Intelligent anti-scouring device and method for underwater bridge pier

Abstract

The invention relates to the technical field of underwater scour protection, and provides an underwater bridge pier intelligent anti-scour device which comprises a sleeve used for being arranged on an underwater bridge pier part in a sleeving mode and fixed to a certain depth underwater through a fixing sleeve at the top end; the bias flow ring is rotationally connected to the bottom end of the outer wall of the sleeve, a plurality of turbulent flow blades are fixedly connected to the periphery of the bias flow ring, and the bias flow ring is used for breaking streaming vortexes on the two sides of the bridge pier underwater; the number of the gears is multiple, and the multiple gears are connected to the side, close to the bias flow ring, of the sleeve through meshing assemblies. The bridge pier protection device can damage streaming vortexes on the two sides of a bridge pier under the impact of water flow, change the movement direction and structure of the water flow, effectively reduce the scouring force of the water flow to the bridge pier, prevent sundries mixed in the water flow from being stuck in a core rotating area of the device, improve the adaptability and stability of the protection device in a complex underwater environment, and reduce the construction cost. And the pier can be effectively protected for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater scour protection, and particularly to an intelligent underwater pier scour prevention device and method. Background Art

[0002] Local scour of piers is an important cause of bridge damage. The direct economic losses caused by bridge damage due to floods during the flood season every year are huge. Moreover, with the frequent occurrence of extreme rainfall and intensified floods globally in recent years, the local scour damage of bridges has been on the rise year by year. Scour damage to bridge foundations often occurs suddenly without warning and is difficult to monitor during floods. Due to the uncertainty of pier scour, it increases the difficulty of solving the scour problem and the cost of damaged maintenance is relatively high.

[0003] In order to reduce the scour of water flow on piers, protection needs to be carried out around the piers. Generally, most of the existing scour prevention methods achieve the scour prevention effect by throwing a large number of stones around the piers. However, due to the large volume of piers, the engineering quantity of throwing stones around them is large, the construction is time-consuming and laborious, the quantity of materials and equipment required is large, and precise calculation and throwing are required when throwing stones around the piers to form an effective protective layer. Since the protection is formed by piling up stones, under the long-term scour of water flow, the stones may shift or roll, and its integrity is relatively poor, which easily leads to the damage or failure of the protective layer.

[0004] Existing devices are easily affected by sundries carried in the water flow, such as branches, plastic bags, stones, etc. These sundries may wind around the components of the protection device, causing the mechanical structure of the device to jam or block, thereby affecting the normal operation and protection effect of the device. Therefore, an intelligent underwater pier scour prevention device and method are needed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an intelligent underwater pier scour prevention device and method, which improves the adaptability and stability of the protection device in a complex underwater environment and ensures its long-term and effective protection of piers.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] An intelligent underwater pier scour prevention device, comprising:

[0008] A sleeve, which is used to sleeve on a part of the underwater pier and is fixed at a certain depth underwater through a fixing sleeve at the top;

[0009] A flow deviation ring, which is rotatably connected to the bottom end of the outer wall of the sleeve. A plurality of spoiler blades are fixedly connected to the outer circumference of the flow deviation ring, and are used to destroy the flow-around vortices on both sides of the pier underwater;

[0010] Gears, the number of the gears is multiple, and the multiple gears are connected to the adjacent sides of the sleeve and the drift ring through a meshing assembly, so that when the drift ring rotates, it drives the gears to rotate and displace. The gears are connected with cleaning brushes through a triggering assembly to clean the meshing transmission area of the gears;

[0011] Inner ring frame, the inner circumference of the inner ring frame is rotatably connected to the middle end of the outer wall of the sleeve. The outer circumference of the inner ring frame is fixedly connected with an outer ring frame. The bottom side of the outer ring frame is rotatably connected to the drift ring. The outer circumference of the top side of the gear is rotatably connected to the inner circumference of the bottom side of the outer ring frame. A pushing and pulling assembly is installed on the top side of the outer ring frame to drive the water storage assembly above the outer wall of the sleeve to pump and drain water, so that the water outlet pipe installed at the bottom side of the water storage assembly sprays water through the nozzle at the output end. The pushing and pulling assembly and the triggering assembly are connected by a connecting rod.

[0012] Preferably, the meshing assembly includes an inner gear ring and an outer gear ring. The inner circumference of the inner gear ring is fixedly connected to the sleeve, and the outer circumference of the outer gear ring is fixedly connected to the inner circumference of the drift ring. The gears are meshingly connected to the adjacent sides of the inner gear ring and the outer gear ring.

[0013] Preferably, the triggering assembly includes a worm gear rotatably connected to the middle end of the outer wall of the inner ring frame and a sliding frame fixedly connected to the bottom end of the outer wall of the inner ring frame. One side of the worm gear is meshingly connected with a worm. The bottom side of the worm is fixedly connected to the middle end of the top side of the gear. The top end of the worm is rotatably connected to the outer ring frame. A ratchet is fixedly connected to the side of the worm gear away from the inner ring frame. A contact bar is slidably connected to the inside of the sliding frame through a spring. The bottom side of the contact bar penetrates through the bottom side of the sliding frame, and the bottom side of the contact bar is fixedly connected to the top side of the cleaning brush. The top side of the contact bar abuts against the bottom side of the ratchet.

[0014] Preferably, the water storage assembly includes a water pumping cylinder fixedly connected to the upper part of the outer wall of the sleeve. A water suction cavity is formed inside the water pumping cylinder. A piston ring is slidably connected to the inner wall of the water suction cavity. The bottom side of the water pumping cylinder is rotatably connected to a sealing turntable. A water inlet pipe is fixedly connected to the bottom side of the sealing turntable. The top side of the water outlet pipe is fixedly connected to the bottom side of the sealing turntable and is located at one end far from the water inlet pipe.

[0015] Preferably, the pushing and pulling assembly includes a limiting frame fixedly connected to the top side of the outer ring frame. A stretching member is slidably connected to the inner circumference of the limiting frame. The top side of the stretching member penetrates through the top side of the sealing turntable and is connected to the piston ring through a slide rail assembly. The outer wall of the water outlet pipe is fixedly connected to one side of the limiting frame.

[0016] Preferably, the slide rail assembly includes a slide rail fixedly connected to the bottom side of the piston ring. A sliding head is rotatably connected to the top side of the stretching member. A plurality of balls are arranged on the outer wall of the sliding head, and the sliding head is in rolling contact with the inner wall of the slide rail through the balls.

[0017] Preferably, one end of the connecting rod is rotatably connected to the stretching member, and the other end of the connecting rod is rotatably connected to the outer periphery of the side of the ratchet wheel away from the worm wheel.

[0018] Preferably, one-way valve diaphragms for ensuring the one-way inflow and outflow of water are arranged on the inner walls of the water outlet pipe and the water inlet pipe, and a filter screen for preventing debris from blocking is fixedly connected to the inner wall of the input end of the water inlet pipe.

[0019] Preferably, the fixed sleeve includes a housing fixedly connected to the top side of the sleeve. A plurality of abutting fixing heads are slidably connected to the inner periphery of the housing. The abutting fixing heads are driven by a cylinder installed inside the housing. A lifting ring is fixedly connected to the top side of the housing. A steel wire rope is wound around the outer wall of the lifting ring, and the end of the steel wire rope is externally connected to a hoist.

[0020] An intelligent anti-scouring method for underwater bridge piers includes the following steps:

[0021] Step 1: The flowing water impacts the flow-disturbing blades of the flow-deflecting ring, driving the flow-deflecting ring to rotate. The flowing water turbulates along the blades, destroying the flow-around vortices on both sides of the bridge pier and changing the direction and structure of the flowing water movement.

[0022] Step 2: The rotation of the flow-deflecting ring drives the outer gear ring to rotate. The outer gear ring meshes with the gear, causing the gear to displace circumferentially around the inner gear ring and rotate itself. A plurality of gears drive the structure including the outer ring frame on the top side to rotate and move synchronously with the plurality of gears.

[0023] Step 3: The rotation of the gear drives the worm on the top side to rotate. The worm engages and drives the worm wheel connected to the ratchet wheel, causing the worm wheel and the ratchet wheel to rotate synchronously.

[0024] Step 4: The rotation of the ratchet wheel drives the eccentric wheel structure of the connecting rod. At the same time, it abuts against the bottom abutting strip. The inclined surface at the top end of the abutting strip contacts the ratchet teeth of the ratchet wheel. The rotation of the ratchet wheel guides the abutting strip to press down and fall into the next ratchet tooth, driving the cleaning brush to move downward, compressing the spring in the sliding frame. The spring reset pushes the abutting strip to lift up. In this way, the cleaning brush moves up and down reciprocally, and cooperates with the displacement of the inner ring frame to clean the gear meshing area.

[0025] Step 5: Driven by the connecting rod, under the rotation of the ratchet wheel, the stretching member is reciprocally pushed and pulled, causing it to slide in the sealing turntable. The sliding head connected to the stretching member slides and contacts in the slide rail.

[0026] Step 6: The slide rail limits the sliding head so that when the piece to be stretched is pulled down or lifted, the slide rail connected to the piston ring is pulled and pushed to move in the same way. When the piston ring is lifted, the internal pressure decreases, and water flows through the water inlet pipe into the water pumping cavity.

[0027] Step 7: When the piston ring presses down, it squeezes the water in the water pumping cavity, causing the water to enter the water outlet pipe. The water flows out of the water outlet pipe nozzle under pressure, impacting the area between the internal gear ring and the external gear ring with water flow, shaking off debris in the meshing area, disturbing the water flow, and reducing the impact of the water flow on the bridge pier.

[0028] Working principle: When the pier encounters a strong impact of water flow, the water flow passes through the area of the deflection ring and contacts the spoiler blades on the surface of the deflection ring, causing the spoiler blades to be stressed and drive the deflection ring to rotate. This makes the water flow turbulent along the spoiler blades, destroying the flow vortices on both sides of the pier in this area, changing the direction of the water flow movement near the underwater pier and destroying the original water flow structure. When the deflection ring rotates, the external gear ring connected to it meshes with the gear, causing the gear to mesh with the internal gear ring. While the gear makes a circular displacement around the internal gear ring, it rotates itself. The rotating gear synchronously drives the worm on the top side to rotate. Multiple rotating gears drive the structure including the outer ring frame on the top side to rotate and move synchronously with the multiple gears. This makes the worm drive the worm gear connected to the ratchet to rotate. The rotating ratchet synchronously drives the eccentric wheel structure of the connecting rod to abut against the abutting strip at the bottom side. The inclined surface at the top of the abutting strip contacts the spiny teeth on the surface of the ratchet. The rotation of the ratchet causes the inclined surface of the spiny teeth to guide the part of the abutting strip in contact to move downward and fall into the next spiny tooth, making the abutting strip displace downward under force, driving the cleaning brush to displace downward, and compressing the spring connected to the abutting strip inside the sliding frame through the protruding structure provided on the outer wall of the abutting strip. After the inclined surface structure at the top of the abutting strip enters the next spiny tooth, the compressed spring will apply a force to the protruding structure, causing the spring to reset and push the abutting strip to lift. Repeating this process will cause the cleaning brush to displace up and down. Cooperating with the displaced inner ring frame, the structure including the sliding frame and the cleaning brush connected to the inner ring frame will displace, thereby cleaning the area where the gears need to mesh, preventing debris mixed in the water flow from jamming the meshing area. The driven connecting rod will reciprocally push and pull the tension member under the rotation of the ratchet, causing the tension member to slide in the sealing turntable. At the same time, the sliding head connected to the tension member slides in contact with the slide rail. Using the limit of the slide rail on the sliding head, when the sliding head is pulled down or lifted by the tension member, it will synchronously pull and push the slide rail connected to the piston ring to move in the same way. When the piston ring lifts, the internal pressure of the piston ring decreases, enabling the external water flow to pass through the water inlet pipe and enter the water suction chamber. When the piston ring presses down, the piston ring squeezes the water in the water suction chamber, causing it to enter the inside of the water outlet pipe. Then, the water is pressurized and sprayed out from the nozzle at the output end of the water outlet pipe, causing a water flow impact between the internal gear ring and the external gear ring, triggering an impact to further shake off the debris in the meshing area between the internal gear ring and the external gear ring, and causing the water flow in this area to be damaged, leading to a tendency for the water flow centered on this area to spread, further disturbing the water flow in this area and reducing the impact of the water flow on the pier.

[0029] The present invention provides an intelligent anti-scouring device and method for underwater piers. It has the following beneficial effects:

[0030] 1. The present invention can destroy the flow-around vortices on both sides of the bridge pier under the impact of water flow, change the direction and structure of the water flow movement, effectively reduce the scouring force of the water flow on the bridge pier, and at the same time prevent the sundries mixed in the water flow from getting stuck in the core rotating area of the device, improving the adaptability and stability of the protection device in a complex underwater environment and ensuring its long-term and effective protection of the bridge pier.

[0031] 2. The present invention converts the kinetic energy of the water flow into mechanical energy, drives the piston ring to perform pumping and drainage operations, makes the water flow spray out under pressure from the water outlet nozzle, impacts the water flow between the internal gear ring and the external gear ring, further shakes off the sundries in the meshing area, and at the same time disturbs the water flow, reducing the impact of the water flow on the bridge pier, forming an intelligent, efficient and environmentally friendly underwater bridge pier anti-scouring solution.

[0032] 3. The present invention can automatically adjust the position of the device underwater according to the change of the water flow velocity, realize the intelligent automatic adjustment of the height of the area where the device is located, ensure that the device is always in the best working position, and improve the protection effect and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a perspective view of the present invention;

[0034] Figure 2 is a schematic bottom-side structure view of the present invention;

[0035] Figure 3 is a schematic structure view of the internal gear ring and the external gear ring of the present invention;

[0036] Figure 4 is a schematic structure view of the outer ring frame of the present invention;

[0037] Figure 5 is a schematic structure view of the ratchet and the worm gear of the present invention;

[0038] Figure 6 is a schematic structure view of the abutting strip and the sliding frame of the present invention;

[0039] Figure 7 is a schematic structure view of the ratchet and the abutting strip of the present invention;

[0040] Figure 8 is a schematic connection structure view of the water pumping cylinder of the present invention;

[0041] Figure 9 is a schematic structure view of the slide rail of the present invention;

[0042] Figure 10 is a schematic structure view of the sliding head of the present invention;

[0043] Figure 11 is a schematic internal structure view of the water inlet pipe and the water outlet pipe of the present invention;

[0044] Figure 12 Structural schematic diagram of the abutting and fixing head of the present invention;

[0045] Figure 13 is Figure 3 Enlarged view of part A of

[0046] Among them, 1. Sleeve; 2. Drift ring; 3. Inner gear ring; 4. Outer gear ring; 5. Gear; 6. Inner ring frame; 7. Outer ring frame; 8. Worm; 9. Worm gear; 10. Ratchet; 11. Sliding frame; 12. Abutting strip; 13. Cleaning brush; 14. Tensile member; 15. Connecting rod; 16. Limiting frame; 17. Water pumping cylinder; 18. Sealing turntable; 19. Piston ring; 20. Slide rail; 21. Sliding head; 22. Outlet pipe; 23. Inlet pipe; 24. Housing; 25. Flow velocity sensor; 26. Abutting and fixing head; 27. Cylinder; 28. Suspension ring. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] As one aspect of the present application, an intelligent underwater pier anti-erosion device provided by an embodiment of the present invention includes:

[0049] Please refer to the attached Figure 1 , attached Figure 2 , and attached Figure 12, a sleeve 1, which is used to be sleeved on the underwater pier part and is fixed at a certain depth underwater through a fixing sleeve at the top end. The fixing sleeve includes a housing 24 fixedly connected to the top side of the sleeve 1. A plurality of abutting fixing heads 26 are slidably connected to the inner circumference of the housing 24. The abutting fixing heads 26 are driven by cylinders 27 installed inside the housing 24. The cylinders 27 are controlled by solenoid valves. A lifting ring 28 is fixedly connected to the top side of the housing 24. A steel wire rope is wound around the outer wall of the lifting ring 28. The end of the steel wire rope is externally connected to a hoist. A flow velocity sensor 25 for monitoring the underwater flow velocity is installed on the outer wall of the housing 24. The flow velocity sensor 25 selects an acoustic Doppler current profiler as the main body. Its working principle is to vertically emit acoustic wave pulses through the Doppler effect of acoustic waves, and calculate the flow velocities of different water layers by using the signals reflected by suspended particles in the water, so as to achieve static stratified measurement. It can measure the three-dimensional components and absolute directions of the flow velocities of several layers on a section at one time to collect the flow velocities of water flows at different depths. The flow velocity sensor 25, the cylinder 27 and the hoist are all controlled by the carried remote intelligent control system. The flow velocity sensor 25 detects the flow velocities of water flows at different depths in this water area. When the flow velocity at a certain depth exceeds the threshold set by the system, the system issues an alarm and sends an electrical signal to the hoist and the cylinder 27. The cylinder 27 drives the abutting fixing heads 26 to disengage from the pier surface, and the hoist winds and unwinds the steel wire rope to adjust the depth position of the device in the water area. When reaching the depth with abnormal flow velocity detected by the flow velocity sensor 25, the hoist stops winding and unwinding the steel wire rope, and the cylinder 27 pushes the abutting fixing heads 26 to re-abut and clamp the position of the pier here, so as to quickly process the high-speed water flow at this depth and realize intelligent automatic adjustment of the regional height where the device is located.

[0050] Please refer to the attached Figure 2 - attached Figure 4 , a yaw ring 2, which is rotatably connected to the bottom end of the outer wall of the sleeve 1. A plurality of spoiler vanes are fixedly connected to the outer circumference of the yaw ring 2, which are used to break the flow-around vortices on both sides of the pier underwater. When the pier encounters a water flow with strong impact force, the water flow passes through the area of the yaw ring 2 and contacts the spoiler vanes on the surface of the yaw ring 2, causing the spoiler vanes to be stressed and driving the yaw ring 2 to rotate, making the water flow turbulent along the spoiler vanes, breaking the flow-around vortices on both sides of the pier in this area, changing the direction of the water flow movement near the underwater pier and destroying the original water flow structure;

[0051] Please refer to the attached Figure 2 - attached Figure 4, the gear 5, and the number of gears 5 is multiple. The multiple gears 5 are connected to the adjacent side of the sleeve 1 and the drift ring 2 through the meshing assembly, so that when the drift ring 2 rotates, it drives the gear 5 to rotate and displace. The meshing assembly includes an internal gear ring 3 and an external gear ring 4. The inner circumference of the internal gear ring 3 is fixedly connected to the sleeve 1, and the outer circumference of the external gear ring 4 is fixedly connected to the inner circumference of the drift ring 2. The gear 5 is meshed and connected to the adjacent side of the internal gear ring 3 and the external gear ring 4. The gear 5 is connected with a cleaning brush 13 through the triggering assembly to clean the meshing transmission area of the gear 5 and prevent various sundries mixed in the water, such as branches, stones and other objects from getting stuck in this area and affecting the transmission;

[0052] Specifically, when the drift ring 2 rotates, the external gear ring 4 connected to it meshes with the gear 5, making the gear 5 mesh with the internal gear ring 3. While the gear 5 makes a circular displacement around the internal gear ring 3, it rotates itself. Please refer to the attached Figure 3 and the attached Figure 13 . At this time, the multiple gears 5 will drive the structure including the outer ring frame 7 on the top side to rotate and move synchronously with the multiple gears 5. There is a cavity for installing multiple ball bearings at the rotating connection part between the drift ring 2 and the outer ring frame 7 to ensure the stable rotation of the outer ring frame 7. The outer ring frame 7 rotates on the top side of the drift ring 2 to overcome the influence brought by the internal rotation speed deviation of the planetary gear.

[0053] Please refer to the attached Figure 5 - the attached Figure 7 . The triggering assembly includes a worm gear 9 rotatably connected to the middle end of the outer wall of the inner ring frame 6 and a sliding frame 11 fixedly connected to the bottom end of the outer wall of the inner ring frame 6. One side of the worm gear 9 is meshed and connected with a worm 8. The bottom side of the worm 8 is fixedly connected to the middle end of the top side of the gear 5. The top end of the worm 8 is rotatably connected to the outer ring frame 7. A ratchet 10 is fixedly connected to the side of the worm gear 9 away from the inner ring frame 6. An abutting strip 12 is slidably connected to the inside of the sliding frame 11 through a spring. A convex structure for compressing the spring is arranged on the outer wall of the abutting strip 12 to apply a force to the spring and enable the spring to apply a reset pushing force to it when the spring resets by abutting against the convex structure. The bottom side of the abutting strip 12 penetrates the bottom side of the sliding frame 11, and the bottom side of the abutting strip 12 is fixedly connected to the top side of the cleaning brush 13. The top side of the abutting strip 12 abuts against the bottom side of the ratchet 10;

[0054] Specifically, the rotating gear 5 synchronously drives the worm 8 on the top side to rotate, causing the worm 8 to mesh and drive the worm gear 9 connected to the ratchet 10 to rotate. The rotating ratchet 10 synchronously drives the eccentric wheel structure of the connecting rod 15 to abut against the abutting strip 12 on the bottom side. The inclined surface at the top of the abutting strip 12 contacts the spiny teeth on the surface of the ratchet 10. The rotation of the ratchet 10 causes the inclined surface of the spiny teeth to guide the part of the abutting strip 12 in contact to move downward and fall into the next spiny tooth, causing the abutting strip 12 to be forced to displace downward, driving the cleaning brush 13 to displace downward, and compressing the spring connected to the abutting strip 12 inside the sliding frame 11 through the protruding structure provided on the outer wall of the abutting strip 12. After the inclined surface structure at the top of the abutting strip 12 enters the next spiny tooth, the compressed spring will apply a force to the protruding structure, causing the spring to reset and push the abutting strip 12 to lift. Repeating this process will cause the cleaning brush 13 to displace up and down. Cooperating with the displaced inner ring frame 6, the structures including the sliding frame 11 and the cleaning brush 13 connected to the inner ring frame 6 will displace, thereby cleaning the area that the gear 5 needs to mesh through, preventing debris mixed in the water flow from jamming the meshing area.

[0055] Please refer to Appendix Figure 3 , Appendix Figure 4 and Appendix Figure 8 , the inner ring frame 6. The inner circumference of the inner ring frame 6 is rotatably connected to the middle of the outer wall of the sleeve 1. The outer circumference of the inner ring frame 6 is fixedly connected to the outer ring frame 7. The bottom side of the outer ring frame 7 is rotatably connected to the deflector ring 2. The outer circumference of the top side of the gear 5 is rotatably connected to the inner circumference of the bottom side of the outer ring frame 7. The top side of the outer ring frame 7 is supported by multiple gears 5 and drives the rotation of the outer ring frame 7. A push-pull assembly is installed on the top side of the outer ring frame 7 to drive the water storage assembly above the outer wall of the sleeve 1 to pump and drain water, causing the water outlet pipe 22 installed at the bottom side of the water storage assembly to spray water through the nozzle at the output end. The push-pull assembly and the trigger assembly are connected by the connecting rod 15. The inner ring frame 6 and the outer ring frame 7 serve as support structures and stable structures to stabilize the structures connected and in contact with them, ensuring the stability of the structural operations such as the displacement movement around the sleeve 1 and the rotational drive around the sleeve 1 after being driven by the gear 5, preventing the device from falling apart and resisting the water pressure and resistance in the water. The overall device uses a partially hollow frame structure to reduce the surface area and avoid being affected by water resistance in the water due to excessive area, making it impossible to move.

[0056] Please refer to Appendix Figure 1 , Appendix Figure 8 and Appendix Figure 11, the water storage component includes a water pumping cylinder 17 fixedly connected above the outer wall of the sleeve 1. A water suction cavity is formed inside the water pumping cylinder 17. A piston ring 19 is slidably connected to the inner wall of the water suction cavity. A sealing rotary disc 18 is rotatably connected to the bottom side of the water pumping cylinder 17. A water inlet pipe 23 is fixedly connected to the bottom side of the sealing rotary disc 18. The top side of the water outlet pipe 22 is fixedly connected to the bottom side of the sealing rotary disc 18 and is located at one end far from the water inlet pipe 23. Check valve diaphragms for ensuring the unidirectional flow of water in and out are provided on the inner walls of both the water outlet pipe 22 and the water inlet pipe 23. A filter screen for preventing debris blockage is fixedly connected to the inner wall of the input end of the water inlet pipe 23. Filling structures are provided at the gaps where the piston ring 19 contacts the water pumping cylinder 17. Sealing treatments are carried out at the rotational joints of the sealing rotary disc 18 to improve the sealing performance, so that a semi-sealed state is formed between the piston ring 19 and the sealing rotary disc 18 in the water suction cavity, maximizing the creation of a negative pressure environment for water suction and pressurized water discharge when the piston ring 19 is pulled and pushed.

[0057] Please refer to the attached Figure 8 - attached Figure 10 , the pushing and pulling component includes a limiting frame 16 fixedly connected to the top side of the outer ring frame 7. A stretching member 14 is slidably connected to the inner circumference of the limiting frame 16. The top side of the stretching member 14 penetrates through the top side of the sealing rotary disc 18 and is connected to the piston ring 19 through a slide rail assembly. The outer wall of the water outlet pipe 22 is fixedly connected to one side of the limiting frame 16, so as to rotate together with the limiting frame 16 connected to the outer ring frame 7 that rotates, enabling the nozzle at the bottom end of the water outlet pipe 22 to change positions synchronously when spraying water to create an impact in the water flow. One end of the connecting rod 15 is rotatably connected to the stretching member 14, and the other end of the connecting rod 15 is rotatably connected to the outer circumference of the side of the ratchet 10 away from the worm gear 9. The slide rail assembly includes a slide rail 20 fixedly connected to the bottom side of the piston ring 19. A sliding head 21 is rotatably connected to the top side of the stretching member 14. A plurality of balls are provided on the outer wall of the sliding head 21. The sliding head 21 is in rolling contact with the inner wall of the slide rail 20 through the balls to reduce the friction with the slide rail 20 and prevent the sliding head 21 from getting stuck when rotating due to the meshing of the gear 5.

[0058] Specifically, the driven connecting rod 15 will reciprocally push and pull the tension member 14 under the rotation of the ratchet wheel 10, causing the tension member 14 to slide within the sealing turntable 18. Meanwhile, the sliding head 21 connected to the tension member 14 makes sliding contact within the slide rail 20. By utilizing the limitation of the slide rail 20 on the sliding head 21, when the sliding head 21 is pulled down or lifted by the tension member 14, it will synchronously pull and push the slide rail 20 connected to the piston ring 19 to perform the same movement. When the piston ring 19 is lifted, the internal pressure of the piston ring 19 is reduced, enabling the external water flow to pass through the water inlet pipe 23 and enter the water pumping chamber. When the piston ring 19 is pressed down, the piston ring 19 squeezes the water in the water pumping chamber, causing it to enter the interior of the water outlet pipe 22. Subsequently, the water is pressurized and ejected from the nozzle at the output end of the water outlet pipe 22, generating a water flow impact between the internal gear ring 3 and the external gear ring 4, triggering an impact to further dislodge the debris in the meshing area of the internal gear ring 3 and the external gear ring 4, and damaging the water flow in this area. This, in turn, causes the water flow centered around this area to tend to spread, further disturbing the water flow in this area and reducing the impact of the water flow on the bridge pier.

[0059] Based on the above-provided intelligent anti-scouring device for underwater bridge piers, as another aspect of the present application, an intelligent anti-scouring method for underwater bridge piers includes the following steps:

[0060] Step 1: The flow disturbing blades of the flow impact deflector ring 2 are driven, causing the deflector ring 2 to rotate. The water flow turbulates along the blades, destroying the flow-around vortices on both sides of the bridge pier and changing the direction and structure of the water flow movement.

[0061] Step 2: The rotation of the deflector ring 2 drives the external gear ring 4 to rotate. The external gear ring 4 meshes with the gear 5, causing the gear 5 to perform a circumferential displacement around the internal gear ring 3 and rotate on its own axis. Multiple gears 5 drive the structures including the outer ring frame 7 on the top side to rotate and move synchronously with the multiple gears 5.

[0062] Step 3: The rotation of the gear 5 drives the worm 8 on the top side to rotate. The worm 8 is in meshing transmission with the worm gear 9 connected to the ratchet wheel 10, causing the worm gear 9 and the ratchet wheel 10 to rotate synchronously.

[0063] Step 4: The ratchet wheel 10 rotates to drive the eccentric wheel structure of the connecting rod 15. Meanwhile, it abuts against the bottom abutting strip 12. The top inclined surface of the abutting strip 12 contacts the ratchet teeth of the ratchet wheel 10. The rotation of the ratchet wheel 10 guides the abutting strip 12 to press down and fall into the next ratchet tooth, driving the cleaning brush 13 to move downward, compressing the spring within the sliding frame 11. The spring returns to push the abutting strip 12 to lift. In this way, the cleaning brush 13 moves up and down reciprocally, and in cooperation with the displacement of the inner ring frame 6, the meshing area of the gear 5 is cleaned.

[0064] Step 5: The driven connecting rod 15 reciprocally pushes and pulls the tension member 14 under the rotation of the ratchet wheel 10, causing it to slide within the sealing turntable 18. The sliding head 21 connected to the tension member 14 makes sliding contact within the slide rail 20.

[0065] Step Six: The slide rail 20 positions the sliding head 21. When the sliding head 21 is pulled down or lifted by the piece to be stretched 14, the slide rail 20 connected to the piston ring 19 is pulled and pushed to move in the same way. When the piston ring 19 is lifted, the internal pressure decreases, and water flows into the water suction chamber through the water inlet pipe 23.

[0066] Step Seven: When the piston ring 19 presses down, it squeezes the water in the water suction chamber, causing the water to enter the water outlet pipe 22. The water flows out of the nozzle of the water outlet pipe 22 under pressure, and water flow impact is carried out between the inner gear ring 3 and the outer gear ring 4, shaking off the sundries in the meshing area, disturbing the water flow, and reducing the impact of the water flow on the bridge pier.

[0067] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent anti-scour device for underwater bridge piers, characterized in that: include: The sleeve (1) is used to be sleeved on the underwater bridge pier part and fixed at a certain depth underwater through a fixing sleeve at the top; A deflector ring (2), the deflector ring (2) being rotatably connected to the bottom end of the outer wall of the sleeve (1), and a plurality of spoiler blades being fixedly connected to the outer periphery of the deflector ring (2) for destroying flow vortices on both sides of the bridge pier underwater; A gear (5), wherein the number of the gears (5) is plural, and the plural gears (5) are connected to the sleeve (1) and the side close to the deflection ring (2) through a meshing assembly, so that when the deflection ring (2) rotates, the gears (5) are driven to rotate and move, and the gears (5) are connected to a cleaning brush (13) through a trigger assembly to clean the meshing transmission area of ​​the gears (5); An inner ring frame (6), the inner periphery of the inner ring frame (6) is rotatably connected to the middle end of the outer wall of the sleeve (1), the outer periphery of the inner ring frame (6) is fixedly connected to the outer ring frame (7), the bottom side of the outer ring frame (7) is rotatably connected to the deflection ring (2), the top side outer periphery of the gear (5) is rotatably connected to the bottom side inner periphery of the outer ring frame (7), the top side of the outer ring frame (7) is installed with a push-pull assembly to pull the water storage assembly above the outer wall of the sleeve (1) to perform water pumping and drainage, so that the water outlet pipe (22) installed on the bottom side of the water storage assembly sprays water through the nozzle at the output end, and the push-pull assembly is connected to the trigger assembly through a connecting rod (15).

2. The intelligent anti-scouring device for underwater bridge piers according to claim 1 is characterized in that: The meshing assembly comprises an inner gear ring (3) and an outer gear ring (4); the inner periphery of the inner gear ring (3) is fixedly connected to the sleeve (1); the outer periphery of the outer gear ring (4) is fixedly connected to the inner periphery of the deflection ring (2); and the gear (5) is meshingly connected to the adjacent sides of the inner gear ring (3) and the outer gear ring (4).

3. The intelligent anti-scouring device for underwater bridge piers according to claim 1 is characterized in that: The trigger assembly comprises a worm wheel (9) rotatably connected to the middle end of the outer wall of the inner ring frame (6) and a sliding frame (11) fixedly connected to the bottom end of the outer wall of the inner ring frame (6); one side of the worm wheel (9) is meshingly connected with a worm (8); the bottom side of the worm (8) is fixedly connected to the middle end of the top side of the gear (5); the top end of the worm (8) is rotatably connected to the outer ring frame (7); the side of the worm wheel (9) away from the inner ring frame (6) is fixedly connected with a ratchet (10); the inside of the sliding frame (11) is slidably connected with an abutment strip (12) through a spring; the bottom side of the abutment strip (12) passes through the bottom side of the sliding frame (11), and the bottom side of the abutment strip (12) is fixedly connected to the top side of a cleaning brush (13); the top side of the abutment strip (12) abuts against the bottom side of the ratchet (10).

4. The intelligent anti-scouring device for underwater bridge piers according to claim 1 is characterized in that: The water storage assembly comprises a water pump (17) fixedly connected to the upper part of the outer wall of the sleeve (1); a water drawing chamber is provided inside the water pump (17); a piston ring (19) is slidably connected to the inner wall of the water drawing chamber; a sealing turntable (18) is rotatably connected to the bottom side of the water pump (17); a water inlet pipe (23) is fixedly connected to the bottom side of the sealing turntable (18); and the top side of the water outlet pipe (22) is fixedly connected to the bottom side of the sealing turntable (18) and is located at an end away from the water inlet pipe (23).

5. The intelligent anti-scouring device for underwater bridge piers according to claim 4 is characterized in that: The push-pull assembly comprises a limit frame (16) fixedly connected to the top side of the outer ring frame (7); a tensile member (14) is slidably connected to the inner periphery of the limit frame (16); the top side of the tensile member (14) penetrates the top side of the sealing rotary disk (18) and is connected to the piston ring (19) via a slide rail assembly; and the outer wall of the water outlet pipe (22) is fixedly connected to one side of the limit frame (16).

6. The intelligent anti-scouring device for underwater bridge piers according to claim 5 is characterized in that: The slide rail assembly comprises a slide rail (20) fixedly connected to the bottom side of the piston ring (19); the top side of the stretching member (14) is rotatably connected to a sliding head (21); a plurality of balls are arranged on the outer wall of the sliding head (21); and the sliding head (21) is in rolling contact with the inner wall of the slide rail (20) via the balls.

7. An underwater bridge pier intelligent anti-scour device according to any one of claims 5 or 3, characterized in that: One end of the connecting rod (15) is rotationally connected to the stretching member (14), and the other end of the connecting rod (15) is rotationally connected to the outer periphery of the ratchet wheel (10) away from the worm wheel (9).

8. The intelligent anti-scouring device for underwater bridge piers according to claim 4 is characterized in that: The inner walls of the water outlet pipe (22) and the water inlet pipe (23) are both provided with one-way valve diaphragms to ensure one-way inflow and outflow of water, and the inner wall of the input end of the water inlet pipe (23) is fixedly connected with a filter screen for preventing clogging by debris.

9. The intelligent anti-scouring device for underwater bridge piers according to claim 1, characterized in that: The fixing sleeve comprises a shell (24) fixedly connected to the top side of the sleeve (1); a plurality of abutting fixing heads (26) are slidably connected to the inner periphery of the shell (24); the abutting fixing heads (26) are driven by a cylinder (27) installed inside the shell (24); a lifting ring (28) is fixedly connected to the top side of the shell (24); a steel wire rope is wound around the outer wall of the lifting ring (28); and a hoist is externally connected to the end of the steel wire rope.

10. An underwater bridge pier intelligent anti-scouring method, using an underwater bridge pier intelligent anti-scouring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The water flow impacts the spoiler blades of the deflection ring (2), driving the deflection ring (2) to rotate, and the water flow turbulently moves along the blades, destroying the vortexes around the two sides of the bridge pier, and changing the direction and structure of the water flow; Step 2: The deflector ring (2) rotates to drive the outer gear ring (4) to rotate, and the outer gear ring (4) meshes with the gear (5), so that the gear (5) moves around the circumference of the inner gear ring (3) and rotates on its own. The multiple gears (5) drive the top side structure including the outer ring frame (7) to rotate, and follow the multiple gears (5) to move synchronously; Step 3: The gear (5) rotates to drive the top worm (8) to rotate, and the worm (8) meshes with the worm wheel (9) connected to the ratchet (10), so that the worm wheel (9) and the ratchet (10) rotate synchronously; Step 4: The ratchet wheel (10) rotates to transmit the eccentric wheel structure of the connecting rod (15), and at the same time, it abuts against the bottom side abutment bar (12), and the top inclined surface of the abutment bar (12) contacts the ratchet teeth of the ratchet wheel (10). The ratchet wheel (10) rotates to guide the abutment bar (12) to press down and fall into the next ratchet tooth, driving the cleaning brush (13) to move downward, compressing the spring in the sliding frame (11), and the spring reset pushes the abutment bar (12) to lift up, so that the cleaning brush (13) moves up and down in this reciprocating manner, and cooperates with the displacement of the inner ring frame (6) to clean the meshing area of ​​the gear (5); Step 5: The driven connecting rod (15) pushes and pulls the stretching member (14) back and forth under the rotation of the ratchet wheel (10), so that the stretching member (14) slides in the sealing rotary disk (18), and the sliding head (21) connected to the stretching member (14) slides in contact with the slide rail (20); Step 6: The slide rail (20) limits the sliding head (21) so that when the stretched member (14) is pulled down or lifted up, the slide rail (20) connected to the piston ring (19) is pulled and pushed to make the same movement. When the piston ring (19) is lifted up, the internal pressure is reduced, and water flows into the water-drawing chamber through the water inlet pipe (23); Step 7: When the piston ring (19) is pressed downward, the water in the water-drawing cavity is squeezed to enter the water outlet pipe (22). The water is sprayed out from the nozzle of the water outlet pipe (22) under pressure, and the water flow impacts the space between the inner gear ring (3) and the outer gear ring (4), thereby shaking off the debris in the meshing area, disrupting the water flow, and reducing the impact of the water flow impact on the bridge pier.

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