Numerical control bridge rotation overturn-preventing device

Abstract

The utility model discloses a numerical control bridge rotation anti-overturning device which comprises a plurality of numerical control hydraulic supporting foot assemblies and a control system, the lower ends of the numerical control hydraulic supporting foot assemblies are arranged on a rotary table sliding way on the periphery of a support, and the upper ends of the numerical control hydraulic supporting foot assemblies are fixed to the lower end of a bridge upper buttress through connecting plates; the numerical control hydraulic supporting foot assembly comprises a supporting foot sliding plate, a spherical hinge support and a numerical control hydraulic jack. A base of the numerical control hydraulic jack is fixed on the connecting plate, a piston rod of the numerical control hydraulic jack is mounted on a spherical hinge support, and the spherical hinge support is mounted on the supporting foot sliding plate; a height measuring assembly is arranged on the outer side of the numerical control hydraulic jack, a displacement sensor is installed on the height measuring assembly, and the control system is electrically connected with the numerical control hydraulic jack and the displacement sensor. The numerical control hydraulic supporting foot assembly, the numerical control pull rod assembly, the numerical control supporting and locking assembly and the numerical control swivel driving assembly are comprehensively controlled through the control system, the swivel bridge can be stably supported in a coordinated linkage mode, and the overturning risk in the bridge swivel process is reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge rotation, and particularly relates to a numerical control bridge rotation anti-overturning device and a system thereof. Background Technique

[0002] With the continuous development of science and technology, new processes have continuously emerged in bridge construction technology, and rotation construction is one of them. Bridge rotation construction refers to a construction method in which a bridge structure is fabricated (cast or spliced) at a non-design axis position and then rotated into place. It can convert the operation over obstacles into an operation on the shore or near the ground. According to the rotation direction of the bridge structure, it can be divided into vertical rotation construction method, horizontal rotation construction method (abbreviated as vertical rotation method and horizontal rotation method, and the horizontal rotation method is divided into two types: rotation at the top of the pier and rotation at the bottom of the pier), and the method of combining horizontal rotation and vertical rotation. Among them, the horizontal rotation method is the most widely used. Bridge rotation construction is applicable to special river channels that span deep valleys and rapid currents and are difficult to hoist, and has the characteristics of saving hoisting costs, being safe, reliable, and having good integrity. Recently, more and more railway-crossing and highway-crossing bridges have started to use the rotation construction method, which has the characteristics of not affecting the normal transportation of railways or highways, saving a large amount of support wood or steel, being safe, reliable, and reducing construction difficulty.

[0003] However, due to the large tonnage of the bridge, during the rotation process, in addition to the support of the central bearing, several supporting feet need to be arranged outside the bearing for support. The supporting feet rotate with the bridge through the slideway and support the bridge. In order to prevent the gap between the supporting feet and the slideway from changing during rotation, resulting in jamming, therefore, a certain gap is reserved between the supporting feet and the slideway, and several layers of cushion plates are inserted into the gap. When the gap between the supporting feet and the slideway becomes smaller and jams, one layer or several layers of cushion plates are removed as needed. However, this will cause the support at this place to be insufficient when it rotates to a place with a larger gap, resulting in the bridge tilting, unable to be aligned, and even overturning in severe cases. At the same time, when the cushion plate rotates with the supporting feet, it will move to a certain extent, and even move out of the supporting feet, resulting in the loss of support at this place of the bridge and even overturning in severe cases. Content of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a numerical control bridge rotation anti-overturning device. The technical problems to be solved by the utility model are realized through the following technical solutions:

[0005] A numerically controlled anti-overturning device for bridge rotation, comprising a plurality of numerically controlled hydraulic support leg assemblies and a control system. The lower ends of the numerically controlled hydraulic support leg assemblies are arranged on the turntable slideway outside the bearing, and the upper ends are fixed to the lower end of the upper pier of the bridge through connecting plates. The upper pier of the bridge is connected to the bridge to be rotated. The numerically controlled hydraulic support leg assembly includes a support leg slide plate, a spherical hinge support, and a numerically controlled hydraulic jack. The base of the numerically controlled hydraulic jack is fixed to the connecting plate, and its piston rod is installed on the spherical hinge support, and the spherical hinge support is installed on the support leg slide plate. A height measurement component is arranged outside the numerically controlled hydraulic jack. The height measurement component includes a slide rail vertically arranged on the support leg slide plate. A slider is connected to the slide rail. The slider is connected to the connecting plate through a connecting rod, and a displacement sensor is installed on the slider. The control system is electrically connected to the numerically controlled hydraulic jack and the displacement sensor respectively. When the bridge tilts during the rotation process, the slider at this place will generate a displacement along the slide rail. At this time, the displacement sensor sends the generated displacement signal to the control system, and the control system controls the numerically controlled hydraulic jack at the corresponding position to adjust the height.

[0006] Further, an electronic digital display height measuring instrument that can rotate with the upper pier of the bridge is installed between the turntable slideway on one side of the support leg slide plate and the connecting plate. When the bridge rotates, the electronic digital display height measuring instrument can move to measure the distance between the connecting plate and the turntable slideway.

[0007] Further, it also includes a plurality of numerically controlled tie rod assemblies. The numerically controlled tie rod assemblies are arranged at the lower end of the upper pier of the bridge outside the turntable slideway, and include a length-adjustable tie rod connected to the upper pier of the bridge. A tension numerical control encoder is arranged on the tie rod, and the tension numerical control encoder is electrically connected to the control system. The lower end of the tie rod is fixed with a portal connecting frame. Relatively fixed limit rollers are arranged on the inner side of the portal connecting frame. The upper end of the I-shaped limit slide rail fixed on the ground base layer extends into the portal connecting frame and is located between the limit rollers. The I-shaped limit slide rail cooperates with the limit rollers and the portal connecting frame, so as to movably connect the tie rod in the I-shaped limit slide rail.

[0008] Further, it also includes a numerically controlled support locking component. A support pier is arranged below the upper pier of the bridge outside the numerically controlled tie rod assembly, and the numerically controlled support locking component is installed between the upper pier of the bridge and the support pier.

[0009] Furthermore, the CNC support and locking assembly includes a base and a CNC hydraulic cylinder hinged on both sides of the upper end of the base; a first wedge plate and a second wedge plate are arranged on the base, and a piston rod of the CNC hydraulic cylinder is respectively connected to the first wedge plate and the second wedge plate, and the inclined surface of the first wedge plate faces downward and abuts against the inclined surface of the second wedge plate, so that the overall upper end surface of the first wedge plate and the second wedge plate is a plane; the two CNC hydraulic cylinders are electrically connected to the control system, and the two CNC hydraulic cylinders are controlled simultaneously by the control system, thereby controlling the extension and retraction of their piston rods, driving the relative sliding of the first wedge plate and the second wedge plate, and finally adjusting the overall height of the CNC support and locking assembly, thereby controlling the separation and connection of the pier and the supporting pier on the bridge.

[0010] Furthermore, a rubber support plate is fixed to the upper end surface of the first wedge-shaped plate.

[0011] Furthermore, a polytetrafluoroethylene slide plate is provided at the lower end of the leg support slide plate.

[0012] Furthermore, the numerically controlled hydraulic legs, mechanical legs and sand boxes are alternately arranged on the turntable slide.

[0013] Furthermore, the upper pier of the bridge is connected to a numerically controlled rotating drive assembly, and the numerically controlled rotating drive assembly is electrically connected to the control system for driving the bridge to rotate under the control of the control system.

[0014] Beneficial effects of the utility model:

[0015] 1. Through the cooperation between the CNC hydraulic support foot assembly and the height measurement assembly, the displacement sensor in the height measurement assembly senses the offset displacement of the rotating bridge and sends it to the control system. The control system automatically adjusts the telescopic length of the piston rod in the CNC hydraulic support foot assembly according to the offset displacement, so that the CNC hydraulic support foot assembly can always stably support the bridge, thereby reducing the risk of overturning during the rotation of the bridge;

[0016] 2. Install a CNC hydraulic support foot assembly on the swivel slideway, and install a CNC pull rod assembly and a CNC support locking assembly on the outside thereof. The CNC hydraulic support foot assembly is installed on the turntable slideway outside the swivel support, and is arranged alternately with the conventionally used mechanical support feet and sand boxes to provide bridge force monitoring and anti-overturning support during the construction of the swivel bridge and the rotation of the bridge. The CNC hydraulic support foot assembly, CNC pull rod assembly, CNC support locking assembly and CNC swivel drive assembly are comprehensively controlled through the control system, which can coordinate and link to provide stable support for the swivel bridge and minimize the risk of overturning during the rotation of the bridge, thereby improving the construction quality and ensuring construction safety.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the numerically controlled anti-overturning device for bridge rotation

[0019] Figure 2 It is a schematic diagram of the structure of the numerically controlled hydraulic support foot assembly

[0020] Figure 3 It is a schematic diagram of the structure of the numerically controlled tie rod assembly

[0021] Figure 4 It is a schematic diagram of the structure of the numerically controlled support locking assembly

[0022] Figure 5 It is a schematic top view structure diagram of the numerically controlled anti-overturning device for bridge rotation

[0023] Figure 6 It is a schematic diagram of the structure of the control part of the present invention

[0024] Description of the reference numerals:

[0025] 1 - Control system; 2 - Numerically controlled hydraulic support foot assembly; 3 - Rotating support; 4 - Turntable slideway; 5 - Connecting plate; 6 - Upper pier connecting pier; 7 - Upper pier formwork connecting plate; 8 - Bridge upper pier; 9 - Height measuring assembly; 10 - Mechanical support foot; 11 - Sand box; 12 - Support foot height locking assembly; 13 - Electronic digital display height measuring instrument; 14 - Numerically controlled tie rod assembly; 15 - Numerically controlled support locking assembly; 16 - Support pier; 17 - Spare pier; 18 - Polytetrafluoroethylene slide plate; 19 - Numerically controlled rotating drive assembly; 2 - 1 - Support foot slide plate; 2 - 2 - Spherical hinge support; 2 - 3 - Numerically controlled hydraulic jack; 3 - 1 - Vertical displacement sensor; 3 - 2 - Rotary displacement sensor; 3 - 3 - Force sensor; 4 - 1 - Embedded bracket; 9 - 1 - Slide rail; 9 - 2 - Slide block; 9 - 3 - Connecting rod; 9 - 4 - Displacement sensor; 12 - 1 - First screw; 12 - 2 - Second screw; 12 - 3 - Adjusting nut; 14 - 1 - Tie rod; 14 - 2 - Embedded part; 14 - 3 - Nut; 14 - 4 - Tensile numerically controlled encoder; 14 - 5 - Gantry connecting frame; 14 - 6 - Limit roller; 14 - 7 - I-shaped limit slide rail; 14 - 8 - Slide rail embedded part; 15 - 1 - Base; 15 - 2 - Numerically controlled hydraulic cylinder; 15 - 3 - First wedge plate; 15 - 4 - Second wedge plate; 15 - 5 - Rubber support plate Detailed implementation manners

[0026] The following further describes the present invention in detail with specific embodiments, but the implementation manners of the present invention are not limited thereto

[0027] Please refer to Figures 1 to 6, an embodiment of the present utility model provides a numerical control anti-overturning device for bridge rotation. The anti-overturning device is arranged along the outer periphery of the bridge rotation support. Specifically, it includes a control system 1 and a number of numerical control hydraulic support leg assemblies 2. The lower end of the numerical control hydraulic support leg assembly 2 is arranged on the turntable slideway 4 outside the rotation support 3, and the upper end is fixed on the upper pier connecting pier 6 through a connecting plate 5. The upper pier connecting pier 6 is connected to the bridge upper pier 8 through an upper pier formwork connecting plate 7, and the bridge upper pier 8 is connected to the bridge to be rotated; the numerical control hydraulic support leg assembly 2 includes a support leg slide plate 2-1, a spherical hinge support 2-2, and a numerical control hydraulic jack 2-3; the hydraulic cylinder of the numerical control hydraulic jack 2-3 is fixed on the connecting plate 5, and its piston rod is installed on the spherical hinge support 2-2, and the spherical hinge support 2-2 is installed on the support leg slide plate 2-1. A number of embedded brackets 4-1 are arranged at the lower end of the turntable slideway 4.

[0028] A height measurement component 9 is arranged outside the numerical control hydraulic jack 2-3. The height measurement component 9 includes a slide rail 9-1 vertically arranged on the support leg slide plate 2-1. A slider 9-2 is connected to the slide rail 9-1. The slider 9-2 is connected to the connecting plate 5 through a connecting rod 9-3, and a displacement sensor 9-4 is installed on the slider 9-2.

[0029] The control system 1 is electrically connected to the numerical control hydraulic jack 2-3 and the displacement sensor 9-4 respectively. When the bridge tilts during the rotation process, the slider 9-2 at this place will generate a displacement along the slide rail 9-1. At this time, the displacement sensor 9-4 sends the generated displacement signal to the control system 1, and the control system 1 controls the numerical control hydraulic jack 2-3 at the corresponding position to adjust the height.

[0030] By controlling the numerical control hydraulic jack 2-3 through the control system 1, its piston rod extends downward so that the support leg slide plate 2-1 is in close contact with the turntable slideway 4, and then the bridge upper pier 8 is in close contact with the turntable slideway 4 to support the upper structure of the rotating bridge. When the center of gravity of the beam shifts due to special circumstances during the bridge rotation process, the displacement sensor 9-4 will send a corresponding signal to the control system 1. The control system 1 controls the numerical control hydraulic jack 2-3 to provide different jacking forces for the bridge, ensuring that the numerical control hydraulic jacks 2-3 at each place can always reliably support the bridge, thereby eliminating the influence of the shift, adjusting the gravity difference at both ends of the bridge, keeping the center of gravity of the bridge stable, and enabling it to complete the rotation process smoothly.

[0031] Preferably, in order to reduce the enterprise cost and improve the rotation efficiency at the same time, the numerical control hydraulic support leg assemblies 2 are arranged alternately with the commonly used mechanical support legs 10 and sand boxes 11 on the turntable slideway 4. The commonly used mechanical support legs 10 and sand boxes 11 belong to the prior art, and the present utility model will not elaborate on their structures here.

[0032] In addition, before the bridge is placed on the bearings and piers, the position is adjusted in place and there is no rotation, in order to prevent the piston rod of the numerically controlled hydraulic jack 2-3 from being displaced by external forces, which may affect the overall stability of the bridge. A pier height locking assembly 12 is vertically fixed between the pier slide plate 2-1 and the connecting plate 5, and the support height of the numerically controlled hydraulic jack 2-3 is locked by using the pier height locking assembly 12. Specifically, the pier height locking assembly 12 includes a first screw 12-1 provided on the pier slide plate 2-1 and a second screw 12-2 fixed to the connecting plate 5. The first screw 12-1 and the second screw 12-2 are arranged opposite to each other up and down and are connected in the middle by an adjusting nut 12-3. By rotating the adjusting nut 12-3 clockwise or counterclockwise, the height of the pier height locking assembly 12 is adjusted to an appropriate position, and the distance between the connecting plate 5 and the pier slide plate 2-1 is locked. When the rotating bearing 3 rotates, the pier height locking assembly 12 rotates together with the rotating bearing 3.

[0033] Furthermore, an electronic digital display height measuring instrument 13 that can rotate with the upper pier 8 of the bridge is installed between the turntable slideway 4 on one side of the pier slide plate 2-1 and the connecting plate 5. The electronic digital display height measuring instrument 13 is rollingly connected to the turntable slideway 4. When the bridge rotates, the electronic digital display height measuring instrument 13 can move to measure the distance change between the connecting plate 5 and the turntable slideway 4, that is, the distance change between the upper pier 8 of the bridge and the turntable slideway 4. When the upper pier 8 of the bridge tilts to one side, the vertical distance of the measuring point on the other side will increase, and when it tilts to the other side, the vertical distance of the measuring point on one side will decrease. The overall attitude change during the bridge rotation can be measured at any time by the digital display height measuring instrument and adjusted in time by the numerically controlled hydraulic jack 2-3.

[0034] Furthermore, the anti-overturning device also includes a plurality of CNC pull rod assemblies 14, which are arranged on the ground foundation layer outside the turntable slide 4 and are arranged around the bottom foundation layer, and are installed at the lower end of the bridge pier 8; specifically, the CNC pull rod assembly 14 includes a length-adjustable pull rod 14-1 connected to the bridge pier 8, and the pull rod 14-1 is connected to the bridge pier 8 through an embedded part 14-2 at the upper end. The pull rod 14-1 is composed of two screws opposite to each other up and down, and a nut 14-3 located between the two screws. The initial length of the pull rod 14-1 is adjusted by adjusting the rotation direction of the nut 14-3. The pull rod 14-1 is also provided with a tension CNC encoder 14-4, which is electrically connected to the control system 1; when one side is offset during the bridge rotation process, the corresponding tension CNC encoder 14-4 sends the tension or pressure received to the control system 1, and the control system 1 controls the CNC hydraulic jack 2-3 to make adjustments. A door-type connecting frame 14-5 is fixed at the lower end of the pull rod 14-1, and a limiting roller 14-6 is relatively fixed on the inner side of the door-type connecting frame 14-5. An I-shaped limiting slide rail 14-7 fixed on the ground foundation layer extends into the door-type connecting frame 14-5 and is located between the limiting rollers 14-6. The I-shaped limiting slide rail 14-7 cooperates with the limiting rollers 14-6 and the door-type connecting frame 14-5, so that the pull rod 14-1 is movably connected to the I-shaped limiting slide rail 14-7. The I-shaped limit slide rail 14-7 is arranged on the slide rail embedded part 14-8; when the bridge rotates, it drives the pier 8 on the bridge to rotate, and the pull rod 14-1, the door-type connecting frame 14-5, and the limit roller 14-6 rotate together along the I-shaped limit slide rail 14-7, and the limit roller 14-6 interacts with the I-shaped limit slide rail 14-7 to provide static or dynamic support force and anti-overturning pulling force for the bridge, further reducing the overturning risk during the rotation of the bridge.

[0035] Furthermore, the anti-overturning device also includes a numerical control support locking assembly 15, a support pier 16 is provided below the bridge upper pier 8 outside the numerical control tie rod assembly 14, and the numerical control support locking assembly 15 is installed between the bridge upper pier 8 and the support pier 16. The support pier 16 is a plurality of independent piers provided along the turntable on the outside of the turntable slideway 4, which provide support for the bridge upper pier 8 when the bridge is under construction and waiting for rotation, thereby improving the safety of the bridge during construction and rotation.

[0036] Specifically, the numerically controlled support locking assembly 15 includes a base 15-1. On both sides of the upper end of the base 15-1, numerically controlled hydraulic cylinders 15-2 are respectively hinged. A first wedge plate 15-3 and a second wedge plate 15-4 are arranged on the base 15-1. The piston rods of the numerically controlled hydraulic cylinders 15-2 are respectively connected to the first wedge plate 15-3 and the second wedge plate 15-4. The inclined surface of the first wedge plate 15-3 faces downward and abuts against the inclined surface of the second wedge plate 15-4, so that the first wedge plate 15-3 and the second wedge plate 15-4 together form a plane that can provide a supporting force. The two numerically controlled hydraulic cylinders 15-2 are electrically connected to the control system 1. By controlling the two numerically controlled hydraulic cylinders 15-2 simultaneously through the control system 1, the telescopic movement of their piston rods is controlled, thereby driving the relative sliding of the first wedge plate 15-3 and the second wedge plate 15-4, and finally adjusting the overall height of the first wedge plate 15-3 and the second wedge plate 15-4, that is, the overall height of the numerically controlled support locking assembly 15, and further controlling the separation and connection of the upper pier 8 and the support pier 16 on the bridge. A rubber support plate 15-5 is fixed on the upper end surface of the first wedge plate 15-3 located at the upper end, making the contact between the wedge plate as a whole and the upper pier 8 of the bridge more reliable, and thus making the contact between the support pier 16 and the upper pier 8 of the bridge more reliable. When the bridge rotates, the control system 1 controls the two numerically controlled hydraulic cylinders 15-2 to contract their piston rods, generating an appropriate gap between the rubber support plate 15-5 and the upper pier 8 of the bridge to facilitate the rotation of the upper pier 8 of the bridge. When the bridge rotates to a specified position or encounters special circumstances during the rotation process, the control system 1 issues a locking instruction to the hydraulic cylinder, causing its piston rod to extend outward. The two wedge plates slide upward, making the rubber support plate 15-5 closely attached to the bottom surface of the upper pier 8 of the bridge. In addition, a number of spare piers 17 are arranged below the upper pier 8 of the bridge for backup.

[0037] Further, in order to enable the bridge to slide smoothly during rotation, a polytetrafluoroethylene slide plate 18 is arranged at the lower end of the support foot slide plate 2-1, thereby reducing the friction coefficient and the sliding resistance on the turntable slideway 4.

[0038] Further, a vertical displacement sensor 3-1 is arranged on the lower support plate of the rotating support 3 in the middle of the anti-overturning device, a rotational displacement sensor 3-2 is arranged on the upper support plate, and a force sensor 3-3 is arranged between the lower support plate and the upper support plate. The vertical displacement sensor 3-1, the rotational displacement sensor 3-2, and the force sensor 3-3 are all electrically connected to the control system 1. Thus, during the bridge construction process, the force conditions of each part of the rotating bridge are calculated based on the various data collected by the control system 1, and the construction progress is guided to promote the balance of the gravity at both ends of the beam body during the bridge construction process, so that the center of gravity of the bridge does not shift. At the same time, the weighing and counterweight link before the bridge rotation can be omitted.

[0039] Further, the upper pier 8 of the bridge is connected to the numerically controlled swing drive assembly 19, and the numerically controlled swing drive assembly 19 is electrically connected to the control system 1 and is used to drive the rotation of the bridge under the control of the control system 1. Specifically, the numerically controlled swing drive assembly 19 is a numerically controlled traction drive assembly, which provides the driving force for the implementation of the bridge rotation. The numerically controlled traction drive assembly is based on the existing tensioning jack and adds a numerically controlled part and is connected to the overall control system 1. The numerically controlled traction drive assembly is controlled by the control system 1, so as to control the speed and torque during the bridge rotation and coordinate with other numerically controlled modules to complete the automated bridge rotation construction process.

[0040] Further, the control system 1 includes a PLC controller and a terminal; the PLC controller receives the electrical signals of the anti-overturning device and various sensors arranged on the swing bearing 3 and conducts overall control to realize the automatic control of the entire swing process; its control display interface can also be displayed on multiple terminal devices such as the project command center through the Internet of Things to control the bridge rotation process; the terminal can be any mobile device that meets the requirements, such as a tablet computer, a mobile phone, a PC, and a dedicated server. The data processed by the PLC processor will be displayed on the mobile terminal.

[0041] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A numerical control anti-overturning device for bridge rotation, characterized in that It includes a number of numerically controlled hydraulic outrigger assemblies and a control system. The lower ends of the numerically controlled hydraulic outrigger assemblies are arranged on the turntable slideways around the support, and the upper ends are fixed to the lower end of the upper pier of the bridge through connecting plates. The upper pier of the bridge is connected to the bridge of the rotating body to be rotated; the numerically controlled hydraulic outrigger assembly includes an outrigger slide plate, a spherical hinge support, and a numerically controlled hydraulic jack; the base of the numerically controlled hydraulic jack is fixed on the connecting plate, its piston rod is installed on the spherical hinge support, and the spherical hinge support is installed on the outrigger slide plate; a height measurement assembly is arranged outside the numerically controlled hydraulic jack. The height measurement assembly includes a slide rail vertically arranged on the outrigger slide plate. A slider is connected to the slide rail. The slider is connected to the connecting plate through a connecting rod, and a displacement sensor is installed on the slider. The control system is electrically connected to the numerically controlled hydraulic jack and the displacement sensor respectively. When the bridge tilts during the rotation process, the slider at this position will generate a displacement along the slide rail. At this time, the displacement sensor sends the generated displacement signal to the control system, and the control system controls the numerically controlled hydraulic jack at the corresponding position to adjust the height.

2. The numerically controlled bridge rotation anti-overturning device according to claim 1, wherein An electronic digital display height measuring instrument that can rotate with the upper pier of the bridge is installed between the turntable slideway on one side of the outrigger slide plate and the connecting plate. When the bridge rotates, the electronic digital display height measuring instrument can move to measure the distance between the connecting plate and the turntable slideway.

3. The numerically controlled bridge swivel anti-overturning device according to claim 1, wherein It also includes a number of numerically controlled tie rod assemblies. The numerically controlled tie rod assemblies are arranged at the lower end of the upper pier of the bridge outside the turntable slideway, and include a length-adjustable tie rod connected to the upper pier of the bridge. A tensile numerically controlled encoder is arranged on the tie rod, and the tensile numerically controlled encoder is electrically connected to the control system; a portal connecting frame is fixed at the lower end of the tie rod. Relatively fixed limit rollers are arranged on the inner side of the portal connecting frame. The upper end of the I-shaped limit slide rail fixed on the ground base layer extends into the portal connecting frame and is located between the limit rollers. The I-shaped limit slide rail cooperates with the limit rollers and the portal connecting frame, so as to movably connect the tie rod in the I-shaped limit slide rail.

4. The numerically controlled bridge rotation anti-overturning device according to claim 3, characterized in that, It also includes a numerically controlled support locking assembly. A support pier is arranged below the upper pier of the bridge outside the numerically controlled tie rod assembly, and the numerically controlled support locking assembly is installed between the upper pier of the bridge and the support pier.

5. The numerically controlled bridge rotation anti-overturning device according to claim 4, characterized in that, The numerically controlled support locking assembly includes a base and numerically controlled hydraulic cylinders hinged on both sides of the upper end of the base; a first wedge plate and a second wedge plate are arranged on the base. The piston rods of the numerically controlled hydraulic cylinders are respectively connected to the first wedge plate and the second wedge plate, and the inclined surface of the first wedge plate faces downward and abuts against the inclined surface of the second wedge plate, so that the overall upper end surface of the first wedge plate and the second wedge plate is a plane; the two numerically controlled hydraulic cylinders are electrically connected to the control system. By controlling the two numerically controlled hydraulic cylinders simultaneously through the control system, the telescopic movement of their piston rods can be controlled, so as to drive the relative sliding of the first wedge plate and the second wedge plate, and finally adjust the overall height of the numerically controlled support locking assembly, so as to control the separation and connection of the upper pier of the bridge and the support pier.

6. The numerically controlled bridge rotation anti-overturning device according to claim 5, characterized in that, A rubber support plate is fixed on the upper end surface of the first wedge-shaped plate.

7. The numerically controlled bridge rotation anti-overturning device according to claim 1, wherein, A polytetrafluoroethylene sliding plate is arranged at the lower end of the supporting foot sliding plate.

8. The numerically controlled bridge rotation anti-overturning device according to claim 1, characterized in that, The numerically controlled hydraulic supporting feet, mechanical supporting feet, and sand boxes are alternately arranged on the turntable slideway.

9. The numerically controlled bridge rotation anti-overturning device according to claim 1, characterized in that, The upper pier of the bridge is connected to the numerically controlled slewing drive assembly, and the numerically controlled slewing drive assembly is electrically connected to the control system, and is used to drive the slewing of the bridge under the control of the control system.

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