CN213896806U - Bridge rotation control system based on Beidou navigation system - Google Patents
Bridge rotation control system based on Beidou navigation system Download PDFInfo
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- CN213896806U CN213896806U CN202022910701.2U CN202022910701U CN213896806U CN 213896806 U CN213896806 U CN 213896806U CN 202022910701 U CN202022910701 U CN 202022910701U CN 213896806 U CN213896806 U CN 213896806U
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Abstract
The utility model belongs to bridge construction field, concretely relates to bridge control system's application method that turns based on big dipper navigation system, control system includes big dipper signal receiver, controller and deviation rectification driver. The application method of the control system comprises the following steps: 1) setting an early warning threshold value and a deviation correction value of a pier deviation angle; 2) starting a control system; 3) starting to rotate; 4) monitoring the progress of the rotation; 5) an alarm is given; 6) reducing the deflection angle of the pier; 7) stopping alarming; 8) and finishing the rotation. The utility model is used for realize that the bridge turns automatic control, automatic deviation rectification and automatic stall in the work progress to can embody the informationization of job site, show the safety supervision efficiency who improves the job site.
Description
Technical Field
The utility model belongs to bridge construction field, concretely relates to bridge control system that turns based on big dipper navigation system.
Background
The swivel system of a large bridge is generally divided into an upper part and a lower part, the upper rotary table comprises an upper spherical hinge and a supporting leg, the lower rotary table comprises a lower spherical hinge, an annular slideway, a sand bucket, a swivel driving system, a bearing platform and the like, and the two parts are connected and positioned through a steel pin shaft to form a complete swivel system. The swivel construction of a large bridge basically rotates around a spherical hinge, and the overturning moment is supported and balanced through the rolling of the periphery of the spherical hinge. In the actual turning process, due to adverse conditions such as wind influence, manufacturing errors of the spherical hinge, uneven turning mass rigidity, prestress deviation and the like, the structural gravity center can deviate from the center of the spherical hinge, the support leg on the inclined side is in contact with the slide way for supporting, at the moment, the turning structure generates rigid displacement, and the support leg is an overturning fulcrum.
The core structure participating in the swivel process is not allowed to have an unorganized movement, and even a small lateral rotation needs to be strictly controlled. In the past, most researches adopt an analytical method or combined finite element modeling, but the methods are not combined with site construction monitoring.
SUMMERY OF THE UTILITY MODEL
To the technical problem that above-mentioned exists, the utility model provides a bridge control system that turns based on big dipper navigation system, include: the Beidou signal receiver, the control machine and the deviation rectifying driver;
the Beidou signal receiver is adaptive to a Beidou satellite navigation system and arranged on a control angular point of a beam section to be swiveled; the Beidou signal receiver is connected with the control machine;
the control machine is respectively connected with the deviation rectifying driver and the rotating body driving system of the rotating body bridge;
the deviation correcting driver is a vertical telescopic supporting leg provided with a jack, the upper end of the deviation correcting driver is connected with the upper spherical hinge of the swivel bridge, and the lower end of the deviation correcting driver is arranged on a slide way of the lower spherical hinge and is uniformly distributed with the sand bucket at intervals.
The bridge turning control system based on the Beidou navigation system further comprises a wind speed sensor; the wind speed sensor is arranged on the bridge floor and is in wireless connection with the control machine.
The bridge turning control system based on the Beidou navigation system further comprises a deviation rectifying track and a counterweight railcar;
the deviation rectifying track is a vehicle track arranged on a bridge floor;
the counterweight rail car is an electrodynamic remote control car and is arranged on the deviation rectifying rail; each counterweight railcar has the same structure as the counterweight weight, and a driving system of the counterweight railcar is wirelessly connected with the controller.
The deviation rectifying track consists of two vehicle tracks vertically arranged on the bridge floor; the intersection point of the two tracks is at the corresponding position of the axle center of the spherical hinge on the bridge surface, wherein the track parallel to the bridge surface travelling direction is a longitudinal track, and the track vertical to the bridge surface travelling direction is a transverse track; the longitudinal vehicle rails are divided into a front half longitudinal deviation rectifying rail and a rear half longitudinal deviation rectifying rail with the same length by the intersection point of the two vehicle rails, the transverse vehicle rails are divided into a front half transverse deviation rectifying rail and a rear half transverse deviation rectifying rail with the same length by the intersection point of the two vehicle rails, and four sections of deviation rectifying rails are provided.
The four counterweight rail cars are respectively arranged and limited on the front half longitudinal deviation rectifying rail, the rear half longitudinal deviation rectifying rail, the front half transverse deviation rectifying rail and the rear half transverse deviation rectifying rail.
The application method of the bridge rotation control system based on the Beidou navigation system comprises the following steps:
step 1, setting an early warning threshold value and a deviation correction value of a pier deviation angle on a control machine; the early warning threshold is set as a pier deflection angle when a gravity resultant force action point of the swivel bridge exceeds a projection core of a contact surface of the pier and the spherical hinge on a horizontal plane; the deviation correcting value is smaller than the actual pier deflection angle;
the control machine starts the Beidou signal receiver to obtain real-time coordinate changes of each control angular point, and then the real position and the horizontal height of the bridge body in the turning process are obtained, so that the actual pier deflection angle between the upper structure of the turning body and the pier in the turning process is converted;
and 8, the control machine closes the wind speed sensor, the Beidou signal receiver and a swivel driving system of the swivel bridge, and the swivel is finished.
The step 1 further comprises: setting a plurality of groups of wind speed stepped intervals, and respectively setting a spherical hinge safe rotating speed corresponding to each wind speed interval;
the step 2 further comprises: the controller starts a wind speed sensor to obtain real-time wind speed;
the step 4 further comprises: in the turning process, the control machine obtains the rotating speed of the spherical hinge according to the transverse coordinate value of each control angular point; and the controller determines the corresponding safe rotating speed of the spherical hinge according to the real-time wind speed and controls a swivel driving system of the swivel bridge to enable the rotating speed to reach the safe rotating speed of the spherical hinge.
The step 2 also comprises the step of sending a driving instruction to a driving system of the counterweight rail car through the control machine, and controlling the counterweight rail car to be respectively parked at the midpoint of the deviation rectifying rail to which the counterweight rail car belongs;
after the step 6 is started, if the actual deflection angle of the pier continues to increase, the control machine adjusts the position of the counterweight railcar on the deviation rectifying track to further adjust the gravity center of the upper structure of the swivel, so that the overturning trend of the swivel bridge is further relieved, and then the step 7 is carried out; if the actual pier deviation angle begins to decrease, the process directly proceeds to step 7.
The utility model has the advantages that:
the utility model provides a bridge control system's that turns application method based on big dipper navigation for realize the bridge and turn automatic control, automatic deviation rectification and automatic stall in the work progress, thereby can embody the informationization of job site, show the safety supervision efficiency that improves the job site.
In order to ensure that the bridge does not overturn in the rotation construction process, the position coordinates of the control angular point of the rotation structure are monitored in real time based on a Beidou satellite navigation system, the early warning threshold value of the rotation overturn is determined according to the structure of a rotation system, the purpose of guaranteeing the rotation construction safety is achieved by accurately setting the early warning threshold value, and efficient rotation construction control and bridge health monitoring are achieved. The control system has no range limitation, can permanently and continuously monitor for a long time, is not influenced by various weather, does not need to see through among control corner points, and is difficult to realize by some conventional monitoring means, such as a total station.
The Beidou navigation system solves the problems of low precision, low manual measurement precision, time and labor consumption of the traditional GPS, can realize early warning of turning overturn by real-time monitoring of displacement, and can be used as an important technical management means for bridge turning on-site safety construction. The Beidou navigation system is high in precision, and the length of a large swivel bridge is generally large and is dozens of meters to hundreds of meters, so that the distinguishable longitudinal inclination angle of the pier can reach minutes and seconds.
In the deviation rectifying process, the deviation angle is reduced by controlling the telescopic supporting legs and the counterweight rail car, so that the rapid rectification is realized, the overturning risk is eliminated, and the efficient and safe automatic deviation rectifying control is formed.
The utility model relates to a rationally, easily realize, fine practical value has.
Drawings
Fig. 1 is a schematic connection diagram of a bridge swivel control system based on a beidou navigation system in the embodiment of the present invention;
FIG. 2 is a layout diagram of the deviation correcting driver according to the embodiment of the present invention;
fig. 3 is a schematic structural view of the deviation rectifying track and the counterweight rail car according to the embodiment of the present invention;
fig. 4 is the utility model discloses in the embodiment the application method flow chart of bridge control system that turns based on beidou navigation system.
In the figure: 1. a Beidou signal receiver; 2. a control machine; 3. a deviation rectifying driver; 4. correcting the track; 5. counterweight rail cars; 6. a wind speed sensor; 7. a slideway; 8. a sand bucket; 9. and (5) bridge deck.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is described in further detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a bridge turning control system based on a Beidou navigation system, which is arranged on a turning bridge and used for monitoring the movement condition of a bridge body in the turning process of the turning bridge; controlling the starting and stopping of the turning process according to the monitoring result, correcting the deviation of the bridge body and avoiding the bridge body from overturning; beidou navigation system's bridge control system that turns includes: the system comprises a Beidou signal receiver 1, a control machine 2, a deviation correcting driver 3, a deviation correcting track 4, a counterweight railcar 5 and an air speed sensor 6; the connection relation of the control system is shown in FIG. 1;
the Beidou signal receiver 1 is adaptive to a Beidou satellite navigation system, is arranged on a control angular point of a beam section to be swiveled, and is used for acquiring the space three-dimensional coordinate change of the control angular point, so as to realize monitoring of the horizontal deformation and the vertical deformation of the control angular point; the Beidou signal receiver 1 is connected with the control machine 2 and reports the coordinate change of the control angular point to the control machine 2 in real time;
the control machine 2 is respectively connected with the deviation rectifying driver 3 and a swivel driving system of the swivel bridge; the swivel driving system is an original facility of a swivel bridge and is used for drawing the swivel bridge to swivel;
the deviation rectifying driver 3 is a vertical telescopic supporting leg provided with a jack, the upper end of the deviation rectifying driver is connected with the upper spherical hinge of the swivel bridge, the lower end of the deviation rectifying driver is arranged on a slide way 7 of the lower spherical hinge and is uniformly distributed with a sand bucket 8 at intervals, as shown in figure 2; the deviation rectifying driver 3 has the supporting function of a supporting foot, prevents the bridge body from overturning in the turning process, and has the deviation rectifying function, and the deviation angle of the bridge pier is reduced by adjusting the distance between the upper spherical hinge and the slide way 7 at each position;
the deviation rectifying track 4 consists of two tracks vertically arranged on a bridge floor 9; the intersection point of the two tracks is at the corresponding position of the axle center of the spherical hinge on the bridge surface, wherein the track parallel to the bridge surface travelling direction is a longitudinal track, and the track vertical to the bridge surface travelling direction is a transverse track; the longitudinal vehicle rails are divided into a front half longitudinal deviation rectifying rail and a rear half longitudinal deviation rectifying rail with the same length by the intersection point of the two vehicle rails, the transverse vehicle rails are divided into a front half transverse deviation rectifying rail and a rear half transverse deviation rectifying rail with the same length by the intersection point of the two vehicle rails, and four sections of deviation rectifying rails 4 are provided in total, as shown in fig. 3;
the four counterweight rail cars 5 are respectively arranged and limited on the front half longitudinal deviation rectifying rail, the rear half longitudinal deviation rectifying rail, the front half transverse deviation rectifying rail and the rear half transverse deviation rectifying rail, as shown in figure 3; the counterweight rail cars 5 are electric remote control cars, each counterweight rail car 5 has the same structure and counterweight weight, and a driving system of the counterweight rail car is wirelessly connected with the controller 2;
the wind speed sensor 6 is arranged on the bridge floor 9 and is in wireless connection with the control machine 2.
The application method of the bridge turning control system based on the Beidou navigation system is specifically applied to the engineering project of the ultra-large tonnage double-tower double-cable-plane turning cable-stayed bridge, and comprises the following steps as shown in figure 4:
step 1, setting an early warning threshold value and a deviation correction value of a pier deviation angle on a control machine 2;
the early warning threshold value is the ratio of the anti-overturning moment to the overturning moment; in order to simplify calculation, a pier deflection angle when a gravity resultant force action point of a swivel bridge exceeds a projection core of a pier and spherical hinge contact surface on a horizontal plane is assumed as an early warning threshold; when the actual deviation angle of the bridge pier exceeds the requirement of the early warning threshold value, the overturning trend of the swivel bridge is aggravated;
the deviation correcting value is smaller than the actual pier deflection angle; in the embodiment, the deviation correction value is set to 1/2 of the actual pier deflection angle, the current overturning trend is relieved, and a new overturning trend caused by over adjustment is avoided;
the control machine 2 starts the Beidou signal receiver 1 to obtain real-time coordinate changes of each control angular point, obtain the real position and the horizontal height of the bridge body in the turning process, and convert the actual pier deflection angle between the upper structure of the turning body and the pier in the turning process;
and 8, the control machine 2 closes the wind speed sensor 6, the Beidou signal receiver 1 and a swivel driving system of the swivel bridge, and the swivel is finished.
In the same embodiment, the step 1 further includes: setting a plurality of groups of wind speed stepped intervals, and respectively setting a spherical hinge safe rotating speed corresponding to each wind speed interval;
the step 2 further comprises: the controller 2 starts the wind speed sensor 6 to obtain the real-time wind speed;
the step 4 further comprises: in the turning process, the controller 2 obtains the rotating speed of the spherical hinge according to the transverse coordinate value of each control angular point; the controller 2 determines the corresponding safe rotating speed of the spherical hinge according to the real-time wind speed, and controls a swivel driving system of the swivel bridge to enable the rotating speed to reach the safe rotating speed of the spherical hinge.
In the same embodiment, the step 2 further includes sending a driving instruction to a driving system of the counterweight railcar 5 through the controller 2, and controlling the counterweight railcar 5 to be respectively parked at the midpoint of the corresponding deviation rectifying track 4;
after the step 6 is started, if the actual deflection angle of the pier continues to increase, the controller 2 adjusts the position of the counterweight railcar 5 on the corresponding deviation correcting track 4, so as to adjust the gravity center of the upper structure of the swivel, thereby further relieving the overturning trend of the swivel bridge, and then the step 7 is carried out; if the actual pier deviation angle begins to decrease, the process directly proceeds to step 7.
Claims (5)
1. The utility model provides a bridge control system that turns based on beidou navigation system which characterized in that includes: the Beidou signal receiver, the control machine and the deviation rectifying driver;
the Beidou signal receiver is adaptive to a Beidou satellite navigation system and arranged on a control angular point of a beam section to be swiveled; the Beidou signal receiver is connected with the control machine;
the control machine is respectively connected with the deviation rectifying driver and the rotating body driving system of the rotating body bridge;
the deviation correcting driver is a vertical telescopic supporting leg provided with a jack, the upper end of the deviation correcting driver is connected with the upper spherical hinge of the swivel bridge, and the lower end of the deviation correcting driver is arranged on a slide way of the lower spherical hinge and is uniformly distributed with the sand bucket at intervals.
2. The Beidou navigation system based bridge swivel control system according to claim 1, further comprising a wind speed sensor; the wind speed sensor is arranged on the bridge floor and is in wireless connection with the control machine.
3. The Beidou navigation system based bridge swivel control system of claim 2, further comprising a deviation correcting track and a counterweight railcar;
the deviation rectifying track is a vehicle track arranged on a bridge floor;
the counterweight rail car is an electrodynamic remote control car and is arranged on the deviation rectifying rail; each counterweight railcar has the same structure as the counterweight weight, and a driving system of the counterweight railcar is wirelessly connected with the controller.
4. The Beidou navigation system based bridge swivel control system according to claim 3, wherein the deviation rectifying track is composed of two tracks vertically arranged on a bridge deck; the intersection point of the two tracks is at the corresponding position of the axle center of the spherical hinge on the bridge surface, wherein the track parallel to the bridge surface travelling direction is a longitudinal track, and the track vertical to the bridge surface travelling direction is a transverse track; the longitudinal vehicle rails are divided into a front half longitudinal deviation rectifying rail and a rear half longitudinal deviation rectifying rail with the same length by the intersection point of the two vehicle rails, the transverse vehicle rails are divided into a front half transverse deviation rectifying rail and a rear half transverse deviation rectifying rail with the same length by the intersection point of the two vehicle rails, and four sections of deviation rectifying rails are provided.
5. The Beidou navigation system based bridge swivel control system of claim 4, wherein four counterweight rail cars are provided and defined on the front half longitudinal deviation rectifying track, the rear half longitudinal deviation rectifying track, the front half transverse deviation rectifying track and the rear half transverse deviation rectifying track respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022910701.2U CN213896806U (en) | 2020-12-07 | 2020-12-07 | Bridge rotation control system based on Beidou navigation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022910701.2U CN213896806U (en) | 2020-12-07 | 2020-12-07 | Bridge rotation control system based on Beidou navigation system |
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| CN213896806U true CN213896806U (en) | 2021-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916280A (en) * | 2021-09-01 | 2022-01-11 | 中铁七局集团有限公司 | Big-section wide-span rigid frame bridge turning real-time monitoring system based on Beidou RTK |
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2020
- 2020-12-07 CN CN202022910701.2U patent/CN213896806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916280A (en) * | 2021-09-01 | 2022-01-11 | 中铁七局集团有限公司 | Big-section wide-span rigid frame bridge turning real-time monitoring system based on Beidou RTK |
| CN113916280B (en) * | 2021-09-01 | 2023-04-25 | 中铁七局集团有限公司 | Big segment wide span rigid frame bridge rotation real-time monitoring system based on big dipper RTK |
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