CN116816774A - Control system and control method for hydraulic synchronous pushing and sliding equipment - Google Patents
Control system and control method for hydraulic synchronous pushing and sliding equipment Download PDFInfo
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Abstract
The invention discloses a control system and a control method of hydraulic synchronous pushing and sliding equipment, which relate to the technical field of bridge construction and realize three-level control of hydraulic pushing and sliding through a main controller, an optical synchronization unit, a hydraulic control box, a hydraulic device and a hydraulic pump controlled by the hydraulic control box; the hydraulic pushing and sliding control precision and synchronism of the bridge are effectively improved, the stress on the bridge structure in the construction process is reduced, the safety of the bridge and the safety and normal use of the infrastructure around the bridge are guaranteed, the deflection in the pushing and sliding construction process can be effectively reduced, the construction complexity is reduced, the construction efficiency is improved, and the construction progress is guaranteed.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a control system and a control method of hydraulic synchronous pushing and sliding equipment.
Background
Along with the continuous development of the economy in China, the foundation construction scale is continuously enlarged, and the requirements for bridge construction are gradually increased; meanwhile, along with the continuous perfection of the infrastructure construction, the environment faced by bridge construction is increasingly complex, and in order not to influence the normal use of the original infrastructure, the normal operation and safety of the existing train lines, highways, expressways and channels are not influenced, and new requirements are put forward for the construction mode, the construction progress and the construction safety of bridge construction.
The pushing and sliding construction method of the bridge has the advantages of short construction period and small influence on surrounding buildings, and the pushing and sliding construction method generally utilizes a pushing and sliding structure to push the main steel structure of the bridge span to a preset position; or placing part of the segmented steel beams on a preset sliding rail, pushing the segmented steel beams to a preset position through a pushing sliding structure, then connecting new segmented steel beams, and then performing pushing operation, and sequentially assembling all the segmented steel beams and gradually pushing the segmented steel beams in place. The existing pushing and sliding construction method relates to a large number of hydraulic mechanisms for pushing, jacking, beam falling and other operations of bridge spans, but carries out long-distance control on a large number of hydraulic devices, has more and longer control lines, is influenced by the delay of the control lines and the mutual interference between control signals, and has poor hydraulic control synchronism; moreover, the accuracy and time delay of each sensor arranged on the bridge span and the hydraulic device and mutual interference among lines are affected, and the real-time performance and accuracy of the sensing detection system are insufficient, so that the accuracy of hydraulic control is further affected. The hydraulic pushing and sliding control is not synchronous and accurate enough, so that pushing operation is easy to deviate, construction difficulty is increased, and construction progress is influenced; and the hydraulic control synchronism and the precision are insufficient, so that the local stress of the bridge span structure is increased, the bridge pier is subjected to larger horizontal counter force, the damage risk of the bridge structure is increased, and the bridge safety and the safety and normal use of the infrastructure around the bridge are not facilitated.
Therefore, how to improve the control accuracy and the synchronism of the hydraulic pushing and sliding control system is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a control system and a control method for hydraulic synchronous pushing and sliding equipment, which are used for solving the problem of insufficient control precision and synchronism of the existing hydraulic pushing and sliding control system.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention discloses a hydraulic synchronous pushing and sliding equipment control system, which comprises: the hydraulic system comprises a main controller, an optical synchronization unit, a hydraulic control box, a monitoring unit, a hydraulic device and a hydraulic pump.
The main controller is connected with the hydraulic control box through a CAN bus and sends a control command to the hydraulic control box; the main controller is also connected with the optical synchronization unit through the CAN bus and sends a synchronization command to the optical synchronization unit.
The optical synchronization unit is connected with the hydraulic control box through an optical fiber, and sends an optical pulse signal to the hydraulic control box according to the synchronization command; the optical synchronization unit is used for receiving feedback signals sent by each hydraulic control box;
specifically, let the hydraulic control box be A 1 、A 2 、A 3 ……A i The optical pulse signal sent to the ith hydraulic control box by the jth optical pulse is B j i Time of TB j i， The feedback signal sent by the ith hydraulic control box is C j i Time TC j i 。
The j-th optical pulse signal deviation value D of the i-th hydraulic control box can be calculated j i ＝TB j i -TC j i All the optical pulse signal deviation values { D }, are 1 i ，D 2 i ，D 3 i ……D j i Greater than threshold T in } 0 Removing abnormal value of (a), and calculating to obtain an ith hydraulic control box light pulse signal deviation average value D i And further constitutes a dataset d= { D 1 ,D 2 ,D 3 ……D i -a }; taking the maximum value D in the data set D max Finally, the optical pulse signal delay compensation value T of each hydraulic control box can be obtained i＝ D max -D i . The delay compensation value of the initial optical pulse signal is set to 0, and the transmission time of the j optical pulse signal transmitted to the i hydraulic control box by the optical synchronization unit is added with the delay compensation value T of the optical pulse signal i And then sent.
The hydraulic control box is electrically connected with a hydraulic pump and a hydraulic device, and controls the power of the hydraulic pump and the oil supply pressure according to the control command; the hydraulic pump is connected with a plurality of hydraulic devices and is used for providing hydraulic oil for the hydraulic devices; the hydraulic control box controls the hydraulic device to move according to the control command and the optical pulse signal; the hydraulic control box also receives pressure signals and displacement signals fed back by the hydraulic device, and pressure signals and power signals fed back by the hydraulic pump.
The monitoring unit includes: the device comprises a displacement monitoring module, a stress monitoring module and a hydraulic monitoring module; the monitoring unit is connected with the main controller, monitoring data of the displacement monitoring module, the stress monitoring module and the hydraulic monitoring module are transmitted to the main controller in real time, and the main controller sends out a control command according to the real-time monitoring data and a slip operation set value.
Further, the control command includes: the serial number of the hydraulic device, the control direction and the pulse number corresponding to the serial number of the hydraulic device, the serial number of the hydraulic pump and the power and pressure value corresponding to the serial number of the hydraulic pump; the synchronization command includes a pulse frequency, a start command, and a stop command.
Further, the hydraulic control box is a plurality of, the hydraulic control box includes: the device comprises a main control MCU, a photoelectric signal conversion module and a signal receiving and transmitting module, wherein the photoelectric signal conversion module and the signal receiving and transmitting module are connected with the main control MCU; the photoelectric signal conversion module is used for converting an optical pulse signal into an electric pulse signal, the main control MCU generates a control signal according to the electric pulse signal and the control command, and the control signal is sent to the hydraulic device with the corresponding serial number through the signal receiving and transmitting module; after the main control MCU sends all control signals, a feedback signal is sent to the optical synchronization unit through the photoelectric signal conversion module; the main control MCU is also connected with the monitoring unit through an optical fiber and is used for sending the pressure signal and the displacement signal of the hydraulic device, the pressure signal and the power signal of the hydraulic pump, which are received by the signal receiving and transmitting module, to the monitoring unit.
Further, the hydraulic device adopts a digital hydraulic cylinder, and the hydraulic device is controlled to move according to the pulse control signal; the hydraulic device includes: the pushing hydraulic device, the jacking hydraulic device and the transverse movement limiting hydraulic device; the hydraulic control box is connected with one or more of a pushing hydraulic device, a jacking hydraulic device and a transverse movement limiting hydraulic device.
Further, the displacement monitoring module monitors the whole displacement data of the bridge span in real time according to the displacement sensor at the top of the hydraulic device and the displacement sensor on the bridge span; the stress monitoring module monitors stress data born by the bridge span main body and the bridge pier main body in real time according to the stress sensor on the bridge span and the stress sensor on the bridge pier; and the hydraulic monitoring module is used for monitoring the pressure data of each hydraulic device and each hydraulic pump in real time. The stress sensor is an optical fiber stress sensor and is fixedly adhered to the bridge span main body structure and the bridge pier main body structure.
Further, the hydraulic synchronous pushing and sliding equipment control system further comprises a process display and alarm module, wherein the process display and alarm module is connected with the main controller, can display the whole process of the pushing and sliding operation of the bridge in real time according to the monitoring data received by the main controller, and gives an alarm to the abnormal monitoring data.
Further, the hydraulic synchronous pushing and sliding equipment control system further comprises a storage module, wherein the storage module is connected with the main controller and used for storing the monitoring data received by the main controller and the control command sent by the main controller.
The invention also discloses a control method of the hydraulic synchronous pushing and sliding equipment, which adopts the control system of the hydraulic synchronous pushing and sliding equipment and comprises the following steps:
step 1: placing the bridge span to be pushed or part of bridge span sections on a preset sliding track, installing a pushing hydraulic device, a jacking hydraulic device and a traversing limiting hydraulic device to preset positions, and installing a displacement sensor and a stress sensor;
step 2: initializing three-dimensional coordinates of each displacement sensor and stress sensor according to the three-dimensional construction model and the actual measurement coordinates of the sensors after the sensors are installed in place; setting pushing slip preset data, comprising: the method comprises the steps of pushing and sliding a preset position, pushing and sliding speed, safety threshold ranges of all stress sensors, pressure safety thresholds of all hydraulic devices and oil supply pressure values of all hydraulic pumps;
step 3: the main controller calculates control pulse frequency, the movement direction of each hydraulic device and the control pulse number according to the coordinate data of the displacement sensor and the stress sensor and the pushing slip preset data, and sends the control pulse frequency, the movement direction and the control pulse number of each hydraulic device to the corresponding hydraulic control box;
step 4: after receiving the confirmation information sent by the hydraulic control box, the master controller sends a synchronous command to the optical synchronization unit, the optical synchronization unit sends an optical pulse signal, and the hydraulic control box controls the hydraulic device to synchronously move according to the control command and the optical pulse signal;
step 5: the monitoring unit monitors displacement data, stress data and hydraulic data in the pushing and sliding process in real time, when the data exceeds a threshold value, an alarm is sent, the main controller sends a pause command, then a new control command is calculated and obtained, the new control command is sent to a corresponding hydraulic control box, and the operation step 4 is executed until the bridge span or part of bridge span sections are pushed and slid to a preset position.
Further, when the to-be-pushed sliding bridge span is of a multi-section structure, the method further comprises the steps of:
step 6: placing a new sliding bridge span section to be pushed on a preset position of a sliding track, connecting with the pushed section, and executing the steps 1-5;
repeating steps 1-6 until all bridge span segments are pushed into place.
Compared with the prior art, the hydraulic synchronous pushing and sliding equipment control system disclosed by the invention has the advantages that by arranging the special optical synchronization unit, the synchronous optical pulse signals can be sent to the corresponding hydraulic control box according to the synchronous command, and the synchronous signals can not be interfered by external electromagnetic signals and signals between circuits, so that the hydraulic synchronous pushing and sliding equipment control system has the characteristics of good time accuracy and high signal stability; and the sending time of each pulse signal is adjusted in real time through the compensation value, so that the synchronism of system control is further enhanced. The hydraulic device adopts a digital hydraulic cylinder, so that the hydraulic device can be accurately controlled according to a digital control signal, and the pushing and sliding accuracy is improved; the stress sensor and the displacement sensor can be optical fiber sensors, are small in size, high in accuracy and sensitivity, are not easy to interfere, and can timely feed back detection data, so that the detection accuracy and the reaction speed of the monitoring unit are improved. The main controller can accurately and timely send out an alarm according to the data of the monitoring unit and send corresponding control commands and synchronous commands, so that the hydraulic device and the hydraulic pump are accurately and synchronously controlled, the offset of pushing operation is effectively reduced, the bridge sliding construction difficulty is reduced, the construction progress is improved, the situation that the local stress of bridge spans and pier structures is overlarge is remarkably reduced, the damage risk of the bridge structures is reduced, and the safety and normal use of bridge peripheral infrastructures are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the pushing hydraulic device of the present invention.
Fig. 3 is a schematic view of the jacking hydraulic device and the traversing limiting hydraulic device of the present invention.
In the figure: 1. a sliding rail mounting base surface; 2. a slip rail; 3. pushing the hydraulic device; 4. pushing the ear plate; 5. bridge span segments; 6. a sliding base; 7. jacking a hydraulic device; 8. a lateral movement limiting hydraulic device; 9. and a pulley trolley.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a control system of hydraulic synchronous pushing and sliding equipment, as shown in fig. 1, comprising: the hydraulic system comprises a main controller, an optical synchronization unit, a hydraulic control box, a monitoring unit, a hydraulic device and a hydraulic pump.
The main controller is connected with the hydraulic control box through a CAN bus and sends a control command to the hydraulic control box; the main controller is also connected with the optical synchronization unit through the CAN bus and sends a synchronization command to the optical synchronization unit.
The optical synchronization unit is connected with the hydraulic control box through an optical fiber, and sends an optical pulse signal to the hydraulic control box according to the synchronization command; the optical synchronization unit is used for receiving feedback signals sent by each hydraulic control box;
specifically, let the hydraulic control box be A 1 、A 2 、A 3 ……A i The optical pulse signal sent to the ith hydraulic control box by the jth optical pulse is B j i Time of TB j i， The feedback signal sent by the ith hydraulic control box is C j i Time TC j i 。
The j-th optical pulse signal deviation value D of the i-th hydraulic control box can be calculated j i ＝TB j i -TC j i All the optical pulse signal deviation values { D }, are 1 i ，D 2 i ，D 3 i ……D j i Greater than threshold T in } 0 Removing abnormal value of (a), and calculating to obtain an ith hydraulic control box light pulse signal deviation average value D i And further constitutes a dataset d= { D 1 ,D 2 ,D 3 ……D i -a }; taking the maximum value D in the data set D max Finally, the optical pulse signal delay compensation value T of each hydraulic control box can be obtained i＝ D max -D i . The delay compensation value of the initial optical pulse signal is set to 0, and the transmission time of the j optical pulse signal transmitted to the i hydraulic control box by the optical synchronization unit is added with the delay compensation value T of the optical pulse signal i And then sent.
The hydraulic control box is electrically connected with a hydraulic pump and a hydraulic device, and controls the power of the hydraulic pump and the oil supply pressure according to the control command; the hydraulic pump is connected with a plurality of hydraulic devices and is used for providing hydraulic oil for the hydraulic devices; the hydraulic control box controls the hydraulic device to move according to the control command and the optical pulse signal; the hydraulic control box also receives pressure signals and displacement signals fed back by the hydraulic device, and pressure signals and power signals fed back by the hydraulic pump.
The monitoring unit includes: the device comprises a displacement monitoring module, a stress monitoring module and a hydraulic monitoring module; the monitoring unit is connected with the main controller, monitoring data of the displacement monitoring module, the stress monitoring module and the hydraulic monitoring module are transmitted to the main controller in real time, and the main controller performs load balancing, posture correction and stress control calculation through a preset control program according to the real-time monitoring data and the slip operation set value and sends out corresponding control commands.
Further, the control command includes: the serial number of the hydraulic device, the control direction and the pulse number corresponding to the serial number of the hydraulic device, the serial number of the hydraulic pump and the power and pressure value corresponding to the serial number of the hydraulic pump; the synchronization command includes a pulse frequency, a start command, and a stop command. The control command may also include a pulse sequence number B corresponding to the hydraulic device sequence number j i For example, a particular hydraulic device is controlled in 1 st and 3 rd5, 7, … … light pulses.
Further, the hydraulic control box is a plurality of, the hydraulic control box includes: the device comprises a main control MCU, a photoelectric signal conversion module and a signal receiving and transmitting module, wherein the photoelectric signal conversion module and the signal receiving and transmitting module are connected with the main control MCU; the photoelectric signal conversion module is used for converting an optical pulse signal into an electric pulse signal, the main control MCU generates a control signal according to the electric pulse signal and the control command, and the control signal is sent to the hydraulic device with the corresponding serial number through the signal receiving and transmitting module; after the main control MCU sends all control signals, a feedback signal is sent to the optical synchronization unit through the photoelectric signal conversion module; the main control MCU is also connected with the monitoring unit through an optical fiber and is used for sending the pressure signal and the displacement signal of the hydraulic device, the pressure signal and the power signal of the hydraulic pump, which are received by the signal receiving and transmitting module, to the monitoring unit.
Further, the hydraulic device adopts a digital hydraulic cylinder, and the hydraulic device is controlled to move according to the pulse control signal; the hydraulic device includes: the device comprises a pushing hydraulic device 3, a jacking hydraulic device 7 and a traversing limiting hydraulic device 8, wherein the jacking hydraulic device 8 and a bridge span. The hydraulic control box is connected with one or more of a pushing hydraulic device 3, a jacking hydraulic device 7 and a traversing limit hydraulic device 8; for example, the hydraulic control box may be disposed on one side of the sliding track, and may control the plurality of pushing hydraulic devices 3, or the hydraulic control box may be disposed on a specific pier, and may control the plurality of jacking hydraulic devices 7 and the plurality of traversing limiting hydraulic devices 8.
Further, the displacement monitoring module monitors the whole displacement data of the bridge span in real time according to the displacement sensor at the top of the hydraulic device and the displacement sensor on the bridge span; the stress monitoring module monitors stress data born by the bridge span main body and the bridge pier main body in real time according to the stress sensor on the bridge span and the stress sensor on the bridge pier; and the hydraulic monitoring module is used for monitoring the pressure data of each hydraulic device and each hydraulic pump in real time. The stress sensor is an optical fiber stress sensor and is fixedly adhered to the bridge span main body structure and the bridge pier main body structure.
Further, the hydraulic synchronous pushing and sliding equipment control system further comprises a process display and alarm module, wherein the process display and alarm module is connected with the main controller, can display the whole process of the pushing and sliding operation of the bridge in real time according to the monitoring data received by the main controller, and gives an alarm to the abnormal monitoring data.
Further, the hydraulic synchronous pushing and sliding equipment control system further comprises a storage module, wherein the storage module is connected with the main controller and used for storing the monitoring data received by the main controller and the control command sent by the main controller.
In still another embodiment of the present invention, a control method of a hydraulic synchronous pushing and sliding device is also disclosed, and the control system of the hydraulic synchronous pushing and sliding device specifically includes the following steps:
step 1: as shown in fig. 2 and 3, a sliding rail 2 is fixedly installed on a sliding rail installation base surface 1, a to-be-pushed sliding bridge span or a part of bridge span section 5 is placed on a preset sliding rail 2, and a plurality of sliding bases 6 are arranged between the bridge span section 5 and the sliding rail 2; the pushing hydraulic device 3, the jacking hydraulic device 7 and the traversing limiting hydraulic device 8 are arranged at preset positions, wherein the pushing hydraulic device 3 is hinged with the bridge span section 5 through a pushing lug plate 4, a pulley trolley 9 is fixedly arranged at the top of the jacking sliding hydraulic device 7, and a sliding block is arranged between the traversing limiting hydraulic device 8 and the bridge span section 5; the displacement sensor and the stress sensor are then mounted to a preset position.
Step 2: initializing three-dimensional coordinates of each displacement sensor and stress sensor according to the three-dimensional construction model and the actual measurement coordinates of the sensors after the sensors are installed in place; setting pushing slip preset data, comprising: the method comprises the steps of pushing and sliding a preset position, pushing and sliding speed, safety threshold ranges of all stress sensors, pressure safety thresholds of all hydraulic devices and oil supply pressure values of all hydraulic pumps.
Step 3: the main controller calculates control pulse frequency, the movement direction of each hydraulic device and the control pulse number according to the displacement sensor and stress sensor coordinate data and combined with pushing slip preset data, and sends the control pulse frequency, the movement direction and the control pulse number to the corresponding hydraulic control box.
Step 4: after receiving the confirmation information sent by the hydraulic control box, the master controller sends a synchronous command to the optical synchronous unit, the optical synchronous unit sends an optical pulse signal, and the hydraulic control box controls the hydraulic device to synchronously move according to the control command and the optical pulse signal.
Step 5: the monitoring unit monitors displacement data, stress data and hydraulic data in the pushing and sliding process in real time, and when the data exceeds a threshold value, an alarm is sent out, and the main controller sends out a pause command; or a field worker manually sends out a pause command according to the field display and alarm module data, and adjusts preset data after detecting abnormality; and then the main controller calculates a new control command, sends the new control command to a corresponding hydraulic control box, and executes the operation step 4 until the bridge span or part of bridge span segments are pushed and slipped to a preset position.
Step 6: placing a new sliding bridge span section to be pushed on a preset position of a sliding track, connecting with the pushed section, and executing the steps 1-5; repeating steps 1-6 until all bridge span segments are pushed into place. And then, performing girder falling operation, sequentially pumping out cushion blocks below the jacking hydraulic device and cushion blocks between the bridge span base and the pier support in turn until all cushion blocks are removed, fixing the bridge span base and the pier support, and disassembling all pushing and sliding equipment.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control system for a hydraulic synchronous pushing and sliding device, which is characterized by comprising: the hydraulic system comprises a main controller, an optical synchronization unit, a hydraulic control box, a monitoring unit, a hydraulic device and a hydraulic pump;
the main controller is connected with the hydraulic control box through a CAN bus and sends a control command to the hydraulic control box; the main controller is also connected with the optical synchronization unit through a CAN bus and sends a synchronization command to the optical synchronization unit;
the optical synchronization unit is connected with the hydraulic control box through an optical fiber, and sends an optical pulse signal to the hydraulic control box according to the synchronization command;
the hydraulic control box is electrically connected with a hydraulic pump and a hydraulic device, and controls the power of the hydraulic pump and the oil supply pressure according to the control command; the hydraulic pump is connected with a plurality of hydraulic devices and is used for providing hydraulic oil for the hydraulic devices; the hydraulic control box controls the hydraulic device to move according to the control command and the optical pulse signal; the hydraulic control box also receives a pressure signal and a displacement signal fed back by the hydraulic device, and a pressure signal and a power signal fed back by the hydraulic pump;
the monitoring unit includes: the device comprises a displacement monitoring module, a stress monitoring module and a hydraulic monitoring module; the monitoring unit is connected with the main controller, monitoring data of the displacement monitoring module, the stress monitoring module and the hydraulic monitoring module are transmitted to the main controller in real time, and the main controller sends out a control command according to the real-time monitoring data and a slip operation set value.
2. The hydraulic synchronous pushing and sliding equipment control system according to claim 1, wherein the control command comprises: the serial number of the hydraulic device, the control direction and the pulse number corresponding to the serial number of the hydraulic device, the serial number of the hydraulic pump and the power and pressure value corresponding to the serial number of the hydraulic pump; the synchronization command includes a pulse frequency, a start command, and a stop command.
3. The hydraulic synchronous pushing and sliding equipment control system according to claim 1, wherein the hydraulic control boxes are plural, and the hydraulic control boxes comprise: the device comprises a main control MCU, a photoelectric signal conversion module and a signal receiving and transmitting module, wherein the photoelectric signal conversion module and the signal receiving and transmitting module are connected with the main control MCU;
the photoelectric signal conversion module is used for converting an optical pulse signal into an electric pulse signal, the main control MCU generates a control signal according to the electric pulse signal and the control command, and the control signal is sent to the hydraulic device with the corresponding serial number through the signal receiving and transmitting module;
the main control MCU is also connected with the monitoring unit through an optical fiber and is used for sending the pressure signal and the displacement signal of the hydraulic device, the pressure signal and the power signal of the hydraulic pump, which are received by the signal receiving and transmitting module, to the monitoring unit.
4. The control system of the hydraulic synchronous pushing and sliding equipment according to claim 1, wherein the hydraulic device adopts a digital hydraulic cylinder and is controlled to move according to a pulse control signal; the hydraulic device includes: the pushing hydraulic device, the jacking hydraulic device and the transverse movement limiting hydraulic device; the hydraulic control box is connected with one or more of a pushing hydraulic device, a jacking hydraulic device and a transverse movement limiting hydraulic device.
5. The control system of the hydraulic synchronous pushing and sliding equipment according to claim 1, wherein the displacement monitoring module monitors the whole displacement data of the bridge span in real time according to a displacement sensor at the top of the hydraulic device and a displacement sensor on the bridge span; the stress monitoring module monitors stress data born by the bridge span main body and the bridge pier main body in real time according to the stress sensor on the bridge span and the stress sensor on the bridge pier; and the hydraulic monitoring module is used for monitoring the pressure data of each hydraulic device and each hydraulic pump in real time.
6. The control system of a hydraulic synchronous pushing and sliding device according to claim 5, wherein the stress sensor is an optical fiber stress sensor fixedly attached to the bridge main structure and the bridge pier main structure.
7. The hydraulic synchronous pushing and sliding equipment control system according to claim 1, further comprising a process display and alarm module, wherein the process display and alarm module is connected with the main controller, and can display the whole process of the pushing and sliding operation of the bridge in real time according to the monitoring data received by the main controller and give an alarm to the abnormal monitoring data.
8. The control system of the hydraulic synchronous pushing and sliding equipment according to claim 1, further comprising a storage module, wherein the storage module is connected with the main controller and is used for storing monitoring data received by the main controller and control commands sent by the main controller.
9. A control method of a hydraulic synchronous pushing and sliding device, characterized in that the control method adopts the control system of the hydraulic synchronous pushing and sliding device according to any one of claims 1 to 8, and the control method comprises the following steps:
step 1: placing the bridge span to be pushed or part of bridge span sections on a preset sliding track, installing a pushing hydraulic device, a jacking hydraulic device and a traversing limiting hydraulic device to preset positions, and installing a displacement sensor and a stress sensor;
step 2: initializing three-dimensional coordinates of each displacement sensor and stress sensor according to the three-dimensional construction model and the actual measurement coordinates of the sensors after the sensors are installed in place; setting pushing slip preset data, comprising: the method comprises the steps of pushing and sliding a preset position, pushing and sliding speed, safety threshold ranges of all stress sensors, pressure safety thresholds of all hydraulic devices and oil supply pressure values of all hydraulic pumps;
step 3: the main controller calculates control pulse frequency, the movement direction of each hydraulic device and the control pulse number according to the coordinate data of the displacement sensor and the stress sensor and the pushing slip preset data, and sends the control pulse frequency, the movement direction and the control pulse number of each hydraulic device to the corresponding hydraulic control box;
step 4: after receiving the confirmation information sent by the hydraulic control box, the master controller sends a synchronous command to the optical synchronization unit, the optical synchronization unit sends an optical pulse signal, and the hydraulic control box controls the hydraulic device to synchronously move according to the control command and the optical pulse signal;
step 5: the monitoring unit monitors displacement data, stress data and hydraulic data in the pushing and sliding process in real time, when the data exceeds a threshold value, an alarm is sent, the main controller sends a pause command, then a new control command is calculated and obtained, the new control command is sent to a corresponding hydraulic control box, and the operation step 4 is executed until the bridge span or part of bridge span sections are pushed and slid to a preset position.
10. The control method of a hydraulic synchronous pushing and sliding device according to claim 9, wherein when the bridge span to be pushed and sliding is of a multi-stage structure, the control method further comprises:
step 6: placing a new sliding bridge span section to be pushed on a preset position of a sliding track, connecting with the pushed section, and executing the steps 1-5;
repeating steps 1-6 until all bridge span segments are pushed into place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311028098.7A CN116816774A (en) | 2023-08-15 | 2023-08-15 | Control system and control method for hydraulic synchronous pushing and sliding equipment |
Applications Claiming Priority (1)
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| CN202311028098.7A CN116816774A (en) | 2023-08-15 | 2023-08-15 | Control system and control method for hydraulic synchronous pushing and sliding equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117870776A (en) * | 2024-03-11 | 2024-04-12 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117870776A (en) * | 2024-03-11 | 2024-04-12 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
| CN117870776B (en) * | 2024-03-11 | 2024-06-11 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
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