Swivel bridge stability control system and stability reinforcing equipment thereof

Abstract

The invention discloses a swivel bridge stability control system and a stability reinforcing device thereof, and particularly relates to the technical field of bridge construction, the system comprises a swivel system, a main control system, a detection system, a swivel power system and a balance system, the balance system comprises an anti-tilting device, a stability counterweight device and a stability reinforcing device, the stability enhancing equipment comprises a counterweight liquid storage box and a counterweight liquid control assembly, counterweight liquid is stored in the counterweight liquid storage box, the counterweight liquid control assembly comprises a conveying pipeline and a bidirectional control pump system, the bidirectional control pump system is used for inputting or extracting counterweight storage liquid into or from the counterweight liquid storage box, and a control valve is arranged on the conveying pipeline. According to the invention, the amount of the liquid in the counterweight liquid storage box is controlled and adjusted on the ground, so that the weight is finely adjusted, a counterweight system of a beam body is adjusted in time until the beam body is kept stable, the increase of construction time is avoided, and the safety of swivel construction is also greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction. More specifically, the present invention relates to a stability control system for a rotating bridge and its stability enhancement equipment. Background Art

[0002] The construction method of rotation means that after the cast-in-place beam construction is completed on one side of the railway operation line for a T-shaped rigid frame bridge, within the railway blockade time, it is horizontally rotated through a rotation system to reach the designed position. After the rotation is completed, the concrete of the upper and lower turntables is sealed and fixed, and finally the beam body is closed.

[0003] The basic principle of rotation is that the weight of the main beam is transmitted to the upper spherical hinge through the pier column, and the upper spherical hinge is transmitted to the lower spherical hinge and the bearing platform through the polytetrafluoroethylene sliders between the spherical hinges. After the construction of the main beam is completed, the support (hanging basket) is removed and the sand box is deaerated to transfer all the weight of the beam body to the spherical hinge, and then weighing and counterweight are carried out. By using the traction cable buried in the upper turntable and the continuous acting jack for rotation, the dynamic friction torque between the upper and lower spherical hinges and between the supporting feet and the lower slideway is overcome, so that the beam body rotates in place.

[0004] For a rotating bridge, the unbalanced moment caused by the construction error of the beam body and the unbalanced moment caused by the unbalanced rotation traction force usually cause changes in the attitude and balance state of the beam body. If the attitude of the beam body is not controlled and adjusted in time, it may affect the smooth progress of the rotation construction and the safety of the beam body.

[0005] The existing stability control scheme for rotating bridges is mainly to use a crane to hoist and install counterweight blocks at the predetermined positions at the beam ends before rotation, change the center of gravity of the beam body, and thus change the attitude of the beam body to achieve the purpose of attitude adjustment; and in order to reduce the overall counterweight, the counterweight is preferentially set at the end positions of the beam body to increase the counterweight moment arm, thereby reducing the total counterweight, reducing the pressure of the beam body on the rotating structure, and avoiding damage to the rotating structure.

[0006] During the rotation of the bridge, due to factors such as the environment and measurement errors, an unbalanced phenomenon will occur during the rotation process. Once a relatively serious inclination occurs during the rotation of the beam body, threatening the safety of the bridge rotation, the rotation must be stopped and the counterweight of the beam body must be re-adjusted to adjust the attitude of the beam body. At this time, since the bridge has changed its initial position, adjusting the counterweight again through the lifting equipment will waste a lot of time. On the one hand, it will increase the total construction duration and bring unnecessary trouble. On the other hand, the beam body is in an unbalanced state for a long time, which is more dangerous and affects the safety of the rotation construction. Summary of the Invention

[0007] A stability control system for a rotating bridge and its stability enhancement equipment provided by the present invention aim to solve the following problems: When serious imbalance occurs in the existing rotating construction, it is impossible to adjust the attitude of the beam body, wasting a lot of time, bringing unnecessary troubles, and affecting the safety of the rotating construction.

[0008] To achieve the above object, the present invention provides the following technical solution: A stability control system for a rotating bridge includes a rotating system, a main control system, a detection system, a rotating power system, and a balance system. The balance system includes an anti-tilting device, a stability counterweight device, and a stability enhancement device. The rotating system includes a beam body, a beam pier, and a foundation platform. The beam body is located on the beam pier, and a rotating structure is provided between the beam pier and the foundation platform. The rotating structure includes a lower turntable and an upper turntable. The rotating power system is used to drive the beam body and the beam pier to rotate. The stability enhancement device includes a counterweight liquid storage tank and a counterweight liquid control component. The counterweight liquid storage tank stores counterweight liquid. The counterweight liquid control component includes a delivery pipeline and a two-way control pump system. The two-way control pump system is used to input or extract the counterweight storage liquid into the counterweight liquid storage tank, and a control valve is provided on the delivery pipeline.

[0009] In a preferred embodiment, the anti-tilting device is composed of a support leg and a sand box provided between the lower turntable and the upper turntable, and the stability counterweight device is a sandbag structure.

[0010] A stability enhancement device for a rotating bridge. A floating baffle is provided inside the counterweight liquid storage tank. The floating baffle is located on the liquid surface of the counterweight liquid. A guiding frame that is slidably engaged with the inner wall of the counterweight liquid storage tank is fixedly connected to the edge of the floating baffle. The floating baffle has buoyancy on the counterweight liquid. The middle part of the floating baffle is convexly provided, and an upward extension pipe is fixedly installed in the middle of the floating baffle. The bottom end of the upward extension pipe is communicated with the space below the floating baffle. Filling particles are provided inside the upward extension pipe. A liquid blocking piece is provided at the position corresponding to the upward extension pipe at the bottom of the floating baffle. A slit is formed between the liquid blocking piece and the floating baffle, and the slit is communicated with the upward extension pipe.

[0011] In a preferred embodiment, a sponge block is fixedly installed at the bottom of the edge of the floating baffle. The sponge block is arranged around the edge of the floating baffle, and multiple groups of hard insert structures are provided inside the sponge block.

[0012] In a preferred embodiment, a buoyancy piston is slidably installed inside the upward extension pipe. The buoyancy piston is fixedly connected to the liquid blocking piece through a connecting rod. A mesh frame is fixedly installed at the bottom of the buoyancy piston, and the filling particles are filled in the mesh frame.

[0013] In a preferred embodiment, a sealing assembly is provided between the guiding frame and the inner wall of the counterweight liquid storage tank. An air extraction pipe is provided at the top of the counterweight liquid storage tank. The air extraction pipe communicates with the space above the floating baffle. The air extraction pipe is connected to a vacuum extraction device through a pipeline, and an air inlet control valve is provided on this pipeline.

[0014] In a preferred embodiment, the sealing assembly includes a sealing ring. The sealing ring is snap-fitted in the guiding frame and is in sliding fit with the inner wall of the counterweight liquid storage tank. Multiple piston grooves are provided on the guiding frame. A pneumatic piston is slidably installed in the piston groove. The top of the piston groove communicates with the upper space between the floating baffle and the counterweight liquid storage tank. An activity space is provided in the guiding frame. A wedge block is slidably installed in this activity space. The wedge block is fixedly connected to the pneumatic piston through a piston rod. The activity space is pre-filled with air. An inner convex part is provided on one side of the sealing ring corresponding to the wedge block. The inner convex part cooperates with the inclined surface part of the wedge block.

[0015] In a preferred embodiment, a base is provided at the bottom of the counterweight liquid storage tank. The base is installed on the beam body. A weighing sensor is provided between the counterweight liquid storage tank and the base. A pneumatic sensor is provided above the floating baffle.

[0016] In a preferred embodiment, a dispersion liquid outlet plate is provided in the counterweight liquid storage tank. The dispersion liquid outlet plate is located below the floating baffle. The dispersion liquid outlet plate is set as a hollow plate structure. The dispersion liquid outlet plate is communicated with a conveying pipeline through a hose. Multiple uniformly distributed liquid outlet holes are provided on the surface of the dispersion liquid outlet plate.

[0017] In a preferred embodiment, the top of the dispersion liquid outlet plate is hinged to the floating baffle. A slider is rotatably installed at the bottom of the dispersion liquid outlet plate. A guiding structure is fixedly installed at the bottom of the inner cavity of the counterweight liquid storage tank. The slider is in sliding fit with the guiding structure, and the liquid outlet holes on both sides of the surface of the dispersion liquid outlet plate are arranged in a staggered manner.

[0018] The beneficial effects of the present invention are as follows: During the bridge rotation construction process of the present invention, by real-time monitoring the stress and attitude of the beam body, when an accident occurs, the liquid volume in the counterweight liquid storage tank can be adjusted according to the detection results, and then the counterweight can be finely adjusted, so as to timely adjust the counterweight system of the beam body until the beam body remains stable. By using the above scheme, the stability of the beam body can be strengthened and controlled in a timely manner, avoiding an increase in the construction duration, and also greatly improving the safety of the rotation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the composition of the bridge stability control system of the present invention.

[0020] Figure 2 It is a schematic diagram of the construction scene of the present invention.

[0021] Figure 3 This is a schematic diagram of the usage state of the device for enhancing the stability of the present invention.

[0022] Figure 4 This is a schematic diagram of the composition of the swivel structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the cooperation mode between another stability counterweight device and the counterweight liquid storage tank of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the counterweight liquid storage tank of the present invention.

[0025] Figure 7 This is based on the present invention Figure 6 The enlarged structure diagram of the upward extension pipe in.

[0026] Figure 8 This is the present invention Figure 6 The enlarged structure diagram of part A.

[0027] Figure 9 This is a schematic diagram of the internal structure of the improved counterweight liquid storage tank of the present invention.

[0028] Figure 10 This is based on the present invention Figure 9 The enlarged structure diagram of the upward extension pipe in.

[0029] Figure 11 This is a schematic diagram of the structure of the sealing component of the present invention.

[0030] Figure 12 This is a schematic diagram of the distribution of the added liquid dispersion plate in the counterweight liquid storage tank of the present invention.

[0031] Figure 13 This is the present invention Figure 12 The enlarged structure diagram of part B.

[0032] The accompanying drawings are marked as follows: 1. swivel system; 11. beam body; 12. beam pier; 13. base; 14. swivel structure; 141. lower turntable; 142. upper turntable; 2. main control system; 3. detection system; 31. weighing sensor; 32. air pressure sensor; 4. swivel power system; 5. stability enhancement equipment; 51. counterweight liquid storage box; 511. base; 512. guide structure; 52. counterweight liquid control assembly; 521. delivery pipeline; 522. two-way control pump system; 53. floating baffle; 531. guide frame ; 532, sponge block; 533, liquid blocking plate; 534, slit; 535, piston groove; 54, upper extension tube; 541, buoyancy piston; 542, connecting rod; 55, filling particles; 551, mesh frame; 56, sealing assembly; 561, sealing ring; 562, wedge block; 563, pneumatic piston; 564, piston rod; 565, inner convex part; 57, vacuum pipe; 58, liquid dispersion plate; 581, slider; 582, liquid outlet; 6, stability counterweight device; 7, anti-tilt device; 71, support leg; 72, sandbox. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Refer to the instruction manual Figures 1 to 5 A swivel bridge stability control system includes a swivel system 1, a main control system 2, a detection system 3, a swivel power system 4 and a balancing system, wherein the balancing system includes an anti-tilt device 7, a stability counterweight device 6 and a stability reinforcement device 5, wherein: The swivel system 1 includes a beam body 11, a beam pier 12 and a base 13. The beam body 11 is located on the beam pier 12. A swivel structure 14 is arranged between the beam pier 12 and the base 13. The swivel structure 14 includes a lower turntable 141 and an upper turntable 142. The lower turntable 141 and the upper turntable 142 are connected by upper and lower ball joints, and the upper turntable 142 is the basis for supporting the entire weight of the swivel structure. The main components of the lower turntable 141 include a lower ball joint and its frame, a lower slide track and its frame, a center positioning shaft, and a jack reaction seat. The main components of the upper turntable 142 include an upper ball joint and its frame, and a support foot. A swivel traction rope is embedded in the turntable. The exposed part of the traction rope is smoothly wrapped around the turntable and placed on the embedded steel bars without interfering with each other.

[0035] The slewing power system 4 mainly includes a traction reaction seat and a traction cable. Two continuous jacks are horizontally and symmetrically arranged in the same plane on both sides of the turntable. The center line of the continuous jack must be tangent to the outer circle of the upper bearing platform, and the center line height is horizontal with the center line of the prestressed steel strands embedded in the upper bearing platform. At the same time, it is required that the distances from the two continuous jacks to the beam pier 12 are equal. The continuous jacks are fixed to the reaction frame with high-strength bolts, and the reaction frame is fixed to the reaction pier by welding. During construction, the rotation power of the beam pier 12 is formed by the traction of the traction cable by the continuous jacks.

[0036] The main control system 2 consists of a main control unit, a display unit, an actuator, a hydraulic pump station, etc. The main control unit adopts PLC control, and all operations of the system are controlled by the PLC. It controls the extension and retraction of the jack cylinders according to the detected signals in accordance with the construction method of continuous slewing. At the same time, it also needs to control the duration of each action to ensure a smooth force conversion between the front and rear jacks. The logic control signals sent by the main control unit drive the corresponding solenoid valves to act, realizing the coordinated action of multiple jacks, that is, the cluster control of jacks. At the same time, the main control system 2 cooperates with the detection data of the detection system 3 during the construction process to judge the construction situation and control the slewing power system 4, the stability strengthening equipment 5 and other related equipment of the turntable system to further ensure the stability of the construction process.

[0037] The detection system 3 mainly includes various pressure sensors installed at the corresponding jacks and other corresponding positions for detecting the force conditions at each position, as well as displacement sensors, total stations, etc. for observing the attitude of the beam body 11. During the weighing test and the slewing process, the slewing situation of the beam body 11 is monitored in real time, and the corresponding information is fed back to the main control system 2.

[0038] The anti-tilting equipment 7 consists of supporting feet 71 and sand boxes 72 arranged between the lower turntable 141 and the upper turntable 142. The anti-tilting equipment 7 also includes other various protection systems arranged at the corresponding positions. The stability counterweight equipment 6 is mainly composed of counterweight structures such as sandbags. The stability strengthening equipment 5 includes a counterweight liquid storage tank 51 and a counterweight liquid control component 52. Before construction, the stability counterweight equipment 6 and the counterweight liquid storage tank 51 are combined and arranged at the end position of the beam body 11. The counterweight liquid storage tank 51 stores counterweight liquid, and the counterweight liquid control component 52 is used to control the amount of counterweight liquid in the counterweight liquid storage tank 51. The counterweight liquid control component 52 includes a conveying pipeline 521 and a two-way control pump system 522 (that is, a combination of an injection pump and a withdrawal pump). Among them, the two-way control pump system 522 is mainly arranged on the ground and is connected to the counterweight liquid source (where the counterweight liquid source mainly uses water). For the convenience of construction, the two-way control pump system 522 can be combined with a vehicle (refer to a fire truck). The conveying pipeline 521 is laid along the beam body 11 and the beam pier 12 and extends to the ground to be connected to the two-way control pump system 522. A control valve is arranged on the conveying pipeline 521.

[0039] Before actual construction, it is necessary to conduct a weighing test on the beam body 11. Based on the test conclusions, calculate the initial counterweight, that is, the specific weights of the stability counterweight device 6 and the counterweight liquid storage tank 51, and close the control valve on the conveying pipeline 521. Then, carry out the rotation construction. During the construction process, monitor the stress and attitude of the beam body 11 in real time. When an accident occurs suddenly, the liquid volume in the counterweight liquid storage tank 51 can be adjusted according to the detection results, thereby finely adjusting the counterweight, so as to timely adjust the counterweight system of the beam body 11 until the beam body 11 remains stable. By using the above solution, the stability of the beam body 11 can be strengthened and controlled in a timely manner, avoiding an increase in the construction duration and greatly improving the safety of the rotation construction.

[0040] It should be noted that, for the specific solutions involved in the above rotation construction, except for the stability strengthening device 5, they are all common solutions in the rotation construction. Regarding the weighing operation, it is also a necessary step during the rotation construction, and the specific solution of the weighing test is also a known technology in the rotation construction. Therefore, this embodiment will not be elaborated too much.

[0041] It should be noted that, in the above embodiment, in order to improve the counterweight adjustment efficiency, the stability strengthening device 5 is used as an adjustable counterweight. During the rotation process, if an accident occurs and re-counterweight is required, the counterweight liquid volume in the counterweight liquid storage tank 51 can be adjusted by the two-way control pump system 522 to adjust the counterweight, so as to strengthen the control of the stability during the bridge rotation process.

[0042] However, for the construction scenario where the beam body 11 is relatively long and the counterweight adjustment range is large, since the counterweight liquid storage tank 51 is located at the end of the beam body 11, during the rotation construction, the linear velocity of the counterweight liquid storage tank 51 is relatively large. Since an adjustment space needs to be reserved in the counterweight liquid storage tank 51, the counterweight liquid in the counterweight liquid storage tank 51 cannot completely fill the counterweight liquid storage tank 51, and a free space is formed above the liquid level. During the rotation process, the liquid will flow irregularly, forming inertial impact, which will affect the smoothness of the bridge rotation. Especially when the impact vibration of the water in the water tank resonates with the rotation vibration of the bridge itself, the impact will be aggravated, and in severe cases, even a rotation accident may occur. For this reason, this embodiment also provides a specific solution for the stability strengthening device of the rotating bridge. Refer to the attached Figures 1 to 13 In the counterweight liquid storage tank 51, a floating baffle 53 is provided. The floating baffle 53 is located on the liquid surface of the counterweight liquid. A guiding frame 531 that is slidably matched with the inner wall of the counterweight liquid storage tank 51 is fixedly connected to the edge of the floating baffle 53. The floating baffle 53 has buoyancy on the counterweight liquid.

[0043] In the above embodiment, due to the presence of the floating baffle 53, and the guiding frame 531 being in contact with the inner wall of the counterweight liquid storage tank 51, a stable restriction on the counterweight liquid in the counterweight liquid storage tank 51 is formed, almost eliminating the liquid level movement space of the counterweight liquid. During the rotation construction, the counterweight liquid in the counterweight liquid storage tank 51 can be relatively stable to the greatest extent, without liquid fluctuations and irregular flow impacts of the liquid, thereby ensuring the relative stability of the counterweight liquid storage tank 51.

[0044] Among them, a base 511 is provided at the bottom of the counterweight liquid storage tank 51, the base 511 is installed on the beam body 11, and a weighing sensor 31 is provided between the counterweight liquid storage tank 51 and the base 511. The weighing sensor 31 is used to detect the weight of the counterweight liquid storage tank 51 in real time, further enhancing the monitoring and control of the counterweight effect of the stability enhancing device 5.

[0045] Furthermore, since the above counterweight liquid storage tank 51 can be reused, after the last use, the water in the counterweight liquid storage tank 51 needs to be drained for convenient transportation. Therefore, when the counterweight liquid storage tank 51 is in use, there will be air below the floating baffle 53. When the counterweight liquid is injected, part of the air is difficult to discharge upward and remains below the floating baffle 53. At this time, there will be a partial liquid movement space, which will cause a small amount of irregular impacts of the counterweight liquid during rotation. To further eliminate the influence of the residual air, the present embodiment also provides the following technical solution. Specifically, referring to the attached Figure 6 and Figure 7 , the middle part of the floating baffle 53 protrudes upward, and an extension pipe 54 is fixedly installed in the middle of the floating baffle 53. The bottom end of the extension pipe 54 is communicated with the space below the floating baffle 53, and filling particles 55 are arranged inside the extension pipe 54.

[0046] It should be noted that when initially injecting the counterweight liquid, the air below the floating baffle 53 can be discharged from the upper extension pipe 54. Until the liquid level of the counterweight liquid rises to the inside of the upper extension pipe 54, it can ensure that the air below the floating baffle 53 is completely discharged, making the counterweight liquid below the floating baffle 53 relatively stable. And the floating baffle 53 has buoyancy. Therefore, as the counterweight liquid in the counterweight liquid storage tank 51 gradually increases, the floating baffle 53 will also gradually rise. The counterweight liquid overflowing in the upper extension pipe 54 will retain a certain height but will not overflow the upper extension pipe 54. At the same time, a liquid blocking piece 533 is provided at the position of the bottom of the floating baffle 53 corresponding to the upper extension pipe 54. A slit 534 is formed between the liquid blocking piece 533 and the floating baffle 53. The slit 534 communicates with the upper extension pipe 54, thereby ensuring that there is no activity space for the counterweight liquid below the floating baffle 53. And the final liquid level of the counterweight liquid is in the upper extension pipe 54. At the same time, filling particles 55 are stored in the upper extension pipe 54. Therefore, in the presence of the filling particles 55, the flow of the counterweight liquid in the upper extension pipe 54 can also be inhibited, reducing the flow impact. At the same time, since the upper extension pipe 54 is much smaller than the counterweight liquid storage tank 51, the high-impact influence of the inevitable liquid flow formed in the upper extension pipe 54 is negligible and will not affect the rotation construction.

[0047] Among them, the filling particles 55 can adopt porous carrier particles, such as activated carbon. The micropores on its surface can adsorb some gas molecules, further improving the stability of the counterweight liquid in the upper extension pipe 54. Among them, when it is necessary to adjust the weight of the counterweight liquid storage tank 51, counterweight liquid is input or output into the counterweight liquid storage tank 51. Therefore, the floating baffle 53 needs to move up and down to a certain extent. To improve the relative stability of the counterweight liquid at the edge of the floating baffle 53, referring to the attached Figure 8 to the specification, a sponge block 532 is fixedly installed at the bottom of the edge of the floating baffle 53. The sponge block 532 is arranged around the edge of the floating baffle 53. At the same time, a plurality of hard insert structures are arranged inside the sponge block 532. Then, by means of the adsorption effect of the sponge on the liquid and the structural reinforcement of the inserts on the sponge, the stability of the counterweight liquid at the edge during the movement of the floating baffle 53 can be further ensured. Secondly, even when a small amount of air enters the counterweight liquid from the gap of the guiding frame 531 during the movement of the floating baffle 53, the air can also adhere to the sponge block 532, avoiding the liquid surface impact movement caused by the existence of air.

[0048] Furthermore, in order to further avoid the influence caused by the connection between the upper extension pipe 54 and the space below the floating baffle 53, the solution of the counterweight liquid storage tank 51 in this embodiment is further improved. Specifically, referring to the attached Figure 9 and Figure 10, a buoyancy piston 541 is slidably installed inside the upward extension pipe 54. The buoyancy piston 541 is fixedly connected to the liquid blocking piece 533 through a connecting rod 542. A mesh frame 551 is fixedly installed at the bottom of the buoyancy piston 541, and the filling particles 55 are filled in the mesh frame 551. Among them, the relative density of the buoyancy piston 541 is greater than the relative density of the floating baffle 53. Therefore, when the counterweight liquid is initially injected, the counterweight liquid will gradually rise and first enter the upward extension pipe 54, discharging the air below the floating baffle 53. Then, the buoyancy piston 541 floats upward first, and the liquid blocking piece 533 blocks the lower channel of the upward extension pipe 54, making the internal space of the upward extension pipe 54 independent from the lower space of the floating baffle 53. Then, as the counterweight liquid gradually increases, the floating baffle 53 gradually rises, thereby avoiding the counterweight liquid entering and overflowing from the upward extension pipe 54 when the movement impact is too large due to excessive mutation factors in the rotation of the beam body 11.

[0049] In the above embodiment, during the construction of some bridge rotations, it is necessary to perform multiple jogging rotations (that is, rotate a certain angle and then pause for a period of time before rotating again). Therefore, during the actual construction process, the number of pauses is relatively large, and the resulting inertial impacts are also relatively numerous. Therefore, in order to further improve the relative stability of the floating baffle 53 in the counterweight liquid storage tank 51 and improve the efficiency of discharging the air below the floating baffle 53, the present embodiment also provides the following technical solution. Specifically, a sealing assembly 56 is provided between the guiding frame 531 and the inner wall of the counterweight liquid storage tank 51. An air extraction pipe 57 is provided at the top of the counterweight liquid storage tank 51. The air extraction pipe 57 is communicated with the upper space of the floating baffle 53. The air extraction pipe 57 is connected to a vacuum extraction device through a pipeline (preferably installed on the ground, or can also be directly installed on the beam body 11), and an intake control valve is provided on this pipeline. During the process of injecting the counterweight liquid into the counterweight liquid storage tank 51, the vacuum extraction device is synchronously turned on, thereby improving the air discharge effect below the floating baffle 53. And when the injection is completed, the upper space of the floating baffle 53 is further subjected to vacuum extraction treatment, and at the same time, the control valve on the conveying pipeline 521 is closed, so that negative pressures are formed above and below the floating baffle 53 (the space below the floating baffle 53 is filled with the counterweight liquid and hardly produces compression or expansion. Therefore, under the action of the negative pressure above the floating baffle 53, the counterweight liquid below the floating baffle 53 will also form a reverse negative pressure on the floating baffle 53), so that the floating baffle 53 can be relatively stably fixed. At the same time, under the action of the negative pressure above the floating baffle 53, the counterweight liquid storage tank 51 can generate a slight inward contraction deformation, improving the friction force on the floating baffle 53 and further improving the stability of the floating baffle 53 after positioning.

[0050] Refer to the attached drawings of the specification Figure 11, the sealing assembly 56 includes a sealing ring 561, which is snap-fitted and installed in the guiding frame 531. The sealing ring 561 is in sliding fit with the inner wall of the counterweight liquid storage tank 51. Multiple sets of piston grooves 535 (circumferentially and evenly distributed along the outer circumference of the floating baffle 53) are provided on the guiding frame 531. An air pressure piston 563 is slidably installed in the piston groove 535. The top of the piston groove 535 communicates with the upper space between the floating baffle 53 and the counterweight liquid storage tank 51. An activity space is provided in the guiding frame 531, and a wedge block 562 is slidably installed in this activity space. The wedge block 562 is fixedly connected to the air pressure piston 563 through a piston rod 564. The activity space is pre-filled with air. An inner convex portion 565 is provided on one side of the sealing ring 561 corresponding to the wedge block 562. The inner convex portion 565 cooperates with the inclined surface of the wedge block 562. When the position of the floating baffle 53 is stable, when the counterweight liquid storage tank 51 is further evacuated through the air extraction pipe 57, the air pressure above the air pressure piston 563 decreases, and it slides upward, thereby driving each wedge block 562 to slide upward. Under the action of its inclined surface, it further extrudes the sealing ring 561 outward, thereby further increasing the relative resistance between the guiding frame 531 and the counterweight liquid storage tank 51, and further improving the sealing effect between the floating baffle 53 and the counterweight liquid storage tank 51, ensuring that during multiple jogging or other pausing processes, the counterweight liquid below the floating baffle 53 can be stably confined in the counterweight liquid storage tank 51 without excessive flow impact.

[0051] In the above embodiment, if an emergency occurs and it is necessary to adjust the amount of counterweight liquid in part of the counterweight liquid storage tank 51, it can be adjusted through the two-way control pump system 522. During the adjustment, the vacuum extraction device is closed, and the intake control valve on the air extraction pipe 57 is opened. However, it should be noted that if the single adjustment amount is large, the amount of counterweight liquid entering or exiting the counterweight liquid storage tank 51 in a short time is relatively large. Especially when injection is required, the counterweight liquid entering the counterweight liquid storage tank 51 is relatively concentrated, and the inflow impact is relatively large, which will also cause certain instability factors. Therefore, the present embodiment also provides the following technical solution. Refer to the attached Figure 12 and 13 , a liquid dispersion plate 58 is provided in the counterweight liquid storage tank 51. The liquid dispersion plate 58 is located below the floating baffle 53. The liquid dispersion plate 58 is provided with a hollow plate structure. The liquid dispersion plate 58 is connected to the conveying pipeline 521 through a hose. Multiple sets of evenly distributed liquid outlet holes 582 are provided on the surface of the liquid dispersion plate 58. Thus, when actually injecting the counterweight liquid, the distribution of the counterweight liquid in the counterweight liquid storage tank 51 is relatively uniform, and no concentrated flow phenomenon will occur, avoiding the generation of a large liquid impact phenomenon.

[0052] Further, the top of the liquid dispersion plate 58 is hinged to the floating baffle 53. A slider 581 is rotatably installed at the bottom of the liquid dispersion plate 58. A guiding structure 512 is fixedly installed at the bottom of the inner cavity of the counterweight liquid storage tank 51. The slider 581 is slidably engaged with the guiding structure 512, and the liquid outlet holes 582 on both surfaces of the liquid dispersion plate 58 are arranged in a staggered manner. Thus, the liquid dispersion plate 58 can form a partition assembly in the counterweight liquid storage tank 51, which can further block the internal flow of the counterweight liquid.

[0053] It should be noted that the above counterweight liquid mainly uses water. However, during winter construction, when the temperature is relatively low, antifreeze liquid can also be used, or heat preservation operations can be carried out on the counterweight liquid storage tank 51 and the conveying pipeline 521, and corresponding heat preservation layers can be set. In order to further accurately control the negative pressure above the floating baffle 53, a pressure sensor 32 can also be arranged above the floating baffle 53 to monitor the air pressure in real time, so as to more quickly and accurately monitor and adjust the internal conditions of the counterweight liquid storage tank 51.

[0054] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A stability control system for a rotating bridge, comprising a rotating system (1), a main control system (2), a detection system (3), a rotating power system (4) and a balancing system, wherein the balancing system comprises an anti-tilt device (7), a stability counterweight device (6) and a stability reinforcement device (5); The swivel system (1) comprises a beam body (11), a beam pier (12) and a base (13); the beam body (11) is located on the beam pier (12); a swivel structure (14) is provided between the beam pier (12) and the base (13); the swivel structure (14) comprises a lower turntable (141) and an upper turntable (142); and the swivel power system (4) is used to drive the beam body (11) and the beam pier (12) to rotate; Features: The stability enhancing device (5) comprises a balancing liquid storage tank (51) and a balancing liquid control assembly (52); the balancing liquid storage tank (51) stores balancing liquid; the balancing liquid control assembly (52) comprises a delivery pipeline (521) and a two-way control pump system (522); the two-way control pump system (522) is used to input or extract balancing liquid storage into the balancing liquid storage tank (51); and a control valve is provided on the delivery pipeline (521).

2. A swivel bridge stability control system according to claim 1, characterized in that: The anti-tilt device (7) is composed of a support leg (71) and a sandbox (72) arranged between the lower rotating disk (141) and the upper rotating disk (142), and the stability counterweight device (6) is a sandbag structure.

3. A stability enhancing device for a swivel bridge stability control system as claimed in claim 2, characterized in that: A floating baffle (53) is arranged in the counterweight liquid storage box (51). The floating baffle (53) is located on the liquid surface of the counterweight liquid. A guide frame (531) that is slidably matched with the inner wall of the counterweight liquid storage box (51) is fixedly connected to the edge of the floating baffle (53). The floating baffle (53) has buoyancy on the counterweight liquid. The middle part of the floating baffle (53) is convexly arranged, and an upper extension tube (54) is fixedly installed in the middle part of the floating baffle (53). The bottom end of the upper extension tube (54) is connected to the space below the floating baffle (53). Filling particles (55) are arranged inside the upper extension tube (54). A liquid blocking sheet (533) is arranged at the bottom of the floating baffle (53) corresponding to the position of the upper extension tube (54). A slit (534) is formed between the liquid blocking sheet (533) and the floating baffle (53). The slit (534) is connected to the upper extension tube (54).

4. The device for enhancing the stability of a rotating bridge according to claim 3, characterized in that: A sponge block (532) is fixedly mounted on the bottom of the edge of the floating baffle (53). The sponge block (532) is arranged around the edge of the floating baffle (53). A plurality of groups of hard insert structures are arranged inside the sponge block (532).

5. The device for enhancing the stability of a rotating bridge according to claim 4, characterized in that: A buoyancy piston (541) is slidably mounted inside the upper extension tube (54); the buoyancy piston (541) is fixedly connected to the liquid blocking sheet (533) via a connecting rod (542); a mesh frame (551) is fixedly mounted on the bottom of the buoyancy piston (541); and the filling particles (55) are filled in the mesh frame (551).

6. The device for enhancing the stability of a rotating bridge according to claim 5, characterized in that: A sealing assembly (56) is provided between the guide frame (531) and the inner wall of the counterweight liquid storage box (51); an air extraction pipe (57) is provided on the top of the counterweight liquid storage box (51); the air extraction pipe (57) is in communication with the space above the floating baffle (53); the air extraction pipe (57) is connected to a vacuum extraction device via a pipeline, and an air intake control valve is provided on the pipeline.

7. The device for enhancing the stability of a rotating bridge according to claim 6, characterized in that: The sealing assembly (56) comprises a sealing ring (561), the sealing ring (561) being mounted in a guide frame (531), the sealing ring (561) being slidably matched with the inner wall of the weight liquid storage box (51), the guide frame (531) being provided with a plurality of groups of piston grooves (535), the piston grooves (535) being slidably mounted with pneumatic pistons (563), the tops of the piston grooves (535) being connected between the floating baffle plate (53) and the weight liquid storage box (51). The guide frame (531) is provided with an activity space, a wedge block (562) is slidably mounted in the activity space, the wedge block (562) is fixedly connected to the pneumatic piston (563) via a piston rod (564), the activity space is pre-filled with air, and an inner convex portion (565) is provided on one side of the sealing ring (561) corresponding to the wedge block (562), the inner convex portion (565) cooperates with the inclined portion of the wedge block (562).

8. The device for enhancing the stability of a rotating bridge according to claim 7, characterized in that: A base (511) is provided at the bottom of the ballast liquid storage box (51), and the base (511) is mounted on the beam body (11). A weighing sensor (31) is provided between the ballast liquid storage box (51) and the base (511), and an air pressure sensor (32) is provided above the floating baffle (53).

9. The device for enhancing the stability of a rotating bridge according to claim 8, characterized in that: A dispersion liquid outlet plate (58) is arranged in the weight liquid storage box (51). The dispersion liquid outlet plate (58) is located below the floating baffle (53). The dispersion liquid outlet plate (58) is arranged as a hollow plate structure. The dispersion liquid outlet plate (58) is connected to the delivery pipeline (521) via a hose. The surface of the dispersion liquid outlet plate (58) is provided with a plurality of groups of evenly distributed liquid outlet holes (582).

10. The device for enhancing the stability of a rotating bridge according to claim 9, characterized in that: The top of the dispersed liquid outlet plate (58) is hinged to the floating baffle (53), the bottom of the dispersed liquid outlet plate (58) is rotatably mounted with a slider (581), the bottom of the inner cavity of the counterweight liquid storage box (51) is fixedly mounted with a guide structure (512), the slider (581) and the guide structure (512) are slidably matched, and the liquid outlet holes (582) on the two side surfaces of the dispersed liquid outlet plate (58) are staggered with each other.

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