquires the real-time attitude data of the omnidirectional prism, while recording the environmental response data related to wind and wave interference and tower vibration. S4. Deviation Conversion Analysis: Based on the difference between the real-time attitude data and the attitude reference value, combined with the total height of the measuring tower, the horizontal coordinate deviation of the omnidirectional prism is obtained through the coordinate conversion algorithm. The composite anti-damping component reduces the influence of wind waves and tower vibration on the attitude of the omnidirectional prism through the flow energy dissipation of the damping medium and the vibration absorption of the vibration reduction connecting rod and ball joint, thus assisting in correcting the deviation. S5. Precise Coordinate Correction: Substitute the horizontal coordinate deviation into the original horizontal coordinate data measured by the total station to calculate the corrected precise coordinates of the omnidirectional prism. Based on the vertical tension transmission principle of the wire rope, the precise coordinates of the omnidirectional prism correspond to the coordinates of the underwater rail. The actual coordinates of the lattice beam rail are then derived to guide the precise adjustment of the lattice beam.

[0016] This invention provides a measuring tower for underwater installation of a comb-type slide beam lattice and its usage method, effectively solving the problem of interference from wind, waves, and vibration on the measurement benchmark during underwater installation and measurement of comb-type slide beam lattice. This significantly improves the accuracy and stability of the measurement. By incorporating a composite anti-damping component in the measuring point mechanism, and leveraging the multi-layered structure design of the buoy and the synergistic effect of the damping medium, the impact of wind and waves and tower vibration can be effectively reduced. This suppresses the horizontal swaying and vertical turbulence of the buoy, ensuring that the wire rope maintains a stable vertical tension transmission state and avoiding deviations in position transmission. The design of the buoy, vibration-damping connecting rod, and ball joint further absorbs residual vibration, reduces the attitude shift of the omnidirectional prism, and provides a stable benchmark for coordinate measurement.

[0017] The main body of the tower adopts a modular splicing structure, which can flexibly adjust the overall height according to different installation water depths, adapting to various construction scenarios. The detachable connection between components facilitates transportation, assembly, and subsequent maintenance, reducing construction difficulty and costs. The hollow structure and guiding design of the columns, along with the observation port and scale, enable rapid calibration of the initial alignment of the wire rope, laying the foundation for subsequent accurate measurements and improving construction efficiency.

[0018] The omnidirectional prism's attitude detection and coordinate correction mechanism uses a gyroscope stabilization module to collect attitude data in real time and combines it with a coordinate conversion algorithm to accurately correct measurement deviations. Simultaneously, the symmetrically arranged measuring point mechanism forms a dual-benchmark verification, effectively avoiding the error risk of a single measuring point and significantly improving the accuracy of rail coordinate measurement. The sealed structure design between the water tank and the column prevents leakage of damping medium and intrusion of external seawater, ensuring the long-term stable operation of the composite anti-damping system. The installation of vibration isolation pads further blocks the transmission of tower vibration to the measuring point mechanism, strengthening the overall anti-interference capability.

[0019] The overall structure is compact and reasonable, with all components working together to ensure the stability and accuracy of the measurement process, as well as good practicality and adaptability. It can meet the installation and measurement needs of comb-type slide beams in complex environments such as deep water areas, provide reliable data support for the precise positioning of the beams, and thus ensure the operational stability and service life of the slide. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the layout of the measuring tower measuring device of the present invention; Figure 2 This is a side view of the measuring tower structure of the present invention; Figure 3 This is a main view of the measuring tower structure of the present invention; Figure 4 This is a top view schematic diagram of the measuring point mechanism of the present invention; Figure 5 This is a partial cross-sectional view of the measuring point mechanism of the present invention; Figure 6 This is a structural diagram of the pontoon of the present invention; Figure 7 This is a structural diagram of the connection between the pontoon and the omnidirectional prism of the present invention.

[0021] In the diagram: 1. Main body of the tower; 101. Bottom fixing part; 102. Middle section; 103. Top section; 2. Well beam; 3. Rail; 4. Operating platform; 401. Vibration isolation pad; 5. Water tank; 501. Guide sleeve; 502. Sealing sleeve; 6. Float; 601. Crossbar; 602. Buoyancy layer; 603. Inner damping layer; 604. Outer damping layer; 605. Guide hole; 7. Omnidirectional prism; 8. Wire rope; 9. Total station; 10. Column; 1001. Observation port; 1002. Scale; 11. Vibration damping connecting rod; 12. Ball joint; 13. Gyroscope stabilization module. Detailed Implementation

[0022] Example 1 like Figure 1-7 As shown, a measuring tower for underwater installation of a comb-type slide beam is provided. The main body 1 of the tower is arranged vertically, and its lower end is fixed to the rail 3 at the seaside end of the beam 2. The top of the main body 1 is provided with an operating platform 4. Two sets of measuring point mechanisms are symmetrically arranged on the operating platform 4. Each set of measuring point mechanisms includes a water tank 5 fixed on the operating platform 4. A float 6 is provided in the water tank 5. An omnidirectional prism 7 is fixed at the top of the float 6. One end of a steel wire rope 8 is connected to the end of the rail 3, and the other end is connected to the float 6. A total station 9 is provided on the extension line of the slide beam 2 on the shore side to read the horizontal coordinates of the omnidirectional prism 7. The measuring point mechanism is also provided with a composite anti-damping component to reduce the influence of wind, waves and tower vibration on the measurement reference.

[0023] This application discloses a comb-type sliding track beam underwater installation measurement tower. Its core design goal is to solve the problem that the measurement benchmark is easily affected by wind, waves and tower vibration in complex underwater environments. Through modular structure to adapt to different water depths, and with the help of composite anti-damping system and attitude stabilization mechanism, the accuracy of rail coordinate transmission is ensured.

[0024] The measuring tower is vertically arranged, with the main tower body 1 serving as the core support structure. Its lower end is directly fixed to the steel rail 3 at the seaside end of the grid beam 2, ensuring a rigid connection between the measurement benchmark and the rail. The operating platform 4 at the top provides a stable installation foundation for the measuring point mechanism. The two symmetrically arranged sets of measuring point mechanisms form a dual-benchmark verification, effectively mitigating the error risk of a single measuring point. In each set of measuring point mechanisms, the water tank 5 provides a stable floating environment for the buoy 6, which is connected to the underwater steel rail 3 via a steel cable 8, transmitting the spatial position of the rail to the omnidirectional prism 7 at the top. The shore-side total station 9 reads the prism coordinates to deduce the actual position of the rail. The composite anti-damping component reduces the interference of wind and wave impacts and tower vibrations on this transmission process, ultimately achieving high-precision measurement of the underwater grid beam installation. This device has the advantages of compact structure, convenient assembly and disassembly, and strong anti-interference capability, and can be widely adapted to comb-type slide construction scenarios at different water depths.

[0025] In the preferred embodiment, the main body 1 of the tower includes a main structure formed by sequentially splicing together a bottom fixing part 101, a number of intermediate sections 102 and a top section 103; The bottom fixing part 101 is fixedly connected to the rail 3 at the seaside end of the grid beam 2, the top section 103 is fixedly connected to the operating platform 3, the number of intermediate sections 102 is adapted to the installation water depth, and the intermediate sections 102, the bottom fixing part 101, and the top section 103 are all detachable splices.

[0026] The main body of the tower 1 adopts a detachable splicing structure consisting of a bottom fixing part 101, several intermediate sections 102, and a top section 103. The core reason for this design is that the water depth varies in the construction area, with a large span from shallow to deep water. The modular splicing allows for flexible adjustment of the tower height by adding or removing intermediate sections 102, eliminating the need to customize towers for different water depths and reducing construction costs. The rigid connection between the bottom fixing part 101 and the rail 3 ensures no relative displacement between the main body of the tower 1 and the measurement benchmark. The fixed connection between the top section 103 and the operating platform 4 ensures the installation stability of the measuring point mechanism. Adjacent components are spliced ​​with bolts or pins, facilitating on-site transportation, assembly, and subsequent maintenance, thus solving the problems of difficult transportation and low on-site installation efficiency of integral towers.

[0027] In the preferred embodiment, the main body 1 of the tower includes a vertically arranged column 10, the column 10 is a hollow structure, and the steel wire rope 8 is arranged longitudinally through the column 10; The top of the column 10 passes through the water tank 5 and extends into the inside of the float 6; The upper part of the column 10 is equipped with an observation port 1001, which faces the total station 9 on the shore. A scale 1002 is provided on the outer surface of the column 10 below the observation port 1001 along the length direction for the initial adjustment and calibration of the wire rope 8.

[0028] The main column 10 of the tower body 1 is designed as a hollow structure, serving as the key structural foundation for the coordinate transfer of the rail 3. The wire rope 8 runs longitudinally along the central axis of the column 10, ensuring that the wire rope remains vertical and preventing coordinate transfer errors caused by guide misalignment. The top of the column 10 passes through the water tank 5 and extends into the inside of the buoy 6, bringing the connection point between the wire rope 8 and the buoy 6 closer to the center of the buoy, further ensuring the verticality of the tension transfer. The observation port 1001 at the top of the column 10 faces the total station 9 on the shore, allowing construction personnel to directly observe the verticality of the wire rope 8. Combined with the scale 1002 below the observation port 1001, the initial alignment and calibration of the wire rope can be quickly completed. By adjusting the wire rope tension and fixed position, the wire rope 8 is aligned with the zero mark of the scale 1002, ensuring that the wire rope 8 is initially positioned along the central axis, laying the foundation for subsequent accurate measurements.

[0029] In the preferred embodiment, a guide sleeve 501 extending downward is provided at the center of the bottom of the water tank 5. A sealing sleeve 502 is coaxially embedded inside the guide sleeve 501. The column 10 is coaxially sleeved inside the sealing sleeve 502. The inner diameter of the sealing sleeve 502 is tightly fitted with the outer surface of the column 10, thereby achieving a sealed and fixed connection between the water tank 5 and the column 10.

[0030] The guide sleeve 501 at the center of the bottom of the water tank 5 and the sealing sleeve 502 form a sealing and guiding structure. Its design aims to prevent leakage of the damping medium inside the water tank 5, while also preventing external seawater intrusion that could affect the damping effect. The guide sleeve 501 provides an installation reference for the sealing sleeve 502, allowing it to be coaxially arranged with the column 10. The sealing sleeve 502 is made of flexible, wear-resistant material, and its inner diameter fits tightly against the outer surface of the column 10. While achieving a seal, it does not hinder the relative position adjustment of the column 10 and the water tank 5, nor does it generate additional vibration interference due to friction, ensuring the coordinated achievement of sealing and guiding functions.

[0031] In the preferred embodiment, the water tank 5 is a cylindrical structure with an open top, and the float 6 is a vertical hollow annular component that fits the inner wall of the water tank 5. The float 6 is installed inside the water tank 5 and floats on the liquid surface inside the water tank 5; The omnidirectional prism 7 is fixed to the center of the top of the pontoon 6 by a horizontally set crossbar 601.

[0032] The water tank 5 is designed as a cylindrical structure with an open top. The float 6 is a vertical, hollow, annular component that fits the inner wall of the water tank. This shape-matching design limits the horizontal displacement range of the float 6, preventing it from swaying or rotating significantly under the influence of wind and waves. The float 6 is fitted inside the water tank 5 and floats on the surface of the damping medium. A certain gap is reserved between the float 6 and the inner wall of the water tank 5 to ensure that the float 6 has sufficient floating space to adapt to water level changes and vibration buffering, while also effectively preventing the float 6 from colliding with the inner wall of the water tank 5 in an unstable state, thus avoiding secondary vibration. The omnidirectional prism 7 is fixed to the center of the top of the float 6 by a horizontal crossbar 601. The two ends of the crossbar 601 are fixedly connected to the inner wall of the float 6, ensuring that the omnidirectional prism 7 is always in the center position of the float 6 and remains coaxial with the tension transmission axis of the steel wire rope 8, so that the prism coordinates can accurately reflect the spatial position of the float 6.

[0033] In the preferred embodiment, the pontoon 6 is provided with a buoyancy layer 602, an inner damping layer 603 and an outer damping layer 604 from the inside to the outside. The buoyancy layer 602 is used to provide buoyancy for the entire pontoon 6; The inner damping layer 603 and the outer damping layer 604 are coaxially sleeved and fixed to the buoyancy layer 602 through the annular connectors at the upper and lower ends, and annular gaps are formed between the inner damping layer 603 and the buoyancy layer 602, and between the inner damping layer 603 and the outer damping layer 604. Both the inner damping layer 603 and the outer damping layer 604 have honeycomb-shaped flow guide holes 605 on their walls.

[0034] In the preferred embodiment, the water tank 5 is filled with a fluid-like damping medium, which fills the annular gaps between the layers of the float 6, and together with the inner damping layer 603, the outer damping layer 604 and the guide hole 605, forms a composite anti-damping structure.

[0035] The three-layer structure of the pontoon 6 is the core of the composite damping system. The buoyancy layer 602, the inner damping layer 603, and the outer damping layer 604, arranged sequentially from the inside out, each have their own function. The buoyancy layer 602 is made of high-density closed-cell foam plastic, and its core function is to provide stable buoyancy for the entire pontoon 6, ensuring that the pontoon 6 can always float on the surface of the damping medium liquid. The tension generated by the buoyancy keeps the steel wire rope 8 taut. The inner damping layer 603 and the outer damping layer 604 are made of rigid lightweight materials and are coaxially sleeved and fixed to the buoyancy layer 602 through the annular connectors at the upper and lower ends, forming two independent damping buffer layers. A 5-8mm annular gap is formed between the inner damping layer 603 and the buoyancy layer 602, and between the inner damping layer 603 and the outer damping layer 604. A honeycomb-shaped flow guide hole 605 with a diameter of 8-12mm and a hole spacing of 15-20mm is opened on the wall surface of both damping layers. This size design allows the damping medium to form an orderly flow in the gap. At the same time, the flow guide hole 605 realizes the exchange of medium between layers, prolongs the flow path of the damping medium, and increases the energy dissipation efficiency.

[0036] The damping medium filling water tank 5 is selected with a viscosity of 5000-8000 mPa. The silicone oil used is chosen because it possesses excellent chemical stability, resistance to seawater corrosion, and temperature adaptability. It maintains stable viscosity characteristics in underwater environments for extended periods and its damping effect is not diminished by temperature changes or seawater dilution. The damping medium fills the annular gaps between the layers of the buoy 6. When the buoy 6 is impacted by wind and waves, causing horizontal swaying or vertical vibration, the damping medium flows within the gaps and forms turbulence through the guide holes 605. The vibration energy is dissipated through the internal friction between medium molecules and turbulent loss, effectively suppressing the vibration amplitude of the buoy 6 and allowing it to quickly return to a stable state, ensuring that the tension transmission of the wire rope 8 is not affected by vibration.

[0037] In the preferred embodiment, a vibration isolation pad 401 is also provided between the water tank 4 and the operating platform 4.

[0038] The vibration isolation pad 503 installed between the water tank 5 and the operating platform 4 adopts a multi-layer rubber and steel plate vulcanized molding structure. Its design purpose is to block the transmission of vibration of the tower body 1 to the water tank 5. The vibration of the operating platform 4 mainly comes from wind vibration and structural resonance of the tower body 1. The vibration isolation pad 503 is continuously arranged along the bottom edge of the water tank. It absorbs vibration energy through the elastic deformation of the rubber layer, ensuring a stable floating environment for the float 6 and further enhancing the damping effect.

[0039] In the preferred embodiment, a vibration damping connecting rod 11 is also provided between the center of the crossbar 601 at the top of the float 6 and the base of the omnidirectional prism 7; The two ends of the vibration damping connecting rod 11 are connected to the center of the crossbar 601 and the base of the omnidirectional prism 7 respectively through ball joints 12. The ball joints 12 allow a small rotation angle of ±3° to absorb the vibration of the float 6. The omnidirectional prism 7 has a gyroscope stabilization module 13 inside its base, which is used to detect the attitude deviation of the omnidirectional prism 7 in real time.

[0040] The vibration-damping connecting rod 11 between the top crossbar 601 of the float 6 and the base of the omnidirectional prism 7 is made of hollow stainless steel tubing filled with polyurethane vibration-damping foam, which can effectively absorb the high-frequency vibrations transmitted by the float. The ball joints 12 at both ends of the vibration-damping connecting rod 11 adopt an inner and outer ball-and-socket mating structure. The inner ball socket is fixed to the connecting rod, and the outer ball socket is fixed to the crossbar 601 or the prism base. Wear-resistant bushings are embedded between the ball sockets and filled with grease, allowing only a small rotation angle of ±3°. The principle is to adapt to the small attitude changes of the float by the flexible rotation of the ball joint, avoiding the transmission of vibration to the prism through the rigid connection. At the same time, the grease can reduce the additional vibration caused by rotational friction. The gyroscope stabilization module 13 in the base of the omnidirectional prism 7 integrates a three-axis gyroscope and an attitude sensor, which can collect attitude data such as the roll angle and pitch angle of the prism in real time, with a sampling frequency of up to 100Hz. This provides accurate data support for subsequent attitude deviation correction and solves the problem of prism attitude deviation caused by the small vibration of the float 6.

[0041] Example 2 Further explanation in conjunction with Example 1, such as Figure 1-7 The structure shown illustrates a method for using a comb-type slideway grid beam underwater installation measurement tower, the method comprising: S1. Preliminary positioning and calibration: Observe the vertical status of the wire rope 8 through the observation port 1001 at the top of the column 10, and adjust the initial position of the wire rope 8 in conjunction with the scale 1002 below the observation port 1001 to ensure that the wire rope 8 is vertically laid along the central axis of the column 10, and preliminarily locate the approximate coordinates of the rail 3 of the grid beam 2. S2. Reference parameter calibration: After the measurement tower is installed, start the gyroscope stabilization module 13 to collect the initial attitude data of the omnidirectional prism 7 when it is in a static state. Use the initial attitude data as the attitude reference value, and at the same time record the initial state parameters of the damping medium in the water tank 5. S3. Real-time data acquisition: During the installation and measurement of the grid beam 2, the total station 9 continuously reads the original horizontal coordinates of the omnidirectional prism 7, and the gyroscope stabilization module 13 synchronously acquires the real-time attitude data of the omnidirectional prism 7, while recording the environmental response data related to wind and wave interference and tower vibration. S4. Deviation Conversion Analysis: Based on the difference between the real-time attitude data and the attitude reference value, combined with the total height of the measuring tower, the horizontal coordinate deviation of the omnidirectional prism 7 is obtained through the coordinate conversion algorithm. The composite anti-damping component reduces the influence of wind waves and tower vibration on the attitude of the omnidirectional prism 7 through the flow energy dissipation of the damping medium and the vibration absorption of the vibration reduction connecting rod 11 and the ball joint 12, and assists in correcting the deviation. S5. Precise Coordinate Correction: Substitute the horizontal coordinate deviation into the original horizontal coordinate data measured by the total station 9 to calculate the corrected precise coordinates of the omnidirectional prism 7. Based on the vertical tension transmission principle of the wire rope 8, the precise coordinates of the omnidirectional prism 7 correspond to the coordinates of the underwater rail 3. The actual coordinates of the rail 3 of the grid beam 2 are then derived to guide the precise adjustment of the grid beam 2.

[0042] In the deviation conversion analysis stage, the conversion between attitude deviation and coordinate deviation adopts the trigonometric function principle, the core basis of which is the geometric relationship between the total height H of the measuring tower and the attitude deviation angle of the prism. When the omnidirectional prism (7) generates a roll angle deviation and pitch angle deviation At this time, these angular deviations will create a projection offset in the horizontal direction, i.e., coordinate deviation. Through , The conversion formula accurately converts attitude deviation into horizontal coordinate deviation. The formula's rationality stems from the geometric principle of the side-angle relationship of a right triangle. The total height H of the measuring tower is a known fixed value, and the attitude deviation angle is precisely acquired through the gyroscope stabilization module 13, ensuring the accuracy of the conversion result. Simultaneously, the initial state parameters such as temperature and viscosity of the damping medium in water tank 5 are recorded. This is because the viscosity of the damping medium fluctuates slightly with temperature changes, thus affecting the damping effect. These parameters serve as environmental compensation coefficients, which can adjust the conversion weights in subsequent deviation corrections, avoiding correction errors caused by environmental factors.

[0043] The core logic of precise coordinate correction is based on the vertical tension transmission characteristics of the wire rope 8, which is the key theoretical support for the entire measurement method. When the pontoon 6 floats in the damping medium, the composite anti-damping component quickly reduces vibration interference, making the resultant force on the pontoon 6 in the horizontal direction approach zero. At this time, the tension of the wire rope 8 on the pontoon is transmitted entirely in the vertical direction, without any horizontal component interference. Since the lower end of the wire rope 8 is rigidly connected to the rail 3 and the upper end is fixed to the center of the pontoon 6, forming a rigid transmission link, the horizontal coordinates of the omnidirectional prism 7 and the horizontal coordinates of the rail 3 have a one-to-one correspondence. No additional complex conversion is required; the actual coordinates of the rail 3 can be directly mapped by correcting the prism coordinates through attitude deviation. The correction formulas are X=X1-ΔX and Y=Y1-ΔY, where (X1, Y1) are the original coordinates measured by the total station, and (ΔX, ΔY) are the coordinate deviations obtained by attitude deviation conversion. This formula can quickly obtain accurate rail coordinates to guide the adjustment of the grid beam.

[0044] The anti-damping component does not function independently in the measurement method, but rather forms a collaborative closed loop with data acquisition and deviation correction. The composite anti-damping component, through triple protection of energy dissipation by the damping medium, buffering by the vibration reduction structure, and blocking of vibration transmission, physically suppresses the vibration of the float 6 and prism, significantly reducing the fluctuation range of the attitude data acquired by the gyroscope stabilization module 13 and simplifying deviation conversion. Meanwhile, the real-time data acquisition from the gyroscope stabilization module 13 provides precise quantitative basis for coordinate correction, compensating for the inability of purely physical anti-damping to completely eliminate minute vibrations. This collaborative mode of physical vibration reduction combined with data correction not only reduces the amplitude of vibration interference through the anti-damping component but also corrects residual minute deviations through mathematical conversion, ensuring measurement accuracy and meeting the high-precision requirements of underwater installation of the comb-type sliding track beam.

[0045] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A comb-type sliding track lattice beam underwater installation measuring tower, characterized in that: The tower body (1) is arranged vertically, and its lower end is fixed on the rail (3) at the seaside end of the grid beam (2). The top of the tower body (1) is equipped with an operating platform (4). Two sets of measuring point mechanisms are symmetrically arranged on the operating platform (4). Each set of measuring point mechanisms includes a water tank (5) fixed on the operating platform (4). A float (6) is provided in the water tank (5). An omnidirectional prism (7) is fixed at the top of the float (6). One end of the wire rope (8) is connected to the end of the rail (3), and the other end is connected to the float (6). A total station (9) is provided on the extension line of the sliding track of the grid beam (2) on the shore side to read the horizontal coordinates of the omnidirectional prism (7). The measuring point mechanism is also equipped with a composite anti-damping component to reduce the influence of wind waves and tower vibration on the measurement benchmark.

2. The underwater measurement tower for a comb-type sliding track beam as described in claim 1, characterized in that: The main body of the tower (1) includes a main structure formed by sequentially splicing together a bottom fixing part (101), several intermediate sections (102) and a top section (103); The bottom fixing part (101) is fixedly connected to the rail (3) at the seaside end of the grid beam (2), the top section (103) is fixedly connected to the operating platform (3), the number of intermediate sections (102) is adapted to the installation water depth, and the intermediate sections (102) are detachable from each other, and the intermediate sections (102) are detachable from the bottom fixing part (101) and the top section (103).

3. The underwater measurement tower for comb-type sliding track beam as described in claim 2, characterized in that: The main body of the tower (1) includes a vertically arranged column (10), which is a hollow structure, and a steel wire rope (8) is installed longitudinally along the column (10); The top of the column (10) passes through the water tank (5) and extends into the inside of the float (6); The upper part of the column (10) is equipped with an observation port (1001), which faces the total station (9) on the shore. A scale (1002) is provided on the outer surface of the column (10) below the observation port (1001) along the length direction for the initial adjustment and calibration of the wire rope (8).

4. The underwater measurement tower for comb-type sliding track beam as described in claim 1, characterized in that: The bottom center of the water tank (5) is provided with a downward extending guide sleeve (501). A sealing sleeve (502) is coaxially embedded inside the guide sleeve (501). The column (10) is coaxially sleeved inside the sealing sleeve (502). The inner diameter of the sealing sleeve (502) is tightly fitted with the outer surface of the column (10), so as to achieve a sealed and fixed connection between the water tank (5) and the column (10).

5. The underwater measurement tower for a comb-type sliding track beam as described in claim 1, characterized in that: The water tank (5) is a cylindrical structure with an open top, and the float (6) is a vertical hollow annular component that fits the inner wall of the water tank (5). The float (6) is fitted inside the water tank (5) and floats on the liquid surface inside the water tank (5); The omnidirectional prism (7) is fixed to the center of the top of the pontoon (6) by a horizontally set crossbar (601).

6. The underwater measurement tower for a comb-type sliding track lattice beam as described in claim 1, characterized in that: The pontoon (6) is provided with a buoyancy layer (602), an inner damping layer (603) and an outer damping layer (604) from the inside to the outside. The buoyancy layer (602) is used to provide buoyancy for the entire pontoon (6); The inner damping layer (603) and the outer damping layer (604) are coaxially sleeved and fixed to the buoyancy layer (602) through the annular connectors at the upper and lower ends, and annular gaps are formed between the inner damping layer (603) and the buoyancy layer (602) and between the inner damping layer (603) and the outer damping layer (604). Both the inner damping layer (603) and the outer damping layer (604) have honeycomb-shaped flow guide holes (605) on their walls.

7. The underwater measurement tower for comb-type sliding track beam as described in claim 6, characterized in that: The water tank (5) is filled with a fluid damping medium. The damping medium is filled in the annular gap between the layers of the float (6) and together with the inner damping layer (603), the outer damping layer (604) and the flow guide hole (605) form a composite anti-damping structure.

8. The underwater measurement tower for a comb-type sliding track lattice beam as described in claim 6, characterized in that: A vibration isolation pad (401) is also provided between the water tank (4) and the operating platform (4).

9. The underwater measurement tower for comb-type slideway grid beam installation according to claim 1, characterized in that: A vibration damping connecting rod (11) is also provided between the center of the crossbar (601) at the top of the pontoon (6) and the base of the omnidirectional prism (7). The two ends of the vibration damping connecting rod (11) are connected to the center of the crossbar (601) and the base of the omnidirectional prism (7) respectively through ball joints (12). The ball joints (12) allow a small rotation angle of ±3° to absorb the vibration of the float (6). The omnidirectional prism (7) base is equipped with a gyroscope stabilization module (13) for real-time detection of attitude deviation of the omnidirectional prism (7).

10. The method of using a comb-type slide beam underwater installation measuring tower according to any one of claims 1-9, characterized in that: The method includes: S1. Preliminary positioning and calibration: Observe the vertical state of the wire rope (8) through the observation port (1001) at the top of the column (10), and adjust the initial position of the wire rope (8) in conjunction with the scale (1002) below the observation port (1001) to ensure that the wire rope (8) is vertically laid along the central axis of the column (10) and preliminarily position the approximate coordinates of the rail (3) of the grid beam (2); S2, Reference parameter calibration: After the measurement tower is installed, start the gyroscope stabilization module (13) to collect the initial attitude data of the omnidirectional prism (7) in a static state, use the initial attitude data as the attitude reference value, and record the initial state parameters of the damping medium in the water tank (5). S3. Real-time data acquisition: During the installation and measurement of the grid beam (2), the total station (9) continuously reads the original horizontal coordinates of the omnidirectional prism (7), and the gyroscope stabilization module (13) synchronously acquires the real-time attitude data of the omnidirectional prism (7), while recording the environmental response data related to wind and wave interference and tower vibration. S4. Deviation conversion analysis: Based on the difference between the real-time attitude data and the attitude reference value, combined with the total height of the measuring tower, the horizontal coordinate deviation of the omnidirectional prism (7) is obtained through the coordinate conversion algorithm. The composite anti-damping component reduces the influence of wind waves and tower vibration on the attitude of the omnidirectional prism (7) through the energy dissipation of the damping medium and the vibration absorption of the vibration reduction connecting rod (11) and ball joint (12), and assists in correcting the deviation. S5. Coordinate Precision Correction: Substitute the horizontal coordinate deviation into the original horizontal coordinate data measured by the total station (9) to calculate the corrected precise coordinates of the omnidirectional prism (7). Based on the vertical tension transmission principle of the wire rope (8), the precise coordinates of the omnidirectional prism (7) correspond to the coordinates of the underwater rail (3). The actual coordinates of the rail (3) of the grid beam (2) are then derived to guide the precise adjustment of the grid beam (2).

Images