Multi-point synchronous pushing intelligent regulation and correction system

Abstract

A multipoint synchronous pushing intelligent regulation and correction system belongs to the technical field of bridge engineering construction, and comprises a steel main beam, a plurality of pushing brackets uniformly distributed at the lower end of the steel main beam along the direction of the steel main beam, pushing mechanisms arranged on the left and right sides of the top ends of the pushing brackets, a sensor unit, a monitoring unit and a master control computer, the pushing support is connected with the bottom of the steel main beam through a pushing mechanism, the pushing mechanism comprises a ratchet block type pushing unit used for moving the steel main beam forwards, and the ratchet block type pushing unit is provided with a ratchet block tooth groove structure used for positioning the steel main beam and pushing the steel main beam forwards. The sensor unit is used for detecting the matching degree of the ratchet block tooth groove structure and the forward pushing pressure, the monitoring unit is arranged at the lower end of the steel main beam and used for detecting whether the steel main beam deviates or not, and the master control computer is configured to control the matching degree of the ratchet block tooth groove structure, the forward pushing pressure and deviation correction of the steel main beam. Synchronous pushing of the steel main beam in bridge engineering can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering construction, and specifically relates to a multi-point synchronous jacking intelligent control and deviation correction system. Background Art

[0002] As a bridge construction technology with the advantages of short construction period and little environmental impact, bridge jacking construction is currently widely used in the construction of large-span and high-height bridges. For beams with large volume and weight, multi-point jacking construction is usually adopted. While the jacking process is more stable, it can also make the overall force more reasonable. Multi-point synchronization in multi-point jacking is the top priority of the entire jacking process. Whether each jacking point is synchronized directly affects the construction accuracy and even construction safety. Therefore, it is necessary to invent a multi-point synchronous jacking intelligent control and correction system to solve the above problems. Summary of the invention

[0003] The invention discloses a multi-point synchronous jacking intelligent control and deviation correction system, aiming at solving the problems described in the background technology part.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] A multi-point synchronous jacking intelligent control and correction system includes: a steel main beam, a plurality of jacking brackets evenly distributed at the lower end of the steel main beam along the direction of the steel main beam, a jacking mechanism arranged on the left and right sides of the top of the jacking bracket, a sensor unit, a monitoring unit, and a master control computer. The jacking bracket is connected to the bottom of the steel main beam through the jacking mechanism. The jacking mechanism includes a ratchet block jacking unit for moving the steel main beam forward. The ratchet block jacking unit is provided with a ratchet block tooth groove structure for positioning the steel main beam and pushing the steel main beam forward. The sensor unit is used to detect the fit of the ratchet block tooth groove structure and the forward jacking pressure. The monitoring unit is arranged at the lower end of the steel main beam and is used to detect whether the steel main beam is offset. The master control computer is configured to control the fit of the ratchet block tooth groove structure, the forward jacking pressure, and the correction of the steel main beam.

[0006] Preferably, the jacking mechanism further comprises a plurality of jacking hydraulic jacks, slide beams and support plates arranged side by side in the front-to-back direction, the jacking hydraulic jacks are arranged in the longitudinal direction, the fixed end of the jacking hydraulic jacks is fixedly connected to the top of the jacking bracket, the telescopic ends are fixedly connected to the slide beam, the top of the slide beam is slidably connected to the support plate in the front-to-back direction, the top of the support plate abuts against the lower end of the steel main beam, the left and right ends of the support plate extend out of the left and right sides of the slide beam, the ratchet block jacking unit comprises a jacking hydraulic jack, the jacking hydraulic jack is arranged in the front-to-back direction Arranged on the left and right sides of the slide beam, the cylinder of the push hydraulic jack is fixedly connected to the top of the push bracket, and the end of the piston rod is fixedly connected to a sliding block. The ratchet block tooth groove structure includes a sliding groove arranged at the top of the sliding block in the longitudinal direction, a ratchet block slidably connected to the sliding groove, and a plurality of tooth grooves evenly distributed on the lower surface of the support plate in the front and rear directions. A compression spring is connected between the bottom end of the ratchet block and the bottom of the sliding groove. The shape and size of the ratchet block match the tooth groove. The rear end of the top of the ratchet block is provided with an inclined surface, and the inclined surface is used to squeeze the ratchet block out of the tooth groove when the ratchet block is pulled backward.

[0007] Preferably, the sensor unit includes a ratchet block extrusion force sensor arranged at the top of the tooth groove and a push pressure sensor arranged at the front side wall of the tooth groove. The ratchet block extrusion force sensor is used to detect whether the ratchet block is completely inserted into the tooth groove, and the push pressure sensor is used to detect the push force applied by the ratchet block to the front side wall of the tooth groove. The ratchet block extrusion force sensor and the push pressure sensor are respectively connected to the master control computer signal through wires.

[0008] Preferably, the hydraulic cylinder of the jacking hydraulic jack is provided with a cylinder pressure gauge for detecting the hydraulic oil pressure in the cylinder barrel, and the pipeline of the hydraulic cylinder of the jacking hydraulic jack is also provided with a cylinder pressure regulating valve. The cylinder pressure gauge and the cylinder pressure regulating valve are electrically connected to the master control computer through wires respectively.

[0009] Preferably, a cross beam is provided at the top of the pushing bracket, and the monitoring unit includes a laser javelin arranged at the middle part of the rear end of the lower surface of the steel main beam, and a laser target arranged at the middle part of the top end of the cross beam of the pushing bracket adjacent to the front of the laser javelin. The laser line emitted by the laser javelin is parallel to the center line of the front-to-back direction of the steel main beam in the longitudinal plane, and the laser target is provided with a 0 scale line. When the laser line is aligned with the 0 scale line, the 0 scale line is coplanar with the longitudinal plane, and the laser javelin is connected to the master control computer signal via a data cable.

[0010] Preferably, the jacking mechanism also includes a lateral jacking device, which includes a lateral jacking hydraulic jack and a correcting jacking hydraulic jack arranged at the top of the jacking bracket along the left and right directions, a roller base is provided at the bottom of the fixed end of the correcting jacking hydraulic jack, and the telescopic end of the correcting jacking hydraulic jack is movably connected to the bottom of the steel main beam, the fixed end of the lateral jacking hydraulic jack is fixedly connected to the top of the jacking bracket, and the telescopic end is fixedly connected to the roller base and the cylinder of the correcting jacking hydraulic jack.

[0011] A method for using a multi-point synchronous jacking intelligent control and deviation correction system comprises the following steps:

[0012] S1: Start the hydraulic jack to lift the steel main beam to the specified elevation;

[0013] S2: Using the lateral pushing device, based on the signal from the monitoring unit, the lateral deviation of the steel main beam is determined, and the steel main beam is straightened;

[0014] S3: The main control computer controls the action of the push hydraulic jack and obtains the reading of the ratchet block extrusion force sensor to confirm that each ratchet block falls into the corresponding tooth groove;

[0015] S4: Start the jacking hydraulic jack, and the data of the oil cylinder pressure gauges on both sides of the same jacking bracket are transmitted back to the main control computer in real time. The system adjusts the oil cylinder pressure speed regulating valve to adjust the oil cylinder pressure growth rate according to the feedback result, so that the oil cylinders of the jacking hydraulic jacks on the same jacking bracket reach the minimum pressure value required for jacking at the same time;

[0016] S5: When approaching the maximum mileage of a single jacking, the main control computer reduces the jacking speed and pushes slowly to the target point; during the process from the beginning of jacking to reaching the target point, if the jacking pressure sensor data on both sides of the same jacking bracket differ by more than 20%, the jacking is stopped immediately, which means that a failure has occurred in a certain jacking hydraulic jack, and its ratchet block is separated from the tooth groove. The failure should be eliminated immediately to reset the ratchet block to the corresponding tooth groove;

[0017] S6: After the steel main beam reaches the set target point, the top-pushing hydraulic jacks return asynchronously, that is, a part of the top-pushing hydraulic jacks return first to disengage the ratchet block from the tooth groove. When the ratchet block is engaged with the tooth groove adjacent to the rear side, another part of the top-pushing hydraulic jacks return, and finally all the ratchet blocks are engaged with the tooth groove adjacent to the rear side. The asynchronous return ensures that the ratchet block limits the support plate, thereby indirectly locating the position of the steel main beam.

[0018] S7: Repeat steps S2-S6 until the stage jacking is completed and the jacking hydraulic jack falls.

[0019] The beneficial effects of the multi-point synchronous pushing intelligent control and deviation correction system of the present invention are:

[0020] 1. The present invention can indirectly position the steel main beam through the ratchet block tooth groove structure on the one hand, and can push the support plate forward along the slide beam on the other hand, thereby moving the steel main beam forward. Without relative slippage between the steel main beam and the support plate, the stability of the position of the steel main beam during the advancement process is guaranteed to avoid deviation.

[0021] 2. The present invention is provided with a monitoring unit which can monitor the deviation of the steel main beam in real time. When the steel main beam deviates, the master control computer can reset the steel main beam in time through the lateral pushing device.

[0022] 3. The present invention can ensure that the jacking hydraulic jacks on the same jacking bracket maintain the same jacking force by controlling the cylinder pressure of the jacking hydraulic jack and the real-time detection of the sensor unit, thereby controlling the entire system in detail to achieve synchronous jacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the coordination and functional process of each part of the present invention;

[0024] Figure 2 It is a side view of the overall arrangement of the structural construction of the present invention;

[0025] Figure 3 It is a schematic diagram of the local structure of A of the present invention;

[0026] Figure 4 It is a rear view of the overall arrangement of the structure construction of the present invention;

[0027] Figure 5 It is a schematic diagram of the local structure of B of the present invention;

[0028] Figure 6 It is a schematic diagram of the working principle of the ratchet block type pushing unit of the present invention;

[0029] Figure 7 is a top view schematic diagram of the monitoring unit of the present invention;

[0030] Figure 8 is a side view schematic diagram of the monitoring unit of the present invention;

[0031] In the figure: 1. jacking mechanism; 2. jacking bracket; 3. monitoring unit; 31. laser javelin; 32. laser target; 4. steel main beam; 5. connecting rod connecting slideway beam and jacking bracket; 51. jacking pressure sensor; 52. ratchet block extrusion pressure sensor; 6. jack base; 7. jacking pressure sensor; 8. ratchet block extrusion pressure sensor; 9. inclined surface; 10. lateral jacking device; 101. lateral jacking hydraulic jack; 102. deviation correction jacking hydraulic jack; 11. jacking hydraulic jack; 12. jacking hydraulic jack; 121. cylinder pressure gauge; 122. cylinder pressure speed regulating valve; 13. compression spring; 14. ratchet block; 15. slideway beam; 16. support plate; 161. tooth groove; 17. slider. DETAILED DESCRIPTION

[0032] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] The following embodiments may be understood as individually expressing a part of a local structure or method of the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0034] Example 1

[0035] A multi-point synchronous jacking intelligent control and deviation correction system, comprising: Figure 2-5 As shown, a steel main beam 4, a plurality of jacking brackets 2 uniformly distributed at the lower end of the steel main beam 4 along the direction of the steel main beam 4, a jacking mechanism 1 arranged on the left and right sides of the top of the jacking bracket 2, a sensor unit, a monitoring unit 3, and a master control computer. The jacking bracket 2 is connected to the bottom of the steel main beam 4 through the jacking mechanism 1. The jacking mechanism 1 includes a ratchet block type jacking unit for moving the steel main beam forward. The ratchet block type jacking unit is provided with a ratchet block tooth groove structure for positioning the steel main beam and pushing the steel main beam 4 forward. The sensor unit is used to detect the fit of the ratchet block tooth groove structure and the forward pushing pressure. The monitoring unit is arranged at the lower end of the steel main beam 4 and is used to detect whether the steel main beam 4 is offset. The master control computer is configured to control the fit of the ratchet block tooth groove structure, the forward pushing pressure, and the deviation correction of the steel main beam.

[0036] In this embodiment, the ratchet block type pushing unit is provided with a ratchet block tooth groove structure for positioning the steel main beam and pushing the steel main beam 4 forward, which means: on the one hand, after the ratchet block tooth groove structure is closely matched, the position of the steel main beam can be indirectly positioned, and when the steel main beam does not slide relative to the upper end of the support plate, the steel main beam can be accurately positioned; thereby ensuring that the steel main beam will not deviate during the pushing process; on the other hand, after the ratchet block tooth groove structure is closely matched, the steel main beam can be indirectly pushed forward by the ratchet block pushing the tooth groove. For the extremely rare case that the steel main beam slides relative to the support plate, the present invention also provides a monitoring unit. Once a deviation occurs, the master control computer can correct the position of the steel main beam by controlling the lateral pushing device.

[0037] Example 2

[0038] like Figure 2-6 As shown, the jacking mechanism also includes a plurality of jacking hydraulic jacks 11, slide beams 15, and support plates 16 arranged side by side in the front-to-back direction. The jacking hydraulic jacks 11 are arranged longitudinally, and the fixed ends of the jacking hydraulic jacks 11 are fixedly connected to the top of the jacking bracket 2, and the telescopic ends are fixedly connected to the slide beams 15. The top of the slide beam 15 is slidably connected to the support plate 16 in the front-to-back direction, that is, the top of the slide beam is provided with a slide rail arranged in the front-to-back direction, and the support plate moves forward and backward along the slide rail, and the top of the support plate 16 is against the lower end of the steel main beam 4. In actual use, it should be The contact surfaces of the two have sufficient friction to prevent the steel main beam 4 from sliding on the top of the support plate 16; the left and right ends of the support plate 16 extend out of the left and right sides of the slide beam 15 to facilitate the connection of the push hydraulic jack 12. The ratchet block type push unit includes a push hydraulic jack 12, which is arranged on the left and right sides of the slide beam 15 along the front and rear directions. The cylinder of the push hydraulic jack 12 is fixedly connected to the top of the push bracket 2, and the end of the piston rod is fixedly connected to the slider 17. The ratchet block tooth groove structure includes a slide groove (such as Figure 6 As shown in the figure, not marked), a ratchet block 14 slidably connected to the slide groove, and a plurality of tooth grooves 161 evenly distributed on the lower surface of the support plate along the front-to-back direction, a compression spring 13 is connected between the bottom end of the ratchet block 14 and the bottom of the slide groove, the shape and size of the ratchet block 14 match the tooth groove 161, and the rear end of the top of the ratchet block 14 is provided with an inclined surface 9, and the inclined surface 9 is used to squeeze the ratchet block out of the tooth groove when the ratchet block is pulled backward.

[0039] In this embodiment, Figure 6As shown, after the ratchet block is stuck in the tooth groove, the push hydraulic jack applies force to push the support plate forward, and the support plate drives the steel main beam forward. After pushing for a distance, the piston rod of the push hydraulic jack contracts. Due to the action of the inclined surface, the compression spring retracts, the ratchet block retracts into the slide groove and disengages from the slot. When the ratchet block is stuck in the adjacent tooth groove on the rear side, the push hydraulic jack applies force again. This process is repeated repeatedly to achieve continuous forward movement of the steel main beam.

[0040] It should be noted that in order to ensure the sliding fit between the slider and the lower end of the steel main beam, a slide rail bracket can be set at the lower end of the slider, the bottom end of the slide rail bracket is fixed to the top end of the push bracket, and the top end of the slide rail bracket is slidingly matched with the slider, thereby ensuring the sliding fit between the slider and the bottom of the steel main beam, and then ensuring the fit between the ratchet block and the tooth groove.

[0041] Example 3

[0042] like Figure 6 As shown, the sensor unit includes a ratchet block extrusion force sensor 8 arranged at the top of the tooth groove 161 and a push pressure sensor 7 arranged at the front side wall of the tooth groove 161. The ratchet block extrusion force sensor 8 is used to detect whether the ratchet block 14 is completely inserted into the tooth groove 161. After being inserted, the elastic force of the compression spring will cause the ratchet block extrusion force sensor 8 to detect a pressure within a certain range, so that the master control computer can determine that the ratchet block is inserted into the tooth groove; the push pressure sensor 7 is used to detect the push force applied by the ratchet block 14 to the front side wall of the tooth groove 161, and by comparing the push forces of each ratchet block, it can be determined whether synchronous pushing is achieved; the ratchet block extrusion force sensor 8 and the push pressure sensor 7 are respectively connected to the master control computer signal through wires.

[0043] like Figure 6 As shown, the hydraulic cylinder of the jacking hydraulic jack 12 is provided with a cylinder pressure gauge 121 for detecting the hydraulic oil pressure in the cylinder barrel, and the pipeline of the hydraulic cylinder of the jacking hydraulic jack 12 is also provided with a cylinder pressure regulating valve 122. The cylinder pressure gauge 121 and the cylinder pressure regulating valve 122 are electrically connected to the master control computer through wires respectively.

[0044] In this embodiment, the thrust of the jacking hydraulic jacks can also be controlled by detecting the hydraulic oil pressure and controlling the oil supply speed of the hydraulic oil in the pipeline to ensure that each jacking hydraulic jack pushes synchronously.

[0045] Example 4

[0046] like Figure 4 , 7As shown in Figure 8, a crossbeam is provided at the top of the pushing bracket, and the monitoring unit includes a laser javelin 31 provided at the middle of the rear end of the lower surface of the steel main beam 4, and a laser target 32 ​​provided at the middle of the top of the crossbeam of the pushing bracket adjacent to the front of the laser javelin 31. The laser line emitted by the laser javelin 31 is parallel to the center line of the front-to-back direction of the steel main beam 4 in the longitudinal plane, so it can calibrate the orientation of the steel main beam. The laser target 32 ​​is provided with a 0 scale line. When the laser line is aligned with the 0 scale line, the 0 scale line is coplanar with the longitudinal plane, that is, at this time the steel main beam 4 is located at the set pushing position and has not deviated. The laser javelin is connected to the master control computer signal via a data line.

[0047] It can be understood that when the laser line deviates from the 0 scale line, it means that the position of the steel main beam has shifted. The master control computer can receive the signal in time and make corrections.

[0048] Example 5

[0049] like Figure 4 , 5 As shown, the pushing mechanism also includes a lateral pushing device 10, which includes a lateral pushing hydraulic jack 101 and a deviation correction lifting hydraulic jack 102 arranged at the top of the pushing bracket 2 along the left and right directions, and the bottom of the fixed end of the deviation correction lifting hydraulic jack 102 is provided with a roller base (such as Figure 5 As shown in the figure (not marked), the telescopic end of the correcting and lifting hydraulic jack 102 is movably connected to the bottom of the steel main beam 4, the fixed end of the lateral pushing hydraulic jack 101 is fixedly connected to the top of the pushing bracket 2, and the telescopic end is fixedly connected to the roller base and the cylinder of the correcting and lifting hydraulic jack 102.

[0050] In this embodiment, when an unexpected situation occurs and the steel main beam and the support plate slip relative to each other, it can be identified in time by the monitoring unit. At this time, the main control computer can start the corresponding lateral pushing hydraulic jack 101 and the correcting lifting hydraulic jack 102. On the one hand, the steel main beam is lifted up and separated from the support plate by the correcting lifting hydraulic jack 102. On the other hand, the lateral pushing hydraulic jack 101 is used to indirectly control the left and right displacement of the steel main beam until the laser javelin is aligned with the 0 scale line, and then the steel main beam is replaced on the top of the support plate.

[0051] Example 6

[0052] In this embodiment, the left side of the 0 scale line of the laser target 32 ​​is negative and the right side is positive. The master control computer 6 should have the functions of automatic data reception, processing judgment, and feedback. The automatic reception function is that the computer stores the data fed back by each sensor in the hard disk, the processing judgment function is that the software program based on the self-compiled code reads the data in the hard disk and makes a judgment through a series of codes, and the feedback function is that the computer sends instructions to related mechanical equipment according to the judgment result to intelligently control the construction. When the laser target scale pointed by the laser line is a negative value, it is judged that the front end of the beam body is biased to the left, otherwise it is biased to the right, and the master control computer controls the horizontal jacking device to correct the deviation.

[0053] Example 7

[0054] Based on the above embodiments, this embodiment discloses a method for using a multi-point synchronous jacking intelligent control and correction system, such as Figure 1-8 As shown, the following steps are included:

[0055] S1: Start the lifting hydraulic jack 11 to lift the steel main beam 4 to the specified elevation;

[0056] S2: using the lateral pushing device 10, based on the signal of the monitoring unit, determining the lateral deviation of the steel main beam, and straightening the steel main beam;

[0057] S3: the main control computer 6 controls the action of the push hydraulic jack and obtains the reading of the ratchet block extrusion force sensor 52 to confirm that each ratchet block 14 falls into the corresponding tooth groove;

[0058] S4: Start the jacking hydraulic jack 12, and the data of the oil cylinder pressure gauges 121 on both sides of the same jacking bracket are transmitted back to the main control computer 6 in real time. The system adjusts the oil cylinder pressure speed regulating valve 122 to adjust the oil cylinder pressure growth rate according to the feedback result, so that the oil cylinders of the jacking hydraulic jacks 12 on the same jacking bracket simultaneously reach the minimum pressure value required for jacking;

[0059] S5: When approaching the maximum mileage of a single jacking, the master control computer 6 reduces the jacking speed and pushes slowly to the target point; during the process of starting jacking to reaching the target point, if the data of the jacking pressure sensors 51 on both sides of the same jacking bracket differ by more than 20%, the jacking is stopped immediately, which means that a failure occurs in a certain jacking hydraulic jack 12, and its ratchet block is separated from the tooth groove. The failure should be eliminated immediately to reset the ratchet block to the corresponding tooth groove;

[0060] S6: After the steel main beam reaches the set target point, the top-pushing hydraulic jack 12 returns asynchronously, that is, a part of the top-pushing hydraulic jack returns first to disengage the ratchet block from the tooth groove, and when the ratchet block is engaged with the tooth groove adjacent to the rear side, another part of the top-pushing hydraulic jack 12 returns, and finally all the ratchet blocks are engaged with the tooth groove adjacent to the rear side; the ratchet block is limited to the support plate by the asynchronous return, thereby indirectly locating the position of the steel main beam;

[0061] S7: Repeat steps S2-S6 until the stage jacking is completed and the jacking hydraulic jack 11 falls.

[0062] Working principle: In multi-point jacking using a ratchet block type jacking device, a ratchet block extrusion force sensor is set in the tooth groove. After the ratchet block is squeezed into the tooth groove, the ratchet block extrusion force sensor shows a reading within the set range, which can determine that the ratchet block is stuck in the tooth groove. The values ​​of the cylinder pressure gauge and the jacking pressure sensor 7 are used as the basis for synchronous jacking. The cylinder pressure speed regulating valve can be used to adjust so that all jacking cylinders reach the minimum jacking pressure value at the same time. Multiple sets of jacking devices can synchronously push the beam forward. During jacking, if the cylinder pressure gauge or the jacking pressure sensor 7 shows a sharp drop in readings, it means that some ratchet blocks are out of the tooth groove and cannot be pushed synchronously. The jacking process should be stopped immediately and troubleshooting should be carried out. The laser javelin of the monitoring unit is used to locate the center line of the steel main beam. The laser target reading feedback is used to determine whether the beam body is offset and the offset direction, and the horizontal jacking device is used to correct the deviation in time. When the steel main beam does not undergo relative displacement with the support plate, the cooperation between the ratchet block and the tooth groove can not only indirectly realize the positioning of the steel main beam, but also realize the pushing action of the steel main beam. After the steel main beam reaches the set target point, the asynchronous return stroke of the top-pushing hydraulic jack 12 can ensure the effect of indirect positioning of the steel main beam and reduce the probability of the steel main beam being offset.

Claims

1. A multi-point synchronous pushing intelligent control and correction system, characterized by: include: A steel main beam, a plurality of jacking brackets evenly distributed at the lower end of the steel main beam along the direction of the steel main beam, a jacking mechanism arranged on the left and right sides of the top of the jacking bracket, a sensor unit, a monitoring unit, and a master control computer. The jacking bracket is connected to the bottom of the steel main beam through the jacking mechanism. The jacking mechanism includes a ratchet block type jacking unit for moving the steel main beam forward. The ratchet block type jacking unit is provided with a ratchet block tooth groove structure for positioning the steel main beam and pushing the steel main beam forward. The sensor unit is used to detect the fit of the ratchet block tooth groove structure and the forward pushing pressure. The monitoring unit is arranged at the lower end of the steel main beam and is used to detect whether the steel main beam is offset. The master control computer is configured to control the fit of the ratchet block tooth groove structure, the forward pushing pressure, and the deviation correction of the steel main beam.

2. A multi-point synchronous jacking intelligent control and deviation correction system as claimed in claim 1, characterized in that: The jacking mechanism also includes a plurality of jacking hydraulic jacks, slide beams, and support plates arranged side by side in the front-to-back direction. The jacking hydraulic jacks are arranged longitudinally, and the fixed ends of the jacking hydraulic jacks are fixedly connected to the top of the jacking bracket, and the telescopic ends are fixedly connected to the slide beam. The top of the slide beam is slidably connected to the support plate in the front-to-back direction, and the top of the support plate abuts against the lower end of the steel main beam. The left and right ends of the support plate extend out of the left and right sides of the slide beam. The ratchet block jacking unit includes a jacking hydraulic jack, and the jacking hydraulic jacks are arranged in the front-to-back direction. On the left and right sides of the slide beam, the cylinder of the push hydraulic jack is fixedly connected to the top of the push bracket, and the end of the piston rod is fixedly connected to a sliding block. The ratchet block tooth groove structure includes a sliding groove arranged at the top of the sliding block in the longitudinal direction, a ratchet block slidably connected to the sliding groove, and a plurality of tooth grooves evenly distributed on the lower surface of the support plate in the front and rear directions. A compression spring is connected between the bottom end of the ratchet block and the bottom of the sliding groove. The shape and size of the ratchet block match the tooth groove. The rear end of the top of the ratchet block is provided with an inclined surface, and the inclined surface is used to squeeze the ratchet block out of the tooth groove when the ratchet block is pulled backward.

3. A multi-point synchronous jacking intelligent control and deviation correction system as claimed in claim 2, characterized in that: The sensor unit includes a ratchet block extrusion force sensor arranged at the top of the tooth groove and a push pressure sensor arranged at the front side wall of the tooth groove. The ratchet block extrusion force sensor is used to detect whether the ratchet block is completely inserted into the tooth groove, and the push pressure sensor is used to detect the push force applied by the ratchet block to the front side wall of the tooth groove. The ratchet block extrusion force sensor and the push pressure sensor are respectively connected to the master control computer signal through wires.

4. A multi-point synchronous jacking intelligent control and deviation correction system as claimed in claim 3, characterized in that: The hydraulic cylinder of the jacking hydraulic jack is provided with a cylinder pressure gauge for detecting the hydraulic oil pressure in the cylinder barrel, and the pipeline of the hydraulic cylinder of the jacking hydraulic jack is also provided with a cylinder pressure regulating valve. The cylinder pressure gauge and the cylinder pressure regulating valve are electrically connected to the master control computer through wires respectively.

5. A multi-point synchronous jacking intelligent control and deviation correction system as claimed in claim 4, characterized in that: A cross beam is provided at the top of the pushing bracket, and the monitoring unit includes a laser javelin arranged at the middle of the rear end of the lower surface of the steel main beam, and a laser target arranged at the middle of the top of the cross beam of the pushing bracket adjacent to the front of the laser javelin. The laser line emitted by the laser javelin is parallel to the center line of the front-to-back direction of the steel main beam in the longitudinal plane, and the laser target is provided with a 0 scale line. When the laser line is aligned with the 0 scale line, the 0 scale line is coplanar with the longitudinal plane, and the laser javelin is connected to the master control computer signal via a data cable.

6. A multi-point synchronous jacking intelligent control and deviation correction system as claimed in claim 5, characterized in that: The pushing mechanism also includes a lateral pushing device, which includes a lateral pushing hydraulic jack and a correcting lifting hydraulic jack arranged at the top of the pushing bracket along the left and right directions. A roller base is provided at the bottom of the fixed end of the correcting lifting hydraulic jack, and the telescopic end of the correcting lifting hydraulic jack is movably connected to the bottom of the steel main beam. The fixed end of the lateral pushing hydraulic jack is fixedly connected to the top of the pushing bracket, and the telescopic end is fixedly connected to the roller base and the cylinder of the correcting lifting hydraulic jack.

7. The method for using the multi-point synchronous jacking intelligent control and deviation correction system according to claim 6, characterized in that: The following steps are involved: S1: Start the hydraulic jack to lift the steel main beam to the specified elevation; S2: Using the lateral pushing device, based on the signal from the monitoring unit, the lateral deviation of the steel main beam is determined, and the steel main beam is straightened; S3: The main control computer controls the action of the push hydraulic jack and obtains the reading of the ratchet block extrusion force sensor to confirm that each ratchet block falls into the corresponding tooth groove; S4: Start the jacking hydraulic jack, and the data of the oil cylinder pressure gauges on both sides of the same jacking bracket are transmitted back to the main control computer in real time. The system adjusts the oil cylinder pressure speed regulating valve to adjust the oil cylinder pressure growth rate according to the feedback result, so that the oil cylinders of the jacking hydraulic jacks on the same jacking bracket reach the minimum pressure value required for jacking at the same time; S5: When approaching the maximum mileage of a single jacking, the main control computer reduces the jacking speed and pushes slowly to the target point; during the process from the beginning of jacking to reaching the target point, if the jacking pressure sensor data on both sides of the same jacking bracket differ by more than 20%, the jacking is stopped immediately, which means that a failure has occurred in a certain jacking hydraulic jack, and its ratchet block is separated from the tooth groove. The failure should be eliminated immediately to reset the ratchet block to the corresponding tooth groove; S6: After the steel main beam reaches the set target point, the top-pushing hydraulic jacks return asynchronously, that is, a part of the top-pushing hydraulic jacks return first to disengage the ratchet block from the tooth groove. When the ratchet block is engaged with the tooth groove adjacent to the rear side, another part of the top-pushing hydraulic jacks return, and finally all the ratchet blocks are engaged with the tooth groove adjacent to the rear side. The asynchronous return ensures that the ratchet block limits the support plate, thereby indirectly locating the position of the steel main beam. S7: Repeat steps S2-S6 until the stage jacking is completed and the jacking hydraulic jack falls.

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