An intelligent control system for bridge rotation status

Abstract

A bridge rotation state intelligent control system includes a rotation ball joint device for bridge beam rotation, an attitude intelligent control adjustment mechanism for ensuring the bridge beam posture balance, an intelligent traction mechanism for driving the bridge beam rotation, and an intelligent state monitoring mechanism for monitoring and control; the attitude intelligent control adjustment mechanism includes a balancing counterweight device, a vertical load sensor, a vertical inclinometer and a stress strain gauge; the intelligent traction mechanism includes a beam centerline monitoring sensor, a hydraulic power assembly, a hydraulic oil source and a horizontal inclinometer; the state intelligent monitoring mechanism consists of a data collector and an intelligent control center, the intelligent control center controls the balance coordination device to move or stop on the beam surface according to the signal information of the vertical load sensor, the vertical inclinometer and the stress strain gauge, and the intelligent control center controls the hydraulic power assembly to drive the rotation ball joint to rotate or stop according to the signal information of the horizontal inclinometer and the beam centerline monitoring sensor.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge rotation, and in particular relates to an intelligent control system for the rotation state of a bridge. Background Art

[0002] Bridge rotation construction is a construction method widely used in crossing busy railways, highways, deep and fast-flowing canyons, and busy waterways. It provides reliable guarantees for the safety, quality, and progress of bridge construction under special conditions. Rotation construction technology is increasingly favored by bridge builders for its economy, convenience, and reliability.

[0003] Bridge rotation construction is a specialized construction method with high technical content. The state of the rotating bridge during the rotation process (rotation posture, rotation speed, and safety status) has always been the focus of attention during the rotation process.

[0004] The unbalanced moment caused by the construction error of the beam and the unbalanced moment caused by the unbalanced rotation traction force of the rotating bridge usually causes the change of the beam posture and balance state. If the beam posture is not controlled and adjusted in time, it may affect the smooth progress of the rotation construction and the safety of the beam.

[0005] The existing method for adjusting the posture of the beam usually uses a crane to lift the counterweight block to place it at the predetermined position of the beam end before rotation, and changes the center of gravity of the beam body to change the posture of the beam body to achieve the purpose of posture adjustment; the bridge rotation cannot control and adjust the state of the beam body during the rotation process. Once a serious tilt occurs during the rotation process of the beam body, threatening the safety of the bridge rotation, the rotation must be stopped and the beam body counterweight must be re-adjusted to adjust the beam body posture, resulting in the inability to complete the rotation within the window period and resulting in rotation failure.

[0006] The traction of bridge rotation usually uses hydraulic continuous jacks to tension the steel strands embedded in the turntable on the swivel to rotate the beam. Automatic control traction is used during the rotation process, and manual control and inching are used when approaching the rotation. Status monitoring during the rotation process (beam inclination, rotation angle, rotation distance) is measured by manually operating related instruments. The measurement task is large, the data is discontinuous, and the efficiency is low. It cannot reflect the status of the bridge during rotation in real time. When the beam approaches the end point, manual control inching and repetitive measurement procedures are cumbersome, with low accuracy and the risk of over-rotation.

[0007] Therefore, how to solve the above technical problems has become the direction of efforts of technical personnel in this field. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides an intelligent control system for the rotation state of a bridge.

[0009] In order to achieve the above technical purpose, the technical solution adopted is: an intelligent control system for the rotation state of a bridge, including a rotation ball joint device for the rotation of the bridge beam, an attitude intelligent control adjustment mechanism for ensuring the posture balance of the bridge beam, an intelligent traction mechanism for driving the rotation of the bridge beam, and an intelligent state monitoring mechanism for monitoring and control;

[0010] The swivel ball joint device comprises a swivel ball joint, a slideway, a support leg and a traction rope. The swivel ball joint with a rotating function is arranged below the bridge beam, a slideway is arranged on the outside of the swivel ball joint, a support leg for supporting the bridge beam is arranged on the slideway, and a traction rope is connected to the swivel ball joint;

[0011] The intelligent posture control and adjustment mechanism includes a balancing weight device arranged on the beam surface of the bridge beam, a vertical load sensor arranged on the swivel ball joint, and a vertical inclinometer and a stress strain gauge arranged on the support leg;

[0012] The intelligent traction mechanism includes a beam centerline monitoring sensor arranged on the beam body, a hydraulic power assembly connected to the free end of the traction rope and pulling, a hydraulic oil source for supplying oil to the hydraulic power assembly, and a horizontal angle meter arranged on the support leg;

[0013] The intelligent status monitoring mechanism is composed of a data collector and an intelligent control center. The signal input end of the data collector is respectively connected to the vertical load sensor, the vertical inclinometer, the stress strain gauge, the horizontal angle meter and the beam centerline monitoring sensor. The signal output end of the data collector is connected to the intelligent control center. The intelligent control center controls the balance coordination device to move or stop on the beam surface according to the signal information of the vertical load sensor, the vertical inclinometer and the stress strain gauge. The intelligent control center controls the hydraulic power assembly to drive the swivel ball joint to rotate or stop according to the signal information of the horizontal angle meter and the beam centerline monitoring sensor.

[0014] The hydraulic power assembly is a hydraulic jack or a hydraulic winding pile.

[0015] The swivel ball joint includes an upper ball joint, a lower ball joint and a pin shaft. The upper ball joint and the lower ball joint are arranged up and down, and their corresponding surfaces are matching spherical surfaces. A lower friction slide is provided on the spherical surface of the lower ball joint, and a pin shaft is installed in the center of the upper ball joint and the lower ball joint. Multiple vertical load sensors are evenly distributed on the spherical surface of the lower ball joint, and are radially evenly distributed in one or more layers of concentric circles with the center of the lower ball joint as the center of the circle. Multiple vertical load sensors are connected to a data collector located outside.

[0016] The upper end of the vertical load sensor is provided with a mounting groove, and a friction slide plate is arranged in the mounting groove.

[0017] The vertical load sensor is connected to the mounting end cover through a connecting bolt. The outer edge of the mounting end cover is provided with an external thread. The ball panel of the lower ball joint is provided with a threaded groove with an internal thread. The mounting end cover is connected to the ball panel of the lower ball joint through threaded cooperation. The height of the vertical load sensor is adjusted by rotating the mounting end cover.

[0018] The mounting end cover is provided with a through hole for leading out the signal lead wire of the vertical load sensor.

[0019] The mounting end cover is provided with an inner hexagonal groove which cooperates with the inner hexagonal plate hand and is used to adjust the position of the mounting end cover.

[0020] There are three stress strain gauges, which are arranged according to the normal line of the outer diameter of the support leg and are respectively arranged at 1 / 4, 1 / 2 and 3 / 4 of the distance from the middle of the support leg to the bottom surface.

[0021] The balancing counterweight device consists of two adjustment devices, which are respectively arranged on the two ends of the longitudinal direction of the bridge rotating beam. The adjustment device includes a track, a track trolley and a counterweight. The track is fixed on the surface of the bridge beam in the longitudinal direction of the bridge. A track trolley that can move along the track is installed on the track, and a counterweight is fixed on the track trolley.

[0022] The beneficial effects of the present invention are as follows: through the present invention, intelligent control adjustment of the bridge beam state and visualization of the rotation state are realized, which can effectively improve the risk prevention and control ability, rotation accuracy and rotation efficiency of the bridge rotation, meet the needs of the bridge rotation for intelligent control adjustment of the rotation state and visualization of the rotation state, and improve the safety of the bridge rotation construction and the experience of on-site observation.

[0023] Placing the vertical load sensor in the swivel ball joint realizes the monitoring of the vertical load of the swivel ball joint. The monitoring is more accurate and reasonable, which can effectively improve the risk prevention and control capabilities of the bridge rotation. The present invention meets the demand of the swivel bridge structure for the force-measuring swivel ball joint and improves the safety of the bridge rotation construction.

[0024] This device realizes the real-time monitoring function of stress and strain of the bridge rotation support device. Through the reasonable layout of the three stress and strain gauges, the stress state of the support device can be understood in time, and the risk prevention and control capabilities of the bridge rotation can be effectively improved.

[0025] The use of a balancing counterweight device can achieve real-time center of gravity adjustment, change the counterweight block hoisting can not be adjusted in real time, the adjustment is inaccurate and other shortcomings, to achieve intelligent control adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a partial schematic diagram of the present invention;

[0028] Figure 3 It is a top view schematic diagram of the lower ball joint of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a swivel ball joint of the present invention;

[0030] Figure 5 It is a schematic diagram of the connection of the vertical load sensor of the present invention;

[0031] Figure 6 It is a partial enlarged schematic diagram of the support leg of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the balancing weight device of the present invention from a top view;

[0033] In the figure: 1. Bridge beam, 2. Lower bearing platform, 3. Upper bearing platform, 4. Rotating ball joint, 5. Slide, 6. Support foot, 7. Data collector, 8. Towing rope, 9. Hydraulic power assembly, 10. Balance counterweight device, 11. Beam centerline monitoring sensor, 12. Hydraulic oil source, 13. Status display screen, 14. Intelligent control center, 15. Vertical load sensor, 16. Vertical inclinometer, 17. Horizontal angle meter, 18. Stress strain gauge. 19. Track, 20. Track trolley, 21. Counterweight block, 22. Install end cover, 23. Upper ball joint, 24. Lower ball joint, 25. Upper bearing platform, 26. Lower bearing platform, 27. Pin shaft, 28. Friction slide plate. DETAILED DESCRIPTION

[0034] The present invention will be described below in conjunction with the accompanying drawings; however, the present invention is not limited to this embodiment.

[0035] An intelligent control system for the rotation state of a bridge comprises a rotation ball joint device for rotating a bridge beam, an intelligent posture control adjustment mechanism for ensuring the posture balance of the bridge beam, an intelligent traction mechanism for driving the rotation of the bridge beam, and an intelligent status monitoring mechanism for monitoring and control.

[0036] like Figure 1 As shown, the swivel ball joint device includes a swivel ball joint 4, a slide 5, a support leg 6 and a traction rope 8. The swivel ball joint 4 with a rotating function is arranged below the bridge beam. A slide 5 is arranged on the outside of the swivel ball joint. A support leg 6 for supporting the bridge beam 1 is arranged on the slide. A traction rope 8 is connected to the upper support platform 3. The slide 5 and the support leg 6 constitute an anti-tilt mechanism of the system, which prevents the beam from overturning when the swivel bridge beam tilts. There are two traction ropes 8, which are respectively connected to the upper support platform 3 and wound in opposite directions. Through the pulling of the traction rope, the swivel ball joint 4 is used to drive the bridge beam to rotate horizontally.

[0037] The intelligent attitude control and adjustment mechanism includes a balancing weight device 10 arranged on the beam surface of the bridge beam, a vertical load sensor 15 arranged on the swivel ball joint, and a vertical inclinometer and a stress strain gauge 18 arranged on the support leg. The intelligent control center makes a comprehensive analysis and judgment based on the beam body inclination state collected by the vertical inclinometer 16, the vertical load distribution state provided by the vertical load sensor 15, and the support leg stress distribution state provided by the stress strain gauge 18, and controls the balancing weight device 10 to move on the beam surface, thereby changing the center of gravity position of the beam body to make the swivel ball joint 4 rotate vertically appropriately, so as to achieve the purpose of intelligent control and adjustment of the beam body attitude.

[0038] The intelligent traction mechanism includes a beam centerline monitoring sensor 11 arranged on the beam body, a hydraulic power assembly 9 connected to the free end of the traction rope 8 and pulling, a hydraulic oil source 12 for supplying oil to the hydraulic power assembly, and a horizontal angle meter 17 arranged on the support leg. The traction rope 8, the hydraulic power assembly and the hydraulic oil source 12 constitute the traction power mechanism for system rotation. The intelligent control center conducts comprehensive analysis and judgment based on the collected angle state and beam centerline state and controls the hydraulic power assembly 9 to move so that the swivel ball joint 4 rotates horizontally, thereby achieving the purpose of intelligent traction of beam rotation.

[0039] The intelligent status monitoring mechanism is composed of a data collector 7 and an intelligent control center 14. The signal input end of the data collector 7 is respectively connected to the vertical load sensor 15, the vertical inclinometer 16, the stress strain gauge 18, the horizontal angle meter 17 and the beam centerline monitoring sensor 11. The signal output end of the data collector is connected to the intelligent control center. The intelligent control center controls the balance coordination device to move or stop on the beam surface according to the signal information of the vertical load sensor, the vertical inclinometer and the stress strain gauge. The intelligent control center controls the hydraulic power assembly to drive the swivel ball joint to rotate or stop according to the signal information of the horizontal angle meter and the beam centerline monitoring sensor.

[0040] The hydraulic power assembly 9 is a hydraulic jack or a hydraulic winding pile, which realizes traction by winding and dragging.

[0041] like Figure 2 , Figure 3 , Figure 4As shown, the swivel ball joint includes an upper ball joint 23, a lower ball joint 24 and a pin 27. The upper ball joint 23 and the lower ball joint 24 are arranged up and down, and their corresponding surfaces are matching spherical surfaces. A lower friction slide is provided on the spherical surface of the lower ball joint 24, and a pin 27 is installed in the center of the upper ball joint 23 and the lower ball joint 24. A plurality of vertical load sensors 15 are evenly distributed on the spherical surface of the lower ball joint. A plurality of vertical load sensors 15 are evenly distributed on the spherical surface of the lower ball joint. The upper surface height of the vertical load sensor 15 cannot be higher than the lower friction slide. The arrangement is radially evenly distributed in one or more layers of concentric circles with the center of the lower ball joint as the center of the circle. The plurality of vertical load sensors are connected to a data collector located outside.

[0042] An installation groove is arranged at the upper end of the vertical load sensor, and a friction slide plate 28 is arranged in the installation groove.

[0043] like Figure 5 As shown, the vertical load sensor is connected to the mounting end cover 22 through connecting bolts. The outer edge of the mounting end cover 22 is provided with an external thread, and the ball panel of the lower ball joint is provided with a threaded groove with an internal thread. The mounting end cover 22 is connected to the ball panel of the lower ball joint through threaded cooperation. The height of the vertical load sensor is adjusted by rotating the mounting end cover.

[0044] The mounting end cover 22 is provided with a through hole for leading out the signal lead wire of the vertical load sensor, so as to facilitate leading out the signal lead wire of the vertical load sensor 15 .

[0045] The mounting end cap is provided with a hexagonal groove that cooperates with a hexagonal plate hand to adjust the mounting position of the end cap. The hexagonal groove can be arranged below the through hole and communicated with the through hole. The mounting position of the vertical load sensor 15 is adjusted by cooperating with a special hexagonal plate hand with an opening structure and the provided hexagonal groove. After all the installations are completed, the lower ball joint is cast in the lower support 26, and the upper ball joint is cast in the upper support 25.

[0046] The stress distribution law between the layers of the friction slide plate of the lower ball joint is studied through structural simulation analysis and a fitting function is formed. The vertical load sensor set at a specific point can collect the local load at the specific point. By measuring the local vertical load at each measuring point and fitting the data using the fitting function, the overall vertical load of the swivel ball joint can be calculated.

[0047] like Figure 6As shown, there are three stress strain gauges, which are arranged according to the normal of the outer diameter of the support leg and are respectively arranged at 1 / 4, 1 / 2 and 3 / 4 of the distance from the bottom surface of the middle part of the support leg. The signal output ends of the three stress strain gauges are connected to the signal acquisition end of the data acquisition instrument, that is, the three stress strain gauges transmit the collected stress information at three places to the data acquisition instrument. The stress strain gauges and the data acquisition instrument constitute the stress strain monitoring system of the support leg device, which can monitor the structural deformation and structural stress changes of the support leg device under the vertical load in real time, and provide a basis for the safety status assessment and analysis of the support leg device. The data acquisition instrument can display the stress information of each part, and an alarm device can be integrated therein. When a certain part of the signal value exceeds the theoretical value range, an alarm will be issued to realize real-time stress monitoring.

[0048] like Figure 7 As shown, the balancing counterweight device is two adjustment devices, which are respectively arranged on the two ends of the longitudinal direction of the bridge rotating beam. The adjustment device includes a track 19, a track trolley 20 and a counterweight block 21. The track is fixed on the surface of the bridge beam in the longitudinal direction of the bridge, and a track trolley that can move along the track is installed on the track, and a counterweight block is fixed on the track trolley.

[0049] The track 19 is reliably connected or anchored to the beam surface at a predetermined position; the track trolley 20 is placed on the track at a set position, and the track trolley 20 is provided with a position locking mechanism to enable the track trolley to be fixed to the track at a set slope; the counterweights 21 are distributed on the track trolley at a predetermined position and quantity and are reliably fixed.

[0050] The intelligent control center is a PLC control system, and the connection with the rail trolley 20 can be achieved by controlling the forward and reverse rotation of the motor in the rail trolley 20. When rotating forward, the rail trolley moves to one side, and when rotating reversely, the rail trolley 20 moves backward to the other side. When it is detected that the beam has reached a balanced state, the left and right rail trolleys are controlled to stop moving. When it is detected that the beam is in an unbalanced state, the rail trolley is controlled to move until the beam reaches a balanced state.

[0051] The intelligent control device is connected to the rail trolley via wire or wirelessly.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit or restrict the present invention. For researchers or technicians in this field, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection declared by the present invention.

Claims

1. An intelligent control system for bridge rotation state, characterized by: It includes a swivel ball joint device for the bridge beam rotation, an attitude intelligent control adjustment mechanism for ensuring the attitude balance of the bridge beam, an intelligent traction mechanism for driving the bridge beam rotation, and a state intelligent monitoring mechanism for monitoring and control; The swivel ball joint device comprises a swivel ball joint, a slideway, a support leg and a traction rope. The swivel ball joint with a swivel function is arranged below the bridge beam, a slideway is arranged on the outside of the swivel ball joint, a support leg for supporting the bridge beam is arranged on the slideway, and a traction rope is connected to the swivel ball joint; the swivel ball joint comprises an upper ball joint, a lower ball joint and a pin shaft, the upper ball joint and the lower ball joint are arranged up and down, and their corresponding surfaces are matching spherical surfaces, a lower friction slide plate is arranged on the spherical surface of the lower ball joint, and a pin shaft is installed at the center of the upper ball joint and the lower ball joint, and a plurality of vertical load sensors are evenly distributed on the spherical surface of the lower ball joint, and are evenly distributed radially in one or more layers of concentric circles with the center of the lower ball joint as the center of the circle, and the plurality of vertical load sensors are connected to a data collector located outside; The intelligent posture control and adjustment mechanism includes a balancing weight device arranged on the beam surface of the bridge beam, a vertical load sensor arranged on the swivel ball joint, and a vertical inclinometer and a stress strain gauge arranged on the support leg; The intelligent traction mechanism includes a beam centerline monitoring sensor arranged on the beam body, a hydraulic power assembly connected to the free end of the traction rope and pulling it, a hydraulic oil source for supplying oil to the hydraulic power assembly, and a horizontal angle meter arranged on the support leg; the balancing counterweight device is two adjustment devices, which are respectively arranged at the longitudinal ends of the bridge swivel beam body, and the adjustment device includes a track, a track trolley and a counterweight block. The track is fixedly arranged on the surface of the bridge beam body in the longitudinal direction of the bridge, and a track trolley that can move along the track is installed on the track, and a counterweight block is fixed on the track trolley; The intelligent status monitoring mechanism is composed of a data collector and an intelligent control center. The signal input end of the data collector is respectively connected to the vertical load sensor, the vertical inclinometer, the stress strain gauge, the horizontal angle meter and the beam centerline monitoring sensor. The signal output end of the data collector is connected to the intelligent control center. The intelligent control center controls the balance coordination device to move or stop on the beam surface according to the signal information of the vertical load sensor, the vertical inclinometer and the stress strain gauge. The intelligent control center controls the hydraulic power assembly to drive the swivel ball joint to rotate or stop according to the signal information of the horizontal angle meter and the beam centerline monitoring sensor.

2. The intelligent control system for bridge rotation state according to claim 1, characterized in that: The hydraulic power assembly is a hydraulic jack or a hydraulic winding pile.

3. The intelligent control system for bridge rotation state according to claim 1, characterized in that: The upper end of the vertical load sensor is provided with a mounting groove, and a friction slide plate is arranged in the mounting groove.

4. The intelligent control system for bridge rotation state according to claim 3, characterized in that: The vertical load sensor is connected to the mounting end cover through a connecting bolt. The outer edge of the mounting end cover is provided with an external thread. The ball panel of the lower ball joint is provided with a threaded groove with an internal thread. The mounting end cover is connected to the ball panel of the lower ball joint through threaded cooperation. The height of the vertical load sensor is adjusted by rotating the mounting end cover.

5. The intelligent control system for bridge rotation state according to claim 4, characterized in that: The mounting end cover is provided with a through hole for leading out the signal lead wire of the vertical load sensor.

6. The intelligent control system for bridge rotation state according to claim 4, characterized in that: The mounting end cover is provided with an inner hexagonal groove which cooperates with the inner hexagonal plate hand and is used to adjust the position of the mounting end cover.

7. The intelligent control system for bridge rotation state according to claim 1, characterized in that: There are three stress strain gauges, which are arranged according to the normal line of the outer diameter of the support leg and are respectively arranged at 1 / 4, 1 / 2 and 3 / 4 of the distance from the middle of the support leg to the bottom surface.

Images