Bridge construction girder and arch rib linear shape control device and method thereof

Abstract

This invention relates to the field of intelligent bridge construction technology, and discloses a bridge construction main beam and arch rib alignment control device, including a main beam, arch rib, cable, and controller housing. The arch rib is installed on both sides of the main beam, and the controller housing is installed on the main beam. The cable is installed on the controller housing and fixedly connected to the arch rib. An angle control unit and a tension control unit are installed inside the controller housing. This invention uses a control motor to drive a lead screw shaft to rotate. The rotation of the lead screw shaft causes a change in the position of a sliding sleeve, which in turn causes a guide sleeve to move synchronously. The guide sleeve contains a cable, which in turn moves the bottom of the cable. The connection point between the cable and the arch rib remains constant, causing the cable angle to shift, thus changing the shape. This mechanical operation simplifies the process and allows for direct remote control, making it suitable for widespread application.

Description

Technical Field

[0001] This invention belongs to the field of intelligent bridge construction technology, specifically, it relates to a device and method for adjusting the alignment of the main beam and arch rib of a bridge. Background Technology

[0002] In cable-stayed bridges and arch bridges constructed using cable-stayed couplings, cables are crucial components, playing a key role not only in mechanics but also directly impacting the bridge's design, construction, long-term performance, and safety. In cable-stayed bridges, cables are one of the main load-bearing components. Connected to the main girder and anchored by the towers, they transfer the load borne by the main girder to the towers and foundation, thus enabling large spans. During the cable-stayed coupling construction of arch bridges, cables play a critical temporary load-bearing role, assisting in the suspended connection of the arch rib segments and forming a stable structural system.

[0003] Currently, a weather station is designed on the main beam to monitor meteorological parameters of the bridge area and surrounding environment in real time, such as temperature, humidity and precipitation. Through data analysis from the weather station, the performance of the bridge under various climatic conditions can be evaluated and predicted. The total station is used to obtain the coordinates of key nodes and the overall alignment of the main beam or arch rib at each stage of construction. Force sensors are used to obtain the cable force.

[0004] Generally, the quality of cable-stayed bridge construction is crucial to the entire construction process of a cable-stayed or arch bridge, significantly affecting the alignment of the main girder and arch ribs. Currently, the cable adjustment processes and methods for common long-span cable-stayed bridges and arch bridges constructed using cable-stayed couplings are relatively primitive. Typically, construction monitoring personnel periodically measure cable stress and alignment data, relaying this information to designers for data analysis and instruction issuance, which is then carried out on-site by construction workers. This method is usually inefficient, delaying construction progress and even impacting construction quality. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A bridge construction main beam and arch rib alignment control device includes a main beam, an arch rib, a cable, and a controller housing. The arch rib is installed on both sides of the main beam. The controller housing is installed on the main beam. The cable is installed on the controller housing. The cable is fixedly connected to the arch rib. An angle control unit, a tension control unit, and a cable unlocking unit are installed inside the controller housing.

[0007] The angle adjustment unit includes a guide sleeve, a cable is inserted into the guide sleeve, a sliding sleeve is installed on the side wall of the guide sleeve, a lead screw shaft is movably screwed into the sliding sleeve, and one end of the lead screw shaft is movably installed on the inner wall of the controller housing, and the other end is installed with an adjustment motor.

[0008] The tension control unit includes a turntable, on which a spiral guide rail is provided. A slider is slidably arranged on the spiral guide rail. A third guide wheel is movably arranged on the surface of the slider. A connecting plate is fixedly arranged on the central shaft of the third guide wheel. A limit rod is inserted into the connecting plate, and both ends of the limit rod are installed through the side wall of the controller housing.

[0009] The cable unlocking unit includes a fixing block, a sleeve installed on the side wall of the fixing block, a positioning rod movably inserted inside the sleeve, a vertical rod installed at the bottom of the positioning rod, a push plate installed at the end of the vertical rod, a locking plate installed at the end of the push plate, a fixing seat penetrating through the outer wall of the locking plate, and a pull ring movably penetrating through the outer wall of the locking plate, the pull ring being fixedly connected to the cable.

[0010] In a preferred embodiment of the present invention, a maintenance door is movably installed on the controller housing, the maintenance door is connected to the internal cavity of the controller housing, a handle is installed on the maintenance door, a mounting plate is provided on the controller housing, a mounting hole is provided on the mounting plate, a bolt is provided inside the mounting hole, the bolt is screwed onto the main beam, and a total station is installed on the main beam.

[0011] In a preferred embodiment of the present invention, a guide groove is laterally provided on the controller housing, a guide sleeve is slidably disposed inside the guide groove, a guide hole is provided inside the guide sleeve, a cable is disposed through the guide hole, a pair of second guide wheels are symmetrically arranged at the bottom of the guide sleeve, a cable is movably inserted into the gap between the pair of second guide wheels, and a rubber cover is installed on the controller housing, the top of the rubber cover is movably inserted into the cable.

[0012] In a preferred embodiment of the present invention, a first guide wheel is movably disposed inside the controller housing. The outer walls of the first guide wheel, the second guide wheel, and the third guide wheel are all provided with grooves. The size of the grooves is adapted to the size of the cable. The cable is in contact with the side wall of the second guide wheel and the top of the first guide wheel.

[0013] In a preferred embodiment of the present invention, a drive motor is installed inside the controller housing, and a worm gear is installed at the output end of the drive motor. The worm gear is laterally distributed, and the central axis of the worm gear is movably disposed on the inner wall of the controller housing. A worm wheel is engaged at the top of the worm gear, and a rotating shaft is installed at the rotation center of the worm wheel. The end of the rotating shaft is fixedly connected to the central axis of the turntable.

[0014] In a preferred embodiment of the present invention, a slide block is installed at the bottom of the slider, a slide rod is movably disposed inside the slide block, mounting seats are installed at both ends of the slide rod, the end of the mounting seat is installed on a partition inside the controller housing, a return spring is installed on the outer wall of the slide rod, one side of the return spring is engaged with the mounting seat, the other side of the return spring is engaged with the slide block, and a fixing block is installed on the side wall of the slider.

[0015] In a preferred embodiment of the present invention, a baffle is slidably disposed inside the sleeve, a positioning rod is installed at the center of the baffle, a guide seat is movably inserted into the outer wall of the sleeve, the end of the guide seat is installed on the controller housing, an insert rod is movably inserted into the vertical rod, a connecting arm is installed on the side wall of the vertical rod, a pressure block is installed at the bottom of the connecting arm, and the pressure block slides on the controller housing.

[0016] In a preferred embodiment of the present invention, a pair of fixed seats are installed inside the controller housing. A pull ring is clamped inside the fixed seat. A slot is opened on the surface of the fixed seat located at the center. A retaining plate is inserted into the slot. A positioning sleeve is installed on the side wall of the fixed seat located on the outer side. A baffle is slidably disposed inside the positioning sleeve. A compression spring is clamped between the baffle and the baffle. A notch is opened at the top of the positioning sleeve. A vertical rod is slidably disposed inside the notch. A pressure sensor is installed on the inner wall of the pull ring and the retaining plate.

[0017] In a preferred embodiment of the present invention, a safety protection component is installed at the bottom of the controller housing. The safety protection component includes a jacket, which is movably inserted into an installation groove on the main beam. A positioning protrusion is movably inserted inside the jacket. An unlocking spring is installed between the bottom of the positioning protrusion and the transverse plate inside the jacket. A push rod is installed at the bottom of the positioning protrusion. A locking rod is movably inserted at the bottom of the jacket. The locking rod is inserted into a positioning groove at the bottom of the installation groove. A guide block is installed at the end of the locking rod. The top of the guide block is chamfered, and the chamfered part is slidably connected to the end of the push rod. A tension spring is installed on the guide block.

[0018] As a preferred embodiment of the present invention, a method for controlling the alignment of the main beam and arch rib in bridge construction includes the following steps:

[0019] Step 1: During construction, real-time and continuous monitoring data such as temperature and humidity of the main beam and arch ribs are sent to the computer unit. The computer system acquires the monitoring data, analyzes and judges it, and calculates the impact of the current environmental effects on the structure.

[0020] Step 2: Obtain the coordinates and overall alignment of key construction nodes of the main beam and arch rib at each stage using a total station, and send the results to a computer to analyze the deviation between the current alignment of the main beam and arch rib and the preset alignment.

[0021] Step 3: The computer analyzes the relationship between the current alignment deviation and environmental effects, calculates the coordinate adjustment of each monitoring point, and then calculates the stress and deformation adjustment of each cable;

[0022] Step 4: The computer sends the cable stress and deformation adjustment amount to the computer, which then sends the data that needs to be adjusted to the angle control unit and the tension control unit, thereby making precise adjustments to the cable stress and alignment.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. After adjusting the angle, first start the control motor. The control motor drives the lead screw shaft to rotate, which in turn causes the sliding sleeve to change position. The sliding sleeve then moves the guide sleeve synchronously. The guide sleeve contains a cable, which in turn moves the bottom of the cable. The connection point between the cable and the arch rib remains unchanged, causing the angle of the cable to shift and thus changing the shape. The angle adjustment is completed directly through the control motor, making the operation simpler.

[0025] 2. After adjusting the tension, rotate the turntable. The turntable causes the spiral guide rail on the surface to change position. The movement of the slider on the spiral guide rail is limited, causing the slider to move left and right as the spiral guide rail rotates. This drives the third guide wheel to pull the cable, controlling the cable tension and thus achieving the purpose of controlling the cable tension. The mechanical operation makes the operation simpler and can be directly controlled remotely.

[0026] 3. This invention is based on an intelligent cable adjustment system and can consider the impact of environmental factors at all times, significantly improving the efficiency of cable construction during the construction process. The introduction of the environmental monitoring system can continuously acquire environmental data and adjust the alignment of the cables and main beams or arch ribs at all times, transforming the traditional step-by-step adjustment (single-moment detection, feedback, and adjustment) into continuous control. This makes the construction process more reliable, the adjustment accuracy higher, and significantly improves construction efficiency and safety.

[0027] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0028] In the attached diagram:

[0029] Figure 1 A three-dimensional structural schematic diagram of a bridge construction main beam and arch rib alignment control device;

[0030] Figure 2 A three-dimensional drawing of the housing of a controller for a bridge construction main beam and arch rib alignment control device;

[0031] Figure 3 A cross-sectional view (I) of the controller housing of a bridge construction main beam and arch rib alignment control device;

[0032] Figure 4 A cross-sectional view (II) of the controller housing of a bridge construction main beam and arch rib alignment control device;

[0033] Figure 5 A device for adjusting the alignment of main beams and arch ribs in bridge construction. Figure 4 Sectional view of the middle sleeve;

[0034] Figure 6 A device for adjusting the alignment of main beams and arch ribs in bridge construction. Figure 4 Sectional view of the central positioning sleeve;

[0035] Figure 7 A cross-sectional view (III) of the controller housing of a bridge construction main beam and arch rib alignment control device;

[0036] Figure 8 A device for adjusting the alignment of main beams and arch ribs in bridge construction. Figure 7 Enlarged view of point A in the middle;

[0037] Figure 9 A device for adjusting the alignment of main beams and arch ribs in bridge construction. Figure 4 A bottom view;

[0038] Figure 10 This is a cross-sectional view of a safety protection component for a bridge construction main beam and arch rib alignment control device.

[0039] In the picture:

[0040] 101. Main beam; 1011. Mounting slot; 1012. Positioning slot; 1013. Total station; 102. Arch rib; 103. Cable; 1031. Pull ring; 104. Controller housing; 1041. Inspection door; 1042. Handle; 1043. Mounting plate; 1044. Mounting hole; 1045. Rubber cover; 1046. First guide wheel;

[0041] 200. Angle adjustment unit; 201. Lead screw shaft; 2011. Adjustment motor; 2012. Sliding sleeve; 202. Guide sleeve; 2021. Guide groove; 2022. Guide hole; 203. Second guide wheel;

[0042] 300. Tension control unit; 301. Turntable; 3011. Spiral guide rail; 302. Slider; 3021. Slide block; 303. Mounting base; 3031. Return spring; 3032. Slide rod; 304. Third guide wheel; 3041. Connecting plate; 3042. Limiting rod; 305. Drive motor; 3051. Worm gear; 3052. Worm wheel;

[0043] 400. Cable unlocking unit; 401. Fixing base; 4011. Slot; 402. Positioning sleeve; 4021. Notch; 403. Push plate; 4031. Clamping plate; 4032. Pressure sensor; 4033. Compression spring; 404. Vertical rod; 4041. Insert rod; 4042. Connecting arm; 4043. Pressure block; 405. Positioning rod; 4051. Baffle; 406. Sleeve; 4061. Fixing block; 4062. Guide seat;

[0044] 500, Safety protection component; 501, Clip; 502, Positioning protrusion; 5021, Push rod; 5022, Unlocking spring; 503, Guide block; 5031, Locking rod; 5032, Tension spring. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0046] Example 1:

[0047] like Figures 1 to 10 As shown, a bridge construction main beam and arch rib alignment control device includes a main beam 101, an arch rib 102, a cable 103, and a controller housing 104. The arch rib 102 is installed on both sides of the main beam 101. The controller housing 104 is installed on the main beam 101. The cable 103 is installed on the controller housing 104. The cable 103 is fixedly connected to the arch rib 102. An angle control unit 200, a tension control unit 300, and a cable unlocking unit 400 are installed inside the controller housing 104.

[0048] The angle adjustment unit 200 includes a guide sleeve 202, inside which a cable 103 is inserted. A sliding sleeve 2012 is installed on the side wall of the guide sleeve 202, and a lead screw shaft 201 is movably screwed into the sliding sleeve 2012. One end of the lead screw shaft 201 is movably mounted on the inner wall of the controller housing 104, and the other end is equipped with a control motor 2011. When the control motor is started, the lead screw shaft is rotated, which causes the sliding sleeve to change position. The sliding sleeve then moves the guide sleeve synchronously. Since the cable is installed inside the guide sleeve, the bottom of the cable can be moved. The connection point between the cable and the arch rib remains unchanged, thus causing the angle of the cable to shift, thereby changing the shape. The angle adjustment is completed directly through the control motor, making the operation simpler.

[0049] The tension control unit 300 includes a turntable 301, on which a spiral guide rail 3011 is provided. A slider 302 is slidably mounted on the spiral guide rail 3011. A third guide wheel 304 is movably mounted on the surface of the slider 302. A connecting plate 3041 is fixedly mounted on the central shaft of the third guide wheel 304. A limit rod 3042 is inserted into the connecting plate 3041, and both ends of the limit rod 3042 are installed through the side wall of the controller housing 104. Rotating the turntable causes the spiral guide rail on the surface to change position, and the slider on the spiral guide rail is limited in its movement position. This causes the slider to move left and right with the rotation of the spiral guide rail, driving the third guide wheel to pull the cable and control the cable tension. This achieves the purpose of controlling the cable tension. Through mechanical operation, the operation is simpler and can be directly controlled remotely.

[0050] The cable unlocking unit 400 includes a fixing block 4061. A sleeve 406 is installed on the side wall of the fixing block 4061. A positioning rod 405 is movably inserted inside the sleeve 406. A vertical rod 404 is installed at the bottom of the positioning rod 405. A push plate 403 is installed at the end of the vertical rod 404. A locking plate 4031 is provided at the end of the push plate 403. A fixing seat 401 is provided through the outer wall of the locking plate 4031, and a pull ring 1031 is movably inserted through the outer wall of the locking plate 4031. The pull ring 1031 is fixedly connected to the cable 103. One end of the cable can be unlocked through the locking plate 4031.

[0051] like Figure 1 and Figure 2 As shown, in a specific embodiment, a maintenance door 1041 is movably installed on the controller housing 104. The maintenance door 1041 communicates with the internal cavity of the controller housing 104. A handle 1042 is installed on the maintenance door 1041. A mounting plate 1043 is provided on the controller housing 104, and a mounting hole 1044 is provided on the mounting plate 1043. A bolt is installed inside the mounting hole 1044, and the bolt is screwed onto the main beam 101. A total station 1013 is mounted on the main beam 101. The maintenance door 1041 facilitates the subsequent insertion of cables, while the mounting plate 1043 allows the equipment to be installed on the main beam 101, improving the stability of the connection.

[0052] like Figure 3 , Figure 4 and Figure 7As shown, further, a guide groove 2021 is laterally formed on the controller housing 104. A guide sleeve 202 is slidably arranged inside the guide groove 2021. A guide hole 2022 is formed inside the guide sleeve 2022. A cable 103 is inserted through the guide hole 2022. A pair of second guide wheels 203 are symmetrically arranged at the bottom of the guide sleeve 202. The cable 103 is movably inserted into the gap between the pair of second guide wheels 203. A rubber cover 1045 is installed on the controller housing 104. The top of the rubber cover 1045 is movably inserted into the cable 103. A first guide wheel 1046 is movably arranged inside the controller housing 104. The outer walls of the first guide wheel 1046, the second guide wheel 203, and the third guide wheel 304 are all provided with grooves. The size of the grooves is adapted to the size of the cable 103. The cable 103 is in close contact with the side wall of the second guide wheel 203 and the top of the cable 103 is in close contact with the first guide wheel 1046. Start the control motor 2011, which drives the lead screw shaft 201 to rotate. The lead screw shaft 201 has a sliding sleeve 2012 installed on its surface. At this time, the sliding sleeve 2012 drives the guide sleeve 202 on its surface to move left and right along the guide groove 2021. The position of the guide hole 2022 inside the guide sleeve 202 changes, and the position of the cable 103 inside the guide hole 2022 changes. The position of the top of the cable 103 is fixed, while the position of the bottom of the cable 103 changes, causing the overall angle of the cable 103 to change to adapt to different situations. At the same time, the shape of the cable 103 also changes.

[0053] Example II:

[0054] The difference between the above embodiments and this embodiment is that: Figure 7 As shown, a drive motor 305 is installed inside the controller housing 104. A worm gear 3051 is installed at the output end of the drive motor 305. The worm gear 3051 is horizontally distributed, and its central shaft is movably mounted on the inner wall of the controller housing 104. A worm wheel 3052 is meshed at the top of the worm gear 3051. A rotating shaft is installed at the center of the worm wheel 3052, and the end of the rotating shaft is fixedly connected to the central shaft of the turntable 301. When adjusting the tension, the drive motor 305 is started first, which drives the worm gear 3051 at the end to rotate. The worm wheel 3052, which is mounted on the surface of the worm gear 3051, rotates synchronously. This rotation drives the turntable 301 to rotate through the central rotating shaft. Through the cooperation of the worm wheel 3052 and the worm gear 3051, the purpose of deceleration and labor saving is achieved, slowing down the rotation of the turntable 301. The worm wheel 3052 and the worm gear 3051 have a self-locking effect, making operation safer.

[0055] like Figure 7 and Figure 8As shown, in a specific embodiment, a slide block 3021 is installed at the bottom of the slider 302, and a slide rod 3032 is movably disposed inside the slide block 3021. Mounting seats 303 are installed at both ends of the slide rod 3032. The end of the mounting seat 303 is installed on a partition inside the controller housing 104. A return spring 3031 is installed on the outer wall of the slide rod 3032. One side of the return spring 3031 is engaged with the mounting seat 303, and the other side of the return spring 3031 is engaged with the slide block 3021. A fixing block 4061 is installed on the side wall of the slider 302. When the turntable 301 rotates, the position of the spiral guide rail 3011 on the surface of the turntable 301 changes. A slider 302 is slidably mounted on the spiral guide rail 3011. The movement of the slide block 3021 at the bottom of the slider 302 is limited, which eventually allows the slider 302 to move. The slide block 3021 at the bottom of the slider 302 slides along the slide rod 3032, compressing the return spring 3031. The return spring 3031 facilitates the subsequent reset operation.

[0056] like Figure 4 , Figure 5 and Figure 6 As shown, further, a baffle 4051 is slidably provided inside the sleeve 406, and a positioning rod 405 is installed at the center of the baffle 4051. A guide seat 4062 is movably inserted into the outer wall of the sleeve 406, and the end of the guide seat 4062 is installed on the controller housing 104. An insert rod 4041 is movably inserted into the vertical rod 404, and a connecting arm 4042 is installed on the side wall of the vertical rod 404. A pressure block 4043 is installed at the bottom of the connecting arm 4042, and the pressure block 4043 slides on the controller housing 104. When the slider 302 moves to the rightmost end, the fixed block 4061 on the slider 302 drives the sleeve 406 to move to the right. After the sleeve 406 moves a certain distance, it pushes the baffle 4051 and the positioning rod 405 to start moving to the right. The positioning rod 405 drives the bottom vertical rod 404 to move along the insertion rod 4041. The bottom of the vertical rod 404 drives the push plate 403 to move to the right, and the pressure block 4043 moves to the right at the same time.

[0057] Example 3:

[0058] The difference between the above embodiments and this embodiment is that: Figure 4 , Figure 6 and Figure 9As shown, a pair of fixed seats 401 are installed inside the controller housing 104. A pull ring 1031 is clamped inside the fixed seat 401. A slot 4011 is opened on the surface of the fixed seat 401 located in the center. A card plate 4031 is inserted into the slot 4011. A positioning sleeve 402 is installed on the side wall of the fixed seat 401 located on the outer side. A baffle 4051 is slidably disposed inside the positioning sleeve 402. A compression spring 4033 is clamped inside the baffle 4051. A notch 4021 is opened at the top of the positioning sleeve 402. A vertical rod 404 is slidably disposed inside the notch 4021. A pressure sensor 4032 is installed on the inner wall of the pull ring 1031 and on the card plate 4031. The push plate 403 drives the clamping plate 4031 to move to the right, separating the clamping plate 4031 from the inside of the clamping groove 4011 and separating it from the pull ring 1031 as a whole. This causes the fixed position of the pull ring 1031 and the bottom of the cable 103 to be unlocked, making it easier to disassemble the cable later. After the push plate 403 moves, it compresses the compression spring 4033, which facilitates the reset later.

[0059] like Figure 9 and Figure 10 As shown, in a specific embodiment, a safety protection component 500 is installed at the bottom of the controller housing 104. The safety protection component 500 includes a sleeve 501, which is movably inserted into an installation groove 1011 on the main beam 101. A positioning protrusion 502 is movably inserted inside the sleeve 501. An unlocking spring 5022 is installed between the bottom of the positioning protrusion 502 and the horizontal plate inside the sleeve 501. A push rod 5021 is installed at the bottom of the positioning protrusion 502. A locking rod 5031 is movably inserted at the bottom of the sleeve 501. The locking rod 5031 is inserted into a positioning groove 1012 at the bottom of the installation groove 1011. A guide block 503 is installed at the end of the locking rod 5031. The top of the guide block 503 is chamfered, and the chamfered part is slidably connected to the end of the push rod 5021. A tension spring 5032 is installed on the guide block 503. As the vertical rod 404 moves to the right, it drives the connecting arm 4042 and the pressure block 4043 to move to the right. The pressure block 4043 presses the positioning protrusion 502 downward, and the positioning protrusion 502 drives the push rod 5021 at the bottom to move downward. The push rod 5021 is inserted into the inclined surface of the guide block 503, which in turn drives the two guide blocks 503 to move towards the center, and the locking rod 5031 moves towards the center at the same time, so that the locking rod 5031 and the positioning groove 1012 are separated. Then the controller housing 104 can be disassembled.

[0060] This invention also discloses a method for controlling the alignment of the main beam and arch rib in bridge construction, the steps of which are as follows:

[0061] Step 1: During construction, real-time and continuous monitoring data such as temperature and humidity of the main beam 101 and arch rib 102 are sent to the computer unit. The computer system acquires the monitoring data, analyzes and judges it, and calculates the impact of the current environmental effects on the structure.

[0062] Step 2: Use a total station 1013 to obtain the coordinates and overall alignment of key construction nodes of main beam 101 and arch rib 102 at each stage, and send the results to a computer to analyze the deviation between the current alignment of the main beam and arch rib and the preset alignment.

[0063] Step 3: The computer analyzes the relationship between the current alignment deviation and environmental effects, calculates the coordinate adjustment of each monitoring point, and then calculates the stress and deformation adjustment of each cable 103;

[0064] Step 4: The computer sends the force and deformation adjustment amount of cable 103 to the computer, and the computer sends the data that needs to be adjusted to the angle control unit 200 and the tension control unit 300, thereby making precise adjustments to the cable force and alignment of cable 103.

[0065] The implementation principle of the bridge construction main beam and arch rib alignment control device and method in this embodiment is as follows:

[0066] Through the cooperation of the total station 1013 and the pressure sensor 4032, the signal is transmitted to the computer. The computer analyzes the signal and calculates the deviation between the main beam and arch rib alignment and the preset alignment. The difference is then sent to the angle control unit 200 and the tension control unit 300.

[0067] After the angle is adjusted, the control motor 2011 is started, which drives the lead screw shaft 201 to rotate. The lead screw shaft 201 has a sliding sleeve 2012 installed on its surface. At this time, the sliding sleeve 2012 drives the guide sleeve 202 on its surface to move left and right along the guide groove 2021. The position of the guide hole 2022 inside the guide sleeve 202 moves, and the position of the cable 103 inside the guide hole 2022 changes. The position of the top of the cable 103 is fixed, while the position of the bottom of the cable 103 moves, causing the overall angle of the cable 103 to change to adapt to different situations. At the same time, the shape of the cable 103 also changes.

[0068] After adjusting the tension, the drive motor 305 is started first. The drive motor 305 drives the worm 3051 at the end to rotate. A worm wheel 3052 is mounted on the surface of the worm 3051, and it rotates synchronously. This rotation drives the turntable 301 to rotate via the central axis. The cooperation between the worm wheel 3052 and the worm 3051 achieves speed reduction and labor saving, slowing the rotation of the turntable 301. Furthermore, the worm wheel 3052 and the worm 3051 have a self-locking effect, making operation safer. After the turntable 301 rotates, the position of the spiral guide rail 3011 on the surface of the turntable 301 changes, and the spiral guide... A slider 302 is slidably mounted on the rail 3011. The movement of the slide block 3021 at the bottom of the slider 302 is limited, which ultimately allows the slider 302 to move. The slide block 3021 at the bottom of the slider 302 slides along the slide rod 3032, compressing the return spring 3031. When the slider 302 moves to the left, it drives the third guide wheel 304 to move to the left, causing the distance between the third guide wheel 304 and the first guide wheel 1046 to increase. This makes the cable 103 taut, increasing the tension of the cable 103. When the slider 302 moves to the right, it can relax the cable 103, thus reducing the tension.

[0069] When slider 302 moves to the rightmost end, the fixing block 4061 on slider 302 drives sleeve 406 to move to the right. After sleeve 406 moves a distance, it pushes baffle 4051 and positioning rod 405 to move to the right. Positioning rod 405 drives bottom vertical rod 404 to move along insertion rod 4041. The bottom of vertical rod 404 drives push plate 403 to move to the right. Push plate 403 drives clamping plate 4031 to move to the right, separating clamping plate 4031 from the inside of clamping groove 4011 and separating it from pull ring 1031 as a whole. This unlocks the fixed position of pull ring 1031 and bottom of cable 103, making it convenient to disassemble the cable later. After push plate 403 moves, it compresses compression spring 4033, which facilitates reset later.

[0070] As the vertical rod 404 moves to the right, it drives the connecting arm 4042 and the pressure block 4043 to move to the right. The pressure block 4043 presses the positioning protrusion 502 downward, and the positioning protrusion 502 drives the push rod 5021 at the bottom to move downward. The push rod 5021 is inserted into the inclined surface of the guide block 503, which in turn drives the two guide blocks 503 to move towards the center. The locking rod 5031 moves towards the center at the same time, so that the locking rod 5031 and the positioning groove 1012 are separated. The internal tension spring 5032 is in a compressed state, which is convenient for later reset. After the locking rod 5031 and the positioning groove 1012 are separated, the controller housing 104 can be disassembled.

Claims

1. A bridge construction main beam and arch rib alignment control device, comprising a main beam (101), an arch rib (102), a cable (103), and a controller housing (104), characterized in that, The arch rib (102) is installed on both sides of the main beam (101). A controller housing (104) is installed on the main beam (101). A cable (103) is installed on the controller housing (104). The cable (103) is fixedly connected to the arch rib (102). An angle control unit (200), a tension control unit (300), and a cable unlocking unit (400) are installed inside the controller housing (104). The angle control unit (200) includes a guide sleeve (202), a cable (103) is inserted into the guide sleeve (202), a sliding sleeve (2012) is installed on the side wall of the guide sleeve (202), a lead screw shaft (201) is movably screwed into the sliding sleeve (2012), and one end of the lead screw shaft (201) is movably disposed on the inner wall of the controller housing (104), and a control motor (2011) is installed on the other end. The tension control unit (300) includes a turntable (301), on which a spiral guide rail (3011) is provided. A slider (302) is slidably arranged on the spiral guide rail (3011). A third guide wheel (304) is movably arranged on the surface of the slider (302). A connecting plate (3041) is fixedly arranged on the central shaft of the third guide wheel (304). A limit rod (3042) is inserted into the connecting plate (3041), and both ends of the limit rod (3042) are installed through the side wall of the controller housing (104). The cable unlocking unit (400) includes a fixing block (4061), a sleeve (406) is installed on the side wall of the fixing block (4061), a positioning rod (405) is movably inserted inside the sleeve (406), a vertical rod (404) is installed at the bottom of the positioning rod (405), a push plate (403) is installed at the end of the vertical rod (404), a locking plate (4031) is provided at the end of the push plate (403), a fixing seat (401) is provided through the outer wall of the locking plate (4031), and a pull ring (1031) is movably inserted through the outer wall of the locking plate (4031), and the pull ring (1031) is fixedly connected to the cable (103).

2. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, A maintenance door (1041) is movably installed on the controller housing (104). The maintenance door (1041) is connected to the internal cavity of the controller housing (104). A handle (1042) is installed on the maintenance door (1041). A mounting plate (1043) is provided on the controller housing (104). A mounting hole (1044) is provided on the mounting plate (1043). A bolt is provided inside the mounting hole (1044). The bolt is screwed onto the main beam (101). A total station (1013) is installed on the main beam (101).

3. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, The controller housing (104) has a guide groove (2021) opened laterally. A guide sleeve (202) is slidably arranged inside the guide groove (2021). A guide hole (2022) is opened inside the guide sleeve (2022). A cable (103) is inserted through the guide hole (2022). A pair of second guide wheels (203) are symmetrically arranged at the bottom of the guide sleeve (202). A cable (103) is movably inserted into the gap between the pair of second guide wheels (203). A rubber cover (1045) is installed on the controller housing (104). The top of the rubber cover (1045) is movably inserted into the cable (103).

4. The bridge construction main beam and arch rib alignment control device according to claim 3, characterized in that, The controller housing (104) is movably provided with a first guide wheel (1046). The outer walls of the first guide wheel (1046), the second guide wheel (203) and the third guide wheel (304) are all provided with grooves. The size of the grooves is adapted to the size of the cable (103). The cable (103) is in close contact with the side wall of the second guide wheel (203). The top of the cable (103) is in close contact with the top of the first guide wheel (1046).

5. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, The controller housing (104) is equipped with a drive motor (305). A worm gear (3051) is installed at the output end of the drive motor (305). The worm gear (3051) is laterally distributed, and the central axis of the worm gear (3051) is movably disposed on the inner wall of the controller housing (104). A worm wheel (3052) is meshed at the top of the worm gear (3051). A rotating shaft is installed at the rotation center of the worm wheel (3052), and the end of the rotating shaft is fixedly connected to the central axis of the turntable (301).

6. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, The bottom of the slider (302) is equipped with a slide base (3021), and a slide rod (3032) is movably connected inside the slide base (3021). Mounting seats (303) are installed at both ends of the slide rod (3032). The end of the mounting seat (303) is installed on the partition inside the controller housing (104). A return spring (3031) is installed on the outer wall of the slide rod (3032). One side of the return spring (3031) is engaged with the mounting seat (303), and the other side of the return spring (3031) is engaged with the slide base (3021). A fixing block (4061) is installed on the side wall of the slider (302).

7. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, A baffle (4051) is slidably disposed inside the sleeve (406), and a positioning rod (405) is installed at the center of the baffle (4051). A guide seat (4062) is movably inserted into the outer wall of the sleeve (406), and the end of the guide seat (4062) is installed on the controller housing (104). A plug rod (4041) is movably inserted into the vertical rod (404), and a connecting arm (4042) is installed on the side wall of the vertical rod (404). A pressure block (4043) is installed at the bottom of the connecting arm (4042), and the pressure block (4043) slides on the controller housing (104).

8. The bridge construction main beam and arch rib alignment control device according to claim 7, characterized in that, The controller housing (104) has a pair of fixed seats (401) installed inside. A pull ring (1031) is clamped inside the fixed seat (401). A slot (4011) is opened on the surface of the fixed seat (401) located in the center. A card plate (4031) is inserted into the slot (4011). A positioning sleeve (402) is installed on the side wall of the fixed seat (401) located on the outside. A baffle (4051) is slidably disposed inside the positioning sleeve (402). A compression spring (4033) is clamped inside the baffle (4051). A notch (4021) is opened at the top of the positioning sleeve (4021). A vertical rod (404) is slidably disposed inside the notch (4021). A pressure sensor (4032) is installed on the inner wall of the pull ring (1031) and the card plate (4031).

9. The bridge construction main beam and arch rib alignment control device according to claim 1, characterized in that, A safety protection component (500) is installed at the bottom of the controller housing (104). The safety protection component (500) includes a sleeve (501). The sleeve (501) is movably inserted into an installation groove (1011) on the main beam (101). A positioning protrusion (502) is movably inserted inside the sleeve (501). An unlocking spring (5022) is installed between the bottom of the positioning protrusion (502) and the cross plate inside the sleeve (501). 2) A push rod (5021) is installed at the bottom. A locking rod (5031) is movably inserted into the bottom of the sleeve (501). The locking rod (5031) is inserted into the positioning groove (1012) opened at the bottom of the mounting groove (1011). A guide block (503) is installed at the end of the locking rod (5031). The top of the guide block (503) is chamfered, and the chamfered part is slidably connected to the end of the push rod (5021). A tension spring (5032) is installed on the guide block (503).

10. A method for adjusting the alignment of the main beam and arch rib during bridge construction, characterized in that, The following steps are taken when applying the bridge construction main beam and arch rib alignment control device as described in any one of claims 1 to 9: Step 1: During construction, the temperature and humidity monitoring data of the main beam (101) and arch rib (102) are continuously monitored in real time and sent to the computer unit. The computer system obtains the monitoring data, analyzes and judges it, and calculates the impact of the current environmental effects on the structure. Step 2: Use a total station (1013) to obtain the coordinates and overall alignment of key construction nodes of the main beam (101) and arch rib (102) at each stage, and send the results to the computer to analyze the deviation between the current alignment of the main beam and arch rib and the preset alignment. Step 3: The computer analyzes the relationship between the current alignment deviation and the environmental effect, calculates the coordinate adjustment of each monitoring point, and then calculates the stress and deformation adjustment of each cable (103); Step 4: The computer sends the force and deformation adjustment amount of the cable (103) to the angle control unit (200) and the tension control unit (300) to precisely adjust the cable force and shape of the cable (103).

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