CN214540541U - Bridge flat turning angular velocity intelligent control system based on stay cord displacement meter - Google Patents
Bridge flat turning angular velocity intelligent control system based on stay cord displacement meter Download PDFInfo
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- CN214540541U CN214540541U CN202120886450.0U CN202120886450U CN214540541U CN 214540541 U CN214540541 U CN 214540541U CN 202120886450 U CN202120886450 U CN 202120886450U CN 214540541 U CN214540541 U CN 214540541U
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Abstract
The utility model discloses a bridge flat corner speed intelligence control system based on stay cord displacement meter, include: a lower turntable; the upper rotating disc is provided with a spherical hinge, and a traction cable is wound on the upper rotating disc; the pull rope displacement meter is fixed on the lower rotary table through a fixing support, the free end of the pull rope is fixed on the upper rotary table, and the positions of the pull rope displacement meter and the pull rope are in the same horizontal line; the stay cord displacement meter monitoring module is connected with the stay cord displacement meter and used for acquiring the rotating displacement L of the upper rotary disc measured by the stay cord displacement meter and converting the rotating displacement L into a rotating angle, a rotating angular velocity and a rotating angular acceleration; the tensioning jack is arranged on the upper rotary table and used for tensioning the traction cable wound on the upper rotary table so as to drive the rotating bridge to rotate; the tensioning jack control system is connected with the tensioning jack; and the central control integrated system is connected with the stay rope displacement meter monitoring module and the tensioning jack control system. The utility model discloses can in time, accurate, transmit bridge data of turning high-efficiently.
Description
Technical Field
The utility model relates to a bridge flat turn construction intelligent control technical field. More specifically speaking, the utility model relates to a bridge flat corner speed intelligence control system based on stay cord displacement meter.
Background
In the bridge flat turning construction, the turning angular velocity is a key control parameter for realizing stable and efficient turning, the stability and the safety of a turning structure are directly concerned, if the turning angular velocity is not controlled, the structural stress is easy to exceed, and the rotating speed is too high, so that the turning body can be unstably overturned, and engineering accidents are caused. The traditional manual monitoring means mostly adopts a total station or a level gauge, the stable state before and after a certain turning stage is observed, and the rotating speed and the angular speed at the stage are calculated through the change value of a measuring point. And to novel wireless sensor such as GPS, in the test procedure, data transmission easily receives the electromagnetic field (when turning, often has equipment such as unmanned aerial vehicle to shoot), vibration impact, signal coverage effective area etc. and survey data need carry out a large amount of data or image processing at the conversion of polar coordinates or use inverse trigonometric function, and is consuming time hard, and in addition, the economic cost of sensor is on the high side. In a turning site, test data needs to be transmitted timely, accurately and efficiently, and aiming at the problems, a bridge flat turning intelligent control system which is simple, convenient, efficient, economical, practical and capable of intelligently measuring angular speed becomes an urgent need.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bridge flat corner speed intelligence control system based on stay cord displacement meter can in time, accurately, transmit bridge data of turning high-efficiently.
In order to realize the objects and other advantages in accordance with the present invention, there is provided a bridge flat turning angular velocity intelligent control system based on a stay cord displacement meter, comprising:
the top surface of the lower turntable is provided with a spherical hinge accommodating groove;
the upper rotating disc is provided with a spherical hinge, the spherical hinge of the upper rotating disc is rotatably arranged in the spherical hinge accommodating groove, and a traction cable is wound on the upper rotating disc;
the pull rope displacement meter is fixed on the lower rotary table, pull ropes of the pull rope displacement meter are orderly wound on the upper rotary table, the free ends of the pull ropes are fixed on the upper rotary table, and the positions of the pull rope displacement meter and the pull ropes are on the same horizontal line;
the pull rope displacement meter monitoring module is connected with the pull rope displacement meter;
the tensioning jack is arranged on the upper turntable and used for tensioning a traction cable wound on the upper turntable;
the tensioning jack control system is connected with the tensioning jack;
and the central control integrated system is connected with the stay rope displacement meter monitoring module and the tensioning jack control system.
Preferably, the bottom of the lower turntable is provided with a lower turntable base; the pull rope displacement meter is fixed on the lower turntable base through a fixing bracket; the tensioning jack is arranged on the lower turntable base through the jack base.
Preferably, the intelligent control system further comprises:
and the data acquisition and transmission module is connected with the stay rope displacement meter monitoring module and the tensioning jack control system.
Preferably, the central control integration system includes:
the data receiving module is connected with the data acquisition and transmission module;
the data analysis and control module is connected with the data receiving module and the tensioning jack control system;
and the display module is connected with the data analysis and control module.
Preferably, the center of the top surface of the lower rotary table is provided with a shaft rod, the center of the upper rotary table is provided with a through hole, the upper rotary table is arranged on the shaft rod in a penetrating manner, and the diameter of the through hole is larger than the diameter of the shaft rod.
Preferably, the two groups of tensioning jacks are respectively positioned at the left side and the right side of the upper turntable; the traction cable is divided into two strands, the two strands of traction cables are wound on the upper rotating disc, and the two groups of tensioning jacks are arranged to enable the tensioning directions of the two strands of traction cables to be parallel and opposite.
Preferably, a protection jack is arranged between the lower turntable base and the upper turntable.
The utility model discloses at least, include following beneficial effect:
1. stay cord displacement meter that bridge flat corner velocity intelligence control system used, the stay cord that has accurate scale is installed on last carousel, and stay cord displacement meter installs on fixed lower carousel base, has effectively avoided the cantilever beam end of turning because of the shake of turning enlargies the influence of effect and rotation hysteresis effect, has improved the measuring accuracy, has avoided artifical measuring error, has avoidd high altitude sensor installation debugging operation simultaneously, convenient operation, safe and reliable, low economic nature.
2. The intelligent control system for the bridge flat turning angular velocity based on the stay cord displacement meter automatically converts data measured by the stay cord displacement meter into turning angle, turning angular velocity and turning angular acceleration, grasps the turning state in real time, has simple working principle and reliable theoretical basis, is hardly influenced by bridge vibration deformation, is suitable for the construction monitoring of bridges, and has small construction technology danger.
3. The intelligent bridge flat turning angular velocity control system based on the stay cord displacement meter determines a turning stage according to turning angular velocity and turning angular acceleration, and intelligently regulates and controls the tension force of a tensioning jack in the stages of accelerating turning, uniform turning and decelerating turning according to an angular velocity and angular acceleration control principle in stages, so that the informatization and intelligent level of bridge turning is improved, and the safety, smoothness and high efficiency of turning are favorably controlled.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of a bridge turning structure of the present invention;
fig. 2 is a schematic plane rotation diagram of the upper turntable of the present invention;
FIG. 3 is a schematic view of the space rotation of the present invention;
FIG. 4 is a structural framework diagram of the intelligent control system for bridge yaw rate.
Description of reference numerals: the device comprises a 1-swivel bridge, 2 upper turntables, 3 lower turntables, 4 lower turntable bases, 5 tensioning jacks, 6 jack bases, 7 fixed supports, 8 stay cord displacement meters, 9 traction cables, 10 protective jacks, 11 stay cords, 12 spherical hinges and 13 shaft rods.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-4, the utility model provides a bridge flat corner speed intelligence control system based on stay cord displacement meter, include:
the top surface of the lower rotary table 3 is provided with a spherical hinge 12 accommodating groove;
the upper rotating disc 2 is provided with a spherical hinge 12, the spherical hinge 12 of the upper rotating disc 2 is rotatably arranged in a spherical hinge 12 accommodating groove, and a traction cable 9 is wound on the upper rotating disc 2; the structure of the ball joint 12 is shown in fig. 1, and is a circular arc surface protruding downwards, and the shape of the receiving groove of the ball joint 12 is matched with the shape of the ball joint 12. The side surfaces of the upper rotary table 2 and the lower rotary table 3 are formed in a cylindrical shape.
The pull rope displacement meter 8 is fixed on the lower rotary table 3, pull ropes 11 of the pull rope displacement meter 8 are sequentially wound on the upper rotary table 2, the free ends of the pull ropes 11 are fixed on the upper rotary table 2, the positions of the pull rope displacement meter 8 and the positions of the pull ropes 11 are on the same horizontal line, and the pull ropes 11 are provided with accurate scales;
stay cord displacement meter monitoring module, it is connected with stay cord displacement meter 8 for gather 2 rotation displacement L of last carousel that 8 survey of stay cord displacement meter, and convert into and turn angular velocity omegaiAngular acceleration alpha of the rotating bodyiIn another embodiment, the stay wire displacement meter monitoring module can also be converted into a rotation angle.
The tensioning jack 5 is arranged on the upper rotary table 2 and used for tensioning a traction cable 9 wound on the upper rotary table 2 so as to drive the swivel bridge 1 to swivel and is swivel power equipment;
a control system of the tensioning jack 5, which is connected with the tensioning jack 5;
a central control integrated system connected with the stay wire displacement meter monitoring module and the control system of the tension jack 5 and used for receiving the angular velocity omega of the rotating bodyiAngular acceleration alpha of the rotating bodyiThe tension data of the traction cable 9 is obtained according to the angular speed omega of the rotoriAngular acceleration alphaiAnd controlling a control system of the tensioning jack 5.
In the embodiment, based on the intelligent control system for bridge flat turning angular velocity of the stay rope displacement meter 8, the stay rope displacement meter 8 is installed on the lower turntable base 4, the stay rope 11 with accurate scales is orderly wound on the upper turntable 2, the stay rope 11 is wound for one circle due to the bridge turning angle, the free end of the stay rope 11 is fixed on the upper turntable 2, the situation that the position of a measuring point is selected at the cantilever beam end of a main beam is avoided, and therefore errors caused by the turning shake amplification effect and the 'lagging rotation' effect of the cantilever beam end are avoided. The relation between the tangential velocity and the angular velocity of the outer edge of the measured rotary table can further obtain the angular velocity and the angular acceleration at any moment in the turning process, and the pretension of the tensioning jack 5 is adjusted in time through a control system based on the angular velocity control principle and the angular acceleration control principle, so that the smooth and efficient turning is ensured. And the current rotation state is mastered by monitoring the rotation angle theta in real time. Based on the intelligent control system for the bridge flat turning angular velocity of the stay rope displacement meter 8, the process procedure of turning is simplified, informatization and intellectualization are achieved, the fundamental control precision is guaranteed, and meanwhile, the labor cost is also saved.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the bottom of the lower turntable 3 is provided with a lower turntable base 4; the pull rope displacement meter 8 is fixed on the lower turntable base 4 through the fixing bracket 7; the tensioning jack 5 is mounted on the lower turntable base 4 through a jack base 6.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the intelligent control system further comprises:
and the data acquisition and transmission module is connected with the stay rope displacement meter monitoring module and the tensioning jack 5 control system and is used for sending a data acquisition instruction to the stay rope displacement meter monitoring module and the tensioning jack 5 control system.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the central control integration system includes:
the data receiving module is connected with the data acquisition and transmission module;
a data analysis and control module connected with the data receiving module and the control system of the tensioning jack 5 for controlling the angular velocity omega of the rotary bodyiAngular acceleration alpha of the rotating bodyiAnalyzing the tension data of the traction cable 9, and issuing a control instruction to a control system of the tensioning jack 5 according to an analysis result;
the display module is connected with the data analysis and control module and used for displaying the current turning posture of the bridge, and particularly comprises displaying the turning angular velocity omegaiAngular acceleration alpha of the rotating bodyiAnd 9 tension forces of the traction cable and the like, so that test data display and swivel construction interfaces are realized.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the center of the top surface of the lower rotary table 3 is provided with a shaft rod 13, the center of the upper rotary table 2 is provided with a through hole, the upper rotary table 2 is arranged on the shaft rod 13 in a penetrating mode, and the diameter of the through hole is larger than the diameter of the shaft rod 13.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the two groups of tensioning jacks 5 are respectively positioned at the left side and the right side of the upper turntable 2; the traction cable 9 is divided into two strands, the two strands of traction cables 9 are wound on the upper rotary table 2, the fixed end of each traction cable 9 is fixed with the upper rotary table 2 through an anchoring piece, and the two groups of tensioning jacks 5 are arranged to enable the tensioning directions of the two strands of traction cables 9 to be parallel and opposite.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: a protection jack 10 is provided between the lower turntable base 4 and the upper turntable 2 for preventing the upper turntable 2 from tilting.
As shown in fig. 1 to 4, a method for controlling bridge horizontal rotation by using an intelligent control system includes the following steps:
step one, obtaining a displacement-time curve L-t through a stay cord displacement meter 8 and a stay cord displacement meter monitoring module, and obtaining a rotation angular velocity omegaiAnd angular acceleration alpha of the rotori；
Wherein, the pull rope displacement meter 8 obtains a displacement-time curve L-t at any time interval ti＝ti-ti-1Corresponding displacement Li＝Li-Li-1Outer edge linear velocity v of the turntableiAccording to linear velocity viAnd angular velocity wiAnd the relation of the radius r of the turntable, the angular velocity w can be obtainedi:
From angular velocity wiAnd angular acceleration aiThe relationship of (c) can be found in:
step two, starting the stage, if thetaiWhen the bridge changes, the bridge overcomes the static friction force to rotate, namely, the bridge enters an accelerating rotation stage; thetaiThe bridge structure is rotated for a corner;
step three, accelerating the rotation stage, whereinSetting angular acceleration allowable value [ omega ] in central control integrated system]Allowable value of angular velocity [ alpha ]]If angular acceleration ai＜[α]Angular velocity ωi＜[ω]The central control integrated system sends an instruction for continuously increasing the angular acceleration or keeping the angular acceleration to the control equipment of the tensioning jack 5, otherwise, the angular acceleration is reduced;
step four, a uniform rotation stage, namely when the uniform speed stage is to be reached, if the angular speed omega isi→[ω]The central control integrated system sends a continuous working instruction for keeping the tension force of the current traction cable 9 to a control system of the tensioning jack 5; omegai→[ω]Is referred to as omegaiThe angular acceleration tolerance is 80-90%. The uniform-speed turning stage is the main stage of the whole turning stage and has the longest occupied time.
In the fourth step, in the uniform speed stage or due to the influence of other factors, the bridge rotating speed fluctuates above and below a certain determined value, but not a certain value, if the angular speed ω is larger than a certain valuei≥[ω]The central control integrated system sends a command of reducing the tension force of the traction cable 9 to a control system of the tensioning jack 5, and the speed is slowly reduced until omegai→[ω]。
Step five, in the deceleration stage, the central control integrated system sends a deceleration command to the control system of the tensioning jack 5 to reach the angular velocity omegai→ 0; when the swivel angle reaches 80% -90% of the target swivel angle value set by the central control integrated system, the deceleration stage is entered, and in this embodiment, the swivel angle reaches 85% of the target swivel angle, and the deceleration stage is entered. Angular velocity ω in the present embodimenti→ 0 means ωiWhen reaching 0.0001-0.0005rad/min, stopping decelerating and entering a inching stage.
Step six, in the inching stage, a residual turning angle inching value theta 'is set in the central control integrated system, when theta → theta' is reached, theta → theta 'means that theta reaches 80% -90% of the residual turning angle inching value theta', the turning enters the inching stage, according to the test data of a tested turning body, the central control integrated system sends an inching duration control instruction to the tensioning jack 5 control system, the tensioning jack 5 control system controls the tensioning jack 5 to tension the traction cable 9 through an inching control button until the turning body reaches a target value, and the turning is completed; theta is the current remaining swivel angle. When the rotor is close to the target value, namely the rotor is about to be rotated in place, the last stage is entered: in the inching stage, the control button of the control system of the tensioning jack 5 is inching, so that the control system can be turned in place little by little, and the adjustment is mainly facilitated to reach the final target value.
Current remaining swivel angle theta, initial swivel angle theta0Rotated by an angle thetaiThen theta is equal to theta0-θiWherein thetaiComprises the following steps:
and determining that the current bridge is in an accelerating rotation stage, a constant-speed rotation stage, a decelerating rotation stage and a inching stage according to the rotation angle, wherein the rotation reaches a target value if the current residual rotation angle theta is 0 DEG, and the rotation is finished.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a bridge flat corner speed intelligence control system based on stay cord displacement meter which characterized in that includes:
the top surface of the lower turntable is provided with a spherical hinge accommodating groove;
the upper rotating disc is provided with a spherical hinge, the spherical hinge of the upper rotating disc is rotatably arranged in the spherical hinge accommodating groove, and a traction cable is wound on the upper rotating disc;
the pull rope displacement meter is fixed on the lower rotary table, pull ropes of the pull rope displacement meter are orderly wound on the upper rotary table, the free ends of the pull ropes are fixed on the upper rotary table, and the positions of the pull rope displacement meter and the pull ropes are on the same horizontal line;
the pull rope displacement meter monitoring module is connected with the pull rope displacement meter;
the tensioning jack is arranged on the upper turntable and used for tensioning a traction cable wound on the upper turntable;
the tensioning jack control system is connected with the tensioning jack;
and the central control integrated system is connected with the stay rope displacement meter monitoring module and the tensioning jack control system.
2. The intelligent bridge translational angular velocity control system based on the pull rope displacement meter as claimed in claim 1, wherein the bottom of the lower turntable is provided with a lower turntable base; the pull rope displacement meter is fixed on the lower turntable base through a fixing bracket; the tensioning jack is arranged on the lower turntable base through the jack base.
3. The intelligent bridge translational angular velocity control system based on a pull rope displacement meter as claimed in claim 1, wherein the intelligent control system further comprises:
and the data acquisition and transmission module is connected with the stay rope displacement meter monitoring module and the tensioning jack control system.
4. The intelligent bridge translational angular velocity control system based on the pull rope displacement meter as claimed in claim 3, wherein the central control integration system comprises:
the data receiving module is connected with the data acquisition and transmission module;
the data analysis and control module is connected with the data receiving module and the tensioning jack control system;
and the display module is connected with the data analysis and control module.
5. The intelligent bridge translational angular velocity control system based on the pull rope displacement meter as claimed in claim 1, wherein a shaft rod is arranged at the center of the top surface of the lower turntable, a through hole is arranged at the center of the upper turntable, the upper turntable is arranged on the shaft rod in a penetrating manner, and the diameter of the through hole is larger than the diameter of the shaft rod.
6. The intelligent bridge translational angular velocity control system based on the stay cord displacement meter as claimed in claim 1, wherein the two groups of tensioning jacks are respectively positioned at the left and right sides of the upper turntable; the traction cable is divided into two strands, the two strands of traction cables are wound on the upper rotating disc, and the two groups of tensioning jacks are arranged to enable the tensioning directions of the two strands of traction cables to be parallel and opposite.
7. The intelligent bridge translational angular velocity control system based on the pull rope displacement meter as claimed in claim 1, wherein a protection jack is arranged between the lower turntable base and the upper turntable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120886450.0U CN214540541U (en) | 2021-04-27 | 2021-04-27 | Bridge flat turning angular velocity intelligent control system based on stay cord displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120886450.0U CN214540541U (en) | 2021-04-27 | 2021-04-27 | Bridge flat turning angular velocity intelligent control system based on stay cord displacement meter |
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| Publication Number | Publication Date |
|---|---|
| CN214540541U true CN214540541U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120886450.0U Active CN214540541U (en) | 2021-04-27 | 2021-04-27 | Bridge flat turning angular velocity intelligent control system based on stay cord displacement meter |
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| CN (1) | CN214540541U (en) |
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2021
- 2021-04-27 CN CN202120886450.0U patent/CN214540541U/en active Active
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